Power Adapter and Terminal

Abstract

A power adapter and a terminal are provided. The power adapter includes a power conversion component and a charging interface, the charging interface including a power line; the power conversion component is configured to form a charging loop with a terminal via the power line, for charging a battery of the terminal. The power adapter further includes a communication component, the charging interface further comprises a data line; during a coupling of the power adapter to the terminal, the communication component is configured to perform a bidirectional communication with the terminal via the data line.

What is claimed is: 
     
         1 . A power adapter, comprising a power conversion component and a charging interface, the charging interface comprising a power line; the power conversion component being configured to form a charging loop with a terminal via the power line, for charging a battery of the terminal; and wherein,
 the power adapter further comprises a communication component, the charging interface further comprises a data line; during a coupling of the power adapter to the terminal, in a process of outputting by the power adapter a charging current to the terminal for charging the battery, the communication component is configured to perform a bidirectional communication with the terminal via the data line, so as to negotiate a charging mode, wherein, the charging mode comprises a quick charging mode and a regular charging mode;   wherein, during charging in the regular charging mode, the communication component is configured to perform the bidirectional communication with the terminal so as to negotiate to enter into the quick charging mode by performing following operations of:   sending a quick charging inquiry message to the terminal;   receiving a quick charging indication command sent by the terminal; and   enabling the power adapter to enter into the quick charging mode according to an indication of the quick charging indication command.   
     
     
         2 . The power adapter according to  claim 1 , wherein, during charging in the regular charging mode, the communication component is configured to perform the bidirectional communication with the terminal so as to negotiate to enter into the quick charging mode by performing following operations of:
 receiving information indicating a voltage of the battery;   enabling the power adapter to determine whether the voltage of the battery reaches a quick charging voltage; and   enabling the power adapter to enter into the quick charging mode, if the voltage of the battery reaches the quick charging voltage.   
     
     
         3 . The power adapter according to  claim 1 , wherein, the negotiating a charging mode comprises, by the power adapter, increasing the charging current when the terminal agrees to increase the charging current. 
     
     
         4 . The power adapter according to  claim 1 , wherein, the communication component is configured to perform a communication with the terminal so as to determine a category of the battery; the power adapter is configured to determine the charging mode as the regular charging mode when the category of the battery does not support the quick charging mode and to determine the charging mode as the quick charging mode when the category of the battery supports the quick charging mode. 
     
     
         5 . The power adapter according to  claim 4 , wherein, the category of the battery comprises at least one of: a manufacturer of the battery, a rated power of the battery, and a material of the battery. 
     
     
         6 . The power adapter according to  claim 1 , wherein, the communication component is configured to perform a communication with the terminal so as to determine an operation condition of the battery. 
     
     
         7 . The power adapter according to  claim 6 , wherein, the power adapter is configured to determine a charging mode for the terminal according to the operation condition of the battery. 
     
     
         8 . The power adapter according to  claim 6 , wherein, the operation condition of the battery comprises at least one of: a voltage, an electric quantity, and a temperature of the battery. 
     
     
         9 . The power adapter according to  claim 8 , wherein, the power adapter is further configured to determine a maximum output power of the power adapter corresponding to the at least one of the voltage and the electric quantity, and to limit an output power to the maximum output power. 
     
     
         10 . The power adapter according to  claim 9 , wherein, the power adapter is further configured to limit the output power to the maximum output power by detecting whether the output power exceeds the maximum output power and adopting a voltage or current reducing strategy if the output power exceeds the maximum output power. 
     
     
         11 . The power adapter according to  claim 1 , wherein, the charging interface is a USB interface, the power line is a power line in the USB interface and the data line is a data line in the USB interface. 
     
     
         12 . The power adapter according to  claim 1 , wherein, the charging current outputted by the power adapter for charging the battery in the quick charging mode is set as 4-7 A, and the charging current outputted by the power adapter for charging the battery in the regular charging mode is set as 1-3 A. 
     
     
         13 . A terminal, comprising a battery and a charging interface, the charging interface comprising a power line; the terminal being configured to form a charging loop with a power adapter via the power line, for charging the battery, and wherein,
 the terminal further comprises a communication component, the charging interface further comprises a data line, during a coupling of the terminal to the power adapter, in a process of receiving by the terminal a charging current from the power adapter for charging the battery, the communication component is configured to perform a bidirectional communication with the power adapter via the data line, so as to negotiate a charging mode, wherein, the charging mode comprises a quick charging mode and a regular charging mode;   wherein, during charging in the regular charging mode, the communication component is configured to perform the bidirectional communication with the power adapter so as to negotiate to enter into the quick charging mode by performing following operations of:   receiving a quick charging inquiry message from the power adapter; and   sending a quick charging indication command to the power adapter so as to enable the power adapter to enter into the quick charging mode.   
     
     
         14 . The terminal according to  claim 13 , wherein, during charging in the regular charging mode, the communication component is configured to perform the bidirectional communication with the power adapter so as to negotiate to enter into the quick charging mode by performing following operations of:
 sending information indicating a voltage of the battery;   enabling the power adapter to determine whether the voltage of the battery reaches a quick charging voltage; and   enabling the power adapter to enter into the quick charging mode, if the voltage of the battery reaches the quick charging voltage.   
     
     
         15 . The terminal according to  claim 13 , wherein, the charging interface is a USB interface, the power line is a power line in the USB interface and the data line is a data line in the USB interface. 
     
     
         16 . The terminal according to  claim 13 , wherein, the negotiating a charging mode comprises, by the power adapter, increasing the charging current when the terminal agrees to increase the charging current. 
     
     
         17 . The terminal according to  claim 13 , wherein, the communication component is configured to perform a communication with the power adapter so as to inform the power adapter of a category of the battery, such that the power adapter determines the charging mode as the regular charging mode when the category of the battery does not support the quick charging mode and determines the charging mode as the quick charging mode when the category of the battery supports the quick charging mode. 
     
     
         18 . The terminal according to  claim 17 , wherein, the category of the battery comprises at least one of: a manufacturer of the battery, a rated power of the battery, and a material of the battery. 
     
     
         19 . The terminal according to  claim 13 , wherein, the communication component is configured to perform a communication with the power adapter so as to inform the power adapter of an operation condition of the battery. 
     
     
         20 . The terminal according to  claim 19 , wherein, the operation condition of the battery comprises at least one of: a voltage, an electric quantity, and a temperature of the battery.