Electric Tool Battery Monitoring During Storage
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Solution Overview
Problem
Existing battery technologies for electric tools cannot detect and record battery conditions such as temperature, voltage, and discharge current during non-use periods, limiting the ability to monitor environmental conditions and affecting battery lifespan.
Innovation Solution
A battery system with a microcomputer that periodically switches from a sleep mode to an active mode to detect and record battery conditions, using a peripheral circuit for data collection and storage, even when not connected to an electric tool, allowing for continuous monitoring and historical data accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the microcomputer stops power supply to peripheral circuits in sleep mode, then power consumption is reduced, but battery condition detection capability is lost
Solution Approach 1:
The microcomputer operates in periodic cycles, alternating between active mode where peripheral circuits are powered and sleep mode where they are powered down. This periodic activation allows the system to collect battery condition data at intervals while minimizing overall power consumption during storage periods.
Solution Approach 2:
The system performs battery condition detection before transitioning to sleep mode, ensuring that data is collected while the peripheral circuits are still operational. This preliminary action guarantees that essential monitoring data is captured even though the circuits will be powered down subsequently.
2Loss of energy
If the peripheral circuit is inactivated in sleep mode, then power consumption is saved, but environmental condition monitoring is prevented
Solution Approach 1:
The peripheral circuit is periodically reactivated at predetermined intervals during sleep mode to collect environmental condition data such as temperature and humidity. This periodic monitoring maintains reliability of environmental data collection while keeping the circuit inactive most of the time to save power.
Solution Approach 2:
The system continuously monitors battery conditions and environmental parameters, storing this data in memory. This feedback mechanism allows the system to maintain awareness of battery health and environmental conditions even during sleep mode, enabling informed decisions about battery maintenance and usage.
Data Source
AI summary
A battery for an electric tool includes at least one battery cell, a peripheral device operable to detect a battery condition of the at least one battery cell, and a microcomputer communicating with the peripheral device. The microcomputer periodically operates the peripheral device for detecting the battery condition during the time when the battery is not electrically connected to the electric tool.