CN217477088U

CN217477088U - Pure electric double-motor two-gear electric driving system and vehicle

Info

Publication number: CN217477088U
Application number: CN202221358782.2U
Authority: CN
Inventors: 宋鹏飞
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-23
Anticipated expiration: 2032-05-31

Abstract

The utility model belongs to the technical field of electric automobile drives, a two fender electricity of electricelectric motor drive system and vehicle is disclosed, two fender electricity of electricelectric motor drive system include main motor, vice motor, planetary gear set and second grade reduction gear group, main motor passes through the sun gear that main motor one-level reduction gear group connects planetary gear set, connect through first clutch between ring gear and the sun gear, vice motor passes through vice motor one-level reduction gear group and second clutch connection second grade reduction gear group, differential mechanism is connected to second grade reduction gear group's output, second grade reduction gear group's input and planet carrier rigid connection. The utility model discloses the fender position that is convenient for realize main motor and vice motor changes, has avoided the power interruption problem of the in-process of shifting, has the fast advantage of power response.

Description

Pure electric double-motor two-gear electric driving system and vehicle

Technical Field

The utility model relates to an electric automobile drives technical field, especially relates to a two fender electricity of pure electric motor drive system and vehicle.

Background

In the patent documents disclosed at present, a single-motor single-gear product or a single-motor double-gear product is more, and the gear shifting power interruption condition exists in part of electric drive systems.

Along with the improvement of the requirements of oil consumption and dynamic property of the whole vehicle, new energy electric drive products are also developing to large torque and low energy consumption. In order to reduce oil consumption, part of electric drive products adopt a two-gear structure, including a single-motor two-gear structure and a double-motor two-gear structure.

The single motor two gears can be divided into a parallel shaft type and a coaxial type, mostly, the gears are shifted by a synchronizer or a clutch, and the two modes have power interruption.

Two keep off and mostly be the parallel shaft type, mostly be the synchronous ware and shift, have the slow problem of power response, can not fine satisfy whole car acceleration nature demand.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a two fender electricity of electricelectric motor drive system to there is power interruption and two slow problems of shelves response of two motors in solving two shelves of single motor.

A second object of the present invention is to provide a vehicle to solve the problems of power interruption and slow response in the two-gear structure.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a two fender electricity of pure electric machine drive system, includes:

the output shaft of the main motor is provided with a primary speed reduction gear set of the main motor,

an output shaft of the auxiliary motor is provided with an auxiliary motor primary reduction gear set;

the planetary gear set comprises a gear ring, a planetary gear, a planet carrier and a sun gear, the gear ring is connected with the sun gear through a first clutch, the sun gear is connected with the output end of the primary speed reduction gear set of the main motor, and the planetary gear is meshed with the gear ring;

the input end of the secondary reduction gear set is rigidly connected with the planet carrier, the output end of the primary reduction gear set of the auxiliary motor is connected with the secondary reduction gear set through a second clutch, and the output end of the secondary reduction gear set is connected with the differential mechanism.

Optionally, the primary speed reduction gear set of the main motor comprises a first gear and a second gear, the first gear is rigidly connected with the rotor shaft of the main motor, the second gear is in meshed transmission connection with the first gear, and the second gear is rigidly connected with the sun gear.

Optionally, the secondary motor primary reduction gear set includes a third gear and a fourth gear, the third gear is rigidly connected to the rotor shaft of the secondary motor, the fourth gear is in meshed transmission connection with the third gear, and the fourth gear is fixedly connected to the secondary reduction gear set through the second clutch.

Optionally, the secondary reduction gear set includes a fifth gear and a sixth gear, the fifth gear is rigidly connected to the planet carrier, the sixth gear is in meshed transmission with the fifth gear, the sixth gear is rigidly connected to the differential, and the fourth gear is fixedly connected to the fifth gear through the second clutch.

Optionally, the second clutch is disposed at an axial center of the fifth gear, the fourth gear is connected to the second clutch through a transmission shaft to be fixedly connected to the fifth gear, and the fourth gear is coaxial with the fifth gear.

Optionally, the second clutch is a one-way clutch.

Optionally, the electric-only dual-motor two-gear electric drive system further comprises a locking mechanism configured to fix or separate the gear ring.

Optionally, the main motor and the auxiliary motor are arranged on the same side or different sides of the sun gear.

Optionally, the primary motor and the secondary motor are arranged with parallel axes.

The utility model discloses a two fender electric drive systems of electricelectric bi-motor, through connecting planetary gear set with the output of main motor one-level reduction gear set to connect sun gear and ring gear through first clutch, be convenient for realize the high-low speed gear change of main motor, avoided the power interruption problem in the gear shifting process; the output end of the primary speed reduction gear set of the auxiliary motor is connected with the secondary speed reduction gear set through the second clutch, the auxiliary motor is directly transmitted to the differential through the secondary speed reduction gear set after being started, and the secondary motor is integrated with the power of the main motor, so that the auxiliary motor has the advantage of quick power response, and the acceleration effect is convenient to improve.

The utility model provides a vehicle, include the utility model provides a two fender electricity of electricelectric motor drive system.

The utility model has the advantages that:

the utility model discloses a vehicle, the output of main motor one-level reduction gear set connects planetary gear set's sun gear, combines to be connected through first clutch between sun gear and the ring gear, realizes the high low-speed gear change of main motor and switches over, has solved the power interruption problem of prior art; the auxiliary motor primary reduction gear set is connected into the secondary reduction gear set through the second clutch and is transmitted to the differential mechanism, the auxiliary motor primary reduction gear set has the advantage of fast power response, and the acceleration and deceleration control is convenient to realize fast.

Drawings

Fig. 1 is a schematic structural view of a pure electric dual-motor two-gear electric driving system according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a pure electric double-motor two-gear electric drive system provided by the embodiment of the present invention.

In the figure:

1. a main motor; 11. a first gear; 12. a second gear; 2. a secondary motor; 21. a third gear; 22. a fourth gear; 23. a first drive shaft; 24. a second drive shaft; 3. a planetary gear set; 31. a ring gear; 32. a planet wheel; 33. a planet carrier; 34. a sun gear; 4. a first clutch; 5. a secondary reduction gear set; 51. a fifth gear; 52. a sixth gear; 6. a second clutch; 7. a differential mechanism; 8. and a locking mechanism.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The first embodiment is as follows: a pure electric double-motor two-gear electric driving system.

As shown in fig. 1, the first pure electric motor two-gear electric driving system provided in this embodiment includes a main motor 1, an auxiliary motor 2, a planetary gear set 3, and a secondary reduction gear set 5, where a primary reduction gear set of the main motor is provided on an output shaft of the main motor 1, and a primary reduction gear set of the auxiliary motor is provided on an output shaft of the auxiliary motor 2; the planetary gear set 3 comprises a gear ring 31, a planetary gear 32, a planet carrier 33 and a sun gear 34, the gear ring 41 is connected with the sun gear 34 through a first clutch 4, the sun gear 34 is connected with the output end of the primary speed reduction gear set of the main motor, and the planetary gear 32 is meshed with the gear ring 31; the input end of the secondary reduction gear set 5 is rigidly connected with the planet carrier 33, the output end of the primary reduction gear set of the auxiliary motor is connected with the secondary reduction gear set 5 through the second clutch 6, and the output end of the secondary reduction gear set 5 is connected with the differential 7.

The utility model discloses a two fender electric drive systems of electricelectric bi-motor, as shown in fig. 1, main motor one-level reduction gear's output fixed connection planetary gear set 3, and connect sun gear 34 through first clutch 4, in this embodiment, because main motor one-level reduction gear's output and planetary gear set 3 are rigid connection, consequently connect first clutch 4 between ring gear 31 and sun gear 34, or connect between ring gear 31 and main motor one-level reduction gear, be convenient for realize the fender position change of main motor 1 and auxiliary motor 2, power interruption problem in the process of shifting has been avoided; the output end of the primary reduction gear set of the auxiliary motor is connected with the secondary reduction gear set 5 through the second clutch 6, and the auxiliary motor 2 is directly transmitted to the differential 7 through the secondary reduction gear set 5 after being started.

Optionally, as shown in fig. 1, the primary speed reduction gear set of the main motor includes a first gear 11 and a second gear 12, the first gear 11 is rigidly connected to a rotor shaft of the main motor 1, the second gear 12 is in meshing transmission connection with the first gear 11, the second gear 12 is rigidly connected to the sun gear 34, and the second gear 12 is connected to the gear ring 31 through the first clutch 4, so that the main motor 1 is operated to shift gears through the first clutch 4, the gear shifting is continuous and uninterrupted, and the problem of power interruption in the gear shifting process in the prior art is solved. It should be noted that, for the requirement of space arrangement and the requirement of actual transmission speed ratio, the number of gears in the primary reduction gear set of the main motor is not limited to the first gear 11 and the second gear 12, and may be two or more, and this embodiment is not limited.

Optionally, the secondary motor primary reduction gear set comprises a third gear 21 and a fourth gear 22, the third gear 21 is rigidly connected with the rotor shaft of the secondary motor 2, the fourth gear 22 is in meshed transmission connection with the third gear 21, and the fourth gear 22 is fixedly connected with the secondary reduction gear set 5 through the second clutch 6.

It can be understood that the auxiliary motor 2 is connected into the secondary reduction gear set 5 through the second clutch 6, when the main motor 1 is in a high-speed gear working condition, the auxiliary motor 2 can be directly started and transmits drive to the differential mechanism 7, the power response is fast, and the device is particularly suitable for the working condition of high-speed overtaking. The number of gears of the secondary motor primary reduction gear set is not limited to two.

Optionally, the two-stage reduction gear set 5 includes a fifth gear 51 and a sixth gear 52, the fifth gear 51 is rigidly connected to the carrier 33, the sixth gear 52 is in meshed transmission with the fifth gear 51, the sixth gear 52 is rigidly connected to the differential 7, and the fourth gear 23 is fixedly connected to the fifth gear 51 through the second clutch 6.

It should be noted that the number of gears of the two-stage reduction gear set 5 is not limited to two, and the number of gears may be increased as necessary to realize speed ratio adjustment.

Alternatively, the second clutch 6 is disposed at the axial center of the fifth gear 51, the fourth gear 23 is connected with the second clutch 6 through a transmission shaft to be fixedly connected to the fifth gear 51, and the fourth gear 23 is coaxial with the fifth gear 51.

As shown in fig. 1, the axis of the fourth gear 23 is fixedly connected to the first transmission shaft 23, the other end of the first transmission shaft 23 is connected to the second clutch 6, the second clutch 6 is fixed to the axis of the fifth gear 51, so that the fourth gear 23 and the fifth gear 51 are coaxially arranged, after the auxiliary motor 2 is started, the driving force is directly transmitted to the second-stage reduction gear set 5 through the second clutch 6, and then is transmitted to the differential 7, so that the driving of the wheels is realized, and the power response is fast. Preferably, the second clutch 6 is a one-way clutch, which realizes the connection between the output end of the main motor 1 and the output end of the auxiliary motor 2, and can be quickly connected when power is needed, and the output end of the auxiliary motor 2 can be automatically disconnected when power is not needed.

Optionally, the electric-only two-motor two-gear electric drive system further comprises a locking mechanism 8, and the locking mechanism 8 is configured to fix or separate the gear ring 31.

As shown in fig. 1, the locking mechanism 8 is fixedly disposed, and may be disposed on a housing or a frame, and when the locking mechanism 8 fixes the ring gear 31, the driving force of the main motor 1 passes through the main motor primary reduction gear set, the sun gear 34 of the planetary gear set 3, the carrier 33, to the secondary reduction gear set 5, and is transmitted to the wheels through the differential 7; at this time, the auxiliary motor 2 can be started to work or be static, so that gear shifting control in normal running speed is facilitated. When the locking mechanism 8 separates the gear ring 31, the gear ring 31 and the sun gear 34 are connected in a combined manner through the first clutch 4, so that the power output of the high-speed gear of the main motor 1 is facilitated, and the auxiliary motor 2 is directly driven and loaded to the secondary reduction gear set 5 after being started, so that the power response is fast.

In the first embodiment, as shown in fig. 1, the primary motor 1 and the secondary motor 2 are disposed on the same side of the sun gear 34, the primary motor 1 and the secondary motor 2 are disposed in parallel, the fourth gear 22 of the primary reduction gear set of the secondary motor is connected to the second clutch 6 through the first transmission shaft 23 passing through the center hole of the second gear 12, and the second clutch 6 is a one-way clutch, so that the driving force of the secondary motor 2 can be directly transmitted to the differential 7 through the secondary reduction gear set 5, and the advantage of fast power response is provided.

The second embodiment: a pure electric double-motor two-gear electric driving system.

The difference between the pure electric double-motor two-gear electric driving system provided in the second embodiment and the first embodiment is that the main motor 1 and the auxiliary motor 2 are disposed on opposite sides, i.e., two sides, of the sun gear 34, as shown in fig. 2, the main motor 1 and the auxiliary motor 2 are disposed in parallel axes. At this time, the fourth gear 22 is directly connected to the second clutch 6 through the second transmission shaft 24, the length of the second transmission shaft 24 is smaller than that of the first transmission shaft 23, the main motor 1 and the auxiliary motor 1 can be respectively arranged at one end of the coaxial position, the overall arrangement space is saved, and the compactness is good.

Above-mentioned embodiment one and embodiment two provide two fender electric drive systems of electricelectric motor, can provide the control of shifting that starts under four operating modes, specifically include:

starting and normal urban conditions, the locking mechanism 8 fixes the gear ring 31, the main motor 1 drives, and power passes through the first gear 11, the second gear 12, the sun gear 34, the planet carrier 33, the fifth gear 51 and the sixth gear 52, finally reaches the differential 7, and is transmitted to the wheels. At this time, the sub-motor 2, the third gear 21, and the fourth gear 22 are in a stationary state.

In a normal urban acceleration condition, the locking mechanism 8 fixes the gear ring 31, the main motor 1 drives, and power passes through the first gear 11, the second gear 12, the sun gear 34, the planet carrier 33, the fifth gear 51 and the sixth gear 52, finally reaches the differential 7, and is transmitted to the wheels. Meanwhile, the sub-motor 2 is started, and power is transmitted to the fifth gear 51 through the third gear 21, the fourth gear 22, and the second clutch 6, finally collected to the differential 7, and transmitted to the wheels.

When the working speed is increased to a high-speed working condition, the auxiliary motor 2 continuously works, the locking mechanism 8 is separated, the first clutch 4 connects the gear ring 31 with the sun gear 34, the main motor 1 adopts high-speed power output, and the auxiliary motor 2 can stop working.

The high-speed overtaking working condition, the high-speed gear working condition of the main motor 1 and the direct starting of the auxiliary motor 2 have fast power response.

It can be seen that, the utility model discloses a locking mechanism 8 is fixed with the separation ring gear 31 two kinds of circumstances, realizes the switching control of low-speed gear and high-speed gear, and vice motor 2 cooperation main motor 1 realizes acceleration control, and vice motor 2 is direct with power transmission to second grade reduction gear 5 and differential mechanism 6 through second clutch 6, and dynamic response is fast, and is effectual with higher speed.

Example three: a vehicle comprises a pure electric double-motor two-gear electric driving system provided by the first embodiment or the second embodiment. According to the vehicle provided by the embodiment, the output end of the primary speed reduction gear set of the main motor is connected with the planetary gear set 3, the sun gear 34 or the second gear 12 can be fixedly combined with or separated from the gear ring 31 through the first clutch 4, gear change switching of a low gear and a high gear is realized, and the problem of power interruption in the prior art is solved; the power of the auxiliary motor 2 is connected into the second clutch 6 through the auxiliary motor primary speed reducing gear set and is transmitted to the secondary speed reducing gear set 5 and the differential mechanism 7, and the power is gathered with the output power of the main motor 1 and then is transmitted to wheels.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a two fender electricity of pure electric motor drive system which characterized in that includes:

the output shaft of the main motor (1) is provided with a main motor primary reduction gear set,

the output shaft of the auxiliary motor (2) is provided with an auxiliary motor primary reduction gear set;

the planetary gear set (3) comprises a gear ring (31), a planetary gear (32), a planet carrier (33) and a sun gear (34), the gear ring (31) and the sun gear (34) are connected through a first clutch (4), the sun gear (34) is connected with the output end of the primary motor primary speed reduction gear set, and the planetary gear (32) is in meshing connection with the gear ring (31);

second grade reduction gear set (5), the input of second grade reduction gear set (5) with planet carrier (33) rigid connection, vice motor one-level reduction gear set's output passes through second clutch (6) and connects second grade reduction gear set (5), differential mechanism (7) are connected to the output of second grade reduction gear set (5).

2. A pure electric two-gear electric drive system according to claim 1, characterized in that the primary reduction gear set of the main motor comprises a first gear wheel (11) and a second gear wheel (12), the first gear wheel (11) being rigidly connected to the rotor shaft of the main motor (1), the second gear wheel (12) being in meshing transmission connection with the first gear wheel (11), and the second gear wheel (12) being rigidly connected to the sun wheel (34).

3. A pure electric two-gear electric drive system according to claim 2, characterized in that the secondary electric machine primary reduction gear set comprises a third gear (21) and a fourth gear (22), the third gear (21) is rigidly connected with the rotor shaft of the secondary electric machine (2), the fourth gear (22) is in meshed transmission connection with the third gear (21), and the fourth gear (22) is fixedly connected with the secondary reduction gear set (5) through the second clutch (6).

4. A pure electric two-gear electric drive system according to claim 3, wherein the two-stage reduction gear set (5) comprises a fifth gear (51) and a sixth gear (52), the fifth gear (51) is rigidly connected to the planet carrier (33), the sixth gear (52) is in meshed driving connection with the fifth gear (51), the sixth gear (52) is rigidly connected to the differential (7), and the fourth gear (22) is fixedly connected to the fifth gear (51) through the second clutch (6).

5. A pure electric two-gear electric drive system according to claim 4, characterized in that the second clutch (6) is arranged at the axle center of the fifth gear (51), the fourth gear (22) is connected with the second clutch (6) through a transmission shaft to be fixedly connected with the fifth gear (51), and the fourth gear (22) is coaxial with the fifth gear (51).

6. A pure electric two-gear electric drive system according to claim 1, characterized in that the second clutch (6) is a one-way clutch.

7. A pure electric two-gear electric drive system according to claim 1, further comprising a locking mechanism (8), wherein the locking mechanism (8) is configured to fix or separate the gear ring (31).

8. A pure electric double-motor two-gear electric drive system according to claim 1, characterized in that the main electric motor (1) and the auxiliary electric motor (2) are arranged on the same side or on opposite sides of the sun gear (34).

9. A pure electric double-motor two-gear electric drive system as claimed in claim 8, characterized in that the main motor (1) and the auxiliary motor (2) are arranged in parallel axes.

10. A vehicle comprising a pure electric two-gear electric drive system according to any of claims 1-9.