CN106274496A - A kind of electric automobile actuator control system - Google Patents
A kind of electric automobile actuator control system Download PDFInfo
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- CN106274496A CN106274496A CN201610884341.9A CN201610884341A CN106274496A CN 106274496 A CN106274496 A CN 106274496A CN 201610884341 A CN201610884341 A CN 201610884341A CN 106274496 A CN106274496 A CN 106274496A
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- relay
- signal
- circuit module
- latch
- output
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
Abstract
The invention discloses a kind of electric automobile actuator control system.Described system includes: embedded processing module, drive circuit module and executor circuit module, also includes latch cicuit module；Wherein said embedded processing module, for enabling signal according to operation reserve output relay control signal and latch；Described latch cicuit module includes latching logic unit, for described relay control signal is transferred to drive circuit module, and when receiving described latch enable signal, is latched by described relay control signal；Described drive circuit module, produces for the relay control signal according to input and drives signal, and be transferred to the relay in described executor circuit module；Described executor circuit module, for driving being turned on and off of signal control relay according to receive, thus controls the operating state of motor.Described control system disclosed by the invention improves reliability and the safety that executor controls, and simple in construction, with low cost.
Description
Technical field
The present embodiments relate to electric vehicle engineering field, particularly relate to a kind of electric automobile actuator control system.
Background technology
Electric automobile is typically powered to electrical equipments such as motor by Li-ion batteries piles, thus by motor-driven
Running car.High-voltage relay, as the bridge between Li-ion batteries piles and electrical equipment, has important security implications.High
Potential relay controls general by micro-control unit (Microcontroller Unit, MCU, also referred to as embedded processing module),
Universal input and output port (General Purpose Input Output, GPIO) is carried out with the drive circuit module of relay
Directly control.MCU produces control signal according to operation reserve, is transferred to drive circuit module by GPIO, and then by driving electricity
Road module is converted into the driving signal of relay.Relay and electromotor constitute executor circuit module, drive signal to be transmitted
To the relay in executor circuit module, control it and be turned on and off, in order to connection Li-ion batteries piles is used to motor etc.
The current supply circuit of electricity equipment.
During electric automobile starts, there is corresponding security strategy that high-voltage relay is controlled, it is ensured that electronic
Automobile safety start.But, during electric automobile during traveling, it is existing that MCU is produced reset by external disturbance or other reasons
As, it is impossible to export control signal normally, cause the most each high-voltage relay state to determine and (be probably disconnection to be also likely to be
Guan Bi), it is easily caused unforeseen fault, and then causes equipment and personal security accident.
Prior art is by increasing gate control module, and serial input-parallel pio chip and XOR including being connected are patrolled
Collect gate array.Serial input-parallel pio chip is connected with described MCU module, XOR gate array and described Control
Driving module connects.XOR gate array provides state to control, and pull down resistor guarantees that original state is stable, serial input-parallel
Pio chip provides extension output channel.The instruction sent by serial input-parallel pio chip conversion MCU controls output
The height of level, then carry out logical judgment by XOR gate array, then complete the switching manipulation of corresponding relay.Once
The step that powers on is abnormal and MCU resets, then each high-voltage relay of unified disconnection, waits instruction next time, and this prior art solves
Conventional high-tension means of relay controlling in system electrification and the uncertain problem of reseting procedure breaker in middle state, but simultaneously because
Each high-voltage relay is constantly in off-state, result in the unexpected interruption of electric powered motor, will cause peace greatly
Full hidden danger.
Summary of the invention
The present invention provides a kind of electric automobile actuator control system, to solve asking of MCU reseting procedure medium power interruption
Topic.
For reaching this purpose, the present invention by the following technical solutions:
A kind of electric automobile actuator control system, including embedded processing module, drive circuit module and executor's electricity
Road module, it is characterised in that also include: latch cicuit module, wherein:
Described embedded processing module, for enabling signal according to operation reserve output relay control signal and latch；
Described latch cicuit module includes latching logic unit, is connected with described embedded processing module, for by described
Relay control signal is transferred to drive circuit module by outfan, and when receiving described latch enable signal, by described
The relay control signal of outfan output latches；
Described drive circuit module, is connected with described latching logic unit, for the relay control signal according to input
Produce and drive signal, and be transferred to the relay in described executor circuit module；
Described executor circuit module, is connected with described drive circuit module, for controlling according to the driving signal received
Being turned on and off of relay, thus control the operating state of motor.
Further, in described control system, described embedded processing module is specifically for when system electrification, and output is controlled
Make described executor circuit module carry out the relay control signal of preliminary filling operation and latch enable signal, and terminate at preliminary filling
Time, output controls described executor circuit module and carries out the relay control signal of normal operating and latch enable signal.
Further, in described control system, described latch cicuit module also includes:
Delay startup control unit, is connected with described latching logic unit, and for when the quick power-on and power-off of system, time delay exports
Control the output enable signal that described latching logic unit normally exports；
Described latching logic unit, is additionally operable to when receiving output and enabling signal, by the relay control signal of input
Export from outfan.
Further, in described control system, described latching logic unit includes that latch, described latch include:
At least one relay signal input and at least one relay signal outfan, respectively with described embedded place
The control output end of reason module is connected with the control input of described drive circuit module, for transmission relqy control signal；
Latch and enable input, enable outfan with the latch of described embedded processing module and be connected, be used for receiving described in
Latch and enable signal；
Output enables input, enables outfan with the output of described delay startup control unit and is connected, be used for receiving described in
Output enables signal.
Further, in described control system, described delay startup control unit includes:
The first resistance being connected between system power supply and ground wire and NMOS tube, between described first resistance and NMOS tube
It is connected with described latching logic unit at junction point, is used for exporting described output and enables signal；
Second resistance of series connection and the first electric capacity, in parallel with described first resistance and NMOS tube；
3rd resistance, in parallel with described first electric capacity, and be connected in parallel and be a little connected with the control end of described NMOS tube, it is used for
By the discharge and recharge of described first electric capacity change described in be connected in parallel potential value a little, thus control described NMOS tube conducting or
Disconnect.
Wherein, described latch is multichannel latch.
Further, in described control system, described executor circuit module includes three relays, is respectively master and just continues
Electrical equipment, main negative relay and preliminary filling relay, described preliminary filling relay series limiting resistor, and relay positive with described master is also
Connection；
The relay control signal of described preliminary filling operation includes main positive relay cut-off signal, main negative relay closure signal
With preliminary filling relay closure signal；
The relay control signal of described normal operating includes main positive relay closure signal, main negative relay closure signal
With preliminary filling relay cut-off signal.
By the present invention in that and control by latch cicuit module, it is possible to latch the state of executor, solve electric automobile and exist
Driving conditions produces the problem of power interruption because MCU is disturbed to reset, and improves reliability and safety that executor controls,
And it is simple in construction, with low cost.
Accompanying drawing explanation
The schematic diagram of a kind of electric automobile actuator control system that Fig. 1 provides for the embodiment of the present invention one；
The schematic diagram of the executor circuit module that Fig. 2 provides for the embodiment of the present invention one；
The schematic diagram of a kind of electric automobile actuator control system that Fig. 3 provides for the embodiment of the present invention two.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention is illustrate only rather than entire infrastructure in description, accompanying drawing.
Embodiment one
Fig. 1 is the system schematic of a kind of electric automobile actuator control system that the embodiment of the present invention one provides.Such as Fig. 1
Shown in, the embodiment of the present invention provides a kind of electric automobile actuator control system, is controlled by latch cicuit module in system, energy
Enough latch the state of executor, solve electric automobile at driving conditions because MCU is disturbed to reset produces asking of power interruption
Topic.
Described control system, including embedded processing module 10, drive circuit module 30 and executor circuit module 40, also
Including: latch cicuit module 20, wherein:
Described embedded processing module 10, for enabling letter according to operation reserve output relay control signal and latch
Number；Described latch cicuit module 20 includes latching logic unit 201, is connected with described embedded processing module 10, for by institute
State relay control signal and be transferred to drive circuit module 30 by outfan, and when receiving described latch enable signal, will
The relay control signal of described outfan output latches；Described drive circuit module 30, with described latching logic unit
201 are connected, and produce for the relay control signal according to input and drive signal, and are transferred to described executor circuit module 40
In relay；Described executor circuit module 40, is connected with described drive circuit module 30, for according to the driving letter received
Being turned on and off of number control relay, thus control the operating state of motor.
In such scheme, described embedded processing unit 10 is with the processors such as MCU or ARM and embedded software thereof as core
The heart, its peripheral circuit can flexible configuration, analog-digital converter if necessary, crystal oscillator, EEPROM, outer watchdog as required
(outside monitoring chip) etc., broadly falls into the configuring technical that embedded system is common.It is preferably MCU.
Described latching logic unit 201 is the binary memory device with memory function, such as latch or trigger
For core, the peripheral circuit device that configuration is necessary is constituted.Preferred multichannel latch in the present embodiment, its model is Dezhou instrument
The SN74HC573A-Q1 of device (TI).
Described switch driving circuit unit 30 is with intelligence MOS switch, if high side switches or lower edge switch are core, configuration
Necessary peripheral circuit is constituted.The present embodiment is preferably multichannel high side switches.
Described executor circuit unit 40 can be the equal controllers such as relay, electromagnetic valve.The present embodiment preferably continues
Electrical equipment.
For the scheme implementation process representing the embodiment of the present invention one become apparent from, high with a concrete electric automobile below
Press electricity example to describe in detail:
Signal instruction: H represents that high level, L represent low level.LE_EN is latch control signal, latches and hold during LE_EN=L
Row device state；PRE_EN is preliminary filling relay control signal；NEG_EN is main negative relay control signal；CHG_EN is that charging continues
Electrical appliance control signal；POS_EN is main positive relay control signal.DC5V is embedded processing module 10 and latch cicuit module
The running voltage of 20, the second electric capacity C2 provides more stable voltage for latching logic unit 201VCC end, and resistance R4 and R5 connects
Dividing potential drop, resistance R6, R7, R8 and R9 current limliting input current.
Original state, the non-power up phase of system, all output signal (PRE_EN/NEG_EN/ of embedded processing module 10
POS_EN) it is low level；All output signals (PRE/NEG/POS) of latch cicuit module 20 are low level；Switch drives
Dynamic circuit module 30 and executor circuit module 40 do not work, and preliminary filling relay K 1 disconnects, and main negative relay K 2 disconnects, and master is just
Relay K 3 disconnects
In the system electrification preliminary filling stage, when preliminary filling condition meets, embedded processing module 10 starts preliminary filling process, controls LE_
EN=H → PRE_EN=H, NEG_EN=H, POS_EN=L → LE_EN=L, i.e. controls Guan Bi preliminary filling relay K 1 and continues with main bearing
Electrical equipment K2, the disconnection positive relay K 3 of master, and enable signal latch relay status by latching enable input reception latch.
Preliminary filling ending phase, the main positive relay K 3 of Guan Bi, it may be assumed that LE_EN=H → PRE_EN=H, NEG_EN=H, POS_EN
=H → LE_EN=L, i.e. controls Guan Bi preliminary filling relay K 1 and main negative relay K 2, the main positive relay K 3 of Guan Bi.Postpone certain
After time, disconnect preliminary filling relay K 1, it may be assumed that LE_EN=H → NEG_EN=H, POS_EN=H, PRE_EN=L → LE_EN=L.
So far, electric automobile completes high pressure power-up state, can drive operation normally.Simultaneously by latching enable input reception lock
Depositing enable signal, executor's state is latched, even if when driving, the processor in embedded processing module 10 is disturbed
Resetting, during resetting, executor also can be kept closed, i.e. electric automobile still can maintain power normally to travel,
Avoid the driving safety hidden danger that unexpected adynamia causes.
In the electricity stage under system, all output signals of embedded processing module 10 (PRE_EN/NEG_EN/POS_EN) is low
Level；All output signals (PRE/NEG/POS) of latch cicuit module 20 are low level；Switch driving circuit module 30 and
Executor circuit module 40 quits work, and preliminary filling relay K 1 disconnects, and main negative relay K 2 disconnects, and main positive relay K 3 disconnects.
The schematic diagram of the executor circuit module that Fig. 2 provides for the embodiment of the present invention one, including three relays, is respectively
Preliminary filling relay K 1, main negative relay K 2 and main positive relay K 3, described preliminary filling relay K 1 series limiting resistor R10, and with
Described master positive relay K 3 is in parallel；
In the system electrification preliminary filling stage, the relay control signal of preliminary filling operation includes main positive relay K 3 cut-off signal, master
Negative relay K 2 closure signal and preliminary filling relay K 1 closure signal；
System preliminary filling ending phase, the relay control signal of normal operating includes main positive relay K 3 closure signal, master
Negative relay K 2 closure signal and preliminary filling relay K 1 cut-off signal.
It should be noted that the electric capacity in needing the reason carrying out preliminary filling operation to be motor, in closing of circuit moment, electricity
Without full energy in holding, then in circuit, the charging current of electric capacity can be very big, can cause over-current phenomenon avoidance, so would generally
There is a preliminary filling process, it is simply that carry out being pre-charged (i.e. preliminary filling in the embodiment of the present invention to electric capacity by a current-limiting resistance
Operation), after a while again can (the normal behaviour in the embodiment of the present invention by current-limiting resistance short circuit during normal circuit operation
Make).
The embodiment of the present invention is by using latching logic unit 201, it is possible to latches the state of executor, solves electronic vapour
Car because MCU is disturbed to reset produces the problem of power interruption, improves reliability and peace that executor controls at driving conditions
Quan Xing, and simple in construction, with low cost.
Embodiment two
The schematic diagram of a kind of electric automobile actuator control system that Fig. 3 provides for the embodiment of the present invention two.
Described latch cicuit module 20 includes latching logic unit 201, also includes delay startup control unit 202.
Delay startup control unit 202, is connected with described latching logic unit 201, for when the quick power-on and power-off of system, prolongs
Time output control the output that normally exports of described latching logic unit 201 and enable signal；
Described latching logic unit 201, is additionally operable to when receiving output and enabling signal, by the Control letter of input
Number from outfan export.
Described latch circuit units 201 and delay startup control unit 202 are connected by output Enable Pin, have common work
Power supply and place of working.
Described delay startup control unit 202 includes:
The first resistance R3 and NMOS tube Q1 being connected between system power supply and ground wire, described first resistance R3 and NMOS tube
Junction point OE end between Q1 is connected with described latching logic unit 201, is used for exporting described output and enables signal；
The second resistance R1 and the first electric capacity C1 of series connection, in parallel with described first resistance R3 and NMOS tube Q1；
3rd resistance R2, in parallel with described first electric capacity C1, and it is connected in parallel the control of an OE end and described NMOS tube Q1
End is connected, and is connected in parallel a potential value for OE end, thus controls described in being changed by the discharge and recharge of described first electric capacity C1
Being turned on or off of described NMOS tube Q1.
During the pin input low level of OE end, latching logic unit 201 is the most in running order, is otherwise in high-impedance state,
Namely latching logic unit 201 does not works, say, that be in renunciation with upper level circuit.
Under some application scenario, in upward and downward electric process as quick in system, i.e. just to have descended electricity to power on the most again (lower electric and upper for system
Electricity is less than 1 second interval time), now the shortest due to the time, DC5V directly cannot decline quickly by normal running voltage such as 5V
To 0V, the decline process of general power supply, because the devices such as circuit storage capacitor exist, DC5V can drop quickly to about 1V, so
Rear drop to 0 the most lentamente.And the memory function device such as existing latch or trigger supply voltage at about 0.5V time,
Its internal logic circuit can tanglewrack, if now fast powering-up, will produce the output of mistake, such as main positive relay and master
Negative relay can be closed at, and causes without the upper high pressure of preliminary filling process, thus produces bigger surge current, damages
Relay.For avoiding this situation, delay startup control unit 202 role is exactly in quick upward and downward electric process, time delay control
System starts latching logic unit 201.
For the scheme implementation process representing the embodiment of the present invention become apparent from, with an instantiation, (system is fast below
Speed power-on and power-off) describe in detail:
When system quickly lower electricity, DC5V is less than power-down to about 2V, the dividing potential drop of the second resistance R1 and the 3rd resistance R2
The cut-in voltage of NMOS tube Q1, thus NMOS tube Q1 turns off, OE terminal voltage is pulled to power supply voltage by the first resistance R3, place
In high level, thus latching logic unit 201 outfan is closed；When system fast powering-up in 1S, DC5V rapidly increases to
Normal running voltage such as 5V, owing to delay startup control unit 201 exists, NMOS tube Q1 is held off, and OE is in high level, lock
The outfan depositing logical block 201 is kept cut out；The driving voltage of NMOS tube Q1 is via status resistance R1 and the first electric capacity C1
The charging circuit constituted is gradually increasing, and the time of delay startup is determined by the time constant of the second resistance R1 and the first electric capacity C1, excellent
Selection of land, the present embodiment the second resistance R1=100K Ω, the first electric capacity C1=4.7uF.When the first electric capacity C1 charging voltage reaches
During the cut-in voltage of NMOS tube Q1, NMOS tube Q1 turns on, thus OE is in low level, it is allowed to latching logic unit 201 is controlled defeated
Go out.
The embodiment of the present invention is by using delay startup control unit 202, and delays time to control starts latching logic module 201, solves
Having determined in the quick upward and downward electric process of system, the situation of latching logic module 201 mistake output occurs, and improves latch cicuit mould
The reliability of block 20 and safety.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example, the present invention is carried out
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (7)
1. an electric automobile actuator control system, including embedded processing module, drive circuit module and executor circuit
Module, it is characterised in that also include: latch cicuit module, wherein:
Described embedded processing module, for enabling signal according to operation reserve output relay control signal and latch；
Described latch cicuit module includes latching logic unit, is connected with described embedded processing module, for by described relay
Device control signal is transferred to drive circuit module by outfan, and when receiving described latch enable signal, by described output
The relay control signal of end output latches；
Described drive circuit module, is connected with described latching logic unit, produces for the relay control signal according to input
Drive signal, and be transferred to the relay in described executor circuit module；
Described executor circuit module, is connected with described drive circuit module, for controlling relay according to the driving signal received
Being turned on and off of device, thus control the operating state of motor.
System the most according to claim 1, it is characterised in that described embedded processing module is specifically in system electrification
Time, output controls described executor circuit module and carries out the relay control signal of preliminary filling operation and latch enable signal, and
At the end of preliminary filling, output controls described executor circuit module and carries out the relay control signal of normal operating and latch enable letter
Number.
System the most according to claim 1, it is characterised in that described latch cicuit module also includes:
Delay startup control unit, is connected with described latching logic unit, and for when the quick power-on and power-off of system, time delay output controls
The output that described latching logic unit normally exports enables signal；
Described latching logic unit, is additionally operable to when receiving output and enabling signal, by the relay control signal of input from defeated
Go out end output.
System the most according to claim 3, it is characterised in that described latching logic unit includes latch, described latch
Device includes:
At least one relay signal input and at least one relay signal outfan, respectively with described embedded processing mould
The control output end of block is connected with the control input of described drive circuit module, for transmission relqy control signal；
Latching and enable input, the latch with described embedded processing module enables outfan and is connected, and is used for receiving described latch
Enable signal；
Output enables input, and the output with described delay startup control unit enables outfan and is connected, and is used for receiving described output
Enable signal.
System the most according to claim 3, it is characterised in that described delay startup control unit includes:
The first resistance being connected between system power supply and ground wire and NMOS tube, the connection between described first resistance and NMOS tube
It is connected with described latching logic unit at Dian, is used for exporting described output and enables signal；
Second resistance of series connection and the first electric capacity, in parallel with described first resistance and NMOS tube；
3rd resistance, in parallel with described first electric capacity, and be connected in parallel and be a little connected with the control end of described NMOS tube, it is used for passing through
The discharge and recharge of described first electric capacity is connected in parallel potential value a little described in changing, thus control described NMOS tube lead on-off
Open.
System the most according to claim 3, it is characterised in that described latch is multichannel latch.
System the most according to claim 2, it is characterised in that described executor circuit module includes three relays, point
It is not main positive relay, main negative relay and preliminary filling relay, described preliminary filling relay series limiting resistor, and with described master just
Relay is in parallel；
The relay control signal of described preliminary filling operation includes main positive relay cut-off signal, main negative relay closure signal and pre-
Fill relay closure signal；
The relay control signal of described normal operating includes main positive relay closure signal, main negative relay closure signal and pre-
Fill relay cut-off signal.
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| CN201610884341.9A CN106274496B (en) | 2016-10-09 | 2016-10-09 | A kind of electric car actuator control system |
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|---|---|---|---|
| CN201610884341.9A CN106274496B (en) | 2016-10-09 | 2016-10-09 | A kind of electric car actuator control system |
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| CN110828916A (en) * | 2019-11-01 | 2020-02-21 | 天津市捷威动力工业有限公司 | Control device and control method for high-voltage relay of battery system |
| CN111016658A (en) * | 2019-12-10 | 2020-04-17 | 宁波吉利汽车研究开发有限公司 | High-voltage interlocking loop, fault detection method and vehicle |
| CN112086313A (en) * | 2020-09-14 | 2020-12-15 | 东软睿驰汽车技术（沈阳）有限公司 | Battery pack relay protection circuit and protection method |
| CN113540586A (en) * | 2021-06-17 | 2021-10-22 | 宁波吉利汽车研究开发有限公司 | High-voltage relay control system, high-voltage output control method and automobile |
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| CN110473742A (en) * | 2018-05-10 | 2019-11-19 | 联合汽车电子有限公司 | High-voltage relay control circuit, battery management system and electronic device |
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| CN110828916A (en) * | 2019-11-01 | 2020-02-21 | 天津市捷威动力工业有限公司 | Control device and control method for high-voltage relay of battery system |
| CN111016658A (en) * | 2019-12-10 | 2020-04-17 | 宁波吉利汽车研究开发有限公司 | High-voltage interlocking loop, fault detection method and vehicle |
| CN111016658B (en) * | 2019-12-10 | 2022-07-19 | 宁波吉利汽车研究开发有限公司 | High-voltage interlocking loop, fault detection method and vehicle |
| CN112086313A (en) * | 2020-09-14 | 2020-12-15 | 东软睿驰汽车技术（沈阳）有限公司 | Battery pack relay protection circuit and protection method |
| CN113540586A (en) * | 2021-06-17 | 2021-10-22 | 宁波吉利汽车研究开发有限公司 | High-voltage relay control system, high-voltage output control method and automobile |
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