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CN-224225239-U - Middle motor based on double motors and electric vehicle

CN224225239UCN 224225239 UCN224225239 UCN 224225239UCN-224225239-U

Abstract

The utility model provides a middle motor based on double motors and an electric vehicle, which comprise a first motor, a second motor, a first speed reduction assembly, a second speed reduction assembly and a planetary speed change assembly, wherein the first speed reduction assembly comprises a first gear, a second gear, a third gear, an output gear and a motor clutch, the first gear is meshed with the output end of the first motor, the first gear is coaxially connected with the second gear, the second gear is meshed with the third gear, the third gear is meshed with the output gear, the motor clutch is connected to the periphery of the output shaft of the planetary speed change assembly, the third gear is an idler, and the motor clutch can be meshed with/separated from the output gear. The utility model can increase the torque, obviously reduce the volume of the motor and lighten the weight of the motor. The third gear adopts the form of idler, can reduce the external diameter of output gear to further reduce the volume of whole motor.

Inventors

  • HUANG HONGYUE
  • SHU WEIFANG
  • YU LINXIA
  • YU ZHENLING
  • SHENG XIAOLAN

Assignees

  • 安乃达驱动技术(上海)股份有限公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. The middle motor based on the double motors is characterized by comprising a first motor, a second motor, a first speed reduction assembly, a second speed reduction assembly and a planetary speed change assembly; The first speed reduction assembly comprises a first gear (7), a second gear (8), a third gear (10), an output gear (11) and a motor clutch (12); The first gear (7) is meshed with the output end of the first motor, the first gear (7) is coaxially connected with the second gear (8), the second gear (8) is meshed with the third gear (10), and the third gear (10) is meshed with the output gear (11); The motor clutch (12) is connected to the periphery of an output shaft (14) of the planetary transmission assembly; Wherein the third gear (10) is an idler gear, and the motor clutch (12) can be meshed with/separated from the output gear (11); The first motor is positioned outside the middle shaft (17); The second motor is sleeved on the middle shaft (17) and meshed with the input end of the planetary speed change assembly through the second speed reduction assembly.
  2. 2. The dual-motor based mid-motor of claim 1, wherein the planetary transmission assembly comprises an output shaft (14), a central shaft (17), a first planet carrier (19), a first planet gear (20), and a tread clutch (18); The novel bicycle is characterized in that the first planet support (19) is movably sleeved on the middle shaft (17), the first planet gears (20) are connected to one side of the first planet support (19), two ends of the middle shaft (17) are used for being connected with pedal cranks, the pedal clutches (18) are fixedly connected to the middle shaft (17) and can be meshed with/separated from the other side of the first planet support (19), the output shaft (14) is rotatably connected to the middle shaft (17) through the second bearings (16), and the inner wall of the output shaft (14) is provided with a second inner gear ring (1401) meshed with the first planet gears (20).
  3. 3. The dual-motor based mid-motor according to claim 2, wherein the second reduction assembly comprises a second planet carrier (21), a second planet gear (23) and a first ring gear (24); The second planetary gear (23) is rotatably connected to one side of the second planetary carrier (21) through a third bearing (22), and the first annular gear (24) is fixedly connected to the shell component of the central motor and meshed with the second planetary gear (23); The second planet carrier (21) is movably sleeved on the center shaft (17), a first sun gear (2101) is arranged on the other side of the second planet carrier (21), and the first sun gear (2101) is meshed with the first planet gear (20).
  4. 4. The dual-motor based mid-motor according to claim 1, wherein the first motor comprises a first stator core (3), a first rotor core (37), a first magnetic steel (38), a first winding (2), a first motor shaft (9), a seventh bearing (35) and an eighth bearing (36); The first magnetic steel (38) is connected to the first stator core (3) or the first rotor core (37), the first stator core (3) surrounds the outer side of the first rotor core (37), the first winding (2) is connected to the groove of the first stator core (3), the first rotor core (37) is connected to the first motor shaft (9), the first motor shaft (9) is rotatably connected to a shell component of the middle motor through a seventh bearing (35) and an eighth bearing (36), and one end of the first motor shaft (9) is meshed with the first speed reducing component.
  5. 5. A two-motor based mid-motor according to claim 3, characterized in that the second motor comprises a second stator core (29), a second rotor core (28), a second magnetic steel (30), a second winding (31), a second motor shaft (27), a fourth bearing (26) and a fifth bearing (32); The second magnetic steel (30) is connected to the second stator core (29) or the second rotor core (28), the second stator core (29) surrounds the outer side of the second rotor core (28), the second winding (31) is connected to a groove of the second stator core (29), the second rotor core (28) is connected to the second motor shaft (27), the second motor shaft (27) is rotatably connected to a shell component of the central motor through the fourth bearing (26), and the second motor shaft (27) is rotatably connected to the central shaft (17) through the fifth bearing (32); A second sun gear (2701) is connected to the end of the second motor shaft (27), and the second sun gear (2701) is meshed with the second planetary gears (23).
  6. 6. The dual-motor based center motor according to claim 5, wherein the second sun gear (2701) is sleeved on the center shaft (17).
  7. 7. The dual-motor based center motor according to claim 2, further comprising a chain wheel (15), wherein the chain wheel (15) is connected to the outer circumference of the output shaft (14) for driving a chain.
  8. 8. The two-motor based center motor according to claim 1, further comprising a housing assembly comprising a left housing (1), a right housing (6) connected to each other, and a partition (5) between the left housing (1) and the right housing (6), the first motor, the second motor and the first reduction assembly, the second reduction assembly, the planetary transmission assembly being separated by the partition (5).
  9. 9. A two-motor based center motor according to claim 3, characterized in that the first sun gear (2101) is sleeved on the center shaft (17).
  10. 10. An electric vehicle comprising a dual motor based center motor according to any one of claims 1-9.

Description

Middle motor based on double motors and electric vehicle Technical Field The utility model relates to the technical field of motors, in particular to a center motor based on double motors and an electric vehicle. Background In the electric bicycle field, put the motor and refer to electric bicycle's driving motor and install the motor in the intermediate position of automobile body, pedal position, this motor is connected with the automobile body to be connected and transmit power through chain and rear wheel, pedal is installed to the both sides of motor simultaneously, under the condition that the motor does not have the power, the person of riding can realize the manpower of bicycle through pedal and ride. Patent document CN114423675A discloses an electric assist vehicle propulsion system, in which a crankshaft and a second motor are connected to an epicyclic gear train through a first input element to form a first input of the epicyclic gear train, and the first motor is connected to the epicyclic gear train through a sun gear to form a second input of the epicyclic gear train. However, the design mode that the double motors are arranged outside the middle shaft greatly increases the whole volume of the middle motor, increases the weight of the middle motor, and has limited output torque. Disclosure of utility model Aiming at the defects in the prior art, the utility model aims to provide a middle motor based on double motors and an electric vehicle. The utility model provides a middle motor based on double motors, which comprises a first motor, a second motor, a first speed reduction assembly, a second speed reduction assembly and a planetary speed change assembly, wherein the first speed reduction assembly is connected with the first motor; The first speed reduction assembly comprises a first gear, a second gear, a third gear, an output gear and a motor clutch; The first gear is meshed with the output end of the first motor, the first gear is coaxially connected with the second gear, the second gear is meshed with the third gear, and the third gear is meshed with the output gear; the motor clutch is connected to the periphery of the output shaft of the planetary transmission assembly; Wherein the third gear is an idler gear, and the motor clutch can be meshed with/separated from the output gear; the first motor is positioned outside the middle shaft; The second motor is sleeved on the center shaft and meshed with the input end of the planetary speed change assembly through the second speed reduction assembly. Further, the planetary transmission assembly comprises an output shaft, a middle shaft, a first planet carrier, a first planet gear and a tread clutch; The first planet support is movably sleeved on the central shaft, the first planet gears are connected to one side of the first planet support, two ends of the central shaft are used for being connected with pedal cranks, the pedal clutch is fixedly connected to the central shaft and can be meshed with/separated from the other side of the first planet support, the output shaft is rotatably connected to the central shaft through a second bearing, and a second annular gear meshed with the first planet gears is arranged on the inner wall of the output shaft. Further, the second reduction assembly includes a second planet carrier 21, a second planetary gear, and a first ring gear; the second planetary gear is rotatably connected to one side of the second planetary carrier 21 through a third bearing, and the first annular gear is fixedly connected to a casing component of the infinitely variable middle motor and meshed with the second planetary gear; The second planet carrier 21 is movably sleeved on the central shaft, a first sun gear is arranged on the other side of the second planet carrier 21, and the first sun gear is meshed with the first planet gears. Further, the first motor comprises a first stator iron core, a first rotor iron core, first magnetic steel, a first winding, a first motor shaft, a seventh bearing and an eighth bearing; The first magnetic steel is connected to the first stator core or the first rotor core, the first stator core surrounds the outer side of the first rotor core, the first winding is connected to the groove of the first stator core, the first rotor core is connected to the first motor shaft, the first motor shaft is rotatably connected to a shell component of the stepless speed change central motor through the seventh bearing and the eighth bearing, and one end of the first motor shaft is meshed with the first speed reduction component. Further, the second motor comprises a second stator core, a second rotor core, second magnetic steel, a second winding, a second motor shaft, a fourth bearing and a fifth bearing; The second magnetic steel is connected to the second stator core or the second rotor core, the second stator core surrounds the outer side of the second rotor core, the second winding is connected to a groov