A composite switch and a distribution box equipped with the composite switch

Abstract

The present application relates to a composite switch and a distribution box equipped with the composite switch. The composite switch adopts a modular split design, including a protection module, a control module, a communication acquisition and driving module, solves the problems of existing technology, such as strong and weak current mixed area, poor anti-interference, poor protection accuracy, and safety hazards, makes production, debugging and maintenance more convenient, and further improves interchangeability, maintainability and production efficiency; the distribution box equipped with the composite switch is convenient for production and maintenance of the distribution box through the modular design of each part, the use of the composite switch cooperated with the multi-loop control terminal reduces the size and external wiring of the distribution box, and the integration and intelligent degree are higher, expansion is convenient, local and remote protection, control, monitoring and management functions of all loops can be realized, the problems of complex and messy wiring of strong and weak current and oversize box body in the existing technology are solved, installation and disassembly are faster, and the production and working efficiency of the entire distribution box product are improved.

Description

Technical Field

[0001] This invention belongs to the field of power distribution equipment technology, and relates to a composite switch and a distribution box equipped with the composite switch. Background Technology

[0002] Composite switches are switching devices that close, carry, and interrupt current under normal conductive circuit conditions. They are an important component of power distribution systems and are widely used in industrial, commercial, and residential power distribution applications. However, with the development of intelligent power distribution technology, traditional composite switches can no longer meet current needs and are not suitable for intelligent control of power distribution switching. Furthermore, traditional composite switches suffer from incomplete separation of high-voltage and low-voltage circuits, poor anti-interference capabilities, high dispersion, poor protection accuracy, and incomplete power distribution protection functions, leaving potential safety hazards in power distribution systems. In view of these problems, this invention discloses a composite switch to solve these issues.

[0003] The composite switch disclosed in the Chinese patent application publication (application number 201920066628.X) integrates the design of the composite switch, which to some extent solves the problems of poor protection accuracy and incomplete protection of traditional circuit breakers in existing low-voltage power distribution systems, and the remaining power distribution safety hazards. It is also suitable for frequent on / off control of circuits and can realize local or remote centralized monitoring and management of the composite switch, significantly improving power distribution safety and the level of intelligent control. However, the aforementioned composite switch has the problem of mixed strong and weak current areas, and its safety is not high enough. Furthermore, the integrated design of the aforementioned composite switch results in insufficient interchangeability, maintainability, and production efficiency.

[0004] Distribution boxes are an important component of power management and electrical control. Traditional distribution boxes typically house circuit breakers, current transformers, and other equipment simply within the box. While this is sufficient for lower user power demands, it becomes inadequate as user needs increase. Traditional boxes are unsuitable for intelligent control of power on / off states. On one hand, they result in complex, bulky boxes with difficult assembly and maintenance, complex wiring, and messy circuitry, leading to low production and efficiency, hindering mass production. On the other hand, traditional distribution boxes suffer from poor controllability and scalability, low integration, and low intelligence. Their lack of systematic and centralized operation controls makes them insufficient to meet increasingly demanding power requirements. Therefore, it is necessary to invent a new type of distribution box equipped with a composite switch to address these issues.

[0005] The distribution box disclosed in Chinese patent application publication CN208656230U (application number 201820266831.7) uses a modular design and plug-in connections for its various structural components, making the installation and connection of circuit breakers, current transformers, and control contactors quicker and more accurate, without requiring additional complex external wiring. However, in actual production, the wiring for circuit breakers and contactors is still excessive, resulting in a less compact structure and relatively complex connections. This leads to a large size and weight of the distribution box, fewer expansion load channels, and insufficient system integration. Summary of the Invention

[0006] The purpose of this invention is to provide a composite switch and a distribution box equipped with the composite switch to solve the problems existing in the existing composite switches and distribution boxes. The composite switch and distribution box have modular structures, small size, multiple circuits, good safety, high integration and intelligence, and are easy to assemble, maintain and monitor. They effectively improve production and work efficiency, and have better controllability and scalability to meet the increasingly high power distribution needs of users.

[0007] To achieve the above objectives, embodiments of the present invention first provide a composite switch. The composite switch adopts a modular, split design, including a protection module, a control module, and a communication acquisition and drive module. The composite switch is divided into strong and weak current zones. The protection module mainly comprises the strong current zone and mechanical drive components, the control module mainly comprises the electromagnetic drive component zone, and the communication acquisition and drive module mainly comprises the weak current acquisition and control zone. The protection module and the control module are mechanically driven together to acquire the switch status of the handle. The communication acquisition and drive module and the protection module are mechanically driven and / or electrically connected. The communication acquisition and drive module and the control module are electrically connected via plug-in terminals. The protection module has an inlet port with a first wire clamp for connection to the load power supply, the control module has an outlet port with a second wire clamp for connection to the load, and the communication acquisition and drive module has a first plug-in terminal for connection to an external communication acquisition device.

[0008] Optionally, the first and second wire clamps can be crimped, plugged in, or snap-fitted, but are not limited to these three forms.

[0009] The protection module includes a handle, a push rod, and a micro switch push rod. A section of the lower end of the push rod protrudes from the protection module housing for mechanical drive connection to the communication acquisition and driving module. The protection module housing has an opening at one end of the fourth connector for electrical connection to the communication acquisition and driving module. The control module includes a micro switch, which is driven by the handle via the micro switch push rod, providing real-time feedback on the handle's on / off state. Necessary openings are provided on the corresponding contact surfaces of the protection module and the control module. The communication acquisition and driving module includes a first plug-in terminal, a second plug-in terminal, a fifth connector, and a shift fork. The shift fork is driven by the push rod opening and drives the push rod up and down by its rotation. The fifth connector is electrically connected to the fourth connector and the second connector. The communication acquisition and driving module is electrically connected to the control module via the second plug-in terminal, acquiring signals from the control module and performing control. Optionally, the fifth connector can be electrically connected to the fourth connector and the second connector using screw connections and / or plug-in connections.

[0010] In the aforementioned composite switch, the protection module further includes an electromagnetic trip unit, a moving contact, a stationary contact, a bimetallic strip, a first drive mechanism, an auxiliary lever, a hook spring, a moving contact seat, a trip lever, a latch, a connecting shaft, a first connecting piece, an arc-extinguishing grid, and an arc-inducing plate. The moving contact corresponds to the stationary contact, and the contact or separation of the moving and stationary contacts controls the flow of current. The moving contact is electrically connected to the bimetallic strip. The stationary contact is electrically connected to both the electromagnetic trip unit and the arc-extinguishing grid. The push lever is driven by the auxiliary lever, and the auxiliary lever is driven by the trip lever. The circuit consists of a jump rod and a moving contact seat, the jump rod being driven to the bimetallic strip via a hook spring, allowing the jump rod to move via the hook spring after the bimetallic strip deforms due to heat; the moving contact seat is driven to the moving contact of the switch, and the moving contact seat is driven to the jump rod; the jump rod is driven to the handle via a connecting shaft; the first connecting member is electrically connected to the first pressure frame and the bimetallic strip respectively; the fourth connecting member is electrically connected to the electromagnetic trip unit; the arc-inducing plate is electrically connected to the bimetallic strip, and when used in conjunction with the arc-extinguishing grid, it effectively reduces arcing and improves the safety of the composite switch.

[0011] In the aforementioned composite switch, the control module further includes a second drive mechanism, a stationary contact, a moving contact, and a third connector; the second drive mechanism is drivenly connected to the moving contact; the moving contact corresponds to the stationary contact; the second connector is electrically connected to the stationary contact; the third connector is electrically connected to the stationary contact and the second pressure frame respectively; the micro switch is drivenly connected to the handle through the micro switch push rod.

[0012] In the aforementioned composite switch, the communication acquisition and driving module further includes a composite switch current transformer, a first driving mechanism, and a control circuit board. The composite switch current transformer is sleeved on at least one of a first connector, a second connector, a third connector, a fourth connector, and a fifth connector. The composite switch current transformer is connected to the control circuit board to acquire current signals. The control circuit board is electrically connected to the first driving mechanism and / or the second driving mechanism to control the operation of the first driving mechanism and / or the second driving mechanism. The shift fork corresponds to the first driving mechanism and / or the push rod to drive the first driving mechanism and / or the push rod. The control circuit board is electrically connected to the micro switch through a second plug-in terminal. When the composite switch is opened or closed, a signal can be transmitted to the control circuit board through the micro switch, thereby enabling real-time monitoring of the opening and closing status of the composite switch, facilitating monitoring and management by administrators.

[0013] In the aforementioned composite switch, the second driving mechanism includes a stationary iron core, a coil, and a moving iron core, wherein the moving iron core is drivenly connected to the moving contact. Optionally, when the stationary iron core attracts the moving iron core, the moving contact and the stationary contact are closed; when the stationary iron core disconnects from the moving iron core, the moving contact and the stationary contact are disconnected; or alternatively, when the stationary iron core attracts the moving iron core, the moving contact and the stationary contact are disconnected; when the stationary iron core disconnects from the moving iron core, the moving contact and the stationary contact are closed. For example, when the moving and stationary contacts are closed, a pulse current flows through the coil to move the moving iron core, thus separating the moving and stationary contacts. This achieves continuous disconnection of the moving and stationary contacts without requiring uninterrupted power supply to the coil, effectively avoiding energy waste. Conversely, when closing is required, a reverse pulse current flows through the coil to move the moving iron core, thus connecting the moving and stationary contacts. Simultaneously, the stationary iron core attracts the moving iron core. Again, this achieves continuous closure of the moving and stationary contacts without requiring uninterrupted power supply to the coil, effectively avoiding energy waste. Another method involves separating the moving and stationary contacts when the stationary iron core attracts the moving iron core, and closing them when the stationary iron core disconnects the moving iron core. The principle is similar and will not be elaborated further. Therefore, this composite switch can be used for frequent on / off control of circuits without requiring continuous power supply to maintain connection or disconnection, effectively avoiding energy waste. It also eliminates the need for manual on / off control and does not affect the service life of the composite switch. It enables intelligent control of the composite switch, improving the level of intelligent power distribution control, and saves space by eliminating the need for other additional disconnection devices.

[0014] As a further improvement to the composite switch of the present invention, the control circuit board is provided with a first plug-in terminal and a second plug-in terminal. Optionally, the first plug-in terminal and the second plug-in terminal can be a plug or a socket, and can be at least one of RS485 plug-in terminal, RS232 plug-in terminal, USB plug-in terminal, network port or ZigBee wireless module; thereby, signals can be output from the control circuit board, the first drive mechanism, the second drive mechanism, the micro switch or the current transformer, or control signals can be input to the control circuit board, the first drive mechanism, the second drive mechanism, the micro switch or the current transformer. The composite switch can communicate with external devices through the first plug-in terminal. It can be connected to external devices such as processors, power distribution terminals, monitoring hosts, and host computers to achieve centralized monitoring and management of the composite switch locally or remotely. By digitally analyzing current and voltage signals through external devices, it can disconnect the line in real time when an abnormality occurs, protecting the safety of power distribution and power consumption equipment. This solves the problems of poor protection accuracy and incomplete protection of traditional circuit breakers, which still pose potential safety hazards in power distribution, and achieves accurate and comprehensive protection of power distribution. It can also set various power conditions according to user needs to control the on and off of the composite switch, thereby improving the intelligent control of the composite switch and the intelligence level of power distribution control.

[0015] Optionally, the housing contact surfaces connecting the protection module, control module, and communication acquisition drive module in pairs can achieve a tight connection between the modules by setting at least one of the following: protrusions and recesses of corresponding shapes, guide rails, pins, and screws, to prevent sliding in three axes and achieve a reliable connection.

[0016] An embodiment of the present invention also provides a distribution box equipped with a composite switch, including a box body and a door. The box body is provided with at least one inlet and at least one outlet, which are generally located at the top, bottom, or left and right sides of the box body, and can be configured differently according to user needs. The box body and the door are connected by hinges, allowing the door to rotate within a certain angle range. The door is equipped with a display screen, which displays power supply information and enables human-machine interaction parameter settings. The display screen is also equipped with a remote communication interface for remote monitoring and control of power distribution. The box body is also equipped with a fuse, a DC power supply, an incoming circuit breaker, an incoming copper busbar, an incoming branch terminal, a PE branch terminal, a composite switch, and a multi-circuit control terminal. The display screen is electrically connected to the DC power supply and is connected to the multi-circuit control terminal via a communication cable to read and control the multi-circuit control terminal and the incoming circuit breaker. At least one of the composite switches is electrically connected to the multi-circuit control terminal via a first plug-in terminal. The composite switch is snapped into the multi-circuit control terminal via a clip. The first clamping frame of the composite switch is electrically connected to the output terminal of the incoming branch terminal. The second clamping frame of the composite switch is connected to the load, which can range from one to multiple circuits as needed. The multi-circuit control terminal can be configured with at least one set of loads as required. A fuse is connected to the circuit between the incoming circuit breaker and the multi-circuit control terminal to provide protection for the voltage collected by the multi-circuit control terminal. The voltage of any phase of the circuit breaker output is converted into DC output by a DC power supply to provide necessary secondary DC power to the multi-circuit control terminal, the low-voltage control module, and the display screen. The output terminal of the circuit breaker is connected to the incoming branch terminal via an incoming copper busbar, and after branching, it is connected to at least one composite switch. The PE branch terminal is electrically connected to the PE ground of the enclosure to ensure good grounding of the enclosure.

[0017] The distribution box provided in at least one embodiment of the present invention further includes a current transformer and a low-voltage control module. The current transformer is electrically connected to the incoming circuit breaker and the incoming copper busbar and is also electrically connected to the low-voltage control module. The current transformer can also be installed at the input end of the incoming circuit breaker to detect the current signal of the main line and transmit the signal to the low-voltage control module. The relevant current information is displayed on the display screen through analysis and calculation. The low-voltage control module is connected to the display screen and the multi-circuit control terminal through communication and is electrically connected to the DC power supply and the incoming circuit breaker. It mainly realizes the information collection of each module unit.

[0018] The distribution box provided in at least one embodiment of the present invention further includes a surge protector, wherein the incoming line of the surge protector is taken from the incoming copper busbar and the N branch terminal, and the outgoing line of the surge protector, PE, is connected to the PE branch terminal for lightning protection of the distribution box.

[0019] At least one embodiment of the present invention provides a distribution box that further includes a zero-sequence current transformer and a multi-functional fire detector. The zero-sequence current transformer is sleeved on the line between the incoming line and the incoming circuit breaker and is electrically connected to the low-voltage control module. The multi-functional fire detector is communicatively connected to the low-voltage control module and the display screen. The zero-sequence current transformer, sleeved on the line between the incoming line and the incoming circuit breaker and electrically connected to the low-voltage control module, is used to output a zero-sequence current on the secondary side of the zero-sequence current transformer when an abnormality occurs in the circuit, causing the low-voltage control module connected to the zero-sequence current transformer to output an alarm signal. The multi-functional fire detector is powered from any one of the three-phase voltages and is communicatively connected to the low-voltage control module and the display screen.

[0020] Optionally, the multi-functional fire detector includes at least one of the following: a multi-functional fire detector, a fault arc detector, and a temperature sensor.

[0021] The distribution box provided in at least one embodiment of the present invention further includes a backup power supply, which is electrically connected to the low-voltage control module, the display screen, and the multi-circuit control terminal respectively, so as to provide backup power for the low-voltage control module, the display screen, and the multi-circuit control terminal when there is a power failure, ensuring that the main modules of the distribution box work normally and reducing and avoiding power outage losses.

[0022] The distribution box provided in at least one embodiment of the present invention further includes a partition, which is used to be installed on the box body by a support frame to facilitate the installation of unit modules. The gap between the partition and the rear wall of the box body can be used to arrange wiring.

[0023] The distribution box provided in at least one embodiment of the present invention further includes a support frame, which is used to mechanically connect the rear wall of the box body and the partition and fix the partition, the partition being used to install related modules.

[0024] Optionally, the display screen includes at least one of the following: a touch screen, an LCD screen, an LED screen, and an OLED screen.

[0025] This invention relates to a composite switch and a distribution box equipped with a composite switch. The composite switch adopts a modular, split design, including a protection module, a control module, and a communication acquisition and drive module. It solves the problems of mixed strong and weak current circuits, weak anti-interference capabilities, poor protection accuracy, and safety hazards in existing technologies. This makes production, debugging, and maintenance more convenient, and further improves interchangeability, maintainability, and production efficiency. The distribution box equipped with the composite switch facilitates production and maintenance through the modular design of each part. The use of the composite switch in conjunction with a multi-circuit control terminal reduces the size of the distribution box and external wiring, resulting in higher integration and intelligence, and easier expansion. It can realize local and remote protection, control, monitoring, and management functions for all circuits, solving the problems of complex and messy strong and weak current wiring and excessively large box size in existing technologies. Installation and disassembly are faster, improving the overall production and working efficiency of the distribution box product. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0027] Figure 1 This is a schematic diagram of the internal structure of the composite switch provided in Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic front view of the composite switch provided in Embodiment 1 of the present invention;

[0029] Figure 3 This is an isometric schematic diagram of the composite switch provided in Embodiment 1 of the present invention;

[0030] Figure 4 This is a schematic front view of the composite switch control module provided in Embodiment 1 of the present invention;

[0031] Figure 5 This is an isometric schematic diagram of the composite switch control module provided in Embodiment 1 of the present invention;

[0032] Figure 6 This is a schematic front view of the composite switch protection module provided in Embodiment 1 of the present invention;

[0033] Figure 7 This is an isometric view of the composite switch protection module provided in Embodiment 1 of the present invention;

[0034] Figure 8 This is a left view schematic diagram of the composite switch protection module provided in Embodiment 1 of the present invention;

[0035] Figure 9This is a schematic diagram of the main view of the composite switch communication acquisition and driving module provided in Embodiment 1 of the present invention;

[0036] Figure 10 This is an isometric schematic diagram of the composite switch communication acquisition and driving module provided in Embodiment 1 of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of a distribution box equipped with a composite switch according to Embodiment 2 of the present invention;

[0038] Figure 12 This is a schematic diagram of the structure of a distribution box equipped with a composite switch according to Embodiment 3 of the present invention;

[0039] Figure 13 This is a schematic diagram of the structure of a distribution box equipped with a composite switch according to Embodiment 4 of the present invention;

[0040] Figure 14 This is a schematic diagram of the structure of a distribution box equipped with a composite switch according to Embodiment 5 of the present invention;

[0041] Figure 15 This is a schematic diagram of the structure of a distribution box equipped with a composite switch provided in Embodiment Six of the present invention;

[0042] Figure 16 This is a schematic diagram of the structure of a distribution box equipped with a composite switch provided in Embodiment 7 of the present invention;

[0043] Figure 17 This is a schematic diagram of the enclosure structure of a distribution box equipped with a composite switch provided in Embodiment 8 of the present invention;

[0044] Figure 18 This is a schematic diagram of the door structure of a distribution box equipped with a composite switch provided in Embodiment 8 of the present invention;

[0045] In the picture:

[0046] 1. Door lock; 2. Box door; 3. Display screen; 4. Low-voltage control module; 5. Backup power supply; 6. Zero-sequence current transformer; 7. Fuse; 8. DC power supply; 9. Multifunctional fire detector; 10. Incoming circuit breaker; 11. Partition; 12. Current transformer; 13. Incoming copper busbar; 14. Surge protector; 15. Incoming branch terminal; 16. PE branch terminal; 17. Composite switch; 1701. Housing; 170101. Contactor housing; 170102. Circuit breaker housing; 170103. Controller housing; 1702. Handle; 1703. Jumper; 1704. Electromagnetic trip unit; 1705. Switch moving contact; 1706. Switch stationary contact; 1707. Arc extinguishing grid; 1708. Arc ignition plate; 1709. Bimetallic strip; 1710. Composite switch current transformer; 1711. First drive mechanism; 1712. Snap-fit; 1713. Moving contact base; 1714. Control circuit board; 1715. First plug-in terminal; 1716. Second drive mechanism; 171601. Moving iron core; 171602. Coil; 171603. Moving iron core; 1717. Second plug-in terminal; 1718. Stationary contact; 1719. Moving contact; 1720. First connector; 1721. Second connector; 1722. Third connector; 1723. Micro switch; 1724. Clip; 1725. First wire clamping frame; 1726. Second wire clamping frame; 1727. Connecting shaft; 1728. Hook spring; 1729. Push rod; 1730. Auxiliary lever; 1731. Shift fork; 1732. Micro switch push rod; 1733. First connecting fastener; 1734. Second connecting fastener; 1735. Fourth connector; 1736. Fifth connector; 1750. Control module; 175001. Control module recess; 175002. Control module protrusion; 175003. Control module base; 175004. Micro switch opening; 1751. Protection module; 175101. First protrusion of protection module; 175102. Protection module base; 175103. Second protrusion of protection module; 175104. Micro... 1752. Opening of the push rod of the active switch; 175202. Communication acquisition and drive module; 175203. First recess of the communication acquisition and drive module; 175204. Second recess of the communication acquisition and drive module; 175205. Base socket of the protection module; 175206. Second connection point; 175207. First connection point; 175208. Opening of the push rod; 18. C-type support frame; 19. Housing; 20. Multi-circuit control switch; 21. N branch terminal; 22. Support frame; 23. Hinge. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar words used in this disclosure, mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, but do not exclude other elements or objects. In the embodiments, the positions of the described objects in the distribution box and / or composite switch, such as "up," "down," "left," and "right," are only used to indicate relative positional relationships. When the absolute position of the described objects in the embodiments changes, the relative positional relationship may also change accordingly.

[0049] The distribution box equipped with a composite switch according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] Figure 1-10 The diagram shows a structural schematic of the composite switch and schematic diagrams of each module in this embodiment. Figure 1As shown, a preferred embodiment of the present invention includes a composite switch comprising a protection module 1751, a control module 1750, and a communication acquisition and driving module 1752. The protection module 1751 includes a handle 1702, a fourth connector 1735, a push rod 1729, a micro switch push rod 1732, and a micro switch push rod opening 175104. The protection module 1751 has a micro switch push rod opening 175104, one end of the push rod 1729 protruding from the housing of the protection module 1751, and the housing of the protection module 1751 has an opening at one end of the fourth connector 1735. The control module 1750 includes a micro switch 1723 and a second connector 1721. The micro switch 1723 passes through the micro switch opening 175004 and the micro switch push rod opening 175104, and is connected to the handle 1702 via the micro switch push rod 1732. The communication acquisition drive module 1752 includes a first plug-in terminal 1715, a second plug-in terminal 1717, a fifth connector 1736, and a shift fork 1731. The shift fork 1731 is driven to connect to the top rod 1729 through a top rod opening 175208, and the rotation of the shift fork 1731 drives the top rod 1729 to move up and down. The fifth connector 1736 is electrically connected to the fourth connector 1735 at a first connection point 175207 through a first fastener 1733, and the fifth connector 1736 is electrically connected to the second connector 1721 at a second connection point 175206 through a second fastener 1733. The communication acquisition drive module 1752 is electrically connected to the control module 1750 through the second plug-in terminal 1717, and acquires signals from the control module for control.

[0052] In the aforementioned composite switch, the protection module 1751 further includes an electromagnetic trip unit 1704, a moving contact 1705, a stationary contact 1706, a bimetallic strip 1709, a first drive mechanism 1711, an auxiliary lever 1730, a hook spring 1728, a moving contact seat 1713, a jumper 1703, a latch 1712, a connecting shaft 1727, a first connecting piece 1720, an arc-extinguishing grid 1707, and an arc-inducing plate 1708. The moving contact 1705 corresponds to the stationary contact 1706, and the contact or separation of the moving contact 1705 and the stationary contact 1706 achieves current switching control. The moving contact 1705 and the bimetallic strip... 1709 is electrically connected; the stationary contact 1706 of the switch is electrically connected to the electromagnetic trip unit 1704 and the arc-extinguishing grid 1707 respectively; the push rod 1709 is drivenly connected to the auxiliary lever 1730, the auxiliary lever 1730 is drivenly connected to the jump rod 1703, the jump rod 1730 is drivenly connected to the moving contact seat 1713, the jump rod 1703 is drivenly connected to the bimetallic strip 1729 through the hook spring 1728, so that after the bimetallic strip 1729 is deformed by heat, the hook spring 1728 drives the jump rod 1703 to move; the moving contact seat 1713 is drivenly connected to the moving contact 1705 of the switch, and the moving contact seat 1713 is drivenly connected to the jump rod 1703. Drive connection; the jump rod 1703 is driven to the handle 1702 via the connecting shaft 1727; the first connector 1720 is electrically connected to the first pressure frame 1725 and the bimetallic strip 1709 respectively; the fourth connector 1735 is electrically connected to the electromagnetic trip unit 1704; the arc-inducing plate 1708 is electrically connected to the bimetallic strip 1709, and when used in conjunction with the arc-extinguishing grid 1707, it effectively reduces the phenomenon of electric arcing and improves the safety of the composite switch.

[0053] In the aforementioned composite switch, the control module 1750 further includes a second drive mechanism 1716, a stationary contact 1718, a moving contact 1719, and a third connector 1722; the second drive mechanism 1716 is driven to connect with the moving contact 1719; the moving contact 1719 corresponds to the stationary contact 1718; the second connector 1721 is electrically connected to the stationary contact 1718; the third connector 1722 is electrically connected to the stationary contact 1718 and the second wire clamping frame 1726 respectively; the second drive mechanism 1716 includes a stationary iron core 171601, a coil 171602, and a moving iron core 171603, the moving iron core 171603 being driven to connect with the moving contact 1719; the micro switch 1723 is driven to connect with the handle 1702 via the micro switch push rod 1732, and the switch status of the handle 1702 is collected in real time.

[0054] In the aforementioned composite switch, the communication acquisition and driving module 1752 further includes a composite switch current transformer 1710, a first driving mechanism 1711, and a control circuit board 1714. The composite switch current transformer 1710 is sleeved on at least one of a first connecting member 1720, a second connecting member 1721, a third connecting member 1722, a fourth connecting member 1735, and a fifth connecting member 1736. The composite switch current transformer 1710 is connected to the control circuit board 1714 to acquire current signals. The control circuit board 1714 is electrically connected to the first driving mechanism 1711 and / or the second driving mechanism 1716 to control the operation of the first driving mechanism 1711 and / or the second driving mechanism 1716. The shift fork 1731 corresponds to the first driving mechanism 1711 and / or the push rod 1729 to achieve a driving connection between the first driving mechanism 1711 and / or the push rod 1729. The control circuit board 1714... The micro switch 1723 is electrically connected to the second plug-in terminal 1717. When the composite switch is opened or closed, the micro switch 1723 can transmit a signal to the control circuit board 1714, thereby enabling real-time monitoring of the opening and closing status of the composite switch, which is convenient for monitoring and management by the administrator.

[0055] As a further improvement to the composite switch of the present invention, the second drive mechanism 1716 includes a stationary iron core 171601, a coil 171602 and a moving iron core 171603, wherein the moving iron core 171603 is drivenly connected to the moving contact 1719. Optionally, when the stationary iron core 171601 attracts the moving iron core 171603, the moving contact and the stationary contact 1718 are closed; when the stationary iron core 171601 disconnects the moving iron core 171603, the moving contact 1719 and the stationary contact 1718 are disconnected. This eliminates the need for continuous power supply to the coil 171602, thus achieving continuous disconnection of the moving contact 1719 and the stationary contact 1718, effectively avoiding energy waste. Therefore, this composite switch can be used for frequent on / off control of circuits without requiring continuous power supply to maintain connection or disconnection, effectively avoiding energy waste. It also eliminates the need for manual on / off control and does not affect the lifespan of the composite switch. It enables intelligent control of the composite switch, improving the level of intelligent power distribution control, and saves space by eliminating the need for additional disconnection devices.

[0056] As a further improvement to the composite switch of the present invention, the control circuit board 1714 is provided with a first plug terminal 1715 and a second plug terminal 1717. Optionally, the first plug terminal 1715 and / or the second plug terminal 1717 can be a plug or a socket, and can be at least one of RS485 plug terminal, RS232 plug terminal, USB plug terminal, network port or ZigBee wireless module; thereby, signals can be output to the control circuit board 1714, the first drive mechanism 1711, the second drive mechanism 1716, the micro switch 1723 or the current transformer 1710, or control signals can be input to the control circuit board 1714, the first drive mechanism 1711, the second drive mechanism 1716, the micro switch 1723 or the current transformer 1710. The composite switch can communicate with external devices via plug-in terminals. It can be connected to processors, power distribution terminals, monitoring hosts, and host computers to achieve centralized monitoring and management of the composite switch locally or remotely. Through digital analysis of current and voltage signals by external devices, it can disconnect the line in real time when an anomaly occurs, protecting the safety of power distribution and consumer equipment. This solves the problems of poor protection accuracy and incomplete protection inherent in traditional circuit breakers, which still pose potential safety hazards in power distribution, achieving precise and comprehensive protection for power distribution. Furthermore, various power conditions can be set according to user needs to control the on / off state of the composite switch, enhancing the intelligent control of the composite switch and the overall intelligence of power distribution control.

[0057] Optionally, the protection module base socket 175205 is connected to the protection module base 175102, and the second recess 175204 of the communication acquisition drive module is connected to the second protrusion 175103 of the protection module; the control module socket 175202 is connected to the control module base 175003, and the first recess 175203 of the communication acquisition drive module is connected to the controller protrusion 175002; the control module recess 175001 is connected to the first protrusion 175101 of the protection module. By providing correspondingly shaped protrusions and recesses, pins, screws, etc., on the contact surfaces connecting the protection module, control module, and communication acquisition drive module in pairs, a tight and reliable connection between the contact surfaces of the protection module, control module, and communication acquisition drive module is achieved.

[0058] Example 2

[0059] Figure 11This diagram illustrates the structure of a distribution box equipped with a composite switch according to Embodiment 2 of the present invention. The embodiment of the present invention provides a distribution box including a box body 19 and a door 2. The box body has an inlet and an outlet, which are generally located at the top, bottom, or left and right sides of the box body, and can be configured differently according to user needs. The box body 19 and the door 2 are connected by a hinge 23, allowing the door 2 to rotate within a certain angle range. A display screen 3 is provided on the door, which displays power supply information and enables human-machine interaction parameter settings. The box body 19 also includes a fuse 7, a DC power supply 8, an incoming circuit breaker 10, an incoming copper busbar 13, an incoming branch terminal 15, a PE branch terminal 16, a composite switch 17, and a multi-circuit control terminal 20. The display screen 3 is connected to the DC power supply 8. The power supply 8 is electrically connected to the multi-circuit control terminal 20 and the incoming circuit breaker 10 via a communication cable to read and control the multi-circuit control terminal 20 and the incoming circuit breaker 10. The composite switch 17 has 36 channels (due to the size limitation of the enclosure, this example can be expanded to a maximum of 36 channels; if an external expansion box is used, it can be expanded to a maximum of 72 channels) and is connected to the multi-circuit control terminal 20. The input terminal of the composite switch 17 is connected to the output terminal of the input branch terminal 15, and the output terminal of the composite switch 17 is connected to the load. The load can be connected to a maximum of 36 channels. The multi-circuit control terminal 20 can be set to 3 groups (12 channels per group) as needed. The fuse 7 is connected to the circuit between the incoming circuit breaker 10 and the multi-circuit control terminal 20 to provide protection for the voltage collected by the multi-circuit control terminal 20. The incoming circuit breaker 10... The voltage of any phase of the output line is converted into DC output by the DC power supply 8, providing the necessary secondary DC power supply for the multi-circuit control terminal 20, the weak current control module 4 and the display screen 3 respectively; the output terminal of the incoming line circuit breaker 10 is connected to the incoming line branch terminal 15 through the incoming line copper busbar 13, and then connected to the composite switch 17 after branching; the PE branch terminal 16 is connected to the PE ground of the enclosure 19 to ensure good grounding of the enclosure 19.

[0060] The embodiments of the present invention further include at least a current transformer 12 and a low-voltage control module 4. The current transformer 12 is connected to the incoming circuit breaker 10 and the incoming copper busbar 13 and is also connected to the low-voltage control module 4. The current transformer 12 can also be installed at the input end of the incoming circuit breaker 10 to detect the current signal of the main line and transmit the signal to the low-voltage control module 4. The relevant current information is displayed on the display screen 3 through analysis and calculation. The low-voltage control module 4 is connected to the display screen 3, the multi-circuit control terminal 20, and the incoming circuit breaker 10 through communication and is electrically connected to the DC power supply 8. It mainly realizes the information collection of each module unit.

[0061] The embodiments of the present invention also include at least a surge protector 14, wherein the incoming lines A, B, C, and N of the surge protector 14 are taken from the incoming copper busbar 13 and the N branch terminal 21, and the outgoing line PE of the surge protector 14 is connected to the PE branch terminal 16 for lightning protection of the distribution box.

[0062] The embodiments of the present invention further include at least a zero-sequence current transformer 6 and a multi-functional fire detector 9. The zero-sequence current transformer 6 is sleeved on the line between the incoming line and the incoming line circuit breaker 10 and is connected to the low-voltage control module 4. The multi-functional fire detector 9 is connected to the low-voltage control module 4 and the display screen 3 through communication.

[0063] The zero-sequence current transformer 6 is installed on the line between the inlet and the inlet circuit breaker 10 and is electrically connected to the low-voltage control module 4. When an abnormality occurs in the circuit, it outputs a zero-sequence current on the secondary side of the zero-sequence current transformer 6, so that the low-voltage control module 4 connected to the zero-sequence current transformer 6 outputs an alarm signal. The multi-functional fire detector 9 is powered by any one of the three-phase voltages and is connected to the low-voltage control module 4 and the display screen 3 for communication.

[0064] Optionally, the multi-function fire detector 9 can also be replaced with at least one of the following: a fault arc detector, a fault arc protector, and a temperature sensor.

[0065] The embodiments of the present invention also include at least a backup power supply 5, which is connected to the low-voltage control module 4, the display screen 3, and the multi-circuit control terminal 20 respectively, to provide backup power for the low-voltage control module 4, the display screen 3, and the multi-circuit control terminal 20 when there is a power outage, to ensure that the main modules of the distribution box work normally, and to reduce and avoid power outage losses.

[0066] The embodiments of the present invention also include at least a partition 11, which is used to be mounted on the housing 19 by a support frame 18 to facilitate the installation of unit modules. The gap between the partition 11 and the rear wall of the housing 19 can be used to arrange wiring.

[0067] The embodiments of the present invention further include at least a support frame 18, which is used to mechanically connect the rear wall of the housing and the partition 11, and to fix the partition 11, which is used to install related modules.

[0068] Optionally, the display screen includes at least one of the following: a touch screen, an LCD screen, an LED screen, and an OLED screen.

[0069] The distribution box provided in at least one embodiment of the present invention also includes a door lock 1, which is used to protect the box body and the box door and prevent personnel from opening the box door at will, causing abnormalities or safety accidents.

[0070] The distribution box features a modular design combining composite switches and multi-circuit control terminals, resulting in a simple structure, small size, and multiple branch circuits. This enhances the controllability and scalability of the distribution box, which boasts high integration and intelligence. Furthermore, the distribution box eliminates the need for complex wiring connections during assembly, resolving the issues of complex and messy wiring in existing technologies. This makes installation and disassembly more convenient and faster, significantly improving the assembly and maintenance efficiency of the entire distribution box product, effectively increasing production efficiency, and meeting the ever-increasing power distribution demands of users.

[0071] Example 3

[0072] Figure 12 The diagram shows the structure of the distribution box provided in Embodiment 3 of the present invention. The same parts as in Embodiment 2 are referred to by the same reference numerals. The differences are described below. Compared with Embodiment 1, this embodiment reduces the self-backup power supply 5 and the connection with the self-backup power supply 5 is reduced. The distribution box does not have a power failure protection function.

[0073] Example 4

[0074] Figure 13 The diagram shows the structure of the distribution box provided in Embodiment 4 of the present invention. The same parts as in Embodiment 2 are referred to by the same reference numerals. The differences are described below. Compared with Embodiment 2, this embodiment reduces the surge protector 14 and the connection with the surge protector 14 is reduced. The distribution box does not have lightning protection function.

[0075] Example 5

[0076] Figure 14 The diagram shows the structure of the distribution box provided in Embodiment 5 of the present invention. The same parts as in Embodiment 2 are referred to by the same reference numerals. The differences are described below. Compared with Embodiment 3, this embodiment reduces the number of multi-functional fire detectors 9 and the number of connections to the multi-functional fire detectors 9. Accordingly, the distribution box does not have fire protection function.

[0077] Example 6

[0078] Figure 15 The diagram shows the structure of the distribution box provided in Embodiment Six of the present invention. The same parts as in Embodiment Two are referred to by the same reference numerals. The differences are described below. Compared with Embodiment One, this embodiment reduces the number of multi-functional fire detectors 9 and zero-sequence current transformers 6, and also reduces the number of connections to the multi-functional fire detectors 9 and zero-sequence current transformers 6. Accordingly, the distribution box does not have fire prevention and zero-sequence current abnormality monitoring functions.

[0079] Example 7

[0080] Figure 16The diagram shows the structure of the distribution box provided in Embodiment 7 of the present invention. The same parts as in Embodiment 2 are marked with the same reference numerals. The differences are described below. Compared with Embodiment 1, this embodiment reduces the weak current control module 4 and the current transformer 12, and simultaneously reduces the connection with the weak current control module 4 and the current transformer 12. Accordingly, the distribution box does not have fire prevention and zero-sequence current abnormality monitoring functions.

[0081] Example 8

[0082] Figure 17 This diagram illustrates the structure of a distribution box according to Embodiment 8 of the present invention. The same reference numerals are used for parts identical to those in Embodiment 2. Only the differences will be described below. The distribution box in this embodiment includes a fuse 7, a DC power supply 8, an incoming circuit breaker 10, an incoming copper busbar 13, an incoming branch terminal 15, a PE branch terminal 16, a composite switch 17, and a multi-circuit control terminal 20. All of the above-mentioned module units are identical to those in Embodiment 8. Figure 3 The connection relationship remains the same regardless of the different positions within the enclosure. Figure 3 The same applies; the composite switch 17 and the multi-circuit control terminal 20 are distributed on both sides of the lower half of the enclosure, or they can be distributed on one side depending on the number. The specific positions can be adjusted as needed. Under the enclosure size conditions of this example, the example can be expanded to a maximum of 48 composite switches.

[0083] Optionally, the distribution box can also be equipped with a multi-functional fire detector 9 or a self-contained power supply 15 to meet different user needs.

[0084] The distribution box equipped with a composite switch provided in Embodiments 2 to 8 of the present invention can be arbitrarily added and freely combined with the self-provided power supply 5, surge protector 14, multi-functional fire detector 9, zero-sequence current transformer 6, multi-functional fire detector 9, current transformer 12, and weak current control module 4 based on Embodiment 2 to meet different user needs.

[0085] The composite switch and distribution box equipped with the composite switch provided by the eight embodiments of the present invention have the following beneficial effects: By adopting a modular and split design, including a circuit breaker module, a contact module, and a control module, the composite switch effectively solves the problems of mixed strong and weak current areas, weak anti-interference, poor protection accuracy, and the still existing power distribution safety hazards in the prior art. This makes production, debugging, and maintenance more convenient, and further improves interchangeability, maintainability, and production efficiency. The modular design of each part facilitates the production and maintenance of the distribution box. The use of the composite switch in conjunction with the multi-circuit control terminal greatly reduces the size of the distribution box, reduces the types and volume of modules, and improves expandability, interchangeability, and maintainability. Installation and connection are faster and more accurate, and no additional complex external connection lines are required. It is only necessary to directly assemble and connect the corresponding modules on the distribution box according to the needs, which improves the controllability and expandability of the distribution box. The distribution box has a simple structure, small size, multiple branch lines, high integration and intelligence, meets different power distribution needs, solves the problem of complex and messy strong and weak current wiring in the prior art, and makes installation and disassembly faster, improving the assembly and maintenance efficiency of the entire distribution box product.

[0086] The following points need to be explained:

[0087] (1) Unless otherwise defined, the same reference numerals in the embodiments of the present invention and the accompanying drawings have the same meaning.

[0088] (2) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0089] (3) For clarity, some structures in the drawings used to describe embodiments of the present invention may be enlarged or reduced, that is, these drawings are not drawn to actual scale.

[0090] (4) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0091] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A composite switch, characterized in that, The composite switch adopts a modular split design, dividing the strong and weak current circuits of the composite switch into zones. The composite switch includes a protection module (1751), a control module (1750), and a communication acquisition and drive module (1752). The protection module (1751) and the control module (1750) are mechanically driven connected. The communication acquisition and drive module (1752) and the protection module (1751) are mechanically driven connected and / or electrically connected. The communication acquisition and drive module (1752) and the control module (1750) are electrically connected. The protection module (1751) is connected to the load power supply, the control module (1750) is connected to the load, and the communication acquisition and drive module (1752) is connected to an external communication acquisition device. The protection module (1751) includes a switching device, a mechanical drive device, an electromagnetic trip unit (1704), and an arc extinguishing device; the control module (1750) includes an electromagnetic drive device; the communication acquisition and drive module (1752) includes a control circuit board (1714), a current sensing device, and a mechanical drive device, and acquires, controls, and drives the status information of the switching device, the electromagnetic drive device, the current sensing device, and the mechanical drive device through the control circuit board (1714); The protection module (1751) includes a handle (1702), a push rod (1729), and a micro switch push rod (1732), with one end of the push rod (1729) exposed at the lower end of the protection module (1751). The control module (1750) includes a micro switch (1723) and a second connector (1721). The micro switch (1723) is mechanically driven to the handle (1702) via the micro switch push rod (1732), transmitting the handle's closing status signal to the communication acquisition and drive module (1752). The communication acquisition and drive module (1752) includes a first plug-in terminal (1715), a second plug-in terminal (1717), a fifth connector (1736), and a shift fork (1731). The shift fork (1731) is mechanically driven by the push rod (1729) and drives the push rod (1729) to move up and down. It is also driven by the transmission device to connect to the handle (1702). The fifth connector (1736) is electrically connected to the fourth connector (1735) at the first connection point (175207) through the first fastener (1733). The fifth connector (1736) is electrically connected to the second connector (1721) at the second connection point (175206) through the second fastener (1734). The communication acquisition drive module (1752) is electrically connected to the control module (1750) through the second plug-in terminal (1717) to acquire and control electrical signals.

2. The composite switch according to claim 1, characterized in that, The protection module (1751) also includes an auxiliary lever (1730), a hook spring (1728), a moving contact seat (1713), a jump rod (1703), a buckle (1712), and a connecting shaft (1727); the switch moving contact (1705) is electrically connected to the bimetallic strip (1709); the switch stationary contact (1706) is electrically connected to the electromagnetic trip unit (1704) and the arc extinguishing grid (1707) respectively; the push rod (1729) is drivenly connected to the auxiliary lever (1730), and the auxiliary lever (1730) The spring (1703) is driven to the lever (1703), the lever (1703) is driven to the moving contact seat (1713), the lever (1703) is driven to the bimetallic strip (1709) via the hook spring (1728); the moving contact seat (1713) is driven to the switch moving contact (1705), the moving contact seat (1713) is driven to the lever (1703); the lever (1703) is driven to the handle (1702) via the connecting shaft (1727).

3. The composite switch according to claim 1, characterized in that, The control module (1750) further includes a second drive mechanism (1716), which is drivenly connected to the moving contact (1719) and electrically connected to the second plug-in terminal (1717), which is electrically connected to the micro switch (1723).

4. The composite switch according to claim 1, characterized in that, The communication acquisition drive module (1752) further includes a composite switching current transformer (1710), a first drive mechanism (1711), and a control circuit board (1714); the composite switching current transformer (1710) is sleeved on at least one of the first connector (1720), the second connector (1721), the third connector (1722), the fourth connector (1735), and the fifth connector (1736); the composite switching current transformer (1710) is electrically connected to the control circuit board (1714); the control circuit board (1714) is electrically connected to the first drive mechanism (1711) and / or the second drive mechanism (1716), and the control circuit board (1714) is electrically connected to the micro switch (1723) through the second plug-in terminal (1717); the shift fork (1731) corresponds to the first drive mechanism (1711) and / or the push rod (1729).

5. A distribution box, comprising the composite switch as described in any one of claims 1-4, further comprising a box body (19) and a box door (2), wherein the box body (19) is provided with at least one inlet and at least one outlet, and the box body (19) and the box door (2) are rotatably connected by a hinge (23), characterized in that, The door (2) is equipped with a display screen (3). The enclosure (19) contains a fuse (7), a DC power supply (8), an incoming circuit breaker (10), an incoming copper busbar (13), an incoming branch terminal (15), a PE branch terminal (16), a composite switch (17), and a multi-circuit control terminal (20). The display screen (3) is connected to the DC power supply (8) and to the multi-circuit control terminal (20) via a communication cable. At least one composite switch (17) is plugged into the multi-circuit control terminal (20) via a first plug-in terminal (1715), and a second wire clamp (1726) is electrically connected to the output end of the incoming branch terminal (15). The fuse (7) is connected to the circuit between the incoming circuit breaker (10) and the multi-circuit control terminal (20). The voltage output of any phase of the incoming circuit breaker (10) is converted and output as DC voltage by the DC power supply (8). The output terminal of the power supply (8) is electrically connected to the multi-circuit control terminal (20) and the display screen (3) respectively; the incoming circuit breaker (10) is connected to the input terminal of the incoming branch terminal (15) through the incoming copper busbar (13), and is electrically connected to the composite switch (17) after being branched by the incoming branch terminal (15); the PE branch terminal (16) is electrically connected to the PE ground of the enclosure (19).

6. The distribution box according to claim 5, characterized in that, It also includes a current transformer (12) and a low-voltage control module (4). The current transformer (12) is connected to the incoming circuit breaker (10) and the incoming copper busbar (13) and is electrically connected to the low-voltage control module (4). The low-voltage control module (4) is connected to the display screen (3) and the multi-circuit control terminal (20) through communication, and is electrically connected to the DC power supply (8) and the incoming circuit breaker (10).

7. The distribution box according to claim 6, characterized in that, It also includes a surge protector (14), the incoming line of which is taken from the incoming copper busbar (13), the N line of which is taken from the N branch terminal (21), and the PE output line of which is electrically connected to the PE branch terminal (16).

8. The distribution box according to claim 7, characterized in that, It also includes a zero-sequence current transformer (6) and a multi-functional fire detector (9). The zero-sequence current transformer (6) is installed on the line between the incoming line and the incoming line circuit breaker (10) and is electrically connected to the weak current control module (4). The multi-functional fire detector (9) is electrically connected to the weak current control module (4) and the display screen (3) through communication.

9. The distribution box according to claim 8, characterized in that, It also includes a backup power supply (5), which is electrically connected to the low-voltage control module (4), the display screen (3), and the multi-loop control terminal (20).

10. The distribution box according to any one of claims 5-8, characterized in that, The housing (19) is provided with a partition (11) and a C-shaped support frame (18). The partition (11) is used to install the corresponding unit module. The C-shaped support frame (18) is used to mechanically connect the housing (19) and the partition (11) and fix the partition (11).

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