基于卷积自编码神经网络的锂离子电池健康状况评估方法研究

HealthAssessmentMethodofLithiumIonBatteryBasedonConvolutionalSelf-EncodingNeuralnetwork

摘要:

目前锂离子电池已被广泛用作能量存储系统，在手机、电动汽车和飞机中均有广泛的应用。然而锂离子电池在使用过程中存在一定的危险性，若不能及时对电池健康状态评估（SOH）发现危险将会导致十分严重的后果。因此，研究一种基于卷积神经网络的锂离子电池健康状况评估方法，该方法通过使用卷积自编码神经网络对电池状态数据进行特征提取，有效提升了评估的准确率，并且神经网络能够在使用过程中不断进行学习，具有较高的灵活性，最后通过使用NASA公开的锂电池数据集测试，评估准确率达到93.6%，相比传统方法有较大提升。

Abstract:

At present, lithium-ion batteries have been widely used as energy storage systems, and they are widely used in mobile phones, electric vehicles and aircraft. However, there are certain dangers in the use of lithium ion batteries. If the battery health status (SOH) is not found in time, the danger will lead to very serious consequences. Therefore, a method for assessing the health of lithium-ion batteries based on a convolutional neural network is studied. This method uses a convolutional self-encoding neural network to extract the characteristics of the battery state data, effectively improving the accuracy of the evaluation, and the neural network can Continuous learning during the use process has high flexibility. Finally, by using the lithium battery data set published by NASA, the evaluation accuracy rate is 93.6%, which is greatly improved compared with the traditional method.