CN204156039U - Coiled lithium ion battery constructs - Google Patents
Coiled lithium ion battery constructs Download PDFInfo
- Publication number
- CN204156039U CN204156039U CN201420597372.2U CN201420597372U CN204156039U CN 204156039 U CN204156039 U CN 204156039U CN 201420597372 U CN201420597372 U CN 201420597372U CN 204156039 U CN204156039 U CN 204156039U
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- CN
- China
- Prior art keywords
- battery core
- lithium ion
- ion battery
- air bag
- bag sheet
- 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 - Fee Related
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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
Abstract
The utility model discloses a kind of coiled lithium ion battery structure, it comprises positive plate, negative plate and barrier film, and described positive plate, negative plate and barrier film form battery core through winding, are provided with air bag sheet between described battery core.The utility model coiled lithium ion battery structure is by positive plate, the battery core inside that negative plate and barrier film are formed through winding arranges air bag sheet, the space interval of battery core inside is increased with this, before changing into after injecting electrolyte to product and be standing, carry out cold-hot pressure or fixture shaping to battery the gas in air bag sheet is discharged, also ensure that the spacing between the positive plate of battery core and negative plate simultaneously, make product after cycle charge-discharge, still keep battery core thickness constant, namely the problem on deformation of coiled lithium ion battery after cycle charge-discharge is eliminated, and then ensure charge-discharge performance and the service life cycle of product.
Description
Technical field
The utility model relates to battery structure technical field, especially relates to a kind of coiled lithium ion battery structure.
Background technology
Lithium ion battery has the important advantage of high voltage, high power capacity, and have extended cycle life, security performance is good, make it have broad application prospects in many-sides such as portable electric appts, electric automobile, space technology, national defense industry, become the study hotspot widely paid close attention in recent years.
Current lithium ion battery mainly adopts traditional takeup type and stacked two kinds of structures, wherein stepped construction complex process, efficiency is low and potential safety hazard is relatively many, and although winding-structure technique is simple, production efficiency is high, fail safe and consistency good, but after traditional coiled battery charge and discharge cycles, inside battery pole piece thickness increases, and battery main body produces deformation, and battery main body is twisted state, cell thickness obviously increases, and damages power consumption equipment.
Meanwhile, the change of inside battery pole piece gap is large, and cell thickness is at 10mm with superior pole piece imbibition difficulty, and imbibition is not enough, and when discharge and recharge uses, inside battery pole piece charges, it is uneven to discharge, and can shorten battery.
Utility model content
Based on this, be necessary for the deficiencies in the prior art, a kind of coiled lithium ion battery structure that can solve the problem on deformation after battery cycle charge-discharge be provided, increase battery energy density, improve battery charging and discharging performance and cycle life.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of coiled lithium ion battery structure, it comprises positive plate, negative plate and barrier film, and described positive plate, negative plate and barrier film form battery core through winding, are provided with air bag sheet between described battery core.
Wherein in an embodiment, the anode ear of described positive plate is positioned at side, described battery core one end, and the negative electrode lug of described negative plate is positioned at described battery core one end opposite side.
Wherein in an embodiment, described air bag sheet adopts the sealing of PE film to enclose formation.
Wherein in an embodiment, the thickness of described PE film is 11.98 μm ~ 12.02 μm.
Wherein in an embodiment, the thickness of described PE film is 12 μm.
Wherein in an embodiment, described air bag sheet is arranged on 1/3 ~ 1/2 place of the windings of described battery core.
Wherein in an embodiment, described air bag sheet is arranged on front or the back side of described battery core.
Wherein in an embodiment, in described air bag sheet, be equipped with 5 ~ 10ml gas.
In sum, the utility model coiled lithium ion battery structure is by positive plate, the battery core inside that negative plate and barrier film are formed through winding arranges air bag sheet, the space interval of battery core inside is increased with this, before changing into after injecting electrolyte to product and be standing, carry out cold-hot pressure or fixture shaping to battery the gas in air bag sheet is discharged, also ensure that the spacing between the positive plate of battery core and negative plate simultaneously, make product after cycle charge-discharge, still keep battery core thickness constant, namely the problem on deformation of coiled lithium ion battery after cycle charge-discharge is eliminated, and then ensure charge-discharge performance and the service life cycle of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model coiled lithium ion battery structure;
Fig. 2 is the schematic cross-section of the utility model coiled lithium ion battery structure;
Fig. 3 is the structural representation of the utility model air bag sheet.
Embodiment
For feature of the present utility model, technological means and the specific purposes reached, function can be understood further, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1 to Figure 3, the utility model coiled lithium ion battery structure comprises positive plate 10, negative plate 20 and barrier film (not shown), described positive plate 10, negative plate 20 and barrier film form battery core 100 through winding, the anode ear 11 of described positive plate 10 is positioned at side, described battery core 100 one end, and the negative electrode lug 21 of described negative plate 20 is positioned at described battery core 100 one end opposite side.
Be provided with air bag sheet 30 between described battery core 100, described air bag sheet 30 adopts PE film to seal and encloses formation, and be equipped with 5 ~ 10ml gas in described air bag sheet 30, the thickness of described PE film is 11.98 μm ~ 12.02 μm, and preferred thickness is 12 μm.
Particularly, described air bag sheet 30 is arranged on 1/3 ~ 1/2 place of the windings of described battery core 100, the space interval of battery core 100 inside is increased with this, before changing into after injecting electrolyte to product and be standing, carry out cold-hot pressure or fixture shaping to battery the gas in air bag sheet 30 is discharged, also ensure that the spacing between the positive plate 10 of battery core 100 and negative plate 20 simultaneously, make product after cycle charge-discharge, still keep battery core 100 thickness constant, namely the problem on deformation of coiled lithium ion battery after cycle charge-discharge is eliminated, and then ensure charge-discharge performance and the service life cycle of product.
Described air bag sheet 30 is arranged on front or the back side of described battery core 100, is arranged on causes battery core 100 thickness distribution uneven time breaking in battery core 100 side to prevent air bag sheet 30, so avoid causing product inside battery to charge, electric discharge uneven.
When the utility model specifically makes, the positive plate 10 manually will cut, negative plate 20 and barrier film are folded successively, and its initiating terminal is wound on master file pin, master file needle drive mechanism drives master file pin to rotate, drive the positive plate 10 that initiating terminal has been had good positioning, after negative plate 20 and membrane winding to predetermined thickness, driving mechanism stops, manually air bag sheet 30 is positioned at abreast battery core 100 surface of described predetermined thickness, driving mechanism works, master file pin is driven to continue the making rotated battery core 100, wherein, air bag sheet 30 present position is at 1/3 ~ 1/2 place of the windings of battery core 100, before changing into after injecting electrolyte to product and be standing, carry out cold-hot pressure or fixture shaping to battery the gas in air bag sheet 30 is discharged, also ensure that the spacing between the positive plate 10 of battery core 100 and negative plate 20 simultaneously, make product after cycle charge-discharge, still keep battery core 100 thickness constant, namely eliminate the problem on deformation of coiled lithium ion battery after cycle charge-discharge, and then ensure charge-discharge performance and the service life cycle of product.
In sum, the utility model coiled lithium ion battery structure is by positive plate 10, battery core 100 inside that negative plate 20 and barrier film are formed through winding arranges air bag sheet 30, the space interval of battery core 100 inside is increased with this, before changing into after injecting electrolyte to product and be standing, carry out cold-hot pressure or fixture shaping to battery the gas in air bag sheet 30 is discharged, also ensure that the spacing between the positive plate 10 of battery core 100 and negative plate 20 simultaneously, make product after cycle charge-discharge, still keep battery core 100 thickness constant, namely the problem on deformation of coiled lithium ion battery after cycle charge-discharge is eliminated, and then ensure charge-discharge performance and the service life cycle of product.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with claims.
Claims (8)
1. a coiled lithium ion battery structure, comprise positive plate (10), negative plate (20) and barrier film, described positive plate (10), negative plate (20) and barrier film form battery core (100) through winding, it is characterized in that: be provided with air bag sheet (30) between described battery core (100).
2. coiled lithium ion battery structure according to claim 1, it is characterized in that: the anode ear (11) of described positive plate (10) is positioned at described battery core (100) side, one end, the negative electrode lug (21) of described negative plate (20) is positioned at described battery core (100) one end opposite side.
3. coiled lithium ion battery structure according to claim 1 and 2, is characterized in that: described air bag sheet (30) adopts the sealing of PE film to enclose formation.
4. coiled lithium ion battery structure according to claim 3, is characterized in that: the thickness of described PE film is 11.98 μm ~ 12.02 μm.
5. coiled lithium ion battery structure according to claim 4, is characterized in that: the thickness of described PE film is 12 μm.
6. coiled lithium ion battery structure according to claim 1 and 2, is characterized in that: described air bag sheet (30) is arranged on 1/3 ~ 1/2 place of the windings of described battery core (100).
7. coiled lithium ion battery structure according to claim 1 and 2, is characterized in that: described air bag sheet (30) is arranged on front or the back side of described battery core (100).
8. coiled lithium ion battery structure according to claim 1 and 2, is characterized in that: be equipped with 5 ~ 10ml gas in described air bag sheet (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597372.2U CN204156039U (en) | 2014-10-15 | 2014-10-15 | Coiled lithium ion battery constructs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597372.2U CN204156039U (en) | 2014-10-15 | 2014-10-15 | Coiled lithium ion battery constructs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156039U true CN204156039U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597372.2U Expired - Fee Related CN204156039U (en) | 2014-10-15 | 2014-10-15 | Coiled lithium ion battery constructs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204156039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336418A (en) * | 2018-03-27 | 2018-07-27 | 江苏塔菲尔新能源科技股份有限公司 | A kind of winding process improving battery core dilatancy |
| CN114156522A (en) * | 2021-12-02 | 2022-03-08 | 天津市捷威动力工业有限公司 | Hot-pressing compounding process of low-internal-resistance and high-magnification VDA 590 model soft-package battery cell |
-
2014
- 2014-10-15 CN CN201420597372.2U patent/CN204156039U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336418A (en) * | 2018-03-27 | 2018-07-27 | 江苏塔菲尔新能源科技股份有限公司 | A kind of winding process improving battery core dilatancy |
| CN114156522A (en) * | 2021-12-02 | 2022-03-08 | 天津市捷威动力工业有限公司 | Hot-pressing compounding process of low-internal-resistance and high-magnification VDA 590 model soft-package battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20181015 |