Immersed energy storage system and cooling adjustment method

Abstract

The invention relates to an immersed energy storage system and a cooling adjustment method. The system comprises a temperature detection unit, a control unit and an adjusting unit. A liquid inlet and a liquid outlet are formed in the same side wall of the box body, the box body is divided into a first box body cavity and a second box body cavity by an isolation assembly, the liquid inlet and the liquid outlet are located in different box body cavities, a runner hole is formed between the first box body cavity and the second box body cavity, and a cooling liquid runner is formed between the first box body cavity and the second box body cavity through the runner hole; the temperature detection unit is used for detecting the cell temperature of the battery module; the control unit is used for matching a current working mode jointly indicated by the battery cell temperatures for the adjusting unit and controlling the adjusting unit to be in the current working mode when it is determined that a target battery cell temperature larger than a preset battery cell temperature threshold exists in the battery cell temperatures; the adjusting unit is used for adjusting the cooling liquid circularly flowing in the cooling liquid flow channel in the current working mode. By adopting the system, the cooling adjustment effect of the battery pack can be improved.

Description

[0001] This application is a divisional application filed in connection with Application No.: CN202411345110.1 (Immersion Energy Storage System and Cooling Regulation Method, filing date: September 25, 2024). Technical Field

[0002] This application relates to the field of immersion energy storage technology, and particularly to an immersion energy storage system and a cooling regulation method. Background Art

[0003] With the continuous development of technology, in the field of energy storage, the immersion coolant technology has been widely used due to its high heat dissipation efficiency, high heat dissipation stability, and low heat dissipation cost. In conventional immersion coolant energy storage means, a cooling component is usually paired with a coolant to guide the coolant to circulate between the inlet and outlet of the battery pack to achieve battery cooling, such as liquid cooling plates or liquid cooling pipelines.

[0004] Currently, during the flow of the coolant in the battery pack, after the coolant enters the battery pack box through the inlet, the fixedly arranged cooling component guides the natural flow of the coolant immersed in the box, and finally discharges through the outlet. However, due to the large area of the coolant immersed in the battery pack box, the temperature difference of the coolant in different coolant immersion intervals is relatively large when the coolant slowly flows in the box, which in turn makes it easy to have a situation of flow dead zones in the coolant reflux or blockage areas. Therefore, the current cooling regulation effect of the battery pack is poor. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide an immersion energy storage system, method, computer device, and computer-readable storage medium that can improve the cooling regulation effect of the battery pack.

[0006] In a first aspect, this application provides an immersion energy storage system. The system includes a temperature detection unit, a control unit, and an adjustment unit installed in the battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Among them, the battery pack includes a box body, a plurality of battery modules, and an isolation component arranged in the box body. The box body and the isolation component are fixedly connected. Each of the battery modules is arranged at intervals in the box body. A coolant for immersing each of the battery modules is provided in the box body. Among them,

[0007] An inlet and an outlet are provided on the same side wall of the box body. The box body is separated into a first box body cavity and a second box body cavity by the isolation component. The inlet is located in the first box body cavity, and the outlet is located in the second box body cavity. There is a flow channel hole between the first box body cavity and the second box body cavity. A coolant flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole. The coolant circulates from the inlet to the outlet along the coolant flow channel;

[0008] The temperature detection unit is used to detect the core temperature of each battery module;

[0009] The control unit is configured to, when it is determined that there is a target core temperature greater than a preset core temperature threshold among the core temperatures, match the current working mode commonly indicated by the core temperatures for the adjustment unit, and control the adjustment unit to be in the current working mode;

[0010] The adjustment unit is used to adjust the coolant circulating in the coolant flow channel in the current working mode.

[0011] In a second aspect, the present application also provides an immersion energy storage method, which is applied to an immersion energy storage system. The system includes a temperature detection unit, a control unit, and an adjustment unit installed in a battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Among them, the battery pack includes a box body, a plurality of battery modules, and an isolation component arranged in the box body. The box body and the isolation component are fixedly connected. Each battery module is arranged at intervals in the box body. A coolant for immersing each battery module is arranged in the box body; among them,

[0012] An inlet and an outlet are provided on the same side wall of the box body. The box body is separated into a first box body cavity and a second box body cavity by the isolation component. The inlet is located in the first box body cavity, and the outlet is located in the second box body cavity. There is a flow channel hole between the first box body cavity and the second box body cavity. A coolant flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole. The coolant circulates from the inlet to the outlet along the coolant flow channel; The method includes:

[0013] Detect the core temperature of each battery module through the temperature detection unit;

[0014] When the control unit determines that there is a target core temperature greater than a preset core temperature threshold among the core temperatures, match the current working mode commonly indicated by the core temperatures for the adjustment unit, and control the adjustment unit to be in the current working mode;

[0015] Adjust the coolant circulating in the coolant flow channel in the current working mode through the adjustment unit.

[0016] In a third aspect, the present application further provides a computer device, which is applied to an immersion energy storage system. The system includes a temperature detection unit, a control unit, and an adjustment unit installed in a battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Among them, the battery pack includes a box body, a plurality of battery modules, and an isolation component disposed in the box body. The box body and the isolation component are fixedly connected. Each of the battery modules is arranged at intervals in the box body. A coolant for immersing each of the battery modules is provided in the box body. Among them, a liquid inlet and a liquid outlet are provided on the same side wall of the box body. The box body is separated into a first box body cavity and a second box body cavity by the isolation component. The liquid inlet is located in the first box body cavity, and the liquid outlet is located in the second box body cavity. There is a flow channel hole between the first box body cavity and the second box body cavity. A coolant flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole. The coolant circulates from the liquid inlet to the liquid outlet along the coolant flow channel. The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are implemented:

[0017] Detect the core temperature of each battery module through the temperature detection unit; when the control unit determines that there is a target core temperature greater than a preset core temperature threshold among the core temperatures, match the current working mode jointly indicated by the core temperatures for the adjustment unit, and control the adjustment unit to be in the current working mode; adjust the coolant circulating in the coolant flow channel in the current working mode through the adjustment unit.

[0018] Fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, which is applied to an immersion energy storage system. The system includes a temperature detection unit, a control unit, and an adjustment unit installed in a battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Wherein, the battery pack includes a box body, a plurality of battery modules, and an isolation component arranged in the box body. The box body and the isolation component are fixedly connected. Each battery module is arranged at intervals in the box body. A coolant for submerging each battery module is arranged in the box body. Wherein, a liquid inlet and a liquid outlet are arranged on the same side wall of the box body. The box body is separated into a first box body cavity and a second box body cavity by the isolation component. The liquid inlet is located in the first box body cavity, and the liquid outlet is located in the second box body cavity. There is a flow channel hole between the first box body cavity and the second box body cavity. A coolant flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole. The coolant circulates from the liquid inlet to the liquid outlet along the coolant flow channel. When the computer program is executed by a processor, the following steps are implemented:

[0019] Detect the core temperature of each battery module through the temperature detection unit; when it is determined by the control unit that there is a target core temperature greater than a preset core temperature threshold among the core temperatures, match the current working mode indicated by each core temperature for the adjustment unit, and control the adjustment unit to be in the current working mode; adjust the coolant circulating in the coolant flow channel by the adjustment unit in the current working mode.

[0020] Fifth aspect, the present application further provides a computer program product, including a computer program, which is applied to an immersion energy storage system. The system includes a temperature detection unit, a control unit, and an adjustment unit installed in a battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Wherein, the battery pack includes a box body, a plurality of battery modules, and an isolation component arranged in the box body. The box body and the isolation component are fixedly connected. Each battery module is arranged at intervals in the box body. A coolant for submerging each battery module is arranged in the box body. Wherein, a liquid inlet and a liquid outlet are arranged on the same side wall of the box body. The box body is separated into a first box body cavity and a second box body cavity by the isolation component. The liquid inlet is located in the first box body cavity, and the liquid outlet is located in the second box body cavity. There is a flow channel hole between the first box body cavity and the second box body cavity. A coolant flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole. The coolant circulates from the liquid inlet to the liquid outlet along the coolant flow channel. When the computer program is executed by a processor, the following steps are implemented:

[0021] Detect the cell temperatures of the battery modules through the temperature detection unit; when the control unit determines that there is a target cell temperature greater than the preset cell temperature threshold among the cell temperatures, match the current working mode jointly indicated by the cell temperatures for the adjustment unit, and control the adjustment unit to be in the current working mode; adjust the coolant circulating in the coolant flow channel by the adjustment unit in the current working mode.

[0022] In the above-mentioned immersion energy storage system and cooling adjustment method, a temperature detection unit, a control unit and an adjustment unit installed on the battery pack are deployed in the immersion energy storage system. Among them, the temperature detection unit is used to obtain the cell temperatures of multiple battery modules in the box body. The control unit is used to match the current working mode jointly indicated by the cell temperatures for the adjustment unit and control the adjustment unit to be in the current working mode when it is determined that there is a target cell temperature greater than the preset cell temperature threshold among the cell temperatures. The adjustment unit is used to adjust the coolant circulating in the coolant flow channel in the current working mode. Since the control unit can control the adjustment unit to work in the corresponding working mode according to the real-time cell temperatures of the battery modules in the battery pack box body, and the battery pack box body is separated into a first box body cavity and a second box body cavity by the isolation component, and there is a flow channel hole between the first box body cavity and the second box body cavity. Furthermore, through the spatial design of the battery pack box body, a directional coolant flow channel is formed in the box body between the liquid inlet and the liquid outlet on the same side wall of the battery pack box body, so that the coolant injected from the liquid inlet can flow naturally in the battery pack box body according to this coolant flow channel. At the same time, the coolant in the battery pack can circulate from the liquid inlet of the battery pack to the liquid outlet with a flow capacity stronger than the natural flow under the adjustment of the adjustment unit, that is, the purpose of alleviating the coolant temperature difference between different regions in the battery pack can be achieved by strengthening the turbulence intensity of the coolant. Further, since the battery modules are arranged at intervals in the box body, it is ensured that the surfaces of the battery cells in the battery pack can be fully wetted. Therefore, the coolant can be fully heat-exchanged through the specified coolant flow channel under the adjustment of the adjustment unit, and thus the technical defect that due to the large coolant immersion area in the battery pack box body, when the coolant flows slowly in the box body, the coolant temperature difference between different coolant immersion intervals is large, and thus it is easy to have a flow dead zone in the coolant return or blockage area can be overcome. Therefore, the adjustment effect of the battery pack cooling adjustment is improved. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the related art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the component modules of an immersion energy storage system in an embodiment;

[0025] Figure 2 Schematic diagram of the structure of a battery pack of an immersion energy storage system in an embodiment;

[0026] Figure 3 Schematic diagram of the flow direction of the coolant flow channel of an immersion energy storage system in an embodiment;

[0027] Figure 4 Schematic diagram of the composition structure of the isolation component of an immersion energy storage system in an embodiment;

[0028] Figure 5 Schematic diagram of the structure in which the first isolation component supports the battery module of an immersion energy storage system in an embodiment;

[0029] Figure 6 Schematic diagram of the composition structure of the regulation unit of an immersion energy storage system in an embodiment;

[0030] Figure 7 Schematic diagram of the flow chart of a cooling regulation method in an embodiment;

[0031] Figure 8 Internal structure diagram of a computer device in an embodiment. Detailed implementation manners

[0032] To facilitate the understanding of the present invention, the following will describe the present invention more comprehensively with reference to the related accompanying drawings. Embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] It will be understood that the terms "first", "second", etc. used in the present invention may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of the present invention, the first resistor may be referred to as the second resistor, and similarly, the second resistor may be referred to as the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0035] It will be understood that for "connection" in the following embodiments, if there is transmission of electrical signals or data between the connected circuits, modules, units, etc., it should be understood as "connected", "communicatively connected", etc.

[0036] It will be understood that "at least one" means one or more, and "a plurality" means two or more. "At least a part of an element" means part or all of the element.

[0037] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / comprising", "has / including", etc. specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0038] In an exemplary embodiment, as Figure 1 shown, a submersed energy storage system is provided, which system includes a temperature detection unit 11, a control unit 12, and a regulation unit 14 installed in a battery pack 13. The control unit 12 is communicatively connected to the temperature detection unit 11 and the regulation unit 14 respectively. Wherein, the battery pack 13 includes a box body 131, a plurality of battery modules 132, and an isolation component 133 disposed in the box body 131. The box body 131 and the isolation component 133 are fixedly connected. Each battery module 132 is spaced apart in the box body. A coolant 134 for submersing each battery module 132 is disposed in the box body 131. Wherein, a liquid inlet 21 and a liquid outlet 22 are disposed on the same side wall of the box body 131. The box body 131 is separated by the isolation component 133 into a first box body cavity 1331 and a second box body cavity 1332. The liquid inlet 21 is located in the first box body cavity 1331, and the liquid outlet 22 is located in the second box body cavity 1332. There is a flow channel hole 31 between the first box body cavity 1331 and the second box body cavity 1332. A coolant flow channel is formed between the first box body cavity 1331 and the second box body cavity 1332 through the flow channel hole. The coolant 134 circulates from the liquid inlet 21 to the liquid outlet 22 along the coolant flow channel.

[0039] It is understandable that energy storage systems are usually based on battery modules (battery clusters). Each battery module contains multiple battery packs, and multiple battery cells are connected in series in the battery pack. During the charging and discharging process of the battery cells, a large amount of heat will be generated in the battery pack. Since the natural heat dissipation capacity of the battery cells cannot maintain the temperature within the working range, the battery pack needs to be cooled in order to prevent thermal runaway, maintain battery performance and extend battery life. That is, the cooling is adjusted by an external cooling system. At present, the commonly used cooling adjustment methods are air cooling and liquid cooling. Among them, the liquid cooling adjustment method can have a more significant heat exchange capacity due to its full contact with the battery. Therefore, the current liquid cooling adjustment method is the mainstream method for cooling battery cells in energy storage systems.

[0040] In conventional technology, a liquid cooling plate or a liquid cooling group pipeline is usually arranged on the battery pack box, and then the coolant flows under the constraint of the liquid cooling plate or the liquid cooling pipeline, and exchanges paths after contacting the battery cells in the battery pack, or the battery pack box is filled with an insulating immersion cooling medium, wherein the insulating immersion cooling medium in the box can completely immerse the battery cells in the battery pack, so that the cooling medium can directly contact the battery cells for heat exchange. However, due to the large internal space area of ​​the box and the limitation of the coolant flow capacity, the above cooling adjustment methods will cause the battery pack to have uneven heat exchange problems in different areas, and the area in the battery pack where there is a lack of coolant flow will also cause the phenomenon of flow dead zone. Especially for battery packs with the inlet and outlet arranged on the same side wall of the box body, the area between the inlet and the outlet may form a flow dead zone during the temperature exchange process, resulting in uneven temperature control of the overall battery module in the battery pack. That is, the coolant enters the battery pack and flows. If the flow heat dissipation capacity is not considered inside the battery pack and the coolant flow channel is not arranged in a targeted manner, it will cause flow dead zones in the battery pack, poor heat exchange efficiency and large temperature differences of cooling media in different areas. It can be seen that the current internal cooling adjustment of the battery through the immersion liquid cooling system cannot control the temperature difference uniformity of the battery pack as a whole, that is, the current adjustment effect of the battery pack coolant is poor.

[0041] Among them, the temperature detection unit 11 refers to a temperature detection device for detecting the core temperature of each battery module, which can specifically be a temperature sensor, an infrared thermometer, etc. The number of temperature detection units 11 can be one or more. When the number of temperature detection units 11 is not equal to the number of battery modules 132, the temperature detected by the temperature detection unit 11 can represent the core temperature of any battery module 132 in the corresponding area. For example, in an implementable manner, assume that there are 6 battery modules, namely battery modules A, B, C, D, E, and F, and there are 3 temperature sensors, namely temperature sensors x, y, and z. Then, temperature sensor x can be used to detect the core temperature of battery modules A and B, temperature sensor y can be used to detect the core temperature of battery modules C and D, and temperature sensor z can be used to detect the core temperature of battery modules E and F. The installation position of the temperature sensor can be determined by the placement position of one or more battery modules it detects in the battery pack 13. It can be understood that the installation position of the temperature detection unit 11 in this embodiment is not specifically limited. The temperature detection unit 11 can be installed on the surface of the battery module 132 in the battery pack 13 or on the outer surface of the battery pack 13.

[0042] The control unit 12 refers to the control center of the immersion energy storage system, which is used to trigger the cooling adjustment of the immersion energy storage system. It can specifically be a control terminal, a controller, etc. Further, the control unit 12 can specifically be used to determine the magnitude relationship between each core temperature and the preset core temperature threshold, and when there is a target core temperature greater than the preset core temperature threshold among each core temperature, match the current working mode jointly indicated by each core temperature for the adjustment unit 14, and control the adjustment unit 14 to be in the current working mode. The preset core temperature threshold is set by the user according to needs. The target core temperature refers to the core temperature greater than the preset core temperature threshold. Since the control unit 12 is communicatively connected to the temperature detection unit 11, the control unit 12 can receive the core temperature of each battery module 132 transmitted by the temperature detection unit 11. It can be understood that the control unit 12 can periodically receive the core temperature of each battery module 132 detected by the temperature detection unit 11, or actively request to obtain the core temperature of each battery module 132 detected by the temperature detection unit 11. The core temperatures of different battery modules 132 can jointly reflect the real-time heat situation in the battery pack 13. When there is a target core temperature greater than the preset core temperature threshold in the battery pack 13, it indicates that there is an overheating phenomenon in the charging and discharging process of each battery module 132 in the battery pack 13. Therefore, it is necessary to start the cooling adjustment mechanism of this embodiment to adjust the core temperature of each battery module 132 in the battery pack 13. Among them, the target core temperature can specifically be one or more.

[0043] The adjustment unit 14 refers to a device for adjusting the flow capacity of the coolant 134. Specifically, it can be a guide impeller, a circulation pump, or an injector. It can be understood that the adjustment unit 14 directly acts on the coolant 134 that submerges each battery module 132. When the adjustment unit 14 is in the working state, the speed and direction of the circulating flow of the coolant 134 are changed, thereby enhancing the heat exchange capacity of the coolant 134. Eventually, the core temperature of each battery module 132 can be adjusted to be below the preset core temperature threshold. The adjustment unit 14 is communicatively connected to the control unit 12. Thus, the control unit 12 can control the current working mode of the adjustment unit 14. Among them, the working parameters of the adjustment unit 14 are different under different working modes. For example, in an implementable manner, assume that the adjustment unit 14 is a guide impeller, and the working modes include three working modes: first gear, second gear, and third gear. The rotation speeds of the guide impellers corresponding to different working modes are different. Thus, when it is determined that the adjustment unit needs to work, the core temperatures together indicate which working mode the guide impeller is in. For example, the control unit 12 can calculate the average value of each core temperature, and then use the average value of each core temperature as the real-time working temperature of the battery pack 13, and determine the temperature range in which the real-time working temperature is located. Finally, through the mapping relationship between the temperature range in which the real-time working temperature of the battery pack 13 is located and the working mode, the current working mode of the adjustment unit 14 is queried.

[0044] It can be understood that during the charging and discharging process of each battery module 132, if the control unit 12 detects that the core temperatures of each battery module 132 are all less than or equal to the preset core temperature, the real-time working temperature inside the battery pack 13 is controllable at this time, and the heat exchange effect will not be affected by the flow dead zone phenomenon. Thus, the adjustment unit 12 can be in the off mode. However, if the control unit 12 detects that there is at least one core temperature greater than the preset core temperature threshold among the core temperatures of each battery module 132, the battery pack 13 is overheated at this time. Thus, the control unit 12 controls the adjustment unit 14 to be in the working mode to enhance the heat exchange capacity of the coolant 134 by reducing the flow dead zone phenomenon inside the box body 131. Among them, the installation position of the adjustment unit 14 in the battery pack 13 is not limited in this embodiment, that is, the adjustment unit can be installed inside the box body 131 of the battery pack 13 or on the outer side wall of the battery pack 13.

[0045] The battery pack 13 refers to the structure for placing each battery module 132. The battery pack 13 is isolated from the external space through the box body 131. The battery pack 13 can be an integrated sealed structure. Refer to Figure 2 , Figure 2It is a schematic structural diagram of a battery pack, and can also be a detachable sealed structure composed of a box cover and a box seat. Among them, a liquid inlet 21 and a liquid outlet 22 are provided on the first side wall of the battery pack 13. The box body 41 and the box seat 42 are fixedly connected. For example, in an implementable manner, the box cover and the box seat are mechanically fixedly connected by bolts. The internal space of the box body 131 can place an isolation component 133 and each battery module 132. The isolation component 133 is used to isolate the box body 131 into a first box cavity 1331 and a second box cavity 1332. The liquid inlet 21 and the liquid outlet 22 located on the same side wall of the box body are isolated in different box cavities by the isolation component 133. It can be understood that the cavity volumes of the first box cavity 1331 and the second box cavity 1332 can be the same or different, specifically depending on the setting position of the isolation component 133. The isolation component 133 is fixedly connected to the side wall of the box body 131. The liquid inlet 21 and the liquid outlet 22 can be simultaneously arranged on any side wall of the box body. The relative position relationship between the liquid inlet 21 and the liquid outlet 22 is not specifically limited. For example, the liquid inlet 21 can be located above the liquid outlet 22, or the liquid inlet 21 can be located below the liquid outlet 22. The liquid inlet 21 and the liquid outlet 22 can be located on the same axis or not on the same axis.

[0046] In the existing energy storage system, the box body is not separated into different box body cavities by the isolation component 133, that is, the box body space is an integrated space. As a result, a liquid inlet and outlet flow channel will be formed between the liquid inlet 21 and the liquid outlet 22 located on the same side wall of the box body. Since the liquid inlet direction of the liquid inlet 21 and the direction of the liquid outlet 22 are completely opposite, blockage or flow dead zones will occur at the liquid inlet and outlet flow channel. At the same time, there is a flow channel hole 31 between the first box body cavity 1331 and the second box body cavity 1332. Therefore, the coolant 134 injected from the liquid inlet 21 can flow out from the liquid outlet 22 after fully circulating in the first box body cavity 1331 and the second box body cavity 1332. Among them, the flow channel hole 31 can be arranged on the isolation component 133. The isolation component 133 can be either an integrated sealing structure with the flow channel hole 31 or a splicing sealing structure with the flow channel hole 31. The number and arrangement method of the flow channel holes 31 arranged on the isolation component 133 are not specifically limited. For example, in an implementable manner, the isolation component 133 is an isolation plate with a circular through hole of a preset aperture size arranged at the central position. Among them, the area of the isolation plate is the same as the area of the side wall of the battery pack box body, and the circular through hole of the preset aperture size is the flow channel hole 31. Therefore, the coolant 134 forms a coolant flow channel in the battery pack 13 through the first box body cavity 1331, the second box body cavity 1332 and the flow channel hole 31. That is, the coolant 34 fully circulates in the first box body cavity 1331 and then converges at the flow channel hole 31, and fully circulates in the second box body cavity 1332 and then converges at the second box body cavity 1332. Therefore, a specified coolant flow channel is formed in the battery pack through the setting of the isolation component. Thus, when the regulating unit operates in the current working mode, the coolant can flow in the battery pack based on the specified coolant flow channel.

[0047] As an example, the coolant is injected into the first cavity of the battery pack through the liquid inlet provided on the side wall of the box body, and then flows based on the coolant flow path formed by the flow path holes provided in the isolation component between the first cavity and the second cavity. That is, first, it passes through the flow path of the first cavity from the liquid inlet and converges at the flow path holes, and then passes through the flow path of the second cavity from the flow path holes and converges at the liquid outlet provided on the same side wall of the box body as the liquid inlet. During this process, the temperature sensors are used to detect in real time the temperatures of the battery cores of different battery modules arranged at intervals in the box body, and send the temperatures of the battery cores of each battery module to the control terminal. Then, the control terminal determines the magnitude relationship between each battery core temperature and the preset battery core temperature threshold. Furthermore, when the control terminal determines that there is a target battery core temperature greater than the preset battery core temperature threshold among each battery core temperature, that is, when the control terminal determines that cooling adjustment of the battery pack is required, the average value of each battery core temperature is calculated and used as the real-time working temperature of the battery pack. In addition, the control terminal uses the temperature range where the real-time working temperature is located as an index to query the current working mode of the adjustment unit, and controls the adjustment unit to adjust from the initial working mode to the current working mode through the control terminal. Finally, when the adjustment unit works in the current working mode, it adjusts the coolant flowing in a cycle in the coolant flow path, where the adjustment unit and each battery module are located in the same cavity of the box body, that is, the adjustment unit and each battery module are both located in the first cavity or the second cavity.In this way, when any battery module in the battery pack overheats, the control unit can match and adjust the current working mode of the regulating unit, and the control unit controls the regulating unit to work in the current working mode. At the same time, when the regulating unit works in the current working mode, the coolant submerging the battery module in the battery pack can, under the action of the regulating unit, circulate along the coolant flow channel formed by the flow channel holes between the first box cavity and the second box cavity. Since the liquid inlet and the liquid outlet located on the same side wall of the box are respectively located in different box cavities of the battery pack box body, through the design of the internal space structure of the battery pack box body, the coolant can fully circulate along the coolant flow channel with a flow direction in the box space of the battery pack. At the same time, the coolant in the battery pack can, under the regulation of the regulating unit, circulate from the liquid inlet of the battery pack to the liquid outlet with a flow capacity stronger than natural flow, so as to achieve the purpose of alleviating the coolant temperature difference between different regions in the battery pack by strengthening the turbulence intensity of the coolant. Further, since the battery modules are arranged at intervals in the box body, it is ensured that the surfaces of the battery cells in the battery pack can be fully wetted. Therefore, the coolant can be fully heat-exchanged through the specified coolant flow channel under the regulation of the regulating unit, and thus the technical defect that, due to the large coolant immersion area in the battery pack box body, when the coolant slowly flows in the box body, the coolant temperature difference between different coolant immersion intervals is large, and thus it is easy to have a flow dead zone in the coolant return or blockage area can be overcome. Therefore, the regulation effect of the battery pack cooling regulation is improved.

[0048] In an exemplary embodiment, the regulating unit is fixed in the first box cavity, each battery module is placed in the second box cavity, and the flow channel holes are arranged on the isolation component; wherein,

[0049] The liquid inlet 21 and the liquid outlet 22 are located on the first side wall of the box body. The first distance between the flow channel holes and the first side wall of the box body 131 is less than the second distance between the flow channel holes and the second side wall. The first side wall and the second side wall are opposite to each other. The coolant 134 circulates along the first main flow channel arranged in the first direction in the first box body. The coolant 134 circulates along the second main flow channel arranged in the second direction between the first box cavity and the second box cavity. The coolant 134 circulates along the third main flow channel arranged in the third direction in the second box cavity. The first direction, the second direction and the third direction are different from each other. The first main flow channel, the second main flow channel and the third main flow channel jointly form the coolant flow channel. Refer to Figure 3 , Figure 3 For showing the flow direction schematic diagram of the coolant flow channel, wherein, 51 is the first direction, 52 is the second direction, and 53 is the third direction.

[0050] When the regulating unit 14 and each battery module 132 are both disposed in the internal space of the battery pack 13, the regulating unit 14 can more directly change the flow capacity of the coolant. Then, considering the utilization rate of the internal space of the battery pack 13, the regulating unit 14 and each battery module 132 can be disposed in different box cavities of the battery pack 13. Among them, the regulating unit 14 is fixed to the first box cavity 1331, and each battery module 132 is placed at intervals in the second box cavity 1332. The specific fixed connection method between the regulating unit 14 and the first box cavity 1331 can be connection methods such as welding or bolt connection. The placement form of each battery module 132 in the second box cavity 1332 is not specifically limited in this embodiment. For example, each battery module 132 can be placed in rows, columns, or rows and columns in the second box cavity. The flow channel holes are provided on the isolation component. For example, in an implementable manner, the first box cavity 1331 and the second box cavity 1332 isolated by the isolation component 133 are distributed left and right based on the horizontal plane. Among them, the left side is the first box cavity 1331, and the right side is the second box cavity 1332. The isolation component 133 is an isolation plate spanning between the first box cavity 1331 and the second box cavity. Among them, the isolation component 133 is parallel to the first side wall of the box body 131, and the first side wall and the second side wall are opposite to each other. That is, the isolation plate is parallel to the first side wall and parallel to the second side wall.

[0051] It can be understood that the flow channel length of the coolant 134 in different box cavities depends on the distance between the flow channel holes provided on the isolation component 133 and the box body side wall. To ensure that the coolant can circulate fully in different box cavities, when setting the flow channel holes 31 on the isolation component 133, the relative position relationship between the flow channel holes 31 and the liquid inlet 21 and the liquid outlet 22 needs to be considered. That is, the first distance between the flow channel holes 31 and the second side wall is less than the second distance between the flow channel holes 31 and the first side wall. For example, in an implementable manner, assuming that the isolation component 133 is an isolation plate, there is one flow channel hole 31 provided on the isolation plate. The isolation plate is parallel to the first side wall of the box body and parallel to the second side wall. Among them, the first perpendicular distance between the isolation plate and the first side wall is greater than the second perpendicular distance between the isolation plate and the second side wall. That is, one flow channel hole 31 on the isolation plate is provided at the far end of the liquid inlet 21 and the liquid outlet 22. Then, there is a sufficient flow channel length in both the first box cavity 1331 and the second box cavity 1332 for the coolant 134 to circulate fully.

[0052] The coolant flow channels inside the battery pack 13 are jointly composed of a first main flow channel, a second main flow channel, and a third main flow channel. Among them, the first main flow channel is the flow channel where the coolant 134 is arranged in the first direction within the first box cavity 1331, the second main flow channel is the flow channel where the coolant 134 is arranged in the second direction between the first box cavity 1331 and the second box cavity 1332, and the third main flow channel is the flow channel where the coolant 134 is arranged in the third direction between the second box cavities 1332. It can be understood that the length of the second main flow channel depends on the thickness of the separator plate, and the lengths of the first main flow channel and the third main flow channel both depend on the second distance. The first direction, the second direction, and the third direction are all different. Among them, the first direction and the third direction are opposite, and the second direction is different from the first direction and different from the third direction. For example, in an implementable manner, the first direction is perpendicular to the bottom wall of the battery pack and downward, the second direction is parallel to the horizontal plane where the bottom wall of the battery pack is located, and the third direction is perpendicular to the bottom wall of the battery pack and upward.

[0053] As an example, the coolant is injected into the first box cavity of the battery pack through the liquid inlet provided on the side wall of the box. Among them, an adjustment unit is fixedly installed in the first box cavity. Then, based on the coolant flow channels formed by the flow holes provided in the isolation component between the first box cavity and the second box cavity, the coolant flows. Among them, the flow holes are arranged at the far ends of the liquid inlet and the liquid outlet. Then, the coolant flowing through the flow channels of the second box cavity converges at the liquid outlet provided on the same side wall of the box as the liquid inlet through the flow holes. Among them, each battery module is immersed and arranged at intervals in the second box cavity. During this process, the core temperatures of different battery modules in the second box cavity are detected in real time through temperature sensors, and the core temperatures of each battery module are sent to the control terminal. Then, through the control terminal, the magnitude relationship between each core temperature and the preset core temperature threshold is determined. Then, when it is determined through the control terminal that there is a target core temperature greater than the preset core temperature threshold among each core temperature, that is, when it is determined through the control terminal that the battery pack needs to be cooled and adjusted, the average value of each core temperature is statistically calculated and used as the real-time working temperature of the battery pack. And through the control terminal, taking the temperature range where the real-time working temperature is located as an index, the current working mode of the adjustment unit is queried, and the control terminal controls the adjustment unit to be adjusted from the initial working mode to the current working mode. Finally, when the adjustment unit works in the current working mode, the coolant flowing in the coolant flow channels is adjusted to circulate.

[0054] In this embodiment, by spatially isolating the regulating unit and each battery module in different box cavities of the battery pack, the technical defects that the heat exchange uniformity between different regions where each battery module is placed is poor when the regulating unit is in the current working mode and the regulating unit occupies the placement and arrangement space of each battery module are avoided. At the same time, for the flow channel holes provided on the isolation component, they are arranged on the side away from the side walls where the liquid inlet and the liquid outlet are located, so that the coolant has sufficient flow channel length for circulating flow in different box cavities of the battery pack. Therefore, during the process of the coolant injected from the liquid inlet circulating through three main channels with different directions designed inside the battery pack, the time for the coolant to exchange heat with each battery module can be increased, and each battery module is located in the same box cavity, which can ensure the heat dissipation uniformity of the coolant for different battery modules. Therefore, in addition to avoiding the situation of flow dead zones in the coolant reflux or blockage areas, the regulating effect of the battery pack cooling regulation is further improved from the dimension of heat exchange capacity.

[0055] In an exemplary embodiment, any one of the battery modules 132 includes a plurality of battery cells, and the battery cells are arranged at intervals; wherein,

[0056] The third main channel includes a first shunt channel formed by the gaps between the battery modules 132, a second shunt channel formed by the gaps between the battery cells, and a third shunt channel formed on the tops of the battery cells. Among them, the flow directions of the first shunt channel and the second shunt channel are perpendicular to each other, and the flow directions of the first shunt channel and the third shunt channel are parallel to each other.

[0057] It should be noted that the battery module is composed of a plurality of battery cells. The spaced arrangement of different battery modules in the second box cavity can, to a certain extent, make the coolant flowing in the battery pack infiltrate the outer surfaces of the battery cells. However, there may be no gap between adjacent battery cells in the same battery module, so that the circulating coolant cannot infiltrate. Therefore, to ensure that the battery cells in the battery module can be fully infiltrated, a specific shunt channel design can be carried out in the second box cavity where each battery module is placed. That is, first, the battery cells in the battery module are arranged at intervals. Since the battery modules in the second box cavity are also arranged at intervals, gaps are ensured to be left between the battery cells in the battery pack and between the battery cells and the inner wall of the battery pack box. The coolant flowing into the second box cavity through the flow channel holes forms different shunt channels through different gaps, and after flowing through different battery cells in the second box cavity through the shunt channels, it converges at the liquid outlet, thus completing the heat exchange of different battery cells in the second box cavity.

[0058] The third main flow channel is jointly composed of a first sub-flow channel, a second sub-flow channel, and a third sub-flow channel. Among them, the number of flow channels of the first sub-flow channel is determined by the number of modules in the battery module. For example, when the number of modules in the battery module is two, a first sub-flow channel is formed between the battery modules. There are various types of the second sub-flow channel, and the flow direction of the second sub-flow channel is not specifically limited in this embodiment. For example, the flow direction of the second sub-flow channel can be parallel to the preset horizontal direction, perpendicular to the preset horizontal direction, or at a certain angle to the preset horizontal direction.

[0059] As an example, after the coolant flows into the second box cavity through the second main flow channel between the first box cavity and the second box cavity, the coolant respectively forms a plurality of first sub-flow channels with a horizontal flow direction through the gaps between the battery modules, a plurality of second sub-flow channels with a longitudinal flow direction through the gaps between the battery cells, and a plurality of third sub-flow channels with a horizontal flow direction formed on the top of the battery cells, and circulates to the liquid outlet on the first side wall of the second box cavity. Among them, the first sub-flow channel and the third sub-flow channel are located in different spaces of the second box cavity, and the flow directions of the first sub-flow channel and the third sub-flow channel are parallel and the same.

[0060] In this embodiment, during the process of the regulating unit regulating the circulation of the coolant in the coolant flow channel in the current working mode, when the coolant circulates through the first box cavity and the flow channel hole to the second box cavity, the coolant is dispersed and flows through the first sub-flow channel, the second sub-flow channel, and the third sub-flow channel that make up the third main flow channel, thereby ensuring that the coolant flowing through different sub-flow channels can fully wet each battery module placed in the second box cavity, and a directional third main flow channel designed in the second box cavity can be realized, enhancing the heat exchange capacity of the coolant in the second box cavity, and further improving the regulation effect of the battery pack cooling regulation by increasing the direct contact area between the coolant and each battery cell of the battery module.

[0061] In an exemplary embodiment, the isolation assembly 133 includes a first isolation member 61 and a second isolation member 62. The box body 131 is fixedly connected to the first isolation member 61, and the second isolation member 62 is detachably connected to the box body 131 and the first isolation member 61 respectively. The flow channel hole is formed by inlaying the second side wall and the first isolation member; among them,

[0062] The first isolation member 61 is used to isolate each battery module 132 and the regulating unit 14, and the second isolation member is used to isolate the box body 131 and the external space.

[0063] It should be noted that when there are cell failures, damages or performance degradations in each battery module within the battery pack, it is necessary to replace the cells with abnormal working performance. Therefore, in order to facilitate the loading and unloading of the cells, when designing the box seat of the battery pack, a contactable space between the inside and the outside of the box can be reserved. At the same time, to adapt to different design requirements for the liquid inlet and outlet provided on the battery pack box body, different types of isolation components need to be set in the isolation assembly to ensure that the coolant still flows in a directional coolant flow path inside the battery pack. For example, in an implementable manner, the isolation assembly is composed of a first isolation component and a second isolation component. Among them, the first isolation component is used to isolate the internal space of the battery pack box into a non-hermetic first box cavity and a second box cavity. Among them, an adjustment unit is fixed in the first box cavity, and each battery module is placed in the second box cavity. It can be understood that in order to enable the coolant in the first box cavity and the second box cavity to flow naturally, a flow channel hole needs to be provided between the first box cavity and the second box cavity. Considering the complexity of the processing technology, the flow channel hole can be formed by the structural coupling between the first isolation component and the second side wall of the battery pack box body, that is, a notch is reserved on the first isolation component, and the notch side is placed away from the first side wall, and the first isolation component is fixedly connected to the first side wall and the second side wall of the box respectively, so that at the end far from the liquid inlet and outlet, a flow channel hole is formed by the inlay of the first isolation component and the second side wall, ensuring that the coolant between the first box cavity and the second box cavity can flow normally. In addition, the second isolation component is used to isolate the internal space and the external space of the box. The second isolation component can specifically be an upper baffle, and the second isolation component is detachably connected to the box body, that is, when the cells of each battery module can work normally, the isolation assembly composed of the first isolation component and the second isolation component can ensure that the coolant still flows in a directional coolant flow path from the liquid inlet to the liquid outlet. When the cells of each battery module need to be replaced, by disassembling the second isolation component, the cells of each battery module can be directly exposed to the external space, so as to facilitate the direct replacement of the cells. Among them, the detachable connection method between the second isolation component and the box body can specifically be a detachable connection method fixed by bolts, referring to Figure 4 , Figure 4 To show the schematic diagram of the composition structure of the isolation assembly, among them, 61 is the first isolation component, which can specifically be a support structure, and 62 is the second isolation component, which can specifically be a front baffle.

[0064] As an example, the liquid inlet and the liquid outlet are arranged on the top wall of the battery pack. When designing the internal structure of the battery pack box, a partition plate with a rectangular notch reserved in the short axis direction can be designed and vertically fixed on the battery pack box body through the partition plate. Among them, the overall area of the partition plate is smaller than the side wall area of the battery pack box body, and the short axis of the reserved rectangular notch fits the bottom wall of the battery pack. Furthermore, when the coolant in the first box cavity flows to the second box cavity, it can be realized through the rectangular flow channel hole formed by the inlay of the bottom wall of the battery pack and the first isolation component. In addition, the top surface of the battery pack is composed of a second isolation component, the "upper baffle", which is detachably fixedly connected to the box seat of the battery pack, so as to facilitate the disassembly of the second isolation component for replacing the battery cells placed in the second box cavity.

[0065] In this embodiment, by setting isolation components with different functions for the internal structure design of the battery pack, while isolating the internal space of the battery pack from the external space, it is ensured that there are still inlaid flow channel holes and a coolant flow channel for the coolant to flow directionally in the internal structure of the battery pack. That is, during the normal charging and discharging process of the battery cells in each battery module, through the flow channel holes formed by the inlay of the first isolation component and the inner side wall of the battery pack box body, the coolant can be fully heat-exchanged through the specified coolant flow channel under the adjustment of the adjustment unit, thereby improving the adjustment effect of the battery pack cooling adjustment. At the same time, when the battery cells in each battery module cannot be normally charged and discharged, the purpose of flexibly replacing the battery cells can be achieved by disassembling and installing the second isolation component.

[0066] In an exemplary embodiment, the first isolation component includes a first support plate and a second support plate arranged at intervals. The first support plate is fixedly connected to the third side wall of the box body, and the third side wall is adjacent to the first side wall and the second side wall. One end of the second support plate is fixedly connected to the isolation component and the first side wall respectively, and the other end of the second support plate extends along a preset direction to the second side wall and is fixedly connected. Each battery module includes a first battery module and a second battery module; among them, the first battery module is supported by the first support plate and the second support plate together, the second battery module is supported by the second support plate, the flow channel holes include a first main flow channel hole and a second main flow channel hole, the first main flow channel hole is formed by the inlay of the first support plate, the bottom wall of the first battery module, the second support plate and the second side wall together, and the second main flow channel hole is formed by the inlay of the second support plate, the bottom wall of the second battery module and the second side wall.

[0067] It should be noted that to meet the design requirements of having the liquid inlet and outlet on different sidewalls of the battery pack, in addition to achieving the isolation function, the isolation component needs to provide other functions. For example, when the liquid inlet and outlet on the same sidewall of the battery pack need to be isolated longitudinally, the internal space of the battery pack housing needs to be isolated into a first housing cavity in the lower half and a second housing cavity in the upper half. At this time, in addition to providing the isolation ability of the internal space of the battery pack, the isolation component also needs to provide a support ability. That is, the first isolation component can specifically be a support plate, and each battery module located in the second housing cavity is placed on the support plate. Further, to ensure that the coolant can fully wet the surface of the battery cells during the flow process, the first isolation component can be designed to be composed of different types of support plates. Among them, different types of support plates are arranged at intervals to ensure that there is a certain surface area for the surface of the battery cell in contact with the support plate to wet the coolant. The area of the coolant wetting the surface of the battery cell in contact with the support plate is determined by the interval between the first support plate and the second support plate. The first support plate can specifically be a "right-angle type" plate, and the second support plate can specifically be an "I-shaped" plate to provide high support strength. Refer to Figure 5 , Figure 5 FIG. shows a schematic structural view of the first isolation component supporting the battery module, where 611 is the first support plate, 612 is the second support plate, 1321 is the first battery module, and 1322 is the second battery module.

[0068] It can be understood that, considering the deployment cost of the first isolation component, based on the placement position relationship between the battery module and the support plate, a flow channel hole can be jointly formed by inlaying the surface where the battery cell contacts the support plate, the side wall of the box body, and the support plate. Among them, the placement position relationship between the battery module and the support plate can specifically include a first placement position relationship where the battery module is placed between the first support plate and the second support plate, and a second placement position relationship where the battery module is placed between different second support plates. The battery modules placed in different placement position relationships are distinguished as the first battery module and the second battery module. That is, the first battery module is supported by the first support plate and the second support plate together, and the second battery module is supported by the second support plate. Furthermore, a first main flow channel hole and a second main flow channel hole of different types are formed in the first box body cavity and the second box body cavity. Among them, the first main flow channel hole is jointly inlaid by the first support plate, the bottom of the first battery module, the second support plate, and the second side wall, and the second main flow channel hole is jointly inlaid by the second support plate, the bottom wall of the second battery module, and the second side wall. Furthermore, the coolant between the first box body cavity and the second box body cavity can circulate through the first main flow channel hole and the second main flow channel hole. Among them, the first support plate is fixedly connected to the third side wall of the box body. The third side wall is the side wall connecting the first side wall and the second side wall inside the box body, and the third side wall is adjacent to the first side wall and the second side wall respectively. One end of the second support plate is fixedly connected to the isolation component and the first side wall respectively, and the other end of the second support plate extends along a preset direction to the second side wall and is fixedly connected.

[0069] In this embodiment, when designing the first isolation component, by arranging the first support plate and the second support plate at intervals, the first support plate and the second support plate complete the isolation of the liquid inlet and the liquid outlet, and the support of each battery module, and form a first main flow channel hole jointly inlaid by the first support plate, the bottom wall of the first battery module, the second support plate, and the second side wall in the internal space of the battery pack, and form a second main flow channel hole jointly inlaid by the second support plate, the bottom wall of the second battery module, and the second side wall. Thus, it can be realized that a coolant flow channel with directional flow is formed inside the battery pack box body through the first main flow channel hole and the second main flow channel hole. At the same time, the interval arrangement between the first support plate and the second support plate can ensure that the surface where the battery cell contacts the support plate is wetted by the coolant circulating inside the battery pack. That is, the purpose of ensuring that the battery cells of each battery module placed in the second box body cavity are all wetted by the coolant can be realized. Therefore, the adjustment effect of the battery pack cooling adjustment is further improved.

[0070] In an exemplary embodiment, the battery pack further includes a filling component. The filling component is streamlined and is fixed in the first box body cavity. The first central position of the filling component and the second central position of the flow channel hole are located on the same straight line; among them,

[0071] The fixing direction of the filling component in the first box cavity is parallel to the flow direction of the flow channel hole. There is a gap between the filling component and the isolation component. The filling component is used to guide the coolant flowing in the first box cavity to the flow channel hole.

[0072] It should be noted that, in order to reduce the filling amount of the coolant in the first box cavity, a filling component can be arranged in the first box cavity. The filling component is fixedly arranged in the first box cavity. Specifically, the filling component can be a convex filling structure. Further, the filling component is designed to be streamlined and symmetrically arranged with the flow channel hole, so as to reduce the convergence area of the first box cavity at the flow channel hole, and to accelerate the flow rate of the coolant flowing from the first box cavity into the second box cavity. The first central position of the filling component and the second central position of the flow channel hole are located on the same straight line. Specifically, the centroid of the filling component and the hole center of the flow channel hole are located on the same axis. The fixing direction of the filling component in the first box cavity is parallel to the flow direction of the flow channel hole. There is a gap between the filling component and the isolation component, that is, it is ensured that the filling component is fixed directly below the flow channel hole in the first box cavity, and the coolant in the first box cavity can flow into the flow channel hole through the gap between the filling component and the isolation component, so as to normally circulate and flow into the second box cavity. The filling component can be used to guide the coolant in the first box cavity to the flow channel hole between the first box cavity and the second box cavity. The gap height between the filling component and the isolation component is greater than the thickness of the isolation component, so that the coolant flow rate per unit area directly below the flow channel hole is greater than the coolant flow rate through the flow channel hole.

[0073] In this embodiment, by fixedly arranging a filling component with a guiding function in the first box cavity, while reducing the filling amount of the coolant in the first box cavity, it can guide the coolant in the first box cavity to flow into the flow channel hole at a faster speed when the regulating unit works. Therefore, while further improving the regulating effect of the battery pack cooling regulation, the regulating cost of the battery pack cooling regulation is reduced.

[0074] In an exemplary embodiment, the regulating unit includes a first guide impeller and a second guide impeller. The first guide impeller and the second guide impeller are symmetrically installed on both sides of the center line of the placement axis corresponding to each battery module. The center line of the placement axis is perpendicular to the placement direction of each battery module.

[0075] It should be noted that when the adjustment unit operates in different working modes, through specific setting of the adjustment unit position, the convection effect of the coolant in the first box cavity and the second box cavity can be improved. At the same time, the setting of multiple guide impellers can reduce the working duration of the guide impellers, thereby improving the working flexibility of the adjustment unit. For example, in an implementable manner, in the first preset period, the coolant circulating in the coolant flow channel can be adjusted by the first guide impeller alone in the current working mode. In the second preset period, the coolant circulating in the coolant flow channel can be adjusted by the second guide impeller alone in the current working mode. In the third preset period, the coolant circulating in the coolant flow channel can be adjusted by the first guide impeller and the second guide impeller together in the current working mode. Among them, the placement axis center line can specifically be the axis where the placement center is located, and the placement axis center line is perpendicular to the placement direction of each battery module. For example, in an implementable manner, each battery module is horizontally arrayed in the second box cavity, then the placement axis center line is the perpendicular line of the placement center point of the horizontal array placement, referring to Figure 6 , Figure 6 FIG. Figure 6 is a schematic diagram showing the composition structure of the adjustment unit. Among them, 31 marked in the figure is the first guide impeller, and 32 is the second guide impeller.

[0076] In this embodiment, the adjustment unit composed of the first guide impeller and the second guide impeller is symmetrically arranged on both sides of the placement axis center line jointly indicated by each battery module, and the working state of the first guide impeller and / or the second guide impeller can be adapted to the current working mode of the adjustment unit, thereby reducing the working duration or working load of the first guide impeller and / or the second guide impeller. At the same time, the first guide impeller and the second guide impeller arranged at different positions can also improve the coolant convection ability at the corresponding positions of the second box cavity. Therefore, while further improving the adjustment effect of the battery pack cooling adjustment, this embodiment improves the working life of the adjustment unit.

[0077] In an exemplary embodiment, the battery pack further includes a flow channel hole valve. The flow channel hole valve is fixedly installed on the first isolation component, and one flow channel hole corresponds to one flow channel hole valve. Among them, the flow channel hole valve includes a first flow channel hole valve and a second flow channel hole valve. The first flow channel hole valve is used to open and close the first main flow channel hole, and the flow channel hole valve is used to open and close the second main flow channel hole. The first opening degree of the first flow channel hole valve is smaller than the second opening degree of the second flow channel hole valve.

[0078] It should be noted that when the adjustment unit adjusts the coolant flowing in a cycle in the coolant flow path in the current working mode, a corresponding flow path hole valve can be set near the flow path hole. The control unit controls the flow path hole valve to have different opening degrees when the adjustment unit performs cooling adjustment in different working modes. It can be understood that when the temperature of the single cell in the second box cavity is too high, for any flow path hole valve, increasing the opening degree of the flow path hole valve can increase the amount of coolant flowing in a cycle through the flow path hole corresponding to the flow path hole valve. Among them, the opening and closing states of multiple flow path hole valves are also determined by the working mode of the adjustment unit. For example, in an implementable manner, assuming that there are 5 flow path holes and 5 flow path hole valves, when the control unit controls the adjustment unit to be in working mode 1, the five flow path hole valves can be synchronously controlled to be in the open state. When the control unit controls the adjustment unit to be in working mode 2, any three of the five flow path hole valves can be synchronously controlled to be in the open state, and the other flow path hole valves are in the closed state. When the control unit controls the adjustment unit to be in working mode 3, any one of the five flow path hole valves can be synchronously controlled to be in the open state, and the other flow path hole valves are in the closed state. It can be understood that the opening priority of the first flow path hole valve is greater than that of the second flow path hole valve, that is, if only one type of flow path hole valve needs to be in the open state to adapt to the working mode of the adjustment unit, the first flow path hole valve is made to be in the open state. If two types of flow path hole valves need to be in the open state, both the first flow path hole valve and the second flow path hole valve are made to be in the open state, and the first opening degree of the first flow path hole valve is greater than the second opening degree of the second flow path hole valve.

[0079] It should be noted that when designing the installation of the flow path hole valve on the first isolation component, the flow path hole valve can be installed on one side of the second box cavity or on one side of the first box cavity. It can be understood that when the flow path hole valve is installed on the first box cavity side, the gap between the filling component and the first isolation component needs to consider the space occupied by the flow path hole valve to ensure that there is always a gap for the coolant to flow through the flow path hole between the first box cavity and the second box cavity during the opening and closing process of the flow path hole valve. When the flow path hole valve is installed on the second box cavity side, the installation space of the flow path hole valve needs to be reserved when arranging each battery module.

[0080] As an example, when the control unit matches the current working mode jointly indicated by the temperatures of each cell for the adjustment unit, it synchronously queries the flow path hole valve setting strategy matched in the current working mode. Then, when controlling the adjustment unit to be in the current working mode, it synchronously adjusts the opening and closing states of each flow path hole valve according to the flow path hole valve setting strategy. Among them, the flow path hole valve setting strategy includes the opening and closing relationship between the first flow path hole valve and the second flow path hole valve and the opening degree of the flow path hole valve in the open state, etc.

[0081] In this embodiment, by fixedly installing a flow channel hole valve on the first isolation component in the battery pack, when there are multiple flow channel holes between the first box cavity and the second box cavity, the working quantity and working state of the flow channel hole valve are adjusted in real time based on the current working mode of the adjustment unit, so as to achieve the purpose of controlling the flow rate of the coolant circulating between the first box cavity and the second box cavity through the flow channel holes. That is, the coolant flow rate of the flow channel holes is adjusted in real time based on the working mode of the adjustment unit, avoiding the sudden drop in the core temperature due to excessive coolant flow rate. Therefore, while laying a foundation for improving the adjustment effect of the battery pack cooling adjustment, the stability of the battery pack cooling adjustment is improved.

[0082] In an exemplary embodiment, referring to Figure 7 , a cooling adjustment method is provided. In this embodiment, it is exemplified that the method is applied to a terminal. Among them, the terminal can be, but is not limited to, a personal computer, a laptop computer, a smart phone, a tablet computer, an Internet of Things device, and a portable wearable device. The Internet of Things device can be a smart speaker, a smart TV, a smart air conditioner, a smart vehicle-mounted device, a projection device, etc. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. It can be understood that this method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is realized through the interaction between the terminal and the server. In this embodiment, an immersion energy storage system is deployed on the terminal. The cooling adjustment system includes a temperature detection unit, a control unit, and an adjustment unit installed in the battery pack. The control unit is communicatively connected to the temperature detection unit and the adjustment unit respectively. Among them, the battery pack includes a box body, a plurality of battery modules, and an isolation component arranged in the box body. The box body and the isolation component are fixedly connected. Each battery module is arranged at intervals in the box body. A coolant for immersing each battery module is arranged in the box body. Among them, a liquid inlet and a liquid outlet are arranged on the same side wall of the box body. The box body is separated into a first box cavity and a second box cavity by the isolation component. The liquid inlet is located in the first box cavity, and the liquid outlet is located in the second box cavity. There are flow channel holes between the first box cavity and the second box cavity. A coolant flow channel is formed between the first box cavity and the second box cavity through the flow channel holes. The coolant circulates from the liquid inlet to the liquid outlet along the coolant flow channel. The method includes steps 202-206, where:

[0083] Step 202, detecting the core temperature of each battery module through the temperature detection unit;

[0084] It should be noted that the cooling adjustment method provided in this embodiment is used to control the above immersion energy storage system to adjust the circulation flow of the coolant.

[0085] Step 204: When the control unit determines that there is a target cell temperature greater than the preset cell temperature threshold among the cell temperatures, match the current working mode indicated by each cell temperature for the adjustment unit, and control the adjustment unit to be in the current working mode.

[0086] Step 206: Adjust the coolant circulating in the coolant flow channel in the current working mode by the adjustment unit.

[0087] As an example, steps 202 to 206 include: detecting the cell temperatures of different battery modules arranged at intervals in the box in real time through temperature sensors, and sending the cell temperatures of each battery module to the control terminal. Then, determine the magnitude relationship between each cell temperature and the preset cell temperature threshold through the control terminal. Further, when it is determined through the control terminal that there is a target cell temperature greater than the preset cell temperature threshold among the cell temperatures, that is, when it is determined through the control terminal that the battery pack needs to be cooled and adjusted, calculate the average value of each cell temperature, and use this average value as the real-time working temperature of the battery pack. And query the current working mode of the adjustment unit with the temperature range where the real-time working temperature is located as an index through the control terminal, and control the adjustment unit to be adjusted from the initial working mode to the current working mode through the control terminal. Finally, when the adjustment unit works in the current working mode, adjust the coolant circulating in the coolant flow channel.

[0088] In the cooling adjustment method provided in this embodiment, since the control unit can control the adjustment unit to work in the corresponding working mode according to the real-time cell temperature of the battery modules in the battery pack box, and the battery pack box is isolated into a first box cavity and a second box cavity by the isolation component, and there is a flow channel hole between the first box cavity and the second box cavity. Furthermore, through the spatial design of the battery pack box, a directional coolant flow channel is formed in the box between the liquid inlet and the liquid outlet on the same side wall of the battery pack box, so that the coolant injected from the liquid inlet can naturally flow in the battery pack box according to this coolant flow channel. At the same time, the coolant in the battery pack can circulate from the liquid inlet of the battery pack to the liquid outlet with a flow capacity stronger than the natural flow under the adjustment of the adjustment unit, that is, the purpose of alleviating the coolant temperature difference between different regions in the battery pack can be achieved by strengthening the turbulence intensity of the coolant. Further, because the battery modules are arranged at intervals in the box, it is ensured that the surfaces of the battery cells in the battery pack can be fully wetted. Therefore, the coolant can be fully heat-exchanged through the specified coolant flow channel under the adjustment of the adjustment unit. Furthermore, it can overcome the technical defect that due to the large coolant immersion area in the battery pack box, when the coolant flows slowly in the box, the coolant temperature difference between different coolant immersion intervals is large, and thus it is easy to have a flow dead zone in the coolant return or blockage area. Therefore, the adjustment effect of the battery pack cooling adjustment is improved.

[0089] In an exemplary embodiment, matching the current working mode commonly indicated by each cell temperature for the adjustment unit includes:

[0090] Obtain the first temperature range in which the target cell temperature is currently located; fuse each cell temperature to obtain the overall temperature of the battery pack, and determine the second temperature range in which the overall temperature is located; predict the current working temperature of the battery pack according to the first temperature range and the second temperature range, where the first temperature range and the second temperature range belong to different temperature range division criteria; query the current working mode of the adjustment unit according to the current working temperature.

[0091] It should be noted that the maximum single temperature of the cells in each battery module fed back by the target cell temperature cannot describe the overall heat reception situation of the battery pack during charging and discharging. Therefore, to accurately match the current working mode for the adjustment unit, taking the single cell temperature of the battery pack and the overall dimension within the battery pack as indicators, jointly predict or evaluate the current working temperature of the battery pack, and match the current working mode based on the current working temperature. Among them, the first temperature range and the second temperature range are basic data indicators for objectively reflecting the current working temperature of the battery pack from two dimensions of the single cell and the overall battery pack. There is a first mapping relationship between the first temperature range and the target cell temperature. For example, 50°C belongs to working range v1, and 60°C is in working range v2. There is a second mapping relationship between the first temperature range and the target cell temperature. For example, 40°C belongs to working range t1, and 45°C belongs to working range t2. It can be understood that the first temperature range and the second temperature range belong to different temperature range division criteria.

[0092] As an example, through the control unit, using the target cell temperature as an index, query the first temperature range in which the target cell temperature is currently located; through the control unit, calculate the average value of each cell temperature, take the average value of each cell temperature as the overall temperature of the battery pack, and use the overall temperature as an index to query the second temperature range in which the overall temperature is currently located; through the control unit, construct a first temperature index corresponding to the first temperature range and a second temperature index corresponding to the second temperature range, and jointly input the first temperature index and the second temperature index into a preset temperature prediction model to predict the current working temperature of the battery pack, where the first temperature index and the second temperature index can be different specific temperature values; through the control unit, using the current working temperature as an index, query the current working mode of the adjustment unit.

[0093] In this embodiment, the highest cell temperature and the overall average cell temperature that objectively reflect the actual working temperature of the battery pack are used to construct the first temperature index and the second temperature index under different data dimensions. The preset temperature prediction model uses the first temperature index and the second temperature index as input data to predict the actual working temperature of the battery pack. Finally, the corresponding current working mode is matched to the actual working temperature, achieving the purpose of accurately grasping the current actual working mode of the battery pack. Therefore, it lays a foundation for improving the adjustment effect of the battery pack cooling adjustment.

[0094] In an exemplary embodiment, the adjusting unit includes a first guide impeller and a second guide impeller. The first guide impeller and the second guide impeller are symmetrically installed on both sides of the center line of the placement axis corresponding to each battery module. The center line of the placement axis is perpendicular to the placement direction of each battery module. Adjusting the coolant circulating in the coolant flow channel in the current working mode by the adjusting unit includes one of the following:

[0095] Adjusting the coolant circulating in the coolant flow channel in the current working mode by the first guide impeller; adjusting the coolant circulating in the coolant flow channel in the current working mode by the second guide impeller; adjusting the coolant circulating in the coolant flow channel in the current working mode by the first guide impeller and the second guide impeller together

[0096] As an example, adjusting the coolant circulating in the coolant flow channel at a first rotation speed adapted to the current working mode by the first guide impeller; adjusting the coolant circulating in the coolant flow channel at a first rotation speed adapted to the current working mode by the second guide impeller; adjusting the coolant circulating in the coolant flow channel at a first rotation speed adapted to the current working mode by the first guide impeller and the second guide impeller together.

[0097] In this embodiment, the adjusting unit composed of the first guide impeller and the second guide impeller is symmetrically arranged on both sides of the center line of the placement axis indicated by each battery module, and the working states of the first guide impeller and / or the second guide impeller can be adapted to the current working mode of the adjusting unit, thereby reducing the working duration or working load of the first guide impeller and / or the second guide impeller. At the same time, the first guide impeller and the second guide impeller arranged at different positions can also improve the convective capacity of the coolant at the corresponding positions of the second box cavity. Therefore, while further improving the adjustment effect of the battery pack cooling adjustment, this embodiment improves the working life of the adjusting unit.

[0098] In an exemplary embodiment, the adjusting unit is fixed to the first box cavity, each battery module is placed in the second box cavity, and the flow channel holes are arranged on the isolation component; wherein,

[0099] The liquid inlet and the liquid outlet are located on the first side wall of the box body. The first distance between the flow channel hole and the second side wall of the box body is less than the second distance between the flow channel hole and the first side wall. The first side wall and the second side wall are opposite to each other. The coolant circulates in the first main flow channel arranged in the first direction in the first box cavity. The coolant circulates in the second main flow channel arranged in the second direction between the first box cavity and the second box cavity. The coolant circulates in the third main flow channel arranged in the third direction in the second box cavity. The first direction, the second direction, and the third direction are different from each other. The first main flow channel, the second main flow channel, and the third main flow channel together form the coolant flow channel.

[0100] In an exemplary embodiment, any one of the battery modules includes a plurality of battery cells, and the battery cells are arranged at intervals; wherein,

[0101] The third main flow channel includes a first sub-flow channel formed by the gaps between the battery modules, a second sub-flow channel formed by the gaps between the battery cells, and a third sub-flow channel formed on the tops of the battery cells. Among them, the flow directions of the first sub-flow channel and the second sub-flow channel are perpendicular to each other, and the flow directions of the first sub-flow channel and the third sub-flow channel are parallel to each other.

[0102] In an exemplary embodiment, the isolation component includes a first isolation part and a second isolation part. The box body is fixedly connected to the first isolation part, and the second isolation part is detachably connected to the box body and the first isolation part respectively. The flow channel hole is formed by inlaying the second side wall and the first isolation part; wherein,

[0103] The first isolation part is used to isolate the battery modules and the adjustment unit, and the second isolation part is used to isolate the box body and the external space.

[0104] In an exemplary embodiment, the first isolation part includes a first support plate and a second support plate arranged at intervals. The first support plate is fixedly connected to the third side wall of the box body. The third side wall is adjacent to the first side wall and the second side wall. One end of the second support plate is fixedly connected to the isolation component and the first side wall respectively, and the other end of the second support plate extends along a preset direction to the second side wall and is fixedly connected. Each of the battery modules includes a first battery module and a second battery module; wherein,

[0105] The first battery module is supported by the first support plate and the second support plate together, the second battery module is supported by the second support plate, the flow channel holes include a first main flow channel hole and a second main flow channel hole, the first main flow channel hole is formed by inlaying the first support plate, the bottom wall of the first battery module, the second support plate and the second side wall together, and the second main flow channel hole is formed by inlaying the second support plate, the bottom wall of the second battery module and the second side wall together.

[0106] In an exemplary embodiment, the battery pack further includes a filling component, the filling component is streamlined, the filling component is fixed in the cavity of the first box body, and the first central position of the filling component and the second central position of the flow channel hole are located on the same straight line; wherein,

[0107] The fixing direction of the filling component in the cavity of the first box body is parallel to the flowing direction of the flow channel hole, and there is a gap between the filling component and the isolation component, wherein the filling component is used to guide the coolant flowing in the cavity of the first box body to the flow channel hole.

[0108] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps or stages in other steps.

[0109] Based on the same inventive concept, the embodiment of the present application also provides a computer device for implementing the cooling adjustment method involved above. This computer device can be a terminal, and its internal structure diagram can be as Figure 8As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a cooling adjustment method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0110] Those skilled in the art can understand that Figure 8 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0111] In one embodiment, a computer device is further provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0112] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0113] In one embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by the processor, the steps in the above method embodiments are implemented.

[0114] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant regulations.

[0115] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0116] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this application.

[0117] The above-described embodiments merely represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application shall be subject to the appended claims.

Claims

1. An immersion energy storage system, characterized in that: The system includes a temperature detection unit, a control unit and an adjustment unit installed on a battery pack, wherein the battery pack includes a box, a plurality of battery modules and an isolation component, wherein the box is isolated into a first box cavity and a second box cavity by the isolation component, the adjustment unit is fixed to the first box cavity, and the battery modules are arranged at intervals in the second box cavity; wherein, A liquid inlet located in the first box cavity and a liquid outlet located in the second box cavity are provided on the same side wall of the box body, a flow channel hole is provided on the isolation component, and the flow channel hole is provided on a side of the side wall away from the liquid inlet and the liquid outlet, a cooling liquid flow channel is formed between the first box cavity and the second box cavity through the flow channel hole, and the cooling liquid that immerses each of the battery modules circulates along the cooling liquid flow channel from the liquid inlet to the liquid outlet; The temperature detection unit is used to detect the temperature of the battery cells of each battery module; The control unit is configured to, when determining that there is a target cell temperature greater than a preset cell temperature threshold among the cell temperatures, match the current working mode indicated by each of the cell temperatures to the adjustment unit, and control the adjustment unit to be in the current working mode; The regulating unit is used to regulate the coolant circulating in the coolant flow channel in the current working mode, wherein the coolant flow channel includes a first main channel, a second main channel and a third main channel, the first main channel is arranged along a first direction in the first box cavity, the second main channel is arranged along a second direction between the first box cavity and the second box cavity, and the third main channel is arranged along a third direction in the second box cavity, the first direction is opposite to the third direction, and the second direction is different from the first direction and different from the third direction.

2. The system according to claim 1, characterized in that Any of the battery modules comprises a plurality of battery cells, and the battery cells are arranged at intervals; wherein, The third main flow channel includes a first branch channel formed by the gaps between the battery modules, a second branch channel formed by the gaps between the battery cells, and a third branch channel formed on the top of each battery cell, wherein the flow directions of the first branch channel and the second branch channel are perpendicular to each other, and the flow directions of the first branch channel and the third branch channel are parallel to each other.

3. The system according to claim 1, characterized in that The isolation assembly includes a first isolation component and a second isolation component, the box body and the first isolation component are fixedly connected, the second isolation component is detachably connected to the box body and the first isolation component respectively, and the flow channel hole is inlaid by the second side wall of the box body and the first isolation component; wherein, The first isolation component is used to isolate each of the battery modules and the adjustment unit, and the second isolation component is used to isolate the box and the external space.

4. The system according to claim 3, characterized in that The first isolation component includes a first support plate and a second support plate arranged at intervals, the first support plate is fixedly connected to the third side wall of the box, the third side wall is adjacent to the first side wall and the second side wall of the box, one end of the second support plate is respectively fixedly connected to the isolation component and the first side wall, the other end of the second support plate extends to the second side wall along a preset direction and is fixedly connected, each of the battery modules includes a first battery module and a second battery module; wherein, The first battery module is jointly supported by the first support plate and the second support plate, the second battery module is supported by the second support plate, the flow channel hole includes a first main flow channel hole and a second main flow channel hole, the first main flow channel hole is jointly inlaid by the first support plate, the bottom wall of the first battery module, the second support plate and the second side wall, and the second main flow channel hole is jointly inlaid by the second support plate, the bottom wall of the second battery module and the second side wall.

5. The system according to claim 4, characterized in that The battery pack also includes a flow channel hole valve, which is fixedly installed on the first isolation component, wherein the flow channel hole valve includes a first flow channel hole valve and a first flow channel hole valve, the first flow channel hole valve is used to open and close the first main flow channel hole, the second flow channel hole valve is used to open and close the second main flow channel hole, and the first opening of the first flow channel hole valve is smaller than the second opening of the second flow channel hole valve.

6. The system according to claim 1, characterized in that The battery pack further includes a filling component, which is streamlined and fixed in the first box cavity, and a first center position of the filling component and a second center position of the flow channel hole are located on the same straight line; wherein, The filling component is parallel to the fixing direction of the first box cavity and the flow direction of the flow channel hole, and a gap is left between the filling component and the isolation component, wherein the filling component is used to guide the coolant in the first box cavity to flow to the flow channel hole.

7. The system according to claim 1, characterized in that The regulating unit includes a first guide impeller and a second guide impeller, and the first guide impeller and the second guide impeller are symmetrically installed on both sides of the center line of the placement axis corresponding to each of the battery modules, and the center line of the placement axis is perpendicular to the placement direction of each of the battery modules.

8. A cooling and regulating method, characterized in that: Applied to an immersion energy storage system, the system includes a temperature detection unit, a control unit and an adjustment unit installed on a battery pack, the battery pack includes a box, a plurality of battery modules and an isolation component, the box is isolated into a first box cavity and a second box cavity by the isolation component, the adjustment unit is fixed to the first box cavity, and the battery modules are arranged at intervals in the second box cavity; wherein, The same side wall of the box body is provided with a liquid inlet located in the first box body cavity and a liquid outlet located in the second box body cavity, the isolation component is provided with a flow channel hole, the flow channel hole is arranged on a side of the side wall away from the liquid inlet and the liquid outlet, a cooling liquid flow channel is formed between the first box body cavity and the second box body cavity through the flow channel hole, and the cooling liquid that immerses each of the battery modules circulates along the cooling liquid flow channel from the liquid inlet to the liquid outlet; the method comprises: Detecting the battery cell temperature of each of the battery modules by the temperature detection unit; When determining, by the control unit, that there is a target cell temperature greater than a preset cell temperature threshold among the cell temperatures, matching the current working mode indicated by each of the cell temperatures for the regulating unit, and controlling the regulating unit to be in the current working mode; The coolant circulating in the coolant flow channel is regulated by the regulating unit in the current working mode, wherein the coolant flow channel includes a first main channel, a second main channel and a third main channel, the first main channel is arranged along a first direction in the first box cavity, the second main channel is arranged along a second direction between the first box cavity and the second box cavity, and the third main channel is arranged along a third direction in the second box cavity, the first direction is opposite to the third direction, and the second direction is different from the first direction and different from the third direction.

9. The method according to claim 8, characterized in that The step of matching the current working mode indicated by the temperatures of the battery cells to the regulating unit includes: Acquire a first temperature range in which the target battery core temperature is currently located; The temperatures of the battery cells are merged to obtain the overall temperature of the battery pack, and a second temperature interval of the overall temperature is determined, wherein the overall temperature of the battery pack is an average value of the temperatures of the battery cells of the battery pack; Predicting a current operating temperature of the battery pack according to the first temperature interval and the second temperature interval, wherein the first temperature interval and the second temperature interval belong to different temperature interval division standards, and the current operating temperature is used to characterize a current overall heating condition of the battery pack during the charging and discharging process; According to the current operating temperature, the current operating mode of the regulating unit is queried.

10. The method according to claim 8, characterized in that The regulating unit comprises a first guide vane and a second guide vane, wherein the first guide vane and the second guide vane are symmetrically mounted on two sides of a center line of a placement axis corresponding to each of the battery modules, and the center line of the placement axis is perpendicular to a placement direction of each of the battery modules; The step of regulating the coolant circulating in the coolant flow channel by the regulating unit in the current working mode includes one of the following: regulating the coolant circulating in the coolant flow channel by the first guide impeller in the current working mode; regulating the coolant circulating in the coolant flow channel by the second guide impeller in the current working mode; The coolant circulating in the coolant flow channel is regulated by the first guide vane and the second guide vane together in the current working mode.

Images