Open Access
ARTICLE
RESEARCH ON A NOVEL CONCEPT OF SELF-FORMING AIR COOLING BATTERY RACK
Mingjie Zhanga
, Kai Yanga, Le Qinb, Xiaole Yaob, Qian Liub, Xing Jub,*
a State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems(China Electric Power Research Institute)
b Key Laboratory of Power Station Energy Transfer Conversion and System of MOE, North China Electric Power University, Beijing 102206, PR
* Corresponding author. Email: scottju@ncepu.edu.cn (X. Ju)
Frontiers in Heat and Mass Transfer 2022, 19, 1-10. https://doi.org/10.5098/hmt.19.13
Abstract
Lithium-ion batteries used for energy storage systems will release amount of heat during operation. It will cause serious consequences of thermal
runaway if not dissipate in time. In this study, a self-forming air-cooled battery rack of the energy storage system is established based on the normal
battery rack for energy storage and the shape of the energy storage battery itself. The frames of the battery rack acts as air ducts, which greatly reduce
the system complexity. In this paper, the heat generation model is established based on the experiment, and the four battery rack forms are studied by
CFD simulation. The flow uniformity of the two-level shunt structure, the maximum temperature of the battery, the temperature difference and the
overall pressure drop of the battery rack are analyzed. It was found that the self-forming battery rack in the form of Case Ⅳ has the highest flow rate
and temperature uniformity due to the tapered air ducts. Case Ⅳ can also resist flow non-uniformity when increase the flow rate. The maximum
temperature can be maintained at 33.8 o
C at 0.5 C under the 46 g/s flowrate. Where the maximum bulk temperature difference between batteries and
inside a single battery is less than 3.8 o
C and 1 o
C, respectively. The pressure drop is only 4.8 Pa. What’s more, Case Ⅳ achieves optimal cooling
performance at a 92 g/s flow rate, under which the maximum bulk temperature is 31.8 o
C with the pressure drop of 19.5 Pa.
Keywords
Cite This Article
Zhang, M., Qin, L., Yao, X., Liu, Q., Ju, X. (2022). RESEARCH ON A NOVEL CONCEPT OF SELF-FORMING AIR COOLING BATTERY RACK.
Frontiers in Heat and Mass Transfer, 19(1), 1–10.