Noise reduction method for vehicle, and device, vehicle and medium

By controlling the target motor module of the vehicle's motor module to emit sound and adjusting the frequency based on noise data, the noise problem during vehicle operation is solved, improving vehicle comfort and safety.

WO2026045576A1PCT designated stage Publication Date: 2026-03-05BYD CO LTD
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Patent Information

Application Number
PCT/CN2025/104660
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-30
Filing Date
2025-06-27
Publication Date
2026-03-05

AI Technical Summary

Technical Problem

The noise generated by a vehicle during operation, especially tire friction and wind noise, affects the comfort of people outside the vehicle and the driver, and may even lead to safety problems.

Method used

By controlling the vehicle's motor modules, including identifying target motor modules and adjusting their emission frequency based on noise data, vehicle driving noise can be reduced.

Benefits of technology

It effectively reduces vehicle noise and improves the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

A noise reduction method for a vehicle, the method comprising: controlling at least some electric-motor modules among electric-motor modules of a vehicle to drive the vehicle to travel; and on the basis of noise data collected during the traveling of the vehicle, controlling at least one electric-motor module to produce sound, so as to reduce the running noise of the vehicle. The running noise of a vehicle is reduced by means of controlling an electric-motor module to produce sound, thereby improving the use experience of the vehicle. Further provided are an electronic device for implementing the noise reduction method, and a vehicle and a computer-readable storage medium.
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Description

Vehicle noise reduction methods, equipment, vehicles and media

[0001] This application claims priority to Chinese patent application No. 202411220165.X, filed on August 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and in particular to a vehicle noise reduction method, device, vehicle, and medium. Background Technology

[0003] With the rapid development of the automotive industry, vehicles have become an indispensable means of transportation in modern society. Users are increasingly demanding higher levels of comfort during vehicle operation. Summary of the Invention

[0004] This disclosure provides a vehicle noise reduction method, device, vehicle, and medium.

[0005] In a first aspect, a vehicle noise reduction method is provided, comprising: controlling at least a portion of the motor modules in the vehicle's motor module to drive the vehicle; and controlling a target motor module in the vehicle's motor module to emit sound based on noise data collected during the vehicle's operation, thereby reducing the vehicle's driving noise.

[0006] In some embodiments, controlling a target motor module in the vehicle's motor module to emit sound based on noise data collected while the vehicle is in motion includes: determining at least one motor module in the vehicle's motor module as the target motor module; and controlling the target motor module to emit sound based on the noise data.

[0007] In some embodiments, determining at least one motor module as the target motor module includes:

[0008] When the vehicle is driven by at least some of the motor modules, the motor module that is not currently used to drive the vehicle is identified as the target motor module.

[0009] In some embodiments, the noise data includes at least one of the following: noise data generated by tire friction, wind noise, or ambient noise.

[0010] In some embodiments, controlling at least a portion of the motor modules in the vehicle's motor module to drive the vehicle includes: controlling at least a portion of the motor modules in the vehicle's motor module to drive the vehicle to steer; the noise data is noise data collected when the vehicle is steer.

[0011] In some embodiments, controlling at least a portion of the motor modules in the one or more motor modules to drive the vehicle to turn includes: controlling at least a portion of the motor modules in the vehicle to drive the vehicle to turn in place.

[0012] In some embodiments, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each of the front-wheel drive system and the rear-wheel drive system having two motor modules, and the other of the front-wheel drive system and the rear-wheel drive system having one motor module; controlling at least a portion of the one or more motor modules to drive the vehicle to turn in place includes:

[0013] The motor module in the front-wheel drive system is controlled to lock one front wheel, and the motor module in the rear-wheel drive system is controlled to drive the rear wheels to turn the vehicle in place.

[0014] In some embodiments, the target motor module is the motor module in the front-wheel drive system that sets one front wheel to a locked state.

[0015] In some embodiments, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each having two motor modules; controlling at least a portion of the motor modules in the one or more motor modules to drive the vehicle to turn in place includes: controlling the motor module in the front-wheel drive system to lock one front wheel, and controlling the motor module in the rear-wheel drive system to drive the rear wheels to drive the vehicle to turn in place.

[0016] In some embodiments, controlling at least one target motor module among the one or more motor modules to emit sound based on noise data collected during vehicle operation includes: determining noise frequency information from the noise data; determining target frequency information based on the noise frequency information; and controlling at least one target motor module among the one or more motor modules to emit sound according to the target frequency information.

[0017] In some embodiments, the target frequency information and the noise frequency information are negatively correlated.

[0018] In some embodiments, the noise data is audio data collected by an audio sensor positioned for the wheel.

[0019] In a second aspect, a vehicle noise reduction device is provided, configured to: control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle; and control at least one motor module in the vehicle's motor module to emit sound based on noise data collected during the vehicle's operation, thereby reducing the vehicle's driving noise.

[0020] Thirdly, an electronic device is provided, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the method described above.

[0021] Fourthly, a vehicle is provided, including the device described above, or the electronic device described above.

[0022] Fifthly, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the method described above.

[0023] In some embodiments of this disclosure, at least a portion of the motor modules in the vehicle's motor module are controlled to drive the vehicle; based on noise data collected during vehicle operation, at least one motor module is controlled to emit sound to reduce vehicle driving noise. This achieves the reduction of vehicle driving noise through the emission of motor modules in the vehicle, thereby improving the user experience of the vehicle. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of this disclosure, the accompanying drawings used in the description of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 is a flowchart of a vehicle noise reduction method according to some embodiments;

[0026] Figure 2 is an architecture diagram of a vehicle system according to some embodiments;

[0027] Figure 3 is an architecture diagram of another vehicle system according to some embodiments;

[0028] Figure 4 is an architecture diagram of yet another vehicle system according to some embodiments;

[0029] Figure 5 is a block diagram of an electronic device according to some embodiments;

[0030] Figure 6A is a block diagram of a vehicle according to some embodiments;

[0031] Figure 6B is a block diagram of another vehicle according to some embodiments. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of this disclosure more apparent and understandable, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0033] During vehicle operation, a significant amount of noise is typically generated, such as the sound of tires slipping. This noise can affect people outside the vehicle and even the driver, leading to safety issues. To address these problems, this disclosure provides a vehicle noise reduction method through several embodiments.

[0034] Figure 1 is a flowchart illustrating the steps of a vehicle noise reduction method according to some embodiments. As shown in Figure 1, in some embodiments, the vehicle can be a car equipped with a motor module, such as an electric vehicle or a hybrid vehicle. The motor module is used to drive the vehicle. The motor module can include a motor and a controller. The motor can be an asynchronous motor, a synchronous motor, or an electrically excited motor. In practical applications, the vehicle can be equipped with at least two motor modules, such as two motor modules, three motor modules, or four motor modules. At least two motor modules are located at different positions on the vehicle, such as at least two motor modules respectively located at the corresponding positions of the front right wheel, front left wheel, rear right wheel, and rear left wheel.

[0035] In some embodiments, as shown in FIG2, the motor module may include a front right electric drive assembly and a front left electric drive assembly, which are respectively connected to the power battery.

[0036] In some embodiments, as shown in FIG3, the motor module may include a rear right electric drive assembly and a rear left electric drive assembly, which are respectively connected to the power battery. In some embodiments, as shown in FIG4, the motor module may include a front electric drive assembly and a rear electric drive assembly, which are respectively connected to the power battery.

[0037] In practical applications, a field-oriented control (FOC) vector control system can be pre-established, such as a rotor field-oriented FOC vector control system based on a permanent magnet synchronous motor, a rotor field-oriented FOC vector control system based on an asynchronous motor, or a rotor excitation field-oriented FOC vector control system based on an electrically excited synchronous motor.

[0038] For a vector control system, the first electrical control signal can be converted into a component perpendicular to the rotor magnetic field and a component parallel to the rotor magnetic field by combining the rotor position in the motor. Then, the rotor in the motor can be controlled by the components perpendicular to the rotor magnetic field and the components parallel to the rotor magnetic field, thereby realizing field-oriented control through the motor.

[0039] In some embodiments, as shown in FIG1, the control method may include the following steps 101 to 102.

[0040] Step 101: Control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle.

[0041] Step 102: Based on the noise data collected during vehicle operation, control at least one motor module in the vehicle's motor module to emit sound in order to reduce vehicle operating noise.

[0042] In some embodiments of this disclosure, controlling at least one motor module in the vehicle's motor modules to emit sound based on noise data collected during vehicle operation includes: determining at least one motor module as a target motor module; and controlling the target motor module to emit sound based on the noise data.

[0043] In some embodiments of this disclosure, determining at least one motor module as the target motor module includes:

[0044] When the vehicle is driven by at least some of the motor modules, the motor modules that are not currently used to drive the vehicle are identified as the target motor modules. For example, the remaining motor modules of the vehicle, excluding at least some, are identified as the target motor modules.

[0045] In some embodiments of this disclosure, the noise data includes at least one of the following:

[0046] Data on noise generated by tire friction, wind noise, or environmental noise.

[0047] In some embodiments of this disclosure, controlling at least a portion of the motor modules in the vehicle's motor module to drive the vehicle includes: controlling at least a portion of the motor modules in the vehicle's motor module to steer the vehicle; the noise data is noise data collected when the vehicle is steer.

[0048] In some embodiments of this disclosure, controlling at least a portion of the one or more motor modules to drive the vehicle to steer includes:

[0049] Control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle to turn in place.

[0050] In some embodiments of this disclosure, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each of the front-wheel drive system and the rear-wheel drive system having two motor modules, and the other of the front-wheel drive system and the rear-wheel drive system having one motor module; controlling at least a portion of the one or more motor modules to drive the vehicle to turn in place includes:

[0051] The motor module in the front-wheel drive system is controlled to lock one front wheel, and the motor module in the rear-wheel drive system is controlled to drive the rear wheels to turn the vehicle in place.

[0052] In some embodiments of this disclosure, the target motor module is a motor module in the front-wheel drive system that sets the front wheels to a locked state.

[0053] In some embodiments of this disclosure, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each having two motor modules; controlling the one or more motor modules to drive the vehicle to turn in place includes: controlling the motor module in the front-wheel drive system to lock one front wheel, and controlling the motor module in the rear-wheel drive system to drive the rear wheels to drive the vehicle to turn in place.

[0054] In some embodiments of this disclosure, controlling at least one target motor module among the one or more motor modules to emit sound based on the noise data includes: determining noise frequency information from the noise data; determining target frequency information based on the noise frequency information; and controlling at least one target motor module among the one or more motor modules to emit sound according to the target frequency information.

[0055] In some embodiments of this disclosure, the target frequency information and the noise frequency information are negatively correlated.

[0056] In some embodiments of this disclosure, the noise data is audio data collected by an audio sensor positioned for the wheel.

[0057] In some embodiments of this disclosure, at least a portion of the motor modules in the vehicle's motor module are controlled to drive the vehicle; based on noise data collected during vehicle operation, at least one motor module in the vehicle's motor module is controlled to emit sound to reduce vehicle driving noise. This achieves the reduction of vehicle driving noise through the emission of sound from the motor modules in the vehicle, thereby improving the user experience of the vehicle.

[0058] It should be noted that, for the sake of simplicity, some embodiments of this disclosure are described as a series of actions. However, those skilled in the art should understand that some embodiments of this disclosure are not limited to the described order of actions, because according to some embodiments of this disclosure, certain steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to some embodiments of this disclosure.

[0059] Some embodiments of this disclosure also provide a vehicle noise reduction device 100, which is used to: control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle; and control at least one motor module in the vehicle's motor module to emit sound based on noise data collected during vehicle operation, so as to reduce vehicle driving noise.

[0060] In some embodiments, controlling at least one motor module to emit sound based on noise data collected during vehicle operation includes: determining at least one motor module as a target motor module; and controlling the target motor module to emit sound based on the noise data.

[0061] In some embodiments, determining at least one motor module as the target motor module includes: when the vehicle is driven by at least a portion of the motor modules in the vehicle's motor modules, determining the motor module in the vehicle's motor modules that is not currently used to drive the vehicle as the target motor module.

[0062] In some embodiments, the noise data includes at least one of the following: noise data generated by tire friction, wind noise, or ambient noise.

[0063] In some embodiments, at least a portion of the motor modules in the motor module controlling the vehicle drives the vehicle to move, including:

[0064] At least a portion of the motor modules in the vehicle's motor module are used to drive the vehicle's steering.

[0065] The noise data is collected when the vehicle is turning.

[0066] In some embodiments, controlling at least a portion of the motor modules in the one or more motor modules to drive the vehicle steering includes:

[0067] At least a portion of the motor modules in the vehicle control the vehicle to turn in place.

[0068] In some embodiments, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each of the front-wheel drive system and the rear-wheel drive system having two motor modules, and the other of the front-wheel drive system and the rear-wheel drive system having one motor module; controlling at least a portion of the one or more motor modules to drive the vehicle to turn in place includes:

[0069] The motor module in the front-wheel drive system is controlled to lock one front wheel, and the motor module in the rear-wheel drive system is controlled to drive the rear wheels to turn the vehicle in place.

[0070] In some embodiments, the target motor module is a motor module in the front-wheel drive system that sets the front wheels to a locked state.

[0071] In some embodiments, the vehicle includes a front-wheel drive system and a rear-wheel drive system, each having two motor modules; controlling at least a portion of the motor modules in the one or more motor modules to drive the vehicle to turn in place includes: controlling the motor module in the front-wheel drive system to lock one front wheel, and controlling the motor module in the rear-wheel drive system to drive the rear wheels to drive the vehicle to turn in place.

[0072] In some embodiments, controlling the target motor module in the motor module of the vehicle to emit sound based on the noise data includes: determining noise frequency information from the noise data; determining target frequency information based on the noise frequency information; and controlling the target motor module in the motor module of the vehicle to emit sound according to the target frequency information.

[0073] In some embodiments, the target frequency information and the noise frequency information are negatively correlated.

[0074] In some embodiments, the noise data is audio data collected by an audio sensor positioned for the wheel.

[0075] In some embodiments of this disclosure, at least a portion of the motor modules in the vehicle's motor module are controlled to drive the vehicle; based on noise data collected during vehicle operation, at least one motor module in the vehicle's motor module is controlled to emit sound to reduce vehicle driving noise. This achieves the reduction of vehicle driving noise through the emission of sound from the motor modules in the vehicle, thereby improving the user experience of the vehicle.

[0076] As shown in Figure 5, some embodiments of this disclosure also provide an electronic device 90, including a processor 901, a memory 902, and a computer program stored in the memory 902 and capable of running on the processor 901. When the computer program is executed by the processor, it implements the method described above.

[0077] As shown in Figures 6A and 6B, some embodiments of this disclosure also provide a vehicle 1000, including the vehicle noise reduction device 100 as described above, or the electronic device 90 as described above.

[0078] Some embodiments of this disclosure also provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described above.

[0079] Some embodiments of this disclosure also provide a computer program product, including a computer program that, when executed by a processor, implements the methods described above.

[0080] The apparatus embodiments are basically similar to the method embodiments; for relevant details, please refer to the description of the method embodiments.

[0081] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in some embodiments of this disclosure are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] Those skilled in the art will understand that some embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, some embodiments of this disclosure can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, some embodiments of this disclosure can take the form of computer program products implemented on one or more computer-usable storage media (including, but not limited to, disk storage, compact disc read-only memory (CD-ROM), optical storage, etc.) containing computer-usable program code.

[0084] Some embodiments of this disclosure are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to some embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0085] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0086] These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable terminal equipment, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0087] While preferred embodiments of some embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of some embodiments of this disclosure.

[0088] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the aforementioned element.

[0089] The above provides a detailed description of a vehicle noise reduction method, device, vehicle, and medium. Specific examples have been used to illustrate the principles and implementation methods of this disclosure. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and its core ideas. Furthermore, those skilled in the art will recognize that, based on the ideas of this disclosure, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this disclosure.

Claims

1. A vehicle noise reduction method, comprising: Control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle; Based on the noise data collected during vehicle operation, the target motor module in the vehicle's motor module is controlled to emit sound in order to reduce the vehicle's driving noise.

2. The method according to claim 1, wherein, The step of controlling the target motor module in the vehicle's motor module to emit sound based on noise data collected during vehicle operation includes: Identify at least one motor module among the motor modules of the vehicle as the target motor module; Based on the noise data, the target motor module is controlled to emit sound.

3. The method according to claim 2, wherein, The step of determining at least one motor module among the motor modules of the vehicle as the target motor module includes: When the vehicle is driven by at least some of the motor modules, the motor module that is not currently used to drive the vehicle is identified as the target motor module.

4. The method according to any one of claims 1 to 3, wherein, The noise data includes at least one of the following: Noise data generated by tire friction, wind noise, or environmental noise.

5. The method according to claim 4, wherein, At least a portion of the motor modules in the motor module controlling the vehicle drive the vehicle to move, including: Control at least a portion of the motor modules in the vehicle's motor module to drive the vehicle to steer; The noise data is the noise data collected when the vehicle turns.

6. The method according to claim 5, wherein, At least a portion of the motor modules in the motor module controlling the vehicle drive the vehicle to steer, including: Control at least a portion of one or more motor modules of the vehicle to drive the vehicle to turn in place.

7. The method according to claim 6, wherein, The vehicle includes a front-wheel drive system and a rear-wheel drive system, each of the front-wheel drive system and the rear-wheel drive system having two motor modules, and the other of the front-wheel drive system and the rear-wheel drive system having one motor module; Controlling at least a portion of the motor modules in one or more motor modules to drive the vehicle to turn in place includes: The motor module in the front-wheel drive system is controlled to lock one front wheel, and the motor module in the rear-wheel drive system is controlled to drive the rear wheels to turn the vehicle in place.

8. The method according to claim 7, wherein, The target motor module is the motor module in the front-wheel drive system that sets the front wheels to a locked state.

9. The method according to claim 6, wherein, The vehicle includes a front-wheel drive system and a rear-wheel drive system, and each of the front-wheel drive system and the rear-wheel drive system has two motor modules; Controlling at least a portion of the motor modules in one or more motor modules to drive the vehicle to turn in place includes: The motor module in the front-wheel drive system is controlled to lock one front wheel, and the motor module in the rear-wheel drive system is controlled to drive the rear wheels to turn the vehicle in place.

10. The method according to any one of claims 1 to 9, wherein, The step of controlling the target motor module in the vehicle's motor module to emit sound based on noise data collected during vehicle operation includes: From the noise data, determine the noise frequency information; Based on the noise frequency information, determine the target frequency information; The target motor module is controlled to emit sound according to the target frequency information.

11. The method according to claim 10, wherein, The target frequency information and the noise frequency information are negatively correlated.

12. The method according to any one of claims 1 to 11, wherein, The noise data is audio data collected by an audio sensor located on the wheel.

13. An electronic device (90) comprising a processor (901), a memory (902), and a computer program stored in the memory (902) and capable of running on the processor (901), wherein the computer program, when executed by the processor (901), implements the method according to any one of claims 1 to 12.

14. A vehicle (1000) comprising the electronic device (90) according to claim 13.

15. A computer-readable storage medium, wherein, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 12.

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