BATTERY CHARGING APPARATUS AND BATTERY CHARGING PROTECTION CONTROL METHOD
First Claim
1. A battery charging apparatus, comprising a power adapter and a charging control circuit, wherein, charging control circuit is built in an electronic device and coupled to a controller and a battery in the electronic device, the power adapter is coupled to a communication interface of the electronic device via a communication interface thereof, the battery is charged by the power adapter via the communication interface of the electronic device, and the charging control circuit performs data communication with the power adapter via the communication interface of the electronic device;
- if a conventional charging or a quick charging is performed on the battery, the power adapter first determines whether an output voltage is greater than a voltage threshold and whether an output current is greater than a current threshold, if the output voltage is greater than the voltage threshold and/or the output current is greater than the current threshold, the power adapter sends a first charging stop command to the charging control circuit and automatically switches off direct current output, the charging control circuit drives the controller to switch off the communication interface of the electronic device according to the first charging stop command;
if the output voltage is not greater than the voltage threshold, and the output current is not greater than the current threshold, the power adapter feeds back output voltage information and output current information to the charging control circuit, if the charging control circuit determines that the output voltage of the power adapter is greater than the voltage threshold and/or the output current of the power adapter is greater than the current threshold according to the output voltage information and the output current information, the charging control circuit feeds back a second charging stop command to the power adapter and drives the controller to switch off the communication interface of the electronic device, and the power adapter switches off the direct current output according to the second charging stop command; and
if the charging control circuit determines that the output voltage of the power adapter is not greater than the voltage threshold and the output current of the power adapter is not greater than the current threshold according to the output voltage information and the output current information, the power adapter continues to determine the output voltage and the output current.
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Accused Products
Abstract
The present disclosure provides a battery charging apparatus and a battery charging protection control method. A power adapter in the battery charging apparatus carries performs data communication with a charging control circuit; when the power adapter determines that overvoltage and/or overcurrent occurs in the direct current output by a communication interface of the power adapter, the power adapter notifies the charging control circuit to drive a controller in the electronic device to switch off a communication interface of the electronic device and switches off the direct current output automatically; when the charging control circuit; determines that overvoltage and/or overcurrent occurs upon receiving output voltage and output current of the power adapter, the charging control circuit notifies the power adapter to switch off the direct current output and drives the controller in the electronic device to switch off the communication interface of the electronic device.
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Citations
20 Claims
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1. A battery charging apparatus, comprising a power adapter and a charging control circuit, wherein, charging control circuit is built in an electronic device and coupled to a controller and a battery in the electronic device, the power adapter is coupled to a communication interface of the electronic device via a communication interface thereof, the battery is charged by the power adapter via the communication interface of the electronic device, and the charging control circuit performs data communication with the power adapter via the communication interface of the electronic device;
if a conventional charging or a quick charging is performed on the battery, the power adapter first determines whether an output voltage is greater than a voltage threshold and whether an output current is greater than a current threshold, if the output voltage is greater than the voltage threshold and/or the output current is greater than the current threshold, the power adapter sends a first charging stop command to the charging control circuit and automatically switches off direct current output, the charging control circuit drives the controller to switch off the communication interface of the electronic device according to the first charging stop command;
if the output voltage is not greater than the voltage threshold, and the output current is not greater than the current threshold, the power adapter feeds back output voltage information and output current information to the charging control circuit, if the charging control circuit determines that the output voltage of the power adapter is greater than the voltage threshold and/or the output current of the power adapter is greater than the current threshold according to the output voltage information and the output current information, the charging control circuit feeds back a second charging stop command to the power adapter and drives the controller to switch off the communication interface of the electronic device, and the power adapter switches off the direct current output according to the second charging stop command; and
if the charging control circuit determines that the output voltage of the power adapter is not greater than the voltage threshold and the output current of the power adapter is not greater than the current threshold according to the output voltage information and the output current information, the power adapter continues to determine the output voltage and the output current.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 17)
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11. A battery charging protection control method, based on a battery charging apparatus comprising a power adapter and a charging control circuit, wherein the charging control circuit is coupled to a controller and a battery in the electronic device, the power adapter is coupled to a communication interface of the electronic device via a communication interface thereof the battery is charged by the power adapter via the communication interface of the electronic device the charging control circuit performs data communication with the power adapter via the communication interface of the electronic device, and the method comprises:
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if a conventional charging or a quick charging is performed on the battery in the electronic device, first determining by the power adapter whether an output voltage is greater than a voltage threshold and whether an output current is greater than a current threshold; if the power adapter determines that the output voltage is greater than the voltage threshold and/or the output current is greater than the current threshold, sending by the power adapter a first charging stop command to the charging control circuit, and switching off direct current output of the power adapter automatically; driving by the charging control circuit, the controller to switch off the communication interface of the electronic device according to the first charging stop command; if the power adapter determines that the output voltage is not greater than the voltage threshold and the output current is not greater than the current threshold feeding back by the power adapter, output voltage information and output current information to the charging control circuit; determining by the charging control circuit whether the output voltage of the power adapter is greater than the voltage threshold and whether the output current of the power adapter is greater than the current threshold according to the output voltage information and the output current information; if the charging control circuit determines that the output voltage of the power adapter is greater than the voltage threshold and/or the output current of the power adapter is greater than the current threshold, feeding back by the charging control circuit a second charging stop command to the power adapter, and driving the controller by the charging control circuit to switch off the communication interface of the electronic device; switching off the direct current output by the power adapter according to the second charging stop command; if the charging control circuit determines that the output voltage of the power adapter is not greater than the voltage threshold and the output current of the power adapter is not greater than the current threshold, continuing to determine by the power adapter whether an output voltage is greater than a voltage threshold and whether an output current is greater than a current threshold. - View Dependent Claims (12, 13, 14, 18, 19, 20)
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Specification