CN102163733B - Battery cell winding method and equipment - Google Patents
Battery cell winding method and equipment Download PDFInfo
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- CN102163733B CN102163733B CN2011100229337A CN201110022933A CN102163733B CN 102163733 B CN102163733 B CN 102163733B CN 2011100229337 A CN2011100229337 A CN 2011100229337A CN 201110022933 A CN201110022933 A CN 201110022933A CN 102163733 B CN102163733 B CN 102163733B
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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 invention relates to a battery cell winding method and battery cell winding equipment. The battery cell winding method comprises the following steps of: transmitting two diaphragms to a winding needle, making the diaphragms pass through the winding needle partially, and separating the parts of the two diaphragms passing through the winding needle; and transmitting one of a positive plate and a negative plate to a position between the two diaphragms which pass through the winding needle, and transmitting the other of the positive and negative plates to a position between the two diaphragms which do not pass through the winding needle. A winding mechanism of the battery cell winding equipment comprises a winding needle, a pressing roller for matching the winding needle to finish the winding operation, and a diaphragm separating mechanism, wherein the diaphragm separating mechanism is used for separating the parts of the two diaphragms passing through the winding needle after the two diaphragms pass through the winding needle partially. When the battery cell is wound by adopting the battery cell winding method, two layers of diaphragms are distributed between the end parts of the positive and negative plates positioned in the center of the battery cell and adjacent electrodes, high insulativity is present between the electrodes, and a short circuit hardly occurs between the electrodes; moreover, the automation is easy to realize and the invention is suitable for various winding batteries.
Description
Technical field
The present invention relates to method for winding and the equipment of battery battery core.
Background technology
In the manufacturing process of coiled battery, two barrier films that need to will be superimposed with up-coiler, and be wound into cylindrical or oval by positive plate and the negative plate of these two barrier films isolation.Existing general way is to be enclosed within on the volume pin after the end with two barrier films is fixedly connected with, and then positive plate is placed on a slice barrier film, and negative plate is placed on another sheet barrier film, reels at last.The positive pole of the battery core that adopts the method to reel to form and negative pole only are distributed with one deck barrier film between the end of battery core center and adjacent electrode.Positive pole/the negative pole of general battery has wire netting or metal forming as collector, and in the process of pole piece trimming, the end of this metal currect collecting net is prone to burr.Therefore, the centre insulation effect of the battery core that above-mentioned method for winding winds is poor, is prone to short circuit phenomenon.
Summary of the invention
The purpose of this invention is to provide a kind of electric core winding method that two-layer barrier film isolation is arranged that makes between the end of the negative or positive electrode at battery core center and adjacent electrode when the coiling battery core.
Another object of the present invention is to provide a kind of cell winding device of realizing above-mentioned electric core winding method.
Technical scheme of the present invention is: a kind of electric core winding method comprises the following steps: at first, two barrier films are sent to volume pin place, and part passes the volume pin, then two barrier films are passed the part of described volume pin separately.At last, a slice in positive plate and negative plate is sent to volume pin place, is located between two barrier films that pass described volume pin, another sheet in described positive plate and negative plate is sent to volume pin place, be located between two barrier films that do not pass described volume pin.Wherein, the length of barrier film of passing the volume pin must satisfy after coiling work is completed, and is isolated by two-layer barrier film between in positive plate and negative plate one or whole leading section and adjacent electrode.
A kind of cell winding device comprises winding mechanism, and described winding mechanism comprises the volume pin, is used for coordinating with described volume pin completing pressure roller and the membrane separation mechanism of coiling work.The part that described membrane separation mechanism is used for after two membrane portions are passed described volume pin, two barrier films being passed described volume pin separately.
Can make the two-layer barrier film that distributes when adopting electric core winding method coiling battery core of the present invention between the end of the positive plate at battery core center or negative plate and adjacent electrode, good insulating between electrode, be not prone to short circuit phenomenon, and easily be automated, be applicable to various types of coiled batteries, be specially adapted to configure the coiled battery of metal currect collecting net.Use the cell winding device mechanical action of the method simple, stability and reliability are high.
Description of drawings
Fig. 1 is the framework schematic diagram of cell winding device of the present invention.
Fig. 2 (a) is the method for winding schematic diagram of the cell winding device of an embodiment to Fig. 2 (d).
Fig. 3 (a) is the method for winding schematic diagram of the cell winding device of another embodiment to Fig. 3 (d).
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, structural principle of the present invention is described in further detail.
As shown in Figure 1, cell winding device of the present invention can automatically be completed the coiling work of battery core positive and negative electrode and barrier film, has a mechanical action simple, stability and the high characteristics of reliability.The two-layer barrier film that distributes between the end of the positive plate of center and negative plate and adjacent electrode of the battery core that coiling forms.This cell winding device mainly comprises anodal feed mechanism 110, negative pole feed mechanism 120, barrier film feed mechanism 130 and 140, and winding mechanism 150.Understandable, cell winding device comprises that also necessary control appliance controls its work.
Anodal feed mechanism 110 is used for providing the moulding positive plate to winding mechanism 150.Such as but not limited to, anodal feed mechanism 110 can comprise the charging tray that is rotationally connected with on support, be used for to load the positive pole band that is wound into plate-like, carbon plate for example also can comprise guide roller and be used for clamping and the positive pole band is pulled to the pair-roller traction machine structure etc. of winding mechanism 150.
Negative pole feed mechanism 120 is used for providing the moulding negative plate to winding mechanism 150.Such as but not limited to, negative pole feed mechanism 120 can mainly comprise two charging trays that are rotationally connected with on support, is respectively used to load the negative pole (for example lithium band) and the metal currect collecting net that are wound into plate-like.Negative pole feed mechanism 120 also can comprise for obtaining negative pole and currect collecting net from above-mentioned charging tray, negative pole and currect collecting net are closed film, make the roller press briquetting mechanism of the bonding formation Compound Negative of negative pole and currect collecting net pole piece, and the clamping and conveying device that is used for this Compound Negative pole piece is sent to winding mechanism 150.
Barrier film feed mechanism 130 and 140 is used for providing barrier film to winding mechanism 150.Such as but not limited to, barrier film feed mechanism 130 and 140 can comprise respectively a feed mechanism that is used for loading the charging tray of membrane coil and is used for barrier film is pulled to winding mechanism 150, as manipulator.
Winding mechanism 150 be used for respectively from anodal discharge mechanism 110, barrier film discharge mechanism 130,140 and negative pole shaping mechanism 120 obtain positive plate, barrier film and negative plate, and described positive plate, barrier film and negative plate are wound into tubular.Winding mechanism 150 mainly comprises volume pin 151, is used for coordinating to complete the pressure roller 153 of coiling work with described volume pin, and the part that is used for after two membrane portions are passed described volume pin, two barrier films the being passed described volume pin membrane separation mechanism 155 that separates.In work, a slice in positive plate and negative plate is sent between two barrier films that pass volume pin 151, and another sheet in positive plate and negative plate is sent between two barrier films that do not pass volume pin 151.Wherein, passing the length of the barrier film of rolling up pin and the position of positive and negative plate placement must satisfy after coiling work is completed, between in positive plate and negative plate one or whole leading section and adjacent electrode by two-layer barrier film isolation, like this good insulating between the electrode of the battery core that forms of coiling, be not prone to short circuit phenomenon.
Fig. 2 (a) shows structural representation and the operation principle thereof of the winding mechanism of one embodiment of the invention to Fig. 2 (d).This winding mechanism comprises volume pin 251, pressure roller 253 and as the wind pushing mechanism 255 of membrane separation mechanism.Wind pushing mechanism 255 is used for when volume pin 251 rotates to certain angle to the barrier film end air-supply of passing volume pin 251, the membrane portions of passing volume pin 251 with separation.In the present embodiment, wind pushing mechanism 255 comprises blower fan (not shown) and tracheae 2551.Wind pushing mechanism 255 volume pin 251 rotate to 45 degree when spending to 135 to the barrier film end air-supply of passing volume pin 251, this moment, two barrier film ratios were easier to separate.Understandable, in other embodiment, membrane separation mechanism can also be the vacuum generator that barrier film can be held or electrostatic generator etc., with two barrier films separately.
As shown in Fig. 2 (a), two barrier films 231 and 241 parts are passed volume pin 251, and barrier film passes the length of the part of volume pin 251 should be greater than half of volume pin 251 girths.As shown in Fig. 2 (b), the rotation of volume pin 251 rotates to 45 wind pushing mechanism 255 putting in blasts (volume pin 251 continues rotation) when spending at volume pin 251, and the barrier film end of passing the volume pin is blown open.As shown in Fig. 2 (c), the barrier film 231 that passes the volume pin when being blown to volume pin 251 upper pressure roller 253 press down, be resisted against on volume pin 251, barrier film 231 is pressed between pressure roller 253 and volume pin 251.Afterwards, positive plate 211 is sent to (between the barrier film that passes volume pin 251) on the barrier film 231 that passes the volume pin, and negative plate 221 is sent between the barrier film that does not pass the volume pin.Fig. 2 (d) has shown the reeling condition of battery core when volume pin 251 rotation 540 is spent, and can find out, two-layer barrier film is distributing between the positive plate 211 at battery core center and the end of negative plate 221 and the negative plate that is close to and positive plate.
Show structural representation and the operation principle thereof of the winding mechanism of another embodiment of the present invention to Fig. 3 (d) as Fig. 3 (a).This winding mechanism comprises volume pin 351, pressure roller 353 and as the backstop roller 355 of membrane separation mechanism.Backstop roller 355 is used for the long a slice barrier film of length that when volume pin 351 rotates on a certain angle between 0 to 180 degree backstop is passed the barrier film of volume pin 351, the membrane portions of passing volume pin 351 with separation.In the present embodiment, backstop roller 355 is one can stretch on frame or up and down or the roller that moves left and right.
As shown in Fig. 3 (a), two barrier films 331 and 341 parts are passed volume pin 251, and two barrier films to pass the length of part of volume pin different, during the rotation of volume pin, the shorter barrier film of length that passes the part of volume pin should be positioned at inner lane.The part that its septation 341 is passed the volume pin is longer, and its length is more preferably greater than half of volume pin girth and less than volume pin girth, with the end of realizing the wrapping up negative or positive electrode capacity that affects battery within reason again.As shown in Fig. 3 (b), the rotation of volume pin 351 rotates to 90 roller of backstop when spending 355 backstops at volume pin 351 and lives barrier film 341.Be sent on the barrier film 331 that passes the volume pin when volume pin 351 rotates to nearly 180 positive plates 311 when spending, be located between two barrier films that pass the volume pin, and positive plate 321 be sent between the barrier film that does not pass the volume pin.As shown in Fig. 3 (c), backstop roller 355 is removed, and pressure roller 253 is resisted against on volume pin 351.Fig. 3 (d) has shown the reeling condition of battery core when volume pin 351 rotation 540 is spent, and can find out, two-layer barrier film is distributing between the positive plate 311 at battery core center and the end of negative plate 321 and the negative plate that is close to and positive plate.
In sum, the winding mechanism of cell winding device of the present invention can be realized the full automatic winding battery core, be distributed with two-layer barrier film between the end of the electrode of the center of moulding battery core and adjacent electrode, also can guarantee good insulation effect even electrode tip is jagged, improve the battery yields, guarantee the safe handling of battery.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. electric core winding method is characterized in that comprising the following steps:
Two barrier films are sent to volume pin place, and part is passed the volume pin;
Two barrier films being passed the part of described volume pin separates;
A slice in positive plate and negative plate is sent to volume pin place, is located between two barrier films that pass described volume pin; And
Another sheet in described positive plate and negative pole place sheet is sent to volume pin place, is located between two barrier films that do not pass described volume pin;
The method that the described part that two barrier films are passed described volume pin is separated is selected from following method one and method two:
Method one to the barrier film end air-supply of passing described volume pin, makes two barrier films separately when pin is rolled up in rotation to predetermined angle; And
One running roller is resisted against on described volume pin, a slice in two barrier films that blown open is crushed between running roller and volume pin;
Method two, two barrier films pass the length difference of the part of described volume pin, rotate described volume pin, make the shorter barrier film of length of the part of passing the volume pin in two barrier films be positioned at inner lane; And
At predeterminated position, the backstop roller is set, uses described backstop roller to pass the long barrier film of length of the part of volume pin in two barrier films of backstop when described volume pin rotates to predetermined angle, pass two barrier films of described volume pin with separation.
2. electric core winding method according to claim 1, is characterized in that, described predetermined angle is that 45 degree are to 135 degree.
3. cell winding device, comprise winding mechanism, described winding mechanism comprises the volume pin and is used for coordinating to complete with described volume pin the pressure roller of coiling work, it is characterized in that: described winding mechanism also comprises membrane separation mechanism, and the part that described membrane separation mechanism is used for after two membrane portions are passed described volume pin, two barrier films being passed described volume pin separately; Described cell winding device also comprises:
The barrier film feed mechanism be used for two barrier films are sent to volume pin place, and part is passed described volume pin;
Anodal feed mechanism is used for providing positive plate to described winding mechanism; And
The negative pole feed mechanism is used for providing negative plate to described winding mechanism;
Wherein, a slice in positive plate and negative plate is sent between two barrier films that pass described volume pin, and another sheet in positive plate and negative plate is sent between two barrier films that do not pass described volume pin;
Described membrane separation mechanism comprises wind pushing mechanism or backstop roller, when described membrane separation mechanism comprises wind pushing mechanism, described wind pushing mechanism when described volume pin rotation 45 degree are spent to 135 to the barrier film end air-supply of passing described volume pin, the membrane portions of passing described volume pin with separation; Running roller is being resisted against after described membrane separation on described volume pin, and a slice in two barrier films that blown open is crushed between described running roller and volume pin;
When described membrane separation mechanism comprises the stop roller, described two barrier films pass the length difference of the part of described volume pin, described stop roller passes the long barrier film of length of the part of volume pin for two barrier films of backstop when described volume pin rotates to predetermined angle, pass two barrier films of described volume pin with separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100229337A CN102163733B (en) | 2010-12-14 | 2011-01-13 | Battery cell winding method and equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010590963 | 2010-12-14 | ||
| CN201010590963.3 | 2010-12-14 | ||
| CN2011100229337A CN102163733B (en) | 2010-12-14 | 2011-01-13 | Battery cell winding method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102163733A CN102163733A (en) | 2011-08-24 |
| CN102163733B true CN102163733B (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100229337A Active CN102163733B (en) | 2010-12-14 | 2011-01-13 | Battery cell winding method and equipment |
| CN2011200189922U Expired - Lifetime CN201975467U (en) | 2010-12-14 | 2011-01-13 | Cell winding device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200189922U Expired - Lifetime CN201975467U (en) | 2010-12-14 | 2011-01-13 | Cell winding device |
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| CN (2) | CN102163733B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163733B (en) * | 2010-12-14 | 2013-06-26 | 惠州亿纬锂能股份有限公司 | Battery cell winding method and equipment |
| CN102368566B (en) * | 2011-09-16 | 2013-01-16 | 铜陵市三圆特种铸造有限责任公司 | Semi-automatic winding machine and winding method for battery roll core |
| CN105720310B (en) * | 2016-04-13 | 2018-08-03 | 东莞锂威能源科技有限公司 | A kind of mechanism and its drawn needle method for detaching core coil needle |
| CN107275686A (en) * | 2017-06-13 | 2017-10-20 | 天能电池集团有限公司 | A kind of coiler device and method for winding of coiled battery pole group |
| CN110247095B (en) * | 2019-05-23 | 2024-05-17 | 深圳市诚捷智能装备股份有限公司 | Winding needle assembly and winding device |
| CN111640974B (en) * | 2020-06-29 | 2021-05-18 | 广东微电新能源有限公司 | Automatic tab angle alignment mechanism of reverse-winding electric core winding machine |
| WO2023050939A1 (en) | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Winding method, winding machine, electrode assembly and battery cell |
| CN114284571B (en) * | 2021-12-30 | 2024-07-16 | 深圳吉阳智能科技有限公司 | Winding device and winding method |
| CN116565282A (en) * | 2022-01-28 | 2023-08-08 | 宁德时代新能源科技股份有限公司 | Winding apparatus and winding method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773920Y (en) * | 2005-02-01 | 2006-04-19 | 比亚迪股份有限公司 | Electrode core of lithium ion battery and lithium ion battery therewith |
| CN101047070A (en) * | 2006-03-28 | 2007-10-03 | 江苏英泰电子有限公司 | Winding method of battery cell pole group |
| CN102163733B (en) * | 2010-12-14 | 2013-06-26 | 惠州亿纬锂能股份有限公司 | Battery cell winding method and equipment |
-
2011
- 2011-01-13 CN CN2011100229337A patent/CN102163733B/en active Active
- 2011-01-13 CN CN2011200189922U patent/CN201975467U/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN201975467U (en) | 2011-09-14 |
| CN102163733A (en) | 2011-08-24 |
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