Composite electrolytic solution of lithium ion power battery and preparation method thereof

Abstract

The invention discloses a compound electrolyte of the lithium ion dynamic cell and the preparation method thereof, particularly a compound electrolyte prescription of the lithium ion dynamic cell withlarge power and long service life used for high power charging and discharging and the preparation method thereof. The compound electrolyte of the lithium ion dynamic cell is composed of the following components according to the mass fraction ratio. The preparation method can be realized by the following steps, pretreating, rectifying (or dehydrating, dealcholizing) the organic solvent, adding into the electrolyte preparation mixer according to the compounding ratio and the scheduled sequence of the technology after detecting to be qualified; then adding the refined lithium salt into the mixed according to the compounding ratio after detecting to be qualified; finally adding the additive into the mixed according to the compounding ratio and the scheduled sequence after the pretreating andthe detecting to be qualified. The materials are dissolved, mixed, reacted completely in the mixer to prepare the compound electrolyte, finally after detection, the accepted product is filled to weigh into the warehouse. The invention is a novel compound electrolyte with safe environmental protection high efficiency.

Description

technical field

[0001] The invention relates to a composite electrolyte of a lithium-ion power battery and a preparation method thereof, in particular to a formula of a composite electrolyte suitable for a high-power, long-life lithium-ion power battery capable of high-rate charging and discharging and a preparation method thereof. Background technique

[0002] Energy is the material basis for the survival and development of human society. For hundreds of years, the energy system based on fossil fuels such as coal, oil and natural gas has greatly promoted the prosperity, progress and development of human society. However, with the continuous development of global science, technology and economy, as well as the further improvement of human culture and living standards, numerous data show that the global human beings are facing two serious dilemmas on the way forward: one is that non-renewable fossil energy will gradually The second is the massive exploitation and use of fossi...

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