CN210723261U - Protective film for lithium ion battery - Google Patents
Protective film for lithium ion battery Download PDFInfo
- Publication number
- CN210723261U CN210723261U CN201921944149.XU CN201921944149U CN210723261U CN 210723261 U CN210723261 U CN 210723261U CN 201921944149 U CN201921944149 U CN 201921944149U CN 210723261 U CN210723261 U CN 210723261U
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- Prior art keywords
- coating film
- lithium ion
- ion battery
- film
- side wall
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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 provides a lithium ion battery protection film relates to lithium ion battery technical field. The protective film for the lithium ion battery comprises a first top coating film, a side coating film, a bottom coating film and a second top coating film, wherein the bottom of the first top coating film is bonded with the top of the second top coating film, the side wall of the first top coating film is fixedly connected with the side wall of the side coating film, the side wall of the side coating film is fixedly connected with the side wall of the bottom coating film, and the side wall of the second top coating film is fixedly connected with the outer wall of the side coating film. The protective film for the lithium ion battery consists of an anticorrosive insulating layer, a heat-resistant layer and a wear-resistant layer, the selected materials have super-high temperature resistance, super-high corrosion resistance, super-high insulativity and wear resistance, and are economical and environment-friendly, the overall thickness is 120-150 um, and the protective film for the lithium ion battery is light and thin, is made of polyester polymers, does not contain toxic and harmful substances, and is environment-friendly.
Description
Technical Field
The utility model relates to a lithium ion battery technical field specifically is a protection film for lithium ion battery.
Background
The lithium ion battery is mainly applied to the fields of automobiles, ships, energy storage and the like, and due to the pollution and the non-regenerability of fossil energy, the power lithium ion battery can be rapidly developed in the field of new energy in the future, so that the market demand is greatly increased.
The protection film is used for rolling up the subassembly outside the core is protected to paste before the core goes into the shell, and the shell is charged positively to present battery design majority, rolls up core and conch wall scraping when going into the shell, damages to roll up the core, very easily causes the short circuit, seriously probably leads to the battery weeping to cause the conflagration.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model discloses try to overcome above defect, consequently the utility model provides a protection film for lithium ion battery to reached the protection and rolled up the core, insulating anticorrosive high temperature resistance effect.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a lithium ion battery protection film, includes first top covering film, side covering film, end covering film and second top covering film, and the bottom of first top covering film bonds with the top of second top covering film, the lateral wall of first top covering film and the lateral wall fixed connection of side covering film, the lateral wall of side covering film and the lateral wall fixed connection of end covering film, the lateral wall of second top covering film and the outer wall fixed connection of side covering film.
The through hole has been seted up at the top of first top covering film, and the through hole has been seted up at the top of second top covering film, and special-shaped through hole has been seted up at the top of end covering tectorial membrane.
The utility model provides an inner structure of lithium ion battery protection film includes wearing layer, heat-resistant layer and anticorrosive insulation layer, the top of heat-resistant layer and the bottom fixed connection of wearing layer, and the bottom of heat-resistant layer bonds with anticorrosive insulation layer's top.
Further, through holes are formed in the tops of the first top coating film and the second top coating film, and special-shaped through holes are formed in the surface of the bottom coating film.
Furthermore, the wear-resistant layer is formed by spraying ceramic wear-resistant particles.
Further, the heat-resistant layer is mylar which is a polyester polymer.
Further, the anti-corrosion insulating layer is made of pp plastic.
Further, the thickness of the protective film for the lithium ion battery is 120um-150 um.
(III) advantageous effects
The utility model provides a pair of protection film for lithium ion battery. The method has the following beneficial effects:
1. the protective film for the lithium ion battery consists of an anticorrosive insulating layer, a heat-resistant layer and a wear-resistant layer, the selected materials have super-high temperature resistance, super-high corrosion resistance, super-high insulativity and wear resistance, and are economical and environment-friendly, the overall thickness is 120-150 um, and the protective film for the lithium ion battery is light and thin, is made of polyester polymers, does not contain toxic and harmful substances, and is environment-friendly.
2. This protection film for lithium ion battery bonds the bottom of first top coating film and the top of second top coating film, accomplishes the equipment to protection film for lithium ion battery promptly, convenient to use is convenient for deposit during the expansion.
Drawings
Fig. 1 is a schematic view of the unfolding structure of the present invention;
FIG. 2 is a schematic view of the structure assembly of the present invention;
fig. 3 is a schematic view of the cross-sectional structure of the present invention.
In the figure: 1. a first top cover film; 2. coating a film on the side; 3. coating a film on the bottom; 4. a second top cover film; 5. a wear layer; 6. a heat-resistant layer; 7. an anticorrosive insulating layer; 8. a through hole; 9. and (4) forming a special-shaped through hole.
Detailed Description
According to the utility model discloses an aspect, the utility model provides a protection film for lithium ion battery, as shown in fig. 1-3, including first top covering film 1, side covering film 2, end covering film 3 and second top covering film 4, the bottom of first top covering film 1 bonds with the top of second top covering film 4, during the use, bonds the bottom of first top covering film 1 and the top of second top covering film 4, accomplishes the equipment to protection film for lithium ion battery promptly, and is easy and simple to handle, the lateral wall of first top covering film 1 and the lateral wall fixed connection of side covering film 2, the lateral wall of side covering film 2 and the lateral wall fixed connection of end covering film 3, the lateral wall of second top covering film 4 and the outer wall fixed connection of side covering film 2, the practicality is answered to the structure letter.
In this embodiment, through-hole 8 has been seted up at the top of first top covering film 1, through-hole 8 has been seted up at the top of second top covering film 4, special-shaped through-hole 9 has been seted up at the top of end covering film 3, the through-hole 8 of same position size has all been seted up at the top of first top covering film 1, second top covering film 4, through-hole 8 is seted up according to the top structure of rolling up the core, special-shaped through-hole 9 has been seted up on the surface of end covering film 3, special-shaped through-hole 9 is seted up according to rolling up core bottom structure, carries out comprehensive protection to rolling up the core under the condition that does not influence the use of.
In this embodiment, the internal structure of the lithium ion battery protection film comprises a wear-resistant layer 5, a heat-resistant layer 6 and an anticorrosive insulation layer 7, the top of the heat-resistant layer 6 is fixedly connected with the bottom of the wear-resistant layer 5, the wear-resistant layer 5 is formed by spraying ceramic wear-resistant particles, the ceramic wear-resistant particles on the outer surface have good wear resistance, and are not easy to scratch or damage when the protection film is rubbed with a battery shell, the bottom of the heat-resistant layer 6 is bonded with the top of the anticorrosive insulation layer 7, the heat-resistant layer 6 is a polyester polymer mylar, the middle polyester polymer mylar has good heat resistance, and can be protected at a higher temperature, the anticorrosive insulation layer 7 is made of pp plastic, the pp plastic on the inner layer has good corrosion resistance and insulation, so that the negative electrode on the outer layer of the winding core can be isolated from contacting with the shell, potential safety hazards can be avoided, and the lithium ion battery protection film has no toxic and harmful substances, is environment-friendly.
Furthermore, the thickness of lithium ion battery protection film is 120um-150um, not only plays the effect of the protection roll core, and is lighter and thinner moreover, saves raw materials, and is more economic.
The working principle is as follows: when the protective film is used, the bottom of the first top coating film 1 is bonded with the top of the second top coating film 4, the protective film for the lithium ion battery is assembled, the protective film for the lithium ion battery is sleeved outside the winding core from top to bottom according to the structure of the top and the bottom of the winding core, and the installation is finished, the protective film for the lithium ion battery is formed by combining pp plastics, polyester high polymer mylar and ceramic wear-resistant particles together, the ceramic wear-resistant particles on the outer surface have good wear resistance, the protective film is not easy to scratch or damage when being rubbed with a battery shell, the middle polyester high polymer mylar has good heat resistance, the protective film can also play a role in protection under the condition of high temperature, the pp plastics on the inner layer have good corrosion resistance and insulation, the contact between the cathode on the outer layer of the winding core and a shell can be isolated, potential safety hazards can be avoided, and the protective film for the lithium ion battery has, is environment-friendly.
Claims (6)
1. The utility model provides a lithium ion battery is with protection film, includes first top coating film (1), side coating film (2), end coating film (3) and second top coating film (4), its characterized in that: the bottom of the first top coating film (1) is bonded with the top of the second top coating film (4), the side wall of the first top coating film (1) is fixedly connected with the side wall of the side coating film (2), the side wall of the side coating film (2) is fixedly connected with the side wall of the bottom coating film (3), and the side wall of the second top coating film (4) is fixedly connected with the outer wall of the side coating film (2);
the top of the first top coating film (1) is provided with a through hole (8), the top of the second top coating film (4) is provided with a through hole (8), and the top of the bottom coating film (3) is provided with a special-shaped through hole (9);
the internal structure of the lithium ion battery protective film comprises a wear-resistant layer (5), a heat-resistant layer (6) and an anticorrosive insulating layer (7), wherein the top of the heat-resistant layer (6) is fixedly connected with the bottom of the wear-resistant layer (5), and the bottom of the heat-resistant layer (6) is bonded with the top of the anticorrosive insulating layer (7).
2. The protective film for a lithium ion battery according to claim 1, characterized in that: through holes (8) are formed in the tops of the first top coating film (1) and the second top coating film (4), and special-shaped through holes (9) are formed in the surface of the bottom coating film (3).
3. The protective film for a lithium ion battery according to claim 1, characterized in that: the wear-resistant layer (5) is formed by spraying ceramic wear-resistant particles.
4. The protective film for a lithium ion battery according to claim 1, characterized in that: the heat-resistant layer (6) is a polyester polymer mylar.
5. The protective film for a lithium ion battery according to claim 1, characterized in that: the anti-corrosion insulating layer (7) is made of pp plastic.
6. The protective film for a lithium ion battery according to claim 1, characterized in that: the thickness of lithium ion battery protective film is 120um-150 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944149.XU CN210723261U (en) | 2019-11-12 | 2019-11-12 | Protective film for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944149.XU CN210723261U (en) | 2019-11-12 | 2019-11-12 | Protective film for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210723261U true CN210723261U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921944149.XU Active CN210723261U (en) | 2019-11-12 | 2019-11-12 | Protective film for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210723261U (en) |
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2019
- 2019-11-12 CN CN201921944149.XU patent/CN210723261U/en active Active
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