EP3510413A1 - Vorrichtung und verfahren zur erkennung einer fehlenden elektrischen verbindung eines energiespeichers mit einem energieversorgungssystem, insbesondere ein bordnetz eines kraftfahrzeugs - Google Patents
Vorrichtung und verfahren zur erkennung einer fehlenden elektrischen verbindung eines energiespeichers mit einem energieversorgungssystem, insbesondere ein bordnetz eines kraftfahrzeugsInfo
- Publication number
- EP3510413A1 EP3510413A1 EP17737262.0A EP17737262A EP3510413A1 EP 3510413 A1 EP3510413 A1 EP 3510413A1 EP 17737262 A EP17737262 A EP 17737262A EP 3510413 A1 EP3510413 A1 EP 3510413A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- supply system
- energy
- electrical connection
- current
- energy storage
- 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- Withdrawn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
Classifications
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- G01R31/54—Testing for continuity
Definitions
- the invention relates to a device and a method for detecting a missing electrical connection of an energy store with a
- Energy supply system in particular an electrical system of a motor vehicle, according to the preamble of the independent claims.
- DE 102004035513 A1 describes a method for detecting the connection between an energy store and a vehicle electrical system of a vehicle.
- the generator current and the battery current are detected and evaluated during a transitional period in load change, the compensation reaction of the battery. From the reaction is on the state of the compound
- DE 1020141 16800 A1 describes a method for detecting a battery acting within a power supply system of a motor vehicle. The voltage ripple is detected and evaluated. Exceeds the
- the invention is based on the object, the safety of detecting a missing electrical connection of an energy storage with a
- the device according to the invention and the method according to the invention according to the features of the independent claims have the advantage that with greater certainty a missing connection of one or more electrical energy storage in an electrical energy supply system, for example, the electrical system of a motor vehicle is detected.
- an electrical energy supply system for example, the electrical system of a motor vehicle
- This is of particular importance in view of the increasing degree of electrification and automation, in particular in motor vehicles, where the demands on the functional safety of the energy supply rise there.
- a lack of connection of an energy storage countermeasures must be taken on a higher system level in time to a safe state of the
- Maintain or restore overall system taking into account a possibly reduced performance. This is done by communicating the detected system state to the parent
- the scattering of the current in particular the current through the energy store or the energy storage system, is lower than in the fault-free case.
- Power supply system is closed when the missing electrical connection for a certain period of time, in particular in the order of 100ms to 120s, is detected. As a result, error detection and constant state changes can be avoided. In particular, certain lead
- Energy supply system is closed, is left when it is no longer concluded that a lack of electrical connection between the energy storage within a period of time.
- a so-called de-qualification time or a qualification time By introducing a so-called de-qualification time or a qualification time, a constant change of the detected state can be prevented.
- certain energy storage such as certain battery types have a safety shutdown, which is cyclically checked for functionality. In this case, the energy storage system is selectively separated from the energy supply system.
- this time can range from 100 ms to 30 s.
- this time can range from 100 ms to 30 s.
- a state, in particular a rest state, of the energy supply system and / or of the motor vehicle is taken into account for the further plausibility check of a missing electrical connection between the energy store and the energy supply system. So are usually in the resting state certain
- Power supply system is so excited that a change in the current is achieved, preferably by a value which is greater than the threshold for the scattering. Particularly preferably, the excitation of the
- At least one voltage is detected in the energy supply system or the energy store and from this a scattering of the voltage is determined and compared with a threshold value for plausibility checking of a missing electrical connection of the energy store with the energy supply system. This redundancy can further improve the reliability of the detection, especially in safety-relevant energy supply systems.
- Fig. 1 is a block diagram of a power supply system, a typical current waveform as a function of time and
- FIG. 1 shows by way of example a part of an electrical energy supply system 18.
- the energy supply system 18 comprises at least one energy source 10, at least one energy storage 12, at least one current detection 13, at least one consumer 14 and at least one processing unit 16.
- a voltage detection 15 may be provided.
- the energy source 10 is connected to the energy store 12.
- the consumer 14 is electrically connected to the power source 10 and also to the energy store 12.
- the flowing current I is determined by the current detection 13, which is arranged by way of example between the energy source 10 and the energy storage 12.
- the voltage detection 15 picks up the voltage drop across the energy storage 12 U.
- the processing unit 16 uses the current I detected by the current detection 13 for further evaluation. In addition, the processing unit 16 optionally evaluates the
- the processing unit 16 is connected to the current detection 13 and / or the voltage detection 15 for transmitting the measured values of the current I and / or the voltage U.
- Energy supply system 18 could be part of a vehicle electrical system
- the power source 10 may be a generator or a DC / DC converter.
- energy storage 12 for example, a battery or a capacitor or other energy storage could be used.
- a motor vehicle can be used as a consumer 14, a brake system, a steering system, a lighting system, a drive system or a comfort system or otherwise.
- the consumer 14 is a system relevant for driving safety.
- Figure 2 shows an example of the time course of the current I in the
- the connected loads 14 are not continuous and / or not constant
- Power requirements are no longer compensated and / or the power source 10 is not able to meet the increased power requirements. This can be one
- Power supply system 18 can be detected by the detection and evaluation of voltages U and / or currents I in the power supply system 18. If one of the energy storage 12 is disconnected from the power supply system 18, then the current I through the energy storage 12 changes to zero, the voltage U at the energy storage 12 assumes a constant voltage level U0 corresponding to the charge state.
- the voltage Uv in the energy supply system 18 shows an increase in the fluctuations Uvs due to the missing buffer function of the energy store 12.
- the method provides to continuously detect the current I of the energy store 12 and to derive therefrom a measure of the dispersion Is of the current I.
- the measure of the dispersion Is is compared with a threshold value IGs. If the measure of the scattering Is is smaller than the respective threshold value IGs, then the energy store 12 is electrically separated from the power supply system 18. If the scattering Is is greater than the threshold value IGs, then the energy store 12 is connected to the energy supply system 18. It is advantageous to select the threshold IGs similar to the uncertainty in the detection. This is typically in the range of 1 mA to 500 mA.
- the mean value Im of the current I is first calculated. This is preferably the average current of the energy store 12, preferably the average battery current.
- the determination of the mean value Im is advantageous for the subsequent determination of the dispersion Is of the current I as a measure of an expected value E (I) of the current I.
- the mean value Im is continuously updated or determined for a defined period of time.
- the usual methods for averaging can be used.
- the dispersion Is is subsequently calculated.
- the dispersion Is is a measure of the magnitude and / or frequency of a deviation of the measured values of the current I from the mean value Im of the current I. For example, as
- the threshold value IGs is preferably selected such that it lies in the region of the system-immanent scattering (variance, standard deviation, noise) of the sensor, here for example the current detection 13.
- the threshold value IGs is in the range of 2.48 mA 2 (variance) or at
- the threshold is IGs in
- step 107 a query is made as to whether the ignition of the vehicle is turned on. If this is not the case, one arrives at step 1 13. If the ignition of the vehicle is turned on, one arrives at the query 109.
- the query of the ignition is an example of a determination of the state of the vehicle or the energy supply system 18, whether the Vehicle is at rest. If the ignition is off, you will get to step 1 13. This will
- Error detection prevents when the vehicle is inactive.
- the following information can also be used to determine the state: key position, vehicle state, engine state, state of individual energy sources, state of individual consumers 14, state of safety-relevant systems. If such an inactive state is detected, either the
- the comparison of the absolute value Im of the current I with a threshold value IGm is performed. If the magnitude of the mean value Im of the current I is smaller than this threshold value IGm, step 1 1 1 follows. If the magnitude of the mean value Im of the current I is greater than or equal to the threshold value IGm, the step 13 is reached.
- the threshold value IGm is preferably selected as a function of an offset error of the sensor or of the current detection 13.
- the threshold value IGm is in the range from 1 mA to 500 mA, for example of the order of magnitude of 135 mA.
- step 1 1 1 it is assumed that the energy storage 12 is disconnected or a lack of electrical connection of the energy storage 12 is present. If, on the other hand, step 1 13 is reached, then it is assumed that the energy store 12 is not disconnected. In both cases, step 1 15 follows. In step 1 15, the qualification is carried out in the preceding steps
- Qualification time tq can be set according to the desired security requirements and could, for example, be on the order of 100 ms to 30 s, 60 s or 120 s.
- the state "energy storage 12 disconnected" must exist for the duration of tq, for example for 60 seconds, until this state is passed on as qualified, for example, to a higher-level system
- the dequalification time td could be on the order of 1 s.
- step 1 15 could only be executed optionally or completely omitted.
- the query 107 as well as the subsequent query 109 are components of an optional block 106, which is not absolutely necessary. Alternatively, only individual queries 107, 109 of this optional block 106 could also join query 105.
- An alternative embodiment provides for the determination (step 101) and / or the evaluation (query 109) of the measure for the mean value Im to be waived if a continuous excitation is ensured by the energy supply system 18.
- the excitation is greater than the threshold IGs for the degree of scattering Is.
- excitation is a control in
- Power supply system 18 and / or the consumer 14 understood that to a change of the current I lead.
- consumers 14 could be switched on briefly or continuously.
- changes in the setpoint values, in particular for the current for example, via the specification of corresponding voltage setpoints, be made.
- the change of the current I should be greater than the threshold value IGs.
- An alternative embodiment of the method provides for an excitation, which is greater than the threshold value IGs, to be requested by the energy supply system 18 if the measure of the dispersion Is is smaller than the threshold value of the scattering IGs. This excludes a misrecognition.
- a further embodiment provides for additionally detecting at least one voltage U in the energy supply system 18 or at the energy store 12 and to use this as a redundant channel for state recognition. Due to this redundancy, the reliability of the device or of the method, in particular in safety-relevant energy supply systems 18, can be improved.
- Energy supply system 18 can be carried out both in the energy source 10, a consumer 14 or the energy storage 12. From the detected voltage U, a measure of the scattering Us of the voltage U is derived.
- Measure for the deviation Us is compared with at least one, preferably a plurality of threshold values UGs. If the measure of the spread Us is smaller or larger (depending on the location of the measurement of the voltage U or where the interruption of the voltage U occurs) as a threshold value UGs, then the connection between the voltage detection 15 and at least one
- a safe state is a state that does not mean the presence of the energy store 12. For example, the superordinate system level, the absence of the energy storage 12 could be displayed. In particular during the initialization of the system, during the qualification time tq or in the case of an opposite state from a redundant method, the safe state could be assumed.
- the device and the method could, for example, in one
- Energy storage 12 (for example, the state of charge SOC, the
- Health status SOH Health status SOH according to a corresponding algorithm, which is based, for example, on a model of the energy store 12.
- the battery sensor thus already comprises a current detection 13 and / or a voltage detection 15 as well as the corresponding evaluation intelligence which is also used for the realization of the
- Processing unit 16 could be used.
- Method or device could also be integrated into other products or distributed to several products.
- energy storage 12 such as batteries, or generators, converters or energy management would be possible.
- Device and method are particularly suitable for use in a vehicle electrical system of a motor vehicle, in particular for detecting whether a battery is still connected to the electrical system.
- the use is not limited thereto, but rather may be any
- Power supply systems 18 are used.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016216845.2A DE102016216845A1 (de) | 2016-09-06 | 2016-09-06 | Vorrichtung und Verfahren zur Erkennung einer fehlenden elektrischen Verbindung eines Energiespeichers mit einem Energieversorgungssystem, insbesondere ein Bordnetz eines Kraftfahrzeugs |
PCT/EP2017/067104 WO2018046166A1 (de) | 2016-09-06 | 2017-07-07 | Vorrichtung und verfahren zur erkennung einer fehlenden elektrischen verbindung eines energiespeichers mit einem energieversorgungssystem, insbesondere ein bordnetz eines kraftfahrzeugs |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3510413A1 true EP3510413A1 (de) | 2019-07-17 |
Family
ID=59298459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17737262.0A Withdrawn EP3510413A1 (de) | 2016-09-06 | 2017-07-07 | Vorrichtung und verfahren zur erkennung einer fehlenden elektrischen verbindung eines energiespeichers mit einem energieversorgungssystem, insbesondere ein bordnetz eines kraftfahrzeugs |
Country Status (5)
Country | Link |
---|---|
US (1) | US11204381B2 (de) |
EP (1) | EP3510413A1 (de) |
CN (1) | CN109642921A (de) |
DE (1) | DE102016216845A1 (de) |
WO (1) | WO2018046166A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3637738B1 (de) * | 2016-01-22 | 2023-05-03 | The Raymond Corporation | Systeme und verfahren für ein materialhandhabungsfahrzeugnetzwerk |
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 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5809045A (en) | 1996-09-13 | 1998-09-15 | General Electric Company | Digital current differential system |
JP4086178B2 (ja) | 2002-05-24 | 2008-05-14 | 三菱電機株式会社 | 電動機制御装置の欠相検知方法 |
JP4578092B2 (ja) * | 2003-12-22 | 2010-11-10 | 三洋電機株式会社 | 空気調和装置 |
DE102004035513A1 (de) | 2004-07-22 | 2006-02-16 | Robert Bosch Gmbh | Verfahren zur Detektion der Verbindung zwischen Energiespeicher und dem Bordnetz eines Fahrzeugs |
JP4501873B2 (ja) * | 2006-02-27 | 2010-07-14 | トヨタ自動車株式会社 | 電源装置の異常判定装置及び異常判定方法 |
FR2960298B1 (fr) * | 2010-05-18 | 2013-03-29 | Valeo Equip Electr Moteur | Procede de detection de defaut de connexion pour capteur de batterie dans un vehicule |
FR2967784B1 (fr) * | 2010-11-23 | 2012-11-09 | Peugeot Citroen Automobiles Sa | Detection de la deconnexion d'une batterie |
US8922170B2 (en) * | 2010-12-24 | 2014-12-30 | Toyota Jidosha Kabushiki Kaisha | Electric power supply system and vehicle having the same mounted therein, and method of controlling electric power storage device |
FR2970609A1 (fr) * | 2011-01-18 | 2012-07-20 | Peugeot Citroen Automobiles Sa | Detection de la deconnexion d'une batterie |
DE102011083286A1 (de) | 2011-09-23 | 2013-03-28 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Versorgen eines Fahrzeugsystems eines Fahrzeugs mit Energie nach einem Energieversorgungsausfall im Fahrzeug |
US9335361B2 (en) * | 2013-06-04 | 2016-05-10 | GM Global Technology Operations LLC | Method and apparatus for monitoring a multi-phase electrical system on a vehicle |
FR3009869B1 (fr) * | 2013-08-22 | 2016-10-21 | Renault Sa | Procede de detection d'une deconnexion de batterie d'alimentation d'un vehicule automobile |
JP6179440B2 (ja) * | 2014-03-28 | 2017-08-16 | トヨタ自動車株式会社 | 車両制御装置 |
JP6123737B2 (ja) * | 2014-05-30 | 2017-05-10 | トヨタ自動車株式会社 | 蓄電システム |
DE102014116800A1 (de) | 2014-11-17 | 2016-05-19 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Verfahren zur Erkennung einer Batterie sowie Spannungsversorgungssystem |
DE102015209588B3 (de) * | 2015-05-26 | 2016-10-06 | Lisa Dräxlmaier GmbH | Vorrichtung und Verfahren zum Erkennen von Störungen in einem Bordnetz |
CN105048613B (zh) * | 2015-09-02 | 2018-10-16 | 泉州市海通电子设备有限公司 | 一种电动车智能充电器 |
DK3495655T3 (da) * | 2017-12-11 | 2020-09-28 | Sulzer & Schmid Laboratories Ag | Fremgangsmåde og system til testning af et lynafledningssystem i en vindturbine |
WO2019144222A1 (en) * | 2018-01-24 | 2019-08-01 | Clearpath Robotics Inc. | Systems and methods for maintaining vehicle state information |
-
2016
- 2016-09-06 DE DE102016216845.2A patent/DE102016216845A1/de active Pending
-
2017
- 2017-07-07 EP EP17737262.0A patent/EP3510413A1/de not_active Withdrawn
- 2017-07-07 US US16/323,550 patent/US11204381B2/en active Active
- 2017-07-07 WO PCT/EP2017/067104 patent/WO2018046166A1/de unknown
- 2017-07-07 CN CN201780054300.XA patent/CN109642921A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20190195930A1 (en) | 2019-06-27 |
US11204381B2 (en) | 2021-12-21 |
CN109642921A (zh) | 2019-04-16 |
WO2018046166A1 (de) | 2018-03-15 |
DE102016216845A1 (de) | 2018-03-08 |
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