EP1964142A2 - Dispositif d'alimentation electrique d'un organe electrique au moyen d'un relais electromagnetique - Google Patents
Dispositif d'alimentation electrique d'un organe electrique au moyen d'un relais electromagnetiqueInfo
- Publication number
- EP1964142A2 EP1964142A2 EP06847201A EP06847201A EP1964142A2 EP 1964142 A2 EP1964142 A2 EP 1964142A2 EP 06847201 A EP06847201 A EP 06847201A EP 06847201 A EP06847201 A EP 06847201A EP 1964142 A2 EP1964142 A2 EP 1964142A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- movable contact
- coil
- branch
- active position
- intensity
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
Definitions
- the present invention relates to a device for powering an electrical component by means of an electromagnetic relay.
- an electrical component of a motor vehicle such as, for example, a fan, a traffic light, a pump of a cooling circuit, etc.
- Means for connecting the first source to the electrical member having an electromagnetic relay provided with a control coil for the displacement of at least a first movable contact between a rest position in which the first source is isolated from the electrical member and an active position in which the first source is connected to the electrical member,
- a second power source of the coil imposing a current through the coil of sufficient intensity to move the first movable contact from its rest position to its active position.
- a power supply device of this type thus makes it possible to control the power off or in tension of the electric member as a function of the intensity of the current flowing through the coil.
- the coil In a conventional manner, the coil generates an electromagnetic force that increases as the intensity of the current flowing through the coil increases. Thus, by varying the intensity of the current flowing through the coil, it is possible to control the displacement of the first movable contact in the rest position or the active position.
- the coil is formed by a set of turns made of a conductive material. This set of turns has an electrical resistance which is at the origin of a joule effect heating of the coil when it is traversed by a current.
- This heating is all the more important as the intensity of the current flowing through the coil is large.
- the invention aims to limit reel heating.
- the subject of the invention is a device for supplying an electric member of the aforementioned type, characterized in that it comprises means for lowering the intensity of the current flowing through the coil, activated when the first moving contact is in the active position, the intensity of the lowered current remaining sufficient to maintain the first contact in the active position.
- the electromagnetic force (and therefore the intensity of the current flowing through the coil) necessary to move the first movable contact from its rest position to its active position is greater than that necessary to maintain the first moving contact. in its active position.
- the first and second sources of electrical power supply are sources of first and second voltages respectively, identical or different;
- the means for lowering the intensity of the current comprise resistive means that can be connected in series with the coil in the second circuit when the first movable contact is in the active position;
- the means for lowering the intensity of the current comprise means for activating / deactivating a branch branch of the resistive means as a function of the position of the first movable contact;
- the activation / deactivation means comprise static switching means, mounted between the first and second circuits and forming part of the branch of the resistive means with the electrical member, and capable of adopting a blocked state, wherein the branch branch is open, and an on state, wherein the branch branch is closed;
- the static switching means comprise a passing diode from the second circuit to the first circuit, so that the passing state of the diode coincides with the rest position of the first movable contact and the blocked state of the diode coincides with the active position of the first movable contact;
- the activation / deactivation means comprise mobile switching means forming part of the branch branch of the resistive means, and capable of adopting two positions, a first position in which the branch branch is closed, and a second position in which branch branch is open;
- the mobile switching means comprise the first movable contact mounted between the first and second circuits, the first and second positions being respectively the rest position and the active position of the first movable contact;
- the mobile switching means comprise a second movable contact, the displacement of the second movable contact being also controlled by the coil, the first and second positions of the second movable contact coinciding respectively with the rest position and the active position of the first movable contact.
- FIG. 1 is a diagrammatic view of a power supply device of FIG. an electrical member according to a first embodiment of the invention
- FIGS. 2 to 5 are schematic views of the device of Figure 1 in different states of operation of this device;
- FIG. 6 is a graph showing the change in the intensity of the current flowing through a coil of the device as a function of time
- FIG. 7 and 8 are schematic views of a power supply device of an electrical member according to the second and third embodiments of the invention respectively.
- the supply device 10 is intended to electrically power an electrical member 12, for example an electric member of a motor vehicle.
- the electrical member 12 is for example a fan, a traffic light or a pump of a cooling circuit of the vehicle.
- the power supply device 10 comprises a first circuit 14 comprising a first power supply source 16 of the electrical component 12.
- the first power supply source 16 is a first voltage source V 1 .
- the device 10 also comprises means for connecting the first source 16 to the electrical member 12.
- connection means comprise an electromagnetic relay 18.
- the electromagnetic relay 18 is provided with a coil 20 and at least a first movable contact 22.
- the coil 20 is intended to control the displacement of the first movable contact 22 as a function of the intensity I of the current passing through it.
- the first movable contact 22 is capable of being displaced by the coil 20 between a rest position PR, in which the first source 16 is isolated from the electrical member 12, and an active position PA, in which the first source 16 is connected to the electrical member 12.
- the power supply device 10 also comprises a second circuit 24 comprising the coil 20 and a second power supply source 26 of the coil 20.
- the second power source 26 electric is a source of second voltage V 2 .
- the first 16 and second 26 voltage sources are distinct.
- the second voltage V 2 is less than or equal to the first voltage V 1 .
- the second circuit 24 further comprises a switch 28 capable of adopting an open state, in which the second circuit 24 is open and the coil 20 is not supplied with current, and a closed state, in which the second circuit
- This switch 28 comprises for example a conventional transistor.
- the second voltage source V 2 is chosen to impose a current of intensity ID through the coil 20 sufficient to move the first movable contact 22 from its rest position PR to its active position PA during a first duration T 1 (FIG. ).
- the feed device 10 also comprises means 30 for lowering the intensity I of the current flowing through the coil 20, these lowering means 30 being activated as soon as the first movable contact 22 is in the active position PA so as to lower the intensity of the current I.
- the intensity of the minimum current ID sufficient to move the first movable contact 22 from its rest position PR to its active position PA is greater than the intensity of the minimum IM current sufficient to maintain the first movable contact 22 in its active position PA.
- the intensity of the current IM is lowered so as to remain sufficient to maintain the first movable contact 22 in the active position PA during a second duration T 2 of maintaining the first movable contact 22 in its active position PA ( Figure 6).
- the means for lowering the intensity of the current I comprise resistive means 32.
- the resistive means 32 may be connected in series with the coil 20 in the second circuit 24 when the first contact mobile 22 is in the active position PA.
- the means for lowering the intensity of the current I further comprise means for activating / deactivating a branch branch 34 of the means resistive 32 depending on the position of the first movable contact 22.
- the activation / deactivation means comprise static switching means 36 mounted between the first 14 and second 24 circuits.
- the static switching means 36 comprise a diode 36 passing from the second circuit 24 to the first circuit 14.
- the diode 36 and the electrical member 12 are part of the branch branch 34 of the resistive means 32. In known manner in itself, the diode 36 is likely to adopt a blocked state
- branch branch 34 is open and an on state P (represented by a closed switch in FIGS. 2 to 4) in which branch branch 34 is closed.
- the on state P of the diode 36 coincides with the rest position PR of the first movable contact 22 and the off state B of the diode 36 coincides with the active position PA of the first movable contact 22.
- the electrical member 12 has a relatively low resistance r, of a value of the order of, for example, 1 Ohm.
- resistive means 32 having a resistance R of a value of the order of, for example, 100 Ohm.
- the resistor R is selected resistive means 32 adapted to lower the intensity of the current ID at an intensity of IM current sufficient to maintain the first contact 22 in the active position PA.
- the device 10 is in a first state shown in Figure 2, wherein the electrical member 12 is not powered.
- the first movable contact 22 is in its rest position PR and the first source 16 is isolated from the electrical member 12.
- the switch 28 is open so that the coil 20 is not supplied with current.
- the device 10 is placed in a second state shown in FIG.
- the switch 28 is closed so that the coil 20 is supplied with current by the second power supply source 26.
- the intensity of the current flowing through the coil 20 has the value of the intensity of the displacement current. ID.
- the intensity of the current ID is sufficient to initiate the movement of the first movable contact 22 from its rest position PR to its active position PA.
- the first movable contact 22 is shown while moving in FIG. 4.
- the device 10 is in a third transient state.
- the device 10 After the duration T 1 has elapsed, the device 10 is in a fourth state shown in FIG.
- the first movable contact 22 is in the active position PA and the first source 16 is connected to the electrical member 12 and feeds it.
- the diode 36 Since the first voltage V 1 has a value greater than or equal to the second voltage V 2 , the diode 36 is subjected to a negative potential difference and is therefore in its off state B.
- bypass branch 34 is open and the resistive means 32 are connected in series with the coil 20.
- the intensity of the current I through the coil has the value IM.
- FIGS. 7 and 8 show a device 10 respectively according to second and third embodiments of the invention.
- the device 10 comprises means for activating / deactivating the branch branch 34, comprising mobile switching means 40.
- the mobile switching means 40 are capable of adopting a first position P1 in which the bypass branch 34 is closed and a second position P2 in which the branch branch 34 is open so as not to connect or connect the resistive means, respectively. 32 in series with the coil 20.
- the mobile switching means 40 comprise the first movable contact 22 mounted between the first 14 and second 24 circuits, the first P1 and second P2 positions being respectively the rest position PR and the active position PA of the first movable contact 22.
- the first 16 and second 26 voltage sources are identical (the second voltage V 2 is equal to the first voltage V 1 ).
- the electromagnetic relay is provided with a second movable contact 42 whose displacement is also controlled by the coil 20.
- the mobile switching means 40 comprise this second movable contact 42.
- the first P1 and second P2 positions of the second movable contact 42 coincide respectively with the rest position PR and the active position PA of the first movable contact 22.
- the first 16 and second 26 voltage sources may be identical or different.
- the intensity current ID passing through the coil 22 makes it possible simultaneously to control the displacement of the first movable contact 22 from its rest position PR to its active position PA and the displacement of the second movable contact 42. from the first position P1 to the second position P2 so as to open the bypass branch 34 of the resistive means 32 and thus lower the intensity of the current flowing through the coil 20 to the value IM.
Landscapes
- Relay Circuits (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0513171A FR2895561B1 (fr) | 2005-12-22 | 2005-12-22 | Dispositif d'alimentation electrique d'un organe electrique au moyen d'un relais electromagnetique |
PCT/FR2006/051411 WO2007074302A2 (fr) | 2005-12-22 | 2006-12-21 | Dispositif d'alimentation electrique d'un organe electrique au moyen d'un relais electromagnetique |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1964142A2 true EP1964142A2 (fr) | 2008-09-03 |
EP1964142B1 EP1964142B1 (fr) | 2012-05-16 |
EP1964142B8 EP1964142B8 (fr) | 2012-06-27 |
Family
ID=37008654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06847201A Active EP1964142B8 (fr) | 2005-12-22 | 2006-12-21 | Dispositif d'alimentation electrique d'un organe electrique au moyen d'un relais electromagnetique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1964142B8 (fr) |
FR (1) | FR2895561B1 (fr) |
WO (1) | WO2007074302A2 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6387872B2 (ja) * | 2015-03-16 | 2018-09-12 | 株式会社オートネットワーク技術研究所 | リレー制御装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT986144B (it) * | 1973-01-22 | 1975-01-20 | Yokowo Seisakusho Kk | Apparecchiatura di rele a corrente in particolare per antenne radio |
FR2281644A1 (fr) * | 1974-08-07 | 1976-03-05 | Fligue Wladimir | Ensemble voltmetrique a relais electromagnetique |
FR2369675A1 (fr) * | 1976-10-29 | 1978-05-26 | Jalon Jacques Andre | Anti-repetiteur a commande par impulsion |
-
2005
- 2005-12-22 FR FR0513171A patent/FR2895561B1/fr not_active Expired - Fee Related
-
2006
- 2006-12-21 EP EP06847201A patent/EP1964142B8/fr active Active
- 2006-12-21 WO PCT/FR2006/051411 patent/WO2007074302A2/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007074302A3 * |
Also Published As
Publication number | Publication date |
---|---|
FR2895561A1 (fr) | 2007-06-29 |
WO2007074302A3 (fr) | 2007-08-23 |
WO2007074302A2 (fr) | 2007-07-05 |
FR2895561B1 (fr) | 2008-03-14 |
EP1964142B1 (fr) | 2012-05-16 |
EP1964142B8 (fr) | 2012-06-27 |
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