A continuous composite device for winding laminated cell units

Abstract

The invention relates to a continuous composite device of a wound-type laminated cell unit, which includes a discharge device, a positioning mechanism and a pressure roller composite mechanism. The discharge device includes an anode discharge mechanism, a cathode discharge mechanism, an upper diaphragm discharge material mechanism and lower diaphragm discharge mechanism, the pressure roller composite mechanism includes a front pressure roller composite mechanism and a rear pressure roller composite mechanism, and the front pressure roller composite mechanism is used to separate the anode discharge mechanism and the upper diaphragm discharge mechanism Composite with the anode sheet, upper diaphragm and lower diaphragm obtained by the lower diaphragm discharging mechanism to form an anode composite pole belt, and the rear pressure roller composite mechanism is used to carry out the cathode sheet obtained from the cathode discharge mechanism and the anode composite pole belt composite to form the cathode composite pole strip. The invention can avoid the phenomenon of partial compounding irregularity caused by the flatness of the flat pressing surface in the flat pressing type compounding process, not only improves the production efficiency, but also reduces the mechanical process loss and increases the service life of the equipment.

Description

technical field [0001] The invention relates to the technical field of cell compounding equipment, in particular to a continuous compounding device for wound-type laminated cell units. Background technique [0002] Since the commercialization of lithium-ion batteries in the 1990s, especially in recent years, with the growing market of 3C electronic products such as notebook computers, mobile power supplies and electric tools, and the gradual expansion of the electric vehicle market, countries around the world are vigorously developing High-energy, high-power lithium-ion power battery. At present, the production methods of lithium-ion batteries mainly include winding type and stacked type. From the perspective of lithium-ion battery performance and actual production: the advantage of winding is that the manufacturing process is easy, and the stacking type The advantage lies in the good quality of the battery in all aspects. In order to combine the advantages of the two proce...

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Problems solved by technology

[0004] At present, the commonly used composite unit manufacturing method of wound laminated batteries is: first cut the positive and negative pole pieces into a certain process size pole piece unit, and then cut the cut positive pole piece or negative pole piece unit in a certain way. Place it on the rubber-coated diaphragm at a fixed position, and then heat-compress the fixed diaphragm and pole pieces on the equipment. This traditional flat-press compounding process has the following problems: the unevenness of the flat-pressed surface causes local compounding In addition, this type of flat pressing and composite method of up and down flat pressing will also cause a relatively large loss of mechanical equipment.

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