Battery cabinet and energy storage device

Abstract

The utility model relates to the technical field of energy storage, in particular to a battery cabinet and an energy storage device. The battery cabinet provided by the utility model comprises a cabinet body which comprises a plurality of layers of liquid cooling assemblies, and a fin mounting space is formed between the adjacent layers of liquid cooling assemblies; the fin devices are arranged in the fin mounting spaces, each fin device is provided with a battery cell accommodating cavity for accommodating a battery cell, the cavity wall of each battery cell accommodating cavity comprises a top plate and a bottom plate which are opposite to each other, and the top plate and the bottom plate are respectively in heat conduction connection with the opposite liquid cooling assemblies. Through the arrangement, the battery cabinet and the energy storage device provided by the utility model can improve the heat dissipation effect of the battery cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a battery cabinet and an energy storage device. Background Art

[0002] The battery cabinet includes a cabinet body and multiple groups of battery cells arranged in the cabinet body. During the charging and discharging process, the battery cells generate a large amount of heat. If this heat is not dissipated in time, the temperature inside the battery cabinet will gradually increase. When the temperature of the battery cabinet rises to a certain level, it will affect the use functions of the battery cabinet (such as charging and discharging performance), and even worse, there will be a risk of explosion.

[0003] In the related art, in order to achieve the heat dissipation of the battery cabinet, a liquid cooling plate is arranged in the cabinet body. The liquid cooling plate is arranged at the bottom of the battery cells, and the cooling medium in the liquid cooling plate exchanges heat with the battery cells to achieve the cooling of the battery cells. However, the heat dissipation effect of this heat dissipation structure is still poor and cannot meet the heat dissipation requirements of the battery cabinet.

[0004] How to improve the heat dissipation effect of the battery cabinet has become an important technical problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] In view of this, the utility model provides a battery cabinet and an energy storage device, which can improve the heat dissipation effect of the battery cabinet.

[0006] In a first aspect, the utility model provides a battery cabinet, including:

[0007] A cabinet body, including multiple layers of liquid cooling components, and a fin installation space is formed between adjacent layers of the liquid cooling components;

[0008] A fin device, arranged in each of the fin installation spaces. The fin device is provided with a battery cell accommodation cavity for accommodating battery cells. The cavity wall of the battery cell accommodation cavity includes an opposite top plate and a bottom plate, and the top plate and the bottom plate are respectively in heat conduction connection with the liquid cooling components opposite to them.

[0009] According to the battery cabinet provided by the utility model, the fin device further includes:

[0010] Partition plates, arranged in multiple numbers. Each partition plate is arranged vertically, and the multiple partition plates are sequentially arranged at intervals in the transverse direction between the top plate and the bottom plate to divide the battery cell accommodation cavity into multiple battery cell accommodation parts, and each battery cell accommodation part is used for accommodating battery cells.

[0011] According to the battery cabinet provided by the utility model, the partition plates, the top plate and the bottom plate are constructed as an integral structure;

[0012] And / or, each battery cell accommodation part is used for accommodating one or two battery cells.

[0013] According to the battery cabinet provided by the present utility model, the liquid cooling component includes a plate-shaped main body, and a liquid cooling channel for the coolant to flow is arranged inside the plate-shaped main body; the top plate is in fitting connection with the plate-shaped main body of the corresponding liquid cooling component, and the bottom plate is in fitting connection with the plate-shaped main body of the corresponding liquid cooling component.

[0014] According to the battery cabinet provided by the present utility model, the cabinet body includes:

[0015] A plurality of support legs, each of the support legs is connected to multiple layers of the liquid cooling components, and the plurality of support legs jointly support multiple layers of the liquid cooling components.

[0016] According to the battery cabinet provided by the present utility model, first connection structures are respectively arranged at two ends of the top plate, the first connection structures are located between two adjacent support legs, and the top plate is fixedly connected to the corresponding liquid cooling component through the first connection structures;

[0017] And / or, second connection structures are respectively arranged at two ends of the bottom plate, the second connection structures are located between two adjacent support legs, and the bottom plate is fixedly connected to the corresponding liquid cooling component through the second connection structures.

[0018] According to the battery cabinet provided by the present utility model, the first connection structure includes a first connection hole arranged on the top plate, and the top plate is connected to the corresponding liquid cooling component through a connecting piece inserted into the first connection hole;

[0019] The second connection structure includes a second connection hole arranged on the bottom plate, and the bottom plate is connected to the corresponding liquid cooling component through a connecting piece inserted into the second connection hole.

[0020] According to the battery cabinet provided by the present utility model, a liquid supply channel is arranged inside at least one of the support legs, and the outlet of the liquid supply channel is communicated with the liquid inlet ports of each liquid cooling component through a first joint; a liquid return channel is arranged inside at least one of the support legs, and the inlet of the liquid return channel is communicated with the liquid outlet ports of each liquid cooling component through a second joint.

[0021] According to the battery cabinet provided by the present utility model, the liquid inlet port of the liquid cooling component is located on the side of the support leg corresponding to the liquid supply channel where the outlet is arranged, and the liquid inlet port is located between two adjacent support legs;

[0022] And / or, the liquid outlet port of the liquid cooling component is located on the side of the support leg corresponding to the liquid return channel where the inlet is arranged, and the liquid outlet port is located between two adjacent support legs.

[0023] Second aspect, the present utility model provides an energy storage device, comprising:

[0024] The battery cabinet according to any one of the above;

[0025] A plurality of battery cells, respectively disposed in each of the battery cell accommodation cavities, and the surface of the battery cell without a pole column is in thermal contact with the top plate and the bottom plate.

[0026] Beneficial effects:

[0027] In the technical solution provided by the present utility model, the cabinet body is designed with multiple layers of liquid cooling components, and the space formed between adjacent layers of liquid cooling components is designed as a fin installation space. These spaces not only make reasonable use of the internal space of the cabinet body, but also provide a stable installation environment for the fin device. The fin device is provided with battery cell accommodation cavities for accommodating battery cells. The battery cells can be directly in contact with the fin device. The cavity walls of the battery cell accommodation cavities include opposite top plates and bottom plates, and these two plate surfaces are respectively thermally connected to their corresponding liquid cooling components. When the battery cells generate heat during operation, compared with the prior art where the heat generated by the battery cells can only be exchanged with the bottom liquid cooling component, in this solution, the heat can be quickly transferred to the liquid cooling component through the top plate and the bottom plate of the fin device, and then the heat is taken away by the cooling medium in the liquid cooling component. On the other hand, the fin device itself has a heat dissipation function and can dissipate the heat generated by the battery cells to the external environment. Therefore, the battery cabinet and the energy storage device provided by the present utility model can effectively improve the heat dissipation effect of the battery cabinet. Description of the drawings

[0028] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the structure of the battery cabinet according to an embodiment of the present utility model;

[0030] Figure 2 Schematic diagram of the structure of the battery cabinet and the battery cell according to an embodiment of the present utility model;

[0031] Figure 3 Schematic diagram of the structure of the cabinet body according to an embodiment of the present utility model;

[0032] Figure 4 Schematic diagram of the structure of the fin device according to an embodiment of the present utility model.

[0033] Explanation of the reference numerals in the drawings:

[0034] 11. Cabinet; 111. Liquid cooling component; 112. Support leg; 12. Fin device; 121. Top plate; 122. Bottom plate; 123. Partition; 124. First connection hole; 125. Second connection hole; 131. First joint; 132. Second joint; 14. Battery cell. Detailed implementation manner

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] As Figures 1 to 4 shown, a battery cabinet provided by an embodiment of the present utility model includes a cabinet 11 and a fin device 12.

[0037] Among them, the cabinet 11 includes multiple layers of liquid cooling components 111, which are arranged in sequence along the height direction of the cabinet 11, and a spacing is maintained between two adjacent liquid cooling components 111 to form a fin installation space between adjacent layers of liquid cooling components 111. It should be noted that the liquid cooling component 111 has a liquid cooling channel, and a cooling medium flows through it. Each layer of liquid cooling components 111 can be connected to the cabinet 11 by means of welding, threaded connection, pin connection, snap connection, etc.

[0038] The fin device 12 is arranged in each fin installation space. The fin device 12 is provided with a battery cell accommodation cavity for accommodating the battery cell 14. The cavity wall of the battery cell accommodation cavity includes opposite top plate 121 and bottom plate 122, and the top plate 121 and the bottom plate 122 are respectively in thermal connection with the liquid cooling component 111 opposite to them. The material of the fin device 12 can specifically be aluminum, copper, carbon steel, or other materials with good thermal conductivity. The thermal connection between the top plate 121 and the bottom plate 122 and the liquid cooling component 111 can be direct contact or indirect contact through a thermal medium.

[0039] In this embodiment, multiple liquid cooling components 111 are designed inside the cabinet body 11. These liquid cooling components 111 not only serve as the main heat dissipation elements but also provide an installation space for the fin device 12 through their structural layout. The spaces formed between adjacent layers of the liquid cooling components 111 are designed as fin installation spaces. These spaces not only make rational use of the space inside the cabinet body 11 but also provide a stable installation environment for the fin device 12. A battery cell accommodation cavity is provided inside the fin device 12 for accommodating the battery cells 14. This design enables the battery cells 14 to be in direct contact with the fin device 12, improving the heat dissipation efficiency. Moreover, the cavity walls of the battery cell accommodation cavity include opposite top plate 121 and bottom plate 122, and these two plate surfaces are respectively in thermal conduction connection with the opposite liquid cooling components 111. When the battery cells 14 generate heat during operation, the heat can be quickly transferred to the liquid cooling components 111 through the top plate 121 and the bottom plate 122, and then the cooling medium in the liquid cooling components 111 takes away the heat, thus achieving efficient heat dissipation.

[0040] With such an arrangement, on the one hand, the heat generated by the battery cells 14 is directly transferred to the liquid cooling components 111 through the top plate 121 and the bottom plate 122, reducing the thermal resistance in the heat transfer process and improving the heat dissipation efficiency. On the other hand, the fin device 12 itself has a heat dissipation function and can dissipate heat to the external environment. The fin device 12 effectively increases the heat dissipation area of the battery cells 14, and in this regard, it can also improve the heat dissipation efficiency.

[0041] Therefore, the battery cabinet provided in this embodiment realizes efficient heat dissipation of the battery cells 14 through the combined design of multiple liquid cooling components 111 and the fin device 12.

[0042] In a further embodiment, the fin device 12 further includes partition plates 123. The partition plates 123 can be provided in multiple numbers. For example, each fin device 12 can be provided with 4 - 8 partition plates 123. Each partition plate 123 is vertically arranged, that is, as Figure 4 shown, each partition plate 123 is erected between the top plate 121 and the bottom plate 122 of the fin device 12. The top end of the partition plate 123 is connected to the top plate 121, and the bottom end of the partition plate 123 is connected to the bottom plate 122. The multiple partition plates 123 are sequentially distributed horizontally as Figure 4 shown, and there is a spacing between adjacent partition plates 123, dividing the battery cell accommodation cavity into multiple battery cell accommodation parts, and each battery cell accommodation part is used for accommodating the battery cells 14.

[0043] It should be noted that each battery cell accommodating portion is a relatively independent space for accommodating the battery cell 14. This not only facilitates the installation and disassembly of the battery cell 14, but also helps to reduce the thermal interference between the battery cells 14 during the heat dissipation process, thereby improving the heat dissipation efficiency. In addition, the presence of the partition 123 increases the contact area between the battery cell 14 and the fin device 12, thus improving the heat transfer efficiency. At the same time, the partition 123 itself may also have certain heat conduction properties, further accelerating the diffusion of heat. As a support structure inside the battery cell accommodating cavity, the partition 123 enhances the overall strength and stability of the fin device 12. Under the influence of factors such as the weight or vibration of the battery cell 14, the partition 123 can keep the shape of the battery cell accommodating portion unchanged and prevent the battery cell 14 from being damaged.

[0044] With such a setting, by arranging a plurality of partitions 123 in the fin device 12 to separate the battery cell accommodating cavity, not only the heat dissipation effect is improved, but also the structural stability is enhanced.

[0045] In a further embodiment, one or two battery cells 14 are accommodated in each battery cell accommodating portion, so that at least one surface of each battery cell 14 can be in contact with the partition, thereby improving the heat dissipation efficiency.

[0046] In a further embodiment, the partition 123, the top plate 121 and the bottom plate 122 of the fin device 12 are constructed as an integral structure. For example, the partition 123, the top plate 121 and the bottom plate 122 can be formed into an integral structure through processing techniques such as casting, forging, and one-piece molding. Since the partition 123, the top plate 121 and the bottom plate 122 are designed as an integral structure, there are no seams or additional thermal resistance materials between the top plate 121 and the partition 123, and between the bottom plate 122 and the partition 123, and heat can be transferred more smoothly between them, which helps to transfer the heat generated by the battery cell 14 to the liquid cooling component 111 faster, thereby improving the heat dissipation efficiency. Moreover, the design of the integral structure improves the overall strength of the fin device 12, making it more resistant to external factors such as vibration and impact, and maintaining the stability and integrity of the structure.

[0047] It should be noted that the fin device 12 with such an integral structure provided in this embodiment is more suitable for battery cabinets with higher requirements for heat dissipation performance, structural strength and reliability. For example, in application scenarios such as electric vehicles and energy storage power stations, the battery cabinet needs to withstand complex working conditions and harsh environmental conditions, and the fin device 12 with an integral structure can better meet the above requirements.

[0048] In a further embodiment, the materials of the partition 123, the top plate 121 and the bottom plate 122 are aluminum, copper or carbon steel. It should be noted that in the design of the fin device 12 of the battery cabinet, the materials selected for the partition 123, the top plate 121 and the bottom plate 122 have an important impact on its heat dissipation performance, structural strength and other aspects.

[0049] The fin device 12 is made of aluminum, which is suitable for battery cabinets with high requirements for heat dissipation performance and lightweight, such as in the fields of electric vehicles and the like. While the fin device 12 is made of copper, which is suitable for occasions with high requirements for heat dissipation performance, such as high-power density energy storage power stations and the like. Since carbon steel has high strength and rigidity, it can ensure the structural stability of the battery cabinet, and carbon steel is suitable for occasions with high requirements for structural stability, relatively low cost requirements, and relatively low requirements for heat dissipation performance.

[0050] In a further embodiment, the liquid cooling component 111 includes a plate-shaped main body, and a liquid cooling channel for the coolant to flow is provided inside the plate-shaped main body; the top plate 121 is adhesively connected to the plate-shaped main body of the corresponding liquid cooling component 111, and the bottom plate 122 is adhesively connected to the plate-shaped main body of the corresponding liquid cooling component 111. In some embodiments, heat-conducting silicone grease can be respectively coated on the top plate 121 and the bottom plate 122, and the heat-conducting silicone grease can compensate for the fitting tolerance between the top plate 121 and the bottom plate 122 and the liquid cooling component 111, ensuring full adhesion between the top plate 121 and the bottom plate 122 and the liquid cooling component 111.

[0051] In this embodiment, the main body of the liquid cooling component 111 is designed in a plate shape, which is not only convenient for processing and installation, but also can provide a large heat dissipation area. A liquid cooling channel for the coolant to flow is provided inside the plate-shaped main body. The liquid cooling channel can be formed inside the plate-shaped main body by casting or machining. The liquid cooling channel is the channel for the coolant to circulate inside the liquid cooling component 111. The coolant flows in the channel under the action of an external coolant driving pump, absorbs and takes away the heat transferred from the top plate 121 and the bottom plate 122, thereby realizing the heat dissipation effect of the fin device 12. The top plate 121 of the fin device 12 is connected to the corresponding liquid cooling component 111 in a face-to-face adhesion manner. This connection method ensures close contact between the top plate 121 and the liquid cooling component 111, reduces the thermal resistance, and improves the efficiency of heat transfer. At the same time, the adhesion connection can also enhance the structural stability of the entire battery cabinet. Similar to the top plate 121, the bottom plate 122 is also connected to the corresponding liquid cooling component 111 in a face-to-face adhesion manner. This connection method enables the heat on the bottom plate 122 to be quickly transferred to the liquid cooling component 111 and taken away by the coolant.

[0052] With such a setting, the top plate 121 and the bottom plate 122 and the liquid cooling component 111 all adopt a face-to-face adhesion connection method, which reduces the thermal resistance, enables heat to be transferred from the top plate 121 and the bottom plate 122 to the liquid cooling component 111 more quickly, and is dissipated through the coolant. Moreover, the design of the adhesion connection makes the structure of the battery cabinet more compact, saving space. In addition, the adhesion connection enhances the structural stability of the battery cabinet, reduces the risk of component loosening or damage caused by vibration or impact, and improves the reliability and durability of the battery cabinet.

[0053] In a further embodiment, the cabinet body 11 includes a plurality of support legs 112, and each support leg 112 is connected to the multi-layer liquid cooling assembly 111. The plurality of support legs 112 jointly support the multi-layer liquid cooling assembly 111.

[0054] In this embodiment, the cabinet body 11 includes a plurality of support legs 112. Specifically, it may include four, six or eight support legs 112. The plurality of support legs 112 enclose a rectangle, and the liquid cooling assembly 111 can be set as a rectangular plate-like structure. Each layer of the liquid cooling assembly 111 can be fixedly connected to each support leg 112 by welding.

[0055] In a further embodiment, first connection structures are respectively arranged at both ends of the top plate 121. The first connection structures are located between two adjacent support legs 112. The top plate 121 is fixedly connected to the liquid cooling assembly 111 opposite thereto through the first connection structures;

[0056] And / or, second connection structures are respectively arranged at both ends of the bottom plate 122. The second connection structures are located between two adjacent support legs 112. The bottom plate 122 is fixedly connected to the liquid cooling assembly 111 opposite thereto through the second connection structures.

[0057] In this embodiment, first connection structures are respectively arranged at both ends of the top plate 121. The first connection structures can be, but are not limited to, bolt holes, buckles, welding points or any other mechanical structures capable of achieving a firm connection. The top plate 121 is fixedly connected to the corresponding liquid cooling assembly 111 through the first connection structures, ensuring close contact between the top plate 121 and the liquid cooling assembly 111, thereby improving the efficiency of heat transfer from the battery cells 14 through the top plate 121 to the liquid cooling assembly 111. Similarly, second connection structures are respectively arranged at both ends of the bottom plate 122. The bottom plate 122 is fixedly connected to the corresponding liquid cooling assembly 111 through the second connection structures, ensuring good contact between the bottom plate 122 and the liquid cooling assembly 111, which helps with effective heat transfer.

[0058] With such an arrangement, the top plate 121 and the bottom plate 122 can achieve firm connection with the corresponding liquid cooling assemblies 111. The firm connection structure can ensure that the top plate 121 and the bottom plate 122 will not become loose or displaced due to vibration or temperature changes during the operation of the battery cabinet, thus ensuring the stability and reliability of the heat dissipation effect. Moreover, the close and firm contact can reduce the thermal resistance, improve the efficiency of heat transfer from the battery cells 14 through the top plate 121 and the bottom plate 122 to the liquid cooling assembly 111, and further enhance the heat dissipation performance of the entire battery cabinet.

[0059] And in this embodiment, the first connection structure and / or the second connection structure are located between two adjacent support legs, which can make full use of the space between the support legs and improve the space utilization rate.

[0060] In a further embodiment, the first connection structure includes a first connection hole 124 provided on the top plate 121. The top plate 121 is connected to its corresponding liquid cooling component 111 through a connecting member inserted into the first connection hole 124; the second connection structure includes a second connection hole 125 provided on the bottom plate 122. The bottom plate 122 is connected to its corresponding liquid cooling component 111 through a connecting member inserted into the second connection hole 125.

[0061] In some embodiments, at least two first connection holes 124 are respectively provided at both ends of the top plate 121 of the fin device 12. The top plate 121 is connected to its corresponding liquid cooling component 111 through a connecting member inserted into the first connection hole 124. The connecting member can be a bolt, a pin or other similar fasteners. After the connecting member is inserted into the first connection hole 124 and fastened, the top plate 121 can be firmly fixed on the liquid cooling component 111. This connection method is simple and reliable, and is easy to disassemble, assemble and maintain.

[0062] The connection structure of the bottom plate 122 of the fin device 12 is similar to that of the top plate 121. Second connection holes 125 are also respectively provided at both ends of the bottom plate 122. These connection holes are the same in function as the first connection holes 124 and are used to realize the connection between the bottom plate 122 and the liquid cooling component 111.

[0063] With such a setting, the connection between the top plate 121 and the bottom plate 122 and the liquid cooling component 111 is realized through the connecting member inserted into the connection hole, ensuring the stability of the connection. This connection method can withstand the vibration and impact generated during the operation of the battery cabinet and maintain the stability of the heat dissipation structure. Moreover, the connecting member is easy to disassemble and assemble, making the replacement or maintenance of the top plate 121 and the bottom plate 122 more convenient. When it is necessary to clean or replace the heat dissipation components, the connecting member can be conveniently removed, and the top plate 121 and the bottom plate 122 can be separated from the liquid cooling component 111.

[0064] In a further embodiment, a liquid supply channel is provided inside at least one support leg 112. The liquid supply channel is communicated with the liquid inlet ports of the respective liquid cooling components 111 through a first joint 131; a liquid return channel is provided inside at least one support leg 112. The liquid return channel is communicated with the liquid outlet ports of the respective liquid cooling components 111 through a second joint 132.

[0065] In this embodiment, the support leg 112 is not only used to support the weight of the entire cabinet 11, but at least one support leg 112 is designed to include a liquid supply channel inside, and at least another support leg 112 is designed to include a liquid return channel inside. It should be noted that the liquid supply channel and the liquid return channel are independent of each other, but are both connected to an external cooling system to realize the circulating flow of the coolant.

[0066] The liquid supply channel is communicated with the liquid inlet ports of each liquid cooling component 111 through the first connector 131. When the external cooling system is started, the coolant enters the liquid supply channel through the pumping function of the external cooling system, and then is distributed to the liquid inlet ports of each liquid cooling component 111 through the first connector 131. In this way, the coolant can enter each liquid cooling component 111 evenly and start its heat dissipation process.

[0067] The liquid return channel is communicated with the liquid outlet ports of each liquid cooling component 111 through the second connector 132. After the heat dissipation task is completed, the coolant flows out from the liquid outlet port of the liquid cooling component 111, enters the liquid return channel through the second connector 132, and then the coolant is collected and sent back to the external cooling system for recirculation or treatment.

[0068] With such a setting, in this embodiment, the liquid supply channel and the liquid return channel are integrated inside the support leg 112, which can not only avoid arranging a large number of pipelines outside the cabinet body 11, but also make the structure of the whole battery cabinet more compact and save space.

[0069] In a further embodiment, the liquid inlet port of the liquid cooling component 111 is located on the side of the support leg 112 corresponding to the liquid supply channel where the outlet is provided, and the liquid inlet port is located between two adjacent support legs 112; the liquid outlet port of the liquid cooling component 111 is located on the side of the support leg 112 corresponding to the liquid return channel where the inlet is provided, and the liquid outlet port is located between two adjacent support legs 112. With such a setting, the connection ports between the support leg 112 and the liquid cooling component 111 are relatively close, the lengths of the first connector 131 and the second connector 132 are shorter, and the first connector 131 and the second connector 132 are located between two adjacent support legs, which can make full use of the space between the support legs, make the overall structure more compact and save space.

[0070] The embodiment of the present utility model also provides an energy storage device, which includes a battery cabinet and a plurality of battery cells 14. Among them, the battery cabinet adopts the battery cabinet in any one of the above embodiments, and the plurality of battery cells 14 are respectively arranged in the respective battery cell accommodating cavities of the battery cabinet. The surface of the battery cell 14 without a pole post is in thermal contact with the top plate 121 and the bottom plate 122. Among them, the thermal contact setting can be direct contact or indirect contact through a heat-conducting medium. Since the pole posts for supplying current input and output are usually arranged on the battery cell 14 and the pole posts are used to connect with external structural members, setting the surface of the battery cell 14 without a pole post in thermal contact with the top plate 121 and the bottom plate 122 can avoid the interference of the pole posts and improve the heat exchange efficiency.

[0071] It should be noted that the energy storage device provided in this embodiment can be applied to scenarios such as household energy storage, industrial energy storage, charging station energy storage, and communication base station energy storage. With such a setting, the energy storage device provided in this embodiment has good heat dissipation performance. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought by the above battery cabinet, and will not be elaborated here.

[0072] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery cabinet, characterized in that, Comprising: A cabinet body (11), including multiple layers of liquid cooling components (111), with a fin installation space formed between adjacent layers of the liquid cooling components (111); A fin device (12), arranged in each of the fin installation spaces, the fin device (12) being provided with a battery cell accommodation cavity for accommodating battery cells (14), the cavity wall of the battery cell accommodation cavity including an opposite top plate (121) and bottom plate (122), the top plate (121) and the bottom plate (122) being respectively in thermally conductive connection with the liquid cooling component (111) opposite to them.

2. The battery cabinet according to claim 1, characterized in that, The fin device (12) further includes: Partition plates (123), provided in a plurality, each of the partition plates (123) being vertically arranged, and the plurality of partition plates (123) being sequentially arranged at intervals in the transverse direction between the top plate (121) and the bottom plate (122) to divide the battery cell accommodation cavity into a plurality of battery cell accommodation parts, each of the battery cell accommodation parts being used for accommodating battery cells (14).

3. The battery cabinet according to claim 2, characterized in that, The partition plates (123), the top plate (121) and the bottom plate (122) are constructed as an integral structure; And / or, each of the battery cell accommodation parts is used for accommodating one or two battery cells (14).

4. The battery cabinet according to claim 1, wherein, The liquid cooling component (111) includes a plate-shaped main body, and a liquid cooling channel for the flow of coolant is provided inside the plate-shaped main body; the top plate (121) is in fitting connection with the plate-shaped main body of the corresponding liquid cooling component (111), and the bottom plate (122) is in fitting connection with the plate-shaped main body of the corresponding liquid cooling component (111).

5. The battery cabinet according to claim 1, wherein, The cabinet body (11) includes: A plurality of support legs (112), each of the support legs (112) being connected to multiple layers of the liquid cooling components (111), and the plurality of support legs (112) jointly supporting multiple layers of the liquid cooling components (111).

6. The battery cabinet according to claim 5, characterized in that, Both ends of the top plate (121) are respectively provided with a first connection structure, the first connection structure being located between two adjacent support legs (112), and the top plate (121) is fixedly connected to the corresponding liquid cooling component (111) through the first connection structure; And / or, both ends of the bottom plate (122) are respectively provided with a second connection structure, the second connection structure being located between two adjacent support legs (112), and the bottom plate (122) is fixedly connected to the corresponding liquid cooling component (111) through the second connection structure.

7. The battery cabinet according to claim 6, characterized in that, The first connection structure includes a first connection hole (124) provided on the top plate (121), and the top plate (121) is connected to the corresponding liquid cooling component (111) through a connecting member inserted into the first connection hole (124); The second connection structure includes a second connection hole (125) provided on the bottom plate (122), and the bottom plate (122) is connected to the corresponding liquid cooling component (111) through a connecting member inserted into the second connection hole (125).

8. The battery cabinet according to claim 5, characterized in that, At least one of the support legs (112) is internally provided with a liquid supply channel, and the outlet of the liquid supply channel is communicated with the liquid inlet ports of the respective liquid cooling components (111) through a first connector (131); at least one of the support legs (112) is internally provided with a liquid return channel, and the inlet of the liquid return channel is communicated with the liquid outlet ports of the respective liquid cooling components (111) through a second connector (132).

9. The battery cabinet according to claim 8, characterized in that, The liquid inlet port of the liquid cooling component (111) is located on the side of the support leg (112) corresponding to the liquid supply channel where the outlet is provided, and the liquid inlet port is located between two adjacent support legs (112); and / or, the liquid outlet port of the liquid cooling component (111) is located on the side of the support leg (112) corresponding to the liquid return channel where the inlet is provided, and the liquid outlet port is located between two adjacent support legs (112).

10. An energy storage device, characterized in that, Comprising: The battery cabinet according to any one of claims 1-9; A plurality of battery cells (14) are respectively arranged in the respective battery cell accommodating cavities, and the surface of the battery cell (14) without a pole column is in thermal contact with the top plate (121) and the bottom plate (122).

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