CN105655974B - A kind of electric vehicle motor controller, which is uncapped, protects control method - Google Patents
A kind of electric vehicle motor controller, which is uncapped, protects control method Download PDFInfo
- Publication number
- CN105655974B CN105655974B CN201610105388.0A CN201610105388A CN105655974B CN 105655974 B CN105655974 B CN 105655974B CN 201610105388 A CN201610105388 A CN 201610105388A CN 105655974 B CN105655974 B CN 105655974B
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- uncapped
- electric machine
- machine controller
- light
- chip
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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
-
- 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
Uncapped the present invention relates to a kind of electric vehicle motor controller and protect control method, the A/D interfaces of main control chip, which are uncapped, protects the testing signal of uncapping of detection circuit input；Main control chip judges the testing signal of uncapping for high level or low level；By judging low and high level, determine whether output drive signal control active discharge drive circuit performs bus discharge to main control chip.The electric machine controller of the present invention is uncapped guard method; pass through the first optocoupler 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 the second optocoupler isolating chip is passed through to active discharge drive circuit; bus is isolated with control circuit, protects the safety of maintenance personal.
Description
Technical field
The invention belongs to electric machine controller and motor safety systems technology field, a kind of motor in electric automobile control is particularly related to
Device processed, which is uncapped, protects control method.
Background technology
Under the background that low-carbon economy turns into the mainstream of the times, electric automobile turns into the Main way of current development of automobile.With
Constantly advancing for electric automobile, powerful electric machine controller is come out one after another, the motor that new-energy automobile uses at present
Controller input is high input voltage system, to make motor controller system normal work, busbar voltage must be maintained at certain model
In enclosing；If busbar voltage is too high, beyond IGBG, ((Insulated Gate Bipolar Transistor insulation three is ambipolar
Power tube) voltage endurance capability, IGBT will be damaged；If busbar voltage is too low, MOSFET pipes can exit saturation region and enter amplification
Area, MOSFET pipes caloric value increase and cause cause thermal damage, and the busbar voltage master used at present will be typically higher than 300V.
High input voltage system is in the case of maintenance and irregular operation, and injury of the high direct voltage to human body is very big, even
Threat to life, for injury of the high pressure to human body caused by preventing maloperation, a set of protection system of uncapping need to be designed, that is, need to beat
When opening the cover plate of electric machine controller, quickly busbar voltage can be down in the range of safe voltage, to prevent the generation got an electric shock, reached
To the effect of protection staff and device.
The content of the invention
Uncapped it is an object of the invention to provide a kind of electric vehicle motor controller and protect control method, by this controlling party
Bus when method is to realize that electric machine controller is uncapped discharges in time, protects the safety of maintenance personal.
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 interfaces of main control chip are uncapped protection
Detect the testing signal of uncapping of circuit input；
The main control chip judges the testing signal of uncapping for high level or low level；
If the testing signal of uncapping is high level, it is judged as that electric machine controller is not uncapped operation；Electric machine controller system
System normal work；
If the testing signal of uncapping is low level, it is judged as that electric machine controller is uncapped operation；The main control chip output
Drive signal, the drive signal input to the control terminal of active discharge drive circuit, are held by the active discharge drive circuit
Row bus discharge.
In the protection detection circuit of uncapping, when the electric machine controller is not uncapped, electric machine controller cover plate is arranged at
On the first door switch and the second door switch for being arranged on the electric machine controller box body connect, now, the motor control
After voltage signal between device cover plate and the electric machine controller box body is changed by the first optocoupler isolating chip, first light
Lotus root isolating chip is with high level output testing signal of uncapping；
After the electric machine controller is uncapped, first door switch disconnects with second door switch, now, the electricity
Voltage signal between machine controller cover plate and the electric machine controller box body is not changed by the first optocoupler isolating chip,
The first optocoupler isolating chip is with low level output testing signal of uncapping.
The protection detection circuit of uncapping includes the first optocoupler isolating chip, the first door switch, the second door switch；Described
One door switch is arranged on the cover plate of the electric machine controller；The first wiring pin and power supply of the first optocoupler isolating chip are just
Pole is connected, and first door switch is connected with the second wiring pin of the first optocoupler isolating chip；
Second door switch is arranged in the electric machine controller, and second door switch is opened with described first respectively
Close and power cathode connects；
The 3rd wiring pin ground connection of the first optocoupler isolating chip；4th wiring pin of the first optocoupler isolating chip
It is connected with the A/D interfaces of the main control chip.
In the active discharge drive circuit, after receiving the drive signal, the drive signal drives the second optocoupler
Isolating chip turns on, and supply voltage turns on the grid of metal-oxide-semiconductor by the second optocoupler isolating chip, with the metal-oxide-semiconductor source electrode
The bus discharge of connection.
The active discharge drive circuit includes the second optocoupler isolating chip, power supply, metal-oxide-semiconductor, relay；The motor control
The control power supply of device processed is connected with the first wiring pin of the second optocoupler isolating chip；The of the second optocoupler isolating chip
Two wiring pins are connected with the drive signal；3rd wiring pin of the second optocoupler isolating chip and the grid of the metal-oxide-semiconductor
Connection；The power supply is connected with the 4th wiring pin of the second optocoupler isolating chip；
The source electrode of the metal-oxide-semiconductor is connected with the negative pole of the relay；The emitter-base bandgap grading of the metal-oxide-semiconductor and the relay are just
Extremely it is grounded.
Grid electricity is provided between the 3rd wiring pin of the second optocoupler isolating chip and the grid of the metal-oxide-semiconductor
Resistance.
Isolating diode is provided between the positive pole of the relay and the negative pole of the relay.
The beneficial effects of the invention are as follows：
The electric machine controller of the present invention is uncapped guard method, by the first optocoupler isolating chip, is accurately judged to current electricity
The on off operating mode on road, recognise that carrying out electric machine controller uncaps action, and the second light is passed through to active discharge drive circuit
Lotus root isolating chip, bus is isolated with control circuit, protects the safety of maintenance personal.
Brief description of the drawings
Fig. 1 uncaps for electric machine controller of the present invention and protects control logic figure；
Fig. 2 uncaps for the present invention protects detection circuit theory diagrams；
Fig. 3 is active discharge driver circuit schematic diagram of the present invention.
Embodiment
Describe technical scheme in detail by the following examples, following embodiment be only it is exemplary, only
Explanation and illustration technical scheme can be used for, and be not to be construed as the limitation to technical solution of the present invention.
A kind of electric vehicle motor controller of present invention offer, which is uncapped, protects control method, and design, which is uncapped, protects detection electric
Road, by the level change of the testing signal of uncapping for protection detection circuit of uncapping, judge whether driving actively by main control chip
Electric discharge drive circuit works.
As shown in Fig. 2 protection detection circuit of uncapping includes the first optocoupler isolating chip, the first door switch, the second door switch；
First door switch is arranged on the cover plate of the electric machine controller；The first wiring pin and 12V of the first optocoupler isolating chip
Positive source is connected, and first door switch is connected with the second wiring pin of the first optocoupler isolating chip；In positive source
Filter circuit is additionally provided between the first wiring pin of the first optocoupler isolating chip.
Second door switch is arranged in the electric machine controller, and second door switch is opened with described first respectively
Close and 12V power cathodes connect.
The 3rd wiring pin ground connection of the first optocoupler isolating chip；The first optocoupler isolating chip the 3rd wiring pin with
Pull down resistor is additionally provided between ground connection；4th wiring pin of the first optocoupler isolating chip and the A/D of the main control chip
Interface connects.
In the protection detection circuit of uncapping, when the electric machine controller is not uncapped, electric machine controller cover plate is arranged at
On the first door switch and the second door switch for being arranged on the electric machine controller box body connect, in the first optocoupler isolating chip
LED operation, now, the voltage signal between the electric machine controller cover plate and the electric machine controller box body leads to
After crossing the conversion of the first optocoupler isolating chip, the first optocoupler isolating chip is with high level output testing signal of uncapping to main control
Chip.
After the electric machine controller is uncapped, first door switch and second door switch disconnect, the first optocoupler every
Light emitting diode in off-chip piece does not work, now, between the electric machine controller cover plate and the electric machine controller box body
Voltage signal is not changed by the first optocoupler isolating chip, and the first optocoupler isolating chip is uncapped inspection with low level output
Signal is surveyed to main control chip, and the voltage exported is not higher than the control operating voltage 3.3V of electric machine controller.
The testing signal of uncapping of protection detection circuit input as shown in figure 1, the A/D interfaces of main control chip are uncapped；It is main
Control chip passes through internal judgment；The main control chip judges the testing signal of uncapping for high level or low level.
If the testing signal of uncapping is high level, it is judged as that electric machine controller is not uncapped operation；Electric machine controller system
System normal work.
If the testing signal of uncapping is low level, it is judged as that electric machine controller is uncapped operation；The main control chip passes through
Port output module output drive signal, the drive signal input to the control terminal of active discharge drive circuit, by the master
Dynamic electric discharge drive circuit performs bus discharge.
As shown in figure 3, the active discharge drive circuit includes the second optocoupler isolating chip, power supply, metal-oxide-semiconductor, relay；
The 3.3V control power supplys of the electric machine controller are connected with the first wiring pin of the second optocoupler isolating chip；Second light
The drive signal of the output module output of the second wiring pin and main control chip of lotus root isolating chip connects；Second optocoupler
3rd wiring pin of isolating chip is connected by resistance with the grid of the metal-oxide-semiconductor；12V power supplys and second optocoupler every
The 4th wiring pin connection of off-chip piece.
The source electrode of the metal-oxide-semiconductor is connected with the negative pole of the relay；The emitter-base bandgap grading of the metal-oxide-semiconductor and the relay are just
Extremely it is grounded.
Isolating diode is provided between the positive pole of the relay and the negative pole of the relay, to prevent relay
Positive pole and negative pole between electrically connect.
In the active discharge drive circuit, after receiving the drive signal, the drive signal drives the second optocoupler
Isolating chip turns on, and 12V supply voltages turn on the grid of metal-oxide-semiconductor by the second optocoupler isolating chip, with the metal-oxide-semiconductor source
The bus discharge of pole connection.
In this application, the pressure-resistant ceiling voltage for needing the control work more than electric machine controller of relay, active release
Electric drive circuit is connected, and is started working, and according to functional safety demand, active discharge requirement reduced busbar voltage within 5 seconds
Into below 60V safe voltage, in the present embodiment, according to being calculated for T=RC, the electric discharge of active discharge drive circuit
Resistance selects 4.7K, and in the other embodiments of the application, discharge resistance has no effect on according to being actually needed by calculating selection
The implementation of technical scheme.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (6)
- The protection control method 1. a kind of electric vehicle motor controller is uncapped, it is characterised in that：The A/D interfaces of main control chip Protection of uncapping detects the testing signal of uncapping of circuit input；The main control chip judges the testing signal of uncapping for high level or low level；If the testing signal of uncapping is high level, it is judged as that electric machine controller is not uncapped operation；Motor controller system is just Often work；If the testing signal of uncapping is low level, it is judged as that electric machine controller is uncapped operation；The main control chip output driving Signal, the drive signal input to the control terminal of active discharge drive circuit, and mother is performed by the active discharge drive circuit Line discharges；In the protection detection circuit of uncapping, when the electric machine controller is not uncapped, it is arranged on electric machine controller cover plate First door switch and the second door switch being arranged on the electric machine controller box body are connected, now, the electric machine controller lid After voltage signal between plate and the electric machine controller box body is changed by the first light-coupled isolation chip, first optocoupler every Off-chip piece is with high level output testing signal of uncapping；After the electric machine controller is uncapped, first door switch disconnects with second door switch, now, the motor control Voltage signal between device cover plate processed and the electric machine controller box body is not changed by first light-coupled isolation chip, described First light-coupled isolation chip is with low level output testing signal of uncapping.
- The protection control method 2. electric vehicle motor controller according to claim 1 is uncapped, it is characterised in that：It is described to open Lid protection detection circuit includes the first light-coupled isolation chip, the first door switch, the second door switch；First door switch is arranged at On the cover plate of the electric machine controller；First wiring pin of first light-coupled isolation chip is connected with positive source, and described One door switch is connected with the second wiring pin of first light-coupled isolation chip；Second door switch is arranged in the electric machine controller, second door switch respectively with first door switch and Power cathode connects；The 3rd wiring pin ground connection of first light-coupled isolation chip；4th wiring pin of first light-coupled isolation chip and institute State the A/D interfaces connection of main control chip.
- The protection control method 3. electric vehicle motor controller according to claim 1 is uncapped, it is characterised in that：The master In dynamic electric discharge drive circuit, after receiving the drive signal, the drive signal drives the conducting of the second light-coupled isolation chip, electricity Source voltage turns on the grid of metal-oxide-semiconductor, the bus discharge being connected with the metal-oxide-semiconductor source electrode by second light-coupled isolation chip.
- The protection control method 4. electric vehicle motor controller according to claim 1 is uncapped, it is characterised in that：The master Dynamic electric discharge drive circuit includes the second light-coupled isolation chip, power supply, metal-oxide-semiconductor, relay；The control power supply of the electric machine controller It is connected with the first wiring pin of second light-coupled isolation chip；Second wiring pin of second light-coupled isolation chip with it is described Drive signal connects；3rd wiring pin of second light-coupled isolation chip is connected with the grid of the metal-oxide-semiconductor；The power supply with The 4th wiring pin connection of second light-coupled isolation chip；The source electrode of the metal-oxide-semiconductor is connected with the negative pole of the relay；The positive pole of the relay is connected with 12V power supplys；It is described The grounded drain of metal-oxide-semiconductor.
- The protection control method 5. electric vehicle motor controller according to claim 4 is uncapped, it is characterised in that：Described Resistance is provided between 3rd wiring pin of the second light-coupled isolation chip and the grid of the metal-oxide-semiconductor.
- The protection control method 6. electric vehicle motor controller according to claim 4 is uncapped, it is characterised in that：Described Isolating diode is provided between the negative pole of the positive pole of relay and the relay.
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 |
|---|---|
| CN105655974A CN105655974A (en) | 2016-06-08 |
| CN105655974B true CN105655974B (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Families Citing this family (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 |
| 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) |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-02-25 CN CN201610105388.0A patent/CN105655974B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN105655974A (en) | 2016-06-08 |
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| CB02 | Change of applicant information |
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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