Whole vehicle high-voltage line layout optimization method and electric wide-body dumper

Abstract

The invention provides a whole vehicle high-voltage line layout optimization method and an electric wide-body dumper, and relates to the field of whole vehicle high-voltage line layout, and the adopted scheme is that the method comprises the following steps: S01, establishing a coordinate system in three-dimensional software; s02, determining a wiring topological graph of all the electrical components and the minimum bending radius R of different high-voltage lines; s03, determining a plurality of electrical component layout forms on the premise of meeting trafficability and maintainability, and numbering the electrical component layout forms; s04, in the coordinate system, determining the three-dimensional coordinates of two terminals A and B of each high-voltage line and the wiring direction u of the terminal A and the wiring direction v of the terminal B under the layout of the electrical components with the corresponding numbers; s05, calculating the length Lj of each high-voltage line; s06, calculating the total length L of the high-voltage line of the whole vehicle And S07, comparing the sum L of the lengths under each electrical part layout, and determining an optimal layout. According to the method, the total length of the high-voltage line under each electrical part layout can be quickly obtained, so that the optimal electrical part layout is more quickly determined, and the design time is shortened.

Description

Technical Field

[0001] The present invention relates to the field of whole vehicle high voltage line layout, and in particular to a whole vehicle high voltage line layout optimization method and an electric wide-body dump truck. Background Art

[0002] The vehicle high-voltage wire is simply an insulated wire that can work under high and low temperature conditions. It is mainly composed of copper alloy wires and high-strength insulators, and the safety and stability in high-voltage environments are ensured by external insulation materials. The diameter and length of the vehicle high-voltage wire vary. Generally speaking, the diameter of the high-voltage wire will be selected according to the requirements of current and voltage, and the shorter the better, as long as possible, in order to ensure the use effect, manufacturing cost and lightweight.

[0003] In related technologies, in order to determine the total length of the high-voltage wires of the entire vehicle, designers first perform three-dimensional modeling, preliminarily determine the positions of related electrical components, design the corresponding high-voltage wires, measure the length of each high-voltage wire in the model, and then add up the lengths of all the high-voltage wires to determine the total length of the high-voltage wires of the entire vehicle. In the optimization design, when the positions of related electrical components are changed, the corresponding high-voltage wires are redesigned and the lengths are measured until the total length of the high-voltage wires under each electrical component layout method is measured. After comparison, the shortest total length of the high-voltage wires and the corresponding electrical component layout method are determined, and the layout is performed in this way as the optimal method.

[0004] With the above technical solution, each time a new layout of electrical components is obtained, the corresponding high-voltage line needs to be redesigned and then measured, which is a large workload, prolongs the design time, reduces production efficiency, and at the same time, the center of curvature of the two terminals of the high-voltage line cannot be determined, affecting the accuracy of modeling and thus affecting the measurement of the length of the high-voltage line. Summary of the invention

[0005] In order to solve the technical problem in the above-mentioned prior art that the total length of the high-voltage wires of the whole vehicle is determined with a large workload and low accuracy during the optimization design process, the present invention provides a method for optimizing the layout of high-voltage wires of the whole vehicle and an electric wide-body dump truck, which does not require designing the high-voltage wires after changing the layout of electrical components, and can quickly and accurately obtain the total length of the high-voltage wires under each electrical component layout, thereby determining the optimal electrical component layout more quickly and shortening the design time.

[0006] In a first aspect, the present invention provides a method for optimizing the layout of high-voltage lines of a vehicle to solve the above technical problems, comprising the following steps:

[0007] S01: Establish a coordinate system in 3D software;

[0008] S02: Determine the wiring topology of all electrical components and the minimum bending radius R of different high-voltage lines;

[0009] S03: Determine the layout of various electrical components and number them on the premise of meeting the requirements of passability and maintainability;

[0010] S04: Determine, in the coordinate system, the three-dimensional coordinates of the two connection terminals A and B of each high-voltage line under the layout of the electrical components with corresponding numbers, as well as the wiring direction u of the A terminal and the wiring direction v of the B terminal;

[0011] S05: Calculate the length L of each high-voltage line j ;

[0012] S06: Calculate the total length L of the high-voltage wires of the entire vehicle;

[0013] S07: Compare the total length L of each electrical component layout to determine the optimal layout.

[0014] The present invention determines the length of each high-voltage line by coordinates and routing directions in a three-dimensional coordinate system, and determines the optimal layout form by comparing the total length of the high-voltage lines under each electrical component layout form. Compared with the prior art, the present invention does not need to model the high-voltage lines after changing the layout, which reduces the workload and shortens the design cycle. At the same time, the calculation of the total length of the high-voltage lines is not affected by the accuracy of the high-voltage line model, and the calculation result is more accurate.

[0015] Furthermore, in S05, the following steps are included:

[0016] S051: Calculate the three-dimensional coordinates of the center of curvature Q1 and the three-dimensional coordinates of the inflection point O1 of each wiring terminal A, and calculate the three-dimensional coordinates of the center of curvature Q2 and the three-dimensional coordinates of the inflection point O2 of the wiring B;

[0017] S052: Calculate L according to the following formula j length:

[0018]

[0019] Furthermore, in S051, the three-dimensional coordinates of Q1, O1, Q2 and O2 are first calculated according to the following formula:

[0020]

[0021] Then, according to the direction of the high-voltage line, the coordinates determined by the above formula are screened through the following formula, and four sets of valid coordinates of Q1, O1, Q2 and O2 are obtained.

[0022]

[0023] In the four sets of effective coordinates of Q1, O1, Q2 and O2, the corresponding high-voltage line lengths are calculated according to the following formulas:

[0024]

[0025] By comparison, the minimum high-voltage line length is selected as the L of this high-voltage line. j , the coordinates corresponding to the minimum high-voltage line length are the final coordinates of Q1, O1, Q2 and O2.

[0026] Through the above calculation method, the present invention can accurately determine the minimum length of the corresponding high-voltage line from multiple sets of coordinates, with a small amount of calculation, thereby improving the accuracy of the method and accurately guiding the modeling of the high-voltage line during the final vehicle modeling.

[0027] Furthermore, the calculations were performed using Matlab software.

[0028] Furthermore, in S06, weight values ​​W are assigned to high-voltage lines of different thicknesses. i The cross-sectional area of ​​the thickest high-voltage line is S1, and the cross-sectional area of ​​other high-voltage lines is S j ,

[0029] Weight W i =S j / S1, S1 weight value 1,

[0030] L=∑W j L j .

[0032] The present invention assigns weight values ​​to high-voltage wires of different thicknesses, can guide the layout of electrical components in combination with the diameter of the high-voltage wires, and achieves control of the cost of the entire vehicle.

[0033] Furthermore, in S01, creo or catia three-dimensional software is used.

[0034] Furthermore, a coordinate system is established with the front axle center plane, the lower wing surface of the frame, and the frame center plane, with the origin O being the intersection point of the three surfaces, the rearward direction of the front axle center plane being the positive direction of the X-axis, the rightward direction of the frame center plane being Y, and the upward direction of the lower wing surface of the frame being Z.

[0035] Furthermore, in S03, at least three layout forms of the electrical components are provided.

[0036] Furthermore, in S07, the electrical layout form with the smallest total length L is the optimal layout form.

[0037] In a second aspect, the present invention further provides an electric wide-body dump truck, comprising a frame and a cab, wherein the cab is arranged on one side of the front end of the frame, and the above-mentioned vehicle high-voltage line layout optimization method is used to determine the layout of electrical components, the electrical components comprising a power battery system, a motor controller, an air compressor, an electric steering pump and an air-conditioning compressor, the power battery system is arranged on the frame and located on one side of the cab, the motor controller is arranged on the outside of the front end of the frame, the motor controller and the power battery system are respectively arranged on different sides of the frame, the air compressor is arranged on the outside of the frame and located behind the motor controller, and the electric steering pump and the air-conditioning compressor are arranged on the inside of the front end of the frame.

[0038] It can be seen from the above technical solutions that the present invention has the following advantages:

[0039] The present invention provides a whole vehicle high-voltage line layout optimization method and an electric wide-body dump truck. The method determines the length of each high-voltage line by coordinates and routing direction in a three-dimensional coordinate system, and determines the optimal layout form by comparing the sum of the lengths of the high-voltage lines under each electrical component layout form. Compared with the prior art, it is not necessary to model each high-voltage line after changing the layout, so the workload is small and the design cycle is shortened. At the same time, the calculation of the total length of the high-voltage line is not affected by the accuracy of the high-voltage line model, and the calculation result is more accurate. The minimum length of the corresponding high-voltage line can be accurately determined from multiple groups of coordinates, and the calculation amount is small, which improves the accuracy of the method, and can accurately guide the modeling of the high-voltage line when the final whole vehicle is modeled. By assigning weights to high-voltage lines of different thicknesses, the layout of electrical components can be guided in combination with the diameter of the high-voltage line, thereby achieving control of the whole vehicle cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0041] Figure 1 It is a flowchart of a specific implementation mode 1 of the present invention.

[0042] Figure 2 The structure of the second specific embodiment of the present invention is shown in FIG. Figure 1 .

[0043] Figure 3 The structure of the second specific embodiment of the present invention is shown in FIG. Figure 2 .

[0044] In the figure, 1. power battery system; 3. motor controller; 51. air compressor; 52. electric steering pump; 53. air conditioning compressor; 7. vehicle frame. DETAILED DESCRIPTION

[0045] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. Specific implementation method 1

[0047] like Figure 1 As shown, this specific embodiment provides a method for optimizing the layout of high-voltage lines of a vehicle, comprising the following steps:

[0048] S01: Establish a coordinate system in 3D software;

[0049] S02: Determine the wiring topology of all electrical components and the minimum bending radius R of different high-voltage lines;

[0050] S03: Determine the layout of various electrical components and number them on the premise of meeting the requirements of passability and maintainability;

[0051] S04: Determine, in the coordinate system, the three-dimensional coordinates of the two connection terminals A and B of each high-voltage line under the layout of the electrical components with corresponding numbers, as well as the wiring direction u of the A terminal and the wiring direction v of the B terminal;

[0052] S05: Calculate the length L of each high-voltage line j ;

[0053] S06: Calculate the total length L of the high-voltage wires of the entire vehicle;

[0054] S07: Compare the total length L of each electrical component layout to determine the optimal layout.

[0055] This specific implementation method determines the length of each high-voltage line by coordinates and routing direction in a three-dimensional coordinate system, and determines the optimal layout form by comparing the total length of the high-voltage lines under each electrical component layout form. Compared with the prior art, this implementation method does not need to model the high-voltage lines after changing the layout, which reduces the workload and shortens the design cycle. At the same time, the calculation of the total length of the high-voltage lines is not affected by the accuracy of the high-voltage line model, and the calculation result is more accurate.

[0056] Wherein, in S05, Matlab software is used for calculation, and the following steps are included:

[0057] S051: Calculate the three-dimensional coordinates of the center of curvature Q1 and the three-dimensional coordinates of the inflection point O1 of each wiring terminal A, and calculate the three-dimensional coordinates of the center of curvature Q2 and the three-dimensional coordinates of the inflection point O2 of the wiring B;

[0058] S052: Calculate L according to the following formula j length:

[0059]

[0060] In S051, the three-dimensional coordinates of Q1, O1, Q2 and O2 are first calculated according to the following formula:

[0061]

[0062] Then, according to the direction of the high-voltage line, the following formula is used to screen the multiple sets of coordinates determined by the above formulas (theoretically, 16 sets of coordinate combinations can be obtained from the above 12 formulas), and four sets of valid coordinates of Q1, O1, Q2 and O2 are obtained.

[0063]

[0064] In the four sets of effective coordinates of Q1, O1, Q2 and O2, the corresponding high-voltage line lengths are calculated according to the following formulas:

[0065]

[0066] By comparison, the minimum high-voltage line length is selected as the L of this high-voltage line. j , the coordinates corresponding to the minimum high-voltage line length are the final coordinates of Q1, O1, Q2 and O2.

[0067] This specific implementation method determines four groups of valid coordinates through the above calculation method, and only calculates the lengths of high-voltage lines corresponding to the four groups of valid coordinates. There is no need to calculate other coordinate groups, which reduces the amount of calculation. At the same time, through the above 14 formulas, the screening and comparison of each high-voltage line can be realized, and the minimum length of each high-voltage line can be accurately determined, thereby improving the accuracy of this method. In addition, the positions of Q1, O1, Q2 and O2 can be accurately determined. When the final vehicle modeling is carried out, the high-voltage line modeling can be accurately guided to improve the modeling accuracy.

[0068] Since the costs of high-voltage wires of different diameters are different, in order to introduce cost control during the layout of electrical components, in S06 of this specific implementation, weight values ​​W are assigned to high-voltage wires of different thicknesses. i The cross-sectional area of ​​the thickest high-voltage line is S1, and the cross-sectional area of ​​other high-voltage lines is S j ,

[0069] Weight W i =S j / S1, S1 weight value 1,

[0070] L=∑W j L j .

[0072] In S01, creo or catia three-dimensional software is used to establish a coordinate system with the front axle center plane, the frame lower wing surface and the frame center plane, the origin O is the intersection of the three planes, the front axle center plane is the rearward positive direction of the X-axis, the frame center plane is the right direction of the Y-axis, and the frame lower wing surface is the upward direction of the Z-axis; in S03, at least three layout forms of the electrical components are provided; in S07, the electrical layout form with the smallest total length L is the optimal layout form. Specific implementation method 2

[0074] like Figure 2 and Figure 3 As shown, this specific embodiment provides an electric wide-body dump truck, including a frame 7 and a cab, the cab is arranged on the front side of the frame 7, and the layout of electrical components is determined by the vehicle high-voltage line layout optimization method of the first specific embodiment. The electrical components include a power battery system 1, a motor controller 3, an air compressor 51, an electric steering pump 52 and an air-conditioning compressor 53. The power battery system 1 is arranged on the frame 7 and is located on one side of the cab. The motor controller 3 is arranged on the outside of the front end of the frame 7. The motor controller 3 and the power battery system 1 are respectively arranged on different sides of the frame 7. The air compressor 51 is arranged on the outside of the frame 7 and is located behind the motor controller 3. The electric steering pump 52 and the air-conditioning compressor 53 are arranged on the inside of the front end of the frame 7.

[0075] From the above specific implementations, it can be seen that the present invention has the following beneficial effects:

[0076] 1. By determining the length of each high-voltage line by coordinates and routing direction in a three-dimensional coordinate system, and determining the optimal layout form by comparing the sum of the lengths of the high-voltage lines under each electrical component layout form, compared with the prior art, it is not necessary to model each high-voltage line after changing the layout, the workload is small, the design cycle is shortened, and the calculation of the total length of the high-voltage line is not affected by the accuracy of the high-voltage line model, and the calculation result is more accurate;

[0077] 2. The minimum length of the corresponding high-voltage line can be accurately determined from multiple sets of coordinates, with less calculation, which improves the accuracy of the method and can accurately guide the modeling of the high-voltage line when the final vehicle modeling is completed;

[0078] 3. By assigning weights to high-voltage wires of different thicknesses, the layout of electrical components can be guided in combination with the diameter of the high-voltage wires, thereby achieving control over the cost of the entire vehicle.

[0079] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for optimizing the layout of high-voltage lines of a vehicle, characterized in that: The following steps are involved: S01: Establish a coordinate system in 3D software; S02: Determine the wiring topology of all electrical components and the minimum bending radius R of different high-voltage lines; S03: Determine the layout of various electrical components and number them on the premise of meeting passability and maintainability; S04: Determine, in the coordinate system, the three-dimensional coordinates of the two connection terminals A and B of each high-voltage line under the layout of the electrical components with corresponding numbers, as well as the wiring direction u of the A terminal and the wiring direction v of the B terminal; S05: Calculate the length L of each high-voltage line j ; S06: Calculate the total length L of the high-voltage wires of the entire vehicle; S07: Compare the total length L of each electrical component layout to determine the optimal layout.

2. The method for optimizing the layout of high-voltage lines for a whole vehicle according to claim 1, characterized in that: In S05, the following steps are included: S051: Calculate the three-dimensional coordinates of the center of curvature Q1 and the three-dimensional coordinates of the inflection point O1 of each wiring terminal A, and calculate the three-dimensional coordinates of the center of curvature Q2 and the three-dimensional coordinates of the inflection point O2 of the wiring B; S052: Calculate L according to the following formula j length:

3. The method for optimizing the layout of high-voltage lines for a whole vehicle as claimed in claim 2, characterized in that: In S051, the three-dimensional coordinates of Q1, O1, Q2 and O2 are first calculated according to the following formula: Then, according to the direction of the high-voltage line, the coordinates determined by the above formula are screened through the following formula, and four sets of valid coordinates of Q1, O1, Q2 and O2 are obtained. In the four sets of effective coordinates of Q1, O1, Q2 and O2, the corresponding high-voltage line lengths are calculated according to the following formulas: By comparison, the minimum high-voltage line length is selected as the L of this high-voltage line. j , the coordinates corresponding to the minimum high-voltage line length are the final coordinates of Q1, O1, Q2 and O2.

4. The method for optimizing the layout of high-voltage lines for a whole vehicle as claimed in claim 3, characterized in that: The calculations were performed using Matlab software.

5. The method for optimizing the layout of high-voltage lines for a vehicle as described in any one of claims 1 to 4, characterized in that: In S06, weight values ​​W are assigned to high-voltage lines of different thicknesses. i The cross-sectional area of ​​the thickest high-voltage line is S1, and the cross-sectional area of ​​other high-voltage lines is S j , Weight W i =S j / S1, S1 weight value 1, L=∑W j L j .

6. The method for optimizing the layout of high-voltage lines for a whole vehicle according to claim 1, characterized in that: In S01, creo or catia 3D software is used.

7. The method for optimizing the layout of high-voltage lines for a whole vehicle as claimed in claim 6, characterized in that: A coordinate system is established with the front axle center plane, the lower wing surface of the frame, and the center plane of the frame. The origin O is the intersection of the three surfaces. The rearward direction of the front axle center plane is the positive direction of the X-axis, the rightward direction of the frame center plane is Y, and the upward direction of the lower wing surface of the frame is Z.

8. The method for optimizing the layout of high-voltage lines for a whole vehicle as claimed in claim 5, characterized in that: In S03, at least three layout forms of the electrical components are provided.

9. The method for optimizing the layout of high-voltage lines for a whole vehicle as claimed in claim 8, characterized in that: In S07, the electrical layout form with the smallest total length L is the optimal layout form.

10. An electric wide-body dump truck, comprising a frame (7) and a cab, wherein the cab is arranged on one side of the front end of the frame (7), characterized in that: The layout of electrical components is determined by using the vehicle high-voltage line layout optimization method as claimed in claim 9, wherein the electrical components include a power battery system (1), a motor controller (3), an air compressor (51), an electric steering pump (52) and an air conditioning compressor (53), wherein the power battery system (1) is arranged on a vehicle frame (7) and is located on one side of a cab, the motor controller (3) is arranged on the outside of the front end of the vehicle frame (7), the motor controller (3) and the power battery system (1) are arranged on different sides of the vehicle frame (7), the air compressor (51) is arranged on the outside of the vehicle frame (7) and is located behind the motor controller (3), and the electric steering pump (52) and the air conditioning compressor (53) are arranged on the inside of the front end of the vehicle frame (7).

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