Honda Motor Co., Ltd.

Hajime Abe

Yuki Ito

Kenji Sato

Kazuhito Nakao

Naoya Okada

Hiroki Tsutsumi

Atsushi Tamai

The disclosure provides a battery temperature control device of an electric vehicle capable of efficiently heating a battery for vehicle driving while executing V2G in a low temperature environment. A battery temperature control device of an electric vehicle controls the temperature of a battery of the electric vehicle, and the electric vehicle participates in V2G which allows bidirectional power exchange between the battery for vehicle driving mounted on the electric vehicle and a power system. When an aggregator on the power system side starts execution of V2G by transmitting to an ECU a start instruction for the charge and discharge of the battery, the ECU controls a four-way valve to connect a battery cooling circuit and a charger cooling circuit when a battery temperature is less than a predetermined temperature.

Battery temperature control device of electric vehicle

A lithium ion battery control device includes an acquirer configured to acquire a determination index related to the degree of occlusion of a lithium ion battery in which a degree of occlusion of lithium ions occluded in graphite of a negative electrode changes in accordance with an amount of stored power, and a controller configured to perform control for causing the lithium ion battery to be charged with power or causing power of the lithium ion battery to be discharged so that the degree of occlusion is close to a degree of occlusion associated with a specific region when a region associated with the degree of occlusion is determined not to be the specific region associated with the degree of occlusion which includes LiChaving a degree of occlusion represented by a stoichiometric ratio and does not include LiChaving a degree of occlusion represented by a stoichiometric ratio.

Lithium ion battery control device, and lithium ion battery control method

A charging control device is equipped with a state of charge detection unit adapted to detect a state of charge of a secondary battery, a storage unit adapted to store a charging pattern in which the state of charge and a charging current are associated, and a charging control unit adapted to change the charging pattern in accordance with the state of charge of the secondary battery when charging is initiated, and to control the charging current in accordance with the charging pattern after having been changed.

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Wako, Japan

Hajime Abe