KR102629802B1 - Solar-based ess(energy storage system) safety inspection apparatus and the inspection method using the same - Google Patents

Abstract

The present invention provides a safety inspection device for a solar-based energy storage device, including a charging device (12) for charging the energy storage device (13) by receiving input power (11); A first coil unit 21 that supplies and detects a signal to the (+) terminal of the energy storage device 13; a second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13; a vertical coil unit 23 that detects a signal in the vertical direction of the external case of the energy storage device 13; a horizontal coil unit 24 that detects a signal in the horizontal direction of the external case of the energy storage device 13; A signal supply and detection unit 31 of the first coil unit 21 that supplies and detects a signal of the first coil unit 21; a signal supply and detection unit 32 of the second coil unit 22 that supplies and detects a signal of the second coil unit 22; A signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects a signal of the vertical coil unit 23; A signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects a signal of the horizontal coil unit 24; Information acquired from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. a main control unit 35 that remotely detects; The main control unit 35 proposes a safety inspection device for a solar energy-based energy storage device, which is characterized in that the safety of the energy storage device is inspected based on the detection state of the signal.

Description

Solar-based energy storage device safety inspection device and inspection method using the same {SOLAR-BASED ESS (ENERGY STORAGE SYSTEM) SAFETY INSPECTION APPARATUS AND THE INSPECTION METHOD USING THE SAME}

The present invention relates to a solar-based energy storage device safety inspection device and an inspection method using the same. In particular, the safety of lithium-ion batteries can be quickly detected in real time, and this can be transmitted to the manager's terminal (or smart phone) to This relates to inspection devices and inspection methods that improve the safety of light-based energy storage devices.

Recently, direct current (DC) current, which is the output of new renewable energy sources such as solar cells, wind power generation, and fuel cells, has been stored, and batteries for electric vehicles and mobility have fundamentally improved their safety through energy storage systems (ESS). Various research is being conducted to prevent fire and explosion of the energy storage system (ESS).

As a related prior document, Republic of Korea Patent Publication No. 10-1104535 (announcement date January 11, 2012, hereinafter referred to as [Patent Document 1]) discloses a monitoring device and method of at least one energy storage capacitor in a safety system. . In [Patent Document 1], in order to monitor the energy storage capacitor, a transformer is used to monitor the internal resistance (ESR) of the energy storage capacitor; The transformer charges at least one energy storage capacitor to a first voltage value exceeding the vehicle battery voltage, and the transformer is connected to a microcontroller so that the at least one energy storage capacitor is pulsed as a function of a signal from the microcontroller by the transformer. wherein a peak rectifier detects the second voltage value, the voltage passing through the peak rectifier drops to a third voltage value after pulsed charging, and the internal resistance is proposed a monitoring device characterized in that the voltage difference between the second and third voltage values is determined by a microcontroller.

Republic of Korea Patent Publication No. 10-1270798 (announcement date June 5, 2013, hereinafter referred to as [Patent Document 2]) disclosed a battery management system (BMS) inspection device for an energy storage system (ESS). In [Patent Document 2], a device for inspecting a battery management system for an energy storage system includes a voltage multimeter; current multimeter; power supply; Auxiliary power supply; A temperature board that applies virtual temperature data; an input/output board connecting contact points of the battery management system and the auxiliary power supply; Graphical User Interface (GUI); A battery management system inspection device for an energy storage system was proposed, which is comprised of a main board that controls to perform the battery management system inspection.

Republic of Korea Patent Publication No. 10-1822800 (announcement date January 26, 2018, hereinafter referred to as [Patent Document 3]) disclosed an energy storage device inspection device. In [Patent Document 3], an electrode unit including a pair of electrodes electrically connected to power terminals of an energy storage element; power supply; voltage measuring unit; a control unit that determines a defect in the energy storage element; The power supply unit supplies the direct current voltage to the energy storage element during a first period set by the control unit, and stops supplying the direct current voltage during a second period different from the first period. did.

In [Patent Document 1] to [Patent Document 3], there was a limitation that it was difficult to detect the status of the energy storage device in real time on a non-contact basis.

Republic of Korea Patent Publication No. 10-1104535, announced on January 11, 2012 Republic of Korea Patent Publication No. 10-1270798, announced on June 5, 2013 Republic of Korea Patent Publication No. 10-1822800, announced on January 26, 2018

The present invention seeks to propose a proposed solar-based energy storage system (ESS) safety inspection device and an inspection method using the same. The biggest problem with existing energy storage systems (ESS) is the risk of fire and explosion. In particular, energy storage devices have the fundamental disadvantage of causing explosions and fires in the worst case due to safety issues. In order to reliably detect this in real time and conduct safety inspection in real time, the first coil part, the second coil part, and the vertical nose In some cases, a signal can be supplied through a specific coil part among the horizontal coil parts, and signals are detected in the remaining coil parts excluding the specific coil part. The problem to be solved is to propose an inspection device and inspection method to check the stability of the energy storage device based on the detected signal.

In order to solve the above problem, the present invention provides a safety inspection device for a solar-based energy storage device, including a charging device 12 for charging the energy storage device 13 by receiving the output of the solar panel 14; A first coil unit 21 that supplies and detects a signal to the (+) terminal of the energy storage device 13; a second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13; a vertical coil unit 23 that detects a signal in the vertical direction of the external case of the energy storage device 13; a horizontal coil unit 24 that detects a signal in the horizontal direction of the external case of the energy storage device 13; A signal supply and detection unit 31 of the first coil unit 21 that supplies and detects a signal of the first coil unit 21; a signal supply and detection unit 32 of the second coil unit 22 that supplies and detects a signal of the second coil unit 22; A signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects a signal of the vertical coil unit 23; A signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects a signal of the horizontal coil unit 24; Information acquired from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. a main control unit 35 that remotely detects; The main control unit 35 uses a safety inspection device for solar energy-based energy storage devices, which is characterized in that it tests the safety of the energy storage device based on the detection state of the signal, as a means of solving the problem.

First, the invention allows the safety of the energy storage device to be confirmed in real time based on a non-contact method; second, it is a method of checking the status of the energy storage device based on the impedance according to the injection frequency of the energy storage device; and third, the energy storage device can be checked in real time. If an abnormality occurs in the device, an alarm can be transmitted wirelessly to the administrator's personal terminal or smart phone. Fourth, the variable frequency can be changed from high frequency to low frequency or low frequency. It has the increased effect of testing the safety of solar-based energy storage devices by accurately evaluating the stability of the energy storage device by varying the injection from low frequency to high frequency.

Figure 1 shows a proposed commercial power-based energy storage device safety inspection device.
Figure 2 is a proposed solar cell-based energy storage device safety inspection device.
Figure 3 is a detailed configuration diagram of the proposed energy storage signal injection and detection system.
Figure 4 is a detailed configuration diagram of the proposed first and second coil units.
Figure 5 is a detailed configuration diagram of the proposed vertical and horizontal coil parts.
Figure 6 is a frequency waveform diagram injected into the coil unit.

The present invention has been described with reference to the accompanying drawings for preferred embodiments. However, the embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as limited to the embodiments described in detail below, and should not be construed as limiting the scope of the present invention to those skilled in the art. It is provided for complete explanation.

Figure 1 shows the proposed commercial power-based energy storage device safety inspection device. The commercial power-based energy storage device includes a charging device 12 that receives alternating current power from the input power source 11 and generates a direct current output, and an energy storage device that receives the direct current output of the charging device 12 and stores electrical energy. It consists of a device (13). The energy storage device 13 has recently experienced fire and explosion problems due to a serious safety crisis. In the present invention, the technical goal is to monitor this in real time and ensure safety, and the energy storage device safety inspection device 10 is a first device that supplies and detects a signal to the (+) terminal of the energy storage device 13. The coil unit 21 is located, and the second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13 is located, and the external case of the energy storage device 13 is located. A basic major feature is that a vertical coil unit 23 is disposed to detect a signal in the vertical direction, and a horizontal coil unit 24 is disposed to detect a signal in the horizontal direction of the external case of the energy storage device 13. . There is a signal supply and detection unit 31 of the first coil unit 21 that supplies and detects the signal of the first coil unit 21, and the signal supply and detection unit 31 supplies and detects the signal of the second coil unit 22. There is a signal supply and detection unit 32 of the second coil unit 22, and a signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects the signal of the vertical coil unit 23, There is a signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects the signal of the horizontal coil unit 24. In addition, the signals obtained from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 A main control unit 35 that remotely detects information is disposed. The main control unit 35 performs the same role as a central server, comprehensively manages the data acquired so far, and comprehensively checks the current safety status based on impedance analysis of the energy storage device. The main control unit 35 inspects the safety of the energy storage device 13 in real time and transmits it to a personal terminal or smart phone 36, and detects abnormalities in the energy storage device 13. This confirmation is characterized by sending an alarm to the personal terminal or smart phone (36).

Figure 2 shows the proposed solar cell-based energy storage device safety inspection device. The energy storage device based on the solar cell 14 includes a charging device 12 that receives the output of the solar cell 14 and generates direct current output, and stores electrical energy by receiving the direct current output of the charging device 12. It consists of an energy storage device (13). The energy storage device 13 has recently experienced fire and explosion problems due to a serious safety crisis. In the present invention, the technical goal is to monitor this in real time and ensure safety, and the energy storage device safety inspection device 10 is a first device that supplies and detects a signal to the (+) terminal of the energy storage device 13. The coil unit 21 is located, and the second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13 is located, and the external case of the energy storage device 13 is located. A basic major feature is that a vertical coil unit 23 is disposed to detect a signal in the vertical direction, and a horizontal coil unit 24 is disposed to detect a signal in the horizontal direction of the external case of the energy storage device 13. . There is a signal supply and detection unit 31 of the first coil unit 21 that supplies and detects the signal of the first coil unit 21, and the signal supply and detection unit 31 supplies and detects the signal of the second coil unit 22. There is a signal supply and detection unit 32 of the second coil unit 22, and a signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects the signal of the vertical coil unit 23, There is a signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects the signal of the horizontal coil unit 24. In addition, the signals obtained from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 A main control unit 35 that remotely detects information is disposed. The main control unit 35 performs the same role as a central server, comprehensively manages the data acquired so far, and comprehensively checks the current safety status based on impedance analysis of the energy storage device. The main control unit 35 inspects the safety of the energy storage device 13 in real time and transmits it to a personal terminal or smart phone 36, and detects abnormalities in the energy storage device 13. This confirmation is characterized by sending an alarm to the personal terminal or smart phone (36).

Above all, the energy storage device safety inspection device is characterized by being able to ensure the stability of the energy storage device 13 based on various renewable energy sources such as solar cells, wind power generation, and fuel cells.

Figure 3 shows a detailed configuration diagram of the proposed energy storage signal injection and detection system. Supplying a signal of variable frequency to the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 in the safety inspection device of the energy storage device. First to fourth switches (S1 to S4) are disposed for. The first to fourth switches (S1 to S4) are turned on when the first switch (S1) and the second switch (S2) are turned on, the third switch (S3) and the fourth switch (S4) are turned on. When it turns off, the third switch (S3) and the fourth switch (S4) turn on, the first switch (S1) and the second switch (S2) turn off. The technical feature is a complementary operation that becomes a turn-off. Through this, a variable frequency of tens of Hz to hundreds of kHz can be supplied to the specific coil unit. In general, low frequencies propagate farther, and high frequencies propagate shorter distances. To detect signals generated from the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 in the safety inspection device of the energy storage device. A signal detection comparator 37 connected to both ends of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 is disposed, and the signal It features a signal injection and detection controller 38 that constantly determines the safety of the long-term energy storage device based on the signal from the detection comparator 37. The signal injection and detection controller 38 communicates with the main control unit 35 wirelessly. The main control unit operates in signal supply and detection units 45, 46, and 47 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. Based on the detected signal, the safety of the energy storage device 13 can be inspected in real time and the central server can analyze whether any abnormalities occur in the energy storage device 13. It performs a function, defines a state below a certain level as an abnormal state in the energy storage device 13, and transmits this information to the manager's personal terminal or smart phone 36. This is its biggest technical feature.

Figure 4 shows a detailed configuration diagram of the proposed first and second coil units. Figure 4(a) shows the proposed first and second coil parts unfolded, and Figure 4(b) shows the proposed first and second coil parts connecting the first connection part and the second connection part to form the coil part. It was done. It is essential that the first and second coil parts 21 and 22 be easily placed on the (+) and (-) terminals of the energy storage device 13. For this purpose, it is necessary to easily install the first and second coil parts 21 and 22, and for this purpose in the present invention, a coil band part 43 with an insulated coil, a first connection part 41, and a second connection part are used. It is characterized by the presence of (42). A connecting pin 44 is disposed on the second connecting portion 43, and the connecting pin 44 is connected (combined) with the first connecting portion 41 to form a coil.

By connecting the connecting pin 44 of the second connecting portion 42 with the first connecting portion 41, a circular coil portion as shown in FIG. 4(b) can be formed, and the first and second connecting portions Energy can be stored in the coil very easily by connecting to the first and second signal injection and detection controllers (31 and 32) through the signal supply and detection connector (45) on one side of (41, 42). It is characterized in that it can be placed on the (+) and (-) terminals of the device 13.

Figure 5 shows a detailed configuration diagram of the proposed vertical and horizontal coil parts. Figure 5(a) shows the proposed vertical and horizontal coil parts unfolded, and Figure 5(b) shows a square-shaped coil part formed by connecting the first and second connection parts of the proposed vertical and horizontal coil parts. will be. Above all, it is essential that the vertical and horizontal coil parts 23 and 24 be easily arranged in the vertical and horizontal directions on the external case of the energy storage device 13. For this purpose, it is necessary to easily install the vertical and horizontal coil parts 23 and 24, and for this purpose in the present invention, a coil band part 43 with an insulated coil, a first connection part 41, and a second connection part 42 ) is characteristic. A connecting pin 44 is disposed on the second connecting portion 43, and the connecting pin 44 is connected (combined) with the first connecting portion 41 to form a coil.

By connecting the connection pin 44 of the second connection part 42 with the first connection part 41, a square coil part as shown in FIG. 5(b) can be formed, and the first and second connection parts By connecting the vertical and horizontal signal injection and detection controllers (33, 34) through the signal supply and detection connection on one side of (41, 42), the coil can be very easily connected to the energy storage device (13). It is characterized by being able to be placed in an external case.

Figure 6 shows a frequency waveform diagram injected into the coil unit. Figure 6(a) injects frequency from high frequency to low frequency based on a sine wave, and Figure 6(b) injects frequency from high frequency to low frequency based on a sine wave. Frequency is injected from high frequency to high frequency, and Figure 6(c) injects frequency from high frequency to low frequency based on square wave, and Figure 6(d) shows square wave. It represents the injection of frequency from low frequency to high frequency based on square wave. The frequency is characterized by injecting a variable frequency from the lowest tens of Hz to the highest hundreds of kHz, and is based on a sine wave as shown in Figures 6(a) and (b), or as shown in Figure 6(c), It can be based on a square wave as shown in (d), and is characterized by being able to measure the values of resistance, inductance, and capacitance at a specific frequency through variable frequency as described above. Therefore, the biggest technical feature is that the variable frequency is injected while changing from high frequency to low frequency or from low frequency to high frequency. In this way, the stability of the energy storage device is accurately evaluated through the variable frequency as a sine wave or square wave, and in particular, the impedance can be calculated more accurately with a square wave than with a sine wave. There is an effect.

Therefore, the present invention provides a safety inspection device for a solar-based energy storage device, including a charging device 12 for charging the energy storage device 13 by receiving the output of the solar panel 14; A first coil unit 21 that supplies and detects a signal to the (+) terminal of the energy storage device 13; a second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13; a vertical coil unit 23 that detects a signal in the vertical direction of the external case of the energy storage device 13; a horizontal coil unit 24 that detects a signal in the horizontal direction of the external case of the energy storage device 13; A signal supply and detection unit 31 of the first coil unit 21 that supplies and detects a signal of the first coil unit 21; a signal supply and detection unit 32 of the second coil unit 22 that supplies and detects a signal of the second coil unit 22; A signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects a signal of the vertical coil unit 23; A signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects a signal of the horizontal coil unit 24; Information acquired from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. a main control unit 35 that remotely detects; We would like to propose a safety inspection device for solar energy-based energy storage devices, which is characterized in that the main control unit 35 tests the safety of the energy storage device based on the detection state of the signal.

In addition, the present invention relates to a safety inspection method for a solar-based energy storage device, wherein a charging device 12 is provided to charge the energy storage device 13 by receiving the output of the solar panel 14, and the charging device 12 is provided to charge the energy storage device 13. A first step of receiving the output from (12) and supplying a signal to the first coil unit 21 of the energy storage device 13 for storing electrical energy; A second step of detecting a signal from the second coil unit 22 of the energy storage device 13; A third step of detecting a signal from the vertical coil unit 23 of the energy storage device 13; A fourth step of detecting a signal from the horizontal coil unit 24 of the energy storage device 13; A fifth step of wirelessly transmitting signals detected from the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 to the main control unit 35; A sixth step in which the main control unit 35 determines the stability of the energy storage device 13 based on the signal; The main control unit 35 intends to propose a safety inspection method for solar energy-based energy storage devices, characterized by a seventh step of inspecting the safety of the energy storage device in real time and transmitting it to a personal terminal or smart phone. do.

The above description is merely an illustrative explanation of the technical idea of the present invention, and the present invention can be applied to a safety inspection device for a solar-based energy storage device and an inspection method using the same through various modifications by those skilled in the art. It is possible to do so, and the scope of technology that can be easily modified technically should also be recognized as falling within the scope of the rights of this patent.

10: Energy storage device safety inspection device
11: input power
12: Charging device
13: Energy storage system (ESS)
14: Solar panel (PV Panel)
21: first coil part
22: second coil unit
23: Vertical coil part
24: horizontal coil part
31: Signal supply and detection unit of the first coil unit
32: Signal supply and detection unit of the second coil unit
33: Signal supply and detection unit of vertical coil unit
34: Signal supply and detection unit of the horizontal coil unit
35: main control unit
36: Personal terminal or smart phone
37: signal detection comparator
38: Signal injection and detection controller
41: first connection part
42: second connection part
43: coil band part
44: connection pin
45: Signal supply and detection connection part
S1: first switch
S2: second switch
S3: third switch
S4: fourth switch
Vin: Internal power

Claims (6)

In the safety inspection device for solar-based energy storage devices,
A charging device 12 for charging the energy storage device 13 by receiving the output of the solar panel 14;
A first coil unit 21 that supplies and detects a signal to the (+) terminal of the energy storage device 13;
a second coil unit 22 that supplies and detects a signal to the (-) terminal of the energy storage device 13;
a vertical coil unit 23 that detects a signal in the vertical direction of the external case of the energy storage device 13;
a horizontal coil unit 24 that detects a signal in the horizontal direction of the external case of the energy storage device 13;
A signal supply and detection unit 31 of the first coil unit 21 that supplies and detects a signal of the first coil unit 21;
a signal supply and detection unit 32 of the second coil unit 22 that supplies and detects a signal of the second coil unit 22;
A signal supply and detection unit 33 of the vertical coil unit 23 that supplies and detects a signal of the vertical coil unit 23;
A signal supply and detection unit 34 of the horizontal coil unit 24 that supplies and detects a signal of the horizontal coil unit 24;
Information acquired from the signal supply and detection units 31, 32, 33, and 34 of the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. a main control unit 35 that remotely detects;
The first coil unit 21 to detect signals generated in the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24, A signal detection comparator 37 connected to both ends of the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24;
It includes a signal injection and detection controller (38) that continuously determines the safety of the energy storage device based on the signal of the signal detection comparator (37),
A safety inspection device for solar energy-based energy storage devices, characterized in that the main control unit 35 tests the safety of the energy storage device based on the detection state of the signal. In claim 1
Supplying a signal of variable frequency to the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 in the safety inspection device of the energy storage device. It further includes first to fourth switches (S1 to S4) for,
The first to fourth switches (S1 to S4) are turned on when the first switch (S1) and the second switch (S2) are turned on, the third switch (S3) and the fourth switch (S4) are turned on. It becomes a turn-off;
When the third switch (S3) and the fourth switch (S4) are turned on, the first switch (S1) and the second switch (S2) are turned off. Safety inspection device for solar-based energy storage devices In claim 2
The first to fourth switches (S1 to S4) control a variable frequency of tens of Hz to hundreds of kHz, and the variable frequency changes from high frequency to low frequency or low frequency based on a square wave. A safety inspection device for solar energy-based energy storage devices, characterized by injection while varying from low frequency to high frequency. delete delete In the safety inspection method of solar-based energy storage devices,
A charging device 12 is located to receive the output of the solar panel 14 and charge the energy storage device 13, and an energy storage device ( A first step of supplying a signal to the first coil unit 21 of 13);
A second step of detecting a signal from the second coil unit 22 of the energy storage device 13;
A third step of detecting a signal from the vertical coil unit 23 of the energy storage device 13;
A fourth step of detecting a signal from the horizontal coil unit 24 of the energy storage device 13;
A fifth step of wirelessly transmitting signals detected from the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24 to the main control unit 35;
A sixth step in which the main control unit 35 determines the stability of the energy storage device 13 based on the signal;
The signal injection and detection controller 38 detects signals generated in the first coil unit 21, the second coil unit 22, the vertical coil unit 23, and the horizontal coil unit 24. A seventh step of continuously determining the safety of the energy storage device based on the signal from the detection comparator 37;
An eighth step in which the main control unit 35 inspects the safety of the energy storage device in real time and transmits it to a personal terminal or smart phone;
Safety inspection method for solar-based energy storage devices characterized by