CN113560369A - Electrode lug flattening method for full-electrode-lug cylindrical lithium battery - Google Patents
Electrode lug flattening method for full-electrode-lug cylindrical lithium battery Download PDFInfo
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- CN113560369A CN113560369A CN202110801079.8A CN202110801079A CN113560369A CN 113560369 A CN113560369 A CN 113560369A CN 202110801079 A CN202110801079 A CN 202110801079A CN 113560369 A CN113560369 A CN 113560369A
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- Prior art keywords
- full
- kneading
- flattening
- sleeve
- lug
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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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
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a pole lug flattening method for a full-pole lug cylindrical lithium battery, which is mainly characterized in that a flattening sleeve is arranged on a full-pole lug outer sleeve; thus, when the kneading flat head rotates and approaches to the kneading flat sleeve, the kneading flat head can directly rotate to act on the kneading flat sleeve after contacting the kneading flat sleeve, and drives the kneading flat sleeve to elastically deform to transmit the rotating force to act on the full pole lug to complete kneading flat; in the flattening method, because the flattening head is not in direct contact with the full lug any more, namely, the flattening head is not in direct contact friction with the full lug, the soft full lug can be effectively prevented from being partially crushed, thereby eliminating the influence on the product quality and better improving the qualification rate and the safety performance of the product. Meanwhile, the kneading and flattening sleeve is made of wear-resistant elastic deformation materials, so that the elastic recovery can be realized after the kneading and flattening of the full lug is finished, and the working purpose of circular kneading and flattening can be realized.
Description
Technical Field
The invention relates to a pole lug flattening method, in particular to a pole lug flattening method of a full-pole-lug cylindrical lithium battery.
Background
At present, the whole pole lug of a winding battery core is flattened in the production and manufacturing process of a whole pole lug cylindrical lithium battery, the whole pole lug is directly contacted on the whole pole lug through a flattening head of a flattening machine in a traditional flattening method, and then the whole pole lug is rolled and driven to be flattened at the end part of the winding battery core after the whole pole lug approaches to the whole pole lug along with the rotation of the flattening head.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a pole lug flattening method of a full-pole-lug cylindrical lithium battery, which can effectively avoid breaking of a full pole lug in the flattening process, eliminate the influence on the product quality and improve the product qualification rate and the safety performance.
The technical problem of the invention is realized by the following technical scheme:
a pole lug flattening method for a full-pole-lug cylindrical lithium battery comprises the following steps:
conveying a processed winding battery cell of the cylindrical lithium battery to a kneading machine, wherein the two ends of the winding battery cell are respectively provided with a full lug, and the full lug at each end corresponds to the kneading flat head of the kneading machine;
step two, kneading and flattening the outer sleeve of the full tab;
step three, kneading the flat head while rotating and approaching the flat sleeve, directly rolling and acting on the flat sleeve after contacting the flat sleeve, driving the flat sleeve to elastically deform to transmit rolling force to act on the full tab, and further kneading and flattening the full tab;
step four, after the full lug is kneaded flatly, kneading the flathead to drive the kneading flathead to leave the winding battery cell, and elastically resetting the kneading flathead;
and step five, carrying out full tab flattening of the next winding battery cell again according to the sequence from the step one to the step four, thereby forming circular flattening work.
The kneading flat sleeve is a wear-resistant elastic sleeve.
The kneading flat sleeve is sleeved on the end part of the winding battery cell in a matching way and completely covers the full pole lug.
An inner chamfer which is in circumferential contact with the top of the full tab is arranged in the kneading flat sleeve.
The kneading flat sleeve is rolled by the kneading flat roller to drive the elastic deformation to transmit the rolling force to the full pole lug.
Compared with the prior art, the invention mainly provides a unique method for flattening the full tab of the cylindrical lithium battery, which is characterized in that a flattening sleeve is sleeved on the outer sleeve of the full tab; thus, when the kneading flat head rotates and approaches to the kneading flat sleeve, the kneading flat head can directly rotate to act on the kneading flat sleeve after contacting the kneading flat sleeve, and drives the kneading flat sleeve to elastically deform to transmit the rotating force to act on the full pole lug to complete kneading flat; in the flattening method, because the flattening head is not in direct contact with the full lug any more, namely, the flattening head is not in direct contact friction with the full lug, the soft full lug can be effectively prevented from being partially crushed, thereby eliminating the influence on the product quality and better improving the qualification rate and the safety performance of the product. Meanwhile, the kneading and flattening sleeve is made of wear-resistant elastic deformation materials, so that the elastic recovery can be realized after the kneading and flattening of the full lug is finished, and the working purpose of circular kneading and flattening can be realized.
Drawings
Fig. 1 is a schematic structural view of a wound battery cell of the present invention without full tab flattening.
Fig. 2 is a schematic structural view of a wound battery cell according to the present invention during full tab flattening.
Fig. 3 is a schematic structural view of the wound cell of the present invention after full tab flattening.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a schematic sectional view of the kneading and flattening sleeve.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the above drawings.
As shown in fig. 1 to 5, 1, winding the battery cell, 11, the full pole lug, 2, flattening the sleeve, 21, the inner chamfer, 3, flattening the flat head, 31, flattening the roller.
A pole lug flattening method for a full-pole-lug cylindrical lithium battery is a flattening method capable of effectively preventing soft full-pole lugs from being crushed, and comprises the following operation steps:
step one, conveying a processed winding battery cell 1 of the cylindrical lithium battery to a kneading machine, wherein the two ends of the winding battery cell are respectively provided with a full lug 11, and the full lug 11 at each end corresponds to a kneading flat head 3 of the kneading machine;
step two, sleeving a flat sleeve 2 outside the full tab 11, wherein the flat sleeve can be automatically sleeved in combination with a full-automatic production line of a cylindrical lithium battery;
step three, the flat kneading head 3 rotates and approaches the flat kneading sleeve 2, after the flat kneading sleeve is contacted, the flat kneading roller 31 of the flat kneading head 3 directly rolls and acts on the flat kneading sleeve 2, drives the flat kneading sleeve 2 to elastically deform, transmits the rolling force to act on the full tab 11, and rolls and flattens the full tab 11; certainly, the elastic deformation amount required by the flattening of the full tab is not large, and the elastic deformation is only in one moment, so the whole deformation process of the flattening sleeve 2 is not obvious;
meanwhile, an inner chamfer 21 is arranged in the flat kneading sleeve 2, and the inner chamfer can be directly in circumferential contact with the top of the full tab 11 after the full tab 11 is sleeved in the flat kneading sleeve 2; thus, once the flattening sleeve 2 is stressed, the full pole lug 11 can be better guided to be flattened as shown in fig. 4;
step four, after the full lug 11 is kneaded flatly, the kneading flathead 3 drives the kneading flatly-sleeved sleeve 2 to leave the winding battery core 1, and the kneading flatly-sleeved sleeve 2 elastically resets;
and step five, flattening the full tab 11 of the next winding battery core 1 again according to the sequence from the step one to the step four, thereby forming a circulating flattening work.
In the above-mentioned flattening method, the flattening sleeve 2 is fitted over the end of the wound electric core 1 and completely covers the full tab 11, and is made of a wear-resistant elastic sleeve, such as a rubber sleeve, a soft plastic sleeve or a soft metal sleeve, and the thickness thereof is designed mainly according to the elastic deformation.
Even because the flattening sleeve 2 adopts a wear-resistant elastic deformation material, the elastic recovery can be realized after the flattening of the full pole lug 11 is finished, so that the working purpose of circular flattening can be realized.
In addition, because the flat kneading head 3 does not directly contact and knead the full lug 11 any more, namely does not directly contact and rub the full lug 11, the soft full lug can be effectively prevented from being partially kneaded and broken, thereby eliminating the influence on the product quality and better improving the qualification rate and the safety performance of the product.
The above description is only an example of the present invention, and those skilled in the art will understand that any equivalent structure design of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A pole lug flattening method of a full-pole-lug cylindrical lithium battery is characterized by comprising the following steps:
step one, conveying a processed winding battery cell (1) of the cylindrical lithium battery to a kneading machine, wherein the two ends of the winding battery cell are respectively provided with a full lug (11), and the full lug (11) at each end corresponds to a kneading flat head (3) of the kneading machine;
step two, kneading a flat sleeve (2) on the outer sleeve of the full tab (11);
step three, the kneading flat head (3) rotates and approaches to the kneading flat sleeve (2) at the same time, directly rolls and acts on the kneading flat sleeve (2) after contacting the kneading flat sleeve, drives the kneading flat sleeve (2) to elastically deform, transmits the rolling force to act on the full tab (11), and further rolls and flattens the full tab (11);
step four, after the full lug (11) is kneaded flatly, the kneading flathead (3) drives the kneading flatly-sleeved sleeve (2) to leave the winding battery core (1), and the kneading flatly-sleeved sleeve (2) is elastically reset;
and step five, kneading and flattening the full tab (11) of the next winding battery cell (1) again according to the sequence from the step one to the step four, thereby forming a circulating kneading and flattening work.
2. The pole ear flattening method for the full-pole ear cylindrical lithium battery as claimed in claim 1, characterized in that the flattening sleeve (2) is a wear-resistant elastic sleeve.
3. The pole ear flattening method of the full pole ear cylindrical lithium battery as claimed in claim 1, characterized in that the flattening sleeve (2) is fitted around the end of the winding cell (1) and completely covers the full pole ear (11).
4. The pole ear flattening method for the full-pole ear cylindrical lithium battery as claimed in claim 1, characterized in that the flattening sleeve (2) is provided with an inner chamfer (21) which is in circumferential contact with the top of the full-pole ear (11).
5. The pole lug flattening method for the full-pole lug cylindrical lithium battery as claimed in claim 1, wherein the flattening sleeve is rolled by the flattening roller (31) of the flattening head (3) to drive the elastic deformation so as to transmit the rolling force to the full-pole lug (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801079.8A CN113560369B (en) | 2021-07-15 | 2021-07-15 | Electrode lug flattening method for full-electrode-lug cylindrical lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801079.8A CN113560369B (en) | 2021-07-15 | 2021-07-15 | Electrode lug flattening method for full-electrode-lug cylindrical lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN113560369A true CN113560369A (en) | 2021-10-29 |
| CN113560369B CN113560369B (en) | 2023-03-28 |
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| CN202110801079.8A Active CN113560369B (en) | 2021-07-15 | 2021-07-15 | Electrode lug flattening method for full-electrode-lug cylindrical lithium battery |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206180015U (en) * | 2016-09-30 | 2017-05-17 | 深圳市瑞恩维思新能源科技有限公司 | Crew cut is rubbed to electricity core |
| CN206415447U (en) * | 2016-12-20 | 2017-08-18 | 珠海银隆新能源有限公司 | A kind of lug apparatus for shaping of the full lug battery core of cylindrical battery |
| WO2017163932A1 (en) * | 2016-03-24 | 2017-09-28 | 三洋電機株式会社 | Nonaqueous electrolyte secondary battery |
| CN107394248A (en) * | 2017-07-18 | 2017-11-24 | 武汉逸飞激光设备有限公司 | Rub leveling device in a kind of battery core end face |
| CN107824633A (en) * | 2017-10-30 | 2018-03-23 | 辽宁科技大学 | A kind of manual frock and method flattened for Soft Roll electrokinetic cell lug |
| CN209969236U (en) * | 2019-03-15 | 2020-01-21 | 湖南盖亚中科新能源有限公司 | Cylinder is utmost point ear battery utmost point ear and is leveled device |
| CN110718665A (en) * | 2019-09-24 | 2020-01-21 | 国轩新能源(庐江)有限公司 | Lithium battery pole lug combined flattening method |
| CN111048824A (en) * | 2020-03-18 | 2020-04-21 | 江苏时代新能源科技有限公司 | Battery cell end face shaping device |
| CN112453109A (en) * | 2020-11-26 | 2021-03-09 | 江苏逸飞激光设备有限公司 | Automatic kneading and flattening equipment |
| CN113113735A (en) * | 2021-04-16 | 2021-07-13 | 惠州亿纬锂能股份有限公司 | Kneading and flattening device |
-
2021
- 2021-07-15 CN CN202110801079.8A patent/CN113560369B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017163932A1 (en) * | 2016-03-24 | 2017-09-28 | 三洋電機株式会社 | Nonaqueous electrolyte secondary battery |
| CN206180015U (en) * | 2016-09-30 | 2017-05-17 | 深圳市瑞恩维思新能源科技有限公司 | Crew cut is rubbed to electricity core |
| CN206415447U (en) * | 2016-12-20 | 2017-08-18 | 珠海银隆新能源有限公司 | A kind of lug apparatus for shaping of the full lug battery core of cylindrical battery |
| CN107394248A (en) * | 2017-07-18 | 2017-11-24 | 武汉逸飞激光设备有限公司 | Rub leveling device in a kind of battery core end face |
| CN107824633A (en) * | 2017-10-30 | 2018-03-23 | 辽宁科技大学 | A kind of manual frock and method flattened for Soft Roll electrokinetic cell lug |
| CN209969236U (en) * | 2019-03-15 | 2020-01-21 | 湖南盖亚中科新能源有限公司 | Cylinder is utmost point ear battery utmost point ear and is leveled device |
| CN110718665A (en) * | 2019-09-24 | 2020-01-21 | 国轩新能源(庐江)有限公司 | Lithium battery pole lug combined flattening method |
| CN111048824A (en) * | 2020-03-18 | 2020-04-21 | 江苏时代新能源科技有限公司 | Battery cell end face shaping device |
| CN112453109A (en) * | 2020-11-26 | 2021-03-09 | 江苏逸飞激光设备有限公司 | Automatic kneading and flattening equipment |
| CN113113735A (en) * | 2021-04-16 | 2021-07-13 | 惠州亿纬锂能股份有限公司 | Kneading and flattening device |
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| Publication number | Publication date |
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| CN113560369B (en) | 2023-03-28 |
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Effective date of registration: 20220825 Address after: Floor-1, No. 4-1, Building 3, No. 21, Minjiang Road, Xinqi Street, Beilun District, Ningbo City, Zhejiang Province 315800 Applicant after: Ningbo Jiuju Intelligent Equipment Co.,Ltd. Address before: 315103 188 Jinghua Road, Ningbo high tech Zone, Zhejiang (1606 tower, 041 block B block, modern building, Ningbo harbour). Applicant before: NINGBO JIUDING NEW ENERGY TECHNOLOGY Co.,Ltd. |
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