CN203085669U - Lithium-ion power battery - Google Patents

Lithium-ion power battery Download PDF

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Publication number
CN203085669U
CN203085669U CN2012207037179U CN201220703717U CN203085669U CN 203085669 U CN203085669 U CN 203085669U CN 2012207037179 U CN2012207037179 U CN 2012207037179U CN 201220703717 U CN201220703717 U CN 201220703717U CN 203085669 U CN203085669 U CN 203085669U
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CN
China
Prior art keywords
positive
lug
negative
lithium
electrode tabs
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.)
Expired - Lifetime
Application number
CN2012207037179U
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Chinese (zh)
Inventor
张火成
张娜
王永武
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.)
Lishen Qingdao New Energy Co Ltd
Original Assignee
Tianjin Lishen Battery JSCL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Lishen Battery JSCL filed Critical Tianjin Lishen Battery JSCL
Priority to CN2012207037179U priority Critical patent/CN203085669U/en
Application granted granted Critical
Publication of CN203085669U publication Critical patent/CN203085669U/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 discloses a lithium-ion power battery. The lithium-ion power battery comprises a plurality of shunt-wound pole packs, battery cover plates and double-layer collecting leading sheets, wherein the pole packs comprise positive pole pieces, negative pole pieces, and foil electrode tabs integrally formed on the positive pole pieces and the negative pole pieces, the foil electrode tabs on the positive pole pieces form positive electrode tabs of the pole packs, and the foil electrode tabs on the negative pole pieces form negative electrode tabs of the pole packs; and the double-layer collecting leading sheets are used for respectively and fixedly connecting the positive electrode tabs and the negative electrode tabs of the pole packs with the battery cover plates. According to the lithium-ion power battery, by adopting a design that the electrode tabs are formed by directly remaining foil on the edges of the positive electrode tabs and the negative electrode tabs by virtue of die cutting and stamping, the positions of the electrode tabs of the pole packs of a battery core are optimized, the internal resistance of the battery is effectively reduced, the reliability of battery assembling is improved, and the use ratio of the battery space is increased; and meanwhile, the comprehensive performances including the high-multiplying-power charge-discharge performance of the power battery and the like are improved, thus being suitable for the requirements of the large-scale industrial production.

Description

Lithium-ion-power cell
Technical field
The utility model relates to electrokinetic cell and makes field, especially a kind of lithium-ion-power cell.
Background technology
Along with the development of lithium ion battery industry, the maturation of electric vehicle engineering and perfect day by day, the application of power lithium-ion battery also more and more widely, the thing followed is the concerns of people to the lithium ion battery power-performance.
For existing electrokinetic cell structure, the general mode that all adopts soldering polar ear on positive and negative lug, this just makes that the drainage sheet contact area of cell polar ear and battery cover board is little, pole piece drainage skewness weighing apparatus, utmost point group integral thickness heterogeneity, cause the internal resistance of cell higher, influence the high-power efficient that discharges and recharges, but also cause the reduction of battery container space availability ratio.
Summary of the invention
The purpose of this utility model is at the technological deficiency that exists in the prior art, and provides a kind of distribution of cell polar ear reasonable, can effectively reduce utmost point group thickness and improves the battery container space availability ratio and improve the lithium-ion-power cell of high rate charge-discharge performance.
For realizing that the technical scheme that the purpose of this utility model adopted is:
A kind of lithium-ion-power cell, the utmost point group, battery cover board and the double-deck afflux leader that comprise a plurality of parallel connections, described utmost point group comprise positive plate and negative plate and be integrally formed in positive plate and negative plate on the paper tinsel lug, paper tinsel lug on the described positive plate constitutes the anode ear of utmost point group, paper tinsel lug on the described negative plate constitutes the negative electrode lug of utmost point group, and described double-deck flow collection sheet is fixedlyed connected the positive and negative lug of utmost point group respectively with battery cover board.
Described paper tinsel lug is for staying paper tinsel in positive/negative plate edge and adopting the cross cutting impact style to form.
Described double-deck afflux leader is aluminium foil matter just very, and negative pole is a red copper nickel plating material.
The single thickness of described double-deck afflux leader is 0.1-0.5mm.
Described utmost point group is a takeup type, and the paper tinsel lug on the described positive/negative plate is provided with at interval and spacing progressively becomes greatly, and described positive and negative lug is formed by the paper tinsel lug stacked on top of positive/negative plate.
Described utmost point group is stacked, and described positive and negative lug is formed by the paper tinsel lug stacked on top of positive/negative plate.
Compared with prior art, the beneficial effects of the utility model are:
Lithium-ion-power cell of the present utility model; adopt and directly stay paper tinsel to adopt the cross cutting punching press to form the design of lug at the positive/negative plate edge; optimized the position of electric core utmost point group lug; effectively reduce the internal resistance of cell; improved the reliability of battery assembling; improve the utilance of battery space, improved comprehensive electrochemical properties such as electrokinetic cell high rate charge-discharge pond performance simultaneously, be fit to requirements of large-scale industrial production.
Description of drawings
Fig. 1 is the positive plate figure of the utility model lithium-ion-power cell structure,
Fig. 2 is the negative plate figure of the utility model lithium-ion-power cell structure,
Fig. 3 is the utmost point picture group of the utility model lithium-ion-power cell structure,
Fig. 4 is the battery cover figure of the utility model lithium-ion-power cell structure,
Fig. 5 is the assembly drawing of the utility model lithium-ion-power cell structure.
Among the figure: 1. positive plate paper tinsel lug; 2. positive plate; 3. negative plate paper tinsel lug; 4. negative plate; 5. utmost point group; 6. double-deck afflux leader; 7. electric core; 8. battery cover board.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in Fig. 1-5, lithium-ion-power cell of the present utility model, the utmost point group 5, battery cover board 8 and the double-deck afflux leader 6 that comprise a plurality of parallel connections, wherein, electric core with utmost point group is that takeup type is an example, described utmost point group 5 comprises positive plate 2 and negative plate 4 and is integrally formed in positive plate paper tinsel lug 1 and negative plate paper tinsel lug 3 on positive plate and the negative plate respectively that specifically, described paper tinsel lug is for staying paper tinsel in positive/negative plate edge and adopting the cross cutting impact style to form.Simultaneously, because takeup type progressively becomes greatly along with twining its thickness when twining, the paper tinsel lug on the described positive/negative plate is provided with at interval and spacing progressively becomes greatly, so just can guarantee the paper tinsel lug stacked on top on the positive/negative plate and constitutes positive and negative lug respectively.The positive and negative lug of described a plurality of utmost point groups is fixedlyed connected with battery cover board by double-deck flow collection sheet.
Wherein, described double-deck afflux leader is aluminium foil matter just very, and negative pole is a red copper nickel plating material.Preferably, the single thickness of described double-deck afflux leader is 0.1-0.5mm, described double-deck afflux leader is herringbone structure, fixedlys connected with battery cover board 8 that positive and negative lug that lower openings will constitute a plurality of utmost point groups of electric core contains in it and be in parallel with it fixedly connected in its top.
Shown in Fig. 4,5, a plurality of utmost point groups 5 that coiling is finished are connected in parallel and form electric core 7, then cathode foil lug 1 and the anode foil utmost point 3 ears are carried out the low power ultrasound pre-welding, make the paper tinsel lug of each utmost point group be joined together to form positive and negative lug, at last the lug of pre-postwelding is placed on and carries out formally fixing welding between the double-deck afflux leader 6 and avoid ultrasonic wave that the paper tinsel lug is damaged.
It is to be noted, above-mentioned is to be that example is carried out exemplary illustrated with the takeup type, for the stacked design that can adopt the utility model equally, promptly on positive/negative plate, form the paper tinsel lug respectively, the paper tinsel lug stacked on top on the positive/negative plate is in parallel and constitute positive and negative lug.All the other steps are similar to the aforementioned embodiment, do not repeat them here.
Lithium-ion-power cell of the present utility model; adopt and directly stay paper tinsel to adopt the cross cutting punching press to form the design of lug at the positive/negative plate edge; optimized the position of electric core utmost point group lug; effectively reduce the internal resistance of cell; improved the reliability of battery assembling; improve the utilance of battery space, improved comprehensive electrochemical properties such as electrokinetic cell high rate charge-discharge pond performance simultaneously, be fit to requirements of large-scale industrial production.
The above only is a preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (6)

1. lithium-ion-power cell, it is characterized in that, the utmost point group, battery cover board and the double-deck afflux leader that comprise a plurality of parallel connections, described utmost point group comprise positive plate and negative plate and be integrally formed in positive plate and negative plate on the paper tinsel lug, paper tinsel lug on the described positive plate constitutes the anode ear of utmost point group, paper tinsel lug on the described negative plate constitutes the negative electrode lug of utmost point group, and described double-deck flow collection sheet is fixedlyed connected the positive and negative lug of utmost point group respectively with battery cover board.
2. lithium-ion-power cell as claimed in claim 1 is characterized in that: described paper tinsel lug is for staying paper tinsel in positive/negative plate edge and adopting the cross cutting impact style to form.
3. lithium-ion-power cell as claimed in claim 2 is characterized in that: described double-deck afflux leader is aluminium foil matter just very, and negative pole is a red copper nickel plating material.
4. as lithium-ion-power cell as described in the claim 3, it is characterized in that: the single thickness of described double-deck afflux leader is 0.1-0.5mm.
5. as each described lithium-ion-power cell of claim 1-4, it is characterized in that: described utmost point group is a takeup type, paper tinsel lug on the described positive/negative plate is provided with at interval and spacing progressively becomes greatly, and described positive and negative lug is formed by the paper tinsel lug stacked on top of positive/negative plate.
6. as each described lithium-ion-power cell of claim 1-4, it is characterized in that: described utmost point group is stacked, and described positive and negative lug is formed by the paper tinsel lug stacked on top of positive/negative plate.
CN2012207037179U 2012-12-17 2012-12-17 Lithium-ion power battery Expired - Lifetime CN203085669U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012207037179U CN203085669U (en) 2012-12-17 2012-12-17 Lithium-ion power battery

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Application Number Priority Date Filing Date Title
CN2012207037179U CN203085669U (en) 2012-12-17 2012-12-17 Lithium-ion power battery

Publications (1)

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CN203085669U true CN203085669U (en) 2013-07-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186046A (en) * 2015-08-22 2015-12-23 江苏海四达电源股份有限公司 Multi-tab rolling cores and cover board connecting mode of lithium-ion battery
CN105489825A (en) * 2015-12-01 2016-04-13 西安瑟福能源科技有限公司 Manufacturing method for power type flexibly-packaged lithium ion battery cell
CN105655651A (en) * 2015-09-08 2016-06-08 江苏海四达电源股份有限公司 Articulated reeling structure of U shaped busbar of lithium ion battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186046A (en) * 2015-08-22 2015-12-23 江苏海四达电源股份有限公司 Multi-tab rolling cores and cover board connecting mode of lithium-ion battery
CN105655651A (en) * 2015-09-08 2016-06-08 江苏海四达电源股份有限公司 Articulated reeling structure of U shaped busbar of lithium ion battery
CN105489825A (en) * 2015-12-01 2016-04-13 西安瑟福能源科技有限公司 Manufacturing method for power type flexibly-packaged lithium ion battery cell
CN105489825B (en) * 2015-12-01 2018-07-03 西安瑟福能源科技有限公司 A kind of manufacturing method of power-type flexible packing lithium ion battery battery core

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20220118

Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong

Patentee after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD.

Address before: 300384 Tianjin Xiqing District Binhai hi tech Industrial Development Zone (outer ring) 38 Haitai South Road

Patentee before: TIANJIN LISHEN BATTERY JOINT-STOCK Co.,Ltd.

TR01 Transfer of patent right
CX01 Expiry of patent term

Granted publication date: 20130724

CX01 Expiry of patent term