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 PDF

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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
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CN
China
Prior art keywords
tab
top cover
battery core
pole
connection
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
Application number
CN201821138694.5U
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Chinese (zh)
Inventor
华秉杨
赵阳雨
李勇军
张君
李文阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zenio New Energy Battery Technologies Co Ltd
Original Assignee
Dongguan Tafel New Energy Technology Co Ltd
Jiangsu Tafel New Energy Technology Co Ltd
Shenzhen Tafel New Energy Technology Co Ltd
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Application filed by Dongguan Tafel New Energy Technology Co Ltd, Jiangsu Tafel New Energy Technology Co Ltd, Shenzhen Tafel New Energy Technology Co Ltd filed Critical Dongguan Tafel New Energy Technology Co Ltd
Priority to CN201821138694.5U priority Critical patent/CN208596745U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy 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

The connection structure of power battery top cover and battery core
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.
CN201821138694.5U 2018-07-18 2018-07-18 The connection structure of power battery top cover and battery core Active CN208596745U (en)

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)

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TR01 Transfer of patent right

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.