CN208014838U - Soft bag lithium ionic cell and electronic equipment - Google Patents
Soft bag lithium ionic cell and electronic equipment Download PDFInfo
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- CN208014838U CN208014838U CN201721675916.2U CN201721675916U CN208014838U CN 208014838 U CN208014838 U CN 208014838U CN 201721675916 U CN201721675916 U CN 201721675916U CN 208014838 U CN208014838 U CN 208014838U
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- pole piece
- insulating coating
- soft bag
- cathode pole
- lithium ionic
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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 is about a kind of soft bag lithium ionic cell and electronic equipment, which includes：Naked battery core, electrolyte and shell, naked battery core includes anode pole piece, cathode pole piece and diaphragm, the anode pole piece and the cathode pole piece are arranged using winding-structure, the membrane winding is between the anode pole piece and the cathode pole piece, the cathode pole piece is outside the anode pole piece, the height of cathode pole piece in same circle is higher than anode pole piece, the surface in the overhanging area at four turnings of the cathode pole piece of each circle is coated with the stronger insulating coating of plasticity, and overhanging area is the region that cathode pole piece is higher than anode pole piece.Since the plasticity of insulating coating is stronger, so as to effectively enhance soft bag lithium ionic cell each turning mechanical strength, and insulating coating can also effectively prevent positive and negative anodes pole piece contact, improve the safety that soft bag lithium ionic cell uses.
Description
Technical field
The utility model is related to battery technology more particularly to a kind of soft bag lithium ionic cells and electronic equipment.
Background technology
Lithium ion battery is high with its operating voltage, energy density is high, memory-less effect and advantages of environment protection are by section
Attracting attention for boundary and industrial circle is ground, lithium ion battery is widely used in mobile phone, laptop, tablet computer, digital phase at present
In the portable electronic devices such as machine.
Existing soft bag lithium ionic cell includes naked battery core and shell, and naked battery core is by anode pole piece, cathode pole piece and built-in
Isolation film composition between positive and negative anodes pole piece.Four corners on soft bag lithium ionic cell vertex are the weak places of comparison, work as lithium
When preparation, assembling or user are using occurring wound or falling, the position of four angular vertexs of battery is easier ion battery
Impaired, the especially naked overhanging area's breakage bending of battery core apex angle anode easily causes the risk of positive and negative anodes pole piece contact internal short-circuit,
It can cause battery catches fire when serious.Therefore carrying out insulation protection to Soft Roll polymer Li-ion battery quadrangle is very important.
Utility model content
To overcome the problems in correlation technique, a kind of soft bag lithium ionic cell of the utility model offer and electronics are set
It is standby.
According to the utility model embodiment in a first aspect, provide a kind of soft bag lithium ionic cell, including：Naked battery core, electricity
Solution liquid and shell, the naked battery core are immersed in the electrolyte, and the shell coats outside the naked battery core and the electrolyte；
The naked battery core includes anode pole piece, cathode pole piece and diaphragm, and the anode pole piece and the cathode pole piece use
Winding-structure arrange, the membrane winding between the anode pole piece and the cathode pole piece, the cathode pole piece wound on
Outside the anode pole piece, the height of the cathode pole piece in same circle is higher than anode pole piece, and four of the cathode pole piece of each circle turn
The surface in the overhanging area at angle is coated with the stronger insulating coating of plasticity, and the overhanging area is cathode pole piece higher than anode pole piece
Region.
Optionally, the insulating coating is using any one in following material：The stronger binder of plasticity, aluminium oxide
Coating made of coating, silica and bonding agent configuration made of being configured with bonding agent.
Optionally, the thickness of the insulating coating is 2-50 microns.
Optionally, the width of the insulating coating is 0.1-2.5 millimeters, and the width of the insulating coating is described overhanging to prolong
The short transverse in area.
Optionally, the surface for prolonging the overhanging area of the plane domain of 5-20 millimeters of four turnings extension of the cathode pole piece applies
It is covered with the insulating coating.
According to the second aspect of the utility model embodiment, a kind of electronic equipment is provided, including the institute that first aspect provides
State soft bag lithium ionic cell.
The technical solution that the embodiments of the present invention provide can include the following benefits：By in the negative of each circle
The surface in the overhanging area at four turnings of pole pole piece is coated with the stronger insulating coating of plasticity, which is that cathode pole piece is high
In the region of anode pole piece, since the plasticity of insulating coating is stronger, so as to effectively enhance each of soft bag lithium ionic cell
The mechanical strength at turning so that each turning of the cathode pole piece of soft bag lithium ionic cell is not pliable, and due to cathode pole piece
The surface in overhanging area at each turning be coated with insulating coating, even if overhanging area's breakage varus at each turning of cathode pole piece, absolutely
Edge coating can also effectively prevent positive and negative anodes pole piece contact, avoid the occurrence risk of battery fire, improve Soft Roll lithium from
The safety that sub- battery uses.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The utility model can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and for explaining the principles of the present invention together with specification.
Fig. 1 is a kind of structural schematic diagram of the naked battery core of soft bag lithium ionic cell.
Fig. 2 is the schematic diagram of the insulating coating on cathode pole piece.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent device and method of some aspects be described in detail in the appended claims, the utility model.
Lithium ion battery is a kind of secondary cell (rechargeable battery), it relies primarily on lithium ion and moves between a positive electrode and a negative electrode
It moves and carrys out work.In charge and discharge process, Li+ embedded and deintercalations back and forth between two electrodes；When charging, Li+ from positive deintercalation,
It is embedded in cathode by electrolyte, cathode is in rich lithium state；When electric discharge (even if with process of battery), in cathode carbon-coating
Lithium ion is deviate from, and moves back anode, and the lithium ion for returning anode is more, and discharge capacity is higher.Lithium ion battery, which generally uses, to be contained
There is the material of elemental lithium as electrode, is the representative of modern high performance battery.
The utility model provides a kind of soft bag lithium ionic cell, the soft bag lithium ionic cell include naked battery core, electrolyte and
Shell, naked battery core are impregnated in the electrolytic solution, and shell coats outside naked battery core and electrolyte.Fig. 1 is the naked electricity of soft bag lithium ionic cell
A kind of structural schematic diagram of core, as shown in Figure 1, naked battery core includes anode pole piece, cathode pole piece and diaphragm, anode pole piece and cathode
Pole piece is arranged using winding-structure, and membrane winding is between anode pole piece and cathode pole piece, and cathode pole piece is wound on anode pole piece
Outside.The height of cathode pole piece in same circle is higher than anode pole piece, and the height of same circle septation is higher than cathode chip, and from interior
It encloses to the height of outer ring anode pole piece and cathode pole piece and gradually increases, diaphragm is used to be isolated the anode pole piece and cathode of naked battery core
Pole piece, to prevent naked battery core internal positive pole piece and cathode pole piece to be in direct contact and cause short circuit.In the present embodiment, each circle is born
The surface in the overhanging area at four turnings of pole pole piece is coated with the stronger insulating coating of plasticity, which is that cathode pole piece is high
In the region of anode pole piece.
Fig. 2 is the schematic diagram of the insulating coating on cathode pole piece, and Fig. 2 is the schematic diagram after cathode pole piece expansion, such as Fig. 2
It is shown, only insulating coating is coated at the marginal portion interval of cathode pole piece.Since the plasticity of insulating coating is stronger, so as to
The mechanical strength at each turning of enough effectively enhancing soft bag lithium ionic cells so that the cathode pole piece of soft bag lithium ionic cell respectively turns
Angle is not pliable, and since the surface in the overhanging area at each turning of cathode pole piece is coated with insulating coating, even if cathode pole piece
Each turning overhanging area's breakage varus, insulating coating can also effectively prevent positive and negative anodes pole piece contact, avoid battery fire
The occurrence risk of calamity improves the safety that soft bag lithium ionic cell uses.
Optionally, insulating coating is using any one in following material：The stronger binder of plasticity, aluminium oxide with it is viscous
Connect coating made of coating, silica and bonding agent configuration made of agent configuration.The bonding agent can be hot melt adhesive, and hot melt adhesive can
Plasticity is strong, to strengthen soft bag lithium ionic cell each turning mechanical strength.Due to the permeability of aluminium oxide and silica
It is good, using coating made of coating, silica and bonding agent configuration made of aluminium oxide and bonding agent configuration as insulating coating,
It can not only reinforce the mechanical strength at each turning of soft bag lithium ionic cell, and insulating coating stops the infiltration of electrolyte
It is small, it is small to be influenced on the liquid-keeping property of naked battery core.
Optionally, the thickness of insulating coating is 2-50 microns (um), and the thickness of insulating coating can be according to insulating coating
The suitable thickness of material selection, for example, for the strong insulating coating of penetrating power, even if using thicker insulating coating to naked electricity
The liquid-keeping property of core influences also very little, and can reinforce the machine at each turning of soft bag lithium ionic cell using thicker insulating coating
Tool intensity, and insulation effect is more preferable.For the weak insulating coating of penetrating power, if can be stopped using thicker insulating coating
The infiltration of electrolyte, very big on the influence of the liquid-keeping property of naked battery core, therefore, it is necessary to use relatively thin insulating coating to reduce to naked
The influence of the liquid-keeping property of battery core.
Optionally, the width of insulating coating is 0.1-2.5 millimeters (mm), and the width of insulating coating is the height for prolonging overhanging area
Direction, the width of insulating coating can be less than or equal to the height in overhanging area.
Optionally, the surface for prolonging the overhanging area of the plane domain of 5-20 millimeters of four turnings extension of cathode pole piece is coated with
Insulating coating, shown referring to Fig.1, closely the overhanging area of the plane domain at turning is also coated with insulating coating in Fig. 1.
Optionally, box hat, aluminum hull, aluminum plastic film etc. may be used in the shell of soft bag lithium ionic cell.Diaphragm is a kind of through spy
Different molding macromolecule membrane, film has microcellular structure, lithium ion can be allowed to pass freely through, and electronics cannot pass through.Electrolyte
Solute can be：Lithium salts, such as lithium perchlorate (LiClO4), lithium hexafluoro phosphate (LiPF6), LiBF4 (LiBF4).
The solvent of electrolyte can be：Organic solvent, such as ether, vinyl carbonate, propylene carbonate, diethyl carbonate.Lithium from
The active material of the anode of sub- battery is generally LiMn2O4, cobalt acid lithium or nickel-cobalt lithium manganate material etc., and lithium ion battery is born
Pole active material is the carbon of graphite or approximate graphite-structure.
The utility model also provides a kind of electronic equipment, which is powered using above-mentioned soft bag lithium ionic cell,
The electronic equipment for example can be mobile phone, computer, digital broadcast terminal, messaging devices, game console, and tablet is set
It is standby, Medical Devices, body-building equipment, personal digital assistant etc..
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
Novel other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and include undocumented skill of the utility model
Common knowledge in art field or conventional techniques.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are pointed out by following claims.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
Book is sought to limit.
Claims (6)
1. a kind of soft bag lithium ionic cell, which is characterized in that including：Naked battery core, electrolyte and shell, the naked battery core are immersed in
In the electrolyte, the shell coats outside the naked battery core and the electrolyte；
The naked battery core includes anode pole piece, cathode pole piece and diaphragm, and the anode pole piece and the cathode pole piece are using winding
Structural arrangement, the membrane winding is between the anode pole piece and the cathode pole piece, and the cathode pole piece is wound on described
Outside anode pole piece, the height of the cathode pole piece in same circle is higher than anode pole piece, four turnings of the cathode pole piece of each circle
The surface in overhanging area is coated with the stronger insulating coating of plasticity, and the overhanging area is the area that cathode pole piece is higher than anode pole piece
Domain.
2. soft bag lithium ionic cell according to claim 1, which is characterized in that the insulating coating uses in following material
Any one：Coating, silica and bonding agent configure made of the stronger binder of plasticity, aluminium oxide and bonding agent configuration
Made of coating.
3. soft bag lithium ionic cell according to claim 1 or 2, which is characterized in that the thickness of the insulating coating is 2-
50 microns.
4. soft bag lithium ionic cell according to claim 1 or 2, which is characterized in that the width of the insulating coating is
0.1-2.5 millimeters, the width of the insulating coating is the short transverse for prolonging the overhanging area.
5. soft bag lithium ionic cell according to claim 1 or 2, which is characterized in that prolong the cathode pole piece four turn
The surface that angle extends the overhanging area of 5-20 millimeters of plane domain is coated with the insulating coating.
6. a kind of electronic equipment, which is characterized in that including：Claim 1-5 any one of them soft bag lithium ionic cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675916.2U CN208014838U (en) | 2017-12-06 | 2017-12-06 | Soft bag lithium ionic cell and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675916.2U CN208014838U (en) | 2017-12-06 | 2017-12-06 | Soft bag lithium ionic cell and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208014838U true CN208014838U (en) | 2018-10-26 |
Family
ID=63880424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721675916.2U Active CN208014838U (en) | 2017-12-06 | 2017-12-06 | Soft bag lithium ionic cell and electronic equipment |
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| Country | Link |
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| CN (1) | CN208014838U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211279A (en) * | 2018-11-22 | 2020-05-29 | 宁德新能源科技有限公司 | Isolating membrane and lithium ion battery |
| CN113381080A (en) * | 2021-06-15 | 2021-09-10 | 广东国光电子有限公司 | Manufacturing method of battery roll core and battery roll core |
| CN113707843A (en) * | 2021-09-29 | 2021-11-26 | 珠海冠宇电池股份有限公司 | Battery cell and electrochemical device |
| CN113711410A (en) * | 2021-03-31 | 2021-11-26 | 宁德新能源科技有限公司 | Electrode assembly and electronic device |
| CN114497695A (en) * | 2022-01-12 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Soft packet of lithium cell and electric automobile |
-
2017
- 2017-12-06 CN CN201721675916.2U patent/CN208014838U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211279A (en) * | 2018-11-22 | 2020-05-29 | 宁德新能源科技有限公司 | Isolating membrane and lithium ion battery |
| CN113711410A (en) * | 2021-03-31 | 2021-11-26 | 宁德新能源科技有限公司 | Electrode assembly and electronic device |
| CN113381080A (en) * | 2021-06-15 | 2021-09-10 | 广东国光电子有限公司 | Manufacturing method of battery roll core and battery roll core |
| CN113381080B (en) * | 2021-06-15 | 2022-06-10 | 广东国光电子有限公司 | Manufacturing method of battery roll core and battery roll core |
| CN113707843A (en) * | 2021-09-29 | 2021-11-26 | 珠海冠宇电池股份有限公司 | Battery cell and electrochemical device |
| CN114497695A (en) * | 2022-01-12 | 2022-05-13 | 广州小鹏汽车科技有限公司 | Soft packet of lithium cell and electric automobile |
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