Powder scattering device

Abstract

The invention discloses a powder scattering device which comprises a hopper, a primary bin, a secondary bin and a material plate. A screen is arranged between the hopper and the primary bin, a vibration motor is connected to the screen, and a first laser sensor for detecting the material level of the primary bin is arranged above the primary bin. An ultrasonic screen is arranged between the primary bin and the secondary bin, and a second laser sensor for detecting the material level of the secondary bin is arranged above the secondary bin. The material plate is located under the secondary bin, an electromagnetic oscillator and at least one pressure sensor for sensing the powder amount on the material plate are connected to the material plate, and a system adjusts the working frequency of a vibrator according to signals of the pressure sensors so as to adjust the inventory of the powder fed to the material plate. The powder scattering device has the advantages of achieving final, uniform and equal-amount powder scattering through multi-point control, equal-amount control and constant speed control.

Description

technical field [0001] The invention relates to the field of powder spreading machines, in particular to a powder spreading device. Background technique [0002] In the battery production process, the lithium-replenishment process of lithium-ion battery pole pieces is the key technology to improve the capacity of lithium-ion batteries. The lithium-replenishment process is divided into the powder-sprinkling lithium-replenishment process and the film-covered lithium-replenishment process. The difficulty of the powder-sprinkled lithium-replenishment process It is an even and equal amount of powder, otherwise it will lead to uneven distribution of lithium ions on the battery pole piece, which will affect the use effect of the battery. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a powder spreading device capable of accurately spreading powder in view of the above-mentioned defects in the prior art. [0004] The t...

AI Technical Summary

Problems solved by technology

[0002] In the battery production process, the lithium-replenishment process of lithium-ion battery pole pieces is the key technology to improve the capacity of lithium-ion batteries. The lithium-replenishment process is divided into the powder-sprinkling lithium-replenishment process and the film-covered lithium-replenishment process. The difficulty of the powder-sprinkled lithium-replenishment process It is an even and equal amount of powder, otherwise it will lead to uneven distribution of lithium ions on the battery pole piece, affecting the use of the battery

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