Vehicle bearing electrical corrosion measurement method and device

Abstract

The present application relates to the technical field of drive shaft testing and provides a method and apparatus for measuring electrical corrosion in vehicle bearings. The method comprises: determining a shaft voltage sampling point for each drive shaft based on a vehicle drive structure comprising a motor, a non-rotating body, and each drive shaft; and determining a first electrical corrosion measurement result for the bearing of each drive shaft based on a first shaft voltage at each shaft voltage sampling point. The vehicle bearing electrical corrosion measurement method provided in embodiments of the present application can improve the accuracy of vehicle bearing electrical corrosion measurements.

Description

Technical Field

[0001] The present application relates to the technical field of drive shaft testing, and in particular to a method and device for measuring electrical corrosion of vehicle bearings. Background Art

[0002] Pure electric and hybrid vehicles are electrically driven by electric motors. Current mainstream electric drive systems all use pulse-width modulation (PWM) to control motor speed. This generates common-mode voltages on the motor's drive shaft through capacitive induction. When these voltages accumulate to a certain level, they can break through the bearing oil film, generating shaft currents and causing electrical corrosion on the drive shaft, ultimately damaging the drive shaft. Therefore, accurately measuring electrical corrosion on vehicle drive shafts is a pressing technical challenge. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a method for measuring electrical corrosion of vehicle bearings, which can improve the accuracy of electrical corrosion measurement of vehicle bearings.

[0004] The present application also provides a vehicle bearing electrical corrosion measuring device.

[0005] The present application also provides an electronic device.

[0006] The present application also provides a computer-readable storage medium.

[0007] The vehicle bearing electrical corrosion measurement method according to the first embodiment of the present application includes:

[0008] According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body and each transmission shaft, a shaft voltage sampling point of each transmission shaft is determined from each transmission shaft;

[0009] A first electrical corrosion measurement result of the bearing of each of the transmission shafts is determined according to the first shaft voltage of each of the shaft voltage sampling points.

[0010] By determining the shaft voltage sampling point of each drive shaft from each drive shaft in a drive structure connected by a motor, a non-rotating body and each drive shaft to perform voltage sampling, the first shaft voltage of each drive shaft is obtained, and the corrosion result of each drive shaft is determined based on the first shaft voltage of each drive shaft. The shaft voltage under multi-stage transmission is used to measure the electrical corrosion of vehicle bearings, so that the obtained electrical corrosion measurement results can be more consistent with the actual electrical corrosion results of the vehicle under electric drive, thereby improving the accuracy of vehicle bearing electrical corrosion measurement.

[0011] According to one embodiment of the present application, based on a drive structure in a vehicle connected by a motor, a non-rotating body, and each transmission shaft, determining a shaft voltage sampling point of each transmission shaft from each transmission shaft includes:

[0012] According to the driving structure, a side of the transmission shaft connected to the non-rotating body is determined as a shaft voltage sampling point of the transmission shaft.

[0013] According to one embodiment of the present application, based on a drive structure in a vehicle connected by a motor, a non-rotating body, and each transmission shaft, determining a shaft voltage sampling point of each transmission shaft from each transmission shaft includes:

[0014] Determine that the transmission shaft is a target transmission shaft connected to the rotor in the motor, and determine the side of the target transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the target transmission shaft; or

[0015] The rotor in the motor is determined as the shaft voltage sampling point of the target transmission shaft.

[0016] According to one embodiment of the present application, determining a first electrical corrosion measurement result of a bearing of each of the transmission shafts based on the first shaft voltage at each of the shaft voltage sampling points includes:

[0017] When the first shaft voltage is greater than or equal to a preset voltage, it is determined that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage.

[0018] According to one embodiment of the present application, when the first shaft voltage is greater than or equal to a preset voltage, determining that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage includes:

[0019] When the first shaft voltage is greater than or equal to a preset voltage, determining that the transmission shaft mark corresponding to the first shaft voltage is in an abnormal state;

[0020] It is determined that the duration of the abnormal state is greater than or equal to a preset duration, and the bearing of the transmission shaft corresponding to the first shaft voltage is marked as having electrical corrosion.

[0021] According to one embodiment of the present application, it further includes:

[0022] Determining, according to the drive structure, an outer ring voltage sampling point on any non-rotating body connected to any transmission shaft in the drive structure;

[0023] determining a second electrical corrosion measurement result of the bearing of each of the transmission shafts according to the second shaft voltage at the outer ring voltage sampling point;

[0024] Wherein, each of the non-rotating bodies shares a common ground.

[0025] According to one embodiment of the present application, it further includes:

[0026] A target electrical corrosion measurement result of a bearing of a vehicle propeller shaft is generated based on the first electrical corrosion measurement result and the second electrical corrosion measurement result.

[0027] A vehicle bearing electrical corrosion measuring device according to an embodiment of the second aspect of the present application includes:

[0028] a sampling point determination module, configured to determine a shaft voltage sampling point of each transmission shaft from each transmission shaft according to a drive structure in a vehicle formed by connecting a motor, a non-rotating body, and each transmission shaft;

[0029] The electrical corrosion measurement module is used to determine the first electrical corrosion measurement result of the bearing of each of the transmission shafts according to the first shaft voltage of each of the shaft voltage sampling points.

[0030] According to the electronic device of the third embodiment of the present application, the electronic device includes a processor and a memory storing a computer program, and when the processor executes the computer program, the vehicle bearing electrical corrosion measurement method described in any of the above embodiments is implemented.

[0031] According to the computer-readable storage medium of the fourth embodiment of the present application, a computer program is stored thereon, and when the computer program is executed by a processor, the vehicle bearing electrical corrosion measurement method described in any of the above embodiments is implemented.

[0032] According to the computer program product of the fifth embodiment of the present application, the computer program product includes: when the computer program is executed by a processor, the vehicle bearing electrical corrosion measurement method as described in any of the above embodiments is implemented.

[0033] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0034] By determining the shaft voltage sampling point of each drive shaft from each drive shaft in a drive structure connected by a motor, a non-rotating body and each drive shaft to perform voltage sampling, the first shaft voltage of each drive shaft is obtained, and the corrosion result of each drive shaft is determined based on the first shaft voltage of each drive shaft. The shaft voltage under multi-stage transmission is used to measure the electrical corrosion of vehicle bearings, so that the obtained electrical corrosion measurement results can be more consistent with the actual electrical corrosion results of the vehicle under electric drive, thereby improving the accuracy of vehicle bearing electrical corrosion measurement.

[0035] Furthermore, by determining the side of the transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the transmission shaft, the shaft voltage can be determined based on the static charge generated by friction between the bearings and the non-rotating body of the transmission shaft during subsequent voltage sampling, thereby enabling the shaft voltage of each transmission shaft to be accurately collected subsequently.

[0036] Furthermore, by determining one side of the rotor as the shaft voltage sampling point of the target transmission shaft, it is possible to avoid the situation where the shaft voltage generated by the motor is ignored when the target transmission shaft connected to the rotor is not connected to a non-rotating body, thereby enabling the shaft voltages generated by each transmission shaft and the stator core of the motor to be accurately collected subsequently.

[0037] Furthermore, by determining the outer ring voltage sampling point on any non-rotating body connected to any transmission shaft in the drive structure, and determining the second electrical corrosion measurement result of the bearing of each transmission shaft based on the second shaft voltage of the outer ring voltage sampling point, it is possible to further judge whether the bearing has electrical corrosion, thereby improving the accuracy of the electrical corrosion measurement of the vehicle bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 1 is a flow chart of a method for measuring electrical corrosion of a vehicle bearing provided in an embodiment of the present application;

[0040] Figure 2 This is a schematic diagram of the driving structure provided by an embodiment of the present application;

[0041] Figure 3 Schematic diagram of the structure of the vehicle bearing electrical corrosion measurement device provided in an embodiment of the present application;

[0042] Figure 4 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0044] Below, the vehicle bearing electrical corrosion measurement method and device provided in the embodiments of the present application will be introduced and explained in detail through several specific embodiments.

[0045] In one embodiment, a method for measuring electrical corrosion of vehicle bearings is provided. The method is applied to a server and is used to measure electrical corrosion of a drive shaft in a vehicle's electric drive system. The server can be a standalone server or a server cluster consisting of multiple servers. The server can also be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence sampling point devices.

[0046] like Figure 1 As shown, this embodiment provides a vehicle bearing electrical corrosion measurement method comprising:

[0047] Step 101, according to a driving structure in a vehicle consisting of a motor, a non-rotating body, and each transmission shaft, determining a shaft voltage sampling point of each transmission shaft from each transmission shaft;

[0048] Step 102 : determining a first electrical corrosion measurement result of a bearing of each of the transmission shafts according to the first shaft voltage at each of the shaft voltage sampling points.

[0049] By determining the shaft voltage sampling point of each drive shaft from each drive shaft in a drive structure connected by a motor, a non-rotating body and each drive shaft to perform voltage sampling, the first shaft voltage of each drive shaft is obtained, and the corrosion result of each drive shaft is determined based on the first shaft voltage of each drive shaft. The shaft voltage under multi-stage transmission is used to measure the electrical corrosion of vehicle bearings, so that the obtained electrical corrosion measurement results can be more consistent with the actual electrical corrosion results of the vehicle under electric drive, thereby improving the accuracy of vehicle bearing electrical corrosion measurement.

[0050] In one embodiment, a motor, a non-rotating member, and various transmission shafts form a multi-stage drive structure. During operation, the drive structure generates static charge due to friction between rotating members, such as the bearings of the transmission shaft, and non-rotating members, such as fasteners. This charge accumulates and generates shaft voltage. When the shaft voltage accumulates to a certain level, it breaks down the lubricating oil film, generating shaft current and causing electrical corrosion. Therefore, a point on any transmission shaft of the drive structure can be pre-selected as a shaft voltage sampling point for that shaft. This shaft voltage sampling point can be used to collect static charge generated by friction between the rotating and non-rotating members.

[0051] For example, the drive structure is as follows Figure 2 As shown, the transmission shaft includes one shaft, two shafts and three shafts. According to the driving structure, one side of the one shaft, two shafts and three shafts can be used as a sampling point.

[0052] Because the transmission shafts mesh with each other through gears, and an oil film exists between the gear mating surfaces for lubrication, it can be assumed that due to the presence of the oil film, insulation may occur between the bearings of the transmission shafts in some cases. In this case, if the shaft voltage sampling point is set between the bearings of the two transmission shafts, it may make it impossible to perform voltage sampling. Therefore, in order to facilitate the determination of the shaft voltage sampling point for bearing voltage sampling, in one embodiment, based on the drive structure of the vehicle composed of a motor, a non-rotating body, and each transmission shaft, the shaft voltage sampling point of each transmission shaft is determined from the transmission shaft, including:

[0053] According to the driving structure, a side of the transmission shaft connected to the non-rotating body is determined as a shaft voltage sampling point of the transmission shaft.

[0054] In one embodiment, since there may be insulation between the bearings of the drive shaft, and static charge may be generated between the bearings of the drive shaft and the non-rotating body due to friction, the bearing on the side of the drive shaft connected to the non-rotating body can be determined as the shaft voltage sampling point of the drive shaft, so that the shaft voltage generated by the static charge between the bearings of the drive shaft and the non-rotating body can be accurately collected subsequently.

[0055] For example, Figure 2 As shown, the second and first shafts are meshed through gears, and an oil film exists between the gear mating surfaces for lubrication. To a certain extent, it can be assumed that due to the presence of the oil film, the first and second shafts may be isolated in some cases. Therefore, the shaft voltage sampling point for the second shaft is sampling point C on the right side of the second shaft, which is connected to the non-rotating body. Sampling point C can also be the left side of the second shaft, which is connected to the non-rotating body. Similarly, the shaft voltage sampling point for the third shaft is sampling point D on the right side of the third shaft, which is connected to the non-rotating body and the right wheel end. Sampling point D can also be the left side of the third shaft, which is connected to the non-rotating body and the left wheel end.

[0056] By determining the side of the transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the transmission shaft, the shaft voltage can be determined based on the static charge generated by friction between the bearings and the non-rotating body of the transmission shaft during subsequent voltage sampling, thereby enabling the shaft voltage of each transmission shaft to be accurately collected subsequently.

[0057] Considering that in the drive structure, there will be a transmission shaft connected to the rotor of the motor. When the motor is running, this transmission shaft drives other transmission shafts to achieve electric drive of the vehicle. As the stator core of the motor rotates with the magnetic poles, the magnetic flux intersecting with the transmission shaft alternates, generating shaft voltage. When the shaft voltage accumulates to a certain level, it will break through the bearing oil film and generate shaft current. As time accumulates, it will cause electrical corrosion of the transmission shaft bearing. Therefore, in one embodiment, for the target transmission shaft connected to the rotor in the motor, the determination of its shaft voltage sampling point may include:

[0058] Determine that the transmission shaft is a target transmission shaft connected to the rotor in the motor, and determine the side of the target transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the target transmission shaft; or

[0059] The rotor in the motor is determined as the shaft voltage sampling point of the target transmission shaft.

[0060] In one embodiment, for a target transmission shaft connected to a rotor in a motor, the side thereof connected to a non-rotating body can be directly determined as a shaft voltage sampling point. Since the target transmission shaft and the rotor are fixedly connected, the shaft voltage collected at the shaft voltage sampling point is also the shaft voltage generated by the motor during operation. However, considering that the target transmission shaft may not be connected to a non-rotating body, the shaft voltage sampling point cannot be determined at this time. However, the stator core of the motor may also generate electrical corrosion as the magnetic flux intersecting the shaft with the rotation of the magnetic poles changes. At the same time, since the target transmission shaft and the rotor are fixedly connected, one side of the rotor can also be directly determined as the shaft voltage sampling point of the target transmission shaft. This avoids the situation where the shaft voltage generated by the motor is ignored when the target transmission shaft connected to the rotor is not connected to a non-rotating body, thereby enabling the shaft voltages generated by each transmission shaft and the stator core of the motor to be accurately collected later.

[0061] For example, Figure 2 As shown, since one of the transmission shafts is fixedly connected to the rotor, the left side where the one shaft is connected to the non-rotating body can be used as the shaft voltage sampling point of the one shaft and the motor; alternatively, the left side of the motor rotor can be used as sampling point A, in which case sampling point A is also the shaft voltage sampling point of the one shaft.

[0062] In one embodiment, after determining the shaft voltage sampling point of each transmission shaft, the shaft voltage sampling point can be set at the two wheel ends of the drive structure, such as Figure 2 The two wheel ends shown are given loads fitted according to the preset road spectrum, such as wheels, and then after the motor is driven by the inverter, voltage sampling is performed from each shaft voltage sampling point to obtain the first shaft voltage of each shaft voltage sampling point, so that the shaft voltage of the bearings of each transmission shaft of the drive structure can be fully measured, so that the measured first electrical corrosion measurement result is more in line with the actual situation.

[0063] In one embodiment, determining a first electrical corrosion measurement result of a bearing of each of the transmission shafts according to the first shaft voltage at each of the shaft voltage sampling points includes:

[0064] When the first shaft voltage is greater than or equal to a preset voltage, it is determined that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage.

[0065] In one embodiment, when the first shaft voltage of any shaft voltage sampling point is obtained, the first shaft voltage is compared with a preset voltage. If the first shaft voltage is less than the preset voltage, it means that the voltage cannot break through the bearing oil film, and no shaft current will be generated at this time, so the bearing of the transmission shaft corresponding to the shaft voltage sampling point will not be electro-corroded. Therefore, the first electro-corrosion measurement result of the bearing of the transmission shaft corresponding to the first shaft voltage can be determined to be normal. If the first shaft voltage is greater than or equal to the preset voltage, it means that the voltage will break through the bearing oil film and generate shaft current, which may cause electro-corrosion of the bearing of the transmission shaft corresponding to the shaft voltage sampling point. Therefore, the first electro-corrosion measurement result of the bearing of the transmission shaft corresponding to the first shaft voltage can be determined to be electro-corrosion. Among them, the preset voltage can be set according to the actual situation, that is, the minimum voltage that can break through the bearing oil film is set to the preset voltage.

[0066] Considering that electrical corrosion requires time to accumulate, in order to further improve the accuracy of electrical corrosion measurement results, in one embodiment, when the first shaft voltage is greater than or equal to a preset voltage, determining that electrical corrosion exists in the bearing of the transmission shaft corresponding to the first shaft voltage includes:

[0067] When the first shaft voltage is greater than or equal to a preset voltage, determining that the transmission shaft mark corresponding to the first shaft voltage is in an abnormal state;

[0068] It is determined that the duration of the abnormal state is greater than or equal to a preset duration, and the bearing of the transmission shaft corresponding to the first shaft voltage is marked as having electrical corrosion.

[0069] In one embodiment, if the first shaft voltage is greater than or equal to a preset voltage, it indicates that the voltage will break through the bearing oil film and generate shaft current, which may cause electrical corrosion of the bearing of the transmission shaft corresponding to the shaft voltage sampling point. At this time, the transmission shaft corresponding to the first shaft voltage can be marked as an abnormal state. That is, it means that the current first shaft voltage of the transmission shaft has broken through the bearing oil film and generated shaft current. At this time, the duration of the abnormal state of the transmission shaft is detected, that is, the duration of the first shaft voltage being greater than or equal to the preset voltage. If the duration of the abnormal state is greater than or equal to the preset duration, it means that over time, electrical corrosion has occurred in the bearing of the transmission shaft. At this time, the bearing of the transmission shaft is marked as having electrical corrosion. The preset duration can be determined based on a large number of bearing electrical corrosion test results.

[0070] In one embodiment, considering that friction between a rotating body and a non-rotating body may generate static charge, in addition to determining whether electrical corrosion occurs in the bearings through shaft sampling points on the transmission shaft, the following steps are also included:

[0071] Determining, according to the drive structure, an outer ring voltage sampling point on any non-rotating body connected to any transmission shaft in the drive structure;

[0072] determining a second electrical corrosion measurement result of the bearing of each of the transmission shafts according to the second shaft voltage at the outer ring voltage sampling point;

[0073] Wherein, each of the non-rotating bodies shares a common ground.

[0074] In one embodiment, since the friction between the non-rotating bodies and the transmission shaft in each drive structure generates static charge, and each non-rotating body shares a ground power supply, the voltage of all non-rotating bodies is unified. In this case, any non-rotating body or multiple non-rotating bodies can be determined as the outer ring voltage sampling point, such as Figure 2 As shown, sampling point B can be used as the outer ring voltage sampling point.

[0075] After the outer ring voltage sampling point, a second shaft voltage at the outer ring voltage sampling point can be collected to determine whether a second electrical corrosion measurement result indicates that a bearing of each transmission shaft is corroded. Specifically, if the second shaft voltage is less than a preset voltage, the second electrical corrosion measurement result indicates that no bearing of each transmission shaft is corroded; if the second shaft voltage is greater than or equal to the preset voltage, the second electrical corrosion measurement result indicates that a bearing of each transmission shaft is corroded.

[0076] By determining the outer ring voltage sampling point on any non-rotating body connected to any drive shaft in the drive structure, and determining the second electrical corrosion measurement result of the bearing of each drive shaft based on the second shaft voltage at the outer ring voltage sampling point, it is possible to further judge whether the bearing has electrical corrosion, thereby improving the accuracy of vehicle bearing electrical corrosion measurement.

[0077] In one embodiment, after obtaining the second electrical corrosion measurement result, the first electrical corrosion measurement result of the bearings of each transmission shaft can be integrated with the second electrical corrosion measurement result to form a complete electrical corrosion measurement report as the target electrical corrosion measurement result of each bearing, which is convenient for users to review.

[0078] The vehicle bearing electrical corrosion measuring device provided in the present application is described below. The vehicle bearing electrical corrosion measuring device described below and the vehicle bearing electrical corrosion measuring method described above can be referenced to each other.

[0079] In one embodiment, if Figure 3 As shown, a vehicle bearing electrical corrosion measuring device is provided, comprising:

[0080] The sampling point determination module 210 is configured to determine the shaft voltage sampling point of each transmission shaft from each transmission shaft according to a drive structure formed by connecting a motor, a non-rotating body, and each transmission shaft in the vehicle;

[0081] The electrical corrosion measurement module 220 is configured to determine a first electrical corrosion measurement result of the bearing of each of the transmission shafts according to the first shaft voltage at each of the shaft voltage sampling points.

[0082] By determining the shaft voltage sampling point of each drive shaft from each drive shaft in a drive structure connected by a motor, a non-rotating body and each drive shaft to perform voltage sampling, the first shaft voltage of each drive shaft is obtained, and the corrosion result of each drive shaft is determined based on the first shaft voltage of each drive shaft. The shaft voltage under multi-stage transmission is used to measure the electrical corrosion of vehicle bearings, so that the obtained electrical corrosion measurement results can be more consistent with the actual electrical corrosion results of the vehicle under electric drive, thereby improving the accuracy of vehicle bearing electrical corrosion measurement.

[0083] In one embodiment, the sampling point determination module 210 is specifically configured to:

[0084] According to the driving structure, a side of the transmission shaft connected to the non-rotating body is determined as a shaft voltage sampling point of the transmission shaft.

[0085] In one embodiment, the sampling point determination module 210 is specifically configured to:

[0086] Determine that the transmission shaft is a target transmission shaft connected to the rotor in the motor, and determine the side of the target transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the target transmission shaft; or

[0087] The rotor in the motor is determined as the shaft voltage sampling point of the target transmission shaft.

[0088] In one embodiment, the electrical corrosion measurement module 220 is specifically configured to:

[0089] When the first shaft voltage is greater than or equal to a preset voltage, it is determined that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage.

[0090] In one embodiment, the electrical corrosion measurement module 220 is specifically configured to:

[0091] When the first shaft voltage is greater than or equal to a preset voltage, determining that the transmission shaft mark corresponding to the first shaft voltage is in an abnormal state;

[0092] It is determined that the duration of the abnormal state is greater than or equal to a preset duration, and the bearing of the transmission shaft corresponding to the first shaft voltage is marked as having electrical corrosion.

[0093] In one embodiment, the electrical corrosion measurement module 220 is further configured to:

[0094] Determining, according to the drive structure, an outer ring voltage sampling point on any non-rotating body connected to any transmission shaft in the drive structure;

[0095] determining a second electrical corrosion measurement result of the bearing of each of the transmission shafts according to the second shaft voltage at the outer ring voltage sampling point;

[0096] Wherein, each of the non-rotating bodies shares a common ground.

[0097] In one embodiment, the electrical corrosion measurement module 220 is further configured to:

[0098] A target electrical corrosion measurement result of a bearing of a vehicle propeller shaft is generated based on the first electrical corrosion measurement result and the second electrical corrosion measurement result.

[0099] Figure 4 An example of a physical structure diagram of an electronic device is shown below. Figure 4 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call a computer program in the memory 830 to execute a vehicle bearing electrical corrosion measurement method, for example, including:

[0100] According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body and each transmission shaft, a shaft voltage sampling point of each transmission shaft is determined from each transmission shaft;

[0101] A first electrical corrosion measurement result of the bearing of each of the transmission shafts is determined according to the first shaft voltage of each of the shaft voltage sampling points.

[0102] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0103] On the other hand, an embodiment of the present application further provides a storage medium, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can perform the vehicle bearing electrical corrosion measurement method provided in the above embodiments, for example, including:

[0104] According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body and each transmission shaft, a shaft voltage sampling point of each transmission shaft is determined from each transmission shaft;

[0105] A first electrical corrosion measurement result of the bearing of each of the transmission shafts is determined according to the first shaft voltage of each of the shaft voltage sampling points.

[0106] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units. That is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0107] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for measuring electrical corrosion of vehicle bearings, characterized in that: include: According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body and each transmission shaft, a shaft voltage sampling point of each transmission shaft is determined from each transmission shaft; determining a first electrical corrosion measurement result of a bearing of each of the transmission shafts according to a first shaft voltage at each of the shaft voltage sampling points; determining a second electrical corrosion measurement result of a bearing of each of the transmission shafts according to a second shaft voltage at an outer ring voltage sampling point on at least one of the non-rotating bodies connected to any of the transmission shafts in the drive structure; Wherein, each of the non-rotating bodies shares a common ground.

2. The vehicle bearing electrical corrosion measurement method according to claim 1, characterized in that: According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body, and each transmission shaft, determining a shaft voltage sampling point of each transmission shaft from each transmission shaft includes: According to the driving structure, a side of the transmission shaft connected to the non-rotating body is determined as a shaft voltage sampling point of the transmission shaft.

3. The vehicle bearing electrical corrosion measurement method according to claim 1 or 2, characterized in that: According to a driving structure in a vehicle formed by connecting a motor, a non-rotating body, and each transmission shaft, determining a shaft voltage sampling point of each transmission shaft from each transmission shaft includes: Determine that the transmission shaft is a target transmission shaft connected to the rotor in the motor, and determine the side of the target transmission shaft connected to the non-rotating body as the shaft voltage sampling point of the target transmission shaft; or The rotor in the motor is determined as a shaft voltage sampling point of the target transmission shaft.

4. The vehicle bearing electrical corrosion measurement method according to claim 1, characterized in that: Determining a first electrical corrosion measurement result of a bearing of each of the transmission shafts according to the first shaft voltage of each of the shaft voltage sampling points includes: When the first shaft voltage is greater than or equal to a preset voltage, it is determined that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage.

5. The vehicle bearing electrical corrosion measurement method according to claim 4, characterized in that: When the first shaft voltage is greater than or equal to a preset voltage, determining that electrical corrosion exists on the bearing of the transmission shaft corresponding to the first shaft voltage includes: When the first shaft voltage is greater than or equal to a preset voltage, determining that the transmission shaft mark corresponding to the first shaft voltage is in an abnormal state; It is determined that the duration of the abnormal state is greater than or equal to a preset duration, and the bearing of the transmission shaft corresponding to the first shaft voltage is marked as having electrical corrosion.

6. The vehicle bearing electrical corrosion measurement method according to claim 1, characterized in that: Also includes: A target electrical corrosion measurement result of a bearing of a vehicle propeller shaft is generated based on the first electrical corrosion measurement result and the second electrical corrosion measurement result.

7. A vehicle bearing electrical corrosion measuring device, characterized in that: include: a sampling point determination module, configured to determine a shaft voltage sampling point of each transmission shaft from each transmission shaft according to a drive structure in a vehicle formed by connecting a motor, a non-rotating body, and each transmission shaft; an electrical corrosion measurement module, configured to determine a first electrical corrosion measurement result of a bearing of each of the transmission shafts according to a first shaft voltage at each of the shaft voltage sampling points; The electrical corrosion measurement module is also used for: The second electrical corrosion measurement result of the bearing of each transmission shaft is determined based on the second shaft voltage of the outer ring voltage sampling point on at least one non-rotating body connected to any of the transmission shafts in the drive structure; wherein the non-rotating bodies have a common ground.

8. An electronic device comprising a processor and a memory storing a computer program, characterized in that: When the processor executes the computer program, the vehicle bearing electrical corrosion measurement method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the vehicle bearing electrical corrosion measurement method according to any one of claims 1 to 6 is implemented.

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