Battery cover plate and battery monomer
By setting a boss structure on the edge of the mounting hole of the battery cover and enhancing the covering area of the plastic part, the problems of unstable connection and poor sealing between the battery cover and the pole are solved, and stable connection and sealing are guaranteed in high temperature environment.
Patent Information
- Application Number
- CN202422372108.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The connection stability and sealing between the battery cover body and the pole are poor, and the pole is prone to sinking, especially in high temperature environments.
A first boss and a second boss are provided on the edge of the mounting hole of the cover body. The first boss and the second boss extend circumferentially along the mounting hole and are connected end to end. The pole is passed through the mounting hole. The plastic part is covered on the outer circumference of the pole and embedded in the boss, thereby increasing the covering area of the plastic part to improve the clamping force.
The connection stability and anti-sway ability between the pole and the cover body are improved, the probability of the pole sinking in a high temperature environment is reduced, the sealing is enhanced, and the yield rate of the battery cover is improved.
Smart Images
Figure CN223401734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery cover and a battery monomer. Background Art
[0002] The battery cover usually includes a cover body, a pole and an upper plastic. The cover body is provided with a through-hole, the pole is passed through the through-hole, and the upper plastic is covered on the side wall of the pole and the edge of the through-hole to achieve an insulated connection between the pole and the cover body.
[0003] Since the area of the cover body covered by the upper plastic is limited, the clamping force of the upper plastic on the cover body is low, which in turn makes the connection between the pole and the cover body less stable, and the pole is prone to shaking on the cover body. Moreover, in a high temperature environment, due to the low clamping force of the upper plastic on the cover body, the pole is more likely to sink, thereby affecting the sealing between the pole and the cover body.
[0004] Therefore, it is urgent to propose a battery cover and a battery cell to solve the above technical problems. Utility Model Content
[0005] The first object of the present utility model is to provide a battery cover that can improve the wrapping force of the plastic part on the cover body.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] Battery cover, including:
[0008] The cover body is provided with a mounting hole and a first boss, the first boss is located at the edge of the mounting hole, a second boss is provided on the side of the first boss facing away from the cover body, and the first boss and the second boss both extend along the circumference of the mounting hole and are connected end to end;
[0009] The pole comprises a column body, and the column body is passed through the mounting hole;
[0010] The plastic part partially covers the outer periphery of the column, and partially covers the edge of the mounting hole on the side of the cover body where the first boss is provided. The first boss and the second boss are both embedded in the plastic part.
[0011] Optionally, the first boss includes at least three first straight line segments, which are arranged around the axis of the mounting hole and are connected end to end in sequence; the second boss includes at least three second straight line segments, which are arranged around the axis of the mounting hole and are connected end to end in sequence.
[0012] Optionally, each two adjacent first straight line segments are transitioned through a first rounded corner; each two adjacent second straight line segments are transitioned through a second rounded corner.
[0013] Optionally, the number of the first straight line segments and the number of the second straight line segments are both four.
[0014] Optionally, the height of the second boss is 0.15 mm-0.45 mm.
[0015] Optionally, a groove is provided on the side wall of the column, the groove extends along the circumference of the column and is connected end to end, and part of the plastic part is embedded in the groove.
[0016] Optionally, one of the plastic part embedded in the groove and the groove bottom of the groove is provided with a recessed portion, and the other is provided with a protruding portion, and the protruding portion is embedded in the recessed portion.
[0017] Optionally, the recessed portion is located at the bottom of the groove, and the protruding portion is located on a plastic part embedded in the groove.
[0018] Optionally, a chamfer transition is formed between the edge of the mounting hole facing the plastic component and the hole wall of the mounting hole, and a portion of the plastic component is wrapped around the chamfer.
[0019] A second object of the present invention is to provide a battery cell having a high yield rate.
[0020] To achieve this purpose, the present invention adopts the following technical solutions:
[0021] The battery cell comprises a pole core, a shell and the above-mentioned battery cover plate. The pole core is arranged in the shell, and the cover plate body is covered at the opening of the shell.
[0022] Beneficial effects of the utility model:
[0023] The cover body is provided with a first boss at the edge of the mounting hole, and a second boss is provided on the side of the first boss facing away from the cover body. The first boss and the second boss both extend along the circumference of the mounting hole and are connected end to end. The column is passed through the mounting hole, and part of the plastic part is covered on the outer periphery of the column, and part of the plastic part is located on the side of the cover body provided with the first boss and covers the edge of the mounting hole, so that the column and the cover body are connected through the plastic part. The first boss and the second boss are both embedded in the plastic part. The setting of the first boss and the second boss increases the area of the plastic part covered on the cover body, thereby increasing the clamping force of the plastic part covered on the cover body, which has the effect of improving the connection stability between the column and the cover body, thereby reducing the chance of the pole shaking on the cover body, and also reducing the chance of the pole sinking in a high temperature environment, providing a strong guarantee for the sealing between the pole and the cover body. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a structural diagram of the battery cover provided by the utility model;
[0025] Figure 2 This is a structural diagram of the cover body provided by the utility model;
[0026] Figure 3 This is a partial enlarged structural diagram of the cover body provided by the utility model;
[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the battery cover provided by the present utility model;
[0028] Figure 5 yes Figure 4 A local enlarged view of point A;
[0029] Figure 6 This is a schematic diagram of the structure of the pole provided by the utility model;
[0030] Figure 7 It is a structural diagram of the plastic part provided by the utility model.
[0031] In the picture:
[0032] 100. Cover body; 110. Mounting hole; 111. Chamfer; 120. First boss; 121. First straight segment; 122. First fillet; 130. Second boss; 131. Second straight segment; 132. Second fillet; 200. Pole; 210. Column; 211. Groove; 212. Recess; 220. Base; 300. Plastic part; 310. Protrusion; 410. First sealing section; 420. Second sealing section. DETAILED DESCRIPTION
[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate 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 its components.
[0034] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction 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.
[0035] 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.
[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0037] This embodiment provides a battery cover, which can improve the wrapping force of the plastic part on the cover body.
[0038] Specifically, if Figures 1 to 5 As shown, the battery cover includes a cover body 100, a pole 200 and a plastic part 300, wherein the cover body 100 is provided with a mounting hole 110 and a first boss 120, the first boss 120 is located at the edge of the mounting hole 110, and the first boss 120 is provided with a second boss 130 on the side away from the cover body 100, the first boss 120 and the second boss 130 both extend along the circumference of the mounting hole 110 and are connected end to end, the pole 200 includes a column 210, the column 210 is passed through the mounting hole 110, part of the plastic part 300 is covered on the outer periphery of the column 210, part of the plastic part 300 is located on the side of the cover body 100 where the first boss 120 is provided and covered on the edge of the mounting hole 110, and the first boss 120 and the second boss 130 are both embedded in the plastic part 300.
[0039] Based on the above design, the cover body 100 is provided with a first boss 120 on the edge of the mounting hole 110, and the first boss 120 is provided with a second boss 130 on the side away from the cover body 100. The first boss 120 and the second boss 130 both extend along the circumference of the mounting hole 110 and are connected end to end. The column 210 is passed through the mounting hole 110, and part of the plastic part 300 is covered on the outer periphery of the column 210. Part of the plastic part 300 is located on the side of the cover body 100 where the first boss 120 is provided and covered on the edge of the mounting hole 110, so that the column 210 is connected to the cover body 100 through the plastic part 300. The first boss 120 and The second bosses 130 are both embedded in the plastic part 300. The arrangement of the first boss 120 and the second boss 130 increases the area of the plastic part 300 wrapped around the cover body 100, thereby increasing the clamping force of the plastic part 300 wrapped around the cover body 100, thereby improving the connection stability between the column 210 and the cover body 100, and improving the push-pull and torsion resistance of the pole 200, that is, reducing the probability of the pole 200 shaking on the cover body 100, and also reducing the probability of the pole 200 sinking in a high temperature environment, providing a strong guarantee for the sealing between the pole 200 and the cover body 100.
[0040] Alternatively, as Figures 1 to 5 As shown, the first boss 120 includes at least three first straight segments 121, which are arranged around the axis of the mounting hole 110 and are connected end to end in sequence; the second boss 130 includes at least three second straight segments 131, which are arranged around the axis of the mounting hole 110 and are connected end to end in sequence, thereby preventing the plastic part 300 from rotating relative to the cover body 100, thereby improving the anti-rotation effect between the pole 200 and the cover body 100.
[0041] Furthermore, if Figures 1 to 5 As shown, the number of first straight segments 121 and second straight segments 131 are both four, making the first boss 120 and the second boss 130 approximately square in structure. This improves the reliability of the anti-rotation effect between the plastic component 300 and the cover body 100, thereby improving the anti-rotation effect between the terminal 200 and the cover body 100. Of course, in other embodiments, the number of first straight segments 121 can also be three, five, or six, and the number of second straight segments 131 can also be three, five, or six, etc.
[0042] Furthermore, if Figures 1 to 5As shown, each adjacent two first straight line segments 121 are transitioned through a first rounded corner 122 to avoid cutting the plastic part 300 in the area where the two adjacent first straight line segments 121 intersect, and each adjacent two second straight line segments 131 are transitioned through a second rounded corner 132 to avoid cutting the plastic part 300 in the area where the two adjacent second straight line segments 131 intersect. The design of the first rounded corner 122 and the second rounded corner 132 prevents the plastic part 300 from being cut, thereby improving the reliability of the connection between the plastic part 300 and the cover body 100.
[0043] Furthermore, if Figures 1 to 5 As shown, the second straight line segment 131 is located on the side of the first straight line segment 121 away from the cover body 100, and the number of the second straight line segments 131 is equal to and one-to-one corresponds to the number of the first straight line segments 121. Therefore, the second rounded corners 132 are located on the side of the first rounded corners 122 away from the cover body 100, and the number of the second rounded corners 132 is equal to and one-to-one corresponds to the number of the first rounded corners 122. This structural design is conducive to simplifying the overall structure of the cover body 100, thereby simplifying the production process and reducing production costs.
[0044] Optionally, the height of the second boss 130 is 0.15 mm-0.45 mm. For example, the height of the second boss 130 can be 0.15 mm, 0.3 mm or 0.45 mm, etc., ensuring that the plastic part 300 covers the area on the second boss 130 while reducing the weight of the cover body 100.
[0045] Alternatively, as Figures 1 to 5 As shown, the edge of the mounting hole 110 facing the plastic part 300 and the hole wall of the mounting hole 110 are transitioned through a chamfer 111, and part of the plastic part 300 is covered on the chamfer 111. The design of the chamfer 111 can prevent the plastic part 300 located near the chamfer 111 from being cut, thereby improving the reliability of the connection between the plastic part 300 and the cover body 100.
[0046] Alternatively, as Figures 1 to 6 As shown, the side wall of the column 210 is provided with a groove 211, which extends along the circumference of the column 210 and is connected end to end. Part of the plastic part 300 is embedded in the groove 211 to expand the area of the plastic part 300 covering the column 210, thereby increasing the clamping force of the plastic part 300 covering the column 210, thereby achieving the effect of improving the stability of the connection between the plastic part 300 and the column 210.
[0047] Furthermore, one of the plastic part 300 embedded in the groove 211 and the bottom of the groove 211 is provided with a recessed portion 212, and the other is provided with a protruding portion 310, and the protruding portion 310 is embedded in the recessed portion 212, thereby preventing the column 210 from rotating relative to the plastic part 300, thereby improving the anti-rotation effect between the pole 200 and the plastic part 300.
[0048] Furthermore, if Figures 1 to 7 As shown, the recessed portion 212 is located at the bottom of the groove 211, and the protruding portion 310 is located on the plastic part 300 embedded in the groove 211. During actual processing, the recessed portion 212 can be directly processed at the bottom of the groove 211 of the column 210 by turning or stamping, so as to reduce production difficulty and improve production efficiency.
[0049] In another embodiment, the recessed portion 212 is located on the plastic part 300 embedded in the groove 211 , and the protruding portion 310 is located at the bottom of the groove 211 .
[0050] Furthermore, the recessed portion 212 may be a plane, a groove 211 or a pit or other structures. In this embodiment, the recessed portion 212 is a plane structure to further reduce the difficulty of production.
[0051] Alternatively, as Figures 1 to 7 As shown, the pole 200 further includes a base 220 , which is connected to the column 210 , and is located on a side of the cover body 100 facing away from the plastic component 300 .
[0052] The battery cover also includes a sealing ring, which includes a first sealing section 410 and a second sealing section 420 that are connected to each other. The first sealing section 410 and the second sealing section 420 are both sleeved on the column 210. The first sealing section 410 is clamped between the base 220 and the cover body 100, and the second sealing section 420 is clamped between the column 210 and the wall of the mounting hole 110 to achieve sealing between the pole 200 and the cover body 100.
[0053] like Figures 1 to 7 As shown, in this embodiment, the number of the poles 200 , the number of the mounting holes 110 and the plastic parts 300 are two and they correspond one to one. One of the two poles 200 is a positive pole and the other is a negative pole.
[0054] This embodiment also provides a battery cell, which includes a pole core, a shell and the above-mentioned battery cover. The pole core is arranged in the shell, and the cover body 100 is covered at the opening of the shell. The battery cell adopts the above-mentioned battery cover, and its pole 200 is connected to the cover body 100 through a plastic part 300. Since the plastic part 300 has a high clamping force on the cover body 100, the yield rate of the battery cover is high, thereby improving the yield rate of the battery cell.
[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments 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, characterized in that: include: A cover plate body (100), wherein the cover plate body (100) is provided with a mounting hole (110) and a first boss (120), wherein the first boss (120) is located at the edge of the mounting hole (110), and a second boss (130) is provided on a side of the first boss (120) facing away from the cover plate body (100), wherein the first boss (120) and the second boss (130) both extend along the circumference of the mounting hole (110) and are connected end to end; A pole (200), the pole (200) comprising a column (210), the column (210) being passed through the mounting hole (110); A plastic part (300), part of the plastic part (300) is wrapped around the outer periphery of the column (210), and part of the plastic part (300) is located on the side of the cover body (100) where the first boss (120) is provided and wrapped around the edge of the mounting hole (110), and the first boss (120) and the second boss (130) are both embedded in the plastic part (300).
2. The battery cover according to claim 1, characterized in that: The first boss (120) includes at least three first straight segments (121), and the at least three first straight segments (121) are arranged around the axis of the mounting hole (110) and are connected end to end in sequence; the second boss (130) includes at least three second straight segments (131), and the at least three second straight segments (131) are arranged around the axis of the mounting hole (110) and are connected end to end in sequence.
3. The battery cover according to claim 2, characterized in that: Each adjacent two first straight line segments (121) transitions through a first rounded corner (122); each adjacent two second straight line segments (131) transitions through a second rounded corner (132).
4. The battery cover according to claim 2, characterized in that: The number of the first straight line segments (121) and the number of the second straight line segments (131) are both four.
5. The battery cover according to any one of claims 1 to 4, characterized in that: The height of the second boss (130) is 0.15 mm to 0.45 mm.
6. The battery cover according to any one of claims 1 to 4, characterized in that: A groove (211) is provided on the side wall of the column (210), and the groove (211) extends along the circumference of the column (210) and is connected end to end, and a portion of the plastic part (300) is embedded in the groove (211).
7. The battery cover according to claim 6, characterized in that: One of the plastic part (300) embedded in the groove (211) and the bottom of the groove (211) is provided with a recessed portion (212), and the other is provided with a protruding portion (310), and the protruding portion (310) is embedded in the recessed portion (212).
8. The battery cover according to claim 7, characterized in that: The recessed portion (212) is located at the bottom of the groove (211), and the protruding portion (310) is located on the plastic part (300) embedded in the groove (211).
9. The battery cover according to any one of claims 1 to 4, characterized in that: A transition is formed between the edge of the mounting hole (110) facing the plastic part (300) and the hole wall of the mounting hole (110) via a chamfer (111), and a portion of the plastic part (300) is wrapped around the chamfer (111).
10. A battery cell, characterized in that The invention comprises a pole core, a shell and a battery cover according to any one of claims 1 to 9, wherein the pole core is arranged in the shell, and the cover body (100) is covered at the opening of the shell.