Multi-input Voltage Converter with Segmented Transformers
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Solution Overview
Problem
Traditional multi-input voltage converters often have optimal efficiency only at specific input and output voltage sets, with reduced efficiency for other inputs, and large circuit architectures when separate converters are used for each input voltage.
Innovation Solution
A multi-input voltage converter design combining a forward-type converter and a step-down converter with a common output circuit, utilizing multiple voltage receiving modules, transformers, and switches to achieve efficient conversion across various input voltages, simplifying the circuit structure and reducing size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transformer with multiple input voltage windings is used, then the circuit structure is simplified, but the conversion efficiency is optimal only at specific input voltage sets and lower for other inputs
Solution Approach 1:
The patent divides the single transformer into multiple independent transformers, each optimized for specific input voltage ranges. This segmentation allows each transformer to operate at optimal efficiency points for its designated voltage range, resolving the contradiction between simplified structure and maintained efficiency across different voltages.
Solution Approach 2:
The patent implements dynamic switching between different conversion circuits based on the detected input voltage. The control unit dynamically selects which circuit to activate, ensuring optimal efficiency for the current input voltage while maintaining a relatively simple overall structure through shared components.
2Loss of energy
If separate voltage converters are used for each input voltage, then optimal efficiency is achieved for each input voltage, but the circuit architecture becomes very large and difficult to reduce
Solution Approach 1:
The patent merges multiple conversion circuits by sharing common components such as the output circuit, control unit, and detection unit. This combining approach maintains optimal efficiency for each input voltage while significantly reducing the overall circuit architecture size compared to completely separate converters.
Solution Approach 2:
The patent designs universal components that can serve multiple functions across different conversion circuits. For example, the output circuit and control unit are designed to handle multiple input voltages, reducing the need for dedicated components for each voltage level and thereby reducing overall circuit size.
3Loss of energy
If separate voltage converters are used for each input voltage, then optimal efficiency is achieved for each input voltage, but the cost increases
Solution Approach 1:
The patent merges multiple conversion circuits by sharing common components such as the output circuit, control unit, and detection unit. This combining approach maintains optimal efficiency for each input voltage while significantly reducing the overall circuit architecture size compared to completely separate converters.
Solution Approach 2:
The patent designs universal components that can serve multiple functions across different conversion circuits. For example, the output circuit and control unit are designed to handle multiple input voltages, reducing the need for dedicated components for each voltage level and thereby reducing overall circuit size.
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
The solution enables efficient conversion of multiple input voltages with a simplified circuit architecture, reducing size and cost while maintaining optimal efficiency across different input voltage points.
Implementation Method 1
a first transformer, a primary side of the first transformer being electrically connected to the first voltage receiving module
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A multi-input voltage converter (1) includes an output circuit (13), a first conversion circuit (11), and a second conversion circuit (12). The first conversion circuit (11) includes a first voltage receiving module (111), a first transformer (112), a first switch (113). The second conversion circuit (12) includes a second voltage receiving module (121), a second switch (122). When the second voltage receiving module (121) receives the second input voltage (Vin2), the second switch (122) is turned on to operate, and the output circuit (13) outputs the output voltage (Vout).