Honda Motor Co., Ltd.

Satoru Komoda

Naoki Maruno

Yoshikazu Nishida

Kazuaki Takizawa

Atsushi Shibutani

Yoshihiro Sunaga

Yoshikazu Ohnuma

Mutsuji Suzuki

It is intended to prevent degradation of battery cells (cells). A battery control apparatus obtains a cell voltage value of each of the cells () (S), calculates a cell SOC at each of the cells based on the measured cell voltage value (S), calculates an integrated current value (Ah) by integrating current values of a battery pack () configured with a plurality of the cells (), calculates a cell capacity value of each of the cells () based on the integrated current value and the cell SOC (S), calculates a dischargeable cell capacity value from the cell capacity value and the cell SOC (S), and controls charging/discharging of the battery pack () based on the dischargeable cell capacity value (S).

Battery control apparatus and battery control method

There is provided a charge controller capable of charging a capacitor while suppressing the progress of deterioration of the capacitor without unnecessary charge/discharge of the capacitor. The charge controller includes a voltage sensorthat detects the voltage of a capacitor, a current sensorthat detects the charge/discharge current of the capacitor, a battery ECUthat estimates the SOC of the capacitorbased on the detected voltage, and a management ECU. The management ECUcalculates the charge/discharge amount from the start of charging of the capacitorby integrating the charge/discharge currents detected by the current sensorand controls the charging of the capacitorbased on the estimated SOC and the calculated charge/discharge amount. The management ECUupdates and sets the estimated SOC to an actual use upper limit SOC based on the state characteristics of the capacitor

Charge controller

Growing community of inventors

Wako, Japan

Satoru Komoda