CN107199891A - Fuel cell car power-on and power-off control method, entire car controller and electric automobile - Google Patents

Fuel cell car power-on and power-off control method, entire car controller and electric automobile Download PDF

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Publication number
CN107199891A
CN107199891A CN201710369605.1A CN201710369605A CN107199891A CN 107199891 A CN107199891 A CN 107199891A CN 201710369605 A CN201710369605 A CN 201710369605A CN 107199891 A CN107199891 A CN 107199891A
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China
Prior art keywords
vcu
apu
power
electricity
control
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Granted
Application number
CN201710369605.1A
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Chinese (zh)
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CN107199891B (en
Inventor
刘成祺
李从心
易迪华
张兆龙
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Beijing Electric Vehicle Co Ltd
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Beijing Electric Vehicle Co Ltd
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Priority to CN201710369605.1A priority Critical patent/CN107199891B/en
Publication of CN107199891A publication Critical patent/CN107199891A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0053Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0084Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric 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
    • B60R16/02Electric 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
    • B60R16/023Electric 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 transmission of signals between vehicle parts or subsystems
    • B60R16/0231Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions

Abstract

The invention discloses a kind of fuel cell car power-on and power-off control method, entire car controller and automobile, wherein, the fuel cell car power-on and power-off control method includes:Electricity instruction or lower electricity instruction in acquisition;Electricity under the lower electric system of fuel cell car is controlled according to electricity in the upper electric system of the upper electricity instruction control fuel cell car or according to the lower electricity instruction.The present invention establishes the signal interaction logical method between VCU and BMS, VCU and MCU, VCU and APU, VCU and air conditioning system controller and VCU and DCDC, realize monitoring of the VCU to vehicle high pressure conditions, improve in vehicle high-pressure system APU operating efficiencies after electricity, eliminate because electricity mismatches caused electrion risk with electric sequential under APU under vehicle, improve high-pressure system security.

Description

Fuel cell car power-on and power-off control method, entire car controller and electric automobile
Technical field
The present invention relates to fuel cell car field, more particularly to it is a kind of fuel cell car power-on and power-off control method, whole Vehicle controller and electric automobile.
Background technology
Fuel cell car is mainly using hydrogen as fuel, and the electrochemical reaction combined using hydrogen with oxygen generates electricity as dynamic Power source, compared with orthodox car, fuel cell car discharge is pollution-free;Compared with pure electric automobile, the fuel load time is short, continues Sail mileage long.It is seldom currently for the power-on and power-off control method of fuel cell car, when electric on vehicle, stack temperature in APU Height directly affects electricity under the transformation efficiency of fuel cell, vehicle and is likely to cause height to press with sequential mismatch electric under APU Risk, so as to influence the security of vehicle high-pressure system.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of fuel cell car power-on and power-off control method, vehicle Controller and electric automobile, solve fuel cells convert efficiency low and due to electricity under vehicle and electric sequence problem under APU The problem of caused electrion risk.
According to one aspect of the present invention there is provided a kind of fuel cell car power-on and power-off control method, including:
Electricity instruction or lower electricity instruction in acquisition;
Controlled according to electricity in the upper electric system of the upper electricity instruction control fuel cell car or according to the lower electricity instruction It is electric under the lower electric system of fuel cell car processed.
Alternatively, the step of electricity instruction or lower electricity are instructed in acquisition includes:
Entire car controller VCU by fuel cell car without key activation system and brake pedal signal, electricity in acquisition Instruction or lower electricity instruction.
Alternatively, step electric in the upper electric system of fuel cell car is controlled to include according to the upper electricity instruction:
The VCU is instructed according to the upper electricity, when judging that the vehicle pattern of fuel cell car is in drive mode, VCU Wake up battery management system BMS, drive motor controller MCU, hydrogen system distance increasing unit APU, air conditioning system controller and direct current Switching controller DCDC;
The VCU controls the BMS, MCU, APU, air conditioning system controller, DCDC to carry out low pressure self-inspection and control height Press electric in electric system in system detectio, completion.
Alternatively, the VCU controls the BMS, MCU, APU, air conditioning system controller, the step of DCDC progress low pressure self-inspections Suddenly include:
The VCU wakes up BMS, MCU, APU, air conditioning system controller and DCDC, and the controller being waken up is by reading Corresponding low pressure controller on-board memory EEPROM mode, enters low pressure self-inspection in andante;
The VCU carries out communication packet friendship with BMS, MCU, APU, air conditioning system controller and DCDC by CAN Mutually, judge that communications of the VCU respectively between BMS, MCU, APU, air conditioning system controller and DCDC is lost with the presence or absence of signal Frame condition, and judge whether GND relay is normally off.
Alternatively, the VCU controls the BMS, MCU, APU, air conditioning system controller, the step of DCDC progress low pressure self-inspections Also include after rapid:
If normal in low pressure controller plate, CAN communication is normal and GND relay is in normal off-state, VCU control power battery cathode relay closures;
If the VCU judges that current high-pressure system has catastrophe failure, forbid high pressure in system, guiding BMS, MCU, It is electric under APU, air conditioning system controller, DCDC and own controller dormancy, whole high-pressure system.
Alternatively, the step of VCU controls high-pressure system is detected includes:
The VCU controls electrokinetic cell high pressure self-inspection, wherein, the VCU BMS judge electrokinetic cell preliminary filling relay and When positive pole relay has closure failure, then power battery cathode relay is guided to disconnect;
To preliminary filling relay, whether adhesion is detected, if there is this failure, then BMS controls positive pole relay to disconnect, VCU control negative pole relays disconnect, electricity under high-pressure system.
Alternatively, the step of VCU controls electrokinetic cell high pressure self-inspection also includes:
If electrokinetic cell preliminary filling relay and positive pole relay are without closure failure, then BMS control the preliminary filling of electrokinetic cell after Electrical equipment is closed, after the first preset duration, control positive pole relay closure, after next first preset duration, control preliminary filling after Electrical equipment disconnects.
Alternatively, the step of fuel cell car power-on and power-off control method also includes
Under upper electric system power-up state, when VCU judges to have the demand for starting hydrogen system distance increasing unit APU, APU is obtained Interior stack temperature;
When stack temperature is less than the first preset value, VCU sends pile heating signal to APU, and APU systems enter heating mould Formula, when stack temperature is higher than the second preset value, APU judges at this temperature, pile can efficiency operation, APU sends to VCU Can enabled state signal, VCU sends work to APU and enables signal, now exports power simultaneously by electrokinetic cell and pile.
Alternatively, step electric under the lower electric system of fuel cell car is controlled to include according to the lower electricity instruction:
VCU guides electricity under high-pressure system according to the lower electricity instruction, forbids direct current switching controller DCDC and air-conditioning system Controller is enabled, and controls MCU to enter zero torque mode, and BMS control anode relays disconnect, VCU control high-pressure systems Active discharge and control GND relay disconnect, carry out high-pressure system detection of power loss, VCU guiding BMS, MCU, APU, air-conditioning System controller, DCDC dormancy and VCU itself dormancy, complete electricity under high-pressure system.
Alternatively, VCU includes according to step electric under the lower electricity instruction guiding high-pressure system:
The VCU sends APU to APU and enables off signal, and VCU enters standby mode, now APU to cooling water pump and Cooling fan sends cooling instruction and pile is cooled down, when APU judges that stack temperature is less than three preset values, APU controls Pile is shut down, and sends electricity under APU off-mode signals, VCU guiding high-pressure systems to VCU.
Alternatively, also include after the step of VCU carries out high-pressure system detection of power loss according to the lower electricity instruction:
BMS, MCU, APU, air conditioning system controller and DCDC data are write memory by the VCU, and guide low pressure System dormancy.
The embodiment of the present invention additionally provides a kind of entire car controller, including:
Acquisition module, for obtaining upper electricity instruction or lower electricity instruction;
Control module, for according to it is described it is upper electricity instruction control fuel cell car upper electric system on electricity or according to institute State electricity under the lower electric system of lower electricity instruction control fuel cell car.
The embodiment of the present invention additionally provides a kind of electric automobile, including above-mentioned entire car controller.
The beneficial effect of embodiments of the invention is:
In such scheme, by set up VCU and BMS, VCU and MCU, VCU and APU, VCU and air conditioning system controller and The method of signal interaction logic between VCU and DCDC, realizes monitoring of the VCU to vehicle high pressure conditions, improves vehicle high pressure APU operating efficiencies after system electrification, are eliminated because electricity mismatches caused electrion wind with electric sequential under APU under vehicle Danger, improves high-pressure system security.
Brief description of the drawings
Fig. 1 represents the flow chart of the fuel cell car power-on and power-off control method of the embodiment of the present invention;
Fig. 2 represents the specific flow chart of fuel cell car power-on and power-off SECO of the embodiment of the present invention;
Fig. 3 represents the entire car controller schematic diagram of the embodiment of the present invention.
Embodiment
The exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in accompanying drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here Limited.Conversely it is able to be best understood from the present invention there is provided these embodiments, and can be by the scope of the present invention Complete conveys to those skilled in the art.
As shown in figure 1, The embodiment provides a kind of fuel cell car power-on and power-off control method, including:
Step 11:Electricity instruction or lower electricity instruction in acquisition.
Wherein, upper electricity instruction or lower electricity instruction are artificial by driver by keyless systems PEPS and brake pedal signal Behaviour's identification, and command information is fed back into entire car controller VCU.
Step 12:According to electricity in the upper electric system of the upper electricity instruction control fuel cell car or according to the lower electricity Electricity under the lower electric system of instruction control fuel cell car.
Wherein, after the upper electricity instruction that driver is recognized based on keyless systems PEPS and brake pedal signal, VCU is whole Under car operational mode, BMS, MCU, APU, air conditioning system controller (including motor compressor controller EAS, computer heating control are waken up Device PTC, electronic temperature control system ECC) and DCDC, and after low-pressure system self-inspection and high-pressure system detection fault-free, complete dynamic Power battery is powered, and judges that stack temperature is reached after preset value to stack temperature in APU, control APU work, it is ensured that The high efficiency of fuel cell power conversion.
Based on keyless systems PEPS and recognize driver it is lower electricity instruction after, VCU is receiving APU stopping signal, And in high-pressure system active discharge and high-pressure system detection of power loss and after carrying out archives data, guiding BMS, MCU, APU, air-conditioning System controller and DCDC dormancy, and actively lower electricity.The program is by controlling APU running statuses, it is to avoid due under vehicle Electricity mismatches caused electrion risk with electric sequential under APU.
Further, the step of electricity instruction or lower electricity are instructed in acquisition includes:
Entire car controller VCU by fuel cell car without key activation system and brake pedal signal, electricity in acquisition Instruction or lower electricity instruction.
In the embodiment, based on being obtained without key activation system and brake pedal signal after the upper electricity intention of driver, to institute There is controller to provide ON electricity, VCU is waken up by ON electricity, VCU is controlled device data initialization, and reads the number in memory According to, such as there is irresistible failure to occur in a upper power up cycle, then forbid upper high pressure, integrate on vehicle data before high pressure, If lower electric fault, then VCU will forbid high pressure in system.
Based on being obtained without key activation system under driver after electricity intention, VCU first determines whether whether APU shuts down, and is ensuring Electricity under guiding high-pressure system after APU is shut down.
Further, step electric in the upper electric system of fuel cell car is controlled to include according to the upper electricity instruction:
The VCU is instructed according to the upper electricity, when judging that the vehicle pattern of fuel cell car is in drive mode, VCU Wake up battery management system BMS, drive motor controller MCU, hydrogen system distance increasing unit APU, air conditioning system controller and direct current Switching controller DCDC;
The VCU controls the BMS, MCU, APU, air conditioning system controller, DCDC to carry out low pressure self-inspection and control height Press electric in electric system in system detectio, completion.
In the embodiment, the vehicle pattern of the fuel cell car includes:Remote mode, drive mode, trickle charge pattern, Fast mold filling formula and BootLoader patterns.
Further, the VCU controls the BMS, MCU, APU, air conditioning system controller, DCDC to carry out low pressure self-inspection Step includes:
The VCU wakes up BMS, MCU, APU, air conditioning system controller and DCDC, and the controller being waken up is by reading Corresponding low pressure controller on-board memory EEPROM mode, enters low pressure self-inspection in andante;
The VCU carries out communication packet friendship with BMS, MCU, APU, air conditioning system controller and DCDC by CAN Mutually, judge that communications of the VCU respectively between BMS, MCU, APU, air conditioning system controller and DCDC is lost with the presence or absence of signal Frame condition, and judge whether GND relay is normally off.
In the embodiment, low pressure controller carries out self-inspection, and carries out message interaction with VCU, realizes VCU to low voltage control The real-time monitoring of the working condition of device.
Further, the VCU controls the BMS, MCU, APU, air conditioning system controller, DCDC to carry out low pressure self-inspection Also include after step:
If normal in low pressure controller plate, CAN communication is normal and GND relay is in normal off-state, VCU control power battery cathode relay closures;
If the VCU judges that current high-pressure system has catastrophe failure, forbid high pressure in system, guiding BMS, MCU, It is electric under APU, air conditioning system controller, DCDC and own controller dormancy, whole high-pressure system.
In the embodiment, VCU makes respective handling in time according to the message interaction situation of low pressure controller self-inspection, it is to avoid System can not go up electricity caused by failure, effectively raise the work of APU after electricity in electrical efficiency in high-pressure system and Full Vehicle System Make efficiency.
Further, the step of VCU controls high-pressure system is detected includes:
The VCU controls electrokinetic cell high pressure self-inspection, wherein, the VCU BMS judge electrokinetic cell preliminary filling relay and When positive pole relay has closure failure, then power battery cathode relay is guided to disconnect;
To preliminary filling relay, whether adhesion is detected, if there is this failure, then BMS controls positive pole relay to disconnect, VCU control negative pole relays disconnect, electricity under high-pressure system.
In the embodiment, control high-pressure system to detect by VCU, the high-pressure system event in high pressure power up is found in time Barrier, effectively increases the upper electrical efficiency of high-pressure system, improves high-pressure system security.
Further, the step of VCU controls electrokinetic cell high pressure self-inspection also includes:
If electrokinetic cell preliminary filling relay and positive pole relay are without closure failure, then BMS control the preliminary filling of electrokinetic cell after Electrical equipment is closed, after the first preset duration, control positive pole relay closure, after next first preset duration, control preliminary filling after Electrical equipment disconnects.
In the embodiment, it is necessary to have preliminary filling loop in high-pressure system loop, to prevent the closure generation of high tension loop moment High current, burns relay.If system, which is not detected by preliminary filling relay, electricity completion, BMS in adhesion fault, high-pressure system Corresponding power, motor response accelerator pedal torque demand are provided according to driving intention.
Further, the step of fuel cell car power-on and power-off control method also includes:
Under upper electric system power-up state, when VCU judges to have the demand for starting hydrogen system distance increasing unit APU, APU is obtained Interior stack temperature;
When stack temperature is less than the first preset value, VCU sends pile heating signal to APU, and APU systems enter heating mould Formula, when stack temperature is higher than the second preset value, APU judges at this temperature, pile can efficiency operation, APU sends to VCU Can enabled state signal, VCU sends work to APU and enables signal, now exports power simultaneously by electrokinetic cell and pile.
In the embodiment, the pile heating signal can be " pile heating enabler flags position ", when battery SOC is (charged State) or battery cell operating temperature less than preset value cause electrokinetic cell power output be less than preset value when, VCU judge need Start APU, electrokinetic cell is combined power supply with APU.
Wherein, VCU sends pile heating signal, and system enters after heating mode, VCU control electrokinetic cell limit power, and Driver is sent to instrument controller ICM and reminds message, to remind vehicle to be currently in limit power rating, makes vehicle in low work( Rate downward driving, when APU judge at a temperature of higher than the second preset value, pile can efficiency operation when, limit power rating pattern Cancel, VCU sends work to APU and enables signal, power is now exported by electrokinetic cell and pile simultaneously.It is right that the program passes through Stack temperature is judged in APU, pile is worked at appropriate temperatures, improves fuel cells convert efficiency.
Further, step electric under the lower electric system of fuel cell car is controlled to include according to the lower electricity instruction:
VCU guides electricity under high-pressure system according to the lower electricity instruction, forbids direct current switching controller DCDC and air-conditioning system Controller is enabled, and controls MCU to enter zero torque mode, and BMS control anode relays disconnect, VCU control high-pressure systems Active discharge and control GND relay disconnect, carry out high-pressure system detection of power loss, VCU guiding BMS, MCU, APU, air-conditioning System controller, DCDC dormancy and VCU itself dormancy, complete electricity under high-pressure system.
In the embodiment, the electric charge in electric capacity is passed through the resistance in PTC, OBC (Vehicular charger) and MCU by high-pressure system Discharged with form of thermal energy, complete MCU active discharges.
Further, VCU includes according to step electric under the lower electricity instruction guiding high-pressure system:
The VCU sends APU shutdown to APU and enables signal, and VCU enters standby mode, now APU to cooling water pump and Cooling fan sends cooling instruction and pile is cooled down, when APU judges that stack temperature is less than three preset values, APU controls Pile is shut down, and sends electricity under APU off-mode signals, VCU guiding high-pressure systems to VCU.
In the embodiment, it can be " APU shutdown enabler flags position ", the APU shutdown shape that the APU shutdown, which enables signal, State signal can be " APU off-modes flag bit ".
VCU enters after standby mode, and cooling system is lasting is cooled down for pile for APU controls, prevents pile stopping work Without pile high temperature risk caused by cooling mechanism after work, by increasing VCU standby mode, it efficiently avoid due to power electric Pond open circuit, and APU is not powered off and in generating state, caused may be discharged dangerous.
Further, also include after the step of VCU carries out high-pressure system detection of power loss according to the lower electricity instruction:
BMS, MCU, APU, air conditioning system controller and DCDC data are write memory by the VCU, and guide low pressure System dormancy.
In the embodiment, the content of low-pressure system detection of power loss is:BMS ensure battery preliminary filling relay disconnect, positive pole after Electrical equipment disconnects, and VCU ensures that GND disconnects, after the completion of detection, to BMS, MCU, APU, air conditioning system controller and DCDC Data achieved, so as to it is electric on next controller when, the data are handled and responded.
Complete flow chart is as shown in Figure 2:
After electricity instruction is got based on PEPS and brake pedal signal, VCU is controlled device initialization, and reads Data in EEPROM, it is ensured that after fault-free, VCU judges vehicle pattern, if then VCU wakes up BMS, MCU, APU, sky to drive mode Adjusting system controller and DCDC, otherwise enter charging or remote mode;BMS, MCU, APU, air conditioning system controller and DCDC carries out low pressure self-inspection, forbids high pressure and each controller dormancy of VCU guiding in system if having catastrophe failure, if fault-free, Then VCU controls close GND relay;Battery enters horizontal high voltage self-inspection, i.e. BMS and judges preliminary filling and just after the completion of low pressure self-inspection Whether pole relay has closure failure, if so, then VCU guides GND relay to disconnect, if fault-free, BMS controls are pre- Relay closure is filled, positive pole relay is closed preset time (Tms) afterwards, preliminary filling relay breaks next preset time (Tms) afterwards Open;After high-pressure system detects preliminary filling relay without adhesion fault, electricity is completed in high-pressure system, and now VCU judges whether that needs are opened Dynamic APU joints power supply.
After system gets lower electricity instruction based on PEPS, VCU first determines whether whether APU shuts down, if APU has been shut down, VCU forbids DCDC enables and controlled motor torque is zero;MCU active discharges after BMS control positive pole relays disconnect;Electric discharge is completed VCU guides GND relay to disconnect afterwards, and now high-pressure system carries out detection of power loss, it is ensured that data are carried out after fault-free and are deposited Shelves;After VCU control low-pressure system power down, active power down, this electricity completion at present.
As shown in figure 3, the embodiment of the present invention additionally provides a kind of entire car controller, including:
Acquisition module 31, for obtaining upper electricity instruction or lower electricity instruction;
In the embodiment, upper electricity instruction or lower electricity instruction pass through driving by keyless systems PEPS and brake pedal signal The artificial behaviour's identification of member, and command information is fed back into entire car controller VCU..
Control module 32, for according to it is described it is upper electricity instruction control fuel cell car upper electric system on electricity or according to Electricity under the lower electric system of the lower electricity instruction control fuel cell car.
It should be noted that all implementations are applied to the embodiment of the entire car controller in above method embodiment In, it can also reach identical technique effect.In the embodiment, recognized and driven based on keyless systems PEPS and brake pedal signal After the upper electricity instruction for the person of sailing, VCU wakes up BMS, MCU, APU, air conditioning system controller (including electronic under vehicle operational mode Compressor controller EAS, heating controller PTC, electronic temperature control system ECC) and DCDC, and in low-pressure system self-inspection and high pressure After system detectio fault-free, complete electrokinetic cell and power, and stack temperature, which reaches default, to be judged to stack temperature in APU After value, control APU work, it is ensured that the high efficiency of fuel cell power conversion.
After the lower electricity instruction that driver is recognized based on keyless systems PEPS, VCU is receiving APU outage information, and In high-pressure system active discharge and high-pressure system detection of power loss and after carrying out archives data, guiding BMS, MCU, APU, air-conditioning system System controller and DCDC dormancy, and actively lower electricity.The program is by controlling APU running statuses, it is to avoid due to electric under vehicle Caused electrion risk is mismatched with electric sequential under APU.
The embodiment of the present invention additionally provides a kind of electric automobile, including above-mentioned entire car controller.
The embodiment of the present invention, establishes VCU and BMS, VCU and MCU, VCU and APU, VCU and air conditioning system controller And the signal interaction logical method between VCU and DCDC, the on off state based on APU, VCU is realized to vehicle high pressure conditions Monitoring, improves in vehicle high-pressure system APU operating efficiencies after electricity, eliminates due to electricity under vehicle and electric sequence problem under APU Caused electrion risk, improves high-pressure system security.
Above-described is the preferred embodiment of the present invention, it should be pointed out that come for the ordinary person of the art Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist In protection scope of the present invention.

Claims (13)

1. a kind of fuel cell car power-on and power-off control method, it is characterised in that including:
Electricity instruction or lower electricity instruction in acquisition;
According to electricity in the upper electric system of the upper electricity instruction control fuel cell car or according to the lower electricity instruction control combustion Expect electricity under the lower electric system of battery car.
2. fuel cell car power-on and power-off control method according to claim 1, it is characterised in that in acquisition electricity instruction or Include under person the step of electricity instruction:
Entire car controller VCU by fuel cell car without key activation system and brake pedal signal, electricity instruction in acquisition Or lower electricity instruction.
3. fuel cell car power-on and power-off control method according to claim 2, it is characterised in that referred to according to the upper electricity Electric step includes in the upper electric system of order control fuel cell car:
The VCU is instructed according to the upper electricity, and when judging that the vehicle pattern of fuel cell car is in drive mode, VCU wakes up Battery management system BMS, drive motor controller MCU, hydrogen system distance increasing unit APU, air conditioning system controller and direct current conversion Controller DCDC;
The VCU controls the BMS, MCU, APU, air conditioning system controller, DCDC to carry out low pressure self-inspection and control high pressure system Electricity in electric system in system detection, completion.
4. fuel cell car power-on and power-off control method according to claim 3, it is characterised in that the VCU controls institute Stating the step of BMS, MCU, APU, air conditioning system controller, DCDC carry out low pressure self-inspection includes:
The VCU wakes up BMS, MCU, APU, air conditioning system controller and DCDC, and the controller being waken up is corresponding by reading Low pressure controller on-board memory EEPROM mode, enters low pressure self-inspection in andante;
The VCU carries out communication packet by CAN with BMS, MCU, APU, air conditioning system controller and DCDC and interacted, and sentences The communications of the VCU respectively between BMS, MCU, APU, air conditioning system controller and DCDC of breaking whether there is signal frame losing feelings Condition, and judge whether GND relay is normally off.
5. fuel cell car power-on and power-off control method according to claim 4, it is characterised in that the VCU controls institute State BMS, MCU, APU, air conditioning system controller, DCDC carry out low pressure self-inspection the step of after also include:
If normal in low pressure controller plate, CAN communication is normal and GND relay is in normal off-state, VCU Control power battery cathode relay closure;
If the VCU judges that current high-pressure system has catastrophe failure, forbid high pressure in system, guiding BMS, MCU, APU, sky It is electric under adjusting system controller, DCDC and own controller dormancy, whole high-pressure system.
6. fuel cell car power-on and power-off control method according to claim 3, it is characterised in that the VCU controls are high The step of pressure system detectio, includes:
VCU controls electrokinetic cell high pressure self-inspection, wherein, the VCU judges electrokinetic cell preliminary filling relay and positive pole relay in BMS When device has closure failure, then power battery cathode relay is guided to disconnect;
To preliminary filling relay, whether adhesion is detected, if there is this failure, then BMS control positive poles relay disconnection, VCU controls Negative pole relay processed disconnects, electricity under high-pressure system.
7. fuel cell car power-on and power-off control method according to claim 6, it is characterised in that the VCU controls are dynamic The step of power battery high pressure self-inspection, also includes:
Such as the preliminary filling relay of electrokinetic cell preliminary filling relay and positive pole relay without closure failure, then BMS controls electrokinetic cell Closure, after the first preset duration, control positive pole relay is closed, after next first preset duration, controls preliminary filling relay Disconnect.
8. fuel cell car power-on and power-off control method according to claim 7, it is characterised in that also include:
Under upper electric system power-up state, when VCU judges to have the demand for starting hydrogen system distance increasing unit APU, electricity in APU is obtained Heap temperature;
When stack temperature is less than the first preset value, VCU sends pile heating signal to APU, and APU systems enter heating mode, When stack temperature be higher than the second preset value when, APU judge at this temperature, pile can efficiency operation, APU to VCU send can Enabled state signal, VCU sends work to APU and enables signal, now exports power simultaneously by electrokinetic cell and pile.
9. fuel cell car power-on and power-off control method according to claim 2, it is characterised in that referred to according to the lower electricity Electric step includes under the lower electric system of order control fuel cell car:
VCU guides electricity under high-pressure system according to the lower electricity instruction, forbids direct current switching controller DCDC and Air-condition system control Device is enabled, and controls MCU to enter zero torque mode, and BMS control anode relays disconnect, and VCU controls high-pressure system is actively Electric discharge and control GND relay disconnect, carry out high-pressure system detection of power loss, VCU guiding BMS, MCU, APU, air-conditioning system Controller, DCDC dormancy and VCU itself dormancy, complete electricity under high-pressure system.
10. fuel cell car power-on and power-off control method according to claim 9, it is characterised in that VCU is according under described Electric step includes under electricity instruction guiding high-pressure system:
The VCU sends APU to APU and enables off signal, and VCU enters standby mode, and now APU is to cooling water pump and cooling Fan sends cooling instruction and pile is cooled down, when APU judges that stack temperature is less than three preset values, APU control piles Shut down, and electricity under APU off-mode signals, VCU guiding high-pressure systems is sent to VCU.
11. fuel cell car power-on and power-off control method according to claim 9, it is characterised in that VCU is according under described Also include after the step of electricity instruction carries out high-pressure system detection of power loss:
BMS, MCU, APU, air conditioning system controller and DCDC data are write memory by the VCU, and guide low-pressure system Dormancy.
12. a kind of entire car controller, it is characterised in that including:
Acquisition module, for obtaining upper electricity instruction or lower electricity instruction;
Control module, for controlling in the upper electric system of fuel cell car electricity or according under described according to the upper electricity instruction Electricity under the lower electric system of electricity instruction control fuel cell car.
13. a kind of electric automobile, it is characterised in that including:Entire car controller as claimed in claim 12.
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