CN107089148A - The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism - Google Patents
The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism Download PDFInfo
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- CN107089148A CN107089148A CN201710274527.7A CN201710274527A CN107089148A CN 107089148 A CN107089148 A CN 107089148A CN 201710274527 A CN201710274527 A CN 201710274527A CN 107089148 A CN107089148 A CN 107089148A
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
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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
- B60L50/30—Electric propulsion with power supplied within the vehicle using propulsion power stored mechanically, e.g. in fly-wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H33/00—Gearings based on repeated accumulation and delivery of energy
- F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
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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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- 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
- Y02T10/72—Electric energy management in electromobility
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- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism, belongs to hybrid vehicle technology field.Solve the problem of existing fuel cell hybrid system battery is due to capacity fade problem caused by frequent discharge and recharge and low braking energy utilization rate.The effective dynamical system that reclaims of the invention is in brake or the braking energy in decelerating phase；In addition, by control electrokinetic cell can be made to be worked in lower frequency region to driving stage power distribution using low pass filter, electrokinetic cell capacity attenuation degree can be effectively reduced.The present invention is distributed suitable for the energy storage of electric automobile with energy.
Description
Technical field
The invention belongs to fuel cell car system design and control technology field.
Background technology
Fuel cell hybrid car is considered to have the new-energy automobile dynamical system of broad prospect of application, in warp
There is larger technical advantage in terms of Ji type and discharge.Fuel cell hybrid system is pollution-free with its, control operation side
Just, the technology such as security reliability height has a little obtained extensive concern.
Because there is capacity fade problem in the electrokinetic cell of fuel cell hybrid system so that the pure electricity of dynamical system is continuous
Sail mileage to be limited, and then system operation cost is gradually increased；In addition, when power system operation is in braking or decelerating phase
There is braking energy, current braking energy is only reclaimed by electrokinetic cell, when battery remaining power reaches the upper limit, braking energy is needed
It is lost by mechanical device, causes capacity usage ratio to decline.
The content of the invention
The present invention be in order to solve existing fuel cell hybrid system battery due to caused by frequent discharge and recharge hold
A kind of the problem of measuring attenuation problem and low braking energy utilization rate, it is proposed that the fuel cell mixing of flexible stored energy mechanism
The energy distributing method of dynamical system.
The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism of the present invention, is based on
The fuel cell hybrid system of flexible stored energy mechanism realizes that the fuel cell of the flexible stored energy mechanism is mixed
Dynamical system includes fuel cell system 1, fuel cell controller 2, unidirectional DC/DC converters 3, electrokinetic cell 4, battery management
System 5, inverter 6, motor 7, clutch 8, elastic energy storage mechanism 9, speed changer 10 and full-vehicle control unit 11；
The current signal output end of fuel cell system 1 is connected with the current signal input of unidirectional DC/DC converters 3,
The current output terminal of unidirectional DC/DC converters 3 is connected with the current signal input of inverter 6, and the current signal of inverter 6 is defeated
Enter end to be connected with the current signal output end of electrokinetic cell 4 simultaneously；
The current signal output end of inverter 6 connects the driving signal input of motor 7, the output of motor 7
The input shaft of axle and speed changer 10 is coaxially connected, and speed changer 10 drives automotive wheel by differential mechanism 12；
The bearing of elastic energy storage mechanism 9 is connected by clutch 8 with speed changer 10, full-vehicle control unit 11 control from
The closure or openness of clutch 8；The charge and discharge control signal output part of full-vehicle control unit 11 connects filling for fuel cell controller 2
Discharge control signal input, the battery status signal input of full-vehicle control unit 11 connects the electricity of fuel cell controller 2
Pond status signal output；The discharge power control signal output of fuel cell controller 2 connects putting for fuel cell system 1
Electrical power control signal input, the fuel cell condition signal input part connection fuel cell system 1 of fuel cell controller 2
Battery status signal output end；
The changeover control signal output of full-vehicle control unit 11 is connected unidirectional DC/DC converters 3 with transition status input
Changeover control signal input be connected with transition status output end；
The discharge power control of the discharge power control signal output connection battery management system 5 of full-vehicle control unit 11
Signal input part, the electrokinetic cell state signal input terminal of full-vehicle control unit 11 connects the electrokinetic cell of battery management system 5
Status signal output；The electric energy output control signal output end connection electrokinetic cell 4 output switch control of battery management system 5
Signal input part, the battery status signal input connection energy state output end of electrokinetic cell 4 of battery management system 5；
The motor status signal input of rotating speed and dtc signal output end connection the full-vehicle control unit 11 of motor 7
End；
The inverter changeover control signal output end of full-vehicle control unit 11 connects the electric current changeover control signal of inverter 6
Input；
The output of stored energy mechanism power output control signal and the stored energy mechanism energy storage state input of full-vehicle control unit 11
Connect output control input and the energy storage state output end of elastic energy storage mechanism 9；
The transmission state input of full-vehicle control unit 11 is connected speed changer 10 with variator power control signal output
Status signal output and power control signal input；
Full-vehicle control unit 11 and fuel cell controller 2, unidirectional DC/DC converters 3, battery management system 5, inverter
6th, connected between motor 7, elastic energy storage mechanism 9 and speed changer 10 by CAN；
The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism is concretely comprised the following steps：
Step 1: obtaining the energy storage state Q of elastic energy storage mechanism 9 using full-vehicle control unit 11, passing through battery management system
System 5 obtains the dump energy of electrokinetic cell 4, the working condition of fuel cell system 1 is obtained by fuel cell controller 2, is led to
Cross onboard sensor and obtain speed, gas pedal aperture and brake pedal opening amount signal；Full-vehicle control unit 11 utilizes speed, oil
Door pedal aperture and brake pedal opening amount signal calculate automobile dynamic system demand general power Pdem, wherein, Q is elastic energy storage machine
The ratio between the real-time energy storage value of structure and maximum energy storage value；
Step 2: calculating the automobile dynamic system demand general power P obtained using step onedem, with reference to electrokinetic cell 4
The energy storage state of dump energy and elastic energy storage mechanism 9, full-vehicle control unit 11 is used based on frequency domain allocation algorithm respectively to combustion
Expect battery controller 2, battery management system 5 and the transmit power output control signal of elastic energy storage mechanism 9；
Step 3: fuel cell controller 2 sends control signal to fuel cell system 1, control fuel cell system 1 is defeated
Go out electric energy；Battery management system 5 sends output power signal, the output electric energy of electrokinetic cell 4 to electrokinetic cell 4；Elasticity storage
Can the reception control signal of mechanism 9 and power output signal；Realize the fuel cell hybrid system to flexible stored energy mechanism
The energy hole of system.
Further, the full-vehicle control unit 11 described in step 2 is using electric to fuel respectively based on frequency domain allocation algorithm
The specific method of pool controller 2, battery management system 5 and the transmit power output control signal of elastic energy storage mechanism 9 is：
Step 2 one, judge automobile dynamic system demand general power PdemWhether 0 is more than, if so, step 2 two is then performed,
Otherwise step 2 three is performed；
Whether step 2 two, judgement electrokinetic cell dump energy are less than the minimum threshold values a of battery electric quantity, if so, then performing
Step 2 four, otherwise performs step 2 five；Wherein, a is the 20% of the maximum electricity of electrokinetic cell,
Whether step 2 three, the energy storage state Q of judgement elastic energy storage mechanism 9 are less than or equal to 1, if so, then full-vehicle control
The control clutch 8 of unit 11 is closed, and elastic energy storage mechanism 9 reclaims the braking energy of automobile, and otherwise, full-vehicle control unit 11 is controlled
Clutch 8 is separated, and the braking energy of automobile is discharged by mechanical mechanism；
Step 2 four, using low pass filter to automobile dynamic system demand general power PdemIt is filtered, it is low-pass filtered
The low frequency power signal exported after device is sent to power battery management system 5, the control electrokinetic cell 4 of power battery management system 5
The output power signal equal with low frequency power, recycles automobile dynamic system demand general power PdemSubtract low-pass filtered device
The low frequency power exported afterwards, obtains the high frequency power signals of automobile dynamic system demand, the control clutch 8 of full-vehicle control unit 11
Closure, control elastic energy storage mechanism 9 exports the high frequency power of automobile dynamic system demand；
Step 2 five, full-vehicle control unit 11 control fuel cell system 1 to export constant work(by fuel cell controller 2
Rate is that electrokinetic cell 4 charges.
The fuel cell hybrid system of the flexible stored energy mechanism of the present invention, in original fuel cell hybrid
Elastic energy storage mechanism is added in system-based, is switched over according to the control method of the present invention, can effectively reclaim power
System is in brake or the braking energy in decelerating phase；In addition, can be passed through to driving stage power distribution using low pass filter
Control makes electrokinetic cell be worked in lower frequency region, can effectively reduce electrokinetic cell capacity attenuation degree, realizes that fuel cell is mixed
Close the optimum control of power vehicle.
Brief description of the drawings
Fig. 1 is the principle frame of the fuel cell hybrid system of the present invention based on flexible stored energy mechanism
Figure；
Fig. 2 is the structural representation of speed change gear；
Fig. 3 is the structural representation of elastic accumulator；
Fig. 4 is pulling force sensor mounting structure schematic diagram；
Fig. 5 is the structural representation of brake；
Fig. 6 is the method for the invention flow chart.
Embodiment
Embodiment one, illustrate present embodiment, the flexible storage described in present embodiment with reference to Fig. 1 and Fig. 6
The energy distributing method of the fuel cell hybrid system of energy mechanism, the fuel cell mixing based on flexible stored energy mechanism
Dynamical system realizes, the fuel cell hybrid system of the flexible stored energy mechanism it include fuel cell system 1, combustion
Expect battery controller 2, unidirectional DC/DC converters 3, electrokinetic cell 4, battery management system 5, inverter 6, motor 7, clutch
Device 8, elastic energy storage mechanism 9, speed changer 10 and full-vehicle control unit 11；
The current signal output end of fuel cell system 1 is connected with the current signal input of unidirectional DC/DC converters 3,
The current output terminal of unidirectional DC/DC converters 3 is connected with the current signal input of inverter 6, and the current signal of inverter 6 is defeated
Enter end to be connected with the current signal output end of electrokinetic cell 4 simultaneously；
The current signal output end of inverter 6 connects the driving signal input of motor 7, the output of motor 7
The input shaft of axle and speed changer 10 is coaxially connected, and speed changer 10 drives automotive wheel by differential mechanism 12；
The bearing of elastic energy storage mechanism 9 is connected by clutch 8 with speed changer 10, full-vehicle control unit 11 control from
The closure or openness of clutch 8；The charge and discharge control signal output part of full-vehicle control unit 11 connects filling for fuel cell controller 2
Discharge control signal input, the battery status signal input of full-vehicle control unit 11 connects the electricity of fuel cell controller 2
Pond status signal output；The discharge power control signal output of fuel cell controller 2 connects putting for fuel cell system 1
Electrical power control signal input, the fuel cell condition signal input part connection fuel cell system 1 of fuel cell controller 2
Battery status signal output end；
The changeover control signal output of full-vehicle control unit 11 is connected unidirectional DC/DC converters 3 with transition status input
Changeover control signal input be connected with transition status output end；
The discharge power control of the discharge power control signal output connection battery management system 5 of full-vehicle control unit 11
Signal input part, the electrokinetic cell state signal input terminal of full-vehicle control unit 11 connects the electrokinetic cell of battery management system 5
Status signal output；The electric energy output control signal output end connection electrokinetic cell 4 output switch control of battery management system 5
Signal input part, the battery status signal input connection energy state output end of electrokinetic cell 4 of battery management system 5；
The motor status signal input of rotating speed and dtc signal output end connection the full-vehicle control unit 11 of motor 7
End；
The inverter changeover control signal output end of full-vehicle control unit 11 connects the electric current changeover control signal of inverter 6
Input；
The output of stored energy mechanism power output control signal and the stored energy mechanism energy storage state input of full-vehicle control unit 11
Connect output control input and the energy storage state output end of elastic energy storage mechanism 9；
The transmission state input of full-vehicle control unit 11 is connected speed changer 10 with variator power control signal output
Status signal output and power control signal input；
Full-vehicle control unit 11 and fuel cell controller 2, unidirectional DC/DC converters 3, battery management system 5, inverter
6th, connected between motor 7, elastic energy storage mechanism 9 and speed changer 10 by CAN；
The energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism is concretely comprised the following steps：
Step 1: obtaining the energy storage state Q of elastic energy storage mechanism 9 using full-vehicle control unit 11, passing through battery management system
System 5 obtains the dump energy of electrokinetic cell 4, the working condition of fuel cell system 1 is obtained by fuel cell controller 2, is led to
Cross onboard sensor and obtain speed, gas pedal aperture and brake pedal opening amount signal；Full-vehicle control unit 11 utilizes speed, oil
Door pedal aperture and brake pedal opening amount signal calculate automobile dynamic system demand general power Pdem, wherein, Q is elastic energy storage machine
The ratio between the real-time energy storage value of structure and maximum energy storage value；
Step 2: calculating the automobile dynamic system demand general power P obtained using step onedem, with reference to electrokinetic cell 4
The energy storage state of dump energy and elastic energy storage mechanism 9, full-vehicle control unit 11 is used based on frequency domain allocation algorithm respectively to combustion
Expect battery controller 2, battery management system 5 and the transmit power output control signal of elastic energy storage mechanism 9；
Step 3: fuel cell controller 2 sends control signal to fuel cell system 1, control fuel cell system 1 is defeated
Go out electric energy；Battery management system 5 sends output power signal, the output electric energy of electrokinetic cell 4 to electrokinetic cell 4；Elasticity storage
Can the reception control signal of mechanism 9 and power output signal；Realize the fuel cell hybrid system to flexible stored energy mechanism
The energy hole of system.
Embodiment two, illustrate present embodiment with reference to Fig. 2, present embodiment is to described in embodiment one
The energy distributing method of fuel cell hybrid system of flexible stored energy mechanism further illustrate, elastic energy storage machine
Structure 9 includes speed change gear and elastic energy storage case；The speed change gear includes casing, power transmission shaft 911, an energy storage gear
912nd, release can gear 913, No. two power transmission shafts 914, switching tube group 916, electromagnet 917, permanent magnet 918, change
Gear fork 919 and idler gear 920；
Energy storage gear 912 and release can gear 913 be socketed in the upper of power transmission shaft 911, and energy storage gear 912 is located at and released
The upside of energy gear 913, idler gear 920 is that two gears compositions are socketed with a bearing, and two gears are located at respectively
The upper/lower terminal of the bearing；The side of energy storage gear 912 and the gear of idler gear 920 is connected, idler gear
The opposite side of 920 gears is located in the plug of selector fork 919, and a permanent magnet 918 is fixed on the plug base of selector fork 919
Lower end, electromagnet 917 is located at the underface of a permanent magnet 918, and the positive-negative power terminals of an electromagnet 917 lead to
A switching tube group 916 is crossed to be connected with the positive and negative electrode of automobile batteries；
The lower gear of idler gear 920 is connected with No. two power transmission shafts 914 by engaged gears；Energy storage gear 912, release can tooth
Wheel 913 and idler gear 920 are respectively positioned in a casing；The top of a number power transmission shaft 911 passes through a casing and No. two clutches
Device 8 is coaxially connected；No. two lower ends of power transmission shaft 914 are connected through a casing with the coaxial bearing of elastic energy storage case.
Embodiment three, illustrate present embodiment with reference to Fig. 3 and Fig. 4, present embodiment is to embodiment
Further illustrating for the energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism described in one, it is elastic
Energy-storage box includes No. three power transmission shafts 921, energy storage whorl reed 922, brake 923, No. two casings 924 and pulling force sensor 925；
No. three power transmission shafts 921 are located at the middle part of No. two casings 924, are horizontally through No. two casings 924, energy storage whorl reed 922, system
Dynamic device 923 and pulling force sensor 925 are arranged in No. two casings 924, and energy storage whorl reed 922 and brake 923 are set in three
On number power transmission shaft 921, the inner of energy storage whorl reed 922 is fixedly connected with the side wall of No. three power transmission shafts 921, and pulling force sensor 925 is solid
The outer end of energy storage whorl reed 922 is scheduled on, and energy storage whorl reed 922 and brake 923 are not contacted.
Embodiment four, illustrate present embodiment with reference to Fig. 5, present embodiment is to described in embodiment one
The energy distributing method of fuel cell hybrid system of flexible stored energy mechanism further illustrate, brake 923
Including fixed spring 9231, brake bars 9232, spring clip 9233, braked wheel 9234, No. four power transmission shafts 9235, No. two switching tubes
Group 9237, No. two permanent magnets 9238, No. two electromagnet 9239 and No. three casings；
Braked wheel 9234 is set on No. four power transmission shafts 9235, and the top edge of braked wheel 9234 is provided with four " U " types at equal intervals
Groove, four " U " types groove is used to insert brake bars 9232, and the end of the brake bars 9232 is embedded with No. two permanent magnets
9238, No. two permanent magnets 9238 are connected on the vertical clapboard in No. three casings, the inner left wall of No. three casings with
It is relative on the inwall up and down of No. three casings to be provided with spring clip 9233, the spring clip provided with fixed spring 9231 between dividing plate
Piece 9233 is arranged on the right side of dividing plate, and No. two permanent magnets 9238 are oppositely arranged with No. two electromagnet 9239, No. two electromagnet
9239 are arranged between the inner left wall of No. three casings and dividing plate, and the positive-negative power terminals of No. two electromagnet 9239 pass through No. two
Switching tube group 9237 is connected with the positive and negative electrode of automobile batteries, and braked wheel 9234 is arranged on the right side inwall and dividing plate of No. three casings
Between.
The present invention realizes mechanical couplings with elastic energy storage system using engine by torsion coupler, coordinates energy distribution
Method, the two can provide energy to vehicle in different combinations.Torsion coupler is engaged by two curved surface bevel gears
Form, it is possible to achieve the torque coupling on axially different.Elastic energy storage system is even formed by elastic energy storage case, gear-box axle；Institute
Transmission system is stated even to be formed with differential axle by speed-changing gear box.Elastic energy storage case is by energy storage whorl reed, bearing, brake, pulling force
Sensor is constituted with casing；Whirlpool spring one end is joined directly together with bearing, and the other end is connected with pulling force sensor；The rotation of bearing drives
Whirlpool spring rotation deformation carries out storage energy, and the shape of whirlpool spring recovers the rotation with dynamic bearing and carries out energy release；Pulling force sensor
The size for sensing pulling force reacts the energy state of energy storage whorl reed；Brake is connected with casing, and brake plays braking to bearing and made
With.The speed change gear of elastic energy storage system by casing, energy storage gear, release can gear, idler gear, magnet, electromagnet constitute, in
Between gear by it is mobile respectively can with energy storage gear and release can gear engagement be reached for whirlpool spring energy storage and release the purpose of energy；It is middle
Gear be moved through selector fork stir completion；One end fixed magnet of selector fork, is completed by the attraction and repulsion of electromagnet
The movement of idler gear；Two leads of electromagnet are directly connected by two groups of switching tubes with automobile storage battery, and battery passes through
The break-make of switching tube to electromagnet provide different directions electric current so that the pole pair magnet for producing different directions attracted or
Repel.The brake of elastic energy storage case is opened by braked wheel, electromagnet, magnet, brake bars, fixed spring, spring clip and two groups
Close pipe to constitute, braked wheel connects with bearing axle, and recessing on braked wheel, be easy to brake bars insertion to play braking action；Brake bars
End is embedded in one block of permanent magnet, and the movement of brake bars produces the attraction to permanent magnet by the electric current of electromagnetism Tie Tong different directions
Power or repulsive force are realized that the position of brake bars is determined by fixing spring and spring clip；Two leads of electromagnet pass through two
Group switching tube is directly connected with automobile batteries, and battery provides electromagnet the electric current of different directions by the break-make of switching tube, by
In the presence of spring clip and fixed spring, the electric current that battery need to only lead to a bit of time just can be controlled to brake bars
System.
Embodiment five, present embodiment are the combustions to the flexible stored energy mechanism described in embodiment one
Expect that the energy distributing method of cell hybrid power system further illustrates that the full-vehicle control unit 11 described in step 2 uses
It is defeated to fuel cell controller 2, battery management system 5 and the transmit power of elastic energy storage mechanism 9 respectively based on frequency domain allocation algorithm
The specific method for going out control signal is：
Step 2 one, judge automobile dynamic system demand general power PdemWhether 0 is more than, if so, step 2 two is then performed,
Otherwise step 2 three is performed；
Whether step 2 two, judgement electrokinetic cell dump energy are less than the minimum threshold values a of battery electric quantity, if so, then performing
Step 2 four, otherwise performs step 2 five；Wherein, a is the 20% of the maximum electricity of electrokinetic cell,
Whether step 2 three, the energy storage state Q of judgement elastic energy storage mechanism 9 are less than or equal to 1, if so, then full-vehicle control
The control clutch 8 of unit 11 is closed, and elastic energy storage mechanism 9 reclaims the braking energy of automobile, and otherwise, full-vehicle control unit 11 is controlled
Clutch 8 is separated, and the braking energy of automobile is discharged by mechanical mechanism；
Step 2 four, using low pass filter to automobile dynamic system demand general power PdemIt is filtered, it is low-pass filtered
The low frequency power signal exported after device is sent to power battery management system 5, the control electrokinetic cell 4 of power battery management system 5
The output power signal equal with low frequency power, recycles automobile dynamic system demand general power PdemSubtract low-pass filtered device
The low frequency power exported afterwards, obtains the high frequency power signals of automobile dynamic system demand, the control clutch 8 of full-vehicle control unit 11
Closure, control elastic energy storage mechanism 9 exports the high frequency power of automobile dynamic system demand；
Step 2 five, full-vehicle control unit 11 control fuel cell system 1 to export constant work(by fuel cell controller 2
Rate is that electrokinetic cell 4 charges.
Embodiment six, present embodiment are the combustions to the flexible stored energy mechanism described in embodiment five
Expect that the energy distributing method of cell hybrid power system is further illustrated, the cut-off frequency of low pass filter is 0.016Hz.
Embodiment seven, present embodiment are the combustions to the flexible stored energy mechanism described in embodiment five
Expect that the energy distributing method of cell hybrid power system further illustrates that the full-vehicle control unit 11 described in step one utilizes car
Speed, gas pedal aperture and brake pedal opening amount signal calculate automobile dynamic system demand general power PdemSpecific method be：It is logical
Cross formula：
T=Tmax·α (1)
Pdem=T ω (2)
Calculate and obtain, in formula, T is motor target drive torque；TmaxFor motor maximum driving torque；α is oil
Door pedal aperture or brake pedal aperture；ω is motor actual speed, i.e. vehicle speed value.
Claims (7)
1. the energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism, based on flexible energy storage machine
The fuel cell hybrid system of structure realizes that the fuel cell hybrid system of the flexible stored energy mechanism includes combustion
Expect battery system (1), fuel cell controller (2), unidirectional DC/DC converters (3), electrokinetic cell (4), battery management system
(5), inverter (6), motor (7), clutch (8), elastic energy storage mechanism (9), speed changer (10) and full-vehicle control unit
(11)；
The current signal output end of fuel cell system (1) is connected with the current signal input of unidirectional DC/DC converters (3),
The current output terminal of unidirectional DC/DC converters (3) is connected with the current signal input of inverter (6), the electric current of inverter (6)
Signal input part is connected with the current signal output end of electrokinetic cell (4) simultaneously；
Inverter (6) current signal output end connection motor (7) driving signal input, motor (7) it is defeated
Shaft and the input shaft of speed changer (10) are coaxially connected, and speed changer (10) drives automotive wheel by differential mechanism (12)；
The bearing of elastic energy storage mechanism (9) is connected by clutch (8) and speed changer (10), full-vehicle control unit (11) control
The closure or openness of clutch (8) processed；The charge and discharge control signal output part connection fuel cell control of full-vehicle control unit (11)
The charge and discharge control signal input part of device (2) processed, the battery status signal input connection fuel electricity of full-vehicle control unit (11)
The battery status signal output end of pool controller (2)；The discharge power control signal output connection of fuel cell controller (2)
The discharge power control signal input of fuel cell system (1), the fuel cell condition signal of fuel cell controller (2) is defeated
Enter the battery status signal output end of end connection fuel cell system (1)；
The changeover control signal output of full-vehicle control unit (11) is connected unidirectional DC/DC converters (3) with transition status input
Changeover control signal input be connected with transition status output end；
The discharge power control of the discharge power control signal output connection battery management system (5) of full-vehicle control unit (11)
Signal input part, the power of the electrokinetic cell state signal input terminal connection battery management system (5) of full-vehicle control unit (11)
Battery status signal output end；Electric energy output control signal output end connection electrokinetic cell (4) output of battery management system (5)
Switch controlling signal input, battery status signal input connection electrokinetic cell (4) energy state of battery management system (5)
Output end；
The motor status signal input of rotating speed and dtc signal output end the connection full-vehicle control unit (11) of motor (7)
End；
The electric current changeover control signal of the inverter changeover control signal output end connection inverter (6) of full-vehicle control unit (11)
Input；
The output of stored energy mechanism power output control signal and the stored energy mechanism energy storage state input of full-vehicle control unit (11) connect
Connect output control input and the energy storage state output end of elastic energy storage mechanism (9)；
The transmission state input of full-vehicle control unit (11) is connected speed changer (10) with variator power control signal output
Status signal output and power control signal input；
It is full-vehicle control unit (11) and fuel cell controller (2), unidirectional DC/DC converters (3), battery management system (5), inverse
Become between device (6), motor (7), elastic energy storage mechanism (9) and speed changer (10) and connected by CAN；
Characterized in that, the specific steps of the energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism
For：
Step 1: obtaining the energy storage state Q of elastic energy storage mechanism (9) using full-vehicle control unit (11), passing through battery management system
System (5) obtains the dump energy of electrokinetic cell (4), the work of fuel cell system (1) is obtained by fuel cell controller (2)
State, pass through onboard sensor and obtain speed, gas pedal aperture and brake pedal opening amount signal；Full-vehicle control unit (11) profit
Automobile dynamic system demand general power P is calculated with speed, gas pedal aperture and brake pedal opening amount signaldem, wherein, Q is bullet
Property the ratio between the real-time energy storage value of stored energy mechanism and maximum energy storage value；
Step 2: calculating the automobile dynamic system demand general power P obtained using step onedem, with reference to the surplus of electrokinetic cell (4)
The energy storage state of remaining electricity and elastic energy storage mechanism (9), full-vehicle control unit (11) using based on frequency domain allocation algorithm respectively to
Fuel cell controller (2), battery management system (5) and elastic energy storage mechanism (9) transmit power output control signal；
Step 3: fuel cell controller (2) sends control signal, control fuel cell system (1) to fuel cell system (1)
Export electric energy；Battery management system (5) sends output power signal, electrokinetic cell (4) output electricity to electrokinetic cell (4)
Energy；Elastic energy storage mechanism (9) receives control signal and power output signal；Realize the fuel cell to flexible stored energy mechanism
The energy hole of hybrid power system.
2. the energy distribution side of the fuel cell hybrid system of flexible stored energy mechanism according to claim 1
Method, it is characterised in that elastic energy storage mechanism (9) includes speed change gear and elastic energy storage case；The speed change gear includes a case
Body, power transmission shaft (911), an energy storage gear (912), release can gear (913), No. two power transmission shafts (914), a switching tube groups
(916), electromagnet (917), permanent magnet (918), selector fork (919) and idler gear (920)；
Energy storage gear (912) and release can gear (913) be socketed in the upper of power transmission shaft (911), and energy storage gear (912) position
In the upside for releasing energy gear (913), idler gear (920) is that two gears compositions are socketed with a bearing, and two gears
It is located at the upper/lower terminal of the bearing respectively；The side transmission of energy storage gear (912) and the gear of idler gear (920) connects
Connect, the opposite side of idler gear (920) gear is located in the plug of selector fork (919), and a permanent magnet (918) is fixed on and changed
The lower end of gear fork (919) plug base a, electromagnet (917) is located at the underface of a permanent magnet (918), an electromagnet
(917) positive-negative power terminals are connected by a switching tube group (916) with the positive and negative electrode of automobile batteries；
The lower gear of idler gear (920) is connected with No. two power transmission shafts (914) by engaged gears；Energy storage gear (912), release energy
Gear (913) and idler gear (920) are respectively positioned in a casing；The top of a number power transmission shaft (911) through casing with
No. two clutches (8) are coaxially connected；No. two power transmission shaft (914) lower ends connect through the coaxial bearing of a casing and elastic energy storage case
Connect.
3. the energy distribution side of the fuel cell hybrid system of flexible stored energy mechanism according to claim 2
Method, it is characterised in that elastic energy storage case includes No. three power transmission shafts (921), energy storage whorl reed (922), brake (923), No. two casees
Body (924) and pulling force sensor (925)；
No. three power transmission shafts (921) are located at the middle part of No. two casings (924), are horizontally through No. two casings (924), energy storage whorl reed
(922), brake (923) and pulling force sensor (925) are arranged in No. two casings (924), energy storage whorl reed (922) and braking
Device (923) is set on No. three power transmission shafts (921), and the inner of energy storage whorl reed (922) is consolidated with the side wall of No. three power transmission shafts (921)
Fixed connection, pulling force sensor (925) is fixed on the outer end of energy storage whorl reed (922), and energy storage whorl reed (922) and brake (923)
Do not contact.
4. the energy distribution side of the fuel cell hybrid system of flexible stored energy mechanism according to claim 3
Method, it is characterised in that brake (923) includes fixed spring (9231), brake bars (9232), spring clip (9233), braking
Take turns (9234), No. four power transmission shafts (9235), No. two switching tube groups (9237), No. two permanent magnets (9238), No. two electromagnet
And No. three casings (9239)；
Braked wheel (9234) is set on No. four power transmission shafts (9235), and braked wheel (9234) top edge is provided with four " U " at equal intervals
Type groove, four " U " types groove is used to insert brake bars (9232), and the end of the brake bars (9232) is embedded with No. two forever
Magnet (9238), No. two permanent magnets (9238) are connected on the vertical clapboard in No. three casings, a left side for No. three casings
It is relative on the inwall up and down of No. three casings to be provided with spring clip provided with fixed spring (9231) between side inwall and dividing plate
(9233), the spring clip (9233) is arranged on the right side of dividing plate, No. two permanent magnets (9238) and No. two electromagnet (9239)
It is oppositely arranged, No. two electromagnet (9239) are arranged between the inner left wall of No. three casings and dividing plate, No. two electromagnet
(9239) positive-negative power terminals are connected by No. two switching tube groups (9237) with the positive and negative electrode of automobile batteries, braked wheel
(9234) between the right side inwall and dividing plate that are arranged on No. three casings.
5. the energy distributing method of the fuel cell hybrid system of flexible stored energy mechanism, it is characterised in that step 2
Described in full-vehicle control unit (11) using based on frequency domain allocation algorithm respectively to fuel cell controller (2), battery management
The specific method of system (5) and elastic energy storage mechanism (9) transmit power output control signal is：
Step 2 one, judge automobile dynamic system demand general power PdemWhether 0 is more than, if so, then performing step 2 two, otherwise
Perform step 2 three；
Whether step 2 two, judgement electrokinetic cell dump energy are less than the minimum threshold values a of battery electric quantity, if so, then performing step
Two or four, otherwise perform step 2 five；Wherein, a is the 20% of the maximum electricity of electrokinetic cell,
Whether step 2 three, the energy storage state Q of judgement elastic energy storage mechanism (9) are less than or equal to 1, if so, then full-vehicle control list
First (11) control clutch (8) closure, elastic energy storage mechanism (9) reclaims the braking energy of automobile, otherwise, full-vehicle control unit
(11) control clutch (8) separation, the braking energy of automobile is discharged by mechanical mechanism；
Step 2 four, using low pass filter to automobile dynamic system demand general power PdemIt is filtered, after low-pass filtered device
The low frequency power signal of output is sent to power battery management system (5), power battery management system (5) control electrokinetic cell
(4) power signal equal with low frequency power is exported, automobile dynamic system demand general power P is recycleddemSubtract low-pass filtered
The low frequency power exported after device, obtain automobile dynamic system demand high frequency power signals, full-vehicle control unit (11) control from
Clutch (8) is closed, and control elastic energy storage mechanism (9) exports the high frequency power of automobile dynamic system demand；
It is constant that step 2 five, full-vehicle control unit (11) control fuel cell system (1) to export by fuel cell controller (2)
Power charges for electrokinetic cell (4).
6. the energy distribution side of the fuel cell hybrid system of flexible stored energy mechanism according to claim 4
Method, it is characterised in that the cut-off frequency of low pass filter is 0.016Hz.
7. the energy distribution side of the fuel cell hybrid system of flexible stored energy mechanism according to claim 4
Method, it is characterised in that the full-vehicle control unit (11) described in step one utilizes speed, gas pedal aperture and brake pedal aperture
Signal of change automobile dynamic system demand general power PdemSpecific method be：Pass through formula：
T=Tmax·α (1)
Pdem=T ω (2)
Calculate and obtain, in formula, T is motor target drive torque；TmaxFor motor maximum driving torque；α steps on for throttle
Plate aperture or brake pedal aperture；ω is motor actual speed, i.e. vehicle speed value.
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| CN108859726A (en) * | 2018-08-24 | 2018-11-23 | 李骏 | A kind of vehicle fuel battery and the compound power drive system of internal combustion engine |
| CN109532566A (en) * | 2018-12-24 | 2019-03-29 | 青岛理工大学 | Fuel cell power system and power battery charged state control method |
| CN110194065A (en) * | 2019-05-29 | 2019-09-03 | 中国第一汽车股份有限公司 | Vehicle energy control method, device, vehicle and the storage medium of vehicle |
| CN110576758A (en) * | 2019-08-13 | 2019-12-17 | 武汉格罗夫氢能汽车有限公司 | energy management method for hydrogen energy automobile |
| CN111137177A (en) * | 2019-12-31 | 2020-05-12 | 上海捷氢科技有限公司 | Energy control method and device for fuel cell vehicle, storage medium, and electronic device |
| CN112659983A (en) * | 2020-04-03 | 2021-04-16 | 长城汽车股份有限公司 | Energy management method and battery control system for non-plug-in fuel cell vehicle |
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| CN108859726A (en) * | 2018-08-24 | 2018-11-23 | 李骏 | A kind of vehicle fuel battery and the compound power drive system of internal combustion engine |
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| CN112659983A (en) * | 2020-04-03 | 2021-04-16 | 长城汽车股份有限公司 | Energy management method and battery control system for non-plug-in fuel cell vehicle |
| CN112659983B (en) * | 2020-04-03 | 2023-05-12 | 长城汽车股份有限公司 | Energy management method and battery control system for non-plug-in fuel cell vehicle |
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