What are the three components of the new energy vehicle three-in-one system?
1 Answers
New energy vehicle three-in-one system refers to the motor, reducer, and motor controller. Reliability technical requirements for new energy vehicle three-in-one system: Maximum RMS acceleration for random vibration is 21.4m/s2, 10 hours in each direction. Sine random vibration - sine (100Hz-440Hz) maximum acceleration 50m/s2, test frequency range 10Hz to 100Hz, 33 hours in each direction. Sine random vibration - random, maximum RMS acceleration 68.7m/s2, 33 hours in each direction. All vibration tests must be completed under high/low temperature cycling conditions. Currently, many suppliers or OEMs worldwide are developing three-in-one products (mainly for passenger vehicles), such as Bosch, GKN, ZF, Denso, Schaeffler, Continental, Magna, BorgWarner, Nidec, etc. from abroad, and BYD, Shanghai Huayu, Changan, Great Wall, Geely's VREMT, as well as suppliers like Jing-Jin Electric, Inovance, Edrive, Dajun, etc. from China. "Drive three-in-one": includes motor, motor controller, and reducer. It is equivalent to the engine and transmission in traditional gasoline vehicles. "High-voltage three-in-one": includes DC-DC converter, OBC onboard charger, and PDU high-voltage distribution box. It serves as the "substation" and "dispatch station" responsible for distributing the vehicle's high-voltage electricity.
