CN208596745U - The connection structure of power battery top cover and battery core - Google Patents
The connection structure of power battery top cover and battery core Download PDFInfo
- Publication number
- CN208596745U CN208596745U CN201821138694.5U CN201821138694U CN208596745U CN 208596745 U CN208596745 U CN 208596745U CN 201821138694 U CN201821138694 U CN 201821138694U CN 208596745 U CN208596745 U CN 208596745U
- Authority
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- China
- Prior art keywords
- tab
- top cover
- battery core
- pole
- connection
- Prior art date
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- 239000012530 fluid Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000002788 crimping Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000001737 promoting Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000002860 competitive Effects 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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[Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000000243 solution 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
Abstract
The utility model belongs to power battery technology field, more particularly to a kind of connection structure of power battery top cover and battery core, including top cover and battery core, the top cover is provided with the first pole and the second pole, the battery core is provided with the first tab and the second tab, first tab is electrically connected by the first connection sheet and first pole, second tab is electrically connected by the second connection sheet and second pole, and the end corner of first tab and second tab is respectively set to chamfering structure.Compared with the prior art, the utility model is by being respectively set to chamfering structure for the end corner of tab, in this way it is possible to prevente effectively from the problem of tab corner touches the fusing structure of connection sheet and fusing structure is caused to fail, to improve the reliability of connection and ensure the security performance of battery, the scrappage of battery core is reduced.
Description
Technical field
The utility model belongs to the connection knot in power battery technology field more particularly to a kind of power battery top cover and battery core
Structure.
Background technique
It is the weight for further promoting its competitive advantage on the market currently, promoting the security performance of lithium-ion-power cell
Want index.
In the prior art, the connection of top cover and battery core is generally attached using connection sheet, that is, is arranged on top cover just
Pole and the anode ear that battery core is arranged in are welded with aluminium connection sheet respectively, and the negative terminal on top cover is arranged in and is arranged and exists
The negative electrode lug of battery core is welded with copper connection sheet respectively.
However, find in actual production, since current cell polar ear end corner is generally right-angle structure, when its with
After connection sheet welding, tab corner is easy to the fusing structure (Fuse) of touching aluminium connection sheet, to cause Fuse timely
Fusing, and then the security performance of battery is influenced, and cause scrapping for battery core.
Utility model content
The purpose of this utility model is that: in view of the deficiencies of the prior art, and it is reliable and highly-safe to provide a kind of connection
Power battery top cover and battery core connection structure.
To achieve the goals above, the utility model uses following technical scheme:
A kind of connection structure of power battery top cover and battery core, including top cover and battery core, the top cover are provided with the first pole
Column and the second pole, the battery core are provided with the first tab and the second tab, and first tab passes through the first connection sheet and institute
The electric connection of the first pole is stated, second tab is electrically connected by the second connection sheet and second pole, and described first
The end corner of tab and second tab is respectively set to chamfering structure.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, the chamfering knot
Structure rectilinear angle for rounding arc angle and/or.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, the battery core
Quantity is set as multiple, and multiple first tabs are divided into two groups of two sides for being electrically connected at the first connection sheet respectively, Duo Ge
Two tabs are divided into two groups of two sides for being electrically connected at the second connection sheet respectively.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, described first connects
Contact pin and second connection sheet are in " mountain " character form structure.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, described first connects
Contact pin includes the first tab interconnecting piece and protrudes out the first pole interconnecting piece formed by one end of the first tab interconnecting piece；Described
Two connection sheets include the second tab interconnecting piece and protrude out the second pole interconnecting piece formed by one end of the second tab interconnecting piece.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, first pole
Fusing structure is provided between ear interconnecting piece and the first pole interconnecting piece.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, the fusing knot
Structure includes the insurance hole or insurance chamber for being set to the first pole interconnecting piece, and is coated on the insurance hole or insures exhausted outside chamber
Edge strengthening layer；The insurance hole is blind hole or through-hole, and the insurance chamber is spheroid chamber, cylinder body cavity or cube chamber.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, first pole
Ear interconnecting piece is provided with ventilative through hole, and the second tab interconnecting piece is provided with fluid injection through-hole.Wherein, in the first tab interconnecting piece
Ventilative through hole is set, primarily on corresponding top cover rotating sheet air hole, in order to can be timely when cell malfunctions
Ventilative pressure release, guarantees the security performance of battery；And fluid injection through-hole is set primarily to corresponding top cover in the second tab interconnecting piece
On liquid injection hole, in order to battery carry out fluid injection.
It further include first as the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core
Compressing piece and the second compressing piece, first compressing piece are set to first tab, second pressure by welding
Contact pin is set to second tab by welding.Compressing piece is welded by the link position in tab and connection sheet,
The bonding strength and reliability of the connection structure can be effectively increased in this way, so that tab be avoided to be easy to appear fracture in bending
Problem improves the security performance of battery.
As the preferred embodiment of power battery top cover described in the utility model and the connection structure of battery core, first pressure
The corner of contact pin and second compressing piece is disposed as rounding arc angle.Rounding arc angle structure is set by the corner of compressing piece,
The corner angle of compressing piece or burr can be effectively prevent to scrape the tab of damage bending in this way, avoid tab damage.
The utility model has the beneficial effects that: a kind of connection structure of power battery top cover and battery core of the utility model,
Including top cover and battery core, the top cover is provided with the first pole and the second pole, and the battery core is provided with the first tab and second
Tab, first tab are electrically connected by the first connection sheet and first pole, and second tab connects by second
Contact pin and second pole are electrically connected, and the end corner of first tab and second tab is respectively set to chamfering
Structure.Compared with the prior art, the utility model is by being respectively set to chamfering structure for the end corner of tab, in this way can be with
It effectively avoids the problem that the fusing structure of tab corner touching connection sheet and fusing structure is caused to fail, so that improves connection can
By property and the security performance for ensuring battery, the scrappage of battery core is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1- top cover；2- battery core；The first tab of 21-；The second tab of 22-；The first connection sheet of 3-；The first tab of 31- connects
Socket part；32- the first pole interconnecting piece；33- fusing structure；The second connection sheet of 4-；41- the second tab interconnecting piece；The second pole of 42-
Interconnecting piece；5- ventilative through hole；6- fluid injection through-hole；The first compressing piece of 7-；The second compressing piece of 8-.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiment and specification
Attached drawing is described in further detail the utility model and its advantages, but the embodiments of the present invention is not limited to
This.
As shown in Figure 1, a kind of connection structure of power battery top cover and battery core, including top cover 1 and battery core 2, top cover 1 are arranged
There are the first pole and the second pole, battery core 2 is provided with the first tab 21 and the second tab 22, and the first tab 21 passes through the first connection
Piece 3 and the first pole are electrically connected, and the second tab 22 is electrically connected by the second connection sheet 4 and the second pole, the first tab 21
Chamfering structure, chamfering structure rectilinear angle for rounding arc angle and/or are respectively set to the end corner of the second tab 22.
Wherein, the first connection sheet 3 includes the first tab interconnecting piece 31 and protrudes out shape by one end of the first tab interconnecting piece 31
At the first pole interconnecting piece 32；Second connection sheet 4 is including the second tab interconnecting piece 41 and by the one of the second tab interconnecting piece 41
End protrudes out the second pole interconnecting piece 42 to be formed.When the quantity of battery core 2 is single, the first tab 21 is electrically connected at the first pole
Ear interconnecting piece 31, the second tab 22 are electrically connected at the second tab interconnecting piece 41；When the quantity of battery core 2 is multiple (two or more)
When, multiple first tabs 21 are divided into two groups of two sides for being electrically connected at the first tab interconnecting piece 31 respectively, multiple second poles
Ear 22 is divided into two groups of two sides for being electrically connected at the second tab interconnecting piece 41 respectively.
In an embodiment of power battery top cover according to the present utility model and the connection structure of battery core, the first connection sheet
3 and second connection sheet 4 be in " mountain " character form structure.
In an embodiment of power battery top cover according to the present utility model and the connection structure of battery core, the first tab connects
Fusing structure 33 is provided between socket part 31 and the first pole interconnecting piece 32；Fusing structure 33 includes being set to the connection of the first pole
The insurance hole or insurance chamber in portion 32, and be coated on insurance hole or insure the insulation strengthening layer outside chamber；Insurance hole is blind hole or leads to
Hole, insurance chamber are spheroid chamber, cylinder body cavity or cube chamber.
In an embodiment of power battery top cover according to the present utility model and the connection structure of battery core, the first tab connects
Socket part 31 is provided with ventilative through hole 5, and the second tab interconnecting piece 41 is provided with fluid injection through-hole 6.Wherein, in the first tab interconnecting piece 31
Ventilative through hole 5 is set, for corresponding to the air hole of rotating sheet on top cover 1, in order to breathe freely in time when cell malfunctions
Pressure release guarantees the security performance of battery；And it is used to correspond to the note on top cover 1 in the second tab interconnecting piece 41 setting fluid injection through-hole 6
Fluid apertures, in order to carry out fluid injection to battery.
It further include first in an embodiment of power battery top cover according to the present utility model and the connection structure of battery core
Compressing piece 7 and the second compressing piece 8, the first compressing piece 7 are set to the first tab 21 by welding, and the second compressing piece 8 is logical
The mode for crossing welding is set to the second tab 22；Wherein, the mode of welding can be ultrasonic bonding or laser welding.By
Tab and the link position of connection sheet weld compressing piece, can effectively increase the bonding strength of the connection structure and reliable in this way
Property, so that tab be avoided to be easy to appear breakage problem in bending, improve the security performance of battery.
In an embodiment of power battery top cover according to the present utility model and the connection structure of battery core, the first compressing piece
7 and second the corner of compressing piece 8 be disposed as rounding arc angle.Rounding arc angle structure, such energy are set by the corner of compressing piece
It enough effectively prevent the corner angle of compressing piece or burr to scrape the tab that damage is bent, avoids tab damage.
Compared with the prior art, the utility model is by being respectively set to chamfering structure for the end corner of tab, in this way
It is possible to prevente effectively from the problem of tab corner touches the fusing structure of connection sheet and fusing structure is caused to fail, to improve connection
Reliability and ensure the security performance of battery, reduce the scrappage of battery core.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (9)
1. the connection structure of power battery top cover and battery core, including top cover and battery core, the top cover is provided with the first pole and
Two poles, the battery core are provided with the first tab and the second tab, and first tab passes through the first connection sheet and described first
Pole is electrically connected, and second tab is electrically connected by the second connection sheet and second pole, it is characterised in that: described
The end corner of first tab and second tab is respectively set to chamfering structure.
2. the connection structure of power battery top cover and battery core according to claim 1, it is characterised in that: the chamfering structure
For rounding arc angle and/or rectilinear angle.
3. the connection structure of power battery top cover and battery core according to claim 1, it is characterised in that: the number of the battery core
Amount is set as multiple, and multiple first tabs are divided into two groups of two sides for being electrically connected at the first connection sheet respectively, and multiple second
Tab is divided into two groups of two sides for being electrically connected at the second connection sheet respectively.
4. the connection structure of power battery top cover and battery core according to claim 1, it is characterised in that: first connection
Piece and second connection sheet are in " mountain " character form structure.
5. the connection structure of power battery top cover and battery core according to claim 1, it is characterised in that: first connection
Piece includes the first tab interconnecting piece and protrudes out the first pole interconnecting piece formed by one end of the first tab interconnecting piece；Described second
Connection sheet includes the second tab interconnecting piece and protrudes out the second pole interconnecting piece formed by one end of the second tab interconnecting piece.
6. the connection structure of power battery top cover and battery core according to claim 5, it is characterised in that: first tab
Fusing structure is provided between interconnecting piece and the first pole interconnecting piece.
7. the connection structure of power battery top cover and battery core according to claim 5, it is characterised in that: first tab
Interconnecting piece is provided with ventilative through hole, and the second tab interconnecting piece is provided with fluid injection through-hole.
8. the connection structure of power battery top cover and battery core according to claim 1, it is characterised in that: further include the first pressure
Contact pin and the second compressing piece, first compressing piece are set to first tab, second crimping by welding
Piece is set to second tab by welding.
9. the connection structure of power battery top cover and battery core according to claim 8, it is characterised in that: first crimping
The corner of piece and second compressing piece is disposed as rounding arc angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138694.5U CN208596745U (en) | 2018-07-18 | 2018-07-18 | The connection structure of power battery top cover and battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821138694.5U CN208596745U (en) | 2018-07-18 | 2018-07-18 | The connection structure of power battery top cover and battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208596745U true CN208596745U (en) | 2019-03-12 |
Family
ID=65603238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821138694.5U Active CN208596745U (en) | 2018-07-18 | 2018-07-18 | The connection structure of power battery top cover and battery core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208596745U (en) |
-
2018
- 2018-07-18 CN CN201821138694.5U patent/CN208596745U/en active Active
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Effective date of registration: 20220124 Address after: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 523000 Dalang Town, Dongguan, Guangdong province Xiangshan Pine Hill Village Xiangshan Industrial Park Jiayuan Road No. 9 Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: SHENZHEN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. |