Method for automatically repairing extreme differences of rolling rollers of battery pole plate

Abstract

The invention discloses a method for automatically repairing extreme differences of rolling rollers of a battery pole plate. The method comprises the following steps of: 1, heating an upper rolling roller and a lower rolling roller at first; 2, placing a metal plate between the upper rolling roller and the lower rolling roller, wherein the top surface and the bottom surface of the metal plate are flat surfaces; 3, repeatedly grinding the metal plate by using the upper rolling roller and the lower rolling roller; and 4, stopping grinding the metal plate when both the upper rolling roller and the lower rolling roller become flat rollers. According to the method for automatically repairing the extreme differences of the rolling rollers of the battery pole plate, abrasions and slight distortions appearing on the surfaces of the rolling rollers of the battery pole plate can be conveniently and quickly repaired, so that gaps between the upper rolling roller and the lower rolling roller are effectively reduced, the battery pole plate placed between the upper rolling roller and the lower rolling roller can be normally rolled by the upper rolling roller and the lower rolling roller, and then the production quality of a produced battery pole plate is ensured.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an automatic repair method for extremely poor battery pole piece rolling rollers. Background technique [0002] Compared with other types of batteries such as lead-acid and nickel-cadmium, lithium-ion batteries have the advantages of large specific capacity, high operating voltage, fast charging speed, wide operating temperature range, long cycle life, small size, and light weight. At present, it has been widely used in mobile phones, notebook computers, electric tools and other fields, and its application range is becoming wider and wider, which is the main direction of development of major battery manufacturers. [0003] At present, lithium-ion batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, b...

AI Technical Summary

Problems solved by technology

[0005] However, due to the consumption and wear of the production equipment of the battery pole piece during the production process, the relevant important parts must be repaired or replaced after the equipment is used for a certain period of time. Roller, with the long-term rolling of pole pieces of different widths, the contact part between the rolling roller and the pole piece will be worn and deformed, making the rolling roller change from a flat roller (roller body with a straight outer surface) to a concave roller (outer surface Roller body with uneven surface), when the upper rolling roller and the lower rolling roller are in contact, there will be a gap in the middle part of the two rolling rollers for rolling the pole piece, and the edge between the two rolling rollers The gap at the middle position is smaller than the gap at the middle position. Therefore, at present, battery manufacturers need to regularly detect the effective width of the rolling rollers used to roll the battery pole pieces, that is, to test the width of the flat part of the surface of the rolling rollers to see if they are Reach the predetermined effective width required by the battery manufacturer. If it is found that the width of the flat part on the surface of the rolling roller does not reach the predetermined effective width required by the battery manufacturer, it means that the rolling roller is unqualified and needs to be replaced immediately by the battery manufacturer.

In view of the high precision of the parts of the rolling roller, the high cost of processing and grinding, it takes more time to replace, which affects the production efficiency of the battery pole piece on the one hand, and also increases the production cost of the battery;

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