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

• US 9,270,229 B2
• Filed: 09/18/2014
• Issued: 02/23/2016
• Est. Priority Date: 08/31/2006
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Osada, Takeshi
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US14/489,935
• Publication Number:
  US 20150002093A1
• Time in Patent Office: 523 Days
• Field of Search: 320/108, 320/137, 235/487, 235/492
• US Class Current: 1/1
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/23 characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H03D 9/00 Demodulation or transference of modulation of modulated electromagnetic waves demodulating light, transferring modulation in light waves G02F2/00
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

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.

Claims

1. A semiconductor device comprising:

a conductive film;

a power supply portion operationally connected to the conductive film;

a flexible battery with a sheet-like form operationally connected to the power supply portion; and

a counter circuit operationally connected to the power supply portion,

wherein the power supply portion is configured to output electric power,

wherein the flexible battery is configured to be input with the electric power output from the power supply portion,

wherein the counter circuit counts charging time of the flexible battery, and

wherein the counter circuit includes flip flop circuits.

2. The semiconductor device according to claim 1, wherein the conductive film is an antenna.

3. The semiconductor device according to claim 1, wherein the power supply portion includes a rectifier circuit that rectifies an electromagnetic wave being input to the conductive film.

4. The semiconductor device according to claim 1, wherein the power supply portion includes a rectifier circuit and a charging control circuit, and

wherein the charging control circuit is configured to output the electric power.

5. The semiconductor device according to claim 1, wherein the power supply portion includes a power supply circuit, and

wherein the power supply circuit controls a voltage level of an electric signal being output from the flexible battery.

6. The semiconductor device according to claim 1, further comprising a sheet material,

wherein the conductive film, the power supply portion, the flexible battery, and the counter circuit are provided over the sheet material.

7. The semiconductor device according to claim 6, wherein the sheet material comprises a hot-melt film.

8. The semiconductor device according to claim 6, wherein the sheet material is an antistatic film.

9. A semiconductor device comprising:

a conductive film;

a rectifier circuit operationally connected to the conductive film;

a determination circuit operationally connected to the conductive film;

a flexible battery with a sheet-like form;

a counter circuit operationally connected to the rectifier circuit and the determination circuit, and

wherein the determination circuit determines whether the flexible battery is in a charging state or in a non-charging state in accordance with a signal being input from the conductive film and outputs a signal for switching the charging state and the non-charging state,

wherein the counter circuit counts charging time of the flexible battery and outputs the counted time to the determination circuit.

10. The semiconductor device according to claim 9, wherein the conductive film is an antenna.

11. The semiconductor device according to claim 9, further comprising:

a power supply circuit operationally connected to the flexible battery, and

wherein the power supply circuit controls a voltage level of an electric signal being output from the flexible battery.

12. The semiconductor device according to claim 9, wherein the counter circuit includes flip flop circuits.

13. The semiconductor device according to claim 9, further comprising:

a modulation circuit operationally connected to the conductive film, and

wherein the modulation circuit modulates a signal to be output to an external portion in accordance with the charging state or the non-charging state determined by the determination circuit.

14. The semiconductor device according to claim 9, further comprising a sheet material,

wherein the conductive film, the rectifier circuit, the determination circuit, the flexible battery, and the counter circuit are provided over the sheet material.

15. The semiconductor device according to claim 14, wherein the sheet material comprises a hot-melt film.

16. The semiconductor device according to claim 14, wherein the sheet material is an antistatic film.