Compact Charging Adapter Using Small Filter Capacitors
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Solution Overview
Problem
Existing adapters are bulky due to the large volume of electrolytic capacitors used for filtering, making them inconvenient to carry.
Innovation Solution
The use of filter capacitors with a capacitance smaller than a predetermined threshold, combined with a voltage transformation module, to reduce the adapter's volume by minimizing the size of the electrolytic capacitor and enhancing integration and modularization of circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large capacitance electrolytic capacitor is used for filtering rectified alternating current, then the filtering effect is improved, but the adapter volume increases
Solution Approach 1:
The patent changes the capacitance parameter of the filter capacitor from a large value to a small value (smaller than a predetermined threshold). This parameter change allows the adapter volume to be reduced while the voltage transformation module compensates to maintain the necessary filtering effect and output stability.
Solution Approach 2:
The patent replaces the traditional large electrolytic capacitor filtering mechanism with a voltage transformation module that processes pulsating direct current. This substitution enables the system to achieve the required output characteristics without relying on large capacitance components, thereby reducing adapter volume.
2Volume of stationary object
If the capacitance of filter capacitor is reduced, then the adapter volume is reduced, but the filtering capability may be compromised
Solution Approach 1:
The voltage transformation module acts as an intermediary between the small filter capacitor and the output. It processes the pulsating direct current from the small capacitor and transforms it into stable charging voltage and current, compensating for the reduced filtering capability of the small capacitor while maintaining output quality.
Solution Approach 2:
The patent changes the operating parameters of the voltage transformation module to optimize its performance with the small filter capacitor. By adjusting the transformation ratios and control parameters, the system achieves stable output despite using a capacitor with capacitance smaller than the traditional threshold.
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 approach achieves the miniaturization of the adapter while maintaining effective charging capabilities, with improved efficiency and reduced ripple effects.
Implementation Method 1
at least one filter capacitor having a capacitance smaller than a predetermined threshold and configured to filter a rectified alternating current to obtain a pulsating direct current
Implementation Method 2
a voltage transformation module configured to transform the pulsating direct current to obtain a voltage and a current for charging a device to be charged
Data Source
AI summary
Provided are an adapter and a charging method. The adapter includes: at least one filter capacitor (210) having a capacitance smaller than a predetermined threshold and configured to filter a rectified alternating current to obtain a pulsating direct current; and a voltage transformation module (220) configured to transform the pulsating direct current to obtain a voltage and a current for charging a device to be charged. The adapter for charging a battery is provided, the volume of the adapter can be reduced and the miniaturization of the volume of the adapter can be realized.