A new energy automobile battery charging and discharging monitoring method and system

Abstract

The present application relates to the field of new energy automobile power battery monitoring technology, especially to a new energy automobile battery charge and discharge monitoring method and system. The method comprises the following steps: obtaining a charging start signal, recording the moment when the current pulse captured by the current sensor crosses the preset noise threshold as the global charging start time, synchronously collecting the voltage of each monitoring point in the battery pack, and generating an original response data set; extracting the static reference voltage of each monitoring point, matching the corresponding preset determination threshold according to the type of the monitoring point, determining the difference between the transition time when the voltage in the original response data set rises to the determination threshold and the global charging start time, and generating a current period characteristic time vector containing the single body characteristic response time and the spatial characteristic response time. The present application captures the response time stamp feature under transient excitation and establishes a multi-dimensional mapping logic, achieving the beneficial effects of early warning, accurate positioning and robust diagnosis of the battery pack connection state throughout the life cycle.

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