Vehicle Charging Controller Adapting to Battery Voltage
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Solution Overview
Problem
Conventional vehicle USB charging apparatuses limit charging speed due to voltage and current restrictions, resulting in prolonged battery charging times and reduced battery life when used in vehicles with varying power sources.
Innovation Solution
A charging apparatus that includes a controller to monitor the vehicle battery's voltage state and switch between high-speed and general charging modes based on predetermined voltage levels, ensuring efficient charging by adjusting voltage and current according to the vehicle's battery capacity and the terminal's charging specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional voltage and current limitations are applied to USB charging apparatus, then battery safety is protected, but charging speed becomes slow and charging time increases
Solution Approach 1:
The charging apparatus dynamically adjusts voltage and current based on real-time battery state monitoring. The controller checks battery voltage state and automatically switches between high-speed charging mode (when voltage ≥ predetermined voltage) and general charging mode (when voltage < predetermined voltage), making the charging parameters adaptive rather than static.
Solution Approach 2:
The system changes charging parameters (voltage and current levels) based on battery state. It supports multiple charging modes with different voltage-current combinations: high-speed mode uses higher voltage and current, while general mode uses lower values, allowing the system to optimize between speed and safety by adjusting parameters according to battery conditions.
2Loss of time
If high-speed charging mode is used continuously, then charging time is reduced, but battery voltage drops and battery life is reduced
Solution Approach 1:
The controller periodically monitors battery voltage state during charging and switches between charging modes based on voltage thresholds. When voltage drops below the predetermined level during high-speed charging, the system automatically transitions to general charging mode or stops charging, creating a periodic cycle of high-speed and standard-speed charging that protects battery life while minimizing total charging time.
3Productivity
If voltage and current are increased for QC 2.0 high-speed charging, then charging efficiency improves, but risk of overload and temperature increase rises
Solution Approach 1:
The system implements feedback control by continuously monitoring battery voltage state and using this information to adjust charging parameters. The controller receives feedback about battery conditions and automatically adjusts the charging mode (high-speed or general) to maintain safe operating conditions while maximizing charging efficiency when conditions permit.
Data Source
AI summary
A charging apparatus is disclosed that charges a smartphone in a high-speed charging mode or in a general charging mode in consideration of a voltage state of a vehicle battery, or does not charge the smartphone, such that the charging apparatus effectively copes with unexpected situations capable of occurring in the vehicle. Therefore, when a voltage of a battery embedded in the vehicle reaches a constant voltage, the charging apparatus charges the smartphone in a manner that the in-vehicle battery voltage is protected, and no problem occurs in the vehicle when the vehicle starts engine ignition in the future. As a result, the charging apparatus efficiently charges the battery of the smartphone by adjusting the current and the voltage according to a voltage drop situation during a high-speed charging mode or a general charging mode, thereby efficiently charging the smartphone battery without causing overload to the battery.