CELL FRAME FOR ELECTROLYTE CIRCULATION BATTERY, CELL STACK FOR ELECTROLYTE CIRCULATION BATTERY, AND ELECTROLYTE CIRCULATION BATTERY

• Main Authors: KANNO TAKESHI, ITOU TAKEFUMI, SHIRAKI KOSUKE, HAYASHI KIYOAKI, YAMAGUCHI HIDEYUKI, YAMANISHI KATSUYA, KUWABARA MASAHIRO, FUJITA ISATO, TOYODA HARUHISA
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a cell frame for electrolyte circulation battery excellent in assembly workability in which sealant is hard to be damaged, and to provide a cell stack for electrolyte circulation battery, and an electrolyte circulation battery.SOLUTION: A cell frame for electrolyte circulation battery includes a bipolar plate, a frame having inner peripheral edge placed oppositely to the outer peripheral edge of the bipolar plate, and an annular sealant interposed between the outer peripheral edge of the bipolar plate and the inner peripheral edge of the frame, and used while being pressed by the bipolar plate and the frame. In the cross-section of the sealant when not pressed, the sealant includes a plate side contact coming into point contact with the bipolar plate, and a frame side contact coming into point contact with the frame. Assuming the maximum height of the bipolar plate in the direction sandwiched by the outer peripheral edge of the bipolar plate and the inner peripheral edge of the frame is H, and the maximum width in the direction orthogonal to the height direction is W, the ratio W/H of the width W to the height H exceeds 1.SELECTED DRAWING: Figure 1 【課題】組立作業性に優れる上にシール材が損傷し難い電解液流通型電池用セルフレーム、電解液流通型電池用セルスタック、及び電解液流通型電池を提供する。【解決手段】双極板と、前記双極板の外周縁部に対向配置される内周縁部を有する枠体と、前記双極板の外周縁部と前記枠体の内周縁部との間に介在され、前記双極板と前記枠体とに押圧された状態で使用される環状のシール材とを備え、前記シール材は、押圧されていない状態での横断面において、前記双極板に点接触する板側接点、及び前記枠体に点接触する枠側接点とを備え、前記双極板の外周縁部と前記枠体の内周縁部とに挟まれる方向の最大寸法を高さＨ、この高さ方向に直交する方向の最大寸法を幅Ｗとするとき、前記高さＨに対する幅Ｗの比Ｗ／Ｈが１超を満たす形状である電解液流通型電池用セルフレーム。【選択図】図１