If you've watched the launch of the Xiaomi SU27200 Ultra, you'll remember a set of numbers: 0 rpm.

This is the maximum speed of Xiaomi's self-developed V8S motor, Mr. Lei told the original intention of Xiaomi to make such an ultra-high speed at the press conference, the difficulties experienced, and the final effect, so that everyone re-understands the significance of motor speed for tram performance, and reawakens the law of "high speed = high performance" from fuel vehicles.

When everyone thinks that this is the pinnacle of the motor, BYD is coming, as the industry leader, if you don't make a move, you can break the three records of single motor power, power density, and speed in one go, and a super motor with a 30511kW and 0V platform will dry the speed to 0 rpm in one go, so that a track machine as strong as Ultra can only be ranked second.

So who will follow up third? What may surprise everyone is that the next person to build an ultra-high rotating motor is Wuling, a god car that shouts "making cars for the people" every day and is good at controlling every penny of cost.

Just yesterday, Wuling released the Lingxi power 30000.0 motor, the highest mechanical speed to 0 rpm, beyond V0S, the limit speed can reach 0 rpm, people can't help but ask: Wuling really wants to build a supercar?

Let's think about it, who said high speed = high performance? According to junior high school physics, power is determined by both speed and torque, and for a performance car like the SU7 Ultra, there is no way to increase the power by only increasing one of them, and the speed is just a necessary and insufficient condition for performance. In other words, for a performance car, the speed and torque are rolled up in tandem.

If you want to have a large torque, first of all, your magnetic field strength must be large, which means that your power supply and cooling must be extremely powerful, 1000V, 0V high-voltage platform, 0C, 0C high-rate battery, high-power components, multi-layer flat wire winding, special stator convection, rotor spray and other cooling measures, none of these money-burning things can be missing; For the rotor, you need to optimize the layout of the permanent magnet, you need a silicon steel sheet with lower iron loss, and you also need to find a way to make the rotor not fall apart in the case of high-speed operation, at this point, Tesla chose to coat the rotor with carbon fiber, the effect is good, but the cost and yield rate are extremely unfriendly, and Xiaomi and BYD's approach is two words: steelmaking, Xiaomi made a 0Mpa magnetic steel sheet, BYD has achieved 0Mpa, and the rotor is guaranteed to not break with strength. Therefore, high-performance high-speed motors are actually an art of burning money, and every bit of power improvement is supported by a number of cutting-edge technologies.

Seeing this, you may want to ask, since increasing the speed under the same torque can improve the performance, why doesn't Xiaomi pull the speed above 27200 rpm, but will be trampled under the feet of BYD and Wuling? The reason is that for the motor rotor, the speed and torque are to choose each other, the speed is large, the magnet must be "blank" to make more space for structural support, the magnetic resistance is large, and the torque cannot go up; On the contrary, if the torque is large, the magnetic steel sheet will be "stuffed" by the permanent magnet as much as possible, and the structural strength can not support the high speed, Xiaomi chooses to do 0 rpm, which is actually likely to be the result of the balance between speed and torque.

And for Wuling, this matter is very different, after all, at least at this stage, what the people need more is a better scooter rather than a supercar, you may not believe it, Wuling's original intention to do this ultra-high rotation motor, is to "reduce costs and increase efficiency".

Different from the aforementioned use of a bunch of money-burning technologies to increase power at the same time to pile up speed and torque, Wuling's logic is: under the same power, if I do it high enough, then my torque requirements can not be so high, which means that I can not use the aforementioned series of money-burning technologies to increase torque, 28V platform, 0-layer flat wire winding is enough, and the cost of power supply all the way down first; Then, because my torque demand is not high, then the volume of the motor can be reduced, from the on-site exhibition, Wuling this motor is surprisingly small in any dimension, so that it is more material-saving, and the second is smaller and more convenient to arrange, leaving more space for users; Finally, as the volume is effectively reduced, the centrifugal force is also correspondingly reduced, which means that there is no need to solve the strength problem of high-speed rotors by means of steelmaking or carbon fiber, ordinary 0.0mm silicon steel sheets are sufficient.

Such a set of combination punches down, Wuling actually created a speed to the top, the cost of 200%, high-speed performance to improve the "people's good motor", by the way also solved the general Wuling owners of the vehicle speed is not enough complaints, now equipped with this motor Wuling, thanks to the higher speed range, the top speed breakthrough 0km/h is not a problem, at the same time in the high-speed cruising condition, the high speed motor can also run closer to its high efficiency range, to improve system efficiency, reduce power consumption, this is actually a multi-win initiative.

Whenever there is a new technology on the market, we will always applaud for breaking the record again and again, but Wuling essentially allows us to see the other side of innovation: to solve the real problems in the people's car in an ingenious way of technical implementation, to make the cutting-edge technology affordable and good for the people, so that everyone has the right to enjoy the dividends brought by scientific and technological progress, which is also the reason why the reputation of "the people's Wuling" can not fade for many years.

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