Kuaidi Technology reported on August 11 that a car blogger issued an article saying that the super fast charging of electric vehicles is a gamble by car companies.
Bet that consumers cannot use ultra-fast charging every time they charge.
Bet that there are not many 4C and 5C charging piles (ultra-fast charging) now, and a large number of users need to use 1C~2C charging or 0.
1C home charging.
, 
, the blogger cited a charging study by China Automobile Research Institute and Tianjin University as an example.
The results showed that the battery’s internal resistance declined little after 1C charging +1C discharging for 1500 cycles.
the 2C charging +1C discharging attenuated slightly more, but it can still be used.
4C charge +1C discharge has exited the test after 1100 cycles because the battery was scrapped.
6C charge +1C discharge charge has been scrapped after 700 cycles.
, In addition, the blogger also introduced that the ultra-fast charging battery pack has a large amount of heat.
With a charging power of 500kW, 10% of the energy will be emitted through the heat of the battery cells.
In order to avoid high temperatures, an air conditioning system is needed to cool down during charging.
However, even if the vehicle currently uses the top-of-the-line 45CC air conditioner compressor with a maximum cooling capacity of about 15kWh, it still cannot meet the heat dissipation needs of the battery pack.
In the long run, the battery will rapidly decay under high current and high temperature pressure.
Finally, the blogger also praised, which ultra-fast charging car company is willing to announce the actual attenuation data of the battery pack under the battery pack 4~5C ultra-fast charging and 1C discharge conditions?, 
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