EP4356701A1 - Boitier pour équipement électrique avec joint - Google Patents
Boitier pour équipement électrique avec jointInfo
- Publication number
- EP4356701A1 EP4356701A1 EP22737393.3A EP22737393A EP4356701A1 EP 4356701 A1 EP4356701 A1 EP 4356701A1 EP 22737393 A EP22737393 A EP 22737393A EP 4356701 A1 EP4356701 A1 EP 4356701A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- face
- seal
- peripheral wall
- contact
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/061—Hermetically-sealed casings sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing
-
- 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
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
Definitions
- the invention relates to boxes for electrical equipment, in particular on-board chargers, DC-DC voltage converters, inverters or other electrical equipment requiring a sealing device, such as for example a sealed box.
- the present invention aims in particular to reduce the size of such a box.
- An advantage of the invention is to save space in a limited environment, in particular in the field of electric motorization systems for vehicles.
- FIG. 1 a box accommodating a seal in a groove is used, illustrated in Figure 1.
- the box 1 has a groove on a peripheral wall 4 accommodating a seal 8.
- FIG. 2 Another solution known in the prior art is shown in Figure 2.
- the seal 8 is covered by a cover 15 having an extension to cover it externally.
- the invention relates to a housing for electrical equipment of reduced size with a seal. More specifically, the invention relates to a housing for equipment electric comprising a housing with a bottom and a peripheral wall extending from said bottom.
- the peripheral wall forms a perimeter of said housing and comprises an inner surface, an outer surface, and a stop surface connecting said inner surface to said outer surface opposite said bottom.
- Said stopping surface receives a seal.
- Said seal extends along the periphery of said housing and has a stop face, coming into contact with said stop surface; an upper face, opposite the stop face and intended to come into contact with a cover; an outer contact face, coming into contact with said outer surface of the peripheral wall; and an inner contact face.
- Said inner contact face faces said inner surface of the peripheral wall.
- the inner contact face of the seal comes into contact with the inner surface of the peripheral wall.
- the positioning of the seal can be more reliable and durable.
- the seal thus envelops the peripheral wall and in particular the stop surface, its reliability can be increased.
- the stop face and/or the upper face comprise at least one groove.
- the seal When the case is closed by a cover, when the seal is compressed, it will be able more easily, thanks to the groove, to match the shapes of the parts with which it is in contact, in particular the shape of the stop surface or a part of the lid.
- the seal will be able to compensate at least in part for the variations in shape linked to the manufacturing uncertainties of one of these, or both; and increase the tightness of the case once closed by the cover.
- the seal may also include several grooves on the stop face and/or on the upper face.
- the housing can receive at least one electronic component and a portion of the seal to which the inner contact face belongs can extend so as to be arranged between all or part of a surface of this electronic component and the inner surface of the peripheral wall of the casing, in order to provide electrical insulation between the electronic component and the peripheral wall.
- the seal is in particular a material which serves as an electrical insulator between the electronic component and the peripheral wall. This will avoid the use of an added insulating support.
- the inner contact face is arranged between all or part of a surface of this electronic component and the inner surface of the wall peripheral of the housing, in particular when viewed in a direction parallel to the bottom of the housing.
- the electronic component is an electronic card, in particular a printed circuit card.
- the electronic card can extend in a plane parallel to the bottom.
- the electronic card carries at least one electronic element, which extends towards the bottom of the housing.
- a surface of the electronic card extends facing the bottom of the case.
- the electronic element can extend from this surface of the card towards the bottom of the housing.
- the electronic element extends towards the bottom of the housing, and the portion of the seal to which the inner contact face belongs extends so as to be disposed between all or part of a surface of this component.
- electronics and the inner surface of the peripheral wall of the housing In a case where the card has different electronic elements, the extent of the joint can be adjusted according to the size of each electronic element.
- the part of the seal arranged between the peripheral wall of the case and the electronic element may extend more significantly towards the bottom of the case, compared to another part of the seal arranged between the peripheral wall of the case, and a zone of the printed circuit board devoid of any electronic element.
- the electronic element can also be arranged on the electronic card so as to move away from this background.
- the extent of the portion of the seal to which the inner contact face belongs extends so as to be arranged between all or part of a surface of this electronic component and the inner surface of the peripheral wall of the casing.
- the seal consists of a material loaded with metal particles.
- the joint can be made of silicone loaded with metal particles.
- the gasket can increase the electromagnetic isolation between the equipment inside the enclosure and the environment.
- the outer contact face of the seal extends from the outer surface towards the bottom of the housing, in order to provide electromagnetic insulation between said housing and the external environment.
- the gasket can replace part of the cover and it can achieve the electromagnetic isolation between the inside and the outside of the case.
- the case includes a cover, coming into contact with the upper face of the seal.
- the seal has an outer face opposite the outer contact face and the cover has an outer edge, the outer edge is aligned with the outer face of the seal. This alignment of the outer face of the seal and the outer edge of the cover can make it possible to reduce the size of the box.
- the cover comprises an extension which externally covers the outer face of the gasket.
- This extension could, for example, increase the EMC insulation (electromagnetic compatibility) of the electrical equipment contained in the box.
- the extension can also advantageously protect the joint from environmental influences, such as dust or liquids. Thus the durability of the joint can be increased.
- the cover comprises at least one positioning rib, the rib extending from the cover towards the bottom of the housing following the periphery of the housing, inside the seal.
- the rib will make it possible to place the cover in the right direction, and/or to hold the seal in place more easily.
- the rib may run along entirely - in parallel - the perimeter of the housing. It may also come only next to the seal, in order to facilitate the placement of the lid, which comes into contact with the seal in particular only on one part.
- protrusions of a conical or cylindrical shape may also be used, extending from the cover towards the bottom.
- the box can accommodate at least one on-board charger, a DC-DC voltage converter and an inverter.
- the cover can extend essentially in a plane parallel to the bottom. A part of the lid, which comes into contact with the upper face of the gasket, can be in said plane of the lid. [025]
- the cover may comprise a main surface, which extends in the plane parallel to the bottom, and edges perpendicular to this main surface. Said edges of the cover can remain free of the seal.
- the cover can rest on the box and stop edge to edge with the outer face of the gasket.
- the box for electrical equipment as described, can be used in a high voltage environment, more than 48V, even more than 80V or more than 100V, in particular 300V.
- the box for electrical equipment can be used in a medium voltage environment, such as an on-board network of a vehicle, the nominal voltage of which is for example 12V or 48V
- the enclosure for electrical equipment as described, can also be used in a low voltage environment.
- FIG. 2 represents a diagram of the prior art, in section, already described,
- Figure 3 shows a cross-sectional diagram of an embodiment of the invention
- Figure 4 shows a sectional diagram of another embodiment of the invention, the cover of which comprises a groove
- FIG. 5 shows a sectional diagram of another embodiment of the invention with a printed circuit board
- Figure 6 shows a cross-sectional diagram of another embodiment of the invention with a printed circuit board, and an extension of the cover
- figure 7 represents a sectional diagram of another embodiment of the invention with a printed circuit board and an electronic element
- Figure 8 shows a cross-sectional diagram of another embodiment of the invention, in particular a seal with grooves.
- Figures 3 to 8 show a housing 1 for electrical equipment, comprising a housing 2 with a bottom 3 and a peripheral wall 4 extending from said bottom 3.
- the housing 2 is provided to accommodate electrical equipment.
- the peripheral wall forms a perimeter of the housing 2 and comprises an inner surface 5, an outer surface 6, and a stop surface 7 connecting the inner surface 5 to the outer surface 6 opposite the bottom 3.
- the peripheral wall receives a seal 8, which extends along the periphery of the housing 2.
- the seal 8 comprises a stop face 9, coming into contact with the stop surface 7, an upper face 10, opposite the stop face 9 and coming into contact with a cover 15.
- the seal (8) also comprises an inner contact face 11, facing the inner surface 5 of the peripheral wall 4 and an outer contact face 21, coming into contact with the outer surface 6 of the peripheral wall (4).
- the housing 1 is made in particular of an electrically conductive material, for example aluminum.
- the seal 8 on the other hand is made in particular of an electrically non-conductive material, for example silicone.
- the cover 15 can be fixed in any known way to the housing 1. The fixing is not shown.
- the cover 15 has an outer edge 16, which is aligned with an outer face 17 arranged opposite the outer contact face 21 of the seal 8.
- Figure 4 shows a housing 1 for electrical equipment, according to another embodiment.
- the seal 8 comes into contact on the peripheral wall 4 on three surfaces, in particular on the inner surface 5, the outer surface 6, and the stop surface 7.
- the outer face 17 of the seal 8 extends outside the housing 1 towards the bottom 3.
- the outer edge 16 of the cover 15 is aligned with an outer face 17 of the seal 8.
- the cover has a rib 19 for positioning.
- the rib 19 extends from the cover 15 in the direction of the bottom 3 of the housing 2 following the periphery of the housing 2, inside the seal 8. Indeed, the rib 19 comes opposite or in contact with a part of the seal 8. The rib 19 thus facilitates the positioning of the cover 15 on the case 1.
- Figure 5 shows a housing 1 for electrical equipment, according to another embodiment.
- the seal 8 comes into contact on the peripheral wall 4 on three surfaces, in particular on the inner surface 5, the outer surface 6, and the stop surface 7.
- the outer face 17 of the seal 8 extends outside the housing 1 towards the bottom 3.
- the outer edge 16 of the cover 15 is flush with an outer face 17 of the seal 8.
- an electrical component 13 is received in the housing 2
- the electrical component 13 is in particular an electronic card, for example a printed card.
- a portion of the gasket 8 to which the inner contact face 11 belongs extends so as to be arranged between all or part of a surface of this electronic component 13 and the inner surface 5 of the peripheral wall 4 of the casing 1.
- the seal 8 can replace part of the cover so as to achieve the electromagnetic insulation between the housing 2 and the external environment, extending from the outer surface 6 towards the bottom 3 of the housing 2. This is particularly the case when the seal 8 consists of an insulating material loaded with metal particles.
- the inner contact face 11 is arranged between all or part of a surface of this electronic component 13 and the inner surface 5 of the peripheral wall 4 of the housing 1, in particular when viewed in a direction parallel to the bottom 3 of slot 2.
- Figure 6 shows a housing 1 for electrical equipment, according to another embodiment.
- the seal 8 comes into contact on the peripheral wall 4 on three surfaces, in particular on the inner surface 5, the outer surface 6, and the stop surface 7.
- the face 17 of gasket 8 extends outside of housing 1 towards bottom 3.
- Cover 15 includes an extension 18 externally covering the outer face of gasket 8.
- Figure 7 shows a housing 1 for electrical equipment, according to another embodiment.
- the seal 8 comes into contact on the peripheral wall 4 on three surfaces, in particular on the inner surface 5, the outer surface 6, and the stop surface 7.
- the electronic card 13 carries at least one electronic element 14, extending towards the bottom 3 of the housing 2.
- the inner contact face 11 of the seal 8 is extended facing the electronic element.
- the outer face 17 of the seal 8 extends outside the housing 1 towards the bottom 3.
- Figure 8 shows a seal 8 with grooves 12, positioned between the cover 15 and the stop surface 7.
- the stop face 9 and the upper face 10 have grooves 12. These grooves 12 provide flexibility to the seal 8.
- the figure shows three grooves 12 on the stop face 9 and the upper face, but any other number is possible.
- the seal 8 has grooves only on one side among the upper face 10 and the stop face 9.
- the rib 19 can be combined, for example, with the embodiments illustrated in FIGS. 5 to 7.
- the seal 8, as illustrated in FIG. 8, can be integrated into the embodiments illustrated in FIGS. 3 to 7 .
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106448A FR3124347B1 (fr) | 2021-06-17 | 2021-06-17 | Boitier pour équipement électrique avec joint |
| PCT/EP2022/066341 WO2022263528A1 (fr) | 2021-06-17 | 2022-06-15 | Boitier pour équipement électrique avec joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4356701A1 true EP4356701A1 (fr) | 2024-04-24 |
Family
ID=77317108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22737393.3A Pending EP4356701A1 (fr) | 2021-06-17 | 2022-06-15 | Boitier pour équipement électrique avec joint |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4356701A1 (fr) |
| FR (1) | FR3124347B1 (fr) |
| WO (1) | WO2022263528A1 (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017209657A1 (de) * | 2017-06-08 | 2018-12-13 | Robert Bosch Gmbh | Gehäuse für ein Elektrogerät mit einem dicht angeformten Gehäuseteil |
-
2021
- 2021-06-17 FR FR2106448A patent/FR3124347B1/fr active Active
-
2022
- 2022-06-15 WO PCT/EP2022/066341 patent/WO2022263528A1/fr not_active Ceased
- 2022-06-15 EP EP22737393.3A patent/EP4356701A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022263528A1 (fr) | 2022-12-22 |
| FR3124347B1 (fr) | 2024-03-08 |
| FR3124347A1 (fr) | 2022-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20231109 |
|
| AK | Designated contracting states |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VALEO ELECTRIFICATION |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |