The German energy storage business has invested an unspecified amount in compatriot Stercom Power Solutions, which offers the ability to transfer electricity, untethered, from a magnetic coil to a receiver coil on the underside of new-energy vehicles.<\/p>\n\n\n\n

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German commercial and industrial energy storage system manufacturer Tesvolt<\/a> has acquired a \u201csignificant minority stake\u201d in contactless electric vehicle (EV) charging<\/a> business Stercom Power Solutions, and says it aims to develop a 44 kW charging product.<\/p>\n\n\n\n

Untethered \u2018inductive’ charging \u2013 which involves power being transferred from a magnetic coil to a receiver coil in electric cars, buses and trucks \u2013 has been widely tipped to be the future of EV charging, Tesvolt said in a press release today, although the best inductive product on the market at present has only 3.2 kW of charging power.<\/p>\n\n\n\n

Scant detail<\/h2>\n\n\n\n

Wittenberg-based Tesvolt did not reveal how much it has invested in Bavarian firm Stercom \u2013 described in the press release as a \u201cthinktank\u201d \u2013 nor what proportion of the inductive charging business it now holds.<\/p>\n\n\n\n

Quoted in the press statement, Tesvolt joint founder and commercial director Daniel Hannemann said Stercom’s silicon carbide<\/a> technology operates inductive charging at 95% efficiency and enables charging with up to 20cm between the transfer coils. The latter, according to Hannemann, is \u201csomething no other provider on the market has been able to do.\u201d<\/p>\n\n\n\n

In the \u201cmedium term\u201d it may be possible to offer inductive supercharging at up to 200 kW, according to fellow Tesvolt founder, and chief technical officer, Simon Schandert. That level of performance would also mark a step change in performance for\u00a0solar cars<\/a>\u00a0which top up battery reserves while the vehicle is in motion.<\/p>\n\n\n\n

The Tesvolt release said carmakers Audi and BMW<\/a> are already installing inductive charging receiver coils in models and added, trial sections of road in Italy, France and Sweden have been fitted with sub-asphalt magnetic charging coils. BMW, said Tesvolt, has predicted blanket coverage of inductive charging \u2013 including in shopping mall forecourts, multi-storey car parks and at home \u2013 this decade.<\/p>\n\n\n\n

While the short, fast bursts of charging offered by inductive transfer would mean EV batteries need only be half their current size and weight \u2013 according to Stercom founder and CEO Robert Sterff \u2013 such recharging places heavy demands on battery lifetimes.<\/p>\n\n\n\n

As a result, said Sterff, extensive research is being made into the application of\u00a0solid-state batteries<\/a>, especially in Germany, with that technology said by the Stercom boss to be \u201cparticularly well suited\u201d to inductive charging.<\/p>\n\n\n\n

From: https:\/\/www.pv-magazine.com\/2021\/07\/07\/tesvolt-invests-in-development-of-cable-free-ev-supercharging\/<\/p>\n","protected":false},"excerpt":{"rendered":"

The German energy storage business has invested an unspecified amount in compatriot Stercom Power Solutions, which offers the ability to transfer electricity, untethered, from a magnetic coil to a receiver coil on the underside of new-energy vehicles. German commercial and industrial energy storage system manufacturer Tesvolt has acquired a \u201csignificant minority stake\u201d in contactless electric vehicle (EV) charging business…
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