FR3121395A1 - Ribbed casing for a powertrain, powertrain comprising a ribbed casing and method of sizing a ribbed casing. - Google Patents
Ribbed casing for a powertrain, powertrain comprising a ribbed casing and method of sizing a ribbed casing. Download PDFInfo
- Publication number
- FR3121395A1 FR3121395A1 FR2103414A FR2103414A FR3121395A1 FR 3121395 A1 FR3121395 A1 FR 3121395A1 FR 2103414 A FR2103414 A FR 2103414A FR 2103414 A FR2103414 A FR 2103414A FR 3121395 A1 FR3121395 A1 FR 3121395A1
- Authority
- FR
- France
- Prior art keywords
- ribs
- ribbed
- casing
- processed
- distance
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004513 sizing Methods 0.000 title claims 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 235000012773 waffles Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2410/00—Constructional features of vehicle sub-units
- B60Y2410/10—Housings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Casings For Electric Apparatus (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
L’invention concerne une enveloppe nervurée (1) pour un groupe motopropulseur électrique et son procédé de dimensionnement, ladite enveloppe nervurée comprenant une paroi (13) et une pluralité de premières nervures parallèles (11), chaque première nervure (11) étant espacée d’une première nervure voisine (11) d’une distance d1 comprise entre 1 cm et 3,3 cm. Figure pour l’abrégé : Fig. 3The invention relates to a ribbed casing (1) for an electric power train and its dimensioning method, said ribbed casing comprising a wall (13) and a plurality of first parallel ribs (11), each first rib (11) being spaced a first neighboring rib (11) by a distance d1 of between 1 cm and 3.3 cm. Figure for the abstract: Fig. 3
Description
L’invention concerne le domaine des groupes motopropulseurs de véhicule en particulier des groupes motopropulseurs électriques.The invention relates to the field of vehicle powertrains, in particular electric powertrains.
En raison des excitations du réducteur et de la machine électrique, les éléments de structure d’un groupe motopropulseur peuvent vibrer sur leur propre mode et propager du bruit vers l’intérieur ou l’extérieur du véhicule.Due to the excitations of the reducer and the electrical machine, the structural elements of a powertrain can vibrate on their own mode and propagate noise towards the interior or exterior of the vehicle.
Pour lutter contre les vibrations, il est connu de munir les groupes motopropulseurs de plots de suspension, notamment entre le moteur et le châssis, mais ces plots ne sont efficaces qu’à l’encontre de vibrations comprises entre 20 Hz et 200 Hz.To combat vibrations, it is known to provide powertrains with suspension studs, in particular between the engine and the chassis, but these studs are only effective against vibrations between 20 Hz and 200 Hz.
L’objectif de l’invention est de traiter les vibrations dont la fréquence est supérieure à 200Hz, par exemple entre 200 et 6000 Hz, en particulier entre 1000 et 4000 Hz.The objective of the invention is to process vibrations whose frequency is greater than 200 Hz, for example between 200 and 6000 Hz, in particular between 1000 and 4000 Hz.
Selon un premier aspect, l’invention porte sur une enveloppe nervurée pour un groupe motopropulseur électrique, ladite enveloppe nervurée comprenant une paroi et une pluralité de premières nervures parallèles, chaque première nervure étant espacée d’une première nervure voisine d’une distance d1 comprise entre 1 cm et 3,3 cm.According to a first aspect, the invention relates to a ribbed casing for an electric powertrain, said ribbed casing comprising a wall and a plurality of first parallel ribs, each first rib being spaced from a neighboring first rib by a distance d1 included between 1 cm and 3.3 cm.
L’enveloppe nervurée peut comporter une ou plusieurs des caractéristiques suivantes :
- L’enveloppe nervurée comprend au moins trois premières nervures et la distance d1 est sensiblement identique pour chaque paire de premières nervures voisines.
- L’enveloppe nervurée comprend une pluralité de deuxièmes nervures parallèles, chaque deuxième nervure étant espacée d’une deuxième nervure voisine d’une distance d2 comprise entre 1 cm et 3,3 cm.
- L’enveloppe nervurée comprend au moins trois deuxièmes nervures et la distance d2 est sensiblement identique pour chaque paire de deuxièmes nervures voisines.
- Les premières nervures sont perpendiculaires aux deuxièmes nervures.
- Notamment, d1 est compris entre 0,9*d2 et 1,1*d2.
- De préférence, la distance d1 entre les premières nervures est sensiblement égale à la distance d2 entre les deuxièmes nervures.
- Les premières et deuxièmes nervures forment des carrés.
- Les premières nervures et, le cas échéant, les deuxièmes nervures se développent sur chaque face de la paroi de l’enveloppe nervurée.
- Les premières nervures, et le cas échéant les deuxièmes nervures, de l’une des faces de la paroi, sont disposées respectivement, dans la direction de l’épaisseur de la paroi, dans le prolongement des premières nervures, et le cas échéant des deuxièmes nervures, de l’autre des faces de la paroi.
- L’enveloppe nervurée a une structure gaufrée.
- L’enveloppe nervurée a une épaisseur h de paroi entre deux premières nervures voisines et une épaisseur H1 dans les premières nervures, h et H1 étant tels que H1 est supérieur ou égal à 2h.
- L’enveloppe nervurée a une épaisseur de paroi h entre deux deuxièmes nervures voisines et une épaisseur H2 dans les deuxièmes nervures, h et H2 étant tels que H2 est supérieur ou égal à 2h.The ribbed wrap may have one or more of the following features:
- The ribbed casing comprises at least three first ribs and the distance d1 is substantially identical for each pair of neighboring first ribs.
- The ribbed envelope comprises a plurality of second parallel ribs, each second rib being spaced from a second neighboring rib by a distance d2 of between 1 cm and 3.3 cm.
- The ribbed envelope comprises at least three second ribs and the distance d2 is substantially identical for each pair of adjacent second ribs.
- The first ribs are perpendicular to the second ribs.
- In particular, d1 is between 0.9*d2 and 1.1*d2.
- Preferably, the distance d1 between the first ribs is substantially equal to the distance d2 between the second ribs.
- The first and second ribs form squares.
- The first ribs and, where applicable, the second ribs develop on each face of the wall of the ribbed casing.
- The first ribs, and where appropriate the second ribs, of one of the faces of the wall, are arranged respectively, in the direction of the thickness of the wall, in the extension of the first ribs, and where appropriate second ribs, on the other side of the wall.
- The ribbed casing has a waffle structure.
- The ribbed casing has a wall thickness h between two neighboring first ribs and a thickness H1 in the first ribs, h and H1 being such that H1 is greater than or equal to 2h.
- The ribbed casing has a wall thickness h between two adjacent second ribs and a thickness H2 in the second ribs, h and H2 being such that H2 is greater than or equal to 2h.
Selon un deuxième aspect, l’invention porte aussi sur un groupe motopropulseur comprenant une machine électrique, un mécanisme de transmission apte à transmettre un couple entre la machine électrique et des roues de véhicule, et une enveloppe nervurée telle que décrite précédemment.According to a second aspect, the invention also relates to a powertrain comprising an electric machine, a transmission mechanism able to transmit a torque between the electric machine and vehicle wheels, and a ribbed casing as described above.
L’enveloppe nervurée peut être par exemple un couvercle nervuré rapporté disposé sur un onduleur du groupe motopropulseur. Ainsi, lorsque l’onduleur est monté sur la machine électrique, le couvercle nervuré permet d’absorber les vibrations de la machine électrique.The ribbed casing may for example be an attached ribbed cover placed on an inverter of the powertrain. Thus, when the inverter is mounted on the electric machine, the ribbed cover can absorb the vibrations of the electric machine.
L’enveloppe peut être aussi un carter de machine électrique ou un carter de réducteur.The casing can also be an electrical machine casing or a reduction gear casing.
Par exemple, l’enveloppe nervurée représente plus de 50% de la surface du carter, par exemple plus de 75%.For example, the ribbed envelope represents more than 50% of the surface of the housing, for example more than 75%.
Selon un troisième aspect, l’invention porte aussi sur un procédé de dimensionnement d’une enveloppe nervurée pour un groupe motopropulseur, le procédé de dimensionnement de l’enveloppe nervurée comprenant les étapes suivantes :
- définir une fréquence maximale de vibration Fmax à traiter,
- déterminer une longueur d’onde dans l’air λ associée à la fréquence maximale de vibration à traiter,
- déterminer une distance d entre deux nervures voisines de l’enveloppe nervurée en fonction de la longueur d’onde dans l’air associée à la fréquence maximale de vibration à traiter.According to a third aspect, the invention also relates to a method for dimensioning a ribbed envelope for a powertrain, the method for dimensioning the ribbed envelope comprising the following steps:
- define a maximum frequency of vibration Fmax to process,
- determine a wavelength in the air λ associated with the maximum vibration frequency to be processed,
- determining a distance d between two neighboring ribs of the ribbed casing as a function of the wavelength in the air associated with the maximum frequency of vibration to be processed.
Le procédé peut comporter aussi une ou plusieurs des caractéristiques suivantes :
- L’étape de détermination de la longueur d’onde dans l’air λ associée à la fréquence maximale de vibration à traiter est telle que λ=c/Fmax, c correspondant à la célérité dans l’air.
- L’étape de - détermination de la distance d entre deux nervures voisines de l’enveloppe nervurée est telle que d est compris entre 0,2 λ et 0,3 λ, de préférence d= λ/4.
- Préalablement à l’étape visant à définir la fréquence maximale à traiter, est définit un ratio de quantité d’énergie acoustique à traiter, une plage de fréquence à traiter étant associée à un ratio de quantité d’énergie acoustique à traiter pour un régime de rotation donné du moteur, et la fréquence maximale à traiter correspond à la valeur maximale de la plage de fréquence à traiter.
- La plage de fréquence à traiter est déterminée à partir d’une analyse temps/fréquence de la pression acoustique au carré. Cette analyse peut être faite par calcul ou par mesure microphonique.
- L’analyse temps/fréquence de la pression acoustique au carré permet d’associer, pour un régime de rotation donné, une plage de fréquence à traiter à partir d’un ratio de quantité d’énergie acoustique à traiter.
- La valeur de la fréquence maximale à traiter est comprise entre 3000Hz et 6200Hz, notamment entre 3000Hz et 4000Hz.The method may also include one or more of the following characteristics:
- The step of determining the wavelength in the air λ associated with the maximum vibration frequency to be processed is such that λ=c/Fmax, c corresponding to the speed in the air.
- The step of - determining the distance d between two neighboring ribs of the ribbed casing is such that d is between 0.2 λ and 0.3 λ, preferably d=λ/4.
- Prior to the step aimed at defining the maximum frequency to be processed, a ratio of the quantity of acoustic energy to be processed is defined, a frequency range to be processed being associated with a ratio of the quantity of acoustic energy to be processed for a regime given rotation of the motor, and the maximum frequency to be processed corresponds to the maximum value of the frequency range to be processed.
- The frequency range to be treated is determined from a time/frequency analysis of the squared sound pressure. This analysis can be done by calculation or by microphone measurement.
- The time/frequency analysis of the squared acoustic pressure makes it possible to associate, for a given rotational speed, a range of frequencies to be processed from a ratio of the quantity of acoustic energy to be processed.
- The value of the maximum frequency to be processed is between 3000Hz and 6200Hz, in particular between 3000Hz and 4000Hz.
Brève description des figuresBrief description of figures
L’invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description suivante de plusieurs modes de réalisation particuliers de l’invention, donnés uniquement à titre illustratif et non limitatif, en référence aux dessins annexés.The invention will be better understood, and other aims, details, characteristics and advantages thereof will appear more clearly during the following description of several particular embodiments of the invention, given solely by way of illustration and not limitation. , with reference to the accompanying drawings.
Claims (17)
- définir une fréquence maximale de vibration Fmax à traiter,
- déterminer une longueur d’onde dans l’air λ associée à la fréquence maximale (Fmax) de vibration à traiter,
- déterminer une distance d entre deux nervures voisines de l’enveloppe nervurée en fonction de la longueur d’onde dans l’air associée à la fréquence maximale (Fmax) de vibration à traiter.Method for dimensioning a ribbed envelope (1) for a powertrain according to one of the preceding claims, the method for dimensioning the ribbed envelope (1) comprising the following steps:
- define a maximum frequency of vibration Fmax to process,
- determine a wavelength in the air λ associated with the maximum frequency (Fmax) of vibration to be processed,
- determining a distance d between two neighboring ribs of the ribbed casing as a function of the wavelength in the air associated with the maximum frequency (Fmax) of vibration to be processed.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2103414A FR3121395B1 (en) | 2021-04-01 | 2021-04-01 | Ribbed casing for a powertrain, powertrain comprising a ribbed casing and method for sizing a ribbed casing. |
| PCT/EP2022/058464 WO2022207734A1 (en) | 2021-04-01 | 2022-03-30 | Ribbed housing for a drive train, drive train comprising a ribbed housing, and method for dimensioning a ribbed housing |
| CN202290000425.0U CN221113491U (en) | 2021-04-01 | 2022-03-30 | Ribbed housing for an electric drive train and drive train |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2103414 | 2021-04-01 | ||
| FR2103414A FR3121395B1 (en) | 2021-04-01 | 2021-04-01 | Ribbed casing for a powertrain, powertrain comprising a ribbed casing and method for sizing a ribbed casing. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3121395A1 true FR3121395A1 (en) | 2022-10-07 |
| FR3121395B1 FR3121395B1 (en) | 2023-09-15 |
Family
ID=77226849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2103414A Active FR3121395B1 (en) | 2021-04-01 | 2021-04-01 | Ribbed casing for a powertrain, powertrain comprising a ribbed casing and method for sizing a ribbed casing. |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN221113491U (en) |
| FR (1) | FR3121395B1 (en) |
| WO (1) | WO2022207734A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3144448A1 (en) * | 2022-12-21 | 2024-06-28 | Valeo Eautomotive France Sas | Electric drive box |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000591A1 (en) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | driving means |
| EP2557667A1 (en) * | 2010-04-06 | 2013-02-13 | Toshiba Industrial Products Manufacturing Corporation | Rotating electrical machine |
| WO2018028912A1 (en) * | 2016-08-10 | 2018-02-15 | Magna powertrain gmbh & co kg | Electrical machine |
| KR20180034997A (en) * | 2016-09-28 | 2018-04-05 | 엘지이노텍 주식회사 | Motor |
| CN110336404A (en) * | 2019-06-26 | 2019-10-15 | 苏州汇川技术有限公司 | Driving motor and new-energy automobile |
| DE102020108200A1 (en) * | 2019-03-28 | 2020-10-01 | Kabushiki Kaisha Toyota Jidoshokki | MOTOR DRIVEN COMPRESSOR |
| US20200313506A1 (en) * | 2019-03-29 | 2020-10-01 | Nidec Corporation | Motor and drive apparatus |
| EP3750729A1 (en) * | 2018-02-12 | 2020-12-16 | BYD Company Limited | Power assembly and vehicle provided with same |
| JP2021016257A (en) * | 2019-07-12 | 2021-02-12 | 日本電産株式会社 | Motor unit |
-
2021
- 2021-04-01 FR FR2103414A patent/FR3121395B1/en active Active
-
2022
- 2022-03-30 CN CN202290000425.0U patent/CN221113491U/en active Active
- 2022-03-30 WO PCT/EP2022/058464 patent/WO2022207734A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000591A1 (en) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | driving means |
| EP2557667A1 (en) * | 2010-04-06 | 2013-02-13 | Toshiba Industrial Products Manufacturing Corporation | Rotating electrical machine |
| WO2018028912A1 (en) * | 2016-08-10 | 2018-02-15 | Magna powertrain gmbh & co kg | Electrical machine |
| KR20180034997A (en) * | 2016-09-28 | 2018-04-05 | 엘지이노텍 주식회사 | Motor |
| EP3750729A1 (en) * | 2018-02-12 | 2020-12-16 | BYD Company Limited | Power assembly and vehicle provided with same |
| DE102020108200A1 (en) * | 2019-03-28 | 2020-10-01 | Kabushiki Kaisha Toyota Jidoshokki | MOTOR DRIVEN COMPRESSOR |
| US20200313506A1 (en) * | 2019-03-29 | 2020-10-01 | Nidec Corporation | Motor and drive apparatus |
| CN110336404A (en) * | 2019-06-26 | 2019-10-15 | 苏州汇川技术有限公司 | Driving motor and new-energy automobile |
| JP2021016257A (en) * | 2019-07-12 | 2021-02-12 | 日本電産株式会社 | Motor unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3144448A1 (en) * | 2022-12-21 | 2024-06-28 | Valeo Eautomotive France Sas | Electric drive box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN221113491U (en) | 2024-06-11 |
| FR3121395B1 (en) | 2023-09-15 |
| WO2022207734A1 (en) | 2022-10-06 |
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