二次電池の製造方法およびそれを含む電池パックの製造方法

Japanese Patent JP7293563

B2

The present invention relates to a method for manufacturing a secondary battery, the method comprising: a cap assembly manufacturing step (S10) of disposing a top cap having a top hole on the top side, disposing a safety vent having a vent hole below the top cap, and then disposing a CID filter having a CID hole below the safety vent, thereby manufacturing a cap assembly; an electrode assembly and electrolyte accommodating step (S20) of accommodating the electrode assembly into the can and then injecting an electrolyte to impregnate the electrode assembly therewith; a preliminary battery manufacturing step (S30) which comprises a disposing process of disposing the cap assembly above the can and a coupling process of coupling a positive electrode tab provided in the electrode assembly to a bottom surface of the CID filter of the cap assembly, wherein a distal end of the positive electrode tab closes the CID hole; an activation step (S40) of charging and discharging a preliminary battery; and a gas discharging step (S50) of pressing downward the positive electrode tab in close contact with the CID filter through the CID hole, the vent hole, and the top hole of the cap assembly, thereby opening the CID hole and discharging a gas generated inside the can to the outside through the CID hole, the vent hole, and the top hole.

Son, John Inn
Kim, Ji Eun

JP2021561836A

June 20, 2023

January 19, 2021

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LG Energy Solution Limited

H01M50/578; H01M10/04; H01M50/317; H01M50/333; H01M50/533; H01M50/545; H01M50/548; H01M50/559; H01M50/566

JP2003142606A
JP2006338981A
JP2005285404A

WO2012147782A1

Patent Attorney Corporation RYUKA International Patent Office

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