CN103490031B - The manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear - Google Patents
The manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear Download PDFInfo
- Publication number
- CN103490031B CN103490031B CN201310347910.2A CN201310347910A CN103490031B CN 103490031 B CN103490031 B CN 103490031B CN 201310347910 A CN201310347910 A CN 201310347910A CN 103490031 B CN103490031 B CN 103490031B
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- China
- Prior art keywords
- tab
- anode ear
- nickel strap
- aluminium strip
- seal area
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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 invention discloses the manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear.Soft bag lithium ionic cell comprises flexible package shell and anode ear, and the tab pressing that the tab socket of flexible package shell and anode ear are attached by anode ear seals; Anode ear comprises aluminium strip and nickel strap, and the upper end of aluminium strip and the lower end of nickel strap overlap, and the middle part of nickel strap comprises the seal area of lug, and the upper and lower surface at position, nickel strap seal area respectively attaches 1 layer of tab; Tab extends downwardly into the front and rear surfaces of aluminium strip and nickel strap overlapping part, and exceedes the lower end of nickel strap, and the width of tab is greater than the width of aluminium strip.Anode ear intensity of the present invention is high, does not need bending, can save labour turnover after assembling, and improve conforming product rate, it is little that anode ear takies cell thickness, is conducive to improving battery capacity, reduces the thickness of soft bag lithium ionic cell.<!--1-->
Description
[technical field]
The present invention relates to soft-package battery and Soft Roll electric capacity, particularly relate to the manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear.
[background technology]
Soft bag lithium ionic cell is made up of positive and negative pole material, electrolyte, barrier film, lug and shell, and in order to allow lithium ion battery charge normal electric discharge, battery compartment must anhydrous vacuum.Lug is the parts that battery is used for conducting electricity, and battery compartment is inserted in its one end, and the other end is exposed at outside battery.
The place that Soft Roll electric capacity and the structure of soft-package battery have similarity different is that positive and negative pole material and electrolyte are different, and Soft Roll electric capacity is identical with the structure of soft-package battery anode ear, and the soft bag lithium ionic cell of indication of the present invention comprises Soft Roll electric capacity.
The positive pole aluminium strip of soft bag lithium ionic cell (comprising Soft Roll electric capacity) makes, and negative pole nickel strap makes, and middle with can the tab of hot melt attach, lug metal tape upper and lower surface respectively has one deck tab wrap up, seals when lug passes battery case.Lithium ion battery need of work installs lithium ion battery privacy protection plate additional, and the assembling of baffle and battery adopts soldering, and because positive pole aluminium strip does not possess soldering performance, must weld one section of nickel strap and just can carry out soldering, this technical matters is aluminium-to-nickel.
The structure of tradition soft bag lithium ionic cell as shown in Figure 1 to Figure 3, anode ear 100 comprises aluminium strip 1 and nickel strap 2, the middle part of aluminium strip is the seal area of lug, the upper and lower surface at position, aluminium strip seal area respectively attaches 1 layer of tab 3, the width of tab 3 is greater than the width of lug, and the lower end of aluminium strip upper end and nickel strap overlaps.
When aluminium-to-nickel anode ear and battery assemble, tab 3 pressing that the tab socket of flexible package shell 200 and anode ear are attached by anode ear seals.
Existing technique adopts the upper and lower surface of tab in positive pole aluminium strip packaging heat-sealable area first attaching commensurateiy wide, then hot-forming, again on the aluminium strip outer end laser spot welding exposed or ultrasonic bonding one section of nickel strap to aluminium strip, expose one section of aluminium strip 1a at the joint area turning nickel.This section of aluminium strip needs repeatedly to bend in cell assembling processes, because the thickness of positive pole aluminium strip generally only has 0.1 millimeter, mechanical strength is very low, is easy to be fractureed or break, causes battery to scrap at the aluminium strip at the welding point place of anode ear aluminium-to-nickel.
In order to prevent the anode ear of this battery from fractureing, battery production business needs to consume a large amount of artificial aluminium strip that this section exposes to be folded in battery top groove, then clings with adhesive sticker.With regard to the aluminium strip that unlikely bending exposes when such anode ear bending, the ratio that battery is scrapped can be reduced, but then, but add human cost.In addition, after anode ear bending, add the space that anode ear takies, limit the thickness of soft bag lithium ionic cell, make the thickness of soft bag lithium ionic cell can not be less than 3 millimeters.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of needs and is folded into the anode ear in battery top groove and manufacture method.
Another technical problem that will solve of the present invention is to provide a kind of soft bag lithium ionic cell of thinner thickness.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, a kind of anode ear, comprise aluminium strip and nickel strap, the upper end of aluminium strip and the lower end of nickel strap overlap, and the middle part of nickel strap comprises the seal area of lug, and the upper and lower surface at position, nickel strap seal area respectively attaches 1 layer of tab; Described tab extends downwardly into the front and rear surfaces of aluminium strip and nickel strap overlapping part, and exceedes the lower end of nickel strap; The width of tab is greater than the width of aluminium strip.
Above-described anode ear, the both sides of aluminium strip and nickel strap overlapping part tab respectively comprise a rectangular indentation, and the width of aluminium strip and nickel strap overlapping part tab is less than the width of position, seal area tab.
Above-described anode ear, nickel strap top margin and side round-corner transition.
A kind of soft bag lithium ionic cell, comprise flexible package shell and anode ear, the tab pressing that the tab socket of flexible package shell and anode ear are attached by anode ear seals, and described anode ear is above-mentioned anode ear.
Above-described soft bag lithium ionic cell, the tab socket of flexible package shell and anode ear are sealed by the tab pressing at position, anode ear nickel strap seal area; The overlapping part of anode ear aluminium strip and nickel strap is in the below of seal area or top.
A manufacture method for above-mentioned anode ear, comprises the following steps:
1) aluminium strip upper end and nickel strap lower end overlap;
2) after step 1 completes, paste tab in the front and rear surfaces of aluminium strip and nickel strap overlapping part, the upper end of tab exceedes the seal area of the middle part lug of nickel strap, and the lower end of tab exceedes the lower end of nickel strap.
The both sides of aluminium strip and nickel strap overlapping part tab after step 2 completes, are respectively cut out out a rectangular indentation, are made the width of aluminium strip and nickel strap overlapping part tab be less than the width of position, seal area tab by the manufacture method of above-described anode ear.
Anode ear intensity of the present invention is high, does not need bending, can save labour turnover after assembling, and improve conforming product rate, it is little that anode ear takies cell thickness, is conducive to improving battery capacity, reduces the thickness of soft bag lithium ionic cell.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the front view of prior art soft bag lithium ionic cell.
Fig. 2 is the right view of prior art soft bag lithium ionic cell.
Fig. 3 is that A in Fig. 1 is to cutaway view.
Fig. 4 is the front view of embodiment of the present invention soft bag lithium ionic cell.
Fig. 5 is the right view of embodiment of the present invention soft bag lithium ionic cell.
Fig. 6 is that A in Fig. 4 is to cutaway view.
Fig. 7 is the front view of embodiment of the present invention anode ear.
Fig. 8 is that C in Fig. 7 is to cutaway view.
Fig. 9 is the partial enlarged drawing at I position in Fig. 8.
Figure 10 is the stereogram of embodiment of the present invention anode ear.
[embodiment]
The structure of embodiment of the present invention soft bag lithium ionic cell as shown in Figures 4 to 6, comprises flexible package shell 200 and anode ear 100, and tab 3 pressing that the tab socket 200A of flexible package shell 200 and anode ear 100 are attached by anode ear seals.
Anode ear 100 comprises aluminium strip 1 and nickel strap 2, and the upper end of aluminium strip 1 and the lower end of nickel strap 2 are overlapped by laser spot welding or ultrasonic bonding, and as shown in the figure, H is solder joint.
Fillet R transition is adopted between nickel strap 1 top margin and side.Greatly can reduce the ratio of stinging other batteries bad, reduce the product fraction defective of 1%, the enterprise producing 500000000 yuan per year can save 5,000,000 yuan in 1 year; Whole industry annual value of production, more than 20,000,000,000 yuan, can save 200,000,000 yuan.
The middle part 2a of nickel strap 2 is the seal area of lug, and the upper and lower surface at the position, seal area of nickel strap 2 respectively attaches 1 layer of tab 3.Tab 3 extends downwardly into the front and rear surfaces of aluminium strip 1 and nickel strap 2 overlapping part, and exceedes the lower end of nickel strap 2, the lower end of nickel strap 2 is sealed, can not contact electrolyte.
The width of tab 3 is greater than the width of aluminium strip 1 and nickel strap 2, aluminium strip 1 respectively has a rectangular indentation 3a with the both sides of nickel strap 2 overlapping part tab 3, make aluminium strip 1 be less than the width B of 2a position, seal area tab 3 with the width b of nickel strap 2 overlapping part tab 3, width b is greater than the width b1 of aluminium strip 1 and nickel strap 2.
The overlapping part of the present embodiment anode ear aluminium strip 1 and nickel strap 2 is in the below of seal area 2a, and anode ear exposed parts only has nickel strap 2, and aluminium strip 1 does not expose.Also overlapping part can be arranged into the top of seal area 2a, but aluminium strip 1 is still coated by tab 3, does not expose, but overlapping part to leave seal area, to ensure the sealing effectiveness of seal area.
Anode ear 100 by following manufacture technics:
1) aluminium strip 1 upper end and nickel strap 2 lower end are overlapped by laser spot welding or ultrasonic bonding.
2), after step 1 completes, paste tab 3 at aluminium strip 1 and the front and rear surfaces of nickel strap 2 overlapping part, the upper end of tab 3 exceedes the seal area 2a of the middle part lug of nickel strap 2, and the lower end of tab 3 exceedes the lower end of nickel strap 2.
3) after step 2 completes, aluminium strip 1 and the both sides of nickel strap 2 overlapping part tab 3 are respectively cut out out a rectangular indentation 3a, make aluminium strip 1 be less than the width B of position, seal area tab 3 with the width b of nickel strap 2 overlapping part tab 3.
The exposed parts of embodiment of the present invention soft bag lithium ionic cell anode ear is all nickel strap, intensity is high, battery after assembling no longer needs bending cathode ear, each battery can save labour cost 0.03 yuan, by monthly output 1,000 ten thousand battery meters, 300,000 yuan can be saved labour turnover, conforming product rate two percentage points can be improved simultaneously; Whole industry annual value of production 20000000000 yuan calculating, escapable cost of the present invention 400,000,000 yuan.
Because the battery after assembling no longer needs bending cathode ear, it is little that anode ear takies thickness, no longer wastes the space of battery, is conducive to improving battery capacity, and the thickness of soft bag lithium ionic cell can be less than 3 millimeters.
Claims (5)
1. an anode ear, comprises aluminium strip and nickel strap, and the upper end of aluminium strip and the lower end of nickel strap overlap, and it is characterized in that, the middle part of nickel strap comprises the seal area of lug, and the upper and lower surface at position, nickel strap seal area respectively attaches 1 layer of tab; Described tab extends downwardly into the front and rear surfaces of aluminium strip and nickel strap overlapping part, and exceedes the lower end of nickel strap; The width of tab is greater than the width of aluminium strip; The overlapping part of anode ear aluminium strip and nickel strap is in the below of seal area, and the both sides of aluminium strip and nickel strap overlapping part tab respectively comprise a rectangular indentation, and the width of aluminium strip and nickel strap overlapping part tab is less than the width of position, seal area tab.
2. anode ear according to claim 1, is characterized in that, nickel strap top margin and side round-corner transition.
3. a soft bag lithium ionic cell, comprises flexible package shell and anode ear, and the tab pressing that the tab socket of flexible package shell and anode ear are attached by anode ear seals, and it is characterized in that, described anode ear is anode ear according to claim 1.
4. soft bag lithium ionic cell according to claim 3, is characterized in that, the tab socket of flexible package shell and anode ear are sealed by the tab pressing at position, anode ear nickel strap seal area.
5. a manufacture method for anode ear according to claim 1, is characterized in that, comprises the following steps:
601) aluminium strip upper end and nickel strap lower end overlap;
602) after step 601 completes, paste tab in the front and rear surfaces of aluminium strip and nickel strap overlapping part, the upper end of tab exceedes the seal area of the middle part lug of nickel strap, and the lower end of tab exceedes the lower end of nickel strap;
603) after step 602 completes, a rectangular indentation is respectively cut out out in the both sides of aluminium strip and nickel strap overlapping part tab, make the width of aluminium strip and nickel strap overlapping part tab be less than the width of position, seal area tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310347910.2A CN103490031B (en) | 2013-08-09 | 2013-08-09 | The manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310347910.2A CN103490031B (en) | 2013-08-09 | 2013-08-09 | The manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear |
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| Publication Number | Publication Date |
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| CN103490031A CN103490031A (en) | 2014-01-01 |
| CN103490031B true CN103490031B (en) | 2016-01-20 |
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| CN201310347910.2A Expired - Fee Related CN103490031B (en) | 2013-08-09 | 2013-08-09 | The manufacture method of a kind of anode ear, soft bag lithium ionic cell and anode ear |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108886126B (en) * | 2016-01-06 | 2021-11-26 | 宁德新能源科技有限公司 | Secondary battery |
| CN105810874B (en) * | 2016-04-21 | 2018-11-09 | 格远电子科技（上海）有限公司 | A kind of preparation method of lithium battery overload self-shield lug |
| CN112077460A (en) * | 2020-08-27 | 2020-12-15 | 东莞市恒源新材料有限公司 | Method for manufacturing tab |
| CN112635922B (en) * | 2020-12-16 | 2022-03-08 | 宁德新能源科技有限公司 | Battery cell, battery and electric equipment |
| CN114597495A (en) * | 2022-03-21 | 2022-06-07 | 珠海冠宇电池股份有限公司 | Battery and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610779A (en) * | 2012-02-07 | 2012-07-25 | 范能文 | Anode tab, soft packing lithium ion battery and method for manufacturing anode tab |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1983677A (en) * | 2005-12-13 | 2007-06-20 | 中国电子科技集团公司第十八研究所 | Extreme ear structure of flexible-packed battery |
| CN101677137B (en) * | 2008-09-17 | 2013-10-23 | 深圳市比克电池有限公司 | Soft packing lithium ion battery and method of producing same |
| CN101640284A (en) * | 2009-06-05 | 2010-02-03 | 珠海汉格能源科技有限公司 | Cylinder type lithium ion battery cell and making method thereof |
| CN201629366U (en) * | 2010-02-09 | 2010-11-10 | 惠州市德赛聚能电池有限公司 | Lithium ion battery anode tab |
| CN202454645U (en) * | 2012-02-07 | 2012-09-26 | 范能文 | Positive lug and soft packaged lithium-ion battery |
| CN203406363U (en) * | 2013-08-09 | 2014-01-22 | 范能文 | Positive lead and soft package lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610779A (en) * | 2012-02-07 | 2012-07-25 | 范能文 | Anode tab, soft packing lithium ion battery and method for manufacturing anode tab |
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Owner name: SHENZHEN BATERUI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: FAN NENGWEN Effective date: 20140314 |
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Effective date of registration: 20140314 Address after: 516000 C, building 8, Gaoqiao Road, Gaoqiao community, Longgang District, Guangdong, Shenzhen three, China 601 Applicant after: Fan Nengwen Address before: 25, three, lucky garden, new town, Huiyang District, Guangdong, Huizhou Province, 11B Applicant before: Fan Nengwen |
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Granted publication date: 20160120 Termination date: 20190809 |