Thermal management system, method, medium, computer program product, apparatus and vehicle

Abstract

The invention relates to the technical field of heat management, in particular to a heat management system and method, a medium, a computer program product, a device and a vehicle, the heat management system comprises a first circulation loop used for circulating a first heat carrying medium, the first circulation loop comprises a heat exchange plate, and the heat exchange plate is used for being arranged in a compartment; a flow channel is formed in the heat exchange plate and used for allowing a first heat carrying medium to pass through so as to exchange heat with the compartment. The heat exchange plate is integrated in the compartment floor structure, when the heat exchange plate exchanges heat with the compartment for heating, the first heat carrying medium can flow through the heat exchange plate through the flow channel of the heat exchange plate, and heat of the first heat carrying medium is evenly released to the passenger foot area from bottom to top in a heat radiation mode; therefore, the phenomenon that the head is hot and the feet are cold due to heat exchange at the top of a vehicle air conditioner is effectively relieved, the temperature distribution uniformity in the vertical direction in a compartment is improved, and the thermal comfort of passengers is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, and particularly relates to a thermal management system, method, medium, computer program product, device and vehicle. BACKGROUND

[0002] In the related art vehicle thermal management system, an air conditioner heat pump system is generally used to provide heating for the passenger cabin, and the system usually blows hot air in the heat exchanger into the vehicle cabin through a blower to heat the interior of the vehicle cabin.

[0003] However, due to the low density of hot air and the natural upward floating, and the air outlet of the heat exchanger is usually located at the head height of the passenger, the heat is mainly concentrated in the upper space of the vehicle cabin, and the foot and seat area is slowly heated, and even after long-time operation of the system, the obvious vertical temperature stratification phenomenon occurs, which seriously affects the thermal comfort and overall user experience of the passenger. SUMMARY

[0004] The present application aims to provide a thermal management system, method, medium, computer program product, device and vehicle, which aims to solve the problem of vertical temperature stratification of the vehicle cabin and insufficient heating of the passenger's feet in the related art thermal management system.

[0005] In a first aspect, a thermal management system is provided, and the thermal management system comprises: a first circulation loop, the first circulation loop being used to circulate a first heat carrying medium, the first circulation loop comprising a heat exchange plate, the heat exchange plate being used to be arranged in a vehicle cabin. The heat exchange plate is provided with a flow channel, and the flow channel is used to pass the first heat carrying medium to exchange heat with the vehicle cabin.

[0006] The present application integrates the heat exchange plate in the floor structure of the vehicle cabin. When the heat exchange plate exchanges heat with the vehicle cabin for heating, the first heat carrying medium can flow through the heat exchange plate through the flow channel of the heat exchange plate, and the heat of the first heat carrying medium is uniformly released to the foot area of the passenger in a thermal radiation manner from bottom to top, thereby effectively alleviating the "hot head and cold feet" phenomenon caused by the traditional vehicle air conditioner top heat exchange, improving the vertical temperature distribution uniformity in the vehicle cabin, and improving the thermal comfort of the passenger.

[0007] Optionally, the heat exchange plate comprises a uniform heating layer, a main body layer and a heat preservation layer which are stacked in sequence. The flow channel is arranged in the main body layer.

[0008] Optionally, the main body layer is formed with a flow channel cavity, and the main body layer is provided with a plurality of partition walls protruding towards the flow channel cavity on the side facing the heat preservation layer, and the plurality of partition walls separate the flow channel cavity to form the flow channel.

[0009] Optionally, the first circulation loop further comprises a first heat exchanger, which is arranged at the bottom of the vehicle cabin to exchange heat with the air at the bottom of the vehicle cabin.

[0010] Optionally, the first circulation loop further comprises a first heater, which is configured to heat the first heat transfer medium.

[0011] Optionally, the thermal management system further comprises a second circulation loop, which is configured to circulate a second heat transfer medium. The second circulation loop is in heat exchange connection with the first circulation loop, so that the second heat transfer medium exchanges heat with the first heat transfer medium.

[0012] Optionally, the second circulation loop comprises a compressor and a second heat exchanger connected in series; the second heat exchanger is arranged in the vehicle cabin. The compressor is configured to drive the second heat transfer medium to pass through the second heat exchanger to exchange heat with the air in the vehicle cabin.

[0013] Optionally, the second circulation loop further comprises a third heat exchanger, which is arranged outside the vehicle cabin. The compressor is configured to drive the second heat transfer medium to pass through the third heat exchanger to exchange heat with the air outside the vehicle cabin.

[0014] Optionally, the thermal management system further comprises a third circulation loop, which is configured to circulate a third heat transfer medium, and the third circulation loop is in heat exchange connection with a heat source, so that the third heat transfer medium exchanges heat with the heat source. The third circulation loop is also in heat exchange connection with the first circulation loop, so that the third heat transfer medium exchanges heat with the first heat transfer medium.

[0015] Optionally, the thermal management system further comprises a second circulation loop and a third circulation loop, the second circulation loop is configured to circulate a second heat transfer medium, and the third circulation loop is configured to circulate a third heat transfer medium. The third circulation loop is also in heat exchange connection with the second circulation loop, so that the third heat transfer medium exchanges heat with the second heat transfer medium.

[0016] Optionally, the thermal management system further comprises a fourth circulation loop, which is configured to circulate a fourth heat transfer medium, and the fourth circulation loop is in heat exchange connection with a battery, so that the fourth heat transfer medium exchanges heat with the battery. The fourth circulation loop is also in heat exchange connection with the first circulation loop, so that the fourth heat transfer medium exchanges heat with the first heat transfer medium.

[0017] Optionally, the thermal management system further comprises a second circulation loop and a fourth circulation loop, the second circulation loop is configured to circulate a second heat carrier, and the fourth circulation loop is configured to circulate a fourth heat carrier, and the fourth circulation loop is in heat exchange connection with the battery, so that the fourth heat carrier exchanges heat with the battery. The fourth circulation loop is further in heat exchange connection with the second circulation loop, so that the fourth heat carrier exchanges heat with the second heat carrier.

[0018] Optionally, the vehicle cabin comprises a first cabin and a second cabin, and the heat exchange plate is arranged in the first cabin. The fourth circulation loop comprises a fourth heat exchanger, and the fourth heat exchanger is arranged in the second cabin to exchange heat with the second cabin.

[0019] Optionally, the vehicle cabin comprises a first cabin and a second cabin, and the heat exchange plate is arranged in the first cabin. The fourth circulation loop further comprises a second heater configured to heat the second cabin.

[0020] In a second aspect, a thermal management method is further provided, and the thermal management method comprises: When a first preset condition is met, the first heat carrier in the first circulation loop is controlled to flow through the flow channel of the heat exchange plate to heat the vehicle cabin.

[0021] The application can effectively alleviate the "hot head and cold feet" phenomenon caused by the top heat exchange of the traditional vehicle air conditioner, improve the vertical temperature distribution uniformity in the vehicle cabin, and improve the thermal comfort of the passenger, by controlling the first heat carrier to flow through the flow channel of the heat exchange plate when the first preset condition is met, so that heat can be uniformly released to the passenger foot area in a heat radiation manner from bottom to top.

[0022] Optionally, the first preset condition comprises that the outside temperature is less than a first preset temperature.

[0023] Optionally, the first circulation loop further comprises a first heat exchanger arranged on a side of the vehicle cabin close to the heat exchange plate, and the thermal management method further comprises: When a second preset condition is met, the first heat carrier in the first circulation loop is controlled to flow through the first heat exchanger to exchange heat with the vehicle cabin.

[0024] Optionally, the second preset condition comprises that the inside temperature is less than a second preset temperature. The second preset condition comprises that the inside temperature is less than a second preset temperature, and the first preset condition comprises that the inside temperature is greater than a third preset temperature; and the third preset temperature is less than the second preset temperature.

[0025] Optionally, the thermal management system further includes a second circulation loop for circulating a second heat transfer medium, and the thermal management method further includes: When the third preset condition is met, the second heat transfer medium in the second circulation loop is controlled to exchange heat with the first heat transfer medium in the first circulation loop in order to heat the first heat transfer medium.

[0026] Optionally, the third preset condition includes: the outside temperature of the vehicle is lower than the first preset temperature and higher than the fourth preset temperature; The fourth preset temperature is lower than the first preset temperature.

[0027] Optionally, the first circulation loop further includes a first heater, and the thermal management system further includes a second circulation loop for circulating a second heat transfer medium. The thermal management method includes: When the fourth preset condition is met, the second heat transfer medium in the second circulation loop is controlled to exchange heat with the first heat transfer medium in the first circulation loop, and the first heater is controlled to heat the first heat transfer medium.

[0028] Optionally, the fourth preset condition includes: the outside temperature of the vehicle is less than the fifth preset temperature and greater than the fourth preset temperature; The fourth preset temperature is lower than the first preset temperature.

[0029] Optionally, the first circulation loop further includes a first heater, and the thermal management method further includes: When the fifth preset condition is met, the first heater is controlled to heat the first heat transfer medium.

[0030] Optionally, the fifth preset condition includes: the outside temperature of the vehicle is less than the fourth preset temperature.

[0031] Optionally, the carriage includes a first compartment and a second compartment, with the heat exchange plate disposed in the first compartment; the thermal management system further includes a second circulation loop, a fourth circulation loop, and a second heater, the fourth circulation loop including a fourth heat exchanger; the thermal management method further includes: When the sixth preset condition is met, the second circulation loop and the fourth circulation loop are controlled to exchange heat to heat the fourth heat transfer medium, and the heated fourth heat transfer medium flows through the second heater to exchange heat with the second compartment.

[0032] When the seventh preset condition is met, the second heater is controlled to exchange heat with the second compartment in order to heat the second compartment.

[0033] Optionally, the sixth preset condition includes: the outside temperature of the vehicle is lower than the fourth preset temperature; and / or The seventh preset condition includes an outside temperature greater than the fourth preset temperature.

[0034] Optionally, the thermal management system further includes a second circulation loop, the second circulation loop including a second heat exchanger, the second heat exchanger being disposed on the side of the carriage away from the heat exchange plate, and the thermal management method further includes: When the eighth preset condition is met, the second heat exchanger is controlled to dissipate heat from the carriage.

[0035] Optionally, the eighth preset condition includes: the difference between the temperature of the second heat exchanger and the average temperature at the heat exchange plate is greater than the sixth preset temperature.

[0036] Optionally, the thermal management system further includes a third circulation loop, and the thermal management method further includes: The third heat transfer medium in the third circulation loop is controlled to heat the first heat transfer medium in the first circulation loop.

[0037] Optionally, controlling the third heat transfer medium in the third circulation loop to heat the first heat transfer medium in the first circulation loop includes: Control the connection between the first loop and the second loop.

[0038] Optionally, the thermal management system further includes a second circulation loop and a fourth circulation loop, the second circulation loop further including a third heat exchanger, the third heat exchanger being installed outside the carriage; the thermal management method further includes: When the ninth preset condition is met, the third heat exchanger is shut down, and the second heat transfer medium in the second circulation loop is controlled to exchange heat with the fourth heat transfer medium in the fourth circulation loop in order to heat the fourth heat transfer medium.

[0039] Optionally, the ninth preset condition includes an outside temperature that is lower than the fourth preset temperature.

[0040] Thirdly, a storage medium is provided that stores a program for a vehicle's thermal management system, the control program of which is executed by a controller to implement the thermal management method of the second aspect.

[0041] Fourthly, a computer program product is also provided, the computer program product including a computer program, which, when executed by a controller, implements the thermal management method described in the second aspect.

[0042] Fifthly, a thermal management device is also provided, including a controller, a memory, and a computer program stored in the memory and executable on the controller, the computer program being configured to implement the steps of the thermal management method of the second aspect.

[0043] Sixthly, a vehicle is also provided, the vehicle including the thermal management system of the first aspect, or the storage medium of the third aspect, or the computer program product of the fourth aspect, or the thermal management device of the fifth aspect. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 A schematic diagram of a structural embodiment of the thermal management system provided in this application; Figure 2 for Figure 1 Schematic diagram of the heat exchange plate in the middle; Figure 3 A diagram illustrating the operating environment of the thermal management system provided in this application; Figure 4 A schematic flowchart of an embodiment of the thermal management method provided in this application; Figure 5 A schematic flowchart of another embodiment of the thermal management method provided in this application; Figure 6 The logic diagram for the first loop; Figure 7 A logic diagram for heating the first heat transfer medium in a thermal management system; Figure 8 Logic diagram for heating the second compartment using the thermal management system.

[0046] Figure label: 100-Thermal Management System; 1-First circulation loop, 11-Heat exchange plate, 111-Heat equalization layer, 112-Main body layer, 1121-Flow channel cavity, 1122-Separation wall, 113-Insulation layer, 12-First heat exchanger, 13-First heater, 14-First pumping device, 15-First medium container, 16-First temperature sensor, 17-Second temperature sensor, 18-First control valve, 19-Second control valve, 110-Third control valve; 2-Second circulation loop, 21-Compressor, 22-Second heat exchanger, 23-Third heat exchanger, 24-Fourth control valve, 25-First expansion valve, 26-Second expansion valve; 3-Third loop; 4-Fourth circulation loop, 41-Fourth heat exchanger, 42-Third pumping device, 43-Second medium container, 44-Fifth control valve; 5-Second heater, 6-Fifth heat exchanger, 7-Sixth heat exchanger, 8-Seventh heat exchanger; 200 - Heat source, 300 - Battery. Detailed Implementation

[0047] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0048] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0049] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0050] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, where the range of similarity is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range for approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range for approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0051] This application discloses a vehicle, including electric vehicles (EVs), pure electric vehicles (PEVs / BEVs), hybrid electric vehicles (HEVs), range-extended electric vehicles (REEVs), and plug-in hybrid electric vehicles (PHEVs). Hybrid Electric Vehicle (PHEV), New Energy Vehicle, etc.

[0052] In some implementations, the vehicle includes a frame, a body, and a thermal management system. The frame serves as the vehicle's skeleton, supporting and connecting the various component assemblies. The body, mounted on the frame, forms the passenger compartment for occupants.

[0053] In some embodiments, the vehicle is a passenger car, and the carriage includes a first compartment for passengers and a second compartment for the driver. It should be noted that, unless otherwise specified, the carriage referred to herein can be either the first compartment or the second compartment, or an integrated structure of the first and second compartments, and this application does not impose any limitations on this.

[0054] The thermal management system is used to exchange heat with the carriage to regulate the temperature of the carriage and improve the comfort of the occupants.

[0055] In related technologies, to achieve heating of the vehicle compartment, the thermal management system usually relies on installing a heat exchanger inside the compartment, and then using a blower to blow hot air from the heat exchanger into the compartment to heat the interior of the vehicle compartment.

[0056] However, due to the low density of hot air and its tendency to rise naturally, coupled with the fact that the air outlets of the heat exchangers are mostly located at the height of the passengers' heads, the heat is mainly concentrated in the upper part of the cabin, while the foot and seat areas heat up slowly and even remain at a low temperature after the system has been running for a long time, resulting in obvious vertical temperature stratification, which seriously affects the thermal comfort of the passengers and the overall user experience.

[0057] To solve the above problems, in this application, the thermal management system 100 includes: a first circulation loop 1, the first circulation loop 1 is used to circulate a first heat transfer medium, the first circulation loop 1 includes a heat exchange plate 11, the heat exchange plate 11 is used to be installed in the carriage; the heat exchange plate 11 is provided with a flow channel, the flow channel is used to allow the first heat transfer medium to pass through, so as to exchange heat with the carriage.

[0058] This application integrates the heat exchange plate 11 into the vehicle floor structure. When the heat exchange plate 11 exchanges heat with the vehicle for heating, the first heat transfer medium can flow through the flow channel of the heat exchange plate 11. The heat of the first heat transfer medium is evenly released from bottom to top to the foot area of ​​the occupants by thermal radiation, thereby effectively alleviating the "hot head and cold feet" phenomenon caused by heat exchange at the top of the air conditioner in traditional vehicles, improving the uniformity of temperature distribution in the vertical direction in the vehicle compartment, and improving the thermal comfort of the occupants.

[0059] The thermal management system 100 provided in this application will now be described in detail with reference to the accompanying drawings.

[0060] The thermal management system 100 includes a first circulation loop 1, in which a first heat transfer medium flows. The first heat transfer medium can be water, an aqueous solution of ethylene glycol, an aqueous solution of propylene glycol, or other heat transfer medium with suitable specific heat capacity. This application does not limit the type of heat transfer medium.

[0061] The first circulation loop 1 includes a heat exchange plate 11, which is located inside the passenger compartment. The heat exchange plate 11 has a flow channel. The first circulation loop 1 can control the first heat transfer medium to pass through the flow channel to exchange heat with the passenger compartment, so that the heat is evenly released from bottom to top to the foot area of ​​the passengers in the form of thermal radiation. This effectively alleviates the "hot head and cold feet" phenomenon caused by the heat exchange at the top of the air conditioner in traditional vehicles, improves the uniformity of temperature distribution in the vertical direction inside the passenger compartment, and improves the thermal comfort of the passengers.

[0062] Understandably, in other possible implementations, the heat exchange plate 11 can also be used for heat exchange and cooling of the carriage to reduce the carriage temperature, and this application does not limit this.

[0063] Please refer to Figure 2 In some embodiments, the heat exchange plate 11 includes a heat equalization layer 111, a main body layer 112 and an insulation layer 113 stacked in sequence. The flow channel is provided in the main body layer 112, which is used to allow the first heat transfer medium to circulate and exchange heat with the carriage.

[0064] A heat spreader layer 111 is disposed on the side of the main body layer 112 facing the passenger compartment. The heat spreader layer 111 is used to rapidly diffuse the heat generated by the main body layer 112 in the horizontal direction, so that the heat of the main body layer 112 can be evenly distributed on the surface of the heat exchange plate 11, avoiding local overheating or overcooling, and improving the thermal comfort of the passengers' feet. The material of the heat spreader layer 111 can be a thermally conductive metal, such as aluminum, copper, stainless steel, etc., or a high thermal conductivity composite material, such as graphene thermal conductive film, carbon fiber reinforced polymer, or metal honeycomb core material or porous metal foam, or other materials with good thermal conductivity. This application does not limit this.

[0065] The insulation layer 113 is located on the side of the main layer 112 facing away from the carriage. The insulation layer 113 is used to block heat loss to the outside and reduce the energy loss of the thermal management system 100. The material of the insulation layer 113 can be a closed-cell foam material, such as polyethylene foam, polyurethane foam or EPDM rubber foam; it can also be a vacuum insulation board, aerogel felt or fiberglass wool; or it can be a multi-layer reflective heat insulation film. This application does not limit this.

[0066] Understandably, in other possible implementations, the heat exchange plate may consist of only the main body layer, or may consist of the main body layer and one of the insulation layer and the heat spreader layer, and this application does not limit this.

[0067] In some embodiments, the main body layer 112 forms a flow channel cavity 1121, and the main body layer 112 has a plurality of partition walls 1122 protruding toward the flow channel cavity 1121 on the side facing the insulation layer. The plurality of partition walls 1122 divide the flow channel cavity 1121 to form a flow channel. With this configuration, the partition walls 1122 can be integrally formed with the main body layer 112, eliminating the need for additional welding or assembly of internal pipes, which can effectively reduce production costs.

[0068] On the other hand, the partition wall 1122 allows the main body layer 112 to naturally enclose several closed or semi-closed cavities on the side facing the insulation layer. The air trapped in these cavities has a low thermal conductivity, which can effectively improve the heat insulation effect at the bottom of the heat exchange plate 11 and reduce the energy loss of the thermal management system 100.

[0069] Please refer to Figure 1 In some embodiments, the first circulation loop 1 further includes a first heat exchanger 12, which is installed at the bottom of the carriage to exchange heat with the air at the bottom of the carriage. In practical applications, since the heat exchange efficiency of the first heat exchanger 12 is much greater than that of the heat exchange plate 11, when the temperature inside the carriage is low, the thermal management system 100 can first turn on the first heat exchanger 12 and control all or most of the first heat transfer medium to flow through the first heat exchanger 12. At the same time, the blower device inside the first heat exchanger 12 is activated, so that the air inside the carriage flows quickly over the surface of the heat exchanger, thereby raising the air temperature in the area around the passengers' feet in a short time and achieving rapid heating. After the temperature inside the carriage rises to near the set comfort range, the thermal management system 100 can switch to a radiant heating mode dominated by the heat exchange plate 11, controlling all or most of the first heat transfer medium to flow through the flow channel of the heat exchange plate 11, thereby providing bottom-up heating for the carriage, ensuring uniform temperature distribution in the vertical direction inside the carriage, and improving the thermal comfort of the passengers.

[0070] In some embodiments, the first circulation loop 1 further includes a first heater 13, which may be a positive temperature coefficient (PTC) electric heater, an electric heating wire heater, an electromagnetic induction heater, an infrared radiation heater, or other electric heating devices capable of directly or indirectly heating the liquid heat transfer medium. This application does not limit this.

[0071] The first heater 13 is used to heat the first heat transfer medium. In actual operation, the first heater 13 can independently heat the first heat transfer medium to provide heat for the heat exchange plate 11 or the first heat exchanger 12; it can also assist other heating systems in heating the first heat transfer medium when the heating capacity of other heating systems is limited, so as to maintain the required heating temperature in the carriage and ensure the thermal comfort of the passengers and the reliability of system operation.

[0072] The specific control method for the first heater 13 will be described later.

[0073] Understandably, to drive the first heat transfer medium to flow along a preset path within the first circulation loop 1, the first circulation loop 1 may further include a first pumping device 14, a first medium container 15, and one or more control valves. The first pumping device 14 is used to drive the first heat transfer medium to circulate within the first circulation loop 1. The first pumping device 14 can be a vane pump, a plunger pump, or a gear pump; this application does not impose any limitations on this. The first medium container 15 is used to contain the first heat transfer medium, compensate for volume expansion caused by temperature changes, and maintain stable system pressure. The control valves are used to adjust or switch the flow path of the first heat transfer medium to control its flow along a preset path.

[0074] Exemplarily, the control valves include a first control valve 18 and a second control valve 19. The first control valve 18 is connected to the pipeline between the first pumping device 14 and the heat exchange plate 11, and is used to control the flow rate to the heat exchange plate 11; the second control valve 19 is connected to the pipeline between the first pumping device 14 and the first heat exchanger 12, and is used to control the flow rate to the first heat exchanger 12. In practical applications, when the temperature inside the carriage is low and rapid heating is required, the thermal management system 100 can close the first control valve 18 and open the second control valve 19, allowing all the first heat transfer medium to flow through the first heat exchanger 12, thereby rapidly heating the air in the passenger foot area through forced convection, thus achieving rapid heating of the carriage. When the temperature inside the carriage approaches or reaches the comfort range, the thermal management system 100 can close the second control valve 19 and open the first control valve 18, allowing all the first heat transfer medium to flow through the heat exchange plate 11, thereby improving the vertical uniformity of heating provided by the thermal management system 100.

[0075] Understandably, in other possible implementations, other control loops may also be used to control the flow direction of the first heat transfer medium, and this application does not impose any restrictions on this.

[0076] In some other embodiments, the first circulation loop 1 may also include one or more temperature sensors for real-time monitoring of the temperature of the heat transfer medium at key locations in the loop, providing a reference for the control of the thermal management system 100.

[0077] For example, the temperature sensor includes a first temperature sensor 16 and a second temperature sensor 17. The first temperature sensor 16 is disposed on the pipeline between the first pumping device 14 and the heat exchange plate 11, and is used to detect the temperature of the medium before it enters the heat exchange plate 11, so as to determine whether the heating capacity meets the comfort requirements. The second temperature sensor 17 is disposed on the pipeline between the heat exchange plate 11 and the first medium container 15, and is used to detect the temperature of the medium at the outlet of the heat exchange plate 11, so as to evaluate the actual heat exchange effect of the heat exchange plate 11.

[0078] In some embodiments, the thermal management system 100 further includes a second circulation loop 2 for circulating a second heat transfer medium. The second heat transfer medium may be the same as or a different medium from the first heat transfer medium. For example, the first heat transfer medium is water, and the second heat transfer medium includes one of 407C, R410a, and CO2.

[0079] The second circulation loop 2 is heat-exchange connected to the first circulation loop 1 so that the second heat transfer medium exchanges heat with the first heat transfer medium. Thus, when the heat exchange plate 11 heats the carriage, it heats the first heat transfer medium, thereby increasing the temperature of the first heat transfer medium. Or, when the heat exchange plate 11 cools the carriage, it cools the first heat transfer medium, thereby decreasing the temperature of the first heat transfer medium.

[0080] The second circulation loop 2 and the first circulation loop 1 can be connected by a heat exchanger, or the heat exchange can be achieved by intertwining and bonding the pipes of the first circulation loop 1 and the pipes of the second circulation loop 2 together. This application does not limit this.

[0081] For example, the thermal management system 100 further includes a fifth heat exchanger 6, which may be a plate heat exchanger, a shell-and-tube heat exchanger, or other heat exchangers, and this application does not limit this. The first circulation loop 1 and the second circulation loop 2 are connected to the fifth heat exchanger 6, thereby realizing heat exchange between the first circulation loop 1 and the second circulation loop 2.

[0082] For ease of explanation, the fifth heat exchanger 6 will be used as the heat exchange device for the first circulation loop 1 and the second circulation loop 2 in the following description.

[0083] The second circulation loop 2 includes a compressor 21, a second heat exchanger 22, and a third heat exchanger 23 connected to each other; the second heat exchanger 22 is installed in the carriage, and the third heat exchanger 23 is installed outside the carriage; the compressor 21 is configured to drive the second heat transfer medium through the second heat exchanger 22 to exchange heat with the air in the carriage, and drive the second heat transfer medium through the third heat exchanger 23 to exchange heat with the air outside the carriage.

[0084] Understandably, in some embodiments, an expansion valve should also be provided in the second circulation loop 2. The expansion valve is connected between the fifth heat exchanger 6 and the third heat exchanger 23. In practical applications, when the heat exchange plate 11 is in heating mode, the compressor 21 compresses the low-temperature and low-pressure second heat transfer medium into a high-temperature and high-pressure state. At this time, the second heat transfer medium flows through the fifth heat exchanger 6, transferring heat to the first heat transfer medium, causing the temperature of the first heat transfer medium to rise and circulate to the heat exchange plate 11 to heat the carriage. Subsequently, the second heat transfer medium is depressurized by the expansion valve and flows through the third heat exchanger 23, absorbing heat from the air outside the carriage and evaporating. It is then drawn into the compressor 21 into the next cycle, thereby transferring the heat from the outside environment to the inside of the carriage.

[0085] When the heat exchange plate 11 is in cooling mode, the compressor 21 compresses the low-temperature, low-pressure second heat transfer medium into a high-temperature, high-pressure state and drives it to flow through the third heat exchanger 23. At this time, the second heat transfer medium condenses and releases heat in the third heat exchanger 23, releasing the heat to the air outside the vehicle. Subsequently, the second heat transfer medium is depressurized by the expansion valve and flows through the fifth heat exchanger 6, absorbing the heat of the first heat transfer medium and evaporating, thereby lowering the temperature of the first heat transfer medium and circulating it to the heat exchange plate 11 to cool the vehicle. It is then drawn into the compressor 21 to enter the next cycle, thereby transferring the heat inside the vehicle to the outside environment.

[0086] Understandably, in other possible implementations, the second heat transfer medium compressed by the compressor 21 may also partially flow through the fifth heat exchanger 6 to exchange heat with the first heat transfer medium, and partially flow through the second heat exchanger 22 to directly dissipate heat to the air in the carriage.

[0087] Compared to the second heat transfer medium, which is driven under high temperature and high pressure, to heat the carriage through the second heat exchanger 22 and the auxiliary heat exchange plate 11, this application prevents the second heat transfer medium from flowing through the second heat exchanger 22. This avoids the problem that the hot air supplied by the second heat exchanger 22 tends to rise to the top of the carriage, improves the uniformity of the vertical temperature distribution in the carriage, and enhances the thermal comfort of the passengers.

[0088] On the other hand, the second heat exchanger 22 is usually located at the top of the carriage. Since the second heat transfer medium heated by the compressor 21 does not flow through the second heat exchanger 22, the first circulation loop 1 may also include a first expansion valve 25 in the loop control. The first expansion valve 25 is located between the compressor 21 and the second heat exchanger 22. The compressor 21 can first compress the low-temperature, low-pressure second heat transfer medium to a high-temperature, high-pressure state. Then, part of the second heat transfer medium can exchange heat with the first heat transfer medium through the fifth heat exchanger 6, and part of the second heat transfer medium can flow into the second heat exchanger 22 after being depressurized through the first expansion valve 25. At this time, the second heat exchanger 22 operates as an evaporator. The low-temperature second heat transfer medium absorbs the excess heat accumulated at the top of the carriage in the second heat exchanger 22, thereby balancing the vertical temperature distribution of the upper and lower parts of the carriage and improving the comfort of the carriage.

[0089] To achieve heat exchange control of the first circulation loop 1 and the second circulation loop 2, in some embodiments, the first circulation loop 1 further includes a third control valve 110, the first valve port of the third control valve 110 is connected to the first pumping device 14, the second valve port of the third control valve 110 is connected to the fifth heat exchanger 6, and the third valve port of the third control valve 110 is connected to the heat exchange plate 11; correspondingly, the second circulation loop 2 further includes a fourth control valve 24, the first valve port of the fourth control valve 24 is connected to the compressor 21, the second valve port of the fourth control valve 24 is connected to the fifth heat exchanger 6, and the third valve port of the fourth control valve 24 is connected to the third heat exchanger 23.

[0090] In practical applications, the thermal management system 100 can connect the first and second valve ports of the third control valve 110 and the fourth control valve 24, thereby allowing the first and second heat transfer media to exchange heat through the fifth heat exchanger 6. Simultaneously, the thermal management system 100 can also connect the first and third valve ports of the third control valve 110 and the fourth control valve 24, thereby stopping the heat exchange between the first and second heat transfer media.

[0091] The specific control method for the second loop 2 will be discussed later.

[0092] In some embodiments, the thermal management system 100 further includes a third circulation loop 3 for circulating a third heat transfer medium. The third heat transfer medium may be the same as or different from the first or second heat transfer medium. For example, the third heat transfer medium may include one of 407C, R410a, or CO2.

[0093] The third circulation loop 3 is used to connect with the heat source 200 for heat exchange, so that the third heat transfer medium can exchange heat with the heat source 200; the third circulation loop 3 is also connected with the first circulation loop 1 for heat exchange, so that the third heat transfer medium can exchange heat with the first heat transfer medium. In this way, while cooling the vehicle heat source 200, the waste heat of the heat source 200 is used to heat the first heat transfer medium, thereby realizing the recovery of waste heat from the vehicle heat source 200 and reducing vehicle energy consumption.

[0094] The heat source 200 can be an engine, a reducer, an engine controller, or any other heat-generating device; this application does not limit this.

[0095] The third circulation loop 3 and the first circulation loop 1 can be connected by a heat exchanger, or the heat exchange can be achieved by intertwining and bonding the pipes of the third circulation loop 3 and the pipes of the first circulation loop 1. This application does not limit this.

[0096] In some embodiments, the third circulation loop 3 can also be connected to the second circulation loop 2 for heat exchange, so that the third heat transfer medium can exchange heat with the second heat transfer medium, thereby using the waste heat of the heat source 200 to heat the second heat transfer medium, thereby realizing the recovery of waste heat from the vehicle heat source 200 and reducing vehicle energy consumption.

[0097] The third circulation loop 3 and the second circulation loop 2 can be connected by a heat exchanger, or the heat exchange can be achieved by intertwining and bonding the pipes of the third circulation loop 3 and the pipes of the second circulation loop 2. This application does not limit this.

[0098] For example, the thermal management system 100 also includes a sixth heat exchanger 7, which may be a plate heat exchanger, a shell-and-tube heat exchanger, or other heat exchangers, and this application does not limit this. The third circulation loop 3 and the second circulation loop 2 are connected to the sixth heat exchanger 7, thereby realizing heat exchange between the third circulation loop 3 and the second circulation loop 2.

[0099] Understandably, in some embodiments, the third circulation loop 3 may also include a second pumping device for driving the third heat transfer medium to circulate within the third circulation loop 3. The second pumping device may be a vane pump, a plunger pump, or a gear pump, and this application does not limit it in this regard.

[0100] The specific control method for the third loop 3 will be discussed later.

[0101] In some embodiments, the thermal management system 100 further includes a fourth circulation loop 4 for circulating a fourth heat transfer medium, and the fourth circulation loop 4 is heat-exchange connected to the battery 300 so that the fourth heat transfer medium exchanges heat with the battery 300.

[0102] The fourth heat transfer medium may be the same as, or different from, the first, second, and third heat transfer media. For example, the fourth heat transfer medium may include water.

[0103] The fourth circulation loop 4 is also connected to the first circulation loop 1 for heat exchange, so that the fourth heat transfer medium exchanges heat with the first heat transfer medium. In this way, while cooling the battery 300, the waste heat recovered from the battery 300 is used to heat the first heat transfer medium, thereby realizing the recovery of waste heat from the battery 300 and reducing vehicle energy consumption.

[0104] The third circulation loop 3 and the second circulation loop 2 can be connected by a heat exchanger, or the heat exchange can be achieved by intertwining and bonding the pipes of the third circulation loop 3 and the pipes of the second circulation loop 2. This application does not limit this.

[0105] In some embodiments, the fourth circulation loop 4 is also heat-exchange connected to the second circulation loop 2 so that the fourth heat transfer medium exchanges heat with the second heat transfer medium. In this way, the fourth circulation loop 4 can be heated or cooled through the second circulation loop 2, thereby achieving heating or cooling of the battery 300 and improving the stability of the battery 300 operation.

[0106] The fourth circulation loop 4 and the second circulation loop 2 can be connected by a heat exchanger, or the heat exchange can be achieved by intertwining and bonding the pipes of the fourth circulation loop 4 and the pipes of the second circulation loop 2. This application does not limit this.

[0107] For example, the thermal management system 100 also includes a seventh heat exchanger 8, which may be a plate heat exchanger, a shell-and-tube heat exchanger, or other heat exchangers, and this application does not limit this. The fourth circulation loop 4 and the second circulation loop 2 are connected to the seventh heat exchanger 8, thereby realizing heat exchange between the fourth circulation loop 4 and the second circulation loop 2.

[0108] In some embodiments, the heat exchange plate 11 is located in the first compartment, and the fourth circulation loop 4 includes a fourth heat exchanger 41, which is located in the second compartment for heat exchange with the second compartment. This arrangement allows for independent temperature control of the passenger compartment and the driver's cab, meeting the differentiated comfort needs of passengers in different areas through the zoned operation of the heat exchange plate 11 and the fourth heat exchanger 41. Furthermore, the driver's cab cooling and the battery 300 cooling can share the fourth circulation loop 4 and the fourth heat transfer medium, eliminating the need for a separate cooling loop for the driver's cab. This saves space in the piping layout, the number of control valves and pumping devices, reduces system complexity and manufacturing costs, and improves the integration and economy of the vehicle thermal management system 100.

[0109] In some embodiments, the thermal management system 100 further includes a second heater 5, which may be a positive temperature coefficient (PTC) electric heater, an electric heating wire heater, an electromagnetic induction heater, an infrared radiation heater, or other electric heating devices capable of directly or indirectly heating the liquid heat transfer medium. This application does not limit the scope of the invention.

[0110] The second heater 5 is used to heat the second compartment. When heating in the second circulation loop 2 is limited, such as when the ambient temperature is lower than the effective operating range of the compressor 21 or when the heat from the thermal management system 100 needs to be prioritized for the crew compartment, the second compartment uses the second heater 5 for auxiliary or independent heating. This ensures that the heating needs of the second compartment are met, avoids thermal management coupling conflicts between the first and second compartments, and improves the operational reliability and temperature control flexibility of the thermal management system 100.

[0111] Understandably, to drive the fourth heat transfer medium to flow along a preset path within the fourth circulation loop 4, the fourth circulation loop 4 may further include a third pumping device 42, a second medium container 43, and one or more control valves. The third pumping device 42 is used to drive the fourth heat transfer medium to circulate within the fourth circulation loop 4. The third pumping device 42 can be a vane pump, a plunger pump, or a gear pump; this application does not limit this. The second medium container 43 is used to contain the fourth heat transfer medium, compensate for volume expansion caused by temperature changes, and maintain stable system pressure. The control valves are used to adjust or switch the flow path of the fourth heat transfer medium to control its flow along a preset path.

[0112] In some embodiments, the second circulation loop 2 further includes a second expansion valve 26, which is located between the seventh heat exchanger 8 and the compressor 21. The fourth circulation loop 4 includes a fifth control valve 44, which is located between the third pumping device 42 and the fourth heat exchanger 41. In specific applications, the thermal management system 100 can control the second expansion valve 26 and the fifth control valve 44 to open, allowing the fourth heat transfer medium and the second heat transfer medium to exchange heat through the fifth heat exchanger 6. The thermal management system 100 can also control the second expansion valve and the fifth control valve 44 to close, thereby stopping the heat exchange between the fourth heat transfer medium and the second heat transfer medium.

[0113] The specific control method for the fourth loop 4 will be discussed later.

[0114] Please refer to Figure 3The vehicle also includes a controller 1001, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 is mainly used for user data interaction and may include a display screen, an input unit such as a keyboard, and optionally, a standard wired or wireless interface. The network interface 1004 is mainly used for data communication with a network server and may optionally include a standard wired or wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface).

[0115] The controller 1001 is used to call computer instructions to execute the thermal management method. The controller 1001 can be a central processing unit (CPU), or it can be other general-purpose controllers, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0116] Memory 1005 is used to store computer instructions, and it is also used to store the operating system, network communication module, user interface module, and thermal management control program, etc. Memory 1005 can be volatile memory or non-volatile memory, or it can include both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

[0117] It should be noted that when the controller 1001 is a general-purpose controller, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the controller.

[0118] It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

[0119] In addition to the data bus, this bus may also include a power bus, a control bus, and a status signal bus. However, for clarity, all buses are labeled "bus" in the diagram.

[0120] In some embodiments, the vehicle further includes a storage medium and a computer program product. The storage medium stores a computer control program that is retrieved by the controller to implement the steps of the thermal management method. The storage medium stores a vehicle steering control program that is executed by the controller to implement the thermal management method. The computer program product includes a computer program that, when executed by the controller, implements the thermal management method.

[0121] Please refer to Figure 4 , Figure 4 The thermal management method provided in this application includes: S101, when a first preset condition is met, controlling the first heat transfer medium in the first circulation loop to flow through the flow channel of the heat exchange plate to exchange heat with the passenger compartment. Specifically, when the controller identifies that the vehicle meets the first preset condition, the controller will open the first control valve and the first pumping device, thereby driving the first heat transfer medium to flow into the heat exchange plate through the flow channel of the heat exchange plate, so that the heat of the first heat transfer medium can be evenly released from bottom to top to the foot area of ​​the occupants by thermal radiation, thereby effectively alleviating the "hot head and cold feet" phenomenon caused by the top heat exchange of traditional vehicle air conditioning, improving the uniformity of vertical temperature distribution in the passenger compartment, and improving the thermal comfort of the occupants.

[0122] Understandably, in other possible implementations, the flow of the first heat transfer medium toward the heat exchange plate can also be controlled by other loop control methods, and this application does not limit this.

[0123] There are several ways for the controller to determine whether a vehicle meets the first preset condition. In some implementations, the controller can determine whether the vehicle meets the first preset condition by judging the outside temperature. When the outside temperature is lower than the first preset temperature, the controller determines that the first preset condition is met, and then controls the flow of the first heat transfer medium in the first circulation loop through the flow channel of the heat exchange plate, thereby raising the temperature inside the vehicle.

[0124] The first preset temperature can be set according to the capacity limit of the vehicle thermal management system or by the occupants according to their own comfort needs, and this application does not impose any restrictions on this. For example, the first preset temperature T1=17°. When the outside temperature Tout≤17°, the controller opens the first control valve and the first pumping device, thereby driving the first heat transfer medium to flow into the heat exchange plate through the flow channel of the heat exchange plate, so as to exchange heat with the passenger compartment through the heat exchange plate.

[0125] In other possible implementations, the first preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0126] Please refer toFigure 5 and Figure 6 In some embodiments, the thermal management method further includes: S202, when the second preset condition is met, controlling the first heat transfer medium in the first circulation loop to flow through the first heat exchanger to exchange heat with the carriage.

[0127] In this embodiment, when the controller determines that the vehicle meets the second preset condition, the controller will open the second control valve and control the first pumping device to drive the first heat transfer medium to flow through the first heat exchanger, so that it releases heat into the compartment through forced convection, thereby rapidly increasing the compartment temperature.

[0128] There are multiple ways for the controller to determine whether the vehicle meets the second preset condition. In some implementations, the controller can determine whether the vehicle meets the second preset condition by judging the temperature inside the vehicle. When the temperature inside the vehicle is lower than the second preset temperature, the controller determines that the second preset condition is met, thereby controlling the first heat transfer medium in the first circulation loop to flow through the first heat exchanger, thereby achieving rapid heating of the vehicle compartment.

[0129] The second preset temperature can be set according to the capacity limit of the vehicle's thermal management system or by the occupants according to their own comfort needs; this application does not impose any restrictions on this.

[0130] During the above process, the controller can simultaneously open the first control valve, allowing the first heat transfer medium to flow into the heat exchange plate at the same time, thereby realizing the coordinated work of the first heat exchanger and the heat exchange plate. Alternatively, the controller can temporarily close the first control valve, driving all the first heat transfer medium to flow to the first heat exchanger, thereby achieving rapid heating of the carriage. This application does not impose any restrictions on this.

[0131] In some implementations, the first preset condition includes: the interior temperature is lower than the second preset temperature, and the second preset condition includes: the interior temperature is higher than the third preset temperature; the third preset temperature is lower than the second preset temperature. The third preset temperature can be set by the occupants according to their own comfort needs based on the capacity limit of the vehicle thermal management system. This application does not limit this.

[0132] For example, the second preset temperature T2 = 0°C and the third preset temperature T3 = -5°C. When the interior temperature Tcar satisfies: Tcar < -5°C, the controller controls the first control valve to close and the second control valve to open, so that the first heat transfer medium flows through the first heat exchanger, achieving rapid heating of the compartment. When the interior temperature Tcar satisfies: -5°C ≤ Tcar < 0°C, the controller controls the first control valve and the second control valve to open simultaneously, so that the first heat transfer medium flows through the first heat exchanger and the heat exchange plate simultaneously. Through the combination of forced convection at the top of the first heat exchanger and radiation at the bottom of the heat exchange plate, the uniformity of vertical temperature distribution is improved while maintaining rapid heating. When Tcar ≥ 0°C, the controller closes the second control valve and keeps only the first control valve open, switching to the heat exchange plate to operate alone, thereby using the heat exchange plate to improve the uniformity of vertical temperature distribution in the compartment and enhance the thermal comfort of the occupants.

[0133] In other possible implementations, the second preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0134] In summary, regarding vehicle heating, the controller continuously monitors whether the outside temperature is lower than a first preset temperature. When the outside temperature is lower than the first preset temperature, the controller checks whether the inside temperature is lower than a second preset temperature. If the inside temperature is lower than the second preset temperature, the controller directs the first heat transfer medium to flow through the first heat exchanger to accelerate vehicle heating via bottom convection. If the inside temperature is higher than the second preset temperature, the controller directs the first heat transfer medium to flow through the heat exchange plate to heat the vehicle. When the inside temperature is higher than the second preset temperature but lower than the third preset temperature, the controller directs a portion of the first heat transfer medium to flow through the first heat exchanger and a portion to flow through the heat exchange plate. Furthermore, when the inside temperature rises above the second preset temperature, the controller directs all of the first heat transfer medium to flow through the heat exchange plate.

[0135] It should be noted that when the first heat transfer medium flows through both the heat exchange plate and the first heat exchanger, it can be that 50% of the first heat transfer medium flows through the heat exchange plate and 50% flows through the first heat exchanger, or it can be that 70% of the first heat transfer medium flows through the heat exchange plate and 30% flows through the first heat exchanger. The specific distribution method of the first heat transfer medium can be set according to the thermal management capability of the thermal management system itself or according to the needs of the occupants, and this application does not impose any restrictions on it.

[0136] Please refer to Figure 5 and Figure 7In some embodiments, the thermal management method further includes: S203, when a third preset condition is met, controlling the second heat transfer medium in the second circulation loop to exchange heat with the first heat transfer medium in the first circulation loop, so as to heat the first heat transfer medium and thereby maintain the stability and continuity of the heat supply of the heat exchange plate.

[0137] Specifically, when the controller determines that the vehicle meets the third preset condition, the controller controls the first valve port of the third control valve to connect with the third valve port, controls the first valve port of the fourth control valve to connect with the third valve port, and at the same time starts the compressor, so that the high temperature and high pressure second heat transfer medium flows through the fifth heat exchanger, thereby realizing the heating of the first heat transfer medium.

[0138] There are several ways for the controller to determine whether a vehicle meets the third preset condition. In some implementations, the controller can determine whether the vehicle meets the third preset condition by judging the outside temperature. When the outside temperature is lower than the first preset temperature but higher than the fourth preset temperature, the controller controls the second circulation loop to heat the first heat transfer medium in the first circulation loop.

[0139] The fourth preset temperature can be set according to the capabilities of the vehicle thermal management system. For example, the fourth preset temperature T4 = -15°. When the outside temperature Tout satisfies -15° ≤ Tout < 17°, the controller determines that the second circulation loop has effective heating capability. Therefore, it allows the heat exchange between the second circulation loop and the first circulation loop to heat the first heat transfer medium and maintain the continuous heating of the heat exchange plate.

[0140] In other possible implementations, the third preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, through voice control, or through a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences. This application does not impose any restrictions on this.

[0141] To improve the reliability of the second circulation loop in heating the first circulation loop, in some embodiments, when the vehicle interior temperature Tcar satisfies the condition Tcar < T7, the controller controls the circulation of the second heat transfer medium to continuously heat the first heat transfer medium. When the vehicle interior temperature Tcar satisfies the condition Tcar > T7 + ΔT1, the controller stops the flow of the second heat transfer medium to avoid overload of the second circulation loop and protect its safety.

[0142] The seventh preset temperature T7 and the first hysteresis temperature ΔT1 can be set according to the capabilities of the vehicle thermal management system. For example, T7 = 50°C and ΔT1 = 2°C. In this way, when the temperature of the first heat transfer medium is detected to be below 50°C, the first circulation loop is started to heat the first heat transfer medium. When the water temperature rises to above 52°C, heating is suspended, forming a closed-loop control with hysteresis. This not only prevents the risk of the cabin overheating or the heat exchange plate surface being scalded due to excessively high water temperature, but also avoids frequent start-stop of the compressor, thus improving system stability and lifespan.

[0143] In some embodiments, the thermal management method includes: S204, when a fourth preset condition is met, controlling the second heat transfer medium in the second circulation loop to exchange heat with the first heat transfer medium in the first circulation loop, and controlling the first heater to heat the first heat transfer medium.

[0144] In this embodiment, when the controller determines that the vehicle meets the fourth preset condition, it will control the second circulation loop to start the compressor and adjust the opening or conduction state of the third and fourth control valves, so that the high-temperature and high-pressure second heat transfer medium flows through the fifth heat exchanger and exchanges heat with the first heat transfer medium in the first circulation loop. At the same time, the controller will also turn on the first heater to provide auxiliary heating for the first heat transfer medium in the first circulation loop. In this way, when the heating capacity of the second circulation loop is limited or insufficient, the surface temperature of the heat exchange plate is maintained continuously and stably, ensuring the uniformity of the vertical temperature distribution in the passenger compartment and the thermal comfort of the occupants, and improving the stability of the thermal management system operation.

[0145] There are multiple ways for the controller to determine whether a vehicle meets the fourth preset condition. In some implementations, the controller can determine whether the vehicle meets the fourth preset condition by judging the outside temperature of the vehicle, where the outside temperature is less than the fifth preset temperature and greater than the fourth preset temperature; wherein the fourth preset temperature is less than the first preset temperature.

[0146] The fifth preset temperature can be set according to the capabilities of the vehicle's thermal management system. For example, the fifth preset temperature T5 = 0°. When the outside temperature Tout satisfies -15° ≤ Tout < 0°, the controller determines that the second circulation loop has effective heating capability, but the heating capability is limited. Therefore, the first heater will be turned on to provide auxiliary heating to the first heat transfer medium in the first circulation loop. In this way, under the condition that the heating capability of the second circulation loop is limited, the surface temperature of the heat exchange plate is maintained to ensure the uniformity of the vertical temperature distribution in the passenger compartment and the thermal comfort of the occupants, thereby improving the stability of the thermal management system operation.

[0147] In other possible implementations, the fourth preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0148] To improve the safety of auxiliary heating by the first heater, in some embodiments, when the outside temperature Tout satisfies: T1 < Tout < T1 + ΔT2, and the inside temperature Tcar satisfies: Tcar < T8 + ΔT3, the second circulation loop and the first heater are controlled to heat the first circulation loop. When the outside temperature Tout satisfies: T1 < Tout < T1 + ΔT2, and the inside temperature Tcar satisfies: Tcar > T8, the first heater is turned off. Here, T8 is the eighth preset temperature, ΔT2 is the second hysteresis temperature, and ΔT3 is the third hysteresis temperature.

[0149] When the outside temperature Tout satisfies: T1+ΔT2<Tout<T5, and the inside temperature Tcar satisfies: Tcar<T8-ΔT3, the second circulation loop and the first heater are controlled to heat the first circulation loop. When the outside temperature Tout satisfies: T1+ΔT2<Tout<T5, and the inside temperature Tcar satisfies: Tcar>T8, the first heater is turned off.

[0150] This implementation introduces hysteresis temperatures ΔT2 and ΔT3 to construct a graded temperature control strategy. On the one hand, it can effectively avoid frequent start-stop of the first heater at the temperature critical point, extending its service life and reducing the complexity of system control. On the other hand, it can intelligently adjust the timing of the coordinated operation of the second circulation loop and the first heater according to the dynamic changes of the external ambient temperature and the actual internal temperature of the vehicle. While ensuring rapid heating of the passenger compartment, it maximizes the energy efficiency of the first circulation loop, reduces the power consumption of the first heater, optimizes the energy distribution of the entire vehicle, and ensures operational safety under extreme conditions.

[0151] In some implementations, when the outside temperature Tout satisfies: T1 < Tout < T1 + ΔT2, and the inside temperature Tcar first reaches T8 < Tcar < T8 + ΔT3, the first heater is controlled to continue heating; when the outside temperature Tout satisfies: T1 + ΔT2 < Tout < T4, and the inside temperature Tcar first reaches T8 - ΔT3 < Tcar < T8, the first heater is stopped to continue heating. This avoids frequent start-stop of the first heater at the temperature critical point, extends its service life, and reduces system energy consumption; at the same time, it ensures that the inside temperature remains stable after reaching the target range, avoids the decrease in passenger comfort caused by temperature fluctuations, and realizes the stable and efficient operation of the thermal management system under complex operating conditions.

[0152] In some embodiments, the thermal management method further includes: S205, when a fifth preset condition is met, controlling the first heater to heat the first heat transfer medium. When the controller determines that the vehicle meets the fifth preset condition, the controller determines that the heating capacity of the second circulation loop is limited, and thus heats the first heat transfer medium through the first heater, thereby saving unnecessary energy loss.

[0153] There are multiple ways for the controller to determine whether the vehicle meets the fifth preset condition. In some implementations, the controller can determine whether the vehicle meets the fifth preset condition by judging the outside temperature. When the outside temperature is less than the fourth preset temperature, the controller determines that the vehicle meets the fifth preset condition, and thus only controls the first heater to heat the first heat transfer medium.

[0154] The fourth preset temperature can be set according to the capabilities of the vehicle thermal management system. For example, the fourth preset temperature T4 = -15°. When the outside temperature Tout meets the condition that the inside temperature Tout < -15°, the controller determines that the ambient temperature is too low and the heating capacity of the second circulation loop is limited. At this time, the use of the second circulation loop will be restricted, and the first circulation loop will be heated by the first heater to maintain the stability of the heat exchange plate heating.

[0155] In other possible implementations, the fifth preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0156] In summary, regarding the heating of the first heat transfer medium, the controller monitors the outside temperature in real time. When the outside temperature is greater than a fourth preset temperature but less than a fifth preset temperature, the controller controls the second circulation loop and the first heater to heat the first heat transfer medium. When the outside temperature is greater than both the fourth and fifth preset temperatures, the controller controls the second circulation loop to heat the first heat transfer medium. When the outside temperature is less than the fourth preset temperature, the controller controls the first heater to heat the first heat transfer medium.

[0157] Please refer to Figure 5 and Figure 8 In some embodiments, the thermal management method further includes: S206, when the sixth preset condition is met, controlling the second circulation loop to exchange heat with the fourth circulation loop to heat the fourth heat transfer medium, and causing the heated fourth heat transfer medium to flow through the second heater to exchange heat with the second compartment.

[0158] S207. When the seventh preset condition is met, control the second heater to exchange heat with the second compartment to heat the second compartment.

[0159] In this embodiment, when the vehicle meets the sixth preset condition, the controller will control the compressor to start and compress the second heat transfer medium, causing it to circulate in the second circulation loop. Simultaneously, the controller will activate the third pumping device in the fourth circulation loop, driving the flow of the fourth heat transfer medium. The high-temperature, high-pressure second heat transfer medium flows through the seventh heat exchanger, exchanging heat with the fourth heat transfer medium, thereby heating it. The heated fourth heat transfer medium first flows through the battery cold plate to heat the battery, and then continues to flow through the second heater arranged in the second compartment, thus simultaneously achieving coordinated heating of the power battery and the second compartment, improving the overall vehicle energy utilization efficiency.

[0160] When the vehicle meets the seventh preset condition, the controller stops the heat exchange between the second and fourth circulation loops and shuts down the third pumping device, activating only the second heater to directly heat the second compartment. This is to avoid overheating the battery due to excessively high temperatures of the fourth heat transfer medium caused by continuous heat exchange, which could affect battery stability.

[0161] There are several ways for the controller to determine whether the vehicle meets the sixth and seventh preset conditions. In some implementations, the controller can determine whether the vehicle meets the sixth and seventh preset conditions by judging the outside temperature. When the outside temperature is lower than the fourth preset temperature, the controller determines that the vehicle meets the sixth preset condition, and thus only controls the second circulation loop and the second heater to heat the second compartment simultaneously. When the outside temperature is higher than the fourth preset temperature, the controller determines that the vehicle meets the seventh preset condition, and thus stops heating the fourth heat transfer medium to protect battery safety.

[0162] The fourth preset temperature can be set according to the capabilities of the vehicle's thermal management system. For example, the fourth preset temperature T4 = -15°C. When the outside temperature Tout is less than -15°C, the controller determines that the ambient temperature is too low and heats the fourth circulation loop through the second circulation loop. This ensures sufficient heating for the second compartment while also heating the battery, improving the battery's stability in low-temperature environments. When the outside temperature Tout is greater than -15°C, the controller stops heating the fourth circulation medium to prevent overheating of the battery and improve battery safety.

[0163] In some embodiments, the thermal management method further includes controlling a third heat transfer medium in a third circulation loop to heat a first heat transfer medium in a first circulation loop. This utilizes waste heat from the vehicle to heat the first circulation loop, reducing heating energy consumption in the first circulation loop and improving overall vehicle energy efficiency and range.

[0164] There are several ways to exchange heat between the third circulation loop and the first circulation loop. In some embodiments, a plate heat exchanger can be installed between the third circulation loop and the first circulation loop; when waste heat recovery is required, the controller starts the first pumping device and the third pumping device, so that the first heat transfer medium and the third heat transfer medium flow through the plate heat exchanger respectively, thereby realizing heat exchange.

[0165] In other possible implementations, a sixth control valve can be provided between the first and third circulation loops. When heat exchange is required between the first and third circulation loops, the sixth control valve is opened, connecting the first and third circulation loops to achieve heat exchange. Compared to other methods, this implementation has higher heat exchange efficiency and less heat loss, effectively improving the heat exchange efficiency of the thermal management system.

[0166] In some implementations, the thermal management method further includes controlling heat exchange between a third heat transfer medium in the third circulation loop and a second heat transfer medium in the second circulation loop to heat the second heat transfer medium. This utilizes waste heat from the vehicle to heat the second circulation loop, reducing its heating energy consumption and improving overall vehicle energy efficiency and range. Simultaneously, waste heat from the heat source can be used to defrost the second circulation loop, further reducing its energy consumption.

[0167] In some implementations, the thermal management method further includes: S208, when the eighth preset condition is met, controlling the second heat exchanger to dissipate heat from the carriage.

[0168] In this embodiment, the controller controls the compressor to compress the low-temperature, low-pressure second heat transfer medium into a high-temperature, high-pressure state. Then, the first expansion valve is opened, allowing a portion of the second heat transfer medium to exchange heat with the first heat transfer medium via the fifth heat exchanger, while another portion flows into the second heat exchanger after being depressurized by the first expansion valve. At this time, the second heat exchanger operates as an evaporator, where the low-temperature second heat transfer medium absorbs excess heat accumulated at the top of the carriage, thereby balancing the vertical temperature distribution between the upper and lower parts of the carriage and improving passenger comfort.

[0169] There are several ways for the controller to determine whether a vehicle meets the eighth preset condition. In some implementations, the controller can determine whether the vehicle meets the eighth preset condition by judging the temperature difference between the heat exchange plate and the heat exchanger. The eighth preset condition includes: the temperature difference between the second heat exchanger and the average temperature at the heat exchange plate is greater than the sixth preset temperature. In this way, when there is obvious vertical temperature stratification between the top and bottom of the carriage, the second heat exchanger is activated in time as an evaporator to absorb the excess heat accumulated at the top, thereby balancing the temperature distribution in the upper and lower parts of the carriage, avoiding the discomfort of the passengers' heads being too hot and their feet being too cold, and improving the uniformity of the temperature field in the carriage and the thermal comfort of the passengers.

[0170] The sixth preset temperature can be set according to the capacity limit of the vehicle's thermal management system or by the occupants according to their own comfort needs; this application does not impose any restrictions on this. For example, the sixth preset temperature T6 = 5°C. When the temperature difference between the second heat exchanger and the average temperature at the heat exchange plate is greater than 5°C, the controller will open the first expansion valve and drive the second heat transfer medium to flow into the second heat exchanger after depressurization through the first expansion valve, thereby reducing the temperature of the top of the passenger compartment.

[0171] In other possible implementations, the eighth preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0172] The thermal management method further includes: when the ninth preset condition is met, shutting down the third heat exchanger and controlling the second heat transfer medium in the second circulation loop to exchange heat with the fourth heat transfer medium in the fourth circulation loop, thereby heating the fourth heat transfer medium. In this embodiment, when the controller determines that the vehicle meets the ninth preset condition, it will determine that the heat exchange capacity of the third heat exchanger is limited. At this time, the controller shuts down the third heat exchanger and controls the second heat transfer medium in the second circulation loop to exchange heat with the fourth heat transfer medium in the fourth circulation loop, thereby heating the fourth heat transfer medium. In this way, unnecessary energy waste is reduced while the heating efficiency of the battery is improved.

[0173] There are multiple ways for the controller to determine whether the vehicle meets the ninth preset condition. In some implementations, the controller can determine whether the vehicle meets the ninth preset condition by judging the outside temperature. The ninth preset condition includes that the outside temperature is less than the fourth preset temperature. When the outside temperature is less than the fourth preset temperature, the controller shuts down the third heat exchanger and controls the second heat transfer medium in the second circulation loop to exchange heat with the fourth heat transfer medium in the fourth circulation loop in order to heat the fourth heat transfer medium and thus improve the heating efficiency of the power battery.

[0174] In other possible implementations, the ninth preset condition may also be that the controller receives a heating request signal. This request signal may be issued by the occupant through the vehicle's central control screen, by the occupant through voice control, or by a physical button; or it may be generated by the controller based on the occupant's physiological characteristics or preset preferences, and this application does not impose any restrictions on this.

[0175] In summary, regarding the heating of the first and second compartments, the controller monitors the outside temperature in real time. When the outside temperature is lower than a first preset temperature, the controller controls the first heat transfer medium to flow through the heat exchange plate to heat the first compartment. When the outside temperature is lower than the first preset temperature but higher than a third preset temperature, the controller controls the second heater to heat the second compartment. When the outside temperature is lower than the first preset temperature but lower than the third preset temperature, the controller controls the second circulation loop to heat the fourth heat transfer medium and controls the fourth heat transfer medium to flow through the fourth heat exchanger to assist the second heater in heating the second compartment.

[0176] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0177] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A thermal management system, characterized in that, include: A first circulation loop is used to circulate a first heat transfer medium. The first circulation loop includes a heat exchange plate, which is installed inside the carriage. The heat exchange plate is provided with a flow channel for the first heat transfer medium to pass through in order to exchange heat with the carriage.

2. The thermal management system according to claim 1, characterized in that, The heat exchange plate comprises a heat homogenizing layer, a main body layer, and an insulation layer stacked in sequence. The flow channel is located in the main body layer.

3. The thermal management system according to claim 2, characterized in that, The main body layer has a flow channel cavity, and the main body layer has a plurality of partition walls protruding toward the flow channel cavity on the side facing the insulation layer. The plurality of partition walls separate the flow channel cavity to form the flow channel.

4. The thermal management system according to claim 1, characterized in that, The first circulation loop also includes a first heat exchanger, which is disposed at the bottom of the carriage to exchange heat with the bottom air of the carriage.

5. The thermal management system according to claim 1, characterized in that, The first circulation loop further includes a first heater, which is used to heat the first heat transfer medium.

6. The thermal management system according to claim 1, characterized in that, The thermal management system further includes a second circulation loop for circulating a second heat transfer medium. The second circulation loop is heat-exchange connected to the first circulation loop so that the second heat transfer medium exchanges heat with the first heat transfer medium.

7. The thermal management system according to claim 6, characterized in that, The second circulation loop includes a compressor, a second heat exchanger, and a third heat exchanger connected in series; the second heat exchanger is installed in the carriage, and the third heat exchanger is installed outside the carriage. The compressor is configured to drive the second heat transfer medium through the second heat exchanger to exchange heat with the air in the vehicle compartment, and to drive the second heat transfer medium through the third heat exchanger to exchange heat with the air outside the vehicle compartment.

8. The thermal management system according to claim 1, characterized in that, The thermal management system further includes a third circulation loop, which is used to circulate a third heat transfer medium and is used to connect with a heat source for heat exchange, so that the third heat transfer medium can exchange heat with the heat source. The third circulation loop is also heat-exchange connected to the first circulation loop so that the third heat transfer medium exchanges heat with the first heat transfer medium.

9. The thermal management system according to claim 1, characterized in that, The thermal management system further includes a second circulation loop and a third circulation loop, wherein the second circulation loop is used to circulate a second heat transfer medium and the third circulation loop is used to circulate a third heat transfer medium. The third circulation loop is also heat-exchange connected to the second circulation loop so that the third heat transfer medium exchanges heat with the second heat transfer medium.

10. The thermal management system according to claim 1, characterized in that, The thermal management system further includes a fourth circulation loop, which is used to circulate a fourth heat transfer medium. The fourth circulation loop is connected to the battery heat exchanger so that the fourth heat transfer medium exchanges heat with the battery. The fourth circulation loop is also heat-exchange connected to the first circulation loop so that the fourth heat transfer medium exchanges heat with the first heat transfer medium.

11. The thermal management system according to claim 1, characterized in that, The thermal management system further includes a second circulation loop and a fourth circulation loop. The second circulation loop is used to circulate a second heat transfer medium, and the fourth circulation loop is used to circulate a fourth heat transfer medium. The fourth circulation loop is connected to the battery for heat exchange, so that the fourth heat transfer medium exchanges heat with the battery. The fourth circulation loop is also heat-exchange connected to the second circulation loop so that the fourth heat transfer medium exchanges heat with the second heat transfer medium.

12. The thermal management system according to claim 10 or 11, characterized in that, The carriage includes a first compartment and a second compartment, and the heat exchange plate is located in the first compartment; The fourth circulation loop includes a fourth heat exchanger, which is located in the second compartment to exchange heat with the second compartment.

13. The thermal management system according to claim 10 or 11, characterized in that, The carriage includes a first compartment and a second compartment, and the heat exchange plate is located in the first compartment; The fourth circulation loop also includes a second heater for heating the second compartment.

14. A thermal management method, applied to the thermal management system according to any one of claims 1-13, characterized in that, The thermal management method includes: When the first preset condition is met, the first heat transfer medium in the first circulation loop is controlled to flow through the flow channel of the heat exchange plate to exchange heat with the carriage.

15. The thermal management method according to claim 14, characterized in that, The first preset condition includes: the outside temperature of the vehicle is lower than the first preset temperature.

16. The thermal management method according to claim 14, characterized in that, The first circulation loop further includes a first heat exchanger, which is disposed on the side of the carriage near the heat exchange plate. The thermal management method further includes: When the second preset condition is met, the first heat transfer medium in the first circulation loop is controlled to flow through the first heat exchanger to exchange heat with the carriage.

17. The thermal management method according to claim 16, characterized in that, The second preset condition includes: the interior temperature is lower than the second preset temperature; or The second preset condition includes: the interior temperature is lower than the second preset temperature, and the first preset condition includes: the interior temperature is higher than the third preset temperature; the third preset temperature is lower than the second preset temperature.

18. The thermal management method according to claim 14, characterized in that, The thermal management system further includes a second circulation loop for circulating a second heat transfer medium, and the thermal management method further includes: When the third preset condition is met, the second heat transfer medium in the second circulation loop is controlled to exchange heat with the first heat transfer medium in the first circulation loop in order to heat the first heat transfer medium.

19. The thermal management method according to claim 18, characterized in that, The third preset condition includes: the outside temperature of the vehicle is lower than the first preset temperature and higher than the fourth preset temperature; The fourth preset temperature is lower than the first preset temperature.

20. The thermal management method according to claim 14, characterized in that, The first circulation loop further includes a first heater, and the thermal management system further includes a second circulation loop for circulating a second heat transfer medium. The thermal management method includes: When the fourth preset condition is met, the second heat transfer medium in the second circulation loop is controlled to exchange heat with the first heat transfer medium in the first circulation loop, and the first heater is controlled to heat the first heat transfer medium.

21. The thermal management method according to claim 20, characterized in that, The fourth preset condition includes: the outside temperature of the vehicle is less than the fifth preset temperature and greater than the fourth preset temperature; The fourth preset temperature is lower than the first preset temperature.

22. The thermal management method according to claim 14, characterized in that, The first circulation loop further includes a first heater, and the thermal management method further includes: When the fifth preset condition is met, the first heater is controlled to heat the first heat transfer medium.

23. The thermal management method according to claim 22, characterized in that, The fifth preset condition includes: the outside temperature of the vehicle is lower than the fourth preset temperature.

24. The thermal management method according to claim 14, characterized in that, The carriage includes a first compartment and a second compartment, and the heat exchange plate is disposed in the first compartment; the thermal management system further includes a second circulation loop, a fourth circulation loop, and a second heater, the fourth circulation loop including a fourth heat exchanger; the thermal management method further includes: When the sixth preset condition is met, the second circulation loop is controlled to exchange heat with the fourth circulation loop to heat the fourth heat transfer medium, and the heated fourth heat transfer medium flows through the second heater to exchange heat with the second compartment. When the seventh preset condition is met, the second heater is controlled to exchange heat with the second compartment in order to heat the second compartment.

25. The thermal management method according to claim 24, characterized in that, The sixth preset condition includes: the outside temperature is lower than the fourth preset temperature; and / or The seventh preset condition includes an outside temperature greater than the fourth preset temperature.

26. The thermal management method according to claim 14, characterized in that, The thermal management system further includes a second circulation loop, the second circulation loop including a second heat exchanger, the second heat exchanger being disposed on the side of the carriage away from the heat exchange plate, and the thermal management method further includes: When the eighth preset condition is met, the second heat exchanger is controlled to dissipate heat from the carriage.

27. The thermal management method according to claim 26, characterized in that, The eighth preset condition includes: the difference between the temperature of the second heat exchanger and the average temperature at the heat exchange plate is greater than the sixth preset temperature.

28. The thermal management method according to claim 14, characterized in that, The thermal management system further includes a third circulation loop, and the thermal management method further includes: The third heat transfer medium in the third circulation loop is controlled to heat the first heat transfer medium in the first circulation loop.

29. The thermal management method according to claim 14, characterized in that, The control of the third heat transfer medium in the third circulation loop to heat the first heat transfer medium in the first circulation loop includes: Control the connection between the first loop and the second loop.

30. The thermal management method according to claim 14, characterized in that, The thermal management system further includes a second circulation loop and a fourth circulation loop, the second circulation loop further including a third heat exchanger, the third heat exchanger being installed outside the carriage; the thermal management method further includes: When the ninth preset condition is met, the third heat exchanger is shut down, and the second heat transfer medium in the second circulation loop is controlled to exchange heat with the fourth heat transfer medium in the fourth circulation loop in order to heat the fourth heat transfer medium.

31. The thermal management method according to claim 30, characterized in that, The ninth preset condition includes an outside temperature that is lower than the fourth preset temperature.

32. A storage medium, characterized in that, The storage medium stores a control program for the thermal management system, which is executed by the controller to implement the thermal management method according to any one of claims 14-31.

33. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a controller, implements the thermal management method according to any one of claims 14-31.

34. A thermal management device, characterized in that, It includes a controller, a memory, and a computer program stored in the memory and executable on the controller, the computer program being configured to implement the steps of the thermal management method according to any one of claims 14-31.

35. A vehicle, characterized in that, This includes a thermal management system according to any one of claims 1-13, a storage medium according to claim 32, a computer program product according to claim 33, or a thermal management device according to claim 34.

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