CN202758981U - Coiling needle used for coiling pole shank of lithium battery - Google Patents
Coiling needle used for coiling pole shank of lithium battery Download PDFInfo
- Publication number
- CN202758981U CN202758981U CN2012202923243U CN201220292324U CN202758981U CN 202758981 U CN202758981 U CN 202758981U CN 2012202923243 U CN2012202923243 U CN 2012202923243U CN 201220292324 U CN201220292324 U CN 201220292324U CN 202758981 U CN202758981 U CN 202758981U
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- volume pin
- coiling
- pin
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- cross
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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
The utility model relates to the field of battery products, in particular to a coiling needle used for coiling a pole shank of a lithium battery. The coiling needle used for coiling the pole shank of the lithium battery comprises a first upper coiling needle, a first lower coiling needle, a second upper coiling needle and a second lower coiling needle, wherein after being fixed on a coiling needle fixing seat, the first upper coiling needle and the first lower coiling needle are capable of clamping a coil pole separation film, the lower edge of the second upper coiling needle and the upper edge of the first upper coiling needle are the same in length, the cross section of the second upper coiling needle is in a shape where the thickness at two ends is smaller than the thickness of the middle, and after fixed on the coiling needle fixing seat, the second upper coiling needle and the first upper coiling needle are capable of clamping the separation film of the pole shank and a coiling starting end of a cathode piece. The pole shank, coiled by the coiling needle, of the lithium battery is loose in the middle, the pressure on the separation film from an anode piece and a cathode piece when a first bending position is coiled is relieved, electrode pieces on the periphery are still compact and tight, and the performance of the battery is not affected.
Description
Technical field
The utility model relates to the battery product field, is specifically related to a kind of volume pin for the coiling Li-ion pole
Background technology
Along with developing rapidly of high and new technology, nowadays the various portable digital products such as digital camera, Digital Video, MP3, MP4 have been used widely, and as the power supply of above-mentioned portable digital product, and the demand of lithium battery is also increasing gradually.
Existing Li-ion pole is formed by coiling by anode pole piece, cathode pole piece and barrier film.And in the method for winding of existing Battery Pole Core, the curvature of the first bending place of reeling is the position of pole piece curvature maximum, it also is the place that barrier film bears positive plate and negative plate pressure maximum, pole piece easily bends angulation herein, if very easily piercing through barrier film herein, battery formed Li dendrite under abuse conditions causes short circuit, cause thermal runaway, this also is the potential safety issue of lithium ion battery.
For this reason, Chinese utility model patent 200420105442.4 specifications disclose a kind of Li-ion pole volume pin for the winding battery pole piece, it transversely has both ends and the pars intermedia between these both ends, and the thickness of at least one end is less than the thickness of pars intermedia.Although, utilize this volume pin that the curvature of the first bending place of the pole piece that winds is improved; But the situation that the barrier film in the first bending place bears positive plate and negative plate pressure maximum does not improve; Still there is the danger of battery short circuit in it
Summary of the invention
For overcoming defects, the purpose of this utility model namely is to provide a kind of volume pin for the coiling Li-ion pole.
The purpose of this utility model is achieved through the following technical solutions:
A kind of volume pin for the coiling Li-ion pole of the utility model cooperates with the volume pin holder of up-coiler, comprising: roll up volume pin and the second last volume pin on pin, the first last volume pin, second on first;
On described first, the respectively shape of cross section of the first last volume pin is laterally zygomorphic trapezoidal; This is on first, after the first last volume pin is fixed on the volume pin holder, but this on first, the first last volume pin clamping pole piece barrier film; The top equal in length of volume pin in the bottom and described first of volume pin on described second, the top equal in length of the top of described the second last volume pin and described the first last volume pin; The cross section of volume pin is both ends thickness less than the shape of pars intermedia thickness on described second, and its lateral profile can form smooth transition with this trapezoidal side edges of rolling up pin on first;
After the volume pin is rolled up pin on first and is fixed on this volume pin holder with this on described second, but the coiling head end of the barrier film of clamping pole piece and negative plate, the trapezoidal side edges that is camber lateral profile and this first last volume pin in the cross section of described the second last volume pin can form smooth transition; After this second last volume pin and this first last volume pin are fixed on this volume pin holder, but the coiling head end of the barrier film of clamping pole piece and positive plate.
Further, the lateral profile of the cross section of volume pin is camber on described second.
Further, the lateral profile of the cross section of volume pin is triangular in shape on described second.
Further, the lateral profile of the cross section of described the second last volume pin is camber.
Further, the lateral profile of the cross section of described the second last volume pin is triangular in shape.
Further, on described first, the dual-side of the trapezoidal cross-section of the first last volume pin is camber.
In the utility model, owing to being provided with and rolling up pin on second, the top equal in length of volume pin in the bottom and first of volume pin on second, make on second the volume pin cross section be both ends thickness less than the shape of the thickness of pars intermedia, its lateral profile can form smooth transition with this trapezoidal side edges of rolling up pin on first.Therefore, the centre of the Li-ion pole that is wound into volume pin of the present utility model is pine, has alleviated the pressure that bears positive/negative plate at the first bending place barrier film of reeling, simultaneously peripheral electrode slice still sturdy closely, can't affect the performance of battery.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is transverse sectional view of the present utility model;
Fig. 2 is use view of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1, the utility model should comprise on first rolls up pin 3, the first last volume pin 2, the second last volume pin 4 on the volume pin 1, second;
The cross section of volume pin 1 is trapezoidal on first, it is trapezoidal that the cross section of the first last volume pin 2 also is, and this on first, the first last volume pin 1,2 shape of cross section be symmetrical up and down, makes on first, the cross section behind the first last volume pin 1,2 longest edge amalgamation becomes the parallel hexagon of flat capable; The top equal in length of volume pin 1 in the bottom and first of volume pin 3 on second makes the trapezoidal side edges that is volume pin 1 on camber lateral profile and first in the cross section of volume pin 3 on second can form smooth transition; The following equal in length of the top of the second last volume pin 4 and the first last volume pin 2 makes the trapezoidal side edges that is camber lateral profile and the first last volume pin 2 in the cross section of the second last volume pin 4 can form smooth transition; This is after volume pin 1 is fixed on this volume pin holder on volume pin 3 and first on second, but this is rolled up on second in the bottom and first of pin 3 and rolls up the top clamping barrier film 5 of pin 1 and the coiling head end of negative plate 6; After this second last volume pin 4 and the first last volume pin 2 are fixed on this volume pin holder, but bottom's clamping barrier film 5 of the top of this second last volume pin 4 and the first last volume pin 2 and the coiling head end of positive plate 7.
Wherein, the side of the cross section of volume pin 1 also can be camber on first; The side of the first last volume pin 2 cross sections also can be camber; But on second the cross section of volume pin 3 also the both ends thickness of triangle, its cross section such as trapezoidal less than the shape of pars intermedia thickness; But the cross section of the second last volume pin 4 also the both ends thickness of triangle, its cross section such as trapezoidal less than the shape of pars intermedia thickness.
Please referring to Fig. 2, concrete using method of the present utility model is:
(1) the first last volume pin 2 is fixed on the volume pin holder of up-coiler;
(2) middle-end with barrier film 5 is tiled on the clamping face of the first last volume pin 2;
(3) volume pin 1 on first is fixed on the volume pin holder of up-coiler, makes on first, the first last volume pin 1,2 clamping barrier films 5;
(4) dextrorotation of volume pin holder turn 90 degrees to 180 degree;
(5) roll up between the pin 1 on the coiling head end insertion barrier film 5 and first with negative plate 6;
(6) volume pin 3 on second is fixed on the volume pin holder, makes the coiling head end of volume pin 1 on first and this volume pin 3 clamping barrier films 5 and negative plate 6 on second;
(7) the coiling head end with positive plate 7 inserts between barrier film 5 and the first last volume pin 2;
(8) the second last volume pin 4 is fixed on the volume pin holder, makes the coiling head end of the first last volume pin 2 and these the second last volume pin 4 clamping barrier films 5 and positive plate 7;
(9) volume pin holder continues the number of turns that coiling is set, and makes the pole piece that is wound into meet required size;
(10) take off the pole piece of reeling and finishing from the volume pin.
The above only is preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of doing within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection range of the present utility model
Claims (6)
1. a volume pin that is used for the coiling Li-ion pole cooperates with the volume pin holder of up-coiler, it is characterized in that, comprising: roll up volume pin and the second last volume pin on pin, the first last volume pin, second on first;
On described first, the respectively shape of cross section of the first last volume pin is laterally zygomorphic trapezoidal; This is on first, after the first last volume pin is fixed on the volume pin holder, but this on first, the first last volume pin clamping pole piece barrier film; The top equal in length of volume pin in the bottom and described first of volume pin on described second, the top equal in length of the top of described the second last volume pin and described the first last volume pin; The cross section of volume pin is both ends thickness less than the shape of pars intermedia thickness on described second, and its lateral profile can form smooth transition with this trapezoidal side edges of rolling up pin on first;
After the volume pin is rolled up pin on first and is fixed on this volume pin holder with this on described second, but the coiling head end of the barrier film of clamping pole piece and negative plate, the trapezoidal side edges that is camber lateral profile and this first last volume pin in the cross section of described the second last volume pin can form smooth transition; After this second last volume pin and this first last volume pin are fixed on this volume pin holder, but the coiling head end of the barrier film of clamping pole piece and positive plate.
2. the volume pin for the coiling Li-ion pole as claimed in claim 1 is characterized in that: the lateral profile of the cross section of volume pin is camber on described second.
3. the volume pin for the coiling Li-ion pole as claimed in claim 1 is characterized in that: the lateral profile of the cross section of volume pin is triangular in shape on described second.
4. the volume pin for the coiling Li-ion pole as claimed in claim 1, it is characterized in that: the lateral profile of the cross section of described the second last volume pin is camber.
5. the volume pin for the coiling Li-ion pole as claimed in claim 4, it is characterized in that: the lateral profile of the cross section of described the second last volume pin is triangular in shape.
6. such as each described volume pin for the coiling Li-ion pole in the claim 1 to 5, it is characterized in that: on described first, the dual-side of the trapezoidal cross-section of the first last volume pin is camber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202923243U CN202758981U (en) | 2012-06-21 | 2012-06-21 | Coiling needle used for coiling pole shank of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202923243U CN202758981U (en) | 2012-06-21 | 2012-06-21 | Coiling needle used for coiling pole shank of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758981U true CN202758981U (en) | 2013-02-27 |
Family
ID=47738146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202923243U Expired - Fee Related CN202758981U (en) | 2012-06-21 | 2012-06-21 | Coiling needle used for coiling pole shank of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987820A (en) * | 2017-05-31 | 2018-12-11 | 东莞市雅康精密机械有限公司 | Lithium cell winding device and its volume needle |
-
2012
- 2012-06-21 CN CN2012202923243U patent/CN202758981U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987820A (en) * | 2017-05-31 | 2018-12-11 | 东莞市雅康精密机械有限公司 | Lithium cell winding device and its volume needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20130621 |