Air draft type heat dissipation vehicle-mounted DCDC converter of new energy automobile

Abstract

The invention provides an air draft type heat dissipation vehicle-mounted DCDC converter of a new energy automobile. The converter comprises a DCDC circuit, a cooling fan, a motor, a baffle and a shell. The DCDC circuit comprises a transformer and a power heating device. A fan opening and at least one air hole are formed in the top of the shell. A plurality of radiating fins are arranged at the periphery of the fan opening. The cooling fan is fixedly mounted at the fan opening. At least one wire port and a plurality of slope type air inlets are formed in the side face of the shell. A motor groove and a baffle groove are formed in the inner side wall of the shell. The motor groove is used for containing a motor. The baffle groove is used for inserting a baffle. The motor comprises a gear, the baffle is provided with a rack, the gear is meshed with the rack, the bottom of the shell is provided with a base, one corner of the base is provided with a transformer groove, the transformer groove is used for containing a transformer, and heat dissipation walls are arranged on the two sides of the base and used for installing power heating devices. According to the invention, the heat dissipation performance can be improved, the service life can be prolonged, and the EMC performance can be improved.

Description

technical field [0001] The invention relates to the technical field of DCDC converters, in particular to an on-board DCDC converter for new energy vehicles with ventilation and heat dissipation. Background technique [0002] New energy vehicles have gradually become popular. The voltage of the large battery that supplies power to the DC motor in the new energy vehicle reaches more than 300 volts, while the voltage of the electrical appliances in the car is 12V, and the batteries used are all 12V low-voltage batteries, so the DCDC converter is among them. played a big role. The DCDC converter transmits the power of the high-voltage battery to the low-voltage battery, thereby powering the cigarette lighter, audio, navigator, reversing image and other equipment in the car. [0003] Because the DCDC converter is inside the car, the heating problem of the converter is very serious during the use of the car. The high voltage and high temperature of the converter will directly cau...

AI Technical Summary

Problems solved by technology

[0003] Because the DCDC converter is inside the car, the heating problem of the converter is very serious during the use of the car. The high voltage and high temperature of the converter will directly cause damage to the heating components to varying degrees, and even lead to direct breakdown of MOS, diodes, and batteries, thereby The service life of the converter is shortened or even directly damaged

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