Charge management method for novel iron phosphate lithium batteries

Abstract

The invention relates a charge management method for novel iron phosphate lithium batteries. The nominal voltage and the battery capacity of an iron phosphate lithium battery are respectively set as Un and C, the iron phosphate lithium battery is dynamically charged according to a charging curve of the iron phosphate lithium battery, and the charging curve is provided with a first current conversion time T1, a second current conversion time T2, a third current conversion time T3 and a fourth current conversion time T4; shallow-charging and shallow-discharging of the iron phosphate lithium battery are realized to avoid high multiplying power charging and discharging, thereby physical property and chemical property of the iron phosphate lithium battery are maintained, and the iron phosphate lithium battery is enabled to have the advantages of large inputting and outputting powers, wide working temperature range, no memory effect, ultralong service life with more than 2000 times of charging, environmental-friendliness, outstanding floating property and the like, can be utilized to the field of backup power sources for transformer stations, and can meet requirements of the transformer stations for increasing intelligentization and automation.

Description

technical field [0001] The invention relates to a battery charging control method, and more specifically, to a novel lithium iron phosphate battery charging management method. Background technique [0002] At present, the substation DC power system mainly uses lead-acid batteries. Although lead-acid battery technology has been continuously improved, it still has short life, heavy maintenance workload, small working current range, and sensitivity to temperature changes. With the promotion of unattended substations and the improvement of the automation level of substation systems, higher requirements are put forward for the performance, safety and reliability of batteries. The hidden dangers caused by lead-acid batteries to the DC system of substations due to their own performance weaknesses are gradually increasing. [0003] Lithium iron phosphate battery is a new type of secondary power supply newly developed in recent years. Its main advantages are large input and output po...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the shallow charge and shallow discharge of the lithium iron phosphate battery cannot be effectively carried out in view of the prior art, and the situation of high-rate charge and discharge is prone to occur, so that the physical characteristics and chemical properties of the lithium iron phosphate battery cannot be effectively maintained. characteristics and other defects, providing a new charging management method for lithium iron phosphate batteries

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