Battery Slot Discharge Cycling for Accurate State-of-Health Tracking
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Solution Overview
Problem
Current methods for determining battery state of health (SoH) are inadequate for accurately assessing battery degradation and remaining capacity, particularly in applications like electric aircraft and vehicles, where precise health monitoring is crucial for optimal performance and extended battery life.
Innovation Solution
A system and method that involves initiating a discharge cycle on a battery while it is received in a slot, measuring discharge data, and using this data to determine the battery's state of health, along with optional charge cycle measurements, to assess SoH and predict life expectancy, incorporating hardware circuits and executable code for data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If battery state of health is monitored continuously with charge and discharge cycles, then measurement precision of battery degradation is improved, but device complexity increases
Solution Approach 1:
The battery monitoring system utilizes the battery's own charge and discharge cycles to generate measurement data, rather than requiring separate external testing equipment. The system performs self-diagnosis by measuring voltage, current, and temperature during normal operational cycles, eliminating the need for complex external testing apparatus while maintaining high measurement precision for state of health assessment
Solution Approach 2:
The system continuously measures battery parameters during charge and discharge cycles and uses this feedback data to dynamically calculate and update the state of health. The measured data feeds back into the monitoring algorithm, allowing real-time adjustment of battery management decisions without requiring complex manual intervention or external testing equipment
2Measurement precision
If battery is discharged in slot to measure discharge data, then state of health determination accuracy is improved, but loss of time occurs due to additional processing cycles
Solution Approach 1:
The system performs discharge measurements in the slot before the battery is installed in the device. By completing the discharge cycle and collecting measurement data in advance, the system prepares comprehensive state of health information ahead of time, eliminating the need for time-consuming measurements after battery installation and reducing overall processing time
Solution Approach 2:
The system combines the discharge measurement process with the existing battery charging and management operations in the slot. Rather than treating discharge measurement as a separate time-consuming step, it is integrated into the normal battery handling workflow, allowing simultaneous execution of charging, discharging, and measurement functions without adding significant time overhead
Data Source
AI summary
Examples of the present disclosure include a method. The method includes receiving a battery in a slot. The battery is removable from the slot to power a device separate from the slot. The method further includes initiating a discharge cycle of the battery while the battery is received by the slot and measuring, during the discharge cycle, discharge battery data for the battery. The method includes determining, based at least in part on the discharge battery data, a state of health of the battery.