Thermal management system of vehicle and vehicle

Abstract

The utility model discloses a thermal management system of a vehicle and the vehicle, and belongs to the technical field of automobiles. The heat management system comprises a low-temperature radiator, an inlet and an outlet of the low-temperature radiator are communicated with a first four-way pipe fitting and a first three-way pipe fitting respectively, and the first three-way pipe fitting is communicated with a first three-way valve; one end of the first pipeline communicates with the first three-way valve, the other end of the first pipeline communicates with the first four-way pipe fitting, and the first pipeline is provided with a first water pump and an electric drive assembly; one end of the second pipeline is communicated with the first three-way valve, the other end of the second pipeline is communicated with the first four-way pipe fitting, and a battery pack and a second water pump are arranged on the second pipeline; one end of the third pipeline is communicated with the first three-way pipe fitting, the other end of the third pipeline is communicated with the first four-way pipe fitting, and a third water pump, a condenser and a heating piece are arranged on the third pipeline. According to the utility model, the independence of the electric drive assembly, the battery pack and the condenser is higher, the temperature adjusting precision is improved, the heat distribution is improved, the cooling effect of the system is improved, and the cruising ability of the vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a vehicle thermal management system and a vehicle. Background Technology

[0002] In related technologies, automobiles are typically equipped with thermal management systems to ensure that the temperature of the battery, electric drive system, and passenger compartment is maintained within the optimal operating range, preventing overheating or underheating from affecting vehicle performance and safety. Especially with the increasing popularity of electric and hybrid vehicles, the design of thermal management systems has become particularly important, involving the efficient cooling and temperature control of the battery, electric drive system, and other critical components.

[0003] However, the related thermal management systems still have certain limitations in cooling efficiency. The cooling requirements of battery systems, electric drive systems, and other related cooling components (such as water-cooled condensers) are usually independent, but in related designs, the cooling systems of these components may overlap excessively, leading to a decrease in the overall efficiency of the thermal management system. Traditional designs use a unified cooling cycle or piping layout for temperature control, which may result in inaccurate temperature regulation and uneven heat distribution, thus affecting the cooling performance of each system. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a vehicle thermal management system that improves the accuracy and uniformity of temperature regulation and enhances cooling efficiency.

[0005] A vehicle thermal management system according to an embodiment of the present invention includes: a low-temperature radiator, the inlet and outlet of which are respectively connected to a first four-way pipe and a first three-way pipe, the first three-way pipe being connected to a first three-way valve; a first pipeline, one end of which is connected to the first three-way valve and the other end of which is connected to the first four-way pipe, the first pipeline being provided with a first water pump and an electric drive assembly; a second pipeline, one end of which is connected to the first three-way valve and the other end of which is connected to the first four-way pipe, the second pipeline being provided with a battery pack and a second water pump; and a third pipeline, one end of which is connected to the first three-way pipe and the other end of which is connected to the first four-way pipe, the third pipeline being provided with a third water pump, a condenser, and a heating element.

[0006] According to the vehicle thermal management system of this utility model embodiment, a parallel electric drive assembly, battery pack and condenser are set up. Any one of the three can work alone or multiple ones can work at the same time, thereby making the electric drive assembly, battery pack and condenser more independent, improving temperature regulation accuracy, improving heat distribution, improving the cooling effect of the system and improving the vehicle's range.

[0007] In some embodiments, the battery pack is connected in parallel with a battery heat exchanger, and the thermal management system further includes: a fourth pipeline, the two ends of which are respectively connected to the inlet and outlet of the battery heat exchanger; the fourth pipeline is provided with a second four-way fitting, a gas-liquid separator, a compressor, a fourth three-way fitting, and a first expansion valve; the condenser is located on the fourth pipeline, and the fourth three-way fitting is connected to the second four-way fitting through the second expansion valve.

[0008] In some embodiments, a fifth three-way fitting is provided between the condenser and the first expansion valve, and a fifth pipeline is provided between the fifth three-way fitting and the second four-way fitting. The fifth pipeline is provided with a third expansion valve, an evaporator, and a first one-way valve. The third pipeline is provided with a four-way valve and a sixth three-way fitting. The four-way valve is connected to the sixth three-way fitting through a heater core and a second one-way valve. A seventh three-way fitting is provided between the first three-way valve and the battery pack. The seventh three-way fitting is connected to the four-way valve.

[0009] In some embodiments, the four-way valve is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the thermal management system is provided with a battery pack heating circuit, the fourth valve port is connected to the second valve port, and the battery pack heating circuit is provided with the condenser, the heating element, the battery pack and the third water pump.

[0010] In some embodiments, a second three-way valve is provided between the second water pump and the first four-way pipe fitting, an eighth three-way pipe fitting is provided between the first three-way pipe fitting and the sixth three-way pipe fitting to connect the second three-way valve, and a third three-way pipe fitting is provided between the first three-way valve and the first water pump. The thermal management system has a first mode. When the thermal management system is in the first mode, the first three-way valve is switched to connect the first three-way pipe fitting to the third three-way pipe fitting, the second three-way valve is switched to connect the battery heat exchanger to the second water pump, and the fourth valve port is connected to the first valve port and the third valve port respectively.

[0011] In some embodiments, the first three-way valve has a first port, a second port, and a third port. The first port is connected to the first three-way fitting, the second port is connected to the third three-way fitting, and the third port is connected to the battery heat exchanger. The thermal management system has a second mode. The thermal management system is in the second mode. The second port is connected to the first port and the second port is connected to the third port. The second three-way valve is switched to the first four-way fitting to connect to the second water pump. The fourth valve port is connected to the first valve port and the third valve port respectively.

[0012] In some embodiments, the first three-way valve has a first port, a second port, and a third port. The first port is connected to the first three-way fitting, the second port is connected to the third three-way fitting, and the third port is connected to the battery heat exchanger. The thermal management system has a third mode, and the thermal management system is in the third mode. The second port is connected to the first port, the second port is connected to the third port, the second three-way valve is switched to the second water pump connected to the eighth three-way fitting, and the fourth valve port is connected to the second valve port and the third valve port respectively.

[0013] In some embodiments, the thermal management system has a fourth mode, in which the thermal management system is in the fourth mode, the first three-way valve switches to the battery heat exchanger to connect to the third three-way fitting, the second three-way valve switches to the second water pump to connect to the eighth three-way fitting, and the fourth valve port is connected to the second valve port and the third valve port respectively.

[0014] In some embodiments, the thermal management system has a fifth mode, in which the first three-way valve switches to connect the battery heat exchanger to the third three-way fitting, the second three-way valve switches to connect the second water pump to the battery heat exchanger, and the fourth valve port connects to the third valve port.

[0015] The vehicle according to an embodiment of the present invention includes the thermal management system described above.

[0016] According to the vehicle of this utility model embodiment, an electric drive assembly, a battery pack, and a condenser are arranged in parallel. Any one of the three can work alone or multiple ones can work simultaneously, thereby making the electric drive assembly, battery pack, and condenser more independent, improving temperature regulation accuracy, improving heat distribution, improving the cooling effect of the system, and improving the vehicle's range.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the thermal management system in the first mode in an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the thermal management system in the second mode in an embodiment of this utility model;

[0021] Figure 3This is a schematic diagram of the thermal management system in the third mode in this embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the thermal management system in the fourth mode in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the thermal management system in the fifth mode in this embodiment of the present invention;

[0024] Figure 6 This is an architectural diagram of the thermal management system in an embodiment of this utility model.

[0025] Figure label:

[0026] 100. Thermal Management System; 1. Low-Temperature Radiator; 2. First Three-Way Valve; 3. First Water Pump; 4. Electric Drive Assembly; 5. First Temperature Sensor; 6. Third Check Valve; 7. Fourth Check Valve; 8. Battery Heat Exchanger; 9. Battery Pack; 10. Second Water Pump; 11. Second Three-Way Valve; 12. Four-Way Valve; 13. Second Expansion Valve; 14. First Expansion Valve; 15. First Check Valve; 16. Gas-Liquid Separator; 17. First Temperature and Pressure Sensor; 18. Compressor; 19. Second Temperature Sensor; 20. Condenser; 21. Second Temperature and Pressure Sensor; 22. Third Expansion Valve; 23. Blower; 24. Steam... 25. Heater core; 26. Second check valve; 27. Third water pump; 28. Third temperature sensor; 29. ​​Heating element; 30. Overflow tank; 31. Fifth check valve; 51. First tee fitting; 52. Second tee fitting; 53. Third tee fitting; 54. Fourth tee fitting; 55. Fifth tee fitting; 56. Sixth tee fitting; 57. Seventh tee fitting; 58. Eighth tee fitting; 61. First four-way fitting; 62. Second four-way fitting; a. First valve port; b. Second valve port; c. Third valve port; d. Fourth valve port; e. First port; f. Second port; g. Third port. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0031] The following is for reference. Figures 1-6 A thermal management system 100 for a vehicle according to an embodiment of the present invention is described.

[0032] Reference Figures 1 to 5 According to one embodiment of the present invention, a vehicle thermal management system 100 includes: a low-temperature radiator 1, a first pipeline, a second pipeline, and a third pipeline.

[0033] The inlet and outlet of the low-temperature radiator 1 are respectively connected to a first tee fitting 51 and a first four-way fitting 61. The first tee fitting 51 is connected to a first tee valve 2. One end of the first pipeline is connected to the first tee valve 2, and the other end is connected to the first four-way fitting 61. The first pipeline is equipped with a first water pump 3 and an electric drive assembly 4. One end of the second pipeline is connected to the first tee valve 2, and the other end is connected to the first four-way fitting 61. The second pipeline is equipped with a battery pack 9 and a second water pump 10. One end of the third pipeline is connected to the first tee fitting 51, and the other end is connected to the first four-way fitting 61. The third pipeline is equipped with a third water pump 27, a condenser 20, and a heating element 29.

[0034] The low-temperature radiator 1 has an inlet and an outlet, one of which is connected to a first tee fitting 51, and the other is connected to a first four-way fitting 61. The heat exchange medium in the thermal management system 100 flows through the electric drive assembly 4, thereby adjusting the temperature of the electric drive assembly 4. The heat exchange medium in the thermal management system 100 flows through the battery pack 9, thereby adjusting the temperature of the battery pack 9. The heat exchange medium in the thermal management system 100 flows through the condenser 20, thereby adjusting the temperature of the condenser 20.

[0035] In related technologies, automobiles are typically equipped with thermal management systems to ensure that the temperature of the battery, electric drive system, and passenger compartment is maintained within the optimal operating range, preventing overheating or underheating from affecting vehicle performance and safety. Especially with the increasing popularity of electric and hybrid vehicles, the design of thermal management systems has become particularly important, involving the efficient cooling and temperature control of the battery, electric drive system, and other critical components.

[0036] However, the related thermal management systems still have certain limitations in cooling efficiency. The cooling requirements of battery systems, electric drive systems, and other related cooling components (such as water-cooled condensers) are usually independent, but in related designs, the cooling systems of these components may overlap excessively, leading to a decrease in the overall efficiency of the thermal management system. Traditional designs use a unified cooling cycle or piping layout for temperature control, which may result in inaccurate temperature regulation and uneven heat distribution, thus affecting the cooling performance of each system.

[0037] Specifically, an inadequate cooling system, often manifesting as insufficient cooling efficiency, leads to increased temperatures in the battery and electric drive system, consequently affecting their charging and discharging performance and driving experience. Furthermore, excessively overlapping cooling demands also increase system energy consumption, particularly under high or low temperature conditions, potentially significantly impacting the vehicle's range.

[0038] Specifically, heating element 29 is a water heating element, such as a water heating PTC (Positive Temperature Coefficient), which is an electric heating device that transfers heat through liquid circulation.

[0039] In this invention, the electric drive assembly 4, the battery pack 9, and the condenser 20 are connected in parallel. Any one of the three can work alone or multiple ones can work simultaneously, thereby making the electric drive assembly 4, the battery pack 9, and the condenser 20 more independent, improving temperature regulation accuracy, improving heat distribution, improving the cooling effect of the system, and improving the vehicle's range.

[0040] Specifically, condenser 20 is a water-cooled condenser for ease of use.

[0041] According to the thermal management system 100 of this utility model embodiment, a parallel electric drive assembly 4, a battery pack 9, and a condenser 20 are provided. Any one of the three can work alone or multiple ones can work simultaneously, thereby making the electric drive assembly 4, battery pack 9, and condenser 20 more independent, improving temperature regulation accuracy, improving heat distribution, improving the cooling effect of the system, and improving the vehicle's range.

[0042] Reference Figures 1 to 5 In some embodiments, a second three-way pipe 52 is provided between the low-temperature radiator 1 and the first four-way pipe 61, a third three-way pipe 53 is provided between the first three-way valve 2 and the first water pump 3, and an overflow tank 30 is provided between the third three-way pipe 53 and the second three-way pipe 52.

[0043] Among them, a second three-way pipe 52 is provided between the low-temperature radiator 1 and the first four-way pipe 61, and a third three-way pipe 53 is provided between the first three-way valve 2 and the first water pump 3. The second three-way pipe 52 is connected to the third three-way pipe 53 through a pipe, and an overflow tank 30 is provided on the pipe.

[0044] In the above scheme, by setting a second tee fitting 52 and a third tee fitting 53, and setting an overflow tank 30 between them, the heat exchange medium in the overflow tank 30 enters the pipeline at the initial stage of the heat management system 100 startup. It can be understood that during the operation of the heat management system 100, the heat exchange medium will also be lost, and the overflow tank 30 can also replenish the heat exchange medium. The overflow tank 30 facilitates the connection between the second tee fitting 52 and the third tee fitting 53, which facilitates control.

[0045] Reference Figures 1 to 5 In some embodiments, the battery pack 9 is connected in parallel with the battery heat exchanger 8, and the thermal management system 100 further includes: a fourth pipeline, the two ends of which are respectively connected to the inlet and outlet of the battery heat exchanger 8. The fourth pipeline is provided with a second four-way fitting 62, a gas-liquid separator 16, a compressor 18, a fourth three-way fitting 54, and a first expansion valve 14. The condenser 20 is located on the fourth pipeline, and the fourth three-way fitting 54 is connected to the second four-way fitting 62 through the second expansion valve 13.

[0046] Among them, the battery heat exchanger 8 is a Chiller, which is a heat exchange device between the refrigerant circuit (air conditioning system) and the battery / motor coolant circuit. Through the heat absorption effect of refrigerant evaporation, the heat in the coolant is transferred to the air conditioning system, thereby achieving efficient cooling of components such as batteries and motors.

[0047] The first pipeline is equipped with a second four-way fitting 62, a gas-liquid separator 16, a compressor 18, a fourth three-way fitting 54, a condenser 20, and a first expansion valve 14. The heat exchange medium flows through the second four-way fitting 62, the gas-liquid separator 16, the compressor 18, the fourth three-way fitting 54, the condenser 20, and the first expansion valve 14.

[0048] In the above scheme, by setting the heat exchange medium to flow through the second four-way pipe fitting 62, the gas-liquid separator 16, the compressor 18, the fourth three-way pipe fitting 54, the condenser 20, and the first expansion valve 14, the heat exchange medium flows through the condenser 20, giving full play to the effect of the condenser 20. The overall structure is clearer and easier to control.

[0049] Specifically, the second expansion valve 13 is a large-diameter expansion valve.

[0050] In some specific embodiments, the first expansion valve 14 is an electronic expansion valve.

[0051] Reference Figures 1 to 5 In some embodiments, the thermal management system 100 further includes: a heating and ventilation regulating component; a fifth tee fitting 55 is provided between the condenser 20 and the first expansion valve 14; a fifth pipeline is provided between the fifth tee fitting 55 and the second four-way fitting 62; and a third expansion valve 22, an evaporator 24 of the heating and ventilation regulating component, and a first one-way valve 15 are provided on the fifth pipeline. The third pipeline includes a four-way valve 12 and a sixth tee fitting 56; the four-way valve 12 is connected to the sixth tee fitting 56 via the warm air core 25 of the heating and ventilation regulating component and the second one-way valve 26.

[0052] Among them, the heating, ventilation and air conditioning components are HVAC (Heating, Ventilation and Air Conditioning). An HVAC system is a combined system that integrates air temperature and ventilation control. HVAC systems can not only ventilate, heat and cool, but also remove dust and bacteria from the area, providing a healthier environment.

[0053] Part of the heat exchange medium is diverted from the fifth three-way fitting 55 to the fifth pipeline. The heat exchange medium passes through the third expansion valve 22, the evaporator 24 of the heating and ventilation regulating component, the first one-way valve 15 to the second four-way fitting 62, and then flows back to the gas-liquid separator 16 to re-enter the circulation. Furthermore, the third pipeline is equipped with a four-way valve 12 and a sixth three-way fitting 56. The four-way valve 12 is connected to the sixth three-way fitting 56 through the warm air core 25 of the heating and ventilation regulating component and the second one-way valve 26.

[0054] In the above scheme, by setting up a five-way three-way fitting, a fifth pipeline is provided between the fifth three-way fitting 55 and the second four-way fitting 62. The fifth pipeline is equipped with a third expansion valve 22, an evaporator 24 of the heating and ventilation regulating component, and a first one-way valve 15. At the same time, a four-way valve 12 is set up to connect to the sixth three-way fitting 56 through the warm air core 25 of the heating and ventilation regulating component and the second one-way valve 26. This makes full use of existing energy, improves utilization rate, and improves efficiency.

[0055] Specifically, the HVAC system includes a blower 23.

[0056] Reference Figures 1 to 5 In some embodiments, a seventh three-way fitting 57 is provided between the first three-way valve 2 and the battery pack 9, and the seventh three-way fitting 57 is connected to the four-way valve 12.

[0057] Among them, a seventh three-way fitting 57 is provided between the first three-way valve 2 and the battery pack 9, and one inlet and outlet of the seventh three-way fitting 57 are connected to the inlet and outlet of the four-way valve 12 through a pipeline.

[0058] In the above scheme, a seventh three-way fitting 57 is set between the first three-way valve 2 and the battery pack 9. The seventh three-way fitting 57 is connected to the four-way valve 12, opening up a branch, which facilitates use.

[0059] In some specific embodiments, a third check valve 6 is provided between the first tee fitting 51 and the sixth tee fitting 56.

[0060] In some specific embodiments, a fourth check valve 7 is provided between the seventh three-way fitting 57 and the first three-way valve 2.

[0061] In some specific embodiments, a fifth one-way valve 31 and a first temperature sensor 5 are provided on the first pipeline.

[0062] In some specific embodiments, a first temperature and pressure sensor 17 is provided between the gas-liquid separator 16 and the compressor 18, and a second temperature sensor 19 is provided between the compressor 18 and the fourth three-way pipe fitting 54.

[0063] In some specific embodiments, a second temperature and pressure sensor 21 is provided between the condenser 20 and the fifth tee fitting 55, and a third temperature sensor 28 is provided between the condenser 20 and the heating element 29.

[0064] In some embodiments, the four-way valve 12 is provided with a first valve port a, a second valve port b, a third valve port c and a fourth valve port d, the thermal management system 100 is provided with a battery pack heating circuit, the fourth valve port d is connected to the second valve port b, and the battery pack heating circuit is provided with a condenser 20, a heating element 29, a battery pack 9 and a third water pump 27.

[0065] The fourth valve port d and the second valve port b on the four-way valve are respectively connected to the battery pack heating circuit. The battery pack heating circuit is equipped with a condenser 20, a heating element 29, a battery pack 9, and a third water pump 27. The heat exchange medium flows through the condenser 20, the heating element 29, the battery pack 9, and the third water pump 27 in sequence, and then circulates back to the condenser 20. By setting up the battery pack heating circuit, the flow of the battery pack heating circuit through the condenser 20 is improved, thus enhancing the overall performance.

[0066] Reference Figure 1 In some specific embodiments, a second three-way valve 11 is provided between the second water pump 10 and the first four-way pipe fitting 61, an eighth three-way pipe fitting 58 is provided between the first three-way pipe fitting 51 and the sixth three-way pipe fitting 56 to connect the second three-way valve 11, a third three-way pipe fitting 53 is provided between the first three-way valve 2 and the first water pump 3, the thermal management system 100 has a first mode, the thermal management system 100 is in the first mode, the first three-way valve 2 is switched to the first three-way pipe fitting 51 to connect the third three-way pipe fitting 53, the second three-way valve 11 is switched to the first four-way pipe fitting 61 to connect the second water pump 10, the fourth valve port d is connected to the first valve port a and the third valve port c respectively, and the four-way valve 12 is switched to the heating element 29 to connect the first four-way pipe fitting 61 and the warm air core 25.

[0067] The cooling flow path of the electric drive system is as follows:

[0068] Low-temperature radiator 1 → First three-way valve 2 → First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Low-temperature radiator 1.

[0069] The active cooling flow path for the battery is as follows:

[0070] Battery pack 9 → Second water pump 10 → Second three-way valve 11 → Battery heat exchanger 8 → Fourth one-way valve 7 → Battery pack 9. Water-cooled condenser → Four-way valve 12 → Low-temperature radiator 1 → Third one-way valve 6 → Third water pump 27 → Water-cooled condenser.

[0071] The heating flow path in the crew cabin is as follows:

[0072] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0073] The battery temperature equalization flow path is as follows:

[0074] Battery pack 9 → Second water pump 10 → Second three-way valve 11 → Battery heat exchanger 8 → Fourth one-way valve 7 → Battery pack 9.

[0075] Reference Figure 2 , Figure 6In some specific embodiments, the first three-way valve 2 is provided with a first port e, a second port f and a third port g. The first port e is connected to the first three-way pipe fitting 51, the second port f is connected to the third three-way pipe fitting 53, and the third port g is connected to the battery heat exchanger 8. The thermal management system 100 has a second mode. The thermal management system 100 is in the second mode. The second port f is connected to the first port e and the second port f is connected to the third port g. The second three-way valve 11 is switched to the first four-way pipe fitting 61 to connect to the second water pump 10. The fourth valve port d is connected to the first valve port a and the third valve port c respectively. The four-way valve 12 is switched to the heating element 29 to connect to the first four-way pipe fitting 61 and the warm air core 25.

[0076] The cooling flow path of the electric drive system is as follows:

[0077] Low-temperature radiator 1 → First three-way valve 2 → First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Low-temperature radiator 1.

[0078] The passive cooling flow path for the battery is as follows:

[0079] Battery pack 9 → Second water pump 10 → Second three-way valve 11 → Battery heat exchanger 8 → Fourth one-way valve 7 → Battery pack 9.

[0080] First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Battery heat exchanger 8 → First three-way valve 2 → First water pump 3.

[0081] Low-temperature radiator 1 → First three-way valve 2 → First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Low-temperature radiator 1.

[0082] The heating flow path in the crew cabin is as follows:

[0083] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0084] The heat dissipation flow path of the water-cooled condenser is as follows:

[0085] Water-cooled condenser → four-way valve 12 → low-temperature radiator 1 → third check valve 6 → third water pump 27 → water-cooled condenser.

[0086] Reference Figure 3 , Figure 6In some specific embodiments, the first three-way valve 2 is provided with a first port e, a second port f and a third port g. The first port e is connected to the first three-way fitting 51, the second port f is connected to the third three-way fitting 53, and the third port g is connected to the battery heat exchanger 8. The thermal management system 100 has a third mode. The thermal management system 100 is in the third mode. The second port f is connected to the first port e and the second port f is connected to the third port g. The second three-way valve 11 is switched to the second water pump 10 to connect to the eighth three-way fitting 58. The fourth valve port d is connected to the second valve port b and the third valve port c respectively. The four-way valve 12 is switched to the heating element 29 to connect to the battery pack 9 and the warm air core 25.

[0087] The flow path for water source heat pump heating of the passenger compartment or battery is as follows:

[0088] Low-temperature radiator 1 → First three-way valve 2 → First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Low-temperature radiator 1.

[0089] First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Battery heat exchanger 8 → First three-way valve 2 → First water pump 3.

[0090] The heating flow path in the crew cabin is as follows:

[0091] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0092] The heating flow path for battery pack 9 is as follows:

[0093] Water-cooled condenser → four-way valve 12 → battery pack 9 → second water pump 10 → second three-way valve 11 → third water pump 27 → water-cooled condenser.

[0094] Reference Figure 4 In some specific embodiments, the thermal management system 100 has a fourth mode. In the fourth mode, the first three-way valve 2 switches to the battery heat exchanger 8 and connects to the third three-way pipe fitting 53. The second three-way valve 11 switches to the second water pump 10 and connects to the eighth three-way pipe fitting 58. The fourth valve port d connects to the second valve port b and the third valve port c respectively. The four-way valve 12 switches to the heating element 29 and connects to the battery pack 9 and the warm air core 25.

[0095] in,

[0096] The flow path for water source heat pump heating of the passenger compartment or battery is as follows:

[0097] First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Battery heat exchanger 8 → First three-way valve 2 → First water pump 3.

[0098] The heating flow path in the crew cabin is as follows:

[0099] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0100] The heating flow path for battery pack 9 is as follows:

[0101] Water-cooled condenser → four-way valve 12 → battery pack 9 → second water pump 10 → second three-way valve 11 → third water pump 27 → water-cooled condenser.

[0102] Compressor 18 generates heat to heat the battery or crew compartment:

[0103] The heating flow path in the crew cabin is as follows:

[0104] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0105] The heating flow path for battery pack 9 is as follows:

[0106] Water-cooled condenser → four-way valve 12 → battery pack 9 → second water pump 10 → second three-way valve 11 → third water pump 27 → water-cooled condenser.

[0107] The heat storage flow path of the motor is as follows:

[0108] First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Battery heat exchanger 8 → First three-way valve 2 → First water pump 3.

[0109] Reference Figure 5 In some embodiments, the thermal management system 100 has a fifth mode. In the fifth mode, the first three-way valve 2 switches to the battery heat exchanger 8 and connects to the third three-way fitting 53, the second three-way valve 11 switches to the second water pump 10 and connects to the battery heat exchanger 8, the fourth valve port d connects to the third valve port c, and the four-way valve 12 switches to the heating element 29 and connects to the warm air core 25.

[0110] The flow path for the motor to actively generate heat to heat the battery is as follows:

[0111] First water pump 3 → Electric drive assembly 4 → Fifth one-way valve 31 → Battery heat exchanger 8 → First three-way valve 2 → First water pump 3.

[0112] Battery pack 9 → Second water pump 10 → Second three-way valve 11 → Battery heat exchanger 8 → Fourth one-way valve 7 → Battery pack 9.

[0113] The heating flow path in the crew cabin is as follows:

[0114] Water-cooled condenser → four-way valve 12 → heater core 25 → second one-way valve 26 → third water pump 27 → water-cooled condenser.

[0115] This invention focuses on the innovation of integrated thermal management architecture, employing a three-way valve, a four-way valve (12), and a check valve as its core, cleverly combined with a domain controller and flow channel plate to achieve dual optimization of cost reduction and structural simplification. Compared to the minimal investment of earlier mature designs, significant benefits have been achieved, and the product's durability has been fully validated in the market. Compared to thermal management modules based on multi-way valves (≥8 ports), our solution demonstrates more significant advantages.

[0116] This utility model innovatively utilizes a three-way valve, a four-way valve 12, and a one-way valve to construct a fully functional thermal management integrated architecture, which not only reduces costs but also optimizes the spatial layout, making the system more compact and efficient.

[0117] This utility model, through the ingenious design of the four-way valve 12, can flexibly allocate water-cooled condenser and PTC hot water to low-temperature radiator 1, battery and heater core 25, effectively avoiding interference between circuits, thereby significantly reducing energy consumption and improving the overall system's energy efficiency.

[0118] Compared to related technologies where series cooling of components reduces heat exchange capacity, for example, when the battery is passively cooled, the water from the low-temperature radiator first passes through the electric drive and then through the battery, which reduces the cooling effect of the battery and increases cooling time and energy consumption. This utility model achieves the best cooling effect of the low-temperature radiator 1 by connecting the battery, electric drive and water-cooled condenser in parallel, thereby reducing cooling time and energy consumption.

[0119] First, comparing related technologies, there is a problem of shared heating circuits. In scenarios where the passenger compartment does not require heating but the battery needs to be heated, the high-temperature coolant flowing through the heating core causes unnecessary heat leakage, increasing energy consumption. This utility model, through the ingenious design of the four-way valve 12, flexibly allocates the water-cooled condenser and PTC hot water to the low-temperature radiator 1, battery, and heating core 25, effectively avoiding interference between circuits, thereby significantly reducing energy consumption and improving the overall system's energy efficiency.

[0120] The vehicle according to an embodiment of the present invention includes the thermal management system 100 described above.

[0121] According to the vehicle of this utility model embodiment, an electric drive assembly 4, a battery pack 9, and a condenser 20 are connected in parallel. Any one of the three can work alone or multiple ones can work simultaneously, thereby making the electric drive assembly 4, battery pack 9, and condenser 20 more independent, improving temperature regulation accuracy, improving heat distribution, improving the cooling effect of the system, and improving the vehicle's range.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0123] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system of a vehicle, characterized by, The utility model relates to a kind of battery thermal management system (100), including: Low temperature radiator (1), the import and export of low temperature radiator (1) are communicated with first four-way pipe fittings (61) respectively, first three-way pipe fittings (51), first three-way pipe fittings (51) are communicated with first three-way valve (2); First pipeline, one end of the first pipeline is communicated with the first three-way valve (2), the other end is communicated with the first four-way pipe fittings (61), first water pump (3), electric drive assembly (4) are equipped on the first pipeline; Second pipeline, one end of the second pipeline is communicated with the first three-way valve (2), the other end is communicated with the first four-way pipe fittings (61), battery pack (9), second water pump (10) are equipped on the second pipeline; Third pipeline, one end of the third pipeline is communicated with the first three-way pipe fittings (51), the other end is communicated with the first four-way pipe fittings (61), third water pump (27), condenser (20), heating piece (29) are equipped on the third pipeline.

2. The thermal management system of a vehicle according to claim 1, characterized by, The battery pack (9) is connected with battery heat exchanger (8) in parallel, and the heat management system (100) further includes: fourth pipeline, the import and export of battery heat exchanger (8) are communicated respectively at both ends of the fourth pipeline, second four-way pipe fittings (62), gas-liquid separator (16), compressor (18), fourth three-way pipe fittings (54), first expansion valve (14) are equipped on the fourth pipeline, the condenser (20) is arranged on the fourth pipeline, and the fourth three-way pipe fittings (54) are communicated with the second four-way pipe fittings (62) by second expansion valve (13).

3. The thermal management system of a vehicle according to claim 2, characterized by, Condenser (20) and first expansion valve (14) are equipped with fifth three-way pipe fittings (55) between, fifth three-way pipe fittings (55) and second four-way pipe fittings (62) are equipped with fifth pipeline between, third expansion valve (22), evaporator (24), first check valve (15) are equipped on the fifth pipeline;Wherein, Fourth three-way valve (12), sixth three-way pipe fittings (56) are equipped on the third pipeline, fourth three-way valve (12) is communicated with sixth three-way pipe fittings (56) by warm air core (25), second check valve (26), seventh three-way pipe fittings (57) are equipped between first three-way valve (2) and battery pack (9), and seventh three-way pipe fittings (57) are communicated with fourth three-way valve (12).

4. The thermal management system of a vehicle according to claim 3, characterized by, Fourth three-way valve (12) is equipped with first valve port (a), second valve port (b), third valve port (c) and fourth valve port (d), the heat management system (100) is equipped with battery pack heating loop, the fourth valve port (d) is communicated with the second valve port (b), and the condenser (20), the heating piece (29), the battery pack (9), third water pump (27) are equipped on the battery pack heating loop.

5. The thermal management system of a vehicle according to claim 4, characterized by The second water pump (10) and the first four-way pipe (61) are provided with a second three-way valve (11), the first three-way pipe (51) and the sixth three-way pipe (56) are provided with an eighth three-way pipe (58) connected with the second three-way valve (11), the first three-way valve (2) and the first water pump (3) are provided with a third three-way pipe (53), the thermal management system (100) has a first mode, the thermal management system (100) is in the first mode, the first three-way valve (2) is switched to the first three-way pipe (51) to communicate the third three-way pipe (53), the second three-way valve (11) is switched to the battery heat exchanger (8) to communicate the second water pump (10), and the fourth valve port (d) respectively communicates the first valve port (a) and the third valve port (c).

6. The thermal management system of a vehicle according to claim 5, characterized by The first three-way valve (2) is provided with a first port (e), a second port (f) and a third port (g), the first port (e) communicates the first three-way pipe (51), the second port (f) communicates the third three-way pipe (53), and the third port (g) communicates the battery heat exchanger (8), the thermal management system (100) has a second mode, the thermal management system (100) is in the second mode, the second port (f) communicates the first port (e), the second port (f) communicates the third port (g), the second three-way valve (11) is switched to the first four-way pipe (61) to communicate the second water pump (10), and the fourth valve port (d) respectively communicates the first valve port (a) and the third valve port (c).

7. The thermal management system of a vehicle according to claim 5, characterized by, The first three-way valve (2) is provided with a first port (e), a second port (f) and a third port (g), the first port (e) communicates the first three-way pipe (51), the second port (f) communicates the third three-way pipe (53), and the third port (g) communicates the battery heat exchanger (8), the thermal management system (100) has a third mode, the thermal management system (100) is in the third mode, the second port (f) communicates the first port (e), the second port (f) communicates the third port (g), the second three-way valve (11) is switched to the second water pump (10) to communicate the eighth three-way pipe (58), and the fourth valve port (d) respectively communicates the second valve port (b) and the third valve port (c).

8. The thermal management system of a vehicle according to claim 5, characterized by, The thermal management system (100) has a fourth mode, the thermal management system (100) is in the fourth mode, the first three-way valve (2) is switched to the battery heat exchanger (8) to communicate the third three-way pipe (53), the second three-way valve (11) is switched to the second water pump (10) to communicate the eighth three-way pipe (58), and the fourth valve port (d) respectively communicates the second valve port (b) and the third valve port (c).

9. The thermal management system of a vehicle according to claim 5, characterized by, The heat management system (100) has a fifth mode, when the heat management system (100) is in the fifth mode, the first three-way valve (2) switches to the battery heat exchanger (8) communicating the third three-way pipe (53), the second three-way valve (11) switches to the second water pump (10) communicating the battery heat exchanger (8), the fourth valve port (d) communicates the third valve port (c).

10. A vehicle characterized by comprising: The heat management system (100) according to any one of claims 1 to 9. The heat management system (100) according to any one of claims 1 to 9.

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