Control method and vehicle

Abstract

Control method and vehicle. The control method includes obtaining a heat exchange signal and controlling at least one of a first main pipe in a thermal management system and a second main pipe in the thermal management system to exchange heat with a battery, the first main pipe being used to exchange heat with a first region of the battery and the second main pipe being used to exchange heat with a second region of the battery, the first region being different from the second region.

Description

[Technical Field]

[0001] Cross-reference of related applications This disclosure claims priority and interest to Chinese Patent Application No. 2022112049102, filed on 29 September 2022. The entire contents of the above-referenced application are incorporated herein by reference.

[0002] This application relates to the field of vehicles, and more specifically to control methods and vehicles. [Background technology]

[0003] In existing architectures of heat pump systems for overall vehicle thermal management, the functions of the thermal management system are not diversified, heat exchange for battery modules often fails to meet battery temperature requirements, resulting in significant energy loss and low operational efficiency of the thermal management system. [Overview of the project]

[0004] This disclosure aims to solve at least one of the technical problems present in the related technology. Accordingly, this disclosure provides a control method for heat exchange with a battery at different efficiencies or in different thermal management modes.

[0005] A control method according to an embodiment of the present disclosure is applicable to a thermal management system. The control method includes acquiring a heat exchange signal and controlling at least one of a first main pipe and a second main pipe in the thermal management system to exchange heat with a battery, wherein the first main pipe is configured to exchange heat with a first region in the battery, and the second main pipe is configured to exchange heat with a second region in the battery, and the first region is different from the second region.

[0006] According to the control method for a thermal management system in embodiments of the present disclosure, at least one of the first and second main tubes is controlled to exchange heat with the battery so that the battery heat exchange module exchanges heat with the battery at different efficiencies or in different thermal management modes. For example, based on the battery temperature, the battery heat exchange module can exchange heat with the battery at appropriate efficiencies or in different thermal management modes, thereby reducing the energy consumption of the thermal management system and improving its functionality.

[0007] In some embodiments of the present disclosure, the temperature of one of the first and second regions is higher than the temperature of the other of the first and second regions, or the rate of temperature increase of the first region is higher than the rate of temperature increase of the second region, or the first region is an electrode region of a battery.

[0008] In some embodiments of the present disclosure, when a first condition is met, at least one of a first main tube and a second main tube is controlled to cool the battery, the first condition includes at least one of the following: battery temperature ≥ first temperature threshold, charging power ≥ first power threshold, discharging power ≥ second power threshold, charging voltage ≥ first voltage threshold, discharging voltage ≥ second voltage threshold, charging current ≥ first current threshold, discharging current ≥ second current threshold, or a user cooling command.

[0009] In some embodiments of the present disclosure, when a second condition is met, at least one of the first and second main tubes is controlled to heat the battery, the second condition includes at least one of the following: battery temperature ≤ second temperature threshold, discharge power ≤ third power threshold, discharge voltage ≤ third voltage threshold, discharge current ≤ third current threshold, termination of battery self-heating, or a user heating command.

[0010] In some embodiments of this disclosure, the heat exchange parameters of the first main pipe and the second main pipe are different.

[0011] In some embodiments of the present disclosure, the heat exchange parameters of the first heat exchange unit and the second heat exchange unit are different, the first heat exchange unit is configured to exchange heat with a first region and is located in a first main pipe, and the second heat exchange unit is configured to exchange heat with a second region and is located in a second main pipe.

[0012] In some embodiments of this disclosure, different heat exchange parameters include different heat exchange rates or different heat exchange efficiencies.

[0013] In some embodiments of this disclosure, the flow rates of the first main pipe and the second main pipe are different.

[0014] In some embodiments of this disclosure, the pressures in the first main pipe and the second main pipe are different, resulting in different flow rates.

[0015] In some embodiments of the present disclosure, the control method further includes having different heat exchange parameters for the first and second main pipes when a third condition is met.

[0016] In some embodiments of this disclosure, the third condition is the temperature rise rate V of the first region. H ≥ First rate threshold, or the difference V0 between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ First temperature rise threshold, or temperature T of the first region H and the temperature T of the second region L The difference is 0 ≥ the third temperature threshold, where T0 = T H -T L Includes.

[0017] In some embodiments of the present disclosure, the temperature T of the first region H This is the maximum temperature of the battery, and the temperature in the second region T L This is the minimum battery temperature.

[0018] In some embodiments of the present disclosure, the control method further comprises that when a fourth condition is satisfied, at least one of the first main pipe and the second main pipe cools the battery, and the heat exchange parameters of the first main pipe and the second main pipe are different.

[0019] In some embodiments of the present disclosure, the fourth condition includes battery temperature ≧ a fourth temperature threshold.

[0020] In some embodiments of the present disclosure, the fourth condition includes at least one of battery charging power ≧ a first threshold, battery discharging power ≧ a second threshold, or motor power ≧ a third threshold.

[0021] In some embodiments of the present disclosure, the fourth condition includes at least one of charging voltage ≧ a third voltage threshold, or discharging voltage ≧ a fourth voltage threshold.

[0022] In some embodiments of the present disclosure, the fourth condition includes at least one of charging current ≧ a fourth current threshold, or discharging current ≧ a fifth current threshold.

[0023] In some embodiments of the present disclosure, the fourth condition includes at least one of completion of battery self-heating, or a regional cooling command input by a user.

[0024] In some embodiments of the present disclosure, the control method further comprises that when a fifth condition is satisfied, at least one of the first main pipe and the second main pipe heats the battery, and the heat exchange parameters of the first main pipe and the second main pipe are different.

[0025] In some embodiments of the present disclosure, the fifth condition includes battery temperature ≦ a fifth temperature threshold.

[0026] In some embodiments of the present disclosure, the fifth condition includes at least one of battery charging power ≦ a fourth threshold, or battery discharging power ≦ a fifth threshold.

[0027] In some embodiments of the present disclosure, the fifth condition includes at least one of the following: discharge voltage ≤ fifth voltage threshold, or discharge current ≤ sixth current threshold.

[0028] In some embodiments of the present disclosure, the fifth condition includes at least one of the following: charging voltage ≤ sixth voltage threshold, charging current ≤ seventh current threshold, or a region heating command entered by the user.

[0029] In some embodiments of the present disclosure, a first region is preferentially cooled such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

[0030] In some embodiments of this disclosure, the first region is preferentially cooled when the sixth condition is met.

[0031] In some embodiments of the present disclosure, the sixth condition includes the difference between the temperature of the first region and the temperature of the second region ≥ a first temperature difference threshold and the battery temperature ≥ a fourth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ a first rate difference threshold and the battery temperature ≥ a fourth temperature threshold.

[0032] In some embodiments of the present disclosure, preferential cooling of the first region includes the flow rate of the heat exchange medium in the first main pipe being greater than the flow rate of the heat exchange medium in the second main pipe.

[0033] In some embodiments of this disclosure, the difference between the flow rate of the heat exchange medium in the first main pipe and the flow rate of the heat exchange medium in the second main pipe is greater than or equal to the first flow rate threshold.

[0034] In some embodiments of the present disclosure, preferential cooling of the first region includes the temperature of the heat exchange medium at the inlet end of the first main pipe being lower than the temperature of the heat exchange medium at the inlet end of the second main pipe.

[0035] In some embodiments of the present disclosure, preferential cooling of the first region includes the pressure at the outlet end of the first main pipe being less than the pressure at the outlet end of the second main pipe.

[0036] In some embodiments of the present disclosure, a second region is preferentially heated such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature increase of the first region of the battery is higher than the rate of temperature increase of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

[0037] In some embodiments of this disclosure, the second region is preferentially heated when the seventh condition is met.

[0038] In some embodiments of the present disclosure, the seventh condition includes the difference between the temperature of the first region and the temperature of the second region ≥ the second temperature difference threshold and the battery temperature ≤ the fifth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ the second rate difference threshold and the battery temperature ≤ the fifth temperature threshold.

[0039] In some embodiments of the present disclosure, controlling the heating of a second region preferentially includes the flow rate of the heat exchange medium in the second main pipe being greater than the flow rate of the heat exchange medium in the first main pipe.

[0040] In some embodiments of this disclosure, the difference between the flow rate of the heat exchange medium in the second main pipe and the flow rate of the heat exchange medium in the first main pipe is greater than or equal to the second flow rate threshold.

[0041] In some embodiments of the present disclosure, controlling the heating of a second region preferentially includes the temperature of the heat exchange medium at the inlet end of the second main pipe being higher than the temperature of the heat exchange medium at the inlet end of the first main pipe.

[0042] In some embodiments of this disclosure, the difference between the temperature of the heat exchange medium at the inlet end of the second main pipe and the temperature of the heat exchange medium at the inlet end of the first main pipe is greater than or equal to the sixth threshold.

[0043] In some embodiments of the present disclosure, preferential heating of the second region includes the pressure at the outlet end of the second main pipe being greater than the pressure at the outlet end of the first main pipe.

[0044] In some embodiments of the present disclosure, when the eighth condition is met, the first region stops being preferentially cooled and / or the second region stops being preferentially heated such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature increase of the first region of the battery is higher than the rate of temperature increase of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

[0045] In some embodiments of the present disclosure, the eighth condition includes that the temperature difference between the first region and the second region is less than the seventh threshold, or that the rate of temperature increase between the first region and the second region is the same, or that the difference in the rate of temperature increase between the first region and the second region is less than the eighth threshold.

[0046] According to embodiments of this disclosure, a vehicle is provided to perform a control method for a thermal management system according to the aforementioned embodiments of this disclosure.

[0047] In the vehicle according to the embodiments of the present disclosure, at least one of the first and second main pipes is controlled to exchange heat with the battery so that the battery heat exchange module exchanges heat with the battery at different efficiencies or in different thermal management modes. For example, based on the battery temperature, the battery heat exchange module can exchange heat with the battery at appropriate efficiencies or in different thermal management modes, thereby reducing the energy consumption of the thermal management system and improving the functionality of the thermal management system.

[0048] Further aspects and advantages of this disclosure are given in the following description, some of which may be evident from the following description or learned from the practice of this disclosure.

[0049] The foregoing and / or further aspects and advantages of this disclosure will become apparent and easier to understand in the description made with reference to the following accompanying drawings. [Brief explanation of the drawing]

[0050] [Figure 1] This is a schematic diagram of a thermal management system according to one embodiment of the present disclosure. [Figure 2] This is a schematic diagram of a thermal management system and a dynamic thermal management subsystem according to one embodiment of the present disclosure. [Figure 3] This is a schematic diagram of a first implementation form of a battery core according to one embodiment of the present disclosure. [Figure 4] This is a schematic diagram of a second implementation form of a battery core according to one embodiment of the present disclosure. [Figure 5] This is a schematic diagram of a first implementation form of a battery pack according to one embodiment of the present disclosure. [Figure 6] This is a schematic diagram of a second implementation form of a battery pack according to one embodiment of the present disclosure. [Figure 7] This is a schematic diagram of a thermal management system according to one embodiment of the present disclosure. [Figure 8] These are schematic diagrams of vehicles according to several embodiments of the present disclosure. [Modes for carrying out the invention]

[0051] The following describes embodiments of the present disclosure in detail. Examples of embodiments are shown in the accompanying drawings, and in all accompanying drawings, identical or similar reference numerals indicate identical or similar components or components having identical or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and are intended merely to illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0052] The following describes a control method according to an embodiment of the present disclosure with reference to Figures 1, 2, and 7. The control method is applicable to a thermal management system. The thermal management system includes a battery heat exchange module, which includes a first main pipe 10a and a second main pipe 10b.

[0053] The control method according to the embodiments of this disclosure includes the following control operations.

[0054] A heat exchange signal is acquired. Specifically, the heat exchange signal may be a cooling / heating command sent by the user, or it may be a heat exchange signal detected by the detection module. For example, if it is detected that the battery's maximum temperature exceeds a first set temperature, a heat exchange signal is sent to perform cooling, or if it is detected that the battery's minimum temperature is below a second set temperature, a heat exchange signal is sent to perform heating. Of course, please understand that the above is merely an illustrative explanation.

[0055] In response to a heat exchange signal, at least one of a first main tube and a second main tube in the thermal management system is controlled to exchange heat with the battery, wherein the first main tube is configured to exchange heat with a first region in the battery, and the second main tube is configured to exchange heat with a second region in the battery, the first region being different from the second region.

[0056] The fact that the first region differs from the second region means that the first main pipe 10a and the second main pipe 10b are located at different locations in the battery 300, and it should be noted that the first main pipe and the second main pipe can be used to perform heat exchange at different locations in the battery 300. It should be further noted that the main pipes described in this disclosure refer to flow paths for circulating the heat exchange medium, and the main pipes may be junction pipes, branch lines bypassing junction pipes, etc.

[0057] Controlling at least one of the first main pipe 10a and the second main pipe 10b to exchange heat with the battery 300 means that the first main pipe 10a and the second main pipe 10b can exchange heat independently. Either the first main pipe 10a or the second main pipe 10b may be controlled to exchange heat with the battery 300, or the first main pipe 10a and the second main pipe 10b may be controlled to exchange heat with the battery 300 simultaneously.

[0058] If the battery requires a large amount of heat exchange, the first main pipe 10a and the second main pipe 10b may exchange heat simultaneously. If the battery requires a small amount of heat exchange, either the first main pipe 10a or the second main pipe 10b may exchange heat.

[0059] According to the control method for the thermal management system in the embodiments of this disclosure, at least one of the first main pipe 10a and the second main pipe 10b is controlled to exchange heat with the battery 300 so that the battery heat exchange module exchanges heat with the battery at different efficiencies or in different thermal management modes. For example, based on the battery temperature, the battery heat exchange module can exchange heat with the battery at appropriate efficiencies or in different thermal management modes, thereby reducing the energy consumption of the thermal management system 100 and improving the functionality of the thermal management system 100.

[0060] In some embodiments of this disclosure, the temperature of one of the first and second regions is higher than the temperature of the other; in other words, the temperatures of the first and second regions are different. Note that different temperatures mean that the temperatures of the first and second regions are different when the battery is in an operating state. An operating state of the battery includes charging, discharging, etc. Different temperatures may include the average temperature of the first region being different from the average temperature of the second region, or the highest temperature of the first region being different from the highest temperature of the second region, or the lowest temperature of the first region being different from the lowest temperature of the second region. Alternatively, it may be required that, at the same detection point, the temperature of at least a portion of the first region is different from the temperature of at least a portion of the second region. In some specific examples of this disclosure, the first region includes the electrode heating temperature region of the battery 300, and the second region includes the non-electrode heating temperature region of the battery 300.

[0061] In some embodiments of this disclosure, the average temperature T1 of the first region is different from the average temperature T2 of the second region. In other words, the average temperature of the first region is T1, the average temperature of the second region is T2, and T1 is different from T2. The difference between the average temperature of the first region and the average temperature of the second region is greater than the first temperature difference. The first temperature difference is used to represent the uniformity of the battery's charge and discharge performance in the first and second regions. For example, a blade lithium iron phosphate battery is used as an example. The difference between the average temperature T1 of the first region and the average temperature T2 of the second region is ΔT1. If ΔT1 < 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered good. If ΔT1 > 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered poor.

[0062] Therefore, the battery may be subjected to regional heating and cooling based on the average temperature of the region, thereby improving the temperature uniformity of the battery.

[0063] In some embodiments of this disclosure, the maximum temperature of a first region and the maximum temperature of a second region are different, and the difference between the maximum temperatures of the first and second regions is greater than the second temperature difference. The second temperature difference is used to represent the uniformity of the battery's charge and discharge performance in the first and second regions. For example, a lithium ferrous phosphate blade battery is used as an example. The difference between the maximum temperature T3 of the first region and the maximum temperature T4 of the second region is ΔT2. If ΔT2 < 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered good. If ΔT2 > 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered poor. Therefore, region cooling may be performed on the battery based on the maximum temperatures of different regions of the battery, which can improve the temperature uniformity of the battery.

[0064] In some embodiments of this disclosure, the minimum temperature of the first region and the minimum temperature of the second region are different, and the difference between the minimum temperature of the first region and the minimum temperature of the second region is greater than a third temperature difference. The third temperature difference is used to represent the uniformity of the battery's charge and discharge performance in the first and second regions. For example, a lithium ferrous phosphate blade battery is used as an example. The difference between the minimum temperature T5 in the first region and the minimum temperature T6 in the second region is ΔT3. If ΔT3 < 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered good. If ΔT3 > 5℃, the uniformity of the battery's charge and discharge performance in the first and second regions may be considered poor.

[0065] Therefore, regional heating can be applied to the battery based on the lowest temperature in different areas of the battery, thereby improving the temperature uniformity of the battery.

[0066] It should be noted that ΔT1, ΔT2, and ΔT3 may be the same or different, and are specifically set based on battery parameters. Battery parameters may include battery capacity, battery shape (cylindrical, square, long-blade, short-blade, etc.), battery material (lithium ferrous phosphate battery, lithium battery, etc.), and battery form (liquid battery, solid battery, semi-solid battery, etc.).

[0067] In some embodiments of this disclosure, the temperature rise rate of the first region is higher than that of the second region, i.e., the temperature rise rates of the first region and the second region are different. Note that the different temperature rise rates mean that when the battery is in operation, the temperature rise rates of the first region and the second region are different. The battery's operating state includes charging, discharging, etc. In this way, by using the first main pipe 10a and the second main pipe 10b, independent heat exchange can be achieved in the first region and the second region, thereby realizing region temperature control.

[0068] For example, if the rate of temperature rise in the first region is greater than the rate of temperature rise in the second region, or if the temperature of the first region is higher than the temperature of the second region, the heat exchange rates of the first main pipe 10a and the second main pipe 10b may be made different. For example, during cooling, the temperature of the heat exchange medium in the first main pipe 10a may be lower than the temperature of the heat exchange medium in the second main pipe 10b, thereby increasing the rate of temperature decrease in the first region and thereby achieving temperature uniformity of the battery 300.

[0069] Generally, when the battery 300 is operating, the electrodes generate a large amount of heat, and the temperature in the area near the electrodes becomes higher than the temperature in the area away from the electrodes. In some examples of this disclosure, a first area includes the electrode heat-generating temperature area, and a second area includes the non-electrode heat-generating temperature area of ​​the battery 300. Thus, the temperature uniformity of the battery can be further improved.

[0070] In some embodiments of this disclosure, when a first condition is met, at least one of the first and second main tubes is controlled to cool the battery. The first condition includes at least one of the following: battery temperature ≥ first temperature threshold, charging power ≥ first power threshold, discharging power ≥ second power threshold, charging voltage ≥ first voltage threshold, discharging voltage ≥ second voltage threshold, charging current ≥ first current threshold, discharging current ≥ second current threshold, or a user cooling command. Note that if at least one of the following conditions is met, i.e., charging power ≥ first power threshold, discharging power ≥ second power threshold, charging voltage ≥ first voltage threshold, discharging voltage ≥ second voltage threshold, charging current ≥ first current threshold, or discharging current ≥ second current threshold, it indicates that the battery temperature is high, and in this case, the battery needs to be cooled. Therefore, depending on the actual situation, at least one of the first and second main tubes may be controlled to cool the battery. The battery temperature in "Battery temperature ≥ First temperature threshold" may be the average temperature of the battery or the maximum temperature of the battery.

[0071] In some embodiments of this disclosure, if it is determined that the maximum temperature of the battery is ≥ 38°C, at least one of the first and second main tubes is controlled to cool the battery. If it is determined that the maximum temperature of the battery is ≤ 34°C, the cooling is terminated.

[0072] In some embodiments of this disclosure, the first region is the electrode region of the battery, and the second region is the non-electrode region of the battery. At least one of the following conditions is met: charging power ≥ first power threshold, discharging power ≥ second power threshold, charging voltage ≥ first voltage threshold, discharging voltage ≥ second voltage threshold, charging current ≥ first current threshold, or discharging current ≥ second current threshold, which indicates that the electrodes generate a large amount of heat and the temperature of the first region is high. Therefore, at least the first main tube is controlled to cool the first region.

[0073] It should be noted that the first temperature threshold, first power threshold, second power threshold, first voltage threshold, second voltage threshold, first current threshold, and second current threshold can be set according to the actual situation and may be specifically set based on, for example, battery parameters. Battery parameters may include battery capacity, battery shape (cylindrical, square, long-blade, short-blade, etc.), battery material (lithium ferrous phosphate battery, lithium battery, etc.), and battery form (liquid battery, solid battery, semi-solid battery, etc.).

[0074] In some embodiments of this disclosure, when a second condition is met, at least one of the first and second main tubes is controlled to heat the battery. The second condition includes at least one of the following: battery temperature ≤ second temperature threshold, discharge power ≤ third power threshold, discharge voltage ≤ third voltage threshold, discharge current ≤ third current threshold, termination of battery self-heating, or a user heating command. The battery temperature in "battery temperature ≤ second temperature threshold" may be the average temperature of the battery or the lowest temperature of the battery.

[0075] It should be noted that ambient temperature affects the battery's discharge power and discharge voltage. If at least one of the following conditions is met—namely, discharge power ≤ third power threshold, discharge voltage ≤ third voltage threshold, or discharge current ≤ third current threshold—it indicates that the battery is excessively cold due to ambient temperature, resulting in low discharge power, discharge voltage, or discharge current. In this case, at least one of the first and second main tubes is controlled to heat the battery.

[0076] In some embodiments of this disclosure, if it is determined that the minimum temperature of the battery is ≤ 10°C, at least one of the first and second main tubes is controlled to heat the battery. If it is determined that the minimum temperature of the battery is ≥ 12°C, the heating is terminated.

[0077] In some embodiments of this disclosure, the heat exchange parameters of the first and second main pipes are different. Different heat exchange parameters include cases where the flow rate of the heat exchange medium is different, or where the temperature of the heat exchange medium is different. By making the heat exchange parameters of the first and second main pipes different, regional heat exchange control of the first and second regions can be achieved. For example, if the heat exchange requirements of the first region are higher than those of the second region, the first main pipe is controlled to preferentially perform heat exchange in the first region, thereby cooling or heating the first region more quickly and improving the temperature uniformity of the battery.

[0078] Furthermore, different heat exchange parameters include differences in the amount of heat exchanged or differences in heat exchange efficiency.

[0079] The heat exchange rate refers to the heat dissipated into the air per unit time through the first or second main pipe, and the heat exchange efficiency is given by (heat exchange rate ÷ time) / (flow rate of heat exchange medium × temperature difference), where heat exchange rate ÷ time refers to the total heat of the heat exchange medium in the first or second main pipe during a specific period, flow rate refers to the flow rate of the fluid in the first or second main pipe, and temperature difference refers to the temperature difference between the inlet and outlet ends of the first main pipe, or between the inlet and outlet ends of the second main pipe. Therefore, by controlling the flow rate of the heat exchange medium and controlling the temperature difference of the heat exchange medium, the heat exchange efficiencies of the first and second main pipes can be made different. The higher the heat exchange efficiency and the larger the heat exchange volume, the greater the cooling or heating effect of the region. The first and second main pipes are arranged corresponding to the first and second regions, respectively, and the first and second regions can be regions with different heat generation amounts or different temperature rise rates, thereby achieving regional heat dissipation. The first main pipe with high heat exchange efficiency is provided in the region with a large heat generation amount and a high temperature rise rate (first region), and the second main pipe with low heat exchange efficiency is provided in the region with a small heat generation amount and a low temperature rise rate (second region), taking into consideration both the energy consumption of the battery and temperature uniformity.

[0080] In some embodiments of the present disclosure, the heat exchange parameters of the first heat exchange unit and the second heat exchange unit are different. The first heat exchange unit is configured to exchange heat with a first region and is located in a first main pipe, and the second heat exchange unit is configured to exchange heat with a second region and is located in a second main pipe.

[0081] The first heat exchange unit and the second heat exchange unit may be heat exchange components such as a heat exchanger or a wound heat exchange tube, and the first heat exchange unit 21 and the second heat exchange unit 22 are provided to facilitate heat exchange with the battery 300.

[0082] Generally, when the battery 300 is operating, the electrodes generate a large amount of heat, and the temperature in the area near the electrodes becomes higher than the temperature in the area away from the electrodes. In some examples of this disclosure, a first area includes the electrode heat-generating temperature area, and a second area includes the non-electrode heat-generating temperature area of ​​the battery 300. Thus, the temperature uniformity of the battery can be further improved.

[0083] Furthermore, on one or both sides of the battery, a first heat exchange unit 21 is provided corresponding to the electrode heat generation temperature region 301b, and a second heat exchange unit 22 is positioned in the non-electrode heat generation temperature region 301a of the battery.

[0084] In some examples of this disclosure, the first heat exchange unit 21 and the second heat exchange unit 22 are located on the same side of the battery 300, and at least one of the first heat exchange unit 21 and the second heat exchange unit 22 is selected based on the temperature of different locations within the battery to exchange heat and achieve temperature control of different areas on the same side of the battery, thereby improving the temperature uniformity of the battery and improving battery performance. Of course, it should be understood that the first heat exchange unit 21 and the second heat exchange unit 22 can alternatively be located on different sides of the battery 300. When located on different sides of the battery compared to when they are located on the same side of the battery, the first heat exchange unit 21 and the second heat exchange unit 22 can heat different areas of the battery, thereby further improving the temperature uniformity of the battery and improving battery performance.

[0085] The first heat exchange unit 21 and the second heat exchange unit 22 are in contact with the battery core of the battery and can directly exchange heat with the battery core. For example, the first heat exchange unit 21 and the second heat exchange unit 22 may be the upper cover of the battery, or they may be the lower cover of the battery.

[0086] The first heat exchange unit 21 and the second heat exchange unit 22 are in contact with the battery pack and can indirectly exchange heat with the battery core.

[0087] The first heat exchange unit 21 and the second heat exchange unit 22 may be located in areas corresponding to different piping on the same heat exchange plate; in other words, the piping in the first heat exchange unit 21 and the piping in the second heat exchange unit 22 may be arranged on the same heat exchange plate.

[0088] The first heat exchange unit 21 and the second heat exchange unit 22 may be separate components instead.

[0089] In some embodiments of this disclosure, the flow rates of the first main pipe and the second main pipe are different. Therefore, the heat exchange rates of the first and second main pipes are different. For example, if the first region needs to be preferentially cooled, the flow rate of the first main pipe may be greater than that of the second main pipe. Alternatively, if the second region needs to be preferentially heated, the flow rate of the second main pipe may be greater than that of the first main pipe. Note that the heat exchange medium in the first main pipe may be a refrigerant or water. The heat exchange medium in the second main pipe may also be a refrigerant or water. In some examples of this disclosure, the different flow rates of the first and second heat exchange units facilitate region control of the battery, thereby improving temperature uniformity of the battery.

[0090] In some embodiments of this disclosure, the pressure in the first main pipe and the pressure in the second main pipe are different, resulting in different flow rates. Specifically, the lengths of the first main pipe and the second main pipe may be different, resulting in different pressures in the first and second main pipes. Alternatively, the pressure of the heat exchange medium flowing into the first main pipe and the pressure of the heat exchange medium flowing into the second main pipe may be different, resulting in different flow rates, thereby achieving region control.

[0091] In some embodiments of this disclosure, the control method further includes having different heat exchange parameters for the first and second main pipes when a third condition is met. In other words, the heat exchange parameters for the first and second main pipes are controlled to be different only when it is necessary for the third condition to be met, thereby achieving region control. If the third condition is not met, the heat exchange parameters for the first and second main pipes may be controlled to be the same, or both the first and second main pipes may be controlled not to operate. Thus, region control can be achieved only when the condition is met, and energy consumption can be reduced.

[0092] In some embodiments of this disclosure, the heat exchange signal and the third condition are different signals. If the heat exchange signal is acquired and the third condition is not met, at least one of the first and second main pipes is controlled to first exchange heat with the battery. If the third condition is met, the heat exchange parameters of the first and second main pipes are controlled to be different, for example, the flow rates of the first and second main pipes may be controlled to be different. In some examples of this disclosure, if the heat exchange signal is acquired and the battery is cooled, the flow rates of the first and second main pipes are controlled to be the same, and if it is determined that the third condition is met, the flow rate of the first main pipe is controlled to be different from the flow rate of the second main pipe.

[0093] In some embodiments of this disclosure, the heat exchange signal includes determining whether a third condition is met. If it is determined that the third condition is met, it is determined that the heat exchange signal has been acquired. In this case, the heat exchange parameters of the first and second main pipes are directly controlled to be different. In other words, once the heat exchange signal is acquired, the thermal management system is directly controlled to enter region control mode.

[0094] In some embodiments of this disclosure, the third condition is the temperature rise rate V of the first region. H ≥ includes the first rate threshold. In other words, in this case, it is determined that the temperature rise in the first region is high, which creates a temperature difference between the first and second regions, and the heat exchange parameters of the first and second main tubes are controlled to be different, thereby achieving region control and improving the temperature uniformity of the battery.

[0095] In some embodiments of this disclosure, the third condition includes the difference V0 ≥ a first temperature rise threshold between the temperature rise rate of the first region and the temperature rise rate of the second region. In other words, in this case, the temperature rise rates of the first and second regions are different, a temperature difference is created between the first and second regions, thereby controlling the heat exchange parameters of the first and second main tubes to be different, achieving region control and improving the temperature uniformity of the battery.

[0096] In some embodiments of the present disclosure, the third condition is that the temperature T of the first region H and the temperature T of the second region L satisfy difference T0 ≧ a third temperature threshold, and T0 = T H -T L . In other words, in this case, a temperature difference is generated between the first region and the second region, the heat exchange parameters of the first main pipe and the second main pipe are controlled to be different, regional control is implemented, and the temperature uniformity of the battery is improved.

[0097] It should be noted that the first rate threshold, the first temperature rise threshold, and the third temperature threshold may be set according to actual situations, for example, may be specifically set based on battery parameters. The battery parameters may include battery capacity, battery shape (cylindrical, square, long blade-shaped, short blade-shaped, etc.), battery material (lithium iron phosphate battery, lithium battery, etc.), and battery form (liquid battery, solid battery, semi-solid battery, etc.). As another example, the first rate threshold, the first temperature rise threshold, and the third temperature threshold may be set based on the charging state and discharging state. In some embodiments of the present disclosure, when the temperature rise rate of the first region ≧2.5°C / min, and the temperature rise rate of the second region <2.5°C / min or the temperature rise rate of the second region <1.5°C / min, it indicates that the temperature rise rates of the first region and the second region are different.

[0098] In some embodiments of the present disclosure, the temperature T of the first region H is the maximum temperature of the battery, and the temperature T of the second region L is the minimum temperature of the battery. Therefore, based on the difference between the maximum temperature and the minimum temperature, it can be clearly determined whether there is a temperature difference between the first region and the second region to determine whether regional control needs to be performed.

[0099] In some embodiments of the present disclosure, the control method further includes that when the fourth condition is met, at least one of the first and second main pipes cools the battery, and the heat exchange parameters of the first and second main pipes are different. In other words, when it is determined that the fourth condition is met, both the first and second main pipes can be controlled to cool the battery, and the flow rates and / or temperatures of the heat exchange medium in the first and second main pipes can be different, so that the heat exchange parameters of the first and second main pipes are different. Alternatively, when it is determined that the fourth condition is met, one of the first and second main pipes may be controlled to operate to cool the battery, while the other is controlled not to operate.

[0100] In some embodiments of this application, the heat exchange signal may include determining whether a fourth condition is met. Thus, if it is determined that the fourth condition is met, it can be determined that a heat exchange signal has been received, and at least one of the first or second main tube is controlled to cool the battery, in which case the heat exchange parameters of the first and second main tubes are different.

[0101] In some embodiments of this disclosure, the heat exchange signal and the fourth condition are different signals. If the heat exchange signal is acquired and the fourth condition is not met, at least one of the first and second main pipes is controlled to first cool the battery. If the fourth condition is met, the heat exchange parameters of the first and second main pipes are controlled to be different, for example, the flow rates of the first and second main pipes may be controlled to be different.

[0102] In some embodiments of this disclosure, the fourth condition includes battery temperature ≥ fourth temperature threshold. Specifically, if it is determined that the battery temperature is higher than the fourth temperature threshold, it indicates that the battery temperature is high and that the battery needs to be cooled. In this case, at least one of the first and second main tubes is controlled to cool the battery, and in this case the heat exchange parameters of the first and second main tubes are different. The battery temperature in "battery temperature ≥ fourth temperature threshold" may be the battery's maximum temperature or the battery's average temperature.

[0103] In some embodiments of this disclosure, a fourth temperature threshold > a first temperature threshold. Specifically, if it is determined that the battery temperature ≥ the fourth temperature threshold, at least one of the first and second main pipes is controlled to cool the battery first, thereby different heat exchange parameters for the first and second main pipes, and achieving region control. For example, the first main pipe with a large flow rate exchanges heat with the first region with a high temperature, improving the cooling effect of the first region and improving the temperature uniformity of the battery. If it is determined that the battery temperature has fallen to above the first temperature threshold, region control is terminated, and at least one of the first and second main pipes is controlled to cool the battery.

[0104] In some embodiments of the present disclosure, the fourth condition includes at least one of the following: battery charging power ≥ first threshold, battery discharging power ≥ second threshold, or motor power ≥ third threshold. If at least one of the above is satisfied, it will be understood that this indicates the battery, in particular the electrodes, are generating a large amount of heat and need to be cooled. In this case, at least one of the first and second main tubes is controlled to cool the battery, and in this case the heat exchange parameters of the first and second main tubes are different.

[0105] Specifically, the first threshold and the first power threshold may be the same or different, and the second threshold and the second power threshold may be the same or different. If the first threshold and the first power threshold are the same, and the second threshold and the second power threshold are the same, then based on the battery temperature, it can be determined that the first or fourth condition is met. For example, if the battery temperature ≥ the fourth temperature threshold, then it is determined that the fourth condition is met. As another example, the temperature difference between the first region and the second region can be determined to determine whether the first or fourth condition is met.

[0106] In some embodiments of the present disclosure, the fourth condition includes at least one of the following: charging voltage ≥ third voltage threshold, or discharging voltage ≥ fourth voltage threshold. If at least one of the above is satisfied, it will be understood that this indicates the battery, in particular the electrodes, are generating a large amount of heat and need to be cooled. In this case, at least one of the first and second main tubes is controlled to cool the battery, and in this case the heat exchange parameters of the first and second main tubes are different.

[0107] Specifically, the first voltage threshold and the third voltage threshold may be the same or different, and the second voltage threshold and the fourth voltage threshold may be the same or different. If the first voltage threshold and the third voltage threshold are the same, and the second voltage threshold and the fourth voltage threshold are the same, then based on the battery temperature, it can be determined that the first or fourth condition is met. For example, if the battery temperature ≥ the fourth temperature threshold, then it is determined that the fourth condition is met. In another example, the temperature difference between the first region and the second region can be determined to determine whether the first or fourth condition is met.

[0108] In some embodiments of this disclosure, the fourth condition includes at least one of the following: charging current ≥ fourth current threshold, or discharging current ≥ fifth current threshold. In other words, if at least one of the above is satisfied, it indicates that the battery, in particular the electrodes, generates a large amount of heat and needs to be cooled. In this case, at least one of the first and second main tubes is controlled to cool the battery, and in this case the heat exchange parameters of the first and second main tubes are different.

[0109] Specifically, the first current threshold and the fourth current threshold may be the same or different, and the second current threshold and the fifth current threshold may be the same or different. If the first current threshold and the fourth current threshold are the same, and the second current threshold and the fifth current threshold are the same, then based on the battery temperature, it can be determined that the first or fourth condition is met. For example, if the battery temperature ≥ the fourth temperature threshold, then it is determined that the fourth condition is met. In another example, the temperature difference between the first region and the second region can be determined to determine whether the first or fourth condition is met.

[0110] In some embodiments of this disclosure, the first threshold is 100 kW. In other words, when the charging power ≥ 100 kW, the battery is in a high-power charging mode, for example, a fast charging mode or a supercharging mode. In this case, the battery generates a large amount of heat, and at least one of the first and second main tubes is controlled to cool the battery.

[0111] In some embodiments of the present disclosure, a third voltage threshold value of 500V or a fourth current threshold value of 200A / 250A indicates that the battery is in a high-power charging mode, such as a fast charging mode or a supercharging mode. In this case, the battery generates a large amount of heat, and at least one of the first and second main tubes is controlled to cool the battery.

[0112] In some embodiments of this disclosure, the range of the first threshold value is 20 kW to 180 kW, the range of the third voltage threshold value is 200 V to 750 V, and the range of the fourth current threshold value is 20 A to 250 A. In some examples of this disclosure, the above values ​​may be used for DC fast charging piles.

[0113] In some embodiments of this disclosure, the range of the first threshold value is 250kW to 600kW, the range of the third voltage threshold value is 200V to 1000V, and the range of the fourth current threshold value is 600A or greater. In some specific examples of this disclosure, the above values ​​may be used for a DC high-power supercharge pile. In some examples of this disclosure, the values ​​of the first threshold, the third voltage threshold, and the fourth current threshold may be within the ranges of combinations of 350kW (1000V~500A), 350kW (1000V~500A), 250kW (500V~631A), 100kW (500V~200A), and 180kW (1000V~250A). In this case, the fourth condition is determined to be met if at least one of the first threshold, the third voltage threshold, and the fourth current threshold is determined to be met first.

[0114] In some embodiments of this disclosure, the maximum value of the first threshold is 100 kW, the maximum value of the third voltage threshold is 600 V, and the value of the fourth current threshold is 170 A.

[0115] In some embodiments of this disclosure, the maximum value of the first threshold is 430 kW, the maximum value of the third voltage threshold is 800 V, and the value of the fourth current threshold is 550 A.

[0116] In some embodiments of this disclosure, the fourth condition includes at least one of the termination of battery self-heating or a region cooling command entered by the user. In other words, the user can directly decide whether to enter region cooling, without needing to detect temperature parameters, thereby reducing energy consumption. Furthermore, the user can enter a region cooling command through a terminal such as a mobile phone app or a driving computer. After the battery self-heating terminates due to significant heat generation at the electrodes, a temperature difference is created between the first and second regions, which causes the battery to enter controlled region cooling and improve the temperature uniformity of the battery.

[0117] In some embodiments of this disclosure, battery self-heating refers to heating the battery using the electrical energy of a charging pile, and the heating method is internal heating achieved by high-power rapid charging and discharging of the battery. The heating rate is fast and the heating efficiency is high. In this way, while the battery is outputting electrical energy, the electrical energy can be supplemented by the charging pile.

[0118] In some embodiments of the present disclosure, the control method further includes that when the fifth condition is met, at least one of the first and second main tubes heats the battery, and the heat exchange parameters of the first and second main tubes are different. In other words, when it is determined that the fifth condition is met, both the first and second main tubes can be controlled to heat the battery, and the flow rates and / or temperatures of the heat exchange medium in the first and second main tubes can be different, so that the heat exchange parameters of the first and second main tubes are different. Alternatively, when it is determined that the fifth condition is met, one of the first and second main tubes may be controlled to operate to heat the battery, while the other is controlled not to operate.

[0119] In some embodiments of this application, the heat exchange signal may include determining whether a fifth condition is met. Thus, if it is determined that the fifth condition is met, it can be determined that the heat exchange signal has been received, and at least one of the first or second main tube is controlled to heat the battery, in which case the heat exchange parameters of the first and second main tubes are different.

[0120] In some embodiments of the present disclosure, the heat exchange signal and the fifth condition are different signals. If the heat exchange signal is acquired and the fifth condition is not met, at least one of the first and second main pipes is controlled to first heat the battery. If the fifth condition is met, the heat exchange parameters of the first and second main pipes are controlled to be different, for example, the flow rates of the first and second main pipes may be controlled to be different.

[0121] In some embodiments of this disclosure, the fifth condition includes battery temperature ≤ fifth temperature threshold. Specifically, if it is determined that battery temperature ≤ fifth temperature threshold, it indicates that the battery temperature is low and that the battery needs to be heated. In this case, at least one of the first and second main tubes is controlled to heat the battery, and in this case the heat exchange parameters of the first and second main tubes are different. The battery temperature in "battery temperature ≤ fifth temperature threshold" may be the lowest temperature of the battery or the average temperature of the battery.

[0122] In some embodiments of this disclosure, a fifth temperature threshold < second temperature threshold. Specifically, if it is determined that the battery temperature ≤ the fifth temperature threshold, the battery enters region control. At least one of the first and second main tubes is controlled to heat the battery first, thereby different heat exchange parameters for the first and second main tubes. For example, the second main tube with a larger flow rate exchanges heat with the second region with a lower temperature, improving the heating effect of the second region and improving the temperature uniformity of the battery. If the battery temperature rises and it is determined that the battery temperature ≤ the second temperature threshold, region control is terminated, and at least one of the first and second main tubes is controlled to heat the battery.

[0123] In some embodiments of this disclosure, the fifth condition includes at least one of the following: battery charging power ≤ fourth threshold, or battery discharging power ≤ fifth threshold. It should be understood that battery temperature affects the battery's charging and discharging power. If it is determined that battery charging power ≤ fourth threshold, or battery discharging power ≤ fifth threshold, it indicates that the battery temperature is excessively low, and consequently, the charging or discharging power cannot be increased to meet the set requirements. In this case, at least one of the first or second main tubes is controlled to heat the battery, and the heat exchange parameters of the first and second main tubes are controlled to be different in order to increase the battery temperature.

[0124] Furthermore, the fifth threshold and the third power threshold may be the same or different. If the fifth threshold and the third power threshold are the same, it can be determined that the second or fifth condition is met based on the battery temperature. For example, if the battery temperature is less than or equal to the fifth temperature threshold, it is determined that the fifth condition is met. As another example, the temperature difference between the first and second regions can be determined to determine whether the second or fifth condition is met.

[0125] In some embodiments of this disclosure, the fifth condition includes at least one of the following: discharge voltage ≤ fifth voltage threshold or discharge current ≤ sixth current threshold. It should be understood that battery temperature affects the battery's discharge voltage and discharge current. If it is determined that discharge voltage ≤ fifth voltage threshold or discharge current ≤ sixth current threshold is true, it indicates that the battery temperature is excessively low, and consequently the discharge voltage and discharge current cannot be raised to meet the set requirements. In this case, at least one of the first or second main tubes is controlled to heat the battery, and the heat exchange parameters of the first and second main tubes are controlled to be different to raise the battery temperature.

[0126] The fifth voltage threshold and the third voltage threshold may be the same or different, and the sixth current threshold and the third current threshold may be the same or different. If the fifth voltage threshold and the third voltage threshold are the same, and the sixth current threshold and the third current threshold are the same, then based on the battery temperature, it can be determined that the second or fifth condition is met. For example, if the battery temperature ≤ the fifth temperature threshold, then it is determined that the fifth condition is met. As another example, the temperature difference between the first region and the second region may be determined to determine whether the second or fifth condition is met.

[0127] In some embodiments of the present disclosure, the fifth condition includes at least one of the following: charging voltage ≤ sixth voltage threshold, charging current ≤ seventh current threshold, or a user-inputted region heating command. Specifically, if it is determined that charging voltage ≤ sixth voltage threshold and charging current ≤ seventh current threshold, it indicates that the battery temperature is low, and consequently the charging voltage and charging current cannot be increased to meet the set requirements. In this case, at least one of the first or second main tubes is controlled to heat the battery, and the heat exchange parameters of the first and second main tubes are controlled to be different in order to raise the battery temperature.

[0128] In some embodiments of this disclosure, a first region is preferentially cooled such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery. Specifically, the temperature of the first region is higher, which necessitates preferential cooling of the first region, and the cooling rate of the first region is faster than the cooling rate of the second region, thereby improving the temperature uniformity of the battery. Furthermore, preferential cooling may refer to cooling the first region by using a heat exchange medium with a higher flow rate, or by using a heat exchange medium with a lower temperature.

[0129] In some embodiments of this disclosure, the first region is preferentially cooled when the sixth condition is met. In other words, in order to avoid wasting energy, it is necessary to determine whether the sixth condition is met in order to determine whether to preferentially cool the first region.

[0130] Furthermore, the sixth condition includes the difference between the temperature of the first region and the temperature of the second region ≥ the first temperature difference threshold, and the battery temperature ≥ the fourth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ the first rate difference threshold, and the battery temperature ≥ the fourth temperature threshold.

[0131] In some embodiments of this disclosure, preferential cooling of a first region includes the flow rate of the heat exchange medium in the first main tube being greater than the flow rate of the heat exchange medium in the second main tube. Thus, the first region can be cooled by using a higher flow rate of the heat exchange medium, improving the rate of temperature reduction in the first region and improving the temperature uniformity of the battery.

[0132] In some embodiments of this disclosure, the difference between the flow rate of the heat exchange medium in the first main pipe and the flow rate of the heat exchange medium in the second main pipe is greater than or equal to the first flow rate threshold. Therefore, a flow rate of the heat exchange medium bypassing the first main pipe is ensured, guaranteeing a preferential cooling effect in the first region and further improving the temperature uniformity of the battery.

[0133] In some embodiments of this disclosure, preferential cooling of the first region includes the temperature of the heat exchange medium at the inlet end of the first main pipe being lower than the temperature of the heat exchange medium at the inlet end of the second main pipe. Therefore, by using a heat exchange medium with a lower temperature, preferential cooling of the first region can be achieved, thereby ensuring a preferential cooling effect on the first region and further improving the temperature uniformity of the battery.

[0134] In some embodiments of the present disclosure, preferential cooling of the first region includes the pressure at the outlet end of the first main pipe being less than the pressure at the outlet end of the second main pipe. Thus, the flow resistance in the first main pipe can be less than the flow rate of the second main pipe, thereby increasing the flow rate of the heat exchange medium bypassing to the first main pipe, which ensures a preferential cooling effect on the first region and further improves the temperature uniformity of the battery.

[0135] In some embodiments of this disclosure, the second region is preferentially heated such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is the electrode region of the battery and the second region of the battery is the non-electrode region of the battery. In other words, in this case, the temperature of the first region is lower, so the second region is preferentially heated, and the heating rate of the second region is faster than that of the first region, thereby improving the temperature uniformity of the battery. Furthermore, preferential heating in this disclosure may refer to heating the second region by using a heat exchange medium with a larger flow rate, or by using a heat exchange medium with a higher temperature.

[0136] In some embodiments of this disclosure, the second region is preferentially heated when the seventh condition is met. In other words, in order to avoid wasting energy, it is necessary to determine whether the seventh condition is met in order to determine whether to preferentially heat the second region.

[0137] Furthermore, the seventh condition includes the difference between the temperature of the first region and the temperature of the second region ≥ the second temperature difference threshold, and the battery temperature ≤ the fifth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ the second rate difference threshold, and the battery temperature ≤ the fifth temperature threshold.

[0138] Furthermore, the second temperature difference threshold and the third temperature threshold may be the same or different. The second rate difference threshold and the first temperature rise threshold may be the same or different.

[0139] In some embodiments of this disclosure, controlling the heating of a second region preferentially includes the flow rate of the heat exchange medium in the second main tube being greater than the flow rate of the heat exchange medium in the first main tube. Thus, the second region is heated by using more heat exchange medium, improving the heating rate of the second region and improving the temperature uniformity of the battery.

[0140] Furthermore, the difference between the flow rate of the heat exchange medium in the second main pipe and the flow rate of the heat exchange medium in the first main pipe is greater than or equal to the second flow rate threshold. Therefore, it is ensured that the flow rate of the heat exchange medium bypassing the second main pipe is large, ensuring that the second region is heated by using more heat exchange medium, improving the heating rate of the second region and improving the temperature uniformity of the battery.

[0141] In some embodiments of this disclosure, controlling the heating of a second region preferentially includes ensuring that the temperature of the heat exchange medium at the inlet end of the second main tube is higher than the temperature of the heat exchange medium at the inlet end of the first main tube. Thus, the second region is heated by using a heat exchange medium with a higher temperature, improving the heating rate of the second region and improving the temperature uniformity of the battery.

[0142] Furthermore, the difference between the temperature of the heat exchange medium at the inlet end of the second main pipe and the temperature of the heat exchange medium at the inlet end of the first main pipe is greater than or equal to the sixth threshold. Therefore, it is ensured that the temperature of the heat exchange medium in the second main pipe becomes higher, and the second region can be heated by using a heat exchange medium with a higher temperature, thereby improving the heating rate of the second region and improving the temperature uniformity of the battery.

[0143] In some embodiments of the present disclosure, preferential heating of the second region includes the pressure at the outlet end of the second main pipe being greater than the pressure at the outlet end of the first main pipe. This extends the flow time of the heat exchange medium in the second main pipe, thereby improving the heating effect.

[0144] In some embodiments of the present disclosure, when the eighth condition is met, the first region stops being preferentially cooled and / or the second region stops being preferentially heated such that the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature increase of the first region of the battery is higher than the rate of temperature increase of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery. Thus, the energy consumption of the system is reduced.

[0145] Furthermore, the eighth condition is that the temperature difference between the first and second regions is less than the seventh threshold; or The temperature rise rates of the first region and the second region are the same; or This includes the fact that the difference in the rate of temperature rise between the first and second regions is less than the eighth threshold. In other words, if it is determined that one of the eighth conditions is met, it indicates that the temperature difference between the first and second regions is small and that region heat exchange control is not necessary. In this case, the battery is controlled to terminate region cooling or region heating control, reducing the system's energy consumption and ensuring temperature uniformity.

[0146] In some embodiments of this disclosure, the temperature rise rate of the first region is ≥ 2.5°C / min, or T H -T L If it is determined that =T0 and T0 ≥ 10℃, region control is enabled. If it is determined that the temperature rise rate of the first region is < 1℃ / min, or that T0 < 10℃, region control is terminated.

[0147] In some embodiments of the present disclosure, if the temperature rise rate of the first region is determined to be ≥ 2.5°C / min and the minimum temperature of the battery is > 10°C, the battery is controlled to enter region cooling control, and is controlled to preferentially cool the first region and to control the amount of heat exchange in the first main tube to be greater than the amount of heat exchange in the second main tube.

[0148] In some embodiments of the present disclosure, when it is determined that T0 ≥ 10°C and the minimum temperature of the battery > 10°C, the battery is controlled to enter regional cooling control, which is controlled to preferentially cool a first region and to control the amount of heat exchange in the first main tube to be greater than the amount of heat exchange in the second main tube.

[0149] In some embodiments of the present disclosure, when the temperature rise rate of the first region is determined to be ≥ 2.5°C / min and the minimum temperature of the battery is < 10°C, the battery is controlled to enter region heating control, and the second region is controlled to be heated preferentially, and the amount of heat exchange in the second main tube is controlled to be greater than the amount of heat exchange in the first main tube.

[0150] In some embodiments of the present disclosure, when it is determined that T0 ≥ 10°C and the minimum temperature of the battery < 10°C, the battery is controlled to enter regional heating control, and is controlled to preferentially heat a second region, and to control the amount of heat exchange in the second main tube to be greater than the amount of heat exchange in the first main tube.

[0151] In some embodiments of this disclosure, the maximum temperature of the battery is ≥ 40°C, T H -T L If it is determined that =T0 and T0 ≥ 10℃, region control is enabled. Maximum battery temperature < 40℃, T H -T L If it is determined that =T0 and T0 < 10℃, then the region control is terminated, and here T H This is the maximum battery temperature, T L This is the minimum battery temperature.

[0152] In some embodiments of this disclosure, the maximum temperature of the battery is ≥ 40°C, T H -T L If it is determined that =T0, T0≧10℃, and the minimum battery temperature >10℃, the battery is controlled to enter regional cooling control, and the first region is controlled to be cooled preferentially, and the heat exchange rate of the first main tube is controlled to be greater than the heat exchange rate of the second main tube.

[0153] Some embodiments of this disclosure have a maximum battery temperature ≤ -10°C, T H -T L If it is determined that =T0, T0≧10℃, and the minimum temperature of the battery is <10℃, the battery is controlled to enter regional heating control, and the second region is controlled to be heated preferentially, and the heat exchange rate of the second main tube is controlled to be greater than the heat exchange rate of the first main tube.

[0154] In some embodiments of the present disclosure, a first heat exchange unit 21 and a first electronic expansion valve 61 are located within a first main pipe 10a, the first electronic expansion valve 61 is located at a first end of the first heat exchange unit 21, and the opening of the first electronic expansion valve 61 is adjusted to adjust the heat exchange parameters of the first main pipe 10a.

[0155] A second heat exchange unit 22 and a second electronic expansion valve 62 are located within the second main pipe 10b, with the second electronic expansion valve 62 located at the first end of the second heat exchange unit 22, and the opening of the second electronic expansion valve 62 is adjusted to adjust the heat exchange parameters of the second main pipe. Thus, the flow rate and / or temperature of the refrigerant entering the first main pipe 10a and the second main pipe 10b can be adjusted via the first electronic expansion valve 61 and the second electronic expansion valve 62 to adjust the heat exchange parameters.

[0156] In some embodiments of the present disclosure, the first main pipe 10a further includes a fifth electronic expansion valve 65, the fifth electronic expansion valve located at the second end of the first heat exchange unit 21, and the opening of the fifth electronic expansion valve 65 is adjusted to adjust the heat exchange parameters of the first main pipe.

[0157] The second main pipe 10b further includes a sixth electronic expansion valve 66, which is located at the second end of the second heat exchange unit 22, and the opening of the sixth electronic expansion valve 66 is adjusted to adjust the heat exchange parameters of the second main pipe. Specifically, the flow rate and / or temperature of the refrigerant entering the first and second main pipes can be adjusted by adjusting the openings of the fifth electronic expansion valve 65 and the sixth electronic expansion valve 66 to adjust the heat exchange parameters.

[0158] Furthermore, the first electronic expansion valve 61 is positioned between the first heat exchange unit 21 and the external condenser 130, and the second electronic expansion valve 62 is positioned between the second heat exchange unit 22 and the external condenser 130. When the battery 300 needs to be cooled, the refrigerant flowing out of the external condenser 130 flows sequentially through the first electronic expansion valve 61, the first heat exchange unit 21, and the fifth electronic expansion valve 65, and the refrigerant flowing out of the external condenser 130 flows sequentially through the second electronic expansion valve 62, the second heat exchange unit 22, and the sixth electronic expansion valve 66. For this reason, the first electronic expansion valve 61, the fifth electronic expansion valve 65, the second electronic expansion valve 62, and the sixth electronic expansion valve 66 are provided, thereby allowing the first main pipe 10a and the second main pipe 10b to be adjusted independently. For example, the flow rate and / or temperature of the refrigerant in the first heat exchange unit 21 can be adjusted via the first electronic expansion valve 61 and the fifth electronic expansion valve 65, and the flow rate and / or temperature of the refrigerant in the second heat exchange unit 22 can be adjusted via the second electronic expansion valve 62 and the sixth electronic expansion valve 66, thereby independently adjusting the temperatures of the first and second regions, thereby achieving region control.

[0159] Furthermore, at least one opening among the first electronic expansion valve 61, the fifth electronic expansion valve 65, the second electronic expansion valve 62, and the sixth electronic expansion valve 66 is different, thereby resulting in different heat exchange rates between the first main pipe 10a and the second main pipe 10b. Specifically, when the temperature of the first region is higher than the temperature of the second region, or when the rate of temperature rise of the first region is higher than the rate of temperature rise of the second region, during cooling the heat exchange rate of the first main pipe 10a is greater than that of the second main pipe 10b, thereby allowing the first region to be cooled preferentially and achieving temperature uniformity of the battery 300. During heating the first main pipe 10a is less than that of the second main pipe 10b, thereby allowing the second region to be heated preferentially.

[0160] In some embodiments of the present disclosure, if the temperature of the first region is higher than the temperature of the second region, the temperature difference ≥ a first temperature difference threshold, and a cooling command is received, the opening of the first electronic expansion valve 61 is adjusted based on the degree of overheating ΔTA of the second end of the first heat exchange unit 21, and the opening of the second electronic expansion valve 62 is reduced at set intervals. Note that the cooling command may be an operational command issued by the user, or it may be a command issued by the system when it detects that the battery 300 needs to be cooled, for example, when it detects that the maximum temperature of the battery 300 is higher than a first set temperature.

[0161] Specifically, the opening of the first electronic expansion valve 61 is adjusted based on the degree of superheating ΔTA at the second end of the first heat exchange unit 21 to ensure that the flow rate and / or temperature of the refrigerant in the first heat exchange unit 21 meets the cooling requirements of the first region, and the amount of refrigerant in the second heat exchange unit 22 can be reduced by reducing the opening of the second electronic expansion valve 62 at set intervals, thereby avoiding overcooling of the second region, and thereby achieving different heat exchange amounts in the first main pipe 10a and the second main pipe 10b, and achieving temperature uniformity of the battery 300.

[0162] Furthermore, if ΔTA < ΔTC, the opening of the first electronic expansion valve 61 is reduced; if ΔTA > ΔTD, the opening of the first electronic expansion valve 61 is increased; or if ΔTD ≤ ΔTA ≤ ΔTC, the first electronic expansion valve 61 maintains its current opening. In this way, it can be ensured that the refrigerant flow rate and / or temperature in the first heat exchange unit 21 satisfies / satisfies the cooling effect of the first region, and supercooling of the first region can be avoided. It should be noted that the values ​​of ΔTC and ΔTD can be defined according to the actual situation.

[0163] In some embodiments of the present disclosure, the opening of the second electronic expansion valve 62 is reduced at set intervals until it is detected that the temperature difference between the first region and the second region is less than a first threshold, and the opening of the second electronic expansion valve 62 is then adjusted again based on the degree of superheating ΔTB of the second end of the second heat exchange unit 22.

[0164] Specifically, if ΔTB < ΔTC2, the opening of the second electronic expansion valve 62 is reduced; if ΔTB > ΔTD2, the opening of the second electronic expansion valve 62 is increased; or if ΔTD2 ≤ ΔTB ≤ ΔTC2, the second electronic expansion valve 62 maintains its current opening. Note that the values ​​of ΔTC2 and ΔTD2 can be defined according to the actual situation.

[0165] In some embodiments of the present disclosure, a first sensor 31 is positioned between a fifth electronic expansion valve 65 and a first heat exchange unit 21, a second sensor 32 is positioned between the first electronic expansion valve 61 and a first heat exchange unit 21, a third sensor 33 is positioned between a sixth electronic expansion valve 66 and a second heat exchange unit 22, and a fourth sensor 34 is positioned between a second electronic expansion valve 62 and a second heat exchange unit 22, thereby enabling the degree of superheating at the second end of the first main pipe 10a to be calculated based on the pressure / temperature detected by the first sensor 31, and the degree of superheating at the second end of the second main pipe 10b to be calculated based on the pressure / temperature detected by the third sensor 33.

[0166] In some embodiments of the present disclosure, when the temperature of the first region is higher than the temperature of the second region, the temperature difference ≥ the first temperature difference threshold, and a cooling command is received, the openings of the fifth electronic expansion valve 65 and the sixth electronic expansion valve 66 are at their maximum value, thereby reducing the flow resistance of the first main pipe 10a and the second main pipe 10b and ensuring a cooling effect.

[0167] In some embodiments of this disclosure, if the temperature of the first region is higher than the temperature of the second region, the temperature difference < first temperature difference threshold, and a cooling command is received, the opening of the first electronic expansion valve 61 is adjusted based on the degree of superheating ΔTA of the second end of the first heat exchange unit 21, the opening of the second electronic expansion valve 62 is adjusted based on the degree of superheating ΔTB of the second end of the second heat exchange unit 22, and the openings of the fifth electronic expansion valve 65 and the sixth electronic expansion valve 66 are at their maximum values. Thus, a cooling effect can be ensured.

[0168] If ΔTA < ΔTC1, the opening of the first electronic expansion valve 61 is reduced; if ΔTA > ΔTD1, the opening of the first electronic expansion valve 61 is increased; or if ΔTD1 ≤ ΔTA ≤ ΔTC1, the first electronic expansion valve 61 maintains its current opening. Note that the values ​​of ΔTC1 and ΔTD1 can be defined according to the actual situation.

[0169] If ΔTB < ΔTC2, the opening of the second electronic expansion valve 62 is reduced; if ΔTB > ΔTD2, the opening of the second electronic expansion valve 62 is increased; or if ΔTD2 ≤ ΔTB ≤ ΔTC2, the second electronic expansion valve 62 maintains its current opening. Note that the values ​​of ΔTC2 and ΔTD2 can be defined according to the actual situation.

[0170] In some embodiments of the present disclosure, when the temperature of the first region is higher than the temperature of the second region, the temperature difference ≥ the second temperature difference threshold, and a heating command is received, the opening of the sixth electronic expansion valve 66 is at its maximum value, and the opening of the fifth electronic expansion valve 65 is reduced at set intervals. Thus, the heat exchange rates of the second main pipe 10b and the first main pipe 10a may be different, the refrigerant temperature in the second main pipe 10b may be higher than the refrigerant temperature in the first main pipe 10a, and / or the refrigerant flow rate in the second main pipe 10b may be greater than the refrigerant flow rate in the first main pipe 10a, thereby preferentially heating the second region and achieving temperature uniformity of the battery 300.

[0171] Furthermore, after the opening of the fifth electronic expansion valve 65 is reduced at set intervals until the temperature difference falls below the second threshold, the opening of the fifth electronic expansion valve 65 stops being reduced.

[0172] It should be noted that the heating command may be an operation command issued by the user, or it may be a command issued by the system when it detects that the battery 300 needs to be heated, for example, when it detects that the minimum temperature of the battery 300 is higher than a second set temperature.

[0173] In some embodiments of this disclosure, when the temperature of the first region is higher than the temperature of the second region, the temperature difference ≥ the second temperature difference threshold, and a heating command is received, the opening of the first electronic expansion valve 61 is adjusted based on the degree of subcooling ΔT1 of the first end of the first heat exchange unit 21, and the opening of the second electronic expansion valve 62 is adjusted based on the degree of subcooling ΔT2 of the first end of the second heat exchange unit 22. Thus, the amount of heat exchanged between the first heat exchange unit 21 and the second heat exchange unit 22 can be adjusted in real time, thereby ensuring temperature uniformity of the battery 300.

[0174] Furthermore, if ΔT1 < ΔT3, the opening of the first electronic expansion valve 61 is reduced; if ΔTA > ΔT4, the opening of the first electronic expansion valve 61 is increased; or if ΔT4 ≤ ΔTA ≤ ΔT3, the first electronic expansion valve 61 maintains its current opening.

[0175] If ΔT2 < ΔT5, the opening of the second electronic expansion valve 62 is reduced; if ΔT2 > ΔT6, the opening of the second electronic expansion valve 62 is increased; and if ΔT6 ≤ ΔT2 ≤ ΔT5, the second electronic expansion valve 62 maintains its current opening. Thus, the temperature uniformity of the battery 300 can be further ensured. It should be noted that T3, T4, T5, and T6 can be set according to the actual situation.

[0176] In some embodiments of the present disclosure, when the temperature of the first region is higher than the temperature of the second region, the temperature difference is less than a second temperature difference threshold, and a heating command is received, the openings of the fifth electronic expansion valve 65 and the sixth electronic expansion valve 66 are at their maximum values, the opening of the first electronic expansion valve 61 is adjusted based on the degree of subcooling ΔT1 of the first end of the first heat exchange unit 21, and the opening of the second electronic expansion valve 62 is adjusted based on the degree of subcooling ΔT2 of the first end of the second heat exchange unit 22. Thus, the amount of heat exchanged between the first heat exchange unit 21 and the second heat exchange unit 22 can be adjusted in real time, thereby ensuring temperature uniformity of the battery 300.

[0177] Furthermore, if ΔT1 < ΔT7, the opening of the first electronic expansion valve 61 is reduced; if ΔTA > ΔT8, the opening of the first electronic expansion valve 61 is increased; or if ΔT8 ≤ ΔTA ≤ ΔT7, the first electronic expansion valve 61 maintains its current opening.

[0178] If ΔT2 < ΔT9, the opening of the second electronic expansion valve 62 is reduced; if ΔT2 > ΔT10, the opening of the second electronic expansion valve 62 is increased; and if ΔT10 ≤ ΔT2 ≤ ΔT9, the second electronic expansion valve 62 maintains its current opening. Thus, temperature uniformity of the battery 300 can be further ensured. It should be noted that T7, T8, T9, and T10 can be set according to the actual situation.

[0179] Furthermore, the degree of supercooling ΔT1 of the first main pipe 10a is calculated based on the pressure detected by the first sensor 31 and the temperature detected by the second sensor 32. The degree of supercooling ΔT2 of the second main pipe 10b is calculated based on the pressure detected by the third sensor 33 and the temperature detected by the fourth sensor 34, thereby enabling the acquisition of real-time supercooling values.

[0180] The following describes a thermal management system 100 according to an embodiment of the present disclosure with reference to Figures 1 and 2.

[0181] According to one embodiment of the present disclosure, a thermal management system 100 is provided which includes a battery heat exchange module and a controller. The battery heat exchange module includes a first main pipe 10a and a second main pipe 10b. A first heat exchange assembly 21 is located in the first main pipe 10a, and a second heat exchange assembly 22 is located in the second main pipe 10b, and the first heat exchange assembly 21 and the second heat exchange assembly 22 are configured to exchange heat with a battery.

[0182] The thermal management system 100 described herein is applicable to a vehicle. The vehicle may be a petroleum-fueled vehicle, a gas-fueled vehicle, a new energy vehicle, or a railway vehicle. The new energy vehicle may be a battery electric vehicle, a hybrid electric vehicle, a range-extender EV (range-extended vehicle), etc. The battery heat exchange module in the thermal management system 100 is configured to exchange heat with the vehicle's battery. The battery may be configured to supply electricity to the vehicle. For example, the battery may be used as a power source for operating the vehicle, or the battery may be used as a power source for driving the vehicle, providing driving force to the vehicle as a substitute for, or partially a substitute for, fuel, natural gas, etc., or the battery may be configured to supply power to certain components of the vehicle, such as a motor, so that the battery can be used for at least one operating power consumption requirement, such as starting the vehicle, navigation, or driving.

[0183] The first heat exchange assembly 21 and the second heat exchange assembly 22 exchange heat with the battery to regulate its temperature, thereby ensuring that the battery has an appropriate operating temperature and that the battery operates stably and reliably. For example, in winter when ambient temperatures are low, the battery may be heated to increase the battery's starting speed. As another example, in summer when ambient temperatures are excessively high, or when the battery's operating temperature is high, the battery may be cooled, improving the battery's operational safety and extending its operating life.

[0184] The thermal management system 100 in this disclosure further includes a controller. The controller is configured to control at least one of the first main pipe 10a and the second main pipe 10b to exchange heat based on the temperature of the battery. The first heat exchange assembly 21 is located in the first main pipe 10a, and the second heat exchange assembly 22 is located in the second main pipe 10b. Thus, the controller can control either the first heat exchange assembly 21 or the second heat exchange assembly 22 to exchange heat with the battery. The working fluid circulating in the first main pipe 10a and the second main pipe 10b may be the same or different. The working fluid may be water, a liquid working fluid other than water, or another fluid capable of undergoing a phase change, such as carbon dioxide or a refrigerant. For example, a liquid working fluid may circulate in the first main pipe 10a, and a fluid capable of undergoing a phase change may circulate in the second main pipe 10b. For example, the first main pipe 10a is connected to a high-pressure cooling system or an engine cooling system for the circulation of coolant in the high-pressure cooling system or engine cooling system, and the second main pipe 10b is connected to an air conditioning system for the circulation of a medium that causes a phase change within the air conditioning system.

[0185] The controller may control the first heat exchange assembly 21 for heat exchange with the battery, or the controller may control the second heat exchange assembly 22 for heat exchange with the battery, or the controller may control both the first heat exchange assembly 21 and the second heat exchange assembly 22 for heat exchange with the battery. The above examples may be selected depending on the actual requirements of the battery.

[0186] For example, referring to Figure 5, which is a schematic diagram of one embodiment of a battery pack according to the present disclosure. The battery pack includes a battery, a first heat exchange assembly 21, and a second heat exchange assembly 22. The battery is positioned between the first heat exchange assembly 21 and the second heat exchange assembly 22. The first heat exchange assembly 21 is positioned on one side (upper side) of the battery, and the second heat exchange assembly 22 is positioned on the other side (lower side) of the battery. The first heat exchange assembly is the upper cover of the battery, and the second heat exchange assembly is the base plate of the battery. If the battery requires a large amount of heat exchange, the first main tube 10a and the second main tube 10b may exchange heat simultaneously. If the battery requires a small amount of heat exchange, either the first main tube 10a or the second main tube 10b may exchange heat. The first heat exchange assembly 21 is positioned on one side of the battery, and the second heat exchange assembly 22 is positioned on the other side of the battery. If the heat generated on one side of the battery exceeds the battery's normal operating temperature, the controller controls the heat exchange assembly corresponding to that side to cool the battery.

[0187] If the battery requires a large amount of heat exchange, the first main pipe 10a and the second main pipe 10b may exchange heat simultaneously. If the battery requires a small amount of heat exchange, only one of the first main pipe 10a and the second main pipe 10b may exchange heat. The first heat exchange assembly 21 is located on one side of the battery, and the second heat exchange assembly 22 is located on the other side of the battery. If the heat generated on one side of the battery is higher than the normal operating temperature of the battery, the controller controls the heat exchange assembly corresponding to that side to cool the battery.

[0188] The first heat exchange assembly 21 and the second heat exchange assembly 22 are independent assemblies and can function independently of each other, and the first and second main tubes have different heat exchange modes. When the first and second heat exchange assemblies 21 and 22 are located in different areas of the battery, the heat exchange effects of the first and second heat exchange assemblies 21 and 22 may be reversed. For example, the first heat exchange assembly 21 may heat the battery while the second heat exchange assembly 22 cools it, thereby equalizing the battery temperature. The thermal management modes of the battery heat exchange module include heating or cooling by both the first and second main tubes, as well as heating by one of the first and second main tubes and cooling by the other. Different thermal management modes are selected to adapt to different temperatures in different areas of the battery, thereby equalizing the battery temperature.

[0189] For example, referring to Figures 3 and 4, Figure 3 is a schematic diagram of a first implementation embodiment of the battery core according to the present disclosure, and Figure 4 is a schematic diagram of a second implementation embodiment of the battery core according to the present disclosure. The battery includes a plurality of battery cores. The plurality of battery cores are arranged within the battery. Electrodes are located at two ends of the battery core 301, or electrodes are located at one end of the battery core 301. During operation of the battery core 301, the electrodes generate a large amount of heat. The area near the electrodes is the electrode heating area, and the area away from the electrodes is the non-electrode heating area. Generally, when the battery 300 is operating, the electrodes generate a large amount of heat, so that the temperature in the area near the electrodes is higher than the temperature in the area away from the electrodes. On one or both sides of the battery, a first heat exchange assembly 21 is provided corresponding to the electrode heating temperature area 301b, and a second heat exchange assembly 22 is located in the non-electrode heating temperature area 301a of the battery. If the temperature of the electrode heating temperature region 301b is higher than the operating temperature of the battery, the first heat exchange assembly 21 cools the electrode heating temperature region 301b. If the temperature of the non-electrode heating temperature region 301a of the battery is lower than the operating temperature of the battery, the second heat exchange assembly 22 heats the non-electrode heating temperature region 301a of the battery.

[0190] For example, under certain operating conditions, the efficiency of heat exchange with the battery using only the first heat exchange assembly 21 or the second heat exchange assembly 22 may be lower than the efficiency of heat exchange with the battery when both the first and second heat exchange assemblies 21 and 22 are used together. In addition, the heat exchange efficiencies of the first and second heat exchange units for the battery may also differ. Therefore, by arranging the controller, the first heat exchange assembly 21, the second heat exchange assembly 22, or a combination of the first and second heat exchange assemblies 21 and 22 can exchange heat with the battery, and the battery heat exchange module can exchange heat with the battery at different efficiencies. Based on the battery temperature, the battery heat exchange module can exchange heat with the battery at an appropriate efficiency, thereby reducing the energy consumption of the thermal management system 100 and improving the functionality of the thermal management system 100.

[0191] According to the thermal management system 100 in the embodiments of this disclosure, a first heat exchange assembly 21 and a second heat exchange assembly 22 are provided, and a controller is provided to control at least one of the first heat exchange assembly 21 and the second heat exchange assembly 22 to exchange heat with the battery, thereby causing the battery heat exchange module to exchange heat with the battery at different efficiencies or in different thermal management modes. Based on the battery temperature, the controller controls the battery heat exchange module to exchange heat with the battery at appropriate efficiencies or in different thermal management modes, thereby reducing the energy consumption of the thermal management system 100 and improving the functionality of the thermal management system 100.

[0192] In some embodiments of the present disclosure, the working fluid circulates both within the first main pipe 10a and the second main pipe 10b, and the working fluid is configured to exchange heat with the battery in the first heat exchange assembly 21 and the second heat exchange assembly 22 to heat or cool the battery.

[0193] In some embodiments of the present disclosure, the thermal management system 100 further includes an air conditioning circulation loop 101, the air conditioning circulation loop 101 includes a heating branch line, a first main pipe 10a connected in parallel with the heating branch line, a second main pipe 10b connected in parallel with the heating branch line, and a controller configured to control at least one of the heating branch line, the first main pipe 10a, and the second main pipe 10b for heat exchange.

[0194] The thermal management system 100 further includes an air conditioning circulation loop 101, which is configured to exchange heat with the occupant compartment. For example, to improve user comfort, the air conditioning circulation loop 101 can heat the occupant compartment in winter when the ambient temperature is low, and the air conditioning circulation loop 101 can cool the occupant compartment in summer when the ambient temperature is excessively high. Optionally, a working fluid circulates within the air conditioning circulation loop 101, and the working fluid exchanges heat within a heating branch to heat or cool the occupant compartment.

[0195] The heating branch of the air conditioning circulation loop 101 is configured to exchange heat with the crew compartment and heat the crew compartment. The heating branch is connected in parallel with the first main pipe 10a and the second main pipe 10b, and the heating branch, the first main pipe 10a, and the second main pipe 10b all operate independently of each other, so that the heating of the crew compartment and the heat exchange with the battery do not conflict with each other.

[0196] The controller may control the heating branch for heat exchange on its own, or the controller may control the first heat exchange assembly 21 in the first main pipe 10a for heat exchange on its own, or the controller may control the second heat exchange assembly 22 in the second main pipe 10b for heat exchange on its own. Furthermore, the controller may control the heating branch, the first main pipe 10a, and the second main pipe 10b to heat each other in cooperation. Furthermore, the controller may control the heating branch, the first main pipe 10a, and the second main pipe 10b to exchange heat simultaneously. The controller may control the heating branch to heat the crew compartment while controlling the battery heat exchange module to heat the battery, or the controller may further control the heating branch to heat the crew compartment while controlling the battery heat exchange module to cool the battery.

[0197] In some embodiments of this disclosure, the air conditioning circulation loop 101 includes a cooling branch line. A first main pipe 10a is connected in parallel with the cooling branch line, and a second main pipe 10b is connected in parallel with the cooling branch line. A controller is configured to control at least one of the cooling branch line, the first main pipe 10a, and the second main pipe 10b for heat exchange. The cooling branch line includes an evaporator 140 and a third electronic expansion valve 63. The third electronic expansion valve 63 is located between the external condenser 130 and the evaporator 140. The cooling branch line further includes a third one-way valve 43. The third one-way valve 43 is located between the evaporator 140 and the compressor 11.

[0198] The cooling branch of the air conditioning circulation loop 101 is configured to exchange heat with the crew compartment and cool the crew compartment. The cooling branch is connected in parallel with the first main pipe 10a and the second main pipe 10b, and the cooling branch, the first main pipe 10a, and the second main pipe 10b all operate independently of each other, so that the cooling of the crew compartment and the heat exchange with the battery do not conflict with each other.

[0199] The controller may control the cooling branch for heat exchange on its own, or the controller may control the first heat exchange assembly 21 in the first main pipe 10a for heat exchange on its own, or the controller may control the second heat exchange assembly 22 in the second main pipe 10b for heat exchange on its own. Furthermore, the controller may control the cooling branch, the first main pipe 10a, and the second main pipe 10b to exchange heat simultaneously. The controller may control the cooling branch to cool the crew compartment while controlling the battery heat exchange module to heat the battery, or the controller may further control the cooling branch to cool the crew compartment while controlling the battery heat exchange module to cool the battery.

[0200] In some embodiments of the present disclosure, the air conditioning circulation loop 101 includes a cooling branch and a heating branch. A first main pipe 10a is connected in parallel with the cooling branch, and a second main pipe 10b is connected in parallel with the cooling branch. A first main pipe 10a is connected in parallel with the heating branch, and a second main pipe 10b is connected in parallel with the heating branch. The controller is configured to control at least one of the heating branch, the cooling branch, the first main pipe 10a, and the second main pipe 10b for heat exchange.

[0201] The thermal management system 100 further includes an air conditioning circulation loop 101, which is configured to exchange heat with the occupant compartment. For example, to improve user comfort, the air conditioning circulation loop 101 can heat the occupant compartment in winter when the ambient temperature is low, and can cool the occupant compartment in summer when the ambient temperature is excessively high. The air conditioning circulation loop 101 includes a cooling branch and a heating branch. The cooling branch of the air conditioning circulation loop 101 is configured to cool the occupant compartment by exchanging heat with it, and the heating branch of the air conditioning circulation loop 101 is configured to cool the occupant compartment by exchanging heat with it. Optionally, a working fluid circulates within the air conditioning circulation loop 101, specifically within the heating branch and the cooling branch to heat or cool the occupant compartment.

[0202] The cooling branch is connected in parallel to the first main pipe 10a and the second main pipe 10b, and the heating branch is connected in parallel to the first main pipe 10a and the second main pipe 10b. Therefore, the cooling branch, heating branch, the first main pipe 10a, and the second main pipe 10b all operate independently of each other, so that heat exchange with the crew compartment and heat exchange with the battery do not conflict with each other.

[0203] The controller may control a heating branch for heat exchange on its own, or a cooling branch for heat exchange on its own, or a first heat exchange assembly 21 in a first main pipe 10a for heat exchange on its own, or a second heat exchange assembly 22 in a second main pipe 10b for heat exchange on its own.

[0204] Furthermore, the controller may control any combination of the cooling branch, heating branch, first main pipe 10a, and second main pipe 10b to simultaneously exchange heat. The controller may control the cooling branch to cool the crew compartment while controlling the battery heat exchange module to heat the battery, or the controller may further control the cooling branch to cool the crew compartment while controlling the battery heat exchange module to cool the battery. The controller may control the heating branch to heat the crew compartment while controlling the battery heat exchange module to heat the battery, or the controller may further control the heating branch to heat the crew compartment while controlling the battery heat exchange module to cool the battery. The controller may control the cooling branch to cool the crew compartment while controlling the cooling branch to heat the crew compartment, and the controller may further control the battery unit to exchange heat for the battery while controlling the cooling branch to heat the crew compartment.

[0205] The heating and cooling branch lines of the air conditioning circulation loop 101 are connected in parallel to the first main pipe 10a and the second main pipe 10b, respectively, and operate independently of each other. If control valves are provided, the thermal management system 100 can be controlled to perform different functions, and these different functions can be executed synchronously. In this way, the thermal management system 100 has stronger functionality and improved operating efficiency.

[0206] In some embodiments of the present disclosure, the thermal management system 100 further includes a storage device. The storage device is connected between the exhaust of the compressor 11 and the intake of the compressor 11.

[0207] When the compressor 11 operates, the working fluid flows in through the compressor's intake port. The low-temperature, low-pressure gaseous working fluid is compressed by the compressor 11 and becomes a high-temperature, high-pressure gaseous working fluid, which flows out from the compressor 11's exhaust. After heat exchange, the working fluid returns to the compressor 11, completing one cycle.

[0208] The storage device is connected between the exhaust and intake ports of the compressor 11 and is configured to store and discharge the working medium. It should be understood that the working medium has different phases when performing heat exchange for heating and cooling, and that for the same mass, the volume of gaseous working medium is larger than that of liquid working medium, resulting in different amounts of working medium required during heating and cooling. The storage device is provided to store and discharge the working medium, thereby allowing the amount of working medium to be replenished or reduced based on the battery temperature.

[0209] It should be understood that liquid working fluids are more convenient to store. Therefore, in some embodiments of this disclosure, a storage device is configured to allow the working fluid to release heat and liquefy within the storage device, and the storage device can store the liquid working fluid. The storage device is connected between the exhaust and intake of the compressor 11. The storage device can liquefy the working fluid flowing out from the exhaust of the compressor 11 and store the working fluid inside the storage device.

[0210] In some embodiments of the present disclosure, the controller may control the storage device to replenish the working fluid in the first main tube 10a and / or the second main tube 10b based on the battery temperature, and the controller may control the storage device to replenish or reduce the working fluid in the first main tube 10a and / or the second main tube 10b based on the battery temperature.

[0211] The phase of the working medium when it heats the battery is different from the phase of the working medium when it cools the battery, and for the same mass, the volume of gaseous working medium is larger than the volume of liquid working medium. Therefore, the amount of working medium required when the battery is heated is greater than the amount of working medium required when the battery is cooled. When the battery heat exchange module heats the battery, the controller controls the storage device to discharge the stored working medium and replenish it in the first main pipe 10a and / or the second main pipe 10b in order to meet the amount of working medium required to heat the battery. When the battery heat exchange module cools the battery, the memory stores the working medium flowing through the storage device, reducing the amount of working medium in the first main pipe 10a and / or the second main pipe 10b in order to meet the amount of working medium required to cool the battery.

[0212] In some specific embodiments of this disclosure, the storage device is configured as a receiver dryer, which is configured to store and discharge a liquid working medium. The receiver dryer can further remove moisture and impurities from the working medium to avoid damaging and clogging the working medium piping and to extend the service life of the working medium piping, thereby allowing the working medium to flow smoothly.

[0213] In some embodiments of the present disclosure, the air conditioning circulation loop 101 includes a compressor 11, a first heat exchanger 12, and a second heat exchanger 13. The compressor 11 includes an intake and an exhaust port, and the exhaust port of the compressor 11, the first heat exchanger 12, the second heat exchanger 13, and the intake port of the compressor 11 are connected in sequence.

[0214] When the air conditioning circulation loop 101 is operating, the working fluid flows in from the intake port of the compressor 11. The low-temperature, low-pressure gaseous working fluid is compressed by the compressor 11 and then flows out from the exhaust port of the compressor 11 as a high-temperature, high-pressure gaseous working fluid. The first port of the first heat exchanger 12 is connected to the exhaust port of the compressor 11, the second port of the first heat exchanger 12 is connected to the second heat exchanger 13, and the second heat exchanger 13 is connected to the intake port of the compressor 11. Thus, the working fluid flows out of the compressor 11, flows through the first heat exchanger 12, then through the second heat exchanger 13, performs other heat exchanges, and finally returns to the compressor 11, forming a working fluid loop and completing one cycle.

[0215] The heating branch line includes a first heat exchanger 12, with a first main pipe 10a connected in parallel with the first heat exchanger 12 and a second main pipe 10b connected in parallel with the first heat exchanger 12. The controller is configured to control the exhaust from the compressor 11 to communicate with at least one of the first heat exchanger 12, the first main pipe 10a, and the second main pipe 10b, thereby achieving heat exchange with at least one of the first heat exchanger 12, the first main pipe 10a, and the second main pipe 10b.

[0216] The heating branch is connected in parallel to the first main pipe 10a, and the heating branch is connected in parallel to the second main pipe 10b. The first heat exchanger 12 on the heating branch, the first heat exchange assembly 21 on the first main pipe 10a, and the second heat exchange assembly 22 on the second main pipe 10b are all connected in parallel to each other, and the first heat exchanger 12, the first heat exchange assembly 21, and the second heat exchange assembly 22 all operate independently of each other.

[0217] The exhaust from the compressor 11 is selectively connected to at least one of the heated branch passage, the first main pipe 10a, and the second main pipe 10b, and the working fluid flowing out from the exhaust of the compressor 11 is a high-temperature, high-pressure gaseous working fluid. Therefore, when the exhaust from the compressor 11 is connected to one of the heated branch passage, the first main pipe 10a, and the second main pipe 10b, one of the heated branch passage, the first main pipe 10a, and the second main pipe 10b generates heat.

[0218] The controller may control the exhaust from the compressor 11 to communicate with the heating branch to enable heat exchange in the first heat exchanger 12. The controller may further control the exhaust from the compressor 11 to communicate with the first main pipe 10a to enable heat exchange in the first heat exchange assembly 21. The controller may further control the exhaust from the compressor 11 to communicate with the second main pipe 10b to enable heat exchange in the second heat exchange assembly 22. The controller may further control the exhaust from the compressor 11 to communicate simultaneously with any two or more of the heating branch, the first main pipe 10a, and the second main pipe 10b to enable heat exchange in the first heat exchanger 12, the first heat exchange assembly 21, or the second heat exchange assembly 22. Optionally, the controller may control the first heat exchanger 12 to heat the crew compartment while controlling the battery heat exchange module to heat the battery.

[0219] In some embodiments of the present disclosure, the air conditioning circulation loop 101 includes a compressor 11, a second heat exchanger 13, and a third heat exchanger 14. The compressor 11 includes an intake and an exhaust port, and the exhaust port of the compressor 11, the second heat exchanger 13, the third heat exchanger 14, and the intake port of the compressor 11 are connected in sequence.

[0220] The cooling branch line includes a third heat exchanger 14, with the first main pipe 10a connected in parallel with the third heat exchanger 14 and the second main pipe 10b connected in parallel with the third heat exchanger 14. The controller is configured to control the second heat exchanger 13 to communicate with at least one of the third heat exchanger 14, the first main pipe 10a, and the second main pipe 10b, thereby enabling heat exchange with at least one of the third heat exchanger 14, the first main pipe 10a, and the second main pipe 10b.

[0221] When the air conditioning circulation loop 101 is operating, the working fluid flows in from the intake port of the compressor 11. The low-temperature, low-pressure gaseous working fluid is compressed by the compressor 11 and then flows out from the exhaust port of the compressor 11 as a high-temperature, high-pressure gaseous working fluid. The first port of the second heat exchanger 13 is connected to the exhaust port of the compressor 11, the second port of the second heat exchanger 13 is connected to the third heat exchanger 14, and the third heat exchanger 14 is connected to the intake port of the compressor 11. Therefore, the working fluid flows out of the compressor 11, flows through the second heat exchanger 13, and then flows through the third heat exchanger 14. The working fluid releases heat and liquefies in the second heat exchanger 13, is then subjected to throttling and depressurization treatment, then enters the third heat exchanger 14, absorbs heat and vaporizes, and is cooled in the third heat exchanger 14. The gaseous working fluid eventually returns to the compressor 11, forming a working fluid loop and completing one cycle.

[0222] The cooling branch is connected in parallel to the first main pipe 10a, and the cooling branch is connected in parallel to the second main pipe 10b. The third heat exchanger 14 on the cooling branch, the first heat exchange assembly 21 on the first main pipe 10a, and the second heat exchange assembly 22 on the second main pipe 10b are all connected in parallel to each other, and the third heat exchanger 14, the first heat exchange assembly 21, and the second heat exchange assembly 22 all operate independently of each other.

[0223] The controller may control the second heat exchanger 13 to communicate with the cooling branch line in order to enable heat exchange in the third heat exchanger 14. The controller may further control the second heat exchanger 13 to communicate with the first main pipe 10a in order to enable heat exchange in the first heat exchange assembly 21. The controller may further control the second heat exchanger 13 to communicate with the second main pipe 10b in order to enable heat exchange in the second heat exchange assembly 22. The controller may further control the second heat exchanger 13 to communicate simultaneously with any two or more of the cooling branch line, the first main pipe 10a, and the second main pipe 10b in order to enable heat exchange in the third heat exchanger 14, the first heat exchange assembly 21, or the second heat exchange assembly 22. Optionally, the controller may control the third heat exchanger 14 to cool the crew compartment while controlling the battery heat exchange module to cool the battery.

[0224] In some embodiments of the present disclosure, the heat pump air conditioning circulation loop 101 includes a compressor 11, a first heat exchanger 12, a second heat exchanger 13, and a third heat exchanger 14. The compressor 11 includes an intake and an exhaust port, and the exhaust port of the compressor 11, the first heat exchanger 12, the second heat exchanger 13, the third heat exchanger 14, and the intake port of the compressor 11 are connected in sequence.

[0225] When the air conditioning circulation loop 101 is operating, the working fluid flows in from the intake port of the compressor 11. The low-temperature, low-pressure gaseous working fluid is compressed by the compressor 11 and then flows out from the exhaust port of the compressor 11 as a high-temperature, high-pressure gaseous working fluid. The first port of the first heat exchanger 12 is connected to the exhaust port of the compressor 11, the second port of the first heat exchanger 12 is connected to the first port of the second heat exchanger 13, the second port of the second heat exchanger 13 is connected to the first port of the third heat exchanger 14, and the second port of the third heat exchanger 14 is connected to the intake port of the compressor 11. Thus, the working fluid flows out of the compressor 11, through the first heat exchanger 12, through the second heat exchanger 13, then through the third heat exchanger 14, and finally back to the compressor 11, forming a working fluid loop and completing one cycle. The working fluid exchanges heat with at least one of the first heat exchanger 12, the second heat exchanger 13, and the third heat exchanger 14, and then returns to the intake port of the compressor 11 as a gaseous working fluid.

[0226] The heating branch includes a first heat exchanger 12, and the cooling branch includes a third heat exchanger 14. The first main pipe 10a is connected in parallel with the first heat exchanger 12, the second main pipe 10b is connected in parallel with the first heat exchanger 12, the first main pipe 10a is connected in parallel with the third heat exchanger 14, and the second main pipe 10b is connected in parallel with the third heat exchanger 14. The second heat exchanger 13 may be located in the heating branch, or alternatively, the second heat exchanger 13 may be located in the cooling branch. Alternatively, the second heat exchanger 13 may be used only as piping through which the working fluid passes. In the second heat exchanger 13, the working fluid neither absorbs nor releases heat, which can be selected according to the actual requirements.

[0227] The heating branch is connected in parallel to the first main pipe 10a, and the heating branch is connected in parallel to the second main pipe 10b. The first heat exchanger 12 on the heating branch, the first heat exchange assembly 21 on the first main pipe 10a, and the second heat exchange assembly 22 on the second main pipe 10b are all connected in parallel to each other, and the first heat exchanger 12, the first heat exchange assembly 21, and the second heat exchange assembly 22 all operate independently of each other. The cooling branch is connected in parallel to the first main pipe 10a, and the cooling branch is connected in parallel to the second main pipe 10b. The third heat exchanger 14 on the cooling branch line, the first heat exchange assembly 21 on the first main pipe 10a, and the second heat exchange assembly 22 on the second main pipe 10b are all connected in parallel to each other, and the third heat exchanger 14, the first heat exchange assembly 21, and the second heat exchange assembly 22 all operate independently of each other.

[0228] Since the heating branch is connected in parallel with the first main pipe 10a and the heating branch is connected in parallel with the second main pipe 10b, the exhaust from the compressor 11 is selectively connected to at least one of the heating branch, the first main pipe 10a, and the second main pipe 10b in order to exchange heat with at least one of them. Specifically, the working fluid flowing out of the exhaust from the compressor 11 is a high-temperature, high-pressure gaseous working fluid. Therefore, when the exhaust from the compressor 11 is connected to one of the heating branch, the first main pipe 10a, and the second main pipe 10b, at least one of the heating branch, the first main pipe 10a, and the second main pipe 10b generates heat.

[0229] Since the cooling branch is connected in parallel with the first main pipe 10a and the cooling branch is connected in parallel with the second main pipe 10b, the intake port of the compressor 11 is selectively connected to at least one of the cooling branch, the first main pipe 10a, and the second main pipe 10b. Similarly, the second heat exchanger 13 connected to the other side of the third heat exchanger 14 is also selectively connected to at least one of the cooling branch, the first main pipe 10a, and the second main pipe 10b, and exchanges heat with at least one of the cooling branch, the first main pipe 10a, and the second main pipe 10b. Optionally, at least one of the cooling branch, the first main pipe 10a, and the second main pipe 10b performs cooling.

[0230] The controller is configured to control the exhaust from the compressor 11 to communicate with at least one of the first heat exchanger 12, the first main pipe 10a, and the second main pipe 10b, thereby achieving heat exchange with at least one of the first heat exchanger 12, the first main pipe 10a, and the second main pipe 10b.

[0231] The controller may control the exhaust from the compressor 11 to communicate with the heating branch to enable heat exchange in the first heat exchanger 12. The controller may further control the exhaust from the compressor 11 to communicate with the first main pipe 10a to enable heat exchange in the first heat exchange assembly 21. The controller may further control the exhaust from the compressor 11 to communicate with the second main pipe 10b to enable heat exchange in the second heat exchange assembly 22. The controller may further control the exhaust from the compressor 11 to communicate simultaneously with any two or more of the heating branch, the first main pipe 10a, and the second main pipe 10b to enable heat exchange in the first heat exchanger 12, the first heat exchange assembly 21, or the second heat exchange assembly 22. Optionally, the controller may control the first heat exchanger 12 to heat the crew compartment while controlling the battery heat exchange module to heat the battery.

[0232] Alternatively, the controller is configured to control communication between the second heat exchanger 13 and at least one of the first main pipe 10a, the second main pipe 10b, and the third heat exchanger 14, thereby enabling heat exchange with at least one of the first main pipe 10a, the second main pipe 10b, and the third heat exchanger 14.

[0233] The controller may control the second heat exchanger 13 to communicate with the cooling branch line in order to enable heat exchange in the third heat exchanger 14. The controller may further control the second heat exchanger 13 to communicate with the first main pipe 10a in order to enable heat exchange in the first heat exchange assembly 21. The controller may further control the second heat exchanger 13 to communicate with the second main pipe 10b in order to enable heat exchange in the second heat exchange assembly 22. The controller may further control the second heat exchanger 13 to communicate simultaneously with any two or more of the heating branch line, the first main pipe 10a, and the second main pipe 10b in order to enable heat exchange in the third heat exchanger 14, the first heat exchange assembly 21, or the second heat exchange assembly 22. Optionally, the controller may control the third heat exchanger 14 to cool the crew compartment while controlling the battery heat exchange module to cool the battery. Optionally, the controller may control the battery heat exchange module to heat the battery while simultaneously controlling the first heat exchanger 12 to cool the crew compartment.

[0234] In some embodiments of this disclosure, the first heat exchanger 12 is an on-board condenser 120, which is configured to heat the passenger compartment. As the working fluid flows through the working fluid loop jointly formed by the compressor 11 and the on-board condenser 120, the high-temperature, high-pressure gaseous working fluid flowing out of the exhaust of the compressor 11 undergoes heat exchange in the on-board condenser 120, releasing heat and liquefying. The working fluid is then subjected to throttling and depressurization, absorbing heat and vaporizing, until finally the working fluid becomes a low-temperature, low-pressure gaseous working fluid flowing in from the intake of the compressor 11, completing one cycle. Alternatively, the on-board condenser 120 may simply function as piping, with the working fluid flowing through the on-board condenser 120 without heat exchange.

[0235] In some specific embodiments of this disclosure, in a working fluid loop jointly formed by a compressor 11, an onboard condenser 120, and a second heat exchanger 13, a high-temperature, high-pressure gaseous working fluid flowing from the exhaust of the compressor 11 undergoes heat exchange in the onboard condenser 120, causing the working fluid to release heat and liquefy. The onboard condenser 120 is configured to heat the passenger compartment.

[0236] The controller may control the exhaust from the compressor 11 to selectively communicate with at least one of the onboard condenser 120, the first heat exchange assembly 21, and the second heat exchange assembly 22. The controller is also provided to alter the flow path of the working fluid in the air conditioning circulation loop 101, thereby allowing the occupant compartment and / or the battery to be heated.

[0237] It should be understood that the air conditioning circulation loop 101 as a whole has multiple branching paths, and the working medium loop formed jointly by the compressor 11, the first heat exchanger 12, the second heat exchanger 13, etc., is all part of the air conditioning circulation loop 101.

[0238] In some embodiments of this disclosure, the second heat exchanger 13 is an external condenser 130. The working fluid releases heat as it passes through the external condenser 130, and the external condenser 130 can generate heat. For example, in winter when ambient temperatures are low, the components of a vehicle need to be preheated before starting. The external condenser 130 generates heat on the components so that the starting speed of the vehicle can be increased. Alternatively, the external condenser 130 may simply function as piping, and the working fluid flows through the external condenser 130 without heat exchange.

[0239] In some embodiments of the present disclosure, the third heat exchanger 14 is an evaporator 140, which is configured to cool the crew compartment.

[0240] As the working fluid flows through the working fluid loop jointly formed by the compressor 11 and the evaporator 140, the high-temperature, high-pressure gaseous working fluid flowing out from the exhaust of the compressor 11 undergoes heat exchange within the pipeline, releasing heat and liquefying. Subsequently, the working fluid is throttled and depressurized before entering the evaporator 140, where it absorbs heat and vaporizes, cooling the evaporator 140. The working fluid ultimately becomes a low-temperature, low-pressure gaseous working fluid flowing in from the intake of the compressor 11, completing one cycle.

[0241] In some specific embodiments of this disclosure, in a working fluid loop jointly formed by a compressor 11, a second heat exchanger 13, and an evaporator 140, a high-temperature, high-pressure gaseous working fluid flowing from the exhaust of the compressor 11 undergoes heat exchange in the second heat exchanger 13, releasing heat and liquefying. The working fluid is then throttled and depressurized and flows into the evaporator 140, where it absorbs heat and vaporizes, configured to cool the crew compartment. The working fluid then becomes a low-temperature, low-pressure gaseous working fluid and flows into the intake of the compressor 11, completing one cycle.

[0242] The controller may control the second heat exchanger 13 to selectively communicate with at least one of the evaporator 140, the first heat exchange assembly 21, and the second heat exchange assembly 22. The controller is provided to alter the flow path of the working fluid in the air conditioning circulation loop 101, thereby allowing the crew compartment to be cooled and / or the battery to be cooled.

[0243] In some specific embodiments of this disclosure, in a working fluid loop jointly formed by a compressor 11, an on-board condenser 120, an off-board condenser 130, and an evaporator 140, the high-temperature, high-pressure gaseous working fluid flowing from the exhaust of the compressor 11 undergoes heat exchange in the on-board condenser 120, releasing heat and liquefying. The on-board condenser 120 is configured to heat the passenger compartment. Alternatively, the on-board condenser 120 may simply be used as a passage, and the working fluid flows through the on-board condenser 120 without heat exchange. The working fluid then continues to flow to the off-board condenser 130, where it can undergo heat exchange to release heat a second time. Alternatively, the working fluid simply passes through the off-board condenser 130 without heat exchange. After releasing heat, the liquefied working fluid is throttled and depressurized and flows into the evaporator 140, where it absorbs heat and vaporizes, configured to cool the passenger compartment. Next, the working fluid becomes a low-temperature, low-pressure gaseous working fluid and flows into the intake port of the compressor 11, completing one cycle.

[0244] The controller may control the exhaust from the compressor 11 to selectively communicate with at least one of the onboard condenser 120, the first heat exchange assembly 21, and the second heat exchange assembly 22. In addition, the controller may further control the second heat exchanger 13 to selectively communicate with at least one of the evaporator 140, the first heat exchange assembly 21, and the second heat exchange assembly 22. The controller is provided to change the flow path of the working fluid in the air conditioning circulation loop 101, thereby enabling the thermal management system 100 to operate under different operating conditions, and the thermal management system 100 in this disclosure has robust functionality.

[0245] When the controller controls the exhaust of the compressor 11 to communicate with the on-board condenser 120, the controller controls the external condenser 130 to communicate with the evaporator 140, and the controller controls the exhaust of the compressor 11 not to communicate with the first main pipe 10a and the second main pipe 10b, the working fluid passes through the on-board condenser 120 without heat exchange, the working fluid releases heat as it passes through the external condenser 130, and the working fluid absorbs heat as it passes through the evaporator 140, thereby enabling the thermal management system 100 to achieve operating conditions for independently cooling the occupant compartment.

[0246] If the controller controls the exhaust of the compressor 11 to communicate with the on-board condenser 120, the controller controls the external condenser 130 to communicate with the first main pipe 10a and the second main pipe 10b, the controller controls the exhaust of the compressor 11 not to communicate with the first main pipe 10a and the second main pipe 10b, and the external condenser 130 not to communicate with the evaporator 140, then the working fluid passes through the on-board condenser 120 without heat exchange, the working fluid releases heat as it passes through the external condenser 130, and the working fluid absorbs heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, thereby enabling the thermal management system 100 to achieve the operating conditions for cooling the battery.

[0247] If the controller controls the exhaust of the compressor 11 to communicate with the on-board condenser 120, the controller controls the external condenser 130 to communicate with the first main pipe 10a and the second main pipe 10b, the external condenser 130 is in communication with the evaporator 140, and the controller controls the exhaust of the compressor 11 not to communicate with the first main pipe 10a and the second main pipe 10b, the working fluid passes through the on-board condenser 120 without heat exchange, the working fluid releases heat as it passes through the external condenser 130, the working fluid absorbs heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, and the working fluid absorbs heat as it passes through the evaporator 140, thereby enabling the thermal management system 100 to achieve operating conditions that cool the occupant's compartment while cooling the battery.

[0248] When the controller controls the exhaust of the compressor 11 to communicate with the onboard condenser 120, and the controller controls the exhaust of the compressor 11 not to communicate with the first main pipe 10a and the second main pipe 10b, the working fluid releases heat as it passes through the onboard condenser 120, thereby enabling the thermal management system 100 to achieve the operating conditions for heating the occupant's compartment.

[0249] When the controller controls the exhaust of the compressor 11 to communicate with the first main pipe 10a and the second main pipe 10b, and the controller controls the exhaust of the compressor 11 not to communicate with the onboard condenser 120, the working fluid releases heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, thereby enabling the thermal management system 100 to achieve the operating conditions for heating the battery.

[0250] When the controller controls the exhaust of the compressor 11 to communicate with the on-board condenser 120, and the controller controls the exhaust of the compressor 11 to communicate with the first main pipe 10a and the second main pipe 10b, the working fluid releases heat as it passes through the on-board condenser 120, and the working fluid releases heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, thereby enabling the thermal management system 100 to achieve operating conditions that simultaneously heat the occupant compartment and the battery.

[0251] In some embodiments of the present disclosure, the thermal management system 100 includes a first exhaust passage 10c. A battery heat exchange module is connected to an intake port via the first exhaust passage 10c, and the working fluid flowing through the battery heat exchange module can flow back to the intake port via the first exhaust passage 10c. For example, when the battery is cooled, the working fluid releases heat in the external condenser 130, flows out through the exhaust, absorbs heat in the battery heat exchange module, and then returns to the intake port through the first exhaust passage 10c.

[0252] The thermal management system 100 further includes a second exhaust passage 10d connected to the exhaust. The second exhaust passage 10d is connected to the first exhaust passage 10c. Thus, the battery heat exchange module is connected to the exhaust via the second exhaust passage 10d, and the working fluid can flow to the battery heat exchange module via the second exhaust passage 10d. For example, when the battery is heated, the working fluid flows out of the exhaust, through the second exhaust passage to the battery heat exchange module, and releases heat in the battery heat exchange module.

[0253] The thermal management system 100 further includes a third exhaust passage 10e that connects exhaust to the on-board condenser 120. The working fluid flows through the third exhaust passage 10e to the external condenser 130, and heat is released in the on-board condenser 120.

[0254] In some embodiments of the present disclosure, the controller includes a group of control valves which operate to allow exhaust gas to communicate with at least one of the onboard condenser 120 and the battery heat exchange module, thereby allowing working fluid from the exhaust gas to flow into the onboard condenser 120 or the battery heat exchange module. The group of control valves is provided to control the direction of flow of the working fluid and to control the operation of the thermal management system 100.

[0255] In some specific embodiments of this disclosure, the control valve group includes a first on-off valve 51, a second on-off valve 52, and a third on-off valve 53. The first on-off valve 51 is connected in series with the second exhaust passage 10d, and the third on-off valve 53 is connected between the external condenser 130 and the exhaust, in other words, the third on-off valve 53 is connected in series with the third exhaust passage 10e. The second on-off valve 52 is connected in series with the first exhaust passage 10c, and when the second on-off valve 52 is closed, it prevents the working medium from the second exhaust passage 10d from flowing to the return intake.

[0256] The first on-off valve 51 controls the opening and closing of the second exhaust passage 10d, and can control whether the working fluid flows from the exhaust to the battery heat exchange module. When the first on-off valve 51 is off, the working fluid is prevented from flowing to the battery heat exchange module. The third on-off valve 53 controls the opening and closing of the third exhaust passage, and can control whether the working fluid flows from the exhaust to the external condenser 130. When the third on-off valve 53 is closed, the working fluid is prevented from flowing to the external condenser 130.

[0257] The first exhaust passage 10c is connected to the return intake port, the second exhaust passage 10d is connected to the exhaust, and the second exhaust passage 10d is connected to the first exhaust passage 10c. When the first on-off valve 51 is controlled to open the second exhaust passage 10d, the working fluid that has flowed out from the exhaust flows from the second exhaust passage 10d to the first exhaust passage 10c, and then flows directly back to the return intake port. Therefore, the second on-off valve 52 is located in the first exhaust passage 10c and can control the opening and closing of the first exhaust passage 10c, thereby preventing the working fluid from the second exhaust passage 10d from flowing to the intake port when the second on-off valve 52 is off.

[0258] In some embodiments of the present disclosure, a fourth electronic expansion valve 64 is further included, which is connected in parallel with the third on-off valve 53.

[0259] In some embodiments of the present disclosure, the thermal management system 100 further includes a first switching valve 41 and a second switching valve 42. The first switching valve 41 is connected in series between a second end of the battery heat exchange module and a third heat exchanger 14, and the second switching valve 42 is connected in series between a second end of the battery heat exchange module and a second heat exchanger 13. The first switching valve 41 may control the opening and closing of the battery heat exchange module and the third heat exchanger 14, and the second switching valve 42 may control the opening and closing of the battery heat exchange module and the second heat exchanger 13. When either the first switching valve 41 or the second switching valve 42 is opened, the first main pipe 10a is connected in parallel with the first heat exchanger 12, the second main pipe 10b is connected in parallel with the first heat exchanger 12, the first main pipe 10a is connected in parallel with the third heat exchanger 14, and the second main pipe 10b is connected in parallel with the third heat exchanger 14.

[0260] In certain embodiments of this disclosure, the first switching valve 41 is configured as a first one-way valve 41, which is configured to allow the working fluid to flow from the battery heat exchange module to the third heat exchanger 14. The first one-way valve 41 controls the working fluid to flow stably from the battery heat exchange module to the third heat exchanger 14, thereby improving the flexibility of the working fluid, avoiding backflow of the working fluid, and improving the operational stability of the thermal management system 100. In addition, the first one-way valve 41 can operate stably and continuously, thereby reducing the need for active control. This facilitates operation and control.

[0261] In certain embodiments of this disclosure, the second switching valve 42 is configured as a second one-way valve 42, which is configured to allow the working fluid to flow from the second heat exchanger 13 to the battery heat exchange module. The second one-way valve 42 controls the working fluid to flow stably from the second heat exchanger 13 to the battery heat exchange module, improving the flexibility of the working fluid, avoiding backflow of the working fluid, and improving the operational stability of the thermal management system 100. In addition, the second one-way valve 42 can operate stably and continuously, thereby reducing the need for active control. This facilitates operation and control.

[0262] In some embodiments of the present disclosure, a first sensor 31 and a second sensor 32 are located within a first main pipe 10a, with the first sensor 31 located at a first end of a first heat exchange assembly 21 and the second sensor 32 located at a second end of the first heat exchange assembly 21. A third sensor 33 and a fourth sensor 34 are further located within a second main pipe 10b, with the third sensor 33 located at a first end of a second heat exchange assembly 22 and the fourth sensor 34 located at a second end of the second heat exchange assembly 22.

[0263] Sensors are provided to intuitively and accurately obtain various values ​​of the working fluid in the first main pipe 10a and various values ​​of the working fluid in the second main pipe 10b. The controller can control the flow of the working fluid in the first main pipe 10a and the second main pipe 10b based on the battery temperature. This not only facilitates operation but also allows the battery to quickly reach the appropriate operating temperature, thereby improving the operational stability of the battery.

[0264] In some specific embodiments of this disclosure, the first sensor 31 is configured as a pressure sensor and can acquire the pressure of the working medium in the first main pipe 10a. The second sensor 32 is configured as a temperature sensor and can acquire the temperature of the working medium in the first main pipe 10a. The third sensor 33 is configured as a pressure sensor and can acquire the pressure of the working medium in the second main pipe 10b. The fourth sensor 34 is configured as a temperature sensor and can acquire the temperature of the working medium in the second main pipe 10b.

[0265] In some embodiments of this disclosure, a first sensor 31, a second sensor 32, and a first flow rate control element are located within a first main pipe 10a. The first sensor 31 is located at the first end of the first heat exchange assembly 21, the first flow rate control element is located at the second end of the first heat exchange assembly 21, and the second sensor 32 is located between the second end of the first heat exchange assembly 21 and the first flow rate control element. A third sensor 33, a fourth sensor 34, and a second flow rate control element are further located within a second main pipe 10b. The third sensor 33 is located at the first end of the second heat exchange assembly 22, the second flow rate control element is located at the second end of the second heat exchange assembly 22, and the fourth sensor 34 is located between the second end of the second heat exchange assembly 22 and the second flow rate control element.

[0266] In some specific embodiments of this disclosure, the first sensor 31 is configured as a pressure sensor and can acquire the pressure of the working medium in the first main pipe 10a. The second sensor 32 is configured as a temperature sensor and can acquire the temperature of the working medium in the first main pipe 10a. The third sensor 33 is configured as a pressure sensor and can acquire the pressure of the working medium in the second main pipe 10b. The fourth sensor 34 is configured as a temperature sensor and can acquire the temperature of the working medium in the second main pipe 10b.

[0267] The first flow rate adjustment element can adjust the flow rate of the working medium in the first main pipe 10a, thereby adjusting the pressure in the first main pipe 10a to achieve throttling and pressure reduction functions. The third flow rate adjustment element can adjust the flow rate of the working medium in the second main pipe 10b, thereby adjusting the pressure in the second main pipe 10b to achieve throttling and pressure reduction functions. In this way, the pressure of the working medium in the first main pipe 10a and the second main pipe 10b is kept within a safe range, preventing the working medium in the first main pipe 10a and the second main pipe 10b from becoming excessively high enough to puncture the piping and damage the battery, thereby improving the operational stability of the battery.

[0268] As the working fluid flows through the working fluid loop jointly formed by the compressor 11, the on-board condenser 120, the external condenser 130, and the battery heat exchange module, the working fluid releases heat in the on-board condenser 120 or the external condenser 130, and is then throttled and depressurized through the first and / or second flow control element to become a low-temperature, low-pressure liquid working fluid. After evaporating and absorbing heat in the battery heat exchange module, the working fluid becomes a low-temperature, low-pressure gaseous working fluid, which flows into the compressor 11 from the intake port, completing one cycle.

[0269] In some embodiments of the present disclosure, the heat exchange element further includes a third switching valve and a fourth switching valve, the third switching valve being located in a first main pipe 10a and the fourth switching valve being located in a second main pipe 10b.

[0270] The third switching valve can control the opening and closing of the first main pipe 10a, and the fourth switching valve can control the opening and closing of the second main pipe 10b, thereby controlling the flow or stagnation of the working medium in the first main pipe 10a or the second main pipe 10b. The third and fourth switching valves operate independently of each other.

[0271] When the third switching valve is opened, the first main pipe 10a is connected in parallel with the third heat exchanger 14, and the first main pipe 10a is selectively connected in parallel with the first heat exchanger 12. When the fourth switching valve is opened, the second main pipe 10b is connected in parallel with the third heat exchanger 14, and the second main pipe 10b is selectively connected in parallel with the first heat exchanger 12.

[0272] In some specific embodiments of this disclosure, a first electronic expansion valve 61 is located in a first main pipe 10a, and a second electronic expansion valve 62 is located in a second main pipe 10b. A first sensor 31 is located at the first end of the first heat exchange assembly 21, the first electronic expansion valve 61 is located at the second end of the first heat exchange assembly 21, and a second sensor 32 is located between the second end of the first heat exchange assembly 21 and the first electronic expansion valve 61. A third sensor 33 is located at the first end of the second heat exchange assembly 22, the second electronic expansion valve 62 is located at the second end of the second heat exchange assembly 22, and a fourth sensor 34 is located between the second end of the second heat exchange assembly 22 and the second electronic expansion valve 62.

[0273] The electronic expansion valve has a flow control function and can reduce the pressure of the working fluid flowing inside it. The electronic expansion valve also has an opening and closing function and can further selectively block the piping to control the flow or stagnation of the working fluid in the piping in which the electronic expansion valve is installed. Therefore, when the first electronic expansion valve 61 is installed in the first main pipe 10a, the first flow control element and the third switching valve can be eliminated, and similarly, when the second electronic expansion valve 62 is installed in the second main pipe 10b, the second flow control element and the fourth switching valve can be eliminated, thereby reducing the number of elements and alleviating the difficulty of installation.

[0274] In some specific embodiments of the present disclosure, a fifth switching valve is located at the first end of the evaporator 140 and is connected in series between the evaporator 140 and the intake port of the compressor 11. The fifth switching valve controls the opening and closing of the piping in which the evaporator 140 is located. When the fifth switching valve is open, the working fluid can flow through the evaporator 140 to the compressor 11.

[0275] In certain embodiments of this disclosure, the fifth switching valve is configured as a third one-way valve 43, which is configured to allow the working fluid to flow from the evaporator 140 to the compressor 11. The third one-way valve 43 controls the stable flow of the working fluid from the evaporator 140 to the compressor 11, improving the flexibility of the working fluid, preventing backflow of the working fluid, and improving the operational stability of the thermal management system 100. In addition, the third one-way valve 43 can operate stably and continuously, thereby reducing the need for active control. This facilitates operation and control.

[0276] In some specific embodiments of this disclosure, a third electronic expansion valve 63 is located at the second end of the evaporator 140, and the third electronic expansion valve 63 is connected in series between the external condenser 130 and the evaporator 140. The electronic expansion valve has a flow control function, and the third electronic expansion valve 63 can reduce the pressure of the working medium flowing inside it. The electronic expansion valve further has an opening and closing function, and can further selectively block piping to control whether the working medium flows into the evaporator 140.

[0277] As the working fluid flows through the working fluid loop formed jointly by the compressor 11, the on-board condenser 120, the external condenser 130, and the evaporator 140, the working fluid releases heat in the on-board condenser 120 or the external condenser 130, and is then throttled and depressurized through the third electronic expansion valve 63 to become a low-temperature, low-pressure liquid working fluid. After evaporating and absorbing heat in the evaporator 140, the working fluid becomes a low-temperature, low-pressure gaseous working fluid, which flows into the compressor 11 from the intake port, completing one cycle.

[0278] In some embodiments of the present disclosure, the thermal management system 100 further includes a bypass passage 10f, a fourth on-off valve 54 connected in series to the bypass passage 10f, the bypass passage 10f being connected in parallel to a fifth on-off valve, an evaporator 140, and a third electronic expansion valve 63, all connected in series. The fourth on-off valve 54 can control the flow and blockage of the bypass passage 10f. When the fourth on-off valve 54 opens the bypass passage 10f, the working fluid returns to the intake port through the bypass passage 10f. When the fourth on-off valve 54 blocks the bypass passage 10f, the working fluid returns to the intake port through the passage in which the evaporator 140 is located.

[0279] In some specific embodiments of the present disclosure, a fifth switching valve 55 is located at the first end of the external condenser 130, and the fifth switching valve 55 is connected in series between the external condenser 130 and the exhaust of the compressor 11. When the fifth switching valve is opened, the working fluid can flow into the external condenser 130.

[0280] In some specific embodiments of the present disclosure, a fourth one-way valve 44 is disposed at the second end of an external condenser 130. The fourth one-way valve 44 is configured to allow the working medium to flow out from the external condenser 130, which improves the flow flexibility of the working medium and prevents backflow of the working medium.

[0281] In some embodiments of the present disclosure, the thermal management system 100 further includes a sixth on-off valve 56, and the sixth on-off valve 56 is disposed on a side of the first switching valve 41 away from the battery heat exchange module. When the sixth switching valve 56 is opened, the working medium can flow from the battery heat exchange module to the evaporator 140.

[0282] In some embodiments of the present disclosure, the thermal management system 100 further includes a fifth one-way valve 45. The fifth one-way valve 45 is disposed between the battery heat exchange module and the air intake of the compressor 11. The fifth one-way valve 45 is configured to allow the working medium to flow from the battery heat exchange module to the air intake of the compressor 11, and prevent the working medium flowing to the air intake from flowing into the heat exchange assembly, thereby improving the use safety of the heat exchange assembly.

[0283] In some embodiments of the present disclosure, the thermal management system 100 further includes a gas-liquid separator 15, and the gas-liquid separator 15 is in communication with the air intake of the compressor 11. After being throttled and evaporated, the working medium becomes a low-temperature and low-pressure gaseous working medium. Since it cannot be completely ensured that all of the working medium becomes gaseous working medium through evaporation and heat absorption, the working medium needs to flow into the gas-liquid separator 15 before flowing into the compressor 11 again. The gas-liquid separator 15 separates the gaseous working medium and the liquid working medium, and drives only the low-temperature low-pressure gaseous working medium to flow into the compressor 11, so as to prevent the liquid hammering of liquid droplets on the functional components inside the compressor 11, and ensure the safe and normal operation of the compressor 11.

[0284] In some embodiments of the present disclosure, the thermal management system 100 further includes a series branch passage 10g. One end of the series branch passage 10g is connected to the first main pipe 10a, and the other end of the series branch passage 10g is connected to the second main pipe 10b. The controller is further configured to, based on the temperature of the battery, control the series branch passage 10g to connect the first main pipe 10a in series with the second main pipe 10b, whereby the first main pipe 10a and the second main pipe 10b perform heat exchange simultaneously.

[0285] In some specific embodiments of the present disclosure, the first interface of the first heat exchange assembly 21 is connected to the second interface of the second heat exchange assembly 22 via the series branch passage 10g. The working medium flows into the second interface of the first heat exchange assembly 21, then flows through the first heat exchange assembly 21, then flows into the second heat exchange assembly 22 through the series branch passage 10g, and finally flows out from the first interface of the second heat exchange assembly 22.

[0286] In some embodiments of the present disclosure, the series branch passage 10g includes a series switching valve 57, and the first interface of the first heat exchange assembly 21 is connected to the second interface of the second heat exchange assembly 22 via the series switching valve 57. The series switching valve 57 can control the opening and closing of the series branch passage 10g. When the series switching valve 57 blocks the series branch passage 10g, the first main pipe 10a and the second main pipe 10b are connected in parallel. When the series switching valve 57 connects the series branch passage 10g, the first main pipe 10a and the second main pipe 10b can be connected in series.

[0287] In some embodiments of this disclosure, the first sensor 31 is located between one end of the series branch 10g and the first interface of the first heat exchange assembly 21, and the third sensor 33 is located between the other end of the series branch 10g and the second interface of the second heat exchange assembly 22. When the first heat exchange assembly 21 and the second heat exchange assembly 22 are connected in series, the first sensor 31, the second sensor 32, the third sensor 33, and the fourth sensor 34 can all detect information about the working fluid.

[0288] In some embodiments of the present disclosure, the thermal management system 100 further includes a parallel switching valve 58. The parallel switching valve 58 is located on one side of the first interface of the first heat exchange assembly 21 and the first interface of the second heat exchange assembly 22. The parallel switching valve 58 can control the opening and closing of the first main pipe 10a and the second main pipe 10b. When the parallel switching valve 58 is opened, the first main pipe 10a and the second main pipe 10b can be connected in parallel.

[0289] In some embodiments of this disclosure, a first heat exchange assembly 21 is located on one side of the battery, and a second heat exchange assembly 22 is located on the other side of the battery, thereby improving the heat exchange efficiency of the battery by performing heat exchange on different sides of the battery.

[0290] In some specific embodiments of the present disclosure, the first heat exchange assembly 21 is a first heat exchange plate, and the second heat exchange assembly 22 is a second heat exchange plate, with the first and second heat exchange plates positioned on two opposing sides of the battery. Compared to a design in which only one heat exchange plate is provided, the first and second heat exchange plates can cool or heat two opposing sides of the battery, thereby improving the cooling or heating efficiency of the battery, allowing the battery to reach an appropriate operating temperature more quickly, and improving the operational stability of the battery.

[0291] In some embodiments of the present disclosure, at least one of the first heat exchange assembly 21 and the second heat exchange assembly 22 includes a plurality of heat exchange assemblies, with several heat exchange assemblies connected in parallel. Several heat exchange assemblies are provided to increase the area for heat exchange with the battery, thereby further improving the heat exchange efficiency to the battery.

[0292] In some embodiments of the present disclosure, one heat exchange assembly is located in the electrode heating region of the battery, and another heat exchange assembly is located in the non-electrode heating region of the battery.

[0293] The controller can control the cooling of heat exchange assemblies located in the electrode heating regions of the battery to a greater extent, and heat exchange assemblies located in the non-electrode heating regions of the battery to a lesser extent, based on the battery temperature. Alternatively, the controller can control the cooling of heat exchange assemblies located in the electrode heating regions of the battery and heat assemblies located in the non-electrode heating regions of the battery, based on the battery temperature.

[0294] The following describes one embodiment in which the thermal management system 100 operates under different operating conditions, with reference to Figure 1.

[0295] Embodiment 1 shows operating conditions in which only the occupant's cabin is cooled.

[0296] Under operating conditions where only the occupant compartment is cooled, the working fluid flows through a working fluid loop formed by the compressor 11, the on-board condenser 120, the off-board condenser 130, and the evaporator 140. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 opens the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 opens the piping, and the sixth on-off valve 56 blocks the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 block the piping, the third electronic expansion valve 63 opens the piping for throttling, and the fourth electronic expansion valve 64 blocks the piping.

[0297] The circulation path of the working fluid flows out from the compressor 11 in order, passing through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the third on-off valve 53, the fifth on-off valve 55, the external condenser 130, the fourth one-way valve 44, the third electronic expansion valve 63, the evaporator 140, the third one-way valve 43, the fifth sensor 35, and the gas-liquid separator 15, before finally returning to the compressor 11.

[0298] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 functions simply as piping, and the working fluid continues to flow to the external condenser 130. The working fluid liquefies and releases heat in the external condenser 130. After being throttled and depressurized through the third electronic expansion valve 63, the working fluid flows to the evaporator 140. In the evaporator 140, the working fluid absorbs heat and vaporizes, finally becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the evaporator 140 achieves cooling of the occupant's compartment.

[0299] Embodiment 2 describes operating conditions in which only the battery is cooled and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate independently. The first heat exchange assembly 21 operates, and the second heat exchange assembly 22 does not operate.

[0300] Under operating conditions where only the battery is cooled, the working fluid flows through a working fluid loop formed by the compressor 11, the on-board condenser 120, the off-board condenser 130, and the first heat exchange assembly 21. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 opens the first exhaust passage 10c, the third on-off valve 53 opens the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 opens the piping, and the sixth on-off valve 56 blocks the piping. The first electronic expansion valve 61 opens the piping for throttling, the second electronic expansion valve 62 blocks the piping, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 blocks the piping. The parallel switching valve 58 opens the piping, and the series switching valve 57 blocks the series branch passage 10g.

[0301] The circulation path of the working fluid flows out from the compressor 11 in order, through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the third on-off valve 53, the fifth on-off valve 55, the external condenser 130, the fourth one-way valve 44, and the second one-way valve 42 to the first branch line. The working fluid also flows through the first electronic expansion valve 61, the second sensor 32, the first heat exchange assembly 21, the first sensor 31, the parallel switching valve 58, the second on-off valve 52, the fifth one-way valve 45, and the gas-liquid separator 15 to the first branch line, and finally returns to the compressor 11.

[0302] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 functions simply as piping, and the working fluid continues to flow to the external condenser 130. The working fluid liquefies and releases heat in the external condenser 130. After being throttled and depressurized through the first electronic expansion valve 61, the working fluid flows to the first heat exchange assembly 21. In the first heat exchange assembly 21, the working fluid absorbs heat and vaporizes, becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate achieves cooling of the battery.

[0303] Embodiment 3 describes an operating condition where only the battery is cooled, and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate in parallel.

[0304] Under the operating condition where only the battery is cooled, the working medium flows through a working medium loop formed by the compressor 11, the on-board condenser 120, the external condenser 130, and the battery heat exchange module. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 opens the first exhaust passage 10c, the third on-off valve 53 opens the third exhaust passage, the fourth on-off valve 54 blocks the bypass flow passage 10f, the fifth on-off valve 55 opens the pipe, and the sixth on-off valve 56 blocks the pipe. The first electronic expansion valve 61 and the second electronic expansion valve 62 open the pipes for the throttling function, the third electronic expansion valve 63 blocks the pipe, and the fourth electronic expansion valve 64 blocks the pipe. The parallel switching valve 58 opens the pipe, and the series switching valve 57 blocks the series branch passage 10g.

[0305] The circulation path of the working medium flows out from the compressor 11 in sequence, passes through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the third on-off valve 53, the fifth on-off valve 55, the external condenser 130, the fourth one-way valve 44, and the second one-way valve 42, then flows into the first branch passage and the second branch passage. Further, the working medium flows into the first branch passage through the first electronic expansion valve 61, the second sensor 32, the first heat exchange assembly 21, the first sensor 31, and the parallel switching valve 58; the working medium also flows into the second branch passage through the second electronic expansion valve 62, the fourth sensor 34, the second heat exchange assembly 22, and the third sensor 33, and flows out from the second branch passage. After the working medium flowing into the first branch passage and the working medium flowing into the second branch passage are mixed, the mixed working medium passes through the second on-off valve 52, the fifth one-way valve 45, and the gas-liquid separator 15, and finally flows back to the compressor 11.

[0306] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 functions simply as piping, and the working fluid continues to flow to the external condenser 130. The working fluid liquefies and releases heat in the external condenser 130. After being throttled and depressurized through the first electronic expansion valve 61 and the second electronic expansion valve 62, the working fluid flows to the first heat exchange assembly 21 and the second heat exchange assembly 22. The working fluid absorbs heat in the first heat exchange assembly 21 and the second heat exchange assembly 22, respectively, and vaporizes, becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve cooling of the battery.

[0307] Embodiment 4 shows operating conditions in which only the battery is cooled and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate in series.

[0308] Under operating conditions where only the battery is cooled, the working fluid flows through a working fluid loop formed by the compressor 11, the on-board condenser 120, the off-board condenser 130, and the battery heat exchange module. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 opens the first exhaust passage 10c, the third on-off valve 53 opens the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 opens the piping, and the sixth on-off valve 56 blocks the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 open the piping for throttling, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 blocks the piping. The parallel switching valve 58 blocks the piping, and the series switching valve 57 opens the series branch passage 10g.

[0309] The circulation path of the working fluid flows out of the compressor 11 in order, through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the third on-off valve 53, the fifth on-off valve 55, the external condenser 130, the fourth one-way valve 44, the second one-way valve 42, the first electronic expansion valve 61, the second sensor 32, the first heat exchange assembly 21, the first sensor 31, the series switching valve 57, the fourth sensor 34, the sensor heat exchange assembly 22, the third sensor 33, the second on-off valve 52, the fifth one-way valve 45, and the gas-liquid separator 15, and finally returns to the compressor 11.

[0310] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 functions simply as piping, and the working fluid continues to flow to the external condenser 130. The working fluid liquefies and releases heat in the external condenser 130. After being throttled and depressurized through the first electronic expansion valve 61, the working fluid flows to the first heat exchange assembly 21 and the second heat exchange assembly 22. The working fluid absorbs heat in the first heat exchange assembly 21 and the second heat exchange assembly 22 and vaporizes, becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve cooling of the battery.

[0311] Embodiment 5 describes operating conditions in which the occupant compartment is cooled and the battery is cooled. Embodiment 5 is actually a condition in which Embodiment 1 and any one of Embodiments 2 through 4 are operating simultaneously.

[0312] Embodiment 6 describes operating conditions in which only the passenger compartment is heated, the temperature of the external environment is high, and as a result the external condenser 130 can absorb heat from the external environment.

[0313] Under operating conditions where only the occupant compartment is heated, the working fluid flows through a working fluid loop formed by the compressor 11, the on-board condenser 120, and the external condenser 130. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 opens the bypass passage 10f, the fifth on-off valve 55 opens the piping, and the sixth on-off valve 56 blocks the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 block the piping, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 opens the piping for throttling.

[0314] The circulation path of the working fluid proceeds in the following order: out of the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the fourth electronic expansion valve 64, the fifth on-off valve 55, the external condenser 130, the fourth one-way valve 44, the fourth on-off valve 54, the fifth sensor 35, the gas-liquid separator 15, and finally back to the compressor 11.

[0315] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage 10e to the on-board condenser 120. The working fluid liquefies and releases heat in the on-board condenser 120. After being throttled and depressurized through the fourth electronic expansion valve 64, the working fluid flows to the external condenser 130. In the external condenser 130, the working fluid exchanges heat with the external environment, absorbs heat, vaporizes, and finally becomes a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11 along the bypass passage 10f. In this way, the on-board condenser 120 achieves heating of the passenger compartment.

[0316] Embodiment 7 describes operating conditions in which only the passenger compartment is heated, the temperature of the external environment is low, and as a result the external condenser 130 cannot absorb heat from the external environment.

[0317] Under operating conditions where only the crew compartment is heated, the working fluid flows through a working fluid loop formed by the compressor 11 and the onboard condenser 120. In this case, the first on-off valve 51 blocks the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 opens the bypass passage 10f, the fifth on-off valve 55 blocks the piping, and the sixth on-off valve 56 opens the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 block the piping, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 opens the piping for throttling.

[0318] The circulation path of the working fluid flows out from the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, the on-board condenser 120, the fourth electronic expansion valve 64, the sixth on-off valve 56, the fourth on-off valve 54, the fifth sensor 35, and the gas-liquid separator 15, and finally returns to the compressor 11.

[0319] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the third exhaust passage 10e to the on-board condenser 120. The working fluid liquefies and releases heat in the on-board condenser 120. After being throttled and depressurized through the fourth electronic expansion valve 64, the working fluid flows into the bypass passage 10f and into the intake port of the compressor 11. In this way, the on-board condenser 120 heats the passenger compartment.

[0320] Embodiment 8 shows operating conditions in which only the battery is cooled when the ambient temperature is high, and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate independently. The first heat exchange assembly 21 operates, and the second heat exchange assembly 22 does not operate.

[0321] Under operating conditions where only the battery is heated, the working fluid flows through a working fluid loop formed by the compressor 11, the first heat exchange assembly 21, and the evaporator 140. In this case, the first on-off valve 51 opens the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 blocks the piping, and the sixth on-off valve 56 opens the piping. The first electronic expansion valve 61 opens the piping for throttling, the second electronic expansion valve 62 blocks the piping, the third electronic expansion valve 63 opens the piping for throttling, and the fourth electronic expansion valve 64 is blocked. The parallel switching valve 58 opens the piping, and the series switching valve 57 blocks the series branch passage 10g.

[0322] The working fluid circulation path proceeds in the following order: it flows out of the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, and the first on-off valve 51 to the first branch path; the working fluid flows through the first sensor 31, the first heat exchange assembly 21, the second sensor 32, and the first electronic expansion valve 61 to the first branch path; it flows out of the first branch path, then through the first one-way valve 41, the sixth on-off valve 56, the third electronic expansion valve 63, the evaporator 140, the third one-way valve 43, the fifth sensor 35, and the gas-liquid separator 15, and finally returns to the compressor 11.

[0323] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working fluid liquefies and releases heat in the first heat exchange assembly 21. After being throttled and depressurized through the first electronic expansion valve 61 and the third electronic expansion valve 63, the working fluid flows to the evaporator 140. In the evaporator 140, the working fluid absorbs heat and vaporizes, finally becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve heating of the battery.

[0324] Embodiment 9 shows operating conditions in which only the battery is heated when the ambient temperature is high, and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate in parallel.

[0325] Under operating conditions where only the battery is heated, the working fluid flows through a working fluid loop formed by the compressor 11, the battery heat exchange module, and the evaporator 140. In this case, the first on-off valve 51 opens the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 blocks the piping, and the sixth on-off valve 56 opens the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 open the piping for throttling, the third electronic expansion valve 63 opens the piping for throttling, and the fourth electronic expansion valve 64 is blocked. The parallel switching valve 58 opens the piping, and the series switching valve 57 blocks the series branch passage 10g.

[0326] The working fluid circulation path flows out from the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, and the first on-off valve 51 to the first and second branch paths. The working fluid then flows through the first sensor 31, the first heat exchange assembly 21, the second sensor 32, and the first electronic expansion valve 61 to the first branch path, and out from the first branch path. The working fluid then flows through the parallel switching valve 58, the third sensor 33, and the second heat exchange assembly 58. The fluid flows through the humb 22, the fourth sensor 34, and the second electronic expansion valve 62 to the second branch, and flows out of the second branch, where the working fluid flowing through the first branch and the working fluid flowing through the second branch are mixed. The mixed working fluid then flows through the first one-way valve 41, the sixth on-off valve 56, the third electronic expansion valve 63, the evaporator 140, the third one-way valve 43, the fifth sensor 35, and the gas-liquid separator 15, and finally returns to the compressor 11.

[0327] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working fluid liquefies and releases heat in the first heat exchange assembly 21 and the second heat exchange assembly 22, respectively. After being throttled and depressurized through the first electronic expansion valve 61, the second electronic expansion valve 62, and the third electronic expansion valve 63, the working fluid flows to the evaporator 140. In the evaporator 140, the working fluid absorbs heat and vaporizes, finally becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve heating of the battery.

[0328] Embodiment 10 shows operating conditions in which only the battery is heated when the ambient temperature is high, and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate in series.

[0329] Under operating conditions where only the battery is heated, the working fluid flows through a working fluid loop formed by the compressor 11, the battery heat exchange module, and the evaporator 140. In this case, the first on-off valve 51 opens the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 blocks the bypass passage 10f, the fifth on-off valve 55 blocks the piping, and the sixth on-off valve 56 opens the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 open the piping for throttling, the third electronic expansion valve 63 opens the piping for throttling, and the fourth electronic expansion valve 64 is blocked. The parallel switching valve 58 blocks the piping, and the series switching valve 57 opens the series branch passage 10g.

[0330] The circulation path of the working fluid flows out of the compressor 11 in order, passing through the first pressure sensor 81, the first temperature sensor 82, the first on-off valve 51, the parallel switching valve 58, the third sensor 33, the second heat exchange assembly 22, the fourth sensor 34, the first sensor 31, the first heat exchange assembly 21, the second sensor 32, the first electronic expansion valve 61, the first one-way valve 41, the sixth on-off valve 56, the third electronic expansion valve 63, the evaporator 140, the third one-way valve 43, the fifth sensor 35, and the gas-liquid separator 15, before finally returning to the compressor 11.

[0331] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working fluid liquefies and releases heat in the first heat exchange assembly 21 and the second heat exchange assembly 22. After being throttled and depressurized through the first electronic expansion valve 61 and the third electronic expansion valve 63, the working fluid flows to the evaporator 140. In the evaporator 140, the working fluid absorbs heat and vaporizes, finally becoming a low-temperature, low-pressure gaseous working fluid, which flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve heating of the battery.

[0332] Embodiment 11 shows operating conditions in which only the battery is heated when the ambient temperature is low, and the first heat exchange assembly 21 and the second heat exchange assembly 22 operate in parallel.

[0333] Under operating conditions where only the battery is heated, the working fluid flows through a working fluid loop formed by the compressor 11, the battery heat exchange module, and the evaporator 140. In this case, the first on-off valve 51 opens the second exhaust passage 10d, the second on-off valve 52 blocks the first exhaust passage 10c, the third on-off valve 53 blocks the third exhaust passage, the fourth on-off valve 54 opens the bypass passage 10f, the fifth on-off valve 55 blocks the piping, and the sixth on-off valve 56 opens the piping. The first electronic expansion valve 61 and the second electronic expansion valve 62 open the piping for throttling, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 is blocked. The parallel switching valve 58 opens the piping, and the series switching valve 57 blocks the series branch passage 10g.

[0334] The working fluid circulation path is as follows: it flows out from the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, and the first on-off valve 51 to the first and second branch paths; the working fluid flows through the first sensor 31, the first heat exchange assembly 21, the second sensor 32, and the first electronic expansion valve 61 to the first branch path, and flows out from the first branch path; the working fluid flows through the parallel switching valve 58 and the third sensor 33 The fluid then flows through the second heat exchange assembly 22, the fourth sensor 34, and the second electronic expansion valve 62 to the second branch, and flows out of the second branch, where the working fluid flowing through the first branch and the working fluid flowing through the second branch are mixed. The mixed working fluid then flows through the first one-way valve 41, the sixth on-off valve 56, the fourth on-off valve 54, the fifth sensor 35, and the gas-liquid separator 15, and finally returns to the compressor 11.

[0335] The high-temperature, high-pressure gaseous working fluid flows out of the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working fluid liquefies and releases heat in the first heat exchange assembly 21 and the second heat exchange assembly 22, respectively. After being throttled and depressurized through the first electronic expansion valve 61, the second electronic expansion valve 62, and the third electronic expansion valve 63, the working fluid flows to the compressor 11. The ambient temperature is low, so the working fluid naturally exchanges heat as it flows, eventually becoming a low-temperature, low-pressure gaseous working fluid that flows into the intake of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve heating of the battery.

[0336] Embodiment 12 illustrates operating conditions in which the occupant compartment and battery pack are heated simultaneously when the ambient temperature is high. Embodiment 12 is, in practice, a condition in which Embodiment 6 and any one of Embodiments 8 through 10 operate simultaneously.

[0337] The embodiments described above are intended solely to facilitate the explanation and simplify the description of this disclosure, and are not intended to show or imply that the thermal management system 100 can only operate in accordance with the examples shown in the embodiments under specific operating conditions. Therefore, the embodiments should not be construed as limitations on this disclosure.

[0338] In some embodiments of the present disclosure, the thermal management system further includes a dynamic thermal management subsystem 200. The dynamic thermal management subsystem 200 includes a fourth heat exchanger 71 and a coolant circulation system. The fourth heat exchanger 71 includes a first passage and a second passage, the first passage being connected to the coolant circulation system, and one end of the second passage communicating with at least one of the first main pipe 10a and the second main pipe 10b.

[0339] The thermal management system 100 further includes an air conditioning circulation loop 101, which includes a heating branch line. One of the first main pipe 10a and the second main pipe 10b communicates with a second passage, and the other of the first main pipe 10a and the second main pipe 10b is connected in parallel with the heating branch line. The controller is configured to control at least one of the heating branch line, the first main pipe 10a, and the second main pipe 10b to perform heat exchange.

[0340] The coolant flows through the first passage, and the working fluid flows through the second passage. Both the first and second passages are located in the fourth heat exchanger 71, and the first and second passages can exchange heat with each other. If the temperature of the coolant flowing through the second passage is higher than the temperature of the working fluid flowing through the first passage, the working fluid absorbs heat as it passes through the fourth heat exchanger 71. If the temperature of the coolant flowing through the second passage is lower than the temperature of the working fluid flowing through the first passage, the working fluid releases heat as it passes through the fourth heat exchanger 71.

[0341] In the coolant circulation system, heat exchange can occur between the heat generated by the dynamic thermal management subsystem 200 and the working fluid. The heat generated by the dynamic thermal management subsystem 200 can be used to heat or cool the working fluid, thereby assisting the battery heat exchange module in exchanging heat for the battery.

[0342] In some embodiments of the present disclosure, as shown in Figure 2, the dynamic thermal management subsystem 200 includes at least one of the high-pressure thermal management subsystem 201 and the engine thermal management subsystem 202.

[0343] The high-pressure heat management subsystem 201 may exchange heat with the air conditioning circulation loop 101, or the engine heat management subsystem 202 may exchange heat with the air conditioning circulation loop 101, or both the high-pressure heat management subsystem 201 and the engine heat management subsystem 202 may exchange heat with the air conditioning circulation loop 101.

[0344] In some specific embodiments of the present disclosure, the thermal management system further includes a high-pressure thermal management subsystem 201. The high-pressure thermal management subsystem 201 includes a fourth heat exchanger 71 and a coolant circulation system. The fourth heat exchanger 71 includes a first passage and a second passage. The first passage is connected to the coolant circulation system. One end of the second passage is selectively connected to the second end and the first heat exchanger 12, and the other end of the second passage is connected to the fourth heat exchanger 71.

[0345] In some embodiments of the present disclosure, the high-pressure thermal management subsystem 201 further includes a charging and distribution / motor assembly 72 and a first radiator 73. The charging and distribution / motor assembly 72 exchanges heat with the vehicle's motor and electronic control unit, and the charging and distribution / motor assembly 72 is connected between the coolant circulation system and the first radiator 73. The first radiator 73 is configured to exchange heat with the environment outside the vehicle.

[0346] In some embodiments of the present disclosure, the high-pressure thermal management subsystem 201 further includes a group of switching valves 74. The group of switching valves 74 is connected to two ends of the circulation loop, the charging and distribution / motor assembly 72, and the first radiator 73, respectively. The group of switching valves 74 operates to switch the high-pressure thermal management subsystem 201 between different operating conditions. Specifically, the group of switching valves 74 is a three-way valve.

[0347] The switching valve group 74 can control the direction of coolant flow and heat the working medium by utilizing the heat generated by the vehicle's motor and electronic control unit, or it can dissipate the heat generated by the vehicle's motor and electronic control unit to the outside of the vehicle via the first radiator 73.

[0348] In some embodiments of the present disclosure, the high-pressure thermal management system 100 further includes a water pump 75. The water pump 75 is positioned between the charging and distribution / motor assembly 72 and the fourth heat exchanger 71. The water pump 75 is configured to push coolant from the charging and distribution / motor assembly 72 to the fourth heat exchanger 71.

[0349] The high-pressure thermal management subsystem 201 has a first operating condition. Under the first operating condition, the charging and power distribution / motor assembly 72 and the second passage form a first loop. Coolant flowing out of the charging and power distribution / motor assembly 72 flows to the fourth heat exchanger 71 under the action of the water pump 75. After exchanging heat with the working medium in the second passage in the first passage of the fourth heat exchanger 71, the coolant flows back to the charging and power distribution / motor assembly 72 and exchanges heat with the vehicle's motor and electronic control unit.

[0350] If the working fluid circulation loop has an absorption requirement and the high-pressure thermal management subsystem 201 does not have a heat dissipation requirement, the high-pressure thermal management subsystem 201 may operate according to the first operating conditions. The high-temperature coolant flowing from the charging and distribution / motor assembly 72 flows into the second passage, exchanges heat with the low-temperature working fluid flowing through the first passage, and transfers the heat generated by the vehicle's motor and electronic control unit to the working fluid circulation loop. In this way, the heat generated by the vehicle's motor and electronic control unit is effectively utilized, thereby improving the heating capacity of the thermal management system 100 and reducing the energy consumption of the thermal management system 100.

[0351] The high-pressure thermal management subsystem 201 further has a second operating condition. In the second operating condition, the charging and distribution / motor assembly 72, the first radiator 73, and the second passage form a second loop. Coolant flowing out of the charging and distribution / motor assembly 72 flows to the fourth heat exchanger 71 under the action of the water pump 75. After exchanging heat with the working fluid in the second passage in the first passage of the fourth heat exchanger 71, the coolant flows to the first radiator 73. After heat exchange in the first radiator 73, the coolant flows back to the charging and distribution / motor assembly 72, exchanging heat with the vehicle's motor and electronic control unit.

[0352] If the working fluid circulation loop has an absorption requirement and the high-pressure thermal management subsystem 201 has a heat dissipation requirement, and the heat dissipation requirement of the high-pressure thermal management subsystem 201 is higher than the absorption requirement of the working fluid circulation loop, then the high-pressure thermal management subsystem 201 can operate according to the second operating condition. The high-temperature coolant flowing from the charging and distribution / motor assembly 72 flows into the second passage, exchanges heat with the low-temperature working fluid flowing through the first passage, and transfers the heat generated by the vehicle's motor and electronic control unit to the working fluid circulation loop. The coolant temperature remains high after the first heat exchange. Therefore, the coolant continues to flow to the first radiator 73, where it exchanges heat with the external environment for a second time and dissipates heat. The heat generated by the vehicle's motor and electronic control unit is effectively utilized, thereby improving the heating capacity of the thermal management system 100 and reducing the energy consumption of the thermal management system 100.

[0353] In addition, if the working fluid circulation loop has an endothermic requirement, and the heat generated by the high-pressure thermal management subsystem 201 is insufficient, and the coolant temperature is lower than the temperature of the external environment, the high-pressure thermal management subsystem 201 can also operate according to a second operating condition. The coolant exchanges heat with the external environment in the first radiator 73, raising the coolant temperature. The coolant flows through the circulation loop to the charging and distribution / motor assembly 72 and the fourth heat exchanger 71, where it exchanges heat with the low-temperature working fluid flowing through the first flow path, transferring heat from the external environment to the working fluid circulation loop and the high-pressure thermal management subsystem 201. In this way, heat is effectively utilized, thereby improving the heating capacity of the thermal management system 100 and reducing the energy consumption of the thermal management system 100.

[0354] The high-pressure thermal management subsystem 201 further includes mixed operating conditions. Under mixed operating conditions, the first and second loops circulate simultaneously. Coolant flowing from the charging and power distribution / motor assembly 72 flows to the third heat exchanger 14 under the action of the water pump 75. After exchanging heat with the working medium in the second passage in the first passage of the third heat exchanger 14, the coolant flows partially back to the charging and power distribution / motor assembly 72, exchanging heat with the vehicle's motor and electronic control unit, and partially flows to the first radiator 73. After heat exchange in the first radiator 73, the coolant flows back to the charging and power distribution / motor assembly 72, exchanging heat with the vehicle's motor and electronic control unit.

[0355] If the working fluid circulation loop has an endothermic requirement and the high-pressure thermal management subsystem 201 has a heat dissipation requirement, and the endothermic requirement of the working fluid circulation loop is higher than the heat dissipation requirement of the high-pressure thermal management subsystem 201, then the high-pressure thermal management subsystem 201 can operate according to mixed operating conditions.

[0356] The high-temperature coolant flowing from the charging and distribution / motor assembly 72 flows into the second passage, where it exchanges heat with the low-temperature working medium flowing through the first passage, transferring the heat generated by the vehicle's motor and electronic controls to the working medium circulation loop. A portion of the coolant that has undergone heat exchange flows back to the charging and distribution / motor assembly 72, while the other portion of the coolant continues to flow to the first radiator 73, where it undergoes a second heat exchange with the external environment and dissipates heat. The heat generated by the vehicle's motor and electronic controls is effectively utilized, thereby improving the heating capacity of the thermal management system 100 and reducing the energy consumption of the thermal management system 100.

[0357] The high-pressure thermal management subsystem 201 has a first operating condition, a second operating condition, and a mixed operating condition, and the coolant in the circulation loops of the first operating condition, the second operating condition, and the mixed operating condition all heat the working medium in the working medium circulation loop. Therefore, the operation of the thermal management system 100 under different operating conditions may also coordinate with the operation of the high-pressure thermal management subsystem 201 under different operating conditions.

[0358] For example, under operating conditions where only the crew compartment is heated, the thermal management system 100 can cooperate with the first operating conditions, second operating conditions, and mixed operating conditions of the high-pressure thermal management subsystem 201.

[0359] In some embodiments of the present disclosure, the thermal management system further includes an engine thermal management subsystem 202. The engine thermal management subsystem 202 includes a fifth heat exchanger 76 and a coolant circulation system. The fifth heat exchanger 76 includes a third passage and a fourth passage. The third passage is connected to the coolant circulation system. One end of the fourth passage is selectively connected to the second end b and the first heat exchanger 12, and the other end of the fourth passage is connected to the third heat exchanger 14.

[0360] In some embodiments of the present disclosure, the engine thermal management subsystem 202 further includes an engine assembly 77 and a second radiator 78. The engine assembly 77 exchanges heat with the vehicle's engine and is connected between the coolant circulation system and the second radiator 78. The second radiator 78 is configured to exchange heat with the environment outside the vehicle.

[0361] A vehicle 1000 according to an embodiment of the present disclosure includes any one of the aforementioned thermal management systems 100.

[0362] According to the vehicle 1000 in the embodiments of this disclosure, the aforementioned thermal management system 100 is provided, thereby reducing the frequency of maintenance and battery replacement, improving charging efficiency and the convenience of using the vehicle, which facilitates a rational layout of the vehicle.

[0363] In this specification, any references such as “one embodiment,” “several embodiments,” “a schematic embodiment,” “an example,” “a specific example,” or “several examples” mean that a particular feature, structure, material, or property described with reference to an embodiment or example is included in this disclosure or at least one embodiment or example of this disclosure. In this specification, the schematic expression of the foregoing terms does not necessarily represent the same embodiment or example. In addition, any particular feature, structure, material, or property described may be combined in an appropriate manner in any one or more embodiments or examples.

[0364] While embodiments of the present disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is defined by the appended claims and their equivalents. [Explanation of Symbols]

[0365] 1000 vehicles 100 Thermal Management Systems 200 Dynamic Thermal Management Subsystem 201 High-Pressure Thermal Management Subsystem 202 Engine Thermal Management Subsystem 300 batteries 301 Battery Core 301a Non-electrode heating temperature range 301b Electrode heating temperature range 101 Air conditioning circulation loop 102 Coolant Circulation System 10a First main pipe 10b Second main pipe 10c First exhaust passage 10d Second exhaust passage 10e Third exhaust passage 10f Bypass channel 10g series split 11 Compressor 12. First heat exchanger 120 Automotive Capacitors 13. Second heat exchanger 130 External condenser 14. Third heat exchanger 140 Evaporator 15 Gas-liquid separator 21 First heat exchange assembly 22 Second heat exchange assembly 31 First Sensor 32 Second sensor 33. The third sensor 34. The fourth sensor 35. The fifth sensor 41. First one-way valve 42 Second one-way valve 43. Third one-way valve 44. Fourth one-way valve 45. Fifth one-way valve 51 First on / off valve 52 Second shut-off valve 53 Third shut-off valve 54. Fourth shut-off valve 55. Fifth shut-off valve 56. Sixth shut-off valve 57 Series switching valve 58 Parallel switching valve 61 First electronic expansion valve 62 Second electronic expansion valve 63 Third Electronic Expansion Valve 64. Fourth Electronic Expansion Valve 65. Fifth Electronic Expansion Valve 66. The sixth electronic expansion valve 71. The fourth heat exchanger 72 Charging and Power Distribution / Motor Assembly 73. First radiator 74 Switching valve group 75 Water Pump 76. Fifth heat exchanger 77 Engine Assembly 78. Second radiator 81 First pressure sensor 82 First temperature sensor

Claims

1. A control method configured for a thermal management system, wherein the control method is To acquire a heat exchange signal, Controlling at least one of a first main tube and a second main tube in the thermal management system to exchange heat with a battery, wherein the first main tube is configured to exchange heat with a first region in the battery, and the second main tube is configured to exchange heat with a second region in the battery, and the first main tube and the second main tube are controlled independently such that the first region is different from the second region and the temperatures of the first region and the second region are controlled independently. Equipped with, The heat exchange parameters of the first heat exchange unit and the second heat exchange unit are different, the first heat exchange unit is configured to exchange heat with the first region and is located in the first main pipe, and the second heat exchange unit is configured to exchange heat with the second region and is located in the second main pipe. The first heat exchange unit and the second heat exchange unit are arranged on different sides of the battery. The first region is the electrode region of the battery, and the second region is the non-electrode region of the battery. The first heat exchange unit and the first electronic expansion valve are arranged in the first main pipe, and the first electronic expansion valve is located at the first end of the first heat exchange unit. The second heat exchange unit and the second electronic expansion valve are arranged within the second main pipe, and the second electronic expansion valve is located at the first end of the second heat exchange unit. If the temperature of the first region is higher than the temperature of the second region, the temperature difference ≥ a first temperature difference threshold, and a cooling command is received, the opening of the first electronic expansion valve is adjusted based on the degree of overheating of the second end of the first heat exchange unit, and the opening of the second electronic expansion valve is reduced at set intervals until it is detected that the temperature difference between the electrode region and the non-electrode region of the battery is less than the first threshold. A control method wherein the opening of the second electronic expansion valve is restarted to be adjusted based on the degree of overheating of the second end of the second heat exchange unit.

2. When the first condition is met, at least one of the first main pipe and the second main pipe is controlled to cool the battery. A control method for a thermal management system according to claim 1, wherein the first condition comprises at least one of the following: battery temperature ≥ first temperature threshold, charging power ≥ first power threshold, discharge power ≥ second power threshold, charging voltage ≥ first voltage threshold, discharge voltage ≥ second voltage threshold, charging current ≥ first current threshold, discharge current ≥ second current threshold, or a user cooling command.

3. When the second condition is met, at least one of the first main pipe and the second main pipe is controlled to heat the battery. The control method for a thermal management system according to claim 1, wherein the second condition comprises at least one of the following: battery temperature ≤ second temperature threshold, discharge power ≤ third power threshold, discharge voltage ≤ third voltage threshold, discharge current ≤ third current threshold, termination of battery self-heating, or user heating command.

4. The control method for a thermal management system according to claim 1, wherein the difference in the heat exchange parameters means that the amount of heat exchanged is different or the heat exchange efficiency is different.

5. A control method for a thermal management system according to claim 1, wherein the flow rate of the first main pipe and the flow rate of the second main pipe are different.

6. A control method for a thermal management system according to claim 5, wherein the pressure of the first main pipe and the pressure of the second main pipe are different, and the flow rate is different as a result.

7. When the third condition is met, the heat exchange parameters of the first main pipe and the second main pipe are controlled to be different. A control method for a thermal management system according to any one of claims 1 to 6, further comprising the above.

8. The third condition is that the temperature rise rate VH of the first region is greater than or equal to the first rate threshold, The difference V0 between the temperature rise rate of the first region and the temperature rise rate of the second region ≥ the first temperature rise threshold, or A control method for a thermal management system according to claim 7, comprising the difference T0 ≥ a third temperature threshold and T0 = TH - TL between the temperature TH of the first region and the temperature TL of the second region.

9. A control method for a thermal management system according to claim 8, wherein the temperature TH in the first region is the highest temperature of the battery, and the temperature TL in the second region is the lowest temperature of the battery.

10. When the fourth condition is met, the battery is cooled by at least one of the first main tube and the second main tube, wherein the heat exchange parameters of the first main tube and the second main tube are different. A control method for a thermal management system according to any one of claims 1 to 6, further comprising:

11. The control method for a thermal management system according to claim 10, wherein the fourth condition is that the battery temperature is greater than or equal to the fourth temperature threshold.

12. The control method for a thermal management system according to claim 10, wherein the fourth condition comprises at least one of the following: battery charging power ≥ first threshold, battery discharging power ≥ second threshold, or motor power ≥ third threshold.

13. The control method for a thermal management system according to claim 10, wherein the fourth condition comprises at least one of the following: charging voltage ≥ third voltage threshold, or discharging voltage ≥ fourth voltage threshold.

14. The control method for a thermal management system according to claim 10, wherein the fourth condition comprises at least one of the following: charging current ≥ fourth current threshold, or discharging current ≥ fifth current threshold.

15. The control method for a thermal management system according to claim 10, wherein the fourth condition comprises at least one of the following: termination of battery self-heating or a region cooling command entered by the user.

16. A control method for a thermal management system according to any one of claims 1 to 6, further comprising heating the battery by at least one of the first main tube and the second main tube, wherein the heat exchange parameters of the first main tube and the second main tube are different.

17. The control method for a thermal management system according to claim 16, wherein the fifth condition is that the battery temperature ≤ a fifth temperature threshold.

18. The control method for a thermal management system according to claim 16, wherein the fifth condition comprises at least one of the following: battery charging power ≤ fourth threshold value, or battery discharging power ≤ fifth threshold value.

19. The control method for a thermal management system according to claim 16, wherein the fifth condition comprises at least one of the following: discharge voltage ≤ fifth voltage threshold, or discharge current ≤ sixth current threshold.

20. The control method for a thermal management system according to claim 16, wherein the fifth condition comprises at least one of the following: charging voltage ≤ sixth voltage threshold, charging current ≤ seventh current threshold, or a region heating command input by the user.

21. A control method for a thermal management system according to any one of claims 1 to 6, wherein the first region is preferentially cooled, the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

22. A control method for a thermal management system according to any one of claims 1 to 6, wherein when the sixth condition is met, the first region is preferentially cooled.

23. Control method for a thermal management system according to claim 22, wherein the sixth condition is that the difference between the temperature of the first region and the temperature of the second region is greater than or equal to a first temperature difference threshold, and the battery temperature is greater than or equal to a fourth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region is greater than or equal to a first rate difference threshold, and the battery temperature is greater than or equal to the fourth temperature threshold.

24. The first region is preferentially cooled. The flow rate of the heat exchange medium in the first main pipe is greater than the flow rate of the heat exchange medium in the second main pipe. A control method for a thermal management system according to claim 21, comprising:

25. A control method for a thermal management system according to claim 24, wherein the difference between the flow rate of the heat exchange medium in the first main pipe and the flow rate of the heat exchange medium in the second main pipe is greater than or equal to the first flow rate threshold.

26. The first region is preferentially cooled. The temperature of the heat exchange medium at the inlet end of the first main pipe is lower than the temperature of the heat exchange medium at the inlet end of the second main pipe. A control method for a thermal management system according to claim 21, comprising:

27. A control method for a thermal management system according to any one of claims 1 to 6, wherein the second region is preferentially heated, the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is an electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

28. A control method for a thermal management system according to any one of claims 1 to 6, wherein when the seventh condition is met, the second region is preferentially heated.

29. The control method for a thermal management system according to claim 28, wherein the seventh condition is that the difference between the temperature of the first region and the temperature of the second region is greater than or equal to the second temperature difference threshold, and the battery temperature is less than or equal to the fifth temperature threshold, or the difference between the temperature rise rate of the first region and the temperature rise rate of the second region is greater than or equal to the second rate difference threshold, and the battery temperature is less than or equal to the fifth temperature threshold.

30. The second region is controlled to be preferentially heated. The flow rate of the heat exchange medium in the second main pipe is greater than the flow rate of the heat exchange medium in the first main pipe. A control method for a thermal management system according to claim 27, comprising:

31. A control method for a thermal management system according to claim 30, wherein the difference between the flow rate of the heat exchange medium in the second main pipe and the flow rate of the heat exchange medium in the first main pipe is greater than or equal to the second flow rate threshold.

32. The second region is controlled to be preferentially heated. The temperature of the heat exchange medium at the inlet end of the second main pipe is higher than the temperature of the heat exchange medium at the inlet end of the first main pipe. A control method for a thermal management system according to claim 27, comprising:

33. A control method for a thermal management system according to claim 32, wherein the difference between the temperature of the heat exchange medium at the inlet end of the second main pipe and the temperature of the heat exchange medium at the inlet end of the first main pipe is greater than or equal to the sixth threshold value.

34. A control method for a thermal management system according to claim 21, wherein when the eighth condition is met, the preferential cooling of the first region and / or the preferential heating of the second region is stopped, the temperature of the first region of the battery is higher than the temperature of the second region, or the rate of temperature rise of the first region of the battery is higher than the rate of temperature rise of the second region of the battery, or the first region of the battery is the electrode region of the battery and the second region of the battery is the non-electrode region of the battery.

35. The eighth condition is that the temperature difference between the first region and the second region is less than the seventh threshold, or The rate of temperature rise in the first region and the second region are the same, or A control method for a thermal management system according to claim 34, wherein the difference in the rate of temperature rise between the first region and the second region is less than an eighth threshold.

36. A vehicle that performs a control method for a thermal management system according to any one of claims 1 to 6.

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