Method and System to Simulate Battery Pack Key-Off Thermal Behavior after Aggressive Drive Cycles

2017 ◽  
Author(s):  
LeeAnn Wang ◽  
George Garfinkel ◽  
Ahteram Khan ◽  
Mayur Harsha ◽  
Prashanth Rao
Keyword(s):  
Thermal Behavior ◽  
Battery Pack ◽  
Aggressive Drive

A Methodological Approach for Supporting the Thermal Design of Li-Ion Battery for Customized Electric Vehicles

2014 ◽  
Author(s):  
Daniele Landi ◽  
Paolo Cicconi ◽  
Michele Germani
Keyword(s):  
Thermal Behavior ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Combustion Engine ◽  
Thermal Design ◽  
Battery Pack ◽  
Scale Production ◽  
Li Ion Battery ◽  
Suitable Alternative ◽  
Li Ion

An important issue in the mechanical industry is the reduction of the time to market, in order to meet quickly the customer needs. This goal is very important for SMEs that produce small lots of customized products. In the context of greenhouse gas emissions reduction, vehicles powered by electric motors seem to be the most suitable alternative to the traditional internal combustion engine vehicles. The market of customized electric vehicles is a niche market suitable for SMEs. Nowadays, the energy storage system of an electric vehicle powertrain consists of several Li-ion cells arranged in a container called battery pack. Particularly, the battery unit is considered as the most critical component in electric vehicle, because it impacts on performance and life cycle cost. Currently, the design of a battery pack mostly depends on the related market size. A longer design time is expected in the case of a large scale production. While a small customized production requires more agility and velocity in the design process. The proposed research focuses on a design methodology to support the designer in the evaluation of the battery thermal behavior. This work has been applied in the context of a customized small production. As test case, an urban electric light commercial vehicle has been analyzed. The designed battery layout has been evaluated and simulated using virtual prototyping tools. A cooling configuration has been analyzed and then prototyped in a physical vehicle. The virtual thermal behavior of a Li-ion battery has been validated at the test bench. The real operational conditions have been analyzed reproducing several ECE-15 driving cycles and many acceleration runs at different load values. Thermocouples have measured the temperature values during the physical experiments, in order to validate the analytical thermal profile evaluated with the proposed design approach.

Effect analysis on thermal behavior enhancement of lithium–ion battery pack with different cooling structures

2020 ◽  
Vol 32 ◽  
pp. 101800
Author(s):  
Jianguo Wang ◽  
Shuai Lu ◽  
Yingzhou Wang ◽  
Chenyu Li ◽  
Kairang Wang
Keyword(s):  
Thermal Behavior ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Pack ◽  
Effect Analysis

Thermal Behavior Study on HEV Air-Cooled Battery Pack

2011 ◽  
Author(s):  
Hongguang Sun ◽  
Brian Tossan ◽  
Daniel Brouns
Keyword(s):  
Thermal Behavior ◽  
Battery Pack ◽  
Behavior Study

Mathematical model for thermal behavior of lithium-ion battery pack under overheating

2021 ◽  
Vol 191 ◽  
pp. 116894
Author(s):  
Cong-jie Wang ◽  
Yan-li Zhu ◽  
Xue-kun Fan ◽  
Chuang Qi ◽  
Fei Gao
Keyword(s):  
Mathematical Model ◽  
Thermal Behavior ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Battery Pack

scholarly journals Analysis of Heat-Spreading Thermal Management Solutions for Lithium-Ion Batteries

2011 ◽  
Author(s):  
Hussam Khasawneh ◽  
John Neal ◽  
Marcello Canova ◽  
Yann Guezennec ◽  
Ryan Wayne ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Thermal Management ◽  
Management System ◽  
Cooling System ◽  
Battery Pack ◽  
Li Ion Battery ◽  
Thermal Management System ◽  
Li Ion ◽  
Flexible Graphite ◽  
Heat Spreading

The analysis and optimization of thermal performance of Li-ion battery packs are topics of great interest today. Most Li-ion batteries for motive, vehicular, backup power and utility energy storage applications are fitted with a microprocessor-controlled thermal management system including an array of temperature and voltage sensors and an active cooling system. However, as the complexity of the thermal management system increases, so does its weight, volume and parasitic power consumption, all factors that adversely affect the vehicle’s performance. In this sense, an improved thermal management system based on including passive solutions such as phase change materials or heat spreading technologies could decrease the load on active components and ultimately the weight and costs of the system. This paper describes an experimental and simulation study aimed at evaluating the effectiveness of flexible graphite materials for heat spreaders in battery thermal management systems. A commercial Li-ion battery pack for power tools applications was adopted as a case study. The electro-thermal behavior of the battery pack was characterized through combined experimental investigation and 3D FEM modeling to determine the heat generation rate of the battery cells during utilization and to evaluate the thermal behavior of the battery pack. A thermal management solution based on flexible graphite heat spreading material was then designed and implemented. The paper presents a comparative study conducted in simulation to evaluate the improvements in the pack thermal behavior.

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