CN209344134U - A kind of lithium ion battery structure - Google Patents
A kind of lithium ion battery structure Download PDFInfo
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- CN209344134U CN209344134U CN201822224579.6U CN201822224579U CN209344134U CN 209344134 U CN209344134 U CN 209344134U CN 201822224579 U CN201822224579 U CN 201822224579U CN 209344134 U CN209344134 U CN 209344134U
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- Prior art keywords
- supporter
- battery core
- lithium ion
- tab
- naked battery
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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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Abstract
The utility model belongs to technical field of lithium ion more particularly to a kind of lithium ion battery structure, aluminum plastic film covering including naked battery core and the package naked battery core and the tab connecting with the end of the naked battery core；Aluminum plastic film covering edge is equipped with encapsulation region；Supporter is additionally provided in the aluminum plastic film covering, one end of the tab is arranged in the supporter；The supporter is equipped with liquid storage chamber and tab is perforated；Compared with the existing technology, the utility model draws gas and electrolyte extra in naked battery core from the encapsulation region of aluminum plastic film covering when carrying out degasification packaging technology；The gap that extra electrolyte can first pass through between tab perforation and tab inside naked battery core enters the liquid storage chamber of supporter, then is sucked out aluminum plastic film covering；In the process, supporter slows down the number of dropouts of naked battery core electrolyte inside, improves the ownership of naked battery core electrolyte inside and the properties of product of naked battery core.
Description
Technical field
The utility model belongs to technical field of lithium ion more particularly to a kind of lithium ion battery structure.
Background technique
Lithium ion battery has the characteristics that specific energy is high, the service life is long, self-discharge rate is low, light-weight, safe and environmentally protective,
It is the optimal selection of electric car；Wherein, long-life and safety are the important features for guaranteeing power battery normal use.Influence lithium
The factor of ion battery service life and safety is in addition to there are also the designs of battery body, including structure design to select with main material for PACK design
It selects.Electrolyte is one of electric four big main materials of lithium, is the bridge for guaranteeing lithium ion and shuttling in positive and negative anodes；But in lithium electricity use process
In, since the destruction repeatedly and reconstruction of cathode SEI interfacial film can consume part lithium ion, the loss of available lithium ion is caused, into
And influence battery performance and service life.
In existing battery production, degasification encapsulation is the essential step of soft package lithium battery production, and effect is that removing is naked
The interior gas generated of battery core and extra electrolyte are simultaneously packaged, and are the final steps of battery assembly；When naked battery core at this time
The electrolyte of interior reservation is excessive, and the encapsulation for not only resulting in battery is bad, while also increasing the distance between positive/negative plate, causes interior
Resistance increases, but also will cause naked battery core bad order；When the electrolyte retained in naked battery core at this time is very few, and it will affect naked electricity
The performance and used life of core.Therefore, how to improve naked battery core electrolyte inside ownership, at the same do not influence degasification packaging process and
The performance of naked battery core becomes the problem of urgent need to resolve.
Utility model content
The purpose of this utility model is that: in view of the deficiencies of the prior art, and a kind of lithium ion battery structure is provided, with solution
Certainly existing battery can not enable naked battery core maintain certain electrolyte ownership problem in degasification packaging process.
To achieve the goals above, the utility model uses following technical scheme:
A kind of lithium ion battery structure, aluminum plastic film covering including naked battery core and the package naked battery core and with it is described naked
The tab of the end connection of battery core；One end that the aluminum plastic film covering goes out tab is equipped with encapsulation region；It is leaned in the aluminum plastic film covering
The nearly encapsulation region is equipped with supporter, and the supporter is equipped with liquid storage chamber and tab is perforated.
As the preferred embodiment of lithium ion battery structure described in the utility model, the supporter includes the first supporter
With the second supporter, first supporter and second supporter cooperatively form by clamping, bonding or hingedly the branch
Support body.
As the preferred embodiment of lithium ion battery structure described in the utility model, first supporter and described second
At least one in supporter the two is provided with convex clip button, in both first supporter and second supporter at least
One is provided with recessed buckle, and first supporter and second supporter are matched by the bumps of the convex clip button and recessed buckle
Conjunction forms the supporter.
As the preferred embodiment of lithium ion battery structure described in the utility model, first supporter is provided with first
Cavity, second supporter are provided with the second cavity, and first cavity and second cavity cooperatively form the liquid storage
Chamber.
As the preferred embodiment of lithium ion battery structure described in the utility model, first supporter is provided with first
Groove, second supporter are provided with the second groove, and first groove and second groove cooperatively form the tab
Perforation；The width of the tab perforation is greater than the thickness of tab.
As the preferred embodiment of lithium ion battery structure described in the utility model, first supporter and the second support
Shape size is identical.
As the preferred embodiment of lithium ion battery structure described in the utility model, the supporter is equipped with porous structure,
The porous structure energy electrolysis liquid penetrates into the liquid storage chamber.
As the preferred embodiment of lithium ion battery structure described in the utility model, the size of the supporter is respectively less than institute
State the size of naked battery core, the thickness difference of the supporter and naked battery core is 0.5 ~ 10mm, the thickness difference is more preferably 0.5 ~
2mm。
As the preferred embodiment of lithium ion battery structure described in the utility model, the cross sectional shape of the supporter is side
Shape, circle, ellipse, kidney-shaped or " ∞ " font.
As the preferred embodiment of lithium ion battery structure described in the utility model, the supporter is PP supporter, PE
Supporter, PVC supporter, PS supporter or PI supporter.
Compared with the existing technology, the utility model at least has the advantages that
1) for the utility model when carrying out degasification packaging technology, it is extra in naked battery core to draw from the encapsulation region of aluminum plastic film covering
Gas and electrolyte；The gap that extra electrolyte can first pass through between tab perforation and tab inside naked battery core enters support
The liquid storage chamber of body, then it is sucked out aluminum plastic film covering；In the process, supporter slows down the loss of naked battery core electrolyte inside
Amount, improves the ownership of naked battery core electrolyte inside and the properties of product of naked battery core；
2) after completing the degasification encapsulation of naked battery core, the liquid storage chamber of supporter also maintains electrolyte；When naked battery core makes
When with consuming the electrolyte inside naked battery core in the process, the electrolyte in liquid storage chamber can be perforated between tab by tab
Gap is automatically replenished to naked battery core, so that naked battery core is remained optimal electrolyte ownership, is improved making for naked battery core
Use the service life；
3) by the way that supporter is arranged in aluminum plastic film covering, moreover it is possible to play the role of support and the naked battery core of protection, in degasification
Depressed deformation will not occur when encapsulation, and naked battery core is made to be not easy to damage because of external impact, improve making for naked battery core
With service life and product quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural schematic diagram of the first supporter.
Fig. 4 is the cross-sectional view in the direction A-A in Fig. 3.
Fig. 5 is the structural schematic diagram of the second supporter.
Fig. 6 is the cross-sectional view in the direction B-B in Fig. 5.
Fig. 7 is the structural schematic diagram of supporter.
Fig. 8 is the cross-sectional view in the direction C-C in Fig. 7.
Fig. 9 is the supporting body structure schematic diagram equipped with porous structure.
In figure: the naked battery core of 1-；2- aluminum plastic film covering；The encapsulation region 21-；3- tab；4- supporter；401- convex clip button；402-
Recessed buckle；The first supporter of 41-；The second supporter of 42-；43- liquid storage chamber；The first cavity of 431-；The second cavity of 432-；44- is worn
Hole；The first groove of 441-；The second groove of 442-；45- porous structure.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, below in conjunction with specific embodiment and specification
Attached drawing is described in further detail the utility model and its advantages, but the embodiments of the present invention is not limited to
This.
As shown in Fig. 1 ~ 9, a kind of lithium ion battery structure, the aluminum plastic film covering 2 including naked battery core 1 and the naked battery core 1 of package
And the tab 3 being connect with the end of naked battery core 1；One end that aluminum plastic film covering 2 goes out tab 3 is equipped with encapsulation region 21；Aluminum plastic film packet
It is equipped with supporter 4 close to encapsulation region 21 in layer 2, supporter 4 is equipped with liquid storage chamber 43 and tab perforation 44；Supporter 4 can pass through
One supporter 41 and the second supporter 42 match to be formed, or are integrally formed.
First, the utility model draws naked battery core from the encapsulation region of aluminum plastic film covering 2 21 when carrying out degasification packaging technology
Extra gas and electrolyte in 1；The extra electrolyte in naked 1 inside of battery core can first pass through between tab perforation 44 and tab 3
Gap enters the liquid storage chamber 43 of supporter 4, then is sucked out aluminum plastic film covering 2；In the process, supporter 4 slows down naked battery core 1
The number of dropouts of electrolyte inside improves the ownership of naked 1 electrolyte inside of battery core and the properties of product of naked battery core 1.
Second, after completing the degasification encapsulation of naked battery core 1, the liquid storage chamber 43 of supporter 4 also maintains electrolyte；When naked electricity
When core 1 consumes the electrolyte inside naked battery core 1 in use, the electrolyte in liquid storage chamber 43 can pass through tab perforation 44
Gap between tab 3 is automatically replenished to naked battery core 1, so that naked battery core 1 is remained optimal electrolyte ownership, is mentioned
The high service life of naked battery core 1.
Third, by the way that supporter 4 is arranged in aluminum plastic film covering 2, moreover it is possible to play the role of support and the naked battery core 1 of protection,
Depressed deformation will not occur in degasification encapsulation, and naked battery core 1 is made to be not easy to damage because of external impact, improve naked electricity
The service life and product quality of core 1.
Preferably, the first supporter 41 and the second supporter 42 pass through clamping, bonding or hingedly cooperatively form supporter 4.
According to actual production requirement and service condition, suitable connection type is selected to be attached.
Preferably, at least one in 42 the two of the first supporter 41 and the second supporter is provided with convex clip button 401, and first
At least one in 42 the two of supporter 41 and the second supporter is provided with recessed buckle 402, the first supporter 41 and the second support
Body 42 forms supporter 4 by the male-female engagement of convex clip button 401 and recessed buckle 402.By above-mentioned setting, other equipment are not needed
Connection that can be simple and quick forms 4 structure of complete supporter, improves the installation effectiveness of installation supporter 4.
Preferably, the first supporter 41 is provided with the first cavity 431, and the second supporter 42 is provided with the second cavity 432, the
One cavity 431 and the second cavity 432 cooperatively form liquid storage chamber 43.It, only need to be by the first supporter 41 and second by above-mentioned setting
The connection of supporter 42 cooperatively forms supporter 4, can form the liquid storage chamber 43 of supporter 4.
Preferably, the first supporter 41 is provided with the first groove 441, and the second supporter 42 is provided with the second groove 442, the
One groove 441 and the second groove 442 cooperatively form tab perforation 44；The width of tab perforation 44 is greater than the thickness of tab 3.Pass through
First supporter 41 and the connection of the second supporter 42 need to only be cooperatively formed supporter 4, can form supporter 4 by above-mentioned setting
On tab perforation 44, while can guarantee that there are gap electrolysis liquid stream is dynamic between tab perforation 44 and tab 3.
Preferably, the first supporter 41 is identical with 42 geomery of the second supporter.By above-mentioned setting, it is suitable for volume production branch
Support body 4, and be not in the phenomenon that installation misplaces, improve the production efficiency of supporter 4.
Preferably, supporter 4 is equipped with porous structure 45, and porous structure 45 can electrolysis liquid infiltration liquid storage chamber 43.By upper
Setting is stated, the difficulty that electrolyte enters liquid storage chamber 43 is reduced, the electrolyte for improving naked battery core 1 protects liquid measure.
Preferably, the size of supporter 4 is respectively less than the size of naked battery core 1, and the thickness difference of supporter 4 and naked battery core 1 is 0.5
~ 10mm, thickness difference are more preferably 0.5 ~ 2mm.If supporter 4 and the thickness difference of naked battery core 1 are excessive, i.e., supporter 4 is undersized；
When carrying out degasification packaging technology, the electrolyte inside naked battery core 1 is easy to be sucked out, and the electrolyte in naked battery core 1 is caused to subtract
It is few；If supporter 4 and the thickness difference of naked battery core 1 are too small, i.e., supporter 4 is oversized, can greatly increase battery product entirety
Weight, and be not easy to the receiving supporter 4 of aluminum plastic film covering 2, be unfavorable for producing and process.By above-mentioned setting, guarantee support
Body 4 can be contained in aluminum plastic film covering 2, be convenient for production and processing；It ensure that supporter 4 has good electrolyte simultaneously
Liquid measure is protected, the product quality of naked battery core 1 is improved.
Preferably, the cross sectional shape of supporter 4 is rectangular, round, oval, kidney-shaped or " ∞ " font.According to actual
Production requirement and service condition select the supporter 4 of suitable shape.
Preferably, supporter 4 is PP supporter, PE supporter, PVC supporter, PS supporter or PI supporter.According to reality
The production requirement and service condition on border select suitable electrolyte resistance corrosion material and the material with some strength, are supported
The manufacture and production of body 4.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to above-mentioned specific embodiment, all this field skills
It is practical new that art personnel any conspicuous improvement made on the basis of the utility model, replacement or modification belong to this
The protection scope of type.In addition, these terms are intended merely to facilitate although using some specific terms in this specification
It is bright, any restrictions are not constituted to the utility model.
Claims (10)
1. a kind of lithium ion battery structure, aluminum plastic film covering (2) including naked battery core (1) and the package naked battery core (1) and
The tab (3) being connect with the end of the naked battery core (1)；One end that the aluminum plastic film covering (2) goes out tab (3) is equipped with encapsulation region
(21)；It is characterized by: supporter (4) are equipped with close to the encapsulation region (21) in the aluminum plastic film covering (2), the supporter
(4) liquid storage chamber (43) and tab perforation (44) are equipped with.
2. lithium ion battery structure according to claim 1, it is characterised in that: the supporter (4) includes the first support
Body (41) and the second supporter (42), first supporter (41) and second supporter (42) by clamping, bonding or
Hingedly cooperatively form the supporter (4).
3. lithium ion battery structure according to claim 2, it is characterised in that: first supporter (41) and described
At least one in two supporters (42) the two is provided with convex clip button (401), first supporter (41) and second described
At least one in support body (42) the two is provided with recessed buckle (402), first supporter (41) and second supporter
(42) supporter (4) are formed by the male-female engagement of the convex clip button (401) and recessed buckle (402).
4. lithium ion battery structure according to claim 2, it is characterised in that: first supporter (41) is provided with
One cavity (431), second supporter (42) are provided with the second cavity (432), first cavity (431) and described second
Cavity (432) cooperatively forms the liquid storage chamber (43).
5. lithium ion battery structure according to claim 2, it is characterised in that: first supporter (41) is provided with
One groove (441), second supporter (42) are provided with the second groove (442), first groove (441) and described second
Groove (442) cooperatively forms the tab perforation (44)；The width of the tab perforation (44) is greater than the thickness of tab (3).
6. lithium ion battery structure according to claim 2, it is characterised in that: first supporter (41) and second
Support body (42) geomery is identical.
7. lithium ion battery structure according to claim 1, it is characterised in that: the supporter (4) is equipped with porous structure
(45), the porous structure (45) can the electrolysis liquid infiltration liquid storage chamber (43).
8. lithium ion battery structure according to claim 1, it is characterised in that: the size of the supporter (4) is respectively less than
The size of the naked battery core (1)；The thickness difference of the supporter (4) and naked battery core (1) is 0.5 ~ 10mm.
9. lithium ion battery structure according to claim 1, it is characterised in that: the cross sectional shape of the supporter (4) is
Rectangular, round, oval, kidney-shaped or " ∞ " font.
10. lithium ion battery structure according to claim 1, it is characterised in that: the supporter (4) be PP supporter,
PE supporter, PVC supporter, PS supporter or PI supporter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224579.6U CN209344134U (en) | 2018-12-27 | 2018-12-27 | A kind of lithium ion battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822224579.6U CN209344134U (en) | 2018-12-27 | 2018-12-27 | A kind of lithium ion battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209344134U true CN209344134U (en) | 2019-09-03 |
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ID=67759608
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822224579.6U Active CN209344134U (en) | 2018-12-27 | 2018-12-27 | A kind of lithium ion battery structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN209344134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563580A (en) * | 2020-11-30 | 2021-03-26 | 合肥国轩高科动力能源有限公司 | Manufacturing method of soft-package lithium battery capable of improving poor insulation |
-
2018
- 2018-12-27 CN CN201822224579.6U patent/CN209344134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563580A (en) * | 2020-11-30 | 2021-03-26 | 合肥国轩高科动力能源有限公司 | Manufacturing method of soft-package lithium battery capable of improving poor insulation |
| CN112563580B (en) * | 2020-11-30 | 2022-06-03 | 合肥国轩高科动力能源有限公司 | Manufacturing method of soft-package lithium battery capable of improving poor insulation |
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