JPH11307063A - Battery - Google Patents
BatteryInfo
- Publication number
- JPH11307063A JPH11307063A JP10104872A JP10487298A JPH11307063A JP H11307063 A JPH11307063 A JP H11307063A JP 10104872 A JP10104872 A JP 10104872A JP 10487298 A JP10487298 A JP 10487298A JP H11307063 A JPH11307063 A JP H11307063A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- electrode terminal
- resin layer
- exterior
- negative electrode
- 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
- Polyesters Or Polycarbonates (AREA)
- Biological Depolymerization Polymers (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電池に係り、さらに
詳しくは外装絶縁樹脂層を有する電池に関する。The present invention relates to a battery, and more particularly, to a battery having an outer insulating resin layer.
【０００２】[0002]
【従来の技術】近年、アルカリマンガン電池、ニッケル
水素二次電池、リチウムイオン電池などの電池は、たと
えばラジオやレコーダー、ビデオカメラなど携帯型電子
機器類の電源として多く使用されている。たとえば二酸
化マンガンを活物質とする正極と、リチウムもしくはリ
チウム合金を活物質とする負極とを有する有機電解質電
池は、高エネルギ−密度を有していることから、各種の
電子機器の電源として実用化されている。2. Description of the Related Art In recent years, batteries such as alkaline manganese batteries, nickel hydride secondary batteries, and lithium ion batteries have been widely used as power sources for portable electronic devices such as radios, recorders, and video cameras. For example, since an organic electrolyte battery having a positive electrode using manganese dioxide as an active material and a negative electrode using lithium or a lithium alloy as an active material has a high energy density, it is practically used as a power source for various electronic devices. Have been.
【０００３】図 は、この種の電池、たとえばアルカリ
マンガン電池の要部構成を示す断面図である。FIG. 1 is a cross-sectional view showing a main part of a battery of this type, for example, an alkaline manganese battery.
【０００４】図１において、１は正極端子を兼ねる有底
筒状のニッケルメッキ鋼製の外装缶、２は前記外装缶１
の側壁内面に対接して内装・配置された円筒状の正極活
物質、３は前記正極活物質２の円筒内配置された不織布
製の円筒状セパレータ、４は前記セパレータ３の円筒内
に配置された負極活物質、５は前記負極活物質４中に一
端側が挿入された真鍮製の負極集電体である。In FIG. 1, reference numeral 1 denotes an outer can made of nickel-plated steel having a bottom and serving as a positive electrode terminal.
The cylindrical positive electrode active material 3 is provided inside and disposed in contact with the inner surface of the side wall of the non-woven fabric. Reference numeral 3 denotes a cylindrical non-woven fabric separator disposed in the cylinder of the positive electrode active material 2, and reference numeral 4 denotes a cylinder disposed in the cylinder of the separator 3. The negative electrode active material 5 is a brass negative electrode current collector having one end inserted into the negative electrode active material 4.
【０００５】ここで、正極活物質２は、二酸化マンガン
および黒鉛を混練して成る組成物であり、また、負極活
物質４は、亜鉛粉末、水酸化カリウムの水溶液およびゲ
ル化剤を混練して成る組成物である。Here, the positive electrode active material 2 is a composition obtained by kneading manganese dioxide and graphite, and the negative electrode active material 4 is obtained by kneading zinc powder, an aqueous solution of potassium hydroxide and a gelling agent. The composition comprises:
【０００６】さらに、６は前記外装缶１の開口端部でカ
シメ封止する負極端子を成す封口体、７は前記負極端子
を成す封口体６および外装缶１の外底面を露出させ、そ
の余の外装缶１外周面を被覆するポリエチレンテレフタ
レート樹脂層である。ここで、絶縁性樹脂層７は、厚さ
80μm のポリエチレンテレフタレート樹脂製フィルム
で、天然ゴム系の接着剤で貼着されている。そして、前
記外装を被覆する絶縁性樹脂層７は、電池の外装保護や
表装に機能する一方、電池同士が隣接した場合の電気的
な絶縁作用も行うもので、ポリ塩化ビニル樹脂、ポリエ
チレンテレフタレート樹脂、ポリエチレン樹脂などで形
成されている。Further, reference numeral 6 denotes a sealing member forming a negative electrode terminal for caulking and sealing at the opening end of the outer can 1, and 7 denotes a sealing member 6 forming the negative electrode terminal and an outer bottom surface of the outer can 1. Is a polyethylene terephthalate resin layer covering the outer peripheral surface of the outer can 1. Here, the insulating resin layer 7 has a thickness
It is a film made of polyethylene terephthalate resin with a thickness of 80 μm, and is adhered with a natural rubber adhesive. The insulating resin layer 7 covering the exterior functions to protect the exterior of the battery and to cover the exterior of the battery, and also performs an electrical insulating action when the batteries are adjacent to each other. , Made of polyethylene resin or the like.
【０００７】なお、封口体６は、負極集電体５の他端側
に電気的に接続しており、また、外装缶１の開口端部に
対して封口体６は、負極集電体５の挿通支持、封口体６
の支持体７を支持する一方、絶縁性のガスケット８を介
挿し、絶縁・気密に封着されている。[0007] The sealing body 6 is electrically connected to the other end of the negative electrode current collector 5, and the sealing body 6 is connected to the opening end of the outer can 1 with the negative electrode current collector 5. Insertion support, sealing body 6
While supporting the supporting member 7, an insulating gasket 8 is interposed therebetween so as to be insulated and airtightly sealed.
【０００８】[0008]
【発明が解決しようとする課題】前記ポリ塩化ビニル樹
脂、ポリエチレンテレフタレート樹脂あるいはポリエチ
レン樹脂は、機械的な強度、電気絶縁性、熱的安定性な
どがすぐれているので、電池の外装保護や表装に適する
が、電池を廃棄処分する場合において問題がある。すな
わち、近年、環境問題や資源問題のクローズアップで、
廃プラスチックス類は、産業廃棄物の安定５品目の一つ
として安定型で処分されている。そして、この産業廃棄
物の処分に絡み、プラスチックス類を部材として含む電
池の廃棄においても適用される。The above-mentioned polyvinyl chloride resin, polyethylene terephthalate resin or polyethylene resin is excellent in mechanical strength, electric insulation, thermal stability, etc., and is therefore suitable for protecting the exterior of a battery or mounting it on a surface. Suitable, but problematic when disposing of batteries. In other words, in recent years, in the close-up of environmental issues and resource issues,
Waste plastics are disposed of in a stable form as one of the five stable items of industrial waste. In connection with the disposal of the industrial waste, the invention is also applied to the disposal of a battery containing plastics as a member.
【０００９】つまり、外装被覆樹脂層を有する電池な
ど、電池部材を成す樹脂類については、環境問題などに
対応できる特性として環境に優しいことが要望される。
しかし、上記ポリ塩化ビニル樹脂、ポリエチレンテレフ
タレート樹脂、ポリエチレン樹脂などは、前記要求ない
し要望を満足し得るものでなく環境問題などから、より
有効な対策の確立が待たれている状況にある。That is, it is required that the resins constituting the battery member, such as a battery having an outer covering resin layer, be environmentally friendly as a property that can respond to environmental problems.
However, the polyvinyl chloride resin, polyethylene terephthalate resin, polyethylene resin, and the like do not satisfy the requirements or demands described above, and there is a need to establish more effective countermeasures due to environmental problems and the like.
【００１０】本発明は、上記事情に対処してなされたも
ので、所要の外装保護作用などが十分になされ一方、電
池の廃棄処理に当たっての問題を十分に低減てきる外装
樹脂層を備えた電池の提供を目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a battery provided with an exterior resin layer that sufficiently reduces required problems in disposal of a battery while providing sufficient exterior protection and the like. The purpose is to provide.
【００１１】[0011]
【課題を解決するための手段】請求項１の発明は、互い
に電気的に絶縁して正極端子および負極端子を外部に導
出・露出させた外装体と、前記外装体内に内装され、か
つ正極端子および負極端子に電気的に接続された電池要
素部と、前記正極端子および負極端子の露出面を除く外
装体面を被覆する絶縁性樹脂層とを有する電池であっ
て、前記絶縁性樹脂層が生分解性ポリマーで形成されて
いることを特徴とする電池である。According to the first aspect of the present invention, there is provided an exterior body in which a positive electrode terminal and a negative electrode terminal are electrically insulated from each other and led out and exposed to the outside; And a battery element portion electrically connected to the negative electrode terminal, and an insulating resin layer covering the exterior body surface excluding the exposed surfaces of the positive electrode terminal and the negative electrode terminal, wherein the insulating resin layer is formed. A battery formed of a degradable polymer.
【００１２】請求項２の発明は、請求項１記載の電池に
おいて、生分解性ポリマーがポリ乳酸であることを特徴
とする。According to a second aspect of the present invention, in the battery according to the first aspect, the biodegradable polymer is polylactic acid.
【００１３】請求項３の発明は、請求項２記載の電池に
おいて、ポリ乳酸は直接重合法で合成された高分子ポリ
マーであることを特徴とする。According to a third aspect of the present invention, in the battery according to the second aspect, the polylactic acid is a high-molecular polymer synthesized by a direct polymerization method.
【００１４】すなわち、請求項１〜３の発明は、たとえ
ばアルカリマンガン電池、ニッケル水素二次電池、リチ
ウムイオン電池など、各種の円筒ないし円柱型電池、角
筒ないし角柱型電池、もしくはパック電池などにおい
て、外部接続用端子の露出（導出）部を除く主要な外装
面を絶縁性樹脂層（フィルム）で被覆した構成で、外装
面を被覆する絶縁性樹脂として、生分解性ポリマーを使
用したことを骨子とする。 ここで、生分解性ポリマー
は、たとえばポリ乳酸、ポリヒドロキシ酸とポリヒドロ
キシ吉草酸をベスとしたポリマーであり、たとえば“ L
ACEA”の商品名（三井東圧化学社製）で市販されてい
る。また、前記ポリ乳酸は、すぐれた透明性、安全性や
安定性を呈する一方、たとえばコンポストによる堆肥化
（コンポスト中で分解する）、低温燃焼型（燃焼熱：約
4000Kcal/Kg、紙と同程度）で焼却できるなど、廃棄処
理が容易であるという特長もある。That is, the invention according to claims 1 to 3 is applicable to various cylindrical or cylindrical batteries, prismatic or prismatic batteries, pack batteries or the like, for example, alkaline manganese batteries, nickel-metal hydride secondary batteries, lithium ion batteries and the like. The main exterior surface except the exposed (lead-out) part of the external connection terminal is covered with an insulating resin layer (film), and a biodegradable polymer is used as the insulating resin covering the exterior surface. It is the main point. Here, the biodegradable polymer is, for example, a polymer based on polylactic acid, polyhydroxy acid and polyhydroxyvaleric acid.
ACEA ”is commercially available under the trade name of Mitsui Toatsu Chemicals Co., Ltd. The polylactic acid exhibits excellent transparency, safety and stability, while being composted by compost (decomposition in compost). ), Low temperature combustion type (combustion heat: about
It has the advantage of easy disposal, such as incineration at 4000 Kcal / Kg, about the same as paper.
【００１５】表１に、ポリ乳酸の物理的特性をポリエチ
レンテレフタレート樹脂、ポリプロピレン樹脂、ポリエ
チレン樹脂の場合と比較して示す。なお、試料として
は、ASTM試験片，ノッチ付きで、測定した結果である。Table 1 shows the physical properties of polylactic acid in comparison with those of polyethylene terephthalate resin, polypropylene resin and polyethylene resin. In addition, as a sample, it is an ASTM test piece and it is the result of having measured with a notch.
【００１６】[0016]
【表１】 一方、ポリ乳酸は、たとえばコーンやポテトなどの澱粉
を分解して得たグルコースを発酵させるか、あるいはビ
ートや砂糖キビなどの糖分から得たシュクロースなどを
発酵させて得た乳酸を重合させることによって得られ
る。ここで、乳酸の重合は、実用的な強度を有する高分
子ポリマーが得易いことから、乳酸を直接脱水縮合する
方法が好ましい。直接重合以外の方法では、重合の進行
で高粘土化する反応液から、生成した水を除去するのが
困難であり、また、高温では生成ポリマーがラクタイド
を生成しながら分解するため、実用的な強度を有する高
分子ポリマーが得難くなる。[Table 1] On the other hand, polylactic acid is obtained by fermenting glucose obtained by decomposing starch such as corn or potato, or polymerizing lactic acid obtained by fermenting sucrose obtained from sugars such as beet and sugar cane. Obtained by Here, in the polymerization of lactic acid, a method of directly dehydrating and condensing lactic acid is preferable because a high-molecular polymer having practical strength is easily obtained. With methods other than direct polymerization, it is difficult to remove the generated water from the reaction solution that becomes highly clay due to the progress of polymerization.In addition, at high temperatures, the generated polymer decomposes while generating lactide, which is not practical. It becomes difficult to obtain a high-molecular polymer having strength.
【００１７】[0017]
【発明の実施の形態】以下図１〜図を参照して実施例を
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.
【００１８】図１は実施例に係る筒型のアルカリマンガ
ン電池の要部構成を示す断面図である。FIG. 1 is a cross-sectional view showing a main part of a cylindrical alkaline manganese battery according to an embodiment.
【００１９】図１において、１は正極端子1aを兼ねる有
底筒状のニッケルメッキ鋼製の外装缶、２は前記外装缶
１の側壁内面に対接して内装・配置された円筒状に形成
されたの正極活物質、３は前記正極活物質２の円筒内配
置された不織布製の円筒状セパレータ、４は前記セパレ
ータ３の円筒内に配置された負極活物質、５は前記負極
活物質４中に一端側が挿入された真鍮製の負極集電体で
ある。In FIG. 1, reference numeral 1 denotes an outer can made of nickel-plated steel having a bottom and serving as a positive electrode terminal 1a, and 2 is formed in a cylindrical shape inside and disposed in contact with the inner surface of the side wall of the outer can 1. In addition, the positive electrode active material 3, 3 is a non-woven fabric cylindrical separator disposed in the cylinder of the positive electrode active material 2, 4 is the negative electrode active material disposed in the cylinder of the separator 3, 5 is the negative electrode active material 4. Is a brass-made negative electrode current collector with one end inserted therein.
【００２０】ここで、正極活物質２は、二酸化マンガン
および黒鉛を混練して成る組成物であり、また、負極活
物質４は、亜鉛粉末、水酸化カリウムの水溶液およびゲ
ル化剤を混練して成る組成物である。Here, the positive electrode active material 2 is a composition obtained by kneading manganese dioxide and graphite, and the negative electrode active material 4 is obtained by kneading zinc powder, an aqueous solution of potassium hydroxide and a gelling agent. The composition comprises:
【００２１】さらに、６は前記外装缶１の開口端部でカ
シメ封止する負極端子6aを成す封口体、７は前記負極端
子6aを成す封口体６および外装缶１の外底面を露出さ
せ、その余の外装缶１外周面を被覆する生分解性ポリマ
ー層である。ここで、生分解性ポリマー層７は、厚さ80
μm のポリ乳酸製フィルムで、天然ゴム系の接着剤で貼
着されている。Further, reference numeral 6 denotes a sealing member forming a negative electrode terminal 6a for caulking and sealing at the opening end of the outer can 1, and 7 denotes a sealing member 6 forming the negative electrode terminal 6a and an outer bottom surface of the outer can 1. It is a biodegradable polymer layer covering the outer peripheral surface of the remaining outer can 1. Here, the biodegradable polymer layer 7 has a thickness of 80
It is a film made of polylactic acid with a thickness of μm and is attached with a natural rubber adhesive.
【００２２】なお、封口体６は、負極集電体５の他端側
に電気的に接続しており、外装缶１の開口端部に対し
て、たとえばポリアミド系樹脂などから成る絶縁性のガ
スケット８を介挿し、絶縁・気密に封止・装着されてい
る。また、この封口体６は、負極集電体５の挿通支持、
封口体６の支持体９を支持している。The sealing body 6 is electrically connected to the other end of the negative electrode current collector 5, and has an insulating gasket made of, for example, a polyamide resin or the like with respect to the open end of the outer can 1. 8 and is sealed and mounted insulated and airtight. Further, the sealing body 6 supports insertion of the negative electrode current collector 5,
The support 9 of the sealing body 6 is supported.
【００２３】一方、上記アルカリマンガン電池の構成に
おいて、ポリ乳酸製フィルム７で外装缶１の外周面を被
覆する代りに、ポリエチレンテレフタレート樹脂フィル
ムで被覆したアルカリマンガン電池（比較例）を作製す
る。On the other hand, instead of covering the outer peripheral surface of the outer can 1 with the polylactic acid film 7 in the above configuration of the alkaline manganese battery, an alkaline manganese battery (comparative example) covered with a polyethylene terephthalate resin film is produced.
【００２４】上記実施例および比較例に係る構成のアル
カリマンガン電池各50個について、外装被覆樹脂層の強
度を引っ掻き試験により比較した。すなわち、図２に、
その実施態様を模式的に示すように、基台10に植設した
支持体11に一端が回動的に支持された梁12の他端側に、
先端部が0.2Rに加工された鉄製ピン13を装着した引っ掻
き試験機を用意し、前記鉄製ピン13の先端部をアルカリ
マンガン電池14の外装被覆樹脂層７面に当接させ、鉄製
ピン13に印加する荷重15を変えて引っ掻き試験を行っ
た。この引っ掻きによる外装被覆樹脂層の破損発生を調
べた結果、表２に示すように、ポリ乳酸製フィルムとポ
リエチレンテレフタレート樹脂フィルムとは、強度にほ
とんど差がなかった。The strength of the exterior coating resin layer was compared by a scratch test with respect to each of the 50 alkaline manganese batteries having the configurations according to the above Examples and Comparative Examples. That is, in FIG.
As schematically shown in the embodiment, on the other end side of the beam 12 one end of which is rotatably supported by the support 11 implanted in the base 10,
A scratch tester equipped with an iron pin 13 having a tip processed to 0.2R was prepared, and the tip of the iron pin 13 was brought into contact with the exterior coating resin layer 7 of the alkaline manganese battery 14 to attach the iron pin 13. A scratch test was performed while changing the applied load 15. As a result of examining the occurrence of breakage of the exterior coating resin layer due to the scratching, as shown in Table 2, there was almost no difference in strength between the polylactic acid film and the polyethylene terephthalate resin film.
【００２５】[0025]
【表２】 また、外装被覆樹脂層の経年劣化を評価するため、室温
60℃．湿度93％下、60日間貯蔵後、上記と同様に、引っ
掻きによる外装被覆樹脂層の破損発生を調べた結果、表
３に示すように、ポリ乳酸製フィルムとポリエチレンテ
レフタレート樹脂フィルムとは、強度にほとんど差がな
かった。[Table 2] In order to evaluate the aging of the exterior coating resin layer,
60 ° C. After storage for 60 days at a humidity of 93%, the occurrence of damage to the exterior coating resin layer due to scratching was examined in the same manner as described above. As shown in Table 3, the polylactic acid film and the polyethylene terephthalate resin film showed strong strength. There was little difference.
【００２６】[0026]
【表３】 さらに、上記構成の電池について、製造直後および室温
60℃，相対湿度93％下、60日間貯蔵後、図３に実施態様
を模式的に示すように、正極端子1aと外装被覆樹脂層７
との間に直流500Vを印加して、室温20℃，相対湿度60％
下で、それぞれ絶縁抵抗を測定したところ、表４に示す
ように、ポリ乳酸製フィルムとポリエチレンテレフタレ
ート樹脂フィルムとは、絶縁性にほとんど差がなかっ
た。[Table 3] Furthermore, for the battery of the above configuration, immediately after the production and at room temperature
After storage at 60 ° C. and a relative humidity of 93% for 60 days, as schematically shown in FIG. 3, the positive electrode terminal 1a and the outer coating resin layer 7
DC 500V is applied between it and room temperature 20 ℃, relative humidity 60%
When the insulation resistance was measured below, as shown in Table 4, there was almost no difference in insulation between the polylactic acid film and the polyethylene terephthalate resin film.
【００２７】[0027]
【表４】 上記実施例および比較例との対比から分かるように、本
発明に係る電池は、外装被覆樹脂層の保護機能、絶縁機
能など、従来の電池の場合とほとんど同等であり、実用
上十分な保護・絶縁機能性が得られる。一方、電池の使
用後に破棄処理した場合は、外装被覆樹脂層が生分解で
消滅されるので、従来のポリエチレンテレフタレート樹
脂フィルムなどの場合と異なって、環境問題に対して非
常に有利な結果を呈する。[Table 4] As can be seen from the comparison with the above Examples and Comparative Examples, the battery according to the present invention is almost the same as the conventional battery, such as the protective function of the outer covering resin layer and the insulating function, and has sufficient protection and practicality. Insulation functionality is obtained. On the other hand, when the battery is discarded after use, since the exterior coating resin layer is disappeared by biodegradation, unlike the case of the conventional polyethylene terephthalate resin film or the like, a very advantageous result against environmental problems is exhibited. .
【００２８】なお、本発明は、上記実施例に限定される
ものでなく、発明の趣旨を逸脱しない範囲で、いろいろ
の変形を採ることができる。たとえば、マンガンアルカ
リ電池の代りに、ニッケル水素二次電池やリチウムイオ
ン電池、あるいは円筒型の代りに角筒型などであっても
よい。The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. For example, a nickel-metal hydride secondary battery or a lithium ion battery may be used instead of the manganese alkaline battery, or a prismatic type may be used instead of the cylindrical type.
【００２９】[0029]
【発明の効果】請求項１〜３の発明によれば、電池の外
装被覆樹脂層が、生分解で消滅される生分解性ポリマー
で形成されているため、電池廃棄処理後における環境問
題などの改善が容易に図られる。特に、ポリ乳酸系の生
分解性ポリマー層の場合は、経年特性、絶縁性、機械的
な強度なども良好で、環境にやさしい電池の提供が可能
となる。According to the first to third aspects of the present invention, since the outer coating resin layer of the battery is formed of a biodegradable polymer that is eliminated by biodegradation, it is possible to reduce environmental problems after the disposal of the battery. Improvement is easily achieved. In particular, in the case of a polylactic acid-based biodegradable polymer layer, aging characteristics, insulation properties, mechanical strength, and the like are good, and an environmentally friendly battery can be provided.
【図１】実施例に係る電池の要部構成を示す縦断面図。FIG. 1 is a longitudinal sectional view showing a configuration of a main part of a battery according to an embodiment.
【図２】電池の外装被覆樹脂層の引っ掻き試験の実施態
様を示す模式図。FIG. 2 is a schematic view showing an embodiment of a scratch test of a battery exterior coating resin layer.
【図３】電池の外装被覆樹脂層の絶縁性試験の実施態様
を示す模式図。FIG. 3 is a schematic view showing an embodiment of an insulation test of an outer covering resin layer of a battery.
１……外装缶 1a……正極端子 ２……正極活物質 ３……セパレーター ４……負極活物質 ５……負極集電体 ６……封口体 6a……負極端子 ７……生分解性ポリマー層（外装被覆絶縁樹脂層） ８……絶縁性ガスケット ９……支持体 DESCRIPTION OF SYMBOLS 1 ... Outer can 1a ... Positive electrode terminal 2 ... Positive electrode active material 3 ... Separator 4 ... Negative electrode active material 5 ... Negative electrode current collector 6 ... Sealing body 6a ... Negative electrode terminal 7 ... Biodegradable polymer Layer (exterior coating insulating resin layer) 8 ... insulating gasket 9 ... support
Claims (3)
負極端子を外部に導出・露出させた外装体と、 前記外装体内に内装され、かつ正極端子および負極端子
に電気的に接続された電池要素部と、 前記正極端子および負極端子の露出面を除く外装体面を
被覆する絶縁性樹脂層とを有する電池であって、 前記絶縁性樹脂層が生分解性ポリマーで形成されている
ことを特徴とする電池。1. An exterior body which is electrically insulated from each other to expose and expose a positive terminal and a negative terminal to the outside, and a battery housed inside the exterior body and electrically connected to the positive terminal and the negative terminal. A battery comprising: an element portion; and an insulating resin layer covering an exterior body surface excluding an exposed surface of the positive electrode terminal and the negative electrode terminal, wherein the insulating resin layer is formed of a biodegradable polymer. And batteries.
を特徴とする請求項１記載の電池。2. The battery according to claim 1, wherein the biodegradable polymer is polylactic acid.
子ポリマーであることを特徴とする請求項２記載の電
池。3. The battery according to claim 2, wherein the polylactic acid is a polymer synthesized by a direct polymerization method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10487298A JP4036959B2 (en) | 1998-04-15 | 1998-04-15 | battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10487298A JP4036959B2 (en) | 1998-04-15 | 1998-04-15 | battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11307063A true JPH11307063A (en) | 1999-11-05 |
| JP4036959B2 JP4036959B2 (en) | 2008-01-23 |
Family
ID=14392320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10487298A Expired - Fee Related JP4036959B2 (en) | 1998-04-15 | 1998-04-15 | battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4036959B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005251512A (en) * | 2004-03-03 | 2005-09-15 | Sanyo Electric Co Ltd | Nickel-hydrogen storage battery |
| US7297431B2 (en) | 2002-03-20 | 2007-11-20 | Toyota Jidosha Kabushiki Kaisha | Vehicle power supply unit |
| JP2010115077A (en) * | 2008-11-10 | 2010-05-20 | Sony Corp | Electric power generating apparatus |
-
1998
- 1998-04-15 JP JP10487298A patent/JP4036959B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7297431B2 (en) | 2002-03-20 | 2007-11-20 | Toyota Jidosha Kabushiki Kaisha | Vehicle power supply unit |
| JP2005251512A (en) * | 2004-03-03 | 2005-09-15 | Sanyo Electric Co Ltd | Nickel-hydrogen storage battery |
| JP2010115077A (en) * | 2008-11-10 | 2010-05-20 | Sony Corp | Electric power generating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4036959B2 (en) | 2008-01-23 |
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