Battery Cell Control System Voltage-Based Consumption Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery cell capacity adjustment systems face challenges in accurately calculating power consumption due to factors other than the presence or absence of photo-couplers, leading to potential inaccuracies in capacity adjustments.
Innovation Solution
A battery cell control system that estimates the consumption of a monitoring section connected to multiple battery cells based on the voltage of the battery cell, using a monitoring section and estimation section to accurately calculate and adjust the capacity of each cell, ensuring accurate power consumption estimation even when consumption varies with voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the difference in consumed current between current consumption devices is calculated based on the presence or absence of photo-couplers, then the capacity adjustment can be performed, but the calculation accuracy deteriorates due to other factors affecting current consumption
Solution Approach 1:
The patent changes the parameter used for consumption calculation from binary photo-coupler presence/absence to continuous voltage-based consumption estimation. By estimating consumption according to the voltage of the battery cell powering the monitoring section, the system achieves more accurate calculation that reflects actual power consumption variations.
2Reliability
If the monitoring section is operated with a battery cell as power source, then the system can monitor battery cell state, but the power consumption varies with voltage making accurate calculation difficult
Solution Approach 1:
The system uses voltage feedback from the battery cell to dynamically estimate the power consumption of the monitoring section. By continuously monitoring the voltage and using it to calculate consumption, the system adapts to voltage variations and maintains accurate consumption calculation throughout the battery's operating range.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In battery cell control system and method, a monitoring section connected to a battery cell included in an assembled battery, operated with the battery cell as a power source, and configured to monitor a state of the battery cell is provided and a first consumption of the battery cell which is consumed by the monitoring section in accordance with a voltage of the battery cell is estimated using the voltage of the battery cell.