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Further breakthrough for second life EV batteries

Approach raises the net resultant voltage to a level where up to 50 per cent more power can be drawn from the existing DC/AC inverter

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End-users benefit from further cost-reductions in £/kW and more versatility
End-users benefit from further cost-reductions in £/kW and more versatility

Connected Energy has enabled multiple second life electric vehicle (EV) batteries to be operated in series using a breakthrough technique.

 

The British battery storage developer claims the new technique delivers greater flexibility from its E-Stor storage technology, making the system more affordable and accessible to a wider range of industrial and commercial energy users.

 

According to Connected Energy, the approach raises the net resultant voltage to a level where up to 50 per cent more power can be drawn from the existing DC/AC inverter. Crucially, it also doubles the energy available.

 

“This an exciting and logical next stage in the development of our E-Stor battery storage technology. At a technical level, we have achieved our objectives by creating algorithms and strategies that enable us to control each battery separately via its ‘OEM’ battery management system when battery packs are connected in series,” said Matthew Lumsden, CEO, Connected Energy.

 

“This facilitates the safe, effective and efficient control of second life EV battery packs when operated in a series string.”

 

For end users, the benefits are two-fold, Connected Energy reports. Firstly, this offers a further cost reduction in £/kW. This is coupled with an increase in the versatility of EV battery packs when used in static storage applications.

 

Connected Energy is based in Newcastle upon Tyne with a technical centre near Norwich. Reuse of electric vehicle batteries is at the heart of its E-Stor battery storage solution.

 

Second life enables greater exploitation of the carbon and energy embedded in the manufacturing of the batteries, adding to the sustainability credentials of electric vehicles as well as the electricity system. Using second life batteries also reduces system costs – making energy storage systems financially viable for a range of customers.

 

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