Battery Usable Time Display for Multi-Device Load Management
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Solution Overview
Problem
In indoor power management systems with storage batteries supplying power to multiple electrical devices, estimating the usable time of the battery during independent operation is challenging due to fluctuating load conditions, leading to inaccurate predictions if operational states of devices are not considered.
Innovation Solution
A power information display device and method that acquire and display the remaining battery capacity and power consumption information of each device, calculating and showing the usable time when all devices are operating and when at least one device has stopped, allowing for accurate estimation based on device states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the storage battery supplies power to multiple electrical devices with fluctuating loads, then the system provides versatile power management capability, but the accuracy of usable time estimation deteriorates when operational states are not considered
Solution Approach 1:
The power management device acquires operational state information from multiple electrical devices and uses this feedback to dynamically calculate and update the usable time estimation of the storage battery. The system continuously monitors device states and adjusts the usable time prediction based on actual power consumption patterns, ensuring accurate estimation despite fluctuating loads.
Solution Approach 2:
The usable time estimation is made dynamic by incorporating real-time operational states of electrical devices. Instead of using a fixed estimation method, the system adapts the calculation based on current device states, allowing the usable time prediction to change dynamically as devices are turned on or off, thus maintaining accuracy under varying load conditions.
2Duration of action of moving object
If the storage battery capacity is increased to extend usable time, then the duration of independent operation is improved, but the device complexity and system cost increase
Solution Approach 1:
The power management device performs preliminary calculation of usable time based on the storage battery's remaining capacity and the power consumption characteristics of electrical devices. By predicting the usable time in advance and notifying users, the system enables informed decision-making about device operation without requiring physical expansion of battery capacity, thus extending effective usable time without increasing hardware complexity.
Solution Approach 2:
The power management device acts as an intermediary that mediates between the storage battery and multiple electrical devices. It calculates and provides usable time information based on battery capacity and device power consumption, enabling optimized power management and user awareness without requiring direct modification of the battery or devices, thus avoiding increased system complexity.
3Measurement precision
If real-time monitoring of all device operational states is implemented, then the accuracy of usable time estimation is improved, but the information processing load and system complexity increase
Solution Approach 1:
The power management device extracts only the necessary operational state information from electrical devices that is relevant to power consumption calculation. By selectively acquiring and processing only the essential data needed for usable time estimation, the system achieves accurate estimation without being burdened by unnecessary information processing, thus maintaining simplicity while improving precision.
Data Source
AI summary
A power information display device includes: a power information acquisition unit which acquires information relating to a remaining capacity of a storage battery, and information relating to power consumption of devices that use power of the storage battery; and a display unit which displays usable time of the storage battery when a plurality of devices are operating, and usable time when at least one of the plurality of devices has stopped.