JP2003317795A - Battery provided with pressure absorbing structure - Google Patents
Battery provided with pressure absorbing structureInfo
- Publication number
- JP2003317795A JP2003317795A JP2002122522A JP2002122522A JP2003317795A JP 2003317795 A JP2003317795 A JP 2003317795A JP 2002122522 A JP2002122522 A JP 2002122522A JP 2002122522 A JP2002122522 A JP 2002122522A JP 2003317795 A JP2003317795 A JP 2003317795A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- current collector
- active material
- pressure
- pressure absorbing
- 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
- 239000011149 active material Substances 0.000 claims abstract description 48
- 239000000126 substance Substances 0.000 claims abstract description 29
- 239000007773 negative electrode material Substances 0.000 claims description 37
- 239000007774 positive electrode material Substances 0.000 claims description 34
- 238000010521 absorption reaction Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 26
- 229920005989 resin Polymers 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 15
- 239000000470 constituent Substances 0.000 claims description 13
- 239000008151 electrolyte solution Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 239000012510 hollow fiber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 1
- 239000012811 non-conductive material Substances 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract 2
- 239000006260 foam Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 31
- 239000000843 powder Substances 0.000 description 24
- 229920000049 Carbon (fiber) Polymers 0.000 description 22
- 239000004917 carbon fiber Substances 0.000 description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 22
- 229910052759 nickel Inorganic materials 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 14
- 229910052739 hydrogen Inorganic materials 0.000 description 14
- 239000001257 hydrogen Substances 0.000 description 14
- 239000008096 xylene Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 11
- 239000011231 conductive filler Substances 0.000 description 11
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 9
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 7
- 239000006229 carbon black Substances 0.000 description 6
- 230000008602 contraction Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 239000006230 acetylene black Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000011361 granulated particle Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000003273 ketjen black Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 241000772600 Norion Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 101100116283 Arabidopsis thaliana DD11 gene Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 102100031083 Uteroglobin Human genes 0.000 description 1
- 108090000203 Uteroglobin Proteins 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、集電体や隔壁、電
池セル、セパレータなどの電池構成部材に圧力を吸収す
る特性を持たせることで、電池の耐久性を向上させた圧
力吸収構造を備えた電池に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a pressure-absorbing structure in which the durability of a battery is improved by providing a battery constituent member such as a current collector, a partition wall, a battery cell, and a separator with a property of absorbing pressure. It relates to a battery provided.
【０００２】[0002]
【従来の技術】特許第３０５１４０１号公報には、電池
活物質を粉体又は粒子にして構成した、いわゆる三次元
電池が開示されている。また、積層化された三次元電池
についても既に特許出願がなされている（特願平１１−
３０９６２７）。また、粒子状活物質を充填して固定層
とした三次元電池についても、本出願人が特許出願して
いる（特願２０００−３３２２８１、特願２０００−３
３２５０３）。また、活物質材料粉末に導電フィラーを
加えて樹脂で粒子状等に成形し硬化させた電池活物質
（特願２００１−２８０８４７）や、活物質材料粉末に
導電フィラーを加え樹脂で硬化させた一次成形体をプレ
ート状等に二次成形した電池活物質（特願２００１−２
８０８４８）についても、本出願人が特許出願してい
る。さらに、蛇腹状セパレータを用いた電池（特願２０
０１−２８４４９１）、袋状セパレータを用いた電池
（特願２００２−６７９７６）、プリーツ状セパレータ
を用いた電池（特願２００２−６７９７７）について
も、本出願人が特許出願している。2. Description of the Related Art Japanese Patent No. 3051401 discloses a so-called three-dimensional battery in which a battery active material is formed into powder or particles. Also, a patent application has already been filed for stacked three-dimensional batteries (Japanese Patent Application No. 11-
309627). The present applicant has also applied for a patent for a three-dimensional battery in which a particulate active material is filled to form a fixed layer (Japanese Patent Application Nos. 2000-332281 and 2000-3).
32503). Further, a battery active material (Japanese Patent Application No. 2001-280847) obtained by adding a conductive filler to an active material powder and molding the resin into particles or the like, or a primary material obtained by adding a conductive filler to the active material powder and curing the resin. A battery active material obtained by secondary molding of a molded body into a plate shape (Japanese Patent Application No. 2001-2
The present applicant has also applied for a patent for 80848). Furthermore, a battery using a bellows-shaped separator (Japanese Patent Application No. 20
01-284491), a battery using a bag-shaped separator (Japanese Patent Application No. 2002-67976), and a battery using a pleated separator (Japanese Patent Application No. 2002-67977) have also applied for patents.
【０００３】[0003]
【発明が解決しようとする課題】充電と放電が可能であ
る二次電池は、電池の充電／放電によって電池活物質が
膨張／収縮するので、活物質と集電体や隔壁との接触抵
抗が変化し、長期的には電池性能が劣化していく。この
場合、電池活物質を薄くつくり、正極と負極を近距離に
配置することにより、膨張／収縮はある程度吸収できる
が、やはり長期的に見ると電池性能が劣化していく。ま
た、事前に膨張／収縮の割合を実験的に求めたり、ある
いは計算により算出したりして電池設計しても、セルを
積層しているタイプでは、それぞれの電池のバランスが
崩れるなどにより、性能が劣化していく。In a rechargeable battery that can be charged and discharged, the battery active material expands / contracts as the battery is charged / discharged, so that the contact resistance between the active material and the current collector or partition wall is reduced. It changes and battery performance deteriorates in the long run. In this case, by making the battery active material thin and disposing the positive electrode and the negative electrode in a short distance, expansion / contraction can be absorbed to some extent, but the battery performance deteriorates in the long term. In addition, even if the battery is designed by experimentally obtaining the expansion / contraction ratio in advance, or by calculating it, in the type in which the cells are stacked, the balance of each battery may be lost and Deteriorates.
【０００４】本発明は上記の諸点に鑑みなされたもの
で、本発明の目的は、集電体や隔壁、電池セル、セパレ
ータなどの電池構成部材に圧力を吸収する特性を持たせ
ることにより、電池活物質の膨張／収縮を圧力吸収体で
吸収して、活物質と集電体や隔壁との接触を良好な状態
で長期間保ち、電池性能の劣化を遅延させることができ
る圧力吸収構造を備えた電池を提供することにある。The present invention has been made in view of the above points, and an object of the present invention is to provide a battery constituent member such as a current collector, a partition wall, a battery cell, and a separator with a characteristic of absorbing a pressure, so that a battery can be obtained. Equipped with a pressure-absorbing structure that absorbs expansion / contraction of the active material with a pressure absorber, keeps the active material in contact with the current collector and the partition in good condition for a long time, and delays deterioration of battery performance. To provide a good battery.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の圧力吸収構造を備えた電池は、電池セル
に対向して設けられた正極集電体と負極集電体の間に、
セパレータを挟んで正極集電体側に正極活物質の粒子又
は成形体が充填され、負極集電体側に負極活物質の粒子
又は成形体が充填され、電池セルに電解液を充填して構
成されており、集電体、電池セル、セパレータなどの電
池構成部材の一部又は全部が、圧力を吸収する特性を持
たせた圧力吸収部材であるように構成されている（図
８、図９、図１０、図１１参照）。In order to achieve the above-mentioned object, a battery provided with a pressure absorbing structure of the present invention is provided between a positive electrode current collector and a negative electrode current collector provided opposite to a battery cell. To
The positive electrode current collector side is filled with particles or a molded body of the positive electrode active material with the separator interposed therebetween, the negative electrode current collector side is filled with particles or a molded body of the negative electrode active material, and the battery cell is filled with an electrolytic solution. In addition, a part or all of the battery constituent members such as the current collector, the battery cell, and the separator are configured to be pressure absorbing members having a characteristic of absorbing pressure (FIG. 8, FIG. 9, FIG. 10, see FIG. 11).
【０００６】また、本発明の電池は、電池セルに対向し
て設けられた正極集電体と負極集電体の間に、蛇腹状の
セパレータが交互に両集電体に近接するように配置さ
れ、蛇腹状のセパレータと正極集電体で区画される空間
に正極活物質が充填され、蛇腹状のセパレータと負極集
電体で区画される空間に負極活物質が充填されて、正極
活物質と負極活物質とがセパレータを挟んで交互に組み
込まれ、電池セルに電解液を充填して構成されており、
集電体、電池セル、セパレータなどの電池構成部材の一
部又は全部が、圧力を吸収する特性を持たせた圧力吸収
部材であることを特徴としている（図６、図７参照）。Further, in the battery of the present invention, a bellows-shaped separator is alternately arranged between the positive electrode current collector and the negative electrode current collector provided facing the battery cell so as to be close to both current collectors. The space defined by the bellows-shaped separator and the positive electrode current collector is filled with the positive electrode active material, and the space defined by the bellows-shaped separator and the negative electrode current collector is filled with the negative electrode active material. The negative electrode active material and the negative electrode active material are alternately inserted with the separator interposed therebetween, and the battery cell is filled with the electrolytic solution.
Part or all of the battery constituent members such as the current collector, the battery cell, and the separator are pressure absorbing members having a characteristic of absorbing pressure (see FIGS. 6 and 7).
【０００７】また、本発明の電池は、電池セルに対向し
て設けられた正極集電体と負極集電体の間に、正極活物
質を少なくとも１辺が開口した袋状セパレータに充填し
たものと、負極活物質を少なくとも１辺が開口した袋状
セパレータに充填したものとが、正極集電体側に正極活
物質を充填した袋状セパレータの開口部が位置し、負極
集電体側に負極活物質を充填した袋状セパレータの開口
部が位置するように交互に重ね合わせて充填され、電池
セルに電解液を充填して構成されており、集電体、電池
セル、セパレータなどの電池構成部材の一部又は全部
が、圧力を吸収する特性を持たせた圧力吸収部材である
ことを特徴としている（図４、図５参照）。Further, the battery of the present invention is one in which a positive electrode active material is filled in a bag-shaped separator having at least one side opened between a positive electrode current collector and a negative electrode current collector provided opposite to a battery cell. And a negative electrode active material filled in a bag-shaped separator having at least one side opened, in which the opening of the bag-shaped separator filled with the positive electrode active material is located on the positive electrode current collector side, and the negative electrode active material is closed on the negative electrode current collector side. A bag-shaped separator filled with a substance is alternately stacked so that the openings are positioned so as to be positioned, and is configured by filling a battery cell with an electrolytic solution. A battery component such as a current collector, a battery cell, or a separator. Is partly or wholly a pressure absorbing member having a characteristic of absorbing pressure (see FIGS. 4 and 5).
【０００８】また、本発明の電池は、電池セルに対向し
て設けられた正極集電体と負極集電体の間に、交互に両
集電体に近接するような形状のプリーツ状セパレータに
一方から正極活物質を充填し、他方から負極活物質を充
填して、セパレータのひだで形成される空間に正極活物
質と負極活物質とを交互に配置したものが、正極集電体
側に正極活物質が充填された面が位置し、負極集電体側
に負極活物質が充填された面が位置するように充填さ
れ、電池セルに電解液を充填して構成されており、集電
体、電池セル、セパレータなどの電池構成部材の一部又
は全部が、圧力を吸収する特性を持たせた圧力吸収部材
であることを特徴としている（図１、図２、図３参
照）。上記の構成においては、電池活物質の任意の面を
イオン通過型集電体で被覆することが可能であり、その
場合、イオン通過型集電体に圧力を吸収する特性を持た
せてもよい。Further, the battery of the present invention is a pleated separator having a shape in which the positive electrode current collector and the negative electrode current collector are provided so as to face the battery cell and are alternately adjacent to both current collectors. The positive electrode active material is filled from one side, the negative electrode active material is filled from the other side, and the positive electrode active material and the negative electrode active material are alternately arranged in the space formed by the folds of the separator. The surface filled with the active material is located so that the surface filled with the negative electrode active material on the side of the negative electrode current collector is located, and the battery cell is filled with the electrolytic solution. A part or all of the battery constituent members such as battery cells and separators are pressure absorbing members having a characteristic of absorbing pressure (see FIGS. 1, 2 and 3). In the above structure, it is possible to coat any surface of the battery active material with the ion-passing current collector, and in that case, the ion-passing current collector may have a property of absorbing pressure. .
【０００９】また、本発明の電池は、電池セルに対向し
て設けられた正極集電体と負極集電体の間に、正極活物
質で表面をコートした電子伝導性のある繊維状物質が正
極集電体と接触し、負極活物質で表面をコートした電子
伝導性のある繊維状物質が負極集電体と接触するよう
に、正極として使用する繊維状物質と負極として使用す
る繊維状物質とをセパレータを挟んで並べるかもしくは
織物として積層し、又は正極として使用する繊維状物質
の外表面が電子伝導性が無くイオン伝導性のある物質で
被覆されたものと、負極として使用する繊維状物質の外
表面が電子伝導性が無くイオン伝導性のある物質で被覆
されたものとを並べるかもしくは織物として積層し、電
池セルに電解液を充填して構成されており、集電体、電
池セル、セパレータなどの電池構成部材の一部又は全部
が、圧力を吸収する特性を持たせた圧力吸収部材である
ことを特徴としている（図１２、図１３参照）。これら
の構成においては、単セルを隔壁で隔てて積層してい
き、高電圧とした電池とすることができ、その場合、隔
壁に圧力を吸収する特性を持たせることが可能である
（図２、図３参照）。Further, in the battery of the present invention, a fibrous substance having an electron conductivity whose surface is coated with a positive electrode active material is provided between the positive electrode current collector and the negative electrode current collector provided facing the battery cell. The fibrous substance used as the positive electrode and the fibrous substance used as the negative electrode so that the fibrous substance having electron conductivity which is in contact with the positive electrode current collector and whose surface is coated with the negative electrode active material is brought into contact with the negative electrode current collector. And are placed side by side with a separator in between or laminated as a woven fabric, or the outer surface of the fibrous substance used as the positive electrode is coated with a substance having no electron conductivity but ion conductivity, and a fibrous substance used as the negative electrode. The outer surface of the substance is lined or laminated with a substance coated with a substance having no electron conductivity and ion conductivity, or laminated as a woven fabric, and the battery cell is filled with an electrolytic solution. Cell, separator Some or all of any battery components that is characterized by a pressure absorbing member which gave a characteristic of absorbing the pressure (refer to FIG. 12, FIG. 13). In these configurations, the unit cells are stacked with the partition walls separated to form a high voltage battery, and in this case, the partition walls can have a characteristic of absorbing pressure (FIG. 2). , See FIG. 3).
【００１０】圧力吸収部材としては、空気バネのように
内部に空間を有する部材や板バネ状のものを有する部材
が使用できる（図２、図３参照）。また、多数密閉部屋
が存在するハニカム構造状の部材が使用できる（図４、
図５参照）。また、内部に弾性のある物質を１種あるい
は複数種類充填した部材が使用できる。また、内部に空
気と弾性のある物質を１種あるいは複数種類充填した部
材が使用できる（図６、図７参照）。また、それ自体が
弾性のある物質である部材が使用できる（図１２、図１
３参照）。また、繊維状あるいは発泡状のものを成形し
た部材が使用できる（図８、図９参照）。また、中空糸
状のものを成形した部材が使用できる（図１０、図１１
参照）。これらの部材は、活物質と集電体の間、活物質
と隔壁の間、活物質と電池セルの間、活物質とセパレー
タの間などに装入して使用してもよいし、集電体や隔
壁、電池セル、セパレータ自体を上記の部材としてもよ
い。As the pressure absorbing member, a member having a space inside such as an air spring or a member having a leaf spring shape can be used (see FIGS. 2 and 3). Further, a member having a honeycomb structure having a large number of closed chambers can be used (Fig. 4,
(See FIG. 5). Further, a member in which one or more kinds of elastic substances are filled can be used. Further, a member having one kind or a plurality of kinds filled with air and an elastic material can be used (see FIGS. 6 and 7). Further, a member which is itself an elastic material can be used (see FIGS. 12 and 1).
3). Further, a member formed by molding a fibrous or foamed material can be used (see FIGS. 8 and 9). Further, a hollow fiber-shaped member can be used (FIGS. 10 and 11).
reference). These members may be used by charging them between the active material and the current collector, between the active material and the partition wall, between the active material and the battery cell, between the active material and the separator, or the like. The body, partition walls, battery cells, and separator itself may be the above members.
【００１１】また、圧力吸収部材としては、表面をディ
ンプル加工したプレートや波板状プレート、プリーツ状
プレートなどが使用できる（図１参照）。これらの部材
は、活物質と集電体の間、活物質と隔壁の間、活物質と
電池セルの間、活物質とセパレータの間などに装入して
使用することができる。なお、集電体や隔壁、電池セ
ル、セパレータ自体をディンプル加工、波板状に成形、
プリーツ加工等してもよい。集電体や隔壁は、電子伝導
性がありイオン伝導性がない物質であればよく、例え
ば、プラスチックなどの射出成形品やプレス成形品を金
属メッキしたものとか、ニッケル金属薄板をプレス成形
したものや、金属薄板をプレス成形したものに金属メッ
キしたものなど、安価に製造できる。As the pressure absorbing member, a plate whose surface is dimple-processed, a corrugated plate, a pleated plate or the like can be used (see FIG. 1). These members can be used by being inserted between the active material and the current collector, between the active material and the partition wall, between the active material and the battery cell, between the active material and the separator, and the like. Incidentally, the current collector and the partition wall, the battery cell, the separator itself is dimple processed, molded into a corrugated plate shape,
Pleating may be performed. The current collector and the partition wall may be made of any substance that has electronic conductivity and no ionic conductivity, such as injection-molded products such as plastic or press-molded products that are metal-plated, or nickel-metal thin plates that are press-molded. Also, it is possible to manufacture at low cost, such as a metal thin plate press-molded and metal-plated.
【００１２】電池セルは、電子伝導性、イオン伝導性と
もにない物質であればよく、例えば、プラスチックなど
の射出成形品やプレス成形品、あるいは金属板に電子伝
導性、イオン伝導性のない樹脂をコーティングしたも
の、あるいは不織布や発泡プラスチック、発泡金属など
のイオン伝導性があるものに電子伝導性、イオン伝導性
のない樹脂をコーティングしたものなど、安価に製造で
きる。セパレータは、電子伝導性がなくイオン伝導性が
ある物質であればよく、例えば、不織布や発泡プラスチ
ックなど、安価に製造できる。イオン通過型集電体は、
電子伝導性、イオン伝導性ともにある物質であればよ
く、例えば、発泡ニッケル金属、あるいは不織布や発泡
プラスチックにニッケルメッキしたものなど、安価に製
造できる。The battery cell may be a substance having neither electron conductivity nor ion conductivity. For example, an injection molded product such as plastic or a press molded product, or a metal plate made of a resin having neither electron conductivity nor ion conductivity. It can be manufactured at a low cost, such as a coated product or a product having ion conductivity such as nonwoven fabric, foamed plastic or foamed metal coated with a resin having no electron conductivity or ion conductivity. The separator may be a substance that has no electronic conductivity but ionic conductivity, and can be manufactured at low cost, for example, nonwoven fabric or foamed plastic. The ion passing current collector is
Any substance having both electron conductivity and ion conductivity may be used, and, for example, a foamed nickel metal, a nonwoven fabric or a foamed plastic plated with nickel, or the like can be manufactured at low cost.
【００１３】上記のように、圧力吸収部材である集電
体、隔壁、イオン通過型集電体、集電体や隔壁と活物質
の間に装入される部材などの表面に、耐アルカリ性の金
属メッキ（ニッケル、チタン等）を施して使用すること
ができる。また、圧力吸収部材である電池セル、電池セ
ルと活物質の間に装入される部材の表面に、耐アルカリ
性で非導電性の樹脂をコーティングして使用することが
できる。さらに、圧力吸収部材であるセパレータ、セパ
レータと活物質の間に装入される部材の表面に、耐アル
カリ性で非導電性の多孔性樹脂をコーティングして使用
することができる。As described above, the surface of the pressure-absorbing member such as the current collector, the partition wall, the ion passage type current collector, the member inserted between the current collector or the partition wall and the active material is resistant to alkali. It can be used by applying metal plating (nickel, titanium, etc.). In addition, the surface of a battery cell that is a pressure absorbing member or a member that is inserted between a battery cell and an active material can be coated with an alkali-resistant and non-conductive resin before use. Further, the surface of the pressure absorbing member, which is a separator or a member inserted between the separator and the active material, may be coated with an alkali-resistant and non-conductive porous resin for use.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明するが、本発明は下記の実施の形態に何ら限定さ
れるものではなく、適宜変更して実施することが可能な
ものである。図１は、本発明の実施の第１形態による圧
力吸収構造を備えた電池の一例を示している。本実施の
形態は、一例として、プリーツ状セパレータを用いた基
本ユニットのみで電池を構成した場合で、波板状圧力吸
収板を活物質と集電体の間に装入したものである。活物
質としては、例えば、電池反応を起こす活物質材料に導
電性フィラーと樹脂を加えたものが使用できる。活物質
材料としては、電池の種類や正極、負極を問わず、全て
の活物質材料を用いることが可能であるが、ニッケル水
素電池の場合、一例として、水酸化ニッケル粉末２００
０gとＥＶＡ樹脂２００gと導電性フィラー（カーボンブ
ラックとカーボン繊維）３００gを混合して正極活物質
１０をつくることができる。同様に、ニッケル水素電池
の場合、一例として、水素吸蔵合金粉末６０００gとＥ
ＶＡ樹脂２００gと導電性フィラー（カーボンブラック
とカーボン繊維）３００gを混合して負極活物質１２を
つくることができる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to the following embodiments, and can be appropriately modified and implemented. . FIG. 1 shows an example of a battery including a pressure absorbing structure according to the first embodiment of the present invention. In the present embodiment, as an example, a battery is configured only with a basic unit using a pleated separator, and a corrugated plate pressure absorbing plate is inserted between an active material and a current collector. As the active material, for example, an active material that causes a battery reaction to which a conductive filler and a resin are added can be used. As the active material material, it is possible to use all active material materials, regardless of the type of battery, positive electrode, and negative electrode. In the case of a nickel hydrogen battery, as an example, nickel hydroxide powder 200
The positive electrode active material 10 can be prepared by mixing 0 g, EVA resin 200 g, and conductive filler (carbon black and carbon fiber) 300 g. Similarly, in the case of a nickel hydrogen battery, as an example, 6000 g of hydrogen storage alloy powder and E
The negative electrode active material 12 can be prepared by mixing 200 g of the VA resin and 300 g of the conductive filler (carbon black and carbon fiber).
【００１５】つぎに、一例として、イオン通過型集電
体、セパレータ、イオン通過型集電体の順で重ねて積層
シートを作製し、このシートを直角方向より１mm厚さの
当て板で押して折り曲げる。さらに反対側から５mmの隙
間を空けて、１mm厚さの当て板で押して折り曲げる。こ
れらを繰り返して順次折り曲げていき、プリーツ状セパ
レータ１４とする。なお、プリーツ加工の方法は何でも
よく、プリーツの幅や長さ、厚み等も任意に選定でき
る。プリーツ状セパレータ１４の一方から正極活物質１
０を充填し、こぼれないように板などを当てる。続いて
他方から負極活物質１２を充填し、こぼれないように板
などを当てる。プリーツ状セパレータ１４に正極活物質
１０及び負極活物質１２を充填したものを、上下左右か
ら適度に圧密し、基本ユニットとする。Next, as an example, an ion-passing current collector, a separator, and an ion-passing current collector are stacked in this order to produce a laminated sheet, and this sheet is pressed and bent with a patch plate having a thickness of 1 mm from the right angle direction. . Leave a gap of 5mm from the opposite side and press it with a 1mm thick contact plate to bend it. These steps are repeated and sequentially bent to form the pleated separator 14. Any method of pleating can be used, and the width, length, thickness, etc. of the pleats can be arbitrarily selected. From one side of the pleated separator 14 to the positive electrode active material 1
Fill with 0 and hit a plate etc. so as not to spill. Then, the negative electrode active material 12 is filled from the other side, and a plate or the like is applied so as not to spill. A pleated separator 14 filled with the positive electrode active material 10 and the negative electrode active material 12 is appropriately compacted from above, below, left and right to form a basic unit.
【００１６】そして、一例として、ニッケル板をプレス
加工して溝深さ２mmで溝間隔２mmの波板状圧力吸収板１
６をつくる。この波板状圧力吸収板１６で上記の基本ユ
ニットを挟んだ状態で、正極集電体１８と正極活物質１
０の間及び負極集電体２０と負極活物質１２の間に波板
状圧力吸収板１６が配置されるように、正極集電体１
８、負極集電体２０を備えた電池セル２２に装填し、さ
らに電解質（ＫＯＨ、ＮａＯＨ、ＬｉＯＨ等）溶液を充
填して、電池として組み立てる。本実施の形態では、波
板状圧力吸収板の他に、ディンプル加工した圧力吸収板
やプリーツ状の圧力吸収板などが使用できる。電池活物
質の膨張・収縮が圧力吸収部材で吸収されるので、活物
質と集電体の接触が良好な状態を長期間保つことがで
き、電池性能の劣化が遅延できる。Then, as an example, a nickel plate is pressed to form a corrugated plate pressure absorbing plate 1 having a groove depth of 2 mm and a groove interval of 2 mm.
Make 6. The positive electrode current collector 18 and the positive electrode active material 1 are sandwiched between the corrugated plate pressure absorbing plates 16 and the basic unit.
0 and the negative electrode current collector 20 and the negative electrode active material 12 so that the corrugated plate-shaped pressure absorption plate 16 is arranged.
8. The battery cell 22 equipped with the negative electrode current collector 20 is loaded and further filled with an electrolyte (KOH, NaOH, LiOH, etc.) solution to assemble a battery. In the present embodiment, in addition to the corrugated plate-shaped pressure absorption plate, a dimple-processed pressure absorption plate, a pleated pressure absorption plate, or the like can be used. Since the expansion / contraction of the battery active material is absorbed by the pressure absorbing member, the good contact between the active material and the current collector can be maintained for a long time, and the deterioration of the battery performance can be delayed.
【００１７】図２は、本発明の実施の第２形態による圧
力吸収構造を備えた電池の一例を示している。本実施の
形態は、プリーツ状セパレータを用いた基本ユニットを
複数個（図２では、一例として３個）並列に組み込んだ
ものを複数層（図２では、一例として３層）直列に積層
して電池を構成した場合で、空気バネ式圧力吸収型隔壁
を各層の間に装入したものである。基本ユニット２４の
製作方法は、実施の第１形態の場合と同様である。一例
として、図３に示すような外表面がニッケル製（厚さ
０．２mm）で内部に空気の入った密閉空間を有する厚み
２mmの空気バネ式圧力吸収隔壁２６を使用する。電池セ
ル２２に基本ユニット２４を３個並列に装填し、これを
空気バネ式圧力吸収隔壁２６を介して直列に３個接続
し、電池として組み立てる。本実施の形態では、空気バ
ネ式の部材の他に、板バネ状の部材などが使用できる。
他の構成及び作用は、実施の第１形態の場合と同様であ
る。電池活物質の膨張・収縮が圧力吸収部材で吸収され
るので、活物質と隔壁や集電体の接触が良好な状態を長
期間保つことができ、電池性能の劣化が遅延できる。FIG. 2 shows an example of a battery provided with a pressure absorbing structure according to the second embodiment of the present invention. In this embodiment, a plurality of basic units using pleated separators (three in FIG. 2 as an example) are installed in parallel and a plurality of layers (three as an example in FIG. 2) are laminated in series. In the case of constructing a battery, an air spring type pressure absorption type partition wall is inserted between each layer. The manufacturing method of the basic unit 24 is the same as that of the first embodiment. As an example, as shown in FIG. 3, an air spring type pressure absorption partition wall 26 having a thickness of 2 mm having an outer surface made of nickel (thickness 0.2 mm) and having a sealed space containing air therein is used. Three basic units 24 are loaded in parallel in the battery cells 22, and three of the basic units 24 are connected in series via the air spring type pressure absorption partition walls 26 to assemble a battery. In the present embodiment, a leaf spring-shaped member or the like can be used in addition to the air spring type member.
Other configurations and operations are similar to those of the first embodiment. Since the expansion / contraction of the battery active material is absorbed by the pressure absorbing member, the good contact between the active material and the partition walls or the current collector can be maintained for a long time, and the deterioration of the battery performance can be delayed.
【００１８】図４は、本発明の実施の第３形態による圧
力吸収構造を備えた電池の一例を示している。本実施の
形態は、袋状セパレータを用いた基本ユニットのみで電
池を構成した場合で、ハニカム状圧力吸収集電体を装填
したものである。一例として、ニッケル水素電池の場
合、水酸化ニッケル粉末２０００gとＥＶＡ樹脂２００g
と導電性フィラー（カーボンブラックとカーボン繊維）
３００gを混合した後、０．１MPaの圧力で加圧成形し
て、１００mm×３０mm×３mmＴのプレート状の正極活物
質２８をつくることができる。同様に、水素吸蔵合金粉
末６０００gとＥＶＡ樹脂２００gと導電性フィラー（カ
ーボンブラックとカーボン繊維）３００gを混合した
後、０．１MPaの圧力で加圧成形して、１００mm×３０m
m×２mmＴのプレート状の負極活物質３０をつくること
ができる。プレート状の正極活物質２８、負極活物質３
０の表面の任意の面（例えば、４面）をイオン通過型集
電体３２（発泡ニッケルシート）で被覆する。この正極
活物質２８、負極活物質３０をそれぞれ袋状セパレータ
３４に充填する。袋状セパレータ３４は、平面状のセパ
レータを２つに折ったり、２枚重ねるなどして、１〜３
辺を融着又は縫合し、２辺又は３辺が閉じた袋状とした
ものであり、閉じ方等は任意である。FIG. 4 shows an example of a battery having a pressure absorbing structure according to the third embodiment of the present invention. The present embodiment is a case where a battery is configured only by a basic unit using a bag-shaped separator, and a honeycomb-shaped pressure absorption current collector is loaded. As an example, in the case of a nickel-hydrogen battery, 2000 g of nickel hydroxide powder and 200 g of EVA resin
And conductive filler (carbon black and carbon fiber)
After mixing 300 g, the plate-shaped positive electrode active material 28 of 100 mm × 30 mm × 3 mmT can be formed by pressure molding at a pressure of 0.1 MPa. Similarly, 6000 g of hydrogen-absorbing alloy powder, 200 g of EVA resin and 300 g of conductive filler (carbon black and carbon fiber) were mixed, and then pressure-molded at a pressure of 0.1 MPa to obtain 100 mm × 30 m.
A plate-shaped negative electrode active material 30 of m × 2 mmT can be prepared. Plate-shaped positive electrode active material 28, negative electrode active material 3
An arbitrary surface (for example, four surfaces) of the surface of 0 is covered with the ion passage type current collector 32 (foamed nickel sheet). The positive electrode active material 28 and the negative electrode active material 30 are filled in the bag-shaped separator 34, respectively. The bag-shaped separator 34 is formed by folding a planar separator in two or stacking two flat separators.
The sides are fused or sewn to form a bag shape with two or three sides closed, and the closing method is arbitrary.
【００１９】正極活物質２８を袋状セパレータ３４に充
填したものと、負極活物質３０を袋状セパレータ３４に
充填したものとを、交互に重ね合わせて基本ユニットと
する。なお、基本ユニットに含まれる活物質の数は任意
である。そして、一例として、図５に示すような、内部
に空気を充填した多数の密閉小部屋（内部空間：２mm□
×１００mmＬなど任意）を有する鉄製で、外表面がニッ
ケルメッキされた厚み２mmのハニカム状圧力吸収集電体
３６を使用する。ハニカム状圧力吸収集電体３６を正極
集電体１８、負極集電体２０それぞれに配置し、電池セ
ル２２に上記の基本ユニットを装填して、電池として組
み立てる。なお、袋状セパレータと集電体が接触する箇
所が過度に圧密されショートする場合は、その箇所を熱
や超音波などによりセパレータ自体を融着させる、ある
いはセパレータ側に絶縁体の樹脂を塗る、あるいは活物
質に絶縁体の樹脂を塗るなどによりショートを防止す
る。他の構成及び作用は、実施の第１形態の場合と同様
である。A bag-shaped separator 34 filled with the positive electrode active material 28 and a bag-shaped separator 34 filled with the negative electrode active material 30 are alternately stacked to form a basic unit. The number of active materials contained in the basic unit is arbitrary. And, as an example, as shown in FIG. 5, a large number of closed small rooms (internal space: 2 mm □) filled with air.
A honeycomb pressure absorbing current collector 36 having a thickness of 2 mm, which is made of iron and has an outer surface of which is nickel-plated, is used. The honeycomb-shaped pressure absorption current collector 36 is arranged on each of the positive electrode current collector 18 and the negative electrode current collector 20, and the battery cell 22 is loaded with the above-mentioned basic unit to assemble it as a battery. In the case where the contact between the bag-shaped separator and the collector is excessively compacted and short-circuited, the separator itself is fused by heat or ultrasonic waves, or the separator side is coated with a resin of an insulator, Alternatively, a short circuit is prevented by applying an insulating resin to the active material. Other configurations and operations are similar to those of the first embodiment.
【００２０】図６は、本発明の実施の第４形態による圧
力吸収構造を備えた電池の一例を示している。本実施の
形態は、蛇腹状セパレータを用いた基本ユニットのみで
電池を構成した場合で、内部に空気と弾性のある物質を
充填した圧力吸収集電体を装填したものである。イオン
通過型集電体３２で被覆した正極活物質２８、負極活物
質３０の製作方法は、実施の第３形態の場合と同様であ
る。蛇腹状セパレータ３８を挟んで正極活物質２８、負
極活物質３０を交互に組み込む。そして、一例として、
図７に示すような外表面がニッケル製で内部に直径２mm
のゴム球と空気の入った密閉空間を有する厚み２mmの圧
力吸収集電体４０を使用する。弾性のある物質として
は、ゴムだけでなく任意の物質が使用できる。この圧力
吸収集電体４０は、前述した空気バネ式のニッケル製部
材の内部にゴム球等を充填してつくることができる。こ
の圧力吸収集電体４０を正極集電体１８、負極集電体２
０それぞれに配置し、電池セル２２に上記の基本ユニッ
トを充填して、電池として組み立てる。他の構成及び作
用は、実施の第１、第３形態の場合と同様である。FIG. 6 shows an example of a battery having a pressure absorbing structure according to the fourth embodiment of the present invention. In the present embodiment, a battery is composed of only a basic unit using a bellows-shaped separator, and a pressure absorption current collector filled with air and a substance having elasticity is loaded inside. The method for producing the positive electrode active material 28 and the negative electrode active material 30 coated with the ion-passing current collector 32 is the same as in the case of the third embodiment. The positive electrode active material 28 and the negative electrode active material 30 are alternately incorporated with the bellows-shaped separator 38 interposed therebetween. And as an example,
As shown in Fig. 7, the outer surface is made of nickel and the inner diameter is 2 mm.
2 mm thick pressure-absorbing current collector 40 having a rubber ball and a closed space containing air is used. As the elastic substance, not only rubber but any substance can be used. The pressure absorption current collector 40 can be made by filling the inside of the air spring type nickel member described above with a rubber ball or the like. The pressure absorption current collector 40 is used as the positive electrode current collector 18 and the negative electrode current collector 2
0, and the battery cells 22 are filled with the above-mentioned basic unit to assemble as a battery. Other configurations and operations are similar to those of the first and third embodiments.
【００２１】図８は、本発明の実施の第５形態による圧
力吸収構造を備えた電池の一例を示している。本実施の
形態は、プレート状活物質を用いた基本ユニットのみで
電池を構成した場合で、繊維状圧力吸収集電体を装填し
たものである。一例として、ニッケル水素電池の場合、
水酸化ニッケル粉末２０００gとＥＶＡ樹脂２００gと導
電性フィラー（カーボンブラックとカーボン繊維）３０
０gを混合した後、０．１MPaの圧力で加圧成形して、１
００mm□×３mmＴのプレート状の正極活物質４２をつく
ることができる。同様に、水素吸蔵合金粉末６０００g
とＥＶＡ樹脂２００gと導電性フィラー（カーボンブラ
ックとカーボン繊維）３００gを混合した後、０．１MPa
の圧力で加圧成形して、１００mm□×２mmＴのプレート
状の負極活物質４４をつくることができる。そして、一
例として、図９に示すような、直径０．１mmのニッケル
繊維を不織布シートとしたものである厚み２mmの繊維状
圧力吸収集電体４６を使用する。繊維状圧力吸収集電体
（ニッケル繊維不織布シート）４６を正極集電体１８、
負極集電体２０それぞれに配置し、セパレータ４８を挟
んで電池セル２２に上記の正極活物質４２、負極活物質
４４を充填して、電池として組み立てる。本実施の形態
では、繊維状の圧力吸収部材の他に、発泡状の圧力吸収
部材（発泡ニッケルシートなど）が使用できる。他の構
成及び作用は、実施の第１、第３、第４形態の場合と同
様である。FIG. 8 shows an example of a battery provided with a pressure absorbing structure according to the fifth embodiment of the present invention. In the present embodiment, a battery is composed of only a basic unit using a plate-shaped active material, and a fibrous pressure absorption current collector is loaded. As an example, in the case of a nickel hydrogen battery,
2000 g of nickel hydroxide powder, 200 g of EVA resin and conductive filler (carbon black and carbon fiber) 30
After mixing 0g, press-mold at a pressure of 0.1MPa,
A plate-shaped positive electrode active material 42 of 00 mm □ × 3 mmT can be produced. Similarly, hydrogen storage alloy powder 6000g
0.1 MPa after mixing with 200 g of EVA resin and 300 g of conductive filler (carbon black and carbon fiber)
It is possible to form a plate-shaped negative electrode active material 44 of 100 mm □ × 2 mmT by pressure molding under the pressure of. Then, as an example, as shown in FIG. 9, a fibrous pressure-absorbing current collector 46 having a thickness of 2 mm, which is a non-woven sheet made of nickel fiber having a diameter of 0.1 mm, is used. The fibrous pressure absorption current collector (nickel fiber non-woven fabric sheet) 46 is connected to the positive electrode current collector 18,
The battery cell 22 is placed on each of the negative electrode current collectors 20 and the above-described positive electrode active material 42 and negative electrode active material 44 are filled in the battery cell 22 with the separator 48 sandwiched therebetween to assemble a battery. In the present embodiment, in addition to the fibrous pressure absorbing member, a foamed pressure absorbing member (foamed nickel sheet or the like) can be used. Other configurations and actions are similar to those of the first, third and fourth embodiments.
【００２２】図１０は、本発明の実施の第６形態による
圧力吸収構造を備えた電池の一例を示している。本実施
の形態は、造粒した粒子状の活物質を用いた基本ユニッ
トのみで電池を構成した場合で、中空糸状のものを成形
した圧力吸収集電体を装填したものである。一例とし
て、ニッケル水素電池の場合、内容積１０リットルのヘ
ンシェルミキサーに粒子状黒鉛（アセチレンブラック、
ケッチェンブラック）を１５０g入れ、１０００rpmで約
３分間攪拌して粒子状黒鉛を十分に分散する。これに、
電池用水酸化ニッケル粉末を１０００g、炭素繊維（商
品名：ドナＳ−２４７）を１００g添加し、約３分間１
０００rpmで混合する。別途、６０℃に加熱したキシレ
ン１０００gにエチレン酢酸ビニルコーポリマーを１５
０g添加し溶解させる。６０℃に加熱した前記の水素吸
蔵合金粉と導電性フィラーの混合物に、加熱キシレンに
溶解した樹脂を添加し、６０℃に加熱保持しながらヘン
シェルミキサーで攪拌する。次いで、攪拌しながらヘン
シェルミキサーを冷却し、混練物を冷却粉砕して粉末状
とする。この粉末をハイスピードミキサーに入れ、アジ
テータで粉体全体を攪拌しつつ、チョッパーで造粒粒子
の粒径を調節する。ハイスピードミキサーは２リットル
容量の物、アジテータの回転数は６００rpm、チョッパ
ーの回転数は１５００rpmで、この条件で攪拌しつつ、
粉体の温度を常温から５０℃に昇温する。造粒粒子が生
成した後、冷却しつつ攪拌を停止する。粒子はキシレン
を含んでいるため、この粒子を減圧乾燥機に入れ、５０
℃に加熱してキシレンを除去する。この粒子を冷却した
後、２．８８mm目の篩と１mm目の篩でふるい、１〜２．
８８mmの粒子を正極活物質５０とする。FIG. 10 shows an example of a battery having a pressure absorbing structure according to the sixth embodiment of the present invention. The present embodiment is a case where a battery is constituted only by a basic unit using a granulated particulate active material, and a pressure absorption current collector formed by molding a hollow fiber is loaded. As an example, in the case of a nickel-hydrogen battery, a Henschel mixer with an internal volume of 10 liters is charged with particulate graphite (acetylene black,
150 g of Ketjen black) was put in the mixture and stirred at 1000 rpm for about 3 minutes to sufficiently disperse the particulate graphite. to this,
Add 1000g of nickel hydroxide powder for battery and 100g of carbon fiber (Brand name: Dona S-247), for about 3 minutes 1
Mix at 000 rpm. Separately, add 15 g of ethylene vinyl acetate copolymer to 1000 g of xylene heated to 60 ° C.
Add 0 g and dissolve. A resin dissolved in heated xylene is added to the mixture of the hydrogen storage alloy powder and the conductive filler heated to 60 ° C., and the mixture is stirred with a Henschel mixer while being heated and maintained at 60 ° C. Next, the Henschel mixer is cooled with stirring, and the kneaded product is cooled and ground to give a powder. This powder is put into a high speed mixer, and the particle size of the granulated particles is adjusted with a chopper while stirring the whole powder with an agitator. The high speed mixer has a capacity of 2 liters, the rotation speed of the agitator is 600 rpm, and the rotation speed of the chopper is 1500 rpm. While stirring under these conditions,
The temperature of the powder is raised from room temperature to 50 ° C. After the granulated particles are generated, stirring is stopped while cooling. Since the particles contain xylene, put them in a vacuum dryer and
Remove to xylene by heating to ° C. After the particles are cooled, they are sieved with a 2.88 mm sieve and a 1 mm sieve, 1-2.
88 mm particles are used as the positive electrode active material 50.
【００２３】内容積１０リットルのヘンシェルミキサー
に粒子状黒鉛（アセチレンブラック、ケッチェンブラッ
ク）を１５０g入れ、１０００rpmで約３分間攪拌して粒
子状黒鉛を十分に分散する。これに、電池用水素吸蔵合
金粉末を２５００g、炭素繊維（商品名：ドナＳ−２４
７）を１００g添加し、約３分間１０００rpmで混合す
る。別途、６０℃に加熱したキシレン１０００gにエチ
レン酢酸ビニルコーポリマーを１５０g添加し溶解させ
る。６０℃に加熱した前記の水素吸蔵合金粉と導電性フ
ィラーの混合物に、加熱キシレンに溶解した樹脂を添加
し、６０℃に加熱保持しながらヘンシェルミキサーで攪
拌する。次いで、攪拌しながらヘンシェルミキサーを冷
却し、混練物を冷却粉砕して粉末状とする。この粉末を
ハイスピードミキサーに入れ、アジテータで粉体全体を
攪拌しつつ、チョッパーで造粒粒子の粒径を調節する。
ハイスピードミキサーは２リットル容量の物、アジテー
タの回転数は６００rpm、チョッパーの回転数は１５０
０rpmで、この条件で攪拌しつつ、粉体の温度を常温か
ら５０℃に昇温する。造粒粒子が生成した後、冷却しつ
つ攪拌を停止する。粒子はキシレンを含んでいるため、
この粒子を減圧乾燥機に入れ、５０℃に加熱してキシレ
ンを除去する。この粒子を冷却した後、２．８８mm目の
篩と１mm目の篩でふるい、１〜２．８８mmの粒子を負極
活物質５２とする。150 g of particulate graphite (acetylene black, Ketjen black) was placed in a Henschel mixer having an internal volume of 10 liters, and stirred at 1000 rpm for about 3 minutes to sufficiently disperse the particulate graphite. To this, 2500 g of hydrogen storage alloy powder for batteries, carbon fiber (trade name: Dona S-24
Add 100 g of 7) and mix for about 3 minutes at 1000 rpm. Separately, 150 g of ethylene vinyl acetate copolymer is added to 1000 g of xylene heated to 60 ° C. and dissolved. A resin dissolved in heated xylene is added to the mixture of the hydrogen storage alloy powder and the conductive filler heated to 60 ° C., and the mixture is stirred with a Henschel mixer while being heated and maintained at 60 ° C. Next, the Henschel mixer is cooled with stirring, and the kneaded product is cooled and ground to give a powder. This powder is put into a high speed mixer, and the particle size of the granulated particles is adjusted with a chopper while stirring the whole powder with an agitator.
The high speed mixer has a capacity of 2 liters, the agitator speed is 600 rpm, and the chopper speed is 150.
The temperature of the powder is raised from room temperature to 50 ° C. while stirring at 0 rpm under these conditions. After the granulated particles are generated, stirring is stopped while cooling. Since the particles contain xylene,
The particles are placed in a vacuum dryer and heated to 50 ° C. to remove xylene. After the particles are cooled, they are sieved through a 2.88 mm sieve and a 1 mm sieve, and the particles of 1 to 2.88 mm are used as the negative electrode active material 52.
【００２４】そして、一例として、図１１に示すような
中空糸にニッケルメッキしたものを不織布シートとした
ものである厚み２mmの中空糸状圧力吸収集電体５４を使
用する。中空糸状圧力吸収集電体５４を正極集電体１
８、負極集電体２０それぞれに配置し、セパレータ４８
を挟んで電池セル２２に上記の正極活物質５０、負極活
物質５２を充填して、電池として組み立てる。他の構成
及び作用は、実施の第１、第３、第４形態の場合と同様
である。As an example, a hollow fiber pressure absorbing current collector 54 having a thickness of 2 mm, which is a nonwoven fabric sheet obtained by nickel-plating hollow fibers as shown in FIG. 11, is used. The hollow fiber pressure absorbing current collector 54 is replaced with the positive electrode current collector 1
8 and the negative electrode current collector 20 respectively, and the separator 48
The battery cell 22 is filled with the above-mentioned positive electrode active material 50 and negative electrode active material 52 with sandwiching therebetween, and assembled as a battery. Other configurations and actions are similar to those of the first, third and fourth embodiments.
【００２５】図１２、図１３は、本発明の実施の第７形
態による圧力吸収構造を備えた電池の一例を示してい
る。本実施の形態は、電子伝導性のある繊維状物質の表
面に電池活物質をつけたものを束ねるなどした基本ユニ
ットのみで電池を構成した場合で、電池セルの内側にゴ
ム製圧力吸収材を装填したものである。一例として、ニ
ッケル水素電池の場合、内容積１０リットルのヘンシェ
ルミキサーに粒子状黒鉛（アセチレンブラック、ケッチ
ェンブラック）を１５０g入れ、１０００rpmで約３分間
攪拌して粒子状黒鉛を十分に分散する。これに、電池用
水酸化ニッケル粉末を１０００g添加し、約３分間１０
００rpmで混合する。別途、６０℃に加熱したキシレン
２０００gにエチレン酢酸ビニルコーポリマーを３００g
添加し溶解させる。６０℃に加熱した前記の粒子状黒鉛
と水酸化ニッケル粉の混合物に、加熱キシレンに溶解し
た樹脂を添加し、６０℃に加熱保持しながらヘンシェル
ミキサーで攪拌し、分散する。これにカーボンファイバ
ーを浸漬し、引き上げる。そして、真空加熱炉により５
０℃で真空乾燥し、キシレンを気化させる。つぎに、Ｐ
ＥＳをＤＭＳＯに溶解させた樹脂液に上記のカーボンフ
ァイバーを浸漬して引き上げる。これを水に浸漬し、Ｄ
ＭＳＯを水で抽出しＰＥＳを固化することで多孔質膜と
する。このニッケル／水酸化ニッケルで表面をコート
し、さらに外側を多孔質膜でコートしたカーボンファイ
バーを正極として使用する。12 and 13 show an example of a battery having a pressure absorbing structure according to the seventh embodiment of the present invention. The present embodiment is a case where the battery is constituted only by the basic unit such as bundling one in which the battery active material is attached to the surface of the fibrous substance having electronic conductivity, and the rubber pressure absorbing material is provided inside the battery cell. It is loaded. As an example, in the case of a nickel hydrogen battery, 150 g of particulate graphite (acetylene black, Ketjen black) is placed in a Henschel mixer having an internal volume of 10 liters, and the particulate graphite is sufficiently dispersed by stirring at 1000 rpm for about 3 minutes. To this, add 1000g of nickel hydroxide powder for battery, and apply for 10 minutes for 10 minutes.
Mix at 00 rpm. Separately, 300 g of ethylene vinyl acetate copolymer is added to 2000 g of xylene heated to 60 ° C.
Add and dissolve. A resin dissolved in heated xylene is added to the mixture of the particulate graphite and the nickel hydroxide powder heated to 60 ° C., and the mixture is stirred and dispersed with a Henschel mixer while being heated and maintained at 60 ° C. The carbon fiber is dipped in this and pulled up. And 5 by the vacuum heating furnace
Vacuum dry at 0 ° C. to evaporate xylene. Next, P
The carbon fiber is immersed in a resin solution prepared by dissolving ES in DMSO and pulled up. Dip this in water, D
MSO is extracted with water and PES is solidified to form a porous film. A carbon fiber whose surface is coated with this nickel / nickel hydroxide and whose outside is coated with a porous film is used as a positive electrode.
【００２６】内容積１０リットルのヘンシェルミキサー
に粒子状黒鉛（アセチレンブラック、ケッチェンブラッ
ク）を１５０g入れ、１０００rpmで約３分間攪拌して粒
子状黒鉛を十分に分散する。これに、電池用水素吸蔵合
金粉末を１０００g添加し、約３分間１０００rpmで混合
する。別途、６０℃に加熱したキシレン２０００gにエ
チレン酢酸ビニルコーポリマーを３００g添加し溶解さ
せる。６０℃に加熱した前記の粒子状黒鉛と水素吸蔵合
金の混合物に、加熱キシレンに溶解した樹脂を添加し、
６０℃に加熱保持しながらヘンシェルミキサーで攪拌
し、分散する。これにカーボンファイバーを浸漬し、引
き上げる。そして、真空加熱炉により５０℃で真空乾燥
し、キシレンを気化させる。つぎに、ＰＥＳをＤＭＳＯ
に溶解させた樹脂液に上記のカーボンファイバーを浸漬
して引き上げる。これを水に浸漬し、ＤＭＳＯを水で抽
出しＰＥＳを固化することで多孔質膜とする。この水素
吸蔵合金で表面をコートし、さらに外側を多孔質膜でコ
ートしたカーボンファイバーを負極として使用する。150 g of particulate graphite (acetylene black, Ketjen black) was put into a Henschel mixer having an internal volume of 10 liters, and stirred at 1000 rpm for about 3 minutes to sufficiently disperse the particulate graphite. To this, 1000 g of hydrogen storage alloy powder for a battery is added and mixed at 1000 rpm for about 3 minutes. Separately, 300 g of ethylene vinyl acetate copolymer is added to 2000 g of xylene heated to 60 ° C. and dissolved. A resin dissolved in heated xylene was added to the mixture of the particulate graphite and the hydrogen storage alloy heated to 60 ° C.,
While heating and holding at 60 ° C., the mixture is stirred and dispersed by a Henschel mixer. The carbon fiber is dipped in this and pulled up. Then, it is vacuum dried at 50 ° C. in a vacuum heating furnace to vaporize xylene. Next, PES to DMSO
The above-mentioned carbon fiber is immersed in the resin solution dissolved in and pulled up. This is immersed in water, DMSO is extracted with water, and PES is solidified to form a porous film. A carbon fiber whose surface is coated with this hydrogen storage alloy and whose outside is coated with a porous film is used as a negative electrode.
【００２７】正極活物質を表面にコートしさらに外側を
多孔質膜でコートしたカーボンファイバー５６を、断面
が露出した一方の端を正極集電体側として位置を揃え、
他方の多孔質膜５８で被覆した端が負極集電体側となる
ように並べる。負極活物質を表面にコートしさらに外側
を多孔質膜でコートしたカーボンファイバー６０を、断
面が露出した一方の端を負極集電体側として位置を揃
え、他方の多孔質膜５８で被覆した端が正極集電体側と
なるように並べる。正極と負極はランダムに並べてもか
まわないが、交互に並べた方がより高性能な電池とな
る。また、正極、負極を織物として積層してもよい。予
め電池セル２２の内側にゴム製圧力吸収材６２を装入し
ておき、上記の層状のカーボンファイバーを電池セル２
２に充填して、層状のカーボンファイバーに対して直角
方向（垂直方向）から正極として使用するカーボンファ
イバー５６の断面側に正極集電体１８を押しつける。正
極集電体１８側が底面となるようにした状態で、電解液
を注入した後、反対側である、負極として使用するカー
ボンファイバー６０の断面側に負極集電体２０を押しつ
けて電池を完成させる。なお、図１３では、手前側の負
極集電体の図示を省略している。繊維状物質の表面に電
池活物質をつける方法としては、樹脂により固定する方
法だけでなく、電気分解による電解析出法、溶融メッ
キ、焼結する方法などが利用できる。本実施の形態で
は、圧力吸収材として、ゴムだけでなく、電子伝導性、
イオン伝導性ともに無い弾性物質が使用できる。他の構
成及び作用は、実施の第１〜第６形態の場合と同様であ
る。The carbon fiber 56 whose surface is coated with a positive electrode active material and whose outer side is coated with a porous film is aligned so that one end whose exposed section is exposed is the positive electrode current collector side.
The other porous film 58 is arranged so that the end covered with the porous film 58 is on the negative electrode current collector side. The carbon fiber 60 coated with the negative electrode active material on the surface and further coated with the porous film on the outer side is aligned so that one end having an exposed cross section is positioned as the negative electrode current collector side and the other end coated with the porous film 58 is Arrange them so that they are on the positive electrode current collector side. The positive electrode and the negative electrode may be arranged at random, but if they are arranged alternately, a higher performance battery is obtained. Further, the positive electrode and the negative electrode may be laminated as a woven fabric. The rubber-made pressure absorbing material 62 is previously charged inside the battery cell 22, and the above-mentioned layered carbon fiber is attached to the battery cell 2
2, and the positive electrode current collector 18 is pressed from the direction perpendicular to the layered carbon fiber (vertical direction) to the cross section side of the carbon fiber 56 used as the positive electrode. After injecting the electrolyte solution with the positive electrode current collector 18 side being the bottom surface, the negative electrode current collector 20 is pressed against the opposite side, that is, the cross section side of the carbon fiber 60 used as the negative electrode, to complete the battery. . In FIG. 13, the illustration of the negative electrode current collector on the front side is omitted. As a method of attaching the battery active material to the surface of the fibrous material, not only a method of fixing with a resin but also an electrolytic deposition method by electrolysis, a method of hot dipping, a method of sintering and the like can be used. In the present embodiment, as the pressure absorbing material, not only rubber but also electronic conductivity,
An elastic material having neither ionic conductivity can be used. Other configurations and operations are similar to those of the first to sixth embodiments.
【００２８】なお、本発明は上記の実施の形態に何ら限
定されるものではなく、実施の第１〜第７形態で説明し
た全ての種類の電池について、実施の第１〜第７形態の
それぞれの圧力吸収部材を任意に適用することが可能で
ある。It should be noted that the present invention is not limited to the above-described embodiments, and all types of batteries described in the first to seventh embodiments are described in each of the first to seventh embodiments. It is possible to arbitrarily apply the pressure absorbing member of.
【００２９】[0029]
【発明の効果】本発明は上記のように構成されているの
で、つぎのような効果を奏する。
（１） 集電体や隔壁、電池セル、セパレータなどの電
池構成部材に圧力を吸収する特性を持たせることによ
り、電池活物質の膨張・収縮が繰り返されることによる
電池の劣化が防止できるので、電池性能が安定するとと
もに、電池の耐久性が向上する。
（２） 圧力を吸収する特性を持たせた集電体や隔壁、
電池セル、セパレータなどは安価に製造できるので、電
池製造コストの低減が図れる。Since the present invention is configured as described above, it has the following effects. (1) By providing a battery constituent member such as a current collector, a partition wall, a battery cell, and a separator with a property of absorbing pressure, deterioration of the battery due to repeated expansion and contraction of the battery active material can be prevented. The battery performance is stable and the battery durability is improved. (2) Current collectors or partition walls that have the property of absorbing pressure,
Since battery cells, separators, etc. can be manufactured at low cost, the battery manufacturing cost can be reduced.
【図１】本発明の実施の第１形態による圧力吸収構造を
備えた電池の一例を示す模式図である。FIG. 1 is a schematic view showing an example of a battery provided with a pressure absorbing structure according to a first embodiment of the present invention.
【図２】本発明の実施の第２形態による圧力吸収構造を
備えた電池の一例を示す模式図である。FIG. 2 is a schematic diagram showing an example of a battery including a pressure absorbing structure according to a second embodiment of the present invention.
【図３】本発明の実施の第２形態における空気バネ式圧
力吸収隔壁の一例を示す模式図である。FIG. 3 is a schematic view showing an example of an air spring type pressure absorption partition in the second embodiment of the present invention.
【図４】本発明の実施の第３形態による圧力吸収構造を
備えた電池の一例を示す模式図である。FIG. 4 is a schematic diagram showing an example of a battery including a pressure absorbing structure according to a third embodiment of the present invention.
【図５】本発明の実施の第３形態におけるハニカム状圧
力吸収集電体の一例を示す模式図である。[Fig. 5] Fig. 5 is a schematic diagram showing an example of a honeycomb-shaped pressure absorption current collector in a third embodiment of the present invention.
【図６】本発明の実施の第４形態による圧力吸収構造を
備えた電池の一例を示す模式図である。FIG. 6 is a schematic diagram showing an example of a battery provided with a pressure absorbing structure according to a fourth embodiment of the present invention.
【図７】本発明の実施の第４形態におけるゴム球と空気
を充填した圧力吸収集電体の一例を示す模式図である。FIG. 7 is a schematic diagram showing an example of a pressure absorption current collector filled with rubber balls and air according to a fourth embodiment of the present invention.
【図８】本発明の実施の第５形態による圧力吸収構造を
備えた電池の一例を示す模式図である。FIG. 8 is a schematic diagram showing an example of a battery including a pressure absorbing structure according to a fifth embodiment of the present invention.
【図９】本発明の実施の第５形態における繊維状圧力吸
収集電体の一例を示す模式図である。FIG. 9 is a schematic diagram showing an example of a fibrous pressure absorption current collector according to a fifth embodiment of the present invention.
【図１０】本発明の実施の第６形態による圧力吸収構造
を備えた電池の一例を示す模式図である。FIG. 10 is a schematic diagram showing an example of a battery including a pressure absorbing structure according to a sixth embodiment of the present invention.
【図１１】本発明の実施の第６形態における中空糸状圧
力吸収集電体の一例を示す模式図である。FIG. 11 is a schematic view showing an example of a hollow fiber-shaped pressure absorption current collector according to the sixth embodiment of the present invention.
【図１２】本発明の実施の第７形態による圧力吸収構造
を備えた電池の一例を示す繊維の長手方向から見た模式
図である。FIG. 12 is a schematic view of an example of a battery provided with a pressure absorbing structure according to a seventh embodiment of the present invention, as seen from the longitudinal direction of the fiber.
【図１３】本発明の実施の第７形態による圧力吸収構造
を備えた電池の一例を示す繊維の横断面方向から見た模
式図である。FIG. 13 is a schematic view of an example of a battery provided with a pressure absorbing structure according to a seventh embodiment of the present invention, as seen from the cross-sectional direction of the fiber.
１０、２８、４２、５０ 正極活物質
１２、３０、４４、５２ 負極活物質
１４ プリーツ状セパレータ
１６ 波板状圧力吸収板
１８ 正極集電体
２０ 負極集電体
２２ 電池セル
２４ 基本ユニット
２６ 空気バネ式圧力吸収隔壁
３２ イオン通過型集電体
３４ 袋状セパレータ
３６ ハニカム状圧力吸収集電体
３８ 蛇腹状セパレータ
４０ 圧力吸収集電体
４６ 繊維状圧力吸収集電体
４８ セパレータ
５４ 中空糸状圧力吸収集電体
５６ 正極活物質を表面にコートしさらに外側を多孔質
膜でコートしたカーボンファイバー
５８ 多孔質膜
６０ 負極活物質を表面にコートしさらに外側を多孔質
膜でコートしたカーボンファイバー
６２ ゴム製圧力吸収材10, 28, 42, 50 Positive electrode active material 12, 30, 44, 52 Negative electrode active material 14 Pleated separator 16 Corrugated plate pressure absorbing plate 18 Positive electrode current collector 20 Negative electrode current collector 22 Battery cell 24 Basic unit 26 Air spring Type pressure absorption partition wall 32 Ion passage type current collector 34 Bag-shaped separator 36 Honeycomb pressure absorption current collector 38 Bellows-shaped separator 40 Pressure absorption current collector 46 Fibrous pressure absorption current collector 48 Separator 54 Hollow fiber pressure absorption current collector Body 56 Carbon fiber whose surface is coated with a positive electrode active material and whose outer side is coated with a porous film 58 Porous film 60 Carbon fiber whose surface is coated with a negative electrode active material and whose outer side is coated with a porous film 62 Rubber pressure absorption Material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西村 和也 兵庫県明石市川崎町１番１号 川崎重工業 株式会社明石工場内 (72)発明者 光田 進 大阪市中央区平野町四丁目１番２号 大阪 瓦斯株式会社内 Ｆターム(参考） 5H011 AA01 AA04 AA13 CC02 DD05 DD11 KK01 5H021 AA02 AA06 CC11 CC19 HH10 5H028 AA08 CC07 CC08 CC10 CC22 EE06 FF04 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kazuya Nishimura 1-1 Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Akashi Factory Co., Ltd. (72) Inventor Susumu Mitsuda 4-1-2 Hirano-cho, Chuo-ku, Osaka City, Osaka Gas Co., Ltd. F-term (reference) 5H011 AA01 AA04 AA13 CC02 DD05 DD11 KK01 5H021 AA02 AA06 CC11 CC19 HH10 5H028 AA08 CC07 CC08 CC10 CC22 EE06 FF04
Claims (18)
体と負極集電体の間に、セパレータを挟んで正極集電体
側に正極活物質の粒子又は成形体が充填され、負極集電
体側に負極活物質の粒子又は成形体が充填され、電池セ
ルに電解液を充填して構成されており、集電体、電池セ
ル及びセパレータの少なくともいずれかの電池構成部材
の一部又は全部が、圧力を吸収する特性を持たせた圧力
吸収部材であることを特徴とする圧力吸収構造を備えた
電池。1. A negative electrode current collector and a negative electrode current collector provided opposite to a battery cell are sandwiched with a separator, and the positive electrode current collector side is filled with particles or a molded product of a positive electrode active material. Particles or molded body of the negative electrode active material is filled on the side of the current collector, which is configured by filling the battery cell with the electrolytic solution, and a part or all of the battery constituent member of at least one of the current collector, the battery cell and the separator. Is a pressure absorbing member having a characteristic of absorbing pressure, wherein the battery has a pressure absorbing structure.
体と負極集電体の間に、蛇腹状のセパレータが交互に両
集電体に近接するように配置され、蛇腹状のセパレータ
と正極集電体で区画される空間に正極活物質が充填さ
れ、蛇腹状のセパレータと負極集電体で区画される空間
に負極活物質が充填されて、正極活物質と負極活物質と
がセパレータを挟んで交互に組み込まれ、電池セルに電
解液を充填して構成されており、集電体、電池セル及び
セパレータの少なくともいずれかの電池構成部材の一部
又は全部が、圧力を吸収する特性を持たせた圧力吸収部
材であることを特徴とする圧力吸収構造を備えた電池。2. A bellows-shaped separator is disposed between a positive electrode current collector and a negative electrode current collector, which are provided so as to face a battery cell, so that bellows-shaped separators are alternately arranged close to both current collectors. And a space defined by the positive electrode current collector is filled with the positive electrode active material, and a space defined by the bellows-shaped separator and the negative electrode current collector is filled with the negative electrode active material, so that the positive electrode active material and the negative electrode active material are The separators are alternately assembled with each other, and the battery cells are filled with an electrolytic solution. A part or all of the battery constituent members of the current collector, the battery cells, and the separator absorb pressure. A battery provided with a pressure absorbing structure, which is a pressure absorbing member having characteristics.
体と負極集電体の間に、正極活物質を少なくとも１辺が
開口した袋状セパレータに充填したものと、負極活物質
を少なくとも１辺が開口した袋状セパレータに充填した
ものとが、正極集電体側に正極活物質を充填した袋状セ
パレータの開口部が位置し、負極集電体側に負極活物質
を充填した袋状セパレータの開口部が位置するように交
互に重ね合わせて充填され、電池セルに電解液を充填し
て構成されており、集電体、電池セル及びセパレータの
少なくともいずれかの電池構成部材の一部又は全部が、
圧力を吸収する特性を持たせた圧力吸収部材であること
を特徴とする圧力吸収構造を備えた電池。3. A bag-shaped separator having a positive electrode active material filled in at least one side between a positive electrode current collector and a negative electrode current collector provided facing a battery cell, and a negative electrode active material. A bag-shaped separator in which at least one side is open means that the opening of the bag-shaped separator in which the positive electrode current collector side is filled with the positive electrode active material is located and the negative electrode current collector side is filled with the negative electrode active material. The separators are alternately superposed so that the openings are positioned and filled, and the battery cells are filled with an electrolytic solution. The current collector, the battery cells, and a part of at least one of the battery constituent members of the separator. Or all
A battery provided with a pressure absorbing structure, which is a pressure absorbing member having a characteristic of absorbing pressure.
体と負極集電体の間に、交互に両集電体に近接するよう
な形状のプリーツ状セパレータに一方から正極活物質を
充填し、他方から負極活物質を充填して、セパレータの
ひだで形成される空間に正極活物質と負極活物質とを交
互に配置したものが、正極集電体側に正極活物質が充填
された面が位置し、負極集電体側に負極活物質が充填さ
れた面が位置するように充填され、電池セルに電解液を
充填して構成されており、集電体、電池セル及びセパレ
ータの少なくともいずれかの電池構成部材の一部又は全
部が、圧力を吸収する特性を持たせた圧力吸収部材であ
ることを特徴とする圧力吸収構造を備えた電池。4. A positive electrode active material is provided from one side of a pleated separator having a shape such that the positive electrode current collector and the negative electrode current collector, which are provided so as to face the battery cell, are alternately adjacent to both current collectors. Filled, filled with the negative electrode active material from the other, alternately arranged the positive electrode active material and the negative electrode active material in the space formed by the folds of the separator, the positive electrode current collector side was filled with the positive electrode active material The surface is located, the negative electrode current collector side is filled so that the surface filled with the negative electrode active material is located, is configured by filling the battery cell with the electrolytic solution, at least the current collector, the battery cell and the separator. A battery provided with a pressure absorbing structure, wherein a part or all of any one of the battery constituent members is a pressure absorbing member having a characteristic of absorbing pressure.
の面がイオン通過型集電体で被覆されており、集電体、
イオン通過型集電体、電池セル及びセパレータの少なく
ともいずれかの電池構成部材の一部又は全部が、圧力を
吸収する特性を持たせた圧力吸収部材である請求項１〜
４のいずれかに記載の圧力吸収構造を備えた電池。5. The positive electrode active material and / or the negative electrode active material is coated on an arbitrary surface with an ion-passing current collector,
Part or all of the battery constituent member of at least one of the ion-passing current collector, the battery cell, and the separator is a pressure absorbing member having a characteristic of absorbing pressure.
A battery provided with the pressure absorbing structure according to any one of 4 above.
体と負極集電体の間に、正極活物質で表面をコートした
電子伝導性のある繊維状物質が正極集電体と接触し、負
極活物質で表面をコートした電子伝導性のある繊維状物
質が負極集電体と接触するように、正極として使用する
繊維状物質と負極として使用する繊維状物質とをセパレ
ータを挟んで並べるかもしくは織物として積層し、又は
正極として使用する繊維状物質の外表面が電子伝導性が
無くイオン伝導性のある物質で被覆されたものと、負極
として使用する繊維状物質の外表面が電子伝導性が無く
イオン伝導性のある物質で被覆されたものとを並べるか
もしくは織物として積層し、電池セルに電解液を充填し
て構成されており、集電体、電池セル及びセパレータの
少なくともいずれかの電池構成部材の一部又は全部が、
圧力を吸収する特性を持たせた圧力吸収部材であること
を特徴とする圧力吸収構造を備えた電池。6. A fibrous substance having an electron conductivity, the surface of which is coated with a positive electrode active material, contacts the positive electrode current collector between the positive electrode current collector and the negative electrode current collector provided facing the battery cell. Then, sandwich the separator between the fibrous material used as the positive electrode and the fibrous material used as the negative electrode so that the electron conductive fibrous material whose surface is coated with the negative electrode active material comes into contact with the negative electrode current collector. The fibrous substance used as the positive electrode is lined or laminated as a woven fabric, or the outer surface of the fibrous substance used as the positive electrode is coated with a substance having no electron conductivity and ion conductivity, and It is configured by arranging or laminating a non-conductive material coated with an ion conductive material or laminating it as a woven fabric, and filling a battery cell with an electrolytic solution, and at least one of a current collector, a battery cell and a separator. Or Some or all of the battery components of
A battery provided with a pressure absorbing structure, which is a pressure absorbing member having a characteristic of absorbing pressure.
構成される単セルを隔壁で隔てて積層していき高電圧と
したものであり、集電体、隔壁、電池セル及びセパレー
タの少なくともいずれかの電池構成部材の一部又は全部
が、圧力を吸収する特性を持たせた圧力吸収部材である
ことを特徴とする圧力吸収構造を備えた電池。7. A single cell composed of the battery according to any one of claims 1 to 6 is separated by a partition wall and stacked to obtain a high voltage. The current collector, the partition wall, the battery cell and the separator. A battery having a pressure absorbing structure, wherein at least one of the battery constituent members is a pressure absorbing member having a characteristic of absorbing pressure.
気バネ式又は板バネ状の部材である請求項１〜７のいず
れかに記載の圧力吸収構造を備えた電池。8. The battery provided with the pressure absorbing structure according to claim 1, wherein the pressure absorbing member is an air spring type or leaf spring-shaped member having a space inside.
るハニカム構造状の部材である請求項１〜７のいずれか
に記載の圧力吸収構造を備えた電池。9. The battery provided with the pressure absorbing structure according to claim 1, wherein the pressure absorbing member is a member having a honeycomb structure having a large number of closed chambers.
質を少なくとも１種類充填した部材である請求項１〜７
のいずれかに記載の圧力吸収構造を備えた電池。10. The pressure absorbing member is a member having at least one elastic substance filled therein.
A battery provided with the pressure absorbing structure according to any one of 1.
のある物質を少なくとも１種類充填した部材である請求
項１〜７のいずれかに記載の圧力吸収構造を備えた電
池。11. The battery provided with the pressure absorbing structure according to claim 1, wherein the pressure absorbing member is a member having at least one kind of air and an elastic substance filled therein.
なる部材である請求項１〜７のいずれかに記載の圧力吸
収構造を備えた電池。12. The battery provided with the pressure absorbing structure according to claim 1, wherein the pressure absorbing member is a member made of an elastic material.
中空糸状のものを成形した部材である請求項１〜７のい
ずれかに記載の圧力吸収構造を備えた電池。13. The battery provided with the pressure absorbing structure according to claim 1, wherein the pressure absorbing member is a member formed by molding a fibrous, foamed or hollow fiber material.
工した部材、波板状の部材及びプリーツ状の面を有する
部材のいずれかである請求項１〜７のいずれかに記載の
圧力吸収構造を備えた電池。14. The pressure absorbing structure according to claim 1, wherein the pressure absorbing member is any one of a member whose surface is dimple-processed, a corrugated plate-shaped member and a member having a pleat-shaped surface. Battery equipped.
間、活物質と電池セルの間、及び活物質とセパレータの
間の少なくともいずれかの箇所に、圧力吸収部材を装入
して電池構成部材に圧力を吸収する特性を持たせるよう
にした請求項１〜１４のいずれかに記載の圧力吸収構造
を備えた電池。15. A pressure absorbing member is provided at least at any position between the active material and the current collector, between the active material and the partition wall, between the active material and the battery cell, and between the active material and the separator. A battery provided with the pressure absorbing structure according to any one of claims 1 to 14, wherein the battery constituent member has a characteristic of absorbing pressure.
オン通過型集電体、及び集電体や隔壁と活物質の間に装
入される部材の少なくともいずれかの表面に、耐アルカ
リ性の金属メッキを施した請求項１〜１５のいずれかに
記載の圧力吸収構造を備えた電池。16. Alkali resistance is provided on at least one surface of a current collector that is a pressure absorbing member, a partition wall, an ion passage type current collector, and a member inserted between the current collector or partition wall and the active material. A battery provided with the pressure-absorbing structure according to any one of claims 1 to 15, wherein the metal plating is applied.
池セルと活物質の間に装入される部材の表面に、耐アル
カリ性で非導電性の樹脂をコーティングした請求項１〜
１５のいずれかに記載の圧力吸収構造を備えた電池。17. The surface of the battery cell, which is a pressure absorbing member, or the member inserted between the battery cell and the active material, is coated with an alkali-resistant and non-conductive resin.
A battery comprising the pressure absorbing structure according to any one of 15.
セパレータと活物質の間に装入される部材の表面に、耐
アルカリ性で非導電性の多孔性樹脂をコーティングした
請求項１〜１５のいずれかに記載の圧力吸収構造を備え
た電池。18. The alkali-resisting, non-conductive porous resin is coated on the surface of the separator, which is a pressure absorbing member, or the member inserted between the separator and the active material. A battery provided with the pressure absorption structure according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002122522A JP4499976B2 (en) | 2002-04-24 | 2002-04-24 | Battery with pressure absorption structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002122522A JP4499976B2 (en) | 2002-04-24 | 2002-04-24 | Battery with pressure absorption structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003317795A true JP2003317795A (en) | 2003-11-07 |
| JP4499976B2 JP4499976B2 (en) | 2010-07-14 |
Family
ID=29538112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002122522A Expired - Fee Related JP4499976B2 (en) | 2002-04-24 | 2002-04-24 | Battery with pressure absorption structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4499976B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007165698A (en) * | 2005-12-15 | 2007-06-28 | Mitsubishi Electric Corp | Electric power storage device |
| JP2007220841A (en) * | 2006-02-16 | 2007-08-30 | Mitsubishi Electric Corp | Electric double layer capacitor |
| JP2010177116A (en) * | 2009-01-30 | 2010-08-12 | Kawasaki Heavy Ind Ltd | Sealed square battery and assembly method of sealed square battery |
| JP2011150913A (en) * | 2010-01-22 | 2011-08-04 | Kawasaki Heavy Ind Ltd | Laminated battery |
| US8158278B2 (en) * | 2008-04-11 | 2012-04-17 | Kawasaki Jukogyo Kabushiki Kaisha | Sealed battery having rectangular frame member and battery module using same |
| KR101255250B1 (en) * | 2012-03-23 | 2013-04-16 | 삼성에스디아이 주식회사 | Battery module |
| JP2013206622A (en) * | 2012-03-27 | 2013-10-07 | Kawasaki Heavy Ind Ltd | Battery having sheet-like fiber positive electrode, method for manufacturing the same, and positive electrode |
| CN103928730A (en) * | 2012-11-20 | 2014-07-16 | 通用汽车环球科技运作有限责任公司 | Stackable Cartridge Module Design |
| JP2017054712A (en) * | 2015-09-10 | 2017-03-16 | 三洋化成工業株式会社 | Lithium ion battery |
| CN110582882A (en) * | 2017-06-02 | 2019-12-17 | 株式会社村田制作所 | Battery manufacturing apparatus |
| JP7431072B2 (en) | 2020-03-18 | 2024-02-14 | Fdk株式会社 | Square batteries and electrode groups for square batteries |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426030U (en) * | 1977-07-25 | 1979-02-20 | ||
| JPS62140671U (en) * | 1986-02-28 | 1987-09-04 | ||
| JPH08298124A (en) * | 1995-01-18 | 1996-11-12 | Matsushita Electric Ind Co Ltd | Electrode for storage battery and manufacture thereof |
| JPH09274935A (en) * | 1996-04-05 | 1997-10-21 | Sony Corp | Lithium ion secondary battery |
| JPH11339755A (en) * | 1998-04-10 | 1999-12-10 | Johns Manville Internatl Inc | Storage battery having surrounded type electrode plate |
| JP2001511592A (en) * | 1997-07-25 | 2001-08-14 | ミネソタ マイニング アンド マニュファクチュアリング カンパニー | Pressure system and rechargeable thin film electrochemical cell |
-
2002
- 2002-04-24 JP JP2002122522A patent/JP4499976B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5426030U (en) * | 1977-07-25 | 1979-02-20 | ||
| JPS62140671U (en) * | 1986-02-28 | 1987-09-04 | ||
| JPH08298124A (en) * | 1995-01-18 | 1996-11-12 | Matsushita Electric Ind Co Ltd | Electrode for storage battery and manufacture thereof |
| JPH09274935A (en) * | 1996-04-05 | 1997-10-21 | Sony Corp | Lithium ion secondary battery |
| JP2001511592A (en) * | 1997-07-25 | 2001-08-14 | ミネソタ マイニング アンド マニュファクチュアリング カンパニー | Pressure system and rechargeable thin film electrochemical cell |
| JPH11339755A (en) * | 1998-04-10 | 1999-12-10 | Johns Manville Internatl Inc | Storage battery having surrounded type electrode plate |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007165698A (en) * | 2005-12-15 | 2007-06-28 | Mitsubishi Electric Corp | Electric power storage device |
| JP4593493B2 (en) * | 2006-02-16 | 2010-12-08 | 三菱電機株式会社 | Electric double layer capacitor |
| JP2007220841A (en) * | 2006-02-16 | 2007-08-30 | Mitsubishi Electric Corp | Electric double layer capacitor |
| US20120177958A1 (en) * | 2008-04-11 | 2012-07-12 | Kazuo Tsutsumi | Sealed battery to withstand internal pressures and battery module using same |
| US8158278B2 (en) * | 2008-04-11 | 2012-04-17 | Kawasaki Jukogyo Kabushiki Kaisha | Sealed battery having rectangular frame member and battery module using same |
| US8574750B2 (en) | 2008-04-11 | 2013-11-05 | Kawasaki Jukogyo Kabushiki Kaisha | Sealed battery to withstand internal pressures and battery module using same |
| JP2010177116A (en) * | 2009-01-30 | 2010-08-12 | Kawasaki Heavy Ind Ltd | Sealed square battery and assembly method of sealed square battery |
| JP2011150913A (en) * | 2010-01-22 | 2011-08-04 | Kawasaki Heavy Ind Ltd | Laminated battery |
| KR101255250B1 (en) * | 2012-03-23 | 2013-04-16 | 삼성에스디아이 주식회사 | Battery module |
| US9324982B2 (en) | 2012-03-23 | 2016-04-26 | Samsung Sdi Co., Ltd. | Battery module |
| JP2013206622A (en) * | 2012-03-27 | 2013-10-07 | Kawasaki Heavy Ind Ltd | Battery having sheet-like fiber positive electrode, method for manufacturing the same, and positive electrode |
| CN103928730A (en) * | 2012-11-20 | 2014-07-16 | 通用汽车环球科技运作有限责任公司 | Stackable Cartridge Module Design |
| JP2017054712A (en) * | 2015-09-10 | 2017-03-16 | 三洋化成工業株式会社 | Lithium ion battery |
| CN110582882A (en) * | 2017-06-02 | 2019-12-17 | 株式会社村田制作所 | Battery manufacturing apparatus |
| JP7431072B2 (en) | 2020-03-18 | 2024-02-14 | Fdk株式会社 | Square batteries and electrode groups for square batteries |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4499976B2 (en) | 2010-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100658255B1 (en) | High performance type three-dimensional cell | |
| JP5736476B2 (en) | Dish-shaped pressure equalizing electrode for electrochemical cells | |
| RU2298264C2 (en) | Bipolar electrochemical battery of stacked flat galvanic cells | |
| US9350006B2 (en) | Electrode assembly and electrochemical device including the same | |
| KR101611017B1 (en) | Collector for secondary battery, and secondary battery using same | |
| US20100203384A1 (en) | Electrode folds for energy storage devices | |
| US9147870B2 (en) | Rechargeable battery | |
| CN113258033B (en) | Nonaqueous electrolyte secondary battery and secondary battery assembly | |
| WO1997026682A1 (en) | Battery container, battery, and layer-built battery | |
| JP2003317794A (en) | Fiber cell and its manufacturing method | |
| KR20120062935A (en) | Negative electrode for lithium secondary battery, method for preparing the negative electrode, lithium secondary battery having the negative electrode, and vehicle having the lithium secondary battery | |
| BR112012012049A2 (en) | current collector for bipolar secondary battery. | |
| JP2013539171A (en) | Bipolar electrochemical cell with improved casing | |
| JP2003317795A (en) | Battery provided with pressure absorbing structure | |
| KR20140009037A (en) | Electrode assembly and electrochemical cell containing the same | |
| JP2008311173A (en) | Electric storage device | |
| JP7108052B2 (en) | Storage element and method for manufacturing storage element | |
| JP6865379B2 (en) | Non-aqueous electrolyte secondary battery and battery module | |
| US9553302B2 (en) | Electrode assemblage and rechargeable battery using the same | |
| JP3672880B2 (en) | Battery using pleated separator, pleated separator for battery, and manufacturing method thereof | |
| JP7487857B2 (en) | Pressurizing jig and method for manufacturing secondary battery using same | |
| WO2021065420A1 (en) | Battery pack | |
| JP7054479B2 (en) | Power storage element | |
| JP7170576B2 (en) | ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING ELECTROCHEMICAL DEVICE | |
| US20230104739A1 (en) | Nonaqueous electrolyte secondary cell and secondary cell module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050218 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070214 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070619 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070801 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090303 |
|
| A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20090413 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090430 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100413 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100416 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130423 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130423 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140423 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150423 Year of fee payment: 5 |
|
| LAPS | Cancellation because of no payment of annual fees |