Charging method and system

Patent metadata

Field	Value
Publication number	US-10447058-B2
Application number	US-201816204769-A
Country	US
Kind code	B2
Filing date	Nov 29, 2018
Priority date	Jan 28, 2014
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

The present disclosure provides a charging method and a charging system. The charging system includes a charging device and a mobile terminal, the charging device includes a second controller and an adjusting circuit, and the mobile terminal includes a cell detection circuit and a cell. The cell detection circuit acquires a voltage value of the cell, and sends the voltage value of the cell to the second controller, the second controller searches a threshold range table for a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and sends the current adjusting instruction to the adjusting circuit, and the adjusting circuit performs a current adjustment according to the current adjusting instruction and outputs a power signal after the current adjustment, in which the threshold range table records threshold ranges and current adjusting instructions having a one-to-one mapping relation with threshold ranges.

First claim

What is claimed is:

1. A charging method, applied in a charging device, wherein the charging method comprises:
acquiring a voltage value of a cell of a mobile terminal, searching a threshold range table to obtain a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and sending the current adjusting instruction to an adjusting circuit of the charging device, the threshold range table recording one or more threshold ranges and one or more current adjusting instructions having a one-to-one mapping relation with the one or more threshold ranges;
controlling the adjusting circuit to perform a current adjustment according to the current adjusting instruction and to output a power signal after the current adjustment;
sending the power signal to a first charging interface of the mobile terminal by the charging device through a second charging interface, such that the charging device charges the cell of the mobile terminal; wherein at least two first power lines in the first charging interface are coupled respectively to at least two second power lines in the second charging interface and at least two first ground lines in the first charging interface are coupled respectively to at least two second ground lines in the second charging interface to form at least two charging loops.

2. The charging method according to claim 1 , wherein,
controlling the adjusting circuit to perform the current adjustment according to the current adjusting instruction and to output the power signal after the current adjustment comprises:
controlling a current detection circuit to detect a current value of the power signal outputted by the adjusting circuit;
calculating a difference between the current value detected and a current value specified by the current adjusting instruction, and sending a calibration instruction to the adjusting circuit if an absolute value of the difference calculated is greater than a difference threshold; and
controlling the adjusting circuit to calibrate the power signal according to a current difference specified by the calibration instruction and to output a calibrated power signal, wherein a current value of the calibrated power signal is equal to the current value specified by the current adjusting instruction.

3. The charging method according to claim 2 , wherein, the current value specified by the current adjusting instruction is equal to a sum of a preset current value flowing into the cell and a current value consumed by impedances introduced into the charging system.

4. The charging method according to claim 1 , wherein, the one or more threshold ranges are numerically continuous.

5. The charging method according to claim 1 , further comprising:
controlling the adjusting circuit to generate a voltage adjustment instruction according to the calibration instruction; and
controlling a voltage and current adjusting circuit to perform a voltage adjustment according to the voltage adjustment instruction and outputting a power signal after the voltage adjustment.

6. A charging device, comprising: a second controller and an adjusting circuit, wherein,
the second controller is configured to acquire a voltage value of a cell of a mobile terminal, search a threshold range table to obtain a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and send the current adjusting instruction to the adjusting circuit, the threshold range table recording one or more threshold ranges and one or more current adjusting instructions having a one-to-one mapping relation with the one or more threshold ranges;
the adjusting circuit is configured to perform a current adjustment according to the current adjusting instruction, and outputting a power signal after the current adjustment;
wherein the charging device is configured to send the power signal to a first charging interface of the mobile terminal by the charging device through a second charging interface, such that the charging device charges the cell of the mobile terminal; wherein at least two first power lines in the first charging interface are coupled respectively to at least two second power lines in the second charging interface and at least two first ground lines in the first charging interface are coupled respectively to at least two second ground lines in the second charging interface to form at least two charging loops.

7. The charging device according to claim 6 , wherein the adjusting circuit comprises a current detection circuit;
the current detection circuit is configured to detect a current value of a power signal outputted by the adjusting circuit, and send the current value detected to the second controller;
the second controller is further configured to calculate a difference between the current value detected and a current value specified by the current adjusting instruction, and send a calibration instruction to the adjusting circuit when an absolute value of the difference calculated is greater than a difference threshold; and
the adjusting circuit is configured to calibrate the power signal according to a current difference specified by the calibration instruction, and output a calibrated power signal, wherein a current value of the calibrated power signal is equal to the current value specified by the current adjusting instruction.

8. The charging device according to claim 7 , wherein, the current value specified by the current adjusting instruction is equal to a sum of a preset current value flowing into the cell and a current value consumed by impedances introduced into the charging system.

9. The charging device according to claim 6 , wherein, the one or more threshold ranges are numerically continuous.

10. The charging device according to claim 6 , wherein, the adjusting circuit further comprises a voltage and current adjusting circuit;
the adjusting circuit is configured to generate a voltage adjustment instruction according to the calibration instruction; and
the voltage and current adjusting circuit is configured to perform a voltage adjustment according to the voltage adjustment instruction and output a power signal after the voltage adjustment.

11. A charging system, comprising a charging device and a mobile terminal, wherein the charging device comprises a second controller and an adjusting circuit, the mobile terminal comprises a cell detection circuit and a cell;
the cell detection circuit is configured to acquire a voltage value of the cell, and to send the voltage value of the cell to the second controller;
the second controller is configured to search a threshold range table for a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and to send the current adjusting instruction to the adjusting circuit, wherein the threshold range table records one or more threshold ranges and current adjusting instructions having a mapping relation with the one or more threshold ranges; and
the adjusting circuit is configured to perform a current adjustment according to the current adjusting instruction, and to output a power signal after the current adjustment;
the charging device further comprises a second charging interface, and the mobile terminal further comprises a first charging interface;
the charging device is further configured to send the power signal to the first charging interface through the second charging interface, such that the charging device charges the cell of the mobile terminal, wherein at least two first power lines in the first charging interface are coupled respectively to at least two second power lines in the second charging interface and at least tw

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Zhang Jialiang
• Wu Kewei
• Peng Liangcai
• Cheng Wenqiang
• Liao Fuchun

Classifications

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title

• H02J7/92

  with prioritisation of loads or sources · CPC title

• H02J7/933 Primary

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

• H02M7/04

  by static converters · CPC title

• H02J7/0073

  Electricity · mapped topic