Power line communication module

Abstract

A power line communication module according to one embodiment of the present invention comprises: a core including a hole in the center thereof; a communication module performing power line communication by using a signal of a power line passing through the hole of the core; a substrate on which the communication module is disposed; a first body including a first core-receiving part receiving at least a portion of the core and a substrate-receiving part receiving the substrate; and a second body including a second core-receiving part corresponding to the first core-receiving part and receiving the remaining portion of the core.

Description

Power line communication module

[0001] The present invention relates to a power line communication module, and is an invention relating to a power line communication module for a rapid cut-off function and an inverter module including the same.

[0002] Solar power generation is becoming widely adopted as an eco-friendly energy source, replacing conventional chemical and nuclear power generation. Solar power generation can be either standalone, with a battery connected to a converter, or grid-connected. Standalone systems typically consist of photovoltaic panels, storage batteries, and power conversion equipment, while grid-connected systems are connected to commercial power sources, enabling the exchange of power with load grid lines.

[0003] In the event of an emergency in a solar power generation system, the solar power must be rapidly shut off. Power reduction or shutdown of solar panels is controlled by the MLPE directly connected to the panels. A shutdown signal transmitted from an inverter or external to the system can be received via power line communication to initiate rapid shutdown. The power line communication transmitter, if installed externally in a separate junction box, requires separate installation, making it difficult to integrate into the system.

[0004] The technical problem to be solved by the present invention is to provide a power line communication module for a rapid cut-off function and an inverter module including the same.

[0005] In order to solve the above technical problem, a power line communication module according to an embodiment of the present invention includes: a core including a hole in the center; a communication module performing power line communication using a signal of a power line passing through the hole of the core; a substrate on which the communication module is arranged; a first body including a first core receiving portion that receives at least a portion of the core and a substrate receiving portion that receives the substrate; and a second body including a second core receiving portion corresponding to the first core receiving portion and receiving the remaining portion of the core.

[0006] In addition, the first body includes the first core receiving portion including a first bottom plate including a first hole in the center and a first side extending from the first bottom plate; a first base; two first support portions spaced apart from each other, extending upward from an upper surface of the first base, and contacting an outer surface of the first side of the first core receiving portion; and a substrate receiving portion forming an internal space for receiving a substrate in the outer surface direction of the first bottom plate of the first core receiving portion; and the second body includes the second core receiving portion including a second bottom plate including a second hole in the center and a second side extending from the second bottom plate; a second base; and two second support portions spaced apart from each other, extending upward from an upper surface of the second base, and contacting an outer surface of the second side of the second core receiving portion, and respectively corresponding to the two first support portions.

[0007] Additionally, the first core receiving portion may be spaced apart from the base, and the space between the first core receiving portion, the two first support portions, and the base may form a third hole.

[0008] In addition, the substrate receiving portion may include a third bottom plate that forms a space corresponding to the shape of the substrate and includes a fourth hole corresponding to the first hole of the first bottom plate; a third side portion extending from an edge of the third bottom plate; and a fourth side portion extending from an edge of the fourth hole of the third bottom plate, and the third bottom plate may include a fifth hole corresponding to the third hole.

[0009] In addition, the core includes a communication line that wraps around the core a predetermined number of times, and the communication line can be connected to the substrate through the fifth hole of the third base plate.

[0010] In addition, the first core receiving portion may include a sixth hole on the first side through which the communication line passes, and the second core receiving portion may include a seventh hole on the second side through which the communication line passes and which corresponds to the sixth hole.

[0011] Additionally, the substrate may include a first connector connected to the communication line on a surface exposed through the fifth hole.

[0012] In addition, the first core receiving portion includes a plurality of third support portions that extend from the first side toward the core to support the core and are spaced apart from each other, and the second core receiving portion includes a plurality of fourth support portions that extend from the second side toward the core to support the core and are spaced apart from each other and correspond to the third support portions, and the communication line can be arranged to surround the core through a space between the plurality of third support portions and a space between the plurality of fourth support portions.

[0013] Additionally, the substrate can be screw-connected to the third floor plate.

[0014] In addition, the two second supporting portions include a hook portion protruding from the opposite surface of the mutually facing surface, the two first supporting portions extend from the opposite surface of the mutually facing surface toward the two second supporting portions and include a hook hole corresponding to the hook portion, and when the first body and the second body are coupled, the hook portion and the hook hole can be hook-coupled.

[0015] In addition, the first side of the first core receiving portion includes a coupling groove along a surface in contact with the second side, and the second side of the second core receiving portion includes a coupling protrusion corresponding to the coupling groove along a surface in contact with the first side, and when the first body and the second body are coupled, the coupling groove and the coupling protrusion can be fitted together.

[0016] In addition, the first hole of the first core receiving portion and the second hole of the second core receiving portion correspond to each other, and the main power line of the inverter module can pass through the first hole and the second hole.

[0017] Additionally, when the first body and the second body are combined, the first base and the second base form a third base, and the third base can be placed on a substrate of the inverter module.

[0018] Additionally, the third base can be screw-connected to the substrate of the inverter module.

[0019] In addition, the substrate includes a second connector connected to a quick-disconnect switch of the inverter module or a third connector connected to an external power source, and when the quick-disconnect switch operates, the communication module may stop operating or power may be cut off from the external power source.

[0020] In order to solve the above technical problem, an inverter module according to an embodiment of the present invention includes an input unit for receiving power from a PV module; a power conversion unit for converting the input power; an output unit for outputting the converted power; and a power line communication module for performing power line communication using a signal of a power line for receiving the power, wherein the power line communication module includes: a core including a hole in the center; a communication module for performing power line communication using a signal of a power line passing through the hole of the core; a first substrate on which the communication module is disposed; a first body including a first core receiving unit for accommodating at least a portion of the core and a substrate receiving unit for accommodating the first substrate; and a second body including a second core receiving unit corresponding to the first core receiving unit and accommodating the remaining portion of the core, wherein the power line communication module is disposed on a main substrate.

[0021] According to embodiments of the present invention, a power line communication transmission module and a rapid shutdown switch can be built into an inverter to simplify a rapid shutdown system. The built-in communication module can be mechanically assembled into a wire box within the inverter, and can be assembled or mounted on the DC-DC input terminal within the inverter to minimize signal interference, thereby simplifying the assembly process.

[0022] FIG. 1 is a block diagram of an inverter module having a built-in power line communication module according to one embodiment of the present invention.

[0023] Figure 2 is a perspective view of a power line communication module according to an embodiment of the present invention.

[0024] FIGS. 3 to 13 are drawings for explaining the configuration of a power line communication module according to an embodiment of the present invention.

[0025] FIG. 14 is a drawing for explaining a structure in which a power line communication module according to an embodiment of the present invention is mounted inside an inverter.

[0026] FIGS. 15 to 19 are drawings for explaining a power line communication module according to another embodiment of the present invention.

[0027] Figure 20 is a block diagram of an inverter module according to an embodiment of the present invention.

[0028] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0029] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0030] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0031] Additionally, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0032] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0033] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0034] And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

[0035] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward direction based on one component.

[0036] FIG. 1 is a block diagram of an inverter module having a built-in power line communication module according to an embodiment of the present invention. FIG. 2 is a perspective view of a power line communication module according to an embodiment of the present invention, FIGS. 3 to 13 are drawings for explaining the configuration of a power line communication module according to an embodiment of the present invention, and FIG. 14 is a drawing for explaining the structure in which a power line communication module according to an embodiment of the present invention is mounted inside an inverter.

[0037] A power line communication module (100) according to one embodiment of the present invention is a power line communication module (100) mounted on an inverter module (200) of a solar power generation system, and can be mounted inside the inverter module (200).

[0038] The inverter module (200) may include an input unit (210), a power conversion unit (220), an output unit (230), and a power line communication module (100). The inverter module (200) includes an input unit (210) that receives power from a PV module (311), a power conversion unit (220) that converts the power received by the input unit (210), an output unit (230) that outputs the power converted by the power conversion unit (220) to the grid (320), and a power line communication module (100) that performs power line communication using a signal of a power line that receives power. The power conversion unit (220) may include a DC-DC converter (221), a DC-Link (222), a DC-AC inverter (223), and a relay (240).

[0039] A PV module (311) generates electricity through solar power generation using sunlight. The PV module (311) may include a PV panel, and the PV panel may include a plurality of cell strings. A solar cell that performs solar power generation may be expressed as a cell string unit in which a plurality of cells are connected in series. A cell string may include at least one cell, and when including a plurality of cells, the plurality of cells may be connected in series. A cell string may be a solar cell string including solar cells. A solar cell string may form a PV panel. A PV panel may also be referred to as a solar panel or solar power generation panel. Solar cells generate solar power (PV, Photovoltaic) by using the photovoltaic effect. The photovoltaic effect is the emission of electrons when light above a certain frequency strikes a specific metal material. A pn ​​junction is formed using a p-type semiconductor and an n-type semiconductor, and current is generated using electrons generated by the photovoltaic effect, thereby generating power. Solar cells are formed using silicon or the like, and may be formed in a wafer shape. Solar cells are located in areas with ample sunlight, such as fields, building exteriors, or rooftops, and use sunlight to generate electricity. These cells can be integrated into the building, forming a building-integrated photovoltaic (BIPV) system.

[0040] Since the amount of power generated from a single solar cell is insufficient to be utilized by a load or power system, power suitable for utilization can be generated by connecting multiple solar cells in series to form a solar cell string instead of a single solar cell. A solar cell string can be a basic unit for generating power. A photovoltaic panel can be formed by forming multiple cell strings, which are basic units, into a panel. Solar cells have different voltage-current characteristics depending on the amount of sunlight, temperature, etc., and the maximum power point (MPP) also changes. (Generated power = Voltage X Current)

[0041] The MLPE (312) performs maximum power point tracking control for the PV module (311). The MLPE (312) can be referred to as a DC optimizer and can perform maximum power point tracking control so that the PV module (311) outputs maximum power. In other words, the MLPE can optimize the output power of the cell string so that the solar cells of the PV module (311) operate at the maximum power point (MPP), which is the operating point where the power is maximum under each condition. This is called maximum power point tracking (MPPT), and the efficiency of solar power generation can be improved by using maximum power point tracking. In solar power generation, depending on the characteristics of the relationship between current and voltage and the relationship between voltage and power, the maximum power can be the power when it is about 80% of the maximum voltage, not the maximum voltage. Since this maximum power point continues to change depending on the magnitude of the voltage and current generated by the PV panel, it is necessary to continuously search for a point where the maximum power point can be generated. That is, in order to pursue maximum power rather than maximum voltage, the magnitude of voltage and current can be varied to achieve maximum power. That is, the voltage can be reduced and the current can be increased in the direction of increasing power, or the voltage can be increased and the current can be reduced.

[0042] MLPE (312) can perform maximum power point tracking control on the PV module (311) to transmit power output from the PV module (311) to the inverter. The power supplied to the inverter is supplied to the DC link (222) via the DC-DC converter (221), and can be converted into AC power via the DC-AC inverter (223) and output to the grid (320) via the relay (240).

[0043] As shown in Fig. 20, the DC-DC converter (221) can convert the power input from the PV module (311) into power suitable for the DC-AC inverter (223) when outputting the power to the DC-AC inverter (223) via the DC link (222). Alternatively, the DC-DC converter (221) can charge the battery with the power input from the PV module (311) via the DC link (222) and convert it into power suitable for the battery. At this time, the DC-DC converter (221) can include one of a buck converter, a boost converter, and a buck-boost converter depending on the voltage size of the PV module (311). The PV module (311) includes a plurality of PV modules, and the magnitude of the input voltage can vary depending on the connection relationship of the plurality of PV modules. If the voltage of the PV module input from the PV module (210) is smaller than the magnitude of the voltage transmitted to the DC-AC inverter (223) or the battery, a step-up is required, and the DC-DC converter (221) may include a boost type power conversion unit. If the voltage of the PV module input from the PV module (311) is larger than the magnitude of the voltage transmitted to the DC-AC inverter (223) or the battery, a step-down is required, and the DC-DC converter (221) may include a buck type power conversion unit. If the voltage of the PV module input from the PV module (311) includes a range that is smaller or larger than the magnitude of the voltage transmitted to the DC-AC inverter (223) or the battery, a step-up or step-down is required, and the DC-DC converter (221) may include a buck-boost type power conversion unit.

[0044] The DC-AC inverter (223) can supply power to the grid (320) or a load. The DC-AC inverter (223) can receive DC power output from the DC link (222), convert it into AC power, and supply power to the load or the grid. AC power can be supplied to a load requiring AC power, and excess power can be transmitted to the grid, i.e., the system. Alternatively, AC power can be received from the grid, converted into DC power, and output to a power transmission device. The DC-AC inverter (223) can supply power to the grid (320) via a relay capable of disconnecting the connection to the grid (320). If the connection to the grid (320) is disconnected, the entire system excluding the grid can be switched to independent operation.

[0045] MLPE (312) can perform power line communication using a power line that supplies power to the inverter module (200). Communication can be performed with the MCU of the inverter module (200) or an external MCU without a separate communication line or wireless communication. At this time, MLPE (312) can receive an RSD signal from the inverter module (200) using power line communication. It periodically receives an enable signal through power line communication, but when the enable signal is not received, the operation of the PV module (311) can be stopped to allow the RSD operation to be performed.

[0046] When an abnormality is detected in the status information received from the PV module (311), when a risk of fire or other problem occurs, or when an RSD operation command is received from a power conversion device or the outside, an RSD (Rapid Shut Down) function that quickly stops the PV module (311) is required. RSD, a rapid shutdown function, is standardized as NEC 2017 690.12 Rapid Shutdown and is a function that reduces the voltage of the PV module to 30 V or less or shuts it off within 30 seconds.

[0047] For RSD operation, a power-consuming resistor and a switch connecting the resistor may be included. By dissipating power through the resistor, the voltage of the PV module (311) can be quickly lowered to a first value or lower, thereby ensuring safety.

[0048] The power line communication module (100) according to an embodiment of the present invention detects a power line communication signal included in a power line with the MLPE (312), and when the RSD switch (250) operates, the MLPE (312) can perform an RSD operation. As described above, the RSD operation can be performed by not receiving an enable signal from the inverter module (200) or by receiving a blocking signal. The transmission and reception of signals uses the power line communication method, and in a normal situation, the power line transmission module (PLC Transmitter) installed inside the inverter or outside the power generation system continuously transmits a signal to the reception module of the MLPE (312) at intervals of about 1 second. However, in the event of an abnormal situation, when the RSD switch (250) is turned on, the operation of the inverter module (200) is turned off, and the reception module of the MLPE (312) can detect that the signal has been disconnected and perform the RSD operation.

[0049] The power line communication module (100) according to an embodiment of the present invention can be built into the inverter module (200) to simplify the RSD system. The RSD switch (250) is connected to the power line communication module (100) and, when the switch is turned on, can turn off the entire power of the power line communication module (100) or turn off the communication chip operation to block the signal transmitted to the MLPE (312).

[0050] The power line communication module (100) according to an embodiment of the present invention can be mounted inside an inverter module (200) and can be configured to be arranged on a main board (260) of the inverter module (200). To this end, the power line communication module (100) according to an embodiment of the present invention can be configured with a core (110), a communication module (not shown), a board (150), a first body (120), and a second body (140). As shown in FIGS. 2 and 3, the second body (140), the core (110), the first body (120), and the board (150) can be arranged and combined in that order.

[0051] The power line communication module (100) according to an embodiment of the present invention can perform power line communication using an inductor coupling method using a toroidal inductor that wraps a core (110) including a hole through which a power line passes with a coil.

[0052] The core (110) includes a hole in the center, and the communication module can perform power line communication using a signal of a power line passing through the hole of the core (110). The communication module transmits a signal to the MLPE (312) using the power line, but when the RSD switch (250) is turned on, the signal through the power line can be blocked, thereby allowing the MLPE (312) to perform an RSD operation.

[0053] A power line communication module (100) according to an embodiment of the present invention may include a first body (120) and a second body (140) that accommodate a core (110) and a substrate (150) on which a communication module is arranged, in order to be mounted on an inverter module (200).

[0054] The first body (120) may include a first core receiving portion that receives at least a portion of the core (110) and a substrate receiving portion that receives the substrate (150), and the second body (140) may include a second core receiving portion that corresponds to the first core receiving portion of the first body (120) and receives the remaining portion of the core (110).

[0055] The first core receiving portion of the first body (120) and the second core receiving portion of the second body (140) are combined to receive the core (110), and the substrate receiving portion of the first body (120) receives the substrate (150) on which the communication module is placed, thereby forming a single module, and can be mounted inside the inverter module (200) by being placed and combined on the substrate of the inverter module (200).

[0056] The first body (120) may include a first base (124), a first support (125), a first core receiving portion, and a substrate receiving portion. The first body (120) may be configured as shown in FIGS. 4 to 7.

[0057] The first core receiving portion may include a first bottom plate (121) and a first side portion (123). The first bottom plate (121) may include a first hole (122) in the center and may be formed in a shape corresponding to the shape of the core (110). As shown in FIGS. 4 and 5 , the first bottom plate (121) may be formed in a circular shape. The first side portion (123) may extend from the first bottom plate (121). The first side portion (123) may extend and form a curved surface along the edge of the circular shape of the first bottom plate (121).

[0058] The first base (124) is formed in a plate shape and, when combined with the substrate (260) of the inverter module (200), comes into contact with the substrate (260) of the inverter module (200) to support the power line communication module (100). The direction in which the upper surface of the first base (124) faces may be perpendicular to the direction in which the first bottom surface of the first core receiving portion faces.

[0059] The first support portion (125) can support the first core receiving portion while spacing it apart from the first base (124). The first support portion (125) can include two first support portions (125). The two first support portions (125) can be spaced apart from each other and extend upward from the upper surface of the first base (124). The ends of the first support portions (125) can contact the outer surface of the first side portion (123) of the first core receiving portion. The two first support portions (125) can extend upward from the first base (124) so ​​as to contact both sides of the first side portion (123) corresponding to the two ends of a line forming a diameter in a direction parallel to the upper surface of the first base (124) of the first core receiving portion. The width direction of the first support portion (125) may be parallel to the extension direction extending from the first bottom plate (121) of the first side portion (123) of the first core receiving portion. The length of each first support portion (125) in the direction extending from the first base (124) may be formed to be longer than the radius length of the first core receiving portion. Through this, the first core receiving portion may be spaced apart from the first base (124), and the space between the first side portion (123) of the first core receiving portion, the two first support portions (125), and the first base (124) may form a third hole (127).

[0060] The substrate receiving portion may form an internal space for receiving a substrate (150) in the outer surface direction of the first bottom plate (121) of the first core receiving portion. As shown in FIGS. 6 and 7, the substrate receiving portion may include a third bottom plate (131) corresponding to the shape of the substrate (150) and a third side portion (133) extending from an edge of the third bottom plate (131). The third bottom plate (131) may include a fourth hole (132) corresponding to the first hole of the first bottom plate (121), and may include a fourth side portion (134) extending from an edge of the fourth hole (132) of the third bottom plate (131) as well as the edge of the third bottom plate (131).

[0061] The substrate (150) may have a rectangular plate shape, and the third bottom plate (131) may be formed in a rectangular shape accordingly. In addition, holes may be formed at positions corresponding to the first hole (122) of the first bottom plate (121) and the fourth hole (132) of the third bottom plate (131). At this time, the area of ​​the hole formed in the substrate (150) may be wider than the area of ​​the fourth hole (132) of the third bottom plate (131). When the substrate (150) is placed in the substrate receiving portion, the hole of the substrate (150) must be fitted and coupled so as to be in contact with the outer surface of the fourth side portion (134) of the substrate receiving portion, and the area of ​​the hole of the substrate (150) may be wider than the area of ​​the fourth hole (132) by the thickness of the fourth side portion. The substrate (150) may be fitted and coupled to the substrate receiving portion, as shown in FIG. 8.

[0062] The area along the edge of the third bottom plate (131) may be wider than the area along the edge of the first bottom plate (121). The area along the edge of the third bottom plate (131) may be wider than the area of ​​the space connecting the first bottom plate (121), the two first supports, and the first base (124). The outer surface of the first bottom plate (121) may be a portion of the third bottom plate (131), and may be formed in a plate shape corresponding to the shape of the substrate (150) by extending from the outer surface of the first bottom plate (121) in a direction perpendicular to the outer surface direction of the first bottom plate (121). The center of the first bottom plate (121), the center of the third bottom plate (131), and the center of the substrate (150) may include a first hole (122), a fourth hole (132), and a hole of the substrate (150), which correspond to the hole of the core (110), respectively. Through the above holes, a path can be formed through which the power line can pass through the hole of the core (110).

[0063] The third bottom plate (131) may include a fifth hole (135) corresponding to the third hole (127). Depending on the length of the two first support portions (125), the space between the first side (123) of the first core receiving portion, the two first support portions (125), and the first base (124) may form a third hole (127), and the third bottom plate (131) may also include a fifth hole (135) corresponding to the third hole (127). Since the first bottom plate (121) and the third bottom plate (131) serve as double-sided surfaces, the third hole (127) and the fifth hole (135) may represent the same hole.

[0064] The substrate (150) may be screw-connected to the third bottom plate (131). In the case where a cover covering the substrate receiving portion is not formed, a hole may be formed at a corner of the substrate (150) to secure the substrate (150) and the substrate (150) may be screw-connected to the third bottom plate (131). Alternatively, the substrate (150) may be secured within the substrate receiving portion by various methods other than including a cover or screw-connection.

[0065] The communication module can detect a power line communication signal through a communication line (160) that wraps around the core a predetermined number of times. To this end, the communication line (160) can be formed in a form that connects the communication module and the core (110). At this time, the communication line (160) can be connected to the substrate (150) through the fifth hole (135) of the third bottom plate (131) and can be electrically connected to the communication module through the substrate (150).

[0066] The first core receiving portion may include a sixth hole (128) through which a communication line (160) passes on the first side (123). The sixth hole (128) may be formed through the inner and outer sides of the first core receiving portion on the first side (123) so that the communication line (160) can surround the core (110) received in the first core receiving portion and be connected to a substrate (150) located on the outside of the first core receiving portion.

[0067] The substrate (150) may include a first connector (152) connected to a communication line (160) on a surface exposed through the fifth hole (135). The substrate (150) is exposed toward the sixth hole (128) of the first core receiving portion through the fifth hole (135), and the first connector (152) connected to the communication line (160) may be formed on a surface exposed through the fifth hole (135). The first connector may be formed as a terminal to which the communication line can be connected by soldering, or may be formed in a connector form to which the communication line can be connected. As shown in FIG. 9, the substrate (150) may have the first connector (152) arranged on a surface exposed through the fifth hole (135), and may be connected to a communication line (160) that surrounds the core (110) of the first core receiving portion and is drawn out through the sixth hole (128).

[0068] The first core receiving portion may include a third support portion (129) extending from the first side portion (123) toward the core (110) and supporting the core (110). The third support portion (129) may include a plurality of third support portions (129), and the plurality of third support portions (129) may be spaced apart from each other.

[0069] The third support member (129) not only fixes the position of the core (110) within the first core receiving portion, but also forms a space through which a communication line (160) passes to wrap around the core (110). The third support member (129) may include four third support members, and a communication line that wraps around the core (110) may pass through the space between each of the third support members (129). The communication line may be formed in a form that wraps around the core (110) multiple times, as shown in FIG. 10. For example, the communication line (160) may wrap around the core (110) seven to eight times.

[0070] The second body (140) may include a second base (144), a second support (145), and a second core receiving portion. The second body (140) may be configured as shown in FIGS. 11 and 12.

[0071] The second core receiving portion may include a second bottom plate (141) and a second side portion (143). The second bottom plate (141) may include a second hole (142) in the center and may be formed in a shape corresponding to the shape of the core (110). As shown in Fig. 11, the second bottom plate (141) may be formed in a circular shape. The second side portion (143) may extend from the second bottom plate (141). The second side portion (143) may form a curved surface along the edge of the circular shape of the second bottom plate (141) and may extend.

[0072] The second base (144) is formed in a plate shape and, when combined with the substrate (260) of the inverter module (200), comes into contact with the substrate (260) of the inverter module (200) to support the power line communication module (100). The direction in which the upper surface of the second base (144) faces may be perpendicular to the direction in which the second bottom surface of the second core receiving portion faces.

[0073] The second support portion (145) can support the second core receiving portion while spacing it apart from the second base (144). The second support portion (145) can include two second support portions (145). The two second support portions (145) can be spaced apart from each other and extend upward from the upper surface of the second base (144). The ends of the second support portions (145) can contact the outer surface of the second side portions (143) of the second core receiving portion. The two second support portions (145) can extend upward from the second base (144) so ​​as to contact both sides of the second side portions (143) corresponding to the ends of a line forming a diameter in a direction parallel to the upper surface of the second base (144) of the second core receiving portion. The width direction of the second support portion (145) may be parallel to the extension direction extending from the second bottom plate (141) of the second side portion (143) of the second core receiving portion. The length of each second support portion (145) in the direction extending from the second base (144) may be formed to be longer than the radius length of the second core receiving portion. Through this, the second core receiving portion may be spaced apart from the second base (144), and the space between the second side portion (143) of the second core receiving portion, the two second support portions (145), and the second base (144) may form a third hole (127).

[0074] The center of the second floor plate (141) may include a second hole (142) corresponding to the hole of the core (110). A path through which a power line can pass through the hole of the core (110) may be formed through the third hole (127).

[0075] The second core receiving portion may include a seventh hole (148) through which a communication line (160) passes on the second side (143). The seventh hole (148) of the second side (143) corresponds to the sixth hole (128) of the first side (123) of the first core receiving portion. A sixth hole (128) penetrating the inner and outer sides of the second side (143) of the second core receiving portion may be formed so that the communication line (160) can surround the core (110) received in the second core receiving portion and be connected to a substrate (150) located on the outside of the second core receiving portion.

[0076] The substrate (150) is exposed toward the seventh hole (148) of the second core receiving portion through the fifth hole (135), and the first connector (152) connected to the communication line (160) can be formed on the surface exposed through the fifth hole (135). The first connector can be formed as a terminal to which the communication line can be connected by soldering or the like, or can be formed in the form of a connector to which the communication line can be connected.

[0077] The second core receiving portion may include a fourth support portion (149) extending from the second side portion (143) toward the core (110) and supporting the core (110). The fourth support portion (149) may include a plurality of fourth support portions (149), and the plurality of fourth support portions (149) may be spaced apart from each other.

[0078] The fourth support member (149) not only fixes the position of the core (110) within the second core receiving member, but also forms a space through which a communication line (160) passes to surround the core (110). As shown in Fig. 13, the fourth support member (149) may include four fourth support members, and a communication line that surrounds the core (110) may pass through the space between each of the fourth support members (149).

[0079] The power line communication module (100) can be integrated by combining the first body (120) and the second body (140) so that their respective core receiving portions face each other. To combine the first body (120) and the second body (140), a hook-and-loop coupling method and a fitting coupling method can be used.

[0080] The two second supporting portions (145) may include a catch portion (146) protruding from the opposite surface of the mutually opposing surfaces, and the two first supporting portions (125) may extend from the opposite surface of the mutually opposing surfaces toward the two second supporting portions (145) and include a catch hole (126) corresponding to the catch portion (146). When the first body (120) and the second body (140) are coupled, the catch portion (146) and the catch hole (126) may be hook-coupled.

[0081] As shown in FIG. 4, a hook hole (126) for hook connection is formed at the point where the two first support parts (125) contact the first side part (123), and correspondingly, as shown in FIG. 11, a hook projection (146) for hook connection is formed at the point where the two second support parts (145) contact the second side part (143), so that when the first body (120) and the second body (140) are coupled, the hook projection (146) is positioned in the hook hole (126), thereby preventing the first body (120) and the second body (140) from being separated.

[0082] In addition, the first side (123) of the first core receiving portion may include a coupling groove along a surface in contact with the second side (143), and the second side (143) of the second core receiving portion may include a coupling protrusion corresponding to the coupling groove along a surface in contact with the first side (123). Through this, when the first body (120) and the second body (140) are coupled, the coupling groove and the coupling protrusion can be fitted and coupled. Through this, the coupling of the first body (120) and the second body (140) can be guided, and the first body (120) and the second body (140) can be prevented from being misaligned left and right after coupling.

[0083] Through hook and insert connections, the module can be stably fixed and the core (110) can be stably accommodated.

[0084] When the first body (120) and the second body (140) are combined, the first base (124) and the second base (144) are combined to correspond to each other to form one base, and the combined base can be placed on the substrate (260) of the inverter module (200). The power line communication module (100) according to the embodiment of the present invention can be placed on the substrate (260) of the inverter module (200) as shown in FIG. 14. Through this, the core (110) can be placed in a form that is vertically erected on the substrate (260) of the inverter module (200) so that the power line (270) can pass through it. At this time, in order to pass the power line applied from the MLPE (312), it can be placed at the input terminal of the DC-DC converter (221) or on the side of the wiring box connected to the MLPE (312).

[0085] A single base formed by the first base (124) and the second base (144) can be screw-coupled (280) to the substrate (260) of the inverter module (200). Through this, the power line communication module (100) according to the embodiment of the present invention can be fixed to the substrate (260) of the inverter module (200), thereby simplifying the system.

[0086] The substrate (150) may include a second connector (151) connected to a rapid shutdown switch (RSD switch) of the inverter module (200) or connected to an external power source. When the rapid shutdown switch operates, the communication module may stop operation or power supply from the external power source may be blocked, thereby blocking signal transmission to the MLPE (312) so that the MLPE (312) may perform an RSD operation.

[0087] As described above, by mechanically forming the power line communication module (100), the size of the power line communication module (100) according to the embodiment of the present invention can be reduced to make it miniaturized, and it can be mounted inside the inverter module (200). At this time, the size of the power line communication module (100) according to the embodiment of the present invention can be configured to be, for example, 96x34x80.8 mm.

[0088] FIGS. 15 to 19 are drawings for explaining a power line communication module according to another embodiment of the present invention. In the detailed description of the configuration of the power line communication module (400) of FIGS. 15 to 19, a detailed description of the configuration corresponding to the configuration of the power line communication module (100) of FIGS. 1 to 14 will be omitted.

[0089] A transmission line communication module (400) according to an embodiment of the present invention may be composed of a core (410), a third body (420), a fourth body (440), a communication module (not shown), and a substrate (450). The third body (420) and the fourth body (440) are formed in a shape corresponding to each other, and each body includes a base, a support, and a core receiving portion, wherein the substrate receiving portion may be formed on one surface of the base of the two bodies. The substrate (450) may be arranged parallel to the base, and a groove (430) for fixing the substrate (450) may be formed. At this time, the substrate (450) is formed to be exposed upward, and a communication line (460) may be connected to the substrate (450) through a hole formed on the side of the core receiving portion through the area of ​​the substrate (450) exposed upward. The core receiving portions of the two bodies may include an inner portion (441) extending in a direction facing each other from the edge of the hole, and a support portion (442) supporting the core (410) in a direction from the inner portion (441) toward the core (410). The support portion (442) may include a plurality of support portions, and the plurality of support portions may be spaced apart from each other.

[0090] The support (442) not only fixes the position of the core (410) within the core receiving portion, but also forms a space through which a communication line (460) passes to surround the core (410). The support (442) may include three support lines, and a communication line that surrounds the core (410) may pass through the space between each support line (442).

[0091] The lower portion of the base may include a rail coupling portion (470) that couples with the rails within the inductor module. A groove may be formed extending from the lower portion of each base of the two bodies and facing each other, so that a joint groove may be formed when the two bodies are coupled. The rail coupling portion (470) may be fitted and fixed to the rails of the inductor module.

[0092] The third body (420) and the fourth body (440) can also be firmly fixed by being guided for coupling through hook coupling and insertion coupling and preventing separation after coupling. At this time, the hook jaw and the hook groove for hook coupling can be formed on the outer surface of the side of the core receiving portion.

[0093] At this time, the size of the power line communication module (400) according to the embodiment of the present invention may be configured as, for example, 68x60x88 mm.

[0094] As described above, the power line communication module and RSD switch can be integrated into the inverter module to simplify the rapid shutdown system. The power line communication module can be mechanically assembled within the inverter module and can be assembled or mounted on the DC-DC input terminal within the inverter to minimize signal interference, simplifying the assembly process.

[0095] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. A core including a hole in the center; A communication module that performs power line communication by using a signal of a power line passing through the hole of the above core; A substrate on which the above communication module is placed; A first body including a first core receiving portion for receiving at least a portion of the core and a substrate receiving portion for receiving the substrate; and A power line communication module comprising a second body including a second core receiving portion corresponding to the first core receiving portion and receiving the remaining portion of the core.

2. In paragraph 1, The above first body, A first core receiving portion including a first bottom plate including a first hole in the center and a first side extending from the first bottom plate; 1st base; Two first support members spaced apart from each other, extending upwardly from the upper surface of the first base, and contacting the outer surface of the first side of the first core receiving portion; and It includes a substrate receiving portion that forms an internal space for receiving a substrate in the outer surface direction of the first bottom plate of the first core receiving portion, The above second body, A second core receiving portion including a second bottom plate including a second hole in the center and a second side extending from the second bottom plate; 2nd base; and A power line communication module comprising two second supports, which are spaced apart from each other and extend upward from the upper surface of the second base, contact the outer surface of the second side of the second core receiving portion, and correspond respectively to the two first supports.

3. In paragraph 2, The above first core receiving portion is spaced apart from the base, A power line communication module in which the space between the first core receiving portion, the two first supporting portions, and the base forms a third hole.

4. In paragraph 3, The above substrate receiving portion is, A third floor plate forming a space corresponding to the shape of the substrate and including a fourth hole corresponding to the first hole of the first floor plate; a third side extending from the edge of the third floor plate; and Including a fourth side extending from the edge of the fourth hole of the third floor plate, The above third floor plate, A power line communication module including a fifth hole corresponding to the third hole.

5. In paragraph 4, Including a communication line that wraps the above core a predetermined number of times, The above communication line A power line communication module connected to the substrate through the fifth hole of the third floor plate.

6. In paragraph 5, The above first core receiving portion is, Including a sixth hole through which the communication line passes on the first side, The above second core receiving portion is, A power line communication module including a seventh hole corresponding to the sixth hole and through which the communication line passes on the second side.

7. In paragraph 5, The above substrate is, A power line communication module including a first connector connected to the communication line on a surface exposed through the fifth hole.

8. In paragraph 5, The above first core receiving portion is, A plurality of third support members extending from the first side toward the core and supporting the core, and spaced apart from each other, The above second core receiving portion is, A plurality of fourth support members extending from the second side toward the core, supporting the core, spaced apart from each other, and corresponding to the third support members, A power line communication module in which the communication line is arranged to surround the core through the space between the plurality of third supports and the space between the plurality of fourth supports.

9. In paragraph 2, The above two second supports are, Including a catch portion protruding from the opposite surface of the opposing surface, The above two first supports are, It includes a catch hole that extends from the opposite side of the opposing side toward the two second support parts and corresponds to the catch portion, A power line communication module in which the first body and the second body are connected, and the catch portion and the catch hole are hook-connected.

10. In paragraph 1, A power line communication module in which, when the first body and the second body are combined, the first base and the second base form a third base, and the third base is disposed on the main board of the inverter module.

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