Choosing Between Adhesives or Mechanical Fastening Methods for Electric Vehicle Batteries

Posted on 2/25/2020 10:44:00 AM By ASC

There’s far more to EV and hybrid batteries than their six cell and thin-walled 12 volt forerunners which start a gas-driven car with a brief bolt of energy before handing over to fuel and spark-ignited internal combustion. EV vehicles rely solely on the battery to keep going for the long haul, and adhesives are replacing the nuts and bolts used in gas-drive batteries to help make that haul between charges as long as possible.

The battery required for the EV differs completely from the gas-drive one and the two are not inter-replaceable. EV batteries are driven by multiple cells connected in series and encased in thick walls, with pack voltages at anywhere from 100 to 200V in hybrids, and 400 to 800 in electric vehicles, and they must have as large an energy storage capacity as possible to extend the distance covered before recharging is necessary.

This calls for the use of different designs and different materials in order for the assembled battery to be as efficient, but also as light, as possible. This is where adhesives have stepped in, taking over from the nuts and bolts used in the past on gas-powered vehicles, because they are proving to be better suited to the assembly of the new-style batteries. They are lighter than the bolts and more versatile and stronger in bonding both single and dissimilar substrates, as well as able to provide better gap control.

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