Universal hood plate structure design method, device and equipment and storage medium

Abstract

According to the universal hood plate structure design method, device and equipment and the storage medium, firstly, hood lock catch positions matched with two vehicle types respectively are correspondingly determined according to the predetermined hood lock arrangement positions of the two vehicle types respectively; and designing a universal hood lock catch reinforcing plate based on the determined hood lock catch positions of the two vehicle types to ensure that the universal hood lock catch reinforcing plate can cover hood lock catch areas of the two vehicle types at the same time. Through the design, independent hood metal plate assemblies do not need to be developed for a pure electric vehicle model and an extended range vehicle model respectively, the hood lock catch installation requirements of the two vehicle models can be met only through the universal hood lock catch reinforcing plate, the development investment of special molds is effectively reduced, the mold development period is shortened, and the early-stage development cost of the vehicle models is reduced; and meanwhile, after-sales maintenance intercommunity of hood plates of two vehicle types is improved, the maintenance cost of a user is reduced, and the platform and generalization development trend of synchronously developing multiple vehicle types on the basis of the same basic platform in the automobile industry is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of generalization of automobile hoods, and in particular to a generalization hood panel structure design method, device, equipment and storage medium. BACKGROUND

[0002] At present, new energy vehicles have become the core direction of the development of the automobile industry. In order to improve product competitiveness and reduce development and manufacturing costs, automobile manufacturers generally adopt the development strategy of "derivation of the same platform with multiple vehicle types", that is, simultaneously developing pure electric and extended range vehicle types based on the same basic platform.

[0003] In related technologies, since the extended range vehicle type additionally carries an engine compared to the pure electric vehicle type, there are essential differences in the internal layout of the engine compartment of the two types: the fan, water tank and other heat dissipation systems of the extended range vehicle type need to be arranged around the engine, while the above-mentioned components of the pure electric vehicle type are arranged around the battery and motor system. This difference in layout directly leads to different installation positions of the hood locks (the hood lock needs to be fixed to the front end frame, and the position of the front end frame changes with the adjustment of the engine compartment layout). A set of independent hood sheet metal assemblies needs to be designed for each type of vehicle to match the respective hood lock positions.

[0004] However, two sets of independent hood sheet metal assemblies require the development of two sets of exclusive molds, which has high development cost and long cycle, increasing the upfront development investment of the vehicle type; the hood panels of the pure electric and extended range vehicle types cannot be mutually replaced during after-sales maintenance, reducing the convenience of maintenance and increasing the maintenance cost of users, which does not conform to the development trend of platformization and generalization in the automobile industry, and cannot meet the needs of automobile manufacturers for cost reduction and efficiency improvement and improvement of product comprehensive competitiveness. SUMMARY

[0005] The present application provides a generalization hood panel structure design method, device, equipment and storage medium, which can solve the xx technical problems existing in related technologies.

[0006] In a first aspect, an embodiment of the present application provides a generalization hood panel structure design method, which comprises: According to the determined hood lock arrangement positions of the two types of vehicles respectively, the corresponding hood lock catch positions of the two types of vehicles are determined respectively; Based on the determined hood lock catch positions of the two types of vehicles, a generalization hood lock catch reinforcement plate is designed, which covers the hood lock catch areas of the two types of vehicles at the same time.

[0007] In combination with the first aspect, in an implementation manner, after the generalization hood lock catch reinforcement plate is designed based on the determined hood lock catch positions of the two types of vehicles, which covers the hood lock catch areas of the two types of vehicles at the same time, the method further comprises: According to the structure of the universal hood lock buckle reinforcing plate, the lap joint structure of the hood inner plate is designed to ensure that the welding surface of the universal hood lock buckle reinforcing plate is normally lap jointed with the hood inner plate. The through holes are respectively designed at positions corresponding to the hood lock buckles of the first type of vehicle and the second type of vehicle in the lap joint structure of the hood inner plate, and finally the data design of the universal hood plate assembly is completed.

[0008] In combination with the first aspect, in an implementation mode, before the positions of the hood lock buckles corresponding to the two types of vehicles are respectively determined according to the respective determined positions of the hood locks of the two types of vehicles, the method further includes: According to the vehicle modeling input, the modeling data of the hood outer plate is extracted, and the Z-direction height range of the hood lock buckle from the hood outer plate is determined according to the pedestrian protection requirements; According to the differences in the engine compartment arrangement of the two types of vehicles, the front end frame arrangement positions of the two types of vehicles are respectively determined, and based on the requirement that the hood lock needs to be fixed to the front end frame, the overall arrangement positions of the hood locks of the two types of vehicles are finally determined.

[0009] In combination with the first aspect, in an implementation mode, after the positions of the hood lock buckles corresponding to the two types of vehicles are respectively determined according to the respective determined positions of the hood locks of the two types of vehicles, the method further includes: The structure parameters of the hood lock of the first type of vehicle are obtained, the hood lock buckle of the first type of vehicle is simulated to be locked with the hood lock of the first type of vehicle, and the locking gap and the locking stability are checked; The structure parameters of the hood lock of the second type of vehicle are obtained, the hood lock buckle of the second type of vehicle is simulated to be locked with the hood lock of the second type of vehicle, and the position of the hood lock buckle is adjusted until the hood lock and the hood lock buckle of the two types of vehicles can be normally locked.

[0010] In combination with the first aspect, in an implementation mode, based on the positions of the hood lock buckles determined for the two types of vehicles, a universal hood lock buckle reinforcing plate is designed, so that the hood lock buckle reinforcing plate covers the hood lock buckle areas of the two types of vehicles at the same time, including: Reserve welding points in the areas of the universal hood lock buckle reinforcing plate corresponding to the hood lock buckles of the first type of vehicle and the second type of vehicle; According to the connection strength requirement of the hood lock buckle and the hood lock buckle reinforcing plate, the welding mode and the welding parameters of each reserved welding point are determined to ensure that the hood lock buckle meets the structural strength requirement after being welded with the universal hood lock buckle reinforcing plate.

[0011] In combination with the first aspect, in an implementation mode, after the universal hood lock buckle reinforcing plate is designed based on the positions of the hood lock buckles determined for the two types of vehicles, so that the hood lock buckle reinforcing plate covers the hood lock buckle areas of the two types of vehicles at the same time, the method further includes: The structure strength of the general hood lock buckle reinforcing plate is checked, and stress conditions of the general hood lock buckle reinforcing plate under a hood locking state are simulated. The general hood lock buckle reinforcing plate is virtually assembled with a hood outer plate and a front end frame, assembly interference conditions between the components are checked, and the reinforcing plate structure is further optimized according to the checking and checking results.

[0012] In combination with the first aspect, in an implementation mode, after the general hood lock buckle reinforcing plate is designed at the positions of the hood lock buckles determined based on the two vehicle models and the general hood lock buckle reinforcing plate covers the hood lock buckle areas of the two vehicle models, the method further includes: For the first vehicle model, a hood lock buckle special for the first vehicle model is assembled to a region of the general hood lock buckle reinforcing plate corresponding to the hood lock buckle of the first vehicle model. Or for the second vehicle model, a hood lock buckle special for the second vehicle model is assembled to a region of the general hood lock buckle reinforcing plate corresponding to the hood lock buckle of the second vehicle model, to complete the adaptive assembly of the hood lock buckle and the general hood lock buckle reinforcing plate.

[0013] In the second aspect, an embodiment of the present application provides a general hood plate structure design device, which includes: A hood lock buckle position matching determination module is configured to determine the positions of the hood lock buckles of the two vehicle models respectively according to the positions of the hood locks of the two vehicle models. A general lock buckle reinforcing plate design module is configured to design a general hood lock buckle reinforcing plate based on the positions of the hood lock buckles of the two vehicle models, so that the general hood lock buckle reinforcing plate covers the hood lock buckle areas of the two vehicle models.

[0014] In the third aspect, an embodiment of the present application provides a general hood plate structure design device, which includes a processor, a memory, and a general hood plate structure design program stored in the memory and executable by the processor. When the general hood plate structure design program is executed by the processor, the steps of the general hood plate structure design method described in some embodiments are implemented.

[0015] In the fourth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a general hood plate structure design program. When the general hood plate structure design program is executed by a processor, the steps of the general hood plate structure design method described in some embodiments are implemented.

[0016] The technical scheme provided by the embodiments of the present application has the following beneficial effects: According to the predetermined hood lock arrangement positions of the two, the respective hood lock buckle positions of the two vehicle types are respectively determined; based on the determined hood lock buckle positions of the two vehicle types, a universal hood lock buckle reinforcing plate is designed to ensure that the universal hood lock buckle reinforcing plate can cover the hood lock buckle areas of the two vehicle types at the same time. Through the above design, the pure electric vehicle type and the extended range vehicle type do not need to develop independent hood panel assemblies, and only the universal hood lock buckle reinforcing plate can meet the installation requirements of the hood lock buckles of the two vehicle types, effectively reducing the development investment of the exclusive mold, shortening the mold development cycle, reducing the early development cost of the vehicle type, improving the interoperability of the two vehicle types of the hood panel in after-sales maintenance, reducing the user maintenance cost, meeting the platformization and generalization development trend of the automobile industry based on the same basic platform, and meeting the needs of the vehicle enterprises to reduce costs and increase efficiency and improve the comprehensive competitiveness of products. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Flowchart of an embodiment of the universal hood panel structure design method of the present application; Figure 2 Schematic diagram of determining the Z-direction height range of the hood lock buckle from the hood outer panel according to pedestrian protection requirements in the universal hood panel structure design method of the present application; Figure 3 Schematic diagram of the arrangement of the hood outer panel and the front end frame of the pure electric vehicle type in the universal hood panel structure design method of the present application; Figure 4 Schematic diagram of the arrangement of the hood outer panel and the front end frame of the extended range electric vehicle type in the universal hood panel structure design method of the present application; Figure 5 Schematic diagram of different hood lock buckle positions of the hood outer panel in the universal hood panel structure design method of the present application; Figure 6 Schematic diagram of the arrangement of different hood lock buckle positions of the universal hood lock buckle reinforcing plate in the universal hood panel structure design method of the present application; Figure 7 Schematic diagram of the welding point distribution of the universal hood lock buckle reinforcing plate in the universal hood panel structure design method of the present application; Figure 8 Schematic diagram of the arrangement of different hood lock buckle positions of the hood inner panel in the universal hood panel structure design method of the present application; Figure 9 Schematic diagram of the arrangement of the hood lock buckle of the extended range electric vehicle type by the universal hood lock buckle reinforcing plate in the universal hood panel structure design method of the present application; Figure 10 Schematic diagram of the arrangement of the hood lock buckle of the pure electric vehicle type by the universal hood lock buckle reinforcing plate in the universal hood panel structure design method of the present application; Figure 11 The hardware structure schematic diagram of the generalization hood panel structure design device involved in the embodiment of the present application is shown.

[0018] In the figure: 1, hood; 101, outer plate of the hood; 102, inner plate of the hood; 2, hood lock catch; 201, extended-range electric vehicle type hood lock catch; 202, pure electric vehicle type hood lock catch; 3, hood lock; 4, pure electric vehicle type front end frame; 5, pure electric vehicle type hood lock; 6, extended-range electric vehicle type front end frame; 7, extended-range electric vehicle type hood lock; 8, hood lock catch reinforcement plate; 801, welding point; 9, pure electric vehicle type lock catch through hole; 10, extended-range electric vehicle type lock catch through hole. DETAILED DESCRIPTION

[0019] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] At present, new energy vehicles have become the core direction of the development of the automobile industry. In order to improve product competitiveness and reduce development and manufacturing costs, automobile enterprises generally adopt the development strategy of "one platform with multiple vehicle types", that is, pure electric and extended-range vehicle types are developed simultaneously based on the same basic platform. As a key covering part of the automobile body, the structure design of the hood needs to consider pedestrian protection, body rigidity and assembly convenience. In the platform development, the generalization of the hood panel has become the core requirement of the industry. Through generalization design, mold investment can be reduced, production scheduling can be simplified, inventory costs can be reduced, and the interoperability of parts in after-sales maintenance can be improved, which is one of the important links to promote the landing of new energy vehicle platform.

[0021] Among them, since the extended-range vehicle type additionally carries an engine compared with the pure electric vehicle type, there is an essential difference in the internal layout of the engine compartment of the two types: the fan, water tank and other heat dissipation systems of the extended-range vehicle type need to be arranged around the engine, while the above-mentioned components of the pure electric vehicle type are arranged around the battery and motor system. This difference in layout directly leads to different installation positions of the hood lock of pure electric and extended-range vehicle types (the hood lock needs to be fixed to the front end frame, and the position of the front end frame changes with the adjustment of the engine compartment layout). A set of independent hood sheet metal assembly needs to be designed for each type to match the respective hood lock position.

[0022] However, the two independent hood sheet metal assemblies require the development of two sets of dedicated molds, which are costly and time-consuming, increasing the initial development investment of the vehicle. During after-sales maintenance, the hood panels of the pure electric and range-extended models cannot be interchanged, which reduces maintenance convenience and increases the maintenance cost for users. Overall, this does not conform to the development trend of platformization and generalization in the automotive industry and cannot meet the needs of car companies to reduce costs, increase efficiency and improve the overall competitiveness of their products.

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0024] In a first aspect, embodiments of this application provide a method for designing a generalized machine cover panel structure.

[0025] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the generalized hood panel structure design method of this application. Figure 1 As shown, the generalized machine cover panel structure design method includes: S100: Based on the hood lock layout positions determined for each of the two vehicle models, determine the corresponding hood lock buckle positions for each of the two vehicle models; S200: Based on the hood latch positions determined for the two vehicle models, a universal hood latch reinforcement plate is designed so that the hood latch reinforcement plate can cover the hood latch area of ​​both vehicle models.

[0026] In this embodiment, for example, for pure electric vehicles and range-extended vehicles, the hood lock positions for each vehicle are first determined according to their pre-determined hood lock positions (because range-extended vehicles are equipped with engines while pure electric vehicles are not, the arrangement of cooling components such as fans and water tanks in the engine compartments of the two vehicles is different, which in turn leads to different positions of the front frame where the hood lock is fixed, resulting in different hood lock positions). Then, based on the determined hood lock positions for the two vehicles, a universal hood lock reinforcement plate is designed to ensure that the universal hood lock reinforcement plate can cover the hood lock area of ​​both vehicles at the same time. The above design eliminates the need for separate hood sheet metal assemblies to be developed for pure electric and range-extended electric vehicles. The universal hood latch reinforcement plate can accommodate the hood latch installation requirements of both models, effectively reducing the investment in developing dedicated molds, shortening the mold development cycle, and lowering the initial development costs of the models. At the same time, it improves the after-sales maintenance interoperability of hood panels for the two models, reducing user maintenance costs. This aligns with the automotive industry's trend of platformization and universalization, which involves developing multiple models simultaneously based on the same platform, and meets the needs of automakers to reduce costs, increase efficiency, and enhance the overall competitiveness of their products.

[0027] Furthermore, in one embodiment, after S200, there is also S300, which includes the following steps: S301: Based on the structure of the universal hood latch reinforcement plate, design the overlapping structure of the inner panel of the hood to ensure that the welding surface of the universal hood latch reinforcement plate overlaps normally with the inner panel of the hood. S302: Through holes are designed in the overlapping structure of the inner hood panel to correspond to the positions of the hood latches for the first type of vehicle and the hood latches for the second type of vehicle, respectively, to finally complete the data design of the universal hood panel assembly.

[0028] In this embodiment, S301 is executed first, that is, based on the actual structure of the aforementioned universal hood latch reinforcement plate, the overlapping structure of the inner hood panel is designed. This design ensures that the welding surface of the universal hood latch reinforcement plate and the inner hood panel can overlap normally, meeting the assembly connection requirements of the latch reinforcement plate and the inner hood panel. Then, S302 is executed, and through holes are designed on the overlapping structure of the inner hood panel, corresponding to the positions of the hood latches for the first type of vehicle (pure electric vehicle) and the second type of vehicle (range-extended vehicle). Through the design of the overlapping structure in S301 and the design of the through holes in S302, the data design of the universal hood panel assembly is finally completed. The design steps of the S300 described above are compatible with the structure of the universal hood latch reinforcement plate, enabling the hood inner panel to meet the assembly requirements of both pure electric and range-extended electric vehicles. This eliminates the need to develop separate hood inner panels and overlapping structures for the two types of vehicles, further implementing the universal design of hood panels, reducing the types of parts related to the universal hood panel assembly, and lowering the investment cost of corresponding panel molds. This aligns with the core objective of the universal hood panel structure design stated in the technical disclosure document.

[0029] The overlapping structure can be an additional newly added component or a structural improvement of a local area of ​​the inner panel of the hood.

[0030] Furthermore, in one embodiment, before S100, there is also S000, which includes the following steps: S001: Based on the vehicle model styling input, extract the styling data of the outer hood panel, and determine the Z-axis height range of the hood latch distance from the outer hood panel according to pedestrian protection requirements; S002: Based on the differences in the engine compartment layout of the two models, the front frame layout positions of the two models are determined respectively. Based on the requirement that the hood lock needs to be fixed to the front frame, the overall layout position of the hood lock of the two models is finally determined.

[0031] In this embodiment, S001 is executed first, which involves extracting the styling data of the hood outer panel based on the vehicle model styling input requirements. Simultaneously, based on pedestrian protection requirements, the Z-axis height range of the hood latches from the hood outer panel is determined (i.e., the distance range along the vehicle height direction, referring to...).Figure 2 As shown in the diagram, this provides the outer panel structural reference and height dimension constraints for the subsequent arrangement of the hood latches. Then, S002 is executed, taking into account the differences in the engine compartment layout between the two vehicle types (pure electric and range-extended electric). Because the range-extended electric vehicle is equipped with an engine, the arrangement of its cooling components such as the fan and radiator differs from that of the pure electric vehicle without an engine. Based on this difference, the front frame layout positions for both vehicle types are determined. Since the hood latches need to be fixed to the front frame, the overall hood latch layout position for both vehicle types is ultimately determined based on the front frame layout position. This determined overall hood latch layout position is the "hood latch layout position determined for each of the two vehicle types" in S100, providing an accurate preliminary basis for determining the hood latch position in S100 and ensuring the adaptability of the subsequent universal hood latch reinforcement plate design.

[0032] Furthermore, in one embodiment, after S100, the following step is also included: S101: Obtain the structural parameters of the hood lock of the first vehicle model, simulate the locking of the hood lock of the first vehicle model with the hood lock of the first vehicle model, and check the locking gap and locking stability. S102: Obtain the structural parameters of the hood lock of the second vehicle model, simulate locking the hood lock buckle of the second vehicle model with the hood lock of the second vehicle model, and adjust the position of the hood lock buckle until the hood lock and hood lock buckle of both vehicle models can be locked normally.

[0033] In this embodiment, S101 is executed first, which obtains the structural parameters of the hood lock of the first type of vehicle (pure electric vehicle). The hood lock buckle of the first type of vehicle determined in S100 is simulated and locked with the hood lock of that type of vehicle. During the simulated locking process, the size of the locking gap and the stability of the locking state are checked to determine whether the current buckle position meets the locking function requirements of the hood lock of that type of vehicle. Then, S102 is executed to obtain the structural parameters of the hood lock of the second type of vehicle (range-extended vehicle). Similarly, the hood lock buckle of the second type of vehicle determined in S100 is simulated and locked with the hood lock of that type of vehicle. If an abnormal locking gap or unstable locking occurs during the simulated locking process, the position of the hood lock buckle of the corresponding type of vehicle is adjusted until the hood locks of both types of vehicles can be locked normally with their respective hood lock buckles. The above steps, through simulated locking verification and position optimization of the hood lock and latch for two vehicle models, provide a precise and reliable latch position reference for the subsequent S200 (design of a universal hood latch reinforcement plate that covers the hood latch area of ​​both vehicle models). This ensures that after the design of the universal hood latch reinforcement plate is completed, the hood lock and latch for both vehicle models can still maintain a stable locking relationship, which meets the design requirements of the universal hood panel structure to take into account the assembly functionality and reliability of both vehicle models, and avoids locking failures after the subsequent assembly of the hood panel assembly due to latch position deviations.

[0034] Furthermore, in one embodiment, step S200 further includes the following step: S201: Welding points are reserved in the area of ​​the hood latch for the first type of vehicle and the area of ​​the hood latch for the second type of vehicle on the universal hood latch reinforcement plate. S202: Based on the connection strength requirements between the hood latch and the hood latch reinforcement plate, determine the welding method and welding parameters for each reserved welding point to ensure that the hood latch meets the structural strength requirements after welding with the universal hood latch reinforcement plate.

[0035] In this embodiment, S201 is executed first, where welding points are reserved on the universal hood latch reinforcement plate for the areas corresponding to the hood latches of the first type of vehicle (pure electric vehicle) and the second type of vehicle (range-extended vehicle), respectively, to ensure that the hood latches of both types of vehicles can find suitable welding and fixing positions on the reinforcement plate. Then, S202 is executed, based on the preset connection strength requirements between the hood latches and the universal hood latch reinforcement plate, and combined with the assembly stress characteristics of the hood latches of the two types of vehicles, the welding method (such as arc welding, spot welding, etc.) and specific welding parameters (such as welding current, welding time, weld spacing, etc.) corresponding to each reserved welding point are determined. This design ensures that after the hood latches of the two types of vehicles are welded to the universal hood latch reinforcement plate, the overall connection structure can meet the stress requirements during the hood locking and opening process, avoiding loosening or breakage of the welded parts. During the design process of the universal hood latch reinforcement plate, the welding-related structures and parameters are clearly defined simultaneously. There is no need to design different reinforcement plate welding structures for the two models. This maintains the universality of the reinforcement plate and ensures the reliability of the connection between the latch and the reinforcement plate. It conforms to the design concept of the latch reinforcement plate being completely universal with only the latch position being different. This further reduces the increase in the number of parts due to the difference in welding structure and lowers the cost of corresponding mold development and manufacturing.

[0036] Furthermore, in one embodiment, after S300, there is also S400, which includes the following steps: S401: Perform structural strength verification on the universal hood latch reinforcement plate, simulating the stress on the universal hood latch reinforcement plate under the hood locked state; S402: Virtually assemble the standardized hood latch reinforcement plate with the hood outer panel and front frame, check the assembly interference between the components, and further optimize the reinforcement plate structure based on the verification and inspection results.

[0037] In this embodiment, S401 is executed first to perform a structural strength check on the designed universal hood latch reinforcement plate. Simulation is used to recreate the actual working conditions when the hood is in a locked state. The stress distribution, stress concentration areas, and deformation of the universal hood latch reinforcement plate under this condition are analyzed to determine whether its structural strength meets the load-bearing requirements of pure electric vehicles and range-extended vehicles under daily use and extreme conditions. Then, S402 is executed to integrate the universal hood latch reinforcement plate with the hood outer panel (formed based on the styling data extracted in S001) and the front frame of the two vehicle models. The frame (formed based on the arrangement determined in S002) undergoes virtual assembly. Three-dimensional assembly simulation is used to check for spatial interference between the universal hood latch reinforcement plate and the outer hood panel and front frame. Simultaneously, it verifies whether the relative positional accuracy of each component after assembly meets design standards. If the strength check result in S401 shows areas of insufficient strength in the reinforcement plate, or if the virtual assembly check in S402 reveals interference between components, the structure of the universal hood latch reinforcement plate (such as local thickness, support rib layout, edge contour, etc.) is adjusted and optimized based on the check and inspection results. The steps in S400 verify and optimize the universal hood latch reinforcement plate from both structural strength and assembly compatibility perspectives. This ensures that it can stably withstand the forces in the locked state of the hood, preventing structural failure during long-term use, and eliminates assembly interference with the outer hood panel and front frame, guaranteeing the overall hood structure stability and assembly feasibility of pure electric and range-extended electric vehicles after assembling the universal reinforcement plate.

[0038] Furthermore, in one embodiment, after S300, there is also S500, which includes the following steps: S501: For the first type of vehicle, the hood latch specifically designed for the first type of vehicle is fitted to the area of ​​the universal hood latch reinforcement plate corresponding to the latch of the first type of vehicle. S502: Alternatively, for the second type of vehicle, the hood latch specifically designed for the second type of vehicle can be fitted onto the area of ​​the universal hood latch reinforcement plate corresponding to the second type of vehicle latch, thus completing the adaptation and assembly of the hood latch and the hood latch reinforcement plate.

[0039] In this embodiment, S501 is executed first. For the first type of vehicle (pure electric vehicle), the hood latch specifically for pure electric vehicles is assembled onto the universal hood latch reinforcement plate in the preset area corresponding to the pure electric vehicle latch (this area matches the welding point reserved for the pure electric vehicle latch in S201), ensuring that the assembly position of the special latch and the universal reinforcement plate are precisely aligned. Then, S502 is executed, or for the second type of vehicle (range-extended vehicle), the hood latch specifically for range-extended vehicles is assembled onto the universal hood latch reinforcement plate in the preset area corresponding to the range-extended vehicle latch (this area matches the welding point reserved for the range-extended vehicle latch in S201). Through the selective assembly operation of S501 or S502, the matching assembly of the special hood latches for different vehicle types and the universal hood latch reinforcement plate is completed. The steps of S500 described above, by configuring dedicated latches for the two models and using the same universal reinforcing plate for assembly, not only ensure the assembly functionality of the hood latches for pure electric vehicles and range-extended vehicles, but also eliminate the need to develop hood latch reinforcing plates with different structures for the two models, further reducing the differences in the types of hood panels and lowering the production and management costs of the corresponding parts.

[0040] Here, the technical solution of this application embodiment revolves around the universal design of the hood panel for both battery electric vehicles (BEV) and range-extended electric vehicles (REV), and is achieved through the following steps: Step 1: Determining the prerequisites for the arrangement of the machine cover lock Obtain the shape data of the outer panel 101 of the hood as the shape reference for subsequent design; According to pedestrian protection requirements, when meeting national standards for pedestrian protection, the Z-direction distance H between the hood latch 2 and the outer hood panel 101 must be at least ≥55mm; or when meeting the requirements of the China New Car Assessment Program (C-NCAP), this Z-direction distance H must be at least ≥90mm (e.g., Figure 2 (Illustrative image). C-NCAP is a third-party new vehicle safety evaluation program led by the China Automotive Technology and Research Center. Its pedestrian protection test standards are stricter than national mandatory regulations, covering key items such as head impact, and placing higher requirements on the energy absorption space of the hard point arrangement on the hood to ensure that the design meets both basic compliance and high-level safety evaluation requirements. Distinguishing the X-axis placement of the hood locks for the two vehicle models: Battery electric vehicle (BEV): Front-end frame 4 ( Figure 3 Since there is no engine, components such as the fan and water tank are arranged around the battery and motor, and the X-axis arrangement position of the engine cover lock 5 of the pure electric vehicle is determined accordingly. Range-extended electric vehicle (REV): Range-extended electric vehicle front frame 6 ( Figure 4Because it is equipped with an engine, the heat dissipation components are arranged around the engine, and the X-direction arrangement position of the range-extended electric vehicle hood lock 7 is determined accordingly. Step 2: Determining the position of the hood latches Based on the arrangement of the hood lock 5 for pure electric vehicles and the hood lock 7 for range-extended electric vehicles, the positions of the hood lock latch 202 (BEV latch) for pure electric vehicles and the hood lock latch 201 (REV latch) for range-extended electric vehicles are determined respectively (e.g., Figure 5 (Displaying the positional differences of the two types of latches on the outer panel 101 of the display case).

[0041] Step 3: Design of the universal hood latch reinforcement plate A universal hood latch reinforcement plate 8 is designed to cover the areas of both the hood latch 202 for pure electric vehicles and the hood latch 201 for range-extended electric vehicles (e.g., ...). Figure 6 (Illustrative image) to achieve the standardization of reinforcing plates; Welding points 801 are reserved in the areas of the hood latch reinforcement plate 8 corresponding to the latches of the two vehicle models respectively (e.g. Figure 7 (Display the distribution of weld points), and determine the welding method and parameters according to the connection strength requirements between the latch and the reinforcing plate to ensure that the structural strength after welding can withstand long-term stress under the locked state of the machine cover.

[0042] Step 4: Design of through holes and overlapping structures in the inner panel of the hood Based on the structure of the universal hood buckle reinforcing plate 8, the overlapping structure of the inner hood plate 102 is designed to ensure that the welding surface of the reinforcing plate overlaps normally with the inner hood plate 102 and meets the assembly process requirements. A pure electric vehicle model latch through hole 9 is provided on the inner panel 102 of the hood, corresponding to the position of the pure electric vehicle hood latch 202, and a range-extended electric vehicle model latch through hole 10 is provided on the position of the range-extended electric vehicle hood latch 201 (e.g., ...). Figure 8 (Demonstrating the via arrangement) to complete the universal design of the inner panel 102 of the hood.

[0043] Step 5: Vehicle model adaptation and assembly of the hood latches The range-extended electric vehicle hood latch 201 is fitted to the area of ​​the hood latch reinforcement plate 8 corresponding to the REV latch (e.g., Figure 9 ).

[0044] The pure electric vehicle hood latch 202 is assembled to the area of ​​the hood latch reinforcement plate 8 corresponding to the BEV latch (e.g., Figure 10 This allows for lock adaptation for different vehicle models.

[0045] In summary, this technical solution, through a complete process of "pre-determining the layout of the hood lock (including the Z-direction distance requirements of national standards or C-NCAP) → matching the lock position → designing a universal reinforcing plate → adapting the inner plate through holes → assembling the lock for different vehicle models," not only solves the problem of incompatibility of hood panels caused by differences in engine compartment layout between pure electric and range-extended electric vehicles, reducing mold investment and production management costs, but also ensures pedestrian protection compliance through clear safety standard adaptation, fully meeting the cost reduction, efficiency improvement, and safety upgrade requirements of new energy vehicle platform development.

[0046] Secondly, this application also provides a universal hood panel structure design device, which includes: a hood latch position matching and determination module, which is used to determine the hood latch position corresponding to the two vehicle models according to the hood latch arrangement position determined by the two vehicle models respectively; and a universal latch reinforcement plate design module, which is used to design a universal hood latch reinforcement plate based on the hood latch position determined by the two vehicle models, so that the hood latch reinforcement plate covers the hood latch area of ​​the two vehicle models at the same time.

[0047] The functions of each module in the above-mentioned generalized machine cover panel structure design device correspond to the steps in the above-mentioned generalized machine cover panel structure design method embodiment, and their functions and implementation processes will not be described in detail here.

[0048] Thirdly, embodiments of this application provide a generalized hood panel structure design device, which can be a personal computer (PC), laptop computer, server, or other device with data processing capabilities.

[0049] Reference Figure 11 , Figure 11 This is a schematic diagram of the hardware structure of the generalized hood panel structure design equipment involved in the embodiments of this application. In the embodiments of this application, the generalized hood panel structure design equipment may include a processor, a memory, a communication interface, and a communication bus.

[0050] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0051] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting components within the general-purpose chassis board structure design equipment, as well as interfaces used for interconnecting the general-purpose chassis board structure design equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0052] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0053] The processor can be a general-purpose processor, which can call a general-purpose hood panel structure design program stored in memory and execute the general-purpose hood panel structure design method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the general-purpose hood panel structure design program is called can be referred to in the various embodiments of the general-purpose hood panel structure design method of this application, and will not be repeated here.

[0054] Those skilled in the art will understand that Figure 11 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0055] Fourthly, embodiments of this application also provide a readable storage medium.

[0056] The present application has a readable storage medium storing a generalized hood panel structure design program, wherein when the generalized hood panel structure design program is executed by a processor, it implements the steps of the generalized hood panel structure design method described above.

[0057] The method implemented when the generalized hood panel structure design program is executed can be referred to in various embodiments of the generalized hood panel structure design method of this application, and will not be repeated here.

[0058] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0059] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0060] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0061] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0062] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0063] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0064] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method of designing a generic hood panel structure, characterized by, The generalization hood panel structure design method comprises: According to the determined hood lock arrangement positions of the two vehicle types respectively, the corresponding hood lock catch positions of the two vehicle types are determined respectively; Based on the determined hood lock catch positions of the two vehicle types, a generalization hood lock catch reinforcing plate is designed, so that the hood lock catch reinforcing plate covers the hood lock catch areas of the two vehicle types at the same time.

2. The generalization hood panel structure design method of claim 1, wherein, after the generalization hood lock catch reinforcing plate is designed based on the determined hood lock catch positions of the two vehicle types, so that the hood lock catch reinforcing plate covers the hood lock catch areas of the two vehicle types at the same time, the method further comprises: According to the structure of the generalization hood lock catch reinforcing plate, the lap joint structure of the hood inner panel is designed to ensure that the welding surface of the generalization hood lock catch reinforcing plate is normally lap jointed with the hood inner panel; The through holes are respectively designed at the positions corresponding to the hood lock catch of the first vehicle type and the hood lock catch of the second vehicle type in the lap joint structure of the hood inner panel, and finally the data design of the generalization hood panel assembly is completed.

3. The generalization hood panel structure design method of claim 1, wherein, before the corresponding hood lock catch positions of the two vehicle types are respectively determined according to the determined hood lock arrangement positions of the two vehicle types respectively, the method further comprises: According to the vehicle type modeling input, the modeling data of the hood outer panel is extracted, and according to the pedestrian protection requirement, the Z-direction height range of the hood lock catch from the hood outer panel is determined; According to the differences in the engine compartment arrangement of the two vehicle types, the front end frame arrangement positions of the two vehicle types are respectively determined, and based on the requirement that the hood lock needs to be fixed on the front end frame, the overall arrangement positions of the hood lock of the two vehicle types are finally determined.

4. The generalization hood panel structure design method of claim 1, wherein, after the corresponding hood lock catch positions of the two vehicle types are respectively determined according to the determined hood lock arrangement positions of the two vehicle types respectively, the method further comprises: The structure parameters of the hood lock of the first vehicle type are obtained, the hood lock catch of the first vehicle type is simulated to be locked with the hood lock of the first vehicle type, and the locking gap and locking stability are checked; The structure parameters of the hood lock of the second vehicle type are obtained, the hood lock catch of the second vehicle type is simulated to be locked with the hood lock of the second vehicle type, and the hood lock catch position is adjusted until the hood lock of the two vehicle types can be normally locked with the hood lock catch.

5. The generalization hood panel structure design method of claim 1, wherein, the generalization hood lock catch reinforcing plate is designed based on the determined hood lock catch positions of the two vehicle types, so that the hood lock catch reinforcing plate covers the hood lock catch areas of the two vehicle types at the same time, comprising: Welding point positions are respectively reserved in the areas corresponding to the hood lock catch of the first vehicle type and the hood lock catch of the second vehicle type in the generalization hood lock catch reinforcing plate; According to the connection strength requirement of the hood lock catch and the hood lock catch reinforcing plate, the welding mode and welding parameters of each reserved welding point position are determined to ensure that the hood lock catch and the generalization hood lock catch reinforcing plate meet the structural strength requirement after welding.

6. The generalization hood panel structure design method of claim 1, wherein, ​ ​ ​ ​ After the hood lock position is determined based on the two vehicle models, a general hood lock reinforcing plate is designed to cover the hood lock area of the two vehicle models, and the method further comprises: checking the structural strength of the general hood lock reinforcing plate, and simulating the stress of the general hood lock reinforcing plate in the hood lock state; virtually assembling the general hood lock reinforcing plate with the hood outer plate and the front end frame, checking the assembly interference between the components, and further optimizing the structure of the reinforcing plate according to the checking and checking results.

7. The general hood plate structure design method of claim 1, wherein, after the hood lock position is determined based on the two vehicle models, a general hood lock reinforcing plate is designed to cover the hood lock area of the two vehicle models, and the method further comprises: for the first vehicle model, assembling the hood lock special for the first vehicle model to the area of the general hood lock reinforcing plate corresponding to the lock of the first vehicle model; or for the second vehicle model, assembling the hood lock special for the second vehicle model to the area of the general hood lock reinforcing plate corresponding to the lock of the second vehicle model, to complete the adaptive assembly of the hood lock and the general hood lock reinforcing plate. The general hood plate structure design device comprises:

8. A general-purpose hood panel member structure design device characterized by comprising: a hood lock position matching determination module configured to determine the hood lock position of each of the two vehicle models according to the respective determined hood lock arrangement position of the two vehicle models; a general lock reinforcing plate design module configured to design a general hood lock reinforcing plate based on the determined hood lock position of the two vehicle models, so that the general hood lock reinforcing plate covers the hood lock area of the two vehicle models. The general hood plate structure design device comprises a processor, a memory, and a general hood plate structure design program stored on the memory and executable by the processor, wherein when the general hood plate structure design program is executed by the processor, the steps of the general hood plate structure design method of any one of claims 1 to 7 are implemented.

9. A general-purpose hood panel member structure design device characterized by comprising: The computer readable storage medium stores a general hood plate structure design program, wherein when the general hood plate structure design program is executed by the processor, the steps of the general hood plate structure design method of any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that, ​

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