Integrated Battery Interface for Hearing Aid Monitoring
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Solution Overview
Problem
Hearing instruments with rechargeable batteries face challenges such as short service life, sensitivity to temperature, and incorrect end-of-life (EOL) detection, particularly with lithium-ion batteries, which affect their performance and reliability, and require optimized monitoring and management to extend battery life and ensure reliable operation.
Innovation Solution
A hearing instrument system with a rechargeable battery system that includes an energy transfer interface and communication interface, allowing continuous monitoring and control of battery parameters, including state of charge, charging cycles, and error detection, enabling reliable EOL detection and optimized battery handling through integrated energy and communication connections, reducing the need for separate interfaces and enhancing battery management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rechargeable battery system with integrated energy and communication interfaces is used, then battery monitoring and management are improved, but device complexity increases
Solution Approach 1:
The patent combines the energy transfer interface and communication interface into a single integrated interface structure. This allows both power delivery and data communication to occur through the same physical connection points, reducing the number of separate components and simplifying the overall device architecture while maintaining reliable battery monitoring capabilities
Solution Approach 2:
The integrated interface serves multiple functions simultaneously - it transfers energy to charge the battery and communicates battery status information back to the hearing instrument. This multi-functionality eliminates the need for separate dedicated interfaces for power and communication, reducing complexity while improving monitoring reliability
2Adaptability or versatility
If separate energy transfer and communication interfaces are used, then interface functionality is improved, but device size increases
Solution Approach 1:
The patent merges separate energy transfer and communication interfaces into a single integrated interface, reducing the physical space required in the hearing instrument. This is particularly important given the small size constraints of hearing aids, allowing both functions to coexist without increasing overall device volume
3Ease of operation
If the battery door is opened for battery replacement, then battery accessibility is improved, but protection against moisture and dirt deteriorates
Solution Approach 1:
The system enables self-service battery management through automated monitoring and communication capabilities. The battery and charging system can communicate charge status and operational information without requiring the user to open the battery compartment, allowing the door to remain closed and protected while still providing full battery management functionality
Data Source
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AI summary
The pack (1) has a loading electronic unit for loading a rechargeable battery cell. A utilization signal electronic unit produces a utilization signal. Two utilization signal contacts (21) deliver the utilization signal. An enclosure guards against the ingress of moisture and contaminations. The utilization signal electronic unit transforms output voltage of the battery cell into predesignated utilizable voltage such that the utilizable voltage is made more available by the two utilization signal contacts outside of enclosure.