CN216389540U - Lithium ion battery cover plate structure with anti-rotation pole - Google Patents
Lithium ion battery cover plate structure with anti-rotation pole Download PDFInfo
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- CN216389540U CN216389540U CN202122940985.4U CN202122940985U CN216389540U CN 216389540 U CN216389540 U CN 216389540U CN 202122940985 U CN202122940985 U CN 202122940985U CN 216389540 U CN216389540 U CN 216389540U
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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 relates to a lithium ion battery cover plate structure with an anti-rotation pole column, and belongs to the technical field of lithium ion batteries. The lithium battery cover plate comprises a cover plate sheet, wherein a positive electrode unit is arranged on one side of the cover plate sheet, and a negative electrode unit is arranged on the other side of the cover plate sheet; an explosion-proof valve unit is arranged between the positive electrode unit and the negative electrode unit, and a liquid injection hole is also formed in the outer side of the positive electrode unit; the positive electrode unit comprises positive electrode upper plastic, positive electrode lower plastic and a positive electrode pole, and the negative electrode unit comprises negative electrode upper plastic, negative electrode lower plastic and a negative electrode pole; the positive pole and the negative pole are both arranged in circular holes at two sides of the cover plate, and a plurality of anti-rotation grooves are arranged on the outer ring of the circular hole in a surrounding manner; straight grain knurling structures are additionally arranged on the surfaces of the middle grooves of the polar columns of the positive polar column and the negative polar column. The anti-rotation pole post is reasonable in structure and compact in fit, and can achieve a good anti-rotation effect.
Description
Technical Field
The utility model relates to a lithium ion battery cover plate structure with an anti-rotation pole column, and belongs to the technical field of lithium ion batteries.
Background
In the prior art, lithium ion batteries have the characteristics of high voltage, large specific energy, long cycle life, high safety and the like, and thus become a research hotspot which is widely concerned in recent years. Most of the current lithium ion battery cover plate pole columns are not provided with an anti-rotation mechanism, and the risk of rotation of the pole columns exists.
For example, chinese patent publication No. CN203103389U discloses a lithium ion battery post rotation-preventing mechanism, wherein the lithium ion battery post rotation-preventing mechanism is an insulating member, and the insulating member is disposed on a post base fixedly connected to a post and fixedly connected to an inner wall of a battery case of a lithium ion battery.
The insulation piece is arranged on the pole base and is fixedly connected with the inner wall of the battery shell of the lithium ion battery, so that the pole of the lithium ion battery can be effectively prevented from rotating; however, the insulation member is fixedly connected with the inner wall of the battery shell, so that the production process is more complicated and the preparation is inconvenient.
Therefore, in order to solve the above-mentioned background problems, it is urgent to develop a lithium ion battery cover plate structure with anti-rotation pole.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the background problem and provides a lithium ion battery cover plate structure with an anti-rotation pole, which is reasonable in structure and compact in fit and can enable the pole to achieve a good anti-rotation effect.
The purpose of the utility model is realized as follows: a lithium ion battery cover plate structure with an anti-rotation pole comprises a cover plate sheet, wherein a positive pole unit is arranged on one side of the cover plate sheet, and a negative pole unit is arranged on the other side of the cover plate sheet;
an explosion-proof valve unit is arranged between the positive electrode unit and the negative electrode unit, and a liquid injection hole is also formed in the outer side of the positive electrode unit;
the positive electrode unit comprises positive electrode upper plastic, positive electrode lower plastic and a positive electrode pole, and the negative electrode unit comprises negative electrode upper plastic, negative electrode lower plastic and a negative electrode pole;
the positive pole and the negative pole are both arranged in circular holes at two sides of the cover plate, and a plurality of anti-rotation grooves are arranged on the outer ring of the circular hole in a surrounding manner;
straight grain knurling structures are additionally arranged on the surfaces of the middle grooves of the polar columns of the positive polar column and the negative polar column.
The circular holes on the two sides of the cover plate sheet are respectively a positive electrode special-shaped hole and a negative electrode special-shaped hole;
and a liquid injection hole is formed on the outer side of the positive electrode special-shaped hole.
Sealing rings are arranged between the positive special-shaped hole and the positive electrode lower plastic and between the negative special-shaped hole and the negative electrode lower plastic.
The explosion-proof valve unit comprises an explosion-proof valve plate and an explosion-proof valve protection plate;
an explosion-proof valve hole is formed in the central position of the cover plate;
the lower end faces of the explosion-proof valve plate and the explosion-proof valve hole are connected and installed, and an explosion-proof valve protection sheet is arranged on the upper end face.
Compared with the prior art, the utility model has the following advantages:
according to the lithium ion battery cover plate structure with the anti-rotation pole, the outer rings of the anode special-shaped hole and the cathode special-shaped hole are provided with the plurality of anti-rotation grooves, so that the anti-rotation of plastic and an aluminum cover plate sheet on the pole is facilitated, and the straight grain embossing structures are additionally arranged on the surfaces of the middle grooves of the poles of the anode pole and the cathode pole in a matching manner, so that the plastic on the anode is more tightly connected with the pole, the anti-rotation of the pole is achieved, and therefore the lithium ion battery cover plate structure with the anti-rotation pole has a better anti-rotation effect, does not need to increase stations, and is low in processing cost.
Drawings
Fig. 1 is an explosion diagram of the overall structure of a lithium ion battery cover plate structure with anti-rotation posts according to the utility model.
Fig. 2 is a schematic upper end surface structure view of a lithium ion battery cover plate structure with anti-rotation posts according to the present invention.
Fig. 3 is a schematic view of a lower end surface structure of a lithium ion battery cover plate structure with anti-rotation posts according to the utility model.
Fig. 4 is a schematic diagram of a post structure of a lithium ion battery cover plate structure with a post rotation prevention structure according to the present invention.
Fig. 5 is a schematic structural diagram of an aluminum cover plate sheet of a lithium ion battery cover plate structure with anti-rotation poles according to the present invention.
Wherein: 1. plastic is coated on the positive electrode; 2. a cover sheet; 3. a liquid injection hole; 4. a seal ring; 5. plastic cement under the anode; 6. a positive pole column; 7. an explosion-proof valve plate; 8. an explosion-proof valve protection sheet; 9. plastic is coated on the negative electrode; 10. plastic under the negative electrode; 11. a negative electrode post; 12. a straight embossing structure;
100. an explosion-proof valve hole; 101. a positive electrode heteromorphic hole; 102. a cathode special-shaped hole.
Detailed Description
The utility model is described below with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1 to 5, a lithium ion battery cover plate structure with anti-rotation pole posts comprises a cover plate sheet 2, wherein one side of the cover plate sheet 2 is provided with a positive pole unit, and the other side is provided with a negative pole unit;
an explosion-proof valve unit is arranged between the positive electrode unit and the negative electrode unit, and a liquid injection hole 3 is also arranged on the outer side of the positive electrode unit;
the anode unit comprises an anode upper plastic 1, an anode lower plastic 5 and an anode pole 6, and the cathode unit comprises a cathode upper plastic 9, a cathode lower plastic 10 and a cathode pole 11;
the positive pole post 6 and the negative pole post 11 are both arranged in circular holes at two sides of the cover plate piece 2, and a plurality of anti-rotation grooves are arranged on the outer ring of the circular holes in a surrounding manner;
straight grain knurling structures 12 are additionally arranged on the surfaces of the middle grooves of the positive pole post 6 and the negative pole post 11.
The round holes on the two sides of the cover plate piece 2 are respectively a positive electrode special-shaped hole 101 and a negative electrode special-shaped hole 102;
and a liquid injection hole 3 is arranged outside the positive electrode special-shaped hole 101.
And sealing rings 4 are arranged between the anode special-shaped hole 101 and the anode lower plastic 5 and between the cathode special-shaped hole 102 and the cathode lower plastic 10.
The explosion-proof valve unit comprises an explosion-proof valve plate 7 and an explosion-proof valve protection plate 8;
an explosion-proof valve hole 100 is formed in the central position of the cover plate piece 2;
the lower end faces of the explosion-proof valve plate 7 and the explosion-proof valve hole 100 are connected and installed, and the upper end face is provided with an explosion-proof valve protection plate 8.
In the embodiment, the cover plate 2 of the lithium ion battery cover plate structure with the anti-rotation pole is a member made of aluminum material through stamping, and the aluminum material has the advantages of strong plasticity, good electrical and thermal conductivity and light weight.
In this embodiment, in the lithium ion battery cover plate structure with the anti-rotation post, the anti-explosion valve plate 7 is connected to the lower end face of the anti-explosion valve hole 100 by laser welding.
In this embodiment, in the lithium ion battery cover plate structure with the anti-rotation post, the lower plastic 5 of the positive electrode and the lower plastic 10 of the negative electrode both use PP materials, the upper plastic 1 of the positive electrode uses conductive PPs material, and the upper plastic 9 of the negative electrode uses insulating PPs material, so that the lithium ion battery cover plate structure has good insulation, high temperature resistance and corrosion resistance.
In the embodiment, the sealing ring 4 of the lithium ion battery cover plate structure with the anti-rotation pole column is made of the fluororubber, and the fluororubber has the advantages of high elasticity and large deformation under small acting force, and has good sealing property.
In the embodiment, according to the lithium ion battery cover plate structure with the anti-rotation pole, the positive pole 6 is made of aluminum material, the negative pole 11 is made of copper-aluminum composite material, and the straight-grain embossing structures 12 are additionally arranged on the surfaces of the middle grooves of the poles of the positive pole 6 and the negative pole 11, so that plastic on the negative pole is more tightly connected with the poles, and the anti-rotation of the poles is achieved.
In this embodiment, the assembly process of the lithium ion battery cover plate structure with the anti-rotation pole column of the utility model is as follows:
the method comprises the following steps: the lower end face of the explosion-proof valve hole 100 of the aluminum cover plate piece 2 is welded with the explosion-proof valve plate 7 by laser, and the explosion-proof valve protection piece 8 is attached;
step two: the anode pole 6 sequentially passes through the anode lower plastic 5, the sealing ring 4 and the anode special-shaped hole 101 and is coaxial with the anode lower plastic 5;
step three: the cathode pole 11 sequentially passes through the cathode lower plastic 10, the sealing ring 4 and the anode special-shaped hole 102 and is coaxial with the cathode lower plastic 10, the sealing ring and the anode special-shaped hole;
step four: and performing injection molding and encapsulation on the plastic 1 on the positive electrode and the plastic 9 on the negative electrode.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a lithium ion battery cover plate structure that utmost point post prevented changeing which characterized in that: the battery cover plate comprises a cover plate sheet (2), wherein one side of the cover plate sheet (2) is provided with a positive electrode unit, and the other side of the cover plate sheet is provided with a negative electrode unit;
an explosion-proof valve unit is arranged between the positive electrode unit and the negative electrode unit, and a liquid injection hole (3) is also arranged on the outer side of the positive electrode unit;
the anode unit comprises an anode upper plastic (1), an anode lower plastic (5) and an anode pole (6), and the cathode unit comprises a cathode upper plastic (9), a cathode lower plastic (10) and a cathode pole (11);
the positive pole post (6) and the negative pole post (11) are both arranged in circular holes at two sides of the cover plate piece (2), and a plurality of anti-rotation grooves are arranged on the outer ring of the circular holes in a surrounding manner;
straight grain knurling structures (12) are additionally arranged on the surfaces of the middle grooves of the positive pole post (6) and the negative pole post (11).
2. The lithium ion battery cover plate structure with the anti-rotation pole column according to claim 1, is characterized in that: round holes on two sides of the cover plate piece (2) are respectively a positive electrode special-shaped hole (101) and a negative electrode special-shaped hole (102);
and a liquid injection hole (3) is formed outside the positive electrode special-shaped hole (101).
3. The lithium ion battery cover plate structure with the anti-rotation pole column according to claim 2, is characterized in that: and sealing rings (4) are arranged between the anode special-shaped hole (101) and the anode lower plastic (5) and between the cathode special-shaped hole (102) and the cathode lower plastic (10).
4. The lithium ion battery cover plate structure with the anti-rotation pole column according to claim 1, is characterized in that: the explosion-proof valve unit comprises an explosion-proof valve plate (7) and an explosion-proof valve protection plate (8);
an explosion-proof valve hole (100) is formed in the central position of the cover plate piece (2);
the lower end face of the explosion-proof valve plate (7) and the lower end face of the explosion-proof valve hole (100) are connected and installed, and an explosion-proof valve protection plate (8) is arranged on the upper end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940985.4U CN216389540U (en) | 2021-11-29 | 2021-11-29 | Lithium ion battery cover plate structure with anti-rotation pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122940985.4U CN216389540U (en) | 2021-11-29 | 2021-11-29 | Lithium ion battery cover plate structure with anti-rotation pole |
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| Publication Number | Publication Date |
|---|---|
| CN216389540U true CN216389540U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122940985.4U Active CN216389540U (en) | 2021-11-29 | 2021-11-29 | Lithium ion battery cover plate structure with anti-rotation pole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087376A1 (en) * | 2022-10-28 | 2024-05-02 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric apparatus |
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2021
- 2021-11-29 CN CN202122940985.4U patent/CN216389540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087376A1 (en) * | 2022-10-28 | 2024-05-02 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric apparatus |
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