CN202395076U - Winding structural lithium ion battery packaged by aluminum plastic films - Google Patents
Winding structural lithium ion battery packaged by aluminum plastic films Download PDFInfo
- Publication number
- CN202395076U CN202395076U CN201120554511XU CN201120554511U CN202395076U CN 202395076 U CN202395076 U CN 202395076U CN 201120554511X U CN201120554511X U CN 201120554511XU CN 201120554511 U CN201120554511 U CN 201120554511U CN 202395076 U CN202395076 U CN 202395076U
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- CN
- China
- Prior art keywords
- negative
- lithium ion
- ion battery
- positive
- white edge
- 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.)
- Expired - Lifetime
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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
Abstract
The utility model discloses a winding structural lithium ion battery packaged by aluminum plastic films, which comprises a flat-shaped bare cell. The flat-shaped bare cell comprises a positive plate, a negative plate and a diaphragm, a positive tap and a negative tap respectively welded to the positive plate and the negative plate are arranged at two ends of the flat-shaped bare cell, a positive white edge without active substance coating is reserved on one side of the positive plate welded to the positive tap, and a negative white edge without the active substance coating is reserved on one side of the negative plate welded to the negative tap. Due to the fact that white edges are respectively reserved on one side of the positive plate and one side of the negative plate welded with the taps, inner resistance of a battery is reduced and heavy-current discharging of the lithium ion battery is benefited.
Description
Technical field
The utility model relates to a kind of lithium ion battery, relates in particular to a kind of winding-structure high-power lithium ion battery of aluminum plastic film packing.
Background technology
According to external shape and packaging material classification, the commercialization lithium ion battery can be divided into the rectangular lithium ion battery of rectangular cell, cylindrical battery and the aluminum plastic film packing of metal-back packing at present.The intensity of aluminum plastic film itself is high not as metal-back intensity; So when high temperature, hyperbar appear in inside; Aluminum-plastic composite membrane can break, and sudden and violent exploding can not be taken place, and security performance is higher; And weight energy density is high, cost is low, has huge market prospects in fields such as electric motor car, hybrid electric vehicle, battery-operated motor cycle, electric bicycle, electric tools.
Divide tired according to internal structure; The ion battery of aluminum plastic film lithium packing can be divided into two kinds of winding-structure and laminations; Compare with stacking mechanism, winding-structure has advantages such as production automation degree is high, and equipment investment is low; But the internal resistance of existing winding-structure lithium ion battery is bigger, is difficult to realize heavy-current discharge.
Summary of the invention
The utility model provides a kind of winding-structure lithium ion battery of aluminum plastic film packing, and is big to solve existing winding-structure lithium ion battery internal resistance, is difficult to the problem of heavy-current discharge.
A kind of winding-structure lithium ion battery of aluminum plastic film packing; Comprise the flat-shaped naked electric core of forming by positive plate, negative plate and barrier film; Flat-shaped naked electric core two ends are provided with respectively positive pole ear and the negative lug with positive plate and negative plate welding; One side of said positive plate welding positive pole ear is along the anodal white edge that leaves uncoated active material, and a side of negative plate welding negative lug is along the negative pole white edge that leaves uncoated active material.
The width of said anodal white edge and negative pole white edge is 3～15mm.
The width of said positive pole ear and negative lug is 5～40mm, and thickness is 0.5～3mm.
Said membrane coil around dual-side along the position that is in anodal white edge and negative pole white edge place, promptly every side edge is in the scope between anodal white edge or the negative pole white edge both sides.
One side of the utility model winding-structure positive electrode plate and negative electrode plate of lithium ion battery soldering polar ear has reduced the internal resistance of cell along leaving white edge, helps the heavy-current discharge of lithium ion battery.
Description of drawings
Fig. 1 is the structural representation of the utility model lithium ion battery;
Fig. 2 is the structural representation of the utility model positive plate;
Fig. 3 is the structural representation of the utility model negative plate.
Embodiment
As shown in Figure 1; A kind of winding-structure lithium ion battery of aluminum plastic film packing; Do not comprise Package casing in the diagram, comprise that barrier film is between positive plate 11 and negative plate 12 by the flat-shaped naked electric core 1 that positive plate 11, negative plate 12 and barrier film (not shown) are reeled, concora crush forms.The two ends of flat-shaped naked electric core 1 are welded with positive pole ear 2 and negative lug 3, and the width of positive pole ear 2 and negative lug 3 is 5～40mm, and thickness is 0.5～3mm.
As shown in Figure 2; One side of positive plate 11 welding positive pole ears 2 is along anodal white edge 111 is arranged; One side of negative plate 12 welding negative lug 3 is along negative pole white edge 121 is arranged; The width of anodal white edge 111 and negative pole white edge 121 is 3～15mm, and the barrier film dual-side is along being positioned at anodal white edge 111 and negative pole white edge 121 positions, and promptly dual-side is along between the both sides of anodal white edge or negative pole white edge.
Above-mentioned lithium ion battery welds owing to getting white edge on lug and the pole piece, firm welding, and internal resistance is little, can realize heavy-current discharge.
Claims (4)
1. the winding-structure lithium ion battery of aluminum plastic film packing; Comprise the flat-shaped naked electric core of forming by positive plate, negative plate and barrier film; Flat-shaped naked electric core two ends are provided with respectively positive pole ear and the negative lug with positive plate and negative plate welding; It is characterized in that a side of said positive plate welding positive pole ear is along the anodal white edge that leaves uncoated active material, a side of negative plate welding negative lug is along the negative pole white edge that leaves uncoated active material.
2. winding-structure lithium ion battery according to claim 1 is characterized in that, the width of said anodal white edge and negative pole white edge is 3～15mm.
3. winding-structure lithium ion battery according to claim 1 is characterized in that, the width of said positive pole ear and negative lug is 5～40mm, and thickness is 0.5～3mm.
4. winding-structure lithium ion battery according to claim 1 is characterized in that, said membrane coil around dual-side along being in the position that anodal white edge and negative pole white edge belong to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120554511XU CN202395076U (en) | 2011-12-27 | 2011-12-27 | Winding structural lithium ion battery packaged by aluminum plastic films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120554511XU CN202395076U (en) | 2011-12-27 | 2011-12-27 | Winding structural lithium ion battery packaged by aluminum plastic films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395076U true CN202395076U (en) | 2012-08-22 |
Family
ID=46669980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120554511XU Expired - Lifetime CN202395076U (en) | 2011-12-27 | 2011-12-27 | Winding structural lithium ion battery packaged by aluminum plastic films |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417887A (en) * | 2018-05-21 | 2018-08-17 | 东莞塔菲尔新能源科技有限公司 | A kind of high power type lithium ion cell and preparation method thereof |
-
2011
- 2011-12-27 CN CN201120554511XU patent/CN202395076U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417887A (en) * | 2018-05-21 | 2018-08-17 | 东莞塔菲尔新能源科技有限公司 | A kind of high power type lithium ion cell and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100, 18, Bao Qiao Road, pheasant Town Industrial Park, Huzhou, Zhejiang, Changxing County Patentee after: Zhejiang energy energy Polytron Technologies Inc Address before: 313100, 18, Bao Qiao Road, pheasant Town Industrial Park, Huzhou, Zhejiang, Changxing County Patentee before: Zhejiang Tianneng Energy Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313100, 18, Bao Qiao Road, pheasant Town Industrial Park, Huzhou, Zhejiang, Changxing County Patentee after: Tianneng Shuai Fude Energy Co., Ltd Address before: 313100, 18, Bao Qiao Road, pheasant Town Industrial Park, Huzhou, Zhejiang, Changxing County Patentee before: Zhejiang energy energy Polytron Technologies Inc |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |