Experimental investigation on a Fiber Carbon-nano Laminated heater to improve LiFePO4 battery performances under low-temperature conditions
Year: 2024
Type: conference-paper
Abstract: LiFePO4 batteries play a vital role in electric vehicles (EVs). However, LiFePO4 batteries are significantly affected by low temperatures. In this research, a lightweight, efficient, low-voltage, and safe Fiber Carbon-nano Laminated (FCL) heater for LiFePO4 batteries is designed, developed, and experimentally validated. Experiments are conducted to heat LiFePO4 batteries under -20°C and compared with traditional Positive Temperature Coefficient (PTC) heaters. The results demonstrate that the FCL heater exhibits stable heating performance with uniform temperature distribution within the heating area. Heating for 45 minutes can raise the temperature of a LiFePO4 battery module from -15°C to 0°C, consuming 128.2 Wꞏh, approximately 2.7% of the battery module’s capacity. Compared to traditional PTC heaters, the FCL heater shows significant advantages: a 65.6% reduction in supplied voltage, a 59% decrease in weight, a 21.4% increase in power, a 3.5% decrease in energy consumption, a 26.0% improvement in temperature rise efficiency, and a 195% increase in power-to-weight ratio.
Authors: Chao Tang, Peiyu Yuan, Zhixiong Cen, Zhenghan Yin, Yang Yan, Zonghong Xie
Institution: Sun Yat-sen University
Language: English
Subfield: Automotive Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4401649763