CN212461839U - Power battery top cover plate assembly - Google Patents
Power battery top cover plate assembly Download PDFInfo
- Publication number
- CN212461839U CN212461839U CN202021054834.8U CN202021054834U CN212461839U CN 212461839 U CN212461839 U CN 212461839U CN 202021054834 U CN202021054834 U CN 202021054834U CN 212461839 U CN212461839 U CN 212461839U
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- CN
- China
- Prior art keywords
- pole
- post
- plastic part
- cover plate
- top cover
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- 239000004033 plastic Substances 0.000 claims abstract description 81
- 229920003023 plastic Polymers 0.000 claims abstract description 81
- 239000002131 composite material Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a power battery top cap board subassembly, including the top cap piece, the anodal post, negative pole composite post and lower plastic, the symmetry is provided with two utmost point post mounting holes on the top cap piece, the anodal post, negative pole composite post installs respectively in two utmost point post mounting holes, the explosion-proof hole of type structure is seted up at the middle part of top cap piece, the top cap piece tip that is close to negative pole nanometer plastic part one side has been seted up and has been annotated the liquid hole, be provided with the explosion-proof piece in the bottom cavity in explosion-proof hole, the plastic sets up in the top cap piece below down, and be formed with respectively on the plastic down with utmost point post mounting hole, annotate the opening that the liquid hole corresponds, the middle part downwardly extending of plastic forms the notch under, the bottom of. The utility model discloses the structure is comparatively simple, and convenient manufacturing and manufacturing yield are higher, very big reduction in production manufacturing cost.
Description
Technical Field
The utility model relates to a power battery top cap board subassembly belongs to power battery apron field.
Background
The structure of the conventional power battery cover plate is formed by riveting or injection molding of a pole, and in the manufacturing process of the cover plate, multiple components are required to be molded, so that the manufacturing process is complex, the manufacturing cost is high, and the internal space of the battery is occupied greatly. Under the background, the cover plate is a place which is in urgent need of improvement on the cover plate of the existing automobile power battery, and has the advantages of simplifying the manufacturing process, reducing the manufacturing cost, increasing the internal space of the battery, improving the energy density and lightening the cover plate.
Disclosure of Invention
For solving the not enough of prior art, the utility model provides a power battery roof board subassembly, the structure is comparatively simple, and convenient manufacturing and manufacturing yield are higher, very big reduction in production manufacturing cost.
The utility model discloses the technical scheme who adopts does:
a power battery top cover plate assembly comprises a top cover plate, a positive pole, a negative pole composite pole and lower plastic, wherein two pole mounting holes are symmetrically formed in the top cover plate, the positive pole and the negative pole composite pole are respectively mounted in the two pole mounting holes, an explosion-proof hole with a convex structure is formed in the middle of the top cover plate, a liquid injection hole is formed in the end part of the top cover plate close to one side of a negative pole nanometer plastic part, an explosion-proof plate is arranged in a bottom cavity of the explosion-proof hole, the lower plastic is arranged below the top cover plate, openings corresponding to the pole mounting holes and the liquid injection hole are formed in the lower plastic, a notch is formed in the middle of the lower plastic in a downward extending mode, and a plurality of through holes are formed in the; the positive pole column and the negative pole composite pole column are both of hollow square structures, the tops of the positive pole column and the negative pole composite pole column of the hollow square structures extend upwards to form annular bosses, the positive pole column is made of aluminum, the upper half part of the negative pole composite pole column is made of aluminum, and the lower half part of the negative pole composite pole column is made of copper.
Preferably, the positive pole column and the negative pole composite pole column are respectively injected into the corresponding pole column mounting holes through a nano injection molding process, and a positive nano plastic part and a negative nano plastic part are formed between the positive pole column and the corresponding pole column mounting hole and between the negative pole composite pole column and the corresponding pole column mounting hole.
Preferably, the positive electrode nano plastic part and the negative electrode nano plastic part are of square structures with open bottoms, the positive electrode post and the negative electrode composite post are respectively and correspondingly arranged inside the square structures of the positive electrode nano plastic part and the negative electrode nano plastic part, openings corresponding to the annular bosses are formed in the tops of the square structures of the positive electrode nano plastic part and the negative electrode nano plastic part, the middle parts of the square structures of the positive electrode nano plastic part and the negative electrode nano plastic part are inwards shrunk to form an inwards-recessed snap ring, and the positive electrode nano plastic part and the negative electrode nano plastic part are sealed and fixed with the post mounting hole in the top cover plate through the inwards-recessed snap ring.
Further preferably, buckles are symmetrically arranged below two sides of the opening corresponding to the pole mounting hole on the lower plastic, clamping grooves corresponding to the buckles are formed in square structures of the anode nano plastic part and the cathode nano plastic part, and the lower plastic is buckled in the clamping grooves on the anode nano plastic part and the cathode nano plastic part through the buckles and then is in sealing connection.
Preferably, a first tooth-shaped structure is formed at the bottom of the upper half part of the aluminum negative electrode composite pole, a second tooth-shaped structure matched with the first tooth-shaped structure formed at the bottom of the upper half part is formed at the top of the lower half part of the copper negative electrode composite pole, and the first tooth-shaped structure and the lower half part of the negative electrode composite pole are matched and connected with the second tooth-shaped structure through the first tooth-shaped structure.
The beneficial effects of the utility model reside in that:
1. the positive pole column and the negative pole composite pole column which are of a hollow square structure are adopted, and the positive pole column and the negative pole composite pole column are processed by hardware punching instead of the traditional automatic lathe processing, so that the process is simple in structure and convenient to process, the use of materials is reduced for the pole column with the hollow structure, and the manufacturing cost of the whole power battery cover plate assembly is reduced by more than 35%;
2. the pole and the cathode composite pole are injected into the pole mounting hole of the top cover plate through a nano injection molding process, so that the pole and the cathode composite pole are tightly connected, a common sealing ring is omitted, and the sealing performance of the whole power battery cover plate assembly is effectively guaranteed.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a bottom view of the lower plastic;
FIG. 4 is a schematic structural view of a cathode composite post;
the main reference numerals in the figures have the following meanings:
1. anodal nanometer plastic part, 2, negative pole nanometer plastic part, 3, top cap piece, 4, positive post, 5, explosion-proof piece, 6, negative pole composite post, 7, lower plastic, 8, post mounting hole, 9, explosion-proof hole, 10, notes liquid hole, 11, buckle.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-4: the embodiment is a power battery top cover plate assembly, which comprises a top cover plate 3, an anode post 4, a cathode composite post 6 and lower plastic 7, wherein the top cover plate 3 is symmetrically provided with two post mounting holes 8, the anode post 4 and the cathode composite post 6 are respectively mounted in the two post mounting holes 8, the middle part of the top cover plate 3 is provided with an explosion-proof hole 9 with a convex structure, the end part of the top cover plate 3 close to one side of a cathode nano plastic part 2 is provided with a liquid injection hole 10, a bottom cavity of the explosion-proof hole 9 is internally provided with an explosion-proof sheet 5, the lower plastic 7 is arranged below the top cover plate 3, the lower plastic 7 is provided with openings respectively corresponding to the post mounting holes 8 and the liquid injection hole 10, the middle part of the lower plastic 7 extends downwards to form a notch, and the bottom of the notch is provided with a plurality of through; the positive pole column 4 and the negative pole composite pole column 6 are both in a hollow square structure, the tops of the positive pole column 4 and the negative pole composite pole column 6 of the hollow square structure extend upwards to form annular bosses, the positive pole column 4 is made of aluminum, the upper half part of the negative pole composite pole column 6 is made of aluminum, and the lower half part of the negative pole composite pole column 6 is made of copper.
Referring to fig. 1 and 2, the positive pole post 4 and the negative pole composite pole post 6 are respectively injected into the corresponding pole post mounting holes 8 through a nano injection molding process, and a positive pole nano plastic part 1 and a negative pole nano plastic part 2 are formed between the positive pole post 4 and the corresponding pole post mounting hole 8, and between the negative pole composite pole post 6 and the corresponding pole post mounting hole 8.
Referring to fig. 1 and 2, the positive electrode nano plastic part 1 and the negative electrode nano plastic part 2 are both square structures with open bottoms, the positive electrode column 4 and the negative electrode composite terminal column 6 are respectively and correspondingly arranged inside the square structures of the positive electrode nano plastic part 1 and the negative electrode nano plastic part 2, openings corresponding to the annular bosses are formed at the tops of the square structures of the positive electrode nano plastic part 1 and the negative electrode nano plastic part 2, the middle parts of the square structures of the positive electrode nano plastic part 1 and the negative electrode nano plastic part 2 are inwards shrunk to form an inwards-recessed snap ring, and the positive electrode nano plastic part 1 and the negative electrode nano plastic part 2 are sealed and fixed with the terminal mounting hole 8 on the top cover plate 3 through the inwards-recessed snap ring.
Referring to fig. 2 and 3, buckles 11 are symmetrically arranged below two sides of an opening corresponding to the pole mounting hole 8 on the lower plastic 7, clamping grooves corresponding to the buckles 11 are formed on the square structures of the anode nano plastic part 1 and the cathode nano plastic part 2, and the lower plastic 7 is buckled in the clamping grooves on the anode nano plastic part 1 and the cathode nano plastic part 2 through the buckles 11 and then is in sealing connection.
Referring to fig. 4, a first tooth-shaped structure is formed at the bottom of the upper half portion of the aluminum negative electrode composite post 6, a second tooth-shaped structure matched with the first tooth-shaped structure formed at the bottom of the upper half portion is formed at the top of the lower half portion of the copper negative electrode composite post 6, and the upper half portion and the lower half portion of the negative electrode composite post 6 are matched and connected with the second tooth-shaped structure through the first tooth-shaped structure.
The nano injection molding process comprises the following steps:
step 1, carrying out chemical treatment on the surfaces of the top cover plate 3, the positive pole post 4 and the negative pole composite pole 6 to form a plurality of micropores on the surfaces of the top cover plate 3, the positive pole post 4 and the negative pole composite pole 6;
step 2: after the top cover plate 3 is placed in the lower die, the positive pole post 4 and the negative pole composite pole post 6 are placed in the corresponding pole post mounting hole 8, then the upper die and the lower die are closed, then the nano plastic is melted and injected into the die after closing, and nano particles in the nano plastic penetrate into surface micro holes formed by chemical treatment of the top cover plate 3, the positive pole post 4 and the negative pole composite pole post 6, so that the nano plastic is tightly combined with the metal surface, and sealing is realized.
The utility model adopts the positive pole post 4 and the negative pole composite pole post 6 which are of hollow square structures, and the positive pole post 4 and the negative pole composite pole post 6 are processed by hardware punching, which replaces the former automatic lathe processing, and the process has simple structure and convenient processing; most of the existing pole columns are of solid structures, while the pole columns of hollow structures remarkably reduce the use of materials, and the manufacturing cost of the whole power battery cover plate component is reduced by more than 35% while the normal operation of the battery is ensured; the positive pole 4 is made of a pure aluminum plate, and the negative pole composite pole 6 is made of a copper-aluminum composite plate to realize copper-aluminum switching; and positive post 4 and negative pole compound utmost point post 6 are all moulded plastics to the utmost point post mounting hole 8 of top cap piece 3 through nanometer injection molding process in, and the nano particles among the nanometer plastics permeate in the surface micropore that top cap piece 3, positive post 4, negative pole compound utmost point post 6 chemical treatment formed, make nanometer plastics and metal surface combine closely, realize sealedly to the sealing washer commonly used in the top cap board subassembly has been saved, the subassembly of further simplified top cap board is constituteed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A power battery roof plate assembly characterized in that: comprises a top cover plate (3), an anode post (4), a cathode composite post (6) and lower plastic (7), two pole mounting holes (8) are symmetrically arranged on the top cover plate (3), the positive pole (4) and the negative pole composite pole (6) are respectively mounted in the two pole mounting holes (8), the middle part of the top cover plate (3) is provided with an explosion-proof hole (9) with a convex structure, a liquid injection hole (10) is arranged at the end part of the top cover sheet (3) close to one side of the cathode nano plastic piece (2), an explosion-proof sheet (5) is arranged in the bottom cavity of the explosion-proof hole (9), the lower plastic (7) is arranged below the top cover plate (3), and openings corresponding to the pole mounting hole (8) and the liquid injection hole (10) are formed on the lower plastic (7), the middle part of the lower plastic (7) extends downwards to form a notch, and the bottom of the notch is provided with a plurality of through holes; the positive pole column (4) and the negative pole composite pole column (6) are both of a hollow square structure, the tops of the positive pole column (4) and the negative pole composite pole column (6) of the hollow square structure extend upwards to form an annular boss, the positive pole column (4) is made of aluminum, the upper half part of the negative pole composite pole column (6) is made of aluminum, and the lower half part of the negative pole composite pole column (6) is made of copper.
2. The power battery top cover plate assembly according to claim 1, wherein the positive pole post (4) and the negative pole composite pole post (6) are respectively injected into the corresponding pole post mounting holes (8) through a nano injection molding process, and a positive pole nano plastic part (1) and a negative pole nano plastic part (2) are formed between the positive pole post (4) and the corresponding pole post mounting hole (8), between the negative pole composite pole post (6) and the corresponding pole post mounting hole (8).
3. The top cover plate assembly of power battery as claimed in claim 2, wherein the positive electrode nanoplastic member (1) and the negative electrode nanoplastic member (2) are both square structures with open bottoms, the positive pole column (4) and the negative pole composite pole column (6) are respectively and correspondingly arranged inside the square structures of the positive pole nanometer plastic part (1) and the negative pole nanometer plastic part (2), openings corresponding to the annular bosses are formed at the tops of the square structures of the anode nano plastic part (1) and the cathode nano plastic part (2), the middle parts of the square structures of the anode nano plastic part (1) and the cathode nano plastic part (2) are inwards shrunk to form an inwards-sunk snap ring, the positive electrode nano plastic part (1) and the negative electrode nano plastic part (2) are sealed and fixed with the pole mounting hole (8) on the top cover plate (3) through the invaginated snap ring.
4. The power battery top cover plate assembly according to claim 3, wherein buckles (11) are symmetrically arranged below two sides of an opening corresponding to the pole mounting hole (8) on the lower plastic (7), clamping grooves corresponding to the buckles (11) are formed on square structures of the anode nano plastic part (1) and the cathode nano plastic part (2), and the lower plastic (7) is buckled into the clamping grooves on the anode nano plastic part (1) and the cathode nano plastic part (2) through the buckles (11) to be in sealing connection.
5. The power battery top cover plate assembly according to claim 1, wherein a first tooth-shaped structure is formed at the bottom of the upper half portion of the aluminum negative electrode composite pole (6), a second tooth-shaped structure matched with the first tooth-shaped structure formed at the bottom of the upper half portion is formed at the top of the lower half portion of the copper negative electrode composite pole (6), and the upper half portion and the lower half portion of the negative electrode composite pole (6) are connected with the second tooth-shaped structure through the first tooth-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021054834.8U CN212461839U (en) | 2020-06-10 | 2020-06-10 | Power battery top cover plate assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021054834.8U CN212461839U (en) | 2020-06-10 | 2020-06-10 | Power battery top cover plate assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212461839U true CN212461839U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021054834.8U Active CN212461839U (en) | 2020-06-10 | 2020-06-10 | Power battery top cover plate assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212461839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725444A (en) * | 2020-06-10 | 2020-09-29 | 靖江市东达新能源科技有限公司 | Power battery top cover plate assembly |
| CN116111290A (en) * | 2023-03-01 | 2023-05-12 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
-
2020
- 2020-06-10 CN CN202021054834.8U patent/CN212461839U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725444A (en) * | 2020-06-10 | 2020-09-29 | 靖江市东达新能源科技有限公司 | Power battery top cover plate assembly |
| CN116111290A (en) * | 2023-03-01 | 2023-05-12 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
| CN116111290B (en) * | 2023-03-01 | 2023-10-13 | 温州宏丰电工合金股份有限公司 | Copper-aluminum composite pole assembly, preparation method thereof and battery |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231230 Address after: No. 99 Xinghua 9th Road, Yongshang Town, Xinjin District, Chengdu City, Sichuan Province (Industrial Park) Patentee after: Sichuan Xindongheng New Material Technology Co.,Ltd. Address before: 214500 No.18, qiweigang West Road, Jingjiang City, Taizhou City, Jiangsu Province Patentee before: Jingjiang East Amperex Technology Ltd. |