An electric drive structure integrated with a suspension

Abstract

The utility model discloses an integrated electric drive structure with suspension, relates to new energy electric drive system technical field, including the casing, the casing integrated with the installation site of motor, speed reducer and controller, the built -in differential mechanism of speed reducer, the casing still is provided with the suspension, is close to the output of differential mechanism setting, the suspension with the casing is formed with integral die casting process and is not detachable connection, first reinforcing rib is provided with several, first reinforcing rib connects suspension and motor casing respectively, is used for improving the dynamic stiffness of suspension, the utility model discloses an integrated suspension on the casing is provided with, has reduced the whole car installation envelope size, has reduced the spare part BOM quantity, has reduced the whole car cost, through setting up the reinforcing rib, has effectively improved the dynamic stiffness of suspension point, is helpful to the promotion whole car NVH.

Description

Technical Field

[0001] This utility model relates to the field of new energy electric drive system technology, specifically to an electric drive structure with integrated suspension. Background Technology

[0002] Traditional new energy electric drive systems often employ a split design for their mounting structures, meaning the mounting components are connected to the vehicle frame and the electric drive assembly separately via bolts. However, this design has the following drawbacks:

[0003] 1. Complex structure: It requires additional bolt connections, resulting in a large number of parts and complicated assembly steps.

[0004] 2. Insufficient performance: The split-type suspension has low dynamic stiffness, which can easily lead to resonance risk, and its NVH performance is difficult to meet the requirements of high-end models.

[0005] 3. Large space occupation: The split layout requires more installation space, which limits the lightweight and compact design of the whole vehicle.

[0006] Currently, although some solutions attempt to optimize the suspension structure, they are mostly limited to localized improvements, such as upgrading the suspension rubber bushing material, and fail to fundamentally solve the systemic defects of the split structure. Therefore, there is an urgent need for a highly integrated suspension structure that is highly integrated, has superior performance, and is cost-effective. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model provides an integrated suspended electric drive structure, including a housing. The housing integrates mounting positions for a motor, a reducer, and a controller. The reducer has a built-in differential. The housing also includes:

[0008] The mounting bracket is located near the output end of the differential, and the mounting bracket and the housing are integrally die-cast to form a non-detachable connection.

[0009] The first reinforcing rib is provided in several parts, and the first reinforcing rib is respectively connected to the suspension and the motor housing to improve the dynamic stiffness of the suspension.

[0010] Furthermore, a steel bushing is embedded at the connection interface between the suspension and the housing.

[0011] Furthermore, the connection surface between the suspension and the vehicle frame is provided with a shock-absorbing rubber layer, the thickness of which is 5-8mm.

[0012] Furthermore, the first reinforcing rib penetrates the reducer housing and connects the suspension and the motor housing.

[0013] Furthermore, the housing is also provided with a second reinforcing rib, the two ends of which are respectively connected to the suspension and the reducer housing.

[0014] Furthermore, the housing is also provided with a third reinforcing rib, the two ends of which are respectively connected to the reducer housing and the motor housing.

[0015] Furthermore, the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib are all made of ADC12.

[0016] Furthermore, the thickness of the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib ranges from 6 to 9 mm, and the height ranges from 18 to 22 mm.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention reduces the overall vehicle mounting envelope size and the number of parts in the BOM by providing an integrally formed suspension on the housing, thereby reducing the overall vehicle cost. By setting reinforcing ribs, the dynamic stiffness of the suspension point is effectively improved, which helps to improve the NVH of the entire vehicle. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the electric drive assembly disclosed in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the housing structure of the electric drive assembly disclosed in an embodiment of the present utility model, showing the positions of the suspension and reinforcing ribs.

[0021] In the diagram: 10, shell; 11, suspension; 12, first reinforcing rib; 13, second reinforcing rib; 14, third reinforcing rib. Detailed Implementation

[0022] To make the technical solutions and effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] This utility model aims to provide an integrated electric drive structure with a suspension mount, which integrates the entire vehicle suspension mount depth into the electric drive housing, reducing the process path, i.e. reducing the number of parts BOM, which is conducive to reducing the overall vehicle cost; and through the reinforcing rib structure, the dynamic stiffness of the suspension point is effectively improved, thereby improving the overall vehicle NVH.

[0024] Please see Figure 1-2 The integrated suspended electric drive structure mainly includes a housing 10, which integrates mounting positions for the motor, reducer, and controller. The reducer has a built-in differential. Since the motor, reducer, and controller are conventional designs in this field, they will not be described in detail here.

[0025] The housing 10 is also provided with a suspension 11 and a first reinforcing rib 12, a second reinforcing rib 13 and a third reinforcing rib 14, which will be described in detail below.

[0026] Those skilled in the art further explain that the core function of the mounting 11 is to securely fix the electric drive assembly to the vehicle frame. It needs to withstand the static loads (such as weight) and dynamic loads (such as acceleration, braking, and impact forces under bumpy road conditions) generated by the electric drive system during operation, ensuring the stability of the system under complex operating conditions.

[0027] In this embodiment, the suspension 11 is located near the output end of the differential. The suspension 11 and the housing 10 are connected in an integral die-casting process, which eliminates the traditional bolt connection and adopts the die-casting molding process, which helps to reduce assembly steps and testing links.

[0028] The integral molding of the suspension 11 and the housing 10 can reduce the overall vehicle mounting envelope size by 10%, reduce the process path, and thus reduce the number of parts BOMs, which helps to reduce the overall vehicle cost.

[0029] Preferably, a steel bushing is embedded at the connection interface between the suspension 11 and the housing 10 to enhance the load-bearing capacity.

[0030] Preferably, the connection surface between the suspension 11 and the vehicle frame is provided with a shock-absorbing rubber layer, the rubber layer has a Shore hardness of 70-80HA and a thickness of 5-8 mm.

[0031] Several first reinforcing ribs 12 are provided, and the first reinforcing ribs 12 are respectively connected to the suspension 11 and the motor housing to improve the dynamic stiffness of the suspension 11.

[0032] In this embodiment, the first reinforcing rib 12 penetrates the reducer housing and connects the suspension 11 and the motor housing. The two ends of the second reinforcing rib 13 are respectively connected to the suspension 11 and the reducer housing. The two ends of the third reinforcing rib 14 are respectively connected to the reducer housing and the motor housing.

[0033] Preferably, the first reinforcing rib 12, the second reinforcing rib 13, and the third reinforcing rib 14 are all made of ADC12. The thickness of the first reinforcing rib 12, the second reinforcing rib 13, and the third reinforcing rib 14 ranges from 6 to 9 mm, and the height ranges from 18 to 22 mm.

[0034] It should be noted that in this embodiment, the position of the suspension 11 on the housing 10 is not fixed; the specific position and installation angle of the suspension 11 are based on product requirements. This embodiment emphasizes that the suspension 11 and the housing 10 are integrally cast to form a rigid connection, avoiding the risk of interface loosening caused by a split structure.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated electric drive structure with a suspension mount, characterized in that, The housing (10) includes a housing that integrates mounting positions for a motor, a reducer, and a controller, wherein the reducer has a built-in differential; the housing (10) also includes: The suspension (11) is located near the output end of the differential, and the suspension (11) and the housing (10) are integrally die-cast to form a non-detachable connection; The first reinforcing rib (12) is provided in several places. The first reinforcing rib (12) is connected to the suspension (11) and the motor housing respectively, and is used to improve the dynamic stiffness of the suspension (11).

2. The integrated suspended electric drive structure according to claim 1, characterized in that, A steel bushing is embedded at the connection interface between the suspension (11) and the housing (10).

3. The integrated suspended electric drive structure according to claim 1, characterized in that, The connection surface between the suspension (11) and the vehicle frame is provided with a shock-absorbing rubber layer, the thickness of which is 5-8 mm.

4. The integrated suspended electric drive structure according to claim 1, characterized in that, The first reinforcing rib (12) passes through the reducer housing and connects the suspension (11) and the motor housing.

5. The integrated suspended electric drive structure according to claim 4, characterized in that, The housing (10) is also provided with a second reinforcing rib (13), the two ends of which are connected to the suspension (11) and the reducer housing, respectively.

6. The integrated suspended electric drive structure according to claim 5, characterized in that, The housing (10) is also provided with a third reinforcing rib (14), the two ends of which are connected to the reducer housing and the motor housing, respectively.

7. The integrated suspended electric drive structure according to claim 6, characterized in that, The first reinforcing rib (12), the second reinforcing rib (13) and the third reinforcing rib (14) are all made of ADC12.

8. The integrated suspended electric drive structure according to claim 6, characterized in that, The thickness of the first reinforcing rib (12), the second reinforcing rib (13) and the third reinforcing rib (14) ranges from 6 to 9 mm and the height ranges from 18 to 22 mm.

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