CN210182298U

CN210182298U - Novel solid-state relay

Info

Publication number: CN210182298U
Application number: CN201921377151.3U
Authority: CN
Inventors: Haiyan Song; 宋海燕
Original assignee: Suzhou He Quan Instrument Technology Co Ltd
Current assignee: Suzhou He Quan Instrument Technology Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-03-24
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a novel solid-state relay, the on-line screen storage device comprises a base, the outside fixedly connected with casing at base top, the axis fixedly connected with DBC board at base top, the bare chip of left side fixedly connected with at DBC board top, the top fixedly connected with opto-coupler line of bare chip, the right side fixedly connected with anode strip at DBC board top. The utility model discloses a set up the fire-retardant layer of PBT, high strength, fatigue resistance, stable in size, creep deformation is also little, also change very rarely under the high temperature condition, UL temperature index after the reinforcing reaches 120-.

Description

Novel solid-state relay

Technical Field

The utility model relates to a relay technical field specifically is novel solid state relay.

Background

The solid-state relay is a new type of contactless switch device composed of solid-state electronic elements, it utilizes the switching characteristics of electronic elements (such as switching triode, bidirectional thyristor, etc. semiconductor devices) to achieve the purpose of connecting and disconnecting circuit without contact and spark, so it is also called "contactless switch", it is a four-end active device, two terminals are input control terminals, the other two terminals are output controlled terminals, it has amplification driving function and isolation function, it is very suitable for driving high-power switch type actuating mechanism, it has higher reliability than electromagnetic relay, and it has no contact, long service life, fast speed, and small interference to outside, it has been widely used, solid-state relay in the industry at present, product control single optical coupler is directly welded to bottom plate circuit, optical coupler radiating part is directly welded to bottom plate, and many shell materials do not use flame-retardant material, the problems of low current-carrying capacity, slow heat dissipation, no flame retardance of partial products and lack of electrical safety of product installation easily occur, and therefore a novel solid-state relay is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a novel solid state relay possesses fast, the good and high advantage of security of radiating, has solved solid state relay in the present trade, product control single optical coupling direct welding bottom plate circuit, and the partial directness of opto-coupler heat dissipation divides and welds with the bottom plate, and the many useless fire-retardant materials of shell material simultaneously appear current-carrying ability low easily, and the heat dissipation is slower, and some products do not have fire-retardantly to and lack the problem of the electrical safety nature of product installation.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: novel solid state relay, the on-line screen storage device comprises a base, the outside fixedly connected with casing at base top, the axis fixedly connected with DBC board of department at base top, the naked chip of left side fixedly connected with at DBC board top, the top fixedly connected with opto-coupler line of naked chip, the right side fixedly connected with anode strip at DBC board top, the controllable silicon board of left side fixedly connected with of anode strip, the left side fixedly connected with cathode strip of controllable silicon board, the inner chamber of anode strip and cathode strip all overlaps and is equipped with the bolt, the top fixedly connected with connection piece of bolt, the top and the casing fixed connection of connection piece, the fire-retardant layer of PBT is scribbled to the surface of casing.

Preferably, the thickness of the PBT flame-retardant layer is 0.01-0.05 mm.

Preferably, the DBC board is a copper-clad ceramic substrate, and the thickness of the DBC board is 0.8-3.2 mm.

Preferably, the top of the surface of the bolt is sleeved with a gasket, and the bottom of the surface of the bolt is in threaded connection with a nut.

(III) advantageous effects

Compared with the prior art, the utility model provides a novel solid state relay possesses following beneficial effect:

the utility model has the advantages that the PBT flame-retardant layer is arranged, the strength is high, the fatigue resistance, the size is stable, the creep deformation is small, the change is very little under the high temperature condition, the enhanced UL temperature index reaches 120-plus-140 ℃, the outdoor long-term aging property is also good, the stress cracking is avoided, the PBT is not easy to decompose when meeting water, the flame retardance of the product is improved, the surface shell strength is high, the durability is good, the DBC plate is arranged, the copper-clad ceramic substrate is called as the ceramic copper-clad plate for short, the ceramic copper-clad plate has the characteristics of high heat conduction, high electric insulation, high mechanical strength, low expansion and the like of ceramic, the high conductivity and excellent welding performance of oxygen-free copper are realized, the working thermal resistance is extremely low through the connection of the DBC plate and a bare chip, the quick contact resistance is extremely low, the heat dissipation is quick, the current carrying and the service life of the product are enhanced, the solid, the optical coupler radiating part is directly welded with the bottom plate, and meanwhile, a plurality of shell materials do not use flame-retardant materials, so that the current-carrying capacity is low, the radiating is slow, and part of products are free of flame retardance and lack of the electrical safety of product installation.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the structure of the surface layer of the housing of the present invention.

In the figure: 1. a base; 2. a DBC plate; 3. a bare chip; 4. an optical coupling line; 5. connecting sheets; 6. a bolt; 7. a gasket; 8. an anode sheet; 9. a cathode sheet; 10. a nut; 11. a housing; 12. a silicon controlled plate; 13. and a PBT flame-retardant layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses a base 1, DBC board 2, naked chip 3, opto-coupler line 4, connection piece 5, bolt 6, gasket 7, positive pole piece 8, negative pole piece 9, nut 10, casing 11, controllable silicon board 12 and PBT fire-retardant layer 13 part are the parts that general standard component or field technician know, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental approach.

Referring to fig. 1-2, a novel solid-state relay includes a base 1, a housing 11 is fixedly connected to the outside of the top of the base 1, a DBC board 2 is fixedly connected to the center axis of the top of the base 1, the DBC board 2 is a copper-clad ceramic substrate, the DBC board 2 has a thickness of 0.8-3.2mm, the DBC board 2 is provided, the copper-clad ceramic substrate is abbreviated as a ceramic copper-clad plate, the ceramic copper-clad plate has the characteristics of high thermal conductivity, high electrical insulation, high mechanical strength, low expansion, etc. of ceramic, and has high electrical conductivity and excellent welding performance of oxygen-free copper, a bare chip 3 is fixedly connected to the left side of the top of the DBC board 2, and an anode plate 8 is fixedly connected to the right side of the top of the DBC board 2 by connecting the DBC board 2 and the bare chip 3, so that the working thermal resistance is extremely small, the heat dissipation is fast, the current carrying and the life of the, the left side of an anode sheet 8 is fixedly connected with a silicon controlled plate 12, the left side of the silicon controlled plate 12 is fixedly connected with a cathode sheet 9, the inner cavities of the anode sheet 8 and the cathode sheet 9 are both sleeved with bolts 6, the top of the surface of each bolt 6 is sleeved with a gasket 7, the bottom of the surface of each bolt 6 is in threaded connection with a nut 10, the top of each bolt 6 is fixedly connected with a connecting sheet 5, the top of each connecting sheet 5 is fixedly connected with a shell 11, the outer surface of the shell 11 is coated with a PBT flame-retardant layer 13, the thickness of the PBT flame-retardant layer 13 is 0.01-0.05mm, by arranging the PBT flame-retardant layer 13, the strength is high, the fatigue resistance, the size stability and the creep deformation are small, the change is very small under the high-temperature condition, the enhanced UL temperature index reaches 120-140 ℃, the outdoor long-term aging property is also good, the stress cracking is avoided, durable effect.

When in use, the PBT flame-retardant layer 13 is arranged, the strength is high, the fatigue resistance, the size is stable, the creep deformation is small, the change is very little under the high temperature condition, the enhanced UL temperature index reaches 120-140 ℃, the outdoor long-term aging property is also good, the PBT is not easy to decompose without stress cracking, the flame retardance of the product is improved, the surface shell strength is high, and the durability is good, the DBC plate 2 is arranged, the copper-clad ceramic substrate is called ceramic copper-clad plate for short, the ceramic copper-clad plate has the characteristics of high heat conduction, high electric insulation, high mechanical strength, low expansion and the like of ceramic, the high conductivity and the excellent welding performance of oxygen-free copper are realized, the work is extremely small by arranging the DBC plate 2 and the bare chip 3 for connection, the quick contact resistance is extremely small, the heat dissipation is quick, the current carrying and the service life of the product are enhanced, the problems of the solid state relay on the prior art and the direct welding of, the optical coupler radiating part is directly welded with the bottom plate, and meanwhile, a plurality of shell materials do not use flame-retardant materials, so that the current-carrying capacity is low, the radiating is slow, and part of products are free of flame retardance and lack of the electrical safety of product installation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Novel solid state relay, including base (1), its characterized in that: the outer side of the top of the base (1) is fixedly connected with a shell (11), a middle shaft of the top of the base (1) is fixedly connected with a DBC plate (2), a bare chip (3) is fixedly connected to the left side of the top of the DBC board (2), an optical coupling line (4) is fixedly connected to the top of the bare chip (3), an anode sheet (8) is fixedly connected to the right side of the top of the DBC plate (2), the left side of the anode sheet (8) is fixedly connected with a controllable silicon plate (12), the left side of the controllable silicon plate (12) is fixedly connected with a cathode sheet (9), the inner cavities of the anode strip (8) and the cathode strip (9) are sleeved with bolts (6), the top of the bolt (6) is fixedly connected with a connecting sheet (5), the top of the connecting sheet (5) is fixedly connected with the shell (11), the outer surface of the shell (11) is coated with a PBT flame-retardant layer (13).

2. The novel solid state relay of claim 1, wherein: the thickness of the PBT flame-retardant layer (13) is 0.01-0.05 mm.

3. The novel solid state relay of claim 1, wherein: the DBC board (2) is a copper-clad ceramic substrate, and the thickness of the DBC board (2) is 0.8-3.2 mm.

4. The novel solid state relay of claim 1, wherein: the top on the surface of the bolt (6) is sleeved with a gasket (7), and the bottom on the surface of the bolt (6) is in threaded connection with a nut (10).