CN206022517U - A kind of winding type lithium battery pole piece of anti-lug fold - Google Patents
A kind of winding type lithium battery pole piece of anti-lug fold Download PDFInfo
- Publication number
- CN206022517U CN206022517U CN201621073334.2U CN201621073334U CN206022517U CN 206022517 U CN206022517 U CN 206022517U CN 201621073334 U CN201621073334 U CN 201621073334U CN 206022517 U CN206022517 U CN 206022517U
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- Prior art keywords
- lug
- pole piece
- cutting
- lithium battery
- joint
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
A kind of winding type lithium battery pole piece of anti-lug fold of this utility model, including pole piece body and the lug in pole piece body side by cut, the length direction on the lug along lug offers at least one joint-cutting.Shearing stress when lug crosses roller can be both discharged, the integrity and conveyance capacity of lug had been can ensure that again, the effect for preventing lug from crossing roller fold and turnover had been can achieve, the characteristics of with simple structure, easily operated, effect is significant.
Description
Technical field
This utility model is related to technical field of lithium batteries, and in particular to a kind of coiling type lithium battery pole of anti-lug fold
Piece.
Background technology
In lithium ion battery pole piece typically by the material mixing such as electroactive substance, conductive agent, adhesive agent, diluent into
Pulp-like, then be coated on pole piece substrate material aluminium foil or Copper Foil in modes such as ink-jet, extruding, printing transfers, then through drying
The roasting slurry curing for making coating, then the slurry material of coating is compacted through roll-in, finally by according to the pole made needed for battery
Piece size is cut.
At present, in the production process of aluminum hull rectangular cell, takeup type core can reduce producing into improve production efficiency
This, is widely used.It is that lug is processed in one end of pole piece using laser butt formula first in its course of processing, then is applied
Cloth active material slurry, cured, roll-in, is wound into a roll wound core.The lug that is wherein processed using laser butt formula is not only
The conveyance capacity of lug can be improved, also increased the flatness of pole piece, but the pole piece of laser butt formula processing is when roll-in is crossed
The shearing force of non-uniform Distribution can be produced on lug, easily produced situations such as fold, turnover by small sample perturbations, so as to affect
The processing characteristicies such as the follow-up winding of pole piece.The lug of turnover easily produces breach in lug root simultaneously, easily breaks during winding
Band, has a strong impact on production efficiency and yields.
For problem above, roll-in is carried out to which using the roller using major diameter generally at present, and is installed additional on roller
Flattening device, its installation cost are high, and process is loaded down with trivial details, and can not be fully solved the turnover problem of lug.
Utility model content
For the problems referred to above, this utility model provides a kind of winding type lithium battery pole piece of anti-lug fold, both ensure that
The conveyance capacity and integrity of pole piece, but energy effectively solving lug crosses roller fold turnover problem.
A kind of winding type lithium battery pole piece of anti-lug fold, passes through laser including pole piece body and in pole piece body side
The lug of cutting, the length direction on the lug along lug offer at least one joint-cutting.
Further scheme, described joint-cutting one end are located at the centre that pole piece body and lug junction, the other end are located at lug.
Further scheme, the length of the joint-cutting are the 1/3-2/3 of lug height, and the width of joint-cutting is less than 0.6mm.
Further scheme, the angle between the joint-cutting and pole piece body is 70 ° -110 °.
Further scheme, the joint-cutting are processed using laser or cutting knife.
Further scheme, the slit end portion positioned at pole piece body Yu lug junction offer cut hole, the cut hole partly
Footpath is 1-3mm.
This utility model offers joint-cutting on lug, i.e., form a free boundary on lug, inside release lug
Shearing stress, so as to make its internal shearing stress uniform when lug crosses roll-in, lug when preventing from crossing roll-in in the pole piece course of processing
Fold is turned down.
Compared with using flattening device, this utility model is opened joint-cutting on lug and can eliminate the planted agent for causing lug fold
Power, effectively solving lug cross roller turnover problem；And without the need for changing up- coiler, be not required to increase extras；Furthermore it is also possible to protect
The integrity and conveyance capacity of card lug, does not affect battery performance.
Description of the drawings
Drawings below of the present utility model is used for understanding this utility model in this as a part of the present utility model.Accompanying drawing
In show embodiment of the present utility model and its description, for understanding principle of the present utility model.
Fig. 1 is the first structural representation of the present utility model,
Fig. 2 is second structural representation of the present utility model,
Fig. 3 is the third structural representation of the present utility model.
Specific embodiment
Embodiment 1
As shown in figure 1, a kind of winding type lithium battery pole piece of anti-lug fold, including pole piece body 2 and in pole piece body
Lug 1 of the side by cut, the length direction on the lug 1 along lug offer a joint-cutting 11.
Further scheme, 11 one end of the joint-cutting are located at pole piece body 2 and are located at lug 1 with 1 junction of lug, the other end
Middle.
Further scheme, the 1/3-2/3 of the length of the joint-cutting 11 for 1 height of lug, the width of joint-cutting 11 are less than
0.6mm.
Further scheme, the angle between the joint-cutting 11 and pole piece body 2 is 70 ° -110 °.
Further scheme, the joint-cutting are processed using laser or cutting knife.
Embodiment 2：
As shown in Fig. 2 a kind of winding type lithium battery pole piece of anti-lug fold, including pole piece body 2 and in pole piece body
Lug 1 of the side by cut, the length direction on the lug 1 along lug offer two joint-cuttings 11, its
It is uniformly distributed on the width of lug 1.
Embodiment 3：
As shown in figure 3, a kind of winding type lithium battery pole piece of anti-lug fold, including pole piece body 2 and in pole piece body
Lug 1 of the side by cut, the length direction on the lug 1 along lug offer a joint-cutting 11, are located at
Pole piece body 2 offers cut hole 12 with 11 end of joint-cutting of 1 junction of lug, and the radius of the cut hole 12 is 1-3mm.
The preferred embodiment of this utility model patent is the foregoing is only, is not used for limiting enforcement model of the present utility model
Enclose；I.e. all various equivalents that is done according to right of the present utility model, are claim of the present utility model
Scope.
Claims (6)
1. a kind of winding type lithium battery pole piece of anti-lug fold, is cut including pole piece body and in pole piece body side by laser
The lug for cutting, it is characterised in that：Length direction on the lug along lug offers at least one joint-cutting.
2. the winding type lithium battery pole piece of a kind of anti-lug fold according to claim 1, it is characterised in that：The joint-cutting
One end is located at the centre that pole piece body and lug junction, the other end are located at lug.
3. the winding type lithium battery pole piece of a kind of anti-lug fold according to claim 2, it is characterised in that：The joint-cutting
Length for lug height 1/3-2/3, the width of joint-cutting is less than 0.6mm.
4. the winding type lithium battery pole piece of a kind of anti-lug fold according to claim 2, it is characterised in that：The joint-cutting
It it is 70 ° -110 ° with the angle between pole piece body.
5. the winding type lithium battery pole piece of a kind of anti-lug fold according to claim 1, it is characterised in that：The joint-cutting
Processed using laser or cutting knife.
6. the winding type lithium battery pole piece of a kind of anti-lug fold according to claim 1, it is characterised in that：It is located at pole piece
Body offers cut hole with the slit end portion of lug junction, and the radius of the cut hole is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621073334.2U CN206022517U (en) | 2016-09-22 | 2016-09-22 | A kind of winding type lithium battery pole piece of anti-lug fold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621073334.2U CN206022517U (en) | 2016-09-22 | 2016-09-22 | A kind of winding type lithium battery pole piece of anti-lug fold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206022517U true CN206022517U (en) | 2017-03-15 |
Family
ID=58261219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621073334.2U Active CN206022517U (en) | 2016-09-22 | 2016-09-22 | A kind of winding type lithium battery pole piece of anti-lug fold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206022517U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057502A1 (en) * | 2018-09-18 | 2020-03-26 | 宁德时代新能源科技股份有限公司 | Electrode plate forming device and electrode plate forming method |
| CN114388743A (en) * | 2021-12-28 | 2022-04-22 | 天津力神电池股份有限公司 | Optimized preparation method of cylindrical lithium ion battery pole group |
| CN114614211A (en) * | 2022-03-22 | 2022-06-10 | 东莞新能安科技有限公司 | Electrochemical device, battery module, and electronic device |
| CN114709571A (en) * | 2022-03-25 | 2022-07-05 | 东莞市振华新能源科技有限公司 | Tab structure for reducing internal resistance of lithium battery and lithium battery |
| WO2022233050A1 (en) * | 2021-05-07 | 2022-11-10 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery, device, and manufacturing method for electrode assembly |
| CN115555852A (en) * | 2021-06-30 | 2023-01-03 | 宁德时代新能源科技股份有限公司 | Pole piece forming method and equipment |
| WO2023124570A1 (en) * | 2021-12-30 | 2023-07-06 | 珠海冠宇电池股份有限公司 | Pole piece, roll core, and battery |
| WO2023130785A1 (en) * | 2022-01-07 | 2023-07-13 | 宁德时代新能源科技股份有限公司 | Electrode sheet, electrode assembly, battery cell, battery and electric apparatus |
-
2016
- 2016-09-22 CN CN201621073334.2U patent/CN206022517U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057502A1 (en) * | 2018-09-18 | 2020-03-26 | 宁德时代新能源科技股份有限公司 | Electrode plate forming device and electrode plate forming method |
| WO2022233050A1 (en) * | 2021-05-07 | 2022-11-10 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery, device, and manufacturing method for electrode assembly |
| CN115555852A (en) * | 2021-06-30 | 2023-01-03 | 宁德时代新能源科技股份有限公司 | Pole piece forming method and equipment |
| CN115555852B (en) * | 2021-06-30 | 2023-06-30 | 宁德时代新能源科技股份有限公司 | Pole piece forming method and device |
| US11848436B2 (en) | 2021-06-30 | 2023-12-19 | Contemporary Amperex Technology Co., Limited | Method and apparatus of forming electrode plate |
| CN114388743A (en) * | 2021-12-28 | 2022-04-22 | 天津力神电池股份有限公司 | Optimized preparation method of cylindrical lithium ion battery pole group |
| CN114388743B (en) * | 2021-12-28 | 2023-08-25 | 天津力神电池股份有限公司 | Optimized preparation method of cylindrical lithium ion battery pole group |
| WO2023124570A1 (en) * | 2021-12-30 | 2023-07-06 | 珠海冠宇电池股份有限公司 | Pole piece, roll core, and battery |
| WO2023130785A1 (en) * | 2022-01-07 | 2023-07-13 | 宁德时代新能源科技股份有限公司 | Electrode sheet, electrode assembly, battery cell, battery and electric apparatus |
| CN114614211A (en) * | 2022-03-22 | 2022-06-10 | 东莞新能安科技有限公司 | Electrochemical device, battery module, and electronic device |
| CN114614211B (en) * | 2022-03-22 | 2024-01-23 | 东莞新能安科技有限公司 | Electrochemical device, battery module and electronic device |
| CN114709571A (en) * | 2022-03-25 | 2022-07-05 | 东莞市振华新能源科技有限公司 | Tab structure for reducing internal resistance of lithium battery and lithium battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |