Electric drive system assembly of vehicle and vehicle thereof

Abstract

The present application relates to an electric drive system assembly of a vehicle and the vehicle thereof, comprising: a drive motor and a motor controller, wherein the drive motor is connected to the rear axle of the vehicle; the motor controller comprises a drive board and a control board which are separately arranged, wherein the drive board is located inside the drive motor, the drive board is connected to the drive motor and the battery of the vehicle, and the control board is located outside the drive motor and is connected to the body of the vehicle or the frame of the vehicle. The electric drive system assembly of the vehicle and the vehicle thereof of the present solution can save the wiring harness cost and the layout space of the chassis, while also improving the integration of the vehicle control system and reducing the risk of failure of the control board due to excessive impact.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to an electric drive system assembly of a vehicle and a vehicle thereof. Background Art

[0002] In electric vehicles, the function of the motor controller is to convert the electrical energy stored in the power battery into the electrical energy required to drive the motor according to instructions such as gear position, throttle, and brake, to control the starting, forward and backward speed, climbing intensity and other driving conditions of the electric vehicle, or to help the electric vehicle brake and store part of the braking energy in the power battery.

[0003] In the prior art, there are many problems that need to be solved in the layout of the motor controller on the whole vehicle. For example, the motor controller and the drive motor need to be connected through a wiring harness, but the cost of the wiring harness is high, and the wiring harness will take up more chassis layout space. At the same time, the vibration of the drive motor can easily cause the failure of the wiring harness seal; or, the motor controller is connected to the rear axle, but the motor controller will directly bear the impact vibration from the rear axle, resulting in the failure of some functions of the motor controller, which is not conducive to improving the integration of the vehicle control system. Utility Model Content

[0004] The purpose of the present application is to provide a vehicle electric drive system assembly and a vehicle thereof, which can save wiring harness costs and chassis layout space while also improving the integration of the vehicle control system and reducing the risk of failure of the control panel due to excessive impact.

[0005] The first aspect of the present application discloses an electric drive system assembly for a vehicle, comprising: a drive motor and a motor controller, wherein the drive motor is connected to the rear axle of the vehicle; the motor controller comprises a drive board and a control board which are separately arranged, wherein the drive board is located inside the drive motor, the drive board is connected to the drive motor and the battery of the vehicle, and the control board is located outside the drive motor and is connected to the body of the vehicle or the frame of the vehicle.

[0006] In an exemplary embodiment of the present application, the driving motor includes a motor body, a shell and an elastic buffer structure, the motor body is located in the shell, and the driving plate is located in the shell; wherein the elastic buffer structure is connected to the shell, and the driving plate is connected to the elastic buffer structure.

[0007] In an exemplary embodiment of the present application, the shell is provided with a mounting hole, part of the elastic buffer structure is inserted into the mounting hole, and another part of the elastic buffer structure is located outside the mounting hole and protrudes from the inner surface of the shell; the drive plate is connected to the part of the elastic buffer structure protruding from the inner surface of the shell by interference fit.

[0008] In an exemplary embodiment of the present application, the elastic buffer structure includes a vibration-damping pad and a positioning piece, part of the positioning piece is inserted into the mounting hole, and the other part of the positioning piece is located outside the mounting hole and protrudes from the inner surface of the shell; the vibration-damping pad is sleeved on the positioning piece, and the vibration-damping pad is located outside the mounting hole; the drive plate is connected to the vibration-damping pad by interference fit.

[0009] In an exemplary embodiment of the present application, the positioning member includes a bushing and a fastener, the diameter of the bushing is larger than the diameter of the mounting hole, the fastener is sequentially passed through the bushing and the mounting hole, and fastens the bushing to the inner surface of the shell; the vibration damping pad is sleeved on the bushing.

[0010] In an exemplary embodiment of the present application, a circumferential ring of the vibration-damping pad is provided with a slot, and the drive plate is clipped into the slot.

[0011] In an exemplary embodiment of the present application, the clamping groove is spaced apart from the shell along the axial direction of the vibration damping pad.

[0012] In an exemplary embodiment of the present application, the driving plate is spaced apart from at least a portion of the housing.

[0013] In an exemplary embodiment of the present application, the motor body includes a rotor assembly, a stator assembly and a rotary transformer, the rotor assembly, the stator assembly and the rotary transformer are all located in the housing, and the drive plate is connected to the winding of the stator assembly.

[0014] The second aspect of the present application discloses a vehicle, including a vehicle controller and the electric drive system assembly, wherein the control board is connected to the vehicle controller.

[0015] The beneficial effects of this application scheme are:

[0016] In an embodiment of the present application, the drive board and control board of the motor controller are separately arranged, and the drive board is installed in the drive motor, so that the motor controller does not need to be connected to the drive motor through a three-phase wiring harness, which can save both the wiring harness cost and the chassis layout space; in addition, the control board is installed outside the drive motor, so that the control board can be integrated with the vehicle controller on the vehicle body or frame, which is conducive to improving the integration of the vehicle control system, and at the same time can also avoid the control board and the drive motor being integrated on the rear axle to directly bear the impact vibration of the rear axle, thereby reducing the risk of failure of the control board due to excessive impact.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the electric drive system assembly in an embodiment of the present application arranged on a whole vehicle is shown.

[0019] Figure 2 A schematic structural diagram of the electric drive system assembly in an embodiment of the present application is shown.

[0020] Figure 3 A schematic diagram of the structure of the driving board in the embodiment of the present application is shown.

[0021] Figure 4 A schematic structural diagram of the elastic buffer structure in an embodiment of the present application is shown.

[0022] Among them, 1. drive motor; 101. mounting hole; 102. slot; 11. motor body; 111. rotor assembly; 112. stator assembly; 113. rotary transformer; 12. housing; 121. front end cover; 122. middle housing part; 123. rear end cover; 13. elastic buffer structure; 131. vibration damping pad; 131a. first vibration damping part; 131b. second vibration damping part; 131c. third vibration damping part; 132. positioning piece; 132a. bushing; 132b. fastener; 2. motor controller; 201. through hole; 21. drive board; 211. capacitor; 212. IGBT module; 22. control board; 3. rear axle; 4. vehicle controller; 5. three-phase wiring harness; 6. battery; 7. radiator; 8. DC bus. DETAILED DESCRIPTION

[0023] The following will describe the implementation of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0025] like Figures 1 to 4As shown, this embodiment proposes an electric drive system assembly for a vehicle, including: a drive motor 1 and a motor controller 2, the drive motor 1 is connected to the rear axle 3 of the vehicle; the motor controller 2 includes a drive board 21 and a control board 22 which are separately arranged, the drive board 21 is located inside the drive motor 1, the drive board 21 is connected to the drive motor 1 and the battery 6 of the vehicle, and the control board 22 is located outside the drive motor 1 and is connected to the body of the vehicle or the frame of the vehicle.

[0026] In this embodiment, the drive board 21 and the control board 22 of the motor controller 2 are separately arranged, and the drive board 21 is installed in the drive motor 1, so that the motor controller 2 does not need to be connected to the drive motor 1 through the three-phase wiring harness 5, which can save both the wiring harness cost and the chassis layout space; in addition, the control board 22 is installed outside the drive motor 1, so that the control board 22 can be integrated with the vehicle controller 4 on the vehicle body or frame, which is beneficial to improving the integration of the vehicle control system, and at the same time can also avoid the control board 22 and the drive motor 1 being integrated on the rear axle 3 to directly bear the impact vibration of the rear axle 3, thereby reducing the risk of failure of the control board 22 due to excessive impact.

[0027] In this embodiment, the control board 22 is electrically connected to the driving board 21 . The control board 22 receives a control signal from the vehicle controller 4 and sends the signal to the driving board 21 for execution.

[0028] Combination Figure 1 , Figure 2 and Figure 4 As shown, the drive motor 1 includes a motor body 11, a shell 12 and an elastic buffer structure 13, the motor body 11 is located in the shell 12, and the drive plate 21 is located in the shell 12; wherein the elastic buffer structure 13 is connected to the shell 12, and the drive plate 21 is connected to the elastic buffer structure 13.

[0029] In this embodiment, the drive plate 21 is located in the housing 12 and connected to the housing 12 via the elastic buffer structure 13. Since the elastic buffer structure 13 has a certain vibration reduction effect, the elastic buffer structure 13 can reduce the vibration of the drive motor 1 and the impact vibration of the rear axle 3 on the drive plate 21, which is beneficial to improve the stability of the drive plate 21 installed in the housing 12.

[0030] In this embodiment, combined with Figure 1 and Figure 4As shown, the housing 12 is provided with a mounting hole 101, part of the elastic buffer structure 13 is inserted into the mounting hole 101, and the other part of the elastic buffer structure 13 is located outside the mounting hole 101 and protrudes from the inner surface of the housing 12; the driving plate 21 is connected to the part of the elastic buffer structure 13 protruding from the inner surface of the housing 12 by interference fit. The driving plate 21 is connected to the housing 12 through the elastic buffer structure 13, which avoids direct connection between the driving plate 21 and the housing 12. The elastic buffer structure 13 can reduce the vibration transmitted from the driving motor 1 to the driving plate 21, thereby ensuring the stability of the driving plate 21 installed in the housing 12.

[0031] Combination Figure 4 As shown, the elastic buffer structure 13 includes a vibration-damping pad 131 and a positioning member 132, a portion of the positioning member 132 is inserted into the mounting hole 101, and another portion of the positioning member 132 is located outside the mounting hole 101 and protrudes from the inner surface of the shell 12; the vibration-damping pad 131 is sleeved on the positioning member 132, and the vibration-damping pad 131 is located outside the mounting hole 101; the drive plate 21 is connected to the vibration-damping pad 131 by interference fit.

[0032] In this embodiment, the material of the vibration-damping pad 131 is rubber. Of course, in other embodiments, other materials that can play a buffering and vibration-damping role, such as silica gel, etc., can be used.

[0033] In this embodiment, part of the positioning member 132 is inserted into the mounting hole 101, and the positioning member 132 is used to fix the driving plate 21 to the housing 12, so as to realize the installation of the driving plate 21 in the housing 12. In addition, the vibration-damping pad 131 located outside the mounting hole 101 is sleeved on the positioning member 132, and the driving plate 21 is connected to the vibration-damping pad 131 by interference fit, that is, the vibration-damping pad 131 is located between the driving plate 21 and part of the positioning member 132 protruding from the inner surface of the housing 12, and the vibration-damping pad 131 plays a certain isolation role, isolating the driving plate 21 from part of the positioning member 132, so as to avoid direct contact between the driving plate 21 and the positioning member 132.

[0034] It should be understood that since part of the positioning member 132 will be inserted into the mounting hole 101 of the shell 12, that is, the positioning member 132 will be in direct contact with the shell 12 of the drive motor 1, the drive motor 1 can transmit vibration to the drive plate 21 through the positioning member 132. Therefore, the vibration damping pad 131 is arranged between the drive plate 21 and the part of the positioning member 132 protruding from the inner surface of the shell 12, which can avoid direct contact between the drive plate 21 and the positioning member 132, prevent the drive motor 1 from transmitting vibration to the drive plate 21 through the positioning member 132, and thus ensure the stability of the drive plate 21 installed in the shell 12.

[0035] Combination Figure 4As shown, the positioning member 132 includes a bushing 132a and a fastener 132b, the diameter of the bushing 132a is larger than the diameter of the mounting hole 101, the fastener 132b is sequentially inserted into the bushing 132a and the mounting hole 101, and fastens the bushing 132a to the inner surface of the shell 12; the vibration damping pad 131 is sleeved on the bushing 132a.

[0036] In this embodiment, the fastener 132b is a bolt, and the drive plate 21 is installed in the housing 12 by a plurality of bolts. The bushing 132a is a metal bushing 132a, and when the bolt is tightened, the axial force of the bushing 132a is applied, so that a stable structure can be formed between the bolt, the drive plate 21 and the housing 12 to ensure the stability of the connection between the drive plate 21 and the housing 12; in addition, the vibration damping pad 131 is sleeved on the bushing 132a, and the vibration damping pad 131 is fixed between the housing 12 and the drive plate 21 by the bushing 132a to ensure the vibration damping effect of the vibration damping pad 131 on the drive plate 21.

[0037] It should be understood that the diameter of the bushing 132a is larger than the diameter of the mounting hole 101 to prevent the bushing 132a from failing when the bolt is passed through the bushing 132a and then through the mounting hole 101, and the bushing 132a enters the mounting hole 101 along with the fastener 132b.

[0038] Combination Figure 4 As shown, a slot 102 is provided on the circumferential ring of the vibration-damping pad 131 , and the driving plate 21 is snapped into the slot 102 .

[0039] In this embodiment, the vibration damping pad 131 includes a first vibration damping portion 131a, a second vibration damping portion 131b and a third vibration damping portion 131c. The first vibration damping portion 131a and the third vibration damping portion 131c are connected to two opposite sides of the second vibration damping portion 131b along the axial direction of the mounting hole 101 in a one-to-one correspondence, and form a clamping groove 102 with the second vibration damping portion 131b. The provision of the clamping groove 102 facilitates the clamping connection between the drive plate 21 and the vibration damping pad 131, thereby improving the convenience of operation. At the same time, when the drive plate 21 is clamped in the clamping groove 102, the first vibration damping portion 131a, the second vibration damping portion 131b and the third vibration damping portion 131c can reduce the axial and radial vibrations along the mounting hole 101 to ensure the stability of the installation of the drive plate 21.

[0040] In this embodiment, the driving plate 21 is provided with a through hole 201 , the second vibration damping portion 131 b is located in the through hole 201 and connected to the hole wall of the through hole 201 , and the bushing 132 a and the fastener 132 b are both penetrated in the through hole 201 .

[0041] In this embodiment, combined with Figure 1 and Figure 4As shown, the slot 102 is located between the first vibration damping portion 131a and the third vibration damping portion 131c, that is, the slot 102 is spaced apart from the housing 12 and the nut of the bolt along the axial direction of the vibration damping pad 131, so as to avoid direct contact between the drive plate 21 engaged in the slot 102 and the housing 12 and the bolt, resulting in direct transmission of vibration from the drive motor 1 and impact vibration of the rear axle 3 to the drive plate 21.

[0042] Combination Figure 4 As shown, the driving plate 21 is spaced apart from the housing 12 in at least a partial area.

[0043] In this embodiment, the first vibration damping portion 131a is farther away from the shell 12 than the third vibration damping portion 131c, and the third vibration damping portion 131c is located between the drive plate 21 and the shell 12, so as to space the drive plate 21 and the shell 12 to avoid direct contact between the drive plate 21 and the shell 12, reduce the vibration of the drive motor 1 and the impact vibration of the rear axle 3 on the drive plate 21, and ensure the stability of the installation of the drive plate 21.

[0044] Combination Figure 2 As shown, the motor body 11 includes a rotor assembly 111 , a stator assembly 112 and a rotary transformer 113 . The rotor assembly 111 , the stator assembly 112 and the rotary transformer 113 are all located in the housing 12 , and the drive plate 21 is connected to the winding of the stator assembly 112 .

[0045] In this embodiment, the shell 12 includes a front end cover 121, an intermediate shell portion 122 and a rear end cover 123, the intermediate shell portion 122 is connected between the front end cover 121 and the rear end cover 123, and the drive plate 21, the rotor assembly 111, the stator assembly 112 and the rotating transformer 113 are all located in the intermediate shell portion 122.

[0046] In this embodiment, the drive board 21 is connected to the winding of the stator assembly 112, and does not need to be connected through the three-phase wire harness 5, thus saving the wire harness cost.

[0047] In other embodiments, the drive board 21 may also be connected to the winding of the stator assembly 112 via a three-phase wiring harness 5 .

[0048] In this embodiment, combined with Figures 1 to 3As shown, the drive board 21 includes a capacitor 211 and an IGBT module 212. The IGBT module 212 is used to convert the direct current from the battery 6 into three-phase alternating current that meets the requirements. The IGBT module 212 includes an input terminal and an output terminal. The input terminal of the IGBT module 212 is connected to the battery 6 to receive the direct current from the battery 6; the output terminal of the IGBT module 212 is connected to the drive motor 1 to output three-phase alternating current to the drive motor 1. In addition, the electric drive system assembly also includes a heat sink 7, which is located in the middle housing portion 122 to take away the heat generated by the IGBT module 212.

[0049] Combination Figure 1 As shown, this embodiment also proposes a vehicle, including a vehicle controller 4 and the above-mentioned electric drive system assembly, and the control board 22 is connected to the vehicle controller 4.

[0050] In summary, the working process of the above electric drive system assembly is:

[0051] When the drive motor 1 is in the driving mode, the motor controller 2 receives instructions from the vehicle controller 4 through the control board 22, and sends a duty cycle signal to the drive board 21. The drive board 21 converts the direct current from the battery 6 (transmitted through the DC bus 8) into three-phase alternating current that meets the requirements, and transmits it to the drive motor 1 through the three-phase wiring harness 5 arranged on the chassis, thereby converting the electrical energy stored in the battery 6 into mechanical energy to provide power for the entire vehicle.

[0052] When the drive motor 1 is in energy recovery mode, the drive motor 1 converts the mechanical energy recovered from the whole vehicle into three-phase AC power and transmits it to the motor controller 2 via the three-phase wiring harness 5. The motor controller 2 converts the three-phase AC power into DC power by receiving instructions from the vehicle controller 4, and charges the battery 6 via the DC bus 8.

[0053] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. An electric drive system assembly for a vehicle, characterized in that: include: a drive motor connected to a rear axle of the vehicle; A motor controller, the motor controller includes a drive board and a control board which are separately arranged, the drive board is located inside the drive motor, the drive board is connected to the drive motor and the battery of the vehicle, and the control board is located outside the drive motor and connected to the body of the vehicle or the frame of the vehicle.

2. The electric drive system assembly according to claim 1, characterized in that: The driving motor comprises a motor body, a housing and an elastic buffer structure, the motor body is located in the housing, and the driving plate is located in the housing; wherein, The elastic buffer structure is connected to the shell, and the driving plate is connected to the elastic buffer structure.

3. The electric drive system assembly according to claim 2, characterized in that: The shell is provided with a mounting hole, a part of the elastic buffer structure is inserted into the mounting hole, and another part of the elastic buffer structure is located outside the mounting hole and protrudes from the inner surface of the shell; The driving plate is connected to a portion of the elastic buffer structure protruding from the inner surface of the shell by interference fit.

4. The electric drive system assembly according to claim 3, characterized in that: The elastic buffer structure includes a vibration-damping pad and a positioning member, a portion of the positioning member is inserted into the mounting hole, and another portion of the positioning member is located outside the mounting hole and protrudes from the inner surface of the housing; The vibration-damping pad is sleeved on the positioning member, and the vibration-damping pad is located outside the mounting hole; The driving plate is connected to the vibration damping pad by interference fit.

5. The electric drive system assembly according to claim 4, characterized in that: The positioning member includes a bushing and a fastener, the diameter of the bushing is larger than the diameter of the mounting hole, and the fastener is sequentially inserted into the bushing and the mounting hole to fasten the bushing to the inner surface of the housing; The vibration-damping pad is sleeved on the bushing.

6. The electric drive system assembly according to claim 5, characterized in that: The circumferential ring of the vibration damping pad is provided with a clamping groove, and the driving plate is clamped in the clamping groove.

7. The electric drive system assembly according to claim 6, characterized in that: The clamping groove is spaced apart from the housing along the axial direction of the vibration damping pad.

8. The electric drive system assembly according to claim 2, characterized in that: The driving plate is spaced apart from at least a portion of the housing.

9. The electric drive system assembly according to claim 2, characterized in that: The motor body comprises a rotor assembly, a stator assembly and a rotary transformer. The rotor assembly, the stator assembly and the rotary transformer are all located in the housing, and the drive plate is connected to the winding of the stator assembly.

10. A vehicle, characterized in that: It comprises a vehicle controller and an electric drive system assembly as described in any one of claims 1 to 9, wherein the control board is connected to the vehicle controller.

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