Double power sources switching control system of electric car

Abstract

A double power sources switching control system of an electric car comprises a battery pack A, a battery pack B, a relay KM1, a relay KM2, a direct-current switch power source, a voltage sampling voltage, a voltage comparison device, a battery automobile switching circuit and an electric quantity display device. According to the double power sources switching control system of the electric car, the capacity of each of the two power sources is smaller than that of the large power source of the original electric car. Therefore, the weight of the finished automobile and the designed weight are basically kept unchanged, and the performance of the electric car does not change. When the double power sources switching control system of the electric car is used, one battery pack is used for supplying electricity, and the other battery pack is automatically switched to supply electricity when the currently used battery pack is used up. Accordingly, even though one battery pack goes wrong, the electric car does not drop the anchor outside. Furthermore, the double power sources switching control system of the electric car is provided with a manual switching device. Manual switching can be performed on the battery packs when the automobile switching circuit performs judgment mistakenly.

Description

technical field [0001] The invention relates to the field of vehicle engineering, in particular to a dual power conversion control system for an electric vehicle. Background technique [0002] With the advent of new energy electric vehicles, they are deeply loved by ordinary people because of their advantages of energy saving, environmental protection, simple control, convenient operation, and economic benefits, and gradually enter the families of ordinary people. However, because the development of the electric vehicle industry in my country is still in its infancy, and the battery, electronic control and motor technologies are still immature, resulting in large defects in the cruising range and charging time of electric vehicles, which brings inconvenience to consumers. The current electric vehicles are powered by a large battery, and the trams can only run short distances. If the battery capacity is increased, the mileage can be improved, but it will also bring many p...

AI Technical Summary

Problems solved by technology

However, because the development of the electric vehicle industry in my country is still in its infancy, and the battery, electronic control and motor technologies are still immature, resulting in large defects in the cruising range and charging time of electric vehicles, which brings inconvenience to consumers.

The current electric car uses a large battery for power supply, and the electric car can only run short distances. If the battery capacity is increased, the mileage can be improved, but it will also bring many problems

First of all, the weight of the vehicle will increase, and the chassis will be stressed, which will have a great impact on the strength of the low plate; the second is that the motor power is insufficient due to the increase in the weight of the vehicle, and it is difficult to carry people or climb hills; the third is tire wear Fast, heavy direction, difficult braking and other defects; Fourth, it will increase the cost of car purchase for consumers

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