Abstract: There is provided an in-vehicle charger including a bidirectional AC/DC converter to which an AC power supply or an AC load is connected; a resonant isolated DC/DC converter to which the bidirectional AC/DC converter is connected; a voltage adjustment DC/DC converter to which the resonant isolated DC/DC converter is connected and to which a high-voltage battery is connected; and an intermediate voltage junction circuit that supplies DC power from between the resonant isolated DC/DC converter and the voltage adjustment DC/DC converter to an intermediate voltage load that operates at an intermediate voltage lower than a voltage of the high-voltage battery.

Abstract: A charger includes a rectifier including two input terminals for connection to an AC power supply, a cathode terminal and an anode terminal, a DC/DC converter including a first terminal be connected to the cathode terminal, a second terminal to be connected to the anode terminal, and two output terminals for connection to a battery, a power pulsation absorbing circuit including a first diode, a second diode, a third diode, an inductor, a capacitor, a first switch and a second switch, and a control section configured to control a switch of the DC/DC converter, the first switch and the second switch, wherein the control section is configured to control the DC/DC converter, the first switch and the second switch in such a way that a sum of a power outputted from the AC power supply and a power outputted from the capacitor is constant.

Abstract: A power conversion device includes an AC current sensor, an AC voltage sensor, a DC voltage sensor, and a control circuit. The control circuit includes an integration unit configured to integrate a difference between a predetermined overcurrent threshold and the output current detected by the AC current sensor and output an integration output, a multiplication unit configured to multiply the integration output outputted from the integration unit by the output voltage detected by the AC voltage sensor and output a multiplication output, a division unit configured to calculate and output a Duty ratio by dividing the multiplication output outputted from the multiplication unit by the DC voltage detected by the DC voltage sensor, and a voltage control unit configured to control the AC voltage according to the Duty ratio outputted from the division unit.

Abstract: A coupling inductor includes a core having a central section and an outer section, a first coil wound around the central section between a first end and a center portion of the central section, a second coil wound in a direction opposite to that of the first coil around the central section between the first end and the center portion of the central section, a third coil connected to the first coil and wound in a same direction as that of the first coil around the central section between a second end and the center portion of the central section, and a fourth coil connected to the second coil and wound around the central section between the second end and the center portion of the central section, wherein the fourth coil is wound in a direction opposite to the direction in which the first coil is wound.

Abstract: A bidirectional two-phase chopper circuit boosts a voltage of direct-current power converted by an AC/DC converter to output it to a high-voltage battery and steps down a voltage of direct-current power being supplied to a low-voltage load unit from the high-voltage battery. A connector is connected to a quick charger supplying direct-current power. A connector is connected to a superquick charger supplying direct-current power having a higher voltage than that of the quick charger.

Abstract: A coil component and an insulating bobbin are provided with a first insulating bobbin having a first flange portion, a first rib, and a pair of locking claw portions and a second insulating bobbin having a second flange portion, a second rib, and a pair of locking opening portions. The pair of locking claw portions and the pair of locking opening portions are locked in a state where both end portions of a coil winding portion in a coil axis direction are covered with the first and second flange portions and and the first and second ribs and are respectively fitted into first and second slits and of the coil winding portion. As a result, adequate insulation performance can be ensured and workability can be improved when a coil insulating member is assembled to the coil winding portion.

Abstract: An objective of the present invention is to miniaturize a connector for connecting an exchangeable battery to an electric vehicle. A power supply device includes a first battery which is exchangeable and includes a battery connector for connection to a moving object; a moving object connector disposed at the moving object and connectable to the battery connector; a first power converting section connected between the moving object connector and a load; a second battery connected to a power supply line in parallel to the first battery, wherein the power supply line is configured to connect the first power converting section to the load; and a control section which is configured to control the first power converting section in such a way that a current which is output from the first battery to the first power converting section via the moving object connector has a first value or a smaller value.

Abstract: A charger includes a rectifier including two input terminals for connection to an AC power supply, a cathode terminal and an anode terminal, a DC/DC converter including a first terminal be connected to the cathode terminal, a second terminal to be connected to the anode terminal, and two output terminals for connection to a battery, a power pulsation absorbing circuit including a first diode, a second diode, a third diode, an inductor, a capacitor, a first switch and a second switch, and a control section configured to control a switch of the DC/DC converter, the first switch and the second switch, wherein the control section is configured to control the DC/DC converter, the first switch and the second switch in such a way that a sum of a power outputted from the AC power supply and a power outputted from the capacitor is constant.

Abstract: A transformer device includes a transformer including a primary winding formed by winding a first conductor and a secondary winding provided to face the primary winding and formed by winding a second conductor, a first wire connected to the primary winding and drawn out to one side, a second wire connected to the secondary winding and drawn out to the same side as that of the first wire, a base material provided on the side from which the first wire and the second wire are drawn out, a primary circuit provided on the base material and connected to the primary winding via the first wire, and a secondary circuit provided on the base material and connected to the secondary winding via the second wire. With this configuration, the transformer device has an effect in that a structural waste can be suppressed.

Abstract: A bus bar includes: a fixing portion fixed to a fixing member; extending portions individually extending from the fixing portion; terminal portions extending from tips of the extending portions respectively and fixed and electrically connected to a substrate with the terminal portions inserted in terminal insertion holes of the substrate; and curved portions provided in the extending portions respectively.

Abstract: In a power supply device, a common power supply terminal has a shape connectable in common to a power supply terminal of a direct-current power supply installed outside a vehicle and a power supply terminal of an alternating-current power supply installed outside the vehicle. An AC power supply line connects the common power supply terminal and a battery through an AC/DC conversion unit. A DC power supply line connects the common power supply terminal and the battery not through the AC/DC conversion unit. A controller makes a switch to the DC power supply line when a power supply connected to the common power supply terminal is the direct-current power supply and makes a switch to the AC power supply line when the power supply connected to the common power supply terminal is the alternating-current power supply to charge the battery with power input to the common power supply terminal.

Abstract: A power conversion unit includes an AC/DC converter converting alternating-current power supplied from an AC power supply into direct-current power to charge a high-voltage battery with the direct-current power and a step-down DC/DC converter generating an intermediate voltage provided by stepping down a voltage of direct-current power supplied from the high-voltage battery. A constant-voltage DC/DC converter outputs, to a low-voltage load unit, direct-current power provided by stepping down the intermediate voltage of direct-current power output from the step-down DC/DC converter at a constant step-down ratio.

Abstract: A bus bar includes: a fixing portion fixed to a fixing member; extending portions individually extending from the fixing portion; terminal portions extending from tips of the extending portions respectively and fixed and electrically connected to a substrate with the terminal portions inserted in terminal insertion holes of the substrate; and curved portions provided in the extending portions respectively.

Abstract: A protector for an electricity supply circuit includes: a power switch for switching between connection and disconnection of the electricity supply circuit; a controller configured to output a switching command signal to the power switch in accordance with an input signal; and a current detector for detecting current flowing to the electricity supply circuit. The controller includes: a lower limit threshold determination unit configured to determine whether or not an estimated temperature of a power line has dropped below a lower limit threshold; a timer for counting the time that passes after a load has been turned off, when the load is turned off by the power switch; and a mode switching unit configured to switch the controller to a sleep mode when a predetermined time is counted by the timer and the lower limit threshold determination unit determines that the estimated temperature has dropped below the lower limit threshold.

Abstract: A bidirectional two-phase chopper circuit boosts a voltage of direct-current power converted by an AC/DC converter to output it to a high-voltage battery and steps down a voltage of direct-current power being supplied to a low-voltage load unit from the high-voltage battery. A connector is connected to a quick charger supplying direct-current power. A connector is connected to a superquick charger supplying direct-current power having a higher voltage than that of the quick charger.

Abstract: A power conversion unit includes an AC/DC converter converting alternating-current power supplied from an AC power supply into direct-current power to charge a high-voltage battery with the direct-current power and a step-down DC/DC converter generating an intermediate voltage provided by stepping down a voltage of direct-current power supplied from the high-voltage battery. A constant-voltage DC/DC converter outputs, to a low-voltage load unit, direct-current power provided by stepping down the intermediate voltage of direct-current power output from the step-down DC/DC converter at a constant step-down ratio.

Abstract: In a vehicle power supply device, a power conversion unit converts AC power supplied from an AC power supply into DC power to charge a high-voltage battery with the DC power. The power conversion unit outputs, to an electric air conditioner, DC power of an intermediate voltage provided by stepping down a voltage of DC power supplied from the high-voltage battery. A controller controls a changeover switch based on a detection result detected by a detection sensor.

Abstract: A transformer device includes a transformer including a primary winding formed by winding a first conductor and a secondary winding provided to face the primary winding and formed by winding a second conductor, a first wire connected to the primary winding and drawn out to one side, a second wire connected to the secondary winding and drawn out to the same side as that of the first wire, a base material provided on the side from which the first wire and the second wire are drawn out, a primary circuit provided on the base material and connected to the primary winding via the first wire, and a secondary circuit provided on the base material and connected to the secondary winding via the second wire. With this configuration, the transformer device has an effect in that a structural waste can be suppressed.

Abstract: A coil component and an insulating bobbin are provided with a first insulating bobbin having a first flange portion, a first rib, and a pair of locking claw portions and a second insulating bobbin having a second flange portion, a second rib, and a pair of locking opening portions. The pair of locking claw portions and the pair of locking opening portions are locked in a state where both end portions of a coil winding portion in a coil axis direction are covered with the first and second flange portions and and the first and second ribs and are respectively fitted into first and second slits and of the coil winding portion. As a result, adequate insulation performance can be ensured and workability can be improved when a coil insulating member is assembled to the coil winding portion.

Abstract: When an anomaly is determined in the transition of ECUs to a power saving state, a power supply control system sequentially turns on current supply switches while keeping a bypass switch on. A monitoring controller determines an anomaly in the transition of the ECUs to a power saving state on the basis of whether the dark current in the ECUs calculated from the amount of change at that time in the current in the power supply line is greater than an ordinary dark current. Further, in the startup state of the ECUs, power from a power supply can be supplied to the ECUs via the power supply line and individual supply lines.