Mobile power supply

• US 7,531,917 B2
• Filed: 05/10/2006
• Issued: 05/12/2009
• Est. Priority Date: 05/10/2006
• Status: Expired due to Fees

• Current Assignee: PowerCart Systems, Inc. (Active Control Technology, Inc.)
• Original Assignee: PowerCart Systems, Inc. (Active Control Technology, Inc.)
• Inventors: Stone, Todd, Cutrona, Anthony
• Primary Examiner(s): DeBeradinis; Robert L.
• Application Number:
  US11/430,828
• Publication Number:
  US 20070262641A1
• Time in Patent Office: 1,098 Days
• Field of Search: 307/64
• US Class Current: 307/64
• CPC Class Codes: A61G 12/001 Trolleys for transport of medicaments, food, linen, nursing supplies carts specially adapted for surgery or diagnosis A61B50/13; hand carts B62B3/00
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

A power supply system suitable for use in a mobile cart for providing power to peripheral devices. The power supply system includes a combination inverter and transformer connected between an AC input and a battery terminal for providing electrical current to peripheral devices. A charger is connected between the AC input and the battery terminal for charging a battery and a cooling device is located for removing heat from both the combination inverter and transformer and the charger.

Claims

1. A power supply system suitable for use in a mobile cart for providing power to peripheral devices, the power supply system comprising:

a combination inverter and transformer connected between an AC input and a battery terminal for providing electrical current to peripheral devices;

a charger connected between said AC input and said battery terminal for charging a battery; and

a cooling device located for removing heat from both said combination inverter and transformer and said charger, wherein said cooling device comprises a heat sink located between said combination inverter and transformer and said charger, and wherein said heat sink partially wraps around said charger.

2. The power supply system according to claim 1, wherein said cooling device further comprises a fan.

3. The power supply system according to claim 1, wherein said combination inverter transformer comprises a combination inverter, isolation transformer and automatic transfer switch for providing alternating current to said peripheral devices from one of said battery and alternating current supplied to said AC input based on whether or not alternating current is supplied to said AC input.

4. The power supply system according to claim 1, further comprising an over-voltage relay connected between said AC input and said charger and connected to said battery terminal.

5. The power supply system according to claim 1, further comprising a control board connected to said battery terminal, said AC input and said charger, said control board for measuring at least one electrical characteristic of said battery and performing at least one calculation using the measured electrical characteristic.

6. The power supply system according to claim 5, wherein said control board includes a Hall-effect sensor for measuring current from said battery.

7. The power supply system according to claim 5, wherein said control board includes a controller for performing said at least one calculation and for storage of data.

8. The power supply system according to claim 5, wherein said control board includes a plurality of terminals for connection.

9. The power supply system according to claim 5, wherein said control board comprises a controller, a Hall-effect sensor, an over-voltage control relay, a miniature MOSFET for switching said over-voltage control relay, a communication connection and connection terminals.

10. The power supply system according to claim 1, further comprising the battery.

11. A mobile cart comprising:

a body;

a plurality of wheels connected to and supporting said body for rolling said body across a surface; and

a power supply system connected to said body for providing power to peripheral devices, the power supply system comprising;

an AC input;

a combination inverter and transformer connected between said AC input and a battery terminal for providing electrical current to peripheral devices;

a charger connected between said AC input and said battery terminal for charging a battery;

a cooling device located for removing heat from both said combination inverter and transformer and said charger, wherein said cooling device comprises a heat sink located between said combination inverter and transformer and said charger and said heat sink partially wraps around said charger; and

a peripheral output for connection of said peripheral devices.

12. The mobile cart according to claim 11, wherein said cooling device further comprises a fan.

13. The mobile cart according to claim 11, wherein said combination inverter and transformer comprises a combination inverter, isolation transformer and automatic transfer switch for providing alternating current to said peripheral devices from one of said battery and alternating current supplied to said AC input based on whether or not alternating current is supplied to said AC input.

14. The mobile cart according to claim 11, further comprising an over-voltage relay connected between said AC input and said charger and connected to said battery terminal.

15. The mobile cart according to claim 11, further comprising a control board connected to said battery terminal, said AC input and said charger, said control board for measuring at least one electrical characteristic of said battery and performing at least one calculation using the measured electrical characteristic.

16. The mobile cart according to claim 11, further comprising said battery.