CN104603888A - Electrical circuit for the excitation of at least one electromagnet - Google Patents

Electrical circuit for the excitation of at least one electromagnet Download PDF

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Publication number
CN104603888A
CN104603888A CN201380045821.0A CN201380045821A CN104603888A CN 104603888 A CN104603888 A CN 104603888A CN 201380045821 A CN201380045821 A CN 201380045821A CN 104603888 A CN104603888 A CN 104603888A
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CN
China
Prior art keywords
inductance
energy storage
storage unit
terminal
converting system
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Pending
Application number
CN201380045821.0A
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Chinese (zh)
Inventor
D.杜普伊斯
S.布鲁切特
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Valeo Systemes de Controle Moteur SAS
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Valeo Systemes de Controle Moteur SAS
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Publication of CN104603888A publication Critical patent/CN104603888A/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Particle Accelerators (AREA)

Abstract

Electrical circuit (1) for the excitation of at least one electromagnet (4), comprising: an inductor (4) forming the electro magnet, said inductor (4) extending between a first terminal (6) and a second terminal (7), - a first electrical energy storage unit (2), a second electrical energy storage unit (3), and a switching system (5) interposed between the inductor (4) and the electrical energy storage units (2, 3), the switching system (5) being configured so as to: allow positive electrical current (i1) issuing from the first electrical energy storage unit (2) to flow from the second (7) to the first (6) terminal of the inductor (4), in such a way as to perform a first charging of the inductor (4), allow positive electrical current (i1) flowing from the second (7) to the first (6) terminal of the inductor (4) to flow in the second electrical energy storage unit (3) and allow positive electrical current (i2) issuing from the second electrical energy storage unit (3) to flow from the first (6) to the second (7) terminal of the inductor (4), in such a way as to perform a second charging of the inductor (4).

Description

For encouraging the circuit of at least one electromagnet
Technical field
The present invention relates to the circuit for encouraging at least one electromagnet.
Background technology
Excitation electric magnet thus produce magnetic field, and magnetic field may be used for the solid element of mobile ferromagnetic material.When circuit is integrated in the hydrocarbon fuel nozzle of automobile, the solid element such as needle-valve of ferromagnetic material allows hydrocarbon fuel to enter between the position of the combustion chamber of vehicle Thermal Motor and the position wherein stoping hydrocarbon fuel to enter wherein to move in nozzle, and the movement of this element performs under the magnetic fields produced by electromagnet.
In addition, other application are also possible.When using in the vehicle comprising Thermal Motor, the present invention such as may be used for:
-Controlling solenoid valve, such as gasoline respiratory box exhaust solenoid valve,
The DC motor of-control the exhaust of Thermal Motor or the electric actuator in air inlet loop, such as, control the actuation motor of the every other valve of EGR valve door or air inlet or exhaust,
The motor of the supercharging electric compressor of-control vehicle Thermal Motor.
Be well known that, in this application for injecting hydrocarbon fuel, promote voltage available by means of overvoltage stage of development, the terminal of inductance forming electromagnet can produce very high voltage, and this voltage is also referred to as " amplification voltage ".This stage of development comprises known inductance, capacitor and diode, and inductance is charged by voltage available, and transfer results from the energy of this charging in capacitor, thus discharge supply is to overvoltage.
In order to reduce the volume relevant with using overvoltage stage of development and cost, be realised that the inductance forming electromagnet when producing overvoltage by patent US 5 717562 and US 5 936 827.For this purpose, use enough weak electric current to start charging to this inductance with voltage available, thus can not produce and likely move needle-valve and the magnetic field of therefore opening nozzle.Then, the energy put aside in inductance is transferred to capacitor, thus causes the overvoltage electric discharge subsequently that is applied on inductance terminal, and it is with by enough producing mobile needle-valve and the electric current opening the magnetic field of nozzle terminates.
This method is compulsory, and keep faint in order to capacitor charging subsequently thus avoid the injection of undesirable hydrocarbon fuel, it forces the electric current guaranteeing to circulate in inductance.
Also can be known by patent application FR 2 772 972, the control device of electromagnet allows electric current to circulate with identical direction from two different power storage sources in electromagnet.
Exist desirable to provide easy to use, efficiency is high, the cheap and demand of the circuit for excitation electric magnet that volume is little.
Summary of the invention
The present invention is intended to respond and realizes this object, according to it on the one hand, by the circuit for encouraging at least one electromagnet, comprising:
The inductance of-formation electromagnet, described inductance extends between the first terminal and the second terminal,
-the first energy storage unit,
-the second energy storage unit, and
-converting system, be plugged between inductance and these energy storage units, this converting system is configured to:
-allow the positive current from the first energy storage unit to be circulated to the first terminal by the second terminal of inductance, thus perform the initial charge of inductance,
-allow the positive current circulated to the first terminal by the second terminal of inductance to circulate in the second energy storage unit, and
-allow the positive current from the second energy storage unit to be circulated to the second terminal by the first terminal of inductance, thus perform the charging again of inductance.
According to the present invention, when forming the initial charge of inductance of electromagnet, inductance is by charge in the mode that the mode of again charging between charge period is contrary with it.
Therefore, the initial charge of inductance produces the magnetic field different in the magnetic field again produced between charge period from it.For this reason, the effect realizing obtaining during the initial charge that again there is no at inductance between charge period of inductance is guaranteed.
When the application of the needle-valve in order to mobile hydrocarbon fuel nozzle, again between charge period, do not producing the movement of needle-valve.Needle-valve only leans on stayed surface on the position of such as giving tacit consent to, and the magnetic field responded to by inductance during initial charge applies power to needle-valve on its stayed surface direction.Therefore initial charge can not change the configuration of nozzle and remain closed.Again between charge period, the magnetic field responded in inductance can apply contrary to leave surface-supported power to needle-valve, therefore opens hydrocarbon fuel passage, drives the unlatching of nozzle.
Forming the inductance of electromagnet is that such as solenoid, particularly inductance value are between 1mH to 10mH.
Converting system comprises H bridge.This H bridge allows the direction reversion of positive current in the inductance forming electromagnet.
This H bridge is included in two arms extended between input terminal and lead-out terminal, and each arm comprises two switches, and the central point between them is connected to each terminal of inductance.
Each arm comprises two controlled bidirectional switchs or two controlled single-way switch.Each switch comprises such as IGBT type, ambipolar or FET.
Each terminal of inductance can be directly connected in the central point of arm.In modified model, at least one intermediary element, such as resistance, be plugged between the terminal of inductance and the central point of arm.
This converting system comprises at least one first switch, between the input terminal being arranged on the first energy storage unit and H bridge.This first switch is such as unidirectional and is controlled or uncontrollable.
This converting system comprises at least one second switch, between the input terminal being arranged on the second energy storage unit and H bridge.
This second switch is such as two-way and is controlled or uncontrollable.
When being particularly applied to the hydrocarbon fuel nozzle use of vehicle, this first energy storage unit is battery.In this case, this second energy storage unit is capacitor.Capacitor has such as μ P order of magnitude capacitance.Again the charging by forming the capacitor discharge of the second energy storage unit and realize of this inductance.
At the voltage of initial charge during 12V or 14V, energy storage unit can put on the terminal of inductance, the vehicle-mounted supplying cell that this first energy storage unit particularly uses in automobile.
At the voltage again charged at 50V to 100V, particularly during 80V, this second energy storage unit can put on the terminal of inductance.
According to it on the other hand, the present invention is also in order to such object, by the method for at least one electromagnet of circuit activation, this circuit comprises the described electromagnet, the first energy storage unit, the second energy storage unit and the converting system that is arranged between energy storage unit and inductance that are formed by the inductance extended between the first terminal and the second terminal, wherein the method:
-control this converting system, so that the positive current provided by the first energy storage unit is circulated to the first terminal by the second terminal of inductance, thus perform the initial charge of described inductance,
-control this converting system, so that the second terminal by inductance is supplied the second energy storage unit to the positive current that the first terminal circulates, thus energy trasfer will be put aside in inductance, and
-control this converting system, so that the positive current provided by the second energy storage unit is circulated to the second terminal by the first terminal of inductance, thus perform the charging again of inductance.
As mentioned above, the initial charge of inductance allows the charging subsequently of the second energy storage unit, so as subsequently its again between charge period by the energy trasfer put aside in the second energy storage unit in inductance.In order to the charging subsequently of the second energy storage unit and during using the inductance of being powered by the second energy storage unit, said method, allows not respond to identical magnetic field at inductance by the first energy storage unit period of powering.Therefore, powered period by the second energy storage unit at inductance, when the magnetic field of induction is used for moving meter, such as needle-valve, the inductance of being powered by the first energy storage unit allows the charging subsequently of the second energy storage unit and can not move this element.
The voltage being applied to inductance by the first energy storage unit during the initial charge of inductance is less than at the voltage, particularly 12V or 14V that are again applied to inductance between charge period by the second energy storage unit of inductance and 80V.
The part or all of feature of above-mentioned application motivational techniques, particularly use battery as the first energy storage unit and capacitor as the second energy storage unit time, the charging again of inductance realizes the electric discharge of capacitor in this case.
Accompanying drawing explanation
By the reading of the detailed description to ensuing non-limiting embodiment and the research to appended accompanying drawing, the present invention will be understood better, wherein:
Fig. 1 represents the circuit diagram according to the embodiment of the present invention, and
Fig. 2 to 4 represents the circuit diagram of Fig. 1 when the different phase in order to excitation electric magnet.
Embodiment
Present description relates to for being activated in automobile to inject the embodiment of the circuit 1 of the electromagnet of hydrocarbon fuel.But this embodiment is not restrictive, as following further explanation.
Circuit 1 is vehicle-mounted on vehicle and excitation electric magnet, allows to produce can move needle-valve to control the magnetic field of the injection of the hydrocarbon fuel in the combustion chamber of the Thermal Motor of vehicle.But, the invention is not restricted to this application.As shown in Figure 1, circuit 1 comprises the first energy storage unit 2, second energy storage unit 3, the inductance 4 forming electromagnet and converting system 5.In an embodiment, the first energy storage unit 2 can be vehicle-mounted supplying cell, simultaneously power capacitor during the second energy storage unit.
In this embodiment, inductance 4 is the solenoids with the first terminal 6 and the second terminal 7.
As shown in Figure 1, converting system 5 comprises the H bridge formed by two arms 8, and in the embodiment shown, this arm 8 extends between input terminal 9 lead-out terminal 10 of bridge H, and lead-out terminal 10 is this ground connection.
In the embodiment shown, each arm 8 comprises two electronic switches 11 and current measuring device 12.Each electronic switch is such as transistor, comprises field-effect transistor or IGBT transistor npn npn.
Central point 13 is there is between these two electronic switches 11.The central point 13 of arm 8, hereinafter referred to as " the first arm ", is connected with the first terminal 6 of solenoid 4, and other central points of arm 8, hereinafter referred to as " the second arm ", are connected with the second terminal 7 of solenoid 4 simultaneously.
In order to describe clear for the purpose of, electronic switch 11 usage flag S1 in the embodiment of Fig. 1, S2, S3 and S4 represent, S1 corresponds to the electronic switch 10 above the first arm 8, S2 corresponds to the electronic switch 10 below the first arm 8, S3 corresponds to the electronic switch 10 above the second arm 8, and S4 corresponds to the electronic switch 10 below the second arm 8.
As shown in Figure 1, in the embodiment shown, converting system 5 also comprises the first switch 15 be plugged between the input terminal 9 of H bridge and the positive terminal of the first energy storage unit 2, and is plugged in the second switch 16 between the input terminal 9 of H bridge and the positive terminal of the second energy storage unit 3.
In the embodiment shown, the first switch 15 is uncontrollable.In this embodiment, it is equal to unidirectional, is equivalent to diode.In this embodiment, second switch is controlled.It can be two-way, particularly triode.With reference now to accompanying drawing 2 to 4 be described in want mobile injector valve for hydrocarbon fuel being injected the combustion chamber of Thermal Motor time, control the embodiment of converting system 5.
As shown in Figure 2, first converting system 5 is controlled, so that charge to solenoid 4 from the first energy storage unit 2.Therefore, control switch S2 and S3, so that they can by the positive current i1 provided by the first energy storage unit 2, this current i 1 is circulated to the first terminal 6 by the second terminal 7 of solenoid 4.Switch 16 was opened in this control stage so that single by the first energy storage unit 2 for solenoid 4 provides power.
The positive current i1 induced field of circulation in solenoid 4.
This magnetic field such as applies power to oil-fuel injector needle-valve, and it can not move this needle-valve, such as, because described power is intended to outside mobile needle-valve to wherein its position only leaned on.The current i 1 circulated in solenoid is measured by the measurement mechanism of the first arm 8.Therefore solenoid is magnetized.
As shown in Figure 3, then control converting system 5, so that by the energy trasfer put aside in advance in solenoid in capacitor 3.Switch S 2 and S3 open subsequently, and control switch S1 and S4 is in on-state simultaneously, whole as switch 16.Configure converting system 5 and after choosing diode, the positive current i1 circulated to the first terminal 6 by solenoidal second terminal 7 circulates, so that charge to it in capacitor 3.The current i 1 circulated in solenoid can use the measurement mechanism 12 of the second arm 8 to measure.In this stage, circulate to the first energy storage unit 2 without any electric current.Thus, the energy of solenoid 4 is shifted to capacitor 3.
As shown in Figure 4, continue to control converting system 5, so that the positive current i2 provided by the second energy storage unit 3 of precharge is circulated to the second terminal 7 by solenoidal the first terminal 6.For this purpose, switch S 1 and S4 and switch 16 conducting, Simultaneous Switching S2 and S3 opens.The current i 2 circulated in solenoid is measured by the measurement mechanism 12 of the second arm 8.
Such as 80V by the second energy storage unit 3 voltage put on the terminal of solenoid 4.The magnetic field contrary with aforesaid magnetic direction responded to by the solenoid 4 should powered by the second energy storage unit 3.Injector valve applies a power, and is moved to wherein hydrocarbon fuel and can inject the position of the combustion chamber of the Thermal Motor of vehicle.
The present invention is not restricted to the exemplary application of the fuel injection just described.
When using in the vehicle comprising Thermal Motor, the present invention may be used for:
-Controlling solenoid valve, such as gasoline respiratory box exhaust solenoid valve,
The DC motor of-control the exhaust of Thermal Motor or the electric actuator in air inlet loop, such as, control the actuation motor of the every other valve of EGR valve door or air inlet or exhaust,
The motor of the supercharging electric compressor of-control vehicle Thermal Motor.
Term " comprises " the same implication that should comprise term and " comprise at least one ", different unless otherwise indicated.

Claims (10)

1., for encouraging the circuit (1) of at least one electromagnet, comprising:
The inductance (4) of-formation electromagnet, described inductance (4) extends between the first terminal (6) and the second terminal (7),
-the first energy storage unit (2),
-the second energy storage unit (3), and
-converting system (5), be plugged between inductance (4) and energy storage unit (2,3), this converting system (5) is configured to:
-allow the positive current from the first energy storage unit (2) to be circulated to the first terminal (6) by second terminal (7) of inductance (4), thus perform the initial charge of inductance (4),
-allow the positive current circulated to the first terminal (6) by second terminal (7) of inductance (4) to circulate in the second energy storage unit (3), and
-allow the positive current (i2) from the second energy storage unit (3) to be circulated to the second terminal (7) by the first terminal (6) of inductance (4), thus perform the charging again of inductance.
2. circuit according to claim 1, this converting system (5) comprises H bridge.
3. circuit according to claim 2, this H bridge is included in two arms (8) extended between input terminal (9) and lead-out terminal (10), each arm (8) comprises two switches (11), and the central point between them is connected to each terminal (6,7) of inductance (4).
4. circuit according to claim 3, this converting system (5) comprises at least one first switch (15), and this at least one first switch (15) is arranged between the input terminal (9) of the first energy storage unit (2) and H bridge.
5. the circuit according to claim 3 or 4, this converting system (5) comprises at least one second switch (16), and this at least one second switch (16) is arranged between the input terminal (9) of the second energy storage unit (3) and H bridge.
6. the circuit according to above-mentioned arbitrary claim, this first energy storage unit (2) is battery.
7. the circuit according to above-mentioned arbitrary claim, this second energy storage unit (3) is capacitor.
8. the method for at least one electromagnet (4) is encouraged by circuit (1), this circuit (1) comprises the described electromagnet, the first energy storage unit (2), the second energy storage unit (3) and the converting system (5) that is arranged between energy storage unit (2,3) and inductance (4) that are formed by the inductance (4) extended between the first terminal (6) and the second terminal (7), wherein the method:
-control this converting system (5), so that the positive current (i1) provided by the first energy storage unit (2) is circulated to the first terminal (6) by second terminal (7) of inductance (4), thus perform the initial charge of described inductance (4)
-control this converting system (5), so that the positive current (i1) that the second terminal (7) by inductance (4) circulates to the first terminal (6) is supplied the second energy storage unit (3), thus the energy trasfer will put aside in inductance (4), and
-control this converting system (5), so that the positive current (i2) provided by the second energy storage unit (3) is circulated to the second terminal (7) by the first terminal (6) of inductance (4), thus perform the charging again of inductance (4).
9. method according to claim 8, wherein, the voltage being applied to inductance (4) by the first energy storage unit (2) during the initial charge of inductance (4) is less than the voltage being again applied to inductance (4) between charge period by the second energy storage unit (3) at inductance (4).
10. method according to claim 9, wherein, the first energy storage unit (2) is battery, and the second energy storage unit (3) is capacitor.
CN201380045821.0A 2012-07-03 2013-07-01 Electrical circuit for the excitation of at least one electromagnet Pending CN104603888A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1256371A FR2993093B1 (en) 2012-07-03 2012-07-03 ELECTRIC CIRCUIT FOR EXCITATION OF AT LEAST ONE ELECTRO-MAGNET
FR1256371 2012-07-03
PCT/FR2013/051538 WO2014006313A1 (en) 2012-07-03 2013-07-01 Electrical circuit for the excitation of at least one electromagnet

Publications (1)

Publication Number Publication Date
CN104603888A true CN104603888A (en) 2015-05-06

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CN201380045821.0A Pending CN104603888A (en) 2012-07-03 2013-07-01 Electrical circuit for the excitation of at least one electromagnet

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EP (1) EP2870614B1 (en)
CN (1) CN104603888A (en)
FR (1) FR2993093B1 (en)
WO (1) WO2014006313A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449008A (en) * 2016-12-27 2017-02-22 宁波市镇海华泰电器厂 Energy storage starting push-and-pull alternating electromagnet
CN106504851A (en) * 2016-12-27 2017-03-15 宁波市镇海华泰电器厂 The alternating electromagnet that supercharging starts
CN106531397A (en) * 2016-12-27 2017-03-22 宁波市镇海华泰电器厂 Capacitance energy storage pull-push AC electromagnet

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FR2772972A1 (en) * 1997-12-19 1999-06-25 Renault Electromagnet coil command for fuel injection
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Publication number Priority date Publication date Assignee Title
CN106449008A (en) * 2016-12-27 2017-02-22 宁波市镇海华泰电器厂 Energy storage starting push-and-pull alternating electromagnet
CN106504851A (en) * 2016-12-27 2017-03-15 宁波市镇海华泰电器厂 The alternating electromagnet that supercharging starts
CN106531397A (en) * 2016-12-27 2017-03-22 宁波市镇海华泰电器厂 Capacitance energy storage pull-push AC electromagnet
CN106531397B (en) * 2016-12-27 2018-06-29 宁波市镇海华泰电器厂 The push-and-pull alternating electromagnet of capacitive energy storage

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WO2014006313A1 (en) 2014-01-09
FR2993093A1 (en) 2014-01-10
FR2993093B1 (en) 2014-06-20
EP2870614A1 (en) 2015-05-13
EP2870614B1 (en) 2017-11-01

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