Charging device, and portable electronic device employing the same, and charging system

• US 8,350,524 B2
• Filed: 09/22/2009
• Issued: 01/08/2013
• Est. Priority Date: 04/16/2009
• Status: Active Grant

• Current Assignee: Chi Mei Communication Systems Incorporated (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industrial Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Chi Mei Communication Systems Incorporated (Hon Hai Precision Industry Co., Ltd.), Shenzhen Futaihong Precision Industrial Company Limited (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kwong, Pao-Lam
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): GRANT, ROBERT J
• Application Number:
  US12/564,157
• Publication Number:
  US 20100264872A1
• Time in Patent Office: 1,204 Days
• Field of Search: None
• US Class Current: 320/108
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A charging device for charging a portable electronic device includes a voltage regulating unit and a charger body electrically connected to the voltage regulating unit. The voltage regulating unit is configured for receiving electric energy from an external power source and converting the external power into a stable power. The charger body receives the stable voltage and transfers the electric energy to the portable electronic device via inductive coupling to charge the portable electronic device.

Claims

1. A charging device for charging a portable electronic device, comprising:

a voltage regulating unit configured for converting an external voltage into a stable voltage; and

a charger body electrically connected to the voltage regulating unit, wherein the charger body comprises a first shielding portion and a magnet located in the first shielding portion to divide the first shielding portion into two parts, the magnet magnetizes the first shielding portion, and the charging device is attached to the portable electronic device via magnetic force generated by the first shielding portion;

the charger body receives the stable voltage and charges the portable electronic device via inductive coupling.

2. The charging device as claimed in claim 1, wherein the charger body comprises a first magnetic core and a primary coil wrapped on the first magnetic core, the primary coil electrically connected to the voltage regulating unit, and the first magnetic core is made from magneto-conductivity material.

3. The charging device as claimed in claim 2, wherein the first shielding portion is configured for isolating electromagnetic waves when charging the battery to prevent interference, the first magnetic core is located in the first shielding portion, and the magnet is located at the middle part of the first shielding portion to divide the first shielding portion into two symmetrical parts about the magnet.

4. The charging device as claimed in claim 3, wherein the charger body further comprises an insulation layer located between the first magnetic core and the first shielding portion, and the insulation layer is made from heat insulation material and has the same shape with the first shielding portion and the first magnetic core.

5. The charging device as claimed in claim 1, wherein the charger body further comprises a housing, the first shielding portion, the first magnetic core, the insulation layer, the primary coil are located inside the housing, the housing defines a concave section therein, the concave section is used to accommodate one part of the portable electronic device.

8. The charging system as claimed in claim 1, wherein the charger body further comprises a first magnetic core and a primary coil wrapped on the first magnetic core and electrically connected to the voltage regulating unit, the primary coil is configured for receiving the electric energy from the voltage regulating unit and generating the induced current, and the first magnetic core is made from magneto-conductivity material.

9. The charging system as claimed in claim 8, wherein the first shielding portion is configured for insolating electromagnetic waves when charging the battery to prevent interference and an insulation layer mounted in the first shielding portion, the first magnetic core is located in the first shielding portion, the magnet is located at the middle pan of the first shielding portion to divide the first shielding portion into two symmetrical parts about the magnet, and the insulation layer is made from heat insulation material and has the same shape with the first shielding portion and the first magnetic core.

12. The charging system as claimed in claim 9;

wherein the charger body further comprise a housing, the first shielding portion, the first magnetic core, the insulation layer, and the primary coil are located inside the housing, the housing defines a concave section therein.

13. The charging system as claimed in claim 12, wherein the main body defines a convex section thereon, the convex section is formed at one end of the main body, the convex section is use to engage with the concave section to secure the charging device.

6. A charging system, comprising:

a charging device comprising;

a charger body configured for generating an induced current, comprising;

a first shielding portion; and

a magnet located in the first shielding portion, wherein the magnet divides the first shielding portion into two parts and magnetizes the two parts of the first shielding portion; and

a portable electronic device comprising;

an electric energy receiving unit configured for receiving electric energy from the charger body via inductive coupling and inducing an induced current to charge a battery, and the charging device being attached to the portable electronic device via magnetic force generated by the first shielding portion.

7. The charging system as claimed in claim 6, wherein the charging device further comprises a voltage regulating unit for receiving electric energy from an external power source and converting the external power into a the stable voltage.

10. The charging system as claimed in claim 7, wherein the electric energy receiving unit comprises a secondary coil electrically connected to the current converting unit and a second magnetic core wrapped by the secondary coil, the primary coil is coupled with the secondary coil due to inductive coupling to induce the induced current in the secondary coil.

11. The charging system as claimed in claim 10, wherein the electric energy receiving unit further comprises a second shielding portion for insolating electromagnetic waves and an insulation layer located between the second magnetic core and the second shielding portion, the second magnetic core is located in the second shielding portion.

14. The charging system as claimed in claim 6, wherein the portable electronic device further comprises a current converting unit electrically connected to the electric energy receiving unit, the current convening unit is configured for converting the induced current into DC, a constant voltage and a constant current.

15. The charging system as claimed in claim 14, wherein the portable electronic device further comprises a power management unit electrically connected to the current converting unit, the power management unit is configured for processing the constant voltage and the constant current to charge the battery.