Battery pack

Abstract

The utility model provides a kind of battery pack, including box, multiple partition structures and support structure, multiple partition structures are spaced apart in the accommodating groove of box;Support structure is set in the two sides of the direction partition structure of electric core;Each partition structure has first limit part on the surface of the side of sub accommodating groove, and first limit part is used to with the surface of the side of support structure away from electric core interference fit;And / or, each support structure has second limit part on the surface of the side of same side partition structure, and second limit part is used to with the surface of the side of partition structure interference fit to sub accommodating groove.The utility model solves the electric core in prior art by glue bonding fixed in battery pack inside, reduce the speed of entire production process, increase waiting cost, and glue after solidification is very difficult to remove completely, not only increase the disassembly difficulty of battery pack, but also in disassembly process, it is extremely likely to cause damage to electric core, affect the secondary use or recycling of electric core.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery pack. Background Technology

[0002] In the field of new energy vehicles, battery packs, as the core component of electric vehicles, are undergoing rapid development and transformation in their design and manufacturing technologies. With the rise of CTP (Cell To Pack) technology, the structural design of battery packs is evolving towards greater efficiency and compactness. Currently, battery cells are fixed inside the battery pack using adhesive. While this method provides a certain level of fixation, it presents several problems in practical applications. For example, the adhesive curing process takes time, directly impacting the assembly efficiency and production cycle of the battery pack. In mass production environments, the curing time can become a bottleneck on the production line, slowing down the entire process and increasing waiting costs. Furthermore, while the bonding strength after curing may meet the cell fixation requirements, it creates inconvenience during disassembly and maintenance. Cured adhesive is difficult to completely remove, increasing the difficulty of disassembling the battery pack and potentially damaging the cells during disassembly, affecting their reuse or recycling. Utility Model Content

[0003] The main purpose of this utility model is to provide a battery pack that solves the problems in the prior art where battery cells are fixed inside the battery pack by adhesive, which reduces the speed of the entire production process, increases waiting costs, and makes it difficult to completely remove the cured adhesive. This not only increases the difficulty of disassembling the battery pack, but also may damage the battery cells during disassembly, affecting the secondary use or recycling of the battery cells.

[0004] To achieve the above objectives, this utility model provides a battery pack, including a housing, multiple partition structures, and a support structure. The housing has a receiving groove; the multiple partition structures are spaced apart within the receiving groove, dividing it into multiple sub-receiving grooves, each sub-receiving groove for accommodating at least one battery cell; the support structures are arranged in pairs on both sides of the battery cell facing the partition structures; each partition structure has a first limiting portion on its surface facing the sub-receiving groove, which is used for interference fit with the surface of the support structure facing away from the battery cell to limit the battery cell with the support structure within the sub-receiving groove; and / or, each support structure has a second limiting portion on its surface facing the corresponding partition structure on the same side, which is used for interference fit with the surface of the partition structure facing the sub-receiving groove to limit the battery cell with the support structure within the sub-receiving groove.

[0005] In an exemplary embodiment, the partition structure includes a partition plate body and a first limiting part, wherein the first limiting part includes a limiting buckle disposed on the surface of the partition plate body facing the sub-receiving groove; wherein the surface of the limiting buckle facing the sub-receiving groove is provided with a first limiting protrusion, the first limiting protrusion being used for interference fit with the surface of the support structure facing away from the battery cell.

[0006] In an exemplary embodiment, the partition body has an avoidance notch; the limiting buckle has a fixed part and a movable part, the first end of the limiting buckle is connected to the edge of the avoidance notch to form the fixed part, the second end of the limiting buckle is a free end to form the movable part, and the movable part is located at the avoidance notch so that the avoidance notch is used to provide deformation space for the movable part; at least a first limiting protrusion is provided on the surface of the movable part facing the sub-receiving groove.

[0007] In an exemplary embodiment, in the direction in which the cell with the support structure slides into the sub-receiving slot, the fixed part is located above the movable part, and at least the outer contour line of the movable end of the movable part is provided with a distance between it and the notch contour line of the avoidance notch.

[0008] In an exemplary embodiment, the battery pack further includes a plurality of limiting blocks, with at least one limiting block between two adjacent partition structures arranged opposite to each other. The limiting blocks are used to provide a force to the movable part toward the side of the support structure on the same side, so that the movable part and the surface of the support structure on the same side away from the battery cell are interference-fitted.

[0009] In one exemplary embodiment, there are multiple first limiting protrusions, which are evenly distributed on the surface of the movable part facing the sub-receiving groove; and / or, there are multiple first limiting protrusions, which form a serrated structure in the direction in which the battery cell with the support structure slides into the sub-receiving groove.

[0010] In an exemplary embodiment, the second limiting portion is a second limiting protrusion protruding from the surface of the support structure facing the corresponding partition structure on the same side, and the second limiting protrusion is an elastic protrusion.

[0011] In one exemplary embodiment, each partition structure is welded to the housing; the paired support structures are bonded to the corresponding battery cells with adhesive backing.

[0012] In one exemplary embodiment, each partition structure is made of metal; each support structure is made of plastic.

[0013] In one exemplary embodiment, the support structure is L-shaped such that a portion of the support structure is connected to at least a portion of the side surface of the battery cell, and another portion of the support structure is connected to at least a portion of the bottom surface of the battery cell.

[0014] The present invention provides a battery pack comprising a housing, multiple partition structures, and a support structure. The housing has a receiving groove; the multiple partition structures are spaced apart within the receiving groove, dividing it into multiple sub-receiving grooves, each sub-receiving groove accommodating at least one battery cell; the support structures are arranged in pairs on both sides of the battery cell facing the partition structures; each partition structure has a first limiting portion on its surface facing the sub-receiving groove, which is used for interference fit with the surface of the support structure facing away from the battery cell to limit the battery cell with the support structure within the sub-receiving groove; and / or, each support structure has a second limiting portion on its surface facing the corresponding partition structure on the same side, which is used for interference fit with the surface of the partition structure facing the sub-receiving groove to limit the battery cell with the support structure within the sub-receiving groove.

[0015] By placing the support structures in pairs on both sides of the cell facing the partition structure, the system not only protects the cell but also allows for direct insertion of the cell with the support structure into the sub-receiving slot. Furthermore, by providing a first limiting part on the surface of each partition structure facing the sub-receiving slot, the first limiting part can be used to interference fit with the surface of the support structure facing away from the cell, thereby limiting the cell with the support structure within the sub-receiving slot. This significantly improves the assembly efficiency of the battery pack, reduces its production cost, enhances the cell's fixation, and improves the overall structural stability of the battery pack.

[0016] Furthermore, by having a second limiting part on one side surface of each support structure facing the corresponding partition structure, the second limiting part can be used to interference fit with the surface of the partition structure facing the sub-accommodating groove, thereby limiting the battery cell with the support structure in the sub-accommodating groove, which greatly improves the assembly efficiency of the battery pack, reduces the production cost of the battery pack, helps to enhance the fixing effect of the battery cell, and improves the overall structural stability of the battery pack. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A partial structural schematic diagram of a battery pack according to an alternative embodiment of the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of the battery pack in the image;

[0020] Figure 3It shows Figure 2 A magnified structural diagram at point A in the diagram;

[0021] Figure 4 It shows Figure 2 A magnified structural diagram at point B in the diagram;

[0022] Figure 5 It shows Figure 2 A magnified structural diagram at point C;

[0023] Figure 6 It shows Figure 2 The diagram shows the supporting structure and the battery cell in the assembly state.

[0024] The above figures include the following reference numerals:

[0025] 10. Box body; 11. Receiving tank;

[0026] 20. Divider structure; 21. Divider plate body; 211. Clearance notch; 22. Limiting buckle; 221. First limiting protrusion;

[0027] 30. Battery cell; 40. Support structure; 50. Limiting block. 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] To address the issues in existing technologies where battery cells are glued to the inside of the battery pack, which slows down the entire production process, increases waiting costs, and makes it difficult to completely remove the cured glue, thus increasing the difficulty of disassembling the battery pack and potentially damaging the battery cells during disassembly, affecting their reuse or recycling, this invention provides a battery pack.

[0030] like Figures 1 to 6As shown, the battery pack includes a housing 10, multiple partition structures 20, and a support structure 40. The housing 10 has a receiving groove 11. The multiple partition structures 20 are spaced apart in the receiving groove 11 and divide the receiving groove 11 into multiple sub-receiving grooves. Each sub-receiving groove is used to accommodate at least one battery cell 30. The support structures 40 are arranged in pairs on both sides of the battery cell 30 facing the partition structure 20. Each partition structure 20 has a first limiting portion on the surface facing the sub-receiving groove. The first limiting portion is used to interfere with the surface of the support structure 40 on the side away from the battery cell 30 to limit the battery cell 30 with the support structure 40 in the sub-receiving groove. And / or, each support structure 40 has a second limiting portion on the surface facing the corresponding partition structure 20 on the same side. The second limiting portion is used to interfere with the surface of the partition structure 20 on the side facing the sub-receiving groove to limit the battery cell 30 with the support structure 40 in the sub-receiving groove.

[0031] By pairing the support structures 40 on both sides of the cell 30 facing the partition structure 20, the support structures 40 are provided to protect the cell 30 while also ensuring that the cell 30 with the support structures 40 can be directly inserted into the sub-accepting slot. At the same time, by providing a first limiting part on the surface of each partition structure 20 facing the sub-accepting slot, the first limiting part can be used to interference fit with the surface of the support structure 40 away from the cell 30, thereby limiting the cell 30 with the support structures 40 in the sub-accepting slot. This greatly improves the assembly efficiency of the battery pack, reduces the production cost of the battery pack, enhances the fixing effect of the cell 30, and improves the overall structural stability of the battery pack.

[0032] Furthermore, by having a second limiting part on one side surface of each support structure 40 facing the corresponding partition structure 20, the second limiting part can be used to interference fit with the surface of the partition structure 20 facing the sub-accepting groove, thereby limiting the battery cell 30 with the support structure 40 in the sub-accepting groove, which greatly improves the assembly efficiency of the battery pack, reduces the production cost of the battery pack, helps to enhance the fixing effect of the battery cell 30, and improves the overall structural stability of the battery pack.

[0033] Furthermore, it should be noted that in this application, the cyclic expansion force on both sides of the length direction of the battery cell 30 is relatively small. By providing support structures 40 on both sides of the length direction of the battery cell 30, and by interfering with the surface of the first limiting part and the support structure 40 on the side away from the battery cell 30, the battery cell 30 is squeezed on both sides of the length direction, which helps to resist the expansion of both sides of the length direction of the battery cell 30.

[0034] like Figure 2As shown, the partition structure 20 for limiting the same battery cell 30 has at least two first limiting portions on one side surface, and the at least two first limiting portions are spaced apart along the height direction of the battery cell 30; or, the support structure 40 for limiting the same battery cell 30 has at least two second limiting portions on one side surface, and the at least two second limiting portions are spaced apart along the height direction of the battery cell 30. This ensures that at least two first limiting portions can effectively interference fit with the surface of the support structure 40 on the side opposite to the battery cell 30; or, ensures that at least two second limiting portions can effectively interference fit with the surface of the partition structure 20 on the side facing the sub-receiving groove.

[0035] like Figure 2 and Figure 4 As shown, the partition structure 20 includes a partition plate body 21 and a first limiting part. The first limiting part includes a limiting buckle 22 provided on the surface of the partition plate body 21 facing the sub-accommodating slot. The limiting buckle 22 has a first limiting protrusion 221 protruding from the surface facing the sub-accommodating slot. The first limiting protrusion 221 is used for interference fit with the surface of the support structure 40 facing away from the battery cell 30. In this way, by setting the partition structure 20 to include the partition plate body 21 and the first limiting part, it is ensured that the partition plate body 21 can divide the accommodating slot 11 into multiple sub-accommodating slots, while also ensuring that the first limiting protrusion 221 on the limiting buckle 22 on the surface of the partition plate body 21 facing the sub-accommodating slot can effectively interfere fit with the surface of the support structure 40 facing away from the battery cell 30.

[0036] It should be noted that in this application, the partition plate body 21 and the first limiting part are welded together.

[0037] Optionally, the material of the partition plate body 21 and the limiting buckle 22 is the same as that of the box body 10, which can be steel or aluminum, to ensure the weldability of the partition plate body 21 and the box body 10, as well as the weldability of the limiting buckle 22 and the partition plate body 21.

[0038] like Figure 4 As shown, the partition plate body 21 has an clearance notch 211; the limiting buckle 22 has a fixed part and a movable part. The first end of the limiting buckle 22 is connected to the edge of the clearance notch 211 to form the fixed part, and the second end of the limiting buckle 22 is a free end to form the movable part. The movable part is located at the clearance notch 211 so that the clearance notch 211 provides deformation space for the movable part; at least a first limiting protrusion 221 is provided on the surface of the movable part facing the sub-receiving groove. In this way, the clearance notch 211 provides deformation space for the movable part of the limiting buckle 22.

[0039] like Figure 3 and Figure 4As shown, in the direction in which the cell 30, for which the support structure 40 is provided, slides into the sub-receiving groove, the fixed part is located above the movable part, and at least the outer contour line of the movable end of the movable part is provided with a distance between it and the notch contour line of the clearance notch 211. In this way, by providing a distance between the outer contour line of the movable end of the movable part and the notch contour line of the clearance notch 211, it is ensured that the movable end of the movable part will not interfere with the notch edge of the clearance notch 211 during deformation.

[0040] like Figure 2 As shown, the battery pack also includes multiple limiting blocks 50. At least one limiting block 50 is provided between two adjacent partition structures 20 that are arranged opposite to each other. The limiting block 50 is used to provide a force to the movable part toward the support structure 40 on the same side, so that the movable part and the surface of the support structure 40 on the same side away from the cell 30 are in an interference fit. In this way, by providing at least one limiting block 50 between two adjacent partition structures 20, the limiting block 50 can provide a force to the movable part toward the support structure 40 on the same side, thereby enabling the movable part and the surface of the support structure 40 on the same side away from the cell 30 to be effectively in an interference fit.

[0041] like Figures 2 to 5 As shown, the dividing structure 20 located on the edge side is a single unit; see the enlarged partial illustration for details. Figure 3 and Figure 4 The dividing structure 20 located on the middle side consists of two opposite structures, as shown in the enlarged partial diagram. Figure 5 .

[0042] Optionally, the limiting block 50 is made of a rigid material.

[0043] It should be noted that in this application, there are multiple first limiting protrusions 221, which are evenly distributed on the surface of the movable part facing the sub-accommodating groove. This helps to increase the contact area of ​​the interference fit between the limiting buckle 22 and the surface of the support structure 40 facing away from the battery cell 30.

[0044] like Figure 3 and Figure 4 As shown, there are multiple first limiting protrusions 221, and these protrusions form a serrated structure in the direction in which the battery cell 30, on which the support structure 40 is provided, slides into the sub-accommodating groove. This ensures the reliability of the interference fit between the serrated protrusions 221 and the surface of the support structure 40 on the side away from the battery cell 30.

[0045] It should be noted that, in one embodiment of this application (not shown), there are multiple first limiting protrusions 221, and the multiple first limiting protrusions 221 are evenly distributed on the surface of the movable part facing the sub-accepting groove; the multiple first limiting protrusions 221 form a sawtooth structure in the direction in which the battery cell 30, on which the support structure 40 is provided, slides into the sub-accepting groove.

[0046] It should be noted that, in one embodiment of this application (not shown), the second limiting portion is a second limiting protrusion protruding from the surface of the support structure 40 facing the corresponding partition structure 20 on the same side, and the second limiting protrusion is an elastic protrusion. Thus, the elastic protrusion itself is elastic, effectively achieving an interference fit with the surface of the partition structure 20 facing the sub-accommodating groove.

[0047] It should be noted that in this application, each partition structure 20 is welded to the housing 10; the paired support structures 40 are bonded to their corresponding battery cells 30 via adhesive. This ensures the reliability of the connection between each partition structure 20 and the housing 10, and the reliable connection between the paired support structures 40 and their corresponding battery cells 30 via adhesive.

[0048] Furthermore, each partition structure 20 is made of metal, and each support structure 40 is made of plastic. This ensures that each partition structure 20 can be effectively welded to the housing 10, and that the paired support structures 40 can be effectively bonded to their respective battery cells 30.

[0049] like Figure 5 As shown, the support structure 40 is L-shaped, such that a portion of the support structure 40 is connected to at least a portion of the side surface of the battery cell 30, and another portion of the support structure 40 is connected to at least a portion of the bottom surface of the battery cell 30. This allows the L-shaped support structure 40 to provide effective support for the bottom of the battery cell 30 and effective protection for both sides of the battery cell assembly along its length.

[0050] like Figure 2 As shown, considering that this application includes multiple battery cell groups, each battery cell group includes multiple battery cells 30, the L-shaped support structure 40 can be a structure that adapts to a single battery cell 30, or it can be a longer structure that adapts to a group of battery cells.

[0051] It should be noted that, in this application, the battery pack assembly process is as follows: 1) Weld the separator body 21 and the limiting buckle 22 together to form a separator structure 20; 2) Weld at least one edge (which may be the bottom edge or the front and rear edges) of the assembled separator structure 20 to the housing 10; 3) Apply adhesive to the inner surface of the support structure 40 and bond it to both sides of the cell 30 along its length; 4) Place the bonded cell 30 and support structure 40 into the corresponding sub-accommodating slot; 5) Insert the limiting plug 50 between two adjacent separator structures 20.

[0052] The present invention provides a battery pack comprising a housing 10, a plurality of partition structures 20, and a support structure 40. The housing 10 has a receiving groove 11. The plurality of partition structures 20 are spaced apart within the receiving groove 11, dividing the receiving groove 11 into a plurality of sub-receiving grooves, each sub-receiving groove being used to accommodate at least one battery cell 30. The support structures 40 are arranged in pairs on both sides of the battery cell 30 facing the partition structures 20. Each partition structure 20 has a first limiting portion on its surface facing the sub-receiving groove, which is used for interference fit with the surface of the support structure 40 on the side opposite to the battery cell 30, thereby limiting the battery cell 30 with the support structure 40 within the sub-receiving groove. Alternatively, each support structure 40 has a second limiting portion on its surface facing the corresponding partition structure 20 on the same side, which is used for interference fit with the surface of the partition structure 20 on the side facing the sub-receiving groove, thereby limiting the battery cell 30 with the support structure 40 within the sub-receiving groove.

[0053] By pairing the support structures 40 on both sides of the cell 30 facing the partition structure 20, the support structures 40 are provided to protect the cell 30 while also ensuring that the cell 30 with the support structures 40 can be directly inserted into the sub-accepting slot. At the same time, by providing a first limiting part on the surface of each partition structure 20 facing the sub-accepting slot, the first limiting part can be used to interference fit with the surface of the support structure 40 away from the cell 30, thereby limiting the cell 30 with the support structures 40 in the sub-accepting slot. This greatly improves the assembly efficiency of the battery pack, reduces the production cost of the battery pack, enhances the fixing effect of the cell 30, and improves the overall structural stability of the battery pack.

[0054] Furthermore, by having a second limiting part on one side surface of each support structure 40 facing the corresponding partition structure 20, the second limiting part can be used to interference fit with the surface of the partition structure 20 facing the sub-accepting groove, thereby limiting the battery cell 30 with the support structure 40 in the sub-accepting groove, which greatly improves the assembly efficiency of the battery pack, reduces the production cost of the battery pack, helps to enhance the fixing effect of the battery cell 30, and improves the overall structural stability of the battery pack.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: The housing (10) has a receiving groove (11); Multiple partition structures (20) are spaced apart in the receiving groove (11) and divide the receiving groove (11) into multiple sub-receiving grooves, each of which is used to accommodate at least one battery cell (30); A support structure (40) is provided in pairs on both sides of the cell (30) facing the partition structure (20); Each of the partition structures (20) has a first limiting portion on the surface facing the sub-accommodating groove. The first limiting portion is used to interference fit with the surface of the support structure (40) facing away from the battery cell (30) to limit the battery cell (30) with the support structure (40) in the sub-accommodating groove; and / or, Each of the support structures (40) has a second limiting portion on one side surface facing the corresponding partition structure (20). The second limiting portion is used to interference fit with the surface of the partition structure (20) facing the sub-accommodating groove to limit the battery cell (30) on which the support structure (40) is provided in the sub-accommodating groove.

2. The battery pack according to claim 1, characterized in that, The partition structure (20) includes: Partition plate body (21); The first limiting part includes a limiting buckle (22) disposed on the surface of the partition plate body (21) facing the sub-accommodating groove. The limiting buckle (22) has a first limiting protrusion (221) protruding from the surface facing the sub-accommodating groove. The first limiting protrusion (221) is used to interference fit with the surface of the support structure (40) on the side away from the battery cell (30).

3. The battery pack according to claim 2, characterized in that, The partition plate body (21) has an avoidance notch (211); The limiting buckle (22) has a fixed part and a movable part. The first end of the limiting buckle (22) is connected to the edge of the clearance notch (211) to form the fixed part. The second end of the limiting buckle (22) is a free end to form the movable part. The movable part is located at the clearance notch (211) so that the clearance notch (211) can provide deformation space for the movable part. The first limiting protrusion (221) is provided on at least the surface of the movable part facing the sub-receiving groove.

4. The battery pack according to claim 3, characterized in that, In the direction in which the cell (30) with the support structure (40) slides into the sub-receiving groove, the fixed part is located above the movable part, and at least the outer contour line of the movable end of the movable part is provided with a distance between it and the notch contour line of the clearance notch (211).

5. The battery pack according to claim 3, characterized in that, The battery pack also includes: A plurality of limiting blocks (50) are provided, and at least one limiting block (50) is provided between two adjacent separating structures (20) arranged opposite to each other. The limiting block (50) is used to provide the movable part with a force toward the support structure (40) on the same side, so that the movable part and the support structure (40) on the same side opposite to the cell (30) have an interference fit.

6. The battery pack according to claim 3, characterized in that, There are multiple first limiting protrusions (221), and the multiple first limiting protrusions (221) are evenly distributed on the surface of the movable part facing the sub-receiving groove; and / or, There are multiple first limiting protrusions (221), and the multiple first limiting protrusions (221) form a sawtooth structure in the direction in which the battery cell (30) with the support structure (40) slides into the sub-accommodating groove.

7. The battery pack according to any one of claims 1 to 6, characterized in that, The second limiting part is a second limiting protrusion protruding from the surface of the support structure (40) facing the corresponding side of the partition structure (20), and the second limiting protrusion is an elastic protrusion.

8. The battery pack according to any one of claims 1 to 6, characterized in that, Each of the partition structures (20) is welded to the housing (10); The paired support structures (40) are connected to the corresponding battery cells (30) by adhesive backing.

9. The battery pack according to claim 8, characterized in that, Each of the aforementioned partition structures (20) is made of metal; Each of the aforementioned support structures (40) is made of plastic.

10. The battery pack according to any one of claims 1 to 6, characterized in that, The support structure (40) is L-shaped, such that a portion of the support structure (40) is connected to at least a portion of the side surface of the battery cell (30), and another portion of the support structure (40) is connected to at least a portion of the bottom surface of the battery cell (30).

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