CN203039036U - Package structure of lithium ion battery - Google Patents
Package structure of lithium ion battery Download PDFInfo
- Publication number
- CN203039036U CN203039036U CN2012206519507U CN201220651950U CN203039036U CN 203039036 U CN203039036 U CN 203039036U CN 2012206519507 U CN2012206519507 U CN 2012206519507U CN 201220651950 U CN201220651950 U CN 201220651950U CN 203039036 U CN203039036 U CN 203039036U
- Authority
- CN
- China
- Prior art keywords
- battery
- flanging section
- lithium ion
- moulding flanging
- ground floor
- 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
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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 utility model belongs to the field of lithium ion batteries, in particular to a package structure of a lithium ion battery. The package structure comprises a battery cell and an aluminum-plastic composite film coating the battery cell, wherein the aluminum-plastic composite film comprises a forming flange part; the forming flange part comprises a first-layer forming flange part and a second-layer forming flange part; the battery is less than 1.8mm in thickness; and the first-layer forming flange part and the second-layer forming flange part are parallel or intersected. Compared with a double-flange mode, with the adoption of an inverted U-shaped flange mode, the problem that a flange of the battery exceeds the thickness of a battery main body is avoided, and the energy density loss in the thickness direction is reduced. Compared with a no-flange mode, with the adoption of the inverted U-shaped flange mode, while the effective sealing is ensured, the battery sealing loss in the width of the battery is reduced to the greatest extent, the width of the battery is improved effectively, and the energy density of the battery is improved.
Description
Technical field
The utility model belongs to the lithium ion battery field, relates in particular to a kind of lithium ion battery encapsulating structure
.
Background technology
Along with the development of lithium electricity, the thickness requirement of battery is more and more thinner, and energy density requires more and more higher.Traditional soft is sealed assembling structure needs enough effective seal width for guaranteeing no leakage, is to guarantee no leakage and energy density maximum, and double-fold (as Fig. 1) and the pattern of flanging (as Fig. 2) are not usually arranged for ultra-thin battery core.Yet, in slimline battery, this several modes has its drawback; Because cell thickness is less than below 1.8mm, double-fold flanging height easily exceeds the battery core body thickness, causes the loss of energy density on thickness direction, adopts the not pattern of flanging to need to lose the battery core width, causes the loss of final energy density.
The utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and provide a kind of lithium ion battery encapsulating structure, this structure is effectively improved cell widths with respect to traditional not folded edges, for the maximized space that utilizes, the various pros and cons of balance have designed new inverted U flanging, make final flanging width minimum when guaranteeing the effective seal width of slimline battery, thereby promote the energy density of battery.
For achieving the above object, the utility model adopts following technical scheme: a kind of lithium ion battery encapsulating structure, comprise battery core and the aluminum-plastic composite membrane that is coated on described battery core, described aluminum-plastic composite membrane comprises moulding flanging section, described moulding flanging section comprises ground floor moulding flanging section and second layer moulding flanging section, described cell thickness is less than 1.8mm, and described ground floor moulding flanging section is parallel or crossing with described second layer moulding flanging section.
As a kind of improvement of lithium ion battery encapsulating structure described in the utility model, the angle that described ground floor moulding flanging section and described second layer moulding flanging section form is less than 90 degree.
As a kind of improvement of lithium ion battery encapsulating structure described in the utility model, the angle that described ground floor moulding flanging section and described second layer moulding flanging section form is less than 45 degree.
As a kind of improvement of lithium ion battery encapsulating structure described in the utility model, the length of described second layer moulding flanging section is no more than the length of described ground floor moulding flanging section.
As a kind of improvement of lithium ion battery encapsulating structure described in the utility model, the length of described second layer moulding flanging section is no more than the mid point of described ground floor moulding flanging section.
The beneficial effects of the utility model are: the utility model comprises battery core and is coated on the aluminum-plastic composite membrane of battery core, aluminum-plastic composite membrane comprises moulding flanging section, moulding flanging section comprises ground floor moulding flanging section and second layer moulding flanging section, described cell thickness is less than 1.8mm, ground floor moulding flanging section is parallel or crossing with second layer moulding flanging section, than the double-fold pattern, flanging pattern by inverted U, avoid the battery flanging to exceed the problem of battery main body thickness, reduced the loss of energy density on thickness direction; Than the pattern of flanging not, by the flanging pattern of inverted U, when guaranteeing effective seal, maximizedly reduced the loss of battery seal on cell widths, effectively improved cell widths, promoted the energy density of battery.
The accompanying drawing explanation
The double-fold structural representation that Fig. 1 is prior art.
The not folded edges schematic diagram that Fig. 2 is prior art.
The structural representation that Fig. 3 is the utility model embodiment 1.
The structural representation that Fig. 4 is the utility model embodiment 2.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
embodiment 1as shown in Figure 3, a kind of lithium ion battery encapsulating structure, comprise battery core 1 and the aluminum-plastic composite membrane that is coated on battery core 1, aluminum-plastic composite membrane comprises moulding flanging section, and moulding flanging section comprises ground floor moulding flanging section 2 and second layer moulding flanging section 3, wherein, cell thickness is less than 1.8mm, and ground floor moulding flanging section 2 is parallel with second layer moulding flanging section 3.
Preferably, the length of second layer moulding flanging section 3 is no more than the length of ground floor moulding flanging section 2.
More excellent, the length of second layer moulding flanging section 3 is no more than the mid point of ground floor moulding flanging section 2.
Other structure is identical with the structure of embodiment 1, no longer repeats here.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also be changed and be revised above-mentioned execution mode.Therefore, the utility model is not limited to above-mentioned embodiment, and any apparent improvement, replacement or modification that every those skilled in the art have done on basis of the present utility model all belong to protection range of the present utility model.In addition, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (5)
1. a lithium ion battery encapsulating structure, comprise battery core (1) and be coated on the aluminum-plastic composite membrane of described battery core (1), described aluminum-plastic composite membrane comprises moulding flanging section, described moulding flanging section comprises ground floor moulding flanging section (2) and second layer moulding flanging section (3), it is characterized in that: described cell thickness is less than 1.8mm, and described ground floor moulding flanging section (2) is parallel or crossing with described second layer moulding flanging section (3).
2. lithium ion battery encapsulating structure according to claim 1 is characterized in that: the angle that described ground floor moulding flanging section (2) and described second layer moulding flanging section (3) form is less than 90 degree.
3. lithium ion battery encapsulating structure according to claim 2 is characterized in that: the angle that described ground floor moulding flanging section (2) and described second layer moulding flanging section (3) form is less than 45 degree.
4. lithium ion battery encapsulating structure according to claim 1, it is characterized in that: the length of described second layer moulding flanging section (3) is no more than the length of described ground floor moulding flanging section (2).
5. lithium ion battery encapsulating structure according to claim 4, it is characterized in that: the length of described second layer moulding flanging section (3) is no more than the mid point of described ground floor moulding flanging section (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206519507U CN203039036U (en) | 2012-12-03 | 2012-12-03 | Package structure of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206519507U CN203039036U (en) | 2012-12-03 | 2012-12-03 | Package structure of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039036U true CN203039036U (en) | 2013-07-03 |
Family
ID=48691127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206519507U Expired - Lifetime CN203039036U (en) | 2012-12-03 | 2012-12-03 | Package structure of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112840504A (en) * | 2020-03-30 | 2021-05-25 | 宁德新能源科技有限公司 | Packaging structure and battery cell |
-
2012
- 2012-12-03 CN CN2012206519507U patent/CN203039036U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112840504A (en) * | 2020-03-30 | 2021-05-25 | 宁德新能源科技有限公司 | Packaging structure and battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |