Charge-discharge control circuit

A charge-discharge control circuit for charging and discharging a capacitor unit that includes a plurality of capacitors that are connected to each other in series, the charge-discharge control circuit comprising:

• a discharging control circuit that controls discharging of each of the capacitors separately;
• and
• a charging control circuit that controls charging of the capacitor unit with respect to all of the capacitors at once,
• wherein the charging control circuit includes:
• a switch element that is inserted into a charging path leading to the capacitor unit;
• and
• a switch control part that controls opening and closing of the switch element,
• the switch control part includes:
• a first voltage divider circuit that includes a pair of resistor elements, and produces and outputs a voltage that is a fraction of a voltage held by the capacitor unit:
• and
• a comparison result output circuit that controls opening and closing of the switch element based on a result of comparing a potential output from the first voltage divider circuit and a predetermined potential, and
• the pair of resistor elements are different from each other in terms of temperature dependency of resistance values thereof.