In 1904, Nikola TeslawroteThat it was possible “to transmit power, in unlimited amounts, to any terrestrial distance and almost without loss.” He never did it. We began the 20Th世纪有期望的全球力量,100年后,我们获得了充电垫,这几乎没有比电缆的改进。我们的社会为所谓的“无线力量”不知所措,为此做出了自我限制的神话。
In the last decade, however, almostallof the old assumptions about wireless power have been challenged。Wireless power is a whole new animal, and it’s time to dispel the myths.
1. “Wireless power” is just those charging pads.
否。当我说“无线电源”时,我说的无处不在,一致的无线电源像Wi-Fi一样分发。它不需要插头,电线或充电垫。它在最大30英尺的距离内动力动力动力,没有视线。这项技术已经存在了几年。
2.这种无线电源必须很危险。
When wireless power systems are designed properly, they poseno risk给人,宠物和植物。接收器用低功率的全向信号(Wi-Fi 2.45 GHz)照亮了环境,该信号不会通过有机物。它将从墙壁,地板和天花板上弹起,以到达发射器。然后,发射器沿传入信号的确切路径向后发送电源。该过程每秒重复100次,可保护生物免受暴露。
3.我们是否需要所有新设备才能使无线电源可行?
不,我们可以通过其电源端口或电池舱的无线电源接收器改造现有的手机,平板电脑,可穿戴设备等。一些智能手机案例已经接收无线电源并将其传输到设备上。从长远来看,在制造过程中将无线电源接收器构建为新电子设备将更加有效。
4.无线电源几乎无法为设备充电。
诸如烟雾探测器,遥控器和恒温器之类的设备保持局限于一个位置,并且消耗了很少的功率。与我们这样旅行的设备,例如我们的手机和可穿戴设备,需要快速充电,因为我们在充电过程中放弃了它们。无线电源在使用时可以为它们充电,因此充电的持续时间成为了一个问题。
5. Wired power is 100% efficient.
Now, most people leave their chargers in the wall 24/7. Charging the phone takes about 10 watt-hours, but the charger consumes roughly 12 watt-hours over the course of a day when the phone isn’t connected. In other words, the charger wastes more than two times the power it took to charge the phone. That brings you down to about 14% efficiency for one phone and 7% efficiency if you have two phones or a phone and a tablet.
6. Then from an efficiency standpoint, those charging pads must be the best.
充电垫的制造商会告诉您,他们的效率为70%至80%。那mightbe true for the coil-to-coil efficiency, but total efficiency means 70% multiplied by 50% (from the adapter) to give you 35% efficiency while charging for, say, four hours.
但是,在一天中其他20个小时的时间里,该垫子正在生成蓝牙信号,以便它始终可以检测到手机。在一天的过程中,这将使效率下降了几个百分点。因此,垫子的效率不如电缆,但没有提供任何额外的价值。
7.无线电源不能比电缆或充电垫更好。
使用电缆,您有一个插座充电一台设备。无线电源像Wi-Fi这样的工作原理是您有一个来源喂养数十个甚至数百个设备(手机,您的孩子的玩具,烟雾探测器,安全传感器,门锁,遥控器等)。
绝对效率在1%至9%之间,具体取决于您收费的设备数量,但发射器会消耗固定量的功率。换句话说,无线电源效率与电缆和充电垫相同。收费的设备越多,它变得越有效。
8. Won’t people steal my wireless power?
就像Wi-Fi网络一样,无线电源平台可以加密发射机和接收器之间的连接以及身份验证设备。发射器可以识别能够接收无线电源的设备,但是管理平台的人决定哪些设备获得电源。
9. Wireless power is just a luxury—it has no real benefit for the world.
Wireless power is an environmentalist’s dream because it can eliminate widespread use of disposable batteries. Americans purchase (and dispose of)nearly 3 billion dry-cell batteries every year。它们包含有毒物质,例如锂,汞,酸,铅,镍,镉和石墨。在垃圾填埋场中倾倒电池对环境有害,开采这些材料对工人,他们的家人及其社区来说是危险的。一旦电池旨在接收和存储无线电源,我们就会制造和处置较少的电池。
10.但是,与电池和电线相比,无线电源必须超级昂贵。
单个AA电池以50美分的价格提供1瓦小时的小时。一kilowatthour of power from a socket costs 10 cents. In other words, the power from a socket is 5,000 times less expensive than the power from a battery. If you replaced batteries with wireless power in a family home, you could easily save $200 to $300 per year, not counting the cost of the time you waste buying and swapping batteries.
Moreover, installing one wire to power a security sensor, thermostat, or door lock can cost over $500 per device. That’s more than the cost of power consumed by a 1-W device in 570 years. Mind you, a 1-W device would burn through the energy of one AAevery hour。
11。Ossia'sHatem Zeine has a deep-seated grudge against batteries.
不,但是他们的时间已经过去了!亚历山德罗·沃尔塔(Alessandro Volta)在1800年发明了第一台电池。对于观点,1800年,拿破仑·波拿巴(Napoleon Bonaparte)是法国皇帝。一次性电池过期要退休。尼古拉·特斯拉(Nicola Tesla)意识到这一点,我们也应该如此。是时候获得真正的无线电源了。