Abstract: A charging system includes: an inverter including a direct current positive end, a direct current negative end, and alternating current ends, the direct current positive end and the direct current negative end being connected to a battery; a motor including N stator coils each having a first end connected to a corresponding one of the alternating current ends and a second end connected to a neutral point; a power receiving terminal including a power receiving positive end and a power receiving negative end, the power receiving negative end being connected to a battery negative end of the battery; and a charging switch configured to connect the first end of each of one or more and less than N of the stator coils to the power receiving positive end.

Abstract: A charging system includes a motor, first/second inverters, a neutral point switching element, a power receiving terminal, a circuit selector, and a controller. The motor includes a plurality of stator coils. First ends of the stator coils are connected to the first inverter, and second ends of the stator coils are connected to the second inverter. The neutral point switching elements interconnect the second ends of the stator coils at neutral points. An external power source is connected to the power receiving terminal. The circuit selector switches a connection relationship between the first/second inverters, the power receiving terminal, and the neutral point. The controller controls the circuit selector so that a current flows from the external power source to the stator coil through the switching element having a small accumulated stress among the switching elements of the first/second inverters and the neutral point switching element.

Abstract: A charging system includes: a motor including a plurality of stator coils; a power receiving terminal including a power receiving positive end and a power receiving negative end, the power receiving negative end being connected to a battery negative end, and the power receiving positive end being connected to a neutral point of the motor; a capacitor; an inverter; a plurality of neutral point switching elements each of which connects a second end of a corresponding one of the stator coils to the neutral point; and a plurality of diodes, an anode of each of the diodes being connected to the power receiving negative end, and a cathode of each of the diodes being connected to the second end of a corresponding one of the stator coils.

Abstract: When an abnormality of one of current sensors corresponding to a plurality of phases is detected during charging, a control device of a vehicle power source device configured to execute a ripple restraining control to continue the charging while controlling switching elements in remaining normal phases of the plurality of phases such that a ripple current to be generated by operation of the switching elements in the normal phases does not exceed a ripple current threshold. The ripple current threshold corresponds to an allowable value of the ripple current to be generated by operation of the switching elements in the plurality of phases when there is no abnormality in any of the current sensors corresponding to the plurality of phases.

Abstract: A vehicle power supply device applied to a vehicle including an electric motor including coils for a plurality of phases. The vehicle power supply device includes: a battery; a power conversion device including, for each of phases of the electric motor, a switching element and a current sensor; and a control device configured to control the power conversion device such that electric power supplied via a neutral point of the electric motor is stepped up and then supplied to the battery, execute a feedback control to control currents of the respective phases such that an input current from the external power supply and an output current to the battery are equal, set an upper limit of the currents of the respective phases based on a maximum value of the input current, and limit the currents of the respective phases so as not to exceed the set upper limit value.

Abstract: When an abnormality of one of current sensors corresponding to a plurality of phases is detected during charging, a control device of a vehicle power source device configured to execute a ripple restraining control to continue the charging while controlling switching elements in remaining normal phases of the plurality of phases such that a ripple current to be generated by operation of the switching elements in the normal phases does not exceed a ripple current threshold. The ripple current threshold corresponds to an allowable value of the ripple current to be generated by operation of the switching elements in the plurality of phases when there is no abnormality in any of the current sensors corresponding to the plurality of phases.

Abstract: A vehicle in one exemplary embodiment of the present invention includes a power control unit, a first control unit, and a second control unit. The first control unit further acquires collision prediction information indicating whether there is a possibility that the vehicle will collide and executes the discharge control if (i) the collision information is received, (ii) an abnormality occurs in the communication with the second control unit and, the collision prediction information indicates that there is a possibility that the vehicle will collide, or (iii) a voltage of an auxiliary power supply becomes lower than a threshold voltage and, the collision prediction information indicates that there is a possibility that the vehicle will collide.

Abstract: A battery system for a vehicle includes an auxiliary battery, first electric loads electrically connected to the auxiliary battery through first relays, a first electronic control unit electrically connected to the auxiliary battery through a second relay, the first electronic control unit being configured to turn on and off at least the first relays and the second relay, and a collision detection device configured to transmit a collision detection signal to the first electronic control unit when detecting a collision of the vehicle. The first electronic control unit is configured to switch the first relays from on to off, while keeping the second relay turned on when receiving the collision detection signal.

Abstract: A battery system for a vehicle includes an auxiliary battery, first electric loads electrically connected to the auxiliary battery through first relays, a first electronic control unit electrically connected to the auxiliary battery through a second relay, the first electronic control unit being configured to turn on and off at least the first relays and the second relay, and a collision detection device configured to transmit a collision detection signal to the first electronic control unit when detecting a collision of the vehicle. The first electronic control unit is configured to switch the first relays from on to off, while keeping the second relay turned on when receiving the collision detection signal.

Abstract: A vehicle in one exemplary embodiment of the present invention includes a power control unit, a first control unit, and a second control unit. The first control unit further acquires collision prediction information indicating whether there is a possibility that the vehicle will collide and executes the discharge control if (i) the collision information is received, (ii) an abnormality occurs in the communication with the second control unit and, the collision prediction information indicates that there is a possibility that the vehicle will collide, or (iii) a voltage of an auxiliary power supply becomes lower than a threshold voltage and, the collision prediction information indicates that there is a possibility that the vehicle will collide.