CN217062428U - Converging sheet structure and cylindrical battery - Google Patents
Converging sheet structure and cylindrical battery Download PDFInfo
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- CN217062428U CN217062428U CN202123236170.4U CN202123236170U CN217062428U CN 217062428 U CN217062428 U CN 217062428U CN 202123236170 U CN202123236170 U CN 202123236170U CN 217062428 U CN217062428 U CN 217062428U
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- 238000003466 welding Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of batteries, in particular to a confluence sheet structure and a cylindrical battery, wherein the confluence sheet structure comprises a plane part and a convex part; the edge of the first surface of the plane part is provided with a plurality of protruding parts, and the protruding parts are vertically connected with the first surface and are arranged at intervals along the edge of the first surface. The embodiment of the utility model provides a pair of piece structure and cylinder battery converge, in the piece structure converges, the lobe interval carries out the split design, each bellying independently sets up in the vertical direction promptly, but all connect on plane portion, the bellying is used for respectively with casing or other structural connection (for example, welded connection), because each bellying is independent each other, and then can eliminate whole stress, in order to avoid the insecure condition of connection because of stress produces, in addition, even if the bellying of one or several positions is connected inefficacy, the bellying of other positions still effectively connects, and then has still played the effect of multiple protection.
Description
Technical Field
The utility model relates to the technical field of batteries, especially, relate to a piece structure and cylinder battery converge.
Background
The bus bar sheet of the existing cylindrical battery is generally in a sheet structure, the bus bar sheet is directly welded with an internal winding core, and a connecting sheet can be arranged on the bus bar sheet and is mainly used for being welded with a top cover or a bottom cover of an external terminal of the battery, so that internal current is led to the outside through the connecting sheet; the bus bar can be provided with no connecting sheet, and when the connecting sheet is not provided, the bus bar can be directly welded with the bus bar in a penetration welding mode if the internal current is required to be led to the outside by the bus bar; the bus sheet can also adopt a vertical elastic telescopic structure, and the bus sheet and the external connection of the structure mainly adopt a hard contact mode and can be combined with a welding mode in an auxiliary mode.
However, when the connection is performed through the connection sheet, the overcurrent capacity of the battery is limited by the welding area of the connection sheet, and the single sheet type bus sheet and the bus sheet structure directly welded outside have high requirements on the planes of the internal sheet type and the winding core welding machine, poor welding is easily generated by adopting external penetration welding, and metal chips are easily caused; and the bus bar piece that adopts vertical elastic telescopic structure can occupy inner space, not only compresses the core that rolls up, and the not firm condition of connecting still can appear in the mode of hard contact moreover.
Disclosure of Invention
For solving the technical problem who exists at least more than among the prior art, the embodiment of the utility model provides a converge piece structure and cylinder battery.
An aspect of the present invention provides a bus bar structure, which includes a planar portion and a protruding portion; the edge of the first surface of plane portion is equipped with a plurality ofly the bellying, it is a plurality of the bellying with the first surface is connected perpendicularly, and follows the edge interval of first surface sets up.
In some embodiments, the planar portion has a circular shape, and the plurality of protruding portions are spaced apart from the circular edge of the first surface.
In some embodiments, the plurality of protrusions are evenly spaced at the rounded edge of the first surface.
In some embodiments, the protrusion is a strip-shaped plate, and one long side of the protrusion is perpendicularly connected to the first surface.
In some embodiments, the convex portion is arc-shaped, and the center of a circle to which the convex portion belongs coincides with the center of the plane portion; the plurality of the convex parts are positioned on the edge of the first surface and enclose a ring shape.
In some embodiments, an end of the protrusion is connected to the first surface by a connecting layer; or the convex part is connected with the first surface through an inner concave round corner structure or an outer convex round corner structure.
In some embodiments, the planar portion comprises a circular plate comprising a plurality of hollowed-out holes therein; the hollow hole is internally provided with a sub-plate, the surface of the sub-plate is flush with the surface of the circular plate, one part of the edge of the sub-plate is arranged at intervals with the inner wall of the hollow hole, and the other part of the edge is connected with the circular plate.
In some embodiments, the number of projections is 3 to 18.
In some embodiments, the protrusion is fixedly connected to the planar portion by welding.
The embodiment of the utility model provides an on the other hand provides a cylindrical battery, including above-mentioned confluence piece structure.
The embodiment of the utility model provides a pair of piece structure and cylinder battery converge, in the piece structure converges, the lobe interval carries out the split design, each bellying independently sets up at the vertical direction promptly, but all connect on plane portion, the bellying is used for respectively with casing or other structural connection (for example, welded connection), because each bellying is independent each other, and then can eliminate whole stress, in order to avoid the insecure condition of connection because of stress produces, in addition, even if the bellying of one or several positions is connected inefficacy, the arch of other positions still effectively connects, and then has played the effect of multiple protection.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
Fig. 1 is a schematic structural view of a bus bar structure according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a bus bar structure according to an embodiment of the present invention;
fig. 3 is a front view of a bus bar structure according to an embodiment of the present invention.
In the figure:
1: a planar portion; 2: a boss portion;
11: hollowing out holes; 12: a daughter board.
Detailed Description
To make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.
The bus bar is used to collect the current inside the battery and to guide the collected current to the external terminal, and the external terminal may be, for example, a terminal directly connected to the bus bar structure, or a member such as a case or a top cover and a bottom cover.
As shown in fig. 1-3, the present invention provides a bus bar structure, which includes a planar portion 1 and a protruding portion 2; the edge of the first surface of the plane part 1 is provided with a plurality of protruding parts 2, and the plurality of protruding parts 2 are vertically connected with the first surface and are arranged at intervals along the edge of the first surface.
In some embodiments, the bus bar structure combines the plane portion 1 and the protruding portion 2, that is, the plane portion 1 and the protruding portion 2 constitute a structural member, and the connection and the switching action of the battery can be realized by using the structural member, specifically, the plane portion 1 is connected with the winding core of the battery, and the protruding portion 2 is connected with the external switching structure.
In addition, the convex part 2 is not only connected with the plane part 1, but also a plurality of convex parts 2 are arranged independently, namely, intervals exist among the convex parts 2, and the design mode can remove the connection stress so as to avoid the condition of unstable connection caused by the stress; and even if one or more local switching connections are not firm, and the local switching fails, the connection and the overcurrent capacity of the whole body cannot be influenced because each boss 2 is independently arranged.
In some embodiments, the shape of the planar portion 1 is determined according to the shape of the battery to which it is connected. For example, if the battery is cylindrical, the flat portion 1 is circular. For example, if the battery has a prismatic shape, the planar portion 1 has a corresponding polygonal shape.
With continued reference to fig. 1-3, the planar portion 1 is shown as being circular in shape, with a plurality of raised portions 2 spaced apart along the circular edge of the first surface. The plurality of protrusions 2 may be uniformly spaced or non-uniformly spaced. For example, according to the requirement of the switching design, the corresponding protrusions 2 are provided on the flat surface portion 1 only at the portion where switching is required by adopting a non-uniform interval arrangement manner, or for example, the protrusions 2 are provided on the edge of the flat surface portion 1 partially or entirely at a uniform interval manner.
For example, as shown in fig. 1-3, 12 protrusions 2 are uniformly spaced at the edge of the circular flat plate portion, and this arrangement can reduce the design difficulty of the bus bar structure and improve the versatility of the product. When the product is used, the bulge part 2 at the proper position is selected to be connected with the corresponding switching structure.
In some embodiments, the number of projections 2 should be such that a good stress relief capability is ensured for the product.
For example, the number of the projections 2 is 3 to 18. For example, in fig. 1 to 3, the number of the convex portions 2 is 12, and the shape of the flat surface portion 1 is a circle, that is, the circle is divided into 12 equal parts, each part is 30 degrees, and one convex portion 2 is provided on each 30-degree circumference.
In some embodiments, the protruding part 2 should have a certain connection area. For example, the connection area enables a welded connection of the projection 2 to a component such as a housing, a top cover or a bottom cover. For example, the protrusion 2 is a strip-shaped plate, and one of the long sides of the protrusion 2 is perpendicularly connected to the first surface. Two sides of the strip-shaped plate have a certain area and can be used for welding connection.
In some embodiments, the plurality of protrusions 2 may enclose the same shape at the edge of the planar portion 1 as the edge of the planar portion 1, for example, the plurality of protrusions 2 may be spaced apart and enclose a circle, or the plurality of protrusions 2 may be spaced apart and enclose a polygon, for example. The shape of the projection 2 is set in such a manner that the bus bar structure has high adaptability (refer to the following description).
With continued reference to fig. 1-3, for example, the protrusion 2 has an arc shape, and the center of the circle to which the protrusion 2 belongs coincides with the center of the plane portion 1; the plurality of convex parts 2 are positioned on the edge of the first surface and surround into a circular ring shape.
For example, when the planar portion 1 is circular, the edge of the protrusion 2 on the planar portion 1 is also circular, that is, each protrusion 2 has a certain arc shape. The bus bar sheet structure with the corresponding shape is applied to the battery with the corresponding shape, when the bus bar sheet structure shown in fig. 1-3 is applied to the cylindrical battery, for example, the radian of the bulge part 2 is matched with the radian of the shell, the radian of the bulge part and the radian of the shell are consistent, the matching degree is higher, and the connection operation, for example, the welding operation is facilitated.
In some embodiments, the protrusion 2 is fixedly connected with the first surface of the planar portion 1 by a connection structure. For example, the protruding portion 2 and the plane portion 1 are fixedly connected by bonding, clipping, welding, or the like. For example, the end of the boss 2 is connected to the first surface by a connecting layer; alternatively, for example, the boss 2 and the first surface are connected by a concave rounded structure or a convex rounded structure.
For example, the convex portion 2 and the plane portion 1 are formed as a single structure, for example, by casting, or, for example, by 3D printing.
In some embodiments, the planar portion 1 comprises a circular plate comprising a plurality of hollowed-out holes 11; the sub-plate 12 is arranged in the hollow hole 11, the surface of the sub-plate 12 is flush with the surface of the circular plate, one part of the edge of the sub-plate 12 is arranged at intervals with the inner wall of the hollow hole 11, and the other part of the edge is connected with the circular plate.
As shown in fig. 1-3, for example, the planar portion 1 comprises 4 sub-sheets 12. The daughter board 12 structure is respectively connected with the winding core structure, so that the effect of eliminating stress can be achieved; and, when the connection of the individual sub-board 12 fails, the overall connection effect is not affected. In addition, the daughter board 12 in the plane portion 1 adopts a symmetrical and uniform arrangement mode, so that the design difficulty of the product can be reduced, and the universality of the product can be improved.
The embodiment of the utility model provides a still provide a cylinder battery, this cylinder battery includes above-mentioned confluence piece structure.
When the bus plate structure is connected with the battery, the plane part can be directly welded with the winding core, and then the winding core and the bus plate structure are connected together; the raised portions are welded to the battery housing, or other interconnecting structural components, such as the top or bottom end plates, for example, optionally by one or more of laser welding, ultrasonic welding, or resistance welding, to complete the assembly of the bus bar structure to the battery.
The embodiment of the utility model provides a pair of bus bar piece structure and cylinder battery, in the bus bar piece structure, the lobe interval carries out the split design, each bellying independently sets up in the vertical direction promptly, but all connect on plane portion, the bellying is used for respectively with casing or other structural connection (for example, welded connection), because each bellying is independent each other, and then can eliminate stress, in order to avoid the insecure condition of connection because of stress produces, in addition, even if the bellying of one or several positions is connected inefficacy, the arch of other positions still effectively connects, and then has still played the effect of multiple protection.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A bus bar structure is characterized by comprising a plane part (1) and a convex part (2);
the edge of the first surface of plane portion (1) is equipped with a plurality ofly bellying (2), and is a plurality of bellying (2) with first surface is perpendicular to be connected, and follows the edge interval of first surface sets up.
2. Bus bar structure according to claim 1, characterized in that the planar portion (1) is circular and the plurality of protrusions (2) are spaced apart at the circular edge of the first surface.
3. Bus bar structure according to claim 2, wherein a plurality of the protrusions (2) are evenly spaced at the circular edge of the first surface.
4. Bus bar structure according to claim 2, characterized in that the protrusion (2) is a strip-shaped plate, one of the long sides of the protrusion (2) being perpendicularly connected to the first surface.
5. The bus bar structure according to claim 4, wherein the protrusion (2) is arc-shaped, and a center of a circle to which the protrusion (2) belongs coincides with a center of the plane portion (1);
the plurality of the convex parts (2) are positioned on the edge of the first surface and enclose a circular ring shape.
6. Bus bar structure according to any of claims 2 to 5, characterized in that the ends of the protrusions (2) are connected with the first surface by a connecting layer; or alternatively
The convex part (2) is connected with the first surface through an inwards concave round corner structure or an outwards convex round corner structure.
7. Bus bar structure according to claim 6, wherein the planar portion (1) comprises a circular plate comprising a plurality of hollowed-out holes (11);
be equipped with subplate (12) in fretwork hole (11), the surface of subplate (12) with the surface of circular slab flushes, and a part edge of subplate (12) with the inner wall interval of fretwork hole (11) sets up, another part edge with the circular slab is connected.
8. Bus bar structure according to any of claims 2 to 5, characterized in that the number of protrusions (2) is 3 to 18.
9. Bus bar structure according to any of claims 2 to 5, characterized in that the raised portion (2) and the planar portion (1) are fixedly connected by welding.
10. A cylindrical battery, characterized by comprising the bus bar structure of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236170.4U CN217062428U (en) | 2021-12-21 | 2021-12-21 | Converging sheet structure and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236170.4U CN217062428U (en) | 2021-12-21 | 2021-12-21 | Converging sheet structure and cylindrical battery |
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| Publication Number | Publication Date |
|---|---|
| CN217062428U true CN217062428U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123236170.4U Active CN217062428U (en) | 2021-12-21 | 2021-12-21 | Converging sheet structure and cylindrical battery |
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| CN (1) | CN217062428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031841A1 (en) * | 2022-08-11 | 2024-02-15 | 湖北亿纬动力有限公司 | Current collector disc and battery |
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2021
- 2021-12-21 CN CN202123236170.4U patent/CN217062428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031841A1 (en) * | 2022-08-11 | 2024-02-15 | 湖北亿纬动力有限公司 | Current collector disc and battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUIZHOU EVERPOWER TECHNOLOGY Co.,Ltd.|Huizhou Hengtai Lithium Energy Technology Co.,Ltd. Assignor: Yunshan new energy material technology (Shenzhen) Co.,Ltd. Contract record no.: X2023980047895 Denomination of utility model: Structure of busbar and cylindrical battery Granted publication date: 20220726 License type: Common License Record date: 20231122 |