Thermal management system, vehicle, control method and medium

Abstract

The application relates to the technical field of thermal management, in particular to a thermal management system, a vehicle, a control method and a medium, wherein the method comprises: a battery loop, an electric drive loop, a warm air loop and an air conditioning loop; a heat exchange assembly, wherein the heat exchange assembly is connected with the battery loop, the electric drive loop, the warm air loop and the air conditioning loop respectively; and a controller, which is used for, when a cooling demand is identified, controlling the heat exchange assembly to conduct the air conditioning loop and the battery loop and the electric drive loop, and utilizing the air conditioning loop to cool the battery loop and the electric drive loop, and for, when a heating demand is identified, controlling the heat exchange assembly to conduct at least two loops of the battery loop, the electric drive loop and the warm air loop, and utilizing the heat between the loops to heat each other. Therefore, the problems of low working efficiency, poor stability and reduced vehicle mileage caused by heating the power battery or the electric drive through a water heating heater or utilizing the air conditioning system to heat or cool in the related art are solved.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and in particular to a thermal management system, vehicle, control method and medium. Background Technology

[0002] The power batteries of pure electric vehicles have high requirements for operating temperature. When the ambient temperature is low, there are problems such as low discharge power and inability to charge normally. Under low temperature conditions, the performance of the battery system degrades severely, the discharge rate is greatly reduced, and it cannot output enough power to drive the motor to work normally. When the ambient temperature is too high, the internal chemical reaction of the power battery intensifies, which poses a risk of abnormal operation and even fire or explosion.

[0003] In related technologies, battery thermal management systems mainly use PTC to heat the power battery, or connect the battery system in series with the air conditioning system for heating and cooling. Under some operating conditions, the system has low efficiency and poor stability, which will reduce the vehicle's driving range and result in a poor user experience. Summary of the Invention

[0004] This application provides a thermal management system, vehicle, control method, and medium to solve the problems in related technologies, such as low efficiency, poor stability, and reduced vehicle range caused by heating the power battery or electric drive by a water heater or by using an air conditioning system for heating or cooling.

[0005] A first aspect of this application provides a thermal management system, including: a battery circuit, an electric drive circuit, a heating circuit, and an air conditioning circuit; a heat exchange assembly, wherein the heat exchange assembly is connected to the battery circuit, the electric drive circuit, the heating circuit, and the air conditioning circuit respectively, wherein the heat exchange assembly includes a first five-way valve and a second five-way valve, wherein one end of the battery circuit is connected to the first port of the first five-way valve, and the other end of the battery circuit is connected to the first port of the second five-way valve; the fifth port of the first five-way valve is connected to the second port of the second five-way valve through a heat exchanger; one end of the electric drive circuit is connected to the fourth port of the first five-way valve, and the other end of the battery circuit is connected to the third port of the second five-way valve; the third port of the first five-way valve is connected to the fifth port of the second five-way valve through a pipeline; one end of the heating circuit is connected to the second port of the first five-way valve, and the heating circuit... The other end of the circuit is connected to the fourth port of the second five-way valve via a radiator; the controller is used to control the heat exchange component to connect the air conditioning circuit, the battery circuit, and the electric drive circuit when a cooling demand is detected, so as to use the air conditioning circuit to cool the battery circuit and the electric drive circuit, and to control the heat exchange component to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit when a heating demand is detected, so as to use the heat between the circuits to heat each other. The thermal management system also includes: a radiator and a heat exchanger, wherein one end of the radiator is connected to the heating circuit, the third port of the first five-way valve, and the fifth port of the second five-way valve via a pipe, and the other end is connected to the fourth port of the second five-way valve via a pipe; the heat exchanger is connected to the second port of the first five-way valve, the second port of the second five-way valve, the third electronic expansion valve, the first two-way valve, and the sixth two-way valve via pipes.

[0006] Optionally, the battery circuit includes a power battery and a battery water pump, wherein one end of the power battery is connected to the battery water pump via a pipeline, and the other end is connected to the first port of a first five-way valve via a pipeline, and the other end of the battery water pump is connected to the first port of a second five-way valve via a pipeline.

[0007] Optionally, the electric drive circuit includes an electric drive and an electric water pump, wherein one end of the electric drive is connected to the electric water pump via a pipeline, and the other end is connected to the third port of a first five-way valve via a pipeline, and the other end of the electric water pump is connected to the third port of a second five-way valve via a pipeline.

[0008] Optionally, the heating circuit includes: a heating water pump, a heating core, and a water heater. One end of the heating water pump is connected to a fourth two-way valve via a pipe, and the other end is connected to a water-cooled condenser and the fifth port of a first five-way valve via a pipe. The other end of the fourth two-way valve is connected to the heating core via a pipe. The other end of the heating core is connected to a radiator and a water heater via a pipe. The other end of the water heater is connected to the water-cooled condenser, and the other end of the radiator is connected to the fourth port of a second five-way valve.

[0009] Optionally, the air conditioning circuit includes: a compressor, a gas-liquid separator, a water-cooled condenser, a condenser, and an evaporator. One end of the compressor is connected to the water-cooled condenser via a pipe, and the other end is connected to the gas-liquid separator. One end of the water-cooled condenser is connected to a water heater, a warm air pump, a third two-way valve, and a fifth two-way valve via a pipe. The other end of the third two-way valve is connected to a first one-way valve via a pipe. One end of the fifth two-way valve is connected to a first electronic expansion valve and a seventh two-way valve via a pipe. The other end of the first electronic expansion valve is connected to the condenser via a pipe. One end of the condenser is connected to a first one-way valve and a second two-way valve via a pipe. The other end of the valve is connected to the second electronic expansion valve, the third two-way valve, and the third electronic expansion valve via a pipeline; one end of the second electronic expansion valve is connected to the evaporator, one end of the evaporator is connected to the first two-way valve, the other end of the first two-way valve is connected to the sixth two-way valve and the heat exchanger, the other end of the sixth two-way valve is connected to the gas-liquid separator and the second check valve, the other end of the gas-liquid separator is connected to the compressor, one end of the second check valve is connected to the second two-way valve, one end of the second two-way valve is connected to the first check valve, the other end of the third electronic expansion valve is connected to the heat exchanger, the other end of the heat exchanger is connected to the sixth two-way valve, and one end of the seventh two-way valve is connected to the first two-way valve.

[0010] A second aspect of this application provides a vehicle including a thermal management system as described in the above embodiments.

[0011] A third aspect of this application provides a control method for a thermal management system, which is applied to the thermal management system described above. The method includes the following steps: identifying the user's actual needs; when a cooling demand is identified, controlling the heat exchange component to connect the air conditioning circuit with the battery circuit and the electric drive circuit, and using the air conditioning circuit to cool the battery circuit and the electric drive circuit; when a heating demand is identified, controlling the heat exchange component to connect at least two circuits of the battery circuit, the electric drive circuit, and the heating circuit, and using the heat between the circuits to heat each other.

[0012] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to perform a control method for a thermal management system as described in the above embodiments.

[0013] Therefore, this application has at least the following beneficial effects:

[0014] This application embodiment can control the heat exchange component to connect the air conditioning circuit, the battery circuit, and the electric drive circuit when a cooling demand is detected, using the air conditioning circuit to cool the battery circuit and the electric drive circuit. When a heating demand is detected, the heat exchange component can control the heat exchange component to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit, using the heat between the circuits to heat each other. The corresponding circuits are then connected through two five-way valves in the heat exchange component to meet all user needs. This reduces energy consumption while ensuring that the battery and passenger compartment are at a suitable temperature, improving driving comfort and extending battery range and lifespan.

[0015] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 This is a block diagram of a thermal management system provided according to an embodiment of this application;

[0018] Figure 2 This is an overall schematic diagram of the thermal management system provided according to an embodiment of this application;

[0019] Figure 3 This is a flowchart of a control method for a thermal management system provided according to an embodiment of this application. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0021] The following description, with reference to the accompanying drawings, describes a thermal management system, vehicle, control method, and medium according to embodiments of this application. Addressing the problems mentioned in the background section regarding the low efficiency, poor stability, and reduced vehicle range resulting from heating the power battery or electric drive using a water heater or utilizing an air conditioning system for heating or cooling, as well as the poor user experience, this application provides a thermal management system. In this system, upon detecting a cooling demand, the heat exchange component is controlled to connect the air conditioning circuit to the battery circuit and the electric drive circuit, using the air conditioning circuit to cool the battery circuit and the electric drive circuit. Upon detecting a heating demand, the heat exchange component is controlled to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit, utilizing the heat between the circuits to heat each other. This is achieved by connecting the corresponding circuits through two five-way valves in the heat exchange component, satisfying all user needs. This reduces energy consumption while ensuring the battery and passenger compartment are at a suitable temperature, improving driving comfort and extending battery range and lifespan. Therefore, this solves the problems of low efficiency, poor stability, and reduced vehicle range associated with heating the power battery or electric drive using a water heater or utilizing an air conditioning system for heating or cooling in the related technologies.

[0022] Specifically, Figure 1 This is a block diagram of the thermal management system according to an embodiment of this application.

[0023] like Figure 1 As shown, the thermal management system 10 includes: a battery circuit 100, an electric drive circuit 200, a heating circuit 300, an air conditioning circuit 400, a heat exchange component 500, and a controller 600.

[0024] The heat exchange component 500 is connected to the battery circuit 100, the electric drive circuit 200, the heating circuit 300, and the air conditioning circuit 400, respectively. The controller 600 is used to control the heat exchange component 500 to connect the air conditioning circuit 400 to the battery circuit 100 and the electric drive circuit 200 when a cooling demand is detected, so as to use the air conditioning circuit 400 to cool the battery circuit 100 and the electric drive circuit 200. When a heating demand is detected, the controller 600 controls the heat exchange component 500 to connect at least two circuits of the battery circuit 100, the electric drive circuit 200, and the heating circuit 300, so as to use the heat between the circuits to heat each other.

[0025] It is understood that, upon detecting a cooling demand, the embodiments of this application can control the heat exchange component to connect the air conditioning circuit, the battery circuit, and the electric drive circuit, using the air conditioning circuit to cool the battery circuit and the electric drive circuit. Upon detecting a heating demand, the heat exchange component can control the heat exchange component to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit, using the heat between the circuits to heat each other. The corresponding circuits are then connected through two five-way valves in the heat exchange component, satisfying all user needs, improving overall work efficiency, system stability, and vehicle range, and enhancing the user experience.

[0026] In the embodiments of this application, such as Figure 2 As shown, the heat exchange assembly 500 includes: a first five-way valve and a second five-way valve.

[0027] Among them, one end of the battery circuit 100 is connected to the first port of the first five-way valve, and the other end of the battery circuit 100 is connected to the first port of the second five-way valve; the fifth port of the first five-way valve is connected to the second port of the second five-way valve through a heat exchanger; one end of the electric drive circuit 200 is connected to the fourth port of the first five-way valve, and the other end of the battery circuit 200 is connected to the third port of the second five-way valve; the third port of the first five-way valve is connected to the fifth port of the second five-way valve through a pipeline; one end of the heating circuit 300 is connected to the second port of the first five-way valve, and the other end of the heating circuit 300 is connected to the fourth port of the second five-way valve through a radiator.

[0028] In the embodiments of this application, such as Figure 2 As shown, it also includes: radiators and heat exchangers.

[0029] One end of the radiator is connected to the heating circuit, the third port of the first five-way valve, and the fifth port of the second five-way valve via a pipe, and the other end is connected to the fourth port of the second five-way valve via a pipe; the heat exchanger is connected to the second port of the first five-way valve, the second port of the second five-way valve, the third electronic expansion valve, the first two-way valve, and the sixth two-way valve via pipes.

[0030] In the embodiments of this application, such as Figure 2 As shown, the battery circuit 100 includes a power battery and a battery water pump. One end of the power battery is connected to the battery water pump through a pipeline, and the other end is connected to the first port of a first five-way valve through a pipeline. The other end of the battery water pump is connected to the first port of a second five-way valve through a pipeline.

[0031] In the embodiments of this application, such as Figure 2 As shown, the electric drive circuit 200 includes an electric drive and an electric drive water pump.

[0032] One end of the electric drive is connected to the electric water pump via a pipeline, and the other end is connected to the third port of the first five-way valve via a pipeline. The other end of the electric water pump is connected to the third port of the second five-way valve via a pipeline.

[0033] In the embodiments of this application, such as Figure 2 As shown, the heating circuit 300 includes: a heating water pump, a heating core, and a water heater.

[0034] One end of the warm air pump is connected to the fourth two-way valve via a pipe, and the other end is connected to the water-cooled condenser and the fifth port of the first five-way valve via a pipe. The other end of the fourth two-way valve is connected to the warm air core via a pipe. The other end of the warm air core is connected to the radiator and the water heater via a pipe. The other end of the water heater is connected to the water-cooled condenser, and the other end of the radiator is connected to the fourth port of the second five-way valve.

[0035] In the embodiments of this application, such as Figure 2 As shown, the air conditioning circuit 400 includes: a compressor, a gas-liquid separator, a water-cooled condenser, a condenser, and an evaporator.

[0036] The compressor is connected at one end to a water-cooled condenser via a pipeline, and at the other end to a gas-liquid separator. One end of the water-cooled condenser is connected via a pipeline to a water heater, a warm air pump, a third two-way valve, and a fifth two-way valve; the other end of the third two-way valve is connected via a pipeline to a first one-way valve. One end of the fifth two-way valve is connected via a pipeline to a first electronic expansion valve and a seventh two-way valve; the other end of the first electronic expansion valve is connected via a pipeline to the condenser; one end of the condenser is connected via a pipeline to a first one-way valve and a second two-way valve; the other end of the first one-way valve is connected via a pipeline to a second electronic expansion valve. The system includes a valve, a third two-way valve, and a third electronic expansion valve; one end of the second electronic expansion valve is connected to the evaporator, one end of the evaporator is connected to the first two-way valve, the other end of the first two-way valve is connected to the sixth two-way valve and the heat exchanger, the other end of the sixth two-way valve is connected to the gas-liquid separator and the second check valve, the other end of the gas-liquid separator is connected to the compressor, one end of the second check valve is connected to the second two-way valve, one end of the second two-way valve is connected to the first check valve, the other end of the third electronic expansion valve is connected to the heat exchanger, the other end of the heat exchanger is connected to the sixth two-way valve, and one end of the seventh two-way valve is connected to the first two-way valve.

[0037] Specifically, depending on different needs, the corresponding ports of the first five-way valve and the second five-way valve can be controlled to conduct different circuits and achieve different functions. These functions include vehicle interior cooling or heat dissipation, battery cooling or heat dissipation, electric drive cooling or heat dissipation, using the heat generated by the battery and / or electric drive for vehicle interior heating, and using a water heater for vehicle interior heating, etc., without specific limitations.

[0038] According to the thermal management system proposed in this application embodiment, when a cooling demand is detected, the heat exchange component is controlled to connect the air conditioning circuit, the battery circuit, and the electric drive circuit. The air conditioning circuit is used to cool the battery circuit and the electric drive circuit. When a heating demand is detected, the heat exchange component is controlled to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit. The heat between the circuits is used to heat each other. The corresponding circuits are connected through two five-way valves in the heat exchange component to meet all the user's needs. While reducing energy consumption, the battery and the passenger compartment are kept at a suitable temperature, improving driving comfort, battery range and lifespan, and enhancing the user experience.

[0039] Figure 3 This is a flowchart illustrating a control method for a thermal management system provided in an embodiment of this application.

[0040] like Figure 3 As shown, the control method of this thermal management system is applied to the aforementioned thermal management system, wherein the method includes the following steps:

[0041] In step S101, the user's actual needs are identified.

[0042] In step S102, when a cooling requirement is detected, the heat exchange component is controlled to connect the air conditioning circuit with the battery circuit and the electric drive circuit, and the air conditioning circuit is used to cool the battery circuit and the electric drive circuit.

[0043] In step S103, when a heating demand is detected, the heat exchange component is controlled to connect at least two of the battery circuit, electric drive circuit, and warm air circuit, so that the heat between the circuits can be used to heat each other.

[0044] It should be noted that the foregoing explanation of the thermal management system embodiment also applies to the control method of the thermal management system in this embodiment, and will not be repeated here.

[0045] According to the control method of the thermal management system proposed in the embodiments of this application, when a cooling demand is detected, the heat exchange component is controlled to connect the air conditioning circuit, the battery circuit, and the electric drive circuit, using the air conditioning circuit to cool the battery circuit and the electric drive circuit. When a heating demand is detected, the heat exchange component is controlled to connect at least two of the battery circuit, the electric drive circuit, and the heating circuit, using the heat between the circuits to heat each other, so that the corresponding circuits are connected through two five-way valves in the heat exchange component, thereby meeting all the user's needs. While reducing energy consumption, the battery and the passenger compartment are kept at a suitable temperature, improving driving comfort, battery range and lifespan, and enhancing the user experience.

[0046] The following will combine Figure 2 The control methods of the thermal management system are described in detail below:

[0047] The air conditioning thermal management system includes: compressor, gas-liquid separator, water-cooled condenser, condenser, evaporator, heater pump, heater core, water heater, battery-powered pump, electric-driven pump, battery, electric drive, heat exchanger, radiator, two five-way valves, three electronic expansion valves, seven two-way valves, and two one-way valves. Therefore, different scenarios can be derived according to actual needs, as detailed below:

[0048] Scenario 1: In pure electric vehicles, the cooling of the passenger compartment and battery system relies on the air conditioning system to expel heat outside the vehicle through the outdoor condenser. However, in summer, when the temperature is high and the vehicle is driven for a long time, the air conditioning load is high and the heat dissipation capacity of the outdoor condenser cannot meet the heat dissipation demand well, which will increase the energy consumption of the vehicle's air conditioning system. This system uses a five-way valve to connect the electric drive system circuit and the heating system circuit in series, and uses the radiator to assist in the heat dissipation of the air conditioning system, thereby reducing the load on the condenser.

[0049] Specifically, when summer temperatures are high and both the passenger cabin and battery require cooling, the air conditioning load is extremely high. When a radiator is needed to assist in cooling the condenser, a battery cooling loop is formed by controlling the connection of ports 1 and 2, and ports 3 and 5 of the first five-way valve, and ports 1 and 2, and ports 3 and 4 of the second five-way valve. This connects the radiator in series with the heating system loop, allowing it to assist in cooling the air conditioning system's condenser.

[0050] Scenario 2: When the passenger compartment has a heating requirement and the battery system has a heat dissipation requirement, the current waste heat utilization of pure electric vehicles is that the air conditioning system refrigerant absorbs heat through heat exchange plates and then compresses and exchanges heat for heating the passenger compartment. This waste heat utilization efficiency is low. This system can connect the battery system circuit in series with the heating system circuit to directly heat the passenger compartment.

[0051] Specifically, when the crew cabin has a heating requirement and the battery system has a heat dissipation requirement, the first five-way valve's ports 1 and 5 are connected, and the second five-way valve's ports 1 and 5 are connected, directly connecting the battery system circuit into the heating system circuit, and using the battery heat to directly heat the crew cabin.

[0052] Scenario 3: When the passenger compartment has a heating requirement and the electric drive system has a heat dissipation requirement, the current waste heat utilization of pure electric vehicles is that the refrigerant of the air conditioning system absorbs heat through the heat exchange plate and then compresses and exchanges heat for heating the passenger compartment. This waste heat utilization efficiency is low. This system can connect the electric drive system circuit in series with the heating system circuit to directly heat the passenger compartment.

[0053] Specifically, when the passenger compartment requires heating and the electric drive system requires heat dissipation, the 3rd and 5th ports of the first five-way valve and the 3rd and 5th ports of the second five-way valve are connected, directly connecting the electric drive system circuit into the heating system circuit, and using the heat generated by the electric drive to directly heat the passenger compartment.

[0054] Scenario 4: When the passenger compartment has a heating requirement and the battery system and electric drive system have a heat dissipation requirement, the current waste heat utilization of pure electric vehicles is that the air conditioning system refrigerant absorbs heat through heat exchange plates and then compresses and exchanges heat for heating the passenger compartment. This waste heat utilization efficiency is low. This system can connect the battery system circuit and the electric drive system circuit in series to the heating system circuit for direct use in heating the passenger compartment.

[0055] Specifically, when the crew cabin has a heating requirement and the battery system and electric drive system have a heat dissipation requirement, the first five-way valve connects ports 1 and 2, ports 3 and 5, and the second five-way valve connects ports 1 and 5, ports 2 and 3, connecting the battery system circuit and the electric drive system circuit in series, and also in series with the heating system circuit, using the heat from the battery and electric drive to directly heat the crew cabin.

[0056] Scenario 5: When the crew cabin does not require heating and the battery needs to be cooled, using the air conditioning system to lower the battery temperature would increase energy consumption. This system allows the battery system and radiator to form an independent circulation loop for battery cooling.

[0057] Specifically, when the crew compartment and electric drive system do not require thermal management, but only the battery system needs heat dissipation, the first five-way valve's port 1 and port 4A are connected, and the second five-way valve's port 1 and port 4A are connected, connecting the radiator in series into the battery system circuit to dissipate heat from the battery.

[0058] Scenario 6: This system can realize a series circulation loop between the battery system and the electric drive system, and use the heat generated by the operation of the electric drive system to heat the battery.

[0059] Specifically, when the crew cabin does not require thermal management, the electric drive system needs heat dissipation, and the battery system needs heating, the first five-way valve is connected between ports 1 and 2, and between ports 3 and 4. The second five-way valve is connected between ports 2 and 3, and between ports 1 and 5. This connects the battery system circuit and the electric drive system circuit in series, using the heat generated by the electric drive system to heat the battery.

[0060] It should be noted that this application includes, but is not limited to, the scenarios described above. Depending on different needs, the corresponding ports of the first five-way valve and the second five-way valve can be controlled to connect different circuits and achieve different functions. Specific functions include refrigeration or heat dissipation of the passenger compartment, battery cooling or heat dissipation, electric drive cooling or heat dissipation, using heat generated by the battery and / or electric drive to heat the passenger compartment, and using a water heater to heat the passenger compartment, etc., without specific limitations.

[0061] (1) By controlling the five-way valve, the radiator can be connected in series to the heating system circuit. When the air conditioning is under heavy load in a high-temperature environment, the radiator can assist the condenser of the air conditioning system in dissipating heat. (2) By controlling the five-way valve, the battery system circuit can be connected in series with the heating system circuit. The heat generated by the battery can be used to directly heat the passenger compartment. (3) By controlling the five-way valve, the electric drive system circuit can be connected in series with the heating system circuit. The heat generated by the electric drive can be used to directly heat the passenger compartment. (4) By controlling the five-way valve, the radiator can be connected in series to the battery system circuit. The radiator can be used to dissipate heat from the battery. (5) By controlling the five-way valve, the battery system circuit can be connected in series with the electric drive system circuit. The heat generated by the electric drive can be used to heat the battery. (6) The low temperature environment causes the refrigerant to be throttled in the evaporator and condenser in sequence, making the temperature inside the condenser lower and absorbing more heat from the outside. The water-cooled condenser provides heat to the crew cabin and battery system, which is simpler than the structure of multiple condensers and evaporators in the existing air conditioning system; (7) The crew cabin heating can directly connect the battery and electric drive system circuits to the heating core for direct use in the crew cabin heating, which is more efficient than the existing technology of absorbing the waste heat of the battery and electric drive through the air conditioning circulation system and converting it for use in the crew cabin heating; (8) The water-cooled condenser is connected in series in the heating circuit of the battery and electric drive system, using the heat generated by the air conditioning system to heat the battery; (9) The heat exchanger is connected in series in the cooling circuit of the battery and electric drive system, using the heat exchanger to absorb the heat of the battery and electric drive system for cooling, so as to achieve independent cooling.

[0062] In summary, by controlling the five-way valve, this application allows for the selective connection of the battery system circuit, electric drive system circuit, and heating system circuit. This enables the system to regulate the temperature of the passenger compartment, battery, and motor, thereby ensuring that the battery and passenger compartment are at a suitable temperature while reducing energy consumption, improving driving comfort, and extending battery range and lifespan.

[0063] This application also provides a computer-readable storage medium storing a computer program or instructions thereon, which, when executed by a processor, implements the control method of the thermal management system described above.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0067] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or more of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0068] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

Claims

1. A thermal management system, characterized in that, include: Battery circuit, electric drive circuit, heating circuit, and air conditioning circuit; A heat exchange assembly is provided, wherein the heat exchange assembly is connected to the battery circuit, the electric drive circuit, the heating circuit, and the air conditioning circuit, respectively. The heat exchange assembly includes a first five-way valve and a second five-way valve. One end of the battery circuit is connected to the first port of the first five-way valve, and the other end of the battery circuit is connected to the first port of the second five-way valve. The fifth port of the first five-way valve is connected to the second port of the second five-way valve via a heat exchanger. One end of the electric drive circuit is connected to the fourth port of the first five-way valve, and the other end of the electric drive circuit is connected to the third port of the second five-way valve. The third port of the first five-way valve is connected to the fifth port of the second five-way valve via a pipe. One end of the heating circuit is connected to the second port of the first five-way valve, and the other end of the heating circuit is connected to the fourth port of the second five-way valve via a radiator. The controller is used to control the heat exchange component to connect the air conditioning circuit, the battery circuit, and the electric drive circuit when a cooling demand is detected, so as to use the air conditioning circuit to cool down the battery circuit and the electric drive circuit. When a heating demand is detected, the controller controls the heat exchange component to connect at least two circuits of the battery circuit, the electric drive circuit, and the heating circuit, so as to use the heat between the circuits to heat each other. The thermal management system further includes a radiator and a heat exchanger. One end of the radiator is connected to the heating circuit, the third port of the first five-way valve, and the fifth port of the second five-way valve via a pipe, and the other end is connected to the fourth port of the second five-way valve via a pipe. The heat exchanger is connected to the fifth port of the first five-way valve, the second port of the second five-way valve, the third electronic expansion valve, the first two-way valve, and the sixth two-way valve via pipes.

2. The thermal management system according to claim 1, characterized in that, The battery circuit includes: The battery includes a power battery and a battery water pump, wherein one end of the power battery is connected to the battery water pump via a pipeline, and the other end is connected to the first port of the first five-way valve via a pipeline, and the other end of the battery water pump is connected to the first port of the second five-way valve via a pipeline.

3. The thermal management system according to claim 1, characterized in that, The electric drive circuit includes: An electric drive and an electric water pump, wherein one end of the electric drive is connected to the electric water pump via a pipeline, and the other end is connected to the fourth port of the first five-way valve via a pipeline, and the other end of the electric water pump is connected to the third port of the second five-way valve via a pipeline.

4. The thermal management system according to claim 1, characterized in that, The warm air circuit includes: The system comprises a heater pump, a heater core, and a water heater. One end of the heater pump is connected to a fourth two-way valve via a pipe, and the other end is connected to a water-cooled condenser and the second port of a first five-way valve via a pipe. The other end of the fourth two-way valve is connected to the heater core via a pipe. The other end of the heater core is connected to a radiator and the water heater via a pipe. The other end of the water heater is connected to the water-cooled condenser, and the other end of the radiator is connected to the fourth port of a second five-way valve.

5. The thermal management system according to claim 1, characterized in that, The air conditioning circuit includes: Compressor, gas-liquid separator, water-cooled condenser, condenser and evaporator, among which, One end of the compressor is connected to the water-cooled condenser via a pipeline, and the other end is connected to the gas-liquid separator; one end of the water-cooled condenser is connected to the water heater, the warm air pump, the third two-way valve, and the fifth two-way valve via a pipeline, and the other end of the third two-way valve is connected to the first one-way valve via a pipeline; One end of the fifth two-way valve is connected to the first electronic expansion valve and the seventh two-way valve via a pipeline. The other end of the first electronic expansion valve is connected to the condenser via a pipeline. One end of the condenser is connected to the first one-way valve and the second two-way valve via a pipeline. The other end of the first one-way valve is connected to the second electronic expansion valve, the third two-way valve, and the third electronic expansion valve via a pipeline. One end of the second electronic expansion valve is connected to the evaporator. One end of the evaporator is connected to the first two-way valve. The other end of the first two-way valve is connected to the sixth two-way valve and the heat exchanger. The other end of the sixth two-way valve is connected to the gas-liquid separator and the second one-way valve. The other end of the gas-liquid separator is connected to the compressor. One end of the second one-way valve is connected to the second two-way valve. One end of the second two-way valve is connected to the first one-way valve. The other end of the third electronic expansion valve is connected to the heat exchanger. The other end of the heat exchanger is connected to the fifth port of the sixth two-way valve, the first two-way valve, the first five-way valve, and the second five-way valve. The other end of the seventh two-way valve is connected to the first two-way valve.

6. A vehicle comprising a thermal management system as described in any one of claims 1-5.

7. A control method for a thermal management system, characterized in that, The method is applied to the thermal management system according to any one of claims 1-5, wherein the method includes the following steps: Identify the user's actual needs; When a cooling demand is detected, the heat exchange components are controlled to connect the air conditioning circuit with the battery circuit and the electric drive circuit, and the air conditioning circuit is used to cool the battery circuit and the electric drive circuit. When a heating demand is detected, the heat exchange components are controlled to activate at least two of the battery circuit, electric drive circuit, and warm air circuit, using the heat between the circuits to heat each other.

8. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed by the processor, they are used to implement the control method of the thermal management system as described in claim 7.

Images