Support structure, battery device and energy storage system

Abstract

The utility model relates to the technical field of battery cabinets, and discloses a supporting structure, a battery device and an energy storage system, the supporting structure comprises a load-bearing frame (101), the load-bearing frame defines a first mounting part; the bearing frame (101) is provided with a first installation part, the limiting support (102) is assembled on the first installation part, the limiting support (102) is connected to the bearing frame (101), the limiting support (102) is of an insulation structure, the bearing frame (101) and the limiting support (102) are suitable for defining a second installation part, and the second installation part is suitable for installing a battery device (2). The supporting structure can ensure that no interference exists between the electric connection interface and the limiting support, and the reliability of electric signal output is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cabinets, and specifically, to a support structure. In addition, it also relates to a battery device and an energy storage system. Background Art

[0002] In traditional technologies, battery devices are widely used. In existing battery devices, multiple battery devices are arranged on a support frame. Since the support frame is usually a conductive structure, interference is likely to occur between the electrical connection structure of the housing and the support frame, and the support frame affects the output of electrical signals, resulting in low reliability. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a support structure, which sets the limiting bracket as an insulating bracket, thereby improving the safety of a high-voltage insulation-proof battery cabinet, and having a simpler structure and lower manufacturing cost. The second purpose of the utility model is to provide a battery device and an energy storage system.

[0004] To achieve the above purposes, the first aspect of the utility model provides a support structure, including:

[0005] A load-bearing frame that defines a first installation part; and

[0006] A limiting bracket that is assembled in the first installation part, the limiting bracket is connected to the load-bearing frame, the limiting bracket is an insulating structure, and the load-bearing frame and the limiting bracket are adapted to define a second installation part, and the second installation part is adapted to install a battery device.

[0007] In some embodiments, the load-bearing frame includes a frame bottom support and side frames connected to both side edges of the frame bottom support, and the side frames and the frame bottom support can enclose a U shape.

[0008] In some embodiments, the limiting bracket includes a front limiting cross beam, a rear limiting cross beam, and a fixed beam, and both ends of the fixed beam are respectively connected to the front limiting cross beam and the rear limiting cross beam.

[0009] In some embodiments, the limiting bracket is a non-metallic structural member; or

[0010] The limiting bracket is a metallic structural member, and an insulating layer is provided on the outside of the metallic structural member.

[0011] In some embodiments, the limiting bracket further includes a plurality of front limiting fixed adapter blocks connected to the upper end surface of the front limiting cross beam.

[0012] In some embodiments, at least one of the front limiting cross beam, the rear limiting cross beam, and the fixed beam is formed by using a non-metallic material;

[0013] Alternatively, at least one of the front limiting crossbeam, the rear limiting crossbeam, and the fixed beam is formed of a metal material, and the metal material is coated with an insulating material.

[0014] The second aspect of the present utility model provides a battery device, including:

[0015] The support structure according to any one of the above technical solutions;

[0016] A battery cabinet housing, which is adapted to form a receiving cavity, and the support structure is arranged in the receiving cavity;

[0017] A battery device, which includes a battery, and the battery device is arranged on the limiting bracket.

[0018] In some embodiments, the battery cell is in direct contact with the cooling medium.

[0019] In some embodiments, it further includes a battery control box, which is arranged at the top of the load-bearing frame, and the battery control box is electrically connected to each battery device.

[0020] In some embodiments, the battery cabinet housing includes side plates, a back plate, a top plate, and a battery cabinet door. The battery cabinet door is hinged to the load-bearing frame, and a high-voltage output main power interface is arranged on the top plate.

[0021] In some embodiments, the battery device further includes a battery lower housing and a battery upper cover connected to the battery lower housing, and at least one of the battery lower housing and the battery upper cover is made of a non-metallic material.

[0022] In some embodiments, a liquid cooling interface is arranged on at least one side surface of the battery lower housing, and the communication interface and the voltage segmentation interface are arranged on opposite sides of the liquid cooling interface.

[0023] In some embodiments, a plurality of protruding structures are arranged on both sides of the inner surface of the lower part of the battery lower housing, and each protruding structure is arranged along the length direction of the battery cell.

[0024] In some embodiments, a liquid cooling pipeline is arranged in the battery cabinet housing. The two ends of the liquid cooling pipeline are provided with a liquid cooling inlet and a liquid cooling outlet, and both the liquid cooling inlet and the liquid cooling outlet are located at the lower part of the battery cabinet housing.

[0025] The third aspect of the present utility model provides an energy storage system, including the battery device according to any one of the technical solutions in the second aspect.

[0026] With the above technical solution, the support structure of the present utility model sets the load-bearing frame as a metal frame structure, and the limiting bracket as an insulating bracket. The limiting bracket is set as a multi-layer structure, and the battery device is arranged on each layer of insulating bracket. There is no interference between the electrical connection interface of the battery device and the insulating bracket, improving the reliability of electrical signal output.

[0027] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation section. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only 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 is one of the structural schematic diagrams of the high-voltage insulation-proof battery cabinet in the specific embodiment of the present utility model;

[0030] Figure 2 is the second structural schematic diagram of the high-voltage insulation-proof battery cabinet in the specific embodiment of the present utility model;

[0031] Figure 3 is the third structural schematic diagram of the high-voltage insulation-proof battery cabinet in the specific embodiment of the present utility model, which shows the internal structure without side plates, back plates and the battery cabinet door;

[0032] Figure 4 is the fourth structural schematic diagram of the high-voltage insulation-proof battery cabinet in the specific embodiment of the present utility model, and the installation structural schematic diagram with only one battery device is shown in the figure;

[0033] Figure 5 is Figure 4 the back structural schematic diagram;

[0034] Figure 6 is the installation structural schematic diagram of the load-bearing frame, limiting bracket and battery device in the specific embodiment of the present utility model;

[0035] Figure 7 is Figure 6 the exploded view;

[0036] Figure 8 is the structural schematic diagram of the battery device in the specific embodiment of the present utility model;

[0037] Figure 9 is Figure 8 the exploded view;

[0038] Figure 10 It is a schematic structural diagram of the battery lower housing in a specific embodiment of the present utility model.

[0039] Explanation of the reference numerals in the drawings

[0040] 1 - Battery cabinet housing; 101 - Load-bearing frame; 1011 - Frame bottom support; 1012 - Side frame; 102 - Limit bracket; 1021 - Front limit crossbeam; 1022 - Front limit fixed adapter block; 1023 - Rear limit crossbeam; 1024 - Fixed beam; 103 - Side plate; 104 - Rear plate; 105 - Top plate; 106 - Battery cabinet door

[0041] 2 - Battery device; 201 - Battery lower housing; 202 - Battery cell; 203 - Battery upper cover; 204 - Protrusion structure

[0042] 3 - High-voltage output total power interface

[0043] 401 - Liquid cooling inlet; 402 - Liquid cooling outlet

[0044] 5 - System grounding port

[0045] 6 - Communication interface

[0046] 7 - Liquid cooling interface

[0047] 8 - Voltage segmentation interface

[0048] 9 - Battery control box Specific embodiments

[0049] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The detailed description and drawings of the following examples are used to exemplarily illustrate the principle of the present utility model, but cannot be used to limit the scope of the present utility model. The present utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0050] These embodiments of the present utility model are provided to make the present utility model thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the compositions of the materials, the numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0051] It should be noted that in the description of the present utility model, unless otherwise specified, the indicated orientation or positional relationship is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] In addition, the "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0053] It should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0054] All terms used in the present utility model have the same meanings as understood by those of ordinary skill in the art to which the present utility model pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0055] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods and devices should be regarded as part of the specification.

[0056] As Figures 1 to 7 shown, the basic embodiment of the present utility model provides a support structure including:

[0057] A load-bearing frame 101, the load-bearing frame defining a first mounting portion; and

[0058] The limiting bracket 102 is assembled to the first mounting portion, connected to the load-bearing frame 101, and is an insulating structure. The load-bearing frame 101 and the limiting bracket 102 are adapted to define a second mounting portion, and the second mounting portion is adapted to mount the battery device 2.

[0059] In the present utility model, the support structure includes a load-bearing frame 101 and a limiting bracket 102. The load-bearing frame 101 is used to bear all the weights of the battery device 2 and the battery control box 9, while the limiting bracket 102 is connected to the load-bearing frame 101. On the one hand, it is used for the installation of the battery device 2, and on the other hand, it can also reinforce the structure of the load-bearing frame 101 to further improve the load-bearing capacity of the load-bearing frame 101. Using the limiting bracket 102 to limit and install the battery device 2 can not only effectively control the creepage distance between the communication interface 6 and the voltage segmentation interface 8 between two adjacent battery devices 2, ensuring the maximization of this creepage distance. At the same time, it also effectively ensures the maximization of the creepage distance between the battery device 2 and the load-bearing frame 101 in the horizontal direction.

[0060] It should be noted that for the application scenario of the battery device with a high voltage of 10 KV in the above-mentioned technical solution, the embodiment effectively solves the safety dimension problems of the electrical clearance and creepage distance between the voltage segmentation interface 8 and the communication interface 6 and surrounding metal components such as the load-bearing frame 101.

[0061] In addition, it can be imagined that the limiting bracket 102 of the present utility model can not only adopt an insulating bracket, but also form some structures in the limiting bracket 102 with metal components, but an insulating layer needs to be coated on the surface of the metal components to achieve the above technical effects of the present utility model.

[0062] In some embodiments, the load-bearing frame 101 includes a frame bottom support 1011 and side frames 1012 connected to both side edges of the frame bottom support 1011, and the side frames 1012 and the frame bottom support 1011 can enclose a U shape.

[0063] Specifically, as Figure 6 shown, the load-bearing frame 101 includes a frame bottom support 1011 and side frames 1012. The frame bottom support 1011 is formed by welding rectangular steel pipes. The side frames 1012 include side frame vertical rods connected to the frame bottom support 1011 and a plurality of parallel side frame cross bars connected between the two side frame vertical rods. The distance between two adjacent side frame cross bars can be set according to the height of the battery device 2 or according to the actual strength usage requirements.

[0064] In some embodiments, as Figure 7As shown, the limit bracket 102 includes a front limit cross beam 1021, a rear limit cross beam 1023, and a fixed beam 1024. Both ends of the fixed beam 1024 are respectively connected to the front limit cross beam 1021 and the rear limit cross beam 1023.

[0065] Specifically, as Figure 7 shown, the horizontal front limit cross beam 1021 is connected to the front end face of the side frame 1012, the horizontal rear limit cross beam 1023 is connected to the rear end face of the horizontal rear limit cross beam 1023, and the horizontal front limit cross beam 1021 and the horizontal rear limit cross beam 1023 are arranged in one-to-one correspondence. At least two horizontal fixed beams 1024 are connected to the horizontal front limit cross beam 1021 and the horizontal rear limit cross beam 1023 on the same horizontal plane, and are equidistantly arranged at the left and right ends of the horizontal front limit cross beam 1021. A plurality of horizontal front limit fixed adapter blocks 1022 are also provided on a single horizontal front limit cross beam 1021. The inner end face of the horizontal front limit fixed adapter block 1022 abuts against the side of the battery device 2 for limiting the battery device 2. It can be imagined that the distance between the two horizontal front limit cross beams 1021 in the up and down direction is determined according to the height of the battery device 2 and the actual required creepage distance.

[0066] The specific installation process of the limit bracket 102 is as follows: First, fix the horizontal front limit cross beam 1021 and the horizontal rear limit cross beam 1023 on the side frames 1012 on both sides of the same layer; then, fix both ends of the plurality of horizontal fixed beams 1024 to the horizontal front limit cross beam 1021 and the horizontal rear limit cross beam 1023 respectively; finally, arrange the horizontal front limit fixed adapter blocks 1022 in one-to-one correspondence at the front end of the horizontal fixed beam 1024. A plurality of grooves are provided on the lower end face of the battery device 2, which can correspond to the horizontal fixed beams 1024 one by one, so as to snap the battery device 2 onto the horizontal fixed beams 1024, realize the left and right direction limit of the battery device 2, and use the horizontal front limit fixed adapter blocks 1022 to limit the battery device 2 in the front and rear directions.

[0067] It can be imagined that during the assembly process of the battery device 2, it can slide and install along the horizontal fixed beam 1024 to ensure that there is no structural interference during the installation of the battery device 2.

[0068] In some embodiments, the limit bracket 102 is a non-metallic structural member; or the limit bracket 102 is a metallic structural member, and an insulating layer is provided on the outside of the metallic structural member.

[0069] In some embodiments, the limit bracket 102 further includes a plurality of front limit fixed adapter blocks 1022 connected to the upper end face of the front limit cross beam 1021.

[0070] In some embodiments, at least one of the front limit cross beam 1021, the rear limit cross beam 1023, and the fixed beam 1024 is formed of a non-metallic material;

[0071] Alternatively, at least one of the front limit cross beam 1021, the rear limit cross beam 1023, and the fixed beam 1024 is formed of a metal material, and the metal material is coated with an insulating material.

[0072] The basic embodiment of the present utility model provides a battery device, including:

[0073] The support structure according to any one of the above technical solutions;

[0074] A battery cabinet housing 1, the battery cabinet housing 1 is adapted to form a receiving cavity, and the support structure is arranged in the receiving cavity;

[0075] A battery device 2, the battery device 2 includes a battery, the battery device 2 is arranged on the limit bracket 102, and the battery device 2 is adapted to abut against the front limit fixed adapter block 1022.

[0076] In some embodiments, the battery cell 202 is in direct contact with the cooling medium.

[0077] In some embodiments, it further includes a battery control box 9, the battery control box 9 is arranged at the top end of the load-bearing frame 101, and the battery control box 9 is electrically connected to each battery device 2.

[0078] In some embodiments, the battery cabinet housing 1 includes a side plate 103, a back plate 104, a top plate 105, and a battery cabinet door 106. The battery cabinet door 106 is hinged to the load-bearing frame 101, and a high-voltage output total power interface 3 is arranged on the top plate 105.

[0079] In some embodiments, the battery device 2 includes a battery lower housing 201, a plurality of battery cells 202 arranged in the battery lower housing 201, and a battery upper cover 203 connected to the battery lower housing 201. At least one of the battery lower housing 201 and the battery upper cover 203 is made of a non-metallic material.

[0080] Specifically, considering the convenience of segmented and communication cable maintenance, the battery device 2 slides along the D direction, that is, the front-rear direction of the battery cabinet, for installation. Therefore, the communication interface 6, the liquid cooling interface 7, and the voltage segmentation interface 8 are all arranged on the front end face of the battery device 2.

[0081] More specifically, a plurality of battery cells 202 are connected in series along the D direction to form a module and placed in the battery lower housing 201. As Figure 8As shown, in the design dimensions of the battery device 2, H < D and H < W. More specifically, 1.1W < D < 2W and 80 mm < H ≤ 150 mm, so that the distance from the battery cell 202 to the lower battery housing 201 can be minimized, improving the volume utilization rate.

[0082] In some embodiments, a liquid cooling interface 7 is provided on at least one side of the lower battery housing 201, and the communication interface 6 and the voltage segmentation interface 8 are arranged on opposite sides of the liquid cooling interface 7.

[0083] In some embodiments, a plurality of convex structures 204 are provided on both sides of the inner surface of the lower part of the lower battery housing 201, and each of the convex structures 204 is arranged along the length direction of the battery cell 202.

[0084] In some embodiments, a liquid cooling pipeline is provided in the battery cabinet housing 1. Liquid cooling inlets 401 and liquid cooling outlets 402 are provided at both ends of the liquid cooling pipeline, and both the liquid cooling inlets 401 and the liquid cooling outlets 402 are located at the lower part of the battery cabinet housing 1.

[0085] In some embodiments, a system grounding port 5 is further provided on one side of the liquid cooling inlet 401 or the liquid cooling outlet 402.

[0086] A preferred embodiment of the present utility model provides an energy storage system provided with the battery device described in any one of the above technical solutions.

[0087] To better understand the technical concept of the present utility model, the preferred technical solutions of the present utility model will be described below in combination with relatively comprehensive technical features.

[0088] As Figures 1 to 10As shown in the figure, a preferred embodiment of the present utility model provides an electrical device, which includes a support structure. A battery device 2, a battery cabinet housing 1, and a battery control box 9 are provided on the support structure. The support structure includes a load-bearing frame 101 and a limit bracket 102. The battery cabinet housing 1 includes a side plate 103, a back plate 104, a top plate 105, and a battery cabinet door 106. The battery cabinet door 106 is hinged to the load-bearing frame 101. The load-bearing frame 101 is a metal frame structure, and the limit bracket 102 is an insulating bracket. The battery device 2 is connected to the limit bracket 102. The battery control box 9 is arranged on the top of the load-bearing frame 101 and is electrically connected to each battery device 2. The load-bearing frame 101 includes a frame bottom support 1011 and side frames 1012 connected to the two side edges of the frame bottom support 1011. The side frames 1012 and the frame bottom support 1011 can enclose a U shape. The limit bracket 102 includes a front limit cross beam 1021, a plurality of front limit fixed adapter blocks 1022 connected to the upper end surface of the front limit cross beam 1021, a rear limit cross beam 1023, and a fixed beam 1024. The two ends of the fixed beam 1024 are respectively connected to the front limit cross beam 1021 and the rear limit cross beam 1023. The plurality of fixed beams 1024 are parallel to each other. A plurality of grooves are provided on the lower end surface of the battery device 2, which can correspond to the fixed beams 1024 one by one. The battery device 2 can be pushed from front to back into the battery cabinet housing 1. The two end surfaces of the battery device 2 can abut against the ends of the front limit fixed adapter blocks 1022 to realize the front-back direction limit of the battery device 2. Two high-voltage output total power interfaces 3 are provided on the top plate 105, namely a positive interface and a negative interface. The battery device 2 includes a battery lower housing 201, a plurality of battery cells 202 arranged in the battery lower housing 201, and a battery upper cover 203 connected to the battery lower housing 201. A communication interface 6, a liquid cooling interface 7, and a voltage segmentation interface 8 are provided on the front end surface of the battery lower housing 201. A plurality of convex structures 204 are provided on both sides of the inner surface of the lower part of the battery lower housing 201. Each convex structure 204 is arranged along the length direction of the battery cells 202. Both the battery lower housing 201 and the battery upper cover 203 are formed of non-metals. The plurality of battery cells 202 are connected in series into a module along the D direction.

[0089] The load-bearing frame 101 of the high-voltage insulation battery cabinet of the present utility model adopts a metal frame structure, while the limit bracket 102 adopts an insulating bracket structure. The battery device 2 is arranged on the limit bracket 102, which can effectively control the creepage distance between the communication interface 6 and the voltage segmentation interface 8 between two adjacent battery devices 2, ensure the maximization of this creepage distance, and effectively ensure the maximization of the creepage distance between the battery device 2 and the load-bearing frame 101 in the horizontal direction.

[0090] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, including the combination of each specific technical feature in any suitable manner. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods. But these simple modifications and combinations should equally be regarded as the content disclosed by the present utility model and all fall within the protection scope of the present utility model.

Claims

1. A support structure, characterized in that, Comprising: A load-bearing frame (101) that defines a first mounting portion; And A limit bracket (102) that is assembled to the first mounting portion, the limit bracket (102) is connected to the load-bearing frame (101), the limit bracket (102) is an insulating structure, and the load-bearing frame (101) and the limit bracket (102) are adapted to define a second mounting portion, and the second mounting portion is adapted to mount a battery device (2).

2. The support structure according to claim 1, wherein The load-bearing frame (101) includes a frame bottom support (1011) and side frames (1012) connected to both side edges of the frame bottom support (1011), and the side frames (1012) and the frame bottom support (1011) can enclose a U shape.

3. The support structure according to claim 2, characterized in that, The limit bracket (102) includes a front limit cross beam (1021), a rear limit cross beam (1023), and a fixed beam (1024), and both ends of the fixed beam (1024) are respectively connected to the front limit cross beam (1021) and the rear limit cross beam (1023).

4. The support structure according to claim 3, characterized in that, The limit bracket (102) is a non-metallic structural member; or The limit bracket (102) is a metallic structural member, and an insulating layer is provided on the outside of the metallic structural member.

5. The support structure according to claim 3, characterized in that, The limit bracket (102) further includes a plurality of front limit fixing adapter blocks (1022) connected to the upper end surface of the front limit cross beam (1021).

6. The support structure according to claim 3, characterized in that, At least one of the front limit cross beam (1021), the rear limit cross beam (1023), and the fixed beam (1024) is formed of a non-metallic material; Or, at least one of the front limit cross beam (1021), the rear limit cross beam (1023), and the fixed beam (1024) is formed of a metallic material, and the metallic material is coated with an insulating material.

7. A battery device, characterized in that, Comprising: The support structure according to any one of claims 1 to 6; A battery cabinet housing (1) that is adapted to form a receiving cavity, and the support structure is provided in the receiving cavity; A battery device (2) that includes a battery cell (202), and the battery device (2) is provided on the limit bracket (102).

8. The battery device according to claim 7, characterized in that, The battery cell (202) is in direct contact with a cooling medium.

9. The battery device according to claim 7, characterized in that, It further includes a battery control box (9) that is provided at the top end of the load-bearing frame (101), and the battery control box (9) is electrically connected to each battery device (2).

10. The battery device according to claim 7, characterized in that, The battery cabinet housing (1) includes a side plate (103), a back plate (104), a top plate (105), and a battery cabinet door (106), the battery cabinet door (106) is hinged to the load-bearing frame (101), and a high-voltage output main power interface (3) is provided on the top plate (105).

11. The battery device according to any one of claims 7 to 10, characterized in that, The battery device (2) further includes a battery lower housing (201) and a battery upper cover (203) connected to the battery lower housing (201), and at least one of the battery lower housing (201) and the battery upper cover (203) is made of a non-metallic material.

12. The battery device according to claim 11, characterized in that, At least one side of the lower battery housing (201) is provided with a liquid cooling interface (7), and a communication interface (6) and a voltage segmentation interface (8) are arranged on opposite sides of the liquid cooling interface (7).

13. The battery device according to claim 12, characterized in that, On both sides of the inner surface of the lower part of the lower battery housing (201), a plurality of convex structures (204) are provided, and each of the convex structures (204) is arranged along the length direction of the battery cell (202).

14. The battery device according to claim 11, wherein A liquid cooling pipeline is arranged in the battery cabinet housing (1), and a liquid cooling inlet (401) and a liquid cooling outlet (402) are arranged at both ends of the liquid cooling pipeline.

15. A energy storage system, characterized in that, The battery device according to any one of claims 7 to 14 is provided.

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