Electric Accumulator Efficiency Determination via Reconstructed Cycles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for determining the efficiency of electric accumulators are restrictive, requiring complete discharge and recharge cycles, which are not applicable to accumulators that are never fully charged or discharged, and are difficult to apply to complex accumulators with multiple cells, limiting their management and lifespan.
Innovation Solution
A method that acquires measurements of current and state of charge over a measurement period, converts these into equivalent symmetrical reconstituted cycles, selects cycles based on predetermined amplitudes, and calculates an efficiency indicator by integrating quantities related to charging and discharging operations, allowing for efficient determination of accumulator efficiency without requiring complete discharge or recharge cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complete discharge and recharge cycles are performed to determine efficiency, then measurement accuracy is improved, but operational complexity and time consumption increase
Solution Approach 1:
The patent applies partial action by calculating efficiency from partial charge/discharge cycles rather than requiring complete cycles. The method processes available measurement data from any charge/discharge operations, even if they don't represent full capacity cycles, thereby reducing operational complexity while maintaining reasonable measurement accuracy through mathematical reconstruction of efficiency indicators.
2Measurement precision
If complete discharge and recharge cycles are performed to determine efficiency, then measurement accuracy is improved, but time consumption increases
Solution Approach 1:
The patent enables efficiency determination from partial charge/discharge operations that occur during normal battery usage, eliminating the need to wait for complete cycles. By processing available data from ongoing operations and using mathematical methods to calculate efficiency indicators, the system achieves measurements without the time penalty of forcing complete charge/discharge cycles.
3Measurement precision
If cell-level measurements are performed in complex batteries with multiple cells, then measurement precision is improved, but device complexity and difficulty of implementation increase
Solution Approach 1:
The patent creates a universal efficiency determination method that works across different battery configurations (single cell, multiple cells, series/parallel arrangements) without requiring configuration-specific implementations. The method processes aggregate current and voltage measurements from the battery system as a whole, using mathematical reconstruction to derive efficiency indicators that are applicable regardless of the internal cellular structure, thereby eliminating the need for cell-level measurement infrastructure.
4Measurement precision
If cell-level measurements are performed in complex batteries with multiple cells, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent provides an operationally simple universal method that handles all battery configurations through the same measurement and calculation approach. The system only requires standard current and voltage sensors already present in most battery management systems, eliminating the need for additional cell-level measurement equipment or complex operational procedures, thereby significantly improving ease of implementation.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A method for determining an indicator of the efficiency of an electric accumulator, comprising the following steps: - a) converting a set of charging and discharging operations into an equivalent set of symmetrical reconstructed cycles; - b) selecting at least one symmetrical reconstructed cycle; - c) for a predetermined physical quantity involving at least the current relative to the electric accumulator, and for at least one selected symmetrical reconstructed cycle: determining a first quantity of said predetermined physical quantity that is supplied to the electric accumulator during the charging operation, and determining a second quantity of said predetermined physical quantity that is supplied by the electric accumulator during the discharging operation; - d) determining the time integral of said first quantity and said second quantity;- e) determine an indicator of the efficiency of the electric accumulator by dividing the integral of the second quantity by the integral of the first quantity.;