Particle feeding apparatus for electrochemical power source...

H - Electricity – 01 – M

Patent

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Details

H01M 12/06 (2006.01) H01M 2/36 (2006.01) H01M 2/40 (2006.01) H01M 6/50 (2006.01) H01M 8/04 (2006.01) H01M 8/22 (2006.01)

Patent

CA 2379706

A novel fuel particle feeding mechanism that significantly improves operation of a refuelable electrochemical power source is provided. One embodiment of the mechanism provides an input of electrolyte and electrochemically active particles into one or more electrochemical cells through a feed tube. The feed tube has several embodiments that improve the flow of electrolyte and particles, and the even and complete settling of particles into individual cell cavities. Each cell cavity is completely filled, evenly and without clogging when open, and fluid communication between cell cavities is completely cut off when closed, to prevent short-circuiting of the power source during discharge or standby. Means are provided to prevent clogging of the feed tube with fuel particles, to promote complete filling of the cell cavities with fuel, and to prevent fuel particles from prematurely flowing out of the cell cavities. A method of operation is also described.

L'invention porte sur un nouveau mécanisme d'alimentation en particules de combustible améliorant notablement le fonctionnement des sources électrochimiques de courant. Dans l'une des exécutions le mécanisme comporte une entrée d'électrolyte et de particules de combustible électrochimiquement actives passant par un tube d'alimentation. Il existe plusieurs variantes dudit tube améliorant le flux d'électrolyte et de particules et le dépôt régulier et complet des particules dans les différentes cavités de la cellule, qui sont toutes entièrement et régulièrement remplie sans risque de colmatage lorsqu'elles sont ouvertes, et interruption totale des communications entre les cavités lorsqu'elles sont fermées, de manière à empêcher de court-circuiter la source de courant pendant la décharge ou l'attente. On a par ailleurs prévu des moyens d'empêcher le colmatage des tubes d'alimentation par les particules pour en assurer le remplissage complet en combustible et empêcher les particules de s'échapper prématurément des cavités. L'invention porte également sur un procédé d'exploitation associé.

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