CN103545471B - A kind of battery plus-negative plate barrier film, preparation method and application - Google Patents
A kind of battery plus-negative plate barrier film, preparation method and application Download PDFInfo
- Publication number
- CN103545471B CN103545471B CN201310482443.4A CN201310482443A CN103545471B CN 103545471 B CN103545471 B CN 103545471B CN 201310482443 A CN201310482443 A CN 201310482443A CN 103545471 B CN103545471 B CN 103545471B
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- Prior art keywords
- barrier film
- short
- negative plate
- battery
- basement membrane
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- 230000004888 barrier function Effects 0.000 title claims abstract description 160
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 210000002469 basement membrane Anatomy 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of battery plus-negative plate barrier film, it is characterized in that, it comprises basement membrane, this basement membrane is provided with short barrier film a and short barrier film b, and wherein, short barrier film b is located at basement membrane front portion, short barrier film a is located at basement membrane rear portion, and the length of short barrier film a is not more than the length of short barrier film b.The invention also discloses the preparation method of this barrier film and the application in battery manufacture thereof.The present invention, by barrier film basement membrane, arranges short barrier film a and short barrier film b, and making, after coiling preparation, has two-layer barrier film to cover negative plate end, thus can better prevent barrier film breakdown, and cause battery short circuit; Barrier film arranges center positioning hole, and make when producing battery, coordinate automatic spooling machine, realize the quick coiling of automation, the battery product consistency of acquisition is high, and production efficiency is high, greatly saves production cost.
Description
Technical field
The present invention relates to battery manufacturing field, be specifically related to a kind of battery plus-negative plate barrier film, and the preparation method and application of this battery plus-negative plate barrier film.
Background technology
In recent years, along with popularizing of electronic product, the demand of people to battery is increasing, simultaneously also more and more higher to the requirement of battery security.This is because when particularly causing internal short-circuit at positive pole and cathode contact, the temperature of battery can sharply rise, and even can cause battery explosion or on fire, can work the mischief to equipment and user.
Battery generally comprises shell, hush panel, lead-in wire, electrode group, electrolyte, and electrode group comprises positive pole, barrier film, negative pole usually.Battery diaphragm is one of vitals in battery, and its Main Function is separated the positive pole of battery and negative pole, causes short circuit, and have the function of ion, gas permeation to prevent the two poles of the earth from contacting.The performance of structure to battery of battery diaphragm plays very important effect.
Conventional membrane preparation method is: by short barrier film transverse weld in middle part, long diaphragm length direction, length cuts long barrier film and becomes barrier film finished product on demand.
Traditional battery battery core winding method is:
1) pin that fixes rolled up by pin, manual positioning a slice barrier film, and rear pressure driving wheel fixes barrier film;
2) negative plate sandwiches in bilayer, and positive plate is put into above upper strata barrier film (and short barrier film);
3) volume pin winding battery core is started;
4) manual a set of cups;
5) manual loose winding pin, the withdraw of the needle.
Adopt traditional product and preparation method, feeding, winding are manually, and homogeneity of product is poor; Negative pole head only have single-layer septum, and against short-circuit is poor; Winding efficiency is low, needs staff many.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of battery plus-negative plate barrier film with better against short-circuit effect is provided, and the preparation method of this battery plus-negative plate barrier film is manufacturing the application in battery with this battery plus-negative plate barrier film.
The technical scheme that the present invention is adopted for achieving the above object is:
A kind of battery plus-negative plate barrier film, it comprises basement membrane, and this basement membrane is provided with short barrier film a and short barrier film b, and wherein, short barrier film b is located at basement membrane front portion, and short barrier film a is located at basement membrane rear portion, and the length of short barrier film a is not more than the length of short barrier film b.
Described short barrier film a and the length of short barrier film b are 3 ~ 30mm.
Distance between described short barrier film a and short barrier film b is 3 ~ 120mm.
In described basement membrane center, be also provided with a location hole.
The preparation method of aforementioned battery plus-negative plate barrier film, it comprises the following steps:
(1) female barrier film is prepared;
(2) cut by female barrier film prepared by step (1), prepare short barrier film a and short barrier film b respectively, the length of its short-and-medium barrier film a is not more than the length of short barrier film b;
(3) bonding machine is set, using the female barrier film prepared by step (1) as basement membrane, short barrier film b is welded on the middle part of this basement membrane;
(4) at 3 ~ 120mm place, short barrier film b rear portion, short barrier film a is welded;
(5) puncher is set, in the center of basement membrane, a location hole is set, and this location hole is between short barrier film a and short barrier film b, obtained battery plus-negative plate barrier film.
Short barrier film a described in step (2) and the length of short barrier film b are 3 ~ 30mm.
Step (3) and step (4) weld the welding position of short barrier film a and short barrier film b, lay respectively at apart from short barrier film a and short barrier film b front edge 0.1 ~ 2mm place.
The application of aforementioned battery plus-negative plate barrier film in battery manufacture, it comprises the following steps:
(I) an automatic spooling machine is set, behind location hole location, sends barrier film by the stepping motor of automatic spooling machine, and cut;
(II) barrier film is sent into coiling station, by the positioning fixture on automatic spooling machine coiling station both sides, barrier film is positioned;
(III) negative plate is put into barrier film rear portion, make barrier film cover negative plate lower surface;
(IV) depress the volume pin of automatic spooling machine, and barrier film front portion is upwards bent, make barrier film front portion cover negative plate upper surface;
(V), after fixture to be positioned is reorientated, the upper surface of the barrier film front portion after bending puts into positive plate;
(VI) start automatic spooling machine, complete coiling.
When putting into negative plate described in step (III), negative plate front edge overlaps with short barrier film a back edge, and when putting into positive plate described in step (V), positive plate front edge overlaps with short barrier film b front edge.
Step (IV) described volume pin is between the front edge and welding position of short barrier film a.
Product provided by the invention, by barrier film basement membrane, arranges short barrier film a and short barrier film b, and making, after coiling preparation, has two-layer barrier film to cover negative plate end, thus can better prevent barrier film breakdown, and cause battery short circuit;
Preparation method provided by the invention and application, by arranging center positioning hole on barrier film, make when producing battery, coordinate automatic spooling machine, realize the quick coiling of automation, make the battery product consistency of acquisition high, production efficiency is high, greatly saves production cost.
Accompanying drawing explanation
Fig. 1 is battery plus-negative plate barrier film overall structure schematic diagram of the present invention;
Fig. 2 is after assembling both positive and negative polarity, the sectional view of battery core before coiling.
In figure: 1. basement membrane 2. short barrier film a3. short barrier film b4. location hole 5. welding position 6. positive plate 7. negative plate 8. volume pin
Embodiment
Embodiment: see Fig. 1 and Fig. 2, the battery plus-negative plate barrier film that the present embodiment provides, it comprises basement membrane 1, this basement membrane 1 is provided with short barrier film a2 and short barrier film b3, wherein, it is anterior that short barrier film b3 is located at basement membrane 1, and short barrier film a2 is located at basement membrane 1 rear portion, and the length of short barrier film a2 is not more than the length of short barrier film b3.
Described short barrier film a2 and the length of short barrier film b3 are 3 ~ 30mm.
Distance between described short barrier film a2 and short barrier film b3 is 3 ~ 120mm.
In described basement membrane 1 center, be also provided with a location hole 4.
The preparation method of aforementioned battery plus-negative plate barrier film, it comprises the following steps:
(1) female barrier film is prepared;
(2) cut by female barrier film prepared by step (1), prepare short barrier film a2 and short barrier film b3 respectively, the length of its short-and-medium barrier film a2 is not more than the length of short barrier film b3;
(3) bonding machine is set, using the female barrier film prepared by step (1) as basement membrane 1, short barrier film b3 is welded on the middle part of this basement membrane 1;
(4) at 3 ~ 120mm place, short barrier film b3 rear portion, short barrier film a2 is welded;
(5) puncher is set, in the center of basement membrane 1, a location hole 4 is set, and this location hole 4 is between short barrier film a2 and short barrier film 3b, obtained battery plus-negative plate barrier film.
Short barrier film a2 described in step (2) and the length of short barrier film b3 are 3 ~ 30mm.
Step (3) and step (4) weld the welding position 5 of short barrier film a2 and short barrier film b3, lay respectively at apart from short barrier film a2 and short barrier film b3 front edge 0.1 ~ 2mm place.
The application of aforementioned battery plus-negative plate barrier film in battery manufacture, it comprises the following steps:
(I) arrange an automatic spooling machine, location hole 4 is sent barrier film by the stepping motor of automatic spooling machine, and is cut after locating;
(II) barrier film is sent into coiling station, by the positioning fixture on automatic spooling machine coiling station both sides, barrier film is positioned;
(III) negative plate 7 is put into barrier film rear portion, make barrier film cover negative plate 7 lower surface;
(IV) depress the volume pin 8 of automatic spooling machine, and barrier film front portion is upwards bent, make barrier film front portion cover negative plate 7 upper surface;
(V), after fixture to be positioned is reorientated, the upper surface of the barrier film front portion after bending puts into positive plate 6;
(VI) start automatic spooling machine, complete coiling.
When putting into negative plate 7 described in step (III), negative plate 7 front edge overlaps with short barrier film a2 back edge, and when putting into positive plate 6 described in step (V), positive plate 6 front edge overlaps with short barrier film b3 front edge.
Step (IV) described volume pin is between the front edge and welding position 5 of short barrier film a2.
But the foregoing is only better possible embodiments of the present invention, and be not used to limit to the scope of the claims of the present invention, therefore other embodiments of the step recorded in all utilization the present invention and application, and the equivalence change done, be all included in protection scope of the present invention.
Claims (6)
1. a preparation method for battery plus-negative plate barrier film, is characterized in that, it comprises the following steps:
(1) female barrier film is prepared;
(2) cut by female barrier film prepared by step (1), prepare short barrier film a and short barrier film b respectively, the length of its short-and-medium barrier film a is not more than the length of short barrier film b;
(3) bonding machine is set, using the female barrier film prepared by step (1) as basement membrane, short barrier film b is welded on the front portion of this basement membrane;
(4) at 3 ~ 120mm place, short barrier film b rear portion, short barrier film a is welded;
(5) puncher is set, in the center of basement membrane, a location hole is set, and this location hole is between short barrier film a and short barrier film b, obtained battery plus-negative plate barrier film.
2. the preparation method of battery plus-negative plate barrier film according to claim 1, is characterized in that, the short barrier film a described in step (2) and the length of short barrier film b are 3 ~ 30mm.
3. the preparation method of battery plus-negative plate barrier film according to claim 1, it is characterized in that, step (3) and step (4) weld the welding position of short barrier film a and short barrier film b, lay respectively at apart from short barrier film a and short barrier film b front edge 0.1 ~ 2mm place.
4., according to the application of battery plus-negative plate barrier film in battery manufacture prepared by the described preparation method of one of claims 1 to 3, it is characterized in that, it comprises the following steps:
(I) an automatic spooling machine is set, behind location hole location, sends barrier film by the stepping motor of automatic spooling machine, and cut;
(II) barrier film is sent into coiling station, by the positioning fixture on automatic spooling machine coiling station both sides, barrier film is positioned;
(III) negative plate is put into barrier film rear portion, make barrier film cover negative plate lower surface;
(IV) depress the volume pin of automatic spooling machine, and barrier film front portion is upwards bent, make barrier film front portion cover negative plate upper surface;
(V), after fixture to be positioned is reorientated, the upper surface of the barrier film front portion after bending puts into positive plate;
(VI) start automatic spooling machine, complete coiling.
5. the application of battery plus-negative plate barrier film according to claim 4 in battery manufacture, it is characterized in that, when step (III) puts into negative plate, negative plate front edge overlaps with short barrier film a back edge, when step (V) puts into positive plate, positive plate front edge overlaps with short barrier film b front edge.
6. the application of battery plus-negative plate barrier film according to claim 4 in battery manufacture, is characterized in that, step (IV) described volume pin is between the front edge and welding position of short barrier film a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310482443.4A CN103545471B (en) | 2013-10-15 | 2013-10-15 | A kind of battery plus-negative plate barrier film, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310482443.4A CN103545471B (en) | 2013-10-15 | 2013-10-15 | A kind of battery plus-negative plate barrier film, preparation method and application |
Publications (2)
| Publication Number | Publication Date |
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| CN103545471A CN103545471A (en) | 2014-01-29 |
| CN103545471B true CN103545471B (en) | 2016-01-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805205A (en) * | 2005-01-14 | 2006-07-19 | 比亚迪股份有限公司 | Electrode plate core of lithium ion cell and lithium ion cell with the same |
| CN1838451A (en) * | 2005-03-23 | 2006-09-27 | 三星Sdi株式会社 | Electrode assembly and lithium ion secondary battery using the same |
| CN201853756U (en) * | 2010-07-23 | 2011-06-01 | 松下能源(无锡)有限公司 | Battery diaphragm and battery |
| CN102122728A (en) * | 2011-01-28 | 2011-07-13 | 福建南平南孚电池有限公司 | Method for winding cylindrical lithium-iron disulfide battery core |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013073787A (en) * | 2011-09-28 | 2013-04-22 | Panasonic Corp | Nonaqueous electrolyte secondary battery and method of manufacturing the same |
| JP5704405B2 (en) * | 2011-11-15 | 2015-04-22 | トヨタ自動車株式会社 | Secondary battery |
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2013
- 2013-10-15 CN CN201310482443.4A patent/CN103545471B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805205A (en) * | 2005-01-14 | 2006-07-19 | 比亚迪股份有限公司 | Electrode plate core of lithium ion cell and lithium ion cell with the same |
| CN1838451A (en) * | 2005-03-23 | 2006-09-27 | 三星Sdi株式会社 | Electrode assembly and lithium ion secondary battery using the same |
| CN201853756U (en) * | 2010-07-23 | 2011-06-01 | 松下能源(无锡)有限公司 | Battery diaphragm and battery |
| CN102122728A (en) * | 2011-01-28 | 2011-07-13 | 福建南平南孚电池有限公司 | Method for winding cylindrical lithium-iron disulfide battery core |
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| CN103545471A (en) | 2014-01-29 |
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