ELECTRIC POWER SUPPLY APPARATUS OF ELECTRIC APPARATUS

• US 20120235490A1
• Filed: 02/15/2012
• Published: 09/20/2012
• Est. Priority Date: 02/15/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Kyu Suk, Park, Hyun Soo, Park, Young Jin
• Granted Patent: US 9,143,006 B2
• Time in Patent Office: Days
• US Class Current: 307/66
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 9/005 using a power saving mode for copiers G03G15/5004
• CPC Class Codes: H02J 9/06 with automatic change-over , e.g. UPS systems
• CPC Class Codes: H03K 2217/0036 Means reducing energy consumption
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

An electric power supply of an electric apparatus is provided. The electric power supply includes a low power supply unit configured to convert a voltage of an input alternating current (AC) power source and provide the converted voltage, a power storage unit configured to be charged by receiving the converted voltage from the low power supply unit and to provide the charged power as a standby power of the electric apparatus, a voltage detection unit configured to detect a level of voltage charged in the power storage unit, and a switch unit configured to allow the voltage of the low power supply unit to be supplied to the power storage unit, or to block the voltage of the low power supply unit from being supplied to the power storage unit according to the level of voltage charged in the power storage unit detected through the voltage detection unit.

Claims

1. An electric power supply apparatus of an electric apparatus, the electric power supply apparatus comprising:

a low power supply unit configured to convert a voltage of an input alternating current (AC) power source and provide the converted voltage;

a power storage unit configured to be charged by receiving the converted voltage from the low power supply unit and to provide the charged power as a standby power of the electric apparatus;

a voltage detection unit configured to detect a level of voltage charged in the power storage unit; and

a switch unit configured to allow the voltage of the low power supply unit to be supplied to the power storage unit, or to block the voltage of the low power supply unit from being supplied to the power storage unit according to the level of voltage charged in the power storage unit detected through the voltage detection unit.

2. The electric power supply of claim 1, wherein the low power supply unit comprises:

a plurality of capacitors connected in series; and

a rectifier diode connected to both ends of one of the plurality of capacitors.

3. The electric power supply of claim 1, wherein the low power supply unit comprises:

a circuit including a capacitor in series with a voltage regulator made from a resistance and a diode; and

a rectifier diode connected to both ends of the voltage regulator.

4. The electric power supply of claim 1, wherein the power storage unit is a super capacitor.

5. The electric power supply of claim 1, wherein the power storage unit is a rechargeable battery.

6. The electric power supply of claim 1, wherein the switch unit is switched on such that the power storage unit is charged with a predetermined level of voltage when the level of voltage charged in the power storage unit, and is equal to or below a reference voltage, and is switched off such that a predetermined level of voltage charged in the power storage unit is discharged when the level of voltage charged in the power storage unit exceeds the reference voltage.

7. An electric power supply apparatus of an electric apparatus, the electric power supply apparatus comprising:

a main power supply unit configured to convert a voltage of an input alternating current (AC) power to a main power, which is required to control an operation of the electric apparatus, and to provide the main power;

a first switch unit configured to allow the input AC power source to be supplied to the main power supply unit or to block the input AC power source from being supplied to the main power supply unit;

a low power supply unit configured to convert the voltage of the input AC power source and to provide the converted voltage;

a power storage unit configured to be charged by receiving the converted voltage from the low power supply unit, and to provide the charged power as a standby power of the electric apparatus;

a voltage detection unit configured to detect a level of voltage charged in the power storage unit;

a second switch unit configured to allow the voltage of the low power supply unit to be supplied to the power storage unit, or to block the voltage of the low power supply unit from being supplied to the power storage unit according to the level of voltage charged in the power storage unit detected through the voltage detection unit; and

a state detection unit configured to receive the power from the power storage unit to provide the received power to a circuit requiring a standby power, and to perform control such that the AC power source is allowed to be supplied to the main power supply unit, or is blocked from being supplied to the main power supply unit by transmitting a switch-on control signal or a switch-off control signal to the first switch unit according to a control signal that is input from an external part.

8. The electric power supply of claim 7, wherein the low power supply unit comprises:

a plurality of capacitors connected in series; and

a rectifier diode connected to both ends of one of the plurality of capacitors.

9. The electric power supply of claim 7, wherein the low power supply unit comprises:

a circuit including a capacitor in series with a voltage regulator made from a resistance and a diode; and

a rectifier diode connected to both ends of the voltage regulator.

10. The electric power supply of claim 7, wherein the power storage unit is a super capacitor.

11. The electric power supply of claim 7, wherein the power storage unit is a rechargeable battery.

12. The electric power supply of claim 7, wherein the second switch unit is switched on such that the power storage unit is charged with a predetermined level of voltage when the level of voltage charged in the power storage unit is equal to or below a reference voltage, and is switched off—

such that a predetermined level of voltage charged in the power storage unit is discharged to the state detection unit when the level of voltage charged in the power storage unit exceeds the reference voltage.

13. The electric power supply of claim 7, wherein the state detection unit comprises:

a signal receiving unit configured to receive the control signal from the external part;

a power source control unit configured to allow the AC power source to be supplied to the main power supply unit or to block the AC power source from being supplied to the main power supply unit according to the control signal transmitted from the signal receiving unit; and

an abnormal power shut down detection unit configured to determine whether the AC supply power source is blocked due to an abnormal condition.

14. The electric power supply of claim 13, wherein the blocking of the AC power source due to the abnormal condition represents a case that a plug is pulled out, or a power failure occurs while the electric apparatus is in an operating mode.

15. The electric power supply of claim 14, wherein the abnormal power shut-down detection unit comprises:

a capacitor configured to provide the abnormal power shut-down detection unit with a power source even when the AC power source is blocked;

a freewheeling diode configured to prevent power of the capacity from leaking to outside the abnormal power shut-down detection unit; and

two switching elements while each may be configured to control the first switch unit.

16. The electric power supply of claim 15, wherein one of the two switching elements is a PNP type bipolar junction transistor and a remaining is an NPN type bipolar junction transistor, wherein a collector of the PNP type bipolar junction transistor is connected to a base of the NPN type bipolar junction transistor, and wherein

if an electric current is passed through a base of the PNP type bipolar junction transistor, the first switch unit is switched off.