SYSTEM AND METHOD FOR COMPATIBLE WIRED CHARGING AND WIRELESS CHARGING

• US 20120229084A1
• Filed: 03/15/2010
• Published: 09/13/2012
• Est. Priority Date: 11/25/2009
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Gu, Yunfeng
• Granted Patent: US 8,957,632 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

A system and method for enabling compatibility of wired charging with wireless charging are disclosed. The system includes an interface circuit, a wired charging unit and a wireless charging unit. The interface circuit is configured to connect the wired charging unit and the wireless charging unit to a power management unit; the wired charging unit is connected to the power management unit via an interface circuit and is configured to charge the power management unit by using a charging circuit in the power management unit; and the wireless charging unit is connected to the power management unit via the interface circuit and is configured to charge the power management unit by using the same charging circuit as that used by the wired charging unit. The method includes that an interface circuit connects a wired charging unit and a wireless charging unit to a power management unit, and the wireless charging unit and the wired charging unit use the same charging circuit in the power management unit to charge the power management unit. The system and method may avoid hidden dangers and guarantee display of the charging state of the terminal which is being charged in a wireless manner.

Claims

1. A system for enabling compatibility of wired charging with wireless charging, comprising:

a wireless charging unit, a wired charging unit and a power management unit, wherein the system further comprises an interface circuit, and wherein

the interface circuit is configured to connect both the wired charging unit and the wireless charging unit to the power management unit;

the wired charging unit is connected to the power management unit via the interface circuit and is configured to charge the power management unit by using a charging circuit in the power management unit; and

the wireless charging unit is connected to the power management unit via the interface circuit and is configured to charge the power management unit by using the charging circuit in the power management unit.

2. The system according to claim 1, wherein the wired charging unit is further configured to charge the power management unit via the interface circuit and further wherein a charging state is entered and displayed, where there is an output from the wired charging unit and no output from the wireless charging unit.

3. The system according to claim 1, wherein the wireless charging unit is further configured to charge the power management unit via the interface circuit and further wherein a charging state is entered and displayed, where there is an output from the wireless charging unit and no output from the wired charging unit.

4. The system according to claim 1, wherein the wireless charging unit is further configured to turn off an output from the wireless charging unit in response to detection of an access signal of the wired charging unit from the interface circuit, where there are outputs from both the wireless charging unit and the wired charging unit;

and

the wired charging unit is further configured to charge the power management unit via the interface circuit and further wherein a charging state is entered and displayed, where the wireless charging unit enters a no output state.

5. A method for enabling compatibility of wired charging with wireless charging, comprising:

connecting, by an interface circuit, both a wired charging unit and a wireless charging unit to a power management unit; and

charging, by the wireless charging unit or the wired charging unit, the power management unit through a charging circuit in the power management unit.

6. The method according to claim 5, wherein the interface circuit is comprises a path for charging the power management unit by the wired charging unit and the wireless charging unit.

7. The method according to claim 6, wherein the charging the power management unit further comprises:

where there is an output from the wired charging unit and no output from the wireless charging unit, charging, by the wired charging unit, the power management unit via the interface circuit wherein a charging state is entered and displayed.

8. The method according to claim 6, wherein the charging the power management unit further comprises:

where there is an output from the wireless charging unit and no output from the wired charging unit, charging, by the wireless charging unit, the power management unit via the interface circuit wherein a charging state is entered and displayed.

9. The method according to claim 6, wherein the charging the power management unit further comprises:

where there are outputs from both the wireless charging unit and the wired charging unit, turning off, by the wireless charging unit, the output from the wireless charging unit in response to detection of an access signal of the wired charging unit from the interface circuit; and

charging, by the wired charging unit, the power management unit via the interface circuit wherein a charging state is entered and displayed.