CN208862104U - A kind of folded edges of soft pack cell - Google Patents
A kind of folded edges of soft pack cell Download PDFInfo
- Publication number
- CN208862104U CN208862104U CN201821691013.8U CN201821691013U CN208862104U CN 208862104 U CN208862104 U CN 208862104U CN 201821691013 U CN201821691013 U CN 201821691013U CN 208862104 U CN208862104 U CN 208862104U
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- CN
- China
- Prior art keywords
- flanging
- battery core
- main body
- core main
- soft pack
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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 provides a kind of folded edges of soft pack cell, including battery core main body, the two sides of battery core main body are equipped with seal side, seal side includes the first flanging and the second flanging, first flanging is obliquely outward in the middle part of the side wall of battery core main body, first flanging is connected with the second flanging far from the end of battery core main body, second flanging inflection and the angle of the second flanging and the first flanging are acute angle, upper surface of the highest point of second flanging without departing from battery core main body, lower surface of the minimum point without departing from battery core main body.The utility model can maximally utilize the upper and lower space in seal area under the premise of guaranteeing not damaging the internal structure of battery core main body, reduce the overall width of soft pack cell, promote volume energy density.
Description
Technical field
The utility model belongs to soft pack cell technical field, and in particular to a kind of folded edges of soft pack cell.
Background technique
Lithium ion battery generally comprises battery core and protection circuit plate, and battery core can be divided into aluminum hull battery core, soft pack cell, cylinder electricity
Three kinds of core.Soft pack cell uses laminated aluminum film, highly-safe, the soft-package battery in the case where security risk occurs in structure
At most only meeting air-blowing is split.In addition, soft pack cell the advantages that there are also light, thin, various shapes, therefore the blueness increasingly by market
It looks at.
For the volume energy density for improving soft pack cell, needs to improve the volume utilization of soft-package battery, optimize battery
Structure design.Reduce or compress the trend that unnecessary volume waste has become lithium ion battery design when design as far as possible,
It usually in Soft Roll manufacturing process, need to be packaged, and be the intensity for guaranteeing seal side, the size before encapsulating to seal area has
There is certain requirement, is generally not less than 5mm.If not carrying out flanging to seal side directly to encapsulate, it will increase soft pack cell
Fitted position reduces the volume energy density of battery.Flanging can reduce the overall width of soft pack cell, and it is close to reach promotion energy
The purpose of degree, flanging mode are generally divided into a folding and eighty percent discount, and currently used is eighty percent discount.
Fig. 1 is the prior art one, including flanging one and flanging two, flanging one extend horizontally outward, flanging two and flanging one
It is connected, two inflection of flanging, by scalding together with side guarantees that flanging two fits closely with flanging one.
Fig. 2 is the prior art two, including flanging I and flanging II, and flanging I extends horizontally outward in the middle part of the side wall of battery core,
Flanging II is connected with flanging I, top side wall direction inflection of the flanging II to battery core, and the highest point of flanging II is upper without departing from battery core
Surface.
Currently used flanging technology cannot maximally utilize the upper and lower space in seal area, the overall width of soft pack cell
Greatly, volume energy density is low.
Utility model content
In view of this, the utility model is directed to a kind of folded edges of soft pack cell, can guarantee not damage electricity
Under the premise of the internal structure of core main body, the upper and lower space in seal area is maximally utilized, the overall width of soft pack cell is reduced,
Promote volume energy density.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of folded edges of soft pack cell, including battery core main body, the two sides of battery core main body are equipped with seal side, seal side
Including the first flanging and the second flanging, the first flanging is obliquely outward in the middle part of the side wall of battery core main body, and the first flanging is separate
The end of battery core main body is connected with the second flanging, and the second flanging inflection and the angle of the second flanging and the first flanging are acute angle, the
Upper surface of the highest point of two flangings without departing from battery core main body, lower surface of the minimum point without departing from battery core main body.
Further, the second flanging is located at the outside of the first flanging, the highest point of the second flanging and the upper table of battery core main body
The height in face is equal, and the minimum point of the second flanging is equal with the height of the lower surface of battery core main body.
Further, the side wall of battery core main body is close in the highest point of the second flanging.
Further, battery core main body with a thickness of 5.0-12.0mm.
Further, the material on seal side is aluminum plastic film.
Further, seal side is fixed in battery core main body by adhesive tape.
Compared with the existing technology, the folded edges of soft pack cell described in the utility model have the advantage that
(1) folded edges of soft pack cell described in the utility model, can be in the inside for guaranteeing not damaging battery core main body
Under the premise of structure, seal area space is maximally utilized, reduces the overall width of soft pack cell, promotes volume energy density；
(2) folded edges of soft pack cell described in the utility model still ensure that soft pack cell most when tolerance is larger
Whole size reaches requirement, and difficulty of processing is small.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the structural schematic diagram of the prior art one；
Fig. 2 is the structural schematic diagram of the prior art two；
Fig. 3 is the structural schematic diagram of the folded edges of soft pack cell described in the utility model embodiment；
Fig. 4 is that the folded edges of soft pack cell described in the utility model embodiment stick the structural schematic diagram after adhesive tape.
Description of symbols:
1, battery core main body；2, flanging one；3, flanging two；4, flanging I；5, flanging II；6, the first flanging；7, the second flanging；
8, adhesive tape.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of folded edges of soft pack cell, as shown in figure 3, include battery core main body 1, battery core main body 1 with a thickness of 5.0-
12.0mm.The two sides of battery core main body 1 are equipped with seal side, and the material on seal side is aluminum plastic film.Seal side includes 6 He of the first flanging
Second flanging 7.First flanging 6 is obliquely outward in the middle part of the side wall of battery core main body 1, and the first flanging 6 is far from battery core main body 1
End is connected with the second flanging 7, and the second flanging 7 is located at the outside of the first flanging 6.Second flanging, 7 inflection make the second flanging 7 with
The angle of first flanging 6 is acute angle, and the highest point of the second flanging 7 is without departing from the upper surface of battery core main body 1, and minimum point is without departing from electricity
The lower surface of core main body 1.Optimal, the highest point of the second flanging 7 is equal with the height of the upper surface of battery core main body 1, the second folding
The minimum point on side 7 is equal with the height of the lower surface of battery core main body 1, and the side of battery core main body 1 is close in the highest point of the second flanging 7
Wall.
After having turned down seal side, seal side is fixed in battery core main body 1 by adhesive tape 8.Battery core main body 1 is put into and is taped
In 8 tooling, seal side is shaped using adhesive tape 8.It prevents in subsequent assembling process, the rebound of battery core flanging effect leads to Soft Roll
The overall dimensions of battery core are bigger than normal, influence to assemble, and adhesive tape 8 can protect seal side, avoid seal side from contacting external conductor, out
Existing Abnormal Insulation.It should be noted that not being pressed onto battery core main body 1 as far as possible, i.e. size B is unsuitable too small, damage when Continuous pressing device for stereo-pattern 8
The internal structure of battery core main body 1 causes the electrical property of battery core main body 1 abnormal.
Compare the prior art one, the prior art two and the application below by specific calculating.
The thickness A of battery core main body 1 is 7.0mm, and the thickness D of unilateral battery core main body 1 is 3.5mm, and the width B on seal side should expire
Foot >=3.5mm, seal while width B take minimum dimension be 3.5mm (circular arc at the thickness, flanging when ignoring seal).Three kinds of foldings
Side structure is compared as follows:
1. the prior art one: as shown in Figure 1, the maximum seal side of permission is having a size of B+C=3.5+ using the folded edges
3.5=7mm.
2. the prior art two: as shown in Fig. 2, II 5 full-size E=√ (B of flanging2+(A-D)2)=√ (3.52+(7.0-
3.5)2)≈4.95mm.Using the folded edges, the maximum seal side of permission is existing having a size of B+E=3.5+4.95=8.45mm
The maximum edge sealing size for having technology two to allow increases 1.45mm compared with the prior art one.
3. the utility model: as shown in figure 3,6 full-size F=√ (B of the first flanging2+D2)=√ (3.52+3.52)≈
4.95mm, 7 full-size G=√ (A of the second flanging2+B2)=√ (72+3.52)≈7.83mm.Using the folded edges, allow
Maximum seal side having a size of F+G=4.95+7.83=12.78mm.The maximum edge sealing size that the application allows is compared with the prior art
One increases 5.78mm, and the maximum edge sealing size that the application allows increases 4.33mm compared with the prior art two.
By calculating above it can be concluded that, in the identical situation of width B of the thickness A and seal side of battery core main body 1, three kinds
The range that folded edges require the seal side size of battery core main body 1 has very big difference.Wherein, the flanging of the utility model
Structure can utilize to greatest extent the seal area upper and lower part of battery core main body 1 under the premise of guaranteeing 1 mass of battery core main body
Space.Similarly, in the identical situation of size that the seal side of battery core main body 1 is unfolded, Soft Roll can be reduced to greatest extent
The overall dimensions of battery core improve the volume energy density of soft pack cell.In addition, the ruler that seal side is unfolded in 8 tooling of taping
It is very little to have certain requirement, the minimum generally 5mm of the size of seal side expansion, to guarantee the fitted position prior art of soft pack cell
One seal side tolerance is 7mm-5mm=2mm, and the seal side tolerance of the prior art two is 8.45mm-5mm=3.45mm, this Shen
Seal side tolerance please is 12.78mm-5mm=7.78mm.The utility model is in the biggish situation of tolerance on seal side, still
The overall dimensions that can guarantee soft pack cell, reduce tape 8 tooling difficulty of processing.
In conclusion folded edges described in the utility model, before guaranteeing not damaging the internal structure of battery core main body 1
It puts, has maximally utilized the upper and lower space in seal area, reduce the overall width of soft pack cell, promote volume energy density, and
And tolerance it is larger when still ensure that the final size of soft pack cell reaches requirement, difficulty of processing is small.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of folded edges of soft pack cell, it is characterised in that: including battery core main body (1), the two sides of battery core main body (1) are all provided with
There is seal side, seal side includes the first flanging (6) and the second flanging (7), and the first flanging (6) is from the side wall of battery core main body (1)
Portion is obliquely outward, and the first flanging (6) is connected with the second flanging (7) far from the end of battery core main body (1), the second flanging (7)
Inflection and the second flanging (7) and the angle of the first flanging (6) are acute angle, and the highest point of the second flanging (7) is without departing from battery core main body
(1) upper surface, lower surface of the minimum point without departing from battery core main body (1).
2. the folded edges of soft pack cell according to claim 1, it is characterised in that: the second flanging (7) is located at the first folding
The highest point in the outside on side (6), the second flanging (7) is equal with the height of upper surface of battery core main body (1), the second flanging (7)
Minimum point is equal with the height of lower surface of battery core main body (1).
3. the folded edges of soft pack cell according to claim 2, it is characterised in that: the highest point of the second flanging (7) is tight
Paste the side wall of battery core main body (1).
4. the folded edges of soft pack cell according to claim 1 or 2, it is characterised in that: battery core main body (1) with a thickness of
5.0-12.0mm。
5. the folded edges of soft pack cell according to claim 1 or 2, it is characterised in that: the material on seal side is plastic-aluminum
Film.
6. the folded edges of soft pack cell according to claim 1 or 2, it is characterised in that: seal side is solid by adhesive tape (8)
Surely it arrives on battery core main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691013.8U CN208862104U (en) | 2018-10-18 | 2018-10-18 | A kind of folded edges of soft pack cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821691013.8U CN208862104U (en) | 2018-10-18 | 2018-10-18 | A kind of folded edges of soft pack cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208862104U true CN208862104U (en) | 2019-05-14 |
Family
ID=66421176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821691013.8U Active CN208862104U (en) | 2018-10-18 | 2018-10-18 | A kind of folded edges of soft pack cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208862104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447477A (en) * | 2022-04-08 | 2022-05-06 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
-
2018
- 2018-10-18 CN CN201821691013.8U patent/CN208862104U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114447477A (en) * | 2022-04-08 | 2022-05-06 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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