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 TO RELATED APPLICATIONS This disclosure claims priority to and the benefit of Chinese Patent Application No. 2022112049102, filed on September 29, 2022. The entire contents of the above-referenced application are incorporated herein by reference.

[0002] The present application relates to the field of vehicles, and in particular to control methods and vehicles. [Background technology]

[0003] In the existing architecture of heat pump systems for the thermal management of the entire vehicle, the functions of the thermal management system are not diversified, and the heat exchange for the battery module often cannot meet the battery temperature requirements, resulting in large energy losses and low operating efficiency of the thermal management system. Summary of the Invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the related art. Therefore, the present disclosure provides a control method for exchanging heat 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 including obtaining a heat exchange signal and controlling at least one of a first main pipe in the thermal management system and a second main pipe in the thermal management system to exchange heat with a battery, the first main pipe configured to exchange heat with a first region in the battery and the second main pipe configured to exchange heat with a second region in the battery, the first region being different from the second region.

[0006] According to the control method of the thermal management system in the embodiment of the present disclosure, at least one of the first trunk pipe and the second trunk pipe 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.

[0007] In some embodiments of the present disclosure, the temperature of one of the first region and the second region is higher than the temperature of the other of the first region and the second region, 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, at least one of the first main conduit and the second main conduit is controlled to cool the battery when a first condition is met, the first condition including at least one of 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, at least one of the first main pipe and the second main pipe is controlled to heat the battery when a second condition is met, the second condition including at least one of 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.

[0010] In some embodiments of the present disclosure, the heat exchange parameters of the first trunk pipe and the second trunk 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, and the first heat exchange unit is configured to exchange heat with a first region and is disposed within the first main pipe, and the second heat exchange unit is configured to exchange heat with a second region and is disposed within the second main pipe.

[0012] In some embodiments of the present disclosure, different heat exchange parameters include different heat exchange amounts or different heat exchange efficiencies.

[0013] In some embodiments of the present disclosure, the flow rate of the first trunk and the flow rate of the second trunk are different.

[0014] In some embodiments of the present disclosure, the pressure in the first trunk and the pressure in the second trunk are different, which results in different flow rates.

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

[0016] In some embodiments of the present disclosure, the third condition is a temperature rise rate V of the first region. H ≥ first rate threshold, or difference between the temperature rise rate of the first region and the temperature rise rate of the second region V0 ≥ first temperature rise threshold, or temperature T H and the temperature of the second region T L difference 0 ≥ 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 is the maximum temperature of the battery, and the temperature of the second region T L is the minimum battery temperature.

[0018] In some embodiments of the present disclosure, the control method further includes, when a fourth condition is met, 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≧first threshold, battery discharging power≧second threshold, or motor power≧third threshold.

[0021] In some embodiments of the present disclosure, the fourth condition includes at least one of: charging voltage >= third voltage threshold, or discharging voltage >= 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 an end of battery self-heating or a zone cooling command entered by a user.

[0024] In some embodiments of the present disclosure, the control method further includes, when a fifth condition is met, 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≦fourth threshold, or battery discharging power≦fifth threshold.

[0027] In some embodiments of the present disclosure, the fifth condition includes at least one of: 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: charging voltage≦sixth voltage threshold, charging current≦seventh current threshold, or a region heating command input by a user.

[0029] In some embodiments of the present disclosure, the first region is preferentially cooled, and 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.

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

[0031] In some embodiments of the present disclosure, the sixth condition includes: a 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 a 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.

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

[0033] In some embodiments of the present disclosure, the difference between the flow rate of the heat exchange medium in the first trunk pipe and the flow rate of the heat exchange medium in the second trunk pipe is >= the first flow rate threshold.

[0034] In some embodiments of the present disclosure, preferentially cooling 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, preferentially cooling the first region includes the pressure at the outlet end of the first trunk being less than the pressure at the outlet end of the second trunk.

[0036] In some embodiments of the present disclosure, the second region is preferentially heated, and 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 the present disclosure, if the seventh condition is met, the second region is preferentially heated.

[0038] In some embodiments of the present disclosure, the seventh condition includes: a 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 a 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 second region to be preferentially heated includes a flow rate of the heat exchange medium in the second main pipe being greater than a flow rate of the heat exchange medium in the first main pipe.

[0040] In some embodiments of the present disclosure, the difference between the flow rate of the heat exchange medium in the second trunk pipe and the flow rate of the heat exchange medium in the first trunk pipe is ≧ the second flow rate threshold.

[0041] In some embodiments of the present disclosure, controlling the second region to be preferentially heated 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 the present disclosure, the difference between the temperature of the heat exchange medium at the inlet end of the second trunk pipe and the temperature of the heat exchange medium at the inlet end of the first trunk pipe is ≧the sixth threshold value.

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

[0044] In some embodiments of the present disclosure, the first region stops being preferentially cooled and / or the second region stops being preferentially heated when an eighth condition is met, where 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 the temperature difference between the first region and the second region being less than a seventh threshold, or the temperature increase rates of the first region and the second region being the same, or the temperature increase rate difference between the first region and the second region being less than an eighth threshold.

[0046] According to an embodiment of the present disclosure, a vehicle is provided for performing a control method for a thermal management system according to the foregoing embodiment of the present disclosure.

[0047] According to the vehicle of the embodiment of the present disclosure, at least one of the first trunk pipe and the second trunk pipe 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] Additional aspects and advantages of the disclosure will be set forth in the description that follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

[0049] The above and / or further aspects and advantages of the present disclosure will become apparent and easier to understand in the following description taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0050] [Figure 1] 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present disclosure; [Figure 2] FIG. 1 is a schematic structural diagram of a thermal management system and a dynamic thermal management subsystem according to an embodiment of the present disclosure. [Figure 3] 1 is a schematic diagram of a first implementation of a battery core according to an embodiment of the present disclosure. FIG. [Figure 4] FIG. 10 is a schematic diagram of a second implementation of a battery core according to an embodiment of the present disclosure. [Figure 5] 1 is a schematic diagram of a first implementation of a battery pack according to an embodiment of the present disclosure. [Figure 6] FIG. 10 is a schematic diagram of a second implementation of a battery pack according to an embodiment of the present disclosure. [Figure 7] 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present disclosure; [Figure 8] FIG. 1 is a schematic diagram of a vehicle according to some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0051] The following describes in detail the embodiments of the present disclosure. Examples of the embodiments are shown in the accompanying drawings, and in all the accompanying drawings, the same or similar reference numerals indicate the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to merely illustrate the present disclosure and cannot 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 including a battery heat exchange module, and the battery heat exchange module includes a first main pipe 10a and a second main pipe 10b.

[0053] The control method according to the embodiment of the present disclosure includes the following control operations.

[0054] A heat exchanger signal is obtained. Specifically, the heat exchange signal may be a cooling / heating command sent by a user, or may be a heat exchange signal detected by a detection module. For example, if it is detected that the maximum temperature of the battery is above a first set temperature, the heat exchange signal is sent to perform cooling, or if it is detected that the minimum temperature of the battery is below a second set temperature, the heat exchange signal is sent to perform heating. Of course, it should be understood that the above is merely an exemplary description.

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

[0056] It should be noted that the first region being different from the second region means that the first trunk pipe 10a and the second trunk pipe 10b are disposed at different positions in the battery 300, and thus the first trunk pipe and the second trunk pipe can be used to perform heat exchange at different positions in the battery 300. It should be further noted that the trunk pipe described in this disclosure refers to a flow path for circulating a heat exchange medium, and the trunk pipe can be a junction pipe, a branch path bypassing the junction pipe, etc.

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

[0058] When the battery requires a large amount of heat exchange, the first trunk pipe 10a and the second trunk pipe 10b may exchange heat simultaneously. When the battery requires a small amount of heat exchange, only one of the first trunk pipe 10a and the second trunk pipe 10b may exchange heat.

[0059] According to the control method of the thermal management system in the embodiment of the present disclosure, at least one of the first trunk pipe 10a and the second trunk 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, which can reduce the energy consumption of the thermal management system 100 and improve the functionality of the thermal management system 100.

[0060] 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; in other words, the temperatures of the first and second regions are different. Note that "different temperatures" means that the temperatures of the first and second regions are different when the battery is in an operating state. The operating state of a battery includes charging, discharging, etc. The "different temperatures" may include the average temperature of the first region being different from the average temperature of the second region, the maximum temperature of the first region being different from the maximum temperature of the second region, or the minimum temperature of the first region being different from the minimum temperature of the second region. Alternatively, it is only required that the temperature of at least a portion of the first region be different from the temperature of at least a portion of the second region at the same detection time. In some specific examples of the present disclosure, the first region includes an electrode heat generation temperature region of the battery 300, and the second region includes a non-electrode heat generation temperature region of the battery 300.

[0061] In some embodiments of the present 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 region and the second region. 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°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered good. If ΔT1>5°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered poor.

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

[0063] In some embodiments of the present disclosure, the maximum temperature of the first region and the maximum temperature of the second region are different, and the difference between the maximum temperature of the first region and the maximum temperature of the second region 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 region and the second region. 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 is less than 5°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered good. If ΔT2 is greater than 5°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered poor. Therefore, regional cooling may be performed on the battery based on the maximum temperatures in different regions of the battery, thereby improving the temperature uniformity of the battery.

[0064] In some embodiments of the present 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 region and the second region. For example, a lithium ferrous phosphate battery is used as an example. The difference between the minimum temperature T5 of the first region and the minimum temperature T6 of the second region is ΔT3. If ΔT3 is less than 5°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered good. If ΔT3 is greater than 5°C, the uniformity of the battery's charge and discharge performance in the first region and the second region may be considered poor.

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

[0066] Note that ΔT1, ΔT2, and ΔT3 may be the same or different and are specifically set based on battery parameters, which 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 the present disclosure, the temperature rise rate of the first region is higher than the temperature rise rate of the second region, i.e., the temperature rise rate of the first region and the temperature rise rate of the second region are different. Note that the different temperature rise rates mean that the temperature rise rate of the first region and the temperature rise rate of the second region are different when the battery is in an operating state. The operating state of the battery includes charging, discharging, etc. In this way, by using the first trunk pipe 10a and the second trunk pipe 10b, independent heat exchange is achieved in the first region and the second region, thereby realizing regional temperature control.

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

[0069] Generally, when the battery 300 operates, the electrodes generate a large amount of heat, and the temperature of the region near the electrodes is higher than the temperature of the region away from the electrodes. In some examples of the present disclosure, the first region includes an electrode-heated temperature region, and the second region includes a non-electrode-heated temperature region of the battery 300. Therefore, the temperature uniformity of the battery can be further improved.

[0070] In some embodiments of the present disclosure, when a first condition is met, at least one of the first and second main pipes 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 the battery needs to be cooled. Therefore, at least one of the first and second main pipes may be controlled to cool the battery according to the actual situation. The battery temperature when "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 the present disclosure, at least one of the first main conduit and the second main conduit is controlled to cool the battery when it is determined that the maximum temperature of the battery is ≧38° C. When it is determined that the maximum temperature of the battery is ≦34° C., the cooling is terminated.

[0072] In some embodiments of the present disclosure, the first region is an electrode region of the battery, and the second region is a non-electrode region of the battery. If at least one of the following conditions is met, namely, 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 electrode generates a large amount of heat and the temperature of the first region is high. Therefore, at least the first trunk pipe is controlled to cool the first region.

[0073] It should be noted that the first temperature threshold, the first power threshold, the second power threshold, the first voltage threshold, the second voltage threshold, the first current threshold, and the second current threshold can be set according to actual circumstances, for example, specifically based on battery parameters, such as 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 the present disclosure, when a second condition is met, at least one of the first main pipe and the second main pipe 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 user heating command. The battery temperature when "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 the ambient temperature affects the battery's discharge power and discharge voltage. If at least one of the following conditions is met, namely, discharge power≦the third power threshold, discharge voltage≦the third voltage threshold, or discharge current≦the third current threshold, it indicates that the discharge power, discharge voltage, or discharge current is low due to the battery's excessively low temperature caused by the ambient temperature. In this case, at least one of the first main pipe and the second main pipe is controlled to heat the battery.

[0076] In some embodiments of the present disclosure, at least one of the first main pipe and the second main pipe is controlled to heat the battery when it is determined that the minimum temperature of the battery is ≦10° C. The heating is terminated when it is determined that the minimum temperature of the battery is ≧12° C.

[0077] In some embodiments of the present disclosure, the first trunk pipe and the second trunk pipe have different heat exchange parameters. Different heat exchange parameters include different flow rates of the heat exchange medium, different temperatures of the heat exchange medium, etc. By differentiating the heat exchange parameters of the first trunk pipe and the second trunk pipe, 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 the heat exchange requirements of the second region, the first trunk pipe is controlled to preferentially perform heat exchange in the first region, thereby allowing the first region to cool or heat faster and improving temperature uniformity of the battery.

[0078] Furthermore, different heat exchange parameters include different heat exchange amounts or different heat exchange efficiencies.

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

[0080] In some embodiments of the present disclosure, the first heat exchange unit and the second heat exchange unit have different heat exchange parameters, the first heat exchange unit is configured to exchange heat with a first region and is disposed within the first trunk pipe, and the second heat exchange unit is configured to exchange heat with a second region and is disposed within the second trunk pipe.

[0081] The first heat exchange unit and the second heat exchange unit may be heat exchange members such as heat exchangers or wound heat exchange tubes, whereby the first heat exchange unit 21 and the second heat exchange unit 22 are arranged to facilitate heat exchange with the battery 300.

[0082] Generally, when the battery 300 operates, the electrodes generate a large amount of heat, and the temperature of the region near the electrodes is higher than the temperature of the region away from the electrodes. In some examples of the present disclosure, the first region includes an electrode-heated temperature region, and the second region includes a non-electrode-heated temperature region of the battery 300. Therefore, 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 disposed in the non-electrode heat generation temperature region 301a of the battery.

[0084] In some examples of the present disclosure, the first heat exchange unit 21 and the second heat exchange unit 22 are disposed 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 temperatures at different locations within the battery to exchange heat to achieve temperature control of different regions 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 disposed on different sides of the battery 300. Compared to being disposed on the same side of the battery, when the first heat exchange unit 21 and the second heat exchange unit 22 are disposed on different sides of the battery, the first heat exchange unit 21 and the second heat exchange unit 22 can heat different regions 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 can be in contact with the battery core of the battery and directly exchange heat with the battery core. For example, the first heat exchange unit 21 and the second heat exchange unit 22 can be the upper cover of the battery, or the first heat exchange unit 21 and the second heat exchange unit 22 can 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 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 alternatively be separate components.

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

[0090] In some embodiments of the present disclosure, the pressure of the first trunk pipe and the pressure of the second trunk pipe are different, thereby causing different flow rates. Specifically, the lengths of the first trunk pipe and the second trunk pipe may be different, causing different pressures in the first trunk pipe and the second trunk pipe. Alternatively, the pressure of the heat exchange medium flowing into the first trunk pipe and the pressure of the heat exchange medium flowing into the second trunk pipe may be different, causing different flow rates, thereby achieving zone control.

[0091] In some embodiments of the present disclosure, the control method further includes: when a third condition is met, the heat exchange parameters of the first main pipe and the second main pipe are different. In other words, only when the third condition needs to be met, the heat exchange parameters of the first main pipe and the second main pipe are controlled to be different, thereby realizing zone control. When the third condition is not met, the heat exchange parameters of the first main pipe and the second main pipe may be controlled to be the same, or both the first main pipe and the second main pipe may be controlled not to operate. Therefore, zone control can be realized and energy consumption can be reduced only when the condition is met.

[0092] In some embodiments of the present disclosure, the heat exchange signal and the third condition are different signals. When the heat exchange signal is acquired and the third condition is not satisfied, at least one of the first trunk pipe and the second trunk pipe is controlled to first exchange heat with the battery. When the third condition is satisfied, the heat exchange parameters of the first trunk pipe and the second trunk pipe are controlled to be different, for example, the flow rates of the first trunk pipe and the second trunk pipe may be controlled to be different. In some examples of the present disclosure, when the heat exchange signal is acquired and the battery cools down, the flow rates of the first trunk pipe and the second trunk pipe are controlled to be the same, and when the third condition is satisfied, the flow rate of the first trunk pipe is controlled to be different from the flow rate of the second trunk pipe.

[0093] In some embodiments of the present 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 is acquired. In this case, the heat exchange parameters of the first main pipe and the second main pipe are directly controlled differently. In other words, if the heat exchange signal is acquired, the thermal management system is directly controlled to enter the zone control mode.

[0094] In some embodiments of the present disclosure, the third condition is a temperature rise rate V of the first region. H ≧ the first rate threshold. In other words, in this case, the temperature rise in the first area is determined to be high, which causes a temperature difference between the first area and the second area, and the heat exchange parameters of the first main pipe and the second main pipe are controlled to be different, thereby realizing zone control and improving the temperature uniformity of the battery.

[0095] In some embodiments of the present disclosure, the third condition includes a difference V between the temperature rise rate of the first region and the temperature rise rate of the second region ≧ the first temperature rise threshold. In other words, in this case, the temperature rise rates of the first region and the second region are different, resulting in a temperature difference between the first region and the second region, which causes the heat exchange parameters of the first main pipe and the second main pipe to be controlled to be different, thereby realizing zone control and improving the temperature uniformity of the battery.

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

[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 circumstances, for example, specifically 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.). As another example, the first rate threshold, the first temperature rise threshold, and the third temperature threshold may be set based on the state of charge and the state of discharge. In some embodiments of the present disclosure, if the temperature rise rate of the first region is ≥ 2.5°C / min and the temperature rise rate of the second region is < 2.5°C / min or < 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 of the second region T L is the minimum temperature of the battery. Therefore, based on the difference between the maximum and minimum temperatures, it can be clearly determined whether there is a temperature difference between the first and second regions to determine whether region control needs to be performed.

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

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

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

[0102] In some embodiments of the present disclosure, the fourth condition includes battery temperature ≧ a fourth temperature threshold. Specifically, if the battery temperature is determined to be 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 main pipe and the second main pipe is controlled to cool the battery, and in this case, the heat exchange parameters of the first main pipe and the second main pipe are different. The battery temperature in "battery temperature ≧ the fourth temperature threshold" may be the maximum temperature of the battery or the average temperature of the battery.

[0103] In some embodiments of the present disclosure, the fourth temperature threshold is greater than the first temperature threshold. Specifically, if it is determined that the battery temperature is equal to or greater than the fourth temperature threshold, at least one of the first and second trunk pipes is controlled to first cool the battery, thereby differentiating the heat exchange parameters of the first and second trunk pipes to achieve zone control. For example, the first trunk pipe with a larger flow rate exchanges heat with the first zone with a higher temperature, improving the cooling effect of the first zone and improving the temperature uniformity of the battery. If it is determined that the battery temperature has dropped to or above the first temperature threshold, zone control is terminated, and at least one of the first and second trunk 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. It will be understood that if at least one of the above is met, it indicates that the battery, particularly the electrodes, generates a large amount of heat and needs to be cooled. In this case, at least one of the first trunk pipe and the second trunk pipe is controlled to cool the battery, and in this case, the heat exchange parameters of the first trunk pipe and the second trunk pipe 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, it can be determined that the first condition or the fourth condition is met based on the battery temperature. For example, if the battery temperature is equal to or greater than the fourth temperature threshold, it can be determined that the fourth condition is met. As another example, a temperature difference between the first region and the second region can be determined to determine that the first condition or the 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. It will be understood that if at least one of the above is met, it indicates that the battery, particularly the electrodes, generates a large amount of heat and needs to be cooled. In this case, at least one of the first main pipe and the second main pipe is controlled to cool the battery, and in this case, the heat exchange parameters of the first main pipe and the second main pipe are different.

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

[0108] In some embodiments of the present 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 met, it indicates that the battery, particularly the electrodes, generates a large amount of heat and needs to be cooled. In this case, at least one of the first main pipe and the second main pipe is controlled to cool the battery, and in this case, the heat exchange parameters of the first main pipe and the second main pipe 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, it can be determined that the first condition or the fourth condition is met based on the battery temperature. For example, if the battery temperature is equal to or greater than the fourth temperature threshold, it can be 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 that the first condition or the fourth condition is met.

[0110] In some embodiments of the present disclosure, the first threshold is 100 kW. In other words, if the charging power is ≧100 kW, the battery is in a high-power charging mode, such as a fast charging mode or a super charging mode. In this case, the heat generation amount of the battery is large, and at least one of the first main pipe and the second main pipe is controlled to cool the battery.

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

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

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

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

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

[0116] In some embodiments of the present disclosure, the fourth condition includes at least one of the termination of battery self-heating or a zone cooling command input by a user. In other words, the user can directly determine whether to enter zone cooling, without the need to detect temperature parameters, thereby reducing energy consumption. Furthermore, the user can input zone cooling commands through a terminal such as a mobile phone app or a driving computer. After the termination of battery self-heating due to large heat generation in the electrodes, a temperature difference occurs between the first zone and the second zone, which controls the battery to enter zone cooling and improves the temperature uniformity of the battery.

[0117] In some embodiments of the present disclosure, the self-heating of a battery refers to heating the battery by 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 speed 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, when a fifth condition is met, at least one of the first trunk pipe and the second trunk pipe heats the battery, and the heat exchange parameters of the first trunk pipe and the second trunk pipe are different. In other words, when it is determined that the fifth condition is met, both the first trunk pipe and the second trunk pipe can be controlled to heat the battery, and the flow rates and / or temperatures of the heat exchange media in the first trunk pipe and the second trunk pipe can be controlled to be different, so that the heat exchange parameters of the first trunk pipe and the second trunk pipe are controlled to be different. Alternatively, when it is determined that the fifth condition is met, one of the first trunk pipe and the second trunk pipe can be controlled to operate to heat the battery, and the other can be controlled not to operate.

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

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

[0121] In some embodiments of the present disclosure, the fifth condition includes battery temperature≦a fifth temperature threshold. Specifically, if it is determined that battery temperature≦the 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 main pipe and the second main pipe is controlled to heat the battery, and in this case, the heat exchange parameters of the first main pipe and the second main pipe are different. The battery temperature when "battery temperature≦the fifth temperature threshold" may be the minimum temperature of the battery or the average temperature of the battery.

[0122] In some embodiments of the present disclosure, the fifth temperature threshold is less than the second temperature threshold. Specifically, if it is determined that the battery temperature is less than or equal to the fifth temperature threshold, the battery enters zone control. At least one of the first and second main pipes is controlled to first heat the battery, whereby the heat exchange parameters of the first and second main pipes are different. For example, the second main pipe with a larger flow rate exchanges heat with the second zone with a lower temperature, improving the heating effect of the second zone and improving the temperature uniformity of the battery. If the battery temperature rises and it is determined that the battery temperature is less than or equal to the second temperature threshold, the zone control is terminated, and at least one of the first and second main pipes is controlled to heat the battery.

[0123] In some embodiments of the present 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 charging power and discharging power of the battery. If it is determined that the battery charging power≦fourth threshold, or battery discharging power≦fifth threshold, it indicates that the battery temperature is excessively low, and consequently, the charging power or discharging power cannot be increased to meet the set requirements. In this case, at least one of the first trunk pipe or the second trunk pipe is controlled to heat the battery, and the heat exchange parameters of the first trunk pipe and the second trunk pipe are controlled differently 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, the second or fifth condition may be determined to be met based on the battery temperature. For example, if the battery temperature is less than or equal to the fifth temperature threshold, the fifth condition may be determined to be met. As another example, the temperature difference between the first and second regions may be determined to determine whether the second or fifth condition is met.

[0125] 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. It should be understood that the battery temperature affects the battery's discharge voltage and discharge current. If it is determined that the discharge voltage≦fifth voltage threshold, or the discharge current≦sixth current threshold, it indicates that the battery temperature is excessively low, and as a result, the discharge voltage and discharge current cannot be increased to meet the set requirements. In this case, at least one of the first trunk pipe or the second trunk pipe is controlled to heat the battery, and the heat exchange parameters of the first trunk pipe and the second trunk pipe are controlled differently to increase 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, it can be determined that the second condition or the 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 can be determined that the fifth condition is met. As another example, the temperature difference between the first region and the second region can be determined to determine that the second condition or the 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-input area heating command. Specifically, if it is determined that the charging voltage≦sixth voltage threshold and the charging current≦seventh current threshold, it indicates that the battery temperature is low, and as a result, the charging voltage and charging current cannot be increased to meet the set requirements. In this case, at least one of the first trunk pipe or the second trunk pipe is controlled to heat the battery, and the heat exchange parameters of the first trunk pipe and the second trunk pipe are controlled differently to increase the battery temperature.

[0128] In some embodiments of the present disclosure, a first region is preferentially cooled, and the temperature of the first region of the battery is higher than the temperature of the second region, or the temperature increase rate of the first region of the battery is higher than the temperature increase rate 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, so the first region needs to be preferentially cooled, 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 higher flow rate of heat exchange medium or cooling the first region by using a heat exchange medium with a lower temperature.

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

[0130] Furthermore, the sixth condition includes: a 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 a 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 the present disclosure, preferentially cooling the first region includes a flow rate of the heat exchange medium in the first trunk pipe that is greater than a flow rate of the heat exchange medium in the second trunk pipe, and thus the first region is cooled by using a greater flow rate of the heat exchange medium, which can improve the rate at which the temperature of the first region drops and improve the temperature uniformity of the battery.

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

[0133] In some embodiments of the present disclosure, preferentially cooling the first region includes having a lower temperature of the heat exchange medium at the inlet end of the first main pipe than the temperature of the heat exchange medium at the inlet end of the second main pipe. Thus, by using a heat exchange medium with a lower temperature, the first region can be preferentially cooled, thereby ensuring preferential cooling effect in the first region and further improving temperature uniformity of the battery.

[0134] In some embodiments of the present disclosure, preferentially cooling the first region includes a pressure at the outlet end of the first trunk being less than a pressure at the outlet end of the second trunk, so that the flow resistance in the first trunk can be less than the flow rate of the second trunk, thereby allowing a greater flow rate of the heat exchange medium to bypass to the first trunk, thereby ensuring a preferential cooling effect on the first region and further improving the temperature uniformity of the battery.

[0135] In some embodiments of the present disclosure, the second region is preferentially heated, and 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. 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 the heating rate of the first region, thereby improving the temperature uniformity of the battery. Furthermore, in this disclosure, preferential heating may refer to heating the second region by using a higher flow rate of heat exchange medium or by using a heat exchange medium with a higher temperature.

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

[0137] Furthermore, the seventh condition includes: a 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 a 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] Additionally, 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 the present disclosure, controlling the second region to be preferentially heated includes controlling the flow rate of the heat exchange medium in the second main pipe to be greater than the flow rate of the heat exchange medium in the first main pipe, thereby heating the second region 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, thereby ensuring that the flow rate of the heat exchange medium bypassing the second main pipe is increased, ensuring that the second region is heated by using more heat exchange medium, improving the heating rate of the second region and the temperature uniformity of the battery.

[0141] In some embodiments of the present disclosure, controlling the second region to be preferentially heated includes controlling the temperature of the heat exchange medium at the inlet end of the second main pipe to be higher than the temperature of the heat exchange medium at the inlet end of the first main pipe, thereby heating the second region by using a heat exchange medium with a higher temperature, improving the heating rate of the second region and improving 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 value, thereby ensuring a higher temperature of the heat exchange medium in the second main pipe, and allowing the second region to be heated by using a heat exchange medium with a higher temperature, thereby improving the heating rate of the second region and the temperature uniformity of the battery.

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

[0144] In some embodiments of the present disclosure, the first region stops being preferentially cooled and / or the second region stops being preferentially heated when an eighth condition is met, where the temperature of the first region of the battery is higher than the temperature of the second region, or the temperature increase rate of the first region of the battery is higher than the temperature increase rate 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, thereby reducing the energy consumption of the system.

[0145] Furthermore, the eighth condition is that the temperature difference between the first region and the second region is less than the seventh threshold; or the rates of temperature rise in the first and second regions are the same; or The temperature rise rate difference between the first and second regions is less than an eighth threshold. In other words, if one of the eighth conditions is met, the temperature difference between the first and second regions is small, indicating that there is no need to perform the region heat exchange control. In this case, the battery is controlled to terminate the region cooling control or region heating control, thereby reducing the energy consumption of the system and ensuring a temperature uniformity effect.

[0146] In some embodiments of the present disclosure, the temperature increase rate of the first region is ≧2.5° C. / min, or T H -T L Zone control is enabled if it is determined that =T0 and T0≧10° C. Zone control is terminated if it is determined that the temperature rise rate of the first zone is <1° C. / min or T0<10° C.

[0147] In some embodiments of the present disclosure, if it is determined that the temperature rise rate of the first region is ≧2.5°C / min and the minimum temperature of the battery is >10°C, the battery is controlled to enter region cooling control, where the first region is controlled to be cooled preferentially and the heat exchange rate of the first main pipe is controlled to be greater than the heat exchange rate of the second main pipe.

[0148] In some embodiments of the present disclosure, if it is determined that T0≧10°C and the lowest temperature of the battery is greater than 10°C, the battery is controlled to enter regional cooling control, where the first region is cooled preferentially and the heat exchange amount of the first trunk pipe is controlled to be greater than the heat exchange amount of the second trunk pipe.

[0149] In some embodiments of the present disclosure, if it is determined that the temperature rise rate of the first region is ≧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 heat exchange amount of the second main pipe is controlled to be greater than the heat exchange amount of the first main pipe.

[0150] In some embodiments of the present disclosure, if it is determined that T0≧10°C and the lowest temperature of the battery is <10°C, the battery is controlled to enter regional heating control, and the second region is controlled to be heated preferentially, and the heat exchange amount of the second main pipe is controlled to be greater than the heat exchange amount of the first main pipe.

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

[0152] In some embodiments of the present disclosure, the maximum temperature of the battery is ≥ 40°C, T H -T L If it is determined that T0≧10℃ and the battery's lowest temperature is greater than 10℃, the battery is controlled to enter regional cooling control, where the first region is cooled preferentially and the heat exchange amount of the first main pipe is controlled to be greater than the heat exchange amount of the second main pipe.

[0153] In some embodiments of the present disclosure, the maximum temperature of the battery is ≦−10° C., T H -T L If it is determined that T0 is equal to or greater than 10°C and the battery's minimum temperature is less than 10°C, the battery is controlled to enter regional heating control, and the second region is controlled to be heated preferentially, and the heat exchange amount of the second main pipe is controlled to be greater than the heat exchange amount of the first main pipe.

[0154] In some embodiments of the present disclosure, a first heat exchange unit 21 and a first electronic expansion valve 61 are disposed in a first main pipe 10a, the first electronic expansion valve 61 is disposed 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] The second heat exchange unit 22 and the second electronic expansion valve 62 are disposed in the second main pipe 10b, and the second electronic expansion valve 62 is disposed at a 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, which is disposed 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 disposed 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 main pipe and the second main pipe 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 disposed between the first heat exchange unit 21 and the off-vehicle condenser 130, and the second electronic expansion valve 62 is disposed between the second heat exchange unit 22 and the off-vehicle condenser 130. When the battery 300 needs to be cooled, the refrigerant flowing out from the off-vehicle 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 from the off-vehicle condenser 130 flows sequentially through the second electronic expansion valve 62, the second heat exchange unit 22, and the sixth electronic expansion valve 66. Therefore, 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, so that the first trunk pipe 10a and the second trunk pipe 10b can be independently adjusted. 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 adjusting the temperatures of the first and second regions independently, thereby realizing region control.

[0159] Furthermore, the opening of at least one of 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 causing the heat exchange amount of the first trunk pipe 10a to be different from that of the second trunk pipe 10b. Specifically, when the temperature of the first region is higher than that of the second region, or when the temperature increase rate of the first region is higher than that of the second region, the heat exchange amount of the first trunk pipe 10a is greater than that of the second trunk pipe 10b during cooling, thereby allowing the first region to be cooled preferentially and achieving temperature uniformity in the battery 300. Meanwhile, when the heat exchange amount of the first trunk pipe 10a is less than that of the second trunk pipe 10b during heating, thereby allowing the second region to be heated preferentially.

[0160] 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 ≧ the first temperature difference threshold, and a cooling command is received, the opening of the first electronic expansion valve 61 is adjusted based on the superheat ΔTA of the second end of the first heat exchange unit 21, and the opening of the second electronic expansion valve 62 is reduced every set time. Note that the cooling command may be an operating command issued by a user, or may be a command issued by the system when the system 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 superheat degree 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 / satisfies the cooling requirements of the first region; by reducing the opening of the second electronic expansion valve 62 at set time intervals, the amount of refrigerant in the second heat exchange unit 22 can be reduced to avoid overcooling of the second region, thereby realizing different heat exchange amounts of 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, the flow rate and / or temperature of the refrigerant in the first heat exchange unit 21 can be ensured to meet / satisfy 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 actual situations.

[0163] In some embodiments of the present disclosure, the opening of the second electronic expansion valve 62 is reduced every set time until it is detected that the temperature difference between the first region and the second region is less than the first threshold, and the opening of the second electronic expansion valve 62 resumes being adjusted based on the superheat ΔTB at 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 the current opening. It should be noted that the values ​​of ΔTC2 and ΔTD2 can be defined according to actual situations.

[0165] In some embodiments of the present disclosure, the first sensor 31 is disposed between the fifth electronic expansion valve 65 and the first heat exchange unit 21, the second sensor 32 is disposed between the first electronic expansion valve 61 and the first heat exchange unit 21, the third sensor 33 is disposed between the sixth electronic expansion valve 66 and the second heat exchange unit 22, and the fourth sensor 34 is disposed between the second electronic expansion valve 62 and the second heat exchange unit 22, so that the degree of superheat at the second end of the first main pipe 10a can be calculated based on the pressure / temperature detected by the first sensor 31, and the degree of superheat at the second end of the second main pipe 10b can 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 area is higher than the temperature of the second area, the temperature difference is greater than or equal to 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 values, thereby reducing the flow resistance of the first main pipe 10a and the second main pipe 10b and ensuring the cooling effect.

[0167] 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 the first temperature difference threshold, and a cooling command is received, the opening of the first electronic expansion valve 61 is adjusted based on the superheat 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 superheat 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, the 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 the current opening. It should be noted that the values ​​of ΔTC1 and ΔTD1 can be defined according to actual situations.

[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 the current opening. It should be noted that the values ​​of ΔTC2 and ΔTD2 can be defined according to actual situations.

[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 is equal to or greater than 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 every set time. Therefore, the heat exchange amounts of the second trunk pipe 10b and the first trunk pipe 10a can be different, and the refrigerant temperature in the second trunk pipe 10b is higher than the refrigerant temperature in the first trunk pipe 10a, and / or the refrigerant flow rate in the second trunk pipe 10b is greater than the refrigerant flow rate in the first trunk pipe 10a, thereby preferentially heating the second region and achieving temperature uniformity in the battery 300.

[0171] Furthermore, the opening of the fifth electronic expansion valve 65 is reduced every set time until the temperature difference becomes less than the second threshold, after which the opening of the fifth electronic expansion valve 65 stops being reduced.

[0172] It should be noted that the heating command may be an operating command issued by a user, or may be a command issued by the system when the system 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 the present disclosure, when the temperature of the first region is higher than the temperature of the second region, the temperature difference is greater than or equal to 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 subcooling degree 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 subcooling degree ΔT2 of the first end of the second heat exchange unit 22. Thus, the heat exchange amounts of the first heat exchange unit 21 and the second heat exchange unit 22 can be adjusted in real time, thereby ensuring the 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. Therefore, the temperature uniformity of the battery 300 can be further ensured. Note that T3, T4, T5, and T6 can be set according to actual circumstances.

[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 the 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 subcooling degree 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 subcooling degree ΔT2 of the first end of the second heat exchange unit 22. Thus, the heat exchange amounts of the first heat exchange unit 21 and the second heat exchange unit 22 can be adjusted in real time, thereby ensuring the 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. Therefore, the temperature uniformity of the battery 300 can be further ensured. Note that T7, T8, T9, and T10 can be set according to actual situations.

[0179] Furthermore, the degree of subcooling 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 subcooling 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 making it possible to obtain the degree of subcooling in real time.

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

[0181] According to one embodiment of the present disclosure, there is provided a thermal management system 100 including 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 disposed in the first main pipe 10a, and a second heat exchange assembly 22 is disposed 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 the battery.

[0182] The thermal management system 100 according to the present disclosure is applied to a vehicle. The vehicle can be a petroleum-fueled vehicle, a gas-fueled vehicle, a new energy vehicle, or a railcar. The new energy vehicle can be a battery electric vehicle, a hybrid electric vehicle, a range extended vehicle (EV), etc. The battery heat exchange module in the thermal management system 100 is configured to exchange heat with a battery of the vehicle. The battery can be configured to supply electricity to the vehicle. For example, the battery can be used as an operational power supply for the vehicle, or the battery can be used as a driving power supply for the vehicle to provide driving power to the vehicle as an alternative or partial alternative to fuel, natural gas, etc., or the battery can be configured to power some components of the vehicle, such as a motor, so that the battery can be used for at least one operational power consumption requirement, such as starting, navigating, or driving the vehicle.

[0183] The first heat exchange assembly 21 and the second heat exchange assembly 22 exchange heat with the battery to regulate the battery temperature, thereby ensuring that the battery has an appropriate operating temperature and stable, reliable operation of the battery. For example, in winter when the ambient temperature is low, the battery may be heated to increase the starting speed of the battery. As another example, in summer when the ambient temperature is excessively high or when the operating temperature of the battery is high, the battery may be cooled to improve the operating safety of the battery and extend the operating life of the battery.

[0184] The thermal management system 100 of the present 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 disposed in the first main pipe 10a, and the second heat exchange assembly 22 is disposed in the second main pipe 10b. Thus, the controller can control one of the first heat exchange assembly 21 and the second heat exchange assembly 22 to exchange heat with the battery. The working medium circulating in the first main pipe 10a and the second main pipe 10b may be the same or different. The working medium may be water, a liquid working medium other than water, or another medium capable of undergoing a phase change, such as carbon dioxide or a refrigerant. For example, a liquid working medium circulates in the first main pipe 10a, and a medium capable of undergoing a phase change circulates in the second main pipe 10b. For example, the first trunk pipe 10a is connected to a high pressure cooling system or an engine cooling system for circulating a coolant therein, and the second trunk pipe 10b is connected to an air conditioning system for circulating a phase change medium therein.

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

[0186] For example, refer to FIG. 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 disposed between the first heat exchange assembly 21 and the second heat exchange assembly 22. The first heat exchange assembly 21 is disposed on one side (upper side) of the battery, and the second heat exchange assembly 22 is disposed on the other side (lower side) of the battery. The first heat exchange assembly is the top cover of the battery, and the second heat exchange assembly is the base plate of the battery. When the battery requires a large amount of heat exchange, the first main pipe 10a and the second main pipe 10b may exchange heat simultaneously. When 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 disposed on one side of the battery, and the second heat exchange assembly 22 is disposed on the other side of the battery. When 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.

[0187] If the battery requires a large amount of heat exchange, the first trunk pipe 10a and the second trunk pipe 10b may exchange heat simultaneously. If the battery requires a small amount of heat exchange, only one of the first trunk pipe 10a and the second trunk pipe 10b may exchange heat. The first heat exchange assembly 21 is disposed on one side of the battery, and the second heat exchange assembly 22 is disposed 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 pipes have different heat exchange modes. When the first and second heat exchange assemblies 21 and 22 are arranged in different regions 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 heats the battery, while the second heat exchange assembly 22 cools the battery, 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 pipes, and heating by one of the first and second main pipes and cooling by the other. Different thermal management modes are selected to adapt to different temperatures in different regions of the battery, thereby equalizing the battery temperature.

[0189] For example, referring to FIGS. 3 and 4, FIG. 3 is a schematic diagram of a first implementation of a battery core according to the present disclosure, and FIG. 4 is a schematic diagram of a second implementation of a battery core according to the present disclosure. The battery includes multiple battery cores. The multiple battery cores are disposed within the battery. Electrodes are disposed at two ends of the battery core 301, or an electrode is disposed 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-heated area, and the area away from the electrodes is the non-electrode-heated area. Generally, when the battery 300 operates, the electrodes generate a large amount of heat, causing the temperature of the area near the electrodes to be higher than the temperature of 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-heated temperature area 301b, and a second heat exchange assembly 22 is disposed in the non-electrode-heated temperature area 301a of the battery. When the temperature of the electrode heat generation temperature region 301b is higher than the operating temperature of the battery, the first heat exchange assembly 21 cools the electrode heat generation temperature region 301b. When the temperature of the non-electrode heat generation 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 heat generation temperature region 301a of the battery.

[0190] For example, under certain operating conditions, the efficiency of heat exchange with the battery by 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 by the first heat exchange assembly 21 and the second heat exchange assembly 22 combined. In addition, the heat exchange efficiencies of the first heat exchange unit and the second heat exchange unit for the battery may also be different. Therefore, by disposing the controller, the first heat exchange assembly 21, the second heat exchange assembly 22, or a combination of the first heat exchange assembly 21 and the second heat exchange assembly 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 temperature of the battery, the battery heat exchange module exchanges heat with the battery at an appropriate efficiency, which can reduce the energy consumption of the thermal management system 100 and improve the functionality of the thermal management system 100.

[0191] According to the thermal management system 100 of the embodiment of the present 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, so that the battery heat exchange module exchanges heat with the battery at different efficiencies or in different thermal management modes. Based on the temperature of the battery, the controller controls the battery heat exchange module to exchange heat with the battery at appropriate efficiencies or in different thermal management modes, so that the energy consumption of the thermal management system 100 can be reduced and the functionality of the thermal management system 100 can be improved.

[0192] In some embodiments of the present disclosure, the working medium circulates in both the first main pipe 10a and the second main pipe 10b, and the working medium is configured to exchange heat with the battery at 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 including a heating branch, a first main pipe 10a connected in parallel with the heating branch, a second main pipe 10b connected in parallel with the heating branch, and a controller configured to control at least one of the heating branch, the first main pipe 10a, and the second main pipe 10b to exchange heat.

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

[0195] The heating branch of the air conditioning circulation loop 101 is configured to exchange heat with and heat the passenger 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 passenger compartment and the heat exchange with the battery do not conflict with each other.

[0196] The controller may control the heating branch to exchange heat alone, or the controller may control the first heat exchange assembly 21 in the first trunk pipe 10a to exchange heat alone, or the controller may control the second heat exchange assembly 22 in the second trunk pipe 10b to exchange heat alone. Further, the controller may control the heating branch, the first trunk pipe 10a, and the second trunk pipe 10b to heat in cooperation with each other. Further, the controller may control the heating branch, the first trunk pipe 10a, and the second trunk pipe 10b to exchange heat simultaneously. The controller may control the heating branch to heat the passenger compartment while controlling the battery heat exchange module to heat the battery, or the controller may further control the heating branch to heat the passenger compartment while controlling the battery heat exchange module to cool the battery.

[0197] In some embodiments of the present disclosure, the air conditioning circulation loop 101 includes a cooling branch. A first trunk pipe 10a is connected in parallel with the cooling branch, and a second trunk pipe 10b is connected in parallel with the cooling branch. The controller is configured to control at least one of the cooling branches, the first trunk pipe 10a, and the second trunk pipe 10b to exchange heat. The cooling branch includes an evaporator 140 and a third electronic expansion valve 63. The third electronic expansion valve 63 is disposed between the off-vehicle condenser 130 and the evaporator 140. The cooling branch further includes a third one-way valve 43. The third one-way valve 43 is disposed 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 passenger compartment to cool the passenger 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 cooling the passenger compartment and exchanging heat with the battery do not conflict with each other.

[0199] The controller may control the cooling branch to exchange heat alone, or the controller may control the first heat exchange assembly 21 in the first trunk pipe 10a to exchange heat alone, or the controller may control the second heat exchange assembly 22 in the second trunk pipe 10b to exchange heat alone. Further, the controller may control the cooling branch, the first trunk pipe 10a, and the second trunk pipe 10b to exchange heat simultaneously. The controller may control the battery heat exchange module to heat the battery while controlling the cooling branch to cool the passenger compartment, or the controller may further control the battery heat exchange module to cool the battery while controlling the cooling branch to cool the passenger compartment.

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

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

[0202] The cooling branch is connected in parallel with the first trunk pipe 10a and the second trunk pipe 10b, and the heating branch is connected in parallel with the first trunk pipe 10a and the second trunk pipe 10b. Thus, the cooling branch, the heating branch, the first trunk pipe 10a, and the second trunk pipe 10b all operate independently of each other, which prevents heat exchange with the passenger compartment and heat exchange with the battery from conflicting with each other.

[0203] The controller may control the heating branch to exchange heat alone, the controller may control the cooling branch to exchange heat alone, the controller may control the first heat exchange assembly 21 in the first main pipe 10a to exchange heat alone, or the controller may control the second heat exchange assembly 22 in the second main pipe 10b to exchange heat alone.

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

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

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

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

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

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

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

[0211] The working medium's phase when heating the battery is different from that when cooling 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 heating the battery is greater than the amount of working medium required when cooling the battery. 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 trunk pipe 10a and / or the second trunk pipe 10b 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 and reduces the amount of working medium in the first trunk pipe 10a and / or the second trunk pipe 10b to meet the amount of working medium required to cool the battery.

[0212] In some specific embodiments of the present disclosure, the storage device is configured as a receiver-drier, and the receiver-drier is configured to store the liquid working medium and discharge the stored liquid working medium. The receiver-drier can further remove moisture and impurities from the working medium to avoid damaging and clogging the working medium piping and 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 port 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 series.

[0214] When the air conditioning circulation loop 101 is operating, a working medium flows into the compressor 11 through its intake port. The low-temperature, low-pressure gaseous working medium is compressed by the compressor 11, and then becomes a high-temperature, high-pressure gaseous working medium, which flows out of the compressor 11's exhaust port. A first port of the first heat exchanger 12 is connected to the compressor 11's exhaust port, a 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 compressor 11's intake port. Therefore, the working medium flows out of the compressor 11, flows through the first heat exchanger 12, then through the second heat exchanger 13, and after another heat exchange, finally returns to the compressor 11, forming a working medium loop and completing one cycle.

[0215] The heating branch includes a first heat exchanger 12, a first main pipe 10a is connected in parallel with the first heat exchanger 12, and a second main pipe 10b is connected in parallel with the first heat exchanger 12. The controller is configured to control the exhaust of 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, and to realize 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 with the first trunk pipe 10a, and the heating branch is connected in parallel with the second trunk pipe 10b. The first heat exchanger 12 on the heating branch, the first heat exchange assembly 21 on the first trunk pipe 10a, and the second heat exchange assembly 22 on the second trunk pipe 10b are all connected in parallel with 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 of the compressor 11 is selectively connected to at least one of the heating branch path, the first trunk pipe 10a, and the second trunk pipe 10b, and the working medium flowing out of the exhaust of the compressor 11 is a high-temperature, high-pressure gaseous working medium. Therefore, when the exhaust of the compressor 11 is connected to one of the heating branch path, the first trunk pipe 10a, and the second trunk pipe 10b, one of the heating branch path, the first trunk pipe 10a, and the second trunk pipe 10b generates heat.

[0218] The controller may control the exhaust of the compressor 11 to be communicated with the heating branch to achieve heat exchange in the first heat exchanger 12. The controller may further control the exhaust of the compressor 11 to be communicated with the first trunk pipe 10a to control the first heat exchange assembly 21 to perform heat exchange. The controller may further control the exhaust of the compressor 11 to be communicated with the second trunk pipe 10b to control the second heat exchange assembly 22 to perform heat exchange. The controller may further control the exhaust of the compressor 11 to be simultaneously communicated with any two or more of the heating branch, the first trunk pipe 10a, and the second trunk pipe 10b to control the first heat exchanger 12, the first heat exchange assembly 21, or the second heat exchange assembly 22 to simultaneously perform heat exchange. Optionally, the controller may control the first heat exchanger 12 to heat the passenger 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 port 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 path includes a third heat exchanger 14, 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 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, and to realize 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, a working medium flows into the compressor 11 through its intake port. The low-temperature, low-pressure gaseous working medium is compressed by the compressor 11, and then flows out of the compressor 11 through its exhaust port as a high-temperature, high-pressure gaseous working medium. A first port of the second heat exchanger 13 is connected to the compressor 11's exhaust port, a 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 compressor 11's intake port. Thus, the working medium flows out of the compressor 11, through the second heat exchanger 13, and then through the third heat exchanger 14. The working medium releases heat and is liquefied in the second heat exchanger 13, then undergoes throttling and pressure reduction, and then enters the third heat exchanger 14, where it absorbs heat and vaporizes, providing cooling in the third heat exchanger 14. The gaseous working medium eventually returns to the compressor 11, forming a working medium loop and completing one cycle.

[0222] The cooling branch is connected in parallel with the first trunk pipe 10a, and the cooling branch is connected in parallel with the second trunk pipe 10b. The third heat exchanger 14 on the cooling branch, the first heat exchange assembly 21 on the first trunk pipe 10a, and the second heat exchange assembly 22 on the second trunk pipe 10b are all connected in parallel with 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 be in communication with the cooling branch to realize heat exchange through the third heat exchanger 14. The controller may further control the second heat exchanger 13 to be in communication with the first main pipe 10a to control the first heat exchange assembly 21 to exchange heat. The controller may further control the second heat exchanger 13 to be in communication with the second main pipe 10b to control the second heat exchange assembly 22 to exchange heat. The controller may further control the second heat exchanger 13 to be in communication with any two or more of the cooling branch, the first main pipe 10a, and the second main pipe 10b simultaneously to control the third heat exchanger 14, the first heat exchange assembly 21, or the second heat exchange assembly 22 to exchange heat simultaneously. Optionally, the controller may control the third heat exchanger 14 to cool the passenger 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 port 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 sequentially connected.

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

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

[0227] The heating branch is connected in parallel with the first trunk pipe 10a, and the heating branch is connected in parallel with the second trunk pipe 10b. The first heat exchanger 12 on the heating branch, the first heat exchange assembly 21 on the first trunk pipe 10a, and the second heat exchange assembly 22 on the second trunk pipe 10b are all connected in parallel with 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 with the first trunk pipe 10a, and the cooling branch is connected in parallel with the second trunk 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 with 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] Because the heating branch passage is connected in parallel to the first trunk pipe 10a and the heating branch passage is connected in parallel to the second trunk pipe 10b, the exhaust of the compressor 11 is selectively connected to at least one of the heating branch passage, the first trunk pipe 10a, and the second trunk pipe 10b to exchange heat with at least one of the heating branch passage, the first trunk pipe 10a, and the second trunk pipe 10b. Specifically, the working medium flowing from the exhaust of the compressor 11 is a high-temperature, high-pressure gaseous working medium. Therefore, when the exhaust of the compressor 11 is connected to one of the heating branch passage, the first trunk pipe 10a, and the second trunk pipe 10b, at least one of the heating branch passage, the first trunk pipe 10a, and the second trunk pipe 10b generates heat.

[0229] A cooling branch is connected in parallel with the first trunk pipe 10a and a cooling branch is connected in parallel with the second trunk pipe 10b, so that the intake of the compressor 11 is selectively connected to at least one of the cooling branch, the first trunk pipe 10a, and the second trunk 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 trunk pipe 10a, and the second trunk pipe 10b, and exchanges heat with at least one of the cooling branch, the first trunk pipe 10a, and the second trunk pipe 10b. Optionally, at least one of the cooling branch, the first trunk pipe 10a, and the second trunk pipe 10b provides cooling.

[0230] The controller is configured to control the exhaust of 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 realizing 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 of the compressor 11 to be communicated with the heating branch to achieve heat exchange in the first heat exchanger 12. The controller may further control the exhaust of the compressor 11 to be communicated with the first trunk pipe 10a to control the first heat exchange assembly 21 to perform heat exchange. The controller may further control the exhaust of the compressor 11 to be communicated with the second trunk pipe 10b to control the second heat exchange assembly 22 to perform heat exchange. The controller may further control the exhaust of the compressor 11 to be simultaneously communicated with any two or more of the heating branch, the first trunk pipe 10a, and the second trunk pipe 10b to control the first heat exchanger 12, the first heat exchange assembly 21, or the second heat exchange assembly 22 to simultaneously perform heat exchange. Optionally, the controller may control the first heat exchanger 12 to heat the passenger 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 realizing 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 be in communication with the cooling branch to realize heat exchange through the third heat exchanger 14. The controller may further control the second heat exchanger 13 to be in communication with the first main pipe 10a to control the first heat exchange assembly 21 to exchange heat. The controller may further control the second heat exchanger 13 to be in communication with the second main pipe 10b to control the second heat exchange assembly 22 to exchange heat. The controller may further control the second heat exchanger 13 to be in communication with any two or more of the heating branch, the first main pipe 10a, and the second main pipe 10b simultaneously to control the third heat exchanger 14, the first heat exchange assembly 21, or the second heat exchange assembly 22 to exchange heat simultaneously. Optionally, the controller may control the third heat exchanger 14 to cool the passenger compartment while controlling the battery heat exchange module to cool the battery. Optionally, the controller may control the first heat exchanger 12 to cool the passenger compartment while controlling the battery heat exchange module to heat the battery.

[0234] In some embodiments of the present disclosure, the first heat exchanger 12 is an on-board condenser 120, which is configured to heat the passenger compartment. As the working medium flows through the working medium loop jointly formed by the compressor 11 and the on-board condenser 120, the high-temperature, high-pressure gaseous working medium flowing from the exhaust of the compressor 11 exchanges heat in the on-board condenser 120, and the working medium releases heat and liquefies. The working medium is then throttled and reduced in pressure, absorbs heat, and vaporizes, and finally becomes a low-temperature, low-pressure gaseous working medium flowing from the intake port of the compressor 11, completing one cycle. Alternatively, the on-board condenser 120 may simply function as a pipe, and the working medium flows through the on-board condenser 120 without heat exchange.

[0235] In some specific embodiments of the present disclosure, in a working medium loop jointly formed by the compressor 11, the on-board condenser 120, and the second heat exchanger 13, the high-temperature, high-pressure gaseous working medium flowing from the exhaust of the compressor 11 exchanges heat in the on-board condenser 120, and the working medium releases heat and becomes liquefied. The on-board condenser 120 is configured to heat the passenger compartment.

[0236] The controller may control the exhaust of the compressor 11 to selectively communicate with at least one of the on-board condenser 120, the first heat exchange assembly 21, and the second heat exchange assembly 22. The controller is configured to vary the flow path of the working medium in the air conditioning circulation loop 101, thereby allowing the passenger compartment to be heated and / or the battery to be heated.

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

[0238] In some embodiments of the present disclosure, the second heat exchanger 13 is an off-vehicle condenser 130. The working medium releases heat as it passes through the off-vehicle condenser 130, and the off-vehicle condenser 130 can generate heat. For example, in winter when the ambient temperature is low, vehicle components need to be preheated before starting. The off-vehicle condenser 130 generates heat for the components so that the starting speed of the vehicle can be increased. Alternatively, the off-vehicle condenser 130 may simply function as a pipe, and the working medium flows through the off-vehicle 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 passenger compartment.

[0240] As the working medium flows through the working medium loop jointly formed by the compressor 11 and the evaporator 140, the high-temperature, high-pressure gaseous working medium flowing out of the compressor 11's exhaust exchanges heat in the pipeline, and the working medium releases heat and liquefies. The working medium is then throttled and reduced in pressure before entering the evaporator 140, where it absorbs heat and vaporizes, cooling the evaporator 140. The working medium finally becomes a low-temperature, low-pressure gaseous working medium flowing in from the intake port of the compressor 11, completing one cycle.

[0241] In some specific embodiments of the present disclosure, in the working medium loop jointly formed by the compressor 11, the second heat exchanger 13, and the evaporator 140, the high-temperature, high-pressure gaseous working medium flowing from the discharge of the compressor 11 exchanges heat in the second heat exchanger 13, where the working medium releases heat and liquefies. The working medium is then throttled and reduced in pressure and flows into the evaporator 140, where it absorbs heat and evaporates, configured to cool the passenger compartment. The working medium then flows into the intake of the compressor 11 as a low-temperature, low-pressure gaseous working medium, 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 configured to vary the flow path of the working medium in the air conditioning circulation loop 101, thereby allowing the passenger compartment to be cooled and / or the battery to be cooled.

[0243] In some specific embodiments of the present disclosure, in a working medium loop jointly formed by the compressor 11, the on-board condenser 120, the off-board condenser 130, and the evaporator 140, the high-temperature, high-pressure gaseous working medium discharged from the compressor 11 exchanges heat in the on-board condenser 120, where the working medium releases heat and liquefies. The on-board condenser 120 is configured to heat the passenger compartment. Alternatively, the on-board condenser 120 may simply be used as a passageway, where the working medium flows through the on-board condenser 120 without heat exchange. The working medium then continues to the off-board condenser 130, where the working medium may undergo heat exchange to release heat a second time. Alternatively, the working medium simply passes through the off-board condenser 130 without heat exchange there. After releasing heat, the liquefied working medium is throttled and reduced in pressure and flows into the evaporator 140, where it absorbs heat and evaporates in the evaporator 140, which is configured to cool the passenger compartment. The working medium then becomes a low-temperature, low-pressure gaseous working medium and flows into the intake port of the compressor 11, completing one cycle.

[0244] The controller may control the discharge of the compressor 11 to selectively communicate with at least one of the on-board 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 configured to change the flow path of the working medium in the air conditioning circulation loop 101, which allows the thermal management system 100 to operate under different operating conditions, and the thermal management system 100 of the present disclosure has robust functionality.

[0245] When the controller controls the exhaust of the compressor 11 to be connected to the on-board condenser 120, the controller controls the off-board condenser 130 to be connected to the evaporator 140, and the controller controls the exhaust of the compressor 11 not to be connected to the first main pipe 10a and the second main pipe 10b, the working medium passes through the on-board condenser 120 without heat exchange, the working medium releases heat when passing through the off-board condenser 130, and the working medium absorbs heat when passing through the evaporator 140, thereby allowing the thermal management system 100 to achieve an operating condition for independently cooling the passenger compartment.

[0246] When the controller controls the exhaust of the compressor 11 to be connected to the on-board condenser 120, the controller controls the off-board condenser 130 to be connected to the first main pipe 10a and the second main pipe 10b, and the controller controls the exhaust of the compressor 11 not to be connected to the first main pipe 10a and the second main pipe 10b, and the off-board condenser 130 not to be connected to the evaporator 140, the working medium passes through the on-board condenser 120 without heat exchange, the working medium releases heat as it passes through the off-board condenser 130, and the working medium absorbs heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, thereby allowing the thermal management system 100 to achieve an operating condition for cooling the battery.

[0247] When the controller controls the exhaust of the compressor 11 to be connected to the on-board condenser 120, the controller controls the off-board condenser 130 to be connected to the first main pipe 10a and the second main pipe 10b, the off-board condenser 130 is connected to the evaporator 140, and the controller controls the exhaust of the compressor 11 not to be connected to the first main pipe 10a and the second main pipe 10b, the working medium passes through the on-board condenser 120 without heat exchange, the working medium releases heat as it passes through the off-board condenser 130, the working medium absorbs heat as it passes through the first heat exchange assembly 21 and / or the second heat exchange assembly 22, and the working medium absorbs heat as it passes through the evaporator 140, thereby allowing the thermal management system 100 to achieve an operating condition that cools the passenger compartment while cooling the battery.

[0248] When the controller controls the compressor 11 exhaust to be connected to the on-board condenser 120 and when the controller controls the compressor 11 exhaust not to be connected to the first main pipe 10a and the second main pipe 10b, the working medium releases heat as it passes through the on-board condenser 120, thereby enabling the thermal management system 100 to achieve an operating condition for heating the passenger compartment.

[0249] When the controller controls the exhaust of the compressor 11 to be connected to the first main pipe 10a and the second main pipe 10b, and when the controller controls the exhaust of the compressor 11 not to be connected to the on-board condenser 120, the working medium 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 an operating condition for heating the battery.

[0250] When the controller controls the exhaust of the compressor 11 to be connected to the on-board condenser 120 and the controller controls the exhaust of the compressor 11 to be connected to the first main pipe 10a and the second main pipe 10b, the working medium releases heat as it passes through the on-board condenser 120, and the working medium 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 an operating condition that heats the passenger compartment and the battery simultaneously.

[0251] In some embodiments of the present disclosure, the thermal management system 100 includes a first exhaust passage 10c. The battery heat exchange module is connected to the air intake via the first exhaust passage 10c, and the working medium flowing through the battery heat exchange module can flow back to the air intake via the first exhaust passage 10c. For example, when the battery cools down, the working medium releases heat in the off-vehicle condenser 130, then flows out of the exhaust, absorbs heat in the battery heat exchange module, and then returns to the air intake 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 medium can flow to the battery heat exchange module via the second exhaust passage 10d. For example, when the battery heats up, the working medium flows out of the exhaust, through the second exhaust passage, and into the battery heat exchange module, where it releases heat.

[0253] The thermal management system 100 further includes a third exhaust passage 10e that communicates the exhaust with the on-board condenser 120. The working medium flows through the third exhaust passage 10e to the off-vehicle condenser 130, where it releases heat.

[0254] In some embodiments of the present disclosure, the controller includes a plurality of control valves that operate to allow the exhaust to communicate with at least one of the on-board condenser 120 and the battery heat exchange module, thereby allowing the working medium from the exhaust to flow to the on-board condenser 120 or the battery heat exchange module. The control valves are provided to control the direction of the working medium flow and to control the operation of the thermal management system 100.

[0255] In some specific embodiments of the present 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 to the second exhaust passage 10d, and the third on-off valve 53 is connected between the off-vehicle condenser 130 and the exhaust; in other words, the third on-off valve 53 is connected in series to the third exhaust passage 10e. The second on-off valve 52 is connected in series to the first exhaust passage 10c, and when the second on-off valve 52 is closed, the working medium from the second exhaust passage 10d is prevented from flowing to the return intake port.

[0256] The first on-off valve 51 controls the opening and closing of the second exhaust passage 10d, thereby controlling whether the working medium flows from the exhaust to the battery heat exchange module. When the first on-off valve 51 is off, the working medium 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, thereby controlling whether the working medium flows from the exhaust to the off-vehicle condenser 130. When the third on-off valve 53 is closed, the working medium is prevented from flowing to the off-vehicle 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 controls the second exhaust passage 10d to open, the working medium flowing out of 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 disposed in the first exhaust passage 10c and can control the opening and closing of the first exhaust passage 10c. This prevents the working medium from the second exhaust passage 10d from flowing into 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, and the fourth electronic expansion valve 64 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 the second end of the battery heat exchange module and the third heat exchanger 14, and the second switching valve 42 is connected in series between the second end of the battery heat exchange module and the second heat exchanger 13. The first switching valve 41 may control opening and closing between the battery heat exchange module and the third heat exchanger 14, and the second switching valve 42 may control opening and closing between the battery heat exchange module and the second heat exchanger 13. When one of the first switching valve 41 and the second switching valve 42 is opened, the first main pipe 10a is connected in parallel to the first heat exchanger 12, the second main pipe 10b is connected in parallel to the first heat exchanger 12, the first main pipe 10a is connected in parallel to the third heat exchanger 14, and the second main pipe 10b is connected in parallel to the third heat exchanger 14.

[0260] In a specific embodiment of the present disclosure, the first switching valve 41 is configured as a first one-way valve 41, and the first one-way valve 41 is configured to allow the working medium to flow from the battery heat exchange module to the third heat exchanger 14. The first one-way valve 41 controls the working medium to flow steadily from the battery heat exchange module to the third heat exchanger 14, which can improve the flexibility of the working medium, avoid backflow of the working medium, and improve the operational stability of the thermal management system 100. In addition, the first one-way valve 41 can operate stably and continuously, thereby reducing active control, which facilitates operation and control.

[0261] In a specific embodiment of the present disclosure, the second switching valve 42 is configured as a second one-way valve 42, and the second one-way valve 42 is configured to allow the working medium to flow from the second heat exchanger 13 to the battery heat exchange module. The second one-way valve 42 controls the working medium to flow steadily from the second heat exchanger 13 to the battery heat exchange module, which can improve the flexibility of the working medium, prevent backflow of the working medium, and improve the operational stability of the thermal management system 100. In addition, the second one-way valve 42 can operate stably and continuously, thereby reducing active control, which facilitates operation and control.

[0262] In some embodiments of the present disclosure, a first sensor 31 and a second sensor 32 are disposed within the first main pipe 10a, with the first sensor 31 disposed at a first end of the first heat exchange assembly 21 and the second sensor 32 disposed at a second end of the first heat exchange assembly 21. A third sensor 33 and a fourth sensor 34 are further disposed within the second main pipe 10b, with the third sensor 33 disposed at a first end of the second heat exchange assembly 22 and the fourth sensor 34 disposed 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 medium in the first trunk pipe 10a and various values ​​of the working medium in the second trunk pipe 10b. The controller can control the flow of the working medium in the first trunk pipe 10a and the second trunk pipe 10b based on the temperature of the battery. This not only facilitates operation but also allows the battery to quickly reach an appropriate operating temperature, thereby improving the operating stability of the battery.

[0264] In some specific embodiments of the present 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 the present disclosure, a first sensor 31, a second sensor 32, and a first flow regulation element are disposed within the first trunk pipe 10a. The first sensor 31 is disposed at a first end of the first heat exchange assembly 21, the first flow regulation element is disposed at a second end of the first heat exchange assembly 21, and the second sensor 32 is disposed between the second end of the first heat exchange assembly 21 and the first flow regulation element. A third sensor 33, a fourth sensor 34, and a second flow regulation element are further disposed within the second trunk pipe 10b. The third sensor 33 is disposed at a first end of the second heat exchange assembly 22, the second flow regulation element is disposed at a second end of the second heat exchange assembly 22, and the fourth sensor 34 is disposed between the second end of the second heat exchange assembly 22 and the second flow regulation element.

[0266] In some specific embodiments of the present 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 regulating element regulates the flow rate of the working medium in the first trunk pipe 10a, thereby regulating the pressure in the first trunk pipe 10a and achieving the throttling and pressure reduction functions. The third flow regulating element regulates the flow rate of the working medium in the second trunk pipe 10b, thereby regulating the pressure in the second trunk pipe 10b and achieving the throttling and pressure reduction functions. In this way, the pressure of the working medium in the first trunk pipe 10a and the second trunk pipe 10b is kept within a safe range, preventing the working medium in the first trunk pipe 10a and the second trunk pipe 10b from building up to an excessive pressure that would cause the working medium to break through the piping and damage the battery, thereby improving the operating stability of the battery.

[0268] As the working medium flows through the working medium loop jointly formed by the compressor 11, the on-board condenser 120, the off-board condenser 130, and the battery heat exchange module, the working medium releases heat in the on-board condenser 120 or the off-board condenser 130, and then passes through the first flow regulating element and / or the second flow regulating element to be throttled and reduced in pressure, becoming a low-temperature, low-pressure liquid working medium. After evaporating and absorbing heat in the battery heat exchange module, the working medium becomes a low-temperature, low-pressure gaseous working medium, which then flows into the compressor 11 through 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 disposed in the first main pipe 10a and the fourth switching valve being disposed in the second main pipe 10b.

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

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

[0272] In some specific embodiments of the present disclosure, a first electronic expansion valve 61 is disposed in the first main pipe 10a and a second electronic expansion valve 62 is disposed in the second main pipe 10b. A first sensor 31 is disposed at a first end of the first heat exchange assembly 21, the first electronic expansion valve 61 is disposed at a second end of the first heat exchange assembly 21, and the second sensor 32 is disposed between the second end of the first heat exchange assembly 21 and the first electronic expansion valve 61. A third sensor 33 is disposed at a first end of the second heat exchange assembly 22, the second electronic expansion valve 62 is disposed at a second end of the second heat exchange assembly 22, and the fourth sensor 34 is disposed 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 medium flowing therethrough. The electronic expansion valve also has an opening / closing function and can selectively block the pipe in which the electronic expansion valve is installed to control the flow or stagnation of the working medium in the pipe. Therefore, when the first electronic expansion valve 61 is disposed in the first main pipe 10a, the first flow control element and the third selector valve can be eliminated. Similarly, when the second electronic expansion valve 62 is disposed in the second main pipe 10b, the second flow control element and the fourth selector valve can be eliminated, thereby reducing the number of components and easing the difficulty of installation.

[0274] In some specific embodiments of the present disclosure, a fifth switching valve is disposed at a first end of the evaporator 140, and the fifth switching valve 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 disposed. When the fifth switching valve is opened, the working medium can flow through the evaporator 140 to the compressor 11.

[0275] In a specific embodiment of the present disclosure, the fifth switching valve is configured as a third one-way valve 43, which is configured to allow the working medium to flow from the evaporator 140 to the compressor 11. The third one-way valve 43 controls the working medium to flow steadily from the evaporator 140 to the compressor 11, which can improve the flexibility of the working medium, prevent backflow of the working medium, and improve the operational stability of the thermal management system 100. In addition, the third one-way valve 43 can operate stably and continuously, thereby reducing active control, which facilitates operation and control.

[0276] In some specific embodiments of the present disclosure, a third electronic expansion valve 63 is disposed at the second end of the evaporator 140, and the third electronic expansion valve 63 is connected in series between the off-vehicle condenser 130 and the evaporator 140. The electronic expansion valve has a flow rate regulation function, and the third electronic expansion valve 63 can reduce the pressure of the working medium flowing therethrough. The electronic expansion valve further has an opening / closing function, and can further selectively block the piping to control whether the working medium flows to the evaporator 140.

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

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

[0279] In some specific embodiments of the present disclosure, a fifth switching valve 55 is disposed at a first end of the off-vehicle condenser 130, and the fifth switching valve 55 is connected in series between the off-vehicle condenser 130 and the exhaust of the compressor 11. When the fifth switching valve is opened, the working medium can flow to the off-vehicle condenser 130.

[0280] In some specific embodiments of the present disclosure, the fourth one-way valve 44 is disposed at the second end of the off-vehicle condenser 130. The fourth one-way valve 44 is configured to allow the working medium to flow out of the off-vehicle condenser 130, improving flexibility of the working medium and avoiding 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, which is disposed on one 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 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 intake of the compressor 11 and prevent the working medium flowing to the intake from flowing to the heat exchange assembly, thereby improving the safety of use 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, which is in communication with the intake of the compressor 11. After being subjected to throttling and evaporation, the working medium becomes a low-temperature, low-pressure gaseous working medium. Because it is impossible to completely ensure that all of the working medium becomes a gaseous working medium through evaporation and heat absorption, the working medium must flow into the gas-liquid separator 15 before flowing back into the compressor 11. The gas-liquid separator 15 separates the gaseous working medium from the liquid working medium and drives only the low-temperature, low-pressure gaseous working medium to flow into the compressor 11, preventing liquid hammering on functional components within the compressor 11 and ensuring 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 10g. One end of the series branch 10g is connected to the first trunk 10a, and the other end of the series branch 10g is connected to the second trunk 10b. The controller is further configured to control the series branch 10g to connect the first trunk 10a to the second trunk 10b in series based on the temperature of the battery, so that the first trunk 10a and the second trunk 10b simultaneously exchange heat.

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

[0286] In some embodiments of the present disclosure, the series branch 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 through the series switching valve 57. The series switching valve 57 can control the opening and closing of the series branch 10g. When the series switching valve 57 blocks the series branch 10g, the first trunk pipe 10a and the second trunk pipe 10b are connected in parallel. When the series switching valve 57 connects the series branch 10g, the first trunk pipe 10a and the second trunk pipe 10b can be connected in series.

[0287] In some embodiments of the present disclosure, the first sensor 31 is disposed 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 disposed 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 medium.

[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 disposed 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 trunk pipe 10a and the second trunk pipe 10b. When the parallel switching valve 58 is opened, the first trunk pipe 10a and the second trunk pipe 10b can be connected in parallel.

[0289] In some embodiments of the present disclosure, a first heat exchange assembly 21 is positioned on one side of the battery and a second heat exchange assembly 22 is positioned on the other side of the battery, thereby improving the heat exchange efficiency of the battery by exchanging heat 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, and the first heat exchange plate and the second heat exchange plate are disposed on two opposite sides of the battery. Compared with a design provided with one heat exchange plate, the first heat exchange plate and the second heat exchange plate can cool or heat two opposite sides of the battery, thereby improving the cooling or heating efficiency of the battery, enabling the battery to quickly reach an appropriate operating temperature, and improving the operating 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 multiple heat exchange assemblies, and several heat exchange assemblies are connected in parallel to increase the area for heat exchange with the battery, thereby further improving the heat exchange efficiency for the battery.

[0292] In some embodiments of the present disclosure, one heat exchange assembly is disposed in an electrode heated area of ​​the battery and one heat exchange assembly is disposed in a non-electrode heated area of ​​the battery.

[0293] The controller can control the heat exchange assemblies disposed in the electrode-heated areas of the battery to cool to a greater extent and the heat exchange assemblies disposed in the non-electrode-heated areas of the battery to cool to a lesser extent based on the temperature of the battery. Alternatively, the controller can control the heat exchange assemblies disposed in the electrode-heated areas of the battery to cool and the heat exchange assemblies disposed in the non-electrode-heated areas of the battery to heat based on the temperature of the battery.

[0294] The following describes one embodiment of the operation of the thermal management system 100 under different operating conditions, with reference to FIG.

[0295] Embodiment 1 illustrates an operating condition in which only the passenger compartment is cooled.

[0296] Under operating conditions where only the passenger compartment is cooled, the working medium flows through a working medium loop formed by the compressor 11, on-board condenser 120, off-board condenser 130, and 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 and second electronic expansion valves 61 and 62 block the piping, the third electronic expansion valve 63 opens the piping for its throttling function, and the fourth electronic expansion valve 64 blocks the piping.

[0297] The working medium circulation path flows in the following order: from the compressor 11, 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 off-board 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, and finally back to the compressor 11.

[0298] The high-temperature, high-pressure gaseous working medium 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 simply functions as a pipe, and the working medium continues to flow to the off-board condenser 130. The working medium liquefies and releases heat in the off-board condenser 130. After being throttled and reduced in pressure through the third electronic expansion valve 63, the working medium flows to the evaporator 140. In the evaporator 140, the working medium absorbs heat and vaporizes, finally becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the evaporator 140 achieves cooling of the passenger compartment.

[0299] Embodiment 2 shows an operating condition 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 medium flows through the working medium 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 its throttling function, 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 selector valve 58 opens the piping, and the series selector valve 57 blocks the series branch passage 10g.

[0301] The working medium circulation path flows, in order, from the compressor 11, 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 off-board condenser 130, the fourth one-way valve 44, and the second one-way valve 42 to the first branch path, and the working medium 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 path, and finally returns to the compressor 11.

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

[0303] Embodiment 3 illustrates 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 operating conditions where only the battery is cooled, the working medium flows through the working medium 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 their throttling functions, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 blocks the piping. The parallel selector valve 58 opens the piping, and the series selector valve 57 blocks the series branch passage 10g.

[0305] The working medium circulation path flows from the compressor 11, 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 off-board condenser 130, the fourth one-way valve 44, and the second one-way valve 42 to the first branch path and the second branch path, and the working medium also passes 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 flows through the second electronic expansion valve 62, the fourth sensor 34, the second heat exchange assembly 22, and the third sensor 33 into the second branch path, and then flows out of the second branch path. After the working medium flowing through the first branch path and the working medium flowing through the second branch path 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 medium flows from the exhaust of the compressor 11 through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 simply functions as a pipe, and the working medium continues to flow to the off-board condenser 130. The working medium liquefies and releases heat in the off-board condenser 130. After being throttled and reduced in pressure through the first electronic expansion valve 61 and the second electronic expansion valve 62, the working medium flows to the first heat exchange assembly 21 and the second heat exchange assembly 22. The working medium absorbs heat and vaporizes in the first heat exchange assembly 21 and the second heat exchange assembly 22, respectively, becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the first heat exchange plate and the second heat exchange plate achieve battery cooling.

[0307] Embodiment 4 illustrates 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 series.

[0308] Under operating conditions where only the battery is cooled, the working medium flows through the working medium 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 their throttling functions, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 blocks the piping. The parallel selector valve 58 blocks the piping, and the series selector valve 57 opens the series branch passage 10g.

[0309] The working medium circulation path flows, in order, from the compressor 11, 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 off-board 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 medium flows from the exhaust of the compressor 11 through the third exhaust passage to the on-board condenser 120. The on-board condenser 120 simply functions as a pipe, and the working medium continues to flow to the off-board condenser 130. The working medium liquefies and releases heat in the off-board condenser 130. After being throttled and reduced in pressure through the first electronic expansion valve 61, the working medium flows to the first heat exchange assembly 21 and the second heat exchange assembly 22. The working medium absorbs heat and vaporizes in the first heat exchange assembly 21 and the second heat exchange assembly 22, becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the first and second heat exchange plates achieve battery cooling.

[0311] Embodiment 5 shows an operating condition in which the passenger compartment is cooled and the battery is cooled. In reality, Embodiment 5 is a condition in which Embodiment 1 and any one of Embodiments 2 to 4 operate simultaneously.

[0312] In the sixth embodiment, an operating condition is shown in which only the passenger compartment is heated and the temperature of the environment outside the vehicle is high, allowing the off-vehicle condenser 130 to absorb heat from the environment outside the vehicle.

[0313] Under operating conditions where only the passenger compartment is heated, the working medium flows through a working medium loop formed by the compressor 11, the on-board condenser 120, and the off-board 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 and second electronic expansion valves 61 and 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 working medium circulation path flows 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 off-board 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 medium flows from the exhaust of the compressor 11 and passes through the third exhaust passage 10e to the on-board condenser 120. The working medium liquefies and releases heat in the on-board condenser 120. After being throttled and reduced in pressure through the fourth electronic expansion valve 64, the working medium flows to the off-board condenser 130. In the off-board condenser 130, the working medium exchanges heat with the outside environment, absorbs heat, and vaporizes, eventually becoming a low-temperature, low-pressure gaseous working medium that flows along the bypass passage 10f into the intake port of the compressor 11. In this way, the on-board condenser 120 heats the passenger compartment.

[0316] In the seventh embodiment, an operating condition is illustrated in which only the passenger compartment is heated and the temperature of the environment outside the vehicle is low, thereby preventing the off-vehicle condenser 130 from absorbing heat from the environment outside the vehicle.

[0317] Under operating conditions where only the passenger compartment is heated, the working medium flows through a working medium loop formed by the compressor 11 and the on-board 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 its throttling function.

[0318] The working medium circulation path flows in order from the compressor 11, through the first pressure sensor 81, the first temperature sensor 82, the on-board capacitor 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 gas working medium flows from the exhaust of the compressor 11 through the third exhaust passage 10e to the on-board condenser 120. The working medium liquefies and releases heat in the on-board condenser 120. After being throttled and reduced in pressure through the fourth electronic expansion valve 64, the working medium 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] In the eighth embodiment, when the ambient temperature is high, 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, but the second heat exchange assembly 22 does not.

[0321] Under operating conditions where only the battery is heated, the working medium flows through the working medium 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 the throttling function, the second electronic expansion valve 62 blocks the piping, the third electronic expansion valve 63 opens the piping for the throttling function, and the fourth electronic expansion valve 64 is blocked. The parallel selector valve 58 opens the piping, and the series selector valve 57 blocks the series branch passage 10g.

[0322] The working medium circulation path, in order, flows out of the compressor 11, passes 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 medium 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, flows out of the first branch path, then passes 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 medium flows from the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working medium liquefies and releases heat in the first heat exchange assembly 21. After being throttled and reduced in pressure through the first electronic expansion valve 61 and the third electronic expansion valve 63, the working medium flows to the evaporator 140. The working medium absorbs heat and vaporizes in the evaporator 140, finally becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the first and second heat exchange plates realize the heating of the battery.

[0324] Embodiment 9 illustrates an operating condition where 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 medium flows through the working medium 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 to perform the throttling function, the third electronic expansion valve 63 opens the piping to perform the throttling function, and the fourth electronic expansion valve 64 is blocked. The parallel selector valve 58 opens the piping, and the series selector valve 57 blocks the series branch passage 10g.

[0326] The circulation path of the working medium is, in order, that the working medium flows out from the compressor 11, passes through the first pressure sensor 81, the first temperature sensor 82, and the first on-off valve 51, and flows into the first branch path and the second branch path, passes through the first sensor 31, the first heat exchange assembly 21, the second sensor 32, and the first electronic expansion valve 61, and flows out from the first branch path, passes through the parallel switching valve 58, the third sensor 33, the second heat exchange assembly 21, and the first electronic expansion valve 61, and flows out from the first branch path. The working medium flows through the assembly 22, the fourth sensor 34, and the second electronic expansion valve 62 to the second branch path, and then flows out of the second branch path. After the working medium flowing through the first branch path and the working medium flowing through the second branch path are mixed, the mixed working medium passes 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 flows back to the compressor 11.

[0327] The high-temperature, high-pressure gaseous working medium flows from the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working medium is liquefied in the first heat exchange assembly 21 and the second heat exchange assembly 22, respectively, and releases heat. After being throttled and reduced in pressure through the first electronic expansion valve 61, the second electronic expansion valve 62, and the third electronic expansion valve 63, the working medium flows to the evaporator 140. The working medium absorbs heat and vaporizes in the evaporator 140, finally becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the first and second heat exchange plates realize the heating of the battery.

[0328] Embodiment 10 illustrates an operating condition where 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 medium flows through the working medium 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 to perform the throttling function, the third electronic expansion valve 63 opens the piping to perform the throttling function, and the fourth electronic expansion valve 64 is blocked. The parallel selector valve 58 blocks the piping, and the series selector valve 57 opens the series branch passage 10g.

[0330] The working medium circulation path flows, in order, from the compressor 11, 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, and finally returns to the compressor 11.

[0331] The high-temperature, high-pressure gaseous working medium flows from the exhaust of the compressor 11 and through the second exhaust passage 10d to the battery heat exchange module. The working medium is liquefied and releases heat in the first heat exchange assembly 21 and the second heat exchange assembly 22. After being throttled and reduced in pressure through the first electronic expansion valve 61 and the third electronic expansion valve 63, the working medium flows to the evaporator 140. The working medium absorbs heat and vaporizes in the evaporator 140, finally becoming a low-temperature, low-pressure gaseous working medium that flows into the intake port of the compressor 11. In this way, the first and second heat exchange plates realize heating of the battery.

[0332] Embodiment 11 shows an operating condition where 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 medium flows through the working medium 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 their throttling functions, the third electronic expansion valve 63 blocks the piping, and the fourth electronic expansion valve 64 is blocked. The parallel selector valve 58 opens the piping, and the series selector valve 57 blocks the series branch passage 10g.

[0334] The circulation path of the working medium is configured such that, in order, the working medium flows out of the compressor 11, passes through the first pressure sensor 81, the first temperature sensor 82, and the first on-off valve 51, and then flows into the first branch path and the second branch path; the working medium flows through the first sensor 31, the first heat exchange assembly 21, the second sensor 32, and the first electronic expansion valve 61, and then flows out of the first branch path; the working medium then flows out of the first branch path, passes through the parallel switching valve 58, the third sensor 33, and then flows into the second branch path; , through the second heat exchange assembly 22, the fourth sensor 34, and the second electronic expansion valve 62 to the second branch, and then flows out of the second branch. After the working medium flowing in the first branch and the working medium flowing in the second branch are mixed, the mixed working medium passes 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 flows back to the compressor 11.

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

[0336] Embodiment 12 shows an operating condition in which the passenger compartment and the battery pack are heated simultaneously when the ambient temperature is high. In reality, Embodiment 12 corresponds to a condition in which Embodiment 6 and any one of Embodiments 8 to 10 operate simultaneously.

[0337] The foregoing embodiments are merely intended to facilitate and simplify the present disclosure and are not intended to indicate or imply that the thermal management system 100 can operate only in accordance with the examples shown in the embodiments under certain operating conditions, and therefore should not be construed as limitations on the present 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 10 a and the second main pipe 10 b.

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

[0340] The coolant flows through the first passage, and the working medium flows through the second passage. Both the first passage and the second passage are disposed in the fourth heat exchanger 71, and the first passage and the second passage 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 medium flowing through the first passage, the working medium 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 medium flowing through the first passage, the working medium releases heat as it passes through the fourth heat exchanger 71.

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

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

[0343] The high-pressure thermal management subsystem 201 may exchange heat with the air conditioning circulation loop 101, or the engine thermal management subsystem 202 may exchange heat with the air conditioning circulation loop 101, or both the high-pressure thermal management subsystem 201 and the engine thermal 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 selectively communicates with 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 power distribution / motor assembly 72 and a first radiator 73. The charging and power distribution / motor assembly 72 exchanges heat with the vehicle's motor and electronic controls, and the charging and power 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 an environment outside the vehicle.

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

[0347] The switching valve group 74 controls the flow direction of the coolant and can heat the working medium by utilizing the heat generated by the vehicle's motor and electronic control device, or can dissipate the heat generated by the vehicle's motor and electronic control device 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 disposed between the charging and power distribution / motor assembly 72 and the fourth heat exchanger 71. The water pump 75 is configured to push coolant from the charging and power distribution / motor assembly 72 to the fourth heat exchanger 71.

[0349] The high-pressure thermal management subsystem 201 has a first operating condition. In the first operating condition, the charging and power distribution / motor assembly 72 and the second passage form a first loop. Coolant flowing from 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 first passage of the fourth heat exchanger 71 in the second passage, 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] When the working medium circulation loop has a heat 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 a first operating condition. The high-temperature coolant flowing from the charging and power distribution / motor assembly 72 flows into the second passageway and exchanges heat with the low-temperature working medium flowing through the first passageway, transferring heat generated by the vehicle's motor and electronic control devices to the working medium circulation loop. In this manner, the heat generated by the vehicle's motor and electronic control devices 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 power distribution / motor assembly 72, the first radiator 73, and the second passage form a second loop. The 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 to the first radiator 73. After exchanging heat in the first radiator 73, 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.

[0352] When the working medium circulation loop has a heat 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 heat absorption requirement of the working medium circulation loop, the high-pressure thermal management subsystem 201 can operate according to a second operating condition. The high-temperature coolant flowing from the charging and power distribution / motor assembly 72 flows into the second passage and exchanges heat with the low-temperature working medium flowing through the first passage, transferring heat generated by the vehicle's motor and electronic control units to the working medium circulation loop. The coolant's 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 environment outside the vehicle a second time and dissipates heat. The heat generated by the vehicle's motor and electronic control units is effectively utilized, thereby improving the heating capacity of the thermal management system 100 and reducing its energy consumption.

[0353] Additionally, when the working medium circulation loop has a heat absorption requirement, the heat generated by the high-pressure thermal management subsystem 201 is insufficient, and the temperature of the coolant is lower than the temperature of the environment outside the vehicle, the high-pressure thermal management subsystem 201 can also operate according to a second operating condition. The coolant exchanges heat with the environment outside the vehicle in the first radiator 73, raising the temperature of the coolant. The coolant flows through the circulation loop to the charging and power distribution / motor assembly 72 and the fourth heat exchanger 71, where it exchanges heat with the low-temperature working medium flowing through the first flow path and transfers heat from the environment outside the vehicle to the working medium 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 a mixed operating condition. In the mixed operating condition, the first and second loops circulate simultaneously. The coolant flowing out of 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 first and second passages of the third heat exchanger 14, the coolant partially flows directly back to the charging and power distribution / motor assembly 72, exchanging heat with the vehicle's motor and electronic controls, 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 controls.

[0355] When the working medium circulation loop has a heat absorption requirement and the high-pressure thermal management subsystem 201 has a heat dissipation requirement, and the heat absorption requirement of the working medium circulation loop is higher than the heat dissipation requirement of the high-pressure thermal management subsystem 201, the high-pressure thermal management subsystem 201 can operate according to a mixed operating condition.

[0356] The hot coolant flowing from the charging and power distribution / motor assembly 72 enters the second passageway and exchanges heat with the cold working medium flowing through the first passageway, transferring heat generated by the vehicle's motor and electronic controls to the working medium circulation loop. A portion of the coolant that exchanges heat flows back to the charging and power distribution / motor assembly 72, while another portion of the coolant continues to the first radiator 73, where it exchanges heat a second time with the environment outside the vehicle 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 its energy consumption.

[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. Thus, the operation of the thermal management system 100 at different operating conditions may also be coordinated with the operation of the high-pressure thermal management subsystem 201 at different operating conditions.

[0358] For example, in an operating condition where only the passenger compartment is heated, the thermal management system 100 can cooperate with a first operating condition, a second operating condition, and a mixed operating condition 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 selectively communicates with 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 the engine assembly 77 is connected between the coolant circulation system and the second radiator 78. The second radiator 78 is configured to exchange heat with an environment outside the vehicle.

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

[0362] According to the vehicle 1000 in an embodiment of the present disclosure, the above-mentioned thermal management system 100 is provided, which can reduce the number of maintenance and battery replacements, improve charging efficiency and convenience of vehicle use, and facilitate rational layout of the vehicle.

[0363] In the description herein, references such as "one embodiment," "some embodiments," "general embodiment," "example," "particular example," or "some examples" mean that the particular features, structures, materials, or characteristics described with reference to an embodiment or example are included in the present disclosure or at least one embodiment or example of the present disclosure. In this specification, general references to such terms do not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more of the embodiments or examples.

[0364] While embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principle 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 System 200 Dynamic Thermal Management Subsystem 201 High-Pressure Thermal Management Subsystem 202 Engine Thermal Management Subsystem 300 Battery 301 Battery Core 301a Non-electrode heat generation temperature region 301b Electrode heat generation temperature region 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 flow path 10g serial branch 11 Compressor 12 First heat exchanger 120 Automotive Capacitor 13 Second heat exchanger 130 External capacitor 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 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 shut-off valve 52 Second shut-off valve 53 Third shut-off valve 54 Fourth shut-off valve 55 Fifth shut-off valve 56 6th 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 No. 5 Electronic Expansion Valve 66 No. 6 Electronic Expansion Valve 71 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. 1. A control method configured for a thermal management system, the control method comprising: acquiring a heat exchange signal; controlling at least one of a first trunk pipe in the thermal management system and a second trunk pipe in the thermal management system to exchange heat with a battery, the first trunk pipe configured to exchange heat with a first region within the battery and the second trunk pipe configured to exchange heat with a second region within the battery, the first region being different from the second region; A control method comprising:

2. the temperature of one of the first region and the second region is higher than the temperature of the other of the first region and the second region; Alternatively, the temperature increase rate of the first region is higher than the temperature increase rate of the second region. Alternatively, the first region is an electrode region of the battery, the method for controlling a thermal management system according to claim 1 .

3. When a first condition is satisfied, at least one of the first trunk line and the second trunk line is controlled to cool the battery; 2. The method of claim 1, wherein the first condition comprises at least one of: battery temperature >= a first temperature threshold; charge power >= a first power threshold; discharge power >= a second power threshold; charge voltage >= a first voltage threshold; discharge voltage >= a second voltage threshold; charge current >= a first current threshold; discharge current >= a second current threshold; or a user cooling command.

4. when a second condition is satisfied, at least one of the first trunk line and the second trunk line is controlled to heat the battery; 2. The method of claim 1, wherein the second condition comprises at least one of: 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.

5. The method of claim 1 , wherein the first main pipe and the second main pipe have different heat exchange parameters.

6. 6. The method for controlling a thermal management system according to claim 5, wherein the first heat exchange unit and the second heat exchange unit have different heat exchange parameters, the first heat exchange unit is configured to exchange heat with the first region and is disposed within the first main pipe, and the second heat exchange unit is configured to exchange heat with the second region and is disposed within the second main pipe.

7. The method of claim 5 , wherein the different heat exchange parameters comprise different heat exchange amounts or different heat exchange efficiencies.

8. The method of claim 5 , wherein the flow rate of the first trunk pipe and the flow rate of the second trunk pipe are different.

9. 9. The method of claim 8, wherein the pressure in the first main and the pressure in the second main are different, thereby causing the flow rates to differ.

10. When the third condition is satisfied, the heat exchange parameters of the first main pipe and the second main pipe are different. The method of claim 1 , further comprising:

11. The third condition is that the temperature rise rate V of the first region Ｈ ≧first rate threshold, or The difference V between the temperature rise rate of the first region and the temperature rise rate of the second region ０ ≧first temperature rise threshold, or The temperature T of the first region Ｈ and the temperature T of the second region Ｌ The difference T ０ ≧third temperature threshold, and T ０ =T Ｈ -T Ｌ The method of claim 10 , comprising:

12. The temperature T of the first region Ｈ is the maximum temperature of the battery, and the temperature T Ｌ The method of claim 11 , wherein: is the lowest temperature of the battery.

13. and cooling the battery by at least one of the first trunk pipe and the second trunk pipe when a fourth condition is met, wherein the heat exchange parameters of the first trunk pipe and the second trunk pipe are different. The method of claim 1 , further comprising:

14. The method of claim 13 , wherein the fourth condition comprises the battery temperature being equal to or greater than a fourth temperature threshold.

15. 15. The method of claim 13 or 14, wherein the fourth condition comprises at least one of: battery charging power >= a first threshold, battery discharging power >= a second threshold, or motor power >= a third threshold.

16. 15. The method of claim 13 or 14, wherein the fourth condition comprises at least one of the charging voltage >= a third voltage threshold or the discharging voltage >= a fourth voltage threshold.

17. 15. The method of claim 13 or 14, wherein the fourth condition comprises at least one of the charging current >= a fourth current threshold or the discharging current >= a fifth current threshold.

18. The method of claim 13 , wherein the fourth condition comprises at least one of an end of battery self-heating or a zone cooling command entered by a user.

19. 10. The method of claim 1, further comprising, when a fifth condition is met, heating the battery by at least one of the first main pipe and the second main pipe, wherein the heat exchange parameters of the first main pipe and the second main pipe are different.

20. 20. The method of claim 19, wherein the fifth condition comprises the battery temperature <= a fifth temperature threshold.

21. 20. The method of claim 19, wherein the fifth condition comprises at least one of: battery charging power≦a fourth threshold; or battery discharging power≦a fifth threshold.

22. 20. The method of claim 19, wherein the fifth condition comprises at least one of the discharge voltage < a fifth voltage threshold or the discharge current < a sixth current threshold.

23. 20. The method of claim 19, wherein the fifth condition comprises at least one of the charging voltage < a sixth voltage threshold, charging current < a seventh current threshold, or a zone heating command input by a user.

24. 24. The method of claim 1, wherein the first region is preferentially cooled, and 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 the electrode region of the battery and the second region of the battery is a non-electrode region of the battery.

25. 24. The method of claim 1, wherein the first region is preferentially cooled if a sixth condition is met.

26. 26. The method of claim 25, wherein the sixth condition comprises 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 >= the fourth temperature threshold, or the difference between the rate of temperature rise of the first region and the rate of temperature rise of the second region >= a first rate difference threshold and the battery temperature >= the fourth temperature threshold.

27. The first region is preferentially cooled, The flow rate of the heat exchange medium in the first trunk pipe is greater than the flow rate of the heat exchange medium in the second trunk pipe.

27. A method of controlling a thermal management system according to any one of claims 24 to 26, comprising:

28. 28. The method of claim 27, wherein a difference between the flow rate of the heat exchange medium in the first trunk pipe and the flow rate of the heat exchange medium in the second trunk pipe is >= a first flow rate threshold.

29. The first region is preferentially cooled, The temperature of the heat exchange medium at the inlet end of the first trunk pipe is lower than the temperature of the heat exchange medium at the inlet end of the second trunk pipe.

27. A method of controlling a thermal management system according to any one of claims 24 to 26, comprising:

30. The first region is preferentially cooled, the pressure at the outlet end of the first trunk is less than the pressure at the outlet end of the second trunk.

27. A method of controlling a thermal management system according to any one of claims 24 to 26, comprising:

31. 24. The method of claim 1, wherein the second region is preferentially heated, and 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 a non-electrode region of the battery.

32. 24. The method of claim 1, wherein the second region is preferentially heated when a seventh condition is met.

33. 33. The method of claim 32, wherein the seventh condition comprises the difference between the temperature of the first region and the temperature of the second region >= a second temperature difference threshold and the battery temperature <= the fifth temperature threshold, or the difference between the rate of temperature rise of the first region and the rate of temperature rise of the second region >= a second rate difference threshold and the battery temperature <= the fifth temperature threshold.

34. The second region is controlled to be heated preferentially, the flow rate of the heat exchange medium in the second trunk pipe is greater than the flow rate of the heat exchange medium in the first trunk pipe; 34. A method of controlling a thermal management system according to any one of claims 31 to 33, comprising:

35. 35. The method of claim 34, wherein a difference between the flow rate of the heat exchange medium in the second trunk pipe and the flow rate of the heat exchange medium in the first trunk pipe is >= a second flow rate threshold.

36. The second region is controlled to be heated preferentially, The temperature of the heat exchange medium at the inlet end of the second trunk pipe is higher than the temperature of the heat exchange medium at the inlet end of the first trunk pipe.

34. A method of controlling a thermal management system according to any one of claims 31 to 33, comprising:

37. 37. The method of claim 36, wherein a 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 a sixth threshold value.

38. The second region is preferentially heated, The pressure at the outlet end of the second trunk is greater than the pressure at the outlet end of the first trunk.

34. A method of controlling a thermal management system according to any one of claims 31 to 33, comprising:

39. 39. The method of claim 24, wherein the first region stops being preferentially cooled and / or the second region stops being preferentially heated when an eighth condition is met, wherein 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 a non-electrode region of the battery.

40. the eighth condition being that the temperature difference between the first region and the second region is less than a seventh threshold; or the rate of temperature rise of the first region and the second region is the same; or 40. The method of claim 39, comprising the difference in the rate of temperature rise of the first region and the second region being less than an eighth threshold.

41. A vehicle that implements the method for controlling a thermal management system according to any one of claims 1 to 40.

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