Thermal management system and method, computer device, vehicle and storage medium

Abstract

A thermal management system and method, a computer device, a vehicle and a storage medium. A four-way valve (17) can regulate the connection relationship between an electric drive circuit and a battery circuit, and a three-way valve can regulate the connection relationship between a heating apparatus, a heating circuit and the battery circuit. Therefore, said system can meet the requirement of the heating circuit selectively heating a passenger compartment and a battery (31) and the requirement of the electric drive circuit using electric drive waste heat to selectively heat the battery and the passenger compartment; and for some scenarios of vehicle use at year-round high temperatures, no heat pump system is required, thus making designed valve parts and system piping simpler, reducing the cost and resource waste of the thermal management system, and lowering the complexity of piping control.

Description

A thermal management system, method, computer device, vehicle and storage medium

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202411137211.X, filed on August 19, 2024, and entitled "A thermal management system, method, computer device, vehicle and storage medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of new energy technology, in particular to a thermal management system, method, computer device, vehicle and storage medium. BACKGROUND

[0004] With the guidance of the global low-carbon trend, electric vehicles replace traditional fuel vehicles in the field of travel, and pure electric vehicles can bring more comfortable and intelligent user experience, so more and more users choose to buy pure electric vehicles. Since pure electric vehicles use electricity as a power source, from the user's perspective, for pure electric vehicles, in actual use, users shift their attention from fuel consumption to real vehicle power consumption and energy efficiency.

[0005] However, in order to reduce power consumption, the heat pump system designed for this purpose increases the cost of the entire thermal management system due to the addition of many valves and components. For some high-temperature vehicle scenes, since the temperature in these regions is basically above 30℃ all year round, the demand for low-temperature heating is small, and the use of a heat pump system in the entire vehicle will result in an increase in cost and waste of resources, and the thermal management system architecture is complex, the pipeline is long, and there is a problem of design redundancy. SUMMARY

[0006] Therefore, the present application provides a thermal management system, method, computer device, vehicle and storage medium to solve the problem of increasing the cost of the system and wasting resources of the heat pump system in the high-temperature vehicle scene, and the problem of design redundancy.

[0007] In a first aspect, the present application provides a thermal management system, comprising an electric drive circuit, a battery circuit and a heating circuit, further comprising a first three-way valve and a four-way valve, wherein the first port of the first three-way valve is connected with the heating circuit, the second port is connected with a heating device of a passenger cabin of a vehicle in which the thermal management system is located, and the third port is connected with the battery circuit, for adjusting the connection relationship among the heating circuit, the heating device and the battery circuit; the fourth port and the fifth port of the four-way valve are connected with the electric drive circuit, and the sixth port and the seventh port are connected with the battery circuit, for adjusting the connection relationship between the battery circuit and the electric drive circuit.

[0008] The thermal management system provided by the present application can adjust the connection relationship between the electric drive circuit and the battery circuit through the designed four-way valve, and can adjust the connection relationship among the heating device, the heating circuit and the battery circuit through the three-way valve, so as to meet the requirements of selective heating of the heating circuit on the passenger cabin and the battery, and selective heating of the electric drive circuit on the battery and the passenger cabin by using the electric drive waste heat, and without using a heat pump system for some vehicle scenes in high temperature all the year round, the designed valve and the pipeline of the system are simpler, the cost and resource waste of the thermal management system are reduced, and the complexity of pipeline control is reduced.

[0009] In an optional embodiment, the thermal management system further comprises a refrigerant circuit, which at least comprises a condenser, a first refrigerant expansion valve, a passenger cabin air evaporator and a second refrigerant expansion valve, and the battery circuit at least comprises a battery heat exchanger, wherein the first refrigerant expansion valve is arranged on a pipeline connecting the outlet of the condenser with the inlet of the passenger cabin air evaporator, for controlling the refrigerant discharged from the condenser to enter the passenger cabin air evaporator; one end of the second refrigerant expansion valve is connected with the outlet of the condenser, and the other end is connected with the battery heat exchanger of the battery circuit, for controlling the refrigerant discharged from the refrigerant circuit to enter the battery heat exchanger of the battery circuit.

[0010] The first refrigerant expansion valve and the second refrigerant expansion valve are arranged in the present application, and the refrigerant circuit can realize refrigeration for the passenger cabin and / or the battery based on the conduction states of the two refrigerant expansion valves, so that the application scenarios of the thermal management system are more comprehensive.

[0011] In an optional embodiment, the heating circuit at least comprises a water heating device and a third water pump, and the battery circuit at least further comprises a second water pump and a battery, wherein the first port of the first three-way valve is connected with the water heating device through the third water pump, the second port is connected with the inlet of the heating device, and the third port is connected with the battery through the second water pump.

[0012] The ports of the three-way valve designed in the present application are respectively connected with the battery and the heating device, so as to realize heating for the battery and / or the heating device.

[0013] In an optional embodiment, the thermal management system further comprises at least a one-way valve, the electric drive circuit comprises at least a motor radiator, a front electric drive, a rear electric drive and a first water pump, and the battery circuit further comprises at least a battery and a second water pump, wherein the fourth port of the four-way valve is connected to the motor radiator through the front electric drive and the rear electric drive respectively, the fifth port is connected to the motor radiator through the first water pump, the sixth port is connected to the battery, and the seventh port is connected to the second water pump; the inlet of the one-way valve is connected to the battery, and the outlet of the one-way valve is connected to the heating device.

[0014] The conduction scheme of the four-way valve, the second one-way valve and the first three-way valve designed in the application can realize heating of the battery or the battery and the passenger cabin by using the residual heat of the electric drive, reduce resource waste and cost of the heating of the heat pump system, and has a simple structure.

[0015] In an optional embodiment, the electric drive circuit further comprises at least a temperature acquisition device and a second three-way valve, wherein the temperature acquisition device is arranged at the outlet end of the motor radiator and is used to acquire the temperature of the heat emitted by the motor radiator; the eighth port of the second three-way valve is connected to the first water pump, the ninth port is connected to the inlet of the motor radiator, and the tenth port is connected to the temperature acquisition device and is used to adjust the flow direction of the heat emitted by the motor radiator.

[0016] The temperature acquisition device and the second three-way valve designed in the application can adjust the flow direction of the heat based on the comparison between the temperature of the heat emitted by the motor radiator and the ambient temperature, and ensure storage of the heat.

[0017] In an optional embodiment, the first three-way valve is a three-way proportional valve.

[0018] The three-way valve designed in the application is a three-way proportional valve, which can set the corresponding outflow proportion according to the demand of the thermal management system when heating the passenger cabin and the battery at the same time, and improve the flexibility of system heating.

[0019] In a second aspect, the application provides a thermal management method, which is applied to the thermal management method of the first aspect or any of the corresponding embodiments thereof, and the method comprises the following steps: acquiring the running state, temperature of the current battery and temperature of the current passenger cabin in the vehicle; determining the battery temperature demand based on the running state of the current battery, and determining the current thermal management demand based on the relationship between the temperature of the current battery and the battery temperature demand and the relationship between the temperature of the current passenger cabin and the temperature demand of the passenger cabin of the user; and based on the current thermal management demand, controlling the port conduction state of the first three-way valve and the four-way valve, changing the working state of the thermal management system, and meeting the current thermal management demand.

[0020] The heat management method provided in the application determines the battery temperature demand based on the current operation state of the battery, determines the current heat management demand based on the relationship between the current temperature of the battery and the battery temperature demand and the relationship between the current temperature of the passenger compartment and the temperature demand of the passenger compartment of the user, and then controls the port conduction of the first three-way valve and the four-way valve based on the determined heat management demand, thereby meeting the current heat management demand.

[0021] In an optional embodiment, the determination of the battery temperature demand based on the current operation state of the battery, the determination of the current heat management demand based on the relationship between the current temperature of the battery and the battery temperature demand and the relationship between the current temperature of the passenger compartment and the temperature demand of the passenger compartment of the user comprises: if the current temperature of the battery is within the battery temperature demand range, but the current temperature of the passenger compartment is greater than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the first heat management demand of the refrigerant circuit for cooling the passenger compartment, or if the current temperature of the battery is greater than the battery temperature demand range, and the current temperature of the passenger compartment is greater than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the second heat management demand of the refrigerant circuit for cooling the passenger compartment and the battery, or if the current temperature of the battery is greater than the battery temperature demand range, the current temperature of the passenger compartment is greater than the temperature demand of the passenger compartment of the user, and the battery is in the fast charging state, determining the current heat management demand as the third heat management demand of the refrigerant circuit for cooling the battery, or if the current temperature of the battery is lower than the battery temperature demand range, but the current temperature of the passenger compartment is greater than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the fourth heat management demand of the refrigerant circuit for cooling the passenger compartment and the heating circuit for heating the battery, or if the current temperature of the battery is in the passive heating state, and the current temperature of the passenger compartment is greater than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the fifth heat management demand of the refrigerant circuit for cooling the passenger compartment and the electric drive circuit for heating the battery, or if the current temperature of the battery is greater than the battery temperature demand range, and the current temperature of the passenger compartment is lower than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the sixth heat management demand of the refrigerant circuit for cooling the battery and the heating circuit for heating the passenger compartment, or if the current temperature of the battery is lower than the battery temperature demand range, the current temperature of the passenger compartment is lower than the temperature demand of the passenger compartment of the user, and the battery is in the fast charging state, determining the current heat management demand as the seventh heat management demand of the electric drive circuit for heating the battery, or if the current temperature of the battery is lower than the battery temperature demand range, and the current temperature of the passenger compartment is lower than the temperature demand of the passenger compartment of the user, determining the current heat management demand as the eighth heat management demand of the heating circuit for heating the passenger compartment and the battery, or if the current temperature of the battery and the passenger compartment is in the electric drive waste heat heating scene, determining the current heat management demand as the ninth heat management demand of the electric drive circuit for heating the passenger compartment and the battery.

[0022] The heat management system and method designed in the application connects the battery, the electric drive and the heater core through a four-way valve and a three-way valve, and based on different scene requirements, the electric drive waste heat is used to heat the battery and the passenger cabin.

[0023] In an optional embodiment, the control of the port conduction state of the first three-way valve and the four-way valve based on the current heat management requirement comprises: if the current heat management requirement is the first heat management requirement, the second heat management requirement or the third heat management requirement, the first three-way valve is controlled to be closed, the fourth port and the fifth port of the four-way valve are controlled to be closed, and the sixth port and the seventh port are controlled to be connected and conducted; if the current heat management requirement is the fourth heat management requirement, the first port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are controlled to be connected and conducted, and the sixth port and the seventh port are controlled to be connected and conducted; if the current heat management requirement is the fifth heat management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are controlled to be connected and conducted, and the fifth port and the seventh port are controlled to be connected and conducted; if the current heat management requirement is the sixth heat management requirement, the first port and the second port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are controlled to be connected and conducted, and the sixth port and the seventh port are controlled to be connected and conducted; if the current heat management requirement is the seventh heat management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are controlled to be connected and conducted, and the fifth port and the seventh port are controlled to be connected and conducted; if the current heat management requirement is the eighth heat management requirement, the first port, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are controlled to be connected and conducted, and the sixth port and the seventh port are controlled to be connected and conducted; and if the current heat management requirement is the ninth heat management requirement, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the sixth port of the four-way valve are controlled to be connected and conducted, and the fifth port and the seventh port are controlled to be connected.

[0024] In an optional embodiment, if the current heat management requirement is the first heat management requirement, the fourth heat management requirement or the fifth heat management requirement, the first refrigerant expansion valve is controlled to be conducted and the second refrigerant expansion valve is controlled to be closed; if the current heat management requirement is the second heat management requirement, the first refrigerant expansion valve is controlled to be conducted and the second refrigerant expansion valve is controlled to be conducted; if the current heat management requirement is the third heat management requirement or the sixth heat management requirement, the first refrigerant expansion valve is controlled to be closed and the second refrigerant expansion valve is controlled to be conducted.

[0025] The application connects the refrigerant circuit and the battery circuit through the expansion valve based on different scenes, and realizes the refrigeration of the battery and the passenger cabin.

[0026] In an optional implementation, the method further includes: determining whether the temperature of heat dissipated by the motor radiator is lower than the ambient temperature; if the temperature of heat dissipated by the motor radiator is lower than the ambient temperature, controlling the eighth port and the tenth port of the second three-way valve to be in conduction so as to flow the heat dissipated by the motor radiator into the automatic driving controller and the rear electric drive; and if the temperature of heat dissipated by the motor radiator is not lower than the ambient temperature, controlling the eighth port and the ninth port of the second three-way valve to be in conduction so as to flow the heat dissipated by the motor radiator into the motor radiator.

[0027] The temperature collection device and the second three-way valve designed in the application can adjust the flow direction of heat based on the comparison between the temperature of heat dissipated by the motor radiator and the ambient temperature, and ensure the storage of heat.

[0028] In a third aspect, the application provides a computer device, including a memory and a processor, which are in communication connection with each other, and the memory stores computer instructions, and the processor executes the computer instructions to perform the heat management method of the second aspect or any of the corresponding embodiments thereof.

[0029] In a fourth aspect, the application provides a vehicle, which includes the heat management system of the first aspect or any of the corresponding embodiments thereof and a controller, and the controller is used to perform the heat management method of the second aspect or any of the corresponding embodiments thereof.

[0030] In a fifth aspect, the application provides a computer readable storage medium, which stores computer instructions, and the computer instructions are used to make a computer execute the heat management method of the second aspect or any of the corresponding embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creative effort.

[0032] FIG. 1 is a structural example diagram of a heat management system according to an embodiment of the application;

[0033] FIG. 2 is a flow diagram of a heat management method according to an embodiment of the application;

[0034] FIG. 3 is a flow example diagram of a first heat management requirement in a heat management method according to an embodiment of the application;

[0035] FIG. 4 is a flow example diagram of a second heat management requirement in a heat management method according to an embodiment of the application;

[0036] FIG. 5 is a flowchart of a third thermal management requirement in a thermal management method according to an embodiment of the present application;

[0037] FIG. 6 is a flowchart of a fourth thermal management requirement in a thermal management method according to an embodiment of the present application;

[0038] FIG. 7 is a flowchart of a fifth thermal management requirement in a thermal management method according to an embodiment of the present application;

[0039] FIG. 8 is a flowchart of a sixth thermal management requirement in a thermal management method according to an embodiment of the present application;

[0040] FIG. 9 is a flowchart of a seventh thermal management requirement in a thermal management method according to an embodiment of the present application;

[0041] FIG. 10 is a flowchart of a battery passenger compartment uniform temperature state in a thermal management method according to an embodiment of the present application;

[0042] FIG. 11 is a flowchart of an eighth thermal management requirement in a thermal management method according to an embodiment of the present application;

[0043] FIG. 12 is a flowchart of a ninth thermal management requirement in a thermal management method according to an embodiment of the present application;

[0044] FIG. 13 is a hardware structure schematic diagram of a computer device according to an embodiment of the present application;

[0045] FIG. 14 is a structure schematic diagram of a vehicle according to an embodiment of the present application.

[0046] In the figure, the electric compressor 1, the third temperature and pressure sensor 2, the condenser 3, the first refrigerant expansion valve 4, the passenger compartment air evaporator 5, the first temperature and pressure sensor 6, the second refrigerant expansion valve 7, the battery heat exchanger 8, the second temperature and pressure sensor 9, the fan 10, the motor radiator 11, the first one-way valve 12, the temperature acquisition device 13, the automatic driving controller 14, the front electric drive 15, the rear electric drive 16, the four-way valve 17, the first water pump 18, the second three-way valve 19, the air conditioner blower 20, the radiator overflow pipe 21, the cooling pipeline 22, the water storage pot 23, the water supplement pipe 24, the water heating device 25, the third water pump 26, the first three-way valve 27, the warm air device 28, the second water pump 29, the second temperature sensor 30, the battery 31, and the second one-way valve 32. DETAILED DESCRIPTION

[0047] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] In the field of travel, travel modes represented by electrification replace traditional fuel vehicles, and pure electric vehicles can bring more comfortable and intelligent user experience, so more and more users choose to purchase pure electric vehicles. For pure electric vehicles, in actual use, users shift their attention from fuel consumption to real vehicle electricity consumption and energy supplement efficiency.

[0049] In order to reduce real vehicle electricity consumption, especially low-temperature electricity consumption, major OEMs have developed heat pump systems to reduce electricity consumption under low-temperature systems; for the problem of energy supplement efficiency, battery manufacturers are constantly researching battery materials to improve battery charging efficiency. At present, in order to improve charging efficiency, the battery voltage platform has been improved to 800V, and the charging power has been improved to 250KW, and some manufacturers have even proposed a charging power of 480KW.

[0050] However, in order to reduce electricity consumption, the heat pump system adopted by the whole vehicle increases many valve parts and components, which increases the cost of the whole heat management system. The vehicles sold with heat pump systems meet the actual needs of users. When pure electric vehicles travel in high-temperature scenes all year round, since the temperature in these areas is basically above 30℃ all year round, the demand for low-temperature heating is small, and the adoption of heat pump systems by the whole vehicle will lead to an increase in cost and waste of resources; at the same time, the improvement of battery charging rate, in normal temperature conditions, there is a demand for battery heating at the initial stage when charging, and the heat management system needs to consider the design of the heating part components and the pipeline system.

[0051] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements, it can be wireless connection, or wired connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0054] The embodiment of the present application discloses a kind of thermal management systems, as shown in Figure 1, the thermal management system includes electric drive loop, battery loop and heating loop, and also include first three-way valve 27 and four-way valve 17, wherein the first port of first three-way valve 27 is connected with heating loop, second port is connected with the heating device 28 of the passenger cabin of the vehicle where the thermal management system is located, third port is connected with battery loop, for adjusting the connection relationship between heating loop, heating device 28, battery loop;Fourth port and fifth port of four-way valve 17 are connected with electric drive loop, sixth port and seventh port are connected with battery loop, for adjusting the connection relationship between battery loop and electric drive loop.

[0055] As shown in Figure 1, the electric drive loop of the embodiment of the present application at least includes but is not limited to motor radiator 11, first check valve 12, automatic driving controller 14, front electric drive 15, rear electric drive 16, first water pump 18, radiator overflow pipe 21, cooling loop 22 (flowing cooling liquid to realize waterway heat flow), water supplement pipe 24 and water storage pot 23, just as an example, wherein the automatic driving controller 14 is connected in series with the front electric drive 15 and then connected in parallel with the rear electric drive 16;Battery loop at least includes but is not limited to battery 31, second temperature sensor 30 (in order to check the consistency of actual heat temperature, i.e. cooling liquid temperature and battery 31 demand temperature, facilitate actual control correction, improve control precision), second water pump 29, just as an example;Heating loop at least includes but is not limited to water heating device 25, third water pump 26 and heating device 28, wherein the design of water heating device 25 is not limited, the embodiment of the present application increases the heating core (Positive Temperature Coefficient, PTC) in the heating core structure, i.e. water heating PTC, can improve the passenger cabin heating function and the generalization of vehicle heating ventilation air conditioning, just as an example.

[0056] The fourth port and the fifth port of the four-way valve 17 are arranged on the electric drive circuit pipeline, the sixth port and the seventh port are arranged on the battery circuit, the connection of the fourth port and the fifth port is conducted, the normal heat circulation work of the electric drive circuit can be realized, the connection of the sixth port and the seventh port is conducted, the normal circulation work of the battery circuit can be realized, if the current system scene needs to use the electric drive waste heat to heat the battery 31, the ports on the electric drive circuit and the ports on the battery circuit can be connected and conducted, for example, the fourth port is connected with the sixth port, the fifth port is connected with the seventh port, the connection scheme can be designed according to the actual port arrangement position, only as an example, the heat dissipated by the motor radiator 11 can flow into the battery circuit through the connected ports of the electric drive circuit and the battery circuit, and the battery 31 is heated.

[0057] The first port of the first three-way valve 27 is connected with the heating circuit, the second port is connected with the heating device 28 of the passenger cabin of the vehicle where the thermal management system is located, and the third port is connected with the battery circuit. The first port and the second port of the first three-way valve 27 are conducted, the third port is closed, the series connection of the heating circuit and the heating device 28 is realized, the heating circuit can provide heat to the heating device 28, and then the passenger cabin is heated. The first port and the third port of the first three-way valve 27 are conducted, the second port is closed, the series connection of the heating circuit and the battery circuit is realized, the heating circuit can provide heat to the battery circuit, and then the battery 31 is heated. The first port, the second port and the third port of the first three-way valve 27 are all conducted, the heating device 28 and the battery circuit are connected in parallel after being connected in series with the heating circuit, so that the heat of the heating circuit can flow to the heating device 28 and the battery circuit at the same time. The second port and the third port of the first three-way valve 27 are conducted, the first port is closed, when the electric drive circuit and the battery circuit are conducted through the four-way valve 17, the electric drive waste heat heats the battery 31, at this time, the heat inflow path can also be conducted due to the conduction of the second port and the third port, so that the electric drive waste heat can circulate on the heating device 28 and the battery circuit, realizing the common heating of the battery 31 and the heating device 28 by the electric drive waste heat, only as an example.

[0058] The heat management system provided in the application can adjust the connection relationship between the electric drive circuit and the battery circuit through the four-way valve 17, and adjust the connection relationship between the heating circuit, the battery circuit and the air heating device 28 through the three-way valve, so as to meet the needs of selective heating of the heating circuit to the passenger compartment and the battery 31 and selective heating of the electric drive circuit to the battery 31 and the passenger compartment by using the electric drive waste heat. For some vehicle scenes with high temperature all the year round, the heat pump system does not need to be used, the designed valve and pipeline of the system are simpler, the cost of the heat management system is reduced, the waste of resources is reduced, and the complexity of pipeline control is reduced. In some optional embodiments, the heat management system further includes a refrigerant circuit, the refrigerant circuit at least includes a condenser 3, a first refrigerant expansion valve 4, a passenger compartment air evaporator 5, a second refrigerant expansion valve 7, and a battery heat exchanger 8 in the battery circuit, wherein the first refrigerant expansion valve 4 is arranged on a pipeline connecting the outlet of the condenser 3 and the inlet of the passenger compartment air evaporator 5, and is used to control the refrigerant discharged from the condenser 3 to enter the passenger compartment air evaporator 5; one end of the second refrigerant expansion valve 7 is connected with the outlet of the condenser 3, and the other end is connected with the battery heat exchanger 8 of the battery circuit, and is used to control the refrigerant discharged from the refrigerant circuit to enter the battery heat exchanger 8 of the battery circuit.

[0059] As shown in FIG. 1, the refrigerant circuit of the embodiment of the application includes but is not limited to an electric compressor 1, a first temperature and pressure sensor 6, a second temperature and pressure sensor 9, a third temperature and pressure sensor 2, a condenser 3, a first refrigerant expansion valve 4, a passenger compartment air evaporator 5, and a second refrigerant expansion valve 7. The first refrigerant expansion valve 4 can be arranged on a pipeline connecting the outlet of the condenser 3 and the inlet of the passenger compartment air evaporator 5, and is used to control the refrigerant discharged from the condenser 3 to enter the passenger compartment air evaporator 5, so as to realize refrigeration of the passenger compartment. The specific circulation path for refrigeration of the passenger compartment is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant, which passes through the third temperature and pressure sensor 2 and enters the condenser 3. After heat exchange in the condenser 3, the refrigerant enters the first refrigerant expansion valve 4 in a conducting state, is throttled and depressurized, enters the passenger compartment air evaporator 5 to exchange heat with air in the passenger compartment, and then returns to the electric compressor 1, which is only an example.

[0060] As shown in FIG. 1, the battery circuit further comprises a battery heat exchanger 8, the battery heat exchanger 8 comprising three ports, one port being connected with the battery 31, one end being connected with the second water pump 29, and one end being connected with the condenser 3 through the second refrigerant expansion valve 7. The second refrigerant expansion valve 7 is connected with the outlet of the condenser 3 at one end and connected with the battery heat exchanger 8 at the other end, for controlling the refrigerant discharged from the refrigerant circuit to enter the battery heat exchanger 8 of the battery circuit, so as to realize refrigeration for the battery 31. The specific circulation path for refrigeration for the battery 31 is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant to enter the condenser 3 through the third temperature and pressure sensor 2, after heat exchange in the condenser 3, the refrigerant enters the second refrigerant expansion valve 7 in the conducting state, and after throttling and pressure reduction, enters the battery heat exchanger 8, after heat exchange between the battery heat exchanger 8 and the water circuit of the battery circuit, the refrigerant flows out of the battery heat exchanger 8 and returns to the electric compressor 1. At this time, the battery heat exchanger 8 in the battery circuit receives the refrigerant flowing from the refrigerant circuit, and the outlet water enters the second water pump 29, from the second water pump 29 to the battery 31, and after heat exchange with the battery 31, flows out of the battery 31 and returns to the heat exchanger, which is only an example.

[0061] The present application sets the first refrigerant expansion valve 4 and the second refrigerant expansion valve 7, and realizes refrigeration for the passenger compartment and / or the battery 31 by the refrigerant circuit based on the conducting state of the two refrigerant expansion valves, so as to make the application scenarios of the thermal management system more comprehensive. Specifically, the heating circuit at least comprises the water heating device 25 and the third water pump 26, the battery circuit at least comprises the second water pump 29 and the battery 31, the first port of the first three-way valve 27 is connected with the water heating device 25 through the third water pump 26, the second port is connected with the inlet of the heating device 28, and the third port is connected with the battery 31 through the second water pump 29.

[0062] The ports of the three-way valve designed in the present application are respectively connected with the battery 31 and the heating device 28, so as to realize heating for the battery 31 and / or the heating device 28.

[0063] As shown in FIG. 1, the circulation path of the heating circuit of the present application for heating the passenger compartment is the water heating device 25, the third water pump 26, the first port and the second port of the first three-way valve 27, the heating device 28, and the water heating device 25 after flowing out of the heating device 28, wherein the heating device 28 is not limited, and can be designed according to the actual system model and demand, such as a heating core, which is only an example.

[0064] The circulation path of the heating circuit of the present application for heating the battery 31 is the water heating device 25, the third water pump 26, the first port and the third port of the first three-way valve 27, the battery 31 through the second water pump 29, and the water heating device 25 after heat exchange in the battery 31, which is only an example.

[0065] Specifically, the first three-way valve 27 is a three-way proportional valve.

[0066] The circulation path of the heating circuit of the embodiment of the present application for simultaneously heating the passenger cabin and the battery 31 is that the outlet water of the water heating device 25 enters the third water pump 26, flows out of the third water pump 26, enters the first three-way valve 27 through the first port, and flows out of the second port and the third port respectively, wherein the proportion of the heat flowing out of the second port and the third port can be adjusted based on the demand of the thermal management system, and the corresponding proportion of the flow is set, one way of the flow enters the air heating device 28, and the other way of the flow enters the battery 31 through the second water pump 29, and only as an example.

[0067] The three-way valve designed in the present application is a three-way proportional valve, and when the passenger cabin and the battery 31 are simultaneously heated, the corresponding flow proportion can be set according to the demand of the thermal management system, and the flexibility of the system heating is improved. Specifically, the thermal management system further includes at least a second one-way valve 32, the electric drive circuit includes at least a motor radiator 11, a front electric drive 15, a rear electric drive 16 and a first water pump 18, and the battery circuit includes at least a battery 31 and a second water pump 29, wherein the fourth port of the four-way valve 17 is connected with the motor radiator 11 through the front electric drive 15 and the rear electric drive 16 respectively, the fifth port is connected with the motor radiator 11 through the first water pump 18, the sixth port is connected with the battery 31, and the seventh port is connected with the second water pump 29; the inlet of the second one-way valve 32 is connected with the battery 31, and the outlet of the second one-way valve 32 is connected with the air heating device 28.

[0068] As shown in FIG. 1, the fourth port of the four-way valve 17 is connected with the motor radiator 11 through the front electric drive 15 and the rear electric drive 16 respectively, so that the electric drive residual heat of the motor radiator 11 outlet water enters the automatic driving controller 14 and the rear electric drive 16 through the first one-way valve 12, and the antifreeze passing through the automatic driving controller 14 first enters the front electric drive 15, and the antifreeze flowing out of the front electric drive 15 and the antifreeze flowing out of the rear electric drive 16 are mixed and then flow into the fourth port of the four-way valve 17, only as an example.

[0069] The fifth port of the four-way valve 17 is connected with the motor radiator 11 through the first water pump 18, if it is determined that the electric drive circuit does not need to heat the battery 31 or the passenger cabin, then the fourth port and the fifth port are connected to make the electric drive residual heat flow back to the motor radiator 11 through the first water pump 18, only as an example; the sixth port of the four-way valve 17 is connected with the battery 31, and the seventh port is connected with the second water pump 29 in the battery circuit, generally the sixth port and the seventh port are connected to make the battery circuit circulate normally, for example, the outlet water of the battery heat exchanger 8 flows into the second water pump 29, and then can flow into the battery 31 through the seventh port and the sixth port in turn for heat exchange, only as an example.

[0070] If it is determined that the electric drive loop needs to heat the battery 31, the fourth port and the sixth port are connected, the fifth port and the seventh port are connected, and the circulation path is that the antifreeze flows into the fourth port of the four-way valve 17, flows out from the sixth port to heat exchange with the battery 31, then passes through the battery heat exchanger 8 and the second water pump 29, flows into the first water pump 18 through the connected fifth port and seventh port, only as an example.

[0071] The second one-way valve 32 is designed in the embodiment of the application, wherein the inlet of the second one-way valve 32 is connected with the battery 31, and the outlet of the second one-way valve 32 is connected with the heating device 28, so that when the electric drive waste heat is used to heat the passenger cabin, the battery 31 can flow into the heating device 28, at this time, the second port and the third port of the first three-way valve 27 can be connected, and the first port is closed, the circulation path of the electric drive loop for heating the passenger cabin and the battery 31 is that the antifreeze flows into the fourth port of the four-way valve 17, flows out from the sixth port to heat exchange with the battery 31, flows out from the battery 31 to enter the heating device 28 through the second one-way valve 32, flows out after heat exchange with the air of the passenger cabin through the heating device 28, enters the first three-way valve 27 from the third port of the first three-way valve 27, and flows out from the second water pump 29 to enter the four-way valve 17 from the seventh port and the fifth port, and then enters the first water pump 18, only as an example.

[0072] The four-way valve 17, the second one-way valve 32 and the first three-way valve 27 designed in the application can realize heating of the battery 31 or the battery 31 and the passenger cabin by using the electric drive waste heat, reduce the resource waste and cost of the heat pump system, and have a simple structure.

[0073] In an optional embodiment, the electric drive loop further comprises a temperature acquisition device 13 and a second three-way valve 19, wherein the temperature acquisition device 13 is arranged at the outlet end of the motor radiator 11 and is used to acquire the temperature of the heat emitted by the motor radiator 11; the eighth port of the second three-way valve 19 is connected with the first water pump 18, the ninth port is connected with the inlet of the motor radiator 11, and the tenth port is connected with the temperature acquisition device 13, and is used to adjust the flow direction of the heat emitted by the motor radiator 11.

[0074] As shown in FIG. 1, the embodiment of the present application designs to set the temperature collection device 13 at the outlet end of the motor radiator 11, which can collect the heat temperature emitted by the motor radiator 11. The eighth port of the second three-way valve 19 is connected with the first water pump 18, the ninth port is connected with the inlet of the motor radiator 11, and the tenth port is connected with the temperature collection device 13. The heat flowing into the first water pump 18 can be guided through the ninth port or the tenth port based on the comparison of the heat temperature collected by the temperature collection device 13 and the ambient temperature, so that the heat returns to the motor radiator 11 or directly flows into the automatic driving controller 14 and the rear electric drive 16. It should be noted that the temperature collection device 13 is only an example of a first temperature sensor.

[0075] The reason for not flowing through the motor radiator is that when the cooling liquid temperature is lower than the ambient temperature, the cooling liquid no longer needs to be cooled, and in order to store energy.

[0076] The temperature collection device 13 and the second three-way valve 19 designed in the present application can adjust the flow direction of the heat based on the comparison of the heat temperature emitted by the motor radiator 11 and the ambient temperature, so as to ensure the storage of the heat.

[0077] According to the embodiment of the present application, a heat management method embodiment is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a group of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from here.

[0078] In the present embodiment, a heat management method is provided, which can be used in the heat management system described in the above embodiments. FIG. 2 is a flowchart of the heat management method according to the embodiment of the present application. As shown in FIG. 2, the flow includes the following steps:

[0079] In step S101, the running state, temperature of the current battery and the temperature of the current passenger compartment in the vehicle are obtained.

[0080] In step S102, the battery temperature demand is determined based on the running state of the current battery, and the current heat management demand is determined based on the relationship between the temperature of the current battery and the battery temperature demand and the relationship between the temperature of the current passenger compartment and the temperature demand of the passenger compartment of the user.

[0081] In step S103, based on the current heat management demand, the port conduction state of the first three-way valve and the four-way valve is controlled, and the working state of the heat management system is changed to meet the current heat management demand.

[0082] The embodiments of the present application can collect the temperature of the current battery and the temperature of the current passenger cabin in real time through a sensor or the like collecting device, and can also acquire the current state of the battery in real time. Different operating states of the battery have their corresponding normal temperature requirement ranges. The temperature of the current battery and the normal temperature requirement range corresponding to the operating state of the current battery can be compared. If it is greater than the normal temperature requirement range, it is determined that the current thermal management requirement is to cool the battery. For example only, the user can set the comfortable temperature of the passenger cabin based on personal preference. The user-set comfortable temperature and the collected current temperature of the passenger cabin are compared. For example, if the current temperature of the passenger cabin is lower than the user-set comfortable temperature, it is determined that the current thermal management requirement is to heat the passenger cabin. For example only, the port conduction state of the first three-way valve and the four-way valve can be controlled based on the determined thermal management requirement, and the working state of the thermal management system can be changed. For example, if it is determined that the current thermal management requirement is to heat the passenger cabin by the heating circuit, the first port and the second port of the first three-way valve can be controlled to be conductive, and the fourth port and the fifth port of the four-way valve can be connected and conductive. For example only.

[0083] The thermal management method provided by the present application determines the battery temperature requirement based on the operating state of the current battery, determines the current thermal management requirement based on the relationship between the temperature of the current battery and the battery temperature requirement and the relationship between the temperature of the current passenger cabin and the user's temperature requirement for the passenger cabin, and then controls the port conduction of the first three-way valve and the four-way valve based on the determined thermal management requirement, thereby achieving the satisfaction of the current thermal management requirement.

[0084] Specifically, if the current battery temperature is within the battery temperature requirement range, but the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the first thermal management requirement of the refrigerant circuit for cooling the passenger compartment, or if the current battery temperature is greater than the battery temperature requirement range, and the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the second thermal management requirement of the refrigerant circuit for cooling the passenger compartment and the battery, or if the current battery temperature is greater than the battery temperature requirement range, the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, and the battery is in a fast charging state, it is determined that the current thermal management requirement is the third thermal management requirement of the refrigerant circuit for cooling the battery, or if the current battery temperature is lower than the battery temperature requirement range, but the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the fourth thermal management requirement of the refrigerant circuit for cooling the passenger compartment and the heating circuit for heating the battery, or if the current battery temperature is in a passive heating state, and the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the fifth thermal management requirement of the refrigerant circuit for cooling the passenger compartment and the electric drive circuit for heating the battery, or if the current battery temperature is greater than the battery temperature requirement range, and the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the sixth thermal management requirement of the refrigerant circuit for cooling the battery and the heating circuit for heating the passenger compartment, or if the current battery temperature is lower than the battery temperature requirement range, the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, and the battery is in a fast charging state, it is determined that the current thermal management requirement is the seventh thermal management requirement of the electric drive circuit for heating the battery, or if the current battery temperature is lower than the battery temperature requirement range, and the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, it is determined that the current thermal management requirement is the eighth thermal management requirement of the heating circuit for heating the passenger compartment and the battery, or if the current battery and passenger compartment are in an electric drive waste heat heating scene, it is determined that the current thermal management requirement is the ninth thermal management requirement of the electric drive circuit for heating the passenger compartment and the battery, and there is a case where the current thermal management system is in a normal temperature working condition, the battery and the passenger compartment are in a uniform temperature scene, and there is no need to cool or heat the battery and the passenger compartment, the electric drive circuit performs normal motor heat dissipation circulation, and the battery circuit performs normal circulation work.

[0085] The present application determines the thermal management requirements corresponding to all possible situations of the battery and the passenger compartment during vehicle driving, and improves the application scenario universality of the thermal management method.

[0086] Specifically, based on the current thermal management requirement, the port conduction state of the first three-way valve and the four-way valve is controlled, including: if the current thermal management requirement is the first thermal management requirement or the second thermal management requirement or the third thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the fifth port of the four-way valve are controlled to be closed, and the sixth port and the seventh port are connected and conducted; if the current thermal management requirement is the fourth thermal management requirement, the first port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are connected and conducted, and the sixth port and the seventh port are connected and conducted; if the current thermal management requirement is the fifth thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are connected and conducted, and the fifth port and the seventh port are connected and conducted; if the current thermal management requirement is the sixth thermal management requirement, the first port and the second port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are connected and conducted, and the sixth port and the seventh port are connected and conducted; if the current thermal management requirement is the seventh thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are connected and conducted, and the fifth port and the seventh port are connected and conducted; if the current thermal management requirement is the eighth thermal management requirement, the first port, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are connected and conducted, and the sixth port and the seventh port are connected and conducted; if the current thermal management requirement is the ninth thermal management requirement, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the sixth port of the four-way valve are connected and conducted, and the fifth port and the seventh port are connected.

[0087] And if the current thermal management requirement is the first thermal management requirement or the fourth thermal management requirement or the fifth thermal management requirement, the first refrigerant expansion valve is controlled to be conducted and the second refrigerant expansion valve is controlled to be closed; if the current thermal management requirement is the second thermal management requirement, the first refrigerant expansion valve is controlled to be conducted and the second refrigerant expansion valve is controlled to be conducted; if the current thermal management requirement is the third thermal management requirement or the sixth thermal management requirement, the first refrigerant expansion valve is controlled to be closed and the second refrigerant expansion valve is controlled to be conducted.

[0088] In an optional embodiment, it is judged whether the heat temperature emitted by the motor radiator is lower than the ambient temperature; if the heat temperature emitted by the motor radiator is lower than the ambient temperature, the eighth port and the tenth port of the second three-way valve are controlled to be conducted to flow the heat emitted by the motor radiator into the automatic driving controller and the rear electric drive; if the heat temperature emitted by the motor radiator is not lower than the ambient temperature, the eighth port and the ninth port of the second three-way valve are controlled to be conducted to flow the heat emitted by the motor radiator into the motor radiator.

[0089] As shown in FIG. 3, the dashed line indicates the line that does not circulate, and the solid line indicates the line through which heat or refrigerant flows. The current thermal management requirement is the first thermal management requirement, that is, when the thermal management system is in a high-temperature working condition and only cools the passenger compartment, at this time, the battery circuit and the heating circuit do not work, and only the refrigerant circuit and the electric drive circuit work, that is, the first three-way valve 27 is controlled to be closed, and the refrigerant circuit is in the following state: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, the heat carried by the refrigerant of the condenser is blown to the environment by the fan 10 to realize heat exchange, and then the refrigerant enters the first refrigerant expansion valve 4, is throttled and pressure-reduced, enters the passenger compartment air evaporator 5, and the cold air of the passenger compartment air evaporator 5 is blown to the passenger compartment by the air conditioner blower 20, and then the refrigerant returns to the electric compressor 1 through the first temperature and pressure sensor 6, at this time, the second refrigerant expansion valve 7 is in a completely closed state; the electric drive circuit is in the following state: the water outlet of the motor radiator 11 enters the automatic driving controller 14 and the rear electric drive 16 through the first one-way valve 12 respectively, wherein the fan 10 blows the heat of the motor radiator 11 to the environment to realize heat exchange, the antifreeze passing through the automatic driving controller 14 first enters the front electric drive 15, the antifreeze flowing out of the front electric drive 15 mixes with the antifreeze flowing out of the rear electric drive 16, and then enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17 and flows out from the fifth port (C port), enters the first water pump 18, and then flows out of the first water pump 18, enters the second three-way valve 19 from the eighth port (C port) of the second three-way valve 19 and flows out from the ninth port (B port), and then flows into the motor radiator 11, which is only an example.

[0090] As shown in FIG. 4, the current thermal management requirement is the second thermal management requirement, that is, when the thermal management system simultaneously cools the passenger compartment and the battery in a high-temperature working condition, at this time, the heating circuit does not work, that is, the first three-way valve 27 is controlled to be closed, and the refrigerant circuit, the electric drive circuit, and the battery circuit work; the refrigerant circuit is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, the heat carried by the refrigerant of the condenser is blown to the environment by the fan 10 to realize heat exchange, and then the refrigerant is divided into two paths, one path enters the first refrigerant expansion valve 4, is throttled and pressure-reduced, and then enters the passenger compartment air evaporator 5, the cold air of the passenger compartment air evaporator 5 is blown to the passenger compartment by the air conditioner blower 20, and the other path enters the second refrigerant expansion valve 7, is throttled and pressure-reduced, and then enters the battery heat exchanger 8, after heat exchange between the battery heat exchanger 8 and the water of the battery circuit, the water flowing out of the battery heat exchanger 8 is mixed with the refrigerant flowing out of the passenger compartment air evaporator 5 through the first temperature and pressure sensor 6, and then returns to the electric compressor 1; the battery circuit is as follows: the water of the battery heat exchanger 8 enters the second water pump 29, flows out of the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out of the sixth port (B port), enters the battery 31, exchanges heat with the battery 31, flows out of the battery 31, and returns to the battery heat exchanger 8; the electric drive circuit is as follows: the water of the motor radiator 11 enters the automatic driving controller 14 and the rear electric drive 16 through the first one-way valve 12, respectively, the antifreeze entering the automatic driving controller 14 first enters the front electric drive 15, the antifreeze flowing out of the front electric drive 15 is mixed with the antifreeze flowing out of the rear electric drive 16, and then enters the four-way valve 17, enters the fourth port (A port) of the four-way valve 17, flows out of the fifth port (C port), enters the first water pump 18, flows out of the first water pump 18, enters the second three-way valve 19, enters the eighth port (C port) of the second three-way valve 19, flows out of the ninth port (B port), and then enters the motor radiator 11, which is only an example.

[0091] As shown in FIG. 5, the current thermal management requirement is the third thermal management requirement, that is, when the battery is in the fast charging state under the high temperature working condition, the heating circuit and the electric drive circuit do not work, and the refrigerant circuit and the battery circuit work, that is, the first three-way valve 27 is controlled to be closed, the fourth port and the fifth port of the four-way valve 17 are connected and closed, the sixth port and the seventh port are connected and conducted, the first refrigerant expansion valve 4 is controlled to be closed, and the second refrigerant expansion valve 7 is conducted; the refrigerant circuit state is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, the heat carried by the refrigerant of the condenser is blown to the environment by the fan 10 to realize heat exchange, then enters the second refrigerant expansion valve 7, throttles and depressurizes, then enters the battery heat exchanger 8, and after heat exchange between the battery heat exchanger 8 and the water of the battery circuit, flows out of the battery heat exchanger 8 and returns to the electric compressor 1, at this time the first refrigerant expansion valve 4 is in a completely closed state; the battery circuit state is as follows: the water outlet of the battery heat exchanger 8 enters the second water pump 29, flows out of the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out of the sixth port (B port), enters the battery 31, exchanges heat with the battery 31, flows out of the battery 31, returns to the battery heat exchanger 8, and only serves as an example.

[0092] As shown in FIG. 6, the current thermal management requirement is the fourth thermal management requirement, that is, the thermal management is in the normal temperature working condition, and the passenger compartment is refrigerated and the battery is heated, at this time, the refrigerant circuit, the heating circuit, the electric drive circuit and the battery circuit are all in working state, that is, the first port and the third port of the first three-way valve 27 are controlled to be conductive, the fourth port and the fifth port of the four-way valve 17 are connected and conductive, the sixth port and the seventh port are connected and conductive, the first refrigerant expansion valve 4 is controlled to be conductive, and the second refrigerant expansion valve 7 is closed; the refrigerant circuit state is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, and the heat carried by the refrigerant of the condenser is blown to the environment by the fan 10 to realize heat exchange, then the refrigerant enters the first refrigerant expansion valve 4, is throttled and pressure-reduced, enters the passenger compartment air evaporator 5, and the cold air of the passenger compartment air evaporator 5 is blown to the passenger compartment by the air conditioner blower 20, and then returns to the electric compressor 1; the heating circuit state is as follows: the water heating device 25 (water heating PTC) discharges water into the third water pump 26, and the water flowing out of the third water pump 26 enters the first three-way valve 27 from the first port (B port), and the third port (A port) flows out and enters the second water pump 29, and the water flowing out of the second water pump 29 enters the four-way valve 17 from the seventh port (D port), and the sixth port (B port) flows out and enters the battery 31, and after heat exchange in the battery 31, the water flows out of the battery 31, passes through the second check valve 32, and returns to the water heating PTC; the electric drive circuit state is as follows: the water discharged from the motor radiator 11 enters the automatic driving controller 14 and the rear electric drive 16 through the first check valve 12, and the antifreeze liquid entering the automatic driving controller 14 will first enter the front electric drive 15, and the antifreeze liquid flowing out of the front electric drive 15 and the antifreeze liquid flowing out of the rear electric drive 16 are mixed and enter the four-way valve 17 from the fourth port (A port) of the four-way valve 17, and the fifth port (C port) flows out and enters the first water pump 18, and the water flowing out of the first water pump 18 enters the second three-way valve 19 from the eighth port (C port) of the second three-way valve 19, and the ninth port (B port) flows out and enters the motor radiator 11, which is only an example.

[0093] As shown in FIG. 7, if the current thermal management requirement is the fifth thermal management requirement, that is, the system is in the normal temperature working condition, the passenger compartment is in refrigeration, and the battery is in the passive heating scene, at this time the heating circuit does not work, the refrigerant circuit, the electric drive circuit and the battery circuit work, the first three-way valve 27 is controlled to be closed, the fourth port and the sixth port of the four-way valve 17 are connected and conducted, the fifth port and the seventh port are connected and conducted, the first refrigerant expansion valve 4 is controlled to be conducted, and the second refrigerant expansion valve 7 is controlled to be closed; the refrigerant circuit state is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, after heat exchange, the refrigerant enters the first refrigerant expansion valve 4, after throttling and pressure reduction, enters the passenger compartment air evaporator 5, exchanges heat with air, and then returns to the electric compressor 1; the electric drive circuit and the battery circuit state are as follows: the water outlet of the motor radiator 11 enters the automatic driving controller 14 and the rear electric drive 16 through the first check valve 12, the antifreeze in the automatic driving controller 14 enters the front electric drive 15 first, the antifreeze flowing out of the front electric drive 15 mixes with the antifreeze flowing out of the rear electric drive 16, enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the sixth port (B port), exchanges heat with the battery 31, flows out, enters the battery heat exchanger 8, flows out from the battery heat exchanger 8, enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the fifth port (C port), flows out, enters the first water pump 18, flows out from the first water pump 18, enters the second three-way valve 19 from the eighth port (C port) of the second three-way valve 19, flows out from the ninth port (B port), flows out, enters the motor radiator 11, which is only an example.

[0094] As shown in FIG. 8, if the current thermal management requirement is the sixth thermal management requirement, that is, the system is in a normal temperature working condition, when the battery is in refrigeration and the passenger compartment is in heating, at this time, the refrigerant circuit, the heating circuit, the electric drive circuit and the battery circuit are all in working state, the first port and the second port of the first three-way valve 27 are controlled to be connected and conducted, the fourth port and the fifth port of the four-way valve 17 are connected and conducted, the sixth port and the seventh port are connected and conducted, the first refrigerant expansion valve 4 is controlled to be closed, and the second refrigerant expansion valve 7 is controlled to be conducted; the refrigerant circuit state is as follows: the electric compressor 1 discharges high-temperature and high-pressure refrigerant into the condenser 3, after heat exchange, the second refrigerant expansion valve 7, throttling and pressure reduction, enters the battery heat exchanger 8, after heat exchange between the battery heat exchanger 8 and the battery circuit water, the battery heat exchanger 8 flows out, and returns to the electric compressor 1; the battery circuit state is as follows: the battery heat exchanger 8 water enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the sixth port (B port), enters the battery 31, exchanges heat with the battery 31, and flows out from the battery 31, returns to the battery heat exchanger 8; the electric drive circuit state is as follows: the motor radiator 11 water enters the automatic driving controller 14 and the rear electric drive 16 through the first check valve 12, the antifreeze entering the automatic driving controller 14 first enters the front electric drive 15, the antifreeze flowing out from the front electric drive 15 mixes with the antifreeze flowing out from the rear electric drive 16, enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the fifth port (C port), enters the first water pump 18, flows out from the first water pump 18, enters the second three-way valve 19 from the eighth port (C port) of the second three-way valve 19, flows out from the ninth port (B port), and enters the motor radiator 11 after flowing out; the heating circuit state is as follows: the water heating PTC water enters the third water pump 26, flows out from the third water pump 26, enters the first three-way valve 27 from the first port (B port) of the first three-way valve 27, flows out from the second port (C port), enters the heating device 28 (heating core), and the air conditioner blower 20 blows the hot air of the heating device 28 to the passenger compartment, and the water enters the water heating PTC after flowing out from the heating core, only as an example.

[0095] As shown in FIG. 9, when the battery is in the uniform temperature scene under the normal temperature working condition of the system, at this time the refrigerant circuit and the heating circuit do not work, the electric drive circuit and the battery circuit are in the working state, the first refrigerant expansion valve 4 and the second refrigerant expansion valve 7 are controlled to be closed, the first three-way valve is closed, the fourth port and the fifth port of the four-way valve are connected and conducted, and the sixth port and the seventh port are connected and conducted; the electric drive circuit is in the following state: the water outlet of the motor radiator 11 passes through the first one-way valve 12 and enters the automatic driving controller 14 and the rear electric drive 16 respectively, the anti-freezing liquid passing through the automatic driving controller 14 enters the front electric drive 15, the anti-freezing liquid flowing out of the front electric drive 15 is mixed with the anti-freezing liquid flowing out of the rear electric drive 16, and then enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the fifth port (C port), enters the first water pump 18, and then flows out from the first water pump 18, enters the second three-way valve 19 from the eighth port (C port) of the second three-way valve 19, flows out from the ninth port (B port), and then enters the motor radiator 11; the battery circuit is in the following state: the water outlet of the battery heat exchanger 8 enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the sixth port (B port), enters the battery 31, exchanges heat with the battery 31, flows out from the battery 31, and returns to the battery heat exchanger 8, which is only an example.

[0096] As shown in FIG. 10, if the current thermal management requirement is the seventh thermal management requirement, the first three-way valve 27 is controlled to be closed, the fourth port and the sixth port of the four-way valve 17 are connected and conducted, the fifth port and the seventh port are connected and conducted, the first refrigerant expansion valve 4 and the second refrigerant expansion valve 7 are controlled to be closed; the electric drive circuit and the battery circuit are in the following state: the water outlet of the motor radiator 11 passes through the first one-way valve 12 and enters the automatic driving controller 14 and the rear electric drive 16 respectively, the anti-freezing liquid passing through the automatic driving controller 14 enters the front electric drive 15, the anti-freezing liquid flowing out of the front electric drive 15 is mixed with the anti-freezing liquid flowing out of the rear electric drive 16, and then enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the sixth port (B port), enters the battery 31, exchanges heat with the battery 31, flows out, enters the battery heat exchanger 8, flows out from the battery heat exchanger 8, enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the fifth port (C port), enters the first water pump 18 from the fifth port (C port), flows out from the first water pump 18, enters the three-way valve 19 from the eighth port (C port) of the three-way valve 19, flows out from the tenth port (A port), enters the automatic driving controller 14 and the rear electric drive 16, which is only an example.

[0097] As shown in FIG. 11, if the current thermal management requirement is the eighth thermal management requirement, the first port, the second port and the third port of the first three-way valve 27 are controlled to be connected, the fourth port and the fifth port of the four-way valve 17 are controlled to be connected, the sixth port and the seventh port of the four-way valve 17 are controlled to be connected, the first refrigerant expansion valve 4 and the second refrigerant expansion valve 7 are controlled to be closed; that is, when the battery and the passenger compartment are in a heating scene in the low-temperature working condition of the system, the refrigerant circuit does not work, the heating circuit, the electric drive circuit and the battery circuit work; at this time, the battery circuit and the heating circuit are connected in parallel, and the state is as follows: the water heating PTC outlet water enters the third water pump 26, flows out from the third water pump 26, enters the first three-way valve 27 from the first port (B port) of the first three-way valve 27, flows out from the second port (C port) and the third port (A port) respectively, and the flow-out ratio is dynamically adjusted based on the system requirement; one way flows out and enters the heating core, and then flows out from the heating core and enters the water heating PTC; the other way flows out and enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the sixth port (B port), enters the battery 31 after heat exchange with the battery 31, and then flows out from the second one-way valve 32, mixes with the heating core, and then enters the water heating PTC; the state of the electric drive circuit is as follows: the motor radiator 11 outlet water flows into the automatic driving controller 14 and the rear electric drive 16 through the first one-way valve 12, the antifreeze entering the automatic driving controller 14 first enters the front electric drive 15, the antifreeze flowing out from the front electric drive 15 mixes with the antifreeze flowing out from the rear electric drive 16, enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the fifth port (C port), enters the first water pump 18, flows out from the first water pump 18, enters the three-way valve 19 from the eighth port (C port) of the three-way valve 19, flows out from the ninth port (B port), enters the motor radiator 11, and only serves as an example.

[0098] As shown in FIG. 12, if the current thermal management requirement is the ninth thermal management requirement, that is, the system is in a low-temperature working condition, when the battery and the passenger compartment are in a heating scene, the system can utilize the electric drive waste heat, at this time, the refrigerant circuit does not work, the heating circuit partially works, and the electric drive circuit and the battery circuit work; the second port and the third port of the first three-way valve 27 are controlled to be connected and conductive, the fourth port and the sixth port of the four-way valve 17 are controlled to be connected and conductive, the fifth port and the seventh port are connected, the first refrigerant expansion valve 4 and the second refrigerant expansion valve 7 are controlled to be closed; the heating circuit, the electric drive circuit and the battery circuit are connected in series to form one circuit; the circuit state is as follows: the front and rear electric drive outlet water enters the four-way valve 17 from the fourth port (A port) of the four-way valve 17, flows out from the sixth port (B port), enters the battery 31 after flowing out, enters the heater core after flowing out from the battery 31 and passing through the second one-way valve 32, flows out after heat exchange with air in the heater core, enters the second port (C port) of the first three-way valve 27, flows out from the third port (A port) of the first three-way valve 27, enters the second water pump 29, flows out from the second water pump 29, enters the four-way valve 17 from the seventh port (D port) of the four-way valve 17, flows out from the fifth port (C port), enters the first water pump 18 after flowing out, enters the second three-way valve 19 from the first water pump 18, flows out from the eighth port (C port) of the second three-way valve 19, enters the automatic driving controller 14 and the rear electric drive 16, which is only an example.

[0099] The thermal management system and method designed in the application connects the battery, the electric drive and the heater core in series and parallel through the four-way valve and the three-way valve, and based on different scene requirements, the electric drive waste heat can heat the battery and the passenger compartment.

[0100] Referring to FIG. 13, FIG. 13 is a structural schematic diagram of a computer device according to an optional embodiment of the application. As shown in FIG. 13, the computer device includes one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components communicate and connect with each other by using different buses, and can be installed on a common mainboard or in other manners as needed. The processor can process instructions executed in the computer device, including instructions stored in the memory or graphics information of the memory to display a GUI on an external input / output device such as a display device coupled to the interface. In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple storage devices. Also, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). In FIG. 13, one processor 10 is taken as an example.

[0101] The processor 10 can be a central processing unit, a network processing unit, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a generic array logic, or any combination thereof.

[0102] The memory 20 stores instructions executable by the at least one processor 10 to cause the at least one processor 10 to perform the method of the above embodiments.

[0103] The memory 20 can include a program storage area and a data storage area. The program storage area can store an operating system and application programs required by at least one function. The data storage area can store data created according to the use of the computer device, and the like. In addition, the memory 20 can include a high-speed random access memory, and can further include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some alternative embodiments, the memory 20 can optionally include a memory disposed remotely from the processor 10, which can be connected to the computer device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0104] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid state disk. The memory 20 can further include a combination of the above-mentioned types of memories.

[0105] The computer device further includes an input device 50 and an output device 40. The processor 10, the memory 20, the input device 50, and the output device 40 can be connected through a bus or other means, and are connected through a bus in FIG. 13 as an example.

[0106] The input device 50 can receive inputted digital or character information, and generate key signal inputs related to the user settings and function controls of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, and the like. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), and the like. The display device includes, but is not limited to, a liquid crystal display, a light emitting diode, a display, and a plasma display. In some alternative embodiments, the display device can be a touch screen.

[0107] The embodiments of the present application also provide a vehicle, as shown in FIG. 14, which includes a thermal management system and a controller that performs the thermal management method of the above embodiments.

[0108] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or be implemented as computer codes stored in a remote storage medium or a non-transitory machine readable storage medium and stored in a local storage medium to be downloaded through a network, so that the method described herein can be processed by such software on a storage medium using a general computer, a special processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer codes, when the software or computer codes are accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0109] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

A thermal management system comprising an electric drive circuit, a battery circuit and a heating circuit, characterized in that The heat management system further comprises a first three-way valve and a four-way valve, wherein, a first port of the first three-way valve is connected with the heating circuit, a second port is connected with a heating device of a passenger cabin of a vehicle to which the heat management system belongs, and a third port is connected with the battery circuit, for adjusting the connection relationship among the heating circuit, the heating device, and the battery circuit; fourth and fifth ports of the four-way valve are connected with the electric drive circuit, sixth and seventh ports are connected with the battery circuit, for adjusting the connection relationship between the battery circuit and the electric drive circuit. The system of claim 1, wherein The heat management system further comprises a refrigerant circuit, which at least comprises a condenser, a first refrigerant expansion valve, a passenger cabin air evaporator, and a second refrigerant expansion valve, and the battery circuit at least comprises a battery heat exchanger, wherein, the first refrigerant expansion valve is arranged on a pipeline connecting an outlet of the condenser with an inlet of the passenger cabin air evaporator, for controlling the refrigerant discharged from the condenser to enter the passenger cabin air evaporator; the second refrigerant expansion valve has one end connected with the outlet of the condenser and the other end connected with the battery heat exchanger of the battery circuit, for controlling the refrigerant discharged from the refrigerant circuit to enter the battery heat exchanger of the battery circuit. The system of claim 1, wherein The heating circuit at least comprises a water heating device and a third water pump, and the battery circuit at least further comprises a second water pump and a battery, wherein, the first port of the first three-way valve is connected with the water heating device through the third water pump, the second port is connected with an inlet of the heating device, and the third port is connected with the battery through the second water pump. The system according to claim 1 or 3, characterized in that The heat management system at least further comprises a one-way valve, the electric drive circuit at least comprises a motor radiator, a front electric drive, a rear electric drive, and a first water pump, and the battery circuit at least further comprises a battery and a second water pump, wherein, the fourth port of the four-way valve is connected with the motor radiator through the front electric drive and the rear electric drive respectively, the fifth port is connected with the motor radiator through the first water pump, the sixth port is connected with the battery, and the seventh port is connected with the second water pump; the inlet of the one-way valve is connected with the battery, and the outlet of the one-way valve is connected with the heating device. The system according to claim 4, characterized in that The electric drive circuit at least further comprises a temperature acquisition device and a second three-way valve, wherein, the temperature acquisition device is arranged at an outlet end of the motor radiator, for acquiring the temperature of the heat emitted by the motor radiator; an eighth port of the second three-way valve is connected with the first water pump, a ninth port is connected with an inlet of the motor radiator, and a tenth port is connected with the temperature acquisition device, for adjusting the flow direction of the heat emitted by the motor radiator. The system of claim 1, wherein The first three-way valve is a three-way proportional valve. A thermal management method, characterized in that, The method is applied to the heat management system of any one of claims 1-6, and the method comprises: acquiring the operating state, temperature of the current battery, and temperature of the current passenger cabin in the vehicle; determining the battery temperature demand based on the operating state of the current battery, and determining the current heat management demand based on the relationship between the temperature of the current battery and the battery temperature demand and the relationship between the temperature of the current passenger cabin and the temperature demand of the passenger cabin by the user; The port conduction states of the first three-way valve and the four-way valve are controlled based on the current thermal management requirement, and the working state of the thermal management system is changed to meet the current thermal management requirement. The method of claim 7, wherein The current thermal management requirement is determined based on a relationship between a current battery temperature and a battery temperature requirement and a relationship between a current passenger compartment temperature and a user's temperature requirement for the passenger compartment, including: If the current battery temperature is within the battery temperature requirement range, but the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be a first thermal management requirement in which the refrigerant circuit cools the passenger compartment, or If the current battery temperature is greater than the battery temperature requirement range, and the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be a second thermal management requirement in which the refrigerant circuit cools the passenger compartment and the battery, or If the current battery temperature is greater than the battery temperature requirement range, the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, and the battery is in a fast charging state, the current thermal management requirement is determined to be a third thermal management requirement in which the refrigerant circuit cools the battery, or If the current battery temperature is lower than the battery temperature requirement range, but the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be a fourth thermal management requirement in which the refrigerant circuit cools the passenger compartment and the heating circuit heats the battery, or If the current battery temperature is in a passive heating state, and the current passenger compartment temperature is greater than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be a fifth thermal management requirement in which the refrigerant circuit cools the passenger compartment and the electric drive circuit heats the battery, or If the current battery temperature is greater than the battery temperature requirement range, and the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be a sixth thermal management requirement in which the refrigerant circuit cools the battery and the heating circuit heats the passenger compartment, or If the current battery temperature is lower than the battery temperature requirement range, the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, and the battery is in a fast charging state, the current thermal management requirement is determined to be a seventh thermal management requirement in which the electric drive circuit heats the battery, or If the current battery temperature is lower than the battery temperature requirement range, and the current passenger compartment temperature is lower than the user's temperature requirement for the passenger compartment, the current thermal management requirement is determined to be an eighth thermal management requirement in which the heating circuit heats the passenger compartment and the battery, or If the current battery and the passenger compartment are in an electric drive waste heat heating scene, the current thermal management requirement is determined to be a ninth thermal management requirement in which the electric drive circuit heats the passenger compartment and the battery. The method of claim 8, wherein The port conduction states of the first three-way valve and the four-way valve are controlled based on the current thermal management requirement, and the working state of the thermal management system is changed to meet the current thermal management requirement. If the current thermal management requirement is the first thermal management requirement or the second thermal management requirement or the third thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the fifth port of the four-way valve are controlled to be closed, and the sixth port and the seventh port are controlled to be connected and conductive; If the current thermal management requirement is the fourth thermal management requirement, the first port and the third port of the first three-way valve are controlled to be conductive, the fourth port and the fifth port of the four-way valve are controlled to be connected and conductive, and the sixth port and the seventh port are controlled to be connected and conductive; If the current thermal management requirement is the fifth thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are connected to be conducted, and the fifth port and the seventh port are connected to be conducted; If the current thermal management requirement is the sixth thermal management requirement, the first port and the second port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are connected to be conducted, and the sixth port and the seventh port are connected to be conducted; If the current thermal management requirement is the seventh thermal management requirement, the first three-way valve is controlled to be closed, the fourth port and the sixth port of the four-way valve are connected to be conducted, and the fifth port and the seventh port are connected to be conducted; If the current thermal management requirement is the eighth thermal management requirement, the first port, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the fifth port of the four-way valve are connected to be conducted, and the sixth port and the seventh port are connected to be conducted; If the current thermal management requirement is the ninth thermal management requirement, the second port and the third port of the first three-way valve are controlled to be conducted, the fourth port and the sixth port of the four-way valve are connected to be conducted, and the fifth port and the seventh port are connected to be conducted. The method according to claim 8, characterized in that, If the current thermal management requirement is the first thermal management requirement or the fourth thermal management requirement or the fifth thermal management requirement, the first refrigerant expansion valve is controlled to be conducted, and the second refrigerant expansion valve is controlled to be closed; If the current thermal management requirement is the second thermal management requirement, the first refrigerant expansion valve is controlled to be conducted, and the second refrigerant expansion valve is controlled to be conducted; If the current thermal management requirement is the third thermal management requirement or the sixth thermal management requirement, the first refrigerant expansion valve is controlled to be closed, and the second refrigerant expansion valve is controlled to be conducted. The method according to claim 7, characterized in that The method further comprises: determining whether the temperature of heat emitted by the motor radiator is lower than the ambient temperature; If the temperature of heat emitted by the motor radiator is lower than the ambient temperature, the eighth port and the tenth port of the second three-way valve are controlled to be conducted, so that the heat emitted by the motor radiator flows into the automatic driving controller and the rear electric drive; If the temperature of heat emitted by the motor radiator is not lower than the ambient temperature, the eighth port and the ninth port of the second three-way valve are controlled to be conducted, so that the heat emitted by the motor radiator flows into the motor radiator. A computer device, characterized in that, comprise: a memory and a processor, which are in communication connection with each other, and the memory stores computer instructions, and the processor executes the computer instructions to perform the thermal management method according to any one of claims 7 to 11. A vehicle characterized by comprising: The vehicle comprises the thermal management system and the controller according to any one of claims 1 to 6, and the controller is used to perform the thermal management method according to any one of claims 7 to 11. A computer-readable storage medium, characterized by The computer readable storage medium stores computer instructions, and the computer instructions are used to make the computer execute the thermal management method according to any one of claims 7 to 11.

Images