CN109193033A - Soft bag lithium ionic cell - Google Patents
Soft bag lithium ionic cell Download PDFInfo
- Publication number
- CN109193033A CN109193033A CN201810945008.3A CN201810945008A CN109193033A CN 109193033 A CN109193033 A CN 109193033A CN 201810945008 A CN201810945008 A CN 201810945008A CN 109193033 A CN109193033 A CN 109193033A
- Authority
- CN
- China
- Prior art keywords
- membrane layer
- positive plate
- negative electrode
- electrode tab
- layer
- 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.)
- Granted
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 121
- 238000003466 welding Methods 0.000 claims description 23
- 239000002033 PVDF binder Substances 0.000 claims description 13
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229910006025 NiCoMn Inorganic materials 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
The invention discloses a kind of soft bag lithium ionic cells comprising: the first diaphragm bag, the second diaphragm bag of stacking facing each other are packaged with a positive plate in each first diaphragm bag respectively；It is packaged with a negative electrode tab respectively in each second diaphragm bag；Between the positive plate of arbitrary neighborhood, negative electrode tab between be separated with two membrane layers.The technical program is applied to high capacity cell, is conducive to the safety for improving battery.
Description
Technical field
The present invention relates to field of lithium ion battery, are specifically designed a kind of soft bag lithium ionic cell suitable for high capacity cell
Structure.
Background technique
With the urgent demand of environmental protection, the development of electric car increasingly obtains the concern of people.High-capacity unit
The application of battery (50Ah or more) is more and more wider.And battery is bigger, safety problem is more prominent, with greater need for attention and reinforces.
Summary of the invention
The first purpose of the embodiment of the present invention is to provide a kind of soft bag lithium ionic cell, and the technical program is applied to great Rong
Battery is measured, the safety for improving battery is conducive to.
In a first aspect, a kind of soft bag lithium ionic cell provided in an embodiment of the present invention, comprising: face be layered on top of each other first
Diaphragm bag, the second diaphragm bag,
It is packaged with a positive plate respectively in each first diaphragm bag；
It is packaged with a negative electrode tab respectively in each second diaphragm bag；
Between the positive plate of arbitrary neighborhood, negative electrode tab between be separated with two membrane layers.
Optionally, the width of the positive plate is narrower than the width of the negative electrode tab.
Optionally, the first diaphragm bag, the size of the second diaphragm bag are consistent, and when stacking, each edge was aligned.
Optionally, first diaphragm bag includes:
Face is covered on the top surface and bottom surface of the positive plate respectively for first membrane layer, the second membrane layer, only institute
It states the tab welding of positive plate to stretch out from the edge of first membrane layer, the second membrane layer, other parts are covered on described the
Between one membrane layer, the second membrane layer；
First membrane layer, the second membrane layer and the positive plate are bonded together face-to-face respectively.
Optionally, between first membrane layer and the positive plate and second membrane layer and the anode
A polyvinylidene fluoride layer is also respectively provided between piece,
First membrane layer, the second membrane layer and the positive plate are viscous by each polyvinylidene fluoride layer respectively
It is combined.
Optionally, second diaphragm bag includes:
Face is covered on the top surface and bottom surface of the negative electrode tab respectively for first membrane layer, the second membrane layer, only institute
It states the tab welding of negative electrode tab to stretch out from the edge of first membrane layer, the second membrane layer, other parts are covered on described the
Between one membrane layer, the second membrane layer；
First membrane layer, the second membrane layer and the negative electrode tab are bonded together face-to-face respectively.
Optionally, between first membrane layer and the negative electrode tab and second membrane layer and the cathode
A polyvinylidene fluoride layer is also respectively provided between piece,
First membrane layer, the second membrane layer and the negative electrode tab are viscous by each polyvinylidene fluoride layer respectively
It is combined.
Optionally, first diaphragm bag includes: the first membrane layer, the second membrane layer,
Face is covered on the top surface and bottom surface of the positive plate respectively for first membrane layer, the second membrane layer, only institute
The tab welding for stating positive plate is stretched out from the edge of first membrane layer, the second membrane layer, and other parts are covered on described
In first membrane layer, the second membrane layer；
First membrane layer, the second membrane layer link together beyond the edge lasers spot welding of the positive plate；
Optionally, second diaphragm bag includes: the first membrane layer, the second membrane layer,
Face is covered on the top surface and bottom surface of the negative electrode tab respectively for first membrane layer, the second membrane layer, only institute
The tab welding for stating negative electrode tab is stretched out from the edge of first membrane layer, the second membrane layer, and other parts are covered on described
In first membrane layer, the second membrane layer；
First membrane layer, the second membrane layer link together beyond the edge lasers spot welding of the negative electrode tab.
Therefore using the present embodiment technical solution, every positive plate, negative electrode tab are respectively implanted the first diaphragm bag,
In two diaphragm bags, it can effectively avoid short circuit caused by pole piece displacement and cause positive plate to fail for negative since pole piece shifts
Pole piece, and lead to positive plate analysis lithium and burr occur and then occur piercing through the bad phenomenon of diaphragm.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not
Constitute inappropriate limitation of the present invention.
Fig. 1 is the assembly perspective structure schematic diagram of a kind of positive plate and the first diaphragm bag that the embodiment of the present invention 1 provides；
Fig. 2 is the assembly perspective structure schematic diagram of a kind of negative electrode tab that the embodiment of the present invention 1 provides and the second diaphragm bag；
Fig. 3 is the assembly perspective structure schematic diagram for the lamellar body that the embodiment of the present invention 1 provides.
Appended drawing reference:
101: positive plate；102: negative electrode tab；
201: the first diaphragm bags；202: the second diaphragm bags；
301,302: tab welding portion.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention
And explanation is used to explain the present invention, but not as a limitation of the invention.
Embodiment 1
Ginseng as shown in figure 1 to 3, present embodiments provides a kind of Soft Roll lithium ion suitable for big multiplying power discharging application demand
Battery, the battery specifically include that the first diaphragm bag 201 of stacking facing each other, the second diaphragm bag 202.
It is shown in Figure 1, it is packaged with a positive plate 101 respectively in each first diaphragm bag 201, only the pole of positive plate 101
Ear weld part 301 is stretched out from the edge of the first diaphragm bag 201, and the other parts of positive plate 101 are covered on the first diaphragm bag 201
It is interior, and can not stretch out.
It is shown in Figure 2, it is packaged with a negative electrode tab 102 respectively in each second diaphragm bag 202, only the pole of negative electrode tab 102
Ear weld part 302 is stretched out from the edge of the second diaphragm bag 202, and the other parts of negative electrode tab 102 are covered on the second diaphragm bag 202
It is interior, and can not stretch out.
Its preparation process is as follows: according to Fig. 1,2 diagram technique, being respectively implanted respectively to positive plate 101, negative electrode tab 102
In first diaphragm bag 201, the second diaphragm bag 202, after the completion of bag making process, then according to lamination process, by the first diaphragm bag
201,202 stacked above one another of the second diaphragm bag (also can be, but not limited to the sequence by the second diaphragm bag 202, the first diaphragm bag 201)
Laminated lithium ion battery shown in Fig. 3 can be obtained, at this point, each positive plate 101, negative electrode tab 102 remove respective tab welding portion
301, it outside 302, is limited in the first diaphragm bag 201, the second diaphragm bag 202 respectively, in two positive plates 101, negative of arbitrary neighborhood
Between pole piece 102 between be separated with two layers of membrane layer.
Therefore using the present embodiment technical solution, every positive plate 101, negative electrode tab 102 are respectively implanted the first diaphragm
In the 201, second diaphragm bag 202 of bag, it can effectively avoid short circuit caused by pole piece displacement and lead to anode since pole piece shifts
Piece 101 fails to cause positive plate 101 to analyse lithium for negative electrode tab 102 and burr occur and then occur piercing through the bad existing of diaphragm
As.
As the signal of the present embodiment, preferably the Length x Width of the first diaphragm bag 201, the second diaphragm bag 202 is designed to
Equally, each side edge for the lamellar body for forming it in lamination is perfectly aligned, further it is advantageously ensured that positive plate 101, negative
The face of pole piece 102 is conducive to further avoid pole piece displacement, is conducive to the consistency for improving soft-package battery.
As the signal of the present embodiment, the width of the positive plate 101 of the present embodiment and length can be arranged to slightly narrow
In the width and length of negative electrode tab 102, make to be laminated by consistent first diaphragm bag 201 of size, 202 face of the second diaphragm bag
When, 102 interference of negative electrode tab in the second diaphragm bag 202 is to the positive plate 101 in positive first diaphragm bag 201, using this reality
Apply a preferred embodiment can further ensure that every place's coat of positive plate 101 can coat in face negative electrode tab 102, into one
Step avoids analysis lithium phenomenon.
As the signal of the present embodiment, the bag making technique of the positive plate 101 of the present embodiment is as follows: by two sizes it is identical every
Film layer (being denoted as the first membrane layer, the second membrane layer) is respectively overlay in top surface, the bottom surface of positive plate 101, makes only positive plate 101
Tab welding portion 301 is stretched out from the edge of the first membrane layer, the second membrane layer, and other parts are covered on the first membrane layer, second
Between membrane layer；Then the first membrane layer, the second membrane layer and positive plate 101 are bonded together face-to-face respectively to obtain the final product
To immovable first diaphragm bag 201 of positive plate 101.
As the signal of the present embodiment, 102 bag making of negative electrode tab can also be carried out using above-mentioned technique: two sizes are identical
Membrane layer (being denoted as the first membrane layer, the second membrane layer) is respectively overlay in top surface, the bottom surface of negative electrode tab 102, makes only negative electrode tab 102
Tab welding portion 302 stretched out from the edge of the first membrane layer, the second membrane layer, other parts are covered on the first membrane layer, the
Between two membrane layers；Then the first membrane layer, the second membrane layer and negative electrode tab 102 are bonded together i.e. face-to-face respectively
Obtain immovable first diaphragm bag 201 of negative electrode tab 102.
One of signal as the present embodiment, current inventor provides the top surfaces and bottom of each membrane layer in each diaphragm bag
Polyvinylidene fluoride material (Polyvinylidene Fluoride, abbreviation PVDF) is respectively coated in face, make each membrane layer relatively just
The face of pole piece 101 is formed with PVDF layers, then by hot pressing, so that hot pressing temperature is reached scheduled temperature, makes in pressure and temperature
Under degree, the PVDF layer of each membrane layer is in heated lower softening (softening temperature is 112~145 DEG C) to positive plate adjacent thereto
101 (or negative electrode tabs 102), which are mutually bonded together, realizes that two membrane layers and in-between positive plate 101 (or negative electrode tab 102) are viscous
It is combined.
Using above-mentioned bonding bag making technical solution, be conducive to the displacement for avoiding pole piece, it is ensured that the safety of battery.
As the signal of the present embodiment, the first diaphragm bag 201, the second diaphragm bag 202 can also use following technical scheme
It realizes:
By the first membrane layer, the second membrane layer respectively face be covered on positive plate 101 (or negative electrode tab 102) top surface and
Bottom surface, only the tab welding of positive plate 101 (or negative electrode tab 102) is stretched out from the edge of the first membrane layer, the second membrane layer, other
Part is covered on the first membrane layer, in the second membrane layer；First membrane layer, the second membrane layer are beyond (or the cathode of positive plate 101
Piece 102) edge lasers spot welding link together to get positive plate 101 (or negative electrode tab 102) bag making.
Wherein laser welding can be realized by the way of being spaced spot welding or be realized by the way of linearly welding.
The technical solution of bag is attached into the first membrane layer, the second membrane layer using laser spot welding, due to laser point
Weldering can make its spot welding tie point small and accurate, be conducive to the volume for improving the positive plate 101 in diaphragm bag, be conducive to improve electricity
The capacity in pond, and production efficiency can be greatly improved using the technical solution, and realize to the positive plate 101 in diaphragm bag
Positioning, avoid the problem that positive plate 101 displacement and cause lithium ion battery electrical property it is bad or even short-circuit, cause security risk.
Experimental Comparison analysis
It is below signal to knot of the embodiment of the present invention to prepare the monomer flexible packing lithium ion battery for electric vehicle of 50Ah
Structure carries out test and compares analysis:
Reference examples 1:
It is made of following technique:
Positive plate is prepared, wherein plus plate current-collecting body uses aluminium foil, the specification of aluminium foil are as follows: long 176mm wide 80mm, positive electrode
Are as follows: Li (NiCoMn) O2, coating thickness are as follows: 60um ± 5um；
Negative electrode tab is prepared, wherein negative current collector uses copper foil, the specification of copper foil are as follows: long 179mm wide 82mm, negative electrode material
Are as follows: C, coating thickness are as follows: 60um ± 5um；
Positive plate enters bag, and positive plate is placed in diaphragm bag, and wherein diaphragm bag is made of three layers of PP/PE/PP diaphragm, every
The specification of film bag are as follows: long 179mm wide 82mm；
Lamination process, puts into the diaphragm bag of positive plate, negative electrode tab is laminated, and obtains lamellar body；
Lamellar body is subjected to aluminum plastic film encapsulation, carries out electrolyte filling to get the electronic vapour of monomer of the 50Ah of this reference examples
Automobile-used flexible packing lithium ion battery.
Wherein the technique of each process can be, but not limited to realize using the prior art.
Embodiment 1:
The present embodiment
Be made of following technique: positive plate, negative electrode tab and use diaphragm and each process in technique with
Reference examples are identical, the difference is that only:
Positive plate negative electrode tab is entered bag respectively after obtained positive plate, negative electrode tab by the present embodiment, wherein for being placed in anode
Piece, negative electrode tab diaphragm bag size it is equal are as follows: long 179mm wide 82mm；
After positive/negative plate enters bag respectively, lamination process will specifically be respectively implanted the diaphragm of positive plate, negative electrode tab
Bag is laminated, and lamellar body is obtained.
It similarly needs lamellar body carrying out aluminum plastic film encapsulation afterwards, carries out electrolyte filling, obtain the monomer of the present embodiment 50Ah
Flexible packing lithium ion battery for electric vehicle.
Embodiment 1:
Technique in the positive plate of the present embodiment, negative electrode tab and the diaphragm used and each process with reference examples phase
Together, it the difference is that only:
Positive plate negative electrode tab is entered bag respectively after obtained positive plate, negative electrode tab by the present embodiment, makes each positive plate, cathode
Piece is located at the center of its corresponding diaphragm bag, wherein the size of the diaphragm bag for being placed in positive plate, negative electrode tab is equal are as follows: long
179mm wide 82mm；
After positive/negative plate enters bag respectively, lamination process will specifically be respectively implanted the diaphragm of positive plate, negative electrode tab
Bag is laminated, and is obtained lamellar body, is aligned the edge of each diaphragm bag.
It similarly needs lamellar body carrying out aluminum plastic film encapsulation afterwards, carries out electrolyte filling, obtain the monomer of the present embodiment 50Ah
Flexible packing lithium ion battery for electric vehicle.
Embodiment 2:
The present embodiment the difference is that only with embodiment 1:
The specification of the plus plate current-collecting body of the present embodiment and the scale lengths of negative current collector are consistent equal are as follows: long 179mm wide
82mm。
Other techniques and technological parameter are same as Example 1.
The soft bag lithium ionic cell of reference examples, embodiment 1, embodiment 2 is taken to carry out short circuit and low voltage experiment respectively, to test
As a result it is averaged, obtains following tests tables of data:
The experimental data table of comparisons
| Project | Short circuit ratio | Low pressure rate |
| Reference examples | 0.82% | 2.23% |
| Embodiment 1 | 0.26% | 0.47% |
| Embodiment 2 | 0.56% | 1.67% |
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (9)
1. a kind of soft bag lithium ionic cell, characterized in that it include: the first diaphragm bag, the second diaphragm bag of stacking facing each other,
It is packaged with a positive plate respectively in each first diaphragm bag；
It is packaged with a negative electrode tab respectively in each second diaphragm bag；
Between the positive plate of arbitrary neighborhood, negative electrode tab between be separated with two membrane layers.
2. soft bag lithium ionic cell according to claim 1, characterized in that the width of the positive plate is narrower than the cathode
The width of piece.
3. soft bag lithium ionic cell according to claim 1, characterized in that the size of the first diaphragm bag, the second diaphragm bag
Unanimously, each edge is aligned when stacking.
4. soft bag lithium ionic cell according to claim 1, characterized in that
First diaphragm bag includes:
Face is covered on the top surface and bottom surface of the positive plate respectively for first membrane layer, the second membrane layer, only it is described just
The tab welding of pole piece from the edge of first membrane layer, the second membrane layer stretch out, other parts be covered on described first every
Between film layer, the second membrane layer；
First membrane layer, the second membrane layer and the positive plate are bonded together face-to-face respectively.
5. soft bag lithium ionic cell according to claim 4, characterized in that
Also distinguish between first membrane layer and the positive plate and between second membrane layer and the positive plate
It is provided with a polyvinylidene fluoride layer,
First membrane layer, the second membrane layer and the positive plate are bonded in by each polyvinylidene fluoride layer respectively
Together.
6. soft bag lithium ionic cell according to claim 1, characterized in that
Second diaphragm bag includes:
Face is covered on the top surface and bottom surface of the negative electrode tab respectively for first membrane layer, the second membrane layer, only described negative
The tab welding of pole piece from the edge of first membrane layer, the second membrane layer stretch out, other parts be covered on described first every
Between film layer, the second membrane layer；
First membrane layer, the second membrane layer and the negative electrode tab are bonded together face-to-face respectively.
7. soft bag lithium ionic cell according to claim 6, characterized in that
Also distinguish between first membrane layer and the negative electrode tab and between second membrane layer and the negative electrode tab
It is provided with a polyvinylidene fluoride layer,
First membrane layer, the second membrane layer and the negative electrode tab are bonded in by each polyvinylidene fluoride layer respectively
Together.
8. soft bag lithium ionic cell according to claim 1, characterized in that
First diaphragm bag includes: the first membrane layer, the second membrane layer,
Face is covered on the top surface and bottom surface of the positive plate respectively for first membrane layer, the second membrane layer, only it is described just
The tab welding of pole piece is stretched out from the edge of first membrane layer, the second membrane layer, and other parts are covered on described first
In membrane layer, the second membrane layer；
First membrane layer, the second membrane layer link together beyond the edge lasers spot welding of the positive plate.
9. soft bag lithium ionic cell according to claim 1, characterized in that
Second diaphragm bag includes: the first membrane layer, the second membrane layer,
Face is covered on the top surface and bottom surface of the negative electrode tab respectively for first membrane layer, the second membrane layer, only described negative
The tab welding of pole piece is stretched out from the edge of first membrane layer, the second membrane layer, and other parts are covered on described first
In membrane layer, the second membrane layer；
First membrane layer, the second membrane layer link together beyond the edge lasers spot welding of the negative electrode tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945008.3A CN109193033B (en) | 2018-08-20 | 2018-08-20 | Soft package lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810945008.3A CN109193033B (en) | 2018-08-20 | 2018-08-20 | Soft package lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109193033A true CN109193033A (en) | 2019-01-11 |
| CN109193033B CN109193033B (en) | 2024-03-26 |
Family
ID=64918748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810945008.3A Active CN109193033B (en) | 2018-08-20 | 2018-08-20 | Soft package lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109193033B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717037Y (en) * | 2004-06-11 | 2005-08-10 | 比亚迪股份有限公司 | Lithium ion battery |
| CN101783420A (en) * | 2009-05-05 | 2010-07-21 | 深圳市雄韬电源科技有限公司 | Method for manufacturing lithium ion battery lamination |
| CN103296314A (en) * | 2013-05-31 | 2013-09-11 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium-ion battery and battery |
-
2018
- 2018-08-20 CN CN201810945008.3A patent/CN109193033B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2717037Y (en) * | 2004-06-11 | 2005-08-10 | 比亚迪股份有限公司 | Lithium ion battery |
| CN101783420A (en) * | 2009-05-05 | 2010-07-21 | 深圳市雄韬电源科技有限公司 | Method for manufacturing lithium ion battery lamination |
| CN103296314A (en) * | 2013-05-31 | 2013-09-11 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium-ion battery and battery |
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| Publication number | Publication date |
|---|---|
| CN109193033B (en) | 2024-03-26 |
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Address after: 423038 Chenzhou Hunan non ferrous metal industry park (export processing zone) East River West Road Applicant after: HUNAN GREPOOW NEW ENERGY CO.,LTD. Address before: 423038 Donghe West Road, Zhuzhou Non-ferrous Metals Industrial Park (Export Processing Zone), Hunan Province Applicant before: HUNAN GREPOOW NEW ENERGY CO.,LTD. |
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