Charging control method and mobile terminal

• US 10,389,153 B2
• Filed: 01/03/2017
• Issued: 08/20/2019
• Est. Priority Date: 10/16/2015
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Inventors: Liao, Fuchun
• Primary Examiner(s): Berhanu, Samuel
• Application Number:
  US15/397,291
• Publication Number:
  US 20170117735A1
• Time in Patent Office: 959 Days
• Field of Search: 320106
• 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 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/0071 with a programmable schedule

Abstract

Provided are a charging control method and a mobile terminal. The charging control method includes the follows. The mobile terminal receives a level signal transmitted from the charging device through a D-data line of a charging interface, so as to determine the type of the charging device. The mobile terminal transmits a handshake request signal to the charging device through a D+ data line of the charging interface if it is determined that the charging device is an adapter or a mobile power supply, and the handshake request signal is used to query whether the charging device supports a quick charging mode.

Claims

1. A method for charging control, comprising:

receiving, by a mobile terminal, a level signal transmitted from a charging device to determine a type of the charging device, the level signal being configured for indicating the type of the charging device;

transmitting, from the mobile terminal to the charging device, a handshake request signal according to a timing in which data transmission is delayed for a certain length of time after a rising interrupt is received, when it is determined that the charging device is an adapter or a mobile power supply, wherein the handshake request signal is used to query whether the charging device supports a quick charging mode;

receiving, by the mobile terminal, a handshake response signal transmitted from the charging device and switching to the quick charging mode, wherein the handshake response signal is used to indicate that the charging device supports the quick charging mode; and

switching to a normal charging mode and introducing a charging current of the normal charging mode from the charging device through a power cable of the charging interface to charge a battery of the mobile terminal, when it is determined that the charging device is not the adapter or the mobile power supply, wherein the quick charging mode has a charging speed that is higher than a charging speed of the normal charging mode.

2. The method of claim 1, wherein the handshake request signal is transmitted from the mobile terminal to the charging device through a D+ data line.

3. The method of claim 2, wherein transmitting, by the mobile terminal, a handshake request signal to the charging device comprises:

transmitting, by the mobile terminal, the handshake request signal of a specific waveform to the charging device periodically through the D+ data line.

4. The method of claim 1, wherein the level signal is received by the mobile terminal from the charging device through a D−

data line.

5. The method of claim 1, wherein receiving, by the mobile terminal, the level signal transmitted from the charging device to determine the type of the charging device comprises:

receiving, by the mobile terminal, the level signal through a D−

data line;

determining, by the mobile terminal, the type of the charging interface of the charging device according to the level signal; and

determining, the mobile terminal, the type of the charging device according to the type of the charging interface of the charging device.

6. The method of claim 5, wherein determining, by the mobile terminal, the type of the charging device according to the type of the charging interface of the charging device comprises:

determining whether the charging interface of the charging device is a universal serial bus standard downlink port (USB_SDP) type charging interface;

determining that the charging device is the adapter or the mobile power supply when the charging interface of the charging device is not the USB_SDP type charging interface; and

determining that the charging device is not the adapter or the mobile power supply when the charging interface of the charging device is the USB_SDP type charging interface.

7. The method of claim 1, wherein the charging device and the mobile terminal are connected though the charging interface.

8. The method of claim 1, further comprising:

introducing a charging current of the quick charging mode from the charging device through the power cable of the charging interface to charge the battery of the mobile terminal.

9. A method for charging control, comprising:

transmitting a level signal to a mobile terminal through a D-data line of a charging interface by a charging device, wherein a level signal is used to indicate a type of the charging interface;

receiving a handshake request signal from the mobile terminal through a D+ data line of the charging interface by the charging device, according to a reception timing in which data collection is delayed for a certain length of time after a rising edge interrupt is received, wherein the handshake request signal is used to query whether the charging device supports a quick charging mode;

transmitting a handshake response signal to the mobile terminal by the charging device, wherein the handshake response signal is used to indicate that the charging device supports the quick charging mode; and

switching to the quick charging mode and transmitting a charging current of the quick charging mode to the mobile terminal through a power cable of the charging interface by the charging device to charge a battery of the mobile terminal.

10. The method of claim 9, wherein transmitting a handshake response signal to the mobile terminal by the charging device comprises:

transmitting the handshake response signal of a specific waveform to the mobile terminal through the D+ data line of the charging interface by the charging interface.

19. The method of claim 9, wherein the certain length of time is 2n ms, n being a positive integer.

11. A mobile terminal, comprising:

a first receiving unit, configured to receive a level signal transmitted from a charging device, the level signal being configured for indicating a type of the charging device;

a judging unit, configured to determine the type of the charging device in accordance with the level signal;

a transmitting unit, configured to transmit a handshake request signal to the charging device according to a timing in which data transmission is delayed for a certain length of time after a rising interrupt is received, when the judging unit determines that the charging device is an adapter or a mobile power supply, wherein the handshake request signal is used to query whether the charging device supports a quick charging mode;

a second receiving unit, configured to receive a handshake response signal transmitted from the charging device, wherein the handshake response signal is used to indicate that the charging device supports the quick charging mode; and

a controlling unit, configured to cause the mobile terminal to switch to the quick charging mode and to cause the mobile terminal to enter a normal charging mode when the judging unit determines that the charging device is not the adapter or the mobile power supply.

12. The mobile terminal of claim 11, wherein the mobile terminal further comprises:

a charging unit configured to;

introduce a charging current of the normal charging mode from the charging device through a power cable of a charging interface to charge a battery of the mobile terminal, wherein the quick charging mode has a first charging speed that is higher than a second charging speed of the normal charging mode.

13. The mobile terminal of claim 11, wherein the transmitting unit is configured to transmit the handshake request signal to the charging device through a D+ data line.

14. The mobile terminal of claim 13, wherein the transmitting unit is configured to transmit the handshake request signal of a specific waveform to the charging device periodically through the D+ data line.

15. The mobile terminal of claim 11, wherein the first receiving unit is configured to receive the level signal through a D−

data line.

16. The mobile terminal of claim 11, wherein the judging unit is configured to determine the type of a charging interface of the charging device according to the level signal, and determine the type of the charging device according to the type of the charging interface of the charging device.

17. The mobile terminal of claim 16, wherein the judging unit is configured to:

determine whether the charging interface of the charging device is a USB_SDP type charging interface;

determine that the charging device is the adapter or the mobile power supply when the charging interface of the charging device is not the USB_SDP type charging interface; and

determine that the charging device is not the adapter or the mobile power supply when the charging interface of the charging device is the USB_SDP type charging interface.

18. The mobile terminal of claim 11, further comprising a charging unit, wherein the charging unit is configured to introduce a charging current of the quick charging mode from the charging device through a power cable of a charging interface to charge a battery of the mobile terminal.