EP2807661A1 - Structure de composant electromagnetique a encombrement limite et composant electromagnetique pour notamment bobines de moteurs thermiques - Google Patents
Structure de composant electromagnetique a encombrement limite et composant electromagnetique pour notamment bobines de moteurs thermiquesInfo
- Publication number
- EP2807661A1 EP2807661A1 EP13704205.7A EP13704205A EP2807661A1 EP 2807661 A1 EP2807661 A1 EP 2807661A1 EP 13704205 A EP13704205 A EP 13704205A EP 2807661 A1 EP2807661 A1 EP 2807661A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnetic component
- winding
- electromagnetic
- component according
- magnetic core
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/12—Ignition, e.g. for IC engines
Definitions
- the present invention relates to the technical field of electromagnetic components in the general sense and more specifically to the electromagnetic components used in the field of motor vehicles.
- the object of the invention finds a particularly advantageous application in the field of producing ignition coils for combustion engines internal combustion.
- the object of the invention also finds particularly advantageous applications for electromagnetic sensors or for electromagnetic actuators for controlling a movable member for a heat engine and in particular for an injector of a heat engine.
- patent FR 2 661 216 discloses an ignition coil comprising a magnetic circuit provided on the one hand, a magnetic core around which are wound a primary winding and a secondary winding and on the other hand, a loop of closure of the magnetic circuit comprising a main branch extended on either side by return branches.
- European Patent Application No. 0 375 502 discloses an ignition coil comprising a perforated coil carcass internally defining a housing of a magnetic core and externally, a tubular winding casing for a primary winding.
- the electronic component structure comprises at least a first winding carcass internally delimiting a housing of a magnetic core and externally, a tubular winding envelope of at least one winding of an electrical conductor wire.
- the magnetic core has a transverse cross section with four branches defining two by two, four housings and in that the winding carcass comprises four longitudinal members extending in the housing parallel to each other by delimiting the tubular winding casing, the beams being connected together at each of their ends by two connecting frames.
- the electronic component structure according to the invention may additionally have in combination at least one and / or the following additional characteristics:
- the longitudinal members each have a rounded surface delimiting the tubular winding casing
- each rounded surface of a spar is connected to two lateral faces perpendicular to one another, the rounded surfaces of the longitudinal members define the tubular winding casing which projects from the magnetic core,
- the magnetic core consists of magnetic sheets stacked parallel to each other and distributed in a first series having a determined profile and in a second series having a cutting profile inscribed in the cutting profile of the first series, the magnetic sheets of the second series being disposed on both sides of the magnetic sheets of the first series,
- At least one connecting frame comprises a system for mechanically holding the ends of the electrical conductor wire of the winding
- At least one connecting frame is provided with an electrical connection system for the winding conductor wire,
- At least one connecting frame is equipped with a device for locating and holding a magnet or an air gap
- the connecting frames comprise a positioning system for a second winding carcass inside which is fitted the first winding carcass.
- Another object of the invention is to provide an electromagnetic component forming an ignition module, comprising an electromagnetic component structure according to the invention.
- Another object of the invention is to provide an ignition coil for an internal combustion engine comprising an ignition module.
- Another object of the invention is to provide an electromagnetic actuator for controlling a movable member for a heat engine, comprising an electromagnetic component structure according to the invention.
- Another object of the invention is to propose an electromagnetic component forming an electromagnetic control actuator a shutter for an engine injector, comprising an electromagnetic component structure according to the invention.
- Another object of the invention is to propose an electromagnetic component forming an electromagnetic measurement sensor, comprising an electromagnetic component structure according to the invention.
- Figures 1 and 2 are perspective views three quarter front and three quarter back of an embodiment of an electromagnetic component structure according to the invention.
- Figures 3 and 4 are perspective views of a winding carcass forming part of the electromagnetic component structure shown in Figs. 1 and 2.
- Figure 5 is a view of the electromagnetic component structure illustrated in Figs. 1 and 2 and provided with a winding of electrical conductor wire.
- Figure 6 is a perspective view illustrating an exemplary embodiment of an electromagnetic component forming an ignition module.
- Figure 7 is a view illustrating an ignition coil for an engine equipped with an ignition module according to the invention.
- Figs. 1 to 5 illustrate an exemplary embodiment of a structure 1 for an electromagnetic component comprising at least a first winding carcass 2 for an electrical conductor wire 3.
- the winding carcass 2 internally defines a housing 4 for a magnetic core 5 and externally , a tubular winding envelope E for at least one winding of an electrical conductor wire 3.
- the magnetic core 5 is in the form of a parallelepipedal body having a cross-sectional cross section with four branches to namely two opposite vertical branches 8 1 , 8 2 and two opposite horizontal branches 8 3 / 84.
- the four branches 8 1 to 84 delimit two by two, four housings 11.
- the magnetic core 5 is constituted by magnetic sheets stacked parallel to each other and cut so that in the assembled position, they together form the magnetic core 5 in the form of a cross.
- the magnetic core 5 comprises a first series of magnetic sheets 5i having a determined profile and a second series of magnetic sheets 5 2 having a cutting profile forming part of the cutting profile of the magnetic sheets 5i of the first series.
- the magnetic sheets 52 of the second series which all have the same profile are disposed on both sides of the magnetic sheets 5i of the first series also.
- the laminations 5 2 of the second series have a width which is less than the width of the laminations 5i of the first series.
- the laminations 5 2 of the second group are centered with respect to 5i laminations of the first series so as to delimit the housings 11 of the same volume.
- the ends of the magnetic sheets 5i protruding from the magnetic sheets 5 ⁇ of the second series constitute the horizontal branches 8 3 , 8 4 while the opposite vertical branches 8 1 , 8 2 are constituted by the magnetic sheets 5 2 of the second series.
- the winding casing 2 comprises four longitudinal members 13 defining together the tubular casing E of which only one section is shown diagrammatically in FIG. 3. More precisely, the longitudinal members 13 each have a rounded surface 14 on which the electric conductor wire 3 is wound. The rounded surfaces 14 of the longitudinal members 13 delimit the tubular winding envelope E extending over the entire length of the longitudinal members 13. For example, each rounded surface 14 has a shape comparable to a quarter circle.
- the four spars 13 extend parallel to each other by defining between them a parallelepiped whose interior corresponding to the housing 4 for the magnetic core 5. According to one characteristic embodiment, each spar 13 extends into a housing 11. In in other words, the longitudinal members 13 are located at the four corners of the magnetic core 5.
- the rounded surfaces 14 of the longitudinal members 13 are positioned in such a way that the tubular winding envelope E defined by these surfaces extends in projection relative to the magnetic core 5.
- the The tubular winding envelope E is spaced apart from the outer surface of the magnetic core 5 by a gap or a determined interval so that the winding of the electrical conductor wire 3 does not touch the magnetic core 5. It should be understood that most of the the thickness of the longitudinal members 13 is positioned inside the housings 11 to limit the bulk of the structure.
- the longitudinal members 13 are connected together at one of their ends by means of a first connecting frame 15 and at the other of their ends, by means of a second connecting frame 16.
- the longitudinal members 13 have a length less than the length of the magnetic core 5 so that the connecting frames 15, 16 surround the magnetic core 5 near each of its ends.
- the connecting frames 15, 16 thus serve to hold the magnetic sheets 5i, 5 2 which are engaged inside the connecting frames 15, 16.
- the magnetic sheets 5 2 of the second series are positioned between the two lower longitudinal members and between the two upper longitudinal members, in consideration of the position of the winding carcass 2 illustrated in the drawings.
- the magnetic sheets 5i of the first series are positioned between the upper rails and the lower rails.
- each spar 13 is provided with two lateral faces 18 perpendicular to each other.
- a side surface 18 extends on either side of a rounded surface 14 of a spar 13.
- the two lateral faces 18 ensure the positioning and maintenance of the magnetic core 5 and in particular, the magnetic sheets 5i, 5 2 .
- the two lateral faces 18 may be contiguous. However, preferably, the two lateral faces 18 are interconnected by an oblique connecting surface 19 making it possible to truncate the angle between the two lateral faces 18.
- At least one connecting frame namely the connecting frame 15 in the illustrated example, comprises a mechanical holding system 21 of the ends of the electrical conductor wire 3 of the winding.
- the mechanical winding system 21 which protrudes from the connecting frame 15 can be made in any suitable manner.
- the mechanical holding system 21 may include retaining pins for the electrical conductor wire 3.
- at least one connecting frame, namely, the connecting frame 15 is provided with a system electrical connection 22 for the conductive wire 3 of the winding.
- the electrical connection system 22 is for example made by a connector carried by the connecting frame 15.
- At least the second connecting frame 16 is equipped with a device 24 for locating and holding a magnet or air gap 25. illustrated example, by lugs 25 extending axially from the connecting frame 16, opposite the housing 4.
- the connecting frames 15, 16 comprise a positioning system 26 for a second winding carcass 27 within which the first winding carcass 2 is fitted.
- the system positioning device 26 is constituted by pins arranged on the connecting frames 15 and 16 to constitute a receiving surface of a second winding carcass 27 on which can be wound an electrical conductor wire to constitute a second winding of a conductive wire electric.
- the first winding carcass 2 provided with the electrical conductor wire 3 is fitted inside the second winding carcass 27. It is thus possible to produce an electromagnetic component structure comprising two concentric windings.
- the bulk of the structure 1 of the electromagnetic component is optimized by the embodiment of a winding carcass 2 limited to the longitudinal members 13, part of which extends inside the magnetic core 5.
- the winding of the electrical conductor wire 3 is provided in good conditions by its winding on the rounded surfaces 14 of the side members 13.
- Such a structure has an improved compactness compared to the structures of the state of the art.
- FIG. 7 illustrates an example of integration of the structure 1 in an electromagnetic component such as a coil 30 of the type top plug.
- this coil comprises a housing 31 for receiving the structure 1 provided with a winding structure 2 for an excitation winding of an electrical conducting wire and a second winding housing 27 for an excitation winding. an electrical conductor wire.
- the magnetic core 5 of this structure and the two excitation windings wound on the carcasses 2, 27 are part of a magnetic circuit which can be completed by a closure branch including or not, a magnet.
- the housing 31 for receiving the structure 1 is provided with fastening means 32 to the motor.
- This coil 31 also comprises connecting means 33 and connection to a spark plug.
- the structure 1 according to the invention can also be used for an electromagnetic actuator for controlling a movable member for a heat engine, such as for an engine injector.
- the structure 1 according to the invention can be used for an electromagnetic measuring sensor.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1250721A FR2986112B1 (fr) | 2012-01-25 | 2012-01-25 | Structure de composant electromagnetique a encombrement limite et composant electromagnetique pour notamment bobines de moteurs thermiques |
| PCT/FR2013/050156 WO2013110898A1 (fr) | 2012-01-25 | 2013-01-25 | Structure de composant electromagnetique a encombrement limite et composant electromagnetique pour notamment bobines de moteurs thermiques |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2807661A1 true EP2807661A1 (fr) | 2014-12-03 |
| EP2807661B1 EP2807661B1 (fr) | 2016-03-30 |
Family
ID=47714443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13704205.7A Not-in-force EP2807661B1 (fr) | 2012-01-25 | 2013-01-25 | Structure de composant electromagnetique a encombrement limite et composant electromagnetique pour notamment bobines de moteurs thermiques |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2807661B1 (fr) |
| FR (1) | FR2986112B1 (fr) |
| WO (1) | WO2013110898A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117110658A (zh) * | 2023-05-08 | 2023-11-24 | 南通众兴磁业有限公司 | 一种磁芯电性的检测设备及检测方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB640462A (en) * | 1946-06-25 | 1950-07-19 | British Thomson Houston Co Ltd | Improvements in and relating to electromagnetic induction apparatus |
| JPS5717121A (en) * | 1980-07-04 | 1982-01-28 | Matsushita Electric Works Ltd | Stabilizer for electric-discharge lamp |
| FR2641038B1 (fr) * | 1988-12-23 | 1994-02-11 | Marchal Equip Automobiles | |
| FR2661216B1 (fr) | 1990-04-23 | 1992-08-14 | Electricfil Ind Sarl | Bobine integree d'allumage individuel d'une bougie de moteur thermique a combustion interne et a allumage commande. |
| US6448878B1 (en) * | 2000-03-21 | 2002-09-10 | Hitachi Automotive Products (Usa), Inc. | Ignition coil assembly |
| US7733208B2 (en) * | 2008-04-21 | 2010-06-08 | Wolfgram Industries, Inc. | High voltage pulse type transformer with increased coupling coefficient through primary and secondary winding proximity |
| FR2933528B1 (fr) | 2008-07-07 | 2010-08-27 | Electricfil Automotive | Module d'allumage pour bobine de moteur thermique a combustion interne et allumage commande |
-
2012
- 2012-01-25 FR FR1250721A patent/FR2986112B1/fr not_active Expired - Fee Related
-
2013
- 2013-01-25 EP EP13704205.7A patent/EP2807661B1/fr not_active Not-in-force
- 2013-01-25 WO PCT/FR2013/050156 patent/WO2013110898A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013110898A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2807661B1 (fr) | 2016-03-30 |
| WO2013110898A1 (fr) | 2013-08-01 |
| FR2986112B1 (fr) | 2014-03-07 |
| FR2986112A1 (fr) | 2013-07-26 |
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