CN106154079A - For the method monitoring onboard power system - Google Patents
For the method monitoring onboard power system Download PDFInfo
- Publication number
- CN106154079A CN106154079A CN201610312213.7A CN201610312213A CN106154079A CN 106154079 A CN106154079 A CN 106154079A CN 201610312213 A CN201610312213 A CN 201610312213A CN 106154079 A CN106154079 A CN 106154079A
- Authority
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- China
- Prior art keywords
- power system
- onboard power
- fault
- parts
- voltage trend
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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
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
-
- 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
- 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
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
-
- 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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- 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
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
-
- 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
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- 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
- G01R31/40—Testing power supplies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Secondary Cells (AREA)
Abstract
The method and apparatus proposing a kind of onboard power system (10) for monitoring with multiple parts (18), wherein detection voltage move towards and utilizes diagnosis unit (22) to be estimated in the described onboard power system (10), and identify in these parts (18) according to described assessment which be damage.
Description
Technical field
The present invention relates to a kind of for the method monitoring the onboard power system in onboard power system (Bordnetz), especially motor vehicles, and the present invention relates to a kind of apparatus for carrying out the method.
Background technology
Onboard power system, also referred to as energy onboard power system, mean the overall of all electric parts in motor vehicles.The parts of onboard power system for example, electromotor, energy accumulator, bus system, executor, sensor, controller, wiring and display element.Owing to the unrestricted functional performance of onboard power system is the main prerequisites of motor vehicles runnability, so proposing, onboard power system is monitored, so as to identify fault in time and be furthermore possible to start suitable counter-measure in time.
Onboard power system has supplies the task with electric energy to electric consumption device.It should be noted that the stopping of energy supply may cause the appearance of safety critical state, because customer is in not state of activation such as the brake booster of the most such as electricity.
In order to identify described stopping and making to be converted to safe condition in time and be possibly realized, onboard power system is taked different measures to be diagnosed to be unit failure in onboard power system, that be such as related to electromotor or battery.
Exist in dynamo governor different diagnostic measures in order to: identify the short circuit of the fault in excitation path (Erregerpfad) such as such as field output stage (Feldendstufe)；And the fault in identification commutator.In addition battery sensor also monitors the state of battery.This monitoring is such as implemented according to the undulatory property (Welligkeit) of onboard power system voltage.The diagnosis of the most different mainly dispersions (dezentral) performs in component-level aspect.
In document DE 10 2,006 019 573 A1, describe a kind of method for monitoring onboard power system, the most periodically switch on and off the customer in onboard power system, and the voltage trend recording and assessing in onboard power system.Method described in the publication indicates a kind of periodically measuring method.Customer to be measured is had by customer manipulation portion accordingly with given switching on and off with known frequency at this.Meanwhile the voltage in onboard power system moves towards the voltage trend on such as binding post, the voltage trend of battery can be recorded in the lump.The surveying record recorded the most such as by high pass filter to eliminate its DC voltage component, and be for further processing the most on the microprocessor.
Thus describe a kind of method in the publication, utilize the method advantageously to check the customer in onboard power system, and the most advantageously check the passive parts in onboard power system.Additionally must intervene in operation and switch on and off customer to be checked.The method makes to check whether studied customer reality is damaged to as probability.The fault of miscellaneous part is not detected.
Summary of the invention
In this context, method and the one device according to claim 9 of a kind of feature with claim 1 are described.Embodiment draws by dependent claims with by description.
Utilize the method introduced, make according to central diagnostic unit the monitoring of all parts to onboard power system be possibly realized, so that not only passive (passiv) but also monitoring to active (aktiv) parts are possibly realized.Here, active parts mean such as electromotor or battery.Need not choose parts and it is switched on and off with regard to this, and because of without intervening in operation.This method is provided that, move towards to be estimated in middle position recording voltage trend and to this voltage in the case of operating in nonintervention, and subsequently one of parts of onboard power system, the most such as fault or damage to the active parts of onboard power system are detected on the basis of this assessment.Thus identifying which in described parts is to damage or out of order.It also is able to identify type or the seriousness of this fault equally.Thus also be able to identify the stopping of one of parts or imminent stopping.
If multiple parts are to damage, then this point too can be identified in the range of assessment.The parts of this damage enable in particular to or these parts damaged enable in particular to do not have in advance these parts must to be chosen and intervene operating in the case of distinguished.
Utilize the method it can be avoided that or identify in advance the customer to safety critical energy supply uncontrolled wholly off.Described central diagnostic unit can be implemented as the extension of battery sensor now, thus it is in addition to can recognize that battery failures, the electromotor in onboard power system and the fault of other parts can also be identified, such as such as dc voltage changer or the fault of DC/DC transducer.
The advantage of employing center diagnosis unit is, it is possible to detect the fault of all parts.So that fault can mutually be made a distinction；The probability making error diagnosis reduces.Additionally can also make up the diagnosis in single parts omit and can make the most to be certified as being believable in diagnosis present on component-level aspect.For the extension of the battery sensor existed, this point may neutrally (or structure space stays out of ground, bauraumneutral) realize by structure space.
For the method introduced, it is provided that in design, voltage pulsation is such as monitored on battery by the middle position of onboard power system.The voltage of the record in central diagnostic unit is compared previously in the voltage trend asked for when charging to (Einpr gung) different error image in design.Turning also now to Fig. 2, the most illustratively give choosing of a kind of different error image to electromotor.Described comparison can be carried out by pattern recognition.Described pattern recognition also is able to be implemented by different alternative systems or by being simplified processing further of signal.The most such as can use Kalman filter, fast Fourier transform (FFT:Fast Fourier Transform) etc..Owing to the error image of all onboard power system parts is known in central unit, then can make diagnosis reliably.
The method introduced and the device explained some embodiments the most in these embodiments there is a series of advantage.Therefore, the fault up to the present itself also can not being diagnosed by onboard power system parts then can be identified by CSRC equipment or central diagnostic unit.In design, carry out the communication of fault and the response of fault.
The method makes the monitoring improved in onboard power system and obtains higher ASIL classification and be possibly realized the most when necessary.By this way can by based on new driving function such as the highest automatization drive or new safety critical customer, security requirement and the reliability requirement of the increase of onboard power system are taken into account.
Other advantages of the present invention and design are drawn by specification and drawings.
It should be understood that previously described and have feature to be explained the most not only can use in the combination provided accordingly further below, and also be able in other combination use or can be used alone.
Accompanying drawing explanation
Fig. 1 shows that the embodiment of a kind of onboard power system is in order to perform introduced method.
Fig. 2 shows the association between the error image of onboard power system voltage and different electromotors in four width figures.
It is schematically depicted in the drawings the present invention according to embodiment, and has been described in detail referring to the drawings.
Detailed description of the invention
Figure 1 illustrates a kind of onboard power system, use reference 10 labelling that onboard power system is total.This onboard power system includes electromotor 12, battery 14, starter 16 and multiple parts 18, in this case, here it is shown that four customers therein.
On middle position, battery sensor 20, the trend of the voltage in this battery sensor monitoring onboard power system 10 is arranged for battery 14.At this especially monitoring voltage undulatory property and by this undulatory property such as with previously asked for voltage trend compare.Further it is shown that a kind of central diagnostic unit 22, the installation site of this central diagnostic unit is pure exemplary in this embodiment.Described central diagnostic unit also is able to be on other position.
In fig. 2, showing different voltage trends in four width figures, these voltage trend can be recorded by the sensor used.
Showing that the first voltage moves towards 32 in the first figure 30, this first voltage trend shows the trend in a kind of regular cycle, and the trend in this regular cycle indicates a kind of trouble-free operation.
Describing the second voltage in second graph 40 and move towards 42, this second voltage trend indicates a kind of fault.Can recognize that the interruption in stage in this case.Show that a kind of asymmetrical voltage moves towards 42 by described interruption, because electromotor is no longer able in all of stage power supply.
3rd figure 50 shows that tertiary voltage moves towards 52, and this tertiary voltage trend is capable of identify that equally and is out of order.Can recognize that the short circuit on diode in this case.The feature of the diode of short circuit forms voltage platform (Spannungsplateau), because at some stage electromotive force owing to short circuit is by clamp (klammern) to B+-current potential or ground connection.
4th figure 60 shows that the 4th voltage moves towards 62, and the 4th voltage trend can recognize that the interruption of diode.
That is the type depending on fault depends on which parts and the order of severity of fault being related to, and is then able to take suitable counter-measure.This fault is likely to cause the infringement of the function of associated components in principle, or even results in the stopping of parts.It also is able to the fault being possible to cause quickly to stop identified or the fault causing quickly occurring stopping in all cases if desired.
Therefore onboard power system can be converted to safe state under suitable counter-measure.Such as it also is able to consider that how and this fault occurred in which time period for frequency that fault occurs.Therefore it is likely to can recognize that the infringement of the function caused due to specific external environment condition and specific ruuning situation.
Claims (10)
1. the method being used for monitoring onboard power system (10), this onboard power system has multiple parts (18), wherein detection voltage trend (32,42,52,62) utilize diagnosis unit (22) to be estimated in the described onboard power system (10), and identify in these parts (18) according to described assessment which be to damage.
The most in accordance with the method for claim 1, wherein to detected draw voltage trend (32,42,52,62) carry out frequency analysis.
3., according to the method described in claim 1 or 2, wherein compared detecting voltage trend (32,42,52,62) drawn with predetermined voltage trend (32,42,52,62).
The most in accordance with the method for claim 3, wherein detected voltage trend (32,42,52,62) drawn to compare by means of pattern recognition.
5., according to the method according to any one of Claims 1-4, wherein in described onboard power system (10), the fault of active parts is identified.
The most in accordance with the method for claim 5, wherein the fault of electromotor (12) is identified.
The most in accordance with the method for claim 5, wherein the fault of battery (14) is identified.
8., according to the method according to any one of claim 1 to 7, described onboard power system (10) is converted to safe state by the type wherein depending on fault.
9. it is particularly useful for performing according to the method according to any one of claim 1 to 8, the device of onboard power system (10) for monitoring with multiple parts (18), wherein said device is included in described onboard power system (10) and is used for detecting the sensor of voltage trend (32,42,52,62) and for assessing the diagnosis unit (22) detect voltage trend (32,42,52,62) drawn, wherein said assessment be such that can recognize that in described parts (18) which be damage.
10., according to the device described in claim 9, described device has battery sensor (20) as sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015208927.4A DE102015208927A1 (en) | 2015-05-13 | 2015-05-13 | Method for monitoring a vehicle electrical system |
| DE102015208927.4 | 2015-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106154079A true CN106154079A (en) | 2016-11-23 |
Family
ID=57208882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610312213.7A Pending CN106154079A (en) | 2015-05-13 | 2016-05-12 | For the method monitoring onboard power system |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20160134551A (en) |
| CN (1) | CN106154079A (en) |
| DE (1) | DE102015208927A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190120908A1 (en) * | 2017-10-25 | 2019-04-25 | Samsung Electronics Co., Ltd. | Apparatus and methods for identifying anomaly(ies) in re-chargeable battery of equipment and connected component(s) |
| DE102021208116A1 (en) | 2021-07-28 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method and device for detecting an event in an on-board network, in particular of a motor vehicle |
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| CN111169329A (en) * | 2019-12-19 | 2020-05-19 | 联创汽车电子有限公司 | Fuel cell control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006019573A1 (en) | 2006-04-27 | 2007-10-31 | Daimlerchrysler Ag | Motor vehicle main power supply`s load testing method, involves storing signal energies at output of Goertzel filter and/or Goertzel algorithm, and testing energies with respect to its gradient and end value on reaching minimum values |
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2015
- 2015-05-13 DE DE102015208927.4A patent/DE102015208927A1/en active Pending
-
2016
- 2016-05-12 KR KR1020160058344A patent/KR20160134551A/en unknown
- 2016-05-12 CN CN201610312213.7A patent/CN106154079A/en active Pending
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| JPS6453045A (en) * | 1987-03-03 | 1989-03-01 | Bosch Gmbh Robert | Device for inspecting at least two electric load of automobile |
| DE10250520A1 (en) * | 2002-10-29 | 2004-05-19 | Cremer, Christian, Dipl.-Ing. | Fuel cell stack monitoring device, especially for automotive use, whereby impedances are switched together and then it is determined if a measured voltage value lies within a possible value range |
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| CN1912930A (en) * | 2006-08-24 | 2007-02-14 | 上海地铁运营有限公司 | Subsway rail car pulling circuit fault diagnosis system based on wave form identification |
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| CN103792493A (en) * | 2014-01-22 | 2014-05-14 | 浙江精雷电器有限公司 | Power supply protection device for small electric vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20160134551A (en) | 2016-11-23 |
| DE102015208927A1 (en) | 2016-11-17 |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161123 |
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| RJ01 | Rejection of invention patent application after publication |