Charging Control for Detachable Electronic Devices
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Solution Overview
Problem
Charging detachable electronic devices, such as laptops with separate display and body, is inefficient and poses safety risks due to the prolonged time required to charge both batteries, with existing methods failing to safely stop charging when a battery malfunctions.
Innovation Solution
An electronic device with a first device and a second device that can be detachably engaged, featuring a charging unit, voltage adjustment unit, power detection module, and control module to set charging time based on supply voltage and power consumption information, ensuring safe and efficient charging of both batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both batteries are charged simultaneously without time control, then both batteries will be fully charged, but charging time becomes excessively long (46 hours) and safety risks increase
Solution Approach 1:
The control module pre-calculates and sets the charging time limit based on battery capacity and charging power before charging begins. This preliminary action establishes a safety boundary that prevents overcharging while ensuring both batteries are charged within a reasonable timeframe, resolving the contradiction between charging safety and charging time.
Solution Approach 2:
The control module continuously monitors charging status and automatically stops charging when the predetermined time limit is reached or when battery full charge is detected. This feedback mechanism ensures safety without requiring excessively long charging times, as the system actively adjusts charging based on real-time conditions.
2Reliability
If a fixed safety timer is set to 48 hours for charging, then both batteries will be charged, but the method is dangerous when battery malfunctions occur and charging cannot be stopped
Solution Approach 1:
Instead of using a fixed static timer, the control module dynamically adjusts charging control based on multiple parameters including battery capacity, charging power, and real-time charging status. This dynamic approach provides adaptability to different charging scenarios and battery conditions, ensuring safety without requiring complex manual intervention.
Solution Approach 2:
The control module autonomously monitors battery status and automatically stops charging when safety conditions are met or malfunctions occur, without requiring external intervention. The system serves itself by implementing built-in safety mechanisms that detect and respond to abnormal conditions, simplifying the overall control complexity while maintaining high reliability.
Data Source
AI summary
An electronic device includes a first battery, a first charging unit, a first voltage adjustment unit, a power detection module, and a first control module. The first charging unit charges the first battery according to a supply voltage and a first charging enable signal. The first voltage adjustment unit outputs a first output voltage according to the supply voltage and a first battery voltage of the first battery. The power detection module generates a power consumption information according to the first output voltage. The first control module sets a charging time according to the supply voltage and the power consumption information, in which the first control module generates the first charging enable signal to control the first charging unit to charge the first battery according to the charging time.