State estimating method for automobile start illumination type lead-acid storage battery

Abstract

The invention relates to a state estimating method for an automobile start illumination type lead-acid storage battery. The method comprises the following steps: 1) connecting the storage battery and a current / voltage / temperature detection device, and connecting the detection device and a storage battery state estimating device; 2) transmitting detected current / voltage / temperature data of the storage battery to a storage battery state estimating device by the detection device, and judging the working conditions of the storage battery according to the detected data and adopting different estimating methods by the state estimating device, 3) synthesizing charge states of the working conditions of the storage battery acquired in the step 2); 4) updating parameters in the storage battery charge state estimating method in the step 1) by using the deviation of the storage battery state synthesized in the step 3) and the storage battery state before synthesis and the error of each method, and calculating the healthy state of the storage battery; and 5) storing the parameters updated in the step 4) into the storage battery state estimating device for an iteration estimating process of the next period.

Description

technical field The invention relates to a method for estimating the state of a storage battery, in particular to a method for estimating the state of a lead-acid storage battery used for starting lighting for automobiles, and belongs to the technical field of automobile electronic control. Background technique With the development of automotive electronic and electrical technology, in order to meet the comfort and convenience requirements of passengers and drivers, modern cars, especially luxury cars, have introduced more and more high-power electrical appliances, such as electric heating seats. , Electric defrosting, high-power car audio, etc. As a result, lead-acid batteries for starting lighting in cars already require far more power than simple tasks like starting the engine and lighting. High-power electrical appliances make the power of the car's starting lighting battery easy to be consumed, and also accelerate the aging of the battery. Facing these problems, the a...

AI Technical Summary

Problems solved by technology

Patent: A method for estimating the remaining battery power based on the Kalman filter of combined sampling points (public number: CN101604005), although it can obtain a more accurate state of charge of the battery online, but its calculation is complicated and the implementation cost is high

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