A method for ascertaining an approximation and/or a prognosis for the true degradation state of a rechargeable battery is disclosed. The method includes: providing a time sequence of values of the degradation state ascertained using measuring technology for past points in time; providing a trained HMM, which indicates, as a function of the true degradation state, at which probability during the ascertainment using measuring technology which particular value of the degradation state is monitored, and at which probability the true degradation state is maintained for what length of time, and/or at which probability this true degradation state transitions to which worse degradation state in the next time step; from the monitored time sequence and the HMM, the most probable characteristic of the true degradation state in the past that is in agreement with the monitored time sequence is ascertained; the desired approximation and/or prognosis is evaluated based on the most probable characteristic.
本发明涉及一种用于求取可再充电的电池的真实的退化状态的近似和/或预测的方法,其具有下述步骤:•提供退化状态的对于在过去的时间点以测量技术求取的值的在预先给定的时间步长中被离散的时间序列;•提供经过训练的隐马尔科夫模型、HMM,其根据真实的退化状态指出:——在以测量技术求取的情况下,以哪种概率观察到退化状态的哪个值并且——以哪种概率多长时间地保持该真实的退化状态,并且/或者该真实的退化状态在下一时间步长中以哪种概率转移到哪个更差的退化状态中;•由所观察的时间序列和HMM求取所述真实的退化状态在过去的最可能的走势,所述走势与所观察的时间序列一致;•由最可能的走势分析所寻找的近似和/或预测。
COST-EFFECTIVE AND PRECISE DETERMINATION OF THE DEGRADATION OF A RECHARGEABLE BATTERY
可再充电的电池的退化状态的成本低廉且精确的求取
07.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
Diagnostic device for degradation of rechargeable Li-ion battery
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