JP2007149484A - Flat battery - Google Patents
Flat battery Download PDFInfo
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- JP2007149484A JP2007149484A JP2005341740A JP2005341740A JP2007149484A JP 2007149484 A JP2007149484 A JP 2007149484A JP 2005341740 A JP2005341740 A JP 2005341740A JP 2005341740 A JP2005341740 A JP 2005341740A JP 2007149484 A JP2007149484 A JP 2007149484A
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- sealing plate
- battery
- plate support
- gasket
- positive electrode
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- 238000007789 sealing Methods 0.000 claims abstract description 87
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- 229910052744 lithium Inorganic materials 0.000 abstract description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 14
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 150000002641 lithium Chemical class 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 239000004734 Polyphenylene sulfide Substances 0.000 description 8
- 229920000069 polyphenylene sulfide Polymers 0.000 description 8
- 230000035939 shock Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- WHXSMMKQMYFTQS-BJUDXGSMSA-N (6Li)Lithium Chemical compound [6Li] WHXSMMKQMYFTQS-BJUDXGSMSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-IGMARMGPSA-N lithium-7 atom Chemical compound [7Li] WHXSMMKQMYFTQS-IGMARMGPSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- Y02E60/12—
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Primary Cells (AREA)
Abstract
Description
本発明は正極ケース、負極封口板およびガスケットにより発電要素を密閉した扁平型電池に関するものである。 The present invention relates to a flat battery in which a power generation element is sealed with a positive electrode case, a negative electrode sealing plate and a gasket.
扁平型リチウム電池は体積あたりのエネルギー密度が高く、また高電圧であるため、エレクトロニクス機器を中心に使用されてきた。近年、携帯電子機器の急速なコードレス化、ポータブル化により、扁平型リチウム電池はその駆動用電源として需要が増大しており、更にこれら携帯電子機器の消費電流増大に伴い、より大容量の電池、加えて長期間安定して使用できる封口部の信頼性も求められている。扁平型リチウム電池では放電容量の向上、封口部の信頼性を向上させる上で、正極ケース、負極封口板、封口板支持体の形状、およびガスケット材質が重要なポイントの一つとなる。 Flat lithium batteries have been used mainly in electronic devices because of their high energy density per volume and high voltage. In recent years, due to the rapid cordless and portable use of portable electronic devices, the demand for flat-type lithium batteries has increased as the power source for driving them. In addition, the reliability of the sealing portion that can be used stably for a long time is also required. In the flat type lithium battery, the positive electrode case, the negative electrode sealing plate, the shape of the sealing plate support, and the gasket material are important points in improving the discharge capacity and improving the reliability of the sealing portion.
従来の構造を踏襲しながら放電容量が大きく、電池高さの高い（高さ３．０ｍｍ以上）電池を設計するには封口板折り返し部の長さを長くする方法、封口板折り返し部の長さを短く、且つ正極ケースの高さを短くし封口する方法、ガスケット底部厚みを厚くする方法が挙げられる。しかしながらいずれも封口板、ガスケットのデッドスペースが大きく発電活物質の充填量が減少するために体積効率が悪く、放電容量が低下する。 In order to design a battery with a large discharge capacity and a high battery height (height of 3.0 mm or more) while following the conventional structure, a method of increasing the length of the sealing plate folding portion, the length of the sealing plate folding portion And a method of shortening and sealing the height of the positive electrode case and a method of increasing the thickness of the gasket bottom. However, in both cases, the dead space of the sealing plate and the gasket is large and the filling amount of the power generation active material is reduced, so that the volume efficiency is poor and the discharge capacity is lowered.
これらの課題を解決するために特許文献１に示されるような対策が施されている。すなわち、図２に示されるような逆ハット状の封口板支持体８を具備しこの円周部８ａにガスケットおよび封口板開口部を配置せしめ封口するものである。
しかしながら特許文献１の方法は封口時に逆ハット状の封口板支持体円周部に力が加わり、封口前に比較して図３に示されるように封口板支持体円周部が下方へ変形する可能性がある。
However, in the method of
近年、より高温下、さらに長期間安定な封口状態を継続するためにガスケット材料が検討されており、ポリプロピレン樹脂へのフィラー添加、またエンジニアリングプラスチック樹脂などが採用されつつある。これらの材料の中には前記ポリプロピレン樹脂等に比較して曲げ強さ、曲げ弾性率が非常に高いものもあり、一例としてポリプロピレン樹脂（ＰＰ）とポリフェニレンスルフィド樹脂（ＰＰＳ）の曲げ弾性率を比較するとそれぞれ１〜２Ｇｐａ、１０〜２０Ｇｐａであり、ポリフェニレンスルフィド樹脂は非常に圧縮されにくい材料である。これらの材料をガスケットとして用い封口した際には、ガスケット自体が硬く圧縮され難いため、逆ハット状の封口板支持体円周部が図３の様に変形し易く、結果として耐漏液特性、長期信頼性の低下を誘発する。また逆ハット状の封口板支持体の板厚を厚くし材料の剛性、強度を高めることで封口時の逆ハット状封口板支持体円周部の変形を防止しようとすると、電池内容積に占める逆ハット状封口板支持体の体積割合が増加するため正極活物質充填量が少なくなり、放電容量が低下する。 In recent years, gasket materials have been studied in order to continue a stable sealing state at a higher temperature and for a longer period of time, and fillers added to polypropylene resins and engineering plastic resins are being adopted. Some of these materials have very high flexural strength and flexural modulus compared to the polypropylene resin, etc. As an example, the flexural modulus of polypropylene resin (PP) and polyphenylene sulfide resin (PPS) are compared. Then, it is 1 to 2 Gpa and 10 to 20 Gpa, respectively, and polyphenylene sulfide resin is a material that is very difficult to compress. When these materials are sealed as gaskets, the gasket itself is hard and difficult to compress, so the circumference of the reverse-hat-shaped sealing plate support body is easily deformed as shown in FIG. Induces a decrease in reliability. In addition, by increasing the thickness of the reverse-hat-shaped sealing plate support and increasing the rigidity and strength of the material, the reverse hat-shaped sealing plate support will occupy the battery's internal volume when trying to prevent the deformation of the circumference of the reverse-hat-shaped sealing plate support. Since the volume ratio of the inverted hat-shaped sealing plate support increases, the positive electrode active material filling amount decreases, and the discharge capacity decreases.
前記従来の課題を解決するために、本発明は扁平型電池用封口板支持体であって、前記封口板支持体は内径部と外径部とを有し、また内径部と外径部の長さが等しく、縦断面形状がU字状であることを特徴とする。 In order to solve the above-described conventional problems, the present invention is a flat battery sealing plate support, the sealing plate support having an inner diameter portion and an outer diameter portion, and an inner diameter portion and an outer diameter portion. The lengths are equal and the longitudinal cross-sectional shape is U-shaped.
本発明によれば、封口板支持体上面部にガスケット底部を配置せしめることにより、封口時の力を十分に受け止める剛性、強度を有すことで、封口時のガスケット底部圧縮量を十分にとることができるとともにバラツキの少ないものとなすことができ、耐漏液性、長期信頼性に優れた電池を提供することが可能となる。 According to the present invention, by placing the gasket bottom on the top surface of the sealing plate support, it has sufficient rigidity and strength to sufficiently receive the force at the time of sealing, so that the amount of compression at the bottom of the gasket at the time of sealing is sufficiently taken. In addition, it is possible to provide a battery having excellent leakage resistance and long-term reliability.
以上の説明の通り、本発明によれば電池高さの高い（高さ３．０ｍｍ以上）扁平型電池において、内径部と外径部とを有し、また内径部と外径部の長さが等しく、その断面形状がU字状である扁平型電池用封口板支持体上面部に、ガスケットを配置せしめることにより、封口時にガスケットの底部圧縮量を十分にとることができ且つバラツキの少ないものとすることができ、耐漏液特性に優れた電池を提供することができる。 As described above, according to the present invention, a flat battery having a high battery height (height of 3.0 mm or more) has an inner diameter portion and an outer diameter portion, and the length of the inner diameter portion and the outer diameter portion. By placing a gasket on the top of the flat battery sealing plate support that has the same U-shaped cross-section, the bottom compression amount of the gasket can be taken sufficiently during sealing, and there is little variation. Thus, a battery having excellent leakage resistance can be provided.
本発明は金属リチウムからなる負極と、正極と、電解液と、前記負極と前記正極との間に介在して前記電解液を保持するセパレータからなる発電要素と、封口板と、正極ケースと、前記封口板と前記正極ケースの間に介在されるガスケットと、前記正極ケースと前記ガスケットとの間に介在する封口板支持体とを具備する扁平型リチウム電池において、前記封口板支持体は内径部と外径部とを有し、また内径部と外径部の長さが等しく、縦断面形状がU字状であることを特徴とする。 The present invention comprises a negative electrode made of metallic lithium, a positive electrode, an electrolytic solution, a power generation element comprising a separator interposed between the negative electrode and the positive electrode to hold the electrolytic solution, a sealing plate, a positive electrode case, In a flat lithium battery comprising a gasket interposed between the sealing plate and the positive electrode case, and a sealing plate support interposed between the positive electrode case and the gasket, the sealing plate support has an inner diameter portion. And the outer diameter portion, the inner diameter portion and the outer diameter portion are equal in length, and the longitudinal sectional shape is U-shaped.
また、前記ガスケット底部が前記封口板支持体上面部に支持され、さらには、封口板支持体の内径部端部及び外径部端部が正極ケース内面に接することを特徴とするものである。 The bottom of the gasket is supported by the top surface of the sealing plate support, and the inner and outer diameter ends of the sealing plate support are in contact with the inner surface of the positive electrode case.
以下、本発明の実施の形態について図面を参照して説明する。なお、以下に示す実施の形態は本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
本発明の実施の形態に係る扁平型リチウム電池の断面模式図を図１に示す。正極合剤５と負極リチウム６がセパレータ４を介して対向配置されており、電解液を充填して、封口板支持体上面部７ａにガスケット３を介して負極封口板１を配し、正極ケース２の開口上端部を内方に屈曲させることで封口されており、扁平型の電池に構成されている。封口によって、封口板折り返し部と封口板支持体上面部に介在するガスケット底部が圧縮される。
FIG. 1 shows a schematic cross-sectional view of a flat lithium battery according to an embodiment of the present invention. A
封口板支持体７は内径部と外径部とを有し、また内径部と外径部の長さが等しく、その縦断面形状がU字状であり、封口板支持体７をこの様な形状に加工を施すことにより、封口時に封口板折り返し部を介して作用する下方向への力を封口板支持体上面部７ａで十分に支えることが可能となり、ガスケット底部をバラツキ無く均一に圧縮でき、その結果、耐漏液特性が向上する。
The
（実施例１）
以下の手順に従って、図１に示す構造を有する扁平型リチウム一次電池を作製した。
Example 1
A flat lithium primary battery having the structure shown in FIG. 1 was produced according to the following procedure.
正極活物質として二酸化マンガンを用い、結着剤として４フッ化エチレン樹脂（ＰＴＦＥ）を用い、さらに導電剤として黒鉛を混合し、得られた混合物を加圧成型することにより、ペレット状の正極合剤５を作製した。負極６は薄板状の金属リチウムを円盤状に打ち抜き、形成したものである。さらにセパレータ４はポリプロピレンの不織布からなり、負極６と同様に円形に打ち抜き加工が施されている。電解液は、１，２−ジメトキシエタン
とプロピレンカーボネートを１：１の体積比で混合した溶媒に、電解質として過塩素酸リチウムを０．５ｍｏｌ／ｌの濃度になるよう溶解させ調製した。
By using manganese dioxide as the positive electrode active material, using tetrafluoroethylene resin (PTFE) as the binder, further mixing graphite as the conductive agent, and press-molding the resulting mixture,
負極封口板１、正極ケース２はステンレス鋼を所定の形状に加工したものである。封口板支持体７はステンレス鋼を内径部と外径部および上面部を有する筒形状に深絞りしたものであって、その内径部高さと内径部高さが等しい。一方、これらとともに電池容器を形成するガスケット３は、ポリフェニレンスルフィド樹脂（ＰＰＳ）を環状に射出成型されたものを用いた。負極封口板１とガスケット３の接触面、および正極ケース２と封口板支持体７およびガスケット３の接触面には、アスファルトを主成分とする封止剤を塗布した。
The negative
正極合剤５と負極リチウム６がセパレータ４を介して対向配置されており、電解液を充填して、封口板支持体７の上面部７ａにガスケット３を介して負極封口板１を配し、正極ケース２の開口上端部を内方に屈曲させることで封口が施されており、扁平型の電池に構成されている。この形態を有する扁平型二酸化マンガンリチウム一次電池を作製し電池Ａとした。なお、電池Ａの直径は２４ｍｍ、高さは７．７ｍｍである。
The
（実施例２）
ガスケット材質がポリプロピレン樹脂（ＰＰ）であること以外は電池Ａと同様に作製したものを電池Ｂとした。
(Example 2)
A battery B was prepared in the same manner as the battery A except that the gasket material was polypropylene resin (PP).
（比較例１）
封口板支持体の外径部が内径部よりも０．３ｍｍ短いこと以外は電池Ａと同様に作製したものを電池Ｃとした。
(Comparative Example 1)
A battery C was prepared in the same manner as the battery A except that the outer diameter part of the sealing plate support was 0.3 mm shorter than the inner diameter part.
（比較例２）
図２に示すような逆ハット状の封口板支持体８を具備し、この円周部８ａにＰＰＳを環状に射出成型したガスケットおよび封口板開口部を配置せしめ封口すること以外は電池Ａと同様に作製したものを電池Ｄとした。
(Comparative Example 2)
Similar to the battery A, except that a reverse-hat-shaped
（比較例３）
ガスケット材質がＰＰであること以外は電池Ｄと同様に作製したものを電池Ｅとした。
(Comparative Example 3)
A battery E was prepared in the same manner as the battery D except that the gasket material was PP.
これらの電池の特性評価として、−１０℃１時間／６０℃１時間、つまり１サイクル２時間の熱衝撃試験を行い、目視により漏液の発生数を確認した。表１に熱衝撃試験での耐漏液特性結果を示す。 As a characteristic evaluation of these batteries, a thermal shock test was performed at −10 ° C. for 1 hour / 60 ° C. for 1 hour, that is, 1 cycle for 2 hours, and the number of leaked liquids was confirmed visually. Table 1 shows the results of leakage resistance characteristics in the thermal shock test.
電池Ａ〜電池Ｂについて比較すると、表１から明らかなように、ともに熱衝撃試験５００サイクル後でも漏液は発生しなかった。これはＰＰのような柔らかい樹脂は当然のこと、ＰＰＳのような曲げ弾性率の高い、つまり硬く圧縮されにくいガスケットを用いても、封口時の力を十分に封口板支持体上面部で支えることができ、封口後、熱衝撃試験後もバラツキの無いガスケット圧縮がなされたためである。これに対し、電池Ｃでは熱衝撃試験１００サイクル後に漏液が発生した。これら熱衝撃試験評価後の電池を分解し内部構造を確認すると、電池Ａ〜電池Ｂでは封口後でも封口板支持体上面部、および内径部、外径部に変形は見受けられず、ガスケットが十分に圧縮されていたのに対し、電池Ｃでは封口板支持体の外径部が内径部よりも短いために、封口時の力を十分に支えることができず、結果として外径部が下方へ変形しており、ガスケットが十分に圧縮されていなかった。
When battery A to battery B were compared, as is apparent from Table 1, no leakage occurred even after 500 cycles of the thermal shock test. This is natural for soft resins such as PP, and even when using a gasket with a high bending elastic modulus such as PPS, that is, a hard and hard-to-compress gasket, the sealing surface sufficiently supports the top surface of the sealing plate support. This is because after compression, the gasket was compressed without variation even after the thermal shock test. On the other hand, in the battery C, leakage occurred after 100 cycles of the thermal shock test. When the batteries after the thermal shock test evaluation are disassembled and the internal structure is confirmed, in the batteries A to B, the upper surface of the sealing plate support, the inner diameter part, and the outer diameter part are not deformed even after sealing, and the gasket is sufficient. On the other hand, in the battery C, the outer diameter portion of the sealing plate support is shorter than the inner diameter portion, so that the force at the time of sealing cannot be sufficiently supported. As a result, the outer diameter portion moves downward. The gasket was deformed and the gasket was not fully compressed.
一方、電池Ｄでは熱衝撃試験後に漏液が発生した。同じように電池を分解し内部構造を確認すると、電池Ｄはガスケット材質がＰＰＳであり曲げ弾性率が非常に高くガスケット自体が圧縮されにくいため、また逆ハット状の封口板支持体円周部で封口時の力を支えることができないため、逆ハット状の封口板支持体円周部が下方へ変形し、適切なガスケット圧縮がなされていなかった。これに対し電池Ｅでは電池Ｄと同じ構造であるにもかかわらず熱衝撃試験後の漏液発生数が電池Ｄに比較して少なく、同様に電池を分解し内部構造を確認すると、逆ハット状の封口板支持体円周部の変形度合いは電池Ｄのそれに比較して少なかった。これは電池Ｅのガスケット材質がＰＰであるために曲げ弾性率が電池Ｄのガスケットに比較して低く、封口時の力をガスケットが圧縮されることで吸収し逆ハット状の封口板支持体円周部の変形度合いを電池Ｄより抑制できたためである。 On the other hand, in the battery D, liquid leakage occurred after the thermal shock test. Similarly, when the battery is disassembled and the internal structure is confirmed, since the gasket material is PPS and the bending elastic modulus is very high and the gasket itself is difficult to be compressed, Since the force at the time of sealing cannot be supported, the circumferential portion of the reverse-hat-shaped sealing plate support body is deformed downward, and appropriate gasket compression has not been performed. On the other hand, although the battery E has the same structure as the battery D, the number of leaks after the thermal shock test is smaller than that of the battery D. Similarly, when the battery is disassembled and the internal structure is confirmed, a reverse hat shape is obtained. The degree of deformation of the periphery of the sealing plate support was less than that of the battery D. Since the gasket material of the battery E is PP, the bending elastic modulus is lower than that of the battery D of the battery D, and the sealing force is absorbed by the compression of the gasket and the reverse-hat-shaped sealing plate support circle This is because the degree of deformation of the peripheral portion can be suppressed by the battery D.
本発明のように電池高さの高い（高さ３．０ｍｍ以上）扁平型リチウム電池において、内径部と外径部とを有し、また内径部と外径部の長さが等しく、その断面形状がU字状である扁平型電池用封口板支持体上面部に、ガスケットを配置せしめることにより、封口時にガスケットの底部圧縮量を十分にとることができ且つバラツキの少ないものとすることができ、耐漏液特性に優れた電池を提供することができる A flat lithium battery having a high battery height (height of 3.0 mm or more) as in the present invention has an inner diameter portion and an outer diameter portion, and the inner diameter portion and the outer diameter portion are equal in length, and its cross section By placing the gasket on the upper surface of the flat battery sealing plate support that is U-shaped, the bottom compression amount of the gasket can be taken sufficiently during sealing and the variation can be reduced. Can provide a battery with excellent leakage resistance.
１ 負極封口板
２ 正極ケース
３ ガスケット
４ セパレータ
５ 正極合剤
６ 負極リチウム
７ 封口板支持体
７ａ 封口板支持体上面部
８ 封口板支持体
８ａ 封口板支持体円周部
DESCRIPTION OF
Claims (3)
A flat battery comprising a flat battery sealing plate support according to claim 1, a positive electrode case, a negative electrode sealing plate, a gasket, a separator, a positive electrode, a negative electrode, and an electrolyte. A flat battery in which an inner diameter end and an outer diameter end of the flat sealing plate support are in contact with the inner surface of the positive electrode case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005341740A JP4983007B2 (en) | 2005-11-28 | 2005-11-28 | Flat battery sealing plate support and flat battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005341740A JP4983007B2 (en) | 2005-11-28 | 2005-11-28 | Flat battery sealing plate support and flat battery |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2007149484A true JP2007149484A (en) | 2007-06-14 |
| JP2007149484A5 JP2007149484A5 (en) | 2009-01-22 |
| JP4983007B2 JP4983007B2 (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005341740A Expired - Fee Related JP4983007B2 (en) | 2005-11-28 | 2005-11-28 | Flat battery sealing plate support and flat battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010212207A (en) * | 2009-03-12 | 2010-09-24 | Hitachi Maxell Ltd | Flat battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154561A (en) * | 1985-12-27 | 1987-07-09 | Matsushita Electric Ind Co Ltd | Lithium battery |
| JPH0279366A (en) * | 1988-09-14 | 1990-03-19 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| JPH05114390A (en) * | 1991-10-18 | 1993-05-07 | Toshiba Battery Co Ltd | Manufacture of battery can |
| JP2002151140A (en) * | 2000-11-15 | 2002-05-24 | Seiko Epson Corp | Low voltage battery, electronic instrument and electronically controlled mechanical watch using this battery |
| JP2004127547A (en) * | 2002-09-30 | 2004-04-22 | Sanyo Electric Co Ltd | Heat-resistant lithium battery |
| JP2005259569A (en) * | 2004-03-12 | 2005-09-22 | Matsushita Electric Ind Co Ltd | Flat shaped electrochemical element |
-
2005
- 2005-11-28 JP JP2005341740A patent/JP4983007B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154561A (en) * | 1985-12-27 | 1987-07-09 | Matsushita Electric Ind Co Ltd | Lithium battery |
| JPH0279366A (en) * | 1988-09-14 | 1990-03-19 | Matsushita Electric Ind Co Ltd | Organic electrolyte battery |
| JPH05114390A (en) * | 1991-10-18 | 1993-05-07 | Toshiba Battery Co Ltd | Manufacture of battery can |
| JP2002151140A (en) * | 2000-11-15 | 2002-05-24 | Seiko Epson Corp | Low voltage battery, electronic instrument and electronically controlled mechanical watch using this battery |
| JP2004127547A (en) * | 2002-09-30 | 2004-04-22 | Sanyo Electric Co Ltd | Heat-resistant lithium battery |
| JP2005259569A (en) * | 2004-03-12 | 2005-09-22 | Matsushita Electric Ind Co Ltd | Flat shaped electrochemical element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010212207A (en) * | 2009-03-12 | 2010-09-24 | Hitachi Maxell Ltd | Flat battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4983007B2 (en) | 2012-07-25 |
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