Battery cover plate assembly and battery
By designing limiting grooves and protruding structures on the upper plastic of the battery cover assembly, the problem of riveted block deviation is solved, and the symmetry is improved and the quality is guaranteed.
Patent Information
- Application Number
- CN202422310644.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-09-23
AI Technical Summary
During the assembly process of the battery cover assembly, the rivet block and the upper plastic are prone to misalignment, resulting in symmetry that does not meet quality requirements.
A battery cover assembly is designed, in which the upper plastic has a limiting groove, and the side wall of the limiting groove has at least four evenly distributed limiting protrusions with consistent heights, which are used to limit the deviation of the riveted block and improve symmetry.
The limiting protrusion structure effectively avoids the deviation of the riveting block and the upper plastic, ensuring that the symmetry and quality of the battery cover assembly meet the requirements.
Smart Images
Figure CN223401753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy storage equipment, in particular to a battery cover assembly and a battery. Background Art
[0002] A plastic cover is typically placed between the rivet block and the cover plate of a battery cover assembly to ensure insulation between the two. The plastic cover wraps around the sides of the rivet block, typically leaving a clearance between the sidewalls of the rivet block and the inner sidewalls of the plastic cover. However, during assembly, the plastic cover and the rivet block can easily become misaligned, resulting in symmetry that doesn't meet quality requirements. Utility Model Content
[0003] One purpose of the present utility model is to provide a battery cover assembly that can help avoid deviation, ensure the symmetry of the upper plastic relative to the riveted block, and ensure that the quality meets the requirements.
[0004] To achieve this purpose, the present invention adopts the following technical solutions:
[0005] A battery cover assembly is provided, comprising a rivet block and an upper plastic, wherein the upper plastic has a limiting groove, the rivet block is located in the limiting groove, and the side wall of the limiting groove has at least four limiting protrusions, the at least four limiting protrusions are evenly spaced along the circumference of the limiting groove, and the protrusion heights of the at least four limiting protrusions are consistent.
[0006] Optionally, each of the limiting protrusions includes a first inclined surface and a second inclined surface connected to each other, the first inclined surface is arranged toward the outside of the battery, the second inclined surface is arranged toward the inside of the battery, and the second inclined surface is closer to the inside of the battery than the first inclined surface.
[0007] Optionally, the included angle between the first inclined surface and the second inclined surface is an obtuse angle.
[0008] Optionally, the included angle between the first inclined surface and the side wall of the limiting groove is greater than the included angle between the second inclined surface and the side wall of the limiting groove.
[0009] Optionally, there is a curved transition between the first inclined surface and the second inclined surface.
[0010] Optionally, the vertical distance between the inner side wall of the limiting groove where the limiting protrusion is not provided and the side wall of the riveting block is a, the protruding height of the limiting protrusion is b, and the value range of b / a is 40%-90%.
[0011] Optionally, a vertical distance a between an inner side wall of the limiting groove where the limiting protrusion is not provided and a side wall of the riveting block is 0.05 mm ≤ a ≤ 0.1 mm.
[0012] Optionally, the riveting block has four side walls, the side wall of the limiting groove has four limiting protrusions, and each limiting protrusion corresponds to the side wall of the riveting block on one side.
[0013] Optionally, it further includes a pole and a cover plate, the upper plastic is clamped between the cover plate and the riveted block, the pole is sequentially passed through the through hole of the cover plate, the through hole of the upper plastic and the through hole of the riveted block, and the end of the pole is riveted to the riveted block.
[0014] Another object of the present invention is to provide a battery that can help avoid the deviation phenomenon, ensure the symmetry of the upper plastic relative to the riveted block, and ensure that the quality meets the requirements.
[0015] To achieve this purpose, the present invention adopts the following technical solutions:
[0016] A battery is provided, comprising a shell and the above-mentioned battery cover assembly, wherein the cover of the battery cover assembly is arranged at the opening of the shell, and the cover is sealed and connected to the shell to form the outer shell of the battery.
[0017] Beneficial effects of the utility model:
[0018] The utility model provides a battery cover assembly, including a rivet block and an upper plastic, the upper plastic having a limiting groove, the rivet block being located in the limiting groove, the side wall of the limiting groove having at least four limiting protrusions, the at least four limiting protrusions being evenly spaced along the circumference of the limiting groove, the protrusion heights of the at least four limiting protrusions being consistent, the limiting protrusions being able to limit the deviation between the rivet block and the upper plastic, thereby improving the symmetry of the upper plastic relative to the rivet block, and ensuring that the battery quality meets the requirements.
[0019] The utility model also provides a battery comprising a housing and the aforementioned battery cover assembly, wherein the cover of the battery cover assembly is positioned over the opening of the housing and is sealed to the housing to form the battery housing. This battery can help prevent misalignment, ensure symmetry between the upper plastic and the riveted block, and guarantee quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic structural diagram of a battery cover assembly provided by an embodiment of the present utility model;
[0021] Figure 2 This is a partial exploded view of the battery cover assembly provided by an embodiment of the present utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the upper plastic provided by an embodiment of the utility model;
[0023] Figure 4 It is a partial cross-sectional view of the battery cover assembly provided by an embodiment of the present utility model.
[0024] In the picture:
[0025] 1. Riveting block; 2. Plastic top; 21. Position limiting groove; 22. Position limiting protrusion; 221. First inclined surface; 222. Second inclined surface;
[0026] 3. Pole; 4. Cover; 5. Sealing ring; 6. Lower plastic; 700. Reserve gap on one side. DETAILED DESCRIPTION
[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention, and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.
[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0030] A plastic cover is typically placed between the rivet block and the cover plate of a battery cover assembly to ensure insulation between the two. The plastic cover wraps around the sides of the rivet block, typically leaving a clearance between the sidewalls of the rivet block and the inner sidewalls of the plastic cover. However, during assembly, the plastic cover and the rivet block can easily become misaligned, resulting in symmetry that doesn't meet quality requirements.
[0031] like Figures 1-4 As shown, the battery cover assembly of this embodiment includes a rivet block 1 and an upper plastic 2, the upper plastic 2 has a limiting groove 21, the rivet block 1 is located in the limiting groove 21, the side wall of the limiting groove 21 has at least four limiting protrusions 22, at least four limiting protrusions 22 are evenly arranged along the circumference of the limiting groove 21, and the protrusion heights of at least four limiting protrusions 22 are consistent. The limiting protrusions 22 can limit the deviation of the rivet block 1, improve the symmetry of the upper plastic 2 relative to the rivet block 1, and ensure that the battery quality meets the requirements.
[0032] Optionally, in this embodiment, the rivet block 1 has four sidewalls, and the sidewalls of the retaining groove 21 have four retaining protrusions 22, each retaining protrusion 22 corresponding to a sidewall of the rivet block 1. Optionally, the rivet block 1 is rectangular, and the retaining groove 21 is also configured as a rectangular groove. The four retaining protrusions 22 are respectively provided on the four sidewalls surrounding the rectangular groove to ensure that the rivet block 1 is retained within the center area of the rectangular groove. Of course, in other embodiments, the rivet block 1 and the retaining groove 21 can also be configured as other shapes, which are not limited here.
[0033] Optionally, the protruding end surface of each limiting protrusion 22 extends in a direction parallel to the surface of the cover plate 4 to ensure that the protruding end surface has a certain area and a certain degree of extrusion resistance.
[0034] Optionally, each limiting protrusion 22 includes a first inclined surface 221 and a second inclined surface 222 connected to each other, with the first inclined surface 221 facing the outside of the battery and the second inclined surface 222 facing the inside of the battery, and the second inclined surface 222 being closer to the inside of the battery than the first inclined surface 221. That is, the base of the limiting protrusion 22 is wider and the end of the protrusion is narrower, thereby ensuring the structural strength of the limiting protrusion 22 itself and ensuring that it is not easily broken from the inner wall of the limiting groove 21 even under long-term stress.
[0035] Optionally, the included angle between the first inclined surface 221 and the second inclined surface 222 is an obtuse angle, which further ensures that the root of the limiting protrusion 22 is wider than the end and is not easy to break.
[0036] Optionally, the angle between the first inclined surface 221 and the side wall of the limiting groove 21 is greater than the angle between the second inclined surface 222 and the side wall of the limiting groove 21, that is, the protruding end of the limiting protrusion 22 is close to the inside of the battery.
[0037] Optionally, a curved surface transition is formed between the first inclined surface 221 and the second inclined surface 222 to prevent scratching of the riveting block 1. Optionally, the first inclined surface 221 is a plane, and the second inclined surface 222 is a curved surface.
[0038] Optionally, the vertical distance between the inner side wall of the limiting groove 21 where the limiting protrusion 22 is not provided and the side wall of the riveting block 1 is a, that is, the width of the single-sided reserved gap 700 is a, and the protruding height of the limiting protrusion 22 is b, satisfying the value range of b / a is 40%-90%. If the ratio is too low, the limiting effect of the limiting protrusion 22 on the riveting block 1 cannot be guaranteed, and if the ratio is too high, it may cause difficulty in assembling the riveting block 1 and the upper plastic 2.
[0039] Optionally, the vertical distance between the inner side wall of the limiting groove 21 where the limiting protrusion 22 is not provided and the side wall of the riveting block 1 is a, 0.05mm≤a≤0.1mm, that is, the width of the single-sided reserved gap 700 ranges from 0.05mm to 0.1mm.
[0040] Optionally, the battery cover assembly also includes a pole 3 and a cover 4, the upper plastic 2 is clamped between the cover 4 and the riveted block 1, the pole 3 is sequentially passed through the through hole of the cover 4, the through hole of the upper plastic 2 and the through hole of the riveted block 1, and the end of the pole 3 is riveted to the riveted block 1, and the connecting part of the pole 3 is located on the side of the cover 4 facing the interior of the battery.
[0041] Optionally, the battery cover assembly further includes a sealing ring 5 and a lower plastic 6, the sealing ring 5 is sleeved on the pole 3, the lower plastic 6 is attached to the side of the cover 4 facing the interior of the battery, the lower plastic 6 is partially clamped between the connecting portion and the cover 4, the sealing ring 5 is partially clamped between the pole 3 and the inner wall of the through hole of the cover 4, and partially clamped between the pole 3 and the inner wall of the through hole of the lower plastic 6 to ensure sealing and insulation.
[0042] This embodiment also provides a battery comprising a housing and the aforementioned battery cover assembly. The cover 4 of the battery cover assembly is positioned over the opening of the housing and is sealed to the housing to form the battery housing. This battery can help prevent misalignment, ensure symmetry between the upper plastic 2 and the rivet block 1, and guarantee quality.
[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. Battery cover assembly, characterized in that: The invention comprises a riveting block (1) and an upper plastic (2), wherein the upper plastic (2) has a limiting groove (21), the riveting block (1) is located in the limiting groove (21), the side wall of the limiting groove (21) has at least four limiting protrusions (22), the at least four limiting protrusions (22) are evenly spaced along the circumference of the limiting groove (21), and the protrusion heights of the at least four limiting protrusions (22) are consistent.
2. The battery cover assembly according to claim 1, characterized in that: Each of the limiting protrusions (22) comprises a first inclined surface (221) and a second inclined surface (222) connected to each other, wherein the first inclined surface (221) is arranged toward the outside of the battery, and the second inclined surface (222) is arranged toward the inside of the battery, and the second inclined surface (222) is closer to the inside of the battery than the first inclined surface (221).
3. The battery cover assembly according to claim 2, characterized in that: The included angle between the first inclined surface (221) and the second inclined surface (222) is an obtuse angle.
4. The battery cover assembly according to claim 2, characterized in that: The included angle between the first inclined surface (221) and the side wall of the limiting groove (21) is greater than the included angle between the second inclined surface (222) and the side wall of the limiting groove (21).
5. The battery cover assembly according to claim 2, characterized in that: There is a curved surface transition between the first inclined surface (221) and the second inclined surface (222).
6. The battery cover assembly according to any one of claims 1 to 5, characterized in that: The vertical distance between the inner side wall of the limiting groove (21) where the limiting protrusion (22) is not provided and the side wall of the riveting block (1) is a, and the protruding height of the limiting protrusion (22) is b, and the value range of b / a is 40%-90%.
7. The battery cover assembly according to any one of claims 1 to 5, characterized in that: The vertical distance between the inner side wall of the limiting groove (21) where the limiting protrusion (22) is not provided and the side wall of the riveting block (1) is a, 0.05mm≤a≤0.1mm.
8. The battery cover assembly according to any one of claims 1 to 5, characterized in that: The riveting block (1) has four side walls, and the side wall of the limiting groove (21) has four limiting protrusions (22), and each limiting protrusion (22) corresponds to a side wall of the riveting block (1) on one side.
9. The battery cover assembly according to any one of claims 1 to 5, characterized in that: It also includes a pole (3) and a cover plate (4), the upper plastic (2) is sandwiched between the cover plate (4) and the riveted block (1), the pole (3) is sequentially passed through the through hole of the cover plate (4), the through hole of the upper plastic (2) and the through hole of the riveted block (1), and the end of the pole (3) is riveted to the riveted block (1).
10. A battery, characterized in that The battery cover assembly comprises a shell and a battery cover assembly as claimed in any one of claims 1 to 9, wherein the cover (4) of the battery cover assembly is arranged at the opening of the shell, and the cover (4) is sealed to the shell to form the outer shell of the battery.