On-vehicle power grid management system and method of use thereof

Abstract

The invention discloses an onboard power grid management system and a using method of the onboard power grid management system. The onboard power grid management system comprises an onboard power supply control unit, a battery, a battery monitoring and control unit, a generator, an engine, an engine control unit and an electric equipment unit, wherein the onboard power supply control unit is respectively connected with the battery, the battery monitoring and control unit, the engine control unit and the electric equipment unit through a control bus; the battery monitoring and control unit is respectively connected with the battery and the generator; the engine is respectively connected with the generator and the engine control unit; and the engine control unit is connected with the electric equipment unit. The onboard power grid management system disclosed by the invention can supply power to various kinds of electric equipment on vehicles, and can monitor the power consumption of the electric equipment in real time.

Description

technical field [0001] The invention belongs to the field of vehicle-mounted power grid management, in particular to a vehicle-mounted power grid management system and a method for using the same. Background technique [0002] The on-board electrical system of the motor vehicle supplies a plurality of electrical components. In this case, the electrical power is provided by the onboard electrical system battery and / or by the generator. In modern vehicles, an increasing number of electrical consumers are implemented as high-current consumers. This places special demands on the stability of the voltage in the vehicle electrical system, since the high current consumption reduces the voltage delivered by the battery and / or by the generator. [0003] The following defects exist in the existing on-vehicle power grid management system: [0004] 1. It is inaccurate to judge the battery status by monitoring the battery voltage value: [0005] The battery will slowly age over time....

AI Technical Summary

Problems solved by technology

[0004] 1. It is inaccurate to judge the battery status by monitoring the battery voltage value:

[0005] The battery will slowly age over time. If it is used improperly or ignited too frequently, the battery will age faster, and the internal resistance of the aged battery will increase. The result is that the voltage measured when the battery has lost power is still very High, the central electrical control unit will misjudge that the battery is still in a normal state, and continue to maintain the current power consumption management, resulting in a serious battery loss

[0006] 2. It is impossible to monitor the power consumption of each electrical equipment in real time and accurately:

[0008] 3. The power supply control is very strong, and it is impossible to achieve precise control:

[0009] A power supply control switch often controls the power supply of multiple electrical equipment. If the switch is turned off, it will cause multiple electrical equipment to be powered off.

[0010] 4. It is impossible to monitor the power loss on the power supply line and connectors in real time and accurately:

[0011] The power supply line will slowly age over time, the outer insulation layer may fall off, and it will cause a short circuit or leakage if it is connected to other conductors

The mechanical contacts of the connector will be oxidized or have poor contact after long-term use, resulting in increased resistance

These will cause the loss of electric energy and even the damage of equipment, and the spontaneous combustion of vehicles.

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