Large-power DC controller possessing active and passive safety protection functions

Abstract

The present invention discloses a large-power DC controller possessing the active and passive safety protection functions. The large-power DC controller possessing the active and passive safety protection functions is composed of an isolation transformer (T1), resistors (R), capacitors (C), triodes (S), rectifier diodes (V), voltage-regulator tubes (D) and field effect transistors (Q). The beneficial effects of the present invention are that an active safety protection function enables the large-power DC controller not to be damaged easily, a passive safety protection function enables the large-power DC controller not to be afraid to be damaged, and the highest safety grade is realized, so that the large-power DC controller possessing the active and passive safety protection functions has the prominent advantages of strong environment adaptability, high work reliability, long service life, etc.

Description

technical field [0001] The invention relates to a power control component designed with full electronic circuit technology, which is used in the field of auxiliary starting of diesel engines (the field of automobile energy saving and environmental protection). Background technique [0002] In recent years, my country's automobile industry has greatly improved its technical level and assembly quality. In order to adapt to the development of the market, major vehicle manufacturers have continuously introduced high-tech, high-quality new models to meet the needs of vehicle technology progress. With the improvement of automobile performance, major automobile manufacturers have put forward higher requirements on the quality of parts and components. Some original parts, especially electrical devices, can no longer meet the requirements of new automobiles. It must be done. [0003] The automobile diesel engine auxiliary starting system plays an important role in the automobile star...

AI Technical Summary

Problems solved by technology

At present, the electromagnetic relay is widely used, which has the advantages of simple structure, convenient maintenance, and low cost, but it will generate contact arc sparks, and the contacts are easy to be damaged, especially in the case of high current, the contacts will be welded. poor sex

[0005] The change of the air intake heating method has greatly changed the load current of the preheating relay, and the load current has increased from 70A to 150A, which puts forward higher requirements for the reliable operation of the preheating relay under high power, while the electromagnetic relay Because the contacts are easily damaged, especially in the case of high current, the contacts will be welded, and it cannot work reliably under high-power loads.

Once the preheating relay fails, the air heater cannot be controlled, and the low-temperature start of the diesel engine cannot be realized, and it will also cause damage to other systems, and the safety is poor

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