New energy automobile and finished automobile thermal management control device thereof

Abstract

The utility model provides a new energy automobile and an automobile thermal management control device thereof, and relates to the technical field of automobile thermal management. The device comprises a first circulating water path, a second circulating water path, a third circulating water path, an electromagnetic three-way valve assembly, a refrigeration assembly, a power battery box, a battery management system BMS, a controller EAC of an electric air conditioner for the new energy automobile, a vehicle control unit VCU, a liquid heater PTC and a chassis driving system intelligent heat dissipation system ATS. The device uniformly controls and manages the thermal management systems of the whole vehicle, provides an adaptive optimal distribution method for the thermal management of the whole vehicle, reduces the energy consumption of the whole vehicle, optimizes and reduces the number of parts, and reduces the cost and arrangement space of the whole vehicle. And therefore, the comfort and the economical efficiency of the new energy automobile are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle thermal management, and particularly relates to a new energy vehicle and a vehicle thermal management control device thereof. Background Art

[0002] At present, with the development and popularization of new energy vehicles, the vehicle adopts a decentralized thermal management method, that is, the in-vehicle heating system, the in-vehicle air conditioning system, the cooling system of the chassis motor and electric control, and the power battery thermal management system are designed independently. There are problems such as high vehicle energy consumption, high cost, and difficulty in arranging many parts in the layout space, which cannot meet the development needs of new energy buses. At present, most of the vehicle thermal management solutions on the market are that the cooling systems of the ATS chassis motor and electric control work independently, the power battery thermal management system works independently, and the in-vehicle air heating system works independently; this will cause the components such as PTC liquid heaters and circulating water pumps in the two systems of the in-vehicle heating system and the battery thermal management system to be repeatedly configured and cannot be shared, increasing the vehicle cost and the difficulty of arranging the layout space. The heat generated by the motor and electric control cannot be reused and is directly dissipated to the atmosphere, increasing the vehicle energy consumption.

[0003] In view of this, this application is proposed. Summary of the Utility Model

[0004] The utility model discloses a new energy vehicle and a vehicle thermal management control device thereof, which can at least partially improve the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vehicle thermal management control device for a new energy vehicle, which includes: a first circulating water circuit, a second circulating water circuit, a third circulating water circuit, an electromagnetic three-way valve assembly, a refrigeration assembly, a power battery box, a battery management system BMS, a controller EAC of an electric air conditioner for a new energy vehicle, a vehicle controller VCU, a liquid heater PTC, and a chassis drive system intelligent cooling system ATS;

[0007] Among them, the output end of the vehicle controller VCU is electrically connected to the control end of the electromagnetic three-way valve assembly, the output end of the power battery box is electrically connected to the battery management system BMS, the output end of the battery management system BMS is electrically connected to the input end of the vehicle controller VCU, the output end of the vehicle controller VCU is electrically connected to the input end of the controller EAC of the electric air conditioner for new energy vehicles, the output end of the controller EAC of the electric air conditioner for new energy vehicles is electrically connected to the input ends of the first circulating waterway, the second circulating waterway, the third circulating waterway, and the refrigeration component, the output end of the vehicle controller VCU is electrically connected to the input end of the liquid heater PTC and the input end of the intelligent heat dissipation system ATS of the chassis drive system, the first circulating waterway, the second circulating waterway, and the third circulating waterway are interconnected through the electromagnetic three-way valve assembly, circulating liquid is configured in the first circulating waterway, the second circulating waterway, and the third circulating waterway, and refrigerant is configured in the refrigeration component;

[0008] The vehicle controller VCU is configured to adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to form a large circulation of the first circulating waterway and the second circulating waterway when the ambient temperature is lower than a preset value; adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to form a large circulation of the first circulating waterway and the third circulating waterway when the vehicle is in a driving mode; adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to achieve the independent operation of the first circulating waterway, the second circulating waterway, and the third circulating waterway when the ambient temperature is higher than the preset value.

[0009] The present utility model further provides a new energy bus, which includes a vehicle body and the new energy vehicle integrated thermal management control device as described in any one of the above, and the new energy vehicle integrated thermal management control device is configured inside the vehicle body.

[0010] In summary, the new energy vehicle integrated thermal management control device uniformly controls and manages the various thermal management systems of the vehicle, provides an optimal distribution method for the integrated thermal management of the vehicle, reduces the energy consumption of the vehicle, optimizes and reduces the number of components, and reduces the vehicle cost and layout space. Thereby improving the comfort and economy of new energy vehicles. Description of the Drawings

[0011] Figure 1 is a framework diagram of the new energy vehicle integrated thermal management control device provided by an embodiment of the present utility model;

[0012] Figure 2 is a schematic diagram of the battery refrigeration mode provided by an embodiment of the present utility model;

[0013] Figure 3 is a schematic diagram of the external charging battery heating model provided by an embodiment of the present utility model;

[0014] Figure 4 It is a schematic diagram of the driving battery heating model provided by the embodiment of the present utility model. Specific embodiments

[0015] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] The following makes a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings.

[0017] Please refer to Figure 1 , the first embodiment of the present utility model discloses a new energy vehicle integrated thermal management control device, which is characterized by comprising: a first circulating water circuit, a second circulating water circuit, a third circulating water circuit, an electromagnetic three-way valve assembly, a refrigeration assembly, a power battery box, a battery management system BMS, a controller EAC of an electric air conditioner for new energy vehicles, a vehicle controller VCU, a liquid heater PTC, and a chassis drive system intelligent heat dissipation system ATS;

[0018] Among them, the output end of the vehicle control unit (VCU) is electrically connected to the control end of the electromagnetic three-way valve assembly; the output end of the power battery box is electrically connected to the battery management system (BMS); the output end of the battery management system (BMS) is electrically connected to the input end of the vehicle control unit (VCU); the output end of the vehicle control unit (VCU) is electrically connected to the input end of the controller (EAC) of the electric air conditioner for new energy vehicles; the output end of the controller (EAC) of the electric air conditioner for new energy vehicles is electrically connected to the input ends of the first circulation waterway, the second circulation waterway, the third circulation waterway, and the refrigeration component; the output end of the vehicle control unit (VCU) is electrically connected to the input ends of the liquid heater (PTC) and the intelligent cooling system (ATS) of the chassis drive system; the first circulation waterway, the second circulation waterway, and the third circulation waterway are interconnected through the electromagnetic three-way valve assembly; circulating liquid is configured in the first circulation waterway, the second circulation waterway, and the third circulation waterway; and refrigerant is configured in the refrigeration component.

[0019] The vehicle control unit (VCU) is configured to adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to form a large circulation of the first circulation waterway and the second circulation waterway when the ambient temperature is lower than a preset value; adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to form a large circulation of the first circulation waterway and the third circulation waterway when the vehicle is in a driving mode; and adjust the opening or closing of the solenoid valve in the electromagnetic three-way valve assembly to achieve the independent operation of the first circulation waterway, the second circulation waterway, and the third circulation waterway when the ambient temperature is higher than the preset value.

[0020] In this embodiment, the VCU is the vehicle control unit, which is the control center of the vehicle, manages and monitors the operation of each subsystem of the vehicle; performs online diagnosis and warning of the vehicle control system, and at the same time controls and manages the operation of the second circulation waterway, and realizes the associated operation of the three circulation waterways by controlling the first electromagnetic three-way valve 1, the second electromagnetic three-way valve 2, and the third electromagnetic three-way valve 3, and manages the coordinated operation of each circulation waterway under different working conditions and different requirements. The ATS controls and manages the operation of the third circulation waterway of the motor controller and the drive motor cooling system. The EAC is the controller of the vehicle air conditioning system, responsible for the control of the vehicle air conditioning system, air conditioning status feedback, and the operation of the first circulation waterway. The BMS is the power battery management system, responsible for the management of allowing charging / discharging of the power battery, real-time monitoring of battery physical parameters, estimation of the state of charge (SOC) of the battery, online diagnosis and warning, equalization management, etc.

[0021] Preferably, the first circulation water circuit includes a normally closed solenoid valve, a normally open solenoid valve, a first expansion tank 4, a first water temperature sensor 5, and a first circulation water pump 6. One end of the normally closed solenoid valve is connected to the electromagnetic three-way valve assembly. The other end of the normally closed solenoid valve is sequentially connected to the first expansion tank 4, the first circulation water pump 6, the first water temperature sensor 5, and one end of the power battery. The other end of the power battery is connected to one end of the normally open solenoid valve and the electromagnetic three-way valve assembly. The other end of the normally open solenoid valve is connected to the first expansion tank 4 through the refrigerant plate heat exchanger of the refrigeration assembly.

[0022] Specifically, when the ambient temperature is relatively low and the battery needs to be heated, in the parking and external charging conditions, the first circulation water circuit and the second circulation water circuit form a large circulation, and the circulating liquid is heated by the PTC liquid heater, and then the power battery is heated. In the vehicle driving mode, the first circulation water circuit and the third circulation water circuit form a large circulation, and the heat generated by the drive motor and the motor controller is used to heat the power battery. When the driver turns on the demand for in-vehicle warm air, the second circulation water circuit works normally to provide warm air for the vehicle interior. When the ambient temperature is relatively high, the three circulation water circuits operate independently. The controller EAC of the electric air conditioner for new energy vehicles controls the first circulation water circuit to work and cool the power battery. The intelligent heat dissipation system ATS of the chassis drive system works to cool the drive motor and the motor controller.

[0023] Preferably, the refrigeration assembly includes a refrigerant plate heat exchanger, a compressor, and a condenser. One end of the refrigerant plate heat exchanger is connected to one end of the compressor. The other end of the compressor is connected to one end of the condenser. The other end of the condenser is connected to the other end of the refrigerant plate heat exchanger. The refrigerant plate heat exchanger is configured to cool the circulating liquid.

[0024] Preferably, the second circulation water circuit includes a second circulation water pump 7, an in-vehicle warm water branch, a second fan 8, a second expansion tank 9, a PTC liquid heater, and a second water temperature sensor 10. One end of the second circulation water pump 7 is connected to the electromagnetic three-way valve assembly. The other end of the second circulation water pump 7 is connected to one end of the in-vehicle warm water branch. The second fan 8 is connected to the in-vehicle warm water branch. The other end of the in-vehicle warm water branch is sequentially connected to the second expansion tank 9, the PTC liquid heater, and the second water temperature sensor 10. One end of the second water temperature sensor 10 is connected to the electromagnetic three-way valve assembly.

[0025] Preferably, the third circulating waterway includes a third circulating water pump 11, a radiator, a third fan 12, a third expansion tank 13, a motor controller, and a drive motor. One end of the third circulating water pump 11 is connected to the electromagnetic three-way valve assembly, the other end of the third circulating water pump 11 is connected to one end of the radiator, the third fan 12 is connected to the radiator, the other end of the radiator is sequentially connected to the third expansion tank 13 and the motor controller, the output end of the motor controller is connected to the drive motor, and the drive motor is connected to the electromagnetic three-way valve assembly.

[0026] Preferably, the electromagnetic three-way valve assembly includes a first electromagnetic three-way valve 1, a second electromagnetic three-way valve 2, and a third electromagnetic three-way valve 3. The NO end of the second electromagnetic three-way valve 2 is connected to the power battery box and the NO end of the third electromagnetic three-way valve 3. The NC end of the second electromagnetic three-way valve 2 is connected to the NO end of the first electromagnetic three-way valve 1 and the second water temperature sensor 10 of the second circulating waterway. The third end of the second electromagnetic three-way valve 2 is connected to the second circulating water pump 7 of the second circulating waterway. The NC end of the first electromagnetic three-way valve 1 is connected to the drive motor of the third circulating waterway and the NC end of the data third electromagnetic three-way valve 3. The third end of the first electromagnetic three-way valve 1 is connected to the normally closed solenoid valve of the first circulating waterway. The third end of the third electromagnetic three-way valve 3 is connected to the third circulating water pump 11 of the third circulating waterway.

[0027] Please refer to Figure 2 , specifically, in this embodiment, in a high-temperature environment in summer, the vehicle control unit VCU controls the first electromagnetic three-way valve 1 to be normally closed (NC), the second electromagnetic three-way valve 2 to be normally closed (NC), and the third electromagnetic three-way valve 3 to be normally closed (NC). The battery management system BMS monitors that the power battery pack needs refrigeration and sends the refrigeration demand to the controller EAC of the electric air conditioner for new energy vehicles. The controller EAC of the electric air conditioner for new energy vehicles controls the circulating liquid in the battery water circulation to be cooled through the compressor, condenser, refrigeration plate heat exchanger, and refrigerant. The cooled circulating liquid enters the power battery box to cool the battery. When the battery temperature exceeds the optimal operating temperature threshold, the battery management system BMS sends a "refrigeration" demand instruction to the controller EAC of the electric air conditioner for new energy vehicles. The controller EAC of the electric air conditioner for new energy vehicles controls the compressor, the first circulating water pump 6, and the condenser to work. The refrigerant cools the circulating liquid in the battery water circulation through the refrigeration plate heat exchanger. The cooled circulating liquid is sent to the power battery box through the first circulating water pump 6 to cool the battery. After passing through the power battery box, the circulating liquid returns to the refrigeration plate heat exchanger through the normally open solenoid valve for heat dissipation and cooling. The ECU of the intelligent cooling system ATS of the chassis drive system monitors the temperature of the circulating liquid in the third circulating waterway and automatically controls the radiator fan and the third circulating water pump 11 to work to cool the motor controller and the drive motor.

[0028] Please refer to Figure 3 , when the vehicle is externally charged and the driver turns on forced heating during parking in a low-temperature environment in winter, the vehicle control unit (VCU) controls the first electromagnetic three-way valve 1 to be normally open (NO), the second electromagnetic three-way valve 2 to be normally open (NO), and the third electromagnetic three-way valve 3 to be normally closed (NC). The controller of the electric air conditioner for new energy vehicles (EAC) controls the opening and closing of the normally closed solenoid valve. When the vehicle is externally charged or the driver turns on the forced heating switch in a low-temperature environment, and the battery management system (BMS) monitors that the battery temperature is lower than the set threshold, the battery management system (BMS) sends a "heating" demand instruction to the vehicle control unit (VCU). The vehicle control unit (VCU) controls the first electromagnetic three-way valve 1 to be normally open (NO), the second electromagnetic three-way valve 2 to be normally open (NO), and the third electromagnetic three-way valve 3 to be normally closed (NC). At the same time, it sends a water circuit series instruction to the controller of the electric air conditioner for new energy vehicles (EAC). The controller of the electric air conditioner for new energy vehicles (EAC) opens the normally closed solenoid valve, closes the normally open solenoid valve, and turns on the first circulation pump 6. The vehicle control unit (VCU) controls the liquid heater PTC to work, turns on the second circulation pump 7, and activates the vehicle's water heating system. The circulating liquid in the vehicle's water circulation is heated and then enters the battery water circulation through the first electromagnetic three-way valve 1, enters the power battery box to heat the battery, and the circulating water enters the second electromagnetic three-way valve 2 and then enters the second circulation pump 7, and then returns to the liquid heater PTC.

[0029] Please refer to Figure 4, when driving, the vehicle control unit (VCU) controls the first electromagnetic three-way valve 1 to be normally open (NC), the second electromagnetic three-way valve 2 to be normally closed (NC), and the third electromagnetic three-way valve 3 to be normally open (NO). The controller of the electric air conditioner for new energy vehicles (EAC) controls the opening and closing of the normally closed solenoid valve. When the vehicle is running in a low-temperature environment and the battery management system (BMS) monitors that the battery temperature is lower than the set threshold, the BMS sends a "heating" demand instruction to the VCU. The VCU controls the first electromagnetic three-way valve 1 to be normally open (NO), the second electromagnetic three-way valve 2 to be normally closed (NC), and the third electromagnetic three-way valve 3 to be normally open (NO). At the same time, it sends a water circuit series instruction to the EAC of the electric air conditioner for new energy vehicles. The EAC opens the normally closed solenoid valve, closes the normally open solenoid valve, and turns on the first circulation pump 6. The VCU sends a water circuit series instruction to the intelligent cooling system of the chassis drive system (ATS). After receiving the water circuit series instruction, the ATS turns off the radiator fan. The circulating liquid passes through the motor controller and the drive motor, and then the water temperature rises. It enters the power battery circulation water circuit through the first electromagnetic three-way valve 1. The EAC controls the operation of the first circulation pump 6. The heated hot water warms the power battery, and then returns to the motor and electronic control circulation water circuit through the third electromagnetic three-way valve 3. The circulating liquid is heated again through the motor and electronic control.

[0030] When the VCU detects that the driver requests to turn on the in-vehicle warm air, it controls the second circulation pump 7, the in-vehicle warm air fan, and the liquid heater PTC to work to provide warm air for the vehicle interior.

[0031] In summary, the battery heating system and the in-vehicle warm air heating system of the thermal management control device for the new energy vehicle integrate with the motor and the intelligent cooling system of the chassis drive system. The three circulation water circuits work together to reduce the energy consumption of the whole vehicle. And through the integrated thermal management design of the whole vehicle, this device has fewer components, reduces the cost and layout space of the whole vehicle, and improves the economy of the whole vehicle.

[0032] The second embodiment of the present invention provides a new energy bus, which includes a vehicle body and the thermal management control device for the new energy vehicle as described in any one of the above. The thermal management control device for the new energy vehicle is configured inside the vehicle body.

[0033] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A vehicle thermal management control device for new energy vehicles, characterized in that, Including: The first circulating waterway, the second circulating waterway, the third circulating waterway, the electromagnetic three-way valve assembly, the refrigeration assembly, the power battery box, the battery management system BMS, the controller EAC of the electric air conditioner for new energy vehicles, the vehicle controller VCU, the liquid heater PTC, and the intelligent cooling system ATS of the chassis drive system; Wherein, the output end of the vehicle controller VCU is electrically connected to the control end of the electromagnetic three-way valve assembly, the output end of the power battery box is electrically connected to the battery management system BMS, the output end of the battery management system BMS is electrically connected to the input end of the vehicle controller VCU, the output end of the vehicle controller VCU is electrically connected to the input end of the controller EAC of the electric air conditioner for new energy vehicles, the output end of the controller EAC of the electric air conditioner for new energy vehicles is electrically connected to the input ends of the first circulating waterway, the second circulating waterway, the third circulating waterway, and the refrigeration assembly, the output end of the vehicle controller VCU is electrically connected to the input ends of the liquid heater PTC and the intelligent cooling system ATS of the chassis drive system, the first circulating waterway, the second circulating waterway, and the third circulating waterway are connected to each other through the electromagnetic three-way valve assembly, circulating liquid is configured in the first circulating waterway, the second circulating waterway, and the third circulating waterway, and refrigerant is configured in the refrigeration assembly; The vehicle controller VCU is configured to adjust the on or off of the solenoid valve in the electromagnetic three-way valve assembly when the ambient temperature is lower than a preset value to form a large circulation with the first circulating waterway and the second circulating waterway; when the vehicle is in a driving mode, adjust the on or off of the solenoid valve in the electromagnetic three-way valve assembly to form a large circulation with the first circulating waterway and the third circulating waterway; when the ambient temperature is higher than the preset value, adjust the on or off of the solenoid valve in the electromagnetic three-way valve assembly to achieve the independent operation of the first circulating waterway, the second circulating waterway, and the third circulating waterway.

2. The whole vehicle thermal management control device for a new energy vehicle according to claim 1, characterized in that, The first circulating waterway includes a normally closed solenoid valve, a normally open solenoid valve, a first expansion tank, a first water temperature sensor, and a first circulating water pump. Wherein, one end of the normally closed solenoid valve is connected to the electromagnetic three-way valve assembly, the other end of the normally closed solenoid valve is sequentially connected to the first expansion tank, the first circulating water pump, the first water temperature sensor, and one end of the power battery, the other end of the power battery is connected to one end of the normally open solenoid valve and the electromagnetic three-way valve assembly, and the other end of the normally open solenoid valve is connected to the first expansion tank through the refrigeration plate heat exchanger of the refrigeration assembly.

3. The whole vehicle thermal management control device for a new energy vehicle according to claim 1, characterized in that, The refrigeration assembly includes a refrigeration plate heat exchanger, a compressor, and a condenser. Wherein, one end of the refrigeration plate heat exchanger is connected to one end of the compressor, the other end of the compressor is connected to one end of the condenser, the other end of the condenser is connected to the other end of the refrigeration plate heat exchanger, and the refrigeration plate heat exchanger is configured to cool the circulating liquid.

4. A new energy vehicle integrated thermal management control device according to claim 1, characterized in that, The second circulating water path includes a second circulating water pump, a vehicle interior warm water branch, a second fan, a second expansion tank, a PTC liquid heater, and a second water temperature sensor. One end of the second circulating water pump is connected to the electromagnetic three-way valve assembly, and the other end of the second circulating water pump is connected to one end of the vehicle interior warm water branch. The second fan is connected to the vehicle interior warm water branch. The other end of the vehicle interior warm water branch is sequentially connected to the second expansion tank, the PTC liquid heater, and the second water temperature sensor. One end of the second water temperature sensor is connected to the electromagnetic three-way valve assembly.

5. A new energy vehicle integrated thermal management control device according to claim 1, wherein, The third circulating water path includes a third circulating water pump, a radiator, a third fan, a third expansion tank, a motor controller, and a drive motor. One end of the third circulating water pump is connected to the electromagnetic three-way valve assembly, and the other end of the third circulating water pump is connected to one end of the radiator. The third fan is connected to the radiator. The other end of the radiator is sequentially connected to the third expansion tank and the motor controller. The output end of the motor controller is connected to the drive motor, and the drive motor is connected to the electromagnetic three-way valve assembly.

6. The whole vehicle thermal management control device for a new energy vehicle according to claim 1, characterized in that The electromagnetic three-way valve assembly includes a first electromagnetic three-way valve, a second electromagnetic three-way valve, and a third electromagnetic three-way valve. The NO end of the second electromagnetic three-way valve is connected to the power battery box and the NO end of the third electromagnetic three-way valve. The NC end of the second electromagnetic three-way valve is connected to the NO end of the first electromagnetic three-way valve and the second water temperature sensor of the second circulating water path. The third end of the second electromagnetic three-way valve is connected to the second circulating water pump of the second circulating water path. The NC end of the first electromagnetic three-way valve is connected to the drive motor of the third circulating water path and the NC end of the data third electromagnetic three-way valve. The third end of the first electromagnetic three-way valve is connected to the normally closed solenoid valve of the first circulating water path. The third end of the third electromagnetic three-way valve is connected to the third circulating water pump of the third circulating water path.

7. A new energy vehicle, characterized in that, It includes a vehicle body and the new energy vehicle integrated thermal management control device according to any one of claims 1 to 6, and the new energy vehicle integrated thermal management control device is arranged inside the vehicle body.

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