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Method for recycling retired battery

A battery recycling and battery technology, applied in battery recycling, recycling technology, recycling by waste collectors, etc., can solve the problems of irreversible capacity loss and irreparable, and achieve the effect of good recycling performance and strong applicability

Inactive Publication Date: 2019-07-16
SHENZHEN PANDPOWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The irreversible capacity loss caused by these lithium losses is irreparable

Method used

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0032] The following provides a specific implementation method for the recycling and reuse of decommissioned batteries, and the steps are as follows:

[0033] (1) Taking the single battery of lithium iron phosphate electric bus as an example, the nominal capacity is 100Ah, and the retired single battery whose actual capacity is 60-80% of the nominal capacity is selected from the retired single battery, that is, the selected capacity is Batteries in the 60-80Ah ran...

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Abstract

The invention discloses a method for recycling a retired battery, and relates to the technical field of recycling of lithium ion batteries. The method comprises the following steps of firstly, selecting single retired batteries with actual capacity which is 60-80% of the nominal capacity, and performing grading on the batteries based on battery capacity; next, according to the different grades, injecting the batteries with electrolytes of different weights and sealing the batteries; and finally, carrying out grading and grouping again according to the battery capacity and the charge transfer impedance after the batteries are activated. By adopting the method disclosed by the invention, the capacity of the batteries repaired by the method can be recovered to the level of an in-service powerbattery, and the recycling performance is high.

Description

technical field [0001] The invention relates to the technical field of recovery and reuse of lithium ion batteries, in particular to a method for recovery and reuse of decommissioned batteries. Background technique [0002] Electric vehicles have been promoted for several years, and a large number of decommissioned power batteries have been produced. In order to make more effective use of these waste batteries, the existing technology generally directly sorts the decommissioned batteries, matches them, and reuses them. For example, they are used in energy storage, low-speed power etc. [0003] Lithium-ion batteries are rocking-chair batteries. Lithium ions go back and forth between two electrodes, detach and intercalate to generate electrical energy. The number of lithium ions and the difficulty of the round-trip path affect the capacity of the battery. The remaining capacity of the battery that is retired and reused is generally between 60-80%. The loss of battery capacity...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 刘晨露刘航刘卫强吴晓凤李昌坤罗勇黄玲张涵
Owner SHENZHEN PANDPOWER CO LTD
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