CN206432329U - 3D foils and the special-shaped thin slice lithium ion battery for including the 3D foils - Google Patents
3D foils and the special-shaped thin slice lithium ion battery for including the 3D foils Download PDFInfo
- Publication number
- CN206432329U CN206432329U CN201621335629.2U CN201621335629U CN206432329U CN 206432329 U CN206432329 U CN 206432329U CN 201621335629 U CN201621335629 U CN 201621335629U CN 206432329 U CN206432329 U CN 206432329U
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- Prior art keywords
- hole
- foils
- base material
- raised
- aperture
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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
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- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides a kind of 3D foils and includes the special-shaped thin slice lithium ion battery of the 3D foils, some first through hole are provided with the middle of wherein 3D foils, including base material, the base material, first through hole is surrounded by projection on the base material, and the projection is integrally formed with base material；It is described raised interior provided with the second through hole；Second through-hole side wall is connected parallel to raised side wall, second through hole with first through hole；The first through hole and the aperture of the second through hole junction are more than the aperture of second through hole away from first through hole end.A kind of 3D foils described in the utility model, by the way of mechanical stamping is punched, make foil that there is the 3-D solid structure of first through hole, the second through hole and projection, slurry can be penetrated into inside foil duct in the pore diameter range during coating, improve foil both side surface tension force, the generation of edge-curl phenomenon can be prevented in roller pole piece.
Description
Technical field
The utility model belongs to lithium ion battery preparation field, more particularly, to a kind of 3D foils and includes the 3D foils
Special-shaped thin slice lithium ion battery.
Background technology
As continuing to develop for lithium battery technology improves constantly with requirement of the client to lithium battery, lithium ion battery to
Lighter, thinner, higher capacity direction to develop.After occurring since 18,650 one has been reached in field of lithium ion battery
Individual summit.In order to adapt to the development of productivity, making full use of in lithium ion battery every field, the researcher in the field are realized
Wish to break original yoke in all its bearings then just have Thin film cell, high power battery, special-shaped battery etc..
Special-shaped battery can make the shape of various regular and irregulars, and thickness is more than 0.5mm, can meet client different
Use requirement, such as bluetooth earphone, mobile phone, notebook computer, digital camera, miniature camera, electronic toy, electronic
The portable electrical equipments such as massager, electric car.The thickness of traditional Special-shaped battery is most thin can only to accomplish 0.5mm, limit and use
Scope, and battery capacity is relatively low.
The most basic requirement of Special-shaped battery is exactly that shape is customizable, and thickness is customizable, therefore thickness is also the special-shaped lithium of influence
The key factor of battery development.
Lithium ion battery is the charging for moving back and forth to complete battery in relative positive and negative polarities by lithium ion and put
Electricity, for thin slice Special-shaped battery, it is thus only necessary to one layer of relative positive and negative polarities, there is anode and cathode slurry the side of its collector
Needed for can completing, and the slurry of opposite side can not then play a role, and can remove, it is to avoid the significant wastage of resource, reduce electricity
The thickness and quality in pond, but if special-shaped battery uses traditional base material, unilateral coating will be unable to make battery, can only bilateral
Equal coating, thus causes waste, and limit the thickness of battery., can be because in roller compaction process if there is no reverse side coating
The uneven of surface tension produces edge-curl phenomenon, and such pole piece can not be used.
The content of the invention
In view of this, the utility model is directed to a kind of 3D foils, to overcome prior art defect, have foil
Through hole and have 3-D solid structure concurrently, slurry can be penetrated into inside foil duct while the another side of foil will not be covered largely,
Foil both side surface tension force can be improved, the generation of edge-curl phenomenon can be prevented in roller pole piece.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
First through hole four on some first through hole, the base material is provided with the middle of a kind of 3D foils, including base material, the base material
Week is integrally formed provided with projection, the projection with base material；It is described raised interior provided with the second through hole；Second through-hole side wall is parallel
In raised side wall, second through hole is connected with first through hole；Aperture of the first through hole away from the second through hole end is more than
Equal to first through hole and the aperture of the second through hole junction, the aperture of the first through hole and the second through hole junction is more than described
Aperture of second through hole away from first through hole end.
Further, base material bottom first through hole is surrounded by projection.
Further, it is interval with projection above and below the first through hole surrounding of the base material bottom and top.
Further, the aperture of the first through hole is that the gap between 10 μm~200 μm, two neighboring first through hole is
5 μm~450 μm；The width that some first through hole regions are distributed with the base material is the 5%~95% of substrate width.
Further, the base material is metal foil；The first through hole, the second through hole and project through mechanical stamping one
It is body formed.First through hole, the second through hole and projection can be that one side punching (being punched from one side) is formed or two-sided beaten
Hole (row beats front, and second row beats reverse side, successively alternately) is formed.
Further, the base material is one kind in aluminium foil, copper foil, nickel foil, iron foil, tinfoil paper；The shape of the first through hole
Shape is more than one or both of circle, rectangle, square, triangle, trapezoidal, rhombus, parallelogram, ellipse；Institute
Convex shape is stated for cylinder, cuboid, square, pyramid, terrace with edge, cone, prism, hemisphere, parallelogram, ellipse
One or both of more than composite figure；The angle of the convex side wall and base material is 5 °~90 °.The first through hole
Shape includes but is not limited to above-mentioned shape, as long as regular figure can；The convex shape includes but is not limited to above-mentioned shape
Shape, as long as can guarantee that raised side can for any figure of straight line or camber line.
Further, the raised height is 3 μm~100 μm；Distance of second through-hole side wall to raised outer wall
For 5 μm~100 μm.
It is another object of the present invention to propose a kind of special-shaped thin slice lithium ion for including 3D foils as described above
Battery, to apply above-mentioned 3D foils.
A kind of special-shaped thin slice lithium ion battery for including 3D foils as described above, including positive plate, negative plate and every
Film, the shape of the positive plate, negative plate and barrier film is arc, trapezoidal, annular, semi-circular, rectangle and trapezoidal composite figure
In one kind.
Further, the arc include two just to equal length and the line segment that is parallel to each other and be clipped in two lines section
In at least one camber line.
Further, the battery gross thickness is 0.29mm~0.5mm.
Relative to prior art, a kind of 3D foils of the present invention have the advantage that：
A kind of 3D foils described in the utility model, by the way of mechanical stamping is punched, make foil have first through hole,
Second through hole and raised 3-D solid structure, aperture is about 10~200um, and slurry can penetrate into foil in the pore diameter range
Ensure that slurry largely will not be covered in foil another side by duct, can improve foil both side surface inside duct simultaneously
Power, the generation of edge-curl phenomenon can be prevented in roller pole piece.Meanwhile, the 3D structures of the foil can greatly increase foil and slurry
Adhesive force between material, and then the consumption of glue and additive in slurry can be reduced；In addition, using it for positive plate and negative plate
Preparation, and then prepare lithium ion battery, the thickness of slurry coating can be increased in right amount, and then cause the capacity increase of battery
About 10%~50%, while the cycle performance of battery is improved, and because the presence of three-dimensional structure aperture causes slurry to collector
Electric transmission Distance Shortened, add its electric conductivity, and then improve its charge-discharge magnification.
The special-shaped thin slice lithium ion battery described in the utility model for including 3D foils as described above, using above-mentioned 3D paper tinsels
Material, by mechanical stamping method on conventional substrate, forms the hole of tool 3 D stereo at regular intervals on base material, the hole
Spacing can be 5-450um, and aperture can be 10-200um.In use, making various using the method coated in the 3D foils
The special-shaped battery (the also battery including conventional shape) of shape.The special-shaped battery of making is most thin can to accomplish 0.3mm, but capacity
The capacity of conventional batteries 0.5mm thickness batteries is can reach, the thickness of battery is not only reduced, while also improving the ratio energy of battery
Amount and high rate performance.In addition, variously-shaped ultra-thin special-shaped battery can be made, expand the use scope of special-shaped battery.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the top view of the 3D foils described in the embodiment of the present invention 1；
Fig. 2 is the longitudinal sectional view of the 3D foils described in the embodiment of the present invention 1.
Fig. 3 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 1, born
The schematic shapes of pole piece and barrier film；
Fig. 4 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 2, born
The schematic shapes of pole piece and barrier film；
Fig. 5 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 3, born
The schematic shapes of pole piece and barrier film；
Fig. 6 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 4, born
The schematic shapes of pole piece and barrier film；
Fig. 7 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 5, born
The schematic shapes of pole piece and barrier film；
Fig. 8 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 6, born
The schematic shapes of pole piece and barrier film；
Fig. 9 is the positive plate of the special-shaped thin slice ion battery for including above-mentioned 3D foils described in the embodiment of the present invention 7, born
The schematic shapes of pole piece and barrier film；
Figure 10 be the embodiment of the present invention 8 described in the special-shaped thin slice ion battery for including above-mentioned 3D foils positive plate,
The schematic shapes of negative plate and barrier film；
Figure 11 is the longitudinal sectional view of the 3D foils described in the embodiment of the present invention 8.
Description of reference numerals：
1- base materials；2- first through hole；3- is raised；The through holes of 4- second.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " are defined
Deng feature can express or implicitly include one or more this feature.In description of the present utility model, unless
It is otherwise noted, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1
As depicted in figs. 1 and 2, some first through hole 2, institute are provided with the middle of a kind of 3D foils, including base material 1, the base material 1
State first through hole 2 on base material 1 and be surrounded by projection and 3, described raised 3 be integrally formed with base material 1；Second is provided with described raised 3
Through hole 4；The side wall of second through hole 4 is parallel to the side wall of projection 3, and second through hole 4 connects with first through hole 2；Described
Aperture of one through hole 2 away from the end of the second through hole 4 is more than or equal to the aperture of the junction of 2 and second through hole of first through hole 4, described first
The aperture of the junction of 2 and second through hole of through hole 4 is more than the aperture of the second through hole 4 away from the end of first through hole 2.
The bottom first through hole 2 of base material 1 is surrounded by projection 3.
The aperture of the first through hole 2 is that the gap between 100 μm, two neighboring first through hole 2 is 300 μm.
The width that some regions of first through hole 2 are distributed with is the 90% of substrate width.
The first through hole 2, the second through hole 4 and projection 3 are integrally formed by mechanical stamping.
The base material 1 is aluminium foil, and the length of base material is 800mm, and width is 245mm.
The first through hole 2 is shaped as square；Described raised 3 are shaped as round platform；Raised 3 top side wall
Angle is 60 °.
Raised 3 height is 20 μm；The distance of the side wall of second through hole 4 to raised 3 outer wall is 60 μm.
As shown in figure 3, a kind of special-shaped thin slice lithium ion battery for including 3D foils as described above, including positive plate,
Negative plate and barrier film, the shape of the positive plate, negative plate and barrier film is arc.
The arc include two just to equal length and the line segment that is parallel to each other and be clipped in mutual in two lines section
Parallel camber line convex to the right.
The battery gross thickness is 0.3mm.
Embodiment 2
As shown in figure 4, the present embodiment is substantially the same manner as Example 1, difference be the arc by two just to
Equal length and be parallel to each other line segment, be clipped in the middle of two lines section left side and convex camber line and be clipped in two lines section intermediate right to the right
The vertical line composition of side.
Embodiment 3
As shown in figure 5, the present embodiment is substantially the same manner as Example 1, difference be the positive plate, negative plate and every
Film, the shape of the positive plate, negative plate and barrier film is rectangle and trapezoidal composite figure, wherein rectangle upper, it is trapezoidal
Under；The trapezoidal upper bottom length is equal to the length of rectangle.
Embodiment 4
As shown in fig. 6, the present embodiment is substantially the same manner as Example 1, difference be the arc by two just to
Equal length and be parallel to each other line segment, be clipped in the middle of two lines section left side and convex camber line and be clipped in two lines section intermediate right to the right
The camber line composition convex to the left of side；Distance most short is the 4/5 of line segment length between two arcs；The battery total thickness
Spend for 0.35mm.
Embodiment 5
As shown in fig. 7, the present embodiment is substantially the same manner as Example 1, difference be the positive plate, negative plate and every
Film, the shape of the positive plate, negative plate and barrier film is isosceles trapezoid；The battery gross thickness is 0.35mm.
Embodiment 6
As shown in figure 8, the present embodiment is substantially the same manner as Example 1, difference be the positive plate, negative plate and every
Film, the shape of the positive plate, negative plate and barrier film is annular；The battery gross thickness is 0.38mm.
Embodiment 7
As shown in figure 9, the present embodiment is substantially the same manner as Example 1, difference be the positive plate, negative plate and every
Film, the shape of the positive plate, negative plate and barrier film is semi-circular；The battery gross thickness is 0.38mm.
Embodiment 8
As shown in Figure 10, some first through hole 2, the base are provided with the middle of a kind of 3D foils, including base material 1, the base material 1
First through hole 2 is surrounded by projection 3, described raised 3 and is integrally formed with base material 1 on material 1；The second through hole is provided with described raised 3
4；The side wall of second through hole 4 is parallel to the side wall of projection 3, and second through hole 4 connects with first through hole 2；Described first leads to
Aperture of the hole 2 away from the end of the second through hole 4 is more than or equal to the aperture of the junction of 2 and second through hole of first through hole 4, the first through hole
2 and the junction of the second through hole 4 aperture be more than the aperture of the second through hole 4 away from the end of first through hole 2.
Projection 3 is interval with above and below the bottom of base material 1 and the surrounding of top first through hole 2.
The aperture of the first through hole 2 is that the gap between 100 μm, two neighboring first through hole 2 is 300 μm.
The width that some regions of first through hole 2 are distributed with is the 90% of substrate width.
The first through hole 2, the second through hole 4 and projection 3 are integrally formed by mechanical stamping.
The base material 1 is aluminium foil, and the length of base material is 800mm, and width is 245mm.
As shown in figure 11, the first through hole 2 is shaped as rectangle；Described raised 3 are shaped as hemisphere；The projection
The angle of top side wall is 60 °.
Raised 3 height is 18 μm；The distance of the side wall of second through hole 4 to raised 3 outer wall is 35 μm.
The arc by two just to equal length and be parallel to each other line segment, be clipped in two lines section in the middle of left side to the right
Convex camber line and the camber line composition convex to the left for being clipped in two lines section right middle；Distance most short is between two arcs
The 1/2 of line segment length；The battery gross thickness is 0.3mm.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of 3D foils, it is characterised in that：Including base material (1), some first through hole (2), institute are provided with the middle of the base material (1)
State first through hole (2) on base material (1) to be surrounded by raised (3), the projection (3) is integrally formed with base material (1)；The projection
(3) the second through hole (4) is provided with；Second through hole (4) the side wall parallel to raised (3) side wall, second through hole (4) with
First through hole (2) is connected；The first through hole (2) is more than or equal to first through hole (2) and the away from the aperture that the second through hole (4) is held
The aperture of the aperture of two through holes (4) junction, the first through hole (2) and the second through hole (4) junction is more than described second and led to
The aperture that hole (4) is held away from first through hole (2).
2. 3D foils according to claim 1, it is characterised in that：Base material (1) the bottom first through hole (2) is surrounded by
Raised (3).
3. 3D foils according to claim 1, it is characterised in that：Base material (1) bottom and top first through hole (2) four
It is interval with above and below week raised (3).
4. the 3D foils according to claims 1 to 3 any one, it is characterised in that：The aperture of the first through hole (2) is
10 μm~200 μm, the gap between two neighboring first through hole (2) is 5 μm~450 μm；It is distributed with the base material (1) some
The width in first through hole (2) region is the 5%~95% of base material (1) width.
5. the 3D foils according to claims 1 to 3 any one, it is characterised in that：The base material (1) is metal foil；
The first through hole (2), the second through hole (4) and raised (3) are integrally formed by mechanical stamping.
6. the 3D foils according to claims 1 to 3 any one, it is characterised in that：The base material (1) be aluminium foil, copper foil,
One kind in nickel foil, iron foil, tinfoil paper；The first through hole (2) is shaped as circle, rectangle, square, triangle, trapezoidal, water chestnut
It is more than one or both of shape, parallelogram, ellipse；The projection (3) is shaped as cylinder, cuboid, square, rib
Composite figure more than one or both of cone, terrace with edge, cone, prism, hemisphere, parallelogram, ellipse；Institute
The angle for stating raised (3) side wall and base material (1) is 5 °~90 °.
7. 3D foils according to claim 6, it is characterised in that：The height of the projection (3) is 3 μm~100 μm；It is described
The distance of the second through hole (4) side wall to raised (3) outer wall is 5 μm~100 μm.
8. a kind of special-shaped thin slice lithium ion battery included just like the 3D foils described in claim 1 to 7 any one, its feature
It is：Including positive plate, negative plate and barrier film, the shape of the positive plate, negative plate and barrier film be arc, it is trapezoidal, annular,
Semi-circular, rectangle and one kind in trapezoidal composite figure.
9. the special-shaped thin slice lithium ion battery according to claim 8 for including 3D foils, it is characterised in that：The arc
Including two just to equal length and the line segment that is parallel to each other and at least one camber line being clipped in two lines section.
10. the special-shaped thin slice lithium ion battery according to claim 8 for including 3D foils, it is characterised in that：The electricity
Pond gross thickness is 0.29mm~0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335629.2U CN206432329U (en) | 2016-12-07 | 2016-12-07 | 3D foils and the special-shaped thin slice lithium ion battery for including the 3D foils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621335629.2U CN206432329U (en) | 2016-12-07 | 2016-12-07 | 3D foils and the special-shaped thin slice lithium ion battery for including the 3D foils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206432329U true CN206432329U (en) | 2017-08-22 |
Family
ID=59587351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621335629.2U Expired - Fee Related CN206432329U (en) | 2016-12-07 | 2016-12-07 | 3D foils and the special-shaped thin slice lithium ion battery for including the 3D foils |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206432329U (en) |
-
2016
- 2016-12-07 CN CN201621335629.2U patent/CN206432329U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170822 Termination date: 20211207 |