CN107688146A - A kind of contactor condition detection method - Google Patents
A kind of contactor condition detection method Download PDFInfo
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- CN107688146A CN107688146A CN201710632599.4A CN201710632599A CN107688146A CN 107688146 A CN107688146 A CN 107688146A CN 201710632599 A CN201710632599 A CN 201710632599A CN 107688146 A CN107688146 A CN 107688146A
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- contactor
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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
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Abstract
The invention discloses a kind of contactor condition detection method, it is related to technical field of vehicle detection.Contactor condition detection method, the state of contactor is judged for detecting in real time, including：S1, circuit is detected by periphery, detect the loop voltage value V of main negative contactor；S2, judge that the master bears the state of contactor according to the loop voltage value V；S3, by voltage detecting circuit, detect the magnitude of voltage V2 of the magnitude of voltage V1 and the power battery cathode of electrokinetic cell with leading positive contactor positive pole both ends；S4, according to the magnitude of voltage V1 and the magnitude of voltage V2, judge to lead the state of positive contactor and preliminary filling contactor.The present invention is by increasing periphery detection circuit, the state of main negative contactor can be detected in real time without upper electricity, the magnitude of voltage of the positive contactor front and back end of electric circuit inspection master is detected by plurality of voltages, contactor need not be repeatedly opened and closed, detection cycle is reduced, and improves the security of maintenance personal and vehicle.
Description
Technical field
The present invention relates to technical field of vehicle detection, more particularly to a kind of contactor condition detection method.
Background technology
With the attention for the problems such as countries in the world are to global warming, environmental protection, new energy vehicle technology with its low stain,
The advantage of low power consuming is just developed rapidly.Contactor is the key componentses in new energy vehicle power transmission system, and is connect
Tentaculum may stick together failure when switching on and off, and cause whole-control system chaotic and the peace of serious threat maintenance personal
Entirely.
Following point be present in existing contactor detection technique scheme：The state of cathode contact device can just be sentenced when only upper electric
Its disconnected state, real-time are poor；Need to close successively and disconnect each contactor, and need to detect the second terminal voltage and then judgement
Contactor state, it need to repeatedly act contactor and carry out contactor condition adjudgement, the cycle is longer；Adhesion state be present in other contactors
When, positive contact device serious threat vehicle and maintenance personal's safety are closed first.
The content of the invention
It is an object of the present invention to overcome prior art defect, there is provided a kind of shape that can detect main negative contactor in real time
State, judge the contactor condition detection method that the cycle is short and security performance is high.
Especially, the invention provides a kind of contactor condition detection method, the shape of contactor is judged for detecting in real time
State, including：
S1, circuit is detected by periphery, detect the loop voltage value V of main negative contactor；
S2, judge that the master bears the state of contactor according to the loop voltage value V；
S3, by voltage detecting circuit, the magnitude of voltage V1 and the power battery cathode for detecting electrokinetic cell are just connecing with master
The magnitude of voltage V2 at tentaculum positive pole both ends；
S4, according to the magnitude of voltage V1 and the magnitude of voltage V2, judge to lead the state of positive contactor and preliminary filling contactor.
Further, the state of the negative contactor of the master is judged in the S2 includes step：
S21：If the loop voltage value V is equal to the first preset voltage value Vs, it is not viscous to judge that the master bears contactor
Connect and close the master and bear contactor, otherwise into step S22；
S22, judge the master bear contactor stick together failure and by fault information reporting to Full Vehicle System.
Further, after the negative contactor of the master is closed in the S21, the periphery detection circuit is controlled to detect in real time
The loop voltage value V, monitored in real time with bearing contactor to the master.
Further, the first preset voltage value Vs is equal to the supply voltage value in the periphery detection circuit.
Further, the S4 also includes step：
S41, if V1>>V2, then judge that the positive contactor of the master and the preliminary filling contactor do not have adhesion, otherwise, enter
Step S42；
S42, if V1 and V2 difference in the range of the second predeterminated voltage Vm, judges that the preliminary filling contactor and master just connect
Tentaculum sticks together failure, by adhesion fault information reporting to Full Vehicle System.
Further, after the S41 judges that the positive contactor of master and the preliminary filling contactor do not have adhesion, also wrap
Include step：
S411, close preliminary filling contactor；
S412, after preset time, detect the magnitude of voltage V1 and the magnitude of voltage V2；
S413, if the magnitude of voltage V2 is more than or equal to 0.9 times of the magnitude of voltage V2, the preliminary filling contactor is disconnected, is closed
The positive contactor of the master is closed, otherwise, into S414；
S414, preliminary filling is reported not complete fault message to Full Vehicle System.
Further, it is described periphery detection circuit be closed loop circuit, including be sequentially connected in series power supply, first resistor,
Switch and second resistance, and the master being series between the power cathode and the second resistance bear contactor.
Further, the voltage of the power supply is 2.5V.
The contactor condition detection method of the present invention, can be in real time to main negative without upper electricity by increasing periphery detection circuit
The state of contactor is detected.The present invention passes through terminal voltage before and after main positive contactor described in plurality of voltages detection electric circuit inspection
Value, and pass through the state of main positive contactor described in logic judgment, it is not necessary to contactor is repeatedly opened and closed, reduces detection cycle, and
Its state is can determine whether in the state of the positive contactor of the master is not closed, improves the security of maintenance personal and vehicle.
According to the accompanying drawings will be brighter to the detailed description of the specific embodiment of the invention, those skilled in the art
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the flow chart of one embodiment of the invention contactor condition detection method；
Fig. 2 is the detection circuit structure diagram of one embodiment of the invention contactor condition detection method.
Embodiment
Fig. 1 is the flow chart of one embodiment of the invention contactor condition detection method.Fig. 2 is one embodiment of the invention contact
The detection circuit structure diagram of device condition detection method.As shown in figure 1, the invention provides a kind of contactor condition detection method,
The state of contactor is judged for detecting in real time, including：
S1, circuit is detected by periphery, detect the loop voltage value V of main negative contactor 1 (referring to Fig. 2)；
S2, judge that the master bears the state of contactor 1 according to the loop voltage value V；
S3, by voltage detecting circuit, the magnitude of voltage V1 and the electrokinetic cell 9 of detection electrokinetic cell 9 (referring to Fig. 2) are negative
The magnitude of voltage V2 of pole and main positive (referring to Fig. 2) positive pole of contactor 2 both ends；
S4, according to the magnitude of voltage V1 and the magnitude of voltage V2, judge to lead positive contactor 2 and preliminary filling contactor 3 (referring to figure
2) state.
The contactor condition detection method of the present invention, can be in real time to main negative without upper electricity by increasing periphery detection circuit
The state of contactor 1 is detected.The present invention passes through terminal voltage before and after main positive contactor 2 described in plurality of voltages detection electric circuit inspection
Value, and pass through the state of main positive contactor 2 described in logic judgment, it is not necessary to contactor is repeatedly opened and closed, reduces detection cycle, and
Its state is can determine whether in the state of the positive contactor 2 of the master is not closed, improves the security of maintenance personal and vehicle.
In one embodiment, the state of the negative contactor 1 of the master is judged in the S2 includes step：
S21：If the loop voltage value V is equal to the first preset voltage value Vs, judge that the master bears contactor 1 without viscous
Connect and close the master and bear contactor 1, otherwise into step S22；
S22, judge the master bear contactor 1 stick together failure and by fault information reporting to Full Vehicle System.
The present invention increases periphery detection circuit by bearing contactor 1 to the master, detects the loop that the master bears contactor 1
Magnitude of voltage V, individually detection is carried out in real time to main contactor 1 of bearing, by logic judgment, judges the main state for bearing contactor 1,
It need not successively close and disconnect each contactor and just can detect without upper electricity.
Further, the S4 of contactor condition detection method of the invention also includes step：
S41, if V1>>V2, then judge that the positive contactor 2 of the master and the preliminary filling contactor 3 do not have adhesion, otherwise, enter
Enter step S42；
S42, if V1 and V2 difference in the range of the second predeterminated voltage Vm, is judging the preliminary filling contactor 3 and master just
Contactor 2 sticks together failure, by adhesion fault information reporting to Full Vehicle System.
The present invention the state of the main positive contactor 2 of detection and preliminary filling contactor 3 need not detect the main output cathode of detection and
Voltage between main output negative pole, without repeatedly acting the positive contactor 2 of the master and the preliminary filling contactor 3, substantially reduce
The cycle of state-detection.
Further, after the S41 judges that the positive contactor 2 of master and the preliminary filling contactor 3 do not have adhesion, also
Including step：
S411, closure preliminary filling contactor 3；
After closing preliminary filling contactor 3, electric current 4 pairs of external equipments of precharged resistance enter line precharge, can effectively reduce and connect
Peak point current of the tentaculum in closing course, it is possible to increase the service life of equipment.
S412, after preset time, detect the magnitude of voltage V1 and the magnitude of voltage V2；
S413, if the magnitude of voltage V2 is more than or equal to 0.9 times of the magnitude of voltage V2, the preliminary filling contactor 3 is disconnected, is closed
The positive contactor 2 of the master is closed, otherwise, into S414；
S414, preliminary filling is reported not complete fault message to Full Vehicle System.
The step S41 of the present invention is judging the positive contactor 2 of the master and the preliminary filling contactor 3 without the situation of adhesion
It is lower just to enter step S411, avoid when other contactors have adhesion state, the main positive contactor 2 of closure to maintenance personal and
Vehicle damages.
Further, after the present invention closes the negative contactor 1 of the master in the S21, the periphery detection circuit is controlled
The loop voltage value V is detected in real time, in real time by the first preset voltage value Vs compared with loop voltage value V, with to described
Main negative contactor 1 is monitored in real time.
As shown in Fig. 2 it is described periphery detection circuit be closed loop circuit, including be sequentially connected in series power supply 5, first resistor
6th, switch 7 and second resistance 8, and the master being series between the power cathode and the second resistance bear contactor 1.
The closed loop periphery detection circuit can detect the state of main negative contactor 1 in real time.The method base of above-mentioned contactor state-detection
In detection circuit as described in Figure 2, including the positive contactor 2 of master, electrokinetic cell 9 and the main negative contactor 1 being sequentially connected, wherein,
Preliminary filling contactor 3 and preliminary filling resistance 4 are connected in parallel with main positive contactor 2, and voltage detecting circuit is correspondingly arranged at the master respectively
The positive front and back end of contactor 2, for detecting the magnitude of voltage V1 and the magnitude of voltage V2.Further, the first preset voltage value Vs
Equal to the supply voltage value in the periphery detection circuit, the voltage of the power supply 5 is 2.5V.
Main negative contactor 1 is needed just to may determine that its state when upper electric to existing detection technique, real-time poor,
The present invention is born in the master and detection circuit in periphery is added at contactor 1, and the state for bearing contactor 1 to the master in real time is examined
Survey, it is not necessary to which closure disconnects each contactor successively, just detectable without upper electricity.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (8)
1. a kind of contactor condition detection method, the state of contactor is judged for detecting in real time, including：
S1, circuit is detected by periphery, detect the loop voltage value V of main negative contactor；
S2, judge that the master bears the state of contactor according to the loop voltage value V；
S3, by voltage detecting circuit, detect the magnitude of voltage V1 and the power battery cathode and main positive contactor of electrokinetic cell
The magnitude of voltage V2 at positive pole both ends；
S4, according to the magnitude of voltage V1 and the magnitude of voltage V2, judge to lead the state of positive contactor and preliminary filling contactor.
2. contactor condition detection method according to claim 1, it is characterised in that judge that the master is negative in the S2 and connect
The state of tentaculum includes step：
S21：If the loop voltage value V is equal to the first preset voltage value Vs, judge that the master bears contactor and do not have adhesion simultaneously
Close the master and bear contactor, otherwise into step S22；
S22, judge the master bear contactor stick together failure and by fault information reporting to Full Vehicle System.
3. contactor condition detection method according to claim 2, it is characterised in that the master is closed in the S21
After negative contactor, control the periphery detection circuit to detect the loop voltage value V in real time, carried out with bearing contactor to the master
Monitoring in real time.
4. contactor condition detection method according to claim 2, it is characterised in that described first preset voltage value Vs etc.
Supply voltage value in the periphery detection circuit.
5. the contactor condition detection method according to any one of claim 1-4, it is characterised in that the S4 also includes
Step：
S41, if V1>>V2, then judge that the positive contactor of the master and the preliminary filling contactor do not have adhesion, otherwise, into step
S42；
S42, if V1 and V2 difference in the range of the second predeterminated voltage Vm, judges the preliminary filling contactor and main positive contactor
Stick together failure, by adhesion fault information reporting to Full Vehicle System.
6. contactor condition detection method according to claim 5, it is characterised in that judging the master just in the S41
After contactor and the preliminary filling contactor do not have adhesion, in addition to step：
S411, close preliminary filling contactor；
S412, after preset time, detect the magnitude of voltage V1 and the magnitude of voltage V2；
S413, if the magnitude of voltage V2 is more than or equal to 0.9 times of the magnitude of voltage V2, the preliminary filling contactor is disconnected, closes institute
Main positive contactor is stated, otherwise, into S414；
S414, preliminary filling is reported not complete fault message to Full Vehicle System.
7. the contactor condition detection method according to any one of claim 1-6, it is characterised in that the periphery detection
Circuit is closed loop circuit, including power supply, first resistor, switch and the second resistance being sequentially connected in series, and is series at described
The master between power cathode and the second resistance bears contactor.
8. contactor condition detection method according to claim 7, it is characterised in that the voltage of the power supply is 2.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710632599.4A CN107688146A (en) | 2017-07-28 | 2017-07-28 | A kind of contactor condition detection method |
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| CN201710632599.4A CN107688146A (en) | 2017-07-28 | 2017-07-28 | A kind of contactor condition detection method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579713A (en) * | 2018-05-21 | 2019-12-17 | 郑州深澜动力科技有限公司 | Electric vehicle and state monitoring device of power battery and contactor thereof |
| CN111077440A (en) * | 2018-10-19 | 2020-04-28 | 株洲中车时代电气股份有限公司 | Traction converter and method, device and equipment for detecting state of contactor of traction converter |
| CN112255577A (en) * | 2019-10-30 | 2021-01-22 | 蜂巢能源科技有限公司 | Method and system for detecting contactor adhesion |
| CN112305415A (en) * | 2020-12-21 | 2021-02-02 | 华人运通(江苏)技术有限公司 | Method and system for monitoring service life of high-voltage contactor in real time |
| CN112389200A (en) * | 2019-07-31 | 2021-02-23 | 比亚迪股份有限公司 | Detection circuit and method for contactor sintering and vehicle |
| CN113500939A (en) * | 2021-07-05 | 2021-10-15 | 华人运通(江苏)技术有限公司 | Method, device and equipment for monitoring state of charging contactor of vehicle |
| CN113866645A (en) * | 2021-09-07 | 2021-12-31 | 上海德朗能电子科技有限公司 | Rechargeable battery, fault detection method and device of contactor, and storage medium |
| CN116609665A (en) * | 2023-06-01 | 2023-08-18 | 沃尔特电子（苏州）有限公司 | Contactor adhesion detection method |
| CN117630651A (en) * | 2022-08-19 | 2024-03-01 | 比亚迪股份有限公司 | Contactor state determining method and device, battery management system and vehicle |
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| CN111077440A (en) * | 2018-10-19 | 2020-04-28 | 株洲中车时代电气股份有限公司 | Traction converter and method, device and equipment for detecting state of contactor of traction converter |
| CN112389200A (en) * | 2019-07-31 | 2021-02-23 | 比亚迪股份有限公司 | Detection circuit and method for contactor sintering and vehicle |
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| CN112305415A (en) * | 2020-12-21 | 2021-02-02 | 华人运通(江苏)技术有限公司 | Method and system for monitoring service life of high-voltage contactor in real time |
| CN113500939A (en) * | 2021-07-05 | 2021-10-15 | 华人运通(江苏)技术有限公司 | Method, device and equipment for monitoring state of charging contactor of vehicle |
| CN113500939B (en) * | 2021-07-05 | 2022-12-27 | 华人运通(江苏)技术有限公司 | Method, device and equipment for monitoring state of charging contactor of vehicle |
| CN113866645A (en) * | 2021-09-07 | 2021-12-31 | 上海德朗能电子科技有限公司 | Rechargeable battery, fault detection method and device of contactor, and storage medium |
| CN117630651A (en) * | 2022-08-19 | 2024-03-01 | 比亚迪股份有限公司 | Contactor state determining method and device, battery management system and vehicle |
| CN117630651B (en) * | 2022-08-19 | 2024-10-11 | 比亚迪股份有限公司 | Contactor state determining method and device, battery management system and vehicle |
| CN116609665A (en) * | 2023-06-01 | 2023-08-18 | 沃尔特电子（苏州）有限公司 | Contactor adhesion detection method |
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