Developing a new topology for the DC-DC converter used in fuel cell-electric double layer capacitor hybrid power source system for mobile devices

2014 ◽  
Author(s):  
Shuhei Tosaka ◽  
Tatsuya Yamanaka ◽  
Noboru Katayama ◽  
Masanori Hayase ◽  
Kiyoshi Dowaki ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Mobile Devices ◽  
Double Layer ◽  
Electric Double Layer ◽  
Power Source ◽  
Electric Double Layer Capacitor ◽  
Hybrid Power ◽  
Double Layer Capacitor ◽  
Hybrid Power Source

Enhanced Performance of Electric Double Layer Capacitor as Peak Power Buffer in the Hybrid Power Source Under Low Temperature

2012 ◽  
Author(s):  
Guoyu Zhang ◽  
Lin Yang ◽  
Xiaowei Zhao ◽  
Feng Tian ◽  
Jiaxi Qiang
Keyword(s):  
Low Temperature ◽  
Double Layer ◽  
Electric Double Layer ◽  
Power Source ◽  
Electric Double Layer Capacitor ◽  
Li Ion Battery ◽  
Hybrid Power ◽  
Double Layer Capacitor ◽  
Li Ion ◽  
Hybrid Power Source

The performance of the hybrid power source at low temperature is experimentally analyzed. The parallel connected electric double layer capacitor (EDLC) enhances the power of Li-ion battery as it acts as a buffer in charge and discharge processes, especially at low ambient temperature. The behaviors of current and voltage of both the battery and EDLC are studied by experiments and described by a mathematical model. The EDLC can share a great part of total current load at low temperature, which effectively release the battery stress in pulse charge/discharge processes. Moreover, adding an EDLC in parallel with the battery also exhibits a considerable increase in capacity as compared to the Li-ion battery standalone in pulsed and continuous discharge processes. The performance of the hybrid power source under practical drive cycle is also studied in this article.

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