Battery Module Capacity Calculation for Recharge Decision Control
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Solution Overview
Problem
Current power stations do not determine the necessity of recharging battery modules, nor do they calculate the capacity increase post-recharge, leading to ineffective recharging operations due to inconsistent battery capacities.
Innovation Solution
A method and system for calculating the capacity of a battery module by selecting a reference battery, determining relative capacities of remaining batteries, and identifying the increasable capacity, followed by controlled recharging only when capacity can be increased.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power stations directly recharge battery modules without capacity calculation, then recharging operation is performed, but the recharging operation becomes ineffective and capacity does not increase
Solution Approach 1:
The patent applies preliminary action by calculating the increasable capacity of the battery module before performing the recharging operation. The system determines whether the battery module can actually increase its capacity through recharging by comparing the sum of individual battery capacities to the module capacity. This preliminary calculation prevents ineffective recharging operations and energy waste.
2Ease of operation
If power stations recharge battery modules without determining necessity, then recharging is performed frequently, but operation and maintenance efficiency decreases
Solution Approach 1:
The patent implements feedback by continuously monitoring battery parameters (charging voltage, discharging voltage, charging current, discharging current, charging time, discharging time) and using this data to calculate individual battery capacities and the module's increasable capacity. This feedback mechanism enables intelligent decision-making about when recharging is actually necessary, improving operation efficiency and reducing unnecessary maintenance time.
3Reliability
If power stations do not calculate battery module capacity post-recharge, then capacity increase is not verified, but recharging effectiveness cannot be confirmed
Solution Approach 1:
The patent replaces physical measurement methods with electrical parameter-based calculations. Instead of using complex physical capacity measurement equipment, the system calculates battery capacities by substituting electrical parameters (voltages, currents, times) into capacity calculation formulas. This substitution enables verification of capacity increase after recharging through straightforward electrical measurements and mathematical computation.
Data Source
AI summary
A method for capacity calculation of a battery module includes: acquire the historical charge and discharge parameters of each battery in the battery module, select a reference battery that meet preset charge and discharge conditions, and obtain remaining batteries in the battery module; obtain relative capacity of each remaining battery relative to the reference battery; determine batteries that meet the preset capacity conditions based on the relative capacities as target capacities; obtain increasable capacity of the battery module based on the target capacities. The calculation of the increasable capacity of the battery module is performed before the battery module is recharged, so that the operation and maintenance personnel can know whether the battery module needs to be recharged and whether the capacity of the battery module after recharging has increased, which optimizes recharge process, improves recharge efficiency, and improves operation and maintenance efficiency.