Power storage unit and solar power generation unit

A power storage unit comprising:

• a power storage device;
• a first transistor;
• a diode;
• a heater;
• a temperature sensor;
• and
• a resistor,
• wherein:
• a positive electrode of the power storage device is electrically connected to a drain of the first transistor and an anode of the diode;
• a negative electrode of the power storage device is electrically connected to a first terminal of the temperature sensor and a first terminal of the resistor;
• a second terminal of the resistor is electrically connected to a first terminal of the heater and a gate of the first transistor;
• and
• a second terminal of the heater is electrically connected to a source of the first transistor and a cathode of the diode.

A power storage unit comprising:

• a power storage device;
• a first transistor;
• a second transistor;
• a first diode;
• a second diode;
• a heater;
• and
• a temperature sensor;
• wherein:
• a positive electrode of the power storage device is electrically connected to a drain of the first transistor and an anode of the first diode;
• a negative electrode of the power storage device is electrically connected to a first terminal of the temperature sensor, an anode of the second diode, and a source of the second transistor;
• a cathode of the second diode is electrically connected to a drain of the second transistor and a second terminal of the heater;
• a gate of the second transistor is electrically connected to a gate of the first transistor;
• and
• a first terminal of the heater is electrically connected to a source of the first transistor and a cathode of the first diode.