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Narrator:
Today on "How it's made"...
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00:00:26,310 --> 00:00:32,137
Bicycle helmets -- letting
Safety go to your head...
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00:00:32,137 --> 00:00:38,103
Aluminum -- probably the most
Versatile metal around...
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00:00:38,103 --> 00:00:41,172
Car brakes --
We bring you breaking news
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00:00:41,172 --> 00:00:43,827
About how
They're manufactured...
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00:00:43,827 --> 00:00:45,137
And lithium batteries --
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00:00:45,137 --> 00:00:47,758
You'll get a charge
Out of this one.
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00:00:53,206 --> 00:00:55,758
If you're serious
About bike-riding,
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00:00:55,758 --> 00:00:58,586
You should also be serious
About safety,
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00:00:58,586 --> 00:01:01,034
And it all starts
With your head.
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00:01:01,034 --> 00:01:04,586
Today's bike helmets meet all
The required safety standards
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00:01:04,586 --> 00:01:07,896
And come in a wide range
Of colors and styles,
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00:01:07,896 --> 00:01:10,620
Which means
You can protect your head
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And look great doing it.
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A bicycle helmet is constructed
Of an exterior shell
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00:01:17,931 --> 00:01:20,724
And an interior one
Of polystyrene foam
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00:01:20,724 --> 00:01:23,620
Designed to absorb shocks.
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00:01:23,620 --> 00:01:26,793
Some designs for bicycle helmets
Are drawn by hand
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00:01:26,793 --> 00:01:29,000
And with
Computer-aided graphics.
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The design
Has to take into account
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That it is not on
A flat surface,
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But on a rounded one.
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00:01:34,206 --> 00:01:37,724
This creates optical deformities
That have to be corrected.
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00:01:46,034 --> 00:01:48,655
Fabrication begins
With the exterior shell.
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00:01:48,655 --> 00:01:51,413
This polymer sheet
Is heated in a heat former
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00:01:51,413 --> 00:01:54,206
At a temperature
Of 65 degrees centigrade.
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The mold lifts the sheet
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00:01:55,793 --> 00:01:58,862
And suctions it to fill
All the cavities of the mold.
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00:01:58,862 --> 00:02:01,172
This operation lasts about
One minute
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00:02:01,172 --> 00:02:02,862
And produces four shells.
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00:02:04,758 --> 00:02:07,068
Then, when cooled down
And hardened,
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00:02:07,068 --> 00:02:09,206
The four shells
Are cut by hand.
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00:02:15,034 --> 00:02:18,724
Ventilation openings are cut
With a heated wire apparatus.
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00:02:18,724 --> 00:02:21,068
These openings
Have been preformed
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00:02:21,068 --> 00:02:22,827
During molding of the shell.
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00:02:22,827 --> 00:02:26,172
The heated wire easily
And neatly cuts the polymer.
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00:02:30,482 --> 00:02:34,344
Next up, trimming the helmet
To eliminate excess polymer.
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00:02:34,344 --> 00:02:37,724
The circumference
Is manually cut using a router.
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00:02:44,000 --> 00:02:46,965
The edges are then sanded
To even them.
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00:02:50,172 --> 00:02:53,551
It is also possible to cut
The circumference of the shell
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00:02:53,551 --> 00:02:54,793
With a heated wire.
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00:02:54,793 --> 00:02:56,862
This operation
Takes more time,
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00:02:56,862 --> 00:03:00,310
But is more precise because
Of the resulting cleaner cut.
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00:03:09,793 --> 00:03:12,137
Now they're going to fabricate
The foam interior
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That will be placed
Inside the shell.
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00:03:16,206 --> 00:03:18,413
It's made
Of polystyrene beads
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00:03:18,413 --> 00:03:20,896
That will expand
And bond together.
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00:03:25,758 --> 00:03:29,034
This expander increases
The volume of the granules
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00:03:29,034 --> 00:03:30,344
That fall into it.
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00:03:30,344 --> 00:03:32,000
Steam and an agitator
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Let the polystyrene beads
Expand uniformly.
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The granules are now ready.
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00:03:37,241 --> 00:03:38,689
The contents of this bin
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Will be able to produce
About 20 foam pieces,
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00:03:41,379 --> 00:03:43,655
Which will take shape
On these molds.
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The press closes up for
The six minutes that it takes
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To mold four foam pieces.
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00:03:52,379 --> 00:03:56,413
The particles fuse with steam
Before being cooled with water.
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00:03:57,758 --> 00:04:00,137
The foam is removed
From the mold.
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00:04:00,137 --> 00:04:03,000
Forms are produced
For different helmets.
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00:04:06,344 --> 00:04:07,827
Fusing of the particles
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Has welded the granules
To one another.
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00:04:11,000 --> 00:04:12,724
Depending on the helmet model,
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00:04:12,724 --> 00:04:15,310
Openings have to be made
With this heat iron
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00:04:15,310 --> 00:04:20,379
To allow for installation
Of an air-vent accessory.
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00:04:20,379 --> 00:04:22,620
All that remains is to make
The adjustment pads,
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00:04:22,620 --> 00:04:25,413
Cut with
This press-powered stamper.
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00:04:28,896 --> 00:04:31,448
The adjustment pads
Are held in with velcro
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00:04:31,448 --> 00:04:33,827
To allow easy adjustment
Of the helmet.
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00:04:33,827 --> 00:04:36,586
This allows the cyclist
To change the foam pads
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00:04:36,586 --> 00:04:38,413
For greater comfort.
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Inserting the straps calls
For good manual dexterity
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And takes only a minute.
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00:04:55,724 --> 00:04:59,310
The shell and the polystyrene
Foam liner have to be joined.
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00:04:59,310 --> 00:05:01,862
They're adjusted
One inside the other,
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00:05:01,862 --> 00:05:04,448
Then solidly secured
With adhesive tape.
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00:05:04,448 --> 00:05:06,827
The helmet is now completed.
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00:05:08,724 --> 00:05:11,827
And now it's ready
For packaging.
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00:05:11,827 --> 00:05:14,172
The safety helmets
Have to be certified,
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00:05:14,172 --> 00:05:17,344
Guaranteeing their safety,
And conformity tests are done.
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At least one helmet in 500 will
Undergo this destructive test.
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Here, it drops vertically
Onto a piece of steel.
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This facility can produce
Up to 4,000 helmets daily
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In hundreds of models
And over 500 variations.
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Narrator: take a look around,
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And you'll find
This wonder metal everywhere,
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In everything from screen doors
To jet planes.
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Aluminum
Has so many applications
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00:06:00,586 --> 00:06:02,724
Because it's light and strong,
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00:06:02,724 --> 00:06:05,620
And it's corrosion-
And crack-resistant.
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00:06:05,620 --> 00:06:09,758
Producing aluminum is costly,
But it saves money over time.
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00:06:14,034 --> 00:06:16,068
Aluminum --
So widely used today,
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00:06:16,068 --> 00:06:18,724
And the world's
Most abundant metallic element,
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Does not occur
In a natural state.
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The most available source
Of aluminum is actually bauxite.
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Bauxite is mainly mined
In tropical countries.
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00:06:31,931 --> 00:06:35,758
The aluminum atom in bauxite
Is bonded to oxygen molecules.
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These bonds have to be broken
By electrolysis
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To produce pure aluminum.
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Bauxite is carried by rail
To the plant,
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Where it will be crushed.
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Then, through
A chemical transformation
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Called the bayer process,
Alumina is extracted.
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This is then roasted
In calciners
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To eliminate all moisture.
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00:06:55,862 --> 00:06:58,448
This is
The reduction facility.
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00:07:00,379 --> 00:07:03,034
This plant has 432 pots
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00:07:03,034 --> 00:07:05,827
Through which a powerful
Electric current will be passed
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00:07:05,827 --> 00:07:08,172
To produce electrolysis.
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00:07:11,172 --> 00:07:14,068
An overhead crane
Dumps alumina into the pots.
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00:07:14,068 --> 00:07:17,034
Then the electric current
From the anode
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Passes through the alumina
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That we see here
At the bottom of the pot.
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00:07:28,793 --> 00:07:32,896
Via the process of alumina
Reduction at 1,742 degrees,
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00:07:32,896 --> 00:07:36,827
The anodes lose volume
And will have to be replaced.
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00:07:36,827 --> 00:07:38,931
It's a continuous operation.
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Each anode has a life-span
Of about 20 days.
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Spent anodes are recovered from
The pot with this overhead crane
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00:07:50,344 --> 00:07:52,448
And carried off to be recycled.
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00:08:03,310 --> 00:08:07,103
They clean the aluminum rods,
Which will then be reused.
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00:08:13,758 --> 00:08:16,827
Here we see the crust formed
Atop the anode.
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00:08:16,827 --> 00:08:18,862
When the anodes are replaced,
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00:08:18,862 --> 00:08:21,551
The accumulated impurities
Have to be recovered
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00:08:21,551 --> 00:08:23,000
From the top of the pots.
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00:08:23,000 --> 00:08:25,655
This is accomplished
With these pincers.
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00:08:25,655 --> 00:08:28,655
Then a new anode is inserted
Into the alumina,
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00:08:28,655 --> 00:08:31,275
And electrolysis continues.
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00:08:33,689 --> 00:08:37,206
The electric current
Breaks the molecular bonds.
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00:08:37,206 --> 00:08:40,103
The heavier aluminum collects
At the bottom of the pot,
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00:08:40,103 --> 00:08:43,517
While the oxygen bound to
Fluorine is released as a gas,
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00:08:43,517 --> 00:08:45,517
Which is drawn off
And treated.
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00:08:49,827 --> 00:08:53,620
The liquefied aluminum remains
At the bottom of the pot.
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00:08:53,620 --> 00:08:56,827
It has to be recovered in this
Huge crucible with a tube.
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00:08:56,827 --> 00:08:59,482
The tube is dipped
Into the bottom of the pot,
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00:08:59,482 --> 00:09:02,241
And a vacuum system
Draws the molten aluminum
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00:09:02,241 --> 00:09:04,103
From the crucible.
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00:09:08,275 --> 00:09:11,206
The aluminum is recovered
In a short time.
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00:09:11,206 --> 00:09:13,620
Air is vacuumed
From the crucible
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00:09:13,620 --> 00:09:16,448
By a flexible pipe
Held by an operator.
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00:09:18,103 --> 00:09:20,137
The tube
Is finally withdrawn,
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00:09:20,137 --> 00:09:23,137
And the overhead crane dumps
Another quantity of alumina
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00:09:23,137 --> 00:09:24,586
Into the pot.
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00:09:24,586 --> 00:09:28,965
Thus, the aluminum-fabrication
Process continues uninterrupted.
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00:09:28,965 --> 00:09:31,413
The crucibles filled
With molten aluminum
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00:09:31,413 --> 00:09:33,689
Are transported
To the casting house.
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00:09:33,689 --> 00:09:36,965
Their contents are poured
Into holding furnaces,
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00:09:36,965 --> 00:09:39,413
That have a capacity
Of 60 tons.
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00:09:39,413 --> 00:09:41,482
In these very hot furnaces,
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00:09:41,482 --> 00:09:45,931
The molten aluminum
Is stored to await casting.
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00:09:45,931 --> 00:09:48,793
Finally, casting begins.
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00:09:48,793 --> 00:09:51,448
The aluminum can be
Semicontinuously
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00:09:51,448 --> 00:09:54,344
Vertically cast, producing
Ingots, sheets, or billets,
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00:09:54,344 --> 00:09:57,689
Or it can be directly cast
Into semifinished products.
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00:10:00,793 --> 00:10:05,172
The cooling of aluminum pieces
Is accelerated by water sprays.
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00:10:05,172 --> 00:10:08,931
The large, rectangular ingots,
Which can weigh up to 25 tons,
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00:10:08,931 --> 00:10:10,620
Will head for hot-rolling,
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00:10:10,620 --> 00:10:13,517
And eventually
Will be fabricated into products
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00:10:13,517 --> 00:10:16,241
Like aluminum foil.
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00:10:16,241 --> 00:10:18,862
From four to five tons
Of bauxite
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00:10:18,862 --> 00:10:21,517
Have produced two tons
Of alumina,
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00:10:21,517 --> 00:10:24,724
Which in turn produces
One ton of aluminum.
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00:10:27,482 --> 00:10:29,586
This particular plant produces
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00:10:29,586 --> 00:10:32,137
200,000 tons
Of aluminum annually.
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00:10:32,137 --> 00:10:35,172
Some other facilities
Can turn out as much
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00:10:35,172 --> 00:10:38,000
As 400,000 tons.
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00:10:48,068 --> 00:10:50,344
Narrator: if you've ever
Had to stop suddenly
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While driving at high speed,
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00:10:52,551 --> 00:10:55,137
You know that
Once you hit the brakes,
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00:10:55,137 --> 00:10:57,827
They can easily lock up,
Making you skid.
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00:10:57,827 --> 00:11:01,000
But with the sophisticated
Computer technology
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00:11:01,000 --> 00:11:03,275
Behind today's antilock brakes,
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00:11:03,275 --> 00:11:06,137
Skidding is becoming
A thing of the past.
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00:11:10,000 --> 00:11:12,413
Brakes are absolutely
Essential equipment
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00:11:12,413 --> 00:11:14,931
For every vehicle
To slow down and stop.
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00:11:14,931 --> 00:11:17,551
And brakes have remained
Practically unchanged
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00:11:17,551 --> 00:11:19,344
For the past 40 years.
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00:11:19,344 --> 00:11:21,586
Conventional disk brakes
Have pads
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00:11:21,586 --> 00:11:24,965
That press against the brake
Disk attached to the wheel.
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00:11:24,965 --> 00:11:26,482
These pads grip the disk
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00:11:26,482 --> 00:11:29,793
On only 15 to 30 degrees
Of its circumference.
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00:11:29,793 --> 00:11:31,965
This develops high heat,
Wheel skidding,
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00:11:31,965 --> 00:11:35,413
And results in premature wear.
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00:11:35,413 --> 00:11:37,068
The new floating disk brakes
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00:11:37,068 --> 00:11:39,241
Have two pads
Of friction material
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00:11:39,241 --> 00:11:41,724
On 360 degrees of the disk.
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00:11:41,724 --> 00:11:43,241
When the brake is applied,
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00:11:43,241 --> 00:11:45,793
Hydraulic pressure
Activates the diaphragm,
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00:11:45,793 --> 00:11:48,275
Which applies pressure
On the inboard pad,
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00:11:48,275 --> 00:11:50,793
Which is then pressed
Against the disk.
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00:11:50,793 --> 00:11:54,241
In this animation, the diaphragm
Movement is exaggerated.
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00:11:54,241 --> 00:11:56,896
However simple,
The design of this brake
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00:11:56,896 --> 00:12:00,206
Calls for some
Complex development steps.
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00:12:00,206 --> 00:12:02,241
It all starts
On the monitor screen
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00:12:02,241 --> 00:12:04,482
With computer-aided design.
195
00:12:04,482 --> 00:12:07,793
This powerful software creates
Objects in three dimensions,
196
00:12:07,793 --> 00:12:10,068
Which can be
Virtually manipulated.
197
00:12:12,206 --> 00:12:14,655
They then proceed
To digital analysis.
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00:12:14,655 --> 00:12:17,931
Here, digital models are
Submitted to repeated braking
199
00:12:17,931 --> 00:12:21,482
To verify that the parts
Conform to design objectives.
200
00:12:27,172 --> 00:12:29,379
The software verifies changes
In heat,
201
00:12:29,379 --> 00:12:32,275
The effects of vibration,
And resistance to breakage.
202
00:12:32,275 --> 00:12:35,034
The right choice of materials
Is critical.
203
00:12:42,551 --> 00:12:45,793
The electrical components
Also have to be created.
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00:12:45,793 --> 00:12:49,103
Here, we see the delicate
Construction of tiny sensors,
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00:12:49,103 --> 00:12:51,758
That measure the force exerted
By the braking system.
206
00:12:54,172 --> 00:12:56,034
The sensor is the main component
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00:12:56,034 --> 00:12:58,517
Of the intelligent
A.B.S. Braking system,
208
00:12:58,517 --> 00:13:00,344
Which functions
More efficiently
209
00:13:00,344 --> 00:13:02,517
Than traditional
Antiskid systems
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00:13:02,517 --> 00:13:04,586
And reduces braking distance.
211
00:13:07,379 --> 00:13:10,896
Next, it's the fabrication stage
Of prototype parts,
212
00:13:10,896 --> 00:13:13,482
Which will be tested.
213
00:13:13,482 --> 00:13:16,758
The machining of these parts
Must take into account
214
00:13:16,758 --> 00:13:19,206
The requirements
Of mass production.
215
00:13:23,586 --> 00:13:26,206
This high-precision,
Robotized machining
216
00:13:26,206 --> 00:13:30,103
Is done by computer-controlled
Digital machines.
217
00:13:30,103 --> 00:13:32,862
A liquid sprinkled
On the machine part
218
00:13:32,862 --> 00:13:34,827
Cools it during the process.
219
00:13:40,413 --> 00:13:42,793
The finished parts
Are precisely measured,
220
00:13:42,793 --> 00:13:45,965
Then fitted and assembled to
Form the total braking system,
221
00:13:45,965 --> 00:13:48,931
Which will be first tested
In the laboratory.
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00:13:53,344 --> 00:13:56,551
Brakes in full contact
Have a friction surface
223
00:13:56,551 --> 00:13:59,793
Six times superior
To traditional brakes.
224
00:14:01,965 --> 00:14:04,931
The use of aluminum
And composite materials
225
00:14:04,931 --> 00:14:08,206
Allow for a weight savings
Of 5.5 pounds per wheel.
226
00:14:08,206 --> 00:14:11,724
This affects roadholding
And reduces fuel consumption
227
00:14:11,724 --> 00:14:14,827
By .05 gallons
Per 100 miles.
228
00:14:16,551 --> 00:14:18,896
They proceed to power
And endurance tests
229
00:14:18,896 --> 00:14:22,551
On this dynamometer, in which
A brake and wheel assembly
230
00:14:22,551 --> 00:14:24,827
Act against
A large rotating drum.
231
00:14:24,827 --> 00:14:26,517
These lab tests are critical,
232
00:14:26,517 --> 00:14:29,931
Since they can detect any defect
In a braking system
233
00:14:29,931 --> 00:14:32,689
Before it's installed
On an actual vehicle.
234
00:14:43,724 --> 00:14:46,655
In order to evaluate the power
And endurance of the brakes
235
00:14:46,655 --> 00:14:49,344
In full application
Under extreme conditions,
236
00:14:49,344 --> 00:14:52,103
They were installed
On this porsche 911 turbo
237
00:14:52,103 --> 00:14:53,793
Entered in the motorola cup.
238
00:14:53,793 --> 00:14:56,172
They proved
Completely satisfactory,
239
00:14:56,172 --> 00:14:59,758
And the porsche went on
To record many wins.
240
00:15:03,758 --> 00:15:06,137
Once all validation tests
Are done,
241
00:15:06,137 --> 00:15:08,206
We move on
To the next step.
242
00:15:08,206 --> 00:15:11,000
Brakes are installed on
A production-model vehicle.
243
00:15:11,000 --> 00:15:12,793
With data systems,
244
00:15:12,793 --> 00:15:14,724
Engineers can observe
The performance of brakes
245
00:15:14,724 --> 00:15:18,034
Under all conditions
Thousands of times a second.
246
00:15:19,896 --> 00:15:23,137
Finally, engineers proceed
With actual braking trials
247
00:15:23,137 --> 00:15:24,517
With test vehicles.
248
00:15:24,517 --> 00:15:28,103
All that remains is to produce
Brakes on a large scale
249
00:15:28,103 --> 00:15:31,241
To supply auto manufacturers'
Production lines.
250
00:15:31,241 --> 00:15:33,448
And that's
The story of brakes,
251
00:15:33,448 --> 00:15:36,000
From original idea
To final product.
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Narrator:
There's nothing like the sound
Of a car engine starting,
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Especially when it's 15 below
On a winter morning.
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00:15:52,448 --> 00:15:56,275
Today's automotive batteries
Are smaller, more powerful,
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00:15:56,275 --> 00:15:59,689
And more efficient,
Even at extreme temperatures.
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00:15:59,689 --> 00:16:04,448
It's all thanks to the power
Of lithium-ion-cell technology.
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00:16:10,379 --> 00:16:13,448
While dissecting a frog
In 1786,
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The italian researcher galvani
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00:16:15,689 --> 00:16:18,482
Noted that when his scalpel
Touched a leg muscle,
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00:16:18,482 --> 00:16:21,241
It contracted from
An electric current produced.
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00:16:21,241 --> 00:16:24,000
Later, volta believed
The current was produced
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00:16:24,000 --> 00:16:25,551
By the metal instruments,
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00:16:25,551 --> 00:16:27,724
The animal being
Only a conductor.
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00:16:27,724 --> 00:16:30,896
To prove it, he stacked disks
Of zinc and copper
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Connected by conductors
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00:16:32,448 --> 00:16:35,482
And fabric impregnated
With an acid solution.
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00:16:35,482 --> 00:16:39,827
And so, in 1800,
The electric battery was born.
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00:16:46,448 --> 00:16:49,275
Batteries power all kinds
Of electric motors.
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00:16:49,275 --> 00:16:52,655
A new lithium-metal-polymer
Battery pack such as this one
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00:16:52,655 --> 00:16:55,206
Could soon power
An electric automobile,
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00:16:55,206 --> 00:16:57,137
As well
As a hybrid vehicle.
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00:16:57,137 --> 00:17:00,310
This battery will be made up
Of four components.
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00:17:00,310 --> 00:17:02,344
It all starts
With this lithium ingot,
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00:17:02,344 --> 00:17:04,517
Which weighs about 11 pounds.
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00:17:04,517 --> 00:17:06,655
It's transformed into
A thin sheet
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00:17:06,655 --> 00:17:11,862
By this extrusion press that
Applies 440 tons of pressure.
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00:17:11,862 --> 00:17:13,689
The press creates a sheet
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00:17:13,689 --> 00:17:16,689
That's only about
1/100 of an inch thick.
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00:17:16,689 --> 00:17:19,965
The whole extrusion sequence
Is closely computer-controlled.
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00:17:19,965 --> 00:17:21,758
Extrusion is now completed.
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00:17:21,758 --> 00:17:23,724
The metallic lithium sheet
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00:17:23,724 --> 00:17:26,379
Is the required 1/100 inch
In thickness,
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00:17:26,379 --> 00:17:27,827
Or 1/4 of a millimeter.
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00:17:27,827 --> 00:17:30,137
The sheet has to be
Further thinned.
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00:17:30,137 --> 00:17:33,206
Placed on a roller,
It is carried to the laminator.
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00:17:33,206 --> 00:17:36,000
At room temperature,
It's thinned once again.
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00:17:37,103 --> 00:17:39,965
In just 20 minutes,
The 11-pound ingot
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00:17:39,965 --> 00:17:44,000
Will have been transformed into
A thin sheet .01 inches wide
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00:17:44,000 --> 00:17:46,310
And some 655 feet in length.
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00:17:50,068 --> 00:17:53,034
This laminator completes
The thinning of the sheet.
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00:17:53,034 --> 00:17:55,620
The resulting
1 1/4 mile-long sheet
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00:17:55,620 --> 00:17:59,137
Will allow for the fabrication
Of 210 battery units.
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00:18:04,068 --> 00:18:06,206
Lithium is
A soft, sticky metal.
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00:18:06,206 --> 00:18:08,620
For this reason,
A polypropylene film
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00:18:08,620 --> 00:18:11,068
Has to be fixed
Onto the lithium sheet.
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00:18:11,068 --> 00:18:12,586
Without this protection,
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00:18:12,586 --> 00:18:15,689
The sheet would adhere to itself
And become unusable.
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00:18:15,689 --> 00:18:19,517
The sheet will be used to make
Individual battery cells.
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00:18:19,517 --> 00:18:22,103
Then these cells
Will be assembled,
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00:18:22,103 --> 00:18:23,965
In series and in parallel,
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00:18:23,965 --> 00:18:28,103
And inserted into modules
Of different shapes.
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00:18:28,103 --> 00:18:30,206
To make an individual
Battery cell,
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00:18:30,206 --> 00:18:32,068
The sheet
Has to be rolled up.
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00:18:32,068 --> 00:18:33,793
This automated spooling machine
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00:18:33,793 --> 00:18:38,758
Winds up the lithium film
In 26 revolutions.
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00:18:38,758 --> 00:18:41,379
The wound-up sheet
Is put into a vacuum oven,
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00:18:41,379 --> 00:18:44,448
Where the various layers
Adhere firmly to one another.
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00:18:44,448 --> 00:18:46,620
This step lasts
For about 90 minutes
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00:18:46,620 --> 00:18:48,862
At 176 degrees.
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00:18:53,344 --> 00:18:55,103
Here, a test is made.
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00:18:55,103 --> 00:18:58,172
Using a voltmeter,
The battery is checked to see
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00:18:58,172 --> 00:19:00,896
That it produces
The required 3.56 volts.
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00:19:00,896 --> 00:19:05,586
Any problem can be detected here
And corrected.
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00:19:05,586 --> 00:19:08,172
A final quality check
Is made with this caliper.
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00:19:08,172 --> 00:19:11,275
It precisely measures the
Thickness of the battery cell.
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00:19:14,482 --> 00:19:16,379
The battery cells
Are then stored.
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00:19:16,379 --> 00:19:19,034
Metallic plates
Are placed between them
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00:19:19,034 --> 00:19:20,827
For the entire storage period.
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00:19:25,482 --> 00:19:26,965
One more step remains,
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00:19:26,965 --> 00:19:29,793
And that's the metallizing
Of the contacts.
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00:19:29,793 --> 00:19:33,103
The battery cells are sent off
To a fabrication facility
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00:19:33,103 --> 00:19:36,379
In this container.
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00:19:36,379 --> 00:19:38,827
The container
Is robotically handled.
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00:19:38,827 --> 00:19:41,344
First, it's put into
A protective tank.
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00:19:41,344 --> 00:19:44,137
Then the metallizing
Of the contacts is done
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00:19:44,137 --> 00:19:45,965
By spraying on molten metal.
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00:19:45,965 --> 00:19:48,103
This takes
Just a few seconds,
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00:19:48,103 --> 00:19:50,551
Since the metal cools
Very quickly.
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00:19:56,103 --> 00:19:58,000
The battery is now finished.
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00:19:58,000 --> 00:19:59,965
It comprises four elements --
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00:19:59,965 --> 00:20:02,379
Lithium,
Which acts as the anode,
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00:20:02,379 --> 00:20:04,896
A metallic oxide cathode,
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00:20:04,896 --> 00:20:07,517
A dry
Solid polymer electrolyte,
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00:20:07,517 --> 00:20:10,655
And a metallic
Current collector.
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00:20:10,655 --> 00:20:12,206
All that remains to be done
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00:20:12,206 --> 00:20:14,931
Is the assembling of
The individual battery cells
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00:20:14,931 --> 00:20:16,206
Into a module.
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00:20:16,206 --> 00:20:18,862
It begins with the placing
Of individual cells
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00:20:18,862 --> 00:20:21,724
Onto one another
And isolating them with foam
340
00:20:21,724 --> 00:20:25,137
So that they do not touch
Each other.
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00:20:25,137 --> 00:20:27,724
These red sheets
Are actually heating elements,
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00:20:27,724 --> 00:20:30,206
Since the lithium-metal-polymer
Cells function
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00:20:30,206 --> 00:20:34,068
At temperatures of between
104 and 176 degrees.
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00:20:48,103 --> 00:20:50,931
Here, we see these modules
Of a battery pack
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00:20:50,931 --> 00:20:52,344
For a hybrid vehicle,
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00:20:52,344 --> 00:20:55,689
An automobile that works
With a gasoline-powered motor
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00:20:55,689 --> 00:20:57,655
And an electric motor.
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00:20:57,655 --> 00:21:00,310
This prototype battery
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00:21:00,310 --> 00:21:02,620
Was created for
A totally electric vehicle.
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00:21:02,620 --> 00:21:05,172
It surpasses heavy
Traditional lead-acid batteries
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00:21:05,172 --> 00:21:09,655
That can't develop the same
Amount of electrical energy
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00:21:09,655 --> 00:21:12,241
And have much shorter
Life-spans.
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00:21:12,241 --> 00:21:14,965
--captions by vitac--
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00:21:14,965 --> 00:21:17,724
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00:21:17,724 --> 00:21:19,965
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356
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357
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