CN106564382A - High voltage loop interlocking system for new energy automobile and control method thereof - Google Patents
High voltage loop interlocking system for new energy automobile and control method thereof Download PDFInfo
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- CN106564382A CN106564382A CN201610858684.8A CN201610858684A CN106564382A CN 106564382 A CN106564382 A CN 106564382A CN 201610858684 A CN201610858684 A CN 201610858684A CN 106564382 A CN106564382 A CN 106564382A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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Abstract
The invention discloses a high voltage loop interlocking system for a new energy automobile and a control method thereof, which belong to the field of electronic technology. The high voltage loop interlocking system comprises a detecting circuit and a CAN circuit, wherein an input end and an output end of each high voltage part are respectively connected with one end of the detecting circuit; the other end of the detecting circuit is connected with one end of the CAN circuit; the other end of the CAN circuit is connected with a CAN bus of the new energy automobile; the detecting circuit is used for receiving first loop interlocking signals, which are output by the input ends of the high voltage parts, and second loop interlocking signals, which are output by the output ends of the high voltage parts; the first loop interlocking signals and the second loop interlocking signals are respectively converted into first level signals and second level signals; according to the first level signals and the second level signals, the interlocking state of the high voltage parts is determined and the interlocking state is output to the CAN circuit; and the CAN circuit is used for receiving the interlocking state output by the detecting circuit and outputting the interlocking state to the CAN bus.
Description
Technical field
The present invention relates to electronic technology field, the high-pressure-loop interlock system of more particularly to a kind of new-energy automobile and its control
Method processed.
Background technology
In order to improve the driveability of new-energy automobile, the cell voltage that new-energy automobile is used also more and more higher.With
The security protection of the raising of cell voltage, country and local regulation to new-energy automobile requires also constantly to improve；If new energy
High voltage component in the automobile of source breaks down, and will produce that Keep Clear-High Voltage；Accordingly, it would be desirable to the high-pressure-loop for passing through new-energy automobile
Whether interlock system, detection new-energy automobile has high voltage component to break down.
In prior art, the high voltage component interlocking terminal series-shunt of all high voltage components in new-energy automobile is got up to be formed
One high-pressure-loop interlock system, selects a high voltage component from the high-pressure-loop interlock system；When new-energy automobile starts
When, the high voltage component periodic triggers loop interlocking signal of the selection is set, and along direction pivots clockwise or counter-clockwise by the ring
Road interlocking signal is exported to last high voltage component in high-pressure-loop interlock system；The collection electricity of last high voltage component
Detect whether the loop interlocking signal is abnormal in road；If the loop interlocking signal exception, in determining the high-pressure-loop interlock system
The high voltage component that has break down.
During the present invention is realized, inventor has found that prior art at least has problems with：
Can only detect in new-energy automobile in prior art has high voltage component to break down, but can not detect and provide
Body is which high voltage component breaks down；Therefore, abort situation can not be locked in prior art.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of high-pressure-loop interlock system of new-energy automobile and
Its control method.Technical scheme is as follows：
In a first aspect, the invention provides a kind of high-pressure-loop interlock system of new-energy automobile, the high-pressure-loop is mutual
Lock system includes：Detection circuit and controller area network circuit；
For each high voltage component in new-energy automobile, the input and outfan of the high voltage component respectively with institute
State detection circuit on one side to be connected, the other end of the detection circuit is connected with one end of the CAN circuit, the CAN circuit
The other end is connected with the CAN of the new-energy automobile；
The detection circuit is used to receive the first loop interlocking signal and described of the input output of the high voltage component
Second loop interlocking signal of the outfan output of high voltage component, respectively by the first loop interlocking signal and second ring
Road interlocking signal is converted to the first level signal and second electrical level signal, according to first level signal and the second electrical level
Signal, determines the interlocking state of the high voltage component, and the interlocking state is exported to the CAN circuit；
The CAN circuit is used to receive the interlocking state of the detection circuit output, by interlocking state output
To the CAN.
In a kind of possible design, the detection circuit includes the first process circuit and the first governor circuit；
One end of first process circuit is connected respectively with the input and outfan of the high voltage component, and described first
The other end of process circuit is connected with one end of first governor circuit, the other end of first governor circuit with it is described
One end connection of CAN circuit；
First process circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, point
The first loop interlocking signal and the second loop interlocking signal the first level signal and second electrical level letter are not converted to into
Number, according to first level signal and the second electrical level signal, determine the interlocking state of the high voltage component, will be described mutual
Lock status is exported to first governor circuit；
First governor circuit is used to receive the interlocking state of the first process circuit output, by the interlocking
Signal output gives the CAN circuit.
In alternatively possible design, first process circuit includes that interlocking signal processing unit and the first logic are believed
Number processing unit；
One end of the interlocking signal processing unit is connected respectively with the input and outfan of the high voltage component, described
The other end of interlocking signal processing unit is connected with one end of the first logical signal processing unit, first logical signal
The other end of processing unit is connected with one end of first governor circuit；
The interlocking signal processing unit is used to receive the first loop interlocking signal and second loop interlocking letter
Number, respectively the first loop interlocking signal and the second loop interlocking signal are converted to into first level signal and institute
Second electrical level signal is stated, by first level signal and the second electrical level signal output first logical signal process is given
Unit；
The first logical signal processing unit is used to receive first level letter of the interlocking signal unit output
Number and the second electrical level signal, according to first level signal and the second electrical level signal, determine the high voltage component
Interlocking state, the interlocking state is exported to first governor circuit.
In alternatively possible design, the detection circuit includes second processing circuit and the second governor circuit；
One end of the second processing circuit is connected respectively with the input and outfan of the high voltage component, and described second
The other end of process circuit is connected with one end of second governor circuit, the other end of second governor circuit with it is described
One end connection of CAN circuit；
The second processing circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, point
The first loop interlocking signal and the second loop interlocking signal the first level signal and second electrical level letter are not converted to into
Number, give second governor circuit by first level signal and the second electrical level signal output；
Second governor circuit is used to receiving first level signal of the second processing circuit output and described
Second electrical level signal, according to first level signal and the second electrical level signal, determines the interlocking shape of the high voltage component
State, the interlocking state is exported to the CAN circuit.
In alternatively possible design, second governor circuit includes the second logical signal processing unit and master control list
Unit；
One end of the second logical signal processing unit is connected with one end of the second processing circuit, and described second patrols
The other end of volume signal processing unit is connected with one end of the main control unit, the other end of the main control unit and the CAN
One end connection of circuit；
The second logical signal processing unit is used to receive first level letter of the second processing circuit output
Number and the second electrical level signal, according to first level signal and the second electrical level signal, determine the high voltage component
Interlocking state, the interlocking state is exported to the main control unit；
The main control unit is used to receive the interlocking state of the second logical signal processing unit output, will be described
Interlocking state is exported to the CAN circuit.
Second aspect, embodiments provides a kind of controlling party of the high-pressure-loop interlock system of new-energy automobile
Method, methods described includes：
For each high voltage component in new-energy automobile, the first ring of the input output of the high voltage component is received
Second loop interlocking signal of the outfan output of road interlocking signal and the high voltage component；
Respectively by the first loop interlocking signal and the second loop interlocking signal be converted to the first level signal and
Second electrical level signal；
According to first level signal and the second electrical level signal, the interlocking state of the high voltage component is determined.
It is described according to first level signal and the second electrical level signal in a kind of possible design, determine institute
The interlocking state of high voltage component is stated, including：
Determine whether first level signal and the second electrical level signal identical, if first level signal and
The second electrical level signal is identical, and the interlocking state for determining the high voltage component is closure state；If the first level letter
Number and the second electrical level signal differ, determine the high voltage component interlocking state be off-state.
It is described according to first level signal and the second electrical level signal in alternatively possible design, it is determined that
The interlocking state of the high voltage component, including：
By with non-algorithm, calculate between first level signal and the second electrical level signal with non-result；
If described is low level with non-result, the interlocking state for determining the high voltage component is closure state；
If described is high level with non-result, the interlocking state for determining the high voltage component is off-state.
In another possible design, methods described also includes：
If the interlocking state of the high voltage component disconnects the output main relay of the high voltage component to disconnect shape, and
Reported to the police.
In another possible design, methods described also includes：
The part mark of the high voltage component is obtained, the corresponding relation of the part mark and the interlocking state is set up.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
Description of the drawings
Fig. 1 is a kind of structural representation of the high-pressure-loop interlock system of new-energy automobile that the embodiment of the present invention 1 is provided；
Fig. 2 is a kind of control method of the high-pressure-loop interlock system of new-energy automobile that the embodiment of the present invention 2 is provided
Flow chart；
Fig. 3 is a kind of structural representation of the high-pressure-loop interlock system of new-energy automobile that the embodiment of the present invention 3 is provided；
Fig. 4 is the structural representation of the high-pressure-loop interlock system of another kind of new-energy automobile that the embodiment of the present invention 3 is provided
Figure；
Fig. 5 is the structural representation of the high-pressure-loop interlock system of another kind of new-energy automobile that the embodiment of the present invention 3 is provided
Figure；
Fig. 6 is the structural representation of the high-pressure-loop interlock system of another kind of new-energy automobile that the embodiment of the present invention 3 is provided
Figure；
Fig. 7 is a kind of control method of the high-pressure-loop interlock system of new-energy automobile that the embodiment of the present invention 4 is provided
Flow chart.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Current, the high voltage component interlocking terminal series-shunt of all high voltage components in new-energy automobile is got up to form one
High-pressure-loop interlock system, interlocks terminal and triggers loop interlocking by a high voltage component in a high-pressure-loop interlock system
Signal to detect high-pressure-loop interlock system in whether have high voltage component to break down；Therefore, new-energy automobile can only be detected
In have high voltage component to break down, but can not detect specifically which high voltage component breaks down, cause detect standard
Exactness is low.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
Embodiment 1
Embodiments provide a kind of high-pressure-loop interlock system of new-energy automobile, referring to Fig. 1, the high-pressure-loop
Interlock system includes detection circuit 101 and CAN (Controller Area Network, controller local area network) circuit 102.
The input and outfan of the high voltage component in new-energy automobile is connected respectively with detection circuit 101 one end, detects
The other end of circuit 101 is connected with one end of CAN circuit 102, the other end of CAN circuit 102 and the CAN of new-energy automobile
It is connected；
Detection circuit 101 is used to receive the first loop interlocking signal and the high-voltage section of the input output of the high voltage component
Second loop interlocking signal of the outfan output of part, respectively changes the first loop interlocking signal and the second loop interlocking signal
For the first level signal and second electrical level signal, according to the first level signal and second electrical level signal, the high voltage component is determined
Interlocking state, interlocking state is exported to CAN circuit 102；
CAN circuit 102 is used for the interlocking state of the output of receiving test circuit 101, by interlocking state output to CAN.
Optionally, detect that circuit 101 includes the first process circuit and the first governor circuit；
One end of first process circuit is connected respectively with the input and outfan of the high voltage component, the first process circuit
The other end is connected with one end of the first governor circuit, and the other end of the first governor circuit is connected with one end of CAN circuit 102；
First process circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively by the first loop
Interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, according to the first level signal and
Second electrical level signal, determines the interlocking state of the high voltage component, and interlocking state is exported to the first governor circuit；
First governor circuit is used to receive the interlocking state of the first process circuit output, and interlocking signal is exported into electric to CAN
Road 102.
Optionally, the first process circuit includes interlocking signal processing unit and the first logical signal processing unit；
One end of interlocking signal processing unit is connected respectively with the input and outfan of the high voltage component, at interlocking signal
Reason unit the other end be connected with one end of the first logical signal processing unit, the other end of the first logical signal processing unit and
One end of first governor circuit is connected；
Interlocking signal processing unit is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively by first
Loop interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, by the first level signal
The first logical signal processing unit is given with second electrical level signal output；
First logical signal processing unit is used to receive first level signal and second electrical level of the output of interlocking signal unit
Signal, according to the first level signal and second electrical level signal, determines the interlocking state of the high voltage component, by interlocking state export to
First governor circuit.
Optionally, detect that circuit 101 includes second processing circuit and the second governor circuit；
One end of second processing circuit is connected respectively with the input and outfan of the high voltage component, second processing circuit
The other end is connected with one end of the second governor circuit, and the other end of the second governor circuit is connected with one end of CAN circuit 102；
Second processing circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively by the first loop
Interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, by the first level signal and
Two level signals are exported to the second governor circuit；
Second governor circuit is used to receive first level signal and second electrical level signal of second processing circuit output, according to
First level signal and second electrical level signal, determine the interlocking state of the high voltage component, and interlocking state is exported to CAN circuit
102。
Optionally, the second governor circuit includes the second logical signal processing unit and main control unit；
One end of second logical signal processing unit is connected with one end of second processing circuit, and the process of the second logical signal is single
The other end of unit is connected with one end of main control unit, and the other end of main control unit is connected with one end of CAN circuit 102；
Second logical signal processing unit is used to receive first level signal and second electrical level of second processing circuit output
Signal, according to the first level signal and second electrical level signal, determines the interlocking state of the high voltage component, by interlocking state export to
Main control unit；
Main control unit be used for receive the second logical signal processing unit output interlocking state, by interlocking state export to
CAN circuit 102.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
Embodiment 2
A kind of control method of the high-pressure-loop interlock system of new-energy automobile is embodiments provided, referring to Fig. 2,
The method includes：
Step 201：For each high voltage component in new-energy automobile, the input output of the high voltage component is received
The second loop interlocking signal that the outfan of the first loop interlocking signal and the high voltage component is exported.
Step 202：Respectively by the first loop interlocking signal and the second loop interlocking signal be converted to the first level signal and
Second electrical level signal.
Step 203：According to the first level signal and second electrical level signal, the interlocking state of the high voltage component is determined.
Optionally, according to the first level signal and second electrical level signal, the interlocking state of the high voltage component is determined, including：
Determine whether the first level signal and second electrical level signal are identical, if the first level signal and second electrical level signal
Identical, the interlocking state for determining the high voltage component is closure state；If the first level signal and second electrical level signal are differed,
The interlocking state for determining the high voltage component is off-state.
Optionally, according to the first level signal and second electrical level signal, the interlocking state of the high voltage component is determined, including：
By with non-algorithm, calculate between the first level signal and second electrical level signal with non-result；
If being low level with non-result, the interlocking state for determining the high voltage component is closure state；
If being high level with non-result, the interlocking state for determining the high voltage component is off-state.
Optionally, method also includes：
If the interlocking state of the high voltage component disconnects the output main relay of the high voltage component to disconnect shape, and carries out
Report to the police.
Optionally, method also includes：
The part mark of the high voltage component is obtained, the corresponding relation of part mark and interlocking state is set up.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
Embodiment 3
A kind of high-pressure-loop interlock system of new-energy automobile is embodiments provided, the high-pressure-loop interlock system
Including detection circuit 101 and CAN circuit 102.
The input and outfan of the high voltage component in new-energy automobile is connected respectively with one end of detection circuit 101, examines
The other end of slowdown monitoring circuit 101 is connected with one end of CAN circuit 102, and the other end of CAN circuit 102 is total with the CAN of new-energy automobile
Line is connected.
Detection circuit 101 is used to receive the first loop interlocking signal and the high-voltage section of the input output of the high voltage component
Second loop interlocking signal of the outfan output of part, respectively changes the first loop interlocking signal and the second loop interlocking signal
For the first level signal and second electrical level signal, according to the first level signal and second electrical level signal, the high voltage component is determined
Interlocking state, interlocking state is exported to CAN circuit 102.
Detection circuit 101 determines whether the first level signal and second electrical level signal are identical；If the first level signal and
Second electrical level signal is identical, and the interlocking state for determining the high voltage component is closure state；If the first level signal and second electric
Ordinary mail number is differed, and the interlocking state for determining the high voltage component is off-state.Or,
Detection circuit 101 by with non-algorithm, calculate between the first level signal and second electrical level signal with non-result；
If should be low level with non-result, the interlocking state for determining the high voltage component be closure state；If should be height with non-result
Level, the interlocking state for determining the high voltage component is off-state.
First loop interlocking signal can be the level signal of 12V or the pulse width modulating signal of 12V.Need explanation
It is that the first loop interlocking signal is pulse width modulating signal, and the pulse width modulating signal is square-wave signal, the pulse width
Modulated signal is compared and is with the advantage of high level signal of the prior art or low level signal, by detecting the pulse width
Degree modulated signal voltage and frequency can efficient diagnosis go out the pulse width modulating signal to new-energy automobile ground or high power supply
The situation of short circuit, it is to avoid erroneous judgement abnormal signal causes the situation for detecting circuit 101 interlock function false triggering.
The high voltage component is connected by interlocking terminal with detection circuit 101, whole with new-energy automobile by low pressure plug-in unit
Car control circuit is connected.Namely one end of the interlocking terminal of high voltage component respectively with the input (HVIL_IN) of low pressure plug-in unit and
Detection circuit 101 one end be connected, high voltage component interlocking terminal the other end respectively with the outfan (HVIL_ of low pressure plug-in unit
OUT) it is connected with one end of detection circuit 101.
CAN circuit 102 is used for the interlocking state of the output of receiving test circuit 101, by interlocking state output to CAN.
Full-vehicle control circuit sends the first loop interlocking signal, and the first loop interlocking signal is through low pressure plug-in unit and high-voltage section
The input of the interlocking terminal of part, exports and gives detection circuit 101.
CAN circuit 102 is made up of CAN signal level shifting circuit, the interlocking state that detection circuit 101 is exported, transmission
To CAN.
In embodiments of the present invention, CAN circuit exports the interlocking state of high voltage component to CAN, realizes prison in real time
The purpose of control.
Referring to Fig. 3, the detection circuit 101 includes the first process circuit 1011 and the first governor circuit 1012.
One end of first process circuit 1011 is connected respectively with the input and outfan of the high voltage component, and first processes electricity
The other end on road 1011 is connected with one end of the first governor circuit 1012, the other end and CAN circuit of the first governor circuit 1012
102 one end connection；
First process circuit 1011 is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively by first
Loop interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, are believed according to the first level
Number and second electrical level signal, determine the interlocking state of the high voltage component, interlocking state is exported to the first governor circuit 1012；
First governor circuit 1012 is used to receive the interlocking state of the output of the first process circuit 1011, and interlocking signal is exported
To CAN circuit 102.
Wherein, the first governor circuit 1012 can be main control chip；The main control chip can be by MCU
(Microcontroller Unit, micro-control unit) computing chip is constituted, and the main control chip can also be by DSP (Digital
Signal Processing, Digital Signal Processing) computing chip composition, identification can be monitored to interlocking state, and pass through
CAN interface is exported to CAN.
Referring to Fig. 4, first process circuit 1011 includes the process of the logical signal of interlocking signal processing unit 10111 and first
Unit 10112；
One end of interlocking signal processing unit 10111 is connected respectively with the input and outfan of the high voltage component, interlocking
The other end of signal processing unit 10111 is connected with one end of the first logical signal processing unit 10112, at the first logical signal
The other end of reason unit 10112 is connected with one end of the first governor circuit 1012；
Interlocking signal processing unit 10111 is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively
First loop interlocking signal and the second loop interlocking signal are converted to into the first level signal and second electrical level signal, it is electric by first
Ordinary mail number and second electrical level signal output give the first logical signal processing unit 10112；
First logical signal processing unit 10112 is used to receive first level signal and second of interlocking signal unit output
Level signal, according to the first level signal and second electrical level signal, determines the interlocking state of the high voltage component, and interlocking state is defeated
Go out to the first governor circuit 1012.
Interlocking signal processing unit 10111 includes resistor voltage divider circuit, filter capacitor and operational amplifier；Electric resistance partial pressure electricity
The one end on road is connected respectively with the input and outfan of high voltage component, the other end of resistor voltage divider circuit and the one of filter capacitor
End is connected, and the other end of filter capacitor is connected with one end of operational amplifier, and the other end of operational amplifier and the first logic are believed
One end of number processing unit 10112 is connected.First logical signal processing unit 10112 can be made up of NAND Logic gate circuit.
Referring to Fig. 5, the detection circuit 101 includes the governor circuit 1014 of second processing circuit 1013 and second；
One end of second processing circuit 1013 is connected respectively with the input and outfan of the high voltage component, second processing electricity
The other end on road 1013 is connected with one end of the second governor circuit 1014, the other end and CAN circuit of the second governor circuit 1014
102 one end connection；
Second processing circuit 1013 is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively by first
Loop interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, by the first level signal
The second governor circuit 1014 is given with second electrical level signal output；
Second governor circuit 1014 is used to receive first level signal and second electrical level of the output of second processing circuit 1013
Signal, according to the first level signal and second electrical level signal, determines the interlocking state of the high voltage component, by interlocking state export to
CAN circuit 102.
Second processing circuit 1013 is usually resistance capacitance and constitutes, and cost is extremely low.Second governor circuit 1014 can be with based on
Control chip；The main control chip can be made up of MCU (Microcontroller Unit, micro-control unit) computing chip, the master
Control chip can also be made up of DSP (Digital Signal Processing, Digital Signal Processing) computing chip, can be to mutual
Lock status is monitored identification, and is exported to CAN by CAN interface.
Referring to Fig. 6, the second governor circuit 1014 includes the second logical signal processing unit 10141 and main control unit 10142；
One end of second logical signal processing unit 10141 is connected with one end of second processing circuit 1013, the second logic
The other end of signal processing unit 10141 is connected with one end of main control unit 10142, the other end and CAN of main control unit 10142
One end connection of circuit 102；
Second logical signal processing unit 10141 be used to receiving the first level signal of the output of second processing circuit 1013 and
Second electrical level signal, according to the first level signal and second electrical level signal, determines the interlocking state of the high voltage component, will interlock shape
State is exported to main control unit 10142；
Main control unit 10142 is used to receive the interlocking state of the output of the second logical signal processing unit 10141, will interlock shape
State is exported to CAN circuit 102.
Second logical signal processing unit 10141 can be made up of NAND Logic gate circuit, it is also possible to by main control chip
Reason computing is completed.
In embodiments of the present invention, the second logical signal processing unit 10141 is integrated in the second governor circuit 1014,
Namely second logical signal process circuit can be substituted by governor circuit logical operationss, additional cost is extremely low.
Equally, second processing circuit 1013 is usually resistance capacitance and constitutes, and cost is extremely low.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
Embodiment 4
A kind of control method of the high-pressure-loop interlock system of new-energy automobile is embodiments provided, referring to Fig. 7；
The method includes：
Step 301：For each high voltage component in new-energy automobile, detect that circuit receives the input of the high voltage component
The second loop interlocking signal that first loop interlocking signal of end output and the outfan of the high voltage component are exported.
Step 302：It is electric that first loop interlocking signal and the second loop interlocking signal are converted to first by detection circuit respectively
Ordinary mail number and second electrical level signal.
First loop interlocking signal is converted to the first level signal by detection circuit, and the second loop interlocking signal is converted to
Second electrical level signal.
Step 303：Detection circuit determines the interlocking shape of the high voltage component according to the first level signal and second electrical level signal
State.
This step can be realized by following first kind of way or the second way；For the first implementation, this
Step can be：
Detection circuit determines whether the first level signal and second electrical level signal are identical；If the first level signal and second
Level signal is identical, and the interlocking state for determining the high voltage component is closure state；If the first level signal and second electrical level are believed
Number differ, the interlocking state for determining the high voltage component is off-state.
For second implementation, this step can be：
Detection circuit by with non-algorithm, calculate between the first level signal and second electrical level signal with non-result；Such as
Fruit should be low level with non-result, and the interlocking state for determining the high voltage component is closure state；If should be high electricity with non-result
Flat, the interlocking state for determining the high voltage component is off-state.
Detection circuit exports the interlocking state of the high voltage component to CAN circuit；The output of CAN circuit receiving test circuit
The interlocking state, execution step 304.
Step 304：If the interlocking state of the high voltage component is off-state, CAN circuit disconnects the high voltage component
Output main relay, and reported to the police.
CAN circuit carries out warning can be by sending warning message, playing voice messaging or light trouble light etc..Example
Such as, the process that CAN circuit lights that trouble light reported to the police can be：CAN circuit notifies new by the CAN of new-energy automobile
Energy automobile controller, by new energy vehicle controller the corresponding trouble light of the high voltage component is lighted.So as to driver sees this
When the corresponding trouble light of high voltage component is lit, the high voltage component is overhauled.
Step 305：CAN circuit obtains the part mark of the high voltage component, sets up part mark and the interlocking state
Corresponding relation.
CAN circuit sets up part mark and the corresponding relation of the interlocking state, in order to subsequently enter to the high voltage component
Row quality evaluation.
Further, CAN circuit counts the failure frequency of the high voltage component in the nearest preset duration of current time, root
Reliability assessment is carried out to the high voltage component according to the failure frequency.
When CAN circuit determines that the failure frequency is more than preset times, the poor reliability of the high voltage component is determined；Determine the event
When the barrier frequency is not more than preset times, the highly reliable of the high voltage component is determined.
The part mark of high voltage component can be title of high voltage component etc..Preset duration and preset times can bases
Needs are configured and change, and in embodiments of the present invention, preset duration and preset times are all not especially limited；For example,
Preset duration can be 1 month or 2 months etc.；Preset times can be inferior for 10.
In embodiments of the present invention, for each high voltage component in new-energy automobile, the high voltage component is all connected
One high-pressure-loop interlock system, by the high-pressure-loop interlock system, detects the interlocking state of the high voltage component, mutual according to this
Lock status determines whether the high voltage component breaks down；So as to improve the accuracy whether detection high voltage component breaks down.
It should be noted that：The high-pressure-loop interlock system of the new-energy automobile that above-described embodiment is provided is in new-energy automobile
High-pressure-loop interlock when, be only illustrated with the division of above-mentioned each functional module, in practical application, can be as needed
And above-mentioned functions distribution is completed by different functional modules, will the internal structure of device be divided into different functional modules,
To complete all or part of function described above.In addition, the high-pressure-loop of the new-energy automobile of above-described embodiment offer is mutual
Lock system belongs to same design with the control method embodiment of the high-pressure-loop interlock system of new-energy automobile, and it was implemented
Journey refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that realizing all or part of step of above-described embodiment can pass through hardware
To complete, it is also possible to which the hardware that correlation is instructed by program is completed, and described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read only memory, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. the high-pressure-loop interlock system of a kind of new-energy automobile, it is characterised in that the high-pressure-loop interlock system includes：Inspection
Slowdown monitoring circuit and controller area network circuit；
For each high voltage component in new-energy automobile, the input and outfan of the high voltage component respectively with the inspection
Slowdown monitoring circuit one end be connected, it is described detection circuit the other end be connected with one end of the CAN circuit, the CAN circuit it is another
End is connected with the CAN of the new-energy automobile；
The detection circuit is used to receive the first loop interlocking signal and the high pressure of the input output of the high voltage component
Second loop interlocking signal of the outfan output of part, it is respectively that the first loop interlocking signal and second loop is mutual
Lock signal is converted to the first level signal and second electrical level signal, is believed according to first level signal and the second electrical level
Number, determine the interlocking state of the high voltage component, the interlocking state is exported to the CAN circuit；
The CAN circuit is used to receive the interlocking state of the detection circuit output, by interlocking state output to institute
State CAN.
2. high-pressure-loop interlock system according to claim 1, it is characterised in that the detection circuit includes that first is processed
Circuit and the first governor circuit；
One end of first process circuit is connected respectively with the input and outfan of the high voltage component, and described first is processed
The other end of circuit is connected with one end of first governor circuit, and the other end of first governor circuit is electric with the CAN
One end connection on road；
First process circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively will
The first loop interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, root
According to first level signal and the second electrical level signal, the interlocking state of the high voltage component is determined, by the interlocking shape
State is exported to first governor circuit；
First governor circuit is used to receive the interlocking state of the first process circuit output, by the interlocking signal
Export to the CAN circuit.
3. high-pressure-loop interlock system according to claim 2, it is characterised in that first process circuit includes interlocking
Signal processing unit and the first logical signal processing unit；
One end of the interlocking signal processing unit is connected respectively with the input and outfan of the high voltage component, the interlocking
The other end of signal processing unit is connected with one end of the first logical signal processing unit, and first logical signal is processed
The other end of unit is connected with one end of first governor circuit；
The interlocking signal processing unit is used to receive the first loop interlocking signal and the second loop interlocking signal, point
The first loop interlocking signal and the second loop interlocking signal first level signal and described are not converted to into
Two level signals, process single by first level signal and the second electrical level signal output to first logical signal
Unit；
The first logical signal processing unit be used to receiving first level signal of interlocking signal unit output and
The second electrical level signal, according to first level signal and the second electrical level signal, determines the mutual of the high voltage component
Lock status, the interlocking state is exported to first governor circuit.
4. high-pressure-loop interlock system according to claim 1, it is characterised in that the detection circuit includes second processing
Circuit and the second governor circuit；
One end of the second processing circuit is connected respectively with the input and outfan of the high voltage component, the second processing
The other end of circuit is connected with one end of second governor circuit, and the other end of second governor circuit is electric with the CAN
One end connection on road；
The second processing circuit is used to receive the first loop interlocking signal and the second loop interlocking signal, respectively will
The first loop interlocking signal and the second loop interlocking signal are converted to the first level signal and second electrical level signal, will
First level signal and the second electrical level signal output give second governor circuit；
Second governor circuit is used to receive first level signal and described second of the second processing circuit output
Level signal, according to first level signal and the second electrical level signal, determines the interlocking state of the high voltage component, will
The interlocking state is exported to the CAN circuit.
5. high-pressure-loop interlock system according to claim 4, it is characterised in that second governor circuit includes second
Logical signal processing unit and main control unit；
One end of the second logical signal processing unit is connected with one end of the second processing circuit, the second logic letter
The other end of number processing unit is connected with one end of the main control unit, the other end of the main control unit and the CAN circuit
One end connection；
The second logical signal processing unit be used for receive the second processing circuit output first level signal and
The second electrical level signal, according to first level signal and the second electrical level signal, determines the mutual of the high voltage component
Lock status, the interlocking state is exported to the main control unit；
The main control unit is used to receive the interlocking state of the second logical signal processing unit output, by the interlocking
State- output gives the CAN circuit.
6. the control method of the high-pressure-loop interlock system of a kind of new-energy automobile, it is characterised in that methods described includes：
For each high voltage component in new-energy automobile, the first loop for receiving the input output of the high voltage component is mutual
Second loop interlocking signal of the outfan output of lock signal and the high voltage component；
Respectively the first loop interlocking signal and the second loop interlocking signal are converted to into the first level signal and second
Level signal；
According to first level signal and the second electrical level signal, the interlocking state of the high voltage component is determined.
7. method according to claim 6, it is characterised in that described according to first level signal and described second electric
Ordinary mail number, determines the interlocking state of the high voltage component, including：
Determine whether first level signal and the second electrical level signal are identical, if first level signal and described
Second electrical level signal is identical, and the interlocking state for determining the high voltage component is closure state；If first level signal and
The second electrical level signal is differed, and the interlocking state for determining the high voltage component is off-state.
8. method according to claim 6, it is characterised in that described according to first level signal and described second electric
Ordinary mail number, determines the interlocking state of the high voltage component, including：
By with non-algorithm, calculate between first level signal and the second electrical level signal with non-result；
If described is low level with non-result, the interlocking state for determining the high voltage component is closure state；
If described is high level with non-result, the interlocking state for determining the high voltage component is off-state.
9. method according to claim 6, it is characterised in that methods described also includes：
If the interlocking state of the high voltage component disconnects the output main relay of the high voltage component to disconnect shape, and carries out
Report to the police.
10. method according to claim 6, it is characterised in that methods described also includes：
The part mark of the high voltage component is obtained, the corresponding relation of the part mark and the interlocking state is set up.
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Also Published As
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| CN106564382B (en) | 2019-06-14 |
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