CN101106183A - Flat form battery - Google Patents

Flat form battery Download PDF

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Publication number
CN101106183A
CN101106183A CNA2007101360413A CN200710136041A CN101106183A CN 101106183 A CN101106183 A CN 101106183A CN A2007101360413 A CNA2007101360413 A CN A2007101360413A CN 200710136041 A CN200710136041 A CN 200710136041A CN 101106183 A CN101106183 A CN 101106183A
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CN
China
Prior art keywords
mentioned
seal closure
battery
box
coating portion
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.)
Pending
Application number
CNA2007101360413A
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Chinese (zh)
Inventor
岸田章
佐野健一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Publication of CN101106183A publication Critical patent/CN101106183A/en
Pending legal-status Critical Current

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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

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  • Sealing Battery Cases Or Jackets (AREA)
  • Primary Cells (AREA)

Abstract

The invention provides a flat form cell which can prevent outer flasking and seal closure generate shortcircuit due to contact with the other cell, without changing overall dimension of cell. A cathode case (5) is imbeded into anode case (3) open towards by gasket (6) to form cell container (1). At the state of baring the up surface (5a) of the cathode case (5), the gasket (6) makes the anode case (3) and cathode case (5) seal and insulate. The insulating coating part (11) with insulatibity is made to surround the perimeter of the up surface (5a) of the cathode case (5).

Description

Flat-shaped battery
Technical field
The present invention relates to the flat-shaped battery of button shaped cell or Coin-shape cell etc.
Background technology
Power supply as the external equipment of miniaturized electronics that carries usefulness etc. uses pancake primary cell more.This flat-shaped battery, its generating key element folding and unfolding that comprises positive electrode and negative material etc. in battery case, constitute the metal outer dress box of above-mentioned battery case and seal closure respectively double as be used for positive and negative termination contact connection terminals with external equipment.
Above-mentioned seal closure is adorned outside sealing gasket is embedded in the opening of box, adorns outward between box and the seal closure with above-mentioned sealing gasket insulation.Because it is little to adorn the interval of box and seal closure outward, sheet metal etc. are very high with the possibility that outer dress box contacts with seal closure simultaneously, therefore, make outer dress box and seal closure risk of short-circuits.
Especially in the occasion of the discarded flat-shaped battery that uses, then be easy to cause above-mentioned short circuit.In a word, reclaim though above-mentioned battery concentrates on after use in the recovery box that electrical appliance shop or household electrical appliances jobbing house etc. locate to dispose, battery in reclaiming box with irregular stacking states folding and unfolding.Therefore, other battery contacts with any one battery with the posture that for example tilts sometimes, and the outer dress box of a battery and seal closure are because of other battery short circuit sometimes.
In addition, since above-mentioned battery be sometimes residual under the state of a large amount of battery capacities as the battery that uses and discarded, thereby if produce the discharge that above-mentioned short circuit just produces big electric current, owing to the gas that produces in the heating of the battery that produces and the battery thereupon, battery might produce and break etc.As its countermeasure, (Japan is real to open clear 58-52864 communique, Fig. 2) and shown in the patent documentation 2 (Japanese kokai publication hei 3-116652 communique, Fig. 1-3), has considered to coat outer dress box and seal closure with insulative resin as patent documentation 1.
The battery of patent documentation 1, because whole peripheral side of dress box (anodal box) coats with insulative resin outside it, thereby the outer of battery exceeded standard through the corresponding increase of size.Thereupon, might be able to not be installed on the external equipment.At this moment, though can consider the outer of battery itself reduced the part suitable with the thickness of insulative resin through size, there is the also problem of corresponding minimizing of battery capacity.
In addition, as patent documentation 3 (TOHKEMY 2002-93395 communique, Fig. 1) shown in, externally in the positive and negative terminal of equipment, a side terminal is connected (being positive terminal) with the peripheral side contact of outer dress box usually in patent documentation 3.Therefore, as mentioned above, if the whole peripheral side of outer dress box coats with insulative resin, then external equipment can not be connected with battery.
The battery of patent documentation 2, half coats with the insulating bag overlay film at least owing to adorn peripheral side circumferential of box (anodal box) outside, thereby battery is outer through the corresponding increase of size, might be able to not be installed on the external equipment.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of overall dimension that does not change battery, can prevent the flat-shaped battery that makes outer dress box and seal closure short circuit because of contacting with other battery etc.
As the flat-shaped battery of object of the present invention as shown in Figure 1, be by sealing gasket 6 seal closure 5 to be embedded on the outer dress box 3 of upper shed to form battery case 1, under the state that the upper surface 5a of seal closure 5 exposes, utilize sealing gasket 6 to make insulation between outer dress box 3 and the seal closure 5.At this flat-shaped battery, except circular battery such as button shaped cell and Coin-shape cell, also comprise polygonal batteries such as quadrangle.As flat-shaped battery, comprise outer dress box 3 for positive pole seal closure 5 for the situation of negative pole and outer dress box 3 for negative pole seal closure 5 for anodal situation the two.In addition, ought to be that the diameter dimension of for example battery is bigger than height dimension as Coin-shape cell.
The present invention as depicted in figs. 1 and 2, it is characterized in that with the coating portion 11 with insulating properties make along the periphery of the upper surface 5a of seal closure 5 around state.The raw material of the coating portion 11 here should be uv-hardening resins, thermmohardening type or normal temperature hardened resin.Coating portion 11 by seal closure 5 is applied, prints, methods such as spraying or stickup form.Raw material in coating portion 11 are occasions of uv-hardening resin, presclerotic resin is coated to seal closure 5 first-class after, carry out ultraviolet irradiation and make its sclerosis.Raw material in coating portion 11 are occasions of above-mentioned thermmohardening type resin, presclerotic resin is coated to seal closure 5 first-class after, heat and make its sclerosis.Coating portion 11 both can be a hard, also can have flexibility.
If be described in detail, then seal closure 5 has the periphery of surperficial 5a from it and adorns the 5b of shoulder portion that extend the inside of box 3 outward downwards, and coating portion 11 is formed on periphery 5d from the upper surface 5a of seal closure 5 to the above-mentioned shoulder 5b of portion.
If be described in detail, as shown in Figure 2, coating portion 11 is formed at the regional 5c regional 5d in addition of terminal 16 contacts of said external equipment at the upper surface 5a of seal closure 5.
Coating portion 11 is in the occasion that forms with the raw material that are difficult to produce corrosion etc., from the viewpoint of cost, preferably uses iron or forms with the iron and steel of iron as main component.Seal closure 5 both can whole only be formed by iron or steel, also can be as coclad etc. the metal of iron or steel and other kind be overlapped into stratiform.At this moment, outermost layer can be iron or steel.
Raw material in coating portion 11 are occasions of uv-hardening resin, result from above-mentioned iron or steel the corrosion of the presclerotic resin of coating etc. owing to be easy to generate, thereby seal closure 5 preferably form the regional 5d that joins with coating portion 11 with stainless steel at least.Seal closure 5 both can wholely only form with stainless steel, also can become stratiform to form the metallic combination of stainless steel and other kind.At this moment, outermost layer then forms with stainless steel.In addition, in the seal closure 5, the part beyond the regional 5d that joins with coating portion 11 also can be with formation such as above-mentioned steel.
The inside of battery case 1 accommodates the generating key element 2 that comprises the negative material that is made of lithium metal or lithium alloy.
According to the present invention, even, also can utilize coating portion 11 to suppress to clamp the outer dress box 3 and seal closure 5 short circuits of sealing gasket 6 adjacency in the occasion of having touched with metallic object 12 misconnections such as other battery or sheet metals.And because 11 in coating portion is formed near the periphery of upper surface 5a of seal closure 5, and the peripheral side 3a etc. that is not formed on outer dress box 3 locates, thereby, by configuration coating portion 11, can suppress the increase of the overall dimension of battery.Therefore, in the battery compartment 15 that is installed in the external equipment that open ended battery size is predetermined, also battery case 1 need not be reduced fully, the corresponding minimizing of battery capacity can be prevented.
Because it is little to form the regional 5d of coating portion 11, thereby can reduce the raw-material use amount of coating portion 11, can suppress battery and make required cost.And, form the regional corresponding minimizing of above-mentioned coating portion 11, can realize of even coating and the sclerosis of above-mentioned raw material to battery.
When coating portion 11 being formed on periphery 5d from the upper surface 5a of seal closure 5 to the 5b of shoulder portion, as shown in Figure 1, even metallic object 12 is outwards to adorn the attitude contact that box 3 one side direction have a down dip from the edge side of the upper surface 5a of seal closure 5, because coating portion 11 also is coated to the 5b of shoulder portion of the seal closure 5 that faces metallic object 12, thereby can prevents seal closure 5 reliably and adorn short circuit between the box 3 outward.
The anode and cathode terminals 16,17 of external equipment contacts with the peripheral side 3a that adorns box 3 outward with the central portion 5c of the upper surface 5a of seal closure 5 respectively usually.Correspondingly, owing to be that regional 5d beyond the central portion 5c of upper surface 5a of seal closure 5 forms coating portion 11 in the zone of above-mentioned terminal 16 contacts, thereby can guarantee that the terminal 16 of external equipment contacts reliably with seal closure 5.
When using iron or steel to form seal closure 5, can reduce the material cost of seal closure 5, required cost in can corresponding reduction battery making.
When using uv-hardening resin as the raw material of coating portion 11, owing to can improve manufacturing efficient at chien shih hardening of resin in short-term with ultraviolet irradiation, and be difficult to heating battery, thereby can suppress battery performance and reduce because of superheated by above-mentioned ultraviolet irradiation.And, use stainless steels by seal closure 5, can prevent seal closure 5 reliably owing to corrosion etc. takes place presclerotic resin, coating portion after preventing from reliably to harden 11 peels off from battery etc.
When having applied the present invention to hold the flat-shaped battery of the generating key element 2 that comprises the negative material that constitutes by lithium metal or lithium alloy, when short circuit, has very big caloric value though after this flat-shaped battery externally uses in the equipment the above voltage of 2V is arranged also, but, can suppress reliably to generate heat because of above-mentioned short circuit by utilizing coating of the present invention portion 11 to prevent short circuit.
Description of drawings
Fig. 1 is the longitudinal section of flat-shaped battery of the present invention.
Fig. 2 is the vertical view of flat-shaped battery of the present invention.
Fig. 3 is the longitudinal section of expression with the state of flat-shaped battery folding and unfolding in the battery compartment of electronic equipment etc.
Among the figure:
1-battery case, the 2-key element of generating electricity, the anodal box of 3-, 5-negative pole box, 5a-upper surface, 5b-shoulder portion, 5c-central portion, 5d-periphery, 6-sealing gasket, 9-negative material, 11-insulation coating portion 11,16-negative terminal.
Embodiment
Accompanying drawing is represented is embodiment as the primary cell of the flat-shaped battery of object of the present invention.Battery case 1 constitutes by the pateriform anodal box (adorning box outward) 3 of upward opening with to the pateriform negative pole box (seal closure) 5 of under shed as shown in Figure 1, and integral body is made flat coin shapes.The nominal voltage of above-mentioned flat-shaped battery is 3V.In the inside of battery case 1, folding and unfolding has generating key element 2, disposes circular sealing gasket 6 between anodal box 3 and negative pole box 5.
And, held in anodal box 3 inside under the state of generating key element 2, negative pole box 5 is embedded into the opening inward flange side of anodal box 3 through sealing gasket 6, and by riveted and fixed (state of Fig. 1), has formed and utilized sealing gasket 6 to have carried out sealed battery container 1 between anodal box 3 and the negative pole box 5.Realize insulation between 6 pairs of anodal boxes 3 of sealing gasket and the negative pole box 5.The outside dimension of above-mentioned flat-shaped battery is 20mm, and total thickness is of a size of 3.2mm.
Generating key element 2 comprises: contain the positive electrode 7 as the disc-shape of the manganese dioxide of positive active material etc.; The negative material 9 of the disc-shape that the lithium metal or the lithium alloy of negative electrode active material are made; The spacer 10 that nonwoven is fabric and contain LiClO 4Deng nonaqueous dielectric, negative material 9 is configured in the upside of positive electrode 7 across spacer 10.Sealing gasket 6 is made of for the injection moulding spare of raw material polyamide-based resin, acrylic resin or poly-p-phenylene sulfide resin etc.
Anodal box 3 and negative pole box 5 are that the iron and steel of main component etc. constitutes by the ferroalloy of stainless steel etc., iron or with iron.As depicted in figs. 1 and 2, the periphery along the upper surface 5a of negative pole box 5 coats the insulation coating portion 11 with insulating properties that forms around state.That is, insulation coating portion 11 forms the 5c of portion regional 5d in addition in the central at the upper surface 5a of negative pole box 5.Insulation coating portion 11 is for example with UV cured type, and thermmohardening type or normal temperature hardened etc. insulative resin are that raw material forms.
Insulation coating portion 11 forms gauge in the scope of 0.01-0.5mm.The gauge of insulation coating portion 11 is under the situation bigger than 0.5mm, and the total thickness size of flat-shaped battery is corresponding excessive, and is bad owing to be difficult to be contained in the set battery compartment 15 (with reference to Fig. 3) of the flat-shaped battery electronic equipment that uses standardized product.
Negative pole box 5 has the 5b of shoulder portion that the periphery of surperficial 5a from it extends to the inside of anodal box 3 downwards as shown in Figure 1, and insulation coating portion 11 is formed on periphery 5d from the upper surface 5a of negative pole box 5 to the 5b of shoulder portion.Thus, for example, even the metallic object 12 of other battery etc. contacts with the top periphery of battery case 1 with the posture that tilts, because the periphery 5d of the upper surface 5a of negative pole box 5 and the 5b of shoulder portion are insulated coating portion 11 and coat, thereby can prevent that metallic object 12 from contacting (with reference to the double dot dash line figure of Fig. 1) with the periphery 5d of the upper surface 5a of negative pole box 5 with the 5b of shoulder portion in the upper end that touches anodal box 3.
Among Fig. 1,, also can be that the upper surface 5a of the upper end of anodal box 3 and negative pole box 5 is contour substantially though the upper end of anodal box 3 is lower than the upper surface 5a of negative pole box 5.In this case, also can prevent that metallic object 12 from touching periphery 5d and the 5b of shoulder portion of the upper surface 5a of the upper end of anodal box 3 and negative pole box 5 simultaneously by insulation coating portion 11.Though insulation coating portion 11 is as long as coat the periphery 5d of the upper surface 5a of negative pole box 5 at least, the 5b of shoulder portion that also can be coated to than negative pole box 5 more leans on downside.
The central portion 5c of the upper surface 5a of the negative pole box 5 that is surrounded by insulation coating portion 11 exposes, as shown in Figure 3, when in the battery compartment 15 of electronic equipment, having held flat-shaped battery, contact with the central portion 5c of the upper surface 5a of negative pole box 5 and be connected (with reference to Fig. 2) at the leading section of the negative terminal 16 of battery compartment 15 configuration.Contact with the peripheral side 3a of anodal box 3 and be connected at the leading section of the positive terminal 17 of battery compartment 15 configuration.
Used the occasion of uv-hardening resin as the insulative resin that forms insulation coating portion 11, since with ultraviolet irradiation at chien shih hardening of resin in short-term its to make efficient very high, but owing to generally be faintly acid in presclerotic liquid condition, thereby if be trapped in for a long time in the negative pole box 5 with presclerotic liquid condition original state, the situation of surface oxidisation 5 corrosion of negative pole box then appears making sometimes and.This situation will diminish the attractive in appearance of battery, and produce under the situation of getting rusty in a large number, and the insulation coating portion 11 after the sclerosis might peel off.
Therefore, as the occasion of above-mentioned insulative resin use uv-hardening resin, preferably negative pole box 5 uses stainless steels.Use the occasion of normal temperature hardened or thermmohardening type resin as above-mentioned insulative resin, owing to almost there is not above-mentioned generation of getting rusty, thereby preferably use than the cheap iron of stainless steel with the iron and steel of iron as main component.
In addition, negative pole box 5 also can be made as coclad multiple metal coincidence is stratiform.At this moment, as the occasion of above-mentioned insulative resin use uv-hardening resin, best outermost metal level is above-mentioned stainless steel; Use the occasion of normal temperature hardened or thermmohardening type resin as above-mentioned insulative resin, best outermost metal level is above-mentioned iron or iron and steel.
In addition, the upper end of the sealing gasket 6 outside being exposed to battery also can form insulation coating portion 11, also can form insulation coating portion 11 on the outer surface of the anodal box 3 except the peripheral side 3a of anodal box 3.Though the lower surface 3b of the anodal box 3 that can not contact with the positive terminal 17 that insulation coating portion 11 coats battery compartment 15, but on the lower surface 3b of anodal box 3 with for example laser beam marking the brand of battery, sign language and various patterns etc., in this case, preferably save the coating of using insulative resin.Though insulative resin can dye, also can be transparent or semitransparent.

Claims (6)

1. flat-shaped battery, by sealing gasket seal closure is embedded on the outer dress box of upper shed and forms battery case, under the state that the upper surface of above-mentioned seal closure exposes, utilize above-mentioned sealing gasket to make between above-mentioned outer dress box and the above-mentioned seal closure and insulate, it is characterized in that:
The coating portion that will have an insulating properties make along the periphery of the upper surface of above-mentioned seal closure around state.
2. flat-shaped battery according to claim 1 is characterized in that:
Above-mentioned seal closure has surperficial from it periphery and adorn the shoulder portion that extend the inside of box downwards outside above-mentioned,
Above-mentioned coating portion is formed on from the periphery of the upper surface of above-mentioned seal closure to above-mentioned shoulder portion.
3. flat-shaped battery according to claim 1 and 2 is characterized in that:
Above-mentioned coating portion is formed at the zone beyond the termination contact zone of external equipment at the upper surface of above-mentioned seal closure.
4. according to claim 1 or 2 or 3 described flat-shaped batteries, it is characterized in that:
Above-mentioned seal closure uses iron or forms with the iron and steel of iron as main component.
5. according to claim 1 or 2 or 3 described flat-shaped batteries, it is characterized in that:
The raw material of above-mentioned coating portion are uv-hardening resins,
Above-mentioned seal closure forms the zone that joins with above-mentioned coating portion with stainless steel at least.
6. according to claim 1 or 2 or 3 or 4 or 5 described flat-shaped batteries, it is characterized in that:
Accommodate the generating key element in the inside of above-mentioned battery case,
Above-mentioned generating key element comprises the negative material that is made of lithium metal or lithium alloy.
CNA2007101360413A 2006-07-14 2007-07-13 Flat form battery Pending CN101106183A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006193595A JP5077913B2 (en) 2006-07-14 2006-07-14 Flat battery
JP2006193595 2006-07-14

Publications (1)

Publication Number Publication Date
CN101106183A true CN101106183A (en) 2008-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007101360413A Pending CN101106183A (en) 2006-07-14 2007-07-13 Flat form battery

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CN (1) CN101106183A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105098106A (en) * 2015-08-31 2015-11-25 王新峰 Metal housing structure of battery and insulating treatment method for metal housing structure
CN105830245A (en) * 2013-12-19 2016-08-03 斯沃奇集团研究和开发有限公司 Battery with non-conductive, structured surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018028961A (en) * 2014-12-24 2018-02-22 パナソニックＩｐマネジメント株式会社 Coin cell

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159055A (en) * 1980-05-13 1981-12-08 Yuasa Battery Co Ltd Battery
JPS57145266A (en) * 1981-03-03 1982-09-08 Toshiba Battery Co Ltd Organic solvent battery
JPS58108651A (en) * 1981-12-22 1983-06-28 Toshiba Battery Co Ltd Manufacture of organic solvent battery
JPS58141563U (en) * 1982-03-19 1983-09-24 日立マクセル株式会社 Button battery
JPH04223045A (en) * 1990-12-26 1992-08-12 Matsushita Electric Ind Co Ltd Flat type cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105830245A (en) * 2013-12-19 2016-08-03 斯沃奇集团研究和开发有限公司 Battery with non-conductive, structured surface
CN105098106A (en) * 2015-08-31 2015-11-25 王新峰 Metal housing structure of battery and insulating treatment method for metal housing structure

Also Published As

Publication number Publication date
JP5077913B2 (en) 2012-11-21
JP2008021566A (en) 2008-01-31

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