CN210706891U - Multi-motor automobile transmission system and automobile - Google Patents

Abstract

The utility model relates to a multi-motor automobile transmission system and an automobile, relating to the technical field of automobile transmission systems, comprising a shell, at least one group of driving motors connected on the shell, an output gear carrier connected on an output shaft of the driving motors, a gear shifting mechanism connected with the output gear carrier and a bracket gear meshed with the gear shifting mechanism; the two driving motors are in a group and are respectively connected with the bracket gear through the output gear rack and the gear shifting mechanism; the gear shifting mechanism is divided into two gears to connect the output gear carrier with the bracket gear; the support is connected to the drive axle through a gear to drive the wheels to rotate. The utility model discloses a transmission system adopts many motor drives to through increase height fender speed change mechanism in power transmission system, make the car can enough realize the height and keep off the variable speed, can provide bigger drive power again, realize the energy storage simultaneously and retrieve and then increase the continuation of the journey mileage.

Description

Multi-motor automobile transmission system and automobile

Technical Field

The utility model belongs to the technical field of automobile transmission's technique and specifically relates to a many motor automobile transmission and car is related to.

Background

At present, the drive train of a motor vehicle primarily transmits the power of the engine to the vehicle drive axles via clutches, transmissions, propeller shafts, differentials, etc., wherein the clutches, transmissions, etc. are also equipped with corresponding operating mechanisms. With the increasing shortage of petroleum resources and the increasingly bad influence of exhaust emission on the environment, new energy automobiles (especially pure electric vehicles) are more and more emphasized by people, and a plurality of encouraging measures are also brought out by the country to further promote the development of electric vehicle technology. The driving system of the electric automobile drives the motor to transmit power to the wheels by the vehicle-mounted power supply to drive the whole automobile to run. If the speed changer is adopted to realize gear shifting, the development and production cost of the speed changer is high, the structure is complex, faults are easy to occur, and the maintenance cost is high. The cost of the electric automobile at the present stage is high to a great extent, and the electric automobile becomes the biggest obstacle of popularization and application of the electric automobile. Therefore, the existing electric automobile usually adopts the installation of a variable speed motor to realize gear shifting, but the variable speed motor consumes large power and is not easy to realize high-low gear shifting.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a many motor automobile transmission system and car adopts many motor drives to through increase height in power transmission system and keep off speed change mechanism, make the car can enough realize the height and keep off the variable speed, can provide bigger drive power again, realize energy storage recovery and then increase continuation of the journey mileage simultaneously.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a multi-motor automobile transmission system comprises a shell, at least one group of driving motors connected to the shell, an output gear carrier connected to an output shaft of the driving motors, a gear shifting mechanism connected with the output gear carrier and a bracket gear in meshed connection with the gear shifting mechanism; the two driving motors are in a group, wherein the rotor of one driving motor is a flywheel rotor and is respectively connected with the bracket gear through the output gear rack and the gear shifting mechanism; the gear shifting mechanism is divided into two gears to connect the output gear carrier with the bracket gear; the support is connected to the drive axle through a gear to drive the wheels to rotate.

By adopting the technical scheme, the support gear and the drive axle are driven to rotate by the at least two motors, so that stronger power can be provided for the electric automobile when the electric automobile climbs a slope; the output shaft of the motor is connected with the drive axle through the output gear rack and the gear shifting mechanism, the gear shifting mechanism is set to output two gears, and high-low gear speed change is added on the basis of speed change of the speed change motor, so that the braking of the electric automobile is more flexible and safer; one of the driving motors adopts a flywheel motor, and when the automobile is started or accelerated, the multi-motor driving can overcome the flywheel starting loss: the driving mileage of the automobile is improved, the driving motor can be stopped from rotating when the automobile runs downhill or in an inertial running mode, energy storage and recovery are achieved by utilizing the flywheel motor for energy storage and power generation, and the cruising ability of the automobile is improved.

The utility model discloses further set up to: the output shaft of the driving motor is connected with the output gear carrier through a planetary gear mechanism, the planetary gear mechanism comprises a gear ring arranged in the shell, a sun gear connected to the output shaft of the driving motor and planetary gears respectively meshed with the gear ring and the sun gear, and the rotating shaft of the planetary gears is connected with the output gear carrier.

Through adopting above-mentioned technical scheme, driving motor's power adopts planet wheel mechanism to outwards export, can play the effect of speed reduction to planet wheel mechanism rigidity is good, the precision is all higher, and transmission efficiency is high, and the maintenance cycle is long, is used in on the motor output shaft, can improve whole transmission system's performance.

The utility model discloses further set up to: the output gear carrier is provided with a first output gear and a second output gear, and the number of teeth of the first output gear is greater than that of the second output gear.

By adopting the technical scheme, the output gear carrier adopts two gears with different tooth numbers to carry out power output and is used for corresponding to two gears of the gear shifting mechanism, thereby realizing high-low gear speed change in a transmission system.

The utility model discloses further set up to: the gear shifting mechanism comprises a transmission shaft, a driving gear arranged at one end of the transmission shaft, and a high-gear and a low-gear which are sleeved on the transmission shaft, wherein the driving gear is meshed with the bracket gear, the high-gear is meshed with the first output gear, and the low-gear is meshed with the second output gear; the high-gear and low-gear transmission mechanism is characterized in that a shifting shaft sleeve is arranged between the high-gear and low-gear, the shifting shaft sleeve is in key connection with the transmission shaft, a shifting fork is connected to the shifting shaft sleeve, and the shifting fork shifts the shifting shaft sleeve to be connected with the high-gear or low-gear.

By adopting the technical scheme, the gear shifting mechanism adopts the high-gear and the low-gear to be respectively meshed with the first output gear and the second output gear, and the transmission shaft is respectively meshed with the first output gear and the second output gear by shifting the movement of the shaft sleeve; when the speed is changed, the shifting shaft sleeve is shifted by the shifting fork to be connected with the high-gear, so that the transmission shaft is connected with the high-gear, and the drive axle rotates at a high speed; the shifting fork is used for shifting the shifting shaft sleeve to be connected with the low-gear, so that the transmission shaft is meshed with the low-gear, and the drive axle rotates at a low speed, so that the speed change between high and low gears is realized.

The utility model discloses further set up to: and splines are arranged on one sides of the high-gear and the low-gear, which face the shifting shaft sleeve, and the inner wall of the shifting shaft sleeve is meshed with the high-gear and the low-gear through key connection.

Through adopting above-mentioned technical scheme, stir axle sleeve and high-speed gear and low-speed gear, make stir the axle sleeve and remove just can accomplish the meshing or the separation of stirring axle sleeve high-speed gear or low-speed gear.

The utility model discloses further set up to: the difference between the number of teeth of the high-gear and the number of teeth of the first output gear is not more than 3, and the number of teeth of the low-gear is larger than that of the high-gear.

By adopting the technical scheme, the difference between the number of the high-gear and the number of the first output gear is smaller, so that the difference between the output rotating speed of the output shaft of the driving motor and the output rotating speed of the transmission shaft is very small when the transmission system is in high-gear transmission, and the high-speed rotation of the transmission system is further realized; the difference of the number of teeth of the low-gear and the second output gear is large, the number of teeth of the second output gear is far larger than that of the low-gear, the output rotating speed transmitted to the transmission shaft through the output shaft of the driving motor is greatly reduced, the torque is greatly improved, and the low-speed rotation and the large torque output required by climbing of the transmission system are realized.

The utility model discloses further set up to: the first output gear and the output gear carrier are of an integrated structure, and the second output gear is connected to the output gear carrier through a key.

By adopting the technical scheme, the first output gear and the output gear carrier are integrally formed, so that the stability of power transmission is ensured, and the compactness of the whole mechanism is also ensured. The second output gear is connected with the output gear carrier through a key, so that the output gear carrier is convenient to mount and a bearing on the output gear carrier is convenient to mount.

The utility model discloses further set up to: and the other end of the output shaft of the driving motor is connected with an auxiliary driving motor.

By adopting the technical scheme, the motors are arranged at the two ends of the power output shaft, the driving axle is driven to rotate by adopting a plurality of motors, larger driving force can be provided for the driving axle, two motors at the same end form a group, and each group of motors can independently run; when the automobile climbs a slope, a plurality of motors can be started simultaneously, so that stronger power is provided for the automobile, and the climbing capability of the automobile is improved; when the automobile runs downhill or in inertia mode, the motor can be completely or partially turned off to achieve the purpose of reducing energy consumption; the inertia of the vehicle is utilized to drive the flywheel motor to continue rotating, the flywheel motor is used for generating electricity, the storage and the recovery of energy are completed, and the cruising ability of the automobile is enhanced.

The utility model also provides an automobile, the automobile includes the aforesaid transmission system.

Through adopting above-mentioned technical scheme, the car has adopted foretell transmission system, can reduce the dead weight of car, reduces the manufacturing cost of car, makes the great promotion of the drive power and the duration of a journey ability of car.

To sum up, the utility model discloses a beneficial technological effect does:

1. the utility model discloses in adopt a transaxle of many motor drives, make whole transmission system's output power stronger, two a set of motors both can provide drive power simultaneously by many motors, can provide drive power by partial motor again, another part motor acts as the generator and carries out energy storage recovery, reinforcing electric automobile's duration.

2. The utility model provides an all set up a flywheel motor in driving motor group and the auxiliary driving motor group, flywheel motor rotation partly gets off as power take off, partly as energy storage. When the automobile is decelerated by resistance, the flywheel motor can actively compensate speed loss, and when the automobile is braked, redundant kinetic energy of the flywheel motor is converted into electric energy to be stored for later use, so that the stored electric quantity of the automobile is increased.

3. Adopt planet wheel mechanism and gear shifting mechanism to be connected between driving motor and the transaxle, carry out the variable speed through planet wheel mechanism and gear shifting mechanism to transmission system, and need not increase independent speed change mechanism in transmission system, effectively reduce the dead weight of car, also reduced the manufacturing cost of car simultaneously.

4. The gear shifting mechanism adopts the shifting fork to shift the shifting shaft sleeve to be meshed with the high gear and the low gear, the whole gear shifting mechanism is simple in structure, and the gear shifting is simple, direct and reliable, so that the electric automobile can smoothly realize the speed change of the high gear and the low gear.

5. The driving motor is correspondingly provided with two sets of speed change mechanisms, the two sets of speed change mechanisms are both provided with high-low two-stage speed change, the speed change mechanism can be used in a staggered mode, two gears can be kept out and kept out in a high mode through single use, the two gears can be combined to form a plurality of groups of gears which are in double low gear, double high gear and one high-low gear, the speed change gear of the automobile is more, driving force and torque are combined organically, and the defect that the torque is large and the power consumption is high when a motor bridge is high in speed can be overcome.

Drawings

Fig. 1 is a schematic structural diagram of the transmission system of the present invention.

Fig. 2 is a connection structure diagram of the middle gear shift mechanism and the bracket gear of the present invention.

Fig. 3 is a schematic structural diagram of the middle shift mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the power output of the driving motor of the present invention.

In the figure, 1, a driving motor, 2, an output gear carrier, 21, a first output gear, 22, a second output gear, 3, a gear shifting mechanism, 31, a transmission shaft, 32, a driving gear, 33, a high gear, 34, a low gear, 35, a toggle shaft sleeve, 36, a shifting fork, 37 and a spline; 4. a carrier gear 5, a planet gear mechanism 51, a gear ring 52, a sun gear 53, a planet gear 6 and an auxiliary driving motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a many motor automobile transmission system, including casing, driving motor 1, transmission structure and transaxle, wherein driving motor 1 installs on the casing, and transmission structure installs in the casing, and the transaxle is connected with transmission structure to outwards stretch out from the casing.

Divide into two sets ofly with the motor in this embodiment, two motors of every group, including a set of driving motor 1 and a set of auxiliary driving motor 6, one of them driving motor 1 in every group motor and auxiliary driving motor 6's rotor are the flywheel rotor, power cord is connected alone to every motor, supply power by the battery is unified, two driving motor 1 install at the transaxle same end, connect a set of transmission structure respectively, connect the same one side at the casing through the ring flange, the axial of output shaft is the same with the output axial of transaxle, auxiliary driving motor 6 and driving motor 1 share an output shaft, connect the other end at the output shaft, and install the opposite side at the casing. When the motor works, a plurality of motors can work or stop at the same time, and the auxiliary driving motor 6 can not work independently.

The transmission structure comprises an output gear carrier 2 and a gear shifting mechanism 3, wherein the output gear carrier 2 is connected to an output shaft of the driving motor 1 through a planetary gear mechanism 5, a shaft hole is formed in the middle of the output gear carrier 2, so that the output shaft of the driving motor 1 can be sleeved with the shaft hole, the planetary gear mechanism 5 outputs the power of the driving motor 1 to the output gear carrier 2, an output gear is arranged on the output gear carrier 2, and the output gear is meshed with the gear shifting mechanism 3; the gear shifting mechanism 3 is divided into a high gear and a low gear, the two gears are switched, power is output according to the high gear and the low gear, the gear shifting mechanism 3 also adopts a gear set structure, and the high gear and the low gear correspond to two output gears of the output gear carrier 2; the output end of the gear shifting mechanism 3 is connected with a support gear 4 in a meshing mode, the support gear 4 is connected to a drive axle, two half shafts extend out of the drive axle, wheels are connected to the end portions of the half shafts, and power after gear shifting is transmitted to the drive axle through the support gear 4.

Referring to fig. 2 and 3, a bearing is connected between the output gear carrier 2 and the housing, a first output gear 21 and a second output gear 22 are respectively arranged on two sides of the bearing, the first output gear 21 is arranged at one end of the output gear carrier 2 close to the driving motor 1, the second output gear 22 is arranged at the other end of the output gear carrier 2, the first output gear 21 and the output gear carrier 2 are of an integral structure, and the second output gear 22 is connected to the output gear carrier 2 through a key, so that the output gear carrier 2 can be detached and the bearing on the output gear carrier 2 can be detached conveniently; the parameters (except the module) of the first output gear 21 and the second output gear 22 are the same. The number of teeth of the first output gear 21 is greater than that of the second output gear 22, and in this embodiment, the number of teeth of the first output gear 21 is 33, and the number of teeth of the second output gear 22 is 22.

The gear shifting mechanism 3 comprises a transmission shaft 31, a driving gear 32 arranged at one end of the transmission shaft 31, and a high-gear 33 and a low-gear 34 sleeved on the transmission shaft 31; the axial direction of the transmission shaft 31 is the same as the axial direction of the output shaft of the driving motor 1, and two ends of the transmission shaft are connected in the shell through bearings; the driving gear 32 is connected to the transmission shaft 31 through a key, is arranged at one end of the transmission shaft 31 close to the driving motor 1, and is meshed with the bracket gear 4; the high gear 33 and the low gear 34 are both sleeved on the transmission shaft 31, the high gear 33 is meshed with the first output gear 21, the low gear 34 is meshed with the second output gear 22, a spline 37 is arranged on the transmission shaft 31 between the high gear 33 and the low gear 34, a spline 37 is also arranged on one side of the high gear 33 opposite to one side of the low gear 34, a shifting shaft sleeve 35 is slidably sleeved on the position of the transmission shaft 31 between the high gear 33 and the low gear 34, the inner wall of the shifting shaft sleeve 35 is provided with a spline groove so as to be connected with the transmission shaft 31 through the spline groove, the outer wall of the shifting shaft sleeve 35 is circumferentially provided with a circle of groove, the groove is internally connected with a shifting fork 36, the shifting fork 36 is controlled by an automobile gear lever and is shifted along the axial direction of the transmission shaft 31, thereby causing the sleeve 35 to slide in the direction of the high gear 33 or the low gear 34 and to be keyed with the high gear 33 or the low gear 34.

In this embodiment, the difference between the numbers of teeth of the high-speed gear 33 and the first output gear 21 is not greater than 3, specifically, the number of teeth of the high-speed gear 33 is 35, the number of teeth of the low-speed gear 34 is greater than the number of teeth of the high-speed gear 33, and the number of teeth is 44. When the toggle shaft sleeve 35 moves to be connected with the high-gear 33, the first output gear 21 is connected with the transmission shaft 31, power is output outwards by means of the high-gear 33, the number of teeth of the high-gear 33 and the first output gear 21 is close, the power output rotating speed is not changed greatly, and the transmission shaft 31 rotates at a high speed; when the toggle shaft sleeve 35 moves to be connected with the low gear 34, the connection between the second output gear 22 and the transmission shaft 31 is realized, power is output outwards by means of the low gear 34, because the number of teeth of the second output gear 22 is smaller than that of the first output gear 21, the number of teeth of the low gear 34 is much larger than that of the second output gear 22, the power is transmitted by meshing the second output gear 22 with the low gear 34, the output speed of the transmission shaft 31 is greatly reduced, and the whole system performs low-speed rotation output; when the toggle shaft sleeve 35 is located at the middle position, the whole system is in a neutral state.

Referring to fig. 4, the output shaft of the driving motor 1 is connected to the output gear carrier 2 through the planetary gear mechanism 5, specifically, the planetary gear mechanism 5 includes a ring gear 51, a sun gear 52 and three planetary gears 53, the ring gear 51 is installed in the housing, the sun gear 52 is connected to the output shaft of the driving motor 1 in a key manner, the three planetary gears 53 are uniformly distributed around the sun gear 52 and respectively engaged with the ring gear 51 and the sun gear 52, the rotating shaft of the planetary gear 53 is connected to the output gear carrier 2, and the planetary gear 53 revolves around the sun gear 52 to drive the output gear carrier 2 to rotate, so as to transmit power.

The utility model also provides a car, this car are electric automobile, adopt the transmission system in this embodiment, provide power output for entire system through the battery, guarantee that many motors can move simultaneously, after adopting this system, electric automobile's variable speed effect is showing and is promoting, and drive power and duration obviously improve. When the automobile starts, the multi-motor is controlled to drive, and the common motor and the flywheel motor are matched with each other, so that the periodic driving force change of the single motor can be compensated, and the effect of continuous and rapid acceleration can be achieved; when the automobile is decelerated by resistance, the flywheel motor can actively compensate speed loss; when the automobile runs by inertia or runs downhill, redundant kinetic energy of the flywheel motor is converted into electric energy to be stored, the flywheel motor is convenient to use when the automobile is restarted, and the navigation mileage of the automobile can be enhanced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. A multi-motor automobile transmission system is characterized in that: the gear shifting mechanism comprises a machine shell, at least one group of driving motors (1) connected to the machine shell, an output gear carrier (2) connected to an output shaft of the driving motors (1), a gear shifting mechanism (3) connected with the output gear carrier (2) and a bracket gear (4) in meshed connection with the gear shifting mechanism (3);

the two driving motors (1) are in a group, wherein the rotor of one driving motor (1) is a flywheel rotor and is respectively connected with a bracket gear (4) through an output gear rack (2) and a gear shifting mechanism (3);

the gear shifting mechanism (3) is divided into two gears to connect the output gear carrier (2) with the bracket gear (4);

the support gear (4) is connected to the drive axle and drives the wheels to rotate.

2. A multi-motor vehicle driveline as recited in claim 1, wherein: the output shaft of the driving motor (1) is connected with the output gear carrier (2) through a planetary gear mechanism (5), the planetary gear mechanism (5) comprises a gear ring (51) arranged in the shell, a sun gear (52) connected to the output shaft of the driving motor (1) and planetary gears (53) meshed with the gear ring (51) and the sun gear (52) respectively, and the rotating shaft of the planetary gear (53) is connected with the output gear carrier (2).

3. A multi-motor vehicle driveline as recited in claim 1, wherein: the output gear rack (2) is provided with a first output gear (21) and a second output gear (22), and the number of teeth of the first output gear (21) is greater than that of the second output gear (22).

4. A multi-motor vehicle driveline as recited in claim 3, wherein: the gear shifting mechanism (3) comprises a transmission shaft (31), a driving gear (32) arranged at one end of the transmission shaft (31), and a high-gear (33) and a low-gear (34) which are sleeved on the transmission shaft (31), wherein the driving gear (32) is meshed with the bracket gear (4), the high-gear (33) is meshed with the first output gear (21), and the low-gear (34) is meshed with the second output gear (22); be provided with between high gear (33) and low gear (34) and stir axle sleeve (35), stir axle sleeve (35) and transmission shaft (31) key-type connection, be connected with shift fork (36) on stirring axle sleeve (35), shift fork (36) stir axle sleeve (35) and high gear (33) or low gear (34) are connected.

5. A multi-motor vehicle driveline as recited in claim 4, wherein: and splines (37) are arranged on one sides of the high gear (33) and the low gear (34) facing the toggle shaft sleeve (35), and the inner wall of the toggle shaft sleeve (35) is meshed and linked with the splines (37).

6. A multi-motor vehicle driveline as recited in claim 4, wherein: the difference of the number of teeth of the high-speed gear (33) and the first output gear (21) is not more than 3, and the number of teeth of the low-speed gear (34) is more than that of the high-speed gear (33).

7. A multi-motor vehicle driveline as recited in claim 3, wherein: the first output gear (21) and the output gear carrier (2) are of an integral structure, and the second output gear (22) is connected to the output gear carrier (2) through a key.

8. A multi-motor vehicle driveline as recited in claim 1, wherein: the other end of the output shaft of the driving motor (1) is connected with an auxiliary driving motor (6).

9. An automobile, characterized in that: the vehicle comprising a transmission system according to any one of claims 1-8.

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