CN106300229B - It is a kind of for protecting the device and method of high-tension battery electricity system - Google Patents
It is a kind of for protecting the device and method of high-tension battery electricity system Download PDFInfo
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- CN106300229B CN106300229B CN201510253025.7A CN201510253025A CN106300229B CN 106300229 B CN106300229 B CN 106300229B CN 201510253025 A CN201510253025 A CN 201510253025A CN 106300229 B CN106300229 B CN 106300229B
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Abstract
The invention discloses a kind of equipment for protecting high-tension battery electricity system; comprising: detection device; its signal input part with output end and at least two to receive high voltage connector fault-signal; wherein; at least two signal input part receives the fault-signal of the fault-signal for characterizing positive high voltage connector failure and characterization cathode high voltage connector failure respectively; the detection device is arranged to: when at least one of at least two signal input part receives the fault-signal, exporting shutdown operational order from the output end；Contactor control switch, it is connected between the high voltage connector and the high voltage connector power supply, the control switch is also connect with the output end of the detection device, with power supply of the cutoff high contactor power supply to high voltage connector after receiving the shutdown operational order.Correspondingly, the invention discloses a kind of methods for protecting high-tension battery electricity system.
Description
Technical field
The present invention relates to a kind of protection device and method of electricity system more particularly to a kind of protection high-tension battery electricity consumption systems
The device and method of system.
Background technique
Passenger car usually includes the battery of the electrical system and power drive system for operating vehicle.For example, mixing
Electric vehicle (" HEV "), plug-in hybrid electric vehicle (" PHEV "), fuel cell electric vehicle (" FCEV ") or pure electric vehicle
In (" EV "), high-tension battery can be used to provide power to the electronic or power-transmitting part of vehicle.High-tension battery can store
High voltage electric energy, the high voltage electric energy can be transferred to Vehicular system via the high-voltage bus with positive and negative conducting wire or guide rail.High-tension battery
Positive and negative conducting wire or guide rail can be selectively coupled to via the contactor that one or more selectively switches.However, due to high pressure
Battery provides high voltage electric energy, and the contactor for the high-tension battery electricity system may be bad with the passage for using the time
Change, and then breaks down, and the failure of contactor can bring potential danger for high-tension battery electricity system.
For example, as shown in Figure 1, positive high voltage connector S1 closure before, need first to be closed pre-charge contactor S3 with
And cathode high voltage connector S2, load R is parallel to giveLThe capacitor C at both ends charges.If anode high voltage connector S1 is due to weldering
Failure adhesion is connect, then pre-charge resistance R is short-circuited, and capacitor C just will receive heavy current impact in pre-charging stage.In addition, if
If solder failure occurs for positive high voltage connector S1 and cathode high voltage connector S2, the high-tension battery electricity system beginning will lead to
Eventually in electricity condition is used, there is potential shock hazard.Therefore, when contactor breaks down, in time to high-tension battery electricity consumption
System takes corresponding safeguard measure to be particularly important.
Summary of the invention
An object of the present invention is to provide a kind of equipment for protecting high-tension battery electricity system, which can connect
When tentaculum breaks down, corresponding safeguard measure is taken to high-tension battery electricity system in time.
It is a further object of the present invention to provide a kind of methods for protecting high-tension battery electricity system, use this method
Corresponding protection can be implemented to high-tension battery electricity system in time when contactor breaks down.
According to one of above-mentioned purpose, the invention proposes a kind of equipment for protecting high-tension battery electricity system, packets
It includes:
Detection device is inputted with output end and at least two to receive the signal of high voltage connector fault-signal
End, wherein at least two signal input part receives the fault-signal and characterization for characterizing positive high voltage connector failure respectively
The fault-signal of cathode high voltage connector failure, the detection device are arranged to: at least two signal input part
When at least one receives the fault-signal, shutdown operational order is exported from the output end；
Contactor control switch is connected between the high voltage connector and the high voltage connector power supply, institute
Control switch is stated also to connect with the output end of the detection device, with after receiving the shutdown operational order cutoff high connect
Power supply of the tentaculum power supply to high voltage connector.
It is of the present invention to be used to that the equipment of high-tension battery electricity system to be protected to receive fault-signal by detection device,
When contactor breaks down, detection device exports shutdown operational order according to fault-signal, and then basis should for contactor control switch
Turn off the power supply of operational order cutoff high contactor, high voltage connector its touching in the case where its power supply is cut off
Point can not act, and the power supply line of high-tension battery is also just not turned on, so that high-tension battery electricity system has obtained in time
It is effectively protected.
In equipment of the present invention for protecting high-tension battery electricity system, the fault-signal is to high pressure
The fault detection of contactor, the detection can be achieved by the prior art.Such as the contactor for having auxiliary contactor is selected, pass through
The contacts status of auxiliary contactor is detected to judge the failure of contactor；Or it is integrated in Vehicular battery management system dedicated
Then voltage measurement module measures the voltage of high-tension battery before high voltage connector closure and after closure respectively, and then sentences indirectly
The failure of disconnecting tentaculum.
Under some embodiments, described in the equipment of the present invention for protecting high-tension battery electricity system
Detection device is also connected with Vehicular battery management system, at least one reception of at least two signal input part
When to the fault-signal, no-operation instruction is exported from the output end, the no-operation instruction is for controlling high-tension battery
It stops working.
In above-mentioned this technical solution, when contactor breaks down, Vehicular battery management system is according to stopping operation
Instruction control high-tension battery stops working, to implement dual guarantor to high-tension battery electricity system together with shutdown operational order
Shield, enhances the reliability of protection.Vehicular battery management system is existing control system in existing vehicle.Shutdown operation refers to
It enables and no-operation instruction is exported by the output end of detection device, can be by different output end output, be also possible to
It is exported by same output end.
Under some embodiments, described in the equipment of the present invention for protecting high-tension battery electricity system
Detection device includes:
Control module has as the output end of the detection device output end and as at least two of detection device
The input terminal of signal input part, the control module receive characterization high pressure at least one of its at least two input terminal
When contactor has the faulty fault-signal, shutdown operational order is exported from its output end.
In above-mentioned this technical solution, control module can be any one smart machine for being able to achieve above-mentioned function,
Such as the device that the those skilled in that art such as PLC, single-chip microcontroller know.
Under other embodiment, the fault-signal is logic fault signal.
Therefore further, the detection device includes:
Logic sum gate is patrolled with logical signal output end and as at least two of at least two signal input part
Volume signal input part, the logic sum gate receive described patrol at least one of its at least two logic signal input end
When collecting fault-signal, the logical operation signal of characterization shutdown operation is exported from its logical signal output end；
Controller, input terminal are connect with the logical signal output end of the logic sum gate, the output end of the controller
As the output end of the detection device, the controller exports institute after the logical operation signal for receiving characterization shutdown operation
State shutdown operational order.
In the above-mentioned technical solutions, using logic sum gate to the fault-signal and characterization for characterizing positive high voltage connector failure
The fault-signal of cathode high voltage connector failure carries out logic or processing, to meet: if two logical signals wherein it
One is the logic fault signal of characterization failure, then exports the logical operation signal of characterization shutdown operation.
Further, under some embodiments, the controller is realized using Vehicular battery management system.Vehicular battery
Management system is existing control system in existing vehicle.
Under other embodiment, the controller may be the external control independently of Vehicular battery management system
Device processed.
In addition, under some embodiments, Vehicular battery management system detects positive high voltage connector and cathode high-voltage connecting
The failure of tentaculum, and issue the fault-signal for characterizing positive high voltage connector failure and characterization cathode high voltage connector failure
The fault-signal.That is, under this technical solution, the failure of positive high voltage connector and cathode high voltage connector
It is to be detected by Vehicular battery management system existing in vehicle.
It is of the present invention for protecting high pressure under other embodiment unlike above-mentioned technical proposal
The equipment of battery system also includes at least two high voltage connector fault detection means, believes respectively with described at least two
Number input terminal is correspondingly connected with, and described two high voltage connector fault detection means detect positive high voltage connector respectively and cathode is high
It crimps the failure of tentaculum and sends the fault-signal for characterizing positive high voltage connector failure and characterization cathode high voltage connector respectively
The fault-signal of failure.That is, in this technical solution, not instead of by Vehicular battery management system, by addition setting
The high voltage connector fault detection means set detects the failure of positive high voltage connector and cathode high voltage connector.
Further, in the above-mentioned equipment for protecting high-tension battery electricity system, the high voltage connector failure inspection
Surveying device includes:
Detection circuit, with input terminal and output end, the input terminal of the detection circuit is connect with high voltage connector, institute
It states after the electric current formed high-voltage signal for flowing through the high voltage connector is converted to corresponding detection signal by detection circuit, from inspection
The output end of slowdown monitoring circuit exports；
Breakdown judge module is connect with the output end of the detection circuit, and the breakdown judge module is according to the height
Tentaculum is crimped when receiving the operational order of " opening " or " closed ", whether the detection signal for detecting the detection circuit output is sent out
State transition has been given birth to, to judge whether high voltage connector has occurred failure, and has issued characterization high voltage connector failure
The fault-signal.
In this technical solution, the failure of contactor is detected by setting detection circuit and breakdown judge module, from
And avoid hardware design bring increased costs problem in the prior art.In addition, due to the detection circuit directly with contact
Device connection, the low-voltage signal of detection circuit output directly reflect the failure of contactor, thus required detection time also less than
Detection time in the prior art.
The operation for carrying out fault detection to high-tension battery contactor using this technical solution is also very easy: firstly, pressing
More solito operating process, contactor receive the operational order of " opening " or " closed "；Then breakdown judge module is according to detection electricity
The detection signal of road transmission carries out breakdown judge: contactor is when receiving the operational order of " opening " or " closed ", if detection
State transition has occurred (for example, jump to low level from high level, or from low electricity in the detection signal of the output end output of circuit
It is flat to jump to high level), then judge that contactor does not break down；If the detection non-generating state of signal jumps, judge to contact
Failure has occurred in device.
In some embodiments, above-mentioned detection circuit includes: signal conversion module, and input terminal and high voltage connector connect
It connecing, output end is connect with breakdown judge module, after the high-voltage signal is converted to low-voltage signal by the signal conversion module,
It is exported by its output end to the breakdown judge module using low-voltage signal as the detection signal.
In this technical solution, breakdown judge module be by detection circuit transmit low-voltage signal state transition come
Judge whether contactor has occurred failure, such as contactor, when receiving the operational order of " opening " or " closed ", detection is electric
The signal of road transmission has jumped to high level from low level.
In other embodiment, the detection circuit includes:
Signal conversion module, input terminal are connect with high voltage connector, and the signal conversion module is by the high-voltage signal
It is exported after being converted to low-voltage signal；
The output end of logic module output, input terminal and signal conversion module connects, the output end of logic module output
It is connect with the breakdown judge module, the low-voltage signal from signal conversion module is converted to logic by the logic module output
After signal, exported by its output end to the breakdown judge module using logical signal as the detection signal.
In this optional technical solution, breakdown judge module is the state of the logical signal transmitted by detection circuit
It jumps to judge whether contactor has occurred failure, such as in contactor in the operational order for receiving " opening " or " closed "
When, the logical signal of detection circuit transmission has jumped to " 1 " from " 0 ".Breakdown judge module can by single-chip microcontroller, programmable patrol
The device for collecting controller or other software and combination of hardware is realized.
Under some embodiments, further, above-mentioned signal conversion module includes:
Photoelectrical coupler, input terminal are concatenated by divider resistance with the high voltage connector and high-tension battery, photoelectricity coupling
The output end of clutch exports the low-voltage signal as the output end of the signal conversion module；
Low-tension supply is connect by resistance with the output end of the photoelectrical coupler.
Preferably, in above-mentioned all equipment for protecting high-tension battery electricity system, the control switch is NPN tri-
Pole pipe, the base stage of the NPN triode are connect with the output end of the detection device, the collector of the NPN triode and institute
The connection of high voltage connector power supply is stated, the emitter of the NPN triode is connect with the high voltage connector.
A further object based on the technical program, the present invention also provides a kind of for protecting high-tension battery electricity system
Method comprising step:
Receive the failure letter of the fault-signal for characterizing positive high voltage connector failure and characterization cathode high voltage connector failure
Number；
In at least one for receiving the fault-signal, shutdown operational order is issued；
Power supply according to shutdown operational order cutoff high contactor power supply to high voltage connector.
Method of the present invention for protecting high-tension battery electricity system, which passes through, receives fault-signal, sends out in contactor
When raw failure, shutdown operational order is exported according to fault-signal, according to the power supply of the shutdown operational order cutoff high contactor
Power supply, high voltage connector can not act its contact in the case where its power supply is cut off, the power supply line of high-tension battery
It is just not turned on, so that high-tension battery electricity system has obtained timely and effectively protecting.
In addition, the method for the present invention for protecting high-tension battery electricity system may be used also under some embodiments
To export no-operation instruction from the output end comprising steps of at least one for receiving the fault-signal,
High-tension battery is controlled according to no-operation instruction to stop working.
Preferably, in the method for the present invention for protecting high-tension battery electricity system, the failure letter
Number be logic fault signal.
Further, in the above-mentioned method for protecting high-tension battery electricity system, the shutdown operational order according to
The logical operation signal of characterization shutdown operation issues, and the logical operation signal is receiving the logic fault signal at least
One of them when generate and export.
In addition, the present invention also provides a kind of vehicle, with the above-mentioned equipment for protecting high-tension battery electricity system.
It is of the present invention to be used to protect the equipment of high-tension battery electricity system when contactor breaks down, it can be right in time
High-tension battery electricity system takes corresponding safeguard measure.
Correspondingly, using the method for the present invention for protecting high-tension battery electricity system, can occur in contactor
When failure, corresponding protection is implemented to high-tension battery electricity system in time.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of high-tension battery electricity system.
Fig. 2 is the principle of equipment in one embodiment of the present invention for protecting high-tension battery electricity system
Figure.
Fig. 3 is of the present invention for protecting a kind of high-voltage connecting of the equipment of high-tension battery electricity system under real mode
The structural block diagram of tentaculum fault detection means.
Fig. 4 is the detection electricity of the present invention for protecting the equipment of high-tension battery electricity system under a kind of real mode
The schematic block diagram on road.
Fig. 5 is of the present invention for protecting detection of the equipment of high-tension battery electricity system under another real mode
The schematic block diagram of circuit.
Fig. 6 is the detection electricity of the present invention for protecting the equipment of high-tension battery electricity system under a kind of real mode
The circuit diagram on road.
Specific embodiment
It is used to protect in the present embodiment of the present invention below in conjunction with Figure of description and specific embodiment
The device and method of shield high-tension battery electricity system are further described in detail, but the detailed description is not constituted to this hair
Bright limitation.
Fig. 2 shows of the present invention for protecting the equipment of high-tension battery electricity system in one embodiment
Schematic diagram.As shown in Fig. 2, the equipment for protecting high-tension battery electricity system of the present embodiment includes: detection device, the detection
Device includes a logic sum gate, has a logical signal output end and two logic signal input ends, including first patrols
Signal input part and the second logic signal input end are collected, which further includes the controller of Vehicular battery management system,
The connection of the logical signal output end of input terminal and logic sum gate；Contactor control switch, the contactor control switch are tri- pole NPN
Pipe, the base stage of the NPN triode are connect with the output end of the controller of Vehicular battery management system, collector and high voltage connector
The feeder ear anode of power supply+12V connection, emitter and high voltage connector connects, and the feeder ear cathode of high voltage connector connects
Ground.
Corresponding foregoing circuit structure, the method for the present invention for protecting high-tension battery electricity system are applied to this reality
Example is applied to include the following steps:
Two logic signal input ends of logic sum gate receive characterization anode high voltage connector S1 and cathode high-voltage connecting respectively
The logic fault signal of tentaculum S2 failure；
Logic sum gate is receiving the faulty logic fault signal of characterization anode high voltage connector S1 tool and characterization cathode
When high voltage connector S2 has at least one of faulty logic fault signal, characterization shutdown behaviour is issued by its output end
The logical operation signal of work, it is specific as shown in table 1；
The controller of Vehicular battery management system issues shutdown operation according to the logical operation signal of characterization shutdown operation and refers to
It enables, base voltage of the shutdown operational order by control as the NPN triode of contactor control switch controls NPN triode
Cut-off, thus power supply of the cutoff high contactor power supply+12V to high voltage connector.
Table 1
In some embodiments, controller also issues no-operation instruction while issuing and turning off operational order, should
No-operation instruction control high-tension battery stops working, to implement together with shutdown operational order to high-tension battery electricity system
Duplicate protection enhances the reliability of protection.
In addition, the controller of Vehicular battery management system, which also can be used as control module, directly receives the positive high pressure contact of characterization
The fault-signal of device S1 and cathode high voltage connector S2 failure, and it is faulty receiving characterization anode high voltage connector S1 tool
When fault-signal and characterization cathode high voltage connector S2 have at least one of faulty fault-signal, shutdown operation is issued
Instruction (or being simultaneously emitted by shutdown operational order and no-operation instruction).Certainly, in other embodiment, above-mentioned vehicle
The controller of battery management system can also be substituted by the peripheral control unit independently of Vehicular battery management system.
In some embodiments, the failure of positive high voltage connector S1 and cathode high voltage connector S2 can pass through vehicle
Battery management system detects, i.e., Vehicular battery management system issue the fault-signal for characterizing positive high voltage connector S1 failure and
Characterize the fault-signal of cathode high voltage connector S2 failure.
In other embodiment, the failure of positive high voltage connector S1 and cathode high voltage connector S2 can pass through
Two high voltage connector fault detection means set in addition detect respectively.
For example, Fig. 3 shows high voltage connector fault detection means structural block diagram in one embodiment.Such as Fig. 3
Shown, in this embodiment, there are two contactors for detected high-tension battery contactor circuit tool, i.e., just with high-tension battery B
The positive contactor S1 of pole connection and the cathode contact device S2 connecting with high-tension battery cathode, high-tension battery B are connect by anode
Tentaculum S1 and cathode contact device S2 and load RLBoth ends be connected.In addition, detection circuit also includes the first detection circuit and second
Detection circuit is connect with positive contactor S1 and cathode contact device S2 respectively: corresponding, breakdown judge module also includes
Fisrt fault judgment module and the second breakdown judge module, it is corresponding with the first detection circuit and the second detection circuit respectively to connect
It connects.Wherein, the electric current formed high-voltage signal for flowing through positive contactor S1 is converted to corresponding detection letter by the first detection circuit
After number, exported from the output end of the first detection circuit；Fisrt fault judgment module is receiving " opening " according to positive contactor S1
Or " closed " operational order when, the first detection circuit output detection signal whether state transition has occurred, to be connect to anode
Whether tentaculum S1, which has occurred failure, is judged and is issued the fault-signal for characterizing positive high voltage connector S1 failure, failure letter
Number it can be logical signal.The electric current formed high-voltage signal for flowing through cathode contact device S2 is converted to phase by the second detection circuit
After the detection signal answered, exported from the output end of the second detection circuit；Second breakdown judge module exists according to cathode contact device S2
When receiving the operational order of " opening " or " closed ", whether the detection signal of the second detection circuit output has occurred state transition,
The failure letter that failure is judged and issues characterization cathode high voltage connector S2 failure whether has occurred to cathode contact device S2
Number, which can be logical signal.
Fig. 4 illustrates the block diagram knot of the detection circuit of high voltage connector fault detection means in one embodiment
Structure.In this embodiment, detection circuit includes: signal conversion module, and input terminal receives high-voltage signal, signal modulus of conversion
After high-voltage signal is converted to low-voltage signal by block, by its output end using low-voltage signal as the detection signal in the technical program
It exports and gives breakdown judge module.
Fig. 5 illustrates the block diagram knot of the detection circuit of the high voltage connector fault detection means under another embodiment
Structure.In this embodiment, stating detection circuit includes: signal conversion module, and input terminal receives high-voltage signal, signal conversion
To logic module output connected to it, logic is defeated for output after high-voltage signal from contactor is converted to low-voltage signal by module
The low-voltage signal that signal conversion module exports is converted to corresponding logical signal by module out, then by the logical signal export to
Breakdown judge module.
This breakdown judge module illustrated in Figure 4 is connect according to the low-voltage signal that signal conversion module is transmitted
The embodiment of tentaculum breakdown judge will be described in further detail below by a specific scheme.It needs to illustrate
, those skilled in the art can also be realized by other way that it knows.
Fig. 6 shows the circuit of the detection circuit in high voltage connector fault detection means in one embodiment
Figure.As shown in fig. 6, in the present embodiment, detection circuit includes the first detection circuit and use for detecting positive contactor S1
In the second detection circuit of detection cathode contact device S2.First detection circuit includes: the first photoelectrical coupler T1, divider resistance
R1, divider resistance R3 and resistance R5；Wherein, the electrode input end of the first photoelectrical coupler T1 passes through divider resistance R1 and first
One end of protective module connects, and with positive contactor S1 and load RLOne end connection；First photoelectrical coupler T1's is negative
Pole input terminal is connect by divider resistance R3 with the other end of the first protective module, and is connected to the cathode of high-tension battery B；First
The collector of the phototriode of photoelectrical coupler T1 exports the low-voltage signal as detection signal as the first output end
Signal0, the first output end of the first photoelectrical coupler T1 also pass through the anode+5V of resistance R5 connection low-tension supply, the first light
The emitter of electric coupler T1 is grounded as second output terminal.Please continue to refer to Fig. 6, the second detection circuit includes: the second photoelectricity
Coupler T2, divider resistance R2, divider resistance R4 and resistance R6；Wherein, the electrode input end of the second photoelectrical coupler T2 is logical
It crosses divider resistance R2 to connect with one end of the second protective module, and is connected to the anode of high-tension battery B, the second photoelectrical coupler T2
Negative input connect with the other end of the second protective module by divider resistance R4, and with cathode contact device S2 and load RL
The other end connection；The collector of the phototriode of second photoelectrical coupler T2 is exported as the first output end as detection letter
Number low-voltage signal Signal1, the second photoelectrical coupler T2 the first output end by the anode of resistance R6 connection low-tension supply+
The emitter of 5V, the second photoelectrical coupler T2 are grounded as second output terminal.
The high voltage connector fault detection method of above-mentioned detection circuit includes:
First signal conversion module is converted to the electric current formed high-voltage signal for flowing through positive contactor S1 corresponding low
Signal is pressed, and is exported using low-voltage signal as detection signal Signal0 by its output end；It receives anode contactor S1 " opening "
Or the operational order of " closed "；Fisrt fault judgment module is according to positive contactor S1 in the operation for receiving " opening " or " closed "
Whether generating state jumps to judge whether positive contactor S1 breaks down the detection signal Signal0 exported when instruction: if
State transition has occurred in detection signal Signal0, then judges that positive contactor S1 does not break down；If detecting signal Signal0
Non- generating state jumps, then judges that failure has occurred in positive contactor S1, and further judge the type of failure；Specific such as table 2
It is shown.
Equally, second signal conversion module is converted to the electric current formed high-voltage signal for flowing through cathode contact device S2 accordingly
Low-voltage signal, and exported low-voltage signal as detection signal Signal1 by its output end；Receive cathode contact device S2
The operational order of " opening " or " closed "；Second breakdown judge module is receiving " opening " or " closed " according to cathode contact device S2
Operational order when the detection signal Signal1 that exports whether generating state jump judge cathode contact device S2 whether occur therefore
Barrier: if state transition has occurred in detection signal Signal1, judge that cathode contact device S2 does not break down；If detecting signal
The non-generating state of Signal1 jumps, then judges that failure has occurred in cathode contact device S2, and further judge the type of failure；Tool
Body is as shown in table 3.
Table 2
Table 3
In the above scheme, the first protective module and the second protective module pass through for protecting corresponding detection circuit
Overvoltage protection and/or filtering protection are to protect detection circuit.
Failure detection result in above-mentioned table 2 and table 3 is by breakdown judge module according to above-mentioned high voltage connector fault detection
Obtained by method, breakdown judge module characterizes positive extra-high voltage according to the failure detection result in above-mentioned table 2 and table 3, output accordingly
The fault-signal of contactor S1 and cathode high voltage connector S2 failure, the fault-signal can be logic fault signal.For example, table
When failure detection result is solder failure and open-circuit fault in 3, then breakdown judge module output logic signal 1, characterization cathode are high
It is faulty to crimp tentaculum S2.In another example in table 3 when failure detection result fault-free, then breakdown judge module output logic signal
0, characterize cathode high voltage connector S2 fault-free.
It should be noted that the above list is only specific embodiments of the present invention, it is clear that the present invention is not limited to above real
Example is applied, there are many similar variations therewith.If those skilled in the art directly exported from present disclosure or
All deformations associated, are within the scope of protection of the invention.
Claims (17)
1. a kind of equipment for protecting high-tension battery electricity system characterized by comprising
Detection device, the signal input part with output end and at least two to receive high voltage connector fault-signal,
In, at least two signal input part is respectively used to receive the fault-signal for characterizing positive high voltage connector failure and characterization is negative
The fault-signal of extra-high voltage contactor failure, the detection device are arranged to: at least two signal input part extremely
When one of them receives the fault-signal less, shutdown operational order is exported from the output end；Wherein, the detection device
Including control module, there are the output end as the detection device output end and at least two signals as detection device
The input terminal of input terminal, the control module receive the fault-signal at least one of its at least two input terminal
When, shutdown operational order is exported from its output end；
Contactor control switch is connected between the high voltage connector and the high voltage connector power supply, the control
System switch is also connect with the output end of the detection device, with the cutoff high contactor after receiving the shutdown operational order
Power supply of the power supply to high voltage connector；
Wherein, the detection device is also connected with Vehicular battery management system, at least two signal input part extremely
When one of them receives the fault-signal less, no-operation instruction is exported from the output end, which uses
It stops working in control high-tension battery.
2. a kind of equipment for protecting high-tension battery electricity system characterized by comprising
Detection device, the signal input part with output end and at least two to receive high voltage connector fault-signal,
In, at least two signal input part is respectively used to receive the fault-signal for characterizing positive high voltage connector failure and characterization is negative
The fault-signal of extra-high voltage contactor failure, the detection device are arranged to: at least two signal input part extremely
When one of them receives the fault-signal less, shutdown operational order is exported from the output end；
Contactor control switch is connected between the high voltage connector and the high voltage connector power supply, the control
System switch is also connect with the output end of the detection device, with the cutoff high contactor after receiving the shutdown operational order
Power supply of the power supply to high voltage connector；
Wherein, the detection device is also connected with Vehicular battery management system, at least two signal input part extremely
When one of them receives the fault-signal less, no-operation instruction is exported from the output end, which uses
It stops working in control high-tension battery；Wherein the fault-signal is logic fault signal.
3. the equipment as claimed in claim 2 for protecting high-tension battery electricity system, which is characterized in that the detection device
Include:
Logic sum gate, at least two logics with logical signal output end and as at least two signal input part are believed
Number input terminal, the logic sum gate its at least two logic signal input end at least one receive the logic therefore
When hindering signal, the logical operation signal of characterization shutdown operation is exported from its logical signal output end；
Controller, input terminal are connect with the logical signal output end of the logic sum gate, the output end conduct of the controller
The output end of the detection device, the controller export the shutdown operation after receiving the logical operation signal and refer to
It enables.
4. the equipment as claimed in claim 3 for protecting high-tension battery electricity system, which is characterized in that the controller is adopted
It is realized with Vehicular battery management system.
5. the equipment for protecting high-tension battery electricity system as claimed in claim 3, which is characterized in that the controller is
Independently of the peripheral control unit of Vehicular battery management system.
6. the equipment as described in claim 1 for protecting high-tension battery electricity system, which is characterized in that Vehicular battery management
The failure of system detection anode high voltage connector and cathode high voltage connector, and issue the institute for characterizing positive high voltage connector failure
It states fault-signal and characterizes the fault-signal of cathode high voltage connector failure.
7. the equipment as described in claim 1 for protecting high-tension battery electricity system, which is characterized in that also include at least two
A high voltage connector fault detection means is correspondingly connected with at least two signal input part, described two high pressures respectively
Contactor fault detection means detects the failure of positive high voltage connector and cathode high voltage connector respectively and sends characterization respectively
The fault-signal of positive high voltage connector failure and the fault-signal of characterization cathode high voltage connector failure.
8. the equipment as claimed in claim 7 for protecting high-tension battery electricity system, which is characterized in that the high pressure contact
Device fault detection means includes:
Detection circuit, with input terminal and output end, the input terminal of the detection circuit is connect with high voltage connector, the inspection
After the electric current formed high-voltage signal for flowing through the high voltage connector is converted to corresponding detection signal by slowdown monitoring circuit, from detection electricity
The output end on road exports；
Breakdown judge module is connect with the output end of the detection circuit, and the breakdown judge module is according to the high-voltage connecting
When receiving the operational order of " opening " or " closed ", whether the detection signal for detecting the detection circuit output has occurred tentaculum
State transition to judge whether high voltage connector has occurred failure, and issues the described of characterization high voltage connector failure
Fault-signal.
9. the equipment as claimed in claim 8 for protecting high-tension battery electricity system, which is characterized in that the detection circuit
It include: signal conversion module, input terminal is connect with high voltage connector, and output end is connect with breakdown judge module, the letter
After the high-voltage signal is converted to low-voltage signal by number conversion module, low-voltage signal is passed through it as the detection signal and is exported
End output is to the breakdown judge module.
10. the equipment as claimed in claim 8 for protecting high-tension battery electricity system, which is characterized in that the detection electricity
Road includes:
Signal conversion module, input terminal are connect with high voltage connector, and the signal conversion module converts the high-voltage signal
To be exported after low-voltage signal；
The output end of logic module output, input terminal and signal conversion module connects, the output end of logic module output and institute
The connection of breakdown judge module is stated, the low-voltage signal from signal conversion module is converted to logical signal by the logic module output
Afterwards, it is exported by its output end to the breakdown judge module using logical signal as the detection signal.
11. the equipment as claimed in claim 10 for protecting high-tension battery electricity system, which is characterized in that the signal turns
Changing the mold block includes:
Photoelectrical coupler, input terminal are concatenated by divider resistance with the high voltage connector and high-tension battery, photoelectrical coupler
Output end export the low-voltage signal as the output end of the signal conversion module；
Low-tension supply is connect by resistance with the output end of the photoelectrical coupler.
12. the equipment for protecting high-tension battery electricity system as described in any one of claim 1-11, feature exist
In the control switch is NPN triode, and the base stage of the NPN triode is connect with the output end of the detection device, described
The collector of NPN triode is connect with the high voltage connector power supply, the emitter of the NPN triode and the high pressure
Contactor connection.
13. a kind of method for protecting high-tension battery electricity system, which is characterized in that comprising steps of
Receive the fault-signal of the fault-signal for characterizing positive high voltage connector failure and characterization cathode high voltage connector failure；
In at least one for receiving the fault-signal, issues shutdown operational order and export stopping behaviour from output end
It instructs；
Power supply according to shutdown operational order cutoff high contactor power supply to high voltage connector, according to no-operation instruction
Control high-tension battery stops working.
14. the method as claimed in claim 13 for protecting high-tension battery electricity system, which is characterized in that the failure letter
Number be logic fault signal.
15. the method as claimed in claim 14 for protecting high-tension battery electricity system, which is characterized in that the shutdown behaviour
It instructs and is issued according to the logical operation signal of characterization shutdown operation, the logical operation signal is receiving the positive extra-high voltage of characterization
Contactor has faulty logic fault signal and characterization cathode high voltage connector has faulty logic fault signal at least
One of them when generate and export.
16. a kind of vehicle has and is used to protect high-tension battery electricity system as described in any one of claim 1-11
Equipment.
17. a kind of vehicle has the equipment as claimed in claim 12 for protecting high-tension battery electricity system.
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| CN201510253025.7A CN106300229B (en) | 2015-05-19 | 2015-05-19 | It is a kind of for protecting the device and method of high-tension battery electricity system |
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| CN201510253025.7A CN106300229B (en) | 2015-05-19 | 2015-05-19 | It is a kind of for protecting the device and method of high-tension battery electricity system |
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| CN106300229B true CN106300229B (en) | 2019-04-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106708685A (en) * | 2017-02-24 | 2017-05-24 | 上海与德信息技术有限公司 | Fault detection method and electronic equipment |
| CN110907688B (en) * | 2018-09-17 | 2021-01-29 | 宁德时代新能源科技股份有限公司 | Power failure detection circuit and control method thereof |
| US11029360B2 (en) * | 2018-12-30 | 2021-06-08 | Vitesco Technologies USA, LLC | Electric current protection circuit and method of using same |
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