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Decommissioned battery cascade utilization method

A battery cascade and battery technology, applied in the direction of secondary batteries, battery recycling, recycling technology, etc., can solve problems such as inability to automatically adjust

Active Publication Date: 2020-10-23
ANHUI LVWO RECYCLING ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this cascade utilization method of decommissioned batteries cannot automatically adjust the output energy to the PCS and charger according to the capacity of the current cascade battery itself, and cannot be diversified and compatible with various cascade battery clusters for parallel connection with high power output, and there are still differences in the parallel connection of different cascade battery clusters circulation problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 provides an echelon utilization method of decommissioned batteries, which is characterized in that it includes the following steps:

[0049] Step S1. Sorting of decommissioned batteries: Based on the historical data of the batteries, perform a preliminary assessment of the health parameter SOH of the battery pack; then sort the external characteristic indicators of the single retired batteries that have undergone preliminary evaluation to determine whether the decommissioned batteries are acceptable Carry out echelon utilization, and exclude those that cannot be echelon utilization;

[0050] Step S2. Reorganization of single retired batteries: Classify the retired batteries that have passed the classification in step S1 according to the pre-set classification standards, and then reorganize the classified retired batteries according to the grouping requirements, and wait for tiered use;

[0051] Step S3, the construction of a flexible group energy storage system ba...

Embodiment 2

[0067] Embodiment 2 provides a cascade utilization method of decommissioned batteries, which is basically the same as embodiment 1, except that the number of basic energy storage units in step S3 is 10; the number of single cascade battery clusters is 5. A; The operating voltage of the single-cluster battery cluster is 650V.

Embodiment 3

[0069] Embodiment 2 provides a cascade utilization method of decommissioned batteries, which is basically the same as embodiment 1, except that the number of basic energy storage units in step S3 is 20; the number of single cascade battery clusters is 15 A; The operating voltage of the single-cluster battery cluster is 700V.

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Abstract

The invention discloses a decommissioned battery cascade utilization method, which is characterized by comprising the following steps of: S1, sorting decommissioned batteries; S2, recombining the single decommissioned batteries again; and S3, constructing a flexible grouped energy storage system based on parallel connection of a multi-cluster battery system. The invention further discloses application of the decommissioned battery cascade utilization method in recycling of decommissioned batteries of new energy vehicles. According to the decommissioned battery cascade utilization method disclosed by the invention, the decommissioned batteries can be rapidly, safely and efficiently utilized in an cascade manner, the reuse cost is low, the battery capacity can be adjusted according to the current cascade cluster, the energy is automatically adjusted and output to a PCS and a charger, the parallel high-power output of various cascade battery clusters can be compatible in a diversified manner, the problem of circulation generated between different cascade battery clusters in differential parallel connection is eliminated, the inconsistency of cascade batteries is well avoided, the optimal stable operation of the whole system is realized, and the safety risk in use is reduced.

Description

Technical field [0001] The invention belongs to the technical field of recycling and utilization of decommissioned batteries, and specifically relates to a method for echelon utilization of decommissioned batteries. Background technique [0002] In recent years, with the advancement of science and technology and the deepening of people's understanding of environmental issues, the vigorous development of the clean and environmentally friendly new energy automobile industry has promoted the rapid growth of new energy automobile production on the market. Power battery is the core component of new energy vehicles. After its capacity drops to a certain level, in order to ensure the cruising range and driving safety of new energy vehicles, power batteries whose capacity drops cannot meet the driving requirements of new energy vehicles must be replaced. The lower power battery is called a retired battery. With the support of policies, electric vehicles, which are common new energy vehi...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/44H01M10/54B07C5/344B07C5/34
CPCH01M10/4207H01M10/441H01M10/54B07C5/34B07C5/344Y02E60/10Y02W30/84
Inventor 昝向明
Owner ANHUI LVWO RECYCLING ENERGY TECHNOLOGY CO LTD
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