System and circuit for recharging large capacity batteries

• US 9,515,511 B1
• Filed: 04/18/2014
• Issued: 12/06/2016
• Est. Priority Date: 04/18/2014
• Status: Expired due to Fees

• Current Assignee: James Sioma, Lawrence Sioma
• Original Assignee: James Sioma, Lawrence Sioma
• Inventors: Sioma, Edward M.
• Primary Examiner(s): Fantu, Yalkew
• Assistant Examiner(s): Hernandez, Manuel
• Application Number:
  US14/255,996
• Time in Patent Office: 963 Days
• Field of Search: 320/107
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

A system and circuit for recharging a battery using an AC power source. A tuned circuit is created using a capacitor, an inductor, a rectifier and the battery being recharged. The rectifier and battery combine to create circuitry that is equivalent to an AC component. The equivalent circuitry is in series with the inductor. The capacitor is in parallel with the inductor and equivalent circuitry. The resultant circuit is tuned and can be operated at a resonance frequency. In operation, the tuned circuit provides a recharging current to the battery without the need for a transformer or current resistive elements. The result is a recharging system and circuit that is smaller, lighter and far more power efficient than prior art battery chargers.

Claims

1. A circuit for recharging a battery from an AC power source, comprising:

a capacitor;

an inductor;

a rectifier;

wherein said inductor and said rectifier and said battery form a series combination;

wherein said capacitor is in parallel with said series combination; and

wherein said capacitor, said inductor, said rectifier and said battery form a tuned circuit that resonates at a resonance frequency, and wherein said tuned circuit produces a resonating current at said resonance frequency that is greater than current being drawn from said AC power source.

2. The circuit according to claim 1, wherein said AC power source is in parallel with said capacitor.

3. The circuit according to claim 2, wherein said AC power source is 240 volts and said battery has an operational voltage of at least 48 volts.

4. The circuit according to claim 1, wherein said circuit does not contain any resistors.

5. The circuit according to claim 1, wherein said rectifier is a full wave rectifier.

6. The circuit according to claim 1, wherein said inductor is a coil.

7. A charging system for recharging a battery, comprising:

an AC power source, wherein a first alternating current is drawn from said AC power source;

a capacitor in parallel to said power source that receives said first alternating current;

an inductor that receives said first alternating current from said AC power source; and

a rectifier for rectifying any of said first alternating current passing through said inductor;

wherein said inductor, said rectifier and said battery form a series combination, and said series combination is in parallel to said capacitor, wherein said capacitor, said inductor, said rectifier and said battery form a tuned circuit that resonates at a resonance frequency, and wherein said tuned circuit produces an oscillating and resonating current at said resonance frequency that is greater than said first alternating current being drawn from said AC power source.

8. The system according to claim 7, wherein said tuned circuit does not contain any resistors.

9. The system according to claim 7, wherein said rectifier is a full wave rectifier.

10. The system according to claim 7, wherein said inductor is a coil.

11. The system according to claim 7, wherein said AC power source is 240 volts and said battery has an operational voltage of at least 48 volts.

12. A charging system for recharging a battery, comprising:

a first plug connector for electrically engaging an available AC power source, wherein an initial alternating current is received through said first plug connector from said AC power source;

a second plug connector for electrically engaging a battery in need of recharging;

a capacitor;

an inductor; and

a rectifier for rectifying any of said initial alternating current passing through said inductor;

wherein said inductor, said rectifier and said battery form a series combination, and said series combination is in parallel to said capacitor, wherein said capacitor, said inductor, said rectifier combine with said battery, when connected to said second plug connector, to form a tuned circuit that resonates at a resonance frequency, and wherein said tuned circuit produces a resonating current at said resonance frequency that is greater than said initial alternating current being drawn from said AC power source.

13. The system according to claim 12, wherein said tuned circuit does not contain any resistors.

14. The system according to claim 12, wherein said rectifier is a full wave rectifier.

15. The system according to claim 12, wherein said inductor is a coil.

16. The system according to claim 12, wherein said AC power source is 240 volts and said battery has an operational voltage of at least 48 volts.