Electric & Hybrid Vehicle Processing Flashcards
7 cards from real CAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electric & Hybrid Vehicle Processing flashcards as text
A recycler dismantles an EV and wants to resell the electric drive motor. Before listing it as a serviceable core, which test should be performed to verify winding integrity?
Answer: Megohm insulation resistance test between each phase winding and the motor housing
A megohmmeter test verifies that winding insulation has not broken down to ground, confirming the motor is safe to resell as a functional core.
State right-to-repair considerations for EV battery packs primarily affect automotive recyclers because:
Answer: Proprietary BMS software locks may prevent recyclers from resetting or testing recovered packs without OEM tools
Many OEM battery management systems use encrypted software, requiring OEM scan tools or defeating access restrictions to read SOH data or reset pack configurations for reuse.
When an EV battery pack experiences an internal short and enters thermal runaway, water application is controversial primarily because:
Answer: Large volumes of water are needed and it generates steam and toxic gas but does not stop the internal reaction
While water can cool the exterior and suppress flames, it cannot stop the exothermic internal reaction; massive quantities are required, and toxic steam is generated in the process.
An automotive recycler cataloging EV parts notices the onboard charger (OBC) label shows '7.2 kW, 240 V AC.' This means the OBC is designed to:
Answer: Accept Level 2 AC power and convert it to DC at up to 7.2 kW to charge the traction battery
The OBC is an AC-to-DC converter that takes Level 2 (240 V AC) grid power and converts it to the DC voltage required by the traction battery at a maximum rate of 7.2 kW.
Which OSHA hazard communication standard requires automotive recyclers to maintain Safety Data Sheets (SDS) for EV battery electrolyte and inform workers of its specific hazards?
Answer: 29 CFR 1910.1200 (HazCom / GHS)
OSHA's HazCom standard (29 CFR 1910.1200) requires SDS availability and worker training for all chemical hazards in the workplace, including battery electrolytes.
A CAR recycler recovers copper wiring harnesses from an EV high-voltage system. Before selling as scrap copper, the recycler must ensure:
Answer: All high-voltage connectors are physically separated and any residual charge is confirmed absent
Even disconnected HV wiring harnesses can retain trapped charge in capacitive connectors; physical separation and voltage verification protect scrap buyers and transport workers.
Which emerging industry standard specifically addresses end-of-life EV battery testing, grading, and data transparency requirements to facilitate second-life reuse markets in the US?
Answer: SAE J2983 (Health Monitoring of Lithium-Ion Batteries)
SAE J2983 establishes protocols for monitoring, grading, and reporting battery health data to support transparent second-life and recycling market transactions.