Key Findings: Graphite Essential for NEV Battery Thermal Management, Sheen Technology’s Graphene Thermal Pads Reduce Peak Temperatures by up to 35%
Efficient thermal management is an exceptionally critical factor in maximizing the performance, safety, and lifespan of New Energy Vehicle (NEV) batteries. In this context, graphite has emerged as a material with outstanding thermal conductivity properties, proven to effectively homogenize hot spots within battery packs and reduce peak temperatures by up to 35%. To address this challenge, Sheen Technology is offering graphene thermal pads characterized by high vertical thermal conductivity and low thermal resistance, contributing significantly to lightweight battery designs and optimized cooling performance.
Technical & Business Details
- Graphite’s Thermal Conductivity: Graphite is an anisotropic material exhibiting extremely high thermal conductivity, particularly in-plane (which can reach several thousand W/m·K). This property enables rapid heat spreading from battery cells, preventing the formation of localized hot spots. This mechanism is crucial for preventing battery overheating and mitigating risks of performance degradation, premature aging, and even thermal runaway.
- Sheen Technology’s Graphene Thermal Pads: The graphene thermal pads offered by Sheen Technology possess properties superior to conventional graphite. Through a proprietary manufacturing process, the thermally conductive filler (graphene) is vertically oriented, dramatically enhancing thermal conductivity in the thickness (z-axis) direction. Additionally, they exhibit high compressibility, allowing them to conform closely to complex battery module surfaces and minimize thermal resistance caused by air gaps.
- Contribution to Lightweighting: Highly efficient thermal pads enable the design of smaller and lighter cooling systems, thereby contributing to extended range and improved energy efficiency for the entire NEV.
Background & Industry Context
The rapid expansion of the New Energy Vehicle market necessitates advancements in high energy density battery technologies and fast-charging capabilities. However, this leads to increased heat generation within battery packs, making effective thermal management the paramount challenge for battery safety and longevity. Thermal runaway can be a severe cause of EV accidents, compelling automotive manufacturers to seek highly reliable thermal management solutions. Thermal Interface Materials (TIMs) are key components in addressing this challenge.
Strategic Significance & Outlook
Graphite and graphene-based thermal pads are expected to expand their applications beyond NEV batteries to all sectors where thermal management is critical, including data centers, 5G communication equipment, high-performance computing, and power electronics. Innovative material development by companies like Sheen Technology will enable further advancements in these technologies, leading to safer and higher-performing products. From the perspective of adhesives and sealants, the demand for high-temperature resistant and vibration-resistant adhesives to securely fix these high-performance TIMs within battery packs and ensure long-term reliability will significantly increase.
Source: https://www.sheenthermal.com/graphite-heat-dissipation-for-new-energy-vehicle-batteries.html
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