Charging Loop Protection Using Adapter Parameter Feedback
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Solution Overview
Problem
Existing charging systems lack the ability to detect and handle anomalies such as overvoltage and overcurrent in the charging loop, which can damage batteries and compromise safety during charging.
Innovation Solution
A terminal and power adapter system equipped with a communication unit, anomaly detection unit, and anomaly handling unit that form a charging loop with power and data wires, allowing for the detection of anomalies and control of the charging loop to enter a protection state by reducing voltage, current, or disconnecting the loop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charging current is enhanced for quick charging, then charging speed is improved, but battery safety deteriorates due to potential damage from overvoltage and overcurrent anomalies
Solution Approach 1:
The patent implements preliminary action by performing anomaly detection before charging damage can occur. The terminal device proactively monitors charging parameters (voltage, current, temperature) and sends protection indication information to the power adapter when anomalies are detected, enabling preventive action rather than reactive response. This allows quick charging to proceed at high speed while maintaining battery safety through advance anomaly detection and protection signaling.
Solution Approach 2:
The patent establishes a feedback mechanism where the terminal device continuously monitors charging parameters and communicates with the power adapter. When anomalies such as overvoltage, overcurrent, or abnormal temperature are detected, the terminal sends protection indication information back to the power adapter, which then adjusts charging parameters or stops charging. This closed-loop feedback system enables both quick charging and battery safety protection to coexist.
2Reliability
If charging parameter monitoring is implemented to detect anomalies, then battery safety is improved, but device complexity increases due to additional detection and communication components
Solution Approach 1:
The patent applies universality by making the terminal device perform multiple functions: it acts as both the charging control center and the anomaly detection device. The terminal's existing processing unit and communication interfaces are utilized to monitor charging parameters and communicate with the power adapter, rather than requiring completely separate dedicated detection hardware. This multi-functionality approach improves charging safety while minimizing the increase in device complexity.
Solution Approach 2:
The terminal device performs self-service by autonomously monitoring its own charging state and making protection decisions. The processing unit detects anomalies in charging parameters and automatically sends protection indication information to the power adapter without requiring external intervention or complex external monitoring systems. This self-service capability improves charging safety while keeping the system relatively simple.
Data Source
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AI summary
A terminal, a power adapter, and a method for processing a charging exception. The terminal (10) comprises a battery (11) and a charging interface (12). The terminal (10) forms a charging loop with the power adapter (20) through the charging interface (12), so as to charge the battery (11). The terminal (10) also comprises a communications unit (13), an exception detection unit (14), and an exception processing unit (15). The communications unit (13) receives charging parameter information from the power adapter (20). The exception detection unit (14) determines whether an exception occurs on the charging loop according to the charging parameter information. When the exception occurs on the charging loop, the exception processing unit (15) controls the charging loop to enter into a protection state. The terminal receives charging parameter information from the power adapter, determines whether an exception occurs on the charging loop according to the charging parameter information, and when the exception occurs on the charging loop, controls the charging loop to enter into a protection state, thereby improving the security of a charging process.