2023-12-18 08:48:00
At the beginning of 2021, the Chinese company NIO announced that its ET7 electric sedan might be equipped with a 150 kWh traction battery using a semi-solid-state electrolyte. By now, the company already has the results of an experiment involving such a battery, during which the car drove more than 1,000 km on a highway, and in April batteries of this capacity will begin to be mass-produced.
Image source: NIO
As explained Car News China, a semi-solid-state battery for NIO was developed by the Chinese company WeLion New Energy Technology, it provides a charge storage density of 260 Wh/kg at the whole battery level, and up to 360 Wh/kg at the cell level. This allows a battery with a capacity of 150 kWh to be only 20 kg heavier than a battery with a capacity of 100 kWh produced using more traditional technology, with unchanged overall dimensions. If the first one weighs 575 kg, then the second one weighs 555 kg. Unification in overall dimensions allows the new high-capacity battery to be installed on all NIO brand electric vehicles built on the NT1 and NT2 platforms. Let us remind you that the company professes the principle of express replacement of batteries at automatic stations, therefore all its electric vehicles are equipped with standardized, quick-release traction batteries.
On Saturday morning, the NIO ET7 sedan equipped with such a battery left Shanghai with two related company executives on board: Shen Fei, head of NIO Power, was behind the wheel, and NIO co-founder and CEO William Li was sitting to his right. . In fourteen hours they drove regarding 1044 km, while the indicator on the dashboard showed regarding 3% charge remaining. According to the head of NIO, previous tests have already shown the ability of a car with such a traction battery to travel 1,145 km without recharging.
Image source: WeLion New Energy Technology
The travel time in a recent experiment was 12.4 hours, the average electricity consumption was 13.2 kWh for every 100 km, the average speed reached 83.9 km/h, the maximum was limited to 90 km/h, almost 92 The car covered % of the distance using the proprietary NOP+ autopilot. The ambient temperature during the trip varied from minus 2 to plus 12 degrees Celsius, the elevation difference did not exceed 300 meters. The air temperature in the cabin was set at 20 degrees Celsius, the total load was 190 kg, taking into account two passengers and filming equipment. The trip was broadcast live and, including rest stops, lasted 14 hours. Even if the participants in the experiment wanted to continue it, replacing the battery with a charged one required no more than 3 minutes.
NIO representatives previously explained that a battery of this capacity with a semi-solid-state electrolyte would cost more than $40,000, which is comparable to the cost of many electric vehicles. Users have the opportunity to access it for less money when considering a battery rental subscription. Specifically, upgrading from a 75 kWh battery to a 100 kWh battery would cost $7 per day or $123 per month. Accordingly, a 150 kWh battery can be rented for several days for reasonable money, especially since it is compatible with all existing NIO electric vehicles that provide express replacement of traction batteries. At the end of this week, the company will also present its most luxurious sedan, the ET9, which will likely be equipped with a similar battery, at least for an extra charge. Mass production of the new type of batteries will begin in April next year.
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