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Peng explains 800V ultra-fast charging: no harm to humans, guaranteed battery life and safety

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Xpeng car released Xpeng S4 super fast charging release, this is the first domestic car pile mass production of 800V super fast charging platform, with Xpeng G9 can do car pile combination, to achieve the fastest charging 5 minutes, range of 200 km, charging 10%-80% into 15 minutes era.

The car is the first model to support the ultra-fast charging of the Xpeng S4 and is divided into two range versions, with a range of 702km for the single-motor model and 650km for the dual-motor model. both versions are equipped with a 98kWh ternary lithium battery pack.

Xpeng Auto today posted an article to answer some questions related to the Xpeng G9 800V super fast charging that we all care about.

Q:What is the impact of using 800V super fast charging on the battery life, will it damage the power battery?

A: First of all, the battery system 800V voltage is composed of multiple strings of monomer series, decomposed to each string of monomer, the voltage is not high, for the single cell, or in accordance with the regular voltage window, so a single dimension of voltage increase will not affect the battery life. Our battery system has perfect hardware and software protection function, which can protect the battery in time when there is abnormal voltage or current shock to avoid battery damage. Under regular charging and discharging conditions, the components in the battery system are designed according to the high voltage and overcharge specifications, which can ensure the life and safety of the battery.

Moreover, on the one hand, the battery cells are specially designed according to the overcharge rate, by applying advanced 6 series ternary materials and overcharge thermal design, we are the first to equip the battery cells with high rate charging technology on G9; on the other hand, our engineers have developed matching system design, charging and discharging control strategy and thermal management strategy to ensure that the battery cells meet the whole life cycle index of the battery during user use.


Q: The Xpeng G9 uses 800V super fast charging, for example, is it safe to charge in the rain?

A: Whether electric vehicles can be charged outdoors in the rain is a concern for many people. First of all, we for the charging port and connection system, after inserting the gun are to meet the national standard IP55 requirements, to ensure that even if the rainy day charging also risk-free, the new generation of liquid-cooled charging gun body protection capacity of the gun up to IP67, while the charging base design has a drainage structure, can be timely drainage of rainwater, will not affect the charging function and vehicle safety. In addition, the entire vehicle G9 high-voltage devices are to meet IP67 requirements, including the battery pack is to meet IP68 standards, to ensure that in extreme environments, there is no risk of water; and the vehicle will be real-time monitoring of insulation, to ensure that even if the leakage can be cut off at the first time; at the same time, all high-voltage components are connected to the body, to ensure that the high-voltage devices potential balance, even if the leakage is no risk of electric shock, you can rest assured that use Q

Q: When using 800V super fast charger, will it generate radiation to harm human body?

A: It should be clear that the Peng G9 high-voltage charging using DC power, DC power transmission direction is fixed, there is no frequency conversion. In other words, the magnetic field generated by DC is a constant magnetic field, not electrically excited electromagnetic radiation, there is no damage to human health, you can rest assured. Moreover, most of the electromagnetic radiation of electric cars comes from the electronic devices carried by the cars themselves, which is no different from fuel cars. Electric cars are a mature industry, and the listed products have passed strict quality inspection by the relevant government departments, and they are definitely qualified before they are put on the market, so you can rest assured again.

Q: What is the range of 200km with 5min charging? How fast is the general charging speed of new energy vehicles at present?

A: The current mass-produced electric vehicles are basically at the level of 400V, 250A, and the charging power is basically around 100kW, and the charging speed is about 5 minutes to increase the range by 50-60km. The advanced level of the industry is about 250kW, which is basically able to achieve a level of about 120-150 km in 5 minutes, which is already very fast. The Xpeng G9 can achieve a range of 200 kilometers in 5 minutes of charging, charging 10%-80% into the era of 15 minutes, in the world's mass production of electric vehicles can be said to be the fastest.

Q: Is it true that the faster you charge, the duller the power?

A: As we all know, the battery power is visually reflected through the SOC. Peng Automotive through high-precision sensors to collect the charging process data, the use of self-developed high-precision SOC algorithm to ensure that no matter how large the charging current, charging power, can ensure that the SOC deviation within 5%. That is, the actual battery power and the meter display power error are within a reasonable range, the user directly see the power is real and reliable, there will be no false indication of the situation. It is worth mentioning that the 800V high-voltage platform requires less charging current at the same charging power, which results in less charging loss in the charging circuit, more power is actually charged into the battery, and the charging efficiency is higher.

Q: Will the charging fee and service charge increase with the 480kW super fast charger?

A: The current rate is the same as the current rate.

Q: When will 480kW ultra-fast charging piles become popular and how long will it take for them to be widely rolled out?

A: On August 15, 2022, the first S4 ultra-fast charging station of X
peng Auto was completed in Guangzhou, and the 1000 stations of Xpeng's own charging station were completed, and this year, we will focus on building S4 ultra-fast charging stations in the top 10 cities of G9 orders. By 2023, we will provide the ultimate replenishment experience with S4 stations in key cities and along core highways. By 2025, we expect to build another 2,000 ultra-fast charging stations to provide car owners with intelligent, efficient and high-quality energy replenishment solutions to create a permanent residence replenishment station.

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