JPH0567456A - Sealed-type secondary battery and its manufacture - Google Patents
Sealed-type secondary battery and its manufactureInfo
- Publication number
- JPH0567456A JPH0567456A JP3227941A JP22794191A JPH0567456A JP H0567456 A JPH0567456 A JP H0567456A JP 3227941 A JP3227941 A JP 3227941A JP 22794191 A JP22794191 A JP 22794191A JP H0567456 A JPH0567456 A JP H0567456A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- sealed
- secondary battery
- dip
- electrode plate
- 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
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
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、薄形の電槽をもつ密閉
型二次電池及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed secondary battery having a thin battery case and a method for manufacturing the sealed secondary battery.
【０００２】[0002]
【従来の技術】ポータブル機器等の薄形化に伴い、これ
らの電源として用いられる密閉型鉛蓄電池の如き密閉型
二次電池も薄形化されつつある。特に、薄形化に対して
効果があるのは、電槽の薄形化であり、従来のＡＢＳ樹
脂等の射出成形電槽に代わって、特開昭61-206158 号公
報に提案されているように、シート状若しくはフィルム
状のラミネート構造の合成樹脂電槽が用いられている。2. Description of the Related Art As portable devices and the like have become thinner, sealed secondary batteries such as sealed lead-acid batteries used as power sources for these have also been thinned. In particular, what is effective in reducing the thickness is to reduce the thickness of the battery case, which is proposed in JP-A-61-206158 in place of the conventional injection molded battery case made of ABS resin or the like. As described above, a synthetic resin battery case having a sheet-shaped or film-shaped laminated structure is used.
【０００３】この薄形の電槽の技術は、食品包装等に用
いられてきた技術である。この合成樹脂電槽の中間層に
ポリ塩化ビニリデン等のガスバリア−性フィルムを配置
することにより、従来のＡＢＳ樹脂電槽に比べて、耐水
蒸気透過性，耐酸素透過性の面で、約１／２０程度の厚
みにすることができ、非常に効果がある。The technology of this thin battery case has been used for food packaging and the like. By arranging a gas barrier film such as polyvinylidene chloride in the intermediate layer of this synthetic resin battery case, compared with the conventional ABS resin battery case, in terms of water vapor permeation resistance and oxygen permeation resistance, about 1 / The thickness can be about 20, which is very effective.
【０００４】図２は、従来のこの種の密閉型二次電池の
例を示したものである。この密閉型二次電池は、陽極板
１，陰極板２，セパレータ３が積層されて構成された極
板群４を有し、該極板群４がシート状若しくはフィルム
状のラミネート構造の合成樹脂電槽５で気密に被覆され
た構造になっている。該シート状若しくはフィルム状の
ラミネート構造の合成樹脂電槽５は、内側から外側に向
かってポリプロピレン層６，ポリ塩化ビニリデン層７，
ポリエチレンテレフタレート層８が積層された層構造に
なっていて、極板群４を包むように被覆され、相互の重
ね合わせ部分が封止された構造になっている。FIG. 2 shows an example of a conventional sealed type secondary battery of this type. This sealed secondary battery has an electrode plate group 4 configured by laminating an anode plate 1, a cathode plate 2 and a separator 3, and the electrode plate group 4 is a synthetic resin having a laminated structure of a sheet shape or a film shape. The battery case 5 is hermetically covered. The sheet-like or film-like laminated synthetic resin battery case 5 comprises a polypropylene layer 6, a polyvinylidene chloride layer 7,
It has a layered structure in which polyethylene terephthalate layers 8 are laminated, and is covered so as to wrap the electrode plate group 4 and has a structure in which overlapping portions are sealed.
【０００５】このような種々のシート状若しくはフィル
ム状合成樹脂を積層したラミネート構造の合成樹脂電槽
５とすることにより、薄くて耐水蒸気透過性に優れた電
槽を得ることができる。By using the synthetic resin battery case 5 having a laminated structure in which various sheet-like or film-like synthetic resins are laminated, it is possible to obtain a thin battery container excellent in water vapor permeation resistance.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の密閉型二次電池では、薄形合成樹脂電槽５が
ラミネート構造であるため、高温多湿雰囲気中等で電池
が長期間使用された場合、ラミネートフィルムの積層断
面が剥離してしまう問題点があった。ラミネートフィル
ムの積層断面が剥離すると、電池の内部に酸素が侵入
し、電池の容量低下をまねくことになる。However, in such a conventional sealed type secondary battery, when the thin synthetic resin battery case 5 has a laminated structure, the battery is used for a long time in a hot and humid atmosphere. However, there is a problem that the laminated cross section of the laminated film is peeled off. When the laminated cross section of the laminated film is peeled off, oxygen penetrates into the inside of the battery, leading to a decrease in the capacity of the battery.
【０００７】本発明の目的は、薄形合成樹脂電槽の気密
破れを防止することができる密閉型二次電池及びその製
造方法を提供することにある。An object of the present invention is to provide a sealed secondary battery capable of preventing the airtightness of a thin synthetic resin battery case and a method for manufacturing the sealed secondary battery.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成する本
発明の手段を説明すると、次の通りである。The means of the present invention for achieving the above object will be described below.
【０００９】請求項１に記載の密閉型二次電池は、極板
群が合成樹脂のディップ成形電槽で被覆されていること
を特徴とする。The sealed secondary battery according to claim 1 is characterized in that the electrode plate group is covered with a dip-molded battery case made of synthetic resin.
【００１０】請求項２に記載の密閉型二次電池は、極板
群が中間シール層で覆われ、前記中間シール層の外周が
ディップ成形電槽で被覆されていることを特徴とする。The sealed secondary battery according to claim 2 is characterized in that the electrode plate group is covered with an intermediate seal layer, and the outer periphery of the intermediate seal layer is covered with a dip-molded battery case.
【００１１】請求項３に記載の密閉型二次電池は、請求
項２において、前記中間シール層がシート状若しくはフ
ィルム状の熱収縮性合成樹脂で形成されていることを特
徴とする。A sealed secondary battery according to a third aspect of the present invention is characterized in that, in the second aspect, the intermediate seal layer is formed of a sheet-shaped or film-shaped heat-shrinkable synthetic resin.
【００１２】請求項４に記載の密閉型二次電池は、請求
項３において、前記シート状若しくはフィルム状の熱収
縮性合成樹脂被覆体の開口部が粉末状合成樹脂の焼結・
融合・成形部で封口されていることを特徴とする。According to a fourth aspect of the present invention, in the hermetically sealed secondary battery according to the third aspect, the opening of the sheet-shaped or film-shaped heat-shrinkable synthetic resin coating is formed by sintering powdery synthetic resin.
It is characterized by being sealed at the fusion / molding part.
【００１３】請求項５に記載の密閉型二次電池の製造方
法は、極板群を中間シール層で覆い、前記中間シール層
付き極板群を合成樹脂のゾル又はエマルジョンに浸漬し
て引き上げて硬化させることによりディップ成形電槽を
形成することを特徴とする。According to a fifth aspect of the present invention, in the method for manufacturing a sealed secondary battery, the electrode plate group is covered with an intermediate seal layer, and the electrode plate group with the intermediate seal layer is immersed in a synthetic resin sol or emulsion and pulled up. It is characterized in that a dip-molded battery case is formed by curing.
【００１４】[0014]
【作用】請求項１のように、電槽をディップ成形電槽で
形成すると、該ディップ成形電槽は継ぎ目がないので、
使用中にその継ぎ目が剥がれる事故の発生が皆無にな
る。When the battery case is formed by the dip-molding battery case as in claim 1, since the dip-molding battery container is seamless,
There will be no accident of peeling the seam during use.
【００１５】請求項２のように、極板群を中間シール層
で覆い、該中間シール層の外周をディップ成形電槽で覆
うと、該ディップ成形電槽の形成時に成形用の樹脂が極
板群中に侵入するのを阻止することができる。When the electrode plate group is covered with the intermediate seal layer and the outer periphery of the intermediate seal layer is covered with the dip-molding battery case, the resin for molding is applied to the electrode plate when the dip-molding battery container is formed. It is possible to prevent entry into the flock.
【００１６】請求項３のように、中間シール層をシート
状若しくはフィルム状の熱収縮性合成樹脂被覆体で形成
すると、該熱収縮性合成樹脂被覆体がシール作用の他
に、極板群の積層間を密着させるように加圧する作用も
もつようになる。When the intermediate seal layer is formed of a sheet-shaped or film-shaped heat-shrinkable synthetic resin coating as in claim 3, the heat-shrinkable synthetic resin coating has a sealing function and also an electrode plate group. It also has a function of pressurizing so that the layers are closely contacted.
【００１７】請求項４のように、シート状若しくはフィ
ルム状の熱収縮性合成樹脂被覆体の開口部を粉末状合成
樹脂の焼結・融合・成形部で封口すると、該熱収縮性合
成樹脂被覆体の封口部が剥離しないように容易に封口す
ることができる。When the opening of the sheet-shaped or film-shaped heat-shrinkable synthetic resin coating is sealed by the powdery synthetic resin sintering / fusion / molding section, the heat-shrinkable synthetic resin coating is formed. The body can be easily sealed so as not to peel off.
【００１８】請求項５のように、極板群を中間シール層
で覆ってから、該中間シール層付き極板群を合成樹脂の
ゾル又はエマルジョンに浸漬すると、浸漬時に該合成樹
脂のゾル又はエマルジョンが極板群中に侵入するのを阻
止することができる。When the electrode plate group is covered with the intermediate seal layer and then the electrode plate group with the intermediate seal layer is dipped in a sol or emulsion of a synthetic resin, the sol or emulsion of the synthetic resin is dipped during the immersion. Can be prevented from penetrating into the electrode group.
【００１９】[0019]
【実施例】図１は、本発明に係る密閉型二次電池の一実
施例を示したものである。なお、前述した図２と対応す
る部分には、同一符号を付けて示している。EXAMPLE FIG. 1 shows an example of a sealed secondary battery according to the present invention. The parts corresponding to those in FIG. 2 described above are denoted by the same reference numerals.
【００２０】以下、本実施例の密閉型二次電池の構造を
その製造方法と共に説明する。まず、極板群４をシート
状若しくはフィルム状の熱収縮性合成樹脂被覆体９とし
ての筒状のポリ塩化ビニルフィルム（15μｍ）で被覆す
る。この筒状のポリ塩化ビニルフィルムの両端の開口部
を、粉末状合成樹脂としてのポリプロピレン樹脂粉末
（40メッシュ、ＭＩ：４）を220 ℃で焼結，融合し成形
した焼結・融合・成形部１０で封口する。The structure of the sealed secondary battery of this embodiment will be described below together with its manufacturing method. First, the electrode plate group 4 is covered with a tubular polyvinyl chloride film (15 μm) serving as a sheet-shaped or film-shaped heat-shrinkable synthetic resin coating 9. Sintering / fusing / molding part where polypropylene resin powder (40 mesh, MI: 4) as a powdery synthetic resin was sintered and fused at 220 ° C. in the openings at both ends of this cylindrical polyvinyl chloride film. Seal at 10.
【００２１】このように熱収縮性合成樹脂被覆体９と焼
結・融合・成形部１０でシールした極板群４をポリプロ
ピレンゾル（粘土：1500cp、降伏値：55dyn/cm2 ）中に
浸漬し、引上げ速度0.95cm/secで引上げ、140 ℃で溶融
ゲル化し、冷却硬化させ厚さ100 μｍのディップ成形ポ
リプロピレン層６ａを形成する。このとき極板群４の外
周を熱収縮性合成樹脂被覆体９と焼結・融合・成形部１
０とでシールしているので、極板群４内にポリプロピレ
ンゾルが侵入して電池性能を疎外するのを防止すること
ができる。The electrode plate group 4 thus sealed with the heat-shrinkable synthetic resin coating 9 and the sintering / fusion / molding section 10 is dipped in polypropylene sol (clay: 1500 cp, yield value: 55 dyn / cm 2 ). Then, it is pulled up at a pulling rate of 0.95 cm / sec, melted and gelled at 140 ° C., cooled and hardened to form a dip-molded polypropylene layer 6a having a thickness of 100 μm. At this time, the outer periphery of the electrode plate group 4 and the heat-shrinkable synthetic resin coating 9 are sintered / fused / formed 1
Since it is sealed with 0, it is possible to prevent polypropylene sol from entering the electrode plate group 4 and alienating the battery performance.
【００２２】次に、ディップ成形ポリプロピレン層６ａ
の硬化後、熱収縮性合成樹脂被覆体９と該ディップ成形
ポリプロピレン層６ａを被覆した極板群４をポリ塩化ビ
ニリデン（粘土：1000cp、降伏値：50dyn/cm2）中に浸
漬し、引上げ速度0.95cm/secで引上げ、160 ℃で溶融ゲ
ル化し、冷却硬化させ厚さ150 μｍのディップ成形ポリ
塩化ビニリデン層７ａを形成する。Next, the dip-molded polypropylene layer 6a
After curing, the heat-shrinkable synthetic resin coating 9 and the electrode plate group 4 coated with the dip-molded polypropylene layer 6a were dipped in polyvinylidene chloride (clay: 1000 cp, yield value: 50 dyn / cm 2 ) and the pulling speed was increased. It is pulled up at 0.95 cm / sec, melted and gelled at 160 ° C., cooled and hardened to form a dip-molded polyvinylidene chloride layer 7a having a thickness of 150 μm.
【００２３】次に、ディップ成形ポリ塩化ビニリデン層
７ａの硬化後、熱収縮性合成樹脂被覆体９とディップ成
形ポリプロピレン層６ａと該ディップ成形ポリ塩化ビニ
リデン層７ａを被覆した極板群４をポリエチレンテレフ
タレート（粘土：1000cp、降伏値：50dyn/cm2 ）中に浸
漬し、引上げ速度0.95cm/secで引上げ、170 ℃で溶融ゲ
ル化し、冷却硬化させ厚さ150 μｍのディップ成形ポリ
エチレンテレフタレート層８ａを形成した。Next, after the dip-molded polyvinylidene chloride layer 7a is cured, the heat-shrinkable synthetic resin coating 9, the dip-molded polypropylene layer 6a, and the electrode plate group 4 coated with the dip-molded polyvinylidene chloride layer 7a are polyethylene terephthalate. (Clay: 1000 cp, Yield value: 50 dyn / cm 2 ) Dip-molded polyethylene terephthalate layer 8 a with a thickness of 150 μm is obtained by pulling at a pulling rate of 0.95 cm / sec, melting at 170 ° C., gelling. did.
【００２４】このようにして、ディップ成形ポリプロピ
レン層６ａとディップ成形ポリ塩化ビニリデン層７ａと
ディップ成形ポリエチレンテレフタレート層８ａとから
なるディップ成形電槽５ａを形成し、２Ｖ−２Ａｈの密
閉型二次電池を作製した。In this way, a dip-molded battery case 5a consisting of the dip-molded polypropylene layer 6a, the dip-molded polyvinylidene chloride layer 7a and the dip-molded polyethylene terephthalate layer 8a is formed, and a sealed secondary battery of 2V-2Ah is formed. It was made.
【００２５】次に、このような本発明の密閉型二次電池
（本発明品と称する）と従来品との性能の比較を行っ
た。従来品は、外表面よりポリエチレンテレフタレート
層（25μｍ），ポリ塩化ビニリデン層（15μｍ），未延
伸ポリプロピレン層（60μｍ）を積層したラミネートフ
ィルムで極板群を被覆し、合わせ目をシールして電槽と
した２Ｖ−２Ａｈの密閉型二次電池である。Next, the performance of the sealed secondary battery of the present invention (referred to as the product of the present invention) and the conventional product was compared. In the conventional product, the electrode plates are covered with a laminate film that is a laminate of a polyethylene terephthalate layer (25 μm), a polyvinylidene chloride layer (15 μm), and an unstretched polypropylene layer (60 μm) from the outer surface. 2V-2Ah sealed secondary battery.
【００２６】本発明品と従来品とを各50個ずつ、60℃の
飽和水蒸気中に１カ月放置し、ラミネート剥離の状況を
調査した。その結果、従来品では14個ラミネート剥離が
発生したが、本発明品では電槽にラミネートフィルムを
用いていないので、ラミネート剥離が発生しないことを
確認した。Fifty pieces of each of the present invention product and the conventional product were allowed to stand in saturated steam at 60 ° C. for one month, and the state of delamination was investigated. As a result, it was confirmed that 14 pieces of laminate peeling occurred in the conventional product, but no laminate peeling occurred in the product of the present invention because no laminate film was used in the battery case.
【００２７】[0027]
【発明の効果】以上説明したように本発明に係る密閉型
二次電池及びその製造方法によれば、下記のような効果
を得ることができる。As described above, according to the sealed secondary battery and the method of manufacturing the same according to the present invention, the following effects can be obtained.
【００２８】請求項１に記載の密閉型二次電池では、電
槽をディップ成形電槽で形成したので、該ディップ成形
電槽は継ぎ目がなく、このため使用中にその継ぎ目が剥
がれる事故の発生が皆無になる利点がある。In the sealed secondary battery according to the first aspect, since the battery case is formed by the dip-molded battery case, the dip-molded battery case has no seam, and therefore the seam peels off during use. There is an advantage that there is nothing.
【００２９】請求項２に記載の密閉型二次電池では、極
板群を中間シール層で覆い、該中間シール層の外周をデ
ィップ成形電槽で覆ったので、該ディップ成形電槽の形
成時に成形用の樹脂が極板群中に侵入し、電池性能を阻
害するのを防止することができる。In the sealed secondary battery according to the second aspect, the electrode plate group is covered with the intermediate seal layer, and the outer periphery of the intermediate seal layer is covered with the dip-molded battery case. It is possible to prevent the molding resin from entering the electrode plate group and impairing the battery performance.
【００３０】請求項３に記載の密閉型二次電池では、中
間シール層をシート状若しくはフィルム状の熱収縮性合
成樹脂被覆体で形成したので、該熱収縮性合成樹脂被覆
体がシール作用の他に、極板群の積層間を密着させるよ
うに加圧する作用ももつようになる。In the sealed secondary battery according to the third aspect, since the intermediate seal layer is formed of a sheet-shaped or film-shaped heat-shrinkable synthetic resin coating, the heat-shrinkable synthetic resin coating has a sealing action. In addition, it also has a function of pressurizing so that the laminated layers of the electrode plates are brought into close contact with each other.
【００３１】請求項４に記載の密閉型二次電池では、シ
ート状若しくはフィルム状の熱収縮性合成樹脂被覆体の
開口部を粉末状合成樹脂の焼結・融合・成形部で封口し
たので、該熱収縮性合成樹脂被覆体の封口部が剥離しな
いように容易に封口することができる。In the sealed secondary battery according to the fourth aspect, since the opening of the sheet-shaped or film-shaped heat-shrinkable synthetic resin coating is sealed by the sintering / fusion / molding part of the powdery synthetic resin, The heat-shrinkable synthetic resin coating can be easily sealed so as not to peel off.
【００３２】請求項５に記載の密閉型二次電池の製造方
法では、極板群を中間シール層で覆ってから、該中間シ
ール層付き極板群を合成樹脂のゾル又はエマルジョンに
浸漬するので、浸漬時に該合成樹脂のゾル又はエマルジ
ョンが極板群中に侵入するのを阻止することができる。In the method of manufacturing the sealed secondary battery according to the fifth aspect, since the electrode plate group is covered with the intermediate seal layer, the electrode plate group with the intermediate seal layer is immersed in the sol or emulsion of synthetic resin. It is possible to prevent the sol or emulsion of the synthetic resin from entering the electrode plate group during immersion.
【図１】本発明に係る密閉型二次電池の一実施例の要部
横断面図である。FIG. 1 is a cross-sectional view of a main part of an embodiment of a sealed secondary battery according to the present invention.
【図２】従来の密閉型二次電池の要部横断面図である。FIG. 2 is a lateral cross-sectional view of a main part of a conventional sealed secondary battery.
１…陽極板、２…陰極板、３…セパレータ、４…極板
群、５ａ…ディップ成形電槽、６ａ…ディップ成形ポリ
プロピレン層、７ａ…ディップ成形ポリ塩化ビニリデン
層、８ａ…ディップ成形ポリエチレンテレフタレート
層、９…シート状若しくはフィルム状の熱収縮性合成樹
脂被覆体、１０…焼結・融合・成形部。DESCRIPTION OF SYMBOLS 1 ... Anode plate, 2 ... Cathode plate, 3 ... Separator, 4 ... Electrode plate group, 5a ... Dip molding battery case, 6a ... Dip molding polypropylene layer, 7a ... Dip molding polyvinylidene chloride layer, 8a ... Dip molding polyethylene terephthalate layer. , 9 ... Sheet-shaped or film-shaped heat-shrinkable synthetic resin coating, 10 ... Sintering / fusion / molding section.
Claims (5)
被覆されていることを特徴とする密閉型二次電池。1. A sealed secondary battery, wherein the electrode plate group is covered with a dip-molded battery case made of synthetic resin.
間シール層の外周がディップ成形電槽で被覆されている
ことを特徴とする密閉型二次電池。2. A sealed secondary battery, wherein the electrode plate group is covered with an intermediate seal layer, and the outer periphery of the intermediate seal layer is covered with a dip-molded battery case.
ィルム状の熱収縮性合成樹脂被覆体で形成されているこ
とを特徴とする請求項２に記載の密閉型二次電池。3. The sealed secondary battery according to claim 2, wherein the intermediate seal layer is formed of a sheet-shaped or film-shaped heat-shrinkable synthetic resin coating.
縮性合成樹脂被覆体の開口部は粉末状合成樹脂の焼結・
融合・成形部で封口されていることを特徴とする請求項
３に記載の密閉型二次電池。4. The sheet-shaped or film-shaped heat-shrinkable synthetic resin coating has an opening formed by sintering powdery synthetic resin.
The sealed secondary battery according to claim 3, wherein the sealed secondary battery is sealed by a fusion / molding portion.
シール層付き極板群を合成樹脂のゾル又はエマルジョン
に浸漬して引き上げて硬化させることによりディップ成
形電槽を形成することを特徴とする密閉型二次電池の製
造方法。5. A dip-molded battery case is formed by covering an electrode plate group with an intermediate seal layer, immersing the electrode plate group with the intermediate seal layer in a sol or emulsion of a synthetic resin, pulling it up and curing it. And a method for manufacturing a sealed secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3227941A JPH0567456A (en) | 1991-09-09 | 1991-09-09 | Sealed-type secondary battery and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3227941A JPH0567456A (en) | 1991-09-09 | 1991-09-09 | Sealed-type secondary battery and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0567456A true JPH0567456A (en) | 1993-03-19 |
Family
ID=16868683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3227941A Pending JPH0567456A (en) | 1991-09-09 | 1991-09-09 | Sealed-type secondary battery and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0567456A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6455192B1 (en) * | 1999-11-09 | 2002-09-24 | Samsung Sdi Co., Ltd. | Battery case |
| US7094137B2 (en) | 2000-09-28 | 2006-08-22 | Tateo Uegaki | Polishing device |
| KR100824874B1 (en) * | 2006-08-24 | 2008-04-23 | 삼성에스디아이 주식회사 | Can Type Rechargeable Battery Including Protecting Material |
| US8911320B2 (en) | 2009-08-28 | 2014-12-16 | Makita Corporation | Power tool |
| EP3333928A4 (en) * | 2016-06-09 | 2018-06-13 | LG Chem, Ltd. | Secondary battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127359A (en) * | 1983-01-10 | 1984-07-23 | Matsushita Electric Ind Co Ltd | Method for manufacturing lead storage battery |
| JPS6113554A (en) * | 1984-06-28 | 1986-01-21 | Matsushita Electric Ind Co Ltd | Sealed lead-acid battery |
| JPH02123661A (en) * | 1988-10-31 | 1990-05-11 | Shin Kobe Electric Mach Co Ltd | Sealed lead-acid battery |
-
1991
- 1991-09-09 JP JP3227941A patent/JPH0567456A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127359A (en) * | 1983-01-10 | 1984-07-23 | Matsushita Electric Ind Co Ltd | Method for manufacturing lead storage battery |
| JPS6113554A (en) * | 1984-06-28 | 1986-01-21 | Matsushita Electric Ind Co Ltd | Sealed lead-acid battery |
| JPH02123661A (en) * | 1988-10-31 | 1990-05-11 | Shin Kobe Electric Mach Co Ltd | Sealed lead-acid battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6455192B1 (en) * | 1999-11-09 | 2002-09-24 | Samsung Sdi Co., Ltd. | Battery case |
| US7094137B2 (en) | 2000-09-28 | 2006-08-22 | Tateo Uegaki | Polishing device |
| KR100824874B1 (en) * | 2006-08-24 | 2008-04-23 | 삼성에스디아이 주식회사 | Can Type Rechargeable Battery Including Protecting Material |
| US8911320B2 (en) | 2009-08-28 | 2014-12-16 | Makita Corporation | Power tool |
| EP3333928A4 (en) * | 2016-06-09 | 2018-06-13 | LG Chem, Ltd. | Secondary battery |
| JP2018537834A (en) * | 2016-06-09 | 2018-12-20 | エルジー・ケム・リミテッド | Secondary battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
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