Automobile thermal management system and automobile

Abstract

The application provides an automobile thermal management system and an automobile, and belongs to the technical field of traffic equipment. The automobile thermal management system comprises: a refrigerant circulation loop, an evaporative heat exchanger is arranged on the refrigerant circulation loop, and the refrigerant in the refrigerant circulation loop evaporates and absorbs heat in the evaporative heat exchanger; and a heat exchange medium circulation pipeline, two ends of the heat exchange medium circulation pipeline are respectively communicated with a heat exchange medium inlet of the evaporative heat exchanger and a heat exchange medium outlet of the evaporative heat exchanger; wherein, a first heat exchanger, a second heat exchanger and a third heat exchanger are sequentially and serially arranged on the heat exchange medium circulation pipeline, the first heat exchanger is used for a vehicle-mounted refrigerator, the second heat exchanger is used for a passenger cabin, and the third heat exchanger is used for a power battery. The temperature requirements of the vehicle-mounted refrigerator, the passenger cabin and the power battery are sequentially reduced, which is adapted to the temperature requirements of the vehicle-mounted refrigerator, the passenger cabin and the power battery, is beneficial to improving the thermal management efficiency of the automobile and improving the thermal management effect.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, and more particularly to an automotive thermal management system and an automotive. Background Technology

[0002] With the development of the automotive industry, cars are becoming increasingly feature-rich, often equipped with devices such as in-car refrigerators and air conditioners, requiring thermal management. Similarly, automotive devices like power batteries also require thermal management. Currently, the thermal management of in-car refrigerators, air conditioners, and power batteries is typically performed independently, leading to problems such as complex management and poor performance. Summary of the Invention

[0003] This application provides an automotive thermal management system and an automotive vehicle to simplify the management of the automotive thermal management system and improve the thermal management effect.

[0004] This application provides an automotive thermal management system, the automotive thermal management system comprising: A refrigerant circulation loop, wherein an evaporator heat exchanger is installed in the refrigerant circulation loop, and the refrigerant in the refrigerant circulation loop evaporates and absorbs heat within the evaporator heat exchanger; and A heat exchange medium circulation pipeline, the two ends of which are respectively connected to the heat exchange medium inlet and heat exchange medium outlet of the evaporator heat exchanger, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the refrigerant in the refrigerant circulation loop in the evaporator heat exchanger. In this system, from the heat exchange medium outlet of the evaporative heat exchanger to the heat exchange medium inlet of the evaporative heat exchanger, a first heat exchanger, a second heat exchanger, and a third heat exchanger are sequentially connected in series on the heat exchange medium circulation pipeline. The first heat exchanger is used for the vehicle refrigerator, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the vehicle refrigerator in the first heat exchanger. The second heat exchanger is used for the passenger compartment, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the passenger compartment in the second heat exchanger. The third heat exchanger is used for the power battery, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the power battery in the third heat exchanger.

[0005] Compared with related technologies, in this application, the two ends of the heat exchange medium circulation pipeline are connected to the heat exchange medium inlet and outlet of the evaporative heat exchanger, respectively. From the first heat exchange medium outlet to the heat exchange medium inlet of the evaporative heat exchanger, a first heat exchanger, a second heat exchanger, and a third heat exchanger are sequentially connected in series on the heat exchange medium circulation pipeline. The first heat exchanger is used for the vehicle refrigerator, the second heat exchanger is used for the passenger compartment, and the third heat exchanger is used for the power battery. The temperature requirements of the vehicle refrigerator, the passenger compartment, and the power battery decrease sequentially. Therefore, the temperature gradient of the heat exchange medium in the circulation pipeline during the flow process is adapted to the temperature requirements of the vehicle refrigerator, the passenger compartment, and the power battery. This helps to reduce the need for temperature control of the heat exchange medium in the circulation pipeline, thereby improving thermal management efficiency and performance.

[0006] In one embodiment of this application, the automotive thermal management system further includes regulating pipelines and regulating valve groups. The regulating pipelines include a first regulating pipeline and a second regulating pipeline. The first regulating pipeline connects the heat exchange medium inlet of the evaporative heat exchanger and the heat exchange medium outlet of the first heat exchanger. The second regulating pipeline connects the heat exchange medium inlet of the evaporative heat exchanger and the heat exchange medium outlet of the second heat exchanger. The regulating valve groups are used to control the connection or disconnection of the first regulating pipeline and the second regulating pipeline, respectively.

[0007] The beneficial effects of the above embodiments are as follows: the heat exchange medium outlet of the first heat exchanger can be connected to the heat exchange medium inlet of the evaporative heat exchanger through the first regulating pipe, and the heat exchange medium outlet of the second heat exchanger can be connected to the heat exchange medium inlet of the evaporative heat exchanger through the second regulating pipe, so that the heat exchange medium discharged from both the first and second heat exchangers can flow back to the evaporative heat exchanger, thereby regulating the temperature of the heat exchange medium flowing through the evaporative heat exchanger. The regulating valve group can control the connection or disconnection of the first and second regulating pipes respectively, thereby realizing the control of whether to regulate the temperature of the heat exchange medium flowing through the evaporative heat exchanger.

[0008] In one embodiment of this application, the regulating valve group includes a first three-way valve, the inlet of the first three-way valve is connected to the heat exchange medium outlet of the first heat exchanger, one outlet of the first three-way valve is connected to the heat exchange medium inlet of the second heat exchanger, and the other outlet of the first three-way valve is connected to the first regulating pipeline and connected to the heat exchange medium inlet of the evaporating heat exchanger through the first regulating pipeline. The regulating valve group further includes a second three-way valve. The outlet of the second three-way valve is connected to the heat exchange medium inlet of the evaporative heat exchanger. One inlet of the second three-way valve is connected to the second regulating pipeline and is connected to the heat exchange medium outlet of the second heat exchanger through the second regulating pipeline. The other inlet of the second three-way valve is connected to the heat exchange medium outlet of the third heat exchanger.

[0009] The beneficial effects of the above embodiments are that the on / off control of the first regulating pipeline and the second regulating pipeline is realized by the first three-way valve and the second three-way valve respectively, which has the advantages of simple structure and low cost.

[0010] In one embodiment of this application, the regulating pipeline further includes a third regulating pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger, and the regulating valve group is further used to control the connection or disconnection of the third regulating pipeline.

[0011] The beneficial effect of the above embodiment is that the third regulating pipeline connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger, so that the heat exchange medium discharged from the evaporative heat exchanger can flow directly to the heat exchange medium inlet of the second heat exchanger through the third regulating pipeline when the vehicle refrigerator is in heating or other conditions that do not require additional cooling, thereby reducing the waste of cooling capacity.

[0012] In one embodiment of this application, the regulating valve group includes a third three-way valve, the inlet of which is connected to the heat exchange medium outlet of the evaporative heat exchanger, one outlet of which is connected to the heat exchange medium inlet of the first heat exchanger, and the other outlet of which is connected to the heat exchange medium inlet of the second heat exchanger.

[0013] The beneficial effects of the above embodiments are that using a third three-way valve to control the connection or disconnection of the third regulating pipeline has advantages such as simple structure and low cost.

[0014] In one embodiment of this application, the first heat exchanger includes a heat exchanger body and a cold storage device, the heat exchanger body and the cold storage device are connected in series, and one of the heat exchanger body and the cold storage device is connected to the heat exchange medium inlet of the first heat exchanger and the other is connected to the heat exchange medium outlet of the first heat exchanger. The regulating pipeline also includes a first return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger. A liquid pump and a check valve are installed on the first return pipeline. The liquid pump on the first return pipeline is used to drive the heat exchange medium in the first return pipeline to flow from the heat exchange medium outlet of the first heat exchanger to the heat exchange medium inlet of the first heat exchanger.

[0015] The beneficial effects of adopting the above embodiments are that the cold storage device can accumulate cold energy under operating conditions such as vehicle charging and excessive cooling capacity of the evaporative heat exchanger, thereby increasing the vehicle's cold energy storage capacity, which helps to reduce the consumption of energy storage in the vehicle's power battery, and thus helps to increase the vehicle's driving range.

[0016] In one embodiment of this application, the regulating pipeline further includes a second return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the third heat exchanger, and a first throttling valve is provided on the second return pipeline.

[0017] The beneficial effects of the above embodiments are as follows: the heat exchange medium at the outlet of the third heat exchanger can flow back to the inlet of the third heat exchanger via the second return pipe, thereby regulating the temperature of the heat exchange medium entering the third heat exchanger to a temperature suitable for cooling the power battery, which helps to avoid the performance of the power battery being affected by the excessively low temperature of the heat exchange medium. The first throttle valve is installed on the second return pipe; by adjusting the specifications of the first throttle valve, the flow resistance of the second return pipe can be adjusted, which helps to prevent the heat exchange medium at the inlet of the third heat exchanger from flowing directly to the outlet of the third heat exchanger via the second return pipe, thus avoiding insufficient heat exchange medium flowing through the third heat exchanger.

[0018] In one embodiment of this application, there are two second heat exchangers, namely a front heat exchanger for the air conditioning unit in front of the crew compartment and a rear heat exchanger for the air conditioning unit in the rear of the crew compartment. The front heat exchanger and the rear heat exchanger are connected in parallel. The heat exchange medium inlets of the front heat exchanger and the rear heat exchanger are both connected to the heat exchange medium outlet of the first heat exchanger. The heat exchange medium outlets of the front heat exchanger and the rear heat exchanger are both connected to the heat exchange medium inlet of the third heat exchanger.

[0019] The beneficial effects of adopting the above embodiments are that the front heat exchanger and the rear heat exchanger can cool the front and rear parts of the passenger compartment of the car respectively, realize the cooling zone, which is conducive to making the temperature inside the passenger compartment more uniform and improving the passenger's user experience.

[0020] In one embodiment of this application, a condensing heat exchanger is further provided on the refrigerant circulation loop, the refrigerant in the refrigerant circulation loop condenses and absorbs heat in the condensing heat exchanger, the heat exchange medium inlet of the downstream heat exchanger is also connected to the heat exchange medium outlet of the condensing heat exchanger, and the heat exchange medium outlet of the downstream heat exchanger is also connected to the heat exchange medium inlet of the condensing heat exchanger.

[0021] The heat exchange medium in the condensing heat exchanger can flow through the rear heat exchanger, thereby heating the interior of the passenger compartment through the rear heat exchanger. The rear heat exchanger can both heat and cool the passenger compartment, which helps to reduce the number of heat exchangers in the vehicle and reduce vehicle manufacturing costs.

[0022] This application also provides a vehicle equipped with a vehicle thermal management system as described in any of the preceding claims.

[0023] Compared with related technologies, the automobile in this application has its heat exchange medium circulation pipeline connected at both ends to the heat exchange medium inlet and outlet of the evaporative heat exchanger, respectively. The heat exchange medium flows from the first outlet to the evaporative inlet. A first heat exchanger, a second heat exchanger, and a third heat exchanger are sequentially connected in series on the heat exchange medium circulation pipeline. The first heat exchanger is used for the vehicle refrigerator, the second for the passenger compartment, and the third for the power battery. The temperature requirements of the vehicle refrigerator, passenger compartment, and power battery decrease sequentially. Therefore, the temperature gradient of the heat exchange medium during its flow in the circulation pipeline is adapted to the temperature requirements of the vehicle refrigerator, passenger compartment, and power battery. This reduces the need for temperature control of the heat exchange medium in the circulation pipeline, thereby improving thermal management efficiency and effectiveness. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] In the attached diagram: Figure 1 This is a schematic diagram of the connection of the gradient cooling section of an automotive thermal management system provided in one embodiment of this application; Figure 2 This is a connection diagram of an automotive thermal management system provided in one embodiment of this application; Figure 3 This is a schematic diagram of the vehicle thermal management system when the front air conditioner is used for independent cooling, as provided in one embodiment of this application. Figure 4 This is a schematic diagram of the connection of the vehicle thermal management system when the power battery is cooled separately, provided in one embodiment of this application; Figure 5 This is a schematic diagram of the connection of the vehicle thermal management system when the vehicle refrigerator is used for independent cooling and cold storage, provided in one embodiment of this application; Figure 6 This is a schematic diagram of the connection of the vehicle thermal management system when the vehicle refrigerator, front air conditioner, rear air conditioner and power battery are all cooling, according to one embodiment of this application; Figure 7 This is a connection diagram of the vehicle thermal management system when the passenger compartment is heated in heat pump mode, provided in one embodiment of this application. Figure 8 This is a connection diagram of the vehicle thermal management system when the power battery is in heat pump mode for heating, provided in one embodiment of this application; Figure 9This is a schematic diagram of the connection of the vehicle thermal management system when the passenger compartment and the power battery are heated in heat pump mode, as provided in one embodiment of this application.

[0026] The attached figures are labeled as follows: 1. Third three-way valve; 2. First heat exchanger; 3. Cold accumulator; 4. First one-way valve; 5. Fourth three-way valve; 6. Front heat exchanger; 7. Rear heat exchanger; 8. Second one-way valve; 9. First liquid pump; 10. Third heat exchanger; 11. Second liquid pump; 12. Second three-way valve; 13. Third water pump; 14. Expansion valve; 15. Evaporative heat exchanger; 16. Third one-way valve; 17. 18. Expansion tank; 19. Condensing plate heat exchanger; 20. Heater; 21. Battery heating check valve; 22. Second heating check valve; 23. Compressor; 24. Refrigerant bypass electronic expansion valve; 25. Liquid storage dryer; 26. Main circuit electronic expansion valve; 27. Heating water pump; 28. First return water three-way valve; 29. ​​Heater core; 30. Refrigerator circulating water pump; 31. Refrigerator circulating check valve; 32. Cold storage tank; 33. Cooling check valve; 34. First regulating three-way valve; 35. Vehicle refrigerator. 36. Third regulating three-way water valve, 37. Evaporative plate heat exchanger, 38. Cooling water pump, 39. Second return water three-way water valve, 40. Battery water pump, 41. Power battery, 42. Front air conditioning unit cold air core, 43. Nine-way valve, 44. Battery cooling check valve, 45. Air conditioning cooling check valve, 46. Drive motor, 47. Motor water pump, 48. Fan, 49. Low temperature radiator, 50. Third return water three-way water valve, 51. Rear air conditioning unit dual-purpose core, 52. First throttle valve, 53. Refrigerant circulation loop. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0029] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0030] With the development of the automotive industry, automobiles have become increasingly feature-rich, often equipped with devices such as onboard refrigerators and air conditioners, requiring thermal management. Similarly, components in automobiles, such as power batteries, also require thermal management. In related technologies, onboard refrigerators, air conditioners, and power batteries are typically connected in parallel within the thermal management system and regulated independently. This results in a complex and inefficient thermal management system, ultimately leading to poor performance and difficulty in meeting design requirements.

[0031] In view of this, please see Figures 1-9 This application provides an automotive thermal management system and an automotive vehicle to simplify the management of the automotive thermal management system and improve the thermal management effect. For example... Figure 1 As shown, this application provides an automotive thermal management system, which includes a refrigerant circulation loop 53 and a heat exchange medium circulation pipeline. An evaporative heat exchanger 16 is installed on the refrigerant circulation loop 53, and the refrigerant in the refrigerant circulation loop 53 evaporates and absorbs heat within the evaporative heat exchanger 16. The two ends of the heat exchange medium circulation pipeline are respectively connected to the heat exchange medium inlet and the heat exchange medium outlet of the evaporative heat exchanger 16, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the refrigerant in the refrigerant circulation loop 53 within the evaporative heat exchanger 16.

[0032] The heat exchange medium circulation pipeline of the evaporator heat exchanger 16 extends from its outlet to its inlet. A first heat exchanger 2, a second heat exchanger, and a third heat exchanger 11 are connected in series on the pipeline. The first heat exchanger 2 is used for the vehicle refrigerator, where the heat exchange medium in the circulation pipeline exchanges heat with the refrigerator. The second heat exchanger is used for the passenger compartment, where the heat exchange medium in the circulation pipeline exchanges heat with the passenger compartment. The third heat exchanger 11 is used for the power battery, where the heat exchange medium in the circulation pipeline exchanges heat with the power battery.

[0033] Compared with related technologies, in this application, the two ends of the heat exchange medium circulation pipeline are connected to the heat exchange medium inlet and outlet of the evaporator heat exchanger 16, respectively, from the first heat exchange medium outlet to the heat exchange medium inlet of the evaporator heat exchanger 16. A first heat exchanger 2, a second heat exchanger, and a third heat exchanger 11 are sequentially connected in series on the heat exchange medium circulation pipeline. The first heat exchanger 2 is used for the vehicle refrigerator, the second heat exchanger for the passenger compartment, and the third heat exchanger 11 for the power battery. The temperature requirements of the vehicle refrigerator, passenger compartment, and power battery decrease sequentially. Therefore, the temperature gradient of the heat exchange medium during the flow process in the heat exchange medium circulation pipeline is adapted to the temperature requirements of the vehicle refrigerator, passenger compartment, and power battery. This helps reduce the need for temperature control of the heat exchange medium in the circulation pipeline, thereby improving thermal management efficiency and effectiveness.

[0034] In one embodiment of this application, the automotive thermal management system further includes regulating pipelines and regulating valve assemblies. The regulating pipelines include a first regulating pipeline and a second regulating pipeline. The first regulating pipeline connects the heat exchange medium inlet of the evaporator heat exchanger 16 and the heat exchange medium outlet of the first heat exchanger 2. The second regulating pipeline connects the heat exchange medium inlet of the evaporator heat exchanger 16 and the heat exchange medium outlet of the second heat exchanger. The regulating valve assemblies are used to control the connection or disconnection of the first regulating pipeline and the second regulating pipeline, respectively.

[0035] The outlet of the heat exchange medium of the first heat exchanger 2 can be connected to the inlet of the heat exchange medium of the evaporator heat exchanger 16 through a first regulating pipe, and the outlet of the heat exchange medium of the second heat exchanger can be connected to the inlet of the heat exchange medium of the evaporator heat exchanger 16 through a second regulating pipe. This allows the heat exchange medium discharged from both the first and second heat exchangers to flow back to the evaporator heat exchanger 16, thereby regulating the temperature of the heat exchange medium flowing through the evaporator heat exchanger 16. The regulating valve group can control the connection or disconnection of the first and second regulating pipes respectively, thereby controlling whether the temperature of the heat exchange medium flowing through the evaporator heat exchanger 16 is regulated.

[0036] In one embodiment of this application, the regulating valve group includes a first three-way valve 5. The inlet of the first three-way valve 5 is connected to the heat exchange medium outlet of the first heat exchanger 2, one outlet of the first three-way valve 5 is connected to the heat exchange medium inlet of the second heat exchanger, and the other outlet of the first three-way valve 5 is connected to the first regulating pipeline and connected to the heat exchange medium inlet of the evaporating heat exchanger 16 through the first regulating pipeline.

[0037] The regulating valve group also includes a second three-way valve 13. The outlet of the second three-way valve 13 is connected to the heat exchange medium inlet of the evaporative heat exchanger 16. One inlet of the second three-way valve 13 is connected to the second regulating pipeline and is connected to the heat exchange medium outlet of the second heat exchanger through the second regulating pipeline. The other inlet of the second three-way valve 13 is connected to the heat exchange medium outlet of the third heat exchanger 11.

[0038] The on / off control of the first regulating pipeline and the second regulating pipeline is achieved by the first three-way valve 5 and the second three-way valve 13, respectively. It has the advantages of simple structure and low cost.

[0039] In one embodiment of this application, the regulating pipeline further includes a third regulating pipeline, which is connected to the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger 2, and the regulating valve group is also used to control the connection or disconnection of the third regulating pipeline.

[0040] The third regulating pipeline connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger 2, so that the heat exchange medium discharged from the evaporative heat exchanger 16 can flow directly to the heat exchange medium inlet of the second heat exchanger through the third regulating pipeline when the vehicle refrigerator is in heating or other conditions that do not require additional cooling, thereby reducing the waste of cooling capacity.

[0041] In one embodiment of this application, the regulating valve group includes a third three-way valve 1. The inlet of the third three-way valve 1 is connected to the heat exchange medium outlet of the evaporator heat exchanger 16, one outlet of the third three-way valve 1 is connected to the heat exchange medium inlet of the first heat exchanger 2, and the other outlet of the third three-way valve 1 is connected to the heat exchange medium inlet of the second heat exchanger.

[0042] Using a third three-way valve 1 to control the connection or disconnection of the third regulating pipeline has advantages such as simple structure and low cost.

[0043] In one embodiment of this application, the first heat exchanger 2 includes a heat exchanger body and a cold storage 3, which are connected in series. One of the heat exchanger body and the cold storage 3 is connected to the heat exchange medium inlet of the first heat exchanger 2, and the other is connected to the heat exchange medium outlet of the first heat exchanger 2.

[0044] The regulating pipeline also includes a first return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger 2. A liquid pump and a check valve are installed on the first return pipeline. The liquid pump on the first return pipeline is used to drive the heat exchange medium in the first return pipeline to flow from the heat exchange medium outlet of the first heat exchanger 2 to the heat exchange medium inlet of the first heat exchanger 2.

[0045] The cold storage unit 3 can accumulate cold energy under conditions such as vehicle charging and excessive cooling capacity of the evaporative heat exchanger 16, thereby increasing the vehicle's cold energy storage capacity, reducing the consumption of energy stored in the vehicle's power battery, and thus improving the vehicle's driving range.

[0046] In one embodiment of this application, the regulating pipeline further includes a second return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the third heat exchanger 11, and the second return pipeline is provided with a first throttle valve 52.

[0047] The heat exchange medium at the outlet of the third heat exchanger 11 can flow back to the inlet of the third heat exchanger 11 via the second return pipe, thereby regulating the temperature of the heat exchange medium entering the third heat exchanger 11 to a temperature suitable for cooling the power battery. This helps prevent the heat exchange medium temperature from being too low and affecting the performance of the power battery. The first throttle valve 52 is installed on the second return pipe. By adjusting the specifications of the first throttle valve 52, the flow resistance of the second return pipe can be adjusted. This helps prevent the heat exchange medium at the inlet of the third heat exchanger 11 from flowing directly from the second return pipe to the outlet of the third heat exchanger 11, which would result in insufficient heat exchange medium flowing through the third heat exchanger 11.

[0048] In one embodiment of this application, there are two second heat exchangers. The two second heat exchangers are a front heat exchanger 7 for the air conditioning unit in front of the crew compartment and a rear heat exchanger 8 for the air conditioning unit in the rear of the crew compartment. The front heat exchanger 7 and the rear heat exchanger 8 are connected in parallel. The heat exchange medium inlets of the front heat exchanger 7 and the rear heat exchanger 8 are connected to the heat exchange medium outlet of the first heat exchanger 2. The heat exchange medium outlets of the front heat exchanger 7 and the rear heat exchanger 8 are connected to the heat exchange medium inlet of the third heat exchanger 11.

[0049] The front heat exchanger 7 and the rear heat exchanger 8 can cool the front and rear parts of the passenger compartment of the car respectively, realizing cooling zoning, which helps to make the temperature inside the passenger compartment more uniform and improves the passenger's experience.

[0050] In one embodiment of this application, a condensing heat exchanger is also provided on the refrigerant circulation loop 53. The refrigerant in the refrigerant circulation loop 53 condenses and absorbs heat in the condensing heat exchanger. The heat exchange medium inlet of the subsequent heat exchanger 8 is also connected to the heat exchange medium outlet of the condensing heat exchanger, and the heat exchange medium outlet of the subsequent heat exchanger 8 is also connected to the heat exchange medium inlet of the condensing heat exchanger.

[0051] The heat exchange medium in the condensing heat exchanger can flow through the rear heat exchanger 8, thereby heating the interior of the passenger compartment through the rear heat exchanger 8. The rear heat exchanger 8 can both heat and cool the passenger compartment, which helps to reduce the number of heat exchangers in the vehicle and reduce vehicle manufacturing costs.

[0052] In one embodiment of this application, the refrigerant in the refrigerant circulation loop 53 is R290, and there is only one evaporator heat exchanger 16 in the vehicle thermal management system, which helps to reduce the amount of refrigerant added and improves the application safety of R290.

[0053] This application also provides a car equipped with a car thermal management system as described in any of the preceding claims.

[0054] In summary, compared with related technologies, the automotive thermal management system and vehicle of this application have their heat exchange medium circulation pipeline connected at both ends to the heat exchange medium inlet and outlet of the evaporator heat exchanger 16, respectively. The heat exchange medium flows from the first outlet to the inlet. A first heat exchanger 2, a second heat exchanger, and a third heat exchanger 11 are sequentially connected in series on the heat exchange medium circulation pipeline. The first heat exchanger 2 is used for the vehicle refrigerator, the second heat exchanger for the passenger compartment, and the third heat exchanger 11 for the power battery. The temperature requirements of the vehicle refrigerator, passenger compartment, and power battery decrease sequentially. Therefore, the temperature gradient of the heat exchange medium during its flow in the heat exchange medium circulation pipeline is adapted to the temperature requirements of the vehicle refrigerator, passenger compartment, and power battery. This helps reduce the need for temperature control of the heat exchange medium in the circulation pipeline, thereby improving thermal management efficiency and effectiveness.

[0055] In one embodiment of this application, the heat exchange medium in the heat exchange medium circulation pipeline is cooling water. Cooling water has a high specific heat capacity, low cost, and is suitable for vehicle use.

[0056] In one embodiment of this application, the automotive thermal management system includes a temperature gradient management subsystem, the core of which is as follows: Figure 1 As shown. Figure 2 As shown, the temperature gradient management subsystem includes a refrigerant circulation loop 53 located on the refrigerant side of the vehicle's thermal management system and a low-temperature refrigeration loop located on the cooling water side of the vehicle's thermal management system. The refrigerant circulation loop 53 is used to meet the vehicle's cooling needs. The refrigerant circulation loop 53 is equipped with a compressor, an electronic expansion valve 15, and a single evaporator plate heat exchanger connected in series with the electronic expansion valve 15.

[0057] In one embodiment of this application, the cryogenic refrigeration circuit includes an evaporator heat exchanger 16 and a heat exchange medium circulation pipeline. The heat exchange medium inlet of the heat exchange medium circulation pipeline is connected to the heat exchange medium outlet of the evaporator heat exchanger 16, and the heat exchange medium outlet of the heat exchange medium circulation pipeline is connected to the heat exchange medium inlet of the evaporator heat exchanger 16, forming a complete closed cryogenic refrigeration circuit.

[0058] In one embodiment of this application, the automobile includes an in-vehicle refrigerator, a power battery, and an in-vehicle air conditioner. The in-vehicle air conditioner includes a front air conditioning unit and a rear air conditioning unit. A first heat exchanger 2 is disposed inside the in-vehicle refrigerator and is used for cooling by the in-vehicle air conditioner. A front heat exchanger 7 of the second heat exchanger is disposed inside the front air conditioning unit and is used for cooling. A rear heat exchanger 8 of the second heat exchanger is disposed inside the rear air conditioning unit and can be used for both cooling and heating.

[0059] The water circuits of the front air conditioning unit, power battery, vehicle refrigerator and rear air conditioning unit are coupled. Temperature gradient regulation is achieved by adjusting the mixing ratio of heat exchange medium through adjusting pipelines and regulating valve group. Compared with multi-stage plate heat exchangers, adjusting the mixing ratio of cooling water can achieve higher heat exchange efficiency and significantly improve the heating and cooling rates.

[0060] In one embodiment of this application, a second liquid pump 12 is installed on the heat exchange medium circulation pipeline between the outlet of the second three-way valve 13 and the heat exchange medium inlet of the evaporator heat exchanger 16. The second liquid pump 12 drives the heat exchange medium in the heat exchange medium circulation pipeline to circulate in the low-temperature refrigeration circuit. A second one-way valve 9 is installed on the heat exchange medium circulation pipeline between the heat exchange medium outlet of the second heat exchanger and the heat exchange medium inlet of the third heat exchanger 11, so that the heat exchange medium in the heat exchange medium circulation pipeline between the heat exchange medium outlet of the second heat exchanger and the heat exchange medium inlet of the third heat exchanger 11 flows from the second heat exchanger to the third heat exchanger 11.

[0061] In one embodiment of this application, three different temperature gradient requirements are met in the cooling scenario (the cooling temperature requirement range for the vehicle refrigerator is -20℃ to -6℃, the cooling temperature requirement range for the passenger compartment is 1℃ to 10℃, and the cooling temperature requirement range for the power battery is 20℃ to 30℃). In the heating scenario, two different temperature gradient requirements are met (the heating temperature requirement range for the passenger compartment is 30℃ to 70℃, and the heating temperature requirement range for the power battery is 10℃ to 40℃).

[0062] In one embodiment of this application, the automotive thermal management system further includes an expansion tank 18, a condensing plate heat exchanger 19, a heater 20, a battery heating check valve 21, a second heating check valve 22, a compressor 23, a refrigerant bypass electronic expansion valve 24, a receiver-drier tank 25, a main circuit electronic expansion valve 26, a heating water pump 27, a first return water three-way valve 28, a heater core 29, a refrigerator circulating water pump 30, a refrigerator circulating check valve 31, a cold storage tank 32, and a cooling check valve 33. 34. First regulating three-way water valve, 35. Vehicle refrigerator, 36. Third regulating three-way water valve, 37. Evaporative plate heat exchanger, 38. Cooling water pump, 39. Second return water three-way water valve, 40. Battery water pump, 41. Power battery, 42. Front air conditioning unit cold air core, 43. Nine-way valve, 44. Battery cooling check valve, 45. Air conditioning cooling check valve, 46. Drive motor, 47. Motor water pump, 48. Fan, 49. Low temperature radiator, 50. Third return water three-way water valve, and 51. Rear air conditioning unit dual-purpose core.

[0063] Among them, the third regulating three-way water valve 36 is the third three-way valve 1, the first heat exchanger 2 is installed in the vehicle refrigerator 35, the cold storage tank 32 is the cold storage 3, the cooling one-way valve 33 is the first one-way valve 4, the first regulating three-way water valve 34 is the first three-way valve 5, the nine-way valve 43 replaces the fourth three-way valve 6, the front air conditioning unit cold air core 42 is the front heat exchanger 7, the rear air conditioning unit dual-purpose core 51 is the rear heat exchanger 8, the battery cooling one-way valve 44 is the second one-way valve 9, and the battery... Water pump 40 is the first liquid pump 10, the third heat exchanger 11 is located in the power battery 41, cooling water pump 38 is the second liquid pump 12, the second return water three-way valve 39 is the second three-way valve 13, refrigerator circulating water pump 30 is the third water pump 14, main circuit electronic expansion valve 26 is the expansion valve 15, evaporative plate heat exchanger 37 is the evaporative heat exchanger 16, refrigerator circulating one-way valve 31 is the third one-way valve 17, and condensing plate heat exchanger 19 is the condensing heat exchanger.

[0064] The nine-way valve 43 has nine ports, which are numbered S1, S2, S3, S4, S5, S6, S7, S8, and S9 in sequence. S1 is connected to one of the outlets of the first regulating three-way water valve 34, and S2 is connected to the inlet of the rear air conditioning unit dual-purpose core 51. The air conditioning cooling one-way valve 45 is installed on the pipeline between S2 and the inlet of the rear air conditioning unit dual-purpose core 51 for connection, so that the heat exchange medium in the pipeline flows unidirectionally from S2 to the inlet of the rear air conditioning unit dual-purpose core 51.

[0065] S3 is connected to one interface of the front air conditioning unit's cooling air core 42, while the other interface of the front air conditioning unit's cooling air core 42 is connected to S2.

[0066] S4 is connected to the heat exchange medium inlet of the battery water pump 40, and then connected to the heat exchange medium inlet of the power battery 41 through the battery water pump 40. A battery cooling check valve 44 is installed on the pipeline between S4 and the heat exchange medium inlet of the battery water pump 40 for connection, so that the heat exchange medium in the pipeline flows unidirectionally from S4 to the battery water pump 40.

[0067] S5 is connected to the heat exchange medium outlet of the drive motor 46, and the heat exchange medium inlet of the drive motor 46 is connected to the heat exchange medium outlet of the low-temperature radiator 49. A motor water pump 47 is installed on the pipeline connecting the heat exchange medium outlet of the low-temperature radiator 49 and the heat exchange medium inlet of the drive motor 46 to drive the heat exchange medium in this pipeline to flow from the heat exchange medium outlet of the low-temperature radiator 49 to the heat exchange medium inlet of the drive motor 46. The heat exchange medium outlet of the low-temperature radiator 49 is also connected to S6 and the heat exchange medium outlet of the expansion tank 18. The heat exchange medium outlet of the expansion tank 18 is also connected to the heat exchange medium inlet of the power battery 41 to replenish the heat exchange medium to the cooling water side of the vehicle thermal management system. The heat exchange medium inlet of the expansion tank 18 is connected to the heat exchange medium outlets of the low-temperature radiator 49 and the power battery 41 to collect excess heat exchange medium from the cooling water side. Throttling valves are installed on the pipes connecting the heat exchange medium inlet of the expansion tank 18 to the low-temperature radiator 49, and on the pipes connecting the heat exchange medium inlet of the expansion tank 18 to the heat exchange medium outlet of the power battery 41. The expansion tank 18 can hold excess coolant after thermal expansion, which helps maintain the pressure stability of the coolant side of the vehicle's thermal management system. It can also separate gas to prevent air blockage and play an auxiliary role in water replenishment.

[0068] S7 is connected to the heat exchange medium inlet of the low-temperature radiator 49. The airflow generated by the fan 48 acts on the low-temperature radiator 49 to exchange heat with it. S8 is connected to the heat exchange medium outlet of the heater 20. The heat exchange medium inlet of the heater 20 is connected to the heat exchange medium outlet of the condensing plate heat exchanger 19. The heat exchange medium outlet of the condensing plate heat exchanger 19 is connected to the outlet of the first return water three-way valve 28. Of the two inlets of the first return water three-way valve 28, one inlet is connected to the heat exchange medium outlet of the rear air conditioning unit dual-purpose core 51, and the other inlet is connected to the heat exchange medium outlet of the heating core 29. The heat exchange medium inlet of the heating core 29 is connected to S9.

[0069] The heat exchange medium outlet of heater 20 is also connected to the heat exchange medium inlet of battery water pump 40 and the heat exchange medium inlet of the dual-purpose rear air conditioning unit 51. A battery heating check valve 21 is installed on the pipeline connecting the heat exchange medium outlet of heater 20 and the heat exchange medium inlet of battery water pump 40, so that the heat exchange medium in the pipeline flows unidirectionally from the heat exchange medium outlet of heater 20 to the heat exchange medium inlet of battery water pump 40. A second heating check valve 22 is installed on the pipeline connecting the heat exchange medium outlet of heater 20 and the heat exchange medium inlet of the dual-purpose rear air conditioning unit 51, so that the heat exchange medium in the pipeline flows unidirectionally from the heat exchange medium outlet of heater 20 to the heat exchange medium inlet of the dual-purpose rear air conditioning unit 51.

[0070] One inlet of the second return water three-way valve 39 is connected to the heat exchange medium outlet of the power battery 41, and the other inlet of the second return water three-way valve 39 and the heat exchange medium outlet of the rear air conditioning unit dual-purpose core 51 are connected to S4. Furthermore, the connection point between the inlet of the second return water three-way valve 39, the heat exchange medium outlet of the rear air conditioning unit dual-purpose core 51, and S4 is located between S4 and the battery cooling one-way valve 44.

[0071] In one embodiment of this application, the compressor 23, the refrigerant bypass electronic expansion valve 24, the liquid receiver-drier 25, and the main circuit electronic expansion valve 26 are disposed on the refrigerant circulation loop 53 of the vehicle thermal management system. Specifically, along the refrigerant flow direction in the refrigerant circulation loop 53, the liquid receiver-drier 25 and the main circuit electronic expansion valve 26 are sequentially connected in series on the refrigerant circulation loop 53 between the condensing plate heat exchanger 19 and the evaporating plate heat exchanger 37, while the compressor 23 and the refrigerant bypass electronic expansion valve 24 are sequentially connected in series on the refrigerant circulation loop 53 between the evaporating plate heat exchanger 37 and the condensing plate heat exchanger 19, and the compressor 23 and the refrigerant bypass electronic expansion valve 24 are connected in parallel.

[0072] Figures 3-9 In the diagram, the red line represents the circulating flow path of the heat exchange medium flowing through the condensing plate heat exchanger 19, the light blue line represents the circulating flow path of the heat exchange medium flowing through the evaporating plate heat exchanger 37, and the dark blue line represents the circulating flow path of the refrigerant in the refrigerant circulation loop 53.

[0073] like Figure 3 As shown, in one embodiment of this application, when the front air conditioning unit is cooling alone, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is open, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is closed. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed.

[0074] In the nine-way valve 43, S1 connects to S2, S9 connects to S5, and S8 connects to S7. The inlet of the second return water three-way valve 39 connected to S4 is open, and the inlet connected to the power battery 41 is closed. The third return water three-way valve 50 does not participate in the circulation.

[0075] When the cooling water pump 38, heating water pump 27 and motor water pump 47 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0076] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0077] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20, the S8 and S7 ports of the nine-way valve 43, and the low-temperature radiator 49. It is cooled within the low-temperature radiator 49. The heater 20 is not operating. The cooled heat exchange medium discharged from the low-temperature radiator 49, under the action of the motor-pump 47, flows sequentially through the drive motor 46, the S5 and S6 ports of the nine-way valve 43, the warm air core 29, and the first return water three-way valve 28. Under the action of the heating water pump 27, it returns to the condensing plate heat exchanger 19 to continue the circulation. The cooled heat exchange medium discharged from the low-temperature radiator 49, when flowing through the drive motor 46, can absorb heat and cool the drive motor 46.

[0078] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 for condensation and heat release, then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. In the evaporating plate heat exchanger 37, it evaporates and absorbs heat. The refrigerant after absorbing heat returns to the compressor 23 to continue the cycle. The refrigerant in the evaporating plate heat exchanger 37 cools the heat exchange medium within it. The cooled heat exchange medium sequentially passes through the third regulating three-way water valve 36, the first regulating three-way water valve 34, the S1 and S2 gates of the nine-way valve 43, and the front air conditioning unit's cold air core 42. In the front air conditioning unit's cold air core 42, it absorbs heat and cools the interior environment of the passenger compartment. The heat exchange medium discharged from the front air conditioning unit's cold air core 42 flows through the S3 and S4 gates of the nine-way valve 43 and the second return water three-way water valve 39 to the cooling water pump 38, and returns to the evaporating plate heat exchanger 37 under the action of the cooling water pump 38 to continue the cycle.

[0079] like Figure 4 As shown, in one embodiment of this application, when the power battery is used for cooling alone, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is open, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is closed. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed. In the nine-way valve 43, S1 connects to S4, S9 connects to S5, and S8 connects to S7. The inlet of the second return water three-way water valve 39 connected to S4 is closed, and the inlet connected to the third heat exchanger 11 in the power battery 41 is open. The third return water three-way water valve 50 does not participate in the circulation.

[0080] When the cooling water pump 38, heating water pump 27 and motor water pump 47 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0081] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0082] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20, the S8 and S7 ports of the nine-way valve 43, and the low-temperature radiator 49. It is cooled in the low-temperature radiator 49. The heater 20 is not working. The cooled heat exchange medium discharged from the low-temperature radiator 49 flows sequentially through the drive motor 46, the S5 and S6 ports of the nine-way valve 43, the warm air core 29, and the first return water three-way valve 28 under the action of the motor water pump 47. It then returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation.

[0083] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0084] The refrigerant in the evaporative plate heat exchanger 37 cools the heat exchange medium in the evaporative plate heat exchanger 37. The cooled heat exchange medium passes sequentially through the third regulating three-way water valve 36, the first regulating three-way water valve 34, the S1 and S4 of the nine-way valve 43, and the battery cooling one-way valve 44, and flows to the battery water pump 40. Under the action of the battery water pump 40, it flows through the third heat exchanger 11 of the power battery 41 to absorb heat and cool the power battery 41. The heat exchange medium discharged from the power battery 41 passes through the second return water three-way water valve 39 and flows to the cooling water pump 38. Under the action of the cooling water pump 38, it returns to the evaporative plate heat exchanger 37 to continue the circulation.

[0085] like Figure 5 As shown, in one embodiment of this application, when the vehicle refrigerator is cooling and storing cold independently, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is closed, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is open. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed. In the nine-way valve 43, S1 connects to S4, S9 connects to S5, and S8 connects to S7. The inlet of the second return water three-way water valve 39 connected to S4 is open, and the inlet connected to the third heat exchanger 11 in the power battery 41 is closed. The third return water three-way water valve 50 does not participate in the circulation.

[0086] When the cooling water pump 38, heating water pump 27 and motor water pump 47 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0087] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0088] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20, the S8 and S7 ports of the nine-way valve 43, and the low-temperature radiator 49. It is cooled in the low-temperature radiator 49. The heater 20 is not working. The cooled heat exchange medium discharged from the low-temperature radiator 49 flows sequentially through the drive motor 46, the S5 and S6 ports of the nine-way valve 43, the warm air core 29, and the first return water three-way valve 28 under the action of the motor water pump 47. It then returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation.

[0089] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0090] The refrigerant in the evaporative plate heat exchanger 37 cools the heat exchange medium in the evaporative plate heat exchanger 37. The cooled heat exchange medium then passes sequentially through the third regulating three-way water valve 36, the vehicle refrigerator 35, and the cold storage tank 32, absorbing heat and cooling the vehicle refrigerator 35 and the cold storage tank 32. The cold storage tank 32 stores the cold energy. After absorbing heat, the heat exchange medium passes sequentially through the first regulating three-way water valve 34, the S1 and S4 of the nine-way valve 43, and the second return three-way water valve 39, flowing to the cooling water pump 38. Under the action of the cooling water pump 38, it returns to the evaporative plate heat exchanger 37 to continue the circulation.

[0091] like Figure 6 As shown, in one embodiment of this application, when the vehicle refrigerator 35, the front air conditioning unit, the rear air conditioning unit, and the power battery 41 all have cooling needs, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The first regulating three-way water valve 34 is a proportional three-way valve; its inlet is open, and both outlets are proportionally open. The inlet of the third regulating three-way water valve 36 is open, its outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is open, and its other outlet connected to the inlet of the first regulating three-way water valve 34 is closed. The inlet of the first regulating three-way water valve 34 and its outlet connected to the nine-way valve 43 are open, and the other outlet is closed. In the nine-way valve 43, S1 connects to S2, S3 connects to S4, S9 connects to S5, and S8 connects to S7. The inlet of the third return water three-way valve 50 and the outlet connecting the third return water three-way valve 50 to the third heat exchanger 11 are open, while the outlet connecting to the first return water three-way valve 28 is closed. The second return water three-way valve 39 is a proportional three-way valve, and its two inlets are proportionally open.

[0092] When the cooling water pump 38, heating water pump 27 and motor water pump 47 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0093] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0094] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20, the S8 and S7 ports of the nine-way valve 43, and the low-temperature radiator 49. It is cooled in the low-temperature radiator 49. The heater 20 is not working. The cooled heat exchange medium discharged from the low-temperature radiator 49 flows sequentially through the drive motor 46, the S5 and S6 ports of the nine-way valve 43, the warm air core 29, and the first return water three-way valve 28 under the action of the motor water pump 47. It then returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation.

[0095] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0096] The refrigerant in the evaporative plate heat exchanger 37 cools the heat exchange medium in the evaporative plate heat exchanger 37. The cooled heat exchange medium then passes sequentially through the third regulating three-way water valve 36, the vehicle refrigerator 35, and the cold storage tank 32, absorbing heat and cooling the vehicle refrigerator 35 and the cold storage tank 32. The cold storage tank 32 stores the cold energy. After absorbing heat, the heat exchange medium passes through the first regulating three-way water valve 34. Part of the heat exchange medium flows back to the heat exchange medium inlet of the evaporative plate heat exchanger 37, while the other part flows into the nine-way valve 43 at S1 and flows out through S2. Part of the heat exchange medium flowing out of S2 flows into the front air conditioning unit's cold air core 42, where it absorbs heat and cools the interior environment of the passenger compartment. The heat exchange medium discharged from the front air conditioning unit's cold air core 42 flows sequentially into the S3 of the nine-way valve 43 and flows out through S4. Another part of the heat exchange medium flowing out of S2 flows into the rear air conditioning unit's dual-purpose core 51, where it absorbs heat and cools the interior environment of the passenger compartment. The heat exchange medium that has absorbed heat in the rear air conditioning unit's dual-purpose core 51 passes through the third return water three-way valve 50 and merges with the heat exchange medium flowing out of S4. After merging, part of the heat exchange medium flows directly to one inlet of the second return water three-way valve 39 and returns to the evaporative plate heat exchanger 37 under the action of the cooling water pump 38 to continue the circulation; the other part of the heat exchange medium passes through the battery cooling check valve 44, flows to the battery water pump 40, and flows through the third heat exchanger 11 of the power battery 41 under the action of the battery water pump 40 to absorb heat and cool the power battery 41. The heat exchange medium discharged from the power battery 41 flows to the other inlet of the second return water three-way valve 39 and returns to the evaporative plate heat exchanger 37 under the action of the cooling water pump 38 to continue the circulation.

[0097] The first regulating three-way water valve 34 and the second return water three-way water valve 39 are proportional three-way valves. The two outlets of the first regulating three-way water valve 34 are proportionally open, which can regulate the flow rate of the heat exchange medium returning to the evaporative plate heat exchanger 37, thereby regulating the temperature of the heat exchange medium flowing through the evaporative plate heat exchanger 37. The two inlets of the second return water three-way water valve 39 are proportionally open, which can regulate the flow rate of the heat exchange medium entering the two inlets of the second return water three-way water valve 39 respectively, thereby controlling the mixing ratio of the heat exchange medium flowing through the power battery 41 and the heat exchange medium not flowing through the power battery 41, so as to adapt to the different temperature gradient requirements of the passenger compartment and the power battery.

[0098] like Figure 7 As shown, in one embodiment of this application, when the passenger compartment is heated using the heat pump principle, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is open, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is closed. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed.

[0099] In the nine-way valve 43, S1 connects to S7, S4 connects to S5, the inlet of the second return water three-way valve 39 connected to S4 is open, and the inlet connected to the power battery 41 is closed. The third return water three-way valve 50 does not participate in the circulation.

[0100] When the cooling water pump 38 and the heating water pump 27 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0101] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0102] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20 and the S8 and S9 ports of the nine-way valve 43 to the warm air core 29, where it exchanges heat with the interior environment of the passenger compartment to heat the passenger compartment. The heat exchange medium flowing out of the warm air core 29 flows to the first return water three-way valve 28 and returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation. The heater 20 can be operated to increase the heat carried by the heat exchange medium, thereby improving the heating effect on the passenger compartment.

[0103] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0104] The refrigerant in the evaporative plate heat exchanger 37 absorbs heat from the heat exchange medium in the evaporative plate heat exchanger 37 and is cooled. After absorbing heat, the cooled heat exchange medium passes sequentially through the third regulating three-way water valve 36, the first regulating three-way water valve 34, the S1 and S7 of the nine-way valve 43, and the low-temperature radiator 49. In the low-temperature radiator 49, it absorbs heat from the external environment. After absorbing heat in the low-temperature radiator 49, the heat exchange medium flows to the motor water pump 47. Under the action of the motor water pump 47, it flows through the drive motor 46 to absorb the heat generated during the operation of the drive motor 46. After absorbing heat from the drive motor 46, the heat exchange medium passes through the S5 and S4 of the nine-way valve 43 and the second return water three-way water valve 39, flows to the cooling water pump 38, and returns to the evaporative plate heat exchanger 37 under the action of the cooling water pump 38 to continue the circulation.

[0105] like Figure 8As shown, in one embodiment of this application, when the power battery is heated using the heat pump principle, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is open, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is closed. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed.

[0106] In the nine-way valve 43, S1 connects to S7, S4 connects to S5, the inlet of the second return water three-way valve 39 connected to S4 is open, and the inlet connected to the power battery 41 is closed. The third return water three-way valve 50 does not participate in the circulation.

[0107] When the cooling water pump 38 and the heating water pump 27 are working, the outlet of the first return water three-way valve 28 and the inlet connected to the condensing plate heat exchanger 19 are opened, and the other inlet is closed.

[0108] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0109] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 flows sequentially through the heater 20 and the S8 and S9 ports of the nine-way valve 43 to the warm air core 29, where it exchanges heat with the occupant's interior environment to heat the occupant compartment. The heat exchange medium flowing out of the warm air core 29 flows to the first return water three-way valve 28 and returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation. The heater 20 can operate to increase the heat carried by the heat exchange medium, thereby improving the heating effect on the occupant compartment.

[0110] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows sequentially through the liquid storage dryer 25 and the evaporating plate heat exchanger 37. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0111] The refrigerant in the evaporative plate heat exchanger 37 absorbs heat from the heat exchange medium in the evaporative plate heat exchanger 37 and is cooled. After absorbing heat, the cooled heat exchange medium passes sequentially through the third regulating three-way water valve 36, the first regulating three-way water valve 34, the S1 and S7 of the nine-way valve 43, and the low-temperature radiator 49. In the low-temperature radiator 49, it absorbs heat from the external environment. After absorbing heat in the low-temperature radiator 49, the heat exchange medium flows to the motor water pump 47. Under the action of the motor water pump 47, it flows through the drive motor 46 to absorb the heat generated during the operation of the drive motor 46. After absorbing heat from the drive motor 46, the heat exchange medium passes through the S5 and S4 of the nine-way valve 43 and the second return water three-way water valve 39, flows to the cooling water pump 38, and returns to the evaporative plate heat exchanger 37 under the action of the cooling water pump 38 to continue the circulation.

[0112] like Figure 9 As shown, in one embodiment of this application, when the heat pump principle is used to meet the heating needs of the passenger compartment and the power battery, the compressor 23 operates, and the bypass electronic expansion valve 24 is closed. The inlet of the third regulating three-way water valve 36 is open, the outlet connected to the inlet of the first regulating three-way water valve 34 is open, and the other outlet connected to the heat exchange medium inlet of the vehicle refrigerator 35 is closed. The inlet of the first regulating three-way water valve 34 and the outlet connected to the nine-way valve 43 are open, and the other outlet is closed.

[0113] In the nine-way valve 43, S1 connects to S7, and S4 connects to S5. The inlet of the second return water three-way valve 39 connected to S4 is open, and the inlet connected to the power battery 41 is closed.

[0114] Cooling water pump 38 and heating water pump 27 are working, and the outlet and two inlets of the first return water three-way valve 28 are both open.

[0115] In the refrigerant circulation loop 53, the refrigerant is compressed by the compressor 23 and then flows to the condensing plate heat exchanger 19 for condensation and heat release.

[0116] After absorbing heat, the heat exchange medium in the condensing plate heat exchanger 19 passes through the heater 20. Part of the heat exchange medium passing through the heater 20 flows to the battery water pump 40 via the battery heating check valve 21, and then flows through the third heat exchanger 11 of the power battery 41 under the action of the battery water pump 40 to release heat and raise the temperature of the power battery 41. The outlet of the heat exchange medium in the third heat exchanger 11 is also connected to one inlet of the first return water three-way valve 28, allowing the heat exchange medium discharged from the power battery 41 to flow to the first return water three-way valve 28 and return to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation.

[0117] The heat exchange medium passing through heater 20 has a portion flowing through the second heating check valve 22 to the rear air conditioning unit dual-purpose core 51 to release heat and raise the temperature of the passenger compartment interior. The released heat exchange medium is discharged from the rear air conditioning unit dual-purpose core 51 and flows to the third return water three-way valve 50. The outlet of the third return water three-way valve 50, which is connected to the second return water three-way valve 39, is closed, while the outlet of the third return water three-way valve 50 is open. The heat exchange medium discharged from the rear air conditioning unit dual-purpose core 51 flows to the first return water three-way valve 28 and returns to the condensing plate heat exchanger 19 under the action of the heating water pump 27 to continue the circulation.

[0118] A portion of the heat exchange medium passing through heater 20 flows through ports S8 and S9 of nine-way valve 43 to the heating core 29, where it exchanges heat with the occupant's interior environment to heat the occupant compartment. The heat exchange medium flowing out of the heating core 29 flows to the first return water three-way valve 28 and, under the action of heating water pump 27, returns to the condensing plate heat exchanger 19 to continue the circulation.

[0119] The heater 20 can operate to heat the heat exchange medium as it flows through the heater 20, thereby increasing the heat carried in the heat exchange medium and thus improving the heating effect.

[0120] The refrigerant in the refrigerant circulation loop 53 flows through the condensing plate heat exchanger 19 to condense and release heat, and then flows through the liquid storage dryer 25 and the evaporating plate heat exchanger 37 in sequence. It evaporates and absorbs heat in the evaporating plate heat exchanger 37, and the refrigerant after absorbing heat returns to the compressor 23 to continue the circulation.

[0121] The refrigerant in the evaporative plate heat exchanger 37 absorbs heat from the heat exchange medium in the evaporative plate heat exchanger 37 and is cooled. After absorbing heat, the cooled heat exchange medium passes sequentially through the third regulating three-way water valve 36, the first regulating three-way water valve 34, the S1 and S7 of the nine-way valve 43, and the low-temperature radiator 49. In the low-temperature radiator 49, it absorbs heat from the external environment. After absorbing heat in the low-temperature radiator 49, the heat exchange medium flows to the motor water pump 47. Under the action of the motor water pump 47, it flows through the drive motor 46 to absorb the heat generated during the operation of the drive motor 46. After absorbing heat from the drive motor 46, the heat exchange medium passes through the S5 and S4 of the nine-way valve 43 and the second return water three-way water valve 39, and returns to the evaporative plate heat exchanger 37 under the action of the cooling water pump 38 to continue the circulation.

[0122] The first return water three-way valve 28 is a proportional three-way valve with two inlets that can be proportionally adjusted. By adjusting the inlet and outlet water flow of the power battery 41 and through the self-circulation mixing of the power battery 41, the different temperature gradient requirements of the passenger compartment and the power battery can be met.

[0123] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A vehicle thermal management system, characterized in that, include: A refrigerant circulation loop is provided, wherein an evaporator heat exchanger is installed on the refrigerant circulation loop, and the refrigerant in the refrigerant circulation loop evaporates and absorbs heat in the evaporator heat exchanger; as well as A heat exchange medium circulation pipeline, the two ends of which are respectively connected to the heat exchange medium inlet and the heat exchange medium outlet of the evaporator heat exchanger, and the heat exchange medium in the heat exchange medium circulation pipeline exchanges heat with the refrigerant in the refrigerant circulation loop in the evaporator heat exchanger. The heat exchange medium circulation pipeline, from the outlet to the inlet, includes a first heat exchanger, a second heat exchanger, and a third heat exchanger connected in series. The first heat exchanger is used for a vehicle refrigerator, where the heat exchange medium in the circulation pipeline exchanges heat with the vehicle refrigerator. The second heat exchanger is used for the passenger compartment, where the heat exchange medium in the circulation pipeline exchanges heat with the passenger compartment. The third heat exchanger is used for the power battery, where the heat exchange medium in the circulation pipeline exchanges heat with the power battery.

2. The automotive thermal management system according to claim 1, characterized in that, The automotive thermal management system further includes regulating pipelines and regulating valve groups. The regulating pipelines include a first regulating pipeline and a second regulating pipeline. The first regulating pipeline connects the heat exchange medium inlet and the heat exchange medium outlet of the evaporator heat exchanger, and the second regulating pipeline connects the heat exchange medium inlet and the heat exchange medium outlet of the evaporator heat exchanger. The regulating valve groups are used to control the connection or disconnection of the first regulating pipeline and the second regulating pipeline, respectively.

3. The automotive thermal management system according to claim 2, characterized in that, The regulating valve group includes a first three-way valve, the inlet of which is connected to the heat exchange medium outlet of the first heat exchanger, one outlet of which is connected to the heat exchange medium inlet of the second heat exchanger, and the other outlet of which is connected to the first regulating pipeline and connected to the heat exchange medium inlet of the evaporating heat exchanger through the first regulating pipeline. The regulating valve group also includes a second three-way valve. The outlet of the second three-way valve is connected to the heat exchange medium inlet of the evaporative heat exchanger. One inlet of the second three-way valve is connected to the second regulating pipeline and is connected to the heat exchange medium outlet of the second heat exchanger through the second regulating pipeline. The other inlet of the second three-way valve is connected to the heat exchange medium outlet of the third heat exchanger.

4. The automotive thermal management system according to claim 2, characterized in that, The regulating pipeline also includes a third regulating pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger. The regulating valve group is also used to control the connection or disconnection of the third regulating pipeline.

5. The automotive thermal management system according to claim 4, characterized in that, The regulating valve group includes a third three-way valve. The inlet of the third three-way valve is connected to the heat exchange medium outlet of the evaporator heat exchanger, one outlet of the third three-way valve is connected to the heat exchange medium inlet of the first heat exchanger, and the other outlet of the third three-way valve is connected to the heat exchange medium inlet of the second heat exchanger.

6. The automotive thermal management system according to claim 4, characterized in that, The first heat exchanger includes a heat exchanger body and a cold storage device. The heat exchanger body and the cold storage device are connected in series. One of the heat exchanger body and the cold storage device is connected to the heat exchange medium inlet of the first heat exchanger, and the other is connected to the heat exchange medium outlet of the first heat exchanger. The regulating pipeline also includes a first return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the first heat exchanger. A liquid pump and a check valve are installed on the first return pipeline. The liquid pump on the first return pipeline is used to drive the heat exchange medium in the first return pipeline to flow from the heat exchange medium outlet of the first heat exchanger to the heat exchange medium inlet of the first heat exchanger.

7. The automotive thermal management system according to claim 2, characterized in that, The regulating pipeline also includes a second return pipeline, which connects the heat exchange medium outlet and the heat exchange medium inlet of the third heat exchanger, and the second return pipeline is equipped with a first throttle valve.

8. The automotive thermal management system according to any one of claims 1 to 7, characterized in that, There are two second heat exchangers, one for the front air conditioning unit in front of the passenger compartment and the other for the rear air conditioning unit in rear of the passenger compartment. The front and rear heat exchangers are connected in parallel. The heat exchange medium inlets of the front and rear heat exchangers are connected to the heat exchange medium outlet of the first heat exchanger. The heat exchange medium outlets of the front and rear heat exchangers are connected to the heat exchange medium inlet of the third heat exchanger.

9. The automotive thermal management system according to claim 8, characterized in that, A condensing heat exchanger is also provided on the refrigerant circulation loop. The refrigerant in the refrigerant circulation loop condenses and releases heat in the condensing heat exchanger. The heat exchange medium inlet of the downstream heat exchanger is also connected to the heat exchange medium outlet of the condensing heat exchanger, and the heat exchange medium outlet of the downstream heat exchanger is also connected to the heat exchange medium inlet of the condensing heat exchanger.

10. A car, characterized in that, The vehicle is equipped with a vehicle thermal management system as described in any one of claims 1 to 9.

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