Test device and method for wettability of lithium ion electrolyte and battery material

Abstract

The invention relates to a test device and method for the wettability of a lithium ion electrolyte and a battery material. The test device comprises a test bracket and a burette, wherein the burette can be fixed to the test bracket; a surface vessel for placing a test substrate is arranged under the burette; the burette is used for dripping the electrolyte to be tested into the test substrate; thetest bracket is also provided with an angle measurer and a scale needle, and the corresponding angle value of the scale needle can be read through the angle measurer when the scale needle points to the outermost periphery of the electrolyte. The device can quickly and directly present the wettability of the electrolyte, has a simple structure and is convenient to carry or move and high in measurement efficiency, measurement result accuracy and repeatability. In an electrolyte development or battery manufacturing process, an electrolyte formula or a battery pole piece rolling process can be rapidly optimized according to a determination result, the development cycle is shortened, and the development or manufacturing efficiency is improved.

Description

technical field [0001] The invention relates to lithium battery technology, in particular to a device and a method for testing the wettability of lithium ion electrolyte and battery materials. Background technique [0002] In recent years, the problem of environmental pollution has become increasingly prominent, and my country has also paid more and more attention to environmental protection issues. The formulation and implementation of policies such as carbon quotas and carbon credits have played a significant role in promoting energy conservation and emission reduction; policies such as carbon quotas and carbon credits have promoted the development of new energy. The overall process of industrialization of new energy has been accelerated, and the development of new energy vehicles has caused lithium-ion batteries to show geometric multiples of growth in recent years. [0003] In lithium-ion battery technology, due to the constraints of positive and negative electrode materi...

AI Technical Summary

Problems solved by technology

[0004] For the detection of the wettability of the electrolyte, in the technical scheme disclosed in the Chinese patent document with the publication number CN101009392A, the wettability of the electrolyte in the battery after the battery is disassembled and injected is observed by visual inspection. This method has many influencing factors and is likely to cause a large Error; Publication No. is that the Chinese patent document of CN102866084A discloses " a kind of method for measuring the wettability of battery material by electrolyte solution of lithium or lithium ion battery ", and positive electrode, negative electrode, separator of battery are made into the sheet sample with smooth surface as For the test substrate of the electrolyte to be tested, the half-angle method is used to observe the wettability of the electrolyte to the pole piece. This method has high requirements for equipment and is used in a harsh environment.

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