Toyota Jidosha Kabushiki Kaisha

Denso Ten Limited

Kazuki Furuta

Koji Hokoi

Yoshihiro Uchida

Yoshimitsu Takahashi

Yu Nakao

Kazuto Roppongi

An ECU switches a control mode to an HV mode when an SOC decreases to a lower limit during an EV mode. The ECU calculates an evaluation value &#x3a3;D of high-rate deterioration indicating a deterioration component of a secondary battery due to non-uniformity in salt concentration in a battery. The ECU executes high-rate deterioration inhibiting control when the HV mode is currently selected and when the battery is evaluated as deteriorating based on the evaluation value &#x3a3;D, the high-rate deterioration inhibiting control being control for increasing the SOC by making a control target of the SOC higher than the lower limit of the SOC. On the other hand, the ECU does not execute the high-rate deterioration inhibiting control when the EV mode is currently selected.

Electric powered vehicle and control method for electric powered vehicle

A hybrid vehicle includes an engine, a motor generator, a battery, and an ECU (Electronic Control Unit). The ECU is configured to calculate an evaluation value indicating a degree of progress of deterioration of the battery, the deterioration being caused by an imbalance in a salt concentration in the battery, and is configured to execute a high-rate deterioration suppressing control that raises a target SOC (State of Charge) of the battery when the battery is evaluated to be deteriorated in accordance with the evaluation value. The ECU is configured to also raise the target SOC when an actual SOC is increased due to an electric power generation by the motor generator during the execution of the high-rate deterioration suppressing control. The raised target SOC is lower than the increased actual SOC.

Hybrid vehicle and method for controlling same

Growing community of inventors

Toyota, Japan

Kazuki Furuta