Chinese carmaker BYD unveils 5-minute EV charging
BYD's Super e-Platform reaches charging speeds of 1,000 kilowatts at 1,000 volts, twice as powerful as the fastest chargers available in the United States.
At the Shanghai Auto Show, the company claimed its electric sedans, the Han L and the Tang L SUV, can gain 250 miles of range in as little as 5 minutes.
By comparison, a Tesla can add 167 miles of range in 15 minutes at a 350 kW Supercharger.
'We have been pursuing a goal to make the charging time of electric vehicles as short as the refuelling time of petrol vehicles,' BYD founder Wang Chuanfu said.
BYD's Super e-Platform produces vehicles built on a 1,000-volt architecture, higher than current high-end EVs that run on 800 volts. Engineers were tasked with solving 'multi-physics challenges' in vehicle design to accommodate the power.
To manage heat, BYD created an 'all liquid-cooled megawatt flash charging thermal system' for thermal management while the vehicle is charging, to protect the battery.
The Han L utilizes an 83.2 kWh battery pack, while the Tang L harnesses a 100 kWh pack, made of lithium-iron-phosphate (LFP) cells.
LFP is said to offer better longevity than the more common nickel manganese cobalt (NMC) batteries used in the West.
To accomplish fast charging, BYD created Megawatt charging stations with a maximum output of 1,360 kW. The company said 4,000 of the chargers will be rolled out in China first, before appearing in global markets.
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