KR102341332B1 - Device for detecting arc in output path of energy source - Google Patents

Abstract

An embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; And when the output voltage decreases while the output current decreases, it provides an arc detection device comprising an arc determination unit that highly evaluates the possibility of arc occurrence in the output path or determines that an arc has occurred in the output path.

Description

A device that detects an arc in the output path of an energy source {DEVICE FOR DETECTING ARC IN OUTPUT PATH OF ENERGY SOURCE}

This embodiment relates to a technique for detecting an arc.

The current flowing through the gas as a medium between two electrodes spaced apart or in unsafe contact is called an arc.

Arcs can be broadly classified into series arcs that occur in one conductor, parallel arcs that occur between two conductors, earth arcs that occur between ground and one conductor, and cross arcs that occur between other networks.

When such an arc occurs in the power system, some devices can fail. In particular, if the arc is left to occur continuously, since an electric fire may occur due to the deterioration caused by the arc discharge, it is necessary to detect the arc generation at an early stage and interrupt the corresponding power system so that an additional arc does not occur. .

International Patent Document WO2002/39561 introduces a technique for detecting an arc and interrupting the power system.

Against this background, an object of the present embodiment is to provide an arc detection technology different from the conventional one in one aspect. In another aspect, an object of the present embodiment is to provide a technique for an arc detection device that has higher accuracy than the prior art and can be implemented simply. In another aspect, an object of the present embodiment is to provide an arc detection technology specialized for an energy source, particularly a battery, in which variations in output current and output voltage have an inverse relationship.

In order to achieve the above object, an embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; And when the output voltage decreases while the output current decreases, it provides an arc detection device comprising an arc determination unit that highly evaluates the possibility of arc occurrence in the output path or determines that an arc has occurred in the output path.

The arc determination unit, when the absolute value of the time differential of the output voltage is equal to or greater than a reference value, may highly evaluate the possibility of arc occurrence in the output path or determine that an arc has occurred in the output path.

If the ratio of the reduction value of the output voltage to the reduction value of the output current is equal to or greater than a reference value, the arc determination unit may highly evaluate the possibility of arc occurrence in the output path or determine that an arc has occurred in the output path. .

The battery may have a characteristic in which the output voltage increases when the output current decreases according to an internal resistance of the battery.

The arc determination unit is, when the absolute time-differential value of the output current is equal to or greater than the first reference value and the absolute time-differential value of the output voltage is equal to or greater than the second reference value, highly evaluates the possibility of arcing in the output path or to the output path It can be judged that an arc has occurred.

The arc determination unit may determine the arc as a moving average of N (N is a natural number equal to or greater than 2) sampling values of the output current and the output voltage.

The arc determination unit performs a frequency analysis on the output current or the output voltage in a predetermined time period after the time when the output voltage decreases while the output current decreases, and when a component of a specific frequency band is equal to or greater than a reference value, the The possibility of arc generation in the output path may be highly evaluated or it may be determined that an arc has occurred in the output path.

Another embodiment provides an apparatus for detecting an arc in an output path of an energy source having an inverse relationship between variations in output current and output voltage, comprising: a measuring unit measuring the output current and the output voltage; Provided is an arc detection device comprising an arc determining unit that highly evaluates the possibility of arc occurrence in the output path or determines that an arc has occurred in the output path when the variation of the output current and the output voltage has a positive relationship.

The energy source may be modeled as including a voltage source and an internal resistance connected in series between the voltage source and an output terminal.

The arc determination unit, when both the time differential value of the output current and the time differential value of the output voltage are positive (+) or all negative (-), the fluctuation of the output current and the output voltage has a positive relationship can judge

The arc determination unit determines that when both the slope of the output current on the time axis and the slope of the output voltage on the time axis are positive (+) or all negative (-), the variation of the output current and the output voltage has a positive relationship can be judged to have

Another embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; and an arc determination unit configured to determine whether or not an arc is present in the output path based on the variation value of the output current and the variation value of the output voltage.

The arc determination unit may calculate an absolute value of the slope or slope on the time axis of the output current as a variation value of the output current, or use the absolute value of the slope or slope on the time axis of the output voltage as a variation value of the output current. can be calculated

The arc determination unit, when the fluctuation value of the output current is equal to or greater than the first reference value or the fluctuation value of the output voltage is equal to or greater than the second reference value, highly evaluates the possibility of arc occurrence in the output path or that an arc has occurred in the output path can judge

Another embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; and when a plurality of coordinates are located in the third quadrant when constructing plane coordinates with the change value of the output current and the change value of the output voltage, the possibility of arcing in the output path is highly evaluated or the output path To provide an arc detection device including an arc determination unit that determines that an arc has occurred.

The arc determination unit may calculate an absolute value of the slope or slope on the time axis of the output current as a variation value of the output current, or use the absolute value of the slope or slope on the time axis of the output voltage as a variation value of the output current. can be calculated

The arc determination unit, when a predetermined number or more of the coordinates are located in a predetermined area of the third quadrant, may highly evaluate the possibility of arc generation in the output path or determine that an arc has occurred in the output path.

The predetermined region may indicate a region in which both current and voltage fluctuations are large.

The arc determination unit, when the movement path of the coordinates on the plane or the pattern indicated by the plurality of coordinates corresponds to a certain type, highly evaluates the possibility of arc occurrence in the output path or determines that an arc has occurred in the output path can judge

The arc determination unit determines the degree of similarity between a plurality of previously stored movement paths or a plurality of patterns and a movement path of the coordinates or a pattern indicated by a plurality of the coordinates to highly evaluate the possibility of arc occurrence in the output path or the output path It can be judged that an arc has occurred.

The plurality of movement paths or the plurality of patterns may be extracted by learning by machine learning or artificial intelligence.
Another embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; and when the coordinates of the plane are constructed with the time fluctuation value of the output current as the X axis and the time fluctuation value of the output voltage as the Y axis, a predetermined number or more of the coordinates at a predetermined time are located in a predetermined area of the third quadrant In this case, there is provided an arc detection device including an arc determining unit for determining that an arc has occurred in the output path.
The arc determination unit may determine that an arc does not occur in the output path when the predetermined number or more of the coordinates at a predetermined time are located in another area of the second quadrant.
The predetermined region may be spaced apart from the origin by a predetermined distance or more.
The arc determination unit performs a frequency analysis on the output current or the output voltage after a time when the output voltage decreases while the output current decreases, and compares a component of a specific frequency band with a reference value to additionally determine whether an arc is generated can judge
The battery may have a characteristic in which the output voltage increases when the output current decreases according to an internal resistance of the battery.
Another embodiment provides an arc detection device disposed in an output path of a battery, comprising: a measuring unit for measuring an output current and an output voltage of the battery; and a movement path of the coordinates or a plurality of the coordinates in the third quadrant of the plane when the coordinates of the plane are configured with the time variation value of the output current as the X axis and the time variation value of the output voltage as the Y axis Provided is an arc detection device including an arc determining unit that determines that an arc has occurred in the output path when the pattern indicated by is of a certain type.
The arc determination unit may determine whether an arc is generated in the output path by determining a similarity between a plurality of previously stored moving paths or a plurality of patterns and a moving path of the coordinates or a pattern indicated by a plurality of the coordinates.
The plurality of movement paths or the plurality of patterns may be extracted by learning by machine learning or artificial intelligence.
The arc determination unit performs a frequency analysis on the output current or the output voltage after a time when the output voltage decreases while the output current decreases, and compares a component of a specific frequency band with a reference value to additionally determine whether an arc is generated can judge
The battery may have a characteristic in which the output voltage increases when the output current decreases according to an internal resistance of the battery.

As described above, according to the present embodiment, it is possible to implement an arc detection device that is simple and has high accuracy compared to the related art. In addition, according to the present embodiment, it is possible to detect an arc with higher accuracy for an energy source, in particular, a battery, in which fluctuations in output current and output voltage have an inverse relationship.

1 is a view for explaining the output characteristics of a general energy source.
FIG. 2 is an exemplary graph showing an output current and an output voltage of FIG. 1 .
3 is a block diagram of a power system according to an embodiment.
4 is a block diagram of an arc detection device according to an embodiment.
5 is a diagram for explaining the characteristics of an output current and an output voltage when an arc is generated.
6 is an exemplary graph showing an output current and an output voltage when an arc is generated.
7 is an exemplary graph showing a time variation value of an output current when an arc is generated.
8 is an exemplary graph showing a time-varying value of an output voltage when an arc is generated.
9 is an exemplary graph showing an output current and an output voltage in a steady state.
10 is an exemplary graph showing a time variation value of an output current in a steady state.
11 is an exemplary graph showing a time-varying value of an output voltage in a steady state.
12 is a frequency analysis graph for the output voltage in the first time period in FIG. 6 .
13 is a frequency analysis graph for the output voltage in the second time period in FIG. 6 .
14 is a frequency analysis graph for the output voltage in the third time period in FIG. 9 .
15 is a frequency analysis graph for the output voltage in the fourth time period in FIG. 9 .
16 is a view showing the output current/output voltage variation value coordinates in a steady state on a plane.
17 is a view showing the coordinates of the output current/output voltage fluctuation value when an arc is generated on a plane.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is formed between each component. It should be understood that elements may also be “connected,” “coupled,” or “connected.”

1 is a view for explaining the output characteristics of a general energy source.

Referring to FIG. 1 , the energy source 10 may be modeled as a voltage source Vs and an internal resistance Ri. In the model, the internal resistance Ri may be connected in series between the voltage source Vs and the output terminal Po. In addition, the output terminal Po of the energy source 10 may be electrically connected to the load Ld.

The load Ld is affected by the output voltage V formed at the output terminal Po of the energy source 10 and the output current I supplied to the load Ld through the output terminal Po, at this time, The output current I and the output voltage V may have an inverse relationship.

FIG. 2 is an exemplary graph showing an output current and an output voltage of FIG. 1 .

1 and 2 , when the output current I increases, the output voltage V decreases, and when the output current I decreases, the output voltage V may increase. This inverse relationship between the output current I and the output voltage V can be attributed to various factors of the energy source 10, one of which is the internal resistance Ri. The output voltage V may have a voltage different from that of the voltage source Vs according to the voltage drop due to the internal resistance Ri. At this time, when the output current (I) increases, the voltage drop due to the internal resistance (Ri) increases because the output voltage (V) decreases, and when the output current (I) decreases, the internal resistance (Ri) The output voltage V increases because the voltage drop is reduced.

A typical example in which the output current (I) and the output voltage (V) have an inverse relationship is a battery. Hereinafter, a battery will be described as an example for convenience of description, but the present embodiment is not limited to this example.

3 is a block diagram of a power system according to an embodiment.

Referring to FIG. 3 , the power system 300 may include an arc detection device 310 , an energy source 320 , and a load 330 .

The energy source 320 and the load 330 may be connected through the output path PT. The energy source 320 may supply power to the load 330 through the output path PT.

The arc detection device 310 may be disposed on the output path PT. The arc detection device 310 may measure an output current and an output voltage of power supplied through the output path PT while being disposed on the output path PT. In addition, the arc detection device 310 may evaluate the possibility of arc occurrence in the output path PT or determine whether an arc is generated by using the measured output current and output voltage.

4 is a block diagram of an arc detection device according to an embodiment.

Referring to FIG. 4 , the arc detecting device 310 may include a measuring unit 410 and an arc determining unit 420 .

The measurement unit 410 may measure an output current and an output voltage of an energy source - for example, a battery. To this end, the measuring unit 410 may include a current sensor (not shown) and a voltage sensor (not shown).

The arc determination unit 420 may evaluate the possibility of arc generation in the output path of the energy source or determine whether an arc is generated. An embodiment of the arc determination unit 420 will be described later.

5 is a diagram for explaining the characteristics of an output current and an output voltage when an arc is generated.

Referring to FIG. 5 , the energy source 320 may include a voltage source Vs and an internal resistance Ri connected in series with the output path PT. In addition, the arc detection device 310 may measure the output current Iar and the output voltage Var of the output path PT.

Meanwhile, when an arc is generated in the output path PT, an arc impedance Rar may be formed in the output path PT as shown in FIG. 5 . And, when an arc is generated, the arc impedance Rar is added to the output path PT, so that the output current Iar rapidly decreases.

2, when the output current decreases in the normal state, the output voltage increases, but in the arc state, due to the arc impedance Rar, simultaneously with the output current Iar, the output voltage Var also rapidly decreases. can do.

The arc detection device 310 may use the characteristics of the output current Iar and the output voltage Var different from the normal state to evaluate the possibility of arcing in the output path PT or to determine whether an arc is generated.

The arc detection device 310 may determine the arc by using time-dependent variations of the output current Iar and the output voltage Var.

6 is an exemplary graph showing an output current and an output voltage when an arc is generated.

Referring to FIG. 6 , an arc is generated at a first time point Ta, and the output current Iar and the output voltage Var are rapidly decreasing from the first time point Ta to the second time point Tb.

If the time variation value of the output current is equal to or greater than the first reference value, the arc detection device may highly evaluate the possibility of arc occurrence or determine that an arc has occurred. In the steady state, the output current does not change abruptly according to the normal control. The engineer can check the variation range of the output current in the steady state and set the first reference value based on the variation range.

When the variation value of the output voltage with respect to time is equal to or greater than the second reference value, the arc detection device may highly evaluate the possibility of arc occurrence or determine that an arc has occurred. In the steady state, the output current does not change rapidly, so the output voltage does not change rapidly. The engineer can check the variation range of the output voltage in the steady state and set the second reference value based on the variation range.

The variation value with respect to time may be a time differential value, an absolute time differential value, a slope on the time axis, or an absolute value of the slope on the time axis. In this case, the values may be calculated with a preset unit time. For example, the arc detection device may calculate a time differential value or a slope on the time axis by dividing the variation of the measured value by the unit time (2us). And, the arc detection device may determine the arc using the calculated value. The arc detection device may calculate the above-described value using the measured value as it is, and may calculate the above-described value using a moving average of N (N is a natural number equal to or greater than 2) sampling values.

The arc detection device may determine the arc by using one of the time variation value of the output current and the time variation value of the output voltage, and may determine the arc using both values at the same time.

As an example, when the absolute time-differential value of the output current Iar is equal to or greater than the first reference value and the absolute time-differential value of the output voltage is equal to or greater than the second reference value, the arc detection device evaluates the possibility of arcing in the output path highly or It can be judged that an arc has occurred in the output path.

As another example, the arc detection device has a positive relationship between the fluctuations of the output current Iar and the output voltage Var—for example, when the output current Iar decreases and the output voltage Var decreases at the same time. -, The possibility of arc occurrence in the output path can be highly evaluated or it can be judged that an arc has occurred in the output path. When the time differential value of the output current Iar and the time differential value of the output voltage Var are both positive (+) or both negative (-), the arc detection device determines the output current Iar and output voltage Var. It can be judged that the variation has a positive relationship. Alternatively, when the slope of the output current Iar on the time axis and the slope of the output voltage Var on the time axis are both positive (+) or both negative (-), the arc detection device determines the output current Iar and the output voltage ( Var) can be judged to have a positive relationship.

The arc detection device may determine the arc through frequency analysis. The arc detection device may use frequency analysis as a single factor or as an auxiliary factor for arc determination. For example, the arc detection apparatus may determine the arc through only frequency analysis, and may additionally use frequency analysis to increase the accuracy of the aforementioned arc determination.

The arc detection device performs the output current Iar or output current Iar or output current Iar or Frequency analysis is performed on the output voltage Var, and when a component of a specific frequency band is greater than or equal to a reference value in the frequency analysis, the possibility of arcing in the output path can be highly evaluated or it can be determined that an arc has occurred in the output path.

The arc detection device may determine the arc by comparing the frequency analysis in the time period before and after the time period (Ta to Tb) in which the fluctuation value of the output current Iar and/or the output voltage Var changes rapidly. For example, the arc detection device compares the frequency analysis value in the first time period TP1 which is the time period before Ta to Tb with the frequency analysis value in the second time period TP2 which is the time period after Ta to Tb to obtain a specific frequency. When the band component increases by more than the reference value, the possibility of arc occurrence in the output path can be highly evaluated or it can be determined that an arc has occurred in the output path.

7 is an exemplary graph showing a time variation value of an output current when an arc is generated.

Referring to FIG. 7 , in a steady state (a state before Tarc), the time variation value sI of the output current may have a value near zero. Here, the time variation value sI may be calculated as the magnitude of the output current dIar changed in the unit time dT.

When an arc is generated, the time fluctuation value sI of the output current may be sharply lowered. The arc detection device detects when the time fluctuation value sI is lower than the first reference value Ref1, or the time fluctuation value sI. When the absolute value is greater than the absolute value of the first reference value Ref1, the possibility of arc occurrence in the output path may be highly evaluated or it may be determined that the arc has occurred in the output path. In addition, the arc detection device may estimate the time variation value sI1 at a specific point in time to be lower than the first reference value Ref1, and this time may be estimated as the arc generation time Tarc.

8 is an exemplary graph showing a time-varying value of an output voltage when an arc is generated.

Referring to FIG. 8 , the time-varying value sV of the output voltage in a steady state (state before Tarc) may have a value near zero. Here, the time-varying value sV may be calculated as the magnitude of the output voltage dVar changed in the unit time dT.

When an arc occurs, the time-varying value (sV) of the output voltage may drop sharply, and the arc detection device detects when the time-varying value (sV) is lower than the second reference value (Ref2), or the time-varying value (sV) of the When the absolute value is greater than the absolute value of the second reference value Ref2, the possibility of arc occurrence in the output path may be highly evaluated or it may be determined that the arc has occurred in the output path. In addition, the arc detection device may have the time variation value sV1 at a specific point in time lower than the second reference value Ref2, and this time may be estimated as the arc generation time Tarc.

Since the arc characteristics of the output current and the output voltage are distinguished from the characteristics in a steady state, the possibility of an error in arc detection can be reduced. For comparison, output current and output voltage characteristics in a steady state will be described with reference to FIGS. 9 to 11 .

9 is an exemplary graph showing an output current and an output voltage in a steady state, FIG. 10 is an exemplary graph showing a time variation value of an output current in a steady state, and FIG. 11 is a time variation value of an output voltage in a steady state It is an example graph showing

Referring to FIG. 9 , there may be a relatively large change in output current even in a steady state. However, the magnitude of the variation value may be smaller than the reference value.

As an example, referring to FIG. 10 , a change may occur in the output current I according to a change in the load at the first time point Ta. However, since the time fluctuation value sI2 of the output current at the first time point Ta is higher than the first reference value Ref1, or the absolute value of the time fluctuation value sI2 is smaller than the absolute value of the first reference value Ref1, , it is unlikely that the arc detection device will erroneously judge such fluctuations as arcs.

As another example, referring to FIG. 11 , a change may occur in the output voltage V according to a change in the load at the first time point Ta. However, since the time variation value sV2 of the output voltage at the first time point Ta is higher than the second reference value Ref2, or the absolute value of the time variation value sV2 is smaller than the absolute value of the second reference value Ref2, , it is unlikely that the arc detection device will erroneously judge such fluctuations as arcs.

12 is a frequency analysis graph for the output voltage in the first time period in FIG. 6 , FIG. 13 is a frequency analysis graph for the output voltage in the second time period in FIG. 6 , and FIG. It is a frequency analysis graph for the output voltage in the time period, and FIG. 15 is a frequency analysis graph for the output voltage in the fourth time period in FIG. 9 .

12 and 13 , it can be seen that the component of a specific frequency band appears higher than the reference value TH in the graph after the arc is generated, unlike before the arc is generated. The arc detection device can determine the arc by recognizing a sudden change in the output current or output voltage. If the frequency analysis is further performed, the possibility of an error in the arc determination can be supplemented additionally.

14 and 15 , in the frequency analysis of the time period before and after the change in the output current and the output voltage (the third time period and the fourth time period), the component of the specific frequency band is higher than the reference value TH isn't showing up Even if the arc detection device erroneously recognizes a change in load as a sudden change in output current or output voltage, it is possible to reduce the possibility of such an error through frequency analysis.

Meanwhile, the arc detection device may determine whether an arc is present in the output path by using the relationship between the variation value of the output current and the variation value of the output voltage. For example, when the fluctuations of the output current and the output voltage have a positive relationship, the arc detection device may highly evaluate the possibility of arc generation in the output path or determine that the arc is generated in the output path. As a specific example, when the output voltage decreases while the output current decreases, the arc detection device may highly evaluate the possibility of arc generation in the output path or determine that an arc is generated in the output path.

Here, the arc detection device may calculate the absolute value of the slope or slope on the time axis of the output current as the variation value of the output current, or the absolute value of the slope or slope on the time axis of the output voltage as the variation value of the output current. .

On the other hand, the arc detection device can determine the arc by configuring the variation value of the output current and the variation value of the output voltage as a pair, and analyzing the characteristics of the pair. For example, the arc detection device may determine the arc by configuring the coordinates of the plane with the variation value of the output current and the variation value of the output voltage, and analyzing the characteristics of the coordinates.

16 is a view showing the coordinates of the output current/output voltage variation value in a steady state on a plane, and FIG. 17 is a diagram showing the coordinates of the output current/output voltage variation value when an arc occurs on the plane.

Referring to FIG. 16 , the output current/output voltage variation value coordinates may be intensively displayed in the region 1610 near the origin. When the coordinates are displayed in the region 1610 near the origin, it may mean that the time variation value of the output current and the time variation value of the output voltage are small.

When a change appears in the output current in a steady state, the coordinates of the output current/output voltage change value may be displayed while moving along the first path P1. Looking at the coordinates of the first path P1, most of the coordinates are located in the second quadrant. Positioning in the second quadrant means that the output current decreases and the output voltage increases at the same time. In the steady state, the coordinates may be located in the fourth quadrant, which may mean that the output voltage decreases while the output current increases.

Referring to FIG. 17 , the output current/output voltage variation value coordinates may be intensively displayed in a region 1610 near the origin.

And, when an arc occurs, the output current/output voltage variation value coordinates may be displayed while moving along the second path P2. Looking at the coordinates of the second path P2, most of the coordinates are located in the third quadrant. Positioning in the third quadrant means that the output current decreases and the output voltage increases at the same time.

When the arc detection device composes the coordinates of the plane with the fluctuation value of the output current and the fluctuation value of the output voltage, if a number of coordinates are located in the third quadrant, the possibility of arcing in the output path is highly evaluated or the arc is in the output path. can be considered to have occurred. In addition, when a predetermined number of coordinates or more are located in a predetermined area of the third quadrant, the arc detection device may highly evaluate the possibility of arc generation in the output path or determine that an arc has occurred in the output path. Here, the predetermined region may indicate a region in which both current and voltage fluctuations are large.

When a movement path of coordinates on a plane or a pattern indicated by a plurality of coordinates on a plane corresponds to a certain type, the arc detection device may highly evaluate the possibility of arc occurrence in the output path or determine that an arc has occurred in the output path.

The arc detection device judges the degree of similarity between a plurality of pre-stored moving paths or a plurality of patterns and a moving path of coordinates or a pattern indicated by a plurality of coordinates to highly evaluate the possibility of arcing in the output path or to indicate that an arc has occurred in the output path. can judge Here, a plurality of movement paths or a plurality of patterns may be extracted by learning by machine learning or artificial intelligence.

Terms such as "include", "comprise" or "have" described above mean that the corresponding component may be embedded unless otherwise stated, so it does not exclude other components. It should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (21)

As an arc detection device disposed in the output path of the battery,
a measuring unit measuring an output current and an output voltage of the battery; and
When the coordinates of the plane are constructed with the time variation value of the output current as the X axis and the time variation value of the output voltage as the Y axis, a predetermined number or more of the coordinates at a predetermined time are located in a predetermined area of the third quadrant In this case, an arc determination unit that determines that an arc has occurred in the output path
An arc detection device comprising a. According to claim 1,
The arc determination unit,
When the predetermined number or more of the coordinates at a predetermined time are located in another area of the second quadrant, the arc detection apparatus determines that an arc does not occur in the output path. According to claim 1,
The predetermined area is an arc detection device that is spaced apart from the origin by a predetermined distance or more. According to claim 1,
The arc determination unit,
An arc detection device that performs frequency analysis on the output current or the output voltage after a time when the output voltage decreases while the output current decreases, and compares components of a specific frequency band with a reference value to additionally determine whether an arc is generated . According to claim 1,
The battery is
An arc detection device having a characteristic in which the output voltage increases when the output current decreases according to an internal resistance of the battery. As an arc detection device disposed in the output path of the battery,
a measuring unit measuring an output current and an output voltage of the battery; and
When the coordinates of the plane are constructed with the time variation value of the output current as the X axis and the time variation value of the output voltage as the Y axis, the movement path of the coordinates in the third quadrant of the plane or a plurality of the coordinates is When the indicated pattern corresponds to a certain type, an arc determination unit that determines that an arc has occurred in the output path
An arc detection device comprising a. 7. The method of claim 6,
The arc determination unit,
An arc detection device for determining whether an arc is generated in the output path by determining a similarity between a plurality of previously stored moving paths or a plurality of patterns and a moving path of the coordinates or a pattern indicated by the plurality of coordinates. 8. The method of claim 7,
The plurality of moving paths or the plurality of patterns is an arc detection device that is extracted by learning by machine learning or artificial intelligence. 7. The method of claim 6,
The arc determination unit,
An arc detection device that performs frequency analysis on the output current or the output voltage after a time when the output voltage decreases while the output current decreases, and compares components of a specific frequency band with a reference value to additionally determine whether an arc is generated . 7. The method of claim 6,
The battery is
An arc detection device having a characteristic in which the output voltage increases when the output current decreases according to an internal resistance of the battery. delete delete delete delete delete delete delete delete delete delete delete

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