Battery electric vehicle auxiliary electric box electrical framework

Abstract

The invention provides a battery electric vehicle auxiliary electric box electrical framework. The battery electric vehicle auxiliary electric box electrical framework is characterized in that parts of power battery systems, a motor controller, a power distribution unit, a driving motor, an auxiliary electric box and the like are included; the power distribution unit comprises a main positive relay, a pre-charging relay, a main negative relay, a charging positive relay and a charging negative relay; parts such as power batteries, the main positive relay, the pre-charging relay, the main negative relay, the motor controller and a motor constitute a main power supplying loop; parts such as the auxiliary electric box, the charging positive relay, the charging negative relay, the motor controller and the motor constitute an auxiliary power supplying loop; and the two power supplying loops both can independently drive a vehicle. By adopting the main battery system and the auxiliary batterysystem, the driving mileage of the battery electric vehicle can be increased, faults caused by breakdowns of the batteries can be quickly solved, the auxiliary electric box can be charged at midnightthrough the cheap 'valley electricity' of a power grid, the effect of stabilizing the peak and valley difference of the power grid is achieved, the auxiliary electric box is mounted and dismounted conveniently and rapidly, and the traveling experience of a user can be enhanced.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to an electrical structure of an auxiliary electric box of a pure electric vehicle. Background technique [0002] At present, the battery pack is the only source of power for pure electric vehicles, and its volume, quality, power, and energy density determine the performance, cruising range, and reliability of a pure electric vehicle. Now, if we want to enhance the performance of electric vehicles, we mainly make a fuss about energy density. However, the problem of materials cannot be solved in a short time, and now the structural design of automobiles is solidified, leaving limited space for battery packs. Most commercial vehicles Suspending the battery system on both sides of the vehicle longitudinal beam does not make full use of the chassis space, resulting in a certain waste of space, which is not conducive to improving the cruising range of pure electric vehicle...

AI Technical Summary

Problems solved by technology

Now, if we want to enhance the performance of electric vehicles, we mainly make a fuss about energy density. However, the problem of materials cannot be solved in a short time, and now the structural design of automobiles is solidified, leaving limited space for battery packs. Most commercial vehicles Suspending the battery system on both sides of the longitudinal beam of the car does not make full use of the chassis space, resulting in a certain waste of space, which is not conducive to improving the cruising range of pure electric vehicles

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