Sealing mechanism of battery secondary sealing machine

Abstract

The invention discloses a sealing mechanism of a battery secondary sealing machine, which comprises a sealing case, a sealing cavity, a shearing air bubble mechanism, a vacuum pumping assembly and a heating sealing mechanism. Sealing; the shear bubble mechanism is located in the sealed cavity, which includes a first driver, a breach scissors connected horizontally with the first driver and a second driver fixedly connected with the breach scissors, the first and second drivers Cooperate with driving the breach scissors to cut air bubbles; the vacuum assembly is arranged outside the sealed cavity to vacuumize and exhaust the battery; the heating and sealing mechanism includes a third driving member and at least one set of heating block components arranged in the sealed cavity for Heat and seal the battery after degassing. The invention realizes the full automation of air bubble discharge and heating and sealing of the battery without manual operation, thereby avoiding the short circuit phenomenon of the battery caused by manual operation, improving production efficiency and reducing production cost.

Description

technical field [0001] The invention relates to the field of battery sealing and packaging equipment, in particular to an automatic sealing mechanism in the secondary sealing process for batteries. Background technique [0002] Lithium-ion batteries have attracted more and more attention from all walks of life, such as the electric vehicle industry, due to their large capacity, long cycle life, and high cost performance. Lithium-ion batteries are usually composed of positive electrodes, negative electrodes, separators, electrolytes, and the like. The pole pieces are separated by a separator to make a battery core package, and then the battery core is packaged into a plastic or metal casing, injected with electrolyte, and sealed to form a battery. Wherein, the conduction between the battery cell package and the external circuit is through the connection between the pole lug and the pole post connected to the pole piece. [0003] After the primary top side sealing process of...

AI Technical Summary

Problems solved by technology

At present, there is no automatic equipment on the market that can automatically complete this process. Generally, the cut batteries are cut one by one manually, and then the cut batteries are put into the sealed cavity manually to discharge and seal the batteries, and finally the batteries are taken out manually.

Such an operation is likely to cause a short circuit of the battery, which will greatly increase the defective rate of the product and make it impossible to be well controlled. Therefore, the quality and work efficiency of the finished lithium battery cannot be guaranteed, affecting the increase in production efficiency and cost. The safety of production is not well guaranteed

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