Thermal compounding device and thermal compounding method

Abstract

The invention discloses a thermal compounding device and a thermal compounding method. The thermal compounding device comprises a first transmission mechanism, a second transmission mechanism, a heating assembly, force application assemblies and a control mechanism; the first transmission mechanism comprises a first conveying assembly and a first driving assembly, the second transmission mechanismis arranged above the first transmission mechanism in parallel, the second transmission mechanism comprises a second conveying assembly and a second driving assembly, the second transmission mechanism and the first transmission mechanism rotate in opposite directions, a preheating press-fit channel allowing the composite unit to pass through is formed between the second transmission mechanism andthe first transmission mechanism; the heating assembly is used for heating the first conveying assembly and the second conveying assembly; the force application assemblies are arranged on the inner sides of the opposite faces of the first conveying assembly and the second conveying assembly correspondingly; and the control mechanism is electrically connected with the first driving assembly, the second driving assembly, the heating assembly and the force application assemblies correspondingly. According to the thermal compounding device and the thermal compounding method, dislocation and cracking of the composite unit can be avoided, the reject ratio is reduced, and therefore the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a heat compound device and a method thereof. Background technique [0002] The thermal lamination process mainly refers to the process of bonding the positive and negative materials of the lithium battery and the diaphragm (ie, the composite unit) after heating. The traditional thermal lamination process generally adopts multi-roller hot pressing or the lamination process of rolling the lamination unit after passing through the oven. In production practice, uneven hot pressing, uneven distribution of temperature and pressure often occur, thus It causes dislocation of the composite unit and easy cracking of the end face; in addition, since the thermal composite process is thermally composited by the positive and negative electrodes and separators that have been composited, the scrapping of the product in the thermal composite process will result in the scrapping of m...

AI Technical Summary

Problems solved by technology

The traditional thermal lamination process generally adopts multi-roller hot pressing or the lamination process of rolling the lamination unit after passing through the oven. In production practice, uneven hot pressing, uneven distribution of temperature and pressure often occur, thus It causes dislocation of the composite unit and easy cracking of the end face; in addition, since the thermal composite process is thermally composited with the positive and negative electrodes and diaphragms that have been composited, the scrapping of the product in the thermal composite process will result in the scrapping of multiple incoming materials, and the resulting cost very big loss

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