Tesla has filed four patents for wireless charging. Previously, Tesla acquired the experience and skills of Wiferion’s engineering team in an acquisition in June 2023. Tesla quickly sold off the company but kept the company’s engineers. This was an acqui-hire, where large companies rapidly onboard top talent by purchasing a company for human capital, rather than products, services, or intellectual products.
Following the Wiferion acquisition, Tesla showed off a wireless charging mat several times and even confirmed they are working on wireless inductive home charging. We expected this to arrive with the Cybertruck, but now we hope to see more details at the upcoming Robotaxi reveal event in October, at the Warner Bro.’s studio in Hollywood.
Wireless Charging Patents
First Patent
The first of the four patents looks at temperature sensors and applications for wireless charging. Tesla intends to track the temperatures across both the wireless charging pad, as well as the inductive charging coils in the vehicle. The third patent details how they’re planning to use this in an innovative way.
WIPO
Second Patent
The second patent is a shorting switch, which is designed to prevent or reduce leakage of energy to ground sources near the wireless charging mat. This shorting switch is used to create a short with the receiving side of the inductive charging, essentially making energy transfer faster and more efficient – while also reducing the amount of energy that is leaked out elsewhere. We’ll leave this one for the electrical engineers to explain in our forums.
Third Patent
The third patent is actually the wireless charging circuit itself, and how to manufacture it. This one is straightforward and explains how Tesla intends to design and build the prototype inductive wireless charging mats. Beyond the basic design, this document also details how Tesla intends to lay out the inductive charging coils and how it expects the entire assembly to function – which includes a small cable that runs to a wall-mounted energy source.
Fourth Patent
The final patent is for intelligently estimating and adapting to variations in wireless charging layouts and systems. This one is probably the most interesting of the four patents, as it involves adjusting the coils in the mat to dynamically account for the positioning of the vehicle, as well as responding to the information from the first patent – the temperature sensors.
Essentially, by varying the coil induction across the mat, Tesla intends to dynamically aim the wireless charger at different parts of the inductive coils in the vehicle, thereby reducing heat. This patent will also help Tesla to determine the adequate charge speed and other key information they may need to relay to the vehicle, or back to fleet management software.
Cybertruck Inductive Charging
While the Cybertruck never actually arrived with inductive charging, it was noted in the Service Manual to have 2 Inductive Charging Headers, so it is ready to be upgraded to have Inductive Charging support. We expect that Tesla will release this as a purchasable upgrade for the Cybertruck sometime in the future – likely as a package with the Inductive Charging Mat.
Robotaxi Inductive Charging
The Robotaxi will likely be the first of Tesla’s vehicles to feature inductive charging – which. makes sense given its autonomous nature. Plugging in a NACS charger will likely be fairly difficult to automate, and the 5-10% efficiency loss of wireless charging isn’t a huge deal. It’s possible Tesla chose this route due to cost, as having an automated NACS cable like the “snake” prototype we saw years ago could be costly.
Having a simple parking stall with an inductive mat on it, alongside all the tech and supplies needed to automatically clean and sanitize the Robotaxi makes far more sense. This means that a Robotaxi will be able to roll in, charge and clean itself, and then roll out to go pick up more customers. Tesla is planning a super-efficient system here that requires minimal intervention from real humans.
Essentially, by effectively managing the Robotaxi fleet, Tesla can offset the increased time that wireless charging would take, and also reduce the amount of waste energy by charging when energy is cheapest. While this could prevent Tesla from taking advantage of the sheer battery mass of a Robotaxi fleet – by selling power when it’s expensive and travel demand is low – this doesn’t make it impossible.
Smartphone manufacturers have demonstrated reverse wireless charging with the inductive charging coils already present in modern smartphones. We could see Tesla low-power bi-directional charging in the future too.
We’re looking forward to seeing Tesla unveil this at the upcoming Robotaxi event. It’ll be something special, for sure.
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Tesla’s VP of Charging, Max de Zegher, recently confirmed on X that the first 500kW Supercharger sites are coming soon. These next-generation chargers will not only support the Cybertruck charging at 500kW, but they’ll also be more cost-effective to deploy than previous models.
Late last year, Tesla indicated plans to accelerate Supercharger deployments, with many future locations featuring V4 cabinets. Some sites are already being equipped with V4 posts, offering improved charging capabilities, but the V4 cabinets allow Tesla to get even more power to each stall.
500kW Charging
Tesla recently enabled 325kW charging for the Cybertruck at compatible Superchargers across North America - specifically those with V4 posts and V3 cabinets, which are typically referred to as V3.5 Superchargers. The upcoming V4 Superchargers will also have a V4 cabinet, which will take this even further—delivering up to 500kW per stall.
While the increase to 325kW has already improved charging times by approximately 3–5 minutes, depending on the vehicle’s state of charge (SoC), the jump to 500kW is expected to have an even greater impact. With this upgrade, the Cybertruck could potentially charge from 10% to 80% SoC in under 30 minutes—an impressive feat for a vehicle with a massive 123kWh battery pack.
The vehicle’s ability to maintain a high level of charge current can make an even larger difference, so we’ll have to see what the charge curve looks like at these new 500kW chargers.
One of the biggest advantages of the V4 cabinet is its streamlined design. It can power up to eight charging posts—twice as many as the V3 cabinet—reducing site complexity and minimizing the amount of electrical work needed between the cabinet and the posts. This results in a smaller footprint and a more efficient installation process.
Tesla has optimized deployments by pre-mounting Supercharger posts on factory-made concrete bases, making them ready for quick installation. With this approach, Tesla is able to install each post for less than $40,000, according to Max de Zegher.
This is a fraction of the $225,000 per stall cost recently revealed in a contract awarded to Revel Charging. This massive price difference benefits both Tesla and site owners, allowing for faster and more cost-effective network expansion.
Lower costs also mean potential savings for customers, who will enjoy cheaper and faster charging. With the first full V4 sites set to roll out soon, it will be exciting to see how quickly the Cybertruck can charge. Looking ahead, future Tesla vehicles with 800V high-voltage architecture could also take advantage of these next-generation charging speeds.
Supercharging is fast and convenient, but there are times when a station reaches full capacity, requiring drivers to wait for an available stall. When there are only a few vehicles in line, the wait is minimal, and figuring out whose turn it is to charge is straightforward. However, long queues can form during peak travel times or in high-traffic areas, leading to confusion and frustration as vehicles cut the line.
Currently, there is no official system for managing Supercharger queues—drivers rely on informal, self-organized lines. While many follow an unspoken order, disputes can arise when some claim they arrived first or attempt to cut ahead.
Urban Superchargers in cities like Toronto, Los Angeles, and New York often see long lines during busy hours, with drivers doing their best to maintain order. A structured queuing system could help streamline the process, reducing conflicts and ensuring a fair, organized charging experience for all, and that’s exactly what Tesla is about to implement.
Virtual Queue
The Tesla Charging account on X has confirmed that it plans to introduce a Virtual Queuing system, with a pilot program set to launch at select Supercharger sites next quarter. While Tesla has yet to specify which locations will be included, it’s likely the initial rollout will take place in the United States, where the company typically begins testing new charging initiatives.
Tesla says that if the pilot program receives positive feedback, they will expand the system to more Superchargers this year.
The goal of Virtual Queuing is to improve the charging experience whenever wait times occur. According to Tesla, this would apply to roughly “~1% of cases,” though many high-demand Supercharger sites frequently experience long lines. While some remote locations may see little to no wait times, busier stations could greatly benefit from a structured queuing system.
Potential Implementations
While Tesla hasn’t detailed exactly how the Virtual Queuing system will work, there are a few likely possibilities. One approach could involve locking a vehicle’s VIN into the queue, preventing other vehicles from starting a charge prematurely. In this case, any attempt to charge out of turn might trigger a “Stall reserved for next vehicle in line” message.
This method would provide a straightforward solution—only the next vehicle in the queue would be able to initiate a session. The queuing process itself could be automated when a vehicle navigates to the Supercharger, factoring in estimated arrival time, or it might require manual enrollment once you arrive.
Tesla may also impose limits on queue validity. If a vehicle leaves the charging area, its position could be automatically forfeited.
Software Solution
In China, Superchargers sometimes include locks that come up from the ground, preventing non-Teslas from parking in these designated Supercharger spots. Up until recently, Tesla users had to open up the Tesla app and choose a stall before the lock would go down and allow them to park. However, with a recent update, this is all done on the vehicle’s screen, where the driver can pick the charging stall and automatically have the lock lower.
We may see a similar implementation, where a driver would choose to add themselves to the Supercharger queue, and their position in line and estimated wait time would then be viewable on the vehicle’s screen.
Reservation Signage
Tesla’s reservation about this new queuing system could be around driver confusion. Superchargers weren’t built with a queue system in mind, meaning that there’s no way to tell whether a stall is reserved for a specific vehicle.
A physical indicator could help owners quickly identify when a Supercharger stall is available for the next vehicle in the queue. Tesla could implement a system similar to grocery store checkout lights, where a change in lighting signals whether a register is open or closed.
For example, the Supercharger post could pulse blue when it’s ready for the next user, with a corresponding message in the vehicle stating, “Use the Supercharger post that is pulsing blue.” This would provide a clear, intuitive way to direct drivers to the correct stall.
Tesla can also display a menu inside a vehicle when it first arrives at a Supercharger, letting the driver know that there’s a wait time and explaining the process and their estimated wait time. It can also prompt the driver to be added to the queue.
Tesla Priority
Another factor to consider is how Tesla will handle non-Tesla vehicles in the queue. One possibility is giving priority access to Tesla owners or those subscribed to the Supercharger membership. This would ensure that Tesla vehicles and paying members receive preferred access at busy Supercharger sites, making the membership more valuable while also incentivizing Tesla ownership—especially as the network expands to other EV brands.
Regardless of whether Tesla introduces priority access, the Supercharger queuing system will be a valuable addition, particularly in high-traffic urban locations and during peak travel seasons. By having an official queue Tesla will create a smoother and more organized charging experience for all users.
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