JPS58169777A - Flat type battery - Google Patents
Flat type batteryInfo
- Publication number
- JPS58169777A JPS58169777A JP5401182A JP5401182A JPS58169777A JP S58169777 A JPS58169777 A JP S58169777A JP 5401182 A JP5401182 A JP 5401182A JP 5401182 A JP5401182 A JP 5401182A JP S58169777 A JPS58169777 A JP S58169777A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- anode
- positive electrode
- cathode
- graphite layer
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 20
- 239000010439 graphite Substances 0.000 claims abstract description 20
- 239000006183 anode active material Substances 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007774 positive electrode material Substances 0.000 abstract 3
- 238000000197 pyrolysis Methods 0.000 abstract 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 10
- 239000006182 cathode active material Substances 0.000 description 5
- 229910001923 silver oxide Inorganic materials 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat electrodes
Abstract
Description
【発明の詳細な説明】
本発明は腕時計、電卓、カメラ等の小型機器に使用され
る偏平型電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat battery used in small devices such as wristwatches, calculators, and cameras.
従来のこの棟の電池の一例を第１図を用いて説明する。An example of a conventional battery of this type will be explained with reference to FIG.
第１図は従来の偏平型電池の縦断面半裁図である。FIG. 1 is a vertical cross-sectional half-sectional view of a conventional flat battery.
この電池の電池ケースは、カップ状の陽極缶１と、この
陽極缶ｌにガスケット３を介して組込まれるキャップ状
の陰極缶２とにより構成されている０
この電池ケース内には、セパレータ６を挾んで対向する
電解液を含浸した陰極活物質５と陽極活物質４とが内包
されている。The battery case of this battery is composed of a cup-shaped anode can 1 and a cap-shaped cathode can 2 that is assembled into the anode can 1 via a gasket 3. A separator 6 is installed inside this battery case. A cathode active material 5 and an anode active material 4 impregnated with an electrolyte and facing each other are included.
このような構成よりなる電池においては、陽極缶ｌと陰
極缶２との間に設けられたガスケット３を、陽極缶ｌの
上部開口部１ａの周縁を内方に加締めることにより圧縮
させ、このガスケット３の圧縮反力によりガスケット３
と陽極缶１若しくは陰極缶２とを密着させて漏液を防止
していた。In a battery having such a configuration, the gasket 3 provided between the anode can 1 and the cathode can 2 is compressed by inwardly tightening the periphery of the upper opening 1a of the anode can 1. Due to the compression reaction force of gasket 3, gasket 3
The anode can 1 or the cathode can 2 are brought into close contact to prevent liquid leakage.
従って、この電池の耐漏液性を向上させるためには、ガ
スケット３の厚みを厚くして、ガスケット３の圧縮反力
を大きくすることが必要であったしかしながら、ガスケ
ット３の厚みを厚くすると、電池全体積に対するガスケ
ット３の占める体積が増大し、内容物の容量を減少させ
ずに同じ放成容献のものを供給するためには電池ケース
自体を大きくすることが必要とされていた。Therefore, in order to improve the leakage resistance of this battery, it was necessary to increase the thickness of the gasket 3 and increase the compression reaction force of the gasket 3.However, when the thickness of the gasket 3 is increased, the battery The volume occupied by the gasket 3 relative to the total volume has increased, and in order to supply the same release capacity without reducing the capacity of the contents, it has been necessary to increase the size of the battery case itself.
また、耐漏液性を向上させるために、ガスケット３の圧
縮量を増加させると、ガスケット３を圧動させる力によ
り、陰極缶２のカール部２ａが内方に移動し、電池缶内
圧を高めてしまうと共に、ガスケット３のクリープ劣化
率を増加させてしまい、圧縮反力を強めることができず
、かえって漏液発生の要因を生じさせることになってい
た。Furthermore, when the amount of compression of the gasket 3 is increased in order to improve the leakage resistance, the curled portion 2a of the cathode can 2 moves inward due to the force that presses the gasket 3, increasing the internal pressure of the battery can. At the same time, this increases the creep deterioration rate of the gasket 3, making it impossible to strengthen the compression reaction force and, on the contrary, causing leakage.
上記従来例の欠点を解消するために、従来のガスケット
に類するものを使用せずに、出願人による特願昭５６−
２１３９０８号に開示されている偏平型電池に代表され
るような陽極缶と陰極缶との間に絶縁塗膜を設けたもの
が提案されている０其体的には、断面形状が口状をした
陰極缶と、断１１１１形状がｎ状をした陽極缶とを焼ば
めすることにヨリ、セパレータにより分割されるタブレ
ット状の陽極活物質と電解液を含浸した陰極活物質とを
内包し、かつ陰極缶の円筒状立上部の全部若しくは一部
の表面をコーティング剤にてコーティングして絶縁塗膜
を形成してなる偏平型電池であるっ解消し、良好な耐漏
液性等を得ることができるものである。本発明は、この
ように絶縁塗膜を有する陰極缶に陽極缶を焼ばめさせる
偏平型電池の改良に係るものであり、タブレット状の陽
極活物質の上面にグラファイト層を設け、陰極缶に陽極
缶を焼ばめさせる時の内容物への悪影響をなくし、容量
及び耐漏液性を向上させることを目的とする以下図面に
基づいて本発明の詳細な説明する第２図は本発明の偏平
型電池の断面半載図である。γは断面形状が口状をした
金属材料よりなる陰極缶である。この陰極缶フは、有底
部フａと、この有底部７ａの外周より垂直上方に立ち上
がった円筒状の立上部７ｂとこの立上部７ｂの内壁中程
に設けられた段部７Ｃとからなるものであり、立上部７
ｂの表面には、フッ素系、シリコン系、ポリフエニンン
サルファイド系、ポリアミド系、またはポリイミド系の
絶縁塗膜７ｄがコーティングされているｏ８は断面形状
が口状をした金属材料よりなる陽極缶であり、上平部８
ａと上平部８ａの外周より垂直下方に折曲した円筒部８
ｂとより構成されている。この陽極缶８と陰極缶７は、
陽極缶８の円筒部８ｂを陰極缶フの立上部１ｂの外周面
に焼ばめ、あるいは圧入することにより絶縁塗膜′７（
Ｌを介して水密的に嵌着されてｈる。９は電解液を含浸
した陰極活物質、ｌＯはタブレット状の陽極活物質であ
り、それぞれ陰極缶）の段部７Ｃに係止するセパレータ
１１により分割されている。陽極活物質ｌＯの上部には
、グラファイトと連結剤とよりなるグラファイト層１０
ａが設けられている。このグラファイト層１０ａは、陽
極缶８を陰極缶７に焼ばめする際に、陽極缶８の熱が直
接陽極活物質１０の主成分に伝わることを防いでいる。In order to eliminate the drawbacks of the above-mentioned conventional gaskets, the applicant's patent application
213908, in which an insulating film is provided between the anode can and the cathode can. By shrink-fitting the cathode can and the anode can having an n-shaped cross section, a tablet-shaped anode active material separated by a separator and a cathode active material impregnated with an electrolyte are included, In addition, it is a flat type battery in which all or a part of the surface of the cylindrical upright part of the cathode can is coated with a coating agent to form an insulating film. It is possible. The present invention relates to the improvement of a flat battery in which an anode can is shrink-fitted to a cathode can having an insulating coating film, and a graphite layer is provided on the top surface of a tablet-shaped anode active material, and the cathode can is fitted with a graphite layer. The purpose of this invention is to eliminate the adverse effect on the contents and improve the capacity and leakage resistance when the anode can is shrink-fitted. Figure 2 shows a flat view of the present invention. It is a cross-sectional half-mounted view of a type battery. γ is a cathode can made of a metal material and having a mouth-shaped cross section. This cathode can is composed of a bottomed part a, a cylindrical rising part 7b rising vertically upward from the outer periphery of the bottomed part 7a, and a stepped part 7C provided in the middle of the inner wall of this rising part 7b. and the rising part 7
The surface of b is coated with a fluorine-based, silicon-based, polyphenylene sulfide-based, polyamide-based, or polyimide-based insulating coating 7d. o8 is an anode can made of a metal material with a mouth-shaped cross section. Yes, upper flat part 8
a and a cylindrical portion 8 bent vertically downward from the outer periphery of the upper flat portion 8a.
It is composed of b. The anode can 8 and cathode can 7 are
By shrink-fitting or press-fitting the cylindrical portion 8b of the anode can 8 to the outer peripheral surface of the raised portion 1b of the cathode can, an insulating coating '7 (
It is fitted in a watertight manner via L. 9 is a cathode active material impregnated with an electrolytic solution, and IO is a tablet-shaped anode active material, each of which is divided by a separator 11 that is engaged with a stepped portion 7C of a cathode can. On top of the anode active material IO, there is a graphite layer 10 made of graphite and a coupling agent.
A is provided. This graphite layer 10a prevents the heat of the anode can 8 from being directly transmitted to the main component of the anode active material 10 when the anode can 8 is shrink-fitted to the cathode can 7.
陽極活物質１０に酸化銀を用いる酸化銀電池においては
、陽極活物質１０の温度が１６０℃以上になると酸化銀
が酸素を放出しはじめるため、電池内圧が高まり、陽極
缶８を浮き上がらすてしまい、陽極缶８と陽極活物質１
０との電気接触が不良になり、電圧が不安定となる。ま
た、セパレータ１１の外周部を陰極缶マの段部７Ｃに押
え付ける力が不足し、内部短絡による自己劣化を招くこ
とにもなる。さらに、電池内圧の上昇は漏液の原因とも
なるため、極力避けることが必要である。本発明におい
ては、陽極活物質１０の上部にグラファイト層１０ａを
設けているので陽極缶８の熱が陽極活物質１０の主成分
に伝わる前に、完全に陽極缶８を陰極缶７に嵌着するこ
とができ、即座に外部冷却を行うことにより焼ばめ時に
おける陽極活物質の劣化を防いでいる。このグラファイ
ト層１０ａは、タブレット状の陽極活物質１０を形成し
た後、その上面に形成するか、又は酸化銀電池等におい
ては、グラファイトが酸化銀等に少量混入することは何
等支障がないのでこの陽極活物質を形成する時に陰極活
物質１０の上部にグラファイトを多量に混入させて、グ
ラファイトと連結剤とよりなるグラファイト層１０ａを
形成してもよい。In a silver oxide battery that uses silver oxide as the anode active material 10, when the temperature of the anode active material 10 reaches 160° C. or higher, the silver oxide begins to release oxygen, which increases the internal pressure of the battery and causes the anode can 8 to float. , anode can 8 and anode active material 1
The electrical contact with 0 becomes poor and the voltage becomes unstable. Furthermore, there is insufficient force to press the outer peripheral portion of the separator 11 against the stepped portion 7C of the cathode can, which may lead to self-deterioration due to internal short circuit. Furthermore, since an increase in battery internal pressure may cause leakage, it is necessary to avoid this as much as possible. In the present invention, since the graphite layer 10a is provided on the top of the anode active material 10, the anode can 8 is completely fitted into the cathode can 7 before the heat of the anode can 8 is transferred to the main component of the anode active material 10. Immediate external cooling prevents deterioration of the anode active material during shrink fitting. This graphite layer 10a is formed on the top surface after forming the tablet-shaped anode active material 10, or in the case of a silver oxide battery etc., since there is no problem in mixing a small amount of graphite with silver oxide etc. When forming the anode active material, a large amount of graphite may be mixed into the upper part of the cathode active material 10 to form a graphite layer 10a made of graphite and a coupling agent.
第３図は第２図に示す偏平型電池における陽極缶８を陰
極缶７に焼ばめする前の状態を示す図である。タブレッ
ト状の陽極活物質１０は、グラファイト層１０ａが陰極
缶７の円筒部７ｂより高さｈ程飛び出すように配置され
ている。陽極缶８を陰極缶フに焼ばめする時には、陽極
活物質１０の１＝部、即ちグラファイト層１０ａを陽極
缶８の上半１警μ８ａにより押圧して陰極缶７の内部へ
押し込み、セパレータ１１の外周部を陰極缶γの段部フ
Ｃに圧接するよう嵌着される。この時に２００〜３００
℃に加熱された陽極缶８の熱はグラファイト層１０ａを
介して陽極活物質１０の主成分に伝わるため、陽極活物
質１０の熱分解を起す温度、例えば１６０℃に達するま
・でにはかなりの時間がかかるため、この間に陽極缶８
を陰極缶１に完全に嵌着させ、即座に冷却して陽極活物
質１０が熱分解することを防いでいる。このように上記
本発□
１す拌こよれば、陽極活物質の熱劣化による酸素発生が
なくなるため、陽極缶の浮き上がりがなく、電池総丈の
不揃い、陽極缶と陽極活物質との電気接触イく良による
重圧不安定、セパレータ押えの不完全により生ずる内部
短絡と、これに起因する自己劣化及び内圧上昇による漏
液を防止することができる。また、陽極活物質の電池製
造中における熱劣化がないため、陽極活物質を有効に使
用することができ、高容量の電池を提供することができ
る。上記のように本発明は、自己劣化及び耐漏液性ｒ；
を向上させる偏平型電池を提供するものである。FIG. 3 is a diagram showing a state before the anode can 8 is shrink-fitted to the cathode can 7 in the flat battery shown in FIG. The tablet-shaped anode active material 10 is arranged so that the graphite layer 10a protrudes from the cylindrical portion 7b of the cathode can 7 by a height h. When the anode can 8 is shrink-fitted to the cathode can, 1 part of the anode active material 10, that is, the graphite layer 10a, is pressed by the upper half of the anode can 8 by the upper part 8a and pushed into the cathode can 7, and the separator It is fitted so that the outer circumferential portion of the cathode can 11 is pressed into contact with the stepped portion C of the cathode can γ. 200-300 at this time
Since the heat of the anode can 8 heated to ℃ is transmitted to the main component of the anode active material 10 through the graphite layer 10a, it takes a long time to reach the temperature at which thermal decomposition of the anode active material 10 occurs, for example 160℃. During this time, the anode can 8
is completely fitted into the cathode can 1 and immediately cooled to prevent the anode active material 10 from being thermally decomposed. In this way, by stirring the above-mentioned invention □ 1, oxygen generation due to thermal deterioration of the anode active material is eliminated, so there is no lifting of the anode can, uneven battery length, and electrical contact between the anode can and the anode active material. It is possible to prevent pressure instability due to insufficient pressure, internal short circuit caused by incomplete separator holding, self-deterioration caused by this, and leakage due to internal pressure increase. Furthermore, since there is no thermal deterioration of the anode active material during battery manufacturing, the anode active material can be used effectively and a high capacity battery can be provided. As described above, the present invention provides a flat battery that improves self-deterioration and leakage resistance.
第１図は従来の偏平型電池の縦断面半載図、第２図は本
発明の偏平型電池の縦断面半載図、第３図は第２図に示
す偏平型電池の製造過程における状態を示す図である。
１．８・・・陽極缶、２．フ・・・陰極缶、４．１０・
・・陽極活物質、５，９・・・陰極活物質、６．１１・
・・セパレータ、フｄ・・・絶縁塗膜、１０ａ・・・グ
ラファイト層。
第 １ 図
手 続 補 正 書
軸訂庁長官若杉和夫殿
１、事件の表示
昭和 ５７年特許願第 ０５４０１１ 号２、発明の名
称
偏平型電池
３補正をする者
事件との関係 特許出願人
電話０５５５−３−１２３１
自 発
ξ〕 袖正により増加する発明の数
６、補正の対象
明細書の「発明の詳細な説明」の欄
７、補正の内容
明細書５頁６行目「焼ばめ、あるいは圧入すること」と
あるを「焼ばめすること」と補正する。FIG. 1 is a vertical cross-sectional half-mounted view of a conventional flat-type battery, FIG. 2 is a vertical cross-sectional half-mounted view of a flat-type battery of the present invention, and FIG. 3 is a state of the flat-type battery shown in FIG. 2 during the manufacturing process. FIG. 1.8...Anode can, 2. Fu... cathode can, 4.10.
... Anode active material, 5,9... Cathode active material, 6.11.
...Separator, hood...insulating coating film, 10a...graphite layer. Figure 1 Procedures Amendment Mr. Kazuo Wakasugi, Director-General of the Bookmark Office 1, Indication of the case 1982 Patent Application No. 054011 2, Name of the invention Flat type battery 3 Relationship with the case Person making the amendment Patent applicant telephone number 0555 -3-1231 Spontaneous ξ] Number of inventions increased by sleeve correction 6, “Detailed explanation of the invention” column 7 of the specification subject to amendment, page 5 line 6 of the specification of contents of the amendment “Shrink fit, Or, the phrase "to press fit" has been corrected to "shrink fit."
Claims (1)
コーティングした陰極缶と、該陰極缶に焼ばめされる断
面形状がｎ状をした陽極缶とにより、セパレータによっ
て分割される陰極活物質及び陽極活物質を内包してなる
偏平型電池において前記陽極活物質は前記陽極缶に対面
する部分にグラファイト層を有することをｔｖｆｉとす
る偏平型電池。A cathode active is divided by a separator, consisting of a cathode can with a U-shaped cross-section and partially coated with a coating agent, and an anode can with an N-shaped cross-section that is shrink-fitted to the cathode can. tvfi is a flat battery comprising a material and an anode active material, wherein the anode active material has a graphite layer in a portion facing the anode can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5401182A JPS58169777A (en) | 1982-03-30 | 1982-03-30 | Flat type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5401182A JPS58169777A (en) | 1982-03-30 | 1982-03-30 | Flat type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58169777A true JPS58169777A (en) | 1983-10-06 |
Family
ID=12958640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5401182A Pending JPS58169777A (en) | 1982-03-30 | 1982-03-30 | Flat type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169777A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6461765B1 (en) | 2000-02-14 | 2002-10-08 | Aer Energy Resources Inc. | Metal-air cell housing with improved peripheral seal design |
-
1982
- 1982-03-30 JP JP5401182A patent/JPS58169777A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6461765B1 (en) | 2000-02-14 | 2002-10-08 | Aer Energy Resources Inc. | Metal-air cell housing with improved peripheral seal design |
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