CN107797596A - For the method and circuit arrangement for disconnecting voltage source and at least one electrical appliance - Google Patents
For the method and circuit arrangement for disconnecting voltage source and at least one electrical appliance Download PDFInfo
- Publication number
- CN107797596A CN107797596A CN201710757166.1A CN201710757166A CN107797596A CN 107797596 A CN107797596 A CN 107797596A CN 201710757166 A CN201710757166 A CN 201710757166A CN 107797596 A CN107797596 A CN 107797596A
- Authority
- CN
- China
- Prior art keywords
- current
- electrical appliance
- control logic
- logic device
- circuit arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
-
- 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
- H02H3/093—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 with timing means
-
- 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
- H02H3/20—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 voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Emergency Protection Circuit Devices (AREA)
- Keying Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention relates to one kind to be used for voltage source and at least one electrical appliance dead circuit apparatus and method, wherein circuit arrangement is provided with least one current measurer, the current measurer directly or indirectly at least measures the electric current exported by voltage source pari passu, the electric current is by network delivery to electrical appliance, wherein circuit arrangement is provided with control logic device, control logic device operates electric switch according to the output signal of current measurer, supply by network to electric current can be disconnected by electric switch, wherein it is additionally provided in measuring the measurement apparatus of the state of electrical appliance, the output end of the measurement apparatus is connected with control logic device.Pass through the present invention, control logic device according to current measurer and measurement apparatus concurrently and essentially simultaneously act on the signal of control logic device come Operation switch, control logic device is disconnected state through measurement of the current critical value of electric switch dynamically with electrical appliance and match.
Description
Technical field
The present invention relates to one kind to be used for voltage source and at least one electrical appliance dead circuit apparatus and method.
Background technology
Solution for voltage source and at least one electrical appliance to be disconnected is fuse.Fuse is generally basede on temperature-sensitive
Resistance (PTC, positive temperature coefficient), that is to say, that resistance is low under normal working conditions, and material under high currents
Heating, on the other hand, occurring great resistance rise in this material category.The interruption of circuit passes through the fusing of the conducting line segment determined
And realize.Herein, it is decisive to caused thermal power.This process and ambient temperature, overcurrent time and wait
Level is extremely related.Figure 1 illustrates by fuse to the control device in the In-vehicle networking of motor vehicle and the typical case of electrical appliance
Protection.
For example, for the multimedia device in motor vehicle, fuse is typically for example integrated into connection chunk
The fuse (Mini ATO Fuse) of measurement electric current with 10A or 15A.15A fuses are integrated molten with such as 240A2s
Silk and the fusing after about 1 second under 30A electric current.Blowout current changes from 110% in the range of -40 DEG C to+90 DEG C
To 90%.Under 35% overcurrent condition (such as under 15A measurement electric current be 20,25A), fusing time can be 0.75
Second and between 600 seconds.
For the device inputted with less electric current, SMD fuses are used sometimes for space and cost reason.This
Structure type then additionally has following problems, i.e., a kind of damage in advance is produced in soldering.This shows as still insecure molten
Disconnected characteristic.
That is, thus it is far above the current critical value provided simply against following failure situations, the failure situation.
Thus effectively protection device can not be realized, only realizes wire-protecting.
In the presence of the following other possibility for being used to protect electric control unit and multimedia device in particularly In-vehicle networking
Property：Electric control unit and multimedia device have the maximum allowed current input (such as 11A+/- 1A) that can accurately determine very much.
That is, the fixed value (being herein 1.1A) within the relatively little of minimum time more than about 10% is (only for excluding pulse
(spike)) in the case of may originate from undesirable event of failure.That is, it is necessary to accurately current measurement and rapidly
It is fully disconnected fault branch (device).This requirement can be met by using electronic fuse.Particularly known have
The solution of electronic switching element, the electronic switching element are brilliant by means of field-effect when more than the electric current measured by sensor
Body pipe disconnects or limited.This newer solution is commonly referred to as electronic fuse or overcurrent cutting-off.In order to keep away
Exempt to completely cut through device under of short duration current peak, measured electric current can generally be quadratured on the regular hour.
On the one hand, when although the solution of the known integration by means of on the time realizes higher precision and faster reaction
Between, but a kind of still method based on fuse eventually.On the other hand, for crucial failure described further below
Situation, the limitation to electric current do not have suitable measure.Figure 2 illustrates the original of this fuse with electronics circuit flowing element
Reason figure.
But a kind of important failure can't be eliminated by using quick and complete disconnection in a large amount of situations.Example
Protection device such as audio-frequency power amplifier (power amplifier) need to allow about 10A very high electric current (with
20W four passages under 14V and 57% coefficient of efficiency).If the electric current not in accordance with as plan by audio output stages
Consume with loudspeaker, but caused by the element of the failure on this supply network, then this fuse does not fuse.It is but former
At this moment it is breakneck that the power that the element of barrier receives is waited.Accident on this circuit board occur surprising rapid and
Under common packaging density now under the current ranges of 5 to 8 peaces (under the supply voltage in 14V and after logical arc)
It is possible.
From a kind of electronics device for fusing known to the B2 of US 9030794, there is the cutout of slow turn-on (soft start) to fill for it
Put and short-circuit fuse.Cut-off device is provided with current measurer, and the current measurer passes through electricity in the case of overcurrent
Sub- fuse disconnects the electric current for being delivered to electrical appliance.In the case of electrical appliance has short circuit, in the cut-off device of slow turn-on
Before working, in order to protect load, specific short-circuit fuse by electronic switch, supply immediately by turn-off current.It is this known
Circuit arrangement the shortcomings that be, in the case of the rise of slow electric current and fault circuit fusing, only fixed upper
In the case of limit, implement the disconnection of electrical appliance.That is, cannot distinguish between, whether measured total current is all by electrical appliance
Use, or whether be related to fault current at least in part.
The content of the invention
Therefore, the present invention from the circuit arrangement and method of a kind of preamble corresponding to claim 1 or 11 simultaneously
It is proposed following purpose, there is provided a kind of circuit and a kind of method, it is in terms of the current critical value that the electric current for loading importing disconnects
It is also contemplated for the state of the load through measurement.The task solves by the combinations of features implemented in claim 1 and 11.Thus originally
Whether it or not the fusing limit for providing single fixation that the core of invention is, but provides the critical value dynamically matched, described critical
Value compound can be realized according to working condition and existing sensor (measured value signal device) are any.In other words, it is essential
On, additional local message is introduced in logical operation by the feedback to safety element, to be monitored by safety element
To electric current be evaluated as allowing or do not allow.Thus, it will be less than the scope bag of the maximum allowed current in normal work
Include in malfunction monitoring.It is defined as a kind of following unit in this safety element, the unit includes electronic switch, current measurer
And logic control circuit.
One of the present invention important to be characterized in additional sensor being directly used in set load.For example,
This can be the under-voltage identification of natively existing such as integrated power output stage.In fact monitoring is current in practice herein
The supply voltage of application, it is so-called thus to avoid so that " noise reduction ", i.e. Speaker Quiet are arrived in regulation rapidly in the case of breakdown
Patter noise.
According to the present invention circuit arrangement structure special reduction procedure in variant of the invention by using root
Drawn according to the feature described in claim 2.In addition to measuring on the curtage of load, within the scope of the invention also
Other states through measurement, for example hot of electrical appliance can be analyzed by being arranged in measurement apparatus on or near electrical appliance
Amount, discoloration, voice signal or machinery change.The measurement of curtage on electrical appliance is especially to meet purpose, because one
Aspect voltage can easily be converted into current value and another aspect total current is after all measured by current measurer.Thus,
Logic control circuit can combine the feature that claim 3 is implemented advantageous by application and design with carrying out relative very simple.This
Outside, the sensor for measuring curtage is after all widely distributed in the common circuit of electrical appliance, so as to which the sensor is attached
It can also be utilized for adding analyzing fault current.
The use of feature according to claim 4 is special to reduce space and the input power needed for circuit arrangement
Purpose is not met.Here, this integrate refers to include authenticity test logic circuit and provide affiliated input, also refer to institute
There is the monitoring of In-vehicle networking side and multiple load switches are possibly combined into a component and thus monitor electricity in outlet side
Stream.For this it is of special importance that the distribution of input supplying energy is included into monitoring, unstable distribution is dangerous spot.Change
Sentence is talked about, and on the circuit board with multiple layers, insulating barrier is extremely thin therebetween.When now unstable vehicle power must
When must be widely distributed on this circuit board, fire risk rise.
In the modification of the present invention, electronic switch can be provided with corresponding to feature according to claim 5
One or more transistors and/or FET and/or FinFET and/or CNT in power embodiments.Preferably, control
Logic device is configured to the circuit integrated in hardware.It still can suggest programmably designing in the expansion scheme of the present invention
Control logic device, as proposed by feature according to claim 6.Therefore, circuit arrangement can be more simply
Match from different electrical appliance and/or dangerous situation.
Because after all often setting big quantity sensor in the electrical appliance of complexity, suggest making in variant of the invention
With feature according to claim 7.This is not only applicable to apply the present invention to audio output stages.Modern information joy
Happy device is highly complex and has a variety of build-in functions.High-end processors can also consume maximum 15W without any problems.
Control logic device in safety element should independently obtain logic list that is through authenticity test and dynamically matching with software
Member, so as to consider the sensing data from different load branch.Carried on feature according to claim 7
Go out, an own current measurer is configured to the part of each electrical appliance or electrical appliance.But it is also contemplated that, will
Electric current (or the electric current to be converted by current measuring device) in each electrical appliance is added and by the value and control logic of total current
Total current in device is compared, and the control logic device is measured by single total current galvanometer.
The preferable configuration of the present invention using feature according to claim 8 by drawing.The present invention for
Audio output stages are particularly effective, because the required peak power of output stage is relatively large while possibility is notable
Ground changes.But it is also applied for corresponding element or component in this respect.Then, with suitable in the case of audio output stages
Mode solves following problems, i.e., the power of described audio output stages must be all the time by vehicle on-board network offer and the guarantor of there
Shield is carried out only for maximum electric current in summation all the time.Control unit in motor vehicle and amusement electrical appliance typically directly by
12V In-vehicle networkings (being 24V for truck) are powered.The input current of these devices is generally current with it with certain amount level
Working condition vibrates relevantly.
Advantages of the present invention must be evaluated in order to abundant in the case of by the In-vehicle networking of the invention applied in motor vehicle,
It must take into consideration as follows：Nearly all electronic installation is for good and all connected and needed with vehicle-mounted-current supply device at present in motor vehicle
Want at least one high current feeding mechanism.It means that the permanent part of the device exists under In-vehicle networking voltage and work
Make.Therefore following regions and circuit on circuit boards be present, break down in component (such as ceramic condenser for the region and path
Device is damaged, semiconductor damage) when or can suffer from short circuit current when water or conductive foreign matter invade.In order to avoid described event
Barrier situation and further more serious result such as fire produce smog, are added to fuse according to current prior art
In main current circuit, but the fuse as above having been described above is only effective under certain condition.
Secondly, for specific application (particularly less power), the safeties of Self-resetting be present, i.e., it is so-called
PPTC, the safeties are after eliminating the failure for causing overcurrent and cooling down and return in normal work.But
The safeties are confined to completely to disconnect, and it considers from caused by outside, can disappear again
The application of failure.But in the case of mentioned by the last period, do not consider selfreparing, and caused short circuit current can be
About 10A and Geng Gao, this is corresponding to bigger than being enough to cause the trouble location power of fire.Fig. 1 is shown according to current existing skill
The solution in principle of art.
In order to improve the authenticity of the disconnection process in fault current situation, it is proposed that application is according to claim 9
Feature.It is when the voltage monitor of the voltage on monitoring voltage source determines under-voltage, then logical to be, it is also necessary in electricity consumption
Under-voltage is produced on device.Although that is, measuring the under-voltage on electrical appliance in this case, electrical appliance is not
Disconnected with power network.Conversely, the overvoltage determined on voltage source can cause to set in the case of than the normal voltage on voltage source
The disconnection put disconnects electrical appliance earlier.That is, bigger safety can be realized by the feature provided in claim 9
Property and avoid unwanted disconnection.
The other configuration for meeting purpose of one of the present invention is feature according to claim 10.Say above
Understand, the element (PPTC) of turn-off current feeding mechanism can be used in the circuit arrangement, the element is if necessary and automatically
Turn-on current feeding mechanism.In this case advantageously, when eliminate fault current cause when, just provide connect again can
Can property.
Brief description of the drawings
Below according to brief description of the drawings embodiments of the invention.In accompanying drawing (or diagram)：
Fig. 1 shows the known circuit arrangement for being provided with fuse,
Fig. 2 shows the known circuit arrangement for being provided with electronic switch,
Fig. 3 shows the first embodiment of the present invention,
Fig. 4 shows the second embodiment of the present invention,
Fig. 5 shows the third embodiment of the present invention,
Fig. 6 shows the fourth embodiment of the present invention,
Embodiment
It is connected figure 1 illustrates the voltage Ubat of vehicle battery by joint 6 and 12 with fuse 13, electric current can be through
Cross the fuse and flow to electrical appliance 5 by In-vehicle networking wave filter 14.Referred to as the unit of In-vehicle networking wave filter includes being used for
The wave filter and network 4 of smooth voltage peak value or current peak, the network are used to electric current is assigned on wave filter and used
In electrical appliance 5.Task, working method and the shortcoming of fuse 13 have explained in the beginning of the present invention.
Fig. 2 shows the principle of the known circuit arrangement with electronic switch.Reference 6 and 12 represents motor vehicle again
The voltage Ubat of vehicle battery joint, wherein, the electric current exported by In-vehicle networking is not by fuse as shown in Figure 1
13 but electrical appliance 5 is directed into by electronic switch 1.Network 4, the network symbol are also symbolically shown in fig. 2
Ground expression is directed to the wire of electrical appliance, represents the wiring system extended inside circuit arrangement also symbolicly.
Current measurer 2 is provided with according to Fig. 2 knowable circuit arrangement, the current measurer hereinafter more to be referred to as
Current sensor 2.The electric current for flowing to electrical appliance by network 4 when connecting electronic switch 1 is measured using current sensor.Electricity
The measurement signal of flow sensor 2 is transferred to control logic device 3, and the control logic device operates electronic switch according to measurement signal
1.The working method and its shortcoming that overcurrent shown in this Fig. 2 disconnects explain above.Control logic device
Purpose is to avoid directly to operate electronic switch 1 when the electric current for flowing through current sensor exceedes predetermined critical value.Really
Say with cutting, should make the disconnection of electric current and actually required matching criteria by means of control logic device 3.This means for example,
Electronic switch 1 is not connected immediately under short voltage peak, but is exceeded when the voltage long enough by current measurer measurement
Just connected during critical value.Determine that the method for this state may, for example, be time interval of the current value through measurement on determination
Quadrature.On this point, the control logic device in Fig. 2 on electronic switch 1 imitates the characteristic of fuse.
In the case where the use of the electronic switch according to Fig. 2 also has the advantages of notable compared with the fuse in Fig. 1,
A kind of important fault type is not accounted for by this electronic switch.This is related to following fault currents, the failure
Electric current substantially can be between the output end of current sensor 2 and the input of electrical appliance 5, preferably produce in network 4
It is raw.This is particularly suitable for following electrical appliances, and the electrical appliance can be in terms of its input power significantly according to prerequisite
Vibration or change, and the maximal input of the electrical appliance is very high.If such as measured by current sensor 2
Go out relatively high but be less than the electric current for allowing critical value, then entirely possible, a part of high current is not over electricity consumption
Device (electrical appliance is adjusted to consume relatively low power just), but fault current is used as by (symbolically showing in Fig. 3
Going out) short-circuit resistance 9 flows to ground wire.As being described in detail above, the fault current is fully able in device
In cause fire.Therefore the important purpose of the present invention is, current for current sensor 2 when producing the fault current
The situation that the electric current measured is also less than its critical value realizes the automatic electric current supply for disconnecting electrical appliance, and also disconnects insurance member
The electric current of part 10 (referring to the definition provided with reference to claim 1) itself is supplied.
Fig. 3 shows the theory structure of the circuit arrangement 100 according to the present invention, and the circuit arrangement is in the form of control unit
Driven by the In-vehicle networking of motor vehicle.Electric supply installation (In-vehicle networking) in the terminal box with two joints 6 and 12 with control
Unit connects.The electronic switch 1 connected in a manner of as short as possible is closelyed follow after the described control unit, the electronic switch has
Sharp ground is made up of field-effect transistor.The electronic switch so connects, i.e., it, which is in, can be fully disconnected to control unit
The position of power supply.
In a possible variant, the different parts of control unit also individually disconnect element by one respectively and supplied
Electricity, as it is engaged according to as described in Fig. 5 and 6 embodiment in detail.
Control as the field-effect transistor of electronic switch 1 needs servicing unit, for example for control gate electrode
Fixed voltage limits device.The servicing unit related to embodiment be not specifically shown in and according to the present invention by comprising
In the chunk of control logic device 3.
In order to realize that basic task needs a current measurer 2, current measurer measurement it is current and electronic cutting
Close 1 relevant supply current and by the transmitting measured values to control logic device 3.With known and with reference to described in Fig. 2
Mode, in control logic device 3 by means of integrator and threshold comparator detect in certain minimum time exceed pass through
The maximum current of sensor 2 and then will switch 1 control disconnection (not turning on) state, until for example disconnecting vehicle-mounted net
Network.It can be realized in the circuit according to Fig. 3 for the alternative device for connecting trial again.But when exist it is serious, may
It is this to connect trial again and be avoided by when also resulting in the failure of indirect loss.Prerequisite to this is reliably to detect
The failure.In most of situation, other electric current between switch element and the current drain 5 of reality be present and distribute member
Part, the printed conductor section at least on circuit board, the printed conductor section are symbolically shown as network 4 in figure 3.Herein
There may be to the branch road of other sub- electrical appliance.If short circuit now occurs in this controlled power distribution network or network 4
(symbolically being shown in figure 3 as short-circuit resistance 9), then it can be far below the caused short circuit current and be used to disconnect
The predetermined critical value of electric current, but the calorie spread of failure can be sizable herein.
As the result of the fault current by the short-circuit resistance 9 in network 4, most of survey by current measurer 2
Amount electric current flows through short-circuit resistance 9, and thus causes the breakdown of the supply voltage on electrical appliance 5.Local voltage monitor 7
This under-voltage is detected on electrical appliance 5 and is sent it in the control logic device 3 of safety element 10.By by sensing
The minimum current of flows through sensor 2 is entered more than zero-sum less than maximum allowed current while in the case of the notice under-voltage of device 7
Row logical operation, draw the new additional standard for safely disconnecting.
One simple state status can be such.When under-voltage identification device identifies under-voltage, in electric current
Disconnected all the time under the larger electric current more than adjusted threshold value on sensor 2, wherein, the threshold value is less than maximum allowable electricity
Stream.In this case based on this, i.e. usual fault current is relatively large, puncture at electrical appliance 5 so as to voltage and
Under-voltage identification device 7 responds.This simple state status is highly suitable for the structure of integrated circuit, in the circuit
The determination of the output signal on current sensor and under-voltage identification device is only determined in control logic device 3 in structure
Threshold value.Because be natively provided with the more of under-voltage identification dress (such as noiseless loudspeaker to be switched under under-voltage)
In individual (such as output stage for audio-frequency amplifier) device, the present invention can be by relatively simple integrated circuit with complete
The mode of hardware realizes that its mode is, if the corresponding threshold value in the case of current measurer 2 and under-voltage identification device 7
It is exceeded, then disconnects electronic switch 1.
Higher security can be by making the disconnection process of electronic switch 1 be filled with current measurer 2 and under-voltage identification
7 output signal is put dynamically to match to realize.This can so be represented herein, i.e. what is measured by current measurer 2
Under larger current, and under the larger voltage on the electrical appliance 5 as under-voltage, failure is identified as by control logic device 3
Electric current and electronic switch 1 is disconnected.Herein by it is following consider, i.e., fault current is basically by by current measurer 2
Difference between the electric current of measurement and the electric current for flowing through electrical appliance 5 determines.That is, if crossing control logic device 3 can realize
The disconnection of electronic switch 1 can be operated according to the instant value for the electric current for flowing through current measurer 2 and electrical appliance 5, then when in electricity consumption
When under-voltage is also not up on device 5, disconnection fault current can also be realized.It will not cause to those skilled in the art huge
Big technical difficulty, the voltage on electrical appliance 5 is converted into current strength and control logic device 3 can be realized and flowed currently
Electronic switch 1 is disconnected in the case of the sufficiently large difference of the electric current of overcurrent measuring appliance 2 and electrical appliance 5.Larger flexibility
It can additionally realize in the following way, control logic device 3 is provided with form, and the form represents, in the electricity of sensor 2
Electronic switch 1 is have to be off under which kind of of flow valuve or the magnitude of voltage on electrical appliance 5 combination.
Fig. 4 shows the embodiment somewhat changed of the present invention relative to Fig. 3.In the characteristic of the present invention, add
Ground connects the joint 6,12 of voltage monitor 11 and In-vehicle networking voltage, and the output end of the voltage monitor is passed to control
Logic device 3.Utilize this embodiment of the present invention, it is possible to achieve for the disconnection by electronic switch 1 standard it is additional
Authenticity test.That is if it is determined that In-vehicle networking itself has under-voltage, then it can also be contemplated to be, under-voltage is applied
It is added on electrical appliance.If a under-voltage in fact now is determined by under-voltage identification device 7, the under-voltage attribution
Under-voltage on the joint 6,12 of In-vehicle networking.It is correspondingly not by the disconnection of electronic switch 1 in this state status
Meet purpose, because very big in the absence of the possibility of fault current in this case.In addition, the present invention is according to Fig. 4's
Configuration is consistent with the configuration according to Fig. 3 to a certain extent, so as to which the process illustrated there also keeps effective.
Fig. 5 shows the other configuration of the present invention, wherein, using multiple current sensors 2, for detecting electrical appliance
5 multiple parts or the electric current of multiple electrical appliances 5.Here, each electric current of electrical appliance 5 is monitored in terms of different threshold values,
This causes higher precision in Fault Identification.The present invention is in principle according to Fig. 5 embodiment, in multiple times and accurate
Concurrently use the method with reference to described in Fig. 4.Control logic device 3 is configured to, once can in the electrical appliance 5 at least
One electrical appliance identifies fault current, then the control logic device 3 makes all electrical appliances and insurance member by means of electronic switch 1
Part 10 itself disconnects with In-vehicle networking.The embodiment shown in Figure 5 of the present invention is particularly suitable for use in multiple electrical appliances 5
Complicated circuit, particularly when the electrical appliance have high maximum current consumption and can independently of each other its input
It is conditioned in terms of power.If crossing electrical appliance to be all disposed within single circuit board, the embodiment shown in Fig. 5 is also special
It is not effective, because whole circuit board can be made not near only a single electrical appliance in the case of enough fault currents
It can use.Delimitation is especially given due to can be identified in control logic device 3, therefore according to the structure of Fig. 5 circuit arrangement
The possibility of fault current position, the disconnection of fault current is triggered by the control logic device of each electrical appliance 5.With reference to Fig. 3
It is described by that can also be reapplied to the analysis for flowing through the electric current of corresponding electrical appliance and current sensor by control logic device 3
In the configuration according to Fig. 5.
Embodiment according to Fig. 6 is illustrated in detail in being based on flowing through electrical appliance 5 as the supplement according to Fig. 4 configuration
Electric current control the possibility of the control logic device 3.It is suitable to combine the embodiment that Fig. 4 is obtained for this respect for this
, so as to also can apply can relatively simply implement to current sensor 5 and the difference between current of electrical appliance current measurer 8
The measurement of value.That is, however, it would be possible to feedback transducer is realized by the current sensor of part, wherein, then simply
Ground draws the value of fault current by the difference of the measured value of the sensor 8 on current sensor 2 and load 5 and thus draws peace
Full trigger criteria.Here, (1. Kirchhoff's law) can draw the summation of the electric current of multiple local measurements and with carrying out autobiography
The value of sensor 2 compares.
Claims (11)
1. one kind is used for voltage source (6,12) and at least one electrical appliance (5) dead circuit device (100), wherein, it is described
Circuit arrangement is provided with least one current measurer (2), and the current measurer is directly or indirectly at least surveyed pari passu
The electric current that amount is exported by the voltage source (6,12), the electric current are transported to the electrical appliance (5) by power network (4), wherein,
The circuit arrangement (100) is provided with control logic device (3), and the control logic device is defeated according to the current measurer (2)
Go out signal operation electric switch, particularly electronic switch (1), can be disconnected by the power network (4) to electricity by the electric switch
The conveying of stream, wherein, the measurement apparatus (7) of the state for measuring the electrical appliance (5) is additionally provided with, the measurement apparatus
Output end is connected with the control logic device (3), it is characterised in that the control logic device (3) is according to the current measurer
(2) and the measurement apparatus (7) acts on concurrently and essentially simultaneously the signal of the control logic device to operate
Switch (1) is stated, is matched with the state with causing the critical value dynamic of the electric current with the measured electrical appliance (5),
The electric switch (1) is disconnected under the critical value.
2. circuit arrangement (100) according to claim 1, it is characterised in that measurement is flowed through to the electricity of the electrical appliance (5)
At least one measurement apparatus (7) for the voltage that stream and/or measurement are applied on the electrical appliance (5) connects with the electrical appliance (5)
Connect, to measure the state of the electrical appliance (5)；The measurement apparatus is by corresponding to the signal output of measured curtage
To the control logic device.
3. circuit arrangement (100) according to claim 1 or 2, it is characterised in that measurement apparatus (7) output is corresponding
In the signal for the electric current for flowing through the electrical appliance (5), to measure the state of the electrical appliance (5), the control logic device
(3) difference channel is provided with, the difference channel will be by the electric current of the current measurer (2) measurement and by the measurement apparatus
(7) electric current of measurement compares, and operates the electric switch (1) in the case of enough difference between currents with disengagement failure electric current.
4. circuit arrangement (100) according to any one of claim 1 to 3, it is characterised in that the circuit arrangement
(100) or the control logic device (3) of at least described circuit arrangement (100) is made up of a part for integrated circuit or integrated circuit.
5. circuit arrangement (100) according to any one of claim 1 to 4, it is characterised in that the electronic switch (1)
One or more transistors and/or FET and/or CNT and/or FinFET are provided with power implementation.
6. circuit arrangement (100) according to any one of claim 1 to 5, it is characterised in that the control logic device
(3) list is provided with, the list represents, in the current value measured by the current measurer (2) and by the measurement
The state of device (7) measurement, particularly which kind of of current value or magnitude of voltage combination are lower to operate the electronic switch (1) to cut
Disconnected fault current.
7. circuit arrangement (100) according to any one of claim 1 to 6, it is characterised in that the circuit arrangement
(100) multiple parts of multiple separated electrical appliances (5) or single electrical appliance (5), the multiple separated electrical appliance are provided with
Or multiple parts of the single electrical appliance are each configured with single current measurer (2) and single measurement apparatus (7), institute
State current measurer (2) and the measurement apparatus (7) to be connected with the control logic device (3) by separated wire respectively, institute
State control logic device (3) to be only connected with unique electronic switch (1), and the control logic device (3) is in the multiple use
The current measurer (2) of multiple parts of electrical equipment (5) or electrical appliance (5) and the signal value of the measurement apparatus (7)
Whole parts of whole electrical appliances (5) or electrical appliance (5) are caused to pass through the electronic switch (1) and the electricity under appropriate combination
Potential source (6) disconnects.
8. circuit arrangement (100) according to any one of claim 1 to 7, it is characterised in that the voltage source (6) is
For the battery of the onboard power system of motor vehicle, and the electrical appliance (5) be connected with the onboard power system of the motor vehicle it is more
The audio output stages of media apparatus, the multimedia device particularly auto radio.
9. circuit arrangement (100) according to any one of claim 1 to 8, it is characterised in that the voltage source (6) with
Voltage monitoring instrument (11) connects, and the output signal of the voltage monitoring instrument is transported to the control logic device (3), and passes through
Operation of the control logic device (3) to the electronic switch (1) the additionally output signal with the voltage monitoring instrument (11)
It is relevant.
10. the circuit arrangement (100) according to any one of claim 3 to 8, it is characterised in that the circuit arrangement
(100) be provided with the reclosing being connected with the logic circuit (3), and the logic circuit (3) disconnect fault current it
The connection of the electronic switch (1) is prevented by the reclosing afterwards.
11. one kind is used for the method for being disconnected voltage source (6) and at least one electrical appliance (5) by means of circuit arrangement (100), its
In, the circuit arrangement (100) is provided with least one current measurer (2), and the current measurer is directly or indirectly extremely
Few to measure the electric current exported by the voltage source (6) pari passu, the electric current is transported to the electrical appliance by power network (4)
(5), wherein, the circuit arrangement (100) is provided with control logic device (3), and the control logic device is according to the current measurement
The output signal operation electric switch of device (2), particularly electronic switch (1), can be disconnected by the electricity by the electric switch
Conveying of the net (4) to electric current, wherein, the measurement apparatus (7) for the state for measuring the electrical appliance (5) is additionally provided with, it is described
The output end of measurement apparatus is connected with the control logic device (3), it is characterised in that the control logic device (3) is according to
Current measurer (2) and the measurement apparatus (7) act on concurrently and essentially simultaneously the letter of the control logic device
Number come operate it is described switch (1), with causing the critical value dynamic of the electric current shape with the measured electrical appliance (5)
State matches, and the control logic device (3) disconnects the switch (1) under the critical value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016216213.6A DE102016216213A1 (en) | 2016-08-29 | 2016-08-29 | Method and circuit arrangement for disconnecting a voltage source from at least one consumer |
| DE102016216213.6 | 2016-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107797596A true CN107797596A (en) | 2018-03-13 |
Family
ID=61166437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710757166.1A Pending CN107797596A (en) | 2016-08-29 | 2017-08-29 | For the method and circuit arrangement for disconnecting voltage source and at least one electrical appliance |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN107797596A (en) |
| DE (1) | DE102016216213A1 (en) |
| FR (1) | FR3055495B1 (en) |
| IT (1) | IT201700094899A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418177A (en) * | 2018-06-15 | 2018-08-17 | 北京乐鸟科技有限公司 | A kind of arc extinguishing type protective device |
| CN110850329A (en) * | 2018-07-25 | 2020-02-28 | 罗伯特·博世有限公司 | Method for diagnosing a switching device in a motor vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020201632A1 (en) | 2020-02-11 | 2021-08-12 | Volkswagen Aktiengesellschaft | Circuit arrangement and method for disconnecting a voltage source from at least one consumer |
| US11646566B2 (en) | 2020-12-16 | 2023-05-09 | Lear Corporation | Apparatus for permanent supply with a switch |
| EP4274047A1 (en) * | 2022-05-03 | 2023-11-08 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Power distribution system for a vehicle, switching unit for such power distribution system and method for controlling the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681688A (en) * | 2002-09-20 | 2005-10-12 | 因特蒂斯两合公司 | Fuses for motor vehicle switch system |
| CN103779829A (en) * | 2012-10-19 | 2014-05-07 | 鸿富锦精密工业（深圳）有限公司 | Load protection circuit |
| CN104659732A (en) * | 2013-11-18 | 2015-05-27 | 上海协同科技股份有限公司 | Overvoltage and overcurrent protecting circuit |
| CN105324897A (en) * | 2013-07-29 | 2016-02-10 | 宝马股份公司 | Assembly for electrical protection of a potential short-circuit path or an overload in a direct current network having a system-determined, variable source internal resistance |
| WO2016075106A1 (en) * | 2014-11-10 | 2016-05-19 | Leoni Bordnetz-Systeme Gmbh | Motor vehicle supply network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI484710B (en) | 2013-03-19 | 2015-05-11 | Delta Electronics Inc | Electronic fuse apparatus and method of operating the same |
-
2016
- 2016-08-29 DE DE102016216213.6A patent/DE102016216213A1/en not_active Withdrawn
-
2017
- 2017-08-22 IT IT102017000094899A patent/IT201700094899A1/en unknown
- 2017-08-28 FR FR1757897A patent/FR3055495B1/en not_active Expired - Fee Related
- 2017-08-29 CN CN201710757166.1A patent/CN107797596A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681688A (en) * | 2002-09-20 | 2005-10-12 | 因特蒂斯两合公司 | Fuses for motor vehicle switch system |
| CN103779829A (en) * | 2012-10-19 | 2014-05-07 | 鸿富锦精密工业（深圳）有限公司 | Load protection circuit |
| CN105324897A (en) * | 2013-07-29 | 2016-02-10 | 宝马股份公司 | Assembly for electrical protection of a potential short-circuit path or an overload in a direct current network having a system-determined, variable source internal resistance |
| CN104659732A (en) * | 2013-11-18 | 2015-05-27 | 上海协同科技股份有限公司 | Overvoltage and overcurrent protecting circuit |
| WO2016075106A1 (en) * | 2014-11-10 | 2016-05-19 | Leoni Bordnetz-Systeme Gmbh | Motor vehicle supply network |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418177A (en) * | 2018-06-15 | 2018-08-17 | 北京乐鸟科技有限公司 | A kind of arc extinguishing type protective device |
| CN108418177B (en) * | 2018-06-15 | 2024-02-06 | 北京乐鸟科技有限公司 | Arc extinguishing type protection device |
| CN110850329A (en) * | 2018-07-25 | 2020-02-28 | 罗伯特·博世有限公司 | Method for diagnosing a switching device in a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016216213A1 (en) | 2018-03-01 |
| FR3055495A1 (en) | 2018-03-02 |
| FR3055495B1 (en) | 2020-01-31 |
| IT201700094899A1 (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107797596A (en) | For the method and circuit arrangement for disconnecting voltage source and at least one electrical appliance | |
| US8432650B2 (en) | Relay switching method and hybrid relay switch | |
| US7924538B2 (en) | Self-protecting crowbar | |
| EP1724899B1 (en) | Apparatus for short circuit protection | |
| CN107706882B (en) | Electronic fuse for the electric loading in the vehicle electronic circuit system of motor vehicle | |
| US8693156B2 (en) | Protection apparatus for load circuit | |
| JP4701052B2 (en) | Overcurrent detection device | |
| US9899178B2 (en) | Electronic control device including interrupt wire | |
| JP2006299988A (en) | Ignition device for internal combustion engine | |
| US7944664B2 (en) | Safety device for a semiconductor switch | |
| US20150138681A1 (en) | Solid state power controller for an aircraft | |
| CN104569713B (en) | The method of line short or line interruption when connecting inductive load for identification | |
| US20110026177A1 (en) | Using a passive fuse as a current sense element in an electronic fuse circuit | |
| CN106132780A (en) | Control equipment for the multivoltage onboard power system of vehicle | |
| CN104603906A (en) | Fuse failure display | |
| CN108933429A (en) | From trigger-type anti-explosion safety device | |
| JP2003115231A (en) | Arc discharge preventing circuit | |
| US9728954B2 (en) | Protection circuit for robot control device | |
| CN103457505A (en) | Control apparatus for semiconductor switches of an inverter, and method for driving an inverter | |
| EP2957762A1 (en) | Control apparatus | |
| JPH10116552A (en) | Switching device | |
| JPH10336886A (en) | Device for breaking overcurrent in wiring system of vehicle | |
| JP2004236405A (en) | Overcurrent protective circuit | |
| KR20200025910A (en) | System and method for controlling a fuse using detecting a failure mode | |
| CN105659497B (en) | The overvoltage crowbar of power semiconductor and the method for protecting power semiconductor not receive crushing evil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |
|
| RJ01 | Rejection of invention patent application after publication |