CN205944301U - Electricity core structure and buckle formula secondary lithium ion battery - Google Patents
Electricity core structure and buckle formula secondary lithium ion battery Download PDFInfo
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- CN205944301U CN205944301U CN201620917219.2U CN201620917219U CN205944301U CN 205944301 U CN205944301 U CN 205944301U CN 201620917219 U CN201620917219 U CN 201620917219U CN 205944301 U CN205944301 U CN 205944301U
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- pole piece
- core strueture
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- 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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- 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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Abstract
The utility model discloses an electricity core structure and buckle formula secondary lithium ion battery, electricity core structure is including crisscross superimposed at least one first pole piece and two at least compound pole pieces, compound pole piece includes that the heat seal forms integrative second pole piece and diaphragm, wherein, diaphragm heat seal cladding is in the outside of second pole piece. The utility model discloses an electric core structure through with diaphragm and the compound pole piece that the pole piece thermosynthesis is integrative, forms electric core structure with another kind of pole piece coincide again, and the convenience is assembled, improves the shell space utilization ratio of battery, still provides the volume capacity density of battery for it is excellent that the battery has big current discharge performance, and cycle life is long, the utility model discloses an electricity core structure preparation simple process, the production degree of difficulty is low, is fit for the large -scale industry metaplasia and produces.
Description
Technical field
This utility model is related to cell art, more particularly, to a kind of core strueture and the button using this core strueture
Secondary lithium battery.
Background technology
Button secondary lithium battery is mainly used in miniaturized electronic product, is widely used as in portable electron device
Power supply.This kind of battery battery core structure is broadly divided into takeup type structure and accordion structure at present, and takeup type structural advantages are batteries
Consistency of performance is good, but volume capacity density is low, low space utilization in shell.Accordion structure is inclined with respect to takeup type capacity
Height, space availability ratio is preferable, but processing procedure is more difficult, and technique is complex, is unfavorable for high-volume commercial production.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of raising battery volume capacity density, and preparation is simple
Core strueture and using this core strueture button secondary lithium battery.
This utility model solves its technical problem and be employed technical scheme comprise that：There is provided a kind of core strueture, for button
Secondary lithium battery, described core strueture includes at least one first pole piece and at least two composite pole of staggered overlapping
Piece；Described composite pole piece includes heat seal shape all-in-one-piece the second pole piece and barrier film；Wherein, described barrier film heat seal is coated on described
The outside of two pole pieces.
Preferably, described core strueture also includes protruding the first lug being connected on described first pole piece, protrudes connection
The second lug on described composite pole piece；Described first lug and the second lug are towards not homonymy.
Preferably, described core strueture includes multiple described first pole pieces and multiple described composite pole piece, and described first
Pole piece and composite pole piece staggered overlapping successively；
Described first lug on multiple described first pole pieces overlaps point-blank, on multiple described composite pole pieces
Described second lug overlaps point-blank.
Preferably, in described core strueture, on overlapping direction, the pole piece of two opposite outer is composite pole piece.
Preferably, described first pole piece is positive plate, and described second pole piece is negative plate.
Preferably, described first pole piece is circular pole piece；Described composite pole piece is circular pole piece.
Preferably, the peripheral dimension of described composite pole piece is more than the peripheral dimension of described first pole piece.
This utility model also provides a kind of button secondary lithium battery, including described in battery container, any of the above item
Core strueture；Described core strueture is arranged in described battery container and is conductively connected with described battery container.
Preferably, the shape of the corresponding described core strueture of the shape of described battery container.
Preferably, described button secondary lithium battery also includes the first conductive metal band and the second conductive metal band；
One end of described first conductive metal band is connected on the first lug of described core strueture, and the other end is connected to institute
State inside battery container；One end of described second conductive metal band is connected on the second lug of described core strueture, the other end
It is connected to inside described battery container.
Core strueture of the present utility model, by by barrier film and a kind of pole piece heat seal all-in-one-piece composite pole piece, then with separately
A kind of pole piece is built up core strueture, ease of assembly, improves the shell space utilization rate of battery, also provides the volume of battery to hold
Metric density so that battery to have a heavy-current discharge performance excellent, have extended cycle life, core strueture processing technology of the present utility model
Simply, production difficulty is low, suitable large-scale industrial production.
Brief description
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of the core strueture of this utility model one embodiment；
Fig. 2 is the heat seal process schematic of composite pole piece in Fig. 1.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing is detailed
Specific embodiment of the present utility model is described.
As shown in Figure 1, 2, the core strueture of this utility model one embodiment, can be used for button secondary lithium battery.Should
Core strueture includes at least one first pole piece 10 and at least two composite pole pieces 20 of staggered overlapping.
Wherein, composite pole piece 20 includes heat seal shape all-in-one-piece the second pole piece 21 and barrier film 22.Barrier film 22 heat seal is coated on
The outside of the second pole piece 21, thus the Outboard Sections of composite pole piece 20 are membrane portions.
Composite pole piece 20 in the preparation, can be placed on the opposite sides of the second pole piece 21, be placed on using two barrier films 22
In heat-seal mould, by high temperature, barrier film 22 melting is coated on the periphery of the second pole piece 21, forms composite pole piece 20.
Barrier film 22 is sized slightly larger than the size of the second pole piece 21, thus can completely the second pole piece 21 be coated in it.
In core strueture, on overlapping direction, the pole piece of two opposite outer is composite pole piece 20.
Further, core strueture also includes protruding the first lug 11 being connected on the first pole piece 10, protrudes and be connected to
The second lug 23 on composite pole piece 20.First lug 11 and the second lug 23 are towards not homonymy.Preferably, the second lug 23 exists
Make and be formed at during the second pole piece 21 on second pole piece 21.First lug 11 and the second lug 23 can be by conductive metal band and electricity
Pond housing conductive connects.
As shown in figure 1, in the present embodiment, core strueture includes multiple first pole pieces 10 and multiple composite pole piece 20, the
One pole piece 10 and composite pole piece 20 staggered overlapping successively.The first lug 11 on multiple first pole pieces 10 is superimposed on straight line
On, the second lug 23 on multiple composite pole pieces 20 overlaps point-blank.
In view of the correlated performance of battery, the first pole piece 10 is positive plate, and the second pole piece 21 in composite pole piece 20 is negative
Pole piece.
The peripheral dimension of composite pole piece 20 is slightly larger than the peripheral dimension of the first pole piece 10, can cover the first pole piece 10.Enter
Preferably, the first pole piece 10 is circle to one step, and composite pole piece 20 is also circle.
It is to be appreciated that the first pole piece 10 and composite pole piece 20 are alternatively the other shapes such as polygon or ellipse.
Core strueture of the present utility model may also include the first conductive metal band (not shown) and the second conductive metal band (not
Diagram), connect the first lug 11 of overlapping and the second lug 23 of overlapping respectively, for being connected with battery container in the battery,
Conduct electricity very well, internal resistance is low.
The preparation method of core strueture of the present utility model, with reference to Fig. 1, it comprises the following steps：
S1, preparation the first pole piece 10 and composite pole piece 20.
Wherein, as shown in Fig. 2 composite pole piece 20 includes heat seal shape all-in-one-piece the second pole piece 21 and barrier film 22, barrier film 22
Heat seal is coated on the outside of the second pole piece 21.
The preparation method of this composite pole piece can be as follows：
Second pole piece 21 is placed between two barrier films 22, makes the second pole piece 21 and barrier film 22 form one by heat seal
Body.Bonding operation can be carried out in heat-seal mould, and by high temperature, barrier film 22 melting is coated on the periphery of the second pole piece 21, shape
Become composite pole piece 20.
Barrier film 22 is sized slightly larger than the size of the second pole piece 21, thus can completely the second pole piece 21 be coated in it.
In view of the correlated performance of battery, the first pole piece 10 is preferably positive plate, the second pole piece 21 in composite pole piece 20
For negative plate.
The peripheral dimension of composite pole piece 20 is slightly larger than the peripheral dimension of the first pole piece 10, can cover the first pole piece 10.
It is further preferred that the first pole piece 10 is circle, composite pole piece 20 is also circle.
It is to be appreciated that the first pole piece 10 and composite pole piece 20 are alternatively the other shapes such as polygon or ellipse.
S2, overlapping that the first pole piece 10 and composite pole piece 20 interlock, form core strueture.
In step S2, by the first lug 11 on the first pole piece 10 towards side, the second lug 23 on composite pole piece 20
Overlapped towards opposite side.
In core strueture, on overlapping direction, the pole piece of two opposite outer is composite pole piece 20.Multiple first lugs
Point-blank, multiple second lugs 23 overlap point-blank 11 overlappings.
In addition, the preparation method of core strueture of the present utility model, may also include S3, by the first conductive metal band and second
Conductive metal band, is respectively welded on the first lug 11 and the second lug 23；First conductive metal band and the second conductive metal band
For being connected with battery container in the battery.For the first lug 11 of multiple overlappings, one end of the first conductive metal band connects
Multiple first lugs 11 of overlapping；In the same manner, one end of the second conductive metal band connects multiple second lugs 23 of overlapping.
The button secondary lithium battery of this utility model one embodiment, including battery container (not shown), the above
Core strueture (as shown in Figure 1).Core strueture is arranged in battery container and is conductively connected with battery container.
Button secondary lithium battery also includes the first conductive metal band (not shown) and the second conductive metal band (is not schemed
Show)；One end of first conductive metal band is connected on first lug (as shown in Figure 1) of core strueture, and the other end is connected to electricity
Pond case inside；One end of second conductive metal band is connected on the second lug 23 (as shown in Figure 1) of core strueture, the other end
It is connected to inside battery container, thus core strueture is led with battery container by the first conductive metal band and the second conductive metal band
Electrical connection, conducts electricity very well, internal resistance is low.
The shape preferred pair of battery container answers the global shape of core strueture to arrange.For example, the core strueture shown in Fig. 1 is big
Cause cylindrical, battery container corresponds to the cylindrical shell of hollow.
In summary, core strueture of the present utility model, processing technology is simple, and production difficulty is low, suitable large-scale industry
Metaplasia is produced.Core strueture of the present utility model is applied to can improve the space of battery container in button secondary lithium battery
Utilization rate, improves battery volume capacity density so that battery has heavy-current discharge performance, has extended cycle life.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are all included in the same manner in scope of patent protection of the present utility model.
Claims (10)
1. a kind of core strueture, for button secondary lithium battery it is characterised in that described core strueture includes staggered overlapping
At least one first pole piece and at least two composite pole pieces；Described composite pole piece includes heat seal shape all-in-one-piece the second pole piece
And barrier film；Wherein, described barrier film heat seal is coated on the outside of described second pole piece.
2. core strueture according to claim 1 it is characterised in that described core strueture also include protrusion be connected to described
The first lug on first pole piece, protrusion are connected to the second lug on described composite pole piece；Described first lug and the second pole
Ear is towards not homonymy.
3. core strueture according to claim 2 is it is characterised in that described core strueture includes multiple described first pole pieces
And multiple described composite pole piece, described first pole piece and composite pole piece interlock overlapping successively；
Described first lug on multiple described first pole pieces overlaps point-blank, described on multiple described composite pole pieces
Second lug overlaps point-blank.
4. the core strueture according to any one of claim 1-3 is it is characterised in that in described core strueture, positioned at overlapping
On direction, the pole piece of two opposite outer is composite pole piece.
5. the core strueture according to any one of claim 1-3 it is characterised in that described first pole piece be positive plate, institute
Stating the second pole piece is negative plate.
6. the core strueture according to any one of claim 1-3 is it is characterised in that described first pole piece is circular pole piece；
Described composite pole piece is circular pole piece.
7. the core strueture according to any one of claim 1-3 is it is characterised in that the peripheral dimension of described composite pole piece is big
Peripheral dimension in described first pole piece.
8. a kind of button secondary lithium battery is it is characterised in that include described in battery container, any one of claim 1-7
Core strueture；Described core strueture is arranged in described battery container and is conductively connected with described battery container.
9. button secondary lithium battery according to claim 8 is it is characterised in that the shape of described battery container corresponds to
The shape of described core strueture.
10. button secondary lithium battery according to claim 8 is it is characterised in that described button secondary lithium-ion is electric
Pond also includes the first conductive metal band and the second conductive metal band；
One end of described first conductive metal band is connected on the first lug of described core strueture, and the other end is connected to described electricity
Pond case inside；One end of described second conductive metal band is connected on the second lug of described core strueture, and the other end connects
Inside described battery container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620917219.2U CN205944301U (en) | 2016-08-22 | 2016-08-22 | Electricity core structure and buckle formula secondary lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620917219.2U CN205944301U (en) | 2016-08-22 | 2016-08-22 | Electricity core structure and buckle formula secondary lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN205944301U true CN205944301U (en) | 2017-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620917219.2U Active CN205944301U (en) | 2016-08-22 | 2016-08-22 | Electricity core structure and buckle formula secondary lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN205944301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129479A (en) * | 2016-08-22 | 2016-11-16 | 深圳拓邦新能源技术有限公司 | Core strueture and preparation method thereof, button secondary lithium battery |
-
2016
- 2016-08-22 CN CN201620917219.2U patent/CN205944301U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129479A (en) * | 2016-08-22 | 2016-11-16 | 深圳拓邦新能源技术有限公司 | Core strueture and preparation method thereof, button secondary lithium battery |
| WO2018036326A1 (en) * | 2016-08-22 | 2018-03-01 | 深圳拓邦新能源技术有限公司 | Battery cell structure and preparation method therefor, and button-type secondary lithium-ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 east side of the 4th floor of Tuobang Industrial Park, Liyuan Industrial Park, Langxin community, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN TOPBAND BATTERY Co.,Ltd. Address before: 518000 floor 4, plant 2, Tuobang Industrial Park, Liyuan Industrial Zone, Langxin community, Shiyan street, Bao'an District, Shenzhen, Guangdong Province Patentee before: SHENZHEN TOPBAND NEW ENERGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |