Method and device for realizing battery management of electric vehicles

Abstract

The present invention relates to the technical field of electric vehicles, in particular, to a method and device for realizing battery management of electric vehicles. The method includes: detecting the power of each battery cell in the current battery pack; when it is detected that the number of battery cells whose power in the current battery pack is lower than a preset power threshold is greater than or equal to a set value, sorting the battery cells in the current battery pack whose power is higher than the preset power threshold and the battery cells in the spare battery cells whose power is higher than the preset power threshold according to the level of power; In the sorted results, the battery cells in the top N items with the highest electric power form a new power supply battery pack for power supply, where the value of N is equal to the number of battery cells that make up the power supply battery pack. The battery management implementation method and device of the electric vehicle provided by the present invention can improve the power supply efficiency of the battery pack, and further meet the actual demand of battery monitoring in the electric vehicle.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, in particular, to a method and device for realizing battery management of electric vehicles. Background technique [0002] With the shortage of energy, rising oil prices and increasingly serious urban environmental pollution, electric energy has been paid more and more attention as a new energy to replace oil. In recent years, electric vehicles powered by batteries have attracted more and more attention from the market. However, because the battery life may be shortened or damaged under conditions such as heating, overcharge / overdischarge current, vibration, and extrusion, it is very important to monitor and manage the battery in electric vehicles. [0003] At present, the battery monitoring and management in electric vehicles is mainly to monitor the overcharge and overdischarge status of the battery, and the power supply system of electric vehicles includes a large number of ...

AI Technical Summary

Problems solved by technology

However, because the battery life may be shortened or damaged under conditions such as heating, overcharge / overdischarge current, vibration, and extrusion, it is very important to monitor and manage batteries in electric vehicles

[0003] At present, the battery monitoring and management in electric vehicles is mainly to monitor the overcharge and overdischarge status of the battery, and the power supply system of electric vehicles includes a large number of battery cells. Insufficient power of multiple battery cells will affect the power supply efficiency of the current power supply battery pack

[0004] It can be seen from this that the current battery monitoring management of electric vehicles only monitors the overcharge and overdischarge status of the power supply battery pack, which does not meet the actual needs of battery monitoring in electric vehicles

Images