PORTABLE BATTERY-PACK NON-DESTRUCTIVE TEST DEVICE USING AC IMPEDANCE MEASURMENT TECHNOLOGY AND METHOD WHICH IT USE, MULTI-CHANNEL MEASURMENT SYSTEM WITH THIS DEVICE

摘要

The present invention is to shorten the time required to measure the characteristics of the battery, improve the reliability of the measurement result, the analysis of the measurement error as possible, and the configuration of the measuring system simple and to allow for multi-channel and a size reduction of the measuring equipment and so by measuring the DC signal from the process of obtaining the AC impedance spectrum perform a numerical processing structure of the actual measuring device is here based on the DC system can easily be combined with existing DC charge and discharge test device, the characteristics of the storage battery factor If the refinement of some helpful information, such as data for the surface reaction resistance and diffusion coefficient, the electrolyte average resistance and conductivity distribution resistance critical behavior of the dynamic characteristic parameter, such as the particles of the dynamic (kinetic) properties of the constituent materials, and , the result is determined for the like as well as the mixed structure of the material temperature properties of the battery, deterioration properties, reaction stability Since provide information, battery cell detects an error on its own circuit to possible failure or without identification of the cell itself, and the portable battery pack using the AC impedance measurement technique to be useful in the design phase of the actual battery is equipped with a non-destructive evaluation apparatus and method, the apparatus relates to a channel measurement system.