Bipolar battery electrode

Details Bipolar battery electrode Bipolar battery electrode

H - Electricity

01

M

H01M 4/02 (2006.01) H01M 4/14 (2006.01) H01M 10/18 (2006.01)

Patent

CA 2118865

A bipolar battery comprising a plurality of bipolar electrodes stacked together, each bipolar electrode comprising a conductive septum having positive and negative active material on opposite faces thereof. Each electrode has a nonconductive frame formed thereabout, and a mesa-like lattice which is integral with the frame, overlays the faces of the septum and is defined by an annular shoulder formed between the border of the lattice and the frame. Discrete spacer frames interjacent the electrode frames separate the electrodes from each other and define a region thereabout for retaining the battery's electrolyte. The faces of the spacer include an annular recess contiguous an inner rim thereof which receives, in nesting fashion, the mesa-like lattices for interlocking the several frames together.

Cette invention concerne une batterie bipolaire comprenant une pluralité d'électrodes empilées, chaque électrode bipolaire comportant une couche support conductrice portant sur ses faces opposées une matière active positive et négative respectivement. Chaque électrode est placée dans un cadre périphérique non conducteur et comporte un treillis formant plateau faisant partie intégrale du cadre, superposé sur les faces de la couche support et définissant un épaulement annulaire entre le bord du treillis et le cadre. Des séparateurs sont intercalés entre chaque électrode contiguë et définissent une région où placer l'électrolyte de la batterie. Les faces des séparateurs comportent un creux annulaire, adjacent à leur bord intérieur, qui reçoit, en empilage, les treillis formant plateau pour interverrouiller plusieurs cadres ensemble.

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