Vehicle power supply circuit as well as semiconductor protection control system of electric apparatus electronic equipments

Abstract

The present invention provides a vehicle power supply circuit and a semiconductor protecting control system of electronic equipment. The core element semiconductor shutdown relay SBR is composed of a P-channel MOS field effect tube, a control circuit SD07 and the like. The SD07 is composed of two circuits (excessive pressure and overflowing control) which have similar structures. Two SBR cooperation periphery elements can respectively form an accumulator semiconductor control device SCCB and an accumulator reverse semiconductor protecting device SPBR which are respectively used for vehicle accumulator charging additionally (lifetime prolonging) control and accumulator reverse protection control. The SBR can replace the conventional vehicle used fuse, breaker and / or electric relay, and can form a vehicle semiconductor control terminal box SCJB when combined with the SPBR to realize the control functions of circuit overvoltage, overload, short circuit, accumulator reversion, accumulator overdischarging and the like. The invention is simple, reliable and practical. The invention is suitable for the recycled vehicle improvement and new vehicle designing, and also can generalized to other direct current discharging electric power supply system.

Description

Technical field [0001] The invention relates to a semiconductor protection control system for automotive power circuits and electrical and electronic equipment, which is suitable for protection and control of various power circuit systems that adopt direct current charging and discharging. Background technique [0002] Since Edison invented the fuse (or fuse Fuse) in the 1880s, there have been more and more types of fuses, and their applications in the power electronics and automotive industries have continued. [0003] Commonly used circuit protection components for automobiles are fuses and breakers, both of which rely on temperature control. The former is non-recoverable, and the latter uses bimetallic thermal expansion and contraction characteristics that can be reused. Fuses and circuit breakers have a certain protective effect on circuit short-circuits or overloads, but they can face various complicated situations that may be faced in car use, such as accidental reverse con...

AI Technical Summary

Problems solved by technology

[0008] The invention is mainly used for the protection and control of automobile power circuits and electrical and electronic equipment. Aiming at various complex problems that traditional protection and control devices cannot solve in the use of automobiles, the invention provides a system solution

Fuses are mainly used to protect circuit safety during short circuit or overload; most automotive fuses have basically no protection for electronic control components

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