Electric vehicle vibration measurement equipment and vibration evaluation system thereof

Abstract

The utility model relates to the technical field of electric vehicle production, and provides electric vehicle vibration measuring equipment and a vibration evaluation system thereof, the electric vehicle vibration measuring equipment comprises a fixing tool and a vibration measuring instrument, a probe of the vibration measuring instrument is connected to the fixing tool, and a body of the vibration measuring instrument is fixed to an instrument panel of an electric vehicle; the fixing tool is installed on a left handlebar of the electric vehicle. The fixing position of the vibration measuring instrument of the vibration measuring equipment can obtain reliable parameters which more accurately reflect the perception experience of a driver, and the fixing mode of the vibration measuring instrument does not affect normal driving of the driver; the utility model further discloses an electric vehicle vibration evaluation system, the system digitizes sensory experience according to parameters obtained by the vibration meter in combination with evaluation standards, then enterprises accumulate data, the data serves as data support in the aspects of upgrading of new and old products and the like, and the system has better guiding significance in upgrading and updating of the whole vehicle.

Description

Technical Field

[0001] This application relates to the field of electric vehicle manufacturing technology, specifically to an electric vehicle vibration measurement device and its vibration evaluation system. Background Technology

[0002] The number of electric two-wheelers in China is expected to exceed 500 million, making a significant contribution to reducing global carbon emissions and environmental protection annually. Without electric two-wheelers, cities would experience more severe traffic congestion and pollution. Electric two-wheelers are not only a necessity but also a necessity for people's livelihoods, playing an irreplaceable role, especially in short-distance travel.

[0003] Currently, users have higher requirements for the overall comfort of bicycles during riding. The initial need for basic transportation—just functionality—has gradually shifted to a greater demand for riding comfort and overall experience. Riding comfort is mainly experienced in terms of vibration, handling, and weight. Most manufacturers are increasingly emphasizing vibration testing of shock absorbers and frames to improve overall comfort. However, the evaluation of the entire bicycle still largely relies on the sensory evaluations of professional riders.

[0004] CN219284622U discloses an electric bicycle frame vibration testing device, including a support assembly, a frame assembly, a vibration assembly, a clamping assembly, and a front clamping assembly. The frame assembly is disposed on top of the support assembly, the clamping assembly is fixed on top of the vibration assembly, and the front clamping assembly is slidably connected to the top of the support assembly. The vibration assembly includes a motor, which is fixed to the bottom of the support assembly. A gear one is fixed to the output shaft end of the motor, a gear two is meshed on one side of the gear one, a rotating shaft is fixed inside the gear two, and a rocker arm is rotatably connected to one side of the rotating shaft.

[0005] The aforementioned patent document uses clamping and front clamping components to fix the frame assembly to the support platform. Then, it uses two sets of vibration components to raise and lower support plates one and two asynchronously, simulating the situation of a vehicle traveling on a bumpy road. Finally, a load cell applies weight to the frame, simulating the situation of a person riding an electric bicycle on the road. Clearly, when evaluating the overall comfort of the vehicle, because it only tests the frame for vibration, it can only obtain data such as frame strength and stiffness. However, for the entire vehicle, due to the complex structure of an electric bicycle, especially the significant impact of shock absorbers on vibration, the aforementioned patent document cannot provide a complete result on vibration comfort.

[0006] Based on this, the technical problem to be solved in this application is: how to solve the problem of vibration testing and comfort evaluation of electric vehicles. Utility Model Content

[0007] To address the aforementioned technical issues, this application provides an electric vehicle vibration measurement device. The fixed position of the vibration meter in this device can obtain more accurate and reliable parameters reflecting the driver's sensory experience, and the fixing method of the vibration meter will not affect the driver's normal driving. This application also discloses an electric vehicle vibration evaluation system. This system digitizes the sensory experience data based on the parameters obtained from the vibration meter and evaluation standards. Enterprises can then accumulate this data to provide data support for upgrading new and old products, and provide better guidance for the upgrading and replacement of the entire vehicle.

[0008] The technical solution of this application is:

[0009] An electric vehicle vibration measurement device includes a fixing fixture and a vibration meter. The probe of the vibration meter is connected to the fixing fixture, and the body of the vibration meter is fixed to the dashboard of the electric vehicle. The fixing fixture is installed on the left handlebar of the electric vehicle.

[0010] In the above-mentioned electric vehicle vibration evaluation system, the fixing fixture includes a first clamping block and a second clamping block that are detachably connected; the first clamping block is provided with a mounting part for fixing the probe of the vibration meter; the first clamping block and the second clamping block are connected to form a slot that matches the shape of the electric vehicle's handlebars.

[0011] In the above-mentioned electric vehicle vibration evaluation system, the first clamping block and the second clamping block are provided with corresponding screw holes and are detachably connected by plug-in bolts; the mounting part is a threaded column.

[0012] In addition, this application also discloses an electric vehicle vibration evaluation system, based on the above-mentioned electric vehicle vibration measurement device, including:

[0013] Detection unit: used to measure instantaneous speed, amplitude, and frequency of vibration during riding; the detection unit includes a GPS speedometer and the aforementioned vibration meter; the GPS speedometer is fixed to the dashboard of the electric vehicle;

[0014] Data processing unit: used to convert the speed and vibration measured by the detection unit into visual parameters;

[0015] Evaluation unit: Used to compare preset standard parameters and visual parameters to evaluate the riding comfort of electric vehicles.

[0016] The electric vehicle vibration evaluation system described above also includes a tire pressure unit for detecting and displaying tire pressure.

[0017] In the aforementioned electric vehicle vibration evaluation system, the tire pressure unit includes a first tire pressure monitoring device externally mounted on the front wheel of the electric vehicle and a second tire pressure monitoring device mounted on the rear wheel.

[0018] One of the above-mentioned technical solutions in this application has at least one of the following advantages or beneficial effects:

[0019] This application mounts the probe of the testing instrument on the left handlebar of the electric vehicle using a fixing fixture. This design does not affect the normal use of the vehicle. Since the left handlebar is located at the top of the vehicle, the vibration transmitted to it has already been filtered by the electric vehicle's shock absorber and frame. Furthermore, during the ride, the driver's arm directly contacts the handlebar, allowing them to intuitively feel whether the vibration is comfortable. Therefore, mounting the fixing fixture on the left handlebar of the electric vehicle is a better design.

[0020] Furthermore, the electric vehicle vibration evaluation system of this application can digitize sensory experience data based on the parameters obtained from the vibration meter and the evaluation standards. Enterprises can then accumulate this data to provide data support for upgrading new and old products, and provide better guidance for the upgrading and replacement of the entire vehicle. Attached Figure Description

[0021] Figure 1 This is a simplified installation diagram of the electric vehicle vibration measurement device according to Embodiment 1 of this application;

[0022] Figure 2 This is a schematic diagram of the fixing fixture structure of the electric vehicle vibration measurement device according to Embodiment 1 of this application;

[0023] Figure 3 This is an example graph of the vibration meter curve in the electric vehicle vibration evaluation system of Embodiment 1 of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Fixture; 11. First clamping block; 12. Second clamping block; 13. Mounting part; 2. Vibration meter; a. Slot; b. Screw hole. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] Example 1

[0028] refer to Figures 1-3 An electric vehicle vibration measurement device includes a fixing fixture 1 and a vibration meter 2. The probe of the vibration meter 2 is connected to the fixing fixture 1, and the body of the vibration meter 2 is fixed to the dashboard of the electric vehicle. The fixing fixture 1 is installed on the left handlebar of the electric vehicle.

[0029] Specifically, the fixing fixture 1 includes a first clamping block 11 and a second clamping block 12 that are detachably connected; the first clamping block 11 is provided with a mounting part 13 for fixing the probe of the vibration meter 2; the first clamping block 11 and the second clamping block 12 are connected to form a slot a that matches the shape of the handlebar of the electric vehicle.

[0030] More specifically, the first clamping block 11 and the second clamping block 12 are provided with corresponding screw holes b and are detachably connected by plug-in bolts; the mounting part 13 is a threaded post.

[0031] In this embodiment, the probe of the detector is installed on the left handlebar of the electric vehicle using the fixing fixture 1. This design does not affect the normal use of the driver. Since the left handlebar is located at the top of the vehicle, the vibration transmitted to this location has already been filtered by the electric vehicle's shock absorber and frame. Furthermore, during driving, the driver's arm directly contacts the handlebar, making it the most intuitive position for the driver to evaluate whether the vibration is comfortable. Therefore, installing the fixing fixture 1 on the left handlebar of the electric vehicle is a better design.

[0032] It should be noted that the vibration meter 2 used in this embodiment is a digital vibration meter, specifically model UNI-TUT315A.

[0033] Furthermore, this embodiment also discloses an electric vehicle vibration evaluation system, based on the aforementioned electric vehicle vibration measurement device, comprising:

[0034] Detection unit: used to measure instantaneous speed, amplitude, and frequency of vibration during riding; the detection unit includes a GPS speedometer and the aforementioned vibration meter 2; the GPS speedometer is fixed to the dashboard of the electric vehicle;

[0035] Data processing unit: used to convert the speed and vibration measured by the detection unit into visual parameters;

[0036] Evaluation unit: Used to compare preset standard parameters and visual parameters to evaluate the riding comfort of electric vehicles;

[0037] Tire pressure monitoring unit: used to detect and display tire pressure; the tire pressure monitoring unit includes a first tire pressure monitoring device externally mounted on the front wheel of the electric vehicle and a second tire pressure monitoring device mounted on the rear wheel. It should be noted that GPS speedometers and tire pressure monitoring devices are technologies well-known to those skilled in the art, therefore, they will not be described in detail in this embodiment.

[0038] In the above design, the GPS speedometer serves to keep the test personnel at a constant speed, while the data from the vibration meter 2 is immediately transferred to the data processing unit after each test to generate curves showing the amplitude and frequency. Figure 3Meanwhile, road testers scored the ride comfort based on various factors, including the cushioning during forward movement, cornering, the strength of the springs and damping force from low to high speeds, and braking. Engineers then combined the curves and the road testers' scores to draw conclusions and create a standard curve as a benchmark for future comfort evaluations.

[0039] Therefore, the electric vehicle vibration evaluation system in this embodiment can digitize the sensory experience data based on the parameters obtained by the vibration meter 2 and the evaluation standards. Then, through data accumulation, enterprises can use it as data support for upgrading new and old products, which has better guiding significance for the upgrading and replacement of the whole vehicle.

[0040] To establish a reliable and trustworthy database, in practical applications, professional road test personnel will drive the vehicles and standardized testing procedures will be followed. Requirements: Road test personnel must weigh between 70kg and 80kg (including the weight of one or two riders and equipment); the road must meet the national Class III highway standard; tire pressure must be 2bar to 2.5bar (depending on the tire's recommended pressure); and the vehicle speed must be maintained near the national speed limit (50±1km / h for electric motorcycles and 24±km / h for electric bicycles).

[0041] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric vehicle vibration measurement apparatus comprising a fixing tool and a vibration meter, characterized by, The probe of the vibration meter is connected to a fixing tool, and the body of the vibration meter is fixed to the instrument panel of the electric vehicle; the fixing tool is installed on the left handle of the electric vehicle; the fixing tool comprises a first clamping block and a second clamping block which are detachably connected; the first clamping block is provided with a mounting portion for fixing the probe of the vibration meter; the first clamping block and the second clamping block are connected to form a clamping groove matched with the shape of the handle of the electric vehicle.

2. The electric vehicle vibration measurement apparatus according to claim 1, characterized by The first clamping block and the second clamping block are provided with position corresponding screw holes and are detachably connected through plug-in bolts; the mounting portion is a threaded column.

3. An electric vehicle vibration evaluation system characterized by comprising: The electric vehicle vibration measurement device based on the electric vehicle vibration measurement device of claim 1 or 2 comprises: a detection unit for measuring the instantaneous speed, the amplitude and the frequency of vibration during riding; the detection unit comprises a GPS speedometer and the vibration meter of claim 1 or 2; the GPS speedometer is fixed to the instrument panel of the electric vehicle; a data processing unit for converting the speed and vibration tested by the detection unit into visual parameters; an evaluation unit for comparing the preset parameters with the visual parameters to evaluate the riding comfort of the electric vehicle.

4. The electric vehicle vibration evaluation system according to claim 3, characterized by It also comprises a tire pressure unit for detecting and displaying tire pressure.

5. The electric vehicle vibration evaluation system according to claim 4, characterized by The tire pressure unit comprises a first tire pressure monitor externally arranged on the front wheel of the electric vehicle and a second tire pressure monitor arranged on the rear wheel of the electric vehicle.

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