Nickel metal hydride storage battery
AssigneesPanasonic Corporation, Toyota Jidosha Kabushiki Kaisha
InventorsKatsunori Komori, Yoshiaki Ogata, Atsushi Adachi, Katsunori Maekawa, Noriyuki Fujioka
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Abstract
A nickel metal hydride storage battery included a battery case, and a group of electrode plates arranged in the battery case, wherein the battery case includes a battery case main body having a hole and a lid for closing the hole. The battery case includes a first portion made of a metal or a laminate of a metal and a resin, and a second portion made of a resin; and an area of the first portion is 20% or more and 90% or less with respect to the entire battery case. Thus, a nickel metal hydride storage battery is capable of controlling the amount of hydrogen permeating the battery case and capable of suppressing the long-term deterioration.
Claims13
A nickel metal hydride storage battery, comprising:
- a battery case;
- and
- a group of electrode plates arranged in the battery case, the electrode plates including a positive electrode plate comprising nickel hydroxide,
- wherein the battery case comprises outer wall members that define (a) a battery case main body having a hole and (b) a lid for closing the hole;
- the battery case comprises a first portion made of a metal or a laminate of a metal and a resin, and a second portion made of a resin without metal present;
- and
- an area of the outer wall members occupied by the first portion is 20% or more and 90% or less.
Dependencies are inferred from the claim text.