CN209675391U - A kind of tab of power battery and the connection structure of cover board - Google Patents
A kind of tab of power battery and the connection structure of cover board Download PDFInfo
- Publication number
- CN209675391U CN209675391U CN201920822376.9U CN201920822376U CN209675391U CN 209675391 U CN209675391 U CN 209675391U CN 201920822376 U CN201920822376 U CN 201920822376U CN 209675391 U CN209675391 U CN 209675391U
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- China
- Prior art keywords
- tab
- cover board
- arcuate segment
- welding
- screening glass
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses the connection structures of a kind of tab of power battery and cover board; including connection sheet and screening glass; the connection sheet includes sequentially connected rectangular cover board welding section, arcuate segment A and rectangular tab welding area; arcuate segment B is provided among the tab welding area; the arcuate segment B and arcuate segment A is in 90 degree; the middle position of the screening glass is equipped with arcuate segment C, and the screening glass is corresponding with tab welding area.The tab of at least two power battery is symmetrically placed on the two sides of tab welding area arcuate segment B; screening glass is placed on above tab; tab is clipped between tab welding area and screening glass at this time; connection sheet, tab and screening glass are electrically connected by welding; the cover board welding section of connection sheet is corresponding with cover board; connection sheet and cover board are electrically connected by welding, to realize being electrically connected for tab and cover board.The cover board of the utility model and the weld strength of tab are high, easy to process.
Description
Technical field
The utility model belongs to battery technology field, and in particular to a kind of tab of power battery and the connection knot of cover board
Structure.
Background technique
Current driving force battery mostly uses greatly multi-winding-core structure, one end and pole of this multireel cored structure switching piece in assembling
Ear welding, the other end and pole weld, and there are electrode lug folding procedure after switching piece and tab welding, need to make switching piece with
The position of tab welding by tab double flat inwardly, while switching piece also double flat and form switching piece and tab mutually
It mutually sandwiches, therefore the bending performance of switching piece and tab is required very high.Because being easy to appear in switching piece bending part tired
Labor crackle is even broken, to influence the service life of switching piece.It is bent twice in addition, tab passes through, the tab far from switching piece
Position be easy pullled in the process of bending, may cause tab in the broken.In addition, due to the bending of switching piece
180 degree and tab, so that flow chart increases, increase production cost, reduce production efficiency by bending twice.
Patent CN201620033989 discloses a kind of secondary cell comprising top cover and at least one naked battery core.Its
In, secondary cell further include: switching piece.Switching piece is parallel with top cover and is located at the inside of the thickness direction of top cover, switching piece
It is parallel to the length direction of top cover, the width direction for being transversely parallel to top cover of switching piece, comprising: tab welding portion uses
In with the corresponding tab welding of naked battery core；And pole weld part, along the longitudinally connected in tab welding portion of switching piece, and it is used for
It is welded with the corresponding pole of top cover, corresponding pole tab corresponding with naked battery core is electrically connected.Wherein, switching piece is in electricity
In connection procedure, switching piece is without bending, and this completely eliminates the bending performance demands to switching piece, to eliminate switching piece
The risk that the clast and switching piece bending fatigue that bending fatigue generates cause switching piece to be broken.But the secondary cell still remains
Disadvantage: 1, the connection sheet of the battery is flat, and the weld strength of tab, cover board and connection sheet utility model is low, and battery is caused to make
With service life reduction and higher cost；2, the tab of the battery sandwiches practical new in the identical tab welding portion of two shape sizes
Type, two tab welding portions and pole weld part are integrated, and difficulty of processing is big, weld strength is low.
Utility model content
The purpose of this utility model is to provide the connection structures of a kind of tab of power battery and cover board, above-mentioned to solve
It proposes that the weld strength between the tab, cover board and switching piece of existing battery is low in background technique, battery is caused to drop
Low problem.
To achieve the above object, the utility model adopts the technical scheme that
A kind of tab of power battery and the connection structure of cover board, which is characterized in that described including connection sheet and screening glass
Connection sheet includes sequentially connected rectangular cover board welding section, arcuate segment A and rectangular tab welding area, among the tab welding area
Arcuate segment B, the arcuate segment B and arcuate segment A are provided in 90 degree, the middle position of the screening glass is equipped with arcuate segment C, institute
It is corresponding with tab welding area to state screening glass.
The arcuate segment B extends to the edge in tab welding area far from one end of cover board welding section, and the arcuate segment B is close
One end of cover board welding section is 2 ~ 5mm at a distance from arcuate segment A.
The width of the screening glass is consistent with tab welding area, and the length of the screening glass is less than or equal to tab welding area
Length.
The arcuate segment C runs through entire connection sheet along the length direction of connection sheet.
The radius of the arcuate segment C is more than or equal to the radius of arcuate segment B.
Utility model works mode: the tab of at least two power battery is symmetrically placed on tab welding area arcuate segment B
Two sides, screening glass is placed on above tab, tab is clipped between tab welding area and screening glass at this time, will be even by welding
Contact pin, tab and screening glass electrical connection, the cover board welding section of connection sheet is corresponding with cover board, by welding connection sheet and cover board
Electrical connection, to realize being electrically connected for tab and cover board.
The technical effect and advantage of the utility model:
1, the utility model among the cover board welding section and tab welding area of connection sheet by being arranged arcuate segment A, tab
After welding, welding deformation exists only in tab welding area, and welding deformation will not influence cover board welding section, to improve cover board welding
Intensity；
2, tab welding is divided into two parts, tab weldering by the way that arcuate segment B is arranged in tab welding area by the utility model
It will not influence each other when connecing, improve tab welding intensity；
3, the utility model is by being arranged individual screening glass, and screening glass is equipped with arcuate segment C, not only easy to process,
And improve tab welding intensity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure: 1, connection sheet 2, screening glass 11, cover board welding section 12, arcuate segment A 13, tab welding area 14, arch
Section B 21, arcuate segment C.
Specific embodiment
The weld strength between tab, cover board and switching piece in order to solve existing battery is low, causes battery
The problem of reduction.The utility model proposes the connection structures of a kind of tab of power battery and cover board.
The utility model is further described below with reference to diagram.
As shown in Figure 1, a kind of tab of power battery and the connection structure of cover board, including connection sheet (1) and screening glass
(2), the connection sheet (1) includes sequentially connected rectangular cover board welding section (11), arcuate segment A and rectangular tab welding area
(13), is provided with arcuate segment B(14 among the tab welding area (13)), the arcuate segment B(14) and arcuate segment A in 90 degree,
The middle position of the screening glass (2) is equipped with arcuate segment C(21), the screening glass (2) is corresponding with tab welding area (13).
Preferably, the arcuate segment B(14) far from the one end of cover board welding section (11) extend to tab welding area (13)
Edge, the arcuate segment B(14) close to cover board welding section (11) one end with arcuate segment A at a distance from be 2 ~ 5mm.
Preferably, unanimously, the length of the screening glass (2) is small for the width of the screening glass (2) and tab welding area (13)
In the length for being equal to tab welding area (13).
Preferably, the arcuate segment C(21) radius be more than or equal to arcuate segment B(14) radius.
Utility model works mode: the tab of at least two power battery is symmetrically placed on tab welding area (13) arch
Shape section B(14) two sides, screening glass (2) is placed on above tab, tab is clipped in tab welding area (13) and screening glass at this time
(2) connection sheet (1), tab and screening glass (2) are electrically connected, by the cover board welding section of connection sheet (1) by utility model by welding
(11) corresponding with cover board, by welding by connection sheet (1) and cover board electrical connection, to realize being electrically connected for tab and cover board.
The technical effect and advantage of the utility model:
1, the utility model passes through the setting arch among the cover board welding section (11) of connection sheet (1) and tab welding area (13)
Shape section A, after tab welding, welding deformation exists only in tab welding area (13), and welding deformation will not influence cover board welding section
(11), to improve cover board weld strength；
2, the utility model is by being arranged arcuate segment B(14 in tab welding area (13)), tab welding area (13) are divided into
Two parts, when tab welding, will not influence each other, and improve tab welding intensity；
3, the utility model is by being arranged individual screening glass (2), and screening glass (2) is equipped with arcuate segment C(21), not only
It is easy to process, and improve tab welding intensity.
Claims (5)
1. a kind of tab of power battery and the connection structure of cover board, which is characterized in that including connection sheet (1) and screening glass (2),
The connection sheet (1) includes sequentially connected rectangular cover board welding section (11), arcuate segment A and rectangular tab welding area (13), institute
State and be provided with arcuate segment B(14 among tab welding area (13)), the arcuate segment B(14) and arcuate segment A in 90 degree, the guarantor
The middle position of bluff piece (2) is equipped with arcuate segment C(21), the screening glass (2) is corresponding with tab welding area (13).
2. a kind of tab of power battery according to claim 1 and the connection structure of cover board, which is characterized in that the arch
Shape section B(14) one end far from cover board welding section (11) extends to the edges of tab welding area (13), the arcuate segment B(14) lean on
One end of nearly cover board welding section (11) is 2 ~ 5mm at a distance from arcuate segment A.
3. a kind of tab of power battery according to claim 1 and the connection structure of cover board, which is characterized in that the guarantor
Unanimously, the length of the screening glass (2) is less than or equal to tab welding area (13) for the width of bluff piece (2) and tab welding area (13)
Length.
4. a kind of tab of power battery according to claim 1 and the connection structure of cover board, which is characterized in that the arch
Shape section C(21) along connection sheet (1) length direction run through entire connection sheet (1).
5. a kind of tab of power battery according to claim 1 and the connection structure of cover board, which is characterized in that the arch
Shape section C(21) radius be more than or equal to arcuate segment B(14) radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822376.9U CN209675391U (en) | 2019-06-03 | 2019-06-03 | A kind of tab of power battery and the connection structure of cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822376.9U CN209675391U (en) | 2019-06-03 | 2019-06-03 | A kind of tab of power battery and the connection structure of cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209675391U true CN209675391U (en) | 2019-11-22 |
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ID=68575586
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920822376.9U Active CN209675391U (en) | 2019-06-03 | 2019-06-03 | A kind of tab of power battery and the connection structure of cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209675391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933883A (en) * | 2020-08-06 | 2020-11-13 | 东莞市万连实业有限公司 | Adapter sheet for high-capacity battery and preparation method thereof |
-
2019
- 2019-06-03 CN CN201920822376.9U patent/CN209675391U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111933883A (en) * | 2020-08-06 | 2020-11-13 | 东莞市万连实业有限公司 | Adapter sheet for high-capacity battery and preparation method thereof |
| CN111933883B (en) * | 2020-08-06 | 2022-10-14 | 东莞市万连实业有限公司 | Adapter sheet for high-capacity battery and preparation method thereof |
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