A thermal management system for a vehicle and a vehicle

Abstract

The present invention provides a thermal management system for a vehicle and a vehicle. The thermal management system includes: an air conditioning system, a battery system, an electric drive cooling system, a battery cooler, a heat dissipation module, and a heat exchange module. The heat exchange module includes a first heat exchange module, a second heat exchange module, and a third heat exchange module that are interconnected and used to achieve thermal connection among the air conditioning system, the battery system, and the electric drive cooling system. By adopting the technical solution of the present invention, when it is necessary to cool the battery, the battery cooler absorbs the heat of the battery and then enters the air conditioning system, and transfers part of the heat to the second heat exchange module and the third heat exchange module through the first heat exchange module. Thus, the battery system and the electric drive cooling system are used to assist in heat dissipation, which can improve the heat dissipation efficiency of the battery under high-temperature working conditions, avoid the risk of fire caused by excessive battery temperature, and extend the service life of the battery.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy for vehicles, and particularly to a thermal management system for a vehicle and a vehicle. Background Art

[0002] Electric vehicles replace oil with electricity, enabling zero emissions of polluting gases and low noise, and are an important means to solve energy and environmental problems. During use, when the battery is charged at a high temperature, the battery temperature rises rapidly. Since pure electric vehicles have a large amount of heat dissipation from the battery during high-temperature fast charging and insufficient cooling, it is easy to cause battery range attenuation, affecting the driving range, and even causing the battery to catch fire, affecting the user experience. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a thermal management system for a vehicle and a corresponding vehicle that overcome the above problems or at least partially solve the above problems.

[0004] To solve the above problems, on the one hand, embodiments of the present invention disclose a thermal management system for a vehicle, including: an air conditioning system, a battery system, an electric drive cooling system, a battery cooler, a heat dissipation module, and a heat exchange module;

[0005] The battery cooler is respectively connected to the air conditioning system and the battery system; the heat exchange module is respectively connected to the air conditioning system, the battery system, and the electric drive cooling system; the heat dissipation module is respectively connected to the air conditioning system, the battery system, and the electric drive cooling system;

[0006] The heat exchange module includes a first heat exchange module, a second heat exchange module, and a third heat exchange module that are interconnected. The first heat exchange module is in communication with the air conditioning system, the second heat exchange module is in communication with the battery system, and the third heat exchange module is in communication with the electric drive cooling system. The heat exchange module is used to achieve heat communication between the air conditioning system, the battery system, and the electric drive cooling system.

[0007] Optionally, the thermal management system further includes a plurality of valves, a plurality of electronic water pumps, and a controller;

[0008] The plurality of valves and the plurality of connecting pipes are respectively arranged in the air conditioning system, the battery system, and the electric drive cooling system to achieve communication between the corresponding systems in the thermal management system;

[0009] The controller is used to couple one or more systems among the air conditioning system, the battery system, and the electric drive cooling system by controlling the plurality of valves and the electric water pump, so that the thermal management system can switch between the motor cooling mode, the battery cooling mode, the battery heating mode, the occupant compartment heating mode, and the occupant compartment cooling mode.

[0010] Optionally, the electric drive cooling system includes: a motor and high-voltage components, and the motor, the electric water pump, the high-voltage components, the heat dissipation module, and the heat exchange module are connected in sequence;

[0011] When the controller activates the motor cooling mode, the electric water pump is used to drive the coolant to circulate in the electric drive cooling system. After the coolant absorbs the heat of the motor, it enters the heat dissipation module through the electric drive cooling system to release heat.

[0012] Optionally, the air conditioning system includes: a gas-liquid separator and an indoor evaporator;

[0013] When the controller activates the occupant compartment cooling mode, the compressor compresses the refrigerant and converts it into a gaseous refrigerant. The gaseous refrigerant enters the heat exchange module through the air conditioning system. The heat exchange module cools the gaseous refrigerant. The first heat exchange module transfers part of the heat to the second heat exchange module and the third heat exchange module respectively. After the gaseous refrigerant is cooled, it turns into a liquid refrigerant and dissipates heat through the heat dissipation module;

[0014] After the liquid refrigerant flows out of the heat dissipation module, it passes through the gas-liquid separator and the indoor evaporator in sequence through the air conditioning system. The liquid refrigerant evaporates and absorbs heat in the indoor evaporator to achieve the cooling of the occupant compartment.

[0015] Optionally, the air conditioning system includes: a gas-liquid separator and an indoor heat exchanger;

[0016] When the controller activates the occupant compartment heating mode, the compressor compresses the refrigerant and converts it into a gaseous refrigerant. The gaseous refrigerant is converted into a liquid refrigerant after passing through the indoor heat exchanger. Heat is dissipated during the condensation process to warm the occupant compartment, so as to achieve the heating of the occupant compartment;

[0017] The condensed liquid refrigerant enters the heat dissipation module through the air conditioning system. The liquid refrigerant is converted into a gaseous refrigerant after evaporating in the heat dissipation module. During the evaporation process, the refrigerant absorbs the ambient heat and transfers the heat to the occupant compartment.

[0018] Optionally, the air conditioning system includes: a gas-liquid separator and an indoor heat exchanger;

[0019] When the controller activates the heating mode of the passenger compartment, the electric water pump is used to drive the coolant to circulate in the electric drive cooling system. After the coolant absorbs the heat of the motor, it transfers the heat to the first heat exchange module through the third heat exchange module;

[0020] After the compressor compresses the refrigerant, it is transformed into gaseous refrigerant. The gaseous refrigerant is transformed into liquid refrigerant after passing through the indoor heat exchanger. During the condensation process, heat is dissipated to warm the passenger compartment, so as to achieve heating of the passenger compartment;

[0021] The condensed liquid refrigerant enters the heat exchange module through the air conditioning system. The evaporator in the heat exchange module transforms the liquid refrigerant into gaseous refrigerant, absorbs the heat in the first heat exchange module, and transfers the heat to the passenger compartment.

[0022] Optionally, the thermal management system further includes a temperature sensor and a battery heater. The temperature sensor is used to detect the temperature of the battery;

[0023] When the temperature of the battery is lower than the preset temperature, the controller activates the battery heating mode, and the battery heater heats the battery.

[0024] Optionally, when the controller activates the battery heating mode, if the vehicle is in a driving state, a part of the battery system and a part of the electric drive cooling system are coupled to form a battery heating system. The electric water pump drives the coolant to circulate in the battery heating system. After the coolant absorbs the heat of the motor, it heats the battery.

[0025] Optionally, the heat dissipation module includes an outdoor heat exchanger and two low-temperature radiators. The outdoor radiator is connected to the first heat exchange module through the air conditioning system, and the two low-temperature radiators are respectively connected to the second heat exchange module and the third heat exchange module.

[0026] On the other hand, an embodiment of the present invention also discloses a vehicle, on which the above-mentioned thermal management system is provided.

[0027] The technical solution of the present invention provides a vehicle thermal management system, including: an air conditioning system, a battery system, an electric drive cooling system, a battery cooler, a heat dissipation module, and a heat exchange module; wherein, the heat exchange module includes a first heat exchange module, a second heat exchange module, and a third heat exchange module that are interconnected to achieve heat communication between the air conditioning system, the battery system, and the electric drive cooling system. By adopting the technical solution of the present invention, when it is necessary to cool the battery, the battery cooler absorbs the battery heat and then enters the air conditioning system, and transfers part of the heat to the second heat exchange module and the third heat exchange module through the first heat exchange module, so that the battery system and the electric drive cooling system can assist in heat dissipation, which can improve the heat dissipation efficiency of the battery under high-temperature working conditions, avoid the risk of fire caused by excessive battery temperature, and improve the service life of the battery. Description of the Drawings

[0028] Figure 1 It is a structural diagram of a vehicle thermal management system provided by an embodiment of the present invention;

[0029] Figure 2 It is a structural diagram of another vehicle thermal management system provided by an embodiment of the present invention.

[0030] Description of the Drawings: 1. Battery, 2. Battery cooler, 3. Compressor, 4. Heat dissipation module, 5. Heat exchange module, 6. Motor, 7. Electric water pump, 8. Gas-liquid separator, 9. Indoor evaporator, 10. Indoor heat exchanger, 11. Thermostatic expansion valve, 12. Flow control valve, 13. First electronic expansion valve, 14. Second electronic expansion valve, 15. First three-way pipe, 16. Second three-way pipe, 17. Third three-way pipe, 18. Fourth three-way pipe, 19. Fifth three-way pipe, 20. Three-way valve, 21. First four-way valve, 22. Sixth three-way pipe, 23. Seventh three-way pipe, 24. Four-way pipe, 25. Second four-way valve, 26. Third four-way valve, 27. Battery heater, 28. High-voltage component, 41. Outdoor heat exchanger, 42. First low-temperature radiator, 43. Second low-temperature radiator, 51. First heat exchange module, 52. Second heat exchange module, 53. Third heat exchange module. Detailed Embodiments

[0031] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Figure 1 It is a structural diagram of a vehicle thermal management system provided by an embodiment of the present invention. The thermal management system includes a battery 1, a battery cooler 2, a compressor 3, a heat dissipation module 4, a heat exchange module 5, as well as an air conditioning system, a battery system, and an electric drive cooling system;

[0033] When the battery 1 is cooled, the heat of the battery enters the compressor 3 through the battery cooler 2. After the refrigerant in the compressor 3 absorbs heat, the refrigerant is compressed, and the compressed refrigerant flows into the air-conditioning system and reaches the heat exchange module 5 through the air-conditioning system;

[0034] The heat exchange module 5 is used to cool the compressed refrigerant. The heat exchange module 5 includes a first heat exchange module 51, a second heat exchange module 52, and a third heat exchange module 53 that are interconnected. The first heat exchange module 51 is connected to the heat dissipation module 4 through the air-conditioning system, the second heat exchange module 52 is connected to the heat dissipation module 4 through the battery system, and the third heat exchange module 53 is connected to the heat dissipation module through the electric drive cooling system. The first heat exchange module 51 is used to cool the refrigerant and transfer part of the heat to the second heat exchange module 52 and the third heat exchange module 53 respectively;

[0035] The heat dissipation module 4 is respectively connected to the first heat exchange module 51, the second heat exchange module 52, and the third heat exchange module 53 for dissipating heat. After the refrigerant releases heat once through the heat exchange module 5, it enters the heat dissipation module 4 through the air-conditioning system for secondary heat release. The cooled refrigerant flows into the air-conditioning system and reaches the battery cooler 2 through the air-conditioning system for refrigeration.

[0036] Exemplarily, the battery cooler 2, the compressor 3, the heat dissipation module 4, and the heat exchange module 5 can be integrated into the vehicle's air-conditioning system. The heat exchange module 5 can adopt a water-cooled condenser / evaporator, which realizes the heat release function through the condensation device and the heat absorption function through the evaporation device. The air-conditioning system, the battery system, and the electric drive cooling system can all be closed pipelines connecting various components. The refrigerant circulates in the circulation channel. The refrigerant has two forms: gaseous refrigerant and liquid refrigerant. When the refrigerant changes from gaseous to liquid, it can release heat, and when the refrigerant changes from liquid to gaseous, it can absorb heat. For the type and amount of the refrigerant, those skilled in the art can set according to actual needs, and the present invention does not limit this.

[0037] In practical applications, when it is necessary to cool the battery, the battery cooler 2 absorbs the battery heat and then enters the air conditioning system. After being compressed by the compressor 3, the refrigerant forms a high-temperature and high-pressure gaseous refrigerant. After the gaseous refrigerant releases heat once through the heat exchange module 5, the gaseous refrigerant condenses and transforms into a liquid refrigerant, and part of the heat is transferred to the second heat exchange module 52 and the third heat exchange module 53 through the first heat exchange module 51, so as to assist in heat dissipation through the battery system and the electric drive cooling system. The remaining heat carried by the liquid refrigerant is released through secondary condensation by the outdoor heat exchanger 4. After all the heat is released, the liquid refrigerant reaches the battery cooler 2 through the air conditioning system, forming a cycle of battery cooling, thereby realizing the heat dissipation of the battery. The above technical solution realizes the heat dissipation of the battery through three circulation channels, which can improve the heat dissipation efficiency of the battery in the high-temperature working state, avoid the fire risk caused by too high battery temperature, and improve the service life of the battery.

[0038] Figure 2 This is a structural diagram of another vehicle thermal management system provided by an embodiment of the present invention. In some embodiments, the air conditioning system can form the air conditioning system A1, the battery system can form the battery system A2, and the electric drive cooling system can form the motor system A3. The heat dissipation module 4 can include an outdoor heat exchanger 41, a first low-temperature radiator 42, and a second low-temperature radiator 43. Among them, the outdoor heat exchanger 41 is connected to the first heat exchange module 51 through the air conditioning system, and can realize the functions of heat release and heat absorption. The first low-temperature radiator 42 is connected to the second heat exchange module 52 through the battery system, and the second low-temperature radiator 43 is connected to the third heat exchange module 53 through the electric drive cooling system. Both the first low-temperature radiator 42 and the second low-temperature radiator 43 are used for dissipating heat.

[0039] The thermal management system further includes a plurality of valves, a plurality of connecting pipes, and a controller; the plurality of valves and the plurality of connecting pipes are respectively arranged in the air conditioning system, the battery system, and the electric drive cooling system, and are used to realize the connection between the corresponding components in the thermal management system. Among them, the valves can include one or more of a three-way valve, a four-way valve, an expansion valve, and a stop valve; the connecting pipes can include one or more of a two-way pipe, a three-way pipe, and a four-way pipe. It should be noted that the three-way valve, the four-way valve, the three-way pipe, and the four-way pipe are all in the form of three inlets and one outlet, and can respectively realize functions such as ab connection, ac connection, ad connection, abc connection, abd connection, acd connection, and abcd non-connection, where a is the long-through port.

[0040] The controller is used to couple one or more circulation channels between the air conditioning system, the battery system, and the electric drive cooling system by controlling the connection of the plurality of valves and the plurality of connecting pipes, so that the thermal management system can be switched between the motor cooling mode, the battery cooling mode, the battery heating mode, the occupant compartment heating mode, and the occupant compartment cooling mode.

[0041] In an alternative embodiment, the air conditioning system may include a thermal expansion valve 11, a flow control valve 12, a first electronic expansion valve 13, a second electronic expansion valve 14, a first three-way pipe 15, a second three-way pipe 16, a third three-way pipe 17, a fourth three-way pipe 18, a fifth three-way pipe 19, and a three-way valve 20; the battery system may include a first four-way valve 21, a sixth three-way pipe 22, a seventh three-way pipe 23, and a four-way pipe 24; the electric drive cooling system may include a second four-way valve (25) and a third four-way valve (26).

[0042] One end of the thermal expansion valve 11 is connected to the indoor evaporator 9, and the other end of the thermal expansion valve 11 is connected to the first end of the first three-way pipe 15; the thermal expansion valve 11 is used to expand the refrigerant.

[0043] One end of the flow control valve 12 is connected to the second end of the first three-way pipe 15, and the other end of the flow control valve 12 is connected to the third end of the second three-way pipe 16; the flow control valve 12 is used to control the flow rate and velocity of the refrigerant in the circulation channel.

[0044] One end of the first electronic expansion valve 13 is connected to the battery cooler 2, and the other end of the first electronic expansion valve 13 is connected to the third end of the third three-way pipe 17.

[0045] One end of the second electronic expansion valve 14 is connected to the indoor heat exchanger 10, and the other end of the second electronic expansion valve 14 is connected to the first end of the second three-way pipe 16.

[0046] The third end of the first three-way pipe 15 is connected to the first end of the third three-way pipe 17.

[0047] The second end of the second three-way pipe 16 is connected to the heat exchange module 5.

[0048] The second end of the third three-way pipe 17 is connected to the outdoor heat exchanger 41.

[0049] The first end of the fourth three-way pipe 18 is connected to the gas-liquid separator 8, the second end of the fourth three-way pipe 18 is connected to the first end of the fifth three-way pipe 19, and the third end of the fourth three-way pipe 18 is connected to the second end of the three-way valve 20.

[0050] The second end of the fifth three-way pipe 19 is connected to the indoor evaporator 9, and the third end of the fifth three-way pipe 19 is connected to the battery cooler 2.

[0051] The first end of the three-way valve 20 is connected to the heat exchange module 5, and the third end of the three-way valve 20 is connected to the outdoor heat exchanger 41.

[0052] The first end of the first four-way valve 21 is connected to the battery cooler 2, the second end of the first four-way valve 21 is connected to the fourth end of the four-way pipe 24, the third end of the first four-way valve 21 is connected to the second end of the seventh three-way pipe 23, and the fourth end of the first four-way valve 21 is connected to the fourth end of the second four-way valve 25.

[0053] The first end of the sixth three-way pipe 22 is connected to the electronic water pump 7, the second end of the sixth three-way pipe 22 is connected to the third end of the four-way pipe 24, and the third end of the sixth three-way pipe 22 is connected to the third end of the seventh three-way pipe 23.

[0054] The first end of the seventh three-way pipe 23 is connected to the heat exchange module 5.

[0055] The first end of the four-way pipe 24 is connected to the battery 1 through the electronic water pump 7, and the second end of the four-way pipe 24 is connected to the second end of the third four-way valve 26.

[0056] The first end of the second four-way valve 25 is connected to the heat exchange module 5, the second end of the second four-way valve 25 is connected to the fourth end of the third four-way valve 26, and the third end of the second four-way valve 25 is connected to the outdoor heat exchanger 41.

[0057] The first end of the third four-way valve 26 is connected to the motor 6 through the electronic water pump 7, and the third end of the third four-way valve 26 is connected to the outdoor heat exchanger 41.

[0058] It should be noted that the first end, second end, third end, and fourth end of the above three-way valve and four-way valve respectively correspond to the four inlets and outlets a, b, c, and d, where the a port is a long-through port.

[0059] In some embodiments, when cooling the battery 1, the second end of the three-way valve 20 is disconnected, and the first end and the third end of the three-way valve 20 are conducted; the second end and the fourth end of the second four-way valve 25 are disconnected, and the first end and the third end of the second four-way valve 25 are conducted; after the refrigerant absorbs the heat of the battery 1, it is transformed into gaseous refrigerant. The gaseous refrigerant sequentially passes through the fifth three-way pipe 19, the fourth three-way pipe 18, the gas-liquid separator 8 and the compressor 3. After the refrigerant in the compressor 3 absorbs heat, it compresses the gaseous refrigerant. The gaseous refrigerant sequentially passes through the second electronic expansion valve 14, the second three-way pipe 16 and the heat exchange module 5; the heat exchange module 5 cools the gaseous refrigerant. The first heat exchange module 51 transmits part of the heat to the second heat exchange module 52 and the third heat exchange module 53 respectively. After the gaseous refrigerant is cooled, it is transformed into liquid refrigerant. The liquid refrigerant flows in from the first end of the three-way valve 20, is transmitted from the third end of the three-way valve 20 to the outdoor heat exchanger 41, and dissipates heat through the outdoor heat exchanger 41; coolants are provided on both the battery system and the electric drive cooling system. The coolant circulates in the battery system and the electric drive cooling system respectively through the electronic water pump 7. After the coolant absorbs the heat of the second heat exchange module 52 and the third heat exchange module 53, it dissipates heat through the outdoor heat exchanger 41; after the liquid refrigerant flows out of the heat exchange module 5, it sequentially passes through the third three-way pipe 17 and the first electronic expansion valve 13, expands through the first electronic expansion valve 13, and the expanded refrigerant enters the battery cooler 2 to absorb the battery heat again, thereby realizing the cyclic battery heat dissipation, improving the heat dissipation efficiency of the battery in the high-temperature working state, avoiding the fire risk caused by the too high battery temperature, and improving the service life of the battery.

[0060] In some embodiments, when cooling the motor 6, the second end and the fourth end of the second four-way valve 25 are disconnected, the first end and the third end of the second four-way valve 25 are conducted, the second end and the fourth end of the third four-way valve 26 are disconnected, and the first end and the third end of the third four-way valve 26 are conducted; the electronic water pump 7 is used to drive the coolant to circulate in the electric drive cooling system. After the coolant absorbs the heat of the motor 6, it flows in from the first end of the third four-way valve 26, is transmitted from the third end of the third four-way valve 26 to the outdoor heat exchanger 41, and the cooled coolant flows in from the third end of the second four-way valve 25, flows out from the first end of the second four-way valve 25, and returns to the electronic water pump 7, thereby realizing the cyclic heat dissipation of the motor 6 and the high-voltage component 28.

[0061] In some embodiments, when cooling the passenger compartment of the vehicle, the second end of the three-way valve 20 is disconnected, and the first end and the third end of the three-way valve 20 are connected; the first four-way valve 21, the second four-way valve 25 and the third four-way valve 26 are all disconnected; the compressor 3 compresses the refrigerant and converts it into a gaseous refrigerant, which passes through the second three-way pipe 16 and the heat exchange module 5 in sequence, and the heat exchange module 5 cools the gaseous refrigerant. The first heat exchange module 51 transfers part of the heat to the second heat exchange module 52 and the third heat exchange module 53 respectively. After cooling, the gaseous refrigerant is converted into a liquid refrigerant, and the liquid refrigerant flows in from the first end of the three-way valve 20, and is transferred from the third end of the three-way valve 20 to the outdoor heat exchanger 41, and heat is dissipated through the outdoor heat exchanger 41; after the liquid refrigerant flows out of the outdoor heat exchanger 41, it passes through the third three-way pipe 17, the first three-way pipe 15, the thermal expansion valve 11, the indoor evaporator 9, the fifth three-way pipe 19, the fourth three-way pipe 18, the gas-liquid separator 8 in sequence. and compressor 3; after the liquid refrigerant expands through the thermal expansion valve 11, it evaporates and absorbs heat in the indoor evaporator 9, thereby cooling the passenger compartment.

[0062] In some embodiments, when the passenger compartment of the vehicle is heated, the second end of the three-way valve 20 is disconnected, and the first and third ends of the three-way valve 20 are connected; the first four-way valve 21, the second four-way valve 25 and the third four-way valve 26 are all disconnected; the compressor 3 compresses the refrigerant and converts it into a gaseous refrigerant, which is converted into a liquid refrigerant after passing through the indoor heat exchanger 10. During the condensation process, the heat is dissipated to heat the passenger compartment to achieve heating of the passenger compartment; the condensed liquid refrigerant enters the second electronic expansion valve 14 to expand, and the expanded liquid refrigerant passes through the second three-way pipe 16, the heat exchange module 5 and the outdoor heat exchanger 41 in turn. During the heating of the passenger compartment, the heat exchange module 5 does not perform the heat dissipation function; the liquid refrigerant is converted into a gaseous refrigerant after evaporation in the outdoor heat exchanger 41. During the evaporation process, the refrigerant absorbs ambient heat and transfers the heat to the passenger compartment to achieve heating of the passenger compartment.

[0063] In some embodiments, when heating the passenger compartment of the vehicle, the third end of the three-way valve 20 is disconnected, the first end and the second end of the three-way valve 20 are conducted, the third end and the fourth end of the second four-way valve 25 are disconnected, the first end and the second end of the second four-way valve 25 are conducted, the second end and the third end of the third four-way valve 26 are disconnected, and the first end and the fourth end of the third four-way valve 26 are conducted; the electronic water pump 7 is used to drive the coolant to circulate in the electric drive cooling system. After the coolant absorbs the heat of the motor 6, the heat is transferred to the first heat exchange module 51 through the third heat exchange module 53; after the compressor 3 compresses the refrigerant, it is converted into gaseous refrigerant. The gaseous refrigerant is converted into liquid refrigerant after passing through the indoor heat exchanger 10. Heat is dissipated during the condensation process to raise the temperature of the passenger compartment to achieve heating of the passenger compartment; the condensed liquid refrigerant enters the second electronic expansion valve 14 for expansion. The expanded liquid refrigerant sequentially passes through the second three-way pipe 16 and the heat exchange module 5. The evaporator in the heat exchange module 5 converts the liquid refrigerant into gaseous refrigerant, absorbs the heat in the first heat exchange module 51, and transfers the heat to the passenger compartment to achieve heating of the passenger compartment.

[0064] In some embodiments, the thermal management system further includes a temperature sensor and a battery heater 27. The temperature sensor is used to detect the temperature of the battery 1; when the temperature of the battery 1 is lower than a preset temperature, the controller activates the battery heating mode, and the battery heater 27 heats the battery 1. Exemplarily, the battery heater 27 can adopt a positive temperature coefficient electric heater. Those skilled in the art can set the preset temperature according to actual needs, and the present invention does not limit the specific value of the preset temperature.

[0065] When the controller activates the battery heating mode, if the vehicle is in a driving state, a part of the battery system and a part of the electric drive cooling system are coupled to form a battery heating system. Specifically, when the controller activates the battery heating mode, the three-way valve 20 is disconnected, the third end of the first four-way valve 21 is disconnected, and the first end, the second end, and the fourth end of the first four-way valve 21 are conducted. The second end and the third end of the second four-way valve 25 are disconnected, the first end and the fourth end of the second four-way valve 25 are conducted, the third end and the fourth end of the third four-way valve 26 are disconnected, and the first end and the second end of the third four-way valve 26 are conducted. The electronic water pump 7 drives the coolant to circulate in the battery heating system. After the coolant absorbs the heat of the motor 6, it heats the battery 1. Heating the battery 1 with the heat generated by the motor 6 can reduce the power consumption of the battery heater 27, thereby improving the energy utilization rate of the vehicle's entire vehicle.

[0066] It should be noted that on the basis of enabling the thermal management system to switch between the motor cooling mode, the battery cooling mode, the battery heating mode, the occupant compartment heating mode, and the occupant compartment cooling mode, those skilled in the art can adjust the installation positions of multiple components in the above thermal management system according to actual needs. At the same time, this embodiment does not make requirements on the types and control signals of the flow control valve, the three-way valve, and the four-way valve. The four-way valve can use other valve body combinations to achieve function substitution; this embodiment does not make specific requirements on the application of the four-way pipe and the three-way pipe. Two adjacent three-way pipes can be combined into a four-way pipe, or individual pipelines or even all pipelines can be directly integrated and designed, so as to omit some three-way pipes; the number and position of the electronic water pump can be adjusted according to actual needs. The drive motor and high-voltage components can be replaced with front and rear positions, or can be changed to a parallel connection. If components such as the controller have cooling requirements, they can be inserted into any position in this solution according to specific heat exchange requirements while maintaining the existing functional solutions; this embodiment does not make specific requirements on the position and number of the overflow tank, does not make requirements on the series and parallel relationships of pipelines and components, and does not make requirements on the number of water inlets and outlets.

[0067] It should be noted that for the above embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, some steps can be carried out in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0068] On the other hand, an embodiment of the present invention also provides a vehicle, on which the above thermal management system is provided. By adopting the technical solution of the present invention, when it is necessary to cool the battery, the battery cooler 2 absorbs the battery heat and then enters the air-conditioning system. After the refrigerant is compressed by the compressor 3, a high-temperature and high-pressure gaseous refrigerant is formed. After the gaseous refrigerant releases heat once through the heat exchange module 5, the gaseous refrigerant condenses and turns into a liquid refrigerant, and part of the heat is transmitted to the second heat exchange module 52 and the third heat exchange module 53 through the first heat exchange module 51, so as to assist in heat dissipation through the battery system and the electric drive cooling system. The remaining heat carried by the liquid refrigerant is released by secondary condensation through the outdoor heat exchanger 4. After all the heat is released, the liquid refrigerant reaches the battery cooler 2 through the air-conditioning system, forming a cycle of battery cooling, thereby realizing the heat dissipation of the battery. In the above technical solution, the heat dissipation of the battery is realized through three circulation channels, which can improve the heat dissipation efficiency of the battery in the high-temperature working state, avoid the fire risk caused by too high battery temperature, and improve the service life of the battery.

[0069] Each embodiment in this specification is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the embodiments, reference can be made to each other. Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0070] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0071] The above has introduced in detail a vehicle thermal management system and a vehicle provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A thermal management system for a vehicle, characterized in that, the thermal management system includes: an air conditioning system, a battery system, an electric drive cooling system, a battery cooler (2), a heat dissipation module (4) and a heat exchange module (5); the battery cooler (2) is respectively connected to the air conditioning system and the battery system; the heat exchange module (5) is respectively connected to the air conditioning system, the battery system and the electric drive cooling system; the heat dissipation module (4) is respectively connected to the air conditioning system, the battery system and the electric drive cooling system; the heat exchange module (5) includes a first heat exchange module (51), a second heat exchange module (52) and a third heat exchange module (53) that are interconnected. The first heat exchange module (51) is in communication with the air conditioning system, the second heat exchange module (52) is in communication with the battery system, and the third heat exchange module (53) is in communication with the electric drive cooling system. The heat exchange module (5) is used to achieve heat communication between the air conditioning system, the battery system and the electric drive cooling system; the air conditioning system includes a compressor; the battery system includes a battery; when cooling the battery, the battery heat enters the compressor through the battery cooler. The refrigerant in the compressor absorbs heat and forms a gaseous refrigerant. The gaseous refrigerant releases heat through the heat exchange module and becomes a liquid refrigerant. The liquid refrigerant releases heat again through the heat dissipation module and becomes a cooling refrigerant. The cooling refrigerant flows into the battery cooler through the air conditioning system for refrigeration.

2. The thermal management system according to claim 1, characterized in that, the thermal management system further includes a plurality of valves, a plurality of electronic water pumps and a controller; the plurality of valves are respectively arranged in the air conditioning system, the battery system and the electric drive cooling system, and are used to achieve the connection between the corresponding systems in the thermal management system; the controller is used to couple one or more systems among the air conditioning system, the battery system and the electric drive cooling system by controlling the plurality of valves, so that the thermal management system can switch between a motor cooling mode, a battery cooling mode, a battery heating mode, an occupant compartment heating mode, and an occupant compartment cooling mode.

3. The thermal management system according to claim 2, characterized in that, the electric drive cooling system includes: a motor (6) and a high-voltage component (28), and the motor (6), the electronic water pump (7), the high-voltage component, the heat dissipation module (4) and the heat exchange module (5) are connected in sequence; when the controller starts the motor cooling mode, the electronic water pump (7) is used to drive the coolant to flow through the electric drive cooling system. After the coolant absorbs the heat of the motor (6), it enters the heat dissipation module (4) through the electric drive cooling system for heat release.

4. The thermal management system according to claim 2, characterized in that, the air conditioning system includes: a gas-liquid separator (8) and an indoor evaporator (9); When the controller activates the passenger compartment cooling mode, after the compressor (3) compresses the refrigerant, it is transformed into gaseous refrigerant. The gaseous refrigerant enters the heat exchange module (5), and the heat exchange module (5) cools the gaseous refrigerant. The first heat exchange module (51) transfers part of the heat to the second heat exchange module (52) and the third heat exchange module (53) respectively. After being cooled, the gaseous refrigerant is transformed into liquid refrigerant and dissipates heat through the heat dissipation module (4). After the liquid refrigerant flows out of the heat dissipation module (4), it passes through the gas-liquid separator (8) and the indoor evaporator (9) in sequence. The liquid refrigerant evaporates and absorbs heat in the indoor evaporator (9) to achieve the cooling of the passenger compartment.

5. The thermal management system according to claim 2, characterized in that, the air conditioning system further comprises: a gas-liquid separator (8) and an indoor heat exchanger (10); when the controller activates the passenger compartment heating mode, after the compressor (3) compresses the refrigerant, it is transformed into gaseous refrigerant. The gaseous refrigerant is transformed into liquid refrigerant after passing through the indoor heat exchanger (10). Heat is dissipated during the condensation process to raise the temperature of the passenger compartment, so as to achieve the heating of the passenger compartment; the condensed liquid refrigerant enters the heat dissipation module (4). The liquid refrigerant is transformed into gaseous refrigerant after evaporation in the heat dissipation module (4). The refrigerant absorbs ambient heat during the evaporation process and transfers the heat to the passenger compartment.

6. The thermal management system according to claim 2, characterized in that, the thermal management system further comprises: a gas-liquid separator (8) and an indoor heat exchanger (10); when the controller activates the passenger compartment heating mode, the electronic water pump (7) is used to drive the coolant to circulate in the electric drive cooling system. After the coolant absorbs the heat of the motor (6), it transfers the heat to the first heat exchange module (51) through the third heat exchange module (53); after the compressor (3) compresses the refrigerant, it is transformed into gaseous refrigerant. The gaseous refrigerant is transformed into liquid refrigerant after passing through the indoor heat exchanger (10). Heat is dissipated during the condensation process to raise the temperature of the passenger compartment, so as to achieve the heating of the passenger compartment; the condensed liquid refrigerant enters the heat exchange module (5) through the air conditioning system. The evaporator in the heat exchange module (5) transforms the liquid refrigerant into gaseous refrigerant, absorbs the heat in the first heat exchange module (51), and transfers the heat to the passenger compartment.

7. The thermal management system according to claim 3, characterized in that, the thermal management system further comprises a temperature sensor and a battery heater (27). The temperature sensor is used to detect the temperature of the battery (1); when the temperature of the battery (1) is lower than the preset temperature, the controller activates the battery heating mode, and the battery heater (27) heats the battery (1).

8. The thermal management system according to claim 7, characterized in that, When the controller activates the battery heating mode, if the vehicle is in a driving state, a part of the battery system and a part of the electric drive cooling system are coupled to form a battery heating system. The electronic water pump (7) drives the coolant to circulate in the battery heating system. After the coolant absorbs the heat of the motor (6), it heats the battery (1).

9. The thermal management system according to claim 1, wherein, the heat dissipation module (4) includes an outdoor heat exchanger and two low-temperature radiators. The outdoor heat exchanger is connected to the first heat exchange module (51) through the air conditioning system, and the two low-temperature radiators are respectively connected to the second heat exchange module (52) and the third heat exchange module (53).

10. A vehicle, wherein, the vehicle is provided with the thermal management system according to any one of claims 1-9.

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