Hybrid vehicle motor cooling device, design method, recording medium and system thereof

Abstract

This invention belongs to the field of automotive component technology, and specifically relates to a hybrid vehicle motor cooling device and its design method. Through a rational layout of the main circulation pipeline and branch expansion chambers, it achieves tiered energy absorption for cooling the multi-function controller and water pump assembly, expelling air, reducing cavitation, and lowering the possibility of leakage. A unique spatial arrangement places most of the cooling circulation system within the convection air passage between the cooler and the battery, facilitating heat dissipation and cooling. The cooling pipe type and length determined by this method result in a shorter overall length of the cooling system hoses, facilitating integration and preventing buckling during installation, thus ensuring stable and reliable heat dissipation performance. This invention also provides a non-transitory readable recording medium storing a method program and a system containing this medium. The program can be invoked by a processing circuit to execute the above method.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, and discloses a hybrid vehicle motor cooling device and its design method, a recording medium and system storing a program capable of executing the method. Background Technology

[0002] Hybrid vehicles have two power systems: a fuel engine system and an electric drive system, making space very limited. Compared to traditional fuel vehicles, hybrid vehicles have an additional water pump assembly cooling system and a battery cooling system, which makes layout very difficult, especially with the increased number of cooling pipes. If the layout and structural design are not proper, it can cause problems such as messy and kinked pipes, which can lead to obstructed coolant delivery or poor air expulsion from the pipes, affecting the performance of the cooling system and thus the overall vehicle performance.

[0003] In addition, improper pipe connection locations and water pump placement can also affect the cooling system performance, thereby impacting overall vehicle performance. To achieve good heat dissipation while maintaining vehicle weight and compact layout, each cooling pipe often needs multiple bends. When a single cooling pipe has many bends, manufacturing and installation become more difficult. If all cooling pipes are straight hoses, bending them during actual installation based on surrounding parts can easily cause kinking, affecting the cooling system performance. Summary of the Invention

[0004] To address the above problems, this invention provides a design method for a hybrid vehicle motor cooling device, the specific solution of which includes the following steps:

[0005] P1. Design of the cooling water circulation path for the hybrid vehicle motor cooling system: After being cooled by the air-cooled radiator, the cooling water enters the water pump for pressurization and is pumped out. After flowing through the multi-in-one controller, it enters the oil cooler to continue absorbing heat, and finally returns to the air-cooled radiator, where the heat is exhausted to the outside of the vehicle by the fan. A branch line to the expansion tank is provided before entering the water pump to regulate the water volume and exhaust the air. The cooling water and the cooling oil that carries away the heat from the motor exchange heat in the oil cooler.

[0006] P2. Design the fixed positions of each component on the cooling water circulation path: The air-cooled radiator and battery bracket are placed on the outside of the left and right longitudinal beams of the vehicle, respectively; the water pump assembly is fixed to the bottom of the battery bracket through the water pump bracket, and the motor, oil cooler, and multi-function controller are fixed to the frame between the air-cooled radiator and the battery bracket; the water pump bracket is fixed to the bottom of the battery bracket with bolts, and the installation height of the water pump bracket must meet the following requirements: the bottom of the water pump bracket is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump bracket and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle.

[0007] P3. CAD-aided modeling determines the hose model path connecting each component and the bending radius of each bend point, and calculates the hose model length. When the ratio of the bending radius to the hose diameter at the bend point is within a set threshold, the model is retained as the final design structure. When the ratio of the bending radius to the hose diameter at the bend point exceeds the set threshold, the bend at that point is canceled in the model design, but the previously calculated hose model length is retained as the actual selection length of the standard straight hose at that point.

[0008] Preferably, the threshold is set to 3.5.

[0009] Another aspect of the present invention is to provide a non-transient readable recording medium for storing one or more programs containing multiple instructions, which, when executed, cause the processing circuit to perform the above-described hybrid vehicle motor cooling device design method.

[0010] Another aspect of the present invention provides a hybrid vehicle motor cooling device design system, including a processing circuit and a memory electrically coupled thereto. The memory is configured to store at least one program, the program containing multiple instructions. The processing circuit runs the program and can execute the above-described hybrid vehicle motor cooling device design method.

[0011] This invention also provides a hybrid vehicle motor cooling device, including an air-cooled radiator, a water pump, a multi-function controller, an oil cooler, and an expansion tank. These components are sequentially connected via hoses to form a main circulation loop: air-cooled radiator → water pump → multi-function controller → oil cooler → air-cooled radiator. A hose connecting the air-cooled radiator to the water pump section of this main circulation loop is led out via a T-junction to the expansion tank for water flow regulation and venting. An oil pipe within the oil cooler is connected to the motor cooling jacket to form a motor cooling circulation loop. The air-cooled radiator and battery bracket are respectively positioned on the outer sides of the left and right longitudinal beams of the vehicle. The water pump assembly is fixed to the bottom of the battery bracket via a water pump mount. The motor, oil cooler, and multi-function controller are fixed to the vehicle frame between the air-cooled radiator and the battery bracket. The water pump mount is fixed to the bottom of the battery bracket with bolts. The installation height of the water pump mount must meet the following requirements: the bottom of the water pump mount is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump mount and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle. The configuration and length of the hose are determined according to step P3 in the aforementioned hybrid vehicle motor cooling device design method.

[0012] Compared with the prior art, the hybrid vehicle motor cooling device and its design method, recording medium and system provided by the present invention have the following advantages:

[0013] The rational layout of the main circulation pipeline and branch expansion chambers enables tiered energy absorption for the cooling of the all-in-one controller and water pump assembly, smooths out fluctuations in cooling water supply, expels air, reduces cavitation, thereby improving pipeline lifespan and reducing the possibility of leakage.

[0014] The spatial arrangement of this invention places most of the cooling circulation system in the convection air passage between the cooler and the battery, which is beneficial for heat dissipation and cooling. This optimization further reduces the total length of the cooling pipes, saving space for the system.

[0015] The cooling pipe type and length determined by the method of this invention enable the cooling system to accurately perform its heat dissipation function while having a smaller total hose length, which facilitates integration and prevents kinking during installation, thus ensuring the stable and reliable heat dissipation performance of the product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cooling circulation system arrangement in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the expansion tank installation in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the heat sink assembly installation in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the installation of the cooling water pump assembly in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the cooling circulation system structure in an embodiment of the present invention;

[0021] Figure 6 This is a model diagram of the rubber hose of the expansion tank branch pipeline in an embodiment of the present invention;

[0022] Figure 7 This is the actual design drawing of the rubber hose of the expansion tank branch pipeline in the embodiment of the present invention;

[0023] Figure 8 This is a model diagram of the water inlet hose of the heat dissipation body in an embodiment of the present invention;

[0024] Figure 9 This is the actual design drawing of the water inlet hose of the heat dissipation body in the embodiment of the present invention;

[0025] Figure 10 This is a model diagram of the water outlet hose of the heat dissipation body in an embodiment of the present invention;

[0026] Figure 11 This is the actual design drawing of the water outlet hose of the heat dissipation body in the embodiment of the present invention;

[0027] Figure 12 This is a structural design drawing of a three-way steel pipe in an embodiment of the present invention;

[0028] Figure 13 This is a schematic diagram of the degassing system assembly in an embodiment of the present invention;

[0029] Figure 14 This is a schematic diagram of the oil cooler structure in an embodiment of the present invention;

[0030] Figure 15 This is a schematic diagram showing the longitudinal relative positions of the bottom of the water pump and the bottom of the oil tank bracket in an embodiment of the present invention;

[0031] Figure 16 This is a schematic diagram showing the lateral relative positions of the bottom of the water pump and the bottom of the oil tank bracket in an embodiment of the present invention;

[0032] In the diagram: 1. Chassis; 2. Degassing system assembly; 3. Radiator assembly; 4. Radiator bracket assembly; 5. Water pump assembly; 6. Cooling piping; 7. All-in-one controller; 8. Oil cooler;

[0033] 21. Expansion tank; 211. Water return port; 212. Air outlet; 213. Pressure cover; 214. Vent; 215. Expansion tank body; 2151. Upper gas space; 2152. Lower liquid space; 216. Mounting base; 22. Expansion tank bracket; 23. Water return hose; 24. Degassing hose; A25. Bracket; 26. Cable tie;

[0034] 31. Heatsink body; 32. Fan; 311. Radiator inlet; 312. Radiator outlet; 313. Drain outlet;

[0035] 51. Water pump; 52. Water pump bracket; 53. Water pump rubber bracket; 54. Battery bracket; 511. Water pump inlet; 512. Water pump outlet;

[0036] 61. Radiator outlet hose; 62. T-joint steel pipe; 63. Water pump inlet hose; 64. Water pump outlet hose; 65. Oil cooler inlet hose; 66. Oil cooler outlet hose; 67. Radiator inlet hose;

[0037] 621. Bend pipe; 622. Straight pipe; 623. Fixed bracket; Bend pipe 621; 6211. Bend inlet; 6212. Bend outlet; 6221. Straight outlet;

[0038] 711. All-in-one controller inlet; 712. All-in-one controller outlet;

[0039] 81. Plate heat exchanger; 811. Oil cooler inlet; 812. Oil cooler outlet; 813. Oil cooler support; 814. Oil inlet; 815. Oil outlet;

[0040] 231, 232, 233, 234, 235, and 236 are all bends on the return hose model;

[0041] 671, 672, 673, 674, 675, 676, 677, 678, 679-A, 679-B, 679-C, 679-D, 679-E) are all bending points on the radiator inlet hose model;

[0042] 611, 612, 613, 614, 615, 616, 617, 618, and 619 are all bends on the radiator outlet hose model. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without innovative effort are within the scope of protection of the present invention.

[0044] like Figures 1-5 As shown, an embodiment of a design method for a hybrid vehicle motor cooling device includes the following steps:

[0045] P1. Design of the cooling water circulation path of the hybrid vehicle motor cooling device: After being cooled by the radiator body 31, the cooling water enters the water pump 51 for pressurization and pumping out. After flowing through the multi-in-one controller 7, it enters the oil cooler 8 to continue absorbing heat. Finally, it returns to the radiator body 31 and exhausts the heat to the outside of the vehicle through the fan 32. A branch is provided before entering the water pump 51 to enter the expansion tank 21 for regulating the water volume and exhausting the air. The cooling water and the cooling oil that carries away the heat from the motor exchange heat in the oil cooler 8.

[0046] P2. Design of the fixed positions of each component on the cooling water circulation path: The radiator assembly 3 and the battery bracket 54 are respectively placed on the outside of the left and right longitudinal beams of the frame 1; the water pump assembly 5 is fixed to the bottom of the battery bracket 54 by the water pump rubber bracket 53 (i.e., the water pump bracket in the invention content); the motor, oil cooler 8, and multi-function controller 7 are fixed on the frame 1 between the radiator assembly 3 and the battery bracket 54; the bottom of the water pump rubber bracket 53 and the battery bracket 54 are fixed by bolts; the installation height of the water pump rubber bracket 53 must meet the following requirements: the bottom of the water pump rubber bracket 53 is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump rubber bracket 53 and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle.

[0047] P3. CAD-aided modeling determines the hose model path connecting each component and the bending radius of each bend point, and calculates the hose model length. When the ratio of the bending radius to the hose diameter at the bend point is within 3.5, the model is retained as the final design structure. When the ratio of the bending radius to the hose diameter at the bend point exceeds 3.5, the bend at that point is canceled in the model design, but the previously calculated hose model length is retained as the actual selection length of the standard straight hose at that point.

[0048] like Figure 6 , Figure 7 As shown, taking the return hose 23 as an example, the four bending points (231, 232, 233, 237) at both ends of the return hose model are retained as a shaped tube because the ratio of the bending radius to the hose diameter at the bending point is within 3.5. The bending points (234, 235, 236) in the middle are only simulated in the model to represent the actual pipeline route in the digital model. These bending points (234, 235, 236) are canceled in the actual parts, that is, the middle section is made into a straight pipe, and the actual length of the pipeline is determined according to the unfolded length in the model.

[0049] Similarly, such as Figure 8 , Figure 9 As shown, only one end of the radiator inlet pipe model (671) is retained because the ratio of the bending radius to the diameter of the hose at the bending point is within 3.5. The rest is made into a straight pipe, and the length of the straight pipe is determined according to the unfolded length of the model.

[0050] like Figure 10 , Figure 11 As shown, the ratio of the bending radius to the diameter of the hose at all the bending points (611, 612, 613, 614, 615, 616, 617, 618, 619) on the radiator outlet pipe model exceeds 3.5. In actual design, the pipe is made into a straight pipe, and the length of the straight pipe is determined according to the unfolded length of the model.

[0051] like Figure 1 As shown, an embodiment of a hybrid vehicle motor cooling device includes a frame 1, a degassing system assembly 2, a radiator assembly 3, a radiator bracket assembly 4, a water pump assembly 5, cooling pipes 6, a multi-function controller 7, and an oil cooler 8. The radiator assembly 3 and the battery bracket 54 are respectively placed on the outer sides of the left and right longitudinal beams of the frame 1; the water pump assembly 5 is fixed below the battery bracket 54 by a water pump rubber bracket 53; the motor, oil cooler 8, and multi-function controller 7 are fixed on the frame 1 between the radiator assembly 3 and the battery bracket 54; the water pump rubber bracket 53 is fixed to the bottom of the battery bracket 54 by bolts, and the installation height of the water pump rubber bracket 53 must meet the following requirements: the bottom of the water pump rubber bracket 53 is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump rubber bracket 53 and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle.

[0052] like Figure 2 As shown, the degassing system assembly 2 includes an expansion tank 21, an expansion tank bracket 22, a return water hose 23, a degassing hose 24, a bracket A25, and cable ties 26. The expansion tank 21 is bolted to the expansion tank bracket 22, and the expansion tank bracket 22 is bolted to the upper wing and belly of the frame 1. One end of the return water hose 23 is connected to the return water inlet 211 of the expansion tank 21 and fixed with a clamp, while the other end is connected to a T-shaped steel pipe 62 and fixed with a clamp. One end of the degassing hose 24 is connected to the air outlet 212 of the expansion tank 21 and fixed with a clamp, while the other end is connected to the radiator outlet 313 and fixed with a clamp. The bracket A25 and cable ties 26 are used to fix the return water hose 23 so that it is laid in a fixed direction.

[0053] like Figure 13 As shown, the expansion tank 21 is equipped with a water return port 211, an air outlet 212, a pressure cover 213, an air vent 214, an expansion tank body 215, and a mounting base 216;

[0054] The function of the degassing system assembly 2 is to allow manual unscrewing of the pressure cap 213 and replenishment of water through the filling port at the top of the expansion tank 21 when the system coolant is below the specified value. When the system is working, the coolant circulates, and the air in the coolant flows to the lower liquid space 2152 (shaded part in the figure) of the expansion tank 215 and is discharged into the upper gas space 2151 of the expansion tank 215. When the gas pressure in the expansion tank 21 exceeds a certain limit, the pressure valve built into the pressure cap 213 of the expansion tank 21 will open, and some gas will be discharged into the atmosphere through the vent pipe 214.

[0055] like Figure 3 As shown, the radiator assembly 3 consists of a radiator body 31 and a fan 32. The radiator body 31 is provided with a radiator inlet 311, a radiator outlet 312, and a drain outlet 313. The radiator assembly 3 is mounted on the radiator bracket assembly 4, and the radiator bracket assembly 4 is mounted on the belly of the vehicle frame 1 by bolts.

[0056] like Figure 3 As shown, the radiator bracket assembly 4 is fixed to the vehicle frame with bolts, the radiator assembly 3 is fixed to the radiator bracket assembly 4 with bolts, and the fan 32 is mounted on the heat sink body 31 with bolts.

[0057] The function of radiator assembly 3 is to facilitate heat exchange between the cooling water and the air, that is, to dissipate the system's heat to the air.

[0058] like Figure 4As shown, the water pump assembly 5 includes a water pump 51, a water pump bracket 52, a water pump rubber bracket 53, and a battery bracket 54; the water pump 51 is fixed by the water pump rubber bracket 53, the water pump rubber bracket 53 is fixed to the water pump bracket 52 by bolts, the water pump bracket 52 is fixed to the battery bracket 54 by bolts, and the battery bracket 54 is mounted on the vehicle frame 1 by bolts.

[0059] The function of water pump 51 is to convert electrical energy into mechanical energy, provide kinetic energy to the cooling system, and circulate the coolant in the pipes. The details of determining its vertical position are as follows: To avoid air resistance in the water system, the water pump assembly 5 should be positioned as low as possible, but not at the lowest point of the vehicle chassis, to prevent the water pump assembly 5 from being the first point of impact when the vehicle chassis collides with road obstacles. To achieve this goal, the following two technical measures are adopted:

[0060] The first technical measure, such as Figure 15 As shown, the water pump rubber bracket 53 is positioned directly below the battery bracket 54. A certain gap, value C, is maintained between the water pump rubber bracket 53 and the vehicle's longitudinal through-circle in the vertical direction. Similarly, a certain gap, value D, is maintained between the fuel tank bracket and the vehicle's longitudinal through-circle in the vertical direction. The gap value C must be greater than the gap value D to calculate the minimum height at which the water pump can be installed. The gaps between both the water pump rubber bracket 53 and the fuel tank bracket and the vehicle's longitudinal through-circle improve the vehicle's longitudinal passability, generally preventing collisions with road obstacles.

[0061] The second technical measure, such as Figure 16 The height of the water pump rubber bracket 53 shown is greater than that of the nearby fuel tank bracket, with a height difference of B. When the vehicle collides with a large obstacle on the road, it will hit the fuel tank bracket instead of the water pump rubber bracket 53, which also protects the safety of the water pump assembly 5 to a certain extent.

[0062] like Figure 5 As shown, the cooling pipe 6 includes a radiator outlet hose 61, a T-shaped steel pipe 62, a water pump inlet hose 63, a water pump outlet hose 64, an oil cooler inlet hose 65, and an oil cooler outlet hose 66.

[0063] like Figure 12 As shown, the three-way steel pipe 62 is composed of a bend pipe 621, a straight pipe 622, and a fixed bracket 623, and is connected by welding. The bend pipe 621 is provided with a bend inlet 6211 and a bend outlet 6212. The straight pipe 622 is provided with a straight outlet 6221. The fixed bracket 623 is provided with a mounting hole 6231 for connecting to the frame 1.

[0064] One end of the radiator outlet hose 61 is connected to the radiator outlet 312, and the other end is connected to the bend inlet 6211 of the tee pipe 62; one end of the water pump inlet hose 63 is connected to the bend inlet 6212 of the tee pipe 62, and the other end is connected to the water pump inlet 511; one end of the water pump outlet hose 64 is connected to the water pump outlet 512, and the other end is connected to the inlet 711 of the multi-function controller; one end of the oil cooler inlet hose 65 is connected to the outlet 712 of the multi-function controller, and the other end is connected to the inlet 811 of the oil cooler; one end of the oil cooler outlet hose 66 is connected to the outlet 812 of the oil cooler, and the other end is connected to the radiator inlet 311.

[0065] The connection sequence of the above-mentioned pipelines is also the flow direction of the cooling water of the water pump assembly. That is, one of the technical features of this invention is that the cooling water after the radiator assembly 3 is cooled flows to the water pump 51, then to the multi-function controller 7, and then to the oil cooler 8. The heat generated by the multi-function controller 7 is less than the heat dissipation of the motor assembly (the heat dissipation of the motor assembly is achieved by the heat exchange of the oil cooler 8). This ensures that both the multi-function controller and the motor assembly can be adequately cooled.

[0066] The heat dissipation medium for the motor assembly is oil. The heat generated by mechanical movement is transferred to the oil. The oil then transfers this heat to the cooling water via a plate heat exchanger inside the oil cooler 8. The cooling water then circulates back to the radiator assembly 3 for external heat dissipation, while the low-temperature oil flows back to continue absorbing heat dissipated by the moving parts. For example... Figure 14 As shown, the oil cooler 8 consists of a plate heat exchanger 81, an oil cooler inlet 811, an oil cooler outlet 812, a bracket 813, an oil inlet 814, and an oil outlet 815; the oil cooler 8 is mounted on the gearbox connected to the motor assembly via the oil cooler bracket 813.

[0067] The working principle of the oil cooler 8 is as follows: when the oil is working, the oil temperature will rise and enter the oil cooler 8 through the oil inlet 814. After passing through the plate heat exchanger 81, part of the heat is exchanged with the coolant and part of the heat is exchanged with the atmosphere. The cooled oil flows back to the motor assembly through the oil outlet 815. Cooling water flows into the plate heat exchanger 81 from the oil cooler inlet 811 and flows out of the plate heat exchanger 81 from the oil cooler outlet 812.

[0068] Another technical feature of this invention is the position of the three-way steel pipe 62. The three-way steel pipe 62 is located near the water pump inlet 511. As described above, the bend inlet 6211 of the three-way steel pipe 62 connects to the radiator outlet 312, the bend outlet 6212 connects to the water pump inlet 511, and the straight outlet 6221 connects to the expansion tank return outlet 211 via the return hose 23. Its function is that when the cooling water circulation circuit expands in volume due to temperature increase or generates gas, part of the cooling water will flow to the expansion tank 21, while the gas will flow to the expansion tank 21. The cooling water is discharged into the atmosphere through the expansion tank 21, allowing the system to operate normally. When the cooling water in the system evaporates or the cavity needs to be replenished after the gas is discharged, the cooling water flows back to the circulation system from the expansion tank 21. The function of the three-way steel pipe 62 connected to the water pump inlet 511 is to always ensure that the pressure at the water pump inlet is greater than the pressure at the outlet, ensuring that the water pump operates normally. In addition, when there is air in the water pump 51 or too much air in the circulation system, water can be quickly drawn from the expansion tank 21 to prevent the water pump 51 from running dry and causing system failure.

[0069] The configuration and length of various connecting tubing in this device are determined according to step P3 in the aforementioned method embodiment.

[0070] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computers or available storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0071] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0072] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0073] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0074] The technical solution of the present invention is "a non-transitory readable recording medium" by compiling the above methods and steps into a program and storing it on a hard disk or other non-transitory storage medium; and the technical solution of the present invention is "a hybrid vehicle motor cooling device design system" by electrically connecting the storage medium to a computer processor and designing a hybrid vehicle motor cooling device through data processing.

[0075] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A design method for a hybrid vehicle motor cooling device, characterized in that... Includes the following steps: P1. Design of the cooling water circulation path for the hybrid vehicle motor cooling system: After being cooled by the air-cooled radiator, the cooling water enters the water pump for pressurization and is pumped out. After flowing through the multi-in-one controller, it enters the oil cooler to continue absorbing heat, and finally returns to the air-cooled radiator, where the heat is exhausted to the outside of the vehicle by the fan. A branch line to the expansion tank is provided before entering the water pump to regulate the water volume and exhaust the air. The cooling water and the cooling oil that carries away the heat from the motor exchange heat in the oil cooler. P2. Design the fixed positions of each component on the cooling water circulation path: The air-cooled radiator and battery bracket are placed on the outside of the left and right longitudinal beams of the vehicle, respectively; the water pump assembly is fixed to the bottom of the battery bracket through the water pump bracket, and the motor, oil cooler, and multi-function controller are fixed to the frame between the air-cooled radiator and the battery bracket; the water pump bracket is fixed to the bottom of the battery bracket with bolts, and the installation height of the water pump bracket must meet the following requirements: the bottom of the water pump bracket is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump bracket and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle. P3. CAD-aided modeling determines the hose model path connecting each component and the bending radius of each bend point, and calculates the hose model length. When the ratio of the bending radius to the hose diameter at the bend point is within a set threshold, the model is retained as the final design structure. When the ratio of the bending radius to the hose diameter at the bend point exceeds the set threshold, the bend is canceled in the model design, but the previously calculated hose model length is retained as the actual selection length of the standard straight hose.

2. The design method for a hybrid vehicle motor cooling device as described in claim 1, characterized in that... Set the threshold to 3.

5.

3. A non-transitory readable recording medium for storing one or more programs containing multiple instructions, characterized in that, When the instruction is executed, the processing circuit will perform the hybrid vehicle motor cooling device design method according to any one of claims 1-2.

4. A hybrid vehicle motor cooling device design system, comprising a processing circuit and a memory electrically coupled thereto, characterized in that, The memory is configured to store at least one program, the program containing multiple instructions, and the processing circuit runs the program to execute the design method of a hybrid vehicle motor cooling device according to any one of claims 1-2.

5. A hybrid vehicle motor cooling device, characterized in that, The system includes an air-cooled radiator, water pump, multi-function controller, oil cooler, and expansion tank. These components are sequentially connected via hoses to form a main circulation loop. A hose connecting the air-cooled radiator to the water pump in this main circulation loop extends via a T-junction to the expansion tank, used for water flow regulation and venting. The oil pipes inside the oil cooler are connected to the motor cooling jacket, forming a motor cooling circulation loop. The air-cooled radiator and battery bracket are positioned on the outer sides of the left and right longitudinal beams of the vehicle, respectively. The water pump assembly is fixed to the vehicle via a water pump mount. Below the battery bracket, the motor, oil cooler, and multi-function controller are fixed to the vehicle frame between the air-cooled radiator and the battery bracket. The water pump bracket is fixed to the bottom of the battery bracket with bolts. The installation height of the water pump bracket must meet the following requirements: the bottom of the water pump bracket is higher than the bottom of the fuel tank bracket of the hybrid vehicle, and the distance between the bottom of the water pump bracket and the longitudinal circle of the vehicle is greater than the distance between the bottom of the fuel tank bracket and the longitudinal circle of the vehicle. The configuration and length of the hose are determined in step P3 of the design method of a hybrid vehicle motor cooling device according to claim 1.

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