2results about How to "Avoid quadratic errors" patented technology

The invention discloses a quantitative analysis method for hydrogen peroxide in wooden cultural relics, and relates to the field of wooden cultural relic protection, analysis and detection. The method comprises the following steps: dividing a wooden cultural relic sample to be detected into a plurality of equally divided samples; differentiated pretreatment is carried out on different equally divided samples, so that the contribution of endogenous hydrogen peroxide and / or interfering substances in each sample to a final detection signal shows calculable difference; hydrogen peroxide is extracted from all the pretreated equally-divided samples, and corresponding extracting solutions are obtained; respectively measuring the apparent content of hydrogen peroxide in each extracting solution; and calculating the real content of the endogenous hydrogen peroxide in the wooden cultural relic sample based on the difference between the measured apparent contents. The quantitative analysis method for the hydrogen peroxide in the wooden cultural relics can effectively overcome complex matrix interference of the wooden cultural relics, is easy and convenient to operate and accurate in quantification, does not need complex pretreatment, and meets the cultural relic protection requirements.

This invention discloses a method, system, and storage medium for capacity compensation of lithium-ion battery cells. The method includes: constant current charging of the lithium-ion battery cell under test to a charging cutoff voltage, then switching to constant voltage charging until the charging current drops to the cutoff current; constant current discharge of the fully charged cell to a first cutoff voltage using a first discharge current, recording the released capacity as the main discharge capacity; after the main discharge, allowing the cell to rest for a preset time; continuing constant current discharge of the rested cell to a second cutoff voltage using a second discharge current, recording the released capacity as the reference discharge capacity; and calculating the compensated capacity using a capacity compensation formula based on the main discharge capacity, the reference discharge capacity, and a pre-determined reference discharge capacity benchmark value. This invention can eliminate the influence of polarization differences caused by ambient temperature fluctuations on the capacity test results during capacity testing, improving the accuracy of capacity testing.