POWER STORAGE SYSTEM AND POWER STORAGE METHOD

摘要

A power storage system includes: a power generation element that performs environmental power generation; a storage battery that is supplied with power generated by the power generation element; a DC/DC converter that converts an output voltage from the power generation element into a predetermined voltage; a first switch unit that switches whether directly supply the output voltage from the power generation element to the storage battery or to supply thereto via the DC/DC converter; and a first changeover unit that compares a voltage of the storage battery with a first threshold voltage, and controls the first switch unit according to a comparison result, in a case where a voltage of the voltage or higher of the storage battery bringing the DC/DC converter into a main boost mode is the first threshold voltage.

主权项

1. A power storage system comprising:
a power generation element that performs environmental power generation; a storage battery that is supplied with power generated by the power generation element; a DC/DC converter that converts an output voltage from the power generation element into a predetermined voltage; a first switch unit that switches whether to directly supply the output voltage from the power generation element to the storage battery or to supply thereto via the DC/DC converter; and a first changeover unit that compares a voltage of the storage battery with a first threshold voltage, and controls the first switch unit according to a comparison result, in a case where a voltage of the voltage or higher of the storage battery bringing the DC/DC converter into a main boost mode is the first threshold voltage, wherein the first changeover unit controls the first switch unit so that the output voltage is directly supplied from the power generation element to the storage battery, in a case where the voltage of the storage battery is equal to or lower than the first threshold voltage, and the first changeover unit controls the first switch unit so that the output voltage is supplied from the power generation element to the storage battery via the DC/DC converter, in a case where the voltage of the storage battery exceeds the first threshold voltage.