powder spreading device

Abstract

A powder spraying apparatus, comprising a hopper (1), a primary bin (2), a secondary bin (3), and a feed pan (9), wherein a screen (4) is arranged between the hopper (1) and the primary bin (2), the screen (4) is connected to a shaking motor (5), and a first laser sensor (6) for detecting the feed position of the primary bin (2) is arranged above the primary bin (2). An ultrasonic screen (8) is arranged between the primary bin (2) and the secondary bin (3), and a second laser sensor (7) for detecting the feed position of the secondary bin (3) is arranged above the secondary bin (3); the feed pan (9) is disposed below the secondary bin (3), and is connected to an electromagnetic shaker (12) and at least one pressure sensor (11) for use in sensing the quantity of a powder on the feed pan (9); and a system adjusts the operating frequency of the shaker according to a signal from the pressure sensor (11), so as to adjust the quantity of powder retained on the feed pan (9).

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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