Abstract: The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO4), aluminum hydroxide (Al(OH)3), manganese oxide (MnO2), dicobalt trioxide (cobalt oxide, Co2O3), nickel hydroxide (Ni(OH)2), and lithium carbonate (Li2CO3).

Abstract: An elevating device for seat cushion of bicycle includes a cylinder having at least one level to expand or contract inside a frame tube of a bicycle frame, a stick for operating the cylinder, and a driving device for driving the stick. By the driving device, the stick below the seat cushion will press the cylinder so as to make an adjustment of the height of the seat cushion. Therefore, the elevating operation for seat cushion of bicycle is easy and convenient to adjust a proper height of the seat cushion for getting on/off the bicycle and also for comfortable riding.

Abstract: An elevating device for seat cushion of bicycle includes a cylinder having at least one level to expand or contract inside a frame tube of a bicycle frame, a stick for operating the cylinder, and a driving device for driving the stick. By the driving device, the stick below the seat cushion will press the cylinder so as to make an adjustment of the height of the seat cushion. Therefore, the elevating operation for seat cushion of bicycle is easy and convenient to adjust a proper height of the seat cushion for getting on/off the bicycle and also for comfortable riding.