108results about How to "Less control points" patented technology

The invention relates to the technical field of sewage biochemical treatment, and provides an improved A2O biochemical reaction system and a sewage treatment method.The improved A2O biochemical reaction system comprises at least one anaerobic zone, at least one anoxic zone, at least one aerobic zone and at least one three-phase separator; the three-phase separator is arranged in the aerobic zone and is in sealed connection with the bottom of the aerobic zone, and the three-phase separator is suitable for dividing the aerobic zone into a first aerobic zone and a second aerobic zone. By adopting an integrated pool type structure, the occupied area is saved, the use of a high-efficiency reflux device is facilitated, the reflux energy consumption is reduced, and the nitrogen and phosphorus removal effect of the whole process can be obviously improved. The three-phase separator can automatically fall separated nitrified sludge back to the tail end of the second aerobic zone, the nitrified sludge flows back to the anoxic zone along with nitrified sludge mixed liquor, sludge backflow and internal backflow of the nitrified sludge mixed liquor can be combined into a whole, a set of backflow system is saved, a control point is reduced, operation is simpler, and operation, maintenance and management are convenient.

The invention relates to a preparation method of a lithium iron phosphate lithium ion battery for a large-capacity vehicle. The preparation method comprises the following steps of: (1) preparing a cathode pole piece of the battery; (2) manufacturing an electric core after drying, rolling, slitting, carrying out die-cutting on and carrying out lamination with an anode pole piece on the cathode pole piece; (3) mounting the dried electric core into a plastic shell, and packaging and carrying out leak detection, wherein a liquid injection hole is formed at the top end of the plastic shell, and a safe valve is mounted on the liquid injection hole; (4) vacuumizing the packaged and dried battery in a liquid injection manner, and placing; and (5) carrying out pre-charging, high-temperature aging and forming on the battery, so as to obtain a finished product battery. The preparation method provided by the invention has the advantages of simple process and low cost; the obtained lithium ion battery has the advantages of uniform temperature distribution, small battery inner resistance, no internal stress, good rate discharge, good battery security and the like; and the preparation method provided by the invention has good application prospect.

The invention relates to a fabrication method of a high-capacity lithium iron phosphate battery for an automobile. The method comprises the steps of (1) fabricating positive pole pieces of the battery, (2) conducting drying, rolling, slitting and die cutting on the positive pole pieces, and laminating the positive pole pieces with negative pole pieces to be fabricated into a battery cell, (3) drying the battery cell, loading the battery cell into a plastic housing, packaging and detecting leakage, (4) vacuumizing the packaged and dried battery, injecting liquid and placing the battery, and (5) conducting precharge, high temperature ageing and formation on the battery to obtain the finished battery, wherein liquid injection holes are formed at the top end of the plastic housing, and safety valves are mounted on the liquid injection holes. The method is simple in technology and low in cost, the obtained lithium ion battery has the advantages of uniform temperature distribution, small internal resistance, no internal stress, good rate discharge, good safety, and the like, and the method has a good application prospect.