Electric vehicle EPS test experiment device

Abstract

The utility model relates to the technical field of electric automobiles, in particular to an electric automobile EPS test experiment device which comprises a base, a connecting table is fixedly installed on the left portion of the upper end of the base, a moving mechanism is fixedly installed on the left portion of the upper end of the connecting table, a guide groove is formed in the middle of the upper end of the connecting table, and sliding grooves are formed in the front end and the rear end of the connecting table. A power-assisted motor is fixedly mounted at the upper end of the moving mechanism, a bearing mechanism is fixedly mounted in the middle of the upper end of the base, and a rotating shaft is movably connected into the bearing mechanism in a penetrating mode. Compared with manual operation, the electric automobile EPS test experimental device can more accurately align and connect the output shaft of the power-assisted motor with the rotating shaft, can quickly realize approaching and connection of the output shaft of the power-assisted motor with the rotating shaft, saves time of manual operation, and can greatly improve test efficiency especially under the condition of multiple times of connection operation. The operation time can be reduced, and the overall test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to an experimental device for testing EPS (Electric Power Surgery) in electric vehicles. Background Technology

[0002] Electric power steering (EPS) is one of the key components of electric vehicles. It uses an electronic control unit to control the motor to provide assistance based on signals such as vehicle speed and steering angle, enabling the driver to control the vehicle steering more easily and precisely. The EPS system not only affects the driving comfort of the vehicle, but also plays a vital role in driving safety. For example, when driving at high speeds, the EPS system needs to provide appropriate assistance to ensure that the driver can stably control the steering wheel and avoid loss of vehicle control due to excessive or insufficient assistance.

[0003] In the published patent (CN208705063U, an experimental device for testing EPS in electric vehicles), a pointer is installed at one end of the rotating shaft, and a scale is installed on the side wall of the machine body on the side of the pointer. The motor provides the number of revolutions under different loads and resistances, that is, the angle of rotation of the car tire under different torques, and can detect the number of revolutions of the assist motor in both forward and reverse directions, i.e., returning to center. Although it can detect the number of revolutions of the assist motor under different resistances, manually pushing the moving plate requires manual operation, which is relatively cumbersome and time-consuming. When conducting multiple tests or frequently adjusting the position of the moving plate, manual operation will reduce testing efficiency and increase testing costs and time costs. Moreover, when different operators manually push the moving plate, due to differences in operating habits and force, it is difficult to ensure good consistency in the process and results of each push, which will bring additional errors and uncertainties to the test, which is not conducive to accurate evaluation and analysis of the EPS system. Therefore, we introduce a new experimental device for testing EPS in electric vehicles. Utility Model Content

[0004] The main objective of this invention is to provide an experimental device for testing EPS (Electric Power Surgery) in electric vehicles, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An EPS (Electric Power Surge) testing experimental device for electric vehicles includes a base. A connecting platform is fixedly installed on the upper left side of the base. A moving mechanism is fixedly installed on the upper left side of the connecting platform. A guide groove is formed in the middle of the upper part of the connecting platform. Sliding grooves are formed at the front and rear ends of the connecting platform. An assist motor is fixedly installed on the upper end of the moving mechanism. A support mechanism is fixedly installed in the middle of the upper part of the base. A rotating shaft is movably connected inside the support mechanism. A resistance ring and a ring force sensor are installed on the right side of the outer surface of the rotating shaft. A connecting plate is fixedly installed on the left end of the rotating shaft. The rotating shaft is fixedly connected to the output shaft of the assist motor through the connecting plate. A control console is fixedly installed on the upper right side of the upper part of the left end and a contact test structure is fixedly installed on the lower left end of the control console.

[0007] Preferably, the moving mechanism includes a vertical plate, an electric push rod is fixedly installed on the upper right end of the vertical plate, a moving seat is fixedly installed on the output end of the electric push rod, a guide plate is fixedly installed on the lower middle part of the moving seat, inclined plates are fixedly connected to the upper front end and the upper rear end of the moving seat, a connecting plate is fixedly connected to the end of each of the two inclined plates away from the moving seat, and a slide bar is fixedly connected to the lower part of the side of each of the two connecting plates near the moving seat.

[0008] Preferably, the lower end of the upright plate is fixedly connected to the connecting platform, the upper end of the movable seat is fixedly connected to the power assist motor by bolts, and the lower end of the movable seat does not contact the connecting platform.

[0009] By adopting the above technical solution, the movable seat is pushed by an electric push rod, which can more accurately align and connect the output shaft of the power assist motor with the rotating shaft compared to manual operation.

[0010] Preferably, the guide plate is slidably connected to the guide groove, and the two slide bars are slidably connected to the two slide grooves respectively.

[0011] By adopting the above technical solution, the guide plate slides in the guide groove and the slide bar slides in the slide groove, which plays a guiding and limiting role, ensuring that the moving seat moves along the predetermined straight direction.

[0012] Preferably, the supporting mechanism includes a support rod, with a supporting collar fixedly connected to the upper end of the support rod and a fixing plate fixedly connected to the lower end of the support rod.

[0013] Preferably, the supporting collar is located on the left side of the outer surface of the rotating shaft, and the supporting collar is interlocked and movably connected to the rotating shaft.

[0014] By adopting the above technical solution, the supporting collar can provide support for the rotating shaft, maintain its correct position and posture, and support the rotating shaft to keep it in a stable position, making it convenient for operators to align and connect the output shaft of the power assist motor to the rotating shaft through the connecting plate.

[0015] Preferably, the inner surface of the supporting collar is coated with molybdenum disulfide, and the lower end of the fixing plate is fixedly connected to the base.

[0016] By adopting the above technical solution, molybdenum disulfide has an extremely low coefficient of friction, which can reduce the frictional resistance between the rotating shaft and the supporting collar.

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

[0018] 1. By setting up a moving mechanism, after the power assist motor is installed on the moving base, the electric push rod is activated, which pushes the moving base to the right, allowing the output shaft of the power assist motor to approach the rotating shaft and connect through the connecting plate. The electric push rod can precisely control the moving distance and speed of the moving base. Compared with manual operation, it can more accurately align and connect the output shaft of the power assist motor with the rotating shaft. The guide plate slides in the guide groove and the slide bar slides in the slide groove, playing a guiding and limiting role, ensuring that the moving base moves along the predetermined straight direction, further improving the accuracy of position control, ensuring the accuracy of connection, and benefiting the accuracy of subsequent testing. Moreover, the way the electric push rod pushes the moving base is relatively quick, which can quickly realize the approach and connection of the output shaft of the power assist motor with the rotating shaft, saving manual operation time. Especially in the case of multiple connection operations, it can reduce operation time and improve overall testing efficiency.

[0019] 2. By setting up a support mechanism, before the output end of the assist motor is connected to the rotating shaft, the right end of the rotating shaft is connected to the left side wall of the control panel via a bearing. The left side of the rotating shaft can be supported by a support collar. If the rotating shaft is not properly supported when not connected to the output shaft of the assist motor, it may deform due to its own weight. The support collar provides support for the rotating shaft, maintaining its correct position and posture. Supporting the rotating shaft keeps it in a stable position, making it convenient for operators to align and connect the output shaft of the assist motor to the rotating shaft via the connecting plate. A stable rotating shaft helps improve the accuracy and efficiency of installation, reduces installation difficulties caused by shaking or displacement of the rotating shaft during installation, reduces installation errors, makes the connection more accurate and reliable, and ensures the accuracy of subsequent tests. In addition, the inner surface of the support collar is coated with molybdenum disulfide. Molybdenum disulfide has an extremely low coefficient of friction, which reduces the frictional resistance between the rotating shaft and the support collar. This means that the rotating shaft rotates more smoothly, requires less driving force, reduces energy loss, and improves the efficiency of the entire system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an EPS testing experimental device for electric vehicles according to this utility model;

[0021] Figure 2This is a schematic diagram of the planar structure of an EPS testing experimental device for electric vehicles according to the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the moving mechanism of the electric vehicle EPS testing experimental device of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the support mechanism of the EPS testing experimental device for electric vehicles according to this utility model.

[0024] In the diagram: 1. Base; 2. Connecting platform; 3. Moving mechanism; 31. Vertical plate; 32. Electric push rod; 33. Moving seat; 34. Guide plate; 35. Inclined plate; 36. Connecting plate; 37. Sliding bar; 4. Guide groove; 5. Slide groove; 6. Power assist motor; 7. Support mechanism; 71. Support rod; 72. Support collar; 73. Fixed plate; 8. Rotating shaft; 9. Resistance ring; 10. Ring force sensor; 11. Connecting plate; 12. Control console; 13. Contact test structure. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1-4 This utility model provides a technical solution:

[0029] An EPS (Electric Power Surge) testing experimental device for electric vehicles includes a base 1. A connecting platform 2 is fixedly installed on the upper left side of the base 1. A moving mechanism 3 is fixedly installed on the upper left side of the connecting platform 2. A guide groove 4 is provided in the middle of the upper end of the connecting platform 2. Sliding grooves 5 are provided at both the front and rear ends of the connecting platform 2. An assist motor 6 is fixedly installed on the upper end of the moving mechanism 3. A support mechanism 7 is fixedly installed in the middle of the upper end of the base 1. A rotating shaft 8 is movably connected inside the support mechanism 7. A resistance ring 9 and a ring force sensor 10 are installed on the right side of the outer surface of the rotating shaft 8. A connecting plate 11 is fixedly installed on the left end of the rotating shaft 8. The rotating shaft 8 is fixedly connected to the output shaft of the assist motor 6 through the connecting plate 11. A control console 12 is fixedly installed on the upper right side of the base 1. Contact test structures 13 are fixedly installed on the upper left and lower left sides of the control console 12.

[0030] In this embodiment, the moving mechanism 3 includes a vertical plate 31. An electric push rod 32 is fixedly installed on the upper right end of the vertical plate 31. A moving seat 33 is fixedly installed on the output end of the electric push rod 32. A guide plate 34 is fixedly installed on the middle of the lower end of the moving seat 33. Inclined plates 35 are fixedly connected to the upper front end and the upper rear end of the moving seat 33. A connecting plate 36 is fixedly connected to the end of the two inclined plates 35 away from the moving seat 33. A slide bar 37 is fixedly connected to the lower side of the two connecting plates 36 near the moving seat 33. The lower end of the vertical plate 31 is fixedly connected to the connecting platform 2. The upper end of the moving seat 33 is fixedly connected to the power assist motor 6 by bolts. The lower end of the moving seat 33 does not contact the connecting platform 2. The guide plate 34 is slidably connected to the guide groove 4. The two slide bars 37 are slidably connected to the two slide grooves 5 respectively.

[0031] With the above scheme: after the power assist motor 6 is installed on the movable seat 33, the electric push rod 32 is activated, and the electric push rod 32 pushes the movable seat 33 to move to the right, so that the output shaft of the power assist motor 6 can approach the rotating shaft 8 and be connected through the connecting plate 11. During the movement of the movable seat 33, the guide plate 34 slides in the guide groove 4 and the slide bar 37 slides in the slide groove 5, which plays a guiding and limiting role, ensuring that the movable seat 33 moves along the predetermined straight direction.

[0032] In this embodiment, the support mechanism 7 includes a support rod 71, a support collar 72 is fixedly connected to the upper end of the support rod 71, and a fixing plate 73 is fixedly connected to the lower end of the support rod 71. The support collar 72 is located on the left side of the outer surface of the rotating shaft 8, and the support collar 72 is interlocked and movably connected to the rotating shaft 8. The inner surface of the support collar 72 is provided with a molybdenum disulfide coating. The lower end of the fixing plate 73 is fixedly connected to the base 1.

[0033] Through the above solution: the supporting collar 72 can provide support for the rotating shaft 8, maintain its correct position and posture, and support the rotating shaft 8 to keep it in a stable position, making it convenient for the operator to align and connect the output shaft of the power assist motor 6 to the rotating shaft 8 through the connecting plate 11. In addition, the inner surface of the supporting collar 72 is coated with molybdenum disulfide, which has an extremely low coefficient of friction, thus reducing the frictional resistance between the rotating shaft 8 and the supporting collar 72.

[0034] It should be noted that this utility model is an experimental device for testing EPS (Electric Power Supplies) in electric vehicles. During use, after the power assist motor 6 is installed on the movable seat 33, the electric push rod 32 is activated. The electric push rod 32 pushes the movable seat 33 to the right. During this process, the output shaft of the power assist motor 6 gradually approaches the rotating shaft 8, and finally, the connection is achieved through the connecting plate 11. The electric push rod 32 has the ability to precisely control the moving distance and speed of the movable seat 33. Compared with manual operation, it can more accurately align the output shaft of the power assist motor 6 with the rotating shaft 8 and complete the connection. During the movement of the movable seat 33... During this process, the guide plate 34 slides within the guide groove 4, while the slide bar 37 slides within the slide groove 5. These two elements work together to guide and limit movement, ensuring that the movable seat 33 moves along a predetermined straight line. This further improves the accuracy of position control and guarantees the accuracy of the connection, which is crucial for the precision of subsequent testing. Furthermore, the electric push rod 32 quickly pushes the movable seat 33, rapidly bringing the output shaft of the power assist motor 6 closer to and connecting with the rotating shaft 8, saving manual operation time. This advantage is particularly pronounced when multiple connection operations are required, reducing the need for manual intervention. This reduces operation time and improves overall testing efficiency. Furthermore, when the output end of the assist motor 6 is not yet connected to the rotating shaft 8, the right end of the rotating shaft 8 is connected to the left side wall of the control console 12 via a bearing, while its left side is supported by the supporting collar 72. If the rotating shaft 8 lacks proper support when not connected to the output shaft of the assist motor 6, it may deform due to its own weight. The supporting collar 72 provides necessary support for the rotating shaft 8, maintaining its correct position and posture. Supporting the rotating shaft 8 ensures its stability, making it easier for the operator to connect the output shaft of the assist motor 6 to the rotating shaft via the connecting plate 11. The rotating shaft 8 is aligned and connected. A stable rotating shaft 8 helps improve the accuracy and efficiency of installation, reduces installation difficulties caused by shaking or displacement of the rotating shaft 8, reduces installation errors, and makes the connection more accurate and reliable, thereby ensuring the accuracy of subsequent testing experiments. It is worth mentioning that the inner surface of the supporting collar 72 is coated with molybdenum disulfide. Molybdenum disulfide has an extremely low coefficient of friction, which can reduce the frictional resistance between the rotating shaft 8 and the supporting collar 72. This means that the rotating shaft 8 will rotate more smoothly and require less driving force, which can reduce energy loss and improve the efficiency of the entire system.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle EPS test experiment device, comprising a base (1), characterized in that: The left part of the upper end of the base (1) is fixedly installed with a connecting table (2), the left part of the upper end of the connecting table (2) is fixedly installed with a moving mechanism (3), the middle part of the upper end of the connecting table (2) is provided with a guide groove (4), the front end and the rear end of the connecting table (2) are provided with sliding grooves (5), the upper end of the moving mechanism (3) is fixedly installed with a power-assisted motor (6), the middle part of the upper end of the base (1) is fixedly installed with a supporting mechanism (7), the inside of the supporting mechanism (7) is movably connected with a rotating shaft (8), the right part of the outer surface of the rotating shaft (8) is installed with a resistance ring (9) and a ring force sensor (10), the left end of the rotating shaft (8) is fixedly installed with a connecting disc (11), the rotating shaft (8) is fixedly connected with the output shaft of the power-assisted motor (6) through the connecting disc (11), and the right part of the upper end of the base (1) is fixedly installed with a control table (12). The upper left end and the lower left end of the control table (12) are fixedly installed with a contact test structure (13). The moving mechanism (3) comprises a vertical plate (31), the upper right end of the vertical plate (31) is fixedly installed with an electric push rod (32), the output end of the electric push rod (32) is fixedly installed with a moving seat (33), the middle part of the lower end of the moving seat (33) is fixedly installed with a guide plate (34), the upper front end and the upper rear end of the moving seat (33) are fixedly connected with inclined plates (35), one end, away from the moving seat (33), of the two inclined plates (35) is fixedly connected with a connecting plate (36), and the lower part of one side, close to the moving seat (33), of the two connecting plates (36) is fixedly connected with a sliding strip (37).

2. The electric vehicle EPS test device according to claim 1, characterized in that: The lower end of the vertical plate (31) is fixedly connected with the connecting table (2), the upper end of the moving seat (33) is fixedly connected with the power-assisted motor (6) through bolts, and the lower end of the moving seat (33) is not in contact with the connecting table (2).

3. The EPS test device for electric vehicles according to claim 1, characterized in that: The guide plate (34) is slidably connected with the guide groove (4), and the two sliding strips (37) are slidably connected with the two sliding grooves (5), respectively.

4. The electric vehicle EPS test device of claim 1, wherein: The supporting mechanism (7) comprises a supporting rod (71), the upper end of the supporting rod (71) is fixedly connected with a supporting sleeve ring (72), and the lower end of the supporting rod (71) is fixedly connected with a fixed plate (73).

5. The EPS test device for electric vehicles according to claim 4, characterized in that: The supporting sleeve ring (72) is located at the left part of the outer surface of the rotating shaft (8), and the supporting sleeve ring (72) is movably connected with the rotating shaft (8).

6. The EPS test device for electric vehicles according to claim 4, characterized in that: The inner surface of the supporting sleeve ring (72) is provided with a molybdenum disulfide coating, and the lower end of the fixed plate (73) is fixedly connected with the base (1).

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