Cascade utilization evaluation method for retired iron phosphate lithium batteries

Abstract

The invention provides a cascade utilization evaluation method for retired iron phosphate lithium batteries. The method comprises the following steps that unqualified retired iron phosphate lithium batteries are removed from historical operation data of iron phosphate lithium power batteries; the appearances of the qualified retired iron phosphate lithium batteries are checked, and substandard iron phosphate lithium power batteries are screened out; the performance of the standard retired iron phosphate lithium batteries is evaluated, and whether the batteries can achieve cascade utilization or not is determined. According to the technical scheme, the performance condition of the retired iron phosphate lithium power batteries can be comprehensively mastered, whether the batteries can achieve cascade utilization or not is judged, the technical feasibility of cascade utilization of the retired iron phosphate lithium batteries can be identified, and therefore the safety and electrochemical performance of the retired iron phosphate lithium batteries in the cascade utilization process are ensured, and good technical support is provided for cascade utilization of the retired iron phosphate lithium batteries.

Description

Technical field [0001] The invention relates to an evaluation method of energy storage technology, in particular to an evaluation method of cascaded utilization of decommissioned lithium iron phosphate batteries. Background technique [0002] As the use time increases, the battery performance of the power battery of electric vehicles continues to decline. When the battery performance declines to a certain extent, in order to ensure the power performance, driving range and safety of the electric vehicle during use, the power battery of the vehicle Must be replaced; in general, the replaced power battery, the remaining remaining capacity is high at the bottom, etc., and the remaining energy is used in other fields for continued use, that is, the power battery is used in cascade. [0003] It is observed that the lithium iron phosphate lithium ion battery of the power battery for electric vehicles has many advantages such as high safety, strong environmental adaptability and long cycle...

AI Technical Summary

Problems solved by technology

[0005] The existing evaluation method for cascade utilization of decommissioned lithium iron phosphate batteries is incomplete and accurate. Therefore, it is necessary to provide an evaluation method for cascade utilization of decommissioned lithium iron phosphate batteries so that decommissioned lithium iron phosphate batteries can be fully utilized and ensure that decommissioned lithium iron phosphate batteries are fully utilized. Battery safety during cascade utilization

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