Thermal management system for vehicle, vehicle, and control method

Abstract

The present invention discloses a thermal management system for a vehicle, a vehicle, and a control method. The thermal management system includes a heat exchange circuit, a battery circuit, and a motor circuit. The heat exchange circuit is connected to the exhaust duct of the engine and is connected to the battery circuit via a first control valve. The battery circuit includes at least a battery assembly, which is heated by the heat exchange circuit. The downstream position of the battery assembly is connected to the cylinder block of the engine via a second control valve. The motor circuit includes at least a drive motor, which is connected to the cylinder block of the engine via the second control valve so that the drive motor is heated by the waste heat of the engine. The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient battery heating, and motor waste heat utilization, thereby achieving rational use of energy within the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a thermal management system for a vehicle, the vehicle, and a control method. Background Art

[0002] The automotive industry is currently committed to reducing vehicle energy consumption to adapt to the increasingly severe energy crisis. This includes developing new energy vehicles and adopting new technologies, but these efforts are often costly. The reduced range of pure electric vehicles in winter has long been a problem plaguing OEMs. Battery heating and passenger compartment heating all require energy from the battery, further straining the limited energy storage capacity. Therefore, improving energy utilization within the vehicle has become a pressing issue, aiming to achieve longer range for the same battery charge and remain competitive. Summary of the Invention

[0003] The present invention aims to at least solve the technical problems of low energy utilization rate existing in the prior art.

[0004] In order to achieve the above-mentioned objectives, the present invention provides, on the one hand, a thermal management system for a vehicle, which includes a heat exchange circuit, a battery circuit and a motor circuit; the heat exchange circuit is connected to the exhaust pipe of the engine, and the heat exchange circuit is connected to the battery circuit through a first control valve; the battery circuit at least includes a battery assembly, and the battery assembly is heated by the heat exchange circuit, and the downstream position of the battery assembly is connected to the cylinder block of the engine through a second control valve; the motor circuit at least includes a drive motor, and the motor circuit is connected to the cylinder block of the engine through the second control valve so that the drive motor is heated by the waste heat of the engine.

[0005] In some embodiments, the motor circuit also includes a radiator arranged in series with the drive motor, the first port of the radiator is connected to the downstream position of the battery assembly, and the second port of the radiator is connected to the upstream position of the battery assembly and the second control valve respectively through a sixth control valve.

[0006] In some embodiments, the downstream position of the battery assembly is connected to the motor circuit through a third control valve, and the third control valve is arranged between the drive motor and the first port of the radiator, and the first port of the radiator is directly connected to the third control valve.

[0007] In some embodiments, the heat exchange circuit includes a heat exchanger and a heat collection tank arranged in series, the heat exchanger is connected to the exhaust pipe through a fourth control valve, the first control valve is arranged at the outlet position of the heat collection tank, the heat collection tank is connected to the upstream of the battery assembly through the first control valve, and the downstream position of the battery assembly is connected to the inlet of the heat exchanger.

[0008] In some embodiments, an air-conditioning cold circuit is also included, and the battery circuit also includes a PTC heater. The battery assembly is connected to the PTC heater and the cooler in the air-conditioning cold circuit respectively through a fifth control valve, and the battery assembly is heated by the PTC heater and cooled by the cooler.

[0009] In some embodiments, the air-conditioning cold circuit also includes a compressor and a condenser arranged in series, the outlet of the condenser is respectively connected to the inlet of the cooler and the inlet of the evaporator, and the outlet of the cooler and the outlet of the evaporator are both connected to the compressor.

[0010] In some embodiments, the heat exchange circuit is further connected to a cylinder block of the engine through the first control valve.

[0011] Another aspect of the present invention provides a vehicle, comprising any one of the above-mentioned thermal management systems.

[0012] Another aspect of the present invention provides a control method for a thermal management system for a vehicle, comprising:

[0013] When the temperature of the battery assembly is lower than a first predetermined threshold, heat in the exhaust gas of the engine stored in the heat exchange circuit is passed through the battery circuit to heat the battery assembly;

[0014] When the engine is in a startup phase, using the heat to heat a cylinder of the engine;

[0015] When the temperature of the drive motor is lower than a second predetermined threshold, the heat is used to heat the drive motor through the motor circuit.

[0016] In some embodiments, when the temperature of the battery assembly is higher than a third predetermined threshold, the battery assembly is cooled by a cooler in an air-conditioning cold loop or a radiator in the motor loop.

[0017] In some embodiments, when the amount of heat stored in the heat exchange circuit is lower than a fourth predetermined threshold, the battery assembly is heated by a PTC heater in the battery circuit.

[0018] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the structure of the thermal management system according to an embodiment of the present disclosure;

[0021] Figure 2 Schematic diagram of the steps of the control method of the thermal management system according to an embodiment of the present disclosure.

[0022] Reference numerals:

[0023] 1-first heat exchanger; 2-heat collecting tank; 3-fourth control valve; 4-third pump; 5-first control valve; 6-battery assembly; 7-first pump; 8-third control valve; 9-drive motor; 10-motor controller; 11-charger; 12-radiator; 13-second pump; 14-fifth control valve; 15-PTC heater; 16-cooler; 17-compressor; 18-condenser; 19-evaporator; 20-first four-way piece; 21-first three-way piece; 22-second three-way piece; 23-second four-way piece; 24-second control valve; 25-sixth control valve; 100-heat exchange circuit; 200-battery circuit; 300-air conditioning cold circuit; 400-motor circuit; 500-engine. DETAILED DESCRIPTION

[0024] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0025] It should be understood that various modifications may be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the invention will occur to those skilled in the art.

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the general description of the invention given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.

[0027] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0028] It should also be understood that although the invention has been described with reference to certain specific examples, those skilled in the art will be able to realize many other equivalent forms of the invention that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0029] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0030] Specific embodiments of the present invention will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present invention with unnecessary or superfluous detail. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but rather to serve as a basis and representative basis for teaching those skilled in the art to variously employ the present invention with virtually any suitable detailed structure.

[0031] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," each of which may refer to one or more of the same or different embodiments according to the present invention.

[0032] The first embodiment of the present invention provides a thermal management system for a vehicle, which can store waste heat in the exhaust gas of the engine in a heat storage device when the engine of the vehicle is started or the engine has just been shut down and the body temperature is high, so as to be used for later heating of components such as motor components and battery components. In this way, the vehicle can be used normally in pure electric mode as long as the engine is started. By using the waste heat in the exhaust gas of the engine to heat the various components that need to be heated, the energy required for heating these components in winter can be greatly saved, and the pure electric cruising range of the vehicle at low or relatively low temperatures can be effectively improved. In addition, the thermal management system can also cool the battery components, etc. when necessary.

[0033] like Figure 1As shown, the thermal management system includes a heat exchange circuit 100, a battery circuit 200, and a motor circuit 400. The heat exchange circuit 100 is connected to the exhaust pipe of the engine 500 and is connected to the battery circuit via a first control valve 5. The battery circuit 100 includes at least a battery assembly 6, which is heated by the heat exchange circuit 100. The downstream position of the battery assembly 6 is connected to the cylinder of the engine 500 via a second control valve 24. The motor circuit 400 includes at least a drive motor 9, which is connected to the cylinder of the engine 500 via a second control valve 24, so that the drive motor 9 is heated by the exhaust heat of the engine 500. Both the first control valve 5 and the second control valve 24 can be four-way valves.

[0034] Furthermore, the motor circuit 400 also includes a radiator 12 and a second pump 13 arranged in series with the drive motor 9. The first port of the radiator 12 is connected to the downstream position of the battery assembly 6, and the second port of the radiator 12 is connected to the upstream position of the battery assembly 6 and the second control valve 24 respectively through a sixth control valve 25. The sixth control valve here can be a three-way valve.

[0035] Furthermore, the downstream position of the battery assembly 6 is connected to the motor circuit 400 via a third control valve 8. The third control valve 8 is disposed between the drive motor 9 and the first port of the radiator 12. The second port of the radiator 12 is directly connected to the third control valve 8. The third control valve 8 is a four-way valve.

[0036] Furthermore, the heat exchange circuit 100 includes a heat exchanger 1, a heat collection tank 2, and a third pump 4 arranged in series. The heat exchanger 1 is connected to the exhaust pipe via a fourth control valve 3. The first control valve 5 is provided at the outlet of the heat collection tank 2. The heat collection tank 2 is connected upstream of the battery assembly 6 via the first control valve 5, and the downstream of the battery assembly 6 is connected to the inlet of the heat exchanger 1. The fourth control valve 3 here can be a three-way valve.

[0037] Furthermore, the thermal management system also includes an air conditioning cooling circuit 300, and the battery circuit 200 also includes a PTC heater 15 and a first pump 7. The battery assembly 6 is connected to the PTC heater 15 and the cooler 16 in the air conditioning cooling circuit respectively via a fifth control valve 14. The PTC heater 15 heats the battery assembly 6, and the cooler 16 cools the battery assembly 6. The fifth control valve 14 is a three-way valve.

[0038] Furthermore, the air-conditioning cold circuit 300 also includes a compressor 17 and a condenser 18 arranged in series, the outlet of the condenser 18 is respectively connected to the inlet of the cooler 16 and the inlet of the evaporator 19, and the outlet of the cooler 16 and the outlet of the evaporator 19 are both connected to the compressor 17.

[0039] Furthermore, the heat exchange circuit 100 is also connected to the cylinder of the engine 500 through the first control valve 5 .

[0040] It should be noted that the above-mentioned first control valve 5, second control valve 24, third control valve 8, fourth control valve 3, fifth control valve 14 and sixth control valve 25 all adopt solenoid valves, which can directly open the corresponding passages or open the corresponding passages in a proportional adjustment manner.

[0041] The disclosed embodiments effectively manage heat within the vehicle by combining the usage scenarios of different components and the overall system within the vehicle. A detailed description based on the above control method is provided below:

[0042] The thermal management system can store the waste heat in the exhaust gas of the engine 100 when the temperature of the engine 100 is high, for example, to be used for heating the motor assembly, battery assembly and other components at a later time, so that the vehicle can be used normally in pure electric mode as long as the engine can be started; in addition, by using the waste heat in the exhaust gas of the engine 100 to heat the various components that need to be heated, the energy required to heat these components in winter can be greatly saved, and the pure electric range of the vehicle at low or relatively low temperatures can be effectively improved. For example, when the battery assembly 6 of the vehicle needs to be heated (for example, when the temperature of the battery assembly is lower than a first predetermined threshold), the heat in the heat collection tank 2 in the heat exchange circuit 100 or the waste heat generated by the drive motor 9 in the motor circuit 400 can be used for heating. At the same time, heating can also be performed by the PTC heater 15 in the absence of heat storage (for example, when the stored heat is lower than a fourth predetermined threshold). In addition, when the drive motor 9 needs to be heated (for example, when the temperature of the drive motor is lower than a second predetermined threshold), the heat in the heat collection tank 2 in the heat exchange circuit 100 can be used for heating.

[0043] In other cases, when the battery assembly 6 needs to be cooled (for example, when the temperature of the battery assembly is higher than a third predetermined threshold), the cooler 16 can be used or the radiator 12 in the motor circuit 400 can be used to cool the battery assembly 6 to meet the battery cooling requirements in multiple scenarios.

[0044] In this way, not only can the purpose of saving heating energy be achieved, but also the drive motor 9 and the battery assembly 6 can be quickly brought to the optimal operating temperature, thereby ensuring the power and economy of the vehicle.

[0045] In addition, when the engine 100 is in the startup phase, the heat in the heat collecting tank 2 in the heat exchange circuit 100 can be used to heat the engine 100, thereby increasing the initial temperature of the engine 100 and improving emissions and reducing fuel consumption.

[0046] From the above, it can be seen that the control method of the thermal management system of the embodiment of the present disclosure can be used in multiple scenarios. Taking scenario one as an example, in scenario one, the vehicle can be driven under ultra-low temperature conditions in winter. The thermal management system can realize multiple functions such as waste heat energy storage, battery, motor and engine heating.

[0047] Specifically, when the engine 100 of the vehicle is started or the engine 100 has just been shut down and the body temperature is high, the exhaust temperature of the engine 100 is high. The fourth control valve 3 is controlled to open the 1→2 direction passage to introduce the high-temperature exhaust gas into the heat exchanger 1, the third pump 4 is controlled to operate, and the first control valve is controlled to open the 1→3 direction passage. The fluid in the heat exchange circuit 100 and the high-temperature exhaust gas are heat exchanged in the heat exchanger 1. At this time, the waste heat in the high-temperature exhaust gas of the engine 100 is recovered and stored through the heat collection tank 2 for later heating of the battery assembly 6, the drive motor 9, the engine 100 and other components.

[0048] When the vehicle needs to recover energy or needs to travel in a purely electric state at this time, if the temperature of the battery assembly 6 is low, it will affect the efficiency of energy recovery and the discharge amount of the battery assembly 6, resulting in less energy recovery for the vehicle or worsening of the power of the entire vehicle. For this reason, the battery assembly 6 needs to be heated. Specifically, the first control valve 5 is controlled to open the 1→4 direction passage, and the 2nd and 3rd ports of the first control valve 5 are controlled to be closed, and the third pump 4 is controlled to operate at the same time so that the fluid flows to the battery circuit 200.

[0049] Furthermore, the fifth control valve 14 is controlled to open the 2→1 direction passage, and the 3rd port is controlled to be closed, while the 2nd and 4th ports of the third control valve 8 are controlled to be closed, and the first pump 7 is controlled to operate, so as to pump the fluid with a higher temperature into the battery circuit 200, thereby heating the battery assembly 6; the heated fluid flows back to the heat exchange circuit 100 through the first four-way piece 20 to continue heat exchange and is stored in the heat collection tank 2, so that the battery assembly 6 can be heated solely by the heat of the fluid in the heat collection tank 2; of course, the first control valve 5 can also be controlled to open the 1→4 and 1→3 direction passages, and the 2nd port can be controlled to remain closed, so that the first heat exchanger 1 can recover the waste heat of the engine 100 on the one hand, and heat the battery assembly 6 on the other hand.

[0050] When the waste heat of the engine 100 and the energy in the heat collection tank 1 heat both the battery assembly 6 and the drive motor 9, the third control valve 8 is controlled to open the 4→1 direction passage, and ports 2 and 3 are closed, the sixth control valve 25 is controlled to open the 2→1 direction passage, and port 3 is closed, the second control valve 24 is controlled to open the 4→1 direction passage, and ports 2 and 3 are closed, and the first control valve 5 is controlled to open the 1→4 direction passage, and ports 2 and 3 are closed.

[0051] When the vehicle is just turned off, the waste heat of the engine 100 can be utilized. The first pump 7 is controlled to operate, and the second control valve 24 is controlled to open the 3→1 direction passage, and ports 2 and 4 are closed. In this way, the fluid in the battery circuit 200 can pass through the engine 100. Then, the first control valve 5 is controlled to open the 3→4 direction passage, and ports 2 and 1 are closed. In this way, the fluid passing through the engine 100 can also return to the battery circuit 200 through the first four-way piece 20 and pass through the first pump 7, thereby forming a loop. During this process, ports 1 and 3 of the fifth control valve 14 are both closed.

[0052] When there is no heat in the heat collecting tank 2 or the heat in the heat collecting tank 2 is not used to heat the battery assembly 6, the waste heat generated by the drive motor 9 can also be used for heating. For this purpose, the motor circuit 400 needs to be added to the battery circuit 200. Specifically, the first control valve 5 is controlled to open the 1→3 direction passage, and ports 2 and 4 are closed. The fifth control valve 14 is controlled to open the 2→1 direction passage, and port 3 is controlled to be closed. The first pump 7 is controlled to run. At the same time, the third control valve 8 is controlled to open the 4→1 direction passage, and ports 2 and 3 are closed. The second pump 13 is controlled to run. In this way, the waste heat of the drive motor 9 in the motor circuit 400 can heat the battery assembly 6.

[0053] Of course, the battery assembly 6 can also be heated using the PTC 15. At this time, the fifth control valve 14 is controlled to open the 1→3 direction passage, keeping the 2 port closed, and the first pump 7 is controlled to run, and the PTC 15 is used to heat the battery assembly 6.

[0054] In addition, when the engine 100 needs to be heated, the first pump 4 is controlled to operate, the first control valve 5 is controlled to open the 1→2 direction passage, and ports 3 and 4 are closed. The fluid in the heat collection tank 2 is pumped into the cylinder of the engine 100 through the third pump 4, thereby heating the cylinder of the engine 100. The heated fluid returns to the heat collection tank 2 through the first four-way piece 20.

[0055] The following describes scenario 2 as an example. In scenario 2, the battery, motor, and passenger compartment in the vehicle can be cooled.

[0056] Specifically, when the ambient temperature is low or moderate, when the battery assembly 6 needs to be cooled, the radiator 12 in the motor circuit 400 can be used alone for cooling and dissipating heat. At this time, the first control valve 5 is controlled to open the 1→3 direction passage, and ports 4 and 2 remain closed. The fifth control valve 14 is controlled to open the 2→1 direction passage, and port 3 is controlled to be closed. The first pump 7 is controlled to run, and the third control valve 8 is controlled to open the 4→3 direction passage, and ports 1 and 2 remain closed. The fluid flows through the radiator 12 for heat exchange, and the fluid after heat exchange flows to the battery assembly 6 through the second four-way piece 23 and the first three-way piece 21.

[0057] When the ambient temperature is lower, when the battery assembly 6 needs to be cooled to maintain a suitable temperature, the battery assembly 6 and the drive motor 9 share the radiator 12 for heat dissipation. At this time, the first control valve 5 is controlled to open the 1→3 direction passage, and ports 4 and 2 remain closed. The fifth control valve 14 is controlled to open the 2→1 direction passage, and port 3 is controlled to be closed. The first pump 7 is controlled to operate. At this time, the third control valve 8 is controlled to open the 4→1 and 3→1 direction passages, and ports 1 and 2 are closed. The second pump 13 is controlled to operate. In this way, the fluid in the battery circuit 200 is mixed with the water flow in the motor circuit 400, and then cooled together through the radiator 12. The fluid after heat exchange flows to the battery assembly 6 through the second four-way piece 23 and the first three-way piece 21.

[0058] When the battery assembly 6 needs to be cooled by the cooler 16 of the air-conditioning cold circuit 400, the fifth control valve 14 is controlled to open the 2→1 direction passage, the 3 port is controlled to be closed, and the first pump 7 is controlled to run, so that the cooler 16 is used to cool down the battery assembly 6.

[0059] When the drive motor 9 needs to be cooled, the third control valve 8 is adjusted to open the 3→1 direction passage, and ports 2 and 4 are closed, and the second pump 13 is controlled to run to pump the fluid into the drive motor 9 and other components that need cooling, and then the temperature is reduced through the radiator 12; when the drive motor 9 does not need to be cooled, the third control valve 8 is adjusted to maintain the 2→1 direction passage, and ports 3 and 4 are closed, and the second pump 13 is controlled to run to only maintain the temperature equalization function, thereby realizing the fluid insulation in the motor circuit 400.

[0060] When the cooling effect of the drive motor 9 is not obvious, the cooler 16 in the air-conditioning cold circuit 400 can be used for cooling. At this time, the fifth control valve 14 is controlled to open the 2→1 direction passage, and the 3rd port is controlled to be closed. The first pump 7 is controlled to run. The first control valve 5 is controlled to open the 1→3 direction passage, and the 2nd and 4th ports are closed. The third control valve 8 opens the 4→1 direction passage, and the 2nd and 3th ports are closed. The second pump 13 is run. In this way, the cooler 16 can cool the drive motor 9 and the battery assembly 6 at the same time, but the load is large and there are fewer usage scenarios.

[0061] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle.

[0062] A second embodiment of the present disclosure further provides a vehicle, which includes the thermal management system according to any one of the above technical solutions.

[0063] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle.

[0064] Based on the same inventive concept, a third embodiment of the present invention provides a control method for a thermal management system for a vehicle, such as Figure 2 As shown, it includes:

[0065] S101, when the temperature of the battery assembly is lower than a first predetermined threshold, heat in the exhaust gas of the engine stored in the heat exchange circuit is passed through the battery circuit to heat the battery assembly;

[0066] S102, when the engine is in a startup phase, using the heat to heat a cylinder of the engine;

[0067] S103 : When the temperature of the driving motor is lower than a second predetermined threshold, heat the driving motor through the motor circuit.

[0068] Furthermore, when the temperature of the battery assembly is higher than a third predetermined threshold, the battery assembly is cooled by a cooler in an air-conditioning cold circuit or a radiator in the motor circuit.

[0069] Furthermore, when the amount of heat stored in the heat exchange circuit is lower than a fourth predetermined threshold, the battery assembly is heated by the PTC heater in the battery circuit.

[0070] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle.

[0071] A fourth embodiment of the present disclosure provides a storage medium, which is a computer-readable medium and stores a computer program. When the computer program is executed by a processor, the method provided by the first embodiment of the present disclosure is implemented, including the following steps S11 to S13:

[0072] S11, when the temperature of the battery assembly is lower than a first predetermined threshold, heat in the exhaust gas of the engine stored in the heat exchange circuit is passed through the battery circuit to heat the battery assembly;

[0073] S12, when the engine is in a startup phase, using the heat to heat a cylinder of the engine;

[0074] S13 , when the temperature of the driving motor is lower than a second predetermined threshold, heating the driving motor through the motor circuit.

[0075] Furthermore, when the computer program is executed by the processor, the other methods provided in the third embodiment of the present disclosure are implemented.

[0076] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle.

[0077] A fifth embodiment of the present disclosure provides an electronic device, which includes at least a memory and a processor. The memory stores a computer program, and the processor implements the method provided by any embodiment of the present disclosure when executing the computer program in the memory. For example, the electronic device computer program steps S21 to S23 are as follows:

[0078] S21, when the temperature of the battery assembly is lower than a first predetermined threshold, heat in the exhaust gas of the engine stored in the heat exchange circuit is passed through the battery circuit to heat the battery assembly;

[0079] S22, when the engine is in a startup phase, using the heat to heat a cylinder of the engine;

[0080] S23 , when the temperature of the driving motor is lower than a second predetermined threshold, heating the driving motor through the motor circuit.

[0081] Furthermore, the processor also executes the computer program in the fourth embodiment

[0082] The disclosed embodiments effectively integrate the utilization of engine waste heat, efficient heating of batteries, and waste heat utilization of motors, which can significantly save the energy required to heat vehicle internal components in winter, effectively improve the vehicle's pure electric range, especially at low or relatively low temperatures, and can also cool vehicle internal components when necessary, thereby achieving rational use of energy in the vehicle.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0085] In the description of the present invention, "plurality" means two or more.

[0086] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0087] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0088] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0089] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A thermal management system for a vehicle, characterized in that: The heat exchange circuit includes a heat exchange circuit, a battery circuit, and a motor circuit; the heat exchange circuit is connected to the exhaust pipe of the engine and is connected to the battery circuit via a first control valve; the battery circuit includes at least a battery assembly, which is heated by the heat exchange circuit, and a downstream position of the battery assembly is connected to the cylinder block of the engine via a second control valve; the motor circuit includes at least a drive motor, which is connected to the cylinder block of the engine via the second control valve so that the drive motor is heated by waste heat from the engine; The motor circuit also includes a radiator arranged in series with the drive motor, the first port of the radiator is connected to the downstream position of the battery assembly, and the second port of the radiator is connected to the upstream position of the battery assembly and the second control valve respectively through a sixth control valve; the downstream position of the battery assembly is connected to the motor circuit through a third control valve, and the third control valve is arranged between the drive motor and the first port of the radiator, and the first port of the radiator is directly connected to the third control valve.

2. The thermal management system according to claim 1, characterized in that The heat exchange circuit includes a heat exchanger and a heat collection tank arranged in series. The heat exchanger is connected to the exhaust pipe through a fourth control valve. The first control valve is arranged at the outlet position of the heat collection tank. The heat collection tank is connected to the upstream of the battery assembly through the first control valve, and the downstream position of the battery assembly is connected to the inlet of the heat exchanger.

3. The thermal management system according to claim 1, wherein: It also includes an air-conditioning cold circuit, and the battery circuit also includes a PTC heater. The battery assembly is connected to the PTC heater and the cooler in the air-conditioning cold circuit respectively through a fifth control valve. The battery assembly is heated by the PTC heater and cooled by the cooler.

4. The thermal management system according to claim 3, characterized in that: The air conditioning cold circuit also includes a compressor and a condenser arranged in series, the outlet of the condenser is connected to the inlet of the cooler and the inlet of the evaporator respectively, and the outlet of the cooler and the outlet of the evaporator are both connected to the compressor.

5. The thermal management system according to claim 1, wherein: The heat exchange circuit is also connected to the cylinder block of the engine through the first control valve.

6. A vehicle, characterized in that: A thermal management system comprising the thermal management system according to any one of claims 1 to 5.

7. A control method for the thermal management system according to claim 1, which is used in a vehicle, characterized in that: The control method includes: When the temperature of the battery assembly is lower than a first predetermined threshold, heat in the exhaust gas of the engine stored in the heat exchange circuit is passed through the battery circuit to heat the battery assembly; When the engine is in a startup phase, using the heat to heat a cylinder of the engine; When the temperature of the drive motor is lower than a second predetermined threshold, the heat is used to heat the drive motor through the motor circuit.

8. The control method according to claim 7, characterized in that: When the temperature of the battery assembly is higher than a third predetermined threshold, the battery assembly is cooled by a cooler in an air-conditioning cold circuit or a radiator in the motor circuit.

9. The control method according to claim 7, characterized in that: When the amount of heat stored in the heat exchange circuit is lower than a fourth predetermined threshold, the battery assembly is heated by the PTC heater in the battery circuit.

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