Motor detection method, hybrid transmission detection method and system

Abstract

The invention belongs to the technical field of testing, and particularly relates to the technical field of motor testing, in particular to a motor detection method and a hybrid transmission detection method and system.The motor detection method comprises the steps that a control module collects the waveform of a to-be-detected motor through at least two collection channels, the waveforms acquired by the acquisition channels are integrated to acquire an integrated waveform, and the to-be-tested motor is zeroed according to the integrated waveform; wherein when one acquisition channel performs acquisition, the other acquisition channel is in a closed state to release residual electric energy in the acquisition channel in the closed state, so that the residual electric energy is released, misjudgment of a fault code after the motor is installed due to the residual electric energy is avoided, and misjudgment of the state of the motor is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of testing, specifically relates to the technical field of motor testing, and particularly relates to a motor detection method, a hybrid transmission detection method and a system. Background Art

[0002] After the angular index of the motor is zeroed, there will be residual induced electricity. The residual induced electricity in the motors installed on new energy vehicles will cause motor fault codes to appear on the vehicles, resulting in misjudgment of the motor state.

[0003] Therefore, due to the technical problem of misjudgment of motor faults caused by the residual induced electricity after the angular index of the motor is zeroed, it is necessary to design a motor detection method, a hybrid transmission detection method and a system.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, it is not considered that the above description constitutes the information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide a motor detection method, a hybrid transmission detection method and a system.

[0006] In a first aspect, the embodiments of the present disclosure provide a motor detection method, including: When zeroing the angular index of the motor, the control module acquires the waveforms of the motor to be detected through at least two acquisition channels, then integrates the waveforms obtained by each acquisition channel to obtain an integrated waveform, and zeroes the motor to be detected according to the integrated waveform; where When acquiring through one acquisition channel, the other acquisition channel is in a closed state to release the residual electric energy in the closed acquisition channel.

[0007] In an optional implementation manner, the acquisition channel includes: a switching circuit and ADC a sampling chip; The switching circuit is electrically connected to at least two detection heads, and both detection heads are connected to the motor to be detected; The ADC sampling chip is electrically connected to the switching circuit, and the ADC sampling chip is electrically connected to the control module; The ADC sampling chip is configured to control the switching circuit to alternately connect the corresponding detection heads to the motor to be detected, acquire the waveforms through the ADC sampling chip and send them to the control module, and only one detection head is connected to the motor to be detected at the same time during the process of acquiring the waveforms of the motor to be detected.

[0008] In an alternative embodiment, the method for the control module to collect the waveforms of the motor to be detected through at least two acquisition channels includes: The control module, according to ADC the sampling frequency of the sampling chip in the acquisition channels, controls the two acquisition channels to alternately acquire the waveforms of the motor to be detected, and in the same acquisition channel ADC the sampling chip controls the detection heads to alternately connect with the motor to be detected to acquire waveforms. When one acquisition channel acquires waveforms, only one detection head is connected to the motor to be detected to acquire waveforms, and at this time, the other detection heads are not connected to the motor to be detected, so as to release the residual electric energy of the other detection head remaining in the same acquisition channel through the operation of the switching circuit, and release the residual electric energy of the other acquisition channel through the operation of the switching circuit in the other acquisition channel.

[0009] In an alternative embodiment, the method for integrating the waveforms acquired by each acquisition channel to obtain an integrated waveform includes: The control module splices the waveforms into an integrated waveform according to the time sequence, and displays it through an oscilloscope connected to the control module, and zeroes the motor to be measured according to the integrated waveform.

[0010] In an alternative embodiment, after the zeroing of the motor to be measured is completed, the control module controls the two acquisition channels to alternately connect to the zeroed motor. At this time, the control module determines whether waveforms can still be acquired. If so, it is determined that there is still residual electric energy in the zeroed motor, otherwise it is determined that the residual electric energy of the zeroed motor has been released.

[0011] In a second aspect, the embodiments of the present disclosure also provide a method for detecting a hybrid transmission, including: After replacing the motor in the whole vehicle, the above motor detection method is used to obtain the integrated waveform of the replaced motor; The control module adopts a corresponding detection strategy according to the model of the replaced motor, so as to zero the replaced motor according to the detection strategy and the integrated waveform.

[0012] In an alternative embodiment, the method for the control module to adopt a corresponding detection strategy according to the model of the replaced motor includes: When the replaced motor is ISG motor, first MCU judge that the vehicle state is normal, the vehicle gear is P gear, the clutch is in neutral, the battery pack SOC >50% and the engine is in an idle state, and then start to zero ISG the motor; When the replaced motor is TM motor, first MCU judge that the vehicle state is normal, the vehicle gear is N gear, the clutch is in the first gear and the battery packSOC >50%, and then start to TM zero the motor.

[0013] In a third aspect, an embodiment of the present disclosure further provides a motor detection system, including: An acquisition module configured to acquire waveforms of a motor to be detected through at least two acquisition channels; An integration module configured to integrate the waveforms acquired by each acquisition channel to obtain an integrated waveform.

[0014] In a fourth aspect, an embodiment of the present disclosure further provides a non-transitory readable storage medium, on which a computer program / instructions are stored, and when the computer program / instructions are executed by a processor, the steps of the above-mentioned motor detection method are implemented.

[0015] In a fifth aspect, an embodiment of the present disclosure further provides a program product including instructions, and when the instructions are executed, a control module is caused to execute the steps of the above-mentioned motor detection method.

[0016] The beneficial effects of the present invention are as follows. The motor detection method includes: a control module acquires waveforms of a motor to be detected through at least two acquisition channels, then integrates the waveforms acquired by each acquisition channel to obtain an integrated waveform, and zeroes the motor to be detected according to the integrated waveform; when collecting through one acquisition channel, the other acquisition channel is in a closed state to release the residual electric energy in the closed acquisition channel, thereby realizing the release of the residual electric energy, avoiding misjudgment of fault codes when the motor is installed due to the residual electric energy, and avoiding misjudgment of the motor state.

[0017] Other features and advantages of the present invention will be described in the following description of the specification, and part of them will be obvious from the description of the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0018] To make the above objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby exemplified and described in detail below in conjunction with the accompanying drawings. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a flowchart of a motor detection method provided by an embodiment of the present disclosure; Figure 2 Schematic diagram of a collection channel provided by an embodiment of the present disclosure; Figure 3 Schematic diagram of the connection of a detection head provided by an embodiment of the present disclosure. Detailed implementation manners

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific features, structures, or characteristics after the phrase can be included in at least one embodiment of the present disclosure. Therefore, the specific features, structures, or characteristics can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "for the purpose of serving as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. On the contrary, the use of the terms "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0023] When the motor is zeroed, a power supply needs to be loaded. However, the inventor found that there will be residual induced electricity on the motor after the zeroing is completed, and the induced electricity will cause a fault code of the motor to appear on the vehicle, resulting in a misjudgment of the motor.

[0024] All the defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure in this article for the above problems should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0025] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0027] As Figure 1As shown, at least one disclosed embodiment provides a method for detecting an electric motor, including: when zeroing the angular marker of the electric motor, the control module acquires the waveforms of the electric motor to be detected through at least two acquisition channels, then integrates the waveforms obtained by each acquisition channel to obtain an integrated waveform, and zeroes the electric motor to be detected according to the integrated waveform; when acquiring waveforms through one acquisition channel, the other acquisition channel is in a closed state to release the residual electric energy in the closed acquisition channel, thereby realizing the release of the residual electric energy, avoiding misjudgment of fault codes when the electric motor is installed due to the residual electric energy, and avoiding misjudgment of the state of the electric motor.

[0028] As Figure 2 shown, in an alternative embodiment, the acquisition channel includes: a switching circuit and ADC a sampling chip; the switching circuit is electrically connected to at least two detection heads, and both detection heads are connected to the electric motor to be detected; the ADC sampling chip is electrically connected to the switching circuit, and the ADC sampling chip is electrically connected to the control module; the ADC sampling chip is configured to control the switching circuit to alternately connect the corresponding detection head to the electric motor to be detected, acquire the waveform through the ADC sampling chip and send it to the control module, and only one detection head is connected to the electric motor to be detected at the same time during the process of acquiring the waveform of the electric motor to be detected.

[0029] In this embodiment, ADC the sampling chip can control the switching circuit through PWM a signal to control the working time of the switching circuit.

[0030] As Figure 3 shown, in this embodiment, the switching circuit can be a relay and its surrounding circuits, and the specific model of the relay can be Panasonic AQW 212 EHAX .

[0031] In this embodiment, the ADC sampling chips in the two acquisition channels can be electrically connected to obtain the output waveforms from each other.

[0032] In an alternative embodiment, the method by which the control module acquires the waveforms of the electric motor to be detected through at least two acquisition channels includes: the control module controls the two acquisition channels to alternately acquire the waveforms of the electric motor to be detected according to the ADC sampling frequency of the sampling chip in the acquisition channel, and in the same acquisition channel ADCThe sampling chip controls the detection heads to alternately connect with the motor to be detected to obtain waveforms. When one acquisition channel obtains waveforms, only one detection head is connected to the motor to be detected to obtain waveforms, and at this time, the other detection heads are not connected to the motor to be detected, so as to release the residual electric energy of the other detection head in the same acquisition channel through the operation of the switching circuit, and release the residual electric energy of the other acquisition channel through the operation of the switching circuit in the other acquisition channel.

[0033] In this embodiment, when one acquisition channel is connected to the motor to be detected and obtains waveforms, the other acquisition channel is not connected to the motor to be detected, and the switching circuit in the other acquisition channel operates to consume the residual electric energy (induced electricity) in this acquisition channel.

[0034] In this embodiment, as Figure 2 shown, the switching circuit in one acquisition channel is connected to detection heads CH 1 and CH 2, and the switching circuit in the other acquisition channel is connected to detection heads CH 3 and CH 4. During the specific process of obtaining waveforms, when detection head CH 1 is connected to the motor to be detected, detection heads CH 2, CH 3 and CH 4 are not connected to the motor to be detected. At this time, a section of waveform is obtained, and then detection head CH 1 is disconnected from the motor to be detected, and detection head CH 3 is connected to the motor to be detected and obtains waveforms. At this time, the switching circuit corresponding to detection head CH 1 operates to consume the residual electric energy. After detection head CH 3 is connected to the motor to be detected and obtains waveforms, detection head CH 3 is disconnected from the motor to be detected, and detection head CH 2 is connected to the motor to be detected to obtain waveforms. At this time, the switching circuit corresponding to detection head CH 3 operates to consume the residual electric energy, and the switching circuit corresponding to detection head CH 1 still consumes the residual electric energy when detection head CH 1 is connected to the motor to be detected, so as to avoid the situation that the residual electric energy cannot be completely consumed due to too fast switching of the acquisition channel, and so on in a cycle.

[0035] In this embodiment, the switching frequency of the acquisition channel can be adjusted according to ADC the acquisition frequency of the sampling chip.

[0036] In an alternative embodiment, the method of integrating the waveforms acquired by each acquisition channel to obtain an integrated waveform includes: the control module splicing the waveforms into an integrated waveform according to the time sequence, displaying the integrated waveform through an oscilloscope connected to the control module, and zeroing the motor under test according to the integrated waveform.

[0037] In this embodiment, the control module can splice the waveforms according to the time sequence of the acquired waveform time period, that is, connecting the tail end of the waveform acquired in the previous time period to the head end of the waveform acquired in the next time period to splice into an integrated waveform. By switching the acquisition channel to consume the residual electric energy, the waveform can be obtained more accurately, and then the integrated waveform can be obtained more accurately, and the motor can be zeroed according to the accurate integrated waveform.

[0038] In an alternative embodiment, after the zeroing of the motor under test is completed, the control module controls the two acquisition channels to be alternately connected to the zeroed motor. At this time, the control module determines whether a waveform can still be acquired. If so, it is determined that there is still residual electric energy in the zeroed motor, otherwise it is determined that the residual electric energy of the zeroed motor has been released.

[0039] In this embodiment, after the motor zeroing is completed, the switching circuit in the two acquisition channels can continue to work or work alternately to consume the residual electric energy. During this process, the waveform output by the control module can be used to determine whether the electric energy is completely consumed. When there is still a waveform output, it is determined that the electric energy is not completely consumed.

[0040] In this embodiment, during the process of zeroing the motor, the control module can be MCU electrically connected to output the integrated waveform to MCU for comparison and judgment.

[0041] At least one other publicly disclosed embodiment also provides a method for detecting a hybrid transmission, including: after replacing the motor in the whole vehicle, using the above-mentioned motor detection method to obtain the integrated waveform of the replaced motor; the control module adopting a corresponding detection strategy according to the model of the replaced motor, so as to zero the replaced motor according to the detection strategy and the integrated waveform.

[0042] In an alternative embodiment, the method for the control module to adopt a corresponding detection strategy according to the model of the replaced motor includes: when the replaced motor is ISG ( Integrated Starter Generator ) motor, first MCU judge that the vehicle state is normal, the vehicle gear is P gear, the clutch is in neutral, the battery pack SOC > 50% and the engine is in idle state, and then start to zero the ISG motor; when the replaced motor is TM ( Transient Motor ) motor, firstMCU Judge that the vehicle status is normal, the vehicle gear is N gear, the clutch is in the first gear and the battery pack SOC > 50%, and then start to TM zero the motor. The battery pack SOC That is, the remaining battery power 。

[0043] In this embodiment, after the after-sales personnel complete ISG replacing the motor, turn on the low-voltage power of the vehicle and be in P gear state, step on the accelerator deeply when turning on the high-voltage to confirm that the vehicle's power battery pack SOC is greater than half, release the accelerator and ensure that the vehicle stops in the high-voltage ready state, the vehicle is stationary in the high-voltage normal state without a fault light P gear, the clutch is in neutral, the battery pack SOC > 50%. Use a diagnostic instrument (at least two acquisition channels involved in the above motor detection method are integrated in the diagnostic instrument to obtain ISG the integrated waveform of the motor) to enter the expansion layer and pass the safety check, and send " ISG Learning corner mark officially" UDS request and obtain a positive feedback. MCU After receiving UDS the request, send ISG a corner mark self-learning request to the power domain controller. PDCU After receiving this request, the current cycle is exempted from ISG mode mismatch. PDCU After receiving the motor controller's learning corner mark request, ISG and EMS send an instruction to start the machine. After reaching ISG the rotational speed in the corner mark learning speed section, switch the engine to pure idle control. PDCU After the recognition state meets the learning conditions and is stable, send MCU to ISG a corner mark learning request. MCU After receiving PDCU the corner mark learning request, check: the vehicle status is normal; the vehicle gear is P gear; the clutch is in neutral; the battery pack SOC > 50%; the engine is in the idle state; and ISG the motor speed meets ISG the corner mark learning conditions; MCU Enter the corner mark self-learning state, and then continuously obtain the ISG integrated waveform of the motor using the above motor detection method for a preset time, and perform ISG motor zeroing (corner mark self-learning), and feedback the success or failure status of the corner mark self-learning to the vehicle. PDCU After receiving ISGSubscript learning success status: Return to the original control mode (engine idle control or torque control). PDCU Received ISG Subscript learning fails or the overall time exceeds the limit by approximately 20 s , then PDCU Control the engine to cut off fuel and stop. After-sales personnel use a diagnostic instrument to read the routine result (success / failure) through UDS service. If successful, apply low-voltage power again and the vehicle can be used normally; if failed, apply low-voltage power again and the vehicle continues to learn. Complete ISG the subscript self-learning process for the entire vehicle end.

[0044] In this embodiment, after the after-sales personnel replace TM the motor, the entire vehicle is placed on a lift and the driving wheels are suspended. First, ensure that ISG the subscript is normal and the battery pack SOC has enough power so that the engine will not start automatically. The driver shifts N gears. The entire vehicle is in a high-voltage ready state, the vehicle is stationary and not in P gear, the clutch is in neutral, and the power battery pack SOC >50%. Use a diagnostic instrument to enter the extended layer and send UDS " TM the subscript learning routine and obtain positive feedback. MCU Send TM the subscript self-learning request. PDCU After receiving the rising edge of the learning request signal, the current cycle does not judge TM / ISG mode abnormality. PDCU Maintain the supply to ISG and TM send the mode request as the torque mode. MCU The feedback mode is the power device operation mode. PDCU Feedback TM Set the after-sales self-learning subscript requirement, N gear state, high-voltage ready state. TCU Control ISG the clutch coupling between TM and PDCU Receive TCU feedback ISG and TM have completed coupling. MCU Check the following status items: Check that the vehicle status is normal; the vehicle gear is N gear; the clutch is in 1st gear; the battery pack SOC >50%; TM the subscript learning request is set; ISG Enter the speed control to ensure that TM the speed is pulled to 2000rpm , TM The motor performs corner mark self - learning, MCU and feedback enters the corner mark self - learning state, lasting for 3 s seconds. After that, it feedbacks that the corner mark self - learning is successful. After normally completing this process, MCU control ISG and TM the rotational speed is cleared to 0, and the TM corner mark learning flag is set to "no corner mark self - learning request". MCU Update UDS the routine result (success / failure). PDCU Feedback TM to clear the after - sales self - learning corner mark requirement, ISG and TM the rotational speed is zero. TCU Execute to empty the clutch solenoid valve, empty the main oil circuit pressure, and the electronic pump rotational speed returns to normal control. PDCU Feedback to disengage the first gear and feedback that the actual gear is "clutch neutral". UDS The routine service feedbacks the learning state, and the after - sales personnel use UDS the service to read the routine result (success / failure): If successful, reconnect the low - voltage power supply and the vehicle can be used normally; if failed, reconnect the low - voltage power supply and the vehicle continues to learn. Complete TM the corner mark self - learning process.

[0045] At least one other publicly disclosed embodiment also provides a motor detection system, including: an acquisition module configured to acquire waveforms of a motor to be detected through at least two acquisition channels; an integration module configured to integrate the waveforms acquired by each acquisition channel to obtain an integrated waveform.

[0046] In this embodiment, the functional steps of each module can be integrated in a control module.

[0047] At least one other publicly disclosed embodiment also provides a non - transitory readable storage medium, on which computer programs / instructions are stored, and when the computer programs / instructions are executed by a processor, the steps of the above - mentioned motor detection method are implemented.

[0048] At least one other publicly disclosed embodiment also provides a program product containing instructions, which when executed, causes the control module to execute the steps of the above - mentioned motor detection method.

[0049] In summary, the motor detection method includes: the control module collects waveforms of the motor to be detected through at least two acquisition channels, then integrates the waveforms obtained by each acquisition channel to obtain an integrated waveform, and zero-adjusts the motor to be detected according to the integrated waveform; when one acquisition channel is collecting, the other acquisition channel is in a closed state to release the residual electrical energy in the closed acquisition channel, thereby realizing the release of the residual electrical energy, avoiding misjudgment of fault codes when the motor is installed due to the residual electrical energy, and avoiding misjudgment of the motor state.

[0050] The disclosures and other solutions, examples, embodiments, modules, and functional operations described in this document can be implemented in digital electronic circuits, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or a combination of one or more of them. The disclosed content and other embodiments can be implemented as one or more computer program products, that is, modules of computer program instructions encoded on a tangible and non-volatile computer-readable medium for a data processing apparatus to execute or control the operation of the data processing apparatus. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a storage device, a substance composition affecting a machine-readable propagated signal, or a combination of one or more of them. In addition to the hardware, the apparatus may also include code for creating an execution environment for the computer program, for example, code constituting the processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. The propagated signal is a human-generated signal, for example, a machine-generated electrical, optical, or electromagnetic signal that is generated to encode information for transmission to a suitable receiver device.

[0051] A computer program (also referred to as a program, software, software application, script, or code) can be written in any form of programming language (including a compiled language or an interpreted language) and can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. The program can be stored in a part of a file that holds other programs or data (for example, one or more scripts in a markup language document), in a single file dedicated to the program, or in multiple coordinated files (for example, files that store one or more modules, subroutines, or portions of code). A computer program can be deployed to be executed on one or more computers, which are located at one site or distributed across multiple sites and interconnected by a communication network.

[0052] The processes and logical flows described in this document can be executed by one or more programmable processors that execute one or more computer programs to perform functions by operating on input data and generating output. The processes and logical flows can also be executed by special-purpose logic circuitry, and the apparatus can also be implemented as special-purpose logic circuitry, e.g., FPGA (field programmable gate array) or ASIC (application specific integrated circuit).

[0053] For example, processors suitable for executing computer programs include both general and special purpose microprocessors, and any one or more of any type of digital computer. Generally, a processor will receive instructions and data from a read only memory or a random access memory or both. The basic components of a computer are a processor that executes instructions and one or more storage devices that store instructions and data. Generally, a computer will also include one or more mass storage devices for storing data, such as, magnetic disks, magneto-optical disks, or optical disks, or operatively coupled to receive data from or transfer data to a mass storage device, or both. However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media, and memory devices, including for example semiconductor memory devices, such as erasable programmable read only memory ( EPROM ), electrically erasable programmable read only memory ( EEPROM ), and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and compact disc read only memory ( CD ROM ) and digital versatile disc read only memory ( DVD - ROM ) discs. The processor and the memory can be supplemented by, or incorporated in, special-purpose logic circuitry.

[0054] Although several embodiments are provided in the present disclosure, it should be understood that the disclosed systems and methods can be embodied in many other specific forms without departing from the spirit or scope of the present disclosure. The present examples are considered illustrative and not restrictive, and are not limited to the details given. For example, various elements or components can be combined or integrated in another system, or some features can be omitted or not implemented.

[0055] In several embodiments provided in this document, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of devices, methods, and computer program products according to multiple embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0056] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A motor detection method, characterized in that: include: When the motor is zeroed, the control module collects the waveform of the motor to be tested through at least two acquisition channels, then integrates the waveforms obtained by each acquisition channel to obtain an integrated waveform, and zeroes the motor to be tested according to the integrated waveform; in When one acquisition channel is collecting, the other acquisition channel is in a closed state, and the residual electric energy in the closed acquisition channel is released.

2. The motor detection method according to claim 1, characterized in that: The acquisition channel includes: a switching circuit and ADC Sampling chip; The switching circuit is electrically connected to at least two detection heads, and the detection heads are both connected to the motor to be detected; Said ADC The sampling chip is electrically connected to the switching circuit, and the ADC The sampling chip is electrically connected to the control module; Said ADC The sampling chip is configured to control the switching circuit so that the corresponding detection head is alternately connected to the motor to be detected. ADC The sampling chip acquires the waveform and sends it to the control module. During the process of acquiring the waveform of the motor to be detected, only one detection head is connected to the motor to be detected at the same time.

3. The motor detection method according to claim 1, characterized in that: The method in which the control module collects the waveform of the motor to be detected through at least two collection channels includes: The control module is based on the acquisition channel ADC The sampling frequency of the sampling chip controls the two acquisition channels to alternately acquire the waveform of the motor to be tested, and the same acquisition channel ADC The sampling chip controls the detection heads to be alternately connected with the motor to be detected to obtain waveforms. When one acquisition channel is acquiring waveforms, only one detection head is connected with the motor to be detected to acquire waveforms. At this time, other detection heads are not connected with the motor to be detected, so as to release the residual electric energy of another detection head in the same acquisition channel through the operation of the switching circuit, and release the residual electric energy of another acquisition channel through the operation of the switching circuit in the other acquisition channel.

4. The motor detection method according to claim 3, characterized in that: The method of integrating the waveforms acquired by each acquisition channel to obtain an integrated waveform includes: The control module splices the waveforms into an integrated waveform according to the time sequence, displays the waveform through an oscilloscope connected to the control module, and performs zero adjustment on the motor to be tested according to the integrated waveform.

5. The motor detection method according to claim 1, characterized in that: After the motor to be tested is zeroed, the control module controls the two acquisition channels to be alternately connected to the motor after zeroing. At this time, the control module determines whether the waveform can still be obtained. If so, it is determined that there is still residual electrical energy in the motor after zeroing. Otherwise, it is determined that the residual electrical energy of the motor after zeroing has been released.

6. A hybrid transmission detection method, characterized in that: include: After the motor of the vehicle is replaced, the motor detection method as claimed in claim 1 is used to obtain the integrated waveform of the replaced motor; The control module adopts a corresponding detection strategy according to the model of the replaced motor, so as to zero the replaced motor according to the detection strategy and the integrated waveform.

7. The hybrid transmission detection method according to claim 6, characterized in that: The method in which the control module adopts a corresponding detection strategy according to the motor model after replacement includes: When the motor is replaced ISG When the motor is MCU Determine whether the vehicle is in normal condition and the gear position is P gear, clutch is in neutral, battery pack SOC >50% and the engine is at idle speed, then start ISG Motor zeroing; When the motor is replaced TM When the motor is MCU Determine whether the vehicle is in normal condition and the gear position is N Gear, clutch is 1 gear and battery pack SOC >50%, then start TM Motor zeroing.

8. A motor detection system, characterized in that: include: An acquisition module, which is configured to acquire the waveform of the motor to be detected through at least two acquisition channels; An integration module, configured to integrate the waveforms acquired by each acquisition channel to acquire an integrated waveform; The control module is configured to zero the motor to be tested according to the integrated waveform. When one acquisition channel is collecting data, the other acquisition channel is in a closed state, and the residual electric energy in the closed acquisition channel is released.

9. A non-transitory readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instruction is executed by a processor, the steps of the motor detection method according to any one of claims 1 to 5 are implemented.

10. A program product comprising instructions, characterized in that When the instruction is executed, the control module executes the steps of the motor detection method according to any one of claims 1 to 5.

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