Analysis of the causes of mobile energy storage power aging

How can aging assessment be used in energy storage systems?

To meet the development prospects of energy storage systems, we propose to develop an aging assessment methodology for LFP batteries based on their modeling by electrical equivalent circuit. This approach allows quantifying properly the depth of each aging mode and specifies the number of battery remaining cycles.

What are battery degradation modes based on Aging mechanisms?

According to the aging mechanisms, battery degradation modes are mainly divided into two categories: loss of lithium inventory (LLI) and loss of active materials (LAM), which are the main factors leading to battery performance degradation.

What are the aging mechanisms of fast charging batteries?

The main aging mechanisms of fast charging batteries are lithium plating and loss of active materials. Of course, accelerated aging would be pointless if the battery suffers significant lithium plating and active materials loss .

How does battery aging affect the life of a battery?

The aging of LIBs is affected by multiple factors, making it difficult to predict their lifetime. The nature of battery aging lies in the physico-chemical reactions of various components inside the battery. For example, battery capacity fade is caused by the loss of active lithium and active materials.

How can aging characteristic analysis predict battery state of Health?

Methods based on aging characteristic analysis achieve battery state of health (SOH) prediction by in-situ monitoring of characteristics such as temperature and pressure during battery aging process. These methods are complementary to electrochemical performance-based approaches.

Why is predicting battery aging important?

Accurately predicting battery aging is critical for mitigating performance degradation during battery usage.