Circuit for charging battery at higher potential

• US 4,387,333 A
• Filed: 12/01/1980
• Issued: 06/07/1983
• Est. Priority Date: 12/01/1980
• Status: Expired due to Term

• Current Assignee: Toro Company (Toro)
• Original Assignee: Outboard Marine Corporation (Bombardier Incorporated)
• Inventors: St. Ledger, Joseph B.
• Primary Examiner(s): Hickey, R. J.
• Application Number:
  US06/211,641
• Time in Patent Office: 918 Days
• Field of Search: 322/89, 322/90, 322/60, 322/95, 322/96, 363/59-61, 320/21, 320/51, 320/57, 320/59, 320/7
• US Class Current: 320/137
• CPC Class Codes: H02J 7/1492 by means of controlling devices between the generator output and the battery
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y10S 320/22 Line impedance, e.g. resistor

Abstract

Disclosed herein is a circuit for charging a battery having opposed terminals, which circuit includes a relatively rotatable magnet and charge coil for generating charging potentials of alternating first and second polarities, the charge coil having first and second terminals, a diode having an anode connected to the first terminal of the charge coil and a cathode adapted for connection to one of the battery terminals, whereby to afford application to the battery for charging purposes of the potential of the first polarity, and a sub circuit connected to the first and second terminals of the charge coil and to the opposed terminals of the battery for storing the energy of the second polarity potential and for applying the stored energy to the battery with the application to the battery of the potential of the first polarity.

Claims

1. A circuit for charging a battery having opposed terminals, said circuit including a source of alternating potentials of first and second polarities, said source including first and second terminals, a diode having an anode connected to said first terminal of said source and a cathode adapted for connection to one of the battery terminals, whereby to afford application to the battery for charging purposes of the potential of the first polarity, and means connected to said first and second terminals of said source and to the opposed terminals of the battery for storing the energy of the second polarity potential without completing a circuit through the battery and for applying the stored energy to the battery with the application to the battery of the potential of the first polarity, said means for storing energy and for applying the stored energy including a capacitor having a plate connected to said first terminal in parallel with the connection of said anode to said first terminal for application to said plate of alternating potentials.

2. A circuit for charging a battery having opposed terminals, said circuit including means for generating charging potentials of alternating first and second polarities including a charge coil having first and second terminals, a diode having an anode connected to said first terminal of said charge coil and a cathode adapted for connection to one of the battery terminals, whereby to afford application to the battery for charging purposes of the potential of the first polarity generated by said means for generating charging potentials of alternating polarities, a capacitor having a first plate connected to said first terminal of said charge coil in parallel with said anode of said first mentioned diode, said capacitor also including a second plate, a second diode including an anode connected to said second plate of said capacitor, said second diode also including a cathode, a third diode having a cathode connected between said second capacitor plate and said anode of said second diode and having an anode connected to said second charge coil terminal, said cathode of said second diode being adapted for connection to the one battery terminal, and said anode of said third diode and said second charge coil terminal being adapted for connection to the other one of the battery terminals.

3. A circuit in accordance with claim 2 and further including a battery having a first terminal connected to said cathodes of said first and second diodes and also having a second terminal connected to said anode of said third diode and to said second terminal of said charge coil.

4. A circuit for charging a battery having opposed terminals, said circuit comprising a charge coil having first and second terminals, a first diode including an anode connected to said first terminal of said charge coil, said first diode also including a cathode, a capacitor including a first plate connected to said first terminal of said charge coil in parallel with said first diode, and also including a second plate, a second diode including an anode connected to said second plate and a cathode, a third diode having a cathode connected between said second capacitor plate and said second diode anode and having an anode connected to said second charge coil terminal, said cathodes of said first and second diodes being adapted for connection to one of the opposed terminals of the battery and said second charge coil terminal and said third diode anode being adapted for connection to the other one of the opposed terminals of the battery.

5. A battery charging circuit comprising a battery having opposed first and second terminals, a charge coil having first and second terminals, a first diode including an anode connected to said first terminal of said charge coil, and a cathode connected to said first battery terminal, a capacitor including a first plate connected to said first terminal of said charge coil in parallel with said first diode, and also including a second plate, a second diode including an anode connected to said second plate and a cathode connected to said first battery terminal, a third diode having a cathode connected between said second capacitor plate and said second diode anode and having an anode connected to said second charge coil terminal and to said second terminal of said battery.

6. A circuit for charging a battery having opposed terminals, said circuit including a source of alternating potentials of first and second polarities, said source including first and second terminals, a diode having an anode connected to said first terminal of said source and a cathode adapted for connection to one of the battery terminals, whereby to afford application to the battery for charging purposes of the potential of the first polarity, a capacitor having a first plate connected to said first terminal of said source in parallel with said anode of said first diode, said capacitor also including a second plate, a second diode including an anode connected to said second plate of said capacitor, said second diode also including a cathode, a third diode having a cathode connected between said second capacitor plate and said anode of said second diode and having an anode connected to said second terminal of said source, said cathode of said second diode being adapted for connection to the one battery terminal, and said anode of said third diode and said second terminal of said source being adapted for connection to the other one of the battery terminals.