Power Control Unit for Hybrid Adapter-Battery Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Notebook computers with hybrid power systems face issues when a battery is not mounted or has low charge capacity, leading to excessive load on the adapter, potentially causing shutdowns and data loss due to overcurrent protection and decreased adaptor voltage.
Innovation Solution
An electronic apparatus with multiple operation modes that includes a power control unit to detect battery state and load conditions, preventing mode changes to high-power modes if the battery is not mounted or has low charge, and using a comparison circuit to manage power input and consumption based on predetermined current and voltage thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the hybrid power system is activated to simultaneously supply power from battery and adaptor, then the power supply capacity is improved, but the adaptor may be damaged due to excessive load
Solution Approach 1:
The power supply system dynamically adjusts its operation mode based on real-time detection of battery charge state. When battery charge is sufficient, the system operates in hybrid mode (both battery and adaptor). When battery charge is low, the system automatically switches to adaptor-only mode, preventing excessive load on the adaptor and avoiding damage.
Solution Approach 2:
The system continuously monitors the battery's charge state through a detection circuit and uses this feedback information to control the power supply mode. The control unit receives feedback about battery charge level and automatically adjusts whether to activate the hybrid power system, ensuring the adaptor is not overloaded when battery charge is insufficient.
2Power
If the hybrid power system is activated, then the power supply capacity is improved, but the system may shut down abnormally due to over current protection
Solution Approach 1:
The system performs preliminary detection of the battery's charge state before activating the hybrid power system. The detection circuit checks whether the battery charge is above a predetermined threshold level. Only when the charge state is sufficient does the system proceed to activate hybrid mode, preventing situations that would trigger over-current protection and abnormal shutdowns.
3Power
If the hybrid power system is activated, then the power supply capacity is improved, but data loss may occur due to abnormal shutdown
Solution Approach 1:
The system performs preliminary detection of battery charge state before switching to hybrid power mode. By checking whether battery charge exceeds a predetermined threshold, the system prevents activation of hybrid mode under insufficient charge conditions, thereby avoiding abnormal shutdowns and potential data loss during critical operations.
4Ease of operation
If the adaptor is used alone without battery support, then the device can operate, but the adaptor voltage decreases due to late latency for power input
Solution Approach 1:
The system dynamically adjusts power supply configuration based on battery charge state. When battery charge is sufficient, the system uses hybrid mode where the battery provides immediate power support, preventing voltage drops and late latency issues. The battery acts as a buffer, ensuring stable voltage supply while the adaptor charges the battery simultaneously.
Data Source
AI summary
An electronic apparatus includes an input unit to receive an input of DC power from an external adaptor, a battery unit to store the received DC power, a first control unit to drive the electronic apparatus using power of the battery unit or power received from the input unit in a first operation mode, and to drive the electronic apparatus using both the power of the battery unit and the power input from the input unit in a second operation mode, and a power control unit to prevent a mode of the electronic apparatus from being changed to the second operation mode according to a state of the battery unit.