Hitachi, Ltd.

Kouichi Yokoura

Kenji Takeda

Takeshi Uchida

Motoo Futami

Shin Yamauchi

A relay () receives a battery information acquisition time from each battery module () and calculates measurement time differential information &#x394;t, that is, a time difference between the battery information acquisition time as a reference and the battery information acquisition time of another battery module () among the received battery information acquisition times, for each battery module (). A measurement time correction unit () of each battery module () corrects a measurement time by the measurement time differential information &#x394;t, using the measurement time differential information &#x394;t received from the relay () to adjust the battery information acquisition time of each battery module () to the same time.

Battery control system and battery control method

When detecting a fault of a master control device, a slave control device refers to master-device-line information, and obtains line information to establish a connection with the other master control device. The slave control device transmits connection request information to the master control device extracted from the other master control devices. The other master control device determines whether or not it is connectable with the slave control device that has transmitted the connection request information, and transmits a determination result as connectability information. The slave control device switches a communication line to the other master control device when the received connectability information indicates the connectable status.

Growing community of inventors

Kawasaki, Japan

Kouichi Yokoura