Charging Circuit Voltage Reduction Feedback Control
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Solution Overview
Problem
Conventional charging circuits either provide slow charging speeds with low voltage circuits or high costs due to thick charging lines with high voltage circuits, failing to balance charging efficiency and line thickness effectively.
Innovation Solution
A charging circuit comprising a control circuit and a voltage reduction circuit that processes input voltage to output higher currents while maintaining lower input currents, achieved through feedback signal-based control signals and cascaded voltage reduction sub-circuits, allowing for efficient battery charging with thinner charging lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a high voltage charging circuit is used to provide high charging current, then charging speed is improved, but charging line thickness increases resulting in higher cost
Solution Approach 1:
The patent changes the voltage parameter during charging by using a voltage reduction circuit to convert high voltage to low voltage, enabling the system to achieve high charging current (high productivity) while using thinner charging lines (lower cost) by operating at reduced voltage levels for the actual battery charging
2Ease of manufacture
If a low voltage charging circuit is used to provide low charging current, then charging line thickness is reduced, but charging speed becomes slow resulting in poor user experience
Solution Approach 1:
The patent uses a voltage reduction circuit to dynamically change the voltage parameter, allowing the system to provide high charging current (fast charging speed) while maintaining low voltage operation for the battery connection, thus achieving both fast charging and thin charging lines
3Productivity
If high charging current is provided to improve charging speed, then charging efficiency is improved, but charging line thickness must increase
Solution Approach 1:
The patent changes the voltage parameter by using a voltage reduction circuit that converts high voltage to low voltage, enabling high charging current (high charging efficiency) to be delivered through thinner charging lines by operating at reduced voltage levels
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances charging efficiency by increasing output current while reducing input current, thereby improving battery charging speed and minimizing charging line thickness and cost.
Implementation Method 1
The voltage reduction circuit is configured to obtain an input voltage and the control signal, perform voltage reduction processing on the input voltage based on the control signal and output an output voltage to a battery, wherein an output current corresponding to the output voltage is greater than an input current corresponding to the input voltage
Data Source
AI summary
The present disclosure discloses a charging circuit, a terminal and a charging method, and belongs to a field of electronic circuit technologies. The charging circuit includes: a control circuit and a voltage reduction circuit connected to the control circuit; wherein the control circuit is configured to obtain a feedback signal indicating a generation frequency of a control signal, generate the control signal based on the feedback signal, and send the control signal to the voltage reduction circuit; and the voltage reduction circuit is configured to obtain an input voltage and the control signal, perform voltage reduction processing on the input voltage based on the control signal and output an output voltage to a battery, wherein an output current corresponding to the output voltage is greater than an input current corresponding to the input voltage, and the output voltage is configured to determine the generation frequency.