Front-end module design method, device, equipment and storage medium

Abstract

The present invention belongs to the field of automobile technology, and discloses a front-end module design method, device, equipment and storage medium. The present invention establishes a relevant modal table according to the target mode of the cooling module, and the cooling module assembly of the cooling module is an open frame structure; determines the initial installation position of the lower shock-absorbing structure on the front-end frame mounting lug, and the front-end frame mounting lug is a metal material; performs modal simulation according to the initial installation position, and determines the simulation result of the initial installation position; determines the target installation position of the lower shock-absorbing structure according to the simulation result and the relevant modal table. In the above manner, the design of the above-mentioned front-end module can not only improve the NVH performance of the vehicle, but also greatly improve the matching degree with the vehicle model, and can also achieve the effect of reducing vehicle weight and reducing design costs, thereby improving vehicle product performance and user experience.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a front-end module design method, device, equipment and storage medium. Background Art

[0002] In the prior art, the design structure of the front-end frame for improving vehicle performance is relatively complex, and the lower mounting point is relatively fixed, and the matching degree with the vehicle model is poor. Therefore, there is an urgent need for a front-end module design method that can take into account both vehicle performance and vehicle model matching.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a front-end module design, aiming to solve the technical problem that the design of the front-end module in the prior art cannot take into account both vehicle performance and vehicle model matching.

[0005] To achieve the above object, the present invention provides a front-end module design method, the method comprising the following steps:

[0006] Establishing a relevant mode table according to a target mode of a cooling module, wherein a cooling module assembly of the cooling module is an open frame structure;

[0007] Determining an initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material;

[0008] Performing modal simulation according to the initial installation position to determine a simulation result of the initial installation position;

[0009] The target installation position of the lower shock absorbing structure on the front end frame mounting lug is determined according to the simulation result of the initial installation position and the relevant modal table.

[0010] Optionally, performing modal simulation according to the initial installation position to determine a simulation result of the initial installation position includes:

[0011] Obtain preset design parameters of the front-end module;

[0012] Performing modal simulation according to the preset design parameters and the initial installation position to determine the simulation frequency of the target mode and the dynamic stiffness of the initial installation position;

[0013] A simulation result of the initial installation position is determined according to the simulation frequency and the dynamic stiffness.

[0014] Optionally, determining a target installation position of the lower shock absorbing structure on the front end frame mounting lug according to the simulation result and the relevant modal table includes:

[0015] Comparing the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position;

[0016] When the first comparison result is a preset comparison result, comparing the dynamic stiffness in the simulation result with a preset dynamic stiffness threshold to determine a second comparison result of the initial installation position;

[0017] The target installation position of the lower shock absorbing structure on the front end frame installation lug is determined according to the second comparison result of the initial installation position.

[0018] Optionally, comparing the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position includes:

[0019] Acquiring, according to the relevant modal table, relevant modal frequencies of vehicle body related modes, relevant modal frequencies of steering wheel related modes, relevant modal frequencies of frame bounce modes, and relevant modal frequencies of front drive motor related modes;

[0020] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the vehicle body related mode to determine the vehicle body frequency comparison result;

[0021] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the steering wheel related mode to determine the steering wheel frequency comparison result;

[0022] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the frame jumping mode to determine the frame frequency comparison result;

[0023] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the relevant mode of the front drive motor to determine the motor frequency comparison result;

[0024] A first comparison result of the initial installation position is obtained according to the motor frequency comparison result, the steering wheel frequency comparison result, the frame frequency comparison result and the body frequency comparison result.

[0025] Optionally, when the first comparison result is a preset comparison result, comparing the dynamic stiffness in the simulation result with a preset dynamic stiffness threshold value, and determining the second comparison result of the initial installation position, further comprising:

[0026] determining, according to the vehicle body frequency comparison result in the first comparison result, whether a distance between the simulation frequency and a relevant modal frequency of the vehicle body relevant mode is greater than a preset frequency threshold;

[0027] When the distance between the simulation frequency and the relevant modal frequency of the vehicle body related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the vehicle frame bounce mode is greater than a preset frequency threshold according to the vehicle frame frequency comparison result in the first comparison result;

[0028] When the distance between the simulation frequency and the modal frequency related to the frame bounce mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the modal frequency related to the steering wheel related mode is greater than a preset frequency threshold according to the steering wheel frequency comparison result in the first comparison result;

[0029] When the distance between the simulation frequency and the relevant modal frequency of the steering wheel-related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the front drive motor-related mode is greater than the preset frequency threshold according to the motor frequency comparison result in the first comparison result;

[0030] When the distance between the simulation frequency and the relevant modal frequency of the relevant mode of the front drive motor is greater than a preset frequency threshold, the first comparison result is determined to be a preset comparison result.

[0031] Optionally, determining a target installation position of the lower shock absorbing structure on the front-end frame mounting lug according to the second comparison result of the initial installation position includes:

[0032] When there are multiple initial installation positions, determining whether the second comparison result of each initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold;

[0033] When the second comparison results of each initial installation position are all that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold, the dynamic stiffness in the simulation result of each initial installation position is sorted;

[0034] A target installation position of the lower shock absorbing structure on the front end frame installation ear is determined among a plurality of initial installation positions according to the sorting result.

[0035] Optionally, establishing a relevant mode table according to the target mode of the cooling module includes:

[0036] Acquire multiple related modes corresponding to the target mode of the cooling module;

[0037] Determine the relevant modal frequency of each relevant mode;

[0038] A related mode table is established according to a plurality of related modes and related mode frequencies of each related mode.

[0039] In addition, to achieve the above-mentioned purpose, the present invention also proposes a front-end module design device, the front-end module design device comprising:

[0040] An establishing module, used for establishing a relevant mode table according to a target mode of a cooling module, wherein a cooling module assembly of the cooling module is an open frame structure;

[0041] A processing module, used to determine an initial installation position of the lower shock absorbing structure on a front frame mounting lug, wherein the front frame mounting lug is made of metal material;

[0042] A simulation module, used to perform modal simulation according to the initial installation position to determine a simulation result of the initial installation position;

[0043] The processing module is further used to determine a target installation position of the lower shock absorbing structure on the front end frame mounting lug according to the simulation result of the initial installation position and the relevant modal table.

[0044] In addition, to achieve the above-mentioned purpose, the present invention also proposes a front-end module design device, which includes: a memory, a processor, and a front-end module design program stored in the memory and executable on the processor, and the front-end module design program is configured to implement the steps of the front-end module design method described above.

[0045] In addition, to achieve the above objectives, the present invention also proposes a storage medium, on which a front-end module design program is stored, and when the front-end module design program is executed by a processor, the steps of the front-end module design method described above are implemented.

[0046] The present invention establishes a relevant modal table according to the target modal of the cooling module, wherein the cooling module assembly of the cooling module is an open frame structure; determines the initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material; performs modal simulation according to the initial installation position to determine the simulation result of the initial installation position; and determines the target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table. In the above manner, the target installation position of the lower shock absorbing structure on the front frame mounting lug is determined according to the relevant modal table and the simulation result of the initial installation position, the cooling module assembly does not have a complete closed frame structure, and the mounting lug is made of metal material. The design of the above front-end module can not only improve the NVH performance of the vehicle, but also greatly improve the matching degree with the vehicle model, and can also achieve the effect of reducing vehicle weight and reducing design costs, thereby improving vehicle product performance and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural diagram of a front-end module design device of a hardware operating environment involved in an embodiment of the present invention;

[0048] Figure 2 A schematic diagram of a flow chart of a first embodiment of a front-end module design method of the present invention;

[0049] Figure 3 A schematic diagram of the installation of a conventional front-end module according to an embodiment of a front-end module design method of the present invention;

[0050] Figure 4 A schematic diagram of front-end module installation according to an embodiment of a front-end module design method of the present invention;

[0051] Figure 5 A schematic diagram of a flow chart of a second embodiment of a front-end module design method of the present invention;

[0052] Figure 6 A schematic diagram of the installation position of an embodiment of a front-end module design method of the present invention;

[0053] Figure 7 This is a structural block diagram of the first embodiment of the front-end module design device of the present invention.

[0054] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0056] Reference Figure 1 , Figure 1A schematic diagram of the device structure for designing a front-end module of the hardware operating environment involved in the embodiment of the present invention.

[0057] like Figure 1 As shown, the front-end module design device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0058] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the front-end module design device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0059] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a front-end module design program.

[0060] exist Figure 1 In the front-end module design device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the front-end module design device of the present invention can be set in the front-end module design device, and the front-end module design device calls the front-end module design program stored in the memory 1005 through the processor 1001, and executes the front-end module design method provided by the embodiment of the present invention.

[0061] The embodiment of the present invention provides a front-end module design method, referring to Figure 2 , Figure 2 It is a flow chart of a first embodiment of a front-end module design method of the present invention.

[0062] In this embodiment, the front-end module design method includes the following steps:

[0063] Step S10: establishing a relevant mode table according to the target mode of the cooling module, wherein the cooling module assembly of the cooling module is an open frame structure.

[0064] It should be noted that the executor of this embodiment is a front-end module design device, wherein the front-end module design device has functions such as data processing, data communication and program running. The front-end module design device can be an integrated controller, a control computer and other devices, and of course it can also be other devices with similar functions, and this embodiment does not limit this.

[0065] It can be understood that in this embodiment, the front-end module is composed of a cooling module assembly, a cooling module upper shock-absorbing mounting structure, a cooling module lower shock-absorbing mounting structure, a front subframe, a front subframe mounting lug, a vehicle body longitudinal beam structure, and a connecting crossbeam on the vehicle body longitudinal beam. Compared with the traditional cooling module assembly, the cooling module assembly in this embodiment does not have a complete closed frame structure, that is, the cooling module assembly involved in this embodiment is an open frame structure. Compared with the traditional cooling module assembly, the structural weight and design cost are greatly reduced, solving the problem of heavy vehicle weight and high design cost. Figure 3 and Figure 4 As shown, Figure 3 This is the installation method of the traditional front-end module. Figure 4 This is the installation method of the front-end module of this embodiment.

[0066] In a specific implementation, the target mode of the cooling module refers to the rigid body mode of the cooling module, and the related mode table is a table constructed by obtaining corresponding information of the vehicle mode or local mode that is strongly related to the cooling module.

[0067] It should be noted that the corresponding information of the vehicle mode or local mode that is strongly correlated with the cooling module is determined to construct a related mode table. To ensure the accuracy of the table establishment, further, the related mode table is established according to the target mode of the cooling module, including: obtaining multiple related modes corresponding to the target mode of the cooling module; determining the related modal frequency of each related mode; and establishing a related modal table according to the multiple related modes and the related modal frequency of each related mode.

[0068] It can be understood that the relevant mode refers to the whole vehicle mode or local mode related to the target mode of the cooling module, and the whole vehicle mode or local mode strongly related to the cooling module is determined. The whole vehicle mode or local mode strongly related to the cooling module includes the relevant mode related to the target mode of the cooling module. At this time, the preset frequency of each relevant mode is obtained, and the preset frequency of each relevant mode is the relevant modal frequency of each relevant mode, so as to establish a relevant modal table according to each relevant mode and the relevant modal frequency of each relevant mode. In this embodiment, the relevant modes include but are not limited to the first-order vertical bending mode of the vehicle body, the first-order torsion mode of the vehicle body, the first-order lateral bending mode of the vehicle body, the first-order vertical bending mode of the steering wheel, the first-order lateral bending of the steering wheel, the up and down jumping mode of the front frame, and the rigid body mode of the front drive motor on the subframe. The modal table established according to the relevant modal frequencies of the relevant modes can be shown in Table 1. The frequencies and relevant modes involved in Table 1 are only examples.

[0069] Table 1

[0070]

[0071] Step S20: determining an initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material.

[0072] It should be noted that the lower shock-absorbing structure is the lower shock-absorbing mounting structure of the cooling module. Since the cooling module assembly does not have a frame-shaped frame enclosed by traditional plastic materials, the lower shock-absorbing mounting structure of the cooling module is designed to be directly installed on the mounting ear at the front end of the sub-frame. The mounting ear at the front end of the sub-frame is the front end frame mounting ear. In this embodiment, the front end frame mounting ear is made of metal material, and its stiffness characteristics are much greater than those of traditional plastic structures. In the vibration isolation system, it can improve the vibration isolation performance and thus better attenuate the noise and vibration of the fan. At the same time, compared with the plastic structure, it can ensure long-term non-thermal deformation and better durability.

[0073] It is understandable that an unsimulated installation position of the lower shock absorbing structure is selected on the front frame mounting lug, and the unsimulated installation position of the lower shock absorbing structure is the initial installation position, and the initial installation position may be one or more.

[0074] Step S30: performing modal simulation according to the initial installation position to determine a simulation result of the initial installation position.

[0075] It should be noted that, modal simulation is performed based on the initial installation position to determine the frequency of the target mode simulated based on the initial installation position and the dynamic stiffness of the initial installation position. In order to ensure the accuracy of the simulation, further, modal simulation is performed based on the initial installation position to determine the simulation result of the initial installation position, including: obtaining preset design parameters of the front-end module; performing modal simulation based on the preset design parameters and the initial installation position to determine the simulation frequency of the target mode and the dynamic stiffness of the initial installation position; and determining the simulation result of the initial installation position based on the simulation frequency and the dynamic stiffness.

[0076] It is understandable that the preset design parameters include but are not limited to the size information, weight information and position information of the design parts, and the modal simulation is performed based on the preset design parameters and the initial installation position of the lower shock-absorbing structure on the front frame mounting lug to determine the frequency of the target mode simulated based on the initial installation position and the dynamic stiffness of the initial installation position, which constitute the simulation result of the initial simulation position. The frequency of the target mode simulated based on the initial installation position is the simulation frequency of the target mode.

[0077] Step S40: determining a target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table.

[0078] It should be noted that a judgment is made based on the simulation results of the initial installation position, the relevant modal table and the judgment conditions of the installation position to determine whether the initial installation position meets the required conditions of the installation position, and the target installation position of the lower shock absorbing structure on the front end frame mounting lug is obtained based on the judgment result.

[0079] This embodiment establishes a relevant modal table according to the target modal of the cooling module, wherein the cooling module assembly of the cooling module is an open frame structure; determines the initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material; performs modal simulation according to the initial installation position to determine the simulation result of the initial installation position; and determines the target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table. In the above manner, the target installation position of the lower shock absorbing structure on the front frame mounting lug is determined according to the relevant modal table and the simulation result of the initial installation position, the cooling module assembly does not have a complete closed frame structure, and the mounting lug is made of metal material. The design of the above front-end module can not only improve the NVH performance of the vehicle, but also greatly improve the matching degree with the vehicle model, and can also achieve the effect of reducing vehicle weight and reducing design costs, thereby improving vehicle product performance and user experience.

[0080] refer to Figure 5 , Figure 5 It is a flow chart of a second embodiment of a front-end module design method of the present invention.

[0081] Based on the first embodiment described above, the front-end module design method of this embodiment includes, in step S40:

[0082] Step S41: comparing the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position.

[0083] It should be noted that, since the relevant modal table includes multiple relevant modes, it is necessary to compare the simulation frequency of the target mode contained in the simulation result with the relevant modal frequency of each relevant mode one by one to determine multiple frequency comparison results, and the multiple frequency comparison results constitute the first comparison result.

[0084] It can be understood that in order to ensure the accuracy of the first comparison result, further, the simulation frequency in the simulation result is compared with the relevant modal frequency of each relevant mode in the relevant modal table to determine the first comparison result of the initial installation position, including: obtaining the relevant modal frequency of the body-related mode, the relevant modal frequency of the steering wheel-related mode, the relevant modal frequency of the frame bounce mode and the relevant modal frequency of the front drive motor-related mode according to the relevant modal table; comparing the simulation frequency in the simulation result with the relevant modal frequency of the body-related mode to determine the body frequency comparison result ; Compare the simulation frequency in the simulation result with the relevant modal frequency of the steering wheel-related mode to determine the steering wheel frequency comparison result; Compare the simulation frequency in the simulation result with the relevant modal frequency of the frame bounce mode to determine the frame frequency comparison result; Compare the simulation frequency in the simulation result with the relevant modal frequency of the front drive motor-related mode to determine the motor frequency comparison result; Obtain a first comparison result of the initial installation position according to the motor frequency comparison result, the steering wheel frequency comparison result, the frame frequency comparison result and the body frequency comparison result.

[0085] In a specific implementation, the vehicle body related modes include but are not limited to the vehicle body first-order vertical bending mode, the vehicle body first-order torsion mode and the vehicle body first-order lateral bending mode, the steering wheel related modes include but are not limited to the steering wheel first-order vertical bending and the steering wheel first-order lateral bending, the frame bounce mode refers to the up and down bounce mode of the front frame, and the front drive motor related modes include but are not limited to the front drive motor rigid body mode X, the front drive motor rigid body mode Y, the front drive motor rigid body mode Z, the front drive motor rigid body mode RX, the front drive motor rigid body mode RY, and the front drive motor rigid body mode RZ.

[0086] It should be noted that the simulation frequency in the simulation result is compared one by one with the relevant modal frequencies of multiple modes in the vehicle body related modes, and the distance between the simulation frequency and each relevant modal frequency in the vehicle body related modes is determined, thereby obtaining the vehicle body frequency comparison result; the simulation frequency in the simulation result is compared one by one with the relevant modal frequencies of multiple modes in the steering wheel related modes, and the distance between the simulation frequency and each relevant modal frequency in the steering wheel related modes is determined, thereby obtaining the steering wheel frequency comparison result; the simulation frequency in the simulation result is compared with the relevant modal frequencies of the frame mode, and the distance between the simulation frequency and the relevant modal frequency of the frame jumping mode is determined, thereby obtaining the frame frequency comparison result; the simulation frequency in the simulation result is compared one by one with the relevant modal frequencies of multiple modes in the front drive motor related modes, and the distance between the simulation frequency and each relevant modal frequency in the front drive motor related modes is determined, thereby obtaining the motor frequency comparison result.

[0087] It can be understood that the first comparison result of the initial installation position is obtained according to the motor frequency comparison result, the steering wheel frequency comparison result, the frame frequency comparison result and the body frequency comparison result.

[0088] Step S42: When the first comparison result is a preset comparison result, the dynamic stiffness in the simulation result is compared with a preset dynamic stiffness threshold to determine a second comparison result of the initial installation position.

[0089] It should be noted that the preset comparison result refers to the result that the distance between the relevant modal frequency of each relevant mode and the simulation frequency is greater than the preset frequency threshold. When the first comparison result is the preset comparison result, the dynamic stiffness in the simulation result is compared with the preset dynamic stiffness threshold to obtain the magnitude relationship between the dynamic stiffness and the preset dynamic stiffness threshold, thereby obtaining the second comparison result. In this embodiment, the preset frequency threshold is set to 2 Hz, and the preset dynamic stiffness threshold is set to 1000 N / mm. The above thresholds can also be adjusted according to actual needs, and this embodiment is not limited to this.

[0090] It can be understood that in order to ensure that the simulation frequency of the target mode simulated based on the initial installation position meets the installation requirements, further, when the first comparison result is a preset comparison result, the dynamic stiffness in the simulation result is compared with a preset dynamic stiffness threshold value, and before determining the second comparison result of the initial installation position, it also includes: determining whether the distance between the simulation frequency and the related modal frequency of the body-related mode is greater than the preset frequency threshold value according to the body frequency comparison result in the first comparison result; when the distance between the simulation frequency and the related modal frequency of the body-related mode is greater than the preset frequency threshold value, determining whether the distance between the simulation frequency and the related modal frequency of the frame jumping mode is greater than the preset frequency threshold value according to the frame frequency comparison result in the first comparison result. A frequency threshold is set; when the distance between the simulation frequency and the related modal frequency of the frame bouncing mode is greater than the preset frequency threshold, determine whether the distance between the simulation frequency and the related modal frequency of the steering wheel-related mode is greater than the preset frequency threshold according to the steering wheel frequency comparison result in the first comparison result; when the distance between the simulation frequency and the related modal frequency of the steering wheel-related mode is greater than the preset frequency threshold, determine whether the distance between the simulation frequency and the related modal frequency of the front drive motor-related mode is greater than the preset frequency threshold according to the motor frequency comparison result in the first comparison result; when the distance between the simulation frequency and the related modal frequency of the front drive motor-related mode is greater than the preset frequency threshold, determine that the first comparison result is the preset comparison result.

[0091] In a specific implementation, based on the motor frequency comparison results, steering wheel frequency comparison results, frame frequency comparison results and body frequency comparison results in the first comparison results, it is determined whether the distance between the relevant modal frequency of each relevant mode and the simulation frequency is greater than the preset frequency threshold. When the distance between the relevant modal frequency of each relevant mode and the simulation frequency is greater than the preset frequency threshold, it means that the simulation frequency of the target mode simulated based on the initial installation position meets the installation requirements. At this time, the first comparison result is the preset comparison result.

[0092] It should be noted that if the first comparison result is not the preset comparison result, it means that the distance between the relevant modal frequency of the relevant mode and the simulation frequency is less than the preset frequency threshold. At this time, the initial installation position does not meet the installation requirements, and it is necessary to find an initial installation position that meets the frequency installation requirements. Figure 6 As shown in the figure, if the initial installation position is point 01, the simulation frequency of the target mode is 25 Hz, and the distances between the relevant modal frequencies of each relevant mode are greater than the preset frequency threshold, it means that point 01 meets the frequency installation requirements.

[0093] Step S43: determining a target installation position of the lower shock absorbing structure on the front frame mounting lug according to the second comparison result of the initial installation position.

[0094] It should be noted that, when the first comparison result is a preset comparison result, the dynamic stiffness in the simulation result is compared with the preset dynamic stiffness threshold, and the target installation position of the lower shock absorbing structure on the front end frame mounting lug is determined according to the second comparison result. In order to accurately locate the target installation position, further, the target installation position of the lower shock absorbing structure on the front end frame mounting lug is determined according to the second comparison result of the initial installation position, including: when there are multiple initial installation positions, determining whether the second comparison result of each initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold; when the second comparison result of each initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold, sorting the dynamic stiffness in the simulation result of each initial installation position; and determining the target installation position of the lower shock absorbing structure on the front end frame mounting lug among the multiple initial installation positions according to the sorting result.

[0095] It should be noted that when there are multiple initial installation positions that meet the frequency requirements, it is determined whether the second comparison result of each initial installation position is a dynamic stiffness in the simulation result that is greater than the preset dynamic stiffness threshold, and the initial installation positions whose dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold are screened out, and the dynamic stiffness in the simulation results of the screened multiple initial installation positions are sorted, and the initial installation position with the largest dynamic stiffness is selected as the target installation position. The target installation position selected by the above method can meet both the frequency installation requirements and the dynamic stiffness installation requirements. The above method has strong installation adaptability, and can reduce weight, reduce costs, and improve NVH performance and durability regardless of whether the cooling module is arranged vertically or diagonally.

[0096] It can be understood that when there is only one initial installation position that meets the frequency requirements, it is determined whether the second comparison result of the initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold. If so, the initial installation position is used as the target installation position. If not, it is necessary to redetermine the initial installation position for modal simulation and subsequent target installation position determination steps.

[0097] In this embodiment, the simulation frequency in the simulation result is compared with the relevant modal frequency of each relevant mode in the relevant modal table to determine the first comparison result of the initial installation position; when the first comparison result is a preset comparison result, the dynamic stiffness in the simulation result is compared with a preset dynamic stiffness threshold to determine the second comparison result of the initial installation position; and the target installation position of the lower shock absorbing structure on the front frame mounting lug is determined according to the second comparison result of the initial installation position. In the above manner, it is ensured that the target installation position can meet the frequency installation requirements and the dynamic stiffness installation requirements.

[0098] In addition, an embodiment of the present invention further provides a storage medium on which a front-end module design program is stored. When the front-end module design program is executed by a processor, the steps of the front-end module design method described above are implemented.

[0099] Reference Figure 7 , Figure 7 This is a structural block diagram of the first embodiment of the front-end module design device of the present invention.

[0100] like Figure 7 As shown, the front-end module design device proposed in the embodiment of the present invention includes:

[0101] The establishing module 10 is used to establish a relevant mode table according to the target mode of the cooling module, wherein the cooling module assembly of the cooling module is an open frame structure.

[0102] The processing module 20 is used to determine an initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material.

[0103] The simulation module 30 is used to perform modal simulation according to the initial installation position to determine the simulation result of the initial installation position.

[0104] The processing module 20 is further used to determine the target installation position of the lower shock absorbing structure on the front end frame mounting lug according to the simulation result of the initial installation position and the relevant modal table.

[0105] This embodiment establishes a relevant modal table according to the target modal of the cooling module, wherein the cooling module assembly of the cooling module is an open frame structure; determines the initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material; performs modal simulation according to the initial installation position to determine the simulation result of the initial installation position; and determines the target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table. In the above manner, the target installation position of the lower shock absorbing structure on the front frame mounting lug is determined according to the relevant modal table and the simulation result of the initial installation position, the cooling module assembly does not have a complete closed frame structure, and the mounting lug is made of metal material. The design of the above front-end module can not only improve the NVH performance of the vehicle, but also greatly improve the matching degree with the vehicle model, and can also achieve the effect of reducing vehicle weight and reducing design costs, thereby improving vehicle product performance and user experience.

[0106] In one embodiment, the simulation module 30 is further used to obtain preset design parameters of the front-end module;

[0107] Performing modal simulation according to the preset design parameters and the initial installation position to determine the simulation frequency of the target mode and the dynamic stiffness of the initial installation position;

[0108] A simulation result of the initial installation position is determined according to the simulation frequency and the dynamic stiffness.

[0109] In one embodiment, the processing module 20 is further used to compare the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position;

[0110] When the first comparison result is a preset comparison result, comparing the dynamic stiffness in the simulation result with a preset dynamic stiffness threshold to determine a second comparison result of the initial installation position;

[0111] The target installation position of the lower shock absorbing structure on the front end frame installation lug is determined according to the second comparison result of the initial installation position.

[0112] In one embodiment, the processing module 20 is further used to obtain the relevant modal frequency of the vehicle body related mode, the relevant modal frequency of the steering wheel related mode, the relevant modal frequency of the frame bounce mode and the relevant modal frequency of the front drive motor related mode according to the relevant modal table;

[0113] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the vehicle body related mode to determine the vehicle body frequency comparison result;

[0114] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the steering wheel related mode to determine the steering wheel frequency comparison result;

[0115] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the frame jumping mode to determine the frame frequency comparison result;

[0116] Comparing the simulation frequency in the simulation result with the relevant modal frequency of the relevant mode of the front drive motor to determine the motor frequency comparison result;

[0117] A first comparison result of the initial installation position is obtained according to the motor frequency comparison result, the steering wheel frequency comparison result, the frame frequency comparison result and the body frequency comparison result.

[0118] In one embodiment, the processing module 20 is further used to determine whether the distance between the simulation frequency and the relevant modal frequency of the vehicle body related mode is greater than a preset frequency threshold according to the vehicle body frequency comparison result in the first comparison result;

[0119] When the distance between the simulation frequency and the relevant modal frequency of the vehicle body related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the vehicle frame bounce mode is greater than a preset frequency threshold according to the vehicle frame frequency comparison result in the first comparison result;

[0120] When the distance between the simulation frequency and the modal frequency related to the frame bounce mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the modal frequency related to the steering wheel related mode is greater than a preset frequency threshold according to the steering wheel frequency comparison result in the first comparison result;

[0121] When the distance between the simulation frequency and the relevant modal frequency of the steering wheel-related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the front drive motor-related mode is greater than the preset frequency threshold according to the motor frequency comparison result in the first comparison result;

[0122] When the distance between the simulation frequency and the relevant modal frequency of the relevant mode of the front drive motor is greater than a preset frequency threshold, the first comparison result is determined to be a preset comparison result.

[0123] In one embodiment, the processing module 20 is further used to determine, when there are multiple initial installation positions, whether the second comparison result of each initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold;

[0124] When the second comparison results of each initial installation position are all that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold, the dynamic stiffness in the simulation result of each initial installation position is sorted;

[0125] A target installation position of the lower shock absorbing structure on the front end frame installation ear is determined among a plurality of initial installation positions according to the sorting result.

[0126] In one embodiment, the processing module 20 is further used to obtain a plurality of related modes corresponding to the target mode of the cooling module;

[0127] Determine the relevant modal frequency of each relevant mode;

[0128] A related mode table is established according to a plurality of related modes and related mode frequencies of each related mode.

[0129] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0130] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0131] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0132] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0133] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0134] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0135] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A front-end module design method, characterized in that: The front-end module design method comprises: Establishing a relevant mode table according to a target mode of a cooling module, wherein a cooling module assembly of the cooling module is an open frame structure; Determining an initial installation position of the lower shock absorbing structure on the front frame mounting lug, wherein the front frame mounting lug is made of metal material; Performing modal simulation according to the initial installation position to determine a simulation result of the initial installation position; Determining a target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table; Wherein, determining the target installation position of the lower shock absorbing structure on the front end frame mounting lug according to the simulation result and the relevant modal table includes: Comparing the simulation frequency in the simulation result with the relevant modal frequencies of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position, wherein the relevant modes include vehicle body related modes, steering wheel related modes, frame bounce modes, and front drive motor related modes; When the first comparison result is a preset comparison result, comparing the dynamic stiffness in the simulation result with a preset dynamic stiffness threshold to determine a second comparison result of the initial installation position; The target installation position of the lower shock absorbing structure on the front end frame installation lug is determined according to the second comparison result of the initial installation position.

2. The front-end module design method according to claim 1, characterized in that: The performing modal simulation according to the initial installation position to determine the simulation result of the initial installation position includes: Obtain preset design parameters of the front-end module; Performing modal simulation according to the preset design parameters and the initial installation position to determine the simulation frequency of the target mode and the dynamic stiffness of the initial installation position; A simulation result of the initial installation position is determined according to the simulation frequency and the dynamic stiffness.

3. The front-end module design method according to claim 1, characterized in that: The step of comparing the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position includes: Acquiring, according to the relevant modal table, relevant modal frequencies of vehicle body related modes, relevant modal frequencies of steering wheel related modes, relevant modal frequencies of frame bounce modes, and relevant modal frequencies of front drive motor related modes; Comparing the simulation frequency in the simulation result with the relevant modal frequency of the vehicle body related mode to determine the vehicle body frequency comparison result; Comparing the simulation frequency in the simulation result with the relevant modal frequency of the steering wheel related mode to determine the steering wheel frequency comparison result; Comparing the simulation frequency in the simulation result with the relevant modal frequency of the frame jumping mode to determine the frame frequency comparison result; Comparing the simulation frequency in the simulation result with the relevant modal frequency of the relevant mode of the front drive motor to determine the motor frequency comparison result; A first comparison result of the initial installation position is obtained according to the motor frequency comparison result, the steering wheel frequency comparison result, the frame frequency comparison result and the body frequency comparison result.

4. The front-end module design method according to claim 1, characterized in that: When the first comparison result is a preset comparison result, the dynamic stiffness in the simulation result is compared with a preset dynamic stiffness threshold value, and before determining the second comparison result of the initial installation position, the method further includes: determining, according to the vehicle body frequency comparison result in the first comparison result, whether a distance between the simulation frequency and a relevant modal frequency of the vehicle body relevant mode is greater than a preset frequency threshold; When the distance between the simulation frequency and the relevant modal frequency of the vehicle body related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the vehicle frame bounce mode is greater than a preset frequency threshold according to the vehicle frame frequency comparison result in the first comparison result; When the distance between the simulation frequency and the modal frequency related to the frame bounce mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the modal frequency related to the steering wheel related mode is greater than a preset frequency threshold according to the steering wheel frequency comparison result in the first comparison result; When the distance between the simulation frequency and the relevant modal frequency of the steering wheel-related mode is greater than a preset frequency threshold, determining whether the distance between the simulation frequency and the relevant modal frequency of the front drive motor-related mode is greater than the preset frequency threshold according to the motor frequency comparison result in the first comparison result; When the distance between the simulation frequency and the relevant modal frequency of the relevant mode of the front drive motor is greater than a preset frequency threshold, the first comparison result is determined to be a preset comparison result.

5. The front-end module design method according to claim 1, characterized in that: Determining the target installation position of the lower shock absorbing structure on the front end frame mounting lug according to the second comparison result of the initial installation position includes: When there are multiple initial installation positions, determining whether the second comparison result of each initial installation position is that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold; When the second comparison results of each initial installation position show that the dynamic stiffness in the simulation result is greater than the preset dynamic stiffness threshold, the dynamic stiffness in the simulation result of each initial installation position is sorted; A target installation position of the lower shock absorbing structure on the front end frame installation ear is determined among a plurality of initial installation positions according to the sorting result.

6. The front-end module design method according to any one of claims 1 to 5, characterized in that: The step of establishing a relevant mode table according to the target mode of the cooling module includes: Acquire multiple related modes corresponding to the target mode of the cooling module; Determine the relevant modal frequency of each relevant mode; A related mode table is established according to a plurality of related modes and related mode frequencies of each related mode.

7. A front-end module design device, characterized in that: The front-end module design device comprises: An establishing module, used for establishing a relevant mode table according to a target mode of a cooling module, wherein a cooling module assembly of the cooling module is an open frame structure; A processing module, used to determine an initial installation position of the lower shock absorbing structure on a front frame mounting lug, wherein the front frame mounting lug is made of metal material; A simulation module, used to perform modal simulation according to the initial installation position to determine a simulation result of the initial installation position; The processing module is further used to determine a target installation position of the lower shock absorbing structure on the front frame mounting lug according to the simulation result of the initial installation position and the relevant modal table; The processing module is further used to compare the simulation frequency in the simulation result with the relevant modal frequency of each relevant mode in the relevant modal table to determine a first comparison result of the initial installation position, wherein the relevant modes include body-related modes, steering wheel-related modes, frame bounce modes, and front drive motor-related modes; when the first comparison result is a preset comparison result, compare the dynamic stiffness in the simulation result with a preset dynamic stiffness threshold to determine a second comparison result of the initial installation position; and determine a target installation position of the lower shock-absorbing structure on the front end frame mounting lug according to the second comparison result of the initial installation position.

8. A front-end module design device, characterized in that: The device comprises: a memory, a processor, and a front-end module design program stored in the memory and executable on the processor, wherein the front-end module design program is configured to implement the front-end module design method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores a front-end module design program, and when the front-end module design program is executed by the processor, the front-end module design method according to any one of claims 1 to 6 is implemented.

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