An intelligent molded case circuit breaker with broadband power line carrier communication function

Abstract

The present invention discloses an intelligent molded case circuit breaker with broadband power line carrier communication function, comprising: a circuit breaker housing, a communication module, a display and control circuit device and at least one contact system; wherein the circuit breaker housing comprises a base, a middle cover and a face cover arranged in sequence from bottom to top; the middle cover comprises a first assembly slot arranged on one side thereof and with an opening facing the face cover; the communication module is arranged in the first assembly slot and is adjacent to the face cover; the display and control circuit device is arranged between the base and the middle cover; each group of the contact systems comprises a moving contact and a static contact used in conjunction with each other, and a contact shaft pivotally arranged on the circuit breaker housing and used to assemble the moving contact, the contact shaft being used to rotate when the circuit breaker trips due to an overload or short circuit fault or when the circuit breaker is closed or opened, thereby triggering the sensor module to operate. The present invention has a more compact structure and a smaller volume; it has good isolation protection and can avoid the risk of electric shock when the user opens the cover for maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and more particularly to an intelligent molded case circuit breaker with a broadband power line carrier communication function. Background Art

[0002] With the development of the national power ubiquitous Internet of Things, the development and construction of smart distribution areas are becoming more and more rapid. Among them, intelligent molded case circuit breakers are key distribution components in smart areas.

[0003] Existing intelligent molded case circuit breakers often have the following problems:

[0004] First of all, intelligent circuit breaker products need to have multiple information transmission and control functions on the basis of protection functions. In some cases, they must also meet customers' requirements for directly replacing external modules such as communication modules. When multiple functions are required, the size of the circuit breaker product will inevitably increase, making the product unable to be used in relatively small distribution boxes.

[0005] Second, the existing intelligent molded case circuit breaker uploads the closing and opening status and fault alarm status of the circuit breaker to the intelligent distribution terminal (TTU) through an auxiliary accessory. The auxiliary accessory is assembled in the cavity of the middle cover. However, due to the large size of the auxiliary accessory, it occupies the side slot of the middle cover. Therefore, when the intelligent molded case circuit breaker needs to be connected to the HPLC communication module or RS485 communication module, it needs to be hung on the side of the intelligent molded case circuit breaker, resulting in a large size of the circuit breaker. In addition, the communication module is connected to the circuit breaker body through a wiring harness, which affects the appearance and reliability of the connection.

[0006] Third, the controller of the existing intelligent molded case circuit breaker is generally arranged in an inverted L-shaped structure, which requires a large installation space and often squeezes the space used for assembling accessories. In addition, the LCD panel of the controller is embedded in the cover and connected to the controller through internal leads, which is not convenient for maintenance.

[0007] Finally, when users open the panel of existing intelligent molded case circuit breakers to install accessories such as HPLC modules or shunt / undervoltage releases, electric shock accidents are prone to occur due to the exposed components of the controller. Summary of the Invention

[0008] The present invention proposes an intelligent molded case circuit breaker with a broadband power line carrier communication function to solve the problem of how to design a circuit breaker with a compact structure and a small size.

[0009] In order to solve the above problems, according to one aspect of the present invention, an intelligent molded case circuit breaker with broadband power line carrier communication function is provided, wherein the circuit breaker comprises: a circuit breaker housing, a communication module, a display and control circuit device and at least one contact system; wherein,

[0010] The circuit breaker housing includes a base, a middle cover and a surface cover arranged in sequence from bottom to top; the middle cover includes a first assembly groove arranged on one side thereof and with an opening facing the surface cover;

[0011] The communication module is connected to the display and control circuit device, and the communication module is a broadband power line carrier communication HPLC module. The communication module is arranged in the first assembly slot and adjacent to the cover; the display and control circuit device is arranged between the base and the middle cover;

[0012] Each set of the contact system includes a moving contact and a stationary contact that are used in conjunction with each other, and a contact shaft that is pivotally arranged on the circuit breaker housing and is used to assemble the moving contact. The contact shaft is used to rotate when the circuit breaker trips due to overload or short circuit fault or when the circuit breaker is closed or opened, thereby triggering the sensor module to operate.

[0013] Preferably, the display and control circuit device includes: a first plug-in terminal arranged at one end of the first assembly slot, the first plug-in terminal is connected to the sensor module through a wire group, and the communication module blocks the wire group after being assembled into the first assembly slot.

[0014] Preferably, the display and control circuit device further includes: a second plug-in terminal that is plugged into the communication module, the second plug-in terminal is arranged on one side of the first plug-in terminal and is located between the communication module and the first plug-in terminal, and the first plug-in terminal and the second plug-in terminal are arranged on the side wall of the same end of the first assembly slot; the plug-in direction of the wire group and the first plug-in terminal is parallel to the face cover, and the plug-in direction of the second plug-in terminal and the communication module is perpendicular to the face cover.

[0015] Preferably, the wire group includes: a first wire group for connecting the alarm sensor and the first plug terminal and / or a second wire group for connecting the opening and closing sensor and the first plug terminal.

[0016] Preferably, the display and control circuit device further comprises: an external communication interface, a power communication terminal and a circuit board assembly, wherein the circuit board assembly comprises: a communication and liquid crystal display circuit board, a control circuit board, a metering circuit board and a power supply unit;

[0017] Among them, the external communication interface, the power communication terminal 602 and the second plug-in terminal are arranged on the communication and liquid crystal display circuit board; the first plug-in terminal is arranged on the metering circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal, the metering circuit board and the control circuit board connected in sequence; or, the first plug-in terminal is directly arranged on the control circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal; the external circuit is electrically connected to the power supply module through the power communication terminal.

[0018] Preferably, the communication module comprises: a module base, a communication module circuit board assembly, a module cover and a communication module plug-in terminal;

[0019] In which, the communication module circuit board assembly is arranged in the module base; the communication module circuit board assembly is provided with the signal conversion circuit, or is also provided with a power supply step-down unit, the power supply unit is connected to the signal conversion circuit to provide working power for the external circuit, or the power supply unit is connected to the signal conversion circuit through the power supply step-down unit to provide working power for the external circuit.

[0020] Preferably, the display and control circuit device further comprises: a circuit board bracket disposed between the base and the middle cover; the circuit board bracket comprises: a bracket bottom plate and a circuit board assembly cavity and a second support arm respectively disposed at both ends of the bracket bottom plate;

[0021] Among them, the side wall of the circuit board assembly cavity away from and opposite to the second support arm is the first support arm; both ends of the communication and liquid crystal display circuit board and both ends of the control circuit board are respectively limited by the first support arm and the second support arm, and the metering circuit board and the power supply unit are arranged in the circuit board assembly cavity.

[0022] Preferably, the circuit board assembly cavity is an L-shaped structure, one end of which protrudes toward the first assembly groove and forms a plug-in terminal assembly groove for accommodating the first plug-in terminal.

[0023] Preferably, the circuit breaker further comprises: a magnetic flux release and a release cover, the release cover is arranged on the bracket bottom plate and located between the circuit board assembly cavity and the second support arm, and the magnetic flux release is arranged in the release cover.

[0024] Preferably, the contact shaft includes: a first shaft boss and a second shaft boss respectively located on both sides of the moving contact; the sensor module is a micro switch; the first shaft boss and the second shaft boss cooperate with the sensor module to trigger the sensor module to operate.

[0025] Preferably, the sensor module includes: an alarm sensor and / or a switch-on / off sensor;

[0026] In which, the alarm sensor and / or the opening and closing sensor are arranged at the bottom of the first assembly slot. When the circuit breaker trips due to overload or short circuit fault, the contact shaft rotates, triggering the alarm sensor to send an alarm signal; when the circuit breaker is closed or opened, the contact shaft rotates, triggering the opening and closing sensor to send a closing or opening signal.

[0027] Preferably, the circuit breaker further comprises: an operating mechanism driven and connected to the contact system; the middle cover further comprises a second assembly slot provided on one side thereof with its opening facing the face cover; the first assembly slot and the second assembly slot are respectively provided on both sides of the operating mechanism; the handle of the operating mechanism passes through the middle cover and the face cover in sequence for user operation; the display and control circuit device is provided on one side of the first assembly slot, the operating mechanism, and the second assembly slot.

[0028] The present invention provides an intelligent molded case circuit breaker, comprising: a circuit breaker housing, a communication module, a display and control circuit device, and at least one contact system; wherein the circuit breaker housing comprises a base, a middle cover, and a face cover arranged in sequence from bottom to top; the middle cover comprises a first assembly slot arranged on one side thereof and with an opening facing the face cover; the communication module is arranged in the first assembly slot and adjacent to the face cover; the display and control circuit device is arranged between the base and the middle cover; each contact system comprises a moving contact and a stationary contact used in conjunction with each other, and a contact shaft pivotally arranged on the circuit breaker housing and used to assemble the moving contact, the contact shaft being used to rotate when the circuit breaker trips due to an overload or short circuit fault or when the circuit breaker is closed or opened, thereby triggering the operation of the sensor module. The present invention integrates the communication module into the circuit breaker, resulting in an aesthetically pleasing product with reliable connection, a more compact structure, and a smaller size. The circuit breaker is compatible with multiple communication modes, allowing users to choose freely, facilitating on-site use and enabling plug-and-play operation. The display and control circuit devices are placed inside the cover, providing excellent isolation protection and avoiding the risk of electric shock when users open the cover for repair, maintenance, or live installation of accessories such as shunts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] A more complete understanding of exemplary embodiments of the present invention may be obtained by referring to the following drawings:

[0030] Figure 1 2 is a schematic structural diagram of an intelligent molded case circuit breaker 100 with broadband power line carrier communication function according to an embodiment of the present invention;

[0031] Figure 2 A diagram showing the assembly relationship between the first assembly slot, the second assembly slot, and the alarm sensor, the opening and closing sensor, and the communication module in the first assembly slot according to an embodiment of the present invention;

[0032] Figure 3 According to an embodiment of the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0033] Figure 4 is a schematic structural diagram of a circuit breaker with a cover removed according to an embodiment of the present invention;

[0034] Figure 5 According to an embodiment of the present invention Figure 4A schematic diagram of the enlarged structure of part B;

[0035] Figure 6 is an assembly relationship diagram of a display and control circuit device and a base according to an embodiment of the present invention;

[0036] Figure 7 is a schematic diagram of an exploded structure of a circuit breaker according to an embodiment of the present invention;

[0037] Figure 8 is a schematic structural diagram of a contact system according to an embodiment of the present invention;

[0038] Figure 9 A diagram showing the coordination relationship between the contact shaft, the alarm sensor, and the opening and closing sensor according to an embodiment of the present invention;

[0039] Figure 10 2 is a schematic structural diagram of a circuit board assembly of a communication and control circuit device according to an embodiment of the present invention;

[0040] Figure 11 is a schematic structural diagram of a mounting bracket according to an embodiment of the present invention;

[0041] Figure 12 is a structural diagram of a communication and control circuit device according to an embodiment of the present invention;

[0042] Figure 13 FIG. 4 is a schematic diagram of the decomposed structure of a communication module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments shown in the accompanying drawings is not intended to limit the present invention. In the accompanying drawings, identical elements are denoted by the same reference numerals.

[0044] Unless otherwise specified, the terms used herein (including technical terms) have the meanings commonly understood by those skilled in the art. In addition, it is understood that terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0045] Figure 1 FIG is a structural diagram of an intelligent molded case circuit breaker 100 with broadband power line carrier communication function according to an embodiment of the present invention. Figure 1As shown, the intelligent molded case circuit breaker provided by the embodiment of the present invention has a communication module built into the circuit breaker, which is beautiful and has reliable connections, a more compact structure, and a smaller size. The circuit breaker is compatible with multiple communication methods, allowing users to choose, facilitating on-site use and achieving plug-and-play. The display and control circuit device is placed inside the cover, providing excellent isolation and protection, and can avoid the risk of electric shock when users open the cover for repair, maintenance, or live installation of accessories such as shunts. The intelligent molded case circuit breaker 100 with broadband power line carrier communication function provided by the embodiment of the present invention includes: a circuit breaker housing, a communication module, a display and control circuit device, and at least one contact system.

[0046] Preferably, the circuit breaker housing includes a base, a middle cover and a face cover arranged in sequence from bottom to top; the middle cover includes a first assembly slot arranged on one side thereof and with an opening facing the face cover; the communication module is connected to the display and control circuit device, and the communication module is a broadband power line carrier communication HPLC module, and the communication module is arranged in the first assembly slot and is adjacent to the face cover; the display and control circuit device is arranged between the base and the middle cover; each group of the contact system includes a moving contact and a static contact used in conjunction with each other, and a contact shaft pivotally arranged on the circuit breaker housing and used to assemble the moving contact, and the contact shaft is used to rotate when the circuit breaker trips due to overload or short circuit fault or when the circuit breaker is closed or opened, thereby triggering the sensor module to work.

[0047] Preferably, the sensor module includes: an alarm sensor and / or a switch-on / off sensor;

[0048] In which, the alarm sensor and / or the opening and closing sensor are arranged at the bottom of the first assembly slot. When the circuit breaker trips due to overload or short circuit fault, the contact shaft rotates, triggering the alarm sensor to send an alarm signal; when the circuit breaker is closed or opened, the contact shaft rotates, triggering the opening and closing sensor to send a closing or opening signal.

[0049] like Figure 2 、 4As shown in Figures 7 and 8, the intelligent molded case circuit breaker according to an embodiment of the present invention includes a circuit breaker housing 431, a communication module 2, a display and control circuit device 6, an alarm sensor 9 and / or an opening and closing sensor 10, and at least one contact system disposed within the circuit breaker housing 431. The contact system includes a moving contact and a static contact for use in conjunction with each other, and a contact shaft pivotally disposed on the circuit breaker housing 431 and used to mount the moving contact; the alarm sensor 9 and / or the opening and closing sensor 10 are respectively engaged with the contact shaft; and the communication module 2, the alarm sensor 9 and / or the opening and closing sensor 10 are respectively connected to the display and control circuit device 6 for communication. The display and control circuit device 6 is located in front of the operating mechanism and between the base 4 and the middle cover 3. The alarm sensor 9 and the opening and closing sensor 10 are spaced side by side at the bottom of the first assembly slot 30. The communication module 2 is disposed above the alarm sensor 9 and the opening and closing sensor 10 and below the face cover 1.

[0050] like Figure 2 As shown, the circuit breaker housing 431 includes a base 4, a middle cover 3, and a face cover 1 that fit together in sequence. The middle cover 3 includes a first assembly slot 30 arranged on one side thereof and with an opening facing the face cover 1. The alarm sensor 9 and / or the opening and closing sensor 10 are arranged at the bottom of the first assembly slot 30. The communication module 2 is arranged in the first assembly slot 30 and is adjacent to the face cover 1. The alarm sensor 9 and the opening and closing sensor 10 are both arranged at the bottom of the first assembly slot 30, reserving sufficient assembly space for the communication module 2 so that the communication module 2 does not need to be hung on the side of the intelligent molded case circuit breaker. The display and control circuit device 6 is arranged between the base 4 and the middle cover 3, which is conducive to the isolation and protection of the display and control circuit device 6. Moreover, when the face cover 1 is removed to repair or maintain the intelligent molded case circuit breaker, the display and control circuit device 6 is prevented from being directly exposed to the user, which may cause electric shock. The alarm sensor 9 and the opening and closing sensor 10 are fixed to the bottom of the first mounting groove 30 by two parallel mounting shafts 11. Two assembly holes are provided at the bottom of the first mounting groove 30, which are used to insert the alarm sensor 9 and the opening and closing sensor 10 respectively. The first mounting groove 30 also includes a first limiting wall 302 and a second limiting wall 303 respectively arranged on both sides of the alarm sensor 9. The first limiting wall 302 is located between the alarm sensor 9 and the opening and closing sensor 10. Each mounting shaft 11 passes through the first limiting wall 302 and one end passes through the alarm sensor 9 and is inserted into the second limiting wall 303, and the other end is plugged into and limited with the opening and closing sensor 10. Each mounting shaft 11 is provided with a retaining spring 12 located on the first limiting wall 302 and the alarm sensor 9. The mounting shaft 11 and the retaining spring 12 ensure that the alarm sensor 9 and the opening and closing sensor 10 are reliably installed and limited in the first mounting groove 30.

[0051] like Figure 2-5As shown, the base 4, the middle cover 3 and the surface cover 1 are arranged in sequence from bottom to top, and the base 4 is divided into multiple pole chambers (for example, 3 pole chambers or 4 pole chambers), each pole chamber is provided with a contact system, each contact system is linked to each other, and the operating mechanism is connected to the contact system of one pole (for example, Figure 6 and 7 As shown, the operating mechanism is connected to the middle contact system drive), the handle of the operating mechanism passes through the middle cover 3 and the surface cover 1 in sequence for user operation; Figure 2 In the direction shown, the side of the drawing facing the reader is the upper side of the circuit breaker, the side away from the reader is the lower side of the circuit breaker, the left and right sides of the drawing are the left and right sides of the circuit breaker respectively, and the lower and upper sides of the drawing are the front and rear sides of the circuit breaker respectively. The operating mechanism is arranged in the middle of the middle cover 3, and the first assembly groove 30 and the second assembly groove 31 are respectively located on the right and left sides of the operating mechanism.

[0052] Preferably, the display and control circuit device includes: a first plug-in terminal arranged at one end of the first assembly slot, the first plug-in terminal is connected to the sensor module through a wire group, and the communication module blocks the wire group after being assembled into the first assembly slot.

[0053] Preferably, the display and control circuit device further includes: a second plug-in terminal that is plugged into the communication module, the second plug-in terminal is arranged on one side of the first plug-in terminal and is located between the communication module and the first plug-in terminal, and the first plug-in terminal and the second plug-in terminal are arranged on the side wall of the same end of the first assembly slot; the plug-in direction of the wire group and the first plug-in terminal is parallel to the face cover, and the plug-in direction of the second plug-in terminal and the communication module is perpendicular to the face cover.

[0054] Preferably, the wire group includes: a first wire group for connecting the alarm sensor and the first plug terminal and / or a second wire group for connecting the opening and closing sensor and the first plug terminal.

[0055] Preferably, the display and control circuit device further comprises: an external communication interface, a power communication terminal and a circuit board assembly, wherein the circuit board assembly comprises: a communication and liquid crystal display circuit board, a control circuit board, a metering circuit board and a power supply unit;

[0056] Among them, the external communication interface, the power communication terminal 602 and the second plug-in terminal are arranged on the communication and liquid crystal display circuit board; the first plug-in terminal is arranged on the metering circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal, the metering circuit board and the control circuit board connected in sequence; or, the first plug-in terminal is directly arranged on the control circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal; the external circuit is electrically connected to the power supply module through the power communication terminal.

[0057] like Figure 4 and 4 As shown, the display and control circuit device 6 includes a first plug-in terminal 604 disposed at one end of the first assembly slot 30. The alarm sensor 9 and / or the opening and closing sensor 10 are connected to the first plug-in terminal 604 via a wire assembly. After the communication module 2 is assembled into the first assembly slot 30, the wire assembly is shielded. When the user removes the cover 1, the wire assembly is prevented from being exposed, thereby improving the safety of the intelligent molded case circuit breaker.

[0058] like Figure 3-4 As shown, the display and control circuit device 6 further includes: a second plug-in terminal 603 that is plugged into and mated with the communication module 2. The second plug-in terminal 603 is arranged on one side of the first plug-in terminal 604 and is located between the communication module 2 and the first plug-in terminal 604. The first plug-in terminal 604 and the second plug-in terminal 603 are arranged on the side wall of the same end of the first assembly slot 30. The plug-in direction of the wire group and the first plug-in terminal 604 is parallel to the cover 1, and the plug-in direction of the second plug-in terminal 603 and the communication module 2 is perpendicular to the cover 1. The second plug-in terminal 603 is arranged on one side of the first plug-in terminal 604 and is located between the communication module 2 and the first plug-in terminal 604. The first plug-in terminal 604 and the second plug-in terminal are both arranged on the side wall of the same end of the first assembly slot 30, which is conducive to making the structure more compact. Moreover, since the plug-in directions of the first plug-in terminal 604 and the second plug-in terminal 603 are perpendicular to each other, although the two are close in position, sufficient insulation distance is still ensured between them. The communication module 2 is arranged in the first assembly groove 30 and is plugged into the second plug-in terminal 603 of the display and control circuit device 6. First, it is beneficial to reduce the overall width of the intelligent molded case circuit breaker. The assembly of the communication module 2 and the communication and display circuit device 6 is more convenient. The two do not need to be connected by wires, and the connection reliability is higher.

[0059] like Figure 10As shown, the display and control circuit device 6 is disposed between the base 4 and the middle cover 3 and further includes a circuit board assembly comprising a communication and LCD display circuit board 605, a control circuit board 606, a metering circuit board 607, and a power module 608, which are sequentially disposed between the base 4 and the middle cover 3. The first plug-in terminal 604 is disposed on the metering circuit board 607, and the alarm sensor 9 and / or the tripping and closing sensor 10 are communicatively connected to the control circuit board 606 via the first plug-in terminal 604 and the metering circuit board 607, which are sequentially connected. Alternatively, the first plug-in terminal 604 is disposed directly on the control circuit board 606, and the alarm sensor 9 and / or the tripping and closing sensor 10 are communicatively connected to the control circuit board 606 via the first plug-in terminal 604. The metering circuit board 607 is equipped with a metering chip, which performs functions including timekeeping, electricity metering, energy and time storage, and communication with the management chip. The control circuit board 606 is equipped with a control chip, which performs management functions such as fault monitoring and communication.

[0060] like Figure 10 As shown, the display and control circuit device 6 also includes: a power communication terminal 602 provided on the circuit board assembly, and the external circuit is electrically connected to the power module 608 of the display and control circuit device 6 through the power communication terminal. The communication module 2 is an HPLC module, and the HPLC module is connected to the station area communication through the second plug-in terminal 603, the circuit board assembly, the power communication terminal 602, and the external circuit connected in sequence. The display and control circuit device 6 also includes an external communication interface 601 provided on the communication and display circuit board 605 of the display and control circuit device 6, and the external communication interface 601 is an RS485 interface or a serial port or a CAN interface; the communication module 2, the power communication terminal 602, and the external communication interface 601 enable the intelligent molded case circuit breaker of the present invention to be compatible with multiple communication methods, allowing users to choose by themselves, which is convenient for on-site use.

[0061] The flexibility of the structural design of the display and control circuit device 6 of the present invention allows users to select the device according to actual needs to meet different working conditions and usage requirements.

[0062] In an embodiment of the present invention, the display and control circuit device 6 further includes a power supply communication terminal 602 provided on a communication and liquid crystal display circuit board 605, through which the external circuit is electrically connected to the power supply module 608. Furthermore, the communication module 2 is an HPLC module, which is communicatively connected to the substation (substation refers to the communication network within the power supply range or area of ​​a transformer) via a second plug-in terminal 603, a communication and liquid crystal display circuit board 605, a power supply communication terminal 602, and an external circuit.

[0063] Further, such as Figure 6 、 9 As shown in FIG. 11 , the display and control circuit device 6 further includes an external communication interface 601 provided on a communication and liquid crystal display circuit board 605. The external communication interface 601 is an RS485 interface, a serial port, or a CAN interface. Specifically, Figure 10 and 11 As shown, the external communication interface 601 is arranged at the upper left end of the communication and liquid crystal display circuit board 605, the power communication terminal 602 is located between the communication and liquid crystal display circuit board 605 and the control circuit board 606 and is arranged on the communication and liquid crystal display circuit board 605, the first plug terminal 604 is arranged on the right end of the control circuit board 606 or on the right end of the metering circuit board 607, and the second plug terminal 603 is located above the first plug terminal 604 and is arranged on the control circuit board 606.

[0064] Preferably, the communication module comprises: a module base, a communication module circuit board assembly, a module cover and a communication module plug-in terminal;

[0065] In which, the communication module circuit board assembly is arranged in the module base; the communication module circuit board assembly is provided with the signal conversion circuit, or is also provided with a power supply step-down unit, the power supply unit is connected to the signal conversion circuit to provide working power for the external circuit, or the power supply unit is connected to the signal conversion circuit through the power supply step-down unit to provide working power for the external circuit.

[0066] like Figure 13 As shown, the communication module 2 includes a module base 201 and a module cover 203 that work together, as well as a communication module circuit board assembly 202 disposed within the module base 201. The communication module circuit board assembly 202 is provided with the signal conversion circuit, or with the signal conversion circuit and a power step-down unit. The communication module 2 includes the signal conversion circuit, and the power supply unit 608 is connected to the signal conversion circuit to provide operating power for it; alternatively, the communication module 2 also includes a power step-down unit, and an external circuit is connected to the signal conversion circuit via the power step-down unit to provide operating power for it. The communication module circuit board assembly 202 also includes a communication module plug-in terminal 204 that plugs into and mates with the second plug-in terminal 603. The module base 201 is an inverted convex structure with an open upper end that is snap-fitted with the module cover 203. The communication module circuit board assembly 202 is arranged in the space formed by the module base 201 and the module cover 203. A communication module plug-in terminal 204 is provided at the right end, which passes through the bottom wall of the right end of the module base 201 and is plug-fitted with the second plug-in terminal 603 of the display and control circuit device 6.

[0067] Preferably, the display and control circuit device further comprises: a circuit board bracket disposed between the base and the middle cover; the circuit board bracket comprises: a bracket bottom plate and a circuit board assembly cavity and a second support arm respectively disposed at both ends of the bracket bottom plate;

[0068] Among them, the side wall of the circuit board assembly cavity away from and opposite to the second support arm is the first support arm; both ends of the communication and liquid crystal display circuit board and both ends of the control circuit board are respectively limited by the first support arm and the second support arm, and the metering circuit board and the power supply unit are arranged in the circuit board assembly cavity.

[0069] Preferably, the circuit board assembly cavity is an L-shaped structure, one end of which protrudes toward the first assembly groove and forms a plug-in terminal assembly groove for accommodating the first plug-in terminal.

[0070] Preferably, the circuit breaker further comprises: a magnetic flux release and a release cover, the release cover is arranged on the bracket bottom plate and located between the circuit board assembly cavity and the second support arm, and the magnetic flux release is arranged in the release cover.

[0071] like Figure 11 As shown, the display and control circuit device 6 further includes a circuit board support 5 disposed between the base 4 and the middle cover 3. The circuit board support 5 comprises a support base 5a, a circuit board mounting cavity 50 disposed at each end of the support base 5a, and a second support arm 502. The sidewall of the circuit board mounting cavity 50, facing away from and opposite the second support arm 502, is a first support arm 501. Both ends of the communication and LCD circuit board 605 and both ends of the control circuit board 606 are respectively engaged with the first support arm 501 and the second support arm 502. The metering circuit board 607 and the power module 608 are disposed within the circuit board mounting cavity 50. The circuit board mounting cavity 50 is L-shaped, with one end protruding toward the first mounting groove 30 and forming a plug-in terminal mounting groove 505 for accommodating the first plug-in terminal 604.

[0072] like Figure 11 and 12 As shown, the circuit board assembly cavity 50 is an L-shaped structure, one end of which protrudes toward the first assembly groove 30 and forms a plug-in terminal assembly groove 505 for accommodating the first plug-in terminal 604 of the display and control circuit device 6. Figure 10-11As shown, both ends of the communication and liquid crystal display circuit board 605 are provided with a first limiting boss 605a, and the upper ends of the first support arm 501 and the second support arm 502 are provided with a first limiting hole that cooperates with the first limiting boss 605a; one end of the power supply module 608 and the metering circuit board 607 are both abutted against the side wall of the circuit board assembly cavity 50 opposite to the first support arm 501, and the other end is provided with a first limiting groove 611, and the inner side of the first support arm 501 is provided with a second limiting boss 501a that cooperates with the first limiting groove 611; one end of the control circuit board 606 is abutted against the second support arm 502, and the other end is provided with a first limiting groove 611 that cooperates with the second limiting boss 501a. Furthermore, one end of the bracket base plate 5a provided with the first support arm 501 is further provided with a mounting limit platform 503a, and the other end is provided with a fixing hole 506, through which the fixing screw 8 fixes the bracket base plate 5a to the base 4. A mounting limit groove 503 is provided on one side wall of the base 4, and the mounting limit platform 503a is limitedly matched with the mounting limit groove 503. Specifically, as Figure 11 In the direction shown, the left and right ends of the bracket base plate 5a are respectively provided with a second support arm 502 and a circuit board assembly cavity 50, the right side wall of the circuit board assembly cavity 50 is a first support arm 501, and a second limiting boss 501a is provided on the left side of the first support arm 501. The upper ends of the first support arm 501 and the second support arm 502 are both provided with a first limiting hole, and the right end of the circuit board assembly cavity 50 protrudes upward to form a plug-in terminal assembly groove 505. The right end of the bracket base plate 5a is also provided with an installation limit platform (not shown in the figure), and the left end is provided with a plurality of fixing holes 506; Figure 10 In the direction shown, the communication and liquid crystal display circuit board 605 is provided with a first limiting boss 605a at both ends, and the right ends of the control circuit board 606, the metering circuit board 607, and the power module 608 are provided with a first limiting groove 611; Figure 10 As shown, the first limiting bosses 605a at both ends of the communication and liquid crystal display circuit board 605 are respectively limited and matched with the first limiting holes of the first support arm 501 and the second support arm 502; the left ends of the metering circuit board 607 and the power module 608 are both against the left side wall of the circuit board assembly cavity 50, and the first limiting grooves 611 at the right ends are both limited and matched with the second limiting boss 501a; the left end of the control circuit board 606 is against the second support arm 502, and the first limiting groove 611 at the right end is limited and matched with the second limiting boss 501a.

[0073] like Figure 6 、 10 As shown in FIG11 , the intelligent molded case circuit breaker of the present invention further includes a magnetic flux release 150 and a release cover 7. The release cover 7 is arranged on the bracket bottom plate 5a and is located between the circuit board assembly cavity 50 and the second support arm 502. The magnetic flux release 150 is arranged in the release cover 7 and cooperates with the operating mechanism. Figure 6 As shown, the lower end of the release cover 7 is provided with a cover card hole 701, and the bracket bottom plate 5a is provided with a bottom plate clamping platform 504. The release cover 7 is inverted on the bracket bottom plate 5a and is fixedly connected to the bracket bottom plate 5a through the limiting cooperation of the cover card hole 701 and the bottom plate clamping platform 504.

[0074] Preferably, the contact shaft includes: a first shaft boss and a second shaft boss respectively located on both sides of the moving contact; the sensor module is a micro switch; the first shaft boss and the second shaft boss cooperate with the sensor module to trigger the sensor module to operate.

[0075] like Figure 8 As shown, the contact shaft 13 includes a first shaft boss 1310 and a second shaft boss 1311 located on both sides of the moving contact, respectively. The alarm sensor 9 and the opening and closing sensor 10 are both micro switches, and the first shaft boss 1310 and the second shaft boss 1311 cooperate with the opening and closing sensor 10 and the alarm sensor 9, respectively. The alarm sensor 9 and the opening and closing sensor 10 both use micro switches, which can effectively reduce the occupied assembly space, increase the assembly space of the communication module 2, and help reduce the overall volume of the intelligent molded case circuit breaker. The wiring terminals of the alarm sensor 9 and the opening and closing sensor 10 are both located in the first assembly slot, and the action reeds of both (the second reed 901 of the alarm contact 9 and the first reed 1001 of the opening and closing sensor 10) are both located in the base 4, cooperating with the second shaft boss 1311 and the first shaft boss 1310, respectively. When the circuit breaker trips due to overload or short circuit fault, the second rotating shaft boss 1302 triggers the alarm sensor 9 and changes its switching value, thereby outputting an alarm signal; when the intelligent molded case circuit breaker of the present invention is closed or opened through normal operation, the first rotating shaft boss 1310 triggers the opening and closing sensor 10 and changes its switching value, thereby outputting the opening and closing signal.

[0076] Preferably, the circuit breaker further comprises: an operating mechanism driven and connected to the contact system; the middle cover further comprises a second assembly slot provided on one side thereof with its opening facing the face cover; the first assembly slot and the second assembly slot are respectively provided on both sides of the operating mechanism; the handle of the operating mechanism passes through the middle cover and the face cover in sequence for user operation; the display and control circuit device is provided on one side of the first assembly slot, the operating mechanism, and the second assembly slot.

[0077] like Figure 2 and 4As shown, the intelligent molded case circuit breaker of the present invention also includes an operating mechanism connected to the contact system drive, as well as a shunt release and / or undervoltage release; the middle cover 3 also includes a second assembly slot 31 provided on one side thereof and opening toward the surface cover 1, the first assembly slot 30 and the second assembly slot 31 are respectively provided on both sides of the operating mechanism, the shunt release and / or undervoltage release are provided in the second assembly slot 31, and the display and control circuit device 6 is provided on one side of the first assembly slot 30, the operating mechanism, and the second assembly slot 31. The intelligent molded case circuit breaker of the present invention has a more reasonable spatial layout of its components, making the structure of the intelligent molded case circuit breaker more compact, which is conducive to reducing its overall volume and can meet the installation requirements of smaller-sized distribution boxes.

[0078] In addition, if Figure 8 and 9 As shown, the intelligent molded case circuit breaker of the present invention has an arc extinguishing chamber and a current transformer 15 for metering, respectively, at each end of each pole chamber of its base 4. The arc extinguishing chamber is used in conjunction with the contact system. The current transformer 15 is mounted on a moving contact terminal block 16a electrically connected to the moving contact. The stationary contact is electrically connected to the stationary contact terminal block 16b and is located at the lower end of the arc extinguishing chamber. Furthermore, each pole chamber is provided with a transformer 14 for protection. The transformer 14 is mounted on the moving contact terminal block 16a and is located between the current transformer 15 and the moving contact.

[0079] The invention has been described above with reference to a few embodiments. However, it is readily apparent to a person skilled in the art that other embodiments than the ones disclosed above are equally within the scope of the invention, as defined by the appended patent claims.

[0080] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a / the [means, component, etc.]" are to be interpreted openly as referring to at least one instance of the means, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not necessarily need to be performed in the exact order disclosed, unless explicitly stated otherwise.

[0081] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0082] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0083] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. An intelligent molded case circuit breaker with broadband power line carrier communication function, characterized in that: The circuit breaker comprises: a circuit breaker housing, a communication module, a display and control circuit device and at least one contact system; wherein, The circuit breaker housing includes a base, a middle cover and a surface cover arranged in sequence from bottom to top; the middle cover includes a first assembly groove arranged on one side thereof and with an opening facing the surface cover; The communication module is connected to the display and control circuit device, and the communication module is a broadband power line carrier communication HPLC module. The communication module is arranged in the first assembly slot and adjacent to the cover; the display and control circuit device is arranged between the base and the middle cover; Each set of the contact system includes a movable contact and a stationary contact for use in conjunction with each other, and a contact shaft pivotally disposed on the circuit breaker housing and used to assemble the movable contact. The contact shaft is used to rotate when the circuit breaker trips due to an overload or short circuit fault or when the circuit breaker is closed or opened, thereby triggering the sensor module to operate; The display and control circuit device includes: a first plug-in terminal provided at one end of the first assembly slot, the first plug-in terminal being connected to the sensor module via a wire group, and the communication module shielding the wire group after being assembled into the first assembly slot; In which, the display and control circuit device also includes: a second plug-in terminal that is plugged into and cooperates with the communication module, the second plug-in terminal is arranged on one side of the first plug-in terminal and is located between the communication module and the first plug-in terminal, and the first plug-in terminal and the second plug-in terminal are arranged on the side wall of the same end of the first assembly slot; the plug-in direction of the wire group and the first plug-in terminal is parallel to the surface cover, and the plug-in direction of the second plug-in terminal and the communication module is perpendicular to the surface cover.

2. The circuit breaker according to claim 1, wherein: The wire group includes: a first wire group for connecting the alarm sensor and the first plug terminal and / or a second wire group for connecting the opening and closing sensor and the first plug terminal.

3. The circuit breaker according to claim 1, wherein: The display and control circuit device further includes: an external communication interface, a power communication terminal and a circuit board assembly, wherein the circuit board assembly includes: a communication and liquid crystal display circuit board, a control circuit board, a metering circuit board and a power supply unit; Among them, the external communication interface, the power communication terminal and the second plug-in terminal are arranged on the communication and liquid crystal display circuit board; the first plug-in terminal is arranged on the metering circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal, the metering circuit board and the control circuit board connected in sequence; or, the first plug-in terminal is directly arranged on the control circuit board, and the sensor module is communicatively connected to the control circuit board through the first plug-in terminal; the external circuit is electrically connected to the power supply module through the power communication terminal.

4. The circuit breaker according to claim 3, characterized in that The communication module includes: a module base, a communication module circuit board assembly, a module cover and a communication module plug-in terminal; In which, the communication module circuit board assembly is arranged in the module base; the communication module circuit board assembly is provided with a signal conversion circuit, or is also provided with a power supply step-down unit, the power supply unit is connected to the signal conversion circuit to provide working power for the external circuit, or the power supply unit is connected to the signal conversion circuit through the power supply step-down unit to provide working power for the external circuit.

5. The circuit breaker according to claim 3, characterized in that The display and control circuit device further includes: a circuit board bracket disposed between the base and the middle cover; the circuit board bracket includes: a bracket bottom plate and a circuit board assembly cavity and a second support arm respectively disposed at both ends of the bracket bottom plate; Among them, the side wall of the circuit board assembly cavity away from and opposite to the second support arm is the first support arm; both ends of the communication and liquid crystal display circuit board and both ends of the control circuit board are respectively limited by the first support arm and the second support arm, and the metering circuit board and the power supply unit are arranged in the circuit board assembly cavity.

6. The circuit breaker according to claim 5, characterized in that The circuit board assembly cavity is an L-shaped structure, one end of which protrudes toward the first assembly groove and forms a plug-in terminal assembly groove for accommodating the first plug-in terminal.

7. The circuit breaker according to claim 5, characterized in that The circuit breaker further includes: a magnetic flux release and a release cover. The release cover is arranged on the bracket bottom plate and located between the circuit board assembly cavity and the second support arm. The magnetic flux release is arranged in the release cover.

8. The circuit breaker according to claim 1, wherein: The contact shaft includes: a first shaft boss and a second shaft boss respectively located on both sides of the moving contact; the sensor module is a micro switch; the first shaft boss and the second shaft boss cooperate with the sensor module to trigger the sensor module to operate.

9. The circuit breaker according to claim 1, wherein: The sensor module includes: an alarm sensor and / or a switch-on / off sensor; In which, the alarm sensor and / or the opening and closing sensor are arranged at the bottom of the first assembly slot. When the circuit breaker trips due to overload or short circuit fault, the contact shaft rotates, triggering the alarm sensor to send an alarm signal; when the circuit breaker is closed or opened, the contact shaft rotates, triggering the opening and closing sensor to send a closing or opening signal.

10. The circuit breaker according to claim 1, wherein: The circuit breaker further includes: an operating mechanism driven and connected to the contact system; the middle cover further includes a second assembly slot provided on one side thereof with its opening facing the face cover; the first assembly slot and the second assembly slot are respectively provided on both sides of the operating mechanism; the handle of the operating mechanism passes through the middle cover and the face cover in sequence for user operation; the display and control circuit device is provided on one side of the first assembly slot, the operating mechanism, and the second assembly slot.

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