CAJ | 학술논문

从混合动力汽车到电力系统等领域,超级电容器作为储能器件被应用在储能单元中.为了研究超级电容器性能受温度影响的现象,提出了一种超级电容器的三维热模型,并首先用有限元分析法仿真了常温条件下超级电容器恒流充放电过程中的热行为,然后用热电阻实际测量超级电容器充放电过程中内部温度的变化情况,结果表明该模型在中小电流充放电条件下能准确地模拟超级电容器的发热情况,其仿真结果与实验结果较符合.从而可知,在常温下,用中小电流对超级电容器充放电,超级电容器温升≤15℃,其性能是可靠的.
종혼합동력기차도전력계통등영역,초급전용기작위저능기건피응용재저능단원중.위료연구초급전용기성능수온도영향적현상,제출료일충초급전용기적삼유열모형,병수선용유한원분석법방진료상온조건하초급전용기항류충방전과정중적열행위,연후용열전조실제측량초급전용기충방전과정중내부온도적변화정황,결과표명해모형재중소전류충방전조건하능준학지모의초급전용기적발열정황,기방진결과여실험결과교부합.종이가지,재상온하,용중소전류대초급전용기충방전,초급전용기온승≤15℃,기성능시가고적.
Electrochemical capacitors are also called ‘electric double layer capacitors'. The‘supercapacitors' or ‘ultracapacitors' stores the energy in the electric field of the electrochemical double-layer. In order to study the supercapacitor performance influenced by the temperature, a supercapacitor 3D thermal model was proposed to study the supercapacitor thermal behavior under the normal temperature condition in constant current charge and discharge mode in the article. At first, the transient state and the stable state temperature fields were simulated with the finite element method, then the internal temperature of supercapacitor were measured with the thermal resistance during charging and discharging process under normal temperature. The results indicate this model can accurately simulate the supercapacitor thermal behavior under the small or moderate current charging and discharging condition. Thus,the supercapacitor charges and discharges with the small or moderate current under the normal temperature, the temperature rise of supercapacitor is not higher than 15 ℃, and its performance is reliable.