Close-up of industrial machinery in a manufacturing setting. The machine features metal components and blue tubing. Theres a spool of blue tesa tape material in the background, and a label on the machine reads “Mikan Technic.”.

Reliable and automated sealing of EV batteries

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Innovative solutions for battery sealing in electric vehicles

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Automotive

Battery packs represent the heart of every vehicle that is powered electrically. One of the central challenges for battery packs is the efficient and reliable sealing to ensure their performance and safety. At tesa, we have developed a product series for the reliable and automated sealing of batteries with adhesive tapes.

tesa® ACX^plus Box Seal provides a watertight seal between the battery pack and lid to protect the interior against water ingress and corrosion and is still reopenable for rework or service.

tesa® ACX^plus Box Seal series

01tesa® ACX^plus 76730

Acrylic foam core with PU passivation on open side
2.8 mm thickness
Fills gaps from 0.9 mm to 2 mm
Suitable for sealing of smaller boxes or ECUs

A 3D illustration of a layered material, showing a top blue sheet of tesa tape, a middle black layer with bubble-like texture, and a flat gray base underneath. The top layer of tesa tape is partially peeled back. (This text has been generated by AI)

02tesa® ACX^plus 76754

Acrylic foam core with PU passivation on open side
5.4 mm thickness
Fills gaps from 1.7 mm to 4.1 mm
Suitable for sealing of battery boxes

tesa® ACX^plus Box Seal series

Illustration of a layered structure showing a blue flexible top layer, a black foam-like middle layer with bubble texture, and a solid gray base layer. The blue tesa tape layer is partially peeled away, revealing the black tesa tape layer beneath. (This text has been generated by AI)

- Can be attached to battery packs with lids and to battery packs that are directly mounted to the underbody
- 100% sealing with different gap dimensions from 0.9 to 4.1 mm (depending on product thickness)
- Does not require any curing time and can be applied easily and automatically
- Health and safety risks for users are minimized
- Battery pack can be reopened during production or after end-of-line testing for reworking