Thermal management system, method and apparatus, vehicle, electronic device, and storage medium

Abstract

A thermal management system, comprising: a compressor (101), a first four-way valve (102), a heat exchange path (20), and a heat dissipation path (30). A first port of the first four-way valve is communicated with an outlet of the compressor; a second port of the first four-way valve is communicated with a first end of the heat dissipation path; a third port of the first four-way valve is communicated with a first end of the heat exchange path; a second end of the heat dissipation path is communicated with a second end of the heat exchange path; and a fourth port of the first four-way valve is communicated with an inlet of the compressor. Also provided are a thermal management method, a thermal management apparatus, a vehicle, an electronic device, a computer-readable storage medium, and a computer program product. In the thermal management system, by using a simple four-way valve as a fluid control valve, fluid flow direction switching is achieved, thereby reducing costs.

Description

Thermal management systems, methods, apparatus, vehicles, electronic devices, and storage media

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202410573365.7, filed on May 9, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of thermal management technology, and more particularly to a thermal management system, method, apparatus, vehicle, electronic device, and storage medium. Background Technology

[0004] As a fluid control valve in thermal management, an integrated valve integrates the different functions of multiple valves, allowing multiple valves to be controlled by a single control signal, thereby achieving multi-path distribution or control of fluid.

[0005] Because integrated valves combine multiple valves, they can provide various functions simultaneously, such as flow regulation, pressure control, and directional control. However, integrated valves are generally more expensive than individual valves. Summary of the Invention

[0006] This disclosure provides a thermal management system, method, apparatus, vehicle, electronic device, and storage medium.

[0007] According to a first aspect of this disclosure, a thermal management system is provided, comprising: a compressor, a first four-way valve, a heat exchange passage, and a heat dissipation passage; a first port of the first four-way valve is connected to the outlet of the compressor; a second port of the first four-way valve is connected to a first end of the heat dissipation passage; a third port of the first four-way valve is connected to the first end of the heat exchange passage; a second end of the heat dissipation passage is connected to the second end of the heat exchange passage; and a fourth port of the first four-way valve is connected to the inlet of the compressor.

[0008] Optionally, the system further includes an indoor condenser and a battery circuit; the outlet of the compressor is connected to the first end of the indoor condenser; the second end of the indoor condenser is connected to the first interface of the first four-way valve; and the heat exchangers on the heat exchange path are respectively connected to the second end of the heat dissipation path and the battery circuit for heat exchange.

[0009] Optionally, the heat exchange passage includes a first heat exchange passage, a second heat exchange passage, and a third heat exchange passage; the first end of the first heat exchange passage, the first end of the second heat exchange passage, and the first end of the third heat exchange passage are connected in parallel to the third port of the first four-way valve; a first expansion valve, a second expansion valve, and a first evaporator are provided on the first heat exchange passage, the first evaporator being disposed between the first expansion valve and the second expansion valve, and the first expansion valve being used to control the opening and closing of the first heat exchange passage; a third expansion valve and a heat exchanger are provided on the second heat exchange passage; and a fourth expansion valve and a second evaporator are provided on the third heat exchange passage.

[0010] Optionally, the system further includes: a second four-way valve and a motor circuit; a first end of a battery disposed on the battery circuit is connected to the heat exchanger, and the heat exchanger is connected to the first interface of the second four-way valve; a second interface of the second four-way valve is connected to the first end of the motor circuit; a second end of the motor circuit is connected to the first end of a low-temperature radiator, and a second end of the low-temperature radiator is connected to the third interface of the second four-way valve; a fourth interface of the second four-way valve is connected to the second end of the battery.

[0011] Optionally, the system further includes: a water-cooled condenser; the second end of the motor circuit is connected to the first end of the water-cooled condenser, and the first end of the water-cooled condenser is connected to the third interface of the second four-way valve; the second end of the water-cooled condenser is connected to the outlet of the compressor, and the first end of the water-cooled condenser is connected to the first end of the indoor condenser.

[0012] Optionally, a three-way valve is provided between the second end of the motor circuit and the first end of the water-cooled condenser; the first end of the three-way valve is connected to the second end of the motor circuit; the second end of the three-way valve is connected to the first end of the water-cooled condenser; and the third end of the three-way valve is connected to the second end of the water-cooled condenser.

[0013] According to a second aspect of this disclosure, a thermal management method is provided, the method being applied to the thermal management system of the first aspect, comprising: controlling the opening of two target interfaces of a first four-way valve in response to a thermal management control mode of the occupant compartment and / or battery.

[0014] Optionally, after controlling the two target interfaces of the first four-way valve to open, the method further includes: when the thermal management control mode is cooling mode, determining the first heat source of the passenger compartment, as well as the opening degree of the second expansion valve and the fourth expansion valve; and / or, determining the second heat source of the battery and the opening degree of the third expansion valve; or, when the thermal management control mode is heating mode, determining the first heat source of the passenger compartment and the second heat source of the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, in a preset correspondence between power demand and heat source; and respectively determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source.

[0015] Optionally, when the thermal management control mode is the heating mode, the two target interfaces of the first four-way valve include: the first interface and the third interface of the first four-way valve, and the second interface and the fourth interface of the first four-way valve; controlling the connection of the two target interfaces of the first four-way valve includes: controlling the first interface and the third interface of the first four-way valve to be connected, and the third interface of the first four-way valve to be connected to the first end of the heat exchange passage; controlling the first end of the heat dissipation passage to be connected to the second interface of the first four-way valve, and the second interface of the first four-way valve to be connected to the fourth interface of the first four-way valve; controlling the fourth interface of the first four-way valve to be connected to the inlet of the compressor.

[0016] Optionally, the heating mode includes a battery rapid heating mode, and the first power demand is zero; determining the first heat source of the passenger compartment and the second heat source of the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, within a preset correspondence between power demand and heat source, includes: determining that the second heat source is at least one of a water-cooled condenser, a heat exchanger installed on the heat exchange path, and waste heat from a motor installed on the heat exchange path; determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source respectively includes: determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

[0017] Optionally, after determining the opening degree of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery, the method further includes: performing thermal management control on the battery based on the second heat source and the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve.

[0018] Optionally, the heating mode includes a battery and passenger compartment heating mode, and the first required power is greater than the second required power; determining the first heating source of the passenger compartment and the second heating source of the battery based on the relationship between the first required power of the passenger compartment and the second required power of the battery in a preset correspondence between required power and heating source includes: determining that the second heating source is at least one of the heat exchanger and the motor waste heat, and determining that the first heating source is the water-cooled condenser; determining the opening degree of the second expansion valve, the opening degree of the third expansion valve and / or the opening degree of the fourth expansion valve corresponding to the first heating source and the second heating source respectively includes: determining the opening degree of the second expansion valve, the opening degree of the third expansion valve and the opening degree of the fourth expansion valve based on the relationship between the first required power of the passenger compartment and the second required power of the battery.

[0019] Optionally, after determining the opening degree of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the method further includes: performing thermal management control on the battery based on the second heat source, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve; and performing thermal management control on the passenger compartment based on the first heat source and the opening degree of the second expansion valve.

[0020] Optionally, the heating mode includes a battery and passenger compartment heating mode, and the first required power is less than or equal to the second required power; the second heat source is determined to be at least one of a water-cooled condenser, a heat exchanger, and waste heat from the motor, and the first heat source is determined to be the water-cooled condenser; determining the opening degree of the second expansion valve, the third expansion valve, and / or the fourth expansion valve corresponding to the first heat source and the second heat source respectively includes: determining the opening degree of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first required power of the passenger compartment and the second required power of the battery.

[0021] Optionally, after determining the opening degree of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the method further includes: performing thermal management control on the battery based on the second heat source, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve; and performing thermal management control on the passenger compartment based on the first heat source and the opening degree of the second expansion valve.

[0022] Optionally, after controlling the two target interfaces of the first four-way valve to be connected, the method further includes: controlling the first interface of the second four-way valve to be connected to the second end of the battery via the fourth interface of the second four-way valve; controlling the second end of the motor circuit to be connected to the third interface of the second four-way valve, and the third interface of the second four-way valve to be connected to the second interface of the second four-way valve; and controlling the second interface of the second four-way valve to be connected to the first end of the motor circuit.

[0023] Optionally, when the thermal management control mode is cooling mode, the two target interfaces of the first four-way valve include the first interface and the second interface of the first four-way valve, and the third interface and the fourth interface of the first four-way valve; controlling the connection of the two target interfaces of the first four-way valve includes: controlling the first interface of the first four-way valve to connect with the second interface of the first four-way valve, and the second interface of the first four-way valve to connect with the first end of the heat dissipation passage; controlling the first end of the heat exchange passage to connect with the third interface of the first four-way valve, and the third interface of the first four-way valve to connect with the fourth interface of the first four-way valve; controlling the fourth interface of the first four-way valve to connect with the inlet of the compressor.

[0024] Optionally, after determining the first heat source of the passenger compartment, the opening degree of the second expansion valve, and the opening degree of the fourth expansion valve; and / or, after determining the second heat source of the battery and the opening degree of the third expansion valve, the method further includes: performing thermal management control on the passenger compartment based on the first heat source, the opening degree of the second expansion valve, and the opening degree of the fourth expansion valve; and / or, performing thermal management control on the battery based on the second heat source and the opening degree of the third expansion valve. Optionally, after controlling the connection of the two target interfaces of the first four-way valve, the method further includes: controlling the first interface of the second four-way valve to connect with the second interface of the second four-way valve, and the second interface of the second four-way valve to connect with the first end of the motor circuit; controlling the second end of the motor circuit to connect with the third interface of the second four-way valve, and the third interface of the second four-way valve to connect with the fourth interface of the second four-way valve; and controlling the fourth interface of the second four-way valve to connect with the second end of the battery.

[0025] According to a third aspect of this disclosure, a thermal management device is provided, the device being applied to a thermal management system according to any one of the first aspects, comprising: a first control unit for controlling the opening of two target interfaces of a first four-way valve in response to a thermal management control mode of the occupant compartment and / or battery.

[0026] Optionally, it further includes: a first determining unit, configured to, after controlling the connection of the two target interfaces of the first four-way valve, when the thermal management control mode is cooling mode, determine the first heat source of the passenger compartment, and the opening degree of the second expansion valve and the fourth expansion valve; and / or, determine the second heat source of the battery and the opening degree of the third expansion valve; a second determining unit, configured to, when the thermal management control mode is heating mode, determine the first heat source of the passenger compartment and the second heat source of the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, in a preset correspondence between power demand and heat source; a third determining unit, configured to determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source, respectively.

[0027] Optionally, when the thermal management control mode is the heating mode, the two target interfaces of the first four-way valve include: the first interface of the first four-way valve and the third interface of the first four-way valve, and the second interface of the first four-way valve and the fourth interface of the first four-way valve; the first control unit is further configured to: control the first interface of the first four-way valve to connect with the third interface of the first four-way valve, and the third interface of the first four-way valve to connect with the first end of the heat exchange passage; control the first end of the heat dissipation passage to connect with the second interface of the first four-way valve, and the second interface of the first four-way valve to connect with the fourth interface of the first four-way valve; control the fourth interface of the first four-way valve to connect with the inlet of the compressor.

[0028] Optionally, the heating mode includes a battery rapid heating mode, and the first power demand is zero; the second determining unit is further configured to: determine that the second heat source is at least one of a water-cooled condenser, a heat exchanger provided on the heat exchange path, and waste heat from a motor provided on the heat exchange path; the third determining unit is further configured to: determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

[0029] Optionally, it further includes: a second control unit, configured to, after determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery, perform thermal management control on the battery based on the second heat source and the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve.

[0030] Optionally, the heating mode includes a battery and passenger compartment heating mode, and the first required power is greater than the second required power; the second determining unit is further configured to: determine that the second heat source is at least one of the heat exchanger and the motor waste heat, and determine that the first heat source is the water-cooled condenser; the third determining unit is further configured to: determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve according to the relationship between the first required power of the passenger compartment and the second required power of the battery.

[0031] Optionally, the second control unit is further configured to: after determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery, perform thermal management control on the battery based on the second heat source, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve; and perform thermal management control on the occupant compartment based on the first heat source and the opening degree of the second expansion valve.

[0032] Optionally, the heating mode includes a battery and passenger compartment heating mode, and the first required power is less than or equal to the second required power; the second determining unit is further configured to: determine that the second heat source is at least one of a water-cooled condenser, a heat exchanger, and waste heat from a motor, and determine that the first heat source is the water-cooled condenser; the third determining unit is further configured to: determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first required power of the passenger compartment and the second required power of the battery.

[0033] Optionally, the second control unit is further configured to: after determining the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, perform thermal management control on the battery based on the second heat source, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve; and perform thermal management control on the passenger compartment based on the first heat source and the opening degree of the second expansion valve.

[0034] Optionally, the device further includes: a third control unit, configured to, after controlling the two target interfaces of the first four-way valve to be connected, control the first interface of the second four-way valve to be connected to the second terminal of the battery via the fourth interface of the second four-way valve; control the second terminal of the motor circuit to be connected to the third interface of the second four-way valve, and the third interface of the second four-way valve to be connected to the second interface of the second four-way valve; and control the second interface of the second four-way valve to be connected to the first terminal of the motor circuit.

[0035] Optionally, when the thermal management control mode is a cooling mode, the two target interfaces of the first four-way valve include the first interface and the second interface of the first four-way valve, and the third interface and the fourth interface of the first four-way valve; the first control unit is further configured to: control the first interface of the first four-way valve to connect with the second interface of the first four-way valve, and the second interface of the first four-way valve to connect with the first end of the heat dissipation passage; control the first end of the heat exchange passage to connect with the third interface of the first four-way valve, and the third interface of the first four-way valve to connect with the fourth interface of the first four-way valve; control the fourth interface of the first four-way valve to connect with the inlet of the compressor.

[0036] Optionally, the second control unit is further configured to: after determining the first heat source of the passenger compartment, the opening degree of the second expansion valve, and the opening degree of the fourth expansion valve; and / or, after determining the second heat source of the battery and the opening degree of the third expansion valve, perform thermal management control on the passenger compartment based on the opening degree of the first heat source, the second expansion valve, and the fourth expansion valve; and / or, perform thermal management control on the battery based on the second heat source and the opening degree of the third expansion valve.

[0037] Optionally, the device further includes a fourth control unit, configured to: after controlling the two target interfaces of the first four-way valve to be connected, control the first interface of the second four-way valve to be connected to the second interface of the second four-way valve, and connect the second interface of the second four-way valve to the first end of the motor circuit; control the second end of the motor circuit to be connected to the third interface of the second four-way valve, and connect the third interface of the second four-way valve to the fourth interface of the second four-way valve; and control the fourth interface of the second four-way valve to be connected to the second end of the battery.

[0038] According to a fourth aspect of this disclosure, a vehicle is provided that includes the thermal management apparatus described in the third aspect.

[0039] According to a fifth aspect of this disclosure, an electronic device is provided, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0040] According to a sixth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0041] According to a seventh aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0042] The thermal management system, method, apparatus, vehicle, electronic device, and storage medium disclosed herein mainly include the following technical solutions: a compressor, a first four-way valve, a heat exchange passage, and a heat dissipation passage; a first port of the first four-way valve is connected to the outlet of the compressor; a second port of the first four-way valve is connected to the first end of the heat dissipation passage; a third port of the first four-way valve is connected to the first end of the heat exchange passage; a second end of the heat dissipation passage is connected to the second end of the heat exchange passage; and a fourth port of the first four-way valve is connected to the inlet of the compressor. Compared with related technologies, the embodiments of this application, by using a four-way valve as the fluid control valve in the thermal management system, realize the switching of fluid flow direction in the thermal management system, eliminating the need for a more expensive integrated valve, reducing the cost of the thermal management system, and the simple structure of the four-way valve results in a lower failure rate, reducing maintenance costs.

[0043] It should be understood that the content described in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0044] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0045] Figure 1 is a schematic diagram of a thermal management system provided in an embodiment of this disclosure;

[0046] Figure 2 is a schematic diagram of another thermal management system provided in an embodiment of this disclosure;

[0047] Figure 3 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure;

[0048] Figure 4 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure;

[0049] Figure 5 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure;

[0050] Figure 6 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure;

[0051] Figure 7 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure;

[0052] Figure 8 is a schematic diagram of a thermal management device provided in an embodiment of this disclosure;

[0053] Figure 9 is a schematic diagram of a thermal management device provided in an embodiment of this disclosure;

[0054] Figure 10 is a schematic block diagram of an example electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0055] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0056] The following description, with reference to the accompanying drawings, describes a thermal management system, method, apparatus, vehicle, electronic device, and storage medium according to embodiments of the present disclosure.

[0057] Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of a thermal management system provided in an embodiment of this application, and Figure 2 is a schematic diagram of another thermal management system provided in an embodiment of this application; including: compressor 101, first four-way valve 102, heat exchange passage 20, and heat dissipation passage 30;

[0058] The first port of the first four-way valve 102 is connected to the outlet of the compressor 101;

[0059] The second port of the first four-way valve 102 is connected to the first end of the heat dissipation passage 30;

[0060] The third port of the first four-way valve 102 is connected to the first end of the heat exchange passage 20; the second end of the heat dissipation passage 30 is connected to the second end of the heat exchange passage 20.

[0061] The fourth port of the first four-way valve 102 is connected to the inlet of the compressor 101.

[0062] The first four-way valve 102 can control the connection of its different interfaces by controlling its internal conduction relationship. Specifically, the connection is determined according to the vehicle's thermal management control mode type to meet different thermal management control modes. The heat exchange passage 20 is used to transfer heat from the refrigerant in the thermal management circuit to the passenger compartment and / or battery. The heat dissipation passage 30 is used to dissipate heat from the refrigerant in the thermal management circuit to the environment or absorb heat from the environment. The specific operating conditions vary depending on the thermal management control mode. For example, when the thermal management control mode is heating, the heat dissipation passage 30 absorbs heat from the environment to increase the refrigerant temperature in the thermal management circuit; when the thermal management control mode is cooling, the heat dissipation passage 30 dissipates heat from the refrigerant in the thermal management circuit to the environment to decrease the refrigerant temperature in the thermal management circuit.

[0063] The compressor 101 operates under different thermal management control modes. For example, in heating mode, it compresses the refrigerant into a high-temperature and high-pressure state to dissipate heat in the heat dissipation circuit 20, thereby heating the crew compartment and / or battery. In cooling mode, it compresses the refrigerant into a high-temperature and high-pressure gaseous state to liquefy and absorb heat in the heat dissipation circuit 20, thereby cooling the crew compartment and / or battery.

[0064] The thermal management system disclosed herein mainly includes: a compressor 101, a first four-way valve 102, a heat exchange passage 20, and a heat dissipation passage 30; the first port of the first four-way valve 102 is connected to the outlet of the compressor 101; the second port of the first four-way valve 102 is connected to the first end of the heat dissipation passage 30; the third port of the first four-way valve 102 is connected to the first end of the heat exchange passage 20; the second end of the heat dissipation passage 30 is connected to the second end of the heat exchange passage 20; and the fourth port of the first four-way valve 102 is connected to the inlet of the compressor 101. Compared with related technologies, this application embodiment uses a four-way valve as the fluid control valve in the thermal management system to achieve fluid flow direction switching in the thermal management system, eliminating the need for a costly integrated valve, reducing the cost of the thermal management system, and the simple structure of the four-way valve results in a lower failure rate, reducing maintenance costs.

[0065] In one possible implementation of this application embodiment, please continue to refer to FIG1 and FIG2, the system further includes an indoor condenser 103 and a battery circuit 104;

[0066] The outlet of the compressor 101 is connected to the first end of the indoor condenser 103;

[0067] The second end of the indoor condenser 103 is connected to the first interface of the first four-way valve 102;

[0068] The heat exchanger 201 on the heat exchange passage 20 is connected to the second end of the heat dissipation passage 30 and the battery circuit 104 for heat exchange.

[0069] The indoor condenser 103 is arranged between the compressor 101 and the first port of the first four-way valve 102 for the initial heat exchange of the passenger compartment. The radiator 201 is connected to both the heat exchange passage 20 and the battery circuit 104, and is used to perform heat exchange between the heat exchange passage 20 and the battery circuit 104. For example, in heating mode, heat is transferred from the heat exchange passage 20 to the battery circuit 104 to heat the battery; in cooling mode, heat is transferred from the battery circuit 104 to the heat exchange passage 20 to cool the battery.

[0070] The heat exchange passage 20 is connected to the heat dissipation passage 30 so that the refrigerant with a lower temperature after heating flows through the heat dissipation passage 30 as soon as possible and absorbs heat through the outdoor condenser 301 arranged on the heat dissipation passage 30; or, after the outdoor condenser 301 arranged on the heat dissipation passage 30 cools down, the refrigerant with a lower temperature flows through the heat exchange passage 20 as soon as possible to perform cooling of the crew compartment and / or battery.

[0071] In one possible implementation of this disclosure, please continue to refer to FIG1 and FIG2, the heat exchange passage 20 includes a first heat exchange passage 202, a second heat exchange passage 203 and a third heat exchange passage 204;

[0072] The first end of the first heat exchange passage 202, the first end of the second heat exchange passage 203, and the first end of the third heat exchange passage 204 are connected in parallel with the third interface of the first four-way valve 102.

[0073] The first heat exchange passage 202 is provided with a first expansion valve 2021, a second expansion valve 2022 and a first evaporator 2023. The first evaporator 2023 is disposed between the first expansion valve 2021 and the second expansion valve 2022. The first expansion valve 2021 is used to control the opening and closing of the first heat exchange passage 202.

[0074] A third expansion valve 2031 and a heat exchanger 201 are provided on the second heat exchange passage 203;

[0075] The third heat exchange passage 204 is equipped with a fourth expansion valve 2041 and a second evaporator 2042.

[0076] In one possible implementation of this application embodiment, the first heat exchange passage 202 performs thermal management of the passenger compartment based on the first evaporator 2023, and the third heat exchange passage 204 performs thermal management of the passenger compartment based on the second evaporator 2042. In practical applications, the first evaporator 2023 and the second evaporator 2042 can be used simultaneously for thermal management, or one of them can be selected for thermal management, depending on the thermal management requirements of the passenger compartment. The second heat exchange passage 203 is used for thermal management of the battery; the first heat exchange passage 202 controls the refrigerant flow rate and the opening and closing of the passage through the second expansion valve 2022, the second heat exchange passage 203 controls the refrigerant flow rate and the opening and closing of the passage through the third expansion valve 2031, and the third heat exchange passage 204 controls the refrigerant flow rate and the opening and closing of the passage through the fourth expansion valve 2041; for example, when there is no need for thermal management in the passenger compartment, the second expansion valve 2022 and the fourth expansion valve 2041 are closed, and thermal management of the battery is only performed through the second heat exchange passage 203; when there is no need for thermal management of the battery, the third expansion valve 2031 is closed, and thermal management of the passenger compartment is only performed through the first heat exchange passage 202 and / or the third heat exchange passage 204.

[0077] In one possible implementation of this disclosure, please continue to refer to FIG1 and FIG2, the system further includes: a second four-way valve 103 and a motor circuit 104;

[0078] The first end of the battery 1041 provided on the battery circuit 104 is connected to the heat exchanger 201, and the heat exchanger 201 is connected to the first end of the second four-way valve 103.

[0079] The second end of the second four-way valve 103 is connected to the first end of the motor circuit 105;

[0080] The second end of the battery circuit 104 is connected to the first end of the low-temperature radiator 106, and the second end of the low-temperature radiator 106 is connected to the third end of the second four-way valve 103.

[0081] The fourth end of the second four-way valve 103 is connected to the second end of the battery 1041.

[0082] The second four-way valve 103 is used to control the connection between the battery circuit 104 and the motor circuit 105 under different thermal management control modes. In the heating mode, the waste heat generated in the motor circuit 105 can heat the battery. In the cooling mode, the preheating generated in the motor circuit 105 will have a negative impact on the thermal management of the battery. Therefore, the second four-way valve 103 controls the on / off connection between the battery circuit 104 and the motor circuit 105 under different thermal management conditions.

[0083] A motor is connected to the battery circuit 104. The motor has no heating requirement, only a cooling requirement. The heat in the refrigerant is dissipated to the environment through the low-temperature radiator 106.

[0084] In one possible implementation of this disclosure, please continue to refer to FIG1 and FIG2, the system further includes: a water-cooled condenser 107;

[0085] The second end of the motor circuit 104 is connected to the first end of the water-cooled condenser 107, and the first end of the water-cooled condenser 107 is connected to the third end of the second four-way valve 103.

[0086] The second end of the water-cooled condenser 107 is connected to the outlet of the compressor 101, and the first end of the water-cooled condenser 107 is connected to the first end of the indoor condenser 103.

[0087] The outlet of the motor circuit 104 and the compressor 101 exchange heat through the water-cooled condenser 107. Since the residual heat of the motor in the motor circuit will affect the cooling effect of the thermal management circuit, the water-cooled condenser 107 does not work when the vehicle thermal management control mode is cooling, that is, it does not exchange heat. The water-cooled condenser 107 only works when the thermal management control mode is heating, depending on the thermal demand of the passenger compartment and the battery.

[0088] In one possible implementation of this disclosure, please continue to refer to Figures 1 and 2. A three-way valve 108 is provided between the second end of the motor circuit 104 and the first end of the water-cooled condenser 107.

[0089] The first end of the three-way valve 108 is connected to the second end of the motor circuit 105;

[0090] The second end of the three-way valve 108 is connected to the first end of the water-cooled condenser 107;

[0091] The third end of the three-way valve 108 is connected to the second end of the water-cooled condenser 107.

[0092] In some embodiments, the flow of refrigerant through the water-cooled condenser 107 can be controlled by controlling the internal on / off state of the three-way valve 108. When the water-cooled condenser is determined to be not working according to the vehicle thermal management control mode, the first and third ends of the three-way valve 108 are controlled to be open; when the water-cooled condenser is determined to be working according to the vehicle thermal management control mode, the first and second ends of the three-way valve 108 are controlled to be open.

[0093] Figure 3 is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure. As shown in Figure 3, the method includes the following steps:

[0094] Step 401, in response to the thermal management control mode of the crew compartment and / or battery, control the opening of two target interfaces of the first four-way valve.

[0095] In some embodiments, the thermal management control mode of the passenger compartment includes maintaining a comfortable temperature and humidity to prevent frost and fogging; the thermal management control mode of the power battery includes maintaining an appropriate temperature range to ensure battery performance and lifespan.

[0096] In some embodiments, the connection relationships of some components in the thermal management system differ depending on the thermal management control mode. For example, in heating mode, the outdoor radiator absorbs heat from the environment, while in cooling mode, it dissipates heat to the environment. Therefore, the connection relationships of the thermal management system differ between heating and cooling modes. After determining whether the vehicle's thermal management control mode is heating or cooling, the connection sequence of the two target interfaces of the first four-way valve is controlled according to the determined thermal management control mode to respond to the thermal management control mode of the passenger compartment and / or battery.

[0097] The thermal management method disclosed herein controls the opening of two target interfaces of a first four-way valve in response to the thermal management control mode of the crew compartment and / or battery. Compared with related technologies, the embodiments of this application, by using a four-way valve as the fluid control valve in the thermal management system, realize the switching of fluid flow direction in the thermal management system, eliminating the need for a costly integrated valve, reducing the cost of the thermal management system, and the simple structure of the four-way valve results in a lower failure rate and reduced maintenance costs.

[0098] In some embodiments, after controlling the opening of the two target interfaces of the first four-way valve, the method further includes:

[0099] When the thermal management control mode is cooling mode, determine the first heat source of the passenger compartment, the opening degree of the second expansion valve and the opening degree of the fourth expansion valve; and / or, determine the second heat source of the battery and the opening degree of the third expansion valve.

[0100] Alternatively, when the thermal management control mode is the heating mode, the first heating source of the passenger compartment and the second heating source of the battery are determined according to the relationship between the first power demand of the passenger compartment and the second power demand of the battery, based on the preset correspondence between the power demand and the heat source.

[0101] The opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source are determined respectively.

[0102] In the embodiments of this application, the opening degree of the first heat source and the second expansion valve and the fourth expansion valve in the cooling mode, and the opening degree of the second heat source and the third expansion valve in the heating mode, are all preset in advance.

[0103] The following examples illustrate different thermal management control modes:

[0104] When the thermal management control mode is the heating mode, the two target interfaces of the first four-way valve 102 include: the first interface of the first four-way valve 102 and the third interface of the first four-way valve 102, and the second interface of the first four-way valve 102 and the fourth interface of the first four-way valve 102.

[0105] In some embodiments, please continue to refer to FIG1. ​​As shown in FIG1, the first port of the first four-way valve 102 is the port numbered 1 in FIG1; the second port of the first four-way valve 102 is the port numbered 2 in FIG1; the third port of the first four-way valve 102 is the port numbered 3 in FIG1; and the fourth port of the first four-way valve 102 is the port numbered 4 in FIG1.

[0106] The two target interfaces for controlling the opening of the first four-way valve 102 include:

[0107] The first port of the first four-way valve 102 is connected to the third port of the first four-way valve 102, and the third port of the first four-way valve 102 is connected to the first end of the heat exchange passage 20.

[0108] The first end of the heat dissipation passage 30 is connected to the second interface of the first four-way valve 102, and the second interface of the first four-way valve 102 is connected to the fourth interface of the first four-way valve 102.

[0109] The fourth port of the first four-way valve 102 is connected to the inlet of the compressor 101.

[0110] When the thermal management control mode of the crew compartment and battery is in heating mode, through the internal conduction relationship of the first four-way valve 102 in the thermal management system (please continue to refer to Figure 1), the first port of the first four-way valve 102 is connected to the third port, and the second port of the first four-way valve 102 is connected to the fourth port. The outdoor condenser connected through the second port of the first four-way valve 102 absorbs heat from the environment and flows sequentially through the second port of the first four-way valve 102, the fourth port of the first four-way valve 102, the compressor 101, the first port of the first four-way valve 102, and the third port of the first four-way valve 102 to the heat exchange passage 20, providing heat to the evaporator and heat exchanger connected on the heat exchange passage 20, thereby achieving heating for the crew compartment and battery.

[0111] In some embodiments, both the passenger compartment and the battery in the vehicle require thermal management and use the same thermal management circuit. Therefore, balancing the thermal management control modes of the passenger compartment and the battery is a problem worth studying. Please refer to Figure 4, which is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure. This method is applied to a heating mode including a rapid battery heating mode, and the first power demand is zero, including:

[0112] Step 501: Determine that the second heat source is at least one of the following: a water-cooled condenser, a heat exchanger installed on the heat exchange path, and waste heat from the motor installed on the heat exchange path.

[0113] In some embodiments, the thermal management control mode of the passenger compartment and the power battery is affected by the ambient temperature. Under extreme temperature conditions, the passenger compartment requires greater cooling or heating power to maintain a comfortable temperature. Simultaneously, the battery exhibits different performance characteristics at different operating temperatures; therefore, the power requirements of the cooling or heating system need to be determined based on the battery's operating temperature range. At high temperatures, more cooling power is required to prevent battery overheating, while at low temperatures, a heating system is needed to raise the battery's operating temperature.

[0114] Therefore, in response to the influence of external temperature and battery operating temperature, the thermal management control mode and power requirements of the passenger compartment and power battery will change with the change of external ambient temperature, and need to be dynamically adjusted according to the actual temperature and the target temperature. The specific power requirements of the passenger compartment and power battery are not limited in this embodiment.

[0115] In some cases, the passenger compartment does not require additional thermal management, such as in cold or extremely cold weather when it is necessary to heat the power battery with all efforts. In this case, all the heat in the thermal management circuit can be used to thermally manage the battery.

[0116] Step 502: Determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery.

[0117] In some embodiments, the difference between the first required power and the second required power represents the difference in the required power of the passenger compartment and the battery, and therefore the different focuses in thermal management. The difference in the required power of the passenger compartment and the battery can be achieved by allocating different heat sources to the passenger compartment and the battery respectively, for example, allocating a first heat source and a second heat source with different heating power or different numbers of first heat sources and second heat sources.

[0118] In some embodiments, the preset correspondence between the required power and the heat source is pre-configured, and the specific settings can be based on historical experience or experimental results. This application embodiment does not limit this.

[0119] In this step, the first required power is zero, that is, when the required power of the crew cabin is 0, it means that the thermal management weighing is heating the battery at this time, so the heat source of the battery is determined to be the entire heat source.

[0120] For example, when the vehicle is being charged, there is no heating request in the passenger compartment (HP OFF); when the charging gun is connected (the battery has a charging heating request): the system switches to single-battery heating mode, the electronic water pump 2 starts, and the ERV3 opens to a certain degree. The specific opening value is controlled by looking up the optimal exhaust pressure corresponding to the ambient temperature. The compressor 101 speed control target is the battery water inlet temperature value, specifically the highest cell temperature + 5°C. All high-temperature refrigerant enters the chiller to heat the battery. When the cell temperature > 30°C, the battery charging heating request stops, and the system exits this mode. It should be noted that this description is only an example and is not intended to limit specific modes or values. This application embodiment does not limit these aspects.

[0121] Step 503: Perform thermal management control on the battery based on the opening degree of the second heat source, the second expansion valve, the third expansion valve, and the fourth expansion valve.

[0122] Based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the valve opening in the thermal management circuit can be determined, thereby controlling the distribution of thermal management power between the passenger compartment and the power battery, i.e., determining the opening of the second expansion valve, the opening of the third expansion valve, and the opening of the fourth expansion valve.

[0123] In some embodiments, the relationship between the first power requirement of the passenger compartment and the second power requirement of the battery is pre-configured with the valve opening in the thermal management circuit. The specific setting can be based on historical experience or experimental results, and this application embodiment does not limit this.

[0124] Synchronous control of the heat source and valve opening can achieve thermal management of the battery, providing a suitable operating temperature for the battery and ensuring stable operation within the required temperature range.

[0125] Please refer to Figure 5, which is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure. This method is applied to heating modes including battery and passenger compartment heating modes, and the first required power is greater than the second required power, including:

[0126] Step 601: Determine that the second heat source is at least one of the heat exchanger and the waste heat from the motor, and determine that the first heat source is the water-cooled condenser.

[0127] In some embodiments, when the first power demand is greater than the second power demand, thermal management focuses on heating the passenger compartment. In this case, the second heat source does not include a water-cooled condenser; that is, the water-cooled condenser is not operating. After the refrigerant flows through the indoor condenser 103, the higher-temperature refrigerant can preferentially heat the passenger compartment. The battery also has some thermal management needs at this time, so waste heat from the motor and the heat exchanger are used to heat the battery. When the vehicle is parked, there is no waste heat from the motor, so the heat generated by the stalled motor is used to heat the battery.

[0128] Thermal management focuses on heating the passenger compartment. At this time, the secondary heat source is determined to be the sole heat source, including the water-cooled condenser, heat exchanger, and waste heat from the motor. The water-cooled condenser is in operation, and the refrigerant undergoes the first heat exchange in the water-cooled condenser to heat the battery and then the passenger compartment.

[0129] Step 602: Determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery.

[0130] Based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the valve opening in the thermal management circuit can be determined, thereby controlling the distribution of thermal management power between the passenger compartment and the power battery.

[0131] Step 603: Perform thermal management control on the battery according to the opening degree of the second heat source, the third expansion valve, and the fourth expansion valve; and perform thermal management control on the passenger compartment according to the opening degree of the first heat source and the second expansion valve.

[0132] Based on the relationship between the primary power demand of the passenger compartment and the secondary power demand of the battery, the valve opening in the thermal management circuit can be determined to control the distribution of thermal management power between the passenger compartment and the power battery. For example, if the passenger compartment has a higher power demand, the opening of the second and fourth expansion valves can be increased to prioritize providing heat to the passenger compartment, ensuring that residual heat provides comfort within the passenger compartment.

[0133] For example, when the passenger compartment has a heating request (HP ON); the battery SOC is below 20%, the battery has a heating request (cell temperature ≤ 0℃), and the charging gun is not connected (battery has no charging request): the system switches to passenger compartment heating and vehicle battery end heating mode. The third expansion valve opens to a certain degree, the specific opening value of which is controlled by the battery inlet water temperature. Some high-temperature refrigerant enters the heat exchanger to heat the battery. In this mode, the passenger compartment is the main heating load, and the third expansion valve controls the target battery inlet water temperature to be the highest cell temperature + 1℃. When the cell temperature > 0℃, the battery end heating request stops, and the system exits this mode. It should be noted that this description is only an example and is not intended to limit specific values. This application embodiment does not limit these values.

[0134] The system dynamically adjusts heat distribution according to different needs, thereby achieving effective heat management of the passenger compartment and power battery. This helps improve energy efficiency, extends the life of the power battery, and enhances the overall performance and comfort of the vehicle.

[0135] Please refer to Figure 6, which is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure. This method is applied to heating modes including battery and passenger compartment heating modes, and the first required power is less than or equal to the second required power, including:

[0136] Step 701: Determine that the second heat source is at least one of a water-cooled condenser, a heat exchanger, and waste heat from a motor, and determine that the first heat source is the water-cooled condenser.

[0137] Specifically, if the battery's power requirement is relatively high, while the passenger cabin's power requirement is relatively low, then the battery's power requirement will be prioritized, and vice versa.

[0138] In some embodiments, when the first power demand is less than or equal to the second power demand, the focus of thermal management is on heating the battery. In this case, the second heat source includes three heat sources: a water-cooled condenser, a heat exchanger, and waste heat from the motor. Since the passenger compartment also has some thermal management needs, a water-cooled condenser is used to heat the passenger compartment.

[0139] Step 702: Determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery.

[0140] Based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the valve opening in the thermal management circuit can be determined, thereby controlling the distribution of thermal management power between the passenger compartment and the power battery.

[0141] Step 703: Perform thermal management control on the battery according to the opening degree of the second heat source, the third expansion valve, and the fourth expansion valve; and perform thermal management control on the passenger compartment according to the opening degree of the first heat source and the second expansion valve.

[0142] For example, when the passenger compartment requests heating (HP ON) and the charging gun is connected (when the battery requests charging and heating): the system switches to passenger compartment heating and battery heating mode, the air conditioning unit switches to pure internal circulation mode, and the third expansion valve opens to a certain degree. The specific opening value is controlled by the battery inlet water temperature and the power demand of the passenger compartment and the power battery. For example, if the first power demand of the passenger compartment and the power battery is 1:9 with the second power demand of the battery, then the opening of the third expansion valve ERV3 is controlled to be 0.9. Some high-temperature refrigerant enters the heat exchanger to heat the battery. In this mode, the battery is the main heating load, and the target battery inlet water temperature controlled by the third expansion valve is the battery's highest temperature + 3°C. When the battery temperature is > 30°C, the battery charging and heating request stops, and the system exits this mode. It should be noted that this description is only an example and is not intended to limit specific values. This application embodiment does not limit these values.

[0143] The system dynamically adjusts heat distribution according to different needs, thereby achieving effective heat management of the passenger compartment and power battery. This helps improve energy efficiency, extends the life of the power battery, and enhances the overall performance and comfort of the vehicle.

[0144] In some embodiments, the connection relationship of the second four-way valve varies depending on the thermal management requirements. In heating mode, after controlling the opening of the two target interfaces of the first four-way valve 102, the following is included:

[0145] The first interface of the second four-way valve is connected to the second end of the battery via the fourth interface of the second four-way valve;

[0146] The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the second interface of the second four-way valve.

[0147] The second port of the second four-way valve is connected to the first end of the motor circuit.

[0148] Please refer to Figures 1 and 2. The first and third ports of the second four-way valve are connected to the first and second ports of the battery circuit, respectively. The second and fourth ports of the second four-way valve are connected to the first and second ports of the motor circuit, respectively. By controlling the internal connections of the second four-way valve, the connection or disconnection between the battery circuit and the motor circuit can be controlled. Specifically, the internal connections of the second four-way valve are determined according to the thermal management requirements. For example, in heating mode, the waste heat from the motor in the motor circuit can heat the battery circuit. Therefore, in heating mode, controlling the internal connections of the second four-way valve connects the battery circuit and the motor circuit to heat the battery circuit. In cooling mode, the waste heat from the motor in the motor circuit affects the cooling effect of the battery circuit. Therefore, in cooling mode, controlling the internal connections of the second four-way valve disconnects the battery circuit and the motor circuit.

[0149] In some embodiments, when the thermal management control mode is a cooling mode, the two target interfaces of the first four-way valve 102 include the first interface of the first four-way valve 102 and the second interface of the first four-way valve 102, as well as the third interface of the first four-way valve 102 and the fourth interface of the first four-way valve 102.

[0150] The first interface of the first four-way valve 102 is connected to the second interface of the first four-way valve 102, and the second interface of the first four-way valve 102 is connected to the first end of the heat dissipation passage 30.

[0151] The first end of the heat exchange passage 20 is connected to the third port of the first four-way valve 102, and the third port of the first four-way valve 102 is connected to the fourth port of the first four-way valve 102.

[0152] The fourth port of the first four-way valve 102 is connected to the inlet of the compressor 101.

[0153] Please refer to Figure 2. When the thermal management control mode is cooling, the first and second ports of the first four-way valve 102 are connected, and the third and fourth ports are connected, through the internal conduction relationship of the first four-way valve 102 in the thermal management system. The outdoor condenser, connected through the second port of the first four-way valve 102, dissipates heat from the environment, sequentially through the heat exchange passage 20, the fourth port of the first four-way valve 102, the third port of the first four-way valve 102, the compressor 101, the first port of the first four-way valve 102, and the third port of the first four-way valve 102, completing the refrigerant circulation. The evaporator and heat exchanger connected on the heat exchange passage 20 absorb heat from the passenger compartment and / or the battery, achieving cooling of the passenger compartment and / or the battery.

[0154] Please refer to Figure 7, which is a schematic flowchart of a thermal management method provided in an embodiment of this disclosure. The method is applied to a cooling mode and includes:

[0155] Step 801: Determine the first heat dissipation source of the passenger compartment, the opening degree of the second expansion valve and the opening degree of the fourth expansion valve; and / or, determine the second heat dissipation source of the battery and the opening degree of the third expansion valve.

[0156] Since the motor in the motor circuit can only generate waste heat, it can only serve as a heat source during heating operations, not a heat dissipation source. By controlling the internal conduction of the second four-way valve, the motor circuit is disconnected from the battery circuit, thus providing better cooling for the battery circuit.

[0157] Step 802: Perform thermal management control on the passenger compartment based on the opening degree of the first heat source, the second expansion valve, and the fourth expansion valve; and / or, perform thermal management control on the battery based on the opening degree of the second heat source and the third expansion valve.

[0158] In one possible implementation of this application embodiment, the valve opening is used to control the refrigerant flow rate in the thermal management circuit to the passenger compartment and / or battery; thermal management control of the passenger compartment is performed according to the opening of the first heat source, the second expansion valve, and the fourth expansion valve; and / or, thermal management control of the battery is performed according to the opening of the second heat source and the third expansion valve. By adjusting the opening of these expansion valves, the distribution of refrigerant flow can be controlled, thereby adjusting the cooling effect on the passenger compartment and battery.

[0159] The opening degree of the second expansion valve is used to control the opening degree of the refrigerant flow to the first evaporator in the passenger compartment. The opening degree of the fourth expansion valve is used to control the opening degree of the refrigerant flow to the second evaporator in the passenger compartment, thereby adjusting the cooling effect of the passenger compartment. The opening degree of the third expansion valve is used to control the opening degree of the refrigerant flow to the condenser of the battery, thereby adjusting the cooling effect of the battery.

[0160] In some embodiments, when the thermal management requirements of the passenger compartment are high, the opening degree of the second expansion valve and the fourth expansion valve is increased, and the opening degree of the third expansion valve is decreased, thereby increasing the flow rate of refrigerant to the passenger compartment and improving the cooling effect. When the thermal management requirements of the battery are high, the flow rate of refrigerant to the battery can be increased by controlling the opening degree of the third expansion valve, thereby improving the cooling effect of the battery.

[0161] In some embodiments, under refrigeration conditions, the internal connection relationships of the second four-way valve include:

[0162] The first interface of the second four-way valve is connected to the second interface of the second four-way valve, and the second interface of the second four-way valve is connected to the first end of the motor circuit;

[0163] The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the fourth interface of the second four-way valve.

[0164] The fourth port of the second four-way valve is connected to the second end of the battery.

[0165] In cooling mode, the second interface of the motor circuit is connected to the battery circuit through the third interface and the fourth interface of the second four-way valve. The first end of the battery circuit is connected to the first end of the motor circuit through the first interface and the second interface of the second four-way valve, forming a complete circuit to heat the battery.

[0166] It should be noted that the embodiments of this disclosure may include multiple steps. For ease of description, these steps are numbered, but these numbers are not a limitation on the execution time slots or execution order between the steps; these steps can be implemented in any order, and the embodiments of this disclosure do not limit this.

[0167] Corresponding to the above-described thermal management method, the present invention also proposes a thermal management device. Since the device embodiments of the present invention correspond to the above-described method embodiments, details not disclosed in the device embodiments can be referred to the above-described method embodiments, and will not be repeated here.

[0168] Figure 8 is a schematic diagram of a thermal management device provided in an embodiment of this disclosure. As shown in Figure 8, it includes:

[0169] The first control unit 91 is used to control the opening of two target interfaces of the first four-way valve in response to the thermal management control mode of the crew compartment and / or battery.

[0170] The thermal management device disclosed herein controls the opening of two target interfaces of a first four-way valve in response to the thermal management control mode of the crew compartment and / or battery. Compared with related technologies, the embodiments of this application, by using a four-way valve as the fluid control valve in the thermal management system, realize the switching of fluid flow direction in the thermal management system, eliminating the need for a costly integrated valve, reducing the cost of the thermal management system, and the simple structure of the four-way valve results in a lower failure rate and reduced maintenance costs.

[0171] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, it further includes:

[0172] The first determining unit 92 is used to determine the first heat dissipation source of the passenger compartment, the opening degree of the second expansion valve and the opening degree of the fourth expansion valve, when the thermal management control mode is the cooling mode, after controlling the two target interfaces of the first four-way valve to be turned on; and / or, to determine the second heat dissipation source of the battery and the opening degree of the third expansion valve.

[0173] The second determining unit 93 is used to determine the first heat source of the passenger compartment and the second heat source of the battery based on the relationship between the first demand power of the passenger compartment and the second demand power of the battery in a preset correspondence between demand power and heat source when the thermal management control mode is heating mode.

[0174] The third determining unit 94 is used to determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source, respectively.

[0175] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, when the thermal management control mode is the heating mode, the two target interfaces of the first four-way valve include: the first interface of the first four-way valve and the third interface of the first four-way valve, and the second interface of the first four-way valve and the fourth interface of the first four-way valve.

[0176] The first control unit 91 is also used for:

[0177] The first port of the first four-way valve is connected to the third port of the first four-way valve, and the third port of the first four-way valve is connected to the first end of the heat exchange passage.

[0178] The first end of the heat dissipation passage is connected to the second port of the first four-way valve, and the second port of the first four-way valve is connected to the fourth port of the first four-way valve.

[0179] The fourth port of the first four-way valve is connected to the inlet of the compressor.

[0180] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the heating mode includes a battery rapid heating mode, and the first power demand is zero;

[0181] The second determining unit 93 is further configured to:

[0182] The second heat source is determined to be at least one of the following: a water-cooled condenser, a heat exchanger installed on the heat exchange path, and waste heat from the motor installed on the heat exchange path.

[0183] The third determining unit 94 is further configured to:

[0184] The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

[0185] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, it further includes:

[0186] The second control unit 95 is used to determine the opening degree of the second expansion valve, the opening degree of the third expansion valve, and the opening degree of the fourth expansion valve based on the relationship between the first power demand of the occupant compartment and the second power demand of the battery, and then to perform thermal management control on the battery based on the second heat source and the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve.

[0187] Optionally, the heating mode includes a battery and passenger compartment heating mode, and the first required power is greater than the second required power.

[0188] The second determining unit 93 is further configured to:

[0189] The second heat source is determined to be at least one of the heat exchanger and the waste heat of the motor, and the first heat source is determined to be the water-cooled condenser;

[0190] The third determining unit 94 is further configured to:

[0191] The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

[0192] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the second control unit 95 is further configured to:

[0193] After determining the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, thermal management control of the battery is performed according to the second heat source and the opening degrees of the third and fourth expansion valves; and,

[0194] Thermal management control of the passenger compartment is performed based on the opening degree of the first heat source and the second expansion valve.

[0195] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the heating mode includes a battery and passenger compartment heating mode, and the first required power is less than or equal to the second required power.

[0196] The second determining unit 93 is further configured to:

[0197] The second heat source is determined to be at least one of a water-cooled condenser, a heat exchanger, and waste heat from a motor; the first heat source is determined to be the water-cooled condenser.

[0198] The third determining unit 94 is further configured to:

[0199] The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

[0200] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the second control unit 95 is further configured to:

[0201] After determining the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, thermal management control of the battery is performed according to the second heat source and the opening degrees of the third and fourth expansion valves; and,

[0202] Thermal management control of the passenger compartment is performed based on the opening degree of the first heat source and the second expansion valve.

[0203] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the apparatus further includes:

[0204] The third control unit 96 is used to control the first interface of the second four-way valve to connect to the second end of the battery via the fourth interface of the second four-way valve after controlling the two target interfaces of the first four-way valve 102 to be turned on.

[0205] The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the second interface of the second four-way valve.

[0206] The second port of the second four-way valve is connected to the first end of the motor circuit.

[0207] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, when the thermal management control mode is the cooling mode, the two target interfaces of the first four-way valve include the first interface of the first four-way valve and the second interface of the first four-way valve, as well as the third interface of the first four-way valve and the fourth interface of the first four-way valve.

[0208] The first control unit 91 is also used for:

[0209] The first interface of the first four-way valve is connected to the second interface of the first four-way valve, and the second interface of the first four-way valve is connected to the first end of the heat dissipation passage.

[0210] The first end of the heat exchange passage is connected to the third port of the first four-way valve, and the third port of the first four-way valve is connected to the fourth port of the first four-way valve.

[0211] The fourth port of the first four-way valve is connected to the inlet of the compressor.

[0212] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the second control unit 95 is further configured to:

[0213] After determining the first heat source of the passenger compartment, the opening degree of the second expansion valve, and the opening degree of the fourth expansion valve; and / or, after determining the second heat source of the battery and the opening degree of the third expansion valve, thermal management control of the passenger compartment is performed based on the opening degrees of the first heat source, the second expansion valve, and the fourth expansion valve; and / or,

[0214] Thermal management control of the battery is performed based on the opening degree of the second heat source and the third expansion valve.

[0215] Furthermore, in one possible implementation of this disclosure embodiment, as shown in FIG9, the device further includes a fourth control unit 97, used for:

[0216] After controlling the two target interfaces of the first four-way valve to be connected, the first interface of the second four-way valve is connected to the second interface of the second four-way valve, and the second interface of the second four-way valve is connected to the first end of the motor circuit.

[0217] The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the fourth interface of the second four-way valve.

[0218] The fourth port of the second four-way valve is connected to the second terminal of the battery. It should be noted that the foregoing explanation of the method embodiment also applies to the device in this embodiment; the principle is the same, and it is not limited thereto in this embodiment.

[0219] According to embodiments of this disclosure, this disclosure also provides a vehicle that includes a thermal management device as described in any of the above embodiments.

[0220] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0221] Figure 10 illustrates a schematic block diagram of an example electronic device 1000 that can be used to implement embodiments of the present disclosure. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0222] As shown in Figure 10, device 1000 includes a computing unit 1001, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 1002 or a computer program loaded from storage unit 1008 into RAM (Random Access Memory) 1003. RAM 1003 can also store various programs and data required for the operation of device 1000. The computing unit 1001, ROM 1002, and RAM 1003 are interconnected via bus 1004. I / O (Input / Output) interface 1005 is also connected to bus 1004.

[0223] Multiple components in device 1000 are connected to I / O interface 1005, including: input unit 1006, such as keyboard, mouse, etc.; output unit 1007, such as various types of monitors, speakers, etc.; storage unit 1008, such as disk, optical disk, etc.; and communication unit 1009, such as network card, modem, wireless transceiver, etc. Communication unit 1009 allows device 1000 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0224] The computing unit 1001 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 1001 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 1001 performs the various methods and processes described above, such as thermal management methods. For example, in some embodiments, the thermal management method may be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 1008. In some embodiments, part or all of the computer program may be loaded and / or installed on device 1000 via ROM 1002 and / or communication unit 1009. When the computer program is loaded into RAM 1003 and executed by the computing unit 1001, one or more steps of the methods described above may be performed. Alternatively, in other embodiments, the computing unit 1001 may be configured to perform the aforementioned thermal management method by any other suitable means (e.g., by means of firmware).

[0225] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0226] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0227] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0228] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0229] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0230] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service ecosystem, addressing the shortcomings of traditional physical hosts and VPS (Virtual Private Server, or simply "VPS") services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0231] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0232] The various numerical designations such as "first," "second," etc., used in this disclosure are merely for ease of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate a sequential order.

[0233] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0234] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0235] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A thermal management system, comprising: Compressor, first four-way valve, heat exchange passage, heat dissipation passage; The first port of the first four-way valve is connected to the outlet of the compressor; The second port of the first four-way valve is connected to the first end of the heat dissipation passage; The third port of the first four-way valve is connected to the first end of the heat exchange passage; the second end of the heat dissipation passage is connected to the second end of the heat exchange passage. The fourth port of the first four-way valve is connected to the inlet of the compressor.

2. The system according to claim 1, wherein, The system also includes an indoor condenser and a battery circuit; The compressor outlet is connected to the first end of the indoor condenser; The second end of the indoor condenser is connected to the first port of the first four-way valve; The heat exchangers in the heat exchange path are respectively connected to the second end of the heat dissipation path and the battery circuit for heat exchange.

3. The system according to claim 1 or 2, wherein, The heat exchange pathway includes a first heat exchange pathway, a second heat exchange pathway, and a third heat exchange pathway. The first end of the first heat exchange passage, the first end of the second heat exchange passage, and the first end of the third heat exchange passage are connected in parallel to the third port of the first four-way valve. The first heat exchange passage is provided with a first expansion valve, a second expansion valve and a first evaporator. The first evaporator is located between the first expansion valve and the second expansion valve. The first expansion valve is used to control the opening and closing of the first heat exchange passage. A third expansion valve and a heat exchanger are installed in the second heat exchange passage; The third heat exchange passage is equipped with a fourth expansion valve and a second evaporator.

4. The system according to any one of claims 1-3, wherein, The system also includes: a second four-way valve and a motor circuit; The first end of the battery in the battery circuit is connected to the heat exchanger, and the heat exchanger is connected to the first port of the second four-way valve; The second port of the second four-way valve is connected to the first end of the motor circuit; The second end of the motor circuit is connected to the first end of the low-temperature radiator, and the second end of the low-temperature radiator is connected to the third port of the second four-way valve. The fourth port of the second four-way valve is connected to the second end of the battery.

5. The system according to claim 4, wherein, The system also includes: a water-cooled condenser; The second end of the motor circuit is connected to the first end of the water-cooled condenser, and the first end of the water-cooled condenser is connected to the third port of the second four-way valve. The second end of the water-cooled condenser is connected to the outlet of the compressor, and the first end of the water-cooled condenser is connected to the first end of the indoor condenser.

6. The system according to claim 5, wherein, A three-way valve is provided between the second end of the motor circuit and the first end of the water-cooled condenser; The first end of the three-way valve is connected to the second end of the motor circuit; The second end of the three-way valve is connected to the first end of the water-cooled condenser; The third end of the three-way valve is connected to the second end of the water-cooled condenser.

7. A thermal management method, said method being applied to the thermal management system according to any one of claims 1-6, comprising: In response to the thermal management control mode of the crew compartment and / or battery, the two target interfaces of the first four-way valve are controlled to be opened.

8. The method according to claim 7, wherein, After controlling the two target interfaces of the first four-way valve to open, it also includes: When the thermal management control mode is cooling mode, determine the first heat source of the passenger compartment, the opening degree of the second expansion valve and the opening degree of the fourth expansion valve; and / or, determine the second heat source of the battery and the opening degree of the third expansion valve. Alternatively, when the thermal management control mode is the heating mode, the first heating source of the passenger compartment and the second heating source of the battery are determined according to the relationship between the first power demand of the passenger compartment and the second power demand of the battery, based on the preset correspondence between the power demand and the heat source. The opening degree of the second expansion valve, the opening degree of the third expansion valve, and / or the opening degree of the fourth expansion valve corresponding to the first heat source and the second heat source are determined respectively.

9. The method according to claim 7 or 8, wherein, When the thermal management control mode is the heating mode, the two target interfaces of the first four-way valve include: the first interface of the first four-way valve and the third interface of the first four-way valve, and the second interface of the first four-way valve and the fourth interface of the first four-way valve. The two target interfaces for controlling the opening of the first four-way valve include: The first port of the first four-way valve is connected to the third port of the first four-way valve, and the third port of the first four-way valve is connected to the first end of the heat exchange passage. The first end of the heat dissipation passage is connected to the second port of the first four-way valve, and the second port of the first four-way valve is connected to the fourth port of the first four-way valve. The fourth port of the first four-way valve is connected to the inlet of the compressor.

10. The method according to claim 8 or 9, wherein, The heating mode includes a battery rapid heating mode, and the first required power is zero; The step of determining the first heat source for the passenger compartment and the second heat source for the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, within a preset correspondence between power demand and heat source, includes: The second heat source is determined to be at least one of the following: a water-cooled condenser, a heat exchanger installed on the heat exchange path, and waste heat from the motor installed on the heat exchange path. Determining the opening degree of the second expansion valve, the third expansion valve, and / or the fourth expansion valve corresponding to the first heat source and the second heat source respectively includes: The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

11. The method according to claim 10, wherein, After determining the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the method further includes: Thermal management control of the battery is performed based on the opening degree of the second heat source, the second expansion valve, the third expansion valve, and the fourth expansion valve.

12. The method according to any one of claims 8-11, wherein, The heating mode includes battery and passenger compartment heating modes, and the first required power is greater than the second required power. The step of determining the first heat source for the passenger compartment and the second heat source for the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, within a preset correspondence between power demand and heat source, includes: The second heat source is determined to be at least one of the heat exchanger and the waste heat of the motor, and the first heat source is determined to be the water-cooled condenser; Determining the opening degree of the second expansion valve, the third expansion valve, and / or the fourth expansion valve corresponding to the first heat source and the second heat source respectively includes: The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

13. The method according to claim 12, wherein, After determining the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the method further includes: Thermal management control of the battery is performed based on the opening degrees of the second heat source, the third expansion valve, and the fourth expansion valve; and, Thermal management control of the passenger compartment is performed based on the opening degree of the first heat source and the second expansion valve.

14. The method according to any one of claims 8-13, wherein, The heating mode includes battery and passenger compartment heating modes, and the first required power is less than or equal to the second required power. The step of determining the first heat source for the passenger compartment and the second heat source for the battery based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, within a preset correspondence between power demand and heat source, includes: The second heat source is determined to be at least one of a water-cooled condenser, a heat exchanger, and waste heat from a motor; the first heat source is determined to be the water-cooled condenser. Determining the opening degree of the second expansion valve, the third expansion valve, and / or the fourth expansion valve corresponding to the first heat source and the second heat source respectively includes: The opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve are determined based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery.

15. The method according to claim 14, wherein, After determining the opening degrees of the second expansion valve, the third expansion valve, and the fourth expansion valve based on the relationship between the first power demand of the passenger compartment and the second power demand of the battery, the method further includes: Thermal management control of the battery is performed based on the opening degrees of the second heat source, the third expansion valve, and the fourth expansion valve; and, Thermal management control of the passenger compartment is performed based on the opening degree of the first heat source and the second expansion valve.

16. The method according to any one of claims 8-15, wherein, After controlling the opening of the two target interfaces of the first four-way valve, the method further includes: The first interface of the second four-way valve is connected to the second end of the battery via the fourth interface of the second four-way valve; The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the second interface of the second four-way valve. The second port of the second four-way valve is connected to the first end of the motor circuit.

17. The method according to any one of claims 8-16, wherein, When the thermal management control mode is the cooling mode, the two target interfaces of the first four-way valve include the first interface of the first four-way valve and the second interface of the first four-way valve, as well as the third interface of the first four-way valve and the fourth interface of the first four-way valve. The two target interfaces for controlling the opening of the first four-way valve include: The first interface of the first four-way valve is connected to the second interface of the first four-way valve, and the second interface of the first four-way valve is connected to the first end of the heat dissipation passage. The first end of the heat exchange passage is connected to the third port of the first four-way valve, and the third port of the first four-way valve is connected to the fourth port of the first four-way valve. The fourth port of the first four-way valve is connected to the inlet of the compressor.

18. The method according to any one of claims 8-17, wherein, The first heat source of the crew compartment, the opening degree of the second expansion valve, and the opening degree of the fourth expansion valve are determined. And / or, after determining the second heat dissipation source of the battery and the opening degree of the third expansion valve, the method further includes: Thermal management control of the passenger compartment is performed based on the opening degree of the first heat source, the second expansion valve, and the fourth expansion valve. And / or, Thermal management control of the battery is performed based on the opening degree of the second heat source and the third expansion valve.

19. The method according to any one of claims 7-18, wherein, After controlling the opening of the two target interfaces of the first four-way valve, the method further includes: The first interface of the second four-way valve is connected to the second interface of the second four-way valve, and the second interface of the second four-way valve is connected to the first end of the motor circuit; The second end of the control motor circuit is connected to the third interface of the second four-way valve, and the third interface of the second four-way valve is connected to the fourth interface of the second four-way valve. The fourth port of the second four-way valve is connected to the second end of the battery.

20. A thermal management device, comprising: The first control unit is used to control the opening of two target interfaces of the first four-way valve in response to the thermal management control mode of the crew compartment and / or battery.

21. A vehicle comprising a thermal management device as described in claim 20.

22. An electronic device, comprising: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enables the at least one processor to perform the method of any one of claims 7-19.

23. A non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the method according to any one of claims 7-19.

24. A computer program product comprising a computer program that, when executed by a processor, implements the method according to any one of claims 7-19.

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