The Experts below are selected from a list of 7605 Experts worldwide ranked by ideXlab platform
Dong Kee Sohn - One of the best experts on this subject based on the ideXlab platform.
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coupled electrochemical thermal modelling of a novel li ion Battery Pack thermal management system
Applied Energy, 2016Co-Authors: Suman Basu, Krishnan S Hariharan, Subramanya Mayya Kolake, Taewon Song, Dong Kee SohnAbstract:Thermal management system is of critical importance for a Li-ion Battery Pack, as high performance and long Battery Pack life can be simultaneously achieved when operated within a narrow range of temperature around the room temperature. An efficient thermal management system is required to keep the Battery temperature in this range, despite widely varying operating conditions. A novel liquid coolant based thermal management system, for 18,650 Battery Pack has been introduced herein. This system is designed to be compact and economical without compromising safety. A coupled three-dimensional (3D) electrochemical thermal model is constructed for the proposed Li-ion Battery Pack. The model is used to evaluate the effects of different operating conditions like coolant flow-rate and discharge current on the Pack temperature. Contact resistance is found to have the strongest impact on the thermal performance of the Pack. From the numerical solution, a simple and novel temperature correlation of predicting the temperatures of all the individual cells given the temperature measurement of one cell is devised and validated with experimental results. Such coefficients have great potential of reducing the sensor requirement and complexity in a large Li-ion Battery Pack, typical of an electric vehicle.
Ping Liu - One of the best experts on this subject based on the ideXlab platform.
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Thermal performance of lithium ion Battery Pack by using cold plate
Applied Thermal Engineering, 2019Co-Authors: Tao Deng, Yan Ran, Guodong Zhang, Ping LiuAbstract:Abstract Thermal performance is vital to the lithium ion Battery Pack of electric vehicles. In order to study the thermal performance of Battery Pack, a liquid cooling Battery Pack consisted of four batteries and five cold plates was established in this paper. The effects of mass flow of cooling liquid, cold plate number, channel distribution and cooling direction on the thermal behaviors of the Battery Pack were analyzed. The results showed that the mass flow of 1 g·s−1 was suitable for heat dissipation and the maximum temperatures of Battery Pack were 27.67 °C and 32.17 °C after 3C and 5C discharge, respectively. Besides, the best heat dissipation condition can be achieved by placing more cooling channels in the middle of the Battery Pack where heat gathers easily, such as Design 532, the maximum temperature after 3C and 5C discharge reached 27.59 °C and 31.96 °C, respectively. Furthermore, it was found that reasonable cooling direction can effectively improve the uniformity of temperature distribution of Battery Pack.
Suman Basu - One of the best experts on this subject based on the ideXlab platform.
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coupled electrochemical thermal modelling of a novel li ion Battery Pack thermal management system
Applied Energy, 2016Co-Authors: Suman Basu, Krishnan S Hariharan, Subramanya Mayya Kolake, Taewon Song, Dong Kee SohnAbstract:Thermal management system is of critical importance for a Li-ion Battery Pack, as high performance and long Battery Pack life can be simultaneously achieved when operated within a narrow range of temperature around the room temperature. An efficient thermal management system is required to keep the Battery temperature in this range, despite widely varying operating conditions. A novel liquid coolant based thermal management system, for 18,650 Battery Pack has been introduced herein. This system is designed to be compact and economical without compromising safety. A coupled three-dimensional (3D) electrochemical thermal model is constructed for the proposed Li-ion Battery Pack. The model is used to evaluate the effects of different operating conditions like coolant flow-rate and discharge current on the Pack temperature. Contact resistance is found to have the strongest impact on the thermal performance of the Pack. From the numerical solution, a simple and novel temperature correlation of predicting the temperatures of all the individual cells given the temperature measurement of one cell is devised and validated with experimental results. Such coefficients have great potential of reducing the sensor requirement and complexity in a large Li-ion Battery Pack, typical of an electric vehicle.
Tao Deng - One of the best experts on this subject based on the ideXlab platform.
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Thermal performance of lithium ion Battery Pack by using cold plate
Applied Thermal Engineering, 2019Co-Authors: Tao Deng, Yan Ran, Guodong Zhang, Ping LiuAbstract:Abstract Thermal performance is vital to the lithium ion Battery Pack of electric vehicles. In order to study the thermal performance of Battery Pack, a liquid cooling Battery Pack consisted of four batteries and five cold plates was established in this paper. The effects of mass flow of cooling liquid, cold plate number, channel distribution and cooling direction on the thermal behaviors of the Battery Pack were analyzed. The results showed that the mass flow of 1 g·s−1 was suitable for heat dissipation and the maximum temperatures of Battery Pack were 27.67 °C and 32.17 °C after 3C and 5C discharge, respectively. Besides, the best heat dissipation condition can be achieved by placing more cooling channels in the middle of the Battery Pack where heat gathers easily, such as Design 532, the maximum temperature after 3C and 5C discharge reached 27.59 °C and 31.96 °C, respectively. Furthermore, it was found that reasonable cooling direction can effectively improve the uniformity of temperature distribution of Battery Pack.
Seng How Kuan - One of the best experts on this subject based on the ideXlab platform.
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computational fluid dynamic and thermal analysis of lithium ion Battery Pack with air cooling
Applied Energy, 2016Co-Authors: Lip Huat Saw, Andrew A. O. Tay, Seng How KuanAbstract:A Battery Pack is produced by connecting the cells in series and/or in parallel to provide the necessary power for electric vehicles (EVs). Those parameters affecting cost and reliability of the EVs, including cycle life, capacity, durability and warranty are highly dependent on the thermal management system. In this work, computational fluid dynamic analysis is performed to investigate the air cooling system for a 38,120 cell Battery Pack. The Battery Pack contained 24 pieces of 38,120 cells, copper bus bars, intake and exhaust plenum and holding plates with venting holes. Heat generated by the cell during charging is measured using an accelerating rate calorimeter. Thermal performances of the Battery Pack were analyzed with various mass flow rates of cooling air using steady state simulation. The correlation between Nu number and Re number were deduced from the numerical modeling results and compared with literature. Additionally, an experimental testing of the Battery Pack at different charging rates is conducted to validate the correlation. This method provides a simple way to estimate thermal performance of the Battery Pack when the Battery Pack is large and full transient simulation is not viable.
