Chevrolet Bolt EV High Voltage Components

TIMELINE::
0:00 Start
0:12 Video introduction
1:04 the underhood view with everything removed
3:56 the traction motor Drive Unit (DU)
7:28 the underhood cross-car beam
8:32 the Single Power Inverter Module (SPIM)
10:10 the High Power Distribution Module (HPDM) without fast charge option
11:29 the High Power Distribution Module (HPDM) with the fast charge option
13:35 the on-Board Charger Module (OBCM)
15:26 the Accessory Power Module (APM)
17:39 the Air Conditioning Compressor Module (ACCM)
19:20 the High Voltage 2kW Battery Coolant Heater
20:27 the 3-Phase cable connections
22:25 the HPDM to SPIM harness connection
22:57 the HV battery to HPDM harness connections
25:33 the HPDM to APM and OBCM connections
26:57 the DC Fast Charge receptacle to HPDM connection
32: 28 Video review

ABOUT US:
Weber State University (WSU) - Department of Automotive Technology - Ardell Brown Technology Wing - Transmission Lab. 2017-2019 Chevrolet Bolt EV high voltage electrical system components - A Youtube first! Finally, the Chevrolet Bolt EV high voltage system is broken down into nine individual components. See how they are all connected. This is the fifth in a series of videos on the 2017 Chevrolet Bolt EV

This video helps cover content related to the 2017 National Automotive Technicians Education Foundation (NATEF) Master Automobile Service Technology (MAST) Standard task 1.A.9 "Identify service precautions related to service of the internal combustion engine of a hybrid vehicle."

ADDITIONAL TRAINING FOR YOU

DONATE TO OUR DEPARTMENT

[keithmcdonnell]

A quick correction for you, the battery heater does function when CCS charging in cold conditions. The complaint is that charge rate is reduced when the battery pack is cold, and the heater is only 2 KW. The problem is that the battery heater shuts off around 64F pack temperature, and at that point maximum charge amps is still limited to less than 110 amps. This may seem like a lot, but the Bolt max charging amps with a warm battery is 150 amps. I think the logic was that when they set up the programming for the system, most publicly available CCS chargers maxed out at 100 amps, with a few 125 amp stations. Now with lots of 125 amp stations and 150+ amp stations becoming available they need to reprogram the battery heater to vary it's shut off point based on power available, so it stays on to a much higher pack temperature when connected to a higher power CCS station to maximize charging rate.

[bobsaturday]

heres a man that really does deserve the title "professor"

[jacobdykstra]

Thank you very much for taking the time to produce these videos. They are an amazing resource and fascinating to watch. This channel is an invaluable resource for anyone looking to learn more about emerging electric vehicle technologies.

[TheDisgruntledMechanic]

4 years after originally watching this and watching again because I just bought a 2023 Bolt EUV! Thanks again Prof. Kelly!

[plugandplayEV]

The smile at 0:29 when you say "we have disassembled *everything* " says it all! Thanks for sharing your hard work and passion for this project!

[josephfine]

Thank you for explaining these systems so clearly and thoroughly, that most technically inclined folks can understand it.
Very much appreciated, Professor!

[JustforFun-cbbo]

I am always excited to listen and watch these videos, thank you professor!

[andrewk]

I did not have an interest in hybrids, UNTIL I started watching your videos about them. I find the technology fascinating, and your presentation style makes it easy to learn. You are a wonderful teacher. Thank you for sharing.

[jimnunally]

Thank you Professor John Kelly! I come from a long line of mechanics in my family, my father taught me to remove, disassemble, and reassemble automatic transmissions when I was 10 years old. I have always been fascinated by the mechanics of motor vehicles. You are a brilliant person I really appreciate all of the videos I have watched. Now that I have a Bolt EV, I am a bit more up to date on the workings and engineering because of your wonderful instruction. Best to you !

[Jasona]

As a Chevy Bolt EV owner this video is very interesting, thanks for producing it!

[daveg]

Thanks Professor Kelly for another great engineering video. I was wondering if/when you would get back to the Bolt EV. Thank you to you and your students that take the time to share this technical detail with the average audience. As an engineer myself, greatly appreciated.

I have no doubt that if the DC fast charging conversion can be done, you'll figure it out. As you have a lot of resources, and drive to solve these interesting problems.

Tempting us with what appears to be a Model 3 in the background is amazing. From what I understand Tesla is kind of holding all service information close to their hearts. I'm always interested to see your next video.

[soccerfanyes]

Again, thanks to Weber State and Prof Kelly for this outstanding series. I am trying to watch all of them as a wealth of clearly presented, factual information is available!

[LeeBlaske]

My wife just bought a Bolt. Fantastic to watch this and get an idea of what all that stuff does. Thanks!

[prick]

👏👏👏, as a “GM world class “ & ASE master technician I must say that you are a selfless teacher ! If I lived on the other side of the country, I’d sign up to that facility just to watch you live ! Very impressed 👏👏👏👏

[mbyard]

Thank you for the explanation of the under hood components! As a Bolt EV owner, I am really enjoying this series. I’m definitely looking forward to the motor tear down.

[ottawacarl]

THANK YOU for making these!! I have been looking for many months for a long-form tear-down of a modern EV and could not find any. I thought they didn't exist until I stumbled on yours. This Bolt EV series is EXACTLY what I've been looking for. On top of that, you are EXCELLENT at explaining these things in a methodical, straightforward way. Thank you again, I really appreciate this resource.

[artiomcristioglo]

Good afternoon Professor John,
I just want to say how lucky your students are to have a teacher like you, I would stay in class for 24 hours to study all the information you can give, you were dizzy from my years of study in technical college in Republic of Moldova.
I would like to be a student again and I would like to have a teacher like you. Thank you
Kind regards Arty

[Airman..]

Thank you professor for this great demo, I never thought there is that much technology in an electric vehicle

[tomcruise]

Prof. Kelly & team - a great video series. Your presentation from puzzle pieces to a complete system overview running through stages, is just fascinating. It brings utmost clarity. Thank you for taking out time to make this series.

[st_us]

Your Content is GOLD. Loving the new EV/Hybrid cars you're having on the show.