A new energy automobile motor mounting structure
By combining the sickle-shaped motor bracket with the U-shaped electric bridge bracket, the problem of radial offset of the motor in the electric drive axle structure is solved, achieving coaxiality between the motor and the electric drive axle and reducing NVH noise, thus improving the riding experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LICHI NEW ENERGY AUTOMOBILE CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
In the electric drive axle structure, the L-shaped bracket can easily cause radial displacement of the motor tail end, affecting the coaxiality of the motor and the rear axle, generating NVH noise, and reducing the riding experience.
The sickle-shaped motor bracket is connected to the rear end of the motor, combined with a U-shaped electric bridge bracket and bolt connection, to ensure that the radial force is converted into axial force when the motor rotates, thereby enhancing the support strength and reducing deflection.
It effectively suppresses radial offset of the motor, ensures coaxiality between the motor and the electric drive axle, reduces NVH noise, and improves ride comfort.
Smart Images
Figure CN224375314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a motor mounting structure for new energy vehicles. Background Technology
[0002] New energy vehicles are currently the most popular means of family transportation. They differ significantly from gasoline vehicles. Gasoline vehicles have larger engines that require more space, so they are located in the engine compartment at the front or rear of the vehicle. Electric motors, on the other hand, are relatively smaller than engines and are often installed at the bottom of the vehicle frame using an electric motor drive axle structure. This not only saves space but also reduces costs.
[0003] The electric drive axle structure is installed by directly connecting the front cover of the motor to the end cover of the electric drive axle, while the rear cover of the motor is connected to the electric drive axle by a bracket to support the weight of the motor. The bracket is mostly L-shaped, but the L-shaped bracket is prone to radial displacement of the motor tail end, which will affect the coaxiality of the motor and the rear axle, resulting in NVH noise and affecting the riding experience of passengers. Utility Model Content
[0004] The purpose of this utility model is to provide a new energy vehicle motor mounting structure to solve the problems mentioned in the background art.
[0005] A new energy vehicle motor mounting structure is characterized by comprising an electric drive bridge, a front connecting cover fixedly connected to one side of the electric drive bridge, a motor 3 fixedly connected to the front connecting cover, the motor 3 being arranged parallel to the electric drive bridge, and the axes of the motor 3 and the electric drive bridge being parallel to each other. It also includes an electric drive bridge bracket fixedly connected to the side of the electric drive bridge, the electric drive bridge bracket being arranged radially along the electric drive bridge. A motor bracket is fixedly connected to a connecting plate, the motor bracket being parallel to the electric drive bridge bracket. The first end of the motor bracket is a fixed end, and the second end is a connecting end. The fixed end is fixedly connected to the electric drive bridge bracket, and the connecting end is fixedly connected to the rear end face of the motor 3. The motor 3 and the electric drive bridge bracket are located on the same side of the motor bracket, and the axes of the motor 3 and the electric drive bridge together define a connecting surface. The electric drive bridge bracket and the connecting end are located on opposite sides of the connecting surface.
[0006] Preferably, the motor bracket and the electric bridge bracket are fixedly connected by a plurality of first fixing bolts, the plurality of first fixing bolts are arranged linearly, and the axis of the plurality of first fixing bolts is in the same plane as the axis of the electric drive bridge.
[0007] Preferably, the motor bracket and the motor are fixedly connected by a plurality of second fixing bolts, which are arranged circumferentially.
[0008] Preferably, the motor bracket has a reinforcing folded edge along its edge, with the reinforcing folded edge facing away from the motor.
[0009] Preferably, the motor bracket is provided with reinforcing strips.
[0010] Preferably, the bridge support includes a connecting plate and two reinforcing plates, with the two reinforcing plates fixedly connected to both sides of the connecting plate, and the bridge support is U-shaped overall.
[0011] Compared with the prior art, the advantages of this invention are as follows: When the motor rotates, the tail end of the motor will swing radially. The traditional L-shaped bracket cannot suppress the radial offset of the motor. This invention uses a sickle-shaped motor bracket connected to the rear end face of the motor. The arc-shaped connection path is adapted to the running direction of the motor, which can provide sufficient support strength for the motor when it rotates. The other end of the motor bracket is connected to the electric drive bridge through the electric bridge bracket. The bolt connection direction is parallel to the axis of the motor and the electric drive bridge. Thus, the force direction of the rear end face of the motor changes from radial when using the L-shaped bracket to axial along the motor, thereby reducing the deflection of the motor relative to the electric drive bridge during operation, ensuring that the coaxiality is within the specified range, and thus reducing NVH.
[0012] The motor bracket has folded edges and curved reinforcing strips along the scissor-like shape to ensure the structural strength of the motor bracket and prevent breakage that could affect vehicle safety. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a front structural diagram of the present invention;
[0015] Figure 3 This is a schematic diagram of the overall structure of the bridge support in this utility model;
[0016] Figure 4 This is a schematic diagram of the overall structure of the motor bracket in this utility model.
[0017] In the diagram: 1. Electric drive bridge; 2. Front connecting cover; 3. Motor; 4. Electric bridge bracket; 41. Connecting plate; 42. Reinforcing plate; 5. Motor bracket; 51. Fixed end; 52. Connecting end; 53. Folded edge; 54. Reinforcing strip; 6. Second fixing bolt; 7. First fixing bolt. Detailed Implementation
[0018] The following will describe specific embodiments and appendices. Figure 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.
[0019] A new energy vehicle motor mounting structure includes an electric drive axle 1, a front connecting cover 2 fixedly connected to one side of the electric drive axle 1, the front connecting cover 2 being assembled and connected to the electric drive axle 1, and an electric motor 3 fixedly connected to one end of the front connecting cover 2. The output shaft of the electric motor 3 is encased in the front connecting cover 2 and is connected to the output shaft inside the electric drive axle 1 through a transmission structure. The front connecting cover 2 can protect the transmission device and prevent external flying sand and stones from affecting the operation of the transmission device.
[0020] The electric motor 3 and the electric drive bridge 1 are arranged in parallel, with their axes parallel to each other. This parallel arrangement ensures stable transmission and efficient transmission. The axes of the electric motor 3 and the electric drive bridge 1 together define a connection surface. An electric bridge bracket 4 is fixedly connected to one side of the connection surface. The electric bridge bracket 4 is fixedly connected to the side of the electric drive bridge 1. The electric bridge bracket 4 includes a connecting plate 41 and two reinforcing plates 42. The two reinforcing plates 42 are fixedly connected to both sides of the connecting plate 41. The electric bridge bracket 4 is arranged radially along the electric drive bridge 1. The electric bridge bracket 4 is U-shaped. The U-shaped structure has better structural strength and is less prone to deformation under stress, ensuring stable support. The connecting plate 41 and the two reinforcing plates 42 are simultaneously fixedly connected to the electric drive bridge 1 in the same direction to maintain the strength of the support connection.
[0021] A motor bracket 5 is fixedly connected to one side of the bridge bracket 4. The motor bracket 5 is located on the side of the connecting plate 41 away from the reinforcing plate 42. The motor bracket 5 is a plate-shaped structure, and its shape is approximately that of a sickle. The other end of the motor bracket 5 is fixedly connected to the rear end face of the motor 3. The edge of the motor bracket 5 is provided with a folded edge 53, which faces away from the motor 3 to facilitate the assembly and connection of the motor 3 and the motor bracket 5, so that the rear end face of the motor 5 can fit better against the motor bracket 5. The motor bracket 5 is also provided with a reinforcing strip 54, which is set along the shape of the motor bracket 5. The folded edge 53 and the reinforcing strip 54 can enhance the bending resistance of the plate-shaped motor bracket 5, enhance its structural strength, prevent it from deforming due to axial force perpendicular to the plate surface, and fully ensure the support strength of the motor.
[0022] The motor bracket 5 is arranged parallel to the connecting plate 41, thus increasing its contact area and allowing for more connection points, ensuring a more secure connection. This also alters the connection between the motor and the electric drive bridge, allowing the force on the connection between the motor and the motor bracket to be transmitted axially along the motor. The first end of the motor bracket 5 is a fixed end 51, and the second end is a connecting end 52. The fixed end 51 is rectangular, and the connecting end 52 is arc-shaped. The motor bracket 5 is generally sickle-shaped. The fixed end 51 is fixedly connected to the electric drive bridge bracket 4, and the connecting end 52 is fixedly connected to the rear end face of the motor 3. The arc-shaped connecting end 52 connects along the outer edge of the motor, and the arc shape of the connecting end 52 corresponds to the rotation direction of the motor 3. This allows the force on the rear end face of the motor 3 to be transmitted along the connecting end 52 to the fixed end 51, and then from the fixed end to the electric drive bridge bracket 4 and the electric drive bridge. When the drive bridge 1 and the motor bracket 5 are subjected to radial torsional force and axial force from the tail end of the motor 3, the direction of the radial torsional force coincides with the arc-shaped plate surface of the motor bracket 5. The plate has a strong resistance to deformation along the direction of the coinciding plate surface, but a weak resistance to deformation in the direction perpendicular to the plate surface. Therefore, the motor bracket 5 can largely offset the radial torsional force generated at the tail end when the motor 3 rotates, thereby ensuring the coaxiality of the motor 3 and the drive bridge 1, which can reduce NVH. The folded edge 53 and the reinforcing strip 54 can enhance the motor bracket 5's resistance to axial force.
[0023] The motor bracket 5 and the electric bridge bracket 4 are fixedly connected by two first fixing bolts 7. The two first fixing bolts 7 are arranged linearly and are in the same plane as the axis of the electric drive bridge 1. The motor bracket 5 and the motor 3 are fixedly connected by three second fixing bolts 6. The three second fixing bolts 6 are arranged equidistantly along the circumferential direction of the arc and the connection points are evenly distributed, which can make the connection strength between the motor bracket 5 and the motor 3 higher.
[0024] The motor 3 and the bridge bracket 4 are located on the same side of the motor bracket 5. The axes of the motor 3 and the electric drive bridge 1 together define a connection surface. The bridge bracket 4 and the connection end 52 are located on opposite sides of the connection surface. The sickle-shaped structure has its cutting edge facing the upper right. When viewed from the rear of the motor 3, when the motor 3 rotates counterclockwise, the tail end of the motor 3 will also tend to swing in a counterclockwise direction. The motor bracket 5 is fixedly connected to the tail end face of the motor 3 from the upper left and extends to the lower right in a counterclockwise direction, and is fixedly connected to the bridge bracket 4 at the lower right. The shape and mounting point of the motor bracket 5 allow the radial force generated by the rotation of the motor 3 to be transmitted along the plate surface, thereby being canceled out by the motor bracket 5. The connection point between the bridge bracket 4 and the electric drive bridge 1 is located on the right side of the connection surface, so that the angle between the radial force on the bridge bracket 4 and its fixed direction is less than 90 degrees, thereby reducing the force perpendicular to the installation direction on the bridge bracket 4, which is beneficial to the installation stability of the bridge bracket 4 and the electric drive bridge 1.
[0025] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.
[0026] In this utility model, "upper", "lower", "left", "right", "front" and "back" are relative positions used to facilitate the description of positional relationships, and therefore cannot be understood as absolute positions as a limitation on the scope of protection.
[0027] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. A motor mounting structure for a new energy vehicle, characterized in that, The device includes an electric drive bridge, a front connecting cover fixedly connected to one side of the electric drive bridge, a motor fixedly connected to the front connecting cover, the motor being arranged parallel to the electric drive bridge, and the axes of the motor and the electric drive bridge being parallel to each other. It also includes an electric drive bridge bracket fixedly connected to the side of the electric drive bridge, the electric drive bridge bracket being arranged radially along the electric drive bridge, and a motor bracket fixedly connected to the electric drive bridge bracket. The motor bracket is parallel to the electric drive bridge bracket, with a first fixed end and a second connecting end. The fixed end is fixedly connected to the electric drive bridge bracket, and the connecting end is fixedly connected to the rear end face of the motor. The motor and the electric drive bridge bracket are located on the same side of the motor bracket, and the axes of the motor and the electric drive bridge together define a connecting surface. The electric drive bridge bracket and the connecting end are located on opposite sides of the connecting surface.
2. The new energy vehicle motor mounting structure according to claim 1, characterized in that, The motor bracket and the electric bridge bracket are fixedly connected by a plurality of first fixing bolts, which are arranged linearly, and the axis of the plurality of first fixing bolts is in the same plane as the axis of the electric drive bridge.
3. The new energy vehicle motor mounting structure according to claim 1, characterized in that, The motor bracket and the motor are fixedly connected by a number of second fixing bolts, which are arranged circumferentially.
4. The new energy vehicle motor mounting structure according to claim 1, characterized in that, The motor bracket has a folded edge along its edge, with the folded edge facing away from the motor.
5. The new energy vehicle motor mounting structure according to claim 4, characterized in that, The motor bracket is equipped with reinforcing strips.
6. The new energy vehicle motor mounting structure according to claim 1, characterized in that, The bridge support includes a connecting plate and two reinforcing plates, with the two reinforcing plates fixedly connected to both sides of the connecting plate. The bridge support is U-shaped overall.