Retired lithium iron phosphate and ternary lithium battery hybrid coordination control method and system

A ternary lithium battery, coordinated control technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve problems such as limited recycling effects, achieve high cycle times and life, and improve discharge environment Effect
CN110380144AActive Publication Date: 2019-10-25CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2019-10-25

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Abstract

The invention discloses a retired lithium iron phosphate and ternary lithium battery hybrid coordination control method and system. The control method comprises the following steps: screening retiredbatteries, screening and grouping the retired batteries of the same type which meet the requirement that the residual life is close to the residual capacity; connecting different types of battery packs in series to form a battery module, wherein the different types of battery packs in the battery module meet the following conditions: the number of the different types of battery packs, the total capacity of the battery packs and the average service life of battery cells in the battery packs are equal; monitoring and arranging the performance of the battery in the battery module, monitoring andanalyzing the performance of the module, and then managing and controlling the battery module, wherein the retired battery comprises lithium iron phosphate and a ternary lithium battery. The lithium iron phosphate battery and the ternary lithium battery of a retired electric vehicle are used as objects, the advantages of the two lithium batteries are fully played, the raw material cost of the power battery is saved, the service life of the retired batteries is prolonged, and the performance of the power battery is fully utilized.
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Description

technical field

[0001] The invention relates to the technical field of lithium battery recycling, in particular to a coordinated control method and system for decommissioned lithium iron phosphate and ternary lithium batteries. Background technique

[0002] With the rapid development of my country's new energy vehicle industry, the consumption of power batteries is also "increasing". When the remaining battery capacity of the battery on the new energy vehicle is reduced to 80% of the original capacity, it cannot meet the mileage demand of the electric vehicle, and it needs to be used as a decommissioned battery. deal with. There is a large amount of electricity left in the decommissioned battery, so if it is treated scientifically, it can still be used again to avoid energy waste. Decommissioned batteries are usually reused after testing the remaining power (State of Charge, SOC), screening healthy batteries, and finally reorganizing.

[0003] With the development of scienc...

Claims

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