Charging Current Setting Method and Charging Module
AssigneeAnpec Electronics Corporation
InventorChih-Heng Su
Life of this patent
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Abstract
A charging current setting method for a charging module includes detecting at least one voltage value of an input voltage signal in an input terminal of the charging module to calculate an input resistance; setting a lower limit voltage value according to the input resistance; controlling an input current to increase, so that the input voltage signal decreases in accordance with the increasing input current; controlling the input voltage signal to remain on the lower limit voltage value when the input voltage signal decreases to the lower limit voltage value, and recording a magnitude of the input current as an upper limit current value after the input current becomes stable; and determining a charging current value of the charging module according to the upper limit current value.
Claims12
A charging current setting method for a charging module, comprising:
- detecting at least one voltage value of an input voltage signal in an input terminal of the charging module to calculate an input resistance;
- setting a lower limit voltage value according to the input resistance;
- controlling an input current to increase, so that the input voltage signal decreases in accordance with the increasing input current;
- controlling the input voltage signal to remain on the lower limit voltage value when the input voltage signal decreases to the lower limit voltage value, and recording a magnitude of the input current as an upper limit current value after the input current becomes stable;
- and
- determining a charging current value of the charging module according to the upper limit current value.
A charging module, comprising:
- a charging device;
- a voltage detector, for detecting at least one voltage value of an input voltage signal in an input terminal of the charging module to calculate an input resistance;
- and
- a control module, coupled to the charging device and the voltage detector, for executing the following steps:
- setting a lower limit voltage value according to the input resistance;
- controlling an input current to increase, so that the input voltage signal decreases in accordance with the increasing input current;
- controlling the input voltage signal to remain on the lower limit voltage value when the input voltage signal decreases to the lower limit voltage value, and recording a magnitude of the input current as an upper limit current value after the input current becomes stable;
- and
- determining a charging current value of the charging module according to the upper limit current value;
- wherein the charging device performs charging via the charging current value.
Dependencies are inferred from the claim text.