EP4136943A1 - Ensemble électronique avec circuit de refroidissement - Google Patents
Ensemble électronique avec circuit de refroidissementInfo
- Publication number
- EP4136943A1 EP4136943A1 EP21716447.4A EP21716447A EP4136943A1 EP 4136943 A1 EP4136943 A1 EP 4136943A1 EP 21716447 A EP21716447 A EP 21716447A EP 4136943 A1 EP4136943 A1 EP 4136943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- housing
- electronic assembly
- cooling circuit
- electronic
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20254—Cold plates transferring heat from heat source to coolant
Definitions
- the present invention relates to the cooling of an electronic assembly of the electric motor of an electric or hybrid motor vehicle.
- the electronic assembly comprises at least one power module, the temperature of which rises during its operation.
- This temperature increase creates significant damage to the power module itself and to the other elements of the electronic assembly.
- the cooling circuit is commonly formed by a tube in which a cooling fluid circulates.
- This duct is placed in a slot of the groove, duct or trough type placed as close as possible to the elements to be cooled. Maintaining the tube in the housing is achieved in several ways. For example, the tube is held in place by overmolding or brazing. However, these techniques are difficult to achieve.
- Another way to keep the tube in the housing is to glue it. It is then necessary to use a large amount of glue, which increases the cost of manufacturing the system.
- Another retaining technique consists of inserting the tube by pressure into the housing. However, the air remaining between the tube and the housing decreases heat exchange, and therefore the efficiency of the system.
- the object of the present invention is therefore to alleviate one or more of the drawbacks of the devices of the prior art by proposing a cooling system in which the tube in which the cooling liquid circulates is arranged in a housing so as to optimize the heat exchanges while at the same time. limiting costs and manufacturing difficulties.
- the present invention provides an electronic assembly comprising an electronic system and a cooling circuit in which a cooling fluid circulates, the cooling circuit being formed by a tube arranged in a housing in contact with at least part of the electronic system, the circuit tube cooling being a tube pressure inserted into the housing, a thermally conductive material being disposed between the tube and the housing.
- the pressure insertion allows the tube to be positioned as close as possible to the surface of the housing and thus limits the amount of thermal conductive material used.
- the housing is a groove formed in the foundry of the electronic assembly.
- the housing is dimensionally stable. It is therefore the tube which is deformed to be inserted and is then mechanically blocked.
- the size of the housing is adapted to the size of the tube so that pressure must be exerted on the tube to insert it into the housing.
- a thermally conductive material is placed between the tube and the housing.
- the tube of the cooling circuit is traversed by a cooling fluid
- the tube of the cooling circuit is made of aluminum.
- the electronic system comprises at least one power module.
- the invention also relates to a method of manufacturing an electronic assembly according to the invention comprising:
- the pressing tool is formed from several pressing elements, the inner face of which has a shape complementary to the outer face of the tube.
- FIG. 1 is a schematic representation of a sectional view of an electronic assembly according to the invention
- FIG. 2 is a schematic representation of a sectional view of part of an electronic assembly before insertion of the tube according to the invention
- FIG. B is a schematic representation of a sectional view of part of an electronic assembly after insertion of the tube according to the invention
- FIG. 4 is an elevational representation of part of the electronic assembly according to the invention.
- FIG. 5 is a schematic representation of the method according to the invention.
- the [Fig. 1] illustrates an electronic assembly 1 comprising an electronic system 3 with a cooling circuit 8 according to the invention.
- the electronic assembly is the electronic assembly of the electric motor of an electric or hybrid motor vehicle.
- the electronic system 3 comprises at least one power module 3.
- the electronic system 1 comprises power electronics components.
- the electronic system 3 comprises components of the control electronics.
- the electronic system 3 is distributed over a support 2.
- the support 2 is formed by the foundry. More precisely, the support is a part of the foundry.
- the cooling circuit 8 is formed by a tube 5 arranged in a housing 6 in contact with at least part of the electronic system 3. Housing 6 cannot be deformed.
- the housing 6 is formed in the foundry 2 of the electronic assembly 1.
- the housing 6 is a groove formed in the foundry 2. This groove has the shape of an open channel or chute.
- the size of the housing 6 is matched to the size of the tube 5 so that pressure must be exerted on the tube 5 to insert it into the housing 6. More specifically, the diameter of the housing 6 is smaller than that of the tube. tube 5. The tube having a tendency to want to resume its original shape is thus mechanically blocked in the housing after its insertion.
- the housing 6 is arranged so as to be in contact with at least part of the electronic system 3. For example, as illustrated [Fig. 4], the housing is arranged around the electronic system.
- the cooling circuit 8 is thus arranged so as to allow cooling of the electronic components and more particularly of the power module 3.
- the tube 5 of the cooling circuit is made of aluminum.
- the tube has a diameter of 10 mm and a length of 50 mm.
- a thermally conductive material 4 is placed between the tube 5 and the housing 6. More precisely, after insertion into the housing 6, a space remains between the outer surface 52 of the tube 5 and the surface 61du. housing 6. This space is filled with air, which does not allow optimized heat exchange between the fluid circulating in the tube and the electronic system to be cooled. It is this space that is filled with thermal conductive material.
- the fact that the tube is pressed by insertion into the housing and yet mechanically blocked limits the amount of thermal conductive material to be used, unlike the system of the prior art where the use of glue is done. without pressure insertion of the tube into the housing.
- the tube is simply glued, and it could have been obvious that this technique makes it possible to limit the quantity since the tube is not mechanically blocked and it is possible to keep it as close as possible to the surface of the tube. lodging.
- the insertion by pressure makes it possible to position the tube as close as possible to the surface of the housing and thus limits the quantity of thermal conductive material used.
- the thermally conductive material 4 is glue.
- the tube 5 of the cooling circuit is traversed by a cooling fluid.
- the cooling fluid is water.
- the cooling fluid is a water-glycol mixture.
- the invention also relates to the method 100 for inserting the tube of the cooling circuit into the housing.
- a housing 6 is created in the foundry 2.
- the creation of this housing 6 is carried out in a conventional manner.
- the tube 5 is positioned 30 at the entrance of the housing [Fig. 2], then is inserted [Fig. 3] by force in the housing 6 over its entire length with a pressing tool 7.
- the pressing force exerted is 6000N.
- the pressing tool 7 is formed from several pressing elements 7.
- the pressing elements 7 are positioned along the tube 5 so as to allow, when they press on the tube 5, the total insertion of the tube 5 into the housing 6.
- the total insertion relates to the length of the tube 5, c 'that is to say that the tube 5 is inserted into the housing 6 over its entire length.
- the number of pressing elements 7 is defined as a function of the length of the tube 5 to be pressed into the housing 6.
- These pressing elements 7 have for example the shape of a cube, the inner face 71 of which has a shape complementary to the outer face 51 of the tube 5.
- the inner face 71 is the face in contact with the tube 5.
- the pressing elements 7 have any shape allowing them to be positioned correctly and so as to guide the tube 5 in the housing 6 and allow its insertion. total in housing 6.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2003738A FR3109258B1 (fr) | 2020-04-14 | 2020-04-14 | Ensemble électronique avec circuit de refroidissement |
| PCT/EP2021/059001 WO2021209290A1 (fr) | 2020-04-14 | 2021-04-07 | Ensemble électronique avec circuit de refroidissement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4136943A1 true EP4136943A1 (fr) | 2023-02-22 |
Family
ID=74553862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21716447.4A Pending EP4136943A1 (fr) | 2020-04-14 | 2021-04-07 | Ensemble électronique avec circuit de refroidissement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4136943A1 (fr) |
| CN (1) | CN115399084A (fr) |
| FR (1) | FR3109258B1 (fr) |
| WO (1) | WO2021209290A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090097A (zh) * | 2007-05-30 | 2007-12-19 | 秦彪 | 热管式cpu散热器及制造工艺 |
| EP2114116B1 (fr) * | 2008-04-29 | 2013-06-05 | Agie Charmilles SA | Refroidissement hybride |
| CN101969752B (zh) * | 2009-10-16 | 2013-06-26 | 深圳市超频三科技有限公司 | 散热器支承座、散热器、散热器制造方法及挤压卡合方法 |
| CN102684359B (zh) * | 2012-05-18 | 2015-07-15 | 福建亚南电机有限公司 | 一种混合动力汽车驱动电机水冷机壳 |
| DE102012215787B4 (de) * | 2012-09-06 | 2014-06-05 | Siemens Aktiengesellschaft | Leistungselektronisches System mit Flüssigkeitskühleinrichtung und Fahrzeug damit |
-
2020
- 2020-04-14 FR FR2003738A patent/FR3109258B1/fr active Active
-
2021
- 2021-04-07 EP EP21716447.4A patent/EP4136943A1/fr active Pending
- 2021-04-07 WO PCT/EP2021/059001 patent/WO2021209290A1/fr not_active Ceased
- 2021-04-07 CN CN202180028833.7A patent/CN115399084A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3109258A1 (fr) | 2021-10-15 |
| WO2021209290A1 (fr) | 2021-10-21 |
| FR3109258B1 (fr) | 2023-04-14 |
| CN115399084A (zh) | 2022-11-25 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
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| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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