SECONDARY LOW-GAS-EMISSION CHEMICAL POWER SUPPLY Russian patent published in 2001 - IPC

FIELD: electrical engineering; secondary power supplies and electrochemical aqueous-electrolyte capacitors. SUBSTANCE: power supply (it may be nickel-cadmium, nickel-iron, nickel-metal-hydride, or lead storage cell) has its auxiliary electrode manufactured from material made of activated carbon fibers and placed between separator and negative electrode; it is mounted on negative-electrode surface; size of most pores of auxiliary electrode is greater than that of most separator pores. Auxiliary electrode may be made in the form of fabric or non- woven material, pressboard, or paper. It may be placed on one or both sides of negative-electrode plates. Total volume of electrolyte in pores of separator and electrodes is smaller than total volume of their pores. EFFECT: reduced gas-emission level in the course of charge; reduced electrolyte level check and replenishment intervals. 5 cl, 2 dwg