POWER STORAGE UNIT AND SOLAR POWER GENERATION UNIT

摘要

Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.

主权项

1. 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.