Battery top cover and battery
By using conductive terminals and plastic parts in the battery cover, and using sealing reinforcement ribs to seal the assembly gap, the problem of unqualified seal ring assembly is solved, and the simplified structure and airtightness of the battery cover are achieved, reducing production costs and improving safety.
Patent Information
- Application Number
- CN202422222148.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-11
AI Technical Summary
When the existing battery cover is assembled, the sealing ring is prone to twisting, flanging or inadequate sleeves, resulting in unqualified airtightness detection.
The design of conductive terminals and upper plastic parts is adopted, in which a sealed reinforcement strip is provided with a convex ring on the surface of the upper plastic parts. When the conductive terminal is installed, the upper plastic parts are crimped between the conductive terminals and the top cover plate, and the assembly gap is sealed by sealing reinforcement strips.
The structure of the battery ceiling is simplified, the sealing ring is eliminated, the production cost is reduced, and the airtightness between the conductive terminal and the ceiling plate is ensured, which improves the safety and reliability of the battery.
Smart Images
Figure CN223193882U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a battery top cover and a battery. Background Art
[0002] At present, the battery top cover includes a top cover plate, a pole installed on the top cover plate, and a lower plastic structure for separating the top cover plate and the single battery cell, wherein the lower plastic structure is installed at the bottom of the top cover plate, a through hole is provided on the top cover plate, the pole is installed in the through hole, and the pole and the top cover plate are sealed by a sealing ring to ensure that the airtightness of the battery top cover is qualified.
[0003] In the prior art, a sealing ring is often required to achieve a seal between the pole and the top cover. The upper plastic and the sealing ring in the existing battery top cover are in a separate state. Special tools are required to assemble the sealing ring on the pole. However, during the assembly process of the sealing ring, there are cases where the sealing ring is twisted, flanged, or not put into place, resulting in the battery top cover failing the air tightness test.
[0004] Based on the above, there is an urgent need for a battery top cover and a battery to solve the technical problems existing in the above-mentioned prior art. Utility Model Content
[0005] One purpose of the utility model is to provide a battery top cover, which is used to solve the technical problem that during the assembly process of the sealing ring of the existing battery top cover, the sealing ring is twisted, flanging or not put into place, thereby causing the battery top cover to fail the air tightness test.
[0006] To achieve this purpose, the present invention adopts the following technical solutions:
[0007] The battery top cover includes a top cover plate, an upper plastic part and a conductive terminal. The top cover plate is provided with a through hole, the conductive terminal is installed in the through hole, the upper plastic part is provided between the conductive terminal and the top cover plate, and the surface of the upper plastic part is provided with a sealing reinforcement rib in a ring-shaped protrusion. When the conductive terminal is installed on the through hole, the conductive terminal can press the upper plastic part between the conductive terminal and the top cover plate to seal the assembly gap between the conductive terminal and the top cover plate through the sealing reinforcement rib.
[0008] Preferably, the conductive terminal includes an insertion portion and a pressing ring portion connected in a T-shape, the insertion portion is inserted into the through hole, the pressing ring portion is connected to one end of the insertion portion and is crimped to the upper surface of the top cover plate;
[0009] The upper plastic part includes a first sealing portion and a second sealing portion connected in an L-shape, the first sealing portion being clamped between the insertion portion and the inner side wall of the through hole, the second sealing portion being clamped between the ring-pressing portion and the upper surface of the top cover plate, and the sealing reinforcement rib being provided on a ring convex portion of the second sealing portion.
[0010] Preferably, the sealing reinforcement rib is provided on a side of the first sealing portion facing the annular pressure portion.
[0011] Preferably, a first compression limit groove is provided on the annular pressure portion, and the first compression limit groove is arranged relative to the sealing reinforcement rib. The bottom of the first compression limit groove is pressed against the top of the sealing reinforcement rib, and the vertical cross-sectional area of the first compression limit groove is larger than the vertical cross-sectional area of the sealing reinforcement rib.
[0012] Preferably, the sealing reinforcement rib is provided in a circumferential manner on one side of the second sealing portion facing the upper surface of the top cover plate.
[0013] Preferably, a second compression limit groove is opened on the top cover plate, the bottom of the second compression limit groove is pressed against the bottom of the sealing reinforcement rib, the second compression limit groove is arranged relative to the sealing reinforcement rib, and the vertical cross-sectional area of the second compression limit groove is larger than the vertical cross-sectional area of the sealing reinforcement rib.
[0014] Preferably, the vertical cross-section of the sealing reinforcement rib is elliptical or semicircular.
[0015] Preferably, the vertical cross-section shape of the first compression limiting groove and the second compression limiting groove is a square shape.
[0016] Preferably, the conductive terminal includes a conductive electrode column and a pressure block, the conductive electrode column includes the insertion portion and the ring pressure portion, the pressure block is located on the lower surface of the top cover plate, and the insertion portion of the conductive electrode column passes through the through hole and is riveted to the pressure block.
[0017] Another object of the present invention is to provide a battery, which can improve the safety and reliability of the battery by using the above-mentioned battery top cover.
[0018] To achieve this purpose, the present invention adopts the following technical solutions:
[0019] A battery comprises an insulating battery shell, a battery cell and the aforementioned battery top cover, wherein the insulating battery shell comprises a hollow inner cavity with an opening, the battery cell is installed in the hollow inner cavity, and the battery top cover is buckled into the opening.
[0020] Beneficial effects of the utility model:
[0021] This embodiment provides a battery top cover, including a top cover plate, an upper plastic part and a conductive terminal. The top cover plate is provided with a through hole, in which a conductive terminal is installed; an upper plastic part is provided between the conductive terminal and the top cover plate, and a sealing reinforcement rib is provided on the surface of the upper plastic part. When the conductive terminal is installed on the through hole, the conductive terminal can press the upper plastic part between the conductive terminal and the top cover plate to seal the assembly gap between the conductive terminal and the top cover plate through the sealing reinforcement rib. By providing the above-mentioned sealing reinforcement rib, the structure of the entire battery top cover can be effectively simplified, so that the upper plastic part in the battery top cover integrates the sealing function of the sealing ring, thereby eliminating the need for the sealing ring in the battery top cover and simplifying the assembly steps. This not only helps to reduce the production cost of the entire battery top cover, but also ensures that the airtightness between the conductive terminal and the top cover plate is qualified.
[0022] This embodiment also provides a battery, which is provided with the above-mentioned battery top cover. In the battery top cover, since the surface of the upper plastic part is provided with a sealing reinforcement rib in a convex ring, when the conductive electrode column is riveted to the pressure block, the conductive electrode column and the top cover plate can simultaneously clamp the upper plastic part. At this time, the sealing reinforcement rib on the upper plastic part can seal the assembly gap between the conductive electrode column and the top cover plate, thereby ensuring that the airtightness between the conductive electrode column and the top cover plate meets the requirements, thereby ensuring the safety and reliability of the battery. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a front view of a battery top cover provided by an embodiment of the present utility model;
[0024] Figure 2 yes Figure 1 Cross-sectional view along the middle line AA;
[0025] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.
[0026] In the picture:
[0027] 1. Top cover plate; 11. Second compression limit groove; 12. Liquid injection hole;
[0028] 2. Upper plastic part; 201. Sealing reinforcement rib; 21. First sealing part; 22. Second sealing part;
[0029] 3. Conductive terminal; 301. Insertion portion; 302. Ring pressing portion; 3021. First compression limit groove; 31. Conductive electrode column; 32. Pressing block;
[0030] 4. Remove the plastic parts. DETAILED DESCRIPTION
[0031] 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.
[0032] 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.
[0033] 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.
[0034] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.
[0035] The technical solution provided by the present invention is described in detail below with reference to the accompanying drawings and embodiments.
[0036] Combine Figures 1 to 3As shown, this embodiment provides a battery top cover, comprising a top cover plate 1, an upper plastic member 2, and a conductive terminal 3. The top cover plate 1 is provided with a through-hole, into which the conductive terminal 3 is mounted. An upper plastic member 2 is disposed between the conductive terminal 3 and the top cover plate 1, and a sealing reinforcement rib 201 is provided around the surface of the upper plastic member 2. When the conductive terminal 3 is installed in the through-hole, the conductive terminal 3 can press the upper plastic member 2 between the conductive terminal 3 and the top cover plate 1, thereby sealing the assembly gap between the conductive terminal 3 and the top cover plate 1 via the sealing reinforcement rib 201.
[0037] By providing the above-mentioned sealing reinforcement ribs 201, the structure of the entire battery top cover can be effectively simplified, so that the upper plastic part 2 in the battery top cover integrates the sealing function of the sealing ring, thereby eliminating the need for the sealing ring in the battery top cover and simplifying the assembly steps. This not only helps to reduce the production cost of the entire battery top cover, but also ensures that the airtightness between the conductive terminal 3 and the top cover plate 1 is qualified.
[0038] It should also be noted that the sealing reinforcement rib 201 in the present application is directly injection molded on the upper plastic part 2, thereby improving the sealing performance and structural strength of the sealing reinforcement rib 201, improving the assembly stability of the sealing reinforcement rib 201, reducing the risk of structural failure of the sealing reinforcement rib 201, enhancing durability, and simplifying the production process.
[0039] Specifically, in this embodiment, combined with Figure 2 、 Figure 3 As shown, the conductive terminal 3 includes an insertion portion 301 and a pressing ring portion 302 connected in a T-shape, wherein the insertion portion 301 is inserted into the through hole, and the pressing ring portion 302 is connected to one end of the insertion portion 301 and pressed against the upper surface of the top cover plate 1; the upper plastic part 2 includes a first sealing portion 21 and a second sealing portion 22 connected in an L-shape, wherein the first sealing portion 21 is sandwiched between the insertion portion 301 and the inner side wall of the through hole, and the second sealing portion 22 is sandwiched between the pressing ring portion 302 and the upper surface of the top cover plate 1, and the above-mentioned sealing reinforcement rib 201 is provided on the second sealing portion 22. Through the above-mentioned arrangement, the pressing ring portion 302 can vertically press the sealing reinforcement rib 201 between the pressing ring portion 302 and the top cover plate 1 to achieve the effect of sealing the assembly gap, and the sealing effect is better. It is also easier to achieve the predetermined sealing effect by controlling the downward pressure, and at the same time, it can prevent the upper plastic part 2 from being crushed and cracked.
[0040] More specifically, in this embodiment, the conductive terminal 3 includes a conductive electrode column 31 and a pressure block 32. The conductive electrode column 31 includes the above-mentioned insertion portion 301 and the ring pressure portion 302. The pressure block 32 is located on the lower surface of the top cover plate 1. After the insertion portion 301 of the conductive electrode column 31 passes through the through hole, it is riveted to the pressure block 32. In the above arrangement, the positional relationship between the conductive electrode column 31 and the pressing block 32 is adjusted from "the conductive electrode column 31 is at the bottom and the pressing block 32 is at the top" to "the conductive electrode column 31 is at the top and the pressing block 32 is at the bottom", so that the existing pressing block 32 is pressed on the upper plastic part 2 and is replaced by the ring pressing portion 302 of the conductive electrode column 31 being pressed on the upper plastic part 2. In the process of the ring pressing portion 302 of the conductive electrode column 31 squeezing the upper plastic part 2, since the insertion portion 301 of the conductive electrode column 31 has been vertically inserted into the through hole at this time, the verticality of the conductive electrode column 31 when squeezing the upper plastic part 2 can be ensured through the through hole, thereby ensuring that the ring pressing portion 302 and the upper plastic part 2 have a high horizontal fit, thereby greatly improving the pressing effect on the upper plastic part 2 and ensuring the sealing of the upper plastic part 2.
[0041] It should be supplemented that, in this embodiment, the conductive electrode column 31 can be a positive electrode column or a negative electrode column, and the present invention is not limited to this.
[0042] Specifically, in this embodiment, referring to Figure 3 As shown, a sealing reinforcement rib 201 is provided on one side of the first sealing portion 21 facing the annular pressure portion 302, so as to achieve a sealing effect by blocking the assembly gap between the annular pressure portion 302 and the first sealing portion 21 through the sealing reinforcement rib 201. Furthermore, a first compression limit groove 3021 is provided on the annular pressure portion 302, and the first compression limit groove 3021 is relatively arranged to the sealing reinforcement rib 201. The bottom of the first compression limit groove 3021 is pressed against the top of the sealing reinforcement rib 201, and the vertical cross-sectional area of the first compression limit groove 3021 is larger than the vertical cross-sectional area of the sealing reinforcement rib 201, so that the first compression limit groove 3021 can accommodate the compressed and expanded sealing reinforcement rib 201, thereby preventing the upper surface of the first sealing portion 21 from exceeding the annular pressure portion 302 in the radial direction, causing the first sealing portion 21 to be exposed and affecting the appearance of the battery top cover.
[0043] More specifically, in this embodiment, continue to refer to Figure 3As shown, a sealing reinforcement rib 201 is also provided on the side of the first sealing portion 21 facing the upper surface of the top cover plate 1, so that the sealing reinforcement rib 201 can further enhance the sealing effect by simultaneously blocking the assembly gap between the annular pressure portion 302 and the first sealing portion 21, and between the top cover plate 1 and the first sealing portion 21. Furthermore, a second compression limit groove 11 is provided on the top cover plate 1, the bottom of the second compression limit groove 11 is pressed against the bottom of the sealing reinforcement rib 201 on the top cover plate 1, and the vertical cross-sectional area of the second compression limit groove 11 is larger than the vertical cross-sectional area of the sealing reinforcement rib 201, so that the second compression limit groove 11 can accommodate the compressed and expanded sealing reinforcement rib 201, thereby preventing the lower surface of the first sealing portion 21 from exceeding the annular pressure portion 302 in the radial direction, causing the first sealing portion 21 to be exposed and affecting the appearance of the battery top cover.
[0044] Preferably, in this embodiment, the vertical cross-section of the sealing reinforcement rib 201 is elliptical to meet actual manufacturing requirements under actual working conditions. Of course, in other embodiments, the vertical cross-section of the sealing reinforcement rib 201 can also be semicircular. It is understood that compared to a sealing reinforcement rib 201 with a square vertical cross-section, an elliptical or semicircular sealing reinforcement rib 201 has a better deformability, thereby facilitating a better fit on the annular pressure portion 302 and the top cover plate 1.
[0045] Preferably, in this embodiment, the vertical cross-sectional shape of the first compression limit groove 3021 and the second compression limit groove 11 is a square shape. Compared with other vertical cross-sectional shapes such as an ellipse, a semicircle, a trapezoid or a triangle, the square-shaped first compression limit groove 3021 and the second compression limit groove 11 are easier to process and manufacture and are easier to form, thereby effectively improving the production efficiency of the upper plastic part 2.
[0046] Optionally, in this embodiment, a lower plastic member 4 is further provided between the top cover plate 1 and the pressing block 32 in an insulating manner. In a specific implementation of this embodiment, the lower plastic member 4 is separately provided on the lower surface of the top cover plate 1. Since the structure and installation method of the lower plastic member 4 are commonly used in battery top covers in the art, this embodiment will not be further described here.
[0047] Furthermore, in this embodiment, a liquid injection hole 12 is further provided on the top cover plate 1 , and the liquid injection hole 12 is used to inject electrolyte into the interior of the battery.
[0048] Another purpose of this embodiment is to provide a battery, which includes a battery insulating shell, a battery cell and the above-mentioned battery top cover. The battery insulating shell includes a hollow inner cavity with an opening, the battery cell is installed in the hollow inner cavity, and the battery top cover is snapped onto the opening. Since the surface of the upper plastic part 2 is provided with a sealing reinforcement rib 201, when the conductive electrode column 31 is riveted to the pressure block 32, the conductive electrode column 31 and the top cover plate 1 can simultaneously clamp the upper plastic part 2. At this time, the sealing reinforcement rib 201 on the upper plastic part 2 can seal the assembly gap between the conductive electrode column 31 and the top cover plate 1, thereby ensuring that the airtightness between the conductive electrode column 31 and the top cover plate 1 meets the requirements, thereby ensuring the safety and reliability of the battery.
[0049] Throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0050] 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 top cover, characterized in that, The invention comprises a top cover plate (1), an upper plastic part (2) and a conductive terminal (3), wherein a through hole is provided on the top cover plate (1), the conductive terminal (3) is installed in the through hole, the upper plastic part (2) is provided between the conductive terminal (3) and the top cover plate (1), and a sealing reinforcement rib (201) is provided on the surface of the upper plastic part (2) in a convex manner. When the conductive terminal (3) is installed on the through hole, the conductive terminal (3) can press the upper plastic part (2) between the conductive terminal (3) and the top cover plate (1), so as to seal the assembly gap between the conductive terminal (3) and the top cover plate (1) through the sealing reinforcement rib (201).
2. The battery top cover according to claim 1, characterized in that: The conductive terminal (3) comprises an insertion portion (301) and a ring pressing portion (302) connected in a T-shape, wherein the insertion portion (301) is inserted into the through hole, and the ring pressing portion (302) is connected to one end of the insertion portion (301) and is crimped to the upper surface of the top cover plate (1); The upper plastic part (2) comprises a first sealing portion (21) and a second sealing portion (22) connected in an L-shape, wherein the first sealing portion (21) is sandwiched between the insertion portion (301) and the inner side wall of the through hole, and the second sealing portion (22) is sandwiched between the annular pressure portion (302) and the upper surface of the top cover plate (1), and the sealing reinforcement rib (201) is provided on the second sealing portion (22) in an annular convex manner.
3. The battery top cover according to claim 2, characterized in that: The sealing reinforcement rib (201) is provided in an annular manner on one side of the first sealing portion (21) facing the annular pressure portion (302).
4. The battery top cover according to claim 3, characterized in that: A first compression limiting groove (3021) is provided on the annular pressing portion (302), and the first compression limiting groove (3021) is arranged relative to the sealing reinforcement rib (201). The bottom of the first compression limiting groove (3021) is pressed against the top of the sealing reinforcement rib (201), and the vertical cross-sectional area of the first compression limiting groove (3021) is greater than the vertical cross-sectional area of the sealing reinforcement rib (201).
5. The battery top cover according to claim 4, characterized in that: The sealing reinforcement rib (201) is provided in a convex manner on one side of the upper surface of the second sealing portion (22) facing the top cover plate (1).
6. The battery top cover according to claim 5, characterized in that: A second compression limiting groove (11) is provided on the top cover plate (1), the bottom of the second compression limiting groove (11) is pressed against the bottom of the sealing reinforcement rib (201), the second compression limiting groove (11) is arranged relative to the sealing reinforcement rib (201), and the vertical cross-sectional area of the second compression limiting groove (11) is greater than the vertical cross-sectional area of the sealing reinforcement rib (201).
7. The battery top cover according to claim 6, characterized in that: The vertical cross-section of the sealing reinforcement rib (201) is elliptical or semicircular.
8. The battery top cover according to claim 6, characterized in that: The vertical cross-section shape of the first compression limiting groove (3021) and the second compression limiting groove (11) is a square shape.
9. The battery top cover according to claim 2, characterized in that: The conductive terminal (3) includes a conductive electrode column (31) and a pressing block (32), the conductive electrode column (31) includes the insertion portion (301) and the ring pressing portion (302), the pressing block (32) is located on the lower surface of the top cover plate (1), and the insertion portion (301) of the conductive electrode column (31) passes through the through hole and is riveted to the pressing block (32).
10. A battery, characterized in that The invention comprises a battery insulating shell, a battery cell and a battery top cover according to any one of claims 1 to 9, wherein the battery insulating shell comprises a hollow inner cavity with an opening, the battery cell is installed in the hollow inner cavity, and the battery top cover is buckled into the opening.