Preface Since the invention of the first automobile by German engineer Carl Benz in 1886, the automotive industry has undergone over a century of continuous development. Automobiles have greatly contributed to modern civilization, providing convenience and economic growth. ቢሆንም, they have also played a significant role in environmental degradation, particularly through air pollution. From the […]
Abstract With the rapid advancement of new energy vehicle (NEV) ቴክኖሎጂ, the safety and reliability of electrical power systems have become critical concerns. This paper explores circuit protection mechanisms in NEVs, including battery management systems (BMS), power transmission lines, power management, motor controllers, and high-voltage DC circuits. By analyzing various protection strategies such as overcurrent […]
1. Scope This standard specifies the test methods for evaluating the performance of thermal management systems in power batteries. It includes test conditions, test procedures, performance evaluation criteria, and reporting requirements. This standard applies to thermal management systems for power batteries used in electric vehicles (ኢቪዎች), hybrid electric vehicles (HEVs), and other relevant applications. 2. […]
Introduction With the global push toward sustainability, the transportation and heavy machinery industries are undergoing significant transformations. ከነሱ መካከል, the advent of electric dump trucks marks a revolutionary shift from traditional diesel-powered vehicles to cleaner and more efficient alternatives. These electric dump trucks not only contribute to reducing carbon emissions but also provide operational advantages […]
Introduction to Electric Drive Motors in New Energy Vehicles With the rapid advancement of new energy vehicles (ኔቪዎች), electric drive motors have become one of the core components of electric vehicles (ኢቪዎች). The performance of these motors directly affects the efficiency, ክልል, and overall driving experience of an EV. ከተላካ ውስጣዊ ውህደት ተቃራኒ (ICE) […]
Introduction With the rapid development of the electric vehicle industry, the electric drive system sector has also made significant progress. Product technology continues to improve, the scale of industrial development is expanding, and new materials and processes are emerging. The trend of integration is becoming more evident. Due to the complexity of electric vehicle driving […]
በቅርብ ዓመታት ውስጥ, with strong support from national policies, the pure electric vehicle industry has developed rapidly. Traditional fuel vehicle users are transitioning to NEV users, and as product technology advances, users’ operational habits and awareness should also improve. After all, pure electric vehicles are still a relatively new product for many consumers. With the […]
1. Electric Vehicle Drive Motors 1.1 DC Motors Early electric vehicles (ኢቪዎች) often used DC motors due to their simple control mechanisms and low cost. The most common types include separately excited DC motors and series-wound DC motors. ቢሆንም, the presence of a commutator and brushes leads to mechanical wear, requiring regular maintenance. These components […]
1. Introduction Lithium-ion batteries are widely used in various industrial applications, and their safety has always been a key research topic. Studies have shown that mechanical abuse is one of the main causes of short circuits in lithium batteries during traffic accidents. Many studies have investigated the mechanical abuse of batteries. Wang Zhenpo et al. […]
Under the multiple influences of environmental protection and policies, the sales volume of new energy vehicles, especially electric vehicles, has been rising steadily and growing rapidly. ቢሆንም, behind the rapid development, the comments on electric vehicles have always been mixed. ለምሳሌ, they are energy-saving but the purchase cost is too high, they are environmentally […]