BATTERY PACK AND ELECTRIC VEHICLE

摘要

A battery pack comprises: a plurality of battery banks (BT); BMUs (21) for detecting the current flowing through each of the battery banks (BT) and detecting the voltages and temperatures of a plurality of battery cells; a terminal (TA1) connected to the positive electrode terminals of the battery banks (BT); another terminal (TA2) connected to the negative electrode terminals of the battery banks (BT1 to BT3); a plurality of still another terminals (TB1) connected to the respective positive electrode terminals of the battery banks (BT); still another terminal (TB2) connected to each of the negative electrode terminals of the battery banks (BT); a contactor (22) for connecting and disconnecting the positive electrode terminals of the battery banks (BT) and the terminal (TA1) and for connecting and disconnecting the negative electrode terminals of the battery banks (BT) and the terminal (TA2); another contactors (23A to 23C) for connecting and disconnecting each of the positive electrode terminals of the battery banks (BT) and the terminal (TA1); and still another contactors (25A to 25F) for connecting and disconnecting each of the positive electrode terminals of the battery banks (BT) and each of the terminals (TB1) and for connecting and disconnecting each of the negative electrode terminals of the battery banks (BT) and the terminal (TB2).