Cylindrical battery cell jig

Pouch-compatible cylindrical cell jig with adjustable terminal blocks and elastic components for securing various sizes

This technology features a jig body structure with elastic components and terminal blocks that can be adjusted in position and length to accommodate different cylindrical battery cell sizes, along with a connection interface compatible with existing pouch-type charge/discharge jigs.

Conventional top-and-bottom clamping jigs often suffer from weak holding force, leading to unstable contact with cylindrical battery cells. Furthermore, evaluating cells of different sizes requires frequent jig replacements, which is both cumbersome and costly.

This technology allows for the repositioning of terminal blocks along the main variable holes of the jig body. It utilizes a length-adjustable structure for the first and second cylindrical members, combined with elastic components to securely hold the cell. It also incorporates a plate member for connection to pouch-type jigs and plug-in terminals for easy series/parallel expansion. Suitable for cylindrical cell manufacturing charge/discharge lines and battery evaluation labs, it enables testing of cells ranging from 18650 to large cylindrical formats using a single charger without the need for jig changes.

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Key Features:

• Jig body that houses the battery cell and features main variable holes with vertical long axes on both sides
• A pair of terminal blocks positioned on both sides of the jig body to create an electrical connection path between the battery cell electrodes and the charger
• A first cylindrical member partially housed within a second cylindrical member outside the jig body, allowing for length adjustment based on cell size
• Elastic components that expand according to the battery cell size to press the contact terminals firmly against the cell electrodes

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