CN109818339A - The overload protection method of bus station in automobile and the circuit device for executing this method - Google Patents
The overload protection method of bus station in automobile and the circuit device for executing this method Download PDFInfo
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- CN109818339A CN109818339A CN201811228900.6A CN201811228900A CN109818339A CN 109818339 A CN109818339 A CN 109818339A CN 201811228900 A CN201811228900 A CN 201811228900A CN 109818339 A CN109818339 A CN 109818339A
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- bus station
- assessment
- communication equipment
- bus
- limiting value
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to the circuit devices of a kind of overload protection method of the bus station in automobile and execution this method.The present invention relates to a kind of overload protection method at least one bus station (11,12,13) in automobile (K), the bus station is connected to the In-vehicle networking of automobile.The electrical decoupling of bus station and In-vehicle networking can be caused by least one safety device (15) when needed.The present invention proposes that measurement flows to the electric current (I) of bus station, and the current value of measurement is transferred at least one first assessment and communication equipment (18), and the first assessment and communication equipment are communicated with bus station or can be communicated with bus station.In specific first limiting value for the current value for reaching measurement, first assessment and communication equipment make bus station reduce its envelop of function or its power in a manner of the power consumption for reducing bus station, can be inferred that overload or abnormal load will occur for bus station under the first limiting value.
Description
Technical field
The present invention relates to a kind of overload protection methods at least one bus station in automobile.The invention further relates to one
Plant the circuit device for executing this method.
Background technique
A large amount of electrical equipments present in current automobile are usually powered by In-vehicle networking.It is well known that this vehicle-mounted
Network also has bus system, and bus system for example can be designed as CAN bus and/or LIN bus.Multiple bus stations pass through logical
In-vehicle networking is connected to the bus line of bus.Bus station in meaning of the present invention should be understood as intelligent power equipment.
Their own has intelligence, the intelligence of such as control unit form and at least one component controllable by intelligence.In this case,
Control unit can be installed along in common shell with controllable component.But this is not enforceable.For example, as this
Bus station in the sense that invention, it is contemplated that with igniter associated there air bag control unit or have and its
The conditioning control unit of associated fan motor.
It is known from the prior art to use in order to protect bus station and lead to the power line of these bus stations to prevent from overloading
In the overload protection method for the bus station for being connected to In-vehicle networking.
Thus, for example 196 25 401C1 of DE for also forming the feature of the preamble of claim 1 describes a kind of use
In the bus system of data transmission, plurality of bus station is connected to data/address bus.Specifically, one in bus station is designed
For the assessment device of occupant restraint system.Other two bus station is used as igniter, with about getting one's things ready for occupant restraint system
It sets associated.If desired, can realize the electrical decoupling of bus station and In-vehicle networking by so-called more fuse safety devices.
It has low ohm value in normal operation, in the feelings for the relatively large electric current for indicating the short circuit on associated bus line
Become high ohm under condition.If electric current then falls back to relatively low value, the resistance of more fuse safety devices is also in again
Existing low ohm state.Therefore, compared with safety fuse, more fuse safety devices are reversible.
A kind of multi-chip for testing with integral semiconductor storage known from 10 2,004 039 831 A1 of DE
The method of module, wherein the function of the memory cell in test integral semiconductor storage, and integral semiconductor storage
The address for being identified as defective memory cell be stored in integrated circuit.Specifically, integrated circuit have by
The block that the connection of electrically programmable or the safety device (E fuse) of electrically programmable are constituted, these connections or safety device pass through at it
Apply energy pulse under conduction state, it can be enduringly from low ohm high ohm or opposite of being switched to.This method is in multicore
The manufacture of piece module still can also carry out after terminating.
If now to be identified as defective memory cell carry out write-in or read access, the access is by multichannel
What multiplexer was transferred to integral semiconductor storage is not recognized as another defective memory cell.
Finally, 601 10 297 T2 of DE discloses a kind of storage dress of safety device (E fuse) with electrically programmable
It sets.Here, the safety device of electrically programmable is also used for distinguishing the redundant address for being identified as defective memory element, thus really
Storage device during operation is protected not work mistakenly.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of overload guarantor at least one bus station in automobile
Bus station can be used can for a long time under critical load state in maintaining method, the method.
The invention solves another technical problem be to provide it is a kind of for execute this method suitable circuit dress
It sets.
This method technical problems to be solved are solved by the method for feature according to the present invention.The circuit device will solve
Certainly the technical issues of, is solved by the circuit device with feature of the invention.
The present invention is based on a kind of overload protection methods at least one bus station in automobile.At least one bus station
It is connected to the In-vehicle networking of automobile.In-vehicle networking includes bus, and bus station is connected to bus by bus line.For example, bus
It can be designed as CAN bus (CAN=Controller Area Network (controller zone network)) or can also design
For LIN bus (LIN=Local Interconnect Network (local interconnection network)).If desired, can be by extremely
A few electric safety device realizes the electrical decoupling of at least one bus station and In-vehicle networking.
The present invention is currently proposed, and measurement flows to the electric current of at least one bus station, and by the current value of measurement be transferred to
Few one first assessment and communication equipment.First assessment and communication equipment are communicated with bus station or can be communicated with bus station.
In addition, the first assessment and communication equipment make bus station reduce its function in specific first limiting value for the current value for reaching measurement
Energy range or its power can be inferred that bus station will occur to overload or be at least inferred to bus under first limiting value
The abnormal load stood.By reducing the envelop of function or power of bus station, the lower power consumption of bus station.
Therefore, according to the present invention, overload or power line associated there will occur in bus station will bear
Counter-measure appropriate is just taken before lotus, to ensure the prolonged use as far as possible of bus station.
For example, reducing power can be that bus station only still exports a part of its maximum possible power, such as only still
So output 75% or 50%.Such as it is contemplated that seat heating is no longer able to and only still be able to the operation of highest heat levels
With moderate heat level run.
It is further envisioned that the bus station for being configured to control unit reduces its envelop of function, so that only still to smaller amounts
Component provide control signal, such as only still to so-called Prio-1 component provide control signal.
Therefore, under critical conditions, bus station is not closed immediately, can be (with lesser power bracket) when longer
It is interior to remain operational.
It is proposed according to the first of the method the extension design, is reaching the electric current that can be inferred that the measurement of bus station overload
Specific second limiting value when, electric safety device, which interrupts, flows to the electric current of bus station.In this way, may be implemented to by
To the best protection of the bus station of threat.
It is according to the method advantageous embodiment, bus station is related at least one second assessment and communication equipment
Connection or bus station itself have assessment and the communication equipment with the first assessment and communication apparatus communication.Second assessment and communication
Equipment to first assessment and communication equipment transmission measurement current value specific first limiting value, in specific first limiting value
Under can be inferred that bus station will occur overload or abnormal load.Second assessment and communication equipment according to there is currently bus
The load condition stood calculates the first limiting value.
Therefore, in this embodiment, static limit value is not transmitted, but the dynamic for carrying out limiting value calculates, this is considered
Actual load state of the bus station in its runing time, this is for example also related with environment temperature.
Here it is contemplated that the second assessment and communication equipment also transmit the second limiting value to the first assessment and communication equipment,
It can also infer that bus station overloads under second limiting value.Here, second assessment and communication equipment also according to there is currently
The load condition of bus station calculate the second limiting value.This is but also better account for actual load state.
It proposes for the ease of diagnostic error later or error reason, when reaching first and/or the second limiting value, will reach
The load condition of existing bus station is stored at least one preferably in non-volatile memory when to corresponding limiting value.Example
Such as, memory can be a part of the second assessment and communication equipment.The load condition to be stored can for example pass through bus station
Current power consumption or the bus station number amount and type of function that currently control characterize.
As already mentioned, the invention further relates to a kind of circuit devices for executing according to the method for the present invention.
About circuit device, the present invention is based on the circuit devices in the In-vehicle networking of automobile.In the circuit arrangement, at least one
A bus station is preferably connected to the bus of In-vehicle networking by corresponding bus line.Additionally, there are at least one electrical insurances
The electrical decoupling of bus station and In vehicle network bus may be implemented by electric safety device for device.
According to the present invention, there are at least one current measuring units, can be measured using current measuring unit and flow to bus
The electric current stood.The current value of measurement can assess for transmission at least one first assessment and communication equipment, first and communication equipment
It can be communicated with bus station.Communicated, allow to the current value according to measurement, make bus station reduce its envelop of function or
Its power.
It can be well performed according to the method for the present invention using this circuit device.In this way it is possible to ensure total
The availability as prolonged as possible at line station.
In the very favorable embodiment of present inventive concept, electric safety device is the safety device reversibly to work.
As the safety device reversibly to work, i.e. reused safety device, such as it is contemplated that the insurance of electrically programmable fills
Set (E- fuse).It can be switched by suitable switching control, wherein switching control can pass through assessment again
It is controlled with communication unit.In this way, even if that need not replace safety device there are after overload situations, this makes
Maintenance cost reduces.
It can also be filled in assessment and communication unit with the safety device or switching control associated there reversibly to work
It is communicated between setting, so that making the power loss at safety device interrupt bus station reversibly to work under specific current value.
Therefore, protection also is provided for overload simultaneously.
It can expanded circuit device as follows: there is at least one of or bus station associated with bus station oneself
Second assessment and communication equipment, can be with the first assessment and communication apparatus communication.It, can be with by the second assessment and communication equipment
Detect the current loads state of bus station.In such a case, it is possible to calculate the electric current of measurement by the second assessment and communication equipment
Limiting value and be transferred to the first assessment and communication equipment, under the limiting value, reduce bus station envelop of function or
Power, or the electric current for flowing to bus station is even interrupted by the safety device reversibly to work.
It is designed by this extension of circuit device, the best match of itself and the load of physical presence may be implemented.
Another embodiment of present inventive concept proposes that there are multiple bus stations, and bus station is designed to control list
Member, wherein each bus station is associated at least one to be controlled component.It is possible thereby to well using according to the present invention
The advantages of method.For example, therefore can notify their load condition to multiple control units, and will overload
In the case of, so that correspondingly reducing its envelop of function (" degraded functionality ").This reduces power consumption again.
Finally, another advantageous expansion scheme of circuit device proposes that at least one safety device includes the electric current
Measuring unit, the first assessment and communication equipment and switching control, allow hand over safety device by switching control
And interrupt the electric current for flowing to bus station.
This structure makes it possible to reduce the component of needs and but also circuit device is more difficult is interfered.
Detailed description of the invention
Shown in the drawings of the preferred embodiment of the present invention, and will be solved in more detail by attached drawing in the following description
Release the preferred embodiment of the present invention.Further advantage of the invention also further becomes apparent as a result,.Even if in different figures
In, identical appended drawing reference indicates the identical component of identical, similar or function.In this case, even if not carrying out weight to it
Multiple description or reference, also may be implemented corresponding or similar characteristics and advantages.These attached drawings are not always in proportion.Some
In attached drawing, may display scale in an exaggerated fashion, so as to the feature of more clearly prominent embodiment.
Fig. 1 schematically shows the circuit device used to perform the method in first embodiment,
Fig. 2 schematically shows the circuit devices used to perform the method in second embodiment, and
Fig. 3 schematically shows the chart for finally explaining the method.
Specific embodiment
Referring initially to Fig. 1.In the figure, automobile K is shown, with circuit device 1.
In circuit device 1, it can be seen that bus 10, such as can be designed as CAN or LIN bus.
Bus station 11,12 and 13 is connected to bus 10 by bus line 14.The shape in the present embodiment of bus station 11 to 13
As control unit, the terminal electrical equipment (electric component) in automobile K associated there is controlled.
Such terminal electrical equipment for example can be the portion of heating and air-conditioning system, seat adjuster, restraint system
The component of part and/or audio system.
Therefore, bus station 11 is connected to component 11-1 by signal and control route 20, and bus station 12 is in an identical manner
Be connected to the component 12-1 and 12-2 to be controlled, and bus station 13 finally with component 13-1,13-2 and 13-3 phase to be controlled
Even.It is different from the embodiment, it is also contemplated that by each of bus station 11 to 13 together with component associated there respectively
11-1,12-1 and 12-2 or 13-1 to 13-3 are mounted in common shell.
17 and 17 ' indicate power line, feed electric current I or portion of electrical current I1 to I3 to bus station 11 to 13 by them.
Certainly, bus station 11 to 13 received needs electric current I according between travelling the runtime by bus station 11 to 13
The component 11-1 to 13-3 of control and change.
It, can be with maximum electricity possible in estimation theory according to the most components and/or possible maximum power dissipation to be controlled
Stream.Rule of thumb, the average current I occurred in actual operation be significantly lower than its because be not always to all components simultaneously
It carries out control or all components is run with maximum power.
In order to bus station 11 to 13 and component 11-1,12-1 and 12-2 associated there and 13-1 to 13-3 progress
Overload protection, and protection power line 17,17 ' is alsoed for, it connects in circuit device 1 and preferably reversibly works before them
Electric safety device 15 (so-called E- fuse).
Safety device 15 can reversibly be switched by switching control 16.Switching control 16 can pass through again
It assesses with communication unit 18 and controls.
The electric current I flowed in main power line 17 by 19 test constantly of current measuring unit.The current value of measurement is passed
It is defeated to arrive assessment and communication unit 18.
In assessment and communication unit 18, two limiting values of electric current I are stored in storage unit not shown further
IG1 and IG2 (referring also to Fig. 3).
It is different from shown embodiment, it is also conceivable to by safety device 15, switching control 16, assessment and communication
Unit 18 and current measuring unit 19 are integrated in one unit.It is different from the embodiment, it is also contemplated that by safety device
15 are designed as common safety fuse.In this case, be not present switching control 16, and safety device 15 with
It is not required or useful that assessment is connected with the signalling technique of communication unit 18.
At this point, if reaching the first limiting value IG1 of electric current I, in the first limiting value IG1 during automobile K running
Under can be inferred that one of bus station 11 to 13 or bus station 11 to 13 or one of the component associated there or also
Have one of power line for leading to these bus stations 17,17 ' will occur or will occur overload or abnormal load, then assessment and
Communication unit 18 communicates as follows with the assessment of bus station 11 to 13 and communication unit 21 (being represented by the dotted line):
It makes bus station 11 to 13 or at least relevant bus station only still control controllable component 11-1 to 13- respectively
The component (Prio1 component) with highest priority in 3, or the component is made only still to work with reduced power.
This make the electric current measured by current measuring unit 19 be re-lowered to the first limiting value IG1 suddenly hereinafter, and
The load of circuit device 1 moves in " green " range again.
Therefore, it is the advantages of this method, counter-measure can be just taken before it will overload, and be not required to
The safety device 15 reversibly to work is switched to and is not used.That is, this will lead to bus station 11 to 13, thus causes
Component 11-1 to 13-3 paralyses completely.
When the load condition that current measuring unit 19 occurs and measures the second limiting value IG2 simultaneously it is thus determined that overloads, cut
It changes control device 16 and just switches safety device 15, so that electric current I is interrupted completely.
It is different from the embodiment, it is also contemplated that replacing fixed limiting value IG1, IG2, connected according to current loads situation
This limiting value is determined continuously and is stored rapidly in assessment and communication unit 18.
For this reason, it may be necessary to which each assessment and communication unit 21 pass through bus 10 for the current loads of bus station associated there
State transfer to assessment and communication unit 18.Assessment and communication unit 18 (become at any time according to the dynamic of its calculating current I
Change) limiting value and it is continuously stored in (not shown in detail) in volatile memory.
In addition, the method corresponds to the description of front when one in reaching the limit values.
The advantages of this method modification, is higher precision, is thus the optimum utilization to bus station 11 to 13.
Now, the circuit device 1 ' of another embodiment is described with reference to Fig. 2.
Here, the embodiment from front is different, in electric power associated there respectively before each bus station 11 to 13
The safety device 15 of connection oneself reversibly to work in line 17 '.
In addition, switching control 16, current measuring unit 19 and assessment and communication unit 18 are integrated in each insurance
In device 15.The component being previously mentioned for example can integrate in common shell and/or on common circuit board.
Equally, for the modification, and two sub- modifications of the method are contemplated that:
First, it can be each assessment and communication according to component 11-1 to 13-3 associated with bus station 11,12 or 13
Unit 18 stores two limiting values for flowing to electric current I1, I2 or I3 of corresponding bus station 11,12 or 13.For it is each assessment and
Communication unit 18, method in this embodiment with front similarly carry out.
However, circuit device 1 ' provides the advantages of higher level of detail.Only reduce in critical load state or respectively
The envelop of function of bus station through unacceptable load condition interrupts the electric current for arriving the bus station.
Second, in circuit device 1 ', when each of assessment and communication unit 21 are again to corresponding assessment and communication
When unit 18 notifies the load condition of physical presence, the better adaptability to actual operating state also may be implemented.Therefore, this
In, for each bus station 11 to 13, dynamic current limits value can be similarly determined with first embodiment.
Finally, being summarized again with reference to Fig. 3 according to the method for the present invention:
Here it is possible to see the figure described the electric current I for flowing to bus station on vertical pivot and describe time t on longitudinal axis
Table.
Qualitatively depict two the limiting values IG1 and IG2 of the electric current I of flowing.It is formed under the first limiting value IG1
" allowed band " B1, and " forbidden range " B3 is then defined as to circuit engineering on the second limiting value.
" critical range " B2 is defined as between limiting value IG1 and IG2.
After automobile K starting, such as it is contemplated that there is electric current I the time schematically shown to move towards I (t).It can be with
Find out, electric current I is run in allowed band B1 before time point t1.In time point t1, current measuring unit 19 measures electricity
I is flowed, the first limiting value IG1 is corresponded to according to the comparison in assessment and communication unit 18.
Then, it assesses and communication unit 18 sends the instruction for reducing its envelop of function to corresponding bus station 11,12 or 13.
This function, which is reduced, makes the power consumption of corresponding bus station in time point t2 (usually after time point t1 within the scope of millisecond)
It reduces, so that electric current I is re-lowered to the first limiting value IG1 or less.
Further decreasing for electric current I occurs in time point t3, such as since operator deactivates component manually.
If, no matter for which kind of reason, current value I increases suddenly, until reaching the second limiting value in time point t4
IG2 then issues signal from assessment and communication unit 18 to switching control 16, executes the switching of safety device 15, namely holds
The interruption of row electric current I.
Therefore, even if critical load situation occurs during this period, also allow bus station 11 to 13 according to the method for the present invention
It runs for a long time as far as possible.
Using shown vertical double-head arrow, show in additional assessment and the communication unit for using the bus station being previously mentioned
When member 21, the critical range B2 stored can be with time correlation with dynamic range D change.
Reference signs list
1,1 ' circuit device
10 buses
11-13 bus station
The component of 11-1 bus station to be controlled
The component of 12-1,12-2 bus station to be controlled
13-1 to 13-3 bus station the component to be controlled
14 bus lines
15 safety devices (E- fuse) reversibly to work
16 switching controls
17,17 ' power line
18 assessments and communication unit
19 current measuring units
20 signals and control route
21 assessments and communication unit
B1 allowed band
B2 critical range
B3 forbidden range
D dynamic range
I electric current
I1-I3 portion of electrical current
First limiting value of IG1 electric current
Second limiting value of IG2 electric current
K automobile
The t time
T1-t3 time point
Claims (10)
1. one kind is at least one bus station (11,11-1 in automobile (K)；12,12-1,12-2；13,13-1,13-2,13-
3) overload protection method, the bus station are connected to the In-vehicle networking of automobile (K), wherein when required by least one
Safety device (15) causes or can cause bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) and vehicle
The electrical decoupling of support grid network, which is characterized in that measurement flows to bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,
Electric current (I) 13-3), and by the current value of measurement be transferred at least one first assessment and communication equipment (18), described first
Assessment and communication equipment and bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) communication or can be with
Bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) communication, and in the spy for the current value for reaching measurement
When fixed first limiting value (IG1), so that bus station (11,12,13) is to reduce bus station (11,11-1；12,12-1,12-2；13,
13-1,13-2,13-3) the mode of power consumption reduce its envelop of function or its power, can under specific first limiting value
It is inferred to bus station (11,11-1；12,12-1,12-2；Overload or abnormal load will 13,13-1,13-2,13-3) occur.
2. according to the method for claim 1, which is characterized in that can be inferred that bus station (11,11-1 reaching；12,
12-1,12-2；13,13-1,13-2,13-3) overload measurement electric current (I) specific second limiting value (IG2) when, pass through guarantor
Dangerous device (15) interrupts and flows to bus station (11,11-1；12,12-1,12-2；Electric current (I) 13,13-1,13-2,13-3).
3. method according to claim 1 or 2, which is characterized in that by bus station (11,11-1；12,12-1,12-2；13,
13-1,13-2,13-3), second assessment and communication equipment associated at least one second assessment and communication equipment (21)
(21) with it is described first assessment and communication equipment (18) communicate and to it is described first assess and communication equipment (18) transmission measurement
Current value specific first limiting value (IG1), can be inferred that bus station under specific first limiting value (IG1)
(11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) overload or abnormal load will occur, wherein described second
Assessment and communication equipment (21) are according to bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) currently deposit
Load condition calculate first limiting value (IG1).
4. according to the method for claim 3, which is characterized in that second assessment and communication equipment (21) are also to described the
Second limiting value (IG2) is transmitted in one assessment and communication equipment (18), wherein second assessment and communication equipment (21) root
According to bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) there is currently load condition calculate described in
Second limiting value (IG2).
5. according to method described in one of preceding claims, which is characterized in that reaching the first and/or second limiting value
When (IG1, IG2), will when reaching corresponding limiting value (IG1, IG2) existing bus station (11,11-1；12,12-1,12-2；
Load condition 13,13-1,13-2,13-3) is stored at least one processor.
6. in a kind of In-vehicle networking of automobile (K), for executing the circuit according to method described in one of preceding claims
Device (1,1 '), wherein at least one bus station (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) it is connected to
The bus (10) of In-vehicle networking, wherein there are at least one safety devices (15), can be realized bus by the safety device
Stand (11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) electrical decoupling with the bus (10) of In-vehicle networking, it is special
Sign is that there are at least one current measuring units (19), can be measured using the current measuring unit and flow to bus station
(11,11-1；12,12-1,12-2；13,13-1,13-2,13-3) electric current (I), and measure current value can be transferred to
At least one first assessment and communication equipment (18), first assessment and communication equipment (18) can be with bus stations (11,11-
1；12,12-1,12-2；13,13-1,13-2,13-3) communication, so that making bus station (11,11-1 according to the current value of measurement；
12,12-1,12-2；13,13-1,13-2,13-3) reduce its envelop of function or its power.
7. circuit device (1,1 ') according to claim 6, which is characterized in that the safety device (15) is designed as reversible
The safety device of ground work.
8. according to circuit device described in claim 6 or 7 (1,1 '), which is characterized in that exist and bus station (11,11-1；
12,12-1,12-2；13,13-1,13-2,13-3) associated at least one second assessment and communication equipment (21), described the
Two assessments and communication equipment (21) can be communicated with first assessment and communication equipment (18), and be assessed by described second
Current loads state is able to detect with communication equipment, wherein survey can be calculated by second assessment and communication equipment (21)
The limiting value (IG1, IG2) of the electric current (I) of amount and can be transferred to it is described first assessment and communication equipment (18), in the pole
Reduce bus station (11,11-1 under limit value；12,12-1,12-2；13,13-1,13-2,13-3) envelop of function or power, or
Person passes through safety device (15) interruption reversibly to work and flows to bus station (11,11-1；12,12-1,12-2；13,13-1,13-
Electric current 2,13-3).
9. according to circuit device (1 ') described in one of claim 6 to 8, which is characterized in that there are multiple bus stations (11,12
With 13), and the multiple bus station is designed to control unit, wherein each bus station (11,12,13) and at least one
Component (the 11-1 to be controlled；12-1,12-2；13-1,13-2,13-3) it is associated.
10. according to circuit device described in one of claim 6 to 9 (1,1 '), which is characterized in that at least one described insurance dress
Setting (15) includes the current measuring unit (19), first assessment and communication equipment (18) and switching control
(16), safety device (15) are allowed hand over by the switching control (16), and can interrupt flow to bus station (11,
12,13) electric current.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017220870.8 | 2017-11-22 | ||
| DE102017220870.8A DE102017220870A1 (en) | 2017-11-22 | 2017-11-22 | Method for overload protection of at least one bus station in a motor vehicle and circuit arrangement for carrying out the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109818339A true CN109818339A (en) | 2019-05-28 |
| CN109818339B CN109818339B (en) | 2021-03-09 |
Family
ID=66336264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811228900.6A Active CN109818339B (en) | 2017-11-22 | 2018-10-22 | Method for protecting bus stations in a motor vehicle against overload and circuit arrangement for carrying out the method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109818339B (en) |
| DE (1) | DE102017220870A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690840A (en) * | 2020-05-13 | 2021-11-23 | 大众汽车股份公司 | Method for the electrical protection of an onboard power supply system of a motor vehicle and motor vehicle |
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| CN204741302U (en) * | 2015-06-12 | 2015-11-04 | 重庆科创职业学院 | Mobile unit's supply circuit |
| CN105539157A (en) * | 2016-02-20 | 2016-05-04 | 南京越博动力***股份有限公司 | High-voltage distribution box based on vehicle-mounted CAN bus network |
| CN106537712A (en) * | 2014-07-29 | 2017-03-22 | 宝马股份公司 | Device for monitoring a high-voltage on-board power supply system of an electrically operated vehicle for the occurrence of overloading |
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| DE10110046A1 (en) * | 2001-03-02 | 2002-09-05 | Bosch Gmbh Robert | Switching controller for electrical equipment in vehicle, has detector for current passing through switches to determine their control |
| DE102004039831B4 (en) | 2003-08-25 | 2016-05-12 | Infineon Technologies Ag | Multi-chip package |
| DE102014007548A1 (en) * | 2014-05-22 | 2015-11-26 | Audi Ag | Method for operating a vehicle electrical system of a motor vehicle and motor vehicle |
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| JPH11329190A (en) * | 1998-05-13 | 1999-11-30 | Harness Syst Tech Res Ltd | Abnormality signaling device for vehicle |
| CN1917329A (en) * | 2005-08-19 | 2007-02-21 | 上海尽祥数码科技有限公司 | Direct power feed bus controller for cars, and control method |
| CN106537712A (en) * | 2014-07-29 | 2017-03-22 | 宝马股份公司 | Device for monitoring a high-voltage on-board power supply system of an electrically operated vehicle for the occurrence of overloading |
| CN204741302U (en) * | 2015-06-12 | 2015-11-04 | 重庆科创职业学院 | Mobile unit's supply circuit |
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| CN113690840A (en) * | 2020-05-13 | 2021-11-23 | 大众汽车股份公司 | Method for the electrical protection of an onboard power supply system of a motor vehicle and motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017220870A1 (en) | 2019-05-23 |
| CN109818339B (en) | 2021-03-09 |
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