Tesla Unlocks 10-Millionth Electric Drive System Milestone
TapTechNews August 1st news, Tesla tweeted yesterday (July 31st) announcing the unlocking of the first "10-million" milestone, rolling out the 10-millionth electric drive system globally at the Shanghai Gigafactory.
Tesla officials said in the tweet: "Tesla redefines the electric drive system, starting from scratch with self-research and self-production. Over 10 million powerful "hearts" make every Tesla a performance car. Thanks to the support and companionship of more than 6 million owners, we accelerate the transformation of the world to sustainable energy together".
The electric drive system is one of the core systems of electric vehicles, mainly composed of the drive motor, motor controller and reduction (transmission) gearbox. TapTechNews quoted the report of "Electric Vehicle 1000 People Conference" that Tesla's electric drive system has gone through four generations of technological iterations:
The first-generation electric drive system was applied in Roadster, using an asynchronous induction motor as the drive motor with the authorization of ACPropulsion, and the controller applied IGBT single-tube parallel technology. It was the earliest developed and had a small delivery volume, and was less known to the world.
The second-generation electric drive system was used in Model S/X, and the controller was changed to a three-dimensional structure, similar to a laminated sandwich structure, with the asynchronous motor and controller arranged symmetrically on the left and right.
The third-generation electric drive system was applied in Model 3/Y, which was the first to carry a permanent magnet synchronous motor. Silicon carbide power devices were applied in the controller, and the structural design of the controller was changed, making it more compact overall.
The fourth-generation electric drive system optimized the protection of the output three-phase electrical connection, added an infrared temperature sensor; the position of the connector that was previously fixed with screws on the controller is now changed to a one-piece molding process using stir welding, further reducing the cost; the motor oil filter housing is integrally cast, and the filter element is built-in and no longer replaceable, etc.