Wuxi Guanya Refrigeration Technology co., ltd

LNEYA electric car motor circulating cooling system lubricant description

Electric vehicle motor circulating cooling system is used in new energy vehicle battery testing. So the performance requirements are very high. Among them, the lubricating oil of the electric vehicle motor circulating cooling system has a certain role, specifically what is the role of the electric vehicle motor circulating cooling system?

The lubricating oil of the electric vehicle motor circulating cooling system can reduce friction and wear inside the bearing and prevent seizure. Prevent direct contact between the bearing ring, the rolling element and the cage in contact with each other, reduce the sequence rubbing, wear, prolong the fatigue life, and the rolling fatigue life of the bearing. In the operation, if the rolling contact surface is well lubricated, it will be extended. Ground, if the viscosity of the lubricating oil is low and the thickness of the lubricating oil film is small, it is shortened. For the cycle oil supply method, etc., the heat generated by the friction can be discharged by the oil, or the heat radiated from the outside, cooled, preventing the bearing from overheating and preventing the deterioration of the lubricating oil itself.

Electric vehicle motor circulating cooling system, bearing lubrication method, mainly grease lubrication and oil lubrication. In order to give full play to the bearing performance, it is necessary to first select a suitable lubrication method according to the working conditions and the purpose of use. If only the lubrication effect is considered, oil lubrication is dominant. However, grease lubrication simplifies the bearing's peripheral structure.

Electric vehicle motor circulating cooling system bearings commonly used greases are calcium-based grease, sodium-based grease, calcium-sodium-based grease, lithium-based grease, aluminum-based grease and molybdenum disulfide grease, the same kind of grease It will also vary greatly depending on the performance of the grades, so be careful when choosing. In principle, greases with different grades cannot be mixed, and mixing greases containing different types of thickeners can damage the grease structure.

When selecting the grease of the electric vehicle motor circulating cooling system according to the working temperature, the main index refers to the temperature at which the grease is heated by the specified container to the flowing state, the oxidation stability and the low temperature performance. The dropping point can generally be used to evaluate the high temperature performance, and the bearing actually The working temperature should be lower than the dropping point of 10-20 °C. Synthetic grease should be used at a temperature below the drop point of 20-30 °C. When selecting the grease according to the bearing load, the grease with a small penetration should be selected for the heavy load. When working under high pressure, in addition to the small penetration, it also has higher oil film strength and extreme pressure performance. When selecting grease according to environmental conditions, calcium-based grease is not easily soluble in water and is suitable for drying and low moisture environments.

In the operation of the electric motor motor circulating cooling system, there must be attention to the place where the battery test part is affected, and the fault should be solved as soon as possible.
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