Gemini Dual-Chemistry Battery Doubles BMW iX Range With Lower Nickel & Cobalt Use
Our Next Energy Inc. proves their Gemini battery doubles the range while reducing the use of rare elements.
Range is one of the biggest issues that stop many consumers from switching to electric for their next vehicle purchase. On the other side of the equation, rare elements like cobalt and nickel are making things tough for suppliers and carmakers. That’s where Our Next Energy Inc. (ONE) comes in. This Michigan-based start-up has just demonstrated to their main investor, BMW, that their new “Gemini” battery can effectively double the range of the iX while also using fewer rare elements.
The new battery tech is based on “dual-chemistry”, taking advantage of two different cell types – the increasingly common lithium iron phosphate (LFP) cell and high energy density anode-free cells. While the LFP cells meet 99% of daily trip requirements with 240km of range, the anode-free cells provide an additional 724km of range. Power is transferred between the cells via a high-efficiency DC-to-DC converter so the two cells can work together to deliver over 960km of range on the WLTP cycle. For context, the BMW iX delivers between 372km and 630km of range depending on specification. Getting close to that 1,000km mark seems to be the goal for much of the EV industry but it’s tough with the physical and financial constraints presented with battery technology at present. ONE says their Gemini battery tech offers a breakthrough, with more range than any other battery pack in the same 300-400 litres volume.
What’s more, the new battery chemistry used helps to reduce environmental impact and cost to the car companies. Lithium use is reduced by 20% graphite use is down by 60% while nickel and cobalt use is all but eliminated.
Currently, BMW i Ventures is an important investor in ONE, which is why the iX was used a demonstrator vehicle for this technology. ONE is currently refining the system to prepare the Gemini Dual Chemistry battery for commercial application. Improvements being worked on include increased efficiency of the DC-to-DC converter, improved control algorithms for the range extender cells, as well as further battery validation and cell development.
About the Author
Subhash Nair Written work on dsf.my. @subhashtag on instagram. Autophiles Malaysia on Youtube.
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