High-physicochemical-property electrolyte preparation device and preparation method

Abstract

The invention discloses a high-physicochemical-property electrolyte preparation device and preparation method. An exhaust pipe is arranged on the top surface of a tank body; the outlet of the exhaustpipe is connected to a sucking pump and a circulating pipe in parallel, the outlet of the circulating pipe is connected to the inlet of an inflation mechanism in parallel, a circulating pump and a one-way valve are sequentially installed at the outlet of the circulating pipe, and the one-way valve is used for preventing nitrogen in a nitrogen conveying pipe from entering the circulating pipe; thecirculating pump is used for driving nitrogen to circularly move; the sucking pump communicates to a liquid recovery mechanism, and the liquid recovery mechanism is used for recovering liquid in the gas; gas in the tank body is eliminated in a vacuumizing mode and a nitrogen filling mode, air in the tank body can be effectively removed, air residues are avoided, the product quality of the electrolyte is guaranteed, the physical and chemical properties of the electrolyte are improved, and even if a gap exists in the top surface of the tank body, the nitrogen for filling can be dispersed out ofthe gap, so that the gap is filled.

Description

technical field [0001] The invention belongs to the technical field of preparation of lithium ion electrolyte, in particular to a device and method for preparing electrolyte with high physical and chemical properties. Background technique [0002] Lithium battery electrolyte is the carrier of ion transmission in the battery; it is generally composed of lithium salt and organic solvent; the electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery, and it is the lithium ion battery that obtains high voltage, high specific energy, etc. Guarantee of advantages; the electrolyte is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials under certain conditions and in a certain proportion; [0003] Before the electrolyte is stirred and prepared, in order to ensure that the physical and chemical properties of the electrolyte do not change, it is necessary to...

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Problems solved by technology

[0004] The current way to remove air is to use an air pump to vacuum, but this method has the following problems. The speed of vacuuming to remove air is slow, and because there are many parts on the top of the tank, once there is a gap somewhere on the top, the outside air is stirring. It will still enter the tank during the process, affecting the quality of raw materials

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