Although the war for EV with the longest range has ended well, a new weapon race has begun in place – and it’s all about the pace of charge.
In China, the world’s most recognized automotive and tech brands to see who can force electrons into the battery pack at very impressive rates.
However, if it is said that the industry’s giants can permanently carry the charging hours according to the internal combustion engine vehicle, the range is essentially deported to history books and the extra weight, resources and financial fines of large battery packs are no longer a problem.
But while the so -called megawatt Ultra Fast Charging (anything above 1,000 kW) is raising the language with the nature of the sheer physics, some believe that the road toward the two -minute top -up will not be so smooth.
During the recent electric vehicle battery technology workshop at Porsche’s R&D facility in Visach, the company talked about its path of cleaning and length, which has made a huge leap with the current generation and the future.
When asked about the current trend of megawatt charging, the development of Porsche develops in high voltage lithium -ion batteries, Carlos Alberto Cordova Tineo said when it is impressive, but they do not think it is the future of everyone.
He told me, “It is relatively easy to show such a level of ultra -fast charging on the test bench, but it is a very difficult task to work in the real world. There are many factors to consider when charging these rates.”
One of the major problems for Porsche is the longevity of the battery, as the company wants its cars to offer similar driving sensation over a period of 20 to 30 years when they are removed from the production line.
With aside the current residual values of Porsche’s EV, the company’s cars are usually very much discovered after the goods, many people become collecting items.
“All lithium-ion batteries suffer from the first 2-5 % capacity decline in the first few years, but it is our job to manage battery health for the rest of the vehicle,” Kordova Tyine added.
One of the factors that can lead to “sudden death” in the battery – or at a location where its performance is considered as rapidly as usual – is charging permanently at extreme rates, which Cordova Tyneo says lithium plating and battery performance may decrease.
He explained, “This is why we use steep charging, where the battery reaches the maximum charge, when it marks 70 or 80 percent of it and then slowly toward the end.”
The results of the real world
Although Porsche Electric Vehicle will not reject any new innovations in charging, it has not yet jumped on the megawatt bandwagen.
Otmar Bitsay, one of the company’s senior advisers and the company’s longest EV engineers, says charging data from China are “good for PR but not always in the real world”.
He added, “The physics of all this is complicated and before we consider the infrastructure you need to work.”
During a real -world demonstration in China, Inside the EV It has been reported that by BD’s Han L, who is the first person to use his Super E -platform with the latest flash battery, will be attracted to 767 kW power until it reaches 40 % in charge (SOC), remains stable at 633 kW until it reaches 60 % and then it will not fall to 60 %.
Overall, the car set a distance of 262 miles in about five minutes. Inspired things.
But despite the BD’s claims that rapidly charging the battery does not affect the warranty, there is not much time for us about this technology that after the warranty is over, what condition will happen after five or ten years.
In addition, most of these next generation, extremely sharp sugar packs use a lithium ion phosphate (LFP) chemical makeup, rather than use porchis in its technicians and mechanical models.
Right now, Porsche is working to recover 90 % of raw materials used in its NMC battery pack to reduce the dependence on mining rapidly.
On the other hand, the recycling of fast charging LFP batteries is widely considered a complex task and offers a weak business issue due to the low economic value of their content.
The matter of driving dynamics
The second key factor for Porsche is running dynamics, which is one of the most important pillar of the brand.
Even its daily electric SUV, strong mechanics, an absolute hot hot to drive and will give many modern sports cars a run for his money in the race circuit.
Battery Development Advisor, Ottmar Bitsa, says the overall weight, energy density and charging speed have to be a delicate balance act, which will be the perfect combination of Mark’s long wait in electric sports cars.
The next 718 Boxuster and Cayman are both to present the next generation of Porsche’s EV power trains, in which Bitsa claims that about 370 miles on the same charge will be “sufficient” for most sports cars.
The company’s current 800V architecture allows the maximum charging speed of 270 kW, which is enough to reduce the larger battery pack of the technician by 5 % to 80 % in just 22.5 minutes.
Expect that Boxter and Cayman will showcase small packs and new ship charging tech, which will result in the charge they will be seen even more quickly.
For most users, the concept of “being enough” is that when the topic of megawatt charging speed is reaffirmed, it feels that the additional technology and hardware needed to operate it, not only from the manufacturer but also to the charging networks, vehicle drives and the company’s bottom line.
An extremely fast future
Only This weekThe Society of Automotive Engineers in the United States has just released a new SAE J3400/2 standard that describes it as a standard connector and a car charge port charging 1,000 kW, which will confidence this technology.
However, as some critics have pointed out, even Chinese real -world demonstrations penetrate only a thousand kilograms for seconds during the charging session, before they retreat before taping in a stable 600 nasty kilo.
As a result, some industry insiders believe that producing a reliable network of 500 kW chargers would be more beneficial (and cheap), which can provide such speed as a large proportion of charging sessions.
It will be equivalent to an 8 to 10 minutes stops for many, which is equal to the time spent at most gas stations. White.
Finally, and perhaps most importantly, for a mark like Porsche, megawatt charging is still a relatively unknown, which has little research available on the longevity of battery technology or in the extreme weather conditions after many years.
“Increasing charging efficiency and increasing charge hours, describing Porsche physics and battery specialist Dr. Matthews Goldshahe is one of our preferences.”
He added, “But this is not the only thing, because we think the next generation of cars can hit the sweetest daily limit for the majority of our customers, rapidly charging speed, driving dynamics and lasting, reliable and reliable batteries.”
