Intelligent low-voltage power distribution system control device and its control system

Abstract

This application discloses an intelligent low-voltage power distribution system control device and its control system. The solution proposed by the invention solves the problem that the control method of the existing low-voltage power distribution technology for automobiles is not intelligent, and the protection devices such as fuses are damaged after performing protection tasks and need to be replaced. Key parameters such as current, voltage, temperature, energy loss, faulty devices, and fault types cannot be reported in a timely and effective manner, energy consumption cannot be effectively managed, and battery charging is not protected.

Description

technical field [0001] The present application relates to the technical field of automobile intelligent control, in particular to an intelligent low-voltage power distribution system control device and a control system thereof. Background technique [0002] The existing low-voltage power distribution system of automobiles uses traditional electromagnetic relays for logic control and traditional fuses for overcurrent protection. Each distribution line is independent of each other, and the same control signal needs to be given repeatedly on each distribution line. Using the central control unit for global management, important data such as loading voltage, output current, temperature information, and fault information cannot be reported to the entire vehicle. [0003] The traditional electromagnetic relay contacts used in the existing automotive low-voltage power distribution system have the problem of work loss, noise, sparks, and short lifespan that need to be replaced regul...

AI Technical Summary

Problems solved by technology

[0002] The existing low-voltage power distribution system of automobiles uses traditional electromagnetic relays for logic control and traditional fuses for overcurrent protection. Each distribution line is independent of each other, and the same control signal needs to be given repeatedly on each distribution line. Using the central control unit for global management, important data such as loading voltage, output current, temperature information, and fault information cannot be reported to the entire vehicle

[0003] The traditional electromagnetic relay contacts used in the existing automotive low-voltage power distribution system have the problem of work loss, noise, sparks, and short lifespan that need to be replaced regularly; traditional fuses follow Joule's law, and there are individual differences in the fusing time. Time and fusing current are greatly affected by factors such as structure and ambient temperature, and the fusing time and fusing current cannot be configured through software according to application needs. After fusing, it will be damaged and needs to be replaced

The above electromagnetic relays and fuses are unable to report their working status, fault status, loaded voltage value, current value and their own temperature to the whole vehicle.

These shortcomings are increasingly unable to meet the intelligent and data-based requirements of automobile control. Users cannot perform systematic diagnostic tasks on the low-voltage power distribution system of automobiles, and cannot locate and eliminate faults at the initial stage of faults. The risk of fire caused by overheating; users are also unable to conduct statistics and management of vehicle power consumption, and there is a lack of data support for the improvement of energy consumption in the later period

The replacement of different vehicle models needs to change the internal electrical connection of the low-voltage power distribution system to meet the requirements, the process is cumbersome, and the change introduces unknown risks

The charging current of the battery is not controlled, and charging with a high current will damage the battery and greatly shorten the service life of the battery

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