Driving motor left support and suspension system

Abstract

The invention relates to a driving motor left support and a suspension system, and belongs to the technical field of electric automobile suspension systems, the driving motor left support comprises a mounting plate, the mounting plate comprises a top plate and a side plate, and the top plate and the side plate are mutually connected to form an L-shaped structure; the reinforcing ribs comprise a first longitudinal rib, a second longitudinal rib and a third longitudinal rib which are vertically and fixedly connected to the side plates, and the tops of the first longitudinal rib, the second longitudinal rib and the third longitudinal rib are vertically and fixedly connected with the top plate; the connecting plate is parallel to the side plate, and the first longitudinal bar, the second longitudinal bar and the third longitudinal bar are fixedly connected with the connecting plate. According to the structure technology principle that an L-shaped beam, a T-shaped beam and a U-shaped beam have good mechanical performance and the like, an ingenious structural body design is adopted, especially the design requirement of the U-shaped beam at the connecting position of the driving motor left support and the motor assembly is met, the modal of the driving motor left support is improved to be larger than 700 Hz from 500 Hz, the design requirement is met, and the design cost is reduced. The lightweight design is achieved, and the part cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle suspension systems, and in particular to a left bracket of a drive motor and a suspension system. Background Art

[0002] The suspension system of an electric vehicle has the functions of isolating vibration, supporting and positioning the drive motor, protecting the drive motor, and overcoming the reaction force generated by the motor torque output; this requires that the components of the suspension system must have sufficient stiffness, strength, mode and reliability.

[0003] The unbalanced order frequency of the motor rotation is between 100 and 600 Hz, so the suspension bracket is required to have a higher mode to avoid resonance; and avoid the first and second order modes of the electric drive assembly, and avoid the modes of other systems in the vehicle. Based on these characteristics, if the suspension system is not designed properly, the suspension bracket often breaks and other faults will affect the durability and reliability of the suspension system, and then affect the durability and reliability of the vehicle.

[0004] In order to avoid the breakage of the left bracket of the drive motor, the structural design of the left bracket of the motor drive motor generally adopts the method of adding reinforcing ribs or increasing the thickness of the sheet material, which makes the bracket design more complicated. Even so, the highest bracket mode can only reach 400 to 500 Hz; this results in high cost of the suspension bracket and high risk of damage due to the mode not meeting the design requirements. Summary of the invention

[0005] The embodiment of the present application provides a left bracket of a driving motor and a suspension system to solve the problem in the related art that the left bracket of the driving motor has a high risk of damage due to the modality failing to meet the design requirements.

[0006] In a first aspect, an embodiment of the present application provides a left bracket of a driving motor, comprising:

[0007] The mounting plate comprises a top plate and a side plate, wherein the top plate and the side plate are connected to each other to form an "L"-shaped structure, the top plate is provided with a first through hole group, and the side plate is provided with a second through hole group at one end away from the top plate;

[0008] The reinforcing ribs include a first longitudinal rib, a second longitudinal rib, and a third longitudinal rib, all of which are vertically fixedly connected to the side plates and whose tops are vertically fixedly connected to the top plate, and ends of the first longitudinal rib, the second longitudinal rib, and the third longitudinal rib away from the top plate all extend toward the second through hole group;

[0009] The connecting plate is parallel to the side plate, the first longitudinal rib, the second longitudinal rib and the third longitudinal rib are all fixedly connected to the connecting plate, and a third through hole group is arranged on the connecting plate, and the third through hole group is coaxial with the second through hole group.

[0010] On the first aspect, in some embodiments, the lower end of the second longitudinal rib is bent, extended and fixedly connected to the first longitudinal rib, a transverse rib fixed to the connecting plate is connected between the second longitudinal rib and the third longitudinal rib, and a sleeve connecting the second through hole group and the third through hole group is fixed between the side plate and the connecting plate.

[0011] In the first aspect, in some embodiments, the first through hole group includes a first hole, a second hole, and a third hole, the first hole is located between the first longitudinal rib and the second longitudinal rib, the third hole is located between the second longitudinal rib and the third longitudinal rib, and the second hole is located between the first hole and the third hole.

[0012] In the first aspect, in some embodiments, the side plate and the connecting plate are both provided with notches for adapting the motor, and the first through hole group includes a fourth hole and a fifth hole located between the first longitudinal rib and the notch, and a sixth hole located between the second longitudinal rib and the third longitudinal rib;

[0013] The third through hole group includes a seventh hole coaxial with the fourth hole, an eighth hole coaxial with the fifth hole, and a ninth hole coaxial with the sixth hole.

[0014] In the first aspect, in some embodiments, the longitudinal length of the first longitudinal rib is greater than the longitudinal lengths of the second and third longitudinal ribs, the fourth hole and the fifth hole are located below the second longitudinal rib, and a reinforcing ring coaxial with the third hole is fixed on the top plate.

[0015] In the first aspect, in some embodiments, the first longitudinal rib comprises a first upper plate, a first middle plate, and a first lower plate which are welded in sequence, the lateral width of the first upper plate is greater than the lateral width of the first lower plate, the first middle plate is inclined toward the second longitudinal rib and the cross-sectional area gradually decreases from top to bottom, and the connecting plate is welded to the first lower plate.

[0016] In the first aspect, in some embodiments, the second longitudinal rib comprises a second upper plate and a second lower plate connected by welding, the second lower plate is inclined toward the first longitudinal rib and connected by welding to the first longitudinal rib, and the connecting plate is connected by welding to the second lower plate.

[0017] On the first aspect, in some embodiments, the third longitudinal rib comprises a third upper plate, a third middle plate, and a third lower plate which are welded in sequence, the lateral width of the third upper plate is greater than the lateral width of the third lower plate, the third middle plate is inclined away from the second longitudinal rib and its cross-sectional area gradually decreases from top to bottom, and the connecting plate is welded to the third lower plate.

[0018] In the first aspect, in some embodiments, a first weight-reducing hole is provided between the first longitudinal rib and the second longitudinal rib, a second weight-reducing hole is provided between the second longitudinal rib and the third longitudinal rib, and the first weight-reducing hole and the second weight-reducing hole are both located above the connecting plate.

[0019] In a second aspect, an embodiment of the present application provides a suspension system, including:

[0020] A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly and a right longitudinal beam assembly which are spaced apart from each other, and a sub-frame assembly which is fixedly connected between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0021] A motor assembly, the motor assembly being located at the front side of the subframe assembly and between the left longitudinal beam assembly and the right longitudinal beam assembly;

[0022] A suspension unit, the suspension unit comprising a left bracket connected to the left longitudinal beam assembly and a right bracket connected to the right longitudinal beam assembly;

[0023] A left elastic bracket assembly connected to the left bracket, and a right elastic bracket assembly connected to the right bracket;

[0024] A left drive motor bracket as described in any one of the above items connected between the left elastic bracket assembly and the motor assembly, and a right drive motor bracket connected between the right elastic bracket assembly and the motor assembly;

[0025] A rear suspension bracket connected to the subframe assembly, and a rear suspension assembly connected between the rear suspension bracket and the motor assembly.

[0026] The beneficial effects of the technical solution provided by this application include:

[0027] The embodiment of the present application provides a left bracket of a driving motor, which cleverly utilizes the structural technical principle that "L"-shaped beams, "T"-shaped beams, and "U"-shaped beams have good mechanical properties, and combines the top plate and the side plate into an "L"-shaped beam, and the first longitudinal ribs are respectively combined with the top plate and the side plate into an "L"-shaped beam; the second longitudinal ribs are combined with the side plate into a "T"-shaped beam;

[0028] The third longitudinal reinforcement is combined with the top plate and the side plate to form an "L"-shaped beam, the connecting plate, the first longitudinal reinforcement and the side plate are combined to form a "U"-shaped beam, the connecting plate, the second longitudinal reinforcement and the side plate are combined to form a "U"-shaped beam, and the connecting plate, the third longitudinal reinforcement and the side plate are combined to form a "U"-shaped beam.

[0029] Therefore, the mode of the connection between the left bracket of the drive motor and the left elastic bracket assembly can be effectively improved, and the stress of the connection can be reduced at the same time, so as to achieve the overall structural stability of the left bracket of the drive motor, thereby achieving the purpose of improving the overall mode and reducing the stress requirements, meeting the design requirements, achieving lightweight design, and reducing parts costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic structural diagram of the left bracket of the driving motor according to an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the structure of the mounting plate of an embodiment of the present application;

[0033] Figure 3 This is a schematic diagram of the structure of the reinforcing ribs of an embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the structure of the sleeve according to an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the connection between the connecting plate and the reinforcing ribs according to an embodiment of the present application;

[0036] Figure 6 This is a schematic diagram of the structure of the connecting plate of an embodiment of the present application;

[0037] Figure 7 A cross-sectional schematic diagram of a first lower plate of an embodiment of the present application;

[0038] Figure 8 Schematic diagram of the structure of the suspension system of the embodiment of the present application.

[0039] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0040] 1. Motor assembly; 2. Left bracket; 3. Left elastic bracket assembly; 4. Drive motor left bracket; 5. Right bracket; 6. Right elastic bracket assembly; 7. Drive motor right bracket; 8. Rear suspension assembly; 9. Rear suspension bracket; 10. Left longitudinal beam assembly; 11. Right longitudinal beam assembly; 12. Subframe assembly;

[0041] 41. Mounting plate; 42. First longitudinal reinforcement; 43. Second longitudinal reinforcement; 44. Third longitudinal reinforcement; 45. Transverse reinforcement; 46. Casing; 47. Connecting plate; 48-1. First bolt; 48-2. Second bolt; 48-3. Third bolt;

[0042] 411, top plate; 4111, first hole; 4112, second hole; 4113, third hole; 4114, reinforcing ring plate; 412, side plate; 4121, first weight-reducing hole; 4122, second weight-reducing hole; 4123, fourth hole; 4124, fifth hole; 4125, sixth hole; 4126, notch;

[0043] 421. The first upper plate; 422. The first middle plate; 423. The first lower plate; 431. The second upper plate; 432. The second lower plate; 441. The third upper plate; 442. The third middle plate; 443. The third lower plate; 471. The seventh hole; 472. The eighth hole; 473. The ninth hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The embodiment of the present application provides a left bracket of a driving motor and a suspension system to solve the problem in the related art that the left bracket of the driving motor has a high risk of damage due to the modality failing to meet the design requirements.

[0046] See also Figures 1 to 7 As shown, the first aspect of the embodiment of the present application provides a left bracket of a driving motor, comprising:

[0047] The mounting plate 41 includes a top plate 411 and a side plate 412, the top plate 411 and the side plate 412 are connected to each other to form an "L"-shaped structure, the top plate 411 is provided with a first through hole group, and the side plate 412 is provided with a second through hole group at one end away from the top plate 411;

[0048] The reinforcing ribs include a first longitudinal rib 42, a second longitudinal rib 43, and a third longitudinal rib 44, which are all vertically fixedly connected to the side plate 412 and whose tops are vertically fixedly connected to the top plate 411, and ends of the first longitudinal rib 42, the second longitudinal rib 43, and the third longitudinal rib 44 away from the top plate 411 all extend toward the second through hole group;

[0049] The connecting plate 47 is parallel to the side plate 412. The first longitudinal rib 42, the second longitudinal rib 43 and the third longitudinal rib 44 are fixedly connected to the connecting plate 47. The connecting plate 47 is provided with a third through hole group, which is coaxial with the second through hole group.

[0050] The left bracket 4 of the driving motor designed in the embodiment of the present application cleverly utilizes the structural technical principle that "L"-shaped beams, "T"-shaped beams, and "U"-shaped beams have good mechanical properties, and combines the top plate 411 and the side plate 412 into an "L"-shaped beam, and the first longitudinal rib 42 is respectively combined with the top plate 411 and the side plate 412 into an "L"-shaped beam; the second longitudinal rib 43 is combined with the side plate 412 into a "T"-shaped beam;

[0051] The third longitudinal reinforcement 44 is respectively combined with the top plate 411 and the side plate 412 to form an "L"-shaped beam, the connecting plate 47 is combined with the first longitudinal reinforcement 42 and the side plate 412 to form a "U"-shaped beam, the connecting plate 47 is further combined with the second longitudinal reinforcement 43 and the side plate 412 to form a "U"-shaped beam, and the connecting plate 47 is further combined with the third longitudinal reinforcement 44 and the side plate 412 to form a "U"-shaped beam;

[0052] The above-mentioned combined structures of "L"-shaped beam, "T"-shaped beam, "U"-shaped beam, etc. can effectively improve the mode of the connection between the left bracket 4 of the driving motor and the left elastic bracket assembly 3, and reduce the stress of the connection part. The combined structure meets the structural stability of the upper part of the left bracket 4 of the driving motor, improves the overall mode and reduces the stress requirements, while achieving a lightweight design.

[0053] Specifically, the left drive motor bracket 4 includes a mounting plate 41, a first longitudinal rib 42, a second longitudinal rib 43, a third longitudinal rib 44, and a connecting plate 47, and is manufactured as a whole by a welding process. Among them, the top plate 411 uses the first through hole group thereon to install fasteners to connect to the left elastic bracket assembly 3, and the side plate 412 uses the second through hole group thereon to install fasteners to connect to the motor assembly 1.

[0054] The first longitudinal rib 42, the second longitudinal rib 43, and the third longitudinal rib 44, one end away from the top plate 411, all extend toward the second through hole group, so that the force borne by the first through hole group on the top plate can be directed to the vicinity of the second through hole group on the side plate 412, and combined with the above-mentioned "L"-shaped beam, "T"-shaped beam, "U"-shaped beam and other combined structures, the overall modal is effectively improved and the stress requirement is reduced, so that the mode of the left bracket 4 of the drive motor can be increased from less than 500Hz to greater than 700Hz, meeting the design requirements, achieving lightweight design, and reducing parts costs.

[0055] That is, the left bracket 4 of the driving motor designed in this application adopts sheet metal welded parts for the design of the suspension bracket while adapting to the technical characteristics of the electric vehicle suspension system, and the root of the suspension bracket adopts a reasonable structure, so that the mode of the bracket can reach above 700Hz, meeting the design requirements while being lightweight and reducing parts costs.

[0056] In some optional embodiments, see Figures 1 to 7As shown, an embodiment of the present application provides a left bracket of a driving motor, in which the lower end of the second longitudinal rib 43 of the left bracket 4 of the driving motor is bent and extended and fixedly connected to the first longitudinal rib 42, a transverse rib 45 fixed to a connecting plate 47 is connected between the second longitudinal rib 43 and the third longitudinal rib 44, and a sleeve 46 connecting the second through hole group and the third through hole group is fixed between the side plate 412 and the connecting plate 47.

[0057] The lower end of the second longitudinal rib 43 of the embodiment of the present application is bent and extended and welded to the first longitudinal rib 42, so that part of the force applied to the first longitudinal rib 42 is decomposed and transferred to the first longitudinal rib 42, thereby avoiding excessive force on the first longitudinal rib 42 and reducing the overall stress requirement of the bracket.

[0058] In addition, a transverse reinforcement 45 is vertically welded between the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44. The transverse reinforcement 45 is vertically welded to the side plate 412 and the connecting plate 47. The transverse reinforcement 45 is respectively combined with the side plate 412, the second longitudinal reinforcement 43, and the third longitudinal reinforcement 44 to form a "T"-shaped beam, which can improve the overall mode and reduce the stress in this part.

[0059] In addition, the sleeve 46 welded and fixed between the side plate 412 and the connecting plate 47 further improves the modal of the structure and reduces the stress of the corresponding parts, and meets the requirements of bearing the tightening torque of the fasteners; the structure of the "U"-shaped beam structure plus the sleeve 46 meets the connection part of the drive motor left bracket 4 and the motor assembly 1 ( Figure 2 The structural stability of the middle notch 4126 position is improved, the overall mode is improved and the stress requirements are reduced, while achieving a lightweight design.

[0060] Exemplarily, the left bracket 4 of the driving motor includes a mounting plate 41, a first longitudinal rib 42, a second longitudinal rib 43, a third longitudinal rib 44, a transverse rib 45, a sleeve 46, a connecting plate 47, and a first bolt 48-1, a second bolt 48-2, and a third bolt 48-3 for connecting the left elastic bracket assembly 3, and the whole is connected by welding; the mounting plate 41, the first longitudinal rib 42, the second longitudinal rib 43, the third longitudinal rib 44, the transverse rib 45, the sleeve 46, and the connecting plate 47 can all be formed by stamping, bending and other processes.

[0061] The mounting plate 41 is provided with a top plate 411 for connecting the left elastic bracket assembly 3 and a side plate 412 for connecting the motor assembly 1, and the angle between the two is a right angle. The top plate 411 is parallel to the horizontal plane XOY of the vehicle, and the side plate 412 is parallel to the longitudinal plane XOZ of the vehicle. Figure 1 The X-axis direction is the length (front and back) direction of the vehicle, the Y-axis direction is the width (left and right) direction of the vehicle, and the Z-axis direction is the height (up and down) direction of the vehicle.

[0062] In some optional embodiments, see Figures 1 to 7As shown, the embodiment of the present application provides a left bracket of a driving motor, wherein the first through hole group of the left bracket 4 of the driving motor includes a first hole 4111, a second hole 4112, and a third hole 4113, wherein the first hole 4111 is located between the first longitudinal rib 42 and the second longitudinal rib 43, the third hole 4113 is located between the second longitudinal rib 43 and the third longitudinal rib 44, and the second hole 4112 is located between the first hole 4111 and the third hole 4113;

[0063] The side plate 412 and the connecting plate 47 are both provided with a notch 4126 for adapting the motor, and the first through hole group includes a fourth hole 4123 and a fifth hole 4124 located between the first longitudinal rib 42 and the notch 4126, and a sixth hole 4125 located between the second longitudinal rib 43 and the third longitudinal rib 44;

[0064] The third through hole group includes a seventh hole 471 coaxial with the fourth hole 4123 , an eighth hole 472 coaxial with the fifth hole 4124 , and a ninth hole 473 coaxial with the sixth hole 4125 .

[0065] The first hole 4111, the second hole 4112 and the third hole 4113 of the embodiment of the present application are respectively installed with the first bolt 48-1, the second bolt 48-2 and the third bolt 48-3. The function of the first longitudinal rib 42 is to guide the force borne by the first bolt 48-1 to the vicinity of the fourth hole 4123 and the fifth hole 4124. The function of the second longitudinal rib 43 is to guide the force borne by the second bolt 48-2 to the vicinity of the fifth hole 4124. The function of the third longitudinal rib 44 is to guide the force borne by the third bolt 48-3 to the vicinity of the sixth hole 4125, so as to ensure that the overall mode of the bracket can meet the design requirements.

[0066] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein the longitudinal length of the first longitudinal rib 42 of the left bracket 4 of the driving motor is greater than the longitudinal lengths of the second longitudinal rib 43 and the third longitudinal rib 44, the fourth hole 4123 and the fifth hole 4124 are located below the second longitudinal rib 43, and a reinforcing ring 4114 coaxial with the third hole 4113 is fixed on the top plate 411.

[0067] The longitudinal length of the first longitudinal rib 42 in the embodiment of the present application is greater than the longitudinal lengths of the second longitudinal rib 43 and the third longitudinal rib 44, leaving space for setting the notch 4126 on the side panel 412. At the same time, since the third hole 4113 is located at the rear in the length direction of the vehicle body, the third hole 4113 is subjected to greater stress after the motor assembly 1 is installed. Therefore, welding a reinforcing ring plate 4114 at the third hole 4113 can effectively reduce the stress in this area.

[0068] Exemplarily, during installation, the first bolt 48 - 1 and the first bolt 48 - 2 pass through the first hole 4111 and the second hole 4112 respectively and are welded to the top plate 411 ; the third bolt 48 - 3 passes through the third hole 4113 and the inner hole of the reinforcement ring piece 4114 and is welded to the reinforcement ring piece 4114 .

[0069] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the first longitudinal rib 42 of the left bracket 4 of the driving motor includes a first upper plate 421, a first middle plate 422, and a first lower plate 423 which are welded in sequence, the lateral width of the first upper plate 421 is greater than the lateral width of the first lower plate 423, the first middle plate 422 is inclined toward the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom, and the connecting plate 47 is welded to the first lower plate 423.

[0070] The first longitudinal rib 42 of the embodiment of the present application is used to guide the force borne by the first bolt 48-1 to the vicinity of the fourth hole 4123 and the fifth hole 4124. The first longitudinal rib 42 is composed of a first upper plate 421, a first middle plate 422, and a first lower plate 423, and is fixed by welding. The first middle plate 422 is arranged obliquely, so that the first longitudinal rib 42 is in a zigzag extension structure, which can better disperse and bear external loads, thereby improving the strength and rigidity of the product.

[0071] Exemplarily, the present application sets the area size of each part of the first longitudinal rib 42 according to the results of the overall modal and strength CAE simulation analysis of the left bracket 4 of the driving motor, and the size of the stress distribution. The transverse width of the first upper plate 421 is greater than the transverse width of the first lower plate 423, and the first middle plate 422 is inclined toward the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom; and the first upper plate 421, the first middle plate 422, and the first lower plate 423 have the same thickness but unequal areas, and the relationship of the areas is: the first upper plate 421 is greater than the first middle plate 422 and greater than the first lower plate 423;

[0072] The first longitudinal reinforcement 42 is welded on one side of the mounting plate 41 and leaves a certain distance from the side of the mounting plate 41 for easy setting of the weld. The first longitudinal reinforcement 42 leaves a certain distance from the first weight-reducing hole 4121 for easy setting of the weld; that is, the first longitudinal reinforcement 42 is welded with double-sided welds to improve welding performance and reliability.

[0073] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the second longitudinal rib 43 of the left bracket 4 of the driving motor includes a second upper plate 431 and a second lower plate 432 welded together, the second lower plate 432 is inclined toward the first longitudinal rib 42 and is welded together with the first longitudinal rib 42, and the connecting plate 47 is welded together with the second lower plate 432.

[0074] The function of the second longitudinal rib 43 of the embodiment of the present application is to direct the force borne by the second bolt 48-2 to the vicinity of the fifth hole 4124. To prevent the fifth hole 4124 from being borne too much force, the second lower plate 432 is welded to the first longitudinal rib 42. The angle formed by the second upper plate 431 and the second lower plate 432 is approximately 110 degrees, which can decompose part of the force to the fourth hole 4123.

[0075] Specifically, the second longitudinal reinforcement 43 is welded in the middle of the mounting plate 41, and a certain distance is left from the first weight-reducing hole 4121 and the second weight-reducing hole 4122 to facilitate the setting of double-sided welds; the second longitudinal reinforcement 43 is perpendicular to the side plate 412, and the transverse width dimension is equal to the transverse width dimension of the first lower plate 423, which is convenient for welding and fixing the connecting plate 47, and at the same time meets the requirements of the overall modal and strength CAE simulation analysis of the left bracket 4 of the drive motor.

[0076] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, and the third longitudinal rib 44 of the left bracket 4 of the driving motor includes a third upper plate 441, a third middle plate 442, and a third lower plate 443 which are welded in sequence, the lateral width of the third upper plate 441 is greater than the lateral width of the third lower plate 443, the third middle plate 442 is inclined away from the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom, and the connecting plate 47 is welded to the third lower plate 443.

[0077] The third longitudinal rib 44 of the embodiment of the present application is used to guide the force borne by the third bolt 48-3 to the vicinity of the sixth hole 4125. The third longitudinal rib 44 is composed of a third upper plate 441, a third middle plate 442, and a third lower plate 443, and is fixed by welding. The third middle plate 442 is arranged obliquely, so that the third longitudinal rib 44 is in a zigzag extension structure, which can better disperse and bear external loads, thereby improving the strength and rigidity of the product.

[0078] Exemplarily, the present application sets the area size of each part of the third longitudinal rib 44 according to the results of the overall modal and strength CAE simulation analysis of the left bracket 4 of the driving motor, and the size of the stress distribution. The lateral width of the third upper plate 441 is greater than the lateral width of the third lower plate 443, and the third middle plate 442 is inclined away from the second longitudinal rib 43 and the cross-sectional area gradually decreases from top to bottom; and the third upper plate 441, the third middle plate 442, and the third lower plate 443 have the same thickness but unequal areas, and the relationship of the areas is: the third upper plate 441 is greater than the third middle plate 442 and greater than the third lower plate 443;

[0079] The third longitudinal reinforcement 44 is welded on the mounting plate 41 and is away from the first longitudinal reinforcement 42, and a certain distance is left from the side of the mounting plate 41 for the convenience of setting the weld. The third longitudinal reinforcement 44 and the second weight reduction hole 4122 leave a certain distance for the convenience of setting the weld; that is, the third longitudinal reinforcement 44 is welded with double-sided welds, which can improve the welding performance and reliability; the transverse reinforcement 45 is welded to the middle part of the mounting plate 41, and is welded and connected to the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44, and is perpendicular to the second longitudinal reinforcement 43 and the third longitudinal reinforcement 44, and the end of the transverse reinforcement 45 away from the side plate 412 is flush with the second longitudinal reinforcement 43, which is convenient for welding the connecting plate 47.

[0080] In some optional embodiments, see Figures 1 to 7 As shown, an embodiment of the present application provides a left bracket of a driving motor, wherein a first weight reducing hole 4121 is arranged between the first longitudinal rib 42 and the second longitudinal rib 43 of the left bracket 4 of the driving motor, and a second weight reducing hole 4122 is arranged between the second longitudinal rib 43 and the third longitudinal rib 44, and both the first weight reducing hole 4121 and the second weight reducing hole 4122 are located above the connecting plate 47.

[0081] The first weight-reducing hole 4121 of the embodiment of the present application is a polygonal hole, and the second weight-reducing hole 4122 is a quadrilateral hole. Both are based on the results of CAE simulation analysis of the overall modal and strength of the left bracket 4 of the drive motor. The area where the first weight-reducing hole 4121 and the second weight-reducing hole 4122 are located corresponds to the part that contributes less to the improvement of the overall modal and strength of the left bracket 4 of the drive motor, so removing the material of this part can achieve the effect of weight reduction.

[0082] See also Figure 8 As shown, the second aspect of the embodiment of the present application provides a suspension system, including:

[0083] A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly 10 and a right longitudinal beam assembly 11 which are spaced apart from each other, and a sub-frame assembly 12 which is fixedly connected between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0084] The motor assembly 1 is located at the front side of the subframe assembly 12 and between the left longitudinal beam assembly 10 and the right longitudinal beam assembly 11;

[0085] A suspension unit, the suspension unit includes a left bracket 2 connected to a left longitudinal beam assembly 10, and a right bracket 5 connected to a right longitudinal beam assembly 11;

[0086] A left elastic bracket assembly 3 connected to the left bracket 2, and a right elastic bracket assembly 6 connected to the right bracket 5;

[0087] A left drive motor bracket 4 of any of the above embodiments connected between the left elastic bracket assembly 3 and the motor assembly 1, and a right drive motor bracket 7 connected between the right drive motor elastic bracket assembly 6 and the motor assembly 1;

[0088] A rear suspension bracket 9 connected to the subframe assembly 12 , and a rear suspension assembly 8 connected between the rear suspension bracket 9 and the motor assembly 1 .

[0089] The suspension system of the embodiment of the present application is composed of a motor assembly 1, a left bracket 2, a left elastic bracket assembly 3, a left bracket of a driving motor 4, a right bracket 5, a right elastic bracket assembly 6, a right bracket of a driving motor 7, a rear suspension assembly 8, a rear suspension bracket 9, a left longitudinal beam assembly 10, a right longitudinal beam assembly 11, and a subframe assembly 12.

[0090] The left bracket 2 is installed on the left longitudinal beam assembly 10 by bolts; the left elastic bracket assembly 3 is installed on the left bracket 2 by bolts and nuts; the left drive motor bracket 4 is installed on the motor assembly 1 by bolts and connected to the left elastic bracket assembly 3.

[0091] The right bracket 5 is installed on the right longitudinal beam assembly 11 by bolts; the right elastic bracket assembly 6 is installed on the right bracket 5 by bolts and nuts; the right bracket 7 of the driving motor is installed on the motor assembly 1 by bolts and connected to the right elastic bracket assembly 6; the rear suspension assembly 8 is installed on the motor assembly 1 by bolts and connected to the rear suspension bracket 9.

[0092] The left drive motor bracket 4, the right drive motor bracket 7, and the rear suspension assembly 8 jointly support the motor assembly 1; the left bracket 2, the right bracket 5, and the rear suspension bracket 9 jointly connect the motor assembly 1 to the vehicle body and the subframe; the left elastic bracket assembly 3, the right elastic bracket assembly 6, and the rear suspension assembly 8 play the role of connection, shock absorption, and vibration isolation.

[0093] The above-mentioned rear suspension assembly 8 not only supports the motor assembly 1, but also plays the role of connection, shock absorption and vibration isolation. The rear suspension assembly 8 connects the motor assembly 1 and the rear suspension bracket 9, and plays the role of attenuating and isolating the vibration and force transmitted from the motor assembly 1 to the rear suspension bracket 9.

[0094] The suspension system adopts the left drive motor bracket 4 of any of the above embodiments, which has the advantages of simple structure, ingenious design, stable structure, good reliability, strong load-bearing capacity, light weight, low cost and easy assembly. It can ensure the overall stability of the structure, improve the overall modal and reduce the stress requirements, and at the same time achieve lightweight design and reduce the cost of parts.

[0095] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0096] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0097] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A left bracket of a driving motor, characterized in that: include: A mounting plate (41), comprising a top plate (411) and a side plate (412), wherein the top plate (411) and the side plate (412) are connected to each other to form an "L"-shaped structure, wherein a first through hole group is provided on the top plate (411), and a second through hole group is provided at one end of the side plate (412) away from the top plate (411); The reinforcing ribs include a first longitudinal rib (42), a second longitudinal rib (43), and a third longitudinal rib (44), all of which are vertically fixedly connected to the side plate (412) and the tops of which are vertically fixedly connected to the top plate (411), and ends of the first longitudinal rib (42), the second longitudinal rib (43), and the third longitudinal rib (44) away from the top plate (411) all extend toward the second through hole group; A connecting plate (47) is parallel to the side plate (412); the first longitudinal rib (42), the second longitudinal rib (43), and the third longitudinal rib (44) are all fixedly connected to the connecting plate (47); a third through hole group is provided on the connecting plate (47); and the third through hole group is coaxial with the second through hole group.

2. The left bracket of the driving motor according to claim 1, characterized in that: The lower end of the second longitudinal rib (43) is bent and extended and fixedly connected to the first longitudinal rib (42); a transverse rib (45) fixed to the connecting plate (47) is connected between the second longitudinal rib (43) and the third longitudinal rib (44); a sleeve (46) connecting the second through hole group and the third through hole group is fixed between the side plate (412) and the connecting plate (47).

3. The left bracket of the driving motor according to claim 1, characterized in that: The first through hole group includes a first hole (4111), a second hole (4112), and a third hole (4113); the first hole (4111) is located between the first longitudinal rib (42) and the second longitudinal rib (43); the third hole (4113) is located between the second longitudinal rib (43) and the third longitudinal rib (44); and the second hole (4112) is located between the first hole (4111) and the third hole (4113).

4. The left support of the driving motor as claimed in claim 3, characterized in that: The side plate (412) and the connecting plate (47) are both provided with a notch (4126) for adapting the motor, and the first through hole group includes a fourth hole (4123) and a fifth hole (4124) located between the first longitudinal rib (42) and the notch (4126), and a sixth hole (4125) located between the second longitudinal rib (43) and the third longitudinal rib (44); The third through hole group includes a seventh hole (471) coaxial with the fourth hole (4123), an eighth hole (472) coaxial with the fifth hole (4124), and a ninth hole (473) coaxial with the sixth hole (4125).

5. The left support of the driving motor as claimed in claim 4, characterized in that: The longitudinal length of the first longitudinal rib (42) is greater than the longitudinal lengths of the second longitudinal rib (43) and the third longitudinal rib (44); the fourth hole (4123) and the fifth hole (4124) are located below the second longitudinal rib (43); and a reinforcing ring sheet (4114) coaxial with the third hole (4113) is fixed on the top plate (411).

6. The left support of the driving motor according to claim 1, characterized in that: The first longitudinal rib (42) comprises a first upper plate (421), a first middle plate (422), and a first lower plate (423) which are welded in sequence, the transverse width of the first upper plate (421) is greater than the transverse width of the first lower plate (423), the first middle plate (422) is inclined toward the second longitudinal rib (43) and the cross-sectional area gradually decreases from top to bottom, and the connecting plate (47) is welded to the first lower plate (423).

7. The left support of the driving motor according to claim 1, characterized in that: The second longitudinal rib (43) comprises a second upper plate (431) and a second lower plate (432) which are welded together, the second lower plate (432) is inclined toward the first longitudinal rib (42) and is welded together with the first longitudinal rib (42), and the connecting plate (47) is welded together with the second lower plate (432).

8. The left support of the driving motor according to claim 1, characterized in that: The third longitudinal rib (44) comprises a third upper plate (441), a third middle plate (442), and a third lower plate (443) which are welded in sequence, the transverse width of the third upper plate (441) is greater than the transverse width of the third lower plate (443), the third middle plate (442) is inclined away from the second longitudinal rib (43) and the cross-sectional area gradually decreases from top to bottom, and the connecting plate (47) is welded to the third lower plate (443).

9. The left support of the driving motor according to claim 1, characterized in that: A first lightening hole (4121) is provided between the first longitudinal rib (42) and the second longitudinal rib (43), a second lightening hole (4122) is provided between the second longitudinal rib (43) and the third longitudinal rib (44), and both the first lightening hole (4121) and the second lightening hole (4122) are located above the connecting plate (47).

10. A suspension system, characterized in that: include: A vehicle frame, the vehicle frame comprising a left longitudinal beam assembly (10) and a right longitudinal beam assembly (11) which are spaced apart from each other, and a sub-frame assembly (12) which is fixedly connected between the left longitudinal beam assembly (10) and the right longitudinal beam assembly (11); A motor assembly (1), the motor assembly (1) being located at the front side of the subframe assembly (12) and between the left longitudinal beam assembly (10) and the right longitudinal beam assembly (11); A suspension unit, the suspension unit comprising a left bracket (2) connected to the left longitudinal beam assembly (10), and a right bracket (5) connected to the right longitudinal beam assembly (11); A left elastic bracket assembly (3) connected to the left bracket (2), and a right elastic bracket assembly (6) connected to the right bracket (5); A left drive motor bracket (4) according to any one of claims 1 to 9 connected between the left elastic bracket assembly (3) and the motor assembly (1); a right drive motor bracket (7) connected between the right drive motor elastic bracket assembly (6) and the motor assembly (1); A rear suspension bracket (9) connected to the auxiliary frame assembly (12), and a rear suspension assembly (8) connected between the rear suspension bracket (9) and the motor assembly (1).

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