EP3747046A1 - A method and a jig for manufacturing a pin-fin type power module - Google Patents
A method and a jig for manufacturing a pin-fin type power moduleInfo
- Publication number
- EP3747046A1 EP3747046A1 EP19700871.7A EP19700871A EP3747046A1 EP 3747046 A1 EP3747046 A1 EP 3747046A1 EP 19700871 A EP19700871 A EP 19700871A EP 3747046 A1 EP3747046 A1 EP 3747046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jig
- holes
- pin
- fins
- fin
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
- H10W74/01—Manufacture or treatment
- H10W74/016—Manufacture or treatment using moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/22—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections
- H10W40/226—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections characterised by projecting parts, e.g. fins to increase surface area
- H10W40/228—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections characterised by projecting parts, e.g. fins to increase surface area the projecting parts being wire-shaped or pin-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14131—Positioning or centering articles in the mould using positioning or centering means forming part of the insert
Definitions
- the invention relates to a method and a jig for manufacturing a Pin-Fin type power module.
- a Pin-Fin baseplate 10 includes a metal plate 11 having several Fins 12 on one side (the Pin-Fin side), and the other side (the flat side) of the Pin-Fin baseplate 10 is connected to a power module.
- the Fins contact a liquid cooling system directly, so the power module will not be overheated.
- the thermal cycling capability of the power module is significantly improved and the lifetime of the power module is extended.
- a traditional Pin-Fin type power module uses silicone gel as sealant.
- the power module further comprises an insulation material 20 (such as DBC (Direct Bonded Copper), polymer film) and power chips 30 (IGBT, MOSFET, Diode, etc.) provided on the insulation material 20.
- the insulation material 20 is connected to the flat side of the Pin-Fin baseplate 10.
- the insulation material 20 and power chips 30 are encapsulated in a housing 50 and the space inside the housing is filled with silicone gel 40.
- the traditional Pin-Fin type power module has a complicated structure and needs more steps in the manufacturing process, which leads to low manufacturing efficiency and higher cost.
- a transfer molded power module is presented. As shown in FIG.2-FIG.3, in this power module, epoxy resin 60 is used as sealant and no housing is needed. A bottom mold 702 and a top mold 701 are used to manufacture the power module. The power module is placed in the cavity 700 between the top mold 701 and the bottom mold 702, and the Pin-Fin side is placed on the upper surface 7021 of the bottom mold 702. The epoxy resin is injected into the cavity 700 by pressure through an opening 7011 on the top mold 701.
- the current manufacturing process has the following drawbacks:
- One aspect of the present invention is to provide a method for
- a Pin-Fin type power module including: (1) providing a Pin-Fin type power module and a jig, the power module comprises a Pin-Fin baseplate, insulation material connecting the base plate and power chips provided on the insulation material.
- the baseplate has a first surface and a second surface opposite the first surface. The first surface is connected to the insulation material and the second surface has several Fins on it.
- the jig includes a main body having a flat upper surface and a flat lower surface, and holes provided on the upper surface of the main body, wherein the distribution of the holes is the same as the arrangement of the Fins, the aperture of the holes is larger than the dimension of the Fins, and the length of the holes is not shorter than that of the Fins.
- the aperture of the holes depends on the thermal expansion of the Fins' material and/or the jig's material.
- the jig is made of carbon, copper or steel.
- the insulation material is DBC or polymer film.
- Another aspect of the present invention is to provide a jig for
- the module includes a surface with several protrusive Fins on it, the jig comprises: a main body having a flat upper surface and a flat lower surface, holes provided on the upper surface of the main body, wherein the distribution of the holes is the same as the arrangement of the Fins, the aperture of the holes is larger than the dimension of the Fins, and the length of the holes is not shorter than that of the Fins.
- the holes are through holes.
- the holes are blind holes.
- the cross section of the holes is round, oval or diamond shape.
- FIG.l is a cross section of a traditional gel-sealed Pin-Fin type power module.
- FIG.2 is a cross section of a transfer molded Pin-Fin type power module.
- FIG.3 illustrates molding the Pin-Fin type power module with epoxy resin in the top mold and the bottom mold by traditional way.
- FIG.4 illustrates the unsealed Pin-Fin type power module before molding process.
- FIG.5 illustrates a jig protecting the Pin-Fin during molding process.
- FIG.6 illustrates inserting the Pin-Fin into a jig having through holes.
- FIG.7 illustrates molding the Pin-Fin type power module with epoxy resin under the protection of the jig.
- FIG.8 illustrates the epoxy resin sealed Pin-Fin type power module after stripping the jig.
- FIG.9 illustrates inserting the Pin-Fin into a jig having blind holes through arrow A.
- FIG.10 illustrates the combination of the Pin-Fin and the jig after the Fins are completely inserted into the blind holes.
- FIG.ll illustrates another alternative jig having blind holes.
- Embodiment 1 referring to FIG.4-FIG.8, the Pin-Fin type power module is manufactured by the following steps:
- the power module comprises a Pin-Fin baseplate 1, insulation material (a DBC) 2 connecting the base plate 1 and power chips 3 provided on the DBC 2.
- the baseplate 1 has a first surface 11 and a second surface 12 opposite the first surface 11.
- the first surface 11 is connected to the DBC 2 and the second surface 12 has several Fins 121 on it.
- the jig 9 includes a carbon main body having a flat upper surface and a flat lower surface, and several through holes 91 provided on the upper surface of the main body, wherein the distribution of the through holes is the same as the arrangement of the Fins, the aperture of the holes is larger than the dimension of the Fins, and the length of through holes is the same as that of the Fins.
- Embodiment 2 referring now to FIG.9-FIG.10, in an alternative solution, a steel jig 9 with blind holes 91 is used.
- the length of blind holes is the same as that of the Fins.
- the Pin-Fin is supported steadily by the jig.
- the jig with blind holes is stable enough so the pressure on the power module is distributed uniformly during the molding process.
- Embodiment 3 referring now to FIG.ll, in another alternative jig, blind holes 91 are provided, but the length of blind holes 91 is longer than that of the Fins 121, so there is a vertical gap 800 between each Fin and the corresponding blind hole. The vertical direction is parallel to the length direction of the Fins.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018201263.6A DE102018201263B3 (en) | 2018-01-29 | 2018-01-29 | A METHOD AND DEVICE FOR MANUFACTURING A PIN-FIN POWER MODULE |
| PCT/EP2019/050488 WO2019145154A1 (en) | 2018-01-29 | 2019-01-10 | A method and a jig for manufacturing a pin-fin type power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3747046A1 true EP3747046A1 (en) | 2020-12-09 |
Family
ID=65036765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19700871.7A Withdrawn EP3747046A1 (en) | 2018-01-29 | 2019-01-10 | A method and a jig for manufacturing a pin-fin type power module |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3747046A1 (en) |
| JP (1) | JP7290650B2 (en) |
| CN (1) | CN111527598A (en) |
| DE (1) | DE102018201263B3 (en) |
| WO (1) | WO2019145154A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111791421A (en) * | 2020-07-13 | 2020-10-20 | 无锡利普思半导体有限公司 | Compression mold suitable for plastic encapsulation of power module and plastic encapsulation method thereof |
| DE102020208862A1 (en) * | 2020-07-15 | 2022-01-20 | Zf Friedrichshafen Ag | MOLDING TOOLING FOR ENCAPSULATION OF A PIN-FIN TYPE POWER MODULE AND METHOD OF MAKING POWER MODULE |
| EP4205942B1 (en) * | 2020-09-16 | 2025-01-08 | Huawei Technologies Co., Ltd. | Injection mold and injection molding method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011238644A (en) * | 2010-05-06 | 2011-11-24 | Denso Corp | Method of manufacturing power semiconductor module |
| FR2965699B1 (en) | 2010-10-05 | 2013-03-29 | Commissariat Energie Atomique | DEVICE FOR THERMAL DISSIPATION FOR AT LEAST ONE ELECTRONIC COMPONENT AND CORRESPONDING METHOD |
| JP2012164763A (en) * | 2011-02-04 | 2012-08-30 | Toyota Motor Corp | Method for manufacturing semiconductor package with heat sink, and heat sink |
| JP5776328B2 (en) | 2011-05-19 | 2015-09-09 | トヨタ自動車株式会社 | Jig, semiconductor module manufacturing method, and semiconductor module |
| WO2013114647A1 (en) | 2012-01-31 | 2013-08-08 | 三菱電機株式会社 | Semiconductor device and method for manufacturing same |
| JP5987190B2 (en) * | 2012-09-25 | 2016-09-07 | 三菱電機株式会社 | Mold for sealing semiconductor device and semiconductor device |
| JP6021695B2 (en) * | 2013-03-06 | 2016-11-09 | 三菱電機株式会社 | Semiconductor device manufacturing method and semiconductor device manufacturing apparatus |
| JP2015185835A (en) | 2014-03-26 | 2015-10-22 | 株式会社デンソー | Semiconductor device and manufacturing method thereof |
| JP6446280B2 (en) | 2015-01-28 | 2018-12-26 | 日立オートモティブシステムズ株式会社 | Electronic equipment |
-
2018
- 2018-01-29 DE DE102018201263.6A patent/DE102018201263B3/en not_active Expired - Fee Related
-
2019
- 2019-01-10 JP JP2020541446A patent/JP7290650B2/en active Active
- 2019-01-10 WO PCT/EP2019/050488 patent/WO2019145154A1/en not_active Ceased
- 2019-01-10 CN CN201980006546.9A patent/CN111527598A/en active Pending
- 2019-01-10 EP EP19700871.7A patent/EP3747046A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN111527598A (en) | 2020-08-11 |
| DE102018201263B3 (en) | 2019-05-16 |
| WO2019145154A1 (en) | 2019-08-01 |
| JP7290650B2 (en) | 2023-06-13 |
| JP2021513217A (en) | 2021-05-20 |
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