Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8092922 | Journal of Cleaner Production | 2018 | 32 Pages |
Abstract
The development of electric vehicles (EVs) is beneficial to a cleaner environment. As the powertrain of EVs, power battery is limited obviously by its fast operating temperature rise and large temperature variation among different parts, so an efficient battery thermal management (BTM) system is desirable. In this paper, a battery thermal management system using kaolin/expanded graphite (EG)/paraffin composite was designed. By contrasting different thermal properties of ternary composites with various proportions, the most suitable composite with 10â¯wt% EG and 10â¯wt% kaolin was selected for the thermal management testing, which has a conductivity of larger than 6â¯W/(m·K) and did not shows any visible leakage after 30â¯minâ¯at 60â¯Â°C. In the thermal management test, the temperature of a single battery was effectively controlled under 45â¯Â°C even at the discharge rate of 4C, and the temperature difference of the single battery was restrained within 5â¯Â°C. Besides, the composite had reduced the temperature of the battery pack by 25.77% at 4C rate, and the temperature difference of the battery pack or each battery in the pack could be greatly controlled once the phase change occurred. In conclusion, the excellent temperature controlling performance of the new phase change material (PCM) was verified in this paper, and the importance of reasonable dosage distribution of PCM in battery pack was put forward.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Renewable Energy, Sustainability and the Environment
Authors
Xuan Zhang, Chenzhen Liu, Zhonghao Rao,