CN106114425A - A kind of mild hybrid electric vehicle method for controlling power supply - Google Patents
A kind of mild hybrid electric vehicle method for controlling power supply Download PDFInfo
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- CN106114425A CN106114425A CN201610795164.7A CN201610795164A CN106114425A CN 106114425 A CN106114425 A CN 106114425A CN 201610795164 A CN201610795164 A CN 201610795164A CN 106114425 A CN106114425 A CN 106114425A
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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
- B60R16/03—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 for supply of electrical power to vehicle subsystems or for
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The present invention relates to hybrid vehicle control field, particularly to a kind of mild hybrid electric vehicle method for controlling power supply, the method includes: after ignition lock ON gear switch powers on, initialize；After initialization terminates, detect whether to meet power-up conditions；If it is, obtain upper electrical quantity, and power on according to described upper electrical quantity；In power up, detect whether in real time to meet lower electricity condition；If it is, perform lower electric current journey.By the present invention, improve dynamic property and the comfortableness of vehicle launch.
Description
Technical field
The present invention relates to hybrid vehicle control field, particularly to a kind of mild hybrid electric vehicle power supply control side
Method.
Background technology
Automobile hybrid power technology has Brake energy recovery, accelerates the function such as power-assisted and regulation engine load, can drop
Low complete-vehicle oil consumption and discharge, thus widelyd popularize by government and Automobile Enterprises.Automobile hybrid power technology includes: slightly mix
Power technology and severe hybrid power technology, wherein light hybrid technology not only energy-saving and emission-reduction but also do not reduce course continuation mileage, and
Cost increases less, becomes one of Automobile Enterprises preferred version taking into account discharge, oil consumption and driving.Specifically, slightly mix
Close power automobile power system as it is shown in figure 1, this system includes: electromotor, hybrid dynamic system controller EMS, generating drive one
Motor BSG, dc voltage changer DCDC, normal power supplies, hybrid power power supply (be called for short mixed galvanic electricity source) and connect each equipment
Cable, this cable includes: Communication Control network cable, normal grid cable, mixed dynamic power grid cables；Further, mixed galvanic electricity source
Including: battery controller, battery bag and the relay controlled by battery controller, described relay and described battery bag string
Connection, is used for controlling battery bag and the most outwards exports electric energy, and battery controller measures battery bag voltage and mixed galvanic electricity source output terminal electricity
Press, and both voltage differences of calculating determine whether closing relay；Hybrid dynamic system controller EMS passes through the Communication Control shown in Fig. 1
Network realizes driving motor integrating BSG and the communication in mixed galvanic electricity source, typically with dc voltage changer DCDC, generating respectively
Ground, communication control net can be CAN network；Hybrid dynamic system controller EMS can obtain igniting lock status in real time, and leads to
Crossing CAN drives motor integrating BSG to communicate with mixed galvanic electricity source, dc voltage changer DCDC and generating respectively；Send out
It is typically arranged with temperature sensor in motivation, detects engine temperature in real time.
For quickly starting mild hybrid power system, and (i.e. in Fig. 1, normal grid is with mixed to avoid two set difference voltage levvls
Galvanic electricity net formed different voltages) electric equipment connect time occurred the phenomenon such as stream, overvoltage damage electric equipment, it is right to need
Hybrid power system carries out power-on and power-off management and controls, but, the mild hybrid electric vehicle of current ordinary hybrid automobile moves
Normal power supplies voltage and engine operating state are wanting in consideration when powering on by Force system (abbreviation hybrid dynamic system), open in igniting regularly
Perform to power on after pass is opened or after engine start action.
Specifically, when using such scheme, have the disadvantage in that
Open before rear engine starts in ignition switch the most regularly and carry out hybrid dynamic system and power on, when normal power supplies electricity relatively
Time low, after easily causing the relay Guan Bi in mixed galvanic electricity source, surprisingly disengage because maintaining undertension, so that hybrid dynamic system needs
Again to perform the action that powers on.
Carry out hybrid dynamic system the most after the engine started to power on, may result in hybrid dynamic system startup hysteresis, and
And using traditional approach to start electromotor, the dynamic property of vehicle, driving and discharge are the most poor.
3. dc voltage changer DCDC stops boost action, owing to relay closes after preliminary filling boosting reaches target voltage
Conjunction has certain delay, when dc voltage changer DCDC output end voltage starts to fall after rise, when relay may be caused to close two
Terminal voltage difference exceedes normal requirement scope, thus is easily caused the faults such as relay sparking, ablation.
Summary of the invention
The invention provides a kind of mild hybrid electric vehicle method for controlling power supply, with improve the dynamic property of vehicle launch with
Comfortableness, and improve hybrid vehicle startup discharge.
A kind of mild hybrid electric vehicle method for controlling power supply, described method includes:
After ignition lock ON gear switch powers on, initialize；
After initialization terminates, detect whether to meet power-up conditions；
If it is, obtain upper electrical quantity, and power on according to described upper electrical quantity；
In power up, detect whether in real time to meet lower electricity condition；
If it is, perform lower electric current journey.
Preferably, described method also includes:
First timer is set；
After initialization terminates, described first timer starts timing；
Described power-up conditions is: described first timer present timing value is less than the first setting time and ignition lock ON shelves
The not lower electricity of switch.
Preferably, described upper electrical quantity includes: engine temperature value, normal power supplies magnitude of voltage and engine speed value；
Described powering on according to described upper electrical quantity includes:
Determine whether electromotor is according to described engine speed value, engine temperature value and normal power supplies magnitude of voltage
Whether running status or current three-dimensional arteries and veins spectrum true-false value are true；
If it is satisfied, then remove described first timer, and the flow process that performs to power on；
Described three-dimensional arteries and veins spectrum true-false value is to be obtained, to determine with the demarcation of engine temperature value by described normal power supplies magnitude of voltage
When starting electromotor, whether routine supply voltage minimum is less than voltage threshold；When three-dimensional arteries and veins spectrum true-false value is true time, and expression is opened
During dynamic electromotor, routine supply voltage minimum is more than voltage threshold；Voltage threshold is that mixed galvanic electricity source repeat circuit maintains Guan Bi
Minimum voltage value.
Preferably, the flow process that powers on described in includes:
Confirm that mixed galvanic electricity source wakes up up the most with dc voltage changer by CAN；
If it is, calculate preliminary filling boost target value, and send described preliminary filling boosting target to described dc voltage changer
Value；
Send closing relay by CAN to battery controller to instruct；
It is confirmed whether to receive the information of closing relay that battery controller sends；
If it is, wake up generating up by CAN to drive motor integrating.
Preferably, the flow process that powers on described in also includes:
After battery controller receives closing relay instruction, confirm whether mixed dynamic supply voltage meets differential pressure requirements；
If it is, control relay Guan Bi, and send closing relay information.
Preferably, the flow process that powers on described in also includes:
Second timer is set；
By CAN after battery controller sends closing relay instruction, described second timer starts timing；
After described second enumerator arrived for the second setting time, if not receiving the Guan Bi that battery controller sends
Relay instructs, then remove described second timer, recalculate preliminary filling boost target value, and to described dc voltage changer
Send described preliminary filling boost target value.
Preferably, described preliminary filling boost target value is equal to mixed dynamic supply voltage and voltage drop sum；Wherein, described voltage
Pressure drop is by dc voltage changer internal capacitance and the mixed galvanic electricity net opering characteristic of electric apparatus, the relay characteristic decision of mixed galvanic electricity source.
Preferably, described lower electricity condition is: under ignition lock ON gear switch, electricity or hybrid dynamic system have lower electricity request.
Preferably, described lower electric current journey includes:
The lower electricity request of motor integrating output is driven to generating by CAN；
After the 3rd setting time, disconnect relay by CAN to battery controller output and ask；
If after the 4th setting time, the relay receiving battery controller feedback disconnects successful information, then confirm
Lower electricity completes.
Preferably, described method also includes:
After battery controller receives the disconnection relay request that hybrid dynamic system controller sends, control relay and disconnect,
And disconnect successful information to described hybrid dynamic system controller feddback relay device.
The beneficial effects of the present invention is:
The mild hybrid electric vehicle method for controlling power supply that the embodiment of the present invention provides, after ignition lock ON gear switch powers on,
In the case of meeting power-up conditions, according to powering on, parameter determination powers on opportunity, thus is guaranteeing hybrid dynamic system safety and stability
Starting hybrid dynamic system under premise as early as possible, the present invention improves dynamic property and the comfortableness of vehicle launch, and improves startup discharge.
Accompanying drawing explanation
Fig. 1 is a kind of structure chart of prior art mild or moderate hybrid power automobile power system.
Fig. 2 is a kind of flow chart of embodiment of the present invention mild hybrid electric vehicle method for controlling power supply.
Fig. 3 is a kind of flow chart of flow process of powering in the embodiment of the present invention.
Fig. 4 is the another kind of flow chart of flow process of powering in the embodiment of the present invention.
Fig. 5 is a kind of flow chart of lower electric current journey in the embodiment of the present invention.
Labelling in accompanying drawing:
EMS, hybrid dynamic system controller BSG, generating drive motor integrating DCDC, dc voltage changer
Detailed description of the invention
In order to make those skilled in the art can be further understood that inventive feature and technology contents, below in conjunction with the accompanying drawings
With embodiment, the embodiment of the present invention is elaborated.
If Fig. 2 is a kind of flow chart of embodiment of the present invention mild hybrid electric vehicle method for controlling power supply, this flow chart
Specifically include following steps:
Step 101: start.
Step 102: confirm whether ignition lock ON gear switch powers on；If it is, perform step 103；Otherwise, return performs step
Rapid 102.
It should be noted that embodiment of the present invention mild hybrid electric vehicle method for controlling power supply is mainly by hybrid dynamic system
Controller realizes actively controlling.Further, perform to power on lower electric current journey, need hybrid dynamic system controller and other mixed galvanic electricity
Net electrical equipment, such as, battery controller, dc voltage changer, generating drive motor integrating to realize information by CAN communication
Alternately.
It should be noted that in the embodiment of the present invention, mild hybrid electric vehicle system includes as shown in Figure 1: mixed galvanic electricity
Net electrical equipment and connect the cable of each electrical equipment；Mixed galvanic electricity net electrical equipment includes: electromotor, hybrid dynamic system controller EMS, generating drive
Motor integrating BSG, dc voltage changer DCDC, normal power supplies, hybrid power power supply (being called for short mixed galvanic electricity source).
Further, in the embodiment of the present invention, normal power supplies can be the accumulator of 12V-24V.
In the embodiment of the present invention, in mixed galvanic electricity source, battery bag can be the battery of 48V-120V, the electricity of mixed dynamic power source internal
It is mutual that pool controller and hybrid dynamic system controller EMS carry out information, sends the information such as battery status and relay status, accepts electricity
Pond wakes up up, dormancy and the relay Guan Bi information such as disconnection.Battery controller is measured mixed galvanic electricity source internal cell bag voltage and mixes dynamic
Power output end voltage, and calculate both voltage differences and determine whether closing relay.Mixed galvanic electricity source repeat circuit is in mixed galvanic electricity source
Between internal cell bag positive pole and mixed galvanic electricity source output terminal positive pole, it is mutual that relay Guan Bi could externally carry out electric energy.Relay
And battery controller powered by normal power supplies.
Dc voltage changer DCDC: there is the function that high pressure (such as 48V) is converted into low pressure (such as 12V)；Also have
Having the boosting of low pressure (such as 12V) preliminary filling is high pressure (such as 48V).Its internal capacitance is relied on to maintain output end voltage after preliminary filling,
Voltage pre-charge the most slowly declines after reaching desired value.DCDC controller receives hybrid dynamic system controller EMS instruction according to target electricity
Pressure carries out preliminary filling boosting.
Step 103: initialize.
Initialize it should be noted that carry out initializing mainly hybrid dynamic system controller.Further, the embodiment of the present invention
When initializing, the first timer can be set；And after initialization, the first timer starts timing.
Step 104: detect whether to meet power-up conditions；If it is, perform step 105；Otherwise, step 109 is performed.
Described power-up conditions is: described first timer present timing value is less than the first setting time and ignition lock ON shelves
The lower electricity of switch.
Specifically, the first setting time was determined by hybrid dynamic system controller performance, and such as, the first setting value is 1s.
Step 105: electrical quantity in acquisition, performs step 106.
Specifically, upper electrical quantity includes: engine temperature value, normal power supplies magnitude of voltage and engine speed value.Need
Illustrating, engine temperature value can be calculated by placing temperature sensor collection on the engine, engine speed value
Can be calculated by the speed probe collection placed on the engine；Normal power supplies magnitude of voltage is by hybrid dynamic system controller
At normal power supplies, Real-time Collection obtains.
Step 106: power on according to described upper electrical quantity.
Described powering on according to described upper electrical quantity includes:
Determine whether electromotor is according to described engine speed value, engine temperature value and normal power supplies magnitude of voltage
Whether running status or current three-dimensional arteries and veins spectrum true-false value are true；If it is satisfied, then remove described first timer, and perform
Electric current journey.Specifically, the flow process that powers in the embodiment of the present invention is described in detail below in conjunction with Fig. 3.
Specifically, confirm whether electromotor is in running status according to engine speed value；According to described engine temperature
Value and described normal power supplies magnitude of voltage determine three-dimensional arteries and veins spectrum true-false value.Specifically, described three-dimensional arteries and veins spectrum true-false value be by described often
Rule supply voltage value is demarcated with engine temperature value and is obtained, and during to determine startup electromotor, routine supply voltage minimum is the least
In voltage threshold；When three-dimensional arteries and veins spectrum true-false value is true time, and when representing startup electromotor, routine supply voltage minimum is more than voltage
Threshold value；When three-dimensional arteries and veins spectrum true-false value is fictitious time, and when representing startup electromotor, routine supply voltage minimum is less than voltage threshold.
Further, in the embodiment of the present invention, on startup, the voltage of normal power supplies can decline electromotor, and normal power supplies
Voltage specifically drop to much relevant with normal power supplies initial voltage and engine temperature, therefore, according to normal power supplies voltage
Value and engine temperature value can be demarcated and be obtained three-dimensional pulse true-false value, the true and false table of three-dimensional pulse that three-dimensional arteries and veins spectrum true-false value is corresponding
As shown in table 1.It should be noted that in the embodiment of the present invention, use the three-dimensional arteries and veins spectrum true-false value purpose of the three-dimensional true and false table of pulse
During for ensureing routine startup electromotor, routine supply voltage minimum is not less than voltage threshold U1, thus avoids engine start
Time, the disengagement of mixed galvanic electricity source repeat circuit；Voltage threshold U1 maintains the minimum input of closure state equal to mixed dynamic power supply relay
Magnitude of voltage and the voltage margin sum ensureing relay maintenance Guan Bi, further, voltage threshold U1 is also relay in mixed galvanic electricity source
Device maintains the minimum voltage value of Guan Bi, and the characteristic such as voltage threshold U1 and the coil turn of relay, spring force is relevant, such as voltage
Threshold value U1 is 7V.
Table 1
Step 107: detect whether in real time to meet lower electricity condition；If it is, perform step 108；Otherwise, execution step is returned
107。
Specifically, in the embodiment of the present invention, lower electricity condition is: under ignition lock ON gear switch, electricity or hybrid dynamic system have lower electricity to ask
Ask.If electricity under ignition lock ON gear switch, then perform lower electric current journey；Or, if hybrid dynamic system has lower electricity request, then under performing
Electric current journey.It should be noted that in the embodiment of the present invention, hybrid dynamic system has lower electricity request mainly: hybrid dynamic system controller is examined
Measure hybrid dynamic system fault or hybrid dynamic system controller detects electromotor hang-up.
Step 108: perform lower electric current journey.
Specifically, the lower electric current journey in the embodiment of the present invention is described in detail below in conjunction with Fig. 5.
Step 109: terminate.
The mild hybrid electric vehicle method for controlling power supply that the embodiment of the present invention provides, after ignition lock ON gear switch powers on,
In the case of meeting power-up conditions, according to powering on, parameter determination powers on opportunity, thus is guaranteeing hybrid dynamic system safety and stability
Starting hybrid dynamic system under premise as early as possible, the present invention improves dynamic property and the comfortableness of vehicle launch, and improves startup discharge.
Specifically, the flow process that powers in the embodiment of the present invention the most specifically may comprise steps of:
Step 201: start.
Step 202: confirm that mixed galvanic electricity source wakes up up the most with dc voltage changer by CAN；If it is, perform
Step 203；Otherwise, execution step 202 is returned.
Step 203: calculate preliminary filling boost target value, and send described preliminary filling boosting target to described dc voltage changer
Value.
Specifically, described preliminary filling boost target value is equal to mixed dynamic supply voltage and voltage drop sum, wherein, described voltage
Pressure drop is determined by dc voltage changer internal capacitance and the mixed galvanic electricity net opering characteristic of electric apparatus.Further, in the embodiment of the present invention, mainly
It is to be obtained relay in voltage decreasing rate and mixed galvanic electricity source according to after the boosting of dc voltage changer DCDC preliminary filling by internal capacitance
Device Guan Bi calculates voltage drop value time delay, and during to ensure relay actual Guan Bi, mixed dynamic supply voltage mixes galvanic electricity net with outside
Voltage difference is in claimed range, thus protects DC power converter and mixed galvanic electricity source.Further, the Guan Bi of relay postpones
Time is mainly relevant with normal power supplies voltage, relay control logic.
Step 204: send closing relay by CAN to battery controller and instruct.
It should be noted that after battery controller receives closing relay instruction, first confirm that mixed dynamic supply voltage is
No meeting differential pressure requirements, if meeting differential pressure requirements, then battery controller controls relay Guan Bi, and to hybrid dynamic system controller
Send closing relay information.
Further, in the embodiment of the present invention, battery controller confirms whether mixed dynamic supply voltage meets differential pressure requirements, mainly
Be the difference confirming mixed galvanic electricity source voltage terminal and battery bag voltage within requiring range of voltage values, if the pressure reduction that difference is excessive
Damage electric equipment.Specifically, it is desirable to range of voltage values can be ± 2V.
Step 205: be confirmed whether to receive the information of closing relay that battery controller sends；If it is, perform step
Rapid 206；Otherwise, step 203 is returned.
Step 206: wake up generating up by CAN and drive motor integrating.
Step 207: terminate.
Further, in inventive embodiments, if hybrid dynamic system controller does not receives closing of battery controller always
Close relay information, then need further to be limited, so that hybrid dynamic system controller obtains battery control between the docking time receiving
The information of device is more efficient.Specifically, as shown in Figure 4, it is the another kind of flow process of flow process of powering in the embodiment of the present invention, specifically wraps
Include following steps:
Step 301: the second timer is set.
Step 302: confirm that mixed galvanic electricity source wakes up up the most with dc voltage changer by CAN；If it is, perform
Step 303；Otherwise, execution step 302 is returned.
Step 303: calculate preliminary filling boost target value, and send described preliminary filling boosting target to described dc voltage changer
Value.
Step 304: send closing relay by CAN to battery controller and instruct.
It should be noted that after battery controller receives closing relay instruction, first confirm that mixed dynamic supply voltage is
No meeting differential pressure requirements, if meeting differential pressure requirements, then battery controller controls relay Guan Bi, and to hybrid dynamic system controller
Send closing relay information.
Further, in the embodiment of the present invention, battery controller confirms whether mixed dynamic supply voltage meets differential pressure requirements, mainly
Be the difference confirming mixed galvanic electricity source voltage terminal and battery bag voltage within requiring range of voltage values, if the pressure reduction that difference is excessive
Damage electric equipment.Specifically, it is desirable to range of voltage values can be ± 2V.
Step 305: the second timer starts timing.
Step 306: after the second timer arrived for the second setting time, is confirmed whether to receive what battery controller sent
Closing relay information；If it is, perform step 307；Otherwise, step 309 is performed.
Specifically, the second setting time can determine according to the performance of hybrid dynamic system, and such as, the second setting value is 2s.
Step 307: wake up generating up by CAN and drive motor integrating.
Step 308: terminate.
Step 309: remove the second timer, and return step 303.
The flow process that powers on of the embodiment of the present invention, accurately calculates according to dc voltage changer and mixed galvanic electricity source relay characteristic
Preliminary filling boost target value, it is ensured that the Guan Bi that relay is quick, safe, parts such as protection direct current converter and mixed galvanic electricity source etc..Nothing
Need the extra booster circuit mixed dynamic power supply relay both end voltage difference of maintenance of frequently boosting in target zone, do not increase cost and
Circuit is born, and is effectively improved the life-span of the mixed dynamic electric component such as power supply relay and battery bag, dc voltage changer.
Specifically, in the embodiment of the present invention, lower electric current journey the most specifically may comprise steps of:
Step 401: under establish by cable the beginning, perform step 402.
Step 402: drive the lower electricity request of motor integrating output to generating by CAN.
Step 403: after the 3rd setting time, disconnects relay by CAN to battery controller output and asks.
It should be noted that after battery controller receives the disconnection relay request that hybrid dynamic system controller sends, control
Relay processed disconnects, and disconnects successful information to described hybrid dynamic system controller feddback relay device.
Specifically, the 3rd setting time was determined by mixing the characteristic of generating driving motor integrating in galvanic electricity net electrical equipment, further,
Hybrid dynamic system controller drives the time size of motor integrating storage data according to generating, determines for the 3rd setting time, and such as the
Three set the time as 2s.
Step 404: after the 4th setting time, detects whether to receive the relay of battery controller feedback and disconnects and successfully believing
Breath；If it is, perform step 405；Otherwise, execution step 404 is returned.
Specifically, the 4th setting time was determined by the characteristic mixing battery controller in galvanic electricity net electrical equipment, further, and mixed dynamic system
System controller, according to the time size of battery controller storage data, determined for the 4th setting time, the such as the 4th set the time as
2s。
Step 405: lower electricity completes.
In sum, the mild hybrid electric vehicle method for controlling power supply that the embodiment of the present invention provides, according to DC voltage
Transducer and mixed galvanic electricity source relay characteristic accurately calculate preliminary filling boost target value, it is ensured that the Guan Bi that relay is quick, safe, protect
Protect the parts such as direct current converter and mixed galvanic electricity source.The mixed dynamic power supply relay two of maintenance of frequently boosting without extra booster circuit
Terminal voltage difference, in target zone, does not increase cost and circuit burden, is effectively improved mixed dynamic power supply relay and battery bag, direct current
The life-span of the electric components such as electric pressure converter.
Being described in detail the embodiment of the present invention above, the present invention is carried out by detailed description of the invention used herein
Illustrating, the explanation of above example is only intended to help to understand the system and method for the present invention；Simultaneously for this area one
As technical staff, according to the thought of the present invention, the most all will change, to sum up institute
Stating, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. a mild hybrid electric vehicle method for controlling power supply, it is characterised in that described method includes:
After ignition lock ON gear switch powers on, initialize；
After initialization terminates, detect whether to meet power-up conditions；
If it is, obtain upper electrical quantity, and power on according to described upper electrical quantity；
In power up, detect whether in real time to meet lower electricity condition；
If it is, perform lower electric current journey.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 1, it is characterised in that described method is also wrapped
Include:
First timer is set；
After initialization terminates, described first timer starts timing；
Described power-up conditions is: described first timer present timing value is less than the first setting time and ignition lock ON gear switch
Not lower electricity.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 2, it is characterised in that described upper electrical quantity
Including: engine temperature value, normal power supplies magnitude of voltage and engine speed value；
Described powering on according to described upper electrical quantity includes:
Determine whether electromotor is in operation according to described engine speed value, engine temperature value and normal power supplies magnitude of voltage
Whether state or current three-dimensional arteries and veins spectrum true-false value are true；
If it is satisfied, then remove described first timer, and the flow process that performs to power on；
Described three-dimensional arteries and veins spectrum true-false value is to be obtained, to determine startup with the demarcation of engine temperature value by described normal power supplies magnitude of voltage
During electromotor, whether routine supply voltage minimum is less than voltage threshold；When three-dimensional arteries and veins spectrum true-false value is true time, represents to start and send out
During motivation, routine supply voltage minimum is more than voltage threshold；Voltage threshold is that mixed galvanic electricity source repeat circuit maintains the minimum of Guan Bi
Magnitude of voltage.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 3, it is characterised in that described in power on flow process
Including:
Confirm that mixed galvanic electricity source wakes up up the most with dc voltage changer by CAN；
If it is, calculate preliminary filling boost target value, and send described preliminary filling boost target value to described dc voltage changer；
Send closing relay by CAN to battery controller to instruct；
It is confirmed whether to receive the information of closing relay that battery controller sends；
If it is, wake up generating up by CAN to drive motor integrating.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 4, it is characterised in that described in power on flow process
Also include:
After battery controller receives closing relay instruction, confirm whether mixed dynamic supply voltage meets differential pressure requirements；
If it is, control relay Guan Bi, and send closing relay information.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 5, it is characterised in that described in power on flow process
Also include:
Second timer is set；
By CAN after battery controller sends closing relay instruction, described second timer starts timing；
After described second enumerator arrived for the second setting time, if not receiving the closing relay that battery controller sends
Device instructs, then remove described second timer, recalculate preliminary filling boost target value, and send to described dc voltage changer
Described preliminary filling boost target value.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 6, it is characterised in that described preliminary filling boosts
Desired value is equal to mixed dynamic supply voltage and voltage drop sum；Wherein, described voltage drop is by the internal electricity of dc voltage changer
Hold and the mixed galvanic electricity net opering characteristic of electric apparatus, the relay characteristic decision of mixed galvanic electricity source.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 1, it is characterised in that described lower electricity condition
For: under ignition lock ON gear switch, electricity or hybrid dynamic system have lower electricity request.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 8, it is characterised in that described lower electric current journey
Including:
The lower electricity request of motor integrating output is driven to generating by CAN；
After the 3rd setting time, disconnect relay by CAN to battery controller output and ask；
If after the 4th setting time, the relay receiving battery controller feedback disconnects successful information, then confirm lower electricity
Complete.
Mild hybrid electric vehicle method for controlling power supply the most according to claim 9, it is characterised in that described method is also
Including:
After battery controller receives the disconnection relay request that hybrid dynamic system controller sends, control relay and disconnect, and to
Described hybrid dynamic system controller feddback relay device disconnects successful information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610795164.7A CN106114425B (en) | 2016-08-31 | 2016-08-31 | A kind of mild hybrid electric vehicle method for controlling power supply |
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| CN201610795164.7A CN106114425B (en) | 2016-08-31 | 2016-08-31 | A kind of mild hybrid electric vehicle method for controlling power supply |
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| CN106114425A true CN106114425A (en) | 2016-11-16 |
| CN106114425B CN106114425B (en) | 2018-05-04 |
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| CN201610795164.7A Active CN106114425B (en) | 2016-08-31 | 2016-08-31 | A kind of mild hybrid electric vehicle method for controlling power supply |
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