Adaptive Power Conversion Circuit for Battery Charging Efficiency
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Solution Overview
Problem
Existing electronic devices face challenges in optimizing power transfer efficiency, particularly in converting voltages between batteries and loads, leading to suboptimal power management and reduced battery life.
Innovation Solution
An electronic device with a charging circuit, a first conversion circuit, and a second conversion circuit, controlled by a processor, which converts input voltages into charging or discharging voltages based on a determined conversion ratio to ensure efficient power supply to loads, optimizing the input-output voltage conversion ratio and power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a fixed voltage conversion ratio is used in the conversion circuit, then the circuit structure is simple, but the power transfer efficiency is reduced due to inability to adapt to different voltage conditions
Solution Approach 1:
The patent implements a dynamic voltage conversion ratio mechanism where the conversion ratio is adjusted in real-time based on the relationship between input voltage and battery voltage. The conversion circuit switches between different conversion ratios (e.g., 10:1, 5:1, 2:1) depending on the charging stage and voltage conditions, transforming a static fixed-ratio system into a dynamic adaptive system that optimizes power transfer efficiency across different operating conditions.
Solution Approach 2:
The patent changes the conversion ratio parameter based on voltage conditions. During constant current charging, a first conversion ratio is used; during constant voltage charging, a second conversion ratio is applied. This parameter adaptation allows the system to maintain optimal efficiency throughout the charging process by matching the conversion ratio to the specific voltage requirements at each stage.
2Loss of energy
If multiple conversion circuits with different conversion ratios are provided, then power transfer efficiency is improved, but the device complexity increases
Solution Approach 1:
Instead of providing multiple separate conversion circuits, the patent implements a single conversion circuit that dynamically adjusts its conversion ratio based on voltage conditions. This dynamic approach achieves the efficiency benefits of multiple fixed-ratio circuits while avoiding their complexity and space requirements.
Solution Approach 2:
The conversion circuit is designed to perform multiple functions by adapting its conversion ratio to different charging stages. It serves as both a constant current charging converter and a constant voltage charging converter, eliminating the need for separate dedicated circuits for each charging mode.
3Use of energy by moving object
If the conversion ratio is adjusted dynamically based on voltage conditions, then power efficiency is improved, but the control complexity increases
Solution Approach 1:
The patent employs a feedback mechanism where the controller continuously monitors the input voltage and battery voltage levels, then adjusts the conversion ratio accordingly. During constant current charging, one conversion ratio is applied; when the battery reaches constant voltage charging conditions, the controller switches to a different conversion ratio. This feedback-based control optimizes power efficiency while maintaining manageable control complexity through clear conditional logic.
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 power transfer efficiency by dynamically adjusting voltage conversion ratios based on battery and load requirements, improving power management and extending battery life by ensuring efficient power utilization.
Implementation Method 1
a charging circuit configured to, when an external power source is input, convert an input voltage of the external power source into a charging voltage for charging the battery
Implementation Method 2
a first conversion circuit configured to convert one of a discharging voltage and the charging voltage of the battery into a supply voltage according to a conversion ratio
Implementation Method 3
a second conversion circuit configured to convert the supply voltage and supply the converted supply voltage to a load
Data Source
AI summary
Disclosed are a power transfer method and an electronic device for executing the power transfer method. The electronic device includes a battery and a charging circuit which, when external power is input, converts an input voltage of the external power into a charge voltage for charging the battery. The electronic device also includes a first conversion circuit which converts one of the charge voltage and a discharge voltage of the battery into a supply voltage according to a conversion ratio and a second conversion circuit which converts the supply voltage and supplies the same to a load. The electronic device also includes a processor which controls the charge circuit and the first conversion circuit, enables the charge voltage to be input to the first conversion circuit when external power is input, and enables the discharge voltage to be input to the first conversion circuit when external power is not input.