An energy storage battery device

Abstract

This utility model discloses an energy storage battery device, including multiple battery boxes and connecting brackets. The battery boxes are stacked together along their thickness direction. In the direction perpendicular to the thickness of the battery boxes, at least one side of each battery box is recessed inward to form a fixing groove. The connecting brackets connect adjacent battery boxes respectively, and the connection between the connecting brackets and the battery boxes is located within the fixing groove. Compared with the prior art, the fixing groove refers to a support structure formed by the inward recess of the side of the battery box. This recessed structure can provide installation space for connecting components, and at the same time, it utilizes the lateral support of the groove wall to distribute the load. After the connecting bracket is embedded in the corresponding fixing groove of the adjacent battery box, the contact surface between the connecting bracket and the groove wall can generate multi-directional constraints, avoiding excessive stress concentration in the surrounding area of ​​the connection, thereby preventing damage to the connection.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to an energy storage battery device. Background Technology

[0002] With the rapid development of the new energy industry, energy storage devices, as core equipment for energy storage and release, are directly related to the structural reliability of the system's operational safety. Currently, in residential or commercial energy storage systems, a multi-battery pack stacked layout is typically used to improve energy density, and the mechanical connection stability between the battery packs has become a key factor affecting the overall structural lifespan.

[0003] Currently, the most common battery pack connection method used in the industry relies on direct bolt fastening. Specifically, sheet metal parts are vertically fastened to the side plane of the battery pack shell using bolts, and the preload of the bolts is used to fix adjacent battery packs. Under long-term gravity, vibration, and temperature cyclic loads, the area around the bolt holes experiences localized stress concentration because the contact surface is concentrated at the point where the bolt head contacts the shell plane. This stress concentration can easily lead to plastic deformation of the shell material and even crack propagation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides an energy storage battery device that can improve the connection stability of the battery box and reduce the concentrated load at the connection point.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An energy storage battery device includes multiple battery boxes and a connecting bracket. The multiple battery boxes are stacked together along their thickness direction. In the direction perpendicular to the thickness of the battery boxes, at least one side of the battery box is recessed inward to form a fixing groove. The connecting bracket connects two adjacent battery boxes respectively, and the connection between the connecting bracket and the battery box is located in the fixing groove.

[0007] In one embodiment, the connecting bracket includes a fixing part and a connecting part. The fixing part is connected to both ends of the connecting part. The connecting part protrudes to one side relative to the fixing part to form a clearance cavity. The fixing part extends into the fixing groove and is connected to the battery box.

[0008] In one embodiment, the connecting bracket includes a bent portion, a first end of which is connected to the connecting portion, a second end of which is connected to the fixing portion, the extending direction of the bent portion and the extending direction of the connecting portion forming an angle, and the bent portion and the connecting portion forming the clearance cavity.

[0009] In one embodiment, the energy storage battery device includes a fixing member, a first fixing hole is provided at the bottom of the fixing groove, a second fixing hole is provided in the connecting bracket, the fixing member passes through the second fixing hole and the first fixing hole, and is connected to the battery box.

[0010] In one embodiment, the first fixing hole is elongated and extends along the thickness direction of the battery box or along a direction perpendicular to the thickness direction of the battery box.

[0011] In one embodiment, the wall of the fixing groove is rectangular or a continuous arc surface.

[0012] In one embodiment, the wall of the fixing groove extends outward at an angle along the groove depth direction.

[0013] In one embodiment, the wall of the fixing groove and the connecting bracket are spaced apart to form redundant space.

[0014] In one embodiment, the energy storage battery device includes a buffer member, which is installed in the fixing groove and presses against the fixing groove and the connecting bracket respectively.

[0015] In one embodiment, the fixing part and the connecting part are detachably connected.

[0016] In one embodiment, the energy storage battery device includes a support member connected to at least one side of the battery box, the support member being clamped between two adjacent battery boxes, or the support member being used to abut against the ground.

[0017] In one embodiment, the battery box includes a first side and a second side disposed opposite to each other. The first side is connected to the support member, and the second side has a positioning groove. When multiple battery boxes are arranged in sequence, the support member is inserted into the positioning groove of the adjacent battery box.

[0018] The beneficial effects of this utility model are as follows: This application provides an energy storage battery device, including multiple battery boxes and connecting brackets. The multiple battery boxes are stacked together along their thickness direction. In the direction perpendicular to the thickness of the battery boxes, at least one side of the battery box is recessed inward to form a fixing groove. The connecting brackets connect two adjacent battery boxes respectively, and the connection between the connecting brackets and the battery boxes is located in the fixing groove. Compared with the prior art, the fixing groove refers to a receiving structure formed by the inward recess of the side of the battery box. This recessed structure can provide installation space for the connecting components, and at the same time, the lateral support of the groove wall can distribute the load. After the connecting bracket is embedded in the corresponding fixing groove of the adjacent battery box, the contact surface between the connecting bracket and the groove wall can generate multi-directional constraints, avoiding excessive stress concentration in the surrounding area of ​​the connection, thereby preventing damage to the connection. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of an energy storage battery device according to the present invention is shown;

[0020] Figure 2 A schematic diagram of the structure of a connecting bracket according to this utility model is shown;

[0021] Figure 3 An exploded view of the components of a connecting bracket according to this utility model is shown;

[0022] Figure 4 This invention provides a schematic diagram illustrating the connection between a battery box and a connecting bracket.

[0023] Figure 5 A side view of a battery box according to the present invention is shown;

[0024] Figure 6 It shows Figure 1 Enlarged view of point A in the image;

[0025] Figure 7 Another structural schematic diagram of an energy storage battery device according to the present invention is shown;

[0026] Figure 8 It shows Figure 7 Enlarged view of point B in the image;

[0027] Figure 9 An exploded view of the components of an energy storage battery device according to this utility model is shown;

[0028] Figure 10 A top view schematic diagram of a battery box according to the present invention is shown;

[0029] Reference numerals: 1. Battery box; 11. Fixing slot; 111. First fixing hole; 112. Redundancy space; 12. First side; 13. Second side; 131. Positioning slot; 14. Third side; 15. Fourth side;

[0030] 2. Connecting bracket; 21. Fixing part; 22. Connecting part; 23. Bending part; 24. Clearance cavity; 211. Second fixing hole; 3. Buffer; 4. Fixing part; 5. Support. Detailed Implementation

[0031] In this utility model, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or constituent parts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] See Figure 1 This application provides an energy storage battery device, including multiple battery boxes 1 and connecting brackets 2. The multiple battery boxes 1 are stacked together along their thickness direction. In the direction perpendicular to the thickness of the battery box 1, at least one side of the battery box 1 is recessed inward to form a fixing groove 11. The connecting brackets 2 connect two adjacent battery boxes 1 respectively, and the connection between the connecting brackets 2 and the battery boxes 1 is located in the fixing groove 11.

[0035] To describe clearly, Figure 1 The Z-direction represents the thickness direction of battery box 1.

[0036] In practical applications, multiple battery boxes 1 are stacked together along the thickness direction. The side of the battery box 1 forming the fixing groove 11 is parallel to the thickness direction. This design ensures that the connecting sides of adjacent battery boxes 1 are closely adjacent, effectively shortening the length of the connecting bracket 2 and thus enhancing the structural rigidity of the connecting bracket 2. The fixing groove 11 refers to the receiving structure formed by the inward indentation of the side of the battery box 1. This recessed structure provides installation space for the connecting parts 22, while utilizing the lateral support of the groove wall to share the load. After the connecting bracket 2 is embedded into the corresponding fixing groove 11 of the adjacent battery box 1, the two ends of the bracket can be fixed to the bottom of the groove of the two battery boxes 1 respectively by bolts.

[0037] At this point, the preload generated by the bolt tightening is borne jointly by the sidewall and bottom of the fixing groove 11, and the contact area expands from the annular area of ​​traditional planar contact to a combined area of ​​the bottom plane and the sidewall. Under the conditions of the battery box 1's own weight, external vibration, or temperature changes, the contact surface between the connecting bracket 2 and the groove wall can generate multi-directional constraints, avoiding excessive stress concentration around the bolt holes. This structure allows mechanical loads to be transferred through the groove wall to the three-dimensional support structure of the battery box 1's outer shell, rather than relying solely on the point contact of the bolt heads.

[0038] See Figure 2 The connecting bracket 2 includes a fixing part 21 and a connecting part 22. The fixing part 21 is connected to both ends of the connecting part 22. The connecting part 22 protrudes to one side relative to the fixing part 21 to form a relief cavity 24. The fixing part 21 extends into the fixing groove 11 and is connected to the battery box 1.

[0039] In practical applications, the two opposite ends of the connecting part 22 are respectively connected to the fixing part 21. The fixing part 21 is embedded in the fixing groove 11 and then connected to the groove wall of the fixing groove 11. The connecting part 22 protrudes to one side of the fixing part 21, so that the connecting part 22 forms a protruding structure between the two fixing parts 21. Its protruding part does not contact the side wall of the battery box 1, forming a continuous support interface. The clearance cavity 24 refers to the cavity area protruding outward from the connecting part 22, which keeps the connecting part 22 and the side wall of the battery box 1 at a distance. The existence of the clearance cavity 24 ensures that the connecting bracket 2 will not exert a squeezing effect on the side wall of the battery box 1 when the size fluctuates due to temperature changes.

[0040] See again Figure 2 The connecting bracket 2 includes a bending portion 23, the first end of the bending portion 23 is connected to the connecting portion 22, the second end of the bending portion 23 is connected to the fixing portion 21, the extending direction of the bending portion 23 and the extending direction of the connecting portion 22 form an angle, and the bending portion 23 and the connecting portion 22 surround to form a relief cavity 24.

[0041] In practical applications, the two ends of the bent portion 23 are connected to the connecting portion 22 and the fixing portion 21, respectively. The extension direction of the bent portion 23 is different from that of the connecting portion 22. This allows a specific relief cavity 24 structure to be constructed by adjusting the angle between the extension directions of the bent portion 23 and the connecting portion 22. The presence of the bent portion 23 changes the force transmission path of the traditional straight connector, enabling the connecting bracket 2 to absorb some stress through the geometric deformation of the bent portion 23 when bearing load, thus avoiding excessive stress concentration at the fixing groove 11. The angled structure formed by the bent portion 23 and the connecting portion 22 ensures the overall rigidity of the connecting bracket 2 and provides deformation space for the relative displacement between the connecting bracket 2 and the battery box 1 through the formed relief cavity 24. This combined design allows the connecting bracket 2 to maintain its fixing function while mitigating gravity loads or external load impacts through its own structural deformation, reducing the local stress peak in the area surrounding the fixing groove 11.

[0042] More specifically, a first chamfer can be formed at the connection between the bending part 23 and the connecting part 22, and a second chamfer can be formed at the connection between the bending part 23 and the fixing part 21. The chamfer design not only optimizes the stress distribution, but also reduces the stress concentration at the connection, thereby improving the durability of the overall structure.

[0043] See Figure 3 The fixing part 21 and the connecting part 22 are detachably connected. In practical applications, the fixing part 21 and the connecting part 22 can be integrally molded or designed separately. During assembly, the fixing part 21 and the connecting part 22 are pre-assembled into a connecting bracket 2 via a detachable connection. Then, the fixing part 21 is embedded into the fixing groove 11 of the battery box 1 and locked by the fastener 4. Since the fixing part 21 and the connecting part 22 are separable, their relative angles can be adjusted separately during installation, avoiding forced deformation between the connecting bracket 2 and the fixing groove 11 due to assembly errors, thereby reducing local stress concentration. In maintenance scenarios, if the connecting part 22 suffers fatigue damage due to long-term stress, only the connecting part 22 needs to be disassembled and replaced, without removing the fixing part 21 or replacing the entire connecting bracket 2, thus reducing repeated disassembly and assembly damage to the fixing groove 11 structure of the battery box 1. In addition, when it is necessary to expand the number of battery boxes 1, rapid modular reconstruction can be achieved by adding or removing connecting brackets 2, without replacing the entire bracket structure.

[0044] It is understandable that the fixing part 21 and the connecting part 22 can adopt various methods such as plug-in, snap-fit, and threaded connection to ensure a stable connection and easy disassembly.

[0045] See Figure 4 The energy storage battery device includes a fixing member 4. The bottom of the fixing groove 11 is provided with a first fixing hole 111, and the connecting bracket 2 is provided with a second fixing hole 211. The fixing member 4 passes through the second fixing hole 211 and the first fixing hole 111 and is connected to the battery box 1.

[0046] In practical applications, the connection between the connecting bracket 2 and the battery box 1 is usually detachable, which facilitates the installation, disassembly, and replacement of the battery box 1. This application provides a fixing member 4, which can be a bolt or screw. The fixing member 4 passes through the second fixing hole 211 and the first fixing hole 111 in sequence and is threadedly connected to the battery box 1, forming a constraint force perpendicular to the stacking direction of the battery box 1. Under the pre-tightening force of the fixing member 4, the contact surface between the connecting bracket 2 and the battery box 1 forms a surface contact bearing area. The surface contact bearing design distributes the load to a larger contact area, reducing the bearing strength per unit area.

[0047] See Figure 5 The first fixing hole 111 is elongated and extends along the thickness direction of the battery box 1 or along the thickness direction perpendicular to the battery box 1.

[0048] In practical applications, the first fixing hole 111 can be set as an elongated shape. An elongated fixing hole refers to a hole structure with a major axis and a minor axis, such as an ellipse or a rectangle. The elongated fixing hole provides displacement compensation space for the fixing member 4. When the battery box 1 is subjected to vibration or temperature change, the fixing member 4 can generate a micro displacement in the direction of the long axis of the hole, avoiding the concentration of local stress in a single position.

[0049] The first fixing hole 111, extending along the thickness direction, allows the fastener 4 to be positioned in the stacking direction to accommodate battery boxes 1 of different sizes; the hole perpendicular to the thickness direction absorbs assembly errors or lateral expansion deformation through lateral displacement. By matching different load types, the two extension directions disperse the concentrated stress that originally acted on the edge of the circular hole to both sides of the long axis of the hole, reducing fatigue damage to the material caused by cyclic loading.

[0050] It should be noted that the first fixing hole 111 can also be circular, and the second fixing hole 211 can also be circular. Circular fixing holes are convenient for manufacturing countersunk holes, which can sink the head of the fastener 4 into the hole, reduce the protruding part, reduce the risk of interference, and improve the flatness of the appearance.

[0051] See again Figure 5 The wall of the fixing groove 11 is rectangular or a continuous arc surface. In practical applications, the groove wall can adopt a rectangular structure, which is simple to manufacture and reduces the difficulty of production and processing. The groove wall can also adopt a continuous arc surface, which can reduce the stress concentration effect, thereby improving the fatigue resistance of the battery box 1 connection structure.

[0052] See again Figure 5Along the depth direction of the fixed groove 11, the groove wall of the fixed groove 11 extends outward at an angle. In practical applications, the groove wall of the fixed groove 11 is designed to extend outward at an angle along the groove depth direction, so that a gradually changing contact surface is formed between the connecting bracket 2 and the groove wall.

[0053] The inclined groove wall design changes the rigid contact method of traditional vertical groove walls. During the insertion of the connecting bracket 2 into the fixing groove 11, the inclined surface guides the connecting bracket 2 to gradually fit together, reducing the instantaneous impact force during assembly. When the connecting bracket 2 is subjected to external loads, the inclined groove wall can decompose concentrated stress into components along the groove wall's extension direction, achieving load dispersion and transfer by increasing the contact area. This structure effectively alleviates stress concentration caused by point forces in the groove bottom area, preventing plastic deformation at the connection point under long-term gravity or temperature changes. Furthermore, the inclined groove wall also acts as a guide, facilitating better insertion of the connecting bracket 2 into the fixing groove 11.

[0054] See Figure 6 The walls of the fixed groove 11 and the connecting bracket 2 are spaced apart to form a redundant space 112. The redundant space 112 allows the connecting bracket 2 a certain degree of freedom when subjected to thermal expansion or vibration, reducing stress concentration caused by rigid constraints. The small gap between the groove wall and the bracket can also accommodate minor errors during assembly, ensuring the stability and reliability of the connection structure. The combination of the inclined groove wall and the redundant space 112 further enhances the durability and adaptability of the battery box 1 connection system.

[0055] See Figure 7 and Figure 8 The energy storage battery device also includes a buffer 3, which is installed in the fixing groove 11 and presses against the fixing groove 11 and the connecting bracket 2 respectively.

[0056] In practical applications, the buffer 3 is installed between the contact interface of the connecting bracket 2 and the fixing groove 11. This can be between the groove wall of the fixing groove 11 and the connecting bracket 2, or between the bottom of the fixing groove 11 and the connecting bracket 2. The installation position of the buffer 3 within the fixing groove 11 directly corresponds to the contact interface between the connecting bracket 2 and the battery box 1. Through the deformation of the elastic material, it absorbs vibration energy, transforming the point stress distribution originally concentrated around the bolt holes into a planar load distribution on the contact surface of the buffer 3. The design of the buffer 3 pressing against both the fixing groove 11 and the connecting bracket 2 ensures that the force applied by the connecting bracket 2 is dispersed through the buffer 3 to the entire groove wall area of ​​the fixing groove 11, reducing the peak stress per unit area. This buffer 3 can also compensate for the differences in thermal expansion of different materials due to temperature changes, preventing extrusion deformation caused by rigid connections.

[0057] It should be noted that buffer 3 refers to an isolation element with elastic deformation capability, which can be implemented using rubber pads or silicone pads.

[0058] See Figure 9 The energy storage battery device includes a support member 5, which is connected to at least one side of the battery box 1. The support member 5 is clamped between two adjacent battery boxes 1, or the support member 5 is used to abut against the ground.

[0059] In practical applications, when battery boxes 1 are arranged sequentially along their thickness direction, there are two ways to place multiple battery boxes 1. One way is to stack them together vertically along the thickness direction. When stacked, the support member 5 is clamped between adjacent battery boxes 1. At this time, the support member 5 can be used to support the weight of the battery box 1 above it, preventing the weight of the battery box 1 from being directly transmitted to the connecting bracket 2, thereby reducing the load pressure on the connecting bracket 2 and improving the stability of the overall structure.

[0060] Another placement method is to arrange them horizontally along the thickness direction, such as... Figure 7 As shown, the support member 5 is used to contact the ground. Specifically, the battery box 1 is placed vertically on the ground, and the support member 5 is in contact with the ground. At this time, the support member 5 bears the entire weight of the battery box 1, and the connecting bracket 2 only plays a fixing role and will not be affected by the weight of the battery box 1. This improves the service life and fatigue resistance of the connecting bracket 2, and further enhances the overall safety and reliability of the energy storage battery device.

[0061] See Figure 9 and Figure 10 The battery box 1 includes a first side 12 and a second side 13 arranged opposite to each other. The first side 12 is connected to the support member 5. The second side 13 has a positioning groove 131. When multiple battery boxes 1 are arranged in sequence, the support member 5 is inserted into the positioning groove 131 of the adjacent battery box 1.

[0062] In practical applications, both the first side 12 and the second side 13 are perpendicular to the thickness direction. When multiple battery boxes 1 are arranged together, the first side 12 of the battery box 1 and the second side 13 of the adjacent battery box 1 are set facing each other. Therefore, the support member 5 is connected to the first side 12, and the second side 13 is provided with a positioning groove 131. When placing, the positioning effect of the support member 5 and the positioning groove 131 can be used to achieve precise alignment of the adjacent battery boxes 1, ensuring the compactness and stability of the overall structure, without the need for frequent position adjustments, thus saving time and manpower.

[0063] It should be noted that the support component 5 can be made of plastic to avoid scratching the surface of the battery box 1.

[0064] See again Figure 9The battery box 1 also includes a third side 14 and a fourth side 15. The first side 12, the second side 13, and the third side 14 are adjacent to each other. The third side 14 is the area where the weight of the battery box 1 is concentrated. The third side 14 can be connected to the support member 5. When the battery box 1 is placed vertically on the ground, the third side 14 faces the ground, and the support member 5 contacts the third side 14 to bear the main weight and ensure the stability of the battery box 1. In addition, the fourth side 15 is designed to have a fixing groove 11. The fourth side 15 is the side away from the internal components of the battery box 1. The fixing groove 11 on this side can reduce the impact of the groove on the internal structure of the battery box 1 and reduce potential safety hazards.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0067] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An energy storage battery device, characterized in that, include: Multiple battery boxes are stacked together along their thickness direction, and at least one side of the battery box is recessed inward to form a fixing groove in the direction perpendicular to the thickness of the battery box. A connecting bracket is provided to connect two adjacent battery boxes respectively, and the connection between the connecting bracket and the battery box is located in the fixing groove.

2. The energy storage battery device according to claim 1, characterized in that, The connecting bracket includes a fixing part and a connecting part. The fixing part is connected to both ends of the connecting part. The connecting part protrudes to one side relative to the fixing part to form a clearance cavity. The fixing part extends into the fixing groove and is connected to the battery box.

3. The energy storage battery device according to claim 2, characterized in that, The connecting bracket includes a bent portion, a first end of which is connected to the connecting portion, and a second end of which is connected to the fixing portion. The extending direction of the bent portion and the extending direction of the connecting portion form an angle, and the bent portion and the connecting portion enclose the clearance cavity.

4. The energy storage battery device according to claim 1, characterized in that, The energy storage battery device includes a fixing member, a first fixing hole is provided at the bottom of the fixing groove, a second fixing hole is provided in the connecting bracket, the fixing member passes through the second fixing hole and the first fixing hole, and is connected to the battery box.

5. The energy storage battery device according to claim 4, characterized in that, The first fixing hole is elongated and extends along the thickness direction of the battery box or along a direction perpendicular to the thickness direction of the battery box.

6. The energy storage battery device according to any one of claims 1 to 5, characterized in that, The wall of the fixing groove is rectangular or a continuous arc surface.

7. The energy storage battery device according to any one of claims 1 to 5, characterized in that, Along the depth direction of the fixed groove, the groove wall extends outward at an angle.

8. The energy storage battery device according to any one of claims 1 to 5, characterized in that, The walls of the fixing groove and the connecting bracket are spaced apart to form redundant space.

9. The energy storage battery device according to any one of claims 1 to 5, characterized in that, The energy storage battery device includes a buffer component, which is installed in the fixing groove and presses against the fixing groove and the connecting bracket respectively.

10. The energy storage battery device according to claim 2, characterized in that, The fixing part and the connecting part are detachably connected.

11. The energy storage battery device according to any one of claims 1 to 5, characterized in that, The energy storage battery device includes a support member connected to at least one side of the battery box. The support member is clamped between two adjacent battery boxes, or the support member is used to abut against the ground.

12. The energy storage battery device according to claim 11, characterized in that, The battery box includes a first side and a second side arranged opposite to each other. The first side is connected to the support member, and the second side has a positioning groove. When multiple battery boxes are arranged in sequence, the support member is inserted into the positioning groove of the adjacent battery box.

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