最近，奥迪在洛杉矶宣布，其未来纯电动汽车将选择150千瓦直流快速充电器，此消息引发了广泛关注。
相比于通常所用的50千瓦组合充电器，该充电器有着高出三倍的能量，并且它将由数家德国汽车制造商同时开发和制造。一个覆盖全国的150千瓦充电网络将在美国建立。
但在2017年，奥迪还将提供无线充电。无线充电技术目前常被作为一些高容量的混合动力汽车的售后选项，但目前为止，还没有原始设备制造商提供具体解决方案。
我们试想一下，如果能负担得起一辆奥迪Q6e-tron四轮驱动系统,为无线充电额外负担一些费用，能够在家里充电，大多数人将会如此选择。
奥迪无线充电输出功率最初仅为3.6千瓦，但是以后会上升到11千瓦。在我们看来，任何家庭都应该提供电动汽车充电装置。
奥迪无线充电—无线充电取代直流快速充电，目前不可能实现，因为电网电力有限。AWC(奥迪无线充电）是奥迪正在开发的交流感应充电技术，作为一种替代，使得家庭充电及其方便。该公司希望在2017年推出无线充电。
拥有无线充电技术，能量随着地面充电板传输到电网。地面充电板有一个集成的初级线圈和一个逆变器(AC / AC变换器)。连接到一个16安培的单孔插座，第一代无线充电系统提供了一个3.6千瓦的充电功率，未来第二代系统可能升级到11千瓦。
当用户驾驶奥迪e-tron接近到充电板的几米范围之内，充电板会与汽车建立无线充电感应。然后用户会看到地板上的充电板的精确位置。车停在适当位置或者通过一个计时器，充电就会立即开始。通过目前奥迪生产使用开发的驾驶停车系统，该车可实现自动定位。用户可以下车，然后通过其智能手机启动停车程序。
充电之前，地板充电板的集成电机会提高初级线圈。这使得初级线圈和二级线圈的距离缩到最小，这将集成到奥迪e-tron地板地盘的前面一部分，与具体车型无关。地板的交变电磁场会引起汽车二次线圈在空气间隙中的交流电流。交流/直流转换器将电流送入高压电气系统，实现电池充电，并给另外的装置例如加热器或者空调传送多余的能量。用户可以随时终止充电，当电池充满电时，充电也会自动终止。
因为只有当车停在充电板并且线圈是主动的，才会产生交变磁场，所以不会对人或者动物产生危害。小的空气间隙可以防止磁场干扰电子设备。
第一代奥迪无线充电技术理想的使用场所是家庭车库或办公楼停车场。以后的版本可以通过不断改进，安装在公共基础设施，例如道路和停车场。
Audi attracted a lot of attention by announcing 150 kW DC fast charging for its future all-electric cars recently in LA.
That’s three times higher power than the most commonly used 50 kW for Combo chargers, and it will be developed and implemented by several German carmakers at the same time. A nationwide network of 150 kW chargers will be built in the U.S.
But at some point in 2017, Audi intends to also offer wireless charging too. Wireless charging tech is currently offered as an after-market option with some high volume plug-in cars, but no OEM has yet of offer the solution.
We imagine if you can afford a Q6 e-tron quattro, paying a little extra for the wireless option for home charging won’t be a problem, right?
Power output will be just 3.6 kW initially (which is not much for the 95 kWh battery found in the Q6 e-tron), but will go up to 11 kW later. In our opinion any home system should be capable of fully recharging the owner’s EV of choice in an overnight session.
Despite the advancement of technology, the floor plate still needs to raise the primary coil to improve the efficiency by shortening the distance mechanically.
“Audi wireless charging – wireless charging with alternating current
DC fast charging is virtually impossible in the private infrastructure due to the limited grid power. AWC (Audi wireless charging) is an inductive AC charging technology Audi is developing as an alternative that also makes home charging extremely convenient. The company hopes to launch AWC in 2017.
With AWC, the energy is transferred via a floor charging plate connected to the electric grid. The plate has an integrated primary coil and an inverter (AC/AC converter). Connected to a 16 ampere, single-phase outlet, the first-generation system offers a charging power of 3.6 kW, with higher powers of up to 11 kW possible in the next version.
When the customer approaches to within a few meters of the charging plate with his Audi e‑tron, the plate establishes radio contact with the car. The driver then sees the precise position of the floor plate on the display. Charging can begin immediately after proper positioning or according to a timer. With the piloted parking systems Audi is currently developing for production use, the car handles positioning itself. The driver can get out of the car and then initiate the parking procedure remotely via her Smartphone.
Prior to charging, an integrated electric motor in the floor plate raises the primary coil. This minimizes the distance between it and the secondary coil, which is integrated into the front section of the Audi e‑tron floor pan, regardless of the specific vehicle. The floor plate’s alternating electromagnetic field induces an alternating current in the car’s secondary coil across the air gap. An AC/DC converter inverts the current, which is then fed into the high-Voltage electrical system. There it charges the battery and powers additional consumers such as the heating or air conditioning as needed. The driver can interrupt the charging process at any time, and charging stops automatically when the battery is full.
Because the alternating field is only generated when a car is over the plate and the coil is active, there is no risk to people or animals. The small air gap prevents the magnetic field from interfering with electronic devices.
The first generation of the AWC technology is ideal for use in home garages or office building parking garages. A later version can be integrated in a modified form into the public infrastructure, such as into the asphalt of roads and parking lots.”
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