Wiring terminal

Abstract

The utility model discloses a wiring terminal. The wiring terminal comprises a direct-current voltage detection circuit, an alternating-current voltage detection circuit and an indicating device, and the direct-current voltage detection circuit is arranged between the positive electrode and the negative electrode of the wiring terminal and is used for detecting direct-current voltage on the wiring terminal; the AC voltage detection circuit is arranged between the positive electrode and the negative electrode of the wiring terminal, is connected in parallel with the DC voltage detection circuit, and is arranged to detect the AC voltage on the wiring terminal; and the indicating device is respectively connected with the direct-current voltage detection circuit and the alternating-current voltage detection circuit and is set to prompt whether the direct-current voltage or the alternating-current voltage exists on the wiring terminal. The wiring terminal solves the problems that in the using process of the wiring terminal, due to the fact that the purpose of the connector is not marked, misoperation of personnel is easily caused, experimental equipment is damaged, mains supply is short-circuited, or operators get an electric shock.

Description

Technical Field

[0001] This application relates to the technical field of terminal voltage detection, and more specifically, to a terminal. Background Art

[0002] In recent years, quick-connect terminals have become commonly used electrical circuit connection devices in power and electrical research and development laboratories or institutional test platforms due to their high reliability and convenient disassembly and assembly. Taking Anderson connectors as an example, they have strong over-current capacity, a sturdy and durable structure, and the ability to quickly connect and disconnect. They are commonly used for connecting high-voltage DC power supplies and AC power supplies such as mains power in various research and development equipment.

[0003] Among them, taking the research and development test platform of an inverter as an example, multiple quick-connect terminals of the same model but different uses coexist in a test platform, and are respectively used to connect low-voltage DC circuits of 10V - 50V (such as equipment like lithium batteries), high-voltage DC circuits of 200V - 1000V (DC sources of series-connected photovoltaic modules or simulated modules), and 127V - 230V industrial frequency AC circuits (mains power).

[0004] During use, there are often cases where the connectors are not marked for their uses, which easily causes personnel to make incorrect operations and connect different types of voltage circuits. In the lightest case, it may lead to damage to experimental equipment, and in the most serious case, it may cause a short circuit in the mains power. The energy carried by the extremely high mains current causes the metal of the connector contacts to melt and splash, and the melting of the circuit insulation layer may cause electric shock to personnel.

[0005] To avoid such dangers, existing avoidance schemes try to prohibit personnel from plugging and unplugging connectors while the power is on. However, in actual work, due to reasons such as saving time or the working conditions of the equipment not allowing power-off, there are still many personnel who are used to operating while the power is on. There are also some schemes that suggest marking the functions of different-purpose interfaces, but one of the main advantages of quick-connect connectors is their multi-purpose use in various working conditions. Marking the functions of the connectors will limit their use, and it is more likely to cause incorrect operations of mixing different-purpose terminals when personnel do not use them according to the marked uses.

[0006] Therefore, a clear, reliable, and flexible prompting scheme is needed to warn the users whether the current quick-connect connector is in a live circuit, and whether it is an AC circuit or a DC circuit. Summary of the Utility Model

[0007] The main purpose of this application is to provide a terminal to solve the problems that during the use of the terminal, due to the connectors not being marked for their uses, it is easy to cause incorrect operations by personnel, resulting in damage to experimental equipment, short circuit of the mains power, or electric shock to the operator, etc.

[0008] According to one aspect of the present application, a terminal block is provided, including: a DC voltage detection circuit, an AC voltage detection circuit, and an indication device. Among them, the DC voltage detection circuit is arranged between the positive and negative poles of the terminal block and is configured to detect the DC voltage on the terminal block; the AC voltage detection circuit is arranged between the positive and negative poles of the terminal block, is connected in parallel with the DC voltage detection circuit, and is configured to detect the AC voltage on the terminal block; the indication device is respectively connected to the DC voltage detection circuit and the AC voltage detection circuit and is configured to indicate the existence of DC voltage or AC voltage on the terminal block.

[0009] Optionally, the DC voltage detection circuit includes: a plurality of first resistor devices, where the plurality of first resistor devices are connected in series.

[0010] Optionally, the AC voltage detection circuit includes: a capacitor device and a plurality of second resistor devices, where the capacitor device and the plurality of second resistor devices are connected in series.

[0011] Optionally, the capacitor device is connected to the positive pole of the terminal block.

[0012] Optionally, the indication device includes: a first indication device and a second indication device. Among them, the first indication device is configured to be connected in parallel with one of the resistor devices among the plurality of first resistor devices; the second indication device is configured to be connected in parallel with one of the resistor devices among the plurality of second resistor devices.

[0013] Optionally, the first indication device and the second indication device are light-emitting diodes, and the light color of the light-emitting diode corresponding to the first indication device is different from the light color of the light-emitting diode corresponding to the second indication device.

[0014] Optionally, the indication device further includes: a first audio alarm device, which is connected in series with the plurality of first resistor devices.

[0015] Optionally, the indication device further includes: a second audio alarm device, which is connected in series with the plurality of second resistor devices; the audio data types generated by the first audio alarm device and the second audio alarm device are different.

[0016] In the present application, a terminal block is provided. The terminal block can be externally connected to a detection circuit or integrated with a detection circuit. The detection circuit is used to detect whether the current quick-connect joint is energized and whether it is an AC circuit or a DC circuit, so as to achieve the effect of warning the operator during the use of the terminal block. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0018] Figure 1 is a structural block diagram of a terminal according to an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a detection circuit for preventing misoperation of a live terminal according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of a DC voltage detection circuit according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of an AC voltage detection circuit according to an embodiment of the present application;

[0022] Figure 5 is a schematic diagram of the installation of a detection circuit for preventing misoperation of a live terminal according to an embodiment of the present application. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0024] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] Figure 1 is a structural block diagram of a terminal according to an embodiment of the present application, as Figure 1As shown, the terminal block includes: a DC voltage detection circuit 10, an AC voltage detection circuit 12, and an indication device 14, where,

[0027] The DC voltage detection circuit 10 is arranged between the positive and negative poles of the terminal block and is configured to detect the DC voltage on the terminal block.

[0028] The AC voltage detection circuit 12 is arranged between the positive and negative poles of the terminal block, is connected in parallel with the DC voltage detection circuit 10, and is configured to detect the AC voltage on the terminal block.

[0029] The indication device 14 is respectively connected to the DC voltage detection circuit 10 and the AC voltage detection circuit 12, and is configured to indicate the presence of DC voltage or AC voltage on the terminal block.

[0030] Figure 2 is a schematic diagram of a detection circuit for preventing misoperation of a live terminal block according to an embodiment of the present application. As Figure 2 shown, the circuit composed of resistor R1, resistor R2, resistor R3, and resistor R4 is the above-mentioned DC voltage detection circuit 10, which is used to detect whether there is DC voltage on the terminal block. The circuit composed of capacitor C1, resistor R5, resistor R6, resistor R7, and resistor R8 is the above-mentioned AC voltage detection circuit 12, which is used to detect whether there is AC voltage on the terminal block.

[0031] From Figure 2 it can be seen that the above-mentioned DC voltage detection circuit 10 and AC voltage detection circuit 12 are connected between the two ends (i.e., the positive and negative poles) of the terminal block, and the DC voltage detection circuit 10 and the AC voltage detection circuit 12 are connected in parallel.

[0032] According to an optional embodiment of the present application, the DC voltage detection circuit 10 includes: a plurality of first resistor devices, where the plurality of first resistor devices are connected in series.

[0033] Figure 3 is a schematic diagram of a DC voltage detection circuit according to an embodiment of the present application. As Figure 3 shown, resistor R1, resistor R2, resistor R3, and resistor R4 are the above-mentioned first resistor devices.

[0034] From Figure 3 it can be seen that resistor R1, resistor R2, resistor R3, and resistor R4 are connected in series, and resistor R4 is connected in parallel with LED1. Resistor R1, resistor R2, resistor R3, and resistor R4 play a voltage reduction role in the circuit, and the number of resistors can be adjusted according to the actual situation of the circuit.

[0035] According to another optional embodiment of the present application, the AC voltage detection circuit 12 includes: a capacitor device and a plurality of second resistor devices, wherein the capacitor device and the plurality of second resistor devices are connected in series.

[0036] Figure 4 is a schematic diagram of an AC voltage detection circuit according to an embodiment of the present application, as Figure 4 shown, the capacitor C1 is the above-mentioned capacitor device, and the resistors R5, R6, R7, and R8 are the above-mentioned second resistor devices.

[0037] From Figure 4 it can be seen that the capacitor C1, the resistors R5, R6, R7, and R8 are connected in series, and the resistor R8 and the LED2 are connected in parallel. The resistors R5, R6, R7, and R8 play a voltage-reducing role in the circuit, and the number of resistors can be adjusted according to the actual situation of the circuit.

[0038] As an optional embodiment of the present application, the capacitor device is connected to the positive pole of the wiring terminal.

[0039] From Figure 4 it can be seen that the capacitor C1 is arranged on the side close to the input end (i.e., the positive pole) of the wiring terminal.

[0040] In some optional embodiments of the present application, the above-mentioned indicating device 14 includes: a first indicating device and a second indicating device, wherein the first indicating device is arranged to be connected in parallel with one of the plurality of first resistor devices; the second indicating device is arranged to be connected in parallel with one of the plurality of second resistor devices.

[0041] Figure 3 The LED1 in Figure 3 is the first indicating device. From

[0042] it can be seen that the LED1 is connected in parallel with the resistor R4.

[0043] When the DC voltage across the wiring terminal is detected to be higher than 100V, the LED1 in the DC voltage detection circuit lights up, prompting the operator that the current wiring terminal is carrying a high-voltage DC voltage.

[0044] Figure 4 The LED2 in Figure 4 is the second indicating device. From

[0045] When the AC voltage across the terminal block is detected to be higher than 100V, LED2 in the AC voltage detection circuit lights up, and at the same time, LED1 in the DC voltage detection circuit also lights up.

[0046] The AC voltage detection circuit is a capacitor series step-down circuit. Because the AC current can pass through the capacitor, through the capacitor and the step-down resistor, a high level is given to LED2 to make LED2 light up; while the capacitor has an open-circuit effect on the DC current, resulting in the DC current being unable to pass through the AC detection circuit and unable to light up LED2.

[0047] In an alternative embodiment of the present application, the first indicating device and the second indicating device are light-emitting diodes, and the light color of the light-emitting diode corresponding to the first indicating device is different from the light color of the light-emitting diode corresponding to the second indicating device.

[0048] In the embodiment of the present application, the first indicating device LED1 and the second indicating device LED2 are light-emitting diodes, and the colors of LED1 and LED2 are different, which is convenient for reminding the operator whether the current circuit where the terminal block is located is an AC circuit or a DC circuit.

[0049] In the embodiment of the present application, the color of LED1 is blue and the color of LED2 is red. When high-voltage DC is detected, the blue light is on, and when high-voltage AC is detected, the red light and the blue light are on.

[0050] It should be noted that the light colors of LED1 and LED2 can also be other colors, as long as the light colors of LED1 and LED2 are different.

[0051] According to an alternative embodiment of the present application, the indicating device 14 further includes: a first audio alarm device, which is connected in series with a plurality of first resistor devices.

[0052] The first audio alarm device can be a speaker (not shown in the figure). The first audio alarm device is connected in series with resistors R1, R2, R3, and R4. When there is a DC voltage across the terminal block, the first audio alarm device emits an alarm voice to prompt the operator that the current terminal block is with high-voltage DC voltage.

[0053] According to another alternative embodiment of the present application, the indicating device 14 further includes: a second audio alarm device, which is connected in series with a plurality of second resistor devices; the audio data types generated by the first audio alarm device and the second audio alarm device are different.

[0054] The second audio alarm device can be a speaker (not shown in the figure). The second audio alarm device is connected in series with resistors R5, R6, R7, and R8. When there is an AC voltage across the terminal block, both the first audio alarm device and the second audio alarm device emit an alarm voice, prompting the operator that the current terminal block is carrying a high-voltage AC voltage.

[0055] It should be noted that the alarm voices emitted by the first audio alarm device and the second audio alarm device are of different types, which can distinguish whether the voltage across the terminal block is a DC voltage or an AC voltage.

[0056] Through the above design, when the terminal block is connected to a high-voltage power supply, it reminds the operator that the terminal block is carrying high voltage, enables the operator to distinguish the voltage type in a timely manner, effectively prevents electric shock caused by incorrect operation of personnel; and can prevent the operator from misinserting AC terminals and DC terminals, thereby avoiding equipment damage.

[0057] Figure 5 It is a schematic installation diagram of a detection circuit for preventing incorrect operation of a live terminal block according to an embodiment of the present application. As Figure 5 shown, the detection circuit is installed across the terminal block as an independent device.

[0058] It should be noted that the detection circuit can also be integrated on the terminal block, that is, prefabricated in the terminal block during production.

[0059] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used here to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figure. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, a device described as "above" or "over" another device or structure will then be positioned "below" or "under" the other device or structure. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used here will be made.

[0060] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0061] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A terminal block, characterized in that: include: A DC voltage detection circuit, an AC voltage detection circuit and an indicating device, wherein: The DC voltage detection circuit is arranged between the positive and negative electrodes of the wiring terminal and is arranged to detect the DC voltage on the wiring terminal; The AC voltage detection circuit is arranged between the positive and negative electrodes of the wiring terminal, connected in parallel with the DC voltage detection circuit, and is arranged to detect the AC voltage on the wiring terminal; The indicating device is connected to the DC voltage detection circuit and the AC voltage detection circuit respectively, and is configured to indicate the presence of a DC voltage or an AC voltage on the wiring terminal.

2. The connection terminal according to claim 1, characterized in that: The DC voltage detection circuit comprises: a plurality of first resistance devices, wherein: The plurality of first resistance devices are connected in series.

3. The connection terminal according to claim 2, characterized in that: The AC voltage detection circuit includes: a capacitor device and a plurality of second resistor devices, wherein: The capacitive device and the plurality of second resistive devices are connected in series.

4. The connection terminal according to claim 3, characterized in that: The capacitor is connected to the positive electrode of the connection terminal.

5. The connection terminal according to claim 3, characterized in that: The indicating device comprises: a first indicating device and a second indicating device, wherein: The first indicating device is configured to be connected in parallel with one of the plurality of first resistance devices; The second indicating device is configured to be connected in parallel with one of the plurality of second resistance devices.

6. The connection terminal according to claim 5, characterized in that: The first indicating device and the second indicating device are light emitting diodes, and the light color of the light emitting diode corresponding to the first indicating device is different from the light color of the light emitting diode corresponding to the second indicating device.

7. The connection terminal according to claim 3, characterized in that: The indicating device also includes: The first audio alarm device is connected in series with the plurality of first resistor devices.

8. The connection terminal according to claim 7, characterized in that: The indicating device also includes: a second audio alarm device connected in series with the plurality of second resistor devices; The first audio alert device and the second audio alert device generate different types of audio data.

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