Evaluation of a Back-up Range Extender and Other Heavy-Duty BEV-Supporting Systems
Artikel i vetenskaplig tidskrift, 2022

Electric powertrains in terms of battery electric vehicles (BEV) are considered to be very interesting for heavy truck transportations. The challenge is the need for very large onboard energy and batteries. Long-term fuel cells (FCs) are considered an interesting support system for heavy-duty BEV, but in the short term, a range extender (REX) is also interesting. A heavy-duty BEV with 970 kWh batteries installed can handle 27% of all possible missions for the Scania fleet considering daily recharging. The back-up range extender (BUREX) can expand this figure to 55% utilized 20 days per year. If a customer has a few very energy-demanding use cases each year and does not want to pay for all the batteries needed, the BUREX may be an especially good option. The BUREX reduces life-cycle CO2 emissions, irrespective of the generation mix of the grid supplying the electricity used in vehicle manufacturing and battery charging. The BUREX reuse of the existing electric components of the BEV powertrain enables the installation of a 10% larger battery pack while being 80% less costly. The BUREX also adds redundancy to the BEV concept while recharging infrastructure improves, especially in rural places. These results indicate that the BUREX concept is a powerful short-term solution that could enable greater use of HD FC and BEV trucks while charging infrastructure and FC technologies gradually become more mature.

two-stroke

range extender

rex

fuel cell

FC

Författare

Lennarth Zander

Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem

Scania CV AB

Pontus Svens

Scania CV AB

Henrik Svärd

Scania CV AB

Petter Dahlander

Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem

World Electric Vehicle Journal

2032-6653 (ISSN)

Vol. 13 6 102

Ämneskategorier

Energiteknik

Farkostteknik

Energisystem

DOI

10.3390/wevj13060102

Mer information

Senast uppdaterat

2022-07-15