CN101635342A - Method for fastening connection between pole lug and pole post of lithium ion power battery - Google Patents
Method for fastening connection between pole lug and pole post of lithium ion power battery Download PDFInfo
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- CN101635342A CN101635342A CN200910067404A CN200910067404A CN101635342A CN 101635342 A CN101635342 A CN 101635342A CN 200910067404 A CN200910067404 A CN 200910067404A CN 200910067404 A CN200910067404 A CN 200910067404A CN 101635342 A CN101635342 A CN 101635342A
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- pole
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- power cell
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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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Abstract
The invention relates to a method for fastening the connection between a pole lug and a pole post of a lithium ion power battery. An anode pole piece and a cathode pole piece are respectively connected with the pole lug, the pole lug and the pole post are fastened by bolts and nuts, and the connection parts of the bolts and the nuts are welded. The invention can improve the safety and the service life of the high capacity lithium ion power battery; the invention has the advantages of simple method, economical production and decreased production cost; and industrial production can be realized easily and the method has wide application prospect.
Description
Technical field
The invention belongs to the lithium-ion-power cell application, specifically, the present invention relates to the fastening method that is connected between a kind of lithium-ion-power cell lug and the pole, by improvement, be purpose with the fail safe of raising battery and the life-span of battery to traditional high-capacity lithium-ion power battery battery processing technology.
Background technology
Lithium ion battery has positive pole, negative pole, barrier film, electrolyte usually.Pole piece (both positive and negative polarity) separates with barrier film makes the battery bag, again the battery bag is put into pack into plastics or metal shell, injects electrolyte, and battery is formed in the sealing back.Wherein, the battery bag is to be connected with pole by the lug that is connected with pole piece with the external circuit conducting.
At present, jumbo lithium-ion-power cell people's attention extremely.When high current charge-discharge, lug or pole connecting portion be if having oxide layer, a greasy dirt, perhaps connects looseningly etc. between lug and the pole, all inevitably causes local location overheated, forms potential safety hazard, and make the consistency of battery poor.
Chinese patent CN2686105 discloses a kind of lug and pole riveted joint fastening method, and it adopts rivet that pole and lug are riveted together, and increases the stability of lug and pole, this method complicated operation, and also fastening insecure.
Summary of the invention
The purpose of this invention is to provide the method for attachment between a kind of lithium-ion-power cell lug and the pole, can solve owing to connect the overheated safety problem that causes of the insecure part that causes.
For achieving the above object, method of attachment between lithium-ion-power cell lug provided by the invention and the pole, be that anode pole piece or cathode pole piece are connected on the lug, lug and pole are fastening with screw bolt and nut, and the binding site between the bolts and nuts is welded.
Positive pole ear of the present invention is the aluminium foil material, and Positive Poles is the fine aluminium material, and negative lug is the Copper Foil material, and the negative pole pole is the fine copper material.
Before the present invention welds the binding site between the bolts and nuts, the whether short circuit of first test battery core bag.
The present invention welds the binding site between the bolts and nuts, can adopt ultrasonic bonding, and the welding position is that the binding site along screw bolt and nut welds a circle.
Method of attachment provided by the invention, simple to operate, make economical, guaranteed that lug and pole are connected firmly, lithium-ion-power cell can effectively be played a role, can be widely used in the tractive effort power supply of hybrid power and electric motor car, be with a wide range of applications.
Description of drawings
Fig. 1 is the electric core of lithium ion power battery schematic diagram.
Main sign flag in the accompanying drawing
The 1-pole-piece pole-ear; The 2-bolt; The 3-nut; The 4-pole
Embodiment
In order more clearly to understand content of the present invention, characteristics, here describe with the drawings and specific embodiments.Need to prove that also the lithium-ion-power cell that the present invention mentions is a known technology, each parts that relates in this battery etc. also are known technologies.For simplicity's sake, the present invention does not describe particularly to the formation of each parts in the battery that relates to and characteristic etc. in the following embodiments.
Embodiment 1
Battery assembling (160AH)
Positive pole ear material of the present invention is an aluminium foil, and the negative lug material is a Copper Foil, and the Positive Poles material is an aluminium, and negative pole pole material is a copper.
The active material coating is faced mutually positive pole, barrier film, negative pole so that barrier film is alternate, the both positive and negative polarity lug is in an opposite side, repetition is according to negative pole, barrier film, positive pole, barrier film, negative pole ... negative pole stacks order and makes the battery bag, before going into battery case, with anode ear, negative lug and after the pole of positive and negative electrode is connected with nuts and bolt respectively, check that with universal instrument 10K shelves the battery bag not under the short-circuit conditions, carries out butt welding with ultrasonic welding machine to the binding site between the bolts and nuts and connects (along binding site welding one circle of screw bolt and nut).Concrete welding condition can be adjusted according to the volume size of bolts and nuts.Adopt stainless steel 1Cr18Ni9, specification M5 * 40 and nut stainless steel 1Cr18Ni9, specification M5 such as the bolt in the present embodiment, its weld time 1～2S, welding frequency 35KHz, required air pressure are 0.5kgf/cm
2-6.0kgf/cm
2
With screw bolt and nut weld fastening after, battery is packaged into battery case, weld battery cover, through after 80 ± 5 ℃ of vacuumizes again fluid injection seal.
Charge-discharge test and case temperature test:
Charge-discharge test to the battery of the present invention electric test of resetting, detects housing outer wall central part with temperature-measuring gun and pole part megadyne temperature degree changes with different charge-discharge magnifications then, the results are shown in Table 1.
Table 1: battery discharges and recharges variations in temperature under different multiplying
| The battery charging and discharging multiplying power | Capacity (AH) | Maximum case temperature (℃) | Maximum pole temperature (just/negative) (℃) |
| ??0.1C | ??161 | ??30 | ??40/36 |
| ??0.3C | ??160.5 | ??35 | ??41/37 |
| ??1C | ??160.2 | ??45 | ??50/46 |
| ??2C | ??160 | ??50 | ??52/48 |
As can be seen from Table 1, adopt method of attachment of the present invention, the temperature of battery case and the temperature of pole are under different multiplying discharges and recharges condition, and it is less demanding in 60 ℃ of requirements that temperature all reaches the lithium-ion-power cell industry standard.
Claims (6)
1, the method for attachment between a kind of lithium-ion-power cell lug and the pole, it mainly comprises:
Anode pole piece and cathode pole piece are connected on the lug, fastening between lug and the pole with screw bolt and nut, the binding site between the bolts and nuts is welded.
2, the method for attachment between lithium-ion-power cell lug according to claim 1 and the pole, wherein, positive pole ear is the aluminium foil material, and Positive Poles is the fine aluminium material, and negative lug is the Copper Foil material, and the negative pole pole is the fine copper material.
3, the method for attachment between lithium-ion-power cell lug according to claim 1 and the pole, wherein, before the binding site between the bolts and nuts welded, the whether short circuit of test battery core bag.
4, according to the method for attachment between claim 1 or 3 described lithium-ion-power cell lugs and the pole, wherein, it is to use ultrasonic bonding that the binding site between the bolts and nuts is welded.
5, according to the method for attachment between claim 1 or 3 described lithium-ion-power cell lugs and the pole, wherein, welding is that the binding site along screw bolt and nut welds a circle.
6, the method for attachment between lithium-ion-power cell lug according to claim 4 and the pole, wherein, the condition of ultrasonic bonding is: be 1～2S weld time, and welding frequency is 35KHz, and required air pressure is 0.5kgf/cm
2-6.0kgf/cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910067404A CN101635342A (en) | 2009-08-18 | 2009-08-18 | Method for fastening connection between pole lug and pole post of lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910067404A CN101635342A (en) | 2009-08-18 | 2009-08-18 | Method for fastening connection between pole lug and pole post of lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101635342A true CN101635342A (en) | 2010-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910067404A Pending CN101635342A (en) | 2009-08-18 | 2009-08-18 | Method for fastening connection between pole lug and pole post of lithium ion power battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN101635342A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814592A (en) * | 2010-03-12 | 2010-08-25 | 珠海锂源动力投资有限公司 | Method for connecting polar lug and polar column of lithium ion battery |
| CN101814591A (en) * | 2010-03-12 | 2010-08-25 | 珠海锂源动力投资有限公司 | Method for connecting polar lug and polar column of lithium ion battery |
| CN101887959A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Riveted low-internal-resistance energy storage device |
| CN102306736A (en) * | 2011-09-08 | 2012-01-04 | 山东圣阳电源股份有限公司 | Lug bolted lithium ion battery |
| CN105643083A (en) * | 2014-11-10 | 2016-06-08 | 中国电子科技集团公司第十八研究所 | Welding method for pole lug and pole rod of high-power lithium ion battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638252Y (en) * | 2003-08-08 | 2004-09-01 | 新乡无氧铜材总厂 | Square power lithium ion cell |
| CN201167106Y (en) * | 2008-02-15 | 2008-12-17 | 宁波维科电池有限公司 | High-power stacking type pole ear structure for dynamic lithium battery |
-
2009
- 2009-08-18 CN CN200910067404A patent/CN101635342A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638252Y (en) * | 2003-08-08 | 2004-09-01 | 新乡无氧铜材总厂 | Square power lithium ion cell |
| CN201167106Y (en) * | 2008-02-15 | 2008-12-17 | 宁波维科电池有限公司 | High-power stacking type pole ear structure for dynamic lithium battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814592A (en) * | 2010-03-12 | 2010-08-25 | 珠海锂源动力投资有限公司 | Method for connecting polar lug and polar column of lithium ion battery |
| CN101814591A (en) * | 2010-03-12 | 2010-08-25 | 珠海锂源动力投资有限公司 | Method for connecting polar lug and polar column of lithium ion battery |
| CN101887959A (en) * | 2010-06-24 | 2010-11-17 | 朝阳立塬新能源有限公司 | Riveted low-internal-resistance energy storage device |
| CN102306736A (en) * | 2011-09-08 | 2012-01-04 | 山东圣阳电源股份有限公司 | Lug bolted lithium ion battery |
| CN105643083A (en) * | 2014-11-10 | 2016-06-08 | 中国电子科技集团公司第十八研究所 | Welding method for pole lug and pole rod of high-power lithium ion battery |
| CN105643083B (en) * | 2014-11-10 | 2019-05-07 | 中国电子科技集团公司第十八研究所 | The welding method of high power lithium ion cell tab and pole |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUHAI LITHIUM POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LITHIUM ENERGY(CHANGCHUN)NEW ENERGY CO., LTD. Effective date: 20120215 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 130012 CHANGCHUN, JILIN PROVINCE TO: 519000 ZHUHAI, GUANGDONG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20120215 Address after: 519000 Guangdong Province, Zhuhai city Xiangzhou District Jida Waterfront Road No. 47 Everbright International Trade Center 1205 units Applicant after: Zhuhai Liyuan Power Technology Co., Ltd. Address before: 130012, No. 4370, Wei Shan Road, hi tech Development Zone, Jilin, Changchun Applicant before: Changchun Liyuan New Energy Technology Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100127 |