Wireless Charging Control Module for Stable Battery Power
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Solution Overview
Problem
Existing contactless charging technologies face inefficiencies due to insufficient electric power supply from charging devices, leading to unstable battery charging, particularly when there is misalignment or compatibility issues between the power reception and transmission coils, resulting in repeated charging stoppages and prolonged charging times.
Innovation Solution
The electronic apparatus incorporates a charge processing module with a power reception coil, a DC voltage generation module, and a state determination module that adjusts the charging current based on the received DC voltage, ensuring continuous charging by reducing the current when the battery is not being charged stably, and restoring it when conditions improve, thereby stabilizing the charging process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contactless charging is performed with fixed charging current, then charging process is simple, but charging stability deteriorates when power supply is insufficient
Solution Approach 1:
The charging current is dynamically adjusted based on the detected charging state. The control unit monitors whether the battery is being charged and modifies the charging current accordingly - reducing it when charging stops and maintaining it when charging continues, thereby adapting to varying power supply conditions without requiring complex manual intervention
Solution Approach 2:
The system implements a feedback mechanism where the charging state is continuously detected and used to control the charging current. The control unit receives feedback about whether the battery is charging and adjusts the power transmission accordingly, creating a closed-loop control system that improves charging stability
2Reliability
If charging current is reduced to prevent stoppages, then charging stability improves, but charging speed decreases
Solution Approach 1:
The charging current is applied in a periodic manner - increased during periods when charging is stable and reduced when charging stoppages occur. This periodic adjustment allows the system to maximize charging speed during favorable conditions while preventing stoppages during unfavorable conditions, achieving both speed and stability
3Productivity
If high charging current is applied, then charging speed increases, but charging stability deteriorates with insufficient power supply
Solution Approach 1:
The charging current transitions from a fixed value to a dynamic parameter that adjusts based on real-time charging conditions. The control unit modulates the current level according to whether the battery is charging, allowing high current when stable and low current when unstable, thus resolving the contradiction between speed and stability
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 ensures stable and efficient battery charging by adapting to varying power supplies and improving compatibility, reducing repeated charging stoppages and shortening charging times, regardless of the type of charging device used.
Implementation Method 1
The power reception coil receives electric power supplied from a power transmission coil of the contactless charging device
Implementation Method 2
The generation module generates a DC voltage on the basis of the electric power received by the power reception coil
Data Source
AI summary
An electronic apparatus and a charging method are disclosed. An electronic apparatus comprises a battery, a charge processing module, a setting module, and a determination module. The charge processing module includes a power reception coil, a generation module, and a charging module. The generation module generates a DC voltage based on the electric power received by the power reception coil. The charging module charges the battery based on the DC voltage when the DC voltage supplied from the generation module is equal to or greater than a first threshold or is greater than the first threshold, and does not charge the battery when the DC voltage is equal to or smaller than a second threshold or is smaller than the second threshold. The setting module reduces a charging current when the determination module determines that the battery is not continuously charged after the charging module starts charging the battery.