Module to Pack – Thermal Conductive Bonding
PRODUCT DESCRIPTION
Module to Pack – Thermal Conductive Bonding is a solution that uses high thermal conductivity adhesives to bond battery modules to the pack casing. This ensures strong mechanical fixation, efficient heat dissipation, and improved safety in lithium-ion battery systems.
Product details
Key Functions of Thermal Conductive Bonding
✅ Strong Structural Bonding – Secures battery modules firmly within the pack.
✅ Efficient Heat Transfer – Enhances thermal dissipation from the module to the cooling system.
✅ Fire Resistance – Uses flame-retardant adhesives to improve battery safety.
✅ Vibration & Shock Absorption – Enhances durability by reducing mechanical stress.
Commonly Used Materials
🔹 2C PU Thermal Bonding Adhesive – High bonding strength with good thermal conductivity.
🔹 Epoxy-based Adhesives – Provides excellent thermal conductivity and mechanical strength.
🔹 Silicone-based Thermal Adhesives – Flexible, heat-resistant, and vibration-absorbing.
Application
▪ Cell/Module and Water-Cooling Thermal Bonding
Key Requirement
▪ AL & PET bonding strength ≥6 Mpa
▪ Thermal Conductivity≥1 w/mk
▪ Anti-Flammable –> V-0
▪ Good stability, anti-environment and dielectric
Solution
▪ 2C PU Thermal Bonding Adhesive
2C PU Thermal Conductive Bonding
| Property | 1.2W | 2.0W |
| Chemistry | 2C PU | 2C PU |
| Color | Grey | Grey |
| Viscosity (after mixture) |
180000 | 350000 |
| Density | 2.3g/cc | 2.6g/cc |
| Hardness | 50 | 55 |
| Mix Ratio | 1： 1 | 1： 1 |
| Tensile Shear Strength | Al to PET Film >8Mpa | Al to PET Film >6Mpa |
| Volume Resistance | ≥10^13 | ≥10^13 |
| Break Voltage | 15 KV/mm， 1mm thickness | 15 KV/mm， 1mm thickness |
| Dielectric Constant | ＜ 4 （50Hz） | ＜ 4 （50Hz） |
| Thermal Condustivity | 1.2 | 2.0 |
Advantage
✅ Secure Fixation, Enhanced Mechanical Strength
- Firmly holds battery modules inside the pack, preventing movement during vehicle operation or in high-vibration environments.
- Extends battery system lifespan by reducing mechanical stress.
✅ Efficient Heat Dissipation, Maintained Battery Performance
- High thermal conductivity adhesives facilitate heat transfer from battery modules to the cooling system.
- Minimizes overheating risks, extends battery life, and ensures stable performance.
✅ Flame Resistance, Improved Safety
- Many adhesives meet UL94-V0 flame resistance standards.
- Reduces the risk of fire or explosion caused by high temperatures or electrical short circuits.
✅ Vibration Reduction, Increased Battery Stability
- Elastic adhesives absorb vibrations and minimize physical impact on battery cells.
- Crucial for electric vehicles (EVs), battery energy storage systems (BESS), and industrial applications.
✅ Easy Application, Optimized Production Process
- Two-component PU adhesives (2C PU) or epoxy adhesives allow fast application and strong adhesion to aluminum (Al) & PET.
- Supports automated dispensing technology, reducing labor costs and increasing production efficiency.
✅ Resistant to Harsh Environments
- Excellent moisture resistance, heat resistance, and chemical durability.
- Ensures long-lasting battery performance under various environmental conditions.
Product Applications
🚗 Electric Vehicle Batteries (EV, HEV, PHEV) – Bonds battery modules securely to the pack casing while facilitating heat transfer.
⚡ Battery Energy Storage Systems (BESS) – Ensures stability and thermal management for long-term operation.
🛰 Aerospace & Industrial Batteries – Provides reliable bonding and heat dissipation in demanding environments.
