Fast charging terminal

• US 9,509,160 B2
• Filed: 04/22/2014
• Issued: 11/29/2016
• Est. Priority Date: 11/19/2013
• Status: Active Grant

• Current Assignee: Columbia Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Huizhou TCL Mobile Communication Company Limited (TCL Technology Group Corp.)
• Inventors: Hu, Xuelong Ronald, Zhao, Shiqing, Luo, Dexiang Edward
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US14/421,682
• Publication Number:
  US 20150357836A1
• Time in Patent Office: 952 Days
• Field of Search: 320/107, 320/111, 320/125, 320/160
• US Class Current: 1/1
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A fast charging terminal is provided, which includes a battery, a USB interface, a switch module, a supply voltage detecting unit, a central processor, and a charging management unit. After the USB interface is connected to an intelligent charger, the switch module is switched on when the supply voltage outputted by the USB interface is within a safe supply voltage range such that the charging management unit converts the supply voltage and the supply current. The charging management unit decreases the supply voltage and increases the supply current to charge the battery.

Claims

1. A fast charging terminal, which is being charged with a charger, the fast charging terminal comprising:

a battery;

a general connection interface connected to the charger;

a supply voltage detecting unit connected to the general connection interface, for detecting a supply voltage outputted by the general connection interface;

a central processor receiving the supply voltage detected by the supply voltage detecting unit, for determining whether the detected supply voltage is within a safe supply voltage range; and

a charging management unit receiving the supply voltage outputted by the general connection interface when the central processor determines that the detected supply voltage is within the safe supply voltage range, for decreasing the supply voltage and increasing a supply current outputted by the general connection interface so as to fast charge the battery;

wherein the supply current outputted by the general connection interface is a nominal current of the general connection interface and the supply voltage outputted by the general connection interface is a voltage larger than a nominal voltage of the general connection interface.

2. The fast charging terminal according to claim 1, further comprising a switch module connected between the general connection interface and the charging management unit, the switch module being also connected to the central processor, wherein the central processor controls the switch module to establish a connection between the general connection interface and the charging management unit when the central processor determines that the detected supply voltage is within the safe supply voltage range, and the central processor controls the switch module to cut off the connection between the general connection interface and the charging management unit when the central processor determines that the detected supply voltage exceeds the safe supply voltage range.

3. The fast charging terminal according to claim 1, further comprising a voltage reducing unit disposed between the switch module and the charging management unit for decreasing the supply voltage outputted by the general connection interface.

4. The fast charging terminal according to claim 2, further comprising printed circuit board (PCB) wiring lines disposed among the switch module, the charging management unit, and the battery, wherein the width of the PCB wiring lines is wider than 3 mm.

5. The fast charging terminal according to claim 1, wherein the battery comprises lithium polymer battery cells.

6. The fast charging terminal according to claim 1, wherein the general connection interface comprises a Universal Serial Bus (USB) interface, of which the nominal current is 500 mA and the nominal voltage is 5V.

7. The fast charging terminal according to claim 1, wherein an output voltage of the charging management unit is controlled by the central processor in accordance with a supply voltage curve.

8. The fast charging terminal according to claim 1, wherein an output current of the charging management unit is controlled by the central processor in accordance with a supply current curve.

9. A fast charging terminal, which is being charged with an intelligent charger, the fast charging terminal comprising:

a battery;

a Universal Serial Bus (USB) interface;

a switch module;

a supply voltage detecting unit for detecting a supply voltage outputted by the USB interface;

a central processor for determining whether the supply voltage detected by the supply voltage detecting unit is within a safe supply voltage range, the central processor controlling the switch module to be switched on when the supply voltage is within the safe supply voltage range and the central processor controlling the switch module to be switched off when the supply voltage exceeds the safe supply voltage range; and

a charging management unit for decreasing the supply voltage and increasing a supply current outputted by the USB interface when the switch module is switched on by the central processor, so as to fast charge the battery;

wherein the supply voltage outputted by the USB interface is a voltage larger than a nominal voltage of the USB interface.

10. The fast charging terminal according to claim 9, wherein the USB interface is connected to the central processor via the supply voltage detecting unit and is connected to the battery sequentially via the switch module and the charging management unit, and the central processor is connected to the switch module.

11. The fast charging terminal according to claim 9, wherein the supply voltage detecting unit converts the supply voltage outputted by the USB interface and then transmits the converted supply voltage to the central processor.

12. The fast charging terminal according to claim 9, further comprising a voltage reducing unit disposed between the switch module and the charging management unit for decreasing the supply voltage outputted by the USB interface.

13. The fast charging terminal according to claim 9, further comprising printed circuit board (PCB) wiring lines disposed among the switch module, the charging management unit, and the battery, wherein the width of the PCB wiring lines is wider than 3 mm.

14. The fast charging terminal according to claim 9, wherein the battery comprises lithium polymer battery cells.