CHARGING DEVICE FOR ELECTROLYTE

PROBLEM TO BE SOLVED: To charge electrolyte into a case which is filled with a group of electrodes immediately. SOLUTION: This charging device for electrolyte is provided with a blocking cylinder 5 for airtightly-blocking a case 1 where a group of electrodes are inserted, a decompression device which can decompress the inside of the case closed by a blocking cylinder 5 and raise pressure from the decompressed condition, a fluid supplying pipe 7 which supplies electrolyte fluid 3 to the opening of the case 1, a temporary storage chamber 8 for electrolyte which is communicated with the fluid supply pipe, a piston 9 which supplies electrolyte to the case through the fluid supply pipe by pushing out the electrolyte stored here, and a pressure mechanism which drives the piston. This charging device airtightly-closes the opening of the case 1, and drives the piston 9 with the case inside decompressed by the decompression device to supply electrolyte to the case 1 from the fluid supply pipe 7. The end of the fluid supply pipe is extended to a higher position than the fluid level of electrolyte, and the piston pushes up the fluid level and supplies fluid to the case.