Oscillator Circuit for Battery Aging Status Determination
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Solution Overview
Problem
Existing methods for determining the aging status of battery cells in stationary and vehicle applications require complex laboratory equipment and high-power current sources, making them inefficient and costly for real-time monitoring.
Innovation Solution
A circuit arrangement using an oscillator circuit with inductive and capacitive components, excited by the battery itself, allows for energy-efficient determination of the aging status through time-dependent voltage changes, eliminating the need for additional energy supplies and enabling use across various frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-power current sources are used to determine internal resistance in validation environments, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The memory unit itself serves as the energy source by temporarily subjecting its own capacitive component to a charge, eliminating the need for external high-power current sources and complex laboratory equipment while maintaining measurement precision
Solution Approach 2:
The method changes the measurement approach by using temporary charge subjection of the capacitive component to excite the oscillator circuit, rather than using continuous high-power current sources, thereby simplifying the device while preserving measurement accuracy
2Reliability
If additional energy supply is provided for oscillator excitation, then excitation reliability is improved, but device complexity increases
Solution Approach 1:
The memory unit supplies electrical energy to the excitation device itself, making the system self-sufficient and eliminating the need for additional external energy supplies, thereby maintaining reliability while reducing complexity
3Measurement precision
If periodic excitation is used to stimulate the memory unit, then measurement accuracy is improved, but energy consumption increases
Solution Approach 1:
The method uses temporary charge subjection of the capacitive component to excite the oscillator circuit, which naturally produces periodic oscillations without requiring continuous periodic excitation, thereby reducing energy consumption while maintaining measurement precision
Solution Approach 2:
The oscillator circuit continues to oscillate naturally after temporary excitation, providing continuous measurement capability without requiring repeated energy input, thus reducing overall energy consumption
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables precise, energy-efficient determination of battery aging status, reducing costs and complexity while allowing for real-time monitoring of battery health across different frequencies.
Implementation Method 1
at least one inductive component and at least one capacitive component are disposed that with the memory unit form an oscillator circuit
Data Source
AI summary
The invention relates to a method for determining a characteristic status parameter of a memory unit via an electric circuit arrangement. In the circuit arrangement at least one inductive component and at least one capacitive component are arranged, forming a tuned circuit with the memory unit. The method has the following steps of energizing the tend circuit by temporary charging of the capacitive component, the energizing being carried out by an energizing device electrically supplied by the memory unit, and determining a time-dependent voltage change at the capacitive component after terminating the energizing and determining the characteristic status parameter from the time-dependence of the voltage change. The invention further relates to a corresponding electrical circuit arrangement and an electrical memory, including such a circuit arrangement.