Simulation Electrifies Motor Design

Sales of electric vehicles (EVs) are skyrocketing. Driven by technological improvements in powertrains and batteries, environmental regulation, and shifting consumer demand for greener vehicles, global sales of EVs rose by 40 percent last year. And the electrification revolution is only getting started. This growth trend will continue as the cost of owning electric vehicles declines and approaches the cost of internal combustion engine (ICE) vehicles sometime within the next decade.


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This Week’s Top 5 Engineering Technology News Articles

Happy Friday, folks! This week’s interesting engineering technology news articles looks at Google’s next big thing, restaurants in China that employ robotic servers and solar panel canopies that not only protect your EV, but charge it at the same time.


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Battery Cell-Level Thermal Modeling

The lithium-ion battery is a preferred candidate as a power source for the hybrid electric vehicle (HEV) and electric vehicle (EV) due to its outstanding characteristics, such as high energy density, high voltage, low self-discharge rate and good stability, among others. Physics-based Newman pseudo-2-D (P2D) lithium-ion models are widely used to predict the electrochemical behavior of lithium-ion cells. Such a model can be extended to solve a 1-D energy balance equation for temperature distribution. However, due to the homogeneity assumption within electrode surfaces used in the P2D model, it only predicts temperature across electrode surfaces, and temperature variation within the electrode surfaces is neglected. Non-homogeneous temperature distribution within electrode surfaces has been observed experimentally and reported in references. Because of this, thermal analysis using the P2D framework has seen only limited success. Continue reading