CN203398176U - Battery cap structure suitable for opening formation - Google Patents

Battery cap structure suitable for opening formation Download PDF

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Publication number
CN203398176U
CN203398176U CN201320291536.4U CN201320291536U CN203398176U CN 203398176 U CN203398176 U CN 203398176U CN 201320291536 U CN201320291536 U CN 201320291536U CN 203398176 U CN203398176 U CN 203398176U
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CN
China
Prior art keywords
cover plate
cap structure
ring
hole
battery cap
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Expired - Fee Related
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CN201320291536.4U
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Chinese (zh)
Inventor
李瑶
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Shenzhen OptimumNano Energy Co Ltd
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Shenzhen OptimumNano Energy Co Ltd
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Priority to CN201320291536.4U priority Critical patent/CN203398176U/en
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Publication of CN203398176U publication Critical patent/CN203398176U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a battery cap structure suitable for opening formation. The battery cap structure suitable for opening formation comprises an upper cover plate, an anti-explosion sheet, a sealing outer ring and a gasket, wherein cover plate burrs are arranged on the edge of the upper cover plate; anti-explosion sheet roll rims are arranged at the periphery of the anti-explosion sheet; the upper cover plate, the anti-explosion sheet and the gasket are sequentially fit together up and down and are riveted and reinforced so as to form an assembly by virtue of the cover plate burrs and the anti-explosion sheet roll rims; the sealing outer ring is coated on the outer edge of the assembly; a first through hole and a second through hole are respectively formed in corresponding parts of the upper cover plate and the anti-explosion sheet; at least one sealing plug is arranged in the first through hole and the second through hole. Compared with the prior art, the battery cap structure suitable for opening formation has the advantages that at least one sealing plug is arranged in the first through hole and the second through hole, extends out of the second through hole and then passes through a grid of the gasket, so that gas generated in the battery formation is discharged from the sealing plug, and electrolyte in a battery is prevented from being in contact with moisture in external air; after the formation is ended, the sealing plug is completely sealed.

Description

The battery cap structure that is applicable to open formation
[technical field]
The utility model relates to technical field of lithium ion, relates in particular to a kind of battery cap structure of applicable open formation.
[background technology]
Lithium ion battery has high-energy-density and various excellent properties, and therefore application is more and more universal.Especially bar shape lithium ion battery, it has standardized size, ripe manufacturing process and manufacturing equipment, occupies important share in lithium ion battery market.
The extensive application of lithium ion battery, makes its serviceability and fail safe more and more become that people pay close attention to, the problem of research, and performance and security feature and its structure, production technology are in close relations.Chemical synthesis technology directly affects the indices of lithium ion battery, the not good common problem of existing lithium ion battery serviceability has: the phenomenons such as the circulation consistency of battery is poor, often have leakage, high current charge-discharge is unstable occur, and cause the reason of these phenomenons and the structure of existing battery to have much relations.
Existing lithium ion battery is all generally to adopt block design to guarantee safe; described battery cap is generally provided with a screening glass; screening glass is that metallic aluminium is made, and screening glass is provided with diaphragm, when battery generation electric heating is out of control; after inner pressure of battery raises; the electrolyte of vaporization just can break through diaphragm, and flows out outside battery container this kind of protected mode; although can timely and effectively the heat of inside battery be discharged to the situation of having avoided battery to blast because pressure is excessive.But; the maximum weak point of this kind of protected mode is: after battery seal, cannot realize the gas producing after a small amount of reaction of moisture of electrolyte and battery core inside while changing into and discharge; this just causes internal pressure in circulating battery use procedure constantly to raise; under the effect of pressing in long-time; electrolyte easily leaks out or the electrolyte of vaporizing can break through diaphragm from housing and the sealing of cap sealed circle; and flow out battery container and make battery failure outward, bring great potential safety hazard finally to the use of whole battery pack.In addition, the block of this kind of structural design is in large current density process, the temperature rise of drawing lug and laser welding place of block is higher, temperature rise increases with the increase of electric current, if this kind of battery is assembled into battery pack, in long-time large electric current use procedure to having a great impact the useful life of battery, and this kind of structure assembling difficulty, the maintenance of inconvenient battery pack.
In view of this, necessary a kind of battery cap structure of applicable open formation that provides is to address the above problem.
[utility model content]
It is a kind of simple in structure that the purpose of this utility model is to provide, and can guarantee the battery cap structure of the applicable open formation of the gas discharge that battery produces inside when changing into.
To achieve these goals, the utility model provides a kind of battery cap structure of applicable open formation, comprise upper cover plate, burst disk, sealed outer ring and packing ring, the edge of described upper cover plate is provided with cover plate burr, the surrounding of burst disk is provided with burst disk crimping, described upper cover plate, burst disk, packing ring fits together up and down successively and relies on cover plate burr and burst disk crimping riveted to be reinforced and forms an assembly, described sealed outer ring is coated on the outward flange of aforementioned assembly, described upper cover plate and burst disk are respectively equipped with first in corresponding position, two through holes, at least one sealing plug is placed in first, in two through holes.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, described upper cover plate is step disk, it is provided with an annular base portion, and the annular inboard edge of base portion raises up and forms rake and circular top, and rake is provided with cover board hole.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, described burst disk adopts metal aluminium flake to make ,Qi center and is provided with protruding diaphragm, and the surrounding of the diaphragm of described projection is provided with two-way indentation.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, described sealed outer ring is step hollow cylindrical, wherein enlarged diameter is blind end, and directly less is maintenance end, and blind end forms contraction flow region near slightly inside contraction of the outer wall that keeps end place.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation; between described upper cover plate and burst disk, be also provided with ring plate; in the middle of described ring plate, be provided with a ring plate hole; the size in described ring plate hole and diaphragm in the same size; this ring plate Kong position is also corresponding with the position of diaphragm; the surrounding that described ring plate Kong pushes down at edge diaphragm is provided with two-way indentation place, is also provided with the 3rd through hole of corresponding first and second through hole in ring plate.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, the battery cap structure of described applicable open formation also includes orifice plate, and described orifice plate is round sheet, which is provided with three air-vents.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, described packing ring is ring-shaped gate trellis.
As the utility model, be applicable to a kind of improvement of the battery cap structure of open formation, described sealing plug is formed by stacking by the cylinder of two hollow concentrics, its at least one end be blind end, it passes in the grid of packing ring from the second through hole extends.
Compared with prior art, the battery cap structure sharpest edges that the utility model is applicable to open formation are: upper cover plate and burst disk are respectively equipped with first and second through hole in corresponding position, at least one sealing plug is placed in first and second through hole, described sealing plug also passes in the grid of packing ring from the second through hole extends, the gas that changes into middle generation at battery like this will be discharged from sealing plug, thereby has also avoided the electrolyte of inside battery and the contact with moisture in extraneous air; After end to be changed, again this sealing plug is sealed completely.
[accompanying drawing explanation]
Fig. 1 is the battery cap structural upright exploded view that the utility model is applicable to open formation;
Fig. 2 is the three-dimensional assembly that the utility model is applicable to the battery cap structure of open formation;
Fig. 3 is the three-dimensional combination figure at another visual angle of the utility model battery cap structure of being applicable to open formation;
Fig. 4 is the vertical view that the utility model is applicable to the battery cap structure of open formation.
[embodiment]
Below in conjunction with accompanying drawing, the battery cap structure that the utility model is applicable to open formation elaborates.
Refer to Fig. 1-3, the utility model provides a kind of battery cap structure 100 of applicable open formation, and it is for being fastened on battery container.Described battery cap structure 100, it comprises upper cover plate 10, burst disk 20, sealed outer ring 30 and packing ring 40, described upper cover plate 10 edge is provided with cover plate burr, the surrounding of burst disk 20 is provided with burst disk crimping, described upper cover plate 10, burst disk 20, packing ring 40 fit together up and down successively and rely on cover plate burr and burst disk crimping riveted to be reinforced and form an assembly, and described sealed outer ring 30 is coated on the outward flange of aforementioned assembly.
In the ordinary course of things, in order to strengthen the intensity of assembly, between aforesaid upper cover plate 10 and burst disk 20, be also provided with ring plate 50, in the middle of described ring plate 50, be provided with a ring plate hole 51.
Upper cover plate 10 is step disk, it is provided with an annular base portion 11, the annular inboard edge of base portion raises up and forms rake 12 and circular top 13, and rake 11 is provided with cover board hole 14, and described upper cover plate 10 also offers the first through hole 15 that runs through two end face.
Burst disk 20 adopts thinner metal aluminium flake to make ,Qi center and is provided with protruding diaphragm 21, and the surrounding of the diaphragm 21 of described projection is provided with two-way indentation, also offers second through hole 22 corresponding with the first through hole 15 in burst disk 20.
The size in described ring plate hole 51 and diaphragm 21 in the same size; this ring plate Kong51 position is also corresponding with diaphragm 21 position; the surrounding that described ring plate Kong51 pushes down at edge diaphragm 21 is provided with two-way indentation place, is also provided with the 3rd through hole 52 of corresponding first and second through hole in ring plate 50.
Sealed outer ring 30 is step hollow cylindrical, and wherein enlarged diameter is blind end, and directly less is maintenance end, and blind end forms contraction flow region near slightly inside contraction of the outer wall that keeps end place.
Packing ring 40 is ring-shaped gate trellis, it annular ring (41,42) that comprises two concentrics with for being connected and by the linking arm of annular ring decile 43.
Sealing plug 60 is formed by stacking by the cylinder of two hollow concentrics, and it is through in the grid 44 of packing ring 40 from the second through hole extends, and sealing plug 60 one end can also form blind end.The battery cap structure of described applicable open formation also includes orifice plate 70, and described orifice plate 70 is round sheet, which is provided with three air-vents 71.
During assembling, first upper cover plate 10, burst disk 20 and packing ring 40 are relied on to the design feature of himself the formation assembly that is superimposed, under normal conditions, in order to strengthen the intensity of assembly, between aforesaid upper cover plate 10 and burst disk 20, be also provided with ring plate 50.In the process of assembling, must guarantee that first, second and third through hole (15,22,52) arranging respectively in aforementioned upper cover plate 10, burst disk 20 and ring plate 50 is corresponding one by one, aforementioned assembly is laid in the step groove of putting sealed outer ring 30 again, described sealed outer ring 30 is not only the edge for coated assembly, the more important thing is assembly and battery container insulation isolation.Finally, in the through hole that first, second and third through hole on sealing plug 60 insertion assemblys is formed, and with laser welding technology, sealing plug and assembly are welded together.Described sealing plug 60 generally can extend out from the second through hole, and passes the grid 44 of packing ring.In the process changing into after battery seal, battery changes into the gas of middle generation and will from sealing plug 60, discharge, and after discharge, then seals sealing plug 60 with steel ball or other material, thereby has also avoided the electrolyte of inside battery and the contact with moisture in extraneous air.
The utility model is the structure that is applicable to lithium battery open formation, be not restricted to described in specification and execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, therefore in the situation that do not deviate from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.

Claims (8)

1. the battery cap structure of an applicable open formation, comprise upper cover plate, burst disk, sealed outer ring and packing ring, the edge of described upper cover plate is provided with cover plate burr, the surrounding of burst disk is provided with burst disk crimping, described upper cover plate, burst disk, packing ring fits together up and down successively and relies on cover plate burr and burst disk crimping riveted to be reinforced and forms an assembly, described sealed outer ring is coated on the outward flange of aforementioned assembly, it is characterized in that: described upper cover plate and burst disk are respectively equipped with first in corresponding position, two through holes, at least one sealing plug is placed in first, in two through holes.
2. the battery cap structure of applicable open formation as claimed in claim 1, it is characterized in that: described upper cover plate is step disk, it is provided with an annular base portion, and the annular inboard edge of base portion raises up and forms rake and circular top, and rake is provided with cover board hole.
3. the battery cap structure of applicable open formation as claimed in claim 1, is characterized in that: described burst disk adopts metal aluminium flake to make ,Qi center and is provided with protruding diaphragm, and the surrounding of the diaphragm of described projection is provided with two-way indentation.
4. the battery cap structure of applicable open formation as claimed in claim 1, it is characterized in that: described sealed outer ring is step hollow cylindrical, wherein enlarged diameter is blind end, and directly less is maintenance end, and blind end forms contraction flow region near slightly inside contraction of the outer wall that keeps end place.
5. the battery cap structure of applicable open formation as claimed in claim 3; it is characterized in that: between described upper cover plate and burst disk, be also provided with ring plate; in the middle of described ring plate, be provided with a ring plate hole; the size in described ring plate hole and diaphragm in the same size; this ring plate Kong position is also corresponding with the position of diaphragm; the surrounding that described ring plate Kong pushes down at edge diaphragm is provided with two-way indentation place, is also provided with the 3rd through hole of corresponding first and second through hole in ring plate.
6. the battery cap structure of applicable open formation as claimed in claim 1, is characterized in that: the battery cap structure of described applicable open formation also includes orifice plate, and described orifice plate is round sheet, which is provided with three air-vents.
7. the battery cap structure of the arbitrary applicable open formation as described in claim 1-6, is characterized in that: described packing ring is ring-shaped gate trellis, it annular ring that comprises two concentrics with for being connected and by the linking arm of annular ring decile.
8. the battery cap structure of applicable open formation as claimed in claim 7, is characterized in that: described sealing plug is formed by stacking by the cylinder of two hollow concentrics, its at least one end be blind end, it passes in the grid of packing ring from the second through hole extends.
CN201320291536.4U 2013-05-24 2013-05-24 Battery cap structure suitable for opening formation Expired - Fee Related CN203398176U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320291536.4U CN203398176U (en) 2013-05-24 2013-05-24 Battery cap structure suitable for opening formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320291536.4U CN203398176U (en) 2013-05-24 2013-05-24 Battery cap structure suitable for opening formation

Publications (1)

Publication Number Publication Date
CN203398176U true CN203398176U (en) 2014-01-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111564578A (en) * 2020-05-26 2020-08-21 大连中比能源科技有限公司 Battery cap, lithium battery and assembling method of lithium battery
CN113875056A (en) * 2020-02-06 2021-12-31 株式会社Lg新能源 Method for manufacturing secondary battery and method for manufacturing battery pack including the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113875056A (en) * 2020-02-06 2021-12-31 株式会社Lg新能源 Method for manufacturing secondary battery and method for manufacturing battery pack including the same
CN111564578A (en) * 2020-05-26 2020-08-21 大连中比能源科技有限公司 Battery cap, lithium battery and assembling method of lithium battery

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C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: The battery cap structure that is applicable to open formation

Effective date of registration: 20141218

Granted publication date: 20140115

Pledgee: Export Import Bank of China

Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing

Registration number: 2014990001097

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PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171025

Granted publication date: 20140115

Pledgee: Export Import Bank of China

Pledgor: Shenzhen Optimum Battery Co.,Ltd.|Zhao Bing

Registration number: 2014990001097

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