KR102680324B1 - Apparatus and method for evaluating electrical characteristics of automotive generators - Google Patents

Abstract

An apparatus for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention includes a circuit component for checking current and voltage according to generator operation; A measuring unit that measures a voltage waveform according to each resistive load in the circuit component, analyzes the measured voltage waveform, and monitors the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference; and a processor that performs voltage ripple evaluation using the monitoring information output from the measurement unit and determines whether the automobile generator is broken based on the results of the voltage ripple evaluation.

Description

Apparatus and method for evaluating electrical characteristics of automotive generators {APPARATUS AND METHOD FOR EVALUATING ELECTRICAL CHARACTERISTICS OF AUTOMOTIVE GENERATORS}

Embodiments of the present invention relate to an apparatus and method for evaluating electrical characteristics of an automobile generator.

An automobile generator is also called an alternator (alternating current generator) or generator (an expression encompassing all direct current or alternating current generators). When the engine is running, it generates power as part of the power generated from the engine and supplies it to the battery. perform its role.

An automobile generator is composed of an alternator that is coupled to the vehicle engine and generates and outputs an alternating current voltage corresponding to the rotational driving force of the vehicle engine, and a voltage regulator that stabilizes the alternating voltage generated by the alternator and then provides it to the battery. .

Once these alternators and voltage regulators are designed and manufactured, they undergo a performance test process regarding electromagnetic compatibility before being installed in a vehicle. Existing performance test support devices provide rotational driving power of the vehicle engine through an electric motor instead. However, unlike vehicle engines, electric motors are electronic devices, so they inevitably generate electromagnetic waves when driven.

Existing technology is a method for evaluating the electrical characteristics of automotive generators. Voltage ripple evaluation, load dump testing, etc. are conducted as individual units through separate test configurations suited to each test method, so two tests are performed consecutively. There is a problem that cannot be done with . In particular, in the case of voltage ripple evaluation, existing standards focus only on the maximum resistance load, but since the loads that may occur in actual use environments are diverse, test conditions need to be additionally reflected to complement this.

Republic of Korea Patent Publication No. 10-2234410 (2021.03.25)

One embodiment of the present invention provides an apparatus and method for evaluating the electrical characteristics of an automobile generator, which allows determining whether a generator is malfunctioning by evaluating the electrical characteristics of the automobile generator.

The problem to be solved by the present invention is not limited to the problem(s) mentioned above, and other problem(s) not mentioned will be clearly understood by those skilled in the art from the description below.

An apparatus for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention includes a circuit component for checking current and voltage according to generator operation; A measuring unit that measures a voltage waveform according to each resistive load in the circuit component, analyzes the measured voltage waveform, and monitors the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference; and a processor that performs voltage ripple evaluation using the monitoring information output from the measurement unit and determines whether the automobile generator is broken based on the results of the voltage ripple evaluation.

The processor compares the monitoring information with the normal value of a normal product to perform voltage ripple evaluation to quantitatively check how much the monitoring information deviates from the range of the normal value, and determines whether the automotive generator is broken according to the confirmation result. can be judged.

In the case of a resistive load, the circuit configuration unit may set a plurality of additional resistive loads including the maximum load, and the measuring unit may monitor the maximum-minimum voltage value difference between each of the plurality of additional resistive loads including the maximum load.

The circuit component includes a dynamo that is connected to the automobile generator and battery and generates direct current according to the operation of the automobile generator; A relay circuit connected in series with the battery; And it may include a DC power supply that controls the operation of the relay circuit.

When performing the voltage ripple evaluation, the circuit component operates the DC power supply as a constant power source to set the relay circuit to a closed state, and the measuring unit determines that the circuit component continuously operates according to the closed state setting of the relay circuit. In an energized state, the voltage waveform according to each resistive load can be measured.

The processor may continuously perform the voltage ripple evaluation and load dump test through the circuit component that additionally configures the relay circuit and the DC power supply as an auxiliary circuit.

The circuit configuration unit operates the DC power supply in a sequence setting to open and close the relay circuit a certain number of times, and the measuring unit determines the load dump voltage and load dump time that occur when the relay circuit opens and closes a certain number of times. It can be measured and recorded as load dump information.

The processor performs the load dump test by comparing the load dump information with the normal value of a normal product to quantitatively confirm how much the load dump information deviates from the range of the normal value, and according to the confirmation result, an automobile generator It is possible to determine whether or not there is a malfunction.

A method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention includes the steps of: a measuring unit of the electrical characteristics evaluating device measuring a voltage waveform according to each resistance load within a circuit component; The measuring unit analyzes the measured voltage waveform and monitors the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference; performing voltage ripple evaluation by a processor of the electrical characteristics evaluation device using monitoring information output from the measurement unit; and determining, by the processor, whether the automotive generator is broken based on a result of the voltage ripple evaluation.

The step of determining whether the automotive generator is broken includes performing voltage ripple evaluation by comparing the monitoring information with a normal value of a normal product; By performing the voltage ripple evaluation, quantitatively confirming how much the monitoring information deviates from the range of the normal value; And it may include a step of determining whether the automobile generator is broken according to the verification result.

The method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention further includes the step of setting a plurality of additional resistance loads including the maximum load in the circuit component of the electrical characteristics evaluation device, and the monitoring step includes: It may include monitoring the maximum-minimum voltage value difference between each of a plurality of additional resistive loads including the maximum load.

The method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention further includes the step of setting the relay circuit to a closed state by operating the DC power supply as a constant power source when performing the voltage ripple evaluation. Including, the step of measuring the voltage waveform may include measuring the voltage waveform according to each resistive load while the circuit component is continuously energized according to the closed state setting of the relay circuit.

The processor may continuously perform the voltage ripple evaluation and load dump test through the circuit component that additionally configures the relay circuit and the DC power supply as an auxiliary circuit.

A method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention includes the steps of setting the circuit component of the electrical characteristic evaluation device to open and close the relay circuit a certain number of times by operating the DC power supply in a sequence setting; A measurement unit of the electrical characteristics evaluation device measures a load dump voltage and a load dump time that occur when the relay circuit is opened and closed a certain number of times and records the load dump information as load dump information; Comparing the load dump information with a normal value of a normal product by a processor of the electrical characteristic evaluation device to perform a load dump test; Quantitatively confirming how much the load dump information deviates from the range of the normal value as the processor performs the load dump test; and a step of the processor determining whether the automobile generator is broken according to the verification result.

Specific details of other embodiments are included in the detailed description and accompanying drawings.

According to an embodiment of the present invention, it is possible to determine whether a vehicle generator is malfunctioning by evaluating its electrical characteristics.

According to one embodiment of the present invention, it is possible to verify immunity to circuit problems that may occur in the user environment and check whether the performance of the voltage regulator operating during the process of converting the current generated by the generator into voltage is normal.

According to an embodiment of the present invention, simplification and efficiency of the test configuration can be expected through a combination of multiple electrical characteristic evaluations using a circuit composed of a combination of a relay and a DC power supply, and since additional test configurations are possible, compatibility , user convenience can be secured.

1 is a block diagram illustrating an apparatus for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention.
FIG. 2 is a block diagram shown to explain the detailed configuration of the circuit component of FIG. 1.
Figure 3 is a flowchart illustrating a voltage ripple evaluation process in a method for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention.
Figure 4 is a flowchart illustrating the load dump test process in the method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention.

The advantages and/or features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and are within the scope of common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In addition, preferred embodiments of the present invention to be implemented below are provided in each system function configuration in order to efficiently explain the technical components constituting the present invention, or system functions commonly provided in the technical field to which the present invention pertains. The configuration will be omitted whenever possible, and the description will focus on the functional configuration that must be additionally provided for the present invention. If a person has ordinary knowledge in the technical field to which the present invention pertains, he or she will be able to easily understand the functions of conventionally used components among the functional configurations not shown and omitted below, as well as the omitted configurations as described above. The relationships between elements and components added for the present invention will also be clearly understood.

In addition, in the following description, “transmission,” “communication,” “transmission,” “reception,” and other terms with similar meanings refer to the direct transmission of signals or information from one component to another component. In addition, it also includes those transmitted through other components. In particular, “transmitting” or “transmitting” a signal or information as a component indicates the final destination of the signal or information and does not mean the direct destination. This is the same for “receiving” signals or information.

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

1 is a block diagram illustrating an apparatus for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention.

Referring to FIG. 1, an apparatus 100 for evaluating electrical characteristics of an automobile generator according to an embodiment of the present invention may be configured to include a circuit configuration unit 110, a measurement unit 120, and a processor 130. there is.

The circuit component 110 may be composed of a plurality of circuit combinations in order to check the current and voltage according to the operation of the generator of the automobile generator.

That is, the circuit component 110 includes an automobile generator 210, a dynamo 220, a battery 230, a relay circuit 240, and a DC power supply 250, as shown in FIG. It can be configured.

The dynamo 220 is connected to the automobile generator 210 and the battery 230, and can generate direct current according to the operation of the automobile generator 210 and store it in the battery 230.

At this time, the connection structure of the dynamo 220 and the automobile generator 210 is not shown in the drawing, but is stably configured to ensure that the rotation characteristics according to the control of the dynamo 220 are displayed smoothly without loss through a coupler and jig. You can.

In addition, the dynamo 220 may be configured to check the current and voltage according to the generator operation through a connection to the B+ terminal and a ground (fixed to the generator body), including a connection to the battery 230.

The relay circuit 240 may be connected in series with the battery 230. In particular, the relay circuit 240 can be connected in series to the battery 230 and the B+ terminal path, and can be configured to freely implement electrical situations through this.

The DC power supply 250 may be connected to the relay circuit 240 to control the operation of the relay circuit 240. To this end, the DC power supply 250 may be configured to be pre-programmed in a form that allows control of power application characteristics.

When performing voltage ripple evaluation, the circuit component 110 may operate the DC power supply 250 as a constant power source and set the relay circuit 240 in a closed state so that it can be continuously energized.

At this time, in the case of a resistive load, the circuit component 110 may set a plurality of additional resistive loads including the maximum load. For example, the circuit component 110 can set 4 to 5 additional resistance loads, including the maximum load. This is to check the maximum-minimum voltage value difference in each resistive load state.

Meanwhile, when performing a load dump test, the circuit component 110 operates the DC power supply 250 in a sequence setting to open and close the relay circuit 240 a certain number of times (e.g., 3 times). You can set it.

The measuring unit 120 measures the voltage waveform according to each resistance load in the circuit component 110, analyzes the measured voltage waveform, and determines the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference. It can be monitored.

To this end, the measuring unit 120 can measure the voltage waveform according to each resistance load while the circuit component 120 is continuously energized according to the closed state setting of the relay circuit 240. there is.

At this time, the measuring unit 120 may monitor the maximum-minimum voltage value difference between each of the plurality of additional resistance loads including the maximum load. For example, the measuring unit 120 measures the voltage waveform of each of 4 to 5 additional resistance loads set by the circuit configuration unit 110, including the maximum load, and analyzes the measurement results. The maximum-minimum voltage value difference can be monitored.

Meanwhile, the measuring unit 120 can measure the load dump voltage and load dump time that occur when the relay circuit 240 opens and closes a certain number of times and record them as load dump information.

The processor 130 may perform voltage ripple evaluation using the monitoring information output from the measuring unit 120, and determine whether the automotive generator 210 is broken based on the results of the voltage ripple evaluation. there is.

Regarding whether the automotive generator 210 is malfunctioning, specifically, the processor 130 operates during the process of converting the current generated by the automotive generator 210 into a voltage through the voltage ripple evaluation. It is possible to determine whether the regulator's performance is normal.

To this end, the processor 130 performs voltage ripple evaluation by comparing the monitoring information with the normal value of a normal product to quantitatively confirm how much the monitoring information deviates from the range of the normal value, and according to the confirmation result, It is possible to determine whether the automotive generator 210 is broken.

Meanwhile, the processor 130 may perform the load dump test by comparing the load dump information measured and recorded through the measuring unit 120 with a normal value of a normal product. As a result, the processor 130 can quantitatively check how much the load dump information deviates from the range of the normal value and determine whether the automotive generator is broken based on the verification result.

In this way, the electrical characteristics evaluation device 100 performs the voltage ripple evaluation and the load dump test to evaluate the electrical characteristics. Conventionally, each test method is performed on an individual basis through a separate test configuration suitable for each test method. , there was a problem in which two tests (voltage ripple evaluation and load dump test) could not be performed continuously.

Accordingly, in this embodiment, the circuit component 110, which additionally configures the relay circuit 240 and the DC power supply 250 as auxiliary circuits, can be tested and configured with a simple operation, and thus the processor 130 The voltage ripple evaluation and the load dump test can be continuously performed through the test configuration of the circuit component 110.

The device described above may be implemented with hardware components, software components, and/or a combination of hardware components and software components. For example, devices and components described in embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), It may be implemented using one or more general-purpose or special-purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. A processing device may execute an operating system (OS) and one or more software applications that run on the operating system. Additionally, a processing device may access, store, manipulate, process, and generate data in response to the execution of software. For ease of understanding, a single processing device may be described as being used; however, those skilled in the art will understand that a processing device includes multiple processing elements and/or multiple types of processing elements. It can be seen that it may include. For example, a processing device may include multiple processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing unit to operate as desired, or may be processed independently or collectively. You can command the device. Software and/or data may be used on any type of machine, component, physical device, virtual equipment, computer storage medium or device to be interpreted by or to provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

Figure 3 is a flowchart illustrating a method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention. In particular, it is a diagram showing the process of determining whether the automobile generator is broken by performing voltage ripple evaluation. .

The method for evaluating the electrical characteristics of an automobile generator described here can be performed by the electrical characteristics evaluation device 100 of an automobile generator of FIG. 1 . In addition, the method for evaluating the electrical characteristics of an automobile generator is only one embodiment of the present invention. In addition, various steps may be added as needed, and the steps below may also be performed by changing the order. Therefore, the present invention is not limited to each step and its sequence described below. This can also be applied to other embodiments below.

Referring to FIGS. 1 and 3 , in step 310, the measurement unit 120 of the electrical characteristics evaluation device 100 may measure the voltage waveform according to each resistance load within the circuit component 110.

Next, in step 320, the measuring unit 120 of the electrical characteristics evaluation device 100 may analyze the measured voltage waveform and monitor the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference. .

Next, in step 330, the processor 130 of the electrical characteristics evaluation device 100 may perform voltage ripple evaluation using the monitoring information output from the measurement unit 120.

Next, in step 340, the processor 130 of the electrical characteristics evaluation device 100 may determine whether the automobile generator is broken based on the results of the voltage ripple evaluation.

Figure 4 is a flowchart illustrating a method for evaluating the electrical characteristics of an automobile generator according to an embodiment of the present invention. In particular, it is a diagram illustrating the process of determining whether or not an automobile generator is broken by performing a load dump test. .

Referring to FIGS. 1, 2, and 4, in step 410, the circuit component 110 of the electrical characteristics evaluation device 100 operates the DC power supply 250 in a sequence setting to operate the relay circuit 240. can be set to open and close a certain number of times.

Next, in step 420, the measuring unit 120 of the electrical characteristics evaluation device 100 measures the load dump voltage and load dump time that occur when the relay circuit 240 is opened and closed a certain number of times, and the load dump time is measured. It can be recorded as information.

Next, in step 430, the load dump information of the processor 130 of the electrical characteristic evaluation device 100 may be compared with a normal value of a normal product to perform a load dump test.

Next, in step 440, the processor 130 of the electrical characteristics evaluation device 100 can quantitatively determine how much the load dump information deviates from the range of the normal value by performing the load dump test. .

Next, in step 450, the processor 130 of the electrical characteristics evaluation device 100 may determine whether the automobile generator is broken according to the verification result.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and configured for the embodiment or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CDROMs and DVDs, and magneto-optical media such as floptical disks. Includes magneto-optical media and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

As described above, although the embodiments have been described with limited examples and drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments and equivalents of the claims also fall within the scope of the following claims.

110: circuit component
120: measuring unit
130: processor
210: Automotive generator
220: Dynamo
230: battery
240: relay circuit
250: DC power supply

Claims (14)

A circuit component for checking current and voltage according to generator operation;
A measuring unit that measures a voltage waveform according to each resistive load in the circuit component, analyzes the measured voltage waveform, and monitors the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference; and
A processor that performs voltage ripple evaluation using the monitoring information output from the measurement unit and determines whether the automobile generator is broken based on the results of the voltage ripple evaluation.
Including,
The circuit component is
A dynamo connected to the automobile generator and battery and generating direct current according to the operation of the automobile generator;
A relay circuit connected in series with the battery; and
An apparatus for evaluating electrical characteristics of an automobile generator, comprising a DC power supply that controls the operation of the relay circuit.
According to paragraph 1,
The processor is
By comparing the monitoring information with the normal value of a normal product and performing a voltage ripple evaluation, it is possible to quantitatively check how much the monitoring information is outside the range of the normal value, and determine whether the automobile generator is broken according to the confirmation result. A device for evaluating electrical characteristics of an automobile generator, characterized in that:
According to paragraph 1,
The circuit component is
For resistive loads, set a plurality of additional resistive loads including the maximum load,
The measuring part
An electrical characteristics evaluation device for an automobile generator, characterized in that monitoring the maximum-minimum voltage value difference between each of a plurality of additional resistance loads including the maximum load.
delete According to paragraph 1,
The circuit component is
When performing the voltage ripple evaluation, the DC power supply is operated as a constant power source and the relay circuit is set to a closed state,
The measuring part
An electrical characteristic evaluation device for an automobile generator, characterized in that the voltage waveform according to each resistance load is measured while the circuit component is continuously energized according to the closed state setting of the relay circuit.
According to paragraph 1,
The processor is
An apparatus for evaluating electrical characteristics of an automobile generator, characterized in that the voltage ripple evaluation and the load dump test are continuously performed through the circuit component additionally configured with the relay circuit and the DC power supply as an auxiliary circuit.
According to clause 6,
The circuit component is
Operating the DC power supply in a sequence setting to open and close the relay circuit a certain number of times,
The measuring part
An electrical characteristics evaluation device for an automobile generator, characterized in that the load dump voltage and load dump time that occur when the relay circuit is opened and closed a certain number of times are measured and recorded as load dump information.
In clause 7,
The processor is
By performing the load dump test by comparing the load dump information with the normal value of a normal product, it is quantitatively confirmed how much the load dump information deviates from the range of the normal value, and whether the automobile generator is broken according to the confirmation result. An electrical characteristics evaluation device for an automobile generator, characterized in that it determines.
A step of measuring the voltage waveform according to each resistance load in the circuit component by the measuring unit of the electrical characteristics evaluation device;
The measuring unit analyzes the measured voltage waveform and monitors the maximum voltage value, minimum voltage value, and maximum-minimum voltage value difference;
performing voltage ripple evaluation by a processor of the electrical characteristics evaluation device using monitoring information output from the measurement unit;
When performing the voltage ripple evaluation, the circuit component operates the DC power supply as a constant power source to set the relay circuit to a closed state; and
The processor determining whether the automotive generator is broken based on the results of the voltage ripple evaluation.
Including,
The step of measuring the voltage waveform is
A method for evaluating electrical characteristics of a generator for an automobile, comprising the step of measuring a voltage waveform according to each resistance load while the circuit component is continuously energized according to the closed state setting of the relay circuit.
According to clause 9,
The step of determining whether the automobile generator is broken is
Comparing the monitoring information with normal values of normal products to perform voltage ripple evaluation;
By performing the voltage ripple evaluation, quantitatively confirming how much the monitoring information deviates from the range of the normal value; and
Step to determine whether the automobile generator is broken according to the verification results
A method for evaluating the electrical characteristics of an automobile generator, comprising:
According to clause 9,
Setting a plurality of additional resistance loads including the maximum load by the circuit component of the electrical characteristics evaluation device.
It further includes,
The monitoring step is
Monitoring the maximum-minimum voltage value difference between each of a plurality of additional resistive loads including the maximum load.
A method for evaluating the electrical characteristics of an automobile generator, comprising:
delete According to clause 9,
The processor is
A method for evaluating electrical characteristics of an automobile generator, characterized in that the voltage ripple evaluation and the load dump test are continuously performed through the circuit component additionally configured with the relay circuit and the DC power supply as an auxiliary circuit.
Setting the circuit component of the electrical characteristics evaluation device to operate the DC power supply in a sequence setting to open and close the relay circuit a certain number of times;
A measurement unit of the electrical characteristics evaluation device measures a load dump voltage and a load dump time that occur when the relay circuit is opened and closed a certain number of times and records the load dump information as load dump information;
Comparing the load dump information with a normal value of a normal product by a processor of the electrical characteristic evaluation device to perform a load dump test;
Quantitatively confirming how much the load dump information deviates from the range of the normal value as the processor performs the load dump test; and
A step where the processor determines whether the automobile generator is broken according to the verification result.
A method for evaluating the electrical characteristics of an automobile generator, comprising: