Although smartphones have been frequently updated in recent years, with more and more screens and more functions, the performance of mobile phone batteries has not been greatly improved, resulting in most smartphone users having to charge at least once a day.
For bike enthusiast Jonathan Roberts, this feeling is more prominent, because riding and exercising often rely on mobile applications for navigation and health monitoring, and sometimes long-distance riding often takes several days in the wild, I can't find a place to charge my phone. To this end, he developed a very unique 3D printing bicycle mobile phone charging system AeroCharge.
“When you ride, you will feel the energy of the wind,†Roberts said. “What AeroCharge has to do is convert this energy into electricity to charge the mobile phone. One of the internal circuits of the product can be connected to the USB. The regulator of the socket. This means that it can control the current and voltage to prevent damage to your phone. All you need is a USB connection to your smartphone."
The AeroCharge system's fans are designed to be mounted to the front of the bike so that you can use as much wind as possible. Moreover, the fan blades are designed to be the most aerodynamic shape and angle, and they rotate and generate circuits whether the user is riding fast or slow. Of course, the faster you ride, the more power you generate.
According to Roberts, the AeroCharge system consists of four fans, each driving a small 2-volt low-inertia generator that is mounted on top of each other to provide maximum power output and efficiency. The system then adjusts the current and power to the voltage and current required by the phone to ensure that the battery is not overloaded and can be used with confidence.
Another cool feature of the AeroCharge is that the power it generates is fed into a separate battery instead of being sent directly to the battery being used on the phone. This way, even if you have stopped, your phone will continue to charge. Depending on the battery, the system can fully charge a mobile phone in about two hours.
It is understood that in addition to the electronics in the Aerocharge system, 99% of the parts are printed by Roberts using an Ultimaker 2 3D printer . The parts that are not 3D printed have screws and rubber grips in addition to the electronic components.
“For me, 3D printing is the best choice, it can quickly prototype my ideas, very convenient and economical.†Roberts said, “The prototype of my 3D printing is very accurate, high quality and good strength. In my opinion 3D printing is definitely the best way to turn your CAD model into a rapid prototype for testing."
To design this fairly innovative system, Roberts first hand-painted a simple sketch. When he had a clear idea, he started modeling with SolidWorks software and then printed it in 3D. As you can see from the video below, the 3D printed AeroCharge is still quite good.
Roberts said he would like to be a company to launch the product, but he admits that he is still a "newbie" in the design world, so he plans to fully improve his skills before creating such a business. Roberts expects the AeroCharge to be priced at £40-50 if it is produced in large quantities.
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