CN106300229A - A kind of for protecting equipment and the method for high-tension battery electricity system - Google Patents
A kind of for protecting equipment and the method for high-tension battery electricity system Download PDFInfo
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- CN106300229A CN106300229A CN201510253025.7A CN201510253025A CN106300229A CN 106300229 A CN106300229 A CN 106300229A CN 201510253025 A CN201510253025 A CN 201510253025A CN 106300229 A CN106300229 A CN 106300229A
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Abstract
The invention discloses a kind of equipment for protecting high-tension battery electricity system; comprising: detection device; it has outfan and at least two in order to receive the signal input part of high voltage connector fault-signal; wherein; described at least two signal input part receives the fault-signal characterizing positive pole high voltage connector fault and the fault-signal characterizing negative pole high voltage connector fault respectively; described detection device is arranged to: when at least one of described at least two signal input part receives described fault-signal, turns off operational order from the output of described outfan；Catalyst controls switch, it is connected between described high voltage connector and described high voltage connector power supply, the described switch also outfan with described detection device that controls is connected, to break the power supply to high voltage connector of the high voltage connector power supply receiving described shutoff operational order rear cutout.Correspondingly, the invention discloses a kind of method for protecting high-tension battery electricity system.
Description
Technical field
The present invention relates to a kind of protection equipment and the method for electricity system, particularly relate to a kind of equipment protecting high-tension battery electricity system and method.
Background technology
Passenger car usually includes the battery for the electrical system and power drive system operating vehicle.Such as, in hybrid electric vehicle (" HEV "), plug-in hybrid electric vehicle (" PHEV "), fuel cell electric vehicle (" FCEV ") or pure electric vehicle (" EV "), can be used for high-tension battery providing power to the electronic of vehicle or power-transmitting part.High-tension battery can store high voltage electric energy, and this high voltage electric energy can be transferred to Vehicular system via the high-voltage bus with positive and negative wire or guide rail.High-tension battery can be selectively coupled to positive and negative wire or guide rail via the catalyst that one or more selectivitys switch.But, owing to high-tension battery provides high voltage electric energy, the catalyst for this high-tension battery electricity system deteriorates such as the passage of the time of use, and then breaks down, and the fault of catalyst can bring potential danger for high-tension battery electricity system.
Such as, as it is shown in figure 1, before positive pole high voltage connector S1 closes, need first to close pre-charge contactor S3 and negative pole high voltage connector S2, it is parallel to load R to giveLThe electric capacity C charging at two ends.If positive pole high voltage connector S1 is due to solder failure adhesion, then pre-charge resistance R is shorted, and electric capacity C will be by heavy current impact in pre-charging stage.If additionally, positive pole high voltage connector S1 and negative pole high voltage connector S2 all occurs solder failure, high-tension battery electricity system can be caused to be in all the time with electricity condition, there is potential shock hazard.Therefore, when catalyst breaks down, take corresponding protective measure to be particularly important high-tension battery electricity system in time.
Summary of the invention
An object of the present invention is to provide a kind of equipment for protecting high-tension battery electricity system, and high-tension battery electricity system can be taked corresponding protective measure when catalyst breaks down by this equipment in time.
It is a further object of the present invention to provide a kind of method for protecting high-tension battery electricity system, use the method when catalyst breaks down, high-tension battery electricity system can be implemented corresponding protection in time.
According to one of above-mentioned purpose, the present invention proposes a kind of equipment for protecting high-tension battery electricity system, comprising:
Detection device, it has outfan and at least two in order to receive the signal input part of high voltage connector fault-signal, wherein, described at least two signal input part receives the fault-signal characterizing positive pole high voltage connector fault and the fault-signal characterizing negative pole high voltage connector fault respectively, described detection device is arranged to: when at least one of described at least two signal input part receives described fault-signal, turns off operational order from the output of described outfan；
Catalyst controls switch, it is connected between described high voltage connector and described high voltage connector power supply, the described switch also outfan with described detection device that controls is connected, to break the power supply to high voltage connector of the high voltage connector power supply receiving described shutoff operational order rear cutout.
Of the present invention for protecting the equipment of high-tension battery electricity system to receive fault-signal by detection device; when catalyst breaks down; detection device turns off operational order according to fault-signal output; catalyst controls switch then according to the power supply of this shutoff operational order cutoff high catalyst; its contact cannot action in the case of its power supply is cut-off for high voltage connector; the supply line of high-tension battery is the most just not turned on, so that high-tension battery electricity system has obtained protecting timely and effectively.
In equipment for protecting high-tension battery electricity system of the present invention, described fault-signal comes from the fault detect to high voltage connector, and this detection can be achieved by the prior art.Such as select the catalyst with auxiliary contactor, judged the fault of catalyst by the contacts status of detection auxiliary contactor；Or integrated special voltage measurement module in Vehicular battery management system, then and measures the voltage of high-tension battery before high voltage connector closes respectively, and then indirectly judges the fault of catalyst after Guan Bi.
Under some embodiments; in the equipment for protecting high-tension battery electricity system of the present invention; described detection device is also connected with Vehicular battery management system; when at least one of described at least two signal input part receives described fault-signal; exporting no-operation instruction from described outfan, this no-operation instruction is used for controlling high-tension battery and quits work.
In above-mentioned this technical scheme; when catalyst breaks down; Vehicular battery management system controls high-tension battery according to no-operation instruction and quits work, thus together with turning off operational order, high-tension battery electricity system is implemented duplicate protection, enhances the reliability of protection.Vehicular battery management system is existing control system in existing vehicle.Turning off the outfan output by detection device of operational order and no-operation instruction, it can be by different outfan output, it is also possible to is to be exported by same outfan.
Under some embodiments, in the equipment for protecting high-tension battery electricity system of the present invention, described detection device includes:
Control module, it has the outfan as described detection device outfan and the input of at least two signal input part as detection device, described control module at least one of its at least two input receive sign high voltage connector have out of order described fault-signal time, turn off operational order from the output of its outfan.
In above-mentioned this technical scheme, control module can be that any one can realize the smart machine of above-mentioned functions, the device that such as those skilled in that art such as PLC, single-chip microcomputer know.
Under other embodiment, described fault-signal is logic fault signal.
The most further, described detection device includes:
Logic sum gate, it has logical signal outfan and at least two logic signal input end as described at least two signal input part, described logic sum gate, when at least one of its at least two logic signal input end receives described logic fault signal, characterizes the logical operation signal turning off operation from the output of its logical signal outfan；
Controller, its input is connected with the logical signal outfan of described logic sum gate, and the outfan of described controller exports described shutoff operational order as the outfan of described detection device, described controller after receiving the logical operation signal characterizing shutoff operation.
In technique scheme, the fault-signal utilizing logic sum gate fault-signal and sign negative pole high voltage connector fault to characterizing positive pole high voltage connector fault carries out logic or process, thus meet: as long as one of them of two logical signals is to characterize the logic fault signal of fault, then output characterizes the logical operation signal turning off operation.
Further, under some embodiments, described controller uses Vehicular battery management system to realize.Vehicular battery management system is existing control system in existing vehicle.
Under other embodiment, described controller can also be the peripheral control unit independent of Vehicular battery management system.
It addition, under some embodiments, Vehicular battery management system detection positive pole high voltage connector and the fault of negative pole high voltage connector, and send the described fault-signal characterizing positive pole high voltage connector fault and the described fault-signal characterizing negative pole high voltage connector fault.It is to say, under this technical scheme, the fault of positive pole high voltage connector and negative pole high voltage connector is by existing Vehicular battery management system detection in vehicle.
Unlike technique scheme; under other embodiment; of the present invention for protecting the equipment of high-tension battery electricity system the most at least to include two high voltage connector failure detectors; its connection corresponding with described at least two signal input part respectively, said two high voltage connector failure detector detects positive pole high voltage connector and the fault of negative pole high voltage connector respectively and sends the fault-signal characterizing positive pole high voltage connector fault and the fault-signal characterizing negative pole high voltage connector fault respectively.It is to say, in this technical scheme, be not to be managed system by Vehicular battery, but by the high voltage connector failure detector detection positive pole high voltage connector additionally arranged and the fault of negative pole high voltage connector.
Further, in the above-mentioned equipment for protecting high-tension battery electricity system, described high voltage connector failure detector includes:
Testing circuit, it has input and outfan, the input of described testing circuit is connected with high voltage connector, after the electric current formed high-voltage signal flowing through described high voltage connector is converted to detect signal accordingly by described testing circuit, exports from the outfan of testing circuit；
Breakdown judge module, it is connected with the outfan of described testing circuit, described breakdown judge module according to described high voltage connector when receiving the operational order of " opening " or " closed ", whether the detection signal detecting the output of described testing circuit there occurs state transition, so that whether high voltage connector be there occurs that fault judges, and send the described fault-signal characterizing high voltage connector fault.
In this technical scheme, by arranging testing circuit and breakdown judge module detects the fault of catalyst, thus avoid the cost that hardware designs of the prior art brings and increase problem.Further, since this testing circuit is directly connected with catalyst, the low-voltage signal of testing circuit output directly reflects the fault of catalyst, and the therefore required detection time is also less than the detection time of the prior art.
The operation using this technical scheme that high-tension battery catalyst is carried out fault detect is the easiest: first, and according to normal operation, catalyst receives the operational order of " opening " or " closed "；Then breakdown judge module carries out breakdown judge according to the detection signal that testing circuit transmits: catalyst is when receiving the operational order of " opening " or " closed ", if the detection signal of the outfan output of testing circuit there occurs that state transition is (such as, low level is jumped to from high level, or jump to high level from low level), then judge that catalyst does not breaks down；If detection signal does not occurs state transition, then judge that catalyst there occurs fault.
In some embodiments, above-mentioned testing circuit includes: signal conversion module, its input is connected with high voltage connector, its outfan is connected with breakdown judge module, after described high-voltage signal is converted to low-voltage signal by described signal conversion module, low-voltage signal is exported to described breakdown judge module as described detection signal by its outfan.
In this technical scheme, breakdown judge module is that the state transition of the low-voltage signal transmitted by testing circuit judges whether catalyst there occurs fault, such as catalyst is when receiving the operational order of " opening " or " closed ", and the signal of testing circuit transmission has jumped to high level from low level.
In other embodiment, described testing circuit includes:
Signal conversion module, its input is connected with high voltage connector, and described signal conversion module exports after described high-voltage signal is converted to low-voltage signal；
Logic module output, its input is connected with the outfan of signal conversion module, the outfan of logic module output is connected with described breakdown judge module, after low-voltage signal from signal conversion module is converted to logical signal by described logic module output, logical signal is exported to described breakdown judge module as described detection signal by its outfan.
In this optional technical scheme, breakdown judge module is that the state transition of the logical signal transmitted by testing circuit judges whether catalyst there occurs fault, such as at catalyst when receiving the operational order of " opening " or " closed ", the logical signal of testing circuit transmission has jumped to " 1 " from " 0 ".Breakdown judge module can pass through the device realization that single-chip microcomputer, programmable logic controller (PLC) or other software and hardwares combine.
Under some embodiments, further, above-mentioned signal conversion module includes:
Photoelectrical coupler, its input is concatenated with described high voltage connector and high-tension battery by divider resistance, and the outfan of photoelectrical coupler exports described low-voltage signal as the outfan of described signal conversion module；
Low-tension supply, it is connected with the outfan of this photoelectrical coupler by resistance.
Preferably; in above-mentioned all equipment for protecting high-tension battery electricity system; the described switch that controls is NPN audion; the base stage of described NPN audion is connected with the outfan of described detection device; the colelctor electrode of described NPN audion is connected with described high voltage connector power supply, and the emitter stage of described NPN audion is connected with described high voltage connector.
Another purpose based on the technical program, present invention also offers a kind of method for protecting high-tension battery electricity system, and it includes step:
Receive the fault-signal characterizing positive pole high voltage connector fault and the fault-signal characterizing negative pole high voltage connector fault；
When receiving at least one of described fault-signal, send shutoff operational order；
According to turning off the power supply to high voltage connector of the operational order cutoff high catalyst power supply.
Of the present invention for protecting the method for high-tension battery electricity system by receiving fault-signal; when catalyst breaks down; operational order is turned off according to fault-signal output; power supply according to this shutoff operational order cutoff high catalyst; its contact cannot action in the case of its power supply is cut-off for high voltage connector; the supply line of high-tension battery is the most just not turned on, so that high-tension battery electricity system has obtained protecting timely and effectively.
Additionally; under some embodiments; of the present invention for protecting the method for high-tension battery electricity system can also include step: when receiving at least one of described fault-signal; export no-operation instruction from described outfan, control high-tension battery according to no-operation instruction and quit work.
Preferably, in the method for protecting high-tension battery electricity system of the present invention, described fault-signal is logic fault signal.
Further; in the above-mentioned method for protecting high-tension battery electricity system; described shutoff operational order sends according to characterizing the logical operation signal turning off operation, and described logical operation signal generates when receiving at least one of described logic fault signal and exports.
Additionally, present invention also offers a kind of vehicle, it has the above-mentioned equipment for protecting high-tension battery electricity system.
Of the present invention for protecting the equipment of high-tension battery electricity system when catalyst breaks down, in time high-tension battery electricity system can be taked corresponding protective measure.
Correspondingly, use the method for protecting high-tension battery electricity system of the present invention, when catalyst breaks down, in time high-tension battery electricity system can be implemented corresponding protection.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of high-tension battery electricity system.
Fig. 2 is the schematic diagram for protecting the equipment of high-tension battery electricity system under a kind of embodiment of the present invention.
Fig. 3 is the structured flowchart of the high voltage connector failure detector for protecting the equipment of high-tension battery electricity system under a kind of real mode of the present invention.
Fig. 4 is the schematic block diagram of the testing circuit for protecting the equipment of high-tension battery electricity system under a kind of real mode of the present invention.
Fig. 5 is the schematic block diagram for protecting the equipment of the high-tension battery electricity system testing circuit under another kind of real mode of the present invention.
Fig. 6 is the circuit diagram of the testing circuit for protecting the equipment of high-tension battery electricity system under a kind of real mode of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment to describing in detail further for the equipment and method protecting high-tension battery electricity system in the present embodiment of the present invention, but this detailed description is not construed as limiting the invention.
Fig. 2 shows the schematic diagram for protecting the equipment of high-tension battery electricity system under a kind of embodiment of the present invention.As shown in Figure 2; the present embodiment for protecting the equipment of high-tension battery electricity system to include: detection device; this detection device includes a logic sum gate; it has a logical signal outfan and two logic signal input end; including the first logic signal input end and the second logic signal input end; this detection device also includes the controller of Vehicular battery management system, and its input is connected with the logical signal outfan of logic sum gate；Catalyst controls switch, it is NPN audion that this catalyst controls switch, the base stage of this NPN audion is connected with the outfan of the controller of Vehicular battery management system, colelctor electrode is connected with high voltage connector power supply+12V, emitter stage is connected with the feeder ear positive pole of high voltage connector, the feeder ear minus earth of high voltage connector.
Corresponding foregoing circuit structure, of the present invention comprises the steps: for protecting the method for high-tension battery electricity system to be applied to the present embodiment
Two logic signal input end of logic sum gate receive sign positive pole high voltage connector S1 and the logic fault signal of negative pole high voltage connector S2 fault respectively；
Logic sum gate is when receiving at least one that sign positive pole high voltage connector S1 has out of order logic fault signal and the sign negative pole high voltage connector S2 out of order logic fault signal of tool, sent by its outfan and characterize the logical operation signal turning off operation, the most as shown in table 1；
The controller of Vehicular battery management system sends shutoff operational order according to characterizing the logical operation signal turning off operation, this shutoff operational order ends by controlling the base voltage control NPN audion of the NPN audion as catalyst control switch, thus the power supply that cutoff high catalyst power supply+12V is to high voltage connector.
Table 1
In some embodiments; controller also sends no-operation instruction while sending shutoff operational order; this no-operation instruction controls high-tension battery and quits work, thus together with turning off operational order, high-tension battery electricity system is implemented duplicate protection, strengthens the reliability of protection.
In addition, the controller of Vehicular battery management system also can directly receive sign positive pole high voltage connector S1 and the fault-signal of negative pole high voltage connector S2 fault as control module, and when receiving at least one that sign positive pole high voltage connector S1 has out of order fault-signal and the sign negative pole high voltage connector S2 out of order fault-signal of tool, send and turn off operational order (or being simultaneously emitted by turning off operational order and no-operation instruction).Certainly, in other embodiment, the controller of above-mentioned Vehicular battery management system can also be substituted by the peripheral control unit independent of Vehicular battery management system.
In some embodiments, the fault of positive pole high voltage connector S1 and negative pole high voltage connector S2 can be detected by Vehicular battery management system, i.e. Vehicular battery management system sends the fault-signal characterizing positive pole high voltage connector S1 fault and the fault-signal characterizing negative pole high voltage connector S2 fault.
In other embodiment, the fault of positive pole high voltage connector S1 and negative pole high voltage connector S2 can be detected respectively by two the high voltage connector failure detectors additionally arranged.
Such as, Fig. 3 shows the high voltage connector failure detector structured flowchart under a kind of embodiment.As shown in Figure 3, in this embodiment, detected high-tension battery contactor circuit has two catalysts, the positive contact device S1 being i.e. connected with high-tension battery B positive pole and the cathode contact device S2, high-tension battery B that are connected with high-tension battery negative pole are by positive contact device S1 and cathode contact device S2 and load RLTwo ends be connected.Additionally, testing circuit also includes the first testing circuit and the second testing circuit, it is connected with positive contact device S1 and cathode contact device S2 respectively: corresponding, breakdown judge module also includes Fisrt fault judge module and the second breakdown judge module, its connection corresponding with the first testing circuit and the second testing circuit respectively.Wherein, after the electric current formed high-voltage signal flowing through positive contact device S1 is converted to detect signal accordingly by the first testing circuit, export from the outfan of the first testing circuit；Fisrt fault judge module according to positive contact device S1 when receiving the operational order of " opening " or " closed ", whether the detection signal of the first testing circuit output there occurs state transition, so that whether positive pole catalyst S1 there occurs, fault judges and sends the fault-signal of sign positive pole high voltage connector S1 fault, this fault-signal can be logical signal.After the electric current formed high-voltage signal flowing through cathode contact device S2 is converted to detect signal accordingly by the second testing circuit, export from the outfan of the second testing circuit；Second breakdown judge module according to cathode contact device S2 when receiving the operational order of " opening " or " closed ", whether the detection signal of the second testing circuit output there occurs state transition, whether there occurs that fault carries out judging and sending the fault-signal of sign negative pole high voltage connector S2 fault with anticathode catalyst S2, this fault-signal can be logical signal.
Fig. 4 illustrates the structure of block diagram of the testing circuit of the high voltage connector failure detector under a kind of embodiment.In this embodiment, testing circuit includes: signal conversion module, its input receives high-voltage signal, after high-voltage signal is converted to low-voltage signal by signal conversion module, is exported to breakdown judge module as the detection signal in the technical program by low-voltage signal by its outfan.
Fig. 5 illustrates the structure of block diagram of the testing circuit of the high voltage connector failure detector under another embodiment.In this embodiment, state testing circuit to include: signal conversion module, its input receives high-voltage signal, signal conversion module exports after the high-voltage signal from catalyst is converted to low-voltage signal to connected logic module output, the low-voltage signal that signal conversion module exports is converted to corresponding logical signal by logic module output, then exports this logical signal to breakdown judge module.
This breakdown judge module illustrated in Figure 4 is carried out to the embodiment of catalyst breakdown judge according to the low-voltage signal that signal conversion module is transmitted, below the scheme concrete by is described in further detail.It should be noted that those skilled in the art can also be realized by its alternate manner known.
Fig. 6 shows the circuit diagram of the testing circuit in the high voltage connector failure detector under a kind of embodiment.As shown in Figure 6, in the present embodiment, testing circuit includes the first testing circuit for detecting positive contact device S1 and for detecting second testing circuit of cathode contact device S2.First testing 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 by divider resistance R1 with first protection module one end connect, and with positive contact device S1 and load RLOne end connect；The negative input of the first photoelectrical coupler T1 is connected by the other end of divider resistance R3 and first protection module, and is connected to the negative pole of high-tension battery B；The colelctor electrode of the phototriode of the first photoelectrical coupler T1 exports the low-voltage signal Signal0 as detection signal as the first outfan, first outfan of the first photoelectrical coupler T1 connects the positive pole+5V of low-tension supply also by resistance R5, and the emitter stage of the first photoelectrical coupler T1 is as the second output head grounding.Please continue to refer to Fig. 6, the second testing circuit includes: the second photoelectrical coupler T2, divider resistance R2, divider resistance R4 and resistance R6；Wherein, the electrode input end of the second photoelectrical coupler T2 is connected by one end of divider resistance R2 and second protection module; and it is connected to the positive pole of high-tension battery B; the negative input of the second photoelectrical coupler T2 by divider resistance R4 with second protection module the other end connect, and with cathode contact device S2 and load RLThe other end connect；The colelctor electrode of the phototriode of the second photoelectrical coupler T2 exports the low-voltage signal Signal1 as detection signal as the first outfan, first outfan of the second photoelectrical coupler T2 connects the positive pole+5V of low-tension supply by resistance R6, and the emitter stage of the second photoelectrical coupler T2 is as the second output head grounding.
The high voltage connector fault detection method of above-mentioned testing circuit includes:
The electric current formed high-voltage signal flowing through positive contact device S1 is converted to corresponding low-voltage signal by the first signal conversion module, and is exported as detection signal Signal0 by its outfan by low-voltage signal；Receive positive contact device S1 " to open " or the operational order of " closed "；Whether Fisrt fault judge module occurs state transition to judge whether positive contact device S1 breaks down according to the detection signal Signal0 that positive contact device S1 exports when receiving the operational order of " opening " or " closed ": if detection signal Signal0 there occurs state transition, then judge that positive contact device S1 does not breaks down；If detection signal Signal0 does not occurs state transition, then judge that positive contact device S1 there occurs fault, and the type of further failure judgement；Concrete as shown in table 2.
Equally, the electric current formed high-voltage signal flowing through cathode contact device S2 is converted to corresponding low-voltage signal by secondary signal modular converter, and is exported as detection signal Signal1 by its outfan by low-voltage signal；Receive cathode contact device S2 " to open " or the operational order of " closed "；Whether the second breakdown judge module occurs state transition to judge whether cathode contact device S2 breaks down according to the detection signal Signal1 that cathode contact device S2 exports when receiving the operational order of " opening " or " closed ": if detection signal Signal1 there occurs state transition, then judge that cathode contact device S2 does not breaks down；If detection signal Signal1 does not occurs state transition, then judge that cathode contact device S2 there occurs fault, and the type of further failure judgement；Concrete as shown in table 3.
Table 2
Table 3
In such scheme, the first protection module and the second protection module are for protecting the testing circuit of correspondence, and it is by overvoltage protection and/or filters protection to protect testing circuit.
Failure detection result in above-mentioned table 2 and table 3 by breakdown judge module according to above-mentioned high voltage connector fault detection method gained, breakdown judge module is according to the failure detection result in above-mentioned table 2 and table 3, output is corresponding characterizes positive pole high voltage connector S1 and the fault-signal of negative pole high voltage connector S2 fault, and this fault-signal can be logic fault signal.Such as, when in table 3, failure detection result is solder failure and open fault, then breakdown judge module output logic signal 1, characterize negative pole high voltage connector S2 faulty.The most such as, in table 3 during failure detection result fault-free, then breakdown judge module output logic signal 0, characterize negative pole high voltage connector S2 fault-free.
It should be noted that the listed above specific embodiment being only the present invention, it is clear that the invention is not restricted to above example, have the similar change of many therewith.If all deformation that those skilled in the art directly derives from present disclosure or associates, protection scope of the present invention all should be belonged to.
Claims (20)
1. the equipment being used for protecting high-tension battery electricity system, it is characterised in that including:
Detection device, it has outfan and at least two in order to receive high voltage connector fault-signal
Signal input part, wherein, described at least two signal input part is respectively used to receive the positive extra-high voltage of sign
The fault-signal of catalyst fault and the fault-signal of sign negative pole high voltage connector fault, described detection
Device is arranged to: at least one of described at least two signal input part receive described therefore
During barrier signal, turn off operational order from the output of described outfan；
Catalyst controls switch, and it is connected to described high voltage connector and described high voltage connector is powered electricity
Between source, the described switch also outfan with described detection device that controls is connected, with described in receive
Turn off operational order rear cutout to break the power supply to high voltage connector of the high voltage connector power supply.
2. as claimed in claim 1 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
State detection device to be also connected, at described at least two signal input part with Vehicular battery management system
When at least one receives described fault-signal, export no-operation instruction from described outfan,
This no-operation instruction is used for controlling high-tension battery and quits work.
3. as claimed in claim 1 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
State detection device to include:
Control module, it has the outfan as described detection device outfan and as detection device
The input of at least two signal input part, described control module is at its at least two input extremely
When one of them receives described fault-signal less, turn off operational order from the output of its outfan.
4. as claimed in claim 1 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
Stating fault-signal is logic fault signal.
5. as claimed in claim 4 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
State detection device to include:
Logic sum gate, it has logical signal outfan and as described at least two signal input part
At least two logic signal input end, described logic sum gate is in its at least two logic signal input end
When at least one receives described logic fault signal, characterize from the output of its logical signal outfan
Turn off the logical operation signal of operation；
Controller, its input is connected with the logical signal outfan of described logic sum gate, described control
The outfan of device is receiving described logic behaviour as the outfan of described detection device, described controller
Described shutoff operational order is exported after making signal.
6. as claimed in claim 5 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
Stating controller uses Vehicular battery management system to realize.
7. as claimed in claim 5 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
Stating controller is the peripheral control unit independent of Vehicular battery management system.
8. as claimed in claim 1 for protecting the equipment of high-tension battery electricity system, it is characterised in that car
Battery management system detection positive pole high voltage connector and the fault of negative pole high voltage connector, and send table
Levy the described fault-signal of positive pole high voltage connector fault and characterize the institute of negative pole high voltage connector fault
State fault-signal.
9. as claimed in claim 1 for protecting the equipment of high-tension battery electricity system, it is characterised in that also
At least including two high voltage connector failure detectors, it inputs with described at least two signal respectively
End correspondence connects, and said two high voltage connector failure detector detects positive pole high voltage connector respectively
With the fault of negative pole high voltage connector the described event of the positive pole high voltage connector fault of transmission sign respectively
Barrier signal and the described fault-signal of sign negative pole high voltage connector fault.
10. as claimed in claim 9 for protecting the equipment of high-tension battery electricity system, it is characterised in that institute
State high voltage connector failure detector to include:
Testing circuit, it has input and outfan, the input of described testing circuit and high-voltage connecting
Tentaculum connects, and the electric current formed high-voltage signal flowing through described high voltage connector is turned by described testing circuit
After being changed to detect signal accordingly, export from the outfan of testing circuit；
Breakdown judge module, it is connected with the outfan of described testing circuit, described breakdown judge module
According to described high voltage connector when receiving the operational order of " opening " or " closed ", detection is described
Whether the detection signal of testing circuit output there occurs state transition, high voltage connector whether to occur
Fault judges, and sends the described fault-signal characterizing high voltage connector fault.
11. as claimed in claim 10 for protecting the equipment of high-tension battery electricity system, it is characterised in that
Described testing circuit includes: signal conversion module, and its input is connected with high voltage connector, its output
End is connected with breakdown judge module, and described high-voltage signal is converted to low pressure letter by described signal conversion module
After number, low-voltage signal is exported to described breakdown judge mould as described detection signal by its outfan
Block.
12. as claimed in claim 10 for protecting the equipment of high-tension battery electricity system, it is characterised in that
Described testing circuit includes:
Signal conversion module, its input is connected with high voltage connector, and described signal conversion module is by institute
State after high-voltage signal is converted to low-voltage signal and export；
Logic module output, its input is connected with the outfan of signal conversion module, logic output mould
The outfan of block is connected with described breakdown judge module, and described logic module output will be changed from signal
After the low-voltage signal of module is converted to logical signal, logical signal is passed through it as described detection signal
Outfan exports to described breakdown judge module.
13. as claimed in claim 12 for protecting the equipment of high-tension battery electricity system, it is characterised in that
Described signal conversion module includes:
Photoelectrical coupler, its input is by divider resistance and described high voltage connector and high-tension battery string
Connecing, the outfan of photoelectrical coupler exports described low pressure letter as the outfan of described signal conversion module
Number；
Low-tension supply, it is connected with the outfan of this photoelectrical coupler by resistance.
14. equipment for protecting high-tension battery electricity system as described in any one in claim 1-13,
It is characterized in that, the described switch that controls is NPN audion, the base stage of described NPN audion and institute
The outfan stating detection device connects, the colelctor electrode of described NPN audion and described high voltage connector
Power supply connects, and the emitter stage of described NPN audion is connected with described high voltage connector.
15. 1 kinds for the methods of protecting high-tension battery electricity system, it is characterised in that include step:
Receive and characterize the fault-signal of positive pole high voltage connector fault and characterize the event of negative pole high voltage connector
The fault-signal of barrier；
When receiving at least one of described fault-signal, send shutoff operational order；
According to turning off the power supply to high voltage connector of the operational order cutoff high catalyst power supply.
16. as claimed in claim 15 for the method protecting high-tension battery electricity system, it is characterised in that
Further comprise the steps of: when receiving at least one of described fault-signal, defeated from described outfan
Go out no-operation instruction, control high-tension battery according to no-operation instruction and quit work.
17. as claimed in claim 15 for the method protecting high-tension battery electricity system, it is characterised in that
Described fault-signal is logic fault signal.
18. as claimed in claim 17 for the method protecting high-tension battery electricity system, it is characterised in that
Described shutoff operational order sends according to characterizing the logical operation signal turning off operation, described logical operation
Signal is receiving the sign positive pole high voltage connector out of order logic fault signal of tool and is characterizing negative pole
High voltage connector generates and exports when having at least one of out of order logic fault signal.
19. 1 kinds of vehicles, its have as described in any one in claim 1-13 for protecting high-tension battery
The equipment of electricity system.
20. 1 kinds of vehicles, it has as claimed in claim 14 for protecting setting of high-tension battery electricity system
Standby.
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| CN106300229B (en) | 2019-04-12 |
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