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学者姓名：锁要红
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Abstract ：
Plenum shape and position play a significant impact on the heat dissipation performance of battery pack with air-cooled structure. However, the existed plenum shape and position are simple. In this work, four different plenum shapes (slanted, convex, concave and stepped) of the battery thermal management system (BTMS) are designed. Then the influences of plenum shapes and positions (at the inlet, outlet, and inlet & outlet) on the heat dissipation performance of the battery are investigated, respectively. Subsequently, a single factor analysis is performed to obtain the range of the design parameters (Hin, Hout, Rin and Rout) in Design 6. Finally, a multi-objective optimization of Design 6 is carried out to further improve the thermal performance of BTMS. Numerical results demonstrate that: 1) For the significant improvement of the cooling ability, convex plenum is at the inlet & outlet whereas other shape ones are all at the inlet. 2) No matter where it is at the inlet, outlet, or inlet & outlet, the convex plenum achieves the excellent cooling effect in Z- and U-type air-cooled structures. 3) Design 6 (convex plenum at the inlet & outlet) exhibits the best cooling ability among all plenum shapes and positions. 4) The design parameters of the optimized Design 6 are Hin = 17.9 mm, Hout = 19 mm, Rin = 2100 mm and Rout = 2000 mm, and the maximum temperature and temperature difference respectively achieve a 35.06 % (18.921 K) and 76.98 % (19.923 K) reduction under such optimized design parameter settings in comparison with those of the benchmark (Design 9). © 2024 Elsevier Ltd
Keyword ：
Air-cooled structure Air-cooled structure Convex Convex Inlet & outlet Inlet & outlet Optimization Optimization Plenum Plenum
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| GB/T 7714 | Suo, Y. , Tang, C. , Han, E. et al. Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system [J]. | Journal of Energy Storage , 2024 , 99 . |
| MLA | Suo, Y. et al. "Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system" . | Journal of Energy Storage 99 (2024) . |
| APA | Suo, Y. , Tang, C. , Han, E. , Chen, Z. . Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system . | Journal of Energy Storage , 2024 , 99 . |
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Objective: Diabetic retinopathy (DR) is a common complication caused by diabetic and can lead to severe visual impairment or even blindness. With the rise of DR population, clinicians demand to adopt an automated diagnosis for reducing some burden. Automated DR classification may improve efficiency and accuracy, and reduce the burden of clinicians. Methods: A full convolution spatial attention module (FCSAM) and CS-ResNet-101 model are proposed for DR classification. In addition, an image enhancement algorithm is proposed to improve the quality of DR images. Furthermore, the cross-entropy loss function is improved to reduce the overfitting. The EyePACS dataset is utilized as training and testing, and the APTOS 2019 dataset is used as external validation. Results: By comparing evaluation metrics of DR classification among different models, the findings are as follows: (1) Accuracy, specificity, sensitivity and F1 score of the CS-ResNet-101 model with the image enhancement algorithm and the improved loss function reach 98.1%, 99.6%, 98.1% and 98.1%, respectively, and it converges faster than other models. (2) The CS-ResNet-101 model exhibits excellent generalization performance on the external validation. Conclusion: The above experimental results indicate that the proposed model with the image enhancement algorithm and the improved loss function is effective and advanced in terms of DR classification. Advances in knowledge: This work proposes an automated DR classification method based on deep learning and an image enhancement algorithm for DR image. © 2024 Elsevier Ltd
Keyword ：
CS-ResNet-101 CS-ResNet-101 Deep learning (DL) Deep learning (DL) Diabetic retinopathy (DR) Diabetic retinopathy (DR) Image enhancement algorithm Image enhancement algorithm Improved loss function Improved loss function
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| GB/T 7714 | Suo, Y. , He, Z. , Liu, Y. . Deep learning CS-ResNet-101 model for diabetic retinopathy classification [J]. | Biomedical Signal Processing and Control , 2024 , 97 . |
| MLA | Suo, Y. et al. "Deep learning CS-ResNet-101 model for diabetic retinopathy classification" . | Biomedical Signal Processing and Control 97 (2024) . |
| APA | Suo, Y. , He, Z. , Liu, Y. . Deep learning CS-ResNet-101 model for diabetic retinopathy classification . | Biomedical Signal Processing and Control , 2024 , 97 . |
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针对目前商业有限元软件中缺少挠曲电模块且有限元自主编程数值模拟挠曲电问题的复杂性问题，提出在COMSOL软件中的偏微分方程模块(PDE模块),对考虑挠曲电效应的力电耦合问题直接进行数值模拟的方法.首先，通过数值计算固定边界位移的挠曲电圆筒，验证有限元数值计算方法的正确性.接着，研究挠曲电系数和不同材料梯度指数对圆筒力电耦合的影响.数值结果表明：在微米尺度下，增大挠曲电系数对径向位移的影响很小，但是对圆筒内部的电势和电位移分布影响很大.增大材料梯度指数对挠曲电圆筒内部力电耦合影响非常明显，圆筒内部径向位移相对边界处变化范围逐渐减小，圆筒内部电势呈现负值逐渐减小后转为正数的趋势，而圆筒内部电位移值负值逐渐增大.本工作可以为挠曲电效应数值计算及挠曲电结构设计提供帮助.
Keyword ：
COMSOL多物理场软件 COMSOL多物理场软件 力电耦合 力电耦合 挠曲电效应 挠曲电效应 有限元分析 有限元分析
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| GB/T 7714 | 吁鹏飞 , 孙文超 , 彭黎明 et al. COMSOL中挠曲电圆筒的力电耦合行为分析 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (04) : 430-436 . |
| MLA | 吁鹏飞 et al. "COMSOL中挠曲电圆筒的力电耦合行为分析" . | 福州大学学报(自然科学版) 52 . 04 (2024) : 430-436 . |
| APA | 吁鹏飞 , 孙文超 , 彭黎明 , 锁要红 . COMSOL中挠曲电圆筒的力电耦合行为分析 . | 福州大学学报(自然科学版) , 2024 , 52 (04) , 430-436 . |
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Classic thermoelectric coupling effects, such as the Seebeck effect, Peltier effect, and Thomson effect, highlight the significant impact of temperature on the electrical properties of materials. In contrast to these traditional effects, recent studies have identified the emergence of thermopolarization effects, where temperature gradients induce polarization changes in materials, leading to heat flow. Moreover, temperature gradients can also result in strain gradients within the material, which, unlike the piezoelectric effect, can induce polarization, giving rise to the flexoelectric effect. Despite the growing interest in thermopolarization phenomena, there remains a lack of thorough qualitative and quantitative analysis. In this study, we present a thermo-electro-elastic coupling model for an isotropic hollow cylinder incorporating thermopolarization and flexoelectric effects. This model necessitates modifications to the heat conduction equation, constitutive equation, and governing equation. Through numerical simulations, the impact of thermopolarization coefficient and flexoelectric coefficient on radial displacement, temperature, potential, and electrical displacement is investigated. The results show that the steady-state radial displacement and temperature initially increase and then decrease with variations in the thermal polarization coefficient. Moreover, an increase in the thermal polarization coefficient speeds up the thermo-electro-elastic coupling process towards a steady state. Additionally, mutual interactions between flexoelectric and thermal polarization effects are observed. This comprehensive model provides valuable insights for the design and optimization of microelectronic devices.
Keyword ：
flexoelectric effect flexoelectric effect temperature gradient temperature gradient thermo-electro-elastic coupling thermo-electro-elastic coupling thermopolarization effect thermopolarization effect
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| GB/T 7714 | Yu, Pengfei , Yang, Dianhan , Peng, Liming et al. Analysis of Flexoelectric Hollow Cylinder with Thermopolarization Effect [J]. | MECHANICS OF SOLIDS , 2024 , 59 (5) : 3024-3037 . |
| MLA | Yu, Pengfei et al. "Analysis of Flexoelectric Hollow Cylinder with Thermopolarization Effect" . | MECHANICS OF SOLIDS 59 . 5 (2024) : 3024-3037 . |
| APA | Yu, Pengfei , Yang, Dianhan , Peng, Liming , Suo, Yaohong , Wu, Yihan . Analysis of Flexoelectric Hollow Cylinder with Thermopolarization Effect . | MECHANICS OF SOLIDS , 2024 , 59 (5) , 3024-3037 . |
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Different configurations and proportion of phase change material (PCM) have a vital impact on the thermal performance of the battery thermal management system (BTMS). In this work, the thermal performance of the battery pack is investigated by a combined PCM and air cooling technique. Firstly, four cases of PCM configuration are proposed to investigate the heat dissipation performance. Then PCM proportion is optimized to obtain better temperature uniformity, smaller energy loss and smaller amount of PCM based on Case 4. Finally, subjected to the installation space constraint of battery box (smaller volume), Case 5 is designed to diminish the volume of battery box and the corresponding thermal performance is discussed. The results show that thermal performance with PCM is superior than that without PCM; Case 4 not only enhances the thermal performance but also reduces the amount of PCM; The optimized PCM proportion is only 64 %; Compared with all PCM, the optimized Delta T, Delta P and PCM volume respectively reduce 11.91 % (0.83 K), 11.61 % (4.18 Pa) and 43.06 % (215,544 mm3); Case 5 not only shows more better thermal performance than Case 4 but also reduces 102,200 mm3 (3.48 %) volume of the battery box. The proposed strategy is effective for improving thermal performance of BTMS and saving the amount of PCM.
Keyword ：
Combined PCM and air-cooling structure Combined PCM and air-cooling structure Optimization Optimization PCM configuration PCM configuration PCM proportion PCM proportion Thermal management Thermal management
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| GB/T 7714 | Suo, Yaohong , Tang, Chengbo , Jia, Qiongnan et al. Influence of PCM configuration and optimization of PCM proportion on the thermal management of a prismatic battery with a combined PCM and air cooling structure [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 80 . |
| MLA | Suo, Yaohong et al. "Influence of PCM configuration and optimization of PCM proportion on the thermal management of a prismatic battery with a combined PCM and air cooling structure" . | JOURNAL OF ENERGY STORAGE 80 (2024) . |
| APA | Suo, Yaohong , Tang, Chengbo , Jia, Qiongnan , Zhao, Wenrui . Influence of PCM configuration and optimization of PCM proportion on the thermal management of a prismatic battery with a combined PCM and air cooling structure . | JOURNAL OF ENERGY STORAGE , 2024 , 80 . |
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Objective: Diabetic retinopathy (DR) is a common complication caused by diabetic and can lead to severe visual impairment or even blindness. With the rise of DR population, clinicians demand to adopt an automated diagnosis for reducing some burden. Automated DR classification may improve efficiency and accuracy, and reduce the burden of clinicians. Methods: A full convolution spatial attention module (FCSAM) and CS-ResNet-101 model are proposed for DR classification. In addition, an image enhancement algorithm is proposed to improve the quality of DR images. Furthermore, the cross-entropy loss function is improved to reduce the overfitting. The EyePACS dataset is utilized as training and testing, and the APTOS 2019 dataset is used as external validation. Results: By comparing evaluation metrics of DR classification among different models, the findings are as follows: (1) Accuracy, specificity, sensitivity and F1 score of the CS-ResNet-101 model with the image enhancement algorithm and the improved loss function reach 98.1%, 99.6%, 98.1% and 98.1%, respectively, and it converges faster than other models. (2) The CS-ResNet-101 model exhibits excellent generalization performance on the external validation. Conclusion: The above experimental results indicate that the proposed model with the image enhancement algorithm and the improved loss function is effective and advanced in terms of DR classification. Advances in knowledge: This work proposes an automated DR classification method based on deep learning and an image enhancement algorithm for DR image.
Keyword ：
CS-ResNet-101 CS-ResNet-101 Deep learning (DL) Deep learning (DL) Diabetic retinopathy (DR) Diabetic retinopathy (DR) Image enhancement algorithm Image enhancement algorithm Improved loss function Improved loss function
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| GB/T 7714 | Suo, Yaohong , He, Zhaokun , Liu, Yicun . Deep learning CS-ResNet-101 model for diabetic retinopathy classification [J]. | BIOMEDICAL SIGNAL PROCESSING AND CONTROL , 2024 , 97 . |
| MLA | Suo, Yaohong et al. "Deep learning CS-ResNet-101 model for diabetic retinopathy classification" . | BIOMEDICAL SIGNAL PROCESSING AND CONTROL 97 (2024) . |
| APA | Suo, Yaohong , He, Zhaokun , Liu, Yicun . Deep learning CS-ResNet-101 model for diabetic retinopathy classification . | BIOMEDICAL SIGNAL PROCESSING AND CONTROL , 2024 , 97 . |
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Thermal runaway and volume expansion caused by temperature rise under fast charging of lithium-ion batteries (LIBs) are the major reasons of battery explosion and cycle performance degradation. In this work, considering the radiation heat transfer on the battery surface, an electrochemical-thermal-mechanical coupling model of cylindrical LIBs under fast charging (state of charge (SOC) <= 80%) is developed in order to investigate the distributions of the temperature and stress. Then, choosing 18650 LIBs as the object, the charge efficiency, temperature, and stress distributions are compared between fast charging and galvanostatic operation under SOC <= 80%, respectively. Finally, the influences of the thickness, particle radius, the maximum lithium-ion concentration of the cathode, and initial electrolyte concentration on the temperature, radial stress, and hoop stress of LIB during charge are explored, respectively. Numerical results show that fast charging improves 20.8% of the charge efficiency. Increasing the cathodic thickness and decreasing the cathodic maximum lithium-ion concentration or initial electrolyte concentration can reduce the temperature of LIB during the charge. The results of this work will provide some reference value for the design of LIBs under fast charging.
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| GB/T 7714 | Suo, Yaohong , Jia, Qiongnan , Lin, Mingju et al. Electrochemical-Thermal-Mechanical Coupling Analysis of Lithium-Ion Batteries under Fast Charging [J]. | INTERNATIONAL JOURNAL OF ENERGY RESEARCH , 2024 , 2024 . |
| MLA | Suo, Yaohong et al. "Electrochemical-Thermal-Mechanical Coupling Analysis of Lithium-Ion Batteries under Fast Charging" . | INTERNATIONAL JOURNAL OF ENERGY RESEARCH 2024 (2024) . |
| APA | Suo, Yaohong , Jia, Qiongnan , Lin, Mingju , Chen, Zhongyang . Electrochemical-Thermal-Mechanical Coupling Analysis of Lithium-Ion Batteries under Fast Charging . | INTERNATIONAL JOURNAL OF ENERGY RESEARCH , 2024 , 2024 . |
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Abstract ：
Plenum shape and position play a significant impact on the heat dissipation performance of battery pack with air-cooled structure. However, the existed plenum shape and position are simple. In this work, four different plenum shapes (slanted, convex, concave and stepped) of the battery thermal management system (BTMS) are designed. Then the influences of plenum shapes and positions (at the inlet, outlet, and inlet & outlet) on the heat dissipation performance of the battery are investigated, respectively. Subsequently, a single factor analysis is performed to obtain the range of the design parameters (H-in, H-out, R-in and R-out) in Design 6. Finally, a multi-objective optimization of Design 6 is carried out to further improve the thermal performance of BTMS. Numerical results demonstrate that: 1) For the significant improvement of the cooling ability, convex plenum is at the inlet & outlet whereas other shape ones are all at the inlet. 2) No matter where it is at the inlet, outlet, or inlet & outlet, the convex plenum achieves the excellent cooling effect in Z- and U-type air-cooled structures. 3) Design 6 (convex plenum at the inlet & outlet) exhibits the best cooling ability among all plenum shapes and positions. 4) The design parameters of the optimized Design 6 are H-in = 17.9 mm, H-out = 19 mm, R-in = 2100 mm and R-out = 2000 mm, and the maximum temperature and temperature difference respectively achieve a 35.06 % (18.921 K) and 76.98 % (19.923 K) reduction under such optimized design parameter settings in comparison with those of the benchmark (Design 9).
Keyword ：
Air-cooled structure Air-cooled structure Convex Convex Inlet & outlet Inlet & outlet Optimization Optimization Plenum Plenum
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| GB/T 7714 | Suo, Yaohong , Tang, Chengbo , Han, Enhao et al. Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 99 . |
| MLA | Suo, Yaohong et al. "Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system" . | JOURNAL OF ENERGY STORAGE 99 (2024) . |
| APA | Suo, Yaohong , Tang, Chengbo , Han, Enhao , Chen, Zhongyang . Comparative assessment and optimization among several plenum shapes and positions for the forced air-cooled battery thermal management system . | JOURNAL OF ENERGY STORAGE , 2024 , 99 . |
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表面效应在纳米电极颗粒中占有主导地位，论文首先建立了锂离子电池充放电过程中考虑表面效应的反应-扩散-力学全耦合模型；然后对比了有无表面效应对锂离子浓度、径向应力和环向应力的影响；最后探讨了反应系数和尺寸效应对浓度和扩散诱导应力的影响.数值结果表明表面效应随着充电时间的增加逐渐减小直至充电结束趋于稳定；表面压效应对本模型的浓度无影响但抑制了扩散诱导应力的增加；较慢的化学反应和较小的纳米电极颗粒尺寸可抑制电极应力的增加.
Keyword ：
化学反应 化学反应 扩散诱导应力 扩散诱导应力 表面效应 表面效应 锂离子电池 锂离子电池
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| GB/T 7714 | 肖军文 , 锁要红 , 赵文锐 . 具有表面效应的球形纳米电极颗粒中的反应-扩散-力学全耦合分析 [J]. | 固体力学学报 , 2023 , 44 (01) : 47-54 . |
| MLA | 肖军文 et al. "具有表面效应的球形纳米电极颗粒中的反应-扩散-力学全耦合分析" . | 固体力学学报 44 . 01 (2023) : 47-54 . |
| APA | 肖军文 , 锁要红 , 赵文锐 . 具有表面效应的球形纳米电极颗粒中的反应-扩散-力学全耦合分析 . | 固体力学学报 , 2023 , 44 (01) , 47-54 . |
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Surface effect in the nanoelectrode plays a significant role in the diffusion-induced-stresses which results in fracture at the surface during the charge or discharge of lithium-ion batteries. In this work, considering the surface effect and structural damage, a coupled diffusion-induced deformation model is developed in a nanosphere electrode particle under potentiostatic operation. Then the effects of surface parameters and damage constant on the damage state variable, concentration of lithium-ions, radial stress, hoop stress and equivalent stress are investigated, respectively. Numerical results show that the compressive surface effect reduces the structural damage state variable and the lithium-ion concentration, and hinders the damage through converting the hoop stress from tensile to compressive; The maximum equivalent stress occurs at the surface for smaller damage constant and it will move toward the center for larger damage constant.
Keyword ：
diffusion-induced stress diffusion-induced stress lithium-ion batteries lithium-ion batteries structural damage structural damage surface effect surface effect
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| GB/T 7714 | Suo, Yaohong , Xiao, Junwen , He, Zhaokun . Analysis of Diffusion-Induced Deformation in a Spherical Electrode with Surface Effect and Structural Damage [J]. | MECHANICS OF SOLIDS , 2023 , 58 (3) : 985-993 . |
| MLA | Suo, Yaohong et al. "Analysis of Diffusion-Induced Deformation in a Spherical Electrode with Surface Effect and Structural Damage" . | MECHANICS OF SOLIDS 58 . 3 (2023) : 985-993 . |
| APA | Suo, Yaohong , Xiao, Junwen , He, Zhaokun . Analysis of Diffusion-Induced Deformation in a Spherical Electrode with Surface Effect and Structural Damage . | MECHANICS OF SOLIDS , 2023 , 58 (3) , 985-993 . |
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