Charging and discharging device

A charging and discharging device comprising:

• a switching circuit, an input of which is connected to a power supply, the switching circuit adjusting an output current to a power storing unit connected to an output of the switching circuit;
• and
• a control unit configured to generate an ON/OFF signal to the switching circuit, wherein
• the control unit includes:
• a temperature-rise control unit configured to separately generate, based on at least a signal equivalent to temperature of the power storing unit, a first control signal for controlling a time varying component of the output current to be capable of raising the temperature of the power storing unit and a second control signal for adjusting a non-time varying component of the output current;
• and
• a PWM-pulse generating unit configured to generate the ON/OFF signal based on the first control signal and the second control signal and outputting the ON/OFF signal to the switching circuit.

A charging and discharging device mounted on an electric vehicle, the charging and discharging device comprising:

• a switching circuit, an input of which is connected to a power supply, the switching circuit adjusting an output current to a power storing unit connected to an output of the switching circuit;
• and
• a control unit configured to generate an ON/OFF signal to the switching circuit, wherein
• the control unit includes a temperature-rise control unit configured to generate, based on a signal equivalent to temperature of the power storing unit and a signal equivalent to speed of the electric vehicle, a control signal for adjusting a ripple component of the output current or a control signal for adjusting a time varying component of the output current, the control unit generating the ON/OFF signal based on the control signal and outputting the ON/OFF signal to the switching circuit.

A charging and discharging device comprising:

• a switching circuit, an input of which is connected to a power supply, the switching circuit adjusting an output current to a power storing unit connected to an output of the switching circuit;
• and
• a control unit configured to generate an ON/OFF signal to the switching circuit,
• the control unit including a temperature-rise control unit configured to output, based on a signal equivalent to temperature of the power storing unit, a control signal for controlling the temperature of the power storing unit, and the control unit generating the ON/OFF signal based on the control signal and outputting the ON/OFF signal to the switching circuit, wherein
• the power storing unit includes a plurality of banks formed by combining an arbitrary plurality of the power storage elements,
• opening and closing units capable of connecting and disconnecting the switching circuit are set between the respective banks and the switching circuit, and
• the control unit includes a temperature-rise selecting unit configured to output, to the opening and closing units, a selection control signal for connecting a predetermined one of the banks to the switching circuit and enabling temperature-rise control.