An auxiliary device for lithium battery negative electrode preparation that improves coating accuracy

Abstract

The invention provides an auxiliary device for preparing negative electrodes of lithium batteries to improve coating accuracy, which belongs to the technical field of preparation devices for positive and negative electrodes of lithium batteries, and includes an auxiliary seat. Photosensitive resistor, the photosensitive resistor corresponds to the reflected light of the light emitted by the light emitter, the photosensitive resistor is electrically connected with an electromagnet, the auxiliary seat is provided with a detection seat, and the detection seat is rotatably connected with a detection piece, and the two ends of the detection piece are connected A counterweight is attached. The lithium battery negative electrode preparation auxiliary device that improves the coating accuracy improves the accuracy of the lithium battery negative electrode coating through the combination of light emitters, photoresistors, electromagnets, detection parts, and electrical connectors, effectively avoiding the risk of The asymmetry of the coating on both sides of the negative electrode prevents the capacity of the negative electrode from being released evenly on both sides, and causes the coating to have inconsistent adhesive strength, which makes the cycle life of the charging and discharging point of the negative electrode coating on both sides unbalanced, thereby improving the service life of the lithium battery.

Description

Technical field [0001] The present invention relates to the technical field of lithium battery positive and negative electrode preparation devices, in particular, a lithium battery negative electrode prepared auxiliary device for increasing the degree of coating. Background technique [0002] The lithium battery includes a positive electrode and a negative electrode, and the material is generally mainly used is an aluminum foil. The material is generally used as a copper foil. The positive and negative is an important factor affecting the performance of lithium battery. In addition to its own thickness weight, the lithium battery has an effect on the lithium battery. The surface performance has a large effect on the production and performance of the battery, especially the negative surface coating. [0003] The negative electrode copper foil is generally a double-sided coating, and the copper foil is often in the surface of the coating, which often is not sufficiently sorry due t...

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Problems solved by technology

[0003] Negative electrode copper foil is generally coated on both sides. During the coating preparation process on the surface of the copper foil, the symmetry accuracy of the upper and lower coatings is often insufficient, resulting in asymmetrical contact resistance between the negative electrode coatings on both sides of the negative electrode due to asymmetry, thus As a result, the capacity of the negative electrodes on both sides cannot be released uniformly, and at the same time, the adhesive strength of the negative electrode coatings is inconsistent, which makes the cycle life of the charging and discharging points of the negative electrode coatings on both sides seriously unbalanced, and accelerates the attenuation of battery capacity.

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