Intelligent relay

Abstract

The utility model relates to the technical field of electric appliances, and discloses an intelligent relay. The intelligent relay comprises a shell, a pole structure, an electromagnetic assembly, a conducting metal bar and a wiring assembly, the pole structure comprises a first pole and a second pole, and the first pole and the second pole are both arranged in the shell; the electromagnetic assembly is arranged in the shell and located between the first pole and the second pole. The conducting metal bar is telescopically arranged on the electromagnetic assembly; the wiring assembly comprises a first binding post and a second binding post, one end of the first binding post penetrates through the shell to be electrically connected with the first pole, one end of the second binding post penetrates through the shell to be electrically connected with the second pole, and the other end of the first binding post and the other end of the second binding post are both electrically connected with an external power supply; in the working state, the pole structures are electrically connected with the conducting metal bars, in the non-working state, the pole structures are staggered with the conducting metal bars, the space structure occupied by an electrical system is optimized, the number and types of power devices used in a power supply loop are reduced, the structural design is compact, the structure is simple, the size is small, and the material cost is reduced. And the assembly cost of the intelligent relay is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to an intelligent relay. Background Technology

[0002] In the fields of electrical and industrial control, relays are widely used and play an important role as a control element in switching circuits and safety protection; while current sensors are commonly used current measuring devices, usually used to measure the current flowing through relays.

[0003] CN203055790U discloses a high-voltage DC relay with an integrated current sensor. This integrates the current sensor into the relay, making the relay smaller than a separate unit, thus improving user convenience. While this structure reduces size and improves usability to some extent, it directly stacks the current sensor within the relay, failing to save on internal power components. Therefore, it doesn't reduce the relay's overall size and results in a higher cost due to the increased variety of power components in the power supply circuit. Utility Model Content

[0004] The main purpose of this utility model is to provide an intelligent relay, which aims to solve the technical problems of the large variety and high cost of power devices in the power supply circuit of existing relays.

[0005] To achieve the above objectives, this utility model provides an intelligent relay, which includes a housing;

[0006] The electrode structure includes a first electrode and a second electrode for measuring the current of the intelligent relay, both the first electrode and the second electrode are disposed within the housing;

[0007] An electromagnetic component is disposed within the housing and located between the first pole and the second pole.

[0008] A conductive metal busbar is provided, which is retractably mounted on the electromagnetic component;

[0009] A wiring assembly includes a first terminal and a second terminal. One end of the first terminal passes through the housing and is electrically connected to a first electrode post, and the other end of the first terminal is electrically connected to an external power source. One end of the second terminal passes through the housing and is electrically connected to a second electrode post, and the other end of the second terminal is electrically connected to the external power source.

[0010] In the working state, the electrode structure is electrically connected to the conductive metal busbar; in the non-working state, the electrode structure is offset from the conductive metal busbar.

[0011] Furthermore, in one embodiment, both the first pole and the second pole are L-shaped structures, and the L-shaped openings of the first pole and the second pole are arranged in opposite directions.

[0012] Furthermore, in one embodiment, the first pole post is provided with a first stationary contact on the side facing the conductive metal busbar, the second pole post is provided with a second stationary contact on the side facing the conductive metal busbar, and the conductive metal busbar is provided with a first moving contact and a second moving contact respectively corresponding to the first stationary contact and the second stationary contact.

[0013] Furthermore, in one embodiment, the electromagnetic component includes a coil, a fixed insulating base, a connecting rod, and a reset elastic element. The fixed insulating base is disposed within the housing, the coil is sleeved on the outer side wall of the fixed insulating base, one end of the connecting rod is retractably disposed within the fixed insulating base, the reset elastic element is sleeved on the connecting rod, and both ends of the reset elastic element are respectively disposed on the fixed insulating base and the conductive metal busbar.

[0014] Furthermore, in one embodiment, the fixed insulating base includes a first insulating plate, a second insulating plate, and a connecting ring. The first insulating plate and the second insulating plate are respectively disposed on both ends of the connecting ring. The coil is sleeved on the outer side wall of the connecting ring, and the connecting rod is telescopically disposed inside the connecting ring.

[0015] Furthermore, in one embodiment, the smart relay further includes an encapsulating colloid disposed within the housing, and the first insulating plate is disposed on the encapsulating colloid.

[0016] Furthermore, in one embodiment, the second terminal is a shunt made of a metallic material, and the second terminal is used to measure the current of the smart relay.

[0017] Furthermore, in one embodiment, the smart relay further includes a thermistor disposed on the second terminal.

[0018] Furthermore, in one embodiment, the intelligent relay further includes a control structure, which includes a printed circuit board and a plurality of pins. The printed circuit board is disposed inside the housing, one end of the plurality of pins is disposed on the printed circuit board, and the other end of the plurality of pins extends out of the housing. The coil, the second pole, and the thermistor are all electrically connected to the printed circuit board.

[0019] Furthermore, in one embodiment, the smart relay further includes multiple wires, and the coil, the second pole, and the thermistor are all electrically connected to the printed circuit board through the wires.

[0020] In the technical solution provided by this utility model, a pole structure is set inside the housing. The pole structure includes a first pole and a second pole, and the second pole has the functions of measuring the current and conductivity of the intelligent relay. An electromagnetic component is set inside the housing and located between the first pole and the second pole. A conductive metal busbar is retractably set on the electromagnetic component. The wiring component includes a first terminal and a second terminal. One end of the first terminal passes through the housing and is electrically connected to the first pole, and the other end of the first terminal is electrically connected to an external power source. One end of the second terminal passes through the housing and is electrically connected to the second pole, and the other end of the second terminal is electrically connected to an external power source. In the working state, the pole structure is electrically connected to the conductive metal busbar to realize the circuit conduction. In the non-working state, the pole structure is offset from the conductive metal busbar to realize the circuit disconnection. The second terminal can be used as a power device to measure the current of the smart relay, and it can also be used as a terminal in the smart relay. This optimizes the space occupied by the electrical system, reduces the number and types of power devices used in the power supply circuit, and makes the structure compact, simple and small in size. Compared with the traditional electrical architecture, it reduces material costs and also reduces the assembly costs of the smart relay during use. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a cross-sectional view of an intelligent relay according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of an intelligent relay without its housing, according to one embodiment of the present invention.

[0025] Figure 4 This is a side view of an embodiment of the present invention, showing a smart relay without its housing.

[0026] Figure 5 This is a schematic diagram of the structure of an intelligent relay according to an embodiment of the present invention.

[0027] Among them, 100 is the intelligent relay; 10 is the housing; 20 is the pole structure; 201 is the first pole; 202 is the second pole; 203 is the first stationary contact; 204 is the second stationary contact; 205 is the first sampling point; 206 is the second sampling point; 30 is the electromagnetic component; 301 is the coil; 302 is the fixed insulating base; 303 is the connecting rod; 304 is the reset elastic element; 305 is the first insulating plate; 306 is the second insulating plate; 307 is the connecting ring; 308 is the convex ring; 309 is the convex edge; 40 is the conductive metal busbar; 401 is the first moving contact; 402 is the second moving contact; 50 is the wiring assembly; 501 is the first terminal; 502 is the second terminal; 60 is the encapsulating colloid; 70 is the thermistor; 80 is the control structure; 801 is the printed circuit board; 802 is the guide pin; and 90 is the wire. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0029] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Please refer to Figures 1-5 An embodiment of this utility model discloses an intelligent relay 100.

[0032] In one embodiment, such as Figures 1-5 As shown, the intelligent relay 100 includes a housing 10, a pole structure 20, an electromagnetic assembly 30, a conductive metal busbar 40, and a wiring assembly 50. Among them,

[0033] The housing 10 is made of plastic to prevent leakage of the intelligent relay 100.

[0034] The pole structure 20 includes a first pole 201 and a second pole 202 with conductive function. The conductor 90 and the second pole 202 are both disposed inside the housing 10. Specifically, the first pole 201 is made of conductive metal material; the second pole 202 is a shunt, which is a short conductor that can be connected to a terminal and is used to measure DC current. It is made based on the principle that a voltage is generated across a resistor when DC current passes through it. The shunt is made of conductive metal material, so the second pole 202 has the dual function of measuring the current of the intelligent relay 100 and also acting as a conductor. That is, a shunt can be used as a power device to measure the current of the intelligent relay 100 and also as a pole in the intelligent relay 100. One power device serves two purposes, saving the number and types of power devices, making the intelligent relay 100 compact, simple in structure and small in size.

[0035] The electromagnetic component 30 is disposed inside the housing 10 and located between the first pole 201 and the second pole 202. The electromagnetic component 30 is used to generate an electromagnetic effect when the intelligent relay 100 is energized.

[0036] The conductive metal busbar 40 is retractably mounted on the electromagnetic component 30. When the intelligent relay 100 is energized, the electromagnetic component 30 generates an electromagnetic effect, and the conductive metal busbar 40 is attracted to the pole post structure 20 under the action of electromagnetic force, so that the intelligent relay 100 works and the second pole post 202 can detect the current when the intelligent relay 100 is working.

[0037] The wiring assembly 50 serves as a medium for connecting the internal and external power sources of the intelligent relay 100. The wiring assembly 50 includes a first terminal 501 and a second terminal 502. One end of the first terminal 501 passes through the housing 10 and is electrically connected to the first pole 201. One end of the second terminal 502 passes through the housing 10 and is electrically connected to the second pole 202. The other ends of both the first terminal 501 and the second terminal 502 are electrically connected to the external power source, so that the external power source provides power to the intelligent relay 100.

[0038] When the first terminal 501 and the second terminal 502 are plugged into an external power source, the external power source supplies power to the first pole 201 and the second pole 202 respectively through the first terminal 501 and the second terminal 502. The electromagnetic component 30 is located between the first pole 201 and the second pole 202, so that a certain voltage is applied to the first pole 201 and the second pole 202 across the electromagnetic component 30, and a certain current flows through the electromagnetic component 30, thereby generating an electromagnetic effect. This causes the retractable conductive metal bar 40, which is mounted on the electromagnetic component 30, to be attracted to the pole structure 20 under the action of electromagnetic force, thus enabling the intelligent relay 100 to work. When the first terminal 501 and the second terminal 502 are unplugged from the external power source, the external power source stops supplying power to the first pole 201 and the second pole 202, the electromagnetic effect of the electromagnetic component 30 disappears, and the conductive metal bar 40 detaches from the pole structure 20 under the action of gravity.

[0039] In this embodiment, by using a shunt as the second terminal 202, the second terminal 202 has the dual function of both measuring the current of the smart relay 100 and conducting electricity. That is, a shunt can be used as a power device to measure the current of the smart relay 100 and also as a terminal in the smart relay 100. This optimizes the space occupied by the electrical system, reduces the number and types of power devices used in the power supply circuit, and makes the smart relay 100 compact, simple and small in size. Compared with the traditional electrical architecture, it reduces material costs and assembly costs during the use of the smart relay 100.

[0040] In one embodiment, a first stationary contact 203 is provided on the surface of the first pole post 201 facing the conductive metal busbar 40, and a second stationary contact 204 is provided on the surface of the second pole post 202 facing the conductive metal busbar 40. The conductive metal busbar 40 is provided with a first moving contact 401 and a second moving contact 402 corresponding to the first stationary contact 203 and the second stationary contact 204, respectively. During operation, the conductive metal busbar 40 is attracted to the pole post structure 20 by electromagnetic force, and the first moving contact 401 and the first stationary contact 204 are connected. The second moving contact 402 and the second stationary contact 204 make contact to achieve electrical connection, so that the intelligent relay 100 works, that is, the circuit of the intelligent relay 100 is turned on; when it is not working, the electromagnetic effect of the electromagnetic component 30 disappears, and the conducting metal busbar 40 is separated from the pole structure 20 under the action of gravity, that is, the first moving contact 401 and the second moving contact 402 are separated from the first stationary contact 203 and the second stationary contact 204, so that the circuit of the intelligent relay 100 is turned off.

[0041] In one embodiment, the electromagnetic component 30 includes a coil 301, a fixed insulating base 302, a connecting rod 303, and a reset elastic element 304. The fixed insulating base 302 is disposed inside the housing 10 and is made of insulating material. The coil 301 is sleeved on the outer wall of the fixed insulating base 302. One end of the connecting rod 303 is retractably disposed inside the fixed insulating base 302. The reset elastic element 304 is sleeved on the connecting rod 303, and both ends of the reset elastic element 304 are respectively disposed on the fixed insulating base 302 and the conductive metal busbar 40. The reset elastic element 304 can be a spring. A spring is a mechanical part that works by utilizing elasticity. A part made of elastic material deforms under the action of external force and returns to its original shape after the external force is removed. In the non-working state, the electromagnetic force disappears, so the reset elastic element 304 returns to its original shape after the electromagnetic force is removed. While the reset elastic element 304 moves away from the pole post structure 20 during the process of returning to its original shape, it pushes the conductive metal busbar 40 away from the pole post structure 20, thereby causing the pole post structure 20 and the conductive metal busbar 40 to be misaligned.

[0042] Furthermore, the fixed insulating base 302 includes a first insulating plate 305, a second insulating plate 306, and a connecting ring 307. The first insulating plate 305 and the second insulating plate 306 are respectively disposed on both ends of the connecting ring 307, so that the fixed insulating base 302 forms an "I" shaped structure, which is simple in structure. The coil 301 is disposed on the outer wall of the connecting ring 307, and the connecting rod 303 is telescopically disposed in the inner ring of the connecting ring 307.

[0043] For example, the inner ring sidewall of the connecting ring 307 is provided with a protruding ring 308, and the distance between the protruding ring 308 and the first insulating plate 305 is greater than the maximum diameter distance between the first moving contact 401 and the first stationary contact 203. One end of the connecting rod 303 is provided with a protruding edge 309, and the other end of the connecting rod 303 passes through the protruding ring 308 and is disposed on the conductive metal busbar 40. The protruding edge 309 is pressed against the protruding ring 308 to prevent the connecting rod 303 from detaching from the fixed insulating seat 302. The connecting rod 303 and the protruding ring 308 are in clearance fit, so that the connecting rod 303 can move up and down along the protruding ring 308, realizing that the connecting rod 303 can be telescopically disposed on the fixed insulating seat 302. The reset elastic element 304 is disposed between the conductive metal busbar 40 and the connecting ring 307, so that when the non-working state, the reset elastic element 304 resets and pushes the conductive metal busbar 40 to move away from the pole post structure 20. When the conductive metal busbar 40 moves to drive the pole post structure 20, it drives the connecting rod 303 disposed on the conductive metal busbar 40 to move downward, so that the conductive metal busbar 40 is misaligned with the pole post structure 20, thereby realizing the circuit cut-off of the intelligent relay 100. Furthermore, since the connecting rod 303 is provided with a protrusion 309, when the connecting rod 303 descends to a certain distance, the protrusion 309 presses against the protrusion ring 308, preventing the connecting rod 303 from continuing to descend. During operation, the conductive metal busbar 40 overcomes the pulling force of the return reset elastic element 304 and is attracted to the pole post structure 20 under the action of electromagnetic attraction, thereby causing the first moving contact 401 and the first stationary contact 203 to engage, and the second moving contact 402 and the second stationary contact 204 to engage, thus realizing the conduction of the circuit of the intelligent relay 100.

[0044] Furthermore, the intelligent relay 100 also includes an encapsulating colloid 60, which is disposed inside the housing 10. The first insulating plate 305 is disposed on the encapsulating colloid 60. The encapsulating colloid 60 is disposed inside the housing 10 through a pseudo-molding infrared receiver head manufacturing process. The encapsulating colloid 60 protects the internal power devices of the intelligent relay 100 from damage by external vibration, and fixes the first insulating plate 305, the first pole 201 and the second pole 202. The first fixed insulation can also be fixed inside the housing 10 by a connecting plate.

[0045] In one embodiment, both the first pole 201 and the second pole 202 are L-shaped. The structures of the first pole 201 and the second pole 202 are simple, and the L-shaped openings of the first pole 201 and the second pole 202 are arranged in opposite directions. The electromagnetic component 30 is disposed between the first pole 201 and the second pole 202. The first stationary contact 203 is disposed on the surface of the short side of the L-shape of the first pole 201 facing the conductive metal busbar 40, and the second stationary contact 204 is disposed on the surface of the short side of the L-shape of the second pole 202 facing the conductive metal busbar 40. This makes the intelligent relay 100 compact, simple, and small in size. The second pole 202 can both measure the current of the intelligent relay 100 and be used as one of the poles of the intelligent relay 100, which saves power devices and makes the intelligent relay 100 small in size. This avoids integrating the current Hall sensor into the existing relay, which does not save on the body structure of the relay and results in a large relay size.

[0046] In one embodiment, the intelligent relay 100 further includes a thermistor 70, which is in close contact with the surface of the second post 202, enabling the thermistor 70 to transmit the temperature of the second post 202 in real time. This allows the intelligent relay 100 to measure not only current but also temperature, expanding the performance of the intelligent relay 100. The thermistor 70 is a type of sensitive element, which is divided into positive temperature coefficient thermistors 70 (PTC) and negative temperature coefficient thermistors 70 (NTC) according to different temperature coefficients. The thermistor 70 is preferably a negative temperature coefficient thermistor 70 (NTC). A typical characteristic of the thermistor 70 is that it is sensitive to temperature and exhibits different resistance values ​​at different temperatures.

[0047] In one embodiment, the intelligent relay 100 further includes a control structure 80, which includes a printed circuit board 801 and a plurality of pins 802. The printed circuit board 801 provides electrical connections for the electronic power devices and is disposed inside the housing 10. One end of the plurality of pins 802 passes through the housing 10 and is disposed on the printed circuit board 801, while the other end of the plurality of pins 802 is located outside the housing 10 and electrically connected to the control board, so as to transmit the current information collected by the second pole 202 to the control board through the pins 802, and then transmit it to the host computer through the control board. The host computer processes and displays the received current data, so that the user can monitor the current information in real time.

[0048] Furthermore, the intelligent relay 100 is electrically connected to the printed circuit board 801 via wires 90, which connect the coil 301, the second pole 202, and the thermistor 70. For example, six pins 802 and six wires 90 are provided. The coil 301, the second pole 202, and the thermistor 70 are each electrically connected to the printed circuit board 801 via two wires. The second pole 202 has a first sampling point 205 and a second sampling point 206. One end of the first wire is located at the first sampling point 205, and the other end is located on the printed circuit board 801. This achieves electrical connection between the first sampling point 205 of the second electrode 202 and the printed circuit board 801; one end of the second wire is set on the second sampling point 206, and the other end of the second wire is set on the printed circuit board 801, thus achieving electrical connection between the second sampling point 206 of the second electrode 202 and the printed circuit board 801. Therefore, the current information measured by the second electrode 202 can be transmitted to the control board through the printed circuit board 801 and the guide needle 802, and then transmitted to the host computer for processing and display through the control board, so that the user can monitor the current information in real time.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An intelligent relay, characterized in that, The intelligent relay includes: case; The electrode structure includes a first electrode and a second electrode for measuring the current of the intelligent relay, both the first electrode and the second electrode are disposed within the housing; An electromagnetic component is disposed within the housing and located between the first pole and the second pole. A conductive metal busbar is provided, which is retractably mounted on the electromagnetic component; A wiring assembly includes a first terminal and a second terminal. One end of the first terminal passes through the housing and is electrically connected to a first electrode post, and the other end of the first terminal is electrically connected to an external power source. One end of the second terminal passes through the housing and is electrically connected to a second electrode post, and the other end of the second terminal is electrically connected to the external power source. In the working state, the electrode structure is electrically connected to the conductive metal busbar; in the non-working state, the electrode structure is offset from the conductive metal busbar.

2. The intelligent relay according to claim 1, characterized in that, Both the first pole and the second pole have an "L" shaped structure, and the "L" shaped openings of the first pole and the second pole are arranged in opposite directions.

3. The intelligent relay according to claim 1, characterized in that, The first pole has a first stationary contact on the side facing the conductive metal busbar, and the second pole has a second stationary contact on the side facing the conductive metal busbar. The conductive metal busbar has a first moving contact and a second moving contact corresponding to the first stationary contact and the second stationary contact, respectively.

4. The intelligent relay according to claim 1, characterized in that, The electromagnetic component includes a coil, a fixed insulating base, a connecting rod, and a reset elastic element. The fixed insulating base is disposed inside the housing, the coil is sleeved on the outer wall of the fixed insulating base, one end of the connecting rod is retractably disposed inside the fixed insulating base, the reset elastic element is sleeved on the connecting rod, and the two ends of the reset elastic element are respectively disposed on the fixed insulating base and the conductive metal busbar.

5. The intelligent relay according to claim 4, characterized in that, The fixed insulating base includes a first insulating plate, a second insulating plate, and a connecting ring. The first insulating plate and the second insulating plate are respectively disposed on both ends of the connecting ring. The coil is sleeved on the outer side wall of the connecting ring, and the connecting rod is telescopically disposed inside the connecting ring.

6. The intelligent relay according to claim 5, characterized in that, The intelligent relay also includes an encapsulating colloid disposed inside the housing, and the first insulating plate is disposed on the encapsulating colloid.

7. The intelligent relay according to claim 1, characterized in that, The second terminal is a shunt, which is made of metal. The second terminal is used to measure the current of the smart relay.

8. The intelligent relay according to claim 4, characterized in that, The intelligent relay also includes a thermistor, which is disposed on the second terminal.

9. The intelligent relay according to claim 8, characterized in that, The intelligent relay also includes a control structure, which includes a printed circuit board and a plurality of pins. The printed circuit board is disposed inside the housing. One end of the plurality of pins is disposed on the printed circuit board, and the other end of the plurality of pins extends out of the housing. The coil, the second pole, and the thermistor are all electrically connected to the printed circuit board.

10. The intelligent relay according to claim 9, characterized in that, The intelligent relay also includes multiple wires, and the coil, the second pole, and the thermistor are all electrically connected to the printed circuit board through the wires.

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