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Introduction Calendar aging of NCA lithium batteries is investigated by storing commercial 18650 cells with NCA cathode and graphite anode at different states of charge and temperatures. Calendar aging comprises all aging processes that lead to a degradation of a battery cell independent of charge-discharge cycling. It is an important factor in many applications of …
Aging of NCA Lithium Batteries – Semco University Read More »
Introduction The power battery system is usually composed of battery cells, battery management system, Pack system including functional components, wiring harness, structural parts and other related components. The failure mode of the power battery system can be divided into three different levels of failure modes, namely the cell failure mode, the Cell BMS Pack Failure …
Cell BMS PACK failure analysis – Semco University Read More »
Introduction: Lithium Ion Battery Production Process in sets of electrodes and then assembled in cells. Active material is mixed with polymer binders, conductive additive, and solvents to form a slurry that is then coated on a current collector foil and dried to remove the solvent and create a porous electrode coating. There is no single lithium-ion …
Key points of lithium ion battery production process control – Semco university Read More »
Introduction The three electrode system consists of a working electrode, counter electrode, and reference electrode. The reference electrode’s role is to act as a reference in measuring and controlling the working electrode potential, without passing any current. The reference electrode should have a constant electrochemical potential at low current density. Electrodes, the working, reference, and auxiliary make up the modern three …
How the three electrode system works – Semco University Read More »
Introduction With the development of science and technology and the improvement of people’s living standards, digital products have become a necessity in people’s lives. Because of the large demand, there are many kinds of products on the market, and the quality is also uneven. So how should we identify the quality of the charger? Let …
How to choose a high-quality electric vehicle charger – Semco University Read More »
Introduction Do you often let your car “test” in danger? In fact, it’s cold, and it’s easy to “freeze” the battery when going out on an electric bike. Therefore, if you want to be more secure when you go out, you need to know about battery antifreeze (batteries afraid of the cold in winter). With …
Are batteries afraid of the cold in winter? – Semco university Read More »
Introduction Engineers made some dismantling and comments on the battery system design and power system of Model S Plaid on the tubing. I would like to sort out this content in two phases. Since the module is not dismantled here, the main information that can be obtained includes: the design idea and electrical design of …
Model S Plaid battery system design – Semco University Read More »
Introduction Li-ion batteries are the powerhouse for the digital electronic revolution in this modern mobile society, exclusively used in mobile phones and laptop computers. The success of Lithium-ion Battery Commercialization was not an overnight achievement, but a result of intensive research and contribution by many great scientists and engineers. Then much efforts have been put …
Basic knowledge of lithium-ion battery commercialization – Semco University Read More »
Introduction In the past few years, we’ve seen the lithium ion battery packaging market grow dramatically, sparking a lot of conversation. In today’s blog post, we will go through what makes lithium batteries stand out compared to other goods, why they are classified as Dangerous Goods (DG), discuss regulations and how certification works. Finally, we …
Lithium-ion Battery Packaging Information for Beginners – Semco University Read More »
Introduction Lithium-ion batteries are accompanied by volume expansion, including structural expansion and gas production expansion, during the process of formation, cycling, storage, and overcharging. The charge-discharge rate determines the rate of the lithium-deintercalation reaction of the battery cell, and it is also accompanied by different degrees of heat generation or lithium evolution. When researchers study …
Volume expansion in shelving stage – Semco University Read More »
