A new energy automobile high-temperature component vibration testing device and testing method

Abstract

The application relates to the technical field of automobile part detection, and particularly discloses a new energy automobile high-temperature part vibration testing device and a testing method, the testing device comprises a valve body mounting bolt arranged on the surface of a cooling base; a cooling valve body is fixedly installed on the valve body mounting bolt; a sensor mounting hole is arranged on the top surface of the cooling valve body, liquid flow guide holes are arranged on the side surface of the cooling valve body, and the liquid flow guide holes are in communication with each other on the cooling valve body; a vibration sensor is installed in the sensor mounting hole, a rigid connecting pipe is connected to the liquid flow guide hole, a hose is connected to one end of the rigid connecting pipe, and a circulating water pump input end is connected with the output end through the rigid connecting pipe; the testing method is applied to the testing device, and the method comprises collecting vibration data of high-temperature parts in different gears of the automobile in real time. The sensor testing data accuracy is ensured, the device is simple to install, occupies small space and is easy to arrange, the real-time vibration signal of the high-temperature part measured through the method is more accurate, and the testing process is simpler.

Description

Technical Field

[0001] This invention relates to the field of automotive component testing technology, and in particular to a vibration testing device and method for high-temperature components of new energy vehicles. Background Technology

[0002] Excessive vibration of components during normal vehicle operation can cause resonance and noise inside the vehicle, and may even crack the components, leading to reliability issues. To avoid excessive vibration of these high-temperature components during operation, the conventional method is to control their vibration indirectly by controlling their modes. To obtain reasonable component modes, reliable vibration data of the components needs to be measured first. Typically, during the automotive development and design phase, sensors are placed on the components under the vehicle's operating conditions to test the vibration of the components. However, the vibration data measured by this method is under relatively ideal conditions. For a car under normal driving conditions, the temperature of components such as the engine, generator, transmission, oil pan, exhaust system, and turbocharger far exceeds 100°C. Existing ordinary vibration sensors can generally only withstand temperatures of around 100°C. If the temperature is too high, not only will the test data be inaccurate, but the vibration sensor will also be damaged.

[0003] Of course, to detect the vibration of high-temperature components during vehicle operation, related technologies also include computer modal simulation of components, bench modal testing of components, and whole-vehicle modal testing of components. Computer modal simulation of components, due to limitations in simulation accuracy, typically requires a safety factor of 1.1 to 1.2 times, and there is also a certain error between the simulation and the actual modal conditions. Bench modal testing of components, lacking the boundaries of the whole-vehicle condition, cannot represent the actual modal conditions. Furthermore, whole-vehicle modal testing of components requires a relatively large experimental operating space. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a vibration testing device and method for high-temperature components of new energy vehicles.

[0005] According to a first aspect of the present invention, a vibration testing device for high-temperature components of a new energy vehicle is provided, the testing system comprising: A cooling base, wherein a valve body mounting bolt is provided on the top surface of the cooling base; A cooling valve body is fixedly installed on a valve body mounting bolt; a sensor mounting hole is provided on the top surface of the cooling valve body, and at least two liquid guide holes are opened on the side surface of the cooling valve body, and each of the liquid guide holes is interconnected in the cooling valve body; A vibration sensor, which is fixedly installed in the sensor mounting hole; A rigid connecting pipe, which is sealed to the liquid guide hole; A flexible hose, the flexible hose being sealed to one end of the rigid connecting pipe away from the cooling valve body. A circulating water pump, wherein the input and output ends of the circulating water pump are sealed and connected by the rigid connecting pipe; According to some embodiments of the present invention, the cooling valve body is prismatic in shape, and a liquid guide hole is provided on each end face of the cooling valve body. Each cooling valve body is interconnected through the rigid connecting pipe and the flexible hose.

[0006] According to some embodiments of the present invention, a liquid retention chamber is provided in the cooling valve body at the junction of the liquid guide holes.

[0007] According to some embodiments of the present invention, a plug is also included for blocking the liquid guide hole on the cooling valve body that is not connected to a rigid connecting pipe.

[0008] According to some embodiments of the present invention, the valve body mounting bolt is disposed on the central axis of the cooling base, and the cooling base is rigidly connected to the cooling valve body.

[0009] A vibration testing method for high-temperature components of a new energy vehicle according to a second aspect of the present invention, the testing method comprising: Once the high-temperature component needs to be tested, the cooling base is welded to the corresponding test point of the high-temperature component to ensure a rigid connection between the cooling base and the high-temperature component to be tested. Based on the number of measuring points of the high-temperature components, the corresponding number of different types of cooling valve bodies is determined, and the cooling valve bodies are rigidly connected to the cooling base. The different types of cooling valve bodies include two-way cooling valve bodies, three-way cooling valve bodies, and four-way cooling valve bodies. Depending on the type of cooling valve body, a rigid connecting pipe and a plug are sealed to the liquid guide hole on the cooling valve body; The installed cooling valve body is connected to the circulating water pump tank in sequence through hoses to form an external circulating cooling system. Start the circulating water pump, install the vibration sensor in the sensor mounting hole of the cooling valve body, and collect the vibration signal of the high-temperature component based on the vibration sensor.

[0010] According to some embodiments of the present invention, determining that a high-temperature component needs to be tested, welding a cooling base to the corresponding testing point of the high-temperature component, and ensuring a rigid connection between the cooling base and the high-temperature component to be tested, includes: The components that need to be tested at high temperatures include the engine, generator, transmission, oil pan, exhaust system, and turbocharger. Based on the determined structural shape of the high-temperature component to be tested, determine the corresponding test points of the high-temperature component to be tested; Based on the corresponding test points, determine the number of cooling bases required and install the cooling bases on the corresponding test points to be tested; wherein the cooling bases are rigidly connected to the high-temperature component to be tested.

[0011] According to some embodiments of the present invention, the step of sealing the liquid guide hole on the cooling valve body with a rigid connecting pipe and a plug, depending on the type of cooling valve body, includes: Based on the number of different types of cooling valve bodies and the corresponding measurement point locations, determine the connection routes between different types of cooling valve bodies; Based on the determination of the connection routes between different types of cooling valve bodies, the number of rigid connecting pipes and plugs and the connected liquid guide holes on each cooling valve body are determined.

[0012] According to some embodiments of the present invention, starting the circulating water pump, installing the vibration sensor in the sensor mounting hole of the cooling valve body, and collecting vibration signals of the high-temperature component based on the vibration sensor includes: Start the circulating water pump, check that there are no obvious leaks at any of the joints of the external circulating cooling system, and then turn off the circulating water pump. Install the vibration sensor in the sensor mounting hole of the cooling valve body, connect the sensor to the data acquisition system using the vibration sensor signal output cable, and debug the signal; After the signal is debugged and confirmed to be correct, start the circulating water pump first, then start the vehicle, and collect the real-time vibration signals of the high-temperature components corresponding to different gears; Based on the real-time vibration signals of the high-temperature components corresponding to different gear positions, it is determined whether the vibration of the high-temperature components at different gear positions will cause problems with the overall vehicle comfort and reliability.

[0013] According to some embodiments of the present invention, the step of determining whether the vibration of the high-temperature component at different gears will cause problems with the overall vehicle comfort and reliability based on the real-time vibration signals of the high-temperature component corresponding to different gears includes: Based on the real-time vibration signals of high-temperature components at different speed ranges, the time-domain data of the real-time vibration signals across the entire speed range are windowed. The windowing function is Hanning window, and the frequency resolution is 1Hz. Then, the main order data of the high-temperature components are calculated by Fourier transform to obtain a Colormap. Based on the Colormap, analyze the data of each frequency band under each gear position to find the point with the strongest vibration signal.

[0014] The above-described technical solutions in the embodiments of this application have at least the following technical effects or advantages: A circulating cooling system is assembled by connecting a cooling base, different types of cooling valve bodies, rigid connecting pipes, hoses, and a circulating water pump. The vibration sensor is installed on the surface of the cooling valve body. The cooling base and cooling valve body form a rigid connection with the high-temperature component to be tested. The circulating water pump is started to allow the coolant to circulate in the circulating cooling system. When performing real-time vibration testing on high-temperature components of a vehicle, the circulating coolant can keep the surface temperature of the vibration sensor within 100°C, ensuring the accuracy of the sensor test data and protecting the vibration sensor. The device is also simple to install, occupies little space, and is easy to arrange.

[0015] Meanwhile, based on the vibration testing device for high-temperature components of new energy vehicles according to the embodiments of this application, a detection method is proposed. This method involves selecting test points on the high-temperature components to be tested, installing corresponding cooling valve bodies and other test parts at each test point to form a circulating cooling system, connecting the sensor to the data acquisition system using a vibration sensor signal output cable, starting the circulating water pump, and debugging the sensor. After the sensor is properly debugged, the vehicle is started, and real-time vibration signals of the high-temperature components corresponding to different gear positions are collected. Based on the collected real-time vibration signals of the high-temperature components corresponding to different gear positions, the time-domain data of the real-time vibration signals across the entire speed range are windowed. The windowing function is a Hanning window, and the frequency resolution is 1Hz. Then, Fourier transform is used to calculate the main order data of the engine and the Colormap. Based on the Colormap, the data of each frequency band under each gear position are analyzed to find the point with the maximum vibration signal. The real-time vibration signal of the high-temperature components measured by this method is more accurate, and the testing process is simpler.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the cooling valve body according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the cooling valve body according to an embodiment of the present invention; Figure 3 This is a top view of the cooling valve body according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the cooling base according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the assembled structure of the two-way cooling valve body according to an embodiment of the present invention; Figure 6 This is another structural schematic diagram of the two-way cooling valve body after assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the assembled structure of the three-way cooling valve body according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the assembled structure of the four-way cooling valve body according to an embodiment of the present invention; Figure 9 This is a vibration testing device for high-temperature components of new energy vehicles according to an embodiment of the present invention; Figure 10 This is a flowchart of a vibration testing method for high-temperature components of a new energy vehicle according to an embodiment of the present invention; Figure 11 This is a data graph after testing according to an embodiment of the present invention for a vibration testing method of high-temperature components of a new energy vehicle; Figure label: 100. Cooling valve body; 101. Liquid guide hole; 102. Sensor mounting hole; 103. Mounting threaded hole; 104. Liquid retention chamber; 200 Rigid connecting pipe; 300 Plug; 400 Vibration sensor; 500 Cooling base; 501 Valve body mounting bolt; 600 Hose; 700 Circulating water pump; Detailed Implementation The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1 Please see Figures 1 to 9 This embodiment provides a vibration testing device for high-temperature components of new energy vehicles, including: like Figure 1 As shown, the upper surface of the cooling valve body 100 is provided with a sensor mounting hole 102 for mounting and fixing the vibration sensor. The vibration sensor 400 can be fixed in the sensor mounting hole 102 by threaded connection. It should be noted that the vibration sensor 400 and the cooling valve body 100 must be rigidly connected. It is understood that the shape of the cooling valve body 100 does not necessarily have to be a rectangular column, but can also be a multi-sided prism, such as a five-sided prism or a three-sided prism. Liquid guide holes 101 are provided on each side of the cooling valve body 100. Preferably, the liquid guide holes 101 are located at the center of each side, and the liquid guide holes 101 on different sides are interconnected. The liquid guide holes 101 on different sides are located at the same height on the cooling valve body 100, and the size of the liquid guide holes 101 can be limited according to design requirements. In some implementations, such as Figure 2 As shown, a liquid retention chamber 104 is provided inside the cooling valve body 100. The liquid retention chamber 104 is connected to each liquid guide hole 101. Preferably, the shape of the liquid retention chamber 104 can be a flat rectangle. The liquid retention chamber 104 is located on the central axis inside the cooling valve body 100. The liquid retention chamber 104 is coaxial with the sensor mounting hole 102. At the same time, the top projection area of ​​the liquid retention chamber 104 should be larger than the top projection area of ​​the sensor mounting hole 102. With this configuration, when actually conducting vibration tests on high-temperature components of the vehicle, the sensor mounting hole 102 facilitates the installation and fixation of the vibration sensor 400. The rigid connection between the vibration sensor 400 and the cooling valve body 100 ensures the reliability of data measurement. Since the temperature of the high-temperature components of the vehicle can reach over 700°C during operation, and the top-view projection area of ​​the liquid retention chamber 104 should be larger than the top-view projection area of ​​the sensor mounting hole 102, the flowing condensate can absorb more heat, ensuring that the temperature of the vibration sensor 400 and the cooling valve body 100 is kept within a lower range, such as around 100°C, effectively preventing high temperature from damaging the vibration sensor 400. In some implementations, such as Figure 3 As shown, a mounting threaded hole 103 is provided on the lower surface of the cooling valve body 100. The mounting threaded hole 103 is located at the central axis of the cooling valve body 100. The mounting threaded hole 103 is used to rigidly connect with the cooling base 500. By placing the mounting threaded hole 103 at the central axis of the cooling valve body 100, the stability of the connection between the cooling valve body 100 and the cooling base 500 can be guaranteed. In some implementations, such as Figure 4As shown, a valve body mounting bolt 501 is fixedly provided on the upper surface of the cooling base 500. The valve body mounting bolt 501 is used to be threadedly connected and fixed with the mounting threaded hole 103 of the cooling valve body 100. The valve body mounting bolt 501 is located at the central axis of the cooling base 500. It should be noted that the cooling base 500 can be fixed to the surface of the high-temperature component to be tested by electric welding. The cooling base 500 is made of a high-temperature resistant rigid metal material to ensure that the cooling base 500 still maintains stability in a high-temperature environment. In some implementations, please refer to Figures 5 to 8 , Figures 5 to 8 A schematic diagram of the assembled structure of different connected cooling valve bodies is shown, such as... Figure 5 As shown, the liquid guide holes 101 on two adjacent side surfaces of the cooling valve body 100 are sealed to the rigid connecting pipe 200, and the liquid guide holes 101 on the other two side surfaces of the cooling valve body 100 are sealed to the plugs 300, so as to realize the two-way connection layout of the cooling valve body 100. It is understandable that, such as Figure 6 As shown, the liquid guide holes 101 on the two opposite side surfaces of the cooling valve body 100 are sealed to the rigid connecting pipe 200, and the liquid guide holes 101 on the other two opposite side surfaces of the cooling valve body 100 are sealed to the plugs 300, so as to realize another two-way connection layout of the cooling valve body 100. It is also understandable that, such as Figure 7 As shown, rigid connecting pipes 200 are sealed to the liquid guide holes 101 on three side surfaces of the cooling valve body 100, and a plug 300 is sealed to the liquid guide hole 101 on the other side surface of the cooling valve body 100, thereby realizing a three-way connection layout of the cooling valve body 100; as shown Figure 8 As shown, the liquid guide holes 101 on the four side surfaces of the cooling valve body 100 are sealed to the rigid connecting pipes 200 to realize the four-way connection layout of the cooling valve body 100. With this configuration, the cooling valve body 100 can have a variety of different connection methods to ensure the diversity of cooling system layout and achieve flexible settings, so as to adapt to the detection of high-temperature components in more different complex environments and obtain more reliable vibration detection data. In some implementations, such as Figure 9 As shown, Figure 9 This paper presents a vibration testing device for high-temperature components of a new energy vehicle with a well-connected layout. Multiple cooling valve bodies 100 are sealed and connected by rigid connecting pipes 200 and hoses 600 to form a circulating liquid flow loop. The liquid output end and liquid input end of the circulating water pump 700 are respectively connected to the rigid connecting pipes 200. One end of the rigid connecting pipes 200 is respectively connected to each cooling valve body 100 through hoses 600. It should be noted that the cooling valve body 100 can be reasonably distributed and set according to different high-temperature components to be tested. For example, when testing automobile engines, generators, transmissions, oil pans, exhaust systems and turbochargers, each high-temperature component needs to be reasonably set according to the shape of the component and its environment; and the number of cooling valves 100 to be selected in the layout of the cooling valve body 100 also needs to be reasonably set according to the shape of each high-temperature component and its environment. Of course, the vibration sensor 400 installed on each cooling valve body 100 is connected to the data acquisition system via a vibration sensor signal output cable so that the acquired data can be transmitted to the terminal device. The above-mentioned cooling base 500, different types of cooling valve bodies 100, rigid connecting pipe 200, hose 600 and circulating water pump 700 are assembled and connected to form a circulating cooling system. The vibration sensor 400 is installed on the surface of the cooling valve body 100. The cooling base 500 and the cooling valve body 100 form a rigid connection with the high-temperature component to be tested. The circulating water pump 700 is started to make the coolant circulate in the circulating cooling system. When the high-temperature component of the vehicle is subjected to real-time vibration test, the circulating liquid in the circulating cooling system can keep the surface temperature of the vibration sensor within 100°C, ensuring the accuracy of the sensor test data, protecting the vibration sensor, and the device is simple to install, occupies little space and is easy to arrange.

[0022] Example 2 Please see Figures 10 to 11 This embodiment provides a vibration testing method for high-temperature components of new energy vehicles, including: In step S100, the high-temperature component to be tested is determined, and the cooling base is welded to the corresponding test point of the high-temperature component to ensure that the cooling base is rigidly connected to the high-temperature component to be tested. In this step, the high-temperature components to be tested are identified, including engines, generators, transmissions, oil pans, exhaust systems, and turbochargers. It should be noted that this process requires determining the spatial location and external shape of the high-temperature component to be tested. Based on the spatial location and external shape of the component, the corresponding testing points are determined. Based on the corresponding testing points, the number of cooling bases required is determined, and the cooling bases are installed on the corresponding testing points. The cooling bases are rigidly connected to the high-temperature component to be tested. The cooling bases can be fixed to the outer surface of the high-temperature component to be tested via electric welding to ensure a rigid connection between the cooling bases and the component. In step S200, based on the number of measuring points of the high-temperature component, the corresponding number of different types of cooling valve bodies is determined, and the cooling valve bodies are rigidly connected to the cooling base. The different types of cooling valve bodies include two-way cooling valve bodies, three-way cooling valve bodies, and four-way cooling valve bodies. In this step, in order to obtain vibration data of high-temperature components more accurately, it is necessary to determine the number of different types of cooling valves. Specifically, it is necessary to determine whether the cooling valve at each corresponding measuring point is a two-way cooling valve, a three-way cooling valve, or a four-way cooling valve; at the same time, it is also necessary to determine the layout of the connecting hoses between each cooling valve. In step S300, depending on the type of cooling valve body, a rigid connecting pipe and a plug are sealed to the liquid guide hole on the cooling valve body; In this step, the connection routes between different types of cooling valve bodies are determined according to the number of different types of cooling valve bodies and the corresponding measuring point positions. Based on the determined connection routes between different types of cooling valve bodies, the number of rigid connecting pipes and plugs on each cooling valve body and the connected liquid guide holes are determined. This step can ensure better condensate return arrangement to achieve better cooling effect. In step S400, the installed cooling valve body is sequentially connected to the circulating water pump tank via a hose to assemble an external circulating cooling system. In this step, it should be noted that the liquid guide hole of the cooling valve body is first sealed by a rigid connecting pipe, and then a hose is connected to one end of the rigid connecting pipe. It should be noted that the rigid connecting pipe ensures the sealing of the connection of each component, and the hose is a high temperature resistant hose. In step S500, the circulating water pump is started, and the vibration sensor is installed in the sensor mounting hole of the cooling valve body to collect the vibration signal of the high-temperature component.

[0023] In this step, at the beginning of the vibration detection experiment, the circulating water pump is started. After checking that there is no obvious leakage at any of the joints of the external circulating cooling system, the circulating water pump is turned off. Then, the vibration sensor is installed in the sensor mounting hole of the cooling valve body. The sensor is connected to the data acquisition system using the vibration sensor signal output cable, and the signal is adjusted. After the signal is adjusted to be correct, the circulating water pump is started first, and then the vehicle is started. Real-time vibration signals of high-temperature components corresponding to different gears are collected. Based on the collected real-time vibration signals of high-temperature components corresponding to different gears, it is determined whether the vibration of the high-temperature components at different gears will cause problems with the overall vehicle comfort and reliability.

[0024] Preferably, based on the real-time vibration signals of high-temperature components corresponding to different gears, the time-domain data of the real-time vibration signals across the entire speed range are windowed. The windowing function is a Hanning window, and the frequency resolution is 1Hz. Then, the main order data of the engine, such as OA, 2nd order, and 4th order, are calculated by Fourier transform to obtain a Colormap. Based on the Colormap, the data of each frequency band under each gear state are analyzed to find the point with the maximum vibration signal.

[0025] It should be noted that in this step, the data read by the vibration sensor is processed by a terminal device with information processing capabilities, such as a computer. The computer has corresponding vibration signal processing software installed to obtain the point of maximum vibration signal. It should be understood that, in order to ensure the reliability of the test results, it is necessary to collect vibration data of high-temperature components of the vehicle when it is running in different gears, such as... Figure 10 As shown, Figure 10 The data shows the vibration of high-temperature components measured at different speeds, with the points circled within the rectangles indicating the points with the strongest vibration signals. The above method involves selecting test points on the high-temperature components to be tested, installing corresponding cooling valve bodies and other test parts at each test point to form a circulating cooling system, connecting the sensor to the data acquisition system using a vibration sensor signal output cable, starting the circulating water pump, and debugging the sensor. After the sensor is debugged, the vehicle is started, and real-time vibration signals of the high-temperature components corresponding to different gears are collected. Based on the collected real-time vibration signals of the high-temperature components corresponding to different gears, the time-domain data of the real-time vibration signals across the entire speed range are windowed. The Hanning window is selected as the windowing function, and the frequency resolution is set to 1Hz. Then, the main order data of the engine are calculated by Fourier transform to obtain a Colormap. Based on the Colormap, the data of each frequency band under each gear state are analyzed to find the point with the maximum vibration signal. The real-time vibration signal of the high-temperature components measured by this method is more accurate, and the testing process is simpler.

[0026] Accordingly, this embodiment of the invention also provides a storage medium storing instructions that, when run on a computer, cause the computer to perform vibration data processing of the vibration sensor described above.

[0027] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0028] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0029] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes. In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0030] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0031] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, it may include a series of steps or units, or optionally, steps or units not listed, or other steps or units inherent to these processes, methods, products, or devices.

[0032] The accompanying drawings show only the portions relevant to this application, not all of them. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations may be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process may correspond to a method, function, procedure, subroutine, subprogram, etc.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 invention 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 the invention.

[0034] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0035] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibration testing method for high-temperature components of new energy vehicles, characterized in that, The testing method is implemented using a vibration testing device for high-temperature components of new energy vehicles. The testing device includes a cooling base, a cooling valve body, a vibration sensor, a rigid connecting pipe, a flexible hose, and a circulating water pump. A valve body mounting bolt is provided on the top surface of the cooling base. The cooling valve body is fixedly mounted on the valve body mounting bolt. A sensor mounting hole is provided on the top surface of the cooling valve body, and at least two liquid guide holes are opened on the side surface of the cooling valve body, each of which is interconnected inside the cooling valve body. The vibration sensor is fixedly mounted in the sensor mounting hole. The rigid connecting pipe is sealed and connected to the liquid guide holes. The flexible hose is sealed and connected to one end of the rigid connecting pipe away from the cooling valve body. The input and output ends of the circulating water pump are respectively sealed and connected to the rigid connecting pipe. The testing method includes: Identify the high-temperature component to be tested, and weld the cooling base to the corresponding test point of the high-temperature component to ensure a rigid connection between the cooling base and the high-temperature component to be tested. Based on the number of measuring points of the high-temperature components, the corresponding number of different types of cooling valve bodies is determined, and the cooling valve bodies are rigidly connected to the cooling base. The different types of cooling valve bodies include two-way cooling valve bodies, three-way cooling valve bodies, and four-way cooling valve bodies. Depending on the type of cooling valve body, a rigid connecting pipe and a plug are sealed to the liquid guide hole on the cooling valve body; The installed cooling valve body is connected to the circulating water pump tank in sequence through hoses to form an external circulating cooling system. The vibration sensor is installed in the sensor mounting hole of the cooling valve body. The circulating water pump is started, and the vibration signal of the high-temperature component is collected by the vibration sensor. Specifically, this includes: starting the circulating water pump, checking that there is no obvious leakage at any joint of the external circulating cooling system, and then turning off the circulating water pump; installing the vibration sensor in the sensor mounting hole of the cooling valve body, connecting the vibration sensor to the data acquisition system with the vibration sensor signal output cable, and debugging the signal; after the signal is debugged correctly, starting the circulating water pump first, then starting the vehicle, and collecting real-time vibration signals of the high-temperature component corresponding to different gears; based on the collected real-time vibration signals of the high-temperature component corresponding to different gears, determining whether the vibration of the high-temperature component at different gears will cause problems with the overall vehicle comfort and reliability, wherein, based on the collected real-time vibration signals of the high-temperature component corresponding to different gears, the time-domain data of the real-time vibration signal across the entire speed range is windowed, the windowing function is selected as the Hanning window, the frequency resolution is selected as 1Hz, and then the main order data of the high-temperature component is calculated by Fourier transform to obtain a Colormap; based on the Colormap, the data of each frequency band under each gear state are analyzed to find the point with the maximum vibration signal.

2. The vibration testing method for high-temperature components of new energy vehicles according to claim 1, characterized in that, The cooling valve body is prismatic in shape, and liquid guide holes are provided on each end face of the cooling valve body. Each cooling valve body is interconnected through the rigid connecting pipe and the flexible hose.

3. The vibration testing method for high-temperature components of new energy vehicles according to claim 2, characterized in that, A liquid retention chamber is provided in the cooling valve body at the junction of the liquid guide hole.

4. The vibration testing method for high-temperature components of new energy vehicles according to claim 1, characterized in that, It also includes a plug for blocking the liquid guide hole on the cooling valve body that is not connected to a rigid connecting pipe.

5. The vibration testing method for high-temperature components of new energy vehicles according to claim 1, characterized in that, The valve body mounting bolt is located on the central axis of the cooling base, and the cooling base is rigidly connected to the cooling valve body through the valve body mounting bolt.

6. The vibration testing method for high-temperature components of new energy vehicles according to claim 1, characterized in that, The process of determining the required high-temperature component for testing and welding the cooling base to the corresponding testing point of the high-temperature component to ensure a rigid connection between the cooling base and the high-temperature component under test includes: Identify the high-temperature components that need to be tested, including the engine, generator, transmission, oil pan, exhaust system, and turbocharger; Based on the determined structural shape of the high-temperature component to be tested, determine the corresponding test points of the high-temperature component to be tested; Based on the corresponding test points, determine the number of cooling bases required and install the cooling bases on the corresponding test points to be tested; wherein the cooling bases are rigidly connected to the high-temperature component to be tested.

7. The vibration testing method for high-temperature components of new energy vehicles according to claim 1, characterized in that, The method, which is configured according to different types of cooling valve bodies, includes sealing the liquid guide hole on the cooling valve body with a rigid connecting pipe and a plug, comprising: Based on the number of different types of cooling valve bodies and the corresponding measurement point locations, determine the connection routes between different types of cooling valve bodies; Based on the determination of the communication routes between different types of cooling valve bodies, the number of rigid connecting pipes and plugs and the connected liquid guide holes on each cooling valve body are determined.

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