一种电摩用中置电机
By integrating drive and transmission components, and combining large-diameter helical gears with V-shaped magnetic grooves to enhance electromagnetic induction, the problems of poor handling and insufficient output power in electric motorcycles have been solved, achieving stable and efficient power transmission.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MULUN INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing electric motorcycles suffer from poor handling, insufficient output power and torque, especially when turning, accelerating or decelerating rapidly, the vehicle's stability is insufficient, and the belt-driven mid-mounted motor cannot meet the high torque requirements and has high energy loss.
The drive and transmission components are integrated into the housing. The large-diameter second helical gear meshes with the small-diameter first helical gear for transmission. Combined with the design of V-shaped magnet slots and induction magnets, the electromagnetic induction intensity is increased and the power output is adjusted in real time.
The output power and torque of the electric motorcycle have been improved, ensuring stable driving, reducing energy loss during power transmission, enhancing handling and transmission precision, and adapting to the needs of use in complex environments.
Smart Images
Figure CN224520869U_ABST
Abstract
Claims
1. A mid-motor for an electric motorcycle, characterized by, The device includes a housing (1), on which a drive shaft (4), an output shaft (5), and a drive assembly (6) are disposed. The drive shaft (4) and the output shaft (5) are rotatably disposed inside the housing (1). The drive assembly (6) is connected to the end of the drive shaft (4) away from the output shaft (5) and can drive the drive shaft (4) to rotate. The drive shaft (4) is driven to rotate with the output shaft (5) through a transmission assembly (7). The transmission assembly (7) includes a first helical gear (71) coaxially disposed at the end of the drive shaft (4). A second helical gear (72) coaxially disposed on the output shaft (5) and meshes with the first helical gear (71). The diameter of the second helical gear (72) is larger than the diameter of the first helical gear (71). A drive sprocket (51) is coaxially disposed at the output end of the output shaft (5).
2. The mid-motor for electric motorcycle according to claim 1, characterized in that, The drive assembly (6) includes a rotor core (61) and a stator core (62). The rotor core (61) is coaxially connected to the drive shaft (4). The rotor core (61) is provided with multiple magnetic poles. The stator core (62) is sleeved on the outer periphery of the rotor core (61) and fixedly connected to the inner wall of the housing (1). The stator core (62) is wound with multiple coils (621) that cooperate with the multiple magnetic poles.
3. A mid-drive motor for an electric motorcycle according to claim 2, characterized in that, The number of magnetic poles is ten, and the ten magnetic poles are evenly arranged around the rotor core (61). Each magnetic pole is provided with a V-shaped magnetic slot (611), and each V-shaped magnetic slot (611) is provided with a magnet (612). The number of coils (621) is twelve, and the twelve coils (621) are evenly arranged around the stator core (62).
4. The mid-motor for electric motorcycle according to claim 2, characterized in that, The bottom of the housing (1) is provided with a mounting groove (1031). The end of the drive shaft (4) extends into the mounting groove (1031) and is coaxially provided with an induction magnet frame (8). An induction magnet (81) is provided in the induction magnet frame (8). An MR plate (9) electrically connected to the stator core (62) is provided in the mounting groove (1031). A detection element (91) for sensing the change of the magnetic field of the induction magnet (81) is provided on the MR plate (9). The detection element (91) is arranged opposite to the induction magnet (81).
5. The mid-motor for electric motorcycle according to claim 1, characterized in that, The housing (1) is provided with a waterproof and breathable valve (1011) and a plurality of plugs (1012), and the waterproof and breathable valve (1011) and the plurality of plugs (1012) are threadedly connected to the housing (1).
6. The mid-motor for electric motorcycle according to claim 1, characterized in that, The housing (1) includes an upper end cover (101), a lower end cover (103), and a box body (102). The upper end cover (101) and the lower end cover (103) are detachably connected to the box body (102) by multiple connecting bolts (2).
7. The mid-motor for electric motorcycle according to claim 6, characterized in that, Sealing gaskets (3) are provided at the connection points between the upper end cover (101) and the lower end cover (103) and the box body (102).
8. The mid-motor for electric motorcycle according to claim 1, characterized in that, The end of the output shaft (5) away from the second bevel gear (72) is threadedly connected with a locking cover (52), and the locking cover (52) abuts against the upper surface of the driving sprocket (51).