DC/DC converter

Abstract

A DC / DC converter features that its all devices are installed to one side of radiator plate in seal mode. The control box and electromagnetic conversion assembly are individually shielded by a secondary shielding structure. The shielding box of electromagnetic conversion assembly is filled by thermal conductive filler. Its advantages are light weight, small size, high anti-interference power, and high heat dissipating effect.

Description

1. Technical field [0001] The invention belongs to a DC / DC converter, in particular to a DC / DC converter used in electric vehicles 2. Technical background [0002] The DC / DC converter converts a fixed DC voltage into a variable DC voltage, or raises and lowers a DC voltage to another stable DC voltage. DC chopping can not only regulate and stabilize the voltage, but also effectively suppress the harmonic current on the grid side. It can be widely used in stepless speed change of trolleybuses, subway trains, and battery-powered motor vehicles, as well as the power supply step-down and voltage stabilization control of emerging electric vehicles, so that the above-mentioned controls can achieve stable acceleration and fast response performance. And at the same time receive the effect of saving electric energy. [0003] The traditional DC / DC converter structure generally adopts steel chassis or cabinets, which are large in size and heavy in weight. The components are layered a...

AI Technical Summary

Problems solved by technology

[0003] The traditional DC / DC converter structure generally adopts steel chassis or cabinets, which are large in size and heavy in weight. The components are layered and arranged in separate boxes, occupying a large space, the layout of components is scattered, the wiring is long, and the anti-interference ability is poor. , the radiator is mostly made of extruded aluminum profile, the processing cost is high, and the heat dissipation effect is not ideal

Most of the heat dissipation air ducts are built-in air ducts. The air ducts are located in the surface of the components. Affected by the unevenness and size of the components, the heat dissipation effect is poor. In addition, the surface of the components cannot be completely sealed, and the dust and water pollution are serious. , the cooling efficiency is not high

However, the electromagnetic conversion component components and control box are all open in the cabinet. The electromagnetic conversion component components are prone to overheating, external disturbance and noise, and the control box has poor anti-interference ability and low reliability.

The whole box and cabinet are generally installed on the bottom surface, with a high center of gravity and a single installation method

Moreover, the existing DC / DC converters are large in size, heavy in weight and low in efficiency, so they are not suitable for use in vehicles.

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