1. Electrified Vehicle Durability

2. Vehicle Durability
Electrified vehicle durability is an important performance parameter for the long term environmental impact of electrified vehicles
Electrified vehicle manufacturers are managing durability to meet customer demands
It is possible to establish durability
Not every manufacturer is establishing durability in the same way
Differences could be due to product differentiation or because of different customer or geographic influences.
There are four major vehicle operating conditions that effect durability
Vehicle drive cycle or activity and inactivity (discharge rates)
Charging type and frequency
Ambient temperature during operation
Time – calendar life

3. Vehicle Durability
Four major vehicle operating conditions that effect durability
Vehicle drive cycle or activity and inactivity (discharge rates)
WLTP could be used
FEV reported WLTP would need to be modified to reflect real-world operation of EV’s
Running successive WLTP cycles could be too severe?
Charging type and frequency
Data available?
Are charging patterns developing over time? (changing)
Ambient temperature during operation
How much does ambient temperature effect battery durability?
Time – calendar life
Could testing be accelerated?
Coulomb counting or total energy delivered measurements?

4. Going forward
Options
Recommend that a GTR is appropriate for electrified vehicle durability and note that it will take time to obtain the information required. (cycle, charging, temperature, and time)
Initiate a new mandate?
EVE or WLTP or another IWG?
Extend the mandate of the EVE to continue research into electrified vehicle durability
Gather data to inform a future GTR
Recommend to the GRPE that it is premature to develop a GTR for electrified vehicles however, it should be revisited in the future.

5. Recommendation
Begin preparation of a report and recommendations for the GRPE regarding electrified vehicle durability
Engage all stakeholders in the development of the report and the recommendation
Drafting, review and submission within the timeline outlined in the EVE roadmap