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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

Active Publication Date: 2019-10-25
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

In the prior art, when recycling decommissioned lithium batteries, the same type of batteries is usually recycled. Since each battery has its own advantages and disadvantages, recycling various batteries individually will make them Recycling effect is limited

Method used

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

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Embodiment Construction

[0066] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0067] The embodiment of the present invention is: a hybrid coordination control method of decommissioned lithium iron phosphate and ternary lithium battery and its system composition, such as figure 1 As shown, the system includes a cascade utilization power battery module, a battery state detection module, a battery state analysis module, a battery safety protection module, an energy control management module, a battery information module, and a main control module. The information management module, the battery state analysis module, the battery safety protection module are connected to the energy control management module, and the cascade utilization power battery module is also electrically connected to the battery state detection module, the energy control ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCH01M10/4207Y02E60/10
Inventor 刘志强周浩宇吴钢向青青
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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