Indirect heat pump system and vehicle

Abstract

The utility model provides a kind of indirect heat pump system and vehicle.The indirect heat pump system includes motor loop, battery loop, heat exchange loop, refrigeration circuit and warm air circuit, motor loop, battery loop and heat exchange loop are all with first multi-way valve can be connected and disconnected, heat exchange loop and refrigeration circuit are heat exchangeable by first heat exchanger, warm air circuit and refrigeration circuit are heat exchangeable by second heat exchanger.The utility model's indirect heat pump system has simple structure, heat exchange loop and warm air circuit are heat exchangeable with refrigeration circuit, so that refrigeration circuit can have excellent refrigeration performance in high temperature environment and when battery power is larger and heat is higher, ensure the temperature suitability of passenger compartment and take into account battery cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, specifically to an indirect heat pump system and a vehicle. Background Technology

[0002] The thermal management of electric vehicles mainly consists of three parts: passenger compartment air conditioning, battery cooling and heating, and motor cooling. Related technologies use indirect heat pump systems to manage the thermal of these three parts. However, the indirect heat pump system in these technologies is relatively complex, and it cannot simultaneously manage battery cooling and passenger compartment temperature when the battery adopts high-power structures such as super-fast charging, which results in high heat. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an indirect heat pump system and a vehicle using the indirect heat pump system.

[0005] The indirect heat pump system of this utility model embodiment includes:

[0006] The system includes a motor circuit, a battery circuit, a heat exchange circuit, a refrigeration circuit, and a heating circuit. The motor circuit, the battery circuit, and the heat exchange circuit are all connected to a first multi-way valve for on / off switching. The heat exchange circuit and the refrigeration circuit can exchange heat through a first heat exchanger, and the heating circuit and the refrigeration circuit can exchange heat through a second heat exchanger.

[0007] The indirect heat pump system of this utility model embodiment has a simple structure. Both the heat exchange circuit and the warm air circuit can exchange heat with the refrigeration circuit, so that the refrigeration circuit can have excellent cooling performance in high temperature environment and when the battery power is large and the heat is high, ensuring the temperature of the passenger cabin and taking into account the battery cooling effect.

[0008] In some embodiments, the refrigeration circuit includes a compressor connected in a cycle, a heat exchange chamber of the second heat exchanger, an accessible and detachable condenser, a heat exchange chamber of the first heat exchanger and an evaporator connected in parallel, and a gas-liquid separator, wherein the heat exchange chamber of the first heat exchanger and the evaporator can be switched on and off.

[0009] In some embodiments, the refrigeration circuit includes a main pipeline, a first parallel pipeline, and a second parallel pipeline connected in a loop. The gas-liquid separator, the compressor, and a heat exchange chamber of the second heat exchanger are all located on the main pipeline. One sub-pipeline of the first parallel pipeline is provided with a first valve, the condenser, and a first check valve. Another sub-pipeline of the first parallel pipeline is provided with a second valve. One sub-pipeline of the second parallel pipeline is provided with a third valve and a heat exchange chamber of the first heat exchanger. Another sub-pipeline of the second parallel pipeline is provided with a fourth valve and the evaporator.

[0010] In some embodiments, the motor circuit includes a motor-driven water pump connected via a pipeline between the two ports of the first multi-way valve, a motor body, and an accessible and detachable radiator.

[0011] In some embodiments, the motor circuit further includes a second multi-way valve, two valve ports of which are connected to the pipeline of the motor circuit, and the other valve port of the second multi-way valve is connected to the pipeline of the motor circuit through a branch, which is arranged in parallel with the radiator.

[0012] In some embodiments, the warm air circuit includes a warm air pump, another heat exchange chamber of the first heat exchanger, a heater, and a warm air core, which are circulated through a pipeline.

[0013] In some embodiments, the battery circuit includes a battery water pump and a battery water cooling plate connected via piping between the two valve ports of the first multi-way valve; and / or

[0014] The heat exchange circuit includes another heat exchange chamber of the second heat exchanger connected by a pipeline between the two valve ports of the first multi-way valve.

[0015] In some embodiments, the battery circuit and the heating circuit can be connected on and off.

[0016] In some embodiments, the indirect heat pump system further includes a second multi-way valve, a first transfer pipeline, a second transfer pipeline, and a second one-way valve. The second one-way valve is disposed on the first transfer pipeline. The two valve ports of the second multi-way valve are connected to the heating circuit. The first transfer pipeline and the second transfer pipeline are connected in parallel between the battery circuit and the heating circuit. One end of the second transfer pipeline is connected to the other valve port of the second multi-way valve.

[0017] The vehicle of this utility model embodiment includes: the indirect heat pump system described in any of the above embodiments.

[0018] The vehicle of this utility model embodiment, through the indirect heat pump system of this utility model embodiment, can ensure a suitable temperature in the passenger compartment while also taking into account the battery cooling effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an indirect heat pump system according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 3 ;

[0023] Figure 5 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 4 ;

[0024] Figure 6 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 5 ;

[0025] Figure 7 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 6 ;

[0026] Figure 8 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 7 ;

[0027] Figure 9 This is a schematic diagram of the usage state of the indirect heat pump system according to an embodiment of this utility model. Figure 8 .

[0028] Figure label:

[0029] 1. Motor circuit; 11. Motor water pump; 12. Motor body; 13. Radiator; 14. Second multi-way valve; 15. Branch circuit; 2. Battery circuit; 21. Battery water pump; 22. Battery water-cooled plate; 3. Heat exchange circuit; 4. Refrigeration circuit; 41. Compressor; 42. Condenser; 43. Evaporator; 44. Gas-liquid separator; 45. First valve; 46. First check valve; 47. Second valve; 48. Third valve; 49. Fourth valve; 5. Warm air circuit; 51. Warm air water pump; 52. Heater; 53. Warm air core; 6. First multi-way valve; 7. First heat exchanger; 8. Second heat exchanger; 9. Second multi-way valve; 10. First transfer pipeline; 20. Second transfer pipeline; 30. Second check valve. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following is for reference. Figures 1-8 This invention describes an indirect heat pump system and a vehicle according to embodiments of the present invention.

[0032] like Figures 1-8 As shown, the indirect heat pump system of this utility model embodiment includes a motor circuit 1, a battery circuit 2, a heat exchange circuit 3, a refrigeration circuit 4, and a heating circuit 5.

[0033] The motor circuit 1, battery circuit 2, and heat exchange circuit 3 are all connected to the first multi-way valve 6 in a way that allows them to be switched on and off. For example... Figure 1 As shown, motor circuit 1, battery circuit 2 and heat exchange circuit 3 are all connected to the first multi-way valve 6. The first multi-way valve 6 can control the on / off state of each of motor circuit 1, battery circuit 2 and heat exchange circuit 3, and can also connect any one of motor circuit 1, battery circuit 2 and heat exchange circuit 3 to at least one of the remaining two.

[0034] Heat exchange circuit 3 and refrigeration circuit 4 can exchange heat through the first heat exchanger 7. For example... Figure 1 As shown, one heat exchange chamber of the first heat exchanger 7 is located on the refrigeration circuit 4, and the other heat exchange chamber is located on the heat exchange circuit 3, so that the circulating medium of the refrigeration circuit 4 and the circulating medium of the heat exchange circuit 3 can exchange heat.

[0035] The heating circuit 5 and the cooling circuit 4 can exchange heat through the second heat exchanger 8. For example... Figure 1 As shown, one heat exchange chamber of the second heat exchanger 8 is located on the refrigeration circuit 4, and the other heat exchange chamber is located on the heating circuit 5, so that the circulating medium of the refrigeration circuit 4 and the circulating medium of the heating circuit 5 can exchange heat.

[0036] The indirect heat pump system of this utility model embodiment has a simple structure. Both the heat exchange circuit 3 and the warm air circuit 5 can exchange heat with the cooling circuit 4, so that the cooling circuit 4 can have excellent cooling performance in high temperature environment and when the battery power is large and the heat is high, ensuring the temperature of the passenger cabin and taking into account the battery cooling effect.

[0037] The second heat exchanger 8 is preferably, but not limited to, a condenser.

[0038] In some embodiments, the refrigeration circuit 4 includes a compressor 41 connected in a cycle, a heat exchange chamber of a second heat exchanger 8, an accessible and detachable condenser 42, a heat exchange chamber of a first heat exchanger 7 and an evaporator 43 connected in parallel, and a gas-liquid separator 44, wherein a heat exchange chamber of the first heat exchanger 7 and the evaporator 43 can be switched on and off.

[0039] like Figure 1 As shown, the outlet of compressor 41, a heat exchange chamber of the second heat exchanger 8, an accessible and detachable condenser 42, a heat exchange chamber of the first heat exchanger 7 connected in parallel, an evaporator 43, a gas-liquid separator 44, and the inlet of compressor 41 are connected by pipelines to form a circulation to form a refrigeration circuit 4, which can exchange heat with the heating circuit 5 through the second heat exchanger 8 and cool the passenger compartment.

[0040] A heat exchange chamber of the first heat exchanger 7 and an evaporator 43 are connected in parallel between an accessible and detachable condenser 42 and a gas-liquid separator 44. The heat exchange chamber of the first heat exchanger 7 can be switched on and off, and the evaporator 43 can be switched on and off, so that the circulating medium in the refrigeration circuit 4 can optionally pass through at least one of the heat exchange chamber of the first heat exchanger 7 and the evaporator 43, thereby enabling the refrigeration circuit 4 to optionally perform at least one function of heat exchange and refrigeration through the first heat exchanger 7.

[0041] In some embodiments, the refrigeration circuit 4 includes a main pipeline, a first parallel pipeline, and a second parallel pipeline connected in a loop. The gas-liquid separator 44, the compressor 41, and a heat exchange chamber of the second heat exchanger 8 are all located on the main pipeline. One sub-pipeline of the first parallel pipeline is provided with a first valve 45, a condenser 42, and a first check valve 46. Another sub-pipeline of the first parallel pipeline is provided with a second valve 47. One sub-pipeline of the second parallel pipeline is provided with a third valve 48 and a heat exchange chamber of the first heat exchanger 7. Another sub-pipeline of the second parallel pipeline is provided with a fourth valve 49 and an evaporator 43.

[0042] like Figure 1 As shown, the first parallel pipeline and the second parallel pipeline are connected in series between the two ends of the main pipeline to form a loop.

[0043] The gas-liquid separator 44, the compressor 41, and a heat exchange chamber of the second heat exchanger 8 are preferably, but not limited to, arranged sequentially on the main pipeline.

[0044] One end of the main pipeline is located on the side of the second heat exchanger 8 away from the outlet of the compressor 41 and is connected to the first parallel pipeline. The first parallel pipeline includes two sub-pipelines. One sub-pipeline of the first parallel pipeline is equipped with a first valve 45, a condenser 42, and a first check valve 46. The first check valve 46 ensures that the circulating medium in this sub-pipeline can only flow along one end of the main pipeline toward the second parallel pipeline. The first valve 45 controls the opening and closing of this sub-pipeline, allowing the condenser 42 to be connected and disconnected. The other sub-pipeline of the first parallel pipeline is equipped with a second valve 47, which controls the opening and closing of this sub-pipeline. When the first valve 45 is closed, disconnecting the condenser 42, the second valve 47 needs to be opened, allowing the circulating medium in the refrigeration circuit 4 to pass through the other sub-pipeline of the first parallel pipeline. Both the first valve 45 and the second valve 47 can be open, or one of them can be selectively opened. The first valve 45 and the second valve 47 are preferably, but not limited to, shut-off valves.

[0045] The second parallel pipeline connects to the other end of the first parallel pipeline and the main pipeline. The gas-liquid separator 44 is preferably, but not limited to, connected to the other end of the main pipeline and connected to the second parallel pipeline. The second parallel pipeline includes two sub-pipelines. One sub-pipeline is equipped with a third valve 48 and a heat exchange chamber of the first heat exchanger 7. The third valve 48 controls the on / off state of this sub-pipeline, thereby controlling the on / off state of the heat exchange chamber of the first heat exchanger 7. The other sub-pipeline is equipped with a fourth valve 49 and an evaporator 43. The fourth valve 49 controls the on / off state of this sub-pipeline, thereby controlling the on / off state of the evaporator 43. Both the third valve 48 and the fourth valve 49 can be open, or one of them can be selectively open. The third valve 48 and the fourth valve 49 are preferably, but not limited to, electronic expansion valves.

[0046] In some embodiments, the motor circuit 1 includes a motor-driven water pump 11, a motor body 12, and a detachable radiator 13 connected by a pipeline between the two valve ports of the first multi-way valve 6.

[0047] like Figure 1 As shown, the first port of the first multi-way valve 6, the motor water pump 11, the motor body 12, the detachable radiator 13, and the second port of the first multi-way valve 6 are connected by a pipeline to form a circulation to form a motor circuit 1. The circulating medium in the motor circuit 1 exchanges heat with the motor body 12, thereby regulating the temperature of the motor body 12.

[0048] Since the refrigeration circuit 4 can perform two heat exchanges through the first heat exchanger 7 and the second heat exchanger 8, the refrigeration efficiency can be improved, the power of the motor water pump 11 in high temperature environment can be reduced, and the NVH problem of the motor water pump 11 can be avoided.

[0049] In some embodiments, the motor circuit 1 further includes a second multi-way valve 14, with two valve ports of the second multi-way valve 14 connected to the pipeline of the motor circuit 1, and the other valve port of the second multi-way valve 14 connected to the pipeline of the motor circuit 1 through a branch 15, which is arranged in parallel with the radiator 13.

[0050] like Figure 1 As shown, the second multi-way valve 14 is preferably, but not limited to, a three-way valve. Two valve ports of the second multi-way valve 14 are connected to the pipeline of the motor circuit 1. The other valve port of the second multi-way valve 14 is connected to the pipeline of the motor circuit 1 through a branch 15. The branch 15 is arranged in parallel with the radiator 13. The second multi-way valve 14 allows the circulating medium in the motor circuit 1 to pass through the radiator 13 or through the branch 15 to bypass the radiator 13, thereby allowing the radiator 13 to be connected and disconnected.

[0051] In some embodiments, the warm air circuit 5 includes a warm air pump 51, another heat exchange chamber of the first heat exchanger 7, a heater 52, and a warm air core 53, which are circulated through a pipeline.

[0052] like Figure 1 As shown, the outlet of the heater pump 51, another heat exchange chamber of the first heat exchanger 7, the heater 52, the heater core 53, and the inlet of the heater pump 51 are connected by pipelines to form a circulation system, which is used to heat the passenger compartment. The heater 52 can be turned on or off.

[0053] Since the refrigeration circuit 4 can perform two heat exchanges through the first heat exchanger 7 and the second heat exchanger 8, the refrigeration efficiency can be improved, the power of the heater pump 51 in high-temperature environments can be reduced, and the NVH problems of the heater pump 51 can be avoided.

[0054] In some embodiments, the battery circuit 2 includes a battery water pump 21 and a battery water cooling plate 22 connected by a pipeline between the two valve ports of the first multi-way valve 6.

[0055] like Figure 1 As shown, the third valve port of the first multi-way valve 6, the battery water pump 21, the battery water cooling plate 22, and the fourth valve port of the first multi-way valve 6 are connected by a pipeline to form a circulation, thereby forming a battery circuit 2. The circulating medium in the battery circuit 2 exchanges heat with the battery body through the battery water cooling plate 22, thereby regulating the temperature of the battery body.

[0056] Since the refrigeration circuit 4 can perform two heat exchanges through the first heat exchanger 7 and the second heat exchanger 8, the refrigeration efficiency can be improved, the power of the battery water pump 21 in high-temperature environments can be reduced, and the NVH problems of the battery water pump 21 can be avoided.

[0057] In some embodiments, the heat exchange circuit 3 includes another heat exchange chamber of the second heat exchanger 8 connected by a pipeline between the two valve ports of the first multi-way valve 6.

[0058] like Figure 1 As shown, the fifth valve port of the first multi-way valve 6, another heat exchange chamber of the second heat exchanger 8, and the sixth valve port of the first multi-way valve 6 are connected by a pipeline to form a circulation, thereby forming a heat exchange circuit 3. The first multi-way valve 6 enables at least one of the motor circuit 1 and the battery circuit 2 to be connected to the heat exchange circuit 3 so as to exchange heat with the refrigeration circuit 4 through the second heat exchanger 8.

[0059] In some embodiments, the battery circuit 2 and the heating circuit 5 can be connected on and off.

[0060] like Figure 1 As shown, the battery circuit 2 and the heating circuit 5 can be connected on and off. When the battery circuit 2 and the heating circuit 5 are disconnected, the circulating medium in the battery circuit 2 and the circulating medium in the heating circuit 5 do not mix and flow separately. When the battery circuit 2 and the heating circuit 5 are connected, the battery circuit 2 and the heating circuit 5 form a large loop. The circulating medium in the battery circuit 2 and the circulating medium in the heating circuit 5 mix and circulate in the large loop, so that the circulating medium in the battery circuit 2 can exchange heat with the refrigeration circuit 4 through the second heat exchanger 8.

[0061] In some embodiments, the indirect heat pump system further includes a second multi-way valve 14, a first transfer pipe 10, a second transfer pipe 20, and a second one-way valve 30. The second one-way valve 30 is disposed on the first transfer pipe 10. The two valve ports of the second multi-way valve 14 are connected to the heating circuit 5. The first transfer pipe 10 and the second transfer pipe 20 are connected in parallel between the battery circuit 2 and the heating circuit 5, and one end of the second transfer pipe 20 is connected to the other valve port of the second multi-way valve 14.

[0062] like Figure 1 As shown, one end of the first transfer pipe 10 and one end of the second transfer pipe 20 are both connected to the portion of the battery circuit 2 located between the first multi-way valve 6 and the battery water pump 21. The other end of the first transfer pipe 10 and the other end of the second transfer pipe 20 are both connected to the portion of the heating circuit 5 located between the heating core 53 and the heating water pump 51, so that the first transfer pipe 10 and the second transfer pipe 20 are connected in parallel between the battery circuit 2 and the heating circuit 5.

[0063] The first transfer pipeline 10 is equipped with a second one-way valve 30, which ensures that the circulating medium in the first transfer pipeline 10 can only flow from the battery circuit 2 to the heating circuit 5, and the opening and closing of the first transfer pipeline 10 can be controlled by the second one-way valve 30.

[0064] Two valve ports of the second multi-way valve 14 are located on the heating circuit 5, and the other valve port is connected to the second transfer pipe 20. The second multi-way valve 14 can control the opening and closing of the second transfer pipe 20. Thus, the second multi-way valve 14 and the second one-way valve 30 can cooperate to control the opening and closing of the battery circuit 2 and the heating circuit 5.

[0065] The indirect heat pump system of this utility model embodiment has multiple usage states, such as... Figures 2-8 As shown in the figure, the solid arrows indicate the flow direction of the refrigerant as one circulating medium, and the dashed arrows indicate the flow direction of the antifreeze as another circulating medium.

[0066] Specifically, such as Figure 2 As shown, battery circuit 2 is open and antifreeze circulates, motor circuit 1 and heat exchange circuit 3 are closed, the second one-way valve 30 and the second multi-way valve 9 disconnect the heating circuit 5 and battery circuit 2, the heating circuit 5 is closed, the first valve 45 and the fourth valve 49 in the refrigeration circuit 4 are open, and the second valve 47 and the third valve 48 are closed. The refrigerant in the refrigeration circuit 4 flows from the main pipe through the condenser 42 and the evaporator 43 and then back to the main pipe. The first heat exchanger 7 and the second heat exchanger 8 do not exchange heat. At this time, the indirect heat pump system achieves cabin cooling and battery temperature equalization.

[0067] like Figure 3 As shown, in the refrigeration circuit 4, the second valve 47 and the third valve 48 are open, while the first valve 45 and the fourth valve 49 are closed. The refrigerant in the refrigeration circuit 4 flows through the main pipe, bypassing the condenser 42, and then returns to the main pipe via the first heat exchanger 7. The heating circuit 5 is disconnected from the battery circuit 2, and the heating circuit 5 is open and circulates antifreeze. The second heat exchanger 8 performs heat exchange. The battery circuit 2 is open and circulates antifreeze. The motor circuit 1 and the heat exchange circuit 3 are open and connected. The antifreeze flows from the motor circuit 1 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange in the first heat exchanger 7, and then returns to the motor circuit 1 through the first multi-way valve 6. The antifreeze in the motor circuit 1 may flow through the radiator 13, or may not flow through the radiator 13, or may partially flow through the radiator 13. At this time, the indirect heat pump system achieves cabin heating and battery temperature equalization.

[0068] like Figure 4As shown, in the refrigeration circuit 4, the second valve 47 is closed, while the first valve 45, the third valve 48, and the fourth valve 49 are open. The refrigerant flows through the main pipe of the refrigeration circuit 4, passing through the condenser 42 and simultaneously through the first heat exchanger 7 and the evaporator 43, before returning to the main pipe. The heating circuit 5 is disconnected from the battery circuit 2, and the heating circuit 5 is opened and circulates antifreeze. The second heat exchanger 8 performs heat exchange. The battery circuit 2 and the heat exchange circuit 3 are opened and connected. The antifreeze flows from the battery circuit 2 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange through the first heat exchanger 7, and then returns to the battery circuit 2 through the first multi-way valve 6. The motor circuit 1 is opened and circulates antifreeze. The antifreeze in the motor circuit 1 preferably flows through the radiator 13, but is not limited to this. At this time, the indirect heat pump system achieves battery cooling, motor cooling, and dehumidification of the passenger compartment.

[0069] like Figure 5 As shown, in the refrigeration circuit 4, the second valve 47 is closed, while the first valve 45, the third valve 48, and the fourth valve 49 are open. The refrigerant flows through the main pipe of the refrigeration circuit 4, passing through the condenser 42, the first heat exchanger 7, and the evaporator 43, before returning to the main pipe. The heating circuit 5 is disconnected from the battery circuit 2 and is closed; the second heat exchanger 8 does not perform heat exchange. The battery circuit 2 and the heat exchange circuit 3 are open and connected. Antifreeze flows from the battery circuit 2 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange in the first heat exchanger 7, and then returns to the battery circuit 2 through the first multi-way valve 6. The motor circuit 1 is open and circulates antifreeze. The antifreeze preferably flows through the radiator 13 in the motor circuit 1, but is not limited to this flow. At this time, the indirect heat pump system achieves battery cooling, motor cooling, and passenger compartment cooling.

[0070] like Figure 6 As shown, in the refrigeration circuit 4, the first valve 45 and the fourth valve 49 are closed, while the second valve 47 and the third valve 48 are open. The refrigerant in the refrigeration circuit 4 flows through the main pipe, bypassing the condenser 42, and then returns to the main pipe via the first heat exchanger 7. The heating circuit 5 is disconnected from the battery circuit 2, and the heating circuit 5 is opened and circulates antifreeze. The second heat exchanger 8 performs heat exchange. The battery circuit 2 and the heat exchange circuit 3 are opened and connected. Antifreeze flows from the battery circuit 2 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange via the first heat exchanger 7, and then returns to the battery circuit 2 through the first multi-way valve 6. The motor circuit 1 is opened and circulates antifreeze. The antifreeze in the motor circuit 1 preferably flows through the radiator 13, but is not limited to this. At this time, the indirect heat pump system achieves battery cooling, motor cooling, and passenger compartment heating.

[0071] like Figure 7As shown, in the refrigeration circuit 4, the first valve 45 is closed, while the second valve 47, the third valve 48, and the fourth valve 49 are open. The refrigerant, within the refrigeration circuit 4, bypasses the condenser 42 via the main pipe and simultaneously passes through the first heat exchanger 7 and the evaporator 43, before returning to the main pipe. The heating circuit 5 is connected to the battery circuit 2 to form a large loop, and both the heating circuit 5 and the battery circuit 2 are open. The antifreeze circulates within this large loop, with heat exchange occurring in the second heat exchanger 8. The motor circuit 1 and the heat exchange circuit 3 are open and connected. The antifreeze flows from the motor circuit 1 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange in the first heat exchanger 7, and then returns to the motor circuit 1 through the first multi-way valve 6. The antifreeze preferably flows through the radiator 13 in the motor circuit 1, but is not limited to this. In this configuration, the indirect heat pump system achieves battery heating, motor cooling, and cabin dehumidification.

[0072] like Figure 8 As shown, in the refrigeration circuit 4, the first valve 45 and the fourth valve 49 are open, while the second valve 47 and the third valve 48 are closed. The refrigerant flows through the main pipe, condenser 42, and evaporator 43 within the refrigeration circuit 4 before returning to the main pipe. The heating circuit 5 connects with the battery circuit 2 to form a large loop, and both the heating circuit 5 and the battery circuit 2 are open. Antifreeze circulates within this large loop, and the second heat exchanger 8 performs heat exchange. The heat exchange circuit 3 is closed, and the first heat exchanger 7 does not perform heat exchange. The motor circuit 1 is open and circulates antifreeze, which preferably, but is not limited to, flows through the radiator 13 within the motor circuit 1. At this point, the indirect heat pump system achieves battery heating, motor cooling, and passenger compartment cooling.

[0073] like Figure 9 As shown, in the refrigeration circuit 4, the first valve 45 and the fourth valve 49 are closed, while the second valve 47 and the third valve 48 are open. The refrigerant, within the refrigeration circuit 4, flows through the main pipe, bypasses the condenser 42, and returns to the main pipe via the first heat exchanger 7. The heating circuit 5 and the battery circuit 2 are connected to form a large loop, and both are open. The antifreeze circulates within this large loop, with heat exchange occurring via the second heat exchanger 8. The motor circuit 1 and the heat exchange circuit 3 are open and connected. The antifreeze flows from the motor circuit 1 through the first multi-way valve 6 to the heat exchange circuit 3, undergoes heat exchange via the first heat exchanger 7, and then returns to the motor circuit 1 through the first multi-way valve 6. The antifreeze in the motor circuit 1 preferably flows through, but is not limited to, the radiator 13. In this configuration, the indirect heat pump system provides battery heating, motor cooling, and cabin heating.

[0074] The following is for reference. Figures 1-8 Describes a vehicle according to an embodiment of the present utility model.

[0075] like Figures 1-8As shown, the vehicle of this utility model embodiment includes the indirect heat pump system of this utility model embodiment.

[0076] The vehicle of this utility model embodiment, through the indirect heat pump system of this utility model embodiment, can ensure a suitable temperature in the passenger compartment while also taking into account the battery cooling effect.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0079] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0080] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An indirect heat pump system, characterized in that, The application relates to a multi-circuit cooling system, which comprises a motor circuit (1), a battery circuit (2), a heat exchange circuit (3), a refrigeration circuit (4) and a warm air circuit (5), wherein the motor circuit (1), the battery circuit (2) and the heat exchange circuit (3) are connected to a first multi-way valve (6) in an on-off mode, the heat exchange circuit (3) and the refrigeration circuit (4) are connected to a first heat exchanger (7) in a heat exchange mode, and the warm air circuit (5) and the refrigeration circuit (4) are connected to a second heat exchanger (8) in a heat exchange mode. The refrigeration circuit (4) comprises a compressor (41), one heat exchange cavity of the second heat exchanger (8), a condenser (42) which can be connected or disconnected, one heat exchange cavity of the first heat exchanger (7) and an evaporator (43) which are connected in parallel, and a gas-liquid separator (44), wherein the one heat exchange cavity of the first heat exchanger (7) and the evaporator (43) are connected in an on-off mode.

2. The indirect heat pump system of claim 1, wherein, The refrigeration circuit (4) comprises a main pipeline, a first parallel pipeline and a second parallel pipeline which are connected in a cycle mode, the gas-liquid separator (44), the compressor (41) and one heat exchange cavity of the second heat exchanger (8) are arranged on the main pipeline, one sub-pipeline of the first parallel pipeline is provided with a first valve (45), the condenser (42) and a first one-way valve (46), another sub-pipeline of the first parallel pipeline is provided with a second valve (47), one sub-pipeline of the second parallel pipeline is provided with a third valve (48) and one heat exchange cavity of the first heat exchanger (7), and another sub-pipeline of the second parallel pipeline is provided with a fourth valve (49) and the evaporator (43).

3. The indirect heat pump system of claim 2, wherein, The motor circuit (1) comprises a motor water pump (11), a motor body (12) and a radiator (13) which can be connected or disconnected and are connected to two valve ports of the first multi-way valve (6) through pipelines.

4. The indirect heat pump system of claim 1, wherein, The motor circuit (1) further comprises a second multi-way valve (14), two valve ports of the second multi-way valve (14) are connected to the pipeline of the motor circuit (1), another valve port of the second multi-way valve (14) is connected to the pipeline of the motor circuit (1) through a branch (15), and the branch (15) is arranged in parallel with the radiator (13).

5. The indirect heat pump system of claim 4, wherein, The warm air circuit (5) comprises a warm air water pump (51), another heat exchange cavity of the first heat exchanger (7), a heater (52) and a warm air core (53) which are connected in a cycle mode through pipelines.

6. The indirect heat pump system of claim 1, wherein, The battery circuit (2) comprises a battery water pump (21) and a battery water cooling plate (22) which are connected to two valve ports of the first multi-way valve (6) through pipelines; and / or 7. The indirect heat pump system of claim 1, wherein, The heat exchange circuit (3) comprises another heat exchange cavity of the second heat exchanger (8) which is connected to two valve ports of the first multi-way valve (6) through pipelines. The battery circuit (2) and the warm air circuit (5) are connected in an on-off mode.

8. The indirect heat pump system of claim 1, wherein, ​ 9. The indirect heat pump system of claim 8, wherein, Also included are a second multi-way valve (14), a first transfer line (10), a second transfer line (20), and a second check valve (30) provided on the first transfer line (10), two valve ports of the second multi-way valve (14) are connected to the heater circuit (5), the first transfer line (10) and the second transfer line (20) are connected in parallel between the battery circuit (2) and the heater circuit (5), and one end of the second transfer line (20) is connected to the other valve port of the second multi-way valve (14).

10. A vehicle characterized by comprising: Comprise: The indirect heat pump system of any one of claims 1-9.

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