Battery regulation method based on aging adjustment battery operating range

Abstract

The present invention provides a battery control method for adjusting the battery operating range based on aging, which includes the following steps: performing a multi-dimensional electrochemical impedance spectroscopy detection method to obtain a three-dimensional relationship diagram of Nyquist relative to a charging state; Using an equivalent circuit model to analyze the three-dimensional relationship diagram of the Nyquist relative to the state of charge to obtain at least one main aging factor; define a pressure index relational expression of a battery operating range, and then according to the pressure index relational expression defining a plurality of regulation reference points in the battery operation range; and performing a battery discharge regulation according to the plurality of regulation reference points.

Description

technical field [0001] The present invention mainly provides a battery control method related to age-adaptive operation window (Ageing-adaptive Operation Window, AOW). Background technique [0002] The discharge characteristics of the battery will change with long-term use, which is generally called the aging phenomenon of the battery; the aging phenomenon of the battery includes the decline of capacity and the reduction of efficiency. The traditional battery detection method must fully charge and discharge the battery to measure the actual capacity. Generally speaking, the detection time will be as long as 1 (1C) to 10 (0.1C) hours. For the user, it will take a long time to return the battery to the factory for repair, which is unacceptable. Therefore, in order to enhance the identification of the health state of the battery, use the battery under normal and safe operating parameters, thereby prolonging the service life and increasing the safety, the industry and the acad...

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned and current battery aging research technologies, there are still shortcomings in the implementation of detection.

For example, the current electrochemical impedance spectroscopy (EIS) detection is facing shortcomings in the implementation of the detection, the main reasons include (1) long detection time: it takes a lot of charge and discharge preparation to measure the EIS in each capacity state of the battery (2) The reproducibility of the detection is not good: because the measurement wiring needs to be reconnected, the measurement accuracy caused by the contact impedance will be compromised

Images