CN201742378U - Small-sized high-power sealed DC solid state relay - Google Patents
Small-sized high-power sealed DC solid state relay Download PDFInfo
- Publication number
- CN201742378U CN201742378U CN2010202372538U CN201020237253U CN201742378U CN 201742378 U CN201742378 U CN 201742378U CN 2010202372538 U CN2010202372538 U CN 2010202372538U CN 201020237253 U CN201020237253 U CN 201020237253U CN 201742378 U CN201742378 U CN 201742378U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- power
- output
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electronic Switches (AREA)
Abstract
A small-sized high-power sealed DC solid state relay comprises a metal casing, a metal cover plate, a control circuit and a power output circuit, wherein the power output circuit is arranged on the bottom layer of the metal casing, the control circuit is arranged on the top layer of the metal casing, and the metal cover plate is hermetically fixed at the top of the metal casing; two input terminals are hermetically mounted on the rear end surface of the metal casing, two output terminals are hermetically mounted on the front end surface of the metal casing, the two input terminals are connected with the input terminals of the control circuit, the output terminals of the control circuit are connected with the input terminals of the power output circuit, and the output terminals of the power output circuit are connected with the two output terminals. The utility model adopts a double-layer structural design, has the advantages of small volume, heavy load current, long service life, good environmental adaptation performance and high reliability, and has a leakage rate less than or equal to 1*0.1 Pa.cm3 per second.
Description
Technical field
The utility model relates to a kind of small-sized high-power direct-current solid-state relay.
Background technology
Solid state relay is an important branch in relay field, its inside all is made up of solid-state component, compare with the traditional electrical magnetic relay, inside does not have movable parts, have reliability height, life-span length, vibration resistance, characteristics that impact is good, under the abominable application conditions of reliability requirement height, environment, the trend of replacing electromagnetic relay is arranged greatly.Existing solid state relay is mainly epoxy resin embedding infrastructure product, and load capacity is little, and heat dispersion is poor, can not satisfy the instructions for use in fields such as Aeronautics and Astronautics, boats and ships, weapons, nuclear industry.And the above small-sized high-power solid state relay of 40A does not have the closed type product at present yet.
The utility model content
The technical problem that the utility model solves: design a kind of small-sized high-power sealed direct-current solid-state relay, adopt the double-layer structure design, volume is little, load current is big, and the life-span is long, and environmental adaptability is good, reliability is high, leak rate≤1 * 10
-1Pa.cm
3/ s.
Technical solution of the present utility model: a kind of small-sized high-power sealed direct-current solid-state relay, described relay is made of metal shell, metal cover board, control circuit and power output circuit, power output circuit is arranged on the bottom of metal shell, control circuit is arranged on the top layer of metal shell, and the metal cover board sealing and fixing is at the top of metal shell; Be sealed and installed with two input terminals on the rear end face of metal shell, be sealed and installed with two lead-out terminals on the front end face, and two input terminals are connected with the input of control circuit, the output of control circuit is connected with the input of power output circuit, and the output of power output circuit is connected with two lead-out terminals.
Described control circuit is made up of input circuit, high frequency oscillation circuit, transformer isolation circuit and output control circuit; The input of input circuit is connected with two input terminals respectively, the input of output termination high frequency oscillation circuit, the input of the output termination transformer isolation circuit of high frequency oscillation circuit, the input of the output termination output control circuit of transformer isolation circuit, the input of the output termination power output circuit of output control circuit, the output of power output circuit are connected with two lead-out terminals respectively.
Described metal cover board adopts melting welding sealed package mode to be fixed on the top of metal shell under the nitrogen protection environment.
Described power output circuit is made up of power field effect pipe V7, V8, V9, V10, and V7, V8 anti-series connect, and V9, V10 anti-series connect, and V7, V9 are connected in parallel, and V8, V10 are connected in parallel.
Described input terminal and lead-out terminal all are fixed on the front/rear end of metal shell by glass insulator.
Described power field effect pipe V7, V8, V9, V10 all are fixed on the bottom surface of metal shell by ceramic substrate.
Advantage that the utility model compared with prior art has and effect:
1, the utility model internal circuit adopts double-layer structure up and down, produces debugging conveniently, and volume is little, 80.5mm * 60mm * 21.5mm max.
2, the utility model metal shell and metal cover board adopt melting welding sealed package mode under the nitrogen protection environment; and input terminal and lead-out terminal are all installed by the sealing of glass insulator sintering, the reliability height, and the adverse environment resistant ability is strong; good airproof performance, leak rate≤1 * 10
-1Pa.cm
3/ s.
3, the utility model power field effect pipe all is weldingly fixed on the bottom surface of metal shell by ceramic substrate, by the metal shell heat loss through conduction, and perfect heat-dissipating, load capacity is strong.Load capacity 50VDC/50A.
4, the utility model adopts two power field effect pipe V7, V9 to be connected in parallel, and extremely goes up two same model field effect transistor of differential concatenation V8, V10 at the S of V7, V9 and use as diode, forms the unidirectional output circuit structure of big electric current, realizes unilateral conduction.
Description of drawings
Fig. 1 is an outline drawing of the present utility model,
Fig. 2 is the utility model front end face structural representation,
Fig. 3 is the A-A cutaway view of Fig. 1,
Fig. 4 is a circuit block diagram of the present utility model,
Fig. 5 is circuit theory diagrams of the present utility model.
Embodiment
1,2,3,4,5 a kind of embodiment of the present utility model is described in conjunction with the accompanying drawings.
A kind of small-sized high-power sealed direct-current solid-state relay; constitute by metal shell 1, metal cover board 4, control circuit 7 and power output circuit 8; power output circuit 8 is arranged on the bottom of metal shell 1; control circuit 7 is arranged on the top layer of metal shell 1; metal cover board 4 adopts melting welding sealed package mode to be fixed on the top of metal shell 1 under the nitrogen protection environment, makes to be full of high-purity nitrogen in the metal shell.Be sealed and installed with two input terminals 5 by glass insulator 3 sintering on the rear end face of metal shell 1, be sealed and installed with two lead-out terminals 6 by glass insulator 3 sintering on the front end face.The outside of metal shell 1 is provided with four installing holes 9 for four jiaos.
Control circuit 7 is the printed circuit board of being made up of discrete assembly, is made up of input circuit, high frequency oscillation circuit, transformer isolation circuit and output control circuit; The input of input circuit is connected with two input terminals 5 respectively, the input of output termination high frequency oscillation circuit, the input of the output termination transformer isolation circuit of high frequency oscillation circuit, the input of the output termination output control circuit of transformer isolation circuit, the input of the output termination power output circuit 8 of output control circuit, the output of power output circuit 8 are connected with two lead-out terminals 6 respectively.
The utility model is one group of unidirectional output sealed direct-current solid-state relay of often opening, and output current 50A has unidirectional output circuit structure, big, little (80.5 * 60 * 21.5mm of volume of load current
3), environmental suitability is good, reliability is high.
Operation principle: when input terminal 5 applies control signal, direct current signal through the input circuit input produces high-frequency signal through high frequency oscillation circuit, rectification provides stable driving voltage to the AC signal that high-frequency signal produces after by the transformer isolation which couple through output control circuit again, the action of driving power field effect transistor, output drives load running in conducting state.The utility model output current is 50A, and is the unilateal conduction output circuit.For satisfying the utility model reliably working and realization unilateal conduction output performance under big electric current, the utility model adopts power field effect pipe V7, the V9 of two 90A to be connected in parallel, and extremely go up two same model field effect transistor of differential concatenation V8, V10 at the S of V7, V9 and use as diode, form the unidirectional output circuit structure of big electric current, realize unilateral conduction.The utility model adopts the output of MOSFET pipe, because S, the D of MOSFET pipe be diode characteristic very, the diode current parameter is identical with MOSFET pipe parameter with voltage parameter, coupling is used in the time of managing D, S forward conduction with MOSFET, so select for use same model MOSFET pipe to use, realize the requirement of unilateal conduction as diode.
Claims (6)
1. small-sized high-power sealed direct-current solid-state relay, it is characterized in that: described relay is made of metal shell (1), metal cover board (4), control circuit (7) and power output circuit (8), power output circuit (8) is arranged on the bottom of metal shell (1), control circuit (7) is arranged on the top layer of metal shell (1), and metal cover board (4) sealing and fixing is at the top of metal shell (1); Be sealed and installed with two input terminals (5) on the rear end face of metal shell (1), be sealed and installed with two lead-out terminals (6) on the front end face, and two input terminals (5) are connected with the input of control circuit (7), the output of control circuit (7) is connected with the input of power output circuit (8), and the output of power output circuit (8) is connected with two lead-out terminals (6).
2. small-sized high-power sealed direct-current solid-state relay according to claim 1 is characterized in that: described control circuit (7) is made up of input circuit, high frequency oscillation circuit, transformer isolation circuit and output control circuit; The input of input circuit is connected with two input terminals (5) respectively, the input of output termination high frequency oscillation circuit, the input of the output termination transformer isolation circuit of high frequency oscillation circuit, the input of the output termination output control circuit of transformer isolation circuit, the input of the output termination power output circuit (8) of output control circuit, the output of power output circuit (8) are connected with two lead-out terminals (6) respectively.
3. small-sized high-power sealed direct-current solid-state relay according to claim 1 is characterized in that: described metal cover board (2) adopts melting welding sealed package mode to be fixed on the top of metal shell (1) under the nitrogen protection environment.
4. according to claim 1 or 2 or 3 described small-sized high-power sealed direct-current solid-state relays, it is characterized in that: described power output circuit (8) is made up of power field effect pipe V7, V8, V9, V10, and V7, V8 anti-series connect, V9, V10 anti-series connect, V7, V9 are connected in parallel, and V8, V10 are connected in parallel.
5. according to claim 1 or 2 or 3 described small-sized high-power sealed direct-current solid-state relays, it is characterized in that: described input terminal (5) and lead-out terminal (6) all are fixed on the front/rear end of metal shell (1) by glass insulator (3).
6. small-sized high-power sealed direct-current solid-state relay according to claim 4 is characterized in that: described power field effect pipe V7, V8, V9, V10 all are fixed on the bottom surface of metal shell (1) by ceramic substrate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202372538U CN201742378U (en) | 2010-06-12 | 2010-06-12 | Small-sized high-power sealed DC solid state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202372538U CN201742378U (en) | 2010-06-12 | 2010-06-12 | Small-sized high-power sealed DC solid state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742378U true CN201742378U (en) | 2011-02-09 |
Family
ID=43557658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202372538U Expired - Fee Related CN201742378U (en) | 2010-06-12 | 2010-06-12 | Small-sized high-power sealed DC solid state relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742378U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867359A (en) * | 2010-06-12 | 2010-10-20 | 陕西群力电工有限责任公司 | Small-sized high-power sealed direct-current solid-state relay |
| CN104506174A (en) * | 2014-12-10 | 2015-04-08 | 贵州航天电器股份有限公司 | Metal encapsulation optical MOS (metal oxide semiconductor) relay |
| CN111970886A (en) * | 2020-08-06 | 2020-11-20 | 贵州振华群英电器有限公司（国营第八九一厂） | Analog deputy device for double-redundancy transient pulse input |
-
2010
- 2010-06-12 CN CN2010202372538U patent/CN201742378U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867359A (en) * | 2010-06-12 | 2010-10-20 | 陕西群力电工有限责任公司 | Small-sized high-power sealed direct-current solid-state relay |
| CN104506174A (en) * | 2014-12-10 | 2015-04-08 | 贵州航天电器股份有限公司 | Metal encapsulation optical MOS (metal oxide semiconductor) relay |
| CN111970886A (en) * | 2020-08-06 | 2020-11-20 | 贵州振华群英电器有限公司（国营第八九一厂） | Analog deputy device for double-redundancy transient pulse input |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107393901B (en) | Double-sided heat dissipation power module of laminated substrate | |
| CN201742378U (en) | Small-sized high-power sealed DC solid state relay | |
| CN101867359A (en) | Small-sized high-power sealed direct-current solid-state relay | |
| CN204560104U (en) | A kind of microswitch power supply | |
| CN203690282U (en) | Novel insulating pulling tape type thyristor device | |
| CN211016795U (en) | Core-through capacitor and laminated busbar | |
| CN204793295U (en) | Slim power module | |
| CN206301671U (en) | A kind of inductor | |
| CN204216786U (en) | Many pins low clearance chip type power module | |
| CN103647452B (en) | A kind of single tube soft switch BUCK converter | |
| CN202978869U (en) | Magnetic-control high-frequency contact-type electronic switch and convertor using the same | |
| CN208836011U (en) | A kind of high-voltage large current mixed type SiC-IGBT applying unit | |
| CN203526549U (en) | Neodymium-iron-boron sintering device | |
| CN205303188U (en) | High heat dissipating | |
| CN207819762U (en) | Power circuit | |
| CN201115196Y (en) | A heat radiation structure for explosion-proof instrument converter | |
| CN212034578U (en) | Glass sintering shell for power amplifier | |
| CN105491784A (en) | IGBT drive protective circuit board | |
| CN214336542U (en) | High-frequency magnetic assembly | |
| CN210896937U (en) | ESP high-frequency transformer oil tank input end device | |
| CN211788643U (en) | Novel electronic capacitor | |
| CN204155848U (en) | High-power sealed direct-current solid-state relay | |
| CN203617293U (en) | Diode module assembly for rectifier circuit | |
| CN202160106U (en) | Power supply of train fire-fighting system | |
| CN212343635U (en) | Surge suppression filtering module and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20130612 |