CN206124777U - Electric automobile executor control system - Google Patents
Electric automobile executor control system Download PDFInfo
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- CN206124777U CN206124777U CN201621110441.8U CN201621110441U CN206124777U CN 206124777 U CN206124777 U CN 206124777U CN 201621110441 U CN201621110441 U CN 201621110441U CN 206124777 U CN206124777 U CN 206124777U
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- relay
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Abstract
The utility model discloses an electric automobile executor control system. The system includes: embedded processing module, drive circuit module and executor circuit module are still including latching circuit module, wherein the embedded processing module for export relay control signal and latch enable signal according to the operation tactics, the latch circuit module is including latching logic unit, be used for with relay control signal transmission gives the drive circuit module, and receives when latching enable signal, will the relay control signal latch, the drive circuit module for relay control signal according to the input produces drive signal, and the transmission is given relay among the executor circuit module, executor circuit module for according to the opening or closing of the drive signal control relay received, thus the operation state of control motor. The utility model discloses a control system has improved reliability and the security of executor control, and simple structure, low cost.
Description
Technical field
The utility model embodiment is related to electric vehicle engineering field, more particularly to a kind of electric automobile actuator control system
System.
Background technology
Electric automobile is typically powered from Li-ion batteries piles to electrical equipments such as motor, so as to by motor-driven
Running car.High-voltage relay as the bridge between Li-ion batteries piles and electrical equipment, with important security implications.It is high
Potential relay is controlled typically 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, and by GPIO drive circuit module is transferred to, and then electric by driving
Road module is converted into the drive signal of relay.Relay and motor mechanism are transmitted into executor circuit module, drive signal
To the relay in executor circuit module, control it and be turned on and off, use to motor etc. to connect Li-ion batteries piles
The current supply circuit of electric equipment.
During electric automobile starts, there is corresponding security strategy to be controlled high-voltage relay, it is ensured that electronic
Automobile safety start.But, during electric automobile during traveling, MCU is subject to external disturbance or other reasonses and produces reset now
As, it is impossible to normal output control signal, cause now each high-voltage relay state to determine and (possibly disconnect and be also likely to be
Closure), unforeseen failure is easily caused, and then cause equipment and personal security accident.
Prior art is patrolled by increase gate control module, including connected serial input-parallel pio chip and XOR
Collect gate array.Serial input-parallel pio chip is connected with the MCU module, XOR gate array and the Control
Drive module connects.XOR gate array provides state control, and pull down resistor guarantees that original state is stablized, serial input-parallel
Pio chip provides extension output channel.The instruction of MCU transmissions is changed come controlled output by serial input-parallel pio chip
The height of level, then logic judgment is carried out by XOR gate array, the switching manipulation of corresponding relay is completed then.Once
Electric step is abnormal and MCU resets in generation, then unified to disconnect each high-voltage relay, waits instruction next time, this prior art to solve
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 greatly peace
Full hidden danger.
Utility model content
The utility model provides a kind of electric automobile actuator control system, to solve MCU reseting procedures in power interruption
Problem.
It is that, up to this purpose, the utility model is employed the following technical solutions：
A kind of electric automobile actuator control system, including embedded processing module, drive circuit module and actuator electricity
Road module, it is characterised in that also include：Latch cicuit module, wherein：
The embedded processing module, for enabling signal according to operation reserve output relay control signal and latch；
The latch cicuit module includes latching logic unit, is connected with the embedded processing module, for will be described
Relay control signal is transferred to drive circuit module by output end, and when receiving the latch enable signal, will be described
The relay control signal of output end output is latched；
The drive circuit module, is connected with the latching logic unit, for according to the relay control signal of input
Produce drive signal, and the relay being transferred in the executor circuit module；
The executor circuit module, is connected with the drive circuit module, for according to the drive signal control for receiving
Relay is turned on and off, so as to controlling the operating state of motor.
Further, in the control system, the embedded processing module is specifically in system electrification, output is controlled
Making the executor circuit module carries out the relay control signal of preliminary filling operation and latches to enable signal, and terminates in preliminary filling
When, executor circuit module described in output control carries out the relay control signal of normal operating and latches to enable signal.
Further, in the control system, the latch cicuit module also includes：
Delay startup control unit, is connected with the latching logic unit, for when the quick power-on and power-off of system, time delay output
Controlling the latching logic unit carries out the output enable signal of normal output；
The latching logic unit, is additionally operable to when output enable signal is received, the relay control signal that will be input into
From output end output.
Further, in the control system, the latching logic unit includes latch, and the latch includes：
At least one relay signal input and at least one relay signal output end, respectively with the embedded place
The control output end of reason module is connected with the control signal of the drive circuit module, for transmission relqy control signal；
Latch and enable input, the latch with the embedded processing module enables output end and is connected, described for receiving
Latch and enable signal；
Output enables input, and the output with the delay startup control unit enables output end and is connected, described for receiving
Output enables signal.
Further, in the control system, the delay startup control unit includes：
The first resistor and NMOS tube being connected between system power supply and ground wire, between the first resistor and NMOS tube
It is connected with the latching logic unit at tie point, for exporting the output signal is enabled；
The second resistance of series connection and the first electric capacity, it is in parallel with the first resistor and NMOS tube；
3rd resistor, it is in parallel with first electric capacity, and be connected in parallel and be a little connected with the control end of the NMOS tube, it is used for
By the discharge and recharge of first electric capacity change described in be connected in parallel potential value a little, so as to control the NMOS tube conducting or
Disconnect.
Wherein, the latch is multichannel latch.
Further, in the control system, the executor circuit module includes three relays, respectively based on just after
Electrical equipment, main negative relay and preliminary filling relay, the preliminary filling relay series limiting resistor, and with the positive relay of the master simultaneously
Connection；
The relay control signal of the preliminary filling operation includes the positive relay cut-off signal of master, main negative relay closure signal
With preliminary filling relay closure signal；
The relay control signal of the normal operating includes the positive relay closure signal of master, main negative relay closure signal
With preliminary filling relay cut-off signal.
The utility model is controlled by using latch cicuit module, can latch the state of actuator, solves electronic vapour
Car, because MCU is disturbed to reset produces the problem of power interruption, improves the reliability and peace of actuator control in driving conditions
Quan Xing, and it is simple structure, with low cost.
Description of the drawings
Fig. 1 is a kind of schematic diagram of electric automobile actuator control system that the utility model embodiment one is provided；
Fig. 2 is the schematic diagram of the executor circuit module that the utility model embodiment one is provided；
Fig. 3 is a kind of schematic diagram of electric automobile actuator control system that the utility model embodiment two is provided.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is described in further detail.It is understood that herein
Described specific embodiment is used only for explanation the utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, the part related to the utility model rather than entire infrastructure are illustrate only in accompanying drawing.
Embodiment one
Fig. 1 is a kind of system schematic of electric automobile actuator control system that the utility model embodiment one is provided.
As shown in figure 1, the utility model embodiment provides a kind of electric automobile actuator control system, by latch cicuit mould in system
Block is controlled, and can latch the state of actuator, solves electric automobile in driving conditions because MCU is disturbed reset and produces power
The problem of interruption.
The control system, including embedded processing module 10, drive circuit module 30 and executor circuit module 40, also
Including：Latch cicuit module 20, wherein：
The embedded processing module 10, for enabling letter according to operation reserve output relay control signal and latch
Number；The latch cicuit module 20 includes latching logic unit 201, is connected with the embedded processing module 10, for by institute
State relay control signal and drive circuit module 30 is transferred to by output end, and when receiving the latch enable signal, will
The relay control signal of the output end output is latched；The drive circuit module 30, with the latching logic unit
201 are connected, and for producing drive signal according to the relay control signal of input, and are transferred to the executor circuit module 40
In relay；The executor circuit module 40, is connected with the drive circuit module 30, for according to the driving letter for receiving
Number control relay is turned on and off, so as to control the operating state of motor.
In such scheme, the embedded processing unit 10 is with the processors such as MCU or ARM and its embedded software as core
The heart, its peripheral circuit can flexible configuration as needed, analog-digital converter if necessary, crystal oscillator, EEPROM, outer watchdog
(outside monitoring chip) etc., belongs to the common configuring technical of embedded system.Preferably MCU.
The latching logic unit 201 is with the binary memory device with memory function, such as latch or trigger
For core, configure necessary peripheral circuit device and constitute.Preferred multichannel latch in the present embodiment, its model Dezhou instrument
The SN74HC573A-Q1 of device (TI).
The switch driving circuit unit 30 is that such as high side switches or lower edge switch is core, is configured with intelligent MOS switch
Necessary peripheral circuit is constituted.The present embodiment is preferably multichannel high side switches.
The executor circuit unit 40 can be relay, the equal controller such as magnetic valve.The present embodiment be preferably after
Electrical equipment.
For the scheme implementation process for representing the utility model embodiment one for becoming apparent from, below with a concrete electronic vapour
The upper electricity example of overall height pressure describes in detail：
Signal instruction：H represents high level, and L represents low level.LE_EN is latch control signal, latches during LE_EN=L and holds
Row device state；PRE_EN is preliminary filling relay control signal；Relay control signal is born based on NEG_EN；CHG_EN for charge after
Electrical appliance control signal；Positive relay control signal based on POS_EN.DC5V is embedded processing module 10 and latch cicuit module
20 operating voltage, the second electric capacity C2 provides more stable voltage, resistance R4 and R5 series connection for latching logic unit 201VCC ends
Partial pressure, 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 K1 disconnects, and main negative relay K2 disconnects, and master is just
Relay K3 disconnects
System electrification charging 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. control closure preliminary filling relay K1 with it is main negative after
Electrical equipment K2, disconnects main positive relay K3, and latches enable signal latch relay status by latching enable input reception.
Preliminary filling ending phase, the positive relay K3 of closure master, i.e.,：LE_EN=H → PRE_EN=H, NEG_EN=H, POS_EN
=H → LE_EN=L, i.e. control closure preliminary filling relay K1 and main negative relay K2, the positive relay K3 of closure master.Postpone certain
After time, preliminary filling relay K1 is disconnected, i.e.,：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 normally drive operation.Receive lock by latching enable input simultaneously
Enable signal is deposited, actuator state is latched, even if when driving, the processor in embedded processing module 10 is disturbed
Reset, during reset, actuator also can be kept closed, i.e., electric automobile still can maintain power normally travel,
Avoid driving safety hidden danger caused by unexpected adynamia.
In the electric stage under system, all output signals (PRE_EN/NEG_EN/POS_EN) of embedded processing module 10 are 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 K1 disconnects, and main negative relay K2 disconnects, and the positive relay K3 of master disconnects.
The schematic diagram of the executor circuit module that Fig. 2 is provided for the utility model embodiment one, including three relays, point
Not Wei preliminary filling relay K1, main negative relay K2 and the positive relay K3 of master, preliminary filling relay K1 series limiting resistors R10,
And relay K3 positive with the master is in parallel；
System electrification charging stage, the relay control signal of preliminary filling operation includes the positive relay K3 cut-off signals of master, master
Negative relay K2 closure signals and preliminary filling relay K1 closure signals；
System preliminary filling ending phase, the relay control signal of normal operating includes the positive relay K3 closure signals of master, master
Negative relay K2 closure signals and preliminary filling relay K1 cut-off signals.
It should be noted that it is the electric capacity in motor to need to carry out the reason for preliminary filling is operated, in closing of circuit moment, electricity
If not being full of energy in holding, the charging current of electric capacity can be very big in circuit, can cause over-current phenomenon avoidance, so would generally
There is a preliminary filling process, line precharge is entered (i.e. in the utility model embodiment to electric capacity by a current-limiting resistance
Preliminary filling is operated), after a while again can be (in the utility model embodiment by current-limiting resistance short circuit during normal circuit operation
Normal operating).
The utility model embodiment can latch the state of actuator by using latching logic unit 201, solve electricity
Electrical automobile, because MCU is disturbed to reset produces the problem of power interruption, improves the reliability of actuator control in driving conditions
And security, and it is simple structure, with low cost.
Embodiment two
Fig. 3 is a kind of schematic diagram of electric automobile actuator control system that the utility model embodiment two is provided.
The latch cicuit module 20 includes latching logic unit 201, also including delay startup control unit 202.
Delay startup control unit 202, is connected with the latching logic unit 201, for when the quick power-on and power-off of system, prolonging
When latching logic unit 201 described in output control carry out the output of normal output and enable signal；
The latching logic unit 201, is additionally operable to when output enable signal is received, by the Control letter of input
Number from output end output.
The latch circuit units 201 and delay startup control unit 202 have common work by output Enable Pin connection
Power supply and place of working.
The delay startup control unit 202 includes：
First resistor R3 and NMOS tube Q1 being connected between system power supply and ground wire, first resistor R3 and NMOS tube
Tie point OE ends between Q1 are connected with the latching logic unit 201, and for exporting the output signal is enabled；
Second resistance R1 of series connection and the first electric capacity C1, it is in parallel with first resistor R3 and NMOS tube Q1；
3rd resistor R2, it is in parallel with the first electric capacity C1, and it is connected in parallel the control at point OE ends and NMOS tube Q1
End is connected, for the potential value by being connected in parallel point OE ends described in the discharge and recharge of the first electric capacity C1 change, so as to control
NMOS tube Q1 is turned on or off.
During the pin input low level at OE ends, latching logic unit 201 is just in running order, otherwise in high-impedance state,
Namely latching logic unit 201 does not work, that is to say, that and upper level circuit is in renunciation.
Under some application scenarios, such as in the quick upward and downward electric process of system, i.e., system just lower electricity immediately again upper electricity (it is lower it is electric with it is upper
Electric interval time is less than 1 second), now because the time is too short, DC5V quickly by normal operating voltage such as 5V cannot directly decline
To 0V, the decline process of general power supply, because the device such as circuit storage capacitor is present, DC5V can drop quickly to 1V or so, so
0 is just lentamente dropped to afterwards.And the memory function such as existing latch or trigger device is when supply voltage is in 0.5V or so,
Its internal logic circuit can tanglewrack, if now fast powering-up, will produce the output of mistake, the such as positive relay of master and master
Negative relay can be closed at, and cause without preliminary filling process with regard to directly upper high pressure, so as to produce larger surge current, damage
Relay.To avoid the situation, the role of delay startup control unit 202 is exactly the time delay control in quick upward and downward electric process
System starts latching logic unit 201.
For the scheme implementation process for representing the utility model embodiment for becoming apparent from, (it is with an instantiation below
Unite quick power-on and power-off) describe in detail：
When system quickly lower electricity, DC5V is less than power-down to 2V or so, second resistance R1 with the partial pressure of 3rd resistor R2
The cut-in voltage of NMOS tube Q1, so as to the shut-off of NMOS tube Q1, OE terminal voltages are pulled to power supply voltage by first resistor R3, locate
In high level, so as to the output end of latching logic unit 201 is closed；When system in 1S fast powering-up, DC5V rapidly increases to
Normal operating voltage such as 5V, because delay startup control unit 201 is present, NMOS tube Q1 is held off, and OE is in high level, lock
The output end for depositing logical block 201 is kept closing；The driving voltage of NMOS tube Q1 is via status resistance R1 and the first electric capacity C1
The charging circuit of composition is gradually increasing, and the time of delay startup is determined by second resistance R1 with the time constant of the first electric capacity C1, excellent
Selection of land, the present embodiment second resistance R1=100K Ω, the first electric capacity C1=4.7uF.When the first electric capacity C1 charging voltages reach
During the cut-in voltage of NMOS tube Q1, NMOS tube Q1 conducting, so as to OE is in low level, it is allowed to which latching logic unit 201 is controlled defeated
Go out.
The utility model embodiment starts latching logic module by using delay startup control unit 202, delays time to control
201, solve in the quick upward and downward electric process of system, the situation of the mistake output of latching logic module 201 occurs, and improves latch
The reliability and security of circuit module 20.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although by above example
The utility model is described in further detail, but the utility model is not limited only to above example, without departing from
In the case that the utility model is conceived, more other Equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (7)
1. a kind of 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：
The embedded processing module, for enabling signal according to operation reserve output relay control signal and latch；
The latch cicuit module includes latching logic unit, is connected with the embedded processing module, for by the relay
Device control signal is transferred to drive circuit module by output end, and when receiving the latch enable signal, by the output
The relay control signal of end output is latched；
The drive circuit module, is connected with the latching logic unit, for being produced according to the relay control signal of input
Drive signal, and the relay being transferred in the executor circuit module；
The executor circuit module, is connected with the drive circuit module, for according to the drive signal control relay for receiving
Device is turned on and off, so as to controlling the operating state of motor.
2. system according to claim 1, it is characterised in that the embedded processing module is specifically in system electrification
When, executor circuit module described in output control carries out the relay control signal of preliminary filling operation and latches to enable signal, and
At the end of preliminary filling, executor circuit module described in output control carries out the relay control signal of normal operating and latches to enable letter
Number.
3. system according to claim 1, it is characterised in that the latch cicuit module also includes：
Delay startup control unit, is connected with the latching logic unit, for when the quick power-on and power-off of system, time delay output control
The latching logic unit carries out the output of normal output and enables signal；
The 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.
4. system according to claim 3, it is characterised in that the latching logic unit includes latch, the latch
Device includes：
At least one relay signal input and at least one relay signal output end, respectively with the embedded processing mould
The control output end of block is connected with the control signal of the drive circuit module, for transmission relqy control signal；
Latch and enable input, the latch with the embedded processing module enables output end and is connected, for receiving the latch
Enable signal；
Output enables input, and the output with the delay startup control unit enables output end and is connected, for receiving the output
Enable signal.
5. system according to claim 3, it is characterised in that the delay startup control unit includes：
The first resistor and NMOS tube being connected between system power supply and ground wire, the connection between the first resistor and NMOS tube
It is connected with the latching logic unit at point, for exporting the output signal is enabled；
The second resistance of series connection and the first electric capacity, it is in parallel with the first resistor and NMOS tube；
3rd resistor, it is in parallel with first electric capacity, and be connected in parallel and be a little connected with the control end of the NMOS tube, for passing through
The discharge and recharge of first electric capacity is connected in parallel potential value a little described in changing, and so as to control the NMOS tube on-off is led
Open.
6. system according to claim 3, it is characterised in that the latch is multichannel latch.
7. system according to claim 2, it is characterised in that the executor circuit module includes three relays, point
Positive relay, main negative relay and preliminary filling relay based on not, the preliminary filling relay series limiting resistor, and with the master just
Relay is in parallel；
The relay control signal of preliminary filling operation includes the positive relay cut-off signal of master, main negative relay closure signal and pre-
Fill relay closure signal；
The relay control signal of the normal operating includes the positive relay closure signal of master, main negative relay closure signal and pre-
Fill relay cut-off signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110441.8U CN206124777U (en) | 2016-10-09 | 2016-10-09 | Electric automobile executor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110441.8U CN206124777U (en) | 2016-10-09 | 2016-10-09 | Electric automobile executor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206124777U true CN206124777U (en) | 2017-04-26 |
Family
ID=58571945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621110441.8U Withdrawn - After Issue CN206124777U (en) | 2016-10-09 | 2016-10-09 | Electric automobile executor control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206124777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274496A (en) * | 2016-10-09 | 2017-01-04 | 东莞钜威动力技术有限公司 | A kind of electric automobile actuator control system |
| CN109617035A (en) * | 2019-01-03 | 2019-04-12 | 西安神西电气有限责任公司 | A kind of auxiliary actuating apparatus reducing power surge impact |
| CN109823180A (en) * | 2017-11-22 | 2019-05-31 | 上海汽车集团股份有限公司 | A kind of precharging circuit of power battery |
| CN111580422A (en) * | 2020-04-10 | 2020-08-25 | 威睿电动汽车技术(宁波)有限公司 | Relay power supply control device and method |
-
2016
- 2016-10-09 CN CN201621110441.8U patent/CN206124777U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274496A (en) * | 2016-10-09 | 2017-01-04 | 东莞钜威动力技术有限公司 | A kind of electric automobile actuator control system |
| CN106274496B (en) * | 2016-10-09 | 2019-03-26 | 东莞钜威动力技术有限公司 | A kind of electric car actuator control system |
| CN109823180A (en) * | 2017-11-22 | 2019-05-31 | 上海汽车集团股份有限公司 | A kind of precharging circuit of power battery |
| CN109617035A (en) * | 2019-01-03 | 2019-04-12 | 西安神西电气有限责任公司 | A kind of auxiliary actuating apparatus reducing power surge impact |
| CN109617035B (en) * | 2019-01-03 | 2019-10-18 | 西安神西电气有限责任公司 | A kind of auxiliary actuating apparatus reducing power surge impact |
| CN111580422A (en) * | 2020-04-10 | 2020-08-25 | 威睿电动汽车技术(宁波)有限公司 | Relay power supply control device and method |
| CN111580422B (en) * | 2020-04-10 | 2023-09-19 | 浙江吉利控股集团有限公司 | Relay power supply control device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
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Granted publication date: 20170426 Effective date of abandoning: 20190326 |