KR20180092714A - Apparatus and method for testing integrated feature of dc-relay - Google Patents

Abstract

The present invention relates to an apparatus for testing an integrated feature of a DC-relay and a method thereof, for testing the basic performance of an electric vehicle that generates power using a battery. The apparatus for testing an integrated feature of a DC-relay includes: a relay unit including at least one DC-relay; a relay controller for controlling on/off time of each DC-relay of the relay unit; first and second power supply units for supplying first and second power sources to the relay unit; an integrated measurement unit for integrally testing the performance of the at least one DC-relay provided in the relay unit; and a system controller for controlling a preconditioning operation of the integrated test and recording and analyzing integrated test data measured in the integrated measurement unit to determine the performance of the DC-relay. Accordingly, the present invention can save test facility costs and shorten a test time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a DC-

The present invention relates to a DC-relay integrated characteristic testing apparatus and method for testing basic performance of an electric vehicle that generates power using a battery.

BACKGROUND ART [0002] Generally, an electric vehicle includes a battery for supplying operating power for running and a motor driven by electric energy supplied from the battery. A power relay assembly (PRA) and an inverter are provided between the battery and the motor.

The power relay assembly stably supplies or blocks battery power to a driving device such as a motor. The power relay assembly includes at least one power relay (DC-relay, hereinafter referred to as " DC-relay ") that is controlled to be opened or closed to a closed position for supplying a DC voltage provided from a battery or a disconnected position according to a control signal of a battery control module Quot;). The DC-relay includes a coil magnetizing or demagnetizing according to a control signal of the battery control module, and an open / close contact opened when the coil is energized when the coil is energized and opened when the coil is energized.

The DC-relay basically performs seven basic performance tests, which are essential items before and after the main test. The basic performance items include operating voltage / open voltage, operation time / open time, contact resistance, power consumption, voltage drop, power supply lead and bounce measurement, and the test equipment required for each item measurement is an oscilloscope, A power supply, a contact resistance meter, a malfunction detector, a digital power meter, an overcurrent test device, and a multimeter.

Therefore, the tester performs the performance test separately for all 7 basic performance items by selecting the items to be tested, arranging the equipment and samples to fit the selected items, and then applying power. In this case, considering the equipment replacement time, the DC-relay replacement time to be tested, and the power setting time, it takes about 1500 sec for three DC-relay tests

However, the basic performance of the conventional DC-relay is performed by using individual test equipment for each test item, and each test equipment has a problem that only one test item and one DC-relay can be tested. Therefore, as the number of models / test items / samples increases suddenly due to the recent increase in the sales of electric vehicles, the increase in the test capacity may lead to the delay of the test time or the test schedule due to the shortage of the test personnel.

In the past, when testing the basic performance of a DC-relay, each test data is written in a handwritten form, and then transferred to the test report. In this process, a test data error may occur.

Accordingly, it is an object of the present invention to provide an apparatus and method for testing the integrated characteristics of a DC-relay capable of testing the overall basic performance items of a DC-relay through a single automated test.

It is another object of the present invention to provide a DC-relay integrated characteristic testing apparatus and method which can test more DC relays through a single automated test.

According to an aspect of the present invention, there is provided an apparatus for testing a DC-relay integration characteristic, including: a relay unit having at least one DC-relay; A relay controller for controlling on / off times of each DC-relay of the relay unit; First and second power supply units for supplying first and second power sources to the relay unit; An integrated measurer for testing integration performance of at least one DC-relay provided in the relay unit; And a system controller for controlling the overall operation of the integrated performance test and recording and analyzing test data measured by the integrated measuring device to determine the performance of the DC-relay.

According to an embodiment of the present invention, the relay section includes at least one DC-relay, and the at least one DC-relay may have a separate or modular form.

According to an embodiment of the present invention, the relay unit may be seated in a receiving portion that is stretched / contracted according to the number of DC-relays.

According to the embodiment of the present invention, the relay controller is connected to the system controller, and controls the ON / OFF time of the relay contact point by controlling the first power source applied to the relay unit under the control of the system controller for each test item Can be generated.

According to an exemplary embodiment of the present invention, the integrated measuring instrument may be implemented as an integrated instrument incorporating an oscilloscope and an analyzer function, and the integrated performance of the DC-relay may include an operating voltage / Resistance, power consumption, voltage drop, power supply and contact bounce.

According to an embodiment of the present invention, the integrated measuring instrument is connected to the system controller, measures the integrated performance of the DC-relay according to the control of the system controller corresponding to each measurement item, and transmits the measured test data to the system controller have.

In order to accomplish the above object, a method of testing an integrated characteristic of a DC-relay according to an embodiment of the present invention is characterized in that when a DC-relay is mounted, a first voltage corresponding to a test item is set and applied to a coil of a DC- step; Relaying the first voltage applied to the coil of the DC-relay for each test item to generate an operating voltage; Applying a current to the main contact of the DC-relay; And measuring the voltage across both ends of the main contact due to the current when the main contact of the DC-relay is turned on / off to the operating voltage to automatically measure the integrated performance of the DC-relay.

According to an embodiment of the present invention, the integration performance of the DC-relay may include at least two of an operation voltage / open voltage, an operation time / open time, a contact resistance, a power consumption, a voltage drop, a power supply line and a contact bounce .

According to the embodiment as described above, the present invention can provide a DC-relay integrated characteristic testing device capable of integrally performing the basic performance test of the DC-relay, (The life of the relay is diagnosed and malfunctions) can be greatly shortened.

In addition, the present invention provides a DC-relay integrated characteristic testing device that can automatically perform the basic performance test of the DC-relay, so that it is possible to perform all the basic performance items with only one tester, It has the effect of ensuring the accuracy of test data measurement through communication (USB, ES-232) control and improving test consistency and preventing data error through quick analysis and display / saving of analysis result.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an apparatus for testing the integrated characteristics of a DC-relay according to an embodiment of the present invention; FIG.
FIG. 2 is a flowchart showing an operation of an apparatus for testing the integrated characteristics of a DC-relay according to an embodiment of the present invention. FIG.
FIGS. 3 to 5 are waveforms of voltages measured at the coil and main contact of the DC-relay during the integrated performance test. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Whenever a component is referred to as "including" an element herein, it is to be understood that it may include other elements, unless the context otherwise requires.

Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have. It is also to be understood that the articles "a", "an", "an" and "the" Can be used.

The present invention can construct a system capable of testing at least two of the seven basic capabilities of a DC-relay at one time, so that it can be tested by one person, and simultaneous testing of a plurality of DC-relays is possible And the like.

1 is a configuration diagram of an apparatus for testing the integrated characteristics of a DC-relay according to an embodiment of the present invention.

1, an apparatus for testing the integrated characteristics of a C-relay according to an embodiment of the present invention includes a system controller 100 for controlling a preliminary test operation, a relay unit 110 composed of at least one DC-relay, A relay controller 120 for controlling on / off time of each DC-relay in the relay unit, first and second power supply units 130 and 140 for supplying first and second power for the performance test of the DC- And an integrator 150 for integrally measuring the test data at the time of performing the basic performance of the DC-relay.

The system controller 100 stores a check program having a sequence and conditions set in relation to the seven basic capabilities of the DC-relay and can store performance data of the DC-relay measured through the integrator 150 . The system controller 100 is a device having a display unit, and can be implemented by a PC, for example.

The relay unit 110 includes at least one DC-relay (e.g., 10) to be tested, and each relay may be connected in series with each other. The plurality of DC-relays may be formed of one module and are formed so that they can be detached. For example, the relay unit 110 may be equipped with a first module composed of three DC-relays or a second module composed of 10 DC-relays. In this case, the relay unit 110 is seated in a receiving portion (not shown) that is expanded / contracted according to the number of received DC relays, and is increased in accordance with the size of the second module when the second module is inserted.

The relay controller 120 is connected to the system controller 100 via a USB interface and controls the first power source (DC power source) applied to the relay unit 110 under the control of the system controller 100, The on / off time of the relay contact can be controlled.

The first and second power supply units 130 and 140 are programmable power supplies and are connected to the system controller 100 through a serial communication (RS-232 communication) And supplies power related to each test item (or mode) in accordance with the power supply control signal of the test apparatus. The first power supply unit 130 is a voltage source for supplying the first power (DC power) to the coils 10 of each DC-relay and the second power supply unit 140 is connected to the DC- 2 is a current source that supplies power (AC power).

The integrated measurer 150 is an integrated instrument including an oscilloscope and an analyzer function. The integrated measuring instrument 150 is connected to the system controller 100 through a USB interface and measures the integrated performance of the DC-relay according to the control of the system controller 100 corresponding to each measurement item, Data is transferred to the system controller 100 through the USB communication, so that the system controller 100 can analyze, record, and display the results of the integrated test data.

The integrated performance of the DC-relay may include at least two of operating voltage / open-circuit voltage, operating time / open time, contact resistance, power consumption, voltage drop, power supply line and contact bounce.

The operation of the DC-relay integration testing apparatus according to the embodiment of the present invention will now be described with reference to the accompanying drawings.

2 is a flowchart showing the operation of the DC-relay integration characteristic testing apparatus according to the embodiment of the present invention.

Referring to FIGS. 1 and 2, a tester can attach a DC-relay or a DC-relay module, which is a test sample, to the relay unit 110 (S100). When the test sample is mounted, a detection unit (not shown) outputs a detection signal indicating whether the sample is mounted to the system controller 100, and the system controller 100 displays a program for relay integration test on a display unit (not shown) . In the menu item of the displayed program, the examiner selects the "integrated test menu" which performs the integration test for the seven basic items of the DC-relay, or selects the "selected test menu" You can choose. For convenience of explanation, the present invention will be described by taking as an example the case where the integrated test menu is selected.

When the integrated test menu and the number of times of measurement are selected, the system controller 100 controls the first and second power supply units 130 and 140 through the RS-232 communication based on the sequence of the basic items, The relay controller 120 and the integrated measuring device 150 are controlled to start the integrated performance measurement (S110).

Accordingly, the integrated measuring device 150 performs the DC-relay integrated performance (characteristics) (7 basic performance) tests corresponding to the sequence control of the system controller 100 through the USB communication (S120). The integrated performance performed by the integrated measuring device 150 is as follows.

3 to 5 are waveform diagrams of the voltage measured at the coil and main contact of the DC-relay during the integrated performance test.

1. DC-relay operation / open-circuit voltage measurement

The operation / open-circuit voltage measurement of the DC-relay can be performed according to the test sequence. When the operation / open-circuit voltage of the DC-relay is measured, the system controller 100 controls the first power supply unit 130 to increase or decrease the rated voltage in units of 1 mV. The relay controller 120 controls the on / off time of the main contact 1 of the DC-relay according to the control of the system controller 100 through the USB communication, A voltage is applied to the coil 10.

When the rated voltage is applied, the coil 10 of the relay unit 110 is magnetized. When the coil is energized, the main contact 11 is closed by the magnetic force. When the main contact 11 is closed, the second power supply 140 outputs a current to the closed main contact 11 under the control of the system controller 100, The voltage across both ends of the main contact 11 can be measured as shown in Fig.

2. DC-relay operation / opening time measurement

The operation / open time of the DC-relay can be performed together with the DC / relay operation / open-circuit voltage measurement. 3 (A) is applied to the coil 10 and the voltage waveform as shown in Fig. 3 (B) is measured at both ends of the main contact 11 (measured in 10 microseconds) The time between the rising edge of the measured voltage waveform at the rising edge of the applied voltage waveform (the time at which the main contact is attached) is the "operating time ", and the measurement (at the falling edge of the applied voltage waveform) The time between falling edges of the applied voltage waveform (the time at which the main contact drops) is measured as "open time ". At this time, the operation time and the opening time are regarded as including a chattering time at which the contact point is dropped for a short time.

3. DC-relay contact bounce measurement

The first power supply unit 130 outputs the rated voltage as shown in FIG. 4A under the control of the system controller 100 and the relay controller 120 controls the rated voltage according to the control of the system controller 100 Thereby forming a contact bounce as shown in Fig. 4 (B) during the bounce time. At this time, the integrator 150 measures the voltage across the main contact 11 during the bounce time.

4. Contact resistance, voltage drop and power consumption measurement

Meanwhile, when measuring the operation / open-circuit voltage of the DC-relay, that is, when the second power supply 140 outputs the current to the main contact 11 while the main contact 11 is closed, The integrated measuring device 150 can measure the voltage drop after measuring the voltage across the main contact 11 and measure the contact resistance based on the measured voltage and the current applied to the main contact 11 have.

In addition, the integrated measuring device 150 can measure the power consumption of each DC-relay by multiplying the rated voltage (set voltage) output by the first power supply 130 by the current applied to the main contact 11 have.

5. Power Calculation

The first power supply unit 130 outputs a rated voltage under the control of the system controller 100 and the relay controller 120 generates a power supply line as shown in FIG. 5 according to the control of the system controller 100 And applies a starter voltage to the coil 10 of the relay unit 110. Thus, the integrator 150 measures the voltage across the main contact 11 during the power supply time.

If all of the integrated functions (seven functions) of the DC-relay are measured through the above operation, it is repeatedly tested as many times as the number of times set by the user (S130) Transmits the integrated test data measured through the USB communication to the system controller 100 (S150).

Accordingly, the system controller 100 compares and analyzes the integrated test data transmitted from the integrator 150 with the previously stored mood data, determines the failure / goodness of each DC-relay, and displays the analysis result on the display unit Record it in the test report together and save it. In the present invention, when the basic performance is performed on three DC-relays (samples), the test time which conventionally takes about 1500 seconds can be reduced to about 150 seconds.

As described above, the present invention provides a DC-relay integrated characteristic testing device capable of integrally performing the basic performance tests of DC-relays, thereby saving capital investment costs compared with individual equipment configurations, The time required for the test of the relay (diagnosis of the life of the relay and malfunction of the relay) can be remarkably shortened.

In addition, the present invention provides a DC-relay integrated characteristic testing device capable of automatically performing the basic performance test of the DC-relay, so that it is possible to perform all the basic performance items with only one tester, It has the advantage of improving test consistency and preventing data errors by analyzing measurement data by performing measurement at the correct time through communication (USB, ES-232) control and displaying / storing the result.

The DC-relay integrated characteristics testing apparatus and method according to the present invention described above can be applied to a configuration and a method of the embodiments described above in a limited manner, It will be understood that the invention may be embodied in other specific forms without departing from the spirit or scope of the invention. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive.

100: System controller 110: Relay unit
120: relay controller 130, 140: first and second power supply units
150: Integrated measuring instrument

Claims (9)

A relay unit having at least one DC-relay;
A relay controller for controlling on / off times of each DC-relay of the relay unit;
First and second power supply units for supplying first and second power sources to the relay unit;
An integrated measurer for testing integration performance of at least one DC-relay provided in the relay unit; And
And a system controller for controlling the total operation of the integration test and recording and analyzing test data measured by the integrator to determine the performance of the DC-relay. The apparatus of claim 1, wherein the relay unit
Relay comprising at least one DC-relay, said at least one DC-relay having a separate or modular form. The apparatus of claim 1, wherein the relay unit
And is seated in a receiving portion which is tensioned / contracted according to the number of DC relays to be tested. The apparatus of claim 1, wherein the relay controller
And a control unit connected to the system controller to generate an operating voltage for controlling the on / off time of the relay contact by controlling the first power source applied to the relay unit according to the control of the system controller for each test item. Integrated characteristics testing equipment. The plasma display apparatus of claim 1, wherein the first power supply unit
And the integrated performance of the DC-relay includes at least two of an operation voltage / open-circuit voltage, an operation time / opening time, a contact resistance, a power consumption, a voltage drop, a power supply line and a contact bounce Wherein the DC-relay is connected to the relay. 2. The apparatus of claim 1,
An integrated characteristic testing device for a DC-relay, characterized in that it is an integrated instrument incorporating an oscilloscope and an analyzer function. 2. The apparatus of claim 1,
Relay control unit, connected to the system controller, measures the integrated performance of the DC-relay according to the control of the system controller corresponding to each measurement item, and transmits the measured test data to the system controller. Device. Setting a first voltage corresponding to the test item when the DC-relay is installed, and applying the first voltage to the coil of the DC-relay;
Relaying the first voltage applied to the coil of the DC-relay for each test item to generate an operating voltage;
Applying a current to the main contact of the DC-relay; And
And measuring the voltage across both ends of the main contact due to the current when the main contact of the DC-relay is turned on / off to the operating voltage to automatically measure the integrated performance of the DC-relay. - Integration characteristics test method of relays. 9. The method of claim 8, wherein the integrated performance of the DC-
Wherein at least two of the operating voltage / open-circuit voltage, the operation time / open time, the contact resistance, the power consumption, the voltage drop, the power supply line and the contact bounce are included.

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