Thermal management system of vehicle and automobile

Abstract

The invention belongs to the technical field of automobiles, and relates to a thermal management system of a vehicle and the automobile, the thermal management system comprises a front-end heat dissipation module, a battery pack heat dissipation module, an electric heat dissipation module, an air conditioner module, a cooler module and a ten-way valve, ten valve ports of the ten-way valve only need to rotate by different angles to be correspondingly connected with pipelines of different modules, and the ten valve ports are connected with pipelines of different modules. Therefore, the front-end heat dissipation module, the electric heat dissipation module, the cooler module and the battery pack heat dissipation module can form a plurality of cooling liquid circulation modes, the structure is simple, and the control is convenient. Multiple cooling liquid circulation modes and multiple refrigerant circulation modes are arranged and combined, so that the whole heat management system can form multiple heat management modes, and the heat management system is simple in structure, high in integration degree and capable of meeting different requirements of heating, heating, refrigerating and the like.

Description

Technical Field

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

[0002] With the development of new energy vehicles, automotive thermal management systems are becoming increasingly sophisticated. These systems include front-end cooling modules, battery pack cooling modules, electric drive cooling modules, air conditioning modules, and cooler modules. The integration of these modules is relatively low, resulting in a very complex overall architecture. The piping arrangements for refrigerant and coolant are also quite cumbersome and difficult to control. Summary of the Invention

[0003] Based on this, the present invention provides a vehicle thermal management system and a vehicle to improve the problem of complex structure and inconvenient control of existing thermal management systems.

[0004] According to an embodiment of the present invention, a first aspect provides a thermal management system for a vehicle, comprising:

[0005] Front-end heat dissipation module, battery pack heat dissipation module, electric drive heat dissipation module, air conditioning module, cooler module and ten-way valve;

[0006] The front-end heat dissipation module includes an external heat exchanger and a low-temperature radiator;

[0007] An electric drive cooling module, comprising a first pump body and a motor assembly connected in series;

[0008] A battery pack heat dissipation module includes a closed loop formed by connecting a second pump body, a battery cold plate and a battery heat exchanger, wherein the battery heat exchanger includes a first heat exchange plate for introducing coolant and a second heat exchange plate for introducing refrigerant.

[0009] An air conditioning module includes a gas-liquid separator, a compressor, and an internal heat exchanger connected in series, the internal heat exchanger being connected to a front evaporator, a rear evaporator, and a heater;

[0010] A cooler module, comprising a first cooling plate for introducing coolant and a second cooling plate for introducing refrigerant;

[0011] A ten-way valve includes a first to a tenth valve port distributed sequentially along the circumference, wherein the first valve port is connected to the second valve port, the third valve port is connected to the sixth valve port, the fourth valve port is connected to the fifth valve port, the seventh valve port is connected to the tenth valve port, and the eighth valve port is connected to the ninth valve port.

[0012] The first end of the low-temperature radiator is connected to the ten-way valve via a first pipe, and the second end of the low-temperature radiator is connected to the ten-way valve via a second pipe; the inlet end of the first pump body is connected to the ten-way valve via a third pipe, and the outlet end of the motor assembly is connected to the ten-way valve via a fourth pipe; the inlet end of the first cooling plate is connected to the ten-way valve via a fifth pipe, and the outlet end of the first cooling plate is connected to the ten-way valve via a sixth pipe; the inlet end of the second pump body is connected to the ten-way valve via a seventh pipe, and the inlet end of the battery cold plate is connected to the ten-way valve via a three-way valve and an eighth pipe; the thermal management system further includes a ninth pipe, both ends of which are connected to the ten-way valve;

[0013] The front-end heat dissipation module, the electric drive heat dissipation module, and the battery pack heat dissipation module work together with a ten-way valve to achieve coolant circulation. The coolant circulation methods include: a first electric drive coolant circulation method, where the coolant circulates within the electric drive heat dissipation module; a second electric drive coolant circulation method, where the coolant circulates between the electric drive heat dissipation module and the front-end heat dissipation module; a third electric drive coolant circulation method, where the coolant circulates between the electric drive heat dissipation module and the cooler module; a first battery pack coolant circulation method, where the coolant circulates within the battery pack heat dissipation module; a second battery pack coolant circulation method, where the coolant circulates between the battery pack heat dissipation module and the front-end heat dissipation module; a third battery pack coolant circulation method, where the coolant circulates between the cooler module and the battery pack heat dissipation module; a fourth electric drive / battery pack coolant circulation method, where the coolant circulates between the electric drive heat dissipation module and the battery pack heat dissipation module; and a fifth electric drive / battery pack coolant circulation method, where the coolant circulates within the electric drive heat dissipation module, the battery pack heat dissipation module, and the front-end heat dissipation module.

[0014] In some embodiments, the outlet end of the internal heat exchanger is connected to the first end of the external heat exchanger via a first branch pipe, and the first branch pipe is equipped with a first solenoid valve; the first end of the internal heat exchanger is connected to the inlet end of the gas-liquid separator via a second branch pipe, and the second branch pipe is equipped with a second solenoid valve; the outlet end of the internal heat exchanger is connected to the inlet end of the second heat exchange plate via a third branch pipe, the outlet end of the second heat exchange plate is connected to the first end of a fourth branch pipe, and the second end of the fourth branch pipe is connected to the inlet end of the second cooling plate and the front evaporator, wherein the fourth branch pipe is equipped with a third solenoid valve, the inlet end of the second cooling plate is equipped with a first expansion valve, and the inlet end of the front evaporator is equipped with a second expansion valve;

[0015] The second end of the fourth branch pipe is connected to the first end of the fifth branch pipe, the second end of the fifth branch pipe is connected to the inlet end of the rear evaporator, the fifth branch pipe is equipped with a third expansion valve, and the inlet end of the rear evaporator is equipped with a fourth solenoid valve; the second end of the external heat exchanger is equipped with a sixth branch pipe, and the sixth branch pipe is equipped with a seventh branch pipe that connects to the third solenoid valve and the second end of the fourth branch pipe.

[0016] The sixth branch pipe is equipped with a second one-way valve to control the flow of refrigerant to the fourth branch pipe. The sixth branch pipe is also equipped with an eighth branch pipe connected to the second end of the fifth branch pipe. The eighth branch pipe is equipped with a third one-way valve to control the flow of refrigerant to the sixth branch pipe. The outlet end of the second cooling plate is connected to the inlet end of the gas-liquid separator through a ninth branch pipe. The outlet ends of the front evaporator and the rear evaporator are connected to the inlet end of the gas-liquid separator through a tenth branch pipe.

[0017] The air conditioning module circulates refrigerant through pipes. The refrigerant circulation methods include: a first method where the refrigerant in the air conditioning module passes through the front-end heat dissipation module; a second method where the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the cooler module; a third method where the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the battery pack heat dissipation module; a fourth method where the refrigerant in the air conditioning module passes through both the battery pack heat dissipation module and the cooler module; and a fifth method where the refrigerant in the air conditioning module passes through the battery pack heat dissipation module, the cooler module, and the front-end heat dissipation module.

[0018] In some embodiments, the coolant circulation method of the first type of electric drive is specifically that the electric drive heat dissipation module is connected to two interconnected valve ports of the ten-way valve through the third pipe and the fourth pipe.

[0019] Specifically, the coolant circulation method of the first type of battery pack is such that neither the seventh pipe nor the eighth pipe of the battery pack heat dissipation module is connected to the ten-way valve.

[0020] In some embodiments, the coolant circulation method of the second type of electric drive is specifically as follows: the low-temperature radiator is connected to the tenth valve port through the first pipe and to the ninth valve port through the second pipe; the electric drive heat dissipation module is connected to the eighth valve port through the third pipe and to the seventh valve port through the fourth pipe.

[0021] The third type of coolant circulation method for electric drive is as follows: the electric drive heat dissipation module is connected to the tenth valve port through the third pipe and to the ninth valve port through the fourth pipe; the cooler module is connected to the eighth valve port through the fifth pipe and to the seventh valve port through the sixth pipe.

[0022] In some embodiments, the coolant circulation method of the second type of electric drive is specifically as follows: the low-temperature radiator is connected to the tenth valve port through the first pipe and to the ninth valve port through the second pipe; the electric drive heat dissipation module is connected to the eighth valve port through the third pipe and to the seventh valve port through the fourth pipe.

[0023] The third type of battery pack coolant circulation method is as follows: the battery pack heat dissipation module is connected to the third valve port through the eighth pipe and to the fourth valve port through the seventh pipe; the first cooling plate is connected to the sixth valve port through the fifth pipe and to the fifth valve port through the sixth pipe.

[0024] In some embodiments, the fourth type of coolant circulation method for the electric drive / battery pack is as follows: the electric drive heat dissipation module is connected to the seventh valve port of the ten-way valve through the third pipe and to the sixth valve port of the ten-way valve through the fourth pipe; the battery pack heat dissipation module is connected to the third valve port of the ten-way valve through the seventh pipe and to the second valve port of the ten-way valve through the eighth pipe; and the two ends of the ninth pipe are connected to the tenth valve port and the first valve port of the ten-way valve respectively.

[0025] The fifth type of coolant circulation method for electric drive is as follows: the low-temperature radiator of the front-end heat dissipation module is connected to the third valve port of the ten-way valve through the first pipe and to the second valve port of the ten-way valve through the second pipe; the electric drive heat dissipation module is connected to the first valve port of the ten-way valve through the third pipe and to the tenth valve port of the ten-way valve through the fourth pipe; the battery pack heat dissipation module is connected to the seventh valve port of the ten-way valve through the seventh pipe and to the sixth valve port of the ten-way valve through the eighth pipe.

[0026] In some embodiments, the refrigerant circulation mode of the first type of air conditioner is specifically as follows: the first solenoid valve on the first branch pipe is open, the second solenoid valve on the second branch pipe is closed, the third solenoid valve on the fourth branch pipe is closed, the first expansion valve at the inlet end of the second cooling plate is closed, and the third expansion valve on the fifth branch pipe is open.

[0027] The refrigerant circulation method of the second type of air conditioner is as follows: the first solenoid valve on the first branch pipe is open, the second solenoid valve on the second branch pipe is closed, the third solenoid valve on the fourth branch pipe is closed, the first expansion valve at the inlet end of the second cooling plate is open, and the third expansion valve on the fifth branch pipe is open.

[0028] The refrigerant circulation method of the third type of air conditioner is as follows: the first solenoid valve on the first branch pipe is closed, the second solenoid valve on the second branch pipe is open, the third solenoid valve on the fourth branch pipe is open, the first expansion valve at the inlet end of the second cooling plate is closed, and the third expansion valve on the fifth branch pipe is open.

[0029] The refrigerant circulation mode of the fourth type of air conditioner is as follows: the first solenoid valve on the first branch pipe is closed, the second solenoid valve on the second branch pipe is closed, the third solenoid valve on the fourth branch pipe is open, the first expansion valve at the inlet end of the second cooling plate is open, and the third expansion valve on the fifth branch pipe is closed.

[0030] The refrigerant circulation method of the fifth type of air conditioner is as follows: the first solenoid valve on the first branch pipe is closed, the second solenoid valve on the second branch pipe is open, the third solenoid valve on the fourth branch pipe is open, the first expansion valve at the inlet end of the second cooling plate is open, and the third expansion valve on the fifth branch pipe is open.

[0031] In some embodiments, the first solenoid valve, the second solenoid valve, and the third solenoid valve are integrated into a two-position eight-way valve, and the second check valve and the third check valve are eliminated.

[0032] The two-position eight-way valve includes an A port for the medium to enter. The A port is connected to a first chamber through a first branch channel and a second branch channel. The first chamber is connected to a second chamber through a first branch port, a second branch port and a third branch port arranged in sequence. The second chamber is provided with a B port, a C port, a F port, a G port, a H port, an E port and a D port arranged in sequence to connect to the outside.

[0033] The first chamber is provided with a first piston, on which a first blocking part for blocking the first branch channel and a second blocking part for blocking the second branch channel are formed; when the first blocking part blocks the first branch channel, the first branch port and the second branch port are located between the first blocking part and the second blocking part, and the second branch channel is connected to the second chamber through the third branch port; when the second blocking part moves to the position of blocking the second branch channel, the second branch port and the third branch port are located between the first blocking part and the second blocking part, and the first branch channel is connected to the second chamber through the first branch port;

[0034] The second chamber is equipped with a second piston, on which a third to a seventh sealing portion are sequentially formed. When the third sealing portion opens the B port, the C port and the F port are located between the third sealing portion and the fourth sealing portion, the G port and the H port are located between the fourth sealing portion and the fifth sealing portion, and the second diversion port, the E port and the D port are located between the sixth sealing portion and the seventh sealing portion. At this time, the second diversion channel is connected to the outside through the second chamber, the E port and the D port, and the first diversion port is connected to the outside through the second chamber and the B port.

[0035] When the seventh sealing section opens the D interface, the B and C interfaces are located between the third and fourth sealing sections, the F and G interfaces are located between the fourth and fifth sealing sections, the H interface is located between the fifth and sixth sealing sections, and the second diversion port and the E interface are located between the sixth and seventh sealing sections. At this time, the second diversion port is connected to the outside through the second chamber and the E interface, and the third diversion port is connected to the outside through the second chamber and the D interface.

[0036] In some embodiments, the portion of the first branch pipe from the internal heat exchanger to the first solenoid valve is connected to the A port, and the portion of the first branch pipe from the first solenoid valve to the external heat exchanger is connected to the D port; the second branch pipe is connected to the gas-liquid separator from the E port; the third branch pipe is connected to the second heat exchange plate from the B port; the portion of the fourth branch pipe from the second heat exchange plate to the third solenoid valve is connected to the C port, and the portion of the fourth branch pipe from the third solenoid valve to the second end is connected to the F port; the sixth branch pipe is connected to the external heat exchanger from the G port; and the eighth branch pipe is connected to the H port via the seventh branch pipe.

[0037] According to an embodiment of the present invention, a second aspect provides an automobile that includes the aforementioned vehicle thermal management system.

[0038] In the thermal management system of this invention, the front-end heat dissipation module, the electric drive heat dissipation module, the cooler module, and the battery pack heat dissipation module are used in conjunction with a ten-way valve. The ten ports of this ten-way valve only need to be rotated at different angles to connect to the pipes of different modules, thus enabling the front-end heat dissipation module, the electric drive heat dissipation module, the cooler module, and the battery pack heat dissipation module to form multiple coolant circulation modes. Its structure is simple and easy to control. Combining multiple coolant circulation modes with multiple refrigerant circulation modes allows the entire thermal management system to form multiple thermal management modes. This thermal management system has a simple structure, a high degree of integration, and can meet different needs such as heating, cooling, and heat generation. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the thermal management system in Embodiment 1;

[0040] Figure 2 This is a schematic diagram of the ten-way valve in Example 1;

[0041] Figure 3 This is a schematic diagram of the first thermal management mode in Embodiment 1;

[0042] Figure 4 This is a schematic diagram of the second thermal management mode in Embodiment 1;

[0043] Figure 5 This is a structural schematic diagram of the third thermal management mode in Example 1.

[0044] Figure 6 This is a schematic diagram of the fourth thermal management mode in Example 1;

[0045] Figure 7 This is a schematic diagram of the fifth thermal management mode in Example 1;

[0046] Figure 8 This is a schematic diagram of the sixth thermal management mode in Example 1;

[0047] Figure 9 This is a schematic diagram of the seventh thermal management mode in Example 1;

[0048] Figure 10 This is a schematic diagram of the eighth thermal management mode in Example 1;

[0049] Figure 11 This is a schematic diagram of the ninth thermal management mode in Example 1;

[0050] Figure 12 This is a schematic diagram of the tenth thermal management mode in Example 1;

[0051] Figure 13 This is a schematic diagram of the eleventh thermal management mode in Example 1;

[0052] Figure 14 This is a schematic diagram of the twelfth thermal management mode in Example 1;

[0053] Figure 15 This is a schematic diagram of the thirteenth thermal management mode in Example 1;

[0054] Figure 16 This is a schematic diagram of the fourteenth thermal management mode in Example 1;

[0055] Figure 17 This is a schematic diagram of the thermal management system in Example 2;

[0056] Figure 18 This is a schematic diagram of the two-position eight-way valve in Example 2.

[0057] In the diagram: External heat exchanger 10; Low-temperature radiator 11; External fan 12; Active air intake grille 13; First pump body 20; First motor 21; Second motor 22; First one-way valve 23; Second pump body 30; Battery cooling plate 31; First heat exchange plate 32; Second heat exchange plate 33; Three-way valve 34; Compressor 40; Gas-liquid separator 41; Internal heat exchanger 42; Front evaporator 43; Rear evaporator 44; Heater 45; First cooling plate 50; Second cooling plate 51; Ten-way valve 60; First valve port 601; Second valve port 601; Third valve port 603; Fourth valve port 604; Fifth valve port 605; Sixth valve port 606; Seventh valve port 607; Eighth valve port 608; Ninth valve port 609; Tenth valve port 600; First solenoid valve 61; Second solenoid valve 62; Third solenoid valve 63; Fourth solenoid valve 64; First expansion valve 65; Second expansion valve 66; Third expansion valve 67; Valve 67; Second check valve 68; Third check valve 69; First pipe 71; Second pipe 72; Third pipe 73; Fourth pipe 74; Fifth pipe 75; Sixth pipe 76; Seventh pipe 77; Eighth pipe 78; Ninth pipe 79; First branch pipe 81; Second branch pipe 82; Third branch pipe 83; Fourth branch pipe 84; Fifth branch pipe 85; Sixth branch pipe 86; Seventh branch pipe 87; Eighth branch pipe 88; Ninth branch pipe 89; Tenth Branch pipe 80; 2-position 8-way valve 90; First chamber 91; First branch channel 911; Second branch channel 912; Second chamber 92; First branch port 921; Second branch port 922; Third branch port 923; First piston 93; First sealing part 931; Second sealing part 932; Second piston 94; Third sealing part 941; Fourth sealing part 942; Fifth sealing part 943; Sixth sealing part 944; Seventh sealing part 945. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0059] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0060] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They 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 limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] Example 1

[0062] like Figure 1 As shown, this embodiment provides a thermal management system configured in an automobile. The thermal management system includes a front-end heat dissipation module, a battery pack heat dissipation module, an electric drive heat dissipation module, an air conditioning module, a cooler module, and a ten-way valve 60.

[0063] The front-end heat dissipation module of this embodiment includes an external heat exchanger 10, a low-temperature radiator 11, and an external fan 12 disposed near the active air intake grille 13. The external fan 12 is used to generate airflow through the external heat exchanger 10 and the low-temperature radiator 11 so that the air can fully exchange heat with the refrigerant in the external heat exchanger 10 and the coolant in the low-temperature radiator 11.

[0064] The electric drive cooling module of this embodiment includes a first pump body 20 and a motor assembly connected in series. The first pump body 20 drives the coolant to flow through the motor assembly to regulate the temperature. The outlet end of the first pump body 20 is connected to a first check valve 23. The motor assembly of this embodiment preferably includes a first motor 21 and a second motor 22 connected in parallel. The outlet end of the first check valve 23 is connected to the first motor 21 and the second motor 22 respectively through a three-way valve 34. The inlet end of the first motor 21 is provided with a liquid cooling distribution device, and the inlet end of the second motor 22 is provided with a power module and a throttle valve arranged in parallel.

[0065] The battery pack heat dissipation module of this embodiment includes a closed loop consisting of a second pump body 30, a battery cold plate 31, and a battery heat exchanger connected in sequence. The second pump body 30 drives the coolant to circulate through the battery heat exchanger and the battery cold plate 31 to dissipate heat from the battery pack. The battery heat exchanger includes a first heat exchange plate 32 and a second heat exchange plate 33. The inlet end of the first heat exchange plate 32 is connected to the battery cold plate 31, and the outlet end of the first heat exchange plate 32 is connected to the inlet end of the second pump body 30. Driven by the second pump body 30, the coolant circulates between the battery cold plate 31 and the first heat exchange plate 32 to regulate the temperature of the battery pack. The refrigerant introduced into the second heat exchange plate 33 exchanges heat with the coolant in the first heat exchange plate 32. In this embodiment, the second pump body 30 is preferably a heating pump, so that the battery pack heat dissipation module has a heating function, which is beneficial for the temperature regulation of the battery pack.

[0066] The air conditioning module in this embodiment includes a compressor 40, a gas-liquid separator 41, an internal heat exchanger 42, a front evaporator 43, a rear evaporator 44, and a heater 45. The gas-liquid separator 41, the compressor 40, and the internal heat exchanger 42 are arranged in series. The gas-liquid separator 41 is connected to the inlet end of the compressor 40, and the internal heat exchanger 42 is connected to the outlet end of the compressor 40. The front evaporator 43 and the rear evaporator 44 are connected to the internal heat exchanger 42 and the heater 45 to cool or heat the passenger compartment.

[0067] The cooler module in this embodiment includes a first cooling plate 50 and a second cooling plate 51. The first cooling plate 50 is used to introduce coolant, and the second cooling plate 51 is used to introduce refrigerant to exchange heat with the coolant in the first cooling plate 50. It should be noted that the structures of the front-end heat dissipation module, battery pack heat dissipation module, electric drive heat dissipation module, air conditioning module, and cooler module in this embodiment are all existing technologies, and will not be described in detail in this embodiment.

[0068] In this embodiment, the front-end heat dissipation module, battery pack heat dissipation module, electric drive heat dissipation module, and cooler module are connected via a ten-way valve 60. See details. Figure 2 The ten-way valve 60 includes a first to a tenth valve port distributed sequentially along the circumference, wherein the first valve port 601 is connected to the second valve port 601, the third valve port 603 is connected to the sixth valve port 606, the fourth valve port 604 is connected to the fifth valve port 605, the seventh valve port 607 is connected to the tenth valve port 600, and the eighth valve port 608 is connected to the ninth valve port 609.

[0069] In the front-end heat dissipation module, the first end of the low-temperature radiator 11 is connected to the ten-way valve 60 via the first pipe 71, and the second end of the low-temperature radiator 11 is connected to the ten-way valve 60 via the second pipe 72. In the electric drive heat dissipation module, the inlet end of the first pump body 20 is connected to the ten-way valve 60 via the third pipe 73, and the outlet end of the motor assembly is connected to the ten-way valve 60 via the fourth pipe 74. In the cooler module, the inlet end of the first cooling plate 50 is connected to the ten-way valve 60 via the fifth pipe 75, and the outlet end of the first cooling plate 50 is connected to the ten-way valve 60 via the sixth pipe 76. In the battery pack heat dissipation module, the inlet end of the second pump body 30 is connected to the ten-way valve 60 via the seventh pipe 77, and the inlet end of the battery cold plate 31 is connected to the ten-way valve 60 via the eighth pipe 78. Specifically, a three-way pipe is provided on the pipeline between the second pump body 30 and the first heat exchange plate 32. This three-way pipe is connected to the ten-way valve 60 through a seventh pipeline 77. A three-way valve 34 is provided on the pipeline between the second pump body 30 and the battery cold plate 31. This three-way valve 34 is connected to the ten-way valve 60 through an eighth pipeline 78. The thermal management system of this embodiment also includes a ninth pipeline 79, both ends of which are connected to the ten-way valve 60.

[0070] The thermal management system of this embodiment preferably includes a liquid storage tank, which is provided with a liquid replenishment pipe connected to the inlet end of the first pump body 20, a first liquid return pipe connected to the liquid storage tank at the outlet end of the motor assembly, and a second liquid return pipe connected to the liquid storage tank at the outlet end of the internal heat exchanger 42. The liquid storage tank can supply liquid to the thermal management system to ensure the effective operation of the thermal management system.

[0071] In the air conditioning module, the outlet end of the internal heat exchanger 42 is connected to the first end of the external heat exchanger 10 via a first branch pipe 81, and a first solenoid valve 61 is provided on the first branch pipe 81; the first end of the internal heat exchanger 42 is connected to the inlet end of the gas-liquid separator 41 via a second branch pipe 82, and a second solenoid valve 62 is provided on the second branch pipe 82. In this embodiment, the first branch pipe 81, the second branch pipe 82, and the first end of the external heat exchanger 10 can be connected by a tee pipe to save on pipe material.

[0072] The outlet of the internal heat exchanger 42 is connected to the inlet of the second heat exchange plate 33 of the battery heat exchanger via a third branch pipe 83. The outlet of the second heat exchange plate 33 is connected to the second cooling plate 51 and the front evaporator 43 via a fourth branch pipe 84. The outlet of the second heat exchange plate 33 is connected to the first end of the fourth branch pipe 84, and the second end of the fourth branch pipe 84 is connected to the inlet of the second cooling plate 51 and the front evaporator 43. A third solenoid valve 63 is installed on the fourth branch pipe 84, a first expansion valve 65 is installed at the inlet of the second cooling plate 51, and a second expansion valve 66 is installed at the inlet of the front evaporator 43. The second end of the fourth branch pipe 84 is also connected to the first end of the fifth branch pipe 85, and the second end of the fifth branch pipe 85 is connected to the inlet of the rear evaporator 44. A third expansion valve 67 is installed on the fifth branch pipe 85, and a fourth solenoid valve 64 is installed at the inlet of the rear evaporator 44. The second end of the fourth branch pipe 84, the first end of the fifth branch pipe 85, the second cooling plate 51, and the inlet end of the evaporator are preferably connected by a four-way pipe to save on pipe material.

[0073] The second end of the external heat exchanger 10 is provided with a sixth branch pipe 86. A seventh branch pipe 87 is provided on the sixth branch pipe 86, connecting the third solenoid valve 63 of the fourth branch pipe 84 to the second end. The seventh branch pipe 87 is preferably a three-way pipe connected to the fourth branch pipe 84. A second one-way valve 68 is provided on the sixth branch pipe 86 to control the flow of refrigerant to the fourth branch pipe 84, allowing the sixth branch pipe 86 to have one-way access to the second cooling plate 51, the front evaporator 43, and the rear evaporator 44. An eighth branch pipe 88 is also provided on the sixth branch pipe 86, connecting to the second end of the fifth branch pipe 85. A third one-way valve 69 is provided on the eighth branch pipe 88 to control the flow of refrigerant to the sixth branch pipe 86. The outlet end of the second cooling plate 51 is connected to the inlet end of the gas-liquid separator 41 through the ninth branch pipe 89. The outlet ends of the front evaporator 43 and the rear evaporator 44 are connected to the inlet end of the gas-liquid separator 41 through the tenth branch pipe 80. The second branch pipe 82, the ninth branch pipe 89, the tenth branch pipe 80 and the inlet end of the gas-liquid separator 41 are connected by a four-way pipe.

[0074] In this embodiment, the front-end heat dissipation module, electric drive heat dissipation module, battery pack heat dissipation module, and air conditioning module are connected by a ten-way valve 60, enabling the thermal management system to achieve multiple coolant circulation modes.

[0075] In the thermal management of the electric drive section, the electric drive cooling module can achieve multiple connection methods through a ten-way valve 60. Specifically, the first method involves the coolant circulating only within the electric drive cooling module; the second method connects the electric drive cooling module to the front-end cooling module, allowing the coolant to circulate between both modules; the third method connects the electric drive cooling module to the cooler module, enabling the coolant to circulate between both; the fourth method connects the electric drive cooling module to the battery pack cooling module, allowing the coolant to circulate between both; and the fifth method connects the electric drive cooling module, the battery pack cooling module, and the front-end cooling module, allowing the coolant to circulate among all three modules.

[0076] In the thermal management of the battery pack, the battery pack heat dissipation module can achieve multiple connection methods through the ten-way valve 60. Specifically, the first method is that the coolant circulates only in the battery pack heat dissipation module; the second method is that the battery pack heat dissipation module is connected to the front-end heat dissipation module, and the coolant circulates between the two; the third method is that the battery pack heat dissipation module is connected to the cooler module, and the coolant circulates between the cooler module and the battery pack heat dissipation module; the fourth method is the same as the fourth method of electric drive coolant circulation; and the fifth method is the same as the fifth method of electric drive coolant circulation.

[0077] In air conditioning thermal management, the air conditioning module can achieve various refrigerant circulation modes through pipes. Specifically, the first mode connects the air conditioning module to the front-end heat dissipation module, and the refrigerant in the air conditioning module only passes through the front-end heat dissipation module; the second mode connects the air conditioning module, the front-end heat dissipation module, and the cooler module, and the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the cooler module; the third mode connects the air conditioning module, the front-end heat dissipation module, and the battery pack module, and the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the battery pack heat dissipation module; the fourth mode connects the air conditioning module, the battery pack heat dissipation module, and the cooler module, and the refrigerant in the air conditioning module passes through both the battery pack heat dissipation module and the cooler module; the fifth mode connects the air conditioning module, the front-end heat dissipation module, the battery pack heat dissipation module, and the cooler module, and the refrigerant in the air conditioning module passes through the battery pack heat dissipation module, the cooler module, and the front-end heat dissipation module. It should be noted that when the passenger compartment needs to be heated or cooled, the front evaporator 43 and the rear evaporator 44 and their corresponding valves can be opened as needed. Therefore, in this embodiment, the opening and closing of the front evaporator 43 and the rear evaporator 44 are further distinguished by the refrigerant circulation mode.

[0078] The thermal management system combines various connection methods for the electric drive unit, battery pack, and air conditioning to achieve multiple thermal management modes. See details. Figure 3 The first thermal management mode adopts the second electric drive coolant circulation method. The second electric drive coolant circulation method is as follows: the low temperature radiator 11 of the front heat dissipation module is connected to the tenth valve port 600 of the ten-way valve 60 through the first pipe 71; the low temperature radiator 11 is connected to the ninth valve port 609 of the ten-way valve 60 through the second pipe 72; the first pump body 20 of the electric drive heat dissipation module is connected to the eighth valve port 608 of the ten-way valve 60 through the third pipe 73; and the motor assembly is connected to the seventh valve port 607 of the ten-way valve 60 through the fourth pipe 74.

[0079] When the electric drive cooling module is working, the first pump body 20 drives the coolant to flow through the motor assembly and the fourth pipe 74, so that it enters the ten-way valve 60 from the seventh valve port 607; then it flows through the low-temperature radiator 11 and the second pipe 72 from the tenth valve port 600, so that it enters the ten-way valve 60 from the ninth valve port 609; finally, it flows back to the electric drive cooling module from the eighth valve port 608 through the third pipe 73 to ensure the cooling effect of the electric drive part.

[0080] See details Figure 4 The second thermal management mode adopts a combination of the second type of electric drive coolant circulation mode, the third type of battery pack coolant circulation mode, and the second type of air conditioning refrigerant circulation mode.

[0081] The third type of coolant circulation method for the battery pack is as follows: the battery pack heat dissipation module is connected to the third valve port 603 of the ten-way valve 60 through the eighth pipe 78, and the battery pack heat dissipation module is connected to the fourth valve port 604 of the ten-way valve 60 through the seventh pipe 77; the first cooling plate 50 of the cooler module is connected to the sixth valve port 606 of the ten-way valve 60 through the fifth pipe 75, and the first cooling plate 50 is connected to the fifth valve port 605 of the ten-way valve 60 through the sixth pipe 76.

[0082] When the battery pack cooling module is working, the second pump 30 not only drives the coolant to circulate within the battery pack cooling module, but also drives the coolant to flow through the cooler module and then back to the battery pack cooling module to ensure the cooling effect of the battery pack. Specifically, the second pump 30 drives the coolant to flow sequentially through the three-way valve 34 and the eighth pipe 78, so that it enters the ten-way valve 60 from the third valve port 603, then sequentially through the fifth pipe 75, the first cooling plate 50, and the sixth pipe 76 from the sixth valve port 606, so that it enters the ten-way valve 60 from the fifth valve port 605, and finally returns to the battery pack cooling module from the fourth valve port 604 through the seventh pipe 77.

[0083] The second type of refrigerant circulation mode for the air conditioner is as follows: the first solenoid valve 61 on the first branch pipe 81 is open, the second solenoid valve 62 on the second branch pipe 82 is closed, the third solenoid valve 63 on the fourth branch pipe 84 is closed, the first expansion valve 65 at the inlet end of the second cooling plate 51 is open, and the third expansion valve 67 on the fifth branch pipe 85 is open. Since the front evaporator 43 and the rear evaporator 44 are involved in this mode, the second expansion valve 66 at the inlet end of the front evaporator 43 is open, and the fourth solenoid valve 64 at the inlet end of the rear evaporator 44 is open.

[0084] When the air conditioning module is working, the refrigerant produced by the compressor 40 is delivered to the internal heat exchanger 42 to act on the front evaporator 43 and the rear evaporator 44. The refrigerant in the internal heat exchanger 42 first flows through the first branch pipe 81 and then sequentially through the external heat exchanger 10, the sixth branch pipe 86, the seventh branch pipe 87 and the fourth branch pipe 84. The refrigerant in the fourth branch pipe 84 firstly flows through the second cooling plate 51 and the ninth branch pipe 89 into the gas-liquid separator 41, secondly flows through the front evaporator 43 and the tenth branch pipe 80 into the gas-liquid separator 41, and thirdly flows through the fifth branch pipe 85, the rear evaporator 44 and the tenth branch pipe 80 into the gas-liquid separator 41.

[0085] See details Figure 5 The third thermal management mode adopts a combination of the fifth type of electric drive / battery pack coolant circulation mode and the first type of air conditioning refrigerant circulation mode.

[0086] The fifth type of coolant circulation method for electric drive is as follows: the low-temperature radiator 11 of the front-end heat dissipation module is connected to the third valve port 603 of the ten-way valve 60 through the first pipe 71 and to the second valve port 601 of the ten-way valve 60 through the second pipe 72; the electric drive heat dissipation module is connected to the first valve port 601 of the ten-way valve 60 through the third pipe 73 and to the tenth valve port 600 of the ten-way valve 60 through the fourth pipe 74; the battery pack heat dissipation module is connected to the seventh valve port 607 of the ten-way valve 60 through the seventh pipe 77 and to the sixth valve port 606 of the ten-way valve 60 through the eighth pipe 78.

[0087] When the electric drive cooling module and the battery pack cooling module are working, the second pump 30 not only drives the coolant to circulate in the battery pack cooling module, but also drives the coolant to flow into the cooler module and the electric drive cooling module before returning to the battery pack cooling module, so that the coolant in both the electric drive cooling module and the battery pack cooling module can be cooled in the front-end cooling module and the cooler module. Specifically, the second pump 30 drives the coolant to flow sequentially through the three-way valve 34 and the eighth pipe 78, so as to enter the ten-way valve 60 from the sixth valve port 606, then sequentially through the first pipe 71, the low-temperature radiator 11 and the second pipe 72 from the third valve port 603, so as to enter the ten-way valve 60 from the second valve port 601, then sequentially through the third pipe 73, the motor assembly and the fourth pipe 74 from the first valve port 601, so as to enter the ten-way valve 60 from the tenth valve port 600, and finally return to the battery pack cooling module from the seventh valve port 607 through the seventh pipe 77.

[0088] The refrigerant circulation method of the first type of air conditioner is as follows: the first solenoid valve 61 on the first branch pipe 81 is open, the second solenoid valve 62 on the second branch pipe 82 is closed, the third solenoid valve 63 on the fourth branch pipe 84 is closed, the first expansion valve 65 at the inlet end of the second cooling plate 51 is closed, and the third expansion valve 67 on the fifth branch pipe 85 is open. Since the front evaporator 43 and the rear evaporator 44 are involved in the operation in this mode, the second expansion valve 66 at the inlet end of the front evaporator 43 is open, and the fourth solenoid valve 64 at the inlet end of the rear evaporator 44 is open.

[0089] When the air conditioning module is working, the refrigerant produced by the compressor 40 is delivered to the internal heat exchanger 42 to act on the front evaporator 43 and the rear evaporator 44. The refrigerant in the internal heat exchanger 42 first flows through the first branch pipe 81 and then sequentially through the external heat exchanger 10, the sixth branch pipe 86, the seventh branch pipe 87 and the fourth branch pipe 84. The refrigerant in the fourth branch pipe 84 firstly flows through the front evaporator 43 and the tenth branch pipe 80 into the gas-liquid separator 41, and secondly flows through the fifth branch pipe 85, the rear evaporator 44 and the tenth branch pipe 80 into the gas-liquid separator 41.

[0090] See details Figure 6 The fourth thermal management mode adopts a combination of the first electric drive coolant circulation method, the first battery pack coolant circulation method, and the third battery pack coolant circulation method.

[0091] The first type of coolant circulation method for electric drive is as follows: the electric drive heat dissipation module is connected to two interconnected valve ports of the ten-way valve 60 through the third pipe 73 and the fourth pipe 74. In this embodiment, it is preferred that the third pipe of the electric drive heat dissipation module is connected to the ninth valve port 609 of the ten-way valve 60, and the fourth pipe 74 is connected to the eighth valve port 608 of the ten-way valve 60.

[0092] When the electric drive cooling module is working, the first pump body 20 drives the coolant to flow through the motor assembly and the fourth pipe 74, so as to enter the ten-way valve 60 from the eighth valve port 608; finally, it flows back to the electric drive cooling module from the ninth valve port 609 through the third pipe 73 to ensure the heat preservation effect of the electric drive part.

[0093] The first type of coolant circulation method for the battery pack is as follows: neither the seventh pipe 77 nor the eighth pipe 78 of the battery pack heat dissipation module is connected to the ten-way valve 60. When the battery pack heat dissipation module is working, the second pump 30 drives the coolant to circulate in the battery cold plate 31 and the first heat exchange plate 32.

[0094] The refrigerant circulation method of the third type of air conditioner is as follows: the first solenoid valve 61 on the first branch pipe 81 is closed, the second solenoid valve 62 on the second branch pipe 82 is open, the third solenoid valve 63 on the fourth branch pipe 84 is open, the first expansion valve 65 at the inlet end of the second cooling plate 51 is closed, and the third expansion valve 67 on the fifth branch pipe 85 is open. Since the front evaporator 43 and the rear evaporator 44 do not participate in the operation in this mode, the second expansion valve 66 at the inlet end of the front evaporator 43 is closed, and the fourth solenoid valve 64 at the inlet end of the rear evaporator 44 is closed.

[0095] When the air conditioning module is working, the refrigerant produced by the compressor 40 first flows through the internal heat exchanger 42 and the third branch pipe 83 in sequence into the second heat exchange plate 33 to exchange heat with the refrigerant in the first heat exchange plate 32; the refrigerant in the second heat exchange plate 33 then flows through the fourth branch pipe 84, the eighth branch pipe 88, the sixth branch pipe 86, the external heat exchanger 10 and the second branch pipe 82 in sequence into the gas-liquid separator 41.

[0096] See details Figure 7 The fifth thermal management mode adopts a combination of the third type of electric drive coolant circulation mode, the first type of electric drive coolant circulation mode, and the fifth type of air conditioning refrigerant circulation mode.

[0097] The third type of coolant circulation method for electric drive is as follows: the first pump body 20 of the electric drive heat dissipation module is connected to the tenth valve port 600 of the ten-way valve 60 through the third pipe 73, and the motor assembly is connected to the ninth valve port 609 of the ten-way valve 60 through the fourth pipe 74; the cooler module is connected to the eighth valve port 608 of the ten-way valve 60 through the fifth pipe 75, and to the seventh valve port 607 of the ten-way valve 60 through the sixth pipe 76.

[0098] When the electric drive cooling module is working, the first pump body 20 drives the coolant to flow through the motor assembly and the fourth pipe 74, so as to enter the ten-way valve 60 from the ninth valve port 609; then it flows through the fifth pipe 75, the first cooling plate 50 and the sixth pipe 76 from the eighth valve port 608, so as to enter the ten-way valve 60 from the seventh valve port 607; and finally it flows back to the electric drive cooling module from the tenth valve port 600 through the third pipe 73.

[0099] The operating principle of the first type of battery pack coolant circulation method has been disclosed above and will not be repeated here.

[0100] The fifth type of refrigerant circulation mode for the air conditioner is as follows: the first solenoid valve 61 on the first branch pipe 81 is closed, the second solenoid valve 62 on the second branch pipe 82 is open, the third solenoid valve 63 on the fourth branch pipe 84 is open, the first expansion valve 65 at the inlet end of the second cooling plate 51 is open, and the third expansion valve 67 on the fifth branch pipe 85 is open. Since the front evaporator 43 and the rear evaporator 44 do not participate in the operation in this mode, the second expansion valve 66 at the inlet end of the front evaporator 43 is closed, and the fourth solenoid valve 64 at the inlet end of the rear evaporator 44 is closed.

[0101] When the air conditioning module is working, the refrigerant produced by the compressor 40 first flows sequentially through the internal heat exchanger 42, the third branch pipe 83, and the second heat exchange plate 33 into the fourth branch pipe 84; the refrigerant in the fourth branch pipe 84 firstly flows sequentially through the second cooling plate 51 and the ninth branch pipe 89 into the gas-liquid separator 41, and secondly flows sequentially through the fifth branch pipe 85, the eighth branch pipe 88, the sixth branch pipe 86, the external heat exchanger 10, and the second branch pipe 82 into the gas-liquid separator 41.

[0102] See details Figure 8 The sixth thermal management mode adopts a combination of the fourth type of electric drive / battery pack coolant circulation mode with the first type of electric drive coolant circulation mode and the third type of air conditioning refrigerant circulation mode.

[0103] The fourth type of coolant circulation method for the electric drive / battery pack is as follows: the electric drive heat dissipation module is connected to the seventh valve port 607 of the ten-way valve 60 through the third pipe 73, and to the sixth valve port 606 of the ten-way valve 60 through the fourth pipe 74; the battery pack heat dissipation module is connected to the third valve port 603 of the ten-way valve 60 through the seventh pipe 77, and to the second valve port 601 of the ten-way valve 60 through the eighth pipe 78; the two ends of the ninth pipe 79 are connected to the tenth valve port 600 and the first valve port 601 of the ten-way valve 60 respectively.

[0104] When the electric drive cooling module and the battery pack cooling module are working, the first pump 20 in the electric drive cooling module drives the coolant to flow sequentially through the battery assembly, the fourth pipe 74, the sixth valve port 606, the third valve port 603 and the seventh pipe 77 of the ten-way valve 60 into the battery pack cooling module; the second pump 30 in the battery pack cooling module can not only drive the coolant to circulate through the battery cold plate 31 and the first heat exchange plate 32, but also drive the coolant to flow sequentially through the eighth channel, the second valve port 601, the first valve port 601 of the ten-way valve 60, the ninth pipe 79, the tenth valve port 600, the seventh valve port 607 and the third pipe 73 back to the electric drive cooling module.

[0105] The operating principle of the third type of air conditioner refrigerant circulation method has been disclosed above and will not be repeated here.

[0106] See details Figure 9The seventh thermal management mode adopts a combination of the first type of electric drive coolant circulation mode, the third type of battery pack coolant circulation mode, and the fifth type of air conditioning refrigerant circulation mode.

[0107] The electric drive cooling module is connected to the second valve port 601 of the ten-way valve 60 via the third pipe 73 and to the first valve port 601 of the ten-way valve 60 via the fourth pipe 74; the cooler module is connected to the tenth valve port 600 of the ten-way valve 60 via the fifth pipe 75 and to the ninth port of the ten-way valve 60 via the sixth pipe 76; the battery pack cooling module is connected to the eighth valve port 608 of the ten-way valve 60 via the seventh pipe 77 and to the seventh valve port 607 of the ten-way valve 60 via the eighth pipe 78. Since the operating principles of the first type of electric drive coolant circulation method, the third type of battery pack coolant circulation method, and the fifth type of air conditioner refrigerant circulation method have been disclosed above, they will not be repeated here.

[0108] See details Figure 10 The eighth thermal management mode adopts a combination of the first type of electric drive coolant circulation method, the third type of battery pack coolant circulation method, and the fourth type of air conditioning refrigerant circulation method.

[0109] The electric drive heat dissipation module, cooler module, and battery pack heat dissipation module are connected to the ten-way valve 60 in the same way as in the seventh thermal management mode.

[0110] The fourth refrigerant circulation mode of the air conditioner is as follows: the first solenoid valve 61 on the first branch pipe 81 is closed, the second solenoid valve 62 on the second branch pipe 82 is closed, the third solenoid valve 63 on the fourth branch pipe 84 is open, the first expansion valve 65 at the inlet end of the second cooling plate 51 is open, and the third expansion valve 67 on the fifth branch pipe 85 is closed. Since the front evaporator 43 and the rear evaporator 44 do not participate in the operation in this mode, the second expansion valve 66 at the inlet end of the front evaporator 43 is closed, and the fourth solenoid valve 64 at the inlet end of the rear evaporator 44 is closed.

[0111] When the air conditioning module is working, the refrigerant produced by the compressor 40 first flows through the internal heat exchanger 42, the third branch pipe 83, and the second heat exchange plate 33 in sequence into the fourth branch pipe 84. The refrigerant in the fourth branch pipe 84 flows through the second cooling plate 51 and the ninth branch pipe 89 into the gas-liquid separator 41.

[0112] like Figure 11-16 As shown, the thermal management system of this embodiment may further include the following thermal management modes: see details. Figure 11 The ninth thermal management mode employs a combination of the third type of electric drive coolant circulation method, the first type of battery pack coolant circulation method, and the fourth type of air conditioning refrigerant circulation method. See details... Figure 12The tenth thermal management mode employs a combination of the second type of electric drive coolant circulation method, the first type of battery pack coolant circulation method, and the third type of air conditioning refrigerant circulation method. See details... Figure 13 The eleventh thermal management mode employs a combination of the second type of electric drive coolant circulation method, the third type of battery pack coolant circulation method, and the third type of air conditioning refrigerant circulation method. Its structural difference from the second thermal management mode lies only in the fact that the second expansion valve 66 at the evaporator inlet is closed, and the fourth solenoid valve at the rear evaporator inlet 44 is closed. See details... Figure 14 The twelfth thermal management mode adopts the fifth type of coolant circulation method for the electric drive / battery pack. See details... Figure 15 The thirteenth thermal management mode employs the fourth type of coolant circulation method for the electric drive / battery pack. See details... Figure 16 The fourteenth thermal management mode adopts the third type of electric drive coolant circulation method.

[0113] The ten-way valve 60 in this embodiment is designed for the front-end heat dissipation module, electric drive heat dissipation module, cooler module, and battery pack heat dissipation module arranged in this embodiment. The ten valve ports of this ten-way valve 60 only need to be rotated at different angles to connect to the pipes of different modules, thus enabling the front-end heat dissipation module, electric drive heat dissipation module, cooler module, and battery pack heat dissipation module to form multiple coolant circulation modes. Its structure is simple and easy to control. Combining multiple coolant circulation modes with multiple refrigerant circulation modes allows the entire thermal management system to form multiple thermal management modes. This thermal management system has a simple structure, high integration, and can meet different needs such as heating, cooling, and heat generation.

[0114] Example 2

[0115] See details Figure 17 In this embodiment, the first solenoid valve 61, the second solenoid valve 62, and the third solenoid valve 63 are integrated into a two-position eight-way valve 90, and the second one-way valve 68 and the third one-way valve 69 are eliminated. Specifically, as shown... Figure 18 As shown, the two-position eight-way valve 90 includes an A port for the medium to enter. The A port is connected to the first chamber 91 through the first branch channel 911 and the second branch channel 912. The first chamber 91 is connected to the second chamber 92 through the first branch port 921, the second branch port 922 and the third branch port 923 arranged in sequence. The second chamber 92 has B port, C port, F port, G port, H port, E port and D port arranged in sequence to connect to the outside.

[0116] In this embodiment, a first piston 93 is provided in the first chamber 91. The first piston 93 has a first blocking part 931 for blocking the first branch channel 911 and a second blocking part 932 for blocking the second branch channel 912. When the first blocking part 931 blocks the first branch channel 911, the first branch port 921 and the second branch port 922 are located between the first blocking part 931 and the second blocking part 932, and the second branch channel 912 is connected to the second chamber 92 through the third branch port 923. When the second blocking part 932 blocks the second branch channel 912, the second branch port 922 and the third branch port 923 are located between the first blocking part 931 and the second blocking part 932, and the first branch channel 911 is connected to the second chamber 92 through the first branch port 921. The second chamber 92 contains a second piston 94, on which third to seventh sealing portions 945 are sequentially formed. When the third sealing portion 941 opens the B port, the C and F ports are located between the third sealing portion 941 and the fourth sealing portion 942, the G and H ports are located between the fourth sealing portion 942 and the fifth sealing portion 943, and the second diversion port 922, the E port, and the D port are located between the sixth sealing portion 944 and the seventh sealing portion 945. At this time, the second diversion channel 912 is connected to the outside through the second chamber 92, the E port, and the D port, and the first diversion port 921 is connected through the second chamber 92. Chamber 92 and interface B are connected to the outside. When the seventh sealing section 945 opens interface D, interfaces B and C are located between the third sealing section 941 and the fourth sealing section 942, interfaces F and G are located between the fourth sealing section 942 and the fifth sealing section 943, interface H is located between the fifth sealing section 943 and the sixth sealing section 944, and the second diversion port 922 and interface E are located between the sixth sealing section 944 and the seventh sealing section 945. At this time, the second diversion port 922 is connected to the outside through the second chamber 92 and interface E, and the third diversion port 923 is connected to the outside through the second chamber 92 and interface D.

[0117] In this embodiment, the portion of the first branch pipe 81 from the internal heat exchanger to the first solenoid valve is connected to port A, and the portion of the first solenoid valve of the first branch pipe 81 from the external heat exchanger is connected to port D; the second branch pipe 82 is connected to the gas-liquid separator 41 from port E; the third branch pipe 83 is connected to the second heat exchange plate 33 from port B; the portion of the fourth branch pipe 84 from the second heat exchange plate 33 to the third solenoid valve 63 is connected to port C, and the portion of the third solenoid valve 63 of the fourth branch pipe 84 from the second end is connected to port F; the sixth branch pipe 86 is connected to the external heat exchanger from port G; and the eighth branch pipe 88 is connected to port H via the seventh branch pipe 87. This embodiment reduces the number of joints and valves between pipes, making the control of the thermal management system more convenient.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A thermal management system for a vehicle, characterized in that, include: Front-end heat dissipation module, battery pack heat dissipation module, electric drive heat dissipation module, air conditioning module, cooler module and ten-way valve (60); The front-end heat dissipation module includes an external heat exchanger (10) and a low-temperature heat sink (11); An electric drive cooling module, comprising a first pump body (20) and a motor assembly connected in series; The battery pack heat dissipation module includes a closed loop formed by connecting a second pump body (30), a battery cold plate (31) and a battery heat exchanger, wherein the battery heat exchanger includes a first heat exchange plate (32) for introducing coolant and a second heat exchange plate (33) for introducing refrigerant. An air conditioning module includes a gas-liquid separator (41), a compressor (40) and an internal heat exchanger (42) connected in series, the internal heat exchanger (42) being connected to a front evaporator (43), a rear evaporator (44) and a heater (45); The cooler module includes a first cooling plate (50) for introducing coolant and a second cooling plate (51) for introducing refrigerant; A ten-way valve (60) includes a first to a tenth valve port distributed sequentially along the circumference, wherein the first valve port (601) is connected to the second valve port (601), the third valve port (603) is connected to the sixth valve port (606), the fourth valve port (604) is connected to the fifth valve port (605), the seventh valve port (607) is connected to the tenth valve port (600), and the eighth valve port (608) is connected to the ninth valve port (609); The first end of the low-temperature radiator (11) is connected to the ten-way valve (60) via a first pipe (71), and the second end of the low-temperature radiator (11) is connected to the ten-way valve (60) via a second pipe (72); the inlet end of the first pump body (20) is connected to the ten-way valve (60) via a third pipe (73), and the outlet end of the motor assembly is connected to the ten-way valve (60) via a fourth pipe (74); the inlet end of the first cooling plate (50) is connected to the ten-way valve (60) via a fifth pipe (75). The outlet end of the first cooling plate (50) is connected to the ten-way valve (60) via the sixth pipe (76); the inlet end of the second pump body (30) is connected to the ten-way valve (60) via the seventh pipe (77); the inlet end of the battery cooling plate (31) is connected to the ten-way valve (60) via the three-way valve (34) and the eighth pipe (78); the thermal management system also includes a ninth pipe (79), both ends of which are connected to the ten-way valve (60); The front-end heat dissipation module, the electric drive heat dissipation module, and the battery pack heat dissipation module work together with a ten-way valve (60) to achieve coolant circulation. The coolant circulation methods include: a first electric drive coolant circulation method, in which the coolant circulates within the electric drive heat dissipation module; a second electric drive coolant circulation method, in which the coolant circulates between the electric drive heat dissipation module and the front-end heat dissipation module; a third electric drive coolant circulation method, in which the coolant circulates between the electric drive heat dissipation module and the cooler module; a first battery pack coolant circulation method, in which the coolant circulates within the battery pack heat dissipation module; a second battery pack coolant circulation method, in which the coolant circulates between the battery pack heat dissipation module and the front-end heat dissipation module; a third battery pack coolant circulation method, in which the coolant circulates between the cooler module and the battery pack heat dissipation module; a fourth electric drive / battery pack coolant circulation method, in which the coolant circulates between the electric drive heat dissipation module and the battery pack heat dissipation module; and a fifth electric drive / battery pack coolant circulation method, in which the coolant circulates within the electric drive heat dissipation module, the battery pack heat dissipation module, and the front-end heat dissipation module.

2. The thermal management system according to claim 1, characterized in that: The outlet end of the internal heat exchanger (42) is connected to the first end of the external heat exchanger (10) through the first branch pipe (81), and the first branch pipe (81) is provided with a first solenoid valve (61); the first end of the internal heat exchanger (42) is connected to the inlet end of the gas-liquid separator (41) through the second branch pipe (82), and the second branch pipe (82) is provided with a second solenoid valve (62); the outlet end of the internal heat exchanger (42) is connected to the inlet end of the second heat exchange plate (33) through the third branch pipe (83), the outlet end of the second heat exchange plate (33) is connected to the first end of the fourth branch pipe (84), the second end of the fourth branch pipe (84) is connected to the inlet end of the second cooling plate (51) and the front evaporator (43), wherein the fourth branch pipe (84) is provided with a third solenoid valve (63), the inlet end of the second cooling plate (51) is provided with a first expansion valve (65), and the inlet end of the front evaporator (43) is provided with a second expansion valve (66); The second end of the fourth branch pipe (84) is connected to the first end of the fifth branch pipe (85), the second end of the fifth branch pipe (85) is connected to the inlet end of the rear evaporator (44), the fifth branch pipe (85) is provided with a third expansion valve (67), and the inlet end of the rear evaporator (44) is provided with a fourth solenoid valve (64); the second end of the external heat exchanger (10) is provided with a sixth branch pipe (86), and the sixth branch pipe (86) is provided with a seventh branch pipe (87) connected between the third solenoid valve (63) and the second end of the fourth branch pipe (84); The sixth branch pipe (86) is provided with a second one-way valve (68) to control the flow of refrigerant to the fourth branch pipe (84). The sixth branch pipe (86) is also provided with an eighth branch pipe (88) connected to the second end of the fifth branch pipe (85). The eighth branch pipe (88) is provided with a third one-way valve (69) to control the flow of refrigerant to the sixth branch pipe (86). The outlet end of the second cooling plate (51) is connected to the inlet end of the gas-liquid separator (41) through the ninth branch pipe (89). The outlet ends of the front evaporator (43) and the rear evaporator (44) are connected to the inlet end of the gas-liquid separator (41) through the tenth branch pipe (80). The air conditioning module circulates refrigerant through pipes. The refrigerant circulation methods include: a first method where the refrigerant in the air conditioning module passes through the front-end heat dissipation module; a second method where the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the cooler module; a third method where the refrigerant in the air conditioning module passes through both the front-end heat dissipation module and the battery pack heat dissipation module; a fourth method where the refrigerant in the air conditioning module passes through both the battery pack heat dissipation module and the cooler module; and a fifth method where the refrigerant in the air conditioning module passes through the battery pack heat dissipation module, the cooler module, and the front-end heat dissipation module.

3. The thermal management system according to claim 1 or 2, characterized in that: The first type of electric drive coolant circulation method is as follows: the electric drive heat dissipation module is connected to two interconnected valve ports of the ten-way valve (60) through the third pipe (73) and the fourth pipe (74); The coolant circulation method of the first type of battery pack is as follows: the seventh pipe (77) and the eighth pipe (78) of the battery pack heat dissipation module are not connected to the ten-way valve (60).

4. The thermal management system according to claim 3, characterized in that: The second type of electric drive coolant circulation method is as follows: the low temperature radiator (11) is connected to the tenth valve port (600) through the first pipe (71) and to the ninth valve port (609) through the second pipe (72); the electric drive heat dissipation module is connected to the eighth valve port (608) through the third pipe (73) and to the seventh valve port (607) through the fourth pipe (74); The third type of coolant circulation method for electric drive is as follows: the electric drive heat dissipation module is connected to the tenth valve port (600) through the third pipe (73) and to the ninth valve port (609) through the fourth pipe (74); the cooler module is connected to the eighth valve port (608) through the fifth pipe (75) and to the seventh valve port (607) through the sixth pipe (76).

5. The thermal management system according to claim 4, characterized in that: The second type of electric drive coolant circulation method is as follows: the low temperature radiator (11) is connected to the tenth valve port (600) through the first pipe (71) and to the ninth valve port (609) through the second pipe (72); the electric drive heat dissipation module is connected to the eighth valve port (608) through the third pipe (73) and to the seventh valve port (607) through the fourth pipe (74); The coolant circulation method of the third type of battery pack is as follows: the battery pack heat dissipation module is connected to the third valve port (603) through the eighth pipe (78) and to the fourth valve port (604) through the seventh pipe (77); the first cooling plate (50) is connected to the sixth valve port (606) through the fifth pipe (75) and to the fifth valve port (605) through the sixth pipe (76).

6. The thermal management system according to claim 5, characterized in that: The fourth type of coolant circulation method for the electric drive / battery pack is as follows: the electric drive heat dissipation module is connected to the seventh valve port (607) of the ten-way valve (60) through the third pipe (73) and to the sixth valve port (606) of the ten-way valve (60) through the fourth pipe (74); the battery pack heat dissipation module is connected to the third valve port (603) of the ten-way valve (60) through the seventh pipe (77) and to the second valve port (601) of the ten-way valve (60) through the eighth pipe (78); the two ends of the ninth pipe (79) are connected to the tenth valve port (600) and the first valve port (601) of the ten-way valve (60) respectively. The fifth type of coolant circulation method for electric drive / battery pack is as follows: the low-temperature radiator (11) of the front-end heat dissipation module is connected to the third valve port (603) of the ten-way valve (60) through the first pipe (71), and to the second valve port (601) of the ten-way valve (60) through the second pipe (72); the electric drive heat dissipation module is connected to the first valve port (601) of the ten-way valve (60) through the third pipe (73), and to the tenth valve port (600) of the ten-way valve (60) through the fourth pipe (74); the battery pack heat dissipation module is connected to the seventh valve port (607) of the ten-way valve (60) through the seventh pipe (77), and to the sixth valve port (606) of the ten-way valve (60) through the eighth pipe (78).

7. The thermal management system according to claim 2, characterized in that: The refrigerant circulation mode of the first type of air conditioner is as follows: the first solenoid valve (61) on the first branch pipe (81) is open, the second solenoid valve (62) on the second branch pipe (82) is closed, the third solenoid valve (63) on the fourth branch pipe (84) is closed, the first expansion valve (65) at the inlet end of the second cooling plate (51) is closed, and the third expansion valve (67) on the fifth branch pipe (85) is open. The refrigerant circulation method of the second type of air conditioner is as follows: the first solenoid valve (61) on the first branch pipe (81) is open, the second solenoid valve (62) on the second branch pipe (82) is closed, the third solenoid valve (63) on the fourth branch pipe (84) is closed, the first expansion valve (65) at the inlet end of the second cooling plate (51) is open, and the third expansion valve (67) on the fifth branch pipe (85) is open. The refrigerant circulation mode of the third type of air conditioner is as follows: the first solenoid valve (61) on the first branch pipe (81) is closed, the second solenoid valve (62) on the second branch pipe (82) is open, the third solenoid valve (63) on the fourth branch pipe (84) is open, the first expansion valve (65) at the inlet end of the second cooling plate (51) is closed, and the third expansion valve (67) on the fifth branch pipe (85) is open. The refrigerant circulation mode of the fourth type of air conditioner is as follows: the first solenoid valve (61) on the first branch pipe (81) is closed, the second solenoid valve (62) on the second branch pipe (82) is closed, the third solenoid valve (63) on the fourth branch pipe (84) is open, the first expansion valve (65) at the inlet end of the second cooling plate (51) is open, and the third expansion valve (67) on the fifth branch pipe (85) is closed. The refrigerant circulation mode of the fifth type of air conditioner is as follows: the first solenoid valve (61) on the first branch pipe (81) is closed, the second solenoid valve (62) on the second branch pipe (82) is open, the third solenoid valve (63) on the fourth branch pipe (84) is open, the first expansion valve (65) at the inlet end of the second cooling plate (51) is open, and the third expansion valve (67) on the fifth branch pipe (85) is open.

8. The thermal management system according to claim 2, characterized in that: The first solenoid valve (61), the second solenoid valve (62) and the third solenoid valve (63) are integrated into a two-position eight-way valve (90), and the second check valve (68) and the third check valve (69) are eliminated; The two-position eight-way valve (90) includes an A port for the medium to enter. The A port is connected to the first chamber (91) through the first branch channel (911) and the second branch channel (912). The first chamber (91) is connected to the second chamber (92) through the first branch port (921), the second branch port (922) and the third branch port (923) arranged in sequence. The second chamber (92) is provided with B port, C port, F port, G port, H port, E port and D port arranged in sequence to connect to the outside. The first chamber (91) is provided with a first piston (93), on which a first blocking part (931) for blocking the first diversion channel (911) and a second blocking part (932) for blocking the second diversion channel (912) are formed; when the first blocking part (931) blocks the first diversion channel (911), the first diversion port (921) and the second diversion port (922) are located at the first blocking part (931) and the second diversion port (922). Between the blocking parts (932), the second diversion channel (912) is connected to the second chamber (92) through the third diversion port (923); when the second blocking part (932) blocks the second diversion channel (912), the second diversion port (922) and the third diversion port (923) are located between the first blocking part (931) and the second blocking part (932), and the first diversion channel (911) is connected to the second chamber (92) through the first diversion port (921); The second chamber (92) is provided with a second piston (94), and the second piston (94) is sequentially formed with a third to a seventh sealing part. When the third sealing part (941) opens the B interface, the C interface and the F interface are located between the third sealing part (941) and the fourth sealing part (942), the G interface and the H interface are located between the fourth sealing part (942) and the fifth sealing part (943), and the second diversion port (922), the E interface and the D interface are located between the sixth sealing part (944) and the seventh sealing part (945). At this time, the second diversion channel (912) is connected to the outside through the second chamber (92), the E interface and the D interface, and the first diversion port (921) is connected to the outside through the second chamber (92) and the B interface. When the seventh sealing section (945) opens the D interface, the B interface and the C interface are located between the third sealing section (941) and the fourth sealing section (942), the F interface and the G interface are located between the fourth sealing section (942) and the fifth sealing section (943), the H interface is located between the fifth sealing section (943) and the sixth sealing section (944), the second diversion port (922) and the E interface are located between the sixth sealing section (944) and the seventh sealing section (945). At this time, the second diversion port (922) is connected to the outside through the second chamber (92) and the E interface, and the third diversion port (923) is connected to the outside through the second chamber (92) and the D interface.

9. The thermal management system according to claim 8, characterized in that: The portion of the first branch pipe (81) from the internal heat exchanger (42) to the first solenoid valve (61) is connected to the A port, and the portion of the first solenoid valve (61) of the first branch pipe (81) from the external heat exchanger (10) is connected to the D port; the second branch pipe (82) is connected to the gas-liquid separator (41) from the E port; the third branch pipe (83) is connected to the second heat exchange plate (33) from the B port; the portion of the fourth branch pipe (84) from the second heat exchange plate (33) to the third solenoid valve (63) is connected to the C port, and the portion of the third solenoid valve (63) of the fourth branch pipe (84) from the second end is connected to the F port; the sixth branch pipe (86) is connected to the external heat exchanger (10) from the G port; and the eighth branch pipe (88) is connected to the H port through the seventh branch pipe (87).

10. A car, characterized in that, The thermal management system of the vehicle as described in any one of claims 1-9.

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