WO2019113738A1 - 充电控制方法、电子装置、电源适配器及充电控制系统 - Google Patents

充电控制方法、电子装置、电源适配器及充电控制系统 Download PDF

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Publication number
WO2019113738A1
WO2019113738A1 PCT/CN2017/115465 CN2017115465W WO2019113738A1 WO 2019113738 A1 WO2019113738 A1 WO 2019113738A1 CN 2017115465 W CN2017115465 W CN 2017115465W WO 2019113738 A1 WO2019113738 A1 WO 2019113738A1
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Prior art keywords
charging
electronic device
power adapter
resistor
configuration parameter
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PCT/CN2017/115465
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English (en)
French (fr)
Inventor
郭启明
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深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to PCT/CN2017/115465 priority Critical patent/WO2019113738A1/zh
Priority to CN201780095816.9A priority patent/CN111201690A/zh
Publication of WO2019113738A1 publication Critical patent/WO2019113738A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to a charging control method, an electronic device, a power adapter, and a charging control system.
  • smart devices are increasingly favored by consumers, but smart devices consume a lot of power and usually require frequent charging. As the battery capacity of smart devices gets higher and higher, the charging time becomes longer. In order to save the charging time of smart devices, fast charging technology came into being.
  • the existing high-current fast charging scheme usually adopts a direct charging and charging management chip, and uses two charging channels, including a normal charging channel and a fast charging channel.
  • the current switching of the charging channel is controlled by the device side or the power adapter end unilaterally, that is, the charging channel is switched without the mutual confirmation of the charging parameter between the device end and the power adapter, which may result in the slave power adapter.
  • the introduction of excessive current or voltage at the end causes the device-end device to be burned, posing a safety hazard.
  • the embodiment of the invention discloses a charging control method, an electronic device, a power adapter and a charging control system, which can control the output voltage and current of the power adapter according to the charging mode, thereby improving the safety of the product.
  • a first aspect of the embodiments of the present invention discloses a charging control method, which is applied to an electronic device, where the electronic device is connected to a power adapter through a charging cable, and the electronic device includes a processor, a rechargeable battery, and a charging mode switching switch.
  • the first end of the charging mode switch is connected to a power pin of the power input interface of the electronic device, and the second end of the charging mode switch is connected to the rechargeable battery, and the control end of the charging mode switch Connected to the processor; when the charging mode switch is closed, the electronic device is in a fast charge and charge mode, corresponding to a first charging configuration parameter; when the charging mode switch is turned off, the electronic device In a normal charging mode, corresponding to the second charging configuration parameter; the first charging configuration parameter includes a first charging current, the second charging configuration parameter includes a second charging current, the first charging current is greater than the second charging current,
  • the methods include:
  • the second aspect of the embodiment of the present invention discloses an electronic device connected to a power adapter through a charging cable, including a processor, a rechargeable battery, and a charging mode switching switch, and the first end of the charging mode switching switch and the electronic device a power pin of the power input interface, the second end of the charging mode switch is connected to the rechargeable battery,
  • the control end of the charging mode switch is connected to the processor; when the charging mode switch is closed, the electronic device is in a fast charging mode, corresponding to a first charging configuration parameter; when the charging mode is switched When the switch is off, the electronic device is in a normal charging mode, corresponding to the second charging configuration parameter; the first charging configuration parameter includes a first charging current greater than a second charging included in the second charging configuration parameter Current; the electronic device further comprising a memory storing a computer program executable by the processor, the computer program being executed by the processor to implement the charging control method as described in the first aspect above.
  • a third aspect of the embodiments of the present invention discloses another charging control method, which is applied to a power adapter that supplies power to an electronic device through a charging cable, the electronic device including a charging mode switching switch, when the charging mode is switched When the switch is closed, the electronic device enters a fast charge charging mode, and when the charging mode switch is closed, the electronic device enters a normal charging mode;
  • the power adapter includes a power output interface, and a controller, the power output The interface includes a power output pin, a first data pin, a second data pin, and a ground pin, wherein the first data pin is disconnected from the second data pin and is respectively connected to the controller;
  • the method includes:
  • the first charging configuration parameter comprising a first charging current
  • a fourth aspect of the embodiments of the present invention provides a power adapter for supplying power to an electronic device through a charging cable, including a power output interface, a voltage dividing module, and a controller, where the voltage dividing module includes a first resistor and a second resistor.
  • the power output interface includes a power output pin, a first data pin, a second data pin, and a ground pin, the first data pin and the second data pin Disconnecting and respectively connected to the controller, a first end of the first resistor is connected to the power output pin, and a second end of the first resistor is connected to the a first end of the first switch is connected to the ground pin, and a second end of the second switch is connected to the second end of the first resistor by the second resistor a control end of the first switch is electrically connected to the controller;
  • the power adapter further includes a memory storing a computer program executable by the controller, and the computer program is implemented by the controller, such as The above third party Said charging control method.
  • a fifth aspect of the embodiments of the present invention discloses a charging control system comprising the electronic device according to the above second aspect and the electronic device according to the above fourth aspect.
  • the electronic device determines whether the handshake communication with the power adapter is successful.
  • the charging mode switch is controlled to be closed so that the electronic device is in the fast charge and charge mode, and then Obtaining a first charging configuration parameter of the electronic device in the fast charging mode, and transmitting the obtained first charging configuration parameter to the power adapter, and controlling the power adapter to output the first charging current according to the first charging configuration parameter, thereby Control the output voltage and output current of the power adapter according to the charging mode, thereby improving Product safety.
  • FIG. 1 is a schematic diagram of a circuit structure of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a circuit of a power adapter according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a charging system according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a charging control method disclosed in a first embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a charging control method according to a second embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a charging control method according to a third embodiment of the present invention.
  • FIG. 7 is a sub-flow diagram of step 403 shown in Figure 6;
  • Figure 8 is a sub-flow diagram of step 406 of Figure 6.
  • the embodiment of the invention discloses a charging control method, an electronic device, a power adapter and a charging control system, which can control the output voltage and the output current of the power adapter according to the charging mode, thereby improving the safety of the product, which are respectively described in detail below.
  • FIG. 1 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present invention.
  • the electronic device 100 includes a processor 101, a charge management chip 102, a rechargeable battery 103, a power input interface 104, and a charging mode switch 105.
  • the processor 101 can be a Central Processing Unit (CPU).
  • the power input interface 104 includes a first power pin V BUS1 , a first data pin D+, a second data pin D-, and a first ground pin GND1.
  • the processor 101 is connected to the charge management chip 102 and the rechargeable battery 103 via an I 2 C (Inter-Integrated Circuit) bus, respectively.
  • I 2 C Inter-Integrated Circuit
  • the charge management chip 102 is connected to the first power pin V BUS1 and the ground pin GND1 of the power input interface 104, and the charge management chip 102 is also connected to the rechargeable battery 103.
  • the first end 1051 of the charging mode switch 105 is connected to the power pin V BUS1 of the power input interface 104, the second end 1052 of the charging mode switch 105 is connected to the rechargeable battery 103, and the charging mode switch 105 further includes a control terminal 1053.
  • the control terminal 1053 is connected to the processor 101 for controlling the opening or closing of the charging mode changeover switch 105.
  • the control terminal 1053 controls the first end 1051 to communicate with the second end 1052; when the charging mode switching switch 105 is closed, the control terminal 1053 controls the first end 1051 to be disconnected from the second end 1052. open.
  • the electronic device 100 includes a normal charging channel and a fast charging and charging channel.
  • the normal charging channel corresponds to a normal charging mode
  • the fast charging channel corresponds to a fast charging mode.
  • the electronic device 100 is in the normal charging mode by default, and the charging mode switching switch 105 is turned off by default.
  • the charging management chip 102 acquires the input current I received by the power input interface 104.
  • CHRG that is, the output current of the power output interface 207 of the power adapter 200; then, the charge management chip 102 adjusts the input current I CHRG to the first charging current I CHRG1 and outputs it to the rechargeable battery 103, that is, in the normal charging mode.
  • the charging current obtained by the rechargeable battery 103 is the first charging current I CHRG1 .
  • the processor 101 notifies the charging management chip 102 to turn off its own normal charging channel through the communication interface I 2 C_1, and controls the charging mode switching switch 105 to close so that the input current I CHRG is charged.
  • the changeover switch 105 is directly output to the rechargeable battery 103, that is, in the fast charge and charge mode, the charge current obtained by the rechargeable battery 103 is the output current I CHRG of the power adapter.
  • the output current I CHRG of the power adapter is greater than the first charging current I CHRG1 .
  • the electronic device charges the rechargeable battery 103 through the charging management chip 102 in the normal charging mode, and bypasses the charging management chip 102 in the fast charging mode to charge the rechargeable battery 103.
  • the fast charging mode since the input current I CHRG bypasses the charging management chip 102, the loss of the charging path is reduced, and the current tolerance of the charging management chip 102 can be eliminated, and a larger current pair can be utilized.
  • the rechargeable battery 103 is charged to achieve fast charging.
  • FIG. 2 is a schematic structural diagram of a power adapter 200 according to an embodiment of the present invention.
  • the power adapter 200 includes a controller 201, a feedback control module 202, a current detecting module 203, a voltage detecting module 204, a voltage dividing module 205, a power conversion module 206, and a power output interface 207.
  • the feedback control module 202 is respectively connected to the controller 201, the current detecting module 203, the voltage detecting module 204 and the power conversion module 206.
  • the voltage detecting module 204 is connected to the voltage collecting node N1 of the voltage dividing module 205, and the current detecting module 203 and the voltage dividing module 205 is respectively connected to the ground of the power conversion module 206.
  • the power conversion module 206 is connected to the mains and converts the mains into a specific charging voltage or charging current, and the specific charging voltage or charging current can be output to the electronic device 100 connected to the power adapter 200 through the power output interface 207. Recharge the battery 103.
  • the module referred to in the embodiment of the present application may be a program segment that completes a specific function, and is more suitable than the program to describe the execution process of the software in the processor.
  • the power output interface 207 includes a second power pin V BUS2 , a third data pin D+, a fourth data pin D-, and a second ground pin GND2.
  • the third data pin D+ is disconnected from the fourth data pin D-.
  • the power output interface 207 is connected to the power input interface 104 or to an interface on the charging cable.
  • the first power pin V BUS1 is connected to the second power pin V BUS2
  • the first data pin D+ is connected to the third data pin D+
  • the second data pin D- and the fourth data pin are connected.
  • D-correspondingly connected the first ground pin GND1 is connected to the second ground pin GND2.
  • the corresponding connection includes a power output interface 207 that is directly connected to the power input interface 104 or through a charging cable. Since the third data pin D+ and the fourth data pin D- are disconnected, when the power output interface 207 is connected to the power input interface 104, the electronic device 100 and the power adapter 200 can pass through the first to the fourth.
  • the data pins are connected for data communication.
  • the controller 201 receives the charging sent by the electronic device 100. Electrical configuration parameters, the charging configuration parameters including charging current. In another embodiment, the charging configuration parameter includes a charging current and a charging voltage. After receiving the charging configuration parameter, the controller 201 configures the charging current that the power adapter 200 can provide to the electronic device 100 according to the received charging configuration parameter, generates corresponding configuration information, and generates the generated configuration. The information is transmitted to the electronic device 100. The electronic device 100 receives the configuration information transmitted by the power adapter 200 and verifies whether the received configuration information is correct. When the configuration information is verified to be correct, a confirmation message confirming that the configuration information is correct is sent to the power adapter 200. After receiving the confirmation information, the power adapter 200 controls to output a charging current corresponding to the configuration information. In another embodiment, the power adapter 200 controls the output of the charging current and the charging voltage corresponding to the configuration information.
  • the controller 201 sends the charging configuration parameter to the feedback control module 202.
  • the feedback control module 202 controls the current detection module 203 to detect the output current value converted by the power conversion module 206, and sends the detected current value to the feedback control module 202.
  • the feedback control module 202 generates corresponding configuration information according to the charging current and the current value detected by the current detecting module 203 in the charging configuration parameter, and transmits the configuration information to the electronic device 100.
  • the output current of the power conversion module 206 is adjusted according to the configuration information.
  • the feedback control module 202 compares the current value detected by the current detecting module 203 with the charging current value in the charging configuration parameter; if the two are inconsistent, the feedback control module 202 controls the power conversion module 206 to output and the charging configuration parameter. The current value of the charging current is matched; if the two are consistent, the feedback control module 202 does not process.
  • the feedback control module 202 controls the voltage detection module 204 to detect the voltage value at the voltage collection node N1 of the voltage divider module 205 and transmits the detected voltage value to the feedback control module 202.
  • the feedback control module 202 generates the configuration information according to the charging voltage in the charging configuration parameter and the voltage value detected by the voltage detecting module 204, that is, the configuration information includes configuration information of the current value and configuration information of the voltage value.
  • the feedback control module 202 adjusts the output voltage of the power conversion module 206 according to the configuration information.
  • the power conversion module 206 converts the mains power into an output current and an output voltage that match the charging current and the charging voltage in the charging configuration parameters under the control of the feedback control module 202.
  • the voltage dividing module 205 includes a first resistor R1, a second resistor R2, a third resistor R3, and a second switch 208.
  • a power supply lead V BUS and a ground line GND are connected between the power conversion module 206 and the power output interface 207.
  • the first resistor R1 and the third resistor R3 are connected in series between the power supply lead and the ground. Specifically, the first end of the first resistor R1 is connected to the power lead, the second end of the first resistor R1 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is connected to the ground.
  • a voltage collecting point N1 is formed at a position where the second end of the first resistor R1 is connected to the first end of the third resistor R3.
  • the second resistor R2 is connected in parallel with the second switch 208 between the voltage collecting point N1 and the ground. Specifically, the first end of the second resistor R2 is connected to the voltage collecting electric power N1, the other end of the second resistor R2 is connected to the first end 2081 of the second switch 208, and the second end 2082 of the second switch 208 is grounded. Lines are connected.
  • the second switch 208 further includes a control terminal 2083, and the control terminal 2083 is connected to the controller 201. The second switch 208 is either closed or open under the control of the controller 201.
  • the closing means that the first end 2081 of the second switch 208 is connected to the second end 2082, and the disconnecting means that the first end 2081 of the second switch 208 is disconnected from the second end 2082.
  • the second resistor R2 forms a parallel circuit with the third resistor R3.
  • the voltage detecting module 204 is configured to detect a voltage value between the voltage collecting node N1 and the ground, or the voltage detecting module 204 is configured to detect a voltage value on the third resistor R3.
  • the second switch 208 is off by default.
  • the internal circuit of the voltage dividing module 205 is equivalent to the second resistor R2 connected in parallel with the third resistor R3 and then connected in series with the first resistor R1.
  • the voltage detecting module 204 detects the third resistor on the R3 and the third resistor.
  • the second resistor R2 is connected to the first voltage value U1 of the circuit.
  • the internal circuit of the voltage dividing module 205 is equivalent to the first resistor R1 being connected in series with the third resistor R3, and the voltage detecting module 204 detects the second voltage value U2 on the third resistor R3.
  • the voltage detection module 204 transmits the detected first voltage value or second voltage value to the feedback control module 202.
  • the feedback control module 202 can obtain the voltage value between the power supply lead V BUS and the ground GND through the first voltage value or the second voltage value, that is, the voltage value to be output by the power output interface 207.
  • the feedback control module 202 can calculate the voltage value between the power supply lead V BUS and the ground GND according to the formula (1).
  • V BUS2 that is, the output voltage V BUS2 of the power adapter 200 when the second switch 208 is closed.
  • the feedback control module 202 can calculate the voltage between the power supply lead V BUS and the ground GND according to the formula (2).
  • the value V BUS1 that is, the output voltage V BUS1 of the power adapter 200 when the second switch 208 is turned off.
  • the feedback control module 202 controls the power conversion module 206 to convert the mains voltage to a third output voltage (eg, 3.6V).
  • the feedback control module 202 controls the power conversion module 206 to convert the commercial power voltage to correspond to the charging voltage in the charging configuration parameter according to the charging voltage in the received charging configuration parameter.
  • the first output voltage eg 5V
  • the second output voltage eg 4.2V.
  • the total resistance value of the parallel circuit is smaller than the resistance value of the third resistor R3. Therefore, in the case that the output voltage converted by the power conversion module 206 remains unchanged, the voltage value decomposed by the third resistor R3 when the second switch 208 is turned off is greater than the voltage value of the third resistor R3 when the second switch 208 is closed. That is, the first voltage value U1 is greater than the second voltage value U2.
  • the third output voltage is a safe voltage to avoid damage to the rechargeable battery and other devices when erroneously directly connected to the rechargeable battery of the electronic device, thereby protecting the device of the electronic device.
  • the circuit structure of the voltage dividing module 205 may also be other circuit structures, which is not limited in the embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a charging system according to an embodiment of the present invention.
  • the charging system includes the above electronic device 100 and the above-described power adapter 200.
  • the electronic device 100 is connected to the power adapter 200 through a charging cable (not shown) and receives the electrical energy transmitted by the power adapter 200.
  • the electronic device 100 When the electronic device 100 is electrically connected to the power adapter 200 through the power input interface 104 and the power output interface 207, since the third data pin D+ of the power output interface 207 is disconnected from the fourth data pin D-, the electronic device 100
  • the data pin of the power input interface 104 and the power output interface 207 can be communicably connected to the power adapter 200, for example.
  • a serial communication connection is made.
  • the charging and communication connection between the electronic device 100 and the power adapter 200 is simply referred to as “physical connection”.
  • the processor 101 detects that the power input interface 104 has a voltage or current input, it is determined that the electronic device 100 establishes a physical connection with the power supply unit.
  • the power supply unit may or may not be the power adapter 200.
  • the electronic device 100 can recognize by handshake communication with the power supply unit. If the handshake is successful, the power supply unit is determined to be the power adapter 200, and the electronic device 100 can select to enter the fast charge mode; if the handshake is unsuccessful, the power supply unit is determined to be the power adapter 200, and the electronic device 200 can only enter the normal charge. mode.
  • the specific process of the handshake communication between the electronic device 100 and the power adapter 200 is specifically described by taking the power supply unit as the power adapter 200 as an example, including:
  • the processor 101 transmits handshake request information to the power adapter 200 through the first data pin D+ and the second data pin D- of the power input interface 104.
  • the handshake request information includes preset tag information.
  • the preset tag information is a preset character such as a fast charge recognition character or a preset pulse signal.
  • the controller 201 sends the handshake confirmation information to the electronic device 100, wherein the handshake confirmation signal includes the received marker information.
  • the processor 101 determines whether the flag information included in the handshake confirmation information matches the flag information transmitted by the electronic device 100. If they are consistent, the processor 101 determines that the handshake with the power adapter 200 is successful; if not, the processor 101 determines that the handshake with the power adapter 200 is unsuccessful.
  • the electronic device 100 if the electronic device 100 does not receive the handshake confirmation information sent back by the power adapter within the preset time period, it is determined that the handshake communication with the power adapter fails, that is, the power supply device is not the power adapter 200.
  • the processor 101 controls the charging mode switch 105 to be closed to cause the electronic device 100 to enter the fast charge and charge mode, and acquires the first charging configuration parameter of the electronic device 100 in the fast charge and charge mode and the first acquired
  • the charging configuration parameters are sent to the power adapter 200.
  • the first charging configuration parameter includes a first charging current value of 5A.
  • the first charging configuration parameter includes a first charging current and a first charging voltage value.
  • the controller 201 of the power adapter 200 transmits a first control command to the electronic device 100 and controls the electronic device 100 to close the charging mode switch 105 in response to the first control command.
  • the first control instruction is further used to control the electronic device 100 to send the first charging configuration parameter in the fast charge and charge mode to the power adapter 200.
  • the controller 201 configures the first charging current according to the received first charging configuration parameter and generates first configuration information, and the first configuration is configured.
  • the information is transmitted to the electronic device 100.
  • the first configuration information includes a configured first charging current value.
  • the process of configuring the first charging current by the controller 201 specifically includes:
  • the controller 201 controls the first switch 208 to close and acquires a voltage value on the third resistor R3. At this time, the voltage value on the third resistor R3 is equal to the voltage value of the circuit after the second resistor R2 is connected in parallel with the third resistor R3. Controller 201 Then, the output current of the power adapter 200 is calculated according to the obtained voltage value, and the first charging current value is configured according to the calculated output current and the received first charging configuration parameter. This output current can be calculated according to the following formula (3):
  • I1 is the first charging current value
  • U1 is the voltage value of the third resistor when the first switch is closed
  • R'R is the equivalent resistance value of the charging circuit
  • R1 is the resistance value of the first resistor
  • R2 is the second resistance
  • the resistance value is the resistance of the third resistor.
  • the controller 201 controls the power conversion module 206 to convert the commercial power into a specific charging voltage through the feedback control module 202. In this way, it is ensured that the charging current of the rechargeable battery 103 is maintained at the first charging current in the fast charging mode, and the configuration of the first charging current can be completed.
  • the electronic device 100 After receiving the first configuration information, the electronic device 100 determines whether the first configuration information is correct. If correct, the electronic device 100 transmits a first confirmation message confirming that the first configuration information is correct to the power adapter 200. The first confirmation information indicates that the charging current included in the first configuration information is consistent with the first charging current. If not, the electronic device 100 sends a first prompt message confirming that the first configuration information fails to the power adapter 200. Of course, if it is not correct, the prompt information may not be sent.
  • the controller 201 controls the feedback control module 202 to control the power conversion module 206 to convert the mains current into a first charging current and output it to the electronic device 100.
  • the electronic device 100 can receive the charging current required in the fast charge and charge mode from the power adapter 200.
  • the controller 201 controls the electronic device 100 to enter the normal charging mode. Wherein, the electronic device 100 enters the normal charging mode, and the charging mode switching switch 105 is turned off.
  • the electronic device 100 maintains the charging mode changeover switch 105 in an off state.
  • the power adapter 200 receives the second charging configuration parameter of the electronic device 100 in the normal charging mode, and the second charging configuration parameter includes the second charging current.
  • the processor 101 acquires the charging current value of the rechargeable battery 103 in real time, and determines whether the charging current value is less than a preset threshold. When the acquired charging current value is less than the preset threshold, the processor 101 controls the charging mode switching switch 105 to turn off the electronic device to enter the normal charging mode.
  • the current detecting module 203 of the power adapter 200 obtains the charging current output by the power adapter 200 to the electronic device 100 in real time, and determines whether the charging current is less than a preset value. Threshold.
  • the threshold value is a charging current value when the electronic device 100 enters the constant current charging phase. In a specific embodiment, the threshold is 2A.
  • the feedback control circuit 202 controls the power conversion module 206 to convert the commercial power into a third voltage value and a third current value, wherein the third The voltage value and the third current value are smaller than the charging voltage value and the charging current value in the normal charging mode.
  • the controller 201 sends the acquisition electronic device 100 to the electronic device. The request information of the second charging configuration parameter in the normal charging mode, and controls the first switch 208 to be turned off.
  • the processor 101 controls the charging mode switching switch 105 to disconnect the electronic device 100 into the normal charging mode, and acquires the second charging configuration parameter that the electronic device 100 is in the normal charging mode, and The acquired second charging configuration parameter is sent to the power adapter 200.
  • the second charging configuration parameter includes a charging current in a normal charging mode.
  • the second charging configuration parameter includes a charging current and a charging voltage in a normal charging mode.
  • the charging parameter included in the first charging configuration parameter is the same as the charging voltage included in the second charging configuration parameter, but the charging current included in the first charging configuration parameter and the charging included in the second charging configuration parameter The current is different.
  • the charging voltage and the charging current included in the first charging configuration parameter are different from the charging voltage and the charging current included in the second charging configuration parameter.
  • the charging voltage and the charging current included in the second charging configuration parameter are 5V and 2A, respectively.
  • the electronic device 100 when the electronic device 100 enters the fast charge and charge mode, by detecting the charging current, it can be determined whether the electronic device 100 continues to be in the fast charge and charge mode, and when the electronic device 100 is not suitable for the fast and high current charging mode. Next, the normal charging mode in which the electronic device 100 enters a small current can be controlled. In this way, unnecessary damage of the rechargeable battery 103 of the electronic device 100 can be avoided.
  • the processor 100 when the electronic device 100 receives the request information, not only controls the charging mode switching switch 105 to open but also controls the charging management chip 102 to close to cause the electronic device 100 to enter the normal charging mode.
  • the controller 201 sends the second charging configuration parameter to the feedback control module 202.
  • the feedback control module 202 controls the power conversion module 206 to convert the utility power into a charging voltage and a charging current corresponding to the second charging configuration parameter upon receiving the second charging configuration parameter.
  • the feedback control module 202 configures the second charging current according to the received second charging configuration parameter, generates second configuration information, and sends the second configuration information to the electronic device, where the second configuration information includes configuration. After the second charging current value.
  • the controller 201 controls the first switch 208 to close and controls the voltage detection module 204 to acquire the voltage value on the third resistor R3.
  • the feedback control module 202 calculates an output current of the power adapter according to the acquired voltage value, and performs a configuration of the second charging current value according to the calculated output current and the received second charging configuration parameter.
  • the feedback control module 202 calculates the output current according to equation (4).
  • I2 is the second charging current value
  • U2 is the voltage value of the third resistor when the first switch is off
  • R'R is the equivalent resistance value of the charging circuit
  • R1 is the resistance value of the first resistor
  • R2 is the second value.
  • the resistance of the resistor, R3 is the resistance of the third resistor.
  • the controller 201 determines whether the second confirmation information that the second configuration information transmitted by the electronic device 100 is correct is received. Specifically, when the second charging current in the second configuration information is consistent with the second charging current in the second charging configuration parameter, the electronic device 100 sends the second confirmation information to the power adapter 200.
  • the utility power is converted into a second charging current according to the generated second configuration information and output to the electronic device control.
  • the feedback control module 202 controls the power conversion module 206 to convert the commercial power into the third charging current and the third charging voltage, and outputs the same to the electronic device 100.
  • the voltage V bat of the rechargeable battery 103 will continuously change, assuming that the equivalent resistance of the rechargeable battery 103 in the charging path in the fast charge and charge mode is constant as Rc1, in normal charging.
  • the equivalent resistance in the charging path in the mode is constant Rc2, and the charging current I CHRG of the charging circuit of the rechargeable battery 103 can be calculated according to the following formula (5):
  • V BUS is the output voltage of the power adapter, that is, the voltage difference between the charging line V BUS and the ground GND
  • V bat is the voltage of the rechargeable battery 103
  • Rc is the equivalent resistance value of the charging circuit, that is, the formula ( 3) and R' in the formula (4).
  • the power adapter 200 further includes a voltage dividing module 205 and a voltage detecting module 204.
  • the functions of the voltage dividing module 205 and the voltage detecting module 204 will not be described herein.
  • the output voltage V BUS1 of the power adapter 200 can be calculated according to the formula (6).
  • the feedback control module 202 controls the power conversion module 206 to convert the mains voltage according to the voltage value acquired by the voltage detection module 204 to ensure that the output current of the power adapter 200 is maintained at a specific value.
  • the power conversion module 206 needs to convert the mains voltage into a voltage value corresponding to the output voltage V BUS1 or V BUS2 . In this way, it is ensured that the charging current of the electronic device 100 is in the charging current in the fast charging mode or the normal charging mode.
  • FIG. 4 a flow chart of a charging control method according to an embodiment of the present invention is shown.
  • the charging control method is applied to the electronic device 100 described above, and includes the following steps:
  • Step 301 After establishing a physical connection with the power adapter, determine whether the handshake communication with the power adapter is successful. If yes, go to step 302; if no, go to step 305.
  • the electronic device when the electronic device detects that there is a voltage input or a current input, it determines that it has established a physical connection with the power adapter through the charging cable.
  • the handshake communication between the electronic device and the power adapter specifically includes: the electronic device 100 sends the handshake request information to the power adapter 200, where the handshake request information includes preset tag information, where the preset tag information is a preset word.
  • the character string is, for example, a preset fast charge recognition character or a preset pulse signal or the like.
  • the controller 201 sends the handshake confirmation information to the electronic device 100, wherein the handshake confirmation signal includes the received preset marker information.
  • the processor 101 determines whether the flag information included in the handshake confirmation information matches the flag information transmitted by the electronic device 100. If they are consistent, the processor 101 determines that the handshake with the power adapter 200 is successful; if not, the processor 101 determines that the handshake with the power adapter 200 is unsuccessful.
  • the electronic device if the electronic device does not receive the handshake confirmation information sent back by the power adapter within a preset duration, it is determined that the handshake communication with the power adapter fails.
  • Step 302 Control the charging mode switch to be closed to enable the electronic device to be in a fast charge and charge mode, acquire a first charging configuration parameter in the fast charge and charge mode, and send the acquired first charging configuration parameter to The power adapter.
  • the first charging configuration parameter includes a first charging current, such as 5A. In another embodiment, the first charging configuration parameter includes a first charging current and a first charging voltage, such as 5V.
  • Step 303 Control the power adapter to output a first charging current corresponding to the first charging configuration parameter according to the first charging configuration parameter.
  • step 303 specifically includes controlling the power adapter to output a first charging current and a first charging voltage corresponding to the first charging configuration parameter according to the first charging configuration parameter.
  • Step 304 Determine whether the charging current of the rechargeable battery is less than or equal to a preset current threshold. If yes, go to step 305; if no, go back to step 304.
  • the processor 101 acquires the charging current value of the rechargeable battery 103 in real time, and determines whether the charging current value is less than or equal to the preset current threshold.
  • the power adapter is detected in real time during the charging of the electronic device by using the output current of the power adapter. Whether the charging current of the electronic device is less than or equal to a preset current threshold (for example, 2A).
  • a preset current threshold for example, 2A
  • the power adapter sends the electronic device a prompt message that the charging current of the rechargeable battery is less than or equal to the preset current threshold.
  • the electronic device receives the prompt information that the charging current is less than or equal to the preset current threshold, and controls the charging battery to enter the normal charging mode.
  • Step 305 Control the charging mode switching switch to be off to enable the electronic device to be in a normal charging mode, and acquire a second charging configuration parameter of the electronic device in the normal charging mode and a second charging configuration parameter to be acquired. Sending to the power adapter, and controlling the power adapter to output a second charging current corresponding to the second charging configuration parameter according to the second charging configuration parameter.
  • the second charging configuration parameter includes a second charging current, such as 2A.
  • the second charging configuration parameter includes a second charging current and a second charging voltage, such as 5V.
  • step 305 specifically includes controlling the power adapter to output a second charging current and a second charging voltage corresponding to the second charging configuration parameter according to the second charging configuration parameter.
  • a charging control method provided by another embodiment of the present invention is compared with the method shown in FIG. The following steps are also included after step 302 and before step 303:
  • Step 3021 Receive first configuration information that the power adapter configures the first charging current according to the received first charging configuration parameter; wherein the first configuration information includes the configured charging current value.
  • Step 3022 It is determined whether the received charging current value included in the first configuration information is the same as the first charging current value included in the first charging configuration parameter; if yes, sending the first configuration information correct confirmation information And proceeds to step 303; if not, proceeds to step 305.
  • the verification of the first charging configuration parameter may be performed by the power adapter 200. Therefore, the electronic device 100 further includes the following steps after the step 302 and before the step 303:
  • step 303 Determining whether the first confirmation information that the first charging configuration parameter verification sent back by the power adapter is successful is received. If yes, go to step 303; if no, go to step 305.
  • the verifying, by the power adapter, the first charging configuration parameter sent by the electronic device, the first charging configuration parameter sent by the electronic device received by the power adapter is compared with the pre-stored first preset charging configuration parameter, and determining Whether the first charging configuration parameter is consistent with the first preset charging configuration parameter. If they are consistent, the power adapter sends the confirmation information of the first charging configuration parameter verification to the electronic device; if not, the power adapter 200 sends the first charging configuration parameter verification failure information to the electronic device 100.
  • the power adapter can also verify the first charging configuration parameter sent by the electronic device by other methods.
  • the second configuration information performed by the power adapter according to the second charging configuration parameter sent by the electronic device may be verified by using the method shown in FIG. 5.
  • the second charging configuration parameter sent by the electronic device can also be verified by the power adapter. I will not go into details here.
  • the electronic device can switch its charging mode to the fast charging mode after the handshake communication with the power adapter is successful, and control the charging current and the charging voltage corresponding to the power adapter output and the fast charging mode; After the adapter handshake communication fails, the charging mode is switched to the normal charging mode, and the power adapter outputs the output current and the output voltage corresponding to the normal charging mode; thereby, the charging current and the charging voltage corresponding to the power adapter output can be controlled according to the charging mode.
  • the electronic device In order to prevent the electronic device from erroneously introducing excessive current or voltage to damage the electronic device, thereby improving the safety of the electronic device.
  • FIG. 6 a flow chart of steps of a charging control method according to another embodiment of the present invention is shown.
  • the charging control method is applied to the power adapter 200 described above, and includes the following steps:
  • Step 401 After establishing a physical connection with the electronic device, determine whether the handshake with the electronic device is successful; if yes, proceed to step 402; if no, proceed to step 405.
  • Step 402 Send a first control command to the electronic device and control the electronic device to close the charging mode switch in response to the first control command, and receive the first charging configuration parameter sent by the electronic device.
  • the first charging configuration parameter is a charging configuration parameter of the electronic device in the fast charging mode, and includes a first charging current.
  • the first charging configuration parameter includes a first charging current and a first charging Electric voltage. The first charging configuration parameter is that the electronic device sends the electronic device to the electronic device after the handshake communication with the power adapter is successful and enters the fast charge and charge mode.
  • Step 403 Configure the first charging current according to the received first charging configuration parameter, generate first configuration information, and control to convert the commercial power into the first charging current according to the generated first configuration information, and output the same to the electronic device.
  • Step 405 Send a second control command to the electronic device and control the electronic device to disconnect the charging mode switch in response to the second command, and receive a second charging configuration parameter sent by the electronic device.
  • the second charging configuration parameter is a charging configuration parameter of the electronic device in the normal charging mode, and includes a second charging current.
  • the second charging configuration parameter is that the electronic device sends to the power adapter when the physical connection is established with the power adapter and the handshake communication is unsuccessful.
  • the second charging configuration parameter is that when the charging current is detected to be less than a preset threshold, the electronic device sends to the power adapter or the electronic device sends the second charging configuration parameter in response to the power adapter. Request information to be sent to the power adapter.
  • Step 406 Configure a second charging current according to the received second charging configuration parameter, generate second configuration information, and control to convert the commercial power into a second charging current according to the generated second configuration information, and output the output to the electronic Device.
  • the charging control method provided by the present invention causes the power adapter to provide a suitable charging current and/or charging voltage to the electronic device according to the received first and second charging configuration parameter information after successful communication with the electronic device.
  • the electronic device is prevented from erroneously introducing an excessive current to damage the electronic device, thereby improving the safety of the electronic device.
  • step 404 is further included:
  • the charging current outputted by the power adapter to the electronic device is obtained in real time, and it is determined whether the charging current is less than or equal to the preset current threshold; if yes, the process proceeds to step 407; if not, the process returns to step 403.
  • Step 407 controlling to convert the commercial power into a third voltage value and a third current value.
  • the power adapter when the detected charging current is less than or equal to the preset current threshold, transmits the acquisition to the electronic device while controlling to convert the commercial power into the third voltage value and the third current value.
  • the electronic device is in the request information of the second charging configuration parameter in the normal charging mode.
  • the power adapter also controls the first switch to open.
  • step 404 can also be performed after step 406 at the same time.
  • step 403 in an embodiment is shown, including:
  • Step 4031 Configure the first charging current according to the received first charging configuration parameter to generate first configuration information, where the first configuration information includes the configured first charging current value.
  • step 4031 specifically includes:
  • the output current is calculated by:
  • I1 is the first charging current value
  • U1 is the voltage value of the third resistor when the first switch is closed
  • R'R is the equivalent resistance value of the charging circuit
  • R1 is the resistance value of the first resistor
  • R2 is the second resistance
  • the resistance value is the resistance of the third resistor.
  • Step 4032 the first configuration information is sent to the electronic device
  • Step 4033 it is determined whether the first confirmation information that the first configuration information sent back by the electronic device is correct is received; if yes, the process proceeds to step 4034; if not, the process proceeds to step 405.
  • Step 4034 control the conversion of the commercial power into the first charging current according to the generated first configuration information, and output the same to the electronic device.
  • step 4034 the method further includes the steps of:
  • the configuration information is also sent to the electronic device to verify whether the configuration information is correct. If correct, the first charging current is output to the electronic device. In this way, the electronic device acquires the first charging current in the fast charge and charge mode.
  • step 406 in an embodiment is shown.
  • Step 4061 Configure the second charging current according to the received second charging configuration parameter and generate second configuration information, where the second configuration information includes the configured second charging current value.
  • step 4061 specifically includes:
  • I1 is the second charging current value
  • U2 is the voltage value of the third resistor when the first switch is off
  • R'R is the equivalent resistance value of the charging circuit
  • R1 is the resistance value of the first resistor
  • R2 is the second value.
  • the resistance of the resistor, R3 is the resistance of the third resistor.
  • Step 4062 the second configuration information is sent to the electronic device
  • Step 4063 it is determined whether the second confirmation information that the second configuration information sent back by the electronic device is correct is received; if yes, the process proceeds to step 4064; if not, the process ends.
  • the electronic device 100 sends the second confirmation information to the power adapter 200.
  • Step 4604 controlling to convert the commercial power into a second charging current according to the generated second configuration information and outputting the same to the electronic device.
  • the second charging configuration parameter in the mode is transmitted to the power adapter 200.
  • the configuration information is sent to the electronic device to verify whether the configuration information is correct. If correct, control outputs a second charging current to the electronic device. In this way, the electronic device can correctly acquire the second charging current in the normal charging mode.
  • the power adapter can receive the first charging configuration parameter sent by the electronic device after the handshake communication with the electronic device is successful, and output the output current and the output voltage corresponding to the first charging configuration parameter; After the handshake communication fails, receiving the second charging configuration parameter sent by the electronic device, and outputting the output current and the output voltage corresponding to the second charging configuration parameter; thereby performing corresponding current and voltage output according to the charging configuration parameter sent by the electronic device, To avoid damage to the electronic device by outputting excessive current or voltage, thereby improving the safety of the electronic device.
  • the present invention also provides a charging control system including the above-described power adapter 200 and the above-described electronic device 100 connected to the power adapter 200 via a charging cable.
  • a charging control system including the above-described power adapter 200 and the above-described electronic device 100 connected to the power adapter 200 via a charging cable.
  • the present invention also provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the electronic device side charging control method described in the above method embodiments.
  • the present invention also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the power adapter side charging control method described in the above method embodiments.
  • the steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.
  • the modules in the electronic device and the power adapter can be combined, divided, and deleted according to actual needs.
  • the circuit structure in the electronic device and the power adapter of the embodiment of the present invention can be improved and optimized according to actual needs.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

Abstract

一种充电控制方法、电子装置、电源适配器及充电控制系统，其中方法包括：在和电源适配器建立物理连接后，判断与电源适配器的握手通信是否成功（301）；当握手通信成功时，控制充电模式切换开关闭合使电子装置处于快充充电模式；获取电子装置在快充充电模式下的第一充电配置参数，并将所获取到的第一充电配置参数发送给电源适配器（302），以及控制电源适配器根据第一充电配置参数输出第一充电电流（303）。可以根据充电模式来控制电源适配器的输出电压和电流，从而提高产品的安全性。

Description

充电控制方法、电子装置、电源适配器及充电控制系统 技术领域
本发明涉及电子技术领域，尤其涉及充电控制方法、电子装置、电源适配器及充电控制系统。
背景技术
目前，智能设备越来越受到消费者的青睐，但是智能设备耗电量大，通常需要经常充电。随着智能设备的电池容量越来越高，充电时间相应变长。为节省智能设备的充电时间，快充技术应运而生。
现有的大电流快充方案通常采用直充搭配充电管理芯片，使用两条充电通道的方式，包括普通充电通道和快充充电通道。但目前充电通道的切换都是由设备端或电源适配器端单方面进行控制的，即设备端与电源适配器之间没有相互确认充电参数的情况下进行充电通道的切换，这可能会导致从电源适配器端引入过大的电流或电压，从而烧毁设备端器件，产生安全隐患。
发明内容
本发明实施例公开了一种充电控制方法、电子装置、电源适配器及充电控制系统，可以根据充电模式来控制电源适配器的输出电压和电流，从而提高产品的安全性。
本发明实施例第一方面公开了一种充电控制方法，应用于电子装置，所述电子装置通过充电线缆与电源适配器相连，所述电子装置包括处理器、充电电池和充电模式切换开关，所述充电模式切换开关的第一端与所述电子装置的电源输入接口的电源引脚连接，所述充电模式切换开关的第二端与所述充电电池连接，所述充电模式切换开关的控制端与所述处理器连接；当所述充电模式切换开关闭合时，所述电子装置处于快充充电模式，对应于第一充电配置参数；当所述充电模式切换开关断开时，所述电子装置处于普通充电模式，对应于第二充电配置参数；第一充电配置参数包括第一充电电流，第二充电配置参数包括第二充电电流，所述第一充电电流大于所述第二充电电流，所述方法包括：
在和所述电源适配器建立物理连接后，判断与所述电源适配器的握手通信是否成功；
当与所述电源适配器握手通信成功时，控制所述充电模式切换开关闭合使所述电子装置处于所述快充充电模式；
获取所述电子装置在所述快充充电模式下的第一充电配置参数，并将所获取到的第一充电配置参数发送给所述电源适配器；以及
控制所述电源适配器根据所述第一充电配置参数输出第一充电电流。
本发明实施例第二方面公开了一种电子装置，通过充电线缆与电源适配器相连，包括处理器、充电电池和充电模式切换开关，所述充电模式切换开关的第一端与所述电子装置的电源输入接口的电源引脚连接，所述充电模式切换开关的第二端与所述充电电池连接， 所述充电模式切换开关的控制端与所述处理器连接；当所述充电模式切换开关闭合时，所述电子装置处于快充充电模式，对应于第一充电配置参数；当所述充电模式切换开关断开时，所述电子装置处于普通充电模式，对应于第二充电配置参数；所述第一充电配置参数所包括的第一充电电流大于所述第二充电配置参数所包括的第二充电电流；所述电子装置还包括存储有所述处理器可执行的计算机程序的存储器，所述计算机程序被所述处理器执行时实现如上述第一方面所述的充电控制方法。
本发明实施例第三方面公开了另一种充电控制方法，应用于电源适配器，所述电源适配器通过充电线缆给电子装置供电，所述电子装置包括充电模式切换开关，当所述充电模式切换开关闭合时，所述电子装置进入快充充电模式，当所述充电模式切换开关闭合时，所述电子装置进入普通充电模式；所述电源适配器包括电源输出接口、及控制器，所述电源输出接口包括电源输出引脚、第一数据引脚、第二数据引脚及接地引脚，所述第一数据引脚与所述第二数据引脚相断开且分别与所述控制器相连；所述方法包括：
在与所述电子装置建立物理连接后，判断与所述电子装置的握手是否成功；
在与所述电子装置握手成功时，发送第一控制指令给所述电子装置并控制所述电子装置响应所述第一控制指令闭合所述充电模式切换开关；
接收所述电子装置在所述快充充电模式下的第一充电配置参数，所述第一充电配置参数包括第一充电电流；
根据接收到的第一充电配置参数对第一充电电流进行配置并生成第一配置信息；以及
根据所生成的第一配置信息控制将市电转化为所述第一充电电流并输出给所述电子装置。
本发明实施例第四方面公开了一种电源适配器，通过充电线缆给电子装置供电，包括电源输出接口，分压模块、以及控制器，所述分压模块包括第一电阻、第二电阻、第三电阻和第一开关，所述电源输出接口包括电源输出引脚、第一数据引脚、第二数据引脚及接地引脚，所述第一数据引脚与所述第二数据引脚相断开且分别与所述控制器相连，所述第一电阻的第一端连接于所述电源输出引脚上，所述第一电阻的第二端通过所述第三电阻连接于所述接地引脚上，所述第一开关的第一端连接到所述接地引脚上，所述第二开关的第二端通过所述第二电阻连接到所述第一电阻的第二端上，所述第一开关的控制端与所述控制器电连接；所述电源适配器还包括存储有所述控制器可执行的计算机程序的存储器，所述计算机程序被所述控制器执行时实现如上述第三方面所述的充电控制方法。
本发明实施例第五方面公开了一种充电控制系统，包括如上述第二方面所述的电子装置以及如上述第四方面所述的电子装置。
本发明实施例中，电子装置在和电源适配器建立物理连接后，判断与电源适配器的握手通信是否成功，当握手通信成功时，首先控制充电模式切换开关闭合使电子装置处于快充充电模式，然后获取电子装置在快充充电模式下的第一充电配置参数，并将所获取到的第一充电配置参数发送给电源适配器，以及控制电源适配器根据第一充电配置参数输出第一充电电流，从而可以根据充电模式来控制电源适配器的输出电压和输出电流，从而提高 产品的安全性。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例公开的一种电子装置的电路结构示意图；
图2是本发明实施例公开的一种电源适配器的电路结构示意图；
图3是本发明实施例公开的一种充电系统的架构示意图；
图4是本发明第一实施例公开的充电控制方法的流程示意图；
图5是本发明第二实施例公开的充电控制方法的流程示意图；
图6为本发明第三实施例公开的充电控制方法的流程示意图；
图7为图6所示步骤403的子流程图；
图8为图6所示步骤406的子流程图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
本发明实施例公开了一种充电控制方法、电子装置、电源适配器及充电控制系统，可以根据充电模式来控制电源适配器的输出电压和输出电流，从而提高产品的安全性，以下分别进行详细说明。
请参阅图1，图1为本发明实施例提供的一种电子装置100的结构示意图。该电子装置100包括处理器101、充电管理芯片102、充电电池103、电源输入接口104及充电模式切换开关105。该处理器101可为中央处理器(Central Processing Unit，CPU)。该电源输入接口104包括第一电源引脚VBUS1、第一数据引脚D+、第二数据引脚D-、及第一接地引脚GND1。处理器101通过I2C(Inter-IntegratedCircuit)总线分别与充电管理芯片102和充电电池103连接。充电管理芯片102与电源输入接口104的第一电源引脚VBUS1及接地引脚GND1相连，充电管理芯片102还与充电电池103相连。充电模式切换开关105的第一端1051与电源输入接口104的电源引脚VBUS1连接，充电模式切换开关105的第二端1052与充电电池103相连，充电模式切换开关105还包括一控制端1053。控制端1053与处理器101连接，处理器101用于控制充电模式切换开关105的断开或闭合。当充电模式切换开关105断开时，控制端1053控制第一端1051与第二端1052相连通；当充电模式切换开关105闭合时，控制端1053控制第一端1051与第二端1052相断开。
请一并参阅图3，处理器101与电源输入接口104的第一数据引脚D+和第二数据引脚D- 电连接。
该电子装置100包括普通充电通道和快充充电通道，普通充电通道对应普通充电模式，快充充电通道对应快充充电模式。电子装置100默认处于普通充电模式下，且充电模式切换开关105默认断开，电子装置100检测到有电压输入或者电流输入存在时，充电管理芯片102获取电源输入接口104所接收到的输入电流ICHRG，也即是电源适配器200的电源输出接口207的输出电流；然后，充电管理芯片102将该输入电流ICHRG调整为第一充电电流ICHRG1并输出至充电电池103，即在普通充电模式下，充电电池103获得的充电电流为第一充电电流ICHRG1。当电子装置100需要进入快充充电模式下，处理器101通过通信接口I2C_1通知充电管理芯片102关闭其自身的普通充电通道，并控制充电模式切换开关105闭合使输入电流ICHRG经充电模式切换开关105直接输出至充电电池103，即在快充充电模式下，充电电池103获得的充电电流为电源适配器的输出电流ICHRG。在本发明的实施方式中，电源适配器的输出电流ICHRG大于第一充电电流ICHRG1。
综上所述，电子装置在普通充电模式下通过充电管理芯片102来给充电电池103充电，在快充充电模式下绕开充电管理芯片102来给充电电池103充电。在快充充电模式下，由于输入电流ICHRG绕开了充电管理芯片102，从而减小了充电路径的损耗，并且可以无需考虑充电管理芯片102的电流耐受能力，可以利用更大的电流对充电电池103进行充电，以实现快速充电。
请参阅图2，图2为本发明实施例提供的一种电源适配器200的结构示意图。该电源适配器200包括控制器201、反馈控制模块202、电流检测模块203、电压检测模块204、分压模块205、电源转换模块206和电源输出接口207。反馈控制模块202分别与控制器201、电流检测模块203、电压检测模块204和电源转换模块206连接，电压检测模块204与分压模块205的电压采集节点N1连接，电流检测模块203和分压模块205分别与电源转换模块206的地线相连。电源转换模块206与市电相连，并将该市电转换为特定的充电电压或充电电流，该特定的充电电压或充电电流能通过电源输出接口207输出给与电源适配器200相连的电子装置100的充电电池103。需要说明的是，本申请实施例所称的模块可以是完成一特定功能的程序段，比程序更适合于描述软件在处理器中的执行过程。
电源输出接口207包括第二电源引脚VBUS2、第三数据引脚D+、第四数据引脚D-、及第二接地引脚GND2。其中，第三数据引脚D+与第四数据引脚D-断开。当电源适配器200与电子装置100进行充电连接时，电源输出接口207与电源输入接口104相连或与充电线缆上的接口相连。具体的，第一电源引脚VBUS1与第二电源引脚VBUS2对应相连，第一数据引脚D+与第三数据引脚D+对应相连，第二数据引脚D-与第四数据引脚D-对应相连，第一接地引脚GND1与第二接地引脚GND2对应相连。所述对应连接包括电源输出接口207与电源输入接口104直接相连或通过充电线缆。由于第三数据引脚D+与第四数据引脚D-是断开的，故此，当电源输出接口207与电源输入接口104对应相连时，电子装置100与电源适配器200可通过第一至第四数据引脚进行数据通信连接。
当电源适配器200与电子装置100握手成功后，控制器201接收该电子装置100发送的充 电配置参数，该充电配置参数包括充电电流。在另一实施方式中，该充电配置参数包括充电电流和充电电压。控制器201在接收到该充电配置参数后，则根据所接收到的充电配置参数对电源适配器200所能提供给电子装置100的充电电流进行配置并生成相应的配置信息，以及将所生成的配置信息发送给电子装置100。电子装置100接收电源适配器200发送的配置信息，并验证所接收到的配置信息是否正确。当该配置信息验证正确时，发送确认该配置信息正确的确认信息给电源适配器200。电源适配器200在接收到该确认信息后，控制输出与该配置信息相对应的充电电流。在另一实施方式中，电源适配器200控制输出与该配置信息相对应的充电电流和充电电压。
具体的，控制器201在接收到该充电配置参数之后，将该充电配置参数发送给反馈控制模块202。反馈控制模块202控制电流检测模块203检测经电源转换模块206转换后的输出电流值，并将检测到的电流值发送给反馈控制模块202。反馈控制模块202根据充电配置参数中的充电电流和电流检测模块203检测到的电流值生成相应的配置信息并将该配置信息发送给电子装置100。当收到电子装置100发送回来的确认该配置信息正确的确认信息时，则根据该配置信息调整电源转换模块206的输出电流。具体地，反馈控制模块202将电流检测模块203检测到的电流值与充电配置参数中的充电电流值进行对比；若两者不一致，则反馈控制模块202控制电源转换模块206输出与充电配置参数中的充电电流匹配的电流值；若两者一致，则反馈控制模块202不作处理。
在另一实施方式中，反馈控制模块202控制电压检测模块204检测分压模块205的电压采集节点N1处的电压值，并将检测到的电压值发送给反馈控制模块202。反馈控制模块202根据充电配置参数中的充电电压和电压检测模块204检测到的电压值生成上述配置信息，即该配置信息中既包括电流值的配置信息又包括电压值的配置信息。当收到电子装置100发送回来的确认该配置信息正确的确认信息时，反馈控制模块202根据该配置信息调整电源转换模块206的输出电压。电源转换模块206在反馈控制模块202的控制下将市电电源转换成与充电配置参数中的充电电流和充电电压匹配的输出电流和输出电压。
本发明实施例中，分压模块205包括第一电阻R1、第二电阻R2、第三电阻R3和第二开关208。电源转换模块206与电源输出接口207之间连接有一电源引线VBUS及一地线GND。第一电阻R1与第三电阻R3串联于电源引线与地线之间。具体的，第一电阻R1的第一端与该电源引线相连，第一电阻R1的第二端与第三电阻R3的第一端相连，第三电阻R3的第二端与地线相连。且在第一电阻R1的第二端与第三电阻R3的第一端相连接的位置处形成一电压采集点N1。第二电阻R2与第二开关208并联于电压采集点N1与地线之间。具体的，第二电阻R2的第一端与所述电压采集电N1相连，第二电阻R2的另一端与第二开关208的第一端2081相连，第二开关208的第二端2082与地线相连。第二开关208还包括一控制端2083，该控制端2083与控制器201相连。该第二开关208在控制器201的控制下或闭合或断开。所述闭合是指第二开关208的第一端2081与第二端2082相连，所述断开是指第二开关208的第一端2081与第二端2082相断开。当第二开关208闭合时，第二电阻R2与第三电阻R3形成并联电路。电压检测模块204用于检测电压采集节点N1与地线之间的电压值，或者说，电压检测模块204 用于检测第三电阻R3上的电压值。
第二开关208默认是断开的。当第二开关208闭合时，分压模块205的内部电路等效于第二电阻R2与第三电阻R3并联之后与第一电阻R1串联，如此，电压检测模块204检测第三电阻上R3与第二电阻R2并联电路的第一电压值U1。当第二开关208断开时，分压模块205的内部电路等效于第一电阻R1与第三电阻R3串联，电压检测模块204检测第三电阻上R3上的第二电压值U2。电压检测模块204将所检测到的第一电压值或第二电压值发送给反馈控制模块202。反馈控制模块202通过第一电压值或第二电压值可获取到电源引线VBUS与地线GND之间的电压值，即电源输出接口207所要输出的电压值。当第二开关208闭合，电压检测模块204所检测到的电压为第一电压值U1时，则反馈控制模块202根据公式(1)可计算出电源引线VBUS与地线GND之间的电压值VBUS2,也即第二开关208闭合时电源适配器200的输出电压VBUS2。
Figure PCTCN2017115465-appb-000001
当第二开关208断开，电压检测模块204所检测到的电压为第二电压值U2时，则反馈控制模块202根据公式(2)可计算出电源引线VBUS与地线GND之间的电压值VBUS1,也即第二开关208断开时电源适配器200的输出电压VBUS1。
Figure PCTCN2017115465-appb-000002
反馈控制模块202接收到第一电压值V1后控制电源转换模块206将市电电压转换为第三输出电压(例如3.6V)。反馈控制模块202接收到第二电压值V2后，根据所接收到的充电配置参数中的充电电压，控制电源转换模块206将市电电压转换为与所述充电配置参数中的充电电压相对应的第一输出电压(例如5V)或第二输出电压(例如4.2V)。
由电路特性可知，第二电阻R2与第三电阻R3并联之后，并联电路的总电阻值小于第三电阻R3的电阻值。故此，在经电源转换模块206转换后的输出电压保持不变的情况下，第二开关208断开时第三电阻R3分解的电压值大于第二开关208闭合时第三电阻R3分解的电压值，也即是说第一电压值U1大于第二电压值U2。
进一步地，可以设定当第二开关208断开时，第三输出电压为一安全电压，以避免在错误地直连电子装置的充电电池时损坏充电电池及其他器件，从而保护电子装置的器件。需要说明的是，分压模块205的电路结构也可以为其他电路结构，本发明实施例不作限定。
请一并参阅图3，图3为本发明实施例提供的一种充电系统的架构示意图。该充电系统包括上述电子装置100和上述电源适配器200。其中，电子装置100通过充电线缆(图未示)与电源适配器200相连接，并接收电源适配器200所输送的电能。
电子装置100通过电源输入接口104及电源输出接口207与电源适配器200进行充电连接时，由于电源输出接口207的第三数据引脚D+与第四数据引脚D-断开，故此，电子装置100通过电源输入接口104与电源输出接口207的数据引脚与电源适配器200可进行通信连接，例 如进行串口通信连接。需要说明的是，在本发明的实施例中，将电子装置100与电源适配器200之间的充电及通信连接简称为“物理连接”。
具体的，处理器101检测到电源输入接口104有电压或电流输入时，判断电子装置100与以供电单元建立了物理连接。其中，该供电单元可能是该电源适配器200，也可能不是。
为了判断该供电单元是否为上述电源适配器200，电子装置100可通过与供电单元的握手通信进行识别。若握手成功，则判断该供电单元为上述电源适配器200，电子装置100可选择进入快充充电模式；若握手不成功，则判断该供电单元为上述电源适配器200，电子装置200只可进入普通充电模式。
下面以供电单元为上述电源适配器200为例具体说明电子装置100与电源适配器200进行握手通信的具体过程，包括：
当电子装置100判断出与电源适配器200建立了物理连接时，处理器101通过电源输入接口104的第一数据引脚D+和第二数据引脚D-向电源适配器200发送握手请求信息。该握手请求信息包括预设的标记信息。其中，该预设的标记信息为预设的字符例如快充识别字符或预设的脉冲信号等。电源适配器200接收到该握手请求信息后，控制器201向电子装置100发送握手确认信息，其中，该握手确认信号中包括了所接收到的标记信息。电子装置100在接收到电源适配器200发送回来的握手确认信息时，处理器101判断该握手确认信息中所包括的标记信息与电子装置100所发送出去的标记信息是否相一致。若一致，则处理器101判断与电源适配器200握手成功；若不一致，则处理器101判断与电源适配器200握手不成功。
在一些实施方式中，若电子装置100在预设时长内未接收到电源适配器发送回来的握手确认信息，则确定与电源适配器握手通信失败，也即该供电装置不是该电源适配器200。
当然，电子装置100与电源适配器200进行握手通信的具体过程并不局限于上述所示方式。
当握手成功时，处理器101控制充电模式切换开关105闭合使电子装置100进入快充充电模式，并获取电子装置100在快充充电模式下的第一充电配置参数及将所获取到的第一充电配置参数发送给电源适配器200。在一实施方式中，该第一充电配置参数包括的第一充电电流值为5A。在另一实施方式中，该第一充电配置参数包括第一充电电流和第一充电电压值。
在另一实施方式中，当握手成功时，电源适配器200的控制器201发送第一控制指令给电子装置100并控制电子装置100响应所述第一控制指令闭合所述充电模式切换开关105。所述第一控制指令还用于控制电子装置100将其处于快充充电模式下的第一充电配置参数发送给电源适配器200。
电源适配器200接收到电子装置100发送的第一充电配置参数时，控制器201根据所接收到的第一充电配置参数对第一充电电流进行配置并生成第一配置信息，并将该第一配置信息发送给电子装置100。该第一配置信息包括配置后的第一充电电流值。
在本发明的一实施方式中，控制器201对第一充电电流进行配置的过程具体包括：
控制器201控制所述第一开关208闭合，并获取所述第三电阻R3上的电压值。此时该第三电阻R3上的电压值等于第二电阻R2与第三电阻R3并联之后的电路的电压值。控制器201 再根据所获取到的电压值计算电源适配器200的输出电流，并根据所计算出的输出电流与所接收到的第一充电配置参数进行第一充电电流值的配置。该输出电流可根据下面的公式(3)进行计算：
Figure PCTCN2017115465-appb-000003
其中，I1为第一充电电流值，U1为第一开关闭合时第三电阻的电压值，R′R为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
当所计算出来的充电电流值与第一充电电流值不一致时，所述控制器201通过反馈控制模块202控制电源转化模块206将市电转化为特定的充电电压。如此，可确保充电电池103在快充模式下充电电流维持在第一充电电流，并可完成第一充电电流的配置。
电子装置100在接收到该第一配置信息后，并判断该第一配置信息是否正确。若正确，电子装置100发送确认所述第一配置信息正确的第一确认信息给电源适配器200。所述第一确认信息表明第一配置信息中所包括的充电电流与所述第一充电电流相一致。若不正确，电子装置100发送确认所述第一配置信息失败的第一提示信息给电源适配器200。当然，若不正确，也可不发送该提示信息。
电源适配器200接收到所述第一确认信息后，控制器201控制反馈控制模块202控制电源转换模块206将市电电流转换为第一充电电流并输出给电子装置100。如此，如此，电子装置100可从电源适配器200上接收到快充充电模式下所需要的充电电流。
电源适配器200未接收到所述第一确认信息后，控制器201控制所述电子装置100进入普通充电模式。其中，所述电子装置100进入普通充电模式需使充电模式切换开关105断开。
此外，当电子装置100与电源适配器200之间的握手通信不成功时，电子装置100维持充电模式切换开关105处于断开的状态。如此，当未接收到第一确认信息或握手失败时，电源适配器200接收电子装置100在普通充电模式下的第二充电配置参数，所述第二充电配置参数包括第二充电电流。
电子装置100在快充充电模式下，处理器101实时获取充电电池103的充电电流值，并判断该充电电流值是否小于预设的阈值。当所获取到的充电电流值小于该预设的阈值时，处理器101控制充电模式切换开关105断开使电子装置进入普通充电模式。在另一实施方式中，电源适配器200在给电子装置100供电时，电源适配器200的电流检测模块203实时获取电源适配器200输出给电子装置100的充电电流，并判断该充电电流是否小于预设的阈值。其中，该阈值为电子装置100进入恒流充电阶段时的充电电流值。在一具体的实施例中，该阈值为2A。当电流检测模块203所获取到的充电电流值小于或等于该阈值时，表明该电子装置100不适合处于快充充电模式下的大电流进行充电；若此时，电源适配器200继续以大电流给电子装置100进行充电，将损坏电子装置100的充电电池103。因此，当电流检测模块203所获取到的充电电流值小于或等于该阈值时，反馈控制电路202控制电源转化模块206将市电转化为第三电压值和第三电流值，其中，该第三电压值与第三电流值小于普通充电模式下的充电电压值与充电电流值。此外，所述控制器201向电子装置发送获取电子装置100 处于普通充电模式下的第二充电配置参数的请求信息，并控制第一开关208断开。
当电子装置100接收到该请求信息时，处理器101控制充电模式切换开关105断开使电子装置100进入普通充电模式，并获取电子装置100处于普通充电模式下的第二充电配置参数，以及将所获取到的第二充电配置参数发送给电源适配器200。该第二充电配置参数包括普通充电模式下的充电电流。在另一实施方式中，该第二充电配置参数包括普通充电模式下的充电电流和充电电压。在一实施方式中，第一充电配置参数所包括的充电电压与第二充电配置参数所包括的充电电压相同，但第一充电配置参数所包括的充电电流与第二充电配置参数所包括的充电电流不同。在另一实施方式中，第一充电配置参数所包括的充电电压和充电电流与第二充电配置参数所包括的充电电压和充电电流均不相同。在一具体的实现方式中，该第二充电配置参数所包括的充电电压和充电电流分别为5V和2A。
如此，在电子装置100进入快充充电模式下，通过对充电电流进行检测，可判断该电子装置100是否继续适合处于快充充电模式下，当该电子装置100不适合处于快速大电流的充电模式下，可控制电子装置100进入小电流的普通充电模式。如此，可避免电子装置100的充电电池103的不必要的损伤。
在另一实施方式中，电子装置100接收到该请求信息时，处理器100不仅控制充电模式切换开关105断开还控制充电管理芯片102闭合使电子装置100进入普通充电模式。
电源适配器200在接收到该第二充电配置参数时，控制器201将该第二充电配置参数发送给反馈控制模块202。反馈控制模块202在接收到该第二充电配置参数时控制电源转化模块206将市电转化为与第二充电配置参数相对应的充电电压与充电电流。
具体的，反馈控制模块202根据所接收到的第二充电配置参数对第二充电电流进行配置并生成第二配置信息，以及将该第二配置信息发送给电子装置，该第二配置信息包括配置后的第二充电电流值。在一具体的实施例中，控制器201控制所述第一开关208闭合，并控制电压检测模块204获取所述第三电阻R3上的电压值。反馈控制模块202根据所获取到的电压值计算所述电源适配器的输出电流，并根据所计算出的输出电流与所接收到的第二充电配置参数进行第二充电电流值的配置。反馈控制模块202根据公式(4)计算该输出电流。
Figure PCTCN2017115465-appb-000004
其中，I2为第二充电电流值，U2为第一开关断开时第三电阻的电压值，R′R为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
电源适配器200在将第二配置信息发送给电子装置100后，控制器201判断是否接收到电子装置100发送回来的第二配置信息正确的第二确认信息。具体的，当该第二配置信息中的第二充电电流与第二充电配置参数中的第二充电电流一致时，电子装置100发送给第二确认信息给电源适配器200。
若接收到第二确认信息，则根据所生成的第二配置信息控制将市电转化为第二充电电流并输出给所述电子装置控制。
若没有接收第二确认信息，则反馈控制模块202控制电源转化模块206将市电转换为第 三充电电流与第三充电电压，并输出给电子装置100。电子装置100的充电电池103在充电过程中，该充电电池103的电压Vbat会不断的变化，假定充电电池103在快充充电模式下的充电通路中的等效电阻恒定为Rc1，在普通充电模式下的充电通路中的等效电阻恒定为Rc2，则充电电池103的充电电路的充电流ICHRG可根据如下公式(5)计算：
Figure PCTCN2017115465-appb-000005
其中，VBUS为电源适配器的输出电压，即充电线VBUS与地线GND之间的电压差，Vbat为充电电池103的电压，Rc为充电电路的等效电阻值，也即是公式(3)和公式(4)中的R′。当在快充充电模式，Rc＝Rc1；当在普通充电模式下，Rc＝Rc2。
由上述公式可知，当电子装置100处于快充充电模式时，为了维持电子装置100在快充充电模式下的第一充电电流ICHRG1，由于充电电池103的电压Vbat会不断的变化，因此，需要对电源适配器200的输出电压VBUS不断地进行调整。
为了及时获取到电源适配器200的输出电压VBUS，电源适配器200还包括分压模块205及电压检测模块204。为节省篇幅及避免重复起见，在此就不再对该分压模块205与电压检测模块204的功能进行赘述。
可以理解的是，当第二开关208断开时，假设电压检测模块204所检测到的电压为U2，则根据公式(6)可计算出电源适配器200的输出电压VBUS1，
Figure PCTCN2017115465-appb-000006
当第二开关208闭合时，假设电压检测模块204所检测到的电压为U1；则根据公式(7)可计算出电源适配器200的输出电压VBUS2。
Figure PCTCN2017115465-appb-000007
因此，反馈控制模块202根据电压检测模块204所获取到的电压值控制电源转换模块206将市电电压进行转换，以确保电源适配器200的输出电流维持在特定的值。具体的，电源转换模块206需要将市电电压转换为与上述输出电压VBUS1或VBUS2相对应的电压值。如此，才可确保电子装置100的充电电流处于快充充电模式或普通充电模式下的充电电流。
请参阅图4，所示为本发明一实施例中的充电控制方法的流程示意图。该充电控制方法应用于上述电子装置100，包括以下步骤：
步骤301、在和电源适配器建立物理连接后，判断与所述电源适配器的握手通信是否成功。若是，则执行步骤302；若否，则执行步骤305。
本发明实施例中，电子装置检测到有电压输入或者电流输入存在时，判断其与电源适配器通过充电线缆建立了物理连接。
电子装置与电源适配器进行握手通信具体包括：电子装置100向电源适配器200发送握手请求信息，该握手请求信息包括预设的标记信息，其中，该预设的标记信息为预设的字 符串例如预设的快充识别字符或预设的脉冲信号等。电源适配器200接收到该握手请求信息后，控制器201向电子装置100发送握手确认信息，其中，该握手确认信号中包括了所接收到的预设标记信息。电子装置100在接收到电源适配器200发送回来的握手确认信息时，处理器101判断该握手确认信息中所包括的标记信息与电子装置100所发送出去的标记信息是否相一致。若一致，则处理器101判断与电源适配器200握手成功；若不一致，则处理器101判断与电源适配器200握手不成功。
在一些实施方式中，若电子装置在预设时长内未接收到电源适配器发送回来的握手确认信息，则确定与电源适配器握手通信失败。
步骤302、控制充电模式切换开关闭合使所述电子装置处于快充充电模式，并获取在所述快充充电模式下的第一充电配置参数，以及将所获取到的第一充电配置参数发送给所述电源适配器。
本发明实施例中，第一充电配置参数包括第一充电电流例如5A。在另一实施方式中，第一充电配置参数包括第一充电电流和第一充电电压例如5V。
步骤303、控制所述电源适配器根据所述第一充电配置参数输出与所述第一充电配置参数相对应的第一充电电流。
在另一实施方式中，步骤303具体包括控制所述电源适配器根据所述第一充电配置参数输出与所述第一充电配置参数相对应的第一充电电流和第一充电电压。
步骤304、判断充电电池的充电电流是否小于或等于预设电流阈值。若是，则进入步骤305；若否，则返回步骤304。
在本实施方式中，电子装置100在快充充电模式下，处理器101实时获取充电电池103的充电电流值，并判断该充电电流值是否小于或等于预设电流阈值。
本另一实施例中，在电子装置控制电源适配器根据第一充电配置参数进行输出电压和输出电流的配置完成后，在利用电源适配器的输出电流对电子装置进行充电的过程中，电源适配器实时检测电子装置的充电电流是否小于或等于预设电流阈值(例如2A)。当检测到充电电池的充电电流小于或等于预设电流阈值时，则电源适配器给电子装置发送充电电池的充电电流小于或等于预设电流阈值的提示信息。电子装置接收到该充电电流小于或等于预设电流阈值的提示信息，便控制充电电池进入普通充电模式。
步骤305、控制所述充电模式切换开关断开使所述电子装置处于普通充电模式，并获取电子装置处于所述普通充电模式下的第二充电配置参数及将所获取到的第二充电配置参数发送给所述电源适配器，以及控制所述电源适配器根据所述第二充电配置参数输出与所述第二充电配置参数对应的第二充电电流。
本发明实施例中，第二充电配置参数包括第二充电电流例如2A。在另一实施方式中，第二充电配置参数包括第二充电电流和第二充电电压例如5V。在另一实施方式中，步骤305具体包括控制所述电源适配器根据所述第二充电配置参数输出与所述第二充电配置参数相对应的第二充电电流和第二充电电压。
请参见图5，在本发明的另一实施方式所提供的充电控制方法较之图4所示的方法在步 骤302之后及与步骤303之前还包括以下步骤：
步骤3021、接收电源适配器根据所接收到的第一充电配置参数对第一充电电流进行配置的第一配置信息；其中，该第一配置信息包括配置后的充电电流值。
步骤3022、判断所接收到的该第一配置信息中所包括的充电电流值与第一充电配置参数中所包括的第一充电电流值是否相同；若是，则发送第一配置信息正确的确认信息，并进入步骤303；若否，则进入步骤305。
在另一实施方式中，对该第一充电配置参数的校验可由电源适配器200来执行，故此，电子装置100在步骤302之后及与步骤303之前还具体以下步骤：
判断是否接收到电源适配器发送回来的所述第一充电配置参数校验成功的第一确认信息。若是，则进入步骤303；若否，则进入步骤305。
电源适配器对电子装置发送的第一充电配置参数进行校验具体包括：电源适配器所接收到的电子装置发送的第一充电配置参数与预先存储的第一预设的充电配置参数进行比较，并判断该第一充电配置参数与该第一预设的充电配置参数是否一致。若一致，电源适配器给电子装置发送第一充电配置参数校验通过的确认信息；若不一致，电源适配器200给电子装置100发送第一充电配置参数校验失败的信息。
当然，电源适配器还可通过其他方法对电子装置发送的第一充电配置参数进行校验。
此外，还可采用图5所示的方法对电源适配器根据电子装置发送的第二充电配置参数进行的第二配置信息进行校验。当然，也可由电源适配器对电子装置发送的第二充电配置参数进行校验。在此不做具体赘述。
采用上述充电控制方法，电子装置可以在与电源适配器握手通信成功后，将其充电模式切换为快充充电模式，并控制电源适配器输出与快充充电模式对应的充电电流和充电电压；若与电源适配器握手通信失败后，将其充电模式切换为普通充电模式，并控制电源适配器输出与普通充电模式相对应的输出电流和输出电压；从而可以根据充电模式控制电源适配器输出对应的充电电流和充电电压，以避免电子装置错误地引入过大的电流或电压而损坏电子装置，从而提高电子装置的安全性。
请参阅图6，所示为本发明另一实施例提供的充电控制方法的步骤流程图。该充电控制方法应用于上述电源适配器200上，包括以下步骤：
步骤401、在和电子装置建立物理连接后，判断与电子装置之间的握手是否成功；若是，则进入步骤402；若否，则进入步骤405。
其中，电子装置与所述适配器之间的通信连接和握手通信的具体内容请参见前描述，再此不做赘述。
步骤402、发送第一控制指令给电子装置并控制电子装置响应所述第一控制指令闭合所述充电模式切换开关，并接收所述电子装置发送的第一充电配置参数。
本发明实施例中，第一充电配置参数是电子装置在快充充电模式下的充电配置参数，包括第一充电电流。在另一实施方式中，该第一充电配置参数包括第一充电电流和第一充 电电压。该第一充电配置参数是电子装置在与电源适配器握手通信成功后且进入快充充电模式后发送给电子装置的。
步骤403、根据接收到的第一充电配置参数对第一充电电流进行配置并生成第一配置信息，以及根据所生成的第一配置信息控制将市电转化为第一充电电流并输出给电子装置。
步骤405、发送第二控制指令给电子装置并控制电子装置响应所述第二指令断开所述充电模式切换开关，并接收所述电子装置发送的第二充电配置参数。
在本实施方式中，第二充电配置参数是电子装置在普通充电模式下的充电配置参数，包括第二充电电流。该第二充电配置参数是电子装置在与电源适配器建立物理连接且握手通信不成功时发送给电源适配器的。
在另一实施方式中，该第二充电配置参数是在检测到充电电流小于预设的阈值时，所述电子装置发送给电源适配器的或电子装置响应电源适配器发送的获取第二充电配置参数的请求信息而发送给电源适配器的。
步骤406、根据所接收到的第二充电配置参数对第二充电电流进行配置并生成第二配置信息，以及根据所生成的第二配置信息控制将市电转化为第二充电电流并输出给电子装置。
如此，本发明所提供的充电控制方法使电源适配器在与电子装置握手通信成功后根据所接收到的第一、第二充电配置参数信息给电子装置提供合适的充电电流和/或充电电压。如此，以避免电子装置错误地引入过大的电流而损坏电子装置，从而提高电子装置的安全性。
在本发明的另一实施方式中，在步骤403之后还包括步骤404：
实时获取电源适配器输出给电子装置的充电电流，并判断该充电电流是否小于或等于预设电流阈值；若是，则进入步骤407；若否，则返回步骤403。
步骤407，控制将市电转化为第三电压值和第三电流值。
在另一实施方式中，当所检测到的充电电流是否小于或等于预设电流阈值时，电源适配器在控制将市电转化为第三电压值和第三电流值的同时，还向电子装置发送获取电子装置处于普通充电模式下的第二充电配置参数的请求信息。此外，电源适配器还控制第一开关断开。
在另一实施方式中，步骤404还可同时在步骤406之后执行。
请参见图7，所示为步骤403在一实施方式中的子流程图，包括：
步骤4031，根据所接收到的第一充电配置参数对第一充电电流进行配置生成第一配置信息，其中，该第一配置信息包括配置后的第一充电电流值。
在一实施方式中，步骤4031具体包括：
控制所述第一开关闭合，并获取所述第三电阻上的电压值；
根据所获取到的电压值计算所述电源适配器的输出电流，以及
根据所计算出的输出电流与所接收到的第一充电配置参数进行第一充电电流值的配置；所述输出电流的计算公式为:
Figure PCTCN2017115465-appb-000008
其中，I1为第一充电电流值，U1为第一开关闭合时第三电阻的电压值，R′R为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
步骤4032，将该第一配置信息发送给电子装置；
步骤4033，判断是否接收到所述电子装置发送回来的第一配置信息正确的第一确认信息；若是，则进入步骤4034；若否，则进入步骤405。
步骤4034，根据所生成的第一配置信息控制将市电转化为第一充电电流并输出给所述电子装置。
在另一实施方式中，步骤4034之后还包括步骤：
实时检测通过所述电源输出接口输出给电子装置的充电电流；
判断所检测到的充电电流是否小于或等于预设电流阈值；
若是，则进入步骤405。
如此，电源适配器200在对第一充电配置参数完成配置后，还将该配置信息发送给电子装置进行验证该配置信息是否正确，如正确，则控制输出第一充电电流给电子装置。如此，使电子装置获取到快充充电模式下的第一充电电流。
请参见图8，所示为一实施方式中的步骤406的子流程图。
步骤4061，根据所接收到的第二充电配置参数对第二充电电流进行配置并生成第二配置信息，该第二配置信息包括配置后的第二充电电流值。
在一实施方式中，步骤4061具体包括：
控制所述第一开关闭合，并获取所述第三电阻上的电压值；
根据所获取到的电压值计算所述电源适配器的输出电流，以及
根据所计算出的输出电流与所接收到的第二充电配置参数进行第二充电电流值的配置；
所述输出电流的计算公式为:
Figure PCTCN2017115465-appb-000009
其中，I1为第二充电电流值，U2为第一开关断开时第三电阻的电压值，R′R为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
步骤4062，将该第二配置信息发送给电子装置；
步骤4063，判断是否接收到所述电子装置发送回来的第二配置信息正确的第二确认信息；若是，则进入步骤4064；若否，则结束流程。
具体的，当该第二配置信息中的第二充电电流与第二充电配置参数中的第二充电电流一致时，电子装置100发送给第二确认信息给电源适配器200。
步骤4064，根据所生成的第二配置信息控制将市电转化为第二充电电流并输出给所述电子装置。
如此，当电子装置100进入普通充电模式时，会将该模式下的第二充电配置参数发送给电源适配器200。电源适配器200在对第二充电配置参数完成配置后将该配置信息发送给电子装置进行验证该配置信息是否正确。若正确，则控制输出第二充电电流给电子装置。如此，使电子装置可正确获取到普通充电模式下的第二充电电流。
采用上述充电控制方法，电源适配器可以在与电子装置握手通信成功后，接收电子装置发送的第一充电配置参数，并输出与第一充电配置参数对应的输出电流和输出电压；可以在与电子装置握手通信失败后，接收电子装置发送的第二充电配置参数，并输出与第二充电配置参数对应的输出电流和输出电压；从而可以根据电子装置发送的充电配置参数进行对应的电流和电压输出，以避免输出过大的电流或电压而损坏电子装置，从而提高电子装置的安全性。
本发明还提供一种充电控制系统，包括上述电源适配器200及与电源适配器200通过充电线缆连接的上述电子装置100。关于电源适配器200和电子装置100的介绍可参考前文描述，在此不再赘述
本发明还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述方法实施例所述的电子装置侧的充电控制方法。
本发明还提供一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述方法实施例所述的电源适配器侧的充电控制方法。
需要说明的是，对于前述的各个方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某一些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。本发明实施例电子装置和电源适配器中的模块可以根据实际需要进行合并、划分和删减，本发明实施例电子装置和电源适配器中的电路结构可以根据实际需要进行改进和优化。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：闪存盘、只读存储器(Read-Only Memory，ROM)、随机存取器(Random Access Memory，RAM)、磁盘或光盘等。
以上所述是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (20)

  1. 一种充电控制方法，应用于电子装置，所述电子装置通过充电线缆与电源适配器相连，所述电子装置包括处理器和充电电池，其特征在于，所述电子装置还包括充电模式切换开关，所述充电模式切换开关的第一端与所述电子装置的电源输入接口的电源引脚连接，所述充电模式切换开关的第二端与所述充电电池连接，所述充电模式切换开关的控制端与所述处理器连接；当所述充电模式切换开关闭合时，所述电子装置处于快充充电模式，对应于第一充电配置参数；当所述充电模式切换开关断开时，所述电子装置处于普通充电模式，对应于第二充电配置参数；第一充电配置参数包括第一充电电流，第二充电配置参数包括第二充电电流，所述第一充电电流大于所述第二充电电流，所述方法包括：
    在和所述电源适配器建立物理连接后，判断与所述电源适配器的握手通信是否成功；
    当与所述电源适配器握手通信成功时，控制所述充电模式切换开关闭合使所述电子装置处于所述快充充电模式；
    获取所述电子装置在所述快充充电模式下的第一充电配置参数，并将所获取到的第一充电配置参数发送给所述电源适配器；以及
    控制所述电源适配器根据所述第一充电配置参数输出第一充电电流。
  2. 如权利要求1所述的充电控制方法，其特征在于，在步骤控制所述电源适配器根据所述第一充电配置参数输出第一充电电流之前包括：
    接收所述电源适配器根据所接收到的第一充电配置参数对第一充电电流进行配置的第一配置信息，所述第一配置信息包括配置后的充电电流值；
    判断所述第一配置信息中所包括的充电电流值与所述第一充电配置参数中所包括的第一充电电流值是否相同。
  3. 如权利要求1所述的充电控制方法，其特征在于，在步骤控制所述电源适配器根据所述第一充电配置参数输出第一充电电流之前包括：
    判断是否接收到所述电源适配器发送回来的所述第一充电配置参数校验成功的确认信息。
  4. 如权利要求2或3所述的充电控制方法，其特征在于，若所述第一配置信息中所包括的充电电流值与所述第一充电配置参数中所包括的第一充电电流值相同，或接收到所述电源适配器发送回来的所述第一充电配置参数校验成功的确认信息，控制所述电源适配器闭合第一开关并输出所述第一充电电流；其中，所述第一开关的一端连接到所述电源适配器的电源输出接口的接地引脚，所述电源适配器的电源输出接口的电源输出引脚上串联有第一电阻和第二电阻，所述第一开关的另一端与所述第二电阻相连。
  5. 如权利要求4所述的充电控制方法，其特征在于，所述电源适配器还包括第三电阻，所述第三电阻的一端连接到所述电源适配器的电源输出接口的接地引脚，所述第三电阻的另一端与所述第二电阻并联后与所述第一电阻串联。
  6. 如权利要求4所述的控制方法，其特征在于，所述方法还包括：
    判断所述充电电池的充电电流是否小于或等于预设电流阈值。
  7. 如权利要求1或6所述的充电控制方法，其特征在于，所述方法还包括：
    若与所述电源适配器握手通信失败或所述充电电池的充电电流小于预设的阈值，控制所述充电模式切换开关断开使所述电子装置处于普通充电模式；
    获取所述电子装置在所述普通充电模式下的第二充电配置参数，并将所获取到的第二充电配置参数发送给所述电源适配器；以及
    控制所述电源适配器根据所述第二充电配置参数输出第二充电电流。
  8. 如权利要求1至3任意一项所述的充电控制方法，其特征在于，所述判断与所述电源适配器的握手通信是否成功，具体包括：
    向所述电源适配器发送握手请求信息，所述握手请求信息包括预设的标记信息；
    接收所述电源适配器在接收到所述握手请求信息后发送回来的握手确认信息，其中，所述握手确认信息中包括所接收到的标记信息；
    判断所述握手确认信息中所包括的标记信息与所发送出去的握手请求信息中的标记信息是否相一致；
    当一致时，判断与所述电源适配器握手通信成功；当不一致时，判断与所述电源适配器握手通信失败。
  9. 一种电子装置，通过充电线缆与电源适配器相连，包括处理器和充电电池，其特征在于，所述电子装置还包括充电模式切换开关，所述充电模式切换开关的第一端与所述电子装置的电源输入接口的电源引脚连接，所述充电模式切换开关的第二端与所述充电电池连接，所述充电模式切换开关的控制端与所述处理器连接；当所述充电模式切换开关闭合时，所述电子装置处于快充充电模式，对应于第一充电配置参数；当所述充电模式切换开关断开时，所述电子装置处于普通充电模式，对应于第二充电配置参数；所述第一充电配置参数所包括的第一充电电流大于所述第二充电配置参数所包括的第二充电电流；所述电子装置还包括存储有所述处理器可执行的计算机程序的存储器，所述计算机程序被所述处理器执行时实现如权利要求1至8任一项所述的充电控制方法。
  10. 一种充电控制方法，应用于电源适配器，所述电源适配器通过充电线缆给电子装置供电，其特征在于，所述电子装置包括充电模式切换开关，当所述充电模式切换开关闭合时，所述电子装置进入快充充电模式，当所述充电模式切换开关闭合时，所述电子装置进入普通充电模式；所述电源适配器包括电源输出接口、及控制器，所述电源输出接口包括电源输出引脚、第一数据引脚、第二数据引脚及接地引脚，所述第一数据引脚与所述第二数据引脚相断开且分别与所述控制器相连；所述方法包括：
    在与所述电子装置建立物理连接后，判断与所述电子装置的握手是否成功；
    在与所述电子装置握手成功时，发送第一控制指令给所述电子装置并控制所述电子装置响应所述第一控制指令闭合所述充电模式切换开关；
    接收所述电子装置在所述快充充电模式下的第一充电配置参数，所述第一充电配置参数包括第一充电电流；
    根据接收到的第一充电配置参数对第一充电电流进行配置并生成第一配置信息；以及
    根据所生成的第一配置信息控制将市电转化为所述第一充电电流并输出给所述电子装置。
  11. 如权利要求10所述的充电控制方法，其特征在于，在步骤生成第一配置信息之后包括：
    将所述第一配置信息发送给所述电子装置；
    判断是否接收到所述电子装置发送回来的确认所述第一配置信息正确的第一确认信息，所述第一确认信息表明所述第一配置信息中所包括的充电电流与所述第一充电电流相一致；
    若接收到所述第一确认信息，则根据所生成的第一配置信息控制将市电转化为所述第一充电电流并输出给所述电子装置。
  12. 如权利要求10或11所述的充电控制方法，其特征在于，所述电源适配器还包括分压模块，所述分压模块包括第一电阻、第二电阻、第三电阻和第一开关；所述第一电阻的第一端连接于所述电源输出引脚上，所述第一电阻的第二端通过所述第三电阻连接于所述接地引脚上，所述第一开关的第一端连接到所述接地引脚上，所述第一开关的第二端通过所述第二电阻连接到所述第一电阻的第二端上，所述第一开关的控制端与所述控制器电连接，步骤根据接收到的第一充电配置参数对第一充电电流进行配置具体包括：
    控制所述第一开关闭合，并获取所述第三电阻上的电压值；
    根据所获取到的电压值计算所述电源适配器的输出电流，以及
    根据所计算出的输出电流与所接收到的第一充电配置参数进行第一充电电流值的配置；所述输出电流的计算公式为:
    Figure PCTCN2017115465-appb-100001
    其中，I1为第一充电电流值，U1为第一开关闭合时第三电阻的电压值，R′’为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
  13. 如权利要求12所述的充电控制方法，其特征在于，所述方法还包括：
    实时检测通过所述电源输出接口输出给所述电子装置的充电电流；
    判断所检测到的充电电流是否小于或等于预设电流阈值；
    若是，发送充电模式切换指令给所述电子装置并控制所述电子装置响应所述充电模式切换指令进入普通充电模式。
  14. 如权利要求10所述的充电控制方法，其特征在于，所述方法还包括：
    在与所述电子装置握手失败时，发送第二控制指令给所述电子装置并控制所述电子装置响应所述第二控制指令断开所述充电模式切换开关；
    接收所述电子装置在所述普通充电模式下的第二充电配置参数，所述第二充电配置参数包括第二充电电流；
    根据所接收到的第二充电配置参数对第二充电电流进行配置并生成第二配置信息；以及根据所生成的第二配置信息控制将市电转化为所述第二充电电流并输入给电子装置。
  15. 如权利要求14所述的充电控制方法，其特征在于，所述根据所接收到的第二充电配置参数对第二充电电流进行配置具体包括：
    控制所述第一开关闭合，并获取所述第三电阻上的电压值；
    根据所获取到的电压值计算所述电源适配器的输出电流，以及
    根据所计算出的输出电流与所接收到的第二充电配置参数进行第二充电电流值的配置；
    所述输出电流的计算公式为:
    Figure PCTCN2017115465-appb-100002
    其中，I2为第二充电电流值，U2为第一开关断开时第三电阻的电压值，R′’为充电电路的等效电阻值，R1为第一电阻的阻值，R2为第二电阻的阻值，R3为第三电阻的阻值。
  16. 如权利要求15所述的充电控制方法，其特征在于，所述方法还包括：
    将所述第二配置信息发送给所述电子装置；
    判断是否接收到所述电子装置发送回来的确认所述第二配置信息正确的第二确认信息，所述第二确认信息表明所述第二配置信息中所包括的充电电流与所述第二充电电流相一致；
    若接收到所述第二确认信息，则根据所生成的第二配置信息控制将市电转化为所述第二充电电流输出给所述电子装置。
  17. 如权利要求10至16任意一项所述的充电控制方法，其特征在于，所述电源适配器还包括与所述控制器电连接的电源转化模块，所述电源转化模块在所述控制器的控制下将市电转化为所述第一充电电流或所述第二充电电流输出给所述电子装置。
  18. 如权利要求16所述的充电控制方法，其特征在于，所述方法还包括
    实时获取所述第三电阻上的电压值；
    根据所获取到的电压值控制所述电源转化模块将所述市电转化为特定的充电电压以使所述充电电流持续维持在所述第一充电电流或所述第二充电电流。
  19. 一种电源适配器，通过充电线缆给电子装置供电，包括电源输出接口，分压模块、以及控制器，所述分压模块包括第一电阻、第二电阻、第三电阻和第一开关，所述电源输出接口包括电源输出引脚、第一数据引脚、第二数据引脚及接地引脚，所述第一数据引脚与所述第二数据引脚相断开且分别与所述控制器相连，所述第一电阻的第一端连接于所述电源输出引脚上，所述第一电阻的第二端通过所述第三电阻连接于所述接地引脚上，所述第一开关的第一端连接到所述接地引脚上，所述第二开关的第二端通过所述第二电阻连接到所述第一电阻的第二端上，所述第一开关的控制端与所述控制器电连接；所述电源适配器还包括存储有所述控制器可执行的计算机程序的存储器，所述计算机程序被所述控制器执行时实现如权利要求10至18任意一项所述的充电控制方法。
  20. 一种充电控制系统，包括如权利要求19所述的电源适配器及如权利要求9所述的电子装置。
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