Power battery stirring type efficient complete discharge device and discharge method

Abstract

The invention provides a power battery stirring type efficient complete discharge device and a discharge method. The discharge device comprises a driving device, a closed cylinder, a stirring device,a solid discharge medium, a self-closing hole, a puncture device, an inflation device and a bracket, the driving device and the closed cylinder are fixed on the bracket; the stirring device and the solid discharge medium are arranged in the closed cylinder, and the power output end of the driving device is fixedly connected with a rotating shaft of the stirring device; the self-closing hole is formed in the closed cylinder, the puncture device is arranged on the outer side of the closed cylinder, and a puncture part of the puncture device is opposite to the self-closing hole; and the inflatingdevice is communicated with the air inlet of the closed cylinder. The device can effectively avoid the defects of the existing physical and chemical discharge methods, effectively reduce the harm ofthe discharge process to the environment and operators, protect the environment to the maximum extent, effectively relieve the technical difficulty of discharge and crushing recovery of the power battery, and improve the economic benefits of recovery enterprises.

Description

technical field [0001] The invention relates to the technical field of high-efficiency recycling of urban minerals, in particular to a stirring-type high-efficiency complete discharge device and a discharge method for a power battery. Background technique [0002] In the face of increasingly severe energy crisis and environmental problems, new energy electric vehicles have become the future development trend. In recent years, my country has vigorously developed new energy electric vehicles. With the rapid growth of market demand, the number of scrapped power batteries is also increasing sharply. It is predicted that by 2020, the amount of scrapped batteries in China will reach 500,000 tons. The first step in the recycling of lithium-ion power batteries is to safely and efficiently discharge the remaining power in the power battery before subsequent dismantling and crushing work can be carried out. The direct dismantling and crushing of undischarged or incompletely discharge...

AI Technical Summary

Problems solved by technology

The existing physical discharge method mainly relies on the discharge cabinet and solid discharge medium: the discharge time of the discharge cabinet is very long, generally more than 72 hours, and it cannot be completely discharged, and there is an obvious phenomenon of voltage rebound; the solid medium discharge only relies on the discharge medium and the battery positive Negative electrode contact discharge, the discharge efficiency of direct contact is too low; therefore, simple physical discharge is difficult to achieve efficient complete discharge

The existing chemical discharge method mainly relies on the discharge solvent, which is generally a salt solution. The discharge process is short, but it will generate a large amount of gas and easily corrode the positive and negative poles, thereby generating a large amount of toxic liquid and gas, which will affect the physical and mental health of workers in industrial production. It poses a huge threat to health, and at the same time, it is necessary to build a huge amount of additional toxic and harmful gas recovery devices, and the economic benefits are poor

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