Over-discharged Battery Boot Charging Control
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Solution Overview
Problem
Mobile devices with over-discharged batteries face issues during booting due to insufficient charging current from USB chargers, leading to incomplete charging and booting failures, as the charging unit cannot determine the charger type until the booting process is completed.
Innovation Solution
A method and apparatus that initiate the charging process after booting, adjust power consumption and charging power by reducing processor clock speed and increasing charging voltage when a charger is detected, and return to basic values once the power adjustment is complete, ensuring stable booting and charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the charging unit performs charging process before booting process is completed, then charging can start earlier, but the charging unit cannot identify charger type leading to circuit faults
Solution Approach 1:
The charging process is started in advance during the booting process before the charging unit can identify the charger type. This preliminary action allows charging to begin earlier, improving productivity, while the system later adjusts charging power based on identified charger type to maintain reliability.
2Ease of operation
If USB charger is used for over-discharged battery, then charging process can be initiated, but insufficient current causes booting failure
Solution Approach 1:
The system dynamically adjusts charging power based on the booting status and charger type. During booting process, the charging unit provides higher current to ensure successful booting, then transitions to normal charging mode after booting completes, allowing USB chargers to work with over-discharged batteries without causing booting failures.
3Power
If TA charger current is used during booting, then sufficient power is provided, but circuit fault occurs with USB charger
Solution Approach 1:
The charging unit changes charging parameters (current and power) based on the identified charger type and booting status. During booting, higher current similar to TA charger is provided to ensure success, but after booting completes and charger type is identified, the system adjusts to appropriate USB charger current levels to prevent circuit faults.
Data Source
AI summary
A method and apparatus for charging a battery of a mobile device are provided. In the apparatus, a processor of the device starts a charging process when a connection of a charger is detected after a booting process of the device is initiated. The processor adjusts electric power by performing at least one of reducing consuming power of the device and raising charging power of the device. When a completion condition of a power adjustment is satisfied, the processor returns the electric power by performing at least one of returning the reduced consuming power to a basic consuming value and returning the raised charging power to a basic charging value.