Author
Lei Sheng
Bio: Lei Sheng is an academic researcher from University of Shanghai for Science and Technology. The author has contributed to research in topics: Battery (electricity) & Lithium-ion battery. The author has an hindex of 5, co-authored 11 publications receiving 142 citations.
Papers
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TL;DR: In this article, a novel serpentine-channel liquid cooling plate with double inlets and outlets is developed for better managing an undesirable temperature distribution of a cell module, and numerical analyses are implemented using the software of FloEFD to study effects of flow directions, flow rates and channel widths of the cooling plate on cell temperature distribution under different operating conditions; a ratio of power consumption as a non-dimensional number is defined to analyze the hydraulic performance of the developed cooling plate.
141 citations
TL;DR: In this paper, a cellular liquid cooling jacket was developed to meet the requirements of typical format 21700 lithium-ion battery cells, and the results showed that the interlaced flow directions can capture a lower temperature standard deviation and more even thermal distribution.
59 citations
TL;DR: In this paper, the specific heat and the heat generation rate of a prismatic lithium iron phosphate battery cell were determined for a wide temperature range at varying operating currents using a temperature even out process to minimize the effect of the temperature difference across the battery.
53 citations
TL;DR: In this paper, a quasi-steady state heat transfer analysis was used to determine the thermal conductivity and the specific heat simultaneously of prismatic lithium iron phosphate cells and pouch cells with different electrode materials.
49 citations
TL;DR: In this paper, a lightweight liquid cooling solution was developed to cool a prismatic hard-cased cell from its small lateral surfaces, where the effects of fluid flow directions, flow rates, channel dimensions, and cooling mediums on the cell's thermal distribution were studied.
32 citations
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TL;DR: It is found that with the help of advanced computational numerical simulations and sophisticated experiments, the air-cooling efficiency is greatly improved by introducing new concepts of battery packs, innovative designs of the cooling channel, and novel thermally conductive materials.
139 citations
TL;DR: In this article, the authors investigated and simulated the thermal performance of water-cooled lithium-ion battery cell and pack used in electric vehicles at high discharge rate with a U-turn type microchannel cold plate and recommended an optimal cooling strategy by considering the effects of various parameters including different discharge rates, inlet coolant mass flow rates, and inlet temperature.
119 citations
TL;DR: In this paper, a flexible composite SBS@PA/EG is successfully prepared by dissolving in an organic solvent and utilized in battery thermal management (BTM) system, where styrene butadiene styrene (SBS) is used as a supporting material, paraffin (PA) as a phase change material and expanded graphite (EG) as thermal conductivity enhancer.
111 citations
TL;DR: A comprehensive review of all the experimental and numerical analyses conducted on various BTMS techniques for electric and hybrid vehicles where the battery cooling systems with air, liquid, phase change material, heat pipe, refrigeration cooling methods are discussed.
Abstract: In this era of a sustainable energy revolution, energy storage in batteries has come up as one of the most emerging fields. Today, the battery usage is outracing in e-vehicles. With the increase in the usage of batteries, efficient energy storage, and retrieval in the batteries has come to the foreground. Further, along with a few other parameters, the operating temperature of the battery of an electric vehicle plays a vital role in its performance. Also, the internal heat generation limits the performance of the lithium-ion batteries. The operating temperature range of an electric vehicle lithium-ion battery ranges from 15°C to 35°C and this is being achieved by a battery thermal management system (BTMS). Owing to the efficiency of these systems, a considerable amount of work has been performed beforehand. To take this research forward, this paper gives a comprehensive review of all the experimental and numerical analyses conducted on various BTMS techniques for electric and hybrid vehicles where the battery cooling systems with air, liquid, phase change material, heat pipe, refrigeration cooling methods are discussed. The significant findings and outcomes of the experimental, simulation, and modeling work on BTMS in recent past years are reviewed in depth. Besides that, a systematic review of hybrid battery cooling systems is also presented in this paper. Lastly, a summary is made of all the developed BTMS along with their experimental, mathematical, and computational simulation models.
100 citations
TL;DR: In this paper, the effect of different cooling structures, the number of mini-channels, and the inlet mass flow rate on the temperature indexes of the battery pack are investigated by single-factor analysis method.
Abstract: Thermal management plays a vital role in ensuring that each single cell in the battery pack works within a reasonable temperature range while maintaining the temperature uniformity among the cells and battery modules in the pack as much as possible. In this study, an electrochemical–thermal model coupled to conjugate heat transfer and fluid dynamics simulations is utilized to accurately evaluate the thermal behavior of the battery pack. The effect of different cooling structures, the number of mini-channels, and the inlet mass flow rate on the temperature indexes of the battery pack are investigated by single-factor analysis method. Then, the simple and efficient orthogonal analysis and comprehensive analysis are used to obtain the optimal factor combination. Results show that the cooling structure design significantly affects the area where the highest temperature occurs in the battery pack. Meanwhile, case D can obviously improve the temperature indexes of the battery pack. The maximum temperature of the battery pack decreases as the number of mini-channels increases, but the downward trend decreases. On the basis of aforementioned work, the optimal combination can control the maximum temperature below 302 K and reduce the maximum temperature difference to 3.52 K. The research and optimization strategies in this paper can provide promising optimization solutions for battery thermal management systems.
94 citations