CN220400493U - Solid-state relay with temperature control protection - Google Patents
Solid-state relay with temperature control protection Download PDFInfo
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- CN220400493U CN220400493U CN202321942125.7U CN202321942125U CN220400493U CN 220400493 U CN220400493 U CN 220400493U CN 202321942125 U CN202321942125 U CN 202321942125U CN 220400493 U CN220400493 U CN 220400493U
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- state relay
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- 230000001012 protector Effects 0.000 claims abstract description 27
- 230000017525 heat dissipation Effects 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a solid-state relay with temperature control protection, which comprises a shell, a control circuit board, an input control end, an output load end, a photoelectric coupler and a thyristor, wherein the photoelectric coupler and the thyristor are arranged on the control circuit board, the output load end is electrically connected with the thyristor, the input control end is electrically connected with the photoelectric coupler for transmitting input signals, a temperature protector for detecting the working temperature of the solid-state relay is arranged on the control circuit board, the temperature protector cuts off an input circuit between the input control end and the photoelectric coupler when the working temperature reaches a set value, and the thyristor is closed at the moment, so that the function of controlling the solid-state relay to be closed is realized.
Description
Technical Field
The utility model relates to the technical field of piezoelectric devices, in particular to a solid-state relay with temperature control protection.
Background
The solid state relay is a novel contactless switch device, and can achieve contactless and sparkless on-off circuit by utilizing the switching characteristics of semiconductor devices such as a switch triode, a coupler, a silicon controlled rectifier and the like. The existing solid-state relay integrates a plurality of electrical elements such as a silicon controlled rectifier, the working temperature of the solid-state relay can be greatly increased when the load connected with the solid-state relay is overlarge, and when the working temperature of the solid-state relay exceeds a safety range, the safety of the solid-state relay can be reduced, even overload faults can be caused, and thus the electrical elements such as the silicon controlled rectifier can be damaged, and the service life of a product is shortened.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to solve the problems that the working temperature of the solid-state relay is greatly increased when the load of the solid-state relay is overlarge in the prior art, so that the safety of the relay is reduced, even overload faults are caused, and the service life of a product is shortened.
In order to solve the technical problems, the utility model provides a solid-state relay with temperature control protection, which comprises a shell, a control circuit board, an input control end and an output load end, wherein the control circuit board is provided with a photoelectric coupler and a thyristor, the output load end is electrically connected with the thyristor, the input control end is electrically connected with the photoelectric coupler and is used for transmitting an input signal and controlling the on or off of the thyristor, the control circuit board is provided with a temperature protector for detecting the working temperature of the solid-state relay, and the temperature protector is electrically connected between the input control end and the photoelectric coupler and cuts off the input signal transmitted between the input control end and the photoelectric coupler when the working temperature reaches a set value.
In the solid-state relay, the temperature protector is provided with a temperature-sensing bimetallic strip, and the bimetallic strip drives the contacts of the temperature protector to be opened when the station temperature reaches the action temperature.
In the solid-state relay, the input control end comprises an input wiring plug-in unit which is arranged at the top of the shell in a pluggable manner and is connected with the control circuit board, and the input wiring plug-in unit is provided with two wire insertion holes.
In the solid-state relay, the output load end comprises two output wiring terminals respectively arranged in wiring holes at two ends of the shell, the output wiring terminals are composed of a wiring frame and fastening screws, and a conductive plate connected with the control circuit board is fixedly arranged in the wiring frame in a penetrating manner.
In the solid state relay, the housing has a mounting cavity adapted to mount the control circuit board, the control circuit board divides the mounting cavity into an upper cavity and a lower cavity, the thyristor is accommodated in the lower cavity, and the housing includes a heat dissipating bottom plate in contact with the thyristor to transfer heat.
In the solid-state relay, the solid-state relay further comprises a radiator structure which is arranged at the bottom of the shell and is attached to and connected with the radiating bottom plate.
In the solid-state relay, the radiator structure comprises a radiating main body fixed on the lower side of the radiating bottom plate and in an I shape, and a plurality of radiating rows arranged on the side walls of two sides of the radiating main body at intervals, wherein the radiating main body and the radiating rows are integrally formed by an aluminum structure.
In the solid-state relay, the corrugated protrusions are formed on the side surfaces of the two sides of the radiating row.
In the solid-state relay, the bottom of the radiating main body is provided with the installation chute, a fixing frame is arranged in the installation chute, and two opposite positioning hooks are arranged on two sides of the fixing frame.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
1. in the solid-state relay with temperature control protection, the temperature protector is arranged on the control circuit board and connected between the input control end and the photoelectric coupler, so that the temperature protector can detect the working temperature of the solid-state relay, and once the load is overlarge in the use process of a product, the temperature protector can disconnect an input circuit between the input control end and the photoelectric coupler when the working temperature reaches a set value, so that the photoelectric coupler is disconnected to receive and transmit an input signal, and the crystal thyristors are also closed, thereby realizing the effect of controlling the solid-state relay to be closed when the temperature is overhigh and normally opened after the temperature is recovered, and the solid-state relay adopting the technical scheme can cut off the input signal of the input control end through the temperature protector, can meet the milliamp-level current requirement, prevent the solid-state relay from generating overload faults, ensure the operation of the solid-state relay to achieve ideal temperature and energy-saving effect, greatly improve the safety performance of the product and be beneficial to prolonging the service life of the product.
2. The utility model provides a solid-state relay with temperature control protection, wherein the temperature protector uses a bimetallic strip as a temperature control switch of a temperature sensing assembly and is connected to an input circuit between an input control end and a photoelectric coupler, when the relay works normally, the bimetallic strip is in a free state, at the moment, a contact of the temperature protector is in a closed state, so that the input circuit between the input control end and the photoelectric coupler is conducted, when the working temperature of the relay reaches the action temperature of the bimetallic strip, the bimetallic strip is heated to generate internal stress to act rapidly, and the contact is driven to open so as to cut off the input circuit, so that the power supply of the input control end is disconnected, the photoelectric coupler cannot receive an input signal, and therefore the temperature control effect is achieved.
3. In the solid-state relay with temperature control protection, as the power of the thyristor is high, the heat generated in the working process is large, in order to effectively and reliably dissipate the heat of the thyristor, the radiator structure is contacted with a radiating bottom plate at the bottom of the body according to the thyristor and is connected to the radiating bottom plate in a bonding way, the radiator structure consists of a radiating main body of an aluminum structure and a plurality of radiating rows, the radiating rows are arranged on the side walls of the two sides of the radiating main body at intervals along the height direction of the radiating main body, and the heat generated by the thyristor is conducted to the radiator structure through the radiating bottom plate, so that the radiating area can be increased through the radiating rows, the radiating efficiency is improved, the radiating performance of the solid-state relay is reliably improved, and the use stability and safety of the solid-state relay are ensured.
4. In the solid-state relay with the temperature control protection, the plurality of corrugated bulges are formed on the side surfaces of the two sides of the radiating row, so that the radiating area of the radiating row can be increased, the structural strength of the radiating row can be enhanced, the radiating efficiency is improved, and the radiating effect is better.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic perspective view of a solid state relay provided by the present utility model;
FIG. 2 is a schematic cross-sectional view of a solid state relay of the present utility model;
FIG. 3 is a schematic view of a heat sink structure of the present utility model;
FIG. 4 is a schematic circuit diagram of the solid state relay of the present utility model;
reference numerals illustrate: 1. a housing; 11. a heat dissipation base plate; 2. a control circuit board; 3. an input control end; 31. an input wiring plug-in; 4. an output load end; 41. an output connection terminal; 42. a conductive plate; 5. a photocoupler; 6. a thyristor; 7. a temperature protector; 8. a heat sink structure; 81. a heat dissipating body; 82. a heat radiation row; 83. a corrugated protrusion; 9. a fixing frame; 91. and positioning the clamping hook.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
The present embodiment is specifically described below with reference to the accompanying drawings:
the embodiment provides a solid-state relay with temperature control protection as shown in fig. 1-4, which comprises a shell 1, a control circuit board 2, an input control end 3 and an output load end 4, wherein a photoelectric coupler 5 and a thyristor 6 are arranged on the control circuit board 2, the control circuit board 2 is arranged in the shell 1, the output load end 4 is electrically connected with the thyristor 6, the input control end 3 is electrically connected with the photoelectric coupler 5 and is used for transmitting an input signal and controlling the on or off of the thyristor 6, the photoelectric coupler 5 is in circuit connection with the thyristor 6, a temperature protector 7 for detecting the working temperature of the solid-state relay is arranged on the control circuit board 2, and the temperature protector 7 is electrically connected between the input control end 3 and the photoelectric coupler 5 and cuts off the input signal transmitted between the input control end 3 and the photoelectric coupler 5 when the working temperature reaches a set value.
In the above embodiment, the temperature protector 7 connected between the input control end 3 and the photocoupler 5 is disposed on the control circuit board 2, the temperature protector 7 can detect the working temperature of the solid-state relay, in the product use process, once the load is too large, the temperature protector 7 will disconnect the input circuit between the input control end 3 and the photocoupler 5 when the working temperature reaches the set value, thus the photocoupler 5 is disconnected to receive the transmission input signal, the thyristor is also closed, thereby realizing the function of controlling the solid-state relay to be closed when the temperature is too high, and the solid-state relay can be normally opened after the temperature is recovered to be normal.
As a preferred embodiment, the temperature protector 7 has a temperature-sensitive bimetallic strip which drives the contacts of the temperature protector open when the station temperature reaches its operating temperature. Therefore, the temperature protector 7 is a temperature control switch using a bimetallic strip as a temperature sensing element and is connected to an input circuit between the input control end 3 and the photoelectric coupler 5, and referring to a circuit working schematic diagram of the solid state relay shown in fig. 4, when the solid state relay works normally, the bimetallic strip is in a free state, at this time, a contact of the temperature protector 7 is in a closed state, so that an input circuit between the input control end 3 and the photoelectric coupler 5 is conducted, when the working temperature of the solid state relay reaches the action temperature of the bimetallic strip, the bimetallic strip is heated to generate internal stress to act rapidly, and the contact is driven to open so as to cut off the input circuit, so that an input signal and a power supply of the input control end 3 are disconnected, and the photoelectric coupler cannot receive the input signal, thereby playing a role of temperature control protection. The bimetallic strip can automatically reset after the relay cools down, so that the contacts of the temperature protector can also be automatically reset and closed to restore to the normal working state.
The following describes the arrangement of the input control terminal and the output load terminal with reference to fig. 2 and 4:
the input control end 3 comprises an input wiring plug-in unit 31 which is arranged at the top of the shell 1 and connected with the control circuit board 2 in a pluggable manner, the input wiring plug-in unit 31 is provided with two wire inserting holes, the two wire inserting holes are provided with elastic locking blocks for rapidly pressing wires, the wires connected with the power supply of the control end are inserted into the wire inserting holes and locked by the elastic locking blocks to realize rapid installation wiring, and therefore a working voltage source is provided for the solid-state relay. Referring to the schematic circuit diagram of the solid-state relay shown in fig. 4, the input control terminal 3 further includes an input circuit connected to the photocoupler 5, the input signal transmitted to the photocoupler 5 through the input circuit may be a voltage or current signal, and the photocoupler 5 is connected to the thyristor 6 through a driving circuit, so that the photocoupler 5 controls to drive the thyristor 6 to turn on or off according to the input signal, thereby realizing the on or off operation of the solid-state relay.
It is further preferable that the output load end 4 comprises two output connection terminals 41 respectively arranged in connection holes at two ends of the shell 1, the output connection terminals 41 are composed of a connection frame and fastening screws, a conductive plate 42 connected with the control circuit board 2 is fixedly arranged in the connection frame in a penetrating manner, the output load end 4 further comprises an output circuit connected with the thyristor 6 and the output connection terminals 41, a wire connected with the load is fixedly connected with the output connection terminals 41 to realize connection between the load and the solid-state relay, and the thyristor 6 can selectively supply power to the load from a voltage source of the input control end 3 in a conducting state and no longer supplies power to the load in an off state.
In this embodiment, as shown in fig. 2-3, the housing 1 has a mounting cavity suitable for mounting the control circuit board 2, the control circuit board 2 divides the mounting cavity into an upper cavity and a lower cavity, the thyristor 6 is accommodated in the lower cavity, the thyristor 6 is a unidirectional semiconductor device made of silicon according to the thyristor 6, also called a thyristor, the thyristor 6 has high power, the heat generated in the working process is large, in order to effectively and reliably dissipate heat of the thyristor 6, a heat dissipation bottom plate 11 capable of transferring heat is arranged at the bottom of the housing 1, the solid state relay further comprises a heat dissipation structure 8 which is arranged at the bottom of the housing 1 and is attached to the heat dissipation bottom plate 11, the heat dissipation structure 8 is arranged as a specific structure, the heat dissipation structure 8 comprises a main body 81 which is fixed at the lower side of the heat dissipation bottom plate 11 and is in a shape of an i, and a plurality of rows 82 which are arranged at intervals on two side walls of the heat dissipation main body 81, the main body 81 and the rows 82 are integrally formed, so that the heat dissipation structure is capable of reliably dissipating heat generated by the thyristor 6, and the heat dissipation efficiency of the solid state relay is improved by the heat dissipation structure is improved, and the heat dissipation efficiency of the solid state relay is guaranteed, and the heat dissipation efficiency is improved by the heat dissipation of the solid state relay is improved, and the heat dissipation efficiency is guaranteed by the heat dissipation of the heat dissipation structure and the heat dissipation efficiency is improved.
As shown in fig. 3, the two side surfaces of the heat dissipating rows 82 are formed with a plurality of corrugated protrusions 83, and the heat dissipating area of the heat dissipating rows 82 can be increased and the structural strength of the heat dissipating rows 82 can be enhanced by the plurality of corrugated protrusions 83, so that the heat dissipating efficiency is improved and the heat dissipating effect is better.
In order to reliably and stably install the solid-state relay at a fixed position, an installation chute is arranged at the bottom of the heat dissipation main body 81, a fixing frame 9 is arranged in the installation chute, two opposite positioning hooks 91 are arranged on two sides of the fixing frame 9, fixing holes are formed in two ends of the fixing frame 9, and the fixing frame 9 is installed at fixed positions such as a clamping rail or a cabinet body through screws penetrating through the fixing holes, so that the installation stability of the solid-state relay is realized.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (9)
1. The solid-state relay with the temperature control protection comprises a shell (1), a control circuit board (2), an input control end (3) and an output load end (4), wherein a photoelectric coupler (5) and a thyristor (6) are arranged on the control circuit board (2), the output load end (4) is electrically connected with the thyristor (6), the input control end (3) is electrically connected with the photoelectric coupler (5) and is used for transmitting an input signal and controlling the on or off of the thyristor (6), and the solid-state relay is characterized in that a temperature protector (7) used for detecting the working temperature of the solid-state relay is arranged on the control circuit board (2), and the temperature protector (7) is electrically connected between the input control end (3) and the photoelectric coupler (5) and cuts off the input signal transmitted between the input control end (3) and the photoelectric coupler (5) when the working temperature reaches a set value.
2. The solid state relay with temperature control protection of claim 1, wherein: the temperature protector (7) is provided with a temperature-sensing bimetallic strip, and the bimetallic strip drives contacts of the temperature protector to be opened when the station temperature reaches the action temperature.
3. The solid state relay with temperature control protection of claim 2, wherein: the input control end (3) comprises an input wiring plug-in unit (31) which is arranged at the top of the shell (1) in a pluggable manner and is connected with the control circuit board (2), and the input wiring plug-in unit (31) is provided with two wire insertion holes.
4. A solid state relay with temperature control protection as claimed in claim 3, wherein: the output load end (4) comprises two output wiring terminals (41) which are respectively arranged in wiring holes at two ends of the shell (1), the output wiring terminals (41) are composed of a wiring frame and fastening screws, and a conductive plate (42) connected with the control circuit board (2) is fixedly arranged in the wiring frame in a penetrating mode.
5. The solid state relay with temperature control protection of any of claims 1-4, wherein: the housing (1) has a mounting cavity suitable for mounting the control circuit board (2), the control circuit board (2) divides the mounting cavity into an upper cavity and a lower cavity, the thyristor (6) is accommodated in the lower cavity, and the housing (1) comprises a heat dissipation bottom plate (11) which is contacted with the thyristor (6) and can transfer heat.
6. The solid state relay with temperature control protection of claim 5, wherein: the radiator structure (8) is arranged at the bottom of the shell (1) and is attached to the radiating bottom plate (11).
7. The solid state relay with temperature control protection of claim 6, wherein: the radiator structure (8) comprises a radiating main body (81) fixed on the lower side of a radiating bottom plate (11) and in an I shape, and a plurality of radiating rows (82) arranged on the side walls of the two sides of the radiating main body (81) at intervals, wherein the radiating main body (81) and the radiating rows (82) are integrally formed by aluminum structures.
8. The solid state relay with temperature control protection of claim 7, wherein: a plurality of corrugated bulges (83) are formed on the side surfaces of the two sides of the radiating row (82).
9. The solid state relay with temperature control protection of claim 8, wherein: the bottom of radiating main part (81) is provided with the installation spout, be provided with mount (9) in the installation spout, mount (9) both sides are provided with two relative location pothooks (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321942125.7U CN220400493U (en) | 2023-07-21 | 2023-07-21 | Solid-state relay with temperature control protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321942125.7U CN220400493U (en) | 2023-07-21 | 2023-07-21 | Solid-state relay with temperature control protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220400493U true CN220400493U (en) | 2024-01-26 |
Family
ID=89597179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321942125.7U Active CN220400493U (en) | 2023-07-21 | 2023-07-21 | Solid-state relay with temperature control protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220400493U (en) |
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2023
- 2023-07-21 CN CN202321942125.7U patent/CN220400493U/en active Active
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