TY  - EJOU
AU  - Zhang, Mingjie 
AU  - Qin, Le 
AU  - Yao, Xiaole 
AU  - Liu, Qian 
AU  - Ju, Xing 

TI  - RESEARCH ON A NOVEL CONCEPT OF SELF-FORMING AIR  COOLING BATTERY RACK
T2  - Frontiers in Heat and Mass Transfer

PY  - 2022
VL  - 19
IS  - 1
SN  - 2151-8629

AB  - 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.
KW  - <i>Lithium ion battery
KW  -  battery thermal management system
KW  -  air cooling
KW  -  self-forming</i>

DO  - 10.5098/hmt.19.13