Porsche's mobile energy storage Taycan is unveiled, a mobile nanny that recharges your battery anytime, anywhere!

On this basis, in order to consider the centralized charging effect and to charge multiple electric vehicles at the same time, Porsche cooperated with the German company ads-tec to produce 7 mobile charging trailers equipped with dedicated charging systems and buffer storage equipment. The capacity was expanded on the previous basis, equipped with a 2.1 MWh battery, which can charge 10 Taycan pure electric vehicles at the same time, and the number of charging times can reach 30 times. Because the design of this system itself is in accordance with higher requirements, the charging system can also operate normally in extreme weather (extreme weather of minus 40 degrees). This solution has been put into use in many events in Europe, with more than 5,000 charging operations.

Figure 2 Charging box

Audi's solution is to use the e-tron battery system (4,500 cells, 1,000 kWh capacity) with a cascaded utilization, providing a total charging capacity of about 700 kW on three charging ports, each with an output power of 150 kW and a storage capacity of about 1.0 MWh. Audi is working with ABB, and the purpose is to minimize the pressure on the local power grid during peak demand periods in Europe to earn the difference. This is also what Audi deployed at the Davos Economic Forum

Figure 3 Audi’s solution (there is a gif that I can’t upload anyway)

Of course, Volkswagen itself developed MEB. Since the charging power is 125kW, the entire single-station approach is designed. Currently, Volkswagen has achieved full coverage at the brand level.

Figure 4: Volkswagen's single-point mobile charging station

According to EV Volume data, Volkswagen is promoting new energy vehicles very quickly this year. In principle, there are currently two rigid problems:

1) Due to the decline in EV demand in the United States, Tesla has continued to expand in China and Europe, which directly covers the two main sales areas of MEB. The two companies face direct competition in subsequent volume increases. 2) The second is that if there are still many CO2 fines after investing so much money, this is not a good thing. So from the perspective of volume, we should be able to see large-scale promotion of MEB in Europe from September, and the time point in China should be March 2021, which may be a delay from Volkswagen's previous October 2020. This is a combination of the current software problems in the European market and the pull of China's own components.

Figure 5 Data of major global auto groups

Note: EV Volumes data, similar to GM, also includes China’s volume (SGMW), but is actually different from GM’s data.