Flexible Solutions

4 High Performance Thermal Barrier Materials for EV Battery

Posted by Katie Sullivan

Apr 26, 2021 11:16:02 AM

Thermal Runaway Propagation Prevention with Thermal Barrier Materials

Hybrid and battery electric vehicles that use lithium-ion cells require that these cells are maintained at specific ambient temperatures. "Thermal runaway" occurs as a result of the rapid rise in temperature within one of the battery cells. One of the greatest challenges for battery design engineers is to manage heat. For this reason, batteries are designed with thermal management systems that provide different levels of protection, including cell-to-cell, module-to-module, and pack level.

Marian provides custom flexible die cut solutions that are incorporated into battery design at the cell, module and pack level to aid with thermal management. These die-cut parts are made with high temperature resistant materials (also known as flame barrier materials) that are designed to offer thermal insulation to delay the onset of thermal runaway.

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Topics: Thermal Management, EV, HEV, battery, flame barrier

4 Insulating Materials for use in EV Batteries

Posted by Katie Sullivan

Aug 27, 2019 9:00:00 AM

Improvements are being made to the lithium-ion batteries used in electric vehicles. Car makers are developing more powerful lithium-ion batteries that have increased range and charge more rapidly. Along with these improvements, enhancing safety is becoming increasingly urgent for electric vehicle development.  As mentioned in our previous blog post, 11 Considerations when Selecting Thermal Interface Materials for Electric Vehicle Li-Ion Batteries, Li-ion batteries produce a significant amount of heat while in use and while charging. Along with the use of thermal management materials, placing protective engineered flame retardant insulating materials between the components of the battery cell, module, and pack can offer additional thermal and electrical insulating protection. However, adding such materials can be challenging due to space and weight constraints.

In this post we outline four materials that can enhance the safety of lithium-ion batteries used in electric vehicles.  Some shared characteristics of these four materials are listed below. 

  • ultra-thin
  • light weight
  • electrically and thermally insulating
  • flame retardant
  • can be die-cut and laminated with PSA

Read further for additional detail about each material.

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Topics: Thermal Management, EV, HEV, Material selection, Insulators

PORON® EVExtend 4701-43RL, 43HBF For Use In EV/HEV Li-ion Pouch Cell Batteries

Posted by Katie Sullivan

May 29, 2019 1:01:15 PM

PORON® EVExtend 4701-43RL, and 4701-43HBF

Our valued material supplier, Rogers Corporation, has released PORON® EVExtend 4701-43RL polyurethane foam material. This is an ideal battery pad material for EV/HEV li-ion pouch cell batteries. The EXExtend 4701-43HBF offers an increased flammability rating of HBF, or HF1 (product dependant). 

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Topics: Foams, PORON Foam, EV, HEV, Material selection

11 Considerations when Selecting Thermal Interface Materials for Electric Vehicle Li-ion Battery

Posted by Katie Sullivan

Mar 22, 2019 8:06:17 AM

Currently, lithium-ion (li-ion) batteries are the most common type of battery used to power electric vehicles. Today's market is demanding that batteries charge faster and last longer. Because li-ion batteries produce significant heat when in use and charging, thermal management is critical.  Excessive heat can cause irreparable damage to the battery. 

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Topics: Thermal Management, EV, HEV, battery, Material selection