Slurry coating device for battery pole piece in new energy battery production

Abstract

The invention discloses a slurry coating device for a battery pole piece in new energy battery production. The device comprises a transmission mechanism, the transmission mechanism is mainly composed of a bottom plate, first vertical plates, second vertical plates, third vertical plates, fourth vertical plates, a discharging roller, a first positioning roller, a second positioning roller, a winding roller and a winding motor, a coating mechanism and a drying mechanism are further arranged between the second vertical plates, the coating mechanism is located above the drying mechanism, and material passing openings are formed in the top and the bottom of the drying mechanism correspondingly. With the device, the pole piece is relatively stable during slurry coating, so that the slurry coating uniformity is facilitated, meanwhile, slurry on the pole piece can be controlled through a fixed scraper and a movable scraper, so that the non-uniformity of the slurry on the pole piece caused by the non-uniformity of the slurry discharged from a movable coating machine head is prevented, and the slurry coating uniformity is further ensured; and when the pole piece is conveyed, the pole piece can pass through a first driving assembly and a second driving assembly conveniently, and thus a large amount of preparation time before production is saved.

Description

technical field [0001] The invention relates to the technical field of new energy battery production, in particular to a battery pole piece slurry coating device for new energy battery production. Background technique [0002] The battery electrode is one of the most important parts of the battery composition. The uniformity of the electrode greatly affects the cycle life and charge-discharge performance of the battery. The thickness of the electrode determines the key factor of the battery capacity. The electrode with excellent performance will be in the To a certain extent, the cycle life of the battery is improved, and the unevenly coated electrodes may cause safety accidents such as battery fire or even explosion. Traditional battery pole piece coating is usually done manually. This kind of battery The pole piece coating method often has problems such as low coating efficiency, uneven coating, and only one side of the battery pole piece is coated, and the operation is cu...

AI Technical Summary

Problems solved by technology

[0002] The battery electrode is one of the most important parts of the battery composition. The uniformity of the electrode greatly affects the cycle life and charge-discharge performance of the battery. The thickness of the electrode determines the key factor of the battery capacity. The electrode with excellent performance will be in the To a certain extent, the cycle life of the battery is improved, and the unevenly coated electrodes may cause safety accidents such as battery fire or even explosion. Traditional battery pole piece coating is usually done manually. This kind of battery The pole piece coating method often has problems such as low coating efficiency, uneven coating, and only one side of the battery pole piece is coated, and the operation is cumbersome. However, the existing battery pole piece coating device can make both sides of the pole piece material evenly coated. Covered with slurry, but because the properties of the battery slurry change with the temperature during the coating process, and slurry remains on the non-slurry part on both sides of the pole piece, resulting in uneven slurry coating and coating of the pole piece The problem of poor quality, which affects the overall coating efficiency and later use cost

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