A battery diaphragm manufacturing equipment based on phase separation method

Abstract

The invention relates to the technical field of battery diaphragm production, and discloses a battery diaphragm production equipment based on a phase separation method, including a push rod, the lower end of the push rod is movably connected with a stretching rod, and the surface of the stretching rod is movably connected with a torsion plate, the bottom of the torsion plate is movably connected with a gear, the surface of the gear is movably connected with an engagement plate, the side of the engagement plate away from the gear is movably connected with a pressure plate, and the inside of the pressure plate is movably connected with a pusher, and the stretch rod The inside of the liquid storage bag is movably connected with a liquid storage bag, the inside of the liquid storage bag is movably connected with a compression spring, the surface of the compression spring is movably connected with a roller rod, and the end of the roller rod far away from the compression spring is slidably connected with a deflection plate, and the surface of the deflection plate is movably connected with a spring tube. This is the extrusion work of the diaphragm; with the continuous movement of the push rod, the stretch rod gradually moves to both sides, which is the stretching work of the diaphragm, so the effect of using the same mechanism to reduce the influence of temperature difference on the diaphragm is achieved.

Description

technical field [0001] The invention relates to the technical field of battery diaphragm production, in particular to a battery diaphragm production equipment based on a phase separation method. Background technique [0002] The battery diaphragm refers to a layer of diaphragm material between the positive and negative electrodes of the battery. It is a very critical part of the battery and has a direct impact on battery safety and cost. Its main function is to isolate the positive and negative electrodes and prevent the electrons in the battery from Freely pass through, allowing the ions in the electrolyte to pass freely between the positive and negative electrodes; the preparation methods of battery separators are divided into two types: dry method and wet method, among which wet method is used more. [0003] The existing wet method is to mix liquid hydrocarbons or some small molecular substances with polyolefin resin, heat and melt to form a uniform mixture, then cool dow...

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Problems solved by technology

[0003] The existing wet method is to mix liquid hydrocarbons or some small molecular substances with polyolefin resin, heat and melt to form a uniform mixture, then cool down to separate phases, press to obtain a membrane, and then carry out bidirectional stretching to orient the molecular chain. Finally, the film material is obtained; while the existing wet process equipment uses different mechanisms to process the compression and stretching of the diaphragm, resulting in a large temperature difference between the surfaces of different mechanisms, which will make the diaphragm surface act on it. The diaphragm produces different degrees of shrinkage, which affects the production of the diaphragm, so a battery diaphragm production equipment based on the phase separation method came into being

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