The battery is the heart of an electric vehicle.


Posted 22 Nov 2022 16:45 | 27 views

To advance the evolution of electrification, it is key to develop reliable materials that are able to protect the EV battery from thermal runaway and environmental conditions.

The battery is the heart of an electric vehicle. Therefore, it is vital to find a high performing potting material that can control and extinguish any thermal event that may occur within the battery to maintain safety for the end user and overall battery success.

Our wide product portfolio has many epoxy resins and polyurethanes to solve these EV challenges. 

 

PRODUCT SPOTLIGHT: S7253-01

Two-component UL 94 V-0 polyurethane potting material. Low weight loss at elevated temperature suggests this product is suitable for applications that can reach up to 125°C.
 
CUSTOM EPOXY & POLYURETHANE COMPOUNDS ENCAPSULANTS
The perfect battery pack encapsulant or potting compound depends on your application’s needs.
  • General Industrial Applications

  • Power Tools

  • Electric Vehicle Batteries

Electrical vehicle batteries face unique challenges: managing thermal conductivity, mitigating thermal runaway propagation, and performing in extreme temperatures (high and low).

 

 

                            

CASE STUDY: Mitigating Thermal Runaway 

The challenge in this study was to find a material to mitigate thermal runaway and it’s propagation within battery cells. The solution was a potting compound that stops propagation.       
                                                                      

Safety is at the forefront of concerns when testing an e-bike or LEV battery pack for use in everyday life.
The challenge in this study was to find a material to mitigate thermal runaway and it’s propagationwithin battery cells. The solution was the use of a potting compound that stops propagation.

 

 

PRODUCT PERFORMANCE
Epic S7253-01 is formulated with a unique combination of both mineral and non-halogenated flame retardants, with an emphasis on particle size distribution to create a protective firewall between battery cells. Results of a laboratory induced thermal runaway event showed there was no  propagation. However, the failure criteria is not more than six cells or the cells immediately surrounding the initiation cell.

Summary of Customer’s Results & Benefits:
➧ Provided propagation mitigation needed
➧ Excellent thermal conductivity of 0.78 W/mK
➧ Workable viscosity
➧ Adjustable reactivity
➧ Convenient mix ratio for high volume production
➧ Safe and high quality end product 

CASE STUDY Ducument Click!


BATTERY PACK POTTING COMPOUND ADVANTAGES :

  • High thermal stability and UL-Certification

  • Suitable for applications requiring compliance to UL-1973

  • Excellent adhesion

  • Protection from mechanical shock and vibration

  • Prevents damage from moisture and chemical exposure

  • Good electrical insulation


 BATTERY PACK POTTING AND ENCAPSULATING COMPOUND INCLUDE :

Epic S7253-01       UL 94 V-0 Polyurethane Potting and Encapsulating Compound        

      Is a two component, UL 94 V-0 recognized polyurethane compound designed for electronic applications requiring encapsulation. The low weight loss of S7253-01 at elevated temperature suggests this product is suitable for applications that can reach up to 125°C. This material is currently utilized in a variety of applications, including automotive, that require thermal cycling between -40°C and 85°C. It features good thermal conductivity along with good adhesion to various metals and plastics.

Epic RM2018         Polyurethane Potting Compound for Battery Management Systems 

Is a two-component polyurethane potting and encapsulating compound that carries a UL94 V-0 flammability rating. RM2018 is designed for potting DC/DC converters, GPS sensors, and other electronic devices that require flexibility over a wide temperature range. 

EPIC RM17A5302   Polyurethane Potting Compound for EV Batteries                          

Is a two component polyurethane potting compound designed as a soft thixotropic material for holding large electrical components in place.

EPIC S7242           Epoxy Potting & Casting Material for EV Batteries                         

Is a two component epoxy potting and casting compound. This product features a low coefficient of thermal expansion, can be hand or meter-mix dispensed, and is non-abrasive.

Epic S7475            Battery Management System Applications                                   

Is a two-component polyurethane compound for potting electronic control modules and a wide variety of electronic devices. Low mixed viscosity allows the material to flow into intricate areas under printed circuit boards and other tight tolerance areas. 

Epic S7527            Potting Material with Long Gel Time                                            

Is a two component polyurethane potting compound formulated for applications requiring thermal stability at high temperatures. S7527 carries a UL 94V-0 flame rating and a 150°C RTI rating per UL 746. Epic S7527 is excellent for potting and encapsulating sensitive electronics which will be exposed to harsh environments.

EPIC S7553           Polyurethane Compound for Electronic Potting Applications            

Is a two component polyurethane material designed for electronic potting applications. S7553 is a recognized UL 94V0 flame retardant system.

EPIC S7593           Polyurethane Encapsulant for EV Batteries Applications                 

Is a two component polyurethane encapsulant that is thermally conductivity and self-leveling. S7593 is designed to have a high thermal conductivity, 94-V0 at 1/2" and long pot life for ease of manufacturing. S7593 will require a unique process and mixing equipment for use. 

source : epic resin 

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