CN209441169U - Power assembly of electric automobile suspending apparatus and electric car - Google Patents

Abstract

The utility model relates to an electric vehicle power assembly suspension device and an electric vehicle, which belong to the field of electric vehicles. The device includes a bracket, a front suspension bracket of a reduction box and a motor suspension bracket. The joints of the box front suspension bracket and the joint of the right suspension bracket of the bracket and the motor suspension bracket are respectively provided with elastic parts for sound insulation and vibration reduction. The structure is simple, and the cushioning effect of the elastic parts improves the powertrain Vibration isolation and noise reduction performance and the stability of powertrain operation; electric vehicles include the car body, powertrain and the above-mentioned powertrain suspension device, with a simple structure, reducing the transmission of noise to the cabin and transmission of vibration to the powertrain , thereby improving the ride comfort of the vehicle and the lightweight of the electric vehicle.

Description

Electric vehicle powertrain mounts and electric vehicles

technical field

The utility model belongs to the technical field of electric vehicles, in particular to an electric vehicle power assembly suspension device and the electric vehicle.

Background technique

With the increasing shortage of energy sources and people's increasing emphasis on environmental protection, it is a trend for electric vehicles to replace traditional internal combustion engine vehicles. The powertrain is an important part of electric vehicles, and the powertrain mainly includes motors, reducers, motor controllers, etc. used to drive electric vehicles. Compared with the motors used in traditional industries, the driving motors of electric vehicles have a wider range of speed and torque. However, the driving motor generates severe noise in a specific working area, especially in the high-load and high-speed area; the noise is transmitted to the cabin by installing the powertrain on the electric vehicle and the frame to reduce the noise. The ride comfort of electric vehicles. When an electric vehicle encounters an uneven road surface during driving, the body will vibrate, and the vibration of the body will be transmitted to the powertrain, which will reduce the stability of the powertrain operation and increase the hidden danger of vehicle failure.

The Chinese utility model patent with the authorized notification number CN207015142U discloses "a suspension layout structure for electric vehicles". The suspension bracket and the motor suspension bracket, and the suspension arrangement structure are fixed on the vehicle frame through the left suspension cushion assembly and the right suspension cushion assembly at both ends. Although the suspension cushion assembly plays a role in vibration isolation and noise reduction for the powertrain, its complex structure and heavy weight are not conducive to the assembly of electric vehicles and the lightweight of vehicles.

Utility model content

The utility model provides a simple-structure electric vehicle power assembly suspension device, which is used to improve the vibration isolation and noise reduction performance of the power assembly and the stability of the power assembly operation; the utility model also provides an electric vehicle, which is used for It is used to improve the ride comfort and reduce the weight of electric vehicles. In order to achieve the above object, the utility model adopts the following technical solutions:

The electric vehicle powertrain suspension device includes a bracket, and the bracket includes beams at both ends for fixing on the frame of the electric vehicle, and a left suspension fixing bracket and a right suspension bracket for hoisting the powertrain are arranged between the beams. fixed bracket, the powertrain suspension device also includes the front suspension bracket of the reduction box connected with the left suspension fixed bracket for connecting with the power assembly and connected with the right suspension fixed bracket for For the motor suspension bracket connected to the powertrain, there are noise-reducing vibrating elastic.

Beneficial effects of the utility model: Elastic parts for sound insulation and vibration reduction are respectively arranged at the joints of the left suspension fixed bracket and the front suspension bracket of the reduction box and the joints of the right suspension fixed bracket and the motor suspension bracket, reducing The noise generated by the powertrain is transmitted to the cabin to improve the comfort of passengers; the transmission of body vibration to the powertrain is blocked to improve the stability of the powertrain; the electric vehicle powertrain suspension device has a simple structure and has Conducive to vehicle weight reduction.

As an improvement of the electric vehicle powertrain suspension device described in the utility model, the front suspension bracket of the reduction box is a triangular bracket, and a connecting sleeve for connecting with the left suspension fixed bracket is provided on the top of the triangular bracket , a connection hole for detachable connection with the power assembly is provided at the bottom of the triangular bracket.

Beneficial effects: the front suspension bracket of the reduction box is designed as a triangular bracket, which has the advantages of simple structure and stable performance, effectively reduces the weight of the front suspension bracket of the reduction box, and is beneficial to the weight reduction of the vehicle.

As a further improvement of the electric vehicle powertrain suspension device described in the utility model, the elastic member used for sound insulation and vibration reduction at the connection between the left suspension fixed bracket and the front suspension bracket of the gearbox is arranged in the connecting sleeve left elastic sleeve.

Beneficial effects: the elastic part is a left elastic sleeve, which has good sound insulation and vibration reduction effect and is easy to install.

As a further improvement of the electric vehicle powertrain suspension device of the utility model, the left suspension fixed bracket includes a top plate and left and right vertical plates bent downward on the left and right sides of the top plate. A connecting through hole for connecting with the front suspension bracket of the reduction box is arranged on the plate.

Beneficial effects: the left suspension fixing bracket is formed by bending a plate, which is simple in structure and easy to manufacture, and there are connecting through holes on the two vertical plates for connecting with the front suspension bracket of the reduction box, which is beneficial to the power assembly installation.

As a further improvement of the electric vehicle powertrain suspension device described in the utility model, the motor suspension bracket is a triangular hanger, the triangular hanger is connected with the right suspension fixed bracket by bolts, and the elastic member is a triangular The right elastic sleeve in the bolt hole on the hanger for bolt connection with the right suspension fixing bracket.

Beneficial effects: the motor suspension bracket is designed as a triangular hanger, which has a simple structure and is easy to manufacture, effectively reduces the weight of the motor suspension bracket, and is beneficial to the weight reduction of the vehicle.

As a further improvement of the electric vehicle powertrain suspension device described in the utility model, the right suspension fixed bracket includes an upwardly protruding cover plate, and the left and right sides of the cover plate are bent downward to form a left side plate and a The right side plate, and bolt holes for connecting with the motor suspension bracket are opened at the corresponding positions of the left and right side plates, and the front and rear sides of the cover plate are bent downwards to form a Fixedly connected front and rear side panels.

Beneficial effects: the installation height of the power assembly is increased by designing the right suspension fixing bracket into a raised structure, and the installation of the power assembly remains horizontal.

An electric vehicle includes a vehicle body, a power assembly, and a power assembly suspension device for suspending the power assembly. The power assembly suspension device includes a bracket, and the bracket includes two ends for fixing on the electric vehicle. The beam on the frame is provided with a left suspension fixed bracket and a right suspension fixed bracket used for hoisting the power assembly between the beams, and the power assembly suspension device also includes a The front suspension bracket of the reduction box connected with the powertrain and the motor suspension bracket connected with the right suspension fixing bracket for connection with the powertrain, and the front suspension bracket of the left suspension fixing bracket and the reduction box Elastic parts for sound insulation and vibration reduction are respectively provided at the connection of the mounting bracket and the connection of the right suspension fixing bracket and the motor suspension bracket. Rigid connection.

Beneficial effects of the utility model: Elastic parts for sound insulation and vibration reduction are respectively arranged at the joints of the left suspension fixed bracket and the front suspension bracket of the reduction box and the joints of the right suspension fixed bracket and the motor suspension bracket, reducing The noise generated by the powertrain is transmitted to the cabin to improve the comfort of passengers; the transmission of body vibration to the powertrain is blocked to improve the operation stability of the powertrain; the structure is simple, which is conducive to vehicle weight reduction.

As an improvement of the electric vehicle described in the present invention, the front suspension bracket of the reduction box is a triangular bracket, and a connecting sleeve for connecting with the left suspension fixed bracket is provided on the top of the triangular bracket. The bottom is provided with connection holes for detachable connection with the powertrain.

Beneficial effects: the front suspension bracket of the gearbox is designed as a triangular bracket, which has simple structure and stable performance, effectively reduces the weight of the front suspension bracket of the gearbox, and is beneficial to the light weight of the electric vehicle.

As a further improvement of the electric vehicle described in the present utility model, the elastic member used for sound insulation and vibration reduction provided at the joint between the left suspension fixing bracket and the front suspension bracket of the reduction box is the left elastic sleeve arranged in the connecting sleeve.

Beneficial effects: the elastic part is a left elastic sleeve, which has good sound insulation and vibration reduction effect and is easy to install.

As a further improvement of the electric vehicle described in the present utility model, the left suspension fixed bracket includes a top plate and left and right vertical plates bent downward on the left and right sides of the top plate, and the two vertical plates are provided with The connection through hole for the connection of the front suspension bracket of the reduction box.

Beneficial effects: the left suspension fixing bracket is formed by bending a plate, which is simple in structure and easy to manufacture, and there are connecting through holes on the two vertical plates for connecting with the front suspension bracket of the reduction box, which is beneficial to the power assembly installation.

As a further improvement of the electric vehicle described in the present utility model, the motor suspension bracket is a triangular hanger, and the triangle hanger is connected with the right suspension fixed bracket by bolts, and the elastic member is used on the triangle hanger to connect with The right elastic sleeve in the bolt hole of the right suspension fixing bracket bolt connection.

Beneficial effects: the motor suspension bracket is designed as a triangular hanger, which has a simple structure and is easy to manufacture, effectively reduces the weight of the motor suspension bracket, and is beneficial to the weight reduction of the vehicle.

As a further improvement of the electric vehicle described in the present invention, the right suspension fixed bracket includes an upwardly protruding cover plate, the left and right sides of the cover plate are bent downward to form a left side plate and a right side plate, and Bolt holes for connecting with the motor suspension bracket are provided at the corresponding positions of the left and right side plates, and the front and rear sides of the cover plate are bent downwards to form a front side plate for fixed connection with the crossbeam and rear side panels.

Beneficial effects: the installation height of the power assembly is increased by designing the right suspension fixing bracket into a raised structure, and the installation of the power assembly remains horizontal.

Description of drawings

Fig. 1 is the structural schematic diagram of Embodiment 1 of the electric vehicle powertrain mounting device of the present utility model;

Fig. 2 is the working state diagram of Embodiment 1 of the electric vehicle powertrain mounting device of the present utility model;

3 is a top view of the bracket structure of Embodiment 1 of the electric vehicle powertrain suspension device of the present invention;

Fig. 4 is a schematic structural view of the front suspension bracket of the reduction box of Embodiment 1 of the electric vehicle powertrain suspension device of the utility model;

Fig. 5 is a schematic structural diagram of the motor suspension bracket of Embodiment 1 of the electric vehicle powertrain suspension device of the present invention;

In the figure: 1-bracket, 11-beam, 12-left connecting bracket, 13-right connecting bracket, 14-left suspension fixing bracket, 15-right suspension fixing bracket, 2-reduction gearbox front suspension bracket, 21- Left elastic sleeve, 3-motor suspension bracket, 31-right elastic sleeve, 4-power assembly, 41-reduction box, 42-motor, 43-motor controller, 5-rear suspension bracket of reduction box, 6-reduction Rear suspension fixing bracket.

Detailed ways

The specific structure of Embodiment 1 of the electric vehicle powertrain suspension device of the utility model is shown in Figure 1 and Figure 3. The electric vehicle powertrain suspension device includes a bracket 1, a front suspension bracket 2 of the reduction box and a motor suspension bracket 3. Bracket 1 comprises two parallel crossbeams 11, and the two ends of two crossbeams 11 are respectively welded and fixed on the left connecting bracket 12 and the right connecting bracket 13, be rigidly connected between the crossbeam 11 and the vehicle frame of car body, rigidly connect in this embodiment Specifically, the left connecting bracket 12 and the right connecting bracket 13 are respectively used to be fixed on the longitudinal beam of the electric vehicle by bolt connection. In other embodiments, the left connecting bracket 12 and the right connecting bracket 13 can also be welded on the longitudinal beam of the electric vehicle. superior. Between the two beams 11, a left suspension fixed bracket 14 and a right suspension fixed bracket 15 are arranged, and the left suspension fixed bracket 14 and the right suspension fixed bracket 15 are reasonably designed according to the size of the power assembly 4 in the direction along the cross beam 11. the separation distance. Elastic parts for sound insulation and vibration reduction are respectively arranged at the joints of the left suspension fixed bracket 14 and the front suspension bracket 2 of the reduction box and the joints of the right suspension fixed bracket 15 and the motor suspension bracket 3 .

The left suspension fixed bracket 14 includes a top plate, the front and rear ends of the top plate are welded on the two beams 11, the left and right sides of the top plate are bent downward to form the left and right vertical plates, and the corresponding positions of the left and right vertical plates are provided for connecting with the front suspension of the reduction box. The connecting through hole connected to the bracket 2; the front suspension bracket 2 of the gear box is a triangular bracket, and the structure of the front suspension bracket 2 of the gear box is as shown in Figure 4, and the top of the triangle bracket is provided with a fixed bracket 14 for fixing with the left suspension. The connection sleeve for connection is provided with a connection hole for detachable connection with the power assembly 4 at the bottom of the triangular bracket. The elastic part provided at the junction of the left suspension fixing bracket 14 and the front suspension bracket 2 of the gear box, the elastic part and the connecting sleeve are fixed by interference fit. In this embodiment, the elastic part is the left elastic sleeve 21, and the left suspension is fixed Bracket 14 and reduction box front suspension bracket 2 adopt bolt connection bolts to connect through the connecting through holes on the left and right vertical plates and the central hole of the connecting sleeve.

The right suspension fixed bracket 15 includes an upwardly protruding cover plate, which is bent downward to form a left side plate and a right side plate on the left and right sides of the cover plate, and is provided at the corresponding positions of the left and right side plates for suspension with the motor. The bolt holes connected to the bracket 3 are bent downwards on the front and rear sides of the cover plate to form the front side plate and rear side plate for welding and fixing with the beam 11; the motor suspension bracket 3 is a triangular hanger, and the motor suspension The structure of the bracket is shown in Figure 5. A corner bolt through hole for connecting with the right suspension fixed bracket 15 is provided near the top corner of the triangular hanger. The connection between the right suspension fixed bracket 15 and the motor suspension bracket 3 The elastic part provided, the elastic part is interference fit with the motor suspension bracket 3, the elastic part is provided with a right elastic sleeve 31 for sound insulation and vibration reduction in the through hole of the top angle bolt, and there is a right elastic sleeve 31 for sound insulation and vibration reduction in the triangle hanger near the bottom corner. The bottom angle bolt through hole connected with the power assembly 4.

The working state is shown in Figure 2, the powertrain 4 includes a reduction box 41, a motor 42 and a motor controller 43, practically connecting the left connecting bracket 12 and the right side of the left and right ends of the bracket 1 of the electric vehicle powertrain suspension device. The bracket 13 is fixed on the longitudinal beam of the electric vehicle through bolt connection. The front suspension bracket 2 of the reduction box is connected with the fixed hoop bolt of the reduction box 41 , and the motor suspension bracket 3 is connected with the fixed hoop bolt on the motor 42 . Adjust the installation angle of the power assembly 4, the threaded rod passes through the bolt hole on the rear suspension bracket 5 of the reduction box and is connected with the threaded hole on the motor 42, and the rear suspension bracket 5 of the reduction box is fixed by the rear suspension fixing bracket 6 of the reduction box On the vehicle frame of the electric vehicle, thereby effectively preventing the powertrain 4 from swinging.

The difference between Embodiment 2 and Embodiment 1 of the electric vehicle powertrain suspension device of the present utility model lies in that: at the junction of the left suspension fixed bracket and the front suspension bracket of the reduction box and the right suspension fixed bracket and the motor suspension The elastic parts used for sound insulation and vibration reduction respectively provided at the joints of the brackets are elastic washers.

The difference between Embodiment 3 and Embodiment 1 of the electric vehicle powertrain suspension device of the present utility model is that: under the precondition of meeting the use requirements, the shape of the suspension bracket in front of the reduction box can be U-shaped, V-shaped, etc. other shapes.

The difference between Embodiment 4 and Embodiment 1 of the electric vehicle powertrain mounting device of the present utility model is that: under the precondition of meeting the use requirements, the shape of the motor mounting bracket can be U-shaped, V-shaped or other shapes .

In the embodiment of the electric vehicle of the present invention, the electric vehicle comprises a vehicle body, a power assembly and a power assembly suspension device for suspending the power assembly, and the crossbeam of the power assembly suspension device of the electric vehicle and the vehicle body of the vehicle body frame rigid connection; the powertrain suspension device of the electric vehicle is the same as the above-mentioned embodiment of the powertrain suspension device, and will not be described here.

Claims (7)

1. Electric vehicle powertrain suspension device, including a bracket, said bracket includes beams at both ends for fixing on the frame of the electric vehicle, and a left suspension fixing bracket for hoisting the powertrain and The right suspension fixing bracket is characterized in that: the powertrain suspension device also includes a front suspension bracket of the gearbox connected to the left suspension fixing bracket for connecting with the powertrain and a front suspension bracket connected to the right suspension The motor suspension bracket connected with the fixed bracket is used to connect with the powertrain, at the connection between the left suspension fixed bracket and the front suspension bracket of the reduction box and the connection between the right suspension fixed bracket and the motor suspension bracket Elastic pieces for sound insulation and vibration reduction are respectively provided. 2. The electric vehicle powertrain suspension device according to claim 1, characterized in that: the front suspension bracket of the reduction box is a triangular bracket, and the top of the triangular bracket is provided for fixing with the left suspension. The connection sleeve for the bracket connection is provided with a connection hole for detachable connection with the power assembly at the bottom of the triangular bracket. 3. The electric vehicle powertrain suspension device according to claim 2, characterized in that: the elastic member for sound insulation and vibration reduction provided at the connection between the left suspension fixed bracket and the front suspension bracket of the gearbox Left elastic sleeve inside connecting sleeve. 4. The electric vehicle powertrain suspension device according to claim 2 or 3, characterized in that: the left suspension fixing bracket includes a top plate and left and right vertical plates bent downwards on the left and right sides of the top plate , connecting through holes for connecting with the front suspension bracket of the reduction box are arranged on the two vertical plates. 5. The electric vehicle powertrain suspension device according to claim 1, characterized in that: the motor suspension bracket is a triangular hanger, and the triangular hanger and the right suspension fixing bracket are connected by bolts, and the The elastic part is the right elastic sleeve in the bolt hole used to be connected with the bolt of the right suspension fixing bracket on the triangular hanger. 6. The electric vehicle powertrain suspension device according to claim 5, characterized in that: the right suspension fixing bracket includes an upwardly protruding cover plate, and the left and right sides of the cover plate are bent downward to form The left side plate and the right side plate, and bolt holes for connecting with the motor suspension bracket are opened at the corresponding positions of the left and right side plates, and the front and rear sides of the cover plate are bent downwards to form a A front side panel and a rear side panel fixedly connected with the beam. 7. An electric vehicle, comprising a vehicle body, a power assembly, and a power assembly suspension device for suspending the power assembly, characterized in that: the power assembly suspension device is any one of claims 1-6 The electric vehicle powertrain suspension device described in item 1, the beam of the electric vehicle powertrain suspension device is rigidly connected to the vehicle frame of the vehicle body.