CN105711520B - The electric power management circuit and its control method of a kind of entire car controller - Google Patents
The electric power management circuit and its control method of a kind of entire car controller Download PDFInfo
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- CN105711520B CN105711520B CN201610284367.XA CN201610284367A CN105711520B CN 105711520 B CN105711520 B CN 105711520B CN 201610284367 A CN201610284367 A CN 201610284367A CN 105711520 B CN105711520 B CN 105711520B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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Abstract
The present invention relates to the electric power management circuit and its control method of auto electric control technology field, more particularly to a kind of entire car controller, the circuit includes：Ignition lock, battery, sensor；The circuit also includes：Entire car controller, the entire car controller are connected with the ignition lock, battery, CAN and sensor respectively, and the entire car controller detects the igniting lock signal when be ON signals, are sensor power supply into normal mode of operation；The igniting lock signal is detected when be OFF signal, into lower electrician's operation mode, is stopped with delay as sensor power supply；In lower electrician's operation mode, when entire car controller has detected CAN message input, the entire car controller is waken up into normal mode of operation.The power supply, power down delay and CAN message arousal function of entire car controller can be realized by the present invention.
Description
Technical field
The present invention relates to auto electric control technology field, more particularly to a kind of electric power management circuit of entire car controller and
Its control method.
Background technology
New-energy automobile is quickly grown in recent years, and the power of new-energy automobile is total compared with orthodox car power assembly system
In the whole-control system being transferred into system from engine controller using entire car controller as core.And entire car controller
Major function be to realize Driver intention recognition (vehicle accelerate, braking), electrokinetic cell high voltage connector control driving, more dynamic
Couple of force closes control (such as hybrid power system power coupling is driven) and vehicle safety and fault diagnosis.
It is instantly pure electronic and all in part with the continuous upgrading of controller of new energy automobile microcontroller chip
Hybrid power vehicle platform, 32 entire car controller microcontroller chips have become main flow, and adapt to whole-control system work(
Energy is on the increase, therefore causes the quiescent dissipation increase of entire car controller hardware.Meanwhile for entire car controller in vehicle
Need to carry out power down delay when lower electric to realize the EEPROM storage demands to significant data, existing entire car controller still uses
In the additional self-hold circuit of entire car controller 12V power ends or the mode of self-insurance held controller, also increase hardware cost while band
Carry out the miscellaneous of whole-control system hardware component.
Specifically, such as application for a patent for invention " a kind of cut-out/wake-up circuit of entire car controller " (application number:
201310105750.0) by the external low-voltage distribution controller of entire car controller power end, being gathered by low-voltage distribution controller
All kinds of power supply enable signals (ignition switch, Remote Wake Up) are powered to manage entire car controller power supply, by low-voltage distribution controller
Collection power supply forbidden energy signal (coming from entire car controller) realizes the entire car controller power down delay function at electric moment under key.Compare again
Such as a kind of utility application " remote wakening system of entire car controller " (application number：201420055625.3) by outer
The self-hold circuit connect realizes the Remote Wake Up to entire car controller with remote-monitoring controller.
Above-mentioned two scheme has as a drawback that：
1st, external controller (low-voltage distribution controller or self-hold circuit etc.) is needed to realize the power supply to entire car controller
The lower electricity of delay or arousal function, not only increase hardware cost, and some external controllers are made up of relay more, are reduced whole
The reliability and Electro Magnetic Compatibility of vehicle control.
2nd, external controller is made by gathering all kinds of hard signals (charging wake-up, Remote Wake Up, ignition lock etc.) state
Whether to give entire car controller power supply foundation, full-vehicle control low voltage wiring harness cost is added, while also increase failure path.
3rd, when entire car controller is external sensor (such as gas pedal jaw opening sensor) offer+5V power supplys, it is necessary to
Increase extra voltage stabilizing, isolation circuit etc..
The content of the invention
In view of the shortcomings of the prior art, the present invention provides the electric power management circuit inside a kind of entire car controller and its side
Method, to realize the power supply of entire car controller, power down delay and CAN arousal function.
To achieve the above object, the invention provides following technical scheme：
A kind of electric power management circuit of entire car controller, the circuit include：Ignition lock, battery, sensor；Its feature
It is, the circuit also includes：Entire car controller, the entire car controller respectively with the ignition lock, battery, CAN
And sensor connection, the entire car controller detect the igniting lock signal when being ON signals, into normal mode of operation,
Powered for the sensor；The igniting lock signal is detected when be OFF signal, into lower electrician's operation mode, with the stopping that being delayed
Powered for the sensor；In lower electrician's operation mode, when entire car controller has detected CAN message input, the vehicle control
Device processed is waken up into normal mode of operation.
The entire car controller includes：
First power-switching circuit, main controller circuit and respectively with first power-switching circuit, the master control
Device circuit processed and the CAN transceiver circuit of CAN connection；
First power-switching circuit connects with the ignition lock, the main controller circuit and the sensor respectively
Connecing, the main controller circuit is connected with the ignition lock, when the ignition lock is ON signals, the first Power convert electricity
Road is activated, and provides the first power supply for the main controller circuit and the CAN transceiver circuit, is the sensor
Second power supply is provided；After the master controller obtains first power supply, enabled according to the ignition lock ON signals
First power-switching circuit simultaneously controls the CAN transceiver circuit to enter transceiver mode, makes the first Power convert electricity
Road provides the 3rd power supply for the sensor；
When the ignition lock is OFF signal, the main controller circuit enables first power-switching circuit as institute
State main controller circuit and the CAN transceiver circuit provides first power supply, the master controller storage is related
Significant data, after the related significant data preserves, the first power-switching circuit described in forbidden energy provides the first power supply electricity
Source simultaneously controls the CAN transceiver circuit to enter sleep pattern, and first power-switching circuit is stopped；
When the ignition lock is OFF signal and the CAN transceiver circuit is in sleep pattern, if the CAN is received
Hair device circuit receives CAN message, and the CAN transceiver activates first power-switching circuit, so that first electricity
Power-switching circuit is powered for the main controller circuit.
Preferably, the entire car controller also includes：
Second source change-over circuit, from processor circuit；
The second source change-over circuit respectively with first power-switching circuit, the battery and described from
The connection of device circuit is managed, after the power supply of the battery is carried out into Power convert, is powered to be described from processor circuit；
It is described to be communicated from processor circuit by spi bus with the main controller circuit, and control described first
Power-switching circuit, the CAN transceiver circuit.
Preferably, first power-switching circuit includes：Watchdog circuit；
First power-switching circuit has：House dog enable port, feeding-dog signal input port, reset output terminal
Mouthful, the first enable port, the second enable port, the 3rd enable port, the 4th enable port, first voltage output port, second
Voltage output port, tertiary voltage output port；
The feeding-dog signal input port is connected with the main controller circuit, for enabling the reset output terminal mouth,
So that the reset output terminal mouth output reset signal；
First enable port is connected with the ignition lock, for enabling the first voltage output port, described
Two voltage output ports；
Second enable port is connected with the CAN transceiver circuit, for enable the first voltage output port,
The second voltage output port；
3rd enable port is connected with the main controller circuit, for enable the first voltage output port,
The second voltage output port；
4th enable port is connected with the main controller circuit, for enabling the tertiary voltage output port.
Preferably, the entire car controller also includes：
House dog enables circuit；
The enabled house dog enable port for being electrically connected to first power-switching circuit of the house dog and the master
Between controller circuitry, the house dog for forbidden energy or enabled first power-switching circuit.
A kind of electric power management circuit control method of entire car controller, methods described include：
When electric on vehicle, entire car controller detects that igniting lock signal is ON signals, into normal mode of operation, for sensing
Device is powered；
When electric under vehicle, entire car controller detects that igniting lock signal is OFF signal, into lower electrician's operation mode, to prolong
When stop for sensor power；
In lower electrician's operation mode, when entire car controller has detected CAN message input, the entire car controller is called out
Wake up, into normal mode of operation, powered for the sensor.
The entire car controller includes into normal mode of operation：
Internal first power-switching circuit of entire car controller activation, first power-switching circuit is to sensor output the
Two level, and internally main controller circuit and the level of CAN transceiver circuit output first, make main controller circuit according to institute
State the start-up operation of ignition lock ON signals；After the main controller circuit is started working, activate CAN transceiver and control described first
Power-switching circuit exports the 3rd level to sensor.
Preferably, the entire car controller enters lower electrician's operation mode and included：
Entire car controller triggers the main controller circuit storage operational data；
After the main controller circuit has stored operational data, the first forbidden energy letter is exported to the first power supply shifting circuit
Number, and control CAN transceiver circuit to enter sleep pattern；When the CAN transceiver circuit enters sleep pattern, to described first
Power-switching circuit exports the second forbidden energy signal；
After first power-switching circuit receives the first forbidden energy signal, stop to sensor output the 3rd
Level；
After first power-switching circuit receives the second forbidden energy signal, while stop to master controller electricity
Road exports the first level, exports second electrical level to the sensor.
Preferably, it is described in lower electrician's operation mode, when entire car controller has detected CAN message input, the vehicle
Controller is waken up, and into normal mode of operation, is included for sensor power supply：
In lower electrician's operation mode, entire car controller detects the long-range CAN message of CAN, activates CAN transceiver circuit；
First power-switching circuit described in the CAN transceiver Circuit activation；
First power-switching circuit exports second electrical level to sensor, and exports first to the main controller circuit
Level, the main controller circuit is set to start working；After the main controller circuit is started working, first power supply is controlled to turn
Change circuit and export the 3rd level to the sensor.
Preferably, methods described also includes：
After entire car controller enters normal mode of operation, battery tension is detected；
When detecting battery tension not in first threshold scope, entire car controller turns off all power supplys and exports and answer
Position；
Entire car controller records number of resets, and if number of resets reaches the first setting number, by CAN
Report battery tension failure simultaneously records DTC.
The beneficial effects of the present invention are：
The electric power management circuit and its method of entire car controller provided by the invention, ignition lock is detected using entire car controller
Signal, and normal mode of operation or lower electrician's operation mode are entered according to igniting lock signal, further, may be used also in lower electrician's operation mode
To wake up entire car controller by CAN message, so that entire car controller returns to normal mode of operation.By the invention it is possible to
Realize the power supply, power down delay and CAN message arousal function of entire car controller.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the electric power management circuit of entire car controller of the embodiment of the present invention.
Fig. 2 is a kind of circuit diagram of the first power-switching circuit in the embodiment of the present invention.
Fig. 3 is a kind of circuit diagram of CAN transceiver circuit in the embodiment of the present invention.
Fig. 4 is a kind of circuit diagram of second source change-over circuit in the embodiment of the present invention.
Fig. 5 is a kind of circuit diagram of power source preprocessing circuit in the embodiment of the present invention.
Fig. 6 is a kind of circuit diagram that house dog enables circuit in the embodiment of the present invention.
Fig. 7 is another structural representation of the electric power management circuit of entire car controller of the embodiment of the present invention.
Embodiment
In order that those skilled in the art can be further understood that the feature and technology contents of the present invention, below in conjunction with the accompanying drawings
The embodiment of the present invention is elaborated with embodiment.
It is a kind of structural representation of the electric power management circuit of entire car controller provided in an embodiment of the present invention as shown in Figure 1
Figure, the circuit include：Ignition lock, battery, sensor；The circuit also includes：Entire car controller, the entire car controller difference
It is connected with the ignition lock, battery, CAN and sensor, the entire car controller detects the igniting lock signal
For ON signals when, into normal mode of operation, powered for the sensor；The igniting lock signal is detected when being OFF signal,
Into lower electrician's operation mode, stop powering for the sensor with delay；In lower electrician's operation mode, when entire car controller detects
When having CAN message input, the entire car controller is waken up into normal mode of operation.
Specifically, the entire car controller includes：First power-switching circuit, main controller circuit and respectively with it is described
The CAN transceiver circuit of first power-switching circuit, the main controller circuit and CAN connection.
Wherein, main controller circuit is connected with the ignition lock, is turned according to the igniting lock signal to first power supply
Change circuit output control signal, the control CAN transceiver circuit enters transmitting-receiving or sleep pattern.
First power-switching circuit is connected with the ignition lock, the main controller circuit and the sensor respectively,
It is master controller electricity for receiving igniting lock signal, main controller circuit signal and the CAN transceiver circuit signal
Road, the sensor provide power supply.A kind of circuit diagram of the first power-switching circuit in the embodiment of the present invention is illustrated in figure 2,
Specifically, the first power-switching circuit shown in Fig. 2 is made up of INFINEON three terminal regulator power supply chip；Three end is steady
Depressor power supply chip includes：Watchdog circuit；And have：House dog enable port DW (in figure with the port of watchdog circuit
A3 connections), feeding-dog signal input port W (is connected) in figure with the port M5 of main controller circuit, and reset output terminal mouth R is (in figure
It is connected with the port M4 of main controller circuit), the first enable port E1 (being connected in figure with ignition lock switch signal A1), second make
Can port E2 (being connected in figure with CAN transceiver circuit forbidden energy output port A2), the 3rd enable port E3 (respectively by the in figure
The enable port M1 of one diode D5 and main controller circuit, pass through the second diode D6 and the enable port from processor circuit
S1 connections), the 4th enable port EN (is connected) in figure with the port M12 of main controller circuit, and first voltage output port Q1 is (defeated
Go out the first power supply P11), second voltage output port Q2 (the second power supply P12 of output), tertiary voltage output port Q3
(the 3rd power supply P13 of output).
Wherein, the feeding-dog signal input port W is connected with the main controller circuit, is exported for enabling described reset
Port R, so that the reset output terminal mouth R, which is main controller circuit, exports reset signal；The first enable port E1 and institute
Ignition lock connection is stated, for enabling the first voltage output port Q1, the second voltage output port Q2；Described second makes
Energy port E2 is connected with the CAN transceiver circuit, defeated for enabling the first voltage output port Q1, the second voltage
Exit port Q2；The 3rd enable port E3 is connected with the main controller circuit, for enabling the first voltage output end
Mouth Q1, the second voltage output port Q2；The 4th enable port EN is connected with the main controller circuit, for enabling
The tertiary voltage output port Q3.
Three terminal regulator power supply chip also has：Power supply supply input port I (is connected, power supply signal with power supply signal P1
P1 can be voltage of the battery after power source preprocessing circuit), reset delay port DR, Q2 voltage output monitoring port
REF2, Q3 voltage output monitoring port REF3 (during chip normal work, Q2 voltage output monitoring port REF2 and Q3 voltage outputs
Monitoring port REF3 can be dragged down by electric capacity, it is not worked, by Q2 voltage output monitoring port REF2 and master control in Fig. 2
The port M3 connections of the port M2 connections of device circuit processed, Q3 voltage output monitoring port REF3 and main controller circuit, so that main
Controller circuitry can monitor Q2, Q3 voltage), reset threshold configuration port RADJ (connect in Fig. 2 by 0 Ω first resistor R2
Ground), power supply chip reference ground port GND (referring to 13/14/15/16 pin in Fig. 2 respectively).
Three terminal regulator power supply chip is configured by Fig. 3, realizes multiple systemic-functions, specific function is as follows：
1) power source conversion function
Our department's parallel circuit supplies input port I, first voltage output port Q1 by the power supply of three terminal regulator power supply chip
Composition, 12V power supply signals P1 can be completed and be converted into stable the first power supplies of 5V P11.
And the first power supply P11 can provide power supply to the main controller circuit and sensor 5V of entire car controller and supply
Give.
2) voltage follow function
This part function is made by the first enable port E1 of three terminal regulator power supply chip, the second enable port E2, the 3rd
Energy port E3, first voltage output port Q1 and second voltage output port Q2 controls, when corresponding enable signal, (first is enabled
Port E1 or the second enable port E2 or the 3rd at least one high level of enable port E3 and the 4th enable port EN are high electricity
It is flat) it is effective when, complete the voltage follow function of the 5V reference voltages to first voltage output port Q1, be outside entire car controller
Sensor provide it is independent, with 5V output voltages the second power supply P12 of the first power supply P11 5V signal isolations and the
Three power supply P13.
3) watchdog circuit function
There is watchdog circuit in three terminal regulator power supply chip, and watchdog circuit has feeding-dog signal input port W
With reset output terminal mouth R, wherein, feeding-dog signal input port W is connected with main controller circuit respectively with reset output terminal R, main
When controller circuitry normal work, an enable signal is exported to feeding-dog signal input port W every one end time, to three
The WatchDog Timer in voltage-stablizer power supply chip is held to reset, if it exceeds the defined time does not feed dog, (typically in program fleet
When), WatchDog Timer timing exceedes, and sends a reset signal to main controller circuit by reset output terminal mouth R, makes master
Controller circuitry resets, and prevents main controller circuit from crashing, and the effect of house dog is exactly to prevent program from endless loop occurs, in other words
Program fleet.
In the embodiment of the present invention, main controller circuit can enable that circuit is enabled or forbidden energy three terminal regulator by house dog
The watchdog circuit of power supply chip, make its work or be stopped.
CAN transceiver circuit is by taking TEL1043T chips and its external tapping circuit as an example in the embodiment of the present invention, such as Fig. 3 institutes
Show.It is described in detail below how CAN transceiver circuit carries out CAN message transmitting-receiving and CAN network arousal function.
CAN transceiver circuit has：CAN message read port TXD, CAN message write port RXD, CAN transceiver grounding ports
GND, CAN transceiver kernel supply port VCC, CAN transceiver pin powered port VIO, CAN transceiver enable port EN (point
Do not pass through the three or two by 3rd resistor R4, from the control port S2 of processor circuit by the control port M9 of main controller circuit
Pole pipe D7 is controlled), outside LDO forbidden energy port INH (the forbidden energy output port A2 being connected with the first power-switching circuit), CAN
Transceiver standby port ERR_N, it is local to wake up port WAKE, CAN high ports CANH, CAN low port CANL, common mode stabilization
Output port SPLIT, CAN transceiver wake module supply port VBAT (being powered by power supply signal P1).
The mode of operation of TEL1043T chips is respectively by control port STB_N, enable port EN level logic state
Determined with kernel supply port VCC, pin powered port VIO and wake module supply port VBAT level state, specifically
Mode of operation it is as follows：
1) CAN transceiver circuit transceiver mode：Kernel supply port VCC first, pin powered port VIO offers+5V electricity
Flat, wake module supply port VBAT provides 12V Vehicular accumulator cells level (voltage of 4.5V~40V voltage ranges)；Its
It is secondary by control port STB_N, enable port EN offer+5V high level, now CAN transceiver chip enters transceiver mode, the mould
TEL1043T chips, which can normally be sent, under formula receives CAN message data, while outside LDO forbidden energy port INH is to the first power supply
The second enable port E2 output high level of change-over circuit, first voltage output port Q1 continue with second voltage output port Q2
Export stable+5V level.
2) sleep (low-power consumption) pattern：Kernel supply port VCC first, pin powered port VIO level fall to chip confession
Electric threshold level (kernel supply port VCC threshold level minimums 3V；Pin powered port VIO threshold levels minimum 0.8V) with
Under, then transponder chip enters sleep pattern, and transponder chip can not send and receive data under the pattern, only can be total to CAN
Line is monitored, while outside LDO forbidden energy port INH exports low electricity to the second enable port E2 of the first power-switching circuit
Flat, first voltage output port Q1 does not export+5V level with second voltage output port.
Further, the entire car controller also includes：Second source change-over circuit, from processor circuit.
Wherein, second source change-over circuit respectively with first power-switching circuit, the battery and it is described from
Processor circuit connects, and after the power supply of the battery is carried out into Power convert, is powered to be described from processor circuit；From processing
Device circuit is communicated by spi bus with the main controller circuit, and controls first power-switching circuit, described
CAN transceiver circuit.
Specifically, second source change-over circuit is by taking LDO chips TLE 42754D chips and its interface circuit as an example, such as Fig. 4
Shown, second source change-over circuit is separated with the first power-switching circuit, independent offer another way 5V the 3rd power supply electricity
Source P21 gives from processor circuit and powered.
12V power supply signals P1 (KL30) passes through LDO chip TLE 42754D chips, the 3rd power supply P21 of output be from
The power supply power supply of processor circuit 220 so that be in vehicle battery often electric (KL30) power supply state from processor circuit.
Second source change-over circuit has：Second source change-over circuit supply port I, the reset of second source change-over circuit
Delayed port D, the output port Q of second source change-over circuit, second source change-over circuit reset output terminal mouth RO (with from
Reason device circuit is connected for the reset from processor circuit), the grounding ports GND of second source change-over circuit.
It should be noted that second source change-over circuit is also connected by the first diode group D9 and the first power supply P11
Connect, when 12V power supply signals P1 (KL30) occurs abnormal, the first power supply P11 can be to be powered from processor circuit in time.
Further, the entire car controller also includes：Power source preprocessing circuit；The power source preprocessing circuit is connected to institute
State between battery and first power-switching circuit, the power supply signal P1 (KL30) of the stabilization for exporting 12V, including：
Anti-reverse diode D1, antisurge diode group D2, ESD electric capacity C1, storage capacitor C2, filter capacitor C3 and filter inductance L1,
As shown in Figure 5.
Wherein, anti-reverse diode D1 is used to protect battery Q1 both positive and negative polarity accident reversal connections；Antisurge diode
Group D2 is used for occurring big surge voltage progress hardware protection to battery；ESD electric capacity C1 is used for unexpected to battery Q1 pins
The electrostatic of introducing provides and lets out anti-passage；Storage capacitor C2 is used to carry out battery tension energy storage, bypass from big capacitance electric capacity
Effect, burning voltage is provided for rear end electrical appliance；Filter capacitor C3 and filter inductance L1 composition LC filter circuits, filter out high frequency and make an uproar
Sound.
It should be noted that in the present embodiment, by a 8 MCU chips and ensure that it can be normal from processor circuit
The interface circuit of work is formed, and main controller circuit is by a 16 or 32 MCU chips and ensures that it is capable of normal work
Interface circuit is formed, logical due to having from the watchdog circuit of processor circuit, main controller circuit and main controller circuit
With property, therefore the present invention no longer illustrates, consults related chip databook.
Further, the entire car controller also includes：House dog enables circuit；The house dog is enabled to be electrically connected to institute
State between the house dog enable port of the first power-switching circuit and the main controller circuit, for forbidden energy or enabled described the
The house dog of one power-switching circuit.
Our department's parallel circuit is connected with the house dog enable port DW of three terminal regulator power supply chip, passes through main controller circuit
The digital quantity level signal M11 controls NPN triode D10 that are sent of general purpose I/O whether turn on three terminal regulator controlled with this
Whether power supply chip is internally integrated house dog effective, when port A3 is in low level state, is seen in three terminal regulator power supply chip
Door dog circuit is disabled, and can carry out Bootloader programs in the state main controller circuit writes with a brush dipped in Chinese ink (because now main control
Device circuit can not send normal WDT to three terminal regulator power supply chip), if forbidden energy will not cause in this rank
Three terminal regulator power supply chip is continuous by reset output terminal mouth R due to being not received by normal WDT during section
Main controller circuit is resetted so that main controller circuit can not normally carry out Bootloader underlying programs brushes
Write.
In summary, the electric power management circuit of entire car controller provided in an embodiment of the present invention, passes through main controller circuit
With the first power-switching circuit co-ordination, when key ON is operated, powered for sensor；When key OFF is operated, vehicle control
Device processed realizes power supply power supply, power down delay function.And by CAN transceiver circuit, it can also realize entire car controller under
Electricity condition, waken up by CAN message.
Accordingly, the embodiment of the present invention additionally provides the control of the electric power management circuit system for above-mentioned entire car controller
Method processed, methods described include：
When electric on vehicle, entire car controller detects that igniting lock signal is ON signals, into normal mode of operation, for sensing
Device is powered；When electric under vehicle, entire car controller detects that igniting lock signal is OFF signal, into lower electrician's operation mode, with delay
Stop powering for sensor；In lower electrician's operation mode, when entire car controller has detected CAN message input, the vehicle control
Device processed is waken up, and into normal mode of operation, is powered for the sensor.
Specifically, the entire car controller includes into normal mode of operation：Internal first power supply of entire car controller activation
Change-over circuit, first power-switching circuit export second electrical level, and internally main controller circuit output the to sensor
One level, makes main controller circuit start working.
After the main controller circuit is started working, first power-switching circuit is controlled to the electricity of sensor output the 3rd
It is flat.
Specifically, the entire car controller enters lower electrician's operation mode and included：
Entire car controller triggers the main controller circuit storage operational data.
After the main controller circuit has stored operational data, the first forbidden energy letter is exported to the first power supply shifting circuit
Number, and control CAN transceiver circuit to enter sleep pattern.
When the CAN transceiver circuit enters sleep pattern, the second forbidden energy letter is exported to first power-switching circuit
Number.
After first power-switching circuit receives the first forbidden energy signal, stop to sensor output the 3rd
Level.
After first power-switching circuit receives the second forbidden energy signal, while stop to master controller electricity
Road exports the first level, exports second electrical level to the sensor.
Specifically, in lower electrician's operation mode, when entire car controller has detected CAN message input, the full-vehicle control
Device is waken up, and into normal mode of operation, is included for sensor power supply：
In lower electrician's operation mode, entire car controller detects the long-range CAN message of CAN, activates CAN transceiver circuit.
First power-switching circuit described in the CAN transceiver Circuit activation.
First power-switching circuit exports second electrical level to sensor, and exports first to the main controller circuit
Level, the main controller circuit is set to start working；After the main controller circuit is started working, first power supply is controlled to turn
Change circuit and export the 3rd level to the sensor.
In order to ensure that the electric power management circuit of entire car controller is working properly, the power supply of entire car controller of the embodiment of the present invention
The control method of management circuit system also includes：
After entire car controller enters vehicle mode of operation, battery tension is detected, when detecting battery tension not the
During one threshold range, entire car controller turns off all power supplys and exports and reset.
Entire car controller records number of resets, and if number of resets reaches the first setting number, by CAN
Report battery tension failure simultaneously records DTC.
Specifically, after entire car controller enters vehicle mode of operation, main controller circuit detects inside entire car controller
Battery tension, when detecting battery tension not in first threshold scope, main controller circuit turns off all power supply outputs,
And enable signal is inputted to the feeding-dog signal input port of the first power-switching circuit, so that first power-switching circuit leads to
Cross reset output terminal mouth and reset main controller circuit；And if the main controller circuit number of resets reaches the first setting time
Number, CAN transceiver circuit report battery tension failure by CAN and record DTC.
For example first threshold may range from 9-16V, certainly, above-mentioned first threshold scope can be according to current battery
Demarcation determines.Such as first setting number can be 3 times, it is described first setting number can be by different main controller circuit marks
It is fixed to determine.
Further, the control method of the electric power management circuit system of entire car controller of the embodiment of the present invention can also include：
After entire car controller enters normal mode of operation, by carrying out power supply school from processor circuit inside entire car controller
Test.
Specifically, after entire car controller enters normal mode of operation, examined inside entire car controller from processor circuit circuit
Survey the first power-switching circuit voltage.
When detecting the output level of first power-switching circuit not in Second Threshold scope, from processor circuit
Turn off all outputs；Communicated from processor circuit with main controller circuit so that main controller circuit reported by CAN it is different
Normal voltage failure simultaneously records DTC；The CAN transceiver circuit is controlled to enter sleep pattern from processor circuit.
For example Second Threshold scope is 4.9-5.1V, certainly, the Second Threshold scope can be according to the current first electricity
Power-switching circuit demarcation determines.
Further, the control method of the electric power management circuit system of entire car controller of the embodiment of the present invention can also include：
After entire car controller enters normal mode of operation, it is total to by internal main controller circuit with inside from processor circuit
With progress power supply verification.
Specifically, after entire car controller enters normal mode of operation, internal main controller circuit with from processor circuit
By spi bus carry out the verification of Q/A question and answer mechanism to the output level of the first power-switching circuit it is inconsistent when, master controller electricity
Road and simultaneously turn off all outputs from processor circuit；Main controller circuit control CAN transceiver circuit is reported by CAN
Processor abnormal failure simultaneously records DTC；Main controller circuit and enter from processor circuit co- controlling CAN transceiver circuit
Enter sleep pattern.
Specifically, Fig. 7 is another structural representation of the electric power management circuit of entire car controller of the embodiment of the present invention.Under
Face combines Fig. 7, and the electric power management circuit and its control method of entire car controller provided by the invention are explained in detail.
Specifically, four kinds of working conditions of entire car controller are as follows in the embodiment of the present invention：
1st, after upper electricity, entire car controller enters normal mode of operation
1) as shown in Fig. 2,7, when electric on vehicle, key enables igniting lock signal so that the first power-switching circuit quilt
Activation, port 11 (i.e. first voltage output port Q1 in Fig. 2) export with port 10 (i.e. second voltage output port Q2 in Fig. 2)
5V the first power supply P11 and the second power supply P12；Believe when main controller circuit exports 5V datums by port 54
Number (i.e. the 4th enable port EN is high level) enables first power-switching circuit, thus the first power-switching circuit port 20
(i.e. tertiary voltage output port Q3 in Fig. 2) voltage follow output 5V the 3rd power supply P13 are that sensor power supply (needs to illustrate
, the second power supply P12 and the 3rd power supply P13 are that three terminal regulator power supply chip builtin voltage follower follows
The independent two-way level that first power supply P11 is exported, the reason for the present embodiment uses two-way be：Can be that multiple 5V are passed
Sensor is powered).
2) as shown in Fig. 3,7, after normal upper electricity, the first power supply P11 output+5V signals supply CAN transceiver circuit
Port 23 (kernel supply port VCC), after 25 (pin powered port VIO), CAN transceiver circuit receives master controller
2 road signals of circuit, its port 26 (CAN transceiver enable port EN), 34 (CAN transceiver control port STB_N) are height
Level, now meet normal mode of operation condition, CAN transceiver circuit enters transceiver mode, starts to receive and transmit CAN message
Data.
2nd, when electric under vehicle, entire car controller enters lower electrician's operation mode
When electric under vehicle, key will light a fire lock signal forbidden energy (lock signal of lighting a fire be OFF signal), light a fire lock signal simultaneously
Gathered by main controller circuit, main controller circuit judges now to enter lower electrician's operation mode, as shown in fig. 7, master controller is electric
Road exports high level by port 51 (i.e. the enable port M1 of main controller circuit) so that (i.e. the 3rd enable port of port 6
E3) signal enables, and power-switching circuit continues normal work output P11, and main controller circuit circuit stores related significant data
To non-volatile memories (EEPROM), when main controller circuit circuit preserves this related significant data of operation to non-volatile
After storing (EEPROM), forbidden energy port 6, then low level control CAN transceiver is exported by port 62 and 66 and enters sleep pattern,
Thus transceiver exports low level forbidden energy signal by port 27 to the first power-switching circuit, and the first power-switching circuit is thus
Do not work, exported without 5V power supplys.
The specific output voltage situation of first power-switching circuit：Lock signal light a fire to cause three-terminal voltage-stabilizing after OFF signal
First enable port E1 of device power supply chip is low level；Main controller circuit controls CAN transceiver by port 62 and 66
Port 26 and 34 is low level, and transceiver enters sleep pattern (mA of normal mode of operation power consumption tens, sleep pattern small power consumption
In 2uA), now the port 27 of transceiver exports low level so that the second enable port E2 of three terminal regulator power supply chip is low
Level；Finally the port 51 due to main controller circuit and the port 94 from processor circuit export low level always so that three
Hold the 3rd enable port E3 low levels of voltage-stablizer power supply chip.
3rd, entire car controller is in lower electrician's operation mode, long-range CAN message arousal function
The mode of operation of CAN transceiver chip is by the level state of port 34 and 26 and some key point positions (chip pin
Power position, chip core power supply position, storage battery power supply position etc.) determine.When under power down low-power consumption mode, transceiver is by master controller
Circuit control port 34 and 26 enters sleep pattern and port 27 exports low level, causes transceiver port 23 and 25 not have+5V
Power supply, while CAN transceiver wake module supply port 30 (i.e. wake module supply port VBAT) is often electric by battery always
12V (KL30) (namely power supply signal P1) powers, and can be seen that the present invention wakes up port 29 by local by Fig. 3 transceiver circuit figures
(i.e. local to wake up port WAKE) shields CAN transceiver local arousal function by current-limiting resistance to GND, therefore the present invention is
The Remote Wake Up pattern of the CAN message of use.
After CAN transceiver chip enters sleep (low-power consumption) pattern, there is effective CAN message in connected CAN,
CAN transceiver chip enables the port 5 (i.e. the second enable port E2) of the first power-switching circuit by the output signal of port 27,
So that the first power-switching circuit is activated, and main controller circuit normal power supply, main controller circuit work.
4. abnormality of the entire car controller after normal mode of operation is entered is restarted
1) when main controller circuit detection P1 voltages beyond first threshold scope (normal working voltage 9~16V, under-voltage 6.5
It is judged to exceeding threshold value during 16~24V of~9V or overvoltage) when, 1. main controller circuit immediately turns off all external drive outputs；
It is (i.e. multiple by port 17 to feeding-dog signal input port W, three port voltage-stablizers that 2. main controller circuit exports an enable signal
Position output port R) main controller circuit is resetted；3. main controller circuit number of resets reaches the first setting number, (first sets
Determine number can by demarcate determine, such as first set number as 3 this) reset P1 signals it is still abnormal, main controller circuit leads to
CAN is crossed to report battery tension failure and record DTC.
2) when the level that P11/P12/P13 in the first power-switching circuit is detected from processor circuit exceeds Second Threshold
During scope (such as 4.9~5.1V) scope, 1. all external drive outputs are turned off from processor circuit；2. notify master controller electricity
Road, master controller report abnormal voltage failure by CAN and record DTC；3. pass through port 93 from processor circuit
(i.e. control port S2 in Fig. 3) exports forbidden energy signal, enters CAN transceiver circuit and only listens (Listen only) pattern, receives
Hair device port 29 drags down, and transceiver enters sleep (Sleep) pattern after a bit of time.
3) when main controller circuit verifies the first Power convert with carrying out Q/A question and answer mechanism by SPI from processor circuit
When the output level of circuit is inconsistent, judges now main controller circuit or have a failure (program from processor circuit
Run winged or hardware damage), now, 1. main controller circuit is defeated with simultaneously turning off all external drives immediately from processor circuit
Go out；2. main controller circuit reports processor abnormal failure by CAN and records DTC；3. main controller circuit passes through
Port 63 exports forbidden energy signal, exports forbidden energy signal from processor circuit by port 93, CAN transceiver, which enters, only listens
(Listen only) pattern, because transceiver port 29 drags down, transceiver enters sleep (Sleep) pattern after a bit of time,
It is electric under entire car controller.
In summary, the electric power management circuit and its control method of entire car controller provided in an embodiment of the present invention, vehicle
Controller detection igniting lock signal, and the first power-switching circuit forbidden energy in entire car controller is made according to igniting lock signal or made
Can, so that entire car controller enters normal mode of operation or lower electrician's operation mode, and in lower electrician's operation mode, acceptable quilt
CAN message wakes up, so as to return to normal mode of operation.By the present invention entire car controller can be made to realize power supply power supply or power down
Delay function, it can realize that entire car controller low-power consumption and outside are called out with power supply chip hardware configuration by CAN transceiver chip
Awake function, can provide 2 road independent power supplies by highly integrated power supply chip for sensor.
The embodiment of the present invention is described in detail above, embodiment used herein is carried out to the present invention
Illustrate, the explanation of above example is only intended to help to understand system and method for the invention；Meanwhile for the one of this area
As technical staff, according to the thought of the present invention, there will be changes in specific embodiments and applications, to sum up institute
State, this specification content should not be construed as limiting the invention.
Claims (8)
1. a kind of electric power management circuit of entire car controller, it is characterised in that the circuit includes：Ignition lock, battery, sensing
Device；Characterized in that, the circuit also includes：Entire car controller, the entire car controller respectively with the ignition lock, electric power storage
Pond, CAN and sensor connection, the entire car controller detects the igniting lock signal when being ON signals, into just
Normal mode of operation, powered for the sensor；The igniting lock signal is detected when being OFF signal, into lower electrician's operation mode,
Stop powering for the sensor with delay；In lower electrician's operation mode, when entire car controller has detected CAN message input,
The entire car controller is waken up into normal mode of operation；
The entire car controller includes：
First power-switching circuit, main controller circuit and respectively with first power-switching circuit, the master controller
Circuit and the CAN transceiver circuit of CAN connection；
First power-switching circuit is connected with the ignition lock, the main controller circuit and the sensor respectively,
The main controller circuit is connected with the ignition lock, when the ignition lock is ON signals, first power-switching circuit
It is activated, provides the first power supply for the main controller circuit and the CAN transceiver circuit, is that the sensor carries
For the second power supply；After the master controller obtains first power supply, institute is enabled according to the ignition lock ON signals
State the first power-switching circuit and control the CAN transceiver circuit to enter transceiver mode, make first power-switching circuit
The 3rd power supply is provided for the sensor；
When the ignition lock is OFF signal, it is the master that the main controller circuit, which enables first power-switching circuit,
Controller circuitry and the CAN transceiver circuit provide first power supply, and the master controller storage is related important
Data, after the related significant data preserves, the first power-switching circuit described in forbidden energy provides first power supply simultaneously
The CAN transceiver circuit is controlled to enter sleep pattern, first power-switching circuit is stopped；
When the ignition lock is OFF signal and the CAN transceiver circuit is in sleep pattern, if the CAN transceiver
Circuit receives CAN message, and the CAN transceiver activates first power-switching circuit, so that first power supply turns
Circuit is changed to power for the main controller circuit.
2. the electric power management circuit of entire car controller according to claim 1, it is characterised in that the entire car controller is also
Including：
Second source change-over circuit, from processor circuit；
The second source change-over circuit respectively with first power-switching circuit, the battery and described from processor
Circuit connects, and after the power supply of the battery is carried out into Power convert, is powered to be described from processor circuit；
It is described to be communicated from processor circuit by spi bus with the main controller circuit, and control first power supply
Change-over circuit, the CAN transceiver circuit.
3. the electric power management circuit of the entire car controller according to any one of claim 1 to 2, it is characterised in that
First power-switching circuit includes：Watchdog circuit；
First power-switching circuit has：House dog enable port, feeding-dog signal input port, reset output terminal mouth, the
One enable port, the second enable port, the 3rd enable port, the 4th enable port, first voltage output port, second voltage are defeated
Exit port, tertiary voltage output port；
The feeding-dog signal input port is connected with the main controller circuit, for enabling the reset output terminal mouth, so that
The reset output terminal mouth exports reset signal；
First enable port is connected with the ignition lock, for enabling the first voltage output port, second electricity
Press output port；
Second enable port is connected with the CAN transceiver circuit, for enabling the first voltage output port, described
Second voltage output port；
3rd enable port is connected with the main controller circuit, for enabling the first voltage output port, described
Second voltage output port；
4th enable port is connected with the main controller circuit, for enabling the tertiary voltage output port.
4. the electric power management circuit of entire car controller according to claim 3, it is characterised in that the entire car controller is also
Including：
House dog enables circuit；
The enabled house dog enable port for being electrically connected to first power-switching circuit of the house dog and the main control
Between device circuit, the house dog for forbidden energy or enabled first power-switching circuit.
5. the electric power management circuit control method of a kind of entire car controller, it is characterised in that methods described includes：
When electric on vehicle, entire car controller detects that igniting lock signal is ON signals, into normal mode of operation, is supplied for sensor
Electricity；
When electric under vehicle, entire car controller detects that igniting lock signal is OFF signal, into lower electrician's operation mode, is stopped with delay
Only powered for sensor；
In lower electrician's operation mode, when entire car controller has detected CAN message input, the entire car controller is waken up, and is entered
Enter normal mode of operation, powered for the sensor；
The entire car controller includes into normal mode of operation：
Internal first power-switching circuit of entire car controller activation, first power-switching circuit are electric to sensor output second
It is flat, and internally main controller circuit and the level of CAN transceiver circuit output first, make main controller circuit according to the point
Fire lock ON signals are started working；After the main controller circuit is started working, activate CAN transceiver and control first power supply
Change-over circuit exports the 3rd level to sensor.
6. electric power management circuit control method according to claim 5, it is characterised in that under the entire car controller enters
Electrician's operation mode includes：
Entire car controller triggers the main controller circuit storage operational data；
After the main controller circuit has stored operational data, the first forbidden energy signal is exported to the first power supply shifting circuit, and
Control CAN transceiver circuit enters sleep pattern；When the CAN transceiver circuit enters sleep pattern, to first power supply
Change-over circuit exports the second forbidden energy signal；
After first power-switching circuit receives the first forbidden energy signal, stop to the electricity of sensor output the 3rd
It is flat；
After first power-switching circuit receives the second forbidden energy signal, while stop defeated to the main controller circuit
Go out the first level, export second electrical level to the sensor.
7. electric power management circuit control method according to claim 6, it is characterised in that it is described in lower electrician's operation mode,
When entire car controller has detected CAN message input, the entire car controller is waken up, into normal mode of operation, for institute
Stating sensor power supply includes：
In lower electrician's operation mode, entire car controller detects the long-range CAN message of CAN, activates CAN transceiver circuit；
First power-switching circuit described in the CAN transceiver Circuit activation；
First power-switching circuit exports second electrical level to sensor, and electric to main controller circuit output first
It is flat, the main controller circuit is started working；After the main controller circuit is started working, first Power convert is controlled
Circuit exports the 3rd level to the sensor.
8. the electric power management circuit control method according to any one of claim 5 to 7, it is characterised in that methods described is also
Including：
After entire car controller enters normal mode of operation, battery tension is detected；
When detecting battery tension not in first threshold scope, entire car controller turns off all power supplys and exports and reset；
Entire car controller records number of resets, and if number of resets reaches the first setting number, storage is reported by CAN
Cell voltage failure simultaneously records DTC.
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| CN201610284367.XA CN105711520B (en) | 2016-04-27 | 2016-04-27 | The electric power management circuit and its control method of a kind of entire car controller |
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| CN106487897B (en) * | 2016-10-14 | 2019-12-17 | 安徽江淮汽车集团股份有限公司 | Automobile remote communication control method and system |
| CN107239428A (en) * | 2017-06-20 | 2017-10-10 | 江苏银基烯碳能源科技有限公司 | Can interface circuit |
| CN107745687B (en) * | 2017-09-21 | 2020-06-23 | 浙江吉利汽车研究院有限公司 | Multi-performance enabling logic power-on circuit of electric automobile and control method |
| CN107942807B (en) * | 2017-12-08 | 2019-08-13 | 杭州美仪自动化有限公司 | PH controller full automatic calibration device and its scaling method |
| CN108648817B (en) * | 2018-05-23 | 2021-10-22 | 深圳市理邦精密仪器股份有限公司 | Power supply control device and patient monitor thereof |
| CN109656212B (en) * | 2018-12-20 | 2020-12-01 | 北京长城华冠汽车科技股份有限公司 | Signal conditioning control method and device for BCM controller |
| CN109581941A (en) * | 2019-01-23 | 2019-04-05 | 北斗航天汽车（北京）有限公司 | Power-supply management system and method based on entire car controller |
| CN110021993A (en) * | 2019-04-30 | 2019-07-16 | 合肥巨一动力系统有限公司 | A kind of anti-down fill system of the power supply of electric machine controller |
| CN110687840A (en) * | 2019-09-25 | 2020-01-14 | 潍柴动力股份有限公司 | Flash control system and method |
| CN112622927A (en) * | 2019-10-09 | 2021-04-09 | 宁波吉利汽车研究开发有限公司 | Vehicle driving control method and device, electronic equipment and storage medium |
| CN110884449A (en) * | 2019-11-12 | 2020-03-17 | 东风商用车有限公司 | Vehicle body controller with whole vehicle ON gear power supply control and control method |
| CN111176187B (en) * | 2020-01-08 | 2022-07-12 | 合肥阳光电动力科技有限公司 | Power management system and protection method of motor controller |
| CN113799716B (en) * | 2020-06-12 | 2023-07-25 | 广州汽车集团股份有限公司 | SOC power supply system and monitoring method based on same |
| CN113002447B (en) * | 2021-03-26 | 2022-04-12 | 奇瑞新能源汽车股份有限公司 | Protection method and device for power failure of electric automobile and vehicle |
| CN113422532B (en) * | 2021-04-29 | 2022-05-20 | 上海奉天电子股份有限公司 | Variable output power vehicle-mounted power supply inverter circuit of fuel and new energy vehicle |
| CN113306396B (en) * | 2021-07-01 | 2023-08-11 | 安徽江淮汽车集团股份有限公司 | DCDC wake-up system and wake-up method for pure electric automobile |
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