CN107703447A - Condition checkout gear and dynamical system - Google Patents
Condition checkout gear and dynamical system Download PDFInfo
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- CN107703447A CN107703447A CN201710992175.9A CN201710992175A CN107703447A CN 107703447 A CN107703447 A CN 107703447A CN 201710992175 A CN201710992175 A CN 201710992175A CN 107703447 A CN107703447 A CN 107703447A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
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Abstract
Condition checkout gear provided by the invention and dynamical system, it is related to contact state detection technique field.Wherein, condition checkout gear includes：Input is connected with the voltage detecting circuit of voltage of the detection contact away from battery pack one end with the one end of contact away from battery pack；One end that input and coil are connected with processor is connected the control signal exported with measurement processor to the control signal of coil and detects circuit；The connection of the output end of first input end and voltage detecting circuit, the second input are connected the status determination circuit for the working condition that contact is judged with the control signal of the voltage according to the contact detected and processor output with the output end of control signal detection circuit.By above-mentioned setting, can solve the problems, such as high and because judging the working condition of high-voltage relay according to the voltage of auxiliary contact and when auxiliary contact damages in the presence of judging the problem of inaccurate because cost using the high-voltage relay with auxiliary contact be present in the prior art.
Description
Technical field
The present invention relates to contact state detection technique field, in particular to a kind of condition checkout gear and dynamical system
System.
Background technology
With the getting worse of the exhaustion of traditional fossil energy, and problem of environmental pollution, the development and utilization of new energy
Extensive concern is obtained.Wherein, an automobile part indispensable as daily life, in the consumption of traditional fossil energy
In occupation of consequence.Therefore, new-energy automobile is applied interior in a big way.
New-energy automobile mainly includes pure electric automobile and hybrid vehicle at present, and its dynamical system is equipped with high electricity
The battery pack of pressure with to the external drive circuit of automobile provide electric energy.Wherein, electric energy is exported to external drive circuit in the battery
During need set high-voltage relay, with realize to electric energy output control.During the contact action of relay due to
Overtension, air can be made to produce electric arc because of ionization, and then damage high-voltage relay.To avoid the high-voltage relay of service failure
Device and the problem of cause dynamical system reliably and securely can not externally export electric energy, the working condition of high-voltage relay can be entered
Row is detected to prompt staff to be changed in time.
Study and find through inventor, in the prior art, because being existed into using the high-voltage relay with auxiliary contact
The problem of this is high and deposited because judging the working condition of high-voltage relay according to the voltage of auxiliary contact when auxiliary contact damages
Judging the problem of inaccurate.
The content of the invention
In view of this, it is an object of the invention to provide a kind of condition checkout gear and dynamical system, to solve existing skill
Because the problem of cost is high be present and because the voltage according to auxiliary contact is sentenced using the high-voltage relay with auxiliary contact in art
The working condition of broken height potential relay and when auxiliary contact damages exist judge the problem of inaccurate.
To achieve the above object, the embodiment of the present invention adopts the following technical scheme that：
A kind of condition checkout gear, the dynamical system applied to new-energy automobile.The dynamical system includes battery pack, height
Potential relay and processor, the high-voltage relay include the contact that is connected with the positive pole of the battery pack and with the processor
Output end connection coil, the condition checkout gear includes：
Voltage detecting circuit, the input of the voltage detecting circuit connect with the one end of the contact away from the battery pack
Connect, to detect voltage of the contact away from described battery pack one end；
Control signal detects circuit, and the input of the control signal detection circuit is connected with processor with the coil
One end connects, and is exported with detecting the processor to the control signal of the coil；
Status determination circuit, the output end of the first input end of the status determination circuit and the voltage detecting circuit connect
Connect, the second input is connected with the output end of control signal detection circuit, the voltage of the contact detected with basis and place
The control signal of reason device output judges the working condition of the contact；
Power supply circuit, the output end of the power supply circuit and the voltage detecting circuit, control signal detection circuit and shape
State decision circuitry connects respectively, to detect circuit and status determination circuit offer electricity to the voltage detecting circuit, control signal
Energy.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the voltage detecting circuit includes
Photoelectrical coupler, first resistor, second resistance and 3rd resistor；
The first input end of the photoelectrical coupler is by the first resistor and the contact away from the battery pack
One end connection, the second input is connected with the negative pole of the battery pack, the first output end passes through the second resistance and the confession
The output end of circuit is connected and is connected by the 3rd resistor with the first input end of the status determination circuit, second defeated
Go out end ground connection；
When the contact disconnects, the one end of the contact away from the battery pack is low level, the photoelectrical coupler
Disconnect so that the status determination circuit obtains high level letter by the second resistance and 3rd resistor to the power supply circuit
Number；
In the contact closure, the one end of the contact away from the battery pack is high level, the photoelectrical coupler
Close so that the status determination circuit is grounded to obtain low level signal by the photoelectrical coupler and 3rd resistor.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the voltage detecting circuit also wraps
Include the first diode；
First Diode series are between the first resistor and the contact, and the anode of first diode
It is connected with the contact, negative electrode is connected with the first resistor.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the control signal detects circuit
Including triode, the 4th resistance, the 5th resistance and the 6th resistance；
The base stage of the triode is connected by the 4th resistance with one end that the coil is connected with processor, current collection
Pole is connected with the output end of the power supply circuit by the 5th resistance and by the 6th resistance and the condition adjudgement
The connection of the second input, the grounded emitter of circuit；
When the processor is not to the coil output control signal, the base stage of the triode is low level, so that
The colelctor electrode of the triode is separated with emitter stage, and the status determination circuit passes through the 5th resistance and the 6th resistance
High level signal is obtained to the power supply circuit；
When the processor is to the coil output control signal, the base stage of the triode is high level, so that institute
State and turned between the colelctor electrode of triode and emitter stage, the status determination circuit passes through the triode and the 6th resistance eutral grounding
To obtain low level signal.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the control signal detects circuit
Also include the second diode；
Second Diode series are connected between the coil and the 4th resistance, and second diode
Anode is connected with the coil, negative electrode is connected with the 4th resistance.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the status determination circuit is different
Or gate logic circuit；
The first input end of the XOR gate logic is connected with the output end of the voltage detecting circuit, the second input
End is connected with the output end of control signal detection circuit, power end is connected with the power supply circuit, earth terminal is grounded；
The first input end of the XOR gate logic be high level signal, the second input be high level signal
When, the output low level signal of the XOR gate logic；
The first input end of the XOR gate logic be high level signal, the second input be low level signal
When, the output high level signal of the XOR gate logic；
The first input end of the XOR gate logic be low level signal, the second input be high level signal
When, the output high level signal of the XOR gate logic；
The first input end of the XOR gate logic be low level signal, the second input be low level signal
When, the output low level signal of the XOR gate logic.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the power supply circuit includes power supply
Power supply and voltage conversion circuit；
The input of the voltage conversion circuit is connected with the positive pole of the power supply, output end and the voltage detecting
Circuit, control signal detection circuit, status determination circuit are connected respectively, and the electric energy of the power supply is carried out into decompression processing
After export to the voltage detecting circuit, control signal detection circuit, status determination circuit.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the condition checkout gear also wraps
Include status display circuit；
The input of the status display circuit is connected with the output end of the status determination circuit, with according to the state
The control of decision circuitry shows the working condition of the contact.
In the embodiment of the present invention preferably selects, in above-mentioned condition checkout gear, the status display circuit includes
7th resistance and light emitting diode；
The anode of the light emitting diode is connected with the output end of the status determination circuit by the 7th resistance, is cloudy
Pole is grounded.
On the basis of the above, the embodiment of the present invention additionally provides a kind of dynamical system, applied to new-energy automobile.It is described dynamic
Force system includes battery pack, high-voltage relay, processor and above-mentioned condition checkout gear；
The output end of the processor is connected with the high-voltage relay, to control the electricity by the high-voltage relay
Pond group is powered to external circuit, and the condition checkout gear is connected with the high-voltage relay, to detect the high-voltage relay
Working condition.
Condition checkout gear provided by the invention and dynamical system, by voltage detecting circuit, control signal detect circuit,
Status determination circuit and power supply circuit are equipped with, and can be solved in the prior art because using the high pressure with auxiliary contact
Relay and the problem of cost is high be present and because judging the working condition of high-voltage relay according to the voltage of auxiliary contact and auxiliary
Exist when helping the contact to damage and judge the problem of inaccurate, drastically increase the practicality of condition checkout gear and dynamical system with
Reliability.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Fig. 1 is the application block diagram of condition checkout gear provided in an embodiment of the present invention.
Fig. 2 is the circuit theory diagrams of condition checkout gear provided in an embodiment of the present invention.
Fig. 3 is the circuit theory diagrams of voltage detecting circuit provided in an embodiment of the present invention.
Fig. 4 is the circuit theory diagrams that control signal provided in an embodiment of the present invention detects circuit.
Icon：100- condition checkout gears；110- voltage detecting circuits；130- control signals detect circuit；150- states
Decision circuitry；170- power supply circuits；171- power supplies；173- voltage conversion circuits；190- status display circuits；200- batteries
Group；300- high-voltage relays；400- processors；U- photoelectrical couplers；R1- first resistors；R2- second resistances；The electricity of R3- the 3rd
Resistance；The resistance of R4- the 4th；The resistance of R5- the 5th；The resistance of R6- the 6th；The resistance of R7- the 7th；The diodes of D1- first；The poles of D2- the two or two
Pipe；D3- light emitting diodes；Q- triodes.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment only
It is the part of the embodiment of the present invention, rather than whole embodiments.The present invention being generally described and illustrated herein in the accompanying drawings
The component of embodiment can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.In description of the invention
In, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing description, and it is not intended that being or implying relative
Importance.
In the description of the invention, unless otherwise clearly defined and limited, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body implication.
As depicted in figs. 1 and 2, the embodiments of the invention provide a kind of condition checkout gear 100, applied to new-energy automobile
Dynamical system.The dynamical system includes battery pack 200, high-voltage relay 300 and processor 400, the high-voltage relay
300 include the contact being connected with the positive pole of the battery pack 200 and the coil being connected with the output end of the processor 400, institute
State condition checkout gear 100 include voltage detecting circuit 110, control signal detection circuit 130, status determination circuit 150 and
Power supply circuit 170.
Further, in the present embodiment, the input of the voltage detecting circuit 110 and the contact are away from the electricity
One end connection of pond group 200, to detect voltage of the contact away from described one end of battery pack 200.The control signal detection
One end that the input of circuit 130 is connected with processor 400 with the coil is connected, with detect the processor 400 export to
The control signal of the coil.The output of the first input end of the status determination circuit 150 and the voltage detecting circuit 110
End connection, the second input are connected with the output end of control signal detection circuit 130, with the electricity according to the contact detected
The control signal that pressure and processor 400 export judges the working condition of the contact.The output end of the power supply circuit 170 and institute
State voltage detecting circuit 110, control signal detection circuit 130 and status determination circuit 150 to connect respectively, to examine to the voltage
Slowdown monitoring circuit 110, control signal detection circuit 130 and status determination circuit 150 provide electric energy.
Alternatively, the electrical equipment that the voltage detecting circuit 110 includes is unrestricted, can carry out according to the actual requirements
Set, for example, can be configured according to the precision precision of specific detection mode, detection.In the present embodiment, with reference to Fig. 3,
The voltage detecting circuit 110 can include photoelectrical coupler U, first resistor R1, second resistance R2 and 3rd resistor R3.It is logical
Cross and use photoelectrical coupler U, it is possible to prevente effectively from the high voltage of the battery pack 200 passes through the voltage during contact closure
Detection circuit 110 puts on the status determination circuit 150, and then avoids the status determination circuit 150 from being damaged because of high voltage
Bad the problem of.
Further, in the present embodiment, the first input end of the photoelectrical coupler U by the first resistor R1 with
The contact away from the battery pack 200 one end connection, the second input be connected with the negative pole of the battery pack 200, first
Output end is connected with the output end of the power supply circuit 170 by the second resistance R2 and by the 3rd resistor R3 and institute
State first input end connection, the second output head grounding of status determination circuit 150.
Pass through above-mentioned setting, it is possible to achieve：When the contact disconnects, the contact away from the battery pack 200 one
Hold and disconnected for low level, the photoelectrical coupler U so that the status determination circuit 150 passes through the second resistance R2 and the 3rd
Resistance R3 obtains high level signal to the power supply circuit 170.In the contact closure, the contact is away from the battery pack
200 one end is high level, and the photoelectrical coupler U closures are so that the status determination circuit 150 passes through the photoelectric coupling
Device U and 3rd resistor R3 is grounded to obtain low level signal.
Further, to avoid the electric current acting in opposition in photoelectrical coupler U in the contact, in turn result in it is described dynamic
The irregular working of the external circuit of Force system connection, in the present embodiment, the voltage detecting circuit 110 can also include the
One diode D1.The first diode D1 is series between the first resistor R1 and the contact, and the one or two pole
Pipe D1 anode is connected with the contact, negative electrode is connected with the first resistor R1.
Alternatively, the photoelectrical coupler U and the first diode D1 concrete model are unrestricted, can be according to reality
Border demand is configured, for example, can be configured according to resistance to pressure, coupling.In the present embodiment, the photoelectrical coupler
U model 4N25, the model 1N4001 of the first diode D1.
Alternatively, the first resistor R1, second resistance R2 and 3rd resistor R3 resistance are unrestricted, can basis
In the circuit, the maximum current and maximum voltage allowed is configured.In the present embodiment, the resistance of the first resistor R1
It is worth for 47K Ω, the resistance of the second resistance R2 is that 4.7K Ω, the 3rd resistor R3 resistance are 2K Ω.
Alternatively, the electrical equipment that the control signal detection circuit 130 includes is unrestricted, can be according to the actual requirements
It is configured, for example, can be configured according to the precision precision of specific detection mode, detection.In the present embodiment, with reference to
Fig. 4, the control signal detection circuit 130 can include triode Q3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance
R6。
Further, in the present embodiment, the base stage of the triode Q3 passes through the 4th resistance R4 and the coil
It is connected with one end connection of processor 400, colelctor electrode is connected by the output end of the 5th resistance R5 and the power supply circuit 170
Connect and be connected by the 6th resistance R6 with the second input of the status determination circuit 150, grounded emitter.
Pass through above-mentioned setting, it is possible to achieve：It is described when the processor 400 is not to the coil output control signal
Triode Q3 base stage is low level, so that separated, the condition adjudgement of the colelctor electrode of the triode Q3 and emitter stage
Circuit 150 obtains high level signal by the 5th resistance R5 and the 6th resistance R6 to the power supply circuit 170.At the place
When managing device 400 to the coil output control signal, the base stage of the triode Q3 is high level, so that the triode Q3
Turned between colelctor electrode and emitter stage, the status determination circuit 150 by the triode Q3 and the 6th resistance R6 ground connection with
Obtain low level signal.
Further, to avoid the electric current acting in opposition in the triode Q3 in the coil, in turn result in it is described
The problem of contact malfunctions, in the present embodiment, the control signal detection circuit 130 can also include the second diode D2.
The second diode D2 is connected in series between the coil and the 4th resistance R4, and the sun of the second diode D2
Pole is connected with the coil, negative electrode is connected with the 4th resistance R4.
Alternatively, the triode Q3 and the second diode D2 concrete model are unrestricted, can be according to reality
Demand is configured, for example, can be configured according to resistance to pressure.In the present embodiment, the model of the triode Q3
S8050, the model 1N4001 of the second diode D2.
Alternatively, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6 resistance are unrestricted, can basis
In the circuit, the maximum current and maximum voltage allowed is configured.In the present embodiment, the resistance of the 4th resistance R4
It is worth for 4.7K Ω, the resistance of the second resistance R2 is that 4.7K Ω, the 3rd resistor R3 resistance are 2K Ω.
Alternatively, the particular type of the status determination circuit 150 is unrestricted, can be set according to the actual requirements
Put, receive, handle as long as there is signal, the ability of output.In the present embodiment, the status determination circuit 150 is different
Or gate logic circuit.
Further, in the present embodiment, the first input end of the XOR gate logic and voltage detecting electricity
The output end that the output end connection on road 110, the second input and the control signal detect circuit 130 is connected, power end and institute
State power supply circuit 170 connect, earth terminal ground connection.
Pass through above-mentioned setting, it is possible to achieve：The first input end of the XOR gate logic be high level signal, the
When two inputs are high level signal, i.e., are disconnected in the contact and the processor 400 is not believed to the coil output control
Number when, the output low level signal of the XOR gate logic.It is height in the first input end of the XOR gate logic
When level signal, the second input are low level signal, i.e., are disconnected in the contact and the processor 400 is defeated to the coil
When going out control signal, the output high level signal of the XOR gate logic.First in the XOR gate logic is defeated
Enter that end is low level signal, the second input is when being high level signal, i.e., the contact closure and the processor 400 not to
During the coil output control signal, the output high level signal of the XOR gate logic.In XOR gate logic electricity
When the first input end on road is low level signal, the second input is low level signal, i.e., at the contact closure and the place
When managing device 400 to the coil output control signal, the output low level signal of the XOR gate logic.
Alternatively, the concrete model of the XOR gate logic is unrestricted, can be configured according to the actual requirements.
In the present embodiment, the model SN54LS86A of the XOR gate logic.
Further, the knot that the status determination circuit 150 judges to draw is obtained in time, advantageously for ease of staff
Fruit, in the present embodiment, the condition checkout gear 100 can also include status display circuit 190.The status display circuit
190 input is connected with the output end of the status determination circuit 150, with the control according to the status determination circuit 150
Show the working condition of the contact.
Alternatively, the electrical equipment that the status display circuit 190 includes is unrestricted, can carry out according to the actual requirements
Set, for example, can be configured according to specific display requirement.In view of as long as the high-voltage relay 300 can be shown
Failure be present to prompt user to be changed in time, without being particularly shown out the fault type of the high-voltage relay 300,
Therefore, in the present embodiment, the status display circuit 190 can include the 7th resistance R7 and light emitting diode D3, the hair
Optical diode D3 anode is connected by the 7th resistance R7 with the output end of the status determination circuit 150, minus earth.
Pass through above-mentioned setting, it is possible to achieve：Disconnected in the contact and the processor 400 is not exported to the coil and controlled
During signal processed or when the contact closure and the processor 400 are to the coil output control signal, the condition adjudgement
Circuit 150 exports low level signal, and the light emitting diode D3 does not light, to indicate that the high-voltage relay 300 is normal.Institute
State contact disconnection and the processor 400 is to during the coil output control signal or in the contact closure and the processor
400 not to the coil output control signal when, the status determination circuit 150 exports high level signal, the light-emitting diodes
Pipe D3 is illuminated to indicate the high-voltage relay 300 and failure be present.
Alternatively, the specific resistance of the 7th resistance R7 is unrestricted, can be configured according to the actual requirements, example
Such as, the amplitude of high level signal and minimum, the maximum of the light emitting diode D3 exported according to the status determination circuit 150
Driving current is configured.In the present embodiment, the resistance of the 7th resistance R7 is 2K Ω.
Alternatively, the electrical equipment that the power supply circuit 170 includes is unrestricted, can be set according to the actual requirements
Put, for example, can be configured according to the magnitude of voltage and stability of the power supply circuit 170 output electric energy.In the present embodiment
In, the power supply circuit 170 can include power supply 171 and voltage conversion circuit 173.
Further, in the present embodiment, the input of the voltage conversion circuit 173 and the power supply 171
Positive pole connection, output end and the voltage detecting circuit 110, control signal detection circuit 130, status determination circuit 150 are distinguished
Connection, exported after the electric energy of the power supply 171 is carried out into decompression processing to the voltage detecting circuit 110, control letter
Number detection circuit 130, status determination circuit 150.
Alternatively, the power supply 171 both can be the vehicle power of the new-energy automobile or individually set
The battery put.In the present embodiment, the power supply 171 is the 12V vehicle powers of the new-energy automobile.
Alternatively, the concrete model of the voltage conversion circuit 173 is unrestricted, as long as there is the energy for carrying out voltage conversion
Power.In the present embodiment, the model LM7805 of the voltage conversion circuit 173, its output voltage are 5V, and with compared with
Good pressure stabilization function.
The embodiment of the present invention also provides a kind of dynamical system, and applied to new-energy automobile, the dynamical system includes battery
Group 200, high-voltage relay 300, processor 400 and above-mentioned condition checkout gear 100.
Further, in the present embodiment, the output end of the processor 400 is connected with the high-voltage relay 300, with
The battery pack 200 is controlled to be powered to external circuit by the high-voltage relay 300, the condition checkout gear 100 and institute
State high-voltage relay 300 to connect, to detect the working condition of the high-voltage relay 300.
Alternatively, the quantity for the cell that the battery pack 200 includes is unrestricted, can be according to need in practical application
The maximum voltage and the voltage of single cell to be exported are configured.In the present embodiment, according to the outer of new-energy automobile
The primary demand voltage of portion's drive circuit, the output voltage of the battery pack 200 can be 300-400V.
Alternatively, the particular type of the processor 400 is unrestricted, and the fan-out capability as long as there is control signal is
Can.In the present embodiment, the processor 400 is preferably digital signal processor.
Include the condition checkout gear 100 in view of the dynamical system, there is the dynamical system state to examine
The all technical characteristic of device 100 is surveyed, and can solve identical technical problem, identical technique effect is produced, therefore, in this reality
Apply in example, all technical characteristic of the dynamical system no longer repeats one by one, incorporated by reference to above to the condition checkout gear 100
Explanation.
In summary, a kind of condition checkout gear 100 provided by the invention and dynamical system, pass through voltage detecting circuit
110th, control signal detects being equipped with for circuit 130, status determination circuit 150 and power supply circuit 170, can solve existing
Because the problem of cost is high be present and because of the electricity according to auxiliary contact using the high-voltage relay 300 with auxiliary contact in technology
Pressure judges the working condition of high-voltage relay 300 and exists when auxiliary contact damages and judge the problem of inaccurate, greatly to carry
The high practicality and reliability of condition checkout gear 100 and dynamical system.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of condition checkout gear, the dynamical system applied to new-energy automobile, it is characterised in that the dynamical system includes
Battery pack, high-voltage relay and processor, the high-voltage relay include the contact that is connected with the positive pole of the battery pack and with
The coil of the output end connection of the processor, the condition checkout gear include：
Voltage detecting circuit, the input of the voltage detecting circuit are connected with the one end of the contact away from the battery pack,
To detect voltage of the contact away from described battery pack one end；
Control signal detects circuit, and the input of the control signal detection circuit is connected with one end of processor with the coil
Connection, is exported to the control signal of the coil with detecting the processor；
Status determination circuit, the first input end of the status determination circuit is connected with the output end of the voltage detecting circuit,
Second input is connected with the output end of control signal detection circuit, with the voltage and processor according to the contact detected
The control signal of output judges the working condition of the contact；
Power supply circuit, the output end of the power supply circuit are sentenced with the voltage detecting circuit, control signal detection circuit and state
Deenergizing connects respectively, to detect circuit and status determination circuit offer electric energy to the voltage detecting circuit, control signal.
2. condition checkout gear according to claim 1, it is characterised in that the voltage detecting circuit includes photoelectric coupling
Device, first resistor, second resistance and 3rd resistor；
The first input end of the photoelectrical coupler passes through the first resistor and the one end of the contact away from the battery pack
Connection, the second input are connected with the negative pole of the battery pack, the first output end passes through the second resistance and the power supply electricity
The output end on road is connected and is connected by the 3rd resistor with the first input end of the status determination circuit, the second output end
Ground connection；
When the contact disconnects, the one end of the contact away from the battery pack is low level, and the photoelectrical coupler disconnects
So that the status determination circuit obtains high level signal by the second resistance and 3rd resistor to the power supply circuit；
In the contact closure, the one end of the contact away from the battery pack is high level, the photoelectrical coupler closure
So that the status determination circuit is grounded to obtain low level signal by the photoelectrical coupler and 3rd resistor.
3. condition checkout gear according to claim 2, it is characterised in that the voltage detecting circuit also includes the one or two
Pole pipe；
First Diode series are between the first resistor and the contact, and the anode of first diode and institute
State contact connection, negative electrode is connected with the first resistor.
4. condition checkout gear according to claim 1, it is characterised in that the control signal detection circuit includes three poles
Pipe, the 4th resistance, the 5th resistance and the 6th resistance；
The base stage of the triode is by the way that the 4th resistance is connected with one end that the coil is connected with processor, colelctor electrode leads to
The 5th resistance is crossed to be connected with the output end of the power supply circuit and by the 6th resistance and the status determination circuit
The second input connection, grounded emitter；
When the processor is not to the coil output control signal, the base stage of the triode is low level, so that described
The colelctor electrode of triode is separated with emitter stage, and the status determination circuit is by the 5th resistance and the 6th resistance to institute
State power supply circuit and obtain high level signal；
When the processor is to the coil output control signal, the base stage of the triode is high level, so that described three
Turned between the colelctor electrode and emitter stage of pole pipe, the status determination circuit is by the triode and the 6th resistance eutral grounding to obtain
Take low level signal.
5. condition checkout gear according to claim 4, it is characterised in that control signal detection circuit also includes the
Two diodes；
Second Diode series are connected between the coil and the 4th resistance, and the anode of second diode
It is connected with the coil, negative electrode is connected with the 4th resistance.
6. according to the condition checkout gear described in claim 1-5 any one, it is characterised in that the status determination circuit is
XOR gate logic；
The first input end of the XOR gate logic is connected with the output end of the voltage detecting circuit, the second input with
The output end connection of the control signal detection circuit, power end are connected with the power supply circuit, earth terminal ground connection；
The first input end of the XOR gate logic be high level signal, the second input be high level signal when, institute
State the output low level signal of XOR gate logic；
The first input end of the XOR gate logic be high level signal, the second input be low level signal when, institute
State the output high level signal of XOR gate logic；
The first input end of the XOR gate logic be low level signal, the second input be high level signal when, institute
State the output high level signal of XOR gate logic；
The first input end of the XOR gate logic be low level signal, the second input be low level signal when, institute
State the output low level signal of XOR gate logic.
7. according to the condition checkout gear described in claim 1-5 any one, it is characterised in that the power supply circuit includes supplying
Power supply and voltage conversion circuit；
The input of the voltage conversion circuit is connected with the positive pole of the power supply, output end and the voltage detecting are electric
Road, control signal detection circuit, status determination circuit connect respectively, after the electric energy of the power supply is carried out into decompression processing
Output to the voltage detecting circuit, control signal detects circuit, status determination circuit.
8. according to the condition checkout gear described in claim 1-5 any one, it is characterised in that the condition checkout gear is also
Including status display circuit；
The input of the status display circuit is connected with the output end of the status determination circuit, with according to the condition adjudgement
The control of circuit shows the working condition of the contact.
9. condition checkout gear according to claim 8, it is characterised in that the status display circuit includes the 7th resistance
And light emitting diode；
The anode of the light emitting diode is by the way that the 7th resistance is connected with the output end of the status determination circuit, negative electrode connects
Ground.
A kind of 10. dynamical system, applied to new-energy automobile, it is characterised in that the dynamical system include battery pack, high pressure after
Condition checkout gear described in electrical equipment, processor and claim 1-9 any one；
The output end of the processor is connected with the high-voltage relay, to control the battery pack by the high-voltage relay
Powered to external circuit, the condition checkout gear is connected with the high-voltage relay, to detect the work of the high-voltage relay
Make state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992175.9A CN107703447A (en) | 2017-10-23 | 2017-10-23 | Condition checkout gear and dynamical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992175.9A CN107703447A (en) | 2017-10-23 | 2017-10-23 | Condition checkout gear and dynamical system |
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Family
ID=61182108
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|---|---|---|---|
| CN201710992175.9A Pending CN107703447A (en) | 2017-10-23 | 2017-10-23 | Condition checkout gear and dynamical system |
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| CN (1) | CN107703447A (en) |
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| CN109188264A (en) * | 2018-09-27 | 2019-01-11 | 东莞市广荣电子制品有限公司 | A kind of circuit breaker state detecting circuit |
| CN110031754A (en) * | 2019-04-16 | 2019-07-19 | 江铃汽车股份有限公司 | Detection device, detection method and the electric car of high-voltage relay electric shock state |
| CN111142016A (en) * | 2018-11-06 | 2020-05-12 | 株洲中车时代电气股份有限公司 | Electrical control screen cabinet fault monitoring system and electrical control screen cabinet |
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Application publication date: 20180216 |