CN220604810U - Battery cover plate and battery - Google Patents
Battery cover plate and battery Download PDFInfo
- Publication number
- CN220604810U CN220604810U CN202322292116.4U CN202322292116U CN220604810U CN 220604810 U CN220604810 U CN 220604810U CN 202322292116 U CN202322292116 U CN 202322292116U CN 220604810 U CN220604810 U CN 220604810U
- Authority
- CN
- China
- Prior art keywords
- plate
- battery cover
- anode
- riveting
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003825 pressing Methods 0.000 claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 238000010073 coating (rubber) Methods 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000004080 punching Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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 relates to a battery cover plate and a battery, wherein the battery cover plate comprises an optical aluminum plate, two sides of the optical aluminum plate are respectively and sequentially connected with an anode structure of an anode pressing plate and an anode encapsulation and a cathode structure of a cathode pressing plate and a cathode encapsulation from top to bottom, the lower part of the optical aluminum plate is connected with a lower gasket through a cathode connecting sheet welding plate and an anode connecting sheet welding plate, and the anode pressing plate, the cathode encapsulation, the anode connecting sheet welding plate and the cathode connecting sheet welding plate are in an integral battery cover plate structure through locking riveting. According to the scheme, the lock rivet is used for riveting, punching is not needed during riveting, and the lock rivet tightness is ensured. The battery cover riveting that has solved to exist among the prior art adopts light aluminum plate, lower gasket, clamp plate to leave the riveting hole, through interference fit, makes utmost point post and clamp plate link together, and whole assembly process is complicated, and is strict to spare part cooperation requirement, and the cost is higher, easily takes place sealed inefficacy, leads to weeping scheduling problem.
Description
Technical Field
The utility model belongs to the technical field of lithium batteries, and particularly relates to a battery cover plate and a battery.
Background
In the prior art, a light aluminum plate, a lower gasket and a pressing plate are used for riveting a battery cover, riveting holes are reserved on the pressing plate, a pole column is connected with the pressing plate through interference fit, and then the connection strength is enhanced by welding the pole column and the pressing plate, such as:
the patent document with the authorized bulletin number of CN 217444511U discloses a battery cover plate, a positive rivet sequentially penetrates through a sealing ring, a stop frame, a base plate, a positive rotation stopping piece and a positive pressing plate to rivet, a negative rivet sequentially penetrates through the sealing ring, the stop frame, the base plate, the negative rotation stopping piece and the negative pressing plate to rivet, the positive rotation stopping piece is welded below the positive rivet, the negative rotation stopping piece is welded below the negative rivet, the center of the base plate is provided with an explosion-proof hole, the explosion-proof piece is installed in the explosion-proof hole, the top of the explosion-proof hole is provided with an explosion-proof valve dustproof paste, the base plate is provided with a liquid injection hole, sealing nails and sealing pieces are installed in the liquid injection hole in a sealing mode, cylindrical positioning grooves are further formed in two ends of the base plate, and cylindrical positioning through holes are formed in the positive rotation stopping piece and the negative rotation stopping piece and are connected with the positioning grooves through cylindrical positioning column nesting.
Patent document with the authority of publication number CN 209169203U discloses a lithium iron phosphate battery cover plate, positive connection piece and negative connection piece's connection piece contained angle be 90 degrees, positive rivet pass stop frame, base plate, anodal weak baffle and the rivet hole on one of them clamp plate in proper order, top and clamp plate riveting, negative connection piece pass stop frame, base plate, negative insulation board and the rivet hole on another clamp plate in proper order, top and clamp plate riveting, positive connection piece pass through laser spot welding under the positive connection piece, negative connection piece pass through laser spot welding under the negative connection piece, open at the center of base plate has integrative explosion vent, install integrative rupture membrane and combination pad pasting in the explosion vent, open in the base plate left side has annotate the liquid hole.
Patent application publication No. CN 106299172A discloses a lithium ion battery cover plate, including the base plate, be equipped with positive pole rivet hole and the negative pole rivet hole that the interval set up on the base plate, be equipped with sealed insulating gasket in positive pole rivet hole and the negative pole rivet hole, sealed insulating gasket up end is equipped with positive pole clamp plate and negative pole clamp plate respectively, and positive pole clamp plate and negative pole clamp plate rivet become integrative through positive pole rivet and negative pole rivet respectively.
The battery cover assembly process is complex, strict requirements are met on the matching of parts, the cost is high, sealing failure is easy to occur, the problems of liquid leakage and the like are caused, and a battery cover plate connecting structure with a novel structure is required to be provided.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a battery cover plate and a battery, wherein the battery cover plate is connected in a locking riveting mode, holes are not needed during riveting, connecting sheets do not penetrate, a sealing structure is not needed, and locking riveting tightness is ensured.
The utility model aims to achieve the aim, and the aim is achieved by the following technical scheme:
in one aspect, the utility model provides a battery cover plate, which comprises an optical aluminum plate, wherein two sides of the optical aluminum plate are respectively and sequentially connected with an anode pressing plate, an anode structure of an anode rubber coating and a cathode structure of a cathode pressing plate and an anode rubber coating from top to bottom, the lower part of the optical aluminum plate is connected with a lower gasket through a cathode connecting sheet welding plate and an anode connecting sheet welding plate, and the anode pressing plate, the cathode pressing plate, the anode rubber coating, the cathode rubber coating and the cathode rubber coating are respectively and sequentially connected with a cathode pressing plate and a cathode rubber coating from top to bottom to form an integral battery cover plate structure through lock riveting.
Further, the positive electrode pressing plate and the negative electrode pressing plate are square in shape.
Further, the positive electrode rubber coating and the negative electrode rubber coating are provided with first grooves respectively containing the positive electrode pressing plate and the negative electrode pressing plate.
Further, two sides of the optical aluminum plate are respectively provided with a second groove for containing the positive electrode and the negative electrode.
Further, a mounting hole is formed in the second groove on the riveting negative electrode structure side of the optical aluminum plate, and a sealing ring is arranged in the mounting hole to form a sealed and insulated negative electrode structure.
Further, the mounting hole is in a stepped concave hole shape.
Further, a boss is arranged on the lower surface of the negative electrode rubber coating corresponding to the mounting hole of the optical aluminum plate, and the sealing ring is compressed through the boss when the negative electrode pressing plate and the negative electrode rubber coating are riveted.
Further, the riveting mode of the positive electrode structure is a state that the positive electrode pressing plate and the light aluminum plate are positively charged by the positive electrode connecting sheet welding plate through locking riveting of the current electrically connected with the battery cover plate; when the electric connection of the battery cover plate is not in a positive structure state, a riveting mode of a negative electrode structure is adopted.
Further, the lock rivet is a commercially available rivet, and the diameter of the lock rivet is phi 3 mm-phi 12mm.
The utility model also provides a battery, comprising the battery cover plate.
The beneficial effects are that: according to the scheme, the riveting is used, punching is not needed during riveting, the sealing performance of the riveting is ensured, and the problems that in the prior art, a battery cover is riveted by adopting an aluminum plate, a lower gasket and a pressing plate to leave riveting holes, a pole is connected with the pressing plate through interference fit, the whole assembly process is complex, the matching requirement on parts is strict, the cost is high, sealing failure is easy to occur, liquid leakage is caused and the like are solved.
Drawings
FIG. 1 is a schematic illustration of the components of a battery cover plate after disassembly;
FIG. 2 is a cross-sectional view of a battery cover plate assembly;
fig. 3 is a sectional view of a battery cover plate assembled with a negative electrode.
In the figure: 1. the aluminum plate is characterized by comprising an aluminum plate, 2, an anode structure, 2-1, an anode pressing plate, 2-2, an anode rubber coating, 2-3, an anode connecting sheet welding plate, 3, a cathode structure, 3-1, a cathode pressing plate, 3-2, a cathode rubber coating, 3-2-1, a boss, 3-3, a cathode connecting sheet welding plate, 4, a lower gasket, 5, a lock rivet, 6, a first groove, 7, a second groove, 8, a mounting hole, 9 and a sealing ring.
Detailed Description
The following detailed description of the embodiments according to the present utility model is provided with reference to the preferred embodiments:
referring to fig. 1-3 in detail, this embodiment provides a battery, the battery includes battery cover plate, the battery cover plate includes light aluminum plate 1, light aluminum plate both sides have respectively top-down connected gradually positive pole clamp plate 2-1 and positive pole rubber coating 2-2's positive pole structure 2 and top-down connected gradually negative pole clamp plate 3-1 and negative pole rubber coating 3-2's negative pole structure 3, light aluminum plate below is connected with gasket 4 through negative pole connection piece welded plate 3-3 and positive pole connection piece welded plate 2-3, and positive, negative pole clamp plate, positive, negative pole rubber coating and positive, negative pole connection piece welded plate are whole battery cover plate structure through lock rivet 5 riveting.
The shape of the positive electrode pressing plate and the negative electrode pressing plate is square.
The positive electrode rubber coating and the negative electrode rubber coating are provided with first grooves 6 respectively containing the positive electrode pressing plate and the negative electrode pressing plate.
Two sides of the optical aluminum plate 1 are respectively provided with a second groove 7 for containing the positive electrode and the negative electrode.
The second groove 7 on the riveting negative electrode structure side of the optical aluminum plate is provided with a mounting hole 8, and a sealing ring 9 is arranged in the mounting hole to form a sealed and insulated negative electrode structure with the lower gasket 4. The shape of the mounting hole is a stepped concave hole.
The lower surface of the negative electrode rubber coating is provided with a boss 3-2-1 corresponding to the mounting hole of the optical aluminum plate, and the negative electrode pressing plate and the negative electrode rubber coating are used for compressing the sealing ring through the boss 3-2-1 during riveting.
The cathode encapsulation setting boss 3-2-1 has the following advantages: the rivet deformation extrusion sealing ring is realized through pressing riveting after the traditional riveting is nailed, deformation is uneven, poor sealing possibly occurs after pressing riveting, the wall thickness of the periphery of the lock riveting rivet is even, deformation occurs during riveting compared with pressing riveting, the force of the extrusion sealing ring is even, the even sealing effect can be better realized, and liquid leakage cannot occur when one side is pressed in place.
The light aluminum plate is provided with the recess, and put into the through-hole with the sealing washer, part can place in the recess and seal the reinforcing.
Because light aluminum plate has positive electricity, the negative pole needs to be isolated with light aluminum plate, and negative pole rubber coating boss is placed in the sealing washer, and the rivet pierces through negative pole rubber coating boss, does not take place to contact with light aluminum plate to realize insulatingly.
The welding plate insulation of the negative electrode connecting sheet and the optical aluminum plate are clamped with a lower gasket, so that the welding plate and the optical aluminum plate are not contacted, and insulation is realized.
The riveting mode of the positive electrode structure is that the positive electrode pressing plate and the light aluminum plate are positively charged by the positive electrode connecting sheet welding plate through locking riveting; when the electric connection of the battery cover plate is not in a positive structure state, a riveting mode of a negative electrode structure is adopted.
The lock rivets are commercially available rivets.
The diameter of the lock rivet is phi 3 mm-phi 12mm, and the thickness of the pressing plate is less than the total thickness of the lock rivet length less than the pressing plate, the polished aluminum plate and the connecting sheet welding plate.
The lower gasket belongs to conventional parts and is not described in detail.
Working process and principle
This scheme places clamp plate, light aluminum plate, anodal rubber coating, negative pole rubber coating, anodal connection piece welded plate, negative pole connection piece welded plate and lower gasket behind fixed position, adopts the mode of lock riveting to rivet. The pressing plate is a square pressing plate, and an anti-rotation structure is not needed to be designed after the grooving of the optical aluminum plate. As shown in fig. 1 and 3, the positive electrode pressing plate, the positive electrode encapsulation, the positive electrode riveting position of the optical aluminum plate and the riveting position of the lower gasket do not need to be provided with riveting holes, and the rivet is directly driven into a material in a locking riveting mode, as shown in fig. 1, the welding plate of the positive electrode connecting sheet is not riveted through after the rivet is driven, only the tail part of the rivet is driven into the material, the locking riveting has good sealing performance, and the sealing can be realized without increasing a sealing structure. The cover plate is electrically connected with a welding plate of the positive electrode connecting sheet, and the positive electrode pressing plate and the optical aluminum plate are positively charged through rivets. The positive structure of the cover plate is not needed, and the riveting mode of the negative electrode can be referred.
As shown in fig. 2 and 3, the riveting positions of the negative electrode pressing plate, the negative electrode rubber coating and the lower gasket of the negative electrode structure do not need to be provided with riveting holes, the rivet is directly driven into the material by adopting a locking riveting mode, the negative electrode is required to be subjected to insulation design, the light aluminum plate cannot be directly contacted with the rivet, the light aluminum plate is provided with mounting holes, and the mounting holes are internally provided with sealing rings. As shown in FIG. 3, the cathode wrapping tape is provided with a boss 3-2-1, the boss 3-2-1 is matched with the mounting hole of the optical aluminum plate, rivets are nailed into the cathode wrapping position, and the material is deformed to further compress the sealing ring, so that the sealing and insulating effects are achieved. The rivet is riveted into the cathode encapsulation boss to be contacted with the cathode connecting sheet welding plate, so that the cathode current flows from the cathode connecting sheet welding plate to the cathode pressing plate.
The above detailed description of a rivet connection structure of a battery cover plate with reference to the embodiments is illustrative and not restrictive, and several embodiments can be listed in the defined scope, thus, variations and modifications without departing from the general inventive concept shall fall within the scope of protection of the present utility model.
Claims (10)
1. A battery cover plate, characterized by: the battery comprises a light aluminum plate, wherein two sides of the light aluminum plate are respectively connected with an anode structure of an anode pressing plate and an anode rubber coating from top to bottom and an anode structure of a cathode pressing plate and an anode rubber coating from top to bottom, the lower part of the light aluminum plate is connected with a lower gasket through an anode connecting sheet welding plate and an anode connecting sheet welding plate, and the anode pressing plate, the anode rubber coating and the cathode rubber coating are in an integral battery cover plate structure through lock riveting.
2. The battery cover plate according to claim 1, characterized in that: the shape of the positive electrode pressing plate and the negative electrode pressing plate is square.
3. The battery cover plate according to claim 1, characterized in that: the positive electrode rubber coating and the negative electrode rubber coating are provided with first grooves respectively containing the positive electrode pressing plate and the negative electrode pressing plate.
4. The battery cover plate according to claim 1, characterized in that: and two sides of the optical aluminum plate are respectively provided with a second groove for containing the positive electrode and the negative electrode.
5. The battery cover plate according to claim 1 or 4, characterized in that: and a second groove on the riveting negative electrode structure side of the optical aluminum plate is provided with a mounting hole, and a sealing ring is arranged in the mounting hole to form a sealed and insulated negative electrode structure.
6. The battery cover plate according to claim 5, wherein: the shape of the mounting hole is a stepped concave hole.
7. The battery cover plate according to claim 5, wherein: the lower surface of the negative electrode rubber coating is provided with a boss corresponding to the mounting hole of the optical aluminum plate, and the negative electrode pressing plate and the negative electrode rubber coating are in compression with a sealing ring through the boss during riveting.
8. The battery cover plate according to claim 1, characterized in that: the riveting mode of the positive electrode structure is that the positive electrode pressing plate and the light aluminum plate are positively charged by the positive electrode connecting sheet welding plate through locking riveting; when the electric connection of the battery cover plate is not in a positive structure state, a riveting mode of a negative electrode structure is adopted.
9. The battery cover plate according to claim 1, characterized in that: the lock rivet is a commercially available rivet, and the diameter of the lock rivet is phi 3 mm-phi 12mm.
10. A battery comprising a battery cover plate according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292116.4U CN220604810U (en) | 2023-08-25 | 2023-08-25 | Battery cover plate and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292116.4U CN220604810U (en) | 2023-08-25 | 2023-08-25 | Battery cover plate and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220604810U true CN220604810U (en) | 2024-03-15 |
Family
ID=90180226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322292116.4U Active CN220604810U (en) | 2023-08-25 | 2023-08-25 | Battery cover plate and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220604810U (en) |
-
2023
- 2023-08-25 CN CN202322292116.4U patent/CN220604810U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |