Charging apparatus and method thereof

• US 20060033472A1
• Filed: 08/10/2004
• Published: 02/16/2006
• Est. Priority Date: 08/10/2004
• Status: Active Grant

• Current Assignee: Chicony Power Technology Co. Ltd. (Chicony Electronics Company Limited)
• Original Assignee: Hipro Electronics Company Limited (Chicony Electronics Company Limited)
• Inventors: Wang, Chia Hua
• Granted Patent: US 7,294,990 B2
• Time in Patent Office: Days
• US Class Current: 320/128
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H02J 7/06 using discharge tubes or semiconductor devices
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A charging apparatus applied in a portable electronic product comprises a charging battery, a controlling chip, an adjusting transistor, a feedback circuit and a charger with modulateable output. The charger has an external alternating-current power source, and the charger provides a changeable voltage to the charging battery of the portable electronic product. Signals of electric quantities of the charging battery is captured by the feedback circuit to feedback to the charger to adjust its output voltage and then control the charger to charge the charging battery to achieve changeable voltage. Besides, only use the switch transistor to control charging the charging battery to reduce spare amounts and loss of circuit.

Claims

1. A charging apparatus, comprising a charging battery, a controlling chip, an adjusting transistor, a feedback circuit and a charger with modulateable output, said controlling chip detecting electric quantities of said charging battery and feedbacking signals of the electric quantities to said charger with modulateable output by said feedback circuit to adjust output voltage of said charger with modulateable output, and said controlling chip controlling said adjusting transistor to adjust the output voltage to charge said charging battery.

2. The charging apparatus of claim 1, wherein said charging apparatus is applied in a portable electronic product.

3. The charging apparatus of claim 1, wherein said controlling chip is a programmable chip.

4. The charging apparatus of claim 1, wherein said adjusting transistor is either of a transistor and a field effect transistor.

5. The charging apparatus of claim 1, wherein said charger with modulateable output has an external alternating-current power source capable of modulating output voltage and output current of said charger.

6. The charging apparatus of claim 1, wherein said charging battery, controlling chip, adjusting transistor, and feedback circuit are packed to a battery package type.

7. The charging apparatus of claim 1, wherein the output voltage is a little higher than an end voltage of said charging battery.

8. The charging apparatus of claim 1, wherein said charger with modulateable output responds to the signals of the electric quantities to modulate its output voltage.

15. The charging apparatus of claim 1, wherein said controlling chip with a constant voltage or constant current is a programmable chip.

9. A charging apparatus, comprising a charging battery, a controlling chip, a feedback circuit and a charger with modulateable output, said controlling chip detecting electric quantities of said charging battery and controlling said charger with modulateable output by said feedback circuit, said charger with modulateable output directly charging said charging battery.

10. The charging apparatus of claim 9, wherein said controlling chip controls said charger with modulateable output through said feedback circuit to directly charge said charging battery with a constant voltage.

11. The charging apparatus of claim 9, wherein said controlling chip controls said charger with modulateable output through said feedback circuit to directly charge said charging battery with a constant current.

12. The charging apparatus of claim 9, wherein said charger has an external alternating-current power source capable of modulating output voltage and output current of said charger.

13. The charging apparatus of claim 9, wherein said charging battery, controlling chip, and feedback circuit are packed to a battery package type.

14. The charging apparatus of claim 9, wherein said charging apparatus is applied in a portable electronic product.

16. A charging method comprising the steps of:

using a controlling chip to detect electric quantities of a charging battery and meanwhile determine whether said charging battery is needed to be charged;

controlling a charger with modulateable output through a feedback circuit by said controlling chip; and

adjusting output of said charger with modulateable output according to signals of said feedback circuit as a charging source of said charging battery.

17. The charging method of claim 16 comprising:

said controlling chip controlling an adjusting transistor to adjust output voltage of said charger to charge said charging battery.

18. The charging method of claim 16 comprising:

said controlling chip controlling said charger with modulateable output through said feedback circuit to directly charge said charging battery in a constant voltage.

19. The charging method of claim 16 comprising:

said controlling chip controlling said charger with modulateable output through said feedback circuit to directly charge said charging battery in a constant current.