Addionics has introduced a battery architecture designed to increase battery operations and charging at low temperatures. The company lists extended mission capability, more usable range and faster charging among the benefits, and it names electric vehicles, trucks, defense drones, spacecraft and electric aviation as the applications.
According to the company, an EV can lose up to 40% of its range in severe winters, because a cold battery pack delivers less usable energy while the vehicle draws more for cabin heating, battery heating and thermal preparation before charging.
Electric semi-trucks demand large amounts of power from their batteries, Addionics explains, because a loaded truck carries substantial weight at a consistently high highway speed, and reduced cold-weather output could mean cutting the payload or avoiding routes in winter.
Freezing conditions can also shorten a defense drone’s mission time, reduce its operational radius and limit the power available for launch and maneuvering, according to the company.
On a space mission, keeping a battery at the right temperature in cold conditions costs heater energy, thermal hardware and additional stored energy, Addionics says. Cutting that heating requirement can create benefits across the whole spacecraft power system, including the battery, the solar array and launch mass.
The new battery architecture is built on the company’s Smart 3D Porous Current Collectors, which replace conventional flat metal foils with an engineered three-dimensional structure. The porous structure lets electrolyte and lithium ions move through the plane of the current collector, which Addionics says creates additional access pathways through the electrode, shortens effective transport distances, improves active-material accessibility and distributes electrochemical activity across a larger volume.
Lithium-ion cells fade in the cold because ion transport through the electrolyte and into the electrode slows down, raising polarization and cutting both the energy a pack can deliver and the current it can safely accept on charge. The usual remedy is heat, which costs energy and time. Addionics says its structure instead lets existing materials work more effectively at low temperatures without heating the battery or changing its chemistry.
Source: Addionics
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