EP3036549A1 - Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobile - Google Patents
Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobileInfo
- Publication number
- EP3036549A1 EP3036549A1 EP14752901.0A EP14752901A EP3036549A1 EP 3036549 A1 EP3036549 A1 EP 3036549A1 EP 14752901 A EP14752901 A EP 14752901A EP 3036549 A1 EP3036549 A1 EP 3036549A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- battery
- signal
- intensity
- converter
- 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.)
- Withdrawn
Links
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- 239000007858 starting material Substances 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the object of the invention is to secure the supply of electrical energy to motor vehicle edge systems. It can also be applied more generally to electrical systems, in particular to on-board electrical systems, combining two electrical networks, interconnected by a DC / DC voltage converter (DC direct current converter), one of the following: networks comprising an electric accumulator battery recharged by the DC / DC converter.
- DC / DC voltage converter DC direct current converter
- the invention relates more particularly to securing the low voltage power supply of an automotive electrical system comprising two electrical networks interconnected by a DC / DC converter. These two networks can operate at identical nominal voltages or at different nominal voltages.
- the vehicle may include a high voltage network including electrical machines, so that to limit the losses by Joule effect in the conductors and in order to be able to use conductive cables of smaller diameter.
- the vehicle may include a second power grid powered at a lower voltage.
- a second power grid powered at a lower voltage.
- the second "low voltage" electrical network may comprise a dedicated electric storage battery, which is for example recharged by means of a DC / DC converter from the high voltage network during the driving phases of the vehicle.
- the DC / DC converter can be controlled by an electronic control unit which is itself powered by the battery of the low voltage network.
- an electronic control unit which is itself powered by the battery of the low voltage network.
- One way to secure this power supply may be to use the redundancy of electricity supply by the "low voltage” storage battery on the one hand, and by the supply of electricity to the low voltage network by the second network via the DC / DC converter. In this case, it is important, before switching off the low voltage network supply via the DC / DC converter, to check that the low voltage battery is actually connected to the low voltage network, so that it can then supply power to the low voltage grid.
- the patent application EP 195 8851 proposes the use of a second battery for securing the low-voltage on-board network.
- the addition of a second battery weighs down the vehicle and increases the cost of the vehicle.
- the object of the invention is to propose a system for monitoring the good connection of a battery of a low voltage network in a motor vehicle powered by two electrical networks interconnected by a DC / DC converter, in particular when one of the networks includes a battery recharged through the converter from the other network.
- the network fed through the DC / DC converter sometimes comprises a starter, but generally does not include a generator of energy (alternator or alternator starter for example), the latter being carried on the first power grid.
- the proposed monitoring device must be reliable, not disturb the electrical components and electrical consumers of the two networks and must be able to be set up for a low cost and without burdening the vehicle.
- the invention proposes a method of detecting an electric battery disconnection in a system equipped with two electrical networks interconnected by a DC voltage converter (DC / DC) in DC voltage, the battery belonging to one two networks, and the converter for recharging the battery, that is to say connected so as to recharge the battery.
- DC / DC DC voltage converter
- control of the converter is configured to ensure, when the converter is running, the power supply of the network comprising the battery, and to recharge the battery so that it can take power in turn the network when the converter is inactive.
- a predefined voltage signal is added to a DC voltage component supplied by the converter to the network comprising the battery, and the current flowing through the battery is measured by searching for a current intensity signal corresponding to the voltage signal added, to verify that the battery is connected to the network.
- the system can be for example an electric motor vehicle or a hybrid propulsion vehicle.
- the converter can be configured to recharge the battery at intervals of time, the battery supplying the network whose it is part of the other time intervals.
- the nominal operating voltage of the network associated with the battery is preferably lower than the nominal voltage of the other network.
- this other network comprises a second battery of higher nominal voltage.
- the term "battery” designates by default the battery belonging to the network supplied with voltage by the converter, that is to say the network of lowest nominal voltage.
- the highest rated voltage network may include a battery, but this is preferably referred to as a "second battery".
- the added voltage signal and the desired intensity signal are periodic signals.
- These signals may be for example reciprocal periodic signals, or periodic signals of constant sign.
- the amplitude of the voltage signals is preferably reduced in comparison with the nominal voltage of the network fed by converter and by the battery, for example the amplitude is less than 2V for a nominal voltage network close to 14V.
- the amplitude of the voltage signal may for example be between 0.2V and 1.5V, and preferably between 0.2V and 0.5V.
- the frequency of the periodic signals may for example be between 20 Hz and 100 Hz.
- the frequency of the periodic signals can be constant.
- it is possible to send a particular pattern of periodic signals for example a pattern making it possible to obtain a noise induced in current close to that induced by a conventional thermal vehicle alternator. We can then use intensity signal detection strategies already developed for such vehicles with alternator.
- the added voltage signal is a modification, of predefined sign, of the voltage level
- the intensity signal is a variation, of predefined sign, of the intensity level. It is a sudden change, a predefined sign, the voltage level, and the intensity signal is a variation, of predefined sign, of the intensity level.
- the amplitude of the Variation of the voltage level is preferably reduced in comparison to the nominal voltage of the converter-fed network and the battery. For example, an amplitude voltage step of between 0.2V and 2V, and preferably between 0.2V and 1V, may be applied.
- the voltage signal is not added and the current signal is only sought when the absolute value of the intensity crossing the battery is below an intensity threshold.
- the intensity threshold is preferably constant. For example, it is possible to trigger the addition of the AC voltage component if the absolute value of the intensity crossing the battery remains below the intensity threshold for a duration greater than a time threshold, and to continue this addition as long as the intensity remains below the intensity threshold.
- the supply voltage of the circuit comprising the battery can be reduced if the absolute value of the intensity crossing the battery is below the intensity threshold, so as to oblige the battery, if it is connected. to its network, to charge a current in the network.
- the simple reading of the current passing through this battery then makes it possible to detect its possible disconnection
- the amplitude of the voltage signal is increased and a new detection attempt is made. It is possible to make a single increase in the amplitude of the voltage signal, or to provide several amplitude levels to be tested one after the other.
- the voltage signal can be added to a setpoint controlling the output voltage of the converter.
- the output voltage of the converter the voltage that the converter delivers to the network comprising the battery.
- the voltage signal can be produced by a dedicated oscillating circuit and be added to the output voltage of the converter.
- the invention also proposes a motor vehicle equipped with two electrical networks having two different voltage levels and interconnected by a DC voltage converter (DC / DC).
- the converter is configured to recharge the battery, and the vehicle includes an estimator of the current through the battery.
- the estimator is a current sensor connected directly between the negative terminal of the battery and the ground without any other electrical consumer or connection point of an electrical consumer interposed between the terminal of the battery and the ground of the battery. circuit-, or connected directly between the positive terminal of the battery and the ground.
- the vehicle comprises means for adding a predefined voltage signal to a DC voltage delivered by the converter to the battery, and comprises filtering means able to detect in the intensity signal measured by the intensity estimator, a signal current corresponding to the added voltage signal.
- corresponding intensity signal is meant a current intensity signal normally obtained during the transmission of the voltage signal, when the battery is correctly connected to the network.
- the intensity signal can be of a substantially identical frequency. If the voltage signal is a sudden change in voltage level, the intensity signal may be an offset of the previous intensity curve, a predefined sign depending on the sign of the voltage level change.
- the vehicle may include an electronic control unit configured to trigger the addition of the voltage signal when the absolute value of the current through the battery becomes below an intensity threshold.
- the addition of the voltage signal is triggered if the absolute value of the intensity crossing the battery remains below an intensity threshold - the intensity threshold may for example be between 0.5A and 2A according to the accuracy of the current measuring device - during a predefined duration, for example for more than one second, or for a period of between 1 and 5s.
- the electronic control unit is configured to emit an alert message if for a duration greater than a duration threshold, the intensity signal is not detected while the voltage signal is added to the signal.
- An alert message may for example be displayed at the driver's address, or be sent by voice synthesis.
- the alert message of the electronic control unit can lead to the implementation of safeguarding measures allowing the vehicle to arrive safely despite disconnection of the battery, for example a prohibition of the power off of the electrical network feeding the battery network through the converter. Safeguarding measures may include raising the idle speed of a combustion engine. The safeguarding measures may for example include the prohibition of a "stop and start" procedure with automatic shutdown of a heat engine during temporary stops of the vehicle if the engine uses a starter powered by the battery.
- FIG. 1 is a schematic representation of a vehicle equipped with a detection device according to the invention
- FIG. 2 is a schematic representation of the electrical system of a vehicle equipped with a detection device according to the invention 1
- FIG. 3 is a simplified example of an operating algorithm of a detection system according to the invention.
- a vehicle according to the invention comprises a first electrical network 3 and a second electrical network 2, the first electrical network 3 or high voltage network operating at a substantially higher voltage, for example a voltage at least 1, 5 times higher and preferably substantially twice as high as the second network 2 or network "low voltage" 2.
- the vehicle 1 is a "light hybrid" type vehicle, that is to say that it comprises a heat engine 5 capable of driving the vehicle forward and comprises at least one electric machine 6 which is connected to certain wheels of the vehicle so that it can contribute as an electric motor to provide the driving torque of the vehicle.
- the electric machine 6 also functions as an electric generator, for example for recovering electrical energy during so-called regenerative braking phases or for acting as an alternator for supplying the electrical network 2 for energy management purposes or charging the BT battery.
- the heat engine can typically be associated with a starter 8 capable of mechanically starting the rotation of the heat engine when it is stopped, particularly for initial starts if the electrical network 3 (torque B att HT 1 1 and electric machine 6) does not have the power necessary to ensure the start of the cold engine 5.
- the starter 8 is powered for example by the low voltage network 2.
- the heat engine 5 may not be associated with a starter 8 and be launched directly by the electrical machine 6 connected to the high voltage network 3 and providing other functions mentioned above.
- the second electrical network 2 is connected to a low voltage mass 21 and powered by a first low voltage battery 10.
- the low voltage battery 10 may for example have a nominal operating voltage of between 12 and 13 volts.
- the first high voltage electrical network 3 comprises a high voltage battery 1 1 and is connected to a high voltage mass 22 which may possibly be the same mass as the low voltage mass 21.
- a direct current DC converter 4 (“DC / DC converter”) is interposed between the low voltage network 2 and the high voltage network 3, so that to be able to send a direct current from the high-voltage network 3 to the low-voltage network 2.
- the converter 4 is controlled by an electronic control unit 12 which itself is supplied with low-voltage current by the second network 2.
- the converter 4 may comprise a alternating voltage generator 13 produced by a hardware solution or by a strategy integrated in the control software which makes it possible to superimpose on the DC voltage sent to the second low voltage network 2, an AC component of amplitude lower than the DC average voltage sent to the network 2.
- the second low-voltage network 2 typically comprises low-voltage consumers such as human-to-consumer interfaces.
- machine 23 allowing the driver to drive the vehicle and to access various controls of the vehicle, includes other consumers contributing to the comfort of the driver and the passengers, these consumers 14 being able for example to include, a heating system, a sound system , and may include vehicle safety systems such as braking or trajectory control, steering assistance or visibility systems.
- the low voltage battery 10 is connected to a current estimator 7, for example to a current sensor 7, screwed on the negative terminal of the battery 10.
- the intensity value I measured by the current sensor 7 is transmitted to the electronic control unit 12.
- the voltage converter 4 comprises a signal generator 13 able to modify the output voltage of the converter 4, in other words the voltage that the converter 4 applies between the terminals through which it is connected. to the second low-voltage network 2.
- the generator signal 13 may for example be configured to be able to add to the output voltage of the converter, a periodic signal, for example an alternating signal, or another type of signal such as an offset of the output voltage applied quickly and for a period of time. predefined.
- FIG. 2 diagrammatically illustrates the operation of a detection system according to the invention, making it possible to detect whether the low-voltage battery 10 is no longer connected to the low-voltage network 2.
- FIG. 2 shows elements that are common to FIG. 1, the same elements being designated by the same references. In FIG. 2, only a part of the low voltage network is represented, as well as the output of the converter 4.
- the converter 4 is driven by the electronic control unit 12 by sending a setpoint Ucons to deliver a DC output voltage U s to the low voltage network 2.
- This DC voltage It is sent to a first input of an adder 18, the second input of an adder 18 receiving a voltage U va r delivered by an alternating voltage generator 16 external to the converter 4.
- the alternating voltage generator 16 is for example powered by the converter 4, or is powered directly by the battery 1 1.
- the low voltage network 2 is thus fed, at the output of the adder 18, by a voltage UBT which has a DC component, and an oscillation component of reduced amplitude relative to the average value of the DC component.
- the amplitude chosen is, however, such that it makes it possible to cause a variation of substantially the same frequency of the current I flowing through the low voltage battery 10, the amplitude of this oscillation of the current being detectable by the current sensor 7 according to FIG. precision it has, for example an amplitude of the order of 1A or an amplitude of a few Amperes, for example between 1 to 3 A.
- the electronic control unit 12 is configured to be able to detect this AC component of the current I when the battery 10 is correctly connected to the low voltage network 2, in particular when the positive terminal 9 of the battery is connected to the output of the DC / DC converter and the negative terminal of the battery 10 is properly connected to the low-voltage ground 21.
- the battery 10 is disconnected from the network 2 by any of its terminals, it is no longer crossed by the AC current component corresponding to the alternating voltage signal delivered by the AC voltage generator 16.
- the current sensor 7 may for example be interposed between the negative terminal of the battery 10 and the low voltage mass 21.
- the current sensor could, according to other embodiments, be arranged directly on the + terminal of the battery 10 .
- the low voltage network In order not to disturb the operation of the low voltage consumers too much, it is possible to supply the low voltage network with a DC voltage from the converter 4, as long as the current detected by the current sensor 7 is greater than threshold intensity. Above this threshold intensity, depending on the sign of the intensity, it can be considered that either the battery delivers a current to the consumers 14, or it receives a charging current of the converter 4, and therefore it is a priori connected to the network 2.
- the electronic control unit 12 can therefore trigger the generation of the alternating signal U va r and at the same time perform a filtering of the intensity signal I arriving from the current sensor 7 to look for an AC current component therein corresponding to the alternating voltage signal U var -
- a first amplitude of the alternating voltage signal U var may be added in a first step, and if this amplitude does not make it possible to obtain a detection of a corresponding signal of intensity, increase to one or several times, the amplitude of the signal U goes r while continuing to search for the signal corresponding to the level of the measured intensity 7.
- the electronic control unit 12 may, for example, trigger an alarm sent to the user. warning the driver to warn him of a bad connection of the battery, and may also trigger an emergency operating mode in which the inverter 4 is kept active until the vehicle controls are completely extinguished in order to avoid that the vehicle remains immobilized before reaching its destination.
- the voltage signal can be driven by the same electronic control unit as that connected to the current sensor 7, so that the amplitude of the voltage signals can be controlled with feedback from the oscillations. of current intensity possibly caused, and to avoid a divergence of these oscillations of current intensity.
- FIG. 3 is a simplified representation, in the form of an algorithm 20, of an operating mode of the electronic control unit 12 enabling it to estimate whether the battery 10 is indeed well connected to the network 2. As illustrated on the algorithm 20 of FIG. 3, the electronic control unit 12 regularly performs a test 21 to check whether the absolute value of the intensity crossing the battery is greater than a threshold value I m i n .
- the electronic control unit continues to monitor the absolute value of the intensity, and does not trigger the generation of the DC voltage output signal of the DC converter. / DC 4.
- the electronic control unit When the absolute value of the intensity becomes less than or equal to the intensity threshold I m i n, that is to say when the test 21 is negative, it goes to a step 22.
- the electronic control unit analyzes the signal of the current sensor 7 to search for an intensity signal corresponding to a predefined signal generated either directly by the DC / DC converter, or by a device whose voltage is added to the output voltage of the DC / DC. If the signal current intensity is detected, here an "I alternative" signal, the electronic control unit returns to step 21 and continues to monitor the absolute value of the current through the battery.
- the electronic control unit may proceed to a step 25 where it alerts the driver that the battery is disconnected, and where it triggers backup measures as necessary to vehicle to drive until the driver explicitly requests the stopping of the vehicle, considering himself as having arrived at his destination.
- the electronic control unit if it, during the test 22, does not detect the desired signal of current intensity, it can go to a step 23 where it controls an increase in the amplitude of the signal output voltage of the DC / DC.
- the control unit can then check, for example in a step 24, whether the amplitude of the voltage signal has reached a threshold beyond which one no longer wishes to go. If the maximum allowable signal amplitude is reached and the intensity signal has still not been detected, it proceeds to the warning 25 warning the driver that the battery is disconnected. Otherwise, once the amplitude of the voltage signal is increased, it returns to step 22 of seeking the intensity signal to test whether this time a current signal has become detectable.
- the invention is not limited to the embodiments described and can be declined in many variants.
- the two networks interconnected by the DC / DC converter can operate at nominal voltages close to or even substantially equal nominal voltages.
- a low AC component can be continuously emitted, and then the amplitude of this component can be increased if a corresponding signal of intensity is not detectable. It is conceivable to continuously seek an alternating current component or to search for a specific current intensity signal only when the average absolute value of the intensity falls below a certain threshold.
- the voltage signal added to the DC output voltage of the converter may be a periodic signal, a constant frequency signal or a complex signal chosen to reproduce certain characteristics of the current noise usually generated by an alternator.
- the voltage signal U va r may be a non-reciprocal periodic signal, or even a voltage increment applied in the form of a slot, that is to say comprising a rising edge, in order to try to detect a current intensity increment of corresponding sign.
- the desired current intensity signal will then be non-reciprocating, and then, for example, a change in the absolute value of the intensity of the current will be sought.
- the voltage delivered by the converter 4 is increased or reduced, preferably as fast as possible (while limiting the impact of this change in voltage on the consumers of the network 2) by applying a rising voltage front or a falling edge, to set this voltage value to a new constant value.
- This rapid change of voltage delivered by the converter will preferably be controlled by the control electronics 12 by a modification of the target voltage.
- An acceptable alternative solution may be to integrate this converter output voltage change internally of the DC / DC converter.
- the advantage of the latter type of signal is that it can enable the implementation of a simplified disconnection detection strategy in that it consists only in detecting that a non-zero current, the battery 10 in front of by reacting to this evolution of the output voltage of the converter 10 either to discharge in order to ensure the supply continuity of the network 2, or to charge, according to the chosen voltage evolution. It can also minimize disturbances caused to the electrical consumers of the low voltage network 2 if the magnitude of the output voltage change of the converter may remain low while being sufficient to detect the reaction of the battery.
- the system for detecting a bad battery connection makes it possible to warn the driver if the battery is incorrectly connected and also makes it possible to set up procedures for safeguarding the operation of the vehicle so that it can arrive at a good position. port without using the low voltage battery.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1358125A FR3009869B1 (fr) | 2013-08-22 | 2013-08-22 | Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobile |
PCT/FR2014/051586 WO2015025089A1 (fr) | 2013-08-22 | 2014-06-25 | Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobile |
Publications (1)
Publication Number | Publication Date |
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EP3036549A1 true EP3036549A1 (fr) | 2016-06-29 |
Family
ID=49949779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14752901.0A Withdrawn EP3036549A1 (fr) | 2013-08-22 | 2014-06-25 | Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3036549A1 (fr) |
JP (1) | JP6306185B2 (fr) |
CN (1) | CN105556320B (fr) |
FR (1) | FR3009869B1 (fr) |
WO (1) | WO2015025089A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015008445A1 (de) * | 2015-06-30 | 2017-01-05 | Audi Ag | Verfahren und Betrieb eines elektrischen Bordnetzes eines Kraftfahrzeugs und Kraftfahrzeug |
DE102016216845A1 (de) * | 2016-09-06 | 2018-03-08 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Erkennung einer fehlenden elektrischen Verbindung eines Energiespeichers mit einem Energieversorgungssystem, insbesondere ein Bordnetz eines Kraftfahrzeugs |
FR3057672B1 (fr) * | 2016-10-19 | 2020-05-01 | Renault S.A.S. | Confirmation du diagnostic de deconnexion batterie 12 volts d'un reseau de bord avec alternateur pilote |
JP6610504B2 (ja) * | 2016-10-31 | 2019-11-27 | トヨタ自動車株式会社 | 電力供給システム |
TWI613117B (zh) * | 2017-01-17 | 2018-02-01 | 三陽工業股份有限公司 | 節能判斷方法 |
FR3073684B1 (fr) * | 2017-11-16 | 2021-03-12 | Valeo Equip Electr Moteur | Machine electrique pour un vehicule automobile comprenant un capteur de courant |
FR3085486B1 (fr) | 2018-08-29 | 2021-01-15 | Renault Sas | Procede et systeme de detection d'un court-circuit ou d'un circuit ouvert d'une batterie 12v lors d'une phase de roulage d'un vehicule automobile |
WO2020053771A1 (fr) * | 2018-09-13 | 2020-03-19 | Meta System S.P.A. | Système de contrôle de l'isolation électrique dans des convertisseurs de voitures électriques |
JP2021078295A (ja) * | 2019-11-12 | 2021-05-20 | 株式会社東芝 | 充電装置、電池診断システム、及び、充電方法 |
FR3113640B1 (fr) | 2020-08-25 | 2022-08-05 | Psa Automobiles Sa | Vehicule securise vis-a-vis du risque de perte d’une batterie de servitude. |
DE102021131645A1 (de) | 2021-12-01 | 2023-06-01 | Audi Aktiengesellschaft | Verfahren zur Beurteilung einer elektrischen Verbindung eines elektrischen Energiespeichers mit einem Bordnetz, sowie elektronisches Batteriebeurteilungssystem und Fahrzeug |
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JP2745149B2 (ja) * | 1989-04-25 | 1998-04-28 | 松下電工株式会社 | 信号回線の断線検知方法及びこの方法を用いた断線検知システム |
US6448778B1 (en) * | 2001-01-29 | 2002-09-10 | Honda Of America Mfg., Inc. | Automated verification of proper connectivity of components to a wiring harness during assembly of article of manufacture |
JP4538990B2 (ja) * | 2001-06-12 | 2010-09-08 | 株式会社豊田自動織機 | 電圧制御装置 |
US6931332B2 (en) * | 2003-10-01 | 2005-08-16 | General Electric Company | Method and system for testing battery connectivity |
JP2005354825A (ja) * | 2004-06-11 | 2005-12-22 | Nissan Motor Co Ltd | ハイブリッド車両のsoc演算装置 |
FR2957679B1 (fr) * | 2010-03-19 | 2012-03-09 | Peugeot Citroen Automobiles Sa | Dispositif de detection de deconnexion d'une batterie d'un reseau d'alimentation electrique, par modification de la tension de regulation d'une source d'alimentation electrique |
JP5071516B2 (ja) * | 2010-04-22 | 2012-11-14 | 株式会社デンソー | 電力変換装置 |
JP2012242330A (ja) * | 2011-05-23 | 2012-12-10 | Omron Automotive Electronics Co Ltd | 漏電検知装置 |
KR101262973B1 (ko) * | 2011-05-24 | 2013-05-08 | 기아자동차주식회사 | 하이브리드 전기 차량의 비상주행 제어시스템 및 그 제어방법 |
DE102011087678A1 (de) * | 2011-12-02 | 2013-06-06 | Conti Temic Microelectronic Gmbh | Vorrichtung zur Erfassung des Zustands eines zu prüfenden Akkumulators |
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2013
- 2013-08-22 FR FR1358125A patent/FR3009869B1/fr active Active
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2014
- 2014-06-25 CN CN201480051241.7A patent/CN105556320B/zh active Active
- 2014-06-25 WO PCT/FR2014/051586 patent/WO2015025089A1/fr active Application Filing
- 2014-06-25 EP EP14752901.0A patent/EP3036549A1/fr not_active Withdrawn
- 2014-06-25 JP JP2016535513A patent/JP6306185B2/ja active Active
Non-Patent Citations (2)
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Also Published As
Publication number | Publication date |
---|---|
WO2015025089A1 (fr) | 2015-02-26 |
JP2016528870A (ja) | 2016-09-15 |
FR3009869A1 (fr) | 2015-02-27 |
CN105556320A (zh) | 2016-05-04 |
JP6306185B2 (ja) | 2018-04-04 |
FR3009869B1 (fr) | 2016-10-21 |
CN105556320B (zh) | 2019-08-30 |
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