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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

ENVIRONMENTAL TEMPERATURE EFFECT AND THERMAL MANAGEMENT OF LITHIUM-ION BATTERY WITH PHASE CHANGE MATERIAL/HEAT PIPE COUPLED SYSTEM

Get access (open in a dialog) DOI: 10.1615/IHTC16.ctm.023343
pages 3965-3972

要約

Secondary lithium-ion batteries are a promising candidate for the power source of electric vehicles due to its advantages of high energy density. However, the reliable and efficient performance of these batteries has high sensitivity to environmental temperature, which is challenge related to battery thermal management (BTM). In this paper, the effects of temperature on battery discharge capacity and voltage platform are discussed firstly. The capacity and power are slightly affected when the temperature is above 20 °C no matter the battery is discharged at low or high rate, while the performance is degraded seriously at low temperature especially under 0 °C. Furthermore, a novel phase change material/heat pipe coupled system is proposed to fulfil the comprehensive energy utilization for electric vehicles with the functions of high heat storage capacity of PCM and excellent heat transfer efficiency of heat pipe. The highest temperature can be reduced further and controlled under 50 °C at a high discharge rate of 5°C with the introduction of heat pipe.