Lithium ion power battery SOC estimation method based on neural network optimization EKF
A neural network and power battery technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as lack of universality, and achieve the effect of high application value, simple structure, and elimination of SOC estimation errors.
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[0047] The technical solutions of the various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0048] The present invention provides a method for estimating the SOC of a lithium-ion power battery based on a neural network optimized EKF, and the specific implementation is as follows.
[0049] 1. Establish the Thevenin equivalent circuit model
[0050] The accurate estimation of SOC of electric vehicle power battery depends on an accurate and easy-to-implement battery model. Generally speaking, a good battery model should have the following two points: ① It can accurately de...
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