New energy vehicle, and power supply method and power supply system for new energy vehicle

Abstract

The invention discloses a new energy vehicle, and a power supply method and a power supply system for the new energy vehicle. The power supply method includes setting a plurality of threshold intervals and assigning values for each threshold interval; acquiring electric quantity data of storage batteries, judging the threshold intervals where the electric quantity data are located and judging current electric quantity class according to the assigned values; controlling actual maximum output power of the storage batteries according to the current electric quantity class. The power supply system comprises a threshold interval value assigning module, an electric quantity class judging module and a power output control module. The new energy vehicle, the power supply method and the power supply system have the advantages that threshold intervals are set to classify power quantities, so that the maximum output power of the storage batteries can be controlled, power can be supplied by the storage batteries at different levels of output power under the conditions of the different electric quantities, excessively fast discharge due to excessively high output power can be prevented, and the service lives of the storage batteries can be advantageously prolonged; the values are assigned for the threshold intervals, the electric quantities are classified according to the assigned values, value assignment intervals can be adjusted, accordingly, the new energy vehicle, the power supply method and the power supply system can adapt to different types of storage batteries, and the power supply system does not need to be developed again when the storage batteries are replaced.

Description

technical field [0001] The invention relates to a power supply technology of a new energy vehicle, in particular to a new energy vehicle, a power supply method and a power supply system thereof. Background technique [0002] New energy vehicles are mainly hybrid vehicles and pure electric vehicles, which are mainly driven by electric energy, so batteries used to store electric energy are the key to providing power support for new energy vehicles. Because the storage capacity of the battery will attenuate during the discharge process, especially during the rapid discharge process, the battery is prone to accelerated aging and shortened service life. However, in order to ensure the support of the power system in the existing new energy vehicles, the battery is generally discharged under the condition of its maximum transmission power, which easily leads to accelerated aging of the battery and shortened service life. Contents of the invention [0003] The purpose of the pres...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a new energy vehicle and its power supply method and power supply system, and solve the technical problems of fast aging and short service life of batteries of new energy vehicles in the prior art

Images