Battery with an easy-reuse structure and method for battery reuse

Reusable battery with multi-port housing for electrolyte replacement without disassembly

This technology features a battery structure and reuse method designed to allow for internal maintenance or electrolyte replenishment without disassembling the housing, achieved by strategically placing multiple ports for electrolyte injection, gas removal, and cleaning fluid circulation.

Secondary batteries often suffer from reduced capacity and power output as electrolytes degrade or deplete and internal gases accumulate over repeated charge/discharge cycles. Previously, reusing these batteries required disassembling or puncturing the housing, which involved complex processes and high capital investment.

This technology utilizes multiple ports penetrating the battery housing, equipped with locking caps. It allows for internal gas extraction to create a vacuum, followed by the injection of cleaning fluids and fresh electrolyte. The ports are positioned on opposite sides or diagonally to maximize fluid flow efficiency. This solution is ideal for EV battery recycling and ESS maintenance, enabling a circular model that extends the remaining life of cells through simple electrolyte replacement rather than disposal.

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Key Features:

• Battery housing featuring multiple penetrating ports surrounding an electrode assembly connected to positive and negative terminals
• Ports for injecting fluid into the electrode assembly and ports for discharging or removing fluid to create an internal vacuum
• Ports positioned on one side of the battery, spaced apart and facing each other relative to the central axis of the housing
• Safety locking mechanism for port caps that prevents accidental opening due to vibration and requires additional force to unlock

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