Battery-type power supply unit

摘要

A battery-type power supply unit includes a plurality of rod-shaped battery modules having a plurality of batteries connected together in series. Held tightly between two opposing ends of two batteries is an insulating ring having annular recesses into which these two ends can fit. Each battery module runs through and is supported by two plate-shaped members that are kept vertical on a base plate by frame members. Each plate-shaped member is an assembly of a plurality of grommets formed from two split halves. Connections between bus-bars and positive and negative electrodes of the battery modules can move toward and away from the positive and negative electrodes.