Lower plastic part and battery

Abstract

The utility model belongs to the technical field of battery structures, and discloses a lower plastic part and a battery. The lower plastic part comprises a body part and an abutting part, the abutting part is used for abutting against the battery cell, the abutting part protrudes from the body part to the battery cell, the abutting part is provided with a first extending section and a second extending section, the first extending section extends in the width direction of the body part, and the second extending section is arranged in the length direction of the body part. The first extension section and the second extension section are connected, and anti-scraping chamfers are arranged at the edges, facing the battery cell, of the first extension section and the second extension section. By arranging the anti-scraping chamfer, a sharp corner facing the battery cell on the existing lower plastic part is avoided, and the phenomenon that the battery cell is scratched in the assembling process can be greatly avoided, so that the battery cell is protected, and the yield of production is ensured. And meanwhile, in the use process, scratches caused by shaking of the battery cell can be avoided, so that the safety and the use performance of the battery are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery structures, in particular to a lower plastic part and a battery. Background Art

[0002] During the battery assembly process, the battery cell—the core energy storage component, consisting of a positive electrode, a negative electrode, and a separator—is assembled first. The cell is then placed in a pre-prepared casing, which provides protection and support. Finally, the top cover assembly is installed, enclosing the battery and containing the current input and output ports, while ensuring electrical connection to the cell. Throughout this process, the top cover assembly, casing, and cell must precisely fit together to ensure the battery's seal, safety, and performance.

[0003] However, during the installation of the top cover assembly, the battery cells are often scratched, and even the aluminum-plastic film is scratched, which seriously affects the normal production of the battery and increases the defective rate and usage risk of the battery.

[0004] Based on the above, a lower plastic component and a battery are urgently needed to solve the above technical problems. Utility Model Content

[0005] One purpose of the present invention is to provide a lower plastic component that can avoid scratching the battery core.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A lower plastic part, the lower plastic part includes a main body and an abutting portion, the abutting portion is used to abut the battery cell, the abutting portion protrudes from the main body toward the battery cell, and the abutting portion has a first extension section and a second extension section, the first extension section extends along the width direction of the main body, and the second extension section is arranged along the length direction of the main body, the first extension section and the second extension section are connected, and the edges of the first extension section and the second extension section facing the battery cell are both provided with anti-scratch chamfers.

[0008] Preferably, the anti-scratch chamfer includes a three-sided chamfer, the second extension section has a first surface, a second surface and a third surface, the first surface, the second surface and the third surface are perpendicular to each other, the third surface is parallel to the main body, the first surface is arranged toward the inner side of the main body, and the three-sided chamfer is provided at the connection between the first surface, the second surface and the third surface.

[0009] As preferably, the anti-scratching chamfer further comprises a first two-face chamfer, the first two-face chamfer is formed between the first face and the second face, and the junction between the first face, the second face and the third face is provided with the three-face chamfer, and the first two-face chamfer and the three-face chamfer are connected.

[0010] As preferably, the anti-scratching chamfer further comprises a second two-face chamfer, the second two-face chamfer is formed between the second face and the third face, and the second two-face chamfer and the three-face chamfer are connected.

[0011] As preferably, the anti-scratching chamfer further comprises a third two-face chamfer, the third two-face chamfer is formed between the first face and the third face, and the third two-face chamfer and the three-face chamfer are connected.

[0012] As preferably, the anti-scratching chamfer further comprises a fourth two-face chamfer, the first extending section comprises a fourth face and a fifth face connected, the fourth face is parallel to the body part, the fifth face is perpendicular to the body part and is arranged towards the inner side of the body part, and the fourth face and the fifth face are connected to form the fourth two-face chamfer.

[0013] As preferably, the third two-face chamfer is connected between the fourth two-face chamfer and the three-face chamfer.

[0014] As preferably, the anti-scratching chamfer is a round chamfer structure.

[0015] As preferably, the three-face chamfer is a flat chamfer structure, and the first two-face chamfer, the second two-face chamfer, the third two-face chamfer and the fourth two-face chamfer are all round chamfer structures.

[0016] The lower plastic part provided by the utility model has the following beneficial effects:

[0017] By arranging the anti-scratching chamfer, the sharp corner towards the battery cell on the lower plastic part is avoided, and the phenomenon of scratching the battery cell during assembly is greatly avoided, so that the battery cell is protected, and the yield of production is ensured.

[0018] Another object of the utility model is to provide a battery with better use performance and higher yield.

[0019] To achieve the object, the utility model adopts the following technical scheme:

[0020] The battery comprises a shell, a battery cell and a top cover assembly, the battery cell is accommodated in the shell, the top cover assembly is capable of being sealed at an opening of the shell to seal the shell, and the top cover assembly comprises the lower plastic part, and the abutting portion of the lower plastic part is capable of abutting and fixing the battery cell.

[0021] The battery provided by the utility model has the advantages of:

[0022] The sharp corner facing the battery cell is avoided on the lower plastic part, the phenomenon of scratching the battery cell during assembly is greatly avoided, the battery cell is protected, and the yield of production is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective view of the top cover assembly provided by the utility model;

[0024] Figure 2 is Figure 1 the partial enlarged view of A in FIG.

[0025] In the drawings:

[0026] 1, abutting portion; 11, first extension section; 111, fourth surface; 112, fifth surface; 12, second extension section; 121, first surface; 122, second surface; 123, third surface; 100, three-face chamfer; 101, first two-face chamfer; 102, second two-face chamfer; 103, third two-face chamfer; 104, fourth two-face chamfer;

[0027] 2, body portion. DETAILED DESCRIPTION

[0028] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature horizontal height is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that first feature horizontal height is less than second feature.

[0031] In the description of the embodiment, the terms "upper", "lower", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0032] The following will be described according to the accompanying Figure 1 to the accompanying Figure 2 The utility model provides a lower plastic part and battery.

[0033] As Figure 1 As shown in the utility model relates to a lower plastic part, its structure mainly includes two parts of body part 2 and abutment part 1. Body part 2 as the basis of lower plastic part, undertakes the support and fixed effect, ensures the stability and durability of lower plastic part in the battery structure. And abutment part 1, it is the focus of the utility model design, it is specially used for closely contacting with the battery cell, to realize the effective support and protection of the battery cell. Abutment part 1 protrudes from body part 2 towards the battery cell direction, such design not only increases the contact area with the battery cell, improves the support effect, but also realizes the all-round protection of the battery cell through specific extension section structure.

[0034] Specifically, abutment part 1 includes first extension section 11 and second extension section 12. First extension section 11 extends along the width direction of body part 2, this design helps to evenly distribute pressure in the width direction, reduces the deformation of the battery cell due to external force. Second extension section 12 is arranged along the length direction of body part 2, is closely connected with first extension section 11, forms a stable abutment frame. Such design not only enhances the overall strength of the lower plastic part, but also ensures that the battery cell can effectively resist deformation and protect the battery cell from damage when subjected to external impact through the joint action of the two extension sections.

[0035] In view of the scratch problem that may occur in the battery assembly process, the utility model discloses the edge of the abutment 1, that is, the edge of the first extension section 11 and the second extension section 12 towards the battery cell are all provided with scratchproof chamfer.This design detail, although seemingly simple, but actually has important significance for improving the safety and yield of the battery.In the assembly process of the battery, due to improper operation or slight difference between parts, the sharp corner of the lower plastic part is prone to scratch the battery cell, thereby affecting the overall performance and service life of the battery.Specifically, the abutment 1 has the first extension section 11 and the second extension section 12, the first extension section 11 is arranged along the width direction of the body part 2, the second extension section 12 is arranged along the length direction of the body part 2, the first extension section 11 and the second extension section 12 are connected and arranged, and the edge of the first extension section 11 and the second extension section 12 towards the battery cell are all provided with scratchproof chamfer.

[0036] By setting the scratchproof chamfer, the sharp corner towards the battery cell on the existing lower plastic part is avoided, which can greatly avoid the scratch phenomenon on the battery cell during the assembly process, thereby protecting the battery cell and ensuring the yield of production.Meanwhile, in the use process, the scratch caused by the shaking of the battery cell can also be avoided, thereby ensuring the safety and use performance of the battery.

[0037] Preferably, as shown in the embodiment, the second extension section 12 has a first face 121, a second face 122 and a third face 123, the first face 121, the second face 122 and the third face 123 are perpendicular to each other, the third face 123 is parallel to the body part 2, and the first face 121 is arranged towards the inner side of the body part 2. Figure 2 In the existing battery manufacturing technology, the connection between the faces is often prominently arranged due to improper design, becoming a potential scratch source.When the battery is in the assembly process, these prominent connections are prone to knock and rub with the aluminum plastic film on the surface of the battery cell, causing the aluminum plastic film to break or split, thereby causing damage to the battery cell, and even causing the battery cell to be punctured.This not only affects the performance and service life of the battery, but also may cause safety hazards.

[0038] The connection between the first face 121, the second face 122 and the third face 123 is provided with a three-face chamfer 100.In the prior art, the connection between the first face 121, the second face 122 and the third face 123 is prominently protruding, and is prone to knock and rub with the aluminum plastic film on the surface of the battery cell during the assembly process.Furthermore, the connection between the first face 121, the second face 122 and the third face 123 is prone to form a sharp corner or a sharp edge, and once it knocks and rubs with the aluminum plastic film on the surface of the battery cell, it is prone to cause the aluminum plastic film to break or split, thereby causing the battery cell to be damaged, and even causing the battery cell to be punctured, which has great safety risks.

[0039] Therefore, as shown in the embodiment, the first face 121, the second face 122 and the third face 123 are all provided with a three-face chamfer 100. Figure 2As shown, the three-side chamfer 100 is arranged in a round chamfer structure or a flat chamfer structure, so as to reduce the protrusion of the connection between the first face 121, the second face 122 and the third face 123 from the body part 2, and reduce the damage to the battery cell when the battery cell is rubbed or collided, so as to have a better avoiding effect and protection effect, and significantly improve the yield of the battery during the assembly process and the safety of the battery during use.

[0040] More specifically, as shown in Figure 2 The scratch-proof chamfer further includes a first two-side chamfer 101, which is formed between the first face 121 and the second face 122, and the connection between the first face 121, the second face 122 and the third face 123 is provided with the three-side chamfer 100, and the first two-side chamfer 101 is connected with the three-side chamfer 100. The first two-side chamfer 101 is arranged between the three-side chamfer 100 and the body part 2, and cooperates with the three-side chamfer 100 to completely eliminate the sharp edges between the first face 121 and the second face 122, so as to further improve the protection effect of the battery cell and avoid scratching the battery cell.

[0041] Similarly, as shown in Figure 2 The scratch-proof chamfer further includes a second two-side chamfer 102, which is formed between the second face 122 and the third face 123, and the second two-side chamfer 102 is connected with the three-side chamfer 100, so as to further eliminate the sharp edges between the second face 122 and the third face 123, and improve the protection effect of the battery cell and avoid scratching the battery cell.

[0042] Further, as shown in Figure 2 The scratch-proof chamfer further includes a third two-side chamfer 103, which is formed between the first face 121 and the third face 123, and the third two-side chamfer 103 is connected with the three-side chamfer 100, so as to further eliminate the sharp edges between the first face 121 and the third face 123, and improve the protection effect of the battery cell and avoid scratching the battery cell.

[0043] Continuing to refer to Figure 2 The scratch-proof chamfer further includes a fourth two-side chamfer 104, and the first extension section 11 includes a fourth face 111 and a fifth face 112 connected with each other, the fourth face 111 is arranged parallel to the body part 2, and the fifth face 112 is arranged perpendicular to the body part 2 and towards the inner side of the body part 2. The connection position of the fourth face 111 and the fifth face 112 is formed with the fourth two-side chamfer 104, so as to make the first extension section 11 have sharp edges on the side towards the battery cell.

[0044] Preferably, the third two-side chamfer 103 is connected between the fourth two-side chamfer 104 and the three-side chamfer 100, so that among the face-to-face connecting edges of the first extension section 11 and the second extension section 12, the connecting edges towards the battery cell are all provided with the above-mentioned scratch-preventing chamfer, thereby achieving comprehensive protection effect and fully avoiding scratching and scuffing.

[0045] It should be noted that in the present embodiment, the provided scratch-preventing chamfers all adopt a round chamfer structure, so that even if collision and friction with the battery cell occurs, the friction is performed through an arc surface or a plane, which not only disperses the impact force during collision through the arc surface to reduce damage to the battery cell, but also reduces wear during friction, thereby achieving more optimal protection and scratch-preventing and scuffing-preventing effect.

[0046] Of course, in some other embodiments, the three-side chamfer 100 can also be made into a flat chamfer structure, and the first two-side chamfer 101, the second two-side chamfer 102, the third two-side chamfer 103 and the fourth two-side chamfer 104 are all round chamfer structures. Such structure is provided to further reduce the protruding degree of the connecting part of the first face 121, the second face 122 and the third face 123, and compared with the round chamfer structure, it can further reduce the possibility of collision.

[0047] The utility model also provides a kind of battery, and the battery includes shell, battery cell and top cover assembly. Battery cell is housed in shell, and top cover assembly can be sealed and set at the opening of shell to seal shell. Top cover assembly includes the lower plastic piece described above, and the abutting portion 1 of lower plastic piece can be butted to battery cell, to limit, fixed effect to battery cell.

[0048] By setting the above-mentioned scratch-preventing chamfer, the sharp corner towards the battery cell on the existing lower plastic piece is avoided, which can greatly avoid the phenomenon of scratching the battery cell during assembly, thereby protecting the battery cell and ensuring the yield of production. At the same time, during use, it can also avoid scratching caused by battery cell shaking, thereby ensuring the safety and use performance of the battery.

[0049] Obviously, the above-mentioned embodiments of the utility model are only examples for clear illustration of the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to exhaust all embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A lower plastic part, characterized in that, The lower plastic part comprises a body portion (2) and an abutting portion (1) for abutting against the battery cell, the abutting portion (1) is protrudingly arranged from the body portion (2) towards the battery cell, and the abutting portion (1) has a first extending section (11) and a second extending section (12), the first extending section (11) is arranged along the width direction of the body portion (2), the second extending section (12) is arranged along the length direction of the body portion (2), the first extending section (11) and the second extending section (12) are connected and arranged, and the first extending section (11) and the second extending section (12) are both provided with a scratch-proof chamfer at the edge towards the battery cell.

2. The lower plastic part according to claim 1, characterized in that, the scratch-proof chamfer comprises a three-face chamfer (100), the second extending section (12) has a first face (121), a second face (122) and a third face (123), the first face (121), the second face (122) and the third face (123) are perpendicular to each other, the third face (123) is parallel to the body portion (2), the first face (121) is arranged towards the inner side of the body portion (2), and the connection between the first face (121), the second face (122) and the third face (123) is provided with the three-face chamfer (100).

3. The lower plastic part according to claim 2, characterized in that, the scratch-proof chamfer further comprises a first two-face chamfer (101), the first two-face chamfer (101) is formed between the first face (121) and the second face (122), the connection between the first face (121), the second face (122) and the third face (123) is provided with the three-face chamfer (100), and the first two-face chamfer (101) and the three-face chamfer (100) are connected and arranged.

4. The lower plastic part according to claim 3, characterized in that, the scratch-proof chamfer further comprises a second two-face chamfer (102), the second two-face chamfer (102) is formed between the second face (122) and the third face (123), and the second two-face chamfer (102) and the three-face chamfer (100) are connected and arranged.

5. The lower plastic part according to claim 4, characterized in that, the scratch-proof chamfer further comprises a third two-face chamfer (103), the third two-face chamfer (103) is formed between the first face (121) and the third face (123), and the third two-face chamfer (103) and the three-face chamfer (100) are connected and arranged.

6. The lower plastic part according to claim 5, characterized in that, The anti-scratching chamfer further comprises a fourth two-sided chamfer (104), the first extension section (11) comprises a fourth side (111) and a fifth side (112) connected to each other, the fourth side (111) is arranged parallel to the body part (2), the fifth side (112) is arranged perpendicular to the body part (2) and is arranged towards the inner side of the body part (2), and the connection position of the fourth side (111) and the fifth side (112) forms the fourth two-sided chamfer (104).

7. The lower plastic part of claim 6, wherein, The third two-sided chamfer (103) is connected between the fourth two-sided chamfer (104) and the three-sided chamfer (100).

8. The lower plastic part of claim 7, wherein, The anti-scratching chamfers are all round chamfer structures.

9. The lower plastic part of claim 7, wherein, The three-sided chamfer (100) is a flat chamfer structure, and the first two-sided chamfer (101), the second two-sided chamfer (102), the third two-sided chamfer (103) and the fourth two-sided chamfer (104) are all round chamfer structures.

10. A battery characterized by The battery cell comprises a shell, an electric core and a top cover assembly, the electric core is contained in the shell, the top cover assembly can be sealed and arranged at the opening of the shell to seal the shell, and the top cover assembly comprises the lower plastic part as claimed in any one of claims 1-9, and the abutting part (1) of the lower plastic part can abut and fix the electric core.

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