An IoT-connected intelligent circuit breaker with reclosing function

Abstract

The present invention discloses an intelligent circuit breaker with a reclosing switch, which belongs to the technical field of circuit breakers, and includes an IGBT module, a thermal release and a motor release, wherein both ends of the IGBT module are connected to the main circuit and AC is passed through, wherein the IGBT module is composed of two insulated gate bipolar transistors connected in reverse parallel, wherein the gates of the two insulated gate bipolar transistors are connected to the branch. Thus, the AC can enter the emitter from the collector of the insulated gate bipolar transistor. On the other hand, a branch and an IGBT module are arranged in parallel on the main circuit, and a rectifier circuit is connected to the branch, and the gate of the IGBT module is connected, thereby converting the AC of the branch into DC through the rectifier circuit, and serving as the driving current for starting the IGBT module. When a short circuit occurs in the line, the line instantly generates an electromagnetic field, thereby causing the iron core to extend outward, triggering a toggle switch, thereby disconnecting the branch, and keeping the IGBT module disconnected.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an IoT-connected intelligent circuit breaker with a reclosing switch. Background Art

[0002] When a circuit breaker cuts off a current-carrying circuit, an arc often appears between the contacts. The circuit is not truly cut off until the arc is extinguished. The arc between the contacts is actually a gas discharge phenomenon caused by the ionization of neutral particles. After the arc is formed, the arc column temperature is very high, and the medium is ionized, allowing the arc to be maintained and developed.

[0003] At present, the main method of extinguishing arcs for small circuit breakers is to divide long arcs into short arcs, that is, to use grids to divide and extinguish the arcs. This arc extinguishing method is relatively common and relatively cheap. However, due to the large size of the grid, which occupies almost one-third of the internal space of the circuit breaker, it is difficult to further reduce the size and weight of the circuit breaker. At the same time, the grid can only extinguish the arc but cannot prevent the generation of the arc. In fact, it still cannot completely avoid the destructive effect of the arc on the circuit breaker. Summary of the invention

[0004] To this end, the present invention provides an IoT intelligent circuit breaker with a reclosing switch to solve the problem in the prior art that the circuit breaker is too large and generates arcs due to the use of grid segmentation to extinguish the arc.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses an IoT-connected intelligent circuit breaker with a reclosing switch, comprising:

[0007] An IGBT module, with both ends connected to the main circuit, an excitation release arranged on the top, a toggle switch arranged on the top of the excitation release and suitable for triggering the toggle switch, the toggle switch is connected to the branch circuit and arranged on the outside of the housing;

[0008] A thermal release is installed in the housing and is suitable for triggering the toggle switch. The thermal release and the excitation release are both connected in series in a branch circuit. The branch circuit is connected to a rectifier circuit and a gate of an IGBT module. The branch circuit and the IGBT module are connected in parallel to the main circuit.

[0009] The motor release has a power output end which is coaxially connected to the toggle switch. The motor release is provided with an upper control machine which is signal-connected to the motor release.

[0010] Furthermore, the motor release comprises:

[0011] Stepper motor, the main shaft is equipped with a worm gear transmission group;

[0012] A first gear transmission group, wherein the power input end is coaxially connected to the worm gear transmission group, and the power output end of the first gear transmission group is meshingly connected to the second gear transmission group;

[0013] The swing gear set has a power input end that is coaxially connected to the second gear transmission set, and a power output end that is coaxially connected to the toggle switch.

[0014] Furthermore, the thermal release comprises:

[0015] A pull rod, the tail end of which is provided with a magnet, the magnet being slidably arranged in the guide tube, the head end of the pull rod being adapted to abut against a connecting piece, the connecting piece being hinged in the housing and being transmission-connected to the toggle switch;

[0016] The electric heating rack is provided with a guide tube inside, a mounting hole is provided at the connection position between the guide tube and the electric heating rack, and a permanent magnet that repels the magnet is provided in the mounting hole.

[0017] Furthermore, the excitation release comprises:

[0018] A bracket, with a sliding sleeve installed inside, a coil wound around the outside of the sliding sleeve, and the coil connected to the branch line;

[0019] The iron core is slidably inserted in the sliding sleeve, and the end of the iron core is suitable for abutting against the toggle switch.

[0020] Furthermore, the toggle switch includes:

[0021] A wrench is hingedly arranged on the housing, and an end of the wrench is connected to the locking member through a connecting rod;

[0022] The unlocking component has a head connected with the locking component and a rear fixed with a touch rod, which is connected in series to the branch.

[0023] Furthermore, the IGBT module is composed of two insulated gate bipolar transistors connected in reverse parallel, wherein the gates of the two insulated gate bipolar transistors are both connected to the branch.

[0024] Furthermore, the casing is made of carbon fiber.

[0025] Furthermore, the upper control machine includes:

[0026] A machine box, with a communication antenna disposed on the outer side;

[0027] The mainboard is arranged in the machine box and connected to the control panel arranged on the top of the machine box.

[0028] Furthermore, the machine box and the housing are both provided with heat dissipation holes.

[0029] Furthermore, wire crimpers are provided at both ends of the main circuit.

[0030] The present invention has the following advantages:

[0031] The technical solution disclosed in the present invention is to replace the original grid structure with an IGBT module. The IGBT has the characteristics of high input impedance, low on-state voltage drop, high withstand voltage, low on-resistance, high efficiency, high-speed switching, strong large current bearing capacity, high integration, good thermal conductivity, strong insulation, etc. The low-voltage alternating current can be effectively blocked by reverse parallel connection of the insulated gate bipolar transistors in the IGBT module, and no arc will be generated when the current is disconnected. In addition, compared with the grid structure, the IGBT module has a smaller volume and weight, thereby effectively reducing the overall structure of the circuit breaker, thereby solving the problem in the prior art that the circuit breaker is too large and generates arcs due to the use of grid division to extinguish the arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0034] Figure 1 A three-dimensional diagram of the IoT-connected intelligent circuit breaker with reclosing switch provided by the present invention;

[0035] Figure 2 The front view of the IoT intelligent circuit breaker with reclosing function provided by the present invention;

[0036] Figure 3 A three-dimensional diagram of the upper control machine provided by the present invention;

[0037] Figure 4 A front view of the toggle switch provided by the present invention;

[0038] Figure 5 A three-dimensional diagram of the excitation release provided by the present invention;

[0039] Figure 6 A three-dimensional diagram of the thermal release provided by the present invention;

[0040] Figure 7 A three-dimensional diagram of the motor release provided by the present invention;

[0041] Figure 8 This is a schematic diagram of the connection of the IGBT module provided by the present invention;

[0042] Fig. 9 A schematic diagram of the IGBT module structure provided by the present invention;

[0043] In the figure: 1 IGBT module; 2 toggle switch; 21 wrench; 22 connecting rod; 23 locking member; 24 unlocking member; 25 touch rod; 3 excitation release; 31 bracket; 32 sliding sleeve; 33 iron core; 34 coil; 4 thermal release; 41 pull rod; 42 magnet; 43 electric heating rack; 44 mounting hole; 45 connecting piece; 46 guide tube; 5 finishing flow circuit; 6 motor release; 61 stepping motor; 62 worm gear transmission group; 63 first gear transmission group; 64 second gear transmission group; 65 swing gear group; 7 housing; 8 branch; 9 main circuit; 10 upper control machine; 101 machine box; 102 communication antenna; 103 main board; 104 control panel; 01 wire crimper. DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Please refer to Figure 1-Figure 9 The present invention discloses an intelligent circuit breaker with reclosing IoT, including an IGBT module 1, a thermal release 4 and a motor release 6, wherein both ends of the IGBT module 1 are connected to a main circuit 9, and AC power is supplied, wherein the IGBT module 1 is composed of two insulated gate bipolar transistors connected in reverse parallel, wherein the gates of the two insulated gate bipolar transistors are connected to a branch 8. Thus, the AC power can enter the emitter from the collector of the insulated gate bipolar transistor, and on the other hand, a branch 8 and an IGBT module 1 are arranged in parallel on the main circuit 9, and a rectifier circuit 5 is connected to the branch 8, and the gate of the IGBT module 1 is connected, thereby converting the AC power of the branch 8 into DC power through the rectifier circuit 5, and serving as a driving current for starting the IGBT module 1.

[0046] In this embodiment, if Figure 5An excitation release 3 is arranged above the IGBT module 1, and the excitation release 3 is connected to the branch 8. In this embodiment, the toggle switch 2 is arranged above the magnetic release 3, and the toggle switch 2 is connected to the branch 8 and is arranged on the outside of the casing 7, and the casing 7 is made of carbon fiber.

[0047] Specifically, the excitation release 3 includes a bracket 31 and an iron core 33. The iron core 33 is slidably inserted in a sleeve 32, and the sleeve 32 is installed inside the bracket 3. A coil 34 is wound around the outside of the sleeve 32, and the coil 34 is connected to a branch circuit 8. When a short circuit occurs in the line, the coil 34 instantly generates a magnetic flux, thereby causing the iron core 33 to extend outward, triggering the toggle switch 2, thereby disconnecting the branch circuit 8, so that the IGBT module 1 remains in a disconnected state.

[0048] In some embodiments, Figure 6 The thermal release 4 is installed in the housing 7 and is suitable for triggering the toggle switch 2. The thermal release 4 and the excitation release 3 are both connected in series in the branch 8. The branch 8 is connected to the rectifier circuit 5 and the gate of the IGBT module 1. The branch 8 is connected in parallel with the IGBT module 1 on the main circuit 9. The main circuit 9 is provided with a wire presser 01 at both ends for connecting the neutral wire and the live wire of the household circuit.

[0049] Specifically, in this embodiment, the thermistor release 4 includes a pull rod 41 and an electric heating frame 43, wherein a magnet 42 is provided at the tail end of the pull rod 41, and the magnet 42 is slidably arranged in a guide tube 46, and the head end of the pull rod 41 is suitable for abutting against a connecting member 45, and the connecting member 45 is hinged in the housing 7. When the pull rod 41 is pulled back, the connecting member 45 can be used to drive the toggle switch 2 to move, thereby disconnecting the branch circuit 8 and realizing the interruption of the main circuit 9. On this basis, it is further explained that the guide tube 46 is installed on the electric heating rack 43, and the connection position of the guide tube 46 and the electric heating rack 43 is provided with a mounting hole 44, and the electric heating rack 43 is connected in series to the branch 8. When the load is too high, the electric heating rack 43 will emit a large amount of heat due to the action of the current, so that the temperature of the mounting hole 44 increases, and a permanent magnet that repels the magnet 42 is arranged in the mounting hole 44. Due to the temperature increase, the magnetism of the permanent magnet temporarily fails. Therefore, the magnetism of the magnet 42 can be used to make the magnet 42 and the permanent magnet be adsorbed together, and drive the pull rod 41 to pull back, thereby disconnecting the branch and achieving the technical effect of power off.

[0050] In some embodiments, Figure 7 The power output end of the motor release 6 is coaxially connected to the toggle switch 2, and the upper control machine 10 is signal-connected to the motor release 6.

[0051] Specifically, in this embodiment, the motor release 6 includes a stepper motor 61, a first gear transmission group 63 and a swing gear group 65, wherein the main shaft of the stepper motor 61 is installed with a worm gear transmission group 62, the power input end of the swing gear group 65 is coaxially connected to the second gear transmission group 64, and the power output end is coaxially connected to the toggle switch 2. The power input end of the first gear transmission group 63 is coaxially connected to the worm gear transmission group 62, and the power output end of the first gear transmission group 63 is meshingly connected to the second gear transmission group 64.

[0052] In some embodiments, Figure 4 The toggle switch 2 includes a wrench 21 and an unlocking member 24, wherein the wrench 21 is hingedly arranged on the housing 7, and the end of the wrench 21 is connected to the locking member 23 through a connecting rod 22. The head of the unlocking member 24 is hooked with the locking member 23, and the tail is fixedly provided with a touch rod 25, which is connected in series to the branch 8.

[0053] In some embodiments, Figure 3 The upper control machine 10 includes a machine box 101 and a main board 103. A communication antenna 102 is arranged on the outer side of the machine box 101. The communication antenna 102 is connected to the main board 103. The main board 103 is arranged inside the machine box 101 and connected to a control panel 104 arranged on the top of the machine box 101.

[0054] In this embodiment, heat dissipation holes are provided on the machine box 101 and the housing 7. The heat dissipation holes can not only reduce the internal temperature of the machine box 101, but also effectively reduce the weight of the circuit breaker.

[0055] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An IoT-connected intelligent circuit breaker with reclosing function, characterized in that: include: An IGBT module (1) is connected to a main circuit (9) at both ends, an excitation release (3) is arranged above, a toggle switch (2) is arranged above the excitation release (3) and is suitable for triggering the toggle switch (2), the toggle switch (2) is connected to a branch circuit (8) and is arranged outside a housing (7); The excitation release (3) comprises: A bracket (31) is provided with a sliding sleeve (32) inside, a coil (34) is wound around the outside of the sliding sleeve (32), and the coil (34) is connected to the branch line (8); An iron core (33) is slidably inserted in the sliding sleeve (32), and an end of the iron core (33) is suitable for abutting against the toggle switch (2); a thermal release (4) installed in the housing (7) and suitable for triggering the toggle switch (2); the thermal release (4) and the excitation release (3) are both connected in series in a branch (8); the branch (8) is connected to a rectifier circuit (5) and to the gate of the IGBT module (1); and the branch (8) and the IGBT module (1) are connected in parallel to the main circuit (9); The thermal release (4) comprises: A pull rod (41) is provided with a magnet (42) at its tail end, the magnet (42) being slidably disposed in a guide tube (46), the head end of the pull rod (41) being adapted to abut against a connecting member (45), the connecting member (45) being hinged in the housing (7) and being transmission-connected to the toggle switch (2); The electric heating frame (43) is provided with a guide tube (46) inside, a mounting hole (44) is provided at the connection position between the guide tube (46) and the electric heating frame (43), and a permanent magnet that repels the magnet (42) is provided in the mounting hole (44); The motor release (6) has a power output end coaxially connected to the toggle switch (2), and the motor release (6) is provided with an upper control machine (10), and the upper control machine (10) is signal-connected to the motor release (6); The motor release (6) comprises: A stepper motor (61) having a worm gear transmission assembly (62) mounted on its main shaft; A first gear transmission group (63), the power input end of which is coaxially connected to the worm gear transmission group (62), and a power output end of the first gear transmission group (63) is meshingly connected to the second gear transmission group (64); The swing gear set (65) has a power input end coaxially connected to the second gear transmission set (64) and a power output end coaxially connected to the toggle switch (2).

2. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 1, characterized in that: The toggle switch (2) comprises: A wrench (21) is hingedly arranged on the housing (7), and an end of the wrench (21) is connected to a locking member (23) via a connecting rod (22); The unlocking member (24) has a head portion connected to the locking member (23) and a rear portion fixedly provided with a touch rod (25), and the touch rod (25) is connected in series to the branch (8).

3. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 1, characterized in that: The IGBT module (1) is composed of two insulated gate bipolar transistors connected in reverse parallel, wherein the gates of the two insulated gate bipolar transistors are both connected to the branch (8).

4. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 1, characterized in that: The casing (7) is made of carbon fiber material.

5. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 1, characterized in that: The upper control machine (10) comprises: A machine box (101) is provided with a communication antenna (102) on the outside; The main board (103) is arranged in the machine box (101) and is connected to a control panel (104) arranged on the top of the machine box (101).

6. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 5, characterized in that: The machine box (101) and the machine housing (7) are both provided with heat dissipation holes.

7. The IoT-connected intelligent circuit breaker with reclosing function as claimed in claim 1, characterized in that: Wire pressers (01) are provided at both ends of the main circuit (9).

Images