CN209282286U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN209282286U CN209282286U CN201920092355.6U CN201920092355U CN209282286U CN 209282286 U CN209282286 U CN 209282286U CN 201920092355 U CN201920092355 U CN 201920092355U CN 209282286 U CN209282286 U CN 209282286U
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- CN
- China
- Prior art keywords
- negative electrode
- electrode tab
- lithium ion
- ion battery
- shell
- Prior art date
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to field of lithium ion battery, disclose a kind of reliable lithium ion battery of electrical property, comprising: lamellar body, electrolyte and shell, wherein the lamellar body and electrolyte are sealed in the shell, the lamellar body includes positive plate, negative electrode tab and diaphragm bag, the negative electrode tab is encapsulated in the diaphragm bag, the shape of the diaphragm bag matches in the shape of the negative electrode material coat of the negative electrode tab, the negative electrode lug of the negative electrode tab is stretched out out of described diaphragm bag, the positive plate, the tab of negative electrode tab stretches out outside the shell from the shell respectively.
Description
Technical field
The utility model relates to lithium ion battery manufacturing field more particularly to a kind of laminated lithium ion batteries.
Background technique
Traditional lithium ion battery is more suitable for the production of rectangular cell, this use using winding either lamination process
New property opens a kind of novel technology path, is suitable for battery production of different shapes.
Utility model content
The first purpose of the utility model embodiment is to provide a kind of lithium-ion electric for advantageously reducing battery short circuit rate
Pond.
In a first aspect, a kind of lithium ion battery provided by the embodiment of the utility model, comprising: lamellar body, electrolyte and
Shell, wherein the lamellar body and electrolyte are sealed in the shell,
The lamellar body includes positive plate, negative electrode tab and diaphragm bag, and the negative electrode tab is encapsulated in the diaphragm bag, institute
The shape for stating diaphragm bag matches in the shape of the negative electrode material coat of the negative electrode tab, and the negative electrode lug of the negative electrode tab is from institute
It states in diaphragm bag and stretches out,
The positive plate, negative electrode tab tab respectively from the shell stretch out outside the shell.
Optionally, the outermost pole piece of the lamellar body is the negative electrode tab being encapsulated in the diaphragm bag.
Optionally, the width of the positive plate is narrower than the width of the negative electrode tab.
Optionally, the shell is aluminum plastic film shell, steel shell or aluminum hull.
Optionally, the diaphragm bag is located at the periphery upper and lower level heat-sealing outside the negative electrode material coating layer region of the negative electrode tab
It links together.
Optionally, the width in the heat-sealing region of the diaphragm bag is 0.2--50 millimeters.
Optionally, the spacing of inward flange to the negative electrode tab in the heat-sealing region of the diaphragm bag is 0.1-10 millimeters.
Optionally, the heat-sealing region of the diaphragm bag is in interruption shape or sequential like.
It optionally, is the diaphragm for being packaged with the negative electrode tab respectively positioned at the outermost component of the lamellar body
Bag.
Therefore using the technical solution of the present embodiment negative electrode tab bag making, can further effectively prevent in negative electrode tab
The negative electrode material to fall off contacts the technical issues of leading to battery short circuit with anode, more effectively protects the cathode of battery, compared to
Anode is easier losing powder, cathode bag making, has improvement for zero electricity, low pressure caused by cathode picking.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
It does not constitute improper limits to the present invention.
Fig. 1 is a kind of the schematic diagram of the section structure for negative electrode tab bag making that the utility model embodiment 1 provides.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
Embodiment 1
A kind of laminated lithium ion battery for advantageously reducing battery short circuit rate is present embodiments provided, it is main, comprising: folded
Sheet body, electrolyte and shell, wherein lamellar body and electrolyte are sealed in shell, and electrolyte sufficiently impregnates lamellar body, electricity
Anode, the cathode of core are stretched out from the shell of sealing respectively, using as external electrode.
It is in place of the lamellar body of the present embodiment and prior art main difference, the present embodiment uses 102 bag making of negative electrode tab
Technical solution, specifically,
Lamellar body includes positive plate, negative electrode tab 102 and diaphragm bag 101, and negative electrode tab 102 is encapsulated in be made of two sides diaphragm
Diaphragm bag 101 in, the shape of diaphragm bag 101 matches in the shape of the negative electrode material coat of negative electrode tab 102, cathode coating
Region is encapsulated in comprehensively in diaphragm bag 101, and the negative electrode lug 1021 of negative electrode tab 102 is stretched out out of diaphragm bag 101, encapsulates negative electrode tab
102 diaphragm bag 101 is stacked on top of one another with positive plate, is separated with one between making between the positive plate of arbitrary neighborhood face, negative electrode tab 102
Membrane layer, the two outermost pole pieces positioned at lamellar body are the diaphragm bag 101 for being placed in negative electrode tab 102.
Therefore using the technical solution of 102 bag making of the present embodiment negative electrode tab, it can further effectively prevent negative electrode tab
The negative electrode material to fall off on 102 contacts the technical issues of leading to battery short circuit with anode, more effectively protects the cathode of battery, phase
Than being easier losing powder in anode, cathode bag making has improvement for zero electricity, low pressure caused by cathode picking.
In addition, using the technical solution of 102 bag making of negative electrode tab, positioned at the two outermost negative electrode tabs 102 quilt of lamellar body
Diaphragm bag 101 coats, and effectively improves the insulating properties of cathode and shell, further increases the safety of battery.
As the signal of the present embodiment, the positive electrode coating width of the positive plate of the present embodiment is be slightly narrower than negative electrode tab 102
On negative electrode material coating width, when its face is laminated, the positive electrode of the everywhere on positive plate can face have cathode
Material avoids lithium from being precipitated to form burr.
As the signal of the present embodiment, be coated with positive electrode in the entire width direction on positive plate, i.e., it is positive
Material coating width is equal to the width of positive plate, has been coated with negative electrode material, cathode in the entire width direction of negative electrode tab 102
Material coating width is equal to the width of negative electrode tab 102.
As the signal of the present embodiment, the shell of the present embodiment can be aluminum plastic film shell, or aluminum hull remittance, steel shell
Or rubber shell etc..
As the signal of the present embodiment, the diaphragm bag 101 of the negative electrode tab 102 of the present embodiment is preferably but not limited to using full packet
The structure of peripheral edge connection, is limited all directions of the cathode coating zone in negative electrode tab 102, pole piece is avoided to shift.
Wherein the edge connection of diaphragm bag 101 can be, but not limited to two membrane layer up and down for making diaphragm bag 101 using hot pressing
Melted by heating is combined together, and forms a heat-sealing region, and wherein the heat-sealing region can be intermittent or continuous.
Wherein the width in the heat-sealing region can be 0.2--50 millimeters；The inward flange in the heat-sealing region is to negative electrode tab 102
Spacing is 0.1-10 millimeters.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (9)
1. a kind of lithium ion battery, characterized in that include: lamellar body, electrolyte and shell, wherein the lamellar body and electricity
Solution liquid is sealed in the shell,
The lamellar body includes positive plate, negative electrode tab and diaphragm bag, and the negative electrode tab is encapsulated in the diaphragm bag, it is described every
The shape of film bag matches in the shape of the negative electrode material coat of the negative electrode tab, the negative electrode lug of the negative electrode tab from it is described every
It is stretched out in film bag,
The positive plate, negative electrode tab tab respectively from the shell stretch out outside the shell.
2. lithium ion battery according to claim 1, characterized in that
The outermost pole piece of the lamellar body is the negative electrode tab being encapsulated in the diaphragm bag.
3. lithium ion battery according to claim 1, characterized in that
The width of the positive plate is narrower than the width of the negative electrode tab.
4. lithium ion battery according to claim 1, characterized in that
The shell is aluminum plastic film shell, steel shell or aluminum hull.
5. lithium ion battery according to claim 1, characterized in that
The periphery upper and lower level heat-sealing that the diaphragm bag is located at outside the negative electrode material coating layer region of the negative electrode tab links together.
6. lithium ion battery according to claim 5, characterized in that
The width in the heat-sealing region of the diaphragm bag is 0.2--50 millimeters.
7. lithium ion battery according to claim 5, characterized in that
The spacing of inward flange to the negative electrode tab in the heat-sealing region of the diaphragm bag is 0.1-10 millimeters.
8. lithium ion battery according to claim 5, characterized in that
The heat-sealing region of the diaphragm bag is in interruption shape or sequential like.
9. lithium ion battery according to claim 5, characterized in that
Outermost component positioned at the lamellar body is the diaphragm bag for being packaged with the negative electrode tab respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092355.6U CN209282286U (en) | 2019-01-18 | 2019-01-18 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920092355.6U CN209282286U (en) | 2019-01-18 | 2019-01-18 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209282286U true CN209282286U (en) | 2019-08-20 |
Family
ID=67605757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920092355.6U Active CN209282286U (en) | 2019-01-18 | 2019-01-18 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209282286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614104A (en) * | 2022-03-23 | 2022-06-10 | 上海兰钧新能源科技有限公司 | Lamination method and lithium battery |
-
2019
- 2019-01-18 CN CN201920092355.6U patent/CN209282286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614104A (en) * | 2022-03-23 | 2022-06-10 | 上海兰钧新能源科技有限公司 | Lamination method and lithium battery |
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