A movie "How Do Formula E Cars Work?" That easy-to-understand explanation of the "Formula E" machine structure

The highest peak of the electric vehicle (EV) race that reached the second season "Formula E"Has gotten an incredibly hot battle than F1 with machine power being competing, power full open bonus mode being introduced, unexpected machine trouble occurred, and exciting and uncertain elements full. It is. I wonder what kind of structure of such a Formula E machine is made in the movie "How Do Formula E Cars Work?"Explains in an easy-to-understand manner using CG.

How Do Formula E Cars Work? - Formula E - YouTube


Let's look at the main components of the electric F1 "Formula E" machine.


The Formula E machine, like the F1, is an open wheel design. Each team is allowed to develop major parts.


Machine development of Formula E is also a challenge to the limit of EV technology.


Parts unique to EV are batteries. Unlike an engine car, it uses electric energy stored in a battery instead of fuel as a power source. Batteries equipped with 200 kg lithium ion cells,WilliamsWe are supplying to all teams.


The 200 kg lithium ion cell installed near the center of the car body is about 300 for the notebook PC ......


For a cellular phone it is equivalent to 4000 cars capacity.


It is 28 kWh including the regenerative energy that the machine can use in the race. In the race broadcast, the remaining battery charge is digitally displayed so that the audience can grasp how much battery is left and what kind of tactics the driver is taking.


Host a raceFIAIt is strictly regulated by the amount of energy used as well as the peak power (maximum output) is limited to 200 kW in qualifying and 170 kW in the final race. However, three drivers selected by fan voting just before the race adopted "fan boost" system which can use full power of 200 kW only for 5 seconds in the race race,OvertakingI am directing the scene.


From the second year of the season after the first year season that it was a one-make race that can not be remodeled, the team will be allowed to change the "drive train (drive system)" of "inverter", "motor" and "transmission" became.


Parts that convert direct current from the battery to alternating current are "inverters" and are an essential part indispensable in EV. The Formula E machine's inverter is mounted behind the driver, switching the switch ten thousand times per second, finely adjusting the frequency and current amount to maximize the torque and power of the motor.


"Electric" is indispensable to EV


The motors of the Formula E machines are basically the same as the general AC motors.


"Rotor" of rotating parts ... ...


It consists of a stator that does not rotate.


A powerful magnet is attached to the rotor, and the stator is filled with copper coils tightly. When electric current flows through the copper wire, a magnetic field is generated, and this magnetic field causes attractive and repulsive forces on the magnet to rotate the shaft.


The maximum number of revolutions of the motor is 20000Rpm. The vertically placed motor efficiently uses rotational energy through the transmission.


In Formula E, not only the drivers compete on the course, but also the team developers of each team are competing to make the fastest and efficient machine.