Leakage current detection transformer, installation assembly thereof and power electronic controller

Abstract

The utility model provides a leakage current detection transformer, a mounting assembly thereof and a power electronic controller. The leakage current detection transformer comprises a shell, a magnetic ring and a connecting line assembly, the magnetic ring and the connecting line assembly are both arranged in the shell, the connecting line assembly comprises a signal line and a plurality of paths of first power lines, and at least one part of the signal line and at least one part of the plurality of paths of first power lines penetrate through the magnetic ring; the shell is provided with a mounting surface, and the pins of the connecting wire assembly penetrate through the holes in the mounting surface and are electrically connected with the connecting plate, so that the conduction of a circuit in the connecting wire assembly is realized. According to the configuration, the magnetic ring and the connecting wire assembly are arranged in the shell, and the connecting wire assembly penetrates through the magnetic ring, so that the integrated design of the leakage current detection transformer is realized; meanwhile, the pins of the connecting wire assembly penetrate through the holes in the mounting surface and are connected with the connecting plate, so that an operator does not need to additionally use fixing glue to fix the magnetic ring, the mounting cost is reduced, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to a leakage current detection transformer and a mounting component thereof, and a power electronic controller. Background Art

[0002] In power electronic products, leakage current detection transformer is a commonly used safety electronic device. Please refer to Figure 1 to Figure 2 The existing installation method of the leakage current detection transformer usually requires the signal line of the high-voltage connector and the two power lines to pass through the magnetic ring. During the installation process, the magnetic ring may wear the line, and the magnetic ring itself also needs to be fixed by gluing. At the same time, a signal line needs to be led out from the side wall of the magnetic ring. The above-mentioned power line and signal line need to be plugged into the PCB board. This results in a large number of lines during the installation process, and the available installation space is small, which is easy to cause line wear and plugging errors, affecting work efficiency.

[0003] Based on this, how to properly fix the magnetic ring in a small installation space to avoid wear on the circuit, while also simplifying the installation method and avoiding incorrect plugging of signal lines has become a technical problem that technical personnel in this field need to solve. Utility Model Content

[0004] The utility model aims to provide a leakage current detection transformer and its installation assembly, and a power electronic controller, so as to solve the problems that the existing leakage current detection transformer is complicated to install, the magnetic ring and the connector power line passing through it wear each other, and the numerous signal lines are easy to be plugged wrong.

[0005] In order to achieve the above object, the utility model provides a leakage current detection transformer, including: a housing, a magnetic ring and a connecting wire assembly;

[0006] The magnetic ring and the connecting wire assembly are both arranged inside the shell;

[0007] The connecting line assembly includes a signal line and a plurality of first power lines, and at least a portion of the signal line and the plurality of first power lines passes through the magnetic ring;

[0008] The housing has a mounting surface, and pins of the connecting wire assembly pass through openings on the mounting surface and are electrically connected to the connecting board to achieve conduction of the circuits in the connecting wire assembly.

[0009] Optionally, at least a portion of the signal line is wound around the magnetic ring and / or at least a portion of each first power line is wound around the magnetic ring.

[0010] Optionally, the pins are inserted into the interior of the connecting plate and are welded to the connecting plate.

[0011] Optionally, a plurality of the first power lines pass through the magnetic ring to form a plurality of power signals, and the signal line passes through the magnetic ring to transmit the plurality of the power signals to the outside.

[0012] Optionally, the signal line and each of the first power lines are provided with input pins and output pins, and the input pins and the output pins are passed through the openings on the mounting surface in a one-to-one correspondence and connected to the connecting board.

[0013] In order to achieve the above object, the utility model also provides a mounting assembly for a leakage current detection transformer, comprising: a connector, a connection plate and the leakage current detection transformer as described above;

[0014] The connector includes a connector signal line, which is plugged into the connection board and electrically connected to the connection board for transmitting the signal received by the connector to the first power line in the leakage current detection transformer through the connection board.

[0015] Optionally, the connector has a second power line, the second power line is connected to the connecting plate via a screw, and the connector is connected to the leakage current detection transformer via the second power line.

[0016] In order to achieve the above object, the utility model also provides a power electronic controller, including the installation assembly of the leakage current detection transformer as described above.

[0017] Compared with the existing leakage current detection transformer, the leakage current detection transformer and its installation assembly and power electronic controller provided by the present application have the following advantages:

[0018] The leakage current detection transformer provided by the present application realizes the integrated design of the leakage current detection transformer by arranging the magnetic ring and the connecting wire assembly in the shell, and passing the connecting wire assembly through the magnetic ring (through or winding); at the same time, the pins of the connecting wire assembly are passed through the openings on the mounting surface and electrically connected to the connecting plate, so that the operator does not need to use additional fixing glue to fix the magnetic ring, thereby reducing the installation cost and improving the installation efficiency. Further, the connecting wire assembly includes a signal line and a plurality of first power lines, and the signal line and the pins of each first power line are correspondingly passed through the openings on the mounting surface, and the pins are inserted into the interior of the connecting plate and welded to the connecting plate to realize the conduction of the line; at the same time, the operator no longer needs to distinguish between the connector signal line and the leakage current detection transformer signal line, thereby reducing the difficulty of installation; in addition, the connector power line (i.e., the second power line) in this embodiment does not need to be passed through the magnetic ring, thereby avoiding the mutual wear between the magnetic ring and the connector power line in the prior art, thereby extending the service life of the magnetic ring.

[0019] The installation assembly of the leakage current detection transformer provided by the present application is used to transmit the signal to the first power line in the leakage current detection transformer through the connection board by plugging the connector signal line into the connection board. Compared with the installation assembly of the leakage current detection transformer in the prior art, the connector signal line in the present application is directly plugged into the connection board, and the signal line and the multi-channel first power line in the leakage current detection transformer are welded and connected to the connection board through pins, which reduces the probability of the operator plugging in the wrong way during the process of plugging in the connector signal line, the signal line and the first power line, and also simplifies the installation method of the leakage current detection transformer and improves the installation efficiency. Furthermore, the second power line on the connector is connected to the connection board by screws, so that the power line and signal line of the connector and the leakage current detection transformer are connected to the connection board in different ways, further reducing the probability of plugging errors, and no additional fixing glue is needed to fix the magnetic ring, thereby reducing the production cost. At the same time, the second power line is connected to the connection board by screws, and no longer needs to be inserted into the magnetic ring, which reduces the wear of the magnetic ring and extends the service life of the magnetic ring.

[0020] The power electronic controller provided in the present application uses the above-mentioned installation assembly of the leakage current detection transformer, which simplifies the installation method of the leakage current detection transformer, reduces the probability of incorrect connection of the power cord and the signal cord, and improves the installation efficiency; at the same time, it reduces the use of fixing glue, and avoids mutual wear between the magnetic ring and the second power cord of the connector, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A diagram showing the connection relationship between a magnetic ring and a connector in the prior art;

[0022] Figure 2 It is a schematic diagram of the installation of a leakage current detection transformer in the prior art;

[0023] Figure 3 A schematic diagram of the structure of a leakage current detection transformer provided by an embodiment of the utility model;

[0024] Figure 4 A bottom view of a leakage current detection transformer provided by an embodiment of the utility model;

[0025] Figure 5 A cross-sectional view of a first leakage current detection transformer provided by an embodiment of the utility model;

[0026] Figure 6 A cross-sectional view of a second leakage current detection transformer provided by an embodiment of the utility model;

[0027] Figure 7 A cross-sectional view of a third leakage current detection transformer provided by an embodiment of the utility model;

[0028] Figure 8 A schematic diagram of the structure of the installation assembly of the leakage current detection transformer provided in an embodiment of the utility model;

[0029] Fig. 9 A schematic diagram of the installation assembly of the leakage current detection transformer provided by the embodiment of the utility model;

[0030] The description of each reference numeral is as follows:

[0031] 10-housing; 110-mounting surface;

[0032] 20-connecting line assembly; 210-signal line; 220-first power line;

[0033] 30-magnetic ring; 40-connecting plate;

[0034] 50-pin; 510-input pin; 520-output pin;

[0035] 60-connector; 610-second power line; 620-connector signal line;

[0036] 70-leakage current detection transformer signal line; 80-high voltage signal line. DETAILED DESCRIPTION

[0037] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0038] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used to include the meaning of "and / or", the term "several" is generally used to include the meaning of "at least one", and the term "at least two" is generally used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which include not only the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in this specification, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element may be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative position relationships arranged in the direction of gravity; the terms "vertical, vertical direction" generally refer to the direction of gravity, which is generally perpendicular to the ground, and "horizontal, horizontal plane direction" generally refers to the direction parallel to the ground; for ordinary technicians in this field, the specific meanings of the above terms in this specification can be understood according to specific circumstances.

[0039] The utility model aims to provide a leakage current detection transformer and its installation assembly, and a power electronic controller, so as to solve the problems that the existing leakage current detection transformer is complicated to install, the magnetic ring and the connector power line passing through it wear each other, and the numerous signal lines are easy to be plugged wrong.

[0040] As can be understood by those skilled in the art, leakage current refers to the current formed between electrically insulated live parts, grounded parts and metals through the surrounding medium in the absence of external pressure and equipment failure. Leakage current is one of the important parameters for the safety performance of electronic and electrical products, which is used to evaluate the safety factor of electrical products. The existence of leakage current reduces the safety factor of electronic products and even creates potential safety risks for customers. When detecting leakage current, the main thing is to check whether the input and output currents of the neutral and live wires are consistent. If the input and output currents are inconsistent after comparison, there is leakage current. Among them, the leakage current detection transformer is a device that converts the measured AC microcurrent and DC isolation into linearly proportional DC current, DC voltage and other standard analog signals or digital signals based on the working principle of electromagnetic isolation and magnetic modulation of the mutual inductor. It is widely used in DC transmission, power storage detection, DC screen, power supply, large medical and health equipment, wind power generation, communication base stations and other fields to avoid the occurrence of safety accidents and ensure the safe use and production operations of related equipment. In the automotive field, due to the limited installation space, the leakage current detection transformer must be installed through the magnetic ring to function, so there are problems such as magnetic ring wear circuit, signal line (including leakage current detection transformer signal line 70 and high-voltage signal line 80) accumulation and easy insertion error (such as Figure 1 to Figure 2 Based on this, the present embodiment provides a leakage current detection transformer and its installation assembly, and a power electronic controller. By forming an integrated design of the leakage current detection transformer, the connection relationship between the magnetic ring and the circuit is improved, the wear of the magnetic ring on the circuit is reduced, and it is also convenient for operators to sort out different circuits, prevent the problem of wrong signal line insertion, and effectively improve the installation efficiency.

[0041] Please refer to Figures 3 to 7The utility model provides a leakage current detection transformer, including: a shell 10, a magnetic ring 30 and a connecting wire assembly 20; the magnetic ring 30 and the connecting wire assembly 20 are both arranged inside the shell 10, and the connecting wire assembly 20 includes a signal line 210 and a plurality of first power lines 220, and at least a part of the signal line 210 and the plurality of first power lines 220 passes through the magnetic ring 30; the shell 10 has a mounting surface 110, and the pins 50 of the connecting wire assembly 20 are arranged in openings on the mounting surface 110 (not shown in the figure) and are electrically connected to the connecting plate 40 to achieve conduction of the circuits in the connecting wire assembly 20. It should be noted that in this embodiment, the connecting board 40 is a PCB board, the pins 50 of the connecting wire assembly 20 pass through the openings on the mounting surface 110, the pins 50 are inserted into the interior of the connecting board 40, and are welded to the connecting board 40 to complete the conduction of the circuit, wherein the mounting surface 110 is in contact with the connecting board 40, but is not connected to the connecting board 40, and the housing 10 is fixed in relative position only by welding the pins 50 to the connecting board 40. Of course, in other embodiments, the connecting board 40 and the housing 10 can also be connected by snapping or other reasonable methods, and the mounting surface 110 can also be fixedly connected to the connecting board 40, which is not limited in this embodiment. At the same time, the connecting line assembly 20 includes multiple lines, which may mainly include a first power line 220 and a signal line 210. Each line only needs to pass through the magnetic ring 30. It can be passed through the magnetic ring 30 only once, or it can be passed back and forth in the magnetic ring 30, or the line can be partially passed through the magnetic ring 30. Multiple lines can adopt the same passing method or different passing methods. Technical personnel in this field can select a suitable passing method according to the size of the shell 10 and the size of the installation space, and this embodiment does not limit this.

[0042] With such a configuration, by arranging the magnetic ring 30 and the connecting wire assembly 20 in the shell 10, and passing the connecting wire assembly 20 through the magnetic ring 30 (through or winding), an integrated design of the leakage current detection transformer is achieved; at the same time, the pin 50 of the connecting wire assembly 20 passes through the opening on the mounting surface 110, and is connected to the connecting plate 40, so that the operator does not need to use additional fixing glue to fix the magnetic ring 30, thereby reducing the installation cost and improving the installation efficiency; in addition, the connector power cord (i.e., the second power cord 610) in this embodiment is connected to the connecting plate 40 by screws, and no longer needs to be passed through the magnetic ring 30, thereby avoiding mutual wear between the magnetic ring 30 and the connector power cord in the existing installation method, and extending the service life of the magnetic ring 30.

[0043] In an alternative embodiment, please refer to Figures 5 to 7 , at least a portion of the signal line 210 is wound around the magnetic ring 30, and / or at least a portion of each first power line 220 is wound around the magnetic ring 30. Figures 5 to 7, the connection relationship between the connecting wire assembly 20 and the magnetic ring 30 is further explained.

[0044] As an alternative embodiment, please refer to Figure 5 , at least a portion of the signal line 210 is passed through the magnetic ring 30, and at least a portion of each first power line 220 is passed through the magnetic ring 30. It should be noted that the signal line 210 and the multiple first power lines 220 are both passed through the magnetic ring 30, which means that the signal line 210 and each of the multiple first power lines 220 are passed through the magnetic ring 30 at least once. Considering that the signal line 210 and the first power line 220 can also be wound around the magnetic ring 30, therefore, in this application document, the connection method in which the number of times of passing through the magnetic ring 30 is less than or equal to twice is called passing, and the connection method in which the number of times of passing through the magnetic ring 30 is greater than twice is called winding.

[0045] As another alternative embodiment, please refer to Figure 6 , at least a portion of the signal line 210 is wound around the magnetic ring 30, and at least a portion of each first power line 220 is wound around the magnetic ring 30. It should be noted that in this embodiment, the signal line 210 and the multiple first power lines 220 are connected to the magnetic ring 30 in a winding manner, and each of the signal line 210 and the multiple first power lines 220 is wound around the outer wall of the magnetic ring 30 to form a multi-turn winding, and the number of turns of each winding can be the same or different, and those skilled in the art can configure the number of turns according to the length of the line.

[0046] As another alternative embodiment, please refer to Figure 7 , at least a portion of the signal line 210 is passed through the magnetic ring 30, and at least a portion of each first power line 220 is wound around the magnetic ring 30; or, at least a portion of the signal line 210 is wound around the magnetic ring 30, and at least a portion of each first power line 220 is passed through the magnetic ring 30. It should be noted that in this embodiment, one of the signal line 210 and the first power line 220 is passed through, and the other is wound. The operator can distinguish the signal line 210 and the first power line 220 by the connection method, so as to avoid the problem of misalignment of the connection. In other embodiments, the operator can also use different connection methods in multiple first power lines 220 to distinguish them, and this embodiment does not limit this.

[0047] exist Figures 5 to 7In the different connection modes between the connecting wire assembly 20 and the magnetic ring 30 shown, the multiple first power lines 220 are passed through or wound around the magnetic ring 30 and form multiple power signals respectively, and the signal line 210 is passed through or wound around the magnetic ring 30 and transmits the multiple power signals to the outside to realize the leakage current detection function. When the power signals generated by the multiple first power lines 220 in a group are different, it can be determined that there is leakage current in the line. At the same time, in the above Figures 5 to 7 In the different connection methods shown, the same connecting line (signal line 210 or first power line 220) can also be partially passed through the magnetic ring 30 and partially wrapped around the magnetic ring 30. Technical personnel in this field can reasonably configure the connection method between the connecting line assembly 20 and the magnetic ring 30 according to the length of the line and the size of the installation space.

[0048] Please refer to Figure 3 to Figure 4 The signal line 210 and each first power line 220 are provided with an input pin 510 and an output pin 520, which are correspondingly passed through the openings on the mounting surface 110 and connected to the connecting board 40. It should be noted that each connecting line is provided with an input pin 510 and an output pin 520, which are located at the ends of the connecting line, respectively pass through the openings on the mounting surface 110, and are connected to the connecting board 40 by welding, and the pin 50 passes through the insulating layer on the surface of the connecting board 40 and is inserted into the inside of the connecting board 40, thereby realizing the conduction of the entire circuit.

[0049] In another embodiment, please refer to Figures 8 to 9 The utility model also provides an installation component of a leakage current detection transformer, including: a connector 60, a connecting plate 40 and the leakage current detection transformer as described above; the connector 60 includes a connector signal line 620, the connector signal line 620 is plugged into the connecting plate 40, and is electrically connected to the connecting plate 40, and is used to transmit the signal received by the connector 60 to the first power line 220 in the leakage current detection transformer through the connecting plate 40. It should be noted that the connector signal line 620 is plugged into the edge of the connecting plate 40. Compared with the existing installation method, this embodiment integrates the connecting line assembly 20 and the magnetic ring 30 in the shell 10, and the pin 50 of the connecting line assembly 20 passes through the opening of the mounting surface 110 of the shell 10, is plugged into the connecting plate 40 and is welded to the connecting plate 40, while the connector signal line 620 of the connector 60 is directly plugged into the connecting plate 40. When the operator is docking the connector signal line 620 and the pin 50 of the connecting line assembly 20, it can avoid plugging errors, and it also simplifies the installation method of the leakage current detection transformer and improves the installation efficiency.

[0050] Furthermore, the connector 60 also includes a second power line 610, and the second power line 610 is connected to the connecting plate 40 by screws, and the connector 60 is connected to the leakage current detection transformer by the second power line 610. With such a configuration, in this embodiment, the connector 60 and the signal line and the power line of the leakage current detection transformer are connected to the connecting plate 40 in different ways, which further reduces the probability of the operator inserting the wrong signal line and the power line in the process of plugging in the signal line and the power line, and no additional fixing glue is needed to fix the magnetic ring 30, thereby reducing the production cost. At the same time, the second power line 610 is connected to the connecting plate 40 by screws, and no longer needs to be inserted into the magnetic ring 30, which avoids mutual wear between the magnetic ring 30 and the second power line 610 during installation and use, and prolongs the service life of the magnetic ring 30.

[0051] In another embodiment, the utility model also provides a power electronic controller, including the installation assembly of the leakage current detection transformer as described above. It should be noted that the leakage current measurement transformer has certain rigid requirements for the use standards of all electrical equipment. It is an indispensable and important component in the DC system. It is widely used in vehicle-related fields such as DC power transmission, power storage detection, power supply, and charging piles for electric vehicles. It can also be used in other fields such as DC screens, medical and health equipment, photovoltaics, sharp power generation, and communication base stations. It can provide feedback on the leakage of the equipment in the first time, reducing damage to the equipment and normal production operations. In this application, the installation assembly of the leakage current detection transformer is used on the power electronic controller, which simplifies the installation method of the leakage current detection transformer, reduces the probability of incorrect plugging of the power cord and the signal line, and improves the installation efficiency; at the same time, it reduces the use of fixing glue, and avoids mutual wear between the magnetic ring 30 and the second power cord 610, reducing production costs.

[0052] In summary, in the leakage current detection transformer and its mounting assembly, and the power electronic controller provided in the embodiments of the utility model, the leakage current detection transformer includes: a shell, a magnetic ring, and a connecting wire assembly; the magnetic ring and the connecting wire assembly are both arranged inside the shell; the connecting wire assembly includes a signal line and a plurality of first power lines, and at least a portion of the signal line and the plurality of first power lines pass through the magnetic ring; the shell has a mounting surface, and the pins of the connecting wire assembly pass through openings on the mounting surface and are electrically connected to the connecting plate to achieve conduction of the lines in the connecting wire assembly.

[0053] With such configuration, by setting the magnetic ring and the connecting wire assembly in the shell, and passing the connecting wire assembly through the magnetic ring (through or winding), the integrated design of the leakage current detection transformer is realized; at the same time, the pins of the connecting wire assembly are passed through the openings on the mounting surface and connected to the connecting plate, so that the operator does not need to use additional fixing glue to fix the magnetic ring, which reduces the installation cost and improves the installation efficiency. Further, the connecting wire assembly includes a signal line and multiple first power lines, and the signal line and the pins of each first power line are correspondingly passed through the openings on the mounting surface. By inserting the pins into the interior of the connecting plate and welding the connecting plate, the circuit is connected; at the same time, the operator no longer needs to distinguish between the connector signal line and the leakage current detection transformer signal line, which reduces the difficulty of installation; in addition, the connector power line (i.e., the second power line) in this embodiment does not need to be passed through the magnetic ring, which also avoids the mutual wear between the magnetic ring and the connector power line in the prior art, and prolongs the service life of the magnetic ring.

[0054] Furthermore, by plugging the connector signal line into the connecting plate, the signal is transmitted to the first power line in the leakage current detection transformer through the connecting plate. Compared with the installation assembly of the leakage current detection transformer in the prior art, the connector signal line in the present application is directly plugged into the connecting plate, while the signal line and the multi-channel first power line in the leakage current detection transformer are welded to the connecting plate through pins, which reduces the probability of operators plugging in the wrong way when plugging in the connector signal line, the signal line and the first power line, and also simplifies the installation method of the leakage current detection transformer and improves the installation efficiency. Furthermore, the second power line on the connector is connected to the connecting plate by screws, so that the power line and signal line of the connector and the leakage current detection transformer are connected to the connecting plate in different ways, further reducing the probability of plugging errors, and no longer needing to use additional fixing glue to fix the magnetic ring, reducing production costs. At the same time, the second power line is connected to the connecting plate by screws, and no longer needs to be inserted into the magnetic ring, which reduces the wear of the magnetic ring and extends the service life of the magnetic ring.

[0055] Furthermore, by using the above-mentioned installation assembly of the leakage current detection transformer on the power electronic controller, the installation method of the leakage current detection transformer is simplified, the probability of incorrect connection of the power cord and the signal cord is reduced, and the installation efficiency is improved; at the same time, the use of fixing glue is reduced, and the mutual wear between the magnetic ring and the second power cord of the connector is avoided, thereby reducing the production cost.

[0056] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A leakage current detection transformer, characterized in that: include: Shell, magnetic ring, connecting plate and connecting wire assembly; The magnetic ring and the connecting wire assembly are both arranged inside the shell; The connecting line assembly includes a signal line and a plurality of first power lines, and at least a portion of the signal line and the plurality of first power lines passes through the magnetic ring; The housing has a mounting surface, and pins of the connecting wire assembly pass through openings on the mounting surface and are electrically connected to the connecting board to achieve conduction of the circuits in the connecting wire assembly.

2. The leakage current detection transformer according to claim 1, characterized in that: At least a portion of the signal line is wound around the magnetic ring and / or at least a portion of each first power line is wound around the magnetic ring.

3. The leakage current detection transformer according to claim 1, characterized in that: The pins are inserted into the interior of the connecting plate and are connected to the connecting plate by welding.

4. The leakage current detection transformer according to any one of claims 1 or 2, characterized in that: A plurality of the first power lines pass through the magnetic ring to form a plurality of power signals, and the signal line passes through the magnetic ring to transmit the plurality of the power signals to the outside.

5. The leakage current detection transformer according to any one of claims 1 to 3, characterized in that: The signal line and each of the first power lines are provided with input pins and output pins, and the input pins and the output pins are passed through the openings on the mounting surface in a one-to-one correspondence and connected to the connecting board.

6. A mounting assembly for a leakage current detection transformer, characterized in that: include: A connector, a connecting plate and a leakage current detection transformer as claimed in any one of claims 1 to 5; The connector includes a connector signal line, which is plugged into the connection board and electrically connected to the connection board for transmitting the signal received by the connector to the first power line in the leakage current detection transformer through the connection board.

7. The installation assembly of the leakage current detection transformer according to claim 6, characterized in that: The connector also includes a second power line, which is connected to the connection board via a screw, and the connector is connected to the leakage current detection transformer via the second power line.

8. A power electronic controller, characterized in that: A mounting assembly comprising a leakage current detection transformer as claimed in any one of claims 6 to 7.

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