CN107867183A - A kind of high voltage power distributing cabinet contactor break-make judgment means and control method - Google Patents
A kind of high voltage power distributing cabinet contactor break-make judgment means and control method Download PDFInfo
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- CN107867183A CN107867183A CN201711004082.7A CN201711004082A CN107867183A CN 107867183 A CN107867183 A CN 107867183A CN 201711004082 A CN201711004082 A CN 201711004082A CN 107867183 A CN107867183 A CN 107867183A
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- contactor
- voltage
- controller
- power distributing
- distributing cabinet
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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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of high voltage power distributing cabinet contactor break-make judgment means and control method, belongs to electric vehicle engineering field, including first voltage sensor, second voltage sensor and controller；The input of first voltage sensor is connected with contactor front end, output end and controller input connect, and the input of second voltage sensor is connected with contactor rear end, output end and controller input connect；The signal acquisition terminal of controller and the contact point of contactor are connected, and the closure control terminal of controller is connected with contactor coil.The present invention can accurately sentence the on off operating mode of contactor by gathering the magnitude of voltage of high voltage power distributing cabinet contactor front-end and back-end, and can be diagnosed to be whether contactor has loosening or failure risk, ensure the safe for operation of vehicle.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of high voltage power distributing cabinet contactor break-make judgment means and
Control method.
Background technology
At present, the break-make of new-energy automobile high voltage power distributing cabinet contactor can only judge to contact substantially by closed feedback signal
The on off operating mode of device, the method is that the closure of auxiliary contact is driven by the main contacts of contactor, and the long-time of contactor is mechanical
Action will cause closed feedback signal acquisition not firm.And whether contactor has loosening or failure risk will when vehicle is run
It can not judge, the safe for operation of vehicle cannot ensure.
The content of the invention
It is an object of the invention to provide a kind of high voltage power distributing cabinet contactor break-make judgment means and control method, to improve
The degree of accuracy that contactor on off operating mode judges.
To realize object above, in a first aspect, the present invention provides a kind of high voltage power distributing cabinet contactor break-make judgment means, bag
Include：
First voltage sensor, second voltage sensor and controller；Before the input and contactor of first voltage sensor
End connection, output end and controller input are connected, and the input of second voltage sensor is connected with contactor rear end, output end
It is connected with controller input；The signal acquisition terminal of controller and the contact point of contactor connect, the closure control terminal of controller
It is connected with contactor coil.
Second aspect, the present invention provide a kind of control method of high voltage power distributing cabinet contactor break-make judgment means, including：
Controller gathers the voltage U1 of contactor front end by first voltage sensor, is gathered and contacted by second voltage sensor
The voltage U2 of device rear end, and the closed feedback signal by signal acquisition terminal collection contactor；
Controller judges whether contactor closes according to the closed feedback signal of voltage U1, U2 and contactor；
When contactor needs closure, it is electric that controller obtains the coil of contactor by closing control terminal output voltage, and control connects
The main contacts of tentaculum, auxiliary contact closure；
After contactor main contacts, auxiliary contact closure, controller gathers closed feedback signal, voltage U1 and the voltage of contactor
U2 and the on off operating mode for judging contactor.
Wherein, it is described after contactor main contacts, auxiliary contact closure, the closed feedback letter of controller collection contactor
Number, voltage U1 and voltage U2 and the on off operating mode for judging contactor, including：
A, after contactor main contacts, auxiliary contact closure, whether controller gathers the closed feedback signal of contactor, if then
Step b is performed, if otherwise performing step d；
B, judge whether the voltage U1, voltage U2 and the magnitude of voltage that battery management system is sent are equal, if then performing step
C, if otherwise performing step d；
C, determine that contactor closes；
D, determine that contactor is not closed.
Wherein, methods described also includes：
In vehicle operationally, judge whether contactor has loosening or failure risk according to voltage U1 and voltage U2 change.
Compared with prior art, there is following technique effect in the present invention：The present invention is by gathering high voltage power distributing cabinet contactor
The magnitude of voltage of front-end and back-end can accurately sentence the on off operating mode of contactor, and can be diagnosed to be whether contactor has pine
Dynamic or failure risk, ensures the safe for operation of vehicle.
Brief description of the drawings
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail：
Fig. 1 is a kind of structural representation of high voltage power distributing cabinet contactor break-make judgment means in the present invention；
Fig. 2 is a kind of schematic flow sheet of the control method of high voltage power distributing cabinet contactor break-make judgment means in the present invention.
Embodiment
In order to illustrate further the feature of the present invention, please refer to the following detailed descriptions related to the present invention and accompanying drawing.Institute
Accompanying drawing is only for reference and purposes of discussion, is not used for being any limitation as protection scope of the present invention.
As shown in figure 1, present embodiment discloses a kind of high voltage power distributing cabinet contactor break-make judgment means, including：
First voltage sensor 10, second voltage sensor 20 and controller 30；The input of first voltage sensor 10 with
The connection of the front end of contactor 40, output end and the input of controller 30 connect, the input and contactor of second voltage sensor 20
The connection of 40 rear ends, output end and the input of controller 30 connect；The signal acquisition terminal of controller 30 and the contact point of contactor 40
Connection, the closure control terminal of controller 30 are connected with the coil of contactor 40.
As shown in Fig. 2 present embodiment discloses a kind of control method of high voltage power distributing cabinet contactor break-make judgment means, bag
Include following steps S1 to S4：
S1, controller 30 gather the voltage U1 of the front end of contactor 40 by first voltage sensor 10, are sensed by second voltage
Device 20 gathers the voltage U2 of the rear end of contactor 40, and the closed feedback signal of contactor 40 is gathered by signal acquisition terminal；
S2, controller 30 judge whether contactor 40 closes according to the closed feedback signal of voltage U1, U2 and contactor 40；
S3, contactor 40 need closure when, controller 30 obtains the coil of contactor 40 by closing control terminal output voltage
Electricity, the main contacts of control contactor 40, auxiliary contact closure；
S4, the main contacts of contactor 40, auxiliary contact closure after, controller 30 gather contactor 40 closed feedback signal, electricity
Press U1 and voltage U2 and the on off operating mode for judging contactor 40.
It should be noted that controller 30 gathers the voltage of the front-end and back-end of contactor 40 by voltage sensor in real time
The magnitude of voltage of electrokinetic cell is sent to controller 30 by value, battery management unit, and controller 30 is by the magnitude of voltage and power of collection
The magnitude of voltage of battery is compared, if the closed feedback signal of contactor 40 and the magnitude of voltage of collection are inconsistent in logic, is belonged to
In malfunction, the switching state of contactor 40 is judged according to this.
Further, step S4, specifically comprise the following steps：
A, after the main contacts of contactor 40, auxiliary contact closure, whether controller 30 gathers the closed feedback signal of contactor 40,
If then performing step b, if otherwise performing step d；
B, judge whether the voltage U1, voltage U2 and the magnitude of voltage that battery management system is sent are equal, if then performing step
C, if otherwise performing step d；
C, determine that contactor 40 closes；
D, determine that contactor 40 is not closed.
Further, method disclosed in the present embodiment also includes：
It should be noted that, judge whether contactor 40 has pine according to voltage U1 and voltage U2 change in vehicle operationally
Dynamic or failure risk.The present invention can accurately be sentenced by gathering the magnitude of voltage of the front-end and back-end of high voltage power distributing cabinet contactor 40
Locate the on off operating mode of contactor 40, and can be diagnosed to be whether contactor 40 has loosening or failure risk, be specially：If the
The voltage U1 numerical value that one voltage sensor collects contactor front end keeps stable, and second voltage sensor collects contactor
The voltage U2 of rear end numerical value has the phenomenon of saltus step, then illustrates that contactor has loosening risk.If the closure for collecting contactor is anti-
Feedback signal and magnitude of voltage U1, U2 are inconsistent in logic, then illustrate the faulty risk of contactor.
The present embodiment can accurately sentence contact by gathering the magnitude of voltage of high voltage power distributing cabinet contactor front-end and back-end
The on off operating mode of device, and can be diagnosed to be whether contactor has loosening or failure risk, ensure the safe for operation of vehicle.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (4)
1. a kind of high voltage power distributing cabinet contactor break-make judgment means, it is characterised in that including first voltage sensor, second voltage
Sensor and controller；The input of first voltage sensor is connected with contactor front end, output end and controller input
Connection, the input of second voltage sensor is connected with contactor rear end, output end and controller input connect；Controller
The contact point of signal acquisition terminal and contactor is connected, and the closure control terminal of controller is connected with contactor coil.
A kind of 2. control method of high voltage power distributing cabinet contactor break-make judgment means as claimed in claim 1, it is characterised in that
Including：
Controller gathers the voltage U1 of contactor front end by first voltage sensor, is gathered and contacted by second voltage sensor
The voltage U2 of device rear end, and the closed feedback signal by signal acquisition terminal collection contactor；
Controller judges whether contactor closes according to the closed feedback signal of voltage U1, U2 and contactor；
When contactor needs closure, it is electric that controller obtains the coil of contactor by closing control terminal output voltage, and control connects
The main contacts of tentaculum, auxiliary contact closure；
After contactor main contacts, auxiliary contact closure, controller gathers closed feedback signal, voltage U1 and the voltage of contactor
U2 and the on off operating mode for judging contactor.
3. the control method of high voltage power distributing cabinet contactor break-make judgment means as claimed in claim 2, it is characterised in that described
After contactor main contacts, auxiliary contact closure, closed feedback signal, voltage U1 and the voltage U2 of controller collection contactor are simultaneously
Judge the on off operating mode of contactor, including：
A, after contactor main contacts, auxiliary contact closure, whether controller collects the closed feedback signal of contactor, if
Step b is then performed, if otherwise performing step d；
B, judge whether the voltage U1, voltage U2 and the magnitude of voltage that battery management system is sent are equal, if then performing step
C, if otherwise performing step d；
C, determine that contactor closes；
D, determine that contactor is not closed.
4. the control method of high voltage power distributing cabinet contactor break-make judgment means as claimed in claim 2, it is characterised in that also wrap
Include：
In vehicle operationally, judge whether contactor has loosening or failure risk according to voltage U1 and voltage U2 change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711004082.7A CN107867183A (en) | 2017-10-24 | 2017-10-24 | A kind of high voltage power distributing cabinet contactor break-make judgment means and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711004082.7A CN107867183A (en) | 2017-10-24 | 2017-10-24 | A kind of high voltage power distributing cabinet contactor break-make judgment means and control method |
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| Publication Number | Publication Date |
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| CN107867183A true CN107867183A (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711004082.7A Pending CN107867183A (en) | 2017-10-24 | 2017-10-24 | A kind of high voltage power distributing cabinet contactor break-make judgment means and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490768A (en) * | 2018-11-12 | 2019-03-19 | 北京长城华冠汽车科技股份有限公司 | The redundance judging method and system of contacts of contactor adhesion |
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| JPH0678401A (en) * | 1992-08-24 | 1994-03-18 | Toyota Autom Loom Works Ltd | Circuit for protecting transistor of running control device in electric motor vehicle |
| CN102890237A (en) * | 2012-09-27 | 2013-01-23 | 潍柴动力股份有限公司 | Method and device for detecting faults of main touch point of high-voltage direct-current contact |
| CN202837494U (en) * | 2012-07-31 | 2013-03-27 | 上海奥鑫能源科技有限公司 | Contactor state inspection device |
| CN103926854A (en) * | 2014-04-22 | 2014-07-16 | 湖南南车时代电动汽车股份有限公司 | Contactor control method and contactor combination circuit control method |
| CN106627156A (en) * | 2016-11-06 | 2017-05-10 | 北京理工华创电动车技术有限公司 | High-voltage information acquisition controller |
| CN106872890A (en) * | 2017-03-24 | 2017-06-20 | 北京长城华冠汽车科技股份有限公司 | High voltage connector state diagnostic apparatus |
| CN207416555U (en) * | 2017-10-24 | 2018-05-29 | 合肥禄正新能源科技有限公司 | A kind of high voltage power distributing cabinet contactor break-make judgment means |
-
2017
- 2017-10-24 CN CN201711004082.7A patent/CN107867183A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678401A (en) * | 1992-08-24 | 1994-03-18 | Toyota Autom Loom Works Ltd | Circuit for protecting transistor of running control device in electric motor vehicle |
| CN202837494U (en) * | 2012-07-31 | 2013-03-27 | 上海奥鑫能源科技有限公司 | Contactor state inspection device |
| CN102890237A (en) * | 2012-09-27 | 2013-01-23 | 潍柴动力股份有限公司 | Method and device for detecting faults of main touch point of high-voltage direct-current contact |
| CN103926854A (en) * | 2014-04-22 | 2014-07-16 | 湖南南车时代电动汽车股份有限公司 | Contactor control method and contactor combination circuit control method |
| CN106627156A (en) * | 2016-11-06 | 2017-05-10 | 北京理工华创电动车技术有限公司 | High-voltage information acquisition controller |
| CN106872890A (en) * | 2017-03-24 | 2017-06-20 | 北京长城华冠汽车科技股份有限公司 | High voltage connector state diagnostic apparatus |
| CN207416555U (en) * | 2017-10-24 | 2018-05-29 | 合肥禄正新能源科技有限公司 | A kind of high voltage power distributing cabinet contactor break-make judgment means |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490768A (en) * | 2018-11-12 | 2019-03-19 | 北京长城华冠汽车科技股份有限公司 | The redundance judging method and system of contacts of contactor adhesion |
| CN109490768B (en) * | 2018-11-12 | 2021-01-26 | 北京长城华冠汽车科技股份有限公司 | Redundancy judgment method and system for contactor contact adhesion |
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