CN103700787A - Cover explosion prevention button battery - Google Patents
Cover explosion prevention button battery Download PDFInfo
- Publication number
- CN103700787A CN103700787A CN201310711992.4A CN201310711992A CN103700787A CN 103700787 A CN103700787 A CN 103700787A CN 201310711992 A CN201310711992 A CN 201310711992A CN 103700787 A CN103700787 A CN 103700787A
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- China
- Prior art keywords
- cover
- negative
- negative cover
- shoulder position
- button cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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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
Abstract
The invention discloses a cover explosion prevention button battery which comprises a positive shell, a negative cover, a sealing ring, a separator, a positive material and a negative material, and a clad layer is arranged on the internal surface of the negative cover, the upper edge of the positive shell is buckled with an inverse side seal in the outer edge of the negative cover, the sealing ring is arranged between the positive shell and the negative cover, and the positive shell and the negative cover are separated by virtue of the sealing ring, the positive material is arranged at the bottom in the positive shell, the negative material is arranged in the negative cover, the separator is arranged between the positive material and the negative material, and the positive material and the negative material are separated by virtue of the separator, a shoulder position is arranged on a position, close to the outer edge, on the negative cover, the upper edge of the positive shell is buckled on the shoulder position in a covering manner, and the opening diameter of the upper edge of the positive shell is smaller than 13-33% of the inverse side diameter of the outer edge of the negative cover. The cover explosion prevention button battery provided by the invention can bear large air pressure, in case of severe air bulking, an exhaust slot is split in the seal of the positive shell, gas can be discharged, and thus the negative cover can be prevented from exploding and flying off, and the anti-leakage effect of the battery disclosed by the invention is better than that of a conventional button battery.
Description
Technical field
The invention belongs to the technical field of button cell, be specifically related to a kind of button cell of Explosion-proof cap.
Background technology
General button cell, particularly Alkaline Zinc/manganese and zinc/silver-colored button cell is to using the primary raw material of zinc as negative pole, and during the Metal Contact of the zinc of negative pole raw material and other raw material and negative cover, under the effect of alkaline electrolyte, can produce a large amount of hydrogen thereby the even blast of expanding, must be by adding the raw materials such as mercury or indium or preventing that at materials such as negative cover plating inner surface indium or tin hydrogen from producing.But also there is inflatable this serious shortcoming of even exploding in above-mentioned mercuric or not mercuric button cell in serviceability.During normal use, general light load electric discharge does not have obvious inflatable to conventional button cell, but can there is serious inflatable after heavy load continuous discharge, even explodes, and particularly the button cell without mercury often can occur.In addition, factory's assembling button cell enters product, or in the process of replacement of products button cell, also likely there will be many cell stacks short circuits, can produce high temperature causes serious inflatable even to be exploded, the whole negative cover of explosion time can be gone out by fly bomb together with the mordant chemical raw material in battery in blast,, there is serious potential safety hazard in eyes and other part of health that can injure people.
Existing button cell structure as shown in Figure 1, comprises anode cover 1, negative cover 2, sealing ring 3, barrier film 4, positive electrode 5, negative material 6.The upper edge of anode cover 1 is sealed the fillet position, outer of negative cover 2, sealing ring 3 is arranged between anode cover 1, negative cover 2 and by anode cover 1, negative cover 2 isolation and separates, described positive electrode 5 is arranged on the inner bottom part of anode cover 1, described negative material 6 is arranged in negative cover 2, and described barrier film 4 is arranged between positive electrode 5 and negative material 6 and by positive electrode 5 and negative material 6 isolation and separates.Because the upper edge of anode cover 1 is just sealed the fillet position, outer of negative cover 2, also very large along faucal diameter on the anode cover after battery seal, the conventional ratio of 7%-10% that is only less than than anti-limit, negative cover outer diameter.So when button cell is when heavy load overdischarge or short circuit produce inflatable, the anode cover of prior art is bag negative cover incessantly just, can fly off because atmospheric pressure increases explode.
For preventing that battery from exploding because of inflatable, zinc/manganese alkaline battery of column type is as LR06, LR03 etc., be provided with air chamber and a steam vent that is used for stored-gas, when inflatable is serious, sealing ring has a position to have very thin film to break, allow gas discharge from the steam vent of negative cover, solve the inflatable and the blast problem that because of heavy load overdischarge or short circuit etc., produce.And button cell manufacturer generally believes, the tiny column type batteries different from structure of button cell volume, can not arrange air chamber and steam vent.In addition, because battery is tiny, blast dynamics does not have column type battery large yet, so do not go to think that other technical scheme goes to address the above problem.And, in order to improve the capacitance of tiny button cell, conventionally the end face diameter of negative cover is accomplished to maximum as far as possible, shoulder height is also accomplished the highest as far as possible, some does not even establish shoulder position, go the capacity that increases negative cover can put some more negative pole raw materials, anode cover and sealing ring also can only be encapsulated into negative cover shoulder position, circle of position angle, can only meet the requirement of basic liquid-leakage preventing.When battery produces inflatable because of heavy burden overdischarge or short circuit, such enclosuring structure explodes with regard to being easy to can't hold out against air pressure, and the LR44 battery that particularly volume and capacitance are larger is more easily blasted.
Chinese patent notification number CN102412373B discloses a kind of without the unleaded button cell of mercury, it has added an isolated location at negative cover inner surface, avoided the gas of the Metal Contact generation of negative pole zinc raw material and negative cover, in sealing ring, pass through to increase a conductor wire, negative pole zinc raw material is connected to admittance electricity with the outer ring body of negative cover, thereby prevents button cell normal inflatable or blast occurring after heavy load continuous discharge.Although this patent provides the capillary channel that is provided with steam vent or exhaust in negative cover in claim and specification.But, on market, find but to can't see with the product that this patented technology is produced the setting that negative pole is stamped the capillary channel of steam vent or exhaust.Because if this patent negative cover is provided with steam vent or capillary channel may cause obvious leakage and cannot implement, so the technical scheme of this patent and fail really to prevent because of many of button cells are stacking or with other Metal Contact short circuit, produce high temperature and the inflatable and the blast that cause.Particularly, in the anti-safety test of filling short circuit of four of an antipole batteries therein, will soon there is inflatable blast; In addition, in negative cover, increased an isolated location, also cause placing in negative cover the capacity of raw material and the capacity of battery reduce approximately 20% or more than, this is also a shortcoming, one of them larger shortcoming is to have a conductor wire in sealing ring, to connect negative pole zinc raw material and negative cover easily causes serious leakage hidden danger, and fails really to solve the potential safety hazard of button cell.
Because existing technology exists the above-mentioned critical defect that self is difficult to overcome, be badly in need of wanting a kind of new technical scheme to solve alkaline button cell, the quick-fried lid safety problem of the LR44 button cell that particularly mercuryless volume is larger.
Summary of the invention
The object of the invention is to avoid deficiency of the prior art and a kind of Explosion-proof cap button cell is provided, in the time of effectively improving because of short circuit or during heavy load continuous discharge, produce the problem that inflatable causes blast.
Object of the present invention is achieved through the following technical solutions:
A kind of Explosion-proof cap button cell is provided, comprise anode cover, negative cover, sealing ring, barrier film, positive electrode, negative material, the outer of negative cover is provided with anti-limit, the upper edge of described anode cover fastens with the anti-edge sealing in the outer of negative cover, described sealing ring is arranged on anode cover, between negative cover and by anode cover, negative cover isolation separately, described positive electrode is arranged on the inner bottom part of anode cover, described negative material is arranged in negative cover, described barrier film is arranged between positive electrode and negative material and by positive electrode and negative material isolation and separates, described negative cover end face reduced, near place, outer, be provided with shoulder position, shoulder position must reduction be formed with an obvious level, this level can be flat also can have some gradients, the upper of described anode cover is buckled on described shoulder position along sealing bag, on anode cover, along opening diameter, be less than the ratio of anti-limit, negative cover outer diameter 13% to 33%.
Wherein, described shoulder position is less than 15% to 35% of anti-limit, negative cover outer diameter near the diameter at neck place.
Wherein, on described anode cover, along bag, detain to described shoulder position near neck place, apart from the about 0.2-0.8mm of neck.
Wherein, described shoulder position is 0.6-1.2mm lower than the height of negative cover end face, the shoulder position of described negative cover and the difference in height between negative cover end face, what make anode cover was above buckled in described shoulder position when upper along faucal bag, the end face of negative cover higher than anode cover upper along faucal at least more than 0.2mm.
Wherein, described sealing ring extends to the neck of shoulder position from the bottom, outer of negative cover.
Explosion-proof cap button cell provided by the invention, comprise anode cover, negative cover, sealing ring, barrier film, positive electrode, negative material, the upper edge of described anode cover fastens with the sealing of the outer of negative cover, described sealing ring is arranged on anode cover, between negative cover and by anode cover, negative cover isolation separately, described positive electrode is arranged on the inner bottom part of anode cover, described negative material is arranged in negative cover, described barrier film is arranged between positive electrode and negative material and by positive electrode and negative material isolation and separates, described negative cover is provided with shoulder position near place, outer, the Shang Yanbao of described anode cover is buckled on described shoulder position, on anode cover, along opening diameter, be less than the ratio of anti-limit, negative cover outer diameter 13% to 33%.Because the Shang Yanbao of anode cover has level described in being buckled in, significantly take on position, anode cover that use has been increased and the sealing ring of having increased, after sealing, can tightly seal the whole shoulder position that fastens negative cover, and can meet the ratio that is less than anti-limit, negative cover outer diameter 13%-33% on anode cover along opening diameter, can bear very large air pressure, at gas, rise when very serious, anode cover sealing part exhaust seam that also can split, allow gas excretion and can not make negative cover pop to fly off, the effect of liquid-leakage preventing is also good than conventional button cell.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the button cell in correlation technique.
Fig. 2 is the cutaway view of the Explosion-proof cap button cell that provides of the embodiment of the present invention.
Fig. 3 is the cutaway view of the negative cover of the Explosion-proof cap button cell that provides of the embodiment of the present invention.
Embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
Core of the present invention is to provide a kind of Explosion-proof cap button cell, produces the problem that inflatable causes blast when it can improve because of short circuit effectively or during heavy load continuous discharge.
As shown in Figures 2 and 3, Explosion-proof cap button cell of the present invention, comprises anode cover 1, negative cover 2, sealing ring 3, barrier film 4, positive electrode 5, negative material 6.The outer of negative cover 2 is provided with anti-limit, and the upper edge of described anode cover 1 fastens with the anti-edge sealing in the outer of negative cover 2.Described sealing ring 3 is arranged between anode cover 1, negative cover 2 and by anode cover 1, negative cover 2 isolation and separates, described positive electrode 5 is arranged on the inner bottom part of anode cover 1, described negative material 6 is arranged in negative cover 2, and described barrier film 4 is arranged between positive electrode 5 and negative material 6 and by positive electrode 5 and negative material 6 isolation and separates.Described negative cover 2 is provided with the obvious shoulder position 7 of level near place, outer, and the formation of shoulder position 7, specifically can run business into particular one the end face diameter of negative cover, and the shoulder of negative cover reduces, and forming one has level significantly to take on position.Between shoulder position 7 and end face, form an oblique neck.Negative cover can be with conventional raw material, comprises iron plate nickel plating, copper facing or is plated indium or tin or electroplate the raw material of various alloys or the composite steel band forming through lamination with various metals, through mechanical punching, becomes as the planform of Fig. 3.The Shang Yanbao of described anode cover 1 is buckled on described shoulder position 7, and bag button degree makes along opening diameter, to be less than on anode cover 1 ratio of negative cover 2 anti-limit, outer diameters 13% to 33%.In order to reach explosion-proof effect, the upper of anode cover 1 is buckled on whole shoulder position 7 along wrapping, anode cover 1, sealing ring 3 all need to increase, the size of increasing is can meet after battery seal along opening diameter, to be less than anti-limit, negative cover outer diameter 13% to 33% ratio on anode cover, these are main accessories of button cell enclosuring structure, and the change of structure and size is specifically customization according to different battery size sizes.Because the Shang Yanbao of anode cover 1 and sealing ring 3 is buckled on described shoulder position 7, the anode cover 1 increased and the sealing ring of having increased can tightly be sealed the whole shoulder position that fastens negative cover 2, can bear very large air pressure and can not make negative cover 2 pop and fly off, the effect of liquid-leakage preventing is also good than conventional button cell.The iron plate of available routine adds electronickelling and makes the anode cover of having increased, with conventional raw material, make the sealing ring of having increased, positive electrode mainly adds silver oxide etc. with conventional manganese dioxide or silver oxide or manganese dioxide and adds graphite again and make, negative zinc cream, the diaphragm material conventional with use, after assembly, seal, make LR44 or the SR44 button cell with blast resistance construction.
As preferred embodiment, the difference in height between the shoulder position 7 of described negative cover 2 and negative cover 2 end faces, while making the Shang Yanbao of anode cover 1 be buckled on described shoulder position 7, more than the upper edge minimum 0.1mm of the end face of negative cover 2 higher than anode cover 1.Concrete, described shoulder position 7 height lower than negative cover 2 end faces are 0.6-1.2mm.Described shoulder position 7 can be parallel with the end face of negative cover 2, certain, and described shoulder position 7 also can extremely be located near outer from close neck, downward-sloping gradually.
As preferred embodiment, described shoulder position 7 diameters near neck place are less than it near the ratio of the diameter 15% to 35% at place, outer, on described anode cover 1, along the diameter of opening, be also less than the ratio of place, anti-limit, the outer diameter 13% to 33% of negative cover, effective preferred version easy to implement is again 15% to 25% ratio of anti-limit, negative cover outer diameter that is less than along the diameter of opening on anode cover.
As preferred embodiment, described sealing ring 3 extends to the neck of shoulder position 7 from the bottom, outer of negative cover 2.Due to sealing ring and anode cover, increased, after sealing, compared with prior art, more can tightly seal the whole shoulder position that fastens negative cover, sealing surface is larger, and the effect of liquid-leakage preventing is also good than conventional button cell.
The present invention is because the upper of anode cover is less than anti-limit, negative cover outer diameter 13%-33% along opening diameter, bag is buckled on the shoulder position of described negative cover, anode cover can tightly be sealed the whole shoulder position that fastens negative cover, can bear very large air pressure and can not make negative cover pop to fly off, in the time of effectively improving because of short circuit or during heavy load continuous discharge, producing the problem that inflatable causes blast.In addition, capacitance, than reduce by 5% to 10% the ratio of only having an appointment without the same model battery of blast resistance construction, also has simultaneously and has strengthened the effect that prevents leakage.Four LR44 size battery of the present invention are connected with the LR44 size battery of conventional structure in 15 days contrast tests of short circuit, 20 groups of conventional structure have 18 groups (group numbers of 90%) respectively to have a battery explosion, and have 20 groups of short circuits 15 days of blast resistance construction, all less than blast.Measure the LR44 battery that the present invention has Explosion-proof cap, on anode cover 1, along faucal diameter, be that φ 8.60 is to 8.70mm, dissect this battery take out negative cover measure anti-limit, outer diameter be φ 10.20 to 10.25mm, the size that is less than anti-limit, negative cover outer diameter along faucal on anode cover is approximately 15.3%.
In description above, set forth a lot of details so that fully understand the present invention, still, the present invention can also adopt other to be different from alternate manner described here and implement, and therefore, can not be interpreted as limiting the scope of the invention.
In a word; although the present invention has exemplified above-mentioned preferred implementation, should illustrate, although those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (6)
1. an Explosion-proof cap button cell, comprise anode cover (1), negative cover (2), sealing ring (3), barrier film (4), positive electrode (5), negative material (6), the outer of negative cover (2) is provided with anti-limit, the upper edge of described anode cover (1) fastens with the anti-edge sealing in outer of negative cover (2), described sealing ring (3) is arranged on anode cover (1), between negative cover (2) and by anode cover (1), negative cover (2) isolation separately, described positive electrode (5) is arranged on the inner bottom part of anode cover (1), described negative material (6) is arranged in negative cover (2), described barrier film (4) is arranged between positive electrode (5) and negative material (6) and by positive electrode (5) and negative material (6) isolation and separates, it is characterized in that: described negative cover (2) is provided with shoulder position (7) near place, outer, the Shang Yanbao of described anode cover (1) is buckled on described shoulder position (7), the upper ratio that is less than anti-limit, negative cover (2) outer diameter 13% to 33% along opening diameter of anode cover (1).
2. Explosion-proof cap button cell according to claim 1, is characterized in that the upper ratio that is less than the 15%-25% of anti-limit, negative cover outer diameter along the diameter of opening of described anode cover (1).
3. Explosion-proof cap button cell according to claim 1, it is characterized in that: described shoulder position (7) is 0.6-1.2mm lower than the height of negative cover (2) end face, described shoulder position (7) is less than 15% to 35% ratio of anti-limit, negative cover (2) outer diameter near the diameter at neck place.
4. Explosion-proof cap button cell according to claim 3, is characterized in that: described anode cover (1) is upper to be detained to described shoulder position (7) near neck place along bag.
5. Explosion-proof cap button cell according to claim 4, is characterized in that: the upper edge of described anode cover (1) is 0.2-0.8mm from neck distance.
6. according to the Explosion-proof cap button cell described in any one in claim 1 to 5, it is characterized in that: described sealing ring (3) extends to the neck of shoulder position (7) from the bottom, outer of negative cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711992.4A CN103700787B (en) | 2013-12-19 | 2013-12-19 | Cover explosion prevention button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711992.4A CN103700787B (en) | 2013-12-19 | 2013-12-19 | Cover explosion prevention button battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103700787A true CN103700787A (en) | 2014-04-02 |
| CN103700787B CN103700787B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310711992.4A Active CN103700787B (en) | 2013-12-19 | 2013-12-19 | Cover explosion prevention button battery |
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| Country | Link |
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| CN (1) | CN103700787B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611313A (en) * | 2017-10-07 | 2018-01-19 | 珠海市至力电池有限公司 | Button cell Explosion-proof cap |
| CN111952514A (en) * | 2020-08-24 | 2020-11-17 | 深圳市易德能科技有限公司 | Battery with a battery cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042749A (en) * | 2000-07-31 | 2002-02-08 | Toshiba Battery Co Ltd | Flat type nonaqueous electrolyte secondary battery |
| JP2003045480A (en) * | 2001-08-01 | 2003-02-14 | Toshiba Corp | ThIN NICKEL - HYDROGEN SECONDARY BATTERY, HYBRID CAR AND ELECTRIC VEHICLE |
| CN101174676A (en) * | 2007-10-10 | 2008-05-07 | 新利达电池实业（德庆）有限公司 | Alkaline non-mercury button battery capable of effectively preventing flatulence and liquid leakage and method of manufacturing the same |
| CN203674272U (en) * | 2013-12-19 | 2014-06-25 | 陈光毅 | Cover explosion preventing button cell |
-
2013
- 2013-12-19 CN CN201310711992.4A patent/CN103700787B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042749A (en) * | 2000-07-31 | 2002-02-08 | Toshiba Battery Co Ltd | Flat type nonaqueous electrolyte secondary battery |
| JP2003045480A (en) * | 2001-08-01 | 2003-02-14 | Toshiba Corp | ThIN NICKEL - HYDROGEN SECONDARY BATTERY, HYBRID CAR AND ELECTRIC VEHICLE |
| CN101174676A (en) * | 2007-10-10 | 2008-05-07 | 新利达电池实业（德庆）有限公司 | Alkaline non-mercury button battery capable of effectively preventing flatulence and liquid leakage and method of manufacturing the same |
| CN203674272U (en) * | 2013-12-19 | 2014-06-25 | 陈光毅 | Cover explosion preventing button cell |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611313A (en) * | 2017-10-07 | 2018-01-19 | 珠海市至力电池有限公司 | Button cell Explosion-proof cap |
| CN111952514A (en) * | 2020-08-24 | 2020-11-17 | 深圳市易德能科技有限公司 | Battery with a battery cell |
| CN111952514B (en) * | 2020-08-24 | 2022-04-26 | 深圳市易德能科技有限公司 | Battery with a battery cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103700787B (en) | 2016-10-05 |
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Effective date of registration: 20190604 Address after: 526600 No. 108 Chaoyang West Road, Deqing County, Zhaoqing City, Guangdong Province Co-patentee after: Zhaoqing Xinlida Battery Industrial Co., Ltd. Patentee after: Xinlida Battery Industry(Deqing) Co., Ltd. Address before: 526600 No. 108 Chaoyang West Road, Deqing County, Zhaoqing City, Guangdong Province Patentee before: Chen Guangyi |
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