Long-life friction-reducing energy-saving lubricating grease for pure electric vehicle motor bearing and preparation method thereof

Abstract

The invention relates to long-life friction-reducing energy-saving lubricating grease for a pure electric vehicle motor bearing and a preparation method thereof. The long-life friction-reducing energy-saving lubricating grease comprises, by mass, 70-93% of base oil, 5-20% of a ternary composite thickener, 0.1-5% of an antioxidant agent, 0.1-5% of a rust and corrosion inhibitor and 1-5% of a structural stabilizer. The long-life friction-reducing energy-saving lubricating grease has good low-temperature use performances, a long service life and a low friction factor and saves electric energy. Under the same reserve of electricity, the lubricating grease increases the travelled distance of the pure electric vehicle, prolongs the service life of the pure electric vehicle motor bearing, reducesthe use and maintenance costs of the pure electric vehicle, has good high and low temperature performances and colloidal stability, does not produce three wastes and is safe and environmentally friendly.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to a long-life friction-reducing and energy-saving lubricating grease for motor bearings of pure electric vehicles and a preparation method thereof. Background technique [0002] Pure electric vehicles have become an inevitable trend in the development of the automobile industry. Since the "Eighth Five-Year Plan" in my country, many achievements have been made in electric cars, electric buses, electric vehicle system design and development, subsystem and component development, energy storage devices, demonstration operations, standard formulation and policy research. Statistics from the China Association of Automobile Manufacturers show that in 2015, my country sold a total of 331,100 electric vehicles, and it is expected that the sales volume will reach 700,000 in 2016, and the number of electric vehicles will reach 5 million by 2020. The main power of electric vehicles comes from the el...

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Problems solved by technology

[0003] However, in stark contrast to the research and development of pure electric vehicles, so far, there has not been any research report on special grease for electric vehicle motor bearings at home and abroad, let alone long-life energy-saving lubrication for electric vehicle motor bearings. Lipid Research Reports

At present, pure electric vehicle manufacturers mainly use ordinary bearing grease, and there is no specification for the use of grease, which leads to short life of motor bearings, high grease consumption, and high energy consumption.

In addition, the general-purpose lithium-based grease or extreme-pressure lithium-based grease currently commonly used is produced from mineral base oil, and the minimum operating temperature can only reach above -20°C, which cannot meet the requirements of the cold and severe cold areas in northern my country.

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