JPH06310122A - Flat battery - Google Patents
Flat batteryInfo
- Publication number
- JPH06310122A JPH06310122A JP5099273A JP9927393A JPH06310122A JP H06310122 A JPH06310122 A JP H06310122A JP 5099273 A JP5099273 A JP 5099273A JP 9927393 A JP9927393 A JP 9927393A JP H06310122 A JPH06310122 A JP H06310122A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- electrode current
- positive electrode
- negative electrode
- terminal
- 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
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
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、偏平形電池に関し、特
に機器側端子の凸部が嵌合接続される部分の改良に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat battery, and more particularly to improvement of a portion to which a convex portion of a device side terminal is fitted and connected.
【０００２】[0002]
【従来の技術】電池は電気の缶詰として、いつでもどこ
でも手軽に使える電源として電子時計の数１０ｍＡｈか
らポータブル機器用の数１０Ａｈのものもある。形も円
筒形，ボタン形，コイン形，偏平形およびペーパー形な
どいろいろある。特に、最近は機器の軽薄短小化が進
み、偏平形やペーパー形の電池が要求される傾向にあ
る。これらの電池は小さく、薄くするために、金属箔を
用いて集電体と外装とを兼ねる構造にしており、端子部
もこの金属箔をそのまま使用している。2. Description of the Related Art A battery can be used as a can of electricity and can be easily used anytime and anywhere from several 10 mAh of electronic timepieces to several 10 Ah of portable timepieces. There are various shapes such as cylindrical shape, button shape, coin shape, flat shape and paper shape. In particular, recently, as devices have become lighter, thinner, shorter and smaller, flat type and paper type batteries have been required. In order to make these batteries small and thin, a metal foil is used to have a structure that serves as both a current collector and an exterior, and the metal foil is used as it is for the terminals.
【０００３】図３は、従来の偏平形電池の構造を示した
ものである。この偏平形電池は、ステンレス箔で形成さ
れた外装を兼ねる正極集電体１と負極集電体２とが対向
配設されている。正極集電体１と負極集電体２と間に
は、発電要素３が収納されている。該発電要素３は、正
極集電体１の内面側に設けられている正極活物質４と、
負極集電体２の内面側に設けられている負極活物質５
と、これら正極活物質４と負極活物質５との間に介在さ
れているセパレータ６とで構成されている。正極集電体
１と負極集電体２との対向部分の周囲はホットメルト状
の封止材７で密閉されている。封止材７に対応する正極
集電体１の各部分には、機器側正極端子８の凸部８ａが
嵌合接続される凹型端子部１ａが絞り加工で設けられて
いる。封止材７に対応する負極集電体２の各部分には、
機器側負極端子９の凸部９ａが嵌合接続される凹型端子
部２ａが絞り加工で設けられている。FIG. 3 shows the structure of a conventional flat battery. In this flat type battery, a positive electrode current collector 1 and a negative electrode current collector 2 which are formed of stainless steel foil and also serve as an outer package are arranged to face each other. A power generation element 3 is housed between the positive electrode current collector 1 and the negative electrode current collector 2. The power generation element 3 includes a positive electrode active material 4 provided on the inner surface side of the positive electrode current collector 1,
Negative electrode active material 5 provided on the inner surface side of the negative electrode current collector 2.
And a separator 6 interposed between the positive electrode active material 4 and the negative electrode active material 5. The periphery of the facing portion between the positive electrode current collector 1 and the negative electrode current collector 2 is sealed with a hot-melt sealing material 7. At each portion of the positive electrode current collector 1 corresponding to the sealing material 7, a concave terminal portion 1a to which the convex portion 8a of the device-side positive electrode terminal 8 is fitted and connected is provided by drawing. In each part of the negative electrode current collector 2 corresponding to the sealing material 7,
The concave terminal portion 2a to which the convex portion 9a of the device-side negative terminal 9 is fitted and connected is provided by drawing.
【０００４】このような偏平形電池は、正極集電体１と
負極集電体２とに凹型端子部１ａ，２ａを設け、これら
凹型端子部１ａ，２ａに機器側正極端子８の凸部８ａと
機器側負極端子９の凸部９ａを嵌合接続することによ
り、接続外れを防止し、機器と電池の接続の信頼性を上
げている。In such a flat battery, concave terminal portions 1a and 2a are provided on the positive electrode current collector 1 and the negative electrode current collector 2, and the convex portion 8a of the device side positive electrode terminal 8 is provided on these concave terminal portions 1a and 2a. By fittingly connecting the convex portion 9a of the device-side negative terminal 9 with the device, disconnection is prevented, and the reliability of the connection between the device and the battery is improved.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな偏平形電池では、金属箔で形成された正極集電体１
と負極集電体２とに相対応して凹型端子部１ａ，２ａを
設けると、封止材７内でこれら凹型端子部１ａ，２ａの
先端が相互に接触して短絡する恐れがある。However, in such a flat battery, the positive electrode current collector 1 formed of a metal foil is used.
When the concave terminal portions 1a and 2a are provided correspondingly to the negative electrode current collector 2 and the negative electrode current collector 2, the tips of the concave terminal portions 1a and 2a may contact each other in the sealing material 7 and short-circuit.
【０００６】このため、凹型端子部１ａ，２ａを設ける
位置をずらすことが提案されている。しかし、機器側の
端子８，９に凸部８ａ，９ａを設けているため、予想外
の力が端子８，９にかかると、金属箔で形成された正極
集電体１，負極集電体２の凹型端子部１ａ，２ａ及び封
止材７を凸部８ａ，９ａが突き破り、反対側の負極集電
体２，正極集電体１と短絡することが予想される。Therefore, it has been proposed to shift the positions where the concave terminal portions 1a and 2a are provided. However, since the terminals 8 and 9 on the device side are provided with the convex portions 8a and 9a, when an unexpected force is applied to the terminals 8 and 9, the positive electrode current collector 1 and the negative electrode current collector formed of the metal foil are formed. It is expected that the convex terminals 8a and 9a pierce the concave terminal portions 1a and 2a and the sealing material 7 of No. 2 and short-circuit with the negative electrode current collector 2 and the positive electrode current collector 1 on the opposite side.
【０００７】そのため電池や電池を使用する機器におい
て、安全性，信頼性が充分確保できない。Therefore, safety and reliability cannot be sufficiently ensured in a battery or a device using the battery.
【０００８】本発明の目的は、電池や電池を使用する機
器の安全性や信頼性を充分に確保できる偏平形電池を提
供することにある。An object of the present invention is to provide a flat type battery which can sufficiently secure the safety and reliability of the battery and the equipment using the battery.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成する本
発明の偏平形電池の構成を説明すると、本発明は外装を
兼ねる金属箔製の正極集電体と負極集電体との間に正極
活物質や負極活物質からなる発電要素が収納され、前記
正極集電体と前記負極集電体との周囲が封止材で密閉さ
れ、前記封止材に対応する前記正極集電体と前記負極集
電体との各部分には機器側端子の凸部が嵌合接続される
凹型端子部がそれぞれ設けられている偏平形電池におい
て、前記正極集電体と前記負極集電体との各凹型端子部
に対応する反対側の導電体の部分には該集電体が存在し
ない穴部がそれぞれ設けられていることを特徴とする。The structure of the flat battery of the present invention that achieves the above-mentioned object will be described. The present invention provides a structure in which a positive electrode current collector and a negative electrode current collector made of a metal foil also serving as an outer package are provided. A power generation element made of a positive electrode active material or a negative electrode active material is housed, and the periphery of the positive electrode current collector and the negative electrode current collector is sealed with a sealing material, and the positive electrode current collector corresponding to the sealing material, In a flat battery in which a concave terminal portion to which a convex portion of a device-side terminal is fitted and connected is provided in each portion with the negative electrode current collector, the positive electrode current collector and the negative electrode current collector It is characterized in that a hole portion where the current collector does not exist is provided in a portion of the conductor on the opposite side corresponding to each concave terminal portion.
【００１０】[0010]
【作用】このように正極集電体と負極集電体との各凹型
端子部に対応する反対側の導電体の部分に、該集電体が
存在しない穴部をそれぞれ設けると、予想外の力が機器
側端子にかかり、金属箔で形成された正極集電体，負極
集電体の凹型端子部及び封止材を機器側端子の凸部が突
き破り、反対側の負極集電体，正極集電体に突出して
も、その位置には集電体が存在しない穴部が設けられて
いるので、短絡を起こさない。In this way, if holes are provided in the opposite side portions of the positive electrode current collector and the negative electrode current collector corresponding to the concave terminal portions, respectively, the holes where the current collector does not exist are provided, which is unexpected. The force is applied to the device side terminal, and the convex part of the device side terminal pierces through the positive electrode current collector, the concave terminal part of the negative electrode current collector, and the sealing material formed of metal foil, and the negative electrode current collector and positive electrode on the opposite side. Even if the current collector is projected, a hole in which the current collector does not exist is provided at that position, so that a short circuit does not occur.
【００１１】[0011]
【実施例】図１及び図２は、本発明に係る偏平形電池の
一実施例を示したものである。なお、前述した図３と対
応する部分には、同一符号を付けて示している。1 and 2 show an embodiment of a flat type battery according to the present invention. The parts corresponding to those in FIG. 3 described above are designated by the same reference numerals.
【００１２】本実施例の偏平形電池でも、ステンレス箔
で形成された外装を兼ねる正極集電体１と負極集電体２
とが対向配設され、これら正極集電体１と負極集電体２
と間にが発電要素３が収納されている。該発電要素３
は、正極集電体１の内面側に設けられている正極活物質
４と、負極集電体２の内面側に設けられている負極活物
質５と、これら正極活物質４と負極活物質５との間に介
在されているセパレータ６とで構成されている。正極活
物質４は、二酸化マンガンとカーボンと結着剤とを練合
してシート状に形成されたものを用いている。負極活物
質５は、リチウム箔で形成されている。セパレータ６に
は、非水電解液が含浸されている。正極集電体１と負極
集電体２との対向部分の周囲は、ホットメルト状の封止
材７で密閉されている。Also in the flat battery of this embodiment, the positive electrode current collector 1 and the negative electrode current collector 2 which are also formed of stainless steel foil and also serve as an outer package.
Are arranged opposite to each other, and these positive electrode current collector 1 and negative electrode current collector 2
The power generating element 3 is housed between and. The power generation element 3
Is a positive electrode active material 4 provided on the inner surface side of the positive electrode current collector 1, a negative electrode active material 5 provided on the inner surface side of the negative electrode current collector 2, and the positive electrode active material 4 and the negative electrode active material 5. And a separator 6 that is interposed between and. The positive electrode active material 4 is formed by kneading manganese dioxide, carbon, and a binder to form a sheet. The negative electrode active material 5 is formed of lithium foil. The separator 6 is impregnated with the non-aqueous electrolytic solution. The periphery of the facing portion between the positive electrode current collector 1 and the negative electrode current collector 2 is sealed with a hot-melt sealing material 7.
【００１３】封止材７に対応する正極集電体１の各部分
には、機器側正極端子８の凸部８ａが嵌合接続される凹
型端子部１ａが絞り加工で設けられている。封止材７に
対応する負極集電体２の各部分には、機器側負極端子９
の凸部９ａが嵌合接続される凹型端子部２ａが絞り加工
で設けられている。これら凹型端子部１ａ，２ａは、相
互に対向しないように位置をずらして設けられている。
正極集電体１と負極集電体２との各凹型端子部１ａ，２
ａに対応する反対側の導電体２，１の部分には、該集電
体が存在しない穴部１０，１１がそれぞれ設けられてい
る。At each portion of the positive electrode current collector 1 corresponding to the sealing material 7, a concave terminal portion 1a to which the convex portion 8a of the device side positive electrode terminal 8 is fitted and connected is provided by drawing. At each portion of the negative electrode current collector 2 corresponding to the sealing material 7, the device-side negative electrode terminal 9 is provided.
The concave terminal portion 2a to which the convex portion 9a is fitted and connected is provided by drawing. The concave terminal portions 1a and 2a are provided so as to be displaced from each other so as not to face each other.
Recessed terminal portions 1a, 2 of the positive electrode current collector 1 and the negative electrode current collector 2
Holes 10 and 11 where the current collector does not exist are provided in the portions of the conductors 2 and 1 on the opposite side corresponding to a, respectively.
【００１４】このように正極集電体１と負極集電体２と
の各凹型端子部１ａ，２ａに対応する反対側の導電体
２，１の部分に、該集電体が存在しない穴部１０，１１
をそれぞれ設けると、予想外の力が機器側端子８，９に
かかり、金属箔で形成された正極集電体１，負極集電体
２の凹型端子部１ａ，２ａ及び封止材７を機器側端子
８，９の凸部８ａ，９ａが突き破り、反対側の負極集電
体２，正極集電体１に突出しても、その位置には集電体
が存在しない穴部１０，１１が設けられているので、短
絡を起こさない。As described above, in the portions of the conductors 2 and 1 on the opposite sides of the positive electrode current collector 1 and the negative electrode current collector 2 which correspond to the concave terminal portions 1a and 2a, holes where the current collector does not exist are formed. 10, 11
When each is provided, an unexpected force is applied to the device-side terminals 8 and 9, and the concave terminal portions 1a and 2a of the positive electrode current collector 1 and the negative electrode current collector 2 formed of a metal foil and the sealing material 7 are applied to the device. Even if the protrusions 8a and 9a of the side terminals 8 and 9 are pierced and protrude to the negative electrode current collector 2 and the positive electrode current collector 1 on the opposite side, holes 10 and 11 where the current collector does not exist are provided at the positions. Therefore, it does not cause a short circuit.
【００１５】なお、これら穴部１０，１１は、封止材７
で充填して正極集電体１，負極集電体２の表面に穴部１
０，１１による窪みが存在しないようにすることもでき
る。The holes 10 and 11 are formed by the sealing material 7.
And the hole portion 1 on the surface of the positive electrode current collector 1 and the negative electrode current collector 2.
It is also possible that the dents 0 and 11 do not exist.
【００１６】[0016]
【発明の効果】以上説明したように、本発明に係る偏平
形電池は、正極集電体と負極集電体との各凹型端子部に
対応する反対側の導電体の部分に、該集電体が存在しな
い穴部をそれぞれ設けているので、予想外の力が機器側
端子にかかり、金属箔で形成された正極集電体，負極集
電体の凹型端子部及び封止材を機器側端子の凸部が突き
破り、反対側の負極集電体，正極集電体に突出しても、
その位置は集電体が存在しない穴部であるため、短絡の
発生を防止することができる。また、集電体の穴部は封
止材のところで設けられているので、電池性能に支障は
生じない。従って、本発明に係る偏平形電池によれば、
電池や電池を使用する機器の安全性や信頼性を充分に確
保することができる。As described above, the flat type battery according to the present invention has a structure in which the positive electrode current collector and the negative electrode current collector are provided on the opposite side of the conductor corresponding to the concave terminal portions. Since each hole with no body is provided, unexpected force is applied to the device side terminal, and the positive electrode current collector, the concave terminal part of the negative electrode current collector, and the sealing material formed of metal foil are installed on the device side. Even if the protruding part of the terminal breaks through and protrudes on the opposite side negative electrode current collector and positive electrode current collector,
Since the position is a hole in which no current collector exists, it is possible to prevent the occurrence of a short circuit. Further, since the hole portion of the current collector is provided at the sealing material, the battery performance is not hindered. Therefore, according to the flat battery according to the present invention,
It is possible to sufficiently secure the safety and reliability of the battery and the equipment using the battery.
【図１】本発明に係る偏平形電池の一実施例を示す要部
縦断面図である。FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of a flat battery according to the present invention.
【図２】本実施例の偏平形電池の要部斜視図である。FIG. 2 is a perspective view of a main part of the flat battery of the present embodiment.
【図３】従来の偏平形電池の要部縦断面図である。FIG. 3 is a vertical sectional view of a main part of a conventional flat battery.
１ 正極集電体 １ａ 凹型端子部 ２ 負極集電体 ２ａ 凹型端子部 ３ 発電要素 ４ 正極活物質 ５ 負極活物質 ６ セパレータ ７ 封止材 ８ 機器側正極端子 ８ａ 凸部 ９ 機器側負極端子 ９ａ 凸部 １０，１１ 穴部 DESCRIPTION OF SYMBOLS 1 Positive electrode collector 1a Recessed terminal part 2 Negative electrode collector 2a Recessed terminal part 3 Power generation element 4 Positive electrode active material 5 Negative electrode active material 6 Separator 7 Encapsulating material 8 Device side positive electrode terminal 8a Convex part 9 Device side negative electrode terminal 9a Convex Part 10, 11 hole
Claims (1)
極集電体との間に正極活物質や負極活物質からなる発電
要素が収納され、前記正極集電体と前記負極集電体との
周囲が封止材で密閉され、前記封止材に対応する前記正
極集電体と前記負極集電体との各部分には機器側端子の
凸部が嵌合接続される凹型端子部がそれぞれ設けられて
いる偏平形電池において、 前記正極集電体と前記負極集電体との各凹型端子部に対
応する反対側の導電体の部分には該集電体が存在しない
穴部がそれぞれ設けられていることを特徴とする偏平形
電池。1. A power generating element made of a positive electrode active material or a negative electrode active material is housed between a positive electrode current collector and a negative electrode current collector, which are also made of metal foil and also serve as an exterior, and the positive electrode current collector and the negative electrode current collector are contained. A concave terminal in which the periphery of the body is sealed with a sealing material, and the convex portion of the device-side terminal is fitted and connected to each part of the positive electrode current collector and the negative electrode current collector corresponding to the sealing material. In a flat battery in which each portion is provided, a hole portion in which the current collector does not exist in the portion of the conductor on the opposite side corresponding to each concave terminal portion of the positive electrode current collector and the negative electrode current collector A flat-type battery, characterized in that each is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5099273A JP2864939B2 (en) | 1993-04-26 | 1993-04-26 | Flat battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5099273A JP2864939B2 (en) | 1993-04-26 | 1993-04-26 | Flat battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06310122A true JPH06310122A (en) | 1994-11-04 |
| JP2864939B2 JP2864939B2 (en) | 1999-03-08 |
Family
ID=14243076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5099273A Expired - Lifetime JP2864939B2 (en) | 1993-04-26 | 1993-04-26 | Flat battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2864939B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008165997A (en) * | 2006-12-27 | 2008-07-17 | Casio Comput Co Ltd | Structure of battery |
-
1993
- 1993-04-26 JP JP5099273A patent/JP2864939B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008165997A (en) * | 2006-12-27 | 2008-07-17 | Casio Comput Co Ltd | Structure of battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2864939B2 (en) | 1999-03-08 |
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