CN209119253U - A kind of Soft Roll large capacity solid polymer lithium ion battery - Google Patents
A kind of Soft Roll large capacity solid polymer lithium ion battery Download PDFInfo
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- CN209119253U CN209119253U CN201821726886.8U CN201821726886U CN209119253U CN 209119253 U CN209119253 U CN 209119253U CN 201821726886 U CN201821726886 U CN 201821726886U CN 209119253 U CN209119253 U CN 209119253U
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- negative electrode
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- lithium ion
- solid polymer
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a kind of Soft Roll large capacity solid polymer lithium ion batteries, and including battery core main body and the flexible packaging film being coated on the outside of battery core main body, the positive and negative electrode of the battery core main body is connected separately with positive pole ear and negative lug；Hot-melt adhesive membrane, heat-sealing between the hot-melt adhesive membrane and flexible packaging film are posted in the positive pole ear and negative lug.The utility model is designed reasonably, battery core main body and positive and negative electrode tab are encapsulated using flexible packaging film and hot-melt adhesive membrane, liquid charging stock addition is few in battery simultaneously, and it is not absorbed or extracts out substantially during processing procedure, so that inside battery is substantially free of free flowable liquid component, with high security, performance is stable, liquid content is low, can pass through the advantages of high current charge-discharge.
Description
Technical field:
The utility model relates to a kind of Soft Roll large capacity solid polymer lithium ion batteries.
Background technique:
The lithium ion battery of widespread adoption is packed frequently with hard shell currently on the market, and there are more liquid electrolytes for inside
Liquid ingredient when unexpected in case of short circuit, super-charge super-discharge, squeezing needle thorn etc., is easy to happen that explosion, leakage burn into are on fire etc. to pacify
Full accident.And the quality of hard shell is relatively high, causes the energy density of battery product relatively low.
In addition, the application for high capacity lithium ion battery, especially monomer capacity are more than 50Ah or even 200Ah or more
When, battery security, battery management system can largely can be improved using without battery system structure in parallel
It can monitor in real time to each piece of battery core in system.And for the requirement without single battery in parallel, for high current charge-discharge
Higher, needing to design reduces the internal resistance of cell and fever.
Utility model content:
The utility model makes improvement for the above-mentioned problems of the prior art, i.e., skill to be solved in the utility model
Art problem is to provide a kind of Soft Roll large capacity solid polymer lithium ion battery, and not only design is reasonable, but also highly-safe, performance
Stablize.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of Soft Roll large capacity solid polymer
Lithium ion battery, including battery core main body and the flexible packaging film being coated on the outside of battery core main body, the positive and negative electrode point of the battery core main body
Positive pole ear and negative lug are not connected with it.
Further, the battery core main body includes multiple positive plates and multiple negative electrode tabs, multiple positive plates and multiple cathode
Piece vertically successively alternately laminated arrangement, and be isolated between positive plate and negative electrode tab by the diaphragm that S-shaped is wound.
Further, the positive plate and negative electrode tab include applying area, and the one end of the applying area is equipped with to extension
The tab area stretched, the tab area of multiple positive plates is overlapped to be connected firmly together and with positive pole ear；The tab of multiple negative electrode tabs
Area is overlapped to be connected firmly together and with negative lug.
Further, one fewer than the piece number of negative electrode tab of the piece number of the positive plate is located at top layer and lowest level cathode
The two sides of the applying area of piece coat active material, the applying area two sides of remaining negative electrode tab in the one side close to positive plate
Face and the applying area two sides of positive plate are also coated with active material.
Further, the tab area of multiple positive plates and the tab area of multiple negative electrode tabs are located at the same side or not ipsilateral.
Further, the tab area of multiple positive plates and the tab sector width of multiple negative electrode tabs are identical, and be more than and its
The 1/3 of connected coating sector width；The applying area size of positive plate is less than the size of negative electrode tab applying area, the applying area of positive plate
It is covered completely by the applying area of negative electrode tab in vertical direction.
Further, the positive plate is aluminium foil or utter misery aluminum foil material；The negative electrode tab is copper foil or utter misery copper foil material
Material.
Further, post hot-melt adhesive membrane in the positive pole ear and negative lug, the hot-melt adhesive membrane with it is soft
Heat-sealing between packaging film.
Further, the positive pole ear is aluminum sheet；The negative lug is copper or nickel or copper nickel plating thin slice.
Compared with prior art, the utility model has the effect that the utility model is designed reasonably, using flexible packaging film
Battery core main body and positive and negative electrode tab are encapsulated with hot-melt adhesive membrane, while liquid charging stock addition is few in battery, and in processing procedure
It is absorbed or extracts out substantially in the process, so that inside battery is substantially free of free flowable liquid component, there is safety
Height, performance are stable, liquid content is low, can pass through the advantages of high current charge-discharge.
Detailed description of the invention:
Fig. 1 is the vertical view organigram of the utility model embodiment；
Fig. 2 is the A-A profile construction schematic diagram in Fig. 1；
Fig. 3 is the vertical view organigram of battery core main body in the utility model embodiment；
Fig. 4 is that the tab area of positive plate and the tab of negative electrode tab are located at not ipsilateral organigram.
In figure:
1- battery core main body；2- flexible packaging film；3- positive pole ear；4- negative lug；5- positive plate；The coating of 501- positive plate
Area；The tab area of 502- positive plate；6- negative electrode tab；The applying area of 601-- negative electrode tab；The tab area of 602- negative electrode tab；7- diaphragm；
8- hot-melt adhesive membrane.
Specific embodiment:
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
As shown in figures 1-4, a kind of Soft Roll large capacity solid polymer lithium ion battery of the utility model, including battery core master
Body 1 and the flexible packaging film 2 for being coated on 1 outside of battery core main body, the flexible packaging film 2 use aluminum-plastic composite membrane, the battery core main body 1
Positive and negative electrode be connected separately with positive pole ear 3 and negative lug 4.
In the present embodiment, the battery core main body 1 includes multiple positive plates 5 and multiple negative electrode tabs 6, multiple positive plates 5 with it is more
A negative electrode tab 6 vertically successively alternately laminated arrangement, and the diaphragm 7 wound between positive plate 5 and negative electrode tab 6 by S-shaped every
From.
In the present embodiment, the positive plate 5 and negative electrode tab 6 include applying area, the one end of the applying area be equipped with to
The tab area of outer extension, the overlapped anode and and just for constituting battery core main body 1 together in the tab area 502 of multiple positive plates
Pole tab 3 welds together；The overlapped cathode for constituting battery core main body 1 together in the tab area 602 of multiple negative electrode tabs is simultaneously equal
Weld together with negative lug 4.
In the present embodiment, the piece number of the positive plate 5 one fewer than the piece number of negative electrode tab 6, that is, 1 top layer of battery core main body
It is negative electrode tab with undermost pole piece, in close to positive plate on the applying area 601 of top layer and undermost negative electrode tab
One side coat active material, 601 two sides of applying area of remaining negative electrode tab and 501 two sides of applying area of positive plate are also equal
Coated with active material.
In the present embodiment, in the side far from positive plate 5 on the applying area 601 of top layer and undermost negative electrode tab
Face is also coated with active material.
In the present embodiment, the tab area 502 of multiple positive plates and the tab area 602 of multiple negative electrode tabs are located at the same side or not
It is ipsilateral.
In the present embodiment, the tab area 502 of multiple positive plates and the tab area 602 of multiple negative electrode tabs are of same size, and
More than the 1/3 of coupled coating sector width；The applying area size of positive plate is less than the size of negative electrode tab applying area, i.e., positive
The length of the applying area of piece, width are respectively smaller than the length of the applying area of negative electrode tab, width；The applying area of positive plate is in vertical side
To completely by the applying area covering of negative electrode tab.
In the present embodiment, the diaphragm 7 is double-layered compound film, including substrate and ceramic coating；Diaphragm is in battery core main body
Be laminated and wind for continuous S-shaped, each level of stacking product is identical, be respectively inserted in each positive plate and negative electrode tab gap and
The outside of top layer and lowest level negative electrode tab.The each level product of the diaphragm after folding is slightly larger than the applying area face of negative electrode tab
Product and the applying area that negative electrode tab is completely covered in vertical direction.For drawing the pole of negative electrode tab at the longitudinal opening of the diaphragm
The tab area of ear field and positive plate sum.
In the present embodiment, the positive plate 5 is aluminium foil or utter misery aluminum foil material；The negative electrode tab 6 is copper foil or utter misery copper
Foil material.
In the present embodiment, hot-melt adhesive membrane 8, the hot-melt adhesive membrane are posted in the positive pole ear 3 and negative lug 4
Heat-sealing between 8 and flexible packaging film 2.Preferably, the hot-melt adhesive membrane uses polypropylene PP.
In the present embodiment, the positive pole ear 3 is aluminum sheet；The negative lug 4 is copper or nickel or copper nickel plating thin slice.
In the present embodiment, free flowable liquid component is substantially free of in the battery.
Embodiment 1: the Soft Roll large capacity solid polymer lithium ion battery of one piece of 320Ah of production, flexible packaging film use aluminium
Composite membrane is moulded, battery core main body includes 30 positive plates and 31 negative electrode tabs, and positive plate uses the utter misery aluminium foil of 18 μ m thicks, cathode
Piece uses the copper foil of 8 μ m-thicks；Length × width of positive plate applying area is 600mm × 400mm, radius of corner 30mm；Negative electrode tab coating
Length × the width in area is 604 × 404mm, radius of corner 30mm.The tab head of district is wide having a size of 220 × 14mm.
The tab area of positive plate and the tab area of negative electrode tab are located at the same side, and the width in tab area is 220mm；Positive pole
Ear is the aluminium flake of thickness 0.4mm, and negative lug is the copper nickel plating thin slice of thickness 0.3mm, the hot-melt adhesive membrane on positive and negative electrode tab
Using polypropylene PP.
Embodiment 2: the Soft Roll large capacity solid polymer lithium ion battery of one piece of 750Ah of production, flexible packaging film use aluminium
Composite membrane is moulded, battery core main body includes 47 positive plates and 48 negative electrode tabs, and positive plate uses the utter misery aluminium foil of 14 μ m thicks, cathode
Piece uses the copper foil of 6 μ m-thicks.Length × width of positive plate applying area is 900mm × 400mm, radius of corner 25mm；Negative electrode tab coating
Length × the width in area is 904 × 404mm, radius of corner 25mm.The tab head of district is wide having a size of 310 × 16mm.
The tab area of positive plate and the tab area of negative electrode tab are located at the same side, and the width in tab area is 310mm, positive pole
Ear is the aluminium flake of thickness 0.4mm, and negative lug is the copper nickel plating thin slice of thickness 0.3mm, the hot-melt adhesive membrane on positive and negative electrode tab
Using polypropylene PP.
Embodiment 3: the distinctive points of the embodiment and embodiment 2 are: the tab area of positive plate and the tab area of negative electrode tab
It is drawn respectively from the two sides of battery core main body, that is, is located at different sides.
The above is only the preferred embodiment of the present invention, it is all done according to present utility model application the scope of the patents it is equal
Deng variation and modification, it should all belong to the covering scope of the utility model.
Claims (9)
1. a kind of Soft Roll large capacity solid polymer lithium ion battery, it is characterised in that: including battery core main body and be coated on battery core
The positive and negative electrode of flexible packaging film on the outside of main body, the battery core main body is connected separately with positive pole ear and negative lug.
2. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 1, it is characterised in that: the electricity
Core main body includes multiple positive plates and multiple negative electrode tabs, multiple positive plates and multiple negative electrode tabs vertically successively alternating layer laying up
It sets, and is isolated between positive plate and negative electrode tab by the diaphragm that S-shaped is wound.
3. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 2, it is characterised in that: it is described just
Pole piece and negative electrode tab include applying area, the one end of applying area tab area with outward extension, multiple positive plates
Tab area is overlapped to be connected firmly together and with positive pole ear；The tab area of multiple negative electrode tabs it is overlapped together and and cathode
Tab connects firmly.
4. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 3, it is characterised in that: it is described just
The piece number of pole piece one fewer than the piece number of negative electrode tab, positioned at top layer and the applying area of lowest level negative electrode tab two sides or in
One side close to positive plate coats active material, the applying area two sides of remaining negative electrode tab and the applying area two sides of positive plate
Also it is coated with active material.
5. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 3, it is characterised in that: Duo Gezheng
The tab area of pole piece and the tab area of multiple negative electrode tabs are located at the same side or not ipsilateral.
6. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 3, it is characterised in that: Duo Gezheng
The tab area of pole piece and the tab sector width of multiple negative electrode tabs are identical, and are more than the 1/3 of coupled coating sector width；Just
The applying area size of pole piece is less than the size of negative electrode tab applying area, and the applying area of positive plate is in vertical direction completely by negative electrode tab
Applying area covering.
7. a kind of Soft Roll large capacity solid polymer lithium ion battery, feature according to claim 2~6 any one
Be: the positive plate is aluminium foil or utter misery aluminum foil material；The negative electrode tab is copper foil or utter misery copper foil material.
8. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 1, it is characterised in that: it is described just
Hot-melt adhesive membrane, heat-sealing between the hot-melt adhesive membrane and flexible packaging film are posted in pole tab and negative lug.
9. a kind of Soft Roll large capacity solid polymer lithium ion battery according to claim 8, it is characterised in that: it is described just
Pole tab is aluminum sheet；The negative lug is copper or nickel or copper nickel plating thin slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821726886.8U CN209119253U (en) | 2018-10-24 | 2018-10-24 | A kind of Soft Roll large capacity solid polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821726886.8U CN209119253U (en) | 2018-10-24 | 2018-10-24 | A kind of Soft Roll large capacity solid polymer lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN209119253U true CN209119253U (en) | 2019-07-16 |
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ID=67202042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821726886.8U Active CN209119253U (en) | 2018-10-24 | 2018-10-24 | A kind of Soft Roll large capacity solid polymer lithium ion battery |
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| Country | Link |
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| CN (1) | CN209119253U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037788A (en) * | 2018-10-24 | 2018-12-18 | 福建巨电新能源股份有限公司 | A kind of Soft Roll large capacity solid polymer lithium ion battery and its application |
| WO2022198503A1 (en) * | 2021-03-24 | 2022-09-29 | 宁德新能源科技有限公司 | Battery cell and power consuming apparatus |
-
2018
- 2018-10-24 CN CN201821726886.8U patent/CN209119253U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037788A (en) * | 2018-10-24 | 2018-12-18 | 福建巨电新能源股份有限公司 | A kind of Soft Roll large capacity solid polymer lithium ion battery and its application |
| CN109037788B (en) * | 2018-10-24 | 2024-04-12 | 福建巨电新能源股份有限公司 | Soft package high-capacity solid polymer lithium ion battery and application thereof |
| WO2022198503A1 (en) * | 2021-03-24 | 2022-09-29 | 宁德新能源科技有限公司 | Battery cell and power consuming apparatus |
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