Pure electric automobile energy system structure and vehicle energy storage control system thereof

Abstract

The invention discloses a pure electric automobile energy system structure and a vehicle energy storage control system thereof, wherein the energy system structure comprises a first charging plug and a second charging plug, wherein the first charging plug is connected with a first battery pack, while the second charging plug is connected with a second battery pack; and the first battery pack and the second battery pack are respectively composed of a plurality of batteries connected in series. The energy system structure is characterized in that each battery pack is controlled by controlling a power device with a one-way / two-way switch, so that battery packs discharge simultaneously, and the discharge processes of the battery packs are independent with one another without causing reverse charging; and the discharge of one or more battery packs can be realized by controlling the power device by using an entire vehicle electric control unit; and therefore, an individual battery of each battery pack are monitored. Furthermore, the pure electric automobile energy system structure maximally reduces the charging time, reduces the charging current, and prolongs the service life of an entire vehicle high voltage power consuming component and the service life of each battery pack; and the structure is capable of reducing the entire vehicle voltage so as to guarantee the electromagnetic compatibility of an entire vehicle; and as a result, the electric control technical level of the entire vehicle is greatly improved.

Description

technical field [0001] The invention relates to the field of electric vehicles, and relates to a pure electric vehicle energy system configuration and a vehicle energy storage control system thereof. Background technique [0002] At present, electric vehicles, especially pure electric vehicles, have become an important development direction of the world's automobiles. Pure electric vehicles have the advantages of low energy consumption, no emission and no pollution, but they have short driving range, large number of power batteries and relatively low volume and weight. Disadvantages such as large size, long charging time and low battery life have affected the development of electric vehicles. The existing energy system solutions for pure electric vehicles mainly include the following two methods: [0003] The first method: the power battery is first connected in parallel and then in series, that is, the battery cells are first connected in parallel (increasing its capacity)...

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Problems solved by technology

[0006] In the first method, the consistency and life of the battery pack are difficult to guarantee; there is mutual charge and discharge between the parallel-connected single batteries, and the failure of one single battery will cause the failure of other parallel-connected single batteries; the whole vehicle charging The current is large, which increases the difficulty of fast charging; although the second method reduces the current of the vehicle and protects the electrical components, the electromagnetic compatibility of the vehicle is poor, which affects the high voltage and driving safety of the vehicle.

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