High efficiency charging apparatus using switching arrangement and charging/discharging

• US 9,728,996 B2
• Filed: 07/27/2012
• Issued: 08/08/2017
• Est. Priority Date: 01/28/2010
• Status: Active Grant

• Current Assignee: Run Energy
• Original Assignee: Run Energy
• Inventors: Jang, Suk-ho
• Primary Examiner(s): Berhanu, Samuel
• Assistant Examiner(s): Rankine, Tarikh
• Application Number:
  US13/560,445
• Publication Number:
  US 20120293134A1
• Time in Patent Office: 1,838 Days
• Field of Search: 320137
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• 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: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A high efficiency charging apparatus, includes a power supply which is a source for supplying electricity for charging; a speed setting unit setting an oscillating frequency and outputting an electrical self-oscillating signal having a frequency corresponding to the oscillating frequency; a switching unit having a plurality of switches which are driven by the electrical self-oscillating signal supplied from the speed setting unit; and a power transmitting unit supplying a current from the power supply to a capacitor multiple times according to a drive state of the plurality of switches of the switching unit and discharging the current charged in the capacitor at one time to supply the discharged current to the battery. The charging apparatus improves charging efficiency and reduces a charging time of a lead or nickel battery used in a vehicle or the like.

Claims

1. A high efficiency charging apparatus, comprising:

a power supply which is a source for supplying electricity for charging a battery;

a speed setting unit for setting an oscillating frequency and outputting an electrical self-oscillating signal having a frequency corresponding to the oscillating frequency;

a switching unit having a plurality of switches which are driven by the electrical self-oscillating signal supplied from the speed setting unit;

a power transmitting unit for driving a current in the power supply to a capacitor multiple times in one charging cycle according to a drive state of the plurality of switches of the switching unit to charge the capacitor first and then discharging the current charged in the capacitor to the battery at one time in the charging cycle according to the drive state of the plurality of switches in order to supply the current to the battery, wherein the battery is charged by repeating the charging cycle multiple times; and

wherein the power transmitting unit comprises;

a first field effect transistor (FET) which is driven by a first switching signal through a first switch of the switching unit to form a closed loop for primarily supplying the electric power of the power supply to charge the capacitor and is driven by a second switching signal through a second switch of the switching unit and a condenser to form a closed loop for secondarily supplying the electric power of the power supply to charge the capacitor;

a second FET which is driven by a third switching signal through a third switch of the switching unit to form a closed loop for tertiary supplying the electric power of the power supply to charge the capacitor; and

a third FET which is driven by a fourth switching signal through a fourth switch of the switching unit to form a closed loop connecting between the capacitor and the battery and between the battery and the power supply.

2. The apparatus according to claim 1, wherein the plurality of switches are driven by the electrical self-oscillating signal of the speed setting unit having a time difference therebetween.

3. The apparatus according to claim 1, wherein the switches of the switching unit are repeatedly driven having a time difference therebetween, such that a process of charging the capacitor three times and discharging the capacitor to charge the battery from the capacitor one time in the charging cycle is repeated to charge the electric power of the power supply in the battery.

4. The apparatus according to claim 1, wherein the capacitor is an electrolytic capacitor.

5. A high efficiency charging apparatus, comprising:

a power supply which is a source for supplying electricity for charging a battery;

a speed setting unit for setting an oscillating frequency and outputting an electrical self-oscillating signal having a frequency corresponding to the oscillating frequency;

a switching unit having a plurality of switches which are driven by the electrical self-oscillating signal supplied from the speed setting unit; and

a power transmitting unit for driving a current in the power supply to a capacitor multiple times in one charging cycle according to a drive state of the plurality of switches of the switching unit and discharging the current charged in the capacitor to the battery at one time in the charging cycle, wherein the battery is charged by repeating the charging cycle multiple times,

wherein the power transmitting unit comprises;

a first field effect transistor (FET) which is driven by a first switching signal through a first switch of the switching unit to form a closed loop for primarily supplying the electric power of the power supply to charge the capacitor and is driven by a second switching signal through a second switch of the switching unit and a condenser to form a closed loop for secondarily supplying the electric power of the power supply to charge the capacitor;

a second FET which is driven by a third switching signal through a third switch of the switching unit to form a closed loop for tertiary supplying the electric power of the power supply to charge the capacitor; and

a third FET which is driven by a fourth switching signal through a fourth switch of the switching unit to form a closed loop connecting between the capacitor and the battery and between the battery and the power supply.

6. The apparatus according to claim 5, wherein the switches of the switching unit are repeatedly driven having a time difference therebetween, such that a process of charging the capacitor three times and discharging the capacitor to charge the battery from the capacitor one time in the charging cycle is repeatedly performed to charge the electric power of the power supply in the battery.

7. A high efficiency charging apparatus, comprising:

a power supply which is a source for supplying electricity for charging a battery;

a speed setting unit for setting an oscillating frequency and outputting an electrical self-oscillating signal having a frequency corresponding to the oscillating frequency;

a switching unit having a plurality of switches which are driven by the electrical self-oscillating signal supplied from the speed setting unit;

a power transmitting unit for driving a current in the power supply to a capacitor multiple times in one charging cycle according to a drive state of the plurality of switches of the switching unit and discharging the current charged in the capacitor to the battery at one time in the charging cycle;

wherein the switches of the switching unit are repeatedly driven having a time difference therebetween, such that a process of charging the capacitor from the power supply and a process of charging the battery from the capacitor are repeatedly performed to charge the electric power of the power supply in the battery; and

wherein the power transmitting unit comprises;

a first field effect transistor (FET) which is driven by a first switching signal through a first switch of the switching unit to form a closed loop for primarily supplying the electric power of the power supply to charge the capacitor and is driven by a second switching signal through a second switch of the switching unit and a condenser to form a closed loop for secondarily supplying the electric power of the power supply to charge the capacitor;

a second FET which is driven by a third switching signal through a third switch of the switching unit to form a closed loop for tertiary supplying the electric power of the power supply to charge the capacitor; and

a third FET which is driven by a fourth switching signal through a fourth switch of the switching unit to form a closed loop connecting between the capacitor and the battery and between the battery and the power supply.