Power system based on new energy vehicles

Abstract

The invention discloses a power system based on new energy vehicles, and the power system is suitable for improving dynamic efficiency of the new energy vehicles. The power system includes a vehicle controller, a first battery device and a second battery device, and the vehicle controller can receive a power demand signal; the first battery device and the second battery device are connected in parallel, the first battery device and the second battery device are separately connected with the vehicle controller, and the first battery device and the second battery device are both connected with amotor; the first battery device can separately output a drive current and a charging current according to the power demand signal and a residual electricity value of the second battery device, the drive current can drive the motor to rotate, and the charging current can charge the second battery device; and the second battery device can output a compensating current according to the power demandsignal, and the compensating current and the drive current are matched to drive the motor to operate. The power system based on the new energy vehicles has the advantages of high power output efficiency, steady power output and long battery service life.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a power system based on new energy vehicles. Background technique [0002] With the intensification of global environmental pollution and energy crisis, new energy vehicles have received extensive attention from all over the world in recent years, and have also achieved considerable development. In particular, hydrogen fuel cell electric vehicles, which are regarded as the "ultimate vehicle energy solution", have been attracting attention due to their advantages such as zero emissions, no pollution, and long cruising range. At the same time, in order to make up for the shortcomings of slow start-up response and weak output characteristics of hydrogen fuel cell electric vehicles, fuel cell vehicles are generally equipped with power-type or power-energy lithium batteries as auxiliary power sources. Electric vehicles with fuel cells and lithium batteries as the first an...

AI Technical Summary

Problems solved by technology

[0004] However, the fuel cell power passive control system in the prior art does not perform any control on the energy of the fuel cell and the lithium battery. Therefore, under the condition that the vehicle load power changes greatly, the performance of the fuel cell and the lithium battery will be degraded, and even the physical loss; while the conventional fuel cell power output control needs to be equipped with a lithium battery with greater transient power and capacity as energy supplement, which undoubtedly increases the cost of the vehicle and is not conducive to the structural space layout of the vehicle

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