How to evaluate lithium-ion battery pack consistency?

Consistency evaluation features can be extracted online. An improved fuzzy clustering algorithm is developed to evaluate pack consistency. The proposed methods are validated by nine months of electric vehicle data. Consistency is an essential factor affecting the operation of lithium-ion battery packs.

What is the consistency of lithium-ion batteries?

The industry standard defines the consistency of lithium-ion batteries as the consistency characteristics of the cell performance of battery modules and assemblies.

Are grouped lithium-ion batteries consistent?

Qian et al. evaluated the consistency of grouped lithium-ion batteries based on characteristic peaks of incremental capacity curves. This method can quickly describe the consistency issue of battery packs and can be applied during the charging process of battery packs.

What causes inconsistency in a lithium-ion battery pack?

Inconsistency in the battery pack. The lithium-ion battery pack is a complex electrical and thermal coupling system. There are many factors affecting the inconsistency of the battery pack, which can be summarized into three aspects: the raw material, the manufacturing process, and the use process . 2.1. Difference in materials

Why is consistency important in battery packs?

The evaluation of consistency in battery packs is therefore crucial. The initial consistency concerns the differences between batteries, even for those manufactured in the same batch .

How to evaluate the inconsistency of parameters in a battery pack?

Inconsistent evaluation: These methods aim to evaluate the inconsistency of parameters by using machine learning algorithms to reflect the performance of battery pack. Fan et al. proposed a parameter consistency model based on the generative adversarial network (GAN) for the battery pack.