| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed nickel hydrogen battery with which the cycle service life can be remarkably improved more than usual without the use of a complicated process and a material. SOLUTION: In a sealed nickel hydrogen battery, a safety valve 4 is provided in an upper end part of a case 1, and an electrolyte-holding porous body 2 is arranged on a gas storage space side in the case 1. An injection quantity of an electrolyte is also filled by increasing the quantity by 5 to 40% more than normal, so as to become higher than an upper end surface of a plate. When the electrolyte is filled above the upper end surface of the plate in this way, the cycle service life of the sealed nickel hydrogen battery can be markedly prolonged. |
