CN206412428U - A kind of lithium ion battery - Google Patents
A kind of lithium ion battery Download PDFInfo
- Publication number
- CN206412428U CN206412428U CN201621371481.8U CN201621371481U CN206412428U CN 206412428 U CN206412428 U CN 206412428U CN 201621371481 U CN201621371481 U CN 201621371481U CN 206412428 U CN206412428 U CN 206412428U
- Authority
- CN
- China
- Prior art keywords
- battery core
- air bag
- groove
- encapsulating film
- 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.)
- Active
Links
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
-
- 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
A kind of lithium ion battery, including：Battery core and the aluminum plastic film for coating the battery core, the battery core by anode pole piece, cathode pole piece and membrane winding or it is stacked form, lug is welded with battery core；The battery core standing groove and air bag groove for accommodating battery core are formed on the aluminum plastic film, the air bag groove is located at the side of the battery core standing groove, and the air bag groove is in flattening shape after the completion of battery core encapsulation.The utility model sets the gas that the air bag groove for becoming and flattening, air bag groove are produced in being both melted into for storage in battery core standing groove side, while ensuring that electrolyte will not excessively flow out, and reduces the consumption of aluminum plastic film, reduces cost.
Description
Technical field
The utility model belongs to lithium battery manufacturing technology field, more particularly to a kind of lithium ion battery with gasbag.
Background technology
With the high speed development of modern science and technology, using smart mobile phone and tablet personal computer as the electronic product of representative also increasingly
Many appears among daily life.As important component-battery of electronic product, its performance is also increasingly subject to
The attention of manufacturer.Lithium battery is mainly made up of positive pole, negative pole, barrier film and electrolyte, is assembled via after laminated aluminum film
Into battery core.Battery is had to by formation process after the completion of assembling first, and line activating is entered to it, and can be produced in formation process
Raw more gas, can be in cell package in battery side setting gasbag, for storing during chemical conversion in order to exclude gas in time
The gas of generation, gasbag is cut off after the completion of chemical conversion when carrying out secondary encapsulation.But how can so cause the waste of material
This waste is reduced as far as possible, cost is reduced, and receives the attention of numerous battery manufacturers.
In order to overcome problem above, battery producer starts to be improved the structure of battery gasbag, such as Application No.
200710075751.X, 201510201356.5 and the Chinese invention patent application such as 201610206113.6, by battery core
Above or below carry out stamp formation groove on unnecessary aluminum plastic film, encapsulation rearward recess as storage gas gasbag, to save
Cost-saving, but gasbag is placed in lug top or the lower section of battery core by aforementioned patent, is unfavorable for encapsulating and is melted into：Work as gas
When pouch is below battery core, because liquid injection port is located at gasbag side, it is aged after unfavorable fluid injection, and lug sweeps away and is aged
When, lug is easily damaged, is not fixed easily；If by lug horizontal positioned, electrolyte can flow out from battery core again, reduce ageing effect
Really, battery core performance is influenceed.When gasbag is above battery core, is set with lug homonymy, encapsulation difficulty can be increased, void is easily caused
Envelope, causes battery core to be corroded.And aforementioned patent is after aluminum plastic film formation air bag groove, due to space increase, chemical conversion increase pressure
Electrolyte can be made easily to be extruded battery core, cause electrolyte to protect liquid measure reduction, influence battery core performance.
Utility model content
The purpose of this utility model is to provide a kind of lithium ion battery for having and improveing airbag structure.
To achieve these goals, the utility model takes following technical solution：
A kind of lithium ion battery, including：Battery core and the aluminum plastic film for coating the battery core, the battery core is by anode pole piece, negative
Pole pole piece and membrane winding or it is stacked form, lug is welded with battery core；The battery core that receiving battery core is formed on the aluminum plastic film is put
Groove and air bag groove are put, the air bag groove is located at the side of the battery core standing groove, and the air bag groove is in after the completion of battery core encapsulation
Flattening shape.
Improve, left on the aluminum plastic film positioned at battery core standing groove both sides as one kind of the utility model lithium ion battery
First encapsulating film and the second encapsulating film, the air bag groove are located on the first encapsulating film and/or the second encapsulating film.
Improved as one kind of the utility model lithium ion battery, the area phase of first encapsulating film and the second encapsulating film
Deng.
Improved as one kind of the utility model lithium ion battery, the air bag groove is formed on the second encapsulating film, air bag
The recessed direction of groove is consistent with the direction that battery core standing groove is recessed.
Improved as one kind of the utility model lithium ion battery, after the battery core is put into battery core standing groove, described the
One encapsulating film is folded and covers the battery core standing groove, and the air bag groove is covered after the second encapsulating film doubling.
Improved as one kind of the utility model lithium ion battery, the air bag groove is located at the second encapsulating film doubling center line
Outside.
Improved as one kind of the utility model lithium ion battery, the area of first encapsulating film is more than second envelope
The area of film is filled, the air bag groove is formed on the second encapsulating film, the recessed direction of air bag groove and the recessed side of battery core standing groove
To consistent, after battery core is put into battery core standing groove, first encapsulating film folds and covers the battery core standing groove and air bag groove.
From above technical scheme, the utility model stamp formation on the aluminum plastic film of packaging electric core is located at battery core and placed
The gasbag of groove side, reduces the consumption of aluminum plastic film, reduces cost, and do not interfere with the position of gasbag during chemical conversion
The placement of lug, reduces encapsulation difficulty, and gasbag is collapsed state after packaging is accomplished, it can be ensured that electric in formation process
Solution liquid will not excessively flow out, and the liquid measure of electrolyte be kept, while the gas produced when can store chemical conversion again.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment battery core；
Fig. 2 is structural representation when the utility model embodiment aluminum plastic film is unencapsulated；
Fig. 3 is the schematic diagram after aluminum plastic film is encapsulated；
Fig. 4 is the schematic diagram after air bag groove is flattened.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, when the utility model embodiment is described in detail, for ease of
Illustrate, represent that the accompanying drawing of device architecture can disobey general ratio and do partial enlargement, and the schematic diagram is example, and it is herein
The scope of the utility model protection should not be limited.It should be noted that accompanying drawing using simplified form and using it is non-accurately
Ratio, only to convenient, clearly aid illustration the utility model embodiment purpose.
Lithium ion battery of the present utility model includes the aluminum plastic film of core and cladding core, and core is by anode pole piece, negative pole
Pole piece and membrane winding or it is stacked form, lug is welded with battery core.Fig. 1 show anode pole piece, cathode pole piece and membrane coil
Around the core 100 of formation.Battery core is coated by the aluminum plastic film for being formed with battery core standing groove, and is contained in the battery core placement of aluminum plastic film
In groove.
For the ease of description, above and below length direction (direction parallel with the lug bearing of trend) definition of battery core, with
Width (the perpendicular direction with lug bearing of trend) the definition left and right of battery core, is located at the side of battery core standing groove in aluminum plastic film
Side (left side and/or right side) has an air bag groove, and the air bag groove is the state being crushed after the completion of aluminum plastic film encapsulation, makes battery core
The aluminum plastic film of side is without raised structure.
With reference to Fig. 2 to Fig. 4, to lithium ion battery of the present utility model by taking model 355770G battery as an example
Manufacturing process is illustrated：The height of the core of the present embodiment is 67mm, and width is 56mm, and thickness is 3.1mm；
Meet battery core size as shown in Fig. 2 aluminum plastic film is cut into, then the stamp on aluminum plastic film 1, form battery core and place
Groove 1a, battery core standing groove the 1a left and right sides reserve the first encapsulating film s1 and the second encapsulating film s2, more specifically, the first encapsulating film s1
With the second encapsulating film s2 area equation；A length of 139mm, a width of 71mm of the aluminum plastic film of the present embodiment, the length of battery core standing groove
For 67mm, a width of 57mm, depth is 3.4mm；
The stamp again on the aluminum plastic film of battery core standing groove 1a sides, forms air bag groove 1b, the air bag groove of the present embodiment
1b is formed on the second encapsulating film s2, and air bag groove 1b (is put positioned at the second encapsulating film s2 doubling center lines a outside away from battery core
Put the side of groove), air bag groove 1b a length of 33mm, a width of 25mm, depth are 3.4mm, and the recessed direction of air bag groove and battery core are placed
The recessed direction of groove is consistent；
Battery core is put into battery core standing groove, by the first encapsulating film s1, that is, the aluminum plastic film for being formed without air bag groove is folded simultaneously
Battery core standing groove is covered, and by the second encapsulating film s2 doublings, air bag groove 1b is also covered by aluminum plastic film, then seals edge sealing, this
When air bag groove 1b protrude from the aluminum plastic film surface completed after encapsulation, as shown in Figure 3；
Air bag groove 1b is flattened after encapsulation, makes on aluminum plastic film without projection, forms the battery core with the gasbag being crushed,
As shown in Figure 4.
The utility model forms air bag groove in the left side of battery core standing groove or right side, and encapsulation rear gasbag groove is located at the one of battery core
Side, then flattens air bag groove, and it is that, without projection, the air bag groove being crushed does not have before gas entrance to make aluminum plastic film surface renewal
Unnecessary space, battery core is when pressurizeing chemical conversion, and the electrolyte in battery core may not flow into air bag slot space, cause electrolyte excessive
Outflow, when generation gas enter air bag groove after the air bag trench brace of flattening is opened so that air bag groove can store gas, now by
Increase in pressure in the presence of gas, air bag groove, even if air bag groove is strutted completely, also ensure that electrolyte will not cross multithread
Go out inside battery core.The utility model sets the air bag groove being crushed in battery core side, can avoid in the prior art in aluminum plastic film
On leave groove, cause battery core side space increase, increased pressure makes electrolyte easily be extruded battery core during chemical conversion, causes electricity
Solution liquid protects liquid measure reduction and influences battery core performance.The utility model is reduced in the case where ensureing that battery core performance is unaffected
Aluminum plastic film consumption, reduces production cost.
Certainly, technical concept of the present utility model is not limited in above-described embodiment, can also be according to of the present utility model
Design obtains many different concrete schemes, for example, position and the size of air bag groove, or even quantity can change, not
Necessarily according to described in embodiment；Air bag groove can be located at the outside of the doubling center line of the second encapsulating film, can also be located at second
The inner side of the doubling center line of encapsulating film；The size of first encapsulating film and the second encapsulating film can also be different, when the first encapsulating film
When area is big, it is packaged after making the first encapsulating film while covering battery core standing groove and air bag groove；Or it is identical in area
The first encapsulating film and the second encapsulating film be respectively formed on air bag groove；Such as these change and equivalent transformation should be included in this reality
With it is new it is described within the scope of.
Claims (7)
1. a kind of lithium ion battery, including：Battery core and the aluminum plastic film for coating the battery core, the battery core is by anode pole piece, negative pole
Pole piece and membrane winding or it is stacked form, lug is welded with battery core；
It is characterized in that：
The battery core standing groove and air bag groove for accommodating battery core are formed on the aluminum plastic film, the air bag groove is located at the battery core standing groove
Side, the air bag groove battery core encapsulation after the completion of be in flattening shape.
2. lithium ion battery as claimed in claim 1, it is characterised in that：Stayed on the aluminum plastic film positioned at battery core standing groove both sides
Go out the first encapsulating film and the second encapsulating film, the air bag groove is located on the first encapsulating film and/or the second encapsulating film.
3. lithium ion battery as claimed in claim 2, it is characterised in that：The area of first encapsulating film and the second encapsulating film
It is equal.
4. lithium ion battery as claimed in claim 2 or claim 3, it is characterised in that：The air bag groove is formed on the second encapsulating film,
The recessed direction of air bag groove is consistent with the direction that battery core standing groove is recessed.
5. lithium ion battery as claimed in claim 4, it is characterised in that：It is described after the battery core is put into battery core standing groove
First encapsulating film is folded and covers the battery core standing groove, and the air bag groove is covered after the second encapsulating film doubling.
6. lithium ion battery as claimed in claim 4, it is characterised in that：The air bag groove is located at the second encapsulating film doubling center
The outside of line.
7. lithium ion battery as claimed in claim 4, it is characterised in that：The area of first encapsulating film is more than described second
The area of encapsulating film, the air bag groove is formed on the second encapsulating film, and the recessed direction of air bag groove and battery core standing groove are recessed
Direction is consistent, and after battery core is put into battery core standing groove, first encapsulating film folds and covers the battery core standing groove and air bag
Groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621371481.8U CN206412428U (en) | 2016-12-14 | 2016-12-14 | A kind of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621371481.8U CN206412428U (en) | 2016-12-14 | 2016-12-14 | A kind of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412428U true CN206412428U (en) | 2017-08-15 |
Family
ID=59549883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621371481.8U Active CN206412428U (en) | 2016-12-14 | 2016-12-14 | A kind of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670681A (en) * | 2020-12-25 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Rapid aging method for soft-packaged battery cell |
-
2016
- 2016-12-14 CN CN201621371481.8U patent/CN206412428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112670681A (en) * | 2020-12-25 | 2021-04-16 | 珠海冠宇电池股份有限公司 | Rapid aging method for soft-packaged battery cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6445028B2 (en) | Pouch-type secondary battery with a groove in the sealing part | |
| CN109786844A (en) | A kind of battery and its packaging method and terminal | |
| CN201315330Y (en) | Sealing structure of polymer soft cell | |
| CN204067500U (en) | A kind of column lithium ion battery | |
| CN112803125B (en) | Soft package button type lithium ion battery and manufacturing method thereof | |
| CN207038562U (en) | Soft-package battery | |
| CN102403530A (en) | Flexible package lithium ion battery and processing method thereof | |
| CN105161766A (en) | Filling formation method for power type lithium battery | |
| CN206412428U (en) | A kind of lithium ion battery | |
| CN106299481B (en) | A kind of encapsulation of soft bag lithium ionic cell, drawing liquid forming method | |
| CN105633333A (en) | Cylindrical-structure lithium ion battery and preparation method thereof | |
| CN102024995A (en) | Novel lithium ion power battery | |
| CN101350428B (en) | Lithium ion battery and method for assembling the same | |
| CN201440437U (en) | Lithium-ion power battery and battery pack thereof | |
| CN101409360A (en) | Silver-zinc battery | |
| CN202495539U (en) | Lithium ion battery | |
| CN209104266U (en) | Lithium ion battery | |
| CN218160516U (en) | Lithium ion battery and electronic equipment | |
| CN216563327U (en) | Battery case packaging structure | |
| CN102931368B (en) | A kind of flexible packing lithium ion electric core widening structure and preparation method thereof | |
| CN209472063U (en) | A kind of airbag hole support construction | |
| CN210429571U (en) | Soft packet of super capacitor monomer and super capacitor module | |
| JP2005079081A (en) | Thin battery pack | |
| CN208781893U (en) | A kind of flexible packing lithium ion battery | |
| CN102064348A (en) | Making method of novel flexible package lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee after: Zhuhai Guanyu Battery Co.,Ltd. Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee after: ZHUHAI COSLIGHT BATTERY Co.,Ltd. Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Patentee before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |