The cooling structure of Ni MH batteries in hybrid electric vehicles |
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| Authors: | YANG Ya lian ZHANG Xin LI Long jian QIN Da tong and HU Ming hui |
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| Institution: | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China;State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, P. R. China |
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| Abstract: | Focusing on Ni MH batteries used in hybrid electric vehicles (HEV), a simulation analysis of the flow and temperature fields of the cooling structure in existing batteries is carried out using computational fluid dynamics software. The results show that the temperature uniformity is poor. The uniformity of the flow and the temperature fields is improved by adjusting the baffle and battery positions, changing the tilt angle and the distance between the batteries, inserting wind plates and a coating insulation layer. The coating insulation layer achieves the best effect. Further simulation shows that the coating insulation layer method has the best effects. The results provide the design basis for thermal management program of Ni MH batteries in HEV. |
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| Keywords: | hybrid electric vehicle Ni MH battery cooling structure temperature field |
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