A low-frequency electromagnetic shielding device for electromagnetic compatibility testing of new energy vehicles

Abstract

The invention discloses a low-frequency electromagnetic shielding device for electromagnetic compatibility testing of new energy vehicles. Buckle the screw barrel, the invention realizes the use of the electromagnetic shielding frame to cooperate with the coil shaft rotating column, and forms a left and right rotation structure of a C-shaped magnet frame with a coil column as the main axis of the coil lamination in the power distribution environment of the lithium-manganese battery. The electromagnetic rotary shields the magnetic field, and the ellipsoidal motion structure is compatible with the transmission of the cutting magnetic induction line. It is also matched with the arc-shaped alignment magnetic flux effect of the magnetic field of the two-pole capacitor plate. The movement of heat dissipation fins promotes the effect of heat dissipation and wind force, prevents the dissolution of manganese ions, effectively guarantees the working efficiency of lithium-manganese batteries, reduces the probability of interference, and makes the low-frequency electromagnetic shielding effect of new energy vehicle electromagnetic compatibility testing excellent, and the detection value is accurate. .

Description

Technical field[0001]The present invention is a low-frequency electromagnetic shielding device for new energy automotive electromagnetic compatibility tests, which belongs to new energy vehicles.Background technique[0002]The new energy vehicle is a low-carbon environmentally friendly home transportation, replacing the gasoline consumption of the drive, converted to environmentally-friendly lithium manganese batteries or other chemical cells, improve the battery life, and saves costs, and the car is driving, The magnetic field compatibility of the electromagnetically regulated is flexible, convenient and efficient, and the shortcomings of the current technology publicly optimization are:[0003]The lithium manganese battery of the new energy vehicle is low and the safety is better, but the cycle life is poor, and the battery cycle life of the high-temperature environment is poor in the case of continuous supply of electricity, and there will be a phenomenon of manganese ion dissolution...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a low-frequency electromagnetic shielding device for electromagnetic compatibility testing of new energy vehicles to solve the problem of low cost and good safety of lithium-manganese batteries for new energy vehicles, but the cycle life is not good. , and in the case of continuous power supply and heat generation of new energy vehicles, the cycle life of batteries in high temperature environments is even worse, and manganese ions will dissolve. The magnetic induction line is deformed, resulting in a sudden drop in compatibility, which has a large hysteresis loss for the magnet material of the shielding structure, so that when the low-frequency electromagnetic shielding works, in addition to shielding the static magnetism, it is also necessary to shield the changing electromagnetic field, resulting in low-frequency conductance The disorder of the rate, the problem of numerical deviation affecting the electromagnetic compatibility test of new energy vehicles

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