New energy motor performance detection device and method

Abstract

The invention belongs to the field of new energy automobiles, and relates to a new energy motor performance detection device and method, and the technical scheme comprises a fixed support, a detection rotor, a detection stator, a torque sensor, a temperature sensor and an electric leakage detection sensor. And the fixed bracket is fixedly connected with the ground. Rotating shafts are arranged at two ends of the detection rotor, a magnetic block is arranged in the middle of the detection rotor, the detection rotor is movably arranged on the fixed support, and the detection rotor has a trend of rotating around the center line of the detection rotor. The detection stator is arranged on the fixing support, the whole detection stator is of a tubular structure, and the detection rotor is arranged on the inner side of the detection stator. And the torque sensor is fixed at one end of a rotating shaft of the detection rotor. The temperature sensor is configured to obtain the temperature of a motor shell of the new energy vehicle. The electric leakage detection sensor is electrically connected with the motor shell, and the electric leakage detection sensor is configured to detect the insulativity of the motor.

Description

Technical Field

[0001] The present invention belongs to the field of new energy vehicles and relates to a new energy motor performance detection device and method. Background Art

[0002] With the use of new energy vehicles, the motors of new energy vehicles have certain problems such as aging, that is, the performance of the motors of new energy vehicles gradually decreases with use.

[0003] At present, there are a large number of devices for testing motor performance, but the equipment for testing motor performance is generally used in laboratories, and the motor needs to be removed from the new energy vehicle for testing. In addition, there are many types of new energy vehicles on the market, and the motor structures are different. That is, when testing the motor performance, it is necessary to adaptively adjust the motor's fixed bracket structure and output shaft height so that the motor output shaft and the load can effectively cooperate.

[0004] It is understandable that when the performance of the motors of new energy vehicles in operation is tested on the market, it is uneconomical and unreasonable to remove and replace the motors and provide a fixed bracket that adapts the motors. How to quickly obtain the performance of the motors efficiently and at low cost is one of the problems that the market urgently needs to solve. Summary of the invention

[0005] In order to overcome the defects in the above-mentioned related technologies, on the one hand, the present invention proposes a new energy motor performance detection device. The new energy motor performance detection device includes: a fixed bracket, a detection rotor, a detection stator, a torque sensor, a temperature sensor and a leakage detection sensor. The fixed bracket is fixedly connected to the ground. The two ends of the detection rotor are rotating shafts, the middle part of the detection rotor is a magnetic block, the detection rotor is movably arranged on the fixed bracket, and the detection rotor has a tendency to rotate around its center line. The detection stator is arranged on the fixed bracket, the detection stator is a tubular structure as a whole, and the detection rotor is arranged on the inner side of the detection stator. The torque sensor is fixed to one end of the rotating shaft of the detection rotor. The temperature sensor is configured to obtain the temperature of the motor housing of the new energy vehicle. The leakage detection sensor is electrically connected to the motor housing, and the leakage detection sensor is configured to detect the insulation of the motor.

[0006] Wherein, the detection stator includes: a stator bracket, a stator coil, a commutator and a Hall sensor. The stator bracket as a whole is a tubular structure with two ends open, and a plurality of mounting grooves are arranged on the side wall of the stator bracket, and the plurality of mounting grooves are evenly arranged along the circumference of the side wall of the stator bracket. At least one stator coil is arranged in each mounting groove. The plurality of stator coils are electrically connected to the commutator, and the commutator is configured to control the direction of the current in the stator coil. The Hall sensor is fixed on the stator bracket, and the Hall sensor is used to obtain the position of the detection rotor.

[0007] Preferably, the detection rotor comprises a plurality of permanent magnets, the plurality of permanent magnets are evenly arranged around a center line of a rotating shaft of the detection rotor, and the N poles and S poles of the plurality of permanent magnets are arranged at intervals.

[0008] Preferably, the new energy motor performance detection device also includes a controller, and the controller is electrically connected to the torque sensor, temperature sensor, leakage detection sensor, commutator and Hall sensor.

[0009] Preferably, a Hall sensor is provided on the inner side wall of the stator bracket, and the Hall sensor comprises a Hall magnetic sensor.

[0010] Preferably, the installation groove is a pipe with two ends open, the inner side wall of the installation groove is provided with two wire grooves, and an anti-slip ring is provided at one end of the installation groove close to the inner side of the stator bracket.

[0011] The stator bracket also includes a closed shell, which is adapted to the structure of one end of the mounting slot close to the outer side of the stator bracket, and is buckled onto the wire slot. A telescopic member is provided on the closed shell, and the telescopic member is used to fix the stator coil.

[0012] Preferably, the two wire grooves in each mounting groove are electrically connected to the commutator, the commutator includes a first output end and a second output end, one of the two wire grooves in the mounting groove is electrically connected to the first output end, and the other of the two wire grooves in the mounting groove is electrically connected to the second output end.

[0013] Preferably, there are at least two commutators, and the mounting slots are divided into a plurality of mounting groups, each mounting group is electrically connected to a corresponding commutator, and the mounting slots in the plurality of mounting groups are arranged alternately.

[0014] Preferably, the new energy motor performance detection device also includes a control circuit, and the control circuit includes: a rectifier circuit, a voltage stabilizing circuit, a thyristor and a current limiting control circuit. The rectifier circuit is electrically connected to the mains. The voltage stabilizing circuit is electrically connected to the rectifier circuit. The anode of the thyristor is electrically connected to the positive output terminal of the voltage stabilizing circuit, and the cathode of the thyristor is electrically connected to the commutator. One end of the current limiting control circuit is electrically connected to the positive output terminal of the voltage stabilizing circuit, and the other end of the current limiting control circuit is electrically connected to the control electrode of the thyristor. The voltage regulating resistor is arranged between the positive output terminal of the voltage stabilizing circuit and the anode of the thyristor.

[0015] Wherein, the current limiting control circuit includes: a first bias resistor, a second bias resistor, a transistor and a current limiting resistor; one end of the first bias resistor and one end of the current limiting resistor are both electrically connected to the positive output end of the voltage stabilizing circuit, the other end of the first bias resistor is connected in series with one end of the second bias resistor, the other end of the second bias resistor is electrically connected to the other end of the voltage regulating resistor, the other end of the current limiting resistor is electrically connected to the collector of the transistor, the base of the transistor is electrically connected to the connection point of the first bias resistor and the second bias resistor, and the emitter of the transistor is electrically connected to the control electrode of the thyristor.

[0016] On the other hand, the present invention also provides a new energy motor performance detection method, which is applicable to the above-mentioned new energy motor performance detection device. The new energy motor performance detection method comprises: using a lift to lift the new energy vehicle and remove the tires of the new energy vehicle. The new energy motor performance detection device is fixed to one side of the new energy vehicle, and the detection rotor and the shaft head of the wheel axle of the new energy vehicle are fixedly connected. Start the new energy vehicle so that the wheel axle of the new energy vehicle drives the detection rotor to rotate. Connect the detection stator to the power supply, monitor the rotation angle of the detection rotor, and control the current direction in the multiple stator coils of the detection stator through the commutator, so that the detection stator forms a magnetic field that hinders the rotation of the detection rotor. The torque output of the wheel axle of the new energy vehicle is collected by the torque sensor, and the motor temperature and insulation of the new energy vehicle are collected at the same time.

[0017] Preferably, the number of stator coils in the detection stator is adjusted to control the intensity of the magnetic field of the detection stator that hinders the rotation of the detection rotor.

[0018] The beneficial effects of the present invention are: The present invention does not need to remove the motor of the new energy vehicle, and provides a load outside the new energy vehicle. It has the advantages of small structure and adjustable load resistance. It can effectively detect the maximum torque of the motor and the heating condition of the motor under high torque, and can quickly detect the motor performance of the new energy vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural diagram of the present invention; Figure 2 It is a cross-sectional view of a part of the present invention; Figure 3 It is a structural diagram of the detection stator of the present invention; Figure 4 It is a structural diagram of the detection stator of the present invention; Figure 5 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] like Figures 1 to 5As shown, the present invention proposes a new energy motor performance detection device. The new energy motor performance detection device includes: a fixed bracket 1, a detection rotor 2, a detection stator 3, a torque sensor 4, a temperature sensor 5 and a leakage detection sensor 6. The fixed bracket 1 is fixedly connected to the ground. The two ends of the detection rotor 2 are rotating shafts, the middle part of the detection rotor 2 is a magnetic block, the detection rotor 2 is movably arranged on the fixed bracket 1, and the detection rotor 2 has a tendency to rotate around its center line. The detection stator 3 is arranged on the fixed bracket 1, the detection stator 3 is a tubular structure as a whole, and the detection rotor 2 is arranged on the inner side of the detection stator 3. The torque sensor 4 is fixed to one end of the rotating shaft of the detection rotor 2. The temperature sensor 5 is configured to obtain the temperature of the motor housing of the new energy vehicle. The leakage detection sensor 6 is electrically connected to the motor housing, and the leakage detection sensor 6 is configured to detect the insulation of the motor.

[0025] The detection stator 3 includes: a stator bracket 31, a stator coil 32, a commutator 33 and a Hall sensor. The stator bracket 31 is a tubular structure with two ends open as a whole. A plurality of mounting grooves are arranged on the side wall of the stator bracket 31, and the plurality of mounting grooves are evenly arranged along the circumference of the side wall of the stator bracket 31. At least one stator coil 32 is arranged in each mounting groove. The plurality of stator coils 32 are electrically connected to the commutator 33, and the commutator 33 is configured to control the current direction in the stator coil 32. The Hall sensor is fixed on the stator bracket 31, and the Hall sensor is used to obtain the position of the detection rotor 2.

[0026] The detection rotor 2 includes a plurality of permanent magnets, which are evenly arranged around the center line of the rotation axis of the detection rotor 2, and the N poles and S poles of the plurality of permanent magnets are arranged at intervals.

[0027] The new energy motor performance detection device also includes a controller, which is electrically connected to the torque sensor 4, the temperature sensor 5, the leakage detection sensor 6, the commutator 33 and the Hall sensor.

[0028] A Hall sensor is disposed on the inner wall of the stator bracket 31 , and the Hall sensor includes a Hall magnetic sensor.

[0029] The installation groove is a pipe with two ends open. Two wire grooves 35 are arranged on the inner wall of the installation groove. An anti-slip ring is arranged at one end of the installation groove close to the inner side of the stator bracket 31 .

[0030] The stator bracket 31 also includes a closed shell 34, which is adapted to the structure of one end of the mounting slot close to the outer side of the stator bracket 31. The closed shell 34 is buckled onto the wire groove 35. A telescopic piece is provided on the closed shell 34, and the telescopic piece is used to fix the stator coil 32.

[0031] The two wire grooves 35 in each installation groove are electrically connected to the commutator 33, and the commutator 33 includes a first output end and a second output end. One of the two wire grooves 35 in the installation groove is electrically connected to the first output end, and the other of the two wire grooves 35 in the installation groove is electrically connected to the second output end.

[0032] There are at least two commutators 33, and the mounting slots are divided into a plurality of mounting groups. Each mounting group is electrically connected to a corresponding commutator 33, and the mounting slots in the plurality of mounting groups are arranged alternately.

[0033] The new energy motor performance detection device also includes a control circuit, which includes: a rectifier circuit 71, a voltage stabilizing circuit 72, a thyristor SCR and a current limiting control circuit. The rectifier circuit 71 is electrically connected to the mains. The voltage stabilizing circuit 72 is electrically connected to the rectifier circuit 71. The anode of the thyristor SCR is electrically connected to the positive output terminal of the voltage stabilizing circuit 72, and the cathode of the thyristor SCR is electrically connected to the commutator 33. One end of the current limiting control circuit is electrically connected to the positive output terminal of the voltage stabilizing circuit 72, and the other end of the current limiting control circuit is electrically connected to the control electrode of the thyristor SCR. The voltage regulating resistor R4 is arranged between the positive output terminal of the voltage stabilizing circuit and the anode of the thyristor.

[0034] Among them, the current limiting control circuit includes: a first bias resistor R1, a second bias resistor R2, a transistor VT and a current limiting resistor R3; one end of the first bias resistor R1 and one end of the current limiting resistor R3 are both electrically connected to the positive output end of the voltage stabilizing circuit 72, the other end of the first bias resistor R1 is connected in series with one end of the second bias resistor R2, the other end of the second bias resistor R2 is electrically connected to the other end of the voltage regulating resistor R4, the other end of the current limiting resistor R3 is electrically connected to the collector of the transistor VT, the base of the transistor VT is electrically connected to the connection point of the first bias resistor R1 and the second bias resistor R2, and the emitter of the transistor VT is electrically connected to the control electrode of the thyristor SCR.

[0035] The new energy motor performance detection device described in this application also includes a coupling, which is arranged between the detection rotor 2 and the shaft head of the new energy vehicle axle. It should be added that, based on the fact that most current cars have differentials, the wheels opposite to the wheels to be detected should be tightly held before application to ensure that the motor can transmit power to the detection rotor 2, wherein the wheels opposite to the wheels to be detected are co-centering with the wheels to be detected and located on both sides of the car.

[0036] The stator coil 32 includes: a plurality of silicon steel sheets and copper wires. The silicon steel sheets are plates whose shapes are adapted to the mounting slots. The plurality of silicon steel sheets are overlapped and then wrapped with copper wires. The outer side of the copper wires is provided with insulating paint. The positions of the two ends of the copper wires are adapted to the two wire slots 35. That is, when the stator coil 32 is placed in the mounting slots, the copper wires are connected to the wire slots 35.

[0037] As required, a plurality of stator coils 32 may be placed in the conductor slot 35 , and the copper wires of the stator coils 32 in the same conductor slot 35 are wound in the same direction.

[0038] One end of the mounting groove close to the outer side of the stator bracket 31 may be provided with an external thread, and the closed shell 34 may be a pipe fitting adapted to the mounting groove and provided with an internal thread, and the closed shell 34 may be screwed onto the mounting groove.

[0039] A screw is provided on the closed shell 34 , and the screw is a telescopic member. The length of the screw in the installation slot can be adjusted by turning the screw. The screw is used to press the multiple stator coils 32 to one end of the installation slot close to the inner side of the stator bracket 31 .

[0040] The commutator 33 can adopt IGBT, and there are at least two commutators 33. Each commutator 33 is electrically connected to half of the multiple mounting slots. The mounting slots electrically connected to the same commutator 33 are an mounting group. The multiple mounting slots in the two mounting groups are arranged at intervals. In this way, the magnetic poles on the inner side of the stator 3 can be detected and arranged in the sequence of "N pole", "S pole", "N pole", ... "S pole", "N pole", "S pole".

[0041] The detection rotor 2 may include a permanent magnet, and a plurality of permanent magnets are fixed to form a cylindrical structure. The magnetic poles on the outer side of the detection rotor 2 are arranged at intervals, for example, in the sequence of "N pole", "S pole", "N pole", ... "S pole", "N pole", "S pole".

[0042] By controlling the commutator 33 , the detection stator 3 can form a resistance to the detection rotor 2 , and by controlling the number of coils of the stator coil 32 , the size of the resistance can be controlled.

[0043] In the present application, the detection stator 3 forms a resistance to the detection rotor 2, which requires that when the detection rotor 2 is driven to rotate by the new energy vehicle, when the N pole of the detection rotor 2 approaches the next magnetic pole of the detection stator 3, the next magnetic pole of the detection stator 3 is transformed into the N pole. Similarly, when the S pole of the detection rotor 2 approaches the next magnetic pole of the detection stator 3, the next magnetic pole of the detection stator 3 is transformed into the S pole.

[0044] In the present application, a Hall magnetic sensor is arranged inside the stator bracket 31 , and the rotation speed or rotation angle of the rotor 2 can be detected by the Hall magnetic sensor, so as to facilitate the control of the commutator 33 .

[0045] In addition, in order to prevent the stator coil 32 from being burned due to excessive current when the detection rotor 2 holds the detection stator 3 tightly, the present application also includes a current limiting control circuit, and the working process of the current limiting control circuit is as follows: The bias resistor, the first resistor, and the second resistor of the current limiting control circuit are all greater than the voltage regulating resistor R4, that is, the current passing through the current limiting control circuit is much smaller than the current passing through the thyristor SCR. When the current passing through the thyristor SCR increases, the voltage drop of the voltage regulating resistor R4 increases, and the voltage at the connection point of the first bias resistor R1 and the second bias resistor R2 decreases accordingly, so that the triode VT is turned off, and the thyristor SCR is turned off without a maintaining current, which can avoid the situation where the stator coil 32 is burned due to excessive current.

[0046] When in use, the temperature sensor 5 and the leakage detection sensor 6 can be set on the motor housing, and the torque sensor 4 can be set between the coupling and the detection rotor 2. This application can conveniently and quickly detect the torque output of the motor, as well as the heating and insulation performance under long-term, high-torque conditions, so as to facilitate accurate evaluation of the motor performance of new energy vehicles that have been running for a period of time. Among them, the motor performance in this application refers to: the torque output of the motor, the degree of motor aging (the degree of motor aging is related to the heating and insulation of the motor), which can provide a relatively accurate evaluation for the subsequent trading of new energy vehicles.

[0047] On the other hand, the present invention also provides a new energy motor performance detection method, which is applicable to the above-mentioned new energy motor performance detection device. The new energy motor performance detection method comprises: S1. Use a lift to lift the new energy vehicle and remove the tires of the new energy vehicle.

[0048] S2. Fix the new energy motor performance detection device on one side of the new energy vehicle, and fix the detection rotor 2 and the shaft head of the wheel axle of the new energy vehicle.

[0049] S3, starting the new energy vehicle, so that the wheel axle of the new energy vehicle drives the detection rotor 2 to rotate.

[0050] S4, connect the detection stator 3 to the power supply, monitor the rotation angle of the detection rotor 2, and control the current direction in the multiple stator coils 32 of the detection stator 3 through the commutator 33, so that the detection stator 3 forms a magnetic field that hinders the rotation of the detection rotor 2.

[0051] S5. The torque sensor 4 is used to collect the external output torque of the wheel axle of the new energy vehicle, and the motor temperature and insulation of the new energy vehicle are collected at the same time.

[0052] In some embodiments, before step S5, the new energy motor performance detection method described in the present application also includes step S41.

[0053] S41 , adjusting the number of stator coils 32 in the detection stator 3 to control the intensity of the magnetic field of the detection stator 3 that hinders the rotation of the detection rotor 2 .

[0054] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0055] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A new energy motor performance detection device, characterized in that: include: A fixed bracket, wherein the fixed bracket is fixedly connected to the ground; A detection rotor, wherein both ends of the detection rotor are rotating shafts, the middle part of the detection rotor is a magnetic block, the detection rotor is movably arranged on the fixed bracket, and the detection rotor has a tendency to rotate around its center line; A detection stator, the detection stator is arranged on the fixed bracket, the detection stator is a tubular structure as a whole, and the detection rotor is arranged inside the detection stator; A torque sensor, wherein the torque sensor is fixed to one end of the rotating shaft of the detection rotor; A temperature sensor configured to obtain a temperature of a motor housing of a new energy vehicle; A leakage detection sensor, the leakage detection sensor is electrically connected to the motor housing, and the leakage detection sensor is configured to detect the insulation of the motor; Wherein, the detection stator comprises: The stator bracket is a tubular structure with two ends open as a whole, and a plurality of mounting grooves are arranged on the side wall of the stator bracket, and the plurality of mounting grooves are evenly arranged along the circumference of the side wall of the stator bracket; Stator coil, at least one stator coil is arranged in each mounting slot; a commutator, the plurality of stator coils being electrically connected to the commutator, the commutator being configured to control the direction of current in the stator coils; A Hall sensor is fixed on the stator bracket and is used to obtain and detect the position of the rotor.

2. The new energy motor performance detection device according to claim 1 is characterized in that: The detection rotor comprises a plurality of permanent magnets, the plurality of permanent magnets are evenly arranged around the center line of the rotating shaft of the detection rotor, and the N poles and S poles of the plurality of permanent magnets are arranged at intervals.

3. The new energy motor performance detection device according to claim 2 is characterized in that: The new energy motor performance detection device also includes a controller, which is electrically connected to the torque sensor, temperature sensor, leakage detection sensor, commutator and Hall sensor.

4. The new energy motor performance detection device according to claim 3 is characterized in that: A Hall sensor is arranged on the inner side wall of the stator bracket, and the Hall sensor comprises a Hall magnetic sensor.

5. The new energy motor performance detection device according to claim 4 is characterized in that: The installation groove is a pipe with two ends open, the inner wall of the installation groove is provided with two wire grooves, and an anti-slip ring is provided at one end of the installation groove close to the inner side of the stator bracket; The stator bracket also includes a closed shell, which is adapted to the structure of one end of the mounting slot close to the outer side of the stator bracket, and is buckled onto the wire slot. A telescopic member is provided on the closed shell, and the telescopic member is used to fix the stator coil.

6. The new energy motor performance detection device according to claim 5 is characterized in that: The two wire grooves in each mounting groove are electrically connected to the commutator, and the commutator includes a first output end and a second output end. One of the two wire grooves in the mounting groove is electrically connected to the first output end, and the other of the two wire grooves in the mounting groove is electrically connected to the second output end.

7. The new energy motor performance detection device according to claim 6 is characterized in that: There are at least two commutators, and the mounting slots are divided into a plurality of mounting groups. Each mounting group is electrically connected to a corresponding commutator, and the mounting slots in the plurality of mounting groups are arranged alternately.

8. The new energy motor performance detection device according to claim 7 is characterized in that: The new energy motor performance detection device also includes a control circuit, and the control circuit includes: A rectifier circuit, the rectifier circuit is electrically connected to the mains; A voltage stabilizing circuit, the voltage stabilizing circuit being electrically connected to the rectifier circuit; A thyristor, wherein an anode of the thyristor is electrically connected to the positive output terminal of the voltage stabilizing circuit, and a cathode of the thyristor is electrically connected to the commutator; A current limiting control circuit, one end of which is electrically connected to the positive output end of the voltage stabilizing circuit, and the other end of which is electrically connected to the control electrode of the thyristor; A voltage regulating resistor, which is arranged between the positive output terminal of the voltage stabilizing circuit and the anode of the thyristor; Wherein, the current limiting control circuit includes: a first bias resistor, a second bias resistor, a transistor and a current limiting resistor; one end of the first bias resistor and one end of the current limiting resistor are both electrically connected to the positive output end of the voltage stabilizing circuit, the other end of the first bias resistor is connected in series with one end of the second bias resistor, the other end of the second bias resistor is electrically connected to the other end of the voltage regulating resistor, the other end of the current limiting resistor is electrically connected to the collector of the transistor, the base of the transistor is electrically connected to the connection point of the first bias resistor and the second bias resistor, and the emitter of the transistor is electrically connected to the control electrode of the thyristor.

9. A new energy motor performance detection method, applicable to the new energy motor performance detection device described in claims 1 to 8, characterized in that: The new energy motor performance detection method includes: Use a lift to lift the new energy vehicle and remove the tires of the new energy vehicle; The new energy motor performance detection device is fixed on one side of the new energy vehicle, and the detection rotor is fixedly connected to the shaft head of the wheel axle of the new energy vehicle; Start the new energy vehicle, so that the wheel axle of the new energy vehicle drives the detection rotor to rotate; The detection stator is connected to the power supply, the rotation angle of the detection rotor is monitored, and the current direction in the multiple stator coils of the detection stator is controlled through the commutator, so that the detection stator forms a magnetic field that hinders the rotation of the detection rotor; The torque sensor is used to collect the torque output by the wheel axle of the new energy vehicle, and at the same time collects the motor temperature and insulation of the new energy vehicle.

10. The new energy motor performance detection method according to claim 9 is characterized in that: Adjusting the number of stator coils in the detection stator controls the strength of the magnetic field of the detection stator that hinders the rotation of the detection rotor.

Images