Solid state relay with alternating current signal output and output end conversion functions

Abstract

The utility model provides a solid state relay with alternating current signal output and output end conversion functions, comprising a tube socket, the bottom of the inner wall of which is provided with a plurality of photovoltaic drivers; a plurality of MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) chips, wherein the plurality of MOSFET chips are arranged in the tube seat and are positioned above the plurality of photovoltaic drivers; and the input logic driving part is arranged in the tube seat. The solid state relay with the alternating current signal output and output end conversion functions has the advantages of being small in size, high in reliability and high in environmental adaptability, can simulate the conversion function of an electromagnetic relay, and achieves output conversion dead zone time through a circuit with an integrated chip as a core.

Description

Technical Field

[0001] The utility model relates to the field of solid relay manufacturing, in particular to a solid relay with AC signal output and output terminal conversion functions. Background Art

[0002] With the rapid development of high-tech electronic equipment in China, the miniaturization, high reliability and wide environmental adaptability of high-tech electronic equipment have become an inevitable trend. At present, with the continuous improvement of the usage requirements in the fields of aerospace, high-tech equipment, etc., users' requirements for the miniaturization, high reliability and wide environmental adaptability of relays are becoming increasingly strong.

[0003] At present, to meet the needs of users, traditional AC electromagnetic relays are commonly used to achieve the above functions. However, since traditional electromagnetic relays are mainly composed of mechanical components and their overload capacity depends on metal contacts, they generally have a large volume, and the contacts will gradually wear with the increase of working time, resulting in the reduction of product performance. In addition, electromagnetic relays have weak anti-vibration and shock resistance, low instantaneous overload impact capacity, poor environmental adaptability, limited application scenarios, and cannot meet the requirements of miniaturization, high reliability and wide adaptability.

[0004] Solid relays can meet the requirements of miniaturization, high reliability and wide environmental adaptability, but currently, solid relays only have normally open and normally closed output modes, without a conversion-type AC output mode.

[0005] Therefore, it is necessary to provide a solid relay with AC signal output and output terminal conversion functions to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a solid relay with AC signal output and output terminal conversion functions, which solves the problem that traditional electromagnetic relays are mainly composed of mechanical components and their overload capacity depends on metal contacts, so they generally have a large volume, and the contacts will gradually wear with the increase of working time, resulting in the reduction of product performance.

[0007] To solve the above technical problems, a solid relay with AC signal output and output terminal conversion functions provided by the utility model includes:

[0008] A socket, and a plurality of photovoltaic drivers are arranged at the bottom of the inner wall of the socket;

[0009] A plurality of MOSFET field effect transistor chips, and the plurality of MOSFET field effect transistor chips are all arranged inside the socket and above the plurality of photovoltaic drivers;

[0010] An input logic drive part, and the input logic drive part is arranged inside the socket.

[0011] Preferably, the material of the socket is ceramic and metal.

[0012] Preferably, a plurality of the MOSFET field effect transistor chips are welded inside the socket.

[0013] Preferably, a cover plate is arranged on the top of the socket.

[0014] Preferably, a connecting component is arranged between the socket and the cover plate. The connecting component includes a threaded column, and an installation sleeve is sleeved on the surface of the threaded column.

[0015] Preferably, a rectangular block is connected to one side of the installation sleeve, a connecting rod is connected to the surface of the rectangular block, and one end of the connecting rod is connected to the cover plate.

[0016] Preferably, a threaded sleeve is threadedly connected to the surface of the threaded column and above the installation sleeve.

[0017] Compared with the related art, a solid state relay provided by the present utility model having an AC signal output and output terminal conversion function has the following beneficial effects:

[0018] The present utility model provides a solid state relay having an AC signal output and output terminal conversion function. This device has the characteristics of small volume, high reliability, and strong environmental adaptability. It can simulate the conversion function of an electromagnetic relay, and realizes the output conversion dead time through a circuit with an integrated chip as the core;

[0019] MOSFET field effect transistor chips are adopted. Among them, the normally open output circuit is 10A, 270V a.c. (1KHz - 50KHz), the normally closed output circuit is 0.1A, 270V a.c. (1KHz - 50KHz). The normally open output circuit can withstand an instantaneous overload current impact of 40A (100ms), the normally closed output circuit can withstand an instantaneous overload current impact of 0.4A (100ms), and both the normally open output circuit and the normally closed output circuit can withstand a transient voltage impact of 400V pk. It has the characteristics of low power consumption, fast response speed, and strong anti-interference ability;

[0020] A ceramic socket is adopted, and the sealing method is metal fusion welding seal, which has the characteristics of good heat dissipation, strong anti-vibration and shock resistance, and good corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a first embodiment of a solid state relay provided by the present utility model having an AC signal output and output terminal conversion function;

[0022] Figure 2 is Figure 1 a schematic three-dimensional structure diagram of the whole interior of the device shown;

[0023] Figure 3 Schematic diagram of the socket part

[0024] Figure 4 Application wiring diagram

[0025] Figure 5 For Figure 1 Power supply schematic diagram shown

[0026] Figure 6 Schematic structural diagram of the second embodiment of a solid state relay with AC signal output and output terminal conversion functions provided by the present utility model

[0027] Figure 7 For Figure 6 Enlarged schematic diagram of part A shown

[0028] Reference numerals in the figure: 1, socket; 3, cover plate; 4, connection assembly; 41, threaded post; 42, mounting sleeve; 43, rectangular block; 44, connecting rod; 45, threaded sleeve; 5, MOSFET field effect transistor chip; 6, photovoltaic driver; 7, input logic drive part Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments

[0030] First embodiment

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , wherein Figure 1 Schematic structural diagram of the first embodiment of a solid state relay with AC signal output and output terminal conversion functions provided by the present utility model Figure 2 For Figure 1 Schematic three-dimensional structure diagram inside the whole device shown Figure 3 Schematic diagram of the socket part Figure 4 Application wiring diagram Figure 5 For Figure 1 Power supply schematic diagram shown. A solid state relay with AC signal output and output terminal conversion functions includes

[0032] Socket 1, and a plurality of photovoltaic drivers 6 are arranged at the bottom of the inner wall of the socket 1

[0033] A plurality of MOSFET field effect transistor chips 5, and the plurality of MOSFET field effect transistor chips 5 are all arranged inside the socket 1 and above the plurality of photovoltaic drivers 6

[0034] The input logic driving part 7 is arranged inside the socket 1.

[0035] The socket 1 is made of ceramic and metal.

[0036] The input logic driving part 7 includes an input logic circuit and a driving circuit. The power output part is composed of four MOSFET field effect transistor chips 5 and four photovoltaic drivers 6.

[0037] The logic circuit is a circuit combination with resistors, capacitors, zener diodes, triodes and field effect transistors as the core. After filtering and delaying the input signal, it drives the photovoltaic driver through a light-emitting diode to generate a driving voltage, so as to turn on or off the MOSFET field effect transistor. When the input signal is powered on, the logic circuit will form a dead time through the designed logic delay, so that the driving circuits of the normally closed loop and the normally open loop do not work at the same time. Only after the normally closed loop of the output is turned off, the normally open end of the output is turned on, realizing the output mode conversion function. By adjusting the parameters of the field effect transistor chip 5 and connecting the field effect transistors in reverse series, the output loop can pass an alternating current signal and have a lower impedance at a frequency of 1KHz to 50KHz.

[0038] The input logic driving part 7 is installed on the socket 1 of the power output part, and the input logic driving part 7 is installed on the upper layer, while the power output part is installed on the lower layer. The socket 1 is made of ceramic and metal materials and is sealed into an integral body by parallel seam welding with the cover plate 3. There are 2 input lead-out terminals, 1 control lead-out terminal and 3 output lead-out terminals on the socket 1. The 2 input lead-out terminals are respectively connected to the input logic driving part 1, and the 3 output lead-out terminals are respectively connected to the MOSFET field effect transistor chips 5 of the power output part.

[0039] The output terminal has the functions of AC signal output control and output mode conversion.

[0040] The socket 1 and the cover plate 3 are sealed by parallel seam welding. The socket 1 is made of ceramic and metal materials. The four MOSFET field effect transistor chips 5 of the power output part are welded together with the socket 1.

[0041] Multiple MOSFET field effect transistor chips 5 are welded inside the socket 1.

[0042] A cover plate 3 is arranged on the top of the socket 1.

[0043] The photovoltaic driver 6 includes a second light-emitting diode, a third light-emitting diode, a second resistor, a sixth photovoltaic driver, a seventh photovoltaic driver, a fourth light-emitting diode, a fifth light-emitting diode, a fifth resistor, a second field-effect transistor, an eighth photovoltaic driver, and a ninth photovoltaic driver. The input terminal is connected to the positive electrodes of the second light-emitting diode and the fourth light-emitting diode. The negative electrode of the second light-emitting diode is connected to the positive electrode of the third light-emitting diode. The negative electrode of the third light-emitting diode is connected to the second resistor. The negative electrode of the sixth photovoltaic driver is connected to the positive electrode of the seventh photovoltaic driver. The negative electrode of the fourth light-emitting diode is connected to the positive electrode of the fifth light-emitting diode. The negative electrode of the fifth light-emitting diode is connected to the fifth resistor. The fifth resistor is connected to the drain of the second field-effect transistor. The positive electrode of the sixth photovoltaic driver is connected to the gates of the third field-effect transistor and the fourth field-effect transistor. The negative electrode of the seventh photovoltaic driver is connected to the sources of the sixth field-effect transistor and the seventh field-effect transistor. The positive electrode of the eighth photovoltaic driver is connected to the gates of the fifth field-effect transistor and the sixth field-effect transistor. The negative electrode of the ninth photovoltaic driver is connected to the sources of the fifth field-effect transistor and the sixth field-effect transistor. The second resistor is connected to the source of the second field-effect transistor and the input ground terminal.

[0044] The input terminal is connected to an input module, and a voltage signal is input to the input terminal. The logic circuit realizes a dead time through logical delay, and controls the normally open drive circuit and the normally closed drive circuit not to work simultaneously. When a voltage signal is applied to the input terminal, the normally closed output terminal disconnects first, and the normally open output terminal conducts later. The output terminal is connected to an output module. The parameters of the power field-effect transistor chips used in the normally closed output part and the normally open output part are matched. The output terminal has a low impedance and small loss when conducting.

[0045] Compared with the related technology, a solid-state relay provided by the present invention with an AC signal output and output terminal conversion function has the following beneficial effects:

[0046] The present invention provides a solid-state relay with an AC signal output and output terminal conversion function. This device has the characteristics of small volume, high reliability, and strong environmental adaptability. It can simulate the conversion function of an electromagnetic relay, and realize the output conversion dead time through a circuit with an integrated chip as the core.

[0047] The MOSFET field-effect transistor chip 5 is adopted. The normally open output loop is 10A, 270Va.c. (1KHz - 50KHz), and the normally closed output loop is 0.1A, 270Va.c. (1KHz - 50KHz). The normally open output loop can withstand an instantaneous overload current impact of 40A (100ms), and the normally closed output loop can withstand an instantaneous overload current impact of 0.4A (100ms). Both the normally open output loop and the normally closed output loop can withstand a transient voltage impact of 400Vpk, and have the characteristics of low power consumption, fast response speed, and strong anti-interference ability.

[0048] The socket 1 made of ceramic is sealed by metal fusion welding, which has the characteristics of good heat dissipation, strong anti-vibration and shock resistance, and good corrosion resistance.

[0049] Second Embodiment

[0050] Please refer to Figure 6 and Figure 7 Based on a solid state relay with AC signal output and output terminal conversion functions provided by the first embodiment of the present application, the second embodiment of the present application proposes another solid state relay with AC signal output and output terminal conversion functions. The second embodiment is only a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0051] Specifically, the difference of a solid state relay with AC signal output and output terminal conversion functions provided by the second embodiment of the present application is that between the socket 1 and the cover plate 3, a connection component 4 is provided. The connection component 4 includes a threaded post 41, and a mounting sleeve 42 is sleeved on the surface of the threaded post 41.

[0052] One side of the mounting sleeve 42 is connected with a rectangular block 43, and a connecting rod 44 is connected to the surface of the rectangular block 43. One end of the connecting rod 44 is connected to the cover plate 3.

[0053] The threaded post 41 is connected to one side of the top of the socket 1. The use of the threaded post 41 and the threaded sleeve 45 can fix the mounting sleeve 42 sleeved on the threaded post 41.

[0054] A threaded sleeve 45 is threadedly connected to the surface of the threaded post 41 and above the mounting sleeve 42.

[0055] The working principle of a solid state relay with AC signal output and output terminal conversion functions provided by the present utility model is as follows:

[0056] During use, when connecting the cover plate 3 and the socket 1, first bring the cover plate 3 with the mounting sleeve 42 and the connecting rod 44 into contact with the top of the socket 1. At the same time, the mounting sleeve 42 is sleeved on the surface of the threaded post 41. After placing the cover plate 3, then thread the threaded sleeve 45 onto the threaded post 41.

[0057] Compared with the related art, a solid state relay with AC signal output and output terminal conversion functions provided by the present utility model has the following beneficial effects:

[0058] The present utility model provides a solid state relay with AC signal output and output terminal conversion functions. A connection component 4 is provided between the socket 1 and the cover plate 3, which facilitates the connection and disassembly between the cover plate 3 and the socket 1.

[0059] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A solid-state relay with AC signal output and output terminal conversion functions, characterized in that: include: A tube base, wherein a plurality of photovoltaic drivers are arranged at the bottom of the inner wall of the tube base; A plurality of MOSFET field effect tube chips, wherein the plurality of MOSFET field effect tube chips are all arranged inside the tube holder and located above the plurality of photovoltaic drivers; An input logic driving part is arranged inside the tube seat.

2. The solid-state relay with AC signal output and output terminal conversion functions according to claim 1, characterized in that: The tube base is made of ceramic and metal.

3. The solid-state relay with AC signal output and output terminal conversion functions according to claim 1, characterized in that: A plurality of MOSFET field effect tube chips are welded inside the tube seat.

4. The solid-state relay with AC signal output and output terminal conversion functions according to claim 1, characterized in that: A cover plate is arranged on the top of the tube seat.

5. The solid-state relay with AC signal output and output terminal conversion functions according to claim 4, characterized in that: A connection assembly is arranged between the pipe seat and the cover plate. The connection assembly comprises a threaded column. A mounting sleeve is sleeved on the surface of the threaded column.

6. The solid-state relay with AC signal output and output terminal conversion functions according to claim 5, characterized in that: A rectangular block is connected to one side of the installation sleeve, a connecting rod is connected to the surface of the rectangular block, and one end of the connecting rod is connected to the cover plate.

7. The solid-state relay with AC signal output and output terminal conversion functions according to claim 5, characterized in that: A threaded sleeve is threadedly connected on the surface of the threaded column and located above the mounting sleeve.

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