CN216354654U - Battery top cap and battery - Google Patents
Battery top cap and battery Download PDFInfo
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- CN216354654U CN216354654U CN202122402978.9U CN202122402978U CN216354654U CN 216354654 U CN216354654 U CN 216354654U CN 202122402978 U CN202122402978 U CN 202122402978U CN 216354654 U CN216354654 U CN 216354654U
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- top cover
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model belongs to the technical field of lithium ion battery technique and specifically relates to a battery top cap and battery is related to for the lid is located battery subject, in order to form the battery, include: the battery top cover is arranged on the battery main body and faces towards the first side of the battery main body, the pole is arranged on the top cover plate, a cavity is formed in the pole, and the cavity comprises an opening facing the side where the first side is open. According to the battery top cover and the battery, the gas production space in the battery of the battery is effectively expanded, and the safety performance of the battery is improved; meanwhile, the structure of the battery top cover is effectively simplified, and the compression space of the height of the pole is provided, so that the durability of the battery top cover is improved; in addition, the overall weight of the top cover is reduced, and the energy density of the battery is improved.
Description
Technical Field
The application relates to the technical field of lithium ion batteries, in particular to a battery top cover and a battery.
Background
At present, the top cover of the lithium ion battery has many parts and a complex structure, and is limited by the structure of the top cover, and the pole is generally formed into a cylindrical structure, which results in low durability and safety of the top cover. And the columnar structure of the pole column ensures that the pole column has heavy weight, occupies large space of the battery and has high manufacturing cost.
In addition, often adopt the extrusion sealing mode to go on between utmost point post and the lamina tecti (for example, fluorine rubber sealing washer), rely on the extrusion sealing washer to realize sealed, the big inefficiency of the assembly degree of difficulty, sealed reliability is low.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a battery top cap and battery to it is big that the space that highly high weight of utmost point post height that exists is big and occupy the battery among the prior art to solve to a certain extent, and the durability and the security of top cap are low, the technical problem of cost of manufacture.
According to a first aspect of the present application, there is provided a battery top cover for covering a battery main body to form a battery, comprising:
a top cover plate including a first side portion facing the battery main body in a state in which the battery top cover is disposed on the battery main body,
the pole column is arranged on the top cover plate, a cavity is formed in the pole column, and the cavity comprises an opening facing the side where the first side portion is located.
Preferably, the top cover plate is formed with a first hole penetrating through the top cover plate, the post is penetratingly disposed in the first hole, the post includes:
a cylindrical portion penetrating the first hole;
the platform part is arranged at one end of the barrel part far away from the first side part, and the inner side part of the cavity comprises the inner side part of the barrel part and the side part of the platform part facing to the side where the first side part is located;
and the pole post cover is arranged on the side part of the platform part, which is back to the first side part.
According to the technical characteristics, the manufacturing difficulty of the pole is reduced, and the manufacturing cost of the pole is effectively reduced.
Preferably, the pole comprises:
a first pole formed of aluminum;
and the second pole is formed by copper or copper-aluminum composite material.
According to the technical characteristics, the first pole can be formed as the anode of the battery, and the conductivity of the anode is ensured by the aluminum; the second pole can be formed as the cathode of the battery, and is formed by copper or copper-aluminum composite material, so that the welding adhesion of the second pole and the copper material such as the pole ear inside the battery is ensured.
Preferably, the barrel portion of the second pole is formed of copper;
the platform part of the second pole is formed by copper, the pole cover of the second pole is formed by copper-aluminum composite materials and comprises a copper part and an aluminum part which are connected with each other, the copper part is combined with the platform part of the second pole, and the aluminum part is arranged on one side of the copper part, which is back to the platform part of the second pole; or the second utmost point post the utmost point post lid is formed by aluminium, the second utmost point post the platform portion is formed by copper aluminium combined material and including the copper part and the aluminium part of connecting each other, the aluminium part with utmost point post lid joint, the copper part set up in the back of aluminium part is to one side of utmost point post lid.
According to the technical characteristics, the welding viscosity of the pole cover and the platform part is ensured.
Preferably, the platform part is formed with a first through hole penetrating through the platform part; a first boss corresponding to the first through hole is formed on the side part, close to the pole, of the pole cover, and the first boss is embedded in the first through hole; or
The lateral part of the platform part, which is far away from the first lateral part, is provided with a second boss, the pole cover is provided with a second through hole corresponding to the second boss, and the second through hole is mutually embedded with the second boss.
According to the technical characteristics, the connection stability of the pole cover and the platform part is ensured.
Preferably, the pole further comprises a flange disposed at an end of the barrel portion away from the platform portion, the flange extending over an outer edge of the barrel portion and extending outward of the barrel portion.
According to the technical characteristics, the connection stability and the sealing performance of the pole and the top cover plate are improved.
Preferably, the battery top cover further comprises a sealing washer, the sealing washer is sleeved on the outer side of the pole, and the pole is arranged in the first hole through the sealing washer;
the outer side of the sealing washer is provided with a circle of grooves distributed along the circumferential direction of the sealing washer, and the inner side of the first hole is embedded into the grooves and is abutted against the bottoms of the grooves.
According to the technical characteristics, the sealing performance of the battery top cover is ensured.
Preferably, the sealing washer is formed into plastic, and the plastic is processed by nano-molding, so that micro pits with nano-scale sizes are uniformly distributed on the surface of the plastic;
the surfaces of the top cover plate and the surfaces of the pole posts are subjected to nanocrystallization treatment, so that nano-scale particles are formed on the surfaces of the top cover plate and the pole posts.
According to the technical characteristics, the sealing is realized through the characteristics of the nanometer surface, the assembly difficulty of the battery top cover is effectively reduced while the sealing performance is ensured, and the yield of the battery top cover assembly is improved.
Preferably, the battery top cap further comprises:
the explosion-proof valve is formed into an explosion-proof sheet and a connecting edge which is distributed for a circle along the explosion-proof sheet, the shape of the explosion-proof sheet is matched with that of the second hole, the explosion-proof valve is hermetically arranged in the second hole through the connecting edge, the explosion-proof sheet is provided with a nick part, the thickness of the nick part is thinner than that of other parts of the explosion-proof sheet, the pressure of the battery in the battery is greater than a preset pressure state, and the nick part is broken;
the insulating part, with the top cover plate towards one side butt inside the battery, the insulating part be formed with the corresponding third hole in first hole supplies utmost point post runs through, the insulating part be formed with the corresponding fourth hole in second hole.
According to the technical characteristics, the explosion-proof valve is arranged, so that the safety of the battery is effectively improved; the insulating part is arranged, so that the part of the top cover plate, except the exposed part of the pole, is insulated.
According to a second aspect of the present application, a battery is provided, which includes a battery main body and the battery top cover according to any of the above technical solutions, so that all the beneficial technical effects of the battery top cover are achieved, and are not described herein again.
Compared with the prior art, the beneficial effect of this application is:
the application provides a battery top cap, through the structure of lamina tecti and utmost point post. The cavity is formed in the pole, so that the gas production space in the battery of the battery is effectively expanded, and the safety performance of the battery is improved; meanwhile, the structure of the battery top cover is effectively simplified, and a compressible space of the height of the pole is provided, so that the durability of the battery top cover is improved; in addition, the overall weight of the top cover is reduced, and the energy density of the battery is improved.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of an exploded view of a structure of a battery top cover according to a first embodiment of the present application;
fig. 2 is a schematic diagram of a structural isometric view of a battery top cover provided in a first embodiment of the present application;
fig. 3 is a sectional view of a structure obtained by cutting a battery top cover along a first plane, provided in the first embodiment of the present application;
fig. 4 is an enlarged schematic structural view of a top cover of the battery provided in the first embodiment of fig. 3 at a;
fig. 5 is an enlarged structural view of a top cover of the battery provided in the first embodiment of fig. 3 at B;
fig. 6 is an isometric view of the structure of the anode terminal post of the battery top cap provided by the first embodiment of the present application;
fig. 7 is a sectional view of a structure obtained by sectioning an anode post of a battery top cap along a first plane, according to a first embodiment of the present application;
fig. 8 is an isometric view of the structure of the cathode terminal post of the battery top cap provided by the first embodiment of the present application;
fig. 9 is a sectional view of a structure obtained by sectioning a cathode terminal of a battery top cap along a first plane, according to a first embodiment of the present application;
fig. 10 is a schematic diagram of an exploded view of the structure of a battery top cover according to a second embodiment of the present application;
fig. 11 is a schematic diagram of a structural isometric view of a battery top cover provided in a second embodiment of the present application;
fig. 12 is a sectional view of a structure obtained by cutting a battery top cover along a first plane, provided by a second embodiment of the present application;
fig. 13 is an enlarged structural view of a top cover of the battery provided in the second embodiment of fig. 12 at C;
fig. 14 is an enlarged structural view of a top cover of the battery provided in the second embodiment of fig. 12 at D;
fig. 15 is an isometric view of the structure of the anode terminal post of the battery top cap provided by a second embodiment of the present application;
fig. 16 is a sectional view of a structure obtained by sectioning an anode post of a battery top cap along a first plane, according to a second embodiment of the present application;
fig. 17 is an isometric view of the structure of the cathode terminal post of the battery top cap provided by a second embodiment of the present application;
fig. 18 is a sectional view of a structure obtained by sectioning a cathode terminal of a battery top cap along a first plane, according to a second embodiment of the present application.
Reference numerals:
100-a top cover plate; 110-explosion-proof valve; 200-plastic ring; 310-anode pole column; 311-anode cover; 312 — an anode body; 320-cathode pole column; 321-a cathode cover; 322-a cathode body; 321 a-a polar cap aluminum portion; 321 b-a polar cap copper portion; 322 a-a body aluminum portion; 322 b-a bulk copper portion; 400-plastic cover plate.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A battery top cap and a battery according to some embodiments of the present application are described below with reference to fig. 1 to 18.
Referring to fig. 1 to 18, a first aspect of embodiments of the present application provides a battery top cap for covering a battery main body to form a battery, the battery top cap including a top cap plate 100 and a terminal post. Specifically, the top cap plate 100 includes a first side portion facing the battery main body in a state where the battery top cap is mounted to the battery main body. The pole is disposed on the top cover plate 100, and a cavity is formed therein, the cavity including an opening opened toward the first side. Therefore, the gas production space in the battery of the battery is effectively expanded, and the safety performance of the battery is improved; meanwhile, the structure of the battery top cover is effectively simplified, and a compressible space with the height of the pole is provided (namely, the pole can be manufactured to have smaller height compared with the existing columnar pole), so that the durability of the battery top cover is improved; in addition, the overall weight of the top cover is also reduced, so that the energy density of the battery is improved.
Preferably, the top cover plate 100 is formed with a first hole penetrating the top cover plate 100, the post is penetratingly disposed in the first hole, and the post includes a post body and a post cover. The pole body is formed into a body cylinder and a body platform. The main body cylinder, the main body platform and the pole cover part penetrate through the first hole, the main body platform is arranged at one end, far away from the first side part, of the main body cylinder, and the inner side part of the cavity comprises the inner side part of the main body cylinder and the side part, facing the side where the first side part is located, of the main body platform. The pole polar cover is arranged on the side part of the main body platform, back to the first side part. The manufacturing difficulty of the pole is reduced, and the manufacturing cost of the pole is effectively reduced. Preferably, as shown in fig. 1 and 10, the top cover plate 100 may be formed as a first rectangular plate, the first hole may be formed as a circular hole, and the body cylinder may be formed as a cylinder, so that it can be adapted to the shape of most poles.
Preferably, as shown in fig. 6 to 9 and 15 to 18, the pole further includes a flange disposed at an end of the main body cylinder away from the main body platform, the flange extending over an outer edge of the main body cylinder and extending toward an outer side of the main body cylinder. So, when utmost point post runs through the state in first hole, the flange can play the effect to injecing utmost point post position in first hole, has increased utmost point post and 100 both connection stability and leakproofness of lamina tecti simultaneously.
The pole is not limited to the pole body and the pole cover, and the pole may be integrally formed as long as the requirement of the processing precision can be met.
In an embodiment, as shown in fig. 2 and 10, the pole may include an anode pole 310 and a cathode pole 320 (i.e., the pole body may include an anode body 312 and a cathode body 322, and the pole cover may include an anode cover 311 and a cathode cover 321). The anode pole 310 may be formed of aluminum (i.e., both the anode body 312 and the anode lid 311 are made of aluminum) to ensure good electrical conductivity of the anode.
Alternatively, the cathode terminal may be formed of copper (i.e., both the cathode body and the cathode cap are made of copper, not shown in the figures). Therefore, the welding viscosity of copper materials such as the battery inner electrode lug and the like is ensured.
Preferably, the cathode post 320 may be formed of a copper-aluminum composite material including a copper portion and an aluminum portion connected to each other. The copper-aluminum composite material can be formed into a copper-aluminum composite plate (the copper-aluminum composite plate is a material which is formed by joining a copper plate and an aluminum plate together in a cold rolling mode, a hot rolling mode, an explosion cladding method, an explosion rolling method, a friction welding mode and the like and cannot be separated). Preferably, the body barrel may be formed of copper, and one of the body platform and the pole cap may be formed of a copper-aluminum composite material, the distribution structure of which will be described in detail below with respect to the copper and aluminum portions of the composite material. Therefore, the welding viscosity of copper materials such as the battery inner electrode lug (namely the electrode lug positioned in the battery main body) and the like is ensured, and the consistency of the materials of the side, away from the first side part, of the battery cover plate is kept.
The battery top cover will be described below for different mating manners of the main platform and the post cap, taking the cathode post 320 formed of copper-aluminum composite as an example:
first embodiment, referring to fig. 1 to 9, a battery top cover structure of first embodiment is shown.
As shown in fig. 6 to 9, the body platform is formed with a first through hole penetrating the body platform; the side part of utmost point post polar cap is formed with the first boss corresponding with first through-hole, and first boss inlays to be located first through-hole. The space that main part section of thick bamboo, main part platform and first boss enclose forms above-mentioned cavity.
In the first embodiment, a cross-sectional view of the structure of the cathode post 320 is obtained by cutting along a first plane (the first plane is a vertical plane in the direction shown in the figure) as shown in fig. 9. The cathode post 320 includes a cathode body 322 and a cathode cap 321. Preferably, the cathode body 322 is formed of copper (i.e., both the body barrel of the cathode body 322 and the body platform of the cathode body 322 are formed of copper). The cathode cap 321 is made of a copper-aluminum composite plate. The cathode cap 321 is formed with a cap copper portion 321b and a cap aluminum portion 321 a. The cap copper portion 321b is formed as a first boss and a portion of the cathode cap 321 that contacts the main platform of the cathode, and the cap aluminum portion 321a is disposed on a side of the cap facing away from the main platform of the cathode post 320. This ensures good welding adhesion between the cathode cap 321 and the cathode body 322.
Example two, referring to fig. 10-18, a battery top cap structure of example two is shown.
As shown in fig. 15 to 18, a second boss is formed on a side portion of the main body platform away from the first side portion, a second through hole corresponding to the second boss is formed on the pole cover, and the second through hole and the second boss are engaged with each other. The space enclosed by the main body cylinder and the main body platform forms the cavity.
In the second embodiment, a sectional view of the structure of the cathode post 320 is obtained by cutting along a first plane (the first plane is a vertical plane in the orientation shown in the figure) as shown in fig. 18. The cathode post 320 includes a cathode body 322 and a cathode cap 321. Preferably, the cathode cap 321 is formed of aluminum, the body platform of the cathode body 322 is formed of copper-aluminum composite, and the cathode body 322 is formed with a body aluminum portion 322a and a body copper portion 322 b. The body aluminum portion 322a is formed as a second boss and a portion of the body platform of the cathode body 322 that abuts the cathode cover 321. The body copper portion 322b is formed as a portion of the cathode body 322 other than the body aluminum portion 322 a. Likewise, good welding adhesion of both the cathode cap 321 and the cathode body 322 is ensured.
In addition, in an embodiment, as shown in fig. 1 and 10, the battery top cover further includes a sealing gasket, the sealing gasket is sleeved on the outer side of the pole, and the pole is disposed in the first hole through the sealing gasket. Preferably, as shown in fig. 3 to 5 and 12 to 14, the outer side of the sealing washer is formed with a groove distributed along the circumference of the sealing washer, and the inner side of the first hole is embedded in the groove and abuts against the bottom of the groove.
Preferably, the sealing gasket may be formed as a plastic ring 200, and the plastic ring 200 is subjected to a Nano-Molding process (e.g., Nano-Molding Technology, abbreviated as NMT Technology) such that the surface of the plastic is uniformly distributed with Nano-sized micro-pits. The surfaces of both the top cover plate 100 and the pole are subjected to nanocrystallization treatment, so that nano-scale particles are formed on the surfaces of the top cover plate and the pole. The sealing is realized through the characteristics of the nanometer surface, the assembly difficulty of the battery top cover is effectively reduced while the sealing performance is ensured, and the yield of the battery top cover assembly is improved.
In an embodiment, as shown in fig. 1 and 10, the battery top cap further includes an explosion-proof valve 110, the top cap plate 100 is formed with a second hole penetrating through the top cap plate 100, the explosion-proof valve 110 is formed into an explosion-proof sheet and a connecting edge distributed around the explosion-proof sheet, the shape of the explosion-proof sheet is adapted to the shape of the second hole, the connecting edge is hermetically arranged in the second hole, the explosion-proof sheet is formed with a notch, the thickness of the notch of the explosion-proof sheet is thinner than the other parts of the explosion-proof sheet, the battery is in a state that the pressure inside the battery is greater than a predetermined pressure, and the notch is about to rupture. The score may be formed as a plurality of radial lines radially distributed in the center of the rupture disk, or the score may be formed as a plurality of annular lines distributed in the circumferential direction of the rupture disk. Therefore, the safety of the battery is effectively improved.
In an embodiment, as shown in fig. 1 and 10, the battery top cover further includes an insulating part. The insulating part with top cover plate 100 towards the inside one side butt of battery, the insulating part be formed with the corresponding third hole in first hole supply utmost point post to run through, the insulating part be formed with the corresponding fourth hole in second hole to make explosion-proof valve 110 with the inside intercommunication of battery. In this way, the portions of the top cover plate 100 other than the exposed portions of the poles are insulated. Preferably, the insulating part may be formed as a plastic cover 400. The plastic cover 400 shown in fig. 1 and 10 is formed as a second rectangular plate, and it should be noted that the shapes of the plastic cover 400 and the top cover 100 may be adaptively adjusted according to the shape of the battery.
The embodiment of the application also provides a battery, which comprises a battery main body and the battery top cover in any embodiment, so that all beneficial technical effects of the battery top cover are achieved, and the details are not repeated.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A battery top cover for covering a battery body to form a battery, comprising:
a top cover plate (100), the top cover plate (100) including a first side portion facing the battery main body in a state in which the battery top cover is disposed on the battery main body,
the pole column is arranged on the top cover plate (100), a cavity is formed in the pole column, and the cavity comprises an opening which is open towards the side where the first side portion is located.
2. The battery top cap according to claim 1, wherein the top cap plate (100) is formed with a first hole penetrating the top cap plate (100), the terminal post is penetratingly provided in the first hole, the terminal post comprises:
a cylindrical portion penetrating the first hole;
the platform part is arranged at one end of the barrel part far away from the first side part, and the inner side part of the cavity comprises the inner side part of the barrel part and the side part of the platform part facing to the side where the first side part is located;
and the pole post cover is arranged on the side part of the platform part, which is back to the first side part.
3. The battery top cap of claim 2, wherein the post comprises:
a first pole formed of aluminum;
and the second pole is formed by copper or copper-aluminum composite material.
4. The battery top cap of claim 3,
the barrel portion of the second pole is formed of copper;
the platform part of the second pole is formed by copper, the pole cover of the second pole is formed by copper-aluminum composite materials and comprises a copper part and an aluminum part which are connected with each other, the copper part is combined with the platform part of the second pole, and the aluminum part is arranged on one side of the copper part, which is back to the platform part of the second pole; or the second utmost point post the utmost point post lid is formed by aluminium, the second utmost point post the platform portion is formed by copper aluminium combined material and including the copper part and the aluminium part of connecting each other, the aluminium part with utmost point post lid joint, the copper part set up in the back of aluminium part is to one side of utmost point post lid.
5. The battery top cap of claim 2,
the platform part is provided with a first through hole penetrating through the platform part; a first boss corresponding to the first through hole is formed on the side part, close to the pole, of the pole cover, and the first boss is embedded in the first through hole; or
The lateral part of the platform part, which is far away from the first lateral part, is provided with a second boss, the pole cover is provided with a second through hole corresponding to the second boss, and the second through hole is mutually embedded with the second boss.
6. The battery top cap of claim 2, wherein the post further comprises a flange disposed at an end of the barrel portion distal from the platform portion, the flange extending over an outer edge of the barrel portion and extending outward of the barrel portion.
7. The battery top cover according to claim 2, further comprising a sealing gasket, wherein the sealing gasket is sleeved on the outer side of the pole, and the pole is disposed in the first hole through the sealing gasket;
the outer side of the sealing washer is provided with a circle of grooves distributed along the circumferential direction of the sealing washer, and the inner side of the first hole is embedded into the grooves and is abutted against the bottoms of the grooves.
8. The battery top cap of claim 7,
the sealing washer is formed into plastic, and the plastic is subjected to nano-molding treatment, so that micro pits with nano-scale sizes are uniformly distributed on the surface of the plastic;
the surfaces of the top cover plate (100) and the pole are subjected to nanocrystallization treatment, so that nano-scale particles are formed on the surfaces of the top cover plate and the pole.
9. The battery top cap of claim 2, further comprising:
the explosion-proof valve (110), the said top cover plate (100) has second holes which run through the said top cover plate (100), the said explosion-proof valve (110) forms the explosion-proof sheet and connects the edge distributing a week along the explosion-proof sheet, the shape of the explosion-proof sheet and said second hole is adapted, set up in said second hole sealingly via said connecting edge, the said explosion-proof sheet has nick department, the thickness of the said nick department is thinner than other parts of the said explosion-proof sheet, the said battery is in the pressure greater than the predetermined pressure state in the said battery, the said nick department will rupture;
the insulating part, with the facing of lamina tecti (100) one side butt inside the battery, the insulating part be formed with the corresponding third hole in first hole supplies utmost point post runs through, the insulating part be formed with the corresponding fourth hole in second hole.
10. A battery comprising a battery main body and the battery top cover of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402978.9U CN216354654U (en) | 2021-09-30 | 2021-09-30 | Battery top cap and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122402978.9U CN216354654U (en) | 2021-09-30 | 2021-09-30 | Battery top cap and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216354654U true CN216354654U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122402978.9U Active CN216354654U (en) | 2021-09-30 | 2021-09-30 | Battery top cap and battery |
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| CN (1) | CN216354654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2021
- 2021-09-30 CN CN202122402978.9U patent/CN216354654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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