| 摘要 |
PURPOSE:To decrease internal resistance of an alkaline cell immediately after its sealing, by injecting an alkaline electrolyte into a negative electrode under an atmosphere of specific humidity and sealing the cell within five minutes after injection of the electrolyte. CONSTITUTION:A negative electrode compound obtained by mixing zinc powder and viscosity increasing agent in a powdery state is firstly measured in a seal plate 1. Then this seal plate is placed under an atmosphere of 50-70% humidity to inject an alkaline electrolyte contained with 20-30wt% sodium hydroxide. After injection of the alkaline electrolyte, a positive electrode, separator and electrolyte impregnated material are assembled and combined in a case 1 injected with the electrolyte, and the opening end of a case 2 is internally curved to seal a cell constitutional element in the inside. The alkaline electrolyte contained with 20-30wt% sodium hydroxide causes a small change of concentration in a range of 50-70% humidity further is sealed within five minutes, then evaporation of water in the electrolyte is suppressed thus concentration of the electrolyte in a cell can be equalized. |
