CN107843841A - Sensor arrangement and battery monitoring controller for monitoring the current in the current rail of an electrically drivable driving device - Google Patents
Sensor arrangement and battery monitoring controller for monitoring the current in the current rail of an electrically drivable driving device Download PDFInfo
- Publication number
- CN107843841A CN107843841A CN201710830475.7A CN201710830475A CN107843841A CN 107843841 A CN107843841 A CN 107843841A CN 201710830475 A CN201710830475 A CN 201710830475A CN 107843841 A CN107843841 A CN 107843841A
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- current
- construction group
- sensor
- sensor construction
- supervisory controller
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/207—Constructional details independent of the type of device used
-
- 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
Abstract
The invention refers to a sensor assembly, a battery monitoring controller, an assembly and a forward device. The sensor arrangement is used to monitor the current flowing through the current rail of the electrically drivable driving device. The hall sensor and the shunt are fixed to one another by means of a fixing device and transmit an analog voltage signal or a pulse-width-modulated signal to the battery monitoring controller. The battery monitoring controller includes: the device comprises an analysis processing unit, an analog-digital converter, a digital input end, a first input end and a second input end, wherein the first input end is used for receiving an analog voltage signal and conducting the analog voltage signal to the analog-digital converter, the second input end is used for receiving a pulse width modulation signal and conducting the pulse width modulation signal to the digital input end, and the analysis processing unit is used for receiving an output signal of the analog-digital converter and the pulse width modulation signal and calculating current according to the two signals.
Description
Technical field
The present invention relates to a kind of cell supervisory controller, a kind of sensor construction group, one kind include sensor construction group and
The component of cell supervisory controller and a kind of advance equipment, can be supervised simply and at low cost by the sensor construction group
Control can be in the current rail of electrically driven (operated) advance equipment electric current.
Background technology
In high volt (HV) battery system in future, height volt current measurement is related to OBD II, i.e. current measurement value is necessary
Reasonableness test is carried out with enough precision.Equally provided from the classification according to ASIL C for the work(in following battery system
The ISO 26262 of energy security.The battery system related to OBD II well known in the art, the battery system by based on
The measuring method of current divider and by based on the measuring method of Hall effect height lie prostrate electric current in terms of measure.It is also known that
Be Isabellenh ü tte companies combined type current divider/Hall sensor, the design of the combined type current divider/Hall sensor
There is EBI (LIN) (referring to network addresshttps://www.google.de/urlSa=t＆rct=j＆q=＆esrc=s＆ Source=web＆cd=1＆ved=0ahUKEwjN4_CEw4HOAhUmOsAKHU69AmYQFgg eMAA＆url=http% 3A%2F%2Fwww.isabellenhuette.de%2Fuploads%2Fmedia%2FPM_Is abellenh%25C3% 25BCtte_ICB-M_DEU.docx＆usg=AFQjCNE01bnLR4zMXNmt8Ulv463qd ySuKQ＆cad=rja).Also
Know the system design with two (identical) Hall sensors.
System with two separated sensors is bothersome in installation, but is integrated into vehicle by EBI
In vehicle electronic circuit, integral structure group means the limitation and high manufacturing cost in terms of the system integration.In addition, use two
Individual Hall sensor shows following shortcoming：The precision deficiency of current measurement.
The A1 of EP 2 942 631 disclose the hybrid current sense device assembly with microprocessor.Hall sensor and point
Stream device is provided for the current measurement of redundancy.Microprocessor electrically connects with current divider and is provided for measuring the electricity in current rail
Stream, the electric current flow through the conductor for being conducted through structure group.
The A1 of DE 10 2,011 082 937 disclose a kind of battery management system, in the battery management system, in controller
High volt side and in two microcontrollers of the low volt side of controller in redundancy to battery cell monitoring loop (CSC) number
According to being analyzed and processed and be compared to each other.(low volt side) microcontroller is connected and second with Hall sensor therefore, first
(height volt side) microcontroller is connected with current divider (resistance).
Tested so far：The reasonableness test to current measurement is realized on the basis of the solution based on software.
However, required precision be unsatisfactory for according to OBD II license either plus office of Li Fuliya federations (CARB) permit requirement or
Say the requirement for being unsatisfactory for implementing according to ASIL C.CARB requires the clear and definite diagnosis of all actuators and sensor.Relatively low essence
Degree may also limit the electric effective range of permission.
The content of the invention
The present invention task be：Eliminate or mitigate the shortcomings that occurring in the prior art.
According to the present invention, above identifying for task passes through for monitor can be in the current rail of electrically driven (operated) advance equipment
The sensor construction group of electric current solves.The current rail for example can be to establish the current rail for the electric current for leading to traction machine.Pass
Sensor structure group includes Hall sensor and current divider, for measuring electric current.Current divider has the first output end, and current divider can
Output parameter (such as analog voltage signal) corresponding with electric current is exported by first output end.Hall sensor has second
Output end, second output end can export the signal of such as pulse width-modulated corresponding with electric current.It is provided with fixator
Part, for Hall sensor and current divider to be fixed on into current rail.Herein, especially limit with electric current track surface, in advance
The distance of restriction.That is, the sensor construction group of configuration can be by two different current senses of measuring principle as described above
Device measures electric current and independently of each other output current signal.In the sensor construction group, locate at least without in order to analyze
Manage the output signal of current divider and Hall sensor and analysis and processing unit is set.Therefore, the sensor construction group can be with non-
Often at low cost and steadily configuration.Therefore, the sensor construction group can be arranged in the following position in advance equipment
On, these positions are not suitable for component well known in the prior art by installing space or in vibrotechnique for determining
It is problematic for the sensor construction group known.
Dependent claims show the preferable extended mode of the present invention.
Hall sensor, current divider and immobilising device can be arranged on housing or in the housing, the housing is outside it
There is the first output end, the second output end and immobilising device on side.First output end and the second output end can be configured as plug
Contact.Mechanical organ can be especially set, casual released for prevent in the first output end and the second output end.
This, the housing for example plays the function of the spacing keeper between Hall sensor and current rail.
According to the second aspect of the invention, propose that cell supervisory controller (is also referred to as battery management control in the prior art
Device processed, BMC), the cell supervisory controller includes analysis and processing unit (such as microcontroller), analog-digital converter, numeral
Input, first input end and the second input.Cell supervisory controller is provided for and according to described first party of the present invention
The sensor construction group collective effect in face：First input end is provided for receiving analog voltage signal (such as according to described sheet
The analog voltage signal of the current divider of the sensor construction group of invention first aspect) and it is transmitted to Analog-digital Converter
Device.Second input is provided for the signal of pulse width-modulated (such as the biography according to described first aspect present invention
The signal of the pulse width-modulated of the Hall sensor of sensor structure group) received and analyzed and processed.It is being achieved in that, superfluous
Remaining current value represents the electric current in current rail.Analysis and processing unit is especially provided for being produced uniquely according to both signals
Current value and for this preferably in advance successfully to both signals carry out reasonableness test.Therefore, with the prior art
The cell supervisory controller known is compared, provided with least one (in addition) first input end and (in addition) second input, it
Combined with according to sensor of the invention structure group make it possible to realize according to the present invention current measurement.The electricity of prior art
Cell monitoring controller generally has the analog-digital converter not utilized so far, and the analog-digital converter can according to the present invention
For determining electric current.It is considerably lower by making the reception of measurement parameter become cost according to sensor of the invention structure group,
And less change and cost is only caused to increase (such as by the cell supervisory controller according to the present invention, the processing of measurement parameter
If fruit has).
Electricity between analog-digital converter and digital input end can be provided according to the cell supervisory controller of the present invention
Stream isolation, to isolate the sometimes high electrical potential difference of Hall sensor and current divider between each other.In the corresponding way, can also
Potential isolation or electricity are set between analog-digital converter, digital input end and another aspect analysis and processing unit on the one hand
Insulation.If a current sensor in the current sensor is run in low potential, then one in the input
Input can be just enough on being galvanically isolated for analysis and processing unit.
Between analog-digital converter and analysis and processing unit be galvanically isolated for example can by photoelectrical coupler and/or
By transmitter/ transformer is carried out.
According to the third aspect of the invention we it is also proposed that according to described second aspect of the present invention according to battery of the invention
Supervisory control device and according to the combination between the sensor construction group of described first aspect present invention, the battery cell monitoring control
Device and sensor construction group can be linked together as following.First output end of sensor construction group can supervise with battery
Control first input end (such as electric current) connection in information technology of controller.Second output end of sensor construction group can be with
The second input with cell monitors in information technology (such as electric current, optically or similarly) is connected.Here, first
Input and the first output end or the second input and the second output end are respectively for example by the socket connection structure insured
It is connected with each other.The socket connection structure can be configured as it is protected by seal, against undesirable foreign matter and/or liquid
The intrusion of body.
According to the fourth aspect of the invention, a kind of advance equipment is proposed, the advance equipment for example can electric drive.The advance is set
It is standby especially to include high volt (HV) vehicle electronic circuit.The advance equipment includes the sensor knot according to described first aspect present invention
Structure group；And alternatively or additionally include the cell supervisory controller according to described second aspect of the present invention；And substitute
Ground is additionally included according to the component of described third aspect present invention.By this way, advance equipment is arranged for carrying out
Meet OBD-II current measurement with analyzing and processing.That is, the cost of the vehicle electronic circuit of advance equipment can be realized according to the present invention
Low modification, by the modification, two current sensors for having diagnosis capability meet OBD-II requirement.Electricity can especially be used
The following analog/digital converter of cell monitoring controller is used for current measurement, and the analog/digital converter leads in the prior art
Cross cell supervisory controller and be also used for high volt voltage measurement and protection diagnosis.Cell supervisory controller can be used if necessary
, idle so far passage.Additional electrical interface in battery management controller, information technology can cause battery cell monitoring control
Device processed, original in the prior art existing analog/digital converter or digital input end can be used in hall sensing
The output signal of device and current divider is analyzed and processed according to of the invention and generally reduces hardware cost and bus is led to
Letter.Because compared with the microcontroller of cell supervisory controller, current divider has corresponding potential sometimes in height lies prostrate vehicle electronic circuit
High volt voltage, so being galvanically isolated between the analysis processing device of cell supervisory controller is necessary.
Brief description of the drawings
Embodiments of the invention are explained below with reference to accompanying drawing.It is shown in which：
Fig. 1 according to the present invention advance equipment embodiment schematic representation；
Fig. 2 is according to the exploded view of the embodiment of sensor of the invention structure group；
The three-dimensional side view of the embodiment shown in figure 2 of Fig. 3 sensor construction groups；With
The schematical diagram of the components of Fig. 4 mono-, the component are included according to sensor of the invention structure group
Embodiment with according to the present invention cell supervisory controller embodiment.
Embodiment
Fig. 1 shows embodiment of the car 10 as the advance equipment according to the present invention, and the car can be by the He of motor 2
20 pure electric drive of battery, the motor, which is used as, draws machine, and energy accumulator of the battery as electrochemistry.It is electronic
Machine 2 and battery 20 are electrically connected to each other by current rail 4.In order to measure the electric current flowed in current rail, arranged in current rail
According to the sensor construction group 1 with the first output end 5 and the second output end 6 of the present invention.For transmission information, electric lead from
Output end 5,6 leads to the input 14 of first input end 13 and second of the cell supervisory controller 16 according to the present invention.I.e., relatively
In prior art, the analyzing and processing of sensor signal is arranged in cell supervisory controller 16, without being provided in sensor knot
In structure group 1.Bus communication between sensor construction group 1 and cell supervisory controller 16 also at least is not provided for transmitting closing
The sensing data of the measurement of electric current in current rail.
Fig. 2 shows that (also referred to as current sensor front end, English is Current- according to sensor of the invention structure group 1
Sensor-Frontend, CSF) exploded view, the sensor construction group can measure by current divider 4 and Hall sensor 3
The electric current I of current divider 4 is flowed through, the Hall sensor includes lid 3a and circuit board 3b.There is Hall in circuit board 3b arranged beneaths
The housing bottom 3c of sensor 3.Current divider 4 has hole 4a, 4b respectively in its distal portion, and current divider can be anchored by the hole
In current rail or in current rail.Sensor construction group 1 does not include analysis and processing unit.
Fig. 3 shows the three-dimensional side view of the sensor construction group 1 of the embodiment according to Fig. 2.In Hall sensor 3
Interface 8 is disposed with the downside of the 3c of housing bottom, it is defeated that the housing of the interface from Hall sensor 3 is drawn out to the first output end 5 and second
Go out in end 6 (see Fig. 1).
Fig. 4 shows component according to an embodiment of the invention, and the embodiment includes sensor construction group 1 and in battery management
The cell supervisory controller 16 of controller (BMC) form.Signal output part 5,6 by electric lead respectively with cell supervisory controller
16 input 13,14 connects.First input end 13 is connected with analog/digital converter 11 in the communication technology.Second input
End 14 is digitally by for determining that the edge triggered flip flop 12 of duty-cycle further handles pwm signal.Because pass through the second output
End 6 measurement signals send, Hall sensor 3 be in low volt potential, so edge triggered flip flop 12 can directly with as divide
Connect with analysing the input electric current of the microcontroller 9 of processing unit.And current divider 4 by the first output end 5 is transmitted to first
The measurement signal of input 13 is in high volt potential so that analog/digital converter 11 is also at high volt potential.Therefore, simulate/
Digital quantizer 11 and electricly insulate relative to the second measuring route electric current.Current isolating device 15 be arranged in the first simulation/
Between digital quantizer 11 and microcontroller 9, to provide being galvanically isolated for high volt potential and low volt potential.Microcontroller 9 can
So that the measurement result of current divider 4 and Hall sensor (being not shown in Fig. 4) mutually to be carried out to reasonableness test and is asked for
Electric current obtained according to two sensor values, common is further to use.
Even if it is described in detail by according to aspects of the present invention and favorably according to the embodiment illustrated with reference to accompanying drawing
Embodiment, but for professional and technical personnel, the remodeling of the feature of the embodiment shown and combination be it is possible, without
Depart from the scope of the present invention, protection scope of the present invention is defined by the appended claims.
Reference numerals list
1 sensor construction group
2 motors
3 Hall sensors
4 current dividers
5 first output ends
6 second output ends
9 microcontrollers
10 cars
11 first analog-digital converters
12 edge triggered flip flops
13 first input ends
14 second inputs
15 photoelectrical couplers
16 cell supervisory controllers, BMC
I electric currents
Claims (9)
1. a kind of sensor construction group (1) for being used to monitor electric current (I) that can be in the current rail of electrically driven (operated) advance equipment, should
Sensor construction group includes：
- Hall sensor (3),
- current divider (4),
- the first output end (5),
- the second output end (6),
- immobilising device, wherein,
- the Hall sensor (3) is provided for being fixed on the current divider (4) and measuring by the immobilising device
The electric current (I), wherein,
- the current divider (4) be provided for by first output end (5) export it is corresponding with the electric current (I) simulate it is electric
Signal is pressed, and
- the Hall sensor is provided for exporting, passages through which vital energy circulates corresponding with the electric current (I) by second output end (6)
Rush the signal of width modulated.
2. according to the sensor construction group described in claim 1, in addition to：
- housing (3a, 3c), is disposed with the outside of the housing：
- first output end (5),
- second output end (6) and
- the immobilising device.
3. according to the sensor construction group any one of preceding claims, the sensor construction group does not include microcontroller
Device.
4. a kind of cell supervisory controller (16), including：
- analysis and processing unit (9),
- analog-digital converter (11),
- digital input end (12),
- first input end (13) and
- the second input (14), wherein,
- the first input end (13) is provided for receiving analog voltage signal and is transmitted to the first Analog-digital Converter
On device (11),
- second input (14) is provided for receiving the signal of pulse width-modulated and is transmitted to the analysis
On processing unit (9) and/or the digital input end (12), wherein,
- the analysis and processing unit (9) is provided for receiving output signal and the reception of the analog-digital converter (11)
Data signal and ask for electric current (I) according to both signals.
5. according to the cell supervisory controller described in claim 4, wherein, the first input end (13) and/or described second
Input (14) is galvanically isolated with the analysis and processing unit (9).
6. according to the cell supervisory controller described in claim 5, wherein, it is described to be galvanically isolated
- by photoelectrical coupler (15) and/or
- by transmitter
Establish.
7. one kind includes the component of sensor construction group (1) and cell supervisory controller (16), the sensor construction group be by
According to the sensor construction group any one of Claim 1-3, the cell supervisory controller is according to preceding claims
Cell supervisory controller any one of 4 to 6.
8. according to the component described in claim 7, wherein,
The first output end (5) of-sensor construction group (1) and the first input end of the cell supervisory controller (16)
(13) connect in information technology, especially connect electric current, and
The second output end (6) of-sensor construction group (1) and the second input of the cell supervisory controller (16)
(14) connect in information technology, especially connect electric current.
9. a kind of advance equipment, including：
- according to the sensor construction group (1) any one of preceding claims 1 to 3 and/or
- according to the cell supervisory controller (16) any one of preceding claims 4 to 6 and/or
- according to the component any one of preceding claims 7 or 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016218049.5A DE102016218049A1 (en) | 2016-09-20 | 2016-09-20 | Sensor assembly and battery monitoring control device for monitoring a current in a busbar of an electrically driven means of transport |
| DE102016218049.5 | 2016-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107843841A true CN107843841A (en) | 2018-03-27 |
| CN107843841B CN107843841B (en) | 2021-01-08 |
Family
ID=61302367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710830475.7A Active CN107843841B (en) | 2016-09-20 | 2017-09-15 | Sensor arrangement and battery monitoring controller for monitoring the current in the current rail of an electrically drivable driving device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107843841B (en) |
| DE (1) | DE102016218049A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11858437B2 (en) | 2018-10-31 | 2024-01-02 | Lear Corporation | Electrical assembly |
| WO2021175382A1 (en) * | 2020-03-03 | 2021-09-10 | Continental Automotive Gmbh | Current sensor |
| DE102020129127B4 (en) | 2020-11-05 | 2022-06-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Current measurement method and measuring device |
| DE102021209475A1 (en) | 2021-08-30 | 2023-03-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Procedure for checking the plausibility of a current measurement in an energy system |
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| CN107843841B (en) | 2021-01-08 |
| DE102016218049A1 (en) | 2018-03-22 |
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