Dual-motor three-gear variable speed drive device for electric vehicle
An electric vehicle, three-speed transmission technology, applied in control devices, vehicle components, transportation and packaging, etc., can solve the problems of insufficient high-speed power, low-speed efficiency, etc., to avoid high-speed whistling, improve efficiency, and make up for high-speed power The effect of sexual inadequacy
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[0031] see figure 1 A dual-motor three-speed variable-speed driving device for an electric vehicle includes a main motor 2, an auxiliary motor 1, and a three-speed transmission mechanism. The power of the main motor 2 is 30kw, which is suitable for low speed and high torque, and the power of the auxiliary motor 1 is 20kw, which is suitable for high speed and small torque, and both are permanent magnet synchronous motors.
[0032] The three-speed transmission mechanism includes a first shaft 4 , a second shaft 5 , a first gear 6 , a second gear 7 , a third gear 8 , a fourth gear 9 , a fifth gear 10 and a ring gear 11 .
[0033]The first gear 6 and the third gear 8 are installed on the first shaft 4 through the spline connection; the second gear 7, the fourth gear 9 and the fifth gear 10 are installed on the second shaft 5 through the bearing empty sleeve; the fourth gear 9 and the fifth gear 10 are conjoined gears, and a synchronizer 12 is installed on the second shaft 5 betwe...
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