CN1862867A - Method for rolling electric core of cylindrical lithium ion battery, electric core and battery - Google Patents
Method for rolling electric core of cylindrical lithium ion battery, electric core and battery Download PDFInfo
- Publication number
- CN1862867A CN1862867A CNA2005100208994A CN200510020899A CN1862867A CN 1862867 A CN1862867 A CN 1862867A CN A2005100208994 A CNA2005100208994 A CN A2005100208994A CN 200510020899 A CN200510020899 A CN 200510020899A CN 1862867 A CN1862867 A CN 1862867A
- Authority
- CN
- China
- Prior art keywords
- core
- lithium ion
- pin
- ion battery
- positive
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005096 rolling process Methods 0.000 title description 2
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
-
- 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
Abstract
This invention relates to battery core and battery of pillar type lithium ion battery. The core includes wrap core, pillar matter is set inner of the core, mouth is opened on lateral side of the matter, the wrap core is formed by positive and negative pole pieces and one end of the membrane wrapped around the pillar matter. This invention also discloses the wind method, procedures are that 1) membrane and pillar matter are telescoped on the coil main pin. 2) Side pin is inserted into the pin hole of the main pin. 3) Positive and negative pole pieces are added on the membrane. 4) The main pin is rotated to wind the pieces and membrane on the pillar. 5) The coil pin is extracted from the pillar make electric core body. The electric core body can be more compact winded by this invention, and the battery periodicity and consistency are improved.
Description
[technical field]
The present invention relates to a kind of method for winding of electric core, electric core and battery, be specifically related to a kind of method for winding, electric core and battery of cylindrical lithium ion battery electricity core.
[background technology]
Along with developing rapidly of electronics industry, information industry, people are more and more higher to the requirement of all kinds of appliances power sources.Column lithium ion battery is widely applied to all kinds of places as high capacity power source, especially is applied in the notebook computer, and this fail safe to battery, reliability requirement are very high.
Positive plate, negative plate and barrier film are just contained in the electric in-core portion of the column lithium ion battery of selling on the existing market, do not contain other inner matters.There is following deficiency in this electric core: 1, in the process of making battery, the barrier film of volume core center is easily burnt out by resistance welding head during the weldering positive pole ear, causes the pole piece short circuit.2, the volume core of cylindrical lithium ion battery all is to make by the mode of reeling, also make the middle space that has certain diameter of volume core just because of coiling, the positive plate that the existence in space makes the volume in-core portion of cylindrical lithium ion battery be separated by barrier film contacts not tight with negative plate, and then influences the performance performance of battery.As battery pole piece in cyclic process easy part, have approximately pole piece about 0.2% in charge and discharge process at the center of electric core part; Battery is no platform etc. between charge and discharge cycles 4.2 ~ 4.0V, and the cycle performance and the consistency of battery are poor.
[summary of the invention]
One of purpose of the present invention provides a kind of lug welding that both can make things convenient for, and can not damage pole piece, can improve cyclicity and the conforming column lithium ion battery electricity core and the battery of battery again.
Another object of the present invention provides a kind of method for winding of above-mentioned column lithium ion battery electricity core.
Above-mentioned purpose is achieved in that
A kind of electric core of column lithium ion battery, comprise by positive plate, negative plate and the membrane coil between positive plate and negative plate around the volume core that forms, the inside of volume core is placed with cylindric thing, there is opening the side of cylindric thing, and described volume core is back wall in the end insertion opening of positive and negative plate and barrier film thereof to be reeled around cylindric thing form.
A kind of column lithium ion battery, comprise by positive plate, negative plate and the membrane coil between positive plate and negative plate around the volume core that forms, the inside of volume core is placed with cylindric thing, there is opening the side of cylindric thing, and described volume core is back wall in the end insertion opening of positive and negative plate and barrier film thereof to be reeled around cylindric thing form.
A kind of column lithium ion battery electricity core body method for winding is made up of following steps: 1) be inserted in barrier film and open circles tubular article on volume pin master pin; 2) secondary pin is inserted in the pin hole of volume pin master pin; 3) on barrier film, add positive and negative plate; 4) rotate volume pin master pin with positive and negative plate and membrane coil on described cylindric thing; 5) extract the volume pin in the cylindric thing out and make electric core body.
Beneficial effect of the present invention is: 1) because the electric in-core of column lithium ion battery has the existence of cylindric thing; particularly adopt stainless steel; when the weldering positive pole ear,, in the process of carrying out electric resistance welding, can not damage any part because electric core centre bit is equipped with cylindric thing and protects.2) before reeling, inserted cylindric thing, simple, quick, do not have follow-up add cylindric thing operation easier high problem.3) because the electric in-core of column lithium ion battery has the existence of cylindric thing, it is tightr to make that column lithium ion battery internal positive sheet, barrier film contact with negative plate, helps improving the cycle performance and the consistency of battery.Show through actual detected: battery electrodeless part phenomenon in cyclic process exists, and battery has platform between charge and discharge cycles 4.2-4.0V, improved the cycle performance and the consistency of battery, has prolonged battery useful life and range of application.
Below in conjunction with accompanying drawing, the present invention is described in detail by embodiment.
[description of drawings]
Fig. 1 is a kind of core strueture schematic diagram of column lithium ion battery.
Fig. 2 is the structure enlarged diagram of tubular stainless steel steel core among Fig. 1
Fig. 3 a is the structure enlarged diagram of coiler device.
Fig. 3 b is the A-A profile of Fig. 3 a.
Fig. 3 c is the B portion enlarged drawing of Fig. 3 a.
Fig. 4 is the electric core winding schematic diagram of column lithium ion battery.
[embodiment]
A kind of electric core of column lithium ion battery, as depicted in figs. 1 and 2, comprise volume core 2 and cylindric stainless steel steel core 1, volume core 2 is a prior art, by positive plate, negative plate and the membrane coil between positive plate and negative plate around forming (among the figure draw), the inside of volume core 2 is provided with tubular stainless steel steel core 1, and there is opening 3 side of tubular stainless steel steel core 1, and opening is dentation opening (also can be V-arrangement, U-shaped or other shaped aperture).
The structure of coiler device is shown in Fig. 3 a, 3b, 3c, comprise main pin 5 and secondary pin 4, main pin 5 is provided with the opening 6 that is used to insert positive plate, negative plate, the central axis that is positioned at main pin 5 is provided with the pin hole 7 that is used to insert secondary pin 4, the front end of main pin 5 is half-cylindrical (shown in Fig. 3 c), the handgrip of secondary pin 4 is provided with the position, hole (drawing among the figure) that matches with this half round post, and it is worked as after secondary cushion becomes owner of pin, and secondary pin together rotates with main pin.
Above-mentioned column lithium ion battery electricity core body method for winding, as shown in Figure 3, Figure 4, forms by following steps: 1) be inserted in barrier film rolling up on the pin master pin 5, and be the center doubling with main pin; 2) on volume pin master pin 5, be inserted in opening steel core 1 again; 3) secondary pin 4 is inserted in the pin hole 7 of volume pin master pin 5; 4) on the A of the barrier film after doubling face and B face, add positive and negative plate respectively; 5) rotate volume pin master pin with positive and negative plate and membrane coil on described cylindric thing; 6) extract the volume pin in the cylindric thing out and promptly obtain electric core body.
According to actual needs, during making, both can be inserted in barrier film earlier, be inserted in cylindric thing again, also can be inserted in cylindric thing earlier, be inserted in barrier film again.
In addition, cylindric thing also can adopt as other rigid supporters such as polyethylene except adopting stainless steel structure, as long as rigid supporter does not react with electrolyte.
Claims (9)
1, a kind of electric core of column lithium ion battery comprises that by positive plate, negative plate and the membrane coil between positive plate and negative plate around the volume core that forms, it is characterized in that: the inside of described volume core is placed with cylindric thing.
2, the electric core of column lithium ion battery according to claim 1, it is characterized in that: there is opening the side of described cylindric thing, and described volume core is that the end with positive and negative plate and barrier film thereof inserts in the opening back wall and reels around cylindric thing and form.
3, the electric core of column lithium ion battery as claimed in claim 1 or 2, it is characterized in that: described cylindric thing is a stainless steel.
4, the electric core of column lithium ion battery as claimed in claim 1 or 2 is characterized in that: described cylindric thing is a polyethylene.
5, a kind of column lithium ion battery comprises that by positive plate, negative plate and the membrane coil between positive plate and negative plate around the volume core that forms, it is characterized in that: the inside of described volume core is placed with cylindric thing.
6, as column lithium ion battery as described in the claim 5, it is characterized in that: there is opening the side of described cylindric thing, and described volume core is that the end with positive and negative plate and barrier film thereof inserts in the opening back wall and reels around cylindric thing and form.
7, as column lithium ion battery as described in claim 5 or 6, it is characterized in that: described cylindric thing is a stainless steel.
8, as column lithium ion battery as described in claim 5 or 6, it is characterized in that: described cylindric thing is a polyethylene.
9, a kind of column lithium ion battery electricity core body method for winding is made up of following steps: 1) be inserted in barrier film and open circles tubular article on volume pin master pin; 2) secondary pin is inserted in the pin hole of volume pin master pin; 3) on barrier film, add positive and negative plate; 4) rotate volume pin master pin with positive and negative plate and membrane coil on described cylindric thing; 5) extract the volume pin in the cylindric thing out and make electric core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100208994A CN1862867A (en) | 2005-05-12 | 2005-05-12 | Method for rolling electric core of cylindrical lithium ion battery, electric core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100208994A CN1862867A (en) | 2005-05-12 | 2005-05-12 | Method for rolling electric core of cylindrical lithium ion battery, electric core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1862867A true CN1862867A (en) | 2006-11-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100208994A Pending CN1862867A (en) | 2005-05-12 | 2005-05-12 | Method for rolling electric core of cylindrical lithium ion battery, electric core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1862867A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707264B (en) * | 2009-07-02 | 2013-07-03 | 宁波维科电池有限公司 | Method for winding pole piece of lithium ion battery and winding device thereof |
| CN106532136A (en) * | 2016-12-12 | 2017-03-22 | 惠州Tcl金能电池有限公司 | Square flexibly-packaged battery and manufacturing method therefor |
| CN107768737A (en) * | 2017-11-24 | 2018-03-06 | 天津冶金职业技术学院 | A kind of 3mm battery electrodes core coiling frock |
| CN115133100A (en) * | 2022-09-02 | 2022-09-30 | 苏州宇量电池有限公司 | Winding battery cell, preparation method, battery comprising winding battery cell and assembly method |
| WO2023005502A1 (en) * | 2021-07-30 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Winding needle sleeve, battery cell, battery, power consuming device and winding device |
-
2005
- 2005-05-12 CN CNA2005100208994A patent/CN1862867A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707264B (en) * | 2009-07-02 | 2013-07-03 | 宁波维科电池有限公司 | Method for winding pole piece of lithium ion battery and winding device thereof |
| CN106532136A (en) * | 2016-12-12 | 2017-03-22 | 惠州Tcl金能电池有限公司 | Square flexibly-packaged battery and manufacturing method therefor |
| CN107768737A (en) * | 2017-11-24 | 2018-03-06 | 天津冶金职业技术学院 | A kind of 3mm battery electrodes core coiling frock |
| WO2023005502A1 (en) * | 2021-07-30 | 2023-02-02 | 宁德时代新能源科技股份有限公司 | Winding needle sleeve, battery cell, battery, power consuming device and winding device |
| CN115133100A (en) * | 2022-09-02 | 2022-09-30 | 苏州宇量电池有限公司 | Winding battery cell, preparation method, battery comprising winding battery cell and assembly method |
| CN115133100B (en) * | 2022-09-02 | 2022-12-16 | 苏州宇量电池有限公司 | Winding battery cell, preparation method, battery comprising winding battery cell and assembly method |
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