13

Jul

Can a battery that can be used continuously for hundreds of hours be feasible?Evolution and issues of lithium -ion batteries

Illustration: ELENA LACEY

何百時間も連続して使えるバッテリーは実現可能か? リチウムイオン電池の進化と課題

At the same time, a product that raised the battery duration to the next Rever, and was announced at the CES 2022, which was recently held. It was a Hyperx headphone that claims that it can be used for 300 hours in a row. Does the EV evolve greatly with the appearance of lithium silicon batteries? The wireless gaming headset scheduled to be released this spring, which will be released this spring, is said to be a 300 -hour continuous use in Hyperx's "Cloud Alpha Wireless". It is much longer than the conventional model "Cloud II Wireless" that can be used for 30 hours in one charge. I have never heard of a story that the battery duration is 10 times in a short period of time in consumer digital products. How has the battery greatly improved, Hyperx has updated the combination of batteries and semiconductor technology, and the mounted dual chamber technology and driver can be used to support 1,500 mAh lithium polymer batteries. In addition, we did not disclose the details. "Hyperx's new gaming headphones have 300 hours of battery, but I don't know how they were possible." The Gizmode US version has published such a headline for Hyperx headphones, which are as if they can be used in infinity. It is not only Hyperx that claims to durate the out of common sense at CES 2022. The latest technics wireless headphones can be used for 50 hours in one charge. AMD, a semiconductor manufacturer, has announced that the latest "Ryzen" chips will have 24 hours a few hours. Automakers who handle electric vehicles (EVs) are also participating. Mercedes -Benz's concept car "Vision EQXX" will achieve more than 600 miles (about 966 km) in a single charge.

Can I make a long battery?

Since all of the products are still before they are released, we do not know if they have the performance according to the advertisement. Experts say that the battery duration of general consumer products has been longer due to the ultra -efficient processor, low -power mode, and the latest technology, such as silicon anode (negative poles). That doesn't mean that the duration is 10 times longer. Conventional lithium -ion batteries have an upper limit of energy density, and percentage of percentage of percentage is improved each year. However, there are disadvantages to increase the upper limit of energy density. "The battery is getting better little by little. However, if the energy density is increased, a trade -off will occur with the number of cycles (the number of times when the flow from charging to discharge is one cycle)." Vencat Slinibasan, director of the Energy Storage Research Joint, co -researching energy storage science under the Umbrella of the Argonne National Institute, explains. "Major manufacturers set a number of battery performance numerical targets. For example, a battery that can charge 500 times so that products can be used for a few years, but smaller manufacturers are You may choose a battery with a long duration with your knowledge that you have never been two years old. I'm thinking positively. ENOVIX, one of Slinivasan's advice, has developed a new cell structure of a battery that uses Silicon Anode, which is expected to be different from competitors.

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