General Motors is betting heavily on technologies that allow it to reduce charging times and increase the autonomy of its electric cars. The last one is based on “two better than one”. That is, reduce the charging time with two points used simultaneously.
The truth is that what he proposes makes a lot of sense. General Motors for your electric vehicles. If one charging socket is not enough to reduce the waiting time as much as you would like, use two.
But of course, for this it is necessary that your car is prepared. That is, have two connecting mouths, two cables and a battery pack capable of supporting this simultaneous charge. Well, that’s what the American firm is working on, which recently presented the new energy recovery technology for its Ultium batteries.
Ultium Batteries
And it is precisely the batteries with Ultium technology that make possible a dual charge or simultaneous chargesince they have a double-layer architecture that allows them to be connected in series or in parallel.
GM wants one port to have capacity up to 350 kW and the other only up to 22 kW
General Motors Ultium batteries are made up of bag cells with NCMA cathodes that can be stacked in multiple layersboth in horizontal and vertical position. This allows, on the one hand, a higher energy storage capacity and also packaging flexibility. On the other, a dual charge. Not only that, but this type of battery also has the possibility of being able to alternate between 400V and 800V voltage.
GM’s patent
As we say, General Motors has filed a patent in the United States that includes a double connection port in its vehicles.
This, on the one hand, can be used to connect two charging points simultaneously and significantly reduce waiting times. On the other hand, it is also possible to charge the vehicle and transfer the electricity from the batteries to another vehicle at the same time.
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Likewise, it would be possible to have one port to charge the battery, while the other would power tools and equipment that you could connect to the vehicle. Based on information in the patent application, it appears that GM is looking to make a port have fast charging capacity, up to 350 kWwhile the other will only charge the vehicle at slower speeds up to 22 kW.
But the best informed will tell us that this is not new, since the Porsche Taycan has two charging ports, although only one is enabled for fast charging. What sets this dual-port solution apart from the one used in the Taycan is that, unlike the Porsche, which has the ports on each side, GM’s approach is to have them on the same side, side by side. This is because in the Taycan they were not designed to be used at the same time.
Source: Inside EV’s