Patent ID: 11942650
Assignee: NGK INSULATORS, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A battery module comprising:
a metal module housing that has a closed interior space; and
multiple secondary batteries that have a vertically long shape and are housed vertically in the interior space and juxtaposed parallel to each other,
wherein the module housing has an upper excess space above the secondary batteries in the interior space, the upper excess space being capable of mitigating a pressure increase in the module housing due to ignition of gas generated in the event of an abnormality in the secondary batteries, and
wherein the secondary battery is a zinc secondary battery including:
a stacked-cell battery in which multiple single cell elements having a configuration of an alkaline secondary battery are stacked, and
a box-shaped case made of resin in which the stacked-cell battery is housed vertically, and
wherein the secondary batteries further include, in top surfaces thereof, a pressure release valve capable of releasing gas from the secondary batteries at a predetermined working pressure or more, and
wherein the battery module further includes a metal plate provided in a direction in which the multiple secondary batteries are juxtaposed, so as to cover the pressure release valve of the multiple secondary batteries from above.