Household electric vehicle frequency converter

Abstract

The invention discloses a household electric vehicle frequency converter, which comprises a bottom plate. The top end of the bottom plate is fixedly connected with a protective cover and a wiring harness box; by arranging the protective cover, the protective cover protects the heat dissipation shell at the top end of the bottom plate, external dust can be prevented from entering the protective cover to be accumulated on the surface of the heat dissipation shell, the motor and the fan blades are arranged, the motor drives the fan blades to rotate, then the fan blades blow out air in the protective cover, dust entering is further reduced, and heat radiated in the protective cover can be blown out, and normal heat radiation of thefrequency converter is further ensured. By arranging the wire harness box and the sealing cover, after the frequency converter is connected through the connecting wire harnesses, the redundant connecting wire harnesses are stored in the wire harness box through the through holes, and when the frequency converter jolts and vibrates, the end springs and the top pressure springs buffer vibration generated by the supporting plate in the horizontal direction and the vertical direction correspondingly, and then vibration borne by the heat dissipation shell is reduced.

Description

technical field [0001] The invention relates to the technical field of frequency converters, in particular to a frequency converter for household electric vehicles. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply; the frequency converter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking Unit, drive unit, detection unit, micro-processing unit, etc.; the inverter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving energy saving and speed regulation. In addition, the frequency converter also has many protection functions, such as overcurrent, overvoltage, overload protection, etc. [0003] Frequency ...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems existing in the prior art that dust is easy to accumulate, which further affects heat dissipation efficiency, lines are messy, easy to age, wear, and internal components are easy to loosen when the frequency converter is bumpy, and to provide a household electric vehicle frequency converter. The electric vehicle frequency converter has the effect of preventing dust accumulation, ensuring normal heat dissipation and conveniently storing the wire harness to reduce wear and reduce the vibration of the frequency converter when bumping

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