CN203119002U - Base gel gumming paper for lithium ion battery with rigid shell - Google Patents
Base gel gumming paper for lithium ion battery with rigid shell Download PDFInfo
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- CN203119002U CN203119002U CN2013200392032U CN201320039203U CN203119002U CN 203119002 U CN203119002 U CN 203119002U CN 2013200392032 U CN2013200392032 U CN 2013200392032U CN 201320039203 U CN201320039203 U CN 201320039203U CN 203119002 U CN203119002 U CN 203119002U
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- gumming paper
- shell
- base gel
- core
- gummed paper
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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 utility model discloses base gel gumming paper for a lithium ion battery with a rigid shell. The base gel gumming paper comprises a gumming paper body (1), wherein a plurality of small holes (2) are formed in the gumming paper body (1) and are in the shapes of a circle, a square, a rhombus, a triangle, a polygon or in irregular shapes; and the hole diameter of each small hole (2) is from 50 micrometers to 2 millimeters. The base gel gumming paper has the functions that A, the bottom of a rolled core wrapped by base gel is compact, so that the rolled core can easily enter the shell; B, the two ends of the bottom are completely wrapped by a gel tape, so that an isolating membrane and a pole piece at the bottom are prevented from being scratched by the metal ridge shell when the rolled core enters the shell; C, the electrical insulation is achieved, so that the short circuit is prevented from being caused between the pole piece of the rolled core and the metal shell; and D, the small holes are distributed in the gumming paper, so that an electrolyte can leak into the rolled core from the bottom of a bare electric core, and therefore, the electrolyte infiltration performance of an electric core is improved; and the electrolyte loss is avoided, thereby being beneficial for improving the electrochemical performance of the battery. The base gel gumming paper is novel in design, simple in structure as well as stable and reliable in working performance.
Description
Technical field
The utility model relates to a kind of primer gummed paper of duricrust lithium ion battery, particularly relates to the lithium ion battery of this duricrust class of similar aluminum hull or box hat.
Background technology
At present, in the production process of lithium ion battery, particularly the duricrust lithium ion battery will wrap primer to the volume core, touch volume core bottom uniformly with gummed paper exactly.The duricrust battery roll core pastes primer 3 effects: the volume core bottom of 1) wrapping primer is compact, goes into the shell ratio and is easier to; 2) gummed paper will be rolled up two ends, core bottom and all encase, and prevent that bottom diaphragm, pole piece are by the scratch of metal duricrust in core winding into shell; 3) have electronic isolation, prevent from rolling up core pole piece and metal shell and be short-circuited.The gummed paper of current use touch electric core bottom fully, battery bottom has the free state electrolyte of much not received by electric wicking after the fluid injection, when changing into the back vacuum pumping, this a part of electrolyte will be extracted out, cause the actual reservoir quantity of battery on the low side, thereby influence the performance of battery.So, after vacuumizing, also need battery is carried out an after-teeming liquid operation.At above situation, be necessary to design a kind of primer that can improve volume wicking liquid measure, thereby prevent the loss of electrolyte, and reduce operation, enhance productivity.
The utility model content
Technical problem to be solved in the utility model provides a kind of primer gummed paper that can improve the duricrust lithium ion battery of volume wicking liquid measure.
In order to solve the problems of the technologies described above, the primer gummed paper of the duricrust lithium ion battery that the utility model provides comprises the gummed paper body, is provided with some apertures at described gummed paper body.
The shape of described aperture is circular, square, rhombus, triangle, polygon or irregularly shaped.
The aperture of described aperture is 50 μ m～2mm.
The porosity of described aperture is 5%～50%.
Adopt the primer gummed paper of the duricrust lithium ion battery of technique scheme, guarantee that electrolyte can infiltrate the volume core from naked electric core bottom through small holes, thereby improve the electrolyte wetting property of electric core.Therefore, when vacuumizing, electrolyte in the battery can not be drawn out of and overflows battery along with inside battery gas, prevented the loss of electrolyte, can not cause that the actual electrolyte content of battery is on the low side yet and influence the performance of battery, nor need carry out the operation of after-teeming liquid to battery, and reduce operation, improved production efficiency.The porosity of gummed paper can not be excessive or too small.The too little electrolyte that can not guarantee of porosity can penetrate into the volume core from naked electric core bottom sufficiently.But the existence of excessive micropore can cause that the mechanical strength of gummed paper reduces.Have electronic isolation, prevent from rolling up core pole piece and metal shell and be short-circuited.Have enough mechanical properties, comprise puncture intensity, hot strength etc.Possess certain puncture intensity (especially vertical), in order to avoid roll up core in the dress shell, primer is scratched by hardness very high aluminum hull or box hat wall; Possess certain hot strength, avoid the mechanical strength of gummed paper low excessively, produce unnecessary waste, improved the manufacturing cost of enterprise.Adhesion strength is more intense.Certain adhesion strength is arranged, and the volume core bottom of wrapping primer is compact, go into the shell ratio and be easier to, and primer can not peel off with the volume core easily, also can not influence the performance of battery.
Effect of the present utility model: A wraps the volume core bottom compactness of primer, goes into the shell ratio and is easier to; The B adhesive tape all encases the two ends, bottom, has prevented that bottom diaphragm, pole piece are by the scratch of metal duricrust in core winding into shell; C has electronic isolation, prevents from rolling up core pole piece and metal shell and is short-circuited; The aperture of arranging is arranged on the D gummed paper, guarantee that electrolyte can infiltrate the volume core from naked electric core bottom, thereby improve the electrolyte wetting property of electric core, prevent electrolyte solution loss, the lifting of battery performance is had very great help.
In sum, the utility model is a kind of primer gummed paper that can improve the duricrust lithium ion battery of volume wicking liquid measure, the utility model is simple in structure, stable work in work, reliable, advantage is that electrolyte solution loss is more when having solved electric core production process and vacuumizing, thereby solved the problem that influences battery performance, for enterprise saves production cost, improved the excellent rate of production efficiency and battery.
Description of drawings
Fig. 1 is the primer gummed paper structural representation that is placed with circular aperture.
Fig. 2 is the primer gummed paper structural representation that is placed with square aperture.
Fig. 3 is the primer gummed paper structural representation that is placed with the aperture of rhombus.
Fig. 4 is the primer gummed paper structural representation that is placed with leg-of-mutton aperture.
Fig. 5 is the volume core front elevation of wrapping primer.
Fig. 6 is the volume core end view of wrapping primer.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the base film material of gummed paper body 1 is PP, PE, PVC or PET, on gummed paper body 1, present aperture 2 by modes such as punching press, acupuncture or ion sputterings, the shape of aperture 2 is circular, square, rhombus, triangle, polygon or irregularly shaped, the aperture of aperture 2 is 50 μ m～2mm, and the porosity of aperture 2 is 5%～50%.
Using method of the present utility model during the bag primer, pinches volume core 3 referring to Fig. 5 and Fig. 6 on the other hand, an end of lug 4 will be arranged down, and the gummed paper body 1 that will cut touch volume core 3 bottoms uniformly on the other hand, and gummed paper body 1 is floating, must not be with pole piece and barrier film bag wrinkle.
Shown in Fig. 5,6, the volume core bottom of wrapping primer is compact, and adhesive tape all encases the two ends, bottom, and belt width direction has overlap joint with volume core two fronts, and bottom diaphragm, pole piece do not have that flange exposes, adhesive tape is wrinkle resistant.
Embodiment 1:
Referring to Fig. 2, the present embodiment battery is aluminum hull 523450 types, and its reservoir quantity is 3.23 ± 0.2g.When using at the bottom of the common gummed paper bag, vacuumizing the electrolyte solution loss amount after changing into is 0.8g, needs fluid infusion again could satisfy the normal demand of battery.The gummed paper body 1 that the utility model adopts, its basis material is PP, use the diameter of the die-cut square aperture 2 of the mode of punching press to be 1.2mm, the porosity of aperture 2 is 6%, vacuumize the electrolyte solution loss amount after changing into and have only 0.05g, in the margin of tolerance of technological requirement, do not need fluid infusion again can carry out subsequent processing.
Embodiment 2:
The present embodiment battery is aluminum hull 404041 types, and its reservoir quantity is 2.65 ± 0.2g.When using at the bottom of the common gummed paper bag, vacuumizing the electrolyte solution loss amount after changing into is 0.53g, needs fluid infusion again could satisfy the normal demand of battery.The utility model uses the gummed paper body 1 of PET material, mode by ion sputtering makes gummed paper present erose aperture, average pore size is 50 μ m, the porosity of aperture 2 is 48%, when vacuumizing after changing into, the electrolyte solution loss amount has only 0.03g, in the margin of tolerance of technological requirement, does not need fluid infusion again can carry out subsequent processing.
Embodiment 3:
Referring to Fig. 1, the present embodiment battery is 535157 types, and its reservoir quantity is 6.37 ± 0.2g.When using at the bottom of the common gummed paper bag, vacuumizing the electrolyte solution loss amount after changing into is 1g, again fluid infusion could satisfy the normal demand of battery.The gummed paper body 1 that the utility model adopts, its basis material is PE, use the diameter of the aperture 2 of the circle that the mode of acupuncture obtains to be 2mm, the porosity of aperture 2 is 26%, vacuumize the electrolyte solution loss amount after changing into and have only 0.07g, in the margin of tolerance of technological requirement, do not need fluid infusion again can carry out subsequent processing.
Explanation is at last, above embodiment is that preferred implementation of the present utility model is only unrestricted in order to the technical solution of the utility model to be described, other modification that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away under the prerequisite of technical solutions of the utility model design, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. the primer gummed paper of a duricrust lithium ion battery comprises gummed paper body (1), it is characterized in that: be provided with some apertures (2) at described gummed paper body (1).
2. the primer gummed paper of duricrust lithium ion battery according to claim 1 is characterized in that: the shape of described aperture (2) is circular, square, rhombus, triangle, polygon or irregularly shaped.
3. the primer gummed paper of duricrust lithium ion battery according to claim 1 and 2, it is characterized in that: the aperture of described aperture (2) is 50 μ m～2mm.
4. the primer gummed paper of duricrust lithium ion battery according to claim 1 and 2, it is characterized in that: the porosity of described aperture (2) is 5%～50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200392032U CN203119002U (en) | 2013-01-24 | 2013-01-24 | Base gel gumming paper for lithium ion battery with rigid shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200392032U CN203119002U (en) | 2013-01-24 | 2013-01-24 | Base gel gumming paper for lithium ion battery with rigid shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119002U true CN203119002U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200392032U Expired - Fee Related CN203119002U (en) | 2013-01-24 | 2013-01-24 | Base gel gumming paper for lithium ion battery with rigid shell |
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| CN (1) | CN203119002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410108A (en) * | 2016-11-10 | 2017-02-15 | 东莞市振华新能源科技有限公司 | Porous high-temperature insulation gummed paper for lithium ion battery |
| CN106898823A (en) * | 2017-04-17 | 2017-06-27 | 深圳瑞隆新能源科技有限公司 | A kind of preparation method of water storage type flexible packing lithium ion electric core and battery |
| CN113471547A (en) * | 2021-05-18 | 2021-10-01 | 惠州锂威新能源科技有限公司 | Preparation method of battery and battery |
-
2013
- 2013-01-24 CN CN2013200392032U patent/CN203119002U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410108A (en) * | 2016-11-10 | 2017-02-15 | 东莞市振华新能源科技有限公司 | Porous high-temperature insulation gummed paper for lithium ion battery |
| CN106898823A (en) * | 2017-04-17 | 2017-06-27 | 深圳瑞隆新能源科技有限公司 | A kind of preparation method of water storage type flexible packing lithium ion electric core and battery |
| CN113471547A (en) * | 2021-05-18 | 2021-10-01 | 惠州锂威新能源科技有限公司 | Preparation method of battery and battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUNAN GAOYUAN BATTERY CO., LTD. Free format text: FORMER NAME: ZHUZHOU GAOYUAN BATTERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 412007 No. 1700, Taishan Road, Tianyuan District, Hunan, Zhuzhou Patentee after: Hunan Gaoyuan Battery Co., Ltd. Address before: 45 412007 zone, chestnut rain Industrial Park, hi tech Development Zone, Hunan, Zhuzhou Patentee before: Zhuzhou Gaoyuan Battery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20190124 |