Battery top cover and battery

Abstract

The utility model provides a battery top cover and a battery. The battery top cover comprises a cover plate; the lower plastic is arranged on one side of the cover plate in the thickness direction; at least one supporting assembly is arranged on each of a group of opposite sides, extending in the length direction, of the side, away from the cover plate, of the lower plastic, and arc-shaped surfaces are arranged on the sides, close to each other, of the two supporting assemblies. According to the utility model, at least one support component is arranged on each of the opposite sides in the length direction of one side, far away from the cover plate, of the lower plastic, and the support component is provided with the arc-shaped surface, so that the bending strength of the long side of the side surface of the lower plastic can be effectively improved, and the lower plastic can be prevented from deforming due to long-time soaking in electrolyte; and therefore, the battery cell can be protected and prevented from being extruded.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technical field, specifically, relate to a battery top cover and battery. BACKGROUND

[0002] The top cover of battery is usually composed of top cover plate and lower plastic, the top cover plate includes pole, the material of lower plastic is usually composed of polyethylene terephthalate (PET) material, this PET material soaks in electrolyte for a long time, and deformation is easy to produce, and this deformation can cause lower plastic to press down battery cell, and there is quality risk.

[0003] Therefore, the prior art has the problem of poor performance of battery top cover. UTILITY MODEL CONTENT

[0004] The utility model discloses a battery top cover and battery, to solve the problem of poor performance of battery top cover in prior art.

[0005] In order to realize the above-mentioned purpose, according to one aspect of the utility model, provide a kind of battery top cover, comprising: cover plate;Lower plastic, lower plastic is arranged in the thickness direction of cover plate one side;At least two support components, a group of at least one support component is respectively arranged on the opposite side of the length direction of the lower plastic along the lower plastic of the side of lower plastic away from cover plate, and two support components have arc surface on the side of mutual approach.

[0006] Further, lower plastic and support component are integrally formed structure.

[0007] Further, support component includes first support body, first support body has arc surface, and the transverse section of first support structure is fan-shaped.

[0008] Further, first support body is one-half cylinder or one-fourth cylinder.

[0009] Further, the axial direction of first support body and the length direction of lower plastic are mutually parallel.

[0010] Further, support component also includes second support body, first support body and second support body mutually adhere.

[0011] Further, in the thickness direction of cover plate, second support body projects from first support body;Or second support body and first support body are flush.

[0012] Further, the side of the width direction of lower plastic has the baffle extending along the thickness direction of cover plate, and the end of support component and baffle abut.

[0013] Further, support component is two, and two support components are symmetrically arranged about the midline of the width direction of lower plastic.

[0014] According to another aspect of the present application, a battery is provided, comprising the battery top cover.

[0015] According to the technical scheme of the present application, the battery top cover comprises a cover plate, a lower plastic, and at least two support assemblies. The lower plastic is arranged on one side of the cover plate in the thickness direction. At least one support assembly is arranged on each of the lengthwise opposite sides of the side of the lower plastic away from the cover plate, and the side of the two support assemblies close to each other has an arc surface.

[0016] When the battery top cover is used, since at least one support assembly is arranged on each of the lengthwise opposite sides of the side of the lower plastic away from the cover plate, and the support assembly has an arc surface, the bending strength of the long side of the lower plastic can be effectively improved, so that the lower plastic can be prevented from deforming due to long-term immersion in the electrolyte, and the protection of the battery cell can be provided to prevent the battery cell from being squeezed. Therefore, the battery top cover effectively solves the problem of poor performance of the battery top cover in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0018] Figure 1 An exploded view of the battery top cover of one specific embodiment of the present application is shown;

[0019] Figure 2 A schematic view of the positional relationship between the support assembly and the lower plastic of the battery top cover in the present application is shown, wherein the support assembly of the battery top cover has only a first support body;

[0020] Figure 3 A schematic view of the positional relationship between the lower plastic, the first support body, and the second support body of the battery top cover in the present application is shown, wherein the second support body of the support assembly of the battery top cover protrudes from the first support body in the thickness direction of the lower plastic;

[0021] Figure 4 A schematic view of the positional relationship between the lower plastic, the first support body, and the second support body of the battery top cover in the present application is shown, wherein the second support body of the support assembly of the battery top cover is flush with the first support body in the thickness direction of the lower plastic;

[0022] Figure 5 A schematic view of the positional relationship between the first support body and the second support body of the battery top cover in the present application is shown, wherein the first support body is a half-cylinder;

[0023] Figure 6The structural schematic diagram of the battery top cover when the lower plastic of the battery top cover in the prior art is deformed is shown.

[0024] The above drawings include the following reference signs:

[0025] 10, cover plate; 20, lower plastic; 21, baffle; 30, support assembly; 31, arc surface; 32, first support body; 33, second support body. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] In the present application, unless otherwise stated, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves. Similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0029] In order to solve the problem of poor performance of the battery top cover in the prior art, a battery top cover and a battery are provided.

[0030] Furthermore, the battery in the present application has the following battery top cover.

[0031] As shown in Figures 1 to 5 The battery top cover in the present application includes a cover plate 10, a lower plastic 20, and at least two support assemblies 30. The lower plastic 20 is arranged on one side of the cover plate 10 in the thickness direction; at least one support assembly 30 is arranged on each pair of edges in the length direction of the side of the lower plastic 20 away from the cover plate 10, and the side of the two support assemblies 30 close to each other has an arc surface 31.

[0032] When the battery top cover in the present application is used, since at least one support assembly 30 is arranged on each pair of edges extending in the length direction of the lower plastic 20 on the side of the lower plastic 20 away from the cover plate 10, and the support assembly 30 has an arc surface 31, the bending strength of the side of the lower plastic 20 can be effectively improved, so that the lower plastic 20 can be prevented from deforming due to long-term immersion in the electrolyte, and the protection of the battery cell can be provided to prevent the battery cell from being squeezed. Therefore, the battery top cover in the present application effectively solves the problem of poor performance of the battery top cover in the prior art.

[0033] As shown in Figure 6 Fig. 1 shows a schematic diagram of the structure of a battery top cover when the lower plastic 20 of the battery top cover is deformed in the prior art. That is, the lower plastic 20 will be deformed to protrude away from the cover plate 10 along the thickness direction after being soaked in the electrolyte for a long time, and thus the protruding deformation will press the battery cell.

[0034] Optionally, the support assembly 30 is two, and the two support assemblies 30 are symmetrically arranged about the middle line of the width direction of the lower plastic 20. That is, in the present application, one support assembly 30 is arranged on each of the two length direction sides of the lower plastic 20. Moreover, the two support assemblies 30 are of the same structure.

[0035] Specifically, the lower plastic 20 and the support assembly 30 are of an integrated structure. Or in other words, the support assembly 30 can be a part of the lower plastic 20 in the present application. Meanwhile, the manufacturing material of the lower plastic 20 and the manufacturing material of the support assembly 30 can be the same in the present application. Meanwhile, such an integrated design not only simplifies the manufacturing process and reduces the production cost, but also enhances the stability and consistency of the overall structure, is suitable for large-scale automated production, can effectively improve the production efficiency, and reduce the rate of defective products.

[0036] Specifically, Figures 2 to 5 As shown in Fig. 1, the support assembly 30 comprises a first support body 32, the first support body 32 has an arc surface 31, and the transverse cross section of the first support structure is a sector. Or in other words, the first support body 32 can be an incomplete cylinder in the present application, that is, the shape of the first support body 32 is the shape after the cylinder is cut axially. Moreover, the angle of the sector can be adjusted adaptively according to the actual use requirements in the present application.

[0037] Optionally, Figures 2 to 5 As shown in Fig. 1, the first support body 32 is a one-half cylinder or a one-fourth cylinder. Therefore, when the first support body 32 is a one-half cylinder, the radial cross section of the first support body 32 is a semicircle, that is, the angle of the sector at this time is 180 degrees. And when the first support body 32 is a one-fourth cylinder, the angle of the sector of the radial cross section of the first support body 32 is 90 degrees.

[0038] Optionally, the axial direction of the first support body 32 is parallel to the length direction of the lower plastic 20. That is, at this time, the axial direction of the first support body 32 extends along the length direction side of the lower plastic 20, and such a setting can effectively ensure the supporting effect of the first support body 32 on the lower plastic 20, so as to better prevent the lower plastic 20 from deforming.

[0039] Optionally, Figures 3 to 5As shown, the support assembly 30 also includes a second support body 33, with the first support body 32 and the second support body 33 fitting together. In this application, the second support body 33 is generally configured as a cuboid shape, and the thickness direction of the second support body 33 is the same as the width direction of the lower plastic 20, while the width direction of the second support body 33 is the same as the thickness direction of the lower plastic 20. Furthermore, regarding the location of the second support body 33, it is positioned on the side of the corresponding first support body 32 away from the other first support body 32. Alternatively, in the two support assemblies 30, the two first support bodies 32 are located between the two second support bodies 33. Additionally, in this application, the radial cross-sections of the second support body 33 and the first support body 32 are fitted together, or in other words, the surface of the first support body 32 used to fit with the second support body 33 is planar.

[0040] Of course, in this application, the first support 32 and the second support 33 can be integrally formed structures.

[0041] In this application, the thickness of the second support 33 ranges from 1 to 10 mm. Preferably, the thickness of the second support 33 ranges from 2 to 5 mm.

[0042] In one specific embodiment of this application, the second support 33 protrudes beyond the first support 32 in the thickness direction of the cover plate 10. This arrangement effectively prevents the first support 32 from squeezing the battery cell, thereby further improving the protective effect of the battery cover plate on the battery cell.

[0043] In one specific embodiment of this application, the second support 33 is flush with the first support 32 in the thickness direction of the cover plate 10. This arrangement ensures that the shape of both sides of the battery cover plate along its length towards the battery cell is more regular, thereby guaranteeing a better sealing effect after the battery cover plate is installed, and thus ensuring the battery's performance and stability.

[0044] Optionally, such as Figure 1 As shown, the lower plastic 20 has a baffle 21 extending along the thickness direction of the cover plate 10 on its side in the width direction, and the end of the support assembly 30 abuts against the baffle 21. Furthermore, in the thickness direction of the lower plastic 20, the baffle 21 may protrude beyond the support assembly 30, or the baffle 21 may protrude beyond the first support body 32. This arrangement ensures that the support assembly does not protrude beyond the baffle 21 in the thickness direction of the lower plastic 20, thereby ensuring that the battery top cover in this application can be properly assembled with other structures of the battery in this application.

[0045] Of course, the battery top cover in this application also has structures such as the explosion-proof valve under plastic, explosion-proof valve, liquid injection port and terminal positioning hole, which are existing technologies and will not be described in detail in this application.

[0046] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0047] 1、Since the at least one support assembly is arranged on the lengthwise opposite side of the lower plastic away from the cover plate, and the support assembly has an arc surface, the bending strength of the long side of the lower plastic can be effectively improved, so that the lower plastic can be prevented from deforming due to long-time soaking in the electrolyte, and the protection of the battery cell can be provided to prevent the battery cell from being extruded.

[0048] 2、Simple structure and stable performance.

[0049] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0050] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0051] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0052] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A battery top cover characterized by, The utility model relates to a battery top cover, comprising: a cover plate (10); a lower plastic (20) arranged on one side of the cover plate (10) in the thickness direction; at least two support assemblies (30), one group of the support assemblies (30) arranged on the opposite sides of the lower plastic (20) away from the cover plate (10) and extending along the length direction of the lower plastic (20), and the side of the two support assemblies (30) close to each other having an arc surface (31).

2. The battery header of claim 1, wherein, The lower plastic (20) and the support assembly (30) are integrally formed.

3. The battery header of claim 1, wherein, The support assembly (30) comprises a first support body (32) having the arc surface (31), and the transverse section of the first support structure is a sector.

4. The battery header of claim 3, wherein, The first support body (32) is a half cylinder or a quarter cylinder.

5. The battery cover of claim 3, wherein, The axial direction of the first support body (32) is parallel to the length direction of the lower plastic (20).

6. The battery header of claim 3, wherein, The support assembly (30) further comprises a second support body (33) adhering to the first support body (32).

7. The battery header of claim 6, wherein, In the thickness direction of the cover plate (10), the second support body (33) protrudes from the first support body (32); or the second support body (33) is flush with the first support body (32).

8. The battery top cover of any one of claims 1-7, wherein, The side of the lower plastic (20) in the width direction has a baffle (21) extending along the thickness direction of the cover plate (10), and the end of the support assembly (30) abuts against the baffle (21).

9. The battery top cover of any one of claims 1-7, wherein, The support assembly (30) is two, and the two support assemblies (30) are symmetrically arranged about the middle line of the width direction of the lower plastic (20).

10. A battery, characterized by The utility model relates to a battery top cover, comprising: a cover plate (10); a lower plastic (20) arranged on one side of the cover plate (10) in the thickness direction; at least two support assemblies (30), one group of the support assemblies (30) arranged on the opposite sides of the lower plastic (20) away from the cover plate (10) and extending along the length direction of the lower plastic (20), and the side of the two support assemblies (30) close to each other having an arc surface (31). The lower plastic (20) and the support assembly (30) are integrally formed. The support assembly (30) comprises a first support body (32) having the arc surface (31), and the transverse section of the first support structure is a sector. The first support body (32) is a half cylinder or a quarter cylinder. The axial direction of the first support body (32) is parallel to the length direction of the lower plastic (20). The support assembly (30) further comprises a second support body (33) adhering to the first support body (32). In the thickness direction of the cover plate (10), the second support body (33) protrudes from the first support body (32); or the second support body (33) is flush with the first support body (32). The side of the lower plastic (20) in the width direction has a baffle (21) extending along the thickness direction of the cover plate (10), and the end of the support assembly (30) abuts against the baffle (21). The support assembly (30) is two, and the two support assemblies (30) are symmetrically arranged about the middle line of the width direction of the lower plastic (20). The utility model relates to a battery top cover, comprising: a cover plate (10); a lower plastic (20) arranged on one side of the cover plate (10) in the thickness direction; at least two support assemblies (30), one group of the support assemblies (30) arranged on the opposite sides of the lower plastic (20) away from the cover plate (10) and extending along the length direction of the lower plastic (20), and the side of the two support assemblies (30) close to each other having an arc surface (31). The lower plastic (20) and the support assembly (30) are integrally formed. The support assembly (30) comprises a first support body (32) having the arc surface (31), and the transverse section of the first support structure is a sector. The first support body (32) is a half cylinder or a quarter cylinder. The axial direction of the first support body (32) is parallel to the length direction of the lower plastic (20). The support assembly (30) further comprises a second support body (33) adhering to the first support body (32). In the thickness direction of the cover plate (10), the second support body (33) protrudes from the first support body (32); or the second support body (33) is flush with the first support body (32). The side of the lower

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