Seal protecting structure of output terminal of DCDC convertor

Abstract

The invention provides a seal protecting structure of an output terminal of a DCDC convertor, comprising a DCDC convertor and an output terminal, wherein the DCDC convertor is provided with an inner notch at the position where the output terminal is arranged, and an output terminal box is embedded in the inner notch; the output terminal box is a semi-closed box body formed by enclosing a base and three baffles, wherein one upper surface and the outer side of the semi-closed box body are opened; the base and the bottom of the inner notch on the DCDC convertor are fixed; the left side surface, the right side surface and the inner side surface of the inner notch are respectively shielded by the three baffles, and a through hole is arranged at the copper bar extending position which corresponds to the output terminal of the DCDC converter on each baffle; the output terminal extends into the output terminal box through the through hole and is connected with an external line cluster by a hold-down nut; an L-shaped bin cover is arranged above the inner notch of the DCDC convertor; and the open surfaces of the output terminal box are covered. The structure can protect and seal the output terminal by isolating the output part from the inside of the DC / DC system, thereby playing a role of electromagnetic shielding and reducing the space occupation.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a DC-DC converter technology for a hybrid electric vehicle. Background technique [0002] With the increasing shortage of energy, energy conservation and emission reduction has gradually become the new focus of people after dinner. As a major energy consumer, automobiles are closely related to people's livelihood, environment and development. The emergence of hybrid vehicles has provided a new development direction for energy saving of vehicles, and has gradually become the object of attention. [0003] Hybrid cars are different from ordinary cars. They need a DCDC converter that changes from a high-voltage battery to a low-voltage battery. This DCDC converter is characterized by a wide input range, large output current, and high power. The general output current is 100A~ Between 150A, there are special requirements for its output terminals, which must be able to achieve a cert...

AI Technical Summary

Problems solved by technology

[0004] At present, the output terminals of DCDC converters on some hybrid vehicles are connected by bolts, and the output terminals are directly extended to the external wiring of the DC / DC converter. This form has no effective protection for the terminals and is not strictly sealed. Electromagnetic, slag dust interference, affecting the use effect and service life

Moreover, the external wiring of the DC / DC converter takes up a large space, which is not conducive to saving the limited space of the car

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