Cascade utilization analyzing method for lithium-ion power batteries

A power battery and analysis method technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as inconsistent health status, and achieve the effect of ensuring consistency and maximizing resource utilization

Active Publication Date: 2016-07-06
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are the following technical problems in the existing technology: the power batteries eliminated from electric vehicles have inconsistent health status, and strict screening must be carried out to eliminate a small number of problematic batteries that have been inconsistent with most batteries. Only through reasonable screening, Secondary use can give full play to its value

Method used

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  • Cascade utilization analyzing method for lithium-ion power batteries
  • Cascade utilization analyzing method for lithium-ion power batteries
  • Cascade utilization analyzing method for lithium-ion power batteries

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Embodiment Construction

[0038] The cascade utilization analysis method for lithium-ion power batteries is characterized in that it comprises the following steps:

[0039] a. Pre-screen the lithium-ion power battery to be analyzed.

[0040] The first is dismantling. After discharging the recovered waste power battery pack, it is then disassembled without damage to obtain the battery cell; use a screwdriver to remove the screws on the battery pack, and remove the non-battery cell parts one by one. The position that cannot be disassembled with a screwdriver is cut with a knife, the battery pack is disassembled into a battery module, and then the battery module is disassembled into a battery cell, and finally several battery cells are obtained. Power batteries of the same specification and model shall be separated into groups.

[0041] The second is appearance screening. After dismantling the decommissioned battery packs of electric vehicles, the appearance evaluation of power batteries of the same spec...

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Abstract

The invention discloses a cascade utilization analyzing method for lithium-ion power batteries. The influence of temperature and working conditions on sorting of lithium-ion power batteries is taken into consideration. Under a certain temperature condition, the discharge evaluation on lithium-ion power batteries is conducted, and actual available capacity and internal resistance under certain conditions are evaluated, and the lithium-ion power batteries are subjected to reasonable cascade sorting according to the actual available capacity, internal resistance and other parameters, so that the consistency of reused lithium-ion power batteries is ensured. The resource utilization of waste power batteries is maximized.

Description

technical field [0001] The invention relates to an analysis method for step-by-step screening of waste lithium-ion power batteries for repeated utilization. Background technique [0002] With the gradual industrialization of electric vehicles, the output of electric vehicle power lithium-ion batteries will be greatly increased. The ensuing question is how to recycle and dispose of waste power lithium-ion batteries. Power lithium-ion batteries for electric vehicles contain lead, nickel, cobalt, lithium and other metal materials and electrolytes. Once the waste batteries cannot be effectively recycled, it will not only cause waste of resources, but also seriously pollute the environment. [0003] Through cascade utilization, not only can the performance of power batteries be fully utilized, which is conducive to energy saving and emission reduction, but also can relieve the pressure on recycling work brought by a large number of power batteries entering the recycling stage. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3828
Inventor 谭晓军陆泳施陈维杰
Owner SUN YAT SEN UNIV
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