CN219832958U - Lug connection structure and battery thereof - Google Patents
Lug connection structure and battery thereof Download PDFInfo
- Publication number
- CN219832958U CN219832958U CN202320560005.4U CN202320560005U CN219832958U CN 219832958 U CN219832958 U CN 219832958U CN 202320560005 U CN202320560005 U CN 202320560005U CN 219832958 U CN219832958 U CN 219832958U
- Authority
- CN
- China
- Prior art keywords
- tab
- adhesive
- connection structure
- connecting part
- electrode tab
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005476 soldering Methods 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012797 qualification Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005621 ferroelectricity Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a tab connection structure and a battery thereof, wherein the tab connection structure comprises: the electrode tab comprises an exposed welding part, an electrode tab adhesive connecting part and a pole piece connecting part, wherein the exposed welding part, the electrode tab adhesive connecting part and the pole piece connecting part are sequentially connected, and the electrode tab adhesive is connected with the electrode tab adhesive connecting part; the exposed welding part is provided with a frosted connecting surface, the lug adhesive connecting part is provided with an adhesion convex grain surface, the adhesion convex grain surface is provided with a transverse pressing groove and a longitudinal groove, and the transverse pressing groove is mutually communicated with the longitudinal groove. According to the tab connection structure, the frosted connection surface is arranged at the tab, so that the contact surface of tab welding is increased, the success rate of tab soldering tin is improved, the attachment surface is arranged at the tab adhesive attachment position, and the transverse and longitudinal pressing grooves are arranged on the attachment surface, so that the adhesive force of tab adhesive is enhanced, and the problem of falling off of tab adhesive is avoided.
Description
Technical Field
The utility model relates to the technical field of battery production, in particular to a tab connection structure and a battery thereof.
Background
In the existing tab connection structure, the connection part of the tab and an external terminal product is usually a smooth surface, and the smooth surface of the tab can undergo oxidation reaction after the tab contacts with external air, so that the connection end of the tab is welded to fail, and the terminal product is subjected to no-current phenomenon after being welded, so that the qualification rate of the product is reduced. Meanwhile, when the tab glue is connected with the tab, the adhesive force is lower due to the fact that the connecting part of the tab is a smooth surface, so that the tab glue is separated, and the qualification rate of production and processing is further reduced.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a tab connecting structure and a battery thereof, wherein the tab connecting structure can be used for improving the conductivity stability of a tab connecting end and the adhesive force of tab adhesive.
The aim of the utility model is realized by the following technical scheme:
a tab connection structure, comprising: the electrode tab comprises an exposed welding part, an electrode tab adhesive connecting part and a pole piece connecting part, and the exposed welding part, the electrode tab adhesive connecting part and the pole piece connecting part are sequentially connected; the tab adhesive is connected with the tab adhesive connecting part; the exposed welding part is provided with a frosted connecting surface, the lug adhesive connecting part is provided with an adhesion convex grain surface, the adhesion convex grain surface is provided with a transverse pressing groove and a longitudinal groove, and the transverse pressing groove is mutually communicated with the longitudinal groove.
In one embodiment, the tab connection structure is a nickel strap tab.
In one embodiment, in the tab connection structure, the transverse pressing groove is perpendicular to the longitudinal groove.
In one embodiment, the tab connection structure is provided with a plurality of transverse pressing grooves, and each transverse pressing groove is parallel to each other.
In one embodiment, in the tab connection structure, a plurality of longitudinal grooves are provided, and each of the longitudinal grooves is parallel to each other.
The battery comprises the tab connection structure and a battery winding core, wherein the battery winding core is connected with the pole piece connection part.
Compared with the prior art, the utility model has at least the following advantages:
1. according to the tab connection structure, the frosted connection surface is arranged at the tab, so that the contact surface of tab welding is increased, and the success rate of tab soldering is improved.
2. According to the tab connection structure, the attachment surface is arranged at the tab adhesive attachment position, and the transverse and longitudinal pressing grooves are formed in the attachment surface, so that the adhesive force of the tab adhesive is enhanced, and the problem of falling of the tab adhesive is avoided.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described.
FIG. 1 is a schematic view of a tab connection structure according to an embodiment of the present utility model;
fig. 2 is a schematic view of a battery according to an embodiment of the present utility model.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings.
Referring to fig. 1, a tab connection structure 10 includes: the tab 100 and the tab adhesive 200, the tab includes an exposed welding portion 110, a tab adhesive connecting portion 120 and a pole piece connecting portion 130, the exposed welding portion 110, the tab adhesive connecting portion 120 and the pole piece connecting portion 130 are sequentially connected, and the tab adhesive 200 is connected with the tab adhesive connecting portion 120; the exposed welding part 110 is provided with a frosted connection surface 111, the tab adhesive connection part 120 is provided with an attaching convex grain surface 121, the attaching convex grain surface 121 is provided with a transverse pressing groove 122 and a longitudinal groove 123, and the transverse pressing groove 122 is communicated with the longitudinal groove 123.
It should be noted that, the metal surface of the tab 100 is exposed to air to oxidize the metal, and the metal surface of the oxidized tab 100 cannot be welded with the terminal product, for example, after metal oxide welding, the metal oxide is different from the melting point of the metal surface, so that the welding is insufficient, some connecting portions are not contacted with the soldering tin and are not connected with the terminal product, and further, no current is generated in the terminal product, so that the use rate of the terminal product is reduced. In order to solve the technical problem, the exposed welding part 110 of the tab 100 is rolled by adopting a corner press roller, namely, the exposed welding part 110 of the tab 100 is rolled, so that the exposed welding part 110 of the tab 100 forms a frosted connection surface 111 through the corner press roller, the frosted connection surface 111 can enable the oxidation degree of the metal surface of the tab 100 to be different, and the tab can be better combined with soldering tin, thereby improving the qualification rate of soldering tin, further improving the welding success rate of a terminal product and the tab 100, avoiding waste of defective products and reducing the production cost; for another example, the tab adhesive connection portion 120 is provided with the adhesion convex grain surface 121, so that the adhesion stability of the tab adhesive 200 can be further improved by increasing the surface friction force of the tab adhesive connection portion 120, and the tab adhesive 200 is prevented from falling off from the tab adhesive connection portion 120, thereby improving the qualification rate of products.
In one embodiment, the tab is a nickel strip tab, so that the nickel has good chemical characteristics and high ductility, and the nickel used as the tab material can improve the adaptability of the tab in the use process by changing the shape, generating plastic deformation and not generating fracture of the metal under the action of tensile stress. Meanwhile, the ferroelectricity of nickel can be better combined with tin, so that the success rate of soldering tin can be improved. Furthermore, the production cost of nickel is very low, and the nickel strap tab is made of nickel, so that the production cost is reduced.
As shown in fig. 1, in one embodiment, a plurality of transverse pressing grooves 122 and longitudinal grooves 123 are provided, and each transverse pressing groove 122 is disposed parallel to each other; the longitudinal grooves 123 are arranged in parallel with each other; the transverse pressing groove 122 and the longitudinal groove 123 are vertically arranged.
It should be noted that, on the basis of setting the adhesion convex grain surface 121 on the tab adhesive connection portion 120, a transverse groove 122 and a longitudinal groove 123 are further provided, and by setting the transverse groove 122 and the longitudinal groove 123, the filling area of the tab adhesive 200 on the tab adhesive connection portion 120 can be increased, so that the surface of the tab adhesive connection portion 120 is more fully attached to the tab adhesive 200, and thus, the tab adhesive 200 can be adhered more stably.
As shown in fig. 2, in one embodiment, a battery includes a tab connection structure and a battery winding core 300, where the battery winding core 300 is connected to a pole piece connection portion.
It should be noted that, the thickness of the tab is thinner, the tab is easy to be damaged by using the traditional welding mode with the battery winding core 300, the welding part can be effectively protected by using ultrasonic welding, the ultrasonic frequency is converted into mechanical vibration energy by converting the ultrasonic frequency, so that the molecules of the welding part are mutually penetrated, the tab and the battery winding core can be welded together, and further, the pollution can be reduced by adopting ultrasonic welding, and the waste of welding materials is avoided.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (6)
1. A tab connection structure is characterized by comprising: the electrode tab comprises an exposed welding part, an electrode tab adhesive connecting part and a pole piece connecting part, wherein the exposed welding part, the electrode tab adhesive connecting part and the pole piece connecting part are sequentially connected, and the electrode tab adhesive is connected with the electrode tab adhesive connecting part;
the exposed welding part is provided with a frosted connecting surface, the lug adhesive connecting part is provided with an adhesion convex grain surface, the adhesion convex grain surface is provided with a transverse pressing groove and a longitudinal groove, and the transverse pressing groove is mutually communicated with the longitudinal groove.
2. The tab connection structure of claim 1, wherein the tab is a nickel strap tab.
3. The tab connection structure of claim 1, wherein the transverse indent is disposed perpendicular to the longitudinal groove.
4. The tab connection structure according to claim 2, wherein a plurality of the lateral pressing grooves are provided, each of the lateral pressing grooves being disposed in parallel with each other.
5. The tab connection structure according to claim 2, wherein a plurality of the longitudinal grooves are provided, each of the longitudinal grooves being disposed in parallel with each other.
6. A battery comprising the tab connection structure of any one of claims 1-5, and further comprising a battery winding core connected to the pole piece connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320560005.4U CN219832958U (en) | 2023-03-20 | 2023-03-20 | Lug connection structure and battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320560005.4U CN219832958U (en) | 2023-03-20 | 2023-03-20 | Lug connection structure and battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832958U true CN219832958U (en) | 2023-10-13 |
Family
ID=88247101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320560005.4U Active CN219832958U (en) | 2023-03-20 | 2023-03-20 | Lug connection structure and battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832958U (en) |
-
2023
- 2023-03-20 CN CN202320560005.4U patent/CN219832958U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |