Device for calculating state-of-health parameters of electric automobile battery and method thereof

Abstract

The embodiment of the invention discloses a device for calculating state-of-health parameters of an electric automobile battery and a method thereof. The device comprises a reduced discharge number calculation module which is used for calculating the reduced discharge number of the battery based on the total number of discharge of the battery within a preset period of time and the discharge type of each time of discharge; a reduced charge number calculation module which is used for calculating the reduced charge number of the battery based on the total number of charge of the battery within the preset period of time and the charge type of each time of charge; and an SOH parameter calculation module which is used for calculating the SOH parameters of the battery based on the reduced discharge number and the reduced charge number.

Description

technical field [0001] The present invention relates to the technical field of automobiles, and more particularly, to a device and method for calculating State-of-Health (SOH) parameters of electric vehicle batteries. Background technique [0002] Energy shortages, oil crises and environmental pollution are intensifying, which have a huge impact on people's lives and are directly related to the sustainable development of the country's economy and society. All countries in the world are actively developing new energy technologies. As a new energy vehicle with reduced oil consumption, low pollution, and low noise, electric vehicles are considered to be an important way to solve the energy crisis and environmental degradation. Hybrid vehicles take into account the advantages of pure electric vehicles and traditional internal combustion engine vehicles at the same time. On the premise of meeting the requirements of vehicle power and mileage, it effectively improves fuel economy...

AI Technical Summary

Problems solved by technology

However, the charging behavior and discharging behavior have large individual differences. If the charging type and discharging type are not distinguished, the accuracy of the calculated SOH parameters will not be high.

[0005] Moreover, as the battery is used for a long time, the battery capacity will decrease, and the remaining power (SOC) value calculated in the prior art cannot truly reflect the real remaining power of the battery.

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