Vehicle Thermal Management System, Method, Device, Vehicle and Storage Medium

Abstract

The present invention relates to a vehicle thermal management system, method, device, vehicle, and storage medium. The system includes: an electric drive transmission assembly and an external oil cooler; the electric drive transmission assembly includes a transmission oil chamber, an internal heat exchanger, and a motor oil chamber. The transmission oil chamber is provided with transmission components, a transmission oil temperature sensor, and a first control valve; the internal heat exchanger is used to achieve heat transfer between the transmission oil chamber and the motor oil chamber; the first control valve is connected to the transmission components and the internal heat exchanger, and is used to connect the transmission components and the internal heat exchanger according to the real-time oil temperature of the transmission oil chamber measured by the transmission oil temperature sensor; the external oil cooler is used to transfer the heat of the motor oil chamber outside the electric drive transmission assembly. Since the transmission and the motor do not need to share an oil chamber, on the premise of meeting the transmission oil temperature, the oil temperature in the motor oil chamber can be reduced by the external oil cooler, improving the working efficiency of the electric drive transmission, and further improving the overall driving efficiency of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and particularly to a vehicle thermal management system, method, device, vehicle, and storage medium. Background Art

[0002] The lubricating oil temperature has a great influence on the service life and efficiency of the transmission mechanism of an automobile. Too low oil temperature will cause the viscosity of the lubricating oil to increase, increasing the mechanical energy loss of the transmission; too high oil temperature will cause the deformation of the transmission mechanism and accelerate the aging of the seals, affecting the service life of the transmission. Therefore, existing automobiles are all equipped with a thermal management device for heating the lubricating oil at low temperature and cooling it at high temperature to ensure the service life of the transmission and the high working efficiency of the transmission.

[0003] However, in order to reduce the system volume and improve the power density, the prior art integrates the motor and the transmission to obtain an electric drive transmission. In the electric drive transmission, the motor and the transmission share the oil cavity and the oil circuit, and the management strategy of the thermal management device is the same. When ensuring the optimal efficiency of the transmission, the temperature of the lubricating oil used by the motor rises, resulting in a decrease in the working efficiency of the motor, and further leading to a decrease in the overall working efficiency of the vehicle. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a vehicle thermal management system to solve the problem of low working efficiency of the motor caused by the same thermal management strategy for the transmission and the motor in the prior art; the second purpose is to provide a vehicle thermal management method; the third purpose is to provide a vehicle thermal management device; the fourth purpose is to provide a vehicle capable of implementing the vehicle thermal management method provided by the present application; the fifth purpose is to provide a storage medium capable of implementing the vehicle thermal management method provided by the present application.

[0005] To achieve the above purposes, the technical solutions adopted by the present invention are as follows:

[0006] In a first aspect, the present invention provides a vehicle thermal management system, including: an electric drive transmission assembly and an external oil cooler;

[0007] The electric drive transmission assembly includes a transmission oil cavity, an internal heat exchanger, and a motor oil cavity. The transmission oil cavity is provided with transmission components, a transmission oil temperature sensor, and a first control valve;

[0008] The internal heat exchanger is used to realize the heat transfer between the transmission oil cavity and the motor oil cavity;

[0009] The first control valve is connected to the transmission components and the internal heat exchanger, and is used to connect the transmission components and the internal heat exchanger according to the real-time oil temperature of the transmission oil cavity measured by the transmission oil temperature sensor;

[0010] The external oil cooler is used to transfer the heat of the motor oil chamber to the outside of the electric drive transmission assembly.

[0011] According to the above technical means, the vehicle thermal management system provided by the present application can transfer the heat in the transmission oil chamber to the motor oil chamber through the heat exchanger and transfer it to the outside of the electric drive transmission through the external oil cooler. Since the transmission and the motor in the technical solution provided by the present application do not need to share an oil chamber, on the premise of meeting the transmission oil temperature, the oil temperature in the motor oil chamber can be reduced through the external oil cooler, improving the working efficiency of the electric drive transmission, and thus improving the overall driving efficiency of the vehicle.

[0012] Furthermore, in the vehicle thermal management system provided by the present application, a first oil pump is further provided in the transmission oil chamber, the first control valve is a first three-way valve, and the first three-way valve is connected to the internal heat exchanger through a first pipeline, connected to the first oil pump through a second pipeline, and connected to the transmission components through a third pipeline;

[0013] The first oil pump is used to drive the lubricating oil in the transmission oil chamber to flow;

[0014] The first three-way valve is used to connect any two of the first pipeline, the second pipeline and the third pipeline.

[0015] According to the above technical means, since the first control valve of the present application is a three-way valve and can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, so as to realize the switching of the heat circulation and stop between the transmission and the internal heat exchanger. Only one pipeline is needed to realize the thermal management of the transmission in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0016] Furthermore, in the vehicle thermal management system provided by the present application, the first three-way valve is used to perform thermal management actions on the transmission oil chamber according to the real-time oil temperature of the transmission oil chamber, the preset upper threshold value of the transmission oil temperature and the preset lower threshold value of the transmission oil temperature.

[0017] According to the above technical means, since the vehicle thermal management system provided by the present application can limit the transmission oil temperature through the first three-way valve, the service life of the transmission is ensured while ensuring that the transmission maintains a high working efficiency.

[0018] Furthermore, in the vehicle thermal management system provided by the present application, motor components, a motor oil temperature sensor and a second control valve are provided in the motor oil chamber;

[0019] The second control valve is connected to the motor component, the external oil cooler, and the internal heat exchanger, and is configured to connect the motor, the internal heat exchanger, and the external oil cooler according to the real-time oil temperature of the motor oil chamber measured by the motor oil temperature sensor.

[0020] According to the above technical means, since the thermal management system provided by the present application can also achieve the thermal management of the motor through the second control valve, it can control the lubricating oil temperature in the oil chamber where the motor is located, ensuring that the working temperature of the motor is as low as possible and improving the working efficiency of the motor.

[0021] Furthermore, in the vehicle thermal management system provided by the present application, a second oil pump is further provided in the motor oil chamber. The second control valve is a second three-way valve. The second three-way valve is connected to the internal heat exchanger through a fourth pipeline, connected to the second oil pump through a fifth pipeline, and connected to the motor component through a sixth pipeline;

[0022] The second oil pump is configured to drive the lubricating oil in the connecting pipeline in the motor oil chamber to flow;

[0023] The second three-way valve is configured to connect any two of the fourth pipeline, the fifth pipeline, and the sixth pipeline.

[0024] According to the above technical means, since the second control valve of the present application is a three-way valve and can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, thereby realizing the switching of the heat circulation and stop between the motor and the internal heat exchanger. Only one pipeline is required to achieve the thermal management of the motor in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0025] Furthermore, in the vehicle thermal management system provided by the present application, it further includes: a battery pack, a third control valve, and a battery temperature sensor;

[0026] The third control valve is connected to the battery pack and the external oil cooler, and is configured to connect the battery pack and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor.

[0027] According to the above technical means, since the vehicle thermal management system provided by the present application can heat the battery through the third control valve, and save the heat of the vehicle motor for heating the battery, it avoids the waste of the vehicle's own resources for heating the battery to ensure the normal use of the battery, and reduces the power requirement of the vehicle's heater.

[0028] Furthermore, in the vehicle thermal management system provided by the present application, it further includes: a low-temperature radiator;

[0029] The third control valve is also connected to the low-temperature radiator and is used to connect the low-temperature radiator and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor;

[0030] The low-temperature radiator is used to transfer the heat obtained by the external oil cooler from the electric drive transmission assembly to the outside of the system.

[0031] According to the above technical means, since the vehicle thermal management system provided in this application is connected with a low-temperature radiator, it can transfer the heat that the transmission and the battery pack do not need to the outside of the vehicle, ensuring that the working environment of the vehicle's motor is as low as possible and improving the working efficiency of the motor.

[0032] Further, in the vehicle thermal management system provided in this application, the external oil cooler is connected with a water pump, the third control valve is a third three-way valve, the third three-way valve is connected to the external oil cooler through a seventh pipeline, connected to the battery pack through an eighth pipeline, and connected to the low-temperature radiator through a ninth pipeline;

[0033] The water pump is used to drive the flow of water in the pipeline connected to the external oil cooler;

[0034] The third three-way valve is used to connect any two of the seventh pipeline, the eighth pipeline and the ninth pipeline.

[0035] According to the above technical means, since the third control valve of this application is a three-way valve and can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, so as to realize the switching of the heat circulation and stop of the electric drive transmission assembly and the battery pack. Only one pipeline is needed to realize the thermal management of the electric drive transmission and the battery pack in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0036] In a second aspect, the present invention also provides a vehicle thermal management method for controlling the transmission thermal management system according to any one of the first aspects, including:

[0037] Obtain the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack;

[0038] Judge the transmission temperature according to the real-time oil temperature of the transmission oil chamber, the preset upper threshold of the transmission oil temperature and the preset lower threshold of the transmission oil temperature, and obtain the transmission oil temperature judgment result;

[0039] Execute the thermal management action of the electric drive transmission assembly according to the transmission oil temperature judgment result;

[0040] Judging the battery temperature based on the real-time temperature of the battery pack and a preset battery temperature threshold to obtain a battery temperature judgment result;

[0041] Performing a thermal management action on the battery pack according to the battery temperature judgment result.

[0042] In a third aspect, the present invention further provides a vehicle thermal management device, including:

[0043] A temperature measurement module for obtaining the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack;

[0044] A transmission oil temperature judgment module for judging the transmission temperature according to the real-time oil temperature of the transmission oil chamber, a preset upper threshold of the transmission oil temperature, and a preset lower threshold of the transmission oil temperature to obtain a transmission oil temperature judgment result;

[0045] A transmission thermal management module for performing a thermal management action on the electric drive transmission assembly according to the transmission oil temperature judgment result;

[0046] A battery temperature judgment module for judging the battery temperature according to the real-time temperature of the battery pack and a preset battery temperature threshold to obtain a battery temperature judgment result;

[0047] A battery thermal management module for performing a thermal management action on the battery pack according to the battery temperature judgment result.

[0048] In a fourth aspect, the present invention further provides a vehicle, including:

[0049] At least one processor; and,

[0050] A memory communicatively connected to the at least one processor; wherein,

[0051] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can implement the vehicle thermal management method described above.

[0052] In a fifth aspect, the present invention further provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, it can implement the vehicle thermal management method described above.

[0053] Advantages of the present invention:

[0054] The vehicle thermal management system provided by this application can transfer the heat in the transmission oil chamber to the motor oil chamber through the built-in heat exchanger and transfer it to the outside of the electric drive transmission assembly through the external oil cooler. Since the transmission and the motor do not need to share an oil chamber in the technical solution provided by this application, on the premise of meeting the transmission oil temperature, the oil temperature in the motor oil chamber can be reduced through the external oil cooler, improving the working efficiency of the electric drive transmission assembly and thus enhancing the overall driving efficiency of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0056] Figure 1 is one of the schematic diagrams of a vehicle thermal management system provided by this application;

[0057] Figure 2 is the second schematic diagram of a vehicle thermal management system provided by this application;

[0058] Figure 3 is the schematic diagram of a vehicle thermal management logic judgment process provided by this application;

[0059] Figure 4 is the schematic diagram of the pipeline connection of the vehicle thermal management system in the internal circulation low-temperature heating mode provided by this application;

[0060] Figure 5 is the schematic diagram of the pipeline connection of the vehicle thermal management system in the external circulation high-temperature cooling mode provided by this application;

[0061] Figure 6 is the schematic diagram of the pipeline connection of the vehicle thermal management system in the external circulation low-temperature heating mode provided by this application;

[0062] Figure 7 is the schematic diagram of the pipeline connection of the vehicle thermal management system in the full circulation low-temperature heating mode provided by this application;

[0063] Figure 8 is the schematic diagram of the pipeline connection of the vehicle thermal management system in the full circulation high-temperature cooling mode provided by this application;

[0064] Figure 9 is the schematic diagram of the vehicle thermal management method provided by the embodiment of this application;

[0065] Figure 10 is the schematic diagram of the vehicle thermal management device provided by the embodiment of this application;

[0066] Figure 11 is the schematic diagram of the structure of a vehicle provided by the embodiment of this application. Detailed implementation manners

[0067] The following will describe the implementation manners of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for explaining the present invention and not for limiting the protection scope of the present invention.

[0068] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0069] For an electric drive transmission integrated with a drive motor, the prior art often uses the same type of oil, the same oil chamber, and the same oil circuit for the transmission and the motor oil, and the thermal management methods are the same. However, the working efficiencies of the vehicle's transmission and motor have different requirements for the temperature of the lubricating oil. The working efficiency of the transmission requires the lubricating oil temperature to be within a certain range, while the working efficiency of the motor requires the lubricating oil temperature to be as low as possible. Using the same thermal management method for the transmission and the motor results in low working efficiency of the motor. In addition, the battery on the vehicle, especially the battery of an electric vehicle, often has certain temperature requirements. The prior art often uses a dedicated heater to heat the battery to ensure its operation. However, this type of battery has certain power requirements for the heater, wasting the energy of the vehicle itself.

[0070] The vehicle thermal management system and method provided in this application can transfer the heat in the transmission oil chamber to the motor oil chamber through an internal heat exchanger and transfer it outside the electric drive transmission assembly through an external oil cooler to solve the problems of the prior art. Since the transmission and the motor in the technical solution provided in this application do not need to share the oil chamber, on the premise of meeting the transmission oil temperature, the oil temperature in the motor oil chamber can be reduced through the external oil cooler, improving the working efficiency of the electric drive transmission assembly and thus improving the overall driving efficiency of the vehicle.

[0071] In addition, the heat generated during the normal operation of the motor and its heat-generating characteristics are effectively utilized for heating the transmission oil temperature and the battery pack oil temperature, which can reduce the power requirement of the vehicle's heater and save the energy of the vehicle itself.

[0072] The first implementation manner of this application relates to a vehicle thermal management system, as Figure 1 shown, including: an electric drive transmission assembly and an external oil cooler;

[0073] The electric drive transmission assembly includes a transmission oil chamber, a built-in heat exchanger, and a motor oil chamber. The transmission oil chamber is provided with transmission components, a transmission oil temperature sensor, and a first control valve;

[0074] The built-in heat exchanger is used to achieve heat transfer between the transmission oil chamber and the motor oil chamber;

[0075] The first control valve is connected to the transmission components and the built-in heat exchanger, and is used to connect the transmission components and the built-in heat exchanger according to the real-time oil temperature of the transmission oil chamber measured by the transmission oil temperature sensor;

[0076] The external oil cooler is used to transfer the heat of the motor oil chamber to the outside of the electric drive transmission assembly.

[0077] Specifically, the vehicle thermal management system provided in this application is mainly used for thermal management of the electric drive transmission assembly 12. The electric drive transmission assembly 12 internally includes the transmission and the motor of the assembly. In the vehicle thermal management system provided in this application, a transmission oil chamber 10, a motor oil chamber 11, and a built-in heat exchanger 5 connecting the transmission oil chamber 10 and the motor oil chamber 11 are provided in the electric drive transmission assembly 12. The transmission oil chamber 10 includes transmission components 4, such as a transmission shaft system mechanism and a transmission shift mechanism, etc., a transmission oil pan 1 equipped with an oil temperature sensor, and a first control valve 21. One side of the transmission component 4 is connected to one side of the transmission oil pan 1 through a pipeline, and the other side of the transmission oil pan is connected to one end of the first control valve 21 through a pipeline. The other two ends of the first control valve 21 are respectively connected to the other side of the transmission component 4 and the built-in heat exchanger 5 through pipelines. The transmission component 4 is also connected to the built-in heat exchanger 5 through a pipeline, and is used to form a loop with the pipeline connecting the transmission component 4 by the first control valve 21 and the pipeline connecting the built-in heat exchanger 5 by the first control valve 21. The built-in heat exchanger 5 is used to achieve heat exchange between the transmission oil chamber 10 and the motor oil chamber 11. The motor oil chamber 11 is connected to an external oil cooler 13 outside the electric drive transmission assembly 12 through a pipeline. The external oil cooler 13 is used to dissipate the heat in the motor oil chamber 11, so as to achieve thermal management of the transmission oil chamber 10 and the motor oil chamber 11 in the electric drive transmission assembly 12.

[0078] Among them, the thermal management method of the transmission oil chamber 10 and the motor oil chamber 11 can be realized by, but not limited to, the following methods:

[0079] The oil temperature sensor located in the transmission oil pan 1 continuously detects the lubricating oil temperature in the transmission oil chamber 10. When the oil temperature sensor detects that the lubricating oil temperature in the transmission oil chamber 10 does not meet the temperature range of the lubricating oil during transmission operation, the vehicle thermal management system controls the first control valve 21 to connect the pipeline connected to the transmission oil pan 1 and the pipeline connected to the built-in heat exchanger 5. At this time, a lubricating oil pipeline loop is formed from the transmission components 4 to the transmission oil pan 1, then to the first control valve 21, then to the built-in heat exchanger 5, and finally back to the transmission components 4, realizing the heat exchange between the transmission oil chamber 10 and the motor oil chamber 11. For example, when the lubricating oil temperature in the transmission oil chamber is higher than the temperature range of the lubricating oil during transmission operation, the lubricating oil continuously passing through the built-in heat exchanger 5 transfers heat from the transmission oil chamber 10 to the motor oil chamber 11, and transfers heat from the motor oil chamber 11 to the external oil cooler 13, realizing the cooling of the transmission oil chamber 10 at high temperature; when the lubricating oil temperature in the transmission oil chamber is lower than the temperature range of the lubricating oil during transmission operation, the lubricating oil continuously passing through the built-in heat exchanger 5 transfers heat from the motor oil chamber 11 to the transmission oil chamber 10, realizing the heating of the transmission oil chamber 10 at low temperature. When the lubricating oil temperature in the transmission oil chamber 10 is within the temperature range of the lubricating oil during transmission operation, the thermal management system controls the first control valve 21 to cut off the pipeline connection between the first control valve 21 and the built-in heat exchanger 5, avoiding heat loss in the transmission oil chamber.

[0080] Based on the above embodiments, as Figure 2 shown, in the vehicle thermal management system provided by the present application, a first oil pump is further provided in the transmission oil chamber, the first control valve is a first three-way valve, the first three-way valve is connected to the built-in heat exchanger through a first pipeline, connected to the first oil pump through a second pipeline, and connected to the transmission components through a third pipeline;

[0081] The first oil pump is used to drive the lubricating oil in the transmission oil chamber to flow;

[0082] The first three-way valve is used to connect any two of the first pipeline, the second pipeline and the third pipeline.

[0083] Specifically, the first control valve 21 is a first three-way valve 3. In order to drive the lubricating oil to flow in the pipeline, a first oil pump 2 is provided on the pipeline between the transmission oil pan 1 and the first three-way valve 3. The C port of the first three-way valve 3 is connected to the built-in heat exchanger 5 through a first pipeline, the A port of the first three-way valve 3 is connected to the first oil pump 2 through a second pipeline, and the B port of the first three-way valve 3 is connected to the transmission parts 4 through a third pipeline.

[0084] Based on the above embodiments, since the first control valve 21 of the present application is a three-way valve that can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, thereby realizing the switching of the heat circulation and stop between the transmission and the built-in heat exchanger. Only one pipeline is required to achieve the thermal management of the transmission in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0085] Based on the above embodiments, in the vehicle thermal management system provided by the present application, the first three-way valve is used to perform thermal management actions on the transmission oil chamber according to the real-time oil temperature of the transmission oil chamber, the preset upper threshold value of the transmission oil temperature, and the preset lower threshold value of the transmission oil temperature.

[0086] Specifically, the thermal management system controls the connection state of the pipelines corresponding to any two of the A port, B port, and C port in the first three-way valve 3 to realize the thermal management actions on the transmission oil chamber 10 and the motor oil chamber 11.

[0087] Among them, the thermal management method for the transmission oil chamber 10 and the motor oil chamber 11 can be implemented in, but not limited to, the following ways:

[0088] The oil temperature sensor located at the transmission oil pan 1 real-time detects the lubricating oil temperature in the transmission oil chamber 10. When the oil temperature sensor detects that the lubricating oil temperature in the transmission oil chamber 10 does not meet the temperature range of the lubricating oil during transmission operation, the vehicle thermal management system controls the connection of the pipelines of the A port and the C port in the first three-way valve 3. At this time, a lubricating oil pipeline loop is formed from the transmission parts 4 to the transmission oil pan 1, then to the first oil pump 2, then to the first three-way valve 3, then to the built-in heat exchanger 5, and finally back to the transmission parts 4. The first oil pump 2 drives the lubricating oil in the loop to circulate and flow, realizing the heat exchange with the motor oil chamber 11. For example, when the lubricating oil temperature in the transmission oil chamber is higher than the temperature range of the lubricating oil during transmission operation, the lubricating oil continuously passing through the built-in heat exchanger 5 transfers the heat from the transmission oil chamber 10 to the motor oil chamber 11, and transfers the heat from the motor oil chamber 11 to the external oil cooler 13, realizing the cooling of the transmission oil chamber 10 at high temperature; when the lubricating oil temperature in the transmission oil chamber is lower than the temperature range of the lubricating oil during transmission operation, the lubricating oil continuously passing through the built-in heat exchanger 5 transfers the heat from the motor oil chamber 11 to the transmission oil chamber 10, realizing the heating of the transmission oil chamber 10 at low temperature. And when the lubricating oil temperature in the transmission oil chamber 10 is within the temperature range of the lubricating oil during transmission operation, the connection with the built-in heat exchanger 5 is cut off to avoid the loss of heat in the transmission oil chamber.

[0089] Based on the above embodiments, in the vehicle thermal management system provided by the present application, the transmission oil temperature can be limited by the first three-way valve, ensuring the service life of the transmission and ensuring that the transmission maintains a high working efficiency.

[0090] Based on the above embodiments, in the vehicle thermal management system provided by the present application, the motor oil chamber is provided with motor components, a motor oil temperature sensor, and a second control valve.

[0091] The second control valve is connected to the motor components, the external oil cooler, and the internal heat exchanger, and is used to connect the motor, the internal heat exchanger, and the external oil cooler according to the real-time oil temperature of the motor oil chamber measured by the motor oil temperature sensor.

[0092] Specifically, the motor oil chamber 11 includes motor components 6, such as mechanisms in the motor like the stator, rotor, copper busbars, etc., the motor oil pan 9 equipped with an oil temperature sensor, and the second control valve 22. One side of the motor components 6 is connected to an external oil cooler 13 outside the electric drive transmission assembly 12 through a pipeline. The other side of the external oil cooler 13 is connected to one side of the motor oil pan 9 through a pipeline. The other side of the motor oil pan 9 is connected to one end of the second control valve 22 through a pipeline. The other two ends of the second control valve 22 are respectively connected to the other side of the motor components 6 and the internal heat exchanger 5 through pipelines. The motor components 6 are also connected to the internal heat exchanger 5 through a pipeline, and are used to form a loop with the pipeline connecting the motor components 6 by the second control valve 22 and the pipeline connecting the second control valve 22 to the internal heat exchanger 5.

[0093] Based on the above embodiments, since the thermal management system provided by the present application can also achieve thermal management of the motor through the second control valve 22, it can control the lubricating oil temperature in the oil chamber where the motor is located, ensuring that the working temperature of the motor is as low as possible and improving the working efficiency of the motor.

[0094] Based on the above embodiments, in the vehicle thermal management system provided by the present application, a second oil pump is further provided in the motor oil chamber. The second control valve is a second three-way valve. The second three-way valve is connected to the internal heat exchanger through a fourth pipeline, connected to the second oil pump through a fifth pipeline, and connected to the motor components through a sixth pipeline.

[0095] The second oil pump is used to drive the lubricating oil in the connecting pipelines in the motor oil chamber to flow.

[0096] The second three-way valve is used to connect any two of the fourth pipeline, the fifth pipeline, and the sixth pipeline.

[0097] Specifically, the second control valve 22 is a second three-way valve 7. To drive the lubricating oil to flow in the pipeline, a second oil pump 8 is provided on the pipeline between the motor oil pan 9 and the second three-way valve 7. The C port of the second three-way valve 7 is connected to the built-in heat exchanger 5 through the fourth pipeline, the A port of the second three-way valve 7 is connected to the second oil pump 8 through the fifth pipeline, and the B port of the second three-way valve 7 is connected to the motor components 6 through the sixth pipeline.

[0098] The thermal management method for the transmission oil chamber 10 and the motor oil chamber 11 can be implemented in but not limited to the following ways:

[0099] When the temperature of the lubricating oil in the transmission oil chamber 10 is lower than the temperature range of the lubricating oil during the operation of the transmission, after the pipeline where the A port and the C port of the first three-way valve 3 are connected to form a loop, the vehicle thermal management system controls the pipeline where the A port of the second three-way valve 7 is located to be connected to the pipeline where the C port is located to form a loop. At this time, the lubricating oil in the motor oil chamber 11 circulates through the built-in heat exchanger 5 and transfers heat to the lubricating oil that circulates through the built-in heat exchanger 5 in the transmission oil chamber 10, realizing the temperature increase of the lubricating oil in the transmission oil chamber.

[0100] When the temperature of the lubricating oil in the transmission oil chamber 10 is higher than the temperature range of the lubricating oil during the operation of the transmission, the vehicle thermal management system controls the A port and the C port of the second three-way valve 7 to be connected to form a loop. At this time, the lubricating oil in the transmission oil chamber 10 circulates through the built-in heat exchanger 5 and transfers heat to the lubricating oil that circulates through the built-in heat exchanger 5 in the motor oil chamber 11, realizing the temperature decrease of the lubricating oil in the transmission oil chamber.

[0101] When the temperature of the lubricating oil in the transmission oil chamber 10 is within the temperature range of the lubricating oil during the operation of the transmission, when the pipeline where the B port of the first three-way valve 3 is located and the pipeline where the A port are connected, the thermal management system can control the pipelines where the A port and the B port in the second three-way valve 7 are connected to form a lubricating oil loop from the motor components 6 to the external oil cooler 13, then to the motor oil pan 9, then to the second oil pump 8, then to the second three-way valve 7, and finally back to the motor components 6, discharging the heat of the lubricating oil in the motor oil chamber 11 from the external oil cooler 13.

[0102] On the basis of the above embodiments, since the second control valve 22 of the present application is a three-way valve and can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, thereby realizing the switching of the heat circulation and stop between the motor and the built-in heat exchanger. Only one pipeline is required to realize the thermal management of the motor in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0103] On the basis of the above embodiments, in the vehicle thermal management system provided by the present application, it further includes: a battery pack, a third control valve, and a battery temperature sensor;

[0104] The third control valve is connected to the battery pack and the external oil cooler, and is used to connect the battery pack and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor.

[0105] Specifically, the vehicle management system further includes a battery pack 17 and a third control valve 23. In the vehicle thermal management system provided in the present application, there is a pipeline circuit for heating the battery in the external oil cooler 13. One end of the external oil cooler 13 is connected to the third control valve 23 through a pipeline, the other end of the third control valve 23 is connected to the battery pack 17 through a pipeline, and the battery pack 17 is connected to the external oil cooler through a pipeline to form a circuit. A battery temperature sensor is provided on the battery pack 17. When it is detected that the battery temperature is lower than the battery operating temperature, the vehicle thermal management system connects the circuit between the battery pack 17 and the external oil cooler 13 through the third control valve 23, and the heat transferred from the electric drive transmission assembly 12 is transferred from the external oil cooler 13 to the battery pack 17 along the circuit, realizing the thermal management of the battery pack 17.

[0106] On the basis of the above embodiment, since the vehicle thermal management system provided in the present application can heat the battery through the third control valve 23, the heat of the vehicle motor is saved for heating the battery, avoiding the waste of the vehicle's own resources for heating the battery to ensure the normal use of the battery, and reducing the power requirement of the vehicle heater.

[0107] On the basis of the above embodiment, in the vehicle thermal management system provided in the present application, it further includes: a low-temperature radiator;

[0108] The third control valve is further connected to the low-temperature radiator, and is used to connect the low-temperature radiator and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor;

[0109] The low-temperature radiator is used to transfer the heat obtained by the external oil cooler from the electric drive transmission assembly to the outside of the system.

[0110] Specifically, the vehicle management system further includes a low-temperature radiator 16. The third end of the third control valve 23 is connected to one end of the low-temperature sensor 16 through a pipeline, and the other end of the low-temperature sensor 16 is connected to the external oil cooler 13 through a pipeline. When the battery temperature sensor detects that the temperature of the battery pack 17 reaches the battery operating temperature, the vehicle thermal management system controls the third control valve 23 to disconnect the connection with the pipeline where the battery pack 17 is located and connect with the pipeline where the low-temperature radiator 16 is located, so as to dissipate the heat in the external oil cooler.

[0111] Based on the above embodiments, since the vehicle thermal management system provided by the present application is connected with a low-temperature radiator, it can transfer the heat that the transmission and the battery pack do not need to the outside of the vehicle, ensuring that the working environment of the motor of the vehicle is as low as possible and improving the working efficiency of the motor.

[0112] Based on the above embodiments, in the vehicle thermal management system provided by the present application, the external oil cooler is connected with a water pump, the third control valve is a third three-way valve, the third three-way valve is connected with the external oil cooler through a seventh pipeline, connected with the battery pack through an eighth pipeline, and connected with the low-temperature radiator through a ninth pipeline;

[0113] The water pump is used to drive the flow of water in the pipeline connecting the external oil cooler;

[0114] The third three-way valve is used to connect any two of the seventh pipeline, the eighth pipeline and the ninth pipeline.

[0115] Specifically, in order to drive the water to flow in the pipeline, a water pump 14 is provided on the pipeline between the external oil cooler 13 and the third three-way valve 15. The A port of the third three-way valve 15 is connected with the external oil cooler 13 through a seventh pipeline, the B port of the third three-way valve 15 is connected with the battery pack 17 through an eighth pipeline, and the C port of the third three-way valve 15 is connected with the low-temperature radiator 16 through a ninth pipeline.

[0116] The thermal management method of the external oil cooler 13 and the battery pack 17 can be implemented by but not limited to the following methods:

[0117] When the battery temperature sensor detects that the temperature of the battery pack 17 is lower than the battery operating temperature, the vehicle thermal management system controls the pipelines where the A port and the B port are located in the third three-way valve to be connected to form a loop, and the water pump 14 drives the water to circulate between the external oil cooler 13 and the battery pack 17 to realize the temperature rise of the battery pack 17. When the battery temperature sensor detects that the temperature of the battery pack 17 is higher than the battery operating temperature, the vehicle thermal management system controls the pipelines where the A port and the C port are located in the third three-way valve to be connected to form a loop, and the water pump 14 drives the water to circulate between the external oil cooler 13 and the low-temperature radiator 16 to realize the heat dissipation in the external oil cooler 13.

[0118] Based on the above embodiments, since the third control valve 23 of the present application is a three-way valve and can connect any two of the three pipelines, it is convenient for the vehicle thermal management system to switch according to requirements. When two of the pipelines are connected, the third pipeline is naturally cut off, so as to realize the switching of the heat circulation and stop of the electric drive transmission assembly and the battery pack. Only one pipeline is required to realize the thermal management of the electric drive transmission and the battery pack in the vehicle, reducing the pipeline requirements, lowering the production cost, and improving the thermal management efficiency.

[0119] Based on the above embodiments, as Figure 3 shown, the present application also provides a schematic diagram of a vehicle thermal management process:

[0120] Obtain the real-time oil temperature T of the transmission oil chamber 10 in the electric drive transmission assembly through the oil temperature sensor located at the transmission oil pan a , and obtain the real-time battery temperature Tc of the battery pack 17 through the battery temperature sensor. First, judge the real-time oil temperature T of the transmission oil chamber 10 a . When it is judged that T a is between the lower threshold T1 of the transmission oil temperature and the upper threshold T2 of the transmission oil temperature, judge the temperature of the real-time battery temperature Tc. When the real-time battery temperature Tc is less than the battery operating temperature T3, the vehicle thermal management system starts the external circulation low-temperature heating mode. When the real-time battery temperature Tc is greater than the battery operating temperature T3, the vehicle thermal management system starts the external circulation high-temperature cooling mode. When it is judged that T a is less than the lower threshold T1 of the transmission oil temperature, judge the temperature of the real-time battery temperature Tc. When the real-time battery temperature Tc is less than the battery operating temperature T3, the vehicle thermal management system starts the full circulation low-temperature heating mode. When the real-time battery temperature Tc is greater than the battery operating temperature T3, the vehicle thermal management system starts the internal circulation low-temperature heating mode. When it is judged that T a is greater than the upper threshold T2 of the transmission oil temperature, the vehicle thermal management system starts the full circulation high-temperature cooling mode. T1, T2, and T3 are set according to the actual working requirements of the vehicle. For example, T1 is set to 60 °C, T2 is set to 90 °C, and T3 is set to 10 °C. In order to improve the working efficiency of the electric drive transmission, the built-in heat exchanger 5 continuously exchanges the heat between the transmission oil chamber 10 and the motor oil chamber 11, and discharges the heat outside the electric drive transmission through the external oil cooler 13. For example, when the oil temperatures of the transmission oil chamber 10 and the motor oil chamber 11 are the same and close to the lower limit of the lubricating oil working temperature of the transmission oil chamber 10, while ensuring the normal operation of the transmission, the temperature of the oil chamber where the motor is located is reduced as much as possible to improve the working efficiency of the motor. In addition, in order to ensure the working efficiency of the battery, the heat discharged from the external oil cooler 13 is used to heat the battery pack 17, saving the energy of the vehicle itself.

[0121] Among them, the internal circulation low-temperature heating mode is as Figure 4 shown. At this time, the real-time oil temperature T of the transmission oil chamber 10 a is less than or equal to the lower threshold T1 of the transmission oil temperature, and the real-time battery temperature T cWhen the temperature is higher than the battery operating temperature T3, the vehicle thermal management system adjusts the connection status of the first three-way valve 3, the second three-way valve 7, and the third three-way valve 15. Specifically, the pipelines where the A port and the C port of the first three-way valve 3 are located are connected, and the pipeline where the B port is located is disconnected; for the external circulation liquid path, that is, the circulation pipeline connecting the external oil cooler 13, the water pump 14, the battery pack 17, and the low-temperature radiator 16 is in a non-operating state. At this time, the built-in heat exchanger 5 transfers the heat generated during the operation of the motor from the motor oil chamber 11 to the transmission oil chamber 10, realizing the internal heat circulation process within the electric drive transmission assembly 12 and achieving the heating effect on the transmission.

[0122] The external circulation high-temperature cooling mode is as Figure 5 shown. At this time, the real-time oil temperature T of the transmission oil chamber 10 a is less than or equal to the transmission oil temperature upper limit threshold T2, greater than or equal to the transmission oil temperature lower limit threshold T1, and the real-time temperature T of the battery pack c is higher than the battery operating temperature T3. The vehicle thermal management system adjusts the connection status of the first three-way valve 3, the second three-way valve 7, and the third three-way valve 15. Specifically, the pipelines where the A port and the B port of the first three-way valve 3 are located are connected, and the pipeline where the C port is located is disconnected; the pipelines where the A port and the B port of the second three-way valve 7 are located are connected, and the pipeline where the C port is located is disconnected; the pipelines where the A port and the C port of the third three-way valve 15 are located are connected, and the pipeline where the B port is located is disconnected. At this time, no heat exchange occurs between the transmission oil chamber 10 and the motor oil chamber 11. The heat generated during the operation of the motor is transferred to the external circulation loop of the vehicle thermal management system through the external oil cooler 13. The water carrying the heat generated during the operation of the motor reaches the low-temperature radiator 16 through the water pump 14 to discharge the heat and then returns to the external oil cooler 13, achieving the circulating cooling effect of the motor while reducing the motor operating environment temperature.

[0123] The external circulation low-temperature heating mode is as Figure 6 shown. At this time, the real-time oil temperature T of the transmission oil chamber 10 a is less than or equal to the transmission oil temperature upper limit threshold T2, greater than or equal to the transmission oil temperature lower limit threshold T1, and the real-time temperature T of the battery pack c is less than or equal to the battery operating temperature T3. The vehicle thermal management system adjusts the connection status of the first three-way valve 3, the second three-way valve 7, and the third three-way valve 15. Specifically, the pipelines where the A port and the B port of the first three-way valve 3 are located are connected, and the pipeline where the C port is located is disconnected; the pipelines where the A port and the B port of the second three-way valve 7 are located are connected, and the pipeline where the C port is located is disconnected; the pipelines where the A port and the B port of the third three-way valve 15 are located are connected, and the pipeline where the C port is located is disconnected. At this time, the external oil cooler 13 transfers the heat generated during the operation of the motor to the battery pack 17, achieving the warming action of the battery pack while reducing the motor operating environment temperature.

[0124] The full circulation low-temperature heating mode is as Figure 7 shown. At this time, the real-time oil temperature T of the transmission oil chamber 10a is less than or equal to the lower limit threshold T1 of the transmission oil temperature, and the real-time temperature T of the battery pack c is less than or equal to the battery operating temperature T3, and the vehicle thermal management system adjusts the connection status of the first three-way valve 3, the second three-way valve 7, and the third three-way valve 15. Specifically, the pipelines where the A port and the C port of the first three-way valve 3 are located are connected, and the pipeline where the B port is located is disconnected; the pipelines where the A port and the C port of the second three-way valve 7 are located are connected, and the pipeline where the B port is located is disconnected; the pipelines where the A port and the B port of the third three-way valve 15 are located are connected, and the pipeline where the C port is located is disconnected. At this time, the external oil cooler 13 transfers the heat generated during the operation of the motor to the battery pack 17 to increase the temperature of the battery pack 17; the internal heat exchanger 5 transfers the heat generated during the operation of the motor to the transmission oil chamber 10 to increase the temperature of the transmission oil 10.

[0125] The full-cycle high-temperature cooling mode is as Figure 8 shown. At this time, the real-time oil temperature Ta of the transmission oil chamber 10 is greater than or equal to the upper limit threshold T2 of the transmission oil temperature, and the vehicle thermal management system adjusts the connection status of the first three-way valve 3, the second three-way valve 7, and the third three-way valve 15. Specifically, the pipelines where the A port and the C port of the first three-way valve 3 are located are connected, and the pipeline where the B port is located is disconnected; the pipelines where the A port and the C port of the second three-way valve 7 are located are connected, and the pipeline where the B port is located is disconnected; the pipelines where the A port and the C port of the third three-way valve 15 are located are connected, and the pipeline where the B port is located is disconnected. At this time, priority is given to reducing the temperature of the lubricating oil in the transmission oil chamber 10. The internal heat exchanger 5 transfers the heat in the transmission oil chamber 10 to the motor oil chamber 11, and the external oil cooler 13 transfers the heat in the motor oil chamber from the electric drive transmission assembly 12 to the external circulation loop and transfers it to the low-temperature radiator 16 for cooling.

[0126] The second embodiment of the present application relates to a vehicle thermal management method, as Figure 9 shown, including:

[0127] Step 101: Obtain the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack;

[0128] Step 102: Perform transmission temperature judgment according to the real-time oil temperature of the transmission oil chamber, the preset upper limit threshold of the transmission oil temperature, and the preset lower limit threshold of the transmission oil temperature, and obtain the transmission oil temperature judgment result;

[0129] Step 103: Perform the thermal management action of the electric drive transmission assembly according to the transmission oil temperature judgment result;

[0130] Step 104: Perform battery temperature judgment according to the real-time temperature of the battery pack and the preset battery temperature threshold, and obtain the battery temperature judgment result;

[0131] Step 105: Perform the thermal management action of the battery pack according to the battery temperature judgment result.

[0132] The third embodiment of the present application relates to a vehicle thermal management device, as Figure 10 shown, including:

[0133] A temperature measurement module 201 for obtaining the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack;

[0134] A transmission oil temperature judgment module 202 for performing transmission temperature judgment according to the real-time oil temperature of the transmission oil chamber, a preset upper threshold value of the transmission oil temperature, and a preset lower threshold value of the transmission oil temperature, and obtaining a transmission oil temperature judgment result;

[0135] A transmission thermal management module 203 for performing the thermal management action of the electric drive transmission assembly according to the transmission oil temperature judgment result;

[0136] A battery temperature judgment module 204 for performing battery temperature judgment according to the real-time temperature of the battery pack and a preset battery temperature threshold, and obtaining a battery temperature judgment result;

[0137] A battery thermal management module 205 for performing the thermal management action of the battery pack according to the battery temperature judgment result.

[0138] The fourth embodiment of the present application relates to a vehicle, as Figure 11 shown, including:

[0139] At least one processor 301; and,

[0140] A memory 302 communicatively connected to the at least one processor 301; wherein,

[0141] The memory 302 stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor 301 so that the at least one processor 301 can implement the vehicle thermal management method described in the second embodiment of the present application.

[0142] Among them, the memory and the processor are connected in a bus manner. The bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors and the memory together. The bus may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, so they will not be further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver may be a component or multiple components, such as multiple receivers and transmitters, and provides a unit for communicating with various other devices on the transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna. Further, the antenna also receives data and transmits the data to the processor.

[0143] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory can be used to store the data used by the processor when executing operations.

[0144] The fifth embodiment of the present application relates to a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the vehicle thermal management method described in the second embodiment of the present application.

[0145] That is, those skilled in the art can understand that all or part of the steps in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program. This program is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical disks, etc., which can store program codes.

[0146] After considering the specification and practicing the application disclosed herein, those skilled in the art will readily think of other implementation schemes of the present application. The present application aims to cover any variations, uses, or adaptive changes of the present application, which follow the general principles of the present application and include common general knowledge or conventional technical means in the technical field not disclosed in this disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0147] It should be understood that the present application is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A vehicle thermal management system, characterized in that, Comprising: An electric drive transmission assembly and an external oil cooler; The electric drive transmission assembly includes a transmission oil chamber, an internal heat exchanger, and a motor oil chamber. The transmission oil chamber is provided with transmission components, a transmission oil temperature sensor, and a first control valve; The internal heat exchanger is used to achieve heat transfer between the transmission oil chamber and the motor oil chamber; The first control valve is connected to the transmission components and the internal heat exchanger, and is used to connect the transmission components and the internal heat exchanger according to the real-time oil temperature of the transmission oil chamber measured by the transmission oil temperature sensor; The external oil cooler is used to transfer the heat of the motor oil chamber outside the electric drive transmission assembly; A first oil pump is further provided in the transmission oil chamber. The first control valve is a first three-way valve. The first three-way valve is connected to the internal heat exchanger through a first pipeline, connected to the first oil pump through a second pipeline, and connected to the transmission components through a third pipeline; The first oil pump is used to drive the lubricating oil in the transmission oil chamber to flow; The first three-way valve is used to connect any two of the first pipeline, the second pipeline, and the third pipeline; The motor oil chamber is provided with motor components, a motor oil temperature sensor, and a second control valve; The second control valve is connected to the motor components, the external oil cooler, and the internal heat exchanger, and is used to connect the motor, the internal heat exchanger, and the external oil cooler according to the real-time oil temperature of the motor oil chamber measured by the motor oil temperature sensor; A second oil pump is further provided in the motor oil chamber. The second control valve is a second three-way valve. The second three-way valve is connected to the internal heat exchanger through a fourth pipeline, connected to the second oil pump through a fifth pipeline, and connected to the motor components through a sixth pipeline; The second oil pump is used to drive the lubricating oil in the connecting pipeline in the motor oil chamber to flow; The second three-way valve is used to connect any two of the fourth pipeline, the fifth pipeline, and the sixth pipeline.

2. The system according to claim 1, wherein The first three-way valve is used to perform heat management actions on the transmission oil chamber according to the real-time oil temperature of the transmission oil chamber, a preset upper threshold of the transmission oil temperature, and a preset lower threshold of the transmission oil temperature.

3. The system according to claim 1, wherein Further comprising: A battery pack, a third control valve, and a battery temperature sensor; The third control valve is connected to the battery pack and the external oil cooler, and is used to connect the battery pack and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor.

4. The system according to claim 3, wherein Further comprising: A low-temperature radiator; The third control valve is further connected to the low-temperature radiator, and is used to connect the low-temperature radiator and the external oil cooler according to the real-time temperature of the battery pack measured by the battery temperature sensor; The low-temperature radiator is used to transfer the heat obtained by the external oil cooler from the electric drive transmission assembly outside the system.

5. The system according to claim 4, wherein The external oil cooler is connected with a water pump. The third control valve is a third three-way valve. The third three-way valve is connected to the external oil cooler through a seventh pipeline, connected to the battery pack through an eighth pipeline, and connected to the low-temperature radiator through a ninth pipeline; The water pump is used to drive the flow of water in the external oil cooler connection pipeline; The third three-way valve is used to connect any two of the seventh pipeline, the eighth pipeline and the ninth pipeline.

6. A vehicle thermal management method, characterized in that, A device for controlling the vehicle thermal management system according to any one of claims 1-5, comprising: Obtaining the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack; Judging the transmission temperature according to the real-time oil temperature of the transmission oil chamber, the preset upper limit threshold of the transmission oil temperature and the preset lower limit threshold of the transmission oil temperature, and obtaining a transmission oil temperature judgment result; Performing a thermal management action on the electric drive transmission assembly according to the transmission oil temperature judgment result; Judging the battery temperature according to the real-time temperature of the battery pack and the preset battery temperature threshold, and obtaining a battery temperature judgment result; Performing a thermal management action on the battery pack according to the battery temperature judgment result.

7. A vehicle thermal management device, characterized in that, A device for controlling the vehicle thermal management system according to any one of claims 1-5, comprising: A temperature measurement module for obtaining the real-time oil temperature of the transmission oil chamber and the real-time temperature of the battery pack; A transmission oil temperature judgment module for judging the transmission temperature according to the real-time oil temperature of the transmission oil chamber, the preset upper limit threshold of the transmission oil temperature and the preset lower limit threshold of the transmission oil temperature, and obtaining a transmission oil temperature judgment result; A transmission thermal management module for performing a thermal management action on the electric drive transmission assembly according to the transmission oil temperature judgment result; A battery temperature judgment module for judging the battery temperature according to the real-time temperature of the battery pack and the preset battery temperature threshold, and obtaining a battery temperature judgment result; A battery thermal management module for performing a thermal management action on the battery pack according to the battery temperature judgment result.

8. A vehicle, characterized in that, Comprising: At least one processor; And, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can implement the vehicle thermal management method described in claim 6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the vehicle thermal management method described in claim 6.

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