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Cascade utilization evaluation method for retired iron phosphate lithium batteries

A lithium iron phosphate battery and lithium iron phosphate technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problems of incomplete and accurate evaluation methods, achieve reliable assurance of safety and electrochemical performance, and good technical support Effect

Pending Publication Date: 2019-03-22
CHINA ELECTRIC POWER RES INST +3
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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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  • Cascade utilization evaluation method for retired iron phosphate lithium batteries
  • Cascade utilization evaluation method for retired iron phosphate lithium batteries
  • Cascade utilization evaluation method for retired iron phosphate lithium batteries

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Embodiment Construction

[0050] The technical solution of the present invention will be further described in detail below through specific embodiments and drawings:

[0051] Such as figure 1 As shown, a method for evaluating the echelon utilization of decommissioned lithium iron phosphate batteries, the method includes the following steps:

[0052] 1) Analyze historical operating data of lithium iron phosphate power batteries, and eliminate unqualified decommissioned lithium iron phosphate batteries;

[0053] 2) Inspect the appearance of qualified decommissioned lithium iron phosphate batteries by visual inspection, and screen out the lithium iron phosphate power batteries whose appearance does not meet the standard;

[0054] 3) Evaluate the performance of decommissioned lithium iron phosphate batteries that meet the standards and determine whether the batteries can be used in cascades.

[0055] The historical operating data includes voltage and temperature data; the judging criteria for the unqualified data in...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/378
Inventor 范茂松王凯丰杨凯高飞刘皓耿萌萌张明杰王康康
Owner CHINA ELECTRIC POWER RES INST
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