Quick charging method, mobile terminal, and power adapter
First Claim
1. A quick charging method applied in a power adapter, the power adapter being coupled to a mobile terminal via a USB interface, a power line of the USB interface being used for the power adapter to charge a battery of the mobile terminal, data lines of the USB interface being used for communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a quick charging mode, a charging speed of the quick charging mode being greater than that of the normal charging mode, the method comprising:
- detecting, by the power adapter, a charging current provided to the mobile terminal by the power adapter;
determining, by the power adapter, that the mobile terminal has recognized a type of the power adapter when the power adapter determines that within a preset time period the charging current provided to the mobile terminal by the power adapter is greater than or equals to a preset current threshold;
activating, by the power adapter, a quick charging communication process when the power adapter receives indication information for indicating that the mobile terminal has recognized the type of the power adapter from the mobile terminal, and transmitting, by the power adapter, a first instruction to the mobile terminal, the first instruction being configured to query whether the mobile terminal agrees to charge the battery in the quick charging mode;
receiving, by the power adapter, a reply instruction of the first instruction from the mobile terminal, the reply instruction of the first instruction being configured to indicate that the mobile terminal agrees to charge the battery in the quick charging mode;
conducting, by the power adapter, a handshake communication with the mobile terminal via a second instruction to determine a charging voltage of the quick charging mode;
conducting, by the power adapter, a handshake communication with the mobile terminal via a third instruction to determine a charging current of the quick charging mode;
adjusting, by the power adapter, an output voltage and an output current of the power adapter to be the charging voltage and the charging current of the quick charging mode to enter a plurality of constant current phases with different current magnitudes; and
conducting, by the power adapter, a handshake communication with the mobile terminal via a fourth instruction to enable the constant current outputs of the power adapter to be changed to a different constant current phase.
1 Assignment
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Accused Products
Abstract
Methods and devices are provided for quick charging. In the method, after a mobile terminal recognizes a type of a power adapter, the mobile terminal transmits indication information to the power adapter. The indication information is configured to indicate that the mobile terminal has recognized the type of the power adapter and instruct the power adapter to activate a quick charging process. The power adapter then negotiates with the mobile terminal via the quick charging process to determine charging parameters, and charges a battery of the mobile terminal in a multi-stage constant current mode.
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Citations
24 Claims
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1. A quick charging method applied in a power adapter, the power adapter being coupled to a mobile terminal via a USB interface, a power line of the USB interface being used for the power adapter to charge a battery of the mobile terminal, data lines of the USB interface being used for communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a quick charging mode, a charging speed of the quick charging mode being greater than that of the normal charging mode, the method comprising:
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detecting, by the power adapter, a charging current provided to the mobile terminal by the power adapter; determining, by the power adapter, that the mobile terminal has recognized a type of the power adapter when the power adapter determines that within a preset time period the charging current provided to the mobile terminal by the power adapter is greater than or equals to a preset current threshold; activating, by the power adapter, a quick charging communication process when the power adapter receives indication information for indicating that the mobile terminal has recognized the type of the power adapter from the mobile terminal, and transmitting, by the power adapter, a first instruction to the mobile terminal, the first instruction being configured to query whether the mobile terminal agrees to charge the battery in the quick charging mode; receiving, by the power adapter, a reply instruction of the first instruction from the mobile terminal, the reply instruction of the first instruction being configured to indicate that the mobile terminal agrees to charge the battery in the quick charging mode; conducting, by the power adapter, a handshake communication with the mobile terminal via a second instruction to determine a charging voltage of the quick charging mode; conducting, by the power adapter, a handshake communication with the mobile terminal via a third instruction to determine a charging current of the quick charging mode; adjusting, by the power adapter, an output voltage and an output current of the power adapter to be the charging voltage and the charging current of the quick charging mode to enter a plurality of constant current phases with different current magnitudes; and conducting, by the power adapter, a handshake communication with the mobile terminal via a fourth instruction to enable the constant current outputs of the power adapter to be changed to a different constant current phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mobile terminal, the mobile terminal being coupled to a power adapter via a USB interface, a power line of the USB interface being used for charging a battery of the mobile terminal, data lines of the USB interface being used for communication between the mobile terminal and the power adapter, the mobile terminal supporting a normal charging mode and a quick charging mode, a charging speed of the quick charging mode being greater than that of the normal charging mode, the mobile terminal comprising:
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a charging circuit; and a communication control circuit configured to determine a type of the power adapter when the power adapter becomes coupled to the mobile terminal, transmit indication information to the power adapter when the power adapter determines that within a preset time period a charging current provided to the mobile terminal by the power adapter is greater than or equals to a preset current threshold, wherein the indication information is configured to indicate that the mobile terminal has recognized the type of the power adapter and instruct the power adapter to activate a quick charging communication process, the communication control circuit is further configured to receive a first instruction from the power adapter after the power adapter activates the quick charging communication process, and the first instruction is configured to query whether the mobile terminal agrees to charge a battery of the mobile terminal in the quick charging mode;
the communication control circuit is further configured to transmit a reply instruction of the first instruction to the power adapter, and the reply instruction of the first instruction is configured to indicate that the mobile terminal agrees to charge the battery in the quick charging mode;
the communication control circuit is further configured to conduct a handshake communication with the power adapter via a second instruction transmitted by the power adapter to determine a charging voltage of the quick charging mode, conduct a handshake communication with the power adapter via a third instruction transmitted by the power adapter to determine a charging current of the quick charging mode, and conduct a handshake communication with the power adapter via a fourth instruction transmitted by the power adapter after the power adapter adjusts an output voltage and an output current of the power adapter to be the charging voltage and the charging current of the quick charging mode and enters a plurality of constant current phases with different current magnitudes, so as to enable constant current outputs of the power adapter to be changed to a different constant current phase, to charge the battery via the charging circuit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A power adapter, the power adapter being coupled to a mobile terminal via a USB interface, a power line of the USB interface being used for the power adapter to charge a battery of the mobile terminal, data lines of the USB interface being used for communication between the power adapter and the mobile terminal, the power adapter supporting a normal charging mode and a quick charging mode, a charging speed of the quick charging mode being greater than that of the normal charging mode, the power adapter comprising:
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a charging circuit; and a communication control circuit configured to detect a charging current provided to the mobile terminal by the power adapter, determine that the mobile terminal has recognized a type of the power adapter when the power adapter determines that within a preset time period the charging current provided to the mobile terminal by the power adapter is greater than or equals to a preset current threshold, activate a quick charging communication process when the power adapter receives indication information for indicating that the mobile terminal has recognized the type of the power adapter from the mobile terminal, and transmit a first instruction to the mobile terminal, wherein the first instruction is configured to query whether the mobile terminal agrees to charge the battery in the quick charging mode;
the communication control circuit is further configured to receive a reply instruction of the first instruction from the mobile terminal, and the reply instruction of the first instruction is configured to indicate that the mobile terminal agrees to charge the battery in the quick charging mode;
the communication control circuit is configured to conduct a handshake communication with the mobile terminal via a second instruction to determine a charging voltage of the quick charging mode, conduct a handshake communication with the mobile terminal via a third instruction to determine a charging current of the quick charging mode, adjust an output voltage and an output current of the power adapter to be the charging voltage and the charging current of the quick charging mode to enter a plurality of constant current phases with different current magnitudes, and conduct a handshake communication with the mobile terminal via a fourth instruction during the constant current phase to enable the constant current outputs of the power adapter to be changed to a different constant current phase, so as to charge the mobile terminal via the charging circuit. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification