CN212654162U - Air conditioner control system of pure electric vehicle - Google Patents
Air conditioner control system of pure electric vehicle Download PDFInfo
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- CN212654162U CN212654162U CN202020952163.0U CN202020952163U CN212654162U CN 212654162 U CN212654162 U CN 212654162U CN 202020952163 U CN202020952163 U CN 202020952163U CN 212654162 U CN212654162 U CN 212654162U
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Abstract
The utility model discloses an air conditioner control system of pure electric vehicles, including air conditioner control panel, evaporimeter temperature sensor, the outer temperature sensor of car, temperature sensor in the car, refrigerant pipeline pressure sensor, vehicle control unit, fan, compressor controller, air conditioner control panel passes through CAN bus connection vehicle control unit, evaporimeter temperature sensor, the outer temperature sensor of car, the inner temperature sensor of car, refrigerant pipeline pressure sensor are connected respectively to the input of vehicle control unit; the output end of the vehicle control unit is connected with the fan; the vehicle control unit is connected with the compressor controller through the CAN bus, and the compressor controller is used for controlling the work of the compressor according to signals of the vehicle control unit. The utility model discloses control the operation of air conditioner under the prerequisite that can guarantee pure electric vehicles vehicle safe operation, promote electric automobile's on-vehicle air conditioner's reliable operation.
Description
Technical Field
The utility model relates to an air conditioner control field, in particular to pure electric vehicles's air conditioner control system.
Background
With the rising of crude oil price and the increasing attention of the environmental protection problem all over the world, China also actively promotes the development of the environmental protection business, at present, in the automobile field, China is promoting the popularization and the development of new energy automobiles all over the world, and the keeping quantity of the new energy automobiles is the first place in the world at present.
At present, an air conditioning system of a traditional fuel oil automobile has an inseparable relation with an engine. However, the new energy pure electric vehicle needs to adopt a new control system in the aspect of vehicle air conditioning because a traditional internal combustion engine is eliminated. On the premise of ensuring the personal safety of a driver and other passengers, all functions and performances of the traditional automobile air conditioner are met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an air conditioner control system of a pure electric vehicle, which is used for realizing the control of an automobile air conditioner on the premise of ensuring the running of the vehicle.
In order to achieve the purpose, the invention adopts the technical scheme that: the air conditioner control system of the pure electric vehicle comprises an air conditioner control panel, an evaporator temperature sensor, an external temperature sensor, an internal temperature sensor, a refrigerant pipeline pressure sensor, a vehicle control unit, a fan and a compressor controller, wherein the air conditioner control panel is connected with the vehicle control unit through a CAN (controller area network) bus, and the input end of the vehicle control unit is respectively connected with the evaporator temperature sensor, the external temperature sensor, the internal temperature sensor and the refrigerant pipeline pressure sensor; the output end of the vehicle control unit is connected with the fan; the vehicle control unit is connected with the compressor controller through the CAN bus, and the compressor controller is used for controlling the work of the compressor according to signals of the vehicle control unit.
The vehicle control unit receives a target parameter through an air conditioner control panel, and controls the rotating speed of the fan according to a refrigerant pipeline pressure signal; and the vehicle control unit controls the rotating speed of the compressor according to the values of the evaporator temperature sensor, the vehicle interior temperature sensor and the vehicle exterior temperature sensor and the vehicle speed and sends a compressor rotating speed control signal to the compressor controller.
And the vehicle control unit is connected with the refrigerant pipeline pressure abnormity alarm module.
And the vehicle control unit sends the rotating speed control signal of the compressor to the compressor controller through a bus in a message broadcasting mode.
The refrigerant pipeline pressure abnormity alarm module comprises a display and an alarm, and the display is a vehicle-mounted display.
The utility model has the advantages that: the operation of control air conditioner under the prerequisite that can guarantee pure electric vehicles vehicle safe operation promotes electric vehicles's on-vehicle air conditioner's reliable operation, and the rotational speed through the dynamic adjustment compressor of multi-parameter can reach the purpose of reaching energy-saving control under the prerequisite that satisfies air conditioner work moreover to can practice thrift the electric energy and then reach and increase continuation of the journey, reduce energy consumption's purpose.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
fig. 1 is a schematic diagram of the structure of the control system of the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
The air conditioner control system of the pure electric vehicle comprises an air conditioner control panel, an evaporator temperature sensor, an external temperature sensor, an internal temperature sensor, a refrigerant pipeline pressure sensor, a vehicle control unit, a fan and a compressor controller, wherein the air conditioner control panel is connected with the vehicle control unit through a CAN (controller area network) bus and used for inputting manual parameters of an air conditioner through the air conditioner control panel; the input end of the vehicle control unit is respectively connected with an evaporator temperature sensor, an outside temperature sensor, an inside temperature sensor and a refrigerant pipeline pressure sensor and is used for respectively acquiring temperature data of the evaporator, the outside temperature, the inside temperature and a refrigerant pipeline pressure signal; the output end of the vehicle control unit is connected with the fan and used for outputting a control signal to control the rotating speed, the work and the like of the fan; the vehicle control unit is connected with the compressor controller through the CAN bus, and the compressor controller is used for controlling the work of the compressor according to signals of the vehicle control unit.
The vehicle control unit receives the target parameters through the air conditioner control panel, and controls the rotating speed of the fan according to the pressure signal of the refrigerant pipeline; and the vehicle control unit controls the rotating speed of the compressor according to the values of the evaporator temperature sensor, the vehicle interior temperature sensor and the vehicle exterior temperature sensor and the vehicle speed and sends a compressor rotating speed control signal to the compressor controller.
When the pipeline pressure is abnormal, the air conditioner cannot be started at the moment, and meanwhile, the vehicle control unit is connected with the refrigerant pipeline pressure abnormity alarm module. The alarm device is characterized in that alarm reminding is carried out through the pipeline pressure abnormity alarm module, wherein the pipeline pressure abnormity alarm module can be realized by adopting a buzzer and a display, and the display screen is a vehicle-mounted display. And the output end of the vehicle control unit respectively sends the alarm signal and the reminding signal to the buzzer and the display through the CAN bus for controlling alarm reminding and display.
The driver sets an air conditioner refrigeration mode and a target temperature by operating an air conditioner control panel in the vehicle. The air conditioner control panel broadcasts information through a CAN bus according to current setting, the vehicle control unit receives request information of the air conditioner control panel, calculates a comprehensive temperature judgment value according to parameter values of an evaporator temperature sensor, an in-vehicle temperature sensor and an out-vehicle temperature sensor, forms a target rotating speed of the compressor according to current vehicle speed information, transmits a command to the compressor controller in a message broadcasting mode through the CAN bus, and the compressor controller controls the compressor to work at the target rotating speed according to the command. Thereby achieving the effect of refrigeration in the vehicle.
Firstly, the functions of each module of the system are introduced as follows:
1. compressor controller
The actuating mechanism for controlling the rotating speed of the compressor receives a command of a Vehicle Control Unit (VCU) and directly controls the rotating speed of the compressor.
2. Evaporator temperature sensor
The evaporator temperature is measured and directly collected by a Vehicle Control Unit (VCU).
3. Vehicle control unit
The whole vehicle control core receives high and low level signals of the electronic gear shifting module and carries out logic judgment on the signals, receives information such as the current vehicle speed of the electric drive system through CAN bus communication, sends information such as a drive mode command and torque information to the electric drive system, and broadcasts current gear information to other related modules.
4. Line pressure signal
The pressure data can be directly detected by the pressure sensor for judgment, whether the starting condition is met or not is judged according to the preset pressure value, and the specific normal pressure range can be calibrated according to the condition; in addition, the pressure can be detected by a switch type pressure sensor or a switch valve, the sensor can only output high and low levels, the main purpose of the pressure sensor is to save cost, the output is to output high and low levels after the voltage value of the detected pressure conversion is compared with the preset standard voltage, two sensors are respectively arranged at different positions in a pipeline during realization to measure the pressure managed by the refrigerant of the compressor, and different electric signals are output according to different set pressure values, and the specific performance is as follows: when the pipeline pressure is normal, the two paths of signals are both low level; when the pipeline pressure reaches a middle-level pressure value (which can be set), the signal 1 is at a high level, and the signal 2 is at a low level; when the pipeline pressure is too low, the signal 1 is at a low level, and the signal 2 is at a high level; when the pipeline pressure is too high, both signals are high level, as shown in table 2.
| Signal 1 | Signal 2 | Pressure value of pipeline |
| Is low in | Is low in | Is normal |
| Is low in | Height of | Too low |
| Height of | Is low in | Medium pressure |
| Height of | Height of | Too high |
TABLE 2 logic table for pipeline pressure signal
5. Fan with cooling device
The condenser cooling fan is divided into a high-speed gear and a low-speed gear according to the rotating speed.
6. CAN bus
The CAN bus is mainly a main carrier for communication of each connection module on the bus.
The embodiment of the invention provides an air conditioner control system of a pure electric vehicle, which comprises:
1. the system comprises an air conditioner control panel, an evaporator temperature sensor, an external temperature sensor, an internal temperature sensor, a refrigerant pipeline pressure signal, a vehicle control unit, a compressor controller and a vehicle-mounted compressor.
2. Specifically, an evaporator temperature sensor, an in-vehicle temperature sensor and an out-vehicle temperature sensor are connected with a vehicle control unit; the pressure signal of the refrigerant pipeline and the fan are connected with a vehicle control unit, and the vehicle control unit, the air conditioner control panel and the compressor controller are connected through a CAN bus.
The driver sets a refrigeration mode and a target temperature through the air conditioner control panel, the air conditioner control panel receives the air conditioner control intention of the driver, converts the current air conditioner setting target value into a CAN bus message signal, and inputs an air conditioner target parameter to the vehicle control unit in a CAN bus message broadcasting mode.
After receiving target parameters of an air conditioner control panel, a vehicle control unit detects the pressure of a refrigerant pipeline through a level signal, when the pressure of the refrigerant pipeline is too high or too low, the pressure does not meet the starting condition of the air conditioner, ignores the working request of the air conditioner, and alarms that the pressure of the air conditioner pipeline is abnormal through a CAN bus; when the pressure of a refrigerant pipeline is in a medium-pressure state, the vehicle control unit directly starts a high-speed mode of a fan, judges values of an evaporator temperature sensor, an in-vehicle temperature sensor and an out-vehicle temperature sensor, calculates a comprehensive temperature judgment value, and inputs a target rotating speed of a compressor to a compressor controller through a CAN bus in a message broadcasting mode according to parameters of a current vehicle speed comparison table 1, wherein the compressor controller controls the compressor to work according to the target rotating speed according to a compressor rotating speed request of the vehicle control unit; when the pressure of a refrigerant pipeline is in a normal state, the vehicle control unit directly starts a low-speed mode of a fan, judges values of an evaporator temperature sensor, an in-vehicle temperature sensor and an out-vehicle temperature sensor, calculates a comprehensive temperature judgment value, inputs a target rotating speed of a compressor to a compressor controller through a CAN bus in a message broadcasting mode according to parameters of a current vehicle speed comparison table 2, and controls the compressor to work according to the target rotating speed according to a compressor rotating speed request of the vehicle control unit
In the working process of the air conditioning system, the vehicle control unit monitors the values of the evaporator temperature sensor, the vehicle interior temperature sensor and the vehicle exterior temperature sensor, the vehicle speed and the pressure state of the refrigerant pipeline in real time, and continuously adjusts the rotating speed of the compressor, so that the purposes of energy conservation and comfort are achieved. When the pipeline pressure changes to be medium pressure, the vehicle control unit switches the fan to be in a high-speed mode, and when the pipeline pressure changes to be too high or too low, the vehicle control unit closes the air conditioning system and broadcasts the air conditioning system to give an alarm through the CAN bus.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (5)
1. The utility model provides a pure electric vehicles's air conditioner control system which characterized in that: the system comprises an air conditioner control panel, an evaporator temperature sensor, an outside temperature sensor, an inside temperature sensor, a refrigerant pipeline pressure sensor, a vehicle control unit, a fan and a compressor controller, wherein the air conditioner control panel is connected with the vehicle control unit through a CAN bus, and the input end of the vehicle control unit is respectively connected with the evaporator temperature sensor, the outside temperature sensor, the inside temperature sensor and the refrigerant pipeline pressure sensor; the output end of the vehicle control unit is connected with the fan; the vehicle control unit is connected with the compressor controller through the CAN bus, and the compressor controller is used for controlling the work of the compressor according to signals of the vehicle control unit.
2. The air conditioning control system of the pure electric vehicle as claimed in claim 1, wherein: the vehicle control unit receives a target parameter through an air conditioner control panel, and controls the rotating speed of the fan according to a refrigerant pipeline pressure signal; and the vehicle control unit controls the rotating speed of the compressor according to the values of the evaporator temperature sensor, the vehicle interior temperature sensor and the vehicle exterior temperature sensor and the vehicle speed and sends a compressor rotating speed control signal to the compressor controller.
3. The air conditioning control system of the pure electric vehicle as claimed in claim 1 or 2, wherein: and the vehicle control unit is connected with the refrigerant pipeline pressure abnormity alarm module.
4. The air conditioning control system of the pure electric vehicle as claimed in claim 1 or 2, wherein: and the vehicle control unit sends the rotating speed control signal of the compressor to the compressor controller through a bus in a message broadcasting mode.
5. The air conditioning control system of the pure electric vehicle as claimed in claim 3, wherein: the refrigerant pipeline pressure abnormity alarm module comprises a display and an alarm, and the display is a vehicle-mounted display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020952163.0U CN212654162U (en) | 2020-05-29 | 2020-05-29 | Air conditioner control system of pure electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020952163.0U CN212654162U (en) | 2020-05-29 | 2020-05-29 | Air conditioner control system of pure electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212654162U true CN212654162U (en) | 2021-03-05 |
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| CN202020952163.0U Active CN212654162U (en) | 2020-05-29 | 2020-05-29 | Air conditioner control system of pure electric vehicle |
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| CN (1) | CN212654162U (en) |
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Effective date of registration: 20230407 Address after: Floor 18, Building 13, Science and Technology Industrial Park, No. 717 Zhongshan South Road, Wuhu High tech Industrial Development Zone, Yijiang District, Wuhu City, Anhui Province, 241000 Patentee after: Wuhu Tairui Automobile Co.,Ltd. Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Patentee before: Chery Commercial Vehicles (Anhui) Co., Ltd. |