Internal and external pressure balancing mechanism for motor controller

Abstract

The invention discloses an internal and external pressure balancing mechanism for a motor controller. The internal and external pressure balancing mechanism comprises a base plate and a PCB (Printed Circuit Board), wherein the PCB is fixedly arranged on the base plate; a shell for packaging the PCB is arranged above the PCB; at least one set of ventilating parts composed of a plurality of vent holes are arranged on the shell; and ventilating film sets for covering the vent holes are arranged on the ventilating parts. The internal pressure and external pressure of the controller can be kept consistent under the condition of the change in internal and external environmental temperature of the controller. The damage to the products caused by the internal and external pressure difference can be eliminated.

Description

technical field [0001] The invention relates to an internal and external pressure balance mechanism of a motor controller, in particular to an internal and external pressure balance mechanism of a motor controller of an electric vehicle. Background technique [0002] Electric vehicles are driven by electricity and powered by electricity. With the strengthening of people's awareness of environmental protection, electric vehicles have become one of the important means of transportation for people's daily travel. As one of the three core components of electric vehicles, the reliability and safety of the electric vehicle controller play a vital role in the quality of the vehicle. [0003] At present, the interior of electric vehicle controllers is generally completely sealed and airtight, so that when the controller is working, the internal high-power electronic devices will generate a lot of heat, causing the air temperature inside the controller to rise rapidly, so that the in...

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Problems solved by technology

[0003] At present, the inside of the electric vehicle controller is generally completely sealed and airtight, so when the controller is working, the internal high-power electronic devices will generate a lot of heat, making the air temperature inside the controller rise rapidly, so that the inside of the controller When the air pressure increases to a certain extent, it may damage the product's shell or other components

In addition, when the vehicle drives from a low temperature to a high temperature environment or from a high temperature to a low temperature environment, the air pressure inside the airtight controller will also change. The change in the internal air pressure will cause the internal and external pressure to be unbalanced, which may damage the product shell. When it is pressed, it will easily cause water to enter the product, which will affect the safety of the vehicle.

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