Pawan Munjal backed Exponent reveals the tech that makes 15-min rapid charging a realiy

economictimes.indiatimes.com:

EV startup, Exponent Energy has showcased its proprietary energy stack — battery pack, charging station and charging connector — that together claims to offer 15-minute rapid charge. Exponent claimed that EVs powered by its stack are 30% more affordable due to optimised battery capacity which are 30% smaller, and 5 year financing (powered by 3000 cycle life warranty). Additionally, the company claimed, 15-minute rapid charging reduces EV charging cost by 33%. “At Exponent, we’re building the future of energy that combines cutting-edge engineering with real world economics, and our off-board thermal management system is a testament to that belief. For everyone to go electric, consumers need EVs that charge faster, last longer, and cost lesser. Our unique twosided approach to 15-minute rapid charging makes EVs last 3 times longer and cost 30% less than conventional EVs," said Arun Vinayak, CEO and Co-founder, Exponent Energy.

The tech behind 15-minutes chargingAccording to Exponent, its energy stack addresses two key problems that, for decades, prevented rapid charging on LFP cells – Lithium plating and Extreme heat. When charging a cell, Li-ions flow from the cathode to the anode and get absorbed. The faster you charge, the more ions flow, leading to crowding around the anode. If left unchecked, this crowding leads to lithium plating, resulting in significant cell degradation. Exponent claimed that it solved this problem through a combination of their Battery Management System (10 times more accurate than industry standard), Virtual Cell Model and Dynamic Charging Algorithms. «This allows them to proactively sense Lithium