Valve unit and method for filling electrolyte into battery cell pouch housings

Abstract

The present invention relates to a valve unit (10) configured for electrolyte injection, comprising a fluid port (11) for connecting to an electrolyte source, a joint portion (12) including at least two surfaces (21, 22) configured to connect to at least one layer of a battery cell housing (101), and at least one fluid channel (13) protruding through the fluid port (11) and the joint portion (12), wherein the fluid channel (13) is repeatedly openable and closable, and the fluid port (11) includes a locking portion (14) on its outer surface. Furthermore, the present invention relates to a manufactured battery cell (110) and a method (50).

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