Method of charging a battery using asymmetrical current

• US 5,646,505 A
• Filed: 09/08/1995
• Issued: 07/08/1997
• Est. Priority Date: 02/12/1993
• Status: Expired due to Fees

• Current Assignee: Vista International, Inc.
• Original Assignee: Vista International, Inc.
• Inventors: Nikolayev, Anatoliy G., Melnikov, Izot F.
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): Law, Patrick B.
• Application Number:
  US08/526,057
• Time in Patent Office: 669 Days
• Field of Search: 320/3, 320/4, 320/14, 320/21, 320/22, 363/42, 363/43
• US Class Current: 320/100
• 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: Y10S 320/27 Transformerless

Abstract

A method of charging a discharged battery by creating a level direct current carrier and a riding alternating current charging vector which rides on the level direct current, the alternating current having a repeating waveform comprising two phase displacements per wavelength. The phase displacements comprise a first amplitudinal increase and a second amplitudinal increase, a first amplitudinal decrease and a second amplitudinal decrease, the second amplitudinal increase beginning substantially at the same time that the phase angle of the alternating current charging vector returns to a zero angle, the second amplitudinal decrease ending substantially at the same time that the phase angle of the alternating current charging vector returns to a forty five degree angle; cyclically repeating the waveform at a constant angular frequency, phase period and amplitude; and applying such alternating current through battery terminals for a sufficient period of time for the level direct current carrier to rise substantially to the original direct current voltage of the battery in accordance with the affectivity of the alternating current charging vector and to charge the battery.

Claims

1. A method of charging a discharged battery comprising creating a level direct current carrier and a riding alternating current charging vector which rides on the level direct current, the alternating current having a repeating waveform comprising:

two phase displacements per wavelength, comprising;

a first amplitudinal increase and a second amplitudinal increase, a first amplitudinal decrease and a second amplitudinal decrease, the second amplitudinal increase beginning substantially at the same time that the phase angle of the alternating current charging vector returns to a zero angle, the second amplitudinal decrease ending substantially at the same time that the phase angle of the alternating current charging vector returns to a forty five degree angle;

cyclically repeating said waveform is at a constant angular frequency, phase period and amplitude;

applying such alternating current through battery terminals for a sufficient period of time for the level direct current carrier to rise substantially to the original direct current voltage of the battery in accordance with the affectivity of the alternating current charging vector and to charge the battery.

2. A method according to claim 1 wherein the battery is a dry cell battery.

3. A method according to claim 1 wherein the battery is selected from the group consisting of galvanic, alkaline, lithium, mercury oxide, silver oxide, zinc-carbon, zinc chloride, and nickel-cadmium batteries, both rechargeable and non-rechargeable.

4. A method according to claim 1 wherein the battery is a wet cell battery.