Charging System Having Circuit for Delaying Power Supply

• US 20150008869A1
• Filed: 03/26/2014
• Published: 01/08/2015
• Est. Priority Date: 07/02/2013
• Status: Active Grant

• Current Assignee: SPS Incorporated
• Original Assignee: SPS Incorporated
• Inventors: KIM, Hyun-Jun, YOUN, Dae-Young, JEON, Eun-Min, KIM, Jung Gyo, PARK, Hyun-Soo
• Granted Patent: US 9,537,334 B2
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

Provided is a charging system having a circuit for delaying power supply, and more particularly, a charging system having a circuit for delaying power supply installed on a side of a power supply apparatus, wherein the circuit for delaying power supply prevents a spark from being generated when an electronic device and the power supply apparatus are connected to each other.

The circuit for delaying power supply blocks the power supply to the Vcc power terminal in the case in which the GND ground power terminal and the D signal terminal are not in an electrically shorted state and releases the blocking of the power supply to the Vcc power terminal because an operation of the transistor is changed and a charging state of the capacitor is changed in the case in which the GND ground power terminal and the D signal terminal become the electrically shorted state.

Claims

1. A charging system having a circuit for delaying power supply, the charging system comprising:

an electronic device having a pattern electrode concentrically formed thereon and having a magnet of the electronic device; and

a charging apparatus having a plurality of pin terminals formed therein and having a magnet of the charging apparatus,

wherein the magnet of the electronic device and the magnet of the charging apparatus are magnetically coupled to each other to thereby contact the pattern electrode and the plurality of pin terminals,

the plurality of pin terminal includes a Vcc power terminal, a GND ground power terminal, and a D signal terminal,

the pattern electrode includes a Vcc electrode and a GND electrode,

the GND electrode of the pattern electrode is formed of one electrode which is simultaneously in contact with the GND ground power terminal and the D signal terminal,

the charging apparatus includes the circuit for delaying power supply,

the circuit for delaying power supply includes a transistor and a capacitor, and

the circuit for delaying power supply blocks the power supply to the Vcc power terminal in the case in which the GND ground power terminal and the D signal terminal are not in an electrically shorted state and releases the blocking of the power supply to the Vcc power terminal because an operation of the transistor is changed and a charging state of the capacitor is changed in the case in which the GND ground power terminal and the D signal terminal become the electrically shorted state.

2. The charging system of claim 1, wherein the magnet of the electronic device and the magnet of the charging apparatus have a ring shape.

3. The charging system of claim 1, wherein the electronic device includes an electrode part,

the electrode part includes a circular substrate formed of a circular double-sided printed circuit board (PCB),

the Vcc electrode and the GND electrode are formed on a top surface of the circular substrate,

two pads are formed on a bottom surface of the circular substrate and are connected to lead wires, and

the Vcc electrode and the GND electrode are connected to the two pads through two through-holes formed in the circular substrate.

4. The charging system of claim 1, wherein the charging apparatus includes a body part of the charging apparatus and a pin terminal part.

5. The charging system of claim 4, wherein the circuit for delaying power supply is installed on the body part of the charging apparatus.

6. The charging system of claim 4, wherein the circuit for delaying power supply is installed on the pin terminal part.

7. A charging system having a circuit for delaying power supply, the charging system comprising:

an electronic device having a pattern electrode concentrically formed thereon and having a magnet of the electronic device; and

a charging apparatus having a plurality of pin terminals and a switch formed therein and having a magnet of the charging apparatus,

wherein the magnet of the electronic device and the magnet of the charging apparatus are magnetically coupled to each other to thereby contact the pattern electrode and the plurality of pin terminals and press the switch,

the plurality of pin terminals include a Vcc power terminal and a GND ground power terminal,

the pattern electrode includes a Vcc electrode and a GND electrode,

the charging apparatus includes the circuit for delaying power supply,

the circuit for delaying power supply includes a transistor and a capacitor, and

the circuit for delaying power supply blocks the power supply to the Vcc power terminal in the case in which the switch is not pressed and releases the blocking of the power supply to the Vcc power terminal because an operation of the transistor is changed and a charging state of the capacitor is changed in the case in which the switch is pressed.

8. The charging system of claim 7, wherein the magnet of the electronic device and the magnet of the charging apparatus have a ring shape.

9. The charging system of claim 7, wherein the electronic device includes an electrode part,

the electrode part includes a circular substrate formed of a circular double-sided printed circuit board (PCB), the Vcc electrode and the GND electrode are formed on a top surface of the circular substrate,

two pads are formed on a bottom surface of the circular substrate and are connected to lead wires, and

the Vcc electrode and the GND electrode are connected to the two pads through two through-holes formed in the circular substrate.

10. The charging system of claim 7, wherein the charging apparatus includes a body part of the charging apparatus and a pin terminal part.

11. The charging system of claim 10, wherein the circuit for delaying power supply is installed on the body part of the charging apparatus.

12. The charging system of claim 10, wherein the circuit for delaying power supply is installed on the pin terminal part.