scholarly journals The study of the physical characteristics and cooling plate thermal control below the lithium battery based on FEA

2021 ◽  
Vol 2083 (2) ◽  
pp. 022012
Author(s):  
Dazhou Yang ◽  
Mengjun Jiang
Keyword(s):  
Pressure Drop ◽  
Lithium Ion ◽  
Internal Flow ◽  
Thermal Control ◽  
Cooling Effect ◽  
Maximum Temperature ◽  
Liquid Cooling ◽  
Cooling Plate ◽  
Cooling Performance ◽  
Side Flow

Abstract Four types of cooling plates with serpent channel structures are established to study the cooling effect of rectangular lithium-ion power battery under different cooling plates. Then, the number of serpent bends is analyzed, whether the fillet and pipe wall thickness is set on the cooling performance of the liquid cooling plate. According to the analysis results, a new liquid flow structure form of liquid cooling plate is designed. Numerical simulation results show that the newly designed cooling plate is integrated with the front flow of water and the internal liquid side flow, achieving a cooling effect with the maximum temperature is 309.55K and a pressure drop of 6032.1pa, which has the most effective cooling performance. Under the requirement of controlling reasonable temperature and low-pressure drop, a liquid cooling plate with better performance can be designed by innovatively setting the direction of the water inlet and outlet and the water channel’s internal flow. The above results will provide some ideas for the design of a lithium-ion battery liquid cooling plate.

Optimization investigation on the liquid cooling heat dissipation structure for the lithium-ion battery package in electric vehicles

2017 ◽  
Vol 231 (13) ◽  
pp. 1735-1750 ◽  
Author(s):  
Jinhong Xie ◽  
Mengyan Zang ◽  
Shuangfeng Wang ◽  
Zijing Ge
Keyword(s):  
Electric Vehicles ◽  
Heat Dissipation ◽  
Lithium Ion ◽  
Maximum Temperature ◽  
Multi Objective Optimization ◽  
Liquid Cooling ◽  
Cooling Plate ◽  
Multi Objective ◽  
Dissipation Structure ◽  
Single Objective

The requirements of cooling and weight reduction for lithium-ion battery packages in electric vehicles are increasingly important. In this paper, a liquid cooling heat dissipation structure is designed and optimized. First of all, the effects of tube diameter, spacing, thickness and layout of the cooling plate on the heat dissipation of the battery package are investigated by using computational fluid dynamics. Afterwards, based on the optimal results of the single factor analysis, an orthogonal table with four factors and three levels are constructed to perform a single-objective optimization, where the minimization of the maximum temperature is the optimization object. Meanwhile, an experiment is carried out to verify the accuracy of the simulation model. In order to further reduce the mass of the cooling plate, a multi-objective optimization is performed, where the minimization of the maximum temperature and the mass are the optimization objects. The maximum temperature is increased by 10.9% in the multi-objective optimization when compared with that in the single objective optimization. However, the mass of the cooling plate in the multi-objective optimization can drop by 82.4%.

Structure Optimization of Battery Module With a Parallel Multi-Channel Liquid Cooling Plate Based on Orthogonal Test

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
Chaofeng Pan ◽  
Qiming Tang ◽  
Zhigang He ◽  
Limei Wang ◽  
Long Chen
Keyword(s):  
Cooling System ◽  
Univariate Analysis ◽  
Plate Thickness ◽  
Three Dimensional ◽  
Orthogonal Test ◽  
Test Method ◽  
Maximum Temperature ◽  
Liquid Cooling ◽  
Cooling Plate ◽  
Battery Module

Abstract In order to keep the power battery work within an ideal temperature range for the electric vehicle, the liquid cooling plate with parallel multi-channels is designed, and a three-dimensional thermal model of battery module with the liquid cooling plate is established. Subsequently, the effects of the cooling plate thickness and the cooling pipe thickness, channel number and coolant mass flow rate on the cooling performance of battery modules are analyzed. The results show that four parameters of the cooling plate have an important role in the thermal behavior of the liquid-cooled battery system. It is not good to improve the performance of the cooling system by changing only certain parameters. The four factors discussed above are optimized by using orthogonal test according to the univariate analysis. With the use of the orthogonal test, the optimization model obtained is obviously enhanced in the aspect of maximum temperature control and temperature uniformity of liquid-cooled battery module. Results show that the three-dimensional thermal analysis and orthogonal test method are compatible with optimal design of liquid-cooled battery modules.

Channel Size Optimization for 3D-IC Integrated Interlayer Microchannel Liquid Cooling

2016 ◽  
Author(s):  
D. D. Ma ◽  
G. D. Xia ◽  
W. Wang ◽  
X. F. Li ◽  
Y. T. Jia
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Rectangular Channel ◽  
Channel Structure ◽  
Maximum Temperature ◽  
Liquid Cooling ◽  
3D Ic ◽  
Flow Rates ◽  
Multi Objective ◽  
Contraction Ratio

3D-IC is getting increasingly attractive, as it improves speed and frequency, and reduces power consumption, noise and latency. However, three dimension (3D) integration technologies bring a new serious challenge to chip thermal management with the power density increased exponentially. Interlayer microchannel liquid cooling is thought as a promising and scalable solution for cooling high heat flux 3D-IC. In this paper, firstly channel number, channel width and height parameters of rectangular channel are optimized by the method of multi-objective parameter optimization under given overall size of 5mm in length and 5mm in width. The results show the total thermal resistances can reach very small under individual constraint condition of volume flow rates, but the pressure drop is too larger to accept. The minimum thermal resistance structure can be got by multi-objective optimization at various constraint conditions. It is found that the channel height and width increase with increasing of flow rates at pumping power less than 0.1W and pressure drop less than 20kPa. Secondly, the zigzag channels are designed on the basis of the optimized rectangular channel structure. The expansion and contraction ratio as an important parameter is optimized by numerical simulation. The thermal enhancement factor and Nusselt number measure the comprehensive performances of heat transfer. The results show heat transfer characteristic is enhanced with the decreasing of expansion and contraction ratio. Besides, the maximum junction temperature and maximum temperature difference are also reduced. 3D-IC with wave channel of β=3/7 is more promising for interlayer cooling.

scholarly journals Thermal Analysis and Improvements of the Power Battery Pack with Liquid Cooling for Electric Vehicles

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3045 ◽  
Author(s):  
Xia ◽  
Liu ◽  
Huang ◽  
Yang ◽  
Lai ◽  
...  
Keyword(s):  
Thermal Management ◽  
Electric Vehicles ◽  
Thermal Performance ◽  
Lithium Ion ◽  
Battery Pack ◽  
Maximum Temperature ◽  
Design Solution ◽  
Liquid Cooling ◽  
Power Battery ◽  
Reference Design

In order to ensure thermal safety and extended cycle life of Lithium-ion batteries (LIBs) used in electric vehicles (EVs), a typical thermal management scheme was proposed as a reference design for the power battery pack. Through the development of the model for theoretical analysis and numerical simulation combined with the thermal management test bench, the designed scheme could be evaluated. In particular, the three-dimensional transient thermal model was used as the type of model. The test result verified the accuracy and the rationality of the model, but it also showed that the reference design could not reach the qualified standard of thermal performance of the power battery pack. Based on the heat dissipation strategy of liquid cooling, a novel improved design solution was proposed. The results showed that the maximum temperature of the power battery pack dropped by 1 °C, and the temperature difference was reduced by 2 °C, which improved the thermal performance of the power battery pack and consequently provides guidance for the design of the battery thermal management system (BTMS).

scholarly journals Simulation Study on Liquid Cooling of Lithium-ion Battery Pack with a Novel Pipeline Structure

2021 ◽  
Vol 2125 (1) ◽  
pp. 012062
Author(s):  
Chao Lv ◽  
Tianyuan Xia ◽  
Hongxin Yin ◽  
Minghe Sun
Keyword(s):  
Lithium Ion Battery ◽  
Flow Rate ◽  
Temperature Difference ◽  
Heat Dissipation ◽  
Lithium Ion ◽  
Battery Pack ◽  
Maximum Temperature ◽  
Coolant Temperature ◽  
Temperature Uniformity ◽  
Liquid Cooling

Abstract Lithium-ion battery is widely used as the mainstream power source of electric vehicles owing to its high specific energy and low self-discharge rate. However, the performance of the lithium-ion battery is largely hindered by its heat dissipation issue. In this paper, lithium-ion battery pack with main channel and multi-branch channel based on liquid cooling sys-tem is studied. Further, numerical simulation was used to analyze the effects of coolant temperature and flow rate on cooling performance. Based on the original pipeline structure, a new pipeline structure was proposed in the present work. The results show that increasing the cool-ant flow rate not only reduces the maximum temperature of the battery pack, but also reduces the temperature difference. Lowering the coolant temperature could largely decrease the maximum temperature of the battery pack, but it tends to widen the temperature difference and worsen the temperature uniformity. Up-on comparison, maximum temperature is found to be decreased by 0.44K, whereas, the temperature difference of the battery decreased and the temperature uniformity is improved.

scholarly journals Cooling Performance Characteristics of 20 Ah Lithium-Ion Pouch Cell with Cold Plates along Both Surfaces

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2550 ◽  
Author(s):  
Mahesh Patil ◽  
Satyam Panchal ◽  
Namwon Kim ◽  
Moo-Yeon Lee
Keyword(s):  
Energy Efficiency ◽  
Pressure Drop ◽  
Electric Vehicles ◽  
Mass Flow ◽  
Flow Rate ◽  
Lithium Ion ◽  
Coolant Temperature ◽  
Cooling Performance ◽  
Efficiency Parameter ◽  
Cold Plates

Temperature control of the lithium-ion pouch cells is crucial for smooth operation, longevity and enhanced safety in the battery-operated electric vehicles. Investigating the thermal behavior of lithium-ion pouch cells and optimizing the cooling performance are required to accomplish better performance, long life, and enhanced safety. In the present study, the cooling performance characteristics of 20 Ah lithium-ion pouch cell with cold plates along both surfaces are investigated by varying the inlet coolant mass flow rates and the inlet coolant temperatures. The inlet coolant mass flow rate is varied from 0.000833 kg/s to 0.003333 kg/s, and the inlet coolant temperature is varied from 5 °C to 35 °C. In addition, the effects of the cold plate geometry parameter on cooling performance of 20 Ah lithium-ion pouch cell are studied by varying the number of the channels from 4 to 10. The maximum temperature and difference between the maximum and the minimum temperatures are considered as important criteria for cooling performance evaluation of the 20 Ah lithium-ion pouch cell with cold plates along both surfaces. The cooling energy efficiency parameter (β) and the pressure drop for 20 Ah lithium-ion pouch cell with cold plates along both surfaces are also reported. The study shows that enhanced cooling energy efficiency is accompanied with low inlet coolant temperature, low inlet coolant mass flow rate, and a high number of the cooling channels. As a result, the temperature distribution, the pressure drop, and the cooling energy efficiency parameter (β) of the 20 Ah lithium-ion pouch cell with cold plates along both surfaces are provided, and could be applied for optimizing the cooling performances of the thermal management system for lithium-ion batteries in electric vehicles.

scholarly journals Thermal Performance of Novel Multilayer Cool Coatings for Asphalt Pavements

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1903 ◽  
Author(s):  
Yujing Chen ◽  
Kui Hu ◽  
Shihao Cao
Keyword(s):  
Temperature Field ◽  
High Temperature ◽  
Cooling Effect ◽  
Temperature Fields ◽  
Asphalt Pavements ◽  
Maximum Temperature ◽  
Coating Structure ◽  
Uncoated Sample ◽  
Cooling Performance ◽  
Reflective Layer

Cool coatings are typically used to address high-temperature problems with asphalt pavements, such as rutting. However, research on the effect of the coating structure on the cooling performance remains a major challenge. In this paper, we used a three-layer cool coating (TLCC) to experimentally investigate the effects of the reflective layer, the emissive layer, and the thermal insulation layer on the cooling effect using a self-developed cooling effect evaluation device (CEED). Based on the test results, we further established temperature fields inside uncoated and coated samples, which were used to study how the TLCC affects the inner temperature field. Our results showed that the reflective layer was the main parameter influencing the cooling effect (8.18 °C), while the other two layers were secondary factors that further improved the cooling effect to 13.25 °C. A comparison of the temperature fields showed that the TLCC could effectively change the internal temperature field compared with the uncoated sample, for example, by reducing the maximum temperature inside, whose corresponding position was also deeper. As the depth increased, the cooling effect of the TLCC first increased and then decreased slowly. The results emphasize the importance of considering the effect of the coating structure on the cooling performance. This study provides a reference for effectively alleviating high-temperature distresses on asphalt pavement, which is conducive to the sustainable development of pavements.

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