Changsha University of Science and Technology

Zhiqiang Liu

Jie Wen

Chengjie Jiang

This invention discloses a method for predicting the service life of a retired power battery. The service life of a retired power battery may be predicted by its power battery life attenuation curve. The power battery life attenuation curve is obtained by establishing a power battery life model and a charge and discharge characteristic curve of the power battery by utilizing the temperature T, the discharge rate C and the discharge depth DOD in the charging and discharging process of the power battery. This invention establishes a three-dimensional relation graph with a cycle life with respect to the capacity loss rate and the functional relationship &#x3c9;=&#x192;(T,C) by using the power battery life attenuation curve. The three-dimensional relation graph is applied to the same type of battery. And the attenuation of the battery in the full life cycle may be predicted.

Method for predicting service life of retired power battery

The present invention is related to an intelligent and durable buried drainage pipe involving a method of separation and transmission. The intelligent and durable buried drainage pipe of the present invention includes an inner () and an outer () pipe. The outer pipe () is longer than the inner pipe (); a permanent magnet () is installed on a section of the outer pipe () that is longer than the inner pipe (). At least one electromagnet () is fixed at intervals from the permanent magnet (); the energized electromagnet () can attract the permanent magnet () causing it to slide. The end of the electromagnet () facing the permanent magnet () is provided with a distance sensor (), and the switch is turned on/off by the distance sensor (). An elastic telescopic member () is arranged between the permanent magnet () and the electromagnet ().

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Hunan, China

Zhiqiang Liu