Layout method, device and equipment for multiple gears in new energy automobile

Abstract

The invention discloses a layout method, device and equipment for multiple gears in a new energy automobile, a storage medium and a product, and belongs to the technical field of new energy automobiles. Comprising the steps of determining a gear arrangement space of multiple gears of the new energy automobile; based on the gear arrangement space, multiple first candidate arrangement angles are determined, and the first candidate arrangement angles are candidate angles between gear shafts of the multiple gears; for any first candidate arrangement angle in the multiple first candidate arrangement angles, the overall transmission error excitation of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle is determined, and the overall transmission error excitation is used for representing the howling degree of the multi-gear; based on the overall transmission error excitation of the multi-gear when the arrangement angle of the multi-gear is a plurality of first candidate arrangement angles, determining a first target arrangement angle with the minimum overall transmission error excitation from the plurality of first candidate arrangement angles; and based on the first target arrangement angle, arrangement information of the multi-gear is determined.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular to a layout method, device and equipment for multi-gears in new energy vehicles. Background Art

[0002] With the continuous development of new energy vehicle technology, new energy vehicles are becoming more and more popular and the competition is becoming more and more fierce. Consumers have higher and higher requirements for the NVH (Noise, Vibration, Harshness) performance of new energy vehicles. Therefore, reducing vibration noise is imminent. The gear noise generated by multi-gear is one of the most important noise sources of new energy vehicles. And because new energy vehicles do not have the cover of traditional engine noise, this poses a greater challenge to the layout of the gears. Summary of the invention

[0003] The embodiment of the present application provides a method, device and equipment for arranging multi-linked gears in a new energy vehicle. The technical solution is as follows:

[0004] In one aspect, a method for arranging multi-gears in a new energy vehicle is provided, the method comprising:

[0005] Determine the gear arrangement space of the multi-stage gear of the new energy vehicle, where the gear arrangement space is the space allowed for the arrangement of the multi-stage gear;

[0006] Based on the gear arrangement space, determining a plurality of first candidate arrangement angles, wherein the first candidate arrangement angles are candidate angles between gear shafts of the multi-stage gear;

[0007] For any first candidate arrangement angle among the plurality of first candidate arrangement angles, determining an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, wherein the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear;

[0008] Based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of first candidate arrangement angles, determining a first target arrangement angle at which the overall transmission error excitation is minimized from the plurality of first candidate arrangement angles;

[0009] Based on the first target arrangement angle, arrangement information of the multi-stage gear is determined.

[0010] In a possible implementation, the determining of the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle includes:

[0011] Determine the phases of the transmission error excitations of the multiple meshing points of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different phases of the transmission error excitations, and the transmission error excitations of the meshing points are used to indicate the degree of howling generated by the meshing points;

[0012] Based on the phases of the transmission error excitations of the plurality of meshing points, an overall transmission error excitation of the multi-stage gear is determined.

[0013] In another possible implementation, the determining the phases of the transmission error excitations of the plurality of meshing points of the multi-stage gears when the arrangement angle of the multi-stage gears is the first candidate arrangement angle includes:

[0014] Determine the transmission errors of the multiple meshing points when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different transmission errors, and the transmission error of the meshing point is the deviation between the actual position and the theoretical position when the multi-gear meshes through the meshing point;

[0015] For any meshing point among the multiple meshing points, Fourier decomposition is performed on the transmission error of the meshing point to obtain the phase of the transmission error excitation of the meshing point.

[0016] In another possible implementation, determining a plurality of first candidate arrangement angles based on the gear arrangement space includes:

[0017] Based on the gear arrangement space, determining a first arrangement angle range of the multi-stage gears, wherein the first arrangement angle range is used to constrain the angle between the gear shafts of the multi-stage gears;

[0018] Based on a first adjustment granularity, a plurality of first candidate arrangement angles are determined from the first arrangement angle range.

[0019] In another possible implementation, the determining a plurality of first candidate arrangement angles from the first arrangement angle range based on the first adjustment granularity includes:

[0020] Determine the axis where the multi-gear is located to obtain a plurality of gear axes, and determine the first gear axis from the plurality of gear axes;

[0021] Fix the first gear shaft, and rotate other gear shafts among the multiple gear shafts within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles; or fix other gear shafts among the multiple gear shafts, and rotate the first gear shaft within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles.

[0022] In another possible implementation, determining the first arrangement angle range of the multi-gear based on the gear arrangement space includes:

[0023] determining a plurality of second candidate arrangement angles from the gear arrangement space based on a second adjustment granularity, wherein the second adjustment granularity is greater than the first adjustment granularity;

[0024] For any second candidate arrangement angle among the plurality of second candidate arrangement angles, determining an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the second candidate arrangement angle;

[0025] Based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of second candidate arrangement angles, determining a plurality of second target arrangement angles at which the overall transmission error excitation is less than a preset error excitation from the plurality of second candidate arrangement angles;

[0026] The plurality of second target arrangement angles are combined into a first arrangement angle range of the multi-stage gear.

[0027] On the other hand, a layout device for multi-gear in a new energy vehicle is provided, the device comprising:

[0028] A first determination module is used to determine the gear arrangement space of the multi-stage gear of the new energy vehicle, where the gear arrangement space is the space allowed for the multi-stage gear to be arranged;

[0029] A second determination module is used to determine a plurality of first candidate arrangement angles based on the gear arrangement space, wherein the first candidate arrangement angles are candidate angles between the gear shafts of the multi-stage gear;

[0030] A third determination module is used to determine, for any first candidate arrangement angle among the plurality of first candidate arrangement angles, an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, wherein the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear;

[0031] A fourth determination module is used to determine a first target arrangement angle with a minimum overall transmission error excitation from the plurality of first candidate arrangement angles based on an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of first candidate arrangement angles;

[0032] A fifth determination module is used to determine the arrangement information of the multi-gear based on the first target arrangement angle.

[0033] In one possible implementation, the third determination module is used to determine the phases of the transmission error excitations of multiple meshing points of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different phases of the transmission error excitations, and the transmission error excitations of the meshing points are used to indicate the degree of howling generated by the meshing points; based on the phases of the transmission error excitations of the multiple meshing points, the overall transmission error excitation of the multi-gear is determined.

[0034] In another possible implementation, the third determination module is used to determine the transmission errors of the multiple meshing points when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different transmission errors, and the transmission error of the meshing point is the deviation between the actual position and the theoretical position when the multi-gear meshes through the meshing point; for any meshing point among the multiple meshing points, the transmission error of the meshing point is Fourier decomposed to obtain the phase of the transmission error excitation of the meshing point.

[0035] In another possible implementation, the second determination module is used to determine a first arrangement angle range of the multi-gear based on the gear arrangement space, wherein the first arrangement angle range is used to constrain the angle between the gear shafts of the multi-gear; and based on a first adjustment granularity, determine a plurality of first candidate arrangement angles from the first arrangement angle range.

[0036] In another possible implementation, the second determination module is used to determine the axis on which the multi-gear is located, obtain multiple gear axis, and determine the first gear axis from the multiple gear axis; fix the first gear axis, and rotate the other gear axis among the multiple gear axis within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles; or fix the other gear axis among the multiple gear axis, and rotate the first gear axis within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles.

[0037] In another possible implementation, the second determination module is used to determine multiple second candidate arrangement angles from the gear arrangement space based on a second adjustment granularity, and the second adjustment granularity is greater than the first adjustment granularity; for any second candidate arrangement angle among the multiple second candidate arrangement angles, determine the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the second candidate arrangement angle; based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the multiple second candidate arrangement angles, determine multiple second target arrangement angles whose overall transmission error excitation is less than a preset error excitation from the multiple second candidate arrangement angles; and combine the multiple second target arrangement angles into a first arrangement angle range of the multi-stage gear.

[0038] On the other hand, a computer device is provided, which includes a processor and a memory, wherein the memory stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the above-mentioned layout method of multi-gears in new energy vehicles.

[0039] On the other hand, a computer-readable storage medium is provided, in which at least one program code is stored. The at least one program code is loaded and executed by a processor to implement the above-mentioned layout method of multi-gears in new energy vehicles.

[0040] On the other hand, a computer program product is provided, wherein the product stores at least one program code, and the at least one program code is used to be executed by a processor to implement the above-mentioned layout method of multi-gears in new energy vehicles.

[0041] In an embodiment of the present application, when laying out multi-stage gears, not only the gear layout space is considered, but also the overall transmission error excitation of the multi-stage gears is considered, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gears; therefore, selecting the first target layout angle with the smallest overall transmission error excitation from multiple first candidate layout angles can reduce the noise of the multi-stage gears; therefore, the embodiment of the present application can not only make the laid out multi-stage gears meet the requirements of the overall layout space and size of the whole box, that is, take into account lightweight, but also reduce the noise of the multi-stage gears, that is, ensure the NVH performance of the gears.

[0042] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic diagram of an implementation environment of a layout method of multi-gears in a new energy vehicle shown in an exemplary embodiment of the present application;

[0044] Figure 2 is a flow chart of a layout method of multi-gears in a new energy vehicle shown in an exemplary embodiment of the present application;

[0045] Figure 3 is a schematic diagram of a multi-gear shown in an exemplary embodiment of the present application;

[0046] Figure 4 is a schematic diagram of the arrangement angle of multi-gears shown in an exemplary embodiment of the present application;

[0047] Figure 5 is a schematic diagram of meshing points of multi-gears shown in an exemplary embodiment of the present application;

[0048] Figure 6 is a schematic diagram of the phase of the overall transmission error excitation of multiple first candidate arrangement angles shown in an exemplary embodiment of the present application;

[0049] Figure 7 is a flow chart of a layout method of multi-gears in a new energy vehicle shown in an exemplary embodiment of the present application;

[0050] Figure 8 is a block diagram of a layout device of multi-gears in a new energy vehicle shown in an exemplary embodiment of the present application;

[0051] Fig. 9 It is a block diagram of a computer device shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to make the technical solutions and advantages of the present application clearer, the implementation methods of the present application are described in further detail below.

[0053] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0054] It should be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.) and signals involved in this application are all authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards of relevant countries and regions. For example, the gear layout space involved in this application is obtained with full authorization.

[0055] Please refer to Figure 1 , which shows a schematic diagram of the implementation environment of a method for arranging multi-link gears in a new energy vehicle shown in an exemplary embodiment of the present application. The implementation environment includes a computer device 101 and a new energy vehicle 102. The new energy vehicle 102 is provided with multi-link gears, and the multi-link gears include a plurality of gears meshed in sequence. The number of gears included in the multi-link gears can be set and changed according to the needs of the new energy vehicle 102. In the embodiment of the present application, the number of gears included in the multi-link gears is not specifically limited; for example, the multi-link gears include 3 gears or 4 gears, etc. In the embodiment of the present application, the computer device 101 is used to determine the layout of the multi-link gears; and the computer device 101 uses CAE (Computer Aided Engineering, computer-aided engineering in engineering design) research and analysis methods to determine the layout of the multi-link gears.

[0056] In one possible implementation, the development trend of the transmission of new energy vehicles is strong power, good economy, compact structure and light weight. In order to meet the power and economy, new energy vehicles often need to match motors with relatively large outer diameters; if it is a multi-speed multi-mode architecture, multiple clutches with large outer diameters must be arranged on the input shaft of the engine of the new energy vehicle. In order to avoid mutual interference between the clutch and the drive motor, there must be a large center distance between the motor drive shaft and the engine input shaft; with such a large center distance, it is difficult to use only one pair of gears (2 gears) to transmit the motor power from the motor drive shaft to the engine input shaft; therefore, in order to match such a large center distance, it is necessary to add an idle gear between the two gears, thus forming a structural form in which three or more gears are simultaneously engaged, that is, multi-link gears.

[0057] In another possible implementation, in a common form of multi-power coupling, the motor power and the engine power are ultimately transmitted to the output shaft and coupled on the output shaft. In order to reduce the intermediate shaft and the transmission gear pair, multiple power sources share a gear pair, that is, the gear shared by the motor and the engine is a multi-link gear.

[0058] The computer device 101 can be a tablet computer, a laptop computer, a desktop computer or a smart phone, but is not limited thereto. For example, the computer device 101 is a laptop computer used by a developer of the new energy vehicle 102. The developer uses the computer device 101 to set the layout of the multi-link gears of the new energy vehicle 102.

[0059] In the related art, when laying out multi-stage gears, they are often only roughly arranged according to the gear layout space, so that the multi-stage gears can be arranged in the gear layout space, without considering the NVH design issues, which often causes the phase superposition of the transmission error excitation of the multi-stage gears, and the transmission error excitation of the multi-stage gears is used to indicate the degree of howling generated by the multi-stage gears; and the phase superposition of the transmission error excitation of the multi-stage gears will cause the multi-stage gears to produce a greater degree of howling, thereby generating greater noise from the multi-stage gears, and further leading to more serious NVH problems.

[0060] In an embodiment of the present application, when laying out multi-stage gears, not only the gear layout space is considered, but also the overall transmission error excitation of the multi-stage gears is considered, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gears; therefore, selecting the first target layout angle with the smallest overall transmission error excitation from multiple first candidate layout angles can reduce the noise of the multi-stage gears; therefore, the embodiment of the present application can not only make the laid out multi-stage gears meet the requirements of the overall layout space and size of the whole box, that is, take into account lightweight, but also reduce the noise of the multi-stage gears, that is, ensure the NVH performance of the gears.

[0061] Please refer to Figure 2 , which shows a flow chart of a layout method of multi-gear in a new energy vehicle according to an exemplary embodiment of the present application. Figure 2 , the method comprising:

[0062] Step 201: The computer device determines the gear arrangement space of the multi-stage gear of the new energy vehicle, and the gear arrangement space is the space allowed for the arrangement of the multi-stage gear.

[0063] The developers will set up the design drawing of the new energy vehicle in advance, involving the gear layout space of the multi-gear marked in the drawing; in this step, the computer device determines the gear layout space of the multi-gear from the design drawing of the new energy vehicle.

[0064] The multi-linked gears can be multi-linked gears between the motor and the engine of a new energy vehicle or multi-linked gears in a multi-power coupling form; therefore, the solution provided in the embodiment of the present application can be applied to the design of the gear shaft system of the multi-linked gear or coaxial system in the multi-power coupling structure of the new energy transmission. The NVH design method for the shaft system arrangement of the multi-linked gear or coaxial system provided in the embodiment of the present application can be used in the gear shaft design of any transmission or mechanical system with high NVH performance requirements. The specific form of the design can be optimally designed in each dimension according to the actual structural form and analysis results.

[0065] Step 202: The computer device determines a plurality of first candidate arrangement angles based on the gear arrangement space, where the first candidate arrangement angles are candidate angles between gear shafts of the multi-gear.

[0066] A multi-gear system consists of multiple gears meshing in sequence; for example, see Figure 3 , the multi-gear includes gear 1, gear 2 and gear 3 meshing in sequence, gear 1, gear 2 and gear 3; Figure 3 The gear shaft where gear 1 is located, the gear shaft where gear 2 is located, and the gear shaft where gear 3 is located are marked. The first candidate arrangement angle can be the angle between the lines formed by the center points of two adjacent gears in the multiple gears meshing in sequence; for example, please refer to Figure 4 , gear 1 and gear 2 are meshed, gear 2 and gear 3 are meshed, the center point of gear 1 and the center point of gear 2 form a first boundary line, the center point of gear 2 and the center point of gear 3 form a second boundary line, and the first boundary line and the second boundary line form a layout angle.

[0067] Step 203: For any first candidate arrangement angle among the multiple first candidate arrangement angles, the computer device determines the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear.

[0068] The overall transmission error excitation is positively correlated with the degree of howling generated by the multi-stage gears, that is, the greater the overall transmission error excitation, the greater the howling generated by the multi-stage gears, that is, the greater the noise generated by the multi-stage gears; and the smaller the overall transmission error excitation, the smaller the howling generated by the multi-stage gears, that is, the smaller the noise generated by the multi-stage gears.

[0069] In a possible implementation, this step can be implemented by the following steps (1) and (2), including:

[0070] (1) The computer device determines the phases of the transmission error excitations of multiple meshing points of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different phases of the transmission error excitations, and the transmission error excitations of the meshing points are used to indicate the degree of howling generated by the meshing points.

[0071] The phase of the transmission error excitation is used to indicate the direction of the transmission error excitation. When the phases of the transmission error excitations of multiple meshing points are exactly opposite, the transmission error excitations of multiple meshing points can cancel each other out, thereby reducing the whistling generated by the multi-gear gears and thus reducing the noise. The meshing point refers to the position where two gears mesh; for example, please refer to Figure 5 ,exist Figure 5 The meshing points of gear 1 and gear 2 are marked, and the meshing points of gear 2 and gear 3 are also marked.

[0072] In a possible implementation, this step can be implemented by following the steps (1-1) to (1-2), including:

[0073] (1-1) The computer device determines the transmission errors of multiple meshing points when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different transmission errors, and the transmission error of the meshing point is the deviation between the actual position and the theoretical position when the multi-gear meshes through the meshing point.

[0074] For any meshing point, the computer device determines the actual position and theoretical position of the meshing point, and determines the deviation between the actual position and the theoretical position to obtain the transmission error of the meshing point; since there are multiple meshing points, the computer device can determine the transmission errors of multiple meshing points.

[0075] (1-2) For any meshing point among the multiple meshing points, the computer device performs Fourier decomposition on the transmission error of the meshing point to obtain the phase of the transmission error excitation of the meshing point.

[0076] The phase of the transmission error excitation of the meshing point can be the phase of the transmission error fundamental frequency of the meshing point or the phase of the transmission error multiple frequency. In addition, the computer device can also obtain the amplitude of the transmission error excitation of the meshing point by Fourier decomposing the transmission error of the meshing point. The amplitude of the transmission error excitation of the meshing point can be the amplitude of the transmission error fundamental frequency of the meshing point or the amplitude of the transmission error multiple frequency.

[0077] (2) The computer device determines the overall transmission error excitation of the multi-gear based on the phase of the transmission error excitation of multiple meshing points.

[0078] The computer device determines the superposition of the phases of the transmission error excitations of the multiple meshing points to obtain the overall transmission error excitation of the multi-link gear. For example, the multiple meshing points include meshing point 1 and meshing point 2, and the phases of the transmission error excitations of meshing point 1 and meshing point 2 are +30 and -30 respectively, then the superposition of the phases of the transmission error excitations of the multiple meshing points is 0, and the transmission error excitations of the multiple meshing points cancel each other out, thereby reducing the overall transmission error excitation of the multi-link gear.

[0079] In one possible implementation, the computer device can also determine the overall transmission error excitation of the multi-gear in combination with the amplitude of the transmission error excitation; accordingly, this step can be: the computer device determines the overall transmission error excitation of the multi-gear based on the phase and amplitude of the transmission error excitation of multiple meshing points.

[0080] The step of determining the overall transmission error excitation of the multi-link gear by the computer device based on the phase and amplitude of the transmission error excitation of the multiple meshing points may be: the computer device determines the phase and amplitude of the transmission error excitation of the multiple meshing points and superimposes them to obtain the overall transmission error excitation of the multi-link gear. For example, the multiple meshing points include meshing point 1 and meshing point 2, the phases of the transmission error excitation of meshing point 1 and meshing point 2 are +30 and -30 respectively, and the amplitudes of the transmission error excitation of meshing point 1 and meshing point 2 are both 10, then the transmission error excitation of the multiple meshing points is just completely delivered, thereby reducing the overall transmission error excitation of the multi-link gear.

[0081] Step 204: The computer device determines a first target arrangement angle with a minimum overall transmission error excitation from among the multiple first candidate arrangement angles based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is a plurality of first candidate arrangement angles.

[0082] The overall transmission error excitation is used to indicate the degree of howling produced by the multi-gear; therefore, selecting the first target arrangement angle with the smallest overall transmission error excitation from multiple first candidate arrangement angles can reduce the noise of the multi-gear.

[0083] In one possible implementation, when the overall transmission error excitation includes a phase and an amplitude, the computer device determines a first target arrangement angle with the smallest phase from multiple first candidate arrangement angles based on the phase of the overall transmission error excitation of the multi-gear when the arrangement angle of the multi-gear is a plurality of first candidate arrangement angles; when there are multiple overall transmission error excitations with the same and smallest phases, the computer device determines the overall transmission error excitation with the smallest amplitude from the multiple overall transmission error excitations, and determines the first candidate arrangement angle corresponding to the overall transmission error excitation as the first target arrangement angle.

[0084] For example, see Figure 6 , the first candidate arrangement angles are angle 1, angle 2, angle 3, angle 4 and angle 5. Figure 6 The phases of the overall transfer error excitations of angles 1, 2, 3, 4, and 5 are marked in the figure. Figure 6 It can be seen that the phase of the overall transfer error excitation corresponding to angle 3 is the smallest, so the first target arrangement angle is determined to be angle 3.

[0085] In the embodiment of the present application, since the dimension of the gear arrangement space is combined when determining multiple first candidate arrangement angles, the embodiment of the present application can combine dimensions such as the size of the entire box and lightweight to determine the layout of the multi-gear.

[0086] Step 205: The computer device determines the layout information of the multi-gear based on the first target layout angle.

[0087] The arrangement information of the multi-stage gears is used to indicate the arrangement angle between the gear shafts of the multi-stage gears, that is, the computer device sets the arrangement angle between the gear shafts of the multi-stage gears as the first target arrangement angle.

[0088] In an embodiment of the present application, when laying out multi-stage gears, not only the gear layout space is considered, but also the overall transmission error excitation of the multi-stage gears is considered, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gears; therefore, selecting the first target layout angle with the smallest overall transmission error excitation from multiple first candidate layout angles can reduce the noise of the multi-stage gears; therefore, the embodiment of the present application can not only make the laid out multi-stage gears meet the requirements of the overall layout space and size of the whole box, that is, take into account lightweight, but also reduce the noise of the multi-stage gears, that is, ensure the NVH performance of the gears.

[0089] Please refer to Figure 7 , which shows a flow chart of a layout method of multi-gear in a new energy vehicle shown in an exemplary embodiment of the present application. Figure 7 , the method comprising:

[0090] Step 701: The computer device determines the gear arrangement space of the multi-stage gear of the new energy vehicle, and the gear arrangement space is the space allowed for the arrangement of the multi-stage gear.

[0091] In some embodiments, this step is the same as step 201 and will not be repeated here.

[0092] Step 702: The computer device determines a first arrangement angle range of the multi-stage gears based on the gear arrangement space, where the first arrangement angle range is used to constrain the angle between the gear shafts of the multi-stage gears.

[0093] In the embodiment of the present application, the computer equipment adopts CAE research and analysis means, firstly taking the feasible candidate arrangement angle, and taking the inter-axis angle as the design variable for angle optimization according to a certain axis rotation method. According to the design space, the first round of optimization can first adopt a slightly larger angle interval to perform rough optimization, and then preliminarily determine the better design angle range based on the comparison results, and then perform the second round of optimization to further narrow the angle range and complete the precise optimization. Accordingly, this step can be implemented by the following steps (1) to (4), including:

[0094] (1) The computer device determines a plurality of second candidate arrangement angles from the gear arrangement space based on a second adjustment granularity, where the second adjustment granularity is greater than the first adjustment granularity.

[0095] This design method first considers the available space for optimizing the shaft arrangement in combination with the boundary of the entire box, and then adopts the form of fixing one shaft while the other shafts rotate, or rotating one shaft while the other shafts are fixed, according to the feasible space range. The shaft system is rotated clockwise or counterclockwise, and the shafts are in different relative positions, so that the angle between the shafts changes, and the gear meshing position changes accordingly. Finally, the gear meshing is adjusted by adjusting the angle between the shafts.

[0096] In a possible implementation, multiple second candidate arrangement angles are determined by fixing one of the axes and rotating the other axes; accordingly, this step may be: the computer device determines the axis where the multi-linked gear is located, obtains multiple gear axes, and determines the second gear axis from the multiple gear axes; the first gear axis is fixed, and the other gear axes among the multiple gear axes are rotated in the gear arrangement space through the second adjustment granularity to obtain multiple second candidate arrangement angles. When selecting the other gear axes among the multiple gear axes in the gear layout space, the rotation may be clockwise or counterclockwise.

[0097] In another possible implementation, multiple second candidate layout angles are determined by rotating one of the axes and fixing the other axes; accordingly, this step may be: the computer device determines the axis where the multi-linked gear is located, obtains multiple gear axes, and determines the second gear axis from the multiple gear axes; fixes the other gear axes in the multiple gear axes, and rotates the second gear axis in the gear layout space through the second adjustment granularity to obtain multiple second candidate layout angles. When rotating the second gear axis in the gear layout space, it can be rotated clockwise or counterclockwise.

[0098] (2) For any second candidate arrangement angle among the plurality of second candidate arrangement angles, the computer device determines the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the second candidate arrangement angle.

[0099] The process of overall transmission error excitation of the multi-stage gears when the computer device determines that the arrangement angle of the multi-stage gears is the second candidate arrangement angle is similar to the process of overall transmission error excitation of the multi-stage gears when the computer device determines that the arrangement angle of the multi-stage gears is the first candidate arrangement angle, and will not be repeated here.

[0100] (3) The computer device determines, based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is a plurality of second candidate arrangement angles, a plurality of second target arrangement angles whose overall transmission error excitation is less than a preset error excitation from the plurality of second candidate arrangement angles.

[0101] (4) The computer device combines the multiple second target arrangement angles into a first arrangement angle range of the multi-gear.

[0102] In one possible implementation, when multiple second target arrangement angles are continuous angles, the computer device directly combines the multiple second target arrangement angles into a first arrangement angle range of the multi-gear; when the multiple second target arrangement angles are not continuous angles, the computer device determines multiple continuous angles from the multiple second target arrangement angles, and combines the multiple continuous angles into a first arrangement angle range; or, when the multiple second target arrangement angles are not continuous angles, the computer device determines the maximum arrangement angle range composed of the multiple second target arrangement angles as the first arrangement angle range; or, when the multiple second target arrangement angles are not continuous angles, the computer device determines the minimum arrangement angle range composed of the multiple second target arrangement angles as the first arrangement angle range.

[0103] Step 703: The computer device determines a plurality of first candidate arrangement angles from a first arrangement angle range based on the first adjustment granularity.

[0104] In one possible implementation, a computer device determines a plurality of first candidate arrangement angles by fixing one of the axes and rotating the other axes; correspondingly, this step may be: the computer device determines the axis where the multi-gear is located to obtain a plurality of gear axes, and determines a first gear axis from the plurality of gear axes; fixes the first gear axis, and rotates the other gear axes among the plurality of gear axes within a first arrangement angle range through a first adjustment granularity to obtain a plurality of first candidate arrangement angles.

[0105] In another possible implementation, the computer device determines multiple second candidate arrangement angles by rotating one of the axes and fixing the other axes; accordingly, this step may be: the computer device determines the axis where the multi-gear is located, obtains multiple gear axes, and determines the first gear axis from the multiple gear axes; fixes the other gear axes among the multiple gear axes, and rotates the first gear axis within the first arrangement angle range through a first adjustment granularity to obtain multiple first candidate arrangement angles.

[0106] Step 704: For any first candidate arrangement angle among the multiple first candidate arrangement angles, the computer device determines the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear.

[0107] In some embodiments, this step is the same as step 203 and will not be repeated here.

[0108] Step 705: The computer device determines a first target arrangement angle with a minimum overall transmission error excitation from multiple first candidate arrangement angles based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is multiple first candidate arrangement angles.

[0109] In some embodiments, this step is the same as step 204 and will not be repeated here.

[0110] Step 706: The computer device determines the layout information of the multi-gear based on the first target layout angle.

[0111] In some embodiments, this step is the same as step 205 and will not be repeated here.

[0112] In an embodiment of the present application, when determining multiple first candidate arrangement angles, a two-round optimization method is used to determine them; wherein, the first round of optimization may first use a slightly larger angle interval to perform a rough optimization, and based on the comparison results, preliminarily determine a better design angle range, and then perform a second round of optimization to further narrow the angle range and complete precise optimization, thereby improving the efficiency of determining multiple first candidate arrangement angles.

[0113] In an embodiment of the present application, when laying out multi-stage gears, not only the gear layout space is considered, but also the overall transmission error excitation of the multi-stage gears is considered, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gears; therefore, selecting the first target layout angle with the smallest overall transmission error excitation from multiple first candidate layout angles can reduce the noise of the multi-stage gears; therefore, the embodiment of the present application can not only make the laid out multi-stage gears meet the requirements of the overall layout space and size of the whole box, that is, take into account lightweight, but also reduce the noise of the multi-stage gears, that is, ensure the NVH performance of the gears.

[0114] Please refer to Figure 8 , which shows a block diagram of a layout device for multi-gear in a new energy vehicle according to an exemplary embodiment of the present application. The device includes:

[0115] The first determination module 801 is used to determine the gear arrangement space of the multi-stage gear of the new energy vehicle, where the gear arrangement space is the space allowed for the multi-stage gear to be arranged;

[0116] A second determining module 802 is used to determine a plurality of first candidate arrangement angles based on the gear arrangement space, where the first candidate arrangement angles are candidate angles between the gear shafts of the multi-stage gear;

[0117] A third determination module 803 is used to determine, for any first candidate arrangement angle among the plurality of first candidate arrangement angles, an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, wherein the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear;

[0118] A fourth determination module 804 is configured to determine a first target arrangement angle with a minimum overall transmission error excitation from the plurality of first candidate arrangement angles based on an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of first candidate arrangement angles;

[0119] The fifth determination module 805 is used to determine the arrangement information of the multi-gear based on the first target arrangement angle.

[0120] In one possible implementation, the third determination module 803 is used to determine the phases of the transmission error excitations of multiple meshing points of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different phases of the transmission error excitations, and the transmission error excitations of the meshing points are used to indicate the degree of howling generated by the meshing points; based on the phases of the transmission error excitations of the multiple meshing points, the overall transmission error excitation of the multi-gear is determined.

[0121] In another possible implementation, the third determination module 803 is used to determine the transmission errors of the multiple meshing points when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different transmission errors, and the transmission error of the meshing point is the deviation between the actual position and the theoretical position when the multi-gear meshes through the meshing point; for any meshing point among the multiple meshing points, the transmission error of the meshing point is Fourier decomposed to obtain the phase of the transmission error excitation of the meshing point.

[0122] In another possible implementation, the second determination module 802 is used to determine a first arrangement angle range of the multi-gear based on the gear arrangement space, wherein the first arrangement angle range is used to constrain the angle between the gear shafts of the multi-gear; and based on a first adjustment granularity, determine a plurality of first candidate arrangement angles from the first arrangement angle range.

[0123] In another possible implementation, the second determination module 802 is used to determine the axis on which the multi-gear is located, obtain multiple gear axis, and determine the first gear axis from the multiple gear axis; fix the first gear axis, and rotate the other gear axis among the multiple gear axis within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles; or fix the other gear axis among the multiple gear axis, and rotate the first gear axis within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles.

[0124] In another possible implementation, the second determination module 802 is used to determine multiple second candidate arrangement angles from the gear arrangement space based on a second adjustment granularity, and the second adjustment granularity is greater than the first adjustment granularity; for any second candidate arrangement angle among the multiple second candidate arrangement angles, determine the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the second candidate arrangement angle; based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the multiple second candidate arrangement angles, determine multiple second target arrangement angles whose overall transmission error excitation is less than a preset error excitation from the multiple second candidate arrangement angles; and combine the multiple second target arrangement angles into a first arrangement angle range of the multi-stage gear.

[0125] In an embodiment of the present application, when laying out multi-stage gears, not only the gear layout space is considered, but also the overall transmission error excitation of the multi-stage gears is considered, and the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gears; therefore, selecting the first target layout angle with the smallest overall transmission error excitation from multiple first candidate layout angles can reduce the noise of the multi-stage gears; therefore, the embodiment of the present application can not only make the laid out multi-stage gears meet the requirements of the overall layout space and size of the whole box, that is, take into account lightweight, but also reduce the noise of the multi-stage gears, that is, ensure the NVH performance of the gears.

[0126] It should be noted that the layout device of the multi-gear in the new energy vehicle provided in the above embodiment only uses the division of the above functional modules as an example when performing the layout of the multi-gear in the new energy vehicle. In actual application, the above functional distribution can be completed by different functional modules as needed, that is, the internal structure of the computer device is divided into different functional modules to complete all or part of the functions described above. In addition, the layout device of the multi-gear in the new energy vehicle provided in the above embodiment and the layout method embodiment of the multi-gear in the new energy vehicle belong to the same concept. The specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0127] Fig. 91 is a block diagram of a computer device 900 provided in an embodiment of the present application. The computer device 900 may be a portable mobile terminal, such as a smart phone, a tablet computer, an MP3 player (Moving Picture Experts Group Audio Layer III), an MP4 player (Moving Picture Experts Group Audio Layer IV), a laptop computer or a desktop computer. The computer device 900 may also be referred to as a user device, a portable terminal, a laptop terminal, a desktop terminal or other names.

[0128] Typically, the computer device 900 includes a processor 901 and a memory 902 .

[0129] The processor 901 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 901 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 901 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 901 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 901 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0130] The memory 902 may include one or more computer-readable storage media, which may be non-transitory. The memory 902 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 902 is used to store at least one program code, which is executed by the processor 901 to implement the layout method of multi-gear in a new energy vehicle provided in the method embodiment of the present application.

[0131] In some embodiments, the computer device 900 may further optionally include: a peripheral device interface 903 and at least one peripheral device. The processor 901, the memory 902 and the peripheral device interface 903 may be connected via a bus or a signal line. Each peripheral device may be connected to the peripheral device interface 903 via a bus, a signal line or a circuit board. Specifically, the peripheral device includes: at least one of a radio frequency circuit 904, a display screen 905, a camera assembly 906, an audio circuit 907 and a power supply 908.

[0132] The peripheral device interface 903 may be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 901 and the memory 902. In some embodiments, the processor 901, the memory 902, and the peripheral device interface 903 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 901, the memory 902, and the peripheral device interface 903 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0133] The radio frequency circuit 904 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 904 communicates with communication networks and other communication devices through electromagnetic signals. The radio frequency circuit 904 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals. Optionally, the radio frequency circuit 904 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, and the like. The radio frequency circuit 904 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the World Wide Web, a metropolitan area network, an intranet, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 904 may also include circuits related to NFC (Near Field Communication), which is not limited in this application.

[0134] The display screen 905 is used to display the UI (User Interface). The UI may include graphics, text, icons, videos, and any combination thereof. When the display screen 905 is a touch display screen, the display screen 905 also has the ability to collect touch signals on the surface or above the surface of the display screen 905. The touch signal can be input to the processor 901 as a control signal for processing. At this time, the display screen 905 can also be used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the display screen 905 can be one, set on the front panel of the computer device 900; in other embodiments, the display screen 905 can be at least two, respectively set on different surfaces of the computer device 900 or in a folding design; in other embodiments, the display screen 905 can be a flexible display screen, set on the curved surface or folding surface of the computer device 900. Even, the display screen 905 can also be set to a non-rectangular irregular shape, that is, a special-shaped screen. The display screen 905 can be made of materials such as LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode, organic light-emitting diode).

[0135] The camera assembly 906 is used to capture images or videos. Optionally, the camera assembly 906 includes a front camera and a rear camera. Typically, the front camera is arranged on the front panel of the terminal, and the rear camera is arranged on the back of the terminal. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, the fusion of the main camera and the wide-angle camera to realize panoramic shooting and VR (Virtual Reality) shooting function or other fusion shooting functions. In some embodiments, the camera assembly 906 may also include a flash. The flash can be a monochrome temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0136] The audio circuit 907 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals and input them into the processor 901 for processing, or input them into the radio frequency circuit 904 to achieve voice communication. For the purpose of stereo acquisition or noise reduction, there may be multiple microphones, which are respectively arranged at different parts of the computer device 900. The microphone may also be an array microphone or an omnidirectional acquisition microphone. The speaker is used to convert the electrical signal from the processor 901 or the radio frequency circuit 904 into sound waves. The speaker may be a traditional film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signal into sound waves audible to humans, but also convert the electrical signal into sound waves inaudible to humans for purposes such as ranging. In some embodiments, the audio circuit 907 may also include a headphone jack.

[0137] The power supply 908 is used to power various components in the computer device 900. The power supply 908 can be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 908 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery that is charged through a wired line, and a wireless rechargeable battery is a battery that is charged through a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0138] In some embodiments, the computer device 900 further includes one or more sensors 909 , including but not limited to: an acceleration sensor 910 , a gyroscope sensor 911 , a pressure sensor 912 , an optical sensor 913 , and a proximity sensor 914 .

[0139] The acceleration sensor 910 can detect the magnitude of acceleration on the three coordinate axes of the coordinate system established by the computer device 900. For example, the acceleration sensor 910 can be used to detect the components of gravity acceleration on the three coordinate axes. The processor 901 can control the display screen 905 to display the user interface in a horizontal view or a vertical view according to the gravity acceleration signal collected by the acceleration sensor 910. The acceleration sensor 910 can also be used to collect game or user motion data.

[0140] The gyro sensor 911 can detect the body direction and rotation angle of the computer device 900, and the gyro sensor 911 can cooperate with the acceleration sensor 910 to collect the user's 3D actions on the computer device 900. The processor 901 can implement the following functions based on the data collected by the gyro sensor 911: motion sensing (such as changing the UI according to the user's tilt operation), image stabilization during shooting, game control, and inertial navigation.

[0141] The pressure sensor 912 can be set on the side frame of the computer device 900 and / or the lower layer of the display screen 905. When the pressure sensor 912 is set on the side frame of the computer device 900, it can detect the user's grip signal of the computer device 900, and the processor 901 performs left and right hand recognition or shortcut operations according to the grip signal collected by the pressure sensor 912. When the pressure sensor 912 is set on the lower layer of the display screen 905, the processor 901 controls the operability controls on the UI interface according to the user's pressure operation on the display screen 905. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0142] The optical sensor 913 is used to collect the ambient light intensity. In one embodiment, the processor 901 can control the display brightness of the display screen 905 according to the ambient light intensity collected by the optical sensor 913. Specifically, when the ambient light intensity is high, the display brightness of the display screen 905 is increased; when the ambient light intensity is low, the display brightness of the display screen 905 is reduced. In another embodiment, the processor 901 can also dynamically adjust the shooting parameters of the camera assembly 906 according to the ambient light intensity collected by the optical sensor 913.

[0143] The proximity sensor 914, also called a distance sensor, is usually disposed on the front panel of the computer device 900. The proximity sensor 914 is used to collect the distance between the user and the front of the computer device 900. In one embodiment, when the proximity sensor 914 detects that the distance between the user and the front of the computer device 900 is gradually decreasing, the processor 901 controls the display screen 905 to switch from the screen-on state to the screen-off state; when the proximity sensor 914 detects that the distance between the user and the front of the computer device 900 is gradually increasing, the processor 901 controls the display screen 905 to switch from the screen-off state to the screen-on state.

[0144] Those skilled in the art will understand that Fig. 9 The structure shown in the figure does not constitute a limitation on the computer device 900, and the computer device 900 may include more or less components than those shown in the figure, or combine some components, or adopt a different arrangement of components.

[0145] The embodiment of the present application also provides a computer-readable storage medium, in which at least one program code is stored, and the at least one program code is loaded and executed by a processor to implement the layout method of multi-gear in a new energy vehicle described in any of the above implementations. Optionally, the storage medium can be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium can be a ROM (Read-Only Memory), a RAM (Random Access Memory), a CD-ROM (Compact Disc Read-Only Memory), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0146] An embodiment of the present application also provides a computer program product, which stores at least one program code, and the at least one program code is loaded and executed by a processor to implement the layout method of multi-gears in a new energy vehicle as shown in the above embodiments.

[0147] In some embodiments, the computer program product involved in the embodiments of the present application may be deployed and executed on a computer device, or on multiple computer devices located at one location, or on multiple computer devices distributed at multiple locations and interconnected by a communication network. Multiple computer devices distributed at multiple locations and interconnected by a communication network may constitute a blockchain system.

[0148] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0149] The above description is only for the purpose of facilitating those skilled in the art to understand the technical solution of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for arranging multi-gears in a new energy vehicle, characterized in that: The method comprises: Determine the gear arrangement space of the multi-stage gear of the new energy vehicle, where the gear arrangement space is the space allowed for the arrangement of the multi-stage gear; Based on the gear arrangement space, determining a plurality of first candidate arrangement angles, wherein the first candidate arrangement angles are candidate angles between gear shafts of the multi-stage gear; For any first candidate arrangement angle among the plurality of first candidate arrangement angles, determining an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, wherein the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear; Based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of first candidate arrangement angles, determining a first target arrangement angle at which the overall transmission error excitation is minimized from the plurality of first candidate arrangement angles; Based on the first target arrangement angle, arrangement information of the multi-stage gear is determined.

2. The method according to claim 1, characterized in that The overall transmission error excitation of the multi-stage gear when determining the arrangement angle of the multi-stage gear to be the first candidate arrangement angle includes: Determine the phases of the transmission error excitations of the multiple meshing points of the multi-gear when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different phases of the transmission error excitations, and the transmission error excitations of the meshing points are used to indicate the degree of howling generated by the meshing points; Based on the phases of the transmission error excitations of the plurality of meshing points, an overall transmission error excitation of the multi-stage gear is determined.

3. The method according to claim 2, characterized in that The determining of the phases of the transmission error excitations of the plurality of meshing points of the multi-stage gears when the arrangement angle of the multi-stage gears is the first candidate arrangement angle comprises: Determine the transmission errors of the multiple meshing points when the arrangement angle of the multi-gear is the first candidate arrangement angle, different meshing points correspond to different transmission errors, and the transmission error of the meshing point is the deviation between the actual position and the theoretical position when the multi-gear meshes through the meshing point; For any meshing point among the multiple meshing points, Fourier decomposition is performed on the transmission error of the meshing point to obtain the phase of the transmission error excitation of the meshing point.

4. The method according to claim 1, characterized in that The step of determining a plurality of first candidate arrangement angles based on the gear arrangement space comprises: Based on the gear arrangement space, determining a first arrangement angle range of the multi-stage gears, wherein the first arrangement angle range is used to constrain the angle between the gear shafts of the multi-stage gears; Based on a first adjustment granularity, a plurality of first candidate arrangement angles are determined from the first arrangement angle range.

5. The method according to claim 4, characterized in that The determining a plurality of first candidate arrangement angles from the first arrangement angle range based on the first adjustment granularity includes: Determine the axis where the multi-gear is located to obtain a plurality of gear axes, and determine the first gear axis from the plurality of gear axes; Fix the first gear shaft, and rotate other gear shafts among the multiple gear shafts within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles; or fix other gear shafts among the multiple gear shafts, and rotate the first gear shaft within the first arrangement angle range through the first adjustment granularity to obtain the multiple first candidate arrangement angles.

6. The method according to claim 4, characterized in that The determining, based on the gear arrangement space, a first arrangement angle range of the multi-gear comprises: determining a plurality of second candidate arrangement angles from the gear arrangement space based on a second adjustment granularity, wherein the second adjustment granularity is greater than the first adjustment granularity; For any second candidate arrangement angle among the plurality of second candidate arrangement angles, determining an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the second candidate arrangement angle; Based on the overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of second candidate arrangement angles, determining a plurality of second target arrangement angles at which the overall transmission error excitation is less than a preset error excitation from the plurality of second candidate arrangement angles; The plurality of second target arrangement angles are combined into a first arrangement angle range of the multi-stage gear.

7. A layout device for multi-gear in a new energy vehicle, characterized in that: The device comprises: A first determination module is used to determine the gear arrangement space of the multi-stage gear of the new energy vehicle, where the gear arrangement space is the space allowed for the multi-stage gear to be arranged; A second determination module is used to determine a plurality of first candidate arrangement angles based on the gear arrangement space, wherein the first candidate arrangement angles are candidate angles between the gear shafts of the multi-stage gear; A third determination module is used to determine, for any first candidate arrangement angle among the plurality of first candidate arrangement angles, an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the first candidate arrangement angle, wherein the overall transmission error excitation is used to indicate the degree of howling generated by the multi-stage gear; A fourth determination module is used to determine a first target arrangement angle with a minimum overall transmission error excitation from the plurality of first candidate arrangement angles based on an overall transmission error excitation of the multi-stage gear when the arrangement angle of the multi-stage gear is the plurality of first candidate arrangement angles; A fifth determination module is used to determine the arrangement information of the multi-gear based on the first target arrangement angle.

8. A computer device, characterized in that: The computer device includes a processor and a memory, wherein the memory stores at least one program code, and the at least one program code is loaded and executed by the processor to implement the layout method of multi-gears in a new energy vehicle as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: At least one program code is stored in the storage medium, and the at least one program code is loaded and executed by the processor to implement the layout method of multi-gears in a new energy vehicle as described in any one of claims 1 to 6.

10. A computer program product, characterized in that The product stores at least one program code, and the at least one program code is used to be executed by a processor to implement the layout method of multi-gears in a new energy vehicle as described in any one of claims 1 to 6.

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