Charging Control Circuit for Shorter CV Charging Time
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Solution Overview
Problem
The increasing battery capacity in electronic devices leads to longer charging times, which is inconvenient for users, as high Constant Voltage (CV) resistance prolongs the charging process, and accurately measuring battery cell voltage is difficult.
Innovation Solution
A control circuit that separates battery power from process power without an additional switch, reducing CV resistance by directly supplying process power to the terminal set when a test signal is applied, thereby minimizing the CV period and reducing overall charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery capacity is increased to extend usage time, then battery power consumption increases, but charging time also increases
Solution Approach 1:
The patent segments the power supply path by introducing a separation switch that divides the battery into two independent power sources: one for process power (testing/operation) and another for charging. This segmentation allows the charging current to flow directly to the battery without passing through the terminal set, thereby reducing charging time while maintaining extended battery capacity for usage.
2Adaptability or versatility
If additional switch is added to separate battery power from process power, then power separation is achieved, but device complexity increases
Solution Approach 1:
The patent makes the separation switch multi-functional by designing it to serve dual purposes: separating power during testing operations and managing charging current flow. This universal switch handles both process power isolation and charging control, eliminating the need for additional dedicated switches and reducing overall circuit complexity while maintaining power separation capability.
Data Source
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AI summary
A control circuit for reducing a charging time and a method thereof are provided. The charging device includes an input unit configured to receive a control signal indicating that applied power is process power, and a switch configured to cut off a path between a terminal set and a battery while the process power is applied, when the applied power is the process power.