An i-mmd intelligent hybrid system teaching platform

Abstract

The application discloses an i-MMD intelligent hybrid system teaching platform, and relates to the technical field of automobile teaching aids.The i-MMD intelligent hybrid system teaching platform comprises a rack, an engine module, a generator module, a motor module, a transmission unit, a brake unit and a storage battery.The engine module is used for collaborative work in different driving modes and realizes power output.The generator module is used for energy conversion in hybrid mode and engine mode.The motor module is used for collaborative work in different driving modes, realizes power output and energy conversion.The transmission unit comprises a speed reducer connected with the engine module and the motor module, a differential connected with the speed reducer, a group of half shafts connected with the differential at both ends, and a group of tires connected with the group of half shafts at outer ends.The brake unit comprises two groups of opposite rollers and a group of driving devices used for driving the two groups of opposite rollers, and realizes braking and driving of the group of tires in a kinetic energy recovery mode.The storage battery is used for charging.The i-MMD intelligent hybrid system teaching platform has the advantages that it is convenient for students to understand power switching logic demonstration, kinetic energy recovery principle in the braking process, and simulation tire rotation charging.

Description

Technical Field

[0001] This invention relates to the field of automotive teaching aids technology, specifically to an i-MMD intelligent hybrid system teaching platform. Background Technology

[0002] The i-MMD hybrid system works primarily based on a series-parallel configuration, achieving optimal energy utilization in different driving scenarios through the coordinated operation of the electric motor and the internal combustion engine, thereby reducing fuel consumption and improving power performance.

[0003] During start-up and low-speed driving, the vehicle is primarily driven by the electric motor, with the engine off and not directly involved in driving. When the vehicle enters low-to-medium speed driving, the engine generates electricity through the generator, the clutch remains disengaged, and the electric motor outputs torque through a gear mechanism. When driving at high speeds or when greater power output is required, the engine starts and participates in driving, while simultaneously charging the battery pack. During high-speed cruising, the engine is directly connected to the wheels via the clutch, driving the vehicle forward directly. At this time, the battery can be in either charging or auxiliary charging state.

[0004] Currently, most i-MMD hybrid teaching aids on the market use a semi-enclosed shell, which makes it impossible to directly observe the power distribution device (such as clutch and gear set), dual motors (generator and drive motor) and PCU (power control unit) inside the IPU. Students find it difficult to understand the power switching logic. In addition, the wheel hub speed is relatively slow in the working state, making it impossible to demonstrate the principle of kinetic energy recovery during braking. Summary of the Invention

[0005] To address the above shortcomings, this invention provides an i-MMD intelligent hybrid system teaching platform to solve the teaching problems of the i-MMD intelligent hybrid system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An i-MMD intelligent hybrid system teaching platform, including stand; The engine module, fixed at the front end of the test bench, is used for coordinated operation under different drive modes to achieve power output; The generator module, located on one side of the engine module, is used to realize energy conversion in hybrid mode and engine mode; The motor module, located above the generator module, is used for coordinated operation under different drive modes to achieve power output and energy conversion; The transmission unit, mounted on the rear end of the test bench, includes a reducer that is connected to the engine module and the motor module, and a differential that is connected to the reducer. A set of half shafts is connected to both ends of the differential, and a set of tires is connected to the outer ends of the set of half shafts. The braking unit is installed at the rear end of the platform and located below a set of tires. It includes two sets of opposing rollers and a set of drive devices for driving the two sets of opposing rollers, so as to brake and drive a set of tires in kinetic energy recovery mode. The battery, fixed at the front end of the platform, is used for power supply and energy storage in different driving modes.

[0007] Furthermore, the engine module includes a power source one, mounted on the front end of the test bench; a drive shaft, mounted on the drive end of the power source one; a transmission gear one, mounted on the drive shaft; a driven shaft, connected to the front end of the drive shaft via a conical clutch mechanism; and a transmission gear two, mounted on the front end of the driven shaft and connected to the rear reducer. In EV pure electric mode and hybrid mode, the conical clutch mechanism is in an open state, while in engine mode, the conical clutch mechanism is in an engaged state. The power source one uses a high-power motor instead of an engine, which can drive the generator module to work and charge, or directly drive a set of tires to rotate via the reducer.

[0008] Furthermore, the conical clutch mechanism includes an active friction disc connected to the front end of the drive shaft, with a conical groove inside; a driven friction disc movably mounted on the rear end of the driven shaft and matching the active friction disc; a return spring mounted on the driven shaft and connected to the driven friction disc; a toggle pawl hinged to the upper end of the frame, with its bottom engaged with the driven friction disc; and a linear actuator unit one hinged to the upper end of the frame and used to drive the toggle pawl to deflect. The driven friction disc is movably mounted on the driven shaft via a spline. The linear actuator unit one uses a cylinder; when its telescopic end retracts, it can move the driven friction disc to the left via the toggle pawl, causing the active and driven friction discs to engage and achieve power connection. Conversely, when the telescopic end of the linear actuator unit one extends, the active and driven friction discs separate, the return spring is compressed, and power is interrupted.

[0009] Furthermore, the generator module includes a generator mounted on a stand and located behind the power source; a transmission gear mounted on the generator output end and meshing with the transmission gear; used to realize energy conversion in hybrid mode and engine mode.

[0010] Furthermore, the motor module includes a second power source, which is mounted on a stand and located above the generator; a drive gear, which is mounted on the drive end of the second power source and is connected to the bottom reducer for transmission; it is used for coordinated operation in different drive modes to realize power output and energy conversion.

[0011] Furthermore, the driving device includes a set of deflecting rods, hinged to the rear end of the bottom of the platform; a second set of linear actuators, hinged to the rear end of the platform, used to drive the set of deflecting rods to deflect relative to each other; a set of one-way gears, each connected to a corresponding roller via a one-way flywheel mechanism; a set of connecting rods, hinged between the set of deflecting rods; a transmission gear set mounted on the connecting rods, used to achieve synchronous transmission of the one-way gears; and a third power source, mounted at the bottom of the platform, with its driving end used to drive the transmission gear set to rotate. During braking, the telescopic ends of the second set of linear actuators extend, causing the rollers to come into contact with the tire, thus braking the tire and facilitating the demonstration of the kinetic energy recovery principle during braking. During braking, the rollers are locked in place by the one-way flywheel mechanism and do not rotate. The third power source uses a rotary motor, which can drive the rollers to rotate synchronously in opposite directions via the transmission gear set and the one-way gears, simulating tire rotation and charging, thus improving the teaching effect.

[0012] Furthermore, the one-way flywheel mechanism includes a ratchet outer ring connected to the outer end of the roller; a pawl inner ring connected to the one-way gear to lock the roller during tire braking; and several elastic pawls evenly installed on the surface of the pawl inner ring. During tire braking, the drive end of the power source three is locked, cooperating with the elastic pawls to prevent the roller from rotating, facilitating rapid tire braking, and preventing the transmission gear set from grinding due to roller rotation. When simulating tire rotation and charging, the power source three can drive the roller and tire to rotate in the opposite direction, at which time the elastic pawls are not locked.

[0013] Furthermore, it also includes a control box electrically connected to the battery, and the control box is electrically connected to a display. The control box is electrically connected to power source one, linear actuator one, generator, power source two, linear actuator two, and power source three respectively. The display is used to display power flow direction, battery charge, speed, and energy recovery rate data.

[0014] This invention provides an i-MMD intelligent hybrid system teaching platform with the following advantages: by employing an engine module, generator module, motor module, and transmission unit, the power distribution device inside the IPU is laid out on a stand, demonstrating the transmission conditions of each module under different modes, thereby facilitating students' understanding of the power switching logic. The braking unit can brake and drive a group of tires, facilitating the demonstration of the kinetic energy recovery principle during braking, and simulating tire rotation charging, thus improving the teaching effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an i-MMD intelligent hybrid system teaching platform according to the present invention.

[0016] Figure 2 This is a top view of the test bench described in this invention.

[0017] Figure 3 This is a schematic diagram of the engine module described in this invention.

[0018] Figure 4 This is a schematic diagram of the generator module described in this invention.

[0019] Figure 5 This is a schematic diagram of the motor module described in this invention.

[0020] Figure 6 This is a schematic diagram of the transmission unit described in this invention.

[0021] Figure 7 This is a schematic diagram of the driving device described in this invention.

[0022] Figure 8 This is a schematic diagram of the unidirectional flywheel mechanism described in this invention.

[0023] In the diagram: 1. Bench; 2. Engine module; 21. Power source one; 22. Drive shaft; 23. Drive gear one; 24. Driven shaft; 25. Drive gear two; 201. Active friction disc; 202. Driven friction disc; 203. Return spring; 204. Actuating pawl; 205. Linear actuator one; 3. Generator module; 31. Generator; 32. Drive gear; 4. Motor module; 41. Power source two; 42. Drive gear; 5. Transmission unit; 51. Reducer; 52. Differential; 53. Half shaft; 54. Tire; 6. Braking unit; 61. Roller; 62. Deflector rod; 63. Linear actuator two; 64. One-way gear; 65. Connecting rod; 66. Drive gear set; 67. Power source three; 601. Outer ring of ratchet; 602. Inner ring of pawl; 603. Elastic pawl; 7. Battery. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-8As shown: This application provides an i-MMD intelligent hybrid system teaching platform, including a test bench 1; an engine module 2, fixed to the front end of the test bench 1, used for collaborative work in different driving modes to achieve power output; a generator module 3, located on one side of the engine module 2, used for energy conversion in hybrid mode and engine mode; a motor module 4, located above the generator module 3, used for collaborative work in different driving modes to achieve power output and energy conversion; a transmission unit 5, installed at the rear end of the test bench 1, including a reducer 51 that is connected to the engine module 3 and the motor module 4, a differential 52 that is connected to the reducer 51, a set of half-shafts 53 connected to both ends of the differential 52, and a set of tires 54 connected to the outer ends of the set of half-shafts 53; a braking unit 6, installed at the rear end of the test bench 1 and located below the set of tires 54, including two sets of opposing rollers 61 and a set of driving devices for driving the two sets of opposing rollers 61, realizing braking and driving of the set of tires 54 in kinetic energy recovery mode; and a battery 7, fixed to the front end of the test bench 1, used for power supply and energy storage in different driving modes.

[0025] In this embodiment, the battery 7 is used to supply power to the motor module 4. Simultaneously, it can also be charged through the generator module 3 and the motor module 4. In EV pure electric mode: the engine module 2 is not started, the generator module 3 is not working, and the motor module 4 works independently, using the power from the battery 7 to drive a set of tires 54 to rotate. During braking of the set of tires 54, the motor module 4 acts as a generator and is driven to charge the battery 7, used for starting and driving at low to medium speeds. In hybrid mode: the engine module 2 is started to drive the generator module 3. The generator module 3 can directly supply power to the motor module 4 and also charge the battery 7, suitable for low to medium speed driving. Engine Mode: Engine module 2 starts, clutch engages, directly driving a set of tires 54 to rotate. Motor module 4 does not work. Generator module 3 can retain power according to the battery charge of battery 7 to charge battery 7. By using engine module 2, generator module 3, motor module 4 and transmission unit 5, the power distribution device inside the IPU is laid out on the stand 1 to demonstrate the transmission conditions of each module in different modes, so as to facilitate students' understanding of the power switching logic. Braking unit 6 can brake and drive a set of tires 54 through two sets of opposing rollers 61, which is convenient for demonstrating the principle of kinetic energy recovery during braking and simulating the rotation of tires 54 to charge, thus improving the teaching effect.

[0026] In some embodiments, the engine module 2 includes a power source 21, mounted on the front end of the test bench 1; a drive shaft 22, mounted on the drive end of the power source 21; a transmission gear 23, mounted on the drive shaft 22; a driven shaft 24, connected to the front end of the drive shaft 22 via a conical clutch mechanism; and a transmission gear 25, mounted on the front end of the driven shaft 24 and connected to the rear reducer 51. Figure 3 As shown, in EV pure electric mode and hybrid mode, the conical clutch mechanism is in the disengaged state, while in engine mode, the conical clutch mechanism is in the engaged state. The power source 21 uses a high-power motor to replace the engine, which can drive the generator module 3 to work and charge, or directly drive a set of tires 54 to rotate through the reducer 51.

[0027] In some embodiments, the conical clutch mechanism includes an active friction disc 201 connected to the front end of the drive shaft 22, with a conical groove inside; a driven friction disc 202 movably mounted on the rear end of the driven shaft 24 and mating with the active friction disc 201; a return spring 203 mounted on the driven shaft 22 and connected to the driven friction disc 202; a toggle pawl 204 hinged to the upper end of the frame 1, with its bottom movably engaged with the driven friction disc 202; and a linear actuator 205 hinged to the upper end of the frame 1 and used for... The driven friction disc 202 is deflected by the drive pawl 204; the driven friction disc 202 is mounted on the driven shaft 24 via a spline. The linear actuator 205 is a cylinder. When the telescopic end retracts, the driven friction disc 202 can be moved to the left by the drive pawl 204, so that the active friction disc 201 and the driven friction disc 202 are in contact, thus achieving power connection. Conversely, when the telescopic end of the linear actuator 205 extends, the active friction disc 201 and the driven friction disc 202 are separated, and the return spring 203 is compressed, thus achieving power interruption.

[0028] In some embodiments, the generator module 3 includes a generator 31, mounted on a stand 1 and located behind the power source 21; and a transmission gear 32, mounted on the output end of the generator 31 and meshing with the transmission gear 23; as shown Figure 4 As shown, it is used to achieve energy conversion in hybrid mode and engine mode.

[0029] In some embodiments, the motor module 4 includes a second power source 41, mounted on the stand 1 and located above the generator 31; and a drive gear 42, mounted on the drive end of the second power source 41 and connected to the bottom reducer 51 for transmission, such as... Figure 5 As shown, power source 2 41 uses an electric motor for coordinated operation under different driving modes to achieve power output and energy conversion.

[0030] In some embodiments, the drive device includes a set of deflecting rods 62, hinged to the rear end of the bottom of the frame 1; a set of linear actuators 63, hinged to the rear end of the frame 1, used to drive the set of deflecting rods 62 to deflect relative to each other; a set of one-way gears 64, respectively connected to the corresponding rollers 61 via one-way flywheel mechanisms; a set of connecting rods 65, hinged between the set of deflecting rods 62; a transmission gear set 66, mounted on the set of connecting rods 65, used to realize synchronous transmission of the set of one-way gears 64; and a third power source 67, mounted at the bottom of the frame 1, with its drive end used to drive the transmission gear set 66 to rotate; as shown Figure 7 As shown, the second linear actuator 63 uses a cylinder. During braking, the telescopic end of the second linear actuator 63 extends, driving a set of rollers 61 to come into contact with the tire 54, thus braking the tire 54. This facilitates the demonstration of the kinetic energy recovery principle during braking. During braking, the set of rollers 61 is limited and locked by a one-way flywheel mechanism, preventing rotation. The third power source 67 uses a rotary motor, which can drive a set of rollers 61 to rotate synchronously in the opposite direction through a transmission gear set 66 and a set of one-way gears 64, simulating the rotation and charging of the tire 54, thereby improving the teaching effect.

[0031] In some embodiments, the one-way flywheel mechanism includes a ratchet outer ring 601 connected to the outer end of the roller 61; a pawl inner ring 602 connected to the one-way gear 64, enabling the roller 61 to lock when the tire 54 is braked; and several elastic pawls 603 evenly mounted on the surface of the pawl inner ring 602. Figure 8 As shown, during the braking process of tire 54, the drive end of power source 3 67 is locked, which, together with the elastic pawl 603, prevents the roller 61 from rotating, thus facilitating rapid braking of tire 54 and preventing the transmission gear set 66 from grinding when the roller 61 rotates. When simulating the rotation and charging of tire 54, power source 3 67 can drive the roller 61 and tire 54 to rotate in the opposite direction. At this time, the elastic pawl 603 is not locked.

[0032] In some embodiments, a control box electrically connected to the battery 7 is also included. The control box is electrically connected to a display. The control box is electrically connected to power source 1 21, linear actuator 1 205, generator 31, power source 2 41, linear actuator 2 63 and power source 3 67 respectively. The display is used to display power flow direction, battery charge, rotation speed and energy recovery rate data.

[0033] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A teaching platform for an i-MMD intelligent hybrid system, characterized in that: include Stand (1); The engine module (2) is fixed on the front end of the stand (1) and is used for collaborative work in different driving modes to achieve power output; The generator module (3) is located on one side of the engine module (2) and is used to realize energy conversion in hybrid mode and engine mode; The motor module (4) is located above the generator module (3) and is used for collaborative work in different driving modes to achieve power output and energy conversion; The transmission unit (5) is installed on the rear end of the frame (1) and includes a reducer (51) that is connected to the engine module (3) and the motor module (4) and a differential (52) that is connected to the reducer (51). A set of half shafts (53) are connected to both ends of the differential (52), and a set of tires (54) are connected to the outer ends of the set of half shafts (53). The braking unit (6) is installed at the rear end of the stand (1) and located below a set of tires (54). It includes two sets of opposing rollers (61) and a set of driving devices for driving the two sets of opposing rollers (61) to brake and drive a set of tires (54) in the kinetic energy recovery mode. The battery (7) is fixed at the front end of the stand (1) and is used for power supply and energy storage in different driving modes.

2. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, The engine module (2) includes Power source 1 (21) is installed on the front end of the stand (1); The drive shaft (22) is installed on the drive end of the power source (21); Transmission gear 1 (23) is mounted on transmission shaft (22); The driven shaft (24) is connected to the front end of the transmission shaft (22) via a tapered clutch mechanism; The second transmission gear (25) is installed at the front end of the driven shaft (24) and is connected to the rear reducer (51) for transmission.

3. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, The conical clutch mechanism includes An active friction disc (201) is connected to the front end of the drive shaft (22) and has a tapered groove inside; The driven friction disc (202) is movably mounted on the rear end of the driven shaft (24) and matches the driving friction disc (201); A return spring (203) is fitted on the driven shaft (22) and connected to the driven friction disc (202); The actuating claw (204) is hinged to the upper end of the frame (1), and its bottom is engaged with the driven friction disc (202) by the movable latch; Linear actuator (205) is hinged to the upper end of the stand (1) and is used to drive the toggle pawl (204) to deflect.

4. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, The generator module (3) includes The generator (31) is mounted on the stand (1) and located behind the power source (21); The transmission gear (32) is installed at the output end of the generator (31) and meshes with the transmission gear (23).

5. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, The motor module (4) includes Power source 2 (41) is installed on the stand (1) and located above the generator (31); The drive gear (42) is installed on the drive end of the second power source (41) and is connected to the bottom reducer (51) for transmission.

6. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, The driving device includes The deflection rods (62) are a set and are hinged to each other at the bottom rear end of the platform (1); Linear actuator two (63) is a set, hinged to the rear end of the frame (1), and is used to drive a set of deflection rods (62) to deflect relative to each other; One-way gears (64) are a set, and are respectively connected to the corresponding rollers (61) through a one-way flywheel mechanism; The connecting rod (65) is a set, hinged between a set of deflecting rods (62); A transmission gear set (66) is mounted on a set of connecting rods (65) to achieve synchronous transmission of a set of one-way gears (64); The third power source (67) is installed at the bottom of the stand (1), and the drive end is used to drive the transmission gear set (66) to rotate.

7. The i-MMD intelligent hybrid system teaching platform according to claim 6, characterized in that, The one-way flywheel mechanism includes The outer ring of the ratchet (601) is connected to the outer end of the roller (61); The inner ring of the pawl (602) is connected to the one-way gear (64) to lock the roller (61) when the tire (54) is braked; There are several elastic pawls (603), which are evenly installed on the surface of the inner ring (602) of the pawl.

8. The i-MMD intelligent hybrid system teaching platform according to claim 1, characterized in that, It also includes a control box electrically connected to the storage battery (7), the control box being electrically connected to a display.

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