System and method for compatible wired charging and wireless charging

• US 8,957,632 B2
• Filed: 03/15/2010
• Issued: 02/17/2015
• Est. Priority Date: 11/25/2009
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Gu, Yunfeng
• Primary Examiner(s): GARBOWSKI, LEIGH M
• Application Number:
  US13/509,961
• Publication Number:
  US 20120229084A1
• Time in Patent Office: 1,800 Days
• Field of Search: None
• 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 and a wired charging unit coupled to a power management unit by an interface circuit;

the wired charging unit configured to charge the power management unit using a charging circuit in the power management unit;

the wireless charging unit configured to charge the power management unit by using the charging circuit in the power management unit;

the wireless charging unit further configured to autonomously 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 further configured to charge the power management unit via the interface circuit so as to cause a terminal in which the power management unit is located to enter a charging state normally and display the charging state on the terminal, after the wireless charging unit enters a no output state.

2. 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;

wherein where there are outputs from both the wireless charging unit and the wired charging unit, the wireless charging unit autonomously turns off 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 after the wireless charging unit enters a no output state, the wired charging unit charges the power management unit via the interface circuit so as to cause a terminal in which the power management unit is located to enter a charging state normally and display the charging state on the terminal.

3. The method according to claim 2, wherein the interface circuit comprises a path for charging the power management unit by the wired charging unit and the wireless charging unit.