CN107465223A - A kind of bidirectional power supply control method with fuel cell - Google Patents
A kind of bidirectional power supply control method with fuel cell Download PDFInfo
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- CN107465223A CN107465223A CN201710491341.7A CN201710491341A CN107465223A CN 107465223 A CN107465223 A CN 107465223A CN 201710491341 A CN201710491341 A CN 201710491341A CN 107465223 A CN107465223 A CN 107465223A
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- capacitance group
- fuel cell
- power
- group module
- voltage
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- 239000000446 fuel Substances 0.000 title claims abstract description 190
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 47
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 213
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims description 59
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 29
- 239000013589 supplement Substances 0.000 claims description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 230000001186 cumulative effect Effects 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 239000000178 monomer Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- H02J7/0077—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to electric bus technical field, provide a kind of bidirectional power supply control method with fuel cell, including fuel cell system, power capacitance group module, traction electric machine and electric machine controller, the bidirectional power supply control method monitors and shows power capacitance group module voltage state according to the following steps：When voltage U1 is in setting state, voltage U1>675V was more than 3 seconds, while when voltage U1 is in reset state, voltage U1<660V was more than 3 seconds, and the power capacitance group module is for overvoltage condition.Compared with prior art, the advantage of the invention is that by the bidirectional power supply control method can it is over-pressed, under-voltage with automatic decision power capacitance group, precharge, charge and discharge process, allow to continual travelled, continual mileage is greatly increased, and methanol liquid level altitudes can be detected in real time using methanol air detector liquid fuel leak detection device and level sensing detector.
Description
Technical field
The invention belongs to electric bus technical field, is related to a kind of bidirectional power supply control method with fuel cell.
Background technology
The problem of energy and environment are paid close attention to the most as Present Global, the energy is economic basis, and environment is to restrict
An important factor for economy and social development.Energy-conservation and the objective demand of environmental protection promote bus to develop towards motorized direction, therewith
Also the construction of the infrastructure such as the electric charging station for serving extensive electric bus has been promoted.At this stage, the country of China, which is filled, changes
The service object in power station is based on the group of subscribers such as bus, taxi, officer's car.The problem of electric bus is present at present：
1st, electrokinetic cell endurance deficiency, the scheme solved at present have two, and one kind is a large amount of by being loaded on electric bus
Stored energy power battery realize, although this pattern can improve endurance, but still can not meet people's demand, and battery
It is expensive, and complete vehicle weight is greatly increased, another way is to use to change battery mode, due to the knot of electric bus
Structure difference is big, and battery module is difficult standardization, can not be popularized on a large scale, simultaneously because battery weight weight is, it is necessary to special
Battery replacement device, and frequently change electricity and the hidden of substantial amounts of safety and reliability brought to the electric and plant equipment interface of battery pack
Suffer from；2nd, issue for battery life, the charge mode of the high-power quick charge of progress direct to vehicle mounted dynamic battery used at present is not
The charging system of hundred kilowatts easily is only needed, and strong influence can be caused to the life-span of battery.In order to increase course continuation mileage,
Battery put deeply and deep fill can all impact to battery life；3rd, price problem, at present because electric bus wants
Ideal course continuation mileage is realized, then needs to load the electrokinetic cell of larger capacity, because electrokinetic cell price is somewhat expensive, so as to
Cause the cost of vehicle substantially higher；4th, charge infrastructure device deficiency problem, quick charge corresponding to current electric bus
Mode is, it is necessary to build substantial amounts of charging station, even with trickle charge pattern, because battery capacity is bigger, and the public affairs that are typically designed
Car charging pile is handed over also to have 60kw or so, the charging interval is grown, the problem of construction due to related infrastructure, current Electric Transit
Car can not also realize remote traveling, if what if many people worry our dead battery, even if finding a place
Charging, may will also wait could be full of battery within several hours.
The content of the invention
The technical problems to be solved by the invention are the present situations for prior art, and provide one kind and utilize fuel cell system
Unite as the bidirectional power supply control method with fuel cell of power electric capacity electric energy supplement, can by the bidirectional power supply control method
With automatic decision power capacitance group it is over-pressed, it is under-voltage, precharge, charge and discharge process so that can be travelled with continual, driving
Mileage greatly increases, and to meet the demand of lasting mileage number, have extended cycle life, safe, functional reliability is high.
Technical scheme is used by the present invention solves above-mentioned technical problem：A kind of bidirectional power supply control with fuel cell
Method processed, including fuel cell system, power capacitance group module, traction electric machine and electric machine controller, by moving when electric car is run
Power capacitance group module is powered through electric machine controller for traction electric machine, while fuel cell system is power capacitance group module supplement electricity
Can, it is electrically connected with voltage sensor 7V1 in described power capacitance group module, it is characterised in that setting voltage sensor 7V1 is read
The real-time voltage U1 of power capacitance group module is taken, power capacitance group module is set and adds up voltage as voltage U2, the bidirectional power supply control
Method processed monitors and shows power capacitance group module voltage state according to the following steps：
When voltage U1 is in setting state, voltage U1>675V was more than 3 seconds, while when voltage U1 is in reset state,
Voltage U1<660V was more than 3 seconds, and the power capacitance group module is for overvoltage condition；
When voltage U1 is in setting state, voltage U1<520V was more than 5 seconds, while when voltage U1 is in reset state,
Voltage U1>550V was more than 5 seconds, and the power capacitance group module is for under-voltage condition；
Difference voltage U3=voltage U2- voltage U1, when difference voltage U3 is in setting state, voltage U3<20V is more than 3
Second, while when voltage U3 is in reset state, voltage U1>More than 3 seconds, the power capacitance group module was in and has been pre-charged 25V
Into state.
The measure taken for optimization such scheme specifically includes：
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system and power
Three main contactors, the respectively positive contactor of fuel main contactor 6KM1, capacitor charge and discharge are electrically connected between capacitance group module
7KM3 and capacitor charge and discharge bear contactor 7KM4, and main contactor also includes one and is used to carry out in advance power capacitance group module
The pre-charge contactor 7KM2, described pre-charge contactor 7KM2 of charge control are in parallel with the positive contactor 7KM3 of capacitor charge and discharge
Output end after connection is connected electrically on the positive pole of power capacitance group module, and described pre-charge contactor 7KM2 need to expire when closing
It is enough lower condition：1st, the positive contactor 7KM3 of capacitor charge and discharge disconnects；2nd, power capacitance group module pre-charge does not complete.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the positive contactor of described capacitor charge and discharge
7KM3 and capacitor charge and discharge bear contactor 7KM4 be power capacitance group module discharge and recharge must be through approach, described electric capacity charge and discharge
The closure that electric positive contactor 7KM3 and capacitor charge and discharge bear contactor 7KM4 need to meet following condition：1st, pre-charge contactor 7KM2
Disconnect；2nd, power capacitance group module pre-charge is completed.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the electrical connection of described fuel cell system
Fuel main contactor 6KM1, the emergent impulse electricity module of described electric capacity include the positive contactor of emergent charging mouth, emergent charging
7KM1 and emergent charging bear contactor 7KM5, the positive contactor 7KM1 of emergent charging mouth, emergent charging and emergent charging is born and connect
Tentaculum 7KM5 can realize emergent charging when closing, described fuel main contactor 6KM1 need to meet following condition when closing：1、
There is not overvoltage condition in power capacitance group module；2nd, power capacitance group module is in non-emergency charge mode.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system is by methanol
Case and formaldehyde hydrogen-producing fuel are formed, and are provided with fuel pump cassette in described methanol tank, have oil return pipe in described fuel pump cassette
And flowline, methanol air detector is bonded with described methanol tank, and described fuel pump cassette is provided with liquid fuel
Leak detection device and level sensing detector, described control power module include 48V batteries and DC/DC power modules,
Control power supply as fuel cell system after described 48V batteries are connected in parallel with DC/DC power modules, described DC/
DC power module need to meet following condition when starting：1st, the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor
7KM4 is in closure state；2nd, without liquid methanol fuel detection alarm；3rd, without methanol liquid level detection alarm；4th, visited without methanol air
Observe and predict police.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system is to power
It need to meet following condition during capacitance group module electric energy supplement：1st, fuel main contactor 6KM1 is closed；2nd, visited without liquid methanol fuel
Observe and predict police；3rd, without methanol liquid level detection alarm；4th, without methanol air detection alarm.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the lower end of methanol tank is provided with methanol
Ventilating fan, described methanol ventilating fan need to meet one of following condition when starting：1st, liquid methanol fuel detection alarm；2nd, methanol
Level detection is alarmed；3rd, methanol air detection alarm.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the electric car includes body frame, car
The rear end of body skeleton is provided with fuel cell system, power capacitance group module and electric machine controller, described fuel cell system
For system in the roof of body frame, described power capacitance group module is provided in the centre position of body frame, electricity
Machine controller is arranged on the bottom of body frame, described fuel cell system, power capacitance group module and electric machine controller
Three is electrically connected to form bidirectional power supply circuit, and described fuel cell system is made up of methanol tank and formaldehyde hydrogen-producing fuel, described
Methanol tank in be provided with fuel pump cassette, there is oil return pipe and flowline, in described methanol tank in described fuel pump cassette
Methanol air detector is bonded with, described fuel pump cassette is provided with liquid fuel leak detection device and level sensing detection
Device.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the rear end of described body frame is also set
Rear storehouse tail end shrouding is equipped with, capacitor box ventilating fan is provided with described rear storehouse tail end shrouding, under described methanol tank
End is provided with methanol ventilating fan.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described bidirectional power supply circuit and traction
Motor electrically connects, wherein described power capacitance group module provides power, fuel cell after electric machine controller for traction electric machine
It is power capacitance group module electric energy supplement that system, which is electrically connected and is used for power capacitance group module, and the bidirectional power supply circuit also includes
Power module and the emergent impulse electricity module of electric capacity are controlled, described control power module is electrically connected and is used for fuel cell module
Main control power supply as operation of fuel cell system, the emergent impulse electricity module of electric capacity are connected electrically in power capacitance group module simultaneously
For carrying out emergent charging when being repaired to high-tension apparatus to power capacitance group module discharge and to power capacitance group module.Here
Using fuel cell system give power capacitance group module carry out electric energy supplement so that electric bus can be with continual progress
Traveling, continual mileage greatly increases, at the same be additionally arranged again electric capacity meet an urgent need impulse electricity module can be in emergent progress discharge and recharge
Management, ensure that security during maintenance.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, it is electrically connected on described control power module
It is connected to theft-resistant link chain, the theft-resistant link chain described in during the leakage of methanol tank will to control power module power-off.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described control power module includes
48V batteries and DC/DC power modules, described 48V batteries are used as fuel cell after being connected in parallel with DC/DC power modules
The control power supply of system, described 48V batteries electrically connect with fuel cell system, DC/DC power modules and power capacitance group
Module electrically connects.Here 48V batteries can control the operation of whole fuel cell system, and DC/DC power modules can make again
Obtain 48V batteries and carry out two-way charging with power capacitance group module, so as to ensure the electric energy in whole 48V batteries, so as to
Reach the reliability of control fuel cell system.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system and power
Three main contactors, the respectively positive contactor of fuel main contactor 6KM1, capacitor charge and discharge are electrically connected between capacitance group module
7KM3 and capacitor charge and discharge bear contactor 7KM4, described fuel main contactor 6KM1 and are connected electrically in fuel cell system positive pole
Output end be used to turn on/off fuel cell system, the cathode output end electrical connection capacitor charge and discharge of fuel cell system is born
Negative pole after contactor 7KM4 with power capacitance group module electrically connects, and described fuel cell system is through fuel main contactor
The positive contactor 7KM3 of 6KM1, capacitor charge and discharge and capacitor charge and discharge are mended after bearing contactor 7KM4 with power capacitance group module composition
Charging energy loop, described power capacitance group module bear contactor through the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge
7KM4 is formed with electric machine controller and is provided power loop.
Here when fuel main contactor 6KM1, the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor
When 7KM4 is closed, such fuel cell system can carries out electric energy supplement to power capacitance group module, then when electric capacity charge and discharge
Electric positive contactor 7KM3 and capacitor charge and discharge can provide electrical energy drive to electric machine controller again after bearing contactor 7KM4 closures
Whole electric bus operation, that is to say, that while while electric energy supplement, while driving operation is given, so that whole dynamic
Power capacitance group module can continue to keep electricity.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, main contactor also includes one and is used for
Enter the pre-charge contactor 7KM2, described pre-charge contactor 7KM2 and electric capacity of line precharge control to power capacitance group module
Output end after the positive contactor 7KM3 of discharge and recharge is connected in parallel is connected electrically on the positive pole of power capacitance group module, described preliminary filling
The positive contactor 7KM3 of capacitor charge and discharge described in when electric contactor 7KM2 is closed disconnects, and described fuel cell system is through fuel master
Contactor 6KM1, pre-charge contactor 7KM2 and capacitor charge and discharge are born pre- with power capacitance group module composition after contactor 7KM4
Charge circuit.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described 48V batteries are through DC/DC electricity
The positive contactor 7KM3 of contactor 7KM4, capacitor charge and discharge and power capacitance group module composition are born by capacitor charge and discharge after source module
Two-way charge circuit, described 48V batteries can be charged through DC/DC power modules to power capacitance group module, described
Power capacitance group module can give 48V batteries charge.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system and power
The first current transformer 7TA1 and the second current transformer 6TA2, the second described electric current are additionally provided between capacitance group module
Transformer 6TA2 is connected electrically on fuel main contactor 6KM1 and for being measured to the output current of fuel cell system, institute
The the first current transformer 7TA1 stated is connected electrically on the positive pole of power capacitance group module and for being filled to power capacitance group module
Discharge current measures.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described power capacitance group module is just
Pole electrically connects after an electric capacity fuse 7FU3 with the first current transformer 7TA1, is electrically connected with electric capacity fuse 7FU3
The capacitive insulation detector 7U1 of one Insulation monitoring for being used for power condenser network, described capacitive insulation detector 7U1 is through electricity
Hold the negative contactor 7KM4 of discharge and recharge to electrically connect with the negative pole of power capacitance group module.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, the emergent impulse electricity module of described electric capacity
Include the positive contactor 7KM1 of emergent charging mouth, emergent charging and emergent charging bears contactor 7KM5, the negative contact of emergent charging
Device 7KM5 is connected electrically in the negative pole of power capacitance group module, and the positive contactor 7KM1 of described emergent charging is through electric capacity fuse 7FU3
The positive pole of power capacitance group module, the positive contactor 7KM1 of described emergent charging mouth, emergent charging, emergent charging are connected electrically in afterwards
The negative emergent charging and discharging circuit of contactor 7KM5 and power capacitance group module composition.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described power capacitance group module is by altogether
544 monomer electric capacity of meter are formed by connecting by string and mode, and 2 monomer electric capacity are simultaneously unified into an energy-storage module, 8 energy-storage modules
An energy storage module is connected into, 34 energy storage modules are connected into whole power capacitance group module.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described fuel cell system is by 5
Battery fuel casing module is formed, and closure switch are provided with to determine battery fuel casing in described battery fuel casing module
Whether module puts into utilization.
In a kind of above-mentioned bidirectional power supply control method with fuel cell, described 5 battery fuel box body formworks
Rectification tube module 6V1 is electrically connected with block.
Compared with prior art, the advantage of the invention is that：
1st, can, precharge over-pressed, under-voltage with automatic decision power capacitance group, discharge and recharge by the bidirectional power supply control method
Process so that can be travelled with continual, continual mileage greatly increases
3rd, can be detected in real time using methanol air detector liquid fuel leak detection device and level sensing detector
Methanol liquid level altitudes, fluid leakage situation and gas leakage situation, real-time implementation alarm, ensure security；
3rd, electric energy supplement is carried out to power capacitance group module using fuel cell system, while while electric energy supplement,
While driving operation is given, so that whole power capacitance group module can continue to keep electricity so that electric bus can
Being travelled with continual, continual mileage greatly increases,
4 while meet an urgent need impulse electricity module of electric capacity is additionally arranged again can ensure that dimension in the management of emergent progress discharge and recharge
Security when repairing；
5th, 48V batteries can be directly allowed to be charged to power capacitance group module by DC/DC power modules, when
When 48V accumulator electric-quantities are reduced, it can be charged again by power capacitance group module back to 48V batteries, so as to reach
Control the reliability of fuel cell system.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the electric car of this bidirectional power supply with fuel cell；
Fig. 2 is Fig. 1 other direction structural representation；
Fig. 3 is the structural representation of methanol tank installation；
Fig. 4 is the circuit theory schematic diagram of this bidirectional power supply circuit.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
In figure, electric machine controller 1；Traction electric machine 2；Power capacitance group module 3；Fuel cell system 4；Control power module
5；The emergent impulse electricity module 6 of electric capacity；Battery fuel casing module 7；48V batteries 8；DC/DC power modules 9；Emergent charging mouth
10；Body frame 11；Methanol tank 12；Fuel pump cassette 13；Oil return pipe 14；Flowline 15；Methanol air detector 16；Level sensing
Detector 17；Liquid fuel leak detection device 18；Storehouse tail end shrouding 19 afterwards；Capacitor box ventilating fan 20；Methanol ventilating fan 21；Safety
Chain 22.
As shown in Figure 1, Figure 2 and shown in Fig. 3, the electric car of this bidirectional power supply with fuel cell, include body frame 11,
The rear end of body frame 11 is provided with fuel cell system 4, power capacitance group module 3 and electric machine controller 1, fuel cell system
System 4 is arranged in the roof of body frame 11, and power capacitance group module 3 is provided in the centre position of body frame 11, electricity
Machine controller 1 is arranged on the bottom of body frame 11, and fuel cell system 4 is made up of methanol tank 12 and formaldehyde hydrogen-producing fuel, first
Fuel pump cassette 13 is provided with alcohol case 12, there is oil return pipe 14 and flowline 15 in fuel pump cassette 13, can so carry out first
The supply of aldehyde hydrogen-producing fuel, methanol air detector 16 is bonded with methanol tank 12, methanol air detector 16 sets 4 altogether here
It is individual, for detecting formaldehyde leakage situation, fuel pump cassette 13 is provided with liquid fuel leak detection device 18 and level sensing is visited
Device 17 is surveyed, level sensing detector 17 sets 1 and for detecting formaldehyde case liquid level, can so watch formaldehyde hydrogen manufacturing combustion
The service condition of material, supplement fuel is conveniently carried out, liquid fuel leak detection device 18 is also provided with 1, for detecting formaldehyde hydrogen manufacturing
Fuel liquid leakage situation, it could only be carried out to power capacitance group mould in the case of the alarm free of fuel cell system 4 here
Block 3 carries out electric energy supplement, and the rear end of body frame 11 is additionally provided with rear storehouse tail end shrouding 19, set on rear storehouse tail end shrouding 19
There is capacitor box ventilating fan 20, heat extraction can be carried out to power capacitance group module 3 by capacitor box ventilating fan 20 here, in methanol tank
12 lower end is provided with methanol ventilating fan 21, here when detecting formaldehyde leakage or sensor fault, can pass through methanol
The formaldehyde discharge fuel tank that ventilating fan 21 will likely can leak, ensures safety.
As shown in figure 4, fuel cell system 4, power capacitance group module 3 and the three of electric machine controller 1 are electrically connected to form
Bidirectional power supply circuit, bidirectional power supply circuit electrically connect with traction electric machine 2, and wherein power capacitance group module 3 is after electric machine controller
Power is provided for traction electric machine, fuel cell system electrically connects with power capacitance group module 3 and for being power capacitance group module 3
Electric energy supplement, the bidirectional power supply circuit also include control power module 5 and the emergent impulse electricity module 6 of electric capacity, control power module 5
The main control power supply for electrically connecting with fuel cell module 4 and being run for being used as fuel cell system 4；The emergent impulse electricity mould of electric capacity
Block 6 is connected electrically in power capacitance group module 3 and for being discharged when being repaired to high-tension apparatus power capacitance group module 3 and right
Power capacitance group module 3 carries out emergent charging, and the maximum innovation of the present invention here is to power electric capacity using fuel cell system 4
Group module 3 carries out electric energy supplement so that electric bus can be travelled with continual, and continual mileage greatly increases, together
When be additionally arranged electric capacity impulse electricity module 6 of meeting an urgent need again and can ensure that safety during maintenance in the management of emergent progress discharge and recharge
Property.
Power capacitance group module 3 is formed by connecting by amounting to 544 monomer electric capacity by string and mode, and 2 monomer electric capacity are simultaneously
An energy-storage module is unified into, 8 energy-storage modules are connected into an energy storage module, and 34 energy storage modules are connected into whole power electric capacity
Group module 3, the operating voltage 450V-675V of power capacitance group module 3, fuel cell system 4 is by 5 battery fuel casing modules 7
Composition, fuel cell system 4 operating voltage 450V-675V, power 25KW, closure is provided with battery fuel casing module 7
Switch to determine whether battery fuel casing module 7 puts into utilization, rectifying tube is electrically connected with 5 battery fuel casing modules 7
Module 6V1.Here the unidirectional direction that battery fuel casing module 7 can be realized by rectification tube module 6V1 is charged, and is prevented reversely
Battery fuel casing module 7 is damaged.
Three main contactors are electrically connected between fuel cell system 4 and power capacitance group module 3, respectively fuel master connects
The positive contactor 7KM3 of tentaculum 6KM1, capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4, fuel main contactor 6KM1 electricity
The output end for being connected to the positive pole of fuel cell system 4 is used to turn on/off fuel cell system 4, the negative pole of fuel cell system 4
Output end electrical connection capacitor charge and discharge electrically connects after bearing contactor 7KM4 with the negative pole of power capacitance group module 3, fuel cell system
System 4 is after fuel main contactor 6KM1, the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4 with moving
Power capacitance group module 3 forms electric energy supplement loop, and power capacitance group module 3 is through the positive contactor 7KM3 of capacitor charge and discharge and electric capacity
Discharge and recharge bears contactor 7KM4 and forms offer power loop with electric machine controller 1, here when fuel main contactor 6KM1, electric capacity fill
When the negative contactor 7KM4 of positive contactor 7KM3 and capacitor charge and discharge that discharges is closed, such can of fuel cell system 4 is to dynamic
Power capacitance group module 3 carries out electric energy supplement, then when the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor
Electric machine controller 1 can be given to provide electrical energy drive whole electric bus operation after 7KM4 closures again, that is to say, that while mending
While charging energy, while giving driving operation, so that whole power capacitance group module 3 can persistently keep electricity, master connects
Tentaculum also includes a pre-charge contactor 7KM2 for being used to enter power capacitance group module 3 line precharge control, precharge
Output end after the contactor 7KM2 and positive contactor 7KM3 of capacitor charge and discharge is connected in parallel is connected electrically in power capacitance group module 3
On positive pole, the positive contactor 7KM3 of capacitor charge and discharge disconnects when pre-charge contactor 7KM2 is closed, and fuel cell system 4 is through fuel master
Contactor 6KM1, pre-charge contactor 7KM2 and capacitor charge and discharge are formed after bearing contactor 7KM4 with power capacitance group module 3
Preliminary filling electrical circuit.Here the detection of pre-charge state can be carried out by pre-charge contactor 7KM2, ensures subsequent fuel cell
System 4 gives the reliability of the electric energy supplement of power capacitance group module 3.
The first current transformer 7TA1 and second is additionally provided between fuel cell system 4 and power capacitance group module 3
Current transformer 6TA2, the second current transformer 6TA2 are connected electrically on fuel main contactor 6KM1 and for fuel cell systems
The output current of system 4 measures, and the first current transformer 7TA1 is connected electrically on the positive pole of power capacitance group module 3 and is used for
The charging and discharging currents of power capacitance group module 3 are measured, can so watch in real time detection fuel cell system 4 electric current with
And the electric current of power capacitance group module 3.
Theft-resistant link chain is electrically connected with control power module 5, and theft-resistant link chain 22 will cause control electricity during the leakage of methanol tank 12
Source module 5 powers off, and control power module 5 includes 48V batteries 8 and DC/DC power modules 9,48V batteries 8 and DC/DC power supplys
Control power supply as fuel cell system 4 after module 9 is connected in parallel, 48V batteries 8 electrically connect with fuel cell system 4,
DC/DC power modules 9 electrically connect with power capacitance group module 3.Here 48V batteries 8 can control whole fuel cell system 4
Operation, DC/DC power modules 9 can make it that 48V batteries 8 and power capacitance group module 3 carry out two-way charging again, so as to
Ensure the electric energy in whole 48V batteries 8, so as to reach the reliability of control fuel cell system 4,48V batteries 8 pass through
The positive contactor 7KM3 of contactor 7KM4, capacitor charge and discharge and power capacitance group are born by capacitor charge and discharge after DC/DC power modules 9
Module 3 forms two-way charge circuit, and 48V batteries 8 can be filled through DC/DC power modules 9 to power capacitance group module 3
Electricity, power capacitance group module 3 can charge to 48V batteries 8, here when capacitor charge and discharge bears contactor 7KM4, electric capacity charge and discharge
After electric positive contactor 7KM3 closures, it can directly allow 48V batteries 8 can be to power capacitance group mould by DC/DC power modules 9
Block 3 is charged, again can be by power capacitance group module 3 back to 48V batteries 8 when the electricity of 48V batteries 8 is reduced
Charged.
The positive pole of power capacitance group module 3 is electrically connected after an electric capacity fuse 7FU3 with the first current transformer 7TA1
Connect, the capacitive insulation detector of an Insulation monitoring for being used for power condenser network is electrically connected with electric capacity fuse 7FU3
7U1, capacitive insulation detector 7U1 bear contactor 7KM4 through capacitor charge and discharge and electrically connected with the negative pole of power capacitance group module 3, this
In by capacitive insulation detector 7U1 here can with electrical measurement capacitance group positive pole I levels earth fault, capacitance group positive pole II levels be grounded therefore
Barrier, capacitance group negative pole I levels earth fault, capacitance group negative pole II level earth faults, I level earth faults<The ground connection event of 500k Ω, II level
Barrier<80k Ω, the emergent impulse electricity module 6 of electric capacity, which includes the positive contactor 7KM1 of emergent charging mouth 10, emergent charging and met an urgent need, fills
The negative contactor 7KM5 of electricity, emergent charging bear the negative pole that contactor 7KM5 is connected electrically in power capacitance group module 3, and emergent charging just connects
Tentaculum 7KM1 is connected electrically in the positive pole of power capacitance group module 3, emergent charging mouth 10, emergent charging after electric capacity fuse 7FU3
Positive contactor 7KM1, emergent charging bear contactor 7KM5 and power capacitance group module 3 forms emergent charging and discharging circuit, exist here
Under the pattern of emergent discharge and recharge, vehicle is forbidden to draw, emergent charging maximum charging current is controlled in 200A.
Here the bidirectional power supply control method of fuel cell is carried, voltage sensor is electrically connected with power capacitance group module 3
Device 7V1, setting voltage sensor 7V1 read the real-time voltage U1 of power capacitance group module, and setting power capacitance group module adds up
Voltage is voltage U2, and the bidirectional power supply control method monitors and shows power capacitance group module voltage state according to the following steps：
When voltage U1 is in setting state, voltage U1>675V was more than 3 seconds, while when voltage U1 is in reset state,
Voltage U1<660V was more than 3 seconds, and the power capacitance group module 3 is for overvoltage condition；
When voltage U1 is in setting state, voltage U1<520V was more than 5 seconds, while when voltage U1 is in reset state,
Voltage U1>550V was more than 5 seconds, and the power capacitance group module 3 is for under-voltage condition；
Difference voltage U3=voltage U2- voltage U1, when difference voltage U3 is in setting state, voltage U3<20V is more than 3
Second, while when voltage U3 is in reset state, voltage U1>More than 3 seconds, the power capacitance group module 3 was in and has been pre-charged 25V
Into state.
Pre-charge contactor 7KM2 need to meet following condition when closing：1st, the positive contactor 7KM3 of capacitor charge and discharge disconnects；2、
The precharge of power capacitance group module 3 does not complete；The positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4
Be the discharge and recharge of power capacitance group module 3 must be through approach, the positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor
7KM4 closure need to meet following condition：1st, pre-charge contactor 7KM2 disconnects；2nd, the precharge of power capacitance group module 3 is completed.
Fuel cell system 4 electrically connect fuel main contactor 6KM1, the positive contactor 7KM1 of emergent charging mouth, emergent charging with
And emergent charging can realize emergent charging when bearing contactor 7KM5 closure, fuel main contactor 6KM1 need to meet following when closing
Condition：1st, there is not overvoltage condition in power capacitance group module 3；2nd, power capacitance group module 3 is in non-emergency charge mode.
DC/DC power modules 9 need to meet following condition when starting：1st, the positive contactor 7KM3 of capacitor charge and discharge and electric capacity fill
The negative contactor 7KM4 of electric discharge is in closure state；2nd, without liquid methanol fuel detection alarm；3rd, without methanol liquid level detection alarm；4、
Without methanol air detection alarm.
It need to meet following condition when fuel cell system 4 is to power capacitance group 3 electric energy supplement of module：1st, fuel main contactor
6KM1 is closed；2nd, without liquid methanol fuel detection alarm；3rd, without methanol liquid level detection alarm；4th, without methanol air detection alarm.
Methanol ventilating fan 21 need to meet one of following condition when starting：1st, liquid methanol fuel detection alarm；2nd, methanol solution
Position detection alarm；3rd, methanol air detection alarm.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from scope defined in the spirit of the present invention.
Claims (10)
1. a kind of bidirectional power supply control method with fuel cell, including fuel cell system, power capacitance group module, traction
Motor and electric machine controller, powered when electric car is run by power capacitance group module through electric machine controller for traction electric machine, simultaneously
Fuel cell system is power capacitance group module electric energy supplement, and voltage sensor is electrically connected with described power capacitance group module
7V1, it is characterised in that setting voltage sensor 7V1 reads the real-time voltage U1 of power capacitance group module, sets power capacitance group
The cumulative voltage of module is voltage U2, and the bidirectional power supply control method monitors and shows power capacitance group module voltage according to the following steps
State：
When voltage U1 is in setting state, voltage U1>675V was more than 3 seconds, while when voltage U1 is in reset state, voltage
U1<660V was more than 3 seconds, and the power capacitance group module is for overvoltage condition；
When voltage U1 is in setting state, voltage U1<520V was more than 5 seconds, while when voltage U1 is in reset state, voltage
U1>550V was more than 5 seconds, and the power capacitance group module is for under-voltage condition；
Difference voltage U3=voltage U2- voltage U1, when difference voltage U3 is in setting state, voltage U3<20V was more than 3 seconds, together
When voltage U3 is in reset state, voltage U1>More than 3 seconds, the power capacitance group module was in precharge and completes shape 25V
State.
2. a kind of bidirectional power supply control method with fuel cell according to claim 1, it is characterised in that described
It is electrically connected with three main contactors between fuel cell system and power capacitance group module, respectively fuel main contactor 6KM1,
The positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4, and main contactor also includes one and is used for dynamic
Power capacitance group module enters pre-charge contactor 7KM2, described pre-charge contactor 7KM2 and the electric capacity charge and discharge of line precharge control
Output end after electric positive contactor 7KM3 is connected in parallel is connected electrically on the positive pole of power capacitance group module, and described precharge connects
Tentaculum 7KM2 need to meet following condition when closing：1st, the positive contactor 7KM3 of capacitor charge and discharge disconnects；2nd, power capacitance group module is pre-
Charging unfinished.
3. a kind of bidirectional power supply control method with fuel cell according to claim 2, it is characterised in that described
The positive contactor 7KM3 of capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4 be power capacitance group module discharge and recharge must be through
The closure that approach, the positive contactor 7KM3 of described capacitor charge and discharge and capacitor charge and discharge bear contactor 7KM4 need to meet following bar
Part：1st, pre-charge contactor 7KM2 disconnects；2nd, power capacitance group module pre-charge is completed.
4. a kind of bidirectional power supply control method with fuel cell according to claim 3, it is characterised in that described
Fuel cell system electrically connect fuel main contactor 6KM1, described electric capacity meet an urgent need impulse electricity module include emergent charging mouth,
The positive contactor 7KM1 of emergent charging and emergent charging bear contactor 7KM5, the positive contactor 7KM1 of emergent charging mouth, emergent charging
And emergent charging can realize emergent charging when bearing contactor 7KM5 closure, be needed when described fuel main contactor 6KM1 is closed
Meet following condition：1st, there is not overvoltage condition in power capacitance group module；2nd, power capacitance group module is in non-emergency charging
Pattern.
5. a kind of bidirectional power supply control method with fuel cell according to claim 4, it is characterised in that described
Fuel cell system is made up of methanol tank and formaldehyde hydrogen-producing fuel, and fuel pump cassette, described combustion are provided with described methanol tank
There is oil return pipe and flowline in material pump cassette, methanol air detector is bonded with described methanol tank, in described fuel
Pump cassette is provided with liquid fuel leak detection device and level sensing detector, and described control power module includes 48V electric power storages
Pond and DC/DC power modules, described 48V batteries and DC/DC power modules be connected in parallel after as fuel cell system
Power supply is controlled, described DC/DC power modules need to meet following condition when starting：1st, the positive contactor 7KM3 of capacitor charge and discharge and
Capacitor charge and discharge bears contactor 7KM4 and is in closure state；2nd, without liquid methanol fuel detection alarm；3rd, without methanol level detection
Alarm；4th, without methanol air detection alarm.
6. a kind of bidirectional power supply control method with fuel cell according to claim 5, it is characterised in that described
It need to meet following condition when fuel cell system is to power capacitance group module electric energy supplement：1st, fuel main contactor 6KM1 is closed；
2nd, without liquid methanol fuel detection alarm；3rd, without methanol liquid level detection alarm；4th, without methanol air detection alarm.
7. a kind of bidirectional power supply control method with fuel cell according to claim 6, it is characterised in that in methanol
The lower end of case is provided with methanol ventilating fan, and described methanol ventilating fan need to meet one of following condition when starting：1st, methanol liquid
Fuel detection is alarmed；2nd, methanol liquid level detection alarm；3rd, methanol air detection alarm.
A kind of 8. bidirectional power supply control method with fuel cell according to claim 7, it is characterised in that the electric car
Including body frame, the rear end of body frame is provided with fuel cell system, power capacitance group module and electric machine controller,
Described fuel cell system is arranged in the roof of body frame, and described power capacitance group module is provided in vehicle body bone
The centre position of frame, electric machine controller are arranged on the bottom of body frame, described fuel cell system, power capacitance group module
And electric machine controller three is electrically connected to form bidirectional power supply circuit, described fuel cell system is by methanol tank and formaldehyde hydrogen manufacturing
Fuel mix, fuel pump cassette is provided with described methanol tank, there is oil return pipe and flowline, institute in described fuel pump cassette
Methanol air detector is bonded with the methanol tank stated, described fuel pump cassette be provided with liquid fuel leak detection device and
Level sensing detector.
9. a kind of bidirectional power supply control method with fuel cell according to claim 8, it is characterised in that described
The rear end of body frame is additionally provided with rear storehouse tail end shrouding, and capacitor box ventilating fan is provided with described rear storehouse tail end shrouding,
The lower end of described methanol tank is provided with methanol ventilating fan.
10. a kind of bidirectional power supply control method with fuel cell according to claim 9, it is characterised in that described
Bidirectional power supply circuit electrically connected with traction electric machine, wherein described power capacitance group module after electric machine controller for traction electricity
Machine provides power, and it is power capacitance group module electric energy supplement that fuel cell system, which is electrically connected and is used for power capacitance group module,
The bidirectional power supply circuit also includes control power module and the emergent impulse electricity module of electric capacity, described control power module and fuel
Battery module electrically connects and is used for the main control power supply as operation of fuel cell system, the emergent impulse electricity module electrical connection of electric capacity
In power capacitance group module and for high-tension apparatus is being repaired when to power capacitance group module discharge and to power capacitance group
Module carries out emergent charging.
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| CN201710491341.7A CN107465223A (en) | 2017-06-26 | 2017-06-26 | A kind of bidirectional power supply control method with fuel cell |
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| CN201710491341.7A CN107465223A (en) | 2017-06-26 | 2017-06-26 | A kind of bidirectional power supply control method with fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713345A (en) * | 2018-12-21 | 2019-05-03 | 中广核研究院有限公司 | Collecting and distributing manifold type emergency power system and collecting and distributing manifold type emergency power supply station |
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Application publication date: 20171212 |