Battery module and energy storage device

Abstract

The utility model belongs to battery technical field discloses a kind of battery module and energy storage device, the battery module includes shell, driving part and multiple electric core, shell includes main frame, multiple partition plates are equipped in main frame, multiple partition plates divide the inner cavity of main frame into multiple installation cavities, main frame is further equipped with the first opening being communicated with installation cavity, each electric core can be inserted into one installation cavity from the first opening;Driving part is connected to main frame, and driving part can drive any one electric core to move in corresponding installation cavity and extend the first opening. The battery module can realize the free replacement of single electric core, and the electric core is not damaged when replacing, and the disassembly and replacement are convenient and simple, which is beneficial to prolong the service life of overall structure.

Description

Technical Field

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

[0002] Lithium-ion battery packs have advantages such as high energy density, long lifespan, and low pollution. They also have a very low self-discharge rate, are lightweight, and easy to use, making them widely used in new energy fields such as electric logistics vehicles, buses, and cars.

[0003] Currently, most battery manufacturers use screw-locking assembly structures or BSB cell welding processes. While this assembly method is simple to operate, disassembling the cells after assembly is difficult and poses safety hazards. It requires professional technicians to disassemble the cells, and the cell terminals are damaged after disassembly, which affects secondary welding, hinders the reuse of the cells, and does not extend the service life of the remaining cells in the assembly.

[0004] Therefore, there is an urgent need for a battery module and energy storage device to solve the above problems. Utility Model Content

[0005] According to one aspect of the present invention, a battery module is provided that allows for the free replacement of individual battery cells without damaging the cells during replacement. Disassembly and replacement are convenient and simple, which helps to extend the service life of the overall structure.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Battery module, including:

[0008] Multiple battery cells;

[0009] The housing includes a main frame, which has multiple partitions that divide the interior of the main frame into multiple mounting cavities. The main frame also has a first opening that communicates with the mounting cavities, and each battery cell can be inserted into a mounting cavity through the first opening.

[0010] A driving component is connected to the main frame and is capable of driving any one of the battery cells to move within the corresponding mounting cavity and extend out of the first opening.

[0011] Optionally, the radial cross-section of the mounting cavity is adapted to the radial cross-section of the battery cell; and / or,

[0012] All apex corners on the radial cross-section of the mounting cavity are rounded.

[0013] Optionally, there are two first openings, which are opened opposite each other at both ends of the main frame in a first direction. The housing also includes a cover plate and a back plate, which are respectively connected to both ends of the main frame and respectively block one of the first openings.

[0014] Optionally, the housing further includes a plurality of elastic elements, each corresponding to one of the battery cells. The elastic elements are sandwiched between the back plate and the battery cells, and the elastic elements are capable of being compressed or extended along a first direction.

[0015] Optionally, a guide post is provided on the back plate opposite to each of the battery cells, and the elastic element is sleeved on the guide post. One end of the elastic element abuts against the corresponding battery cell, and the other end of the elastic element abuts against the back plate.

[0016] Optionally, a connecting portion is provided at one end of the main frame near the cover plate, and the connecting portion extends near the cover plate along the first direction, with the cover plate connected to the connecting portion.

[0017] Optionally, one of the cover plate and the connecting part is provided with a latching protrusion, and the other is provided with a latching slot, wherein the latching protrusion can be engaged with the latching slot.

[0018] Optionally, the connecting part is provided with a rotating connecting groove, and multiple driving components are provided, with each driving component corresponding to one of the multiple battery cells. Each driving component includes a rotating shaft, a connecting plate, and a pushing block. The connecting plate is connected between the rotating shaft and the pushing block. The rotating shaft is rotatably disposed in the rotating connecting groove, and the rotating shaft can drive the pushing block to push or pull the corresponding battery cell.

[0019] Optionally, the cross-section of the rotating connecting groove is C-shaped, the arc end of the rotating connecting groove is connected to the connecting part, the opening end of the rotating connecting groove faces the cover plate, the rotating shaft is inserted into the rotating connecting groove from the opening end of the rotating connecting groove, and the connecting plate is provided with a clearance opening for avoiding the groove wall of the rotating connecting groove.

[0020] According to another aspect of the present invention, an energy storage device is provided, comprising a housing and a battery module as described in any of the preceding claims, the housing comprising a frame having two second openings opposite each other along a second direction, at least one of the battery modules being capable of being inserted into the frame along the second direction, the second direction being perpendicular to the first direction.

[0021] Optionally, one of the box frame and the housing is provided with a sliding groove along the second direction, and the other is provided with a sliding rail, the sliding rail being slidably engaged with the sliding groove.

[0022] Optionally, the housing further includes a front panel and a rear baffle, the front panel and the rear baffle being connected to both sides of the housing frame respectively, and respectively sealing the two second openings.

[0023] The beneficial effects of this utility model are:

[0024] The battery module provided by this utility model includes a housing, a driving component, and multiple battery cells. The housing includes a main frame with multiple partitions dividing its interior into multiple mounting cavities. The main frame also has a first opening communicating with each mounting cavity, allowing each battery cell to be inserted into a mounting cavity through the first opening. In other words, the multiple mounting cavities within the main frame form multiple battery cell mounting spaces for housing, supporting, and protecting the cells. The driving component is connected to the main frame and can drive any battery cell to move within its corresponding mounting cavity and extend beyond the first opening. When replacing a battery cell, the driving component moves the cell, allowing it to be detached from the mounting cavity and freely replaced. Because each cell is isolated from the others, replacing a single cell will not damage other cells, making disassembly and replacement convenient and simple, thus extending the overall structure and lifespan of the battery module. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a first structural schematic diagram of the battery module provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the second structure of the battery module provided in this embodiment of the present invention;

[0028] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 This is a partial exploded view of the battery module provided in this embodiment of the utility model;

[0030] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0031] Figure 6 This is a partial structural schematic diagram of the battery module provided in this embodiment of the utility model;

[0032] Figure 7 This is an exploded view of the battery module provided in an embodiment of this utility model;

[0033] Figure 8 This is a cross-sectional view of the battery module provided in this embodiment of the utility model;

[0034] Figure 9 yes Figure 8 A magnified view of a section at point C;

[0035] Figure 10 This is an exploded view of the energy storage device provided in this embodiment of the utility model;

[0036] Figure 11 This is a partial structural schematic diagram of the energy storage device provided in this embodiment of the utility model.

[0037] In the picture:

[0038] 1. Battery cell;

[0039] 2. Shell; 21. Main frame; 211. Mounting cavity; 212. Slide rail; 22. Cover plate; 221. Bayonet; 222. Clearance groove; 23. Back plate; 231. Guide post; 24. Elastic element; 25. Partition; 26. Connecting part; 261. Locking protrusion; 262. Rotating connecting groove; 27. Support part;

[0040] 3. Driving component; 31. Rotating shaft; 32. Connecting plate; 321. Clearance opening; 33. Push block;

[0041] 4. Battery cell connector;

[0042] 100. Battery module;

[0043] 200. Housing; 201. Housing frame; 2011. Slide groove; 202. Front panel; 203. Rear baffle; 2031. Limiting protrusion;

[0044] 300. Module connection bar. Detailed Implementation

[0045] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0054] This embodiment provides a battery module, such as Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the battery module 100 includes a housing 2, a drive unit 3, and multiple battery cells 1.

[0055] The housing 2 includes a main frame 21, a cover plate 22, and a back plate 23. The main frame 21 has two first openings opposite each other along a first direction. Multiple partitions 25 are provided inside the main frame 21, dividing the interior of the main frame 21 into multiple mounting cavities 211. Each mounting cavity 211 has two ends connected to the two first openings, and each battery cell 1 can be inserted into a mounting cavity 211 along the first direction. The cover plate 22 and the back plate 23 are respectively connected to both ends of the main frame 21 and respectively block one of the first openings. A driving member 3 is connected to the side of the main frame 21 opposite to the back plate 23, and the driving member 3 can push the battery cell 1 to move along the first direction.

[0056] The battery cell in this embodiment can be a square cell or other cells with similar structures. Next, we will take a high energy density cell (LF230) as an example to further explain the battery module 100 in this embodiment.

[0057] In other words, this embodiment forms multiple battery cell 1 mounting spaces through multiple mounting cavities 211 within the main frame 21 to support and protect the battery cells 1. The main frame 21, cover plate 22, and back plate 23 form a closed housing 2 to ensure the structural strength of the battery module 100. When replacing a battery cell 1, the driving component 3 can push the battery cell 1 to move along a first direction, thereby causing the battery cell 1 to detach from the mounting cavity 211, thus enabling the free replacement of a single battery cell 1. Since each battery cell 1 in this embodiment is isolated from each other, replacing a single battery cell 1 will not damage other battery cells 1 within the battery module 100. Disassembly and replacement are convenient and simple, which helps to extend the service life of the overall structure of the battery module 100.

[0058] In this embodiment, as Figure 1 and Figure 6 As shown, the housing 2 has a cuboid structure, with the first direction parallel to the width direction of the housing 2. The partition 25 inside the housing 2 divides the inner cavity of the housing 2 into multiple independent mounting cavities 211. The extension direction of each mounting cavity 211 is parallel to the first direction. Multiple battery cells 1 correspond one-to-one with multiple mounting cavities 211 and are installed in the mounting cavities 211 to achieve independent management of individual battery cells 1.

[0059] For example, in this embodiment, the main frame 21, cover plate 22, back plate 23, and partition plate 25 in the housing 2 are all made of insulating materials such as plastic. This battery module 100 does not use sheet metal structures such as steel strips and end plates, making assembly simpler and helping to reduce the weight of the product.

[0060] Furthermore, the radial cross-section of the mounting cavity 211 is adapted to the radial cross-section of the battery cell 1. This arrangement ensures that adjacent battery cells 1 are isolated only by the partition 25, effectively improving the space utilization within the housing 2.

[0061] Furthermore, all apex corners on the radial section of the mounting cavity 211 are rounded. By setting rounded corners, the battery cell 1 can be quickly installed when inserted into the mounting cavity 211, and the apex corners of the battery cell 1 can be prevented from colliding with the inner wall of the mounting cavity 211, thus preventing damage to the battery cell 1.

[0062] Optionally, such as Figure 4 As shown, the battery module 100 also includes multiple cell connection bars 4. These multiple cell connection bars 4 are used to connect the cells 1 in series or in parallel within the battery module 100. The specific connection method can be designed according to actual needs and is not limited here. In this embodiment, the cell connection bar 4 can be an aluminum bar. The cell connection bar 4 is located at the first opening on the side of the housing 2 near the cover plate 22.

[0063] Alternatively, such as Figure 7 As shown, the housing 2 also includes multiple elastic elements 24, each corresponding to a single battery cell 1. The elastic elements 24 are sandwiched between the back plate 23 and the battery cell 1, and can compress or extend along a first direction. By providing a retractable elastic element 24 between the back plate 23 and the battery cell 1, installation tolerances caused by varying battery cell heights can be effectively avoided. The elastic element 24 can press the battery cell 1 against the battery cell connector 4, ensuring reliable contact between the battery cell 1 and the battery cell connector 4, thereby achieving continuous current flow to the battery cell 1 and ensuring the overall current flow capacity of the battery module 100.

[0064] Specifically, in this embodiment, a guide post 231 is provided on the back plate 23 opposite to each battery cell 1. An elastic member 24 is sleeved on the guide post 231, with one end of the elastic member 24 abutting against the corresponding battery cell 1 and the other end of the elastic member 24 abutting against the back plate 23. The guide post 231 can limit and guide the compression deformation of the elastic member 24 when it is compressed, preventing the elastic member 24 from being compressed and detached from the back plate 23.

[0065] For example, the elastic element 24 may be a spring in the prior art.

[0066] Continue to refer to Figures 2-5 A connecting portion 26 is provided at one end of the main frame 21 near the cover plate 22, and the connecting portion 26 extends away from the main frame 21 along a first direction. The connecting portion 26 is located on both sides of the first opening, and the cover plate 22 is connected to the connecting portion 26. The connecting portion 26 is used to increase the connection area between the cover plate 22 and the main frame 21, ensuring the reliability and stability of the connection.

[0067] Specifically, one of the cover plate 22 and the connecting part 26 is provided with a latching protrusion 261, and the other is provided with a latching slot 221. The latching protrusion 261 can be engaged with the latching slot 221. The cover plate 22 and the main frame 21 are assembled by a snap-fit ​​method, without the need for screw fixation, which helps to avoid the risk of fatigue failure.

[0068] In this embodiment, multiple latching protrusions 261 are spaced apart along the length of the connecting portion 26, and multiple latching slots 221 are correspondingly provided on the cover plate 22. When the cover plate 22 is fastened to the first opening at one end of the main frame 21, the multiple latching protrusions 261 simultaneously engage with the corresponding multiple latching slots 221, thereby realizing a detachable connection between the cover plate 22 and the main frame 21.

[0069] To be more specific, refer to Figure 4 and Figure 5 The main frame 21 is also provided with a support part 27 near the end of the cover plate 22. The support part 27 is connected between two connecting parts 26. The support part 27 is arranged perpendicularly to the connecting parts 26 to improve the structural stability after the connecting parts 26 are connected to the cover plate 22.

[0070] Furthermore, such as Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, a rotating connecting groove 262 is provided on the connecting part 26 opposite to each battery cell 1. Multiple driving components 3 are provided, each corresponding to one battery cell 1. Each driving component 3 includes a rotating shaft 31, a connecting plate 32, and a pushing block 33. The connecting plate 32 connects the rotating shaft 31 and the pushing block 33. The rotating shaft 31 is rotatably disposed in the rotating connecting groove 262, and the connecting plate 32 has a clearance opening 321 for avoiding the groove wall of the rotating connecting groove 262. When a battery cell 1 in the battery module 100 malfunctions, the back plate 23 of the battery module 100 can be disassembled, and the malfunctioning battery cell 1 can be removed using the elastic force of the elastic member 24. If it is not completely removed, the connecting plate 32 of the driving component 3 can be rotated to move the pushing block 33 along a first direction, thereby pushing the battery cell 1 out of the mounting cavity 211, thus facilitating the removal of the malfunctioning battery cell 1.

[0071] Specifically, the connecting plate 32 and the pushing block 33 are arranged at an angle. In this embodiment, the connecting plate 32 and the pushing block 33 are arranged perpendicularly. Along the direction close to the connecting plate 32, the thickness of the pushing block 33 gradually increases, thereby improving the connection strength and reliability between the connecting plate 32 and the pushing block 33.

[0072] To be more specific, refer to Figure 3 and Figure 5 The cover plate 22 has an avoidance groove 222. In this embodiment, the rotating connection groove 262 is C-shaped. The arc end of the rotating connection groove 262 is connected to the connection part 26. The opening end of the rotating connection groove 262 faces the cover plate 22. The avoidance groove 222 is used to avoid the groove wall of the rotating connection groove 262 and the rotating shaft 31 of the driving member 3.

[0073] This embodiment also provides an energy storage device, such as Figure 10 and Figure 11 As shown, the energy storage device includes a housing 200 and a battery module 100 provided in this embodiment.

[0074] Specifically, the housing 200 includes a frame 201 with two second openings opposite each other along a second direction. At least one battery module 100 can be inserted into the frame 201 along the second direction, which is perpendicular to the first direction. In this embodiment, the second direction is parallel to the length direction of the housing 2 of the battery module 100. Two battery modules 100 provided in this embodiment are sequentially arranged along the first direction in this energy storage device. The number of battery modules 100 in the energy storage device can be set according to requirements and is not limited here.

[0075] More specifically, one of the frame 201 and the housing 2 has a groove 2011 formed along the second direction, and the other has a slide rail 212, which slides in conjunction with the groove 2011. Through the sliding contact between the groove 2011 and the slide rail 212, the battery module 100 can be quickly installed. In this embodiment, the inner wall of the frame 201 has a groove 2011, and the housing 2 has a slide rail 212.

[0076] More specifically, the longitudinal cross-sectional shape of the slide groove 2011 matches that of the slide rail 212. The longitudinal cross-section of the slide groove 2011 can be trapezoidal, triangular, or square, etc., without limitation here.

[0077] For example, the box frame 201 can be processed by aluminum extrusion, which has a high material utilization rate. The aluminum extrusion process eliminates the need for welding and bending, making the processing simple and quick.

[0078] Optionally, continue to refer to Figure 10 The enclosure 200 also includes a front panel 202 and a rear baffle 203. The front panel 202 and the rear baffle 203 are respectively connected to both sides of the frame 201 and respectively seal the two second openings. The frame 201, the front panel 202 and the rear baffle 203 form a closed enclosure 200 to ensure the structural strength of the energy storage device.

[0079] Furthermore, the energy storage device also includes a module connection bar 300. The module connection bar 300 is used to realize the series or parallel connection of the battery modules 100 within the energy storage device. The specific connection method can be designed according to actual needs and is not limited here. The module connection bar 300 can be made of aluminum, which has good conductivity.

[0080] Furthermore, a limiting protrusion 2031 is provided on the side of the rear baffle 203 facing the battery module 100. The limiting protrusion 2031 can press the battery module 100 against the module connection row 300, ensuring reliable contact between the battery module 100 and the module connection row 300, thereby ensuring the stable output of the energy storage device.

[0081] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery module, characterized in that, include: Multiple battery cells (1); The housing (2) includes a main frame (21), and the main frame (21) is provided with a plurality of partitions (25). The plurality of partitions (25) divide the inner cavity of the main frame (21) into a plurality of mounting cavities (211). The main frame (21) is also provided with a first opening communicating with the mounting cavity (211). Each battery cell (1) can be inserted into a mounting cavity (211) through the first opening. The driving component (3) is connected to the main frame (21) and can drive any one of the battery cells (1) to move within the corresponding mounting cavity (211) and extend out of the first opening.

2. The battery module according to claim 1, characterized in that, The radial cross-section of the mounting cavity (211) is adapted to the radial cross-section of the battery cell (1); and / or, All apex corners on the radial section of the mounting cavity (211) are rounded.

3. The battery module according to claim 1 or 2, characterized in that, There are two first openings, which are directly opposite each other at both ends of the main frame (21) in the first direction. The shell (2) also includes a cover plate (22) and a back plate (23). The cover plate (22) and the back plate (23) are respectively connected to both ends of the main frame (21) and respectively block one of the first openings.

4. The battery module according to claim 3, characterized in that, The housing (2) also includes a plurality of elastic elements (24), each of which corresponds to a plurality of battery cells (1). The elastic elements (24) are sandwiched between the back plate (23) and the battery cells (1). The elastic elements (24) can be compressed or extended along a first direction.

5. The battery module according to claim 4, characterized in that, A guide post (231) is provided on the back plate (23) opposite to each of the battery cells (1). The elastic element (24) is sleeved on the guide post (231). One end of the elastic element (24) abuts against the corresponding battery cell (1), and the other end of the elastic element (24) abuts against the back plate (23).

6. The battery module according to claim 3, characterized in that, The main frame (21) is provided with a connecting part (26) at one end facing the cover plate (22). Along the first direction, the connecting part (26) extends close to the cover plate (22), and the cover plate (22) is connected to the connecting part (26).

7. The battery module according to claim 6, characterized in that, One of the cover plate (22) and the connecting part (26) is provided with a latching protrusion (261) and the other is provided with a latch (221), and the latching protrusion (261) can be engaged with the latch (221).

8. The battery module according to claim 6, characterized in that, The connecting part (26) is provided with a rotating connecting groove (262). Multiple driving members (3) are provided, and each driving member (3) corresponds to one of the multiple battery cells (1). The driving member (3) includes a rotating shaft (31), a connecting plate (32) and a pushing block (33). The connecting plate (32) is connected between the rotating shaft (31) and the pushing block (33). The rotating shaft (31) is rotatably disposed in the rotating connecting groove (262). The rotating shaft (31) can drive the pushing block (33) to push or pull the corresponding battery cell (1).

9. The battery module according to claim 8, characterized in that, The cross-section of the rotating connecting groove (262) is C-shaped. The arc end of the rotating connecting groove (262) is connected to the connecting part (26). The opening end of the rotating connecting groove (262) faces the cover plate (22). The rotating shaft (31) is inserted into the rotating connecting groove (262) from the opening end of the rotating connecting groove (262). The connecting plate (32) has a clearance opening (321) for avoiding the groove wall of the rotating connecting groove (262).

10. An energy storage device, characterized in that, The device includes a housing (200) and a battery module (100) as claimed in any one of claims 1-9. The housing (200) includes a frame (201) having two second openings opposite each other in a second direction, and at least one of the battery modules (100) is capable of being inserted into the frame (201) in a second direction perpendicular to the first direction.

11. The energy storage device according to claim 10, characterized in that, One of the box frame (201) and the shell (2) is provided with a sliding groove (2011) along the second direction, and the other is provided with a sliding rail (212), the sliding rail (212) slidingly engaging with the sliding groove (2011).

12. The energy storage device according to claim 10 or 11, characterized in that, The box body (200) also includes a front panel (202) and a rear baffle (203). The front panel (202) and the rear baffle (203) are respectively connected to the two sides of the box frame (201) and respectively block the two second openings.

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