Battery Charger Verification System for Safe Charging
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Solution Overview
Problem
Existing chargers for secondary batteries, such as lithium-ion batteries, cannot determine if an error has occurred in the battery pack based on the information received from the battery pack, leading to unsafe charging operations.
Innovation Solution
A charger system that includes a receiving unit for battery state information, a detection unit for charge state information, a determination unit to assess the normal state of the battery, and a control unit to manage charging based on the assessment, ensuring safe operation by comparing received and detected information to determine if the battery is in a normal state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charger only receives battery information from the battery pack without verification, then the charging operation can proceed simply, but the safety and reliability of charging cannot be ensured
Solution Approach 1:
The charger receives battery information from the battery pack and feeds it back to the determination unit for verification. The determination unit compares received information with detected charge state information, creating a feedback loop that enables safety verification without requiring complex additional hardware
Solution Approach 2:
The determination unit acts as an intermediary component that mediates between the information reception from the battery pack and the charging control. It verifies the authenticity of battery information before allowing charging to proceed, ensuring safety while maintaining system simplicity
2Reliability
If the charger verifies battery state information through comparison, then the safety of charging is improved, but the complexity of information processing increases
Solution Approach 1:
The determination unit continuously compares received battery information with independently detected charge state information, creating a verification feedback mechanism. This approach improves reliability through systematic verification without requiring complex external verification systems
Solution Approach 2:
The charger performs self-verification by using its own detection units to independently measure charge state information and compare it with information received from the battery pack. This self-service verification approach improves reliability without adding external verification equipment
Data Source
AI summary
A charger that charges a battery unit including a secondary battery, includes a receiving unit, a detection unit, a determination unit, and a control unit. The receiving unit receives, from the battery unit, battery state information indicating a state of the battery unit, if the secondary battery is being charged. The detection unit detects charge state information indicating the state of the battery unit, if the secondary battery is being charged. The determination unit determines, using the battery state information and the charge state information, whether the battery unit is in a normal state. The control unit controls charging of the secondary battery in the battery unit depending on whether the battery unit is in the normal state.