CN105655974A - Cover opening protection control method of electric automobile motor controller - Google Patents
Cover opening protection control method of electric automobile motor controller Download PDFInfo
- Publication number
- CN105655974A CN105655974A CN201610105388.0A CN201610105388A CN105655974A CN 105655974 A CN105655974 A CN 105655974A CN 201610105388 A CN201610105388 A CN 201610105388A CN 105655974 A CN105655974 A CN 105655974A
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- CN
- China
- Prior art keywords
- rhizoma nelumbinis
- electric machine
- isolating chip
- machine controller
- chip
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a cover opening protection control method of an electric automobile motor controller. The method comprises the steps that an A/D interface of a main control chip receives a cover opening detection signal input by a cover opening protection detection circuit; the main control chip judges whether the cover opening detection signal is a high level or a low level; whether the main control chip outputs a driving signal to control an active discharging driving circuit to execute busbar discharging or not is determined through high level or low level judgment. According to the cover opening protection method of the motor controller, by means of the first optical coupler isolation chip, the on-off state of a current circuit is judged out accurately, whether the cover opening action of the motor controller is conducted or not is recognized, the active discharging driving circuit isolates a busbar from a control circuit through a second optical coupler isolation chip, and the safety of maintenance personnel is guaranteed.
Description
Technical field
The invention belongs to electric machine controller and motor safety systems technology field, particularly relate to a kind of electric vehicle motor controller and uncap protection control method.
Background technology
Becoming under the background of the mainstream of the times at low-carbon economy, electric automobile becomes the Main way of current development of automobile. Along with constantly advancing of electric automobile, powerful electric machine controller is come out one after another, the electric machine controller input that current new-energy automobile uses is high input voltage system, and motor controller system normal operation, busbar voltage will be made to must be maintained in certain limit; If busbar voltage is too high, beyond the voltage endurance capability of IGBG ((InsulatedGateBipolarTransistor insulate three bipolar-type power pipes), IGBT will be damaged; If busbar voltage is too low, MOSFET pipe can exit saturation region and enter amplification region, and MOSFET pipe caloric value increases and causes cause thermal damage, and currently used busbar voltage master will be typically higher than 300V.
High input voltage system is when maintenance and irregular operation; high direct voltage is very big to the injury of human body; even threat to life; in order to prevent the injury to human body of high pressure that maloperation causes; a set of protection system of uncapping need to be designed, when namely needing the cover plate opening electric machine controller, it is possible to be quickly down within the scope of safe voltage by busbar voltage; to prevent the generation got an electric shock, reach the effect of protection personnel and device.
Summary of the invention
It is an object of the invention to provide a kind of electric vehicle motor controller to uncap protection control method, discharged in time with the bus realized when electric machine controller is uncapped by this control method, the safety of protection maintainer.
The present invention is achieved by the following technical solutions:
A kind of electric vehicle motor controller is uncapped protection control method, and the A/D interface of main control chip is uncapped the testing signal of uncapping of protection testing circuit input;
Described main control chip judges that described testing signal of uncapping is high level or low level;
If described testing signal of uncapping is high level, it is judged that operation of not uncapping for electric machine controller; Motor controller system normal operation;
If described testing signal of uncapping is low level, it is judged that uncap operation for electric machine controller; Described main control chip output drive signal, described driving signal inputs to the control end of active discharge drive circuit, described active discharge drive circuit perform bus discharge.
Described uncapping is protected in testing circuit, when described electric machine controller is not uncapped, the first door trip being arranged on electric machine controller cover plate is connected with the second door trip being arranged on described electric machine controller box body, now, voltage signal between described electric machine controller cover plate and described electric machine controller box body is by after the first smooth Rhizoma Nelumbinis isolating chip conversion, and described first smooth Rhizoma Nelumbinis isolating chip is with high level output testing signal of uncapping;
After described electric machine controller is uncapped, described first door trip disconnects with described second door trip, now, voltage signal between described electric machine controller cover plate and described electric machine controller box body is not by described first smooth Rhizoma Nelumbinis isolating chip conversion, and described first smooth Rhizoma Nelumbinis isolating chip is with low level output testing signal of uncapping.
Described protection testing circuit of uncapping includes the first smooth Rhizoma Nelumbinis isolating chip, the first door trip, the second door trip; Described first door trip is arranged on the cover plate of described electric machine controller; First wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with positive source, and described first door trip is connected with the second wiring pin of described first smooth Rhizoma Nelumbinis isolating chip;
Described second door trip is arranged in described electric machine controller, and described second door trip is connected with described first door trip and power cathode respectively;
3rd wiring pin ground connection of described first smooth Rhizoma Nelumbinis isolating chip; 4th wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with the A/D interface of described main control chip.
In described active discharge drive circuit, after receiving described driving signal, described driving signal drives the second smooth Rhizoma Nelumbinis isolating chip conducting, and supply voltage is by the grid of described second smooth Rhizoma Nelumbinis isolating chip conducting metal-oxide-semiconductor, the bus discharge being connected with described metal-oxide-semiconductor source electrode.
Described active discharge drive circuit includes the second smooth Rhizoma Nelumbinis isolating chip, power supply, metal-oxide-semiconductor, relay; The power supply that controls of described electric machine controller is connected with the first wiring pin of described second smooth Rhizoma Nelumbinis isolating chip; Second wiring pin of described second smooth Rhizoma Nelumbinis isolating chip is connected with described driving signal; 3rd wiring pin of described second smooth Rhizoma Nelumbinis isolating chip is connected with the grid of described metal-oxide-semiconductor; Described power supply is connected with the 4th wiring pin of described second smooth Rhizoma Nelumbinis isolating chip;
The source electrode of described metal-oxide-semiconductor is connected with the negative pole of described relay; The emitter-base bandgap grading of described metal-oxide-semiconductor and the equal ground connection of positive pole of described relay.
It is provided with resistance between the 3rd wiring pin and the grid of described metal-oxide-semiconductor of described second smooth Rhizoma Nelumbinis isolating chip.
It is provided with isolating diode between the positive pole and the negative pole of described relay of described relay.
The invention has the beneficial effects as follows:
The electric machine controller of the present invention is uncapped guard method; by the first smooth Rhizoma Nelumbinis isolating chip; it is accurately judged to the on off operating mode of current circuit; recognise that carrying out electric machine controller uncaps action; and to active discharge drive circuit by the second smooth Rhizoma Nelumbinis isolating chip; by bus and control circuit isolation, the safety of protection maintainer.
Accompanying drawing explanation
Fig. 1 be electric machine controller of the present invention uncap protection control logic chart;
Fig. 2 be the present invention uncap protection testing circuit schematic diagram;
Fig. 3 is active discharge driving circuit principle figure of the present invention.
Detailed description of the invention
Describing technical scheme by the following examples in detail, below example is merely illustrative of, and is only capable of for explaining and illustrate technical scheme, and is not to be construed as the restriction to technical solution of the present invention.
The present invention provides a kind of electric vehicle motor controller to uncap protection control method; design protection testing circuit of uncapping; by the level change of the testing signal of uncapping of protection testing circuit of uncapping, main control chip judge whether to drive active discharge drive circuit works.
Protect testing circuit to include the first smooth Rhizoma Nelumbinis isolating chip, the first door trip, the second door trip as in figure 2 it is shown, uncap; First door trip is arranged on the cover plate of described electric machine controller;First wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with 12V positive source, and described first door trip is connected with the second wiring pin of described first smooth Rhizoma Nelumbinis isolating chip; It is additionally provided with filter circuit between the first wiring pin of the smooth Rhizoma Nelumbinis isolating chip of positive source and first.
Described second door trip is arranged in described electric machine controller, and described second door trip is connected with described first door trip and 12V power cathode respectively.
3rd wiring pin ground connection of described first smooth Rhizoma Nelumbinis isolating chip; It is additionally provided with pull down resistor between the 3rd wiring pin and the ground connection of the first smooth Rhizoma Nelumbinis isolating chip; 4th wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with the A/D interface of described main control chip.
Described uncapping is protected in testing circuit; when described electric machine controller is not uncapped; the first door trip being arranged on electric machine controller cover plate is connected with the second door trip being arranged on described electric machine controller box body; LED operation in first smooth Rhizoma Nelumbinis isolating chip; now; voltage signal between described electric machine controller cover plate and described electric machine controller box body by first smooth Rhizoma Nelumbinis isolating chip conversion after, described first smooth Rhizoma Nelumbinis isolating chip with high level output testing signal of uncapping to Master control chip.
After described electric machine controller is uncapped, described first door trip disconnects with described second door trip, light emitting diode in first smooth Rhizoma Nelumbinis isolating chip does not work, now, voltage signal between described electric machine controller cover plate and described electric machine controller box body is not by described first smooth Rhizoma Nelumbinis isolating chip conversion, described first smooth Rhizoma Nelumbinis isolating chip is with low level output testing signal of uncapping to main control chip, and the voltage of output is not higher than the control running voltage 3.3V of electric machine controller.
The testing signal of uncapping of protection testing circuit input as it is shown in figure 1, the A/D interface of main control chip is uncapped; Main control chip passes through internal judgment; Described main control chip judges that described testing signal of uncapping is high level or low level.
If described testing signal of uncapping is high level, it is judged that operation of not uncapping for electric machine controller; Motor controller system normal operation.
If described testing signal of uncapping is low level, it is judged that uncap operation for electric machine controller; Described main control chip passes through port output module output drive signal, and described driving signal inputs to the control end of active discharge drive circuit, described active discharge drive circuit perform bus discharge.
As it is shown on figure 3, described active discharge drive circuit includes the second smooth Rhizoma Nelumbinis isolating chip, power supply, metal-oxide-semiconductor, relay; The 3.3V of described electric machine controller controls power supply and is connected with the first wiring pin of described second smooth Rhizoma Nelumbinis isolating chip; The described driving signal that second wiring pin of described second smooth Rhizoma Nelumbinis isolating chip exports with the output module of main control chip is connected; 3rd wiring pin of described second smooth Rhizoma Nelumbinis isolating chip is connected with the grid of described metal-oxide-semiconductor by resistance; 12V power supply is connected with the 4th wiring pin of described second smooth Rhizoma Nelumbinis isolating chip.
The source electrode of described metal-oxide-semiconductor is connected with the negative pole of described relay; The emitter-base bandgap grading of described metal-oxide-semiconductor and the equal ground connection of positive pole of described relay.
It is provided with isolating diode, to prevent from electrically connecting between the positive pole of relay and negative pole between the positive pole and the negative pole of described relay of described relay.
In described active discharge drive circuit, after receiving described driving signal, described driving signal drives the second smooth Rhizoma Nelumbinis isolating chip conducting, and 12V supply voltage is by the grid of described second smooth Rhizoma Nelumbinis isolating chip conducting metal-oxide-semiconductor, the bus discharge being connected with described metal-oxide-semiconductor source electrode.
In this application, the pressure ceiling voltage controlling work requiring more than electric machine controller of relay, active discharge drive circuit is connected, start working, according to functional safety demand, active discharge requires to be reduced in the safe voltage of below 60V by busbar voltage within 5 seconds, in the present embodiment, calculating according to T=RC, the discharge resistance of active discharge drive circuit selects 4.7K, in the other embodiments of the application, discharge resistance by calculating selection, has no effect on the enforcement of technical scheme according to actual needs.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency.
Claims (7)
1. an electric vehicle motor controller is uncapped protection control method, it is characterised in that: the A/D interface of main control chip is uncapped the testing signal of uncapping of protection testing circuit input;
Described main control chip judges that described testing signal of uncapping is high level or low level;
If described testing signal of uncapping is high level, it is judged that operation of not uncapping for electric machine controller; Motor controller system normal operation;
If described testing signal of uncapping is low level, it is judged that uncap operation for electric machine controller; Described main control chip output drive signal, described driving signal inputs to the control end of active discharge drive circuit, described active discharge drive circuit perform bus discharge.
2. electric vehicle motor controller according to claim 1 is uncapped protection control method, it is characterized in that: described in uncap protection testing circuit in, when described electric machine controller is not uncapped, the first door trip being arranged on electric machine controller cover plate is connected with the second door trip being arranged on described electric machine controller box body, now, voltage signal between described electric machine controller cover plate and described electric machine controller box body is by after the first smooth Rhizoma Nelumbinis isolating chip conversion, and described first smooth Rhizoma Nelumbinis isolating chip is with high level output testing signal of uncapping;
After described electric machine controller is uncapped, described first door trip disconnects with described second door trip, now, voltage signal between described electric machine controller cover plate and described electric machine controller box body is not by described first smooth Rhizoma Nelumbinis isolating chip conversion, and described first smooth Rhizoma Nelumbinis isolating chip is with low level output testing signal of uncapping.
3. electric vehicle motor controller according to claim 2 is uncapped protection control method, it is characterised in that: described in protection testing circuit of uncapping include the first smooth Rhizoma Nelumbinis isolating chip, the first door trip, the second door trip; Described first door trip is arranged on the cover plate of described electric machine controller; First wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with positive source, and described first door trip is connected with the second wiring pin of described first smooth Rhizoma Nelumbinis isolating chip;
Described second door trip is arranged in described electric machine controller, and described second door trip is connected with described first door trip and power cathode respectively;
3rd wiring pin ground connection of described first smooth Rhizoma Nelumbinis isolating chip; 4th wiring pin of described first smooth Rhizoma Nelumbinis isolating chip is connected with the A/D interface of described main control chip.
4. electric vehicle motor controller according to claim 1 is uncapped protection control method; it is characterized in that: in described active discharge drive circuit; after receiving described driving signal; described driving signal drives the second smooth Rhizoma Nelumbinis isolating chip conducting; supply voltage is by the grid of described second smooth Rhizoma Nelumbinis isolating chip conducting metal-oxide-semiconductor, the bus discharge being connected with described metal-oxide-semiconductor source electrode.
5. electric vehicle motor controller according to claim 2 is uncapped protection control method, it is characterised in that: described active discharge drive circuit includes the second smooth Rhizoma Nelumbinis isolating chip, power supply, metal-oxide-semiconductor, relay; The power supply that controls of described electric machine controller is connected with the first wiring pin of described second smooth Rhizoma Nelumbinis isolating chip; Second wiring pin of described second smooth Rhizoma Nelumbinis isolating chip is connected with described driving signal; 3rd wiring pin of described second smooth Rhizoma Nelumbinis isolating chip is connected with the grid of described metal-oxide-semiconductor; Described power supply is connected with the 4th wiring pin of described second smooth Rhizoma Nelumbinis isolating chip;
The source electrode of described metal-oxide-semiconductor is connected with the negative pole of described relay; The emitter-base bandgap grading of described metal-oxide-semiconductor and the equal ground connection of positive pole of described relay.
6. electric vehicle motor controller according to claim 5 is uncapped protection control method, it is characterised in that: between the 3rd wiring pin and the grid of described metal-oxide-semiconductor of described second smooth Rhizoma Nelumbinis isolating chip, it is provided with resistance.
7. electric vehicle motor controller according to claim 5 is uncapped protection control method, it is characterised in that: between the positive pole and the negative pole of described relay of described relay, it is provided with isolating diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105388.0A CN105655974B (en) | 2016-02-25 | 2016-02-25 | A kind of electric vehicle motor controller, which is uncapped, protects control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610105388.0A CN105655974B (en) | 2016-02-25 | 2016-02-25 | A kind of electric vehicle motor controller, which is uncapped, protects control method |
Publications (2)
| Publication Number | Publication Date |
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| CN105655974A true CN105655974A (en) | 2016-06-08 |
| CN105655974B CN105655974B (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610105388.0A Active CN105655974B (en) | 2016-02-25 | 2016-02-25 | A kind of electric vehicle motor controller, which is uncapped, protects control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074758A (en) * | 2021-03-22 | 2021-07-06 | 苏州大学 | Electric equipment, and operation control method and device of electric equipment |
| CN113806828A (en) * | 2021-09-22 | 2021-12-17 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
| CN113911307A (en) * | 2021-08-29 | 2022-01-11 | 西北工业大学 | Isolatable portable charging and discharging device based on autonomous remote control underwater vehicle (ARV) |
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| CN204156502U (en) * | 2014-10-31 | 2015-02-11 | 观致汽车有限公司 | Prevent uncapping high voltage device and there is the electronic of its or motor vehicle driven by mixed power |
| CN204230883U (en) * | 2014-12-04 | 2015-03-25 | 安徽巨一自动化装备有限公司 | A kind of electric machine controller for motor vehicle electric capacity active discharge circuit |
| CN104691350A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual power of high-voltage part of electric car |
| JP5790939B2 (en) * | 2011-12-09 | 2015-10-07 | トヨタ自動車株式会社 | Vehicle lighting device |
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2016
- 2016-02-25 CN CN201610105388.0A patent/CN105655974B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5790939B2 (en) * | 2011-12-09 | 2015-10-07 | トヨタ自動車株式会社 | Vehicle lighting device |
| CN204156502U (en) * | 2014-10-31 | 2015-02-11 | 观致汽车有限公司 | Prevent uncapping high voltage device and there is the electronic of its or motor vehicle driven by mixed power |
| CN204230883U (en) * | 2014-12-04 | 2015-03-25 | 安徽巨一自动化装备有限公司 | A kind of electric machine controller for motor vehicle electric capacity active discharge circuit |
| CN104691350A (en) * | 2015-02-16 | 2015-06-10 | 北京新能源汽车股份有限公司 | Discharging device for residual power of high-voltage part of electric car |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074758A (en) * | 2021-03-22 | 2021-07-06 | 苏州大学 | Electric equipment, and operation control method and device of electric equipment |
| CN113911307A (en) * | 2021-08-29 | 2022-01-11 | 西北工业大学 | Isolatable portable charging and discharging device based on autonomous remote control underwater vehicle (ARV) |
| CN113806828A (en) * | 2021-09-22 | 2021-12-17 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
| CN113806828B (en) * | 2021-09-22 | 2024-02-02 | 深圳市共进电子股份有限公司 | Cover opening protection device and method |
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| Publication number | Publication date |
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| CN105655974B (en) | 2018-02-13 |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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