CN219856810U - New energy automobile drive arrangement - Google Patents
New energy automobile drive arrangement Download PDFInfo
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- CN219856810U CN219856810U CN202320343665.7U CN202320343665U CN219856810U CN 219856810 U CN219856810 U CN 219856810U CN 202320343665 U CN202320343665 U CN 202320343665U CN 219856810 U CN219856810 U CN 219856810U
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Abstract
The utility model provides a new energy automobile drive arrangement, includes left motor, right motor, its characterized in that: the two motor rotating shafts are positioned on the same axis, the opposite ends of the rotating shafts of the left motor and the right motor are connected through a connecting/disconnecting device, a left planetary reduction mechanism is arranged at the left end of the left motor, the rotating shaft of the left motor is connected with a sun gear of the left planetary reduction mechanism, a planet carrier of the left planetary reduction mechanism is used for connecting a left wheel shaft, a right planetary reduction mechanism is arranged at the right end of the right motor, the rotating shaft of the right motor is connected with a sun gear of the right planetary reduction mechanism, and the planet carrier of the right planetary reduction mechanism is used for connecting a right wheel shaft.
Description
Technical Field
The utility model relates to the field of automobile transmission devices, in particular to a new energy automobile driving device.
Background
The new energy automobile adopts a centralized transmission system scheme, motor power is decelerated through a speed reducer with a fixed speed ratio, and then the power is output to a left transmission shaft and a right transmission shaft through a mechanical differential mechanism so as to drive wheels to drive the automobile to run. The mechanical differential mechanism for transmitting power generally has a complex mechanical structure, and the power of the left and right wheels cannot be independently regulated, so that the power performance and the operability of the whole vehicle are relatively poor, and a dual-motor separately controlled speed reducer is required to be arranged for regulating the power of the left and right wheels.
At present, two motors of a double-motor power device of a new energy automobile are usually arranged in parallel shafts, the arrangement structure is that the two motors are respectively connected with respective speed reducers, the speed reducers are connected with wheels on two sides to realize independent driving of the wheels, or the two motors are connected in parallel, a motor is connected with a driving gear of the speed reducers to transmit power to a differential mechanism through an intermediate transmission shaft, and the differential mechanism transmits the power to driving wheels. If the two motors are arranged in a single driving way, the two motors are not connected, so that electric energy waste is caused when the two motors are simultaneously driven on a labor-saving road condition, if the two motors are arranged in parallel, a differential mechanism is required to be arranged to adjust the rotating speed of the wheels of a vehicle for turning, and the differential mechanism has a complex structure and a large volume, occupies a large arrangement space, influences the overall layout of the vehicle and causes the problem of high manufacturing cost of the vehicle; secondly, the output shaft of the parallel shaft arranged dual-motor power device speed reducer and the driving motor are arranged on the outer side of the motor in a flat shaft state, so that the radial size of the dual-motor power device is larger. How to solve the problems needs a new energy automobile driving device which can adjust the working state of the double motors and has good compactness.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a new energy automobile driving device which drives double motors in parallel, solves the problem of poor slipping and escaping capability of a single-side wheel, and solves the problem that radial space greatly influences the overall layout of a whole automobile by coaxially arranging the motors and a planetary mechanism.
The technical scheme of the utility model is as follows: the utility model provides a new energy automobile drive arrangement, includes left motor, right motor, its characterized in that: the two motor rotating shafts are positioned on the same axis, the opposite ends of the rotating shafts of the left motor and the right motor are connected through a connecting/disconnecting device, a left planetary reduction mechanism is arranged at the left end of the left motor, the rotating shaft of the left motor is connected with a sun gear of the left planetary reduction mechanism, a planet carrier of the left planetary reduction mechanism is used for connecting a left wheel shaft, a right planetary reduction mechanism is arranged at the right end of the right motor, the rotating shaft of the right motor is connected with a sun gear of the right planetary reduction mechanism, and the planet carrier of the right planetary reduction mechanism is used for connecting a right wheel shaft.
The planetary reduction mechanism comprises a planetary carrier, a planetary shaft, a planetary gear, a sun gear, a gear ring and a planetary reduction mechanism shell, wherein the planetary carrier is fixedly connected with the planetary shaft, the planetary shaft is sleeved with the planetary gear, the planetary gear is meshed with the sun gear and the gear ring respectively, and the gear ring is fixedly connected with the planetary reduction mechanism shell.
The planetary gear comprises a first gear and a second gear, the two gears are all sleeved on the same planetary shaft in an empty mode, the first gear is meshed with the sun gear, and the second gear is meshed with the gear ring; alternatively, the planet gears may be double gears, wherein the first gear meshes with the sun gear and the second gear meshes with the ring gear.
The diameters of the first gear and the second gear are different.
The engaging/disengaging device is a clutch, a driving disc of the clutch is connected with a motor rotating shaft on one side, and a driven disc of the clutch is connected with a motor rotating shaft on the other side.
The engagement/disengagement device is a synchronizer, a gear hub of the synchronizer is fixedly connected to one end part of a motor shaft, the other end part of the motor shaft is fixedly connected with an engagement gear, and the engagement/disengagement of power transmission is formed by axial movement of an engagement gear sleeve of the synchronizer.
The technical scheme is adopted: the utility model provides a new energy automobile drive arrangement, includes left motor, right motor, its characterized in that: the two motor rotating shafts are positioned on the same axis, the opposite ends of the rotating shafts of the left motor and the right motor are connected through a connecting/disconnecting device, a left planetary reduction mechanism is arranged at the left end of the left motor, the rotating shaft of the left motor is connected with a sun gear of the left planetary reduction mechanism, a planet carrier of the left planetary reduction mechanism is used for connecting a left wheel shaft, a right planetary reduction mechanism is arranged at the right end of the right motor, the rotating shaft of the right motor is connected with a sun gear of the right planetary reduction mechanism, and the planet carrier of the right planetary reduction mechanism is used for connecting a right wheel shaft. The left motor and the right motor are connected by the connecting/disconnecting device, and the two motors can be independently driven or can be driven in parallel to cope with different working conditions, so that the production cost is saved, the planetary reduction mechanism is arranged between the motor and the wheel shaft, the radial size of the motor driving device is reduced, and the whole vehicle layout is optimized.
The planetary reduction mechanism comprises a planetary carrier, a planetary shaft, a planetary gear, a sun gear, a gear ring and a planetary reduction mechanism shell, wherein the planetary carrier is fixedly connected with the planetary shaft, the planetary shaft is sleeved with the planetary gear, the planetary gear is meshed with the sun gear and the gear ring respectively, and the gear ring is fixedly connected with the planetary reduction mechanism shell. The planetary gear comprises a first gear and a second gear, the two gears are all sleeved on the same planetary shaft in an empty mode, the first gear is meshed with the sun gear, and the second gear is meshed with the gear ring; alternatively, the planet gears may be double gears, wherein the first gear meshes with the sun gear and the second gear meshes with the ring gear. The diameters of the first gear and the second gear are different. The planetary reduction mechanism is used for reducing the output power of the motor and transmitting the reduced output power to the wheel shaft, and the planetary shaft, the motor rotating shaft and the wheel shaft of the planetary reduction mechanism are all coaxial, so that the radial size of the double-motor driving device is reduced, other parts are convenient to arrange, the space layout of a vehicle is optimized, and the production and manufacturing cost is reduced.
The engaging/disengaging device is a clutch, a driving disc of the clutch is connected with a motor rotating shaft at one side, and a driven disc of the clutch is connected with a motor rotating shaft at the other side; the engagement/disengagement device is a synchronizer, a gear hub of the synchronizer is fixedly connected to one end part of a motor shaft, the other end part of the motor shaft is fixedly connected with an engagement gear, and the engagement/disengagement of power transmission is formed by axial movement of an engagement gear sleeve of the synchronizer. The engagement/disengagement device enables the two motors to be driven independently or in parallel so as to meet different working conditions.
The new energy automobile driving device can select the operation modes of the double motors according to different working conditions to reduce energy consumption, realize energy conservation and emission reduction, arrange the rotating shafts of the two motors on the same axis, reduce radial size, optimize automobile space layout and save production and manufacturing cost.
The utility model is further described below with reference to the drawings and specific examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural diagram of another embodiment of the present utility model.
Detailed Description
Referring to fig. 1, a new energy automobile driving device comprises a left motor 3 and a right motor 5. The two motor rotating shafts are positioned on the same axis, and opposite ends of the rotating shafts of the left motor 3 and the right motor 5 are connected through an engaging/disengaging device 4. The engaging/disengaging device 4 in this embodiment is a clutch, and the driving disc of the clutch is fixedly connected with a motor rotating shaft, and the driven disc is fixedly connected with another motor rotating shaft. The left end of the left motor 3 is provided with a left planetary reduction mechanism 1, a rotating shaft of the left motor 3 is connected with a sun gear of the left planetary reduction mechanism 1, a planet carrier of the left planetary reduction mechanism 1 is used for being connected with a left wheel shaft, the right end of the right motor 5 is provided with a right planetary reduction mechanism 6, a rotating shaft of the right motor 5 is connected with a sun gear of the right planetary reduction mechanism 6, and a planet carrier of the right planetary reduction mechanism 6 is used for being connected with a right wheel shaft. The two planetary reduction mechanisms have the same structure, planetary shafts are fixedly connected to the planetary carrier 6b, planetary gears are sleeved on the planetary shafts in an empty mode, the planetary gears are meshed with the sun gear 6a and the gear ring 6c respectively, and the gear ring 6c is fixedly connected with the planetary reduction mechanism shell 2. The planetary shaft of the planetary reduction mechanism and the motor rotating shaft are positioned on the same axis. The planet gears comprise a first gear 6b1 and a second gear 6b2, the two gears are all sleeved on the same planet shaft, the first gear 6b1 is meshed with the sun gear 6a, and the second gear 6b2 is meshed with the gear ring 6 c. Alternatively, the planet gears may be double gears, wherein the first gear 6b1 is in mesh with the sun gear 6a and the second gear 6b2 is in mesh with the ring gear 6 c. The diameters of the first gear 6b1 and the second gear 6b2 are different.
Referring to fig. 2, the engagement/disengagement device 4 may also be a synchronizer, in which a hub 73 of the synchronizer is fixedly connected to one motor shaft end, and the other motor shaft end is fixedly connected to an engagement gear 71, and the engagement/disengagement of the power transmission is performed by axial movement of an engagement sleeve 72 of the synchronizer. When the engaging gear sleeve 72 moves to be sleeved on the engaging gear 71 and the gear hub 73 at the same time, the synchronizer is in an engaged state, so that parallel driving of two motors can be realized, and when the gear sleeve 72 is sleeved on the gear hub 73, the synchronizer is in a disconnected state, and the double-motor driving device is in a disconnected driving state, so that independent driving of the motors can be realized.
The motors used by the new energy automobile driving device are all bidirectional motors, the motors are in an electric driving state, torque is output to the outside, and forward or reverse driving can be realized; the device can also implement an energy recovery mode.
The power transmission path of the new energy automobile driving device in this embodiment is as follows, taking the right power output as an example, the output power of the right motor 5 is transmitted to the sun gear 6a of the right planetary reduction mechanism 6 through the motor rotating shaft, the sun gear 6a drives the first gear 6b1 and the second gear 6b2 to rotate and complete the reduction, the planet carrier 6b of the right planetary reduction mechanism 6 transmits the power to the right wheel axle, and the right wheel axle drives the wheels to rotate. The mode can realize forward or reverse driving of the vehicle, the motor is in an electric driving state, and torque is output outwards; the mode can also realize an energy recovery mode, and the motor is in a power generation state.
The working modes of the new energy automobile driving device of the embodiment are as follows:
1. when the engaging/disengaging means is disengaged
The engagement/disengagement means 4 are in a disengaged state, i.e. the mechanical power of the left motor 3 and the right motor 5 is decoupled. When the vehicle runs in a straight line, the controller controls the left motor and the right motor to output the same rotation speed and torque, and the left motor 3 and the right motor 5 respectively transmit power to the wheel shaft after being decelerated by the left planetary reduction mechanism 1 and the right planetary reduction mechanism 6. When the steering differential works, an electronic differential controller (not shown) calculates the rotation speeds of the inner wheel and the outer wheel according to the rotation angle change of the steering wheel, calculates the rotation speeds of the left motor and the right motor through the rotation speeds of the wheels on two sides and the reduction ratio, and the left motor and the right motor are respectively driven at the target rotation speeds (the target rotation speeds of the two motors are different) to form a speed difference, so that the electronic differential driving is realized, and the vehicle finishes stable turning. In this process, the left motor 3 and the right motor 5 respectively run at target rotational speeds, and output power to the left and right wheel ends after being decelerated by the left planetary reduction mechanism 1 and the right planetary reduction mechanism 6.
2. When the engaging/disengaging means is engaged
The engagement/disengagement means 4 are arranged in an engaged condition, i.e. the left motor 3 and the right motor 5 are rigidly connected, i.e. mechanically power coupled, and the left and right motors are operated at the same speed. Under the working condition of small power demand, the controller only controls one motor to output power, and as the engagement/disengagement device 4 is set to be in an engaged state, the other motor outputs the same speed along with the working motor, so that the vehicle is in a stable form, and in the process, the running demand can be met only by the motor to output power, the electric energy is saved, and the energy conservation and the emission reduction are realized; under the working condition that the power demand is large, the controller controls the two motors to output the same speed to realize double-motor parallel driving, the output power is large, the rapid running of the automobile is facilitated, and when the automobile is in a parallel driving state and skids on one side, the escape can be realized through the power output of the wheels on the other side, so that the automobile can obtain strong escape capability.
According to the new energy automobile driving device, the two motors are connected through the connecting/disconnecting device, when the connecting/disconnecting device is in a disconnected state, the double motors can realize independent driving, the wheels on the two sides are driven at different speeds respectively, and the differential mechanism is not required to be additionally arranged to adjust the wheel rotation speed difference when the automobile turns, so that the problems that the automobile manufacturing cost is high due to the fact that the differential mechanism is complex in structure, occupies a large arrangement space, affects the whole automobile layout and is avoided; when the engagement/disengagement device is in an engagement state, the double motors operate according to different working conditions, one motor works under the working condition of small power demand, electricity is saved, excessive electric energy consumption is prevented, and the motors are driven in parallel under the working condition of large power demand to increase output power; the motor rotating shaft and the planetary reduction mechanism are positioned on the same axis, so that the radial size is reduced, the space layout is optimized, and the production and manufacturing cost is saved.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and those skilled in the art will appreciate that the modifications made to the utility model fall within the scope of the utility model without departing from the spirit of the utility model.
Claims (7)
1. The utility model provides a new energy automobile drive arrangement, includes left motor (3), right motor (5), its characterized in that: the two motor rotating shafts are positioned on the same axis, opposite ends of the rotating shafts of the left motor (3) and the right motor (5) are connected through a joint/disconnection device (4), a left planetary reduction mechanism (1) is arranged at the left end of the left motor (3), the rotating shaft of the left motor (3) is connected with a sun gear of the left planetary reduction mechanism (1), a planet carrier of the left planetary reduction mechanism (1) is used for connecting a left wheel shaft, a right planetary reduction mechanism (6) is arranged at the right end of the right motor (5), the rotating shaft of the right motor (5) is connected with a sun gear of the right planetary reduction mechanism (6), and the planet carrier of the right planetary reduction mechanism (6) is used for connecting a right wheel shaft.
2. The new energy automobile driving device according to claim 1, wherein: the two planetary reduction mechanisms are identical in structure, planetary shafts are fixedly connected to the planetary carrier (6 b), planetary gears are sleeved on the planetary shafts in a hollow mode, the planetary gears are meshed with the sun gear (6 a) and the gear ring (6 c) respectively, and the gear ring (6 c) is fixedly connected with the planetary reduction mechanism shell (2).
3. The new energy automobile driving device according to claim 2, wherein: the planet gears comprise a first gear and a second gear, the two gears are all sleeved on the same planet shaft in an empty mode, the first gear is meshed with the sun gear (6 a), and the second gear is meshed with the gear ring (6 c).
4. The new energy automobile driving device according to claim 2, wherein: the planetary gears are duplex gears, wherein a first gear is meshed with the sun gear (6 a), and a second gear is meshed with the gear ring (6 c).
5. The new energy automobile driving device according to claim 3 or 4, characterized in that: the diameters of the first gear and the second gear are different.
6. The new energy automobile driving device according to claim 1, wherein: the engagement/disengagement device (4) is a clutch, the driving disc of the clutch is connected with a motor rotating shaft, and the driven disc is connected with another motor rotating shaft.
7. The new energy automobile driving device according to claim 1, wherein: the engagement/disengagement device (4) is a synchronizer, a gear hub (73) of the synchronizer is fixedly connected to one motor shaft end, the other motor shaft end is fixedly connected with an engagement gear (71), and the engagement/disengagement of power transmission is formed by axial movement of an engagement gear sleeve (72) of the synchronizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320343665.7U CN219856810U (en) | 2023-02-28 | 2023-02-28 | New energy automobile drive arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320343665.7U CN219856810U (en) | 2023-02-28 | 2023-02-28 | New energy automobile drive arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN219856810U true CN219856810U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320343665.7U Active CN219856810U (en) | 2023-02-28 | 2023-02-28 | New energy automobile drive arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219856810U (en) |
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2023
- 2023-02-28 CN CN202320343665.7U patent/CN219856810U/en active Active
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