See the disassembly of 4th generation Toyota Prius 207.2 Volt Li-Ion battery

TIMELINE:
0:00 Introduction
1:27 Battery locations
2:54 Service disconnect plug grip
5:13 Battery Junction Block
6:00 Safety warning and recycling
8:40 Cover removal and Air Cooling
9:20 Battery Stacks and cells
10:02 Internal components and parts
11:02 Battery electrical connections and configuration
12:07 High Voltage Fuse location
12:25 Service disconnect plug circuit location
12:40 Contactor locations and functions
12:55 Battery ECU
13:30 External connection location
14:04 Battery cell voltages sensing and thermistor harness'
15:20 Battery cell voltage balancing
17:28 Battery cell voltages
20:00 Removal of battery components
21:00 Service plug grip harness removal
21:45 Negative cable disconnect
22:00 Current sensor disconnect
23:00 Battery Junction block removal
23:20 Contactor locations in the junction block
24:00 Junction block tray removal
24:28 Intake cooling air duct removal
24:50 Inlet air temperature sensor removal
25:31 Battery 125 A Fuse housing removal
27:27 Battery side shield removal
27:40 External harness disconnect
28:15 Battery ECU cover/shield removal
28:48 Battery ECU electrical connections
30:27 Battery thermistor locations
31:40 Battery ECU removal and notice
33:21 Removal of battery stacks
35:08 Ni-MH battery module dimension comparison
37:24 Lift out of battery stacks
38:20 Battery cell studs, voltage sense connections, bus bars, and nuts
38:56 Li-Ion cell side covers
40:24 What is serviceable?
41:04 Scan tool data reading battery state of charge (SOC)
44:00 Prius Prime (USA) battery configuration

ABOUT US
Weber State University (WSU) - Department of Automotive Technology - Ardell Brown Technology Wing - Transmission Lab. This topic is taught as part of our 4-year bachelor's degree program. For more information on the Weber Automotive program, visit: http://www.weber.edu/automotive

In this episode, we explore the 4th generation Toyota Prius 207.2 Volt Li-Ion battery system. This system is very different from previous generations of the 2016 - 2022 Toyota Prius. This episode covers High Voltage Hybrid Electrical Systems - Specifically the 4th generation Toyota Prius 207.2 Volt Li-Ion battery system. The 2017 Prius Prime 351.5 Volt battery is also discussed. This battery is rated at 0.75kWh. 0.75kWh / 207.5V = 3.6Ah rating. The system is protected by a 125A fuse.

This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see http://www.weber.edu/automotive/J_Kel...

QUESTIONS FOR TEACHERS:
1. What is different about the service plug grip on this battery versus previous generations of Prius batteries?
2. How is this battery cooled?
3. What is a battery stack?
4. What is the stack voltage?
5. How many battery stacks are in this battery?
6. How are the stacks wired (Series or parallel)?
7. What is the amperage rating of the battery fuse?
8. How are battery cell voltages monitored?
9. How are battery cells balanced is there is an imbalance after battery service?
10. Where is the battery current sensor located?
11. What warning is there on the battery ECU?
12. Are the sides of the battery cells dangerous to touch?
13. What parts are serviceable in the battery?
14. What was the battery state of charge when the engine shut off in the video?
15. At what battery state of charge will the engine re-start?

ADDITIONAL TRAINING FOR YOU
Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See http://www.weber.edu/evtraining

DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: http://advancement.weber.edu/Automotive