阅读说明：本技术 起动机、车辆和车辆的控制方法 (Starter, vehicle, and control method of vehicle ) 是由 卢卫波 尚星宇 于 2021-08-27 设计创作，主要内容包括：本发明提出了一种起动机、车辆和车辆的控制方法,起动机包括：电机,电机包括转子、以及穿设于转子的转轴；温度检测装置,至少部分设置于转轴内,并用于检测转轴的温度。本发明可精确检测转子的转轴温度,并根据转子的转轴温度控制起动机的电机启动或关闭,提升电机以及整个起动机的可靠性,延长电机以及整个起动机的使用寿命。(The invention provides a starter, a vehicle and a control method of the vehicle, wherein the starter comprises the following components: the motor comprises a rotor and a rotating shaft penetrating through the rotor; and the temperature detection device is at least partially arranged in the rotating shaft and is used for detecting the temperature of the rotating shaft. The invention can accurately detect the temperature of the rotating shaft of the rotor, and controls the starting or closing of the motor of the starter according to the temperature of the rotating shaft of the rotor, thereby improving the reliability of the motor and the whole starter, and prolonging the service life of the motor and the whole starter.)

1. A starter, comprising:

the motor comprises a rotor and a rotating shaft penetrating through the rotor;

and the temperature detection device is at least partially arranged in the rotating shaft and is used for detecting the temperature of the rotating shaft.

2. The starter according to claim 1,

the rotating shaft is hollow, and one end of the rotating shaft is provided with an opening;

at least part of the temperature detection device is arranged in the rotating shaft and extends to the outside of the rotating shaft through the opening.

3. The starter according to claim 1, wherein the temperature detection means includes:

the temperature sensor is arranged in the rotating shaft and used for detecting the temperature of the rotating shaft;

the conducting assembly is at least partially arranged in the rotating shaft and is electrically connected with the temperature sensor;

the conductive component includes:

the insulation rod is internally provided with a lead, and the lead is electrically connected with the temperature sensor;

the first electrode is arranged on the insulating rod and is electrically connected with the lead;

the second electrode is arranged on the end cover of the motor and is electrically connected to the first electrode;

an insulator disposed between the second electrode and the end cap.

4. Starter according to claim 3,

the end part of the insulating rod is provided with a mounting groove, and at least part of the first electrode is positioned in the mounting groove;

the conducting component further comprises an elastic piece, and the elastic piece abuts between the bottom wall of the mounting groove and the first electrode.

5. A vehicle, characterized by comprising:

the starter according to any one of claims 1 to 4;

the engine is connected with the starter;

and the controller is electrically connected with the temperature detection device and can control the starting and stopping of the starter according to the detection result of the temperature detection device.

6. The vehicle of claim 5, further comprising:

the rotating speed detection device is electrically connected with the controller and is used for detecting the rotating speed of the engine;

the load detection device is electrically connected with the controller and is used for detecting the load of the engine;

the relay is electrically connected with the motor and the controller, the relay is powered on to start the motor, and the relay is powered off to close the motor;

a storage battery electrically connected to the controller;

the controller is further used for controlling starting and stopping of the starter according to the detection result of the rotating speed detection device, the detection result of the load detection device, the state of the relay and the state of the storage battery.

7. A control method of a vehicle, usable with the vehicle according to claim 5 or 6, characterized by comprising:

acquiring a first operation parameter of the vehicle when the starter operates, and judging that the first operation parameter meets a first stop condition;

and controlling the starter to stop working based on the first operation parameter meeting the first stop condition.

8. The control method of a vehicle according to claim 7,

the first operating parameter includes: a first temperature of the shaft, the first shutdown condition comprising: the first temperature is greater than or equal to a first temperature threshold;

and/or, the first operating parameter comprises: a first speed of the engine, the first shutdown condition comprising: the first speed is greater than or equal to a first speed threshold;

and/or, the first operating parameter comprises: after the starter operates for a set period of time, the first stop condition comprises: the second rotational speed is less than a second rotational speed threshold, which is less than the first rotational speed threshold.

9. The control method of a vehicle according to claim 8, characterized by further comprising:

acquiring a second operation parameter of the vehicle when the starter is stopped, and judging that the second operation parameter meets a starting condition;

controlling the starter to start working based on the second operation parameter meeting the starting condition;

wherein the second operating parameter comprises: a load of the engine, a third rotational speed of the engine, a second temperature of the rotating shaft;

the starting-up conditions include: the load is zero, the third rotating speed is zero, and the second temperature is less than or equal to a second temperature threshold value;

the second temperature threshold is less than the first temperature threshold.

10. The control method of a vehicle according to claim 9,

the second operating parameter further comprises: the starting voltage of the starter and the control condition of a control loop where a relay of the vehicle is located;

the boot conditions further include: the starting voltage is greater than or equal to a voltage threshold, and the control loop satisfies the control condition.

Technical Field

The invention relates to the technical field of vehicles, in particular to a starter, a vehicle and a control method of the vehicle.

Background

At present, the motor overheating damage is the fault with the highest incidence rate in all faults of the starter. Particularly in cold regions with higher altitude, the storage battery capacity of the vehicle parked outdoors is insufficient due to low temperature, and the diesel engine is difficult to start, so that a user is in a hurry to start the vehicle, and the electric starter is continuously electrified to start. Therefore, after continuous large current passes through the rotor and the stator coil of the motor, a large amount of heat is generated, the motor is finally damaged, the service life of the starter is influenced if the motor is damaged, and the starter is burnt out in the field if the motor is damaged.

In the related technology, a temperature sensing switch is added at a carbon brush of a starter motor and is connected in series with a coil control loop of a starting relay; when the temperature is high, the temperature sensitive switch cuts off a coil control loop of the starting relay. However, the temperature at the carbon brush mainly comes from the friction heating of the carbon brush and the slip ring, and the overheating of the motor is mainly caused by the heat generated when the rotor coil is electrified with large current, so the arrangement cannot play a role in protecting the motor. And the temperature sensing switch is connected in series with a coil control loop of the starting relay, and when the temperature sensing switch is disconnected, the controller can send out an open-circuit alarm of the starting relay.

Disclosure of Invention

The present invention is directed to solving or improving at least one of the technical problems of the prior art.

To this end, a first aspect of the invention provides a starter.

A second aspect of the invention provides a vehicle.

A third aspect of the invention provides a control method of a vehicle.

A fourth aspect of the invention provides a control apparatus of a vehicle.

A fifth aspect of the invention provides a readable storage medium.

A first aspect of the present invention provides a starter including: the motor comprises a rotor and a rotating shaft penetrating through the rotor; and the temperature detection device is at least partially arranged in the rotating shaft and is used for detecting the temperature of the rotating shaft.

The starter provided by the invention comprises a motor and a temperature detection device. The motor comprises a stator and a rotor which are matched with each other, and the output mechanism is connected with the rotor of the motor. In the running process of the starter, the rotor drives the output mechanism to rotate, so that the motor outputs torque through the output mechanism. Particularly, a heat radiation fan is not arranged inside the starter, so that in the starting process of the starter, particularly in the frequent starting process of the starter, a large amount of heat can be generated when current passes through a rotor and a stator of the motor, the insulation damage of the rotor and the stator of the motor can be caused, the service life of the starter is influenced if the current is light, and the current is burnt out on site if the current is heavy.

Therefore, the temperature detection device is arranged in the rotating shaft of the rotor, and the temperature of the rotating shaft is detected through the temperature detection device. In use, the temperature detection device is electrically connected with the controller and can send detection data to the controller. After receiving the detection result of the temperature detection device, the controller can control the motor of the starter to be started or closed according to the detection result of the temperature detection device. Therefore, the reliability of the motor and the whole starter can be improved to a great extent, and the service lives of the motor and the whole starter are prolonged.

Specifically, when the temperature of the rotating shaft is detected to be greater than or equal to the first temperature threshold, it indicates that the temperature inside the starter is high at this time, and the motor is at risk of being damaged. At this time, the controller controls the starter to stop operating, and prohibits the motor from starting. Therefore, the condition that the motor is damaged can be avoided, and the service lives of the motor and the starter are ensured. When the temperature of the rotating shaft is detected to be lower than the first temperature threshold value, the temperature inside the starter is proper at the moment, and the motor is not damaged. At this time, the controller controls the starter to operate and allows the motor to start.

Specifically, the Controller may be a vehicle Controller, and may be a Controller of an engine, such as an engine ECU (Electronic Controller Unit).

In addition, the temperature detection device is arranged in the rotating shaft, so that the temperature detection device can directly detect the temperature of the rotating shaft. While the temperature rise of the rotating shaft is directly caused by the current. Therefore, the temperature detected by the temperature detection device is closer to the actual temperature of the motor, so that the temperature detection data is more accurate. Especially compared with the mode of detecting the temperature of the carbon brush of the motor in the related technology, the influence of friction heat generation can be effectively avoided, and the control accuracy of starting and stopping of the starter is further improved.

In some possible designs, the interior of the rotating shaft is hollow, and one end of the rotating shaft is provided with an opening; at least part of the temperature detection device is arranged in the rotating shaft and extends to the outside of the rotating shaft through the opening.

In this design, the interior of the rotating shaft is hollow, and one end of the rotating shaft is provided with an opening. That is, the rotating shaft is provided with a hollow structure with one open end, and the whole rotating shaft is a one-way hollow shaft. In addition, the hollow structure is the mounted position that temperature-detecting device provided for temperature-detecting device can stretch into the inside of pivot from the opening, has realized temperature-detecting device's embedded installation. In addition, the transmission of signals is guaranteed due to the arrangement of the opening, at least one part of the temperature detection device is located outside the rotating shaft, the temperature detection device is guaranteed to be electrically connected with the controller, and transmission of detection data is guaranteed.

In some possible designs, the temperature detection device includes: the temperature sensor is arranged in the rotating shaft and used for detecting the temperature of the rotating shaft; and at least part of the conduction assembly is arranged in the rotating shaft and is electrically connected with the temperature sensor.

In this design, the temperature sensing device includes a temperature sensor and a conductive component. Wherein, temperature sensor sets up in the inside of pivot to laminate mutually with the pivot, temperature sensor can directly detect the temperature of pivot, and avoid leading to the testing result inaccurate because of factors such as friction. At least part of the conducting component is arranged inside the rotating shaft and is electrically connected with the temperature sensor. In addition, the signal line is disposed outside the rotation shaft and electrically connected with the conductive member and the controller.

Therefore, in the using process of the starter, after the temperature sensor detects the temperature of the rotating shaft, the detection result of the temperature sensor can be sent to the controller through the conducting assembly and the signal line, and then the controller controls the starting and stopping of the starter according to the detection result of the temperature sensor.

In some possible designs, the conductive component includes: the insulation rod is internally provided with a lead, and the lead is electrically connected with the temperature sensor; the first electrode is arranged on the insulating rod and is electrically connected with the lead; the second electrode is arranged on the end cover of the motor and is electrically connected to the first electrode; and the insulating part is arranged between the second electrode and the end cover.

In this design, the conductive assembly includes an insulating rod, a first electrode, a second electrode, and an insulator. Wherein, the one end of insulator spindle is provided with above-mentioned temperature sensor to guarantee the stable installation of temperature sensor in the pivot inside. The inside of insulator spindle is provided with the wire, and the one end and the temperature sensor electricity of wire are connected. The first electrode is arranged at the other end of the insulating rod and is positioned at the opening of the rotating shaft, and the first electrode is electrically connected with the other end of the lead. The second electrode is disposed on an end cap of the motor, the second electrode is electrically connected to the first electrode and one end of a signal line of the vehicle, and the other end of the signal line is electrically connected to the controller. In addition, an insulating part is arranged between the second electrode and the end cover of the motor, so that the insulation between the second electrode and the end cover is ensured.

Therefore, in the use process of the starter, after the temperature sensor detects the temperature of the rotating shaft, the detection result of the temperature sensor can be sent to the controller after passing through the lead, the first electrode, the second electrode and the signal wire, and then the controller controls the start and stop of the motor according to the detection result of the temperature sensor.

In some possible designs, the end of the insulating rod is provided with a mounting groove, at least part of the first electrode being located within the mounting groove; the conducting component further comprises an elastic piece which is abutted between the bottom wall of the mounting groove and the first electrode.

In this design, an end of the insulating rod facing the first electrode is provided with a mounting groove, and at least a part of the first electrode is disposed in the mounting groove, so as to reduce the overall structural size of the starter. In addition, the starter also comprises an elastic piece. The elastic piece is arranged in the mounting groove, one end of the elastic piece is abutted to the bottom wall of the mounting groove, the other end of the elastic piece is abutted to the first electrode, and the first electrode is abutted to the second electrode. Specifically, the first electrode is the rotation electrode, and the second electrode is fixed electrode, exists relative rotation between first electrode and the second electrode, and the elastic component can be compression spring, and the elastic component is worn to establish by the wire, and the elastic component butt is between the diapire of mounting groove and first electrode, and the elastic component can apply elasticity for first electrode and second electrode keep contact. In the working process of the starter, the first electrode rotates along with the rotating shaft, and the second electrode is fixed on the end cover and does not move.

Therefore, after the starter is assembled, the elastic piece is in a compressed state, on one hand, a thrust force can be applied to the temperature sensor along the axial direction of the rotating shaft, the stable position of the temperature sensor along the axial direction of the rotating shaft is ensured, on the other hand, a thrust force can be applied to the first electrode, and the first electrode is abutted against the second electrode fixed on the end cover.

A second aspect of the invention proposes a vehicle comprising a starter designed as described above; the engine is connected with the starter; and the controller is electrically connected with the temperature detection device and can control the start and stop of the starter according to the detection result of the temperature detection device.

The vehicle provided by the invention comprises the starter designed as above. Therefore, all the advantages of the starter are achieved, and the advantages are not discussed in any detail here.

In addition, the vehicle includes an engine and a controller. The engine is connected with the starter and can work under the drive of the driving machine. The controller is electrically connected to the temperature detection device. After receiving the detection result of the temperature detection device, the controller can control the motor of the starter to be started or closed according to the detection result of the temperature detection device.

Specifically, when the temperature of the rotating shaft is detected to be greater than or equal to the first temperature threshold, it indicates that the temperature inside the starter is high at this time, and the motor is at risk of being damaged. At this time, the controller controls the motor to stop operating and prohibits the motor from starting. Therefore, the condition that the motor is damaged can be avoided, and the service lives of the motor and the starter are ensured. When the temperature of the rotating shaft is detected to be lower than the first temperature threshold value, the temperature inside the starter is proper at the moment, and the motor is not damaged. At this time, the controller controls the motor to operate and allows the motor to start.

In some possible designs, the vehicle further comprises: the rotating speed detection device is electrically connected with the controller and is used for detecting the rotating speed of the engine; the load detection device is electrically connected with the controller and is used for detecting the load of the engine; the relay is electrically connected with the motor and the controller, the relay is electrified to start the motor, and the relay is electrified to shut down the motor; the storage battery is electrically connected to the controller; the controller is also used for controlling the starting and stopping of the starter according to the detection result of the rotating speed detection device, the detection result of the load detection device, the state of the relay and the state of the storage battery.

In this design, the vehicle further includes a rotation speed detection device, a load detection device, a relay, and a battery. The rotating speed detection device is used for detecting the rotating speed of the engine; the load detection device is used for detecting the load of the engine; the storage battery is used for supplying power to the motor; the relay can control the start and stop of the starter in a power-on and power-off mode.

In the using process, when the rotating speed detection device detects that the rotating speed of the engine is zero and the load of the engine is also zero, whether the starter is started is further judged according to the temperature of the rotating shaft of the motor. If one of the engine speed and the engine load is not zero, the starter is prohibited from being started.

Specifically, under the condition that a control loop where the relay is located is intact and the starting voltage of the engine is greater than or equal to the voltage threshold, if the rotating speed of the engine is zero, the load of the engine is zero and the temperature of the rotating shaft is less than or equal to the second temperature threshold, the starter can be controlled to start. Wherein, the control circuit that relay is located is intact to mean: the control loop where the relay is located has no short circuit or open circuit, and can ensure the transmission of control signals.

In addition, the controller may be used to control the relay to be energized and de-energized. In addition, the relay is connected with the motor and a driving power supply of the motor and can be used for controlling the power on and power off of the motor so as to control the starter to drive and stop. Therefore, after the controller obtains the detection result of the temperature detection device, the relay can be controlled to be powered on and powered off according to the detection result of the temperature detection device, and then the starting and stopping of the starter are controlled.

In addition, the controller is also directly connected with the starter. Therefore, when the relay is in fault, the controller can directly control the starter to start and stop.

A third aspect of the present invention provides a control method of a vehicle, which is applicable to the starter designed as described above, the control method including: acquiring a first operation parameter of a vehicle when a starter operates, and judging that the first operation parameter meets a first stop condition; and controlling the starter to stop working based on the first operation parameter meeting the first stop condition.

The control method of the vehicle provided by the invention can be used for the vehicle with any design as described above. Specifically, the control method of the vehicle provided by the invention can acquire the first operation parameter of the vehicle when the starter operates, and judge whether the first operation parameter meets the first stop condition. If the first operating parameter meets the first shutdown condition, it indicates that the motor and the starter are at risk of damage. At this time, the starter is controlled to stop working, and the motor is prohibited from starting. Therefore, the reliability of the motor and the whole starter can be improved to a great extent, and the service lives of the motor and the whole starter are prolonged.

Specifically, a cooling fan is not arranged inside the starter, so that in the starting process of the starter, especially in the frequent starting process of the starter, a large amount of heat can be generated when current passes through a rotor and a stator of the motor, the insulation damage of the rotor and the stator of the motor can be caused, the service life of the starter is influenced if the current is light, and the current is burnt out on site if the current is heavy.

Therefore, the starter can be judged whether to have the risk of damage according to the first operation parameter in the operation process of the starter, the starter is controlled to stop working in time under the condition that the starter has the risk of damage, and the motor is prohibited from starting.

In some possible designs, the first operating parameter includes: a first temperature of the shaft; the first shutdown condition includes: the first temperature is greater than or equal to a first temperature threshold.

In this design, the first operating parameter includes a first temperature of the shaft during operation of the starter, and the first shutdown condition includes the first temperature of the shaft during operation of the starter being greater than or equal to a first temperature threshold. That is, in the process of operating the starter, if the first temperature of the rotating shaft is detected to be greater than or equal to the first temperature threshold value, it is determined that the first stop condition is met, which means that the motor is at risk of being damaged. Therefore, the starter is controlled to stop working at the moment, and the motor is prohibited from starting.

Specifically, the first temperature threshold may be selected according to a type of the starter, and generally should be a safe temperature of the rotating shaft during operation of the starter, as will be understood by those skilled in the art.

In some possible designs, the first operating parameter includes: a first rotational speed of the engine; the first shutdown condition includes: the first rotational speed is greater than or equal to a first rotational speed threshold.

In this design, the first operating parameter includes a first speed of the engine during starter operation, and the first shutdown condition includes the first speed of the engine during starter operation being greater than or equal to a first speed threshold. That is, during the operation of the motor, if it is detected that the first rotation speed of the engine is greater than or equal to the first rotation speed threshold, it is determined that the first stop condition is satisfied at this time, which means that there is a risk of damage to the motor at this time. Therefore, the starter is controlled to stop working at the moment, and the motor is prohibited from starting.

In particular, the first speed threshold may be selected according to the type of the engine, and generally should be a safe speed during the operation of the engine, as will be understood by those skilled in the art.

In some possible designs, the first operating parameter includes: after the starter operates for a set time, the second rotating speed of the engine is achieved; the first shutdown condition includes: the second rotational speed is less than a second rotational speed threshold, which is less than the first rotational speed threshold.

In the design, the first operating parameter includes a second rotation speed of the engine after the starter operates for a set period of time, and the first stop condition includes that the second rotation speed of the engine after the starter operates for the set period of time is less than a second rotation speed threshold. That is, in the process of operating the starter, if it is detected that the second rotation speed of the engine is smaller than the second rotation speed threshold after the starter is operated for the set time period, it is determined that the first stop condition is met, which means that the motor is at risk of being damaged. Therefore, the starter is controlled to stop working at the moment, and the motor is prohibited from starting.

Specifically, the first rotation speed threshold is an ignition rotation speed, and the second rotation speed threshold may be selected according to actual conditions, for example, the second rotation speed threshold may be selected to be 10 rmp.

In some possible designs, the control method of the vehicle further includes: acquiring a second operation parameter of the vehicle when the starter is stopped, and judging that the second operation parameter meets a starting condition; controlling the starter to start working based on the second operation parameter meeting the starting condition; wherein the second operating parameter comprises: the load of the engine, the third rotating speed of the engine and the second temperature of the rotating shaft; the starting conditions comprise: the load is zero, the third rotating speed is zero, and the second temperature is less than or equal to a second temperature threshold value; the second temperature threshold is less than the first temperature threshold.

In the design, when the starter is in a stop state, a second operation parameter of the vehicle when the starter stops is obtained, and whether the second operation parameter meets a starting condition or not is judged. If the second operation parameter meets the starting condition, controlling a starter to start working; and if the second operation parameter is not in accordance with the starting condition, controlling the starter to stop working and forbidding the motor to start.

In this design, when the motor is in the stopped state, the load of the engine, the third rotation speed of the engine, and the second temperature of the rotating shaft at the time of stopping the starter are acquired. And then, judging whether the load of the engine is zero, judging whether the third rotating speed of the engine is zero, and judging whether the second temperature of the rotating shaft is less than or equal to a second temperature threshold value. If the load of the engine, the third rotating speed of the engine and the second temperature of the rotating shaft all meet the conditions, judging that the second operating parameter meets the starting condition; at this time, the engine is controlled to be started. If any one of the conditions is not met, judging that the second operation parameter does not meet the starting-up condition; at this time, the engine is controlled to stop operating, and the motor is prohibited from turning on.

In addition, the second temperature threshold is ensured to be smaller than the first temperature threshold, and the difference value between the first temperature threshold and the second temperature threshold is ensured to be larger than the temperature rise value of the rotating shaft in the starting time period of the starter.

In some possible designs, the second operating parameter further includes: starting voltage of a starter and control conditions of a control loop where a relay of a vehicle is located; the boot conditions further include: the starting voltage is greater than or equal to the voltage threshold value, and the control loop meets the control condition.

In the design, before acquiring the second operation parameter of the vehicle when the starter is stopped, whether the starting voltage of the starter and a control loop where the relay is located are normal needs to be judged. Specifically, it is determined whether the starting voltage of the starter is greater than or equal to a voltage threshold. If the starting voltage is greater than or equal to the voltage threshold, the starting voltage meets the starting condition; and if the starting voltage is smaller than the voltage threshold, the starting voltage does not meet the starting condition. Specifically, whether a control loop where the relay is located meets a control condition is judged; if the control loop is not short-circuited or open-circuited, the control loop is normal, and the control loop meets the control condition; if the control loop has short circuit and open circuit, the control loop is abnormal, and the control loop does not meet the control condition.

A fourth aspect of the present invention provides a control device of a vehicle, which is usable with the vehicle as designed above, the control device comprising: the system comprises an acquisition unit, a judgment unit and a control unit, wherein the acquisition unit is used for acquiring a first operation parameter of a vehicle when a starter is started and judging that the first operation parameter meets a first stop condition; and the control unit is used for controlling the starter to stop working when the first operation parameter meets the first stop condition.

The control device for a vehicle according to the present invention can be used for any of the above-described vehicles. Specifically, the control device of a vehicle includes an acquisition unit and a control unit. The obtaining unit can obtain a first operation parameter in the operation process of the starter and judge whether the first operation parameter meets a first stop condition. If the first operating parameter meets the first shutdown condition, it indicates that the motor and the starter are at risk of damage. At this time, the control unit controls the starter to stop operating, and prohibits the motor from starting. Therefore, the reliability of the motor and the whole starter can be improved to a great extent, and the service lives of the motor and the whole starter are prolonged.

Specifically, a cooling fan is not arranged inside the starter, so that in the starting process of the starter, especially in the frequent starting process of the starter, a large amount of heat can be generated when current passes through a rotor and a stator of the motor, the insulation damage of the rotor and the stator of the motor can be caused, the service life of the starter is influenced if the current is light, and the current is burnt out on site if the current is heavy.

Therefore, the starter can be judged whether to have the risk of damage according to the first operation parameter in the operation process of the starter, the starter is controlled to stop working in time under the condition that the starter has the risk of damage, and the motor is prohibited from starting.

A fifth aspect of the present invention proposes a readable storage medium having stored thereon a program which, when executed by a processor, implements the steps of the control method of the vehicle as designed above.

The present invention provides a readable storage medium storing a program which, when executed, implements the steps of the control method for a vehicle as designed above. Therefore, all the advantageous effects of the control method for a vehicle designed as described above will not be discussed herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a starter according to an embodiment of the present invention;

fig. 2 is an enlarged view of a starter motor of the embodiment shown in fig. 1 at a;

FIG. 3 is a schematic electrical circuit diagram of a vehicle according to one embodiment of the present invention;

FIG. 4 is a flowchart of a control method of a vehicle according to one embodiment of the invention;

fig. 5 is a block diagram of a control apparatus of a vehicle according to an embodiment of the invention;

fig. 6 is a flowchart of a control method of a vehicle according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

100 starter, 102 motor, 104 rotor, 106 rotating shaft, 108 output mechanism, 110 temperature sensor, 112 conducting component, 114 conducting wire, 116 insulating rod, 118 first electrode, 120 second electrode, 122 insulating part, 124 mounting groove, 126 elastic part, 128 relay, 130 rotating speed detecting device, 132 fuse, 134 end cover, 136 temperature detecting device, 138 controller power-on switch, 140 controller starting switch, 142 controller and 144 storage battery.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

The starter 100, the vehicle, and the control method of the vehicle provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

As shown in fig. 1, 2 and 3, a starter 100 according to a first embodiment of the present invention includes a motor 102 and a temperature detection device 136.

The motor 102 includes a stator and a rotor 104, and the output mechanism 108 is connected to the rotor 104 of the motor 102. During operation of starter 100, rotor 104 rotates output 108, which in turn causes motor 102 to output torque via output 108. In particular, there is generally no cooling fan inside the starter 100, so that during the starting process of the starter 100, especially during the frequent starting process of the starter 100, a large amount of heat will be generated when current passes through the rotor 104 and the stator of the motor 102, which may cause the insulation damage of the rotor 104 and the stator of the motor 102, and may affect the service life of the starter 100, and may burn out in the field.

Therefore, as shown in fig. 1, 2 and 3, in the present embodiment, a temperature detection device 136 is provided inside the rotating shaft 106 of the rotor 104, and the temperature of the rotating shaft 106 is detected by the temperature detection device 136. During use, the temperature sensing device 136 is electrically coupled to the controller 142 and can send sensed data to the controller 142. The controller 142 may control the motor 102 of the starter 100 to be turned on or off according to the detection result of the temperature detection device 136 after receiving the detection result of the temperature detection device 136. Thus, the reliability of the motor 102 and the whole starter 100 can be greatly improved, and the service life of the motor 102 and the whole starter 100 can be prolonged.

Specifically, when the temperature of the rotating shaft 106 is detected to be greater than or equal to the first temperature threshold, which indicates that the temperature inside the starter 100 is high at this time, the motor 102 is at risk of being damaged. At this time, the controller 142 controls the starter 100 to stop operating, and prohibits the motor 102 from starting. Thus, the damage of the motor 102 can be avoided, and the service life of the motor 102 and the starter can be ensured. When the temperature of the rotating shaft 106 is detected to be lower than the first temperature threshold value, which indicates that the temperature inside the starter 100 is appropriate at this time, the motor 102 does not risk being damaged. At this time, the controller 142 controls the starter 100 to operate, and allows the motor 102 to start.

Specifically, the controller 142 may be a vehicle controller, and may be a controller of an engine, such as an engine ECU.

In addition, as shown in fig. 1 and 2, the present embodiment arranges the temperature detection device 136 inside the rotating shaft 106 so that the temperature detection device 136 can directly detect the temperature of the rotating shaft 106. While the temperature rise of the rotating shaft 106 is directly caused by the current. Thus, the temperature detected by the temperature detecting device 136 in the present invention is closer to the actual temperature of the motor 102, so that the temperature detection data is more accurate. Particularly, compared with a method for detecting the temperature of the carbon brush of the motor in the related art, the influence of heat generated by friction can be effectively avoided, and the control accuracy of starting and stopping of the starter 100 is improved.

A second embodiment of the present invention provides a starter 100, and on the basis of the first embodiment, further:

as shown in fig. 1 and 2, the interior of the rotation shaft 106 is hollow, and one end of the rotation shaft 106 is provided with an opening. That is, in the present invention, the rotating shaft 106 is provided with a hollow structure with one open end, and the rotating shaft 106 is a one-way hollow shaft as a whole. In addition, the hollow structure provides a mounting position for the temperature detection device 136, so that the temperature detection device 136 can extend into the rotating shaft 106 from the opening, and embedded mounting of the temperature detection device 136 is realized. In addition, the opening ensures the transmission of signals, so that at least one part of the temperature detection device 136 is positioned outside the rotating shaft 106, the temperature detection device 136 can be electrically connected with the controller 142, and the transmission of detection data is ensured.

A third embodiment of the present invention provides a starter 100, and on the basis of the first embodiment, further:

as shown in fig. 2, the temperature sensing device 136 includes the temperature sensor 110 and the conductive member 112. Wherein, temperature sensor 110 sets up in the inside of pivot 106 to laminate mutually with pivot 106, temperature sensor 110 can directly detect the temperature of pivot 106, and avoid causing the testing result inaccurate because of factors such as friction. At least a portion of the conductive member 112 is disposed inside the shaft 106 and the temperature sensor 110 is electrically connected. In addition, the signal line is disposed outside the rotation shaft 106 and electrically connected to the conductive member 112 and the controller 142.

In this way, when the starter 100 is in use, after the temperature sensor 110 detects the temperature of the rotating shaft 106, the detection result of the temperature sensor 110 is sent to the controller 142 through the conducting assembly 112 and the signal line, so that the controller 142 controls the start and stop of the starter 100 according to the detection result of the temperature sensor 110.

Further in this embodiment, as shown in fig. 2, the conductive assembly 112 includes an insulating rod 116, a first electrode 118, a second electrode 120, and an insulator 122. Wherein, one end of the insulation rod 116 is provided with the temperature sensor 110, so as to ensure the stable installation of the temperature sensor 110 inside the rotating shaft 106. The insulating rod 116 is provided with a wire 114 inside, and one end of the wire 114 is electrically connected to the temperature sensor 110.

The first electrode 118 is disposed at the other end of the insulating rod 116 and located at the opening of the rotation shaft 106, and the first electrode 118 is electrically connected to the other end of the conductive wire 114. The second electrode 120 is disposed on the end cap 134 of the motor 102, the second electrode 120 is electrically connected to the first electrode 118 and one end of a signal line of the starter 100, and the other end of the signal line is electrically connected to the controller 142. In addition, an insulator 122 is disposed between the second electrode 120 and the end cap 134 of the motor 102 to ensure insulation between the second electrode 120 and the end cap 134.

Thus, when the starter 100 is in use, after the temperature sensor 110 detects the temperature of the rotating shaft 106, the detection result of the temperature sensor 110 is sent to the controller 142 through the conducting wire 114, the first electrode 118, the second electrode 120 and the signal wire, so that the controller 142 controls the start and stop of the motor 102 according to the detection result of the temperature sensor 110.

In this embodiment, further, as shown in fig. 2, an end of the insulating rod 116 facing the first electrode 118 is provided with a mounting groove 124, and at least a portion of the first electrode 118 is disposed in the mounting groove 124, so as to reduce the overall structural size of the starter.

Further, the starter 100 further includes an elastic member 126. The elastic member 126 is disposed in the mounting groove 124, and one end of the elastic member 126 abuts against a bottom wall of the mounting groove 124, the other end of the elastic member 126 abuts against the first electrode 118, and the first electrode 118 abuts against the second electrode 120. Specifically, the first electrode 118 is a rotating electrode, the second electrode 120 is a fixed electrode, relative rotation exists between the first electrode 118 and the second electrode 120, the elastic member 126 may be a compression spring, the conductive wire 114 penetrates through the elastic member 126, the elastic member 126 abuts between the bottom wall of the mounting groove 124 and the first electrode 118, and the elastic member 126 may apply an elastic force to the first electrode 118, so that the first electrode 118 and the second electrode 120 are kept in contact. During operation of starter 100, first electrode 118 rotates with shaft 106, and second electrode 120 is fixed to end cap 134.

As shown in fig. 2, after the starter 100 is assembled, the elastic member 126 is in a compressed state, on one hand, a thrust force can be applied to the temperature sensor 110 along the axial direction of the rotating shaft 106 to ensure a stable position of the temperature sensor 110 along the axial direction of the rotating shaft 106, and on the other hand, a thrust force can be applied to the first electrode 118, so that the first electrode 118 abuts against the second electrode 120 fixed on the end cover 134.

A fourth embodiment of the present invention proposes a vehicle (not shown in the drawings) including the starter 100 according to any one of the embodiments described above. Therefore, all the advantages of the starter 100 are provided, and are not discussed one by one.

In addition, the vehicle includes an engine and controller 142. The engine is connected to the starter 100 and can be driven by a driving machine. The controller 142 is electrically connected to the temperature detection device 136. The controller 142 may control the motor 102 of the starter 100 to be turned on or off according to the detection result of the temperature detection device 136 after receiving the detection result of the temperature detection device 136.

Specifically, when the temperature of the rotating shaft 106 is detected to be greater than or equal to the first temperature threshold, which indicates that the temperature inside the starter 100 is high at this time, the motor 102 is at risk of being damaged. At this time, the controller 142 controls the motor 102 to stop operating, and prohibits the motor 102 from starting. In this way, damage to the motor 102 can be avoided, so as to ensure the service life of the motor 102 and the starter 100. When the temperature of the rotating shaft 106 is detected to be lower than the first temperature threshold value, which indicates that the temperature inside the starter 100 is appropriate at this time, the motor 102 does not risk being damaged. At this time, the controller 142 controls the motor 102 to operate, and allows the motor 102 to start.

In an embodiment, an output mechanism 108 is disposed at an output end of the motor 102 of the starter 100, and the engine is connected to the output mechanism 108.

In an exemplary embodiment, the controller 142 may be a vehicle controller, and may be a controller of an engine.

A fifth embodiment of the present invention provides a vehicle, further comprising, in addition to the fourth embodiment:

the vehicle further includes a rotational speed detection device 130, a load detection device, a relay, and a battery. The rotation speed detection device 130 is used for detecting the rotation speed of the engine; the load detection device is used for detecting the load of the engine; the storage battery is used for supplying power to the motor; the relay can control the start and stop of the starter in a power-on and power-off mode.

During use, the controller 142 is also electrically connected to the rotation speed detecting device 130 and the load detecting device, and can control the start and stop of the starter 100 according to the detection result of the rotation speed detecting device 130 and the start and stop of the starter 100 according to the detection result of the load detecting device.

Specifically, when the rotation speed detecting device 130 detects that the rotation speed of the engine is zero and the load of the engine is also zero, it is further determined whether to start the starter 100 according to the temperature of the rotating shaft 106 of the motor 102. If one of the engine speed and the engine load is not zero, the starter 100 is prohibited from being started.

Specifically, under the condition that the control loop where the relay 128 is located is intact and the starting voltage of the engine is greater than or equal to the voltage threshold, the starter 100 may be controlled to start if the rotation speed of the engine is zero, the load of the engine is zero, and the temperature of the rotating shaft is less than or equal to the second temperature threshold.

Further, as shown in FIG. 3, the controller 142 may be used to control the relay 128 to power on and off. In addition, the relay 128 is connected to the starter 100 and the battery 144, and can be used to control the power on and power off of the motor 102 of the starter 100, and further control the driving and stopping of the starter 100. Therefore, after the controller 142 acquires the detection result of the temperature detection device 136, the relay 128 can be controlled to be powered on and powered off according to the detection result of the temperature detection device 136, and the start and stop of the starter 100 can be controlled.

Further, as shown in fig. 3, the controller 142 is also directly connected to the starter 100. In this way, controller 142 may directly control start and stop of starter 100 in the event of a failure of relay 128.

In the embodiment, as shown in fig. 3, the battery 144 is electrically connected to the controller 142, the fuse 132 is disposed on the power supply line between the battery 144 and the controller 142, and the controller power-on switch 138 and the controller start switch 140 are disposed in parallel on the communication line between the battery 144 and the controller 142.

In a specific embodiment, as shown in fig. 3, a controller power-on switch 138 and a controller start switch 140 are provided in parallel on a communication line between the battery 144 and the controller 142. The controller start switch 140 may control the controller 142 to start, and the controller power-up switch 138 may control the controller 142 to be powered on.

A sixth embodiment of the invention proposes a control method of a vehicle, which is applicable to the starter of any of the embodiments described above. As shown in fig. 4, the control method of the vehicle includes:

202, acquiring a first operation parameter of a vehicle when a starter operates, and judging that the first operation parameter meets a first stop condition;

and step 204, controlling the starter to stop working based on the first operation parameter meeting the first stop condition.

According to the control method of the vehicle, the first operation parameter in the operation process of the starter can be obtained, and whether the first operation parameter meets the first stop condition or not is judged. If the first operating parameter meets the first shutdown condition, it indicates that the motor and the starter are at risk of damage. At this time, the starter is controlled to stop working, and the motor is prohibited from starting. Therefore, the reliability of the motor and the whole starter can be improved to a great extent, and the service lives of the motor and the whole starter are prolonged.

Specifically, a cooling fan is not arranged inside the starter, so that in the starting process of the starter, especially in the frequent starting process of the starter, a large amount of heat can be generated when current passes through a rotor and a stator of the motor, the insulation damage of the rotor and the stator of the motor can be caused, the service life of the starter is influenced if the current is light, and the current is burnt out on site if the current is heavy.

Therefore, according to the embodiment, whether the starter has a risk of damage or not can be judged according to the first operation parameter in the operation process of the starter, the starter is controlled to stop working in time under the condition that the starter has the risk of damage, and the motor is prohibited from starting.

A seventh embodiment of the present invention provides a control method of a vehicle, further comprising, on the basis of the sixth embodiment:

the first operation parameter comprises a first temperature of the rotating shaft in the operation process of the starter, and the first stop condition comprises that the first temperature of the rotating shaft in the operation process of the starter is larger than or equal to a first temperature threshold value.

Therefore, in the process of running the motor, if the first temperature of the rotating shaft is detected to be greater than or equal to the first temperature threshold value, the first stop condition is judged to be met at the moment, and the risk of damage to the starter exists at the moment. Therefore, the starter is controlled to stop working at the moment, and the motor is prohibited from starting.

Specifically, the first temperature threshold may be selected according to a type of the starter, and generally should be a safe temperature of the rotating shaft during operation of the starter, as will be understood by those skilled in the art.

An eighth embodiment of the present invention provides a control method of a vehicle, further comprising, on the basis of the sixth embodiment:

the first operating parameter includes a first rotational speed of the engine during starter operation, and the first shutdown condition includes the first rotational speed of the engine being greater than or equal to a first rotational speed threshold during starter operation.

Therefore, during the operation of the starter, if the first rotating speed of the engine is detected to be greater than or equal to the first rotating speed threshold value, the first stop condition is judged to be met at the moment, and the risk of damage to the starter exists at the moment. Therefore, the starter is controlled to stop working at the moment, and the motor is prohibited from starting.

In particular, the first speed threshold may be selected according to the type of engine, and generally should be a safe speed for the starter to run, as will be understood by those skilled in the art.

A ninth embodiment of the present invention provides a control method of a vehicle, further comprising, on the basis of the sixth embodiment:

the first operation parameter comprises a second rotating speed of the engine after the starter operates for a set time, the first stop condition comprises that the second rotating speed of the engine after the starter operates for the set time is smaller than a second rotating speed threshold, and the second rotating speed threshold is smaller than the first rotating speed threshold.

Therefore, in the process of running the starter, if the second rotating speed of the engine is detected to be smaller than the second rotating speed threshold after the starter runs for the set time, it is judged that the first stop condition is met at the moment, which means that the risk of damage to the starter exists at the moment. At the moment, the starter is controlled to stop working, and the motor is prohibited from starting.

Specifically, the first rotation speed threshold is an ignition rotation speed, and the second rotation speed threshold may be selected according to actual conditions, for example, the second rotation speed threshold may be selected to be 10 rmp.

A tenth embodiment of the present invention provides a control method of a vehicle, further comprising, on the basis of the sixth embodiment:

the controller is connected with the motor through a relay and is also directly connected with the motor. Therefore, when the first operation parameter meets the first stop condition, the risk of damage of the starter is indicated; at the moment, the starter is controlled to stop working by controlling the relay to lose power.

In particular, if the relay has faults such as sticking, the starter can still continue to work. Therefore, under the condition that the first operation parameter meets the first stop condition but the starter does not stop working, when the faults such as adhesion and the like exist in the relay, the starter cannot be controlled to stop working by controlling the relay to lose power at the moment. Therefore, the starter can be directly controlled to stop working by directly passing over the relay.

An eleventh embodiment of the present invention proposes a control method of a vehicle, further comprising, on the basis of the sixth embodiment:

and when the engine is in a stop state, acquiring a second operating parameter of the vehicle when the engine is stopped, and judging whether the second operating parameter meets a starting condition when the engine is stopped. If the second operation parameter meets the starting condition, controlling the engine to start to work; and if the second operation parameter is not satisfied with the starting condition, controlling the engine to stop working and forbidding the motor to start.

In this embodiment, further, when the motor is in the stop state, the load of the engine, the third rotation speed of the engine, and the second temperature of the rotating shaft at the time of the stop of the starter are acquired. And then, judging whether the load of the engine is zero, judging whether the third rotating speed of the engine is zero, and judging whether the second temperature of the rotating shaft is less than or equal to a second temperature threshold value.

If the load of the engine, the third rotating speed of the engine and the second temperature of the rotating shaft all meet the conditions, judging that the second operating parameter meets the starting condition; at the moment, the starter is controlled to be started. If any one of the conditions is not met, judging that the second operation parameter does not meet the starting-up condition; at this time, the starter is controlled to stop working, and the motor is prohibited from starting.

In this embodiment, further, before acquiring the second operating parameter of the vehicle when the starter is stopped, it is necessary to determine whether the starting voltage of the starter and the control loop in which the relay is located are normal.

Specifically, it is determined whether the starting voltage of the starter is greater than or equal to a voltage threshold. If the starting voltage is greater than or equal to the voltage threshold, the starting voltage meets the starting condition; and if the starting voltage is smaller than the voltage threshold, the starting voltage does not meet the starting condition. This determination may be performed by the controller and will not be discussed herein, as will be appreciated by those skilled in the art.

Specifically, whether a control loop where the relay is located meets a control condition is judged; if the control loop is not short-circuited or open-circuited, the control loop is normal, and the control loop meets the control condition; if the control loop has short circuit and open circuit, the control loop is abnormal, and the control loop does not meet the control condition. This determination may be performed by the controller and will not be discussed herein, as will be appreciated by those skilled in the art.

As shown in fig. 5, a twelfth embodiment of the present invention provides a control device 300 for a vehicle, which can be used in the vehicle according to any of the above embodiments.

The control device 300 of the vehicle according to the present embodiment includes an acquisition unit 302 and a control unit 304. The obtaining unit 302 may obtain a first operating parameter of the vehicle when the starter is running, and determine whether the first operating parameter meets a first stop condition. If the first operating parameter meets the first shutdown condition, it indicates that the motor and the starter are at risk of damage. At this time, the control unit 304 controls the starter to stop operating, and prohibits the motor from starting. Therefore, the reliability of the motor and the whole starter can be improved to a great extent, and the service lives of the motor and the whole starter are prolonged.

Specifically, a cooling fan is not arranged inside the starter, so that in the starting process of the starter, especially in the frequent starting process of the starter, a large amount of heat can be generated when current passes through a rotor and a stator of the motor, the insulation damage of the rotor and the stator of the motor can be caused, the service life of the starter is influenced if the current is light, and the current is burnt out on site if the current is heavy.

Therefore, according to the embodiment, whether the starter has a risk of damage or not can be judged according to the first operation parameter in the operation process of the starter, the starter is controlled to stop working in time under the condition that the starter has the risk of damage, and the motor is prohibited from starting.

A thirteenth embodiment of the present invention provides a control device 300 for a vehicle, further including, in addition to the twelfth embodiment:

the first operation parameter comprises a first temperature of the rotating shaft in the operation process of the starter, and the first stop condition comprises that the first temperature of the rotating shaft in the operation process of the starter is larger than or equal to a first temperature threshold value. That is, during the operation of the starter, if the obtaining unit 302 detects that the first temperature of the rotating shaft is greater than or equal to the first temperature threshold, it is determined that the first stop condition is satisfied at this time, which means that the motor is at risk of being damaged at this time.

Therefore, at this time, the control unit 304 controls the starter to stop operating, and prohibits the motor from starting. Specifically, the first temperature threshold may be selected according to the type of the starter, and generally should be a safe temperature of the rotating shaft during the operation of the motor, as will be understood by those skilled in the art.

A fourteenth embodiment of the present invention provides a control device 300 for a vehicle, further including, in addition to the twelfth embodiment:

the first operating parameter includes a first rotational speed of the engine during starter operation, and the first shutdown condition includes the first rotational speed of the engine being greater than or equal to a first rotational speed threshold during starter operation.

During the operation of the starter, if the obtaining unit 302 detects that the first rotation speed of the engine is greater than or equal to the first rotation speed threshold, it is determined that the first stop condition is satisfied at this time, which means that the motor is at risk of being damaged at this time. Therefore, at this time, the control unit 304 controls the starter to stop operating, and prohibits the motor from starting.

In particular, the first speed threshold may be selected according to the type of the engine, and generally should be a safe speed during the operation of the electric machine, as will be understood by those skilled in the art.

A fifteenth embodiment of the present invention provides a control device 300 for a vehicle, further including, in addition to the twelfth embodiment:

the first operation parameter comprises a second rotating speed of the engine after the starter operates for a set time period, and the first stop condition comprises that the second rotating speed of the engine after the starter operates for the set time period is smaller than a second rotating speed threshold value.

In the process of motor operation, if the obtaining unit 302 detects that the second rotation speed of the engine is less than the second rotation speed threshold after the starter operates for the set time period, it is determined that the first stop condition is met at this time, which means that the starter is at risk of being damaged at this time. Therefore, at this time, the control unit 304 controls the starter to stop operating, and prohibits the motor from starting.

Specifically, the first rotation speed threshold is an ignition rotation speed, and the second rotation speed threshold may be selected according to actual conditions, for example, the second rotation speed threshold may be selected to be 10 rmp.

A sixteenth embodiment of the present invention provides a control device 300 for a vehicle, further comprising, in addition to the twelfth embodiment:

the controller is connected with the motor through a relay and is also directly connected with the motor. Therefore, when the first operation parameter meets the first stop condition, the risk of damage of the starter is indicated; at the moment, the starter is controlled to stop working by controlling the relay to lose power.

In particular, if the relay has faults such as sticking, the starter can still continue to work. Therefore, under the condition that the first operation parameter meets the first stop condition but the starter does not stop working, the starter can be directly controlled to stop working by directly passing over the relay.

A seventeenth embodiment of the present invention provides a control device 300 for a vehicle, further comprising, in addition to the sixteenth embodiment:

when the motor is in the shutdown state, the obtaining unit 302 obtains a second operating parameter of the vehicle when the starter is shutdown, and determines whether the second operating parameter when the starter is shutdown satisfies a startup condition. If the second operation parameter meets the starting condition, the control unit 304 controls the starter to start; if the second operating parameter does not satisfy the start-up condition, the control unit 304 may control the starter to stop operating and prohibit the motor from being turned on.

In this embodiment, further, when the starter is in the stop state, the obtaining unit 302 obtains the load of the engine, the third rotation speed of the engine, and the second temperature of the rotating shaft at the time of stop of the starter. Then, the obtaining unit 302 determines whether the load of the engine is zero, determines whether the third rotation speed of the engine is zero, and determines whether the second temperature of the rotating shaft is less than or equal to a second temperature threshold.

If the load of the engine, the third rotating speed of the engine and the second temperature of the rotating shaft all meet the conditions, judging that the second operating parameter meets the starting condition; at this time, the control unit 304 may control the motor to be turned on.

If any one of the conditions is not met, judging that the second operation parameter does not meet the starting-up condition; at this time, the control unit 304 controls the starter to stop operating, and prohibits the motor from turning on.

In the embodiment, further, before acquiring the second operation parameter of the vehicle when the starter is stopped, it is necessary to determine whether the starting voltage of the starter and the control circuit in which the relay is located are normal.

Specifically, it is determined whether the starting voltage of the starter is greater than or equal to a voltage threshold. If the starting voltage is greater than or equal to the voltage threshold, the starting voltage meets the starting condition; and if the starting voltage is smaller than the voltage threshold, the starting voltage does not meet the starting condition.

Specifically, whether a control loop where the relay is located meets a control condition is judged; if the control loop is not short-circuited or open-circuited, the control loop is normal, and the control loop meets the control condition; if the control loop has short circuit and open circuit, the control loop is abnormal, and the control loop does not meet the control condition.

An eighteenth embodiment of the present invention proposes a readable storage medium having stored thereon a program that, when executed by a processor, implements the steps of the control method of the vehicle according to any one of the above-described embodiments.

The present embodiment proposes a readable storage medium storing a program that, when executed, realizes the steps of the control method for a vehicle designed as described above. Therefore, all the advantageous effects of the control method of the vehicle having any one of the above embodiments are not discussed herein.

In the related technology, the electric starter has compact structure and large heat productivity during operation, belongs to a short-time working motor, and is widely applied to gasoline and diesel engines. Because the gasoline and diesel engine adopts the piston to compress the fresh air to realize ignition, the diesel engine is greatly influenced by the altitude and the ambient temperature when the cold vehicle is started. The higher the altitude, the lower the ambient temperature, and the more difficult it is to ignite a diesel engine.

At present, motor overheating damage is the fault with the highest incidence rate in all faults of an electric starter, particularly in cold regions with higher altitude, the storage battery of a vehicle parked outside is insufficient due to low temperature, a diesel engine is difficult to start, a user is in a hurry to start the vehicle, the electric starter is continuously electrified to start, therefore, after continuous large current passes through a motor rotor and a stator coil of the starter, a large amount of heat is generated, finally, insulation damage of the motor rotor and the stator coil is caused, the service life of the starter is influenced if the large current is small, and the starter is burnt out on the spot if the large current is large. Therefore, a method for forcibly protecting the starter motor from overheating and enabling repeated use is required, so that the reliability and the service life of the electric starter are ensured.

In the related art, when a temperature sensitive switch at a carbon brush of a motor of a starter is in contact with a high temperature, a coil control circuit of a starting relay is cut off, and the starter stops operating. A temperature sensing switch is added at a carbon brush of a starter motor and is connected in series with a coil control loop of a starting relay, and when the temperature is high, the temperature sensing switch disconnects the coil control loop of the starting relay. However, the temperature at the carbon brush mainly comes from the friction heating of the carbon brush and the slip ring, and the overheating of the motor is mainly caused by the heat generated when the rotor coil is electrified with large current, so the arrangement cannot play a role in protecting the motor. And the temperature sensing switch is connected in series with a coil control loop of the starting relay, and when the temperature sensing switch is disconnected, the controller can send out an open-circuit alarm of the starting relay.

Therefore, as shown in fig. 1, 2 and 3, the present invention provides a starter 100, wherein a temperature detection device 136 is installed in a rotating shaft 106 of a motor 102 of the starter 100, the temperature detection device 136 includes a thermoelectric temperature sensor 110, an insulating rod 116 (plastic insulating rod) with a built-in conducting wire 114, an elastic member 126 (compression spring), a first electrode 118 (graphite electrode) rotating with the rotating shaft 106, and a second electrode 120 (copper electrode) fixed on an end cap 134, and the second electrode 120 has a connection terminal and can be connected to a controller 142 through a signal line.

In operation, as shown in fig. 3, the temperature of the rotating shaft 106 detected by the temperature detecting device 136 is connected to the controller 142, and the controller 142 controls the start and stop of the motor 102 by controlling the power supply of the starter relay 128, thereby controlling the start and stop of the starter 100.

In an embodiment, as shown in fig. 6, a flowchart of a control method of a vehicle according to an embodiment of the present invention is shown, and as shown in fig. 6, the control method of the vehicle includes:

step 402, powering on a controller;

step 404, judging whether the second operation parameter meets the starting-up condition, if so, executing step 408, otherwise, executing step 406;

step 406, prohibiting the starter from starting;

step 408, the controller starts the switch to close;

step 410, allowing the starter to start;

step 412, power is supplied to the relay;

step 414, judging whether the first operation parameter meets the first shutdown condition, if so, executing step 416, otherwise, returning to step 412;

step 416, power to the relay is stopped.

Specifically, in step 404, the second operating parameter is determined to satisfy the boot condition only if all of the following conditions are satisfied:

the first condition is as follows: the rotation speed of the engine is zero;

case two: the load of the engine is zero;

case three: the control loop in which the relay is located satisfies the control condition (there is no short circuit or open circuit defect, and the determination can be performed by the controller 142, as will be understood by those skilled in the art, and will not be discussed herein);

case four: the starting voltage is greater than or equal to the voltage threshold (the starting voltage can ensure that the motor 102 is normally started, and generally the starting voltage is greater than or equal to 22V);

case five: the temperature of the shaft 106 is less than or equal to a second temperature threshold (which may be selected based on the coil material characteristics of the motor 102).

Specifically, in step 414, the first operating parameter is determined to satisfy the first shutdown condition as long as either:

the first condition is as follows: the temperature of the shaft 106 is greater than or equal to a first temperature threshold;

case two: the rotation speed of the engine is greater than or equal to a first rotation speed threshold value (the first rotation speed threshold value is the ignition rotation speed of the engine);

case three: after the starter 100 is operated for a set period of time, the rotation speed of the engine is less than a second rotation speed threshold (the second rotation speed threshold may be designed according to the model of the engine, for example, 10rpm is selected).

Further, with respect to the above-described first temperature threshold value and second temperature threshold value, the following is further explained: the first temperature threshold is greater than the second temperature threshold. The difference between the first temperature threshold and the second temperature threshold needs to be determined according to a temperature rise curve when the starter 100 operates. Typically, the difference between the first temperature threshold and the second temperature threshold is greater than the temperature increase over the starting period of the starter 100. For example, the difference between the first temperature threshold and the second temperature threshold is greater than or equal to the temperature rise of the motor 102 for 2 seconds during the start-up period of the motor (for example, the difference between the first temperature threshold and the second temperature threshold may be a temperature rise of the motor 102 for 5 seconds).

In addition, when the starter 100 fails to be powered off due to a fault such as bonding of contacts of an electromagnetic switch, the invention can control an alarm part of the engine to give an alarm, so as to remind a driver to actively cut off a main power switch as soon as possible, and further damage to the motor 102 is avoided. In addition, the controller 142 may also directly switch the main power switch to avoid further damage to the motor 102.

In summary, the temperature detecting device is disposed in the rotating shaft 106 of the rotor 104 of the starter 100, and when the temperature of the rotor 104 reaches the first temperature threshold set by the controller 142, the controller 142 will cut off the power supply of the starter relay 128, stop the starter 100 from operating, and protect the motor 102 of the starter 100 from being damaged due to overheating. And, whether to stop operating starter 100 is determined using the rotor 104 temperature; the lower the initial temperature of the rotor 104 is, the longer the time for the starter 100 to continuously run once is, and the success rate of low-temperature cold start of the diesel engine can be improved by adopting the method.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.