Truck power in small Slove­nia hub mo­tors

The Witness - Wheels - - ELECTRIC -

SLOVE­NIAN com­pany Elaphe in­tro­duced its lead­ing in wheel tech­nol­ogy to lo­cal and in­ter­na­tional au­to­mo­tive au­di­ence at the 2017 Shang­hai mo­tor show.

De­liv­er­ing the key­note ad­dress at the ninth Transmission Sy­po­sium hosted as part of the mo­tor show, CEO of Elaphe Propul­sion Tech­nolo­gies Go­razd Lampi said Elaphe’s in-wheel sys­tem is 10% more ef­fi­cient com­pared to the lat­est cen­tral elec­tric mo­tor and its in­verter.

“Our high torque mo­tors are based on the Elaphe elec­tro­mag­netic topol­ogy, which en­ables all of the de­sired prop­er­ties of an in-wheel elec­tric mo­tor. The core in­no­va­tion in the elec­tro­mag­netic part was de­vel­oped in co-op­er­a­tion with the ac­com­plished Slovene physi­cist, in­no­va­tor and philoso­pher An­drej Detela and is part of a 20-year-old vi­sion that has been brought to life by the Elaphe team.

“We con­stantly ex­pand the the­ory and in­te­grate new so­lu­tions into our mo­tors.”

Elaphe demon­strated this with a 4×4 fully elec­tric in wheel driven SUV on the show and a video of the SUVs dur­ing re­cent win­ter test­ing.

Dur­ing a pre­sen­ta­tion on in-wheel tech­nolo­gies, Dr Zhang Zho­jun from Shang­hai eDrive also pre­sented the many pos­si­ble ap­pli­ca­tions of in-wheel mo­tor tech­nol­ogy.

In Zho­jun’s study, even with not too re­cent data, one of the old Elaphe in-wheel mo­tor de­signs had the high­est spe­cific torque (27,8 Nm/kg).

Based on this in­de­pen­dent anal­y­sis, Elaphe cur­rently has the lead­ing in-wheel mo­tor tech­nol­ogy on the mar­ket.

Five hub mo­tors have been de­vel­oped, serv­ing from cars to trucks, with either air or liq­uid cool­ing sys­tems.

The small­est hub mo­tor for cars weighs only 23 kg, but makes 75 kW and 700 Nm, and as the mo­tors are elec­tric, all the power is avail­able from the first rev­o­lu­tion.

An air-cooled hub mo­tor suit­able for scoot­ers or trike cars weighs 20 kg and makes 20 kW and 225 Nm.

Elaphe com­petes with the Chi­nese com­pany Protean, but the Slove­nian com­pany said it can jump start a small to medium se­ries pro­duc­tion line or pro­vide sup­port to large se­ries equip­ment man­u­fac­tur­ers for high vol­ume pro­duc­tion any­where. Protean is still test­ing its pro­to­types.


Fu­ture car plat­forms: A flat bat­tery pack and hub­wheels al­low for true cus­tomi­sa­tion, as Mit­subishi showed with a mod­ern 1917 model (top).

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