Motion powered battery

Overview

For our engineering design project, we will be creating a motion powered battery. While there are some of these on the market with various designs, our motion powered battery will utilize the model of a shake flashlight. Ideally, we will be able to generate enough stored power to charge an electronic device (i.e. a phone) for a substantial amount of time.

Our three person team will design and build a magnet charging device that uses magnetic forces to generate an electrical current through a wire. We will be using an Arduino to measure the power output and determine if there is a need for a capacitor/resistor. Once the battery is charged, we hope to build power output terminals from the battery so that we can use it to power other things. We will put the entire design into a case to protect the external pieces from breaking.

Weekly Log

Team Members

• Katherine Laue
• Steven Schlau
• Henry Roberts
• John Fordice(TA)
• Denise Mell(Instructor)

Objectives

• Generate voltage using changing magnetic fields from the movement of neodymium magnets
• Connect the generator to a rechargeable battery that would store power to be outputted later to a wide range of devices
• Encapsulate design using 3D printed pieces for more efficient power generation

Barring Major Set-Backs:

• For presentation purposes, create LED visual to represent the storage of power in battery

Design

The visual design of our project will mainly consist of a tubular apparatus made of a PVC pipe section with a Teflon lined interior and a neodymium magnet that slides through the inside. Outside, there will be a copper wire coil wrapped around the tube which will be connected to the rechargeable battery, potentially with a resistor and/or capacitor between them. The battery will then have output terminals itself so it can change other devices in addition to being charged. Ideally, the battery will not have to be disconnected from our model to be able to charge other devices. This entire tubular design will be held in a more attractive encasing so as to look more desirable to a potential consumer.

Single Pipe Diagram

Electrically, our design will generate power as the magnet runs through the copper coil. Electrons will flow through the coil and then run into the battery where they will be created into chemical energy. In order to encase our pipes and wires, we will create a wooden box that will have 4 rectangular holes on both widths in order to slide shelves in. We will also have a wooden rectangular top that will be connected to the box by tape or a lever. In order to keep the pipes stable in the box, we will 3D print 4 shelves with 6 holes to slide pipes in. 3D printing the shelves will allow for more accurate holes which will make the ability to create and store power more precise.

• Beginning Presentation: https://docs.google.com/presentation/d/1kpignFUBYeWpITa3DcwuG8xqo7b4M8Ykv34dZw7oDcM/edit?ts=5a84f158#slide=id.p

Challenges

Initial Assessment

• Our main challenge is more of a potential issue with the overall motion powered set up. Most motion powered devices only require small power outputs such as crank or shake flashlights. Existing motion powered devices such as AMPY's Move need vigorous movements such as running to generate power in a reasonable time span. Our device may need to be shaken very hard or for a long period of time to generate enough current and electrical energy to a) charge the battery even a little and b) generate enough charge in the battery to use it to power other devices.

• Once we have built our design, we hope to refine it to make it smaller. This could be a potential challenge as we will want to still generate a similar power output but have a smaller design that could be more attractive to a consumer.

• If we can make the design smaller so we could fit more than one tube into the overall encasing, we would have to make sure that the magnets and the charges do not interfere with each other.

• We will need to experiment with different types of Teflon (sheets, spray, tape) to find the material that allows the magnet to slide through the tube with the most ease.

Updates as of 4/20/2018

• Talk about changes to design

Gantt Chart

Ethical Concerns

• talk about in terms of ethical concerns...

Budget

• PVC pipe - [link] - $14.54

• Wire [link] - $8.66

• Teflon (Different Types)- [link] - $9.09

• Neodymium magnet [link] - $17.66

• Rechargeable battery [link] - $9.99

• Box Container(Wood)- $4.99

• Capacitor [link] - $0.99

• Electrical tape [link] - $4.50

• Arduino - $24.20

Total: $94.92

Results

Project Recap

• recap

Future Considerations

• what would we change

Poster

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