CN206432317U - Battery core and battery - Google Patents
Battery core and battery Download PDFInfo
- Publication number
- CN206432317U CN206432317U CN201720146853.5U CN201720146853U CN206432317U CN 206432317 U CN206432317 U CN 206432317U CN 201720146853 U CN201720146853 U CN 201720146853U CN 206432317 U CN206432317 U CN 206432317U
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- Prior art keywords
- battery core
- lug
- insulating barrier
- main body
- 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 application is related to electric power-feeding structure technical field, more particularly to a kind of battery core and battery, the battery core includes battery core main body and lug, the lug is bending structure, and the lug includes lug body and the insulating barrier being arranged on the lug body, the insulating barrier separates between the lug body and the battery core main body for insulation.Battery core provided herein sets insulating barrier on lug body, after lug is bent, the insulating barrier, which can insulate, to be separated between the lug body and the battery core main body, and then prevents lug from directly being contacted with battery core main body so that inside battery is not easily formed internal short-circuit.Therefore, the battery core can improve the security of battery.
Description
Technical field
The application is related to electric power-feeding structure technical field, more particularly to a kind of battery core and battery.
Background technology
With the continuous increase of energy demand, the application of battery is also more and more wider.Battery core is important in battery
One of part, in order to lift the energy density of battery, the design method of limit top cover is usually used at present, after being arranged such,
Ceiling hold can just be cancelled, and then increase the inner space utilization rate of battery core, energy density is lifted., it is necessary to right in such a scheme
Lug implements bending operation.
However, because ceiling hold is cancelled, after lug is bent, easily with battery core body contacts, causing inside battery shape
Into the phenomenon of internal short-circuit.So, there is larger potential threat in the security of such a battery.
Utility model content
This application provides a kind of battery core and battery, the battery core can improve the security of battery.
The first aspect of the application provides a kind of battery core, and it includes battery core main body and lug, and the lug is bending knot
Structure, and the lug includes lug body and the insulating barrier that is arranged on the lug body, the insulating barrier be used to insulating every
Break between the lug body and the battery core main body.
Preferably, the insulating barrier is adhered on the lug body.
Preferably, the insulating barrier is insulation coat.
Preferably, the thickness of insulating layer is 2~10 μm.
Preferably, along the length direction of the battery core, the side of the insulating barrier from the lug body extends to institute
State the opposite side of lug body.
Preferably, the battery core main body includes the first collector and the active material being arranged on first collector is applied
Coating, the insulating barrier is connected with the active material coat.
Preferably, the lug body includes having clear area and insulating barrier on the second collector, second collector
Coating area, the insulating barrier is arranged on the insulating barrier coating area, and the width of the clear area is more than or equal to the insulation
The width of layer coating area, the width is the size in the short transverse of the battery core.
Preferably, the insulating barrier includes the first insulating segment and the second insulating segment, and first insulating segment is located at the electricity
Between core main body and second insulating segment, the side away from the battery core main body is along away from described on second insulating segment
The direction of battery core main body extends to the bending place of the lug, and in side of the bending place away from the battery core main body.
Preferably, the insulating barrier is polyvinylidene fluoride layer.
The second aspect of the application provides a kind of battery, and it includes shell, battery core and pole, and the battery core is above-mentioned
Battery core described in one, the lug is electrically connected between the battery core main body and the pole.
The technical scheme that the application is provided can reach following beneficial effect：
Battery core provided herein sets insulating barrier on lug body, after lug is bent, and the insulating barrier can be with
Insulation separates between the lug body and the battery core main body, and then prevents lug from directly being contacted with battery core main body so that
Inside battery is not easily formed internal short-circuit.Therefore, the battery core can improve the security of battery.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Application.
Brief description of the drawings
Battery core and the assembling schematic diagram of pole that Fig. 1 is provided by the embodiment of the present application；
Structural representation before the battery core cross cutting that Fig. 2 is provided by the embodiment of the present application；
Structural representation after the battery core cross cutting that Fig. 3 is provided by the embodiment of the present application.
Reference：
10- battery core main bodys；
100- active material coats；
11- lugs；
110- lug bodies；
The collectors of 110a- second；
111- insulating barriers；
12- poles.
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
Embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing.
As Figure 1-3, the embodiment of the present application provides a kind of battery core, and the battery core includes battery core main body 10 and lug 11,
The lug 11 can form bending structure by bending operation, and the battery core can cancel ceiling hold, and then improve battery
Energy density.The lug 11 can be positive pole ear or negative lug, and it may include lug body 110 and is arranged at lug sheet
Insulating barrier 111 on body 110.The insulating barrier 111 separates between lug body 110 and battery core main body 10 for insulation.Herein
Battery core main body 10 can include the first collector and active material coat 100, active material coat 100 be arranged at first
On collector, and lug body 110 can generally include the second collector 110a, and the second collector 110a and the first collector
Integral structure can be formed, such as, by implementing die cut operation to complete collector, forms foregoing lug 11.
Specifically, insulating barrier 111 can be arranged on lug body 110 by way of bonding, therefore between the two may be used
To set bond layer (not shown), it can both be ensured between insulating barrier 111 and lug body 110 by the way of bonding
Bond strength, the set-up mode of insulating barrier 111 can also be simplified.The insulating barrier 111 can be added by the way of coating
Work, therefore the insulating barrier 111 can be preferably insulation coat.
During using above-mentioned battery core, after lug 11 is bent, the insulating barrier 111 of lug 11, which can insulate, to be separated in lug sheet
Between body 110 and battery core main body 10, that is to say, that battery core main body 10 can directly be contacted with insulating barrier 111, and be not easy and pole
Ear body 110 is directly contacted so that inside battery is not easily formed internal short-circuit.Therefore, the battery core can improve the safety of battery
Property.
The area occupied for above-mentioned insulating barrier 111 on lug body 110, can flexibly be set according to actual conditions,
Insulating barrier 111 is for example only set on a part of region of lug body 110.In order to be more reliably prevented from inside battery appearance
Short-circuit the problem of, the embodiment of the present application uses following set-up mode：Along the length direction of battery core, insulating barrier 111 is from lug sheet
The side of body 110 extends to the opposite side of lug body 110.The length direction of battery core refers to lug 11 and battery core main body 10
The bearing of trend of junction, after lug 11 is bent, is formed relatively on lug body 110 close to the side of battery core main body 10
Gentle These strip-shaped sections, and insulating barrier 111 can be arranged along the bearing of trend of the These strip-shaped sections so that insulating barrier 111 is in pole
Area coverage on ear body 110 increased, and then reach object defined above.
In addition, in view of previously mentioned, after lug 11 is bent, the close side of battery core main body 10 is formed on lug body 110
Relatively gentle These strip-shaped sections, and the These strip-shaped sections typically appear as rectangular configuration, therefore insulating barrier 111 can be set
For rectangular dielectric layer, lug body 110 is more fully covered with this.Meanwhile, such a set-up mode can also simplify insulating barrier 111
Processing technology, reduce battery core processing cost.
It is to be appreciated that above-mentioned insulating barrier 111 and the active material coat 100 of battery core main body 10 can be not in contact with each other,
But in order to lift the insulating properties of insulating barrier 111, insulating barrier 111 can be connected together with active material coat 100, made
Obtain and gap is not present between the two.What is more important, such a set-up mode can be by active material coat 100 to insulation
Layer 111 applies active force so that insulating barrier 111 is not easy to separate with lug body 110, further enhances the knot of insulating barrier 111
Structure intensity.
There is clear area and insulating barrier coating area, insulating barrier 111 is arranged at this insulating barrier on above-mentioned second collector 110a
On coating area, and any structure is then not provided with clear area, and width of the width more than or equal to insulating barrier coating area of clear area
Degree, width herein is the size in the short transverse of battery core.After the bending of lug 11, thereon easily with battery core main body 10
The area of the part of contact is relatively small, therefore using after foregoing set-up mode, can both ensure that insulating barrier 111 can be reliably
Realize the insulation between battery core main body 10 and lug body 110, it can also be ensured that clear area has sufficiently large area, is protected with this
Demonstrate,prove the connection between lug 11 and the pole 12 of battery.
In preferred embodiment, insulating barrier 111 can specifically include the first insulating segment and the second insulating segment, the first insulation section
Between the insulating segment of battery core main body 10 and second, the side away from battery core main body 10 on the second insulating segment is along away from battery core main body
10 direction extends to the bending place of lug 11, and in side of the bending place away from battery core main body 10.That is, insulating barrier 111
Width compares larger, its second insulating segment is in most cases almost prevented lug body 110 and battery core main body
10 situations about directly contacting occur, and insulation effect is lifted with this.
The function of above-mentioned insulating barrier 111 is to realize the insulation between battery core main body 10 and lug body 110, therefore in selection
During the manufacture material of insulating barrier 111, the main insulating properties for considering insulating materials., can be by the insulating barrier 111 in a kind of embodiment
Manufacture material be set to PVDF (Poly (vinylidene fluoride), Kynoar), therefore the insulating barrier 111 can
Think polyvinylidene fluoride layer.PVDF refers mainly to vinylidene fluoride homopolymer or vinylidene and other a small amount of fluorine-containing vinyl monomers
Copolymer, it has the characteristic of fluororesin and resins for universal use concurrently, except with good chemical resistance, heat-resisting quantity, oxytolerant
Outside the property changed, weatherability, the radiance of resistance to ray, also with properties such as piezoelectricity, dielectricity, pyroelectricities.Prepare this poly- inclined
During PVF layer, the PVDF of certain mass can be dissolved in NMP (N-Methyl pyrrolidone, N- methylpyrroles first
Alkanone) in solution, stir, solid content is prepared for 5%-10%, and viscosity is 2000-4000mpas solution.Then
Above-mentioned solution is coated on the certain area on the second collector using devices such as coating machines, can now reserve needs mould
The region cut.After oven drying, the coating thickness of insulating barrier 111 can be controlled in the range of 50-100um.
Certainly, above-mentioned PVDF solution can also be replaced with similar solution, and such as PE (polyethylene, polyethylene) is molten
Liquid.
The thickness of insulating barrier 111 can be preferably 2~10 μm.
Based on said structure, the embodiment of the present application also provides a kind of battery, and the battery can include shell, battery core and pole
12, the battery core is the battery core described in any of the above-described embodiment, and the lug 11 of the battery core is electrically connected to battery core main body 10 and pole 12
Between.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of battery core, it is characterised in that including battery core main body and lug, the lug is bending structure, and the lug bag
Lug body and the insulating barrier being arranged on the lug body are included, the insulating barrier separates in the lug body for insulation
Between the battery core main body.
2. battery core according to claim 1, it is characterised in that the insulating barrier is adhered on the lug body.
3. battery core according to claim 1, it is characterised in that the insulating barrier is insulation coat.
4. battery core according to claim 1, it is characterised in that the thickness of insulating layer is 2~10 μm.
5. battery core according to claim 1, it is characterised in that along the length direction of the battery core, the insulating barrier is certainly
The side of the lug body extends to the opposite side of the lug body.
6. battery core according to claim 1, it is characterised in that the battery core main body includes the first collector and is arranged at institute
The active material coat on the first collector is stated, the insulating barrier is connected with the active material coat.
7. battery core according to claim 1, it is characterised in that the lug body includes the second collector, described second
There is clear area and insulating barrier coating area, the insulating barrier is arranged on the insulating barrier coating area, the blank on collector
The width in area is more than or equal to the width of the insulating barrier coating area, and the width is the chi in the short transverse of the battery core
It is very little.
8. the battery core according to any one of claim 1-7, it is characterised in that the insulating barrier include the first insulating segment and
Second insulating segment, first insulating segment is located between the battery core main body and second insulating segment, second insulating segment
The upper side away from the battery core main body extends to the bending place of the lug along the direction away from the battery core main body, and locates
In side of the bending place away from the battery core main body.
9. the battery core according to any one of claim 1-7, it is characterised in that the insulating barrier is polyvinylidene fluoride layer.
10. a kind of battery, it is characterised in that including shell, battery core and pole, the battery core is any one of claim 1-9
Described battery core, the lug is electrically connected between the battery core main body and the pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146853.5U CN206432317U (en) | 2017-02-17 | 2017-02-17 | Battery core and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146853.5U CN206432317U (en) | 2017-02-17 | 2017-02-17 | Battery core and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206432317U true CN206432317U (en) | 2017-08-22 |
Family
ID=59590308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720146853.5U Active CN206432317U (en) | 2017-02-17 | 2017-02-17 | Battery core and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206432317U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326699A (en) * | 2019-08-14 | 2020-06-23 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN112151730A (en) * | 2020-09-25 | 2020-12-29 | 飞毛腿(福建)电子有限公司 | Laser welding assembly structure of mobile power supply and assembly process thereof |
| CN112332039B (en) * | 2020-01-17 | 2021-10-22 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module, and device using battery as power supply |
| WO2022001968A1 (en) * | 2020-06-30 | 2022-01-06 | 厦门海辰新能源科技有限公司 | Current collector and preparation process therefor, pole piece and preparation process therefor, and lithium battery |
| CN115295976A (en) * | 2022-10-08 | 2022-11-04 | 武汉亿纬储能有限公司 | Spacing piece of utmost point ear, top cap subassembly and battery |
| CN115863931A (en) * | 2021-09-27 | 2023-03-28 | 宁德时代新能源科技股份有限公司 | Pole piece, pole core assembly and preparation method thereof, battery monomer, battery and power utilization device |
| WO2023216076A1 (en) * | 2022-05-09 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Pole piece, battery cell, battery and electrical apparatus |
-
2017
- 2017-02-17 CN CN201720146853.5U patent/CN206432317U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326699A (en) * | 2019-08-14 | 2020-06-23 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| WO2021027492A1 (en) * | 2019-08-14 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Electrode assembly and battery cell |
| CN112332039B (en) * | 2020-01-17 | 2021-10-22 | 宁德时代新能源科技股份有限公司 | Secondary battery, battery module, and device using battery as power supply |
| WO2022001968A1 (en) * | 2020-06-30 | 2022-01-06 | 厦门海辰新能源科技有限公司 | Current collector and preparation process therefor, pole piece and preparation process therefor, and lithium battery |
| CN112151730A (en) * | 2020-09-25 | 2020-12-29 | 飞毛腿(福建)电子有限公司 | Laser welding assembly structure of mobile power supply and assembly process thereof |
| CN115863931A (en) * | 2021-09-27 | 2023-03-28 | 宁德时代新能源科技股份有限公司 | Pole piece, pole core assembly and preparation method thereof, battery monomer, battery and power utilization device |
| WO2023216076A1 (en) * | 2022-05-09 | 2023-11-16 | 宁德时代新能源科技股份有限公司 | Pole piece, battery cell, battery and electrical apparatus |
| CN115295976A (en) * | 2022-10-08 | 2022-11-04 | 武汉亿纬储能有限公司 | Spacing piece of utmost point ear, top cap subassembly and battery |
| CN115295976B (en) * | 2022-10-08 | 2023-01-13 | 武汉亿纬储能有限公司 | Spacing piece of utmost point ear, top cap subassembly and battery |
| US11984619B2 (en) | 2022-10-08 | 2024-05-14 | Eve Energy Storage Co., Ltd. | Tab limiting sheet, top cover assembly, and battery |
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