CN203205465U - Polymer battery and flexible packaging film for polymer battery - Google Patents
Polymer battery and flexible packaging film for polymer battery Download PDFInfo
- Publication number
- CN203205465U CN203205465U CN2012207113134U CN201220711313U CN203205465U CN 203205465 U CN203205465 U CN 203205465U CN 2012207113134 U CN2012207113134 U CN 2012207113134U CN 201220711313 U CN201220711313 U CN 201220711313U CN 203205465 U CN203205465 U CN 203205465U
- Authority
- CN
- China
- Prior art keywords
- packaging film
- flexible packaging
- polymer battery
- pit
- battery
- 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
Images
Classifications
-
- 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 provides a flexible packaging film for a polymer battery. The flexible packaging film is formed by folding an aluminum plastic composite film; a pit matched with the shape of a battery cell is formed in at least one folding surface; the folding edge formed during folding serves as a bottom edge of the pit; a notch is formed in the top, in which the folding surface is positioned, of the pit; the bottom of the notch extends to the top of the pit; the position of the pit corresponds to that of a tab on a battery cell. The utility model also provides the polymer battery packaged by employing the flexible packaging film. According to the flexible packaging film provided by the utility model, the notch is formed in a top seal of the battery, the phenomenon that the battery is ultrahigh due to glue extrusion on the top seal is avoided, the battery molding height can be increased, and the battery capacity is improved; meanwhile, the position of the notch corresponds to the position of the tab of the battery cell, the top-seal tab is positioned at the notch, and exposed glue of the tab is conveniently checked.
Description
Technical field
The utility model belongs to the battery technology field, is specifically related to a kind of polymer battery flexible packaging film and a kind of polymer battery.
Background technology
Its structure of polymer battery is formed by shell and electric core (pole piece of namely reeling) heat-sealing at present, this shell becomes shell for adopting drawing die that aluminum-plastic composite membrane is formed with the pit of electric core coupling, in the shell that electric core retainer plate is gone into to cut, then three limits of this shell are sealed and just become polymer battery, as shown in Figure 1, this encapsulating structure top is concordant, no both sides shoulder, when closedtop, be easy to generate the plastic squeeze phenomenon, cause battery superelevation risk easily.The plastic squeeze height that produces when shielding closedtop, the moulding maximum height that is designed and sized to that generally will cut top margin at present before closedtop reduces 0.5-0.8mm, and the battery moulding is highly controlled in maximum magnitude, like this closedtop edge regions width minimizing 0.5-0.8mm; And in order to make the effective involution in closedtop limit, with the pit height of pole piece coupling and with positive/negative plate width also corresponding minimizing, cause the energy density of battery to reduce.In addition, the polymer battery of this structure also is not easy to subsequent survey.
Summary of the invention
The utility model has solved the technical problem that polymer battery closedtop plastic squeeze in the prior art causes electric core height to be difficult to control, energy content of battery density reduces and is not easy to subsequent survey, and a kind of polymer battery flexible packaging film and a kind of polymer battery of new structure is provided.
The technical solution of the utility model is:
A kind of polymer battery flexible packaging film, described polymer battery flexible packaging film is formed by an aluminum-plastic composite membrane doubling, has the pit with electric core form fit at least one foldable plane, and the conduplication side that forms during doubling is a base of pit; The top of the foldable plane at pit place also offers breach, and the bottom of described breach extends to the top of pit, and the position of lug is corresponding on the position of described breach and the electric core.
As further improvement of the utility model, the width of positive pole ear glue is a, and the width of negative lug glue is b, and the spacing between positive pole ear glue and the negative lug glue is c, and the width of breach is d, satisfies following relational expression: d＞a+b+c.
As further improvement of the utility model, the degree of depth of described breach and positive and negative lug glue expose the matched of pit outside.
As further improvement of the utility model, the edges and corners of described breach are equipped with chamfering.
As further improvement of the utility model, described chamfering is of a size of R0.5mm.
As further improvement of the utility model, position corresponding on two foldable planes that doubling forms is equipped with the air bag face, and the air bag face is positioned at a side of pit, two air bag face heat-sealing back formation gasbags.
As further improvement of the utility model, the correspondence position of two foldable planes that doubling forms is equipped with pit.
A kind of polymer battery, described polymer battery comprise electric core, be wrapped in the flexible packaging film of electric wicking surface and be wrapped in the metal shell on flexible packaging film surface; The polymer battery flexible packaging film that described flexible packaging film is provided by the utility model cuts with electric core parcel and after sealing and forms.
The polymer battery flexible packaging film that the utility model provides, by a breach is set above pit, a breach namely is set at the closedtop place, shielded the phenomenon that the closedtop plastic squeeze causes the battery superelevation, and then can increase battery moulding height, be conducive to the lifting of battery capacity; Simultaneously, the position of this breach is corresponding with the position of cell polar ear, and lug is positioned at this indentation, there behind the closedtop, is convenient to check lug glue to expose size.
Description of drawings
Fig. 1 be in the prior art electric core with cut after the structural representation of shell.
Fig. 2 is the structural representation of the polymer battery flexible packaging film that provides of the utility model embodiment one.
Fig. 3 is the structural representation after the polymer battery flexible packaging film flanging of electric core and embodiment one cuts.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of the polymer battery flexible packaging film that provides of the utility model embodiment two.
Fig. 6 is the structural representation after the polymer battery flexible packaging film flanging of electric core and embodiment two cuts.
Fig. 7 is the left view of Fig. 6.
Among the figure, 1---first foldable plane, 2---second foldable plane, 3---positive pole ear glue, 4---negative lug glue, 12---conduplication side; 100---first pit, 200---second pit, 101---first top margin, 102---the first air bag limit, 103---first breach, 201---second top margin, 202---the second air bag limit;
The width of a---positive pole ear glue 3 is,---width of negative lug glue 4 is c---4 spacing is d between positive pole ear glue 3 and the negative lug glue---, and the width of first breach 103 is b, e---the degree of depth of first breach 103, f---lug glue exposes the height of first pit, 100 outsides.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Embodiment one
As shown in Figure 2, present embodiment provides a kind of polymer battery flexible packaging film, described polymer battery flexible packaging film is formed by an aluminum-plastic composite membrane doubling, namely forms after the doubling to have a common base and (be two foldable planes of conduplication side 12, be specially first foldable plane 1 and second foldable plane 2.
As shown in Figure 2, have first pit 100 with electric core form fit on first foldable plane 1, and conduplication side 12 is a base of this first pit 100.The top of the foldable plane at first pit, 100 places (i.e. first foldable plane 1) also offers first breach 103, the bottom of this first breach 103 extends to the top of described first pit 100, and the position at positive and negative lug place is corresponding on the position of this first breach 103 and the electric core.In the utility model, the shape of pit can form by drawing die or diel, and breach can form by blanking die, but is not limited to this.
As shown in Figure 3, the width of positive pole ear glue 3 is a, and the width of negative lug glue 4 is b, and 4 spacing is c between positive pole ear glue 3 and the negative lug glue, and the width of first breach 103 is d, satisfies following relational expression: d＞a+b+c.Namely the edge of the edge of first breach 103 and positive and negative lug glue also has certain distance, for positive and negative lug provides certain movable wider space.
As shown in Figure 3, the degree of depth e of first breach 103 and positive and negative lug glue (being positive pole ear glue 3, negative lug glue 4) expose the height f coupling of these first pit, 100 outsides, i.e. e=f.Therefore, can guarantee that behind closedtop positive and negative lug is exposed to outside this first pit 100, and be positioned at first breach, 103 places, be convenient to subsequent survey lug glue and expose size.
As shown in Figure 2, the edges and corners of first breach 103 are equipped with chamfering.Under the preferable case, described chamfering is of a size of R0.5mm.Setting by to chamfering on first breach 103 prevents that aluminum-plastic composite membrane is scratched.
In the present embodiment, as shown in Figure 2, first foldable plane 1 that doubling forms, the corresponding position of second foldable plane 2 are equipped with the air bag face, and the air bag face is positioned at the same side of first pit 100, namely form gasbag after two air bag faces heat-sealings.This gasbag is used for temporary transient the storage not have the electrolyte in time received by electric wicking, in the cropped removal of electric core encapsulation later stage meeting.
The polymer battery flexible packaging film that present embodiment provides is applicable to the battery product that thickness is less.
Present embodiment also provides a kind of polymer battery, and described polymer battery comprises electric core, be wrapped in the flexible packaging film of electric wicking surface and be wrapped in the metal shell on flexible packaging film surface; Described flexible packaging film is cut after with electric core parcel and heat-sealing by the polymer battery flexible packaging film of present embodiment and forms.
Particularly, the heat seal process of this polymer battery is: electric core is positioned in first pit 100 on first foldable plane 1 of polymer battery flexible packaging film shown in Figure 2, positive and negative lug exposes out in first breach 103 of first pit, 100 tops together with lug glue, and the degree of depth coupling of the exposed height of lug glue and first breach 103; Then first top margin 101 of first foldable plane 1 and second top margin 201 of second foldable plane 2 are sealed, the limit, left side of first foldable plane 1 and the limit, left side of second foldable plane 2 are also sealed, then integral body is changeed 90 ° counterclockwise, make the first air bag limit 102 and the second air bag limit 202 upwards, in the flexible packaging film of this both sides heat-sealing, inject electrolyte, and under vacuum state, the first air bag limit 102 and the second air bag limit 202 are sealed, the air bag face of corresponding position then forms gasbag on first foldable plane 1 and second foldable plane 2, the electrolyte that does not have in time to be received by electric wicking in the flexible packaging film then temporarily is stored in this gasbag, guarantees that the shape of first pit 103 bigger distortion can not take place; Under vacuum state, puncture gasbag then, gas in the flexible packaging film and unnecessary electrolyte are extracted out, and along electric core edge with unnecessary flexible packaging film (comprising gasbag) flanging and cut, as shown in Figure 3 and Figure 4, obtain the polymer battery of present embodiment at last.
Embodiment two
When cell thickness more than 5mm or when other shape specific (special) requirements is arranged, the polymer battery flexible packaging film that then need use present embodiment to provide.The polymer battery flexible packaging film that present embodiment provides and the structure of polymer battery are roughly the same, and difference only is:
The correspondence position of two foldable planes (first foldable plane 1 and second foldable plane 2) that formed by an aluminum-plastic composite membrane doubling is equipped with pit, corresponds to first pit 100 and second pit 200, as shown in Figure 5.Accordingly, second pit, 200 tops of second foldable plane 2 also offer second breach (not shown in the accompanying drawing), are convenient to follow-up heat-sealing.
Accordingly, the heat seal process of follow-up polymer battery is electric core 3 is positioned in first pit 100 on first foldable plane 1 of polymer battery flexible packaging film shown in Figure 5, electricity core thickness is bigger, can protrude from first pit, 100 tops, projection just in time is contained in second pit 200 on second foldable plane 2; Adopt the heat-sealing order identical with embodiment 1 then: first top margin heat-sealing, the limit, left side seals again, inject the heat-sealing of electrolyte rear gasbag limit, bleed, take out unnecessary electrolyte at last, and cut by flanging, as shown in Figure 6 and Figure 7, obtain the polymer battery of present embodiment.
To sum up, the polymer battery flexible packaging film that the utility model provides is by arranging a breach above pit, a breach namely is set at the closedtop place, shield the closedtop plastic squeeze and caused the phenomenon of battery superelevation, and then can increase battery moulding height, be conducive to the lifting of battery capacity.Simultaneously, the position of this breach is corresponding with the position of cell polar ear, and lug is positioned at this indentation, there behind the closedtop, is convenient to check lug glue to expose size.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. polymer battery flexible packaging film, it is characterized in that, described polymer battery flexible packaging film is formed by an aluminum-plastic composite membrane doubling, has the pit with electric core form fit at least one foldable plane, and the conduplication side that forms during doubling is a base of pit; The top of the foldable plane at pit place also offers breach, and the bottom of described breach extends to the top of pit, and the position of lug is corresponding on the position of described breach and the electric core.
2. polymer battery flexible packaging film according to claim 1 is characterized in that, the degree of depth of described breach and positive and negative lug glue expose the matched of pit outside.
3. polymer battery flexible packaging film according to claim 1 is characterized in that, the edges and corners of described breach are equipped with chamfering.
4. polymer battery flexible packaging film according to claim 3 is characterized in that, described chamfering is of a size of R0.5mm.
5. according to each described polymer battery flexible packaging film of claim 1-4, it is characterized in that position corresponding on two foldable planes that doubling forms is equipped with the air bag face, and the air bag face is positioned at a side of pit, two air bag face heat-sealing back formation gasbags.
6. polymer battery flexible packaging film according to claim 1 is characterized in that, the correspondence position of two foldable planes that doubling forms is equipped with pit.
7. a polymer battery is characterized in that, described polymer battery comprises electric core, be wrapped in the flexible packaging film of electric wicking surface and be wrapped in the metal shell on flexible packaging film surface; Described flexible packaging film is cut with electric core parcel and after sealing by each described polymer battery flexible packaging film of claim 1-6 and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207113134U CN203205465U (en) | 2012-12-21 | 2012-12-21 | Polymer battery and flexible packaging film for polymer battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207113134U CN203205465U (en) | 2012-12-21 | 2012-12-21 | Polymer battery and flexible packaging film for polymer battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205465U true CN203205465U (en) | 2013-09-18 |
Family
ID=49149536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207113134U Expired - Lifetime CN203205465U (en) | 2012-12-21 | 2012-12-21 | Polymer battery and flexible packaging film for polymer battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205465U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201412A (en) * | 2014-09-11 | 2014-12-10 | 超源精密电子设备(东莞)有限公司 | Manufacturing method of encapsulated battery |
| CN104332568A (en) * | 2014-09-11 | 2015-02-04 | 超源精密电子设备(东莞)有限公司 | Tab protection zone punching method for battery packaging |
| CN104332646A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Plastic-aluminum film packed cylindrical lithium ion battery and making method thereof |
| CN108400368A (en) * | 2018-01-25 | 2018-08-14 | 苏州三屹晨光自动化科技有限公司 | A kind of battery packaging film Tui Gun closedtops mechanism |
| CN109301149A (en) * | 2018-10-08 | 2019-02-01 | 桑顿新能源科技有限公司 | A kind of packaging method of lithium ion cell polar ear and lithium ion battery |
| CN110085901A (en) * | 2019-05-30 | 2019-08-02 | 珠海格力电器股份有限公司 | Battery |
| CN112397851A (en) * | 2019-07-31 | 2021-02-23 | 东莞新能德科技有限公司 | Battery cell structure and battery structure with same |
| CN117790874A (en) * | 2024-02-01 | 2024-03-29 | 宁德新能源科技有限公司 | Secondary battery and electricity utilization device |
-
2012
- 2012-12-21 CN CN2012207113134U patent/CN203205465U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201412A (en) * | 2014-09-11 | 2014-12-10 | 超源精密电子设备(东莞)有限公司 | Manufacturing method of encapsulated battery |
| CN104332568A (en) * | 2014-09-11 | 2015-02-04 | 超源精密电子设备(东莞)有限公司 | Tab protection zone punching method for battery packaging |
| CN104332568B (en) * | 2014-09-11 | 2016-11-23 | 超源精密电子设备(东莞)有限公司 | A kind of lug protection zone blanking method encapsulating battery |
| CN104332646A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Plastic-aluminum film packed cylindrical lithium ion battery and making method thereof |
| CN108400368A (en) * | 2018-01-25 | 2018-08-14 | 苏州三屹晨光自动化科技有限公司 | A kind of battery packaging film Tui Gun closedtops mechanism |
| CN108400368B (en) * | 2018-01-25 | 2024-03-19 | 苏州三屹晨光自动化科技有限公司 | Battery packaging film pushing, rolling and top sealing mechanism |
| CN109301149A (en) * | 2018-10-08 | 2019-02-01 | 桑顿新能源科技有限公司 | A kind of packaging method of lithium ion cell polar ear and lithium ion battery |
| CN110085901A (en) * | 2019-05-30 | 2019-08-02 | 珠海格力电器股份有限公司 | Battery |
| CN112397851A (en) * | 2019-07-31 | 2021-02-23 | 东莞新能德科技有限公司 | Battery cell structure and battery structure with same |
| CN117790874A (en) * | 2024-02-01 | 2024-03-29 | 宁德新能源科技有限公司 | Secondary battery and electricity utilization device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203205465U (en) | Polymer battery and flexible packaging film for polymer battery | |
| CN207852828U (en) | A kind of soft pack cell | |
| CN204974988U (en) | High -efficient battery packaging film stamping forming mould | |
| CN204464336U (en) | The end enclosure structure of flexible-packed battery | |
| CN205264763U (en) | Aluminum -plastic packaging film lithium ion battery | |
| CN204614821U (en) | Electrochemical energy storage device encapsulating structure and packaging system thereof | |
| CN102623667A (en) | Soft package thin and ultrathin cell structure and manufacturing method thereof | |
| CN103401023A (en) | Air bag support for improving formation performance of flexible-packaging lithium-ion battery and application method of air bag support | |
| CN205646005U (en) | Flexible package lithium ion battery | |
| CN203150623U (en) | Top sealing enclosure of aluminum plastic film soft packaged lithium ion cell | |
| CN106299481A (en) | A kind of soft bag lithium ionic cell encapsulation, drawing liquid forming method | |
| CN203910899U (en) | Battery | |
| CN203950857U (en) | Flexible-packed battery and battery modules | |
| CN202678421U (en) | Flexibly packaged polymer lithium ion battery | |
| CN218160516U (en) | Lithium ion battery and electronic equipment | |
| CN202050017U (en) | Flexible package thin and ultra-thin lithium ion battery | |
| CN207009485U (en) | A kind of flexible packing lithium ion battery packaging film structure | |
| CN104393201A (en) | Aluminum plastic membrane of polymer lithium-ion power cell and shell punching method of aluminum plastic membrane | |
| CN204102955U (en) | A kind of encapsulation end socket of flexible packing lithium ion electric core and packaging system | |
| CN203386855U (en) | Gas bag bracket for flexibly-packed lithium ion cell | |
| CN202434586U (en) | Encapsulation structure for flexible battery | |
| CN208862104U (en) | A kind of folded edges of soft pack cell | |
| CN202495484U (en) | Flexible package lithium ion battery | |
| CN201601188U (en) | Soft packaged cylindrical lithium battery | |
| CN205092272U (en) | Electric core packaging film of cascaded soft package and cascaded laminate polymer battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |