CN112382541A

CN112382541A - Intelligent molded case circuit breaker with broadband power line carrier communication function

Info

Publication number: CN112382541A
Application number: CN202010872681.6A
Authority: CN
Inventors: 张保亮; 张蓬鹤; 徐英辉; 杜新纲; 彭楚宁; 熊素琴; 甘新华; 徐永富; 张军; 李求洋; 李龙涛
Original assignee: State Grid Corp of China SGCC; Zhejiang Chint Electrics Co Ltd; China Electric Power Research Institute Co Ltd CEPRI
Current assignee: State Grid Corp of China SGCC; Zhejiang Chint Electrics Co Ltd; China Electric Power Research Institute Co Ltd CEPRI
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-02-19

Abstract

The invention discloses an intelligent plastic shell breaker with broadband power line carrier communication function, comprising: the circuit breaker comprises a circuit breaker shell, a communication module, a display and control circuit device and at least one group of contact systems; the circuit breaker shell comprises a base, a middle cover and a face cover which are sequentially arranged from bottom to top; the middle cover comprises a first assembling groove which is arranged at one side of the middle cover and the opening of which faces the surface cover; the communication module is arranged in the first assembling groove and is close 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 comprises a moving contact and a fixed contact which are matched with each other for use, and a contact rotating shaft which is arranged on a shell of the circuit breaker in a pivoting mode and is used for assembling the moving contact, wherein the contact rotating shaft is used for rotating when the circuit breaker is tripped due to overload or short circuit faults or the circuit breaker is switched on or switched off, so that the sensor module is triggered to work. The invention has more compact structure and smaller volume; have fine isolation protection, can avoid the user to uncap the electric shock danger under the circumstances such as maintenance.

Description

Intelligent molded case circuit breaker with broadband power line carrier communication function

Technical Field

The invention relates to the technical field of low-voltage electric appliances, in particular to an intelligent plastic shell circuit breaker with a broadband power line carrier communication function.

Background

With the development of the internet of things of the national electric power ubiquitous, the development and construction of an intelligent power distribution area are more and more rapid, wherein an intelligent plastic shell circuit breaker is a key power distribution component of the intelligent distribution area.

The following problems often exist in the existing intelligent type plastic shell circuit breaker:

firstly, on the basis of having a protection function, an intelligent circuit breaker product needs to have various information transmission and control functions, and in some cases, the requirements of customers for directly replacing external modules such as a communication module are also met.

Secondly, the existing intelligent molded case circuit breaker uploads the switching-on/off state quantity and the fault alarm state quantity of the circuit breaker to an intelligent power distribution terminal (TTU) through an auxiliary accessory, the auxiliary accessory is assembled in a cavity groove of a middle cover, but the auxiliary accessory is large in size and occupies a side groove position of the middle cover, so that when the intelligent molded case circuit breaker needs to be connected with an HPLC (high performance liquid chromatography) communication module or an RS485 communication module, the auxiliary accessory needs to be hung on the intelligent molded case circuit breaker in a side hanging manner, the circuit breaker is large in size, the communication module is connected with the circuit breaker body through a wiring harness, the attractiveness and the connection reliability are influenced

Third, current intelligent moulded case circuit breaker, its controller generally need great installation space for falling L font structural layout, often can crowd the space of occuping in assembly accessories, and the LCD panel of controller is embedded in the face lid moreover, is connected with the controller through inside lead wire, is not convenient for be used for maintaining.

Finally, when a user opens a panel-mounted HPLC module or shunt/undervoltage release or other accessories, the existing intelligent plastic case circuit breaker is prone to electric shock accidents due to the exposed components of the controller.

Disclosure of Invention

The invention provides an intelligent plastic shell circuit breaker with a broadband power line carrier communication function, and aims to solve the problem of how to design a circuit breaker with a compact structure and a small size.

In order to solve the above problems, according to an aspect of the present invention, there is provided an intelligent plastic case circuit breaker having a broadband power line carrier communication function, the circuit breaker including: the circuit breaker comprises a circuit breaker shell, a communication module, a display and control circuit device and at least one group of contact systems; wherein,

the circuit breaker shell comprises a base, a middle cover and a face cover which are sequentially arranged from bottom to top; the middle cover comprises a first assembling groove which is arranged at one side of the middle cover and has an opening facing the surface cover;

the communication module is connected with the display and control circuit device, the communication module is a broadband power line carrier communication (HPLC) module, and the communication module is arranged in the first assembling groove and is close 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 comprises a moving contact and a fixed contact which are matched with each other for use, and a contact rotating shaft which is arranged on a shell of the circuit breaker in a pivoting mode and is used for assembling the moving contact, wherein the contact rotating shaft is used for rotating when the circuit breaker is tripped due to overload or short circuit faults or the circuit breaker is switched on or switched off, so that the sensor module is triggered to work.

Preferably, the display and control circuitry comprises: the first plug terminal is arranged at one end of the first assembling groove and is connected with the sensor module through a wire group, and the communication module is assembled in the first assembling groove and then shields the wire group.

Preferably, the display and control circuit device further comprises: the second plug terminal is arranged on one side of the first plug terminal and positioned between the communication module and the first plug terminal, and the first plug terminal and the second plug terminal are arranged on the side wall of the same end of the first assembling groove; the plugging direction of the wire group and the first plugging terminal is parallel to the surface cover, and the plugging direction of the second plugging terminal and the communication module is vertical to the surface cover.

Preferably, the wire group comprises: the first lead group is used for connecting the alarm sensor and the first plug terminal and/or the second lead group is used for connecting the switching-on/off sensor and the first plug terminal.

Preferably, the display and control circuit device further comprises: external communication interface, get electric communication terminal and circuit board assembly, circuit board assembly includes: the device comprises a communication and liquid crystal display circuit board, a control circuit board, a metering circuit board and a power supply unit;

the external communication interface, the power-taking communication terminal 602 and the second plug-in terminal are arranged on the communication and liquid crystal display circuit board; the first plug terminal is arranged on the metering circuit board, and the sensor module is in communication connection with the control circuit board through the first plug terminal and the metering circuit board which are sequentially connected; or the first plug-in terminal is directly arranged on the control circuit board, and the sensor module is in communication connection with the control circuit board through the first plug-in terminal; the external circuit is electrically connected with the power module through the power-taking communication terminal.

Preferably, wherein the communication module comprises: the module comprises a module base, a communication module circuit board assembly, a module housing and a communication module plug-in terminal;

wherein the communication module circuit board assembly is disposed within the module base; the communication module circuit board assembly is provided with the signal conversion circuit or simultaneously provided with the power supply voltage reduction unit, the power supply unit is connected with the signal conversion circuit to provide working power supply for the external circuit, or the power supply unit is connected with the signal conversion circuit through the power supply voltage reduction unit to provide working power supply for the external circuit.

Preferably, the display and control circuit device further comprises: the circuit board bracket is arranged between the base and the middle cover; the wiring board support includes: the support base plate, and the circuit board assembly cavity and the second support arm which are respectively arranged at the two ends of the support base plate;

the side wall of the circuit board assembly cavity, which is far away from the second supporting arm and opposite to the second supporting arm, is a first supporting arm; the two ends of the communication and liquid crystal display circuit board and the two ends of the control circuit board are respectively in limit fit with the first supporting arm and the second supporting arm, and the metering circuit board and the power supply unit are arranged in the circuit board assembly cavity.

Preferably, the circuit board assembly cavity is of an L-shaped structure, and one end of the circuit board assembly cavity protrudes towards the first assembly groove and forms a plug terminal assembly groove for accommodating the first plug terminal.

Preferably, the circuit breaker further comprises: the magnetic flux tripper is arranged in the tripper cover shell, the tripper cover shell is arranged on the support base plate and is positioned between the circuit board assembly cavity and the second supporting arm.

Preferably, the contact rotating shaft comprises: the sensor module is a microswitch, and the first rotating shaft boss and the second rotating shaft boss are matched with the sensor module to trigger the sensor module to work.

Preferably, wherein the sensor module comprises: an alarm sensor and/or a switching-on/off sensor;

the alarm sensor and/or the switching-on/off sensor are/is arranged at the bottom of the first assembling groove, and when the circuit breaker trips due to overload or short circuit fault, the contact rotating shaft rotates to trigger the alarm sensor to send out an alarm signal; when the circuit breaker is switched on or switched off, the contact rotating shaft rotates to trigger the switching-on and switching-off sensor to send a switching-on or switching-off signal.

Preferably, wherein the circuit breaker further comprises: the operating mechanism is in driving connection with the contact system, the middle cover further comprises a second assembling groove which is arranged on one side of the middle cover, the opening of the second assembling groove faces the face cover, the first assembling groove and the second assembling groove are respectively arranged on two sides of the operating mechanism, and a handle of the operating mechanism sequentially penetrates through the middle cover and the face cover to be operated by a user; the display and control circuit device is arranged on one side of the first assembly groove, the operating mechanism and the second assembly groove.

The invention provides an intelligent plastic shell breaker, comprising: the circuit breaker comprises a circuit breaker shell, a communication module, a display and control circuit device and at least one group of contact systems; the circuit breaker shell comprises a base, a middle cover and a face cover which are sequentially arranged from bottom to top; the middle cover comprises a first assembling groove which is arranged at one side of the middle cover and the opening of which faces the surface cover; the communication module is arranged in the first assembling groove and is close 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 comprises a moving contact and a fixed contact which are matched with each other for use, and a contact rotating shaft which is arranged on a shell of the circuit breaker in a pivoting mode and is used for assembling the moving contact, wherein the contact rotating shaft is used for rotating when the circuit breaker is tripped due to overload or short circuit faults or the circuit breaker is switched on or switched off, so that the sensor module is triggered to work. The communication module is arranged in the circuit breaker, so that the circuit breaker is attractive in appearance, reliable in connection, more compact in structure and smaller in size; the circuit breaker can be compatible with various communication modes, so that a user can select the circuit breaker by himself, the circuit breaker is convenient to use on site, and plug and play can be achieved; the display and control circuit device is arranged in the cover, has good isolation protection, and can avoid electric shock hazard when a user opens the cover to repair and maintain or installs accessories such as shunt in an electrified way.

Drawings

A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:

fig. 1 is a schematic structural diagram of an intelligent plastic-shell circuit breaker 100 with broadband power line carrier communication function according to an embodiment of the present invention;

FIG. 2 is a diagram of the assembly relationship among a first assembly groove, a second assembly groove, an alarm sensor, a switching-on/off sensor and a communication module in the first assembly groove according to the embodiment of the invention;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1 according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the circuit breaker with the face cover removed according to the embodiment of the present invention;

fig. 5 is an enlarged structural view of a portion B of fig. 4 according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating the mounting relationship between the display and control circuitry and the base, according to an embodiment of the present invention;

fig. 7 is an exploded view schematically illustrating a circuit breaker according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a contact system according to an embodiment of the present invention;

FIG. 9 is a diagram of the relationship between the contact rotating shaft and the alarm sensor and the opening and closing sensor according to the embodiment of the invention;

FIG. 10 is a schematic diagram of a circuit board assembly of a communication and control circuit device according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a mounting bracket according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a communication and control circuit arrangement according to an embodiment of the present invention;

fig. 13 is an exploded view of a communication module according to an embodiment of the present invention.

Detailed Description

The 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, which are provided for complete 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 illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

Fig. 1 is a schematic structural diagram of an intelligent plastic-shell circuit breaker 100 with a broadband power line carrier communication function according to an embodiment of the present invention. As shown in fig. 1, the intelligent plastic case circuit breaker provided by the embodiment of the invention has the advantages that the communication module is built in the circuit breaker, the product is beautiful, the connection is reliable, the structure is more compact, and the volume is smaller; the circuit breaker can be compatible with various communication modes, so that a user can select the circuit breaker by himself, the circuit breaker is convenient to use on site, and plug and play can be achieved; the display and control circuit device is arranged in the cover, has good isolation protection, and can avoid electric shock hazard when a user opens the cover to repair and maintain or installs accessories such as shunt in an electrified way. The embodiment of the present invention provides an intelligent plastic case circuit breaker 100 with broadband power line carrier communication function, comprising: the circuit breaker comprises a circuit breaker shell, a communication module, a display and control circuit device and at least one group of contact systems.

Preferably, the circuit breaker housing comprises a base, a middle cover and a face cover which are sequentially arranged from bottom to top; the middle cover comprises a first assembling groove which is arranged at one side of the middle cover and has an opening facing the surface cover; the communication module is connected with the display and control circuit device, the communication module is a broadband power line carrier communication (HPLC) module, and the communication module is arranged in the first assembling groove and is close 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 comprises a moving contact and a fixed contact which are matched with each other for use, and a contact rotating shaft which is arranged on a shell of the circuit breaker in a pivoting mode and is used for assembling the moving contact, wherein the contact rotating shaft is used for rotating when the circuit breaker is tripped due to overload or short circuit faults or the circuit breaker is switched on or switched off, so that the sensor module is triggered to work.

As shown in fig. 2, 4 and 7, the intelligent plastic case circuit breaker according to the embodiment of the present invention includes a circuit breaker case 431, a communication module 2, a display and control circuit device 6, an alarm sensor 9 and/or a switching-on/off sensor 10, and at least one set of contact systems disposed inside the circuit breaker case 431. The contact system comprises a moving contact and a fixed contact which are matched with each other, and a contact rotating shaft which is arranged on the breaker shell 431 in a pivoting manner and used for installing the moving contact; the alarm sensor 9 and/or the opening and closing sensor 10 are/is respectively matched with the contact rotating shaft; the communication module 2, the alarm sensor 9 and/or the opening and closing sensor 10 are respectively connected with the display and control circuit device 6 in a communication way. The display and control circuit device 6 is positioned on the front side 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 arranged at the bottom of the first assembling groove 30 side by side at intervals, and the communication module 2 is arranged above the alarm sensor 9 and the opening and closing sensor 10 and is positioned below the face cover 1.

As shown in fig. 2, the circuit breaker housing 431 includes a base 4, a middle cover 3 and a face cover 1, which are sequentially fitted, the middle cover 3 includes a first assembly groove 30 disposed at one side thereof and having an opening facing the face cover 1, the alarm sensor 9 and/or the switching-on/off sensor 10 is disposed at the bottom of the first assembly groove 30, and the communication module 2 is disposed in the first assembly groove 30 and is adjacent to the face cover 1. Alarm sensor 9 and divide-shut brake sensor 10 all set up in first assembly groove 30 bottom, have reserved sufficient assembly space for communication module 2, make communication module 2 need not the side and hang on the side of intelligent plastic shell circuit breaker. The display and control circuit device 6 is arranged between the base 4 and the middle cover 3, which is beneficial to the isolation protection of the display and control circuit device 6, and when the face cover 1 is removed to maintain the intelligent molded case circuit breaker, the display and control circuit device 6 is prevented from being directly exposed to a user, which causes the occurrence of electric shock. Alarm sensor 9 and divide-shut brake sensor 10 are fixed in first mounting groove 30 bottom through two parallel arrangement's installation axle 11, first mounting groove 30 bottom is equipped with two pilot holes, be used for cartridge alarm sensor 9 and divide-shut brake sensor 10 respectively, first mounting groove 30 still includes first spacing wall 302 and the second spacing wall 303 of setting respectively in alarm sensor 9 both sides, first spacing wall 302 is located between alarm sensor 9 and the divide-shut brake sensor 10, every installation axle 11 all passes first spacing wall 302 and one end passes alarm sensor 9 and inserts at the spacing wall 303 of second, the other end is spacing cooperation of pegging graft with divide-shut brake sensor 10, every installation axle 11 all is equipped with a jump ring 12 that is located first spacing wall 302 and alarm sensor 9, installation axle 11 and jump ring 12 have guaranteed that alarm sensor 9 and divide-shut brake sensor 10 are spacing in first mounting groove 30 by reliable installation.

As shown in fig. 2-5, the base 4, the middle cover 3 and the face cover 1 are sequentially arranged from bottom to top, the base 4 is internally divided into a plurality of polar chambers (for example, 3 polar chambers or 4 polar chambers), each polar chamber is internally provided with a contact system, the contact systems are linked with each other, the operating mechanism is in driving connection with the contact system of one of the polar chambers (as shown in fig. 6 and 7, the operating mechanism is in driving connection with the contact system in the middle), and a handle of the operating mechanism sequentially penetrates through the middle cover 3 and the face cover 1 to be operated by a user; as the direction shown in fig. 2, the side of the drawing facing the reader is the upper side of the circuit breaker, the side far away from the reader is the lower side of the circuit breaker, the left side and the right side of the drawing are the left side and the right side of the circuit breaker respectively, the lower side and the upper side of the drawing are the front side and the rear side of the circuit breaker respectively, the operating mechanism is arranged in the middle of the middle cover 3, and the first assembling groove 30 and the second assembling groove 31 are located on the right side and the left side of the operating mechanism respectively.

As shown in fig. 4 and 4, the display and control circuit arrangement 6 comprises: a first mating terminal 604 provided at one end of the first fitting groove 30. Alarm sensor 9 and/or divide-shut brake sensor 10 link to each other with first plug terminal 604 through the wire group, and communication module 2 assembles and shelters from the wire group to first assembly groove 30 back, when the user dismantles face lid 1, avoids the wire group to expose outside, is favorable to improving intelligent shell circuit breaker's security.

As shown in fig. 3-4, the display and control circuitry 6 further comprises: and a second mating terminal 603 mating with the communication module 2. The second jack terminal 603 is arranged on one side of the first jack terminal 604 and located between the communication module 2 and the first jack terminal 604, the first jack terminal 604 and the second jack terminal 603 are arranged on the side wall of the same end of the first assembly groove 30, the plugging direction of the wire group and the first jack terminal 604 is parallel to the face cover 1, and the plugging direction of the second jack terminal 603 and the communication module 2 is perpendicular to the face cover 1; the second plug terminal 603 is disposed at one side of the first plug terminal 604 and located between the communication module 2 and the first plug terminal 604, and the first plug terminal 604 and the second plug terminal are both disposed at the same side wall of the first assembling groove 30, which is beneficial to making the structure more compact, and because the plug directions of the first plug terminal 604 and the second plug terminal 603 are perpendicular to each other, although the two are close to each other, the sufficient insulation distance between the two is still ensured. Communication module 2 sets up in first assembly groove 30 and with show with the cooperation of pegging graft of second plug terminal 603 of control circuit device 6, at first be favorable to reducing intelligent shell circuit breaker's whole width, communication module 2 and communication are more convenient with the assembly of display circuit device 6, and the two need not to be connected through the wire, and the connection reliability is higher.

As shown in fig. 10, the display and control circuit device 6 is disposed between the base 4 and the middle cover 3, and further includes: and the circuit board assembly comprises a communication and liquid crystal display circuit board 605, a control circuit board 606, a metering circuit board 607 and a power supply module 608 which are sequentially arranged between the base 4 and the middle cover 3. The first plug terminal 604 is arranged on the metering circuit board 607, and the alarm sensor 9 and/or the opening and closing sensor 10 are in communication connection with the control circuit board 606 through the first plug terminal 604 and the metering circuit board 607 which are connected in sequence; or, the first plug terminal 604 is directly arranged on the control circuit board 606, and the alarm sensor 9 and/or the opening and closing sensor 10 are connected with the control circuit board 606 through the first plug terminal 604 in a communication manner. The metering circuit board 607 is provided with a metering core which can complete the functions of timing, electric quantity metering, electric energy and time storage and communication with a management core; the control circuit board 606 is provided with a control chip, which can complete management functions such as fault monitoring and communication.

As shown in fig. 10, the display and control circuit device 6 further includes: and a power-taking communication terminal 602 provided on the circuit board assembly, through which the external circuit is electrically connected to the power module 608 of the display and control circuit device 6. The communication module 2 is an HPLC module, and the HPLC module is connected to the platform area through a second plug terminal 603, a circuit board assembly, a power-taking communication terminal 602, and an external circuit, which are connected in sequence. The display and control circuit device 6 further comprises an external communication interface 601 arranged on a communication and display circuit board 605 of the display and control circuit device 6, wherein the external communication interface 601 is an RS485 interface or a serial port or a CAN interface; the communication module 2, the power-taking communication terminal 602 and the external communication interface 601 enable the intelligent plastic shell circuit breaker to be compatible with various communication modes, so that a user can select the intelligent plastic shell circuit breaker by himself, and the intelligent plastic shell circuit breaker is convenient to use on site.

The display and control circuit device 6 has flexibility in structural design, is convenient for users to select according to actual needs, and meets different working conditions and use requirements.

In the embodiment of the present invention, the display and control circuit device 6 further includes a power-taking communication terminal 602 disposed on the communication and liquid crystal display circuit board 605, and the external circuit is electrically connected to the power supply module 608 through the power-taking communication terminal 602. Further, the communication module 2 is an HPLC module, and the HPLC module is connected to a platform area (the platform area refers to a communication network in a power supply range or area of a transformer) through a second plug terminal 603, a communication and liquid crystal display circuit board 605, a power-taking communication terminal 602 and an external circuit which are connected in sequence.

Further, as shown in fig. 6, 9 and 11, the display and control circuit device 6 further includes an external communication interface 601 disposed on the communication and liquid crystal display circuit board 605, and the external communication interface 601 is an RS485 interface, a serial port or a CAN interface. Specifically, as shown in fig. 10 and 11, the external communication interface 601 is disposed at the left end of the upper side of the communication and liquid crystal display circuit board 605, the power-taking communication terminal 602 is located between the communication and liquid crystal display circuit board 605 and the control circuit board 606 and disposed on the communication and liquid crystal display circuit board 605, the first plug terminal 604 is disposed at the right end of the control circuit board 606 or disposed at the right end of the metering circuit board 607, and the second plug terminal 603 is located above the first plug terminal 604 and disposed on the control circuit board 606.

As shown in fig. 13, the communication module 2 includes a module base 201 and a module cover 203, which are cooperatively used, and a communication module circuit board assembly 202 disposed in the module base 201. The communication module circuit board assembly 202 is provided with the signal conversion circuit, or provided with the signal conversion circuit and a power supply voltage reduction unit; the communication module 2 comprises a signal conversion circuit, and the power supply unit 608 is connected with the signal conversion circuit to provide working power supply for the signal conversion circuit; or the communication module 2 further comprises a power supply voltage reduction unit, and the external circuit is connected with the signal conversion circuit through the power supply voltage reduction unit to provide a working power supply for the signal conversion circuit. The communications module wiring board assembly 202 also includes communications module jack terminals 204 that mate with second jack terminals 603. The module base 201 is in an inverted convex structure, the upper end of the module base is opened and is in snap fit with the module housing 203, the communication module circuit board assembly 202 is arranged in a space formed by the module base 201 and the module housing 203, and the right end of the module base is provided with a communication module plug-in terminal 204 which penetrates through the bottom wall of the right end of the module base 201 and is in plug fit with a second plug-in terminal 603 of the display and control circuit device 6.

As shown in fig. 11, 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 includes a support bottom plate 5a, and a circuit board assembly cavity 50 and a second support arm 502 respectively disposed at two ends of the support bottom plate 5a, a side wall of the circuit board assembly cavity 50 away from the second support arm 502 and opposite thereto is a first support arm 501; the two ends of the communication and liquid crystal display circuit board 605 and the two ends of the control circuit board 606 are respectively in limit fit with the first support arm 501 and the second support arm 502, and the metering circuit board 607 and the power module 608 are arranged in the circuit board assembly cavity 50. The circuit board assembly cavity 50 has an L-shaped configuration with one end protruding toward the first assembly groove 30 and forming a receptacle terminal assembly groove 505 for receiving the first receptacle terminal 604.

As shown in fig. 11 and 12, the circuit board mounting cavity 50 has an L-shaped configuration, one end of which protrudes toward the first mounting groove 30 and forms a jack terminal mounting groove 505 for receiving a first jack terminal 604 of the display and control circuit device 6. Further, as shown in fig. 10 to 11, two ends of the communication and liquid crystal display circuit board 605 are respectively provided with a first limiting boss 605a, and the upper ends of the first support arm 501 and the second support arm 502 are respectively provided with a first limiting hole which is in limiting fit with the first limiting boss 605 a; one end of each of the power module 608 and the metering circuit board 607 abuts against the side wall of the circuit board assembly cavity 50 opposite to the first support arm 501, the other end of each of the power module and the metering circuit board 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 in limiting fit with the first limiting groove 611; one end of the control circuit board 606 abuts against the second support arm 502, and the other end is provided with a first limit groove 611 which is in limit fit with the second limit boss 501 a. Further, the end of the bracket bottom plate 5a, which is provided with the first support arm 501, is further provided with an installation limiting table 503a, the other end of the bracket bottom plate is provided with a fixing hole 506, the bracket bottom plate 5a is fixed on the base 4 through the fixing hole 506 by a fixing screw 8, an installation limiting groove 503 is formed in one side wall of the base 4, and the installation limiting table 503a is in limiting fit with the installation limiting groove 503. Specifically, as shown in fig. 11, a second support arm 502 and a circuit board assembly cavity 50 are respectively disposed at the left end and the right end of the support base plate 5a, a first support arm 501 is disposed on the right side wall of the circuit board assembly cavity 50, a second limit boss 501a is disposed at the left side of the first support arm 501, first limit holes are disposed at the upper ends of the first support arm 501 and the second support arm 502, a plug terminal assembly groove 505 is formed at the right end of the circuit board assembly cavity 50 in an upward protruding manner, an installation limit table (not shown) is further disposed at the right end of the support base plate 5a, and a plurality of fixing holes 506 are disposed at the left end; as shown in fig. 10, the left and right ends of the communication and liquid crystal display circuit board 605 are provided with first limiting bosses 605a, and the right ends of the control circuit board 606, the metering circuit board 607 and the power module 608 are provided with first limiting grooves 611; as shown in fig. 10, the first limiting bosses 605a at two ends of the communication and liquid crystal display circuit board 605 are respectively in limiting fit 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 abutted against the left side wall of the circuit board assembly cavity 50, the first limiting grooves 611 at the right end are both in limiting fit with the second limiting bosses 501a, the left end of the control circuit board 606 is abutted against the second support arm 502, and the first limiting grooves 611 at the right end are both in limiting fit with the second limiting bosses 501 a.

As shown in fig. 6, 10 and 11, the intelligent molded case circuit breaker of the present invention further includes a magnetic flux release 150 and a release case 7, the release case 7 is disposed on the support base plate 5a and between the circuit board assembly cavity 50 and the second support arm 502, and the magnetic flux release 150 is disposed in the release case 7 to cooperate with the operating mechanism. Further, as shown in fig. 6, a housing locking hole 701 is formed at the lower end of the release housing 7, a base plate locking platform 504 is formed on the support base plate 5a, and the release housing 7 is reversely buckled on the support base plate 5a, is in limit fit with the base plate locking platform 504 through the housing locking hole 701, and is fixedly connected with the support base plate 5 a.

As shown in fig. 8, the contact rotating shaft 13 includes a first rotating shaft boss 1310 and a second rotating shaft boss 1311 respectively located at two sides of the moving contact, the alarm sensor 9 and the switching-off and switching-on sensor 10 are both microswitches, and the first rotating shaft boss 1310 and the second rotating shaft boss 1311 are respectively matched with the switching-off and switching-on sensor 10 and the alarm sensor 9. Alarm sensor 9 and divide-shut brake sensor 10 all adopt micro-gap switch, can effectively reduce the assembly space who occupies, have increased communication module 2's assembly space, are favorable to reducing intelligent plastic shell circuit breaker's whole volume. The wiring terminals of the alarm sensor 9 and the opening and closing sensor 10 are both located in the first assembling groove, and the action reeds (the second reed 901 of the alarm sensor 9 and the first reed 1001 of the opening and closing sensor 10) of the alarm sensor 9 and the opening and closing sensor 10 are both located in the base 4 and are respectively matched with the second rotating shaft boss 1311 and the first rotating shaft boss 1310. 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 the switching value thereof, thereby outputting an alarm signal; when the intelligent molded case circuit breaker of the present invention is normally operated to switch on or switch off, the first rotating shaft boss 1310 triggers the switching on/off sensor 10 and changes its switching value, thereby outputting a switching on/off signal.

As shown in fig. 2 and 4, the intelligent plastic-shell circuit breaker of the invention further comprises an operating mechanism in driving connection with the contact system, and a shunt release and/or an undervoltage release; the middle cover 3 further comprises a second assembling groove 31 which is arranged on one side of the middle cover and has an opening facing the surface cover 1, the first assembling groove 30 and the second assembling groove 31 are respectively arranged on two sides of the operating mechanism, the shunt release and/or the undervoltage release are/is arranged in the second assembling groove 31, and the display and control circuit device 6 is arranged on one side of the first assembling groove 30, one side of the operating mechanism and one side of the second assembling groove 31. The intelligent plastic shell circuit breaker has more reasonable spatial layout of components, enables the structure of the intelligent plastic shell circuit breaker to be more compact, is beneficial to reducing the whole volume of the intelligent plastic shell circuit breaker, and can meet the installation requirement of a distribution box with smaller specification.

In addition, as shown in fig. 8 and 9, the two ends of each pole chamber of the base 4 of the intelligent plastic case circuit breaker of the present invention are respectively provided with an arc extinguish chamber and a current transformer 15 for metering, the arc extinguish chamber is used in cooperation with a contact system, the current transformer 15 is arranged on a movable contact terminal board 16a electrically connected with a movable contact, and a fixed contact is electrically connected with a fixed contact terminal board 16b and is located at the lower end of the arc extinguish chamber. Further, a mutual inductor 14 for protection is further respectively arranged in each polar chamber, and the mutual inductor 14 is sleeved on the movable contact terminal board 16a and is positioned between the current transformer 15 and the movable contact.

The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.

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/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims

1. The utility model provides an intelligent shell circuit breaker of moulding with broadband power line carrier communication function which characterized in that, the circuit breaker includes: the circuit breaker comprises a circuit breaker shell, a communication module, a display and control circuit device and at least one group of contact systems; wherein,

2. The circuit breaker of claim 1, wherein the display and control circuit arrangement comprises: the first plug terminal is arranged at one end of the first assembling groove and is connected with the sensor module through a wire group, and the communication module is assembled in the first assembling groove and then shields the wire group.

3. The circuit breaker of claim 2, wherein said display and control circuitry further comprises: the second plug terminal is arranged on one side of the first plug terminal and positioned between the communication module and the first plug terminal, and the first plug terminal and the second plug terminal are arranged on the side wall of the same end of the first assembling groove; the plugging direction of the wire group and the first plugging terminal is parallel to the surface cover, and the plugging direction of the second plugging terminal and the communication module is vertical to the surface cover.

4. The circuit breaker according to claim 2 or 3, characterized in that said group of conductors comprises: the first lead group is used for connecting the alarm sensor and the first plug terminal and/or the second lead group is used for connecting the switching-on/off sensor and the first plug terminal.

5. The circuit breaker of claim 3, wherein said display and control circuitry further comprises: external communication interface, get electric communication terminal and circuit board assembly, circuit board assembly includes: the device comprises a communication and liquid crystal display circuit board, a control circuit board, a metering circuit board and a power supply unit;

6. The circuit breaker of claim 5, wherein the communication module comprises: the module comprises a module base, a communication module circuit board assembly, a module housing and a communication module plug-in terminal;

7. The circuit breaker of claim 5, wherein the display and control circuitry further comprises: the circuit board bracket is arranged between the base and the middle cover; the wiring board support includes: the support base plate, and the circuit board assembly cavity and the second support arm which are respectively arranged at the two ends of the support base plate;

8. The circuit breaker of claim 7, wherein the circuit board mounting cavity is of an L-shaped configuration with one end protruding toward the first mounting slot and forming a receptacle terminal mounting slot for receiving the first receptacle terminal.

9. The circuit breaker of claim 7, further comprising: the magnetic flux tripper is arranged in the tripper cover shell, the tripper cover shell is arranged on the support base plate and is positioned between the circuit board assembly cavity and the second supporting arm.

10. The circuit breaker of claim 1, wherein the contact shaft comprises: the sensor module is a microswitch, and the first rotating shaft boss and the second rotating shaft boss are matched with the sensor module to trigger the sensor module to work.

11. The circuit breaker of claim 1, wherein the sensor module comprises: an alarm sensor and/or a switching-on/off sensor;

12. The circuit breaker of claim 1, further comprising: the operating mechanism is in driving connection with the contact system, the middle cover further comprises a second assembling groove which is arranged on one side of the middle cover, the opening of the second assembling groove faces the face cover, the first assembling groove and the second assembling groove are respectively arranged on two sides of the operating mechanism, and a handle of the operating mechanism sequentially penetrates through the middle cover and the face cover to be operated by a user; the display and control circuit device is arranged on one side of the first assembly groove, the operating mechanism and the second assembly groove.