POWER WALLTESLA HOME BATTERY

Submitted To Submitted By Mr. Sunny Khandelwal Brija Mohan (Seminar Coordinator) (12EEO7) Dept. Of Electrical Engg.

GOVT ENGG. COLLEGE AJMER

History On April 30, 2015, Elon Musk introduced the world to the Tesla Powerwall, a revolutionary solar battery, which can run the electric grid system with renewable energy instead of fossil fuels .The battery stores and smoothens solar energy generation during the day so that it can power electricity at nightthe innovative solar batteries from Tesla are a new solution that are aesthetically designed, reliable, scalable, and efficient

The Powerwall was originally announced at the April 30, 2015 product launch with power output of 2 kW steady and 3.3 kW peak, but Musk said at the June 2015 Tesla shareholders meeting that this would be more than doubled to 5 kW steady with 7 kW peak, with no increase in price.   .

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The Powerwall is a rechargeable lithium-ion battery product manufactured by Tesla Motors for home use.

Powerwall is a home battery that charges using electricity generated from solar panels, or when utility rates are low, and powers our home in the evening.

Powerwall also fortifies our home against power outages by providing a backup electricity supply.

Automated, compact and simple to install, Powerwall offers independence from the utility grid and the security of an emergency backup.

INTRODUCTION

Following functional benefits are suitable to understand using of Powerwall :-1. energy storage for a sustainable home2. Charges using solar panels3. Avoid paying peak Rates4. Solar electricity at night5. Go net zero6. Emergency backup

Why Powerwall ?

1.Energy storage for a sustainable homePowerwall is a home battery that charges using electricity generated from solar panels, or when utility rates are low, and powers your home in the evening. It also fortifies your home against power outages by providing a backup electricity supply. Automated, compact and simple to install, Powerwall offers independence from the utility grid and the security of an emergency backup.

• Panels convert sunlight into electricity that charges Power wall and powers your home during the day.

• The power wall bridges the gap between renewable energy supply and demand by making our homes solar available to us when we need it.

• Stores solar energy during the day, provides electricity to home at night.

• It includes a DC to DC converter to sit between a home's existing solar panels, and the home's existing DC to AC inverter.

2.Charges using solar panels

power companies often charge a higher price for electricity during peak evening hours than overnight when the demand is low.

Power wall can store electricity when rates are low and power our home when rates are high.

3.Avoid paying peak rates

4. Solar electricity at night

Power wall stores electricity generated by solar panels during the day and makes it available to your home in the evening.

This bridges the gap between peak solar and peak demand, allowing you to use your photons when you need them.

Combine solar panels and one or more Power wall home batteries to power your home independently from the utility grid.

A net zero energy rating means that your home produces as much energy as it consumes, but is still connected to the utility grid for periods of high demand.

5. Go net zero

In the event of a utility outage, Power wall can power your entire home or select appliances with an uninterrupted supply of electricity.

When installed along with solar panels, Power wall will allow your home to use solar generated electricity during a utility outage.

6. Emergency backup

Working of rechargeable lithium ion battery1. During charging, lithium ions (yellow circles)

flow from the positive electrode (red) to the negative electrode (blue) through the electrolyte (gray). Electrons also flow from the positive electrode to the negative electrode, but take the longer path around the outer circuit. The electrons and ions combine at the negative electrode and deposit lithium there

2. When no more ions will flow, the battery is fully charged and ready to use.

3. During discharging, the ions flow back through the electrolyte from the negative electrode to the positive electrode. Electrons flow from the negative electrode to the positive electrode through the outer circuit, powering your laptop. When the ions and electrons combine at the positive electrode, lithium is deposited there.

4. When all the ions have moved back, the battery is fully discharged and needs charging up again

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• Safety• Scalability• Capacity• Low cost• Low maintenance• Long life• Fast charging

POINTS OF PARITY OF POWER WALL

The Power wall has two models with 10 kWh capacity for backup applications and 7 kWh capacity for daily cycle applications. These capacities are sufficient to power most homes during the evening using the electricity generated by solar panels during the day.For the families with larger energy needs, multiple power walls can be connected to expand the capacity even higher. 7 KWh capacity power wall battery for 3000$10 KWh capacity power wall battery for 3500$Efficiency of power wall is 92.5% round trip when charged or discharged by a 400-500 V system at 2 KW. Each Power wall has a 6.4 kWh energy storage capacity, sufficient to power most homes during the evening using electricity generated by solar panels during the day.

CAPACITY OF POWER WALL

Key Features

Thank YouAny Queries?