阅读说明：本技术 一种车用空压机系统的控制装置 (Control device of vehicle air compressor system ) 是由 邬泽强 方优正 刘芳庆 华志峰 于 2020-11-23 设计创作，主要内容包括：本发明涉及制动控制领域,公开了一种车用空压机系统的控制装置,其包括干燥器连接口(1)和空压机卸荷口(2),还包括卸荷阀(3),卸荷阀(3)内设有卸荷腔(30),卸荷腔(30)内安装有活动阀芯(31),卸荷腔(30)与干燥器连接口(1)连通,卸荷阀(3)的一端接口与大气连通,卸荷阀(3)的另一端接口与空压机卸荷口(2)连接；还包括与储气瓶连通的储气瓶连接口(4),还包括排气电磁阀(7)并通过排气电磁阀(7)控制卸荷腔(30)向外界大气卸压。本发明本申请检测及控制模块一体设计,优化了电磁阀的工作环境,保证卸荷装置的可靠性。(The invention relates to the field of brake control, and discloses a control device of a vehicle air compressor system, which comprises a dryer connecting port (1), an air compressor unloading port (2) and an unloading valve (3), wherein an unloading cavity (30) is arranged in the unloading valve (3), a movable valve core (31) is arranged in the unloading cavity (30), the unloading cavity (30) is communicated with the dryer connecting port (1), one end interface of the unloading valve (3) is communicated with the atmosphere, and the other end interface of the unloading valve (3) is connected with the air compressor unloading port (2); the gas storage device also comprises a gas storage bottle connecting port (4) communicated with the gas storage bottle, and an exhaust electromagnetic valve (7) and controls the unloading cavity (30) to release pressure to the external atmosphere through the exhaust electromagnetic valve (7). The detection and control module is integrally designed, so that the working environment of the electromagnetic valve is optimized, and the reliability of the unloading device is ensured.)

1. The utility model provides a controlling means of vehicle air compressor machine system which characterized in that: the dryer comprises a dryer connecting port (1) communicated with a dryer, an air compressor unloading port (2) communicated with the air compressor and an unloading valve (3), wherein an unloading cavity (30) is arranged in the unloading valve (3), a movable valve core (31) is arranged in the unloading cavity (30), the opening and closing of ports at two ends of the unloading valve (3) are controlled through the movement of the movable valve core (31), the unloading cavity (30) is communicated with the dryer connecting port (1) and drives the movable valve core (31) to move through the air pressure of the dryer connecting port (1), one end port of the unloading valve (3) is communicated with the atmosphere, and the other end port of the unloading valve (3) is connected with the air compressor unloading port (2); the air storage bottle pressure relief device is characterized by further comprising an air storage bottle connecting port (4) communicated with an air storage bottle, a controller (5) and an air pressure sensor (6) for monitoring the air pressure inside the air storage bottle, wherein the air pressure sensor (6) is connected with the controller (5) and sends an air pressure signal in the air storage bottle to the controller (5), the air storage bottle pressure relief device further comprises an active exhaust channel communicated with an unloading cavity (30) and the outside atmosphere, an exhaust electromagnetic valve (7) is installed on the active exhaust channel and controls the unloading cavity (30) to relieve pressure of the outside atmosphere through the exhaust electromagnetic valve (7), and the controller (5) is connected with the exhaust electromagnetic valve (7) and controls the work of the exhaust electromagnetic valve (7).

2. The control device of an air compressor system for vehicles according to claim 1, wherein: the controller (5) comprises an active unloading module (51), and the active unloading module (51) is connected with the air pressure sensor (6) and controls the work of the exhaust electromagnetic valve (7).

3. The control device of an air compressor system for vehicles according to claim 1, wherein: the controller (5) further comprises a passive unloading module (52) and a passive exhaust channel communicated with the unloading cavity (30) and the gas storage cylinder connecting port (4), a point-acting exhaust valve (8) is mounted on the passive exhaust channel, and the passive unloading module (52) is connected with the point-acting exhaust valve (8) and controls the gas storage cylinder to be switched on or off to the unloading cavity (30).

4. The control device of an air compressor system for vehicles according to claim 3, wherein: the device also comprises a communication device (9), wherein the communication device (9) receives a passive unloading signal sent by the outside, and the communication device (9) is connected with a passive unloading module (52) in the controller (5).

5. The control device of an air compressor system for vehicles according to claim 4, wherein: the air compressor temperature monitoring system is characterized by further comprising a motor temperature sensor (11) connected with the controller (5), the motor temperature sensor (11) is a thermistor, the motor temperature sensor (11) monitors the temperature of the air compressor and converts the temperature into a temperature signal to be sent to the controller (5), and the controller (5) sends the temperature signal to an operation end or an operator through the communication device (9).

6. The control device of an air compressor system for vehicles according to claim 4, wherein: the automatic oil level control system is characterized by further comprising an engine oil level sensor (12) connected with the controller (5), the engine oil level sensor (12) monitors the engine oil amount of the air compressor and forms an engine oil maintenance signal to be sent to the controller (5), and the controller (5) sends the engine oil maintenance signal to an operation end or an operator through a communication device (9).

7. The control device of an air compressor system for vehicles according to claim 4, wherein: the lubricating device is characterized by further comprising an oil pressure switch (13) connected with the controller (5), the oil pressure switch (13) is installed in a lubricating system in the air compressor, the controller (5) monitors the opening and closing of the oil pressure switch (13) and forms a lubricating fault signal, and the controller (5) sends the lubricating fault signal to an operation end or an operator through the communication device (9).

8. The control device of an air compressor system for vehicles according to claim 4, wherein: the air compressor further comprises a negative pressure sensor (14) connected with the controller (5), the negative pressure sensor (14) is installed at an air inlet of the air compressor and monitors air pressure to form a negative pressure signal, and the controller (5) starts the negative pressure signal to an operation end or an operator through the communication device (9).

9. The control device of an air compressor system for vehicles according to claim 1, wherein: the pipeline of the unloading valve (3) connected with the dryer connecting port (1) is provided with a one-way valve (10), and the one-way valve (10) only allows the gas of the dryer connecting port (1) to flow to the unloading cavity (30).

Technical Field

The invention relates to the field of brake control, in particular to a control device of an air compressor system for a vehicle.

Background

The electric air compressor for the new energy vehicle is a braking air source of a large commercial vehicle, and is a vital item in a whole vehicle braking component. The failure of the electric air compressor for the vehicle can cause the failure of the whole braking system, the failure of the brake and even the serious consequences of vehicle damage and death. At the present stage, the running state of the air compressor is judged by the commercial vehicle with new energy only through the change of the driving current and the air pressure, and the whole vehicle lacks a working information way and an intervention means for acquiring the important component, so that the faults and hidden dangers of load starting of the air compressor, power consumption increase, service life shortening caused by lack of maintenance, motor burnout and the like are easily caused.

The on-load starting is one of the main problems faced by the electric air compressor for the new energy vehicle.

At present, the start-stop control of most of electric air compressors for new energy vehicles on the market is determined according to the air pressure value of an air storage cylinder, and the air pressure value of the unloading and air supply recovering actions of the dryer is determined according to the setting of an internal spring of the dryer. There is a deviation in air pressure between the two, resulting in the following two situations:

when the detected air pressure value of the whole vehicle is higher than the judged air pressure value of the dryer: the vehicle control unit considers that the gas storage cylinder reaches the upper limit of the gas pressure according to the gas pressure value collected by the instrument from the gas storage cylinder, the air compressor is closed, the dryer does not reach the exhaust pressure, pressure relief is not carried out on a pipeline, the next time the air compressor is started under pressure, the risk of abnormal starting is caused, and the driver and the motor are damaged in an overload mode. In addition, the dryer does not normally exhaust, filtering materials in the dryer cannot be regenerated, drying function of the dryer fails, water is accumulated in the gas storage cylinder, and each pipeline and the brake valve body are aged in advance and fail in the past, so that braking safety of the whole vehicle is seriously affected.

When the dryer judges that the air pressure value is higher than the detected air pressure value of the whole vehicle: the dryer judges that the air storage cylinder reaches the upper limit of air pressure, performs the action of air exhaust and unloading, cuts off the connection between the air compressor and the air storage cylinder, and stops the rise of the air pressure. But at the moment, the pressure of the gas storage cylinder detected by the whole air compressor does not reach the set upper limit of air pressure, and the air compressor is not shut down. Thereby causing the air compressor to be still unable to stop although the air supply process is completed. The internal loss of the air compressor is increased, and the energy consumption of the whole vehicle is greatly increased.

In order to ensure that the air compressor is started without load, the existing application scheme is to add an electromagnetic valve between an air outlet of the air compressor and a dryer, before the air compressor is started, the air pressure in a pipeline is exhausted by the electromagnetic valve, and the air compressor is ensured to be started without load. But has the following defects: the problem that the set air pressure of the dryer is inconsistent with the air pressure detected by the whole vehicle is not solved; the electromagnetic valve has worse use condition; the electromagnetic valve is directly installed at the exhaust port of the air compressor, the service temperature is higher than 70 ℃, and the electromagnetic valve is directly contacted with gas which is not purified by a dryer, so that more water and more oil gas directly influence the service life of a rubber part at the sealing port of the electromagnetic valve, the electromagnetic valve becomes a newly-increased high-occurrence fault point, and the quality assurance requirement of the whole vehicle cannot be met.

The maintenance of new forms of energy automobile-used air compressor machine is not directly perceived, and the user only can come to maintain the maintenance to the air compressor machine according to live time or kilometer, and the in-service use operating mode can cause the consumptive material loss condition inconsistent, only decides whether the maintenance according to this condition of time or kilometer, often can lead to the maintenance improper, influences equipment life.

The new energy commercial vehicle on the market only judges the running state of the air compressor through the change of the driving current and the air pressure. The key information can not be obtained when the working temperature of the air compressor and the lubrication system are normal or not. Therefore, only when the air compressor fails, the problem can be found, and the air compressor is not controllable in use risk.

Along with the requirements of intellectualization and Internet of things of the whole vehicle equipment of the new energy passenger vehicle and the logistics vehicle, and the requirements for the safety and the reliability of the air compressor are improved. The existing new energy air compressor can not meet the requirement in the out-of-control mode. After the auxiliary control module of the air compressor is added to the air compressor, the working state of the air compressor can be monitored in real time, the air compressor is communicated with the whole vehicle, accurate and timely maintenance information is provided for users, the service life of the air compressor is greatly prolonged, the failure rate is reduced, and the running safety is guaranteed.

At present, the invention patent application with the patent number 201711005923.6 has the defects of no safe pressure relief, easy loss of parts and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a control device of a vehicle air compressor system.

In order to solve the technical problem, the invention is solved by the following technical scheme:

a control device of an air compressor system for a vehicle comprises a dryer connecting port communicated with a dryer, an air compressor unloading port communicated with the air compressor and an unloading valve, wherein an unloading cavity is arranged in the unloading valve, a movable valve core is arranged in the unloading cavity, the connection and disconnection of interfaces at two ends of the unloading valve are controlled through the movement of the movable valve core, the unloading cavity is communicated with the dryer connecting port and drives the movable valve core to move through the air pressure of the dryer connecting port, one end interface of the unloading valve is communicated with the atmosphere, and the other end interface of the unloading valve is connected with the unloading port of the air compressor; the air pressure sensor is connected with the controller and sends an air pressure signal in the air storage bottle to the controller, the air pressure sensor further comprises an active exhaust channel communicated with the unloading cavity and the outside atmosphere, an exhaust solenoid valve is mounted on the active exhaust channel and controls the unloading cavity to release pressure to the outside atmosphere through the exhaust solenoid valve, and the controller is connected with the exhaust solenoid valve and controls the work of the exhaust solenoid valve.

Preferably, the controller comprises an active unloading module, and the active unloading module is connected with the air pressure sensor and controls the work of the exhaust solenoid valve.

Preferably, the controller further comprises a passive unloading module and a passive exhaust passage communicated with the unloading cavity and the gas storage cylinder connecting port, a point-acting type exhaust valve is mounted on the passive exhaust passage, and the passive unloading module is connected with the point-acting type exhaust valve and controls the gas storage cylinder to be switched on and off to the unloading cavity.

Preferably, the controller further comprises a communication device, the communication device receives a passive unloading signal sent by the outside, and the communication device is connected with the passive unloading module in the controller.

Preferably, the air compressor control system further comprises a motor temperature sensor connected with the controller, the motor temperature sensor is a thermistor, the motor temperature sensor monitors the temperature of the air compressor and converts the temperature into a temperature signal to be sent to the controller, the controller sends the temperature signal to an operation end or an operator through a communication device, when the controller detects that the running temperature of the motor of the air compressor is too high, a motor high-temperature alarm code is sent to the whole vehicle controller through the communication device, the whole vehicle is reminded of reducing the power of the electric air compressor to run, and the use safety of the motor is guaranteed.

Preferably, the air compressor further comprises an engine oil level sensor connected with the controller, the engine oil level sensor monitors the amount of engine oil of the air compressor, an engine oil maintenance signal is formed and sent to the controller, the controller sends the engine oil maintenance signal to an operation end or an operator through a communication device, and when the engine oil in the air compressor is insufficient, the controller sends an engine oil maintenance code to the whole vehicle controller through the communication device to remind the user of adding the engine oil in time.

Preferably, the lubricating device further comprises an oil pressure switch connected with the controller, the oil pressure switch is installed in the internal lubricating system of the air compressor, when the internal lubricating system of the air compressor normally works and normal working oil pressure is established, the inside of the oil pressure switch is closed and conducted, the controller monitors the opening and closing of the oil pressure switch and forms a lubricating fault signal, the controller sends the lubricating fault signal to an operation end or an operator through a communication device, the controller detects the on-off state inside the oil pressure switch in real time, and the working state of the internal lubricating system of the air compressor is monitored in real time. If the air compressor machine is in the operating condition, the internal signal disconnection of oil pressure switch, the controller can send lubricating system fault code through communication device and send vehicle control unit, warns the user and inspects the air compressor machine at once, guarantees the safety of traveling.

Preferably, the air purifier further comprises a negative pressure sensor connected with the controller, the negative pressure sensor is installed at an air inlet of the air compressor and monitors air pressure to form a negative pressure signal, and the controller starts the negative pressure signal to an operation end or an operator through a communication device to remind the operator to clean the air filter or replace the air filter element in time.

Preferably, a one-way valve is mounted on a pipeline connecting the unloading valve and the dryer connecting port, and the one-way valve only allows gas of the dryer connecting port to flow to the unloading cavity.

Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the detection and control module is integrally designed, and the appearance is concise; clean high-pressure gas in the inching type electromagnetic valve gas storage cylinder is used as control gas to drive the mechanical unloading valve, so that the service time of the electromagnetic valve is greatly shortened, the working environment of the electromagnetic valve is optimized, the service life of the electromagnetic valve can be effectively prolonged, and the reliability of the unloading device is ensured; the whole vehicle receives a signal of the auxiliary control device of the air compressor for the vehicle, the air compressor is started and stopped in time, energy consumption is effectively reduced, linkage between the air compressor and the dryer is guaranteed, the problems that the air exhaust of the dryer and the starting and stopping of the air compressor are asynchronous, the air compressor is started with load, the air compressor cannot be closed and the like are solved, and the service life and the reliability of a brake pipeline element of the whole vehicle are improved; the air storage bottle, the dryer and the air compressor are connected through a pipeline and a communication line; the vehicle braking system forms closed-loop control, and the vehicle controller can know the state of the gas supply system and can perform corresponding processing when the gas supply system is abnormal. The safety of the braking of the whole vehicle is effectively improved; the controller intelligently monitors the state of maintenance consumables by detecting the oil level sensor and the air filter negative pressure sensor, so that the maintenance of the air compressor can be accurate and efficient; the controller monitors the state of the air compressor in real time by detecting the oil pressure switch, the motor temperature sensor and the water temperature sensor, can find out the abnormality of the air compressor in time, and greatly improves the running safety of the whole vehicle.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of automatic unloading.

Fig. 3 is a schematic structural view of automatic unloading.

Fig. 4 is a functional block diagram of the controller of fig. 1.

The names of the parts indicated by the numerical references in the drawings are as follows: the device comprises a dryer connecting port 1, an air compressor unloading port 2, an unloading valve 3, an air storage cylinder connecting port 4, a controller 5, an air pressure sensor 6, an exhaust electromagnetic valve 7, a inching exhaust valve 8, a communication device 9, a one-way valve 10, a motor temperature sensor 11, an engine oil level sensor 12, an oil pressure switch 13, a negative pressure sensor 14, an unloading cavity 30, a movable valve 31, an active unloading module 51 and a passive unloading module 52.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A control device of an air compressor system for a vehicle is shown in the figure, and comprises a dryer connecting port 1 communicated with a dryer, an air compressor unloading port 2 communicated with an air compressor, and an unloading valve 3, wherein an unloading cavity 30 is arranged in the unloading valve 3, a movable valve core 31 is arranged in the unloading cavity 30, the connection and disconnection of interfaces at two ends of the unloading valve 3 are controlled through the movement of the movable valve core 31, the unloading cavity 30 is communicated with the dryer connecting port 1 and drives the movable valve core 31 to move through the air pressure of the dryer connecting port 1, one end interface of the unloading valve 3 is communicated with the atmosphere, the other end interface of the unloading valve 3 is connected with the air compressor unloading port 2, when the air pressure of the unloading cavity 30 is overlarge, the air pressure pushes the movable valve core 31 to move and opens the two interfaces of the unloading valve 3 to be communicated, so that the air compressor unloading port; the gas storage device is characterized by further comprising a gas storage bottle connecting port 4 communicated with a gas storage bottle, a controller 5 and a pressure sensor 6 for monitoring the air pressure in the gas storage bottle, wherein the pressure sensor 6 is connected with the controller 5 and sends an air pressure signal in the gas storage bottle to the controller 5, the gas storage device further comprises an active exhaust channel communicated with the unloading cavity 30 and the outside atmosphere, an exhaust electromagnetic valve 7 is installed on the active exhaust channel and controls the unloading cavity 30 to release pressure to the outside atmosphere through the exhaust electromagnetic valve 7, and the controller 5 is connected with the exhaust electromagnetic valve 7 and controls the work of the exhaust electromagnetic valve 7.

When the dryer reaches the set upper limit of air pressure, air is exhausted and unloaded, high-pressure control air for unloading the dryer can be filled into the unloading cavity 30 through the dryer connecting port 1, a movable valve core 31 in the mechanical unloading valve 3 is driven to be opened by the high-pressure air, after the unloading valve 3 is opened, an unloading port 2 of the air compressor can be communicated with the atmosphere, the air in a pipeline from the air compressor to the dryer end can be exhausted because the unloading port 2 of the air compressor is connected to an exhaust port of the air compressor, and the air compressor can be started in a no-load mode when the air compressor is started next time.

When the air pressure sensor 6 detects that the air pressure of the air storage bottle reaches the lower limit of the air pressure, the controller 5 enables the exhaust electromagnetic valve 7 to be powered on, the unloading cavity 30 is communicated with the outside atmosphere, the gas in the unloading cavity 30 is exhausted, the movable valve core 31 is reset, the communication between the unloading port 2 of the air compressor and the atmosphere is closed, and a signal code is sent to the whole vehicle through the communication device 9, so that the whole vehicle starts the air compressor, and the air supply function is recovered.

Example 2

The same as embodiment 1, except that the controller 5 includes an active unloading module 51, and the active unloading module 51 is connected to the air pressure sensor 6 and controls the operation of the exhaust solenoid valve 7.

The controller 5 further comprises a passive unloading module 52 and a passive exhaust passage for communicating the unloading cavity 30 with the gas storage cylinder connecting port 4, a point-acting type exhaust valve 8 is mounted on the passive exhaust passage, and the passive unloading module 52 is connected with the point-acting type exhaust valve 8 and controls the gas storage cylinder to open or close the unloading cavity 30.

The unloading device further comprises a communication device 9, the communication device 9 receives a passive unloading signal sent by the outside, and the communication device 9 is connected with a passive unloading module 52 in the controller 5.

When the air compressor is in an air supply state, under a certain condition, the whole vehicle needs the air compressor to stop the air supply function. The communication device 9 sends an instruction to the controller 5, the controller 5 receives the instruction, the inching type exhaust valve 8 is electrified and is attracted for 3 seconds, clean high-pressure gas is introduced into the unloading cavity 40 through the gas storage cylinder connecting port 4, the movable valve core 31 in the unloading valve 3 is driven by the high-pressure gas to be opened, the passive unloading function is realized, then the controller 5 feeds back information to the whole vehicle, the air compressor can be closed through informing the whole vehicle, and closed-loop control is formed.

Example 3

The air compressor temperature monitoring system is the same as that in embodiment 2, and is different from the air compressor temperature monitoring system in that the air compressor temperature monitoring system further comprises a motor temperature sensor 11 connected with the controller 5, wherein the motor temperature sensor 11 is a thermistor, the motor temperature sensor 11 monitors the temperature of the air compressor and converts the temperature into a temperature signal to be sent to the controller 5, the controller 5 sends the temperature signal to an operation end or an operator through the communication device 9, when the controller 5 detects that the running temperature of the air compressor motor is too high, a motor high-temperature alarm code is sent to the whole vehicle controller through the communication device 9, the whole vehicle is reminded of reducing the power of the electric air compressor to.

Still include the machine oil level sensor 12 of being connected with controller 5, machine oil level sensor 12 monitors the machine oil volume of air compressor machine and forms machine oil and maintain the signal transmission and give controller 5, and controller 5 maintains the signal transmission with machine oil through communication device 9 and gives operation end or operator, and when the inside machine oil of air compressor machine was not enough, controller 5 maintained the code transmission with machine oil through communication device 9 and gives vehicle control unit, reminds the user in time to add machine oil.

Still include the oil pressure switch 13 of being connected with controller 5, oil pressure switch 13 is installed in the inside lubricating system of air compressor machine, work normally when the inside lubricating system of air compressor machine, when establishing normal operating oil pressure, oil pressure switch 13 is inside will be closed to switch on, controller 5 monitors oil pressure switch 13's switching and forms lubricated fault signal, controller 5 sends lubricated fault signal for operation end or operator through communication device 9, controller 5 real-time detection oil pressure switch 13 inside on-off state, real time monitoring air compressor machine inside lubricating system's operating condition. If the air compressor is in the running state, the internal signal of the oil pressure switch 13 is disconnected, the controller 5 sends a lubricating system fault code to the vehicle control unit through the communication device 9, a user is warned to check the air compressor immediately, and running safety is guaranteed.

Still include the negative pressure sensor 14 who is connected with controller 5, negative pressure sensor 14 installs at the air compressor machine air inlet and monitors atmospheric pressure and form the negative pressure signal, and controller 5 launches the negative pressure signal for operation end or operator through communication device 9, reminds the operator in time to clean air cleaner or change air filter.

Example 4

The difference is that a check valve 10 is installed on the pipeline connecting the unloading valve 3 and the dryer connecting port 1, and the check valve 10 only allows the gas of the dryer connecting port 1 to flow to the unloading chamber 30, as in embodiment 1.