Control methods, devices, vehicles, and media for reducing the operating noise of electronic water pumps

By collecting data on the power battery temperature and vehicle speed to match the optimal noise control strategy for the electronic water pump, the pump speed is controlled, solving the noise problem of new energy vehicles at low speeds and improving the driving experience.

CN115614291BActive Publication Date: 2026-03-10CHERY AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-18
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

When new energy vehicles are driving at low speeds, the noise from the electronic water pump is easily noticeable, affecting the driving experience.

Method used

By collecting the highest temperature of the power battery and the current vehicle speed, the optimal noise control strategy for the electronic water pump is matched, and the operating speed of the electronic water pump is controlled to keep the noise within the preset noise range.

Benefits of technology

While meeting cooling requirements, the electronic water pump operates at different speeds at different vehicle speeds, reducing the noise of the water pump that is audible to the human ear and improving the user's driving experience.

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Abstract

This application relates to a control method, device, vehicle, and medium for reducing the operating noise of an electronic water pump. The method includes: acquiring the highest temperature of the power battery and the current vehicle speed; matching an optimal noise control strategy for the electronic water pump based on the highest temperature and / or the current vehicle speed; and controlling the operation of the electronic water pump according to the optimal noise control strategy to keep the noise of the electronic water pump within a preset noise range. This application, by linking the operating speed of the electronic water pump to the vehicle speed, enables the electronic water pump to operate at different speeds at different vehicle speeds while meeting cooling requirements, thereby reducing the water pump operating noise audible to the human ear and effectively improving the user's driving experience.
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Description

Technical Field

[0001] This application relates to the field of electronic control calibration technology, and in particular to a control method, device, vehicle and medium for reducing the operating noise of an electronic water pump. Background Technology

[0002] Currently, new energy vehicles are gradually becoming the mainstream in the future transportation sector. Compared with traditional fuel vehicles, the noise from electronic accessories in the front compartment of new energy vehicles is particularly prominent without the masking effect of engine noise, especially at low speeds, where it is more easily noticed. Among these electronic accessories, the electric water pump is one noise source. These electric water pumps typically operate within a speed range of 500-6000 rpm, generally using PWM (Pulse Width Modulation) duty cycle to control their operating speed; the higher the speed, the greater the noise. The noise generated by the electric water pump enters the ear through two transmission paths: structural transmission and air transmission. For the structural path, rubber vibration isolation measures can usually be taken. For the air path, although acoustic materials can be used to encase the pump, this increases development costs.

[0003] Currently, the relevant technology uses an electronic water pump to power the battery cooling system. When the battery reaches a certain threshold, the water pump will start working with a preset duty cycle.

[0004] However, the noise from the water pump is easily noticeable when the vehicle is traveling at low speeds, which can easily lead to customer complaints and greatly affect the user's driving experience. Summary of the Invention

[0005] This application provides a control method, device, vehicle, and medium for reducing the operating noise of an electronic water pump, in order to solve the problem that the noise of the water pump is easily perceived when the vehicle is traveling at low speed, affecting the driving experience.

[0006] The first aspect of this application provides a control method for reducing the operating noise of an electronic water pump, comprising the following steps: acquiring the highest temperature of the power battery and the current vehicle speed; matching an optimal noise control strategy for the electronic water pump based on the highest temperature and / or the current vehicle speed; and controlling the operation of the electronic water pump according to the optimal noise control strategy to control the noise of the electronic water pump within a preset noise range.

[0007] Optionally, in one embodiment of this application, the optimal noise control strategy for matching the electronic water pump based on the highest temperature and / or the current vehicle speed includes: if the highest temperature is less than a first preset threshold, controlling the electronic water pump to stop working; if the highest temperature is greater than a second preset threshold, matching the optimal duty cycle based on the current vehicle speed.

[0008] Optionally, in one embodiment of this application, the step of matching the optimal duty cycle based on the current vehicle speed includes: if the current vehicle speed is higher than a first preset vehicle speed, then controlling the electronic water pump to operate at a first preset duty cycle; if the current vehicle speed is lower than a second preset vehicle speed, then controlling the electronic water pump to operate at a second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle.

[0009] Optionally, in one embodiment of this application, both the first preset threshold and the second preset threshold are 33°C.

[0010] Optionally, in one embodiment of this application, both the first preset vehicle speed and the second preset vehicle speed are 25 km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

[0011] A second aspect of this application provides a control device for reducing the operating noise of an electronic water pump, comprising: a data acquisition module for acquiring the maximum temperature of a power battery and the current vehicle speed; a matching module for matching an optimal noise control strategy for the electronic water pump based on the maximum temperature and / or the current vehicle speed; and a control module for controlling the operation of the electronic water pump according to the optimal noise control strategy, so as to control the noise of the electronic water pump within a preset noise range.

[0012] Optionally, in one embodiment of this application, the matching module includes: a stop unit, configured to control the electronic water pump to stop working if the highest temperature is less than a first preset threshold; and a judgment unit, configured to match the optimal duty cycle based on the current vehicle speed if the highest temperature is greater than a second preset threshold.

[0013] Optionally, in one embodiment of this application, the determining unit is specifically used to: if the current vehicle speed is higher than a first preset vehicle speed, control the electronic water pump to operate at a first preset duty cycle; if the current vehicle speed is lower than a second preset vehicle speed, control the electronic water pump to operate at a second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle.

[0014] Optionally, in one embodiment of this application, both the first preset threshold and the second preset threshold are 33°C.

[0015] Optionally, in one embodiment of this application, both the first preset vehicle speed and the second preset vehicle speed are 25 km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

[0016] A third aspect of this application provides a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method for reducing the operating noise of an electronic water pump as described in the above embodiments.

[0017] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described control method for reducing the operating noise of an electronic water pump.

[0018] Therefore, the embodiments of this application have the following beneficial effects:

[0019] The embodiments of this application can collect the highest temperature of the power battery and the current vehicle speed; match the optimal noise control strategy for the electronic water pump based on the highest temperature and / or the current vehicle speed; and control the operation of the electronic water pump according to the optimal noise control strategy to keep the noise of the electronic water pump within a preset noise range. This application, by linking the operating speed of the electronic water pump to the vehicle speed, enables the electronic water pump to operate at different speeds at different vehicle speeds while meeting cooling requirements, thereby reducing the water pump noise audible to the human ear and effectively improving the user's driving experience.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 This is a flowchart of a control method for reducing the operating noise of an electronic water pump according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the execution logic of a control method for reducing the operating noise of an electronic water pump according to an embodiment of this application;

[0024] Figure 3 This is an example diagram of a control device for reducing the operating noise of an electronic water pump according to an embodiment of this application;

[0025] Figure 4 A schematic diagram of the vehicle structure provided in the application embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] Control device for reducing the operating noise of electronic water pump-10; acquisition module-100, matching module-200, control module-300; memory-401, processor-402, communication interface-403. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0029] The following description, with reference to the accompanying drawings, outlines a control method, apparatus, vehicle, and medium for reducing the operating noise of an electronic water pump according to embodiments of this application. Addressing the problems mentioned in the background section, this application provides a control method for reducing the operating noise of an electronic water pump. In this method, the highest temperature of the power battery and the current vehicle speed are collected; an optimal noise control strategy for the electronic water pump is matched based on the highest temperature and / or the current vehicle speed; and the electronic water pump is controlled to operate according to the optimal noise control strategy, thereby controlling the noise of the electronic water pump within a preset noise range. This application correlates the operating speed of the electronic water pump with the vehicle speed, enabling the electronic water pump to operate at different speeds at different vehicle speeds while meeting cooling requirements, thereby reducing the water pump operating noise audible to the human ear and effectively improving the user's driving experience. This solves the problem that water pump noise is easily perceived when the vehicle is traveling at low speeds, affecting the driving experience.

[0030] Specifically, Figure 1 This is a flowchart illustrating a control method for reducing the operating noise of an electronic water pump, as provided in an embodiment of this application.

[0031] like Figure 1 As shown, the control method for reducing the operating noise of an electronic water pump includes the following steps:

[0032] In step S101, the highest temperature of the power battery and the current vehicle speed are collected.

[0033] In step S102, the optimal noise control strategy for the electronic water pump is matched based on the highest temperature and / or the current vehicle speed.

[0034] The embodiments of this application can, after the vehicle is under high voltage and enters the ready state, collect the highest temperature signal T of the power battery and the vehicle speed signal V through devices such as battery temperature sensor and vehicle speed sensor, and match the optimal noise control strategy of the electronic water pump according to the acquired temperature signal and vehicle speed signal. Thus, according to the actual state of the vehicle, a suitable noise control strategy is executed, which effectively ensures the noise control effect.

[0035] Optionally, in one embodiment of this application, the optimal noise control strategy for the electronic water pump is matched based on the highest temperature and / or the current vehicle speed, including: if the highest temperature is less than a first preset threshold, controlling the electronic water pump to stop working; if the highest temperature is greater than a second preset threshold, matching the optimal duty cycle based on the current vehicle speed.

[0036] In the embodiments of this application, the process of matching the optimal noise control strategy for the electronic water pump based on the highest temperature and current vehicle speed is as follows:

[0037] 1. If the highest temperature is less than the first preset threshold, the electronic water pump will stop working.

[0038] 2. If the highest temperature is greater than the second preset threshold, then the optimal duty cycle is matched based on the current vehicle speed.

[0039] Therefore, the embodiments of this application provide reliable data for noise control of electronic water pumps and improve the robustness of vehicle noise control strategies.

[0040] Optionally, in one embodiment of this application, both the first preset threshold and the second preset threshold are 33°C.

[0041] It should be noted that in the embodiments of this application, both the first preset threshold and the second preset threshold are 33°C. Those skilled in the art can set appropriate temperature thresholds according to actual circumstances during implementation, and no specific limitations are imposed here.

[0042] Therefore, by setting an appropriate temperature threshold, the accuracy and rationality of matching the optimal noise control strategy for the water pump are effectively improved, further ensuring the performance of noise control.

[0043] Optionally, in one embodiment of this application, matching the optimal duty cycle based on the current vehicle speed includes: if the current vehicle speed is higher than a first preset vehicle speed, controlling the electronic water pump to operate at the first preset duty cycle; if the current vehicle speed is lower than a second preset vehicle speed, controlling the electronic water pump to operate at the second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle.

[0044] It should be noted that the process of matching the optimal duty cycle based on the current vehicle speed in the embodiments of this application is as follows:

[0045] 1. If the current vehicle speed is higher than the first preset vehicle speed, control the electronic water pump to work at the first preset duty cycle;

[0046] 2. If the current vehicle speed is lower than the second preset vehicle speed, the electronic water pump is controlled to work at the second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle.

[0047] It is understood that the embodiments of this application match the optimal duty cycle according to the current vehicle speed and associate the operating speed of the electronic water pump with the vehicle speed, so that the water pump can operate at different speeds according to different vehicle speed ranges while meeting the cooling performance requirements.

[0048] Optionally, in one embodiment of this application, the first preset vehicle speed and the second preset vehicle speed are both 25 km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

[0049] In the embodiments of this application, the first preset vehicle speed and the second preset vehicle speed are both 25 km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

[0050] For example, if the temperature T is less than 33°C, the electric water pump will not work; if the temperature T is greater than 33°C, the vehicle speed will be further assessed. If the vehicle speed V is higher than 25 km / h, the electric water pump will operate at 85% duty cycle; if the vehicle speed is lower than 25 km / h, the electric water pump will operate at 55% duty cycle.

[0051] Therefore, the embodiments of this application greatly improve the accuracy of matching vehicle speed with the optimal duty cycle, enabling the vehicle to drive at low speed and low speed, and at high speed and high speed, thus significantly improving the performance of noise control.

[0052] In step S103, the electronic water pump is controlled to operate according to the optimal noise control strategy so as to control the noise of the electronic water pump within a preset noise range.

[0053] After matching the optimal noise control strategy for the electronic water pump based on the highest temperature and current vehicle speed, the embodiments of this application can further control the operation of the electronic water pump according to the optimal noise control strategy, thereby controlling the noise of the electronic water pump within a reasonable and comfortable noise range. Thus, the embodiments of this application can realize that the electronic water pump operates at different speeds at different vehicle speeds according to the actual driving state of the vehicle, thereby reducing the water pump operating noise audible to the human ear and greatly improving the vehicle's intelligence and humanization level.

[0054] The method for reducing the operating noise of an electronic water pump according to this application will be described below with reference to the accompanying drawings.

[0055] Figure 2 This is a schematic diagram illustrating the execution logic of the control method for reducing the operating noise of an electronic water pump proposed in an embodiment of this application. Figure 2 As shown, the specific process for reducing the operating noise of the electronic water pump in this application is as follows:

[0056] S201: The vehicle is connected to high voltage and enters ready mode;

[0057] S202: Collects battery maximum temperature and vehicle speed signals;

[0058] S203: Determine if the battery's maximum temperature is greater than 33°C. If it is not greater than 33°C, proceed to S204; otherwise, proceed to S205.

[0059] S204: Control the water pump to stop working;

[0060] S205: Determine if the vehicle speed is greater than 25km / h. If it is not greater than 25km / h, proceed to S206; otherwise, proceed to S207.

[0061] S206: Control the water pump to operate at a 55% duty cycle;

[0062] S207: Control the water pump to operate at 85% duty cycle.

[0063] The control method for reducing the operating noise of an electronic water pump proposed in this application involves collecting the highest temperature of the power battery and the current vehicle speed; matching the optimal noise control strategy for the electronic water pump based on the highest temperature and / or the current vehicle speed; and controlling the operation of the electronic water pump according to the optimal noise control strategy to keep the noise of the electronic water pump within a preset noise range. This application links the operating speed of the electronic water pump to the vehicle speed, enabling the electronic water pump to operate at different speeds at different vehicle speeds while meeting cooling requirements, thereby reducing the water pump operating noise audible to the human ear and effectively improving the user's driving experience.

[0064] Next, with reference to the accompanying drawings, a control device for reducing the operating noise of an electronic water pump according to an embodiment of this application is described.

[0065] Figure 3 This is a block diagram of a control device for reducing the operating noise of an electronic water pump according to an embodiment of this application.

[0066] like Figure 3 As shown, the control device 10 for reducing the operating noise of the electronic water pump includes: a data acquisition module 100, a matching module 200, and a control module 300.

[0067] The data acquisition module 100 is used to collect the highest temperature of the power battery and the current speed of the vehicle.

[0068] Matching module 200 is used to match the optimal noise control strategy for the electronic water pump based on the highest temperature and / or current vehicle speed.

[0069] The control module 300 is used to control the operation of the electronic water pump according to the optimal noise control strategy, so as to control the noise of the electronic water pump within a preset noise range.

[0070] Optionally, in one embodiment of this application, the matching module 200 includes a stopping unit and a judging unit.

[0071] The stop unit is used to control the electronic water pump to stop working if the highest temperature is less than a first preset threshold.

[0072] The judgment unit is used to match the optimal duty cycle based on the current vehicle speed if the highest temperature is greater than the second preset threshold.

[0073] Optionally, in one embodiment of this application, the determining unit is specifically used to: if the current vehicle speed is higher than a first preset vehicle speed, control the electronic water pump to operate at a first preset duty cycle; if the current vehicle speed is lower than a second preset vehicle speed, control the electronic water pump to operate at a second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle.

[0074] Optionally, in one embodiment of this application, both the first preset threshold and the second preset threshold are 33°C.

[0075] Optionally, in one embodiment of this application, the first preset vehicle speed and the second preset vehicle speed are both 25 km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

[0076] It should be noted that the foregoing explanation of the control method embodiment for reducing the operating noise of an electronic water pump also applies to the control device for reducing the operating noise of an electronic water pump in this embodiment, and will not be repeated here.

[0077] The control device for reducing the operating noise of an electronic water pump, as proposed in this application, collects the highest temperature of the power battery and the current vehicle speed; matches the optimal noise control strategy for the electronic water pump based on the highest temperature and / or the current vehicle speed; and controls the operation of the electronic water pump according to the optimal noise control strategy to keep the noise of the electronic water pump within a preset noise range. This application, by linking the operating speed of the electronic water pump to the vehicle speed, enables the electronic water pump to operate at different speeds at different vehicle speeds while meeting cooling requirements, thereby reducing the water pump operating noise audible to the human ear and effectively improving the user's driving experience.

[0078] Figure 4 A schematic diagram of the structure of a vehicle provided in an embodiment of this application. The vehicle may include:

[0079] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0080] When the processor 402 executes the program, it implements the control method for reducing the operating noise of the electronic water pump provided in the above embodiments.

[0081] Furthermore, the vehicle also includes:

[0082] Communication interface 403 is used for communication between memory 401 and processor 402.

[0083] The memory 401 is used to store computer programs that can run on the processor 402.

[0084] The memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0085] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be divided into address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0086] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0087] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0088] This embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described control method for reducing the operating noise of an electronic water pump.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0092] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0093] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0094] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0095] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0096] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A control method of reducing operating noise of an electronic water pump, characterized by, The method comprises the following steps: collecting the highest temperature of the power battery and the current speed of the vehicle; matching the optimal noise control strategy of the electronic water pump based on the highest temperature and / or the current speed; wherein the matching the optimal noise control strategy of the electronic water pump based on the highest temperature and / or the current speed comprises: if the highest temperature is less than a first preset threshold, controlling the electronic water pump to stop working; if the highest temperature is greater than a second preset threshold, matching the optimal duty cycle based on the current speed; the matching the optimal duty cycle based on the current speed comprises: if the current speed is higher than a first preset speed, controlling the electronic water pump to work at a first preset duty cycle; if the current speed is lower than a second preset speed, controlling the electronic water pump to work at a second preset duty cycle, wherein the first preset duty cycle is greater than the second preset duty cycle; the first preset threshold and the second preset threshold are both 33℃; the first preset speed and the second preset speed are both 25km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%; controlling the electronic water pump to work according to the optimal noise control strategy to control the noise of the electronic water pump in a preset noise range.

2. A control device for reducing the operating noise of an electronic water pump, characterized in that, comprise: a collecting module configured to collect the highest temperature of the power battery and the current speed of the vehicle; a matching module configured to match the optimal noise control strategy of the electronic water pump based on the highest temperature and / or the current speed; and a control module configured to control the electronic water pump to work according to the optimal noise control strategy to control the noise of the electronic water pump in a preset noise range; the matching module comprises: a stopping unit configured to control the electronic water pump to stop working if the highest temperature is less than a first preset threshold; a judging unit configured to match the optimal duty cycle based on the current speed if the highest temperature is greater than a second preset threshold; the first preset threshold and the second preset threshold are both 33℃; the judging unit is specifically configured to control the electronic water pump to work at a first preset duty cycle if the current speed is higher than a first preset speed, and control the electronic water pump to work at a second preset duty cycle if the current speed is lower than a second preset speed, wherein the first preset duty cycle is greater than the second preset duty cycle; the first preset speed and the second preset speed are both 25km / h, and the first preset duty cycle is 85% and the second preset duty cycle is 55%.

3. A vehicle characterized by comprising: comprise: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the control method for reducing the working noise of the electronic water pump.

4. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the control method for reducing the working noise of the electronic water pump.

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