CN102208604A - Preparation method of electrode sheet without external tab of coiled lithium ion battery - Google Patents
Preparation method of electrode sheet without external tab of coiled lithium ion battery Download PDFInfo
- Publication number
- CN102208604A CN102208604A CN2010101453513A CN201010145351A CN102208604A CN 102208604 A CN102208604 A CN 102208604A CN 2010101453513 A CN2010101453513 A CN 2010101453513A CN 201010145351 A CN201010145351 A CN 201010145351A CN 102208604 A CN102208604 A CN 102208604A
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- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- electrode sheet
- coiled lithium
- collector
- 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.)
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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
Abstract
The invention relates to a preparation method of an electrode sheet without external tabs of a coiled lithium ion battery. The electrode sheet is prepared by coiling a current collector coated with an active substance; a blank part is left on the current collector during the coating process, and the blank part is cut to prepare a lead-out end for the positive and negative electrodes; and the current collector is processed by a coiling process. Compared with a conventional electrode sheet welded with a tab, the electrode sheet of an coiled lithium ion battery prepared by the present method saves the welding operation during the manufacturing process. The elimination of an additionally-welded tab also saves the space required for electrode sheet coiling, which facilitates the improvement of the capacity and the cycle performance of the battery, and the increase of the consistency of the battery, and is more adaptable to the requirement of high-rate discharge of the battery.
Description
Technical field
The nothing that the present invention relates to a kind of coiled lithium ion battery adds the preparation method of lug formula pole piece.
Background technology
Coiled lithium ion battery has been widely used in particularly in the utilization of automotive field, more and more receiving the concern of various countries on the various large power-consuming equipments at present.Battery needs to bear heavy-current discharge as automobile-used power source, also good consistency and cycle performance will be arranged.In the production method of the pole piece of traditional coiled lithium ion battery, need not be coated with lug in the blank space welding of active material at collector, be welded on the battery case as the both positive and negative polarity leading-out terminal then, this mode has influenced the performance of lithium ion battery performance to a certain extent, in addition pole piece when reeling tightness and the space of battery also be affected.
Summary of the invention
The technical problem to be solved in the present invention is: influence the performance of battery performance in order to solve at present on the pole piece of coiled lithium ion battery soldering polar ear, influence simultaneously pole piece when reeling tightness and the problem of battery space, the nothing that the spy discloses a kind of coiled lithium ion battery adds the preparation method of lug formula pole piece.
The technical solution adopted for the present invention to solve the technical problems is: a kind of nothing of coiled lithium ion battery adds the preparation method of lug formula pole piece, pole piece is coated with active material after coiling is made by collector, in coating process to the collector part that leaves some space, then to staying white part to carry out cutting, to make the exit of both positive and negative polarity, then collector is carried out the winding process operation.
In order to enhance productivity, economical with materials cost simultaneously during cutting, stays whitely to cut out exit at the middle part of collector, stay white part both sides coating active material, and collector is divided into two from the middle part after the cutting.
A kind of nothing that is used for coiled lithium ion battery adds lug formula pole piece, adopts aforesaid method to make.
The invention has the beneficial effects as follows: the pole piece of the coiled lithium ion battery of being made by this method has been saved welding sequence than the pole piece of traditional soldering polar ear in manufacture process; Cancellation required space when the lug of welding has simultaneously also been saved pole piece coiling separately helps improving the capacity and the cycle performance of battery, also helps improving the consistency of battery, more can adapt to the needs of high-rate battery discharge.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation that the nothing of coiled lithium ion battery adds lug formula pole piece among the present invention (an expansion shape).
Among the figure: 1. collector 2. exits
Embodiment
A kind of nothing of coiled lithium ion battery adds the preparation method of lug formula pole piece, pole piece is coated with active material after coiling is made by collector 1, in coating process to collector 1 part that leaves some space, then to staying white part to carry out cutting, with the exit 2 of making both positive and negative polarity, then collector 1 is carried out the winding process operation.
During cutting, stay whitely to cut out exit 2 at the middle part of collector 1, stay white part both sides coatings active material, collector 1 is divided into two from the middle part after the cutting.Can adopt sawtooth waveform or square waveform cutting mode or other cutting modes to the cutting of staying white part of making exit.
A kind of nothing that is used for coiled lithium ion battery adds lug formula pole piece, as shown in Figure 1, adopts aforesaid method to make.
Claims (3)
1. the nothing of a coiled lithium ion battery adds the preparation method of lug formula pole piece, pole piece is coated with active material after coiling is made by collector (1), it is characterized in that: in coating process to collector (1) part that leaves some space, then to staying white part to carry out cutting, with the exit (2) of making both positive and negative polarity, then collector (1) is carried out the winding process operation.
2. the nothing of coiled lithium ion battery according to claim 1 adds the preparation method of lug formula pole piece, it is characterized in that: stay white at the middle part of collector (1) to cut out exit (2), stay white part both sides coating active material, collector after the cutting (1) is divided into two from the middle part.
3. a nothing that is used for coiled lithium ion battery adds lug formula pole piece, it is characterized in that: adopt the method for claim 1 to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101453513A CN102208604A (en) | 2010-03-30 | 2010-03-30 | Preparation method of electrode sheet without external tab of coiled lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101453513A CN102208604A (en) | 2010-03-30 | 2010-03-30 | Preparation method of electrode sheet without external tab of coiled lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102208604A true CN102208604A (en) | 2011-10-05 |
Family
ID=44697328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101453513A Pending CN102208604A (en) | 2010-03-30 | 2010-03-30 | Preparation method of electrode sheet without external tab of coiled lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102208604A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529478A (en) * | 2014-09-29 | 2016-04-27 | 上海恒劲动力科技有限公司 | Fuel cell bipolar plate and electric pile constituted by same |
| WO2018001164A1 (en) * | 2016-06-27 | 2018-01-04 | 宁德时代新能源科技股份有限公司 | Cell and battery using same |
| CN112103456A (en) * | 2020-09-23 | 2020-12-18 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN113540400A (en) * | 2021-06-28 | 2021-10-22 | 大连中比动力电池有限公司 | Large-size cylindrical lithium ion secondary battery and positive and negative pole pieces thereof |
| CN115588748A (en) * | 2022-12-07 | 2023-01-10 | 四川启睿克科技有限公司 | Integrated device of battery and circuit board and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828984A (en) * | 2005-02-25 | 2006-09-06 | 古河电池株式会社 | Paste type plate manufacturing method and alkaline accumulator using same |
| CN101656330A (en) * | 2009-09-22 | 2010-02-24 | 南京双登科技发展研究院有限公司 | Method for making lithium-ion battery cells |
-
2010
- 2010-03-30 CN CN2010101453513A patent/CN102208604A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828984A (en) * | 2005-02-25 | 2006-09-06 | 古河电池株式会社 | Paste type plate manufacturing method and alkaline accumulator using same |
| CN101656330A (en) * | 2009-09-22 | 2010-02-24 | 南京双登科技发展研究院有限公司 | Method for making lithium-ion battery cells |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529478A (en) * | 2014-09-29 | 2016-04-27 | 上海恒劲动力科技有限公司 | Fuel cell bipolar plate and electric pile constituted by same |
| CN105529478B (en) * | 2014-09-29 | 2018-07-06 | 上海恒劲动力科技有限公司 | A kind of pile of fuel battery double plates and its composition |
| WO2018001164A1 (en) * | 2016-06-27 | 2018-01-04 | 宁德时代新能源科技股份有限公司 | Cell and battery using same |
| CN112103456A (en) * | 2020-09-23 | 2020-12-18 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN112103456B (en) * | 2020-09-23 | 2022-08-09 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
| CN113540400A (en) * | 2021-06-28 | 2021-10-22 | 大连中比动力电池有限公司 | Large-size cylindrical lithium ion secondary battery and positive and negative pole pieces thereof |
| CN115588748A (en) * | 2022-12-07 | 2023-01-10 | 四川启睿克科技有限公司 | Integrated device of battery and circuit board and preparation method thereof |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111005 |