Apparatus and method for regulating and monitoring a chargeable device with minimal operator intervention

• US 7,148,657 B2
• Filed: 09/06/2002
• Issued: 12/12/2006
• Est. Priority Date: 06/27/2002
• Status: Expired due to Term

• Current Assignee: SPX Corporation
• Original Assignee: SPX Corporation
• Inventors: Franz, Martin, Raichle, Kurt
• Primary Examiner(s): TIBBITS, PIA FLORENCE
• Application Number:
  US10/235,794
• Publication Number:
  US 20040000893A1
• Time in Patent Office: 1,558 Days
• Field of Search: 320/135, 320/148, 320/149, 320/156, 320/157, 320/158, 320/162, 320/139, 320/143, 320/163, 320/164, 320/116, 320/106, 320/145, 320/132, 324/427, 324/428, 324/429, 324/433, 324/522, 340/636.16, 340/636.1
• US Class Current: 320/162
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation

Abstract

A method and apparatus that enables the load applied to a battery to be regulated. Regulation of the load to the battery is based upon a load request from which a set-point is derived in a microprocessor. From this set-point, voltage is either allowed to pass or not to pass through a regulator.

Claims

1. An apparatus for charging a battery comprising:

a power transformer;

a rectifier located at an output of the transformer;

a switch positioned at an output of the rectifier;

an input that is configured to allow a selection of a desired voltage and current, wherein the selection of the desired voltage and current results in a set-point;

a microprocessor linked to the switch, the microprocessor configured to determine the operability of the switch by comparing the set-point with an output value from the rectifier and operating the switch accordingly, wherein the set-point is placed at location on the sine wave and based upon the voltage selection.

2. The apparatus as in claim 1, wherein the battery is a lead-acid battery.

3. The apparatus as in claim 1, wherein the switch is a thyristor.

4. The apparatus as in claim 1, wherein the microprocessor is a field programmable gate array (FPGA).

5. The apparatus as in claim 4, wherein a set-point is provided to the FPGA.

6. The apparatus as in claim 5, wherein the FPGA calculates what voltage to pass through the switch in response to the set-point.

7. The apparatus as in claim 6, wherein the set-point determines a position on a rectifier output, which triggers the switch to pass a range of the voltage to the battery.

8. The apparatus as in claim 4, wherein the microprocessor is a computer programmable logic (CPLD).

9. The apparatus as in claim 5, wherein the set-point is based upon a desired battery voltage charge.

10. The apparatus as in claim 5, wherein the set point is based upon a desired battery current charge.

11. A method for charging a battery comprising:

receiving a voltage selection for supplying voltage to a battery;

creating a set-point based upon the voltage selection, wherein the set-point is arrived at by a microprocessor;

comparing the setpoint with an output value from a rectifier;

regulating a switch to permit voltage to pass through to the battery based upon the comparison;

receiving the voltage from a power transformer to apply to the battery, wherein the voltage is a rectifier sine wave;

charging the battery with the voltage that is permitted to pass through to the battery,

wherein the set-point, is used to determine a location on the rectified sine wave based upon the voltage selection.

12. The method as in claim 11, further comprising preventing the voltage from reaching the battery when the output value from the rectifier is greater then the set-point.

13. The method as in claim 12, wherein all the voltage from the set-point forward is allowed to pass to the battery.

14. An apparatus for charging a battery comprising:

means for receiving a voltage selection for supplying voltage to a battery;

means for determining a set-point based upon the voltage selection;

means for comparing the setpoint with an output value from a rectifier;

means for regulating a switch to permit voltage to pass through to the battery based upon the comparison;

means for charging the battery with the voltage that is permitted to pass through to the battery;

means for receiving the voltage to apply to the battery from a means for rectifying, the voltage outputted from the means for rectifying is an alternating current supply in the form of a sine wave,

wherein the set-point is placed at location on the sine wave and based upon the voltage selection.

15. The apparatus as in claim 14, further comprising means for preventing the voltage from reacting the battery when the value from the rectifier is greater than the set point value.

16. The apparatus as in claim 14, wherein all the voltage from the set-point forward is allowed to pass to the battery.

17. An apparatus for charging a battery, comprising:

a battery charger configured to charge a battery;

an input device that is configured to receive a desired voltage in order to charge the battery;

a processor device linked to the battery charger, the processing device is configured to determine a se-point based upon the desired voltage; and

a regulator linked to the battery charger and processor, wherein the processor regulates a voltage from the battery charger to the battery based upon the set point,

wherein the set-point is placed at location on a sine wave and based upon the desired voltage.

18. The apparatus as in claim 17, wherein the processor device is a field programmable gate array (FPGA).

19. The apparatus as in claim 17, wherein the processor device is a microprocessor.

20. The apparatus as in claim 17, wherein the voltage selection is a desired battery voltage.

21. The apparatus as in claim 17, wherein the regulator permits only certain voltages to pass to the battery.