A cylindrical battery pack system and its safe operation and recovery method

Abstract

The invention provides a cylindrical battery pack system, which includes a cylindrical battery pack and a safe operation and safe recovery system. In the cylindrical battery pack system, through the safe operation and safe recovery system, the battery cells in the cylindrical battery pack are injected, replenished, heated, cooled, and injected with safener, so as to ensure the safe operation of the cylindrical battery pack and recycling safety. The battery cell of a cylindrical battery includes a hollow winding core with a flow port on the side wall. The winding part is wound on the winding core. Each layer in the winding part adopts a porous structure, thus allowing the fluid to flow from the winding core. Flow from the inside to the outside or flow from the outside of the cell to the inside of the winding core, so that the electrode material and the separator can be fully infiltrated, the electrolyte of the faulty battery cell can be quickly discharged, and the residual electrolyte in the battery cell can be dried in time. Dry or condense. The invention also provides a safe operation method and a safe recovery method of the cylindrical battery pack system.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a cylindrical battery pack system capable of safe operation and safe recovery. Background technique [0002] Due to the advantages of high energy density and high cycle efficiency, lithium-ion batteries occupy a large share of the global portable electronic device market, and are gradually being used in the fields of electric vehicles and electric energy storage. Most of the existing power lithium batteries and grid energy storage lithium batteries are developed from small batteries such as mobile phone batteries. Their structural design and material selection do not consider the links of maintenance, regeneration and recycling. The actual calendar life of about five years and battery The recycling and regeneration problems brought about after scrapping not only increase the cost of the whole industry chain, but also become a severe challenge to the sustainable development of the energy ...

AI Technical Summary

Problems solved by technology

In this way, on the one hand, it is difficult to ensure that the electrochemical reaction will not continue to occur inside the lithium-ion battery. On the other hand, there is still electrolyte in the lithium-ion battery, so safety accidents are prone to occur, which in turn leads to the failure of the lithium-ion battery during loading and transportation. burning explosion

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