Audio Reproduction Apparatus Battery Thermal Management
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Solution Overview
Problem
Audio signal reproduction apparatuses fail to consider both battery voltage and temperature, leading to potential battery degradation and reduced operation time due to heat generation during use.
Innovation Solution
An audio signal reproduction apparatus that includes a control unit using temperature and voltage information to adjust output settings, such as volume and Dynamic Range Compression (DRC) limits, to maintain battery health within specified temperature and voltage ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the audio amplifier operates continuously to extend operation time, then the battery voltage decreases, but the battery temperature increases causing degradation
Solution Approach 1:
The control unit continuously monitors battery temperature and voltage during operation, and dynamically adjusts the clip level based on real-time temperature feedback. When temperature exceeds a predetermined threshold, the system automatically reduces the clip level to decrease power consumption and allow battery cooling, thereby preventing thermal degradation while extending safe operation time.
Solution Approach 2:
The system changes the operational parameter (clip level) based on battery temperature conditions. By dynamically adjusting the clip level according to temperature and voltage thresholds, the system optimizes power consumption to balance operation time extension with temperature control, preventing battery degradation.
2Duration of action of moving object
If the clip level is decreased to reduce power consumption, then battery life is extended, but audio output quality deteriorates
Solution Approach 1:
The clip level is made dynamic rather than fixed, adjusting in real-time based on battery temperature and voltage conditions. The system maintains higher clip levels when battery conditions are good (preserving audio quality) and reduces clip levels only when necessary (when temperature or voltage thresholds are exceeded), thus balancing audio quality with battery life extension.
Solution Approach 2:
The system changes the clip level parameter adaptively based on battery state. By monitoring temperature and voltage and adjusting the clip level accordingly, the system maintains optimal audio output quality within safe battery operating parameters, only reducing quality when battery protection is required.
3Device complexity
If the audio apparatus operates without temperature monitoring, then device complexity is reduced, but battery degradation accelerates
Solution Approach 1:
The system incorporates temperature monitoring with feedback control, where the control unit receives temperature information from a sensor and automatically adjusts the clip level in response. This relatively simple feedback mechanism provides effective thermal management to prevent battery degradation without requiring complex control systems.
Data Source
AI summary
An audio signal reproduction apparatus includes a temperature detection unit detecting a temperature of a battery pack, a voltage detection unit detecting a voltage of the battery pack, and a control unit performing an output control on a basis of temperature information detected by the temperature detection unit and voltage information detected by the voltage detection unit.