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Charge management method for novel iron phosphate lithium batteries

A lithium iron phosphate battery, charging management technology, applied in battery circuit devices, current collectors, electric vehicles, etc. Green and environmentally friendly floating charge characteristics, high input and output power, and the effect of maintaining physical and chemical characteristics

Active Publication Date: 2015-05-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Charge management method for novel iron phosphate lithium batteries
  • Charge management method for novel iron phosphate lithium batteries
  • Charge management method for novel iron phosphate lithium batteries

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 As shown in the first embodiment and the second embodiment of the novel lithium iron phosphate battery charging management method of the present invention, it is mainly based on the charging curve of the lithium iron phosphate battery for dynamic charging control, that is, as image 3 The first commutation time point T1, the second commutation time point T2, the third commutation time point T3, and the fourth commutation time point T4 of the charging curve are shown, that is, the four points of the charging curve of the lithium iron phosphate battery An inflection point is ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 金林王洪刘平张忠民张广辉林雄武邢静原张雁忠贾广明周超赵立成
Owner STATE GRID CORP OF CHINA
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