CN211045480U - Lithium battery outer packaging film structure and battery case structure - Google Patents
Lithium battery outer packaging film structure and battery case structure Download PDFInfo
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- CN211045480U CN211045480U CN201921733041.6U CN201921733041U CN211045480U CN 211045480 U CN211045480 U CN 211045480U CN 201921733041 U CN201921733041 U CN 201921733041U CN 211045480 U CN211045480 U CN 211045480U
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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 an outer packaging film structure of a lithium battery, wherein an insulating base film comprises a first side part, a cover part, a second side part and a bottom part which are connected in sequence; the first side part is covered with a first insulating sheet, the cover part is provided with an explosion-proof opening, a negative opening and a positive opening which are respectively matched with the explosion-proof valve, the negative pole column and the positive pole column, the cover part is covered with a cover plate patch, the second side part is covered with a second insulating sheet, and the bottom part is covered with a third insulating sheet; through the outer envelope structure of lithium cell of above-mentioned optimal design, carry out integrative rubber coating through insulating base film to the battery aluminum hull, cladding apron curb plate and bottom plate improve the rubber coating convenience to can reduce the risk that the welding slag that causes when PACK welds gets into the aluminum hull face, promote between connection piece and the casing, insulating reliability between the adjacent cluster in the module, greatly reduced outer short circuit risk improves the battery security. The utility model discloses still provide a novel battery case structure.
Description
Technical Field
The utility model relates to a lithium ion battery technical field especially relates to an outer coating film structure of lithium cell and battery case structure.
Background
Since the 90 s of the 20 th century, lithium ion secondary batteries have proven to be effective in storing large amounts of energy in a small space. With the continuous development of new energy, lithium batteries are gradually accepted by people. In particular, in the field of new energy vehicles, the energy density of batteries has always been a goal pursued by all battery manufacturers. Therefore, the structure of the battery is also receiving more and more attention, and how to design a battery structure which is safe and has low cost is particularly important.
Therefore, the insulation effect or protection grade of the battery structure is a focus of attention of people, and besides some insulation protection in the battery, it is particularly important to design a reasonable structure for encapsulating the battery outside.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides an outer envelope structure of lithium cell and battery case structure.
The utility model provides an outer envelope structure of lithium cell, include: an insulating base film;
the insulating base film comprises a first side part, a cover part, a second side part and a bottom part which are connected in sequence; first side coats and is stamped first insulation piece, the lid be equipped with respectively with explosion-proof valve, negative pole post, positive pole post complex explosion-proof opening, negative pole opening and anodal opening, the lid coats and is stamped the apron paster, second side coats and is stamped the second insulation piece, the bottom covers there is the third insulation piece.
Preferably, the first insulation sheet and the second insulation sheet are symmetrically arranged at both sides of the cap sheet.
Preferably, the first insulation sheet, the second insulation sheet, and the third insulation sheet each have a rectangular structure.
Preferably, the positive electrode opening and the negative electrode opening are symmetrically arranged on both sides of the explosion-proof opening.
Preferably, the cover part is also provided with a positioning opening.
In the utility model, the insulating base film comprises a first side part, a cover part, a second side part and a bottom part which are connected in sequence; the first side part is covered with a first insulating sheet, the cover part is provided with an explosion-proof opening, a negative opening and a positive opening which are respectively matched with the explosion-proof valve, the negative pole column and the positive pole column, the cover part is covered with a cover plate patch, the second side part is covered with a second insulating sheet, and the bottom part is covered with a third insulating sheet; through the outer envelope structure of lithium cell of above-mentioned optimal design, carry out integrative rubber coating through insulating base film to the battery aluminum hull, cladding apron curb plate and bottom plate improve the rubber coating convenience to can reduce the risk that the welding slag that causes when PACK welds gets into the aluminum hull face, promote between connection piece and the casing, insulating reliability between the adjacent cluster in the module, greatly reduced outer short circuit risk improves the battery security.
The utility model discloses still provide a battery case structure, include: aluminum hull, apron and foretell lithium cell envelope structure outward.
Preferably, be equipped with explosion-proof valve, positive pole post and negative pole post on the apron, the lid of insulating base film covers on the apron, and explosion-proof valve is located in the explosion-proof opening, the negative pole post is located in the negative pole opening, the positive pole post is located anodal opening.
Preferably, the first side portion, the second side portion and the bottom portion are respectively covered on the side cover and the bottom cover at both sides of the aluminum case.
The utility model discloses in, the battery case structure that provides, its technological effect is similar with the outer envelope structure of above-mentioned lithium cell, consequently no longer gives unnecessary details.
Drawings
Fig. 1 is a schematic structural diagram of an outer coating structure of a lithium battery provided by the present invention.
Fig. 2 is a schematic structural diagram of the lithium battery outer packaging film structure and the cover plate matching structure of the battery case structure provided by the present invention.
Detailed Description
As shown in fig. 1 and 2, fig. 1 is a structural schematic diagram of an outer packaging film structure of a lithium battery provided by the present invention, and fig. 2 is a structural schematic diagram of an outer packaging film structure of a lithium battery with a battery case structure and a cover plate matched with the same provided by the present invention.
Referring to fig. 1 and 2, the utility model provides an outer envelope structure of lithium cell, include: an insulating base film 1;
the insulating base film 1 includes a first side portion, a cover portion, a second side portion, and a bottom portion connected in this order; first side coats and is stamped first insulation piece 21, the lid is equipped with respectively with explosion-proof valve 42, negative pole post 43, positive pole post 41 complex explosion-proof opening, negative pole opening and anodal opening, the lid coats and is stamped apron paster 3, second side coats and is stamped second insulating piece 22, the bottom covers has third insulating piece 23.
In the specific embodiment, the first insulation sheet 21 and the second insulation sheet 22 are symmetrically arranged at both sides of the cap sheet 3.
In other specific embodiments, the first, second, and third insulation sheets 21, 22, and 23 each have a rectangular structure. Among the choices of the insulating sheet material, a mica sheet, an epoxy plate, aerogel, etc. may be selected.
In a specific design of the cover portion, the positive electrode opening and the negative electrode opening are symmetrically arranged on both sides of the explosion-proof opening.
In order to improve the positioning accuracy, the cover part is further provided with a positioning opening 34.
The present embodiment also includes a battery case structure comprising: the lithium battery comprises an aluminum shell 5, a cover plate 4 and the lithium battery outer coating structure, wherein the cover plate 4 is provided with an explosion-proof valve 42, a positive pole column 41 and a negative pole column 43.
In the specific coating mode of the lithium battery outer coating structure, the first side portion, the second side portion and the bottom portion are respectively covered on the side covers and the bottom cover on two sides of the aluminum shell 5, the cover portion of the insulating base film 1 is covered on the cover plate 4, the explosion-proof valve 42 is located in the explosion-proof opening, the negative pole column 43 is located in the negative pole opening, and the positive pole column 41 is located in the positive pole opening.
In the embodiment, the proposed lithium battery outer packaging film structure comprises an insulating base film, a first side part, a cover part, a second side part and a bottom part which are connected in sequence; the first side part is covered with a first insulating sheet, the cover part is provided with an explosion-proof opening, a negative opening and a positive opening which are respectively matched with the explosion-proof valve, the negative pole column and the positive pole column, the cover part is covered with a cover plate patch, the second side part is covered with a second insulating sheet, and the bottom part is covered with a third insulating sheet; through the outer envelope structure of lithium cell of above-mentioned optimal design, carry out integrative rubber coating through insulating base film to the battery aluminum hull, cladding apron curb plate and bottom plate improve the rubber coating convenience to can reduce the risk that the welding slag that causes when PACK welds gets into the aluminum hull face, promote between connection piece and the casing, insulating reliability between the adjacent cluster in the module, greatly reduced outer short circuit risk improves the battery security.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. An overwrap film structure for a lithium battery, comprising: an insulating base film (1);
the insulating base film (1) comprises a first side part, a cover part, a second side part and a bottom part which are connected in sequence; first side coats and is stamped first insulating piece (21), the lid be equipped with respectively with explosion-proof valve (42), negative pole post (43), positive post (41) complex explosion-proof opening, negative pole opening and anodal opening, the lid coats and is stamped apron paster (3), second side coats and is stamped second insulating piece (22), the bottom covers has third insulating piece (23).
2. The lithium battery outer cladding film structure according to claim 1, characterized in that the first insulating sheet (21) and the second insulating sheet (22) are symmetrically arranged on both sides of the cover sheet patch (3).
3. The lithium battery external pack film structure according to claim 1, wherein the first insulating sheet (21), the second insulating sheet (22) and the third insulating sheet (23) each have a rectangular structure.
4. The lithium battery outer envelope structure of claim 1, wherein the positive opening and the negative opening are symmetrically disposed on both sides of the explosion-proof opening.
5. The lithium battery outer packaging film structure of claim 1, wherein the cover portion is further provided with a positioning opening (34).
6. A battery case structure, comprising: an aluminum housing (5), a cover plate (4) and a lithium battery outer envelope structure according to any of claims 1-4.
7. The battery case structure according to claim 6, wherein an explosion-proof valve (42), a positive post (41) and a negative post (43) are provided on the lid plate (4), a lid portion of the insulating base film (1) is covered on the lid plate (4), and the explosion-proof valve (42) is located in the explosion-proof opening, the negative post (43) is located in the negative opening, and the positive post (41) is located in the positive opening.
8. The battery case structure according to claim 7, wherein the first side portion, the second side portion, and the bottom portion are covered on both side covers and a bottom cover of the aluminum case (5), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733041.6U CN211045480U (en) | 2019-10-15 | 2019-10-15 | Lithium battery outer packaging film structure and battery case structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733041.6U CN211045480U (en) | 2019-10-15 | 2019-10-15 | Lithium battery outer packaging film structure and battery case structure |
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| CN211045480U true CN211045480U (en) | 2020-07-17 |
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| CN201921733041.6U Active CN211045480U (en) | 2019-10-15 | 2019-10-15 | Lithium battery outer packaging film structure and battery case structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103564A (en) * | 2020-09-22 | 2020-12-18 | 肖士章 | Lithium battery processing system |
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2019
- 2019-10-15 CN CN201921733041.6U patent/CN211045480U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103564A (en) * | 2020-09-22 | 2020-12-18 | 肖士章 | Lithium battery processing system |
| CN112103564B (en) * | 2020-09-22 | 2021-09-03 | 东莞市鑫晟达智能装备有限公司 | Lithium battery processing system |
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