Electric automobile hybrid energy storage charging system

Abstract

The invention discloses an electric automobile hybrid energy storage charging system which comprises a charging pile, a transformer, a rectifier, an assistant accumulator, a direct current (DC)/direct current (DC) convertor and a power battery. The rectifier, the assistant accumulator, the DC/ DC convertor and the power battery are arranged on a pure electric automobile. The charging pipe is connected with a primary side of the transformer. An input side of the DC/ DC convertor and a super-capacitor are connected on a secondary side of the transformer in a parallel mode. An output side of the DC/ DC convertor is connected with the power battery; the power battery is connected with a drive motor through a vehicle-mounted motor controller. The assistant accumulator is a titanium acid accumulator or a super capacitor. The electric automobile hybrid energy storage charging system provides a novel charging energy storage scheme for the pure electric automobile.

Description

technical field [0001] The invention relates to a hybrid energy storage and charging system for electric vehicles, and the invention is especially suitable for pure electric vehicles. Background technique [0002] Current problems with electric vehicles: [0003] (1) The power battery life is insufficient. [0004] There are currently two solutions. One is to load a large number of energy storage power batteries on the electric vehicle. Although this mode can increase the battery life to about 300km, it still cannot meet people's needs, and the battery is expensive. , and greatly increase the weight of the vehicle. Another way is to use the battery replacement mode. Due to the large structural differences of electric vehicles, the battery modules are difficult to standardize and cannot be popularized on a large scale. At the same time, due to the heavy weight of the battery, special battery replacement equipment is required, and frequent battery replacement is harmful to t...

AI Technical Summary

Problems solved by technology

[0003] (1) Insufficient power battery life

[0004] There are currently two solutions. One is to load a large number of energy storage power batteries on the electric vehicle. Although this mode can increase the battery life to about 300km, it still cannot meet people's needs, and the battery is expensive. , and greatly increase the weight of the vehicle

Another way is to use the battery replacement mode. Due to the large structural differences of electric vehicles, the battery modules are difficult to standardize and cannot be popularized on a large scale. At the same time, due to the heavy weight of the battery, special battery replacement equipment is required, and frequent battery replacement is harmful to the battery. The electrical and mechanical equipment interface of the battery pack brings a large number of hidden dangers to safety and reliability

[0005] (2) Battery life issues

[0006] The currently adopted charging mode of direct high-power fast charging of the vehicle power battery not only requires a charging system of hundreds of kilowatts, but also has a great impact on the life of the battery

In order to increase the cruising range, deep discharge and deep charge of the battery will affect the battery life

[0007] (3) Price issue

[0008] At present, if pure electric vehicles want to achieve a relatively ideal cruising range, they need to be loaded with a large-capacity power battery. Because the price of the power battery is relatively expensive, the cost of the whole vehicle is obviously high

[0009] (4) Insufficient charging infrastructure equipment

[0012] Due to the problems of related infrastructure construction, the current pure electric vehicles are still unable to achieve long-distance driving. Many people worry about what to do if our batteries are out of power. full

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