Cylindrical battery pack system and safe operation and recovery method thereof

Abstract

The invention provides a cylindrical battery pack system. The cylindrical battery pack system comprises a cylindrical battery pack and a safe operation and safe recovery system. In the cylindrical battery pack system, operations such as liquid injection, liquid supplementation, heating, cooling and safener injection are carried out on the single batteries in the cylindrical battery pack through the safe operation and safe recovery system, so that the operation safety and the recovery safety of the cylindrical battery pack are ensured. A single battery of the cylindrical battery comprises a hollow roll core with a circulation opening in the side wall; the winding part is wound on the roll core; each layer in the winding part is of a porous structure, so that fluid is allowed to flow from inside to outside from the roll core or flow from outside to inside from the outer side of the battery core, an electrode material and an isolation layer can be fully infiltrated, electrolyte of a faulty battery unit can be quickly discharged, and residual electrolyte in the battery unit can be dried or condensed in time. The invention also provides a safe operation method and a safe recovery methodof the cylindrical battery pack system.

Description

technical field [0001] The present invention relates to the field of batteries, in particular to a cylindrical battery pack system that can be operated and recycled safely. Background technique [0002] Lithium-ion batteries occupy the majority of the global portable electronic device market due to their high energy density and high cycle efficiency, and are gradually being used in electric vehicles and power storage. Most of the existing power lithium batteries and grid energy storage lithium batteries are developed from micro and 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 the battery The recycling and regeneration problems brought by scrapping not only increase the cost of the whole industry chain, but also become a serious challenge for the sustainable development of the energy storage lithium battery in...

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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