Dual-Path Power Supply Circuit for Efficient Voltage Switching
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Solution Overview
Problem
Existing power supply circuits have low conversion efficiency in voltage conversion, particularly when charging batteries and supplying power to load circuits, as they rely on DC/DC converters that are not optimized for efficient voltage regulation.
Innovation Solution
A power supply circuit that includes a DC/DC converter, a charging control circuit, and a switch circuit, allowing for mode switching between power supply from the DC/DC converter and the battery to the load circuit, enabling selection of the most efficient voltage conversion method based on the input voltage and load requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a DC/DC converter is used for voltage conversion to supply power to the load circuit, then voltage regulation precision is improved, but conversion efficiency deteriorates
Solution Approach 1:
The patent implements dynamic mode switching between first mode (DC/DC converter active) and second mode (charging control circuit active) based on real-time voltage conditions. When input voltage is within the predetermined range, the DC/DC converter operates for precise regulation; when voltage is outside the range, the charging control circuit takes over to maintain efficiency, thus dynamically adapting to different operating conditions to resolve the contradiction between precision and efficiency
Solution Approach 2:
The patent changes the operating parameters by switching between two different voltage conversion paths. The DC/DC converter is optimized for precise voltage regulation within a specific voltage range, while the charging control circuit is optimized for broader voltage ranges with better efficiency. By changing which circuit is active based on input voltage parameters, the system achieves both precision and efficiency under different conditions
2Measurement precision
If the DC/DC converter supplies power to the load circuit, then voltage regulation is precise, but the system cannot handle larger power requirements
Solution Approach 1:
The patent merges two power supply paths: the DC/DC converter path for precise voltage regulation and the charging control circuit path for high power delivery. The switch circuit combines these paths so that either or both can supply power to the load circuit depending on conditions, thus achieving both precise voltage regulation and high power supply capacity through combination of complementary circuits
Solution Approach 2:
The system dynamically switches between power supply modes. In the first mode, the DC/DC converter supplies power for precise regulation. In the second mode, the charging control circuit supplies power for higher power requirements. This dynamic switching enables the system to adapt to varying power demands while maintaining voltage precision through appropriate circuit selection
3Adaptability or versatility
If the charging control circuit converts voltage for battery charging, then battery charging is enabled, but conversion efficiency is lower than DC/DC converter
Solution Approach 1:
The system dynamically selects which circuit performs voltage conversion based on the operational context. When battery charging is required and input voltage is within the optimal range, the DC/DC converter performs the conversion with high efficiency. When input voltage is outside the optimal range or the load requires power, the charging control circuit handles the conversion. This dynamic selection minimizes energy loss while maintaining battery charging capability
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 configuration improves voltage conversion efficiency by allowing the circuit to choose between the DC/DC converter and the charging control circuit for power supply, ensuring stable and efficient power delivery to the load circuit, even during increased processing loads or when the input voltage is outside the optimal range.
Implementation Method 1
a DC/DC converter that converts electric power at a first DC voltage supplied from an external power supply to electric power at a second DC voltage
Implementation Method 2
a charging control circuit connected in parallel to the DC/DC converter with respect to the external power supply, the charging control circuit converting electric power at the first DC voltage to electric power at a third DC voltage
Data Source
AI summary
A power supply circuit that charges a battery and supplies electric power to a load circuit includes a DC/DC converter that converts electric power at a first DC voltage supplied from an external power supply to electric power at a second DC voltage and supplies electric power at the second DC voltage to the load circuit, a charging control circuit connected in parallel to the DC/DC converter with respect to the external power supply, the charging control circuit converting electric power at the first DC voltage to electric power at a third DC voltage and supplying electric power at the third DC voltage to the battery, and a switch circuit that switches between a first mode in which electric power is supplied from the DC/DC converter to the load circuit and a second mode in which electric power is supplied from the battery to the load circuit.