Lithium battery pole piece powder wiping mechanism
A lithium battery and pole piece technology, applied in the field of lithium battery pole piece powder wiping mechanism, can solve the problems of large negative pressure energy consumption, inability to remove dust, and poor flexible adjustment ability, so as to reduce the use of negative pressure and ensure powder wiping. Effect, complete effect of dust removal
Pending Publication Date: 2020-08-14
DONGGUAN ARECONN PRECISION MACHINERY
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Problems solved by technology
However, the existing powder wiping device has poor flexible adjustment ability, and cannot flexibly and effectively dust the pole piece with different slurry coating humidity or the parts with different humidity on the pole piece, resulting in poor powder wiping effect of the overall pole piece. Thus affecting the quality of lithium battery pole piece
[0004] In addition, dust will be generated during the powder wiping process, especially the slots formed by wiping will accumulate dust. If the generated dust cannot be removed in time and is packed into the battery, it will have a great impact on the safety and quality of the battery.
The dust removal components in the existing powder wiping devices usually only use the negative pressure dust suction method, and the flexibility of the negative pressure dust suction is poor. High energy consumption
Method used
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[0031] The technical solutions of the present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings, but the protection scope and implementation methods of the present invention are not limited thereto. In the description of the embodiments of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, or the usual swings when the product of the invention is used. The orientation or positional relationship is only used to distinguish the description, it is only for the convenience of describing the present invention and simplifying the description, and it does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as limiting the in...
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The invention discloses a lithium battery pole piece powder wiping mechanism. The powder wiping mechanism comprises a powder wiping assembly. The powder wiping assembly comprises a powder wiping driving part and a plurality of powder wiping modules; the plurality of powder wiping modules are arranged along the width direction of a pole piece; each powder wiping module is provided with a wiping head, and during powder wiping operation, a powder wiping material belt for powder wiping passes through the wiping heads of the powder wiping modules in sequence in an unwinding and winding mode; the powder wiping driving part can drive the plurality of powder wiping modules to do reciprocating wiping movement along the width direction of the pole piece; and the powder wiping modules are also provided with diluent spray heads facing the same direction as the wiping heads. In addition, an air knife and a dust collection cavity are further included; and the air knife and the dust collection cavityare oppositely arranged and are respectively positioned on two opposite sides of the powder wiping modules along the advancing axial direction of the pole piece. The powder wiping mechanism can guarantee the powder wiping effect of the whole pole piece, is high in flexibility, and can thoroughly remove dust generated by powder wiping.
Description
technical field [0001] The invention relates to the technical field of lithium battery pole piece production equipment, in particular to a lithium battery pole piece powder wiping mechanism. Background technique [0002] In the production process of lithium battery pole pieces, after the slurry is coated on the pole piece substrate, the pole piece will be cut according to the required size and shape. After the cutting of the pole piece is completed, the pole piece needs to be dusted to form the slot. [0003] Since the powder wiping process is carried out after the slurry coating is formed, the humidity of the slurry coating between different pole pieces will be different during powder wiping, and even in different parts of the same pole piece. . However, the existing powder wiping device has poor flexible adjustment ability, and cannot flexibly and effectively dust the pole piece with different slurry coating humidity or the parts with different humidity on the pole piece...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01M4/04H01M10/052H01M6/14
CPCH01M4/0404H01M4/04H01M10/052H01M6/14Y02E60/10
Inventor 严海宏李昌涛
Owner DONGGUAN ARECONN PRECISION MACHINERY