Differential voltage battery DC power supply

• US 5,959,370 A
• Filed: 07/15/1998
• Issued: 09/28/1999
• Est. Priority Date: 07/15/1998
• Status: Expired due to Fees

• Current Assignee: U.S. Aircraft Safety
• Original Assignee: U.S. Aircraft Safety
• Inventors: Pardo, Herbert
• Primary Examiner(s): RIOS CUEVAS, ROBERTO JOSE
• Assistant Examiner(s): Garlepp, Ed
• Application Number:
  US09/115,500
• Time in Patent Office: 440 Days
• Field of Search: 307/64-66, 307/75, 307/77, 320/116-123, 320/107, 320/112, 429/9, 429/11, 429/99
• US Class Current: 307/77
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02J 1/14 Balancing the load in a network

Abstract

A differential voltage battery DC power supply for use with an electronic device, such as a computer, comprising a multi-cell battery, a plurality of regulators, at least one filter and a recharging circuit. The battery cells are electrically interconnected serially to produce positive voltages of 0 to positive 12 volts DC and negative voltages of 0 to negative 12 volts DC. The battery includes output terminals having output DC voltages closely corresponding to the input DC voltages required to power the electronic device. The output terminals are electrically interconnected to regulator circuitry, structured to drop the corresponding battery output terminal DC voltages to the input DC voltages required by the electronic device, and filters, structured to remove unwanted transients. The recharging circuit includes an AC voltage input terminal, at least one transformer structured to drop the input AC voltage to AC voltages corresponding to the battery output terminal DC voltages, and a plurality of rectifiers structured to convert the output AC voltages from the transformers to positive and negative DC voltages corresponding to the battery output terminal DC voltages.

Claims

1. A differential voltage battery DC power supply comprising:

an electronic device operable with DC power, said electronic device comprising a plurality of DC power inputs, each of said plurality of DC power inputs being structured for receiving a predetermined DC input voltage and a predetermined input current;

a battery having a plurality of rechargeable, interconnected cells and a plurality of output terminals tapped from predetermined junctions of said plurality of said interconnected cells, each of said plurality of output terminals corresponding to an output DC voltage;

means for dropping each of said output DC voltages to one of said predetermined DC input voltages, said means for dropping each of said plurality of output DC voltages being electrically interconnected to said plurality of output terminals and said plurality of DC power inputs; and

means for recharging said battery while said battery simultaneously provides said output DC voltages.

2. A differential voltage battery DC power supply as recited in claim 1 wherein said means for dropping each of said plurality of output DC voltages comprises a plurality of regulators, each of said plurality of regulators being structured to drop one of said output DC voltages to one of said predetermined DC input voltages.

3. A differential voltage battery DC power supply as recited in claim 1 further comprising a plurality of filters electrically interconnected to said means for dropping each of said plurality of output DC voltages and said plurality of DC power inputs, said plurality of filters being structured to reduce unwanted transients.

4. A differential voltage battery DC power supply as recited in claim 1 wherein said means for recharging said battery comprises means for receiving an input AC voltage, means for dropping said input AC voltage to a plurality of AC voltages corresponding to said plurality of output DC voltages, and means for converting each of said plurality of AC voltages to a positive and negative DC voltage corresponding to said plurality of output DC voltages.

5. A differential voltage battery DC power supply as recited in claim 4 wherein said means for dropping said input AC voltage to a plurality of AC voltages corresponding to said plurality of output DC voltages comprises at least one transformer.

6. A differential voltage battery DC power supply as recited in claim 4 wherein said means for converting each of said plurality of AC voltages to a positive and negative DC voltage corresponding to said plurality of output DC voltages comprises a rectifier.

7. A differential voltage battery DC power supply comprising:

an electronic device operable with DC power, said electronic device comprising a plurality of DC power inputs, each of said plurality of DC power inputs being structured for receiving a predetermined input DC voltage and a predetermined input current;

a battery having a plurality of rechargeable, interconnected cells and a plurality of output terminals tapped from predetermined junctions of said plurality of said interconnected cells, each of said plurality of output terminals corresponding to an output DC voltage;

a plurality of regulators electrically interconnected to said plurality of output terminals, each of said plurality of regulators being structured to drop one of said output DC voltages to one of said predetermined input DC voltages;

a plurality of filters, each of said plurality of filters being electrically interconnected to one of said plurality of regulators and said plurality of DC power inputs, said plurality of filters being structured to reduce unwanted transients; and

means for recharging said battery while said battery simultaneously provides said output DC voltages.

8. A differential voltage battery DC power supply as recited in claim 7 wherein said means for recharging said battery comprises means for receiving an input AC voltage, means for dropping said input AC voltage to a plurality of AC voltages corresponding to said plurality of output DC voltages, and means for converting said each of said plurality of AC voltages to a positive and negative DC voltage corresponding to said plurality of output DC voltages.

9. A differential voltage battery DC power supply as recited in claim 8 wherein said means for dropping said input AC voltage to a plurality of AC voltages corresponding to said plurality of output DC voltages comprises at least one transformer.

10. A differential voltage battery DC power supply as recited in claim 8 wherein said means for converting each of said plurality of AC voltages to a positive and negative DC voltage corresponding to said plurality of output DC voltages comprises a rectifier.

11. A differential voltage battery DC power supply comprising:

an electronic device operable with DC power, said electronic device comprising a plurality of DC power inputs, each of said plurality of DC power inputs being structured for receiving a predetermined input DC voltage and a predetermined input current;

a battery having a plurality of rechargeable, interconnected cells and a plurality of output terminals tapped from predetermined junctions of said plurality of said interconnected cells, each of said plurality of output terminals corresponding to an output DC voltage;

a plurality of regulators electrically interconnected to said plurality of output terminals, each of said plurality of regulators being structured to drop one of said output DC voltages to one of said predetermined input DC voltages;

a plurality of filters, each of said plurality of filters being electrically interconnected to one of said plurality of regulators and said plurality of DC power inputs, said plurality of filters being structured to reduce unwanted transients; and

means for recharging said battery while said battery simultaneously provides said output DC voltages, said means, for recharging said battery comprising at least one transformer structured to drop an input AC voltage to a plurality of AC voltages corresponding to said plurality of output DC voltages and a plurality of rectifiers, each of said plurality of rectifiers being structured to convert each of said plurality of AC voltages to a positive and negative DC voltage corresponding to said plurality of output DC voltages, whereby said positive and negative DC voltages are electrically interconnected to said battery so that said battery simultaneously recharges and provides said output DC voltages when said input AC voltage is present.