Abstract:
A controller switches between modes each having a different connection state of a DC power supply and the capacitor with respect to first and second output points by controlling switches. A generation unit generates a reference wave including at least one carrier wave. The modes are classified into a sustaining mode in which no current is caused to flow to the capacitor, a charging mode in which a current is caused to flow to the capacitor, and a discharging mode in which a current in a direction opposite to that in the charging mode is caused to flow to the capacitor. The controller switches between the sustaining mode and a charging or discharging mode according to the comparison result between a signal wave and the reference wave.
Abstract:
A first bidirectional switch is electrically connected between a first connection point which is a connection point of a first switching element and a second switching element and a second connection point which is a connection point of a seventh switching element and an eighth switching element. A second bidirectional switch is electrically connected between a third connection point which is a connection point of a third switching element and a fourth switching element and a fourth connection point which is a connection point of a fifth switching element and a sixth switching element. A power-converting device is configured to generate an output voltage between a first output point and a second output point.
Abstract:
A first voltmeter measures a voltage of a connector held by a holder of a vehicle power device. A second voltmeter measures a voltage of a second port of a power converter. when the connector is held by the holder. A controller detects presence or absence of a malfunction in a connector-side switch based on: measurement results of the voltmeters while controlling the connector-side switch so that electrical connection between the second port and the connector is broken; and measurement results of the voltmeters while controlling the connector-side switch so that the electrical connection is made.
Abstract:
A vehicle storage battery management device includes a charge level acquiring portion, a power capacity acquiring portion and, a power capacity deriving portion. The charge level acquiring portion acquires data of a charge level, which indicates a ratio of a capacity of a storage battery installed in an electric drive vehicle to a full charge capacity of the storage battery, from the electric drive vehicle. The power capacity acquiring portion acquires data of an amount of charging power supplied to the storage battery or data of an amount of discharging power discharged from the storage battery. The power capacity deriving portion derives a unit capacity of the storage battery based on the amount of charging power or the amount of discharging power, and a change in the charge level that occurs according to the amount of charging power or the amount of discharging power.
Abstract:
The electric vehicular connector includes: a connection terminal block including a primary power transmission terminal to be electrically connected to a first power terminal of a power converter; a plug including a secondary power transmission terminal to be electrically connected to a second power terminal of an inlet of an electric vehicle; a breaker which is connected between the primary power transmission terminal and the secondary power transmission terminal and has a closed state of electrically interconnecting the primary power transmission terminal and the secondary power transmission terminal and an open state of electrically separating the primary power transmission terminal and the secondary power transmission terminal from each other; and a breaker controller configured to set the connector-side breaker in the closed state during a normal state and to set the connector-side breaker in the open state during an abnormal state in which abnormality occurs in the electric vehicle.