CN202076253U - Inverter welder electric power heat-conducting and insulating device - Google Patents
Inverter welder electric power heat-conducting and insulating device Download PDFInfo
- Publication number
- CN202076253U CN202076253U CN 201120129403 CN201120129403U CN202076253U CN 202076253 U CN202076253 U CN 202076253U CN 201120129403 CN201120129403 CN 201120129403 CN 201120129403 U CN201120129403 U CN 201120129403U CN 202076253 U CN202076253 U CN 202076253U
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- CN
- China
- Prior art keywords
- heat
- radiator
- power
- conducting
- discrete device
- 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 - Lifetime
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model relates to an inverter welder electric power heat-conducting and insulating device which comprises a power semiconductor discrete device and a heat radiator, wherein a ceramic substrate is arranged between the power semiconductor discrete device and the heat radiator so as to isolate them; one side of the heat radiator and one side of the power semiconductor discrete device are connected with the ceramic substrate and are coated with a heat-conducting silicone grease layer; side surfaces of the ceramic substrate are connected with the heat radiator and the power semiconductor discrete device and are respectively coated with a heat-conducting silicone grease layer. The inverter welder electric power heat-conducting and insulating device has high heat conductivity and a low heat resisting coefficient, so that the heat transfer efficiency between power elements and the heat radiator is ensured, the heat-radiating effect of the power elements is enhanced, the temperature rise is effectively lowered through cooperating with the heat-conducting silicone grease layers, and the load duration factor and the reliability of a welding power source are improved at the same time.
Description
Technical field:
The utility model relates to a kind of contravariant welding machine electric power heat conductive insulating device.
Background technology:
Power MOSFET (power field effect transistor), IGBT (igbt), the extensive use in inversion welding source of diode constant power semi-conductor discrete device, when requiring to have good heat conductive insulating between discrete device copper soleplate and the radiator, known mounting process is to use thermal conductive silicon film (heat-conducting insulated film) to isolate between discrete device copper soleplate and radiator, the thermal conductive silicon film (heat-conducting insulated film) of existing use is on the low side and thermal resistivity is higher because of its thermal conductivity, so transmission heat efficient is low between power component and the radiator, radiating effect is poor, make the power component temperature rise higher, the cyclic duration factor of welding machine is lower, has also reduced the power component functional reliability simultaneously.
Summary of the invention:
The purpose of this utility model provides a kind of contravariant welding machine electric power heat conductive insulating device, and this device has improved the power component radiating effect, when temperature rise effectively reduces, has improved source of welding current cyclic duration factor and reliability.
The technical scheme that the utility model is taked is:
Contravariant welding machine electric power heat conductive insulating device comprises power semi-conductor discrete device, radiator, is provided with ceramic substrate between power semi-conductor discrete device and the radiator and isolates.
The side that described radiator, power semi-conductor discrete device they and ceramic substrate join scribbles the heat-conducting silicone grease layer.
The side that described ceramic substrate itself and radiator, power semi-conductor discrete device join scribbles the heat-conducting silicone grease layer respectively.
That ceramic substrate has is high temperature resistant, electrical insulation capability is high, dielectric constant and dielectric loss is low, thermal conductivity is high, thermal resistivity is low, chemical stability is good, major advantage such as close with the thermal coefficient of expansion of element, thermal conductivity height and thermal resistivity low guaranteed transmission heat efficient between power component and the radiator, improved the power component radiating effect, cooperate the heat-conducting silicone grease coating, when temperature rise effectively reduces, source of welding current cyclic duration factor and reliability have been improved.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Wherein: 1 is power semi-conductor discrete device, and 2 is radiator, and 3 is ceramic substrate, and 4 is the heat-conducting silicone grease layer.
Embodiment:
Contravariant welding machine electric power heat conductive insulating device comprises power semi-conductor discrete device 1, radiator 2, is provided with ceramic substrate 3 between power semi-conductor discrete device 1 and the radiator 2 and isolates.
The side that described radiator 2, power semi-conductor discrete device 1 they and ceramic substrate 3 join scribbles heat-conducting silicone grease layer 4.
It scribbles heat-conducting silicone grease layer 4 respectively with side that radiator 2, power semi-conductor discrete device 1 join described ceramic substrate 3.
Claims (3)
1. contravariant welding machine electric power heat conductive insulating device comprises power semi-conductor discrete device, radiator, it is characterized in that, is provided with ceramic substrate between power semi-conductor discrete device and the radiator and isolates.
2. contravariant welding machine electric power heat conductive insulating device according to claim 1 is characterized in that, the side that described radiator, power semi-conductor discrete device they and ceramic substrate join scribbles the heat-conducting silicone grease layer.
3. contravariant welding machine electric power heat conductive insulating device according to claim 1 is characterized in that, the side that described ceramic substrate itself and radiator, power semi-conductor discrete device join scribbles the heat-conducting silicone grease layer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120129403 CN202076253U (en) | 2011-04-27 | 2011-04-27 | Inverter welder electric power heat-conducting and insulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120129403 CN202076253U (en) | 2011-04-27 | 2011-04-27 | Inverter welder electric power heat-conducting and insulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076253U true CN202076253U (en) | 2011-12-14 |
Family
ID=45114342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120129403 Expired - Lifetime CN202076253U (en) | 2011-04-27 | 2011-04-27 | Inverter welder electric power heat-conducting and insulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076253U (en) |
-
2011
- 2011-04-27 CN CN 201120129403 patent/CN202076253U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |