Recently, some netizens said that after using their car for a period of time, the fast charging power has decreased, so they asked the official customer service of ZEEKR about charging power, and the customer service said that the power can reach 200kw in the first 200 charges, and gradually reduce to 130kw in 201-500 charges, the reason is to protect the health of the battery.
This situation has also sparked controversy among netizens, and many people have questioned that if this is done, it means that fast charging is only useful in the early stage of purchase, and the charging power is getting lower and lower in the later stage, so what is the point of high-power fast charging?
In response to this controversy, ZEEKR Motors posted a note on its official WeChat public account "ZEEKR Service".
ZEEKR said that they did not artificially limit the charging power. They mentioned that the power battery will naturally decay with the increase of use time and the number of charges, which will also affect the peak power when charging, which is the regular physical property of lithium batteries. The charging and discharging management system of electric vehicles will comprehensively consider factors such as energy replenishment scenarios, station conditions, and battery power, and automatically carry out intelligent dynamic adaptation of charging power.
Translated, it is that the official side of ZEEKR does not limit the power, but because of the physical characteristics of the power battery, the decline in power is almost inevitable. In other words, not only ZEEKR, but also other car companies, don't look at the fact that everyone is pushing 800V now, but the decline in charging power is also inevitable with the use process.
When it comes to fast charging, it is inseparable from the topic of "fast charging and destroying the battery", from mobile phones to new energy vehicles, this theory seems to have been established, the attenuation of mobile phone batteries is a big deal to change a battery, electric vehicles are not so simple, fast charging hurts the battery, relative to slow charging, it must be correct, long-term use of fast charging models, in large samples, battery attenuation must be more serious than slow charging. However, due to the difference in battery density, battery material, battery temperature and BMS (battery pack management system), the degree of energy attenuation must be different in the models of each car company.
Long-term fast charging, just like the long-term fast running of the electrolyte, will cause the electrolyte in the battery to age, and the charging speed of the battery will drop sharply due to the charging current limit and continuous reduction, which is also very normal.
Therefore, at this stage, it is still recommended that car owners who can install home charging to buy pure electric models, long-term use of fast charging, for the attenuation of battery capacity and charging speed is certain, but the degree is different, and the use of many years of models, fast charging power will definitely decline.