Quick charging method, power adapter and mobile terminal

• US 10,326,291 B2
• Filed: 11/21/2018
• Issued: 06/18/2019
• Est. Priority Date: 11/11/2014
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Inventors: Zhang, Jialiang
• Primary Examiner(s): Muralidar, Richard V
• Application Number:
  US16/198,662
• Publication Number:
  US 20190157886A1
• Time in Patent Office: 209 Days
• Field of Search: 320103, 320152, 320157-159, 320162-164
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage

Abstract

The present disclosure relates to a quick charging method, a mobile terminal and a power adapter. The method includes: sending, by a mobile terminal, a first instruction indicating that the mobile terminal is operable under the quick charging mode to the power adapter through the at least one data line in the USB interface, the first instruction being configured for instructing the power adapter to adjust an output of the power adapter based on the received first instruction; and receiving, by the mobile terminal, a charging current delivered by the at least one power line and corresponding to the quick charging mode from the power adapter, so as to charge a battery in the mobile terminal.

Claims

1. A quick charging method, wherein the method is executed by a mobile terminal configured for coupling with a power adapter via a Universal Serial Bus (USB) interface of the mobile terminal, at least one power line located in the USB interface is configured for charging the mobile terminal, and at least one data line located in the USB interface is configured for establishing a bi-directional communication between the power adapter and the mobile terminal, the bi-directional communication refer to the power adapter and the mobile terminal exchanging information between each other;

the mobile terminal supports a normal charging mode and a second charging mode, and a charging current of the quick charging mode is greater than a charging current of the normal charging mode, the method comprising;

the mobile terminal sending a first instruction to the power adapter through the at least one data line in the USB interface, the first instruction being configured for instructing the power adapter to start the quick charging mode;

the mobile terminal sending a second instruction to the power adapter through the at least one data line in the USB interface, the second instruction being configured for indicating a charging voltage corresponding to the quick charging mode;

wherein, the mobile terminal determines the charging voltage corresponding to the quick charging mode according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature;

the mobile terminal sending a third instruction to the power adapter through the at least one data line in the USB interface, the third instruction being configured for indicating the charging current corresponding to the quick charging mode;

wherein, the mobile terminal determines the charging current corresponding to the quick charging mode according to the operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature;

the mobile terminal receiving the charging voltage and the charging current corresponding to the quick charging mode from the power adapter, so as to charge a battery in the mobile terminal; and

the mobile terminal sending a fourth instruction to the power adapter through the at least one data line in the USB interface during a process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating a current voltage of the battery in the mobile terminal such that the power adapter adjusts the charging current based on the current voltage of the battery, or determines whether there is a poor connection of the USB interface based on the charging voltage from the power adapter and the current voltage of the battery.

2. A quick charging method, wherein the method is executed by a power adapter configured for coupling with a mobile terminal via a Universal Serial Bus (USB) interface of the mobile terminal;

at least one power line located in the USB interface is configured for being provided to the power adapter to charge the mobile terminal, and at least one data line located in the USB interface is configured for establishing a bi-directional communication between the power adapter and the mobile terminal, the bi-directional communication refer to the power adapter and the mobile terminal exchange information between each other;

the power adapter supports a normal charging mode and a quick charging mode, and a charging current of the quick charging mode is greater than a charging current of the normal charging mode, the method comprising;

the power adapter receiving a first instruction from the mobile terminal through the at least one data line in the USB interface, the first instruction being configured for instructing the power adapter to start the quick charging mode;

the power adapter receives a second instruction from the mobile terminal through the at least one data line in the USB interface, the second instruction being configured for indicating a charging voltage corresponding to the quick charging mode;

wherein, the charging voltage corresponding to the quick charging mode indicated by the second instruction is obtained by the mobile terminal according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature;

the power adapter receiving a third instruction from the mobile terminal through the at least one data line in the USB interface, the third instruction being configured for indicating the charging current corresponding to the quick charging mode;

wherein, the charging current corresponding to the quick charging mode indicated by the second instruction is obtained by the mobile terminal according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature;

the power adapter adjusting a charging current to the charging current corresponding to the quick charging mode, so as to charge the mobile terminal;

the power adapter receiving a fourth instruction from the mobile terminal through the at least one data line in the USB interface during a process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating a current voltage of a battery in the mobile terminal; and

the power adapter adjusting the charging current based on the current voltage of the battery in the mobile terminal.

3. The method of claim 2, wherein the power adapter adjusting the charging current based on the current voltage of the battery in the mobile terminal comprises:

the power adapter adjusting the charging current of the power adapter to the charging current corresponding to the current voltage of the battery, based on the current voltage of the battery, and a preset correspondence between the battery voltage and the charging current.

4. The method of claim 2, wherein the method further comprises:

the power adapter receiving the fourth instruction from the mobile terminal through the at least one data line in the USB interface during a process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating the current voltage of the battery in the mobile terminal; and

the power adapter determining whether there is a poor connection of the USB interface based on the charging voltage of the power adapter and the current voltage of the battery.

5. A mobile terminal, wherein the mobile terminal is configured for coupling with a power adapter via a Universal Serial Bus (USB) interface of the mobile terminal, at least one power line located in the USB interface is configured for charging the mobile terminal, and at least one data line located in the USB interface is configured for establishing a bi-directional communication between the power adapter and the mobile terminal, the bi-directional communication refer to the power adapter and the mobile terminal exchange information between each other;

the mobile terminal supports a normal charging mode and a quick charging mode, and a charging current of the quick charging mode is greater than a charging current of the normal charging mode, the mobile terminal comprising;

a communication unit configured for sending a second instruction to the power adapter through the at least one data line in the USB interface, the second instruction being configured for indicating a charging voltage corresponding to the quick charging mode, and sending a third instruction to the power adapter through the at least one data line in the USB interface, the third instruction being configured for indicating the charging current corresponding to the quick charging mode, and sending a first instruction to the power adapter through the at least one data line in the USB interface, the first instruction being configured for instructing the power adapter to start the quick charging mode, wherein, the mobile terminal determines the charging voltage and the charging current corresponding to the quick charging mode according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature;

a charging unit configured for receiving the charging current corresponding to the second charging mode from the power adapter, so as to charge a battery in the mobile terminal; and

the communication unit is further configured for sends a fourth instruction to the power adapter through the at least one data line in the USB interface during a process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating a current voltage of the battery in the mobile terminal such that the power adapter adjusts the charging current based on the current voltage of the battery, or determines whether there is a poor connection of the USB interface based on the charging voltage from the power adapter and the current voltage of the battery.

6. A power adapter, wherein the power adapter is configured for coupling with a mobile terminal via a Universal Serial Bus (USB) interface of the mobile terminal;

at least one power line located in the USB interface is configured for being provided to the power adapter to charge the mobile terminal, and at least one data line located in the USB interface is configured for establishing a bi-directional communication between the power adapter and the mobile terminal, the bi-directional communication refer to the power adapter and the mobile terminal exchange information between each other;

the power adapter supports a normal charging mode and a quick charging mode, and a charging current of the quick charging mode is greater than a charging current of the normal charging mode, the power adapter comprising;

a communication unit configured for receiving a second instruction from the mobile terminal through the at least one data line in the USB interface, the second instruction being configured for indicating a charging voltage corresponding to the quick charging mode, and receiving a third instruction from the mobile terminal through the at least one data line in the USB interface, the third instruction being configured for indicating the charging current corresponding to the quick charging mode, and receiving a first instruction from the mobile terminal through the at least one data line in the USB interface, the first instruction being configured for instructing the power adapter to start the quick charging mode, wherein, the charging voltage corresponding to the quick charging mode indicated by the second instruction is obtained by the mobile terminal according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature, the charging current corresponding to the quick charging mode indicated by the third instruction is obtained by the mobile terminal according to operating parameters, of the mobile terminal, comprising battery power, voltage, and temperature also; and

a current adjusting unit configured for adjusting a charging current to the current corresponding to the quick charging mode, so as to charge the mobile terminal;

the communication unit is further configured for receiving a fourth instruction sent by the mobile terminal through the at least one data line in the USB interface during a process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating a current voltage of a battery in the mobile terminal; and

the current adjusting unit is further configured for adjusting the charging current based on the current voltage of the battery in the mobile terminal.

7. The power adapter of claim 6, wherein the current adjusting unit is configured for adjusting the charging current of the power adapter to the charging current corresponding to the current voltage of the battery, based on the current voltage of the battery, and a preset correspondence between the battery voltage and the charging current.

8. The power adapter of claim 6, wherein the communication unit is further configured for receiving a fourth instruction sent by the mobile terminal through the at least one data line in the USB interface during the process of the power adapter charges the mobile terminal by using the quick charging mode, the fourth instruction being configured for indicating the current voltage of the battery in the mobile terminal;

and

the power adapter determines whether there is a poor connection of the USB interface based on the charging voltage of the power adapter and the current voltage of the battery.