EP4681512A1 - Dispositif de régulation thermique pour un composant, notamment un module électronique de puissance - Google Patents
Dispositif de régulation thermique pour un composant, notamment un module électronique de puissanceInfo
- Publication number
- EP4681512A1 EP4681512A1 EP24710468.0A EP24710468A EP4681512A1 EP 4681512 A1 EP4681512 A1 EP 4681512A1 EP 24710468 A EP24710468 A EP 24710468A EP 4681512 A1 EP4681512 A1 EP 4681512A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plates
- regulation device
- stack
- thermal regulation
- component
- 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
Definitions
- Thermal regulation device for a component, in particular an electronic power module
- the present invention relates to a thermal regulation device for cooling and/or heating at least one component whose operation is sensitive to temperature, this component being in particular an electronic power module of an inverter.
- Patent application WO2022248427 discloses a cooling structure comprising stacked plates forming a network of openings and chambers for the flow of a cooling fluid. This structure is placed in a conduit and this conduit is closed by a base plate of a power electronic module. The cooling fluid meanders within this structure.
- the invention aims to propose a new type of thermal regulation device.
- the invention thus relates to a thermal regulation device for cooling and/or heating at least one component whose operation is sensitive to temperature, this component being in particular an electronic power module of an inverter, this thermal regulation device comprising a stack of plates brazed together and forming a sealed body within which is arranged at least one heat transfer fluid circulation channel which extends through at least some of the plates of the stack.
- the design and manufacture of the thermal regulation device can be simplified, because multiple and complex operations can be avoided, such as hot plastic deformation (also called Friction Stir Welding or FSW in English), machining, surfacing.
- hot plastic deformation also called Friction Stir Welding or FSW in English
- FSW Friction Stir Welding
- the invention also makes it possible to avoid the use of castings.
- the invention also makes it possible to avoid any direct hydraulic leakage path between the fluid inlet and outlet, because the plates are brazed and sealed together.
- the present invention makes it possible to maximize heat exchanges with the channel(s) within the stack because no volume is lost, for example for hot plastic deformation and because of added parts.
- the invention also makes it possible to reduce the total mass of the exchanger with equal performance.
- the plates all have the same thickness within the stack.
- the plates have different thicknesses.
- some plates have a first thickness and some of the other plates have a second thickness different from the first thickness.
- the total number of plates can be between 5 and 20, in particular between 5 and 15 or between 5 and 10.
- the plates can have a thickness of the order of 1 mm.
- the stack comprises a cover plate which is solid and which defines at least one placement zone for receiving a component, in particular a plurality of placement zones.
- this cover plate is devoid of a through opening.
- this cover plate is at one of the ends of the stack.
- the stack comprises a base plate which is provided with at least one through opening forming, for the channel(s) of the stack, a heat transfer fluid inlet or outlet.
- the base plate of the stack comprises both a heat transfer fluid inlet and an outlet.
- the fluid inlet and/or outlet are of elongated shape, for example with each two straight edges connecting on each side to an arc of a circle.
- the thermal regulation device comprises at least one connector mounted on the base plate and configured to fluidically connect the fluid outlet of the stack with an external heat transfer fluid evacuation conduit.
- the base plate carries two connections, in particular crimped and brazed on this base plate.
- the connectors each comprise a tube.
- the plates comprise mechanical attachment shapes, in particular each in the form of an ear.
- attachment shapes are formed inside a main perimeter of the stack of plates.
- each form of mechanical attachment comprises an orifice which, by being aligned with the respective orifices of the other plates, makes it possible to receive a fastening element, for example a tie rod, which holds the stack on a structural element of the vehicle.
- a fastening element for example a tie rod
- the connector comprises one or more forms of mechanical attachment, in particular each in the form of an ear.
- the plates of the stack each comprise a keying element configured to identify an orientation of the corresponding plate relative to the other plates when placing the plates relative to each other.
- the foolproofing element is formed by a mechanical attachment shape which is offset, in particular in an axial direction, relative to one or more other mechanical attachment shapes.
- the keying element is formed by a hole present on the stack to define a visual positioning indicator.
- the keying element is formed by a notch present on the stack to define a visual positioning indicator.
- the notch is present at a corner of the stack.
- the notch is present along a perimeter edge of the stack, and may have steps.
- the stack of plates forms a network of channels therein configured to cool the component(s) placed on the cover plate.
- the network of channels can make one or more fluid passes in contact with the cover plate.
- the plates all have the same circumference.
- the plates are made from aluminum, in particular made from an aluminum alloy, for example type 3003.
- At least one of the plates comprises an aluminum core and a brazing material, this brazing material being in particular of the aluminum alloy type 3003, 4343 or 4045.
- the brazing material can be on a lower face, an upper face or both faces of the plate.
- This brazing material is called “Cladding” in English.
- the invention also relates to an assembly comprising the thermal regulation device as mentioned above, and at least one electronic power module, in particular for an inverter, placed on a placement zone of the thermal regulation device, so that to allow heat exchange between the heat transfer fluid circulating within the thermal regulation device and the electronic power module.
- This placement zone thus forms a heat exchange zone.
- the invention also relates to a method of manufacturing a thermal regulation device for cooling and/or heating at least one component whose operation is sensitive to temperature, this component being in particular an electronic power module of an inverter, this method comprising the following steps:
- the brazing material is initially in the form of a sheet deposited on the aluminum core, or assembled by co-lamination.
- the stacked plate(s) are initially provided with brazing material, on one side only or alternatively on both sides.
- the stack is passed through a brazing furnace to carry out the brazing, with or without pressurization.
- the stack comprises at least one weld bead produced around a periphery of this stack and possibly between the component placement zones, which are heat exchange zones, for each module, in particular by hot plastic deformation (FSW).
- FSW hot plastic deformation
- This weld bead helps to reinforce the sealing of the channel(s) within the stack.
- FIG. 1 Figure 1 is a perspective representation, from above, of a thermal regulation device according to an exemplary implementation of the invention
- Figure 2 is a side view of the thermal control device of Figure 1, from below;
- Figure 3 is a perspective representation of a plate of the thermal regulation device illustrated in Figures 1 and 2;
- Figure 4 is a representation of a stack of plates according to an example of the invention, with one type of keying element;
- Figure 5 is a representation of a stack of plates according to another example of the invention, with another type of keying element;
- Figure 6 is a representation of a stack of plates according to another example of the invention, with another type of keying element;
- Figure 7 is a representation of a stack of plates according to another example of the invention, with another type of keying element.
- FIGS 1 and 2 show a thermal regulation device 1 for cooling several electronic power modules 50 of an inverter. Here, there are three electronic power modules 50 (only one of which is shown in dotted lines).
- the thermal regulation device 1 comprises a stack 2 of plates 3 brazed together and forming a sealed body 4 within which are arranged channels 5 for circulation of heat transfer fluid, for example glycolated water, which extend through some of the plates 3 of the stack 2.
- heat transfer fluid for example glycolated water
- These channels 5 are for example defined by openings 7 in plates 3, openings 7 which form, depending on the stacking of the plates 3, the channels 5. These channels 5 can allow the fluid to circulate in a direction F1 and in a direction F2 to accomplish the desired fluid passes, as can be seen in figure 3.
- the plates 3 all have the same thickness within the stack 2. Alternatively, the plates have different thicknesses.
- the stack 2 comprises a cover plate 9 which is solid and which defines placement zones 10 for each receiving an electronic power module 50.
- This cover plate 9 has no through opening, and is located at one end of the stack 2.
- the stack 2 further comprises a base plate 11 which is provided with through openings 12 forming, for the channels 5 of the stack, an inlet or an outlet for heat transfer fluid.
- These through openings 12 are of elongated shape, for example with each two straight edges connecting on each side to an arc of a circle.
- the thermal regulation device 1 comprises two connectors 15 mounted, in particular by crimping and brazing, on the base plate 11 and each configured to fluidically connect the fluid inlet of the stack 2 with an external supply conduit (not shown) of heat transfer fluid.
- the connectors 15 each comprise a tube 16.
- Plates 3, 9 and 11 have mechanical attachment forms 17, each in the form of an ear in the example described.
- attachment shapes are formed inside a main perimeter of the stack of plates.
- Each mechanical attachment form 17 comprises an orifice 18 which, by being aligned with the respective orifices of the other plates, makes it possible to receive a fixing element, for example a tie rod, which holds the stack 2 on a structural element of the vehicle.
- a fixing element for example a tie rod
- connection 15 comprises mechanical attachment forms 17 in the manner of the plates of the stack 2.
- the plates 3 of the stack 2 may each comprise a keying element configured to identify an orientation of the corresponding plate relative to the other plates 3 when placing the plates relative to each other.
- the foolproofing element is formed by a mechanical attachment shape 20 which is offset, in an axial direction X, relative to the other mechanical attachment shapes 17.
- the keying element is formed by a hole 21 present on the stack 2 to define a visual positioning indicator.
- the keying element is formed by a notch 22 present on the stack to define a visual positioning indicator.
- This notch 22 is present at a corner 23 of the stack 2.
- the notch 24 is present along a peripheral edge of the stack 2, and may have steps 25.
- the stack 2 of plates forms a network of channels 5 within it configured to cool the components placed on the cover plate 9.
- the channel network 5 can make one or more fluid passes in contact with the cover plate.
- Plates 3 all have the same outline, generally rectangular with rounded corners 23.
- Plates 3 are made of an aluminum alloy, for example type 3003.
- the plates 3 comprise an aluminum core and a brazing material, this brazing material being in particular of the aluminum alloy type 3003, 4343 or 4045.
- the brazing material can be on a lower face, an upper face or both faces of the plate.
- the thermal regulation device 1 and the modules 50 placed on it form an assembly 60.
- the placement zones 10 are all on the same main face 26 of the thermal regulation device 1.
- the thermal regulation device 1 is manufactured by a process which comprises the following steps:
- the plates are all brazed at the same time so that there is only one pass through the oven.
- the brazing material is initially in the form of sheet deposited on the aluminum core, or assembled by co-lamination.
- the stack 2 may include a weld bead made around a periphery of this stack and possibly between the placement zones 10 of the components, which are heat exchange zones, for each module, in particular by hot plastic deformation (FSW).
- FSW hot plastic deformation
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2302403A FR3146780A1 (fr) | 2023-03-15 | 2023-03-15 | Dispositif de régulation thermique pour un composant, notamment un module électronique de puissance |
| PCT/EP2024/056886 WO2024189172A1 (fr) | 2023-03-15 | 2024-03-14 | Dispositif de régulation thermique pour un composant, notamment un module électronique de puissance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4681512A1 true EP4681512A1 (fr) | 2026-01-21 |
Family
ID=86657483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24710468.0A Pending EP4681512A1 (fr) | 2023-03-15 | 2024-03-14 | Dispositif de régulation thermique pour un composant, notamment un module électronique de puissance |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4681512A1 (fr) |
| CN (1) | CN120898526A (fr) |
| FR (1) | FR3146780A1 (fr) |
| WO (1) | WO2024189172A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4314738B2 (ja) * | 2000-11-24 | 2009-08-19 | 株式会社デンソー | 積層冷却器 |
| JP5619538B2 (ja) * | 2010-09-06 | 2014-11-05 | 株式会社ティラド | 細流路インナーフィンを有する熱交換器のフラックスレスろう付け方法およびそれに用いるアルミニウムクラッド材 |
| EP4349143A1 (fr) | 2021-05-27 | 2024-04-10 | Valeo eAutomotive Germany GmbH | Structure de refroidissement, module de puissance comprenant une telle structure de refroidissement, convertisseur de puissance électrique, tel qu'un onduleur, comprenant un tel module de puissance |
-
2023
- 2023-03-15 FR FR2302403A patent/FR3146780A1/fr active Pending
-
2024
- 2024-03-14 WO PCT/EP2024/056886 patent/WO2024189172A1/fr not_active Ceased
- 2024-03-14 CN CN202480018480.6A patent/CN120898526A/zh active Pending
- 2024-03-14 EP EP24710468.0A patent/EP4681512A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024189172A1 (fr) | 2024-09-19 |
| CN120898526A (zh) | 2025-11-04 |
| FR3146780A1 (fr) | 2024-09-20 |
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Legal Events
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Effective date: 20250910 |
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Owner name: VALEO ELECTRIFICATION |