WO2017148471A1 - Procédé de vérification électrique de fonctionnement au niveau d'un véhicule - Google Patents

Procédé de vérification électrique de fonctionnement au niveau d'un véhicule Download PDF

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Publication number
WO2017148471A1
WO2017148471A1 PCT/DE2017/100140 DE2017100140W WO2017148471A1 WO 2017148471 A1 WO2017148471 A1 WO 2017148471A1 DE 2017100140 W DE2017100140 W DE 2017100140W WO 2017148471 A1 WO2017148471 A1 WO 2017148471A1
Authority
WO
WIPO (PCT)
Prior art keywords
diagnostic
electrical
network
switching device
potential difference
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.)
Ceased
Application number
PCT/DE2017/100140
Other languages
German (de)
English (en)
Inventor
David Seibert
Tim Bender
Philipp Haberschusz
Jens Baunach
Dragan Skundric
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FEV Europe GmbH
Original Assignee
FEV GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FEV GmbH filed Critical FEV GmbH
Priority to DE112017001135.3T priority Critical patent/DE112017001135A5/de
Publication of WO2017148471A1 publication Critical patent/WO2017148471A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
    • 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
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • 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
    • 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
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage

Definitions

  • the present invention relates to a method for an electrical functional test in a vehicle. Furthermore, the invention relates to a test system for an electrical functional test in a vehicle.
  • an object of the present invention to at least partially overcome the disadvantages described above.
  • an improved and / or more reliable and / or meaningful functional test should be provided, which can be implemented easily and inexpensively.
  • the object is preferably achieved by a method for an electrical functional test in a vehicle having at least one electrical energy store and at least one electrical component of an electrical network of the vehicle that can be electrically connected to the energy store.
  • the vehicle is preferably designed as an electric vehicle or as a hybrid vehicle, particularly preferably as a passenger car or a truck.
  • the vehicle preferably comprises the electrical network, for example a vehicle electrical system and / or direct current electrical system (DC bus), wherein the network is particularly preferably designed as a high-voltage network.
  • the vehicle comprises the (at least one) electrical component, which may be embodied, for example, as a high-voltage component of the electrical network of the vehicle.
  • the network also has further components, for example a second and / or third component.
  • the network comprises at least one electrical switching device for, preferably complete, interruption and / or production of the electrical connection between the energy store and the electrical component, and / or for electrical supply of the component, by a switching operation of the electrical switching device.
  • the electrical energy store is preferably embodied as a rechargeable battery and / or as a battery system and / or as at least one battery cell of the vehicle.
  • an electrical supply of the at least one electrical component of the network is effected by the energy store, for example only when the electrical switching device is closed and / or establishes the electrical connection.
  • the process according to the invention preferably comprises at least the following steps, which are particularly preferably carried out (for functional testing) successively in time or in any order:
  • the defined triggering preferably of the switching operation or for switching, of the electrical switching device, whereby a defined actuated state of the electrical switching device is preferably controlled
  • the defined triggering can, for example, also consist of a failure to re-trigger, if, for example. the desired desired functional state should already be present
  • Detecting a diagnostic potential difference specific to a functional state of the electrical switching device on a diagnostic path of the diagnostic network wherein the diagnostic potential difference is formed as a part of the total potential difference, preferably by a voltage divider,
  • the functional test can be simplified and particularly reliable by evaluating the potential difference of the diagnostic potential, ie comparing and / or assigning the detected diagnostic potential difference with (or to) the comparison potential range. It is preferably provided that only a single potential difference, ie the diagnostic potential difference, is evaluated jointly for all functional states to be determined and / or for all switching devices to be tested in order to determine the respective functional state. In this case, a prerequisite for the functional test is that the electrical energy store is previously electrically connected to the network of diagnoses of the network.
  • the term "electrical connection” is understood as meaning that a flow of current is made possible and / or a circuit is closed and / or an electrically conductive connection (for example by a switching element) is brought about and / or a blocking resistor is reduced and / or an insulation resistance is reduced.
  • the total potential difference is provided, for example, as the supply voltage to the diagnostic network to facilitate operation of the diagnostic network, eg, providing the diagnostic potential difference.
  • an electrical interruption of the circuit is canceled by the electrical connection, wherein the interruption is not necessarily a complete galvanic isolation or decoupling is understood, but for example, an increase of a blocking resistor or insulation resistance can be understood.
  • the defined activation of the electrical switching device may also be a control according to normal operation, so that the current state of the switching device is detected in normal operation according to the functional test, and preferably no additional switching of the switching device takes place for the functional test.
  • the diagnostic path of the diagnostic network is a current path for common current routing after a combination of further current paths, for example test paths, of the diagnostic network.
  • at least one tap in the diagnostic path for voltage measurement is used to detect the potential difference of the diagnostic potential, preferably by a voltage measuring device and / or by a diagnostic device and / or by a
  • Diagnostic potential difference measuring device Furthermore, it is preferably provided that the total potential difference is also detected for the functional test, for example by a voltage measurement by the diagnostic device and / or by an overall potential difference measuring device.
  • the evaluation of the diagnostic potential difference and / or the determination of the functional state and / or the comparison result comprises not only the comparison of the detected diagnostic potential difference with the comparison potential range further comparisons and / or assignments and / or arithmetic operations and / or attraction of the detected total potential difference. This has the advantage that a particularly accurate and meaningful result of the functional test can be determined.
  • the specific functional state preferably as the actual state of the switching device, is compared with the controlled state, whereby a functional result is determined.
  • a defined state is determined by the defined driving of the electrical switching device, although in the fault state of the switching device, the actual state of the switching device may deviate from the controlled state.
  • the actual state of the electrical switching device can thus preferably be determined in order to advantageously ensure safe operation of the network.
  • the electrical connection of the energy store to the diagnostic network is performed by switching a diagnostic switching element, whereby a current flow through a Diagnoseprüfelement, preferably in the diagnostic path, in the diagnostic network is initiated, and thereby preferably a current flow proportional diagnostic potential difference is provided on Diagnoseprüfelement ,
  • a diagnostic switching element whereby a current flow through a Diagnoseprüfelement, preferably in the diagnostic path, in the diagnostic network is initiated, and thereby preferably a current flow proportional diagnostic potential difference is provided on Diagnoseprüfelement
  • at least two or more electrical switching devices can be provided, wherein for each of the switching devices, the respective functional state, for example, open or closed, can be determined, preferably only by a single detection of the (single) diagnostic potential difference, more preferably by (only / exclusively ) a (single) voltage measurement.
  • the diagnostic test element with at least one further test element of the diagnostic network forms a voltage divider, so that the diagnostic potential difference is formed as a part (ie as a partial voltage) of the total potential difference.
  • the diagnostic switching element is designed as an electrical, preferably remotely controllable, switch, and preferably prevents (in normal operation) in the open state, a permanent discharge of the energy storage device via the diagnostic network.
  • the test elements, such as the diagnostic test element, of the diagnostic network are each designed, for example, as ohmic resistors and / or impedances, such as, for example, coils or capacitors, and particularly preferably differently and / or with different resistance values and / or high impedance.
  • an error state of the respective switching devices can be determined on the basis of the comparison result and / or by the comparison and / or the assignment of a single (common) detected diagnostic potential difference and / or the comparison and / or the assignment with (or to) different comparison potential ranges That is, a functioning (eg, open) switching device or a defective (eg, closed) switching device may be determined.
  • the comparison potential ranges are preferably value ranges for possible voltage values of the diagnostic potential difference.
  • a first comparison potential range is provided, which is specific for a normal functional state of all (for example, to be tested) electrical switching devices.
  • a second Provided comparison potential range which is specific for a defective first switching device (in a defective functional state)
  • a third comparison potential range which is specific for a defective second switching device (in the defective functional state). It is also conceivable that further switching devices of the network are provided, in which case further comparison potential ranges, which are specific to the respective further switching devices, may be provided.
  • the comparison potential ranges are each preferably determined by forming a (value) range around this value for a value of the diagnostic potential difference that is specific to the respective functional state of the respective (electrical) switching device.
  • B. taking into account tolerances such as measurement tolerances and / or resistance tolerances. This value range is then z.
  • a non-volatile memory of a diagnostic device It can, for. B. at least one of the following functional states, preferably fault conditions, be provided and / or determined, and / or from each other and / or normal functional states of the respective switching devices are distinguished:
  • a closed and / or adhesive and / or defective (functional and / or fault) state of the first switching device for. B. when assigning the detected diagnostic potential difference to a second comparison potential range, a closed and / or adhesive and / or defective (functional and / or fault) state of the second switching device, for. B. when assigning the detected diagnostic potential difference to a third comparison potential range, a closed and / or adhesive and / or defective (functional and / or error) state of the other switching device, eg. B. when assigning the detected
  • Diagnostic potential difference to another comparison potential range can be achieved in the context of the invention if, for the determination of the functional state of the electrical switching device and / or further electrical switching devices, only a single diagnostic potential difference, preferably as a single electrical voltage value, is detected, and preferably one of the number to be determined Functional state and / or switching devices dependent number of comparison potential areas is compared to determine the comparison result.
  • the diagnostic network is designed such that the properties of the diagnostic network (such as resistance values and / or potentials of the diagnostic network) change as a function of a change in the functional states, so that preferably by an evaluation a single diagnostic potential difference or a single voltage can be detected, which functional state have the respective switching devices. This allows a particularly simple and fast as well as inexpensive functional testing of one or more switching devices.
  • the supply of the electrical component is limited by the energy store, preferably by a reduction or complete interruption of the supply of the electrical Component.
  • the electrical component can be designed as a consumer of the network, but preferably also as an energy source such as a charger. Accordingly, the supply of the electrical component is also generally understood as meaning in general an electrical connection and / or energy transfer, also, for example, from the electrical component to the energy store.
  • the interruption of the supply preferably makes it possible for the functional test to be carried out even with a voltage-free network, preferably with a voltage-free and / or deactive DC bus, for example also by a UDS (Unified Diagnostic Services).
  • the specific functional state is a fault state of the electrical switching device, preferably a failure and / or faulty execution of the control, preferably a failure to open, more preferably a contact adhesive, the electrical switching device.
  • the defined driving the at least one electrical switching device opening of each of the electrical switching devices is driven.
  • the defined activation is preferably carried out in such a way that all switching devices are opened.
  • test system for an electrical functional test in a vehicle comprising:
  • At least one electrical energy storage preferably a high-voltage memory and / or a rechargeable high-voltage battery system, for an electrical network, preferably high-voltage network, the vehicle, which preferably serves for the electrical supply of at least one electrically connected to the energy storage electrical component of the network .
  • At least one electrical switching device of the network preferably a relay and / or contactor, for, preferably complete, interruption and / or production of the electrical connection between the (electric) energy storage and the electrical component by a switching operation of the electrical switching device, preferably by opening and / or closing the electrical switching device,
  • a diagnostic network is provided with a diagnostic switching element for functional testing of the electrical switching device on the network, and the diagnostic switching element, preferably an electrical switch, between the energy storage and a Diagnoseprüfelement, preferably a resistor and / or an impedance, is arranged in a diagnostic path of the diagnostic network, wherein the diagnostic switching element is switchable to initiate the functional test.
  • the diagnostic network has at least one (for the respective electrical switching device) specific test path for each of the at least one electrical switching device, which is electrically connected to the (eg all) main contacts of the respective electrical switching device.
  • the test path is connected to the electrical switching device, for which the test path is specific, such that the electrical switching device is integrated in the circuit of the test path.
  • the test path is electrically connected to the main contacts such that the respective test path is electrically influenced by a functional state of the respective electrical switching device, for example so that an open functional state of the respective electrical switching device in a different way affects a potential difference diagnosis as a closed functional state of the respective electrical switching device.
  • each test path is preferably electrically connected to the diagnostic path of the diagnostic network, so that the functional state can be determined on the basis of a detectable diagnostic potential difference on the diagnostic path.
  • the main contact differs from the auxiliary contacts of the switching device, which serve for example only for driving the switching device.
  • the main contacts are designed to perform the interruption and / or production of the electrical connection directly.
  • At least two or more electrical switching devices are preferably provided, with an associated specific test path of the diagnostic network being provided correspondingly for each of these switching devices. All test paths are electrically connected, for example, to only one diagnostic path of the diagnostic network, so that the respective functional state of the respective switching devices, ie preferably each individual functional state of all the switching devices, can be determined on the basis of the one detectable diagnostic potential difference.
  • the functional state eg, open or closed
  • the functional state for the individual switching devices can be determined, so that, for example, a first functional state of a first electrical switching device is different from a second functional state of a second electrical switching device can be and / or is distinguishable.
  • the at least one electrical switching device is in each case designed as a (eg remotely controllable) switching device, preferably as a high-voltage switching device and / or an electrical relay and / or an electrical contactor, is formed, and preferably the network is designed as a high-voltage electrical system of the vehicle.
  • the test element as a, preferably high-impedance, and / or as a high-impedance Resistance be executed. This allows reliable interruption and / or establishment of the electrical connection between the energy store and the electrical component, so that the functional test can be carried out when the high-voltage bus is not activated and thus, for example, via a workshop tester.
  • the electrical switching device may be designed as an electrical fuse for interrupting a circuit in the event of a fault (for example in the event of an overcurrent) and / or as a high-voltage relay and / or as a high-voltage contactor.
  • the switching device differs based on the technical characteristics and / or specifications of the switching element, such as the diagnostic switching element, wherein the switching element is designed only as a simple switch for switching currents in the diagnostic network.
  • the diagnostic network is arranged on the high-voltage side of the network, wherein preferably in contrast to the switching device by the switching element due to the high impedance of the diagnostic network only small currents must be switched and / or can.
  • the diagnostic network eg permanent
  • the diagnostic network is at least partially integrated in the network of the vehicle. This enables a fast and reliable functional test in the vehicle.
  • At least one first electrical switching device of the network preferably in a positive current path of the network, and a second electrical switching device of the network, preferably in a negative current path of the network, and / or further electrical switching devices of the network, in each case for the complete interruption and / or production of the electrical connection between the energy store and the electrical component, and / or for carrying out a further network function, are provided.
  • the further network function is, for example, a connection of a charger and / or a pre-charge function. In this way, for example, any number of switching devices can be used and tested by the functional test, for which purpose the diagnostic network is cost-effective and easily expandable by further test paths and / or switching elements.
  • the further switching elements can serve, for example, to activate the further test paths for testing the further switching devices.
  • the positive path and the negative path are each connected to different electrical poles of the energy store, so that a reliable interruption of the electrical connection is possible.
  • a specific test path is provided, preferably with at least one associated test element, wherein each of the test paths is electrically connected to the one diagnostic path of the diagnostic network as a common diagnostic path, so that Preferably, based on the one detectable diagnostic potential difference on the diagnostic path of the functional state for all of the electrical switching devices (each individually and / or distinguishable) can be determined.
  • the functional state for various switching devices can be determined quickly and reliably by a single voltage measurement.
  • the diagnostic network has at least one shutdown element, which is switched to cut off an electrical supply of the electrical component and / or to switch off the functional test, so that preferably with open electrical switching device and / or when the diagnostic switching element is open, preferably complete, preventing binding of the current flow and / or a preferably complete interruption of the electrical connection between the energy storage and a first portion of the diagnostic network on the one hand and the electrical component and a second portion of the diagnostic network on the other hand.
  • the diagnostic network comprises at least one switching element, wherein a first switching element is switched as a diagnostic switching element for initiating the functional test, so that preferably with a closed second switching element, preferably the shutdown, a complete electrical connection of the energy storage is done with the diagnostic network
  • the switch-off element is preferably connected to the electric switching devices in such a manner that, in the event of complete disconnection and / or suppression of the supply of the components, both the electrical switching devices and the switch-off element are actuated. In this way, reliable electrical energy transfer between the energy store and the components can be prevented, so that no energy loss occurs due to the diagnostic network.
  • Fig. 2 is a further schematic representation of an inventive
  • Fig. 3 is a further schematic representation of an inventive
  • a test system 1 according to the invention is schematically illustrated with reference to FIGS. 1 to 4 and a method according to the invention is illustrated.
  • the test system 1 according to the invention comprises at least one electrical energy store 2 for an electrical network 5 of a vehicle.
  • the energy storage device 2 serves for the electrical supply of at least one electrical component 4 of the network 5 that can be electrically connected to the energy storage device 2.
  • the electrical connection is preferably completely made only if a first electrical switching device 40a and a second electrical switching device 40b are closed, ie. H. a closed functional state of the first and second electrical switching device 40a, 40b is present.
  • a further electrical switching device 40c is shown, which is designed for example as a pre-charge contactor. All electrical switching devices 40 can be designed, for example, as a contactor and / or relay.
  • first electrical switching device 40a in a positive current path 6 of the network 5 and the second electrical switching device 40b in a negative current path 7 of the network 5 are arranged.
  • the arrangement shown is of course only as an example.
  • a diagnostic network 50 is further provided, which has a diagnostic switching element 21 as a switch for interrupting or closing the circuit of the diagnostic network 50.
  • other switching elements 20, such as a shut-off element 22 shown in FIG. 4 may be provided.
  • the diagnostic switching element 21 serves, for example, to initiate the functional test with the shut-off element 22 closed, and preferably the shut-off element 22 serves to completely prevent the flow of current from a first subarea of the diagnosis network 50 to a second subarea of the diagnostic network 50 (with the diagnostic switching element 21 open).
  • the first subarea having, for example, the test elements R1, R3 and R4
  • the second subarea comprising, for example, the test elements R2, R5 and R6 of the diagnostic network 50 is connected to the at least one electrical component 4.
  • the diagnostic network 50 includes a plurality of test elements 60, which are designed, for example, in each case as an impedance and / or high-impedance resistor.
  • a diagnostic test element 61 is provided in a diagnostic path 52 of the diagnostic network 50.
  • test paths 55 of the diagnostic network 50 further test elements 60 are further arranged.
  • a test element R2 is provided in a first test path 55a, which is designed specifically for a first electrical switching device 40a.
  • a test element R5 is provided in a second test path 55b, which is designed specifically for a second electrical switching device 40b.
  • a test element R6 is arranged in a further test path 55c, which is designed specifically for a further electrical switching device 40c.
  • the diagnosis network 50 has test elements 60 which are relevant for all electrical switching devices 40, as shown schematically by the test elements R1 and R3.
  • the Diagnoseprüfelement 61 which is also marked with R4 and also electrically with all zu testing switching devices 40 is connected, if the diagnostic switching element 21 is closed.
  • the position shown of the diagnosis switching element 21 is exemplary and it may of course also lie between the test elements R1 and R3.
  • a diagnostic potential difference 70 specific to a functional state of the electrical switching device 40 ie preferably the first electrical switching device 40a and the second electrical switching device 40b and the further electrical switching device 40c, is then carried out on the diagnostic path 52 of the diagnostic network 50, the diagnostic potential difference 70 is formed as part of a total potential difference 65 (eg, the operating voltage of the diagnostic network 50).
  • a diagnostic device 30 is preferably provided, wherein by a
  • Diagnostic potential difference measuring device 90 of the diagnostic device 30 the diagnostic potential difference 70 can be detected. All electrical switching devices 40 are driven, for example, such that in the normal (functional) functional state of the switching devices opening of the switching devices 40 takes place. Now, with the switching devices 40 in order and thus open, the detected diagnostic potential difference 70 (i.e., the detected voltage value) is in a range around V1.
  • the voltage V1 is:
  • V2 indicates the detected and / or known total potential difference 65, z. B. a voltage of at least one cell of the energy storage. This calculation can be performed, for example, by the diagnostic device 30 by digitally executable arithmetic operations. If it is determined that the detected diagnostic potential difference 70 is in the range around this value V1, for example by comparing and / or assigning the detected diagnostic potential difference 70 with the (eg first) comparison potential range, it can be assumed that all electrical switching devices 40 are functional. An area defined by the value V1 is thus z. B. the first comparison potential range. 2, a situation is shown in which the first electrical switching device 40a has a defective functional state. Unlike the second electrical switching device 40b, the first electrical switching device 40a is in the closed state (or sticks). While the diagnostic potential difference 70 of FIG. 1 is in a range around V1 as a first comparison potential range, now the diagnosis potential difference 70 is in a range W as a second comparison potential range.
  • the voltage VT in this case is:
  • the specific change of the diagnostic network 50 is shown schematically in FIG. 3 as an equivalent circuit diagram when the second electrical switching device 40b is in the defective functional state.
  • the diagnosis potential difference 70 due to the closed second switching device 40b is in a range around the voltage V1 ", which can be calculated as follows:

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé destiné à une vérification électrique de fonctionnement au niveau d'un véhicule avec au moins un accumulateur d'énergie électrique (2) et avec au moins un sous-ensemble électrique (4), reliable électriquement à l'accumulateur d'énergie (2), d'un réseau électrique (5) du véhicule et avec au moins un dispositif de commutation électrique (40) du réseau (5) pour l'interruption et/ou l'établissement de la liaison électrique entre l'accumulateur d'énergie (2) et le sous-ensemble électrique (4) par une opération de commutation du dispositif de commutation électrique (40). Ledit procédé de vérification de fonctionnement comprend les étapes suivantes : la commande définie de l'opération de commutation du dispositif de commutation électrique (40) ; la liaison électrique de l'accumulateur d'énergie (2) avec un réseau de diagnostic (50) du réseau (5), moyennant quoi une différence de potentiel totale (65) est délivrée par l'accumulateur d'énergie (2) pour faire fonctionner le réseau de diagnostic (50) ; la détection d'une différence de potentiel de diagnostic (70), spécifique à un état de fonctionnement du dispositif de commutation électrique (40), sur un chemin de diagnostic (52) du réseau de diagnostic (50), la différence de potentielle de diagnostic étant formée en tant que partie de la différence de potentiel totale (65) ; la comparaison de la différence de potentielle de diagnostic détectée (70) à au moins une plage prédéfinie de potentiels de comparaison, ce qui permet de déterminer un résultat de comparaison ; la détermination de l'état de fonctionnement du dispositif de commutation électrique (40) à l'aide du résultat de comparaison déterminé.
PCT/DE2017/100140 2016-03-04 2017-02-21 Procédé de vérification électrique de fonctionnement au niveau d'un véhicule Ceased WO2017148471A1 (fr)

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Application Number Priority Date Filing Date Title
DE112017001135.3T DE112017001135A5 (de) 2016-03-04 2017-02-21 Verfahren für eine elektrische funktionsprüfung bei einem fahrzeug

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016103989 2016-03-04
DE102016103989.6 2016-03-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110733348A (zh) * 2018-12-29 2020-01-31 长城汽车股份有限公司 一种电池管理的方法和装置
EP3910352A1 (fr) * 2020-05-12 2021-11-17 Kubota Corporation Unité de batterie
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CN110733348A (zh) * 2018-12-29 2020-01-31 长城汽车股份有限公司 一种电池管理的方法和装置
EP3832326A4 (fr) * 2019-01-11 2021-12-15 LG Chem, Ltd. Appareil de diagnostic de bloc-batterie
US11513139B2 (en) 2019-01-11 2022-11-29 Lg Energy Solution, Ltd. Battery pack diagnosis apparatus
EP3910352A1 (fr) * 2020-05-12 2021-11-17 Kubota Corporation Unité de batterie
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