CN219717043U - Battery cover plate with good insulation structure - Google Patents
Battery cover plate with good insulation structure Download PDFInfo
- Publication number
- CN219717043U CN219717043U CN202320912866.4U CN202320912866U CN219717043U CN 219717043 U CN219717043 U CN 219717043U CN 202320912866 U CN202320912866 U CN 202320912866U CN 219717043 U CN219717043 U CN 219717043U
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- Prior art keywords
- hole
- cover plate
- battery cover
- negative electrode
- positive
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- 238000009413 insulation Methods 0.000 title claims abstract description 39
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 238000004880 explosion Methods 0.000 claims 2
- 238000009421 internal insulation Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 210000001503 joint Anatomy 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a battery cover plate with a good insulation structure, which comprises a top plate, an insulation bottom shell, an anode contact part, a cathode contact part and an insulation base, wherein the investment of the sealing ring is reduced on the basis of the structure of a traditional insulation pad (namely the insulation base) and the sealing ring, the investment cost of parts of the battery cover plate is reduced, the internal insulation structure of the battery cover plate is optimized, the investment of the parts is reduced, and the bottom end surface of the insulation base is provided with a downward protruding isolation sleeve which is respectively sleeved at the middle parts of the anode contact part and the cathode contact part and is inserted between the anode contact part and the cathode contact part and a first inserting hole, so that a good insulation isolation structure is formed between the middle parts of the anode contact part and the cathode contact part and the top plate, and the original insulation short-circuit prevention efficiency of the battery cover plate is ensured.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a battery cover plate with a good insulation structure.
Background
The top of the power battery is generally provided with a battery cover plate which comprises a cover plate body (i.e. a top plate), and lower plastic, a switching piece and a pole column which are arranged on the cover plate body (i.e. the top plate). The power battery is used as a main component of an automobile power source, the safety performance of a battery cover plate mainly used for circuit connection is extremely important, and because the top plate is generally made of a metal material with high rigidity, insulation treatment is required to be carried out between the top plate and the positive electrode contact part and between the top plate and the negative electrode contact part through an insulation structure, so that the phenomenon of short circuit between the positive electrode contact part and the negative electrode contact part through the top plate is prevented.
According to the structure of the battery cover plate in the prior art, a specific Chinese patent with reference publication number of CN218788488U discloses a multipolar lug cover plate of a sodium ion battery, and discloses that an insulating pad (namely an insulating base) is sleeved on each of a positive flat head rivet and a negative flat head rivet, and a positive pressing plate and a negative pressing plate of a sealing ring are respectively arranged in respective electrode through holes, so that the positive flat head rivet and the negative flat head rivet respectively form an insulating structure with a cover plate main body (namely a top plate), and have good insulating and short-circuit preventing effects.
However, with the development of electric vehicles, the demand of batteries in the market is increasing with the promotion of policies. In recent years, various battery factories are continuously expanded to meet market demands and occupy the market. The power battery occupies most of the cost of the electric automobile, and as the demand increases, the cost of the battery is more and more emphasized by enterprises, and the cost reduction work is continuously performed.
Therefore, there is a need for a battery cover plate having a good insulation structure to solve the above problems.
Disclosure of Invention
The utility model aims to provide a battery cover plate with a good insulation structure, which aims to better solve the technical problems of optimizing the internal insulation structure of the battery cover plate, ensuring the internal insulation short-circuit prevention efficiency of the battery cover plate on the premise of reducing insulation parts, and reducing the cost.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a battery cover plate having a good insulating structure, comprising:
the two ends of the top plate are respectively provided with a first plug hole;
the two ends of the insulating base are respectively provided with a second plug hole;
the positive electrode contact part is arranged at one end of the top plate and one end of the insulating bottom shell, and the top of the positive electrode contact part sequentially penetrates through the first plug hole and the second plug hole to extend to the top end surface of the top plate;
the negative electrode contact part is arranged at the other ends of the top plate and the insulating bottom shell, and the top of the negative electrode contact part sequentially penetrates through the first plug hole and the second plug hole and extends to the top end surface of the top plate;
the insulating base, the middle part of insulating base has been seted up and has been cup jointed the hole, and insulating base's bottom surface is equipped with the spacer sleeve that protrudes downwards, is concentric circle structure between spacer sleeve and the cup joint hole, and spacer sleeve cup joints respectively at the middle part of anodal contact and negative pole contact, and spacer sleeve peg graft between anodal contact and negative pole contact and first spliced eye.
In the above description, as a further scheme, the positive electrode contact portion includes positive electrode conductive block and positive electrode flat head rivet, and the top of positive electrode flat head rivet passes first spliced eye and second spliced eye in proper order and extends to the top face of roof, and the bottom of positive electrode conductive block is inlayed in insulating base, and the top of positive electrode flat head rivet cup joints fixedly with the middle part of positive electrode conductive block.
In the above description, as a further scheme, the negative electrode contact portion includes negative electrode conductive block and negative electrode flat head rivet, and the top of negative electrode flat head rivet passes first spliced eye and second spliced eye in proper order and extends to the top face of roof, and the bottom of negative electrode conductive block is inlayed in insulating base, and the top of negative electrode flat head rivet cup joints fixedly with the middle part of negative electrode conductive block.
In the above description, as a further scheme, the top of the positive flat head rivet is an upward protruding positive pole portion, the bottom of the positive flat head rivet is a positive pole limiting portion, when the positive pole portion passes through the first plug hole and the second plug hole and extends to the top end surface of the top plate, the positive pole portion is plugged inside the isolation sleeve, and the top end surface of the positive pole limiting portion is abutted with the bottom end surface of the insulating bottom shell.
In the above description, as a further scheme, the top of the negative electrode flat head rivet is an upward protruding negative electrode column part, the bottom of the negative electrode flat head rivet is a negative electrode limit part, when the negative electrode column part passes through the first plug hole and the second plug hole and extends to the top end surface of the top plate, the negative electrode column part is plugged in the isolation sleeve, and the top end surface of the negative electrode limit part is in butt joint with the bottom end surface of the insulating bottom shell.
In the above description, as a further scheme, the middle part of the insulating bottom shell is provided with the exhaust grille, the middle part of the top plate is provided with the through hole, the through hole is positioned above the exhaust grille, the inside of the through hole is provided with the explosion-proof sheet, and the explosion-proof sheet covers the upper part of the exhaust grille.
In the above description, as a further scheme, the middle parts of the top plate and the insulating bottom shell are respectively provided with a first liquid injection hole and a second liquid injection hole, the first liquid injection hole is positioned above the second liquid injection hole, the top of the top plate is provided with a sealing nail, and the bottoms of the sealing nails are inserted into the first liquid injection hole and the second liquid injection hole.
Compared with the prior art, the utility model has the beneficial effects that:
according to the battery cover plate with the good insulation structure, the downward protruding isolation sleeve is arranged on the bottom end surface of the insulation base and is sleeved at the middle parts of the positive electrode contact part and the negative electrode contact part respectively, and the isolation sleeve is inserted between the positive electrode contact part and the negative electrode contact part and the first insertion hole, so that the good insulation isolation structure is formed between the middle parts of the positive electrode contact part and the negative electrode contact part and the top plate, and the original insulation short-circuit prevention effect of the battery cover plate is ensured;
meanwhile, the input cost of parts of the battery cover plate is reduced, the input of the sealing ring is reduced on the basis of the structure of the traditional insulating pad (namely the insulating base) and the sealing ring, the input cost of the parts of the battery cover plate is reduced, the internal insulating structure of the battery cover plate is optimized, the input of the parts is reduced, and the assembly process of the battery cover plate is simplified.
Drawings
Fig. 1 is a schematic perspective view of a battery cover plate with a good insulation structure according to the present utility model;
FIG. 2 is an exploded view of a battery cover plate with good insulation structure according to the present utility model;
FIG. 3 is a schematic cross-sectional view of a battery cover plate with good insulation structure according to the present utility model;
FIG. 4 is a schematic view of the structure of FIG. 3A in a partially enlarged manner;
FIG. 5 is a schematic view of an insulating base in a battery cover plate with a good insulating structure according to the present utility model;
in the figure: the novel solar energy battery comprises a top plate, a first liquid injection hole, a first plug hole, a first through hole, a 13-through hole, a 2-insulating bottom shell, a second liquid injection hole, a second plug hole, a 23-exhaust grid, a 3-positive electrode contact portion, a 31-positive electrode conductive block, a 32-positive electrode flat head rivet, a 321-positive electrode column portion, a 322-positive electrode limit portion, a 4-negative electrode contact portion, a 41-negative electrode conductive block, a 42-negative electrode flat head rivet, a 421-negative electrode column portion, a 422-negative electrode limit portion, a 5-sealing nail, a 6-explosion-proof sheet, a 7-insulating base, a 71-sleeve joint hole and a 72-isolation sleeve.
Detailed Description
The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model. The present utility model will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-5, a battery cover plate with a good insulation structure in a specific implementation manner includes a top plate 1, an insulation bottom shell 2, a positive electrode contact portion 3, a negative electrode contact portion 4 and an insulation base 7, wherein two ends of the top plate 1 are respectively provided with a first plug hole 12, two ends of the insulation base 7 are respectively provided with a second plug hole 22, the positive electrode contact portion 3 is arranged at one end of the top plate 1 and one end of the insulation bottom shell 2, the top of the positive electrode contact portion 3 sequentially passes through the first plug hole 12 and the second plug hole 22 to extend to the top end surface of the top plate 1, the negative electrode contact portion 4 is arranged at the other end of the top plate 1 and the insulation bottom shell 2, and the top of the negative electrode contact portion 4 sequentially passes through the first plug hole 12 and the second plug hole 22 to extend to the top end surface of the top plate 1;
the middle part of insulating base 7 has seted up cup joints hole 71, and insulating base 7's bottom face is equipped with the spacer sleeve 72 that protrudes downwards, is concentric circle structure between spacer sleeve 72 and the cup joints hole 71, and spacer sleeve 72 cup joints the middle part at positive electrode contact 3 and negative electrode contact 4 respectively, and spacer sleeve 72 peg graft between positive electrode contact 3 and negative electrode contact 4 and first spliced eye 12. The device has the advantages that the input use of the traditional sealing ring can be reduced, the input cost of parts of the battery cover plate is reduced, the internal insulation structure of the battery cover plate is optimized, meanwhile, a good insulation isolation structure is formed between the middle parts of the positive electrode contact part 3 and the negative electrode contact part 4 and the top plate 1, and the original insulation short-circuit prevention effect of the battery cover plate is ensured.
The positive electrode contact part 3 comprises a positive electrode conductive block 31 and a positive electrode flat head rivet 32, the top of the positive electrode flat head rivet 32 sequentially penetrates through the first plug hole 12 and the second plug hole 22 to extend to the top end face of the top plate 1, the bottom of the positive electrode conductive block 31 is embedded in the insulating base 7, and the top of the positive electrode flat head rivet 32 is sleeved and fixed with the middle of the positive electrode conductive block 31. The positive electrode conductive block 31 is used as a contact for mainly connecting an external circuit, the bottom end surface of the positive electrode conductive block 31 is inlaid in the insulating base 7 to form a good cladding insulating structure with the top plate 1, and then the positive electrode flat head rivet 32 is downwards led to a battery core at the bottom of the battery cover plate, so that the effect of circuit conduction is realized.
The top of the positive flat head rivet 32 is a positive pole portion 321 protruding upwards, the bottom of the positive flat head rivet 32 is a positive pole limiting portion 322, when the positive pole portion 321 penetrates through the first plug hole 12 and the second plug hole 22 to extend to the top end face of the top plate 1, the positive pole portion 321 is plugged into the spacer sleeve 72, and the top end face of the positive pole limiting portion 322 is abutted with the bottom end face of the insulating bottom shell 2. The positive pole portion 321 and the insertion connection are arranged in the isolation sleeve 72, so that a structure is formed that a path of the positive flat head rivet 32, which is led downwards to the battery core at the bottom of the battery cover plate, is isolated from the top plate 1, and the insulation effect between the positive flat head rivet 32 and the top plate 1 is further improved.
The negative electrode contact part 4 comprises a negative electrode conductive block 41 and a negative electrode flat head rivet 42, wherein the top of the negative electrode flat head rivet 42 sequentially penetrates through the first plug hole 12 and the second plug hole 22 to extend to the top end surface of the top plate 1, the bottom of the negative electrode conductive block 41 is embedded in the insulating base 7, and the top of the negative electrode flat head rivet 42 is sleeved and fixed with the middle of the negative electrode conductive block 41. The negative electrode conductive block 41 is used as a contact for mainly connecting an external circuit, the bottom end surface of the negative electrode conductive block 41 is inlaid in the insulating base 7 to form a good cladding insulating structure with the top plate 1, and then the negative electrode conductive block is downwards led to a battery core at the bottom of the battery cover plate through the negative electrode flat head rivet 42, so that the effect of circuit conduction is realized.
The top of the negative flat head rivet 42 is a negative pole column part 421 protruding upwards, the bottom of the negative flat head rivet 42 is a negative pole limiting part 422, when the negative pole column part 421 passes through the first plug hole 12 and the second plug hole 22 to extend to the top end surface of the top plate 1, the negative pole column part 421 is plugged inside the isolation sleeve 72, and the top end surface of the negative pole limiting part 422 is abutted with the bottom end surface of the insulating bottom shell 2. The negative electrode column 421 and the negative electrode flat rivet 42 are inserted into the isolation sleeve 72, so that a structure is formed in which a path of the negative electrode flat rivet 42, which is led downwards to the battery core at the bottom of the battery cover plate, is isolated from the top plate 1, and the insulation effect between the negative electrode flat rivet 42 and the top plate 1 is further improved.
An exhaust grating 23 is arranged in the middle of the insulating bottom shell 2, a through hole 13 is arranged in the middle of the top plate 1, the through hole 13 is positioned above the exhaust grating 23, an explosion-proof sheet 6 is arranged in the through hole 13, and the explosion-proof sheet 6 covers the upper part of the exhaust grating 23.
The middle parts of the top plate 1 and the insulating bottom shell 2 are respectively provided with a first liquid injection hole 11 and a second liquid injection hole 21, the first liquid injection hole 11 is positioned above the second liquid injection hole 21, the top of the top plate 1 is provided with a sealing nail 5, and the bottom of the sealing nail 5 is inserted into the first liquid injection hole 11 and the second liquid injection hole 21. In the process of battery production, electrolyte injection reaction is required to be carried out into the battery cell through the first liquid injection hole 11 and the second liquid injection hole 21; wherein, seal nail 5's effect is main electric core annotate behind the liquid and seal first notes liquid hole 11 and second notes liquid hole 21, prevent that electrolyte from spilling over, prevent that the air from getting into. Preventing the electrolyte from seeping out from the liquid injection hole.
An assembling process of a battery cover plate with a good insulating structure comprises the following steps: the positive flat rivet 32 and the negative flat rivet 42 respectively penetrate through two ends of the insulating bottom shell 2, two ends of the top plate 1 are respectively aligned with the positive flat rivet 32 and the negative flat rivet 42 to be subjected to cover connection and then to the top of the insulating bottom shell 2, the isolating sleeve 72 at the bottom of the insulating base 7 is respectively sleeved at the middle parts of the positive pole post 321 and the negative pole post 421, the middle parts of the positive pole post 321 and the negative pole post 421 are isolated from the top plate 1, the insulating effect between the negative flat rivet 42 and the top plate 1 is further improved, the bottoms of the positive pole conductive block 31 and the negative pole conductive block 41 are finally respectively inlaid in the insulating base 7, the top surfaces of the positive pole conductive block 31 and the negative pole conductive block 41 and the top surface of the top plate 1 are isolated and insulated, and the middle parts of the positive pole post 321 and the negative pole post 421 are respectively spliced and fixed, namely the battery tab cover plate is assembled.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (7)
1. A battery cover plate having a good insulating structure, comprising:
the two ends of the top plate are respectively provided with a first plug hole;
the two ends of the insulating base are respectively provided with a second plug hole;
the positive electrode contact part is arranged at one end of the top plate and the insulating base, and the top of the positive electrode contact part sequentially penetrates through the first plug hole and the second plug hole to extend to the top end surface of the top plate;
the negative electrode contact part is arranged at the other ends of the top plate and the insulating base, and the top of the negative electrode contact part sequentially penetrates through the first plug hole and the second plug hole and extends to the top end surface of the top plate;
the insulating base, the middle part of insulating base has been seted up and has been cup jointed the hole, and insulating base's bottom surface is equipped with the spacer sleeve that protrudes downwards, is concentric circle structure between spacer sleeve and the cup joint hole, and spacer sleeve cup joints respectively at the middle part of anodal contact and negative pole contact, and spacer sleeve peg graft between anodal contact and negative pole contact and first spliced eye.
2. The battery cover plate with a good insulation structure according to claim 1, wherein: the positive electrode contact portion comprises a positive electrode conductive block and a positive electrode flat head rivet, the top of the positive electrode flat head rivet sequentially penetrates through the first plug hole and the second plug hole to extend to the top end face of the top plate, the bottom of the positive electrode conductive block is embedded in the insulating base, and the top of the positive electrode flat head rivet is sleeved and fixed with the middle of the positive electrode conductive block.
3. The battery cover plate with a good insulation structure according to claim 1, wherein: the negative electrode contact part comprises a negative electrode conductive block and a negative electrode flat head rivet, the top of the negative electrode flat head rivet sequentially penetrates through the first inserting hole and the second inserting hole to extend to the top end face of the top plate, the bottom of the negative electrode conductive block is embedded in the insulating base, and the top of the negative electrode flat head rivet is sleeved and fixed with the middle of the negative electrode conductive block.
4. A battery cover plate with a good insulation structure according to claim 2, characterized in that: the top of positive pole flat head rivet is bellied positive pole portion that makes progress, and the bottom of positive pole flat head rivet is positive spacing portion, and when positive pole portion passed first spliced eye and second spliced eye and extended to the top face of roof, positive pole portion pegged graft inside the spacer sleeve, and the top face of positive spacing portion carries out the butt with insulating base's bottom face.
5. A battery cover plate with a good insulation structure according to claim 3, characterized in that: the top of negative pole crew cut rivet is bellied negative pole post portion that makes progress, and the bottom of negative pole crew cut rivet is negative pole spacing portion, and when negative pole post portion passed first spliced eye and second spliced eye and extended to the top face of roof, negative pole post portion peg graft inside the isolation sleeve, and the top face of negative pole spacing portion carries out the butt with the bottom face of insulating base.
6. A battery cover plate with good insulation structure according to any one of claims 1-5, characterized in that: the middle part of insulating drain pan has seted up the exhaust grid, and the through-hole has been seted up at the middle part of roof, and the through-hole is located the top of exhaust grid, and the inside of through-hole is equipped with the explosion proof piece, and the explosion proof piece shroud is in the top of exhaust grid.
7. A battery cover plate with good insulation structure according to any one of claims 1-5, characterized in that: the middle parts of the top plate and the insulating bottom shell are respectively provided with a first liquid injection hole and a second liquid injection hole, the first liquid injection hole is positioned above the second liquid injection hole, the top of the top plate is provided with a sealing nail, and the bottoms of the sealing nails are inserted into the first liquid injection hole and the second liquid injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320912866.4U CN219717043U (en) | 2023-04-21 | 2023-04-21 | Battery cover plate with good insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320912866.4U CN219717043U (en) | 2023-04-21 | 2023-04-21 | Battery cover plate with good insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717043U true CN219717043U (en) | 2023-09-19 |
Family
ID=87978226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320912866.4U Active CN219717043U (en) | 2023-04-21 | 2023-04-21 | Battery cover plate with good insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717043U (en) |
-
2023
- 2023-04-21 CN CN202320912866.4U patent/CN219717043U/en active Active
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