POWER SUPPLYING APPARATUS AND POWER CHARGING APPARATUS

• US 20140159676A1
• Filed: 02/13/2013
• Published: 06/12/2014
• Est. Priority Date: 12/06/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: CHO, Young Jin, CHO, Won Jin
• Application Number:
  US13/766,537
• Publication Number:
  US 20140159676A1
• Time in Patent Office: Days
• US Class Current: 320/162
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 1/0058 by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 1/4225 using a non-isolated boost converter
• CPC Class Codes: H02M 3/33523 with galvanic isolation between input and output of both the power stage and the feedback loop
• CPC Class Codes: H02M 7/4815 Resonant converters H02M7/4811 and H02M7/4826 take precedence
• 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: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
• CPC Class Codes: Y02P 80/10 Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Abstract

There are provided a power supplying apparatus controlling voltage of a power factor correcting circuit according to a power state and a power charging apparatus controlling voltage of a power factor correcting circuit according to a charging state of a battery. The power supplying apparatus includes: a power factor correcting circuit switching input power to correct a power factor thereof and adjusting a voltage level of the power of which the power factor has been corrected according to a state of power transferred to a load; and a resonant DC to DC converting circuit having a resonance frequency varied according to a voltage level of DC power from the power factor correcting circuit and converting the DC power from the power factor correcting circuit into supply power having a preset level according to the resonance frequency.

Claims

1. A power supplying apparatus comprising:

a power factor correcting circuit switching input power to correct a power factor thereof and adjusting a voltage level of the power of which the power factor has been corrected according to a state of power transferred to a load; and

a resonant direct current (DC) to DC converting circuit having a resonance frequency varied according to a voltage level of DC power from the power factor correcting circuit and converting the DC power from the power factor correcting circuit into supply power having a preset level according to the resonance frequency.

2. The power supplying apparatus of claim 1, wherein the power factor correcting circuit lowers the voltage level of the power of which the power factor has been corrected according to the state of the power transferred to the load.

3. The power supplying apparatus of claim. 2, wherein the resonant DC to DC converting circuit lowers the resonance frequency according to the voltage level of the power lowered in the power factor correcting circuit.

4. The power supplying apparatus of claim 3, wherein the power factor correcting circuit includes:

a power factor correcting unit switching the input power to correct the power factor thereof and lowering the voltage level of the power of which the power factor has been corrected; and

a first controlling unit controlling the lowering of the voltage level of the power in the power factor correcting unit according to the state of the power transferred to the load.

5. The power supplying apparatus of claim. 4, wherein the resonant DC to DC converting circuit includes:

a converting unit converting the DC power from the power factor correcting unit into the supply power according to the resonance frequency; and

a second controlling unit controlling the lowering of the resonance frequency according to the voltage level of the DC power from the power factor correcting circuit and transferring information on the state of the power transferred to the load to the first controlling unit.

6. The power supplying apparatus of claim 5, wherein the converting unit converts the DC power from the power factor correcting circuit into the supply power in an inductor-inductor-capacitor (LLC) resonance scheme.

7. A power charging apparatus comprising:

a power factor correcting circuit switching input power to correct a power factor thereof and adjusting a voltage level of the power of which the power factor has been corrected according to a charging state of a battery;

a resonant DC to DC converting circuit having a resonance frequency varied according to a voltage level of DC power from the power factor correcting circuit and converting the DC power from the power factor correcting circuit into charging power having a preset level according to the resonance frequency; and

a battery unit receiving the charging power and providing information on the charging state of the battery according to the received charging power.

8. The power charging apparatus of claim 7, wherein the power factor correcting circuit lowers the voltage level of the power of which the power factor has been corrected according to the charging state of the battery.

9. The power charging apparatus of claim 8, wherein the resonant DC to DC converting circuit lowers the resonance frequency according to the voltage level of the power lowered in the power factor correcting circuit.

10. The power charging apparatus of claim 9, wherein the power factor correcting circuit includes:

a power factor correcting unit switching the input power to correct the power factor thereof and lowering the voltage level of the power of which the power factor has been corrected; and

a first controlling unit controlling the lowering of the voltage level of the power in the power factor correcting unit according to the charging state of the battery.

11. The power charging apparatus of claim 10, wherein the resonant DC to DC converting circuit includes:

a converting unit converting the DC power from the power factor correcting circuit into the charging power according to the resonance frequency; and

a second controlling unit controlling the lowering of the resonance frequency according to the voltage level of the DC power from the power factor correcting circuit and transferring the information on the charging state of the battery to the first controlling unit.

12. The power charging apparatus of claim 11, wherein the converting unit converts the DC power from the power factor correcting circuit into the charging power in an inductor-inductor-capacitor (LLC) resonance scheme.

13. The power charging apparatus of claim 7, wherein the battery unit includes a battery charging controlling unit providing the information on the charging state of the battery.