Clamp and equipment for realizing electrical parameter and zero-crossing self-calibration

Abstract

The utility model discloses a clamp and equipment for realizing electrical parameter and zero-crossing self-calibration. The clamp comprises at least one first conductive structure and at least one second conductive structure; the first end of the first conductive structure is connected with a power supply, and the second end of the second conductive structure is connected with a load; the second end of the first conductive structure is used for being connected with the first end of a switch module in an inserted mode, and the first end of the second conductive structure is used for being connected with the second end of the switch module in an inserted mode. According to the technical scheme provided by the embodiment of the utility model, the connection reliability of the external connection wire of the switch module is improved.

Description

A fixture and a device for self-calibrating electrical parameters and zero crossing. Technical Field

[0001] This utility model relates to the field of calibration technology, and in particular to a fixture and a device for self-calibrating electrical parameters and zero crossings. Background Technology

[0002] To ensure the accuracy of switching operations, the switching module needs to undergo zero-crossing self-calibration before leaving the factory. Therefore, the switching module must be connected between the load and the power supply, and zero-crossing self-calibration testing and adjustment must be performed. However, existing connection methods have poor stability and reliability, and the connection process can easily lead to safety accidents. Summary of the Invention

[0003] This invention provides a clamp and a device for self-calibrating electrical parameters and zero crossing, in order to solve the problem of poor connection reliability of the external wiring of the switch module.

[0004] According to one aspect of the present invention, a clamp is provided, comprising: at least one first conductive structure and at least one second conductive structure; a first end of the first conductive structure is connected to a power source, and a second end of the second conductive structure is connected to a load; the second end of the first conductive structure is used for plugging into a first end of a switch module, and the first end of the second conductive structure is used for plugging into a second end of the switch module.

[0005] Optionally, the second end of the first conductive structure includes a connector, and the connector at the second end of the first conductive structure is plugged into and connected to the switch conductive structure at the first end of the switch module; and / or, at least one of the first ends of the second conductive structure includes a connector; and the connector at the first end of the second conductive structure is plugged into and connected to the switch conductive structure at the second end of the switch module.

[0006] Optionally, the connector includes: a connector slot and a connector base plate;

[0007] The insertion slot is disposed on one side of the insertion base plate, and the orthographic projection of the insertion slot on the insertion base plate at least partially overlaps with the insertion base plate; the insertion slot includes at least a first side and a second side disposed opposite to each other, the first side and the second side extending along a first direction Z; the insertion base plate extends along a second direction X, and the first direction and the second direction intersect.

[0008] Optionally, the switch conductive structure includes: a conductive sheet; the conductive sheet is disposed at one end of the switch conductive structure;

[0009] The conductive sheet is used for insertion and connection with the insertion slot; at least a portion of the conductive sheet contacts the first side and the second side of the insertion slot; when clamped, along the second direction X, the first distance between the first side and the second side of the insertion slot is less than or equal to the thickness of the conductive sheet; wherein, the second direction is perpendicular to the first direction.

[0010] Optionally, the connector further includes: an elastic structure, the elastic structure including: a press handle and an elastic element;

[0011] The first end of the elastic element is disposed on the plug-in base plate, and the elastic element extends along the first direction;

[0012] The first end of the pressing handle is connected to the connection between the second side of the insertion slot and the insertion base plate. The second end of the pressing handle is connected to the insertion base plate through the elastic element. The angle between the pressing handle and the insertion base plate is smaller than the angle between the insertion slot and the insertion base plate.

[0013] When the pressing handle is pressed, along the second direction X, the second distance between the first side and the second side of the insertion slot is greater than the thickness of the conductive sheet; the second distance is greater than the first distance.

[0014] Optionally, the clamp further includes: a third conductive structure and at least one fourth conductive structure;

[0015] The first end of the third conductive structure is connected to the neutral point of the power supply, and the second end of the third conductive structure is connected to the first end of the first conductive structure; the first end of the fourth conductive structure is connected to the power supply, and the second end of the fourth conductive structure is connected to the first end of the first conductive structure.

[0016] The third conductive structure includes a first switching unit, and the fourth conductive structure includes a second switching unit; the first switching unit is used to switch the voltage input to the first conductive structure; the second switching unit is used to turn on or off the power supply to the first conductive structure.

[0017] Optionally, the clamp further includes: at least one fifth conductive structure and at least one sixth conductive structure;

[0018] The first end of the fifth conductive structure is connected to the second end of the first conductive structure, and the second end of the fifth conductive structure is connected to the first indicator light; the first end of the sixth conductive structure is connected to the second end of the first conductive structure, and the second end of the sixth conductive structure is connected to the second indicator light.

[0019] The fifth conductive structure includes a third switching unit; the sixth conductive structure includes a fourth switching unit; the third switching unit is used to turn on the first indicator light; the fourth switching unit is used to turn on the second indicator light.

[0020] According to another aspect of the present invention, a device for realizing self-calibration of electrical parameters and zero crossing is provided, comprising: at least two clamps provided in any embodiment of the present invention.

[0021] Optionally, the device for realizing electrical parameters and zero-crossing self-calibration further includes: at least two load boards, each load board including: a switching module and a board control module;

[0022] The switch module includes: a first switch; a first end of the first switch is plugged into and connected to a second end of a first conductive structure of the clamp; a second end of the first switch is plugged into and connected to a first end of a second conductive structure of the clamp; and a second end of the second conductive structure is connected to a load.

[0023] The board control module is connected to the control terminal of the first switch and is used to turn the first switch on or off and to detect the electrical signal when the first switch is on.

[0024] A control module, connected to the board control module, is used to control the board control module to turn on or off the first switch. The control module is also used to control the board control module to perform zero-crossing self-calibration on the first switch according to the electrical signal.

[0025] Optionally, the switch module further includes: a second switch; the clamp further includes: at least one seventh conductive structure;

[0026] The first end of the second switch is plugged into the third end of the first conductive structure of the clamp; the second end of the second switch is plugged into the first end of the seventh conductive structure of the clamp; the second end of the seventh conductive structure is connected to the second load; the second end of the second conductive structure is connected to the first load.

[0027] The board control module is connected to the control terminals of the first switch and the second switch, and is used to turn the first switch or the second switch on or off, and to detect the electrical signal when the first switch and the second switch are on.

[0028] A control module, connected to the board control module, is used to control the board control module to turn on or off the first switch or the second switch. The control module is also used to control the board control module to perform zero-crossing self-calibration on the first switch and / or the second switch according to the electrical signal.

[0029] Optionally, the device for realizing electrical parameters and zero-crossing self-calibration further includes: a switching module;

[0030] The input terminal of the switching module is connected to a standard source and a power supply, and the output terminal of the switching module is connected to the first end of the third conductive structure and the fourth conductive structure of the fixture; the switching module is used to switch the power supply of the standard source or the power supply; the standard source is used to output a fixed voltage signal.

[0031] The standard source is also connected to the board control module of the load board via a current transformer to output a fixed current signal.

[0032] Optionally, the device for realizing electrical parameters and zero-crossing self-calibration further includes: a leakage protection module, connected between the output terminal of the switching module and the first end of the first conductive structure of the fixture; used to detect the current at the output terminal of the switching module.

[0033] The technical solution provided by this utility model allows the switch module to be connected to the fixture via a plug-in connection, enabling the switch module to stably connect the power supply and load. When connecting different switch modules, the plug-in connection method facilitates easier disassembly or replacement of the switch module. Therefore, the fixture provided by this utility model improves the reliability of the connection with the switch module, making the connection less prone to loosening. The fixture also prevents exposed wires at the connection points, optimizes the wiring structure, reduces the probability of wiring errors, and improves connection safety.

[0034] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 is a structural schematic diagram of a clamp provided according to an embodiment of the present utility model;

[0037] Figure 2 is a cross-sectional view of a connector provided according to an embodiment of the present utility model;

[0038] Figure 3 is a schematic diagram of another clamp provided according to an embodiment of the present utility model;

[0039] Figure 4 is a structural schematic diagram of a device for realizing self-calibration of electrical parameters and zero crossing according to an embodiment of the present utility model;

[0040] Figure 5 is a schematic diagram of another device for realizing electrical parameters and zero-crossing self-calibration according to an embodiment of the present utility model;

[0041] Figure 6 is a structural schematic diagram of another device for realizing self-calibration of electrical parameters and zero crossing according to an embodiment of the present utility model;

[0042] Figure 7 is a structural schematic diagram of a standard source provided according to an embodiment of the present utility model;

[0043] Figure 8 is a top view of a device for realizing self-calibration of electrical parameters and zero crossing according to an embodiment of the present utility model;

[0044] Figure 9 is a front view of a device for realizing self-calibration of electrical parameters and zero crossing according to an embodiment of the present utility model;

[0045] Figure 10 is a schematic diagram of a device for realizing self-calibration of electrical parameters and zero crossing according to an embodiment of the present invention. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] This utility model provides a clamp. Figure 1 is a structural schematic diagram of a clamp provided in this utility model embodiment. Referring to Figure 1, the clamp 100 includes: at least one first conductive structure 1 and at least one second conductive structure 2; a first end of the first conductive structure 1 is connected to a power source, and a second end of the second conductive structure 2 is connected to a load 3; the second end of the first conductive structure 1 is used for plugging into a first end of a switch module, and the first end of the second conductive structure 2 is used for plugging into a second end of the switch module.

[0049] The first conductive structure 1 and the second conductive structure 2 are conductive connection structures on the circuit board used to transmit electrical signals. Exemplarily, the first conductive structure 1 and the second conductive structure 2 can be metal connecting wires. Figure 1 exemplarily shows a clamp 100 with three first conductive structures 1 and three second conductive structures 2. The first ends of the three first conductive structures 1 can be respectively connected to the three phases of a power supply. A switching module can be used to connect the second ends of the first conductive structures 1 and the first ends of the second conductive structures 2.

[0050] Specifically, when the switch module needs to undergo power-on testing, such as zero-crossing self-calibration testing, the power supply and load 3 of the switch module must be connected before testing. If the switch module is connected to the load 3 and the power supply via alligator clips, the connection will be unstable, and wiring errors and loosening may easily occur during operation. Furthermore, alligator clips have a small current carrying capacity, and the external conductors are exposed, which may easily lead to personal safety accidents during operation and use.

[0051] In this embodiment of the invention, plug-in connectors are provided at the second end of the first conductive structure 1 and the first end of the second conductive structure 2. The first end of the switch module can be directly plugged into the second end of the first conductive structure 1, and the second end of the switch module can be directly plugged into the second end of the second conductive structure 3. Compared with connection methods such as alligator clips, the plug-in method has a larger contact area, improves current transmission efficiency, and reduces heat generation. Moreover, the plug-in structure is stable, and the connection effect is more reliable.

[0052] For example, the connector can be adaptively adjusted according to the positions of the first conductive structure 1 and the second conductive structure 2. When the first conductive structure 1 and the second conductive structure 2 are arranged sequentially in one direction, the connector can also be arranged sequentially according to the direction of the first conductive structure 1 and the second conductive structure 2. Therefore, during the wiring process of the switch module, wiring confusion is less likely to occur.

[0053] The technical solution provided by this utility model allows the switch module to be connected to the fixture via a plug-in connection, enabling the switch module to stably connect the power supply and load. When connecting different switch modules, the plug-in connection method facilitates easier disassembly or replacement of the switch module. Therefore, the fixture provided by this utility model improves the reliability of the connection with the switch module, making the connection less prone to loosening. The fixture also prevents exposed wires at the connection points, optimizes the wiring structure, reduces the probability of wiring errors, and improves connection safety.

[0054] Figure 2 is a cross-sectional view of a connector provided in an embodiment of the present invention. Referring to Figures 1 and 2, based on the above embodiments, optionally, the second end of the first conductive structure 1 includes a connector 4, and the connector 4 at the second end of the first conductive structure 1 is plugged into and connected to the switch conductive structure at the first end of the switch module; and / or, at least one of the first ends of the second conductive structure 2 includes a connector 4; the connector 4 at the first end of the second conductive structure 2 is plugged into and connected to the switch conductive structure at the second end of the switch module.

[0055] The first and second ends of the switch module can be connected to a switch conductive structure, which is used to be inserted into the connector 4 and clamped by the connector 4.

[0056] For example, the first end of the switch module may include three switch conductive structures, which are respectively inserted into the connectors 4 at the second ends of the three first conductive structures 1. The second end of the switch module may also include three switch conductive structures, which are respectively inserted into the connectors 4 at the first ends of the three second conductive structures 2. The connectors 4 of the first conductive structures 1 and the connectors 4 of the second conductive structures 2 may be the same structure.

[0057] Referring again to Figure 2, based on the above embodiments, optionally, the connector 4 includes: a connector groove 41 and a connector base plate 42. The connector groove 41 is disposed on one side of the connector base plate 42, and the orthographic projection of the connector groove 41 onto the connector base plate 42 at least partially overlaps with the connector base plate 42; the connector groove 41 includes at least a first side surface 411 and a second side surface 412 disposed opposite to each other, and the first side surface 411 and the second side surface 412 extend along a first direction Z; the connector base plate 42 extends along a second direction X, and the first direction Z and the second direction X intersect.

[0058] The first side 411 and the second side 412 can be made of brass, which has the functions of corrosion resistance, oxidation resistance and plug-and-play resistance. The first side 411 is fixed to one side of the plug-in base plate 42, and the second side 412 is movably connected to the plug-in base plate 42. By moving the position of the second side 412, the conductive structure of the switch can be clamped or released.

[0059] When the conductive structure of the switch at the first or second end of the switch module needs to be inserted into the insertion slot 41, the second side 422 can extend along the second direction X, thereby widening the gap between the first side 411 and the second side 412, making it easier for the conductive structure to be inserted into the insertion slot 41. After the conductive structure is inserted into the insertion slot 41, the second side 422 extends in the opposite direction along the second direction X, thereby narrowing the gap between the first side 411 and the second side 412, so that the conductive structure can be clamped by the insertion slot 41.

[0060] This utility model embodiment achieves connection with the switch conductive structure by setting a plug-in component. Furthermore, by setting a first side and a second side, the contact area between the plug-in slot and the switch conductive structure is increased, the current transmission efficiency is improved, the heat generation is reduced, and it has a convenient connection method and a stable connection structure.

[0061] Referring again to Figure 2, based on the above embodiments, optionally, the switch conductive structure includes: a conductive sheet; the conductive sheet is disposed at the end of the switch conductive structure. The conductive sheet is used for insertion and connection with the insertion slot 41; at least a portion of the conductive sheet contacts the first side surface 411 and the second side surface 412 of the insertion slot 41; when clamped, along the second direction X, the first distance between the first side surface 411 and the second side surface 412 of the insertion slot 41 is less than or equal to the thickness of the conductive sheet; wherein, the second direction X is perpendicular to the first direction Z.

[0062] The conductive structure of the switch can be a connection method where a conductive sheet is connected by a wire. For example, the first and second ends of the switch module are led out via wires, and a conductive sheet, which can be a thin conductive metal sheet, is connected to the end of the wire. When the switch module is connected to the clamp 100, the conductive sheet can be directly inserted into the insertion slot 41. The insertion slot 41 fixes the position of the conductive sheet through the first side 411 and the second side 412.

[0063] Referring again to Figure 2, based on the above embodiments, optionally, the connector 4 further includes an elastic structure 43, which includes a pressing handle 431 and an elastic element 432. The first end of the elastic element 432 is disposed on the connector base plate 42, and the elastic element 432 extends along the first direction Z. The first end of the pressing handle 431 is connected to the connection between the second side surface 412 of the connector slot 41 and the connector base plate 42. The second end of the pressing handle 431 is connected to the connector base plate 42 via the elastic element 432. The angle between the pressing handle 431 and the connector base plate 42 is smaller than the angle between the connector slot 41 and the connector base plate 42. When the pressing handle 43 is pressed, along the second direction X, the second distance between the first side surface 411 and the second side surface 412 of the connector slot 41 is greater than the thickness of the conductive sheet; the second distance is greater than the first distance.

[0064] When the pressing handle 431 is not pressed, the elastic element 432 supports the pressing handle 431 and springs it up. At this time, the distance between the first side 411 and the second side 412 of the insertion slot 41 is a first distance, which is small and can be used to clamp the conductive sheet. Exemplarily, the elastic element 432 may include a spring.

[0065] When the pressing handle 431 is pressed, it causes the second side 412 of the insertion slot 41 to move in a second direction X away from the first side 411, increasing the distance between the first side 411 and the second side 412 of the insertion slot 41 to a second distance. At this time, the distance between the first side 411 and the second side 412 is greater than the thickness of the conductive sheet, allowing the conductive sheet to be directly inserted into the insertion slot 41.

[0066] By setting an elastic structure, the conductive sheet can be more easily inserted into the insertion slot. When the handle is pressed down, the distance between the first side and the second side is greater than the thickness of the conductive sheet, which reduces the wear and scratches caused by the conductive sheet during insertion into the insertion slot and improves the service life of the insertion slot and the conductive sheet.

[0067] Figure 3 is a schematic diagram of another fixture provided in an embodiment of the present invention. Referring to Figure 3, based on the above embodiments, the fixture 100 may optionally further include: a third conductive structure 5 and at least one fourth conductive structure 6. The first end of the third conductive structure 5 is connected to the neutral point of the power supply, and the second end of the third conductive structure 5 is connected to the first end of the first conductive structure 1; the first end of the fourth conductive structure 6 is connected to the power supply, and the second end of the fourth conductive structure 6 is connected to the first end of the first conductive structure 1. The third conductive structure 5 includes a first switching unit 51, and the fourth conductive structure 6 includes a second switching unit 61; the first switching unit 51 is used to switch the voltage input to the first conductive structure 1; the second switching unit 61 is used to turn on or off the power supply to the first conductive structure 1.

[0068] The third conductive structure 5 and the fourth conductive structure 6 are connected to the power supply. For example, three fourth conductive structures 6 can be configured to connect to the A, B, and C phases of the power supply, respectively, while the third conductive structure 5 is connected to the N phase of the power supply. When the power supply voltage is 380V, and the first switching unit 51 is off and the second switching unit 61 is on, the first conductive structure 1 can be used to receive 380V AC power. When both the first switching unit 51 and the second switching unit 61 are on, the first conductive structure 1 can be used to receive 220V AC power.

[0069] Therefore, by setting the third conductive structure 5 and the fourth conductive structure 6, the power supply voltage can be switched. When performing zero-crossing self-calibration tests on the switching module, switching the power supply voltage allows for zero-crossing self-calibration tests under two different voltages, resulting in better test performance.

[0070] Referring again to Figure 3, based on the above embodiments, optionally, the fixture 100 further includes at least one fifth conductive structure 7 and at least one sixth conductive structure 8. The first end of the fifth conductive structure 7 is connected to the second end of the first conductive structure 1, and the second end of the fifth conductive structure 7 is connected to the first indicator light; the first end of the sixth conductive structure 8 is connected to the second end of the first conductive structure 1, and the second end of the sixth conductive structure 8 is connected to the second indicator light. The fifth conductive structure 7 includes a third switching unit 71; the sixth conductive structure 8 includes a fourth switching unit 81; the third switching unit 71 is used to turn on the first indicator light; the fourth switching unit 81 is used to turn on the second indicator light.

[0071] The first ends of the fifth conductive structure 7 and the sixth conductive structure 8 can be connected to the second end of the first conductive structure 1 or to the third end of the first conductive structure 1. Figure 3 illustrates, for example, how the first ends of the fifth conductive structure 7 and the sixth conductive structure 8 are connected to the third end of the first conductive structure 1.

[0072] To easily distinguish the different voltages transmitted by the first conductive structure 1, the fifth conductive structure 7 and the sixth conductive structure 8 are connected to different indicator lights, and different voltage levels can be indicated by the first indicator light and the second indicator light.

[0073] For example, when the first conductive structure 1 transmits 380V AC power, the third switch unit 71 can be closed and the fourth switch unit 81 can be closed, causing the first indicator light to illuminate. The first indicator light can be used to indicate 380V AC power. When the first conductive structure 1 transmits 220V AC power, the third switch unit 71 can be closed and the fourth switch unit 81 can be closed, causing the second indicator light to illuminate. The second indicator light can be used to indicate 220V AC power.

[0074] This utility model embodiment also provides a device for realizing self-calibration of electrical parameters and zero crossing. The device for realizing self-calibration of electrical parameters and zero crossing includes at least two clamps provided in any embodiment of this utility model, which have similar beneficial effects to the clamps and will not be described in detail here.

[0075] Figure 4 is a structural schematic diagram of a device for realizing electrical parameter and zero-crossing self-calibration according to an embodiment of the present invention. Referring to Figures 3 and 4, based on the above embodiments, optionally, the device for realizing electrical parameter and zero-crossing self-calibration further includes: at least two load boards 9, each load board 9 including a switch module 91 and a board control module 92. The switch module 91 includes: a first switch 911; a first end of the first switch 911 is plugged into and connected to the second end of the first conductive structure 1 of the clamp 100; the second end of the first switch 911 is plugged into and connected to the first end of the second conductive structure 2 of the clamp 100; the second end of the second conductive structure 2 is connected to the load. The board control module 92 is connected to the control terminal of the first switch 911 and is used to turn the first switch 911 on or off, and to detect the electrical signal when the first switch 911 is on. The control module 10 is connected to the board control module 92 and is used to control the board control module 92 to turn the first switch 911 on or off. The control module 10 is also used to control the board control module 92 to perform zero-crossing self-calibration on the first switch 911 according to the electrical signal.

[0076] Specifically, the zero-crossing self-test of the switching module 91 ensures that each operation of the switching module 91 occurs at the moment of voltage zero-crossing, making the switching time of the switching module 91 more precise and stable. For some circuits with high control precision requirements, such as timing control and phase control circuits, this helps to improve the control precision and stability of the entire system, ensuring that the system operates accurately according to design requirements.

[0077] When the device performs a zero-crossing self-test, each load board 9 is connected to a corresponding clamp 100, so that one end of the load board 9 is connected to the power supply through the clamp 100, and the other end is connected to the load through the clamp 100. For example, the load can be a capacitor, which can be used to simulate actual load conditions. The control module 10 sends a control signal to the board control module 92 of each load board 9, so that the board control module 92 controls the switch module 91 to perform the process of turning on or off. The board control module 92 detects the relationship between the turning on and off time of the switch module 91 and the zero-crossing time of the input voltage, and transmits the test data to the control module 10. The control module 10 judges the state of the switch module 91 and adjusts its turning on or off time.

[0078] Figure 5 is a schematic diagram of another structure of the device for realizing electrical parameters and zero-crossing self-calibration provided by an embodiment of the present invention. Referring to Figures 3 and 5, based on the above embodiments, optionally, the switch module 91 further includes: a second switch 912; the clamp 100 further includes: at least one seventh conductive structure 11. The first end of the second switch 912 is plugged into the third end of the first conductive structure 1 of the clamp 100; the second end of the second switch 912 is plugged into the first end of the seventh conductive structure 11 of the clamp 100; the second end of the seventh conductive structure 11 is connected to the second load 32; the second end of the second conductive structure 2 is connected to the first load 31. The board control module 92 is connected to the control terminals of the first switch 911 and the second switch 912, and is used to turn the first switch 911 or the second switch 912 on or off, and to detect the electrical signal when the first switch 911 and the second switch 912 are on. The control module 10 is connected to the board control module 92 and is used to control the board control module 92 to turn on or off the first switch 911 or the second switch 912. The control module 10 is also used to control the board control module 92 to perform zero-crossing self-calibration on the first switch 911 and / or the second switch 912 according to the electrical signal.

[0079] For example, a switch module 91 may include two switches. When performing zero-crossing self-calibration on the two switches, the first switch 911 and the second switch 912 can be connected to a fixture 100, and then connected to a first load 31 and a second load 32, respectively, through the fixture 100. The board control module 92 controls the first switch 911 and the second switch 912 to turn on or off, thereby detecting the electrical signals of the first switch 911 and the second switch 912 when they are on and off. The control module 10 can determine whether the on / off time of the first switch 911 and the second switch 912 is accurate based on the relationship between the electrical signal and the zero-crossing time of the input voltage. If it is inaccurate, the control module 10 adjusts the on / off time of the first switch 911 or the second switch 912 through the board control module 92 to achieve zero-crossing self-calibration adjustment of the first switch 911 and the second switch 912.

[0080] The load board 9 can also be connected to the display board 12, and the display board 12 can display information such as the on or off time of the first switch 911 and the second switch 912.

[0081] Figure 6 is a schematic diagram of another embodiment of the device for realizing self-calibration of electrical parameters and zero crossing provided by this utility model. Referring to Figures 3 and 6, based on the above embodiments, the device for realizing self-calibration of electrical parameters and zero crossing optionally further includes a switching module 13. The input terminal of the switching module 13 is connected to the standard source 14 and the power supply 15, and the output terminal of the switching module 13 is connected to the first ends of the third conductive structure 5 and the fourth conductive structure 6 of the fixture 100; the switching module is used to switch the power supply of the standard source 15 or the power supply 14; the standard source 15 is used to output a fixed voltage signal. The standard source 15 is also connected to the board control module 92 of the load board 9 through a current transformer 151, for outputting a fixed current signal.

[0082] The switching module 13 includes an intermediate relay 131 and a switch 132. The switch 132 can be used to control the energization or de-energization of the intermediate relay 131 to achieve switching between the standard source 14 and the power supply 15. For example, the output terminal of the power supply 15 can be connected to a main switch 16 to control the power output of the power supply 15.

[0083] Figure 7 illustrates a schematic diagram of a standard source. The standard source 14 can be used to output electrical signals with different voltage, current and phase angle parameters to meet the accuracy requirements of product debugging.

[0084] Before the load board 9 undergoes zero-crossing self-calibration test, the state of the load board 9 can be calibrated using the standard source 14.

[0085] Specifically, the switching module 13 connects the load board 9 and the standard source 14. The standard source 14 inputs a fixed voltage signal to the switching module 91, and the board control module 92 detects the input and output voltage signals of the switching module 91. When there is a difference between the two, it indicates that the voltage of the load board 9 is abnormal. If the switching module 91 in the load board 9 is subjected to zero-crossing self-calibration, a certain error may occur. Therefore, the load board 9 can be adjusted by the control module 10 to enable it to output the correct voltage signal.

[0086] The standard source 14 can also input a fixed current signal to the switching module 91 via the current transformer 141, and the board control module 92 detects the input and output current signals of the switching module 91. When there is a difference between the two, it indicates that the current of the load board 9 is abnormal. Therefore, the load board 9 can be adjusted by the control module 10 to enable it to output the correct current signal.

[0087] This embodiment of the invention achieves the calibration of the electrical parameters of the load board by setting a standard source, so that the input and output electrical parameters can be kept consistent.

[0088] After the load board 9 is calibrated, the switching module 13 connects the path between the load board 9 and the power supply 15, and the control module 10 controls the board control module 92 to turn on the first switch 911 and the second switch 912 in a time-sharing manner to achieve zero-crossing self-calibration of the first switch 911 and the second switch 912.

[0089] For example, the first switch 911 and the second switch 912 may include relays. During the zero-crossing self-calibration detection of the first switch 911 and the second switch 912, the third conductive structure 5 can be turned on or off at the neutral point of the power supply by the first switching unit 51 in a time-division manner, so that the control module 10 can perform common compensation and separate compensation calibration of the first switch 911 and the second switch 912 respectively.

[0090] When performing common compensation calibration, the fifth switch 52 and the sixth switch 53 of the third conductive structure 5 are disconnected, the first load 31 and the second load 32 are not connected to the neutral point, and the first switch 911 and the second switch 912 are also not connected to the neutral point. The control module 10 performs centralized compensation on the three-phase system, putting the three phases of the first load 31 or the three phases of the second load 32 into or out simultaneously to improve the power factor of the three-phase system, which is suitable for situations where the load is basically balanced.

[0091] When performing individual compensation calibration, the fifth switch 52 and the sixth switch 53 of the third conductive structure 5 are closed, the first load 31 and the second load 32 are connected to the neutral point, and the first switch 911 and the second switch 912 are also connected to the neutral point. At this time, the control module 10 performs individual compensation for each phase of the first load 31 or the second load 32, and switches the first load 31 or the second load 32 according to the reactive power demand of each phase, which can more accurately compensate for the reactive power under three-phase unbalanced load.

[0092] Continuing with reference to Figures 3 and 6, based on the above embodiments, optionally, the device for realizing electrical parameters and zero-crossing self-calibration further includes: a leakage protection module 17, connected between the output terminal of the switching module 13 and the first end of the first conductive structure 1 of the clamp 100; used to detect the current at the output terminal of the switching module 13.

[0093] The leakage protection module 17 can be used to detect the current at the output terminal of the switching module 13. For example, when a human body comes into contact with the circuit in the device that realizes electrical parameters and zero-crossing self-calibration, the leakage protection module 17 will quickly detect the leakage current and cut off the power supply in a very short time, thereby avoiding electric shock and reducing the occurrence of electric shock accidents.

[0094] Referring again to Figure 6, based on the above embodiments, optionally, the device for realizing electrical parameters and zero-crossing self-calibration further includes: a temperature detection module 18, which is connected to the temperature detection interface 181 of the fixture 100 and also connected to the control module 10, for detecting the internal temperature of the device for realizing electrical parameters and zero-crossing self-calibration.

[0095] Figure 8 is a top view of a device for implementing electrical parameters and zero-crossing self-calibration according to an embodiment of the present invention. Figure 9 is a front view of a device for implementing electrical parameters and zero-crossing self-calibration according to an embodiment of the present invention. Referring to Figures 6, 8, and 9, based on the above embodiments, Figures 8 and 9 optionally exemplarily show a device for implementing electrical parameters and zero-crossing self-calibration with 20 load plates 9 and 20 loads 3. The device for implementing electrical parameters and zero-crossing self-calibration further includes a voltmeter 19 and an ammeter 20.

[0096] The voltmeter 19 can be connected in parallel to the output of the switching module 13, and the ammeter 20 can be connected in series between the switching module 13 and the leakage protection module 17. Both can be used to detect the current and voltage in the input fixture 100. The ammeter 20 can also be used to determine whether the load 3 is being switched on and off normally by detecting the current in the circuit.

[0097] When the control module 10 controls each load board 9 to perform zero-crossing self-calibration test, the control module can control each load 3 to perform time-sharing cyclic switching, thereby realizing zero-crossing self-calibration of each switching unit in the load board 9, avoiding the difference in product performance caused by inconsistent switching intervals due to manual control.

[0098] The load 3 provided in this embodiment may include a capacitor, which may have two capacitors, namely a first load and a second load. The capacitor has good load characteristics, and using a capacitor for load simulation provides good zero-crossing self-calibration. The mounting base 33 of the load 3 may also be connected to a slide rail for easy movement of the load 3 and to facilitate replacement of the load 3.

[0099] The housing of the self-calibrating device for electrical parameters and zero-crossing provided in this embodiment can be made of aluminum profiles, powder-coated iron plates, epoxy boards, etc. The control module 10 can simultaneously connect to 60 load boards 9 through 4 communication channels, with each channel connecting up to 60 load boards 9. Therefore, this invention can simultaneously perform zero-crossing self-calibration on 240 sets of load boards 9. The control module 10 has a fault recording function; when a fault occurs during the testing of a load board 9, it will promptly record and display the specific location of the corresponding load board 9.

[0100] Figure 10 is a schematic diagram of a device for implementing electrical parameters and zero-crossing self-calibration according to an embodiment of this utility model. Referring to Figure 10, based on the above embodiments, the device for implementing electrical parameters and zero-crossing self-calibration can optionally be powered by power supply 15 or standard source 14. When control module 10 controls the main switch 16 to be turned on, the power supply 15 outputs electrical energy to switching module 13, which can be used to switch the power supply of power supply 15 or standard source 14. After passing through leakage protection module 17, the electrical energy of power supply 15 or standard source 14 is detected by voltmeter 19 and ammeter 20 for voltage and current.

[0101] During electrical parameter calibration, the standard source 14 can collect current through the current transformer 141 and supply power to the load board 9. Simultaneously, the output current value of the standard source 14 is input to the control module 10 to detect and calibrate the input and output currents of the load board 9. The output voltage of the standard source 14 can supply power to the load board 9 through the first switching unit 51 and the clamp 100. Simultaneously, the output voltage value of the standard source 14 is input to the control module to detect and calibrate the input and output voltages of the load board 9.

[0102] During zero-crossing self-calibration testing, the switching module 13 switches the power supply 15, and the first switching unit 51 switches the power supply voltage of the power supply 15. Power is then supplied to the load board 9 and the load 3 via the fixture 100 to perform common-complementary and partial-complementary zero-crossing self-calibration on the switching module in the load board 9. While the electrical parameters and zero-crossing self-calibration equipment are running, temperature detection can also be performed via the temperature detection module 18 to ensure reliable operation of the electrical parameters and zero-crossing self-calibration equipment.

[0103] The device for realizing electrical parameters and zero-crossing self-calibration provided in this embodiment of the utility model may include multiple load boards, which can realize the calibration of the switching modules in multiple load boards.

[0104] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0105] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clamp, characterized in that, include: At least one first conductive structure and at least one second conductive structure; a first end of the first conductive structure is connected to a power source, and a second end of the second conductive structure is connected to a load; the second end of the first conductive structure is used to plug into a first end of a switch module, and the first end of the second conductive structure is used to plug into a second end of the switch module.

2. The clamp according to claim 1, characterized in that, The second end of the first conductive structure includes a connector, which is plugged into the switch conductive structure at the first end of the switch module; and / or, at least one of the first ends of the second conductive structure includes a connector, which is plugged into the switch conductive structure at the second end of the switch module.

3. The clamp according to claim 2, characterized in that, The connector includes: a connector groove and a connector base plate; the connector groove is disposed on one side of the connector base plate, and the orthographic projection of the connector groove onto the connector base plate at least partially overlaps with the connector base plate; the connector groove includes at least a first side and a second side disposed opposite to each other, the first side and the second side extending along a first direction Z; the connector base plate extends along a second direction X, and the first direction and the second direction intersect.

4. The clamp according to claim 3, characterized in that, The switch conductive structure includes: a conductive sheet; the conductive sheet is disposed at the end of the switch conductive structure; the conductive sheet is used for insertion and connection with the insertion slot; at least a portion of the conductive sheet contacts a first side and a second side of the insertion slot; when clamped, along a second direction X, a first distance between the first side and the second side of the insertion slot is less than or equal to the thickness of the conductive sheet; wherein, the second direction is perpendicular to the first direction.

5. The clamp according to claim 4, characterized in that, The connector further includes an elastic structure comprising a pressing handle and an elastic element; a first end of the elastic element is disposed on the connector base plate, and the elastic element extends along a first direction; a first end of the pressing handle is connected to the connection between the second side of the connector slot and the connector base plate, and the second end of the pressing handle is connected to the connector base plate through the elastic element; the angle between the pressing handle and the connector base plate is smaller than the angle between the connector slot and the connector base plate; when the pressing handle is pressed, along the second direction X, the second distance between the first side and the second side of the connector slot is greater than the thickness of the conductive sheet; the second distance is greater than the first distance.

6. The clamp according to claim 1, characterized in that, The fixture further includes: a third conductive structure and at least one fourth conductive structure; a first end of the third conductive structure is connected to the neutral point of the power supply, and a second end of the third conductive structure is connected to the first end of the first conductive structure; a first end of the fourth conductive structure is connected to the power supply, and a second end of the fourth conductive structure is connected to the first end of the first conductive structure; the third conductive structure includes a first switching unit, and the fourth conductive structure includes a second switching unit; the first switching unit is used to switch the voltage input to the first conductive structure; the second switching unit is used to turn on or off the power supply to the first conductive structure.

7. The clamp according to claim 1, characterized in that, The fixture further includes: at least one fifth conductive structure and at least one sixth conductive structure; a first end of the fifth conductive structure is connected to a second end of the first conductive structure, and the second end of the fifth conductive structure is connected to a first indicator light; a first end of the sixth conductive structure is connected to a second end of the first conductive structure, and the second end of the sixth conductive structure is connected to a second indicator light; the fifth conductive structure includes: a third switching unit; the sixth conductive structure includes: a fourth switching unit; the third switching unit is used to turn on the first indicator light; the fourth switching unit is used to turn on the second indicator light.

8. A device for self-calibrating electrical parameters and zero-crossing, characterized in that, include: At least two of the clamps as described in any one of claims 1-7.

9. The device for realizing self-calibration of electrical parameters and zero crossing according to claim 8, characterized in that, The device for realizing electrical parameters and zero-crossing self-calibration further includes: at least two load boards, each load board comprising: a switch module and a board control module; the switch module comprising: a first switch; a first end of the first switch being plugged into and connected to a second end of a first conductive structure of the fixture; a second end of the first switch being plugged into and connected to a first end of a second conductive structure of the fixture; a second end of the second conductive structure being connected to a load; the board control module being connected to the control terminal of the first switch for turning the first switch on or off and detecting the electrical signal when the first switch is on; and a control module being connected to the board control module for controlling the board control module to turn the first switch on or off, the control module also being used to control the board control module to perform zero-crossing self-calibration on the first switch according to the electrical signal.

10. The device for realizing self-calibration of electrical parameters and zero crossing according to claim 9, characterized in that, The switch module further includes: a second switch; the fixture further includes: at least one seventh conductive structure; a first end of the second switch is plugged into and connected to a third end of the first conductive structure of the fixture; a second end of the second switch is plugged into and connected to a first end of the seventh conductive structure of the fixture; a second end of the seventh conductive structure is connected to a second load; a second end of the second conductive structure is connected to a first load; the board control module is connected to the control terminals of the first switch and the second switch, and is used to turn on or off the first switch or the second switch, and to detect the electrical signal when the first switch and the second switch are turned on; a control module is connected to the board control module, and is used to control the board control module to turn on or off the first switch or the second switch, and the control module is also used to control the board control module to perform zero-crossing self-calibration on the first switch and / or the second switch according to the electrical signal.

11. The device for realizing self-calibration of electrical parameters and zero crossing according to claim 9, characterized in that, The device for realizing electrical parameters and zero-crossing self-calibration further includes: a switching module; the input terminal of the switching module is connected to a standard source and a power supply, and the output terminal of the switching module is connected to the first end of the third conductive structure and the fourth conductive structure of the fixture; the switching module is used to switch the power supply of the standard source or the power supply; the standard source is used to output a fixed voltage signal; the standard source is also connected to the board control module of the load board through a current transformer to output a fixed current signal.

12. The device for realizing self-calibration of electrical parameters and zero crossing according to claim 11, characterized in that, The device for realizing electrical parameters and zero-crossing self-calibration further includes: a leakage protection module, connected between the output terminal of the switching module and the first end of the first conductive structure of the fixture; used to detect the current at the output terminal of the switching module.

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