Tag: electric vehicles

    Layered wireless charging system doubles its power density

    24. Electrical Double Layer, Size Effects in Phase Change

    Researchers have created and tested new layered designs for wireless charging devices that double their power density and reduce weight compared to existing technologies..

    Modern wireless charging systems for electric vehicles consist of two charging coils, one attached under the vehicle and the other located at ground level. When they are aligned, the transmitted power charges the battery.

    A team of scientists from Oak Ridge National Laboratory presented a design of a three-phase system with rotating magnetic fields between the layers of coils that works much more efficiently than existing options.

    According to the developers, the laminated coil structure transfers energy more evenly, which allows doubling the power density. During the tests, the three-phase system successfully transferred 50 kW of power with an efficiency of 95%. As the system improves further, the efficiency will increase even more..

    Layered wireless charging system doubles its power density

    This study brings the team closer to building a device to charge an electric vehicle in 20 minutes..

    In addition to electric vehicles, the technology is becoming more and more popular for charging batteries for gadgets and recently created a wireless charger that can be shaped into any shape.

    text: Ilya Bauer, photo: Oak Ridge National Laboratory, soulask

    Layered wireless charging system doubles its power density

    NEWS

    CATL will start producing car batteries with a service life of 16 years and 2 million km

    Contemporary Amperex Technology (CATL) has developed a new battery for electric vehicles that effectively serves for 16 years and allows you to travel up to 2 million km.

    The warranty period of modern batteries for electric vehicles is about 240 thousand km or eight years, which is the main factor behind the low popularity of this vehicle. In addition, over time, batteries begin to perform worse and accumulate less and less charge..

    However, China’s CATL, the largest supplier of EV batteries in the world, has announced its readiness to launch its next-generation powertrain, which far exceeds the options available on the market today. The manufacturer does not reveal the secret of increasing the efficiency of the batteries, but, according to company representatives, their cost is only 10% higher than that of current ones..

    According to Bloomberg, after Elon Musk personally visited the Shanghai CATL plant and checked the declared characteristics, he agreed to install new batteries in the future Tesla Model 3 sedans..

    CATL will start producing car batteries with a service life of 16 years and 2 million km

    Despite an increase in demand for gasoline cars due to the recent drop in oil prices, the Chinese manufacturer expects the market to recover in 2021. Zeng Yuquun, Chairman of Contemporary Amperex Technology, predicts electric vehicle sales to surpass gasoline sales by 2030.

    In addition to extending the battery life, the researchers are also reducing the time it takes to replenish their charge. Kia recently announced that it will equip its upcoming EVs with an 800V ultra-fast charging system..

    text: Ilya Bauer, photo: Xinhua

    CATL will start producing car batteries with a service life of 16 years and 2 million km
    CATL will start producing car batteries with a service life of 16 years and 2 million km

    NEWS