A battery structure

Abstract

The utility model discloses a battery structure which comprises a shell, a receiving cavity and an opening communicated with the receiving cavity, a cover plate connected with the shell and covering the opening, at least one partition plate arranged in the receiving cavity and connected with the bottom wall and the side wall of the shell, the partition plate separating the receiving cavity into multiple layers, and a core package arranged in the layers and in contact with the surface of the adjacent partition plate.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery structure. Background Technology

[0002] With the widespread application of lithium-ion batteries in new energy vehicles, energy storage systems, and portable electronic devices, battery safety and structural stability have gradually become key concerns. As the core component of a single battery cell, the cell inevitably undergoes internal gas generation, thermal expansion, and volume changes during long-term charge-discharge cycles due to internal electrochemical reactions and side reactions. Especially under high-rate or high-temperature conditions, the cell is prone to significant expansion and deformation.

[0003] Typically, battery cells are installed in rigid metal casings or module structures. The expanded cells continuously exert external forces on the surrounding structure. Especially in modules using multiple stacked cells, the accumulated expansion forces, over a long period, can cause plastic deformation of the casing material, stress concentration, and even crack propagation or structural damage. Furthermore, structural damage to the casing not only affects the battery's mechanical strength but can also lead to safety hazards such as seal failure, electrolyte leakage, and internal short circuits.

[0004] Therefore, how to effectively alleviate the continuous pressure on the casing caused by the expansion and deformation of the battery cell, and improve the structural durability and safety reliability of the battery system, has become a key technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One objective of this invention is to provide a battery structure that addresses the technical problem of effectively mitigating the damage to the casing caused by cell expansion and deformation.

[0006] To achieve the above objectives, the present invention provides a solution as follows: a battery structure comprising a housing having a receiving cavity and an opening communicating with the receiving cavity; a cover plate connected to the housing and sealing the opening; at least one separator plate disposed within the receiving cavity and connected to the bottom wall and side wall of the housing, the separator plate dividing the receiving cavity into multiple compartments; and a core pack disposed within the compartments, the core pack contacting the surface of adjacent separator plates.

[0007] Optionally, along the height direction of the shell, the height of the partition is greater than the height of the core package, and the height of the partition is less than the height of the shell.

[0008] Optionally, the battery structure also includes an elastic portion, which is elastic and covers both sides of the separator. The cell pack contacts the separator through the elastic portion.

[0009] Optionally, the elastic part includes multiple independent protruding units, which are spaced apart on the surface of the partition.

[0010] Optionally, the distribution density of protruding units near the center of the core package is greater than the distribution density of protruding units near the edge of the core package.

[0011] Optionally, the thickness of the elastic portion decreases from the center region of the partition to the edge region.

[0012] Optionally, the area S1 of the central region and the area S2 of the partition satisfy the relationship: 0.4S2≤S1≤0.6S2.

[0013] Optionally, the battery structure also includes fasteners, which are arranged in pairs on two opposite inner walls of the housing, and each fastener has a guide groove along the height direction of the housing, into which the partition plate is inserted.

[0014] Optionally, an adjustment groove is provided inside the housing along the width direction of the housing, and the fixing member is slidably connected to the housing through the adjustment groove. The battery structure also includes a locking member, which is connected to the fixing member and the housing respectively.

[0015] Optionally, a liquid cooling cavity is provided inside the partition, and the liquid cooling cavity is filled with a cooling medium.

[0016] The beneficial effects of this utility model are as follows:

[0017] Compared to existing technologies where the expansion of the battery cell directly compresses the battery casing wall, potentially leading to plastic deformation, weld cracking, or even structural bursting, this application addresses the safety hazards by incorporating a separator structure between the cells. This transforms the stress generated during cell expansion from a point load concentrated on the casing wall into a surface contact form distributed within the separator, significantly reducing localized stress concentration. Simultaneously, the supporting contact between the separator and the cell pack forms an internal "force ring." Under expansion loads, the separator effectively limits and distributes the expansion behavior of the cell pack, confining deformation to a localized area within the separator and preventing its diffusion throughout the entire module cavity. This further enhances the casing's resistance to deformation and the overall structural stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is an overall schematic diagram of the battery structure provided in this embodiment of the utility model;

[0020] Figure 2This is a cross-sectional schematic diagram of the battery structure provided in an embodiment of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of another battery structure provided in this embodiment of the present invention;

[0022] Figure 4 This is a cross-sectional schematic diagram of another battery structure provided in this embodiment of the utility model;

[0023] Figure 5 This is a cross-sectional view of the battery structure provided in an embodiment of the present invention from another direction;

[0024] Figure 6 This is provided by the embodiment of the present utility model. Figure 5 A magnified view of a portion of region A in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the partition provided in an embodiment of the present utility model.

[0026] Explanation of icon numbers:

[0027] 10. Housing; 11. Receiving cavity; 12. Opening; 13. Adjustment groove; 20. Cover plate; 30. Partition plate; 31. Liquid cooling cavity; 40. Core package; 50. Elastic part; 51. Protruding unit; 60. Fixing member; 61. Guide groove; 70. Locking member. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0030] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0031] Please see Figure 1 andFigure 2 , Figure 1 This is an overall schematic diagram of the battery structure provided in an embodiment of the present invention. Figure 2 This is a cross-sectional schematic diagram of the battery structure provided in an embodiment of this utility model.

[0032] This utility model provides a battery structure that effectively improves the battery system's anti-expansion capability and structural stability by introducing a multi-layer separator 30 structure and a supporting contact relationship between the core pack 40 and the separator 30.

[0033] Structurally, the battery structure includes a housing 10, a cover plate 20, a separator 30, and multiple cell packs 40. The housing 10 is a structure with certain strength and sealing performance, and its interior forms a receiving cavity 11 for installing the cell assembly. An opening 12 communicating with the receiving cavity 11 is opened on the top or side of the housing 10 for subsequent cell assembly and cover plate 20 sealing operations. The cover plate 20 is disposed at the opening 12 of the housing 10 and is fastened to the housing 10 by screwing, welding, or other sealing connection methods, thereby forming a closed structural space to ensure the battery's sealing performance and structural integrity.

[0034] At least one partition 30 is provided inside the housing 10. The partition 30 is arranged along the internal height or width direction of the battery housing 10 and is fixedly connected to the bottom wall and side wall of the housing 10, thereby dividing the overall housing cavity 11 into multiple independent compartment spaces. These compartments can be arranged in a stacked, side-by-side, or mixed manner according to actual needs, and have good modularity and spatial adaptability. The core pack 40 (i.e., the cell assembly) is installed in each compartment and is in close contact with the surface of the adjacent partition 30 above, below, or to the left and right, forming a surface contact support structure.

[0035] During charge and discharge cycles, the battery cell is prone to irreversible expansion. If the wall of the housing 10 is directly squeezed, it is very easy to cause plastic deformation and stress concentration of the housing 10 under long-term action, and even lead to safety hazards such as weld cracking and housing 10 bursting.

[0036] In this embodiment, by introducing a separator 30 structure between the cells, the overall expansion pressure is transformed from a point-like effect into a surface contact distribution within the separator, effectively dispersing the stress concentration area and reducing the local load intensity. Simultaneously, the supporting contact between the core pack 40 and the separator 30 forms an "internal force ring" within the structure. During the application of the expansion load, the separator 30's limiting and load-sharing effect on the core pack 40 confines the expansion deformation to a localized area, preventing it from spreading to the entire battery cavity and further protecting the casing 10 from concentrated damage.

[0037] Furthermore, in some optimized embodiments, to balance the structural constraints and electrical connection requirements between the cells, the dimensions of the separator 30 in the height direction of the housing 10 are limited. The height of the separator 30 is set to be greater than the height of the core package 40 and less than the overall height of the housing 10. That is, in each layer, the separator 30 extends upward beyond the top of the core package 40, thereby forming a surrounding limiting structure for the core package 40 in the vertical direction, enhancing its stability and shock resistance during operation; at the same time, the separator 30 does not extend completely to the top wall of the housing 10 or the cover plate 20, so a certain height gap is maintained between the separator 30 and the housing 10.

[0038] The gap area can reserve wiring space for conductive connectors (such as busbars, connecting pieces, or copper busbars) between core packages 40, allowing core packages 40 in adjacent layers to achieve electrical series or parallel connection through the upper gap without penetrating the partition 30. Compared to directly drilling holes in the partition 30 for wiring, this solution effectively avoids the problem of weakened structural strength or reduced sealing performance caused by drilling holes in the partition 30, while improving the flexibility and safety of the assembly process.

[0039] Please see Figure 3 , Figure 3 This is a cross-sectional schematic diagram of another battery structure provided in an embodiment of this utility model. Figure 3 The Z direction shown is the height direction of the casing. In some other embodiments, to further improve the buffering and adhesion performance between the cell and the separator 30 during expansion, the battery structure also includes elastic portions 50 disposed on both sides of the separator 30. The elastic portions 50 are made of a material with compressibility and elastic recovery properties, covering one or both sides of the separator 30 facing the cell pack 40, so that the cell pack 40 no longer directly and rigidly contacts the separator 30, but achieves flexible adhesion through the elastic portions 50.

[0040] The elastic part 50 can be made of materials such as foamed rubber, elastic silicone pad, compressed cotton layer, thermoplastic elastomer, etc., and its thickness can be adjusted according to the estimated expansion of the core package 40. The elastic part 50 is laid along the surface of the partition 30 and can be integrally set with the partition 30 by means of bonding, snap-fit, or embedding groove, so as to achieve elastic buffer contact with the core package 40 without changing the original partition structure.

[0041] In this embodiment, the elastic portion 50 effectively absorbs the volume change and expansion stress generated when the core pack 40 expands. When the core pack 40 undergoes slight bulging during the charging and discharging process, the elastic portion 50 deforms under pressure, providing support for the core pack 40 while preventing it from directly applying hard contact pressure to the separator 30. This reduces the risk of stress concentration on the surface of the separator 30 and delays structural fatigue or material fracture. Simultaneously, the elastic portion 50 enhances the core pack 40's resistance to disturbances under dynamic conditions such as vibration and impact, preventing core pack 40 shaking, displacement, or internal connector fatigue caused by loose gaps, thereby improving the mechanical reliability and shock resistance of the entire battery pack. Furthermore, the presence of the elastic portion 50 can accommodate dimensional inconsistencies in the core pack 40 due to tolerance variations or manufacturing errors, improving the consistency and fit of the entire battery cell assembly.

[0042] In some optimized embodiments, the elastic part 50 is constructed as a plurality of independently arranged protruding units 51, each protruding unit 51 being arranged at intervals along the surface of the partition 30, together forming an elastic buffer array with discrete distribution characteristics.

[0043] The raised unit 51 can be columnar, strip-shaped, conical, or hemispherical, with its bottom fixed to the surface of the partition 30 and its top slightly higher than the reference plane of the partition 30 body. The raised units 51 are separated from each other, forming a regular or irregular spacing arrangement on the surface of the partition 30. Depending on the actual design requirements, the raised units 51 can be arranged in a matrix, row-column, or honeycomb layout. Their height is typically less than the reserved gap between the core package 40 and the partition 30 to ensure that excessive pre-stress is not generated in the core package 40 during initial assembly, while gradually participating in stress deformation during cell expansion.

[0044] In this embodiment, a discrete raised elastic structure is achieved by employing independent raised units 51. Compared to a continuous elastic layer structure that is fully bonded, there are gaps between the raised units 51. When the local core package 40 expands significantly, the surrounding raised units 51 can respond independently, effectively reducing the accumulation of concentrated stress in a single area and improving the adaptability of the overall buffer structure. Simultaneously, the gaps between the raised structures can absorb assembly errors caused by thickness tolerances or positional offsets of the core package 40 to a certain extent, providing greater assembly tolerance and avoiding poor bonding caused by rigid interference or excessive gaps. Furthermore, compared to a continuously covered thick elastic layer, the distributed raised structure achieves a buffering effect while using less material, helping to control the overall weight and manufacturing cost of the battery module.

[0045] During charge-discharge cycles, the expansion and deformation of a battery cell often do not occur uniformly. Due to factors such as electrode winding or stacking structure, electrolyte distribution, and internal temperature gradients, the central region of the core package 40 is more prone to gas accumulation or localized temperature rises during electrochemical reactions, resulting in a generally higher expansion rate in the center compared to the edge regions. To address this behavioral characteristic, in some embodiments, the elastic portion 50 is specifically optimized.

[0046] Specifically, the raised elastic units distributed on the surface of the partition 30 are not uniformly arranged, but are designed with differentiated distribution density according to the regional characteristics of the cell expansion behavior: the raised units 51 near the center of the core package 40 are arranged with a higher density than those near the edge of the core package 40, that is, more elastic raised structures are set per unit area.

[0047] In this embodiment, by configuring more elastic protrusions in the area where the core package 40 expands more violently at its center, the stress concentration at the center is effectively dispersed, preventing the central area of ​​the core package 40 from directly pressing against the separator 30 due to loss of buffer, thus avoiding local stress penetration or deformation of the shell 10. Simultaneously, by adjusting the response sensitivity of the local elastic structure, this embodiment enables the overall buffering system to exhibit more balanced and compliant adaptive characteristics in all areas, which helps to mitigate warping and twisting of the cell surface caused by uneven stress.

[0048] Additionally, please see Figure 4 , Figure 4 This is a cross-sectional schematic diagram of another battery structure provided by an embodiment of the present invention. In some other embodiments, the elastic part 50 adopts an integral continuous structure, that is, a whole piece of covering elastic layer is formed on the surface of the separator 30. The elastic part 50 is in close contact with the entire contact surface on one side of the separator 30, and the coverage area can match the corresponding separator area of ​​the core pack 40, ensuring that the core pack 40 always maintains stable contact with the elastic part 50 after installation.

[0049] To accommodate the expansion differences in different areas of the battery cell during operation, the thickness of the elastic part 50 varies gradually along the surface of the separator 30. Specifically, the thickness gradually decreases from the center of the separator 30 to the edge. In other words, the elastic part 50 has a larger thickness in the area corresponding to the middle of the battery cell at the center of the separator 30 to provide more buffer space and stronger deformation; while the thickness of the elastic part 50 is relatively thinner near the edge of the battery cell to avoid redundant accumulation and reduce assembly interference or force deviation at the edge of the battery cell.

[0050] In this embodiment, the gradient thickness structure not only better conforms to the actual expansion law of the battery cell in terms of structure, but also has better mechanical response capability. The thicker center and thinner edges ensure that the elastic part 50 maintains a good fit in the initial installation state of the core package 40. When the core package 40 expands, it can achieve gradual stress release from the center outward, effectively avoiding stress concentration and structural "burst". At the same time, since the expansion range of the edge area is small, the use of a thinner elastic layer can save space, reduce material usage, and improve the space utilization of the shell 10.

[0051] Furthermore, based on the overall continuous elastic part 50 structure with gradient thickness, in order to achieve a balance between buffering performance and structural space utilization, the elastic part 50 introduces regional differences in thickness arrangement. Specifically, the central region of the elastic part 50 is set as a region with constant thickness, and its thickness is maintained at a preset maximum value to correspond to the central position where the expansion of the core package 40 is most significant; while the transition region extending outward from the central region to the edge of the elastic part 50 presents a gradient structure with gradually decreasing thickness, forming an overall shape of "thick in the center and thin at the edge".

[0052] The central region refers to the continuous area within the elastic part 50 where the thickness remains within its maximum range, denoted as S1. The area covered by the entire partition 30 is denoted as S2, satisfying the following relationship: 0.4S2≤S1≤0.6S2. In actual operation, the expansion and deformation of the battery cell are mostly concentrated in its internal central region, occupying approximately 40% to 60% of its cross-section; while the edge region is relatively stable with less variation. Therefore, limiting the constant-thickness buffer zone (i.e., S1) to between 40% and 60% of the area of ​​the partition 30 can both cover the core expansion area and avoid problems such as edge redundancy, wasted space, or assembly interference caused by uneven thickness due to excessive area.

[0053] Please see Figure 5 and Figure 6 , Figure 5 This is a cross-sectional view of the battery structure provided in an embodiment of the present invention from another direction. Figure 6 This is provided by the embodiment of the present utility model. Figure 5 A partial enlarged view of region A. In some optimized embodiments, the battery structure further includes a fixing member 60 for achieving a detachable connection between the separator 30 and the housing 10. The fixing members 60 are arranged in pairs and are respectively installed on two opposite inner walls of the housing 10, with corresponding positions to clamp and position the separator 30.

[0054] Each fastener 60 has a guide groove 61 extending along the height of the housing 10. The width of the guide groove 61 matches the thickness of the partition 30, allowing the partition 30 to slide downwards into the corresponding guide groove 61 to complete the fitting connection with the housing 10. This structure allows the partition 30 to be quickly assembled without the aid of screws, welding, or adhesive, facilitating subsequent disassembly, replacement, or repositioning.

[0055] In this embodiment, the guide groove 61 of the fixing member 60 not only provides a stable support surface but also limits the lateral displacement of the partition 30, ensuring its stable positioning during core package 40 installation, module handling, or operational vibration, thus preventing the risk of displacement or detachment between the partition 30 and the core package 40. Simultaneously, the guide groove 61 structure can be preset with appropriate insertion depth and limiting stops to ensure that the partition 30 also has a certain stopping ability in the vertical direction after insertion, enhancing the overall structural stability.

[0056] Furthermore, in some optimized embodiments, the housing 10 has an adjustment groove 13 structure for adjusting the position of the fixing member 60 along its width direction inside the housing 10. The adjustment groove 13 is a strip-shaped groove extending laterally along the inner wall of the housing 10, and its opening direction is consistent with the lateral arrangement direction of the partition 30, that is, parallel to the arrangement direction of the multiple core packages 40.

[0057] The fixing member 60 forms a sliding fit structure with the adjustment groove 13. That is, the bottom of the fixing member 60 is provided with structural components such as a sliding guide rail, a tongue, or a mating flange, which can be embedded in the adjustment groove 13 and slide left and right along the groove, so that the fixing member 60 and the separator 30 it supports can move and adjust laterally inside the housing 10. With the help of this structure, the user can flexibly adjust the lateral position of the separator 30 during the assembly process according to different core pack 40 widths, spacing tolerances, or module layouts, significantly improving the assembly compatibility and structural adaptability of the battery module.

[0058] To ensure that the fixing member 60 can be firmly held after being adjusted to the target position, a locking member 70 is also provided in the battery structure. The locking member 70 can be in the form of screws, latches, pressure plates or hooks, and is connected to the fixing member 60 and the housing 10 respectively. When the locking member 70 is in the locked state, the position of the fixing member 60 relative to the adjustment groove 13 can be reliably locked, thereby completing the final installation and positioning of the fixing member 60.

[0059] In this embodiment, by providing an adjustment groove 13 inside the housing 10 and slidingly connecting the fixing member 60 to the adjustment groove 13, and then cooperating with the locking member 70 to achieve positioning and locking, this embodiment not only achieves the lateral adjustability of the position of the separator 30, but also ensures its structural stability and anti-disturbance capability after adjustment. It is particularly suitable for the flexible arrangement and efficient assembly requirements of multi-specification cells or modular battery systems.

[0060] Please see Figure 7 , Figure 7 This is a schematic diagram of the partition 30 provided in an embodiment of the present invention. In some embodiments, the problem of structural thermal expansion and deformation is alleviated by improving heat dissipation. A liquid cooling cavity 31 for liquid cooling is provided inside the partition 30. The liquid cooling cavity 31 is a hollow structure disposed inside the partition 30, extending longitudinally or laterally along the partition 30. Its shape can be a flat cavity, a serpentine flow channel, a mesh channel, or a combined cooling path structure to adapt to different module arrangements and heat exchange efficiency requirements.

[0061] The interior of the liquid cooling cavity 31 is filled with a cooling medium, such as a water-ethylene glycol mixture, fluorinated liquid, mineral oil, or other insulating coolant with high heat capacity and low corrosivity. In some embodiments, the liquid cooling cavity 31 is connected to the external cooling circuit of the battery pack through a pipe to form an active circulation system; in other embodiments, the liquid cooling cavity 31 is a closed structure, and the cooling medium is in a static closed state inside, achieving internal heat dissipation through thermal conduction and phase change heat transfer.

[0062] In this embodiment, the partition 30 not only serves as a mechanical structure for separating and supporting the battery cells, but also has a double-sided heat exchange function: that is, the partition 30 can simultaneously absorb the heat generated by the core packages 40 on both sides during operation, and conduct or disperse it in a timely manner through the cooling medium, effectively reducing the difference in battery cell operating temperature and thermal gradient inside the module. Under high-temperature conditions, the traditional solid partition 30 is prone to thermal expansion due to internal temperature rise, and stress concentration areas may cause structural warping, bolt loosening, or extrusion of the shell 10. However, the presence of the flowing or compressible cooling medium inside the liquid cooling cavity 31 can, to a certain extent, buffer the volume change and thermal stress accumulation caused by thermal expansion, reducing the risk of structural instability caused by thermal deformation.

[0063] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery structure, characterized in that, include: The housing has a receiving cavity and an opening communicating with the receiving cavity; A cover plate is connected to the housing and seals the opening; At least one partition is provided within the receiving cavity and connected to the bottom and side walls of the housing, the partition dividing the receiving cavity into multiple compartments; A core package is disposed in the partition layer, and the core package is in contact with the surface of the adjacent partition.

2. The battery structure according to claim 1, characterized in that, Along the height direction of the housing, the height of the partition is greater than the height of the core package, and the height of the partition is less than the height of the housing.

3. The battery structure according to claim 1, characterized in that, The battery structure also includes an elastic portion, which is elastic and covers both sides of the separator. The core pack contacts the separator through the elastic portion.

4. The battery structure according to claim 3, characterized in that, The elastic part includes multiple independent protruding units, which are spaced apart on the surface of the partition.

5. The battery structure according to claim 4, characterized in that, The distribution density of the protruding units near the center region of the core package is greater than the distribution density of the protruding units near the edge region of the core package.

6. The battery structure according to claim 3, characterized in that, The thickness of the elastic portion decreases from the center region of the partition to the edge region.

7. The battery structure according to claim 6, characterized in that, The area S1 of the central region and the area S2 of the partition satisfy the relationship: 0.4S2≤S1≤0.6S2.

8. The battery structure according to claim 1, characterized in that, The battery structure also includes fasteners, which are arranged in pairs on two opposite inner walls of the housing, and each fastener has a guide groove along the height direction of the housing, into which the partition plate is inserted.

9. The battery structure according to claim 8, characterized in that, An adjustment groove is provided inside the housing along the width direction of the housing. The fixing member is slidably connected to the housing through the adjustment groove. The battery structure also includes a locking member, which is connected to the fixing member and the housing respectively.

10. The battery structure according to claim 1, characterized in that, The partition has a liquid cooling cavity inside, which is filled with a cooling medium.

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