Battery Cell End Cover Assembly With Guide Channel for False Sealing

The patent applies preliminary action by pre-configuring a guide channel in the insulating member before assembly. This guide channel serves as a predetermined escape route that activates only when the sealing member fails, allowing the battery to vent pressure and electrolyte outward rather than causing internal damage. The escape channel is prepared in advance but remains inactive during normal operation, thus preventing false sealing without compromising sealing performance during normal use.

The patent introduces the guide channel as an intermediary structure within the insulating member. This guide channel acts as a mediator that connects the internal battery space to the external environment through the insulating member. When sealing failure occurs, the guide channel provides a visible and accessible pathway for electrolyte and pressure to escape outward, making the sealing failure detectable while the insulating member continues to provide its insulating function. The guide channel serves as both a structural component and a detection indicator.

The patent applies beforehand cushioning by incorporating the guide channel as a pre-prepared safety mechanism within the insulating member. When the sealing member fails under tight sealing conditions, the guide channel immediately activates to provide a controlled escape route for pressure and electrolyte. This prevents the buildup of excessive internal pressure that would otherwise occur with tight sealing, thereby cushioning the safety risk before it can cause damage. The guide channel is positioned to direct the escape flow away from critical components.