The transmission efficiency is up to 90%, a new breakthrough in wireless charging technology, and the charging direction can be adjusted automatically

根据美国媒体技术XPLORE，最近，芬兰阿尔托大学的研究人员设计了一种新的无线充电系统，可以同时对多个设备充电。

According to US media tech Xplore, recently, researchers at Aalto University in Finland designed a new wireless charging system that can charge multiple devices at the same time.

通过设计无线充电系统中发射机的核心部件天线线圈，研究人员实现了无线充电系统无需首先定位充电设备即可直接充电，并可在设备移动时自动调整充电方向。

By designing the antenna coil, the core part of the transmitter in the wireless charging system, the researchers realize that the wireless charging system can charge directly without locating the charging equipment first, and can also automatically adjust the charging direction when the equipment moves.

世界各地的研究人员正在研究免费无线充电，这可以使智能设备摆脱充电线路的限制。目前，最常见的无线充电解决方案包含一些复杂的控制和检测功能。

Researchers around the world are working on free position wireless charging, which can make smart devices get rid of the restrictions of charging lines. At present, the most common wireless charging solutions contain some complex control and detection functions.

例如，充电系统的能量发射器通常需要检测充电设备及其位置，然后才能确定向设备发送能量的方向。此功能通常由摄像头或传感器实现，这将增加变送器的体积和成本。

For example, the energy transmitter of the charging system usually needs to detect the charging equipment and its location before determining the direction of sending energy to the equipment. This function is generally realized by camera or sensor, which will increase the volume and cost of the transmitter.

阿尔托大学的研究人员已经设计了一种基于特殊双螺旋线圈的全方位无线能量传输系统（WPT）。通过在各个方向创建功率传输通道，不再需要在变送器上安装摄像头或传感器。当需要充电的设备移动时，无线充电系统会自动调整充电通道。

Researchers at the University of Alto have newly designed an omni-directional wireless energy transmission system (WPT) based on special double helix coils. By creating power transmission channels in all directions, it is no longer necessary to install cameras or sensors on the transmitter. When the device requiring charging is moving, the wireless charging system automatically adjusts the charging channel.

例如，新配备无线充电接收器的移动电话、笔记本电脑和其他设备可以在为其电池充电时接收能量，或直接为设备上的应用程序供电，而无需将设备与充电系统接触或将设备放置在特定位置。

For example, mobile phones, laptops and other devices newly equipped with wireless charging receivers can receive energy while charging their batteries or directly power applications on the device without contacting the device with the charging system or placing the device in a specific location.

二

two

通过以特殊方式缠绕线圈，可产生两种磁场

Two kinds of magnetic fields are generated by winding the coil in a special way

阿尔托大学博士后研究员普拉萨德-贾亚拉图拉纳奇解释说："这个发射器的区别在于它是自调谐的，这意味着你不需要复杂的电子设备来连接嵌入在设备中的接收器。因为它可以调整充电通道本身，所以您还可以在无线充电系统可以达到的充电范围内自由移动需要充电的设备。"

Prasad jayathurathnage, a postdoctoral researcher at the University of Alto, explained: "the difference of this transmitter is that it is self-tuning, which means you don't need complex electronic devices to connect the receiver embedded in the device. Because it can adjust the charging channel itself, you can also move those devices that need charging freely within the charging range that the wireless charging system can reach. "

研究小组通过设计发射机中使用的线圈天线实现了这一效果。线圈天线缠绕在圆环体上，其结构为双螺旋结构。它们将产生两个电磁场：一个是环形的，限制在圆环中；一个是极性的，分布在环面之外。

The research team achieved this effect by designing the coil antenna used in the transmitter. The coil antenna is wound on the torus, and its structure is a double helix structure. They will produce two electromagnetic fields: one is annular and limited in the torus; One is polar and distributed outside the torus.

通过调整线圈的形状，可以增强这两个电磁场的强度。

The strength of these two electromagnetic fields can be enhanced by adjusting the shape of the coil.

无线充电系统通过电磁场传输能量。然而，接收器和发射器需要耦合。

Wireless charging system transmits energy through electromagnetic field. However, the receiver and transmitter need to be coupled.

电磁场耦合系数由研究人员确定。无论接收器的位置和方向如何，它都可以确保高效率，并且可以自动调谐。

The electromagnetic field coupling coefficient is determined by researchers. Regardless of the position and direction of the receiver, it can ensure high efficiency and can be tuned automatically.

这取决于充电系统的拓扑结构。自律实施需要最小化发射机和接收机之间的耦合，然后使用中继器调整充电方向。此时，必须保持发射机和中继器之间以及接收机和中继器之间的强耦合。

This depends on the topology of the charging system. The self-regulation implementation needs to minimize the coupling between the transmitter and the receiver, and then use the repeater to adjust the charging direction. At this time, it is necessary to maintain strong coupling between the transmitter and the repeater, and between the receiver and the repeater.

该系统由三对正交发射机和中继器组合组成，以确保全方位充电。

The system consists of three pairs of orthogonal transmitter and repeater combinations to ensure omni-directional charging.

尽管研究团队已经证明了这一设计理念，但仍然需要进行安全测试，以确认发射器产生的电磁场对人体无害。显然，由于该技术依赖于磁场，因此被认为是潜在有害影响主要原因的电场被最小化。

Although the research team has demonstrated this design concept, safety tests are still needed to confirm that the electromagnetic field generated by the transmitter is harmless to the human body. Obviously, because the technology relies on magnetic field, the electric field considered to be the main cause of potential harmful effects is minimized.

一旦设计被认为是安全的，然后应用到产品上，它将为许多人带来方便。

Once the design is considered safe and then applied to the product, it will be convenient for many people.

jayathurathnage说："真正的无线充电意味着更多的个人自由，因此人们不必担心在哪里给手机充电，也不必担心是否忘记插上电源。"

"Real wireless charging means more personal freedom, so people don't have to worry about where to charge their mobile phones or whether they forget to plug in the power supply," jayathurathnage said

该研究团队已经申请了该发射机的专利，并通过芬兰的parkzia项目开发了一种可用于工业领域的无线充电装置。

The research team has applied for a patent for the transmitter and developed a wireless charging device that may be used in the industrial field through the parkzia project in Finland.

四

four

结论：无线充电方便了人们的生活

Conclusion: wireless charging is convenient for people's life

无线充电的目的是使智能设备摆脱充电线路的限制，减少电力短缺对人们使用智能设备的影响。

The purpose of wireless charging is to make smart devices get rid of the limitation of charging lines and reduce the impact of power shortage on people's use of smart devices.

目前，除了研究无线充电的研究人员外，很多手机厂商也开始开发自己的无线充电方案，如小米、oppo等，随着各种新型无线充电方案的实施，人们的生活将更加便捷。

At present, in addition to researchers studying wireless charging, many mobile phone manufacturers have also begun to develop their own wireless charging schemes, such as Xiaomi, oppo, etc. With the implementation of various new wireless charging schemes, people's life will be more convenient.

资料来源：智慧

Source: Wisdom

Link：https://new.qq.com/omn/20210801/20210801A01SU900.html

update time：2021-08-01 10:37:05