CN203674272U - Cover explosion preventing button cell - Google Patents
Cover explosion preventing button cell Download PDFInfo
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- CN203674272U CN203674272U CN201320849377.5U CN201320849377U CN203674272U CN 203674272 U CN203674272 U CN 203674272U CN 201320849377 U CN201320849377 U CN 201320849377U CN 203674272 U CN203674272 U CN 203674272U
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- China
- Prior art keywords
- cover
- negative
- anode
- button cell
- shoulder position
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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 utility model discloses a cover explosion preventing button cell. The cover explosion preventing button cell comprises an anode shell, a cathode cover, a sealing ring, a diaphragm, a cathode material, and an anode material, wherein a plating layer is arranged on the inner surface of the cathode cover; the upper edge of the anode shell and the opposite edge of the outer edge of the cathode cover are sealed and buckled; the sealing ring is arranged between the anode shell and the cathode cover for separating the anode shell from the cathode cover; the cathode material is arranged at the inner bottom of the anode shell; the anode material is arranged in the cathode cover; the diaphragm is arranged between the cathode material and the anode material for separating the cathode material from the anode material; a shoulder position is arranged on the cathode cover near to the outer edge; the upper edge of the anode shell is wrapped and buckled on the shoulder position; the opening diameter of the upper edge of the anode shell is smaller than the diameter of the opposite edge of the outer edge of the cathode cover by the ratio of 13-33%. The cover explosion preventing button cell can bear higher air pressure; when the air bulking is severe, an air exhaust gap is formed in the sealing place of the anode shell for exhausting air without exploding and flying off the cathode cover; the liquid drainage preventing effect of the cover explosion preventing button cell is also better compared with the conventional button cells.
Description
Technical field
The utility model belongs to the technical field of button cell, is 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 the primary raw material using zinc as negative pole, and when 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 material 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, even explodes but can there is serious inflatable after heavy load continuous discharge, particularly often can occur without the button cell of mercury.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 isolates 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, and described barrier film 4 is arranged between positive electrode 5 and negative material 6 and by positive electrode 5 and negative material 6 isolates separately.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 that is only less than 7%-10% than anti-limit, negative cover outer diameter.So when button cell is in the time that heavy load overdischarge or short circuit produce inflatable, the anode cover of prior art is incessantly negative cover of bag 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, in the time that 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 produce because of heavy load overdischarge or short circuit etc.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.In the time that battery produces inflatable because of heavy burden overdischarge or short circuit, such enclosuring structure is just easy to can't hold out against air pressure and explodes, 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, the gas of having avoided the Metal Contact of negative pole zinc raw material and negative cover to produce, 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 the setting of but can't see negative pole and being stamped the capillary channel of steam vent or exhaust with the product of this patented technology production.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 four of an antipole anti-safety tests of filling short circuit of battery therein, will soon there is inflatable blast; In addition, in negative cover, increase 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.
Utility model content
The purpose of this utility model is to avoid deficiency of the prior art and a kind of Explosion-proof cap button cell is provided, and produces the problem that inflatable causes blast can effectively improve because of short circuit time or when heavy load continuous discharge.
The purpose of this utility model 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, be provided with shoulder position near outer place, shoulder position must reduction be formed with an obvious level, this level can be flat some gradients that also can have, the upper of described anode cover is buckled on described shoulder position along sealing bag, on anode cover, be less than the ratio of anti-limit, negative cover outer diameter 13% to 33% along opening diameter.
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, detain to described shoulder position near neck place, apart from the about 0.2-0.8mm of neck along bag.
Wherein, described shoulder position is 0.6-1.2mm lower than the height of negative cover end face, difference in height between shoulder position and the negative cover end face of described negative cover, 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.
The Explosion-proof cap button cell that the utility model provides, 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 outer place, the Shang Yanbao of described anode cover is buckled on described shoulder position, on anode cover, be less than the ratio of anti-limit, negative cover outer diameter 13% to 33% along opening diameter.Because having level described in being buckled in, significantly takes on position the Shang Yanbao of anode cover, 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, rise when very serious at gas, 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.
Brief description of the drawings
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 utility model embodiment.
Fig. 3 is the cutaway view of the negative cover of the Explosion-proof cap button cell that provides of the utility model embodiment.
Embodiment
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
Core of the present utility model 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 when heavy load continuous discharge.
As shown in Figures 2 and 3, Explosion-proof cap button cell described in the utility model, 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 isolates 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, and described barrier film 4 is arranged between positive electrode 5 and negative material 6 and by positive electrode 5 and negative material 6 isolates separately.Described negative cover 2 is provided with the obvious shoulder position 7 of level near outer place, 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 the composite steel band electroplating the raw material of various alloys or form through lamination with various metals, becomes as the planform of Fig. 3 through mechanical punching.The Shang Yanbao of described anode cover 1 is buckled on described shoulder position 7, and bag button degree makes to be less than along opening diameter 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 to be less than anti-limit, negative cover outer diameter 13% to 33% ratio along opening diameter 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, make the sealing ring of having increased with conventional raw material, 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 is 0.6-1.2mm lower than the height of negative cover 2 end faces.Described shoulder position 7 can be parallel with the end face of negative cover 2, certainly, described shoulder position 7 also can near neck to close outer place, downward-sloping gradually.
As preferred embodiment, described shoulder position 7 is less than its ratio near the diameter 15% to 35% at outer place near the diameter at neck place, on described anode cover 1, be also less than the ratio of anti-limit, the outer place diameter 13% to 33% of negative cover along the diameter of opening, effective preferred version easy to implement is again 15% to 25% ratio that on anode cover, the diameter along opening is less than anti-limit, negative cover outer diameter.
As preferred embodiment, described sealing ring 3 extends to the neck of shoulder position 7 from the bottom, outer of negative cover 2.Increased due to sealing ring and anode cover, after sealing, more can tightly seal compared with prior art 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 utility model 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, can effectively improve because of short circuit time or when 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 utility model are connected with the LR44 type No. 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 do not explode.Measurement the utlity model has the LR44 battery of Explosion-proof cap, on anode cover 1, be that φ 8.60 is to 8.70mm along faucal diameter, 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 utility model, still, the utility model can also adopt other to be different from alternate manner described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection range.
In a word; although the utility model has exemplified above-mentioned preferred implementation; but 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 utility model, otherwise all should be included in protection range of the present utility model.
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 outer place, 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 |
|---|---|---|---|
| CN201320849377.5U CN203674272U (en) | 2013-12-19 | 2013-12-19 | Cover explosion preventing button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849377.5U CN203674272U (en) | 2013-12-19 | 2013-12-19 | Cover explosion preventing button cell |
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| Publication Number | Publication Date |
|---|---|
| CN203674272U true CN203674272U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320849377.5U Expired - Fee Related CN203674272U (en) | 2013-12-19 | 2013-12-19 | Cover explosion preventing button cell |
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| CN (1) | CN203674272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700787A (en) * | 2013-12-19 | 2014-04-02 | 陈光毅 | Cover explosion prevention button battery |
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2013
- 2013-12-19 CN CN201320849377.5U patent/CN203674272U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700787A (en) * | 2013-12-19 | 2014-04-02 | 陈光毅 | Cover explosion prevention button battery |
| CN103700787B (en) * | 2013-12-19 | 2016-10-05 | 陈光毅 | Cover explosion prevention button battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20171219 |