CN101814589B - Explosion-proof cap of micro-resistance cylindrical lithium ion battery - Google Patents
Explosion-proof cap of micro-resistance cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN101814589B CN101814589B CN201010164333XA CN201010164333A CN101814589B CN 101814589 B CN101814589 B CN 101814589B CN 201010164333X A CN201010164333X A CN 201010164333XA CN 201010164333 A CN201010164333 A CN 201010164333A CN 101814589 B CN101814589 B CN 101814589B
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- Prior art keywords
- explosion
- cap
- pressure disc
- rupture pressure
- orifice plate
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- Expired - Fee Related
Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 3
- 238000005452 bending Methods 0.000 claims description 23
- 229910000679 solder Inorganic materials 0.000 claims description 10
- 239000010754 BS 2869 Class F Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract 12
- 238000004880 explosion Methods 0.000 description 12
- 238000007373 indentation Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention relates to an explosion-proof cap of a micro-resistance cylindrical lithium ion battery. The explosion-proof cap comprises an upper cap, a gasket, an explosion-proof membrane with a wall body, an orifice plate and a sealing ring. A plurality of air holes are arranged on the upper cap. The wall body of the explosion-proof membrane is bent and wraps the gasket and the upper cap in the cavity of the explosion-proof membrane. After the explosion-proof membrane wraps the gasket and the upper cap, the explosion-proof membrane is embedded in the sealing ring coated with glue. The orifice plate is embedded at the bottom surface of the sealing ring. The orifice plate is welded with the explosion-proof membrane through laser spot welding. A circular welding platform which protrudes downward is arranged on the bottom surface of the explosion-proof membrane. A prestressed pressure relief ring is formed between the circular welding platform and the bottom surface of the explosion-proof membrane. In combination with the cutting of the prestressed pressure relief ring along a sharp spiny flanged edge in the gasket, the flanging of the cap edge of the upper cap and the tight welding between a convex welding spot on the cap edge and the bent wall body of the explosion-proof membrane, the invention realizes that the explosion-proof membrane can be exploded open when being turned over and the overall internal resistance of the cap is reduced, and has the advantages that the structure is simple, compact and stable, the deformation and the misplacement are not apt to occur, the internal resistance of the cap is low, the battery performance is high, the explosion-proof membrane can be normally exploded open to relieve pressure after the explosion-proof membrane is turned over, the explosion-proof performance is stable and the service life is long.
Description
Technical field
The present invention relates to a kind of cylindrical lithium ion cell cap, is a kind of little resistance, without explosion cylindrical lithium ion battery explosion-proof cap specifically.
Background technology
Lithium ion battery cover is the critical component of lithium ion battery, and it is directly connected to battery reliability, useful life, amount of capacity, producers and consumers and produces safe in utilization.Existing column lithium ion battery block is made up of loam cake, pad, explosion-proof diaphragm, orifice plate, sealing ring; After the improvement of battery plus-negative plate material technology; The technology that tradition uses the heating of PTC pad control battery to expand is superseded basically; Mainly be because the internal resistance of PTC pad (high-temperature thermistor) own is bigger, have a strong impact on battery capacity and the number of times that discharges and recharges capable of circulation.In order to improve the fail safe of battery cap; Continue to use the frame mode of PTC pad, the PTC pad is replaced with ring-type aluminium backing or copper nickel plating ring pad etc., rupture pressure disc is with the body of wall burst disk instead; And by being with the body of wall burst disk pad, loam cake to be bundled together the sealing ring of putting into inner gluing; From the negative orifice plate and burst disk are passed through laser welding, compare traditional lithium electricity block, the block internal resistance is reduced to below the 1m Ω from 10m Ω.
Like the patent No. is the disclosed novel explosion-proof cover cap for high-time discharging column lithium ion battery of CN200920113873.8; Adopt to be provided with in the hollow sealing body and have the ring-type indentation and the lug boss lower edge is the explosion-proof valve of platform structure; The explosion-proof valve periphery is provided with protruding bound edge, and this bound edge adopts mould that top cover is encased fully.When the inside battery gas pressure increases to setup pressure value; Explosion-proof valve is by the upwards upset of ring-type indentation place, and upwards overturning orifice plate and explosion-proof valve middle deck to be come off form to the arc convex portion that extends below and open circuit in the explosion-proof valve middle part, presses continuation to increase in the back of opening circuit; When increasing to safety value; Explosion-proof valve pops and can avoid explosion accident, and its weak point is: after arc convex portion upwards overturns, under gas pressure, be compelled to expand to prolong to cover the top cover pore easily because material softens through high annealing; The pressure release of ring-type indentation place was lost efficacy can't open pressure release, causes battery explosion; Do not adopt pad between explosion-proof valve and top cover; The block internal resistance can be reduced to 0.5m Ω; But explosion-proof valve upwards the upset back since high annealing more large tracts of land cover the top cover pore; Do not have gasket construction block bulk strength this moment and reduce, top cover under high pressure is prone to bulk deformation disengaging hollow sealing body and causes battery explosion, and security performance is low.
In addition; When cell package block and box hat; Adopt mould radially pressing box hat and block, block produces and receives radial pressure, radial pressure to reach the cap sealed circle; The sealing ring distortion is with irregular orifice plate and the rupture pressure disc of being passed to of radial pressure, and the easy dislocation of orifice plate or rupture pressure disc is broken off both positive and negative polarity in advance or rupture pressure disc abnormal deformation generation explosion unlatching causes battery to be scrapped; And the rupture pressure disc abnormal deformation makes the indentation place closed, and opening pressure is infinitely great, can't normally open the battery explosive when causing inner pressure of battery to increase.
Summary of the invention
Can't normally open pressure release in order to solve in the prior art lithium ion battery cover rupture pressure disc upset back indentation; Block internal resistance reduction and capping structure are stable can't be taken into account; Battery life is short; And the rupture pressure disc of block yieldingly breaks, rupture pressure disc and orifice plate be prone to dislocation and rupture and cause that battery is scrapped, the rupture pressure disc deformable folding causes drawbacks such as battery explosion during the encapsulation of block and housing; The purpose of this invention is to provide the pressure release that can normally pop after a kind of rupture pressure disc overturns, block internal resistance reduction and capping structure are stable takes into account the battery long service life; Rupture pressure disc and orifice plate did not have distortion, dislocation-free when block encapsulated with housing, battery anti-explosion stable performance, production explosion-proof cap of micro-resistance cylindrical lithium ion battery safe in utilization.
The technical scheme that the present invention adopts is: a kind of explosion-proof cap of micro-resistance cylindrical lithium ion battery; The rupture pressure disc, orifice plate and the sealing ring that comprise upper cap, pad, band body of wall; Upper cap is provided with a plurality of pores, and the body of wall bending of rupture pressure disc is wrapped in pad and upper cap in the rupture pressure disc cavity, and the rupture pressure disc behind the above-mentioned parcel embeds and scribbles in the sealing ring of glue; The bottom surface of sealing ring is packed with orifice plate; Orifice plate and rupture pressure disc laser spot welding, its technical characterictic are that the bottom surface of said rupture pressure disc is provided with the circular weld platform to lower convexity, form between circular weld platform and the rupture pressure disc bottom surface and answer the pressure release ring in advance.When cell internal pressure increases; Rupture pressure disc circular weld platform is overturn to the upper cap direction by cell internal pressure; When the circular weld platform is stressed when reaching rupture pressure disc and orifice plate pad separating pressure, the fracture of the pad of rupture pressure disc and orifice plate, the circular weld platform of rupture pressure disc is upset upwards; Cell internal pressure moment reduces continued and increases; The stressed lasting increase of circular weld platform; When the circular weld platform is stressed when reaching rupture pressure disc bottom surface circular weld platform and answering the pressure release ring to pop pressure in advance, to answer the pressure release ring to pop in advance and make circular weld platform and the disengagement of rupture pressure disc bottom surface, cell internal pressure is by the pressure release of upper cap pore; No battery explosion hidden danger, safe in utilization.
Said upper cap shade upper surface evenly is provided with two solder joints with raising, two bending body of wall ultrasonic bonding with the solder joint and the rupture pressure disc of raising.Upper cap and rupture pressure disc after the welding are connected as a single entity, and both connect closely, have eliminated gap internal resistance each other, have reduced the whole internal resistance of block.
Said upper cap shade is provided with flange upwards.When welding rupture pressure disc and upper cap, there are interaction force in the flange of upper cap and rupture pressure disc bending body of wall bending part, and it is neat to help improving rupture pressure disc body of wall bending part profile, is convenient to the installation of rupture pressure disc and sealing ring.
Be equipped with in the said pad with rupture pressure disc and answer the corresponding sharp thorn-like flange of pressure release ring position in advance.When the circular weld platform is stressed when reaching rupture pressure disc bottom surface circular weld platform and answering the pressure release ring to pop pressure in advance; Sharp thorn-like flange plays the cutting knife effect to answering the pressure release ring in advance; Guarantee that circular weld platform and rupture pressure disc bottom surface throw off, advance one ensured battery the anti-explosion safety performance.
Said sealing ring comprises orifice plate circle and both positive and negative polarity insulated ring, and the orifice plate circle is connected through the plastics intercell connector more than two and forms hollow out formula sealing ring in the positive and negative class F insulation circle.The orifice plate circle is connected through the plastics intercell connector with positive and negative class F insulation circle, and during positive and negative class F insulation circle stress deformation, rock deformation pressure does not have influence to the orifice plate circle, and the orifice plate circle is indeformable, guarantees that the welding of orifice plate and circular weld platform is firm, does not have distortion, dislocation.
Adopt above technical scheme, the invention has the beneficial effects as follows:
1, when inside battery pressure-bearing, temperature rising; The extensible deflection of circular weld platform of rupture pressure disc bottom surface is little; Pop in the process at the stressed rupture pressure disc that is turned to of rupture pressure disc, answer the pressure release ring stressed all the time in advance between rupture pressure disc and the circular weld platform, answer in advance when the pressure release ring is stressed to reach fracture pressure and rupture; The circular weld platform pops from rupture pressure disc and makes the inside battery pressure release; The circular weld platform of trace extensional is difficult for stopping up the upper cap pore when the upper cap direction is extended, and battery does not have hidden peril of explosion, and security performance is high; Be equipped with in the pad with rupture pressure disc and answer the corresponding sharp thorn-like flange of pressure release ring position in advance; Continue in the loading process in circular weld platform upset back; The circular weld platform is stressed to be reached rupture pressure disc bottom surface circular weld platform and answers the pressure release ring pressure that pops in advance; This moment, sharp thorn-like flange played the cutting knife effect to answering the pressure release ring in advance, had guaranteed that further the circular weld platform pops from rupture pressure disc, has improved battery safety;
2, the upper cap shade is provided with flange upwards; Flange that the upper cap shade makes progress and rupture pressure disc body of wall bending part have interaction force; Body of wall bending part transformation rule, attractive in appearance has been avoided the body of wall bending not have opposition and has been caused bending part fold and irregular deformation that the sealing property of sealing ring and body of wall is reduced; Upper cap shade upper surface evenly is provided with two solder joints with raising; Two bending body of wall ultrasonic bonding with the solder joint and the rupture pressure disc of raising; Rupture pressure disc body of wall parcel contact firmness and overall structure crushing resistance have been improved; Cooperate flange that the upper cap shade makes progress also with the bending body of wall ultrasonic bonding of rupture pressure disc, electric current is divided into two-way in the block, one road flow through upper cap, bending body of wall and rupture pressure disc; Another road flow through upper cap, pad, rupture pressure disc, two-way resistance parallel connection reduction block overall electrical resistance; Upper cap and bending body of wall adopt welding connecting mode, have eliminated gap internal resistance each other, have further reduced the block internal resistance; The whole internal resistance of blocking a shot is reduced to below the 0.08m Ω; The finished product battery capacity improves greatly, and the number of times that discharges and recharges capable of circulation increases, and battery performance improves;
3, the orifice plate circle of sealing ring forms hollow out formula sealing ring in the plastics intercell connector is connected positive and negative class F insulation circle, and orifice plate is embedded in the orifice plate circle and circular weld platform laser welding, during positive and negative class F insulation circle stress deformation; Rock deformation pressure does not have influence to the orifice plate circle; The orifice plate circle is indeformable, and when block encapsulated with battery steel shell, employing mould radially pressing box hat was given the generation radial pressure of blocking a shot with block; Radial pressure can't reach the orifice plate circle by positive and negative class F insulation circle; Orifice plate or rupture pressure disc do not have distortion, dislocation-free, have stopped the distortion of orifice plate or rupture pressure disc, dislocation causes the battery anti-explosion film to pop or rupture pressure disc is undesired pops, and battery safety is higher.
The present invention adopts and to answer the pressure release ring to connect the circular weld platform in advance at the rupture pressure disc bottom surface of blocking a shot, and circular weld platform and orifice plate welding answer pressure release ring, upper cap shade flange and shade raising solder joint and rupture pressure disc bending body of wall closely to weld along sharp-pointed thorn-like flange cutting in the tie spacer in advance; Realize that rupture pressure disc is by setting pressure upset pop and the block a shot reduction of whole internal resistance; Its simple in structure, compact, stable, not yielding, dislocation, the block internal resistance is low; Battery performance is high; The pressure release that can normally pop after the rupture pressure disc upset, explosion-proof performance is stable, and is safe in utilization, the life-span is long.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of sealing ring of the present invention.
Among the figure: upper cap 1, solder joint 11, flange 12, pad 2, sharp thorn-like flange 21, rupture pressure disc 3, bending body of wall 31 is answered pressure release ring 32 in advance, circular weld platform 33, orifice plate 4, sealing ring 5, orifice plate circle 51, both positive and negative polarity insulated ring 52, plastics intercell connector 53.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1, shown in 2, explosion-proof cap of micro-resistance cylindrical lithium ion battery mainly comprises upper cap 1, pad 2, rupture pressure disc 3, orifice plate 4 and sealing ring 5.Sealing ring 5 comprises orifice plate circle 51 and both positive and negative polarity insulated ring 52, and orifice plate circle 51 is connected through the plastics intercell connector 53 more than two and forms hollow out formula sealing ring in the positive and negative class F insulation circle 52; Sealing ring 5 outer belows are provided with the orifice plate 4 that is positioned on the orifice plate circle 52; Be provided with rupture pressure disc 3, pad 2 and upper cap 1 in the sealing ring 5 from the bottom to top successively; The bottom surface of rupture pressure disc 3 is provided with the circular weld platform 33 to lower convexity; Form between circular weld platform 33 and rupture pressure disc 3 bottom surfaces and answer pressure release ring 32 in advance, circular weld platform 33 and orifice plate 4 laser welding, the bending body of wall 31 of rupture pressure disc 3 is pressed together on upper cap 1 and pad 2 on the rupture pressure disc 3; Two solder joint 11 ultrasonic bonding with raising that bending body of wall 31 and upper cap 1 shade upper surface evenly are provided with, upper cap 1 shade are provided with the flange 12 corresponding with bending body of wall 31 bending parts upwards; Be equipped with in the pad 2 with rupture pressure disc 3 and answer the corresponding sharp thorn-like flange 21 in pressure release ring 32 positions in advance.
When the present invention assembles; At first with pad 2 put into rupture pressure disc 3 make pad sharp thorn-like flange 21 corresponding rupture pressure discs 3 answer pressure release ring 32 in advance; Then upper cap 1 is placed on the pad 2 in the rupture pressure disc 3; The body of wall of bending rupture pressure disc 3 makes solder joint 11 ultrasonic bonding of bending body of wall 31 and upper cap 1 again, will weld the both positive and negative polarity insulated ring 52 that the good rupture pressure disc that has upper cap 13 is put into sealing ring 5 at last; Make the orifice plate circle 51 of rupture pressure disc circular weld platform 33 corresponding sealing rings, will have the sealing ring and the battery steel shell assembling of rupture pressure disc at last.
During use, inside battery pressure-bearing, temperature raise, and answer the pressure release ring stressed all the time in advance between rupture pressure disc and the circular weld platform; Answer in advance when the pressure release ring is stressed to reach fracture pressure and rupture; The circular weld platform pops from rupture pressure disc and makes the inside battery pressure release, and this moment, the circular weld platform was difficult for stopping up the upper cap pore to the extensional of upper cap direction trace, and the sharp thorn-like flange of ring plays the cutting knife effect to answering the pressure release ring in advance in the pad; The battery anti-explosion performance is good, and is safe in utilization.
Claims (3)
1. explosion-proof cap of micro-resistance cylindrical lithium ion battery; The rupture pressure disc (3), orifice plate (4) and the sealing ring (5) that comprise upper cap (1), pad (2), band body of wall; Upper cap is provided with a plurality of pores, and the body of wall bending of rupture pressure disc is wrapped in pad and upper cap in the rupture pressure disc cavity, and the rupture pressure disc behind the above-mentioned parcel embeds and scribbles in the sealing ring of glue; The bottom surface of sealing ring is packed with orifice plate; Orifice plate and rupture pressure disc laser spot welding is characterized in that: the bottom surface of said rupture pressure disc (3) is provided with the circular weld platform (33) to lower convexity, forms between circular weld platform and the rupture pressure disc bottom surface and answers pressure release ring (32) in advance; Said upper cap (1) shade is provided with flange (12) upwards; Be equipped with in the said pad (2) with rupture pressure disc and answer the corresponding sharp thorn-like flange (21) in pressure release ring (32) position in advance.
2. explosion-proof cap of micro-resistance cylindrical lithium ion battery according to claim 1; It is characterized in that: said upper cap (1) shade upper surface evenly is provided with two solder joints with raising (11), two bending body of wall (31) ultrasonic bonding with the solder joint and the rupture pressure disc of raising.
3. explosion-proof cap of micro-resistance cylindrical lithium ion battery according to claim 1; It is characterized in that: said sealing ring (5) comprises orifice plate circle (51) and both positive and negative polarity insulated ring (52), and the orifice plate circle is connected through the plastics intercell connector (53) more than two and forms hollow out formula sealing ring in the positive and negative class F insulation circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010164333XA CN101814589B (en) | 2010-05-06 | 2010-05-06 | Explosion-proof cap of micro-resistance cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010164333XA CN101814589B (en) | 2010-05-06 | 2010-05-06 | Explosion-proof cap of micro-resistance cylindrical lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101814589A CN101814589A (en) | 2010-08-25 |
| CN101814589B true CN101814589B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010164333XA Expired - Fee Related CN101814589B (en) | 2010-05-06 | 2010-05-06 | Explosion-proof cap of micro-resistance cylindrical lithium ion battery |
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| Country | Link |
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| CN (1) | CN101814589B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088064A (en) * | 2011-01-04 | 2011-06-08 | 无锡市金杨新型电源有限公司 | Novel battery cover cap structure |
| CN102290542B (en) * | 2011-07-13 | 2015-09-02 | 无锡市金杨新型电源有限公司 | Cap for low-resistance lithium ion battery |
| CN103236509B (en) * | 2013-04-24 | 2015-07-15 | 深圳市沃特玛电池有限公司 | Battery safety cap device and lithium battery with same |
| CN103236505A (en) * | 2013-04-28 | 2013-08-07 | 泰兴市振兴电子有限公司 | Power type lithium ion battery nut cap and welding process thereof |
| CN103296227A (en) * | 2013-05-20 | 2013-09-11 | 泰兴市振兴电子有限公司 | Power type lithium ion battery cover and welding process thereof |
| CN106299171A (en) * | 2016-09-05 | 2017-01-04 | 东莞市奕东电子有限公司 | A kind of power type lithium electricity capping structure |
| CN107785507A (en) * | 2017-10-27 | 2018-03-09 | 新乡市旭兴电源科技有限公司 | Cylindrical lithium ion battery combination cover cap and its manufacture craft |
| CN107706320A (en) * | 2017-11-13 | 2018-02-16 | 泰兴市振兴电子有限公司 | One kind is without pad lithium battery cap |
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|---|---|---|---|---|
| CN101030631A (en) * | 2007-04-06 | 2007-09-05 | 天津力神电池股份有限公司 | Cylindrical lithium-ion battery cap against improper-open and leakage |
| CN201259898Y (en) * | 2008-07-29 | 2009-06-17 | 天津佰特瑞电子有限公司 | Lithium ionic cell cap combining apparatus |
| CN101626066A (en) * | 2009-08-14 | 2010-01-13 | 深圳市科达利实业有限公司 | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof |
| CN201699073U (en) * | 2010-05-06 | 2011-01-05 | 熊辉 | Anti-explosion nut cap of micro-resistance cylindrical lithium ion battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6737187B2 (en) * | 1997-04-21 | 2004-05-18 | Toyo Kohan Co., Ltd. | Closed battery |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030631A (en) * | 2007-04-06 | 2007-09-05 | 天津力神电池股份有限公司 | Cylindrical lithium-ion battery cap against improper-open and leakage |
| CN201259898Y (en) * | 2008-07-29 | 2009-06-17 | 天津佰特瑞电子有限公司 | Lithium ionic cell cap combining apparatus |
| CN101626066A (en) * | 2009-08-14 | 2010-01-13 | 深圳市科达利实业有限公司 | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof |
| CN201699073U (en) * | 2010-05-06 | 2011-01-05 | 熊辉 | Anti-explosion nut cap of micro-resistance cylindrical lithium ion battery |
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| CN101814589A (en) | 2010-08-25 |
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Effective date of registration: 20160408 Address after: 225400, No. 33-8, Party School Road, Taixing, Jiangsu, Taizhou Patentee after: Taixing Zhengxing Electron Co., Ltd. Address before: 225400 No. 33-8, Party School Road, Taixing, Jiangsu Patentee before: Xiong Hui |
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