Pack
Battery Pack Materials
An EV battery pack must simultaneously meet requirements for structural rigidity, safety, thermal management, and lightweight design.
LG Chem offers a comprehensive battery pack material portfolio—including engineering plastics, adhesives, and safety materials—providing a Total Battery Pack Material Solution optimized for next-generation EVs and large-scale ESS.
Key Products
Thermally Conductive Adhesives
Adhesive Solution for Achieving Battery Structural Stability and Thermal Management
Overview
EV batteries must effectively control heat generated by high output and long operating hours.
LG Chem’s Thermally Conductive Adhesives help secure battery cells without additional structural components while efficiently dissipating heat generated from the cells. They also electrically isolate internal components within the battery pack, contributing to short-circuit prevention.
Why LG Chem’s Thermally Conductive Adhesives?
Enhanced Thermal Performance
• Particle dispersion and surface treatment technology deliver high thermal conductivity and lightweight properties simultaneously
Excellent Cell Protection
• Strong cell fixation combined with cushioning properties to protect against external impact
Ease of Application
• Easy control of dispensing and flow during application; curing speed adjustable to fit customer processes and designs
Key Features
Bumper Module
| Property | Details |
|---|---|
| Applications | |
| Type | |
| Features |
Frequently Asked Questions
1. What advantages do Thermally Conductive Adhesives offer compared to conventional structures?
Thermally Conductive Adhesives eliminate the need for separate structural components, reducing weight while ensuring heat dissipation and insulation for improved safety and performance.
2. Which battery cell types can Thermally Conductive Adhesives be applied to?
Applicable to all major cell types—cylindrical, prismatic, and pouch.
3. What differentiates LG Chem’s Thermally Conductive Adhesives?
Proprietary particle design and dispersion technology deliver high thermal conductivity and cost competitiveness, while ongoing research focuses on NVH* improvement and sustainability.
*Noise, Vibration, Harshness
LG Chem’s thermally conductive adhesives can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM
Lightweight and heat-dissipating adhesion for high-power battery modules
Aerospace
Stable thermal management for long-duration power systems
Micromobility
Heat dissipation and impact protection for small batteries
Mass Transportation
Ensuring thermal stability for large-capacity batteries in electric buses and rail vehicles
Flame Barrier Materials (FBM)
FBM
High-Performance Flame Barrier Materials for Battery Safety
Overview
EV and ESS batteries can experience thermal runaway caused by impact, overheating, or damage, which may lead to fire or explosion. LG Chem’s Flame Barrier Material (FBM) delays heat transfer during a fire through its heat absorption function and provides excellent insulation and flame-blocking performance using special flame retardants and heat absorbers.
FBM is available in two types: Foam (FBF, Flame Barrier Foam) and Sheet (FBS, Flame Barrier Sheet), and can be applied to various battery structures—cells, modules, and packs—to enhance safety.
Why LG Chem’s FBM?
Enhanced Battery Safety
- • Absorbs heat and blocks flames to suppress thermal runaway spread
- • Delays heat propagation to adjacent cells, reducing overall fire risk
Excellent Flame Retardancy & Insulation
- • Combines silicone resin-based flame retardancy with special heat absorbers
- • Maintains structural stability even in high-temperature environments
Flexible Design Application
- • Applicable to pack covers, cell covers, busbar covers, vent hole covers
- • Thin design for easy attachment without interference; supports curved surfaces and hole processing
Cost Efficiency
- • Customizable shapes for optimized design
- • Delivers equal or superior performance compared to conventional PU/silicone at competitive cost
Key Products & Features
Bumper Module
FBF (Flame Barrier Foam)
| Property | Details |
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| Applications | |
| Customer Value | |
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FBS (Flame Barrier Sheet)
| Property | Details |
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| Applications | |
| Customer Value | |
| Features |
Frequently Asked Questions
1. How is FBM different from conventional flame-retardant materials?
Unlike traditional flame-retardant plastics that only delay ignition, FBM suppresses fire spread through heat absorption and ceramicization, improving overall battery system safety.
2. Which battery structures can it be applied to?
Compatible with prismatic and pouch cells; applicable across cells, modules, and packs.
3. What’s the difference between Foam and Sheet?
Foam (FBF) is optimized for compressibility and heat-blocking between cells, while Sheet (FBS) is applied at module and pack level to prevent flame leakage and heat spread.
LG Chem’s FBM can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM
Enhancing thermal runaway safety for high-power battery packs
Aerospace
Blocking fire in aircraft ESS and auxiliary power systems
Micromobility
Suppressing fire propagation between small battery cells
Mass Transportation
Providing flame-blocking and safety reinforcement for battery systems in electric buses and rail vehicles
Super Flame Barrier (SFB) Material
SFB
Battery Protection Material That Delays Fire Spread to Ensure Passenger Safety
Overview
EV batteries can experience thermal runaway caused by impact, damage, or overheating, which directly leads to fire propagation and passenger safety risks. Conventional flame-retardant plastics only delay flames to a certain extent, limiting their ability to provide fundamental safety.
LG Chem’s Super Flame Barrier (SFB) materials are developed using various engineering resins such as mPPO, PA, and PPS. In the event of a fire, the surface of these materials undergoes ceramification, forming a ceramic-like layer that blocks heat and flame spread. This provides drivers and passengers with a critical golden time to evacuate the vehicle safely.
Why LG Chem’s Super Flame Barrier Materials?
Enhanced Passenger Safety
- • Blocks flame spread
- • Provides critical evacuation time for driver and passengers
Outstanding Flame and Thermal Insulation Performance
- • Withstands extreme heat of 1,000–1,200°C for over 10 minutes
- • Maintains stable performance even under severe tests such as Torch & Grit
Battery Reliability Assurance
- • Applicable to battery pack cover, Busbar, ICB cover, end plate
- • Compatible with cylindrical, prismatic, and pouch cell structures
Customer-Tailored Portfolio
• Optimal material selection based on customer requirements
Product Type
Bumper Module
Flame Barrier (FB2106F, FB2206F)
| Property | Details |
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| Applications | |
| Customer Value | |
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Super Flame Barrier
| Property | Details |
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| Customer Value | |
| Performance |
Frequently Asked Questions
1. What makes LG Chem’s Super Flame Barrier materials different from conventional flame-retardant plastics?
Traditional flame-retardant plastics primarily work by delaying or reducing ignition when exposed to flames. In other words, their main function is to slow down the ignition process. While these materials can withstand flames for a certain period, they do not prevent the spread of fire.
In contrast, Super Flame Barrier materials operate in a more advanced way. When a fire occurs, the material undergoes ceramification, forming a ceramic-like layer that fundamentally blocks the lateral spread of heat and flames.
In short, it goes beyond simply delaying ignition—it actively prevents fire from spreading.
This makes Super Flame Barrier materials deliver a higher level of fire safety compared to conventional flame-retardant plastics, making them ideal for high-risk environments where heat-blocking performance and structural integrity are critical.
2. Which battery cell formats can it be applied to?
It is compatible with all EV battery packs using cylindrical, prismatic, and pouch cells, and can be applied to key components such as pack covers, busbars, ICB covers, and end plates.
3. What is the actual test performance?
In Torch tests, it withstands temperatures up to 1,200°C for more than 600 seconds while maintaining a No Hole condition. In the Torch & Grit Test, it endures 1,200°C for 10 repeated cycles without performance loss. The latest materials can even withstand flames of 1,500°C for over 10 minutes.
LG Chem’s Super Flame Barrier Materials can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM
Enhances battery fire safety in high-temperature and impact conditions
Aerospace
Ensures stable operation for extended periods in high-temperature environments
Micromobility
Suppresses fire spread in small battery modules
Mass Transportation
Secures battery fire safety for electric buses and rail vehicles
Nexula® – Aerogel Thermal Barrier
Nexula®
Next-Generation Aerogel Solution to Block Thermal Runaway Propagation
Overview
EV and ESS batteries can experience thermal runaway due to impact, overheating, or damage, which may lead to rapid fire spread—posing serious risks to passenger safety and assets.
LG Chem’s Nexula® features an aerogel structure where nano-sized silica particles are organically connected, delivering exceptional thermal insulation through countless micro-pores. Nexula® can be applied across various areas inside the battery pack—Cell to Cell, Module to Module, Module Cover, and Pack Cover—to effectively block or delay thermal runaway propagation.
Why LG Chem’s Nexula®?
Outstanding Thermal Insulation Performance
- • Aerogel-based ultra-high-performance insulation structure
- • Fire blocking and delay during thermal runaway to protect passengers and assets
Flexible Application
- • Applicable across all pack areas: Cell to Cell, Module to Module, Covers
- • Applicable to prismatic and pouch cell types, as well as module and pack structures
Safety and Reliability
- • Suppresses thermal propagation to enhance EV and ESS safety
- • Customized solutions based on customer requirements
Product Type
Bumper Module
| Product | Features |
|---|---|
| Nexula® P70 | |
| Nexula® S70 / S40 |
Frequently Asked Questions
1. What is the role of Nexula®?
Nexula® is an aerogel-based ultra-insulation material that delays or blocks the spread of heat and flames to adjacent cells when thermal runaway occurs inside the battery. This provides critical evacuation time and significantly improves overall system safety.
2. Which battery types can it be applied to?
Applicable to prismatic and pouch cell types, as well as module and pack structures.
3. How are the product lines differentiated?
Nexula® P70 offers maximized thermal insulation performance, while S70/S40 provide combined thermal blocking and surface pressure capabilities for tailored customer needs.
LG Chem’s Nexula® can contribute to safety across industries beyond EV and ESS batteries.
Beyond EV
UAM
Fire suppression for high-power batteries in lightweight aircraft
Aerospace
Preventing thermal runaway propagation in aircraft auxiliary power systems
Micromobility
Suppressing module fires in small batteries
Mass Transportation
Enhancing battery system safety for electric buses and rail vehicles
Engineering Materials
Why LG Chem’s Engineering Materials?
Enhanced Battery Safety
- • Minimizes fire and electrical risks with UL94 V-0 flame-retardant rating and CTI(Comparative Tracking Index) performance
- • Protects electronic systems through EMI shielding and thermal shock stability
Lightweight Design & Structural Integrity
- • Reduces battery pack weight with high-strength lightweight materials, improving driving range
- • High-impact and high-rigidity properties for external shock resistance
Precision Assembly & Dimensional Stability
- • Maintains shape under high-temperature and high-humidity conditions for accurate component assembly
- • Compatible with various molding processes, ensuring design flexibility
Sustainability & Process Efficiency
- • PFAS-free and halogen-free flame-retardant materials for environmental compliance
- • Injection molding and hybrid molding for improved productivity
Expanded Design Freedom
- • Enables weight reduction compared to mechanical fastening
- • Applicable to cylindrical, prismatic, and pouch cells, as well as complex structures
Key Features & Functions
Bumper Module
Cylindrical Cell Gasket
| Property | Details |
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| Products | |
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Cylindrical Cell Frame
| Property | Details |
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| Products | |
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Busbar Plate Ass’y / End Plate
| Property | Details |
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| Products | |
| Features |
Busbar Housing
| Property | Details |
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| Products | |
| Features |
Battery Module Cover/Housing
| Property | Details |
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| Products | |
| Features |
Battery Pack Cover
| Property | Details |
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| Products | |
| Features |
HV Connector
| Property | Details |
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| Products | |
| Features |
ICCU Cover
| Property | Details |
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| Products | |
| Features |
Frequently Asked Questions
1. How do we enhance EV battery safety with LG Chem’s engineering materials?
We minimize fire and electrical risks through UL94 V-0 flame-retardant rating, CTI(Comparative Tracking Index) performance, EMI shielding, and thermal shock stability.
2. How do we contribute to EV efficiency?
We replace metal with lightweight materials to reduce battery pack weight and extend driving range, while our high-precision molding properties improve assembly efficiency.
3. How do our battery engineering materials support OEM sustainability initiatives?
They provide PFAS-free and halogen-free flame-retardant materials and optimize production processes to help OEMs achieve their ESG goals.
LG Chem’s Engineering Materials can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM & Aerospace
Battery modules for aircraft requiring high-voltage systems and thermal stability
Energy Storage Systems (ESS)
Safety and heat-resistant materials for large battery packs
Industrial Equipment
Battery systems where reliability is critical in high-temperature, high-humidity, and high-voltage environments
Structural Adhesives
High-Reliability Structural Adhesives for EV Batteries
Overview
EV batteries consist of numerous components and various materials, requiring stable structural bonding even under vibration, impact, and thermal conditions. Traditional mechanical fastening methods pose challenges such as increased weight, design limitations, and durability constraints.
LG Chem’s Structural Adhesives, based on advanced automotive body bonding technology, secure various hard-to-bond battery components. This enables lightweight vehicle design, robust durability, and improved process efficiency.
Why LG Chem’s Structural Adhesives?
Reliable Bonding for Hard-to-Bond Battery Components
- • Adhesives for dissimilar materials such as plastics and metals
- • Maintains strong adhesion under vibration and impact
Curing Properties Optimized for Customer Processes
- • Stability without degrading or decomposing other materials
- • Product library offering delayed or accelerated curing based on temperature and process conditions
Special Grades for Recyclability, Low Density, and Thermal Properties
- • Adhesives with foaming capability for recyclability
- • Functional adhesives using low-density and heat-dissipating particles
Key Features
Bumper Module
| Property | Details | |
|---|---|---|
| Applications | ||
| Type | ||
| Features |
Frequently Asked Questions
1. What advantages do Structural Adhesives offer compared to mechanical fastening?
LG Chem's Structural Adhesives enable weight reduction compared to screws and bolts while maintaining strong adhesion under vibration and impact. They also increase design flexibility, allowing component integration and improved process efficiency.
2. Which battery cell types can they be applied to?
Applicable to all major cell structures—cylindrical, prismatic, pouch—and various components within modules and packs.
3. What differentiates LG Chem’s Structural Adhesives?
A diverse portfolio including epoxy, polyurethane, UV-curable, and acrylic-epoxy hybrids, delivering insulation, durability, and process efficiency.
LG Chem’s structural adhesives can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM
High-durability bonding and insulation materials for lightweight aircraft
Aerospace
Stable bonding of power modules under high-temperature and impact conditions
Micromobility
Enhanced structural stability for small battery modules
Mass Transportation
Durability and safety reinforcement for battery packs in electric buses and rail vehicles
Potting Resin
Reliable Protection Solution for Enhanced Battery Safety
Overview
EV and ESS batteries are directly exposed to external impact, moisture, and ignition sources. If left unprotected, these risks can lead to cell damage and serious safety incidents.
LG Chem’s Potting Materials are applied to battery modules and packs to protect cells from external shocks, moisture, and ignition factors. Designed for lightweight applications, they feature foaming capability and low-density fillers. Since they are applied directly to battery cells and electrical components, they offer low thermal conductivity and high electrical insulation for enhanced safety.
Why LG Chem’s Potting Resin?
Enhanced Battery Safety
• Protects battery cells from external impact, moisture, and ignition sources
Uniform Insulation Properties
• Optimized particle dispersion within the binder ensures consistent insulation and improved battery safety
Lightweight Design
• Achieves low density and flow characteristics through optimized filler and binder formulation
Curing Properties Optimized for Customer Processes
• Product library offering delayed or accelerated curing based on temperature and process requirements
Key Features
Bumper Module
| Property | Details |
|---|---|
| Applications | |
| Resin Type | |
| Key Features |
Frequently Asked Questions
1. What is the role of Potting Resin?
It encapsulates battery cells and components with resin to protect against impact, moisture, and ignition sources, while enhancing insulation and durability for improved safety.
2. Which cell types can it be applied to?
Applicable to all major cell structures—cylindrical, prismatic, and pouch—as well as various components within modules and packs.
3. What differentiates LG Chem’s Potting Resin?
Lightweight design through foaming and low-density filler technology, low thermal conductivity with high insulation, and a diverse resin base lineup (silicone, urethane, epoxy) to deliver customized solutions for customers.
LG Chem’s Potting Resin can extend beyond EV into a wide range of mobility sectors.
Beyond EV
UAM
Impact and moisture protection for lightweight battery modules
Aerospace
Stable ESS operation in high-temperature environments
Micromobility
Enhanced safety for small battery modules
Mass Transportation
Protection for battery modules in electric buses and rail vehicles