Method and apparatus for ultrarapidly charging a battery

• US 5,801,515 A
• Filed: 07/30/1997
• Issued: 09/01/1998
• Est. Priority Date: 11/28/1994
• Status: Expired due to Fees

• Current Assignee: Shu Chen, Yang Chen
• Original Assignee: Shu Chen, Yang Chen
• Inventors: Chen, Yang, Chen, Shu
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US08/849,091
• Time in Patent Office: 398 Days
• Field of Search: 320/128, 320/131, 320/137, 320/139, 320/141, 320/144, 320/145, 320/155, 320/158, 320/104, 320/118, 320/120, 320/148
• US Class Current: 320/139
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process

Abstract

A method and apparatus for ultrarapidly charging primary or secondary battery. Charging current is multiple-frequency complex pulse current which is comprised of pulse current overlapped by pulse current with at least two different frequency band and arbitrary waveform and opposite narrow pulse whose amplitude is three times higher than amplitude of said pulse current. The charging current may be larger than 1.5C10 and charging is performed in a manner of no discharging. Charging circuit is comprised of at least two different frequency oscillators, switch circuit and opposite narrow pulse generating circuit. The pulse current of different frequency may overlap each other, modulated and scanned and varied on frequency to generate multiple-frequency complex charging current.

Claims

1. A method for rapidly charging a battery comprising coupling to said battery a composite charging current that includes a first pulse train whose frequency is within a range of 0.1 Hz to 60 Hz, a second pulse train whose frequency is within a range of 61 Hz to 5,000 Hz, and a third pulse train of inverted narrow-width pulses whose amplitude is at least three times greater than an amplitude of a combination said first pulse train and said second pulse train;

wherein said composite charging current charges without discharging said battery.

2. The method of claim 1, wherein said composite current has at least one characteristic selected from the group consisting of (a) said first pulse train has a frequency in a range of 1 Hz to 15 Hz, and (b) said second pulse train has a frequency in a range of 80 Hz to 250 Hz.

3. The method of claim 1, wherein said composite current has at least one characteristic selected from the group consisting of (a) said first pulse train has a swept frequency, (b) said first pulse train has a constant frequency, (c) said second pulse train has a swept frequency, and (d) said second pulse train has a constant frequency.

4. The method of claim 1, wherein said composite current comprises only swept frequencies.

5. An apparatus for rapidly charging a battery, including:

a composite charging current circuit that provides a composite charging current and includes;

a first oscillator that provides a first pulse train whose frequency is within a range of 0.1 Hz to 60 Hz;

a second oscillator that provides a second pulse train whose frequency is within a range of 61 Hz to 5,000 Hz;

a switch circuit coupled between a source of charging power and charging terminals of said battery to control an on and off state of said charging current, said switch current also coupled to output terminals of said first oscillator and said second oscillator to present generated overlapping multiple frequency current pulse signals therefrom;

an inverted sharp pulse generator circuit, comprising at least an inductor, a capacitor, and a resistor, coupled to said switch circuit to generate a train of inverted narrow-width pulses whose amplitude is at least three times greater than an amplitude of a combination said first pulse train and said second pulse train;

wherein said composite charging current charges without discharging said battery.

6. The apparatus of claim 5, wherein said composite charging current circuit has at least one characteristic selected from the group consisting of (a) said first frequency has a range of 1 Hz to 15 Hz, (b) said first frequency is swept, (c) said first frequency is constant, (d) said second frequency has a range of 80 Hz to 250 Hz, (e) said second frequency is swept, and (f) said second frequency is constant.

7. The apparatus of claim 5, wherein said composite charging current circuit has at least one characteristic selected from the group consisting of (a) said first pulse train modulates said second oscillator to vary said second frequency, and (b) said second pulse train modulates said first oscillator to vary said first frequency;

wherein said composite current includes modulated multiple frequencies.

8. The apparatus of claim 7, wherein said composite charging current circuit has at least one characteristic selected from the group consisting of (a) said first frequency has a range of 1 Hz to 15 Hz, (b) said first frequency is swept, (c) said first frequency is constant, (d) said second frequency has a range of 80 Hz to 250 Hz, (e) said second frequency is swept, and (f) said second frequency is constant.

9. The apparatus of claim 5, wherein said apparatus is useable in at least one environment selected from the group consisting of (a) an independent battery charger, and (b) a battery charged included with an electronic device.

10. The apparatus of claim 6, wherein said apparatus is useable in at least one environment selected from the group consisting of (a) an independent battery charger, and (b) a battery charged included with an electronic device.

11. The apparatus of claim 7, wherein said apparatus is useable in at least one environment selected from the group consisting of (a) an independent battery charger, and (b) a battery charged included with an electronic device.

12. The apparatus of claim 8, wherein said apparatus is useable in at least one environment selected from the group consisting of (a) an independent battery charger, and (b) a battery charged included with an electronic device.