Analysis of 800V Technology: The next generation of electric vehicles must be treated by the road, Porsche has started

Nowadays, it is the era of the development of new energy vehicles. All are all fighting electricity, then why didn’t I completely fuel? Because of this pain point for life, there is no solve, involving two factors in battery technology and charging technology.

So, throw a problem, do a big battery life, can you ease the battery life of the new energy car?

Can, but the brainstone is not the mainstream trend of the future.

Another way to improve charging efficiency, Porsche Taycan’s 800V architecture is already in use, the next-generation PPE platform Macan will also use 800V architecture; and Mercedes, Kia, Leak-like car companies also started Done.

800V architecture, this is the mainstream trend.

Charging can be very fast, but it also scored

a big premise, the luxury brand began to do electric vehicles, Jaguar I-PACE, Audi E-Tron, but Tesla shock Not large.

Porsche Electrochemicals start from the Mission E concept car to do high performance, highlights, in line with high-priced market demand. Then, it has earned earnings but the market is not large, you have to take a highlight.

Therefore, Porsche Tycan starts from the voltage level, rising directly from the existing mainstream 400V to the 800V level. So, Porsche Taycan became the first quantified electric vehicle using a 800V platform; in terms of power assembly, charging performance, acceleration performance, etc. became the next generation of electric power assembly system benchmark. Porsche Taycan is a complete 800V battery architecture, and the battery system uses 800V high pressure, electric power assembly system, including electric drive, power electronic device, charging system, etc. also adopt a system of 800V.

TAYCAN’s battery pack has a total of 33 modules, and each module has a total of 12 soft bag cores, provided by LG. The official endless mileage given by Porsche is 450km. To truth, Taycan’s battery life is very common, at the context of the technical conditions,Porsche also does not take a good technology to improve the battery life, then shorten the charging time.

Then, one of the 800V architecture is to make the charging performance greatly improve.

For charging, TAYCAN provides communication, 400V DC fast charge, 800V DC fast charge. It can be charged from 5% to 80% of power in 22.5 minutes, while the maximum power charging cannot be performed directly at the beginning, and the maximum power is charged when the power reaches 40%. When the charging power reaches 350 kW, it can be fully full of 30 minutes.

From the new energy car at this stage, this charging efficiency is very fragrant.

However, Taycan’s bus voltage is high to achieve the ideal fast charge effect on the supporting LONITY charging pile. When charging on ordinary charging piles, TayCon comes with 50 kW boost, and it can also realize the vehicle on conventional charging piles.

Taycan’s 800V architecture is really very fast, but it is a bit challenged.

Long-lasting performance requires a price

Another increase in the 800V architecture in performance, Taycan can accelerate the acceleration score within 10 seconds of 26 times, 7 Record the quick record of the four-door pure electric car ring in 42 seconds. Soon, and very lasting, this is very Porsche.

Faster, TAYCAN has two permanent magnet synchronous motors located at the front axis and rear axle, and the power of the front motor is 190 kW (Turbo S) ) And 175kw (turbo), post motor 335kW. In a comprehensive, Taycan Turbo and Turbo S have a 460kW (625 hp) rated output power, and the acceleration of 0-100km acceleration is 2.8 seconds.

The advantages of the 800V platform are obvious, equivalent, and current. Thus, the dynamic performance and battery performance attenuation under the 800 V architecture will be smaller. Excessive current will produce too much calories, and the copper wire can be finer, lighter, which helps to improve the thermal management level of the entire system.

So, in order to ensure that Taycan can have sustained and efficient power performance, Porsche designed a powerful and complex thermal management system for Taycan. Taycan’s system is mainly divided into refrigeration, high temperature, medium temperature and low temperature circuits, and can also choose heat pump circuit, a total of five groups.

There is a core manifold, which is constructed from different cooling circuits in 10. Complex thermal management system is not a problem with respect to Porsche, after all, the over-runner combustion engine is high; but the hot management system on Taycan consumes electricity to manage, mainly facing drive components, charging units and high voltage batteries. Waiting for components.

The drawbacks of this are that the energy density of the entire battery system will be affected.

So, TAYCAN’s life is low, and the 33-piece battery pack is about 630kg; then the thermal management system also reduces energy density, so the actual battery life may not be satisfactory. But subsequent Porsche may optimize the heat management system on the PPE.

Summary

The 800V architectural mass production used by Porsche Taycan is a beginning, and the industry benchmark is incorporated; and the Porsche Macan of the PPE platform will also be equipped with an 800V architecture. 800V has seen the hope of the new energy market, but

still needs to solve two problems, one is the popularity of fast charging piles, one is the improvement mileage.

Upgrade from 400V to 800V platform is hardware transformation, not OTA can be implemented. Therefore, there will be more companies to launch a 800V architecture or higher, in short, this is a trend in the future.