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Method and system for screening and grouping echelon utilization batteries

A battery and grouping technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc.

Inactive Publication Date: 2019-08-30
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention proposes a method and system for screening and grouping of cascade utilization batteries to solve the problem of how to perform screening and grouping of cascade utilization batteries

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  • Method and system for screening and grouping echelon utilization batteries
  • Method and system for screening and grouping echelon utilization batteries

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Embodiment Construction

[0053] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0054] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a method and system for screening and grouping echelon utilization batteries. The method comprises the following steps of acquiring discharge energy, energy efficiency, directcurrent internal resistance and open circuit voltage of a plurality of decommissioned power batteries; selecting a plurality of decommissioned power batteries as echelon utilization batteries according to a preset battery screening strategy; and screening and grouping the plurality of echelon utilization batteries according to a preset screening and grouping strategy. By using the discharge energy, the energy efficiency, the direct current internal resistance and the open circuit voltage of the echelon utilization batteries as parameters, the screening and grouping method suitable for the decommissioned power batteries in the energy storage application is established, and the decommissioned power batteries can be accurately classified, so that the echelon utilization is carried out on thebatteries, the utilization rate of the batteries is improved, and the resources are saved.

Description

technical field [0001] The present invention relates to the technical field of cascaded utilization of batteries, and more particularly, to a screening and grouping method and system for cascade utilization of batteries. Background technique [0002] The screening and matching of lithium-ion batteries is mainly based on the combination of certain battery parameters to carry out battery screening and matching. At present, there are four commonly used methods: 1) Battery screening strategy based on capacity, AC internal resistance, and open circuit voltage , 2) A battery screening method based on capacity and DC internal resistance, 3) A screening method for capacity, internal resistance, and self-discharge rate, 4) A battery sorting method based on AC impedance technology. [0003] At present, when electric vehicle batteries are selected, they are sorted and selected mainly based on the capacity, internal resistance and open circuit voltage of the batteries. For new large-cap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/344H01M10/42
CPCB07C5/344H01M10/4221Y02E60/10
Inventor 王凯丰杨凯范茂松高飞刘皓张明杰耿萌萌王康康
Owner CHINA ELECTRIC POWER RES INST
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