Vehicle power supply auxiliary control method

Abstract

The invention relates to a device for assisting a vehicle power supply system, in particular to a vehicle power supply auxiliary device, which includes a main control unit, a voltage detection module, a basic voltage storage module, and a charge and discharge power supply unit connected in parallel with the battery. When the value is not less than the basic voltage value, the main control unit controls the vehicle power supply system to charge the charging and discharging power supply unit; when the real-time voltage value is less than the basic voltage value, the main control unit controls the charging and discharging power supply unit to discharge the vehicle power supply system. The invention also provides a vehicle power supply auxiliary control method based on the device. By adopting this technical solution, the performance of the vehicle power supply system is improved, the output voltage and current of the power supply are kept relatively constant, the instantaneous discharge capability of the power supply system is improved, the power output is increased, the service life of the battery is prolonged, the starting time of the vehicle engine is shortened, and the ignition efficiency and the vehicle's ignition efficiency are improved. Handling performance.

Description

technical field [0001] The invention relates to a device for assisting a vehicle power supply system, in particular to a vehicle power supply auxiliary device; the invention also provides a vehicle power supply auxiliary control method based on the device. Background technique [0002] The power supply system of the existing vehicle is mainly composed of an alternator, a rectifier bridge and a battery that supplies power to the vehicle. Due to the complexity of the vehicle operating conditions, the current and voltage of the DC power rectified by the vehicle generator are always in a fluctuating state. Especially when the instantaneous vehicle load changes greatly, the instantaneous drop of current and voltage is large. Due to the limitation of generator capacity and output characteristics, the existing vehicle power supply system cannot generate the required large current in a very short period of time. At this time, the required large current is mainly supplemented by the ...

AI Technical Summary

Problems solved by technology

[0002] The power supply system of the existing automobile is mainly composed of an alternator, a rectifier bridge and a battery that supplies power to the vehicle. Due to the complexity of the operating conditions of the automobile, the current and voltage of the direct current rectified by the automobile generator are always in a fluctuating state. Especially when the instantaneous vehicle load changes greatly, the instantaneous drop of current and voltage is relatively large

Due to the limitation of generator capacity and output characteristics, the existing vehicle power supply system cannot generate the required large current in a very short time. At this time, the required large current is mainly supplemented by the battery, but because the battery converts chemical energy into Electric energy takes a certain amount of time, and the internal resistance of the battery is high, so it cannot provide sufficient electric energy compensation for the vehicle instantly. The greater the load change of the vehicle, the longer the lag time, and then there will be insufficient power supply, which will reduce the working efficiency of the vehicle power unit , resulting in reduced engine combustion efficiency, vehicle power loss, reduced handling performance, and increased fuel consumption

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