Power supply

• US 20050208344A1
• Filed: 02/27/2002
• Published: 09/22/2005
• Est. Priority Date: 02/27/2002
• Status: Abandoned Application

• Current Assignee: William Tan
• Original Assignee: William Tan
• Inventors: Tan, William
• Application Number:
  US10/506,149
• Publication Number:
  US 20050208344A1
• Time in Patent Office: Days
• US Class Current: 429/7
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: H02M 3/1588 comprising at least one synchronous rectifier element H02M3/1582, H02M3/1584 take precedence
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A power supply 1 for an electronic device comprising electric cells 7 arranged to generate an intermediate voltage Vx, and a voltage converter 30 coupled to the electric cells 7, the voltage converter 30 converting the intermediate voltage Vx to an output voltage Vo, wherein the converter 30 comprises a switch 14 to vary the output voltage Vo to match an input voltage of the electronic device.

Claims

1. A power supply comprising an electric cell arranged to generate an intermediate voltage, and voltage conversion means coupled to the electric cell, the voltage conversion means converting the intermediate voltage to an output voltage, wherein the conversion means comprises adjustment means to vary the output voltage.

2. A power supply according to claim 1, wherein the adjustment means comprises a manual switch.

3. A power supply according to claim 2, further comprising means to lock the switch.

4. A power supply according to claim 1, wherein the adjustment means comprises detection means to detect an input voltage of an electronic device coupled to the output voltage, in use.

14. A power supply according to claim 1, wherein the voltage conversion means is activated by a switch.

16. A power supply according to claim 1, wherein the electric cell is a lithium-ion cell.

17. A power supply according to claim 1, further comprising a number of electric cells.

18. A power supply according to claim 1, further comprising a housing.

19. A power supply according to claim 18, wherein the housing has length, width and thickness, the thickness being shorter than either one of width and length.

21. A power supply according to claim 1, wherein the voltage conversion means is a DC-DC voltage converter.

22. A power supply according to claim 1, further comprising deactivation means to reduce discharging of the electric cell when not coupled to an electric device.

5. A power supply comprising an electric cell arranged to generate an intermediate voltage, and voltage conversion means coupled to the electric cell, the voltage conversion means converting the intermediate voltage to an output voltage, wherein the conversion means comprises adjustment means to vary the output voltage, wherein the electric cell is rechargeable.

6. A power supply according to claim 5, further comprising charging means coupled to the electric cell to charge the electric cell.

7. A power supply according to claims 6, wherein the charging means is adapted to receive a plurality of input voltages.

8. A power supply according to claims 5, wherein the charging means further comprises means to monitor charging or charge status of the electric cell.

9. A power supply according to claim 8, further comprising a visual display device for displaying the charging or charge status of the electric cell.

10. A power supply according to claim 9, wherein the visual display device comprises a light emitting device.

11. A power supply according to claim 10, wherein the visual display device comprises a plurality of light emitting devices.

12. A power supply according to claim 9, wherein the visual display device comprises a graphic display.

13. A power supply according to claim 9, wherein the visual display device is activated by a switch.

15. A power supply comprising an electric cell arranged to generate an intermediate voltage, and voltage conversion means coupled to the electric cell, the voltage conversion means converting the intermediate voltage to an output voltage, wherein the conversion means comprises adjustment means to vary the output voltage, further comprising a sound generation device which is activated when the electric cell is at a predetermined charge level.

20. A housing according to claim, where in the shape of the housing is rectangular.