BATTERY CHARGING APPARATUS AND METHOD

• US 20160352132A1
• Filed: 05/15/2014
• Published: 12/01/2016
• Est. Priority Date: 01/28/2014
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Inventors: Liu, Fengshuo, Zhang, Jialiang, Wu, Kewei, Peng, Liangcai, Liao, Fuchun, Hu, Yuanxiang
• Granted Patent: US 10,256,652 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2207/30 Charge provided using DC bus or data bus of a computer
• 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 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/0034 using reverse polarity correcting or protecting circuits mechanical means of polarity protection H02J7/0045
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/007182 in response to battery voltage
• CPC Class Codes: H02J 7/06 using discharge tubes or semiconductor devices

Abstract

A battery charging apparatus and method. The battery charging apparatus comprises a power supply adapter (100) and a charging control module (200); during a process of charging a battery (300), the power supply adapter (100) charges a battery (300) in a routine charging mode; when an output current value of the power supply adapter (100) is within a routine current range at a preset time interval, the power supply adapter (100) communicates with the charging control module (200) for quick-charging query; after the charging control module (200) sends a quick-charging instruction command to the power supply adapter (100), the power supply adapter (100) regulates an output voltage according to battery voltage information fed back by the charging control module (200); and when the output voltage meets a quick charging voltage condition preset by the charging control module (200), the power supply adapter (100) regulates an output current and the output voltage in the quick-charging mode to charge the battery (300), and at the same time, the charging control module (200) introduces a direct current from the power supply adapter (100) to charge the battery (300), thereby achieving the objective of quickly charging the battery (300) to shorten the charging time.

Claims

1. A battery charging apparatus, being characterized in that,

the battery charging apparatus comprises a power adapter and a charging control module, the power adapter charges via a communication interface thereof a battery of an electronic equipment, the charging module is built in the electronic equipment, and both the charging control module and the battery are coupled with the communication interface of the power adapter via a communication interface of the electronic equipment, and the charging control module is also coupled with electrodes of the battery so as to detect a voltage of the battery;

during charging the battery, the power adapter first charges the battery in a regular charging mode;

when an output current value of the power adapter falls within a regular current range for a predefined time period, the power adapter performs a quick charge inquiry communication with the charging control module;

after the charging control module sends a quick charge command to the power adapter, the power adapter adjusts an output voltage according to battery voltage information fed back by the charging control module;

if the output voltage meets a quick charge voltage requirement predefined by the charging control module, the power adapter adjusts an output current and the output voltage according to a quick charge mode so as to charge the battery, and the charging control module simultaneously introduces a direct current from the power adapter to charge the battery.

2. The battery charging apparatus of claim 1, being characterized in that,

the power adapter comprises an EMI filter circuit, a high-voltage rectifier and filter circuit, an isolation transformer, an output filter circuit and a voltage tracking and controlling circuit;

after EMI of mains electricity is filtered by the EMI filter circuit, the high-voltage rectifier and filter circuit conducts a rectifying and filtering process to output a high-voltage direct current, after passing through the isolation transformer for an electrical isolation, the high-voltage direct current is outputted to the output filter circuit for being filtered and used to charge the battery, and the voltage tracking and controlling circuit adjusts an output voltage of the isolation transformer according to an output voltage of the output filter circuit;

the power adapter further comprises a power module, a main control module, a potential regulation module, a current detection module, a voltage detection module and an output switch module;

an input terminal of the power module is coupled with a secondary terminal of the isolation transformer;

a power terminal of the main control module, a power terminal of the potential regulation module and a power terminal of the current detection module are jointly coupled with an output terminal of the power module;

both a high-potential terminal of the main control module and a high-potential terminal of the potential regulation module are coupled with a positive output terminal of the output filter circuit;

a potential regulation terminal of the potential regulation module is coupled with the voltage tracking and controlling circuit;

a DC input terminal of the current detection module is coupled with the positive output terminal of the output filter circuit, a current-feedback terminal of the current detection module is coupled with a current detection terminal of the main control module;

a clock output terminal is coupled with a clock input terminal of the potential regulation module and a data output terminal of the main control module is coupled with a data input terminal of the potential regulation module;

a first detection terminal and a second detection terminal of the voltage detection module are coupled with a DC output terminal of the current detection module and a negative output terminal of the output filter circuit, respectively;

a first output terminal and a second output terminal of the voltage detection module are coupled with a first voltage detection terminal and a second voltage detection terminal of the main control module, respectively;

an input terminal of the output switch module is coupled with the DC output terminal of the current detection module;

an output terminal of the output switch module is coupled with a third detection terminal of the voltage detection module;

a ground terminal of the output switch module is coupled with the negative output terminal of the output filter circuit, a controlled terminal and a power terminal of the output switch module are coupled with a switch control terminal of the main control module and the secondary terminal of the isolation transformer, respectively; and

the negative output terminal of the output filter circuit, the output terminal of the output switch module, a first communication terminal and a second communication terminal of the main control module are all coupled with the communication interface of the power adapter;

when the power adapter first charges the battery in the regular charging mode, the main control module controls the output switch module to turn off a DC output of the power adapter;

the voltage detection module detects the output voltage of the power adapter and feeds back a voltage detection signal to the main control module;

according to the voltage detection signal, the main control module judges whether the output voltage of the power adapter is greater than a voltage threshold;

if yes, the main control module continues to judge the output voltage of the power adapter;

if not, the main control module controls the output switch module to turn on the DC output of the power adapter, and drives the voltage tracking and controlling circuit through the potential regulation module to set the output voltage of the isolation transformer as a regular output voltage;

the current detection module detects the output current of the power adapter and feeds back a current detection signal to the main control module;

if the main control module judges according to the current detection signal that the output current of the power adapter is within the regular current range for the predefined time period, the main control module performs the quick charge inquiry communication with the charging control module;

after the charging control module sends the quick charge command to the main control module, the main control module drives, according to the battery voltage information fed back by the charging control module and through the potential regulation module, the voltage tracking and controlling circuit to adjust the output voltage of the isolation transformer;

if the output voltage of the power adapter meets the quick charge voltage requirement predefined by the charging control module, then through the potential regulation module, the main control module drives the voltage tracking and controlling circuit to adjust the output voltage of the isolation transformer so as to enable the power adapter to output the direct current on the basis of a quick charge output current and a quick charge output voltage, and the charging control module simultaneously introduces the direct current from the power adapter for charging the battery.

3. The battery charging apparatus of claim 2, being characterized in that, the power module comprises:

a first capacitor, a voltage stabilizing chip, a second capacitor, a first inductor, a second inductor, a first diode, a second diode, a third capacitor, a first resistor and a second resistor;

a junction between a first terminal of the first capacitor and both an input power pin and an enable pin of the voltage stabilizing chip is configured as the input terminal of the power module;

a second terminal of the first capacitor and a ground pin of the voltage stabilizing chip are jointly grounded;

a switch pin of the voltage stabilizing chip and a first terminal of the second capacitor are jointly coupled with a first terminal of the first inductor;

an internal switch pin of the voltage stabilizing chip and a second terminal of the second capacitor are jointly coupled with a cathode of the first diode;

a feedback voltage pin of the voltage stabilizing chip is coupled with a first terminal of the first resistor and a first terminal of the second resistor, respectively;

a second terminal of the first inductor and a cathode of the second diode are jointly coupled with a first terminal of the second inductor;

a junction, formed by jointly connecting a second terminal of the second inductor, an anode of the first diode, a second terminal of the first resistor and a first terminal of the third capacitor, is configured as the output terminal of the power module;

an anode of the second diode, a second terminal of the second resistor and a second terminal of the third capacitor are jointly grounded.

4. The battery charging apparatus of claim 2, being characterized in that, the main control module comprises:

a main control chip, a third resistor, a reference voltage chip, a fourth resistor, a fifth resistor, a fourth capacitor, a sixth resistor, a seventh resistor, a first NMOS transistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a fourteenth resistor;

a power pin of the main control chip is configured as the power terminal of the main control module;

a ground pin of the main control chip is grounded;

a first I/O pin of the main control chip is suspended;

a first terminal of the third resistor is coupled with the power pin of the main control chip;

a second terminal of the third resistor and a first terminal of the fourth resistor are jointly coupled with a positive electrode of the reference voltage chip;

a negative electrode of the reference voltage chip is grounded;

a vacant pin of the reference voltage chip U3 is suspended;

a second terminal of the fourth resistor is coupled with a second I/O pin of the main control chip;

a third I/O pin of the main control chip is configured as the current detection terminal of the main control module;

a fourth I/O pin of the main control chip is coupled with a first terminal of the fifth resistor;

a second terminal of the fifth resistor and a first terminal of the fourth capacitor are jointly coupled with the power pin of the main control chip;

a second terminal of the fourth capacitor is grounded;

a fifth I/O pin of the main control chip is configured as the switch control terminal of the main control module;

a sixth I/O pin of the main control chip is coupled with a first terminal of the sixth resistor;

a second terminal of the sixth resistor and a grid electrode of the first NMOS transistor are jointly coupled with a first terminal of the seventh resistor;

a second terminal of the seventh resistor and a source electrode of the first NMOS transistor are jointly grounded;

a drain electrode of the first NMOS transistor is coupled with a first terminal of the eighth resistor;

a second terminal of the eighth resistor is configured as the high-potential terminal of the main control module;

a seventh I/O pin and an eighth I/O pin of the main control chip are configured as the clock output terminal and the data output terminal of the main control module, respectively;

a tenth I/O pin and a ninth I/O pin of the main control chip are configured as the first voltage detection terminal and the second voltage detection terminal of the main control module, respectively;

an eleventh I/O pin and a twelfth I/O pin of the main control chip are coupled with a first terminal of the ninth resistor and a first terminal of the tenth resistor, respectively;

a first terminal of the eleventh resistor and a first terminal of the twelfth resistor are coupled with a second terminal of the ninth resistor and a second terminal of the tenth resistor, respectively;

a second terminal of the eleventh resistor and a second terminal of the twelfth resistor are jointly grounded;

a first terminal of the thirteenth resistor and a first terminal of the fourteenth resistor are coupled with the second terminal of the ninth resistor and the second terminal of the tenth resistor, respectively;

a second terminal of the thirteenth resistor and a second terminal of the fourteenth resistor are jointly coupled with the power pin of the main control chip;

the second terminal of the ninth resistor and the second terminal of the tenth resistor are configured as the first communication terminal and the second communication terminal of the main control module, respectively.

5. The battery charging apparatus of claim 2, being characterized in that, the potential regulation module comprises:

a fifteenth resistor, a sixteenth resistor, a digital potentiometer, a seventeenth resistor, an eighteenth resistor, a fifth capacitor, a sixth capacitor and a nineteenth resistor;

a junction of a first terminal of the fifteenth resistor, a first terminal of the sixteenth resistor, a power pin of the digital potentiometer and a first terminal of the fifth capacitor is configured as the power terminal of the potential regulation module;

a second terminal of the fifth capacitor, a first terminal of the sixth capacitor, a ground pin of the digital potentiometer and a first terminal of the seventeenth resistor are jointly grounded;

a second terminal of the sixth capacitor is coupled with the power pin of the digital potentiometer;

a junction between a second terminal of the fifteenth resistor and a serial data pin of the digital potentiometer is configured as the data input terminal of the potential regulation module;

a junction between a second terminal of the sixteenth resistor and a clock input pin of the digital potentiometer is configured as the clock input terminal of the potential regulation module;

an address zero pin of the digital potentiometer is grounded;

a first potential wiring pin of the digital potentiometer and a first terminal of the eighteenth resistor are jointly coupled with a second terminal of the seventeenth resistor;

a second terminal of the eighteenth resistor and a second potential wiring pin of the digital potentiometer are jointly coupled with a first terminal of the nineteenth resistor;

a second terminal of the nineteenth resistor is configured as the high-potential terminal of the potential regulation module;

a potential tap pin of the digital potentiometer is configured as the potential regulation terminal of the potential regulation module.

6. The battery charging apparatus of claim 2, being characterized in that, the current detection module comprises:

a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a seventh capacitor, an eighth capacitor, a current detection chip, a twenty-third resistor, a tenth capacitor, a tenth capacitor and a twenty-fourth resistor;

a first terminal and a second terminal of the twentieth resistor are configured as the DC input terminal and the DC output terminal of the current detection module, respectively;

a first terminal of the twenty-first resistor and a first terminal of the twenty-second resistor are coupled with the first terminal and the second terminal of the twentieth resistor, respectively;

a second terminal of the twenty-first resistor and a first terminal of the seventh capacitor are jointly coupled with a positive input pin of the current detection chip, a second terminal of the twenty-second resistor and a first terminal of the eighth capacitor are jointly coupled with a negative input pin of the current detection chip;

a junction between a power pin of the current detection chip and a first terminal of the ninth capacitor is configured as the power terminal of the current detection module;

a vacant pin of the current detection chip is suspended;

an output pin of the current detection chip is coupled with a first terminal of the twenty-third resistor;

a second terminal of the twenty-third resistor is configured as the current-feedback terminal of the current detection module;

a first terminal of the tenth capacitor and a first terminal of the twenty-fourth resistor are jointly coupled with the second terminal of the twenty-third resistor;

a second terminal of the seventh capacitor and a second terminal of the eighth capacitor, a second terminal of the ninth capacitor, a second terminal of the tenth capacitor, a second terminal of the twenty-fourth resistor, and a ground pin, a first reference voltage pin and a second reference voltage pin of the current detection chip are jointly grounded.

7. The battery charging apparatus of claim 2, being characterized in that, the voltage detection module comprises:

a twenty-fifth resistor, a twenty-sixth resistor, an eleventh capacitor, a twelfth capacitor, a twenty-seventh resistor and a twenty-eighth resistor;

a first terminal of the twenty-fifth resistor is configured as the first detection terminal of the voltage detection module;

a junction between a second terminal of the twenty-fifth resistor and both a first terminal of the twenty-sixth resistor and a first terminal of the eleventh capacitor is configured as the second output terminal of the voltage detection module;

a second terminal of the twenty-sixth resistor is configured as the second detection terminal of the voltage detection module;

a second terminal of the eleventh capacitor and both a first terminal of the twelfth capacitor and a first terminal of the twenty-seventh resistor are jointly coupled with the second terminal of the twenty-sixth resistor;

a junction between a second terminal of the twelfth capacitor and both a second terminal of the twenty-seventh resistor and a first terminal of the twenty-eighth resistor is configured as the first output terminal of the voltage detection module;

a second terminal of the twenty-eighth resistor is configured as the third detection terminal of the voltage detection module.

8. The battery charging apparatus of claim 2, being characterized in that, the output switch module comprises:

a twenty-ninth resistor, a thirtieth resistor, a thirteenth capacitor, a thirty-first resistor, a first NPN-type triode, a thirty-second resistor, a second NPN-type triode, a third diode, a voltage stabilizing diode, a thirty-third resistor, a thirty-fourth resistor, a thirty-fifth resistor, a second NMOS transistor and a third NMOS transistor;

a first terminal of the twenty-ninth resistor is configured as the controlled terminal of the output switch module;

a second terminal of the twenty-ninth resistor and a first terminal of the thirtieth resistor are jointly coupled with a base electrode of the first NPN-type triode;

a first terminal of the thirteenth capacitor, a first terminal of the thirty-first resistor and a first terminal of the thirty-second resistor are jointly coupled with a cathode of the third diode;

an anode of the third diode is configured as the power terminal of the output switch module;

a second terminal of the thirty-first resistor and a base electrode of the second NPN-type triode are jointly coupled with a collector electrode of the first NPN-type triode;

a second terminal of the thirty-second resistor, a cathode of the voltage stabilizing diode and a first terminal of the thirty-third resistor are jointly coupled with a collector electrode of the second NPN-type triode;

a second terminal of the thirtieth resistor, a second terminal of the thirteenth capacitor, an emitter electrode of the first NPN-type triode, an emitter electrode of the second NPN-type triode and an anode of the voltage stabilizing diode are jointly grounded;

a second terminal of the thirty-third resistor, a first terminal of the thirty-fourth resistor, a first terminal of the thirty-fifth resistor, a grid electrode of the second NMOS transistor and a grid electrode of the third NMOS transistor are jointly coupled;

a second terminal of the thirty-fourth resistor is configured as the ground terminal of the output switch module;

a drain electrode of the second NMOS transistor is configured as the input terminal of the output switch module;

a source electrode of the second NMOS transistor and a second terminal of the thirty-fifth resistor are jointly coupled with a source electrode the third NMOS transistor;

a drain electrode of the third NMOS transistor is configured as the output terminal of the output switch module.

9. The battery charging apparatus of claim 1 or 2, being characterized in that, the charging control module comprises:

a battery connector, a main controller, a thirteenth capacitor, a thirty-sixth resistor, a thirty-seventh resistor, a fourteenth capacitor, a first Schottky diode, a second Schottky diode, a fifteenth capacitor, a thirty-eighth resistor, a thirty-ninth resistor, a fortieth resistor, a third NPN-type triode, a fourth NMOS transistor and a fifth NMOS transistor;

the battery connector is coupled with the electrodes of the battery;

a first pin and a second pin of the battery connector are jointly grounded;

a first ground pin and a second ground pin of the battery connector are jointly grounded;

a first I/O pin of the main controller is coupled with a seventh pin and an eighth pin of the battery connector respectively;

a second I/O pin, a seventh I/O pin, an eighth I/O pin and a ninth I/O pin of the main controller are coupled with a sixth pin, a fifth pin, a fourth pin, a third pin of the battery connector, respectively;

both an analog ground pin and a ground pin of the main controller are grounded;

both a first vacant pin and a second vacant pin of the main controller are suspended;

both a power pin of the main controller and a first terminal of the thirteenth capacitor are jointly coupled with the seventh pin and the eighth pin of the battery connector;

a fourth I/O pin and an eleventh I/O pin of the main controller carry out data communications with the electronic equipment;

the thirty-sixth resistor is coupled between the fourth I/O pin and the power pin of the main controller;

a sixth I/O pin and a twelfth I/O pin of the main controller are coupled with the first communication terminal and the second communication terminal of the main control module in the power adapter, respectively;

a first terminal of the thirty-seventh resistor and a first terminal of the thirty-eighth resistor are jointly coupled with a tenth I/O terminal of the main controller;

a second terminal of the thirty-seventh resistor is coupled with the power pin of the main controller;

a second terminal of the thirty-eighth resistor is coupled with a base electrode of the third NPN-type triode;

a fifth I/O terminal of the main controller is coupled with a first terminal of the fourteenth capacitor;

a second terminal of the fourteenth capacitor and a cathode of the first Schottky diode are jointly coupled with an anode of the second Schottky diode;

a first terminal of the thirty-ninth resistor and a first terminal of the fifteenth capacitor are jointly coupled with a cathode of the second Schottky diode;

each of a second terminal of the thirty-ninth resistor, a first terminal of the fortieth resistor and a collector electrode of the third NPN-type triode is coupled with a grid electrode of the fourth NMOS transistor and a grid electrode of the fifth NMOS transistor;

a second terminal of the fortieth resistor and a second terminal of the fifteenth capacitor are jointly grounded;

a source electrode of the fourth NMOS transistor is coupled with an anode of the first Schottky diode, and further coupled with the seventh pin and the eighth pin of the battery connector;

a drain electrode of the fourth NMOS transistor is coupled with a drain electrode of the fifth NMOS transistor;

a source electrode of the fifth NMOS transistor is coupled with a power wire of the communication interface of the power adapter;

an emitter electrode of the third NPN-type triode is coupled with an anode of the third Schottky diode;

a cathode of the third Schottky diode is grounded.

10. The battery charging apparatus of claim 9, being characterized in that, the charging control module further comprises a sixth NMOS transistor, a seventh NMOS transistor and a forty-first resistor;

a source electrode of the sixth NMOS transistor is coupled with the source electrode of the fifth NMOS transistor;

a drain electrode of the sixth NMOS transistor is coupled with a drain electrode of the seventh NMOS electrode;

a source electrode of the seventh NMOS transistor is coupled with the collector electrode of the third NPN-type triode;

a grid electrode of the sixth NMOS transistor and a grid electrode of the seventh NMOS transistor are jointly coupled with a first terminal of the forty-first resistor;

a second terminal of the forty-first resistor is grounded.

11. A battery charging method based on the battery charging apparatus of claim 1, being characterized in that, the battery charging method comprises:

A. during charging a battery, first charging, by a power adapter, the battery in a regular charging mode;

B. when an output current value of the power adapter is within a regular current range for a predefined time period, performing, by the power adapter, a quick charge inquiry communication with a charging control module;

C. after the charging control module sends a quick charge command to the power adapter, adjusting, by the power adapter, an output voltage according to battery voltage information fed back by the charging control module;

D. when the output voltage meets a quick charge voltage requirement predefined by the charging control module, adjusting, by the power adapter, an output current and the output voltage according to a quick charge mode so as to charge the battery, and simultaneously introducing, by the charging control module, a direct current from the power adapter to charge the battery.

12. The battery charging method of claim 11, being characterized in that, after the act A, the battery charging method further comprises acts as follows:

A1. detecting and judging, by the power adapter, the output current thereof;

A2. if the output current value of the power adapter is less than a lower limit of current, returning to carry out the act A1;

A3. if the output current value of the power adapter is more than an upper limit of current, turning off, by the power adapter, a DC output.

13. The battery charging method of claim 11, being characterized in that, between the act C and the act D, the battery charging method further comprises acts as follows:

C1. performing, by the power adapter, a quick charge voltage inquiry communication with the charging control module, and feeding back, by the power adapter, output voltage information to the charging control module;

C2. judging, by the charging control module according to the output voltage information, whether the output voltage of the power adapter meets the quick charge voltage requirement predefined.

14. The battery charging method of claim 13, being characterized in that, between the act C2 and the act D, the battery charging method further comprises acts as follows:

C3. if the output voltage of the power adapter does not meet the quick charge voltage requirement, sending, by the charging control module, a voltage deviation feedback signal to the power adapter;

C4. adjusting, by the power adapter, the output voltage thereof according to the voltage deviation feedback signal, and returning to carry out the act C2.

15. The battery charging method of claim 11, being characterized in that, after the act D, the battery charging method further comprises acts as follows:

D1. detecting, by the charging control module, a voltage of the battery and judging, by the charging control module, whether the voltage of the battery is greater than a quick charge threshold voltage;

if yes, carrying out act D2, and if not, returning to carry out the act D;

D2. stopping, by the charging control module, introducing the direct current from the power adapter to charge the battery, and feeding back, by the charging control module, a quick charge shutdown command to the power adapter;

D3. exiting from the quick charge mode by the power adapter according to the quick charge shutdown command, and returning to carry out the act A.

16. The battery charging method of claim 11, being characterized in that, the battery charging method further comprises following acts executed simultaneously with act D:

D11. sending, by the power adapter, a first electrical parameter access request to the charging control module, and sending, by the charging control module, a second electrical parameter access request to the power adapter;

D12. feeding back, by the charging control module, input voltage information and input current information of the electronic equipment to the power adapter according to the first electrical parameter access request;

D13. feeding back, by the power adapter, output voltage information and output current information of the power adapter to the charging control module according to the second electrical parameter access request;

D14. judging, by the power adapter according to the input voltage information, whether a difference between an input voltage of the electronic equipment and the output voltage of the power adapter is greater than an abnormal voltage difference threshold, and judging, by the power adapter according to the input current information, whether a difference between input current of the electronic equipment and the output current of the power adapter is greater than an abnormal current difference;

if the difference between the input voltage of the electronic equipment and the output voltage of the power adapter is greater than the abnormal voltage difference threshold, and/or if the difference between the input current of the electronic equipment and the output current of the power adapter is greater than the abnormal current difference, carrying out act D15;

if the difference between the input voltage of the electronic equipment and the output voltage of the power adapter is not greater than the abnormal voltage difference threshold and the difference between the input current of the electronic equipment and the output current of the power adapter is not greater than the abnormal current difference, carrying out act D17;

D15. sending, by the power adapter, a first charging shutdown instruction to the charging control module, and automatically turning off, by the power adapter, the DC output;

D16. instructing, by the charging control module according to the first charging shutdown instruction, the electronic equipment to turn off a communication interface thereof;

D17. judging, by the charging control module according to the output voltage information, whether the difference between the input voltage of the electronic equipment and the output voltage of the power adapter is greater than the abnormal voltage difference threshold, and judging, by the charging control module according to the output current information, whether the difference between the input current of the electronic equipment and the output current of the power adapter is greater than the abnormal current difference;

if the difference between the input voltage of the electronic equipment and the output voltage of the power adapter is greater than the abnormal voltage difference threshold, and/or if the difference between the input current of the electronic equipment and the output current of the power adapter is greater than the abnormal current difference, carrying out act D18;

if the difference between the input voltage of the electronic equipment and the output voltage of the power adapter is not greater than the abnormal voltage difference threshold and the difference between the input current of the electronic equipment and the output current of the power adapter is not greater than the abnormal current difference, returning to carry out the act D11;

D18. sending, by the charging control module, a second charging shutdown instruction to the power adapter, and instructing, by the charging control module, the electronic equipment to turn off the communication interface thereof;

D19. turning off, by the power adapter, the DC output according to the second charging shutdown instruction.

17. The battery charging method of any of claims 11-16, being characterized in that, charging by the power adapter the battery in the regular charging mode in the act A comprises following specific acts:

a1. under a circumstance that the DC output is turned off, detecting and judging, by the power adapter, whether a voltage of the communication interface is greater than a voltage threshold;

if yes, continuing to carry out the act a1, and if not, carrying out act a2;

a2. outputting, by the power adapter, the direct current according to a predefined regular output voltage.

18. The battery charging method of any of claims 11-16, being characterized in that, performing by the power adapter the quick charge inquiry communication with the charging control module in the act B comprises following specific acts:

b1. sending, by the power adapter, a quick charge inquiry instruction to the charging control module;

b2. judging, by the charging control module according to the quick charge inquiry instruction, whether the voltage of the battery reaches a quick charge voltage value;

if yes, carrying out act b3, and if not, carrying out act b4;

b3. feeding back, by the charging control module, the quick charge command to the power adapter;

b4. feeding back, by the charging control module, a quick charge rejection command to the power adapter.

19. The battery charging method of any of claims 11-16, being characterized in that, adjusting by the power adapter the output voltage according to the battery voltage information fed back by the charging control module in the act C comprises following specific acts:

c1. sending, by the power adapter, a battery voltage access request to the charging control module according to the quick charge command sent from the charging control module;

c2. feeding back, by the charging control module, the battery voltage information to the power adapter according to the battery voltage access request;

c3. adjusting, by the power adapter, the output voltage thereof to a setting value of a quick charge voltage according to the battery voltage information.

20. The battery charging method of any of claims 11-16, being characterized in that, adjusting by the power adapter the output current and the output voltage according to the quick charge mode so as to charge the battery in the act D comprises following specific acts:

d1. feeding back, by the charging control module, an entry instruction of the quick charge mode to the power adapter;

d2. adjusting, by the power adapter, the output current and the output voltage thereof according to the entry instruction of the quick charge mode to a quick charge output current and a quick charge output voltage, respectively;

d3. sending, by the power adapter, a battery voltage access request to the charging control module;

d4. feeding back, by the charging control module, the battery voltage information to the power adapter according to the battery voltage access request;

d5. judging, by the power adapter according to the battery voltage information, whether a difference between the output voltage of the power adapter and the voltage of the battery is greater than a voltage difference threshold;

if yes, carrying out act d6, and if not, carrying out act d7;

d6. turning off, by the power adapter, the DC output;

d7. adjusting, by the power adapter according to the battery voltage information, the output current thereof, and returning to carry out the act d3.