CN106711107A - Bolt-free fastening power module - Google Patents
Bolt-free fastening power module Download PDFInfo
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- CN106711107A CN106711107A CN201510439685.4A CN201510439685A CN106711107A CN 106711107 A CN106711107 A CN 106711107A CN 201510439685 A CN201510439685 A CN 201510439685A CN 106711107 A CN106711107 A CN 106711107A
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- notch
- radiator
- base plate
- intermediate mass
- shaped block
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- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a bolt-free fastening power module. At least one notch with two protruding shoulders is formed in the upper side of a heat radiator; a T-shaped block and intermediate blocks that are arranged in the notches of the heat radiator are arranged at the lower side of a base plate of a power module; the T-shaped block and intermediate blocks on the base plate are arranged in the notches of the heat radiator; and a cavity through which cooling liquid flows is formed between the notches and the T-shaped block. At least two elastic compressed springs are installed at the two sides of the intermediate blocks and are compressed at bottoms of the protruding shoulders corresponding to the notches respectively. The notches are connected with the base plate in a sealing manner through sealing strips at the tops of the protruding shoulders and are connected with the two sides of the T-shaped blocks by sealing strips at groove walls of the protruding shoulders. Sealed end plates are installed at the two ends of the notches of the heat radiator; and at least one joint arranged at the sealed end plate is communicated with the respectively notches. According to the invention, the bolt-free fastening power module has a simple structure; the power module can be installed at the heat radiator without any fastening element; the mounting space can be utilized fully; the universality is high; and the heat radiation efficiency can be improved.
Description
Technical field
The present invention relates to a kind of screwless fastening type power model, belong to technical field of semiconductors.
Background technology
Semi-conductor power module mainly includes base plate, covers cermet substrate, semiconductor chip, electrode terminal and housing.
There are several power semiconductor chips in usual power model, such as MOSFET or igbt chip and diode chip for backlight unit are collected
Into and be welded in or be glued on the metal level for covering cermet substrate, while electrode terminal is also welded to cover metal pottery
On the metal level of porcelain substrate and pass housing and be connected with external equipment, realize the input and output of power model, cover metal pottery
Porcelain substrate is welded on copper soleplate again.In semi-conductor power module in the course of the work, the heat produced by semiconductor chip
Can rapidly be absorbed by copper soleplate.Due to copper soleplate, specific heat is small compared with aluminium, and thermal runaway speed is slower, it is impossible in time will
Heat in module sheds, therefore power model bottom need to be arranged on radiator and be radiated.
It is that metal foil is bonded directly to aluminum oxide (AL2Q3) ceramic substrate or nitridation at high temperature to cover cermet substrate
Special process plate on aluminium (ALN) ceramic substrate is two-sided, makes to cover cermet substrate while Thermal conductivity is ensured
The electric insulation relative to power model base plate is additionally provided, because power electronic device needs the temperature at -40 DEG C to 125 DEG C
Be operated under degree circulation environment, thus cover at present the heat of cermet substrate be by connected copper soleplate and
The radiator for being fixed on copper soleplate bottom is radiated.With the development of high-power electric and electronic technology, ceramet group is covered
Plate is as high-power electric and electronic circuit structure technology and the basic material of interconnection technique, and single interconnection function is not
Growing Power Electronic Technique can be met.As shown in Figure 1, existing power model 3 is provided with peace on base plate 4
, be arranged on base plate 4 on radiator 1 by screw 2 by dress hole.But with the development of technology, the installation of subsequent module is empty
Between module packing forms that are small, using cooperatively are various, quantity is more so that the density of power model gradually increasing, this
External cooling to power model proposes requirement higher.But existing power model is required for being arranged on by fastener and dissipated
On hot device, unavoidably need to waste some valuable spaces, increase also and also the thermal resistance between copper soleplate and radiator.
The content of the invention
Can just be installed on radiator without fastener it is an object of the invention to provide a kind of rational in infrastructure, power model, can filled
Divide and utilize installing space, versatility is good, and can improve the screwless fastening type power model of radiating effect.
The present invention is that the technical scheme for reaching above-mentioned purpose is：A kind of screwless fastening type power model, including power model
And radiator, it is characterised in that：The top of described radiator is provided with least one notch with two convex shoulders, described work(
Rate module is provided with the T-shaped block and intermediate mass for being arranged in the notch of radiator, the T on base plate in its base plate bottom
Shape block and intermediate mass are arranged in the notch of radiator, and the cavity passed through with coolant between notch and T-shaped block, extremely
Few two elastic pressuring springs installed in the both sides of intermediate mass, and each elastic pressuring spring elastic compression is each self-corresponding convex in notch
Shoulder bottom, described notch is sealed with base plate by sealing strip at the top of convex shoulder and connected, and notch passes through on the cell wall of convex shoulder
Sealing strip connects with the both sides sealing of T-shaped block, and radiator is provided with Seal end plate at the two ends of notch, is arranged on sealing
At least one joint on end plate is communicated with respective notch.
Wherein：It is described to be provided with convex tendon in pocket bottom in radiator, described notch be it is trapezoidal, the T-shaped head of T-shaped block and
Intermediate mass is also trapezoidal, and the T-shaped head or/and intermediate mass of T-shaped block are supported on convex tendon, are had between T-shaped head and notch cold
But the cavity that liquid passes through.
The notch on a heat sink is set along the transverse direction or length direction of radiator, T-shaped block and radiator on base plate
On notch be correspondingly arranged, Seal end plate is arranged on the transverse ends face of radiator or longitudinal both ends of the surface.
T-shaped block on the base plate is interval with more than two breach, and at least two intermediate mass are arranged on by fastener
On the corresponding breach of base plate, and the top of intermediate mass is provided with the deck used and install elastic pressuring spring, and described deck is located at middle part
Or positioned at the two ends of intermediate mass, the two ends grafting of elastic pressuring spring or be connected on the deck of intermediate mass two-by-two.
T-shaped block on the base plate is interval with more than two breach, and at least two intermediate mass are arranged on by fastener
On the corresponding breach of base plate, and the top of intermediate mass is provided with the deck used and install elastic pressuring spring, and described deck is located at centre
The two ends of block, the two ends grafting of elastic pressuring spring or are connected on the deck of each self-corresponding intermediate mass.
It is described that upper sealing panel is also equipped with the top of radiator, and upper sealing panel is tightly connected with Seal end plate and base plate.
The radiator is provided with more than two power models, and radiator is also equipped between adjacent two power model
Upper sealing panel.
Portion is provided with least notch to the present invention on a heat sink, and base plate is provided with T-shaped block and intermediate mass, by T-shaped block with
Between block be arranged in the notch of radiator, and the elastic pressuring spring by being connected between on block enables the base plate can with radiator
By connection, therefore the space that bolt mounting structure needs can be eliminated, the packing density of power model be improved, after meeting
The installation of continuous module.Base plate of the present invention employs T-shaped block structure, under identical erection space, improves dissipating for base plate
Hot area, therefore its radiating efficiency can be improved.The present invention is by between the T-shaped block and intermediate mass on the notch and base plate of radiator
Cavity forms the logical runner of fluid, therefore radiator and base plate can be radiated by the fluid outside introducing, and base plate
On T-shaped block structure, in the case where vertical thermal resistance is not increased, the thermal capacitance of base plate is increased, when outer loop water is flowed into
Enter in cavity and base plate is carried out to force quick cooling, radiating efficiency can be improved.The present invention is only provided with notch on a heat sink,
And by the T-shaped block and intermediate mass on base plate, can not only facilitate and T-shaped block and intermediate mass are arranged in the notch of radiator,
And also increase the versatility of power model.
Brief description of the drawings
Embodiments of the invention are further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of existing power model.
Fig. 2 is screwless fastening type power module architectures schematic diagram of the present invention.
Fig. 3 is the structural representation that screwless fastening type power model of the present invention pulls down one of power model.
Fig. 4 is the configuration schematic diagram that screwless fastening type power model of the present invention pulls down radiator.
Fig. 5 is screwless fastening type power model vertical structure schematic diagram of the present invention.
Fig. 6 is screwless fastening type power model lateral cross section structural representation of the present invention.
Fig. 7 is mplifying structure schematic diagram at the I of Fig. 5.
Wherein：1-radiator, 1-1-notch, 1-2-convex shoulder, 1-3-convex tendon, 2-screw, 3-power model, 4
- base plate, 4-1-T-shaped block, 4-2-breach, 5-Seal end plate, 5-1-joint, 6-upper sealing panel, 7-sealing
Bar, 8-intermediate mass, 8-1-deck, 9-fastener, 10-elastic pressuring spring,
Specific embodiment
As shown in Fig. 2~7, screwless fastening type power model of the invention, including power model 3 and radiator 1, should
Power model 3 can be the power model of existing various structures, and be fixed on for each device and electrode terminal and cover gold by power model 3
Realize that circuit is connected on category ceramic substrate, and the connection with external power source and equipment and the input/output of drive signal.Work(
The base plate 4 of the bottom of rate module 3 is then connected with radiator 1, and the base plate 4 can use copper soleplate or aluminum soleplate or other heat conduction
The base plate that the material of property is made, produced heat is forced by radiator 1 when by base plate 4, power model 3 is worked
Shed.
As shown in Fig. 2~7, the top of radiator of the present invention 1 is provided with least one notch 1-1 with two convex shoulder 1-2, should
Notch 1-1 can be used as the stopper slot of mounting base 4, but also as the runner that coolant passes through, the notch 1-1 tops
Convex shoulder 1-2 can prevent T-shaped block 4-1 on base plate 4 from departing from radiator 1, and convex shoulder is withstood on by elastic pressuring spring 10
On 1-2, base plate 4 is crimped with radiator 1 and can be connected, eliminate screw and base plate 4 is arranged on radiator 1.
The present invention can also can also be provided with many as shown in figure 4, be provided with two notch 1-1 on radiator 1 on radiator 1
The notch 1-1 of the individual T-shaped block 4-1 on mounting base 4.
As shown in Fig. 2~7, power model of the invention 3 is provided with for being arranged on radiator 1 in its bottom of base plate 4
T-shaped block 4-1 and intermediate mass 8 in notch 1-1, T-shaped block 4-1 and intermediate mass 8 on base plate 4 are arranged on radiating
The cavity passed through with coolant in the notch 1-1 of device 1, and between notch 1-1 and T-shaped block 4-1 and intermediate mass 8,
Both facilitated and base plate 4 was arranged on radiator 1, the area of dissipation of base plate 4 can be increased by T-shaped block 4-1 again, led to
The coolant flowed through in cavity is crossed, heat is derived rapidly, and optimal radiating efficiency can be reached.
As shown in Fig. 4~7, at least two elastic pressuring spring 10 of the invention is arranged on the both sides of intermediate mass 8, and each elasticity pressure
The elastic compression of spring 10 each corresponds to convex shoulder 1-2 bottoms in notch 1-1, and elastic pressuring spring 10 is crimped by its two ends or middle part
On convex shoulder 1-2, by the elastic force of elastic pressuring spring 10 being reliably connected base plate 4 and radiator 1, can be to greatest extent
Utilization space, and the density for meeting power model gradually increases, and preferable radiating effect can be realized.See Fig. 3,5~7
Shown, notch 1-1 of the present invention is sealed with base plate 4 by sealing strip 7 at the top of convex shoulder 1-2 and connected, and notch 1-1 is convex
Connected with the both sides sealing of T-shaped block 4-1 by sealing strip 7 on the cell wall of shoulder 1-2, and radiator 1 is notch 1-1's
Two ends are provided with Seal end plate 5, and the joint 5-1 being arranged on Seal end plate 5 is communicated with respective notch 1-1, is passed through
Each joint 5-1 on Seal end plate 5 is connected with water inlet pipe and water outlet pipe, and outside coolant lead-ingroove is intraoral, and by control
The flow velocity and pressure of coolant are come the cooling requirement needed for conveniently adjusting.
As shown in Fig. 2~7, radiator of the present invention 1 is provided with convex tendon 1-3 in notch 1-1 bottoms, notch 1-1 be it is trapezoidal,
The T-shaped head and intermediate mass 8 of T-shaped block 4-1 are also trapezoidal, and the T-shaped of T-shaped block 4-1 head or/and intermediate mass 8 are supported on convex
On muscle 1-3, the cavity passed through with coolant between T-shaped head and notch 1-1 had both facilitated T-shaped block 4-1 and intermediate mass
8 are arranged in notch 1-1, facilitate coolant by cavity by heat derives again.
As shown in Fig. 2,3, the notch 1-1 on radiator of the invention 1 is set along the length direction of radiator 1, should
Notch 1-1 along radiator 1 horizontally set, the T-shaped block 4-1 on base plate 4 is corresponding with the notch 1-1 on radiator 1
Set, Seal end plate 5 is arranged on the transverse ends face of radiator 1 or longitudinal both ends of the surface, and notch 1-1 is sealed.
As shown in Fig. 4~7, the T-shaped block 4-1 on base plate of the present invention 4 is interval with more than two breach 4-2, at least
Two intermediate mass 8 are arranged on the corresponding breach 4-2 of base plate 4 by fastener 9, and the top of intermediate mass 8 is provided with use
The deck 8-1 of elastic pressuring spring 10 is installed, deck 8-1 is located at middle part or the two ends positioned at intermediate mass 8, elastic pressuring spring 10
Two ends grafting or be connected on the deck 8-1 of intermediate mass 8 two-by-two.
T-shaped block 4-1 on base plate of the invention 4 is interval with more than two breach 4-2, at least two intermediate mass 8
It is arranged on the corresponding breach 4-2 of base plate 4 by fastener 9, and the top of intermediate mass 8 is provided with installation elastic pressuring spring
10 deck 8-1, deck 8-1 be located at intermediate mass 8 two ends, the two ends grafting of elastic pressuring spring 10 or be connected to each
On the deck 8-1 of correspondence intermediate mass 8, the uniform cloth of its pressure is arranged on base plate 4 and dissipated by multiple elastic pressuring springs 10
Between hot device 1.
As shown in Fig. 2,3, the top of radiator of the present invention 1 is also equipped with upper sealing panel 6, and upper sealing panel 6 and sealed end
Plate 5 and base plate 4 are tightly connected, and the present invention is provided with more than two power models 3, and radiator on radiator 1
1 is also equipped with upper sealing panel 6 between adjacent two power model 3, by upper sealing panel 6 and power model 3 and close
End-blocking plate 5 realizes the sealing to the notch 1-1 on radiator 1.
Claims (7)
1. a kind of screwless fastening type power model, including power model（3）And radiator（1）, it is characterised in that：
Described radiator（1）Top be provided with band two convex shoulders（1-2）At least one notch（1-1）, described power mould
Block（3）In its base plate（4）Bottom is provided with for being arranged on radiator（1）Notch（1-1）Interior T-shaped block（4-1）
And intermediate mass (8), base plate（4）On T-shaped block (4-1) and intermediate mass (8) be arranged on radiator（1）Notch（1-1）
It is interior, and notch（1-1）The cavity passed through with coolant between T-shaped block (4-1), at least two elastic pressuring springs（10）
Installed in the both sides in intermediate mass (8), and each elastic pressuring spring（10）Elastic compression is in notch（1-1）It is each self-corresponding
Convex shoulder（1-2）Bottom, described notch（1-1）In convex shoulder（1-2）Top passes through sealing strip (7) and base plate（4）It is close
Envelope connects, notch（1-1）In convex shoulder（1-2）Cell wall on by the both sides sealing of sealing strip (7) and T-shaped block (4-1)
Connect, and radiator（1）In notch（1-1）Two ends Seal end plate (5) is installed, be arranged on Seal end plate (5)
At least one joint (5-1) and respective notch（1-1）Communicate.
2. screwless fastening type power model according to claim 1, it is characterised in that：It is described in radiator（1）
In notch（1-1）Bottom is provided with convex tendon（1-3）, described notch（1-1）It is trapezoidal, the T-shaped head of T-shaped block (4-1)
And intermediate mass (8) is also trapezoidal, the T-shaped head or/and intermediate mass (8) of T-shaped block (4-1) are supported on convex tendon（1-3）On, T
Forming head and notch（1-1）Between the cavity that passes through with coolant.
3. screwless fastening type power model according to claim 1, it is characterised in that：It is described in radiator（1）
On notch（1-1）Along radiator（1）Transverse direction or length direction set, base plate（4）On T-shaped block (4-1) with
Radiator（1）On notch（1-1）It is correspondingly arranged, Seal end plate (5) is installed in radiator（1）Transverse ends face
Or longitudinal both ends of the surface.
4. screwless fastening type power model according to claim 1, it is characterised in that：The base plate（4）On
T-shaped block（4-1）More than two breach (4-2) are interval with, at least two intermediate mass (8) are pacified by fastener (9)
Mounted in base plate（4）On corresponding breach (4-2), and the top of intermediate mass (8) is provided with installation elastic pressuring spring（10）'s
Deck (8-1), described deck (8-1) is located at middle part or the two ends positioned at intermediate mass (8), elastic pressuring spring（10）Two ends
Grafting is connected on the deck (8-1) of intermediate mass (8) two-by-two.
5. screwless fastening type power model according to claim 1, it is characterised in that：The base plate（4）On
T-shaped block（4-1）More than two breach (4-2) are interval with, at least two intermediate mass (8) are pacified by fastener (9)
Mounted in base plate（4）On corresponding breach (4-2), and the top of intermediate mass (8) is provided with installation elastic pressuring spring（10）'s
Deck (8-1), described deck (8-1) is located at the two ends of intermediate mass (8), elastic pressuring spring（10）Two ends grafting or clamping
On the deck (8-1) of each self-corresponding intermediate mass (8).
6. screwless fastening type power model according to claim 1, it is characterised in that：It is described in radiator（1）
Top is also equipped with upper sealing panel (6), and upper sealing panel (6) and Seal end plate (5) and base plate（4）It is tightly connected.
7. screwless fastening type power model according to claim 1 or 5, it is characterised in that：The radiator
（1）More than two power models are installed（3）, and radiator（1）In adjacent two power model（3）Between also
Upper sealing panel (6) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439685.4A CN106711107B (en) | 2015-07-23 | 2015-07-23 | Screwless fastening type power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510439685.4A CN106711107B (en) | 2015-07-23 | 2015-07-23 | Screwless fastening type power module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106711107A true CN106711107A (en) | 2017-05-24 |
| CN106711107B CN106711107B (en) | 2019-02-15 |
Family
ID=58900389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510439685.4A Active CN106711107B (en) | 2015-07-23 | 2015-07-23 | Screwless fastening type power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106711107B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420642A (en) * | 2020-12-04 | 2021-02-26 | 江苏东方四通科技股份有限公司 | Connecting structure of radiator on power module |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257157A (en) * | 1984-06-01 | 1985-12-18 | Matsushita Electric Ind Co Ltd | Radiator |
| DE19729851A1 (en) * | 1997-07-11 | 1999-01-14 | Heinz Ernst | Compression spring fastener for electronic component |
| US6362961B1 (en) * | 1999-04-22 | 2002-03-26 | Ming Chin Chiou | CPU and heat sink mounting arrangement |
| KR20040040183A (en) * | 2002-11-06 | 2004-05-12 | 엘지전자 주식회사 | float heat sink device and the method of constructing |
| CN2696126Y (en) * | 2004-04-06 | 2005-04-27 | 谢步明 | IGBT labyrinth water-cooled heat sink |
| CN201845759U (en) * | 2010-10-15 | 2011-05-25 | 华为终端有限公司 | Radiator and radiating system |
| CN202713857U (en) * | 2012-07-26 | 2013-01-30 | 西蒙电气（中国）有限公司 | Fastening assembly mechanism of circuit board |
| CN203607390U (en) * | 2013-12-10 | 2014-05-21 | 江苏宏微科技股份有限公司 | Modularized packaging structure |
| CN204834599U (en) * | 2015-07-23 | 2015-12-02 | 江苏宏微科技股份有限公司 | Exempt from screw fastening type power module |
-
2015
- 2015-07-23 CN CN201510439685.4A patent/CN106711107B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257157A (en) * | 1984-06-01 | 1985-12-18 | Matsushita Electric Ind Co Ltd | Radiator |
| DE19729851A1 (en) * | 1997-07-11 | 1999-01-14 | Heinz Ernst | Compression spring fastener for electronic component |
| US6362961B1 (en) * | 1999-04-22 | 2002-03-26 | Ming Chin Chiou | CPU and heat sink mounting arrangement |
| KR20040040183A (en) * | 2002-11-06 | 2004-05-12 | 엘지전자 주식회사 | float heat sink device and the method of constructing |
| CN2696126Y (en) * | 2004-04-06 | 2005-04-27 | 谢步明 | IGBT labyrinth water-cooled heat sink |
| CN201845759U (en) * | 2010-10-15 | 2011-05-25 | 华为终端有限公司 | Radiator and radiating system |
| CN202713857U (en) * | 2012-07-26 | 2013-01-30 | 西蒙电气（中国）有限公司 | Fastening assembly mechanism of circuit board |
| CN203607390U (en) * | 2013-12-10 | 2014-05-21 | 江苏宏微科技股份有限公司 | Modularized packaging structure |
| CN204834599U (en) * | 2015-07-23 | 2015-12-02 | 江苏宏微科技股份有限公司 | Exempt from screw fastening type power module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420642A (en) * | 2020-12-04 | 2021-02-26 | 江苏东方四通科技股份有限公司 | Connecting structure of radiator on power module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106711107B (en) | 2019-02-15 |
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