Method and Device Tolerant to Direct Current Source Fluctuation for Pulse Charging a Battery

• US 20070222411A1
• Filed: 03/22/2005
• Published: 09/27/2007
• Est. Priority Date: 03/23/2004
• Status: Active Grant

• Current Assignee: Jean-Michel Cour
• Original Assignee: Jean-Michel Cour
• Inventors: Cour, Jean-Michel
• Granted Patent: US 7,928,700 B2
• Time in Patent Office: Days
• US Class Current: 320/101
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/465 with solar battery as charging system
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method for charging a battery (16) from a direct-current source liable to significant fluctuations, which includes the steps of:

• • progressively charging a storage capacitor (14) at a voltage that is higher than the nominal voltage of the battery (16),
  • detecting a predetermined voltage threshold over the terminals of the storage capacitor (14), and
  • discharging the storage capacitor (14) into the battery (16), the discharging being controlled by the threshold detection.

Claims

1-8. -8. (canceled)

9. A method for charging a battery (16) from a direct-current source liable to significant fluctuations, comprising the steps of:

converting the DC voltage from said direct-current source into a DC voltage which is higher than the voltage of said battery and is applied for progressively charging a storage capacitor (14),

detecting a predetermined voltage threshold over the terminals of said storage capacitor (14), and

discharging said storage capacitor (14) into said battery (16), said discharging being controlled by said threshold detection.

10. The method of claim 9, implemented for charging a battery from a photovoltaic cells source.

11. The method of claim 9, implemented for electrically supplying a lighting equipment for a vehicle, from a bicycle dynamo-electric generator.