Two-gear automatic gearbox of electric automobile
An automatic transmission, electric vehicle technology, applied in transmissions, gear transmissions, belts/chains/gears, etc., can solve problems such as increased noise, reduced relative ratings of efficiency and torque, and reduced life of transmission system components
Inactive Publication Date: 2011-09-14
苏州安远新能源动力有限公司
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[0005]c) When the motor speed is close to 10,000 revolutions per minute, the efficiency and torque are greatly reduced relative to the rated value, while the noise is greatly increased, and the life of the transmission system components is greatly reduced reduce
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[0018] Attached below Figure 1-2 One is to describe the preferred embodiments of the present invention in detail, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0019] as attached figure 1 As shown, a two-speed automatic transmission of an electric vehicle includes a casing 7, and the casing 7 is provided with: an input shaft 1 driven to rotate by a power motor and a cam driven to rotate by a shift control motor. A grooved shaft 2, the input shaft 1 is coaxially provided with a first gear 11, a second gear 12 and a synchronizer 13 between the first gear 11 and the second gear 12, the synchronizer 13 It can slide along the axial direction parallel to the input shaft 1, and the convex groove shaft 2 has a shift groove 21, and a shift fork contact 141 of the shift fork lever 14 is movably inserted in the shift groove 21 , the sh...
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The invention discloses a two-gear automatic gearbox of an electric automobile. The automatic gearbox comprises a box body, wherein in the box body, a first gear, a second gear and a synchronizer are arranged on an input shaft; a shifting fork rod is arranged on the synchronizer; the shifting fork rod is provided with a shifting fork contact; a flange groove shaft is provided with a shifting groove which is connected with the shifting fork contact; the shifting groove is provided with a first gear part, a second gear part and a neutral gear corner part; when the shifting fork contact is at the position of the first gear part of the shifting groove, the synchronizer is connected with the first gear, when the shifting fork contact is at the position of the second gear part of the shifting groove, the synchronizer is connected with the second gear, and when the shifting fork contact is at the position of the neutral gear corner part of the shifting groove, the shifting fork contact is kept parallel to the axial direction of the flange groove shaft so as to enable the synchronizer to be at the neutral gear position; a third gear and a fourth gear which are meshed with the first gear and the second gear respectively are arranged on an output shaft; a measuring device is also arranged on the output shaft; and the output end of the measuring device is connected with a micromotor used for controlling the two-gear automatic gearbox.
Description
technical field [0001] The invention relates to a two-speed automatic gearbox, in particular to a two-speed automatic gearbox for an electric vehicle. Background technique [0002] Pure electric vehicles are a new energy vehicle that can replace traditional internal combustion engine vehicles. At present, most electric vehicle transmissions only have one gear. There are following technical disadvantages in the existing first gear electric vehicle: [0003] a) The speed ratio of a gear is difficult to guarantee the car's maximum climbability, maximum speed and maximum acceleration requirements; [0004] b) When the car is cruising at high speed (greater than 100 km / h), the speed of the motor and gear is close to or exceeds 10,000 revolutions per minute. Such a high rotational speed requires high manufacturing precision of bearings and gears. Will greatly increase the production cost; [0005] c) When the motor speed is close to 10,000 revolutions per minute, the efficien...
Claims
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Inventor 张毅郭进端米春亭秦大同
Owner 苏州安远新能源动力有限公司