Solar powered cell phone charging booth

Project Title

Solar powered cell phone charging booth

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

An estimated 1.1 billion people and around 14% of the world’s population don’t have the electricity facility. Pakistan is under developing country and Pakistan had a total installed solar powered capacity of 131.1 GW at the end of 2017 and have 5 nuclear powered plant. Due to increasing population in the Pakistan, there has been a corresponding increase in power demand without a reliable supply to meet such. The short fall in the supply of electricity in this country especially in the rural settlement where there are  no grid systems necessitates the need to explore renewable source of energy.

People find difficulty in charging their phone at public places like hospitals, metros, markets. There are many companies who are installing solar system to the houses, offices and other places. Our aim for this project is to target the public places and provide them charging points there.

Some of the areas of Pakistan don’t have the facility of electricity. In this era of science and technology, everyone has the mobile phones and computers but the people which are living in the areas where there is no facility of electricity or is a short fall of electricity will face the problem of charging. People in the hospitals, bus stands, shopping centers can face the problem of the charging. So, a free charging port will not be less than a blessing. Installing the charging booth at different will not only independently produce its power but it will also help the community at a small level.

Project Objectives

The main focus is to avoid the non-renewable resources and to switch to the other renewable resources. World is moving toward the non-renewable resources so Pakistan should also adopt these new technologies which are pollution free and environment friendly.

The objective of the product is described below:

• Pollution free product and environment friendly
• Cost efficient
• Plug and play facility
• Online check of the remaining battery and devices status

Project Implementation Method

First of all we brought a mono type solar panel with 180 W power,24V open circuit voltage and 9 A short circuit current. Our desired power is 150. We the help of connector we connect the panel with our designed buck converter with specification of 12 V and  8 A and maximum current capability 12A.this circuit convert our voltage of 24 to 26 is to 12  regular voltage and regulate our current round about 8 A .this is basically our charging circuit which charge our  two batteries of 135Ah.After this charging we take this output voltage to input our small buck converter which convert out 12 V to 5 V and current to 2.5-3 A .At the output of this buck converter a USB socket will charge our phone. Our booth can charge 3 type of android phone. To monitor this we add a device Node MCU which connects out project status with a server of google firebase which sends our charging percentage to our server and monitor the power consumption and rate of current and voltage on an android device.

Benefits of the Project

This project is a public service project and can be implemented on public places such as bus stops, shopping malls and metro stations.

Project is based on:

• Local equipment which makes is cost efficient
• The circuit design makes it possible that all mobiles charging simultaneously will be charged through fast charging
• The system is pollution free and environment friendly with no carbon footprint
• Solar input makes our project a major problem solution in energy crises of Pakistan
• An additional feature to our project is (Internet of Things) IOT based monitoring of the our system which includes an android application which will tell about the real time charging in battery and load attached at that time with the system

Technical Details of Final Deliverable

We have divided our projects in 3 deliverables. Stage 1 includes the research, calculations and simulations of circuit. Stage two includes the implementation of circuit and stay three includes the testing and integration of our project. According to the timeline of our project we have distributed our deliverables

Stage 1:

Calculation  

1. Total Energy At Output     
2. Mobile Charging Time     
3. Solar Energy                               
4. Backup Time                  
5. Battery Charging              
6. Efficiency         
   
   Simulation
7. Buck Converter Circuit 
8. Battery Charging and Discharging

Stage 2: Circuit Implementation

1. Buck Converter implementation   (PCB)
2. Charging Battery with solar input using buck converter
3. Finalizing the circuit with remaining components

Stage 3: Integration Testing

1. Debugging and testing
2. Outdoor Testing Of Project

Stage 4: Internet of things intergration

1. Android based application
2. Server communication

Conclusion:

The final product will be an IoT based charging booth powered by solar power. The product will be able to charge at least 5 and maximum of 10 devices. The system will be able to communicate with the server and tells us about the devices connected and the power remaining in the battery. We are also charging a battery through the panel so that it can provide the uninterruptible power at night.

The final dilverable includes the implementation of our project on a public place. (public place is still not selected and depends on the approval)

Final Deliverable of the Project HW/SW integrated systemCore Industry Energy Other Industries IT Core Technology OthersOther Technologies Internet of Things (IoT)Sustainable Development Goals Affordable and Clean EnergyRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	50000
solar pannel	Equipment	1	6800	6800
battery	Equipment	2	15000	30000
PCB	Equipment	1	5000	5000
Buck converter	Equipment	7	120	840
Other components	Equipment	1	5000	5000
Travelling	Miscellaneous	10	236	2360