KR101389388B1 - A connector type of device for measuring preference of motor in a hybrid vehicle and method for measuring resistances thereof - Google Patents

Abstract

The present invention relates to a method and an apparatus for measuring motor performance in a connector type hybrid vehicle and, more specifically, to a method and an apparatus for measuring motor performance to measure wire wound resistance, insulation resistance, and sensor resistance in a motor by connecting to a connecting terminal of a hybrid motor with a connector method. A motor performance measurement apparatus comprises a motor connecting terminal (11) connected to a power connector (111) which is connected to a three-phase power port (211) of a motor; a sensor signal terminal (12) in which a sensor connector (121) can be connected to a sensor port (221) of the motor (20); a ground terminal (13) connected to a ground port (231) connected to a body of the motor (20); a relay module (22) connected to a motor connecting terminal (11), the sensor terminal (12), and the ground terminal (13); a function selection switch for converting a connecting state of a relay module (22) according to the selection of a measurement target; and a circuit board in which multiple resistance measurement modules (23a, 23b, 23c) are arranged and are selected as the measurement target according to the connection of the relay module (22). The power connector (111) and the sensor terminal (12) have a male and female insertion combination structure.

Description

TECHNICAL FIELD [0001] The present invention relates to a connector type hybrid vehicle, and more particularly, to a connector type hybrid vehicle,

The present invention relates to a motor performance checker and a motor performance inspection method for a hybrid vehicle of a connector type, and more specifically to a connection terminal of a hybrid motor in a connector manner to measure a winding resistance, an insulation resistance and a sensor resistance of the motor And a method of inspecting motor performance.

A hybrid vehicle refers to a vehicle having two or more distinct power supplies, and a hybrid electric vehicle refers to a vehicle that uses an internal combustion engine and one or more electric motors as a power source. In the hybrid electric vehicle, the electric energy stored in the battery is converted to AC via the inverter to drive the motor. A motor applied to a hybrid electric vehicle is driven when the vehicle is accelerated to increase the driving force of the vehicle, and when the motor decelerates, the motor is operated as a generator to convert kinetic energy into electric energy to charge the battery. On the other hand, when the vehicle is stopped, the engine is stopped to prevent unnecessary fuel consumption and can be used as a drive motor when restarted.

The motor assembly to be applied to the hybrid electric vehicle may generally consist of an engine, a motor position sensor, a ring gear, a motor rotor, a motor stator, a damper plate and a continuously variable transmission. The motor assembly thus constructed has a resistance test (U, V, W phase) and a withstand voltage (U, V, W phase) including a line resistance (UW, VW, WU), a temperature sensor resistance and a resolver resistance ) May be checked by insulation inspection to inspect the insulation. Each resistance shall be measured by the corresponding equipment.

As a prior art related to the measurement of the resistance of a motor, Patent Publication No. 2001-0099281 entitled " Device for measuring insulation resistance of a motor ". The prior art discloses an insulation resistance measuring apparatus for a motor including an AC oscillating circuit, a voltage distributing circuit, a rectifying circuit, an amplifying circuit, an A / D converting unit and a control unit.

Another prior art related to measuring the resistance of a motor is disclosed in Korean Patent Publication No. 2012-0028429 entitled " 3-phase inverter output current detector using motor winding resistance ". The prior art includes a motor winding resistor having a differential amplifier receiving a voltage across a motor winding resistor through which a phase current flows, and a buffer amplifier for applying a reference voltage to a non-inverting terminal of the differential amplifier. Phase inverter output current detection apparatus.

In the inspection process of the motor of the hybrid electric vehicle, the tester or the resistance and current measuring device of the motor are used for each of the inspectors for the respective resistors. On the other hand, the measurement of the resistance or the current is made by a method such as using a device such as a probe to contact a specific position of the motor. The tester of this type has a problem in that a plurality of measuring apparatuses must be prepared and the measured value may vary depending on the contact pressure or the contact area between the object to be measured and the probe.

The present invention has been made to solve the problems of the prior art and has the following purpose.

An object of the present invention is to provide a connector-type hybrid vehicle motor performance tester capable of measuring a plurality of resistors in one tester and measuring accuracy of each of the resistors in a connector manner, .

Another object of the present invention is to provide a method of inspecting the motor performance so that a plurality of resistors can be simultaneously measured and accuracy and uniformity of measurement can be ensured.

According to a preferred embodiment of the present invention, the motor performance tester comprises a motor connection terminal connected to a power supply connector connectable to a three-phase power port of the motor; A sensor signal terminal to which a sensor connector connectable to a sensor port of the motor is connected; A ground terminal connected to a grounding port connected to the motor body; A relay module connected to a motor connection terminal, a sensor terminal and a ground terminal; A function selection switch for switching the connection state of the relay module according to the selection of the measurement object; And a circuit board on which a plurality of resistance measurement modules are arranged, the resistance measurement module being connected to the relay module, wherein the power connector and the sensor terminal have a male and female inserting structure.

According to another preferred embodiment of the present invention, the plurality of resistance measuring modules are an insulation resistance measuring module, a low resistance measuring module and a resistance measuring module.

According to another preferred embodiment of the present invention, a method of testing the motor performance of a hybrid vehicle

Receiving respective signals from the three-phase power port of the motor, the sensor port, and the motor chassis; Transmitting a corresponding signal to a plurality of resistance measurement modules installed on a circuit board through a relay module; Receiving temperature-compensated signals from a plurality of resistance measurement modules; And displaying the temperature compensated measured values in a predetermined order, wherein the connection to the three-phase power port and the sensor port is of a connector type.

The tester according to the present invention can measure the various resistances of the motor in one apparatus, thereby ensuring the speed and convenience of the motor inspection work and reducing the manufacturing cost of the tester. Further, the tester according to the present invention has an advantage that accuracy and reliability of measurement can be improved by being connected to a terminal of a motor by a connector method.

1 shows an embodiment of a connection structure between a tester according to the present invention and a motor of a hybrid electric vehicle.
2 is a block diagram showing an embodiment of the structure of a tester according to the present invention.
Fig. 3 is a flowchart showing an embodiment of the measurement method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of a connection structure between a tester according to the present invention and a motor of a hybrid electric vehicle.

Referring to FIG. 1, a motor performance tester 10 according to the present invention includes a motor connection terminal 11 connected to a power supply connector 111 which can be connected to a three-phase power supply port 211 of a motor 20; A sensor signal terminal 12 to which a sensor connector 121 connectable to the sensor port 221 of the motor 20 is connected; A ground terminal 13 connected to a ground port 231 connected to the body of the motor 20; A relay module 22 connected to the motor connection terminal 11, the sensor terminal 12 and the ground terminal 13 which can be connected to the main body of the motor 20; A function selection switch for switching the connection state of the relay module 22 according to the selection of the measurement object; And a plurality of resistance measurement modules (23a, 23b, 23c) for selecting measurement objects according to the connection of the relay module (22). The power connector (111) and the sensor terminal (12) Insertion-coupling structure.

The motor 20 may be any motor 20 used in a hybrid vehicle and may be any motor known in the art such as, for example, a magnet motor or an induction motor The present invention is not limited by the structure or kind of the motor. The motor 20 may consist of a rotor 21, a stator F and a motor housing or chassis. A three-phase power supply port 211 in which power cable terminals U, V, and W are disposed may be installed in the motor housing. And a sensor port 221 such as a resolver sensor connector or a temperature sensor connector may be installed. On the other hand, a suitable grounding port 231 may be formed in the housing or chassis. In this specification, the grounding port 231 may be any part, such as an outer assembly for fixing the motor housing or the stator F. [ The grounding port 231 is electrically connected to an external conductor having a sufficiently large capacitance such as a ground or vehicle frame that is electrically insulated from the rotor 21 or the stator F, . In this way, the grounding port 231 does not mean a specific portion provided on the motor 20 but can be an arbitrary portion that can be grounded.

The relay module 22 functions to selectively connect between the motor terminal 11, the sensor terminal 12 and the ground terminal 13 according to the input of the user, for example, an analog switch or a field effect transistor May be replaced by the same, but are not limited to, any selection switch known in the art.

1, a tester 10 according to the present invention includes a motor connection terminal 11, a sensor terminal 12, and a motor connection terminal 14 that can be connected to a power port 211, a sensor port 221, and a grounding port 231, respectively. And a ground terminal (13). The motor connection terminal 11, the sensor terminal 12 and the ground terminal 13 may be electrically connected to the power port 211, the sensor terminal 12 and the ground terminal 13, respectively. Electrical connection in this specification means that a current for measurement can be made to flow from the tester 10 to the motor connection terminal 11, the sensor terminal 12 and the ground terminal 13 by an appropriate control device do. In other words, the motor connection terminal 11, the sensor terminal 12 and the ground terminal 12 can be connected independently or together to form a part of the measuring circuit formed inside the tester 10, Which means that current flow can be controlled to be possible.

The power port 211 may be formed of three electrodes U, V, and W, and the sensor port 221 may be formed of a plurality of pins or a plurality of terminals. The motor connection terminal 11 or the sensor terminal 12 may have an electrode or pin corresponding to the power port 211 or the sensor port 221 in order to measure the resistance of the motor 20.

The power supply port 211, the sensor port 221 and the ground port 231 are connected to the motor connection terminal 11, the sensor terminal 12 and the grounding port 23 by the power supply connector 111, the sensor connector 121 and the grounding probe 131, May be electrically connected to the ground terminal (13). The motor connection terminal 11, the sensor terminal 12 and the ground terminal 13 are connected to a motor terminal jack formed at one end of the power cable extending from the power connector 111, the ground connector 121 and the grounding probe 131, And can be detachably coupled to the terminal jack and the ground terminal jack. As described above, the motor terminal jack or the sensor terminal jack may have a terminal or a pin corresponding to the terminal or the pin formed in the power port 211 or the sensor port 221. [

The power connector 111, the ground connector 121 and the grounding probe 131 may have a suitable structure capable of being electrically coupled to the power port 211, the sensor port 221 and the ground port 231, respectively.

According to the present invention, the power supply connector 111 or the sensor connector 121 can be coupled to the power port 211 or the sensor port 221 in a connector-type or male-female inserting structure. The connector type or male and female inserting structure is a structure in which a plate or a pin-shaped protrusion is formed in one device and a groove in which the protrusion can be received is formed in the other device so that the protrusion is inserted into the groove . Such a connector-type or male-female inserting structure makes it possible to increase the accuracy and reliability of measurement. The grounding port 231 can be coupled with the grounding probe 131 in the same way but substantially no such structure is formed in the motor 20 and the grounding probe 131 is connected to various parts of the motor 10 So it is difficult to combine them.

The inspecting apparatus 10 according to the present invention is constructed so that the power port 211 or the sensor port 221 is connected to the power connector 111 or the sensor connector 121 in a connector or male and female connector structure, And the motor connection terminal 11 and the sensor terminal 12 are connected to the power port 211 or the sensor port 221 again. In addition, since the connection structure can improve the measurement accuracy and the measurement reliability, it is possible to secure the convenience and promptness of the motor performance predicting operation.

The motor performance tester 10 may have a structure similar to a general tester, for example, except that it can have a box-shaped housing and can measure a connection structure and a plurality of resistors at the same time. For example, the motor performance tester 10 may have input means, a display, a switch, a fuse or a circuit board, and may have a control device such as a circuit, relay or microprocessor for measuring the respective resistance on the circuit board .

This is explained in detail below.

2 is a block diagram showing an embodiment of the structure of a tester according to the present invention.

2, the motor performance tester includes a measurement terminal connector 21, a measurement terminal connector 21 and a resistance measurement module 23a, 23b, 23c, 25b such as a switch 25a or a touch screen 25b, input modules 25a, 25b or motor resistance measurement modules 23a, 23b A digital module 24 for converting the values of the digital modules 24 and 23c into digital form, a display 26 made of a material such as an LCD for displaying the value of the digital module 24, And a power supply module 27. For example, a DC-DC boost module 27a for boosting the voltage of the power supply module 27 when a high voltage is required in the resistance measurement process. The relay module 22, the motor resistance measurement modules 23a, 23b, and 23c, and the digital module 24 may be mounted on one circuit board and the circuit board may be a control device You can have a microprocessor.

The motor resistance measurement modules 23a, 23b, and 23c may include, for example, an insulation resistance measurement module 23a, a low-resistance measurement module 23b, or a resistance measurement module 23c. Insulation resistance is, for example, a resistance between three phases (U, V, W) motor chassis or motor housing or a resistance between three phases, for example a resistance of 10 MΩ or more. A low-resistance means a resistance of 300 m? Or less, for example, a line resistance (U-V, V-W, W-U) or a winding resistance. And the resistance measurement module 23c means a module for measuring other resistance such as a position sensor resistance such as a resolver between 1 and 1000 Ω or a temperature sensor of 100 to 1000 kΩ. Each resistor may be measured, for example, by a circuit structure applied to a circuit tester, a millimeter tester, a multimeter or an internal-voltage generator. In addition, the tester according to the present invention may have a temperature sensor for temperature compensation of the measured values.

The module for each resistance measurement can be placed on the circuit board in chip form and can be selectively connected to the corresponding terminal of the measurement terminal connector 21 by the relay module 22. Specifically, when a measurement function is inputted by various input means such as a switch 25a such as a rotary switch or a touch screen 25b, the control device provided on the circuit board operates the relay module 22 to measure the corresponding motor resistance And connects the modules 23a, 23b, and 23c with the corresponding specific terminal connector 21. Then, the control device displays the measurement object through the digital module 24 and operates the power supply module 27 to allow a current for measurement to flow. Accordingly, when the resistance is measured in the corresponding motor resistance specifying modules 23a, 23b, and 23c, the controller can display the measured values through the display 26. [

The tester according to the invention may comprise various measuring modules and may have suitable measuring circuits for measuring the respective resistances. The present invention is not limited by a measurement module or a measurement circuit.

A measuring method by a tester according to the present invention will be described below.

Fig. 3 is a flowchart showing an embodiment of the measurement method according to the present invention.

Referring to FIG. 3, in order to measure the resistance of the motor by the tester according to the present invention, the system may be initialized (S31). Then, it is possible to select whether to automatically perform temperature correction (S32). The temperature correction is intended to reflect a change in the resistance value depending on the temperature of the material of the object to be measured, for example, and the method of temperature correction can be preliminarily embedded in the control device in a program form. If the automatic temperature correction is selected (NO), the temperature correction method may be set separately or may be set to indicate the measured value in a state in which the temperature correction is not performed (S311). If the winding resistance is measured, the winding resistance is corrected (S321) due to the low measurement value (S321), and the report may be output (S323). Correction of the winding resistance can be done when the measured value has a large difference compared to the normal value. Since the winding resistance itself is very low, it may show a large error depending on the measurement conditions. Therefore, if unexpected measurement results are generated during the measurement process, winding resistance compensation may be performed. Winding resistance compensation can be done by detecting the measurement condition and finding the cause of the error and adding or subtracting the value accordingly. For example, the winding resistance correction is made in advance of the cause of the error and the correction can be made based on the data. The output of the report can be used, for example, a device such as a display. On the other hand, when the sensor resistor S331 or the insulation resistor S341 is measured, it can be outputted without any correction (S332, S342).

The tester according to the present invention can automatically display the relevant resistance continuously measured or, if necessary, a specific resistance can be measured. The continuous measurement mode and the specific resistance measurement mode can be selected by the input means (S33). If it is not set to automatic mode (NO), each resistor can be measured according to the method described above. On the other hand, if the automatic mode is set (YES), the winding resistance is corrected first (S35) and the winding resistance S35, the sensor resistance S36 and the insulation resistance S37 can be measured in order. Then, each measured value can be output (S38).

The measuring method shown in Fig. 3 is an illustrative example and the resistance of the motor can be measured by a tester according to the present invention in various ways.

The tester according to the present invention enables various resistances of a motor to be measured in one apparatus, so that convenience and speed of use can be ensured, and the manufacturing cost of the tester can be reduced. Further, the tester according to the present invention has an advantage that accuracy and reliability of measurement can be improved by being connected to a terminal of a motor by a connector method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: Motor performance checker 11: Connection terminal
12: Sensor signal terminal 13: Ground terminal
20: motor 22: relay module
23a, 23b, 23c: resistance measurement module 24: digital module
26: Display module 27: Power supply module
111: Connector 121: Sensor connector
131: Grounding probe 211: Three-phase power port
221: Sensor port 231: Ground port

Claims (3)

A motor connection terminal 11 connected to a power supply connector 111 which can be connected to the three-phase power supply port 211 of the motor 20;
A sensor signal terminal 12 to which a sensor connector 121 connectable to the sensor port 221 of the motor 20 is connected;
A ground terminal 13 connected to a ground port 231 connected to the body of the motor 20;
A relay module 22 connected to the motor connection terminal 11, the sensor terminal 12 and the ground terminal 13;
A function selection switch for switching the connection state of the relay module 22 according to the selection of the measurement object; And
And a circuit board on which a plurality of resistance measurement modules (23a, 23b, 23c) for selecting measurement objects are arranged according to the connection of the relay module (22)
The power connector 111 and the sensor terminal 12 have a male and female inserting structure and the sensor port 221 is a resolver sensor connector or a photo sensor connector and a plurality of resistance measuring modules 23a, Wherein the winding resistance comprises a winding resistance and the winding resistance is corrected according to the measured value. The hybrid method according to claim 1, wherein the plurality of resistance measurement modules (23a, 23b, 23c) are an insulation resistance measurement module (23a), a low resistance measurement module (23b), and a resistance measurement module Automotive motor performance checker. A method for inspecting a motor performance of a hybrid vehicle,
Receiving respective signals from the three-phase power port of the motor, the sensor port, and the motor chassis;
Transmitting a corresponding signal to a plurality of resistance measurement modules installed on a circuit board through a relay module;
Receiving temperature-compensated signals from a plurality of resistance measurement modules; And
And displaying the temperature compensated measured values in a predetermined order,
The connection to the three-phase power port and the sensor port is of a connector type. In the signal transmitted to the plurality of resistance measurement modules, if the winding resistance has a large difference from the general value, the winding resistance is corrected. And the change of the resistance value according to the temperature is reflected in the final measurement value.

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