CN210006770U - kinds of battery top covers and power battery - Google Patents
kinds of battery top covers and power battery Download PDFInfo
- Publication number
- CN210006770U CN210006770U CN201921132385.1U CN201921132385U CN210006770U CN 210006770 U CN210006770 U CN 210006770U CN 201921132385 U CN201921132385 U CN 201921132385U CN 210006770 U CN210006770 U CN 210006770U
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- China
- Prior art keywords
- plastic
- top cap
- top cover
- post
- pole
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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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- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses an battery top cap and power battery, the battery top cap includes that top cap piece, positive pole post, negative pole post, plastic and the insulating plastic of going up of negative pole go up of anodal electrically conductive, the top cap piece is including being flaky main part and two utmost point post rings of outstanding formation in the up end of main part, seted up two utmost point post mounting holes in the main part, the periphery of every utmost point post mounting hole is equipped with utmost point post ring, positive pole post and negative pole post wear to establish respectively to utmost point post mounting hole in, plastic and the insulating plastic of going up of negative pole are located utmost point post ring respectively, the lower terminal surface of the main part of top cap piece, respectively in the periphery laser welding of every utmost point post mounting hole have welding aluminium ring, and be equipped with the sealing washer between welding aluminium ring and the main part, the utility model discloses in, the top cap piece is made through body stamping process, goes up plastic and body injection moulding, both can simplify production technology, but reduction in addition, reverse side welding aluminium ring can avoid melting, improves.
Description
Technical Field
The utility model relates to a power battery field especially relates to kinds of battery top cap and power battery.
Background
With the increasing prominence of environmental problems, low-carbon economy has become the mainstream of future economic development, the increasingly severe air situation has further promoted the rise of new energy automobiles at , hybrid electric vehicles and pure electric vehicles are taken as representatives of the new energy automobiles and are gradually accepted by manufacturers and consumers, and power batteries are taken as a main power source of the new energy automobiles and become which is a key component of the electric automobiles.
The power battery top cover applied in the market at present usually comprises: the top cover plate is provided with two mounting holes, the positive pole column and the negative pole column are arranged in the mounting holes in a penetrating mode, the positive pole at the periphery of the positive pole column is sleeved with the conductive upper plastic, the negative pole at the periphery of the negative pole column is sleeved with the insulating upper plastic, and the welding aluminum block is welded on the outer end face of the top cover plate. At present, the welding aluminum block adopts a front welding mode, and because the welding aluminum block and the anode conductive upper plastic and the cathode insulating upper plastic are arranged on the outer end face of the top cover plate and are close to each other, in the laser welding process, the anode conductive upper plastic and the cathode insulating upper plastic are easily melted due to high temperature, so that the product reject ratio is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide kinds of battery top cap and power battery overcome among the prior art front welding mode exist cause electrically conductive plastic circle and insulating plastic circle fused defect easily.
To achieve the purpose, the utility model adopts the following technical proposal:
types of battery top covers comprise top cover plates, positive poles, negative poles, positive conducting upper plastic and negative insulating upper plastic, wherein each top cover plate comprises a flaky main body and two pole post rings which are formed on the upper end face of the main body in a protruding mode, two pole post mounting holes are formed in the main body, and pole post rings are arranged on the periphery of each pole post mounting hole;
the anode conductive upper plastic is arranged on a pole ring corresponding to the anode post, and the cathode insulating upper plastic is arranged on a pole ring corresponding to the cathode post;
the lower terminal surface of the main part of top cap piece, respectively in the periphery laser welding of every utmost point post mounting hole have welding aluminium ring, just welding aluminium ring with be equipped with the sealing washer between positive post/the negative pole post.
Optionally, the top flap is stamped and formed from sheet aluminum .
Optionally, the negative electrode insulating upper plastic and the positive electrode conducting upper plastic are simultaneously injection molded on the top cover plate.
Optionally, the effective penetration of the laser welding of the welding aluminum ring is greater than or equal to 0.55 mm.
Optionally, annular installation positions are respectively arranged on the periphery of each pole mounting hole on the lower end face of the main body of the top cover plate, and the welding aluminum ring is welded in the annular installation positions.
Optionally, the battery top cap still includes plastic part down, down the plastic part with the top cap piece lock is connected.
Optionally, the lower plastic part and the top cover sheet are fused into an body by ultrasonic wave.
Optionally, the battery top cover further comprises an explosion-proof valve; the explosion-proof valve is welded on the top cover plate and comprises an explosion-proof plate and a protective film arranged on the explosion-proof plate.
Optionally, a plurality of through holes are formed in the periphery of the pole column ring at intervals, and a plurality of protruding blocks matched with the through holes are formed in the positive electrode conductive upper plastic and the negative electrode insulating upper plastic at intervals.
power battery, comprising a battery case, and further comprising the battery top cover of any , wherein the battery top cover is assembled on the battery case.
The utility model has the advantages that:
the embodiment of the utility model provides an among the battery top cap, the top cap piece of constituteing by main part and utmost point post ring is made through body stamping process, compare with traditional separation punching press mode, both can simplify production technology, but reduction in production cost again, plastic and the body injection moulding of top cap piece on the anodal electrically conductive plastic/negative pole is insulating, can advance step simplification preparation technology, save the cost, welding aluminium ring adopts reverse side welding mode, compare with traditional positive welding mode, when avoiding the anodal electrically conductive plastic/negative pole to go up the plastic and burn out because of the high temperature that the welding produced, can also effective control welding depth of fusion, improve the welding yield.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a perspective view of a battery top cover according to an embodiment of the present invention.
Fig. 2 is an exploded view of a battery top cover according to an embodiment of the present invention.
Illustration of the drawings:
the explosion-proof structure comprises a top cover plate 1, an anode post 2, a cathode post 3, anode conductive upper plastic 4, cathode insulating upper plastic 5, a sealing ring 6, a welding aluminum ring 7, an explosion-proof valve 8, a lower plastic part 9, a main body 11, a post ring 12, a post mounting hole 111, a liquid injection hole 112, an explosion-proof hole 113, a protective film 81 and an explosion-proof sheet 82.
Detailed Description
For the purpose of making the objects, features and advantages of the present invention more obvious and understandable, the following description will be made with reference to the accompanying drawings in the embodiments of the present invention, and it is clear and fully described the technical solutions in the embodiments of the present invention, and it is obvious that the embodiments described below are only some embodiments of of the present invention, but not all embodiments.
The technical solution of the present invention will be further explained by means of specific embodiments with reference to the drawings.
Referring to fig. 1 and 2, fig. 1 and 2 are an overall structural view and an exploded structural view of a battery top cover provided in the present embodiment, respectively, and it can be seen from the drawings that the battery top cover of the present embodiment includes: the device comprises a top cover plate 1, an anode column 2, a cathode column 3, an anode conductive upper plastic 4, a cathode insulating upper plastic 5, a sealing ring 6, a welding aluminum ring 7, an explosion-proof valve 8 and a lower plastic part 9.
Wherein, the top cover sheet 1 comprises a main body 11 in a sheet structure; the main body 11 is provided with two pole mounting holes 111 for mounting the anode pole 2/the cathode pole 3 and is also provided with a liquid injection hole 112; the top cover plate 1 further includes a post ring 12 protrudingly formed at the outer periphery of each post mounting hole.
In this embodiment, the main body 11 and the post ring 12 constituting the top cover sheet 1 are both aluminum materials, and both are stamped and formed from an aluminum material body at the time of production.
In the existing design, the main body 11 and the polar ring 12 are designed in a separating structure, and the main body 11 and the polar ring 12 need to be respectively formed by punching in the production process, so that the process is complex, three sets of punching dies and three punching machines need to be added, the cleaning work needs to be finished by single , and the waste rate of aluminum products is high, so that the high production cost is consumed.
Therefore, the top cover plate 1 comprising the main body 11 and the polar ring 12 is formed by adopting an body stamping mode, the production process is simplified, only sets of stamping dies and punch presses are needed to be put into the top cover plate, the generation of waste materials is reduced, and finally the production cost can be greatly reduced.
The positive pole post 2 comprises a positive pole post body and a positive pole bottom plate connected to the bottom of the positive pole post body. The negative pole post comprises a negative pole post body and a negative pole bottom plate connected to the bottom of the negative pole post body. The positive pole column body of the positive pole column 2 and the negative pole column body of the negative pole column 3 are respectively arranged in the corresponding pole column mounting holes in a penetrating mode, and the upper ends of the positive pole column body and the negative pole column body exceed the upper end face of the top cover plate 1.
The positive conductive upper plastic 4 is injection molded on pole post rings 12 of the top cover plate 1, the positive conductive upper plastic 4 is used for realizing the conductive connection of the positive pole post 2 and the top cover plate 1, the negative insulating upper plastic 5 is injection molded on the other pole post rings 12 of the top cover plate 1, and the negative insulating upper plastic 5 is used for realizing the insulating connection of the negative pole post 2 and the top cover plate 1.
The periphery interval of post ring 12 is equipped with a plurality of through-hole, and plastic 4 on the anodal electrically conducts and plastic 5's on the negative pole insulation inner periphery evenly is equipped with a plurality of lug with the through-hole assorted to guarantee the mould and mould plastics into gluey flow, and promote the reliability of rubber coating performance.
To plastic 4 on the anodal electrically conducts and plastic 5 on the negative pole is insulating, this embodiment adopts and puts into corresponding utmost point post mounting hole 111 on top cap piece 1 at anodal post 2 and negative pole post 3 after, and the mode of injection moulding simultaneously on top cap piece 1 replaces conventional respectively injection moulding mode, can reduce injection mold into sets by two sets, advances step reduction battery top cap's manufacturing cost.
On the lower terminal surface of main part 11 of top cover plate 1, respectively in the periphery of every utmost point post mounting hole 111 be equipped with and weld the annular installation position (not shown in the figure) that aluminium ring 7 matches, after plastic 4 on the anodal electrically conductive and plastic 5 on the negative pole insulation on top cover plate 1 injection moulding, weld aluminium ring 7 and pack into the annular installation position and become body through laser welding with main part 11, the effective penetration of laser welding is more than or equal to 0.55mm, and sealing washer 6 locates between welding aluminium ring 7 and the main part 11 of top cover plate 1, realize good gas tightness.
In this embodiment, since the upper conductive plastic 4 on the positive electrode and the upper insulating plastic 5 on the negative electrode are located on the upper end surface of the top cover plate 1, and the sealing ring 6 and the welding aluminum ring 7 are located on the lower end surface of the top cover plate 1, the embodiment substantially laser-welds the welding aluminum ring 7 to the reverse surface of the top cover plate 1, and compared with the conventional welding mode on the front surface, the reverse welding mode can effectively avoid the damage such as melting and the like caused by high temperature caused by the laser welding process of the upper conductive plastic 4 on the positive electrode and the upper insulating plastic 5 on the negative electrode, and is more favorable for controlling the welding penetration and reducing the welding defective rate.
Explosion-proof valve 8 sets up on top cover plate 1, and this explosion-proof valve 8 includes protection film 81 and explosion-proof piece 82, is equipped with explosion-proof hole 113 on top cover plate 1's the main part 11, and explosion-proof piece 82 sets up in explosion-proof hole 113, and protection film 81 sets up on explosion-proof piece 82, and after the pressure rose in the battery, electrolyte can break through explosion-proof piece 82, in time releases the inside heat of battery effectively, avoids the battery because of the too big condition of taking place the explosion of pressure.
Lower plastic part 9 and top cap piece 1 lock become bodies to make both closely connected through the ultrasonic wave, be equipped with a plurality of through-holes on the position that corresponds explosion-proof valve 8 below on the plastic part 9 down for transmit explosion-proof valve 8 with pressure when the battery internal pressure rises and in order to reduce the potential safety hazard, can make electrolyte flow into inside the battery case when annotating liquid hole 112 and pouring into electrolyte simultaneously.
In addition, in this embodiment, the material of the positive pole post 2 is aluminum, the material of the negative pole post 3 is a copper-aluminum composite material, the material of the positive conductive upper plastic 4 is conductive PPS, and the material of the negative insulating upper plastic 5 is insulating PPS.
Specifically, the production process of the battery top cover comprises the following steps:
(1) the body is stamped to form the top cover plate 1 comprising the main body 11 and the post ring 12.
(2) And (3) loading the positive pole post 2, the negative pole post 3 and the top cover plate 1 into an injection mold, and respectively penetrating the positive pole post 2 and the negative pole post 3 through corresponding pole post mounting holes in the top cover plate 1.
(3) And simultaneously injection-molding an anode conductive upper plastic 4 and a cathode insulating upper plastic 5 on the top cover plate 1.
(4) And a sealing ring 6 and a welding aluminum ring 7 are arranged on the lower end face of the top cover plate 1, and the welding aluminum ring 7 is welded to the reverse side of the top cover plate 1.
(5) After the explosion-proof valve 8 is installed on the top cover plate 1, the lower plastic part 9 and the top cover plate 1 are assembled into an body.
In summary, in the battery top cover provided by the embodiment, the top cover plate 1 including the main body 11 and the post ring 12 is formed by stamping the body, compared with the traditional separation stamping method, the production process can be simplified, the production cost can be reduced, steps can be further simplified and the cost can be saved by injection molding the positive conductive upper plastic 4/the negative insulating upper plastic 5 and the top cover plate 1 body, and compared with the traditional front welding method, the welding aluminum ring 7 is welded to the back surface of the top cover plate 1, the welding penetration can be effectively controlled while the burning out of the positive conductive upper plastic 4/the negative insulating upper plastic 5 due to high temperature generated by welding is avoided, and the welding yield is improved.
In addition, the embodiment also provides power batteries, which comprise a battery shell and a battery top cover assembled on the battery shell, wherein the battery top cover is as described above.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
- The top cover of 1, kinds of batteries comprises top cover plate, positive pole, negative pole, positive pole conductive plastic and negative pole insulating plastic,the top cover plate comprises a sheet-shaped main body and two pole column rings which are formed on the upper end face of the main body in a protruding mode, wherein the main body is provided with two pole column mounting holes, and pole column rings are arranged on the periphery of each pole column mounting hole;the anode conductive upper plastic is arranged on a pole ring corresponding to the anode post, and the cathode insulating upper plastic is arranged on a pole ring corresponding to the cathode post;the lower terminal surface of the main part of top cap piece, respectively in the periphery laser welding of every utmost point post mounting hole have welding aluminium ring, just welding aluminium ring with be equipped with the sealing washer between positive post/the negative pole post.
- 2. The battery top cap of claim 1, wherein the top flap is integrally stamped and formed from aluminum sheet .
- 3. The battery top cap of claim 1, wherein the negative insulating upper plastic and the positive conductive upper plastic are injection molded onto the top cap sheet at the same time.
- 4. The battery top cap of claim 1, wherein the laser weld effective penetration of the welded aluminum ring is 0.55mm or greater.
- 5. The battery top cap of claim 1, wherein the lower end surface of the main body of the top cover sheet is provided with annular mounting positions respectively at the periphery of each pole mounting hole, and the welding aluminum ring is welded in the annular mounting positions.
- 6. The battery top cap of claim 1, further comprising a lower plastic component that is snap-fit to the top cover piece.
- 7. The battery top cap of claim 6, wherein the lower plastic part and the top cover sheet are ultrasonically fused into an body.
- 8. The battery top cap of claim 1, further comprising an explosion-proof valve; the explosion-proof valve is welded on the top cover plate and comprises an explosion-proof plate and a protective film arranged on the explosion-proof plate.
- 9. The battery top cap of claim 1, wherein the outer circumference of the pole collar is uniformly provided with a plurality of through holes, and the inner circumferences of the positive conductive upper plastic and the negative insulating upper plastic are uniformly provided with a plurality of projections matched with the through holes.
- A power cell of comprising a cell housing, further comprising the cell top cover of any of claims 1-9 through , said cell top cover being mounted to said cell housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132385.1U CN210006770U (en) | 2019-07-18 | 2019-07-18 | kinds of battery top covers and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132385.1U CN210006770U (en) | 2019-07-18 | 2019-07-18 | kinds of battery top covers and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210006770U true CN210006770U (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921132385.1U Expired - Fee Related CN210006770U (en) | 2019-07-18 | 2019-07-18 | kinds of battery top covers and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210006770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246993A (en) * | 2019-07-18 | 2019-09-17 | 东莞阿李自动化股份有限公司 | A kind of battery cap and power battery |
| CN112751113A (en) * | 2020-12-31 | 2021-05-04 | 远景动力技术(江苏)有限公司 | Riveting top cover, assembling method thereof and square-shell battery cell |
-
2019
- 2019-07-18 CN CN201921132385.1U patent/CN210006770U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246993A (en) * | 2019-07-18 | 2019-09-17 | 东莞阿李自动化股份有限公司 | A kind of battery cap and power battery |
| CN112751113A (en) * | 2020-12-31 | 2021-05-04 | 远景动力技术(江苏)有限公司 | Riveting top cover, assembling method thereof and square-shell battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200131 Termination date: 20200718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |