Electronic device and charging method thereof

Patent metadata

Field	Value
Publication number	US-2018166902-A1
Application number	US-201715837057-A
Country	US
Kind code	A1
Filing date	Dec 11, 2017
Priority date	Dec 13, 2016
Publication date	Jun 14, 2018
Grant date	—

Abstract

An electronic device includes an energy storage unit, a charge pump circuit, a charging circuit, and a controller. The charge pump circuit is electrically connected to the power supply, and the power supply is configured to receive the input electrical energy. The charging circuit is electrically connected between the charge pump circuit and the energy storage unit. The controller is electrically connected with the power supply, the charge pump circuit, and the charging circuit respectively, and the controller controls the charge pump circuit and the charging circuit to switch among a plurality of charging modes according to compatibility information of the power supply.

First claim

What is claimed is:

1 . An electronic device comprising:
an energy storage unit; a charge pump circuit, electrically connected to a power supply, and the power supply is configured to receive an input electrical energy; a charging circuit, electrically connected between the charge pump circuit and the energy storage unit; and a controller, electrically connected with the power supply, the charge pump circuit, and the charging circuit, respectively, the controller controls the charge pump circuit and the charging circuit to switch among a plurality of charging modes according to compatibility information of the power supply.

2 . The electronic device according to claim 1 , wherein the charging modes includes a high-efficiency charging mode, when the controller switches the charge pump circuit and the charging circuit to the high-efficiency charging mode, the charge pump circuit converts the input electrical energy into a converted electrical energy, and the charging circuit receives the converted electrical energy and adjusts a voltage of the converted electrical energy to generate a charging electrical energy to charge the energy storage unit.

3 . The electronic device according to claim 1 , wherein the charging modes further include a direct charging mode, when the controller switches the charge pump circuit and the charging circuit to the direct charging mode, the charge pump circuit converts the input electrical energy into a converted electrical energy, two ends of the charging circuit are connected to output the converted electrical energy to the energy storage unit, and the energy storage unit is charged via the converted electrical energy.

4 . The electronic device according to claim 1 , wherein the charging modes further include a normal charging mode, when the controller switches the charge pump circuit and the charging circuit to the normal charging mode, two ends of the charge pump circuit are connected to convert the input electrical energy into the charging circuit, and the charging circuit adjusts the voltage of the input electrical energy to generate and output a charging electrical energy to the energy storage unit, and the energy storage unit is charged via the charging electrical energy.

5 . The electronic device according to claim 1 , wherein the controller is configured to detect whether the power supply supports the power delivery specification (PD) and whether the power supply includes a vendor defined message (VDM), and the controller controls the electronic device switch among the charging modes accordingly.

6 . A charging method, for charging an energy storage unit of an electronic device, the charging method comprising:
providing an input electrical energy to an electronic device via a power supply; detecting whether the power supply supports a power delivery specification (PD); detecting whether the power supply includes a vendor defined message (VDM); and controlling the electronic device to switch among a plurality of charging modes according to whether the power supply supports the PD and whether the power supply includes the VDM.

7 . The charging method according to claim 6 , wherein when the power supply supports the PD and includes the VDM, the charging method comprises:
detecting whether the power supply supports a constant voltage and constant current (CV/CC) function, and switching the electronic device to the high-efficiency charging mod when the power supply does not support the CV/CC function.

8 . The charging method according to claim 7 , wherein when the power supply supports the CV/CC function, the charging method comprises:
detecting whether an equivalent impedance of the connection circuit between the power supply and the electronic device is higher than a preset threshold value, and switching the electronic device to the high-efficiency charging mode when the equivalent impedance is higher than the preset threshold value.

9 . The charging method according to claim 8 , wherein when the equivalent impedance is less than the preset threshold value, the power supply is switched to a constant voltage mode, the charging method further comprises:
determining whether a voltage of the power supply supports a voltage that higher than two times of a full charging voltage of the energy storage unit in the constant voltage mode, and charging the energy storage unit the voltage two times of the full charging voltage when the power supply supports a voltage that higher than two times of the full charging voltage of the energy storage unit.

10 . The charging method according to claim 7 , wherein when the power supply is in the high-efficiency charging mode, the charging method further comprises:
converting the input electrical energy into a converted electrical energy; and adjusting a voltage of the converted electrical energy to generate a charging electrical energy to charge the energy storage unit.

Assignees

• Asustek Comp Inc

Inventors

• Huang Yi-Ming
• Shen Feng-Chi
• Lo Chien-Chung
• Wu Shin-Hong

Classifications

• H02J7/933

  the cycle being controlled or terminated in response to electric parameters · CPC title

• H02J2207/20

  Charging or discharging characterised by the power electronics converter · CPC title

• H02M3/158

  including plural semiconductor devices as final control devices for a single load · CPC title

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title