CN107110906A - Method and voltage supply system for recognizing battery - Google Patents
Method and voltage supply system for recognizing battery Download PDFInfo
- Publication number
- CN107110906A CN107110906A CN201580062390.8A CN201580062390A CN107110906A CN 107110906 A CN107110906 A CN 107110906A CN 201580062390 A CN201580062390 A CN 201580062390A CN 107110906 A CN107110906 A CN 107110906A
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- China
- Prior art keywords
- voltage
- battery
- rectification
- supply system
- voltage supply
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- 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.)
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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
- G01R31/50—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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The present invention relates to a kind of method for being used to detect the battery (5) worked within the voltage supply system (1) of motor vehicle, wherein, alternating voltage is produced by generator (2), pass through alternating voltage described in rectifier (3) rectification, the voltage (6) after rectification is measured and analyzed by control unit (7), wherein, when the vibration characteristics of the voltage (6) after analyzing the rectification is in outside the margin of tolerance, the missing of battery (5) worked in the voltage supply system (1) is diagnosed as.The invention further relates to a kind of corresponding voltage supply system.
Description
Technical field
The present invention relates to a kind of method for being used to detect the battery worked within the voltage supply system of motor vehicle,
Wherein, by generator creating AC current pressure, by alternating voltage described in rectifier rectification, measured and analyzed by control unit
Voltage after rectification.The invention further relates to a kind of corresponding voltage supply system, especially the voltage supply system of motor vehicle.
The battery worked is referred in particular to, and the battery is functionally linked into voltage supply system.Such as conductance
The cable of line (electric lead leads to voltage supply system remainder from one at least two electrodes of battery) breaks
Road can cause the battery to be no longer able to for example play energy supply device within voltage supply system.
The application field of the present invention extends to such motor vehicle：The motor vehicle has for example to be run by drive device
Three-phase current generator.It is usually directed to such generator herein, otherwise the i.e. generator included rectifier, otherwise will
Rectifier is connected to after the generator, to produce the DC voltage that can be used by the different electric systems of vehicle.According to car
Depending on type, the DC voltage can for example, without being about only 12V or 24V or 48V.
In addition, during generator engine shut-off in other words, if necessary not only in order to start engine but also for electric part
Operation and be provided with battery, the battery is substantially in parallel with rectifier in other words with generator, and battery head
First to ensure lasting electric current supply.But for example because cable disconnection can cause, moved in actual effect from current loop
Except this battery.The battery is further placed on material or geometrically in the region of voltage supply system, but at that
In no longer work.This may for example cause, and electrically operated hand brake can be no longer activated after engine shut-off, or
Also it can no longer start the engine of motor vehicle, or the electric system can not be run during engine is closed.Therefore it is important
It is before engine shut-off, i.e., the missing for recognizing battery in other words to be diagnosed in ongoing operation.
Background technology
A kind of voltage supply system for motor vehicle is learnt by the A1 of US 2011/0260755, wherein, impulse generator
Signal is produced, presence or the missing with the battery of parallel operation of generator can be recognized by the analyzing and processing to the signal.No
Profit is, it is necessary to impulser and expensive analyzing and processing.
A kind of method for charging a battery in a non-contact manner is learnt by the A1 of FR 2 962 264, in the method
Also the presence of battery can be diagnosed.Disadvantageously technical cost and the realizability that lacks herein, especially motor-driven
In the case of car.
A kind of method that battery presence is determined in on-off circuit is learnt by the A of US 5 932 989, its mode is,
Voltage level is applied in the on-off circuit on one's own initiative.Disadvantageously, it is necessary to intervene the function of the on-off circuit.
The content of the invention
The task of the present invention is, proposes a kind of method, and reliably and the situation of voltage is not being influenceed by this method
The presence of battery of the lower determination in the voltage supply system of motor vehicle or missing.
Feature of the task from method combination claim 1 characteristic according to claim 1 preamble
To solve.Subsequent dependent claims give the advantageous extension scheme of the present invention.Introduce in claim 10 and be related to this
The voltage supply system of invention.
The present invention includes following technical teachings：When the vibration characteristics for analyzing voltage is in outside the margin of tolerance, diagnosis
For the missing of the battery worked in voltage supply system.
In addition the advantage of methods described can also be：Generally it is already provided with the prior art and voltage signal is divided
Analysis, therefore additional sensing device need not be installed.Measure the voltage of electric system with being furthermore possible to non-intrusion type, i.e., need not be such as
By changing voltage level or by sending voltage pulse come interfering system.
The preferred embodiment of methods described is set, and the vibration of the voltage after rectification is analyzed as vibration characteristics, the electricity
Pressing element has the amplitude on critical amplitudes threshold value.
In addition the advantage of methods described can also be：Just particularly simply can measure and analyze this vibration amplitude,
The voltage of i.e. described vibration.
Physical interconnection between the amplitude of oscillation of the raising on voltage signal after the missing of battery and rectification is thus
Produce：Mounted battery is applied to from the rectifier hair vibration damping especially when the battery is substantially in parallel with rectifier
On the signal gone out.Reduce the amplitude of the vibration on voltage signal in the case where battery is in parallel.If now for example from storage
One in battery contact lead to voltage supply system remainder cable disconnection, then this damping effect can be cancelled, whole
The amplitude of oscillation on voltage signal after stream can be improved, more than the amplitude threshold correspondingly selected.In order to for example from this analysis
Method filters out each voltage peak, for example, can analyze the average value or intermediate value of the amplitude more than one critical duration,
For example on the duration in the range of a few percent second.
The another of the present invention is preferred embodiment set, and the vibration of the voltage after rectification is analyzed as vibration characteristics,
The voltage has the frequency on critical frequencies threshold value.
In addition the advantage of methods described can also be：The Fourier transform energy for example implemented by means of described control unit
Enough it is easily performed frequency analysis.
Also resided in the physical interconnection occurred between high-frequency and battery missing：The battery vibration damping in parallel with rectifier
Ground is applied on the voltage signal produced there.Therefore, the high-frequency in the vibration on the voltage signal is by electric power storage
Pond decay is removed in other words.If for example losing electrical contact between the joint and remaining voltage supply device of battery, that
In frequency spectrum frequency can be measured on critical frequencies threshold value.
The improvement project of the present invention is set, and the measurement and analysis are interrupted during motor vehicle starting.
This starter for referring to activate motor vehicle is so that the explosive motor of driving motor vehicle and generator starts.In addition,
The advantage of the embodiment is, in respect of the presence made to battery or should generally lack in advance during the starter is activated
The reliable analysis of mistake becomes difficult voltage peak and atypical voltage change process.
The improvement project of the present invention is set, and when diagnosis is to battery missing, passes through being felt by driver for motor vehicle
The interface known sends signal that is can hearing and/or can seeing.
For example can be control lamp or speech message on the dash panel herein.The advantage of this improvement project is substantially
It is, driver knows the missing of battery before engine shut-off, because in the case of no maintenance measure, engine
Hereafter it may not start, and other functional faults for being for example related to EPB may also occur.
The improvement project of the embodiment is set, and the warning of operation EPB is sent by the signal.
In addition, such advantage can also be herein：The EPB exactly be for security critical
System, after engine shut-off, is not especially having manual manipulation in the case that battery is lacked in the EPB of electricity manipulation
In the case of possibility, it may be no longer able to use the security critical system.In addition to pure prompt facility, this warning also has
Have with security relationship it is great, meet the function of purpose.
Another improvement project of the present invention is set, and when diagnosis is stored to battery missing, is deposited and is used in electronic memory module
In the idagnostic logout for making maintenance work become simple.
Such advantage can also be herein：For example in workshop, attendant when repairing by reading this letter
Breath is supported.
Another preferred embodiment of the present invention is set, and maintains the voltage of current loop to supply when diagnosis to battery is lacked
Should, its mode in particular, in that, access auxiliary current supply battery, or its mode is to remain on generator.
Such advantage can also be herein：In longer time section such as at least up to activation such as parking
Before brake, electric current supply is maintained, for example its mode is, prevent driver from turning off generator or engine.
Brief description of the drawings
Be described in detail below together with the description of the preferred embodiment of the present invention with reference to two accompanying drawings improve the present invention enter one
Step measure.
Accompanying drawing is shown：
Fig. 1 is used for the voltage supply system for implementing the method for the present invention, and
Voltage signals of the Fig. 2 when removing battery.
Embodiment
According to Fig. 1, herein generating of the voltage supply system 1 of unshowned motor vehicle including producing three-phase alternating voltage
Machine 2, the rectifier 3, whole with this for being used to make alternating voltage be converted into the voltage after rectification 6 for being arranged in the generator outlet side
Flow the device joint 4 for battery 5 in parallel, and measurement and the control unit 7 for analyzing the voltage 6 after the rectification.Here,
In order that the voltage 6 after the rectification in the range of such as 15V is matched with the voltage water in the range of such as 5V of control unit 7
It is flat, the divider being made up of two resistors 8a, 8b is arranged between the two voltages.In addition, in order to eliminate signal jitter
Deamplification vibrates in other words, and capacitor 9 is in parallel with control unit 7.Here, rectifier 3, battery 5, divider and capacitor
9 have common ground connection 10.
Now, control unit 7 in ongoing operation, especially after the start of engine, it is special in different vibration
Property aspect analysis unshowned rectification herein after voltage 6, include the amplitude and frequency of vibration included in voltage 6.For
Ignore indivedual exceptional values, such as individual voltage peak value in the method for the invention, it is determined that duration on can obtain and
The average value or intermediate value for further analyzing such as voltage 6 are used as a part for the analysis.In addition, during engine start
Analysis is abandoned, because being likely to occur the vibration characteristics for hindering autotelic analysis in this stage.
In the case where there is cable disconnection 11, the frequency and/or amplitude of the vibration on voltage 6 after rectification may
It can change.Reason is that battery 5 is not only functionally cancelled as the energy supply device in the case of the shut-off of generator 2,
And the damping element and/or LPF element as voltage 6 are also cancelled.Here, damping behavior and/or low pass filtered baud
Property can for example be similar in the case of capacitor and produced by the capacitance characteristic of battery 5, such as can also lead to
The electric field produced by voltage 6 is crossed to produce with the reciprocation of the electrolyte in battery 5.As a result, there is cable disconnection
After 11, the amplitude of vibration is improved over key amplitude threshold value 12 (see Fig. 2), and occurs on critical frequencies threshold value 14
Frequency (see Fig. 3).
After for example this vibration characteristics is analyzed, sent for example with the police for operating EPB to driver
The signal of announcement because this especially in the case of the electronically controlled EPB turn off engine or generator after can
It can no longer can implement.Can also for example control unit 7, herein in unshowned electronic memory for example with journal entries
(Logbucheintrag) form storage record, and prevent the auxiliary electric power storage that generator is turned off or access is not shown here
Pond.
Fig. 2 shows a chart, provides voltage U above time t in the chart.It can be seen that the change of the voltage 6 after rectification
Change process, the change procedure is produced when there is cable disconnection 11 on time point 13, thus, effectively from voltage supply system 1
Remove battery 5.
Especially it would be recognized that the amplitude for the vibration being on the voltage after rectification 6 after there is cable disconnection 11 how
In on key amplitude threshold value 12, because the amplitude is no longer decayed by battery 5.The amplitude refers to voltage 6
Vibration is around the maximum deviation of (unillustrated herein) average value of the voltage, and the average value is generally by the hair in motor vehicle
Motor or the typically about 12V in the case where producing voltage by automobile storage battery.Amplitude threshold 12 can be symmetrically drawn in
Above and below average value, wherein, can symmetrically occur above and below average value afterwards and recognize amplitude threshold
12 exceed.
In this diagram the digital resolution of voltage 6 in other words sample rate be in the voltage frequency scope
It is interior, also show caused frequency and improve.It can find out, the voltage 6 not only has after time point 13 compared with before
Higher vibration, and with more vibrations in each time interval.
Fig. 3 shows the simple figure diagram for the spectrum analysis implemented by control unit 7.In the chart shown, voltage U
Amplitude provided on the frequency F of the voltage.Low-frequency spectra 15 under frequency threshold 14 is shown in broken lines.The low-frequency spectra
Corresponding to the frequency spectrum of the voltage 6 before there is cable disconnection 11.High frequency on frequency threshold 14, with oscillating component
Frequency spectrum 16 is shown in dash-dot lines.The high frequency spectrum 16 is produced after there is cable disconnection 11, because battery 5 is in electricity at that time
Do not recur low pass filter effect in pressure supply system 1.
The invention is not restricted to foregoing preferred embodiment.But also it can be considered that by the protection domain of following claims
The flexible program included together.Thus, for example can also abandon the matching of rectifier and control unit current potential or can
With different from implementing the matching by way of the rectifier being realized by two resistors.
Reference numerals list
1 voltage supply system
2 generators
3 rectifiers
4 joints
5 batteries
6 voltages
7 control units
8a, 8b resistor
9 capacitors
10 ground connection
11 cable disconnections
12 amplitude thresholds
13 time points
14 frequency thresholds
15 low-frequency spectras
16 high frequency spectrums
F frequencies
The t times
U voltages
Claims (10)
1. the method for detecting the battery (5) worked within the voltage supply system (1) of motor vehicle, wherein, pass through
Generator (2) produces alternating voltage, by alternating voltage described in rectifier (3) rectification, is measured and analyzed by control unit (7)
Voltage (6) after rectification,
Characterized in that, when the vibration characteristics of the voltage (6) after analyzing the rectification is in outside the margin of tolerance, being diagnosed as
The missing of the battery (5) worked in the voltage supply system (1).
2. according to the method described in claim 1, it is characterised in that the vibration of the voltage (6) after the rectification is special as vibration
Property it is analyzed, the voltage has the amplitude on key amplitude threshold value (12).
3. the method according to any one of the claims, it is characterised in that the vibration of the voltage (6) after the rectification
Analyzed as vibration characteristics, the voltage has the frequency on critical frequencies threshold value (14).
4. the method according to any one of the claims, it is characterised in that pass through during the motor vehicle starting
Described control unit (7) interrupts the measurement and analysis.
5. the method according to any one of the claims, it is characterised in that in diagnosis to the battery (5) missing
When, signal that is can hearing and/or can seeing is sent by the interface that can be perceived by driver of the motor vehicle.
6. method according to claim 5, it is characterised in that the police of operation EPB is sent by the signal
Accuse.
7. the method according to any one of the claims, it is characterised in that in diagnosis to the battery (5) missing
When, the idagnostic logout for making maintenance work become simple is deposited in electronic memory module.
8. the method according to any one of the claims, it is characterised in that in diagnosis to the battery (5) missing
When, maintain the voltage supply of the voltage supply system (1).
9. method according to claim 8, it is characterised in that maintain the voltage supply, its mode is to access auxiliary
Electric current supplies battery, and/or its mode is to remain on the generator (2).
10. the voltage supply system (1) of motor vehicle, including for producing the generator (2) of alternating voltage, being arranged in the generating
Machine outlet side is used to providing the rectifier (3) of the voltage after rectification (6), in parallel with the rectifier for battery (5)
Joint (4), and measurement and the control unit (7) for analyzing the voltage (6) after the rectification, it is characterised in that the control is single
First (7), which have, calculates code, to implement the method according to any one of claim 1-9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014116800.3A DE102014116800A1 (en) | 2014-11-17 | 2014-11-17 | Method for detecting a battery and power supply system |
| DE102014116800.3 | 2014-11-17 | ||
| PCT/EP2015/076498 WO2016079012A1 (en) | 2014-11-17 | 2015-11-13 | Method for detecting a battery, and voltage supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107110906A true CN107110906A (en) | 2017-08-29 |
Family
ID=54548159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580062390.8A Pending CN107110906A (en) | 2014-11-17 | 2015-11-13 | Method and voltage supply system for recognizing battery |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3221709A1 (en) |
| CN (1) | CN107110906A (en) |
| DE (1) | DE102014116800A1 (en) |
| WO (1) | WO2016079012A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016216845A1 (en) | 2016-09-06 | 2018-03-08 | Robert Bosch Gmbh | Device and method for detecting a missing electrical connection of an energy storage device with a power supply system, in particular an electrical system of a motor vehicle |
| DE102017218312A1 (en) * | 2017-10-13 | 2019-04-18 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for operating a motorcycle and motorcycle with such a device |
| FR3122292A1 (en) * | 2021-04-21 | 2022-10-28 | Valeo Equipements Electriques Moteur | Voltage regulation system of a power supply network |
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| US6420854B1 (en) * | 2001-05-17 | 2002-07-16 | Hubbell Incorporated | Battery detector |
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2014
- 2014-11-17 DE DE102014116800.3A patent/DE102014116800A1/en not_active Withdrawn
-
2015
- 2015-11-13 CN CN201580062390.8A patent/CN107110906A/en active Pending
- 2015-11-13 WO PCT/EP2015/076498 patent/WO2016079012A1/en active Application Filing
- 2015-11-13 EP EP15795148.4A patent/EP3221709A1/en not_active Withdrawn
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2016079012A1 (en) | 2016-05-26 |
| EP3221709A1 (en) | 2017-09-27 |
| DE102014116800A1 (en) | 2016-05-19 |
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Application publication date: 20170829 |