A new energy automobile motor suspension assembly

Abstract

The application relates to the field of motor installation, and discloses a new energy automobile motor suspension assembly, which comprises a mounting rack for supporting a motor, the upper surface of the mounting rack is provided with a magnetorheological shock absorber, a closed rack is fixed to the upper end of an output shaft of the magnetorheological shock absorber and is used for fixing an overall device, a positive adjustment assembly is arranged on the outer wall of the magnetorheological shock absorber, an upper protection assembly is arranged on the lower surface of the closed rack, a control element is connected with the magnetorheological shock absorber through a signal and is used for controlling the positive adjustment resistance of the magnetorheological shock absorber, and a detection element is installed at the position of an automobile central controller and is used for acquiring vehicle driving motor rotating speed information. Through the arrangement of the detection element, the vehicle driving motor rotating speed signal can be detected; when the vehicle driving motor rotating speed is less than 1000 r / min, the vehicle is in a low-speed running state; at this time, the vehicle mainly bears low-frequency high-amplitude vibration; at this time, the control element controls the magnetorheological shock absorber to reduce the resistance; and at this time, the damping coefficient of the device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor installation, in particular to a new energy automobile motor suspension assembly. BACKGROUND

[0002] In the field of new energy vehicles, the motor as the core power source, its running stability directly affects the driving experience, endurance and component life of the vehicle, the traditional motor suspension assembly adopts single rubber damping or fixed metal frame structure, there are three core pain points:

[0003] 1. Unable to adaptively adjust the damping stiffness according to different working conditions of the motor, resulting in high vibration transmission rate and high noise in the vehicle;

[0004] 2. Poor heat dissipation performance, heat generated by the motor operation is easy to accumulate in the suspension part, accelerating the aging of rubber and fatigue of metal parts;

[0005] 3. Lack of linkage between structures, each component is independent, and the overall adaptability is low. SUMMARY

[0006] In view of the defects of the prior art, the present application provides a new energy automobile motor suspension assembly, which solves the problem of "the structure of the traditional motor suspension assembly in the prior art is relatively simple, and the function is relatively single".

[0007] In order to achieve the above purpose, the present application is realized by the following technical scheme: a new energy automobile motor suspension assembly, comprising:

[0008] A mounting frame for supporting the motor, the upper surface of the mounting frame is provided with a magneto-rheological damper;

[0009] A closed frame fixed to the upper end of the magneto-rheological damper output shaft for fixing the overall device;

[0010] An active adjustment assembly arranged on the outer wall of the magneto-rheological damper;

[0011] An upper protection assembly arranged on the lower surface of the closed frame;

[0012] A control element connected with the magneto-rheological damper through signal connection for controlling the active adjustment resistance of the magneto-rheological damper;

[0013] A detection element installed at the position of the automobile central controller for obtaining the vehicle driving motor speed information, and connected with the control element through signal connection.

[0014] Preferably, the upper protection assembly comprises a support frame fixedly connected to the lower surface of the closed frame, the control element is installed on the inner wall of the support frame, and the lower surface of the support frame is fixedly connected with a protection pad.

[0015] Preferably, the gap between the protective pad and the support frame is provided with a plurality of sets of pressure sensors, and the pressure sensors are signal-connected with the control element.

[0016] Preferably, the active adjustment assembly comprises a fixing ring, which is installed on the outer wall of the magnetorheological shock absorber, and a sliding rod is hinged to one end of the fixing ring away from the mounting frame, and a sliding sleeve is sleeved on the outer wall of the sliding rod, and a fixing member is hinged to the outer wall of the sliding sleeve.

[0017] Preferably, the outer wall of the sliding sleeve is fixedly connected with a protective sleeve, the inner wall of the protective sleeve is provided with an adjusting motor, the top end of the sliding sleeve is fixedly connected with a closed cover, the inner wall of the closed cover is provided with a gear set, and the adjusting motor is drivingly connected with an adjusting screw through the gear set.

[0018] Preferably, the adjusting screw penetrates and is screw-connected to the upper end of the sliding rod, and the inner wall of the active adjustment assembly is provided with an energy supply assembly.

[0019] Preferably, the energy supply assembly comprises a silica gel sleeve, piezoelectric material and an electrode are sequentially installed on the inner wall of the silica gel sleeve from left to right, and the electrode is electrically connected with the magnetorheological shock absorber and the control element through wires.

[0020] Preferably, the sliding sleeve is provided as a hollow circular sleeve, the inner wall of the sliding sleeve is provided with a receiving cavity, and the silica gel sleeve is fixedly connected to the inner wall of the receiving cavity.

[0021] Preferably, the outer wall of the sliding rod is provided with a receiving groove, the silica gel sleeve is inserted into the inner wall of the receiving groove, the inner wall of the silica gel sleeve is filled and closed by using a colloid at a hollow position, and the electrode is electrically connected with the magnetorheological shock absorber and the adjusting motor through wires.

[0022] Preferably, the control element is signal-connected with the adjusting motor, and the fixing member and the closed frame are connected with the vehicle body through bolts.

[0023] The application provides a new energy automobile motor suspension assembly.

[0024] 1. The detection element can detect the speed of the vehicle driving motor, when the speed of the vehicle driving motor is less than 1000r / min, the vehicle is in a low-speed running state, at this time, the vehicle mainly bears low-frequency high-amplitude vibration, at this time, the control element controls the resistance of the magnetorheological shock absorber to decrease, the damping coefficient of the device decreases, and flexible buffering of the starting impact can be realized, when the speed of the vehicle driving motor is higher than 3000r / min, the vibration becomes high-frequency low-amplitude, the control element controls the resistance of the magnetorheological shock absorber, and the damping coefficient of the magnetorheological shock absorber increases, so that the high-frequency vibration and noise of the motor are inhibited and the transmission of the high-frequency vibration and noise to the automobile body is inhibited, the overall device can be adjusted according to different environments when working, and the applicability is good.

[0025] 2. The application can further control the rotation of the adjusting motor through the control element when the vehicle state changes, and when the vehicle is in a high-speed state, the adjusting motor controls the rotation of the adjusting screw to control the upward movement of the slide rod, which in turn drives the mounting frame to move close to the closed frame, thereby further suppressing the high-frequency vibration and noise of the motor and its transmission to the vehicle body, and when the vehicle is in a low-speed state, the adjusting motor controls the rotation of the adjusting screw to control the downward movement of the slide rod, which in turn drives the mounting frame to move away from the closed frame, thereby fully buffering the low-frequency vibration of the driving motor and reducing the probability of the motor shaking and colliding with the protective assembly, and facilitating heat dissipation of the motor.

[0026] 3. The application sets up a pressure sensor, which can detect the pressure when the protective pad is impacted, and when the pressure is greater than the threshold value, it means that the motor activity space is too small at this time, and the motor should be appropriately adjusted away from the upper protective assembly.

[0027] 4. The application sets up a power supply assembly, in addition to using the original battery of the vehicle to supply power, when the slide rod moves up and down, it will extrude the silicone sleeve through the outer wall, which in turn extrudes the piezoelectric material and electrode inside the silicone sleeve, thereby generating electricity, and since the slide rod reciprocates up and down during vehicle movement, it can continuously generate electricity, which can be used to control the electric structure in the device to work, thereby reducing the consumption of vehicle power. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective view of the overall structure of the application;

[0029] Figure 2 is a cross-sectional view of the application;

[0030] Figure 3 is a split schematic view of the active adjustment assembly of the application;

[0031] Figure 4 is a cross-sectional view of the active adjustment assembly of the application;

[0032] Figure 5 is a cross-sectional view of the slide sleeve of the application;

[0033] Figure 6 is a cross-sectional view of the silicone sleeve of the application;

[0034] Figure 7 is a control flowchart of the application.

[0035] Wherein, 1, mounting frame; 2, magnetorheological shock absorber; 3, closed frame; 4, upper protection assembly; 41, protection pad; 42, support frame; 43, pressure sensor; 5, active adjustment assembly; 51, fixed ring; 52, sliding rod; 53, sliding sleeve; 54, fixing piece; 55, protective sleeve; 56, adjusting motor; 57, gear set; 58, closing cover; 59, adjusting screw; 6, energy supply assembly; 61, containing cavity; 62, silica gel sleeve; 63, containing groove; 64, piezoelectric material; 65, electrode; 7, control element; 8, detection element. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] Embodiment:

[0038] The embodiment of the present application provides a new energy automobile motor suspension assembly, characterized by comprising: a mounting frame 1, a closed frame 3, an active adjustment assembly 5, an upper protection assembly 4 and a control element 7. The mounting frame 1 is used for supporting the motor and serves as a basic carrier for connecting the motor with other components of the suspension assembly. The structural strength of the mounting frame 1 matches the weight of the motor and the impact force during operation. The mounting frame 1 is made of high-strength alloy material to ensure stable support. The outer wall of the mounting frame 1 is provided with a through hole, which can be used to assist heat dissipation of the motor.

[0039] The magnetorheological shock absorber 2 is mounted on the upper surface of the mounting frame 1. The magnetorheological shock absorber 2 serves as a core damping component and can adjust the damping characteristics by changing the magnetic field strength of the internal magnetorheological fluid. The closed frame 3 is fixed to the upper end of the output shaft of the magnetorheological shock absorber 2 and is used to fix the overall device.

[0040] The active adjustment assembly 5 is arranged on the outer wall of the magnetorheological shock absorber 2 and can assist in adjusting the position and attitude of the motor from the side, making up for the deficiency of a single shock absorber in multidirectional adjustment. The upper protection assembly 4 is arranged on the lower surface of the closed frame 3 and is located above the motor. When the motor shakes upward accidentally, the upper protection assembly 4 can play a buffering and blocking role, avoiding direct rigid collision between the motor and the closed frame 3 and causing damage.

[0041] The control element 7 is connected with the magnetorheological shock absorber 2 through a signal connection, for controlling the magnetorheological shock absorber 2 to actively adjust the resistance size, the control element 7 is internally provided with a preset control algorithm, and the optimal damping value can be quickly calculated according to the received external signal and a control instruction is sent, so that the real-time response of the shock absorber is realized, and the detection element 8 is installed at the position of the automobile central controller, for obtaining the vehicle driving motor speed information, the position can directly and accurately read the core operation data of the vehicle, and delay or interference in the signal transmission process is avoided.

[0042] The detection element 8 is connected with the control element 7 through a signal connection, an anti-interference signal transmission line is used between the two, so that the speed information can be completely and timely transmitted to the control element 7, and reliable data basis is provided for subsequent shock adjustment.

[0043] The support frame 42 is fixedly connected to the lower surface of the closed frame 3 in a welding manner, so that the support frame 42 is prevented from loosening and falling off due to vibration during vehicle operation, the control element 7 is installed on the inner wall of the support frame 42, and the inner wall of the support frame 42 is provided with an installation groove and a fixing hole matched with the control element 7.

[0044] The lower surface of the support frame 42 is fixedly connected with a protective pad 41, the protective pad 41 is made of elastic rubber material and has good buffering performance, the thickness and hardness of the protective pad 41 are designed according to the maximum shaking amplitude of the motor, so that the buffering effect is ensured and excessive deformation is avoided, a plurality of pressure sensors 43 are installed in the gap between the protective pad 41 and the support frame 42, and the plurality of pressure sensors 43 are uniformly distributed between the protective pad 41 and the support frame 42, so that the pressure received by the protective pad 41 at different positions can be comprehensively monitored, and the detection accuracy is improved.

[0045] The pressure sensor 43 is connected with the control element 7 through a signal connection, when the protective pad 41 is subjected to pressure, the pressure sensor 43 converts the pressure signal into an electric signal and transmits the electric signal to the control element 7, and the control element 7 can judge the shaking condition of the motor according to the signal and timely make an adjustment response.

[0046] The fixed ring 51 is installed on the outer wall of the magnetorheological shock absorber 2, the inner diameter of which is accurately matched with the outer diameter of the magnetorheological shock absorber 2, and an anti-skid pad is arranged on the contact surface, further enhancing the stability of the connection. The end of the fixed ring 51 away from the mounting frame 1 is hinged with a sliding rod 52. The hinged structure allows the sliding rod 52 to rotate within a certain angle range, which can adapt to the slight attitude change generated during the operation of the motor, and avoid the breakage of the sliding rod 52 due to rigid connection.

[0047] The outer wall of the sliding rod 52 is sleeved with a sliding sleeve 53. The sliding rod 52 and the sliding sleeve 53 are precisely matched, which not only ensures the smooth sliding of the sliding rod 52 in the sliding sleeve 53, but also reduces the gap between the two, avoiding the generation of additional vibration noise. The outer wall of the sliding sleeve 53 is hinged with a fixing piece 54, which is used to connect with the vehicle body. The hinged design also provides a certain movement allowance for the sliding sleeve 53, so that the active adjustment assembly 5 can better adapt to the bumps during vehicle driving.

[0048] The outer wall of the sliding sleeve 53 is fixedly connected with a protective sleeve 55 made of metal material, which wraps the adjusting motor 56 inside and can effectively block foreign matter from entering the motor interior, while also playing a certain heat insulation and anti-impact protection role. The inner wall of the protective sleeve 55 is installed with the adjusting motor 56. The adjusting motor 56 selects a high-precision servo motor, which has the characteristics of stable speed and rapid response, and can accurately execute the adjustment instructions issued by the control element 7.

[0049] The top end of the sliding sleeve 53 is fixedly connected with a closed cover 58, which is connected with the sliding sleeve 53 through bolts, facilitating the subsequent maintenance and repair of the gear set 57, adjusting screw 59 and other components inside the sliding sleeve 53. The inner wall of the closed cover 58 is provided with a gear set 57. The gear set 57 is composed of a plurality of precise gears meshing, and its transmission ratio is optimized and designed, which can convert the speed of the adjusting motor 56 into the torque and speed required by the adjusting screw 59, realizing the effect of speed reduction and torque increase.

[0050] The adjusting motor 56 is drivingly connected with the adjusting screw 59 through the gear set 57. Bearings are arranged at the connection parts of the gear set 57, the adjusting motor 56 and the adjusting screw 59 to reduce the friction loss in the transmission process and improve the transmission efficiency and service life of the components. The adjusting screw 59 penetrates and is threadedly connected to the upper end of the sliding rod 52. When the adjusting screw 59 rotates, it can drive the sliding rod 52 to move axially along the sliding sleeve 53 through threaded transmission.

[0051] The inner wall of the active adjustment assembly 5 is provided with the energy supply assembly 6, which serves as an auxiliary power supply device and can supply power to the magnetorheological shock absorber 2 and the adjustment motor 56 when the power supply of the vehicle battery fluctuates or the demand increases, thereby improving the reliability of the device operation. The energy supply assembly 6 comprises a silica gel sleeve 62, which has good elasticity and sealing performance, can protect the internal piezoelectric material 64 and electrode 65, and can deform to drive the internal material to realize energy conversion when being extruded. The electrode 65 is electrically connected to the magnetorheological shock absorber 2 and the control element 7 through wires, so that automatic energy supply can be realized.

[0052] The inner wall of the silica gel sleeve 62 is sequentially provided with the piezoelectric material 64 and the electrode 65 from left to right. The piezoelectric material 64 is selected to be a piezoelectric ceramic sheet, which has significant piezoelectric effect and can generate a significant potential difference when being mechanically extruded. The electrode 65 is made of copper foil or silver foil with excellent conductivity, which can effectively collect the electric energy generated by the piezoelectric material 64. The sliding sleeve 53 is provided as a hollow circular sleeve, which not only reduces the weight of the sliding sleeve 53, but also provides space for the accommodation cavity 61, so that the energy supply assembly 6 can be ingeniously integrated inside the active adjustment assembly 5.

[0053] The hollow position of the inner wall of the sliding sleeve 53 is provided as the accommodation cavity 61, which has a size accurately matched with the outer shape of the silica gel sleeve 62, so that the silica gel sleeve 62 can be stably fixed in the accommodation cavity 61 after installation and will not deviate with the movement of the sliding rod 52. The silica gel sleeve 62 is fixedly connected to the inner wall of the accommodation cavity 61 by using a high-temperature-resistant and aging-resistant adhesive, so as to ensure that the silica gel sleeve 62 will not be separated from the accommodation cavity 61 during long-term use.

[0054] The outer wall of the sliding rod 52 is provided with the accommodation groove 63, which has a depth and width slightly larger than the size of the silica gel sleeve 62, so as to provide sufficient accommodation space for the silica gel sleeve 62 and ensure that the silica gel sleeve 62 can be smoothly extruded when the sliding rod 52 moves. The silica gel sleeve 62 is inserted into the inner wall of the accommodation groove 63, and the insertion fit mode enables the movement of the sliding rod 52 to directly act on the silica gel sleeve 62, thereby improving the energy conversion efficiency and avoiding energy loss during transmission.

[0055] The hollow position of the inner wall of the silica gel sleeve 62 is filled and sealed with a colloid. The filled colloid is selected to be an insulating and waterproof epoxy resin adhesive, which can prevent external water vapor and dust from entering the silica gel sleeve 62 to damage the piezoelectric material 64 and the electrode 65, and can also ensure that the elasticity of the silica gel sleeve 62 is not affected. The electrode 65 is electrically connected to the magnetorheological shock absorber 2 and the adjustment motor 56 through wires. The wires are selected to be automobile special wires with wear resistance and high and low temperature resistance, and a bellows is used for protection during wiring to avoid damage to the wires due to vibration and friction.

[0056] The control element 7 is connected with the adjusting motor 56 through a signal, which can realize accurate control of the rotating speed and direction of the adjusting motor 56, and meet the adjusting requirements under different working conditions. The fixing member 54 and the closed frame 3 are connected with the vehicle body through bolts, the bolts used for connection are high-strength anti-theft bolts, and spring washers are arranged on the contact surfaces of the bolts and the vehicle body and the components to prevent the bolts from loosening due to vibration during the operation of the vehicle.

[0057] Working principle: The detection element 8 is installed at the position of the automobile central controller, and the rotating speed information of the vehicle driving motor is acquired in real time and transmitted to the control element 7; when the rotating speed of the vehicle driving motor is less than 1000 r / min and the vehicle is in a low-speed running state and bears low-frequency high-amplitude vibration, the control element 7 controls the magnetorheological shock absorber 2 to reduce the resistance and reduce the damping coefficient of the device to realize flexible buffering of the starting impact, and simultaneously controls the adjusting motor 56 in the active adjusting assembly 5 to start, so that the adjusting motor 56 drives the adjusting screw 59 to rotate through the gear set 57, the sliding rod 52 moves downward along the sliding sleeve 53, and the mounting frame 1 moves away from the closed frame 3, so that the low-frequency vibration of the driving motor can be fully buffered, the probability of the motor shaking and colliding with the upper protection assembly 4 is reduced, and sufficient space is provided for heat dissipation of the motor; when the rotating speed of the vehicle driving motor is higher than 3000 r / min and the vehicle is in a high-speed running state and bears high-frequency low-amplitude vibration, the control element 7 controls the magnetorheological shock absorber 2 to increase the resistance and improve the damping coefficient to suppress the high-frequency vibration and noise of the motor and the transmission thereof to the automobile body; simultaneously, the adjusting motor 56 is controlled to operate in reverse, the sliding rod 52 is driven to move upward through the adjusting screw 59, the mounting frame 1 approaches the closed frame 3, and the high-frequency vibration and noise of the motor and the transmission thereof to the automobile body are further suppressed; in this process, the pressure sensor 43 between the protection pad 41 and the support frame 42 in the upper protection assembly 4 detects the pressure borne by the protection pad 41 in real time, and if the pressure is greater than a threshold value, the signal is transmitted to the control element 7, prompting that the adjusting motor needs to move away from the upper protection assembly 4; simultaneously, when the sliding rod 52 moves upward and downward, the silica gel sleeve 62 in the sliding sleeve 53 is extruded through the accommodating groove 63 on the outer wall, the piezoelectric material 64 inside the silica gel sleeve 62 is extruded with the electrode 65, electric energy is generated, the electrode 65 transmits the electric energy to the magnetorheological shock absorber 2 and the adjusting motor 56 through the wire, and the electric energy serves as an auxiliary power source to reduce the energy consumption of the vehicle battery, and the components are cooperated to realize stable operation and self-adaptive adjustment of the motor under different working conditions.

[0058] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle motor suspension assembly, characterized in that, The utility model relates to a kind of active damping device for vehicle drive motor, including: Mounting frame (1) for supporting motor, the upper surface of the mounting frame (1) is mounted with magnetorheological shock absorber (2); Enclosure frame (3) is fixed to the upper end of magnetorheological shock absorber (2) output shaft, for fixing overall device; Active adjustment component (5) is arranged in the outer wall of magnetorheological shock absorber (2); Upper protection component (4) is arranged in the lower surface of enclosure frame (3); Control element (7) is connected with magnetorheological shock absorber (2) by signal, for controlling the active adjustment resistance size of magnetorheological shock absorber (2); Detection element (8) is installed in the position of automobile central controller, for obtaining vehicle drive motor rotating speed information, and is connected with control element (7) by signal.

2. The new energy vehicle motor suspension assembly according to claim 1, characterized in that, The upper protection component (4) includes support frame (42), the support frame (42) is fixedly connected on the lower surface of the enclosure frame (3), the control element (7) is installed on the inner wall of the support frame (42), and the lower surface of the support frame (42) is fixedly connected with protective pad (41).

3. The new energy vehicle motor suspension assembly according to claim 2, characterized in that, The gap position between the protective pad (41) and the support frame (42) is provided with a plurality of pressure sensors (43), and the pressure sensors (43) are connected with the control element (7) by signal.

4. The new energy vehicle motor suspension assembly of claim 1, wherein, The active adjustment component (5) includes a fixed ring (51), the fixed ring (51) is installed on the outer wall of magnetorheological shock absorber (2), the end, away from the mounting frame (1), of the fixed ring (51) is hinged with a sliding rod (52), the outer wall of the sliding rod (52) is sleeved with a sliding sleeve (53), and the outer wall of the sliding sleeve (53) is hinged with a fixing part (54).

5. The new energy vehicle motor suspension assembly according to claim 4, characterized in that, The outer wall of the sliding sleeve (53) is fixedly connected with a protective sleeve (55), the inner wall of the protective sleeve (55) is installed with an adjusting motor (56), the top end of the sliding sleeve (53) is fixedly connected with a closing cover (58), the inner wall of the closing cover (58) is provided with a gear set (57), and the adjusting motor (56) is drivingly connected with an adjusting screw (59) through the gear set (57).

6. The new energy vehicle motor suspension assembly according to claim 5, characterized in that, The adjusting screw (59) penetrates and is threadedly connected to the upper end of the sliding rod (52), and the inner wall of the active adjustment component (5) is provided with an energy supply component (6).

7. The new energy vehicle motor suspension assembly according to claim 6, characterized in that, The energy supply component (6) includes a silica gel sleeve (62), the inner wall of the silica gel sleeve (62) is sequentially installed with a piezoelectric material (64) and an electrode (65) from left to right, and the electrode (65) is electrically connected with the magnetorheological shock absorber (2) and the control element (7) by wire.

8. The new energy vehicle motor suspension assembly according to claim 7, characterized in that, The sliding sleeve (53) is provided as a hollow circular sleeve, the inner wall of the sliding sleeve (53) is provided as a receiving cavity (61), and the silica gel sleeve (62) is fixedly connected to the inner wall of the receiving cavity (61).

9. The new energy vehicle motor suspension assembly according to claim 8, characterized in that, The outer wall of the sliding rod (52) is provided with a receiving groove (63), the silica gel sleeve (62) is inserted into the inner wall of the receiving groove (63), the inner wall of the silica gel sleeve (62) is filled and closed by using glue, and the electrode (65) is electrically connected with the magnetorheological shock absorber (2) and the adjusting motor (56) by wire.

10. The new energy vehicle motor suspension assembly according to claim 5, characterized in that, The control element (7) is connected with the adjusting motor (56) by signal, and the fixing part (54) and the enclosure frame (3) are connected with the vehicle body by bolts.

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