Honda Motor Co., Ltd.

Keiichiro Homma

Shinichi Yokoyama

Jun Kudo

Yusaku Amari

An on-vehicle system according to an aspect of the present invention includes: an acquisition part that acquires a signal indicating a voltage of a secondary battery which is mounted on a vehicle; an electric power supply part that uses electric power which is supplied from an external electric power supply device and that supplies the electric power to the secondary battery or an auxiliary machine mounted on the vehicle; and an output part that outputs a charge rate of the secondary battery based on the signal indicating the voltage of the secondary battery which is acquired by the acquisition part, wherein the electric power supply part controls output electric power such that stored electric power of the secondary battery is constant in a case where the vehicle stops and the charge rate of the secondary battery is output.

On-vehicle system, secondary battery management system, charge rate output method, and program

A control device that controls charging/discharging of a secondary battery mounted on a vehicle includes: a detection unit configured to detect start of deriving of a deterioration state of the secondary battery; and a control unit configured to control charging/discharging of the secondary battery such that a charging rate of the secondary battery is equal to or higher than a first predetermined value and equal to or lower than a second predetermined value in a state in which the vehicle is parked and is connected to an external power supply in a case in which start of deriving of the deterioration state has been detected by the detection unit.

Control device, diagnosis system, control method, and program

A management device manages transfer of electric power between an electric power system and a secondary battery that is mounted in a vehicle and stores electric power for travel. The management device includes an acquisition unit configured to acquire remaining performance of the secondary battery and information indicating a use period of the secondary battery, and a control unit configured to acquire two or more threshold values corresponding to period information based on a use period of the secondary battery from reference information in which two or more threshold values are associated with the period information based on the use period of the secondary battery, compare remaining performance of the secondary battery with each of the two or more acquired threshold values, and control transfer of electric power between the electric power system and the secondary battery on the basis of a result of the comparison.

Management device, management method, and program

A power storage device includes a storage battery capable of transferring electric power to and from an external electric power network, a receiver configured to receive an instruction related to transfer of the electric power, and a controller configured to control charge and discharge of the storage battery according to the instruction. The instruction includes a first instruction for requesting switching between short-term charge and discharge from the storage battery to the electric power network, and a second instruction for requesting continuous discharge from the storage battery to the electric power network. The instruction allowed by the controller varies depending on a variable representing a state of charge of the storage battery by a level of a value.

Power storage device, transport equipment, and control method

A power storage device includes a storage battery capable of transferring electric power to and from an external electric power network, and a controller configured to control charge and discharge of the storage battery according to an electric power request. The electric power request includes a first request for requesting switching between short-term charge and discharge from the storage battery to the electric power network, and a second request for requesting continuous discharge from the storage battery to the electric power network. The electric power request to be transmitted to the power storage device which is issued by a server device configured to manage the charge and discharge of the storage battery in the power storage device varies according to a variable representing a state of charge of the storage battery by a level of a value.

Server device and control method

A power transmission management apparatus includes a first connector electrically connectable to energy storages respectively provided in transportation units, a second connector electrically connectable to an external power system. A processor is configured to obtain charge state information, obtain power system request information to be input to or output from the external power system, control power transmission between the first connector and the second connector according to the power system request information, determine whether a degree of variation in the charging states in the energy storages is greater than or equal to a threshold value, and control power transmission between at least two among the energy storages to reduce the degree of variation before controlling the power transmission between the first connector and the second connector according to the power system request information if the degree of variation is determined to be greater than or equal to the threshold value.

Power transmission management apparatus and power transmission method

A charge and discharge control device includes a control unit which controls charging and discharging of a plurality of storage batteries capable of exchanging electric power via an external electrical grid; and an acquisition unit which acquires a temperature of each of the storage batteries. When there are at least two storage batteries having a temperature equal to or lower than a threshold value among the plurality of storage batteries, the control unit controls the two storage batteries to repeatedly perform charging and discharging in turn between the two storage batteries.

Charge and discharge control device

An energy storage system includes an energy storage provided in a transportation unit, a connector electrically connectable to an external power transmission management apparatus, a power transmission circuit, and a processor. The processor is configured to control the power transmission circuit in accordance with an output from the external power transmission management apparatus to perform power transmission between the energy storage and an external power system, and control the power transmission circuit in accordance with an output from the external power transmission management apparatus, if a degree of variation in charging states in the energy storage and one or more external energy storages is greater than or equal to a threshold value, to perform power transmission between the energy storage and the one or more external energy storages to reduce the degree of variation before performing the power transmission between the energy storage and the external power system.

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Wako, Japan

Keiichiro Homma