Evaluation of Full Vehicle Thermal Propagation Test Methods
Transcript of Evaluation of Full Vehicle Thermal Propagation Test Methods
Evaluation of Full Vehicle Thermal Propagation Test Methods
Submission to IWG for GTR 20October 2021 –IWG #22
Scope
• Develop test procedure for full vehicle thermal propagation using rapid heater and nail penetration methodologies.
• NRC TRIM rapid heater• ISO 6469-1 nail penetration
• Evaluate test methods on various battery pack technologies.
• Chevrolet Bolt, Nissan Leaf, Tesla Model 3
Chevrolet Bolt Pack Thermal Propagation
• Experimental test to confirm lab operation of TRIM system
• Candidate cell criteria:• Accessibility• Ability to replicate with nail pen
TRIM
Note: DUT test condition not indicative of full vehicle configuration
Nissan Leaf Pack Thermal Propagation
• Experimental test to confirm lab operation of TRIM system
• Candidate cell criteria:• Accessibility• Ability to replicate with nail pen TRIM
Note: DUT test condition not indicative of full vehicle configuration
Next Steps
• Confirmed operation of TRIM system• Initial tests planned for late Fall 2021
• Rapid heater method to be conducted first, with nail penetration to follow.
Open Roof Test Facility – 21m x 18m
Preliminary Data From Initial Test (1 of 3)
• MY 2019 Chevrolet Bolt• Vehicle OFF during test• Wheels and tires removed for test• Heater ramp to 700°C over 10 seconds
• Heater powered off 12 seconds after time zero
• Outdoor Ambient Conditions• Temperature: 16°C• Wind: 4.5 m/s from the SW
Preliminary Data From Initial Test (3 of 3)
15
17
19
21
23
25
27
29
31
33
35
0 50 100 150 200 250 300
Tem
pera
ture
(°C)
Time (s)
Occupant Compartment Temperature
Front Rear
0
100
200
300
400
500
600
700
800
900
1000
0 50 100 150 200 250 300
Tem
pera
ture
(°C)
Time (s)
Battery Thermocouples
TC 01 TC 05 TC 09 TC 13 TC 15 TC 19 Heater