CN203218392U - Lithium-ion battery structure - Google Patents
Lithium-ion battery structure Download PDFInfo
- Publication number
- CN203218392U CN203218392U CN2013201736193U CN201320173619U CN203218392U CN 203218392 U CN203218392 U CN 203218392U CN 2013201736193 U CN2013201736193 U CN 2013201736193U CN 201320173619 U CN201320173619 U CN 201320173619U CN 203218392 U CN203218392 U CN 203218392U
- Authority
- CN
- China
- Prior art keywords
- ion battery
- lithium
- battery core
- positive pole
- electric core
- 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
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 17
- 239000012785 packaging film Substances 0.000 claims description 10
- 229920006280 packaging film Polymers 0.000 claims description 10
- 239000012528 membrane Substances 0.000 abstract description 12
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
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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
-
- 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
Landscapes
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model relates to the technical field of lithium-ion batteries and particularly relates to a lithium-ion battery structure. The lithium-ion battery structure comprises a packaging membrane, a bare battery core, a positive pole tab and a negative pole tab, wherein the bare battery core is arranged inside the packaging membrane, the positive pole tab and the negative pole tab are electrically connected with the bare battery core respectively, hot edge seals are arranged outside the packaging membrane, and the positive pole tab and the negative pole tab are respectively encapsulated in the hot edge seals; and the hot edge seals are arranged at the two sides or top of the battery core. Compared with the prior art, the lithium-ion battery structure disclosed by the utility model has the advantages that a technique that the tabs are encapsulated in side edge seals of the battery core is adopted, and the tabs are encapsulated in the side edge seals instead of the interior of the bare battery core in the prior art, so that the thickness of the battery core is reduced greatly, and particularly, the problem of capacity loss of thin lithium-ion batteries caused by the fact that the thickness is relatively thin and the space occupied by the tabs is large is solved.
Description
Technical field
The utility model relates to technical field of lithium ion, is specifically related to the thin lithium ion battery structure that a kind of lug is encapsulated in the heat-sealing limit.
Background technology
Lithium ion battery is because environmental protection, the energy density height, and it is deep in people's the life widely as the substitute of traditional secondary cell ni-mh, NI-G, lead-acid battery.As everyone knows, traditional flexible packing lithium ion battery adopts the aluminum-plastic composite membrane of sheet as packaging material.In order to guarantee the sealing of flexible package electricity core, when making electric core, have 1 closedtop limit and the side seal limit that is distributed in both sides usually.
At present commercialization lithium ion battery thickness 3 millimeters to 10 millimeters more, can satisfy general business-like electronic product needs substantially.People were more and more higher for the demand of ultrathin electronic product in recent years, as ultra-thin MP3, ultra thin handset, ultra-thin panel computer etc.It is also more and more higher for the lithium ion battery thickness requirement.When electric core thickness during in 2.0 millimeter, the shared ratio regular meeting of electric in-core portion's inert matter also can strengthen, and this also is thin lithium ion battery energy density one of the main reasons on the low side.In addition, thin lithium ion battery side seal limit can not bend to electric core main direction again, otherwise can cause electric core side seal limit height to surpass electric core main body, causes the lithium ion battery integral thickness to exceed standard, as shown in Figure 1.
So for the electric core of electric core thickness less than the flanging height, traditional lithium ion battery adopts the design that does not bend the side seal limit, like this, electric core width will comprise the side seal limit, can cause electric core integral energy density to descend greatly like this.In view of this, necessaryly provide a kind of new lithium ion battery structure to improve the capacity of thin lithium ion battery.
The utility model content
The purpose of this utility model is: at the deficiency of prior art existence, and provide the lithium ion battery structure of a kind of lug on the side seal limit.
To achieve these goals, the utility model adopts following technical scheme: a kind of lithium ion battery structure, comprise packaging film, naked electric core, positive pole ear and negative lug, naked electric core is arranged at packaging film inside, positive pole ear and negative lug are electrically connected with naked electric core respectively, the packaging film outer setting has the heat-sealing limit, and positive pole ear and negative lug are encapsulated in respectively in the heat-sealing limit, but is no more than heat-sealing hem width degree.
The positive pole ear of lithium ion battery, negative lug are encapsulated in the heat-sealing limit of electric core respectively, have avoided naked electric core main body, do not take the body thickness of electric core, have improved the volume energy density of electric core.
As further improvement of the utility model, the heat-sealing limit is arranged on both sides or the top of electric core.
The beneficial effects of the utility model are: be encapsulated in lithium ion battery heat-sealing limit respectively by positive pole ear, negative lug, removed the influence of lug thickness to electric core thickness, significantly increased the amount of electric in-core active material, improved the packaging efficiency of aluminum-plastic composite membrane, on the indeclinable basis of raw material types, can significantly improve the energy density of lithium ion battery, particularly thin electric core.
Description of drawings
Fig. 1 is traditional lithium ion battery structure schematic cross-section.
Fig. 2 is schematic cross-section of the present utility model.
Fig. 3 is vertical view of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage are more clear, in conjunction with the following drawings, it are further described, with reference to Fig. 1, Fig. 2 and Fig. 3.
A kind of lithium ion battery structure, comprise packaging film, naked electric core, positive pole ear 11 and negative lug 12, naked electric core is arranged at packaging film inside, positive pole ear 11 and negative lug 12 are electrically connected with naked electric core respectively, the packaging film outer setting has heat-sealing limit 13, positive pole ear 11 and negative lug 12 are encapsulated in respectively in the heat-sealing limit 13, but are no more than heat-sealing limit 13 width, and positive pole ear 11 and negative lug 12 are welded on the ending end of positive and negative electrode collector respectively.
Heat-sealing limit 13 is arranged on both sides or the top of electric core.
Wherein, packaging film is aluminum-plastic composite membrane, utilizes punch die that aluminum-plastic composite membrane is gone out a groove, and recess width is identical with aluminum-plastic composite membrane inner chamber width, and along groove base doubling aluminum-plastic composite membrane; According to the design size of pole piece, positive pole ear 11, negative lug 12 are welded on respectively on the positive and negative electrode collector of ending end of pole piece; Barrier film put into finish the coiling operation between the positive and negative electrode pole piece, positive pole ear 11, negative lug 12 lay respectively at left side and the right side of naked electric core; Naked electric core is put into the groove of aluminum-plastic composite membrane, and wherein positive pole ear 11, negative lug 12 lay respectively on the heat-sealing limit 13 of the left and right sides of aluminum-plastic composite membrane, and lug extends outside the aluminum-plastic composite membrane; Carry out packaging process, wherein the heat-sealing limit 13 of a side not exclusively encapsulates, and needs to reserve a liquid injection hole; The electrolyte perfusion; Pre-packaged after the fluid injection; Subsequent handling is with traditional lithium ion battery operation.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.
Claims (2)
1. lithium ion battery structure, comprise packaging film, naked electric core, positive pole ear and negative lug, described naked electric core is arranged at described packaging film inside, described positive pole ear and described negative lug are electrically connected with described naked electric core respectively, it is characterized in that: described packaging film outer setting has the heat-sealing limit, and described positive pole ear and described negative lug are encapsulated in respectively in the described heat-sealing limit.
2. lithium ion battery structure according to claim 1 is characterized in that, described heat-sealing limit is arranged on both sides or the top of electric core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201736193U CN203218392U (en) | 2013-04-09 | 2013-04-09 | Lithium-ion battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201736193U CN203218392U (en) | 2013-04-09 | 2013-04-09 | Lithium-ion battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218392U true CN203218392U (en) | 2013-09-25 |
Family
ID=49207901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201736193U Expired - Lifetime CN203218392U (en) | 2013-04-09 | 2013-04-09 | Lithium-ion battery structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203218392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470560A (en) * | 2015-12-30 | 2016-04-06 | 惠州亿纬锂能股份有限公司 | High-energy lithium-ion battery and winding method therefor |
-
2013
- 2013-04-09 CN CN2013201736193U patent/CN203218392U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470560A (en) * | 2015-12-30 | 2016-04-06 | 惠州亿纬锂能股份有限公司 | High-energy lithium-ion battery and winding method therefor |
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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: 20130925 |
|
| CX01 | Expiry of patent term |