Battery cell winding device utilizing guiding property and pressurizing property of airflow

Abstract

The invention relates to the technical field of battery cell winding, and discloses a battery cell winding device utilizing the guiding property and the pressurizing property of an airflow, which comprises a shell. A gas ejector pipe is fixedly connected to the interior of the shell; a gas ejector mechanism is fixedly connected in the gas ejector pipe; a film outlet pipeline is fixedly connected in the shell and located at two sides of the gas ejector pipe; a guide plate is movably connected in the film outlet pipeline; the end, away from the shell, of the film outlet pipeline is movably connected with a film rolling mechanism; the film rolling mechanism comprises a support frame; the upper portion of the support frame is fixedly connected with a sliding rail; a connecting rod is slidablyconnected to the surface of the sliding rail; the diaphragm between the surfaces of the battery cells is suspended in the film outlet pipeline. As the vent pipe in the gas ejector mechanism is designed to be stepped, the end close to the gas ejector pipe is a narrow end, and the generated airflow pressure is large, so that when a certain position of the diaphragm is continuously blown by the airflow, the diaphragm can be cut, and the effect of cutting off the diaphragm without generating burrs is achieved.

Description

technical field [0001] The invention relates to the technical field of battery cell winding, in particular to a cell winding device utilizing airflow guidance and pressurization. Background technique [0002] In the battery production process, it is necessary to wind the battery core. The separator paper used for winding the battery core is a polyethylene film. Its function in the lithium-ion battery is to separate the positive and negative materials. The quality of the separator paper directly affects Battery safety performance and capacity, etc. [0003] The traditional winding method is to unload the battery after winding the battery on the winding needle. When unloading, the winding needle needs to be pulled out from the battery to facilitate the unloading mechanism to remove the battery. If the operation is not done properly, the wound film will be damaged. In addition, when the winding work is completed, the diaphragm needs to be cut off. When the traditional blade cu...

AI Technical Summary

Problems solved by technology

[0003] The traditional winding method is to unload the battery after winding the battery on the winding needle. When unloading, the winding needle needs to be pulled out from the battery to facilitate the unloading mechanism to remove the battery. If the operation is not done properly, the wound film will be damaged. In addition, when the winding work is completed, the diaphragm needs to be cut off. When the traditional blade cuts the diaphragm, it will easily cause burrs at the end of the diaphragm and affect the winding quality of the battery. Therefore, a battery winding device that utilizes airflow guidance and pressurization came into being

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