Echelon Utilization Base Station Power Supply Model

Why should a battery echelon utilization system be standardized?

A large-scale and standardized design of an LIB echelon utilization system can reduce the sorting and regrouping costs, while an intelligent BMS can improve the safety and extend the total life cycle of the battery, which directly increases the economic value.

Does China have an echelon utilization supply chain?

So far, research on the echelon utilization supply chain in China is relatively scarce. At the same time, it encouraged echelon utilization enterprises to produce echelon products that are suitable for base station backup, energy storage, charging, and replacement to meet the requirements of the EPR system.

What is regrouped battery system for Echelon utilization?

The regrouped battery system for echelon utilization consists of smaller regrouped units (i.e., cell, module, or peak level). Therefore, some smallest regrouped units in the regrouped battery system can be randomly selected for testing to evaluate the rationality of the sorting and regrouping method and results.

Is pack-level echelon utilization feasible for large-scale ESS?

Moreover, some cells inside a retired battery pack have poor consistency, and their maximum residual value cannot be mined. Finally, pack-level echelon utilization is constrained by the application scenario. It is widely accepted that pack-level echelon utilization has good feasibility for large-scale ESSs. Fig. 3.

How to evaluate echelon utilization?

Hence, before considering echelon utilization, it is essential to assess the SOH. This evaluation primarily involves testing the battery's capacity, internal resistance, aging, self-discharge, and other relevant parameters. Typically, retired batteries undergo capacity testing using low currents.

Is module-level echelon utilization a good choice?

Module-level echelon utilization is a good choice and promising scheme in terms of economy, maneuverability, and matching the target market. Pack-level echelon utilization is the most economical solution, and keeping the pack unbroken can help maintain the safety of the battery before retirement.