Liquid cooling system and electric equipment

Abstract

The embodiment of the utility model provides a liquid cooling system and electric equipment, and relates to the field of energy storage products. The liquid cooling system comprises an immersion box body and a direct cooling unit; the immersion box body is used for placing a plurality of battery cells, and cooling liquid is also arranged in the immersion box body; the plurality of battery cells are arranged in multiple layers along a first direction; in the first direction, a mounting space is arranged between two adjacent layers of battery cells; the direct cooling unit comprises a main body, a first pipeline and a second pipeline; the first pipeline is communicated with the main body and is arranged in the mounting space; the second pipeline is communicated with the main body and is arranged on one side of the plurality of battery cells along the first direction; the first pipeline and the second pipeline are filled with refrigerants, and the main body is used for circulating heat exchange refrigerants. The battery cell is immersed in the cooling liquid and is combined with the first pipeline and the second pipeline which are distributed around the battery cell, so that the heat dissipation process is more uniform, the heat dissipation efficiency is improved, local overheating is avoided, and the durability and the reliability of the system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage products, in particular to a liquid cooling system and an electrical equipment. BACKGROUND

[0002] The battery module is an important part of the electrical equipment, which can supply power to the electronic module in the electrical equipment to ensure the normal operation of the electrical equipment.

[0003] The battery module is prone to generate a large amount of heat during charging and discharging, resulting in temperature rise, reducing battery efficiency and life. Immersion liquid cooling can effectively reduce the battery temperature by immersing the battery in the cooling liquid, preventing performance degradation and safety problems caused by overheating. However, immersion liquid cooling has the problems of uneven heat distribution and poor heat dissipation effect. UTILITARIAN CONTENT

[0004] The embodiments of the present application provide a liquid cooling system and an electrical equipment to solve the problems of uneven heat distribution and poor heat dissipation effect of immersion liquid cooling.

[0005] In one aspect, the present application provides a liquid cooling system, comprising an immersion box body and a direct cooling unit.

[0006] The immersion box body is used to place a plurality of battery cells, and a cooling liquid is further arranged in the immersion box body. The plurality of battery cells are arranged in multiple layers along a first direction. An installation space is arranged between two adjacent layers of battery cells in the first direction.

[0007] The direct cooling unit comprises a main body, a first pipeline and a second pipeline. The first pipeline is in communication with the main body, and the first pipeline is arranged in the installation space. The second pipeline is in communication with the main body, and the second pipeline is arranged on one side of the plurality of battery cells along the first direction. The first pipeline and the second pipeline are filled with refrigerant, and the main body is used to circulate and exchange heat with the refrigerant. In some embodiments of the present application, a plurality of installation spaces are formed between the plurality of battery cells.

[0008] The first pipeline comprises a main pipeline and a plurality of coils. The plurality of coils are arranged in the plurality of installation spaces, and the coils are in communication with the main body through the main pipeline.

[0009] In some embodiments of the present application, the main pipeline extends along the first direction, and the main pipeline comprises an output pipeline and a recovery pipeline arranged at intervals.

[0010] The first end of the output pipeline is in communication with the main body, and the second end of the output pipeline is in communication with the first end of the plurality of coils.

[0011] The first end of the recovery tube is connected to the second end of several coils, and the second end of the recovery tube is connected to the main body.

[0012] In some embodiments of this application, there are multiple battery cells in the same layer, the multiple battery cells are arranged along a second direction, and the battery cells extend along a third direction;

[0013] The first direction, the second direction, and the third direction are set perpendicularly to each other.

[0014] The main pipe is located on one side of the plurality of battery cells along the second direction.

[0015] In some embodiments of this application, the liquid cooling system further includes a support frame, the support frame comprising several layers of first support structures;

[0016] Several layers of the first support structure are arranged at intervals along the first direction; in the first direction, the distance between two adjacent layers of the first support structure is greater than the height of the battery cell.

[0017] In some embodiments of this application, the first support structure includes a fixing surface and a bonding surface. The fixing surface extends along a first direction and is fixedly connected to the immersion tank. The bonding surface is perpendicular to the fixing surface and is fixedly connected to the fixing surface. The battery cell is disposed on the bonding surface.

[0018] In some embodiments of this application, the bracket further includes several layers of second support structures, which are disposed at the bottom of the first support structure and are fixedly connected to the immersion tank.

[0019] In the first direction, the distance between two adjacent layers of the second support structure is greater than the height of the battery cell;

[0020] The coil is disposed between the first support structure and the second support structure.

[0021] In some embodiments of this application, the second support structure is disposed at the bottom of the first support structure via a fixing lug. The second support structure includes an extension strip and a support strip. The extension strip is perpendicular to the first direction and is symmetrically disposed on both sides of the support strip.

[0022] The top of the coil can contact the battery cell, and the bottom of the coil can be attached to the top of the support strip.

[0023] In some embodiments of this application, the second conduit includes a first-side conduit and a second-side conduit;

[0024] The first surface tube is located on the first surface of the plurality of battery cells, and the second surface tube is located on the second surface of the plurality of battery cells, with the first surface tube and the second surface tube arranged opposite to each other.

[0025] On the other hand, embodiments of this application provide an electrical device including the liquid cooling system described above.

[0026] The liquid cooling system and electrical equipment provided in this application embodiment, by distributing the first and second pipes containing refrigerant around the battery cell, enable the heat of each battery cell to be quickly carried away by the refrigerant, thereby improving heat dissipation efficiency and effect and extending the service life of the equipment; by immersing the battery cell in the coolant and combining it with the first and second pipes distributed around the battery cell, the heat dissipation process is more uniform, avoiding local overheating, and improving the durability and reliability of the system. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the liquid cooling system provided in an embodiment of this application;

[0029] Figure 2 A schematic diagram of the coil installation in a liquid cooling system provided in an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the coil in the liquid cooling system provided in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the second pipe in the liquid cooling system provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the first support structure in the liquid cooling system provided in the embodiments of this application;

[0033] Figure 6 A schematic diagram of the second support structure in the liquid cooling system provided in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 01. Battery cell;

[0036] 100. Immersion tank;

[0037] 200. Direct cooling unit; 210. Main body; 220. First pipe; 221. Main pipe; 221a. Output pipe; 221b. Recovery pipe; 222. Coil; 230. Second pipe; 231. First side pipe; 232. Second side pipe;

[0038] 300, bracket; 310, first support structure; 311, fixing surface; 312, contact surface; 320, second support structure; 321, extension strip; 322, support strip.

[0039] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0040] As mentioned in the background section, existing bottom-cooled plate liquid cooling systems result in large temperature differences within the battery cell, affecting its lifespan and having limited ability to suppress thermal runaway. Immersion liquid cooling technology can achieve more uniform temperature distribution within the battery cell and has more efficient heat dissipation capabilities, significantly extending the lifespan of energy storage devices and reducing thermal degradation.

[0041] While immersion liquid cooling can improve heat transfer efficiency, effectively transferring heat from the hardware to the cooling system remains a challenge. Uneven heat distribution may cause some devices to overheat, reducing the overall system's heat dissipation effect.

[0042] In view of this, the embodiments of this application, by distributing the first and second pipes containing refrigerant around the battery cell, enable the heat of each battery cell to be quickly carried away by the refrigerant, thereby improving heat dissipation efficiency and effect and extending the service life of the equipment; by immersing the battery cell in coolant in combination with the first and second pipes distributed around the battery cell, the heat dissipation process is made more uniform, avoiding local overheating, and improving the durability and reliability of the system.

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0044] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0045] refer to Figures 1-4 This application provides a liquid cooling system, including an immersion chamber 100 and a direct cooling unit 200.

[0046] The immersion chamber 100 is used to house multiple battery cells 01, and coolant is also provided inside the immersion chamber 100; the multiple battery cells 01 are arranged in multiple layers along a first direction; in the first direction, an installation space is provided between two adjacent layers of battery cells 01.

[0047] The direct-cooling unit 200 includes a main body 210, a first pipe 220, and a second pipe 230. The first pipe 220 is connected to the main body 210 and is located within the installation space. The second pipe 230 is connected to the main body 210 and is located on one side of the plurality of battery cells 01 along a first direction. The first pipe 220 and the second pipe 230 are filled with refrigerant, and the main body 210 is used for circulating heat exchange of the refrigerant.

[0048] It is understood that multiple battery cells 01 are arranged in multiple layers along the first direction within the immersion tank 100. This arrangement helps to improve space utilization and provides a larger contact area for the flow of coolant. The first pipe 220 is connected to the main body 210 and is located in the installation space between the battery cells 01 for direct cooling of the battery cells 01. The second pipe 230 is located on one side of the multiple battery cells 01 along the first direction to further enhance the cooling effect. The first pipe 220 and the second pipe 230 are filled with refrigerant, which circulates and exchanges heat through the main body 210. The refrigerant absorbs and releases heat through phase change within the pipes, thereby improving energy conversion efficiency.

[0049] Refrigerant refers to a working fluid that can undergo phase change under certain pressure and temperature conditions, and achieve heat exchange through evaporation and condensation (from liquid to gas and then back to liquid). Compared with single-phase working fluids (such as water or water-glycol solution), the phase change process of refrigerant can absorb and release more heat. This is because the latent heat involved in the phase change process (latent heat of vaporization and latent heat of condensation) is usually much greater than the sensible heat change of single-phase working fluids, resulting in higher energy conversion efficiency.

[0050] Latent heat refers to the heat absorbed or released by a substance during a phase transition (such as from solid to liquid, or from liquid to gas) without causing a change in temperature; sensible heat refers to the heat absorbed or released by a substance during a temperature change without involving a phase transition.

[0051] In some embodiments, the refrigerant described above may be R134a (1,1,1,2-tetrafluoroethane) or R22 (difluorochloromethane), both of which are widely used in air conditioners, refrigerators and other refrigeration systems.

[0052] It should be noted that as long as the refrigerant can achieve the effect of indirect heat exchange in the first pipe 220 and the second pipe 230, the embodiments of this application do not impose too many restrictions on the specific type of refrigerant.

[0053] The main body 210 is equipped with at least a compressor, condenser, regenerator, expansion valve, and distributor, while the first pipe 220 and the second pipe 230, which extend into the submerged housing 100, serve as evaporators. After the refrigerant exchanges heat with the coolant, the low-temperature, low-pressure liquid refrigerant flows out of the submerged housing 100 and enters the regenerator. The regenerator exchanges heat with the high-temperature refrigerant to maintain its superheated state, ensuring that the refrigerant enters the compressor in a gaseous state. After being compressed by the compressor, the refrigerant's temperature and pressure increase. Then, the high-temperature gaseous refrigerant enters the condenser and exchanges heat with the environment through forced convection by the fan, becoming liquid refrigerant. After passing through the regenerator, it is throttled and cooled by the expansion valve. Then, after the flow is evenly distributed by the distributor, it re-enters the first pipe 220 and the second pipe 230 (evaporator) for heat exchange, completing the refrigeration cycle.

[0054] By providing an installation space between two adjacent battery cells 01 and immersing the cells 01 in coolant, the coolant can more comprehensively cover the cell surface, increasing the contact area for heat conduction and improving overall heat dissipation efficiency. The insulating effect of the coolant can also effectively prevent safety issues such as short circuits, especially in high-energy and large-scale energy storage applications, reducing the risk of accidents. Furthermore, by incorporating the first pipe 220 and the second pipe 230, with refrigerant pipes distributed around the cell 01, the heat from the cell 01 can be rapidly carried away by the refrigerant, further enhancing heat dissipation efficiency and effectiveness. Extending the service life of the equipment; by immersing the battery cell 01 in the coolant and combining it with the first pipe 220 and the second pipe 230 distributed around the battery cell 01, the heat dissipation process is more uniform, avoiding local overheating and improving the durability and reliability of the system; the surrounding arrangement of the first pipe 220 and the second pipe 230 is simple in design, smaller in size, reduces operating costs, and can provide greater cooling capacity in a limited space; the above design reduces the sealing design of a single battery cell 01, reduces the cost of structural sealing design and reduces the number of sealing points; the water circulation design that eliminates the need for coolant reduces the risk of coolant leakage.

[0055] refer to Figure 3 In some possible implementations, several mounting spaces are formed between the multilayer cells 01.

[0056] The first pipeline 220 includes a main pipeline 221 and several coils 222. The coils 222 are arranged in several installation spaces and are connected to the main body 210 through the main pipeline 221.

[0057] It is known that multiple battery cells 01 are arranged in multiple layers along the first direction, forming several installation spaces between the layers. These installation spaces can be used to place the coil 222. The main pipe 221 serves as the main channel for refrigerant delivery and is connected to the main body 210 of the direct cooling unit 200 to form a complete cooling cycle.

[0058] The coil 222 is directly installed in the installation space between the cells, which can more effectively absorb the heat generated by the cells 01. Through the connection with the main pipe 221, the coolant can quickly circulate and remove heat. By setting the coil 222 between each layer of cells 01, the coil 222 can quickly exchange heat with the surface of each cell 01, reducing the problem of uneven heat distribution and preventing local overheating. The layout of the coil 222 can quickly respond to changes in cell temperature, providing a more timely cooling effect and suppressing the risk of thermal runaway. By adjusting the layout of the coil 222 and the main pipe 221, different cell sizes and shapes can be adapted to meet various application requirements and system scales.

[0059] In some possible implementations, the main conduit 221 extends along a first direction and includes an output pipe 221a and a recovery pipe 221b spaced apart.

[0060] The first end of the output tube 221a is connected to the main body 210, and the second end of the output tube 221a is connected to the first end of several coils 222.

[0061] The first end of the recovery tube 221b is connected to the second end of several coils 222, and the second end of the recovery tube 221b is connected to the main body 210.

[0062] It is known that the output pipe 221a is responsible for transporting refrigerant with heat exchange capacity from the main body to each coil 222; the recovery pipe 221b is responsible for returning the refrigerant after heat exchange with the battery cell 01 from the coil 222 back to the main body for cooling. That is, the refrigerant is transported from the main body 210 to the coil 222 through the output pipe 221a, absorbs the heat generated by the battery cell 01 through the coil 222, and then returns to the main body 210 through the recovery pipe 221b, completing the cooling cycle.

[0063] With the proper arrangement of the output pipe 221a and the recovery pipe 221b, the refrigerant can flow efficiently through each coil 222, ensuring that heat is quickly carried away and improving the overall heat dissipation efficiency.

[0064] In some possible implementations, there are multiple cells 01 in the same layer, the multiple cells 01 are arranged along the second direction, and the cells 01 extend along the third direction.

[0065] The first direction, the second direction, and the third direction are set perpendicularly to each other.

[0066] The main pipe 221 is located on one side of the multiple cells 01 along the second direction.

[0067] Multiple battery cells 01 are arranged in a three-dimensional structure along a first direction, a second direction, and a third direction; the first direction, the second direction, and the third direction are arranged perpendicularly to each other, forming an orthogonal coordinate system. This layout ensures the uniform distribution of the battery cells 01 in three-dimensional space; the main pipe 221 is arranged on the side of the multiple battery cells 01, which is the direction in which the battery cells 01 are arranged along the second direction. This arrangement allows the main pipe to directly contact the side of each battery cell, facilitating the distribution and recovery of refrigerant in the coils 222 within multiple or multi-layer installation spaces.

[0068] The first direction is usually consistent with the arrangement direction of the cell layers and is used to define the spacing between layers; the second direction refers to the arrangement direction of the cells within the same layer; the third direction is the extension direction of cell 3110, which is usually consistent with the height or length of cell 01.

[0069] By optimizing the arrangement of the cells 01 in three-dimensional space, the coolant can flow more evenly across the surface of each cell, improving the overall heat dissipation efficiency; ensuring that the coil 222 can evenly cover the cells 01 reduces the problem of uneven heat distribution and prevents local overheating; taking into account the engineering challenges of large-scale liquid flow and heat transfer, the system can operate efficiently through reasonable arrangement of cells 01 and layout of other components.

[0070] By placing the main pipe 221 on the side of the battery cell, the refrigerant can be quickly distributed to each battery cell 01 for heat exchange, improving heat transfer efficiency and overall heat dissipation capacity, reducing uneven heat distribution and preventing local overheating. This arrangement allows the refrigerant to respond quickly to changes in battery cell temperature, providing more timely cooling and suppressing the risk of thermal runaway. By centrally placing the main pipe on one side, the layout and connection of the pipes can be simplified, reducing pipe complexity and potential flow resistance.

[0071] refer to Figure 5 In some possible implementations, the liquid cooling system also includes a support 300, which includes several layers of first support structures 310.

[0072] The first support structure 310 is arranged in layers at intervals along the first direction.

[0073] In the first direction, the distance between two adjacent first support structures 310 is greater than the height of the battery cell 01.

[0074] It is known that the first support structure 310 is used to support and fix the battery cell 01; the arrangement of the two adjacent first support structures 310 provides sufficient space for placing the battery cell 01 and cooling components, such as the coil 222.

[0075] The multi-layer support structure design allows the coolant to fill between the cells 01, increasing the contact area for heat conduction and improving the overall heat dissipation efficiency; the bracket 300 provides stable support for the cells 01, preventing displacement or vibration during operation.

[0076] In some possible implementations, the first support structure 310 includes a fixing surface 311 and a bonding surface 312. The fixing surface 311 extends along a first direction and is fixedly connected to the immersion tank 100. The bonding surface 312 is perpendicular to the fixing surface 311 and is fixedly connected to the fixing surface 311. The battery cell 01 is disposed on the bonding surface 312.

[0077] It is known that the fixing surface 311 provides structural stability and support; the bonding surface 312 is used to support and fix the battery cell 01.

[0078] By using the first support structure 310 to support and fix the battery cell 01, a stable installation space is provided between the battery cells 01, preventing the battery cell 01 from pressing against the coil 222, avoiding damage to the coil 22, causing refrigerant leakage, affecting heat dissipation efficiency, and improving the durability of the system; the fixed connection between the fixed surface 311 and the immersion box 100 provides the stability of the overall structure and prevents displacement or vibration during operation.

[0079] refer to Figure 6 In some possible implementations, the support 300 may further include several layers of second support structures 320, which are disposed at the bottom of the first support structure 310 and are fixedly connected to the immersion tank 100.

[0080] In the first direction, the distance between two adjacent second support structures 320 is greater than the height of the battery cell 01.

[0081] The coil 222 is positioned between the first support structure 310 and the second support structure 320.

[0082] It is known that the first support structure 310 provides direct support for the battery cell and is fixedly connected to the immersion tank 100; the second support structure 320 is used to provide support for the coil 222, so that the coil 222 can be close to the battery cell 01; the coil 222 is in direct contact with the battery cell 01 and is used to absorb the heat generated by the battery cell 01.

[0083] The coil 222 is positioned between the two support structures, which can more effectively absorb the heat generated by the battery cell and quickly remove it through the refrigerant, thereby improving the overall heat dissipation efficiency. The second support structure 320 provides support for the coil 222 to prevent the coil 222 from shifting or vibrating during operation.

[0084] In some possible implementations, the second support structure 320 is disposed at the bottom of the first support structure 310 by means of a fixing ear. The second support structure 320 includes an extension strip 321 and a support strip 322. The extension strip 321 is perpendicular to the first direction and is symmetrically disposed on both sides of the support strip 322.

[0085] The top of the coil 222 can contact the battery cell 01, and the bottom of the coil 222 can be attached to the top of the support strip 322.

[0086] The second support structure 320 is set at the bottom of the first support structure 310 through a fixing ear. The second support structure 320 includes an extension strip 321 and a support strip 322. The extension strip 321 is perpendicular to the first direction and is symmetrically arranged on both sides of the support strip 322.

[0087] The top of the coil 222 can contact the battery cell 01, and the bottom of the coil 222 can be attached to the top of the support strip 322.

[0088] It is known that the fixing ear is used to fix the second support structure 320 to the bottom of the first support structure 310 to ensure the stability of the overall structure; the extension strip 321 is perpendicular to the first direction and symmetrically arranged on both sides of the support strip 322, providing additional support and stability; the support strip 322 serves as the main support surface of the second support structure 320 to support the coil 222, so that the coil 222 can be in close contact with the bottom of the cell 01; the top of the coil 222 can contact the cell 01 to ensure that heat can be effectively transferred to the refrigerant.

[0089] In some embodiments, the extension strip 321 and the support strip 322 are narrow strip structures, which can provide more contact area between the coolant and the coil 222 and the battery cell 01, thereby improving heat dissipation efficiency.

[0090] By having the top of the coil 222 in direct contact with the cell 01, heat can be quickly transferred to the refrigerant in the coil 222, improving the overall heat dissipation efficiency. The design of the extension bar 321 and the support bar 222 provides support for the coil 222, enhances the stability of the multi-layer coil 222, and prevents displacement or vibration during operation.

[0091] refer to Figure 4 In some possible implementations, the second conduit 230 includes a first conduit 231 and a second conduit 232.

[0092] The first channel tube 231 is located on the first surface of the plurality of battery cells 01, and the second channel tube 232 is located on the second surface of the plurality of battery cells 01. The first channel tube 231 and the second channel tube 232 are arranged opposite to each other.

[0093] It is known that the first channel tube 231 is responsible for absorbing the heat generated by the battery cell 01 from this side of the first surface; the second channel tube 232 is used to absorb heat from the other side of the first surface; the first channel tube 231 and the second channel tube 232 are arranged opposite to each other to form a cooling path surrounding the battery cell 01, ensuring that the refrigerant can efficiently and uniformly remove heat from the two opposite surfaces of the battery cell 01.

[0094] The second end of the output pipe 221a is connected to the first end of the first channel pipe 231 and the second channel pipe 232; the first end of the recovery pipe 221b is connected to the second end of the first channel pipe 231 and the second channel pipe 232.

[0095] By setting cooling pipes 231 on the first side and 232 on the second side on the two opposite surfaces of the cell 01, the refrigerant can cover the surface of the cell 01 more comprehensively, further improving the heat conduction efficiency and overall heat dissipation capacity. The relative arrangement of the first side pipe 231 and the second side pipe 232 ensures that the refrigerant can flow evenly across both sides of the cell 01, reducing the problem of uneven heat distribution and preventing local overheating.

[0096] This application provides an electrical device including the liquid cooling system described above.

[0097] Electrical equipment includes one or more battery cells 01, which generate a large amount of heat during operation. A liquid cooling system is used to manage and dissipate this heat to ensure that the equipment operates within its optimal temperature range.

[0098] The liquid cooling system uses immersion cooling technology to immerse the battery cell 01 in the coolant, achieving efficient heat transfer. The refrigerant direct cooling technology used, namely the direct cooling unit 200, absorbs and releases a large amount of heat through the phase change process of the refrigerant, improving energy conversion efficiency. Through uniform heat dissipation, the temperature distribution of the battery cell 01 is uniform. The liquid cooling system can maintain the battery module within the optimal operating temperature range, improving the energy efficiency and performance stability of the equipment. The efficient heat dissipation capacity of the liquid cooling system can reduce the thermal degradation of the battery cell 01 and maintain the long-term performance of the equipment.

[0099] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0100] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0101] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A liquid cooling system, characterized in that, Includes an immersion chamber (100) and a direct cooling unit (200); The immersion chamber (100) is used to house multiple battery cells (01), and the immersion chamber (100) is also provided with coolant; the multiple battery cells (01) are arranged in multiple layers along a first direction; in the first direction, an installation space is provided between two adjacent layers of battery cells (01); The direct-cooling unit (200) includes a main body (210), a first pipe (220), and a second pipe (230); the first pipe (220) is connected to the main body (210) and is disposed within the installation space; the second pipe (230) is connected to the main body (210) and is disposed on one side of the plurality of battery cells (01) along the first direction; the first pipe (220) and the second pipe (230) are filled with refrigerant, and the main body (210) is used for circulating heat exchange of the refrigerant.

2. The liquid cooling system according to claim 1, characterized in that, Several mounting spaces are formed between the multiple layers of battery cells (01); The first pipe (220) includes a main pipe (221) and several coils (222). The several coils (222) are arranged in several installation spaces, and the coils (222) are connected to the main body (210) through the main pipe (221).

3. The liquid cooling system according to claim 2, characterized in that, The main pipe (221) extends along the first direction, and the main pipe (221) includes an output pipe (221a) and a recovery pipe (221b) arranged at intervals; The first end of the output tube (221a) is connected to the main body (210), and the second end of the output tube (221a) is connected to the first end of several coils (222); The first end of the recovery tube (221b) is connected to the second end of several coils (222), and the second end of the recovery tube (221b) is connected to the main body (210).

4. The liquid cooling system according to claim 2, characterized in that, The number of battery cells (01) in the same layer is multiple, the multiple battery cells (01) are arranged along the second direction, and the battery cells (01) extend along the third direction; The first direction, the second direction, and the third direction are set perpendicularly to each other; The main conduit (221) is disposed on one side of the plurality of said cells (01) along the second direction.

5. The liquid cooling system according to claim 2, characterized in that, The liquid cooling system also includes a support frame (300), which includes several layers of first support structures (310); Several layers of the first support structure (310) are arranged at intervals along the first direction; in the first direction, the distance between two adjacent layers of the first support structure (310) is greater than the height of the battery cell (01).

6. The liquid cooling system according to claim 5, characterized in that, The first support structure (310) includes a fixing surface (311) and a bonding surface (312). The fixing surface (311) extends along a first direction and is fixedly connected to the immersion tank (100). The bonding surface (312) is perpendicular to the fixing surface (311) and is fixedly connected to the fixing surface (311). The battery cell (01) is disposed on the bonding surface (312).

7. The liquid cooling system according to claim 6, characterized in that, The bracket (300) also includes several layers of second support structures (320), which are disposed at the bottom of the first support structure (310) and are fixedly connected to the immersion tank (100); In the first direction, the distance between two adjacent layers of the second support structure (320) is greater than the height of the battery cell (01); The coil (222) is disposed between the first support structure (310) and the second support structure (320).

8. The liquid cooling system according to claim 7, characterized in that, The second support structure (320) is set at the bottom of the first support structure (310) by fixing ears. The second support structure (320) includes an extension strip (321) and a support strip (322). The extension strip (321) is perpendicular to the first direction and is symmetrically arranged on both sides of the support strip (322). The top of the coil (222) can contact the battery cell (01), and the bottom of the coil (222) can be attached to the top of the support strip (322).

9. The liquid cooling system according to any one of claims 1-8, characterized in that, The second conduit (230) includes a first conduit (231) and a second conduit (232); The first surface tube (231) is located on the first surface of the plurality of battery cells (01), and the second surface tube (232) is located on the second surface of the plurality of battery cells (01). The first surface tube (231) and the second surface tube (232) are arranged opposite to each other.

10. An electrical appliance, characterized in that, Includes the liquid cooling system as described in any one of claims 1-9.

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