Soft package battery thermal packaging method

• Main Author: SU PENGBO
• Format: Patent
• Language: Chinese; English
• Published: 27.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a soft package battery thermal packaging method which comprises the following steps: S1, placing a battery cell in an unpackaged aluminum plastic film pit body, buckling an aluminum plastic film along the edge of the pit body, and exposing tab glue of the battery cell out of the aluminum plastic film; s2, top sealing is carried out; s3, performing heat sealing on the outer side of the battery cell to form a preheating seal; s4, injecting an electrolyte; s5, sealing to form an air exhaust seal; s6, activating the battery; and S7, final heat sealing is conducted. Due to the fact that the preheating seal in the step S3 can allow airflow to pass through, air exhaust in the follow-up steps is not affected, the electrolyte can only be separated out along a specific channel due to the existence of the preheating seal, the whole aluminum plastic film is not stained with the electrolyte, the amount of the electrolyte at the position to be subjected to heat sealing is greatly reduced, and the he