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

Abstract

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.

1 . (canceled) 
     
     
         2 . A power storage device comprising:
 an antenna configured to be supplied with an electromagnetic wave from a power feeder; and   a determination circuit configured to determine that charging is completed.   
     
     
         3 . The power storage device according to  claim 2 , wherein the antenna is configured to communicate with the power feeder. 
     
     
         4 . The power storage device according to  claim 2 , further comprising a flexible battery. 
     
     
         5 . The power storage device according to  claim 2 , further comprising a battery comprising a solid electrolyte layer. 
     
     
         6 . A power storage device comprising:
 an antenna configured to be supplied with an electromagnetic wave from a power feeder;   a battery electrically connected to the antenna; and   a determination circuit configured to determine that charging is completed,   wherein in a period in which the power storage device is charged, transmitting a signal for informing the power feeder side from the power storage device whether the power feeder and the power storage device are in a charging state.   
     
     
         7 . The power storage device according to  claim 6 , wherein the antenna is configured to communicate with the power feeder. 
     
     
         8 . The power storage device according to  claim 6 , wherein the battery is a flexible battery. 
     
     
         9 . The power storage device according to  claim 6 , wherein the battery comprises a solid electrolyte layer. 
     
     
         10 . A power storage device comprising:
 an antenna configured to be supplied with an electromagnetic wave from a power feeder;   a battery electrically connected to the antenna; and   a determination circuit configured to determine that charging is completed,   wherein in a period in which the power storage device is charged, transmitting a signal for informing the power feeder side from the power storage device whether the power feeder and the power storage device are in a charging state, and   wherein supplying electromagnetic wave by the power feeder is stopped after the signal from the power storage device is stopped,   
     
     
         11 . The power storage device according to  claim 10 , wherein the antenna is configured to communicate with the power feeder. 
     
     
         12 . The power storage device according to  claim 10 , wherein the battery is a flexible battery. 
     
     
         13 . The power storage device according to  claim 10 , wherein the battery comprises a solid electrolyte layer.