CN1744347A - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN1744347A CN1744347A CNA2005100902177A CN200510090217A CN1744347A CN 1744347 A CN1744347 A CN 1744347A CN A2005100902177 A CNA2005100902177 A CN A2005100902177A CN 200510090217 A CN200510090217 A CN 200510090217A CN 1744347 A CN1744347 A CN 1744347A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- electrode casing
- outer peripheral
- anode cover
- bend
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 33
- 238000007789 sealing Methods 0.000 description 11
- 239000004033 plastic Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Abstract
To obtain a coin-shaped cell, in which liquid leakage from a sealed part can be prevented surely, while reduction of cell capacity is suppressed. A cell can for housing a power generation element includes a cathode can of which an outer peripheral cylindrical wall is bent upward from the outer peripheral brim of a bottom face wall, and an anode can of which an outer peripheral side wall is bent downward from the outer peripheral brim of an upper face wall. An upper end peripheral brim part of the peripheral cylindrical wall of the cathode can is calking worked inward via a gasket mounted on the outer peripheral side wall of the anode can. The outer peripheral side wall of the anode can includes an enlarged diameter part thrusting in a step form an an angle downward from the outer peripheral brim of the upper face wall, and a straight part linearly extending downward continually to the enlarged diameter part, so that the center of the curvature of a curving part of the outer peripheral cylindrical wall that is bent inward by the calking work of the outer peripheral cylindrical wall of the anode can is made to be positioned at further outside than the outer peripheral side wall of the anode can.
Description
Technical field
The present invention relates to a kind of button cell, its comprise from circular base face the wall and meditate anode cover that the neighboring is bent upwards the periphery barrel and from the neighboring of the upper wall of circle with the reclinate negative electrode casing of outer peripheral sidewall, the upper end peripheral edge portion of the periphery barrel of anode cover is processed by calking by the seal washer on the outer peripheral sidewall that is installed in negative electrode casing, thereby aduncate bend is formed on the upper end of the periphery barrel of anode cover.
Background technology
As this button cell, shown in patent documentation 1～6.Wherein, by means of seal washer with shallow discoid negative electrode casing with have more chimeric than the shallow discoid anode cover of outside dimension of the big circle of negative electrode casing, and the upper end peripheral edge portion of the periphery barrel of the anode cover calking that curves inwardly fixed, with the generating element that will constitute by positive and negative pole material and spacer etc. with sealing state be accommodated in the inside of battery case.
[patent documentation 1] spy opens 2002-373628 communique (Fig. 1)
[patent documentation 2] spy opens 2003-68254 communique (Fig. 1)
[patent documentation 3] spy opens 2000-48780 communique (Fig. 1)
[patent documentation 4] spy opens 2000-340189 communique (Fig. 1)
[patent documentation 5] spy opens flat 7-57706 communique, and (paragraph numbers 0010, Fig. 1)
[patent documentation 6] spy opens flat 9-283102 communique (Fig. 1)
For above-mentioned button cell, from the viewpoint that the prevents leakage sealing between anode cover and the negative electrode casing importantly. At this moment, by regulating the compression ratio of the seal washer shown in patent documentation 56, can improve above-mentioned sealing.
But problem is that the outer peripheral sidewall of negative electrode casing is pressed towards the battery inboard with calking power and outer peripheral sidewall is out of shape to battery is inboard, has reduced sealing, thereby the possibility from the mouth-sealed portion leakage is arranged. And, because the battery internal volume has reduced the outer peripheral sidewall crushed element of negative electrode casing, thereby reduced battery capacity.
Summary of the invention
The object of the present invention is to provide a kind of outer peripheral sidewall of negative electrode casing to be difficult to be pressed towards the battery inboard, both can prevent the reduction of battery internal volume, the button cell that can prevent from the mouth-sealed portion leakage is arranged by calking processing.
Button cell as object of the present invention, as shown in Figure 1, the battery case 1 of taking in generating element 2 comprise anode cover 5 that periphery barrel 12 is bent upwards from the neighboring of underside wall 11 and with outer peripheral sidewall 15 from the neighboring of upper wall 13 reclinate negative electrode casing 6, the upper end peripheral edge portion of the periphery barrel 12 of anode cover 5 is processed by calking by the seal washer on the outer peripheral sidewall 15 that is installed on negative electrode casing 63, thereby forms aduncate bend 12a in the upper end of the periphery barrel 12 of anode cover 5.
Of the present invention being characterized as: the outer peripheral sidewall 15 of negative electrode casing 6 comprise from the neighboring of upper wall 13 to oblique below be the step-like wide diameter portion that stretches out 16 and with wide diameter portion 16 continuously and the straight portions 17 of linearly extension downwards, the center of curvature of the bend 12a of the upper end of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close outsides of negative electrode casing 6.At this moment, comprise towards the occasion of the straight portion 17 of the foreign side of negative electrode casing 6 and the negative electrode casing 6 of upwards turning back and do not establish the occasion that this is turned back.In addition, when negative electrode casing 6 uses composite materials, strengthened the thickness of negative electrode casing 6, but even so, the center of curvature O of bend 12a is also than the outer peripheral sidewall 15 more close outsides of negative electrode casing 6.
The straight portion 17 of negative electrode casing 6 is by constituting to negative electrode casing 6 foreign sides and the urceolus portion 31 of upwards turning back with the continuous inner cylinder portion 30 of wide diameter portion 16 and with the lower end of this inner cylinder portion 30, and the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the wide diameter portion 16 of negative electrode casing 6 or the urceolus portion 31 more close outsides of straight portion 17.
In order to prevent that the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 cans be compared to the straight portion 17 more close upsides of negative electrode casing 6 most along with the distortion of the straight portion 17 of the negative electrode casing 6 of calking processing.
In other words, being must be bigger than the size L2 to straight portion 17 upper ends of negative electrode casing 6 below the underside wall 11 of anode cover 5 with setting to the L1 of size up and down of the bend 12a lower end of periphery barrel 12 below the underside wall 11 of anode cover 5.
Again in other words, be to be set in the scopes of spending with respect to underside wall 11 inclinations 80～110 of anode cover 5 by seal washer 3 the most compressed direction A between the bend 12a of the periphery barrel 12 of anode cover 5 and the negative electrode casing 6 with add man-hour at calking.
Concrete is that the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover 5 is 0.3～0.6mm.Though the radius of curvature of bend 12a is the smaller the better, but why the radius of curvature of bend 12a is made 0.3mm or above be because the thickness of anode cover 5 is generally 0.3mm, if the radius of curvature of bend 12a then has the danger that cracks less than the gauge of anode cover 5 on bend 12a.
Why the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover is made 0.8mm or following be because the gauge up and down of battery case 1 is generally about 1.6～5mm, if the radius of curvature of bend 12a is excessive, the straight portion 17 of the excessive ground of bend 12a anticathode shell 6 then, the 17 easy plastic deformations of straight portion, except the being adjacent to property of reduction and seal washer 3, along with above-mentioned distortion battery capacity also diminishes.The radius of curvature of bend 12a is 0.8mm or following getting final product, preferably 0.6mm or following.
In order to improve sealing, the inside front end of the bend 12a of the periphery barrel 12 of anode cover 5 cans be compared to the more close battery center side of inner peripheral surface of the straight portion 17 of negative electrode casing 6 most.
According to the present invention, because the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close outsides of negative electrode casing 6, so the outer peripheral sidewall 15 that the upper end of the periphery barrel 12 of anode cover 5 is pushed negative electrode casing 6 downwards with seal washer 3 in calking processing.Therefore, the straight portion 17 of negative electrode casing 6 is difficult to be pressed towards the center side of battery, thereby can suppress the plastic deformation of straight portion 17 to the battery center side, prevents to reduce the internal volume of battery, thereby can prevent the reduction of battery capacity.
And, as mentioned above because the upper end of the periphery barrel 12 of anode cover 5 is pushed the outer peripheral sidewall 15 and the seal washer 3 of negative electrode casing 6 downwards, so can positively keep between wide diameter portion 16 top of outer peripheral sidewall 15 of the upper end peripheral edge portion of periphery barrel 12 of anode cover 5 and negative electrode casing 6 and the underside wall 11 of the lower end of the outer peripheral sidewall 15 of negative electrode casing 6 and anode cover 5 top between sealing, thereby can positively prevent leakage.
The present invention no matter with the lower end of the straight portion 17 of negative electrode casing 6 to negative electrode casing 6 foreign sides and upwards turn back, above-mentioned turning back still is not set, can both not only prevent battery internal volume reduction but also can positively prevent leakage.In addition, the present invention goes for nonaqueous electrolytic solution as the battery of electrolyte or with the battery of alkaline electrolyte, but can more effectively prevent leakage for the battery with nonaqueous electrolytic solution
Description of drawings
Fig. 1 is the sectional arrangement drawing of the major part of button cell.
Fig. 2 is the exploded view of button cell.
Fig. 3 is the sectional arrangement drawing of calking with mould.
Fig. 4 is the sectional arrangement drawing of major part of other embodiment of expression button cell.
Symbol description
The 1-battery case, 2-generating element, 3-seal washer, the 5-anode cover, 6-negative electrode casing, the underside wall of 11-anode cover, the periphery barrel of 12-anode cover, the bend of 12a-anode cover periphery barrel, the upper wall of 13-negative electrode casing, the outer peripheral sidewall of 15-negative electrode casing, the 16-wide diameter portion, the straight portion of 17-, 30-inner cylinder portion, 31-urceolus portion
Embodiment
(embodiment 1)
Fig. 1 and Fig. 2 represent the embodiment 1 as the button cell of object of the present invention, as shown in Figure 1, battery case 1 has: be incorporated in generating element 2 in the battery case 1, the seal washer 3 in the sealed cell shell 1, anode cover 5, be fixed on negative electrode casing 6 on the anode cover 5 opening inward flanges by seal washer 3 by calking, wholely form flat button type.By way of parenthesis, the outside dimension of battery case 1 is 12mm, gauge is 2mm up and down.
Generating element 2 comprises and is cured as discoidal positive electrode 7 and negative material 9 respectively, is installed in spacer 10 between the two.The main component of positive electrode 7 is a manganese dioxide, and negative material 9 is made of lithium metal.Spacer 10 is made of the nonwoven fabrics of polypropylene system.
As shown in Figure 2, be in the anode cover 5 of greenware condition before the battery assembling be comprise circular underside wall 11, the periphery barrel 12 of the vertical curve that makes progress from the neighboring of underside wall 11 discoid deeply.Negative electrode casing 6 is and comprises circular upper wall 13, shallow discoid from the outer peripheral sidewall 15 of the neighboring bending downwards of upper wall 13.There is no particular limitation for the material of these anode covers 5 and negative electrode casing 6, for example, can be any of stainless steel, iron, aluminium or nickel, or the alloy of these metals, or be that the metal plate of raw material forms this anode cover 5 and negative electrode casing 6 with composite material of the above-mentioned multiple metal of lamination etc. by punch process.
The outer peripheral sidewall 15 of negative electrode casing 6 have from the neighboring of upper wall 13 to oblique below be the wide diameter portion 16 that stretches out step-likely, with wide diameter portion 16 continuously and the straight portions 17 of linearly extension downwards.Up and down under the state of direction bending, wide diameter portion 16 is connected with straight portion 17 in the bottom of wide diameter portion 16.Seal washer 3 is that acrylic resin or polyphenylene sulfide etc. is had the ring-type injection-molded article of the plastic material of superior elasticity and insulating properties as raw material.
As shown in Figure 3, calking constitutes with the lower part with mould, promptly by: have that the upper end peripheral edge portion that is used for the periphery barrel 12 of anode cover 5 curves inwardly and the sealing die 26 that forms the curved face part 26a of bend 12a; Connect the knock-pin 27 of sealing die 26 from the below of sealing die 26; And seal upper punch 29 with the top of knock-pin 27 disposes Face to face.
The assembling of button cell is as follows: under the state that turns upside down with battery case 1, at first, seal washer 3 is contained on the outer peripheral sidewall 15 of negative electrode casing 6, and negative material 9 is packed in the negative electrode casing 6.Then, spacer 10 and positive electrode 7 are assembled in the negative electrode casing 6, after in negative electrode casing 6, injecting electrolyte from above cover anode cover 5.
When calking, the state that turns upside down that intactly keeps above-mentioned battery case 1, with upper wall 13 mountings of negative electrode casing 6 above knock-pin 27 after the 27a, the underside wall 11 that seals upper punch 29 and anode cover 5 is abutted against, and with knock-pin 27 with seal upper punch 29 and clamp battery case 1.Under this state, knock-pin 27 and seal upper punch 29 and descend.
So, then the upper end peripheral edge portion of the periphery barrel 12 of anode cover 5 by the seal washer 3 on the outer peripheral sidewall 15 that is installed in negative electrode casing 6 by the curved face part 26a calking of sealing die 26, and being bent to as shown in Figure 1 the shape that inwardly curls, bend 12a is crushed on the negative electrode casing 6 by seal washer 3 when being formed.Between anode cover 5 and negative electrode casing 6, be pressed into compressive state with this seal washer 3, thereby battery case 1 is sealed with the sealing shape.
Add man-hour at above-mentioned calking, as shown in Figure 1, the center of curvature O of the bend 12a of the upper end of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close outsides of negative electrode casing 6, and than the straight portion 17 more close upsides of negative electrode casing 6.The radius of curvature of above-mentioned bend 12a is 0.6mm.And, calking add man-hour between the bend 12a of the periphery barrel 12 of anode cover 5 and negative electrode casing 6 seal washer 3 the most compressed direction A with respect to the underside wall 11 of anode cover 5 87 degree that tilt.
And the front end inwardly of the bend 12a of the periphery barrel 12 of anode cover 5 is than the more close battery center side of the inner peripheral surface of the straight portion 17 of negative electrode casing 6.Bigger to the L1 of size up and down of the lower end of bend 12a below the underside wall 11 of anode cover 5 than the L2 of size up and down below the underside wall 11 of anode cover 5 to the upper end of the straight portion 17 of negative electrode casing 6.
Above-mentioned seal washer 3 the most compressed direction A need only in the scopes of 80～110 degree with respect to underside wall 11 angles of inclination of anode cover 5.
(embodiment 2)
In embodiment 2, the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover 5 is set at 0.8mm.Above-mentioned seal washer 3 the most compressed direction A are with respect to underside wall 11 inclinations 84 degree of anode cover 5.Because other are identical with embodiment 1, its explanation of Therefore, omited.
(embodiment 3)
In embodiment 3, the front end inwardly of the bend 12a of the periphery barrel 12 of anode cover 5 is than the more close battery of the inner peripheral surface of the straight portion 17 of negative electrode casing 6 outside.Because other embodiment 1 are identical, its explanation of Therefore, omited.
(embodiment 4)
In embodiment 4, the front end inwardly of the bend 12a of the periphery barrel 12 of anode cover 5 is than the more close battery of the inner peripheral surface of the straight portion 17 of negative electrode casing 6 outside, and the radius of curvature of bend 12a is 0.8mm.Because it is identical with embodiment 1 that other are put, its explanation of Therefore, omited.
(comparative example 1)
In comparative example 1, the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover 5 is set at 1.0mm.Other are identical with embodiment 1.
(comparative example 2)
In comparative example 2, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close battery center sides of negative electrode casing 6.Other are identical with embodiment 1.
(comparative example 3)
In comparative example 3, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close battery center sides of negative electrode casing 6, and the radius of curvature of bend 12a is 0.8mm.Other are identical with embodiment 1.
(comparative example 4)
In comparative example 4, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the outer peripheral sidewall 15 more close battery center sides of negative electrode casing 6, and the radius of curvature of bend 12a is 1.0mm.Other are identical with embodiment 1.
(comparative example 5)
In comparative example 5, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the wide diameter portion 16 more close downsides of negative electrode casing 6, and littler than the size L2 to the upper end of the straight portion 17 of negative electrode casing 6 below the underside wall 11 of anode cover 5 to the L1 of size up and down of the lower end of bend 12a below the underside wall 11 of anode cover 5.Other are identical with embodiment 1.
(comparative example 6)
In comparative example 6, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the wide diameter portion 16 more close downsides of negative electrode casing 6, and littler than the size L2 to the upper end of the straight portion 17 of negative electrode casing 6 below the underside wall 11 of anode cover 5 to the L1 of size up and down of the lower end of bend 12a below the underside wall 11 of anode cover 5.And the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover 5 is 0.8mm.Other are identical with embodiment 1.
(comparative example 7)
In comparative example 7, calking adds man-hour, and seal washer 3 the most compressed direction A are with respect to the underside wall 11 of anode cover 5 87 degree that tilt between the bend 12a of the outer cylindrical wall 12 of anode cover 5 and negative electrode casing 6.Other are identical with embodiment 1.
(comparative example 8)
In comparative example 8, above-mentioned seal washer 3 the most compressed direction A are with respect to underside wall 11 inclinations 78 degree of anode cover 5, and the radius of curvature of the bend 12a of the periphery barrel 12 of anode cover 5 is 0.8mm.Other are identical with embodiment 1.
(experiment)
Prepare each 100 on the various batteries of embodiment 1～4 and comparative example 1～8 respectively, and each battery is carried out repetition 240 times-10 degree cooling one hour, the warm one hour thermal shock experiment of 60 degree, and check whether electrolyte has leakage.Its result is as shown in table 1.
[table 1]
| The leakage number | |
| Embodiment 1 | 0 |
| Embodiment 2 | 3 |
| | 2 |
| Embodiment 4 | 4 |
| Comparative example 1 | 6 |
| Comparative example 2 | 9 |
| Comparative example 3 | 10 |
| Comparative example 4 | 13 |
| Comparative example 5 | 5 |
| Comparative example 6 | 8 |
| Comparative example 7 | 6 |
| Comparative example 8 | 8 |
As shown in table 1, the order of pressing embodiment 1, embodiment 2, comparative example 1 strengthen anode cover 5 outside, week barrel 12 the radius of curvature of bend 12a, then in embodiment 1, have and have 3 among 0, embodiment 2, have 6 batteries to produce the electrolytic tension leakage in the comparative example 1.Can think: because in comparative example 1, the bend 12a of the periphery barrel 12 of anode cover 5 is big in the face of the part on the top of the straight portion 17 of negative electrode casing 6, so brake forming along with bend 12a, the straight portion 17 of negative electrode casing 6 is pressed towards battery center side plastic deformation funnel, thereby has reduced the being adjacent to property with seal washer 3.
Can think: in comparative example 2～4, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the outer circle wall 15 more close inboards of negative electrode casing 6, the bend 12a of the periphery barrel 12 of anode cover 5 is near the outer peripheral sidewall 15 of negative electrode casing 6, identical with comparative example 1, bend 12a is big in the face of the part of the straight portion 17 of negative electrode casing 6,17 plastic deformations of straight portion, thus being adjacent to property with seal washer 3 reduced.
Can think: in comparative example 56, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the wide diameter portion 16 more close downsides of negative electrode casing 6, the same with comparative example 1, bend 12a is big in the face of the part of the straight portion 17 of negative electrode casing 6,17 plastic deformations of straight portion, thus being adjacent to property with seal washer 3 reduced.
Can think: in comparative example 78, because of calking processing puts on the straight portion 17 of negative electrode casing 6 significantly to the compression stress of seal washer 3,17 plastic deformations of straight portion, thus reduced being adjacent to property with seal washer 3.
As shown in Figure 4, the present invention is applicable to the button cell of following formation, promptly, except with the continuous inner cylinder portion 30 of wide diameter portion 16 and with the lower end of this inner cylinder portion 30 to the urceolus portion 31 that the foreign side of negative electrode casing 6 turns back up constitutes, the center of curvature O of the bend 12a of the periphery barrel 12 of anode cover 5 is than the wide diameter portion 16 of negative electrode casing 6 or the urceolus portion 31 more close outsides of straight portion 17.
Claims (7)
1. button cell, the battery case of taking in generating element comprise anode cover that the periphery barrel is bent upwards from the neighboring of underside wall and with outer peripheral sidewall from the reclinate negative electrode casing in the neighboring of upper wall,
The upper end peripheral edge portion of the described periphery barrel of described anode cover is processed by calking by the seal washer on the described outer peripheral sidewall that is installed on described negative electrode casing, thereby forms aduncate bend in the upper end of described periphery barrel, it is characterized in that,
The described outer peripheral sidewall of described negative electrode casing comprise from the neighboring of upper wall to oblique below be the step-like wide diameter portion that stretches out and with described wide diameter portion continuously and the straight portion of linearly extension downwards,
The center of curvature of the described bend of the upper end of described periphery barrel is than the more close outside of described outer peripheral sidewall of described negative electrode casing.
2. button cell according to claim 1 is characterized in that,
The described straight portion of described negative electrode casing is by constituting to the foreign side of described negative electrode casing and the urceolus portion of upwards turning back with the continuous inner cylinder portion of described wide diameter portion and with the lower end of described inner cylinder portion,
The center of curvature of the described upper end bend of the described periphery barrel of described anode cover is than the described wide diameter portion of described negative electrode casing or the more close outside of described urceolus portion of described straight portion.
3. button cell according to claim 1 and 2 is characterized in that,
The center of curvature of the described bend of the described periphery barrel of described anode cover is than the more close upside of described straight portion of described negative electrode casing.
4. according to claim 1 or 2 or 3 described button cells, it is characterized in that,
Than below the described underside wall of described anode cover, setting below the underside wall of described anode cover the size up and down of the lower end of described bend to the size the earth of the upper end of the described straight portion of described negative electrode casing.
5. button cell, the battery case of taking in generating element comprise anode cover that the periphery barrel is bent upwards from the neighboring of underside wall and with outer peripheral sidewall from the reclinate negative electrode casing in the neighboring of upper wall,
The upper end peripheral edge portion of the described periphery barrel of described anode cover is processed by calking by the seal washer on the described outer peripheral sidewall that is installed on described negative electrode casing, thereby forms aduncate bend in the upper end of described periphery barrel, it is characterized in that,
The described outer peripheral sidewall of described negative electrode casing comprise from the neighboring of upper wall to oblique below be the step-like wide diameter portion that stretches out and with described wide diameter portion continuously and the straight portion of linearly extension downwards,
The center of curvature of the described bend of the upper end of described periphery barrel is than the more close outside of described outer peripheral sidewall of described negative electrode casing,
Add man-hour at described calking, between the described bend and described negative electrode casing of the described periphery barrel of described anode cover, the most compressed direction setting of described seal washer is in the described underside wall with respect to described anode cover tilts the scopes of 80～110 degree.
6. button cell according to claim 1 or 5 is characterized in that,
The radius of curvature of the described bend of the described periphery barrel of described anode cover is 0.3～0.6mm.
7. button cell according to claim 1 or 5 is characterized in that,
The inside front end of the described bend of the described periphery barrel of described anode cover is than the center side of the more close battery of inner peripheral surface of the described straight portion of described negative electrode casing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004249575 | 2004-08-30 | ||
| JP2004-249575 | 2004-08-30 | ||
| JP2004249575A JP4070136B2 (en) | 2004-08-30 | 2004-08-30 | Coin battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1744347A true CN1744347A (en) | 2006-03-08 |
| CN1744347B CN1744347B (en) | 2010-05-05 |
Family
ID=36112597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100902177A Active CN1744347B (en) | 2004-08-30 | 2005-08-10 | Button cell |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4070136B2 (en) |
| CN (1) | CN1744347B (en) |
| TW (1) | TW200614567A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903865A (en) * | 2012-11-06 | 2013-01-30 | 无锡东港电池配件有限公司 | Battery steel shell structure |
| US20200185755A1 (en) | 2009-02-09 | 2020-06-11 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US10804506B2 (en) | 2009-06-18 | 2020-10-13 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100068614A1 (en) | 2008-09-18 | 2010-03-18 | Koji Yamaguchi | Flat battery |
| JP5638748B2 (en) * | 2008-09-18 | 2014-12-10 | 日立マクセル株式会社 | Flat battery |
| JP6489547B2 (en) * | 2015-03-12 | 2019-03-27 | セイコーインスツル株式会社 | Nonaqueous electrolyte secondary battery |
| CN107785534B (en) * | 2017-10-31 | 2023-07-28 | 宁波必霸能源有限公司 | Lithium manganese button cell negative pole top, lithium manganese button cell and processing method |
| KR20220008684A (en) * | 2020-07-14 | 2022-01-21 | 주식회사 엘지에너지솔루션 | Button type secondary battery |
-
2004
- 2004-08-30 JP JP2004249575A patent/JP4070136B2/en active Active
-
2005
- 2005-06-22 TW TW094120822A patent/TW200614567A/en unknown
- 2005-08-10 CN CN2005100902177A patent/CN1744347B/en active Active
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11233265B2 (en) | 2009-02-09 | 2022-01-25 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11233264B2 (en) | 2009-02-09 | 2022-01-25 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11791493B2 (en) | 2009-02-09 | 2023-10-17 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11276875B2 (en) | 2009-02-09 | 2022-03-15 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11024869B2 (en) | 2009-02-09 | 2021-06-01 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US20200185755A1 (en) | 2009-02-09 | 2020-06-11 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11258092B2 (en) | 2009-02-09 | 2022-02-22 | Varta Microbattery Gmbh | Button cells and method of producing same |
| US11024904B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US10804506B2 (en) | 2009-06-18 | 2020-10-13 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11791512B2 (en) | 2009-06-18 | 2023-10-17 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024907B1 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11217844B2 (en) | 2009-06-18 | 2022-01-04 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024906B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US10971776B2 (en) | 2009-06-18 | 2021-04-06 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11362384B2 (en) | 2009-06-18 | 2022-06-14 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11362385B2 (en) | 2009-06-18 | 2022-06-14 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11024905B2 (en) | 2009-06-18 | 2021-06-01 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| US11158896B2 (en) | 2009-06-18 | 2021-10-26 | Varta Microbattery Gmbh | Button cell having winding electrode and method for the production thereof |
| CN102903865A (en) * | 2012-11-06 | 2013-01-30 | 无锡东港电池配件有限公司 | Battery steel shell structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4070136B2 (en) | 2008-04-02 |
| TWI366294B (en) | 2012-06-11 |
| TW200614567A (en) | 2006-05-01 |
| JP2006066308A (en) | 2006-03-09 |
| CN1744347B (en) | 2010-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1744347A (en) | Button cell | |
| CN1194429C (en) | Square cell container and method of mfg. the cell container | |
| CN1295799C (en) | Flat square battery | |
| CN1568552A (en) | Battery can, and battery using the battery can | |
| CN101079498A (en) | Alkaline storage battery | |
| CN1619860A (en) | Closed square cell | |
| CN1153309C (en) | Electrochemical cell having inoreased anode-to-cathode interface area | |
| CN1246924C (en) | Square battery | |
| CN1268777A (en) | Sealed type battery with its electrolyte pouring opening easily to be sealed | |
| CN1960027A (en) | Sealed squareness battery | |
| CN1897346A (en) | Secondary battery | |
| CA2586642A1 (en) | Locking-typed battery pack | |
| CN1710729A (en) | Packing, production method of sealing element and crimp assembly, production method of battery housing lid, and production method of battery | |
| CN1612375A (en) | Sealed cell | |
| CN1313642A (en) | Electric current safety valve and manufacture thereof | |
| CN212625806U (en) | Lithium battery cap closing device | |
| CN1351386A (en) | Coiled electrode sets for battery and battery | |
| CN1713442A (en) | Secondary battery, cap assembly thereof and method of mounting safety valve therefor | |
| CN113097612A (en) | Cylindrical battery | |
| CN210956728U (en) | Alkaline manganese cell sealing structure and alkaline manganese cell | |
| CN109301104A (en) | Cylindrical battery nut cap combination and column secondary battery | |
| CN1198343C (en) | Secondary battery, its negative electrode casing and their manufacture thereof | |
| JP4831625B2 (en) | Coin battery | |
| CN211404537U (en) | Button battery case and button battery | |
| CN214336801U (en) | Battery top cap and power battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HITACHI MAXELL ENERGY LTD. Free format text: FORMER OWNER: HITACHI MAXELL LTD. Effective date: 20111012 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111012 Address after: Kyoto Japan Patentee after: Hitachi Maxell Address before: Osaka Japan Patentee before: Hitachi Maxell, Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180213 Address after: Kyoto Japan Patentee after: Mike SEIR Holdings Co., Ltd. Address before: Kyoto Japan Patentee before: Hitachi Maxell |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Kyoto Japan Patentee after: MAXELL, Ltd. Address before: Kyoto Japan Patentee before: MAXELL HOLDINGS, Ltd. |
|
| CP01 | Change in the name or title of a patent holder |