CN217641566U - Top cap and secondary battery - Google Patents
Top cap and secondary battery Download PDFInfo
- Publication number
- CN217641566U CN217641566U CN202221411387.6U CN202221411387U CN217641566U CN 217641566 U CN217641566 U CN 217641566U CN 202221411387 U CN202221411387 U CN 202221411387U CN 217641566 U CN217641566 U CN 217641566U
- Authority
- CN
- China
- Prior art keywords
- welding
- top cap
- supporting part
- lower plastic
- weld
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a top cap and secondary battery relates to the battery and makes technical field. The top cap includes top cap body and lower plastic. The top cap body is provided with utmost point post, and lower plastic sets up in the bottom surface of top cap body. Through set up the weld part on plastic down, provide welding area for the extension of utmost point post and roll up the core welding, establish the supporting part at the adjacent position of weld part is protruding simultaneously, carry out the bodiness to the thickness of non-welding area's supporting part promptly, play the supporting role to the welding frock in order to realize the supporting part, satisfied the welding demand, ensured stable in structure is reliable in welding process, guarantee welding quality, and do not need extra auxiliary fixtures, welding efficiency is improved, welding cost is reduced. In addition, the protruding supporting part enables the lower plastic to be locally thickened, so that the insulating capability of the lower plastic is effectively improved, and the influence of welding on the lower plastic is weakened to the maximum extent.
Description
Technical Field
The utility model relates to a battery manufacturing technical field particularly, relates to a top cap and secondary battery.
Background
In the production process of the existing battery, the adapter plate is usually welded with the pole base of the battery top cover, and the base can support the welding tool under the condition. And if the top cap of battery and the core welding of electric core are directly rolled up, current battery top cap structure can have the clearance with welded structure in welding process, leads to unable butt welding frock to support to can't compress tightly the welding position, thereby can't satisfy utmost point post and the core direct welded demand of electric core.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a top cap and secondary battery, it can play the supporting role to the welding frock, makes things convenient for the top cap and rolls up the core and directly welds.
The embodiment of the utility model is realized like this:
in a first aspect, the utility model provides a top cover, which comprises a top cover body and a lower plastic cement;
the top cover body is provided with a pole column;
the plastic set up in the bottom surface of top cap body down, the plastic is provided with weld part and supporting part down, the supporting part with the weld part is adjacent, the supporting part is arranged in playing the supporting role to the welding frock in welding process, the weld part is used for supplying the extension and the book core welding of utmost point post.
In an alternative embodiment, the supporting portion is protruded around the welding portion, so that the welding portion is in a groove shape.
In an alternative embodiment, the horizontal projection of the weld is square.
In an optional embodiment, the number of the welding parts comprises two, the horizontal projections of the two welding parts are rectangular, and the two welding parts are arranged in parallel and extend along the length direction of the top cover body.
In an alternative embodiment, the horizontal projections of the welding part and the supporting part are in a shape of Chinese character 'ri'.
In an optional embodiment, one side of the supporting portion is adjacent to the pole, and the other side of the supporting portion is spaced from the explosion-proof valve of the top cover body.
In an optional embodiment, both sides of the bottom surface of the top cover body are provided with a welding part and a supporting part, and the welding part and the supporting part at both ends are symmetrically arranged.
In an alternative embodiment, the thickness of the support is less than or equal to 2mm.
In an alternative embodiment, the distance between the surface of the support portion and the surface of the weld portion is greater than or equal to 0.1mm and less than or equal to 2mm.
In a second aspect, the present invention provides a secondary battery comprising a top cap according to any one of the preceding embodiments.
The embodiment of the utility model provides a top cap and secondary battery's beneficial effect includes: through set up the weld part on plastic down, provide welding area for the extension of utmost point post and roll up the core welding, establish the supporting part at the adjacent position of weld part is protruding simultaneously, carry out the bodiness to the thickness of non-welding area's supporting part promptly, play the supporting role to the welding frock in order to realize the supporting part, satisfied the welding demand, ensured stable in structure is reliable in welding process, guarantee welding quality, and do not need extra auxiliary fixtures, welding efficiency is improved, welding cost is reduced. In addition, the protruding supporting part that establishes makes down the local bodiness of plastic to make the insulating ability of plastic effectively improve down, with furthest weakened the welding to the influence of plastic down.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a first embodiment of a top cover according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a second embodiment of the top cover according to an embodiment of the present invention.
Icon: 10-a top cover; 100-a top cover body; 110-pole column; 120-an explosion-proof valve; 200-lower plastic cement; 210-a weld; 220-a support portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Referring to fig. 1 and 2, the present invention provides a top cap 10 for a secondary battery, wherein the top cap 10 includes a top cap body 100 and a lower plastic 200.
Wherein the top cap body 100 is provided with the terminal post 110, the lower plastic 200 is disposed on the bottom surface of the top cap body 100, the lower plastic 200 is provided with a welding portion 210 and a supporting portion 220, the supporting portion 220 is adjacent to the welding portion 210, the supporting portion 220 is used for supporting a welding tool (not shown) in a welding process, and the welding portion 210 is used for welding an extending portion (not shown) of the terminal post 110 with a winding core (not shown).
In this embodiment, the bottom surface of the top cover body 100 refers to a surface of the top cover 10 facing the battery cell and mounted on the secondary battery, and the lower plastic 200 is attached to the bottom surface of the top cover body 100. Through set up weld part 210 on plastic 200 down, provide welding area for the extension of utmost point post 110 and the welding of book core, simultaneously at weld part 210 the adjacent position is protruding establishes supporting part 220, carry out the bodiness to non-welding area's supporting part 220's thickness promptly, play the supporting role to the welding frock in order to realize supporting part 220, the welding demand has been satisfied, stable in structure is reliable in welding process has been ensured, guarantee welding quality, and need not extra auxiliary fixtures, the welding efficiency is improved, the welding cost is reduced. In addition, the protruding supporting portion 220 locally thickens the lower plastic 200, so that the insulating capability of the lower plastic 200 is effectively improved, and the influence of welding on the lower plastic 200 is weakened to the maximum extent.
Specifically, the thickness of the support part 220 is less than or equal to 2mm.
The extending portion of the pole 110 and the winding core are welded by laser welding.
Further, the supporting portion 220 is protruded around the welding portion 210, so that the welding portion 210 is in a groove shape.
In this embodiment, the supporting portion 220 and the welding portion 210 jointly form a structure with high periphery and low middle, and the supporting portion 220 is convexly arranged around the welding portion 210, so that the contact area between the supporting portion 220 and the welding tool can be increased, the supporting stability of the supporting portion 220 to the welding work is improved, and the smooth proceeding of welding is ensured. The welding portion 210 is recessed relative to the support portion 220, so as to form an avoiding welding area for laser welding the terminal post 110 and the winding core extending into the recessed welding portion 210.
Further, the depth of the groove, that is, the distance between the surface of the support portion 220 and the surface of the welding portion 210, is greater than or equal to 0.1mm and less than or equal to 2mm, so that the support portion 220 can be ensured to avoid a sufficient welding space for the tab and the winding core.
Further, the horizontal projection of the welding part 210 is square-shaped.
In the present embodiment, as shown in fig. 1, when the width of the cap body 100 is narrow, for example, when the width of the cap body 100 is 32mm, the welding part 210 is generally square.
As shown in fig. 2, when the width of the top lid body 100 is wide, the horizontal projections of the welding part 210 and the supporting part 220 are formed in a shape of a Chinese character 'ri' when the width of the top lid body 100 is 63 mm.
Specifically, in this embodiment, the number of the welding portions 210 includes two, and the horizontal projections of the two welding portions 210 are rectangular, and the two welding portions 210 are disposed in parallel and extend along the length direction of the top cover body 100.
In the present embodiment, no matter the welding portion 210 is square or the welding portion 210 and the supporting portion 220 are square, the hollowed-out welding portion 210 can avoid directly contacting with the welded metal part to damage the lower plastic 200 during the welding process, thereby ensuring the structural integrity of the lower plastic 200 and maintaining the insulation function.
Further, one side of the supporting portion 220 is adjacent to the pole 110, and the other side is spaced from the explosion-proof valve 120 of the top cover body 100.
In the present embodiment, the supporting portion 220 is disposed close to the electrode post 110, and the supporting portion 220 is located around the welding portion 210, so as to facilitate laser welding of the extending portion of the electrode post 110 and the winding core at the welding portion 210.
Further, both sides of the bottom surface of the top cover body 100 are provided with a welding portion 210 and a supporting portion 220, and the welding portion 210 and the supporting portion 220 located at both ends are symmetrically disposed.
In this embodiment, the pole post 110 includes a positive post 110 and a negative post 110, and a welding portion 210 and a support portion 220 are provided near both the positive post 110 and the negative post 110, so as to achieve laser welding of the positive tab of the winding core and the extended portion of the positive post 110, and laser welding of the negative tab of the winding core and the extended portion of the negative post 110.
Further, the present invention also provides a secondary battery (not shown) including the top cap 10 according to the above embodiment.
To sum up, the utility model provides a top cap 10 and secondary battery, through set up weld part 210 on plastic 200 down, provide welding area for utmost point post 110's extension and the welding of book core, the protruding supporting part 220 of establishing in the adjacent position of weld part 210 simultaneously, carry out the bodiness to the thickness of non-welding area's supporting part 220 promptly, play the supporting role to the welding frock in order to realize supporting part 220, the welding demand has been satisfied, stable in structure is reliable in welding process has been ensured, guarantee welding quality, and need not extra auxiliary fixtures, welding efficiency is improved, the welding cost is reduced. In addition, the protruding support portion 220 makes the lower plastic 200 locally thicken, so that the insulating capability of the lower plastic 200 is effectively improved, and the influence of welding on the lower plastic 200 is weakened to the maximum extent.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A top cover is characterized by comprising a top cover body and lower plastic;
the top cover body is provided with a pole column;
lower plastic set up in the bottom surface of top cap body, lower plastic is provided with weld part and supporting part, the supporting part with the weld part is adjacent, the supporting part is used for playing the supporting role to the welding frock in welding process, the weld part is used for supplying the extension portion and the core welding of utmost point post.
2. The overcap of claim 1, wherein the support portion is raised about the weld portion to provide the weld portion with a grooved shape.
3. The overcap of claim 1, wherein a horizontal projection of the weld is square-shaped.
4. The overcap of claim 1, wherein the number of the soldering portions includes two, and the horizontal projection of the two soldering portions is rectangular, and the two soldering portions are disposed in parallel and extend along the length direction of the overcap body.
5. The overcap of claim 4, wherein the weld and the support portion together have a horizontal projection that is in the shape of a Chinese character 'ri'.
6. The top cap of claim 1, wherein one side of the support portion is adjacent to the pole, and the other side is spaced from the explosion-proof valve of the top cap body.
7. The top cover according to claim 1, wherein the welding part and the supporting part are arranged on both sides of the bottom surface of the top cover body, and the welding part and the supporting part at both ends are symmetrically arranged.
8. The overcap of claim 1, wherein the support portion has a thickness of less than or equal to 2mm.
9. The overcap of claim 1, wherein a distance between a surface of the support portion and a surface of the weld portion is greater than or equal to 0.1mm and less than or equal to 2mm.
10. A secondary battery comprising the top cap according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221411387.6U CN217641566U (en) | 2022-06-01 | 2022-06-01 | Top cap and secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221411387.6U CN217641566U (en) | 2022-06-01 | 2022-06-01 | Top cap and secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217641566U true CN217641566U (en) | 2022-10-21 |
Family
ID=83622545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221411387.6U Active CN217641566U (en) | 2022-06-01 | 2022-06-01 | Top cap and secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217641566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116581467A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Lower plastic, top cover assembly, energy storage device and electric equipment |
-
2022
- 2022-06-01 CN CN202221411387.6U patent/CN217641566U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116581467A (en) * | 2023-07-12 | 2023-08-11 | 深圳海辰储能控制技术有限公司 | Lower plastic, top cover assembly, energy storage device and electric equipment |
| CN116581467B (en) * | 2023-07-12 | 2023-10-03 | 深圳海辰储能控制技术有限公司 | Lower plastic, top cover assembly, energy storage device and electric equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217641566U (en) | Top cap and secondary battery | |
| CN216850226U (en) | Battery pack | |
| JP2000195539A (en) | Storage battery provided with electrode having edge reinforced by strip | |
| CN218887455U (en) | Battery and electronic device | |
| CN215933657U (en) | Battery with a battery cell | |
| KR100599598B1 (en) | Secondary battery, electrodes assembly and plate using the same | |
| CN116111293A (en) | Tab welding structure, battery and electronic product | |
| CN115732625A (en) | Electrode plate processing method and battery cell processing method | |
| CN110400959A (en) | A kind of winding double-core packet, winding double-core pack the method for making and lithium ion battery | |
| CN109904380A (en) | A kind of circle high power lithium ion cell structure and preparation method thereof | |
| CN117099257A (en) | Battery cell | |
| CN216850254U (en) | Battery and battery pack | |
| JP2000260418A (en) | Collector for cylindrical storage battery and cylindrical storage battery | |
| CN212571138U (en) | Single battery and power battery | |
| CN218602679U (en) | Electric connection sheet and battery | |
| CN217444466U (en) | Electricity core structure and electricity core | |
| CN216354342U (en) | Battery core pole group and laminated battery | |
| JPH10275610A (en) | Sealed storage battery | |
| CN217035905U (en) | Lithium battery connecting sheet structure and lithium battery | |
| CN218300139U (en) | Busbar aluminum bar, battery module and battery pack | |
| JPH09293493A (en) | Battery pack | |
| CN221041461U (en) | Cover plate assembly and battery cell assembly | |
| CN218548723U (en) | Switching piece and battery | |
| CN219534815U (en) | Battery and battery pack | |
| CN213546528U (en) | Double-plug type pole, connecting sheet and battery module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |