Range-extending type thermal management system and automobile

Abstract

The invention belongs to the technical field of automobiles, and relates to a range-extended thermal management system and an automobile, the range-extended 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, an internal cooling module, an engine heat dissipation module and a cooling liquid control valve; the front-end heat dissipation module, the electric heat dissipation module, the internal cooling module, the battery pack heat dissipation module and the engine heat dissipation module are used in cooperation with the cooling liquid control valve, the heat management system achieves multiple cooling liquid circulation modes by rotating a valve element, and one cooling liquid circulation mode can be switched every time the cooling liquid control valve rotates by 60 degrees. Especially in a low-temperature environment, heat in the engine heat dissipation module can exchange heat with other modules so as to reasonably utilize heat generated by an engine, and the engine heat dissipation module is simple in structure, convenient to control and capable of meeting different heat management requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of automobiles, and in particular to an extended-range thermal management system and an automobile. Background Art

[0002] With the development of new energy vehicles, the extended-range thermal management system of automobiles has become more and more sophisticated. The extended-range thermal management system includes the front-end cooling module, battery pack cooling module, electric drive cooling module, air conditioning module, internal cooling module and engine cooling module. The structural integration of multiple modules is low, the overall architecture is very complex, the refrigerant and coolant pipeline layout is relatively cumbersome, the heat energy cannot be reasonably utilized and it is not easy to control. Summary of the invention

[0003] Based on this, the present invention provides an extended-range thermal management system and a vehicle to improve the problems of the existing thermal management system being complex in structure and inconvenient to control.

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

[0005] A front-end heat dissipation module, which includes an external heat exchanger and a low-temperature radiator arranged in parallel;

[0006] An electric drive heat dissipation module, comprising a motor assembly and a first pump body connected in series, wherein the first pump body is located at a liquid outlet side of the motor assembly;

[0007] A battery pack heat dissipation module, comprising a battery cold plate, a battery heat exchanger and a second pump body connected in series, wherein a first three-way valve and a battery bypass pipe are provided at a liquid inlet end of the battery cold plate and connected to a liquid inlet end of the second pump body;

[0008] An air conditioning module, comprising a gas-liquid separator, a compressor and an internal heat exchanger connected in series, wherein the internal heat exchanger is connected to a front evaporator, a rear evaporator and a heater;

[0009] An internal cooling module, comprising a first cooling plate for passing a cooling liquid and a second cooling plate for passing a refrigerant;

[0010] An engine cooling module, comprising a third pump body, an engine water channel and a second radiator connected in series;

[0011] A coolant control valve, comprising a fixed valve body and a rotatable valve core, wherein the valve body is sequentially formed with an α valve port, a β valve port, a γ valve port, a δ valve port, an ε valve port, a ζ valve port and an η valve port along its circumference, wherein the γ valve port, the δ valve port, the ε valve port, the ζ valve port and the η valve port are in strip shape, and the center angle between adjacent valve ports is 30°; the valve core is provided with first to third valve channels in arc shape, wherein the center angles of both ends of the first valve channel are 150°; the second valve channel is located on the inner side of the curved path of the first valve channel and has the same bending direction as the first valve channel, and the center angles of both ends of the second valve channel are 90°; the third valve channel is located on the outer side of the curved path of the first valve channel and has the opposite bending direction to the first valve channel, and the center angles of both ends of the third valve channel are 60°, so as to connect two adjacent valve ports of the valve body;

[0012] The first end of the low-temperature radiator is connected to the α valve port through a first coolant pipeline, and the second end of the low-temperature radiator is connected to the β valve port through a second coolant pipeline; the liquid outlet end of the first pump body is connected to the second coolant pipeline to communicate with the β valve port, and the liquid inlet end of the motor assembly is connected to the γ valve port through a third coolant pipeline; the liquid outlet end of the second pump body is connected to the δ valve port through a fourth coolant pipeline, and the liquid inlet end of the first three-way valve is connected to the ε valve port through a fifth coolant pipeline; the liquid inlet end of the first cooling plate is connected to the ζ valve port through a sixth coolant pipeline, and the liquid outlet end of the first cooling plate is connected to the η valve port through a seventh coolant pipeline; the liquid outlet end of the engine water channel is connected to the sixth coolant pipeline through a third engine pipeline, and the liquid inlet end of the third pump body is connected to the seventh coolant pipeline through a fourth engine pipeline and a second three-way valve;

[0013] The valve core is controlled to rotate at an angle of 60° each time to adjust the circulation mode of the coolant in the front end heat dissipation module, the electric drive heat dissipation module, the battery pack heat dissipation module, the internal cooling module and the engine heat dissipation module.

[0014] In some embodiments, the coolant circulation method includes a battery pack-electric drive heat dissipation module circulation method, at which time the valve core is 0°, the first valve channel connects the β valve port and the ε valve port, the second valve channel connects the γ valve port and the δ valve port, and the third valve channel connects the ζ valve port and the η valve port, so that the coolant circulates in the battery pack heat dissipation module and the electric drive heat dissipation module.

[0015] In some embodiments, the coolant circulation mode includes a battery pack-internal cooling module / engine cooling module circulation mode. At this time, the valve core rotates 60°, the first valve channel connects the δ valve port and the η valve port, the second valve channel connects the α valve port and the γ valve port, and the third valve channel connects the ε valve port and the ζ valve port, so that the coolant can circulate in the battery pack cooling module and the internal cooling module or in the battery pack cooling module and the engine cooling module.

[0016] In some embodiments, the coolant circulation mode includes electric drive-internal cooling module / engine cooling module circulation and battery pack self-circulation mode. At this time, the valve core rotates 120°, the first valve channel connects the ζ valve port and the γ valve port, the second valve channel connects the β valve port and the η valve port, and the third valve channel connects the δ valve port and the ε valve port, so that the coolant can circulate in the electric drive cooling module and the internal cooling module or the engine cooling module, and the coolant can self-circulate in the battery pack cooling module.

[0017] In some embodiments, the coolant circulation mode includes a battery pack-front-end heat dissipation-electric drive heat dissipation module circulation mode. At this time, the valve core rotates 180°, the first valve channel connects the α valve port and the ε valve port, the second valve channel connects the ζ valve port and the η valve port, and the third valve channel connects the γ valve port and the δ valve port, so that the coolant can circulate in the battery pack heat dissipation module, the front-end heat dissipation module and the electric drive heat dissipation module.

[0018] In some embodiments, the coolant circulation method includes battery pack-internal cooling module / engine cooling module circulation and electric drive cooling module self-circulation. At this time, the valve core rotates 240°, the first valve channel connects the δ valve port and the η valve port, the second valve channel connects the ε valve port and the ζ valve port, and the third valve channel connects the β valve port and the γ valve port, so that the coolant can circulate in the battery pack cooling module and the internal cooling module / the engine cooling module and the coolant can self-circulate in the electric drive cooling module.

[0019] In some embodiments, a refrigerant control valve is provided between the front-end heat dissipation module, the battery pack heat dissipation module, the air conditioning module and the internal cooling module, and one side of the refrigerant control valve includes a C interface, a G interface, an E interface, and an A interface distributed in sequence, and the other side includes a B interface, an F interface, an H interface and a D interface distributed in sequence;

[0020] The liquid outlet end of the internal heat exchanger is connected to the A interface through the first refrigerant pipe; the liquid inlet end of the second heat exchange plate is connected to the B interface through the second refrigerant pipe; the liquid outlet end of the second heat exchange plate is connected to the C interface through the third refrigerant pipe; the second end of the external heat exchanger is connected to the D interface through the fourth refrigerant pipe; the liquid outlet ends of the front evaporator and the rear evaporator are connected to the E interface through the fifth refrigerant pipe; the liquid inlet ends of the front evaporator, the rear evaporator and the second cooling plate are connected to the F interface through the sixth refrigerant pipe, wherein the liquid inlet end of the front evaporator is provided with a first expansion valve, the liquid inlet end of the rear evaporator is provided with a second expansion valve, the liquid inlet end of the second cooling plate is provided with a third expansion valve, and the liquid outlet end of the second cooling plate is connected to the liquid inlet end of the gas-liquid separator; the first end of the external heat exchanger is connected to the G interface through the seventh refrigerant pipe; an eighth refrigerant pipe is provided between the rear evaporator and the second expansion valve and connected to the H interface.

[0021] In some embodiments, during heating, interface A is connected to interface B, interface C is connected to interface F, interface D is connected to interface E, and interface G is connected to interface H; during cooling, interface B, interface C, interface E and interface H are disconnected, interface A is connected to interface D, and interface G is connected to interface F.

[0022] In some embodiments, the electric drive heat dissipation module also includes a first radiator arranged in parallel with the low-temperature radiator, the first end of the first radiator is connected to the first end of the low-temperature radiator through a first front-end heat dissipation pipe, the second end of the first radiator is connected to the liquid inlet end of the second pump body through a second front-end heat dissipation pipe, and a supercharged air cooler is arranged on the second front-end heat dissipation pipe.

[0023] According to an embodiment of the present invention, a second aspect provides a car, in which the aforementioned extended-range thermal management system is configured.

[0024] In the extended-range thermal management system of the present invention, the front-end heat dissipation module, the electric drive heat dissipation module, the internal cooling module, the engine heat dissipation module and the battery pack heat dissipation module are used in conjunction with the coolant control valve. By rotating the valve core, the extended-range thermal management system can realize a variety of coolant circulation modes. The coolant control valve can switch a coolant circulation mode every 60° rotation. Especially in a low-temperature environment, the heat in the engine heat dissipation module can undergo heat exchange with the other modules to rationally utilize the heat generated by the engine. It has a simple structure, is easy to control, and can meet different thermal management requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the extended-range thermal management system of this embodiment in a heating state;

[0026] Figure 2 It is a schematic structural diagram of the extended-range thermal management system of this embodiment in a cooling state;

[0027] Figure 3 is a schematic structural diagram of the coolant control valve of this embodiment;

[0028] Figure 4 Schematic diagram of the structure of the refrigerant control valve of this embodiment.

[0029] In the figure: external heat exchanger 10; low-temperature radiator 11; first radiator 12; external fan 13; active air intake grille 14; first front end heat dissipation pipeline 15; second front end heat dissipation pipeline 16; supercharged air cooler 17; first pump body 20; first motor 21; second motor 22; second pump body 30; battery cold plate 31; first heat exchange plate 32; second heat exchange plate 33; first three-way valve 34; battery bypass pipe 35; 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; third pump body 60; engine water channel 61; second radiator 62; first engine pipeline 63; second engine pipeline 64 ; third engine pipeline 65; fourth engine pipeline 66; second three-way valve 67; coolant control valve 70; first valve channel 71; second valve channel 72; third valve channel 73; refrigerant control valve 74; first expansion valve 75; second expansion valve 76; third expansion valve 77; first coolant pipeline 81; second coolant pipeline 82; third coolant pipeline 83; fourth coolant pipeline 84; fifth coolant pipeline 85; sixth coolant pipeline 86; seventh coolant pipeline 87; first refrigerant pipeline 91; second refrigerant pipeline 92; third refrigerant pipeline 93; fourth refrigerant pipeline 94; fifth refrigerant pipeline 95; sixth refrigerant pipeline 96; seventh refrigerant pipeline 97; eighth refrigerant pipeline 98. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0032] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] like Figure 1-2 As shown, this embodiment provides an extended-range thermal management system, which is configured in a car. The extended-range 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, an internal cooling module, an engine heat dissipation module and a coolant control valve 70.

[0034] The front-end heat dissipation module of this embodiment includes a first radiator 12, an external heat exchanger 10, and a low-temperature radiator 11 arranged in parallel, wherein the first radiator 12, the external heat exchanger 10, and the low-temperature radiator 11 are successively close to the active air intake grille 14, and the external fan 13 in the front-end radiator is located on the side of the low-temperature radiator 11. The external fan 13 is used to generate airflow to flow through the second radiator 62, the external heat exchanger 10, the low-temperature radiator 11, and the first radiator 12 in sequence, so that the air can fully exchange heat with the refrigerant in the external heat exchanger 10, the low-temperature radiator 11, and the coolant in the first radiator 12.

[0035] The electric drive heat dissipation module of this embodiment includes a motor assembly and a first pump body 20 connected in series, and the first pump body 20 drives the coolant to flow through the motor assembly to adjust the temperature. The first pump body 20 is located at the liquid outlet side of the motor assembly. The motor assembly of this embodiment preferably includes a first motor 21 and a second motor 22 connected in parallel, and a liquid cooling distribution device is provided at the liquid inlet end of the first motor 21, and a power module and a throttle valve are arranged in parallel at the liquid inlet end of the second motor 22.

[0036] The battery pack heat dissipation module of this embodiment includes a battery cold plate 31, a battery heat exchanger and a second pump body 30 connected in series in sequence. The second pump body 30 can drive the coolant to circulate through the battery heat exchanger and the battery cold plate 31 to adjust the temperature of the battery pack. The battery heat exchanger includes a first heat exchange plate 32 and a second heat exchange plate 33. The liquid inlet end of the first heat exchange plate 32 is connected to the battery cold plate 31, and the liquid outlet end of the first heat exchange plate 32 is connected to the liquid inlet end of the second pump body 30. The coolant circulates in the battery cold plate 31 and the first heat exchange plate 32 driven by the second pump body 30. 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 preferably uses a heating pump, so that the battery pack heat dissipation module has a heating function, which is beneficial to the temperature regulation of the battery pack.

[0037] In the battery pack heat dissipation module of the present embodiment, a first three-way valve 34 and a battery bypass pipe 35 are also provided at the liquid inlet end of the battery cold plate 31 and connected to the liquid inlet end of the second pump body 30, so that the coolant in the battery pack heat dissipation module can directly flow out of the battery pack heat dissipation module through the second pump body 30. At this time, the coolant does not pass through the battery cold plate 31 to avoid the coolant affecting the temperature of the battery pack.

[0038] The air conditioning module of 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, wherein the gas-liquid separator 41, the compressor 40 and the internal heat exchanger 42 are arranged in series in sequence, the liquid outlet of the gas-liquid separator 41 is connected to the liquid inlet of the compressor 40, the liquid inlet of the gas-liquid separator 41 is connected to the liquid outlet of the front evaporator 43 and the rear evaporator 44, the liquid inlet of the internal heat exchanger 42 is connected to the liquid outlet of the compressor 40, the liquid inlet of the front evaporator 43 is provided with a first expansion valve 75, and the liquid inlet of the rear evaporator 44 is provided with a second expansion valve 76. 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.

[0039] The internal cooling module of this embodiment includes a first cooling plate 50 and a second cooling plate 51. The first cooling plate 50 is used to pass cooling liquid, and the second cooling plate 51 is used to pass refrigerant to perform heat exchange with the cooling liquid 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 internal cooling module of this embodiment are all existing technologies, and will not be described in detail in this embodiment.

[0040] The engine cooling module of this embodiment includes a third pump body 60, an engine water channel 61 and a second radiator 62 connected in series, wherein the liquid outlet of the engine water channel 61 is connected to the liquid inlet of the second radiator 62 through a first engine pipeline 63, and the liquid outlet of the second radiator 62 is connected to the liquid inlet of the third pump body 60 through a second engine pipeline 64. The coolant in the engine cooling module flows through the second radiator 62 for cooling to adjust the temperature of the engine. The second radiator 62 is preferably arranged between the external heat exchanger 10 and the external fan 13, and the second radiator 62 is close to the external fan 13, so that the temperature can be reasonably adjusted.

[0041] like Figure 3 As shown, the front-end heat dissipation module, the battery pack heat dissipation module, the electric drive heat dissipation module and the internal cooling module of this embodiment are connected through the coolant control valve 70. Figure 3 The coolant control valve 70 includes a fixed valve body and a rotatable valve core. The valve body is formed with α valve port, β valve port, γ valve port, δ valve port, ε valve port, ζ valve port and η valve port in sequence along its circumference. The γ valve port, δ valve port, ε valve port, ζ valve port and η valve port are in strip shape, and the center angle between adjacent valve ports is 30°. The valve core is provided with first to third valve channels 73 in arc shape, wherein the center angles of the two ends of the first valve channel 71 are 150°; the second valve channel 72 is located inside the curved path of the first valve channel 71 and has the same curved direction as the first valve channel 71, and the center angles of the two ends of the second valve channel 72 are 90°; the third valve channel 73 is located outside the curved path of the first valve channel 71 and has the opposite curved direction as the first valve channel 71, and the center angles of the two ends of the third valve channel 73 are 60°, so as to connect the two adjacent valve ports of the valve body.

[0042] In the front-end heat dissipation module, the first end of the low-temperature radiator 11 is connected to the α valve port of the coolant control valve 70 through the first coolant pipe 81, and the second end of the low-temperature radiator 11 is connected to the β valve port of the coolant control valve 70 through the second coolant pipe 82. The first end of the first radiator 12 is connected to the first end of the low-temperature radiator 11 through the first front-end heat dissipation pipe 15, and the second end of the first radiator 12 is connected to the liquid inlet end of the second pump body 30 through the second front-end heat dissipation pipe 16. The first radiator 12 and the low-temperature radiator 11 can be selected according to the needs in the front-end radiator to dissipate the coolant flowing through the electric drive heat dissipation module to ensure the heat dissipation effect. A charge air cooler 17 is also provided on the second front-end heat dissipation pipe 16 of this embodiment to further ensure the heat dissipation effect.

[0043] In the electric drive heat dissipation module, the liquid outlet end of the first pump body 20 is connected to the second coolant pipe 82, so as to be connected to the β valve port of the coolant control valve 70 through the second coolant pipe 82, and the liquid inlet end of the motor assembly is connected to the γ valve port of the coolant control valve 70 through the third coolant pipe 83.

[0044] In the battery pack heat dissipation module, the liquid outlet end of the second pump body 30 is connected to the δ valve port of the coolant control valve 70 through the fourth coolant pipe 84, and the liquid inlet end of the first three-way valve 34 is connected to the ε valve port of the coolant control valve 7060 through the fifth coolant pipe 85.

[0045] In the internal cooling module, the liquid inlet end of the first cooling plate 50 is connected to the ζ valve port of the coolant control valve 70 through the sixth coolant pipe 86, and the liquid outlet end of the first cooling plate 50 is connected to the η valve port of the coolant control valve 70 through the seventh coolant pipe 87, and a coolant three-way valve is set on the seventh coolant pipe 87.

[0046] In the engine cooling module, the liquid outlet end of the engine water channel 61 is connected to the sixth coolant pipe 86 through the third engine pipe 65, and the liquid inlet end of the third pump body 60 is connected to the seventh coolant pipe 87 through the fourth engine pipe 66 and the second three-way valve 67. The coolant three-way valve can connect the engine cooling module to the internal cooling module or the coolant control valve 70 as needed.

[0047] The coolant pipes of the front-end heat dissipation module, the electric drive heat dissipation module, the battery pack heat dissipation module, the internal cooling module, and the engine heat dissipation module of this embodiment are connected through the coolant control valve 70. The valve core of the coolant control valve 70 is controlled to rotate to different angles to realize a variety of coolant circulation modes, including:

[0048] Battery pack-electric drive cooling module circulation mode, at this time the valve core is 0°, the first valve channel 71 of the valve core connects the β valve port and the ε valve port, the second valve channel 72 connects the γ valve port and the δ valve port, and the third valve channel 73 connects the ζ valve port and the η valve port. The coolant can circulate in the battery pack cooling module and the electric drive cooling module. The coolant in the electric drive cooling module first flows into the battery pack cooling module through the β valve port, the first valve channel 71 and ε, and then flows back to the electric drive cooling module through the δ valve port, the second valve channel 72 and the γ valve port. At this time, the engine cooling module can be connected to the internal cooling module as needed to make rational use of the engine's waste heat.

[0049] Battery pack-internal cooling module / engine cooling module circulation mode, at this time, the valve core rotates 60°, the first valve channel 71 of the valve core connects the δ valve port and the η valve port, the second valve channel 72 connects the α valve port and the γ valve port, and the third valve channel 73 connects the ε valve port and the ζ valve port. The coolant can circulate in the battery pack cooling module and the internal cooling module or in the battery pack cooling module and the engine cooling module. The coolant in the battery pack cooling module first flows into the seventh coolant pipeline 87 through the δ valve port, the first valve channel 71 and the η valve port. The coolant in the seventh coolant pipeline 87 can flow through the internal cooling module or the engine cooling module according to demand, and then flow back to the battery pack cooling module through the ζ valve port, the third valve channel 73 and the ε valve port. This coolant circulation mode can select the conditional temperature of the internal cooling module according to demand or use the residual heat of the engine to adjust the temperature of the battery pack.

[0050] Electric drive-internal cooling module / engine cooling module circulation and battery pack self-circulation mode, at this time, the valve core rotates 120°, the first valve channel 71 of the valve core connects the ζ valve port and the γ valve port, the second valve channel 72 connects the β valve port and the η valve port, and the third valve channel 73 connects the δ valve port and the ε valve port. The coolant can circulate in the electric drive cooling module and the internal cooling module or the engine cooling module and self-circulate in the battery pack cooling module. When the coolant circulates in the electric drive cooling module / engine cooling module, the coolant in the electric drive cooling module first flows into the internal cooling module / engine cooling module through the β valve port, the second valve channel 72 and the η valve port, and then flows back to the electric drive cooling module through the ζ valve port, the first valve channel 71 and the γ valve port. When the coolant self-circulates in the battery pack cooling module, the coolant in the battery pack cooling module first enters the coolant control valve 70 through the δ valve port, and then flows back to the battery pack cooling module through the third valve channel 73 and the ε valve port.

[0051] Battery pack-front end heat dissipation-electric drive heat dissipation module circulation mode, at this time the valve core rotates 180 degrees, the first valve channel 71 of the valve core connects the α valve port and the ε valve port, the second valve channel 72 connects the ζ valve port and the η valve port, and the third valve channel 73 connects the γ valve port and the δ valve port. The coolant can circulate in the battery pack heat dissipation module, the front end heat dissipation module and the electric drive heat dissipation module. The coolant in the battery pack heat dissipation module first flows into the electric drive heat dissipation module through the δ valve port, the third valve channel 73 and the γ valve port, then flows into the front end heat dissipation module through the second coolant pipe 82, and finally flows back to the battery pack heat dissipation module through the α valve port, the first valve channel 71 and the ε valve port.

[0052] Battery pack-internal cooling module / engine cooling module circulation and electric drive cooling module self-circulation mode, at this time the valve core rotates 240 degrees, the first valve channel 71 of the valve core connects the δ valve port and the η valve port, the second valve channel 72 connects the ε valve port and the ζ valve port, and the third valve channel 73 connects the β valve port and the γ valve port. The coolant can circulate in the battery pack cooling module and the internal cooling module / engine cooling module and self-circulate in the electric drive cooling module. When the coolant circulates in the battery pack cooling module and the internal cooling module / engine cooling module, the coolant in the battery pack cooling module first flows into the seventh coolant pipe 87 through the δ valve port, the first valve channel 71 and the η valve port. The coolant in the seventh coolant pipe 87 can choose to flow through the internal cooling module or the engine cooling module according to demand, and then flow back to the battery pack cooling module through the ζ valve port, the second valve channel 72 and the ε valve port. When the coolant self-circulates in the electric drive heat dissipation module, the coolant in the electric drive heat dissipation module first flows into the coolant control valve 70 through the β valve port, and then flows back to the electric drive heat dissipation module through the third valve channel 73 and the γ valve port.

[0053] The coolant control valve 70 of this embodiment is designed for the front-end heat dissipation module, electric drive heat dissipation module, internal cooling module, battery pack heat dissipation module and engine heat dissipation module arranged in this embodiment. By rotating the valve core, the extended-range thermal management system can realize a variety of coolant circulation modes. The coolant control valve 7060 can switch a coolant circulation mode every 60° rotation. Especially in a low temperature environment, the heat in the engine heat dissipation module can exchange heat with the other modules to reasonably utilize the heat generated by the engine. It has a simple structure and is easy to control, and can meet different thermal management requirements.

[0054] like Figure 4As shown, the refrigerant pipelines between the front-end heat dissipation module, the battery pack heat dissipation module, the air conditioning module and the internal cooling module of this embodiment are connected through a refrigerant control valve 74. One side of the refrigerant control valve 74 includes a C interface, a G interface, an E interface, and an A interface distributed in sequence; the other side of the refrigerant control valve 74 includes a B interface, an F interface, an H interface and a D interface distributed in sequence. Among them, the liquid outlet end of the internal heat exchanger 42 is connected to the A interface through the first refrigerant pipe 91; the liquid inlet end of the second heat exchange plate 33 is connected to the B interface through the second refrigerant pipe 92; the liquid outlet end of the second heat exchange plate 33 is connected to the C interface through the third refrigerant pipe 93; the second end of the external heat exchanger 10 is connected to the D interface through the fourth refrigerant pipe 94; the liquid outlet ends of the front evaporator 43 and the rear evaporator 44 are connected to the E interface through the fifth refrigerant pipe 95; the liquid inlet ends of the front evaporator 43, the rear evaporator 44 and the second cooling plate 51 are connected to the F interface through the sixth refrigerant pipe 96, the liquid inlet end of the second cooling plate 51 is provided with a third expansion valve 77, and the liquid outlet end of the second cooling plate 51 is connected to the liquid inlet end of the gas-liquid separator 41; the first end of the external heat exchanger 10 is connected to the G interface through the seventh refrigerant pipe 97; an eighth refrigerant pipe 98 is provided between the rear evaporator 44 and the second expansion valve 76 and is connected to the H interface.

[0055] See Figure 1 , when heating, the A interface is connected to the B interface, the C interface is connected to the F interface, the D interface is connected to the E interface, and the G interface is connected to the H interface. In the air conditioning module, the refrigerant output by the internal heat exchanger 42 can first flow into the second heat exchange plate 33 of the battery module through the first refrigerant pipeline 91, the A interface, the B interface and the second refrigerant pipeline 92; then flow into the second cooling plate 51 of the cooling module and / or the front evaporator 43 and / or the rear evaporator 44 of the air conditioning module and / or the eighth refrigerant pipeline 98 through the third refrigerant pipeline 93, the C interface, the F interface and the sixth pipeline; the refrigerant in the second cooling plate 51, the front evaporator 43 and the rear evaporator 44 can flow back to the gas-liquid separator 41, and the refrigerant in the eighth refrigerant pipeline 98 first flows into the external heat exchanger 10 of the front end heat dissipation module through the H interface, the G interface and the seventh refrigerant pipeline 97; then flow back to the gas-liquid separator 41 through the fourth refrigerant pipeline 94, the D interface, the E interface and the fifth refrigerant pipeline 95.

[0056] See Figure 2During cooling, the B interface, C interface, E interface and H interface are disconnected, the A interface is connected to the D interface, and the G interface is connected to the F interface. In the air-conditioning module, the refrigerant output by the compressor 40 first flows into the refrigerant control valve 74 through the internal heat exchanger 42 and the first refrigerant pipe 91; then flows into the external heat exchanger 10 of the front heat dissipation module through the D interface and the fourth refrigerant pipe 94; then flows into the refrigerant control valve 74 through the seventh refrigerant pipe 97 and the G interface; then flows through the second cooling plate 51 and / or the front evaporator 43 and / or the rear evaporator 44 through the F interface and the sixth pipe; the refrigerant in the second cooling plate 51, the front evaporator 43 and the rear evaporator 44 can flow back to the gas-liquid separator 41. The refrigerant control valve 74 of this embodiment can reduce the joints and valves between the pipes, making the control of the extended-range thermal management system more convenient.

[0057] The extended-range thermal management system of this embodiment also includes a first kettle and a second kettle, wherein the first kettle is connected to two refilling exhaust pipes, one of which is connected to the fourth engine pipe 66 through a refilling exhaust pipe, so that the first kettle can replenish coolant for the engine cooling module; the other refilling exhaust pipe is connected to the engine water channel 61 and the second radiator 62 to ensure the normal operation of the engine cooling module. The second kettle is connected to three refilling exhaust pipes, wherein the first refilling exhaust pipe is connected to the liquid outlet of the motor assembly; the second refilling exhaust pipe is connected to the liquid inlet of the motor assembly, and the third refilling exhaust pipe is connected to the liquid outlet of the battery cold plate 31 to facilitate refilling and exhausting.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An extended-range thermal management system, characterized in that: include; A front-end heat dissipation module, comprising an external heat exchanger (10) and a low-temperature radiator (11) arranged in parallel; An electric drive heat dissipation module comprises a motor assembly and a first pump body (20) connected in series, wherein the first pump body (20) is located at a liquid outlet side of the motor assembly; A battery pack heat dissipation module, comprising a battery cold plate (31), a battery heat exchanger and a second pump body (30) connected in series in sequence, wherein a first three-way valve (34) and a battery bypass pipe (35) are provided at a liquid inlet end of the battery cold plate (31) and connected to a liquid inlet end of the second pump body (30); An air conditioning module, comprising a gas-liquid separator (41), a compressor (40) and an internal heat exchanger (42) connected in series, wherein the internal heat exchanger (42) is connected to a front evaporator (43), a rear evaporator (44) and a heater (45); An internal cooling module, comprising a first cooling plate (50) for passing a cooling liquid and a second cooling plate (51) for passing a refrigerant; An engine cooling module, comprising a third pump body (60), an engine water channel (61) and a second radiator (62) connected in series; A coolant control valve (70) comprises a fixed valve body and a rotatable valve core, wherein the valve body is sequentially formed with an α valve port, a β valve port, a γ valve port, a δ valve port, an ε valve port, a ζ valve port and an η valve port along its circumference, wherein the γ valve port, the δ valve port, the ε valve port, the ζ valve port and the η valve port are in a strip shape, and the center angle between adjacent valve ports is 30°; the valve core is provided with first to third valve channels in an arc shape, wherein the center angles of the two ends of the first valve channel (71) are 150°. The second valve channel (72) is located on the inner side of the curved path of the first valve channel (71) and has the same curved direction as the first valve channel (71), and the center angles of the two ends of the second valve channel (72) are 90°; the third valve channel (73) is located on the outer side of the curved path of the first valve channel (71) and has the opposite curved direction as the first valve channel (71), and the center angles of the two ends of the third valve channel (73) are 60°, so as to connect two adjacent valve ports of the valve body; The first end of the low-temperature radiator (11) is connected to the α valve port via a first coolant pipe (81), and the second end of the low-temperature radiator (11) is connected to the β valve port via a second coolant pipe (82); the liquid outlet end of the first pump body (20) is connected to the second coolant pipe (82) to communicate with the β valve port, and the liquid inlet end of the motor assembly is connected to the γ valve port via a third coolant pipe (83); the liquid outlet end of the second pump body (30) is connected to the δ valve port via a fourth coolant pipe (84), and the liquid inlet end of the first three-way valve (34) is connected to the γ valve port via a fourth coolant pipe (84). The liquid end of the first cooling plate (50) is connected to the ε valve port through a fifth coolant pipe (85); the liquid inlet end of the first cooling plate (50) is connected to the ζ valve port through a sixth coolant pipe (86), and the liquid outlet end of the first cooling plate (50) is connected to the η valve port through a seventh coolant pipe (87); the liquid outlet end of the engine water channel (61) is connected to the sixth coolant pipe (86) through a third engine pipe (65), and the liquid inlet end of the third pump body (60) is connected to the seventh coolant pipe (87) through a fourth engine pipe (66) and a second three-way valve (67); The valve core is controlled to rotate at an angle of 60° each time to adjust the circulation mode of the coolant in the front end heat dissipation module, the electric drive heat dissipation module, the battery pack heat dissipation module, the internal cooling module and the engine heat dissipation module.

2. The extended-range thermal management system according to claim 1, characterized in that: The coolant circulation mode includes a battery pack-electric drive heat dissipation module circulation mode, in which the valve core is 0°, the first valve channel (71) is connected to the β valve port and the ε valve port, the second valve channel (72) is connected to the γ valve port and the δ valve port, and the third valve channel (73) is connected to the ζ valve port and the η valve port, so that the coolant circulates in the battery pack heat dissipation module and the electric drive heat dissipation module.

3. The extended-range thermal management system according to claim 2, characterized in that: The coolant circulation mode includes a battery pack-internal cooling module / engine cooling module circulation mode, in which the valve core rotates 60°, the first valve channel (71) connects the δ valve port and the η valve port, the second valve channel (72) connects the α valve port and the γ valve port, and the third valve channel (73) connects the ε valve port and the ζ valve port, so that the coolant can circulate in the battery pack cooling module and the internal cooling module or in the battery pack cooling module and the engine cooling module.

4. The extended-range thermal management system according to claim 3, characterized in that: The coolant circulation mode includes electric drive-internal cooling module / engine cooling module circulation and battery pack self-circulation mode. At this time, the valve core rotates 120°, the first valve channel (71) connects the ζ valve port and the γ valve port, the second valve channel (72) connects the β valve port and the η valve port, and the third valve channel (73) connects the δ valve port and the ε valve port, so that the coolant can circulate in the electric drive cooling module and the internal cooling module or the engine cooling module, and the coolant can self-circulate in the battery pack cooling module.

5. The extended-range thermal management system according to claim 4, characterized in that: The coolant circulation mode includes a battery pack-front end heat dissipation-electric drive heat dissipation module circulation mode, at which the valve core rotates 180 degrees, the first valve channel (71) connects the α valve port and the ε valve port, the second valve channel (72) connects the ζ valve port and the η valve port, and the third valve channel (73) connects the γ valve port and the δ valve port, so that the coolant can circulate in the battery pack heat dissipation module, the front end heat dissipation module and the electric drive heat dissipation module.

6. The extended-range thermal management system according to claim 5, characterized in that: The coolant circulation mode includes battery pack-internal cooling module / engine cooling module circulation and electric drive cooling module self-circulation mode. At this time, the valve core rotates 240°, the first valve channel (71) connects the δ valve port and the η valve port, the second valve channel (72) connects the ε valve port and the ζ valve port, and the third valve channel (73) connects the β valve port and the γ valve port, so that the coolant can circulate in the battery pack cooling module and the internal cooling module / the engine cooling module, and the coolant can self-circulate in the electric drive cooling module.

7. The extended-range thermal management system according to claim 1, characterized in that: A refrigerant control valve (74) is arranged between the front-end heat dissipation module, the battery pack heat dissipation module, the air conditioning module and the internal cooling module, one side of the refrigerant control valve (74) includes a C interface, a G interface, an E interface and an A interface which are distributed in sequence, and the other side includes a B interface, an F interface, an H interface and a D interface which are distributed in sequence; The liquid outlet of the internal heat exchanger (42) is connected to the A interface via a first refrigerant pipe (91); the liquid inlet of the second heat exchange plate (33) is connected to the B interface via a second refrigerant pipe (92); the liquid outlet of the second heat exchange plate (33) is connected to the C interface via a third refrigerant pipe (93); the second end of the external heat exchanger (10) is connected to the D interface via a fourth refrigerant pipe (94); the liquid outlets of the front evaporator (43) and the rear evaporator (44) are connected to the E interface via a fifth refrigerant pipe (95); the liquid outlets of the front evaporator (43), the rear evaporator (44) and the second cooling plate (51) are connected to the E interface via a fifth refrigerant pipe (95); The liquid inlet end is connected to the F interface through the sixth refrigerant pipe (96), wherein the liquid inlet end of the front evaporator (43) is provided with a first expansion valve (75), the liquid inlet end of the rear evaporator (44) is provided with a second expansion valve (76), the liquid inlet end of the second cooling plate (51) is provided with a third expansion valve (77), and the liquid outlet end of the second cooling plate (51) is connected to the liquid inlet end of the gas-liquid separator (41); the first end of the external heat exchanger (10) is connected to the G interface through the seventh refrigerant pipe (97); an eighth refrigerant pipe (98) is provided between the rear evaporator (44) and the second expansion valve (76) and connected to the H interface.

8. The extended-range thermal management system according to claim 7, characterized in that: During heating, interface A is connected to interface B, interface C is connected to interface F, interface D is connected to interface E, and interface G is connected to interface H; during cooling, interface B, interface C, interface E and interface H are disconnected, interface A is connected to interface D, and interface G is connected to interface F.

9. The extended-range thermal management system according to any one of claims 1 to 8, characterized in that: The electric drive heat dissipation module further comprises a first radiator (12) arranged in parallel with the low-temperature radiator (11); a first end of the first radiator (12) is connected to a first end of the low-temperature radiator (11) via a first front-end heat dissipation pipeline (15); a second end of the first radiator (12) is connected to a liquid inlet end of the second pump body (30) via a second front-end heat dissipation pipeline (16); a charge air cooler (17) is arranged on the second front-end heat dissipation pipeline (16).

10. An automobile, characterized in that: The automobile is equipped with the extended-range thermal management system described in any one of claims 1 to 9.

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