Power storage device and semiconductor device provided with the power storage device

摘要

An object is to provide a power storage device provided with a battery that is a power storage means, for safe and accurate supply of electric power in a short period of time for drive power supply voltage without checking remaining capacity of the battery or changing batteries with deterioration over time of the battery for drive power supply voltage. The power storage device is provided with a battery that is a power storage means as a power supply for supplying electric power and a counter circuit for counting charging time of the power storage means. An electromagnetic wave with electric field intensity, magnetic field intensity, and power flux density per unit time which are transmitted from a power feeder are controlled, and the power storage means is efficiently charged using the electromagnetic wave in a short period of time.

主权项

1. A semiconductor device comprising:
a conductive film configured to receive an electromagnetic wave; a rectifier circuit electrically connected to the conductive film; a power supply portion comprising the rectifier circuit, the power supply portion being operationally connected to the conductive film and to a signal processing circuit; a battery operationally connected to the power supply portion; and a charging determination portion operationally connected to the power supply portion and the conductive film, wherein the power supply portion is configured to output electric power, wherein the signal processing circuit and the battery are configured to be input with the electric power output from the power supply portion, and wherein the charging determination portion counts charging time of the battery.