Hurray for Batteries! Energy – It’s Everywhere!. 2 Where can we find batteries? In most of our...
Transcript of Hurray for Batteries! Energy – It’s Everywhere!. 2 Where can we find batteries? In most of our...
Hurray for Batteries!
Energy – It’s Everywhere!
2
Where can we find batteries?
In most of our favorite gadgets:
Watches
Flashlights
MP3 Players
Cell Phones
Computers
Electric/Hybrid Cars
Many, many others…
If you remove the batteries, these gadgets won’t work.
3
Electricity from a Battery
Batteries provide electrical energy
The energy comes from a chemical reaction
A complete circuit is required
4
Energy Stored in a Battery
Battery design stores energy.
Metals are separated to slow flow of electrons.
When connected to a device, electrons can flow.
5
Where’s the Chemistry?
Batteries are made of two different metals.
Electrolyte surrounds the metals.
A chemical reaction occurs.
Electrons flow from one metal to the other.
In batteries, chemical energy is converted to electrical energy
6
Primary and Secondary Batteries
Primary batteries (disposable batteries) are designed to be used once and thrown away..
Secondary batteries (rechargeable batteries) are designed to be recharged and used multiple times.
7
Battery Sizes - AAA to ME8Z
Batteries come in all shapes and sizes.
The chemical reactions power our favorite things.
8
Electric/Hybrid Cars
All Electric cars run on batteries only.Hybrid cars use gasoline and batteries.
Batteries are used to store electricity when power plants are not available.
Industrial Storage