CN110376518A - Diagnostic device, the system and method for high-voltage relay - Google Patents
Diagnostic device, the system and method for high-voltage relay Download PDFInfo
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- CN110376518A CN110376518A CN201910773023.9A CN201910773023A CN110376518A CN 110376518 A CN110376518 A CN 110376518A CN 201910773023 A CN201910773023 A CN 201910773023A CN 110376518 A CN110376518 A CN 110376518A
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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
The application provides a kind of diagnostic device of high-voltage relay, system and method, is related to high-voltage relay technical field.The device includes: controller, the first transistor, second transistor, the first feed circuit and the second feed circuit, wherein: the connection of the grid of controller and the first transistor, the drain electrode of the first transistor is connect with battery, and the source electrode of the first transistor and the first coil end of high-voltage relay connect；The source electrode of the first transistor also passes through the first feed circuit and connect with controller；The connection of the grid of controller and second transistor, the source electrode ground connection of second transistor, the drain electrode of second transistor and the second coil-end of high-voltage relay connect；The drain electrode of second transistor also passes through second feed circuit and connect with the controller.Compared with the existing technology, the application improves the diagnosis coverage to high-voltage relay.
Description
Technical field
This application involves high-voltage relay technical field, in particular to a kind of high-voltage relay diagnostic device, be
System and method.
Background technique
High-voltage relay is also widely applied in electric automobiles, and electric vehicle high-voltage safety is the weight of electric vehicle security fields
Content is wanted, the safety of electric vehicle is directly affected.
In the prior art, electric vehicle generallys use the mode of high-low side driving while controlling the shutdown of high-voltage relay, with
Guarantee reliably to turn off high-voltage relay.Under the requirement of high-voltage safety or functional safety, it is also necessary to high-voltage relay
The driving condition of the high-low side of device is diagnosed.Intelligent drives chip usually can be used, individually flash driving or rand are driven
Dynamic to be driven, this is only applicable to the scene of independent flash driving or the driving of low side.
However, for the high-voltage relay driven simultaneously using high-low side, using above-mentioned diagnostic mode, such logic pair
The current state of high-voltage relay is diagnosed, and be will lead to some failures and is difficult to diagnose, the problem for causing diagnosis coverage not high.
Summary of the invention
The purpose of the application is, in view of the deficiency of the prior art, provides a kind of diagnosis dress of high-voltage relay
It sets, system and method, is difficult to diagnose to solve some failures in the prior art, the problem for causing diagnosis coverage not high.
To achieve the above object, the embodiment of the present application the technical solution adopted is as follows:
In a first aspect, one embodiment of the application provides a kind of diagnostic device of high-voltage relay, described device includes: control
Device, the first transistor, second transistor, the first feed circuit and the second feed circuit processed, in which:
The controller is connect with the grid of the first transistor, and the drain electrode of the first transistor is connect with battery,
The source electrode of the first transistor is connect with the first coil end of the high-voltage relay；The source electrode of the first transistor is also logical
First feed circuit is crossed to connect with the controller；
The controller is connect with the grid of the second transistor, the source electrode of second transistor ground connection, and described the
The drain electrode of two-transistor is connect with the second coil-end of the high-voltage relay；The drain electrode of the second transistor also passes through described
Second feed circuit is connect with the controller；
The controller, for issuing first switch control instruction to the grid of the first transistor, and described in reception
First feedback signal of the source electrode of the first transistor；The controller is also used to issue the to the grid of the second transistor
Two switching control instructions, and receive the second feedback signal of the source electrode of the second transistor；Then according to the first switch
Control instruction, the second switch control instruction, first feedback signal and second feedback signal are exported to first
Access and the second output channel carry out fault diagnosis；First output channel is the source electrode of the first transistor to described the
The output channel of one coil-end, second output channel are that the drain electrode of the second transistor is defeated to second coil-end
Access out.
Optionally, first feed circuit includes: first resistor, second resistance, 3rd resistor；Wherein:
One end of the second resistance is connect with the source electrode of the first transistor, the other end of the second resistance and institute
State controller connection；One end of the second resistance is also connect by the first resistor with predetermined DC power supply, and described second
One end of resistance is also grounded by the 3rd resistor.
Optionally, first feed circuit further include: first capacitor；The other end of the second resistance also passes through described
First capacitor ground connection.
Optionally, second feed circuit includes: the 4th resistance, the 5th resistance, wherein one end of the 4th resistance
It is connect with the drain electrode of the second transistor, the other end of the 4th resistance is connect with the controller；4th resistance
The other end also pass through the 5th resistance eutral grounding.
Optionally, second feed circuit further include: the second capacitor；The other end of 4th resistance also passes through described
Second capacity earth.
Optionally, first diode, the one or two pole are also connected between the source electrode and drain electrode of the first transistor
The anode of pipe is connect with the source electrode of the first transistor, the drain electrode of the cathode of the first diode and the first transistor
Connection.
Optionally, the second diode, the two or two pole are also connected between the source electrode and drain electrode of the second transistor
The anode of pipe is connect with the source electrode of the second transistor, the drain electrode of the cathode and the second transistor of second diode
Connection.
Second aspect, the application type embodiment additionally provide a kind of diagnostic system of high-voltage relay, comprising: two high pressures
Diagnostic device, high-voltage load, two high-voltage relays and the vehicle-mounted power supply unit of relay, wherein；Two high-voltage relays
The diagnostic device of device is respectively the described in any item devices of above-mentioned first aspect；
The diagnostic device of each high-voltage relay is connect with two coil-ends of a high-voltage relay, and two
The load end of the high-voltage relay is connect with the high-voltage load respectively, wherein the power end of a high-voltage relay
It is connect with the anode of the vehicle-mounted power supply unit, the power end of another high-voltage relay and the vehicle-mounted power supply unit
Cathode connection.
The third aspect, another embodiment of the application provide a kind of diagnostic method of high-voltage relay, are applied to above-mentioned the
In diagnostic device described in one side, which comprises
The controller issues first switch control instruction to the grid of the first transistor, and it is brilliant to receive described first
First feedback signal of the source electrode of body pipe；
The controller issues second switch control instruction to the grid of the second transistor, and it is brilliant to receive described second
Second feedback signal of the drain electrode of body pipe；
The controller is according to the first switch control instruction, the second switch control instruction, first feedback
Signal and second feedback signal carry out fault diagnosis to the first output channel and the second output channel；
Wherein, first output channel is that the output at source electrode to the first coil end of the first transistor is logical
Road, second output channel be the second transistor drain electrode to second coil-end output channel.
Optionally, the controller is according to the first switch control instruction, the second switch control instruction, described
One feedback signal and second feedback signal carry out fault diagnosis to the first output channel and the second output channel, comprising:
The controller handles first feedback signal, obtains the first feedback voltage level, anti-to described second
Feedback signal is handled, and the second feedback voltage level is obtained；
The controller is according to the logical value of the first switch control instruction, the logic of the second switch control instruction
Value, first feedback voltage level, second feedback voltage level and preset truth table, determine first output channel
And the state of second output channel；The state is for indicating first output channel and second output channel
With the presence or absence of failure；
The truth table include: Different Logic value from the case where different default values of feedback, corresponding output channel state.
Fourth aspect, another embodiment of the application provide a kind of diagnostic device of high-voltage relay, comprising: processor,
Storage medium and bus, the storage medium are stored with the executable machine readable instructions of the processor, work as high-voltage relay
Diagnostic device operation when, by bus communication between the processor and the storage medium, described in the processor executes
The step of machine readable instructions, the method any with the execution such as above-mentioned third aspect.
5th aspect, another embodiment of the application provide a kind of storage medium, calculating are stored on the storage medium
Machine program is executed when the computer program is run by processor such as the step of the above-mentioned third aspect any the method.
The beneficial effect of the application is: using the diagnostic device and system of high-voltage relay provided by the present application, passing through control
Device processed issues control instruction, controls the switch of the first transistor and second transistor respectively, is then adopted by the first feed circuit
Collect the first feedback signal of the first transistor, the second feedback signal of the second feed circuit acquisition second transistor, then passes through control
Device processed acquires each feedback signal, to realize that controller can not only issue signal, while can acquire the signal fed back,
And according to signal and acquisition signal is issued, fault diagnosis is carried out to the corresponding access of two coil-ends of high-voltage relay, effectively
It prevents the unilateral some failures of diagnosis bring to be difficult to diagnose, improves the diagnosis coverage to high-voltage relay, realize pair
It is efficiently diagnosed while high-voltage relay high-low side, ensure that the trouble free service of vehicle.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the diagnostic device for the high-voltage relay that one embodiment of the application provides；
Fig. 2 is the structural schematic diagram of the diagnostic device for the high-voltage relay that another embodiment of the application provides；
Fig. 3 is the structural schematic diagram of the diagnostic device for the high-voltage relay that one embodiment of the application provides；
Fig. 4 is the structural schematic diagram of the diagnostic system for the high-voltage relay that one embodiment of the application provides；
Fig. 5 is the flow diagram of the diagnostic method for the high-voltage relay that one embodiment of the application provides；
Fig. 6 is the structural schematic diagram of the diagnostic device for the high-voltage relay that one embodiment of the application provides.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.
High-voltage relay: being a kind of when the variation of the input quantity (energizing quantity) of high-tension circuit reaches prescribed requirement, in electricity
Make controlled volume that the electric appliance of scheduled Spline smoothing occur in gas output circuit.High-voltage relay is a kind of electronic control device, it
With control system (also known as input circuit) and by control system (also known as output loop), it is usually applied to automatic control circuit
In.
Fig. 1 is the structural schematic diagram of the diagnostic device for the high-voltage relay that one embodiment of the application type provides, such as Fig. 1 institute
Show, which includes: controller 110, the first transistor 120, second transistor 130, the first feed circuit 140 and the second feedback
Circuit 150, in which:
Controller 110 is connect with the grid of the first transistor 120, and the drain electrode of the first transistor 120 is connect with battery, and first
The source electrode of transistor 120 and the first coil end of high-voltage relay connect；The source electrode of the first transistor 120 also passes through the first feedback
Circuit 140 is connect with controller 110.Controller 110 is connect with the grid of second transistor 130, the source electrode of second transistor 130
Ground connection, the drain electrode of second transistor 130 and the second coil-end of high-voltage relay connect；The drain electrode of second transistor 130 is also logical
The second feed circuit 150 is crossed to connect with controller 110.
Wherein, controller 110 for issuing first switch control instruction to the grid of the first transistor 120, and receive the
First feedback signal of the source electrode of one transistor 120；Controller 110 is also used to issue second to the grid of second transistor 130
Switching control instruction, and receive the second feedback signal of the source electrode of second transistor 130；Then referred to according to first switch control
It enables, second switch control instruction, the first feedback signal and the second feedback signal, to the first output channel and the second output channel
Carry out fault diagnosis；First output channel is that the source electrode of the first transistor 120 to the output channel at first coil end, second exports
Access be second transistor 130 drain electrode to the second coil-end output channel.
Controller 110 is handled the first feedback signal after getting the first feedback signal, obtains the first feedback electricity
Pressure value；After getting the second feedback signal, the second feedback signal is handled, obtains the second feedback voltage level.
Subsequent controller 110 is according to the logical value of first switch control instruction, the logical value of second switch control instruction, the
One feedback voltage level, the second feedback voltage level and preset truth table determine the first output channel and the second output channel
State；Wherein, the state of each access is for indicating that the first output channel and/or the second output channel whether there is failure.
Wherein, first coil end can be the end L of high-voltage relay shown in Fig. 1；Second coil-end can be in Fig. 1
Shown in high-voltage relay the end R.
Specifically, after controller receives the instruction that diagnostic task starts every time, controller 110 inquires first switch control first
Make the logical value of instruction and the logical value of second switch control instruction, while the first feedback voltage level of readback and the second feedback voltage
Value, the value of readback is compared with the value in preset truth table, is obtained diagnostic result and is exported.
Optionally, the sign on of diagnostic task can be the sign on that user is issued by controller, or
After each controller issues switch control signal, the beginning of diagnostic task is just indicated, specific diagnostic task sign on is set
It sets and needs to select according to user, the application does not do any restrictions herein.
Optionally, if the first output channel and/or the second output channel that diagnosis obtains high-voltage relay are there are failure,
Controller 110 can execute corresponding movement according to user setting, such as into safe condition or standby etc., with specific reference to
Family needs to be arranged, and the application does not do any restrictions herein.
Optionally, for some undiagnosable situations, the first control instruction and/or the second control instruction can be jumped
State, and by controller 110 after state transition, first switch control instruction is issued to the grid of the first transistor 120 respectively,
And receive the first feedback signal of the source electrode of the first transistor 120；Second switch control is issued to the grid of second transistor 130
Instruction, and receive the second feedback signal of the source electrode of second transistor 130；Then it is opened according to first switch control instruction, second
Control instruction, the first feedback signal and the second feedback signal are closed, the first output channel and the second output channel are carried out again
Fault diagnosis.
Wherein, it may include different first switch controls that controller 110, which carries out preset truth table used by fault diagnosis,
Make the logical value, the logical value of second switch control instruction, default first feedback voltage level, default second feedback voltage level of instruction
Corresponding different diagnositc decision according to judgement result as a result, determine the first output channel and the second output channel with the presence or absence of event
Barrier.
Optionally, the voltage value of voltage value and default second feedback signal that the first feedback signal is preset in truth table is one
There are some mistakes for the voltage value of a value range, that is, the voltage value of the first feedback signal for allowing actually to obtain and the second feedback signal
The precision setting needed according to user is arranged in difference, specific value range, and the application does not do any restrictions herein.
In the present embodiment, control instruction is issued by controller, controls opening for the first transistor and second transistor respectively
It closes, the first feedback signal of the first transistor is then acquired by the first feed circuit, the second feed circuit acquires the second crystal
Second feedback signal of pipe, then each feedback signal is acquired by controller, to realize that controller can not only issue signal, together
When can acquire the signal fed back, it is corresponding to two coil-ends of high-voltage relay and according to issuing signal and acquisition is believed
Access carries out fault diagnosis, effectively prevents the unilateral some failures of diagnosis bring and is difficult to diagnose, improves to high-voltage relay
The diagnosis coverage of device realizes to the efficiently diagnosis simultaneously of high-voltage relay high-low side, ensure that the trouble free service of vehicle.
Optionally, in diagnostic device as shown above, the first feed circuit 140 can include: first resistor R1, second resistance
R2,3rd resistor R3；Wherein: one end of second resistance R2 is connect with the source electrode of the first transistor 120, and second resistance R2's is another
End is connect with controller 110；One end of second resistance R2 also passes through first resistor R1 and connect with predetermined DC power supply, second resistance
One end of R2 also passes through 3rd resistor R3 and is grounded.
Optionally, second resistance R2 and 3rd resistor in one embodiment of the application, in the first feed circuit 140
The resistance value of R3 is identical；But in other embodiments, second resistance R2 and the resistance value of 3rd resistor R3 can also be different, and only need to diagnose
Each voltage range in truth table can be distinguished clearly, and the application does not do any restrictions to resistance value at this.
Optionally, in the second feed circuit 150 can include: the 4th resistance R4, the 5th resistance R5, wherein the 4th resistance R4
One end connect with the drain electrode of second transistor 130, the other end of the 4th resistance R4 is connect with controller 110；4th resistance R4
The other end also pass through the 5th resistance R5 ground connection.
Optionally, in one embodiment of the application, in the second feed circuit 150, the resistance value of the 4th resistance R4 is greater than
The resistance value of 5th resistance R5, and there are preset ratios for the resistance value of the 4th resistance R4 and the 5th resistance R5；But in other embodiments,
The resistance value of 4th resistance R4 and the 5th resistance R5 can also be different, and each voltage range that need to only diagnose in truth table being capable of circle of good definition
Point, the application does not do any restrictions herein.
It should be noted that first switch control instruction and second switch control instruction are 0 or 1 logical value, first
Feedback signal and the second feedback signal are analog signal, and the first feedback signal is the output end warp of the first transistor 120
It crosses after the conditioning of resistor network (first resistor R1, second resistance R2,3rd resistor R3) and to obtain, the second feedback signal is second
What the output end of transistor 130 obtained after the conditioning of resistor network (the 4th resistance R4, the 5th resistance R2).
Fig. 2 is the structural schematic diagram of the diagnostic device for the high-voltage relay that another embodiment of the application provides, such as Fig. 2 institute
Show, the first feed circuit 140 of the device further include: first capacitor C1；The other end of second resistance R2 also passes through first capacitor
C1 ground connection.First capacitor C1 is used to filter out the noise between second resistance R2 and controller 110 on route, reduces by the first feedback letter
Number interference, guarantee the first return signal accuracy.
Optionally, the second feed circuit 150 further include: the second capacitor C2；The other end of 4th resistance R4 also passes through second
Capacitor C2 ground connection.Second capacitor C2 is used to filter out the noise between second resistance R4 and controller 110 on route, and it is anti-to reduce second
The interference of feedback signal guarantees the accuracy of the second return signal.
The structural schematic diagram of the diagnostic device for the high-voltage relay that another embodiment of Fig. 3 the application provides, as shown in figure 3,
First diode, the anode and the first transistor of first diode are also connected between the source electrode and drain electrode of the first transistor 120
120 source electrode connection, the cathode of first diode are connect with the drain electrode of the first transistor 120.The source electrode of second transistor 130 and
The second diode is also connected between drain electrode, the anode of the second diode is connect with the source electrode of second transistor 130, the two or two pole
The cathode of pipe is connect with the drain electrode of second transistor 130.
Diode is installed between the source electrode and drain electrode of the first transistor 120, protection the first transistor 120 can be played
Effect prevents the first transistor 120 because electric current adverse current causes to damage.
Diode is installed between the source electrode and drain electrode of second transistor 130, protection second transistor 130 can be played
Effect prevents second transistor 130 because electric current adverse current causes to damage.
Optionally, which may also include that display 160, display 160 are connect with controller 110, for receiving and showing
Show the diagnostic result that controller 110 is sent, wherein diagnostic result can include: be used to indicate the first output channel and the second output
Access whether there is the instruction information of failure.
Wherein, the first output channel is the source electrode of the first transistor to the output channel at first coil end, and the second output is logical
Road be second transistor drain electrode to the second coil-end output channel.
Diagnostic result may include: with the presence or absence of failure and specific failure problems.Such as: diagnosis nothing is mistaken, controller
110 controllable displays show " diagnosis is errorless, and each output channel is normal "；When diagnosis is out of order, controller 110 can control aobvious
Show that device shows fault type, while issuing rapid buzzer by alarm, such as: " there are failures！Q1 output short-circuit to electricity
Source！".It is particularly shown content and needs to design according to user, the application does not do any restrictions herein.
In one embodiment of the application, the parameter setting of each component is as follows: cell voltage 12V, DC power supply
It is 47K Ω for 5V, R1, R3 is 47K Ω, and R4 is 47K Ω, and R5 is 15K Ω, and at this time in embodiment, corresponding default truth table can
Think shown in following table 1:
Table 1:
Using the diagnostic device of high-voltage relay provided by the present application, due to the first feed circuit and the second feed circuit
Setting, realizes the diagnostic circuit inside not against controller, builds whether each output channel of detection is deposited by external circuit
It in failure, effectively prevents the unilateral some failures of diagnosis bring and is difficult to diagnose, the problem for causing diagnosis coverage not high mentions
High covering diagnosis degree, real-time is high, realizes height and just efficiently diagnoses simultaneously, ensure that the normal work of vehicle.And the
The structure of one feed circuit and the second feed circuit is simple, so circuit cost is lower.
Fig. 4 is the structural schematic diagram of the diagnostic system for the high-voltage relay that one embodiment of the application provides, comprising: two height
230, two high-voltage relays 210 of diagnostic device 100, high-voltage load and vehicle-mounted power supply unit 220 of potential relay, wherein；Two
100 device of diagnosis of a high-voltage relay is respectively any of the above-described device.
The diagnostic device 100 of each high-voltage relay is connect with two coil-ends of a high-voltage relay 210, two height
The load end of potential relay 210 is connect with high-voltage load respectively, wherein the power end of a high-voltage relay 210 and vehicle-mounted confession
The anode connection of electric installation 220, the power end of another high-voltage relay 210 are connect with the cathode of vehicle-mounted power supply unit 220.
The diagnostic system for the high-voltage relay that this system uses and the diagnosis dress of high-voltage relay provided by the above embodiment
Set identical, details are not described herein for bring beneficial effect.
Fig. 5 is a kind of flow diagram of the diagnostic method for high-voltage relay that one embodiment of the application provides, such as Fig. 1 institute
Show, this method comprises:
S301: controller issues first switch control instruction to the grid of the first transistor, and receives the first transistor
First feedback signal of source electrode.
S302: controller issues second switch control instruction to the grid of second transistor, and receives second transistor
Second feedback signal of drain electrode.
Wherein, first switch control instruction and second switch control instruction are 0 or 1 logical value, the first feedback signal
For the analog signal that the output end of the first transistor obtains after the conditioning of the first feed circuit, the second feedback signal is second
The analog signal that the output end of transistor obtains after the conditioning of the second feed circuit.
S303: controller is according to first switch control instruction, second switch control instruction, the first feedback signal and second
Feedback signal carries out fault diagnosis to the first output channel and the second output channel.
Wherein, the first output channel is the source electrode of the first transistor to the output channel at first coil end, and the second output is logical
Road be second transistor drain electrode to the second coil-end output channel.
Optionally, step S303 includes: that controller handles the first feedback signal, obtains the first feedback voltage level,
Second feedback signal is handled, the second feedback voltage level is obtained.
Controller is according to the logical value of first switch control instruction, the logical value of second switch control instruction, the first feedback
Voltage value, the second feedback voltage level and preset truth table, determine the state of the first output channel and the second output channel；
State is for indicating that the first output channel and the second output channel whether there is failure.
Truth table include: Different Logic value from the case where different default values of feedback, corresponding output channel state.
This method is applied in the diagnostic device for the high-voltage relay that previous embodiment provides, realization principle and technology effect
Seemingly, details are not described herein for fruit.
The above module can be arranged to implement one or more integrated circuits of above method, such as: one
Or multiple specific integrated circuits (Application Specific Integrated Circuit, abbreviation ASIC), or, one
Or multi-microprocessor (digital singnal processor, abbreviation DSP), or, one or more field programmable gate
Array (Field Programmable Gate Array, abbreviation FPGA) etc..For another example, when some above module passes through processing elements
When the form of part scheduler program code is realized, which can be general processor, such as central processing unit (Central
Processing Unit, abbreviation CPU) or it is other can be with the processor of caller code.For another example, these modules can integrate
Together, it is realized in the form of system on chip (system-on-a-chip, abbreviation SOC).
Fig. 6 is the structural schematic diagram for the diagnostic device of high-voltage relay that another embodiment of the application provides, the high pressure after
The acquisition equipment of the diagnostic device of electric appliance can integrate the chip in terminal device or terminal device.
The acquisition equipment of the diagnostic device of the high-voltage relay includes: processor 501, storage medium 502 and bus 503.
Processor 501 is for storing program, the program that processor 501 calls storage medium 502 to store, to execute above-mentioned side
Method embodiment.Specific implementation is similar with technical effect, and which is not described herein again.
Optionally, the application also provides a kind of program product, such as storage medium, is stored with computer on the storage medium
Program, including program, the program execute above method embodiment when being run by processor.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of device or unit
Letter connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) or processor (English: processor) execute this Shen
Please each embodiment the method part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(English: Read-Only Memory, abbreviation: ROM), random access memory (English: Random Access Memory, letter
Claim: RAM), the various media that can store program code such as magnetic or disk.
Claims (10)
1. a kind of diagnostic device of high-voltage relay, which is characterized in that described device includes: controller, the first transistor, second
Transistor, the first feed circuit and the second feed circuit, in which:
The controller is connect with the grid of the first transistor, and the drain electrode of the first transistor is connect with battery, described
The source electrode of the first transistor is connect with the first coil end of the high-voltage relay；The source electrode of the first transistor also passes through institute
The first feed circuit is stated to connect with the controller；
The controller is connect with the grid of the second transistor, and the source electrode ground connection of the second transistor, described second is brilliant
The drain electrode of body pipe is connect with the second coil-end of the high-voltage relay；The drain electrode of the second transistor also passes through described second
Feed circuit is connect with the controller；
The controller for issuing first switch control instruction to the grid of the first transistor, and receives described first
First feedback signal of the source electrode of transistor；The controller is also used to issue second to the grid of the second transistor and open
Control instruction is closed, and receives the second feedback signal of the source electrode of the second transistor；Then it is controlled according to the first switch
Instruction, the second switch control instruction, first feedback signal and second feedback signal, to the first output channel
Fault diagnosis is carried out with the second output channel；First output channel is the source electrode of the first transistor to the First Line
The output channel at end is enclosed, second output channel is that the output of drain electrode to second coil-end of the second transistor is logical
Road.
2. device as described in claim 1, which is characterized in that first feed circuit includes: first resistor, the second electricity
Resistance, 3rd resistor；Wherein:
One end of the second resistance is connect with the source electrode of the first transistor, the other end of the second resistance and the control
Device connection processed；One end of the second resistance is also connect by the first resistor with predetermined DC power supply, the second resistance
One end be also grounded by the 3rd resistor.
3. device as claimed in claim 2, which is characterized in that first feed circuit further include: first capacitor；Described
The other end of two resistance is also grounded by the first capacitor.
4. device as described in claim 1, which is characterized in that second feed circuit includes: the 4th resistance, the 5th electricity
Resistance, wherein one end of the 4th resistance is connect with the drain electrode of the second transistor, the other end of the 4th resistance and institute
State controller connection；The other end of 4th resistance also passes through the 5th resistance eutral grounding.
5. device as claimed in claim 4, which is characterized in that second feed circuit further include: the second capacitor；Described
The other end of four resistance also passes through second capacity earth.
6. such as device as claimed in any one of claims 1 to 5, which is characterized in that between the source electrode and drain electrode of the first transistor
It is also connected with first diode, the anode of the first diode is connect with the source electrode of the first transistor, and the described 1st
The cathode of pole pipe is connect with the drain electrode of the first transistor.
7. such as device as claimed in any one of claims 1 to 5, which is characterized in that between the source electrode and drain electrode of the second transistor
It is also connected with the second diode, the anode of second diode is connect with the source electrode of the second transistor, and the described 2nd 2
The cathode of pole pipe is connect with the drain electrode of the second transistor.
8. a kind of diagnostic system of high-voltage relay characterized by comprising the diagnostic device of two high-voltage relays, high pressure
Load, two high-voltage relays and vehicle-mounted power supply unit, wherein；The diagnostic device of two high-voltage relays is respectively above-mentioned
Device of any of claims 1-9；
The diagnostic device of each high-voltage relay is connect with two coil-ends of a high-voltage relay, described in two
The load end of high-voltage relay is connect with the high-voltage load respectively, wherein the power end of high-voltage relay and institute
State the anode connection of vehicle-mounted power supply unit, the cathode of the power end of another high-voltage relay and the vehicle-mounted power supply unit
Connection.
9. a kind of diagnostic method of high-voltage relay, which is characterized in that examined applied to any described in the claims 1-7
Disconnected device, which comprises
The controller issues first switch control instruction to the grid of the first transistor, and receives the first transistor
Source electrode the first feedback signal；
The controller issues second switch control instruction to the grid of the second transistor, and receives the second transistor
Drain electrode the second feedback signal；
The controller is according to the first switch control instruction, the second switch control instruction, first feedback signal
And second feedback signal, fault diagnosis is carried out to the first output channel and the second output channel；
Wherein, first output channel is output channel of the source electrode of the first transistor to the first coil end, institute
State the second output channel be the second transistor drain electrode to second coil-end output channel.
10. method as claimed in claim 9, which is characterized in that the controller is according to the first switch control instruction, institute
Second switch control instruction, first feedback signal and second feedback signal are stated, to the first output channel and second
Output channel carries out fault diagnosis, comprising:
The controller handles first feedback signal, obtains the first feedback voltage level, to second feedback letter
It number is handled, obtains the second feedback voltage level；
The controller according to the logical value of the first switch control instruction, the logical value of the second switch control instruction,
First feedback voltage level, second feedback voltage level and preset truth table, determine first output channel with
And the state of second output channel；The state is used to indicate first output channel and second output channel is
It is no that there are failures；
The truth table include: Different Logic value from the case where different default values of feedback, corresponding output channel state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910773023.9A CN110376518A (en) | 2019-08-21 | 2019-08-21 | Diagnostic device, the system and method for high-voltage relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910773023.9A CN110376518A (en) | 2019-08-21 | 2019-08-21 | Diagnostic device, the system and method for high-voltage relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110376518A true CN110376518A (en) | 2019-10-25 |
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ID=68260158
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910773023.9A Withdrawn CN110376518A (en) | 2019-08-21 | 2019-08-21 | Diagnostic device, the system and method for high-voltage relay |
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| CN (1) | CN110376518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090272A (en) * | 2019-12-11 | 2020-05-01 | 一汽解放汽车有限公司 | Fault diagnosis device and method and vehicle |
| CN111880088A (en) * | 2020-07-23 | 2020-11-03 | 上海英恒电子有限公司 | Relay bilateral control and diagnosis circuit and method and battery management system |
-
2019
- 2019-08-21 CN CN201910773023.9A patent/CN110376518A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090272A (en) * | 2019-12-11 | 2020-05-01 | 一汽解放汽车有限公司 | Fault diagnosis device and method and vehicle |
| CN111090272B (en) * | 2019-12-11 | 2021-09-28 | 一汽解放汽车有限公司 | Fault diagnosis device and method and vehicle |
| CN111880088A (en) * | 2020-07-23 | 2020-11-03 | 上海英恒电子有限公司 | Relay bilateral control and diagnosis circuit and method and battery management system |
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