WIRED/WIRELESS CHARGING APPARATUS AND CIRCUIT

• US 20130278207A1
• Filed: 04/18/2013
• Published: 10/24/2013
• Est. Priority Date: 04/20/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: YOO, Jeonghoon
• Granted Patent: US 9,570,936 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

A wired/wireless charging apparatus capable of performing wired charging and wireless charging and a circuit are provided. The wired/wireless charging apparatus includes a body including a wired charging circuit for wired charging, a wireless charging circuit for wireless charging, and a battery mounting space a cover coupled with the body and including a transmission coil generating a magnetic field for the wireless charging, wherein the body and the cover including a contact unit for electrically connecting the transmission coil to the wireless charging circuit.

Claims

1. A wired/wireless charging apparatus comprising:

a body including a wired charging circuit for wired charging, a wireless charging circuit for wireless charging, and a battery mounting space;

a cover coupled with the body and including a transmission coil generating a magnetic field for the wireless charging,

wherein the body and the cover includes a contact unit for electrically connecting the transmission coil to the wireless charging circuit.

2. The wired/wireless charging apparatus of claim 1, wherein the cover is coupled with the body in one of a sliding scheme and an opening/closing scheme in which the cover is open or closed based on a rotating axis.

3. The wired/wireless charging apparatus of claim 2, wherein the contact unit comprises:

a contact pad provided at the cover; and

a contact terminal provided at the body,

wherein the contact terminal is electrically connected to the contact pad when the cover is closed and the contact terminal is electrically isolated from the contact pad when the cover is open.

4. The wired/wireless charging apparatus of claim 3, wherein the contact pad includes a metal pad of a predetermined shape and the contact terminal includes a metal terminal having elasticity protruding to an outer side of the body.

5. The wired/wireless charging apparatus of claim 2, wherein the contact unit comprises a flexible printed circuit board having two sides, one side of the flexible printed circuit board connected to the transmission coil and the other side of the flexible printed circuit board connected to the wireless charging circuit.

6. The wired/wireless charging apparatus of claim 1, further comprising a mount mounting a portable terminal at a predetermined angle.

7. The wired/wireless charging apparatus of claim 1, wherein the cover further comprises a protrusion guiding a portable terminal so as not to be moved when the portable terminal is placed on the cover.

8. The wired/wireless charging apparatus of claim 1, further comprising:

a charging case including a reception coil generating an induction current by the magnetic field from the transmission coil and an interface unit connected to a portable terminal in a wired scheme,

wherein the charging case transmits the induction current to the portable terminal through the interface unit.

9. The wired/wireless charging apparatus of claim 8, wherein the charging case includes a receptacle in which the portable terminal is disposed and the charging case protects the portable terminal.

10. A wired/wireless charging circuit comprising:

a power input unit connected to a power supply;

a voltage down converter down-converting an output voltage of the power input unit;

a wired charging unit generating a charged current using output power of the voltage down converter;

a battery contact unit connected to a battery in a wired scheme to transmit the charged current from the wired charging unit to a battery connected in a wired scheme;

a wireless charging unit converting output power of the power supply into Alternating Current (AC) power;

a transmission coil generating a magnetic field based on the AC power from the wireless charging unit; and

a contact unit electrically connecting the transmission coil to the wireless charging unit.

11. The wired/wireless charging circuit of claim 10, further comprising:

a detector recognizing a type of the power supply connected to the power input unit;

a first switch provided between the power input unit and the wired charging unit; and

a controller turning-on the voltage down converter and turning-off the first switch so that the voltage down converter down-converts a voltage from the power input unit to thereby perform wired charging when connection of a power supply having an output voltage equal to or greater than a preset reference value is recognized by the detector, and turning-on the wireless charging unit so that wireless charging is performed using power from the power input unit.

12. The wired/wireless charging circuit of claim 11, wherein the controller turns-off the voltage down converter and the wireless charging unit and turns-on the first switch so that only the wired charging is performed when connection of a power supply having an output voltage less than the preset reference value is recognized by the detector.

13. The wired/wireless charging circuit of claim 11, further comprising:

a second switch provided between the power input unit and the wireless charging unit; and

a voltage up converter up-converting the output voltage of the power input unit.

14. The wired/wireless charging circuit of claim 13, wherein the controller turns-on the voltage down converter and turns-off the first switch so that the voltage down converter down-converts the power from the power input unit to thereby perform the wired charging when connection of a power supply having an output voltage equal to or greater than the preset reference value is recognized by the detector, and turns-on the second switch and turns-off the voltage up converter so that wireless charging is performed using the power from the power input unit.

15. The wired/wireless charging circuit of claim 13, wherein the controller turns-off the voltage down converter and turns-on the first switch so that the wired charging is performed using the power from the power input unit when connection of a power supply having an output voltage less than the preset reference value is recognized by the detector, and turns-on the voltage up converter so that the voltage up converter up-converts the power from the power input unit and turns-off the second switch so that the wireless charging is performed using the power converted by the voltage up converter.