CN102709604A - Folded and assembled battery and preparation method thereof - Google Patents
Folded and assembled battery and preparation method thereof Download PDFInfo
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- CN102709604A CN102709604A CN2012102333927A CN201210233392A CN102709604A CN 102709604 A CN102709604 A CN 102709604A CN 2012102333927 A CN2012102333927 A CN 2012102333927A CN 201210233392 A CN201210233392 A CN 201210233392A CN 102709604 A CN102709604 A CN 102709604A
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- negative plate
- barrier film
- core body
- assembled battery
- positive plate
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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
Abstract
The invention relates to the technical field of a lithium ion battery, and particularly relates to a folded and assembled battery and a preparation method thereof. The folded and assembled battery comprises a roll core body, an aluminum-plastic film for coating the roll core body and electrolyte injected into the aluminum-plastic film, wherein the roll core body comprises a positive plate, a negative plate and a diaphragm; and the diaphragm coats the positive plate after being folded, and the positive plate and the negative plate are folded and assembled. The structure of the roll core body of the folded and assembled battery is uniform and consistent in structure, not easy to deform, easy to control in thickness, stable in quality and suitable for generalization in a large-capacity battery.
Description
Technical field
The present invention relates to technical field of lithium ion, relate in particular to a kind of tabs assembled battery and preparation method thereof.
Background technology
Lithium ion battery have voltage height, specific energy high, have extended cycle life, advantage such as memory time is long; Not only on portable electric appts, be used widely like mobile phone, DV and laptop computer; And be widely used in the big-and-middle-sized electrical equipments such as electric automobile, electric bicycle and electric tool; Along with the increase gradually of range of application, increasingly high to the performance requirement of lithium ion battery.
The processing mode in traditional liquid flexible packing lithium ion electric pond comprises two kinds of stacked and takeup types, after high capacity cell generally adopts stacked assembling or takeup type assembling, with a plurality of volume core bodys parallel connections.The internal structure of the volume core body of stack type lithium ion battery is consistent, is not easy distortion.But stacked processing mode complicated operation, artificial lamination is wasted time and energy, and semi-automatic or fully-automatic equipment is owing to produce more loaded down with trivial detailsly, and production efficiency is low.Coiled processing mode is easy to operate, no matter be artificial the coiling or semi-automatic full automatic winding, can be faster and high-quality completion, and the artificial operation easily of reeling.But the internal structure heterogeneity of the volume core body of coiled lithium ion battery, the electricity in-core portion extent of reaction, speed inequality when discharging and recharging, easy deformation is not suitable in high capacity cell, promoting.
Therefore, need a kind of yielding lithium ion battery and preparation method thereof of enhancing productivity, not allow badly.
Summary of the invention
The object of the invention be exactly provide to the deficiency of prior art a kind of production efficiency high, do not allow yielding tabs assembled battery.
Another object of the present invention just provides a kind of preparation method of tabs assembled battery.
To achieve these goals, the present invention adopts following technical scheme.
A kind of tabs assembled battery; It comprises the volume core body, is used to coat the aluminum plastic film of volume core body and injects the electrolyte in the aluminum plastic film; Said volume core body comprises positive plate, negative plate and barrier film, clad anode sheet after the said barrier film doubling, said positive plate and negative plate fold.
Wherein, said positive plate and negative plate fold alternately successively.
Wherein, said volume core body comprises the foldable layer group that is made up of barrier film, positive plate, barrier film, negative plate successively.
Wherein, said foldable layer group two or more.
A kind of preparation method of tabs assembled battery comprises following preparation process:
(a), positive plate is positioned in the formed space of barrier film doubling barrier film clad anode sheet with after the barrier film doubling;
(b) negative plate is positioned over the surface of barrier film, makes negative plate vertical with positive plate;
(c) positive plate, negative plate fold make the volume core body;
(d) coat the volume core body with aluminum plastic film, in aluminum plastic film, inject electrolyte, make tabs assembled battery.
Wherein, said step (b) is specially: negative plate is positioned over an end on the surface of barrier film, makes negative plate vertical with positive plate, the edge of negative plate and the justified margin of barrier film.
Wherein, said step (b) is specially: negative plate is positioned over the centre on the surface of barrier film, makes negative plate vertical with positive plate.
Wherein, said step (c) is specially: the alternate folding assembling successively of positive plate, negative plate makes the volume core body.
Beneficial effect of the present invention: the even structure of the volume core body of a kind of tabs assembled battery of the present invention is consistent, is not easy distortion, and thickness is controlled easily, and steady quality is adapted at promoting in the high capacity cell.
The preparation method of a kind of tabs assembled battery of the present invention, easy to operate, no matter be that manual work is folding or automation is folding, can faster and in high quality accomplish, production efficiency is high, is adapted at promoting in the high capacity cell.
Description of drawings
Fig. 1 is the not sketch map of clad anode sheet of barrier film of the present invention.
Fig. 2 is the sketch map behind the barrier film clad anode sheet of the present invention.
Fig. 3 is positive plate of the present invention and the not folding sketch map of negative plate.
Fig. 4 is the sketch map of volume core body of the present invention.
Reference numeral includes:
1---volume core body 2---positive plate
3---negative plate 4---barrier film.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Shown in Fig. 1 ~ 4; A kind of tabs assembled battery; It comprises volume core body 1, is used to coat the aluminum plastic film of volume core body 1 and injects the electrolyte in the aluminum plastic film; Said volume core body 1 comprises positive plate 2, negative plate 3 and barrier film 4, clad anode sheet 2 after said barrier film 4 doublings, said positive plate 2 and negative plate 3 fold.Particularly, clad anode sheet 2 after the barrier film 4 horizontal doublings, processing ease.
The said positive plate of present embodiment 2 and negative plate 3 be fold alternately successively, and during fold, positive plate 2 is folding toward the direction of negative plates 3, and negative plate 3 is folding toward the direction of positive plates 2 then, so repeats, and makes volume core body 1.Also can be that negative plate 3 is folding toward the direction of positive plate 2 earlier, positive plate 2 be folding toward the direction of negative plate 3 then, so repeats, and makes volume core body 1.The even structure of the volume core body 1 that makes is consistent, is not easy distortion.
The said volume core body 1 of present embodiment comprises the foldable layer group that is made up of barrier film 4, positive plate 2, barrier film 4, negative plate 3 successively.The thickness of volume core body 1 is convenient to control.
The width of the said barrier film 4 of present embodiment is bigger by 5% ~ 8% than the width of positive plate 2.The width of barrier film 4 is more bigger than the width of positive plate 2, and fully the clad anode sheet 2.
The even structure of the volume core body 1 of a kind of tabs assembled battery of the present invention is consistent, is not easy distortion, and thickness is controlled easily, and steady quality is adapted at promoting in the high capacity cell.
The difference of present embodiment and embodiment 1 is: the said foldable layer group of present embodiment two or more.The volume core body 1 of present embodiment is thicker, and capacity is bigger, can make ultra thick battery.
Unaccounted in the present embodiment characteristic adopts the explanation among the embodiment 1, no longer gives unnecessary details at this.
A kind of preparation method who prepares the tabs assembled battery of embodiment 1 comprises following preparation process:
(a), positive plate 2 is positioned in the formed space of barrier film 4 doublings barrier film 4 clad anode sheets 2 with after barrier film 4 doublings;
(b) negative plate 3 is positioned over the surface of barrier film 4, makes negative plate 3 vertical with positive plate 2;
(c) positive plate 2, negative plate 3 fold make volume core body 1;
(d) coat volume core body 1 with aluminum plastic film, in aluminum plastic film, inject electrolyte, make tabs assembled battery.
Fold is specially: positive plate 2 is along negative plate 3 doublings, and negative plate 3 so alternately, makes volume core body 1 along positive plate 2 doublings then.The preparation method of a kind of tabs assembled battery of the present invention, easy to operate, no matter be that manual work is folding or automation is folding, can faster and in high quality accomplish, production efficiency is high, is adapted at promoting in the high capacity cell.
The difference of present embodiment and embodiment 3 is: the said step of present embodiment (b) is specially: negative plate 3 is positioned over an end on the surface of barrier film 4, makes negative plate 3 vertical with positive plate 2, the justified margin of the edge of negative plate 3 and barrier film 4.
As shown in Figure 3, the left justify of the lower end of negative plate 3 and barrier film 4, negative plate 3 aligns with barrier film 4 easily, is convenient to like this carry out fold, is convenient to the carrying out of subsequent step, enhances productivity.
Certainly, said step (b) also can be specially: negative plate 3 is positioned over the centre on the surface of barrier film 4, makes negative plate 3 vertical with positive plate 2.It is unrestricted that negative plate 3 is positioned over the position on surface of barrier film 4, as long as can realize the alternate folding assembling successively of positive plate 2, negative plate 3.
Said step (c) is specially: the alternate folding assembling successively of positive plate 2, negative plate 3 makes volume core body 1.During fold, positive plate 2 is folding toward the direction of negative plate 3, and negative plate 3 is folding toward the direction of positive plate 2 then, so repeats, and makes volume core body 1.Also can be that negative plate 3 is folding toward the direction of positive plate 2 earlier, positive plate 2 be folding toward the direction of negative plate 3 then, so repeats, and makes volume core body 1.
Unaccounted in the present embodiment characteristic adopts the explanation among the embodiment 1, no longer gives unnecessary details at this.
Should be noted that at last; Above embodiment only is used to technical scheme of the present invention is described but not to the restriction of protection range of the present invention; Although the present invention has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the essence and the scope of technical scheme of the present invention.
Claims (8)
1. tabs assembled battery; It comprises the volume core body, is used to coat the aluminum plastic film of volume core body and injects the electrolyte in the aluminum plastic film; It is characterized in that: said volume core body comprises positive plate, negative plate and barrier film; Clad anode sheet after the said barrier film doubling, said positive plate and negative plate fold.
2. a kind of tabs assembled battery according to claim 1 is characterized in that: said positive plate and negative plate be fold alternately successively.
3. a kind of tabs assembled battery according to claim 1, it is characterized in that: said volume core body comprises the foldable layer group that is made up of barrier film, positive plate, barrier film, negative plate successively.
4. a kind of tabs assembled battery according to claim 3 is characterized in that: said foldable layer group two or more.
5. the preparation method of the described a kind of tabs assembled battery of claim 1 is characterized in that: comprise following preparation process:
(a), positive plate is positioned in the formed space of barrier film doubling barrier film clad anode sheet with after the barrier film doubling;
(b) negative plate is positioned over the surface of barrier film, makes negative plate vertical with positive plate;
(c) positive plate, negative plate fold make the volume core body;
(d) coat the volume core body with aluminum plastic film, in aluminum plastic film, inject electrolyte, make tabs assembled battery.
6. the preparation method of a kind of tabs assembled battery according to claim 5; It is characterized in that: said step (b) is specially: an end that negative plate is positioned over the surface of barrier film; Make negative plate vertical, the edge of negative plate and the justified margin of barrier film with positive plate.
7. the preparation method of a kind of tabs assembled battery according to claim 5 is characterized in that: said step (b) is specially: negative plate is positioned over the centre on the surface of barrier film, makes negative plate vertical with positive plate.
8. the preparation method of a kind of tabs assembled battery according to claim 5 is characterized in that: said step (c) is specially: the alternate folding assembling successively of positive plate, negative plate makes the volume core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102333927A CN102709604A (en) | 2012-07-06 | 2012-07-06 | Folded and assembled battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102333927A CN102709604A (en) | 2012-07-06 | 2012-07-06 | Folded and assembled battery and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102709604A true CN102709604A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102333927A Pending CN102709604A (en) | 2012-07-06 | 2012-07-06 | Folded and assembled battery and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5635312A (en) * | 1994-12-13 | 1997-06-03 | Pioneer Electronic Corporation | Layer-built chemical cell device |
| CN202712351U (en) * | 2012-07-06 | 2013-01-30 | 东莞市金源电池科技有限公司 | Folding-plate assembling type battery |
-
2012
- 2012-07-06 CN CN2012102333927A patent/CN102709604A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5635312A (en) * | 1994-12-13 | 1997-06-03 | Pioneer Electronic Corporation | Layer-built chemical cell device |
| CN202712351U (en) * | 2012-07-06 | 2013-01-30 | 东莞市金源电池科技有限公司 | Folding-plate assembling type battery |
Non-Patent Citations (1)
| Title |
|---|
| 郭炳坤: "《化学电源-电池原理及制造技术》", 31 December 2009 * |
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Application publication date: 20121003 |