Battery cathode material mixing device with demagnetizer

Abstract

The invention discloses a battery cathode material mixing device with a demagnetizer. The battery cathode material mixing device comprises a damping base, a mixing chamber is arranged at the top of the damping base, a discharge pipe and a second additive inlet pipe are arranged on the right side of the mixing chamber, a first additive inlet pipe is arranged on the left side of the mixing chamber, and the top of the mixing chamber is provided with a motor cover and a feed port. The battery cathode material mixing device is simple in structure, reasonable in design and convenient to use, materials enter the device through a feed pipe, crushed qualified materials are filtered by a filter plate after being crushed by a first crushing shaft and a second crushing shaft, and the materials are demagnetized in a demagnetizing pipe for the first time and uniformly scattered under the action of a scattering device to contact with the left inner wall and the right inner wall of the demagnetizing pipe, so that the materials are more thoroughly demagnetized. The materials fall onto the demagnetizer and are secondarily demagnetize, so that the materials are more rapidly demagnetized, demagnetizing effects are better, and the materials are conveyed into the mixing chamber through the feed port and stirred and mixed with additives.

Description

technical field [0001] The invention relates to a battery processing equipment, in particular to a battery negative electrode material mixing equipment with a demagnetization device. Background technique [0002] Graphite is often used as the anode material of lithium-ion batteries due to its advantages of wide source, cheap price, low charge and discharge voltage platform, and high reversible capacity, but there are many disadvantages in using graphite as the anode material of lithium-ion batteries; electrode materials are an important The components are the core of lithium-ion batteries; the production of lithium-ion battery negative electrode materials requires mixing of various raw materials, and the materials have certain particle size requirements, which need to be mixed, crushed, stirred, sieved and other processes in a stirred tank. During these processes, it is inevitable that some ferrous magnetic substances will be mixed in, and the material itself will also conta...

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Problems solved by technology

[0002] Graphite is often used as the anode material of lithium-ion batteries due to its advantages of wide source, cheap price, low charge and discharge voltage platform, and high reversible capacity, but there are many disadvantages in using graphite as the anode material of lithium-ion batteries; electrode materials are an important The components are the core of lithium-ion batteries; the production of lithium-ion battery negative electrode materials requires mixing of various raw materials, and the materials have certain particle size requirements, which need to be mixed, crushed, stirred, sieved and other processes in a stirred tank. During these processes, it is inevitable that some ferrous magnetic substances will be mixed in, and the material itself will also contain some magnetic substances. These magnetic substances have a serious negative impact on the electrochemical performance of the material, and the material must be demagnetized; For the magnetic substances mixed in the material, generally a drawer-type demagnetization structure is set in the screening device, and the magnetic substances are adsorbed and separated through the pluggable magnetic rods. In this way, it is difficult to remove the magnetic substances in the material due to the large distance between the magnetic rods. The magnetic substance is fully adsorbed, resulting in poor screening effect and many residual magnetic substances, which seriously affects the use of lithium-ion battery negative electrode materials and shortens the life of lithium-ion batteries

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