Chevrolet Bolt EV (CBEV)

http://www.roperld.com/science/RoperChevyBoltEV.pdf
http://www.roperld.com/science/BoltEVFlyer.pdf

Contents

Introduction

Check the official documentation for items listed here to be sure and in case of changes.

Data (also)(also)(also)

Battery voltage:
360 volts
Battery cells:
LG-Chem nickel-rich lithium-ion
288 flat landscape cells of 3.75 volts each
96 groups in series of 3 cells in parallel (96 x 3.65V = 350V)
Battery weight:
960-lbs
Body weight:
815-lbs
Battery energy & power:
60-kWh usable energy & 160-kW peak power
Battery cooling:
liquid active thermal (6.9-liter of Dex-Cool)
Thin aluminum fins between cells connected to active liquid thermal plate at bottom.
Battery heating:
heating element for warm-ups in cold climates
Battery cost:
$15,734.29, part # 24285978
Torque:
266-lb-ft/360-N-m
Maximum launch angle = 30 degrees
Motor to wheels gear ratio:
7.05/1

Drive shaft goes through a hollow cylinder in the middle of the motor.
Motor maximum rpm:
8,810 rpm

Tires:

Michelin Energy Saver A/S 215/50R17 all season (tires code)

Fluids:
Heating & cooling cabin: 1.8-liters Dex-Cool
Battery cooling: 6.9-liters Dex-Cool
Power-electronics cooling: 3.9-liters Dex-Cool
Drive-unit fluid: 2.9-liters
Charging power:
7.2-kW 240-volts (90% or 100%)
50-kW CCS option (~90-miles in 0.5 hours)
Tesla-Wall-Connector to J1772 adapter

Charging times:

240-volts AC: 25-miles/hr (9 hrs full)
480-volts DC: (90-miles/30-minutes)
Motor power:
150-kW/200-hp
Efficiency:
128-mpge (3.80-mpkWh) city
110-mpge (3.26-mpkWh) hwy
119-mpge (3.53-mpkWh) total
Regeneration:
One-Pedal driving by L drive & steering-wheel paddle
Screen size:
10.2" diagonal in middle of dash & 8" diagonal in front of steering wheel
Rear-View Mirror option:
Rear camera "mirror"/mirror
Back-Up Camera:
Surround Vision with washer
Electric range:

238 miles EPA (~55 mph)
190 miles @ 75 mph
160 miles @ 93 mph

Communications:
Apple Car Play & Android Auto on smartphones
4G LTE Wi-Fi option
Safety options:
Forward pedestrian alert
Forward collision alert
Side blind zone alert
Rear cross traffic alert


Heated seats:
Front and Back
Driving modes:
Low/Drive
Regen Paddle
Power cord:
120-volts
Option: AeroVironment TurboCord 240-volts
Battery warranty:
8-year/100,000-miles
Warranty:
Bumper-to-bumper: 36,000-miles or 3-years
Powertrain: 60,000-miles or 5-years
Battery: 100,000-miles or 8-years
Cabin heater:
resistance
Wi-Fi option:
4G LTE
Roadside assistance:
OnStar
OnStar availability:
Yes
Air bags:
10
0->30 mph:
2.9 sec
0->60 mph:
6.5 sec
Weight:
3563-lbs
Length:
13' 8"
Width:
5' 10"
Height:
5' 3"
Ground clearance:
Front air dam: 6", Rocker panes: 7", Rear bumber: 8"
"Another important factor to consider with ground clearance is the distance away from the wheels that the bumpers hang out over the ends of the vehicle – this is often referred to as approach and departure angle. A lower ground clearance close to the wheels can still rub less on curbs and up steep driveways than a taller ground clearance higher away from the wheels."

Frontal area:
25.8 ft^2
Drag coefficient:
0.308
Turning Circle:
35.4'
Seating:
5
Cargo:
16.9 ft^3
56.6 ft^3 with back seats down
Three levels in trunk.
Release Date:
1st quarter 2017
   
Price:
LT: $37,495 & Premier: $41,780 including destination charge $875

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128 MPGe

110 MPGe

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Colors

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Premier Extra Features ($4,285)

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Packages

Choosing the Driver Confidence Package requires also choosing the Infotainment Package for Premier..

Fast-charging capability cost: $750

Miscellaneous

MPGe = 33.705 x miles/kWh
kWh/100-miles = 3370.5 / MPGe

VIN decoder

Bolt Ordering Guide

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Battery


960-lbs battery provides a low center of gravity.
Presumably the battery-cells cooling system is the same as for the Voltl.
The coolant is Dex-Cool.

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Charging

Power curve of a CBEV charging from ~50% to 100% by an OpenEVSE P50A charging station:


The x-axis is time of day in 24-hours and the y-axis is charging power in watts.

The charging time is ~4.5 hours and the energy supplied is ~31 kWh, for average power of ~6.9 kW.

Safety

Pictures


Drive shaft goes through a hollow cylinder in the center of the motor (coaxial).

"Chevy's rear camera mirror technology provides a live video feed to the rear view mirror. The camera quality is lower than what you'd see with a regular mirror. Fortunately, you can toggle between the video feed and a regular mirror."
http://insideevs.com/nhtsa-approves-rearview-mirror-camera-found-on-chevrolet-bolt-cadillac-ct6-phev/


"Chevy's 360-degree camera combines the feed of four cameras to create a bird's eye view of the car....the 10.2-inch infotainment display does make the low quality cameras look worse than smaller screens, since it's trying to scale the image to fit."

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The false floor has 3 positions:
1. It can be positioned flat so that the storage area is the same height, as the raar seats when flipped down.
2. At an angle (like in the photo below, which is only useful when trying to access the items below).items could be stored in this small space under the false floor.
3. It can be removed and stored upright at the front of trunk for one large storage space.

Many Pictures

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Bolt Range

Using the following data

the fitted equation for range versus speed is R(S) = 701tanh(S/21.0)exp(-S/61.1). This is an estimate of the Bolt range for constant speeds:


Note that the EPA range of 238 miles cooresponds to ~66 mph.

This curve compares the range the range-vs-speed curves for the Chevrolet Bolt EV to the two Tesla Model 3 curves:

https://insideevs.com/17000-miles-chevy-bolt-predicts-272-mile-range-video/

http://www.roperld.com/science/CBEVRoperTrips.pdf

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Bolt Regeneration

Drive and Low Regen are set by the shifter shown below. Both regeneration settings can be increased (Regen On Demand) by pushing on a paddle behind the steering wheel. The lowest curve, Low + Paddle, allow "one pedal" driving. The brake lights come on when enhanced regen is in effect.


Regen. Paddle on left of steering wheel

The L is at the bottom of the shifter is used to put the Bolt in high regeneration mode when the accelerator is let up. The paddle is shown on the left of the steering-wheel column.

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Electric Vehicles

Forums

References

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Movies

Awards

  1. 2017 Motor Trend Car of the Year
  2. 2017 North American Car of the Year
  3. 2017 AutoGuide.com Reader's Choice Green Car of the Year
  4. Green Car Reports Best Car to Buy 2017
  5. Car & Driver '10 Best Cars' List for 2017
  6. Green Car Journal 2017 Green Car of the Year
  7. Time Magazine 25 Best Inventions of 2016
  8. Popular Science 10 Greatest Automotive Innovations of 2016
  9. Detroit Free Press Car of the Year
  10. Automobile Magazine 2017 All Star List
  11. Motorweek 2017 Drivers' Choice Award-Best Car of the Year
  12. Autoblog Technology 2017 Car of the Year
  13. Digital Trend 2017 Alt-Energy Car of the Year

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miles/kWh = 0.0292 x MPGe
kWh/100-miles = 3370 / MPGe

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L. David Roper, http://www.roperld.com/personal/roperldavid.htm
7 November, 2017