Semiconductor circuit breaker

Abstract

The present invention relates to a semiconductor circuit breaker, and more particularly, to a semiconductor circuit breaker having a detachable interface module. A semiconductor circuit breaker according to an embodiment of the present invention is characterized by including: a circuit breaker main body connected to a main circuit, provided with a module accommodation portion on an external face; and an interface module provided independently of the circuit breaker main body, detachably coupled to the module accommodation portion, the circuit breaker main body including: a terminal cover rotatably coupled to a terminal portion of the circuit breaker main body; and an interlock member provided to the circuit breaker main body to restrict opening of the terminal cover or to release the restriction, the interface module including an interlock driving portion to operate the interlock member.

Description

Technical Field

[0001] This invention relates to semiconductor circuit breakers, and more specifically, to semiconductor circuit breakers having a removable interface module. Background Technology

[0002] Generally, semiconductor circuit breakers are circuit breakers designed to interrupt circuits using power semiconductor components such as MOSFETs and IGBTs. Semiconductor circuit breakers utilize the current-blocking characteristics of power semiconductor components to perform circuit interruption, thus eliminating the need for arc suppression functions during interruption. Therefore, they have the advantage of reducing size by eliminating arc-extinguishing sections. Additionally, they offer the advantage of short arc-breaking time. Conversely, the use of power semiconductor components also leads to increased manufacturing costs in low-capacity circuit breakers.

[0003] Semiconductor circuit breakers are widely used in systems requiring rapid interruption. In the case of conventional mechanical circuit breakers, the interruption speed is approximately several milliseconds to hundreds of milliseconds, while the interruption speed of semiconductor circuit breakers is approximately tens of microseconds, allowing current to be interrupted in a significantly shorter time.

[0004] Therefore, semiconductor circuit breakers are increasingly being used in switchboards with large current capacities, DC systems where fault current increases rapidly, and ESS (Energy Storage System) systems that require stable current supply and interruption. Recently, considering accidents such as fires in ESS systems, the importance of circuit breakers in ensuring a stable current supply while taking into account heat generation has become even more pressing.

[0005] In this type of circuit breaker, a terminal cover is provided to improve the insulation performance of the terminal section.

[0006] exist Figure 1 A perspective view of a prior art wiring circuit breaker with a terminal cover is shown.

[0007] In the prior art circuit breaker 1 for wiring, terminal portions 2 connected to power supply or load are provided on both sides, and terminal covers 3 are provided on each terminal portion 2.

[0008] The terminal cover 3 provided on the terminal section 2 can be used for dust protection, busbar lead-out, or terminal lead-out, depending on the application. Specifically, the dust protection function can seal the terminal section 2 to the maximum extent to prevent dust from entering and maximize phase-to-phase insulation. The busbar lead-out function can open the lower part of the terminal section 2 to allow the busbar (not shown) to be connected to the terminal section 2. The terminal lead-out function can open the terminal section 2 to the middle part to allow the terminal (not shown) to be connected to the terminal section 2.

[0009] The terminal cover 3 has a lead-out portion formed as a groove, and a cover member 4 for leading out a bus or terminal is removably formed on the lead-out portion. The user can remove the cover member 4 from the lead-out portion by forcefully separating or breaking the connection between the lead-out portion and the cover member 4.

[0010] However, as described above, the terminal covers of existing wiring circuit breakers do not employ interlocking. Therefore, they can be accessed arbitrarily, posing a risk of altering the terminals or damaging the insulation.

[0011] In addition, although not shown separately, in a wiring circuit breaker equipped with an interface module, the following permission can be required: the terminal cover can only be opened when the interface module is integrated into the circuit breaker body. Summary of the Invention

[0012] The problem that the invention aims to solve

[0013] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide a semiconductor circuit breaker that realizes the interlocking function of the terminal cover.

[0014] Another objective is to provide a semiconductor circuit breaker having an interface module that is separate from the circuit breaker body and allows operation of the circuit breaker body from the outside, wherein the terminal cover can only be opened when the interface module is attached to the circuit breaker body.

[0015] Technical solutions to the problem

[0016] A semiconductor circuit breaker according to an embodiment of the present invention is characterized by comprising: a circuit breaker body connected to a main circuit and having a module receiving portion disposed on its outer surface; and an interface module configured to be independent of the circuit breaker body and detachably coupled to the module receiving portion. The circuit breaker body includes: a terminal cover rotatably coupled to a terminal portion of the circuit breaker body; and an interlocking member disposed on the circuit breaker body to restrict the opening of the terminal cover or release the restriction. The interface module includes an interlocking drive portion for operating the interlocking member.

[0017] The terminal cover is provided with a rotating part so as to be rotatably attached to the terminal part.

[0018] In addition, a locking bar, which is restricted by the interlocking member, protrudes from the rotating part of the terminal cover.

[0019] In addition, a first return spring is provided in the rotating part of the terminal cover to apply a force in the direction of closing the terminal cover.

[0020] In addition, the interlocking member is rotatably coupled into the circuit breaker body, and a second return spring is provided in the interlocking member to apply force to the interlocking member in the direction of restricting the locking rod.

[0021] Additionally, a hook-on portion for restricting the locking bar protrudes from one end of the interlocking member.

[0022] In addition, the interlock drive unit includes a magnet.

[0023] In addition, the interlocking component includes an interlock release part, which is formed by a magnet and is attracted by the interlocking drive part.

[0024] In addition, a slit-shaped guide hole is formed in the interlocking member, and a guide portion is formed in the circuit breaker body to be inserted into the guide hole, so as to guide the vertical movement of the interlocking member.

[0025] In addition, an interlocking drive portion that presses the interlocking member downward is formed on the protruding part of the interface module.

[0026] In addition, an insertion hole is formed in the module receiving portion for inserting the interlock drive portion.

[0027] In addition, the interlocking member is formed to reach the length of the two terminal covers respectively provided on both sides of the terminal portion of the circuit breaker body.

[0028] In addition, the hook-up portions are formed at both ends of the interlocking member.

[0029] Furthermore, the guide holes are formed in the support portion, and the support portion protrudes from both ends of the interlocking member.

[0030] Invention Effects

[0031] According to an embodiment of the semiconductor circuit breaker, an interlock is applied to the terminal cover disposed on the terminal portion of the circuit breaker body to prevent arbitrary access to the terminal portion.

[0032] Therefore, arbitrary modifications to the terminal section are restricted, and the risk of insulation failure at the terminal section is reduced.

[0033] The terminal cover can only be opened when the interface module is integrated into the circuit breaker body.

[0034] Therefore, the interface module's control over the circuit breaker body is enhanced. Attached Figure Description

[0035] Figure 1 This is a perspective view of a wiring circuit breaker with a terminal cover, based on existing technology.

[0036] Figure 2This is a three-dimensional view showing the circuit breaker body and interface module of the semiconductor circuit breaker according to the first embodiment of the present invention.

[0037] Figure 3 This is a block diagram showing the connection relationship and basic structure of the circuit breaker body, interface module, power supply, and load of the semiconductor circuit breaker according to the first embodiment of the present invention.

[0038] Figure 4 and Figure 5 This is a side view showing the operating state of the semiconductor circuit breaker according to the first embodiment of the present invention. Figure 4 The interface module is shown to be in a detached state. Figure 5 The interface module's connection status is shown.

[0039] Figure 6 and Figure 7 This is a side view of a semiconductor circuit breaker according to a second embodiment of the present invention. Figure 6 The interface module is shown to be in a detached state. Figure 7 The interface module's connection status is shown.

[0040] Figure 8 This is a side view of a semiconductor circuit breaker according to a third embodiment of the present invention, showing the interface module in its coupled state. Detailed Implementation

[0041] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. This is to provide a detailed description to the extent that those skilled in the art can readily implement the invention, and is not intended to limit the technical concept and scope of the invention.

[0042] The semiconductor circuit breakers of various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0043] <First Embodiment>

[0044] Figure 2 This image shows a detached perspective view of the circuit breaker body and interface module of a semiconductor circuit breaker according to a first embodiment of the present invention. Figure 3 A block diagram showing the circuit breaker body, interface module, power supply, and load connection relationship and basic structure of each device of the semiconductor circuit breaker according to the first embodiment of the present invention is provided.

[0045] The semiconductor circuit breaker of the first embodiment of the present invention includes: a circuit breaker body 100 connected to the main circuit; and an interface module 200 independent of the circuit breaker body 100.

[0046] The circuit breaker body 100 has a module receiving portion 110 disposed on the outer surface of the circuit breaker body 100, and the interface module 200 is detachably coupled to the module receiving portion 110.

[0047] The circuit breaker body 100 includes: a terminal cover 300 rotatably coupled to the terminal portions 102 and 103; a locking rod 310 disposed on the terminal cover 300; and an interlocking member 170 disposed on the circuit breaker body 100 to restrict or release the locking rod 310.

[0048] The interface module 200 includes an interlock drive unit 280 that operates the interlock component 170.

[0049] The semiconductor circuit breaker in this embodiment is configured as a circuit breaker body 100 and an interface module 200 (separate configuration).

[0050] The circuit breaker body 100 is connected to the main circuit 400 and the load 900. In the event of an overcurrent or ground fault current between the main circuit 400 and the load 900, the circuit breaker body 100 disconnects to block the main circuit 400, thereby protecting the load 900 and related devices and facilities.

[0051] The circuit breaker body 100 can be installed independently and connected between the main circuit 400 and the load 900. Alternatively, the circuit breaker body 100 can be built into an external device 10 and used as an auxiliary device.

[0052] The interface module 200 is detachably integrated with the circuit breaker body 100. That is, the interface module 200 is independently constructed and can be combined with or separated from the circuit breaker body 100. The circuit breaker body 100 can perform the blocking function (operation) independently, and can also perform the blocking function additionally through the interface module 200. In other words, both the circuit breaker body 100 and the interface module 200 have an operating unit. Furthermore, in addition to the blocking function of the circuit breaker body 100, the interface module 200 can also perform additional functions.

[0053] A module receiving portion 110 is formed in the circuit breaker body 100. The module receiving portion 110 is disposed on the outer surface of the circuit breaker body 100. The module receiving portion 110 is as follows: Figure 2 The groove shown can be formed into a groove with a specified depth. However, it is not limited to this; the module receiving portion 110 can also be formed into a flat plate or a protrusion. That is, although not shown separately, a receiving portion formed into a protrusion can be provided in the circuit breaker body 100, and a groove portion that fits into the receiving portion can be formed in the interface module 200.

[0054] The circuit breaker body 100 is provided with terminal portions 102 and 103, which are composed of a power supply side terminal portion 103 connected to an external power supply 99 and a load side terminal portion 102 connected to a load 900. Terminals are provided in each terminal portion 102 and 103. That is, the load side terminal is exposed in the load side terminal portion 102, and the power supply side terminal is exposed in the power supply side terminal portion 103.

[0055] The circuit breaker body 100 is provided with a handle 105 for manually performing the blocking action by the user. The user can manually operate the circuit breaker body 100.

[0056] A reset button 106 is provided on one side of the handle 105 for reconnecting the circuit breaker after it has tripped due to an emergency current. The reset button 106 provides a reset operation for reconnection after the tripping operation.

[0057] The circuit breaker body 100 is provided with a trip display unit 108 for displaying the trip status.

[0058] The circuit breaker body 100 is externally provided with components for performing blocking and reconnecting operations as described above, allowing it to be used independently. That is, it can perform its functions independently even without connection to the interface module 200. Such functionality can be selectively configured. When the circuit breaker body 100 is used solely as a passive terminal operator, it can be configured to remove the mechanical operating components described above and operate only through the interface module 200. In this case, the manufacturing cost of the circuit breaker body 100 will be reduced.

[0059] The interface module 200 can be formed as a plate or a box with a specified thickness.

[0060] A handle 205 is provided in the interface module 200. The handle 205 is provided for the user to grip the interface module 200 and for easy installation and removal from the circuit breaker body 100. In addition, the handle 205 can be used to adjust the rotation direction of the interface module 200.

[0061] A connecting portion 210 is provided on the back of the interface module 200. The connecting portion 210 provides a connecting force so that the interface module 200 is detachably connected to the circuit breaker body 100 and will not naturally separate during connection. The interface module 200 receives the force of the connecting portion 210, so it will not fall freely even when connected to the circuit breaker body 100 in a standing position, and will not separate from the circuit breaker body 100 when the force is below a specified magnitude.

[0062] As an example of the connection method between the interface module 200 and the circuit breaker body 100, a fitting connection method can be applied. The interface module 200 is provided with a connecting portion 210 to fit into the module receiving portion 110 of the circuit breaker body 100, so it will not naturally detach even when the circuit breaker body 100 is configured in an upright state. Although the illustration shows the module receiving portion 110 as a groove and the connecting portion 210 as a protrusion, as mentioned above, the opposite is also possible.

[0063] As another example of the connection method between the interface module 200 and the circuit breaker body 100, a magnetic force connection method can be applied. A magnet (not shown) can be provided at the connection portion 210 of the interface module 200. Additionally, a magnet 113 is provided at the module receiving portion 110 of the circuit breaker body 100. That is, the module receiving portion 110 is provided with a magnet 113 made of a material that is magnetically connected through the connection portion 210. For example, the magnet 113 can be made of a metallic material.

[0064] Alternatively, the module receiving portion 110 and the connecting portion 210 can be configured in the opposite manner. That is, a magnet is provided in the module receiving portion 110, and a magnet is provided in the connecting portion 210.

[0065] Alternatively, the joint 210 and the magnet 113 may be entirely composed of a structure including a magnet.

[0066] An interlock drive unit 280 is provided in the interface module 200. The interlock drive unit 280 may be provided on one side of the connecting part 210. Alternatively, the interlock drive unit 280 may be included in the connecting part 210. That is, the connecting part 210 can perform the function of the interlock drive unit 280.

[0067] exist Figure 3 In the diagram, the connection relationship of the circuit breaker body 100, interface module 200, power supply 99 and load 900 and the basic composition of each device are shown.

[0068] First, let's describe the circuit breaker body 100.

[0069] A power supply unit 130 is provided in the circuit breaker body 100. The power supply unit 130 supplies power to the various components within the circuit breaker body 100, such as the blocking unit 120.

[0070] The power supply unit 130 can be connected to an external power supply 99 or accept an independent power supply. The power supply unit 130 may include an AC / DC converter or a DC / DC converter.

[0071] A blocking part 120 is provided on the circuit breaker body 100.

[0072] The blocking section 120 is the main contact section that blocks or connects the electrical connection of the main circuit 400. The blocking section 120 is the core component of the semiconductor circuit breaker and is equipped with a power semiconductor element (not shown). As such a power semiconductor element, a MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) or an IGBT (Insulated Gate Bipolar Transistor) can be used.

[0073] The blocking section 120 may include a protection circuit (not shown) connected in parallel with the power semiconductor element to protect the power semiconductor element from the severe voltage generated during switching. Examples of such protection circuits include a snubber circuit or an MOV (Metal Oxide Varistor). For details regarding the configuration or function of the blocking section and protection circuit, please refer to the applicant's application "Bidirectional Semiconductor Circuit Breaker (KR10-2019-0042659)" etc.

[0074] The power supply unit 130 is connected to an external power supply 99 to supply power to the circuit breaker body 100. Additionally, the power supply unit 130 can supply power to the interface module 200. A module power supply unit 230 is provided in the interface module 200.

[0075] The power supply unit 130 can be connected to the module power supply unit 230 of the interface module 200 in a wired or wireless manner to supply power.

[0076] The power supply section 130 of the circuit breaker body 100 and the module power supply section 230 of the interface module 200 are provided with coils for the flow of mutually induced current.

[0077] Therefore, if the interface module 200 is combined with the circuit breaker body 100, power can be supplied to the interface module 200 via wireless charging without the need for a separate wire connection.

[0078] A battery can be provided in the module power supply section 230 of the interface module 200. Therefore, the electricity generated by the induced current can be stored in the battery. Alternatively, instead of using the wireless charging method described above, a battery that stores energy through wired charging can be provided.

[0079] exist Figure 4 The image shows a side view of a semiconductor circuit breaker according to a first embodiment.

[0080] In the semiconductor circuit breaker of the first embodiment of the present invention, as a component of the terminal cover interlock, it includes: a terminal cover 300, which is rotatably coupled to the terminal portions 102 and 103 of the circuit breaker body 100; a locking rod 310 disposed on the terminal cover 300; an interlocking member 170 disposed on the circuit breaker body 100 to restrict or release the locking rod 310; and an interlocking drive unit 280 disposed on the interface module 200 and to operate the interlocking member 170.

[0081] Terminal covers 300 are respectively provided on the terminal portions 102 and 103 of the circuit breaker body 100. The terminal covers 300 are rotatably connected to the terminal portions 102 and 103. That is, the terminal covers 300 are connected to the circuit breaker body 100 via cover shafts 305.

[0082] The terminal cover 300 keeps the terminal portions 102 and 103 closed (sealed) unless external force is applied. Therefore, it prevents arbitrary access to the terminal portions 102 and 103.

[0083] The terminal cover 300 is made of insulating material. Therefore, when the terminal cover 300 is closed, it prevents the insulation of the terminal portions 102 and 103 from being damaged by external electric shock or grounding.

[0084] When viewed from the side, the terminal cover 300 can be formed as follows: The terminal cover 300 is shaped like a letter. That is, the terminal cover 300 includes an upper part 301 and a front part 303. The upper part 301 is closed, and each phase may have a terminal connection groove 304 formed in the front part 303.

[0085] A rotating portion 308 is provided behind the upper part 301 of the terminal cover 300. The rotating portion 308 is formed in a partially rounded shape behind the upper part 301. The rotating portion 308 is inserted into the shaft groove 107 provided in the circuit breaker body 100.

[0086] A rotating shaft 305 is inserted into the rotating part 308. The rotating shaft 305 is inserted into a shaft groove or shaft hole (not shown) in the circuit breaker body 100 so that the terminal cover 300 can rotate.

[0087] A first return spring 312 may be provided on the rotating shaft 305. In this embodiment, the first return spring 312 exerts a force in the direction of closing the terminal cover 300. Therefore, the terminal cover 300 is in the closed state when no external force is applied. Even if the terminal cover 300 is opened by the user, if the external force is removed, the terminal cover 300 will close again under the restoring force of the first return spring 312. The first return spring 312 may be composed of a torsion spring or a coil spring.

[0088] A locking lever 310 is provided on the upper part 301 or the rotating part 308 of the terminal cover 300. A portion of the locking lever 310 may protrude from the upper part 301 or the rotating part 308. A first hooking protrusion may be formed at the end of the locking lever 310.

[0089] An interlocking member 170 is provided. The interlocking member 170 can be disposed inside the circuit breaker body 100. The interlocking member 170 can be formed into a "T" shape. The interlocking member 170 is rotatably disposed on the shaft portion 175.

[0090] A hook-on portion 173 is provided at one end of the interlocking member 170. The rotation of the locking rod 310 is restricted by the hook-on portion 173, and the opening of the terminal cover 300 is restricted.

[0091] In the hook-up portion 173, a second hook-up protrusion may be formed adjacent to the first hook-up protrusion of the locking bar 310.

[0092] At the other end of the interlocking member 170, an interlock release part 177 is provided. The interlock release part 177 may be made of a magnet. Alternatively, the interlock release part 177 may include a magnet.

[0093] A second return spring 180 may be provided in the interlocking member 170. When no external force is applied, the second return spring 180 returns to the direction of the limiting lock rod 310.

[0094] exist Figure 5 The diagram shows the state of the interface module 200.

[0095] If the interface module 200 is incorporated, the interlock drive unit 280 magnetically attracts the interlock member 170. The interlock member 170 rotates clockwise and engages with the interlock drive unit 280, releasing the restriction on the locking lever 310. This allows the user to open the terminal cover 300.

[0096] In short, when the interface module 200 is used, the interlock drive unit 280 rotates and moves the interlock member 170, thus releasing the restriction on the terminal cover 300, allowing the terminal cover 300 to be opened. The user can open the terminal cover 300 as needed to perform operations on the terminal parts 102 and 103.

[0097] <Second Embodiment>

[0098] The semiconductor circuit breaker of the second embodiment will be described. Except for the terminal cover interlocking portion, the semiconductor circuit breaker of the second embodiment follows the semiconductor circuit breaker of the first embodiment. Therefore, detailed descriptions of parts identical to those in the first embodiment will be omitted, and only the other parts will be described. Figure 6 and Figure 7 The image shows a side view of the second embodiment.

[0099] The semiconductor circuit breaker of the second embodiment of the present invention includes: a circuit breaker body 100 connected to a main circuit; and an interface module 200 independent of the circuit breaker body 100. The circuit breaker body 100 has a module receiving portion 110 disposed on the outer surface of the circuit breaker body 100, and the interface module 200 is detachably coupled to the module receiving portion 110. The circuit breaker body 100 includes: a terminal cover 300 rotatably coupled to the terminal portions 102 and 103 of the circuit breaker body 100; a locking rod 310 disposed on the terminal cover 300; an interlocking member 1170 disposed on the circuit breaker body 100 to restrict or release the locking rod 310; and an interlocking drive unit 1280 disposed on the interface module 200 to operate the interlocking member 1170.

[0100] Terminal covers 300 are respectively provided on the terminal portions 102 and 103 of the circuit breaker body 100. The terminal covers 300 are rotatably connected to the terminal portions 102 and 103. That is, the terminal covers 300 are connected to the circuit breaker body 100 via cover shafts 305.

[0101] The terminal cover 300 keeps the terminal portions 102 and 103 closed (sealed) unless external force is applied. Therefore, it prevents arbitrary access to the terminal portions 102 and 103.

[0102] The terminal cover 300 is made of insulating material. Therefore, when the terminal cover 300 is closed, it prevents the insulation of the terminal portions 102 and 103 from being damaged by external electric shock or grounding.

[0103] When viewed from the side, the terminal cover 300 can be formed as follows: The terminal cover 300 is shaped like a letter. That is, the terminal cover 300 includes an upper part 301 and a front part 303. The upper part 301 is closed, and each phase may have a terminal connection groove 304 formed in the front part 303.

[0104] A rotating portion 308 is formed behind the upper part 301 of the terminal cover 300. The rotating portion 308 protrudes in a partially rounded shape behind the upper part 301. The rotating portion 308 is inserted into the shaft groove 107 provided in the circuit breaker body 100.

[0105] A rotating shaft 305 is inserted into the rotating part 308. The rotating shaft 305 is inserted into a shaft groove or shaft hole (not shown) in the circuit breaker body 100 so that the terminal cover 300 can rotate.

[0106] A first return spring 312 may be provided on the rotating shaft 305. In this embodiment, the first return spring 312 exerts a force in the direction of closing the terminal cover 300. Therefore, the terminal cover 300 is in the closed state when no external force is applied. Even if the terminal cover 300 is opened by the user, if the external force is removed, the terminal cover 300 will close again under the restoring force of the first return spring 312. The first return spring 312 may be composed of a torsion spring or a coil spring.

[0107] A locking lever 310 is provided on the upper part 301 or the rotating part 308 of the terminal cover 300. A portion of the locking lever 310 may protrude from the upper part 301 or the rotating part 308. A first hooking protrusion may be formed at the end of the locking lever 310.

[0108] An interlocking member 1170 is provided. The interlocking member 1170 can be disposed inside the circuit breaker body 100. The interlocking member 1170 can be formed into a "T" shape. The interlocking member 1170 is configured to be able to move linearly up and down via the guide part 1175.

[0109] A guide hole 1179 is formed in the interlocking member 1170. The guide hole 1179 is formed into a slit shape with a specified upper and lower length so that the guide part 1175 can be inserted into it for operation.

[0110] The guide portion 1175 protrudes onto a portion of the housing of the circuit breaker body 100 to guide the up-and-down movement of the interlocking member 1170.

[0111] A hook-on portion 1173 is provided at one end of the interlocking member 1170. The rotation of the locking rod 310 is restricted by the hook-on portion 1173, and the opening of the terminal cover 300 is restricted.

[0112] In the hook-up portion 1173, a second hook-up protrusion may be formed adjacent to the first hook-up protrusion of the locking bar 310.

[0113] An interlock release part 1177 is provided at the other end of the interlocking member 1170. The interlock release part 1177 may be constituted by a protruding lever.

[0114] A second return spring 1180 may be provided in the interlocking member 1170. In the absence of external force, the second return spring 1180 acts in the direction that pulls the interlocking member 1170 upwards. The second return spring 1180 may be a helical spring.

[0115] The interface module 200 is provided with an interlock drive unit 1280 that moves the interlock member 1170. The interlock drive unit 1280 is provided on one side of the connecting portion 210. The interlock drive unit 1280 protrudes from one side of the connecting portion 210.

[0116] An insertion hole 119 is formed in the module receiving portion 110 of the circuit breaker body 100, and the insertion hole 119 allows the interlock drive portion 1280 of the interface module 200 to be inserted. When the interface module 200 is attached to the module receiving portion 110, the interlock drive portion 1280 is inserted into the insertion hole 119 to operate the interlock member 1170.

[0117] exist Figure 7 The state of the interface module 200 is shown.

[0118] When the interface module 200 is attached, the interlock drive unit 1280 presses the interlock release part 1177 of the interlock member 1170 to resist the force of the second return spring 1180 and move the interlock member 1170 downward. As the interlock member 1170 moves downward, the hook part 1173 also moves downward, thus releasing the restriction on the locking lever 310 of the terminal cover 300. Therefore, the terminal cover 300 can be opened by the user.

[0119] In short, when the interface module 200 is attached, the interlock drive unit 1280 moves the interlock member 1170 downward, thereby releasing the restriction on the terminal cover 300 and allowing the terminal cover 300 to be opened. The user can open the terminal cover 300 as needed to perform operations on the terminal sections 102 and 103.

[0120] <Third Embodiment>

[0121] The semiconductor circuit breaker of the third embodiment will be described. Except for the terminal cover interlocking portion, the semiconductor circuit breaker of the third embodiment follows the semiconductor circuit breaker of the second embodiment. Therefore, detailed descriptions of parts identical to those in the second embodiment will be omitted, and only the other parts will be described. Figure 8 A side view of the third embodiment is shown.

[0122] The semiconductor circuit breaker of the third embodiment of the present invention includes: a circuit breaker body 100 connected to a main circuit; and an interface module 200 independent of the circuit breaker body 100. The circuit breaker body 100 has a module receiving portion 110 disposed on the outer surface of the circuit breaker body 100, and the interface module 200 is detachably coupled to the module receiving portion 110. The circuit breaker body 100 includes: a terminal cover 300 rotatably coupled to the terminal portions 102 and 103 of the circuit breaker body 100; a locking rod 310 disposed on the terminal cover 300; an interlocking member 2170 disposed on the circuit breaker body 100 to restrict or release the locking rod 310; and an interlocking drive unit 2280 disposed on the interface module 200 to operate the interlocking member 2170.

[0123] Terminal covers 300 are respectively provided on the terminal portions 102 and 103 of the circuit breaker body 100. The terminal covers 300 are rotatably connected to the terminal portions 102 and 103. That is, the terminal covers 300 are connected to the circuit breaker body 100 via cover shafts 305.

[0124] The terminal cover 300 keeps the terminal portions 102 and 103 closed (sealed) unless external force is applied. Therefore, it prevents arbitrary access to the terminal portions 102 and 103.

[0125] The terminal cover 300 is made of insulating material. Therefore, when the terminal cover 300 is closed, it prevents the insulation of the terminal portions 102 and 103 from being damaged by external electric shock or grounding.

[0126] When viewed from the side, the terminal cover 300 can be formed as follows: The terminal cover 300 is shaped like a letter. That is, the terminal cover 300 includes an upper part 301 and a front part 303. The upper part 301 is closed, and each phase may have a terminal connection groove 304 formed in the front part 303.

[0127] A rotating portion 308 is provided behind the upper part 301 of the terminal cover 300. The rotating portion 308 is formed in a partially rounded shape behind the upper part 301. The rotating portion 308 is inserted into the shaft groove 107 provided in the circuit breaker body 100.

[0128] A rotating shaft 305 is inserted into the rotating part 308. The rotating shaft 305 is inserted into a shaft groove or shaft hole (not shown) in the circuit breaker body 100 so that the terminal cover 300 can rotate.

[0129] A first return spring 312 may be provided on the rotating shaft 305. In this embodiment, the first return spring 312 exerts a force in the direction of closing the terminal cover 300. Therefore, the terminal cover 300 is in the closed state when no external force is applied. Even if the terminal cover 300 is opened by the user, if the external force is removed, the terminal cover 300 will close again under the restoring force of the first return spring 312. The first return spring 312 may be composed of a torsion spring or a coil spring.

[0130] A locking lever 310 is provided on the upper part 301 or the rotating part 308 of the terminal cover 300. A portion of the locking lever 310 may protrude from the upper part 301 or the rotating part 308. A first hooking protrusion may be formed at the end of the locking lever 310.

[0131] An interlocking component 2170 is provided. The interlocking component 2170 can be disposed inside the circuit breaker body 100. The interlocking component 2170 can be formed as follows: The shape is shaped like a character. The interlocking member 2170 is configured to move vertically in a straight line via the guide part 2175.

[0132] The interlocking member 2170 is formed to reach the length of the terminal cover 300 of the terminal portions 102 and 103 on both sides. The support portions 2171 of the interlocking member 2170 are formed at both ends.

[0133] Guide holes 2179 are formed on the support portions 2171 on both sides of the interlocking member 2170. The guide holes 2179 are formed into slits of a specified length above and below, so that the guide portion 1175 can be inserted into them for operation.

[0134] The guide portion 2175 protrudes into part of the housing of the circuit breaker body 100 and guides the up-and-down movement of the interlocking member 2170.

[0135] At both ends of the interlocking member 2170, there are hook parts 2173. The rotation of the locking rod 310 is restricted by the hook parts 2173, and the opening of the terminal cover 300 is restricted.

[0136] In the hook-on portion 2173, a second hook-on protrusion may be formed adjacent to the first hook-on protrusion of the locking bar 310.

[0137] An interlock release part 2177 is provided in the middle part of the interlock member 2170. The interlock release part 2177 may be part of the main body of the interlock member 2170.

[0138] A second return spring 2180 may be provided in the interlocking member 2170. The second return spring 2180 may be provided in the support portion 2171. In the absence of external force, the second return spring 2180 acts in the direction of pulling the interlocking member 2170 upward. The second return spring 2180 may be composed of a helical spring.

[0139] The interface module 200 is provided with an interlock drive unit 2280 that moves the interlock member 2170. The interlock drive unit 2280 is provided on one side of the connecting portion 210. The interlock drive unit 2280 protrudes from one side of the connecting portion 210.

[0140] An insertion hole 119 is formed in the module receiving portion 110 of the circuit breaker body 100, and the insertion hole 119 allows the interlock drive portion 2280 of the interface module 200 to be inserted. When the interface module 200 is attached to the module receiving portion 110, the interlock drive portion 2280 is inserted into the insertion hole 119, and the interlock member 2170 is operated.

[0141] exist Figure 8 The state of the interface module 200 is shown.

[0142] If the interface module 200 is attached, the interlock drive unit 2280 presses the interlock release part 2177 of the interlock member 2170 to resist the force of the second return spring 2180 and move the interlock member 2170 downward. If the interlock member 2170 moves downward, the restriction on the locking lever 310 of the terminal cover 300 is released. Therefore, the user can open the terminal cover 300. At this time, the terminal covers 300 of the terminal portions 102 and 103 on both sides are simultaneously released.

[0143] According to an embodiment of the semiconductor circuit breaker of the present invention, an interlock is applied to the terminal cover provided on the terminal portion of the circuit breaker body to prevent arbitrary access to the terminal portion.

[0144] Therefore, arbitrary modifications to the terminal section are restricted, reducing the risk of insulation failure at the terminal section.

[0145] The terminal cover can only be opened when the interface module is attached to the circuit breaker body.

[0146] Therefore, the interface module enhances the control over the circuit breaker body.

[0147] The embodiments described above are examples of implementing the present invention. Those skilled in the art can make various modifications and variations without departing from the essential characteristics of the invention. Therefore, the embodiments disclosed in this invention are not intended to limit the technical concept of the invention, but rather to illustrate it, and the scope of the technical concept of the invention is not limited by these embodiments. That is, the scope of protection of the present invention should be interpreted according to the following claims, and should be interpreted as including all technical concepts within the equivalent scope of the claims within the scope of the present invention.

Claims

1. A semiconductor circuit breaker, characterized in that, include: The circuit breaker body, connected to the main circuit, has a module housing on its external surface; and The interface module is configured to be independent of the circuit breaker body and detachably integrated into the module housing. The circuit breaker body includes: Terminal cover, attached to the terminal portion of the circuit breaker body; and An interlocking component is provided on the circuit breaker body to restrict or release the opening of the terminal cover. The interface module includes: An interlock drive unit causes the interlocking component to operate.

2. The semiconductor circuit breaker according to claim 1, characterized in that, The terminal cover is provided with a rotating part so as to be rotatably attached to the terminal part.

3. The semiconductor circuit breaker according to claim 1, characterized in that, A locking bar, which is restricted by the interlocking member, protrudes from the rotating portion of the terminal cover.

4. The semiconductor circuit breaker according to claim 1, characterized in that, A first return spring is provided in the rotating part of the terminal cover to apply a force in the direction of closing the terminal cover.

5. The semiconductor circuit breaker according to claim 3, characterized in that, The interlocking component is rotatably coupled into the circuit breaker body. A second return spring is provided on the interlocking member to apply force to the interlocking member in the direction that restricts the locking rod.

6. The semiconductor circuit breaker according to claim 5, characterized in that, A hook-on portion for restricting the locking rod is formed at one end of the interlocking member.

7. The semiconductor circuit breaker according to claim 1, characterized in that, The interlock drive unit includes a magnet.

8. The semiconductor circuit breaker according to claim 7, characterized in that, The interlocking component includes an interlock release part, which is formed by a magnet and is attracted by the interlocking drive part.

9. The semiconductor circuit breaker according to claim 6, characterized in that, The interlocking member has a guide hole in the shape of a slit in the vertical direction. The circuit breaker body has a protruding guide portion that is inserted into the guide hole to guide the vertical movement of the interlocking component.

10. The semiconductor circuit breaker according to claim 9, characterized in that, An interlocking drive portion is formed on the protruding part of the interface module to press the interlocking member downward.

11. The semiconductor circuit breaker according to claim 10, characterized in that, An insertion hole is formed in the module receiving portion for inserting the interlock drive portion.

12. The semiconductor circuit breaker according to claim 9, characterized in that, The interlocking member is configured to achieve the length of the distance between the two terminal covers respectively disposed on the two side terminal portions of the circuit breaker body.

13. The semiconductor circuit breaker according to claim 12, characterized in that, The connecting parts are formed at both ends of the interlocking member.

14. The semiconductor circuit breaker according to claim 12, characterized in that, The guide holes are formed in the support portion, and the support portion protrudes from both ends of the interlocking member.

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