CN203071164U - Battery structure suitable for opening formation - Google Patents

Battery structure suitable for opening formation Download PDF

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Publication number
CN203071164U
CN203071164U CN2013200099357U CN201320009935U CN203071164U CN 203071164 U CN203071164 U CN 203071164U CN 2013200099357 U CN2013200099357 U CN 2013200099357U CN 201320009935 U CN201320009935 U CN 201320009935U CN 203071164 U CN203071164 U CN 203071164U
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China
Prior art keywords
hole
battery
substrate
opening
changes
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CN2013200099357U
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Chinese (zh)
Inventor
李瑶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen OptimumNano Energy Co Ltd
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Shenzhen OptimumNano Energy Co Ltd
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Priority to CN2013200099357U priority Critical patent/CN203071164U/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 structure suitable for opening formation. The battery structure comprises a case, and a cover body buckled on the battery case, wherein the cover body comprises a positive electrode end, a positive electrode upper insulation pad, a substrate, a positive electrode lower insulation pad and a positive electrode lead-out sheet from top to bottom, which are stacked and then riveted by a positive electrode lead-out fixing member; a liquid injection hole is formed in the substrate; a countersunk through hole is formed in the positive electrode lower insulation pad corresponding to the liquid injection hole; and a seal plug is also arranged on the liquid injection hole. In comparison with the prior art, the battery structure suitable for opening formation has the greatest advantage that one threaded liquid injection hole is formed in the end cover of the battery, and a screw for sealing the liquid injection hole is unscrewed during the formation process after the battery is sealed, so that gas generated during formation of the battery can escape through a slit between the screw and a screw hole to prevent electrolyte inside the battery from keeping contact with moisture in external air; and the stainless screw is screwed tightly after the formation finishes.

Description

The battery structure that a kind of suitable opening changes into
[technical field]
The utility model relates to technical field of lithium ion, relates in particular to the battery structure that a kind of suitable opening changes into.
[background technology]
Lithium ion battery has high-energy-density and various excellent properties, therefore uses 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 make its serviceability and fail safe more and more become the problem that people pay close attention to, study, and performance and security feature and its production technology is in close relations.
Chemical synthesis technology directly influences every index of lithium ion battery, the existing not good common problem of lithium ion battery serviceability has: the circulation consistency of battery is poor, often have phenomenons such as leakage, high current charge-discharge instability to take place, and causes the reason of these phenomenons and the structure of existing battery that much relations are arranged.Existing lithium ion battery generally all is to adopt the block design to guarantee safe; described battery cap generally is 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 the battery container this kind protected mode; though can be timely and effectively the heat of inside battery be obtained discharging the situation of having avoided battery to blast because pressure is excessive.But; the maximum weak point of this kind protected mode is: electrolyte and the back gas that produces of electric in-core portion's small amount of moisture reaction are discharged in the time of can't realizing changing into behind battery seal; this just causes recycling at battery, and internal pressure constantly raises in the process; because under the effect of in long-time, pressing; electrolyte leaks out or the electrolyte of vaporizing can break through diaphragm from housing and the sealing of cap sealed circle easily; and the outflow battery container makes battery failure outward, brings great potential safety hazard finally for the use of whole battery group.
In addition, the block of this kind structural design is in the 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 battery is assembled into battery pack, have very big influence the useful life to battery in long-time big electric current use, and this kind structure assembling difficulty, the maintenance of inconvenient battery pack.
In view of this, necessaryly provide battery structure that a kind of suitable opening changes into 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 structure that suitable opening that gas that battery produces inside when changing into is discharged changes into.
To achieve these goals, the battery structure that the utility model provides a kind of suitable opening to change into, it comprises housing and the lid that is fastened on the battery container, described lid from up to down forms by drawing the fixture riveted joint with positive electrode again after insulation cushion, substrate, anodal insulation cushion down and the stack of positive electrode lead-out tablet on positive electricity end, the positive pole, offer liquid injection hole on the described substrate, the anodal corresponding described liquid injection hole of insulation cushion down place offers the countersunk head through hole, also is installed on sealing plug on the described liquid injection hole.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, described liquid injection hole comprises the pad counterbore, and from pad counterbore fluid injection screwed hole recessed down, described sealing plug is sealed screw, before sealed screw precession fluid injection screwed hole, also be equiped with gasket seal at the pad counterbore.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, described substrate also comprises and runs through substrate through-hole and be used for the fixedly counterbore of burst disk cover sheet.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, described running through on the substrate through-hole is welded with burst disk in order to substrate through-hole is sealed with Laser Welding.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, described positive electricity end comprises the pedestal of double-screw bolt and rectangular shape, is symmetrically arranged with two first through holes on the described pedestal.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, the shape of insulation cushion is consistent with the pedestal of positive electricity end on the described positive pole, and corresponding first through hole offers second through hole on it.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, also offer the 3rd through hole corresponding to second through hole on the described substrate.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, insulation cushion is consistent with substrate shape under the described positive pole, its upper surface is convex to be provided with two boss through holes, and when insulation cushion under the positive pole and substrate in combination, described boss through hole pierces into the 3rd through hole of substrate.
Be fit to a kind of improvement of the battery structure that opening changes into as the utility model, described positive electrode lead-out tablet comprises the matrix of rectangular shape, the contact site that under a side direction of matrix, extends, and wherein, described matrix also corresponding boss through hole offers the 4th through hole.
Compared with prior art, the battery structure sharpest edges that the suitable opening of the utility model changes into are: the end cap at battery is provided with a screw thread liquid injection hole, in the process that behind battery seal, changes into the screw of this liquid injection hole sealing is unscrewed, the gas that produces in battery changes into will be discharged from the slit of screw and screw like this, thereby has also avoided the electrolyte of inside battery to contact with moisture in the extraneous air; Again this stainless steel sealed screw is tightened after the end to be changed and got final product.
[description of drawings]
Fig. 1 is fit to the three-dimensional exploded view of the lid of the battery structure that opening changes into for the utility model;
Fig. 2 is fit to the battery structure A cutaway view partly that opening changes into for the utility model;
Fig. 3 is fit to the stereogram of the battery structure that opening changes into for the utility model.
[embodiment]
Below in conjunction with accompanying drawing, the coating machine of the utility model lithium-ion-power cell is elaborated.
See also Fig. 1-3, the battery structure 100 that the utility model provides a kind of suitable opening to change into, it comprises housing 10 and the lid 20 that is fastened on the battery container, and described lid 20 from up to down forms by drawing fixture 80 riveted joints with positive electrode again after insulation cushion 40, substrate 50, anodal insulation cushion 60 down and 70 stacks of positive electrode lead-out tablet on positive electricity end 30, the positive pole.
Positive electricity end 30 comprises the pedestal 32 of double-screw bolt 31 and rectangular shape, is symmetrically arranged with two first through holes 33 on the described pedestal 32.The shape of insulation cushion 40 is consistent with the pedestal of positive electricity end 30 on the positive pole, and corresponding first through hole 33 offers second through hole 41 on it.
Substrate 50 is rounded laminated structure roughly, and it offers liquid injection hole 51, run through substrate through-hole 52 and be used for the counterbore 53 of fixing burst disk cover sheet and corresponding to the 3rd through hole 54 of second through hole.Wherein, described liquid injection hole 51 comprises pad counterbore 511, from pad counterbore fluid injection screwed hole 512 recessed down, sealing plug also is installed in the fluid injection screwed hole 512, in the present embodiment, the sealing plug of selecting for use is sealed screw 513, before sealed screw 513 precession fluid injection screwed holes 512, also is equiped with gasket seal 514 at pad counterbore 511.Aforesaid running through on substrate 52 through holes is welded with burst disk 55 in order to substrate through-hole 52 is sealed with Laser Welding.
Insulation cushion 60 is consistent with substrate shape under the described positive pole, its upper surface is convex to be provided with two boss through holes 61, when insulation cushion under the positive pole and substrate in combination, described boss through hole 61 pierces into the 3rd through hole 54 of substrate, in addition, anodal insulation cushion 60 down also offers a plane through hole 62 in the position that correspondence runs through substrate through-hole, offers countersunk head through hole 63 at the liquid injection hole place of counterpart substrate.
Positive electrode lead-out tablet 70 comprises the matrix 71 of rectangular shape, the contact site 72 that under a side direction of matrix, extends, and wherein, described matrix also corresponding boss through hole offers the 4th through hole 73.Positive electrode is drawn fixture 80 and is rivet arrangement, and it comprises the head of a nail 81 and riveted joint bar 82.
During assembling, positive electrode is drawn first through hole of insulation cushion second through hole and positive electricity end on the 3rd through hole, positive terminal of boss through hole, the substrate of bottom-up the 4th through hole that passes the positive electrode lead-out tablet respectively of fixture, anodal insulation cushion down, the stainless steel sealed screw is added in the gasket seal precession fluid injection screwed hole again.In the present embodiment, the battery structure that described opening changes into comprises that two positive electrodes draw fixture.Correspondingly, the quantity of first through hole of insulation cushion second through hole and positive electricity end also is respectively two on the 3rd through hole of the boss through hole of the 4th through hole of described positive electrode lead-out tablet, anodal insulation cushion down, substrate, the positive terminal.The quantity of above-mentioned each element also can be selected one to more than three and three according to concrete applied environment.
In the utility model, the upper and lower insulation cushion of positive terminal, burst disk cover sheet, all adopt macromolecular material to make, can under 250 ℃ of high temperature deformation not take place, thereby can play the better seal effect.Because positive electrode lead-out tablet and positive electrode are drawn fixture and be metallic aluminium as conductor, therefore, its area of passage is several times of tradition block, also can solve problem of temperature rise when discharging and recharging so both can solve high current charge-discharge.
In the utility model, burst disk, burst disk cover sheet all are fixed on the substrate, and described burst disk cover sheet also is to be made by high molecular synthetic material.Described burst disk adopts thinner metallic nickel or stainless steel substrates to make; because thinner metallic nickel or stainless steel are soft, so when battery breaks down, when its inner air pressure that produces gas reaches certain numerical value; gas can break through diaphragm, and namely diaphragm just can disconnect along indentation portion.
The utility model is to be fit to the structure that the lithium battery opening changes into, be not restricted to described in specification and the execution mode, therefore for the personnel of familiar field, can easily realize additional advantage and modification, so under the situation of the spirit and scope that do not deviate from 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 (9)

1. battery structure that suitable opening changes into, it comprises housing and the lid that is fastened on the battery container, described lid from up to down forms by drawing the fixture riveted joint with positive electrode again after insulation cushion, substrate, anodal insulation cushion down and the stack of positive electrode lead-out tablet on positive electricity end, the positive pole, it is characterized in that: offer liquid injection hole on the described substrate, the anodal corresponding described liquid injection hole of insulation cushion down place offers the countersunk head through hole, also is installed on sealing plug on the described liquid injection hole.
2. the battery structure that changes into of suitable opening as claimed in claim 1, it is characterized in that: described liquid injection hole comprises the pad counterbore, from pad counterbore fluid injection screwed hole recessed down, described sealing plug is sealed screw, before sealed screw precession fluid injection screwed hole, also be equiped with gasket seal at the pad counterbore.
3. the battery structure that changes into of suitable opening as claimed in claim 1, it is characterized in that: described substrate also comprises and runs through substrate through-hole and be used for the fixedly counterbore of burst disk cover sheet.
4. the battery structure that changes into of suitable opening as claimed in claim 3, it is characterized in that: described running through on the substrate through-hole is welded with burst disk in order to substrate through-hole is sealed with Laser Welding.
5. the battery structure that changes into of suitable opening as claimed in claim 1, it is characterized in that: described positive electricity end comprises the pedestal of double-screw bolt and rectangular shape, is symmetrically arranged with two first through holes on the described pedestal.
6. the battery structure that changes into of suitable opening as claimed in claim 5, it is characterized in that: the shape of insulation cushion is consistent with the pedestal of positive electricity end on the described positive pole, and corresponding first through hole offers second through hole on it.
7. the battery structure that changes into of suitable opening as claimed in claim 6 is characterized in that: also offer the 3rd through hole corresponding to second through hole on the described substrate.
8. the battery structure that changes into of suitable opening as claimed in claim 7, it is characterized in that: insulation cushion is consistent with substrate shape under the described positive pole, its upper surface is convex to be provided with two boss through holes, when insulation cushion under the positive pole and substrate in combination, described boss through hole pierces into the 3rd through hole of substrate.
9. the battery structure that changes into of suitable opening as claimed in claim 8, it is characterized in that: described positive electrode lead-out tablet comprises the matrix of rectangular shape, the contact site that extends under a side direction of matrix, wherein, described matrix also corresponding boss through hole offers the 4th through hole.
CN2013200099357U 2013-01-09 2013-01-09 Battery structure suitable for opening formation Active CN203071164U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2013200099357U CN203071164U (en) 2013-01-09 2013-01-09 Battery structure suitable for opening formation

Publications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565068A (en) * 2017-07-04 2018-01-09 合肥力翔电池科技有限责任公司 A kind of cylindrical battery cover plate
CN108281578A (en) * 2017-12-07 2018-07-13 国轩新能源(苏州)有限公司 Cylindrical battery vibration proof type electric lids
CN109037504A (en) * 2018-06-11 2018-12-18 合肥力翔电池科技有限责任公司 A kind of cylindrical lithium battery cover board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565068A (en) * 2017-07-04 2018-01-09 合肥力翔电池科技有限责任公司 A kind of cylindrical battery cover plate
CN108281578A (en) * 2017-12-07 2018-07-13 国轩新能源(苏州)有限公司 Cylindrical battery vibration proof type electric lids
CN108281578B (en) * 2017-12-07 2021-06-01 国轩新能源(苏州)有限公司 Cylindrical battery vibration-proof electrode cover plate
CN109037504A (en) * 2018-06-11 2018-12-18 合肥力翔电池科技有限责任公司 A kind of cylindrical lithium battery cover board

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Legal Events

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

Denomination of utility model: Battery structure suitable for opening formation

Effective date of registration: 20141218

Granted publication date: 20130717

Pledgee: Export Import Bank of China

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

Registration number: 2014990001097

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171025

Granted publication date: 20130717

Pledgee: Export Import Bank of China

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

Registration number: 2014990001097

PC01 Cancellation of the registration of the contract for pledge of patent right
PP01 Preservation of patent right

Effective date of registration: 20180428

Granted publication date: 20130717

PP01 Preservation of patent right
PD01 Discharge of preservation of patent

Date of cancellation: 20210428

Granted publication date: 20130717

PP01 Preservation of patent right

Effective date of registration: 20210428

Granted publication date: 20130717

PD01 Discharge of preservation of patent
PP01 Preservation of patent right