Design method, device and storage medium for front-end cooling module of range-extended electric vehicle

Abstract

This disclosure provides a design method, apparatus, and storage medium for a front-end cooling module of a range-extended electric vehicle, belonging to the field of electric vehicles. The design method includes: constructing an initial model of the front-end cooling module; performing computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioning condenser, and the high-temperature radiator in the initial model; determining whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation calculations; if the initial model does not meet the cooling performance requirements, adjusting the model dimensions of at least one of the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan, and performing computer simulation calculations again on the adjusted initial model. This disclosure can optimize the design process of the front-end cooling module of a range-extended electric vehicle.

Description

Technical Field

[0001] This disclosure pertains to the field of electric vehicles, and specifically relates to a design method, apparatus, and storage medium for a front-end cooling module of a range-extended electric vehicle. Background Technology

[0002] Range-extended electric vehicles (REEVs) are a new type of electric vehicle that effectively solves the range anxiety problem of pure electric vehicles, and they are highly favored by the market. Compared to pure electric vehicles, the power system of a REEV includes a battery and a traditional engine. The engine functions as a range extender. The engine does not directly drive the electric vehicle but supplies power to the battery. The battery then powers the REEV. Therefore, engine cooling is also essential for REEVs.

[0003] In related technologies, the front-end cooling module in the thermal management system of a range-extended electric vehicle (REEV) is located in the front compartment of the vehicle. The front-end cooling module includes a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan, arranged sequentially according to the air intake direction of the front compartment. For REEVs, due to the increasing trend towards flattened designs, the Z-axis (vertical) space height of the front compartment is relatively low. This limits the height of the low-temperature radiator, air conditioning condenser, and fan. A lower height for these components reduces cooling efficiency. To ensure the front-end cooling module meets cooling requirements while minimizing its height, careful design is necessary. The design of the front-end cooling module often relies on the designer's experience. This involves determining the dimensions of each component based on the designer's experience, conducting relevant cooling experiments, and then verifying the module's compliance with cooling requirements based on the experimental data.

[0004] However, designing the front-end cooling module solely based on the designer's experience will reduce the design efficiency of the front-end cooling module, and will also require constant adjustments to the size of each component and multiple cooling experiments, making the design process cumbersome. Summary of the Invention

[0005] This disclosure provides a design method, apparatus, and storage medium for a front-end cooling module of a range-extended electric vehicle, which can optimize the design process of the front-end cooling module and improve work efficiency. The technical solution is as follows:

[0006] This disclosure provides a design method for a front-end cooling module of a range-extended electric vehicle. The design method includes: constructing an initial model of the front-end cooling module, the initial model including an air guide shroud, a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan. The air guide shroud has air inlets and exhaust outlets on opposite sides, the air inlets being directly opposite the grille. The low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan are arranged sequentially from the air inlet to the exhaust outlet. The air guide shroud covers the low-temperature radiator and is used to blow air from the air inlet at least partially over the low-temperature radiator toward the air conditioning condenser. The cooling effect of each of the low-temperature radiator, the air conditioning condenser, and the high-temperature radiator in the initial model is calculated using computer simulation. Based on the calculation results of the computer simulation, it is determined whether the initial model meets the cooling performance requirements. If the initial model does not meet the cooling performance requirements, the model size of at least one of the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan is adjusted, and the adjusted initial model is calculated using computer simulation again.

[0007] In another implementation of this disclosure, when the initial model does not meet the cooling performance requirements, adjusting the model size of at least one of the air guide shroud, the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan includes: adjusting the height of the low-temperature radiator; and adjusting the height of the air conditioning condenser, the high-temperature radiator, and the fan according to the adjusted height of the low-temperature radiator.

[0008] In another implementation of this disclosure, adjusting the height of the low-temperature heat sink includes: adjusting the height of the low-temperature heat sink by increasing it in an arithmetic progression.

[0009] In another implementation of this disclosure, adjusting the height of the air conditioner condenser, the height of the high-temperature radiator, and the height of the fan based on the adjusted height of the low-temperature radiator includes: adjusting the height of the air conditioner condenser based on the adjusted height of the low-temperature radiator, such that the height of the air conditioner condenser is greater than the height of the low-temperature radiator, and the difference between the height of the air conditioner condenser and the height of the low-temperature radiator is greater than or equal to 2 / 5 of the height of the air conditioner condenser; and adjusting the height of the high-temperature radiator and the height of the fan based on the adjusted height of the air conditioner condenser, such that the difference between any two of the heights of the air conditioner condenser, the high-temperature radiator, and the fan is less than 15cm.

[0010] In another implementation of this disclosure, the design method further includes: when adjusting the model size of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan, adjusting the height of the air guide shroud according to the adjusted model size of the low-temperature radiator and the air conditioner condenser, such that the adjusted height of the air guide shroud is not lower than the adjusted height of the air conditioner condenser.

[0011] In another implementation of this disclosure, the step of performing computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model includes: performing computer simulation prediction on the back pressure of the fan in the initial model, and determining the power of the fan based on the prediction results; and performing computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model based on the power of the fan, the model size of the low-temperature radiator, the model size of the air conditioner condenser, and the model size of the high-temperature radiator.

[0012] In another implementation of this disclosure, the calculation results include the airflow rate of the air blowing towards the low-temperature radiator per unit time, the air velocity of the low-temperature radiator, the temperature of the low-temperature radiator, the airflow rate of the air blowing towards the air conditioner condenser per unit time, the air velocity of the air conditioner condenser, the temperature of the air conditioner condenser, the airflow rate of the air blowing towards the high-temperature radiator per unit time, the air velocity of the high-temperature radiator, and the temperature of the high-temperature radiator; the step of determining whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation includes: if all parameters in the calculation results meet the cooling performance requirements, then the initial model meets the cooling performance requirements.

[0013] In another implementation of this disclosure, the inner top surface of the air guide shroud has an air guiding surface, which is a smooth transition surface.

[0014] In another implementation of this disclosure, a design device for a front-end cooling module of a range-extended electric vehicle is also provided. The design device includes a construction module, a simulation calculation module, a judgment module, and an adjustment module. The construction module is used to construct an initial model of the front-end cooling module. The initial model includes an air guide shroud, a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan. The air guide shroud has air inlets and exhaust outlets on opposite sides. The air inlets face and are directly opposite the grille in the front compartment of the range-extended electric vehicle. The low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan are arranged sequentially from the air inlet to the exhaust outlet. The air guide shroud covers the low-temperature radiator. The air guide shroud is used to blow at least a portion of the air blown in from the air inlet past the low-temperature radiator and toward the air conditioner condenser; the simulation calculation module is used to perform computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model; the judgment module is used to determine whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation calculation; the adjustment module is used to adjust the model size of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan when the initial model does not meet the cooling performance requirements; the simulation calculation module is also used to perform computer simulation calculations again on the adjusted initial model.

[0015] In another implementation of this disclosure, a computer device is also provided, the computer device including a processor and a memory configured to store processor-executable instructions; the processor is configured to execute the design method for the front-end cooling module of the range-extended electric vehicle described above.

[0016] In another implementation of this disclosure, a computer storage medium is also provided, on which computer instructions are stored, which, when executed by a processor, implement the design method of the front-end cooling module of the range-extended electric vehicle described above.

[0017] The beneficial effects of the technical solutions provided in this disclosure are:

[0018] Because the design method provided in this embodiment first performs computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the constructed initial model when designing the front-end cooling module, and then determines whether the initial model meets the cooling performance requirements based on the calculation results, the cooling experiment process can be eliminated, the design steps can be optimized, and work efficiency can be improved. Moreover, when the initial model does not meet the cooling performance requirements, the model dimensions of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan are continuously adjusted, and computer simulation calculations are performed again based on the adjusted model dimensions. In this way, when the model dimensions of each component in the initial model do not meet the cooling requirements, the model dimensions can be directly changed without redesigning the front-end cooling module, greatly improving design efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating a design method for a front-end cooling module of a range-extended electric vehicle according to an embodiment of this disclosure;

[0021] Figure 2 This is a schematic diagram of the initial model of the front-end cooling module provided in the embodiments of this disclosure;

[0022] Figure 3 This is a flowchart illustrating another design method for a front-end cooling module of a range-extended electric vehicle provided in this embodiment.

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the air guide shroud provided in the embodiments of this disclosure;

[0024] Figure 5 This is a front view structural schematic diagram of the air guide shroud provided in the embodiments of this disclosure;

[0025] Figure 6 This is a side view of the air guide shroud provided in an embodiment of this disclosure;

[0026] Figure 7 This is a block diagram of a design device for a front-end cooling module of a range-extended electric vehicle provided in an embodiment of this disclosure;

[0027] Figure 8 This is a schematic diagram of the structure of a computer device provided in an embodiment of this disclosure.

[0028] The symbols in the diagram represent the following meanings:

[0029] 1. Air guide shroud; 101. Air inlet; 102. Air outlet; 10. Air guide surface; 11. Base frame; 12. Air guide shell; 121. First shell; 122. Second shell; 123. Connecting plate; 13. Fixing component; 131. First fixing piece; 132. Second fixing piece; 133. Connecting arm; 120. Clearance space; 1310. First connecting hole; 1320. Second connecting hole; 1330. Third connecting hole;

[0030] 2. Low-temperature radiator;

[0031] 3. Air conditioner condenser;

[0032] 4. High-temperature radiator;

[0033] 5. Fan. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0035] This disclosure provides a design method for a front-end cooling module of a range-extended electric vehicle, such as... Figure 1 As shown, the design method includes:

[0036] S101: Construct the initial model of the front-end cooling module.

[0037] The initial model is the model structure corresponding to the front-end cooling module. The model structure has model dimensions, which are the dimensions of each component in the front-end cooling module.

[0038] Since the front-end cooling module includes a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan, the corresponding initial model of the front-end cooling module also includes the model structures of the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan. For ease of writing, the terms "low-temperature radiator," "air conditioning condenser," "high-temperature radiator," and "fan" in the following text refer to the model structures of the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan in the initial model of the front-end cooling module.

[0039] Figure 2 This is a schematic diagram of the initial model of the front-end cooling module provided in this embodiment of the disclosure. See also... Figure 2In this embodiment, the initial model includes an air guide shroud 1, a low-temperature radiator 2, an air conditioning condenser 3, a high-temperature radiator 4, and a fan 5. The air guide shroud 1 has an air inlet 101 and an air outlet 102 on opposite sides. The air inlet 101 faces the grille in the front compartment of the range-extended electric vehicle and is directly opposite the grille. The low-temperature radiator 2, the air conditioning condenser 3, the high-temperature radiator 4, and the fan 5 are arranged sequentially from the air inlet 101 to the air outlet 102. The air guide shroud 1 covers the low-temperature radiator 2. The air guide shroud 1 is used to blow at least part of the air blown in from the air inlet 101 over the low-temperature radiator 2 and towards the air conditioning condenser 3.

[0040] The above-mentioned air intake 101 facing the grille in the front compartment of the range-extended electric vehicle and being directly opposite the grille means that along the air intake direction, the projection of the air intake 101 on the grille falls completely on the grille.

[0041] The reason for designing the air guide shroud 1 based on the low-temperature radiator 2, air conditioning condenser 3, high-temperature radiator 4, and fan 5 is that the air guide shroud 1 allows the air entering from the air inlet 101 to circulate within a relatively sealed cavity. In this way, the air can enter through the grille and then flow into the air guide shroud 1 through the air inlet 101. Furthermore, because the air guide shroud 1 covers the low-temperature radiator 2, and can at least partially blow the air from the air inlet 101 over the low-temperature radiator 2 towards the air conditioning condenser 3, the air entering the air guide shroud 1 can quickly diffuse to the top of the air conditioning condenser 3 behind the low-temperature radiator 2, thereby dissipating heat from the air conditioning condenser 3 and compensating for the uneven distribution of airflow in front of the electric vehicle due to the closed upper grille. At the same time, the air guide shroud 1 can also ensure that a large amount of fresh air is collected through the air inlet 101 and flows into the low-temperature radiator, improving the cooling efficiency of the electric drive and engine intake air, and also bringing about the optimization of intake efficiency. It can save nearly 10% of the intake area, reduce the wind resistance of the whole vehicle, and effectively isolate the idling heat backflow.

[0042] S102: Perform computer simulation calculations on the cooling effects of the low-temperature radiator, air conditioner condenser, and high-temperature radiator in the initial model.

[0043] S103: Based on the calculation results of computer simulation, determine whether the initial model meets the cooling performance requirements.

[0044] S104: If the initial model does not meet the cooling performance requirements, adjust the model size of at least one of the low-temperature radiator, air conditioner condenser, high-temperature radiator and fan, and perform computer simulation calculations again on the adjusted initial model.

[0045] Because the design method provided in this embodiment first performs computer simulation calculations on the cooling effects of the low-temperature radiator, air conditioner condenser, and high-temperature radiator in the initial model when designing the front-end cooling module, and then determines whether the initial model meets the cooling performance requirements based on the calculation results, the cooling experiment process can be eliminated, the design steps can be optimized, and work efficiency can be improved. Moreover, when the initial model does not meet the cooling performance requirements, the model size of at least one of the low-temperature radiator, air conditioner condenser, high-temperature radiator, and fan can be continuously adjusted, and computer simulation calculations can be performed again based on the adjusted model size. In this way, when the model size of each component in the initial model does not meet the cooling requirements, the model size can be directly changed without redesigning the front-end cooling module, which greatly improves design efficiency.

[0046] Figure 3 This is a flowchart illustrating another design method for a front-end cooling module of a range-extended electric vehicle provided in this disclosure embodiment, combined with... Figure 3 The design methods include:

[0047] S301: Construct the initial model of the front-end cooling module.

[0048] For example, an initial model can be constructed using computer software. In this embodiment, the initial model is constructed using CFD (Computational Fluid Dynamics) simulation software.

[0049] The initial model includes the structure described in step S101. It will not be repeated here.

[0050] Combination Figure 2 The initial model dimensions include the height (Z-axis), width (Y-axis), and thickness (X-axis) of each component in the front compartment of the electric vehicle, such as the air guide shroud 1, low-temperature radiator 2, air conditioning condenser 3, high-temperature radiator 4, and fan 5. See X, Y, and Z directions for details. Figure 3 The direction in the diagram. The Y-axis is represented by a dot, indicating a direction perpendicular to the paper.

[0051] In this embodiment, the structure of the air guide shroud is designed first to facilitate the construction of the initial model.

[0052] Optionally, the inner top surface of the air guide shroud 1 has an air guide surface 10, which extends from the air inlet 101 to the top of the air conditioning condenser 3. The height of the air guide surface 10 in the height direction of the front compartment is not less than the height of the air conditioning condenser 3.

[0053] In the above implementation, the air guide surface 10 is used to quickly guide the air entering through the air inlet 101 to the top of the air conditioner condenser 3, so as to blow air and dissipate heat from the air conditioner condenser 3.

[0054] For example, setting the air guide surface 10 as a smooth transition surface (a smooth transition surface means that there are no bends or corners in the air guide surface, but a smooth transition surface) can reduce the obstruction of airflow due to bends, thereby increasing the airflow entering the top of the air conditioner condenser 3.

[0055] In this embodiment, the air guide surface 10 is an arc-shaped curved surface. The center of the corresponding circle of the air guide surface 10 is located in the exhaust port 102. The arc-shaped curved surface can reduce the resistance of the airflow, so that the air can be quickly blown into the air conditioner condenser 3.

[0056] In other examples, the air guide surface 10 can also be other shapes, such as a smooth slope. However, a slope is less convenient for arranging the air guide shroud 1 compared to a curved surface.

[0057] See Figure 4-6 Optionally, the air guide shroud 1 includes a base frame 11 and an air guide shell 12. The base frame 11 has first openings that communicate with each other on opposite sides. The air guide shell 12 is located on the top of the base frame 11, and the bottom of the air guide shell 12 is connected to the base frame 11. The top of the air guide shell 12 extends to the top of the air conditioner condenser 3. The side of the air guide shell 12 facing the air conditioner condenser 3 has a second opening. The second opening communicates with the first opening on one side of the base frame 11 and forms an exhaust port 102. The first opening on the other side of the base frame 11 forms an air inlet 101. The air guiding surface 10 is located on the inner wall of the air guide shell 12.

[0058] In the above implementation, the base frame 11 serves two purposes: firstly, it forms the air inlet 101, allowing air blown in from the grille to enter the air guide shroud 1; secondly, the base frame 11 also provides a mounting base for the air guide housing 12. The air guide housing 12, through its arc-shaped structure, guides the airflow entering the air guide shroud 1, enabling the airflow to rise rapidly along the inner wall of the air guide housing 12 into the air conditioner condenser 3 for heat exchange.

[0059] In this embodiment, the air guide shroud 1 is an integrally cast structural component.

[0060] In other examples, the structure of the air guide shroud 1 can be in other forms. For example, the air guide shroud includes a bottom plate and an arc-shaped top plate. Along the blowing direction, one end of the top plate is connected to one end of the bottom plate to form an air inlet, and the other end of the top plate is connected to the other end of the bottom plate to form an air outlet. The inner wall of the top plate forms an air guiding surface.

[0061] Optionally, the air guide shell 12 includes a first shell 121, a second shell 122 and a connecting plate 123. The first shell 121 and the second shell 122 are arranged at intervals along the length direction of the bottom frame 11 and are both connected to the bottom frame 11. The first shell 121 and the second shell 122 are both arc-shaped shells.

[0062] The connecting plate 123 is located between the first housing 121 and the second housing 122, and is connected to both the first housing 121 and the second housing 122. The connecting plate 123 forms a clearance space 120 with the first housing 121 and the second housing 122.

[0063] In the above implementation, the first housing 121 and the second housing 122 are configured as arc-shaped housings. This allows the airflow entering the air guide shroud 1 to be guided by the arc-shaped surface of the arc structure, enabling the airflow to flow quickly along the curved surface and reach the top of the air conditioner condenser 3. The connecting plate 123 is used to connect the first housing 121 and the second housing 122, and also allows a clearance space 120 to be formed between the first housing 121 and the second housing 122 to facilitate the arrangement of other components in the front compartment of the electric vehicle.

[0064] In other examples, the air guide shell 12 can also be directly set as an arc-shaped shell, that is, an independent shell. However, this may cause interference with other components. In other words, the shape and structure of the air guide shell 12 can be designed and arranged according to the actual situation, and is not limited to the forms and structures mentioned above.

[0065] In this embodiment, the bottom frame 11 is a rectangular frame, with its length along the Y-axis of the front compartment of the electric vehicle. The width of the bottom frame 11 is along the X-axis of the front compartment. Along the Z-axis of the front compartment, the width of the bottom surface of the bottom frame 11 is greater than the width of its top surface. The top surface of the bottom frame 11 is connected to the air guide shell 12.

[0066] This allows the wider bottom surface of the base frame 11 to provide a base for the low-temperature radiator 2. In other words, when the low-temperature radiator 2 is installed in the front compartment of the electric vehicle, it can be directly connected to the bottom surface of the base frame 11 using fasteners. To save costs, other components, such as the air conditioning condenser 3, the high-temperature radiator 4, and the fan 5, are directly connected to the bottom surface of the front compartment of the electric vehicle using fasteners.

[0067] Optionally, the air guide cover 1 also includes a plurality of fasteners 13, which are arranged at intervals along the outer edge of the air outlet 102 of the air guide cover 1 and are connected to the bottom frame 11 or the air guide shell 12.

[0068] In the above implementation, the fastener 13 is used to fix the air guide cover 1 to the water tank of the electric vehicle or to the crossbeam or longitudinal beam in the front compartment of the electric vehicle.

[0069] In this embodiment, the fastener 13 can take various forms. The fastener 13 includes a first fastening piece 131, multiple second fastening pieces 132, and at least one pair of connecting arms 133 arranged in pairs. The first fastening piece 131 is elongated, and its length direction is the same as that of the bottom frame 11. The first fastening piece 131 and the bottom frame 11 are located on opposite sides of the air guide shell 12. The first fastening piece 131 is connected to the outer edge of the air guide shell 12. Multiple first connecting holes 1310 are arranged at intervals along the length direction of the first fastening piece 131. The axial direction of the first connecting holes 1310 is the X-direction of the front compartment. Multiple second fastening pieces 132 are located between the first fastening piece 131 and the bottom frame 11, and are located on opposite sides of the air guide shell 12, and each second fastening piece 132 is connected to the air guide shell 12. The second fastening piece 132 is a U-shaped piece, and a second connecting hole 1320 is provided in the second fastening piece 132, the axial direction of the second connecting hole 1320 being the Z-direction of the front compartment.

[0070] In the Z-direction of the forward compartment, two pairs of connecting arms 133 are located on opposite sides of the bottom frame 11, with one end of each connecting arm 133 connected to the bottom frame 11. The length direction of the connecting arm 133 is the Y-direction of the forward compartment, that is, the direction from the air inlet 101 to the air outlet 102. The connecting arm 133 has a third connecting hole 1330, the axis of which is in the X-direction of the forward compartment.

[0071] This structure allows the air guide shroud 1 to be fixed in the X, Y, and Z directions of the front compartment, ensuring that the air guide shroud 1 is securely installed inside the front compartment.

[0072] In this embodiment, the height of the air conditioner condenser 3 is greater than the height of the low-temperature radiator 2, and the difference between the height of the air conditioner condenser 3 and the height of the low-temperature radiator 2 is greater than or equal to 2 / 5 of the height of the air conditioner condenser.

[0073] In the above implementation, since the bottoms of the low-temperature radiator 2, the air conditioning condenser 3, the high-temperature radiator 4, and the fan 5 are all located at the bottom of the front compartment of the electric vehicle, and the low-temperature radiator 2, the air conditioning condenser 3, the high-temperature radiator 4, and the fan 5 are arranged sequentially, at least a portion of the air conditioning condenser 3 will be blocked by the low-temperature radiator 2, thus affecting the cooling effect of the airflow blown in by the grille. To ensure high heat dissipation efficiency, the height of the air conditioning condenser 3 is greater than the height of the low-temperature radiator 2, and the difference between the heights of the air conditioning condenser 3 and the low-temperature radiator 2 is more than 2 / 5 of the height of the air conditioning condenser 3. This ensures that at least 2 / 5 of the height of the air conditioning condenser 3 is not blocked by the low-temperature radiator 2, meaning that at least 2 / 5 of the area of ​​the air conditioning condenser 3 is not obstructed by the low-temperature radiator 2 and can contact the airflow blown in by the grille, thereby accelerating the heat exchange efficiency of the air conditioning condenser 3.

[0074] In other examples, the height of the air conditioner condenser 3 can also be other heights. Without affecting the heat exchange efficiency of the air conditioner condenser 3 and the low-temperature radiator 2, the height of the air conditioner condenser 3 can be any size.

[0075] In this embodiment, the difference between any two of the heights of the air conditioner condenser 3, the high-temperature radiator 4, and the fan 5 is less than 15cm.

[0076] This increases the heat exchange efficiency of the high-temperature radiator 4 by increasing its area. Similarly, the airflow efficiency of the fan 5 is increased by increasing its area.

[0077] In other examples, the height of the high-temperature radiator 4 can also be other heights. Without affecting the heat exchange efficiency of the high-temperature radiator 4, the height of the high-temperature radiator 4 can be any size.

[0078] In this embodiment, the initial model dimensions can be predetermined based on the dimensions of the forward compartment. For example, the height of the low-temperature radiator can be 80% of the forward compartment height. After determining the height of the low-temperature radiator, the heights of the air conditioning condenser, high-temperature radiator, and fan can be determined sequentially. For other dimensions, the widths of the low-temperature radiator, air conditioning condenser, high-temperature radiator, and fan are all 60% of the forward compartment width. The thicknesses of the low-temperature radiator, air conditioning condenser, high-temperature radiator, and fan can be set according to their respective conventional widths.

[0079] S302: Perform computer simulation to predict the back pressure of the fan in the initial model, and determine the fan power based on the prediction results.

[0080] In this embodiment, to further compensate for the airflow loss caused by the electric vehicle only being able to intake air through the lower grille, the back pressure of the fan in the initial model is determined based on CFD simulation prediction. Then, based on the predicted back pressure, the power of the fan in the initial model is selected to ensure that the fan power meets the requirements. The fan provides sufficient power to the entire vehicle. The fan can provide more airflow under extreme thermal management conditions, further increasing the air inflow and ensuring cooling performance under extreme conditions.

[0081] When selecting the fan power based on the back pressure of the fan in the initial model predicted by computer simulation, the fan's air pressure can be determined based on the back pressure (the air pressure must be greater than the back pressure). In other words, the fan's air pressure can be determined based on the back pressure, and then the fan power can be calculated based on the fan's air pressure and the airflow requirements of the initial model.

[0082] Because the fan's airflow, air pressure, and power satisfy the following formula:

[0083] N = Q * P / (3600η1 * η2 * 1000);

[0084] Where N is the fan power; Q is the air volume; P is the air pressure; η1 is the fan efficiency, which can be taken as 0.719 to 0.8; and η2 is the mechanical transmission efficiency, which can be determined according to different transmission methods.

[0085] S303: Based on the fan power, the model size of the low-temperature radiator, the model size of the air conditioner condenser, and the model size of the high-temperature radiator, perform computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model.

[0086] In this embodiment, the cooling effects of the low-temperature radiator, air conditioner condenser, and high-temperature radiator in the initial model are simulated and calculated using computer CFD simulation software, and the calculation results are obtained.

[0087] During the calculation, calculations can be performed sequentially according to different operating conditions of the electric vehicle. In each calculation, the air intake volume blown into the air guide shroud, the air volume of the fan, and the model dimensions of the initial model are all known values. Based on these known values, calculations can be performed using CFD.

[0088] S304: Based on the calculation results of computer simulation, determine whether the initial model meets the cooling performance requirements.

[0089] The calculation results include the air volume, air velocity, and temperature of the low-temperature radiator; the air volume, air velocity, and temperature of the air conditioner condenser; and the air volume, air velocity, and temperature of the high-temperature radiator.

[0090] If all parameters in the computer simulation calculation results meet the cooling performance requirements, then the initial model meets the cooling performance requirements.

[0091] In other words, if any parameter in the computer simulation calculation does not meet the cooling performance requirements, then the initial model will not meet the cooling performance requirements.

[0092] When determining whether the cooling performance requirements are met, if the calculated airflow and velocity of the low-temperature radiator, the airflow and velocity of the air conditioner condenser, the airflow and velocity of the high-temperature radiator are all greater than their corresponding theoretical values, and the temperatures of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator are all less than their corresponding theoretical values, then the initial model meets the cooling performance requirements. If at least one of the calculated airflow and velocity of the low-temperature radiator, the airflow and velocity of the air conditioner condenser, the airflow and velocity of the air conditioner condenser, the airflow and velocity of the high-temperature radiator is not greater than its corresponding theoretical value, or at least one of its corresponding velocities is not greater than its corresponding theoretical value, or at least one of its temperatures is not less than its corresponding theoretical value, then the initial model does not meet the cooling performance requirements.

[0093] The airflow of a low-temperature radiator refers to the flow rate of air blown towards it per unit time (i.e., the amount of air circulating through it per unit time). The airflow of a high-temperature radiator refers to the flow rate of air blown towards it per unit time (i.e., the amount of air circulating through it per unit time). The airflow of an air conditioner condenser refers to the flow rate of air blown towards it per unit time (i.e., the amount of air circulating through it per unit time).

[0094] S305: If the initial model does not meet the cooling performance requirements, adjust the model size of at least one of the following: low-temperature radiator, air conditioning condenser, high-temperature radiator, and fan.

[0095] Alternatively, S305 is implemented in the following way:

[0096] 3051: Adjust the height of the low-temperature radiator.

[0097] The height of the low-temperature radiator is adjusted sequentially by increasing arithmetic increments.

[0098] For example, if the initial height of the low-temperature radiator is h0, the first adjustment can be h0 + h0 * 5%, the second adjustment can be h0 + 2 * h0 * 5%, the third adjustment can be h0 + 3 * h0 * 5%, and so on, until the cooling performance requirements are met.

[0099] 3052: Adjust the height of the air conditioner condenser, the height of the high-temperature radiator, and the height of the fan according to the adjusted height of the low-temperature radiator.

[0100] Because the height of the air conditioner condenser and the height of the low-temperature radiator satisfy the relationship described above—that is, the difference between the height of air conditioner condenser 3 and the height of low-temperature radiator 2 is greater than or equal to 2 / 5 of the height of the air conditioner condenser—and to further reduce the height of the front-end cooling module, the difference between the height of air conditioner condenser 3 and the height of low-temperature radiator 2 is equal to 2 / 5 of the height of the air conditioner condenser. In other words, the height of the low-temperature radiator and the height of the air conditioner condenser satisfy a quantitative relationship. Based on the adjusted height of the low-temperature radiator, the height of the air conditioner condenser can be adjusted so that the height of the air conditioner condenser is greater than the height of the low-temperature radiator, and the difference between the heights of the air conditioner condenser and the low-temperature radiator is greater than or equal to 2 / 5 of the height of the air conditioner condenser.

[0101] After adjusting the height of the low-temperature radiator, the height of the air conditioner condenser also needs to be adjusted to ensure that the heights of the condenser and the low-temperature radiator always satisfy the above relationship. Similarly, after adjusting the height of the condenser, the heights of the high-temperature radiator and the fan also need to be adjusted so that the difference between any two of these heights is always less than 15cm. This allows for the quick determination of the heights of the high-temperature radiator and the fan, given that the height of the low-temperature radiator has already been determined. Furthermore, ensuring that the difference between any two of these heights is always less than 15cm not only limits the overall height of the front-end cooling module but also does not affect the heat exchange efficiency of each component.

[0102] 3053: Based on the adjusted model dimensions of the low-temperature radiator and air conditioner condenser, adjust the height of the air guide shroud so that the height of the adjusted air guide shroud is not lower than the height of the adjusted air conditioner condenser.

[0103] Since the air guide shroud needs to direct airflow to the top of the air conditioner condenser, when adjusting the model dimensions of at least one of the low-temperature radiator, air conditioner condenser, high-temperature radiator, and fan, the height of the air guide shroud also needs to be adjusted accordingly. This ensures that the height of the adjusted air guide shroud is not lower than the height of the adjusted air conditioner condenser, so that the air guide shroud can always direct airflow to the top of the air conditioner condenser.

[0104] In other examples, when adjusting the model size, only the height of the low-temperature radiator can be adjusted. In this case, if the simulation calculations still fail to meet the cooling performance requirements after continuously adjusting the height of the low-temperature radiator, the height of the air conditioner condenser, etc., can be changed sequentially. This can also yield model dimensions that meet the cooling performance requirements. Moreover, while changing a single model size may involve a large computational workload, it helps to identify the influence of the height of each component on the cooling performance requirements, allowing for rapid adjustment of the model size.

[0105] S306: Perform computer simulation calculations again on the adjusted initial model.

[0106] Alternatively, S306 is implemented in the following way:

[0107] 3061: Perform computer simulation calculations again on the adjusted initial model of the front-end cooling module.

[0108] 3062: Based on the calculation results of computer simulation, determine whether the front-end cooling module meets the cooling performance requirements.

[0109] 3063: Repeat the process of S305-3062 until the adjusted front-end cooling module meets the cooling performance requirements.

[0110] By iterating repeatedly using CFD, the minimum height of the low-temperature radiator can be determined when the airflow, air velocity, and temperature of the low-temperature radiator, the airflow, air velocity, and temperature of the air conditioner condenser, and the airflow, air velocity, and temperature of the high-temperature radiator all meet the theoretical values.

[0111] After determining the height of the low-temperature radiator, the height of the air conditioning condenser, the height of the high-temperature radiator, and the height of the fan, the other model dimensions, the width and length of each component, etc., can be designed directly based on the width and length of the front compartment, as long as the front cooling module can be installed in the front compartment.

[0112] Using the model dimensions of the initial model that meets the cooling performance requirements as the design data for the front-end cooling module, the low-temperature radiator, air conditioning condenser, high-temperature radiator, fan, etc. in the front-end cooling module can be designed reasonably. Then, the size of the air guide shroud is designed according to the specifications of the low-temperature radiator, air conditioning condenser, high-temperature radiator and fan, etc., and finally the overall structure of the front-end cooling module is obtained.

[0113] The design method provided in this disclosure can effectively improve air intake efficiency and uniformity while reducing the height of the front compartment to maintain the styling, solve the heat dissipation problem of the engine compartment, and effectively control the number and cost of heat exchangers, and is conducive to platform-based design and development.

[0114] In addition, this disclosure also provides a design device for a front-end cooling module of a range-extended electric vehicle, such as... Figure 7 As shown, the design device includes a construction module 701, a simulation calculation module 702, a judgment module 703, and an adjustment module 704.

[0115] Module 701 is used to build the initial model of the front-end cooling module.

[0116] The initial model includes an air guide shroud, a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan. The air guide shroud has air inlets and exhaust outlets on opposite sides. The air inlets face the grille in the front compartment of the range-extended electric vehicle and are directly opposite the grille. The low-temperature radiator, air conditioning condenser, high-temperature radiator, and fan are arranged in sequence from the air inlet to the exhaust outlet. The air guide shroud covers the low-temperature radiator and is used to blow at least part of the air blown in from the air inlet over the low-temperature radiator and toward the air conditioning condenser.

[0117] The simulation calculation module 702 is used to perform computer simulation calculations on the cooling effects of the low-temperature radiator, air conditioner condenser and high-temperature radiator in the initial model.

[0118] The judgment module 703 is used to determine whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation.

[0119] The adjustment module 704 is used to adjust the model size of at least one of the low-temperature radiator, air conditioning condenser, high-temperature radiator and fan when the initial model does not meet the cooling performance requirements.

[0120] The simulation calculation module 702 is also used to perform computer simulation calculations again on the adjusted initial model.

[0121] The above-described design device possesses all the beneficial effects of the design method, which will not be described in detail here.

[0122] Optionally, the adjustment module 704 is used to adjust the height of the low-temperature radiator, and adjust the height of the air conditioner condenser, the high-temperature radiator and the fan according to the adjusted height of the low-temperature radiator.

[0123] Optionally, the adjustment module 704 is used to adjust the height of the low-temperature heat sink in an arithmetic progression.

[0124] Optionally, the adjustment module 704 is used to adjust the height of the air conditioner condenser according to the adjusted height of the low-temperature radiator, so that the height of the air conditioner condenser is greater than the height of the low-temperature radiator, and the difference between the height of the air conditioner condenser and the height of the low-temperature radiator is greater than or equal to 2 / 5 of the height of the air conditioner condenser; and to adjust the height of the high-temperature radiator and the height of the fan according to the adjusted height of the air conditioner condenser, so that the difference between any two of the heights of the air conditioner condenser, the high-temperature radiator, and the fan is less than 15cm.

[0125] Optionally, the adjustment module 704 is used to adjust the height of the air guide shroud according to the adjusted model dimensions of the low-temperature radiator and the air conditioner condenser when adjusting the model dimensions of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator and the fan, so that the height of the adjusted air guide shroud is not lower than the height of the adjusted air conditioner condenser.

[0126] The simulation calculation module 702 is used to perform computer simulation prediction of the back pressure of the fan in the initial model and determine the power of the fan based on the prediction results; based on the power of the fan, the model size of the low-temperature radiator, the model size of the air conditioner condenser and the model size of the high-temperature radiator, the computer simulation calculation is performed on the cooling effect of the low-temperature radiator, the air conditioner condenser and the high-temperature radiator in the initial model.

[0127] Optionally, the judgment module 703 is also used to determine whether the initial model meets the cooling performance requirements if all parameters in the calculation results meet the cooling performance requirements.

[0128] It should be noted that the design device for the front-end cooling module of the range-extended electric vehicle provided in the above embodiments is only an example of the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the design device for the front-end cooling module of the range-extended electric vehicle and the design method embodiment for the front-end cooling module of the range-extended electric vehicle provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be described in detail here.

[0129] Figure 8 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present disclosure, combined with... Figure 8 The computer device 800 may include one or more of the following components: processor 801, memory 802, communication interface 803, and bus 804.

[0130] The processor 801 includes one or more processing cores. The processor 801 executes various functional applications and information processing by running software programs and modules. The memory 802 and the communication interface 803 are connected to the processor 801 via a bus 804. The memory 802 can be used to store at least one instruction, which the processor 801 uses to execute to implement the various steps in the above method.

[0131] Furthermore, the memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0132] This disclosure also provides a computer-readable storage medium storing computer instructions. When the computer instructions stored in the computer-readable storage medium are executed by an electronic device, the electronic device performs the design method for the front-end cooling module of the range-extended electric vehicle provided in the above-described method embodiments.

[0133] This disclosure also provides a computer program product, which includes one or more computer program instructions. When the computer program instructions are loaded and run by a computer, the computer executes the design method for the front-end cooling module of the range-extended electric vehicle provided in the above-described method embodiments.

[0134] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A design method for a front-end cooling module of a range-extended electric vehicle, characterized in that, The design method includes: An initial model of the front-end cooling module is constructed. The initial model includes an air guide shroud (1), a low-temperature radiator (2), an air conditioning condenser (3), a high-temperature radiator (4), and a fan (5). The air guide shroud (1) has an air inlet (101) and an air outlet (102) on opposite sides. The air inlet (101) is directly opposite the grille. The low-temperature radiator (2), the air conditioning condenser (3), the high-temperature radiator (4), and the fan (5) are arranged in sequence from the air inlet (101) to the air outlet (102). The air guide shroud (1) covers the low-temperature radiator (2). The air guide shroud (1) is used to blow at least part of the air blown in from the air inlet (101) over the low-temperature radiator (2) and towards the air conditioning condenser (3). The cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model are calculated using computer simulation. Based on the calculation results of the computer simulation, determine whether the initial model meets the cooling performance requirements; If the initial model does not meet the cooling performance requirements, the model size of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan is adjusted, and the adjusted initial model is subjected to computer simulation calculation again. When the initial model does not meet the cooling performance requirements, adjusting the model dimensions of at least one of the following components—the air guide shroud, the low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan—includes: Adjust the height of the low-temperature radiator; Based on the adjusted height of the low-temperature radiator, adjust the height of the air conditioner condenser, the height of the high-temperature radiator, and the height of the fan; The computer simulation calculation of the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model includes: The back pressure of the fan in the initial model is predicted by computer simulation, and the power of the fan is determined based on the prediction results; Based on the power of the fan, the model size of the low-temperature radiator, the model size of the air conditioner condenser, and the model size of the high-temperature radiator, computer simulation calculations are performed on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model.

2. The design method according to claim 1, characterized in that, Adjusting the height of the low-temperature radiator includes: The height of the low-temperature radiator is adjusted by increasing the arithmetic increments.

3. The design method according to claim 2, characterized in that, The step of adjusting the height of the air conditioner condenser, the height of the high-temperature radiator, and the height of the fan based on the adjusted height of the low-temperature radiator includes: Based on the adjusted height of the low-temperature radiator, the height of the air conditioner condenser is adjusted so that the height of the air conditioner condenser is greater than the height of the low-temperature radiator, and the difference between the height of the air conditioner condenser and the height of the low-temperature radiator is greater than or equal to 2 / 5 of the height of the air conditioner condenser. Based on the adjusted height of the air conditioner condenser, the heights of the high-temperature radiator and the fan are adjusted respectively, so that the difference between any two of the heights of the air conditioner condenser, the high-temperature radiator, and the fan is less than 15cm.

4. The design method according to claim 3, characterized in that, The design method further includes: When adjusting the model size of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan, the height of the air guide shroud is adjusted according to the adjusted model sizes of the low-temperature radiator and the air conditioner condenser, so that the adjusted height of the air guide shroud is not lower than the adjusted height of the air conditioner condenser.

5. The design method according to any one of claims 1-4, characterized in that, The calculation results include the airflow rate of the low-temperature radiator, the air velocity of the low-temperature radiator, the temperature of the low-temperature radiator, the airflow rate of the air conditioner condenser, the air velocity of the air conditioner condenser, the temperature of the air conditioner condenser, the airflow rate of the air conditioner radiator, the air velocity of the air conditioner condenser, and the temperature of the high-temperature radiator per unit time. The step of determining whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation includes: If all parameters in the calculation results meet the cooling performance requirements, then the initial model meets the cooling performance requirements.

6. The design method according to any one of claims 1-4, characterized in that, The inner top surface of the air guide shroud (1) has an air guide surface (10), which is a smooth transition surface.

7. A design device for a front-end cooling module of a range-extended electric vehicle, characterized in that, The design device includes a construction module, a simulation calculation module, a judgment module, and an adjustment module; The building module is used to construct an initial model of the front-end cooling module. The initial model includes an air guide shroud, a low-temperature radiator, an air conditioning condenser, a high-temperature radiator, and a fan. The air guide shroud has air inlets and exhaust outlets on opposite sides. The air inlets face the grille in the front compartment of the range-extended electric vehicle and are directly opposite the grille. The low-temperature radiator, the air conditioning condenser, the high-temperature radiator, and the fan are arranged sequentially from the air inlet to the exhaust outlet. The air guide shroud covers the low-temperature radiator and is used to blow air from the air inlet at least partially over the low-temperature radiator toward the air conditioning condenser. The simulation calculation module is used to perform computer simulation calculations on the cooling effects of the low-temperature radiator, the air conditioner condenser, and the high-temperature radiator in the initial model. The judgment module is used to determine whether the initial model meets the cooling performance requirements based on the calculation results of the computer simulation. The adjustment module is used to adjust the model size of at least one of the low-temperature radiator, the air conditioner condenser, the high-temperature radiator, and the fan when the initial model does not meet the cooling performance requirements. The simulation calculation module is also used to perform computer simulation calculations on the adjusted initial model again; The adjustment module is also used to adjust the height of the low-temperature radiator; and to adjust the height of the air conditioner condenser, the height of the high-temperature radiator, and the height of the fan according to the adjusted height of the low-temperature radiator. The simulation calculation module is also used to perform computer simulation prediction of the back pressure of the fan in the initial model, and determine the power of the fan based on the prediction results; based on the power of the fan, the model size of the low-temperature radiator, the model size of the air conditioner condenser and the model size of the high-temperature radiator, the module performs computer simulation calculation of the cooling effect of the low-temperature radiator, the air conditioner condenser and the high-temperature radiator in the initial model.

8. A computer device, characterized in that, The computer device includes a processor and a memory configured to store executable instructions of the processor; the processor is configured to execute the design method of the front-end cooling module for a range-extended electric vehicle according to any one of claims 1 to 6.

9. A computer storage medium storing computer instructions thereon, characterized in that, When the computer instructions are executed by the processor, they implement the design method of the front-end cooling module of the range-extended electric vehicle according to any one of claims 1 to 6.

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