CN215008505U - Tab structure and soft-packaged button battery - Google Patents
Tab structure and soft-packaged button battery Download PDFInfo
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- CN215008505U CN215008505U CN202120192793.7U CN202120192793U CN215008505U CN 215008505 U CN215008505 U CN 215008505U CN 202120192793 U CN202120192793 U CN 202120192793U CN 215008505 U CN215008505 U CN 215008505U
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- 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
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Abstract
The application provides a utmost point ear structure and soft packet of button cell. The lug structure is used for being electrically connected with the winding core and the packaging film shell respectively, the packaging film shell is provided with a position avoiding hole, a fixing part surrounding the position avoiding hole is arranged in the packaging film shell, and the lug structure comprises a fixed lug assembly and a connecting lug; the fixed lug assembly comprises a lug main body and a first lug colloid at least formed on one side of the lug main body, the lug main body is connected with a winding core through a connecting lug, the first lug colloid is used for being connected with the fixed part, the first lug colloid is formed with an exposed hole used for being corresponding to the avoiding hole, the lug main body is exposed in the exposed hole, and the fixed part surrounds the exposed hole in the projection of the first lug colloid. The connecting area of the first tab colloid and the fixing part is large, so that the first tab colloid is firmly connected with the fixing part, the problem of poor use reliability of the button battery is solved, and meanwhile, the size of the formed soft package button battery is small and the volume capacity density is large.
Description
Technical Field
The utility model relates to a technical field of battery especially relates to a utmost point ear structure and soft packet of button cell.
Background
Button cell, also called button cell, generally includes plastic-aluminum membrane, rolls up core, box hat and apron etc. promptly need to set up metal support piece such as box hat and apron in the button cell in order to ensure the electric connection of the positive negative pole of rolling up the core, through borduring sealing connection between box hat and the lid in an organic whole, though ensure that the utmost point ear of electric core does not expose, avoided the problem of utmost point ear short circuit or rupture, but this kind of project organization makes button cell's volume great, and volume capacity density is less.
Certainly, there are button cells in the market that adopt a pure soft package, and the end of the tab of the winding core is directly and fixedly connected with the connection area of the aluminum-plastic film, so that the tab is electrically connected with the aluminum-plastic film, but the connection strength of the tab and the aluminum-plastic film is poor, that is, the tab is easily separated from the connection position of the aluminum-plastic film, and the use reliability of the button cell is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a less, the great and better utmost point ear structure and the soft packet of button cell of reliability of use of volume capacity density.
The purpose of the utility model is realized through the following technical scheme:
a tab structure is used for being electrically connected with a winding core and an encapsulation film shell respectively, a position avoiding hole is formed in the encapsulation film shell, a fixing part surrounding the position avoiding hole is arranged in the encapsulation film shell, and the tab structure comprises a fixed tab assembly and a connecting tab; fixed utmost point ear subassembly include utmost point ear main part and at least the shaping in the first utmost point ear colloid of utmost point ear main part one side, utmost point ear main part be used for passing through connect utmost point ear with roll up the core and connect, first utmost point ear colloid be used for with the fixed part is connected, just first utmost point ear colloid be formed with be used for with keep away the corresponding naked hole in position hole, utmost point ear main part expose in naked hole, the fixed part is in the projection of first utmost point ear colloid encircle in naked hole.
In one embodiment, the connection tab has a strip-like structure.
In one embodiment, the tab body has a greater width in a direction perpendicular to the direction of extension of the connection tab than the width of the connection tab.
In one embodiment, the exposed hole is a circular hole.
In one embodiment, the fixing tab assembly further comprises a second tab colloid, wherein the second tab colloid is at least formed on one side of the tab main body, which faces away from the first tab colloid; the first tab colloid and the second tab colloid are coated on the periphery of the tab main body together; one side of the second lug colloid, which deviates from the first lug colloid, is formed with a connecting hole, the lug main body part is exposed in the connecting hole, and the connecting lug passes through the connecting hole and is connected with the lug main body.
In one embodiment, the connection hole is a circular hole.
In one embodiment, the fixing tab assembly further comprises a second tab colloid, wherein the second tab colloid is at least formed on one side of the tab main body, which faces away from the first tab colloid; the connection utmost point ear keep away from the end connection of rolling up the core in utmost point ear main part, first utmost point ear colloid and/or second utmost point ear colloid cladding in connect utmost point ear connect in the position of utmost point ear main part, first utmost point ear colloid with the common cladding of second utmost point ear colloid in the periphery of utmost point ear main part.
A soft package button battery comprises a winding core, a packaging film shell and the tab structure in any embodiment, wherein the tab structure is electrically connected with the winding core and the packaging film shell respectively; roll up the core and be located in the encapsulation membrane shell, utmost point ear main part passes through connect utmost point ear with roll up the core and connect, first utmost point ear colloid with the fixed part is connected, just first utmost point ear colloid be formed with keep away the corresponding naked hole in position hole, the fixed part is in the projection of first utmost point ear colloid encircle in naked hole.
In one embodiment, the center line of the avoiding hole is collinear with the center line of the exposed hole.
In one embodiment, the clearance hole is a circular hole.
In one embodiment, the diameter of the clearance hole is larger than the diameter of the exposed hole.
In one embodiment, the fixing portion is an annular connecting surface.
In one embodiment, the surface of the fixing portion is provided with a plurality of bumps distributed at intervals.
In one embodiment, the projection of the position avoiding hole on the tab colloid surrounds the exposed hole.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. because the tab main body is exposed through the exposed hole and the first tab colloid is connected with the fixed part, the exposed hole corresponds to the avoiding hole, so that the tab main body is exposed through the exposed hole and the avoiding hole;
2. because the projection of fixed part at utmost point ear colloid surrounds in naked exposure hole, make first utmost point ear colloid only at the position that corresponds with avoiding a hole and hollowing out and form naked exposure hole, not only realize the external electrically conductive effect of utmost point ear, make the area of connection of first utmost point ear colloid and fixed part great moreover, and then make first utmost point ear colloid and fixed part firm connection, the relatively poor problem of button cell's use reliability has been solved, realize metal support elements's such as no steel casing packaging structure simultaneously, make the soft packet of button cell's after the shaping less and volume capacity density great.
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 diagram of a soft-packaged button battery according to an embodiment;
fig. 2 is a schematic structural diagram of a fixed tab assembly of the soft-packaged button battery shown in fig. 1;
fig. 3 is a cross-sectional view of a fixed tab assembly of the softly wrapped button cell shown in fig. 2;
fig. 4 is a partial schematic view of a fixed tab assembly of the softly wrapped button cell shown in fig. 2;
fig. 5 is a partial schematic view of an encapsulating film shell of the softly wrapped button cell shown in fig. 1;
fig. 6 is a schematic structural diagram of another view angle of a fixed tab assembly of the softly wrapped button battery shown in fig. 1;
fig. 7 is a schematic connection diagram of a fixed tab assembly and a connection tab of the soft-packaged button battery shown in fig. 1;
fig. 8 is a schematic structural diagram of a soft-packaged button cell according to another embodiment;
fig. 9 is a schematic view of the connection between the fixed tab assembly and the connection tab of the soft-packaged button battery shown in fig. 8.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The application provides a tab structure, which is used for being electrically connected with a winding core and an encapsulation film shell respectively, wherein a position avoiding hole is formed in the encapsulation film shell, a fixing part surrounding the position avoiding hole is arranged in the encapsulation film shell, and the tab structure comprises a fixed tab assembly and a connecting tab; fixed utmost point ear subassembly include utmost point ear main part and at least the shaping in the first utmost point ear colloid of utmost point ear main part one side, utmost point ear main part be used for passing through connect utmost point ear with roll up the core and connect, first utmost point ear colloid be used for with the fixed part is connected, just first utmost point ear colloid be formed with be used for with keep away the corresponding naked hole in position hole, utmost point ear main part expose in naked hole, the fixed part is in the projection of first utmost point ear colloid encircle in naked hole.
In the tab structure, the tab main body is exposed through the exposed hole, and the first tab colloid is connected with the fixing part, so that the exposed hole corresponds to the avoiding hole, and the tab main body is exposed through the exposed hole and the avoiding hole. Because the projection of fixed part at utmost point ear colloid surrounds in naked exposure hole, make first utmost point ear colloid only at the position that corresponds with avoiding a hole and hollowing out and form naked exposure hole, not only realize the external electrically conductive effect of utmost point ear, make the area of connection of first utmost point ear colloid and fixed part great moreover, and then make first utmost point ear colloid and fixed part firm connection, the relatively poor problem of button cell's use reliability has been solved, realize metal support elements's such as no steel casing packaging structure simultaneously, make the soft packet of button cell's after the shaping less and volume capacity density great.
As shown in fig. 1 and 2, the pouch button cell 10 of an embodiment includes a winding core 100, an encapsulation film shell 200, and a tab structure 300 electrically connected to the winding core and the encapsulation film shell, respectively. The packaging film case 200 is provided with a position-avoiding hole 210, and in this embodiment, the position-avoiding hole 210 penetrates through the packaging film case 200. As shown in fig. 1 and fig. 5, a fixing portion 220 is disposed in the encapsulating film casing 200, and the fixing portion 220 is disposed around the avoiding hole 210. The roll core 100 is located inside the packaging film case 200.
Referring to fig. 3 and 4 together, further, the tab structure 300 includes a fixed tab assembly 302 and a connection tab 304. As shown in fig. 4 and fig. 6, the fixed tab assembly 302 includes a tab main body 310 and at least one formed in a first tab colloid 320 on one side of the tab main body 310, the tab main body 310 passes through the connection tab 304 with the winding core 110 is connected, the first tab colloid 320 with the fixed portion 220 is connected, and the first tab colloid 320 is formed with a bare hole 322 corresponding to the avoiding hole 210, so that the bare hole 322 corresponds to and communicates with the avoiding hole 210. The tab main body 310 is exposed in the exposed hole 322, and the exposed hole 322 is correspondingly communicated with the avoiding hole 210, so that the tab main body 310 can be externally connected with the avoiding hole 210 through the exposed hole 322. As shown in fig. 1 and 5, the projection of the fixing portion 220 on the first tab colloid 320 surrounds the exposed hole 322, so that the joint of the fixing portion 220 and the tab colloid surrounds the exposed hole 322, the connection area between the fixing portion 220 and the tab colloid is increased, and the fixing portion 220 and the tab colloid are reliably connected.
In the soft-package button battery 10, the winding core 100 is located in the package film shell 200, and the tab main body 310 of the winding core 100 is exposed through the exposed hole 322, and the first tab colloid 320 is connected with the fixing portion 220, and the exposed hole 322 corresponds to the avoiding hole 210, so that the tab main body 310 is exposed through the exposed hole 322 and the avoiding hole 210. Because fixed part 220 surrounds in naked hole 322 in the projection of utmost point ear colloid, make first utmost point ear colloid 320 only at the position that corresponds with aversion position hole 210 hollows out and form naked hole 322, not only realize the external electrically conductive effect of utmost point ear, and make the area of connection of first utmost point ear colloid 320 and fixed part 220 great, and then make first utmost point ear colloid 320 and fixed part 220 firm connection, the relatively poor problem of button cell's use reliability has been solved, realize metal support elements's such as no steel casing packaging structure simultaneously, make the volume of soft packet of button cell 10 after the shaping less and volume capacity density great.
In order to improve the reliability of the soft-package button battery 10, as shown in fig. 1, in one embodiment, the center line of the avoiding hole 210 is collinear with the center line of the exposed hole 322, so that the avoiding hole 210 and the exposed hole 322 are arranged just opposite to each other, which is beneficial to external connection of the tab main body 310 exposed through the exposed hole 322, thereby avoiding the occurrence of short circuit and improving the reliability of the soft-package button battery 10. It is understood that in other embodiments, the centerlines of the clearance holes 210 and the bare holes 322 are not limited to being collinear, e.g., there is an offset between the centerlines of the clearance holes 210 and the bare holes 322.
As shown in fig. 1, in one embodiment, the diameter of the avoiding hole 210 is larger than the diameter of the exposed hole 322, so that the winding core 110 is better exposed to the position corresponding to the avoiding hole 210 through the exposed hole 322. In this embodiment, the diameter of the avoiding hole 210 is greater than the diameter of the exposed hole 322, and the center line of the avoiding hole 210 is collinear with the center line of the exposed hole 322, so that the avoiding hole 210 and the exposed hole 322 are better arranged in a right-to-right manner, and the external connection of the tab main body 310 exposed through the exposed hole 322 is facilitated.
As shown in fig. 1, in one embodiment, the avoiding hole 210 is a circular hole, so that the avoiding hole 210 has a simple shape and is easy to manufacture and mold. Further, the exposed hole 322 is a circular hole, so that the shape of the exposed hole 322 is simple and easy to manufacture and mold. It is understood that in other embodiments, the avoiding holes 210 are not limited to circular holes, but may be square holes, polygonal holes, or the like.
As shown in fig. 1 and 5, in the present embodiment, the fixing portion 220 is an annular joint surface. It is understood that in other embodiments, the fixing portion 220 is not limited to a connection surface that is annular. Further, the first tab colloid 320 is adhered to the fixing portion 220, so that the first tab colloid 320 is firmly connected with the fixing portion 220. Specifically, the first tab colloid 320 is adhered to the fixing portion 220 through a hot melting process, so that the fixing portion 220 is tightly connected to the first tab colloid 320. Further, a pp glue layer is disposed on the surface of the packaging film casing 200, and the first tab colloid 320 is pp colloid, so that the first tab colloid 320 is adhered to the fixing portion 220 through a hot melting process. In one embodiment, the fixing portion 220 is a circular ring-shaped protrusion structure, so that the fixing portion 220 is better connected with the first tab colloid 320. In the present embodiment, the fixing portion 220 is formed by a stamping process.
In order to firmly connect the fixing portion 220 and the first tab colloid 320, in one embodiment, a plurality of protruding points are disposed on the surface of the fixing portion 220 at intervals, so that the connection area between the fixing portion 220 and the first tab colloid 320 is larger, and the fixing portion 220 and the first tab colloid 320 are firmly connected.
As shown in fig. 1 and 5, in one embodiment, the projection of the avoiding hole 210 on the first tab colloid 320 surrounds the exposed hole 322, so that the inner wall of the avoiding hole 210 better avoids the exposed hole 322, which is beneficial to externally connecting the tab main body 310 through the exposed hole 322 and the avoiding hole 210, thereby avoiding the occurrence of short circuit and improving the reliability of the soft package battery. In this embodiment, the center line of the avoiding hole 210 is collinear with the center line of the exposed hole 322, both the avoiding hole 210 and the exposed hole 322 are circular holes, and the diameter of the avoiding hole 210 is greater than the diameter of the exposed hole 322, so that the winding core 110 is better exposed at the position corresponding to the avoiding hole 210 through the exposed hole 322.
As shown in fig. 1 and 2, further, the tab main body 310 is formed with a protruding portion 312, the protruding portion 312 is inserted into the exposed hole 322, and the protruding portion 312 is exposed through the exposed hole 322, so that the protruding portion 312 is better exposed through the exposed hole 322, so that the tab main body 310 is better exposed and electrically connected with an external element. In the present embodiment, the convex portion 312 is convex toward the side away from the core 110. Further, the boss 312 is formed by a press process, so that the boss 312 has a simple structure and is easily formed.
As shown in fig. 7, in one embodiment, the connection tab 304 has a strip structure, the width of the tab main body 310 in the direction perpendicular to the extension direction of the connection tab 304 is greater than the width of the connection tab 304, and the width of the tab main body 310 in the direction perpendicular to the extension direction of the connection tab 304 is greater than the width of the connection tab 304, so that the connection area between the tab main body 310 and the packaging film shell 200 through the first tab colloid 320 is greater.
As shown in fig. 4, in one embodiment, the tab main body 310 has a circular shape, and the center line of the connection tab 304 passes through the center of the tab main body 310, so that the tab main body 310 has a simple structure, and the connection area between the connection tab 304 and the tab main body 310 is large. In the present embodiment, the end of the connection tab 304 connected to the tab main body 310 is formed with an arc-shaped line so that the end of the connection tab 304 is closely coupled to the circumference of the tab main body 310 and the connection edge line of the connection tab 304 to the tab main body 310 is long.
In one embodiment, the tab main body 310 and the connection tab 304 are integrally formed, so that the connection tab 304 and the tab main body 310 are firmly connected, and the structure of the pouch button cell 10 is more compact. It is to be understood that in other embodiments, the connection tab 304 and the tab body 310 are not limited to being integrally formed. For example, the connection tab 304 and the tab main body 310 are individually formed and connected by welding, so that the connection tab 304 and the tab main body 310 are firmly connected.
As shown in fig. 1, further, the connecting tab 304 is bent to connect the one end of the connecting tab 304 to the sidewall of the winding core 110, and the other end of the connecting tab 304 extends to the end side of the winding core 100 and is connected to the tab main body 310, so that the tab main body 310 is connected to the fixing portion 220, and the tab main body 310 is better disposed in the packaging film shell 200, thereby reducing the space occupied by the winding core 100 and further reducing the volume of the soft-package button battery 10. In the present embodiment, the connection tab 304 is a bent strip structure, so that the connection tab 304 has better bending performance.
As shown in fig. 1 and 6, the fixing tab assembly 302 further includes a second tab colloid 330, and the second tab colloid 330 is formed at least on a side of the tab main body 310 facing away from the first tab colloid 320. The first tab colloid 320 and the second tab colloid 330 are coated on the periphery of the tab main body 310 together. In the embodiment, the first tab colloid 320 and the second tab colloid 330 are coated on the periphery of the tab main body 310 through a hot melting process, so that the first tab colloid 320 and the second tab colloid 330 are heated and pressed to coat the periphery of the tab main body 310, and the first tab colloid 320 is fixedly connected with the packaging film shell 200, thereby preventing the electrolyte in the packaging film shell 200 from leaking, and enabling the first tab colloid 320 and the second tab colloid 330 to be hermetically connected to the surface of the tab main body 310. Further, a connection hole 332 is formed at one side of the second tab colloid 330 departing from the first tab colloid 320, the tab main body 310 is partially exposed in the connection hole 332, and the connection tab 304 is connected to the tab main body 310 through the connection hole 332, so that the connection tab 304 is connected to the tab main body 310. In the present embodiment, the connection tab 304 is welded and fixed to the tab main body 310, so that the connection tab 304 and the tab main body 310 are firmly connected and the connection tab 304 and the tab main body 310 are reliably electrically connected.
It is understood that in other embodiments, the side of the second tab gel 330 facing away from the first tab gel 320 need not be formed with the attachment holes 332. As shown in fig. 8 and 9, in one embodiment, the tab assembly 302 further includes a second tab gel 330, wherein the second tab gel 330 is formed on at least one side of the tab body 310 facing away from the first tab gel 320. The end of the connection tab 304 remote from the winding core 110 is attached to the tab body 310. The first tab colloid 320 and/or the second tab colloid 330 are/is coated on the position where the connection tab 304 is connected to the tab main body 310, and the first tab colloid 320 and the second tab colloid 330 are coated on the periphery of the tab main body 310 together, so that the tab main body 310 is tightly coated and connected by the first tab colloid 320 and the second tab colloid 330 together, and the position where the connection tab 304 is connected to the tab main body 310 is tightly coated, so as to prevent the electrolyte in the packaging film shell 200 from leaking out of the packaging film shell 200. In this embodiment, the end of the tab 304 far from the winding core 110 is connected to the periphery of the tab main body 310, the first tab colloid 320 and the second tab colloid 330 jointly cover the portion of the tab main body 310 to which the tab 304 is connected, and the first tab colloid 320 and the second tab colloid 330 jointly cover the periphery of the tab main body 310. It is to be understood that in other embodiments, the end of the connection tab 304 remote from the jellyroll 110 is not limited to being connected to the peripheral edge of the tab body 310. For example, the end of the tab 304 remote from the winding core 110 is attached to the side of the tab body 310 adjacent to the first tab gel 320. As another example, the end of the tab 304 distal to the jellyroll 110 is attached to a side of the tab body 310 adjacent to the second tab gel 330.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. because the winding core 100 is located in the packaging film shell 200, the tab main body 310 of the winding core 100 is exposed through the exposed hole 322, and because the first tab colloid 320 is connected with the fixing part 220, the exposed hole 322 corresponds to the avoiding hole 210, the tab main body 310 is exposed through the exposed hole 322 and the avoiding hole 210;
2. because fixed part 220 surrounds in naked hole 322 in the projection of utmost point ear colloid, make first utmost point ear colloid 320 only at the position that corresponds with aversion position hole 210 hollows out and form naked hole 322, not only realize the external electrically conductive effect of utmost point ear, and make the area of connection of first utmost point ear colloid 320 and fixed part 220 great, and then make first utmost point ear colloid 320 and fixed part 220 firm connection, the relatively poor problem of button cell's use reliability has been solved, realize metal support elements's such as no steel casing packaging structure simultaneously, make the volume of soft packet of button cell 10 after the shaping less and volume capacity density great.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A tab structure is used for being electrically connected with a winding core and an encapsulation film shell respectively, a position avoiding hole is formed in the encapsulation film shell, and a fixing part surrounding the position avoiding hole is arranged in the encapsulation film shell; fixed utmost point ear subassembly include utmost point ear main part and at least the shaping in the first utmost point ear colloid of utmost point ear main part one side, utmost point ear main part be used for passing through connect utmost point ear with roll up the core and connect, first utmost point ear colloid be used for with the fixed part is connected, just first utmost point ear colloid be formed with be used for with keep away the corresponding naked hole in position hole, utmost point ear main part expose in naked hole, the fixed part is in the projection of first utmost point ear colloid encircle in naked hole.
2. The tab structure of claim 1 wherein the connection tab is a strip structure.
3. The tab structure as claimed in claim 2, wherein the tab main body has a width in a direction perpendicular to the extending direction of the connection tab greater than a width of the connection tab.
4. The tab structure of claim 1, wherein the open holes are round holes.
5. The tab structure as claimed in any one of claims 1 to 4, wherein the fixed tab assembly further comprises a second tab gel molded at least on a side of the tab body facing away from the first tab gel; the first tab colloid and the second tab colloid are coated on the periphery of the tab main body together; one side of the second lug colloid, which deviates from the first lug colloid, is formed with a connecting hole, the lug main body part is exposed in the connecting hole, and the connecting lug passes through the connecting hole and is connected with the lug main body.
6. The tab structure as claimed in claim 5, wherein the coupling hole is a circular hole.
7. The tab structure as claimed in any one of claims 1 to 4, wherein the fixed tab assembly further comprises a second tab gel molded at least on a side of the tab body facing away from the first tab gel; the connection utmost point ear keep away from the end connection of rolling up the core in utmost point ear main part, first utmost point ear colloid and/or second utmost point ear colloid cladding in connect utmost point ear connect in the position of utmost point ear main part, first utmost point ear colloid with the common cladding of second utmost point ear colloid in the periphery of utmost point ear main part.
8. A soft package button battery is characterized by comprising a winding core, an encapsulation film shell and a tab structure as claimed in any one of claims 1 to 7, wherein the tab structure is electrically connected with the winding core and the encapsulation film shell respectively; roll up the core and be located in the encapsulation membrane shell, utmost point ear main part passes through connect utmost point ear with roll up the core and connect, first utmost point ear colloid with the fixed part is connected, just first utmost point ear colloid be formed with keep away the corresponding naked hole in position hole, the fixed part is in the projection of first utmost point ear colloid encircle in naked hole.
9. The pouch button cell according to claim 8, wherein a centerline of the clearance hole is collinear with a centerline of the open hole.
10. The soft-package button battery according to claim 9, wherein the clearance hole is a round hole;
the diameter of the avoiding hole is larger than that of the exposed hole;
the fixing part is an annular connecting surface;
the surface of the fixed part is provided with a plurality of convex points which are distributed at intervals;
the projection of the avoiding hole on the lug colloid surrounds the exposed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192793.7U CN215008505U (en) | 2021-01-22 | 2021-01-22 | Tab structure and soft-packaged button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192793.7U CN215008505U (en) | 2021-01-22 | 2021-01-22 | Tab structure and soft-packaged button battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215008505U true CN215008505U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120192793.7U Active CN215008505U (en) | 2021-01-22 | 2021-01-22 | Tab structure and soft-packaged button battery |
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| CN (1) | CN215008505U (en) |
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- 2021-01-22 CN CN202120192793.7U patent/CN215008505U/en active Active
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