Battery cell support and battery

Abstract

The utility model relates to the technical field of batteries, and provides a battery cell support and a battery, a battery cell comprises two stage groups, each stage group comprises a plurality of pole pieces stacked along a first direction, the pole pieces are relatively fixed, and the battery cell support comprises a side frame, a connecting assembly and an insulating film. Wherein the two side frames are arranged in parallel in the second direction, and the two ends, in the third direction, of the side frames can relatively swing in a plane perpendicular to the first direction; the connecting assembly is connected with the two side frames, the two stage groups are located on the two sides, in the third direction, of the connecting assembly respectively and clamped between the two side frames, and the two stage groups are connected through the tabs; the stage group and the side frames are wrapped in the insulating film, so that the two side frames always have the trend of clamping the stage group; and the first direction, the second direction and the third direction are vertical pairwise. And the distance between the two side frames in the second direction can be adjusted, so that the adaptability to the size of the stage group is improved, the universality is improved, and the assembly process of the battery is shortened.

Description

Technical Field

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

[0002] A battery pack is formed by stacking multiple electrodes along their thickness direction. Due to processing errors or other reasons, the size of the electrodes is not completely consistent, which may result in unevenness on the sides of the pack. Existing standard cell supports do not have adjustment functions and are all made according to the standard size of the electrodes. During assembly, electrodes larger than the standard size cannot be assembled with the cell support. The pack needs to be rearranged to replace the electrode, and the electrode needs to be reprocessed to meet the standard size before it can be reused. This makes the battery assembly process cumbersome and requires frequent adjustments.

[0003] Therefore, there is an urgent need for a cell support structure and battery to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a cell support and battery that can improve compatibility with different sized battery packs and simplify the battery assembly process.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A cell support structure, wherein the cell comprises two groups, each group comprising a plurality of electrode sheets stacked along a first direction, the electrode sheets being fixed relative to each other, and the cell support structure comprising:

[0007] The side frame has two parallel side frames in the second direction, and the two ends of the side frame in the third direction can swing relative to each other in a plane perpendicular to the first direction.

[0008] A connecting component connects the two side frames, and the two stages are respectively located on both sides of the connecting component in the third direction and sandwiched between the two side frames. The two stages are connected by tabs.

[0009] The insulating film, the aforementioned stage group and the aforementioned side frame are all wrapped inside the aforementioned insulating film, such that the two aforementioned side frames always tend to clamp the aforementioned stage group;

[0010] The first direction, the second direction, and the third direction mentioned above are all perpendicular to each other.

[0011] As a preferred technical solution for the aforementioned battery cell bracket, the aforementioned side frame and the aforementioned connecting component are integrally formed; or, the aforementioned connecting component is welded and fixed to the two aforementioned side frames respectively.

[0012] As a preferred technical solution for the aforementioned cell support, the thickness of the insulating film is 0.1 mm to 0.2 mm.

[0013] As a preferred technical solution of the above-mentioned cell support, the side frame includes a first stop and a second stop, the connecting component is connected to the first stop, the second stop is connected to the third-direction end of the first stop and is set at an angle to the first stop, the second stop is exposed outside the insulating film, and the stage is sandwiched between the second stop and the connecting component.

[0014] As a preferred technical solution of the above-mentioned cell support, the second baffle is provided with multiple through holes, which are arranged in a matrix, allowing fluid to contact the stage group through the through holes.

[0015] As a preferred technical solution of the above-mentioned cell support, the above-mentioned connecting component includes a connector and a protective component. The connector connects the two side frames. The connector and the protective component can be selectively fastened together. The electrode tab can be clamped between the connector and the protective component.

[0016] As a preferred technical solution for the aforementioned cell support, the aforementioned protective component is hinged to the aforementioned connecting component.

[0017] As a preferred technical solution for the aforementioned cell support, the dimensions of the aforementioned connector in the aforementioned third direction are 5mm to 8mm.

[0018] A battery is also provided, including a housing, the aforementioned stage assembly, and the aforementioned cell support, wherein the aforementioned stage assembly and the aforementioned cell support are installed inside the aforementioned housing, and the aforementioned housing is provided with a vent, wherein the aforementioned vent can be switched between open and closed states by an explosion-proof valve.

[0019] As a preferred technical solution for the aforementioned battery, the casing includes a casing body, a positive terminal cover, and a negative terminal cover. The positive terminal cover and the negative terminal cover are installed on opposite sides of the casing body in the third direction. The casing body is equipped with a first explosion-proof valve, and the positive terminal cover and the negative terminal cover are equipped with a second explosion-proof valve.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a battery cell support. The battery cell includes two stages, each stage comprising multiple electrode sheets stacked along a first direction and fixed relative to each other. The battery cell support includes side frames, connecting components, and an insulating film. Two side frames are arranged parallel to a second direction, and the two ends of the side frames in a third direction are capable of relative swinging in a plane perpendicular to the first direction. The connecting components connect the two side frames, and the two stages are located on either side of the connecting components in the third direction and sandwiched between the two side frames. The two stages are connected by electrode tabs. Both the stages and the side frames are encased in the insulating film, ensuring that the two side frames always tend to clamp the stages. The first, second, and third directions are perpendicular to each other.

[0022] Specifically, the side frame includes a first clamping segment and a second clamping segment arranged along a third direction. A connecting component connects the first clamping segment and the second clamping segment. The two first clamping segments and the connecting component form a first accommodating space, and the two second clamping segments and the connecting component form a second accommodating space. The first and second accommodating spaces are arranged along a third direction, and two stages are placed in the first and second accommodating spaces respectively. The two stages are connected by tabs, and the two side frames clamp the stages in a plane perpendicular to the first direction. Furthermore, the two ends of the side frames in the third direction can swing relative to each other in a plane perpendicular to the first direction. That is, the spacing between the two first clamping segments and the two second clamping segments can be adjusted independently to change the size of the first and / or second accommodating spaces, thereby increasing the adaptability to the stage size and improving versatility. Furthermore, the insulating film is used to prevent short-circuit overlap of the stages, and the insulating film can also bind and restrain the two side frames and the stages, so that the two frames always clamp the stages tightly. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the structure of the battery cell support provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the second retaining edge provided in an embodiment of the present utility model;

[0026] Figure 3 This is an exploded schematic diagram of the battery provided in an embodiment of the present invention;

[0027] Figure 4This is a cross-sectional schematic diagram of the battery provided in an embodiment of the present utility model;

[0028] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0029] In the picture:

[0030] X, first direction; Y, second direction; Z, third direction;

[0031] 100, grade group;

[0032] 200, Side frame; 201, First clamping section; 202, Second clamping section; 210, First retaining edge; 220, Second retaining edge; 221, Through hole; 230, First accommodating space; 240, Second accommodating space;

[0033] 300. Connecting component; 310. Connector; 320. Protective component;

[0034] 400. Shell; 410. Shell body; 411. First explosion-proof valve; 420. Positive end cap; 430. Negative end cap; 431. Second explosion-proof valve;

[0035] 500. Insulating film. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] 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.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figures 1 to 5 As shown, this utility model provides a battery cell support. The battery cell includes two groups 100, each group 100 including multiple electrode sheets stacked along a first direction X, which are fixed relative to each other. The battery cell support includes side frames 200, connecting components 300, and insulating film 500. Two side frames 200 are arranged parallel to the second direction Y, and the two ends of the side frames 200 in the third direction Z can swing relative to each other in a plane perpendicular to the first direction X. The connecting component 300 connects the two side frames 200. The two groups 100 are located on both sides of the connecting component 300 in the third direction Z and sandwiched between the two side frames 200. The two groups 100 are connected by electrode tabs. Both the group 100 and the side frames 200 are enclosed within the insulating film 500, so that the two side frames 200 always tend to clamp the group 100. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0041] Specifically, the side frame 200 includes a first clamping segment 201 and a second clamping segment 202 arranged along the third direction Z. A connecting component 300 is connected between the first clamping segment 201 and the second clamping segment 202. The two first clamping segments 201 and the connecting component 300 form a first accommodating space 230, and the two second clamping segments 202 and the connecting component 300 form a second accommodating space 240. The first accommodating space 230 and the second accommodating space 240 are arranged along the third direction Z. Two stages 100 are respectively placed in the first accommodating space 230 and the second accommodating space 240. The two stages 100 are connected by tabs. The two side frames 200 clamp the stages 100 in a plane perpendicular to the first direction X.

[0042] The stage group 100 is formed by stacking multiple electrode sheets sequentially along the first direction X. Due to processing errors or other reasons, the size of the electrode sheets is not completely consistent, which may result in unevenness on the sides of the stage group 100. The existing standard cell bracket does not have an adjustment function and is made according to the standard size of the electrode sheets. During assembly, electrode sheets larger than the standard size cannot be assembled with the cell bracket. The stage group 100 needs to be rearranged to replace the electrode sheet, and the electrode sheet needs to be reprocessed to meet the standard size before it can be reused. This makes the assembly process cumbersome and requires frequent adjustments.

[0043] Therefore, in this embodiment, the two ends of the side frame 200 in the third direction Z can swing relative to each other in a plane perpendicular to the first direction X. That is, the two first clamping segments 201 and the two second clamping segments 202 can adjust their spacing independently to change the size of the first accommodating space 230 and / or the second accommodating space 240, so as to increase the adaptability to the size of the stage group 100 and improve its versatility.

[0044] Furthermore, the insulating film 500 is used to prevent short circuits in the stage group 100, and the insulating film 500 can also bind and restrain the two side frames 200 and the stage group 100, so that the two side frames 200 always clamp the stage group 100.

[0045] For example, in this embodiment, the side frame 200 and the connecting component 300 are integrally formed; or, the connecting component 300 is welded and fixed to the two side frames 200 respectively. This configuration simplifies the manufacturing process and ensures high reliability of the connection between the two side frames 200 and the connecting component 300.

[0046] It should be noted that when the above connection method is used, at least one of the two side frames 200 can undergo elastic deformation, so that the size of the accommodating space enclosed by the two side frames 200 and the connecting component 300 can be adjusted.

[0047] In other embodiments, the first clamping segment 201 and the second clamping segment 202 of the side frame 200 are separate structures. The first clamping segment 201 and the second clamping segment 202 are respectively hinged to the connecting component 300, and the hinge axis is parallel to the first direction X. The swing of the first clamping segment 201 relative to the connecting component 300 and the swing of the second clamping segment 202 relative to the connecting component 300 are independent of each other and do not affect each other. Further, in this embodiment, an elastic element is provided at the connection between the first clamping segment 201 and the second clamping segment 202 and the connecting component 300. The elastic element makes the first clamping segment 201 of the two side frames 200 always tend to move closer to each other, and the second clamping segment 202 of the two side frames 200 always tend to move closer to each other, thereby achieving clamping of the stage group 100 and reducing the tension force on the insulating film 500.

[0048] Preferably, the thickness of the insulating film 500 is between 0.1 mm and 0.2 mm. Tests have shown that when the thickness of the insulating film 500 is between 0.1 mm and 0.2 mm, it has good insulation capabilities, occupies relatively little space, and does not obstruct gas flow.

[0049] Optionally, the side frame 200 includes a first stop 210 and a second stop 220. The connecting component 300 is connected to the first stop 210. The second stop 220 is connected to the third-direction Z end of the first stop 210 and is set at an angle to the first stop 210. The second stop 220 is exposed outside the insulating film 500. The stage 100 is sandwiched between the second stop 220 and the connecting component 300.

[0050] Thus, the side frame 200 and the connecting component 300 form an approximate H-shaped structure, and the second stop 220 can restrict the movement of the stage 100 relative to the connecting component 300 in the third direction Z.

[0051] For example, both the first clamping section 201 and the second clamping section 202 include a first stop 210 and a second stop 220. In this embodiment, the first stop 210 of the first clamping section 201 and the first stop 210 of the second clamping section 202 are integrally formed.

[0052] For example, the first flange 210 and the second flange 220 are integrally formed or fixedly connected.

[0053] In other embodiments, the first stop 210 and the second stop 220 are hinged together, and an elastic element is provided at the hinge. The elastic element enables the second stop 220 and the first stop 210 to clamp at a smaller angle. That is, the second stop 220 always rotates toward the side closer to the stage group 100, thereby clamping the stage group 100.

[0054] like Figure 2As shown, optionally, the second baffle 220 has multiple through holes 221 arranged in a matrix, allowing fluid to contact the stage 100 through the through holes 221. This configuration allows the electrolyte to pass through the through holes 221 and contact the stage 100, wetting it. Furthermore, the matrix arrangement allows for better dispersion of the electrolyte, ensuring sufficient contact with the stage 100. Additionally, when the stage 100 is in an abnormal operating state and generates a large amount of gas, the gas can be discharged through the through holes 221, resulting in a dispersed and smooth gas path.

[0055] Optionally, the connecting assembly 300 includes a connector 310 and a protective member 320. The connector 310 connects the two side frames 200. The connector 310 and the protective member 320 can be selectively engaged. The electrode tab can be clamped between the connector 310 and the protective member 320.

[0056] Specifically, the tabs of the two stages 100 are fixed by welding, and the welded tabs can be clamped between the connector 310 and the protective component 320 to prevent damage to the tabs.

[0057] For example, in this embodiment, the protective member 320 and the connecting member 310 are hinged. Specifically, the hinge axis of the protective member 320 and the connecting member 310 is parallel to the third direction Z.

[0058] In other embodiments, the connector 310 and the protective member 320 are connected by a plug-in method.

[0059] Preferably, the dimension of the connector 310 in the third direction Z is 5mm to 8mm.

[0060] like Figures 3 to 5 As shown, a battery is also provided, including a housing 400, a stage 100 and the aforementioned cell support. The stage 100 and the cell support are installed inside the housing 400. The housing 400 is provided with a vent, which can be switched between open and closed states by an explosion-proof valve.

[0061] When stage 100 is in an abnormal state, it will generate a large amount of gas, causing the pressure inside the housing 400 to rise. When the pressure inside the housing 400 exceeds the preset pressure threshold of the explosion-proof valve, the explosion-proof valve opens, allowing the indoor and outdoor environments of the housing 400 to be connected. The gas can then be discharged to the outside of the housing 400 through the vent, thereby relieving pressure and protecting the battery.

[0062] Optionally, the housing 400 includes a housing body 410, a positive end cover 420, and a negative end cover 430. The positive end cover 420 and the negative end cover 430 are installed on opposite sides of the housing body 410 in the third direction Z. A first explosion-proof valve 411 is installed on the housing body 410, and a second explosion-proof valve 431 is installed on the positive end cover 420 and the negative end cover 430. In this way, the explosion-proof valves distributed in a distributed manner in the housing 400 allow gas to be discharged from the housing 400 through the nearest explosion-proof valve, shortening the gas path and improving the pressure relief efficiency.

[0063] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A battery cell support, the battery cell comprising two groups (100), said group (100) comprising a plurality of electrodes stacked along a first direction (X), the electrodes being fixed relative to each other, characterized in that, The cell support includes: Side frame (200), two side frames (200) are arranged parallel to the second direction (Y), and the two ends of the side frames (200) in the third direction (Z) can swing relative to each other in a plane perpendicular to the first direction (X); A connecting component (300) connects two side frames (200), and two stages (100) are respectively located on both sides of the connecting component (300) in the third direction (Z) and sandwiched between the two side frames (200). The two stages (100) are connected by tabs. An insulating film (500) is provided, in which the stage (100) and the side frame (200) are both enclosed, such that the two side frames (200) always tend to clamp the stage (100); The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

2. The cell support according to claim 1, characterized in that, The side frame (200) and the connecting component (300) are integrally formed; or, the connecting component (300) is welded and fixed to the two side frames (200) respectively.

3. The cell support according to claim 1, characterized in that, The thickness of the insulating film (500) is 0.1 mm to 0.2 mm.

4. The cell support according to claim 1, characterized in that, The side frame (200) includes a first stop (210) and a second stop (220). The connecting component (300) is connected to the first stop (210). The second stop (220) is connected to the end of the first stop (210) in the third direction (Z) and is set at an angle to the first stop (210). The second stop (220) is exposed outside the insulating film (500). The stage (100) is sandwiched between the second stop (220) and the connecting component (300).

5. The cell support according to claim 4, characterized in that, The second baffle (220) has multiple through holes (221) arranged in a matrix, allowing fluid to contact the stage group (100) through the through holes (221).

6. The cell support according to claim 1, characterized in that, The connecting assembly (300) includes a connector (310) and a protective member (320). The connector (310) connects the two side frames (200). The connector (310) and the protective member (320) can be selectively engaged. The tab can be clamped between the connector (310) and the protective member (320).

7. The cell support according to claim 6, characterized in that, The protective element (320) is hinged to the connecting element (310).

8. The cell support according to claim 6, characterized in that, The dimension of the connector (310) in the third direction (Z) is 5mm to 8mm.

9. A battery, characterized in that, The device includes a housing (400), the stage group (100), and the cell support according to any one of claims 1-8. The stage group (100) and the cell support are installed inside the housing (400). The housing (400) is provided with a vent, which can be switched between open and closed states by an explosion-proof valve.

10. The battery according to claim 9, characterized in that, The housing (400) includes a housing body (410), a positive end cover (420), and a negative end cover (430). The positive end cover (420) and the negative end cover (430) are installed on opposite sides of the housing body (410) in the third direction (Z). The housing body (410) is equipped with a first explosion-proof valve (411), and the positive end cover (420) and the negative end cover (430) are equipped with a second explosion-proof valve (431).

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