CN106654348A - Lithium battery - Google Patents
Lithium battery Download PDFInfo
- Publication number
- CN106654348A CN106654348A CN201710089780.5A CN201710089780A CN106654348A CN 106654348 A CN106654348 A CN 106654348A CN 201710089780 A CN201710089780 A CN 201710089780A CN 106654348 A CN106654348 A CN 106654348A
- Authority
- CN
- China
- Prior art keywords
- coiled material
- insulating tape
- end edge
- pole coiled
- barrier film
- 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.)
- Granted
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Primary Cells (AREA)
Abstract
The invention relates to a lithium battery. The lithium battery comprises a battery shell, wherein the battery shell is internally provided with a cell coiled material; the cell coiled material comprises a positive electrode coiled material, a negative electrode coiled material and a membrane; the membrane is arranged between the positive electrode coiled material and the negative electrode coiled material; an upper insulated rubber tape is connected between the upper end of the positive electrode coiled material and the upper end of the membrane, and the upper insulated rubber tape is used for connecting the upper end edge of the positive electrode coiled material with the upper end edge of the membrane together; a lower insulated rubber tape is connected between the lower end of the negative electrode coiled material and the lower end of the membrane, and the lower insulated rubber tape is used for connecting the upper end edge of the positive electrode coiled material with the lower end edge of the membrane together; and the insulated rubber tapes are made of a thermoplastic elastomer (TPE). The upper end edge and the lower end edge of the membrane are fixed, so that the positive pole coiled material and the negative pole coiled material are prevented from being contacted to cause a short circuit, and the using safety of the battery is guaranteed.
Description
Technical field
The present invention relates to a kind of lithium battery.
Background technology
Lithium battery is currently used widely, and the main problem that traditional lithium battery is present is exactly that easily open circuit occurs open circuit
Blast, the battery roll core in lithium battery mainly includes both positive and negative polarity coiled material and the barrier film being clipped between two coiled materials, when in core
Upper and lower ends, barrier film is not fixed, and as cell degradation, open circuit, electric current are unstable, the end edge up and down of barrier film is shunk,
So that the contact of end edge up and down of both positive and negative polarity coiled material occurs open circuit, battery explosion is caused.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided a kind of lithium battery, solve electricity in the past
Pond septation upper and lower side easily shrinks aging defect.
The technical solution adopted for the present invention to solve the technical problems is：A kind of lithium battery, including battery container, the electricity
Battery core coiled material is set in the housing of pond, and the battery core coiled material includes positive pole coiled material, negative pole coiled material and barrier film, and the barrier film is arranged on
Between positive pole coiled material and negative pole coiled material；
Connect upper insulating tape between the positive pole coiled material upper end and the upper end of barrier film, the upper insulating tape is by positive pole coiled material
The upper end edge of upper end edge and barrier film links together；Lower insulating cement is connected between the negative pole coiled material lower end and barrier film lower end
Band, the lower insulating tape links together the lower end edge of the upper end edge of positive pole coiled material and barrier film；
The material of the insulating tape is thermoplastic elastomer (TPE) TPE.
Further, the upper end edge of the positive pole coiled material and lower end form respectively Guang Bo areas, the positive pole coiled material upper end light
The end face outside in paper tinsel area forms first step groove, and the inner side end in the Guang Bo areas of end edge forms second step under the positive pole coiled material
Groove；
The upper end edge of the negative pole coiled material and lower end form respectively Guang Bo areas, the end face outside in the negative pole coiled material upper end Guang Bo areas
The 3rd step groove is formed, the inner side end in the Guang Bo areas of end edge forms the 4th step groove under the negative pole coiled material；
When positive pole coiled material, negative pole coiled material and membrane winding are in battery core coiled material, one end of the upper insulating tape is located at first
In step groove, the other end of the upper insulating tape is located in the 3rd step groove；One end of the lower insulating tape is located at second
In step groove, the other end of the lower insulating tape is located in the 4th step groove.
Further, the thickness of the insulating tape is 2-50 μm.
Further, described insulating tape includes thermoplastic elastomer and adhesive layer, the thickness of the elastomer layer
Spend for 1-40 μm.
The invention has the beneficial effects as follows：The end edge up and down of barrier film is fixed, prevents both positive and negative polarity cylinder contacts from occurring short
Road, it is ensured that the safe handling of battery.
Insulating tape adopts thermoplastic elastomer (TPE) material, when battery core is under 100 DEG C or more than 100 DEG C of hot conditions
When, can start to soften, melt, with obvious viscosity.The insulating tape being attached on both positive and negative polarity coiled material can be bonded at pole piece and barrier film
Together, diaphragm retracts are played with certain inhibitory action, with higher security performance.
Because insulating tape has good elasticity, when battery falls, clashes into, insulating tape can pass through deformation
Cushioning effect is played, and partially absorbs the energy of shock.
The setting of each step groove, can be such that true negative pole coiled material remains in that after insulating tape in connection smooth.
Description of the drawings
Below in conjunction with the accompanying drawings the present invention is further described.
Fig. 1 is the schematic diagram of battery core coiled material in lithium battery；
Wherein, 1, positive pole coiled material, 2, negative pole coiled material, 3, barrier film, 4, upper insulating tape.5th, lower insulating tape.
Specific embodiment
Presently in connection with accompanying drawing, the present invention is further illustrated.These accompanying drawings are simplified schematic diagram only with signal side
The basic structure of the formula explanation present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of lithium battery, including battery container, battery core coiled material is set in battery container, battery core coiled material includes
Positive pole coiled material 1, negative pole coiled material 2 and barrier film 3, barrier film 3 is arranged between positive pole coiled material 1 and negative pole coiled material 2；On positive pole coiled material 1
The upper insulating tape 4 of connection between end and the upper end of barrier film 3, upper insulating tape 4 is upper by the upper end edge of positive pole coiled material 1 and barrier film 3
End edge links together；Lower insulating tape 5 is connected between the lower end of negative pole coiled material 2 and the lower end of barrier film 3, lower insulating tape 5 will just
The upper end edge of pole coiled material 1 and the lower end edge of barrier film 3 link together；The material of insulating tape is thermoplastic elastomer (TPE) TPE.
The upper end edge of positive pole coiled material 1 and lower end form respectively Guang Bo areas, the end face outside shape in the upper end Guang Bo areas of positive pole coiled material 1
Into first step groove, the inner side end in the Guang Bo areas of 1 time end edge of positive pole coiled material forms second step groove；The upper end of negative pole coiled material 2
Side and lower end form respectively Guang Bo areas, and the end face outside in the upper end Guang Bo areas of negative pole coiled material 2 forms the 3rd step groove, negative pole coiled material 2
The inner side end in the Guang Bo areas of lower end edge forms the 4th step groove；When positive pole coiled material 1, negative pole coiled material 2 and barrier film 3 winding is in electricity
During core coiled material, one end of upper insulating tape 4 is located in first step groove, and the other end of upper insulating tape 4 is located at the 3rd step groove
It is interior；One end of lower insulating tape 5 is located in second step groove, and the other end of lower insulating tape 5 is located in the 4th step groove.
The thickness of insulating tape is 2-50 μm.Insulating tape includes thermoplastic elastomer and adhesive layer, elastomer layer
Thickness be 1-40 μm.
The lithium battery of the present invention, is fixed by the end edge up and down to barrier film 3, prevents the contact of both positive and negative polarity coiled material 2 from occurring
Short circuit, it is ensured that the safe handling of battery.Insulating tape adopt thermoplastic elastomer (TPE) material, when battery core in 100 DEG C or 100 DEG C with
On hot conditions under when, can start to soften, melt, with obvious viscosity.Being attached to insulating tape on both positive and negative polarity coiled material 2 can be by
Pole piece and barrier film 3 stick together, and barrier film 3 is shunk and plays certain inhibitory action, with higher security performance.
Because insulating tape has good elasticity, when battery falls, clashes into, insulating tape can pass through deformation
Cushioning effect is played, and partially absorbs the energy of shock.The setting of each step groove, can make true negative pole coiled material 2 in connection
Remain in that after insulating tape 4 smooth.
With the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Entirely various change and modification can be carried out in the range of without departing from this invention technological thought.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. a kind of lithium battery, is characterized in that, including battery container, and battery core coiled material, the core coil are arranged in the battery container
Material includes positive pole coiled material（1）, negative pole coiled material（2）And barrier film（3）, the barrier film（3）It is arranged on positive pole coiled material（1）With negative pole volume
Material（2）Between；
The positive pole coiled material（1）Upper end and barrier film（3）Upper end between the upper insulating tape of connection（4）, the upper insulating tape（4）
By positive pole coiled material（1）Upper end edge and barrier film（3）Upper end edge link together；The negative pole coiled material（2）Lower end and barrier film（3）
Lower insulating tape is connected between lower end（5）, the lower insulating tape（5）By positive pole coiled material（1）Upper end edge and barrier film（3）'s
Lower end edge links together；
The material of the insulating tape is thermoplastic elastomer (TPE) TPE.
2. lithium battery according to claim 1, is characterized in that, the positive pole coiled material（1）Upper end edge and lower end difference shape
Into Guang Bo areas, the positive pole coiled material（1）The end face outside in upper end Guang Bo areas forms first step groove, the positive pole coiled material（1）Under
The inner side end in the Guang Bo areas of end edge forms second step groove；
The negative pole coiled material（2）Upper end edge and lower end form Guang Bo areas, the negative pole coiled material respectively（2）Outside the Guang Bo areas of upper end
Side end face forms the 3rd step groove, the negative pole coiled material（2）The inner side end in the Guang Bo areas of lower end edge forms the 4th step groove；
When positive pole coiled material（1）, negative pole coiled material（2）And barrier film（3）When winding is in battery core coiled material, the upper insulating tape（4）'s
One end is located in first step groove, the upper insulating tape（4）The other end be located at the 3rd step groove in；The lower insulating tape
（5）One end be located at second step groove in, the lower insulating tape（5）The other end be located at the 4th step groove in.
3. lithium battery according to claim 1, is characterized in that, the thickness of the insulating tape is 2-50 μm.
4. lithium battery according to claim 1, is characterized in that, described insulating tape includes thermoplastic elastomer and glues
Knot oxidant layer, the thickness of the elastomer layer is 1-40 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089780.5A CN106654348B (en) | 2017-02-20 | 2017-02-20 | Lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710089780.5A CN106654348B (en) | 2017-02-20 | 2017-02-20 | Lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106654348A true CN106654348A (en) | 2017-05-10 |
| CN106654348B CN106654348B (en) | 2023-05-30 |
Family
ID=58845532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710089780.5A Active CN106654348B (en) | 2017-02-20 | 2017-02-20 | Lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106654348B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193025A (en) * | 2018-10-12 | 2019-01-11 | 桑顿新能源科技有限公司 | A kind of lithium ion battery and its manufacturing method with high security pole piece |
| CN110212250A (en) * | 2019-06-01 | 2019-09-06 | 珠海冠宇电池有限公司 | A kind of lithium battery electric core |
| WO2021047505A1 (en) * | 2019-09-12 | 2021-03-18 | 比亚迪股份有限公司 | Battery separator, battery, and battery pack |
| WO2022042303A1 (en) * | 2020-08-31 | 2022-03-03 | 珠海冠宇电池股份有限公司 | Lithium ion cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154144A (en) * | 1997-07-31 | 1999-02-26 | Matsushita Electric Ind Co Ltd | Square battery and manufacture therefor |
| JP2003168411A (en) * | 2001-12-04 | 2003-06-13 | Hitachi Maxell Ltd | Nonaqueous secondary battery |
| EP2136429A1 (en) * | 2008-06-20 | 2009-12-23 | Samsung SDI Co., Ltd. | Electrode assembly and lithium secondary battery with same |
| CN101867070A (en) * | 2009-04-15 | 2010-10-20 | 比亚迪股份有限公司 | Lithium ion battery and preparation method thereof |
| CN206461043U (en) * | 2017-02-20 | 2017-09-01 | 南通耐维特电源有限公司 | Lithium battery |
-
2017
- 2017-02-20 CN CN201710089780.5A patent/CN106654348B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1154144A (en) * | 1997-07-31 | 1999-02-26 | Matsushita Electric Ind Co Ltd | Square battery and manufacture therefor |
| JP2003168411A (en) * | 2001-12-04 | 2003-06-13 | Hitachi Maxell Ltd | Nonaqueous secondary battery |
| EP2136429A1 (en) * | 2008-06-20 | 2009-12-23 | Samsung SDI Co., Ltd. | Electrode assembly and lithium secondary battery with same |
| CN101867070A (en) * | 2009-04-15 | 2010-10-20 | 比亚迪股份有限公司 | Lithium ion battery and preparation method thereof |
| CN206461043U (en) * | 2017-02-20 | 2017-09-01 | 南通耐维特电源有限公司 | Lithium battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193025A (en) * | 2018-10-12 | 2019-01-11 | 桑顿新能源科技有限公司 | A kind of lithium ion battery and its manufacturing method with high security pole piece |
| CN110212250A (en) * | 2019-06-01 | 2019-09-06 | 珠海冠宇电池有限公司 | A kind of lithium battery electric core |
| WO2021047505A1 (en) * | 2019-09-12 | 2021-03-18 | 比亚迪股份有限公司 | Battery separator, battery, and battery pack |
| WO2022042303A1 (en) * | 2020-08-31 | 2022-03-03 | 珠海冠宇电池股份有限公司 | Lithium ion cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106654348B (en) | 2023-05-30 |
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