There is an incredible amount of current work now to enhance the performance of lithium ion batteries. The doctorate around the world, at this particular moment, provokes the eyebrows each, in an attempt to stimulate a few additional energy density points, fly a few minutes of shipping times, or add a few months to the age of a specific effective cell.
Then comes an emerging company called Breat Battery technologies with an algorithm promising to enhance the shipping speeds by more than 30 percent, while maintaining the age of these cells. It is part of the software package light enough to run it on old and small guaranteed systems enough to spread it through air updates. Best of all, it is not theoretically: Volvo will show this technology to come Es90 sedanAnd you can already find it on some smartphones.
Before we go deep into the details, let’s run quickly through what is happening inside the battery. The battery charging occurs when the ions flow from the anode to the cathode, then a journey through the electricity of the electricity while carrying the electrons with it. When the time to recharge, the process is effectively reversed, which leads to the return of these ions across the void as quickly as possible.
These processes are generated, and although some heat is good, much heat can damage the battery. The high temperature of your cells? The best condition, their age is reduced. The worst case? Well, you It is better to stand.
Shipping, and fast charging is particularly a delicate dance between wasting time by charging very slowly and damaging the battery by charging very quickly. In most EVS, this dance is designed with a search table.
Similar to the fuel injection tables that dictate the amount of juice that the cylinder should be pronounced for each combustion cycle in the engine, the battery tables are accurately says how applied the current to a specific cell in a certain temperature and the state of charging.
The problem is that these tables are not very good.
To use these tables, you should know the battery temperature and charging. Find these numbers, and the table tells you about the amount of current that can be applied to recharge the battery. Literally determines the charging curve of the cell. These tables have been developed by cells that make cells (such as Samsung SDI or LG energy solution) And the companies that put them in their cars.
The problem is that these search schedules can be mysterious, lacking specific values for each temperature and charging. The lack of accuracy of the data makes the results inaccurate. It is like trying to draw a beautiful flowing curve, but you can only use some straight lines.
The tables also are also flexible, covering a narrow range of temperatures. “If you start with a table, you are essentially closed in the dimensions of this schedule. Ian Campbell, CEO of the breathing company, said.
The battery tables accurately say the amount of current must be applied to a specific cell at a certain temperature and the state of charging.
In addition, cars are often lost a lot of energy to keep the batteries in the range of very narrow temperature to improve the use of the search schedule. “You need to heat the battery or calm it in order to prepare for this fast charging, and this also consumes a lot of energy,” added Björn Fridholm, a technician in the battery management in Volvo.
This brings us back to breathing and its own sauce. It still works with the same basic factors: voltage, temperature and current. Here, though, the software package (called breathing is called) determines the ideal charging rate with a much greater accuracy through the wider performance envelope which can be included in the table.
“Therefore, you end up to this amazing level of sincerity and activity in all time domains,” Campbell said.
To revive the metaphor from the top, instead of the serrated lines, you can now draw flowing charging curves that match more closely with the ideal performance of individual battery cells.
By unlike this curve, cars equipped with breathing technology will be charged faster without putting any additional pressure on the battery cells. By providing a wide range of data, cars can ship more quickly even when they are outside the perfect thermal windows.
How faster? Breathing and Volvo says this technique provides a 30 percent decrease at the time of charging when moving from 10 to 80 percent on a high -speed charger. But breathing algorithm also provides greater improvements when working outside the ideal conditions. At zero degrees Celsius, this shipping time was improved 48 percent.
Why not everyone does this? It comes to restrictions, the first is a deep understanding of individual cell behavior. To collect this data, breathing contains a pair of laboratories in London, where a sample of cells is tested by manufacturers.
Breathing defines strengths and weaknesses in cell chemistry and weakness, which breaks these chemical features to computer data, pushing the company’s digital physics model.
Then it takes us to the second restriction: the upper system. While manufacturers and chips love to talk about cars that become Giant computers on wheelsThe truth is that most of the cars today still depend on the integrated systems, the chips dated with a limited memory, and the specifications are closer to the calculators yesterday’s graphs than the GPU platforms loaded today.
“If you start with a table, you are essentially closed in the dimensions of this schedule. You really ignore yourself from the beginning.”
Efficiency is the key. The respiratory algorithm requires the minimum processor cycles and less than 10 kilograms of memory. Light-weight nature means that breathing technology can be turned on all types of limited devices, so that they are published through air updates-assuming that these integrated systems are smart enough to be removed from remoteness.
Getting this efficiency means relying on industry simulation and modeling of physics, primarily Matlab and Simulink. However, Campbell said that breathing (which is currently about 75 employees) is working on future releases for the next fastest car processors.
Many future car processing chips also offer some AI’s sides on the plane, but they are not on the road to breathing. Campbell said it was “optimistic” in the technique of machine learning in this application, but it is not completely ready yet.
But the biggest registration is the battery cells themselves. The amount of current they can receive by building and chemistry is dictated. Breathing does not violate the laws of physics; It simply ensures that the car always feeds on the appropriate amount of current in time.
The electric ES90 is scheduled to arrive from Volvo, with breathing on board, to the market later this year. Fridholm emphasized that the program can theoretically work on the other EVS in Volvo, including those already in the market, but he made it clear that we should not expect updates that enhance the fees that strike models such as EX30 Any time soon. He said, “At the present time, we call it ES90,” and left it in that.
But breathing will not stop there. On its profession page, the company currently has holes for sales-related positions in Detroit, Michigan-It is clear that American auto manufacturers are target.
The breathing technique can also be found on Oppo 8As it was improved to expand the health of the battery. Campbell said the company is also working on rating “two wonderful customers” on the front of the consumer devices. In other words, we hope that we can taste some fast charging programs in something more affordable than new Volvo soon.
