Abstract: Disclosed are a battery charging method, a battery charging device, and a battery charging apparatus. The battery charging method, comprising: determining a direct current resistance (DCR) curve of a rechargeable battery in response to a charging instruction for the rechargeable battery; obtaining a real-time impedance of the rechargeable battery, and determining an impedance interval in the DCR curve corresponding to the real-time impedance; and determining a current charging strategy for the rechargeable battery according to the impedance interval corresponding to the real-time impedance, and charging the rechargeable battery by using the current charging strategy.

Abstract: A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R1 and R2 are separately selected from the linear alkylene with 1-3 carbon atoms, R3 from the alkyl with 1-5 carbon atoms, and R4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.

Abstract: A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R1 and R2 are separately selected from the linear alkylene with 1-3 carbon atoms, R3 from the alkyl with 1-5 carbon atoms, and R4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.

Abstract: An apparatus for cutting wood, the apparatus comprising a housing element defining a work surface and an interior, a means for delivering wood to the work surface, a plurality of incising elements arranged in the work surface to incise the wood in a direction substantially parallel to the fibre of the wood, a plurality of slicing blades arranged in the work surface to slice incised wood, and an opening in the work surface opening into the interior of the housing element.