Revolutionizing Battery Thermal Management for New Energy Vehicles
In the realm of new energy vehicles (NEVs), the battery system, comprised of hundreds of lithium-ion cells arranged in series or parallel configurations, serves as the heart, fulfilling voltage and power requirements vital for operation. However, the intricate battery pack structure poses challenges in thermal transfer between individual cells, leading to thermal gradients within the pack. This uneven temperature distribution across cells, modules, or entire battery packs can alter charging/discharging behaviors and electrochemical performances, exacerbating temperature inconsistencies and, consequently, reducing battery system lifespan, capacity utilization, and even causing system malfunctions. Addressing these issues, maintaining consistent temperatures among batteries emerges as a pivotal challenge for Battery Thermal Management Systems (BTMS) to mitigate the "wooden war effect."
Introducing Our Cutting-Edge BTMS
Recognizing the need for robust thermal management, especially under extreme conditions like high-rate charging/discharging and temperature extremes, our BTMS offers a comprehensive solution tailored for industrial adoption. With batteries featuring fixed shapes and geometries, our system ensures optimal operational temperatures, significantly impacting cost and performance through the choice of heat transfer media – be it air, liquids, or Phase Change Materials (PCM).
Air-Cooling: A Proven, Efficient Approach
Among various cooling strategies, air-cooling stands out for its simplicity, lightweight design, and ease of maintenance, making it an economical, reliable choice for NEV BTMS. Our air-cooling solutions encompass both natural and forced convection methods. While natural convection, relying on spontaneous air movement, has proven ineffective, forced convection, enhanced by air pumps and evaporators, demonstrates superior heat exchange efficiency. This has led to its widespread adoption in automotive applications.
Passive vs. Active Air Convection: Tailored for All Climates
Passive systems draw air from the ambient or vehicle cabin, with performance heavily reliant on environmental temperatures. In contrast, our active systems harness pre-conditioned air from HVAC heaters or evaporators, offering superior thermal control under extreme conditions, be it sub-freezing or above 45°C temperatures.
Innovative Air Duct Design for Enhanced Efficiency
Beyond convection types, the air duct structure plays a crucial role in BTMS efficiency. Our offerings include parallel and serial ventilation configurations. Analysis reveals that parallel ventilation BTMS achieves lower peak temperatures and more uniform temperature distributions compared to serial ventilation. Furthermore, acknowledging the geometry of cylindrical batteries, we introduce a novel axial air-cooling system. This design maximizes space utilization within the battery pack, enabling higher power densities for NEVs equipped with cylindrical batteries.
In conclusion, our advanced BTMS represents a pivotal step forward in ensuring optimal battery performance and longevity for NEVs. By leveraging tailored air-cooling technologies and innovative duct designs, we not only mitigate thermal gradients but also enhance overall system reliability and efficiency. Partner with us to future-proof your NEV's thermal management and unlock unparalleled performance and sustainability.
