阅读说明：本技术 工程机械 (Construction machine ) 是由 横田淳平 稻冈智子 于 2020-03-03 设计创作，主要内容包括：在工程机械(1),通电指示检测部(63)检测为了开始向电子设备通电的通电指示,该电子设备是在启动发动机(2)之前需要进行动作确认的电子设备。计时部(65)对从开始向电子设备通电起的经过时间进行计时。电池控制部62响应检测到所述通电指示进行开始向电子设备通电的控制。发动机控制部61,在所述经过时间超过预先设定的第一基准时间(T1)之前、启动操作受理部(3)受理了启动操作的情况下,进行使发动机(2)启动的控制。控制装置(6),在开始向电子设备通电之后开且发动机(2)被启动之前、在满足了预先设定的至少一个电力消耗抑制条件的情况下,进行用于抑制电池(4)的电力消耗的控制。(In a construction machine (1), an energization instruction detection unit (63) detects an energization instruction for starting energization of an electronic device that requires operation confirmation before an engine (2) is started. A timer unit (65) counts the time elapsed since the start of energization of the electronic device. The battery control unit 62 performs control for starting power supply to the electronic apparatus in response to detection of the power supply instruction. The engine control unit (61) performs control to start the engine (2) when the start operation is received by the start operation receiving unit (3) before the elapsed time exceeds a preset first reference time (T1). The control device (6) performs control for suppressing the power consumption of the battery (4) when at least one preset power consumption suppression condition is satisfied after the start of energization of the electronic device and before the engine (2) is started.)

1. A working machine, characterized by comprising:

an engine;

a start operation reception unit that receives a start operation for starting the engine;

a battery for supplying power; and the number of the first and second groups,

a control device, wherein,

the control device is provided with:

an engine control unit that controls the engine;

a battery control unit that controls supply power of the battery;

a power-on instruction detection unit that detects a power-on instruction to start power-on to an electronic device that requires operation confirmation before starting the engine in order to supply power of the battery to the electronic device; and the number of the first and second groups,

a timer unit that counts an elapsed time from a start of energization to the electronic device, wherein,

the battery control section that performs control of starting energization of the electronic apparatus by supplying power of the battery to the electronic apparatus in response to the energization instruction detected by the energization instruction detection section;

the engine control unit configured to perform control to start the engine when the starting operation is received by the starting operation receiving unit before the elapsed time exceeds a first reference time set in advance;

the control device performs control for suppressing power consumption of the battery when at least one preset power consumption suppression condition is satisfied after power supply to the electronic device is started and before the engine is started.

2. The work machine of claim 1,

the at least one power consumption suppressing condition includes a first power consumption suppressing condition in which the elapsed time exceeds the first reference time without the startup operation being accepted by the startup operation accepting unit after the start of the power supply to the electronic apparatus,

the battery control unit performs control to stop power supply to the electronic device when the first power consumption suppression condition is satisfied.

3. The work machine of claim 1,

the control device further comprises a notification control unit, wherein,

the at least one power consumption suppressing condition includes a first power consumption suppressing condition in which the elapsed time exceeds the first reference time without the startup operation being accepted by the startup operation accepting unit after the start of the power supply to the electronic apparatus,

the notification control unit performs, when the first power consumption suppression condition is satisfied, a notification as predetermined control for stopping power supply to the electronic device.

4. A working machine according to claim 3,

the at least one power consumption suppressing condition further includes a second power consumption suppressing condition that a preset continuing operation for continuing the energization to the electronic device has not been performed yet and a preset second reference time has elapsed since the notification by the notification control section,

the battery control unit performs control to stop the power supply to the electronic device when the second power consumption suppressing condition is satisfied.

5. A working machine according to claim 4,

the at least one power consumption suppressing condition further includes a third power consumption suppressing condition that the start operation is not accepted by the start operation accepting unit from the time when the continuing operation is performed until a preset third reference time elapses after the continuing operation is performed from the notification,

the notification control unit performs, when the third power consumption suppression condition is satisfied, a predetermined control of notifying again as stopping the power supply to the electronic device.

6. A working machine according to any of claims 1-5,

the control device further includes:

a door opening detection unit that detects an opening operation of a door that opens a cab of the construction machine,

the at least one power consumption suppressing condition includes a fourth power consumption suppressing condition that the elapsed time exceeds a preset fourth reference time after the start of the energization of the electronic apparatus by the door opening detection section having not detected the opening operation,

the battery control unit performs control to stop the power supply to the electronic device when the fourth power consumption suppressing condition is satisfied.

7. A working machine according to any of claims 1-6,

the energization instruction is an instruction based on an operation performed by a work-related person of the construction machine outside a cab of the construction machine before the engine is started.

8. The work machine of claim 1,

the power-on instruction detection unit detects an unlocking operation for unlocking a door of a cab of the construction machine,

the power-on indication is the unlocking operation.

9. The work machine of claim 1,

the power-on instruction detection unit detects an opening operation for opening a door of a cab of the construction machine,

the power-on indication is the open operation.

10. The work machine of claim 1,

the power-on indication detecting part detects that the electronic key exists in a preset reference range,

the power-on indication is that the electronic key is present in the reference range.

11. The work machine of claim 1,

the power-on instruction detecting unit detects that the electronic key is operated within a preset reference range,

the power-on indication is that the electronic key is operated in the reference range.

12. A working machine according to claim 10 or 11,

the at least one power consumption suppressing condition includes a fifth power consumption suppressing condition that the electronic key is not detected in the reference range after the start of the power-on to the electronic apparatus,

the battery control unit performs control to stop the power supply to the electronic device when the fifth power consumption suppression condition is satisfied.

13. The work machine of claim 1,

the energization instruction detecting unit detects that an electronic key is present in a first reference range set in advance and that the electronic key is present in a second reference range set in advance closer to the construction machine than the first reference range,

the energization instruction is that the electronic key is present in the second reference range until a preset fifth reference time elapses after the electronic key is detected in the first reference range.

14. A working machine according to any of claims 1-13, characterized by further comprising:

a lock mechanism switchable between a locked state and an unlocked state, wherein,

the engine control unit executes control to start the engine when the start operation is received by the start operation receiving unit and the lock mechanism is in the locked state before the elapsed time exceeds a first reference time.

15. A working machine, characterized by comprising:

an engine;

a battery for supplying power; and the number of the first and second groups,

a control device, wherein,

the control device is provided with:

an engine control unit that controls the engine;

a battery control unit that controls supply power of the battery; and the number of the first and second groups,

an energization instruction detecting unit that detects an energization instruction to start energization of an electronic device that requires operation confirmation before starting the engine in order to supply power of the battery to the electronic device,

the battery control section that performs control of starting energization of the electronic apparatus by supplying power of the battery to the electronic apparatus in response to the energization instruction detected by the energization instruction detection section;

the engine control unit performs control to start the engine in response to completion of the operation check after the electronic device is powered on.

Technical Field

The present invention relates to an engineering machine.

Background

In construction machines, a push-start switch is used as an operation means for starting an engine (see, for example, patent document 1). In the press-start type construction machine, in order to check whether or not the application program for electronic control and the electronic device are operating normally, the operation of the electronic device is checked before starting the engine. Specifically, in a push-start type construction machine, for example, after an operator enters a cab, a power-on operation (for example, an operation of pushing a rotating lever around a start button, an operation of starting energization of devices, or the like) is performed to supply electric power from a battery to the electronic device, and energization of the electronic device is started to confirm the operation of the electronic device. After the operation confirmation is performed, the operator starts the engine by a pressing operation (start operation) of pressing a start button.

However, in an actual work site, after the operator starts the energization of the electronic device by performing the on operation, there is a case where another work is performed without performing the start operation. In this case, since the power supply to the electronic device is continued even during the other work, the power of the battery is wasted and the remaining amount of the battery is reduced.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2016-113772

Disclosure of Invention

The invention aims to provide a construction machine which can restrain the reduction of the residual quantity of a battery after the start of electrifying an electronic device.

The provided construction machine includes: an engine; a start operation reception unit that receives a start operation for starting the engine; a battery for supplying power; and a control device, wherein the control device includes: an engine control unit that controls the engine; a battery control unit that controls supply power of the battery; a power-on instruction detection unit that detects a power-on instruction to start power-on to an electronic device that requires operation confirmation before starting the engine in order to supply power of the battery to the electronic device; and a timer unit that counts an elapsed time from a start of energization to the electronic apparatus, wherein the battery control unit performs control to start energization to the electronic apparatus by supplying power of the battery to the electronic apparatus in response to the energization instruction detected by the energization instruction detection unit; the engine control unit configured to perform control to start the engine when the start operation is accepted by the start operation accepting unit before the elapsed time exceeds a first reference time set in advance; the control device performs control for suppressing power consumption of the battery when at least one preset power consumption suppression condition is satisfied after power supply to the electronic device is started and before the engine is started.

Another provided work machine includes: an engine; a battery for supplying power; and a control device, wherein the control device includes: an engine control unit that controls the engine; a battery control unit that controls supply power of the battery; and a power-on instruction detecting unit that detects a power-on instruction to start power-on to an electronic device that requires operation confirmation before starting the engine, in order to supply power of the battery to the electronic device, wherein the battery control unit performs control to start power-on to the electronic device by supplying power of the battery to the electronic device in response to the power-on instruction detected by the power-on instruction detecting unit; the engine control unit performs control to start the engine in response to completion of the operation check after the electronic device is powered on.

Drawings

Fig. 1 is a block diagram showing a configuration of a controller of a hydraulic excavator according to a first embodiment.

Fig. 2 is a flowchart showing a process performed by the controller according to the first embodiment.

Fig. 3 is a flowchart showing a process performed by the controller according to the second embodiment.

Fig. 4 is a flowchart showing a process performed by the controller according to the third embodiment.

Fig. 5 is a flowchart showing a process performed by the controller according to the fourth embodiment.

Fig. 6 is a block diagram showing a configuration of a controller according to a fifth embodiment.

Fig. 7 is a flowchart showing a process performed by the controller according to the fifth embodiment.

Fig. 8 is a conceptual diagram illustrating the first reference range and the second reference range according to the sixth embodiment.

Fig. 9 is a flowchart showing a process performed by the controller according to the sixth embodiment.

Fig. 10 is a flowchart showing a process performed by the controller according to the seventh embodiment.

Fig. 11 is a flowchart showing a process performed by the controller according to the modification.

Detailed Description

First embodiment

A hydraulic excavator 1 according to a first embodiment of the present invention will be described with reference to fig. 1 and 2. A hydraulic excavator 1 shown in the block diagram of fig. 1 is an example of a construction machine. However, the construction machine is not limited to the hydraulic excavator 1, and may be another construction machine such as a crane or a bulldozer.

The hydraulic excavator 1 includes an engine 2, a push start key 3, a battery 4, an operation panel 5, and a controller 6.

The pressing of the start key 3 is an operation key for receiving a start operation performed by a worker related to the operation to start the engine 2, and is an example of a start operation receiving unit. When the start key 3 is pressed and a start operation by the worker is accepted, a signal indicating that the start operation is accepted is output to the controller 6 (specifically, a main control unit of the controller 6 described later). The work related person includes any person related to the work of hydraulic excavator 1, such as an operator who operates hydraulic excavator 1, a work manager who manages the work of hydraulic excavator 1, a work assistant for the work, and a worker who performs maintenance of hydraulic excavator 1. The above-described start operation is mainly an operation performed by an operator, but includes an operation performed by an operator who performs maintenance during maintenance of the hydraulic excavator 1, for example.

The battery 4 is a power source that supplies power to an electronic device group containing one or more electronic devices and can power on each electronic device of the electronic device group. The battery 4 is constituted by a secondary battery.

Each electronic device of the electronic device group is a device that requires action confirmation before starting the engine 2. Examples of such electronic devices include an mechatronic controller, an ECU (engine control unit), and a monitor, but the electronic devices are not limited thereto. The monitor includes, for example, an operation panel 5 shown in fig. 1.

In the operation check, for example, a check is performed to check whether the electronic device is operating normally, and a check is performed to check whether an application program used for electronic control of the electronic device is operating normally. At least one of the controller 6 shown in fig. 1 and the other controllers executes processing for action confirmation set in advance for each electronic device of the electronic device group. In the case where the other controller executes the process of motion confirmation, if the process of motion confirmation of the electronic device is completed, a signal indicating that the process of motion confirmation is completed is input from the electronic device or the other controller to the controller 6.

The operation panel 5 is a touch panel capable of displaying various information and accepting an operation (touch operation) performed by an operator. The operation panel 5 is not limited to the touch panel, and may be a display panel other than the touch panel. The operation panel 5 is provided in the cab 11 (see fig. 8).

As shown in fig. 8, the hydraulic excavator 1 includes an operator's cab 11, and the operator's cab 11 includes a door 12 that can open and close an entrance of the operator's cab 11 and a door lock 13 that can lock the door 12. Fig. 8 is a schematic diagram for explaining a sixth embodiment to be described later, but the cab 11, the door 12, and the door lock 13 are provided not only in the hydraulic excavator 1 according to the sixth embodiment but also in the hydraulic excavator 1 according to another embodiment including the first embodiment.

The controller 6 is a device that controls various operations of the hydraulic excavator 1, and is an example of a control device. The controller 6 includes a main control unit, a plurality of detection units, and a timer unit 65.

The main control unit includes a CPU (Central Processing Unit), a ROM (read Only memory), a RAM (random Access memory), and the like. The main control unit includes an engine control unit 61, a battery control unit 62, a lock control unit 66, and a notification control unit 67. The main control unit realizes the respective functions of the engine control unit 61, the battery control unit 62, the lock control unit 66, and the notification control unit 67 by causing the CPU to execute control programs.

The plurality of detectors include an unlock detector 63 and a door open/close detector 64.

The engine control unit 61 is a processing unit that controls the driving state of the engine 2. The engine control unit 61 may perform control for starting the engine 2 in the stopped state and stopping the engine 2 in the driven state.

The control of the engine control unit 61 to start the engine 2 may be, for example, as follows. That is, the hydraulic excavator 1 further includes, for example, a starter (starter) and a first power supply switching unit. The starter is a motor that starts the engine 2. The first power supply switching unit is a circuit element that is switchable between an allowing state in which power supply from the battery 4 to the starter is allowed and a preventing state in which power supply from the battery 4 to the starter is prevented. The engine control unit 61 is configured to drive the starter to start the engine 2 by outputting a command signal for causing the first power supply switching unit to switch from the blocking state to the permitting state so as to supply power from the battery 4 to the starter. However, the control of the engine control unit 61 to start the engine 2 is not limited to the above control.

The battery control unit 62 is a processing unit that controls power supply to the battery 4. The battery control unit 62 can perform control of energizing each electronic device of the electronic device group by supplying the electric power of the battery 4 to each electronic device of the electronic device group.

The control performed by the battery control unit 62 to supply the electric power of the battery 4 to the electronic device may be, for example, as follows. That is, the hydraulic excavator 1 further includes, for example, a second power supply switching unit that is a circuit element that is switchable between an allowing state in which power supply from the battery 4 to each electronic device of the electronic device group is allowed and a blocking state in which power supply from the battery 4 to the electronic device group is blocked. The battery control section 62 can supply the electric power of the battery 4 to each electronic device of the electronic device group by outputting an instruction signal that causes the second power supply switching section to switch to the permission state to supply the electric power from the battery 4 to each electronic device of the electronic device group, and starts the energization to each electronic device of the electronic device group. On the other hand, the battery control unit 62 can stop the power supply to the electronic device group by outputting the command signal for switching the second power supply switching unit to the blocking state.

The unlock detection unit 63 is a detection unit for detecting an unlocking operation for unlocking the door 12 of the cab 11. The unlock detection unit 63 is an example of an energization instruction detection unit. The door lock 13 is switchable between a locked state and an unlocked state. The above-described unlocking operation is an operation for switching the door lock 13 from the locked state to the unlocked state.

The unlock detection unit 63 is configured by, for example, a sensor that can detect that the unlocking operation of the door 12 is performed (the unlocking operation of the door lock 13 is performed). Specifically, the unlock detection unit 63 is configured by, for example, a sensor capable of detecting the rotation angle of the key cylinder of the door lock 13. The unlock detection unit 63 may be configured by, for example, a sensor capable of detecting the approach or contact of the electronic key to the door lock 13, the electronic key switching the door lock 13 between the locked state and the unlocked state. In this case, the unlock detection unit 63 includes a receiving device capable of receiving the radio wave transmitted from the electronic key. The unlock detection unit 63 may be configured by a receiving device capable of receiving a radio wave transmitted from the electronic key and a detection device including a contact sensor that detects contact of the operator. In this case, the receiving device may detect that an electronic key (e.g., an electronic key held by an operator) is present in the vicinity of the hydraulic excavator 1, and the contact sensor may detect that the operator has contacted the door 12 of the cab 11, for example. However, the unlock detection unit 63 is not limited to these specific examples.

The above-described unlocking operation is one example of the power-on indication. The power-on instruction is an instruction set in advance for causing the battery control unit 62 to perform control for supplying the electric power of the battery 4 to the electronic device and for powering on the electronic device. In the first embodiment, the energization instruction is set to the unlocking operation, but the present invention is not limited thereto. The above-described energization instruction may be configured by an operation of the hydraulic excavator 1 or a device related thereto by a work related person such as an operator, or may be configured by an operation of the work related person at a work site.

The unlock detection unit 63, when detecting that the unlocking operation of the door 12 is performed (the unlocking operation of the door lock 13), inputs a signal indicating that the unlocking operation is performed to the main control unit of the controller 6.

The door opening/closing detector 64 is a detector for detecting an opening/closing operation of the door 12 of the cab 11. The door opening/closing detector 64 is an example of a door opening detector. That is, the door opening/closing detection portion 64 detects an opening operation to open the door 12 (the door 12 is opened), and detects a closing operation to close the door 12 (the door 12 is closed).

The door opening/closing detector 64 is composed of sensors capable of detecting the opening operation and the closing operation. Specifically, the door opening/closing detection unit 64 is configured by, for example, a sensor provided in at least one of the door 12 and the door frame, and is not limited to this, and the sensor is capable of detecting that the end of the door 12 approaches or contacts the door frame by the closing operation and detecting that the end of the door 12 is separated from the door frame by the opening operation.

The door opening/closing detector 64 inputs a signal indicating that the opening operation is performed to the main controller of the controller 6 when detecting that the opening operation is performed.

The timer unit 65 has a function of counting time, and counts time from the start of energization of the electronic device group by the battery control unit 62 as elapsed time.

The lock control unit 66 is a processing unit that controls the operation of the door lock 13 of the cab 11. The lock control unit 66 performs control of locking the door 12 to switch the door lock 13 from the unlocked state to the locked state and control of unlocking the door 12 to switch the door lock 13 from the locked state to the unlocked state. That is, the lock control portion 66 can automatically lock or unlock the door 12 of the cab 11.

The notification control unit 67 is a processing unit that performs predetermined control for notifying that the power supply to the electronic device group through the battery 4 is stopped. In the first embodiment, the notification control unit 67 outputs a signal corresponding to a message to stop the energization of the electronic device group by the battery 4 to the operation panel 5 so as to be displayed on the operation panel 5.

Next, a process (energization control process) performed by the controller 6 according to the first embodiment will be described with reference to a flowchart of fig. 2.

In fig. 2, the processing of steps S13 and S14 determines whether or not a preset first power consumption suppressing condition is satisfied. When the first power consumption suppressing condition is satisfied (yes at step S13) after the start of the energization of the electronic device and before the engine 2 is started, the battery control unit 62 performs power consumption suppressing control for suppressing the power consumption of the battery 4 (step S16). The details are as follows.

As shown in fig. 2, at step S11, the main control unit of controller 6 determines whether or not the unlocking operation of unlocking door 12 of cab 11 (the unlocking operation of door lock 13) is detected by unlocking detection unit 63. The unlocking detection unit 63 is configured to detect, as an unlocking operation, a contact of an operator having an electronic key with a contact sensor provided in the door 12. In the first embodiment shown in fig. 2, the above-described energization instruction is an unlocking operation detected by the unlocking detection unit 63.

When the unlocking operation (the energization instruction) is detected by the unlocking detection unit 63 (yes at S11), the unlocking detection unit 63 inputs a signal indicating that the unlocking operation is detected to the main control unit of the controller 6. Next, at step S12, the battery control section 62 of the controller 6 performs control to start energization to each electronic device of the electronic device group by supplying power of the battery 4 to each electronic device of the electronic device group.

In step S13, the main control unit of the controller 6 determines whether or not the elapsed time (the time since the start of energization to the electronic equipment group) counted by the timer unit 65 has elapsed the reference time T1. The reference time T1 is one example of a first reference time. The reference time T1 is a preset time threshold, and may be set to any value by the worker. The reference time T1 can be set, for example, by taking into account data such as the average time required from the time when the energization instruction is given until the operator performs the start operation to start the engine 2, the time required from the time when the energization instruction is given until the operation check for each electronic device of the electronic device group is completed, and the method of setting the reference time T1 is not limited thereto.

If it is determined that the reference time T1 has not elapsed since the energization was started (no at S13), the main control section of the controller 6 performs the process of step S14. On the other hand, if it is determined that the elapsed time has elapsed after the reference time T1 (yes at S13), the main control unit of the controller 6 performs the process of step S16.

In step S14, the main control unit of the controller 6 determines whether or not the start key 3 has been pressed to accept a start operation for starting the engine 2. When the start key 3 is pressed and the start operation by the operator is accepted, a signal indicating that the start operation is accepted is input to the main control section of the controller 6.

If it is determined that the starting operation for starting the engine 2 is accepted (yes at S14), the main control unit of the controller 6 performs the process of step S15. On the other hand, if it is determined that the starting operation for starting the engine 2 has not been accepted (no at S14), the main control unit of the controller 6 performs the process of step S13.

In step S15, the engine controller 61 of the controller 6 performs control for starting the engine 2.

On the other hand, if it is determined that the elapsed time has elapsed after the reference time T1 (yes at S13), at step S16, the battery control portion 62 of the controller 6 performs control of stopping the supply of electric power from the battery 4 and stopping the energization to the electronic equipment group.

If the power supply to the electronic equipment group is stopped, in step S17, the lock control unit 66 of the controller 6 controls the operation of the door lock 13 so that the door 12 is locked. Thus, the door 12 is automatically locked even if the operator does not switch the door lock 13 to the locked state.

In the first embodiment described above, if an unlocking operation (power-on instruction) is detected (yes at S11 in fig. 2), power of the battery 4 is supplied to the electronic device group, and power-on to the electronic device group is started (S12). If the starting operation is accepted (yes at S14) before the elapsed time from the start of energization exceeds the reference time T1 (no at S13), the engine 2 is started (S15). Therefore, the energization is started (the hydraulic excavator 1 is in the on state) before the start key 3 is pressed to receive the start operation for starting the engine 2. This makes it possible to use the time until the operator sits in the cab 11 as the power supply time to the electronic equipment group. Therefore, in hydraulic excavator 1, the waiting time from when the operator sits in the cab until engine 2 is started can be shortened, and as a result, the waiting trouble of the operator can be reduced.

In the first embodiment, if the elapsed time from the start of energization exceeds the reference time T1 (yes at S13), energization of the electronic device group by the battery 4 is stopped (S16). That is, when the operator does not have the intention to start the engine 2, and when there is a possibility that the duration of the energization of the electronic equipment may become long while the operator is not performing the start operation to start the engine 2, the energization of the electronic equipment group is stopped based on the elapsed time and the reference time T1, and the operator can perform another operation or the like before starting the engine 2. This makes it possible to suppress power consumption of the battery 4 and to suppress a reduction in the remaining amount of the battery.

In the first embodiment, a specific operation by a worker or other operation-related person, such as an unlocking operation of the unlock door 12, is set as the energization instruction, and thus, the energization of the electronic equipment group can be started when the possibility of starting the engine 2 is relatively high.

In the first embodiment, after the elapsed time from the start of energization exceeds the reference time T1 (yes at S13), energization of the electronic equipment group by the battery 4 is stopped (S16), and the control door 12 that locks the door 12 by the door lock 13 of the cab 11 is automatically locked (S17). For this reason, theft can be prevented.

Second embodiment

Next, a second embodiment will be described with reference to the flowchart of fig. 3. The second embodiment is a modification of the first embodiment described above. The process performed by the controller 6 according to the second embodiment differs from the process performed by the controller 6 according to the first embodiment in that steps S21 to S24 shown in fig. 3 are further included. Hereinafter, the configuration according to the second embodiment will be described mainly focusing on the differences from the first embodiment.

In fig. 3, the processing of steps S13 and S14 determines whether a preset first power consumption suppressing condition is satisfied, the processing of step S22 determines whether a preset second power consumption suppressing condition is satisfied, and the processing of steps S23 and S24 determines whether a preset third power consumption suppressing condition is satisfied. When the first power consumption suppressing condition is satisfied (yes at step S13), the notification controller 67 performs predetermined control for notifying that the power supply to the electronic device is stopped (step S21). When the second power consumption suppressing condition is satisfied (no at step S22), battery control unit 62 performs control to stop power supply to the electronic device (step S16). When the third power consumption suppressing condition is satisfied (yes at step S23), the notification controller 67 performs predetermined control for notifying again that the power supply to the electronic device is stopped (step S21). The details are as follows.

As shown in fig. 3, when the elapsed time from the start of energization has elapsed after the reference time T1 (yes in step S13), the main controller of the controller 6 according to the second embodiment executes a predetermined notification process of notifying the operator of the stop of energization of the electronic device group, in other words, the stop of energization of the electronic device group, instead of immediately stopping energization of the electronic device group as in the first embodiment (steps S21 to S24).

Specifically, in step S21, the notification control unit 67 of the controller 6 outputs a signal corresponding to a predetermined message (for example, "power supply is stopped") indicating that the power supply to the electronic device group through the battery 4 is stopped, to the operation panel 5 so as to be displayed on the operation panel 5.

The notification control unit 67 according to the second embodiment notifies the stop of the energization by a message displayed on the operation panel 5, but is not limited thereto. For example, the notification control unit 67 may notify the stop of the energization by an alarm sound or sound data recorded in advance. Alternatively, the notification control unit 67 may notify the stop of the energization by turning on (blinking) of an illumination device such as a lamp. In addition, the notification control unit 67 may notify that the energization is stopped by the brightness (for example, "dimming") of the illumination when the vehicle is of a type in which the illumination of the cab is turned on at the same time as the energization is started. By adopting these notification methods, the operator can be notified of the stop of energization even if the line of sight of the operator is away from the operation panel 5.

In step S22, the main control unit of the controller 6 determines whether or not a continuation operation, which is an operation for continuing the energization, has been performed before the reference time T2 elapses from the time when the notification control unit 67 has notified. The continuation operation is an operation performed when the operator wants to maintain the power-on state, which is a state in which the operator supplies power to the electronic device group, and is an operation set in advance to reflect the intention of the operator. Specifically, the continuation operation may be, for example, a reply operation that is an operation of replying to the inquiry message displayed simultaneously with the above-described power-on stop message. As an inquiry message, for example, "do power on state to be maintained? The "content as described above may be an operation of causing the operator to select an option displayed on the operation panel 5 (for example," yes "/" no ") as an operation of replying to the query message. The continuation operation may be, for example, an operation of an operation lever or a switch provided in the cab. However, the continuation operation is not limited to these specific examples. Also, the reference time T2 is an example of the second reference time. The reference time T2 is a preset time threshold and can be set to any value by the operator.

In step S22, if it is determined that the above-described continuation operation was performed before the elapse of the reference time T2 (yes in step S22), the main control section of the controller 6 performs the process of step S23. On the other hand, if the reference time T2 has elapsed without the above-described continuation operation (no in step S22), the main control section of the controller 6 performs the process of step S16.

In steps S23 and S24, the main control unit of the controller 6 determines whether or not the start key 3 has been pressed before the reference time T3 elapses from the time when the above-described continuation operation has been performed, and a start operation to start the engine 2 has been accepted. The reference time T3 is an example of the third reference time. The reference time T3 is a preset time threshold and can be set to any value by the operator.

If it is determined that the start operation is accepted before the reference time T3 elapses ("no" at step S23 and "yes" at S24), the main control unit of the controller 6 performs the process of step S15. On the other hand, if the reference time T3 has elapsed without receiving the start operation (yes in step S23), the main control unit of the controller 6 performs the process of step S21. That is, the notification control unit 67 performs control of notifying again a predetermined message indicating that the power supply to the electronic equipment group via the battery 4 is stopped.

The other processing of the second embodiment is the same as that of the first embodiment described above, and therefore, the description thereof is omitted.

In the second embodiment described above, even when the elapsed time from the start of energization has elapsed after the reference time T1 (yes in step S13), energization to the electronic device group is not immediately stopped, but an intention to stop energization is notified in advance (steps S21 to S24). Further, if a continuing operation for continuing the energization is performed before the reference time T2 elapses, the energization can be maintained even if the engine 2 is not operated to start. This enables the worker related to the work, such as an operator, a work manager, a worker who performs maintenance, to maintain the energization of the electronic equipment group without interrupting various kinds of work while extracting log data indicating the operation state of the equipment or performing maintenance, that is, in a case where the worker wants to maintain the energization of the electronic equipment group without starting the engine 2.

In the second embodiment, even when the elapsed time from the start of energization has elapsed after the reference time T1 (yes in step S13), the engine 2 can be started by performing the above-described continuation operation until the reference time T2 has elapsed and performing the operation (start operation) of pressing the start key 3 until the reference time T3 has elapsed since the continuation operation.

Third embodiment

Next, a third embodiment will be described with reference to the flowchart of fig. 4. The third embodiment is a modification of the second embodiment. The process performed by the controller 6 according to the third embodiment is different from the process performed by the controller 6 according to the second embodiment in that steps S31 to S34 shown in fig. 4 are further included. Hereinafter, the configuration according to the third embodiment will be described mainly focusing on the differences from the second embodiment.

In fig. 4, the processing of steps S31 and S32 determines whether or not a preset fourth power consumption suppressing condition is satisfied. When the fourth power consumption suppressing condition is satisfied (yes at step S32), battery control unit 62 performs control to stop power supply to the electronic device (step S16). The details are as follows.

As shown in fig. 4, the main control unit of the controller 6 according to the third embodiment executes determination processing (S31, S32) for determining whether or not to continue the energization according to whether or not the door 12 of the cab 11 is opened after the energization is started (S12). The main control unit of the controller 6 according to the third embodiment performs a confirmation process before locking the door, instead of locking the door immediately after the power supply to the electronic device group is stopped (S33, S34).

Specifically, in step S31, the main control unit of the controller 6 determines whether or not the door opening/closing detection unit 64 detects an opening operation of the door 12 for opening the cab. If it is determined that the opening operation is detected (yes at S31), the main control section of the controller 6 performs the process of step S13. On the other hand, if it is determined that the opening operation has not been detected (in the closed state) (no at S31), the main control section of the controller 6 performs the process of step S32.

In step S32, the main control unit of the controller 6 determines whether or not the elapsed time from the start of energization to the electronic device group exceeds a reference time T4. The reference time T4 is an example of the fourth reference time. The reference time T4 is a preset time threshold and can be set to any value by the operator. The reference time T4 according to the third embodiment is set to a value smaller than the reference time T1. This makes it possible to promptly perform control of stopping energization in a case where an opening operation has not been performed after the energization to the electronic equipment group is started, and it is possible to more effectively suppress power consumption of the battery 4. However, the reference time T4 may be the same value as the reference time T1 or may be a value larger than the reference time T1.

If it is determined that the elapsed time from the start of energization does not exceed the reference time T4 (no at S32), the main control section of the controller 6 performs the process of step S31. On the other hand, if it is determined that the elapsed time from the start of energization exceeds the reference time T4 (yes at S32), the main control unit of the controller 6 performs the process of step S16. That is, the battery control unit 62 performs control of stopping the supply of electric power from the battery 4 and stopping the energization to the electronic device group.

In step S33, the main control unit of the controller 6 determines whether or not the door opening/closing detection unit 64 detects that the door 12 of the cab 11 is closed. If it is determined that the door 12 is closed (yes at S33), the main control section of the controller 6 performs the process of step S34. On the other hand, if it is determined that the door is not closed (no at S33), the main control section of the controller 6 stops the energization to the electronic device group, and ends the processing in a state where the door is opened.

In step S34, the main control unit of the controller 6 determines whether the key is left in the cab 11. If it is determined that the key has not been left (no at S34), the main control unit of the controller 6 performs the process of step S17. That is, the lock control unit 66 controls the operation of the door lock 13 so that the door 12 is locked. On the other hand, if it is determined that the key is left (yes at S34), the main control unit of the controller 6 ends the process in a state where the door 12 is unlocked.

The determination as to whether or not the key is left in cab 11 may be performed, for example, as follows. When the key is an electronic key, the controller 6 further includes a receiving device capable of receiving a radio wave transmitted from the electronic key, and the main control unit of the controller 6 can determine that the key is left in the cab 11 when the receiving device receives the radio wave indicating that the key is left in the cab 11.

The other processing of the third embodiment is the same as that of the second embodiment described above, and therefore, the description thereof is omitted.

In the third embodiment described above, if the door is not opened during the period from the start of energization until the elapse of the reference time T4 (yes at S32), energization to the electronic device group is stopped (S16). That is, if the door is not opened all the time after the start of energization, it is considered that the operator has no intention to start the engine 2, and energization to the electronic equipment group is forcibly stopped, so that power consumption of the battery 4 can be promptly reduced.

In the third embodiment, on condition that the key is not left in the cab (no at S34), the door is automatically locked (S17). Therefore, it is possible to prevent the door from being locked (locked) in a state where the key is left in the cab.

Fourth embodiment

Next, a fourth embodiment will be described with reference to a flowchart of fig. 5. The fourth embodiment is a modification of the second embodiment described above. The process performed by the controller 6 relating to the fourth embodiment differs from the process performed by the controller 6 relating to the second embodiment in that step S41 shown in fig. 5 differs from step S11 shown in fig. 3 and further includes step S42 shown in fig. 5. Hereinafter, the configuration according to the fourth embodiment will be described mainly focusing on the differences from the second embodiment.

In the fourth embodiment shown in fig. 5, the above-mentioned energization instruction is not only the unlocking operation of unlocking the door 12 but also the opening operation of opening the door 12, and the opening operation can be detected by the door opening/closing detection portion 64.

Specifically, in step S41 of fig. 5, the main control unit of the controller 6 determines whether or not the opening operation of the door 12 is detected by the door opening/closing detection unit 64. If the on operation (power-on instruction) is detected (yes at S41), the main control section of the controller 6 performs the process of step S12, thereby starting power-on to each electronic device of the electronic device group.

In the fourth embodiment, after the energization is stopped (S16), the main control unit of the controller 6 determines whether or not the door 12 of the cab 11 is detected to be closed by the door opening/closing detection unit 64 (S42). If it is determined that the door 12 is not closed (kept open) (no at S42), the main control section of the controller 6 ends the process without locking the door 12. On the other hand, if it is determined that the door 12 is closed (yes at S42), the main control section of the controller 6 performs the process of step S17. That is, the lock control unit 66 controls the operation of the door lock 13 so that the door 12 is locked. Thus, even if the operator does not perform the operation of switching the door lock 13 to the locked state, the door 12 is automatically locked. In addition, the locking of the door 12 may be performed immediately when it is judged that the door 12 is closed, or may be performed after a certain time has elapsed after it is judged that the door 12 is closed.

In the fourth embodiment, since a specific operation by a worker or other work-related person, such as an opening operation of the door 12, is set as the energization instruction, energization to the electronic equipment group can be started when there is a high possibility that the engine 2 is started.

The other processing of the fourth embodiment is the same as that of the second embodiment described above, and therefore, the description thereof is omitted. In the fourth embodiment, the door opening/closing detector 64 is an example of an energization instruction detector.

Fifth embodiment

Next, a fifth embodiment will be described with reference to a block diagram of fig. 6 and a flowchart of fig. 7. The fifth embodiment is a modification of the first embodiment described above. Hereinafter, the configuration according to the fifth embodiment will be described mainly focusing on the differences from the first embodiment.

As shown in fig. 6, in the fifth embodiment, the controller 6 includes an electronic key detection unit 68 in addition to the control units 61, 62, 66, and 67, the detection units 63 and 64, and the timer unit 65.

The electronic key detection unit 68 is a detection unit for detecting that the electronic key is present within a preset reference range. The reference range is a range in which the electronic key detecting unit 68 can detect the electronic key, and may be set to a range having an equal interval from the base point, or may be set to an arbitrary interval, for example.

Specifically, the electronic key detecting unit 68 includes a receiving device capable of receiving the radio wave transmitted from the electronic key. In this case, the reference range may be the entire range of the range in which the receiving device can receive the radio wave transmitted by the electronic key or may be a partial range of the range in which the receiving device can receive the radio wave transmitted by the electronic key. The electronic key is held by an operator, for example. The electronic key detecting unit 68 may be disposed at any position of the cab 11 of the hydraulic excavator 1, for example, but the position at which the electronic key detecting unit 68 is disposed may be a position other than the cab 11 in the hydraulic excavator 1.

If the electronic key detecting unit 68 detects that the electronic key is present in the reference range, a signal indicating the presence of the electronic key is input to the main control unit of the controller 6.

In the fifth embodiment shown in fig. 7, the energization instruction is not an unlocking operation for unlocking the door 12, and the electronic key detected by the electronic key detecting unit 68 is present in the reference range.

Specifically, as shown in fig. 7, in step S51, the main control unit of the controller 6 determines whether or not the electronic key is detected in the reference range by the electronic key detecting unit 68. If the electronic key is detected in the reference range (yes at S51), it is determined that the above-described energization instruction is accepted, and the main control unit of the controller 6 performs the process of step S12, thereby starting energization to each electronic device of the electronic device group.

The other processing of the fifth embodiment is the same as that of the first embodiment, and therefore, the description thereof is omitted. In the fifth embodiment, the electronic key detecting unit 68 is an example of an energization instruction detecting unit.

Sixth embodiment

Next, a sixth embodiment will be described with reference to a conceptual diagram of fig. 8 and a flowchart of fig. 9. The sixth embodiment is a modification of the fifth embodiment described above. Hereinafter, the description will be given mainly on the differences from the fifth embodiment among the configurations according to the sixth embodiment.

In the sixth embodiment, the controller 6 includes an electronic key detecting unit 68 shown in fig. 6. As shown in fig. 8, the electronic key detecting unit 68 can detect that the electronic key 14 is present in the reference range AR1 and that the electronic key 14 is present in the reference range AR2 closer to the cab 11 of the hydraulic excavator 1 than the reference range AR1, respectively. The reference range AR1 is a preset range and is an example of a first reference range, and the reference range AR2 is a preset range and is an example of a second reference range.

Specifically, the electronic key detecting unit 68 includes a first receiving device and a second receiving device that can receive the radio wave transmitted by the electronic key 14. The range in which the first receiving device can receive the electric wave transmitted from the electronic key 14 is larger than the range in which the second receiving device can receive the electric wave transmitted from the electronic key 14. In this case, the reference range AR1 may be a range other than the range receivable by the second receiving apparatus among the ranges receivable by the first receiving apparatus, and the reference range AR2 may be a range receivable by the second receiving apparatus. The electronic key detection unit 68 may be configured to detect the reference range AR1 and the reference range AR2 that can be received by one receiving device. The electronic key 14 is held by an operator, for example. The electronic key detection unit 68 may be disposed at any position of the cab 11, for example, but the position at which the electronic key detection unit 68 is disposed may be a position other than the cab 11.

In the sixth embodiment shown in fig. 9, the energization instruction is a case where the electronic key detecting unit 68 detects that the electronic key 14 is present in the reference range AR2 closer to the cab 11 after the electronic key 14 is detected in the reference range AR1 and until the reference time T5 elapses.

Specifically, as shown in fig. 9, in step S61, the main control unit of the controller 6 determines whether or not the electronic key 14 is detected in the reference range AR1 by the electronic key detecting unit 68. If the electronic key 14 is detected in the reference range AR1 (yes at S61), the main control unit of the controller 6 performs the process of step S62.

In step S62, the main control unit of the controller 6 determines whether or not the electronic key 14 is detected in the reference range AR2 closer to the cab 11 until the reference time T5 elapses after the electronic key 14 is detected in the reference range AR 1. The reference time T5 is an example of a fifth reference time. The reference time T5 may be set to any value by the operator. For example, the reference time T5 may be set in consideration of data on an average time required from the time when the operator enters the reference range AR1 until the operator enters the reference range AR2, but the setting method of the reference time T5 is not limited to this.

If the electronic key 14 is detected in the reference range AR2 before the reference time T5 elapses ("yes" at S62), it is determined that the above-described energization instruction is accepted, and the main control unit of the controller 6 starts energization to each electronic device of the electronic device group by performing the processing of step S12.

In the above-described sixth embodiment, if the electronic key 14 is detected in the reference range AR2 closer to the cab 11 before the reference time T5 elapses after the electronic key 14 is detected in the reference range AR1, the energization is started. In the sixth embodiment, when there is a relatively high possibility that a person involved in work, such as an operator having the electronic key 14, approaches the cab 11 of the hydraulic excavator 1 and starts the engine 2, the energization may be started. Therefore, compared with the fifth embodiment in which the energization is started immediately after the electronic key 14 is detected in the reference range, the sixth embodiment can suppress unnecessary energization to the electronic device group, and as a result, power consumption of the battery 4 is also suppressed.

Seventh embodiment

Next, a seventh embodiment will be described with reference to a flowchart of fig. 10. The seventh embodiment is a modification of the sixth embodiment described above. Hereinafter, the configuration according to the seventh embodiment will be described mainly focusing on the differences from the sixth embodiment.

As shown in fig. 10, the process performed by the controller 6 according to the seventh embodiment is different from the process performed by the controller 6 according to the sixth embodiment shown in fig. 9 in that step S71 is further included.

In step S71, the main control unit of the controller 6 determines whether or not the electronic key 14 has been detected again in the second reference range AR2 by the electronic key detecting unit 68 when the reference time T6 has elapsed since the electronic key 14 was detected in the second reference range AR 2.

When the electronic key 14 is detected again in the second reference range AR2 (yes in S71) after the reference time T6 has elapsed, it is determined that the above-described energization instruction is accepted, and the main control unit of the controller 6 starts energization to each electronic device of the electronic device group by performing the processing of step S12.

On the other hand, if the electronic key 14 is not detected again in the second reference range AR2 when the reference time T6 has elapsed (no in S71), the main control unit of the controller 6 executes the process of step S61 because the operator or other work related person holding the electronic key 14 leaves the hydraulic excavator 1 (i.e., the possibility of starting the engine 2 is low).

In the seventh embodiment described above, when the operator or other work related person holding the electronic key 14 approaches the hydraulic excavator 1 and then leaves the hydraulic excavator 1 (only when the operator passes near the hydraulic excavator 1), the energization of the electronic equipment group is not started, and therefore, the power consumption of the battery 4 can be suppressed.

Modification example

The present invention is not limited to the above-described embodiments, and various modifications and improvements can be made within the scope of the claims.

First modification

For example, in the above-described embodiments, the case where the engine 2 is started immediately when the start key 3 is pressed to receive a start operation for starting the engine 2 has been described as an example, but the present invention is not limited to this. As shown in fig. 1 and 6, the hydraulic excavator 1 may further include a hydraulic lock lever 7 (a lowering/ascending blocking lever) that switches between a locked state and an unlocked state. In this case, in order to prevent the accessory or the like from performing an operation unexpected by the operator, if a start operation to start the engine 2 is accepted, the main control unit of the controller 6 determines whether or not the hydraulic lock lever 7 is in the locked state, and the engine control unit 61 may perform control to start the engine 2 on condition that the hydraulic lock lever 7 is determined to be in the locked state.

In the modification described above, when it is determined that the hydraulic lock lever 7 is not in the locked state, the main control unit of the controller 6 may give a warning not to start the engine 2. As a specific method of the warning, a message may be displayed on the operation panel 5, an alarm lamp may be turned on, or a voice notification may be performed. In addition, the hydraulic lock lever 7 is an example of a lock mechanism. The locking mechanism may also be hydraulic free. Further, the lock mechanism may not include a lever.

Second modification example

In the above-described embodiments, the case where the energization of the electronic equipment group is automatically started in response to the energization instruction and the engine 2 is started by causing the operator to manually operate the start key 3 has been described as an example, but the present invention is not limited to this. The operation from the energization of the electronic equipment group to the start of the engine 2 may be automatically performed by the main control unit of the controller 6.

The hydraulic excavator 1 according to the second modification example has the following configuration, for example. That is, the hydraulic excavator 1 may include the engine 2, the battery 4 for supplying power, and the controller 6, the controller 6 may include an engine control unit 61 for controlling the engine 2, a battery control unit 62 for controlling the power supply of the battery 4, and a power-on instruction detection unit for detecting a power-on instruction for supplying the battery 4 to the electronic device and starting power-on to the electronic device, the electronic device requiring operation confirmation before starting the engine 2, the battery control unit 62 may perform control for starting power-on to the electronic device by supplying the battery 4 to the electronic device in response to the power-on instruction detection unit detecting the power-on instruction, and the engine control unit 61 may perform control for starting the engine 2 in response to completion of the operation confirmation after the electronic device is powered on. In the second modification, at least one of the activation operation receiving unit and the timer unit may be omitted.

In the second modification, if the energization of the electronic equipment group is started to complete the operation confirmation condition of the electronic equipment group, the engine 2 can be automatically started by the engine control unit 61 even if the start operation is not performed by the operator. In this case, it is preferable to add the condition that the hydraulic lock lever 7 is in the locked state as the condition for automatically starting the engine 2 from the viewpoint of safety.

In the second modification, the engine control unit 61 performs control to start the engine 2 in response to completion of the operation check after the electronic device is powered on, and therefore the engine can be started without the operator performing the start operation. Therefore, unnecessary power consumption of the battery 4 after the start of energization from the battery 4 to the electronic apparatus can be suppressed, and a reduction in the remaining amount of the battery 4 can be suppressed. In the second modification, since the control of starting the engine 2 in response to the completion of the operation confirmation is performed, the engine 2 can be started relatively quickly, and therefore, the standby time for the warm-air operation following the start of the engine 2 can be shortened.

In the second modification, the energization instruction is preferably an instruction based on an operation performed by an operator of the construction machine outside the cab 11 of the construction machine before the engine 2 is started. In this case, the standby time (standby time with confirmation of the operation of the electronic device group) from when the operator is seated in the cab until the engine 2 can be started can be shortened.

Third modification example

In each of the above embodiments, for example, in order to ensure safety when the cab 11 is being lifted, the main control unit of the controller 6 may perform control for starting energization and control for lighting the illumination provided in the cab 11. The timing of turning on the illumination may be at the same time as the start of energization or after a lapse of time from the start of energization.

Fourth modification example

In the fourth embodiment, as shown in fig. 5, if the door opening/closing detection unit 64 detects an opening operation (yes at S41), it is determined that the above-described energization instruction has been accepted, and control is performed to start energization. For example, in a state where door 12 of cab 11 is opened, the opening operation of door 12 is not detected as the energization instruction. For this reason, only when the door 12 is opened, the electronic key may be detected as the energization instruction in the reference range by the electronic key detecting unit 68 shown in fig. 6.

Fifth modification example

In the above-described fifth embodiment, the determination process of step S13 is performed immediately after the energization of step S12 is started as shown in fig. 7, but is not limited thereto. For example, a fifth modification shown in fig. 11 may be employed. In the fifth modification, the process of step S52 determines whether or not the fifth power consumption suppressing condition is satisfied. When the fifth power consumption suppressing condition is satisfied (no at step S52), battery control unit 62 performs control to stop power supply to the electronic device (step S16). The details are as follows.

As shown in fig. 11, after the control to start the energization of each electronic device of the electronic device group is performed at step S12, the main control unit of the controller 6 determines again whether or not the electronic key is detected in the reference range at step S52, and if the electronic key is detected (yes at S52), the process of step S13 is performed. If the electronic key is not detected in the reference range in step S52 (no in S52), it is assumed that the operator or other work related person who holds the electronic key leaves the hydraulic excavator 1. In this case, the battery control unit 62 stops the power supply to the electronic device group by performing the process of step S16.

In the fifth modification, it is assumed that the operator who holds the electronic key or another work related person leaves the hydraulic excavator 1 and does not have an intention to start the engine 2, so that the energization of the electronic equipment group is promptly stopped, and the power consumption of the battery 4 can be suppressed.

Sixth modification example

In the fifth embodiment, it is described as an example that the above-described energization instruction is determined to be accepted when the electronic key is detected in the reference range. In other words, in the fifth embodiment, the energization instruction is a case where the electronic key is present in the reference range, but the present invention is not limited to this. For example, the energization instruction detecting unit may be configured to detect that the electronic key is operated in a reference range, and the energization instruction may be configured to detect that the electronic key is operated in the reference range. Examples of the operation of the electronic key in the reference range include, but are not limited to, an operation of unlocking a door. When the electronic key is operated, the electronic key transmits a radio wave corresponding to the operation, and the receiving device of the power-on instruction detecting section receives the radio wave. Thus, the power-on instruction detection unit can detect that the electronic key is operated in the reference range.

According to the above-described modification, since a specific operation performed on the electronic key, that is, a specific operation by a worker or other work-related person is detected as the energization instruction, the energization can be started when there is a high possibility of starting the engine 2.

Seventh modification example

In each of the above embodiments, the control (power consumption suppressing control) for suppressing the power consumption of the battery 4 performed when at least one power consumption suppressing condition is satisfied includes control for stopping the power supply to the electronic apparatus, but is not limited thereto. The power consumption suppressing control may be control for reducing the amount of power supplied to the electronic device when at least one power consumption suppressing condition is satisfied, for example.

Eighth modification example

In each of the above embodiments, hydraulic excavator 1 includes door opening/closing detection unit 64, and door opening/closing detection unit 64 may detect the opening operation and closing operation of door 12, respectively, but is not limited thereto. In each embodiment, hydraulic excavator 1 may include a door opening detection unit that can detect only an opening operation of door 12 out of an opening operation and a closing operation, instead of the door opening/closing detection unit.

As described above, the present invention provides a construction machine that can suppress a reduction in the remaining amount of a battery after the start of energization to an electronic device.

The provided construction machine includes: an engine; a start operation reception unit that receives a start operation for starting the engine; a battery for supplying power; and a control device. The control device is provided with: an engine control unit that controls the engine; a battery control unit that controls supply power of the battery; a power-on instruction detection unit that detects a power-on instruction to start power-on to an electronic device that requires operation confirmation before starting the engine in order to supply power of the battery to the electronic device; and a timer unit that counts an elapsed time from the start of energization of the electronic device. The battery control unit performs control for starting energization of the electronic apparatus by supplying power of the battery to the electronic apparatus in response to the energization instruction detected by the energization instruction detection unit. The engine control unit performs control to start the engine when the starting operation is accepted by the starting operation accepting unit before the elapsed time exceeds a first reference time set in advance. The control device performs control (power consumption suppression control) for suppressing power consumption of the battery when at least one preset power consumption suppression condition is satisfied after the start of energization of the electronic device and before the engine is started.

In the construction machine, the engine control unit performs control for starting the engine when the starting operation is received by the starting operation receiving unit before an elapsed time from the start of energization of the electronic device exceeds a first reference time; and a control device that performs power consumption suppression control when the at least one power consumption suppression condition is satisfied after power supply to the electronic device is started and before the engine is started. Therefore, even when the power supply to the electronic device is started but the starting operation for starting the engine is not performed, unnecessary power consumption of the battery can be suppressed, and the remaining amount of the battery can be suppressed from decreasing.

The specific embodiment of the at least one power consumption suppressing condition and the power consumption suppressing control is preferably, for example, the following embodiment, but is not limited thereto.

Preferably, the at least one power consumption suppressing condition includes a first power consumption suppressing condition that the elapsed time after the start of the power supply to the electronic apparatus is not yet received by the start operation receiving unit exceeds the first reference time, and the battery control unit performs control to stop the power supply to the electronic apparatus when the first power consumption suppressing condition is satisfied.

In this embodiment, since the energization of the electronic apparatus is stopped when the start-up operation has not been performed after the first reference time has elapsed after the energization of the electronic apparatus is started, wasteful power consumption of the battery can be more effectively suppressed, and the reduction in the remaining amount of the battery can be more effectively suppressed.

Preferably, in the case where the control device further includes a notification control unit, the at least one power consumption suppression condition includes a first power consumption suppression condition in which the elapsed time exceeds the first reference time after the start of the energization of the electronic device and the start operation is not yet received by the start operation reception unit, and the notification control unit performs a predetermined control of notifying that the energization of the electronic device is stopped when the first power consumption suppression condition is satisfied.

In this embodiment, the notification performed when the elapsed time exceeds the first reference time may prompt the operator to appropriately respond to the situation, such as making the operator recognize that the engine start operation has not been performed, or making the operator perform an operation to stop the power supply to the electronic device. As a result, when the operator appropriately responds, unnecessary power consumption of the battery can be suppressed, and the remaining amount of the battery can be suppressed from decreasing.

Preferably, the at least one power consumption suppressing condition further includes a second power consumption suppressing condition that a preset continuing operation for continuing the energization of the electronic device has not been performed yet and a preset second reference time has elapsed since the notification by the notification control unit, and the battery control unit performs control for stopping the energization of the electronic device when the second power consumption suppressing condition is satisfied.

In this embodiment, since the power supply to the electronic device is stopped when the second reference time has elapsed since the notification was made even if the notification was made but the continuation operation was not made, wasteful power consumption of the battery can be suppressed, and the remaining amount of the battery can be suppressed from decreasing. On the other hand, if the continuing operation is performed until the second reference time elapses after the notification, the battery control unit may perform control to continue the energization of the electronic device without performing control to stop the energization of the electronic device at a time point when the second reference time elapses from the notification. Further, if the continuous operation is performed until a second reference time elapses after the notification, the battery control unit may perform control to stop the energization to the electronic device when a preset time longer than the second reference time elapses from the notification.

Preferably, the at least one power consumption suppressing condition further includes a third power consumption suppressing condition that the startup operation is not accepted by the startup operation accepting unit from the time when the continuous operation is performed until the second reference time elapses after the notification, and the notification control unit performs the predetermined control of notifying again as stopping the energization of the electronic device when the third power consumption suppressing condition is satisfied.

In this embodiment, the above-described re-notification may again urge the operator to appropriately respond to the situation, such as making the operator recognize that the engine start operation has not been performed, or making the operator perform an operation of stopping the power supply to the electronic device. As a result, when the operator appropriately responds, unnecessary power consumption of the battery can be suppressed, and the remaining amount of the battery can be suppressed from decreasing.

Preferably, the control device further includes a door opening detection unit that detects an opening operation of a door of a cab of the construction machine, wherein the at least one power consumption suppression condition includes a fourth power consumption suppression condition in which an elapsed time exceeds a preset fourth reference time without detection of the opening operation by the door opening detection unit after the start of energization of the electronic device, and the battery control unit performs control to stop energization of the electronic device when the fourth power consumption suppression condition is satisfied.

However, the above patent document 1 proposes a technique for simplifying the starting of the engine in the technical field of the construction machine. Specifically, in patent document 1, if the lock lever (13) is in the locked position and the portable key (41) is within the range in which authentication is possible, the operator can start the engine (15) only by operating the power switch (12). However, in the above-described press-start type construction machine, it takes a certain amount of time to check whether or not an application program or an electronic device for electronic control is operating normally, and therefore there is a problem that a standby time from the on operation to the engine start is long. In recent years, the time for inspection tends to increase with the increase in the number of devices to be electronically controlled, and the standby time described above becomes a great annoyance to the operator. Further, in the press-start type construction machine described in patent document 1, insertion or rotation operation of a key is not required. However, patent document 1 does not mention the inspection of the application or the electronic device, and the construction machine according to patent document 1 still has the problem of the standby time described above.

In order to shorten the standby time, it is preferable that the energization instruction is an instruction based on an operation performed by a worker such as an operator of the construction machine outside a cab of the construction machine before the engine is started.

In this embodiment, the battery control unit performs control for starting energization of the electronic device by supplying power of the battery to the electronic device in response to detection of an energization instruction by the energization instruction detection unit based on an operation of a work related person such as an operator outside the cab. Therefore, it is possible to start the energization of the electronic device before a worker such as an operator enters the cab. This can shorten the waiting time from when a worker such as an operator sits in the cab to when the engine can be started.

The above-described embodiment can be applied to a construction machine such as a hydraulic excavator in which a standby time until the engine can be started is relatively long.

A specific embodiment of the energization instruction based on the operation performed by the operator or the like outside the cab is preferably, for example, the following, but is not limited thereto.

That is, preferably, the energization instruction detecting unit detects an unlocking operation for unlocking a door of a cab of the construction machine, and the energization instruction is the unlocking operation. Preferably, the energization instruction detection unit detects an opening operation of opening a door of a cab of the construction machine, and the energization instruction is the opening operation.

In these embodiments, the unlocking operation and the opening operation are based on the operations performed by a worker or other work-related person outside the cab, and the possibility that the engine is started after the operations are performed separately is high. Therefore, by setting either one of the unlocking operation and the opening operation as the energization instruction, it is possible to start energization to the electronic device at a timing that takes into account the possibility of the engine being started, that is, at an appropriate timing before the operator or other work-related person enters the cab.

Further, the power supply instruction based on the operation performed by the operator outside the cab may preferably be configured as follows, for example.

That is, preferably, the power-on instruction detection unit detects that the electronic key is present in a preset reference range, and the power-on instruction is that the electronic key is present in the reference range. Preferably, the power-on instruction detecting unit detects that the electronic key is operated in a preset reference range, and the power-on instruction is that the electronic key is operated in the reference range.

In these embodiments, the presence of the electronic key in the reference range and the operation of the electronic key in the reference range are based on the operations performed outside the driver's cab by the operator who holds the electronic key, respectively, and the possibility that the engine is started after performing these operations, respectively, is relatively high. Therefore, in these embodiments, the energization of the electronic device can be started at a timing that takes into account the possibility of the engine being started, that is, at an appropriate timing before the operator enters the cab.

The at least one power consumption suppressing condition and the specific embodiment of the power consumption suppressing control may preferably be configured as follows, for example.

That is, the at least one power consumption suppressing condition includes a fifth power consumption suppressing condition that the electronic key is not detected in the reference range after the start of the energization of the electronic device, and the battery control unit performs control to stop the energization of the electronic device when the fifth power consumption suppressing condition is satisfied.

As shown in this embodiment, when the electronic key is not detected in the reference range, the possibility that the operator starts the engine later is low. Therefore, this embodiment can stop the power supply to the electronic apparatus at an appropriate timing.

Further, the power supply instruction based on the operation performed by the operator outside the cab may preferably be, for example, the following instruction.

In other words, it is preferable that the energization instruction detecting unit detects that an electronic key exists in a first reference range set in advance and that the electronic key exists in a second reference range set in advance closer to the construction machine than the first reference range, respectively, and the energization instruction is that the electronic key exists in the second reference range after a fifth reference time set in advance has elapsed since the electronic key was detected in the first reference range.

The presence of the electronic key in the second reference range after a lapse of a certain time (a fifth reference time) from the detection of the electronic key in the first reference range is based on an operation performed outside the driver's cab by an operator having the electronic key. Further, the possibility that the operator starts the engine after performing the operation is high. Therefore, this embodiment can start the energization to the electronic equipment at a timing in consideration of the possibility that the engine is started, that is, at an appropriate timing before the operator enters the cab.

Preferably, the construction machine further includes a lock mechanism capable of switching between a locked state and an unlocked state, wherein the engine control unit executes control to start the engine when the start operation reception unit receives the start operation and the lock mechanism is in the locked state before the elapsed time exceeds a first reference time.

In this embodiment, since the engine is not started in the locked state of the lock mechanism, the safety can be further improved.

Further, the construction machine includes an engine, a battery for supplying power, and a control device, wherein the control device includes: an engine control unit that controls the engine; a battery control unit that controls supply power of the battery; and a power-on instruction detecting unit that detects a power-on instruction to start power-on to an electronic device that requires operation confirmation before starting the engine, in order to supply power of the battery to the electronic device, wherein the battery control unit performs control to start power-on to the electronic device by supplying power of the battery to the electronic device in response to the power-on instruction detected by the power-on instruction detecting unit; the engine control unit performs control to start the engine in response to completion of the operation check after the electronic device is powered on.

In this construction machine, the engine control unit performs control to start the engine in response to completion of the operation confirmation, and thus the engine is started even if the operator does not perform the start operation. Therefore, unnecessary power consumption of the battery after the start of energization from the battery to the electronic apparatus can be suppressed, and a reduction in the remaining amount of the battery can be suppressed.