EP4453425A1 - Gehäusevorrichtung für eine fluidpumpe - Google Patents
Gehäusevorrichtung für eine fluidpumpeInfo
- Publication number
- EP4453425A1 EP4453425A1 EP22839747.7A EP22839747A EP4453425A1 EP 4453425 A1 EP4453425 A1 EP 4453425A1 EP 22839747 A EP22839747 A EP 22839747A EP 4453425 A1 EP4453425 A1 EP 4453425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- pump
- ecu
- motor
- circuit board
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/18—Lubricating
Definitions
- the present invention relates to a housing device for an electric fluid pump. It shows construction and connection concepts for such an electric fluid pump.
- control unit PCB is attached to a heat sink with good heat transfer properties, e.g. aluminum, which dissipates the heat to the surrounding air or to the oil that the pump is pumping.
- the circuit board is sealed and sealed to separate the electronics from the oil that would e.g. chemically attack and damage them.
- a housing device for an electric fluid pump according to claim 1, in which the housing device has a printed circuit board, which printed circuit board has SMT components on one side, the printed circuit board being arranged on the lower part of the housing body with a sealing adhesive, the lower part of the housing body being at least an opening is provided through which fluid or oil can pass, and wherein the housing body cover and the housing body lower part are installed fluid-tight with one another.
- the printed circuit board is attached to the lower part of the housing body and at the same time sealed against oil in the wet area. Fluid or oil can reach the underside of the printed circuit board through the at least one opening. This enables the circuit board to be cooled directly by the fluid.
- the prerequisite for cooling is the presence of the fluid in the engine compartment, which is made possible by appropriate management of the leakage volume flow of the pump.
- the housing body cover and the housing body bottom part are sealed together to protect against environmental influences.
- the aim is to seal the individual housing parts, as well as the printed circuit board seal against oil and wet areas, with the same adhesive sealant and to apply it in one process step.
- the printed circuit board has contacting elements on the side facing away from the housing body cover for making contact with contact elements emanating from the electric motor, which extend through the at least one opening therein. Since electrical contacting elements are designed as SMT contacts, they do not require a through hole on the circuit board. Since the printed circuit board is made of epoxy material and no through-holes are required, the printed circuit board can act as a separating and sealing layer against fluid/oil or the wet room.
- the printed circuit board can be connected via an electrical connecting element.
- the housing body cover is a
- ECU housing upper part and the housing body lower part an ECU housing lower part.
- An advantageous embodiment provides that the lower part of the ECU housing is arranged on the motor housing of the electric motor and forms the upper part of the housing of the motor housing.
- One possible arrangement is to mount the pump housing on the side of the engine housing facing away from the ECU housing base.
- seals are provided between the respective housing parts arranged on one another.
- a geometrically complex seal or a seal consisting of several parts can thus be dispensed with.
- the housing body cover is an ECU housing upper part and the housing body lower part is an upper housing part of the motor housing of the electric motor.
- a pump is preferably arranged in the pump housing on the side of the motor housing facing away from the ECU housing top part.
- the ECU housing body top, the motor housing and the pump housing are sealed together.
- the housing body cover can be an ECU housing upper part and the housing body lower part can be an upper housing part of a pump housing.
- an electric motor is arranged on the side of the pump housing facing away from the ECU housing top part.
- the ECU housing body upper part, the pump housing and the motor housing are connected to one another in a sealing manner. These are thus sealed against environmental influences.
- the lower part of the ECU housing, the motor housing and the pump housing are preferably screwed together.
- the housing device is particularly preferably made of plastic.
- FIG. 1 shows a sectional view of a first embodiment of the housing device according to the invention
- FIG. 2 shows a sectional view of a second embodiment of the housing device according to the invention.
- FIG. 3 shows a sectional view of a third embodiment of the housing device according to the invention.
- FIG. 1 shows an embodiment of a housing device 10 according to the invention, as is used, for example, for an electric oil pump.
- the housing device 10 comprises a pump 20, a motor 30 and an electronic control unit, ECU, 40.
- the housing device 10 further comprises a housing body cover 50 which simultaneously represents the ECU housing upper part 50 and a housing body lower part 60 which also represents the ECU housing lower part 60 .
- the upper ECU housing part 50 and the lower ECU housing part 60 are installed together by means of a seal 70 and, as the upper housing part 80 , are screwed onto a motor housing 90 of the electric motor 30 by means of a sealing element 100 .
- the electric motor 30 includes a shaft 110, a rotor 120 and a stator 130, here a brushless DC motor with the motor housing 90 and is constructed in a known manner.
- the pump 20 is arranged on the motor housing 90 of the electric motor 30 with a pump housing 150.
- the shaft 110 of the motor 30 and the pump 20 is in one piece and extends from the pump housing 150 into the Motor housing 90.
- Pump housing 150, motor housing 90 and the ECU lower housing part 60 are connected to one another by means of a screw connection 160, in each case between the pump housing 150 and the Motor housing 90 and the motor housing 90 and the ECU housing base 60 sealing means 100.0160 are provided.
- a printed circuit board 170 is also arranged inside the ECU housing 50,60, namely on the ECU housing lower part 60 by means of a sealing adhesive 180, e.g. B. epoxy adhesive glued.
- the ECU lower housing part 60 has openings 190 through which cooling media (typically the fluid delivered by the pump 20) can occur and through direct contact of the fluid, e.g. B. the oil with the circuit board 170 in the region of the openings 190 cool heat sources.
- the design of the pump 20 ensures some oil exchange of the oil contacting the hot spots (i.e., transistors, controllers, power traces) of the circuit board 170 to also transfer heat through oil movement.
- the leakage oil inside the pump is used to ensure the oil exchange in the required cooling volumes.
- the printed circuit board 170 can be electrically connected by means of a connecting pin 200 which extends through the ECU housing lower part 60 in the direction out of the housing lower part 60 into a connection area 210 .
- Circuit assemblies 220 SMT components, e.g. B. Mosfets arranged. It is also possible, although not shown, to mount the components on the side of the circuit board 170 that is bonded to the ECU case base 60 by incorporating pockets in the case to accommodate the electronic components. These circuit arrangements 220, which are designed as SMT components, do not require any through-holes on the printed circuit board 170. Since the printed circuit board 170 is made of epoxy material and no through-holes are required, it can be used as a separating or sealing plane with respect to the oil or act as a wet room.
- SMT male pins 230 are attached, which are in contact with the stator 130 of the motor 30 outgoing SMT female pins 240 for electrical contact with the motor 30.
- the SMT male pins 230 can also emanate from the stator 130 for electrical contacting with SMT-female pins 240, which are arranged on the printed circuit board 170.
- the motor phases are connected through the openings 190 formed in the ECU housing base 60.
- the motor phase contacts are typically contacts which are without special assembly force support on the printed circuit board 170 or can be connected without it at all.
- FIG. 2 shows a second embodiment of the housing device 10 according to the invention, only the extent to which the housing devices 10 differ being discussed.
- the case device 10 in this embodiment includes a case body cover 250 which is an ECU case 250 which is fully open on the side facing the motor case 90 .
- the ECU housing 250 is arranged on the adjoining motor housing 90, namely screwed, with the ECU housing 250 and the motor housing 90 being installed tightly by means of a seal 260.
- the electric motor 30 accommodated in the motor housing 90 corresponds to that from FIG. 1, to the description of which reference is made.
- the pump 20 with the pump housing 150 connects to the motor housing 90 in the same way as in the embodiment according to FIG.
- the embodiment according to FIG. 2 differs from that in FIG. 1 in that the printed circuit board 170 is also arranged inside the ECU housing 250, but is glued to the upper housing section 270 of the motor housing 90 by means of sealing adhesive 180.
- openings 280 are provided in the upper housing section 270 of the motor housing 90, through which the cooling medium can reach the rear side of the printed circuit board 170, and the necessary cooling of the same takes place through the oil exchange.
- connection pin 200 extends through the ECU housing 250 to the terminal area 210 for electrical connection.
- circuit arrangements 220 are provided on the side of the circuit board 170 facing away from the motor housing 90 . Reference is made to the description there.
- FIG. 3 shows a housing device 10 in which the arrangement of pump 20 with pump housing 150, electric motor 30 with motor housing 90 and electric control unit 40 with ECU housing 250 differs from the arrangement of the same in FIGS.
- the case device 10 of this embodiment includes the case body cover 250, which also forms the ECU case 250 here.
- the ECU case 250 is fully open on the pump case 150 side.
- Adjacent to the ECU housing 250 is the pump housing 150 with the pump 20, to which the ECU housing 250 is attached by means of a screw connection.
- the motor housing 90 with the electric motor 30 is arranged on the side facing away from the ECU housing 250 .
- the ECU case, the pump case 150 and the motor case 90 are assembled together with screws 290 .
- Seals 260, 300 are arranged between the ECU housing 250 and the pump housing 150 and the pump housing 150 and the motor housing 90 in order to seal the interior of the housing device in a fluid-tight manner and to the outside towards the wet room.
- the printed circuit board 170 is glued to the upper housing area 310 of the pump housing 150 with a sealing adhesive 160 . Openings 320 are formed in the upper housing area 310 of the pump housing 150, through which cooling medium can reach the rear side of the circuit board 170 from the interior of the pump housing 150 and the circuit board 170 is cooled by this exchange of oil. The heat of the circuit board 170 is thus dissipated close to where it is generated. As a result, very small cooling surfaces with good heat dissipation can be implemented. Due to this direct cooling of the printed circuit board 170, the housing material is no longer the primary factor in cooling the printed circuit board. Thus, cheaper materials such as plastic can be used for the housing material, and the size of the pump can be reduced.
- circuit arrangements 220 On the side of the circuit board 170 facing away from the pump housing 150, namely on the side which is not glued to the pump housing 150, circuit arrangements 220, SMT components, e.g. B. Mosfets arranged.
- SMT female pins 240 are mounted on the side of circuit board 170 facing pump housing 150, which are in contact with SMT male pins 230 for electrical contact with motor 30.
- SMT male pins 230 extend from stator 130 of the motor 30 through the pump 20 through the openings in the upper housing area 310 of the pump housing 150 and contact the SMT female pins 240 provided on the printed circuit board 170 in the area of the openings 320.
- the number of motor phase contacts is reduced due to the low insertion forces Parts and the sealing effort for the housing device. Likewise, a good assembly is given.
- Housing devices of the type described above can be used, for example, in motor vehicle hydraulic systems, electric drives for electric and hybrid vehicles, automatic transmissions, commercial vehicles, oil delivery systems, in nautical applications, battery cooling systems and lubrication systems.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021214755.0A DE102021214755A1 (de) | 2021-12-21 | 2021-12-21 | Gehäusevorrichtung für eine Fluidpumpe |
| PCT/EP2022/086427 WO2023117784A1 (de) | 2021-12-21 | 2022-12-16 | Gehäusevorrichtung für eine fluidpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4453425A1 true EP4453425A1 (de) | 2024-10-30 |
| EP4453425B1 EP4453425B1 (de) | 2026-02-11 |
Family
ID=84888863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839747.7A Active EP4453425B1 (de) | 2021-12-21 | 2022-12-16 | Gehäusevorrichtung für eine fluidpumpe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4453425B1 (de) |
| DE (1) | DE102021214755A1 (de) |
| WO (1) | WO2023117784A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023207408A1 (de) | 2023-08-02 | 2025-02-06 | Vitesco Technologies GmbH | Fluidpumpe, Kraftfahrzeug, Herstellverfahren für eine solche Fluidpumpe und Verwendung einer solchen Fluidpumpe in einem Wärmetransportmittelkreis(lauf) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10328213A1 (de) * | 2003-06-24 | 2005-01-13 | Robert Bosch Gmbh | Elektrische Pumpvorrichtung für ein Fluid, insbesondere Hochdruck-Kraftstoffpumpe für eine Brennkraftmaschine |
| US9169833B2 (en) * | 2012-10-04 | 2015-10-27 | Carter Fuel Systems, Llc | Device for fastening and electrically connecting a circuit board to a motor |
| CN104769221B (zh) * | 2012-10-29 | 2019-06-04 | 皮尔伯格泵技术有限责任公司 | 机动车电液泵 |
| JP6365209B2 (ja) | 2014-10-09 | 2018-08-01 | 株式会社デンソー | 電気装置、電気装置の製造方法、および電動圧縮機 |
| CN105932810B (zh) * | 2015-02-27 | 2019-10-22 | 博泽沃尔兹堡汽车零部件有限公司 | 电机结构组件 |
| AT518125B1 (de) | 2015-11-16 | 2020-01-15 | Melecs Ews Gmbh & Co Kg | Gehäusedeckel für eine elektrische Maschine |
| JP6387997B2 (ja) * | 2016-03-28 | 2018-09-12 | 株式会社豊田自動織機 | 流体機械 |
| US11821420B2 (en) * | 2017-06-30 | 2023-11-21 | Tesla, Inc. | Electric pump system and method |
| DE102017214859A1 (de) | 2017-08-24 | 2019-02-28 | Robert Bosch Gmbh | Kolbenpumpenaggregat für eine hydraulische Fahrzeugbremsanlage |
| DE102018104770A1 (de) * | 2018-03-02 | 2019-09-05 | Nidec Gpm Gmbh | Elektrische Kühlmittelpumpe |
| US11784591B2 (en) | 2019-10-23 | 2023-10-10 | Nidec Motor Corporation | Dual motor system with flow control |
| JP7389680B2 (ja) * | 2020-02-28 | 2023-11-30 | 株式会社ミツバ | モータ装置及び電動ポンプ |
-
2021
- 2021-12-21 DE DE102021214755.0A patent/DE102021214755A1/de active Pending
-
2022
- 2022-12-16 WO PCT/EP2022/086427 patent/WO2023117784A1/de not_active Ceased
- 2022-12-16 EP EP22839747.7A patent/EP4453425B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021214755A1 (de) | 2023-06-22 |
| WO2023117784A1 (de) | 2023-06-29 |
| EP4453425B1 (de) | 2026-02-11 |
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