Charging apparatus and wireless charging apparatus

Patent metadata

Field	Value
Publication number	US-9236759-B2
Application number	US-201313829559-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Nov 15, 2012
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

There is provided a charging apparatus and a wireless charging apparatus that facilitate display of a fully charged state using a monochromatic display device. The charging apparatus and the wireless charging apparatus include a power supply unit supplying a charging power, a charging unit supplying the charging power to an external charging target device, a charging control unit controlling a charging state of the charging unit, a display unit that displays the charging state under the control of the charging control unit and, when the charging target device is in a fully charged state, stops an operation of displaying the charging state, and a delay unit that delays stopping the operation of the display unit that displays the charging state, for a previously set period of time, when the charging target device in the fully charged state is recharged.

First claim

What is claimed is:

1. A charging apparatus comprising:
a power supply unit supplying charging power;
a charging unit supplying the charging power from the power supply unit to an external charging target device;
a charging control unit controlling a charging state of the charging unit;
a display unit that displays the charging state under the control of the charging control unit and, when the charging target device is in a fully charged state, stops an operation of displaying the charging state; and
a delay unit that delays stopping the operation of the display unit that displays the charging state, during a previously set period of time, when the charging target device in the fully charged state is recharged.

2. The charging apparatus of claim 1 , wherein the display unit is a monochromatic light emitting diode.

3. The charging apparatus of claim 1 , further comprising a detection unit detecting a state of the charging power supplied to the charging unit from the power supply unit.

4. The charging apparatus of claim 2 , wherein the display unit emits light of a previously set color when the charging target device is charged, and stops emitting light when the charging target device is fully charged.

5. The charging apparatus of claim 1 , wherein the delay unit includes:
a switch connected to the display unit in parallel;
a first resistor connected between an input terminal of a control signal of the charging control unit and a drain of the switch;
a diode connected between the drain of the switch and the first resistor to transmit the control signal; and
a second resistor and a capacitor connected to a gate of the switch and determining a delay time along with a gate-source threshold voltage of the switch.

6. A wireless charging apparatus comprising:
a power supply unit supplying charging power;
a charging unit supplying the charging power from the power supply unit to an external charging target device in a previously set wireless manner;
a charging control unit that controls a charging state of the charging unit;
a display unit that displays the charging state under the control of the charging control unit and, when the charging target device is in a fully charged state, stops an operation of displaying the charging state; and
a delay unit that delays stopping the operation of the display unit that displays the charging state, for a previously set period of time, when the charging target device in the fully charged state is recharged.

7. The wireless charging apparatus of claim 6 , wherein the charging unit includes:
a coil unit transmitting the charging power to the charging target device according to a magnetic induction effect; and
a switching unit that controls an operation of the coil unit transmitting the charging power.

8. The wireless charging apparatus of claim 6 , wherein the display unit is a monochromatic light emitting diode.

9. The wireless charging apparatus of claim 6 , further comprising a detection unit detecting a state of the charging power supplied to the charging unit from the power supply unit.

10. The wireless charging apparatus of claim 8 , wherein the display unit emits light of a previously set color when the charging target device is charged, and stops emitting light when the charging target device is fully charged.

11. The wireless charging apparatus of claim 6 , wherein the delay unit includes:
a switch connected to the display unit in parallel;
a first resistor connected between an input terminal of a control signal of the charging control unit and a drain of the switch;
a diode connected between the drain of the switch and the first resistor to transmit the control signal; and
a second resistor and a capacitor connected to a gate of the switch and determining a delay time along with a gate-source threshold voltage of the switch.

Assignees

• Samsung Electro Mech

Inventors

• Park Yong Woon
• Han Chang Mok
• Kim Tae Sung
• Sung Jae Suk

Classifications

• H02J7/825 Primary

  Detection of fully charged condition · CPC title

• H02J7/025 Primary

  Electricity · mapped topic

• H02J5/005

  Electricity · mapped topic

• H02J7/0047

  Electricity · mapped topic

• H02J50/10

  using inductive coupling · CPC title