CN214928916U

CN214928916U - Motor drive structure and car

Info

Publication number: CN214928916U
Application number: CN202121067201.5U
Authority: CN
Inventors: 苏正杲; 刘钊; 白伟; 蒋荣勋; 代康伟
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-30
Anticipated expiration: 2031-05-18

Abstract

The utility model provides a motor drive structure and car relates to car technical field. This motor drive structure includes: the device comprises a first motor, a second motor, a differential and a clutch; the first motor is connected with the differential mechanism through a transmission structure; the second motor is connected with the first motor through the clutch and the transmission structure. Through setting up two motors for the vehicle has multiple power mode, thereby can provide different power mode according to the needs of traveling of vehicle, has improved the dynamic nature and the economic nature of vehicle.

Description

Motor drive structure and car

Technical Field

The utility model relates to the technical field of automobiles, in particular to motor drive structure and car.

Background

The power assembly form of the present electric automobile is mainly the combination of a single motor and a single-stage speed reducer, and the structure of the assembly has the advantages of low cost, good matching performance and the like, but along with the development of an electric drive technology and the higher and higher requirements of users on the performance of the automobile, the automobile adopting the single-stage fixed speed ratio speed reducer can reduce the torque of the motor when being at a high speed, simultaneously, the speed ratio is not variable, so that the dynamic performance of the automobile can be reduced, and if a motor with higher performance is adopted, the economical reduction under the daily running working condition of the automobile can be caused. Therefore, it is difficult to satisfy both the power performance and the economical efficiency in the form of the power train. Meanwhile, a power assembly with the motor and the reducer rigidly connected is easy to be subjected to reverse impact force when the vehicle runs on a bad road, and the risk of structural part damage and failure exists.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a motor drive structure and car for solve the problem that how to improve the dynamic nature of vehicle.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a motor drive structure comprising:

the device comprises a first motor, a second motor, a differential and a clutch;

the first motor is connected with the differential mechanism through a transmission structure;

the second motor is connected with the first motor through the clutch and the transmission structure.

Further, the transmission structure includes: a first gear, a second gear, a third gear, a fourth gear and an intermediate shaft;

wherein the third gear and the second gear are located on the intermediate shaft;

the first gear and the first motor are coaxially arranged, and the first gear and the second gear are meshed with each other;

the fourth gear is coaxially arranged with one of the output ends of the differential, and the fourth gear is meshed with the third gear.

Further, the first gear and the second gear are in external engagement.

Further, the third gear and the fourth gear are externally engaged.

Further, the clutch is a normally open clutch.

Further, when the clutch is in the disengaged state, only the first motor outputs torque to the differential;

the first and second electric machines simultaneously output torque to the differential while the clutch is in an engaged state.

Further, still include:

a controller for controlling a state of the clutch.

Further, the power of the first motor is greater than the power of the second motor.

Further, the controller is a vehicle control unit.

The embodiment of the utility model provides a still provide an automobile, including foretell motor drive structure.

The utility model has the advantages that:

according to the scheme, the two motors are arranged, so that the vehicle has multiple power modes, different power modes can be provided according to the running requirement of the vehicle, and the power performance and the economical efficiency of the vehicle are improved.

Drawings

Fig. 1 shows a schematic structural diagram of a motor driving structure according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses to the problem of the dynamic nature of improvement vehicle, provide a motor drive structure and car.

As shown in fig. 1, an embodiment of the present invention provides a motor driving structure, including:

a first electric machine M1, a second electric machine M2, a differential DM and a clutch C1;

wherein the first motor M1 is connected with the differential DM through a transmission structure;

the second electric machine M2 is connected with the first electric machine M1 through the clutch C1 and the transmission structure.

The embodiment of the utility model provides a through setting up two motors for the vehicle has multiple power mode, thereby can provide different power modes according to the demand of traveling of vehicle, improves the dynamic property and the economic nature of vehicle.

The transmission structure and the differential DM are speed reducer structures of a power automobile, the first motor M1 and the second motor M2 are power sources of the electric automobile, and the clutch C1 is used for switching the power mode, that is, controlling whether the second motor M2 is connected or not. The embodiment of the utility model provides a include two kinds of power modes, wherein, under the first power mode, first motor M1 is the power supply, and under the second power mode, first motor M1 and second motor M2 are the power supply simultaneously.

Specifically, the transmission structure includes: a first gear Z1, a second gear Z2, a third gear Z3, a fourth gear Z4 and an intermediate shaft;

wherein the third gear Z3 and the second gear Z2 are located on the countershaft;

the first gear Z1 is coaxially arranged with the first motor M1, and the first gear Z1 is meshed with the second gear Z2;

the fourth gear Z4 is coaxially disposed with one of the output ends of the differential DM, and the fourth gear Z4 intermeshes with the third gear Z3.

It should be noted that the first gear Z1 and the second gear Z2 form a first gear set; the third gear Z3 and the fourth gear Z4 constitute a second gear set. Wherein the second gear Z2 of the first fixed axis gear set and the third gear Z3 of the second fixed axis gear set are connected through the intermediate shaft.

Specifically, the first gear Z1 is in external mesh with the second gear Z2, and the third gear Z3 is in external mesh with the fourth gear Z4.

It should be further noted that, through the transmission structure, the motor outputs torque to the speed reducer, wherein the motor is the first motor M1 or a dual motor, and the dual motor is composed of the first motor M1 and the second motor M2.

Specifically, when the clutch C1 is in the open state, only the first electric machine M1 outputs torque to the differential DM;

when the clutch C1 is in the engaged state, the first electric machine M1 and the second electric machine M2 simultaneously output torque to the differential DM.

It should be noted that, under normal conditions, that is, when the first electric machine M1 can meet the power demand of the vehicle, the clutch C1 is in the off state, the power source of the vehicle is the first electric machine M1, and at this time, the torque output by the first electric machine M1 is transmitted to the wheel through the speed reducer DM to drive the vehicle to run; when the vehicle is in an uphill slope, a rapid acceleration and other power demands requiring high torque, the clutch C1 is in an engaged state, the power sources of the vehicle are the first motor M1 and the second motor M2, and the torque output by the first motor M1 and the torque output by the second motor M2 at the same time are transmitted to the wheel side through the speed reducer DM so as to provide sufficient power for the vehicle. That is, only in the case of requiring high torque, the second electric machine M2 and the first electric machine M1 are used together as a power source to drive the vehicle, so that the clutch C1 is a normally open clutch, thereby avoiding wear of the clutch and prolonging the service life of the clutch C1. Meanwhile, the clutch can effectively buffer the impact of a broken path on the power assembly structure and reduce the risk of damage and failure of the power assembly structure in consideration of the output characteristic of the electric automobile.

Specifically, the motor drive structure further includes:

a controller for controlling the state of the clutch C1. Alternatively, the controller may be a vehicle control unit.

Specifically, the first motor M1 is a main driving motor, the second motor is an auxiliary driving motor, and when the vehicle runs under normal road conditions, the power output by the main driving motor can meet the running requirement of the vehicle. Preferably, the first motor M1 can be matched and selected with proper power and torque parameter requirements according to the economic requirements of the whole vehicle development, and the second motor M2 can be matched and selected according to the dynamic requirements of the whole vehicle and the performance parameters of the main driving motor. Optionally, the power of the first electric machine M1 is greater than the power of the second electric machine M2.

It should be noted that, the double-motor structure is adopted, and due to the cooperation of the auxiliary motors, the main motor can be selected according to the economic requirement of the whole vehicle, so that the main motor does not need large reserve capacity, and the energy consumption of the whole vehicle can be effectively reduced.

The automobile provided with the motor driving mechanism is provided with two motors, so that the automobile has multiple power modes, different power modes can be provided according to the running requirements of the automobile, and the power performance and the economical efficiency of the automobile are improved.

The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Claims

1. A motor drive structure characterized by comprising:

a first electric machine (M1), a second electric machine (M2), a Differential (DM), and a clutch (C1);

wherein the first electric machine (M1) is connected with the Differential (DM) through a transmission structure;

the second electric machine (M2) is connected to the first electric machine (M1) via the clutch (C1) and the transmission arrangement.

2. The motor drive structure according to claim 1, wherein the transmission structure comprises: a first gear (Z1), a second gear (Z2), a third gear (Z3), a fourth gear (Z4) and an intermediate shaft;

wherein the third gear (Z3) and the second gear (Z2) are located on the intermediate shaft;

the first gear (Z1) is arranged coaxially with the first motor (M1), the first gear (Z1) is meshed with the second gear (Z2);

the fourth gear (Z4) is arranged coaxially with one of the output ends of the Differential (DM), and the fourth gear (Z4) is meshed with the third gear (Z3).

3. The motor drive structure according to claim 2,

the first gear (Z1) and the second gear (Z2) are in external engagement.

4. The motor drive structure according to claim 2,

the third gear (Z3) and the fourth gear (Z4) are in external engagement.

5. The motor drive structure according to claim 1,

the clutch (C1) is a normally open clutch.

6. The motor drive structure according to claim 1,

when the clutch (C1) is in the open state, only the first electric machine (M1) outputs torque to the Differential (DM);

the first electric machine (M1) and the second electric machine (M2) simultaneously output torque to the Differential (DM) when the clutch (C1) is in an engaged state.

7. The motor drive structure according to claim 4, further comprising:

a controller for controlling a state of the clutch (C1).

8. The motor drive structure according to claim 1,

the power of the first motor (M1) is greater than the power of the second motor (M2).

9. The motor drive structure according to claim 7,

the controller is a vehicle control unit.

10. An automobile characterized by comprising the motor drive structure according to any one of claims 1 to 9.