ELECTRONIC APPARATUS AND FEED SYSTEM

• US 20140333257A1
• Filed: 12/11/2012
• Published: 11/13/2014
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Akiyoshi, Koichi, Uramoto, Yoichi
• Granted Patent: US 10,389,175 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/488 Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electronic apparatus includes: a power reception section configured to receive power transmitted with use of a magnetic field or an electric field; a secondary battery; a charging section configured to perform charging to the secondary battery, based on received power received by the power reception section; a load configured to perform predetermined operation, based on supplied power; and a control section configured to forcibly set a power path on a preceding side of the load to a predetermined state when the load is activated in the charging to the secondary battery.

Claims

1. An electronic apparatus comprising:

a power reception section configured to receive power transmitted with use of a magnetic field or an electric field;

a secondary battery;

a charging section configured to perform charging to the secondary battery, based on received power received by the power reception section;

a load configured to perform predetermined operation, based on supplied power; and

a control section configured to forcibly set a power path on a preceding side of the load to a predetermined state when the load is activated in the charging to the secondary battery.

2. The electronic apparatus according to claim 1, further comprising

a state informing section configured to inform outside of an apparatus state of itself, wherein

the control section forcibly sets the power path to forcibly fix an informing mode by the state informing section when the load is activated in the charging.

3. The electronic apparatus according to claim 2, wherein the state informing section informs a state in charging to the secondary battery and a state after completion of the charging as the apparatus state by a distinguished informing mode.

4. The electronic apparatus according to claim 3, wherein

the state informing section includes a lighting section configured to inform a state in the charging and a state after completion of the charting, according to a lighting state, and a lighting control section configured to control the lighting state of the lighting section, and

the control section performs control to allow the lighting state of the lighting section to be fixed irrespective of lighting control by the lighting control section when the load is activated in the charging.

5. The electronic apparatus according to claim 4, wherein

the state informing section includes one or a plurality of kinds of switching devices, and

the control section sets ON-OFF state of one or more kinds of the one or the plurality of kinds of switching devices and forcibly sets the power path, to fix the lighting state of the lighting section when the load is activated in the charging.

6. The electronic apparatus according to claim 5, wherein

the state informing section includes a first switching device as the one or the plurality of kinds of switching devices, and

the control section sets the first switching device to an ON state and forcibly puts the power path into a conductive state, to fix the lighting section to a lighting state when the load is activated in the charging.

7. The electronic apparatus according to claim 5, wherein

the state informing section includes a second switching device as the one or the plurality of kinds of switching devices, and

the control section sets the second switching device to OFF state, and forcibly puts the power path into a blocked state, to fix the lighting section to a lighting-off state when the load is activated in the charging.

8. The electronic apparatus according to claim 4, wherein the control section fixes the lighting state of the lighting section according to supply state of the received power and power consumption state of the load when the load is activated in the charging.

9. The electronic apparatus according to claim 8, wherein when a generation period of surplus power is relatively high rate, the control section forcibly puts the power path into the conductive state to fix the lighting section to the lighting state, and when the generation period of the surplus power is relatively low rate, the control section forcibly puts the power path into the blocked state to fix the lighting section to the lighting-off state, the surplus power being obtained by subtracting power consumed by the load from the received power, and the surplus power being used in charging to the secondary battery.

10. The electronic apparatus according to claim 1, further comprising

a third switching device provided on a power supply path to the load, wherein

the control section sets the third switching device to OFF state to forcibly put the power supply path to the load as the power path, into a blocked state when the load is activated in the charging.

11. The electronic apparatus according to claim 10, wherein when the load is activated in the charging and when a charged amount in the secondary battery is lower than a predetermined threshold, the control section sets the third switching device to the OFF state.

12. A feed system provided with one or a plurality of electronic apparatuses and a feed unit configured to transmit power to the electronic apparatuses with use of a magnetic field or an electric field, the electronic apparatuses each comprising:

a power reception section configured to receive power transmitted from the feed unit;

a secondary battery;

a charging section configured to perform charging to the secondary battery, based on received power received by the power reception section;

a load configured to perform predetermined operation, based on supplied power; and

a control section configured to forcibly set a power path on a preceding side of the load to a predetermined state when the load is activated in the charging to the secondary battery.