CN108215894A - A kind of composite fuel cell power-supply system and control method - Google Patents
A kind of composite fuel cell power-supply system and control method Download PDFInfo
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- CN108215894A CN108215894A CN201711464983.4A CN201711464983A CN108215894A CN 108215894 A CN108215894 A CN 108215894A CN 201711464983 A CN201711464983 A CN 201711464983A CN 108215894 A CN108215894 A CN 108215894A
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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
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The present invention relates to a kind of composite fuel cell power-supply systems and control method, system to include：Fuel cell module includes the fuel cell pack of multiple parallel connections；Power energy-storage module；Data acquisition module is connect respectively with the load in power energy-storage module and automobile；Composite power source controller is connect respectively with fuel cell module, power energy-storage module and data acquisition module；Method includes：The electricity data of automotive interior is acquired, automobile current state is judged according to the electricity data of acquisition, if after driving condition then determines the current energy storage capacity of load demand power and power energy-storage module, the startup of self adaptive control fuel cell module and the pure module of power；After if on-position then determines the current energy storage capacity of power energy-storage module, the braking process of self adaptive control automobile.Compared with prior art, the present invention it is with uniformity it is good, the at low cost, cold start-up of manufacture is rapid, long lifespan and it is highly reliable the advantages that.
Description
Technical field
The present invention relates to high power fuel cell automotive field, more particularly, to a kind of composite fuel cell power-supply system and
Control method.
Background technology
In recent years with the maturation of fuel cell technology and the reduction of cost, fuel cell car has rapid development.
Vehicle fuel battery power-supply system is the key technology of fuel cell car development, for the power supply of high power fuel cell automobile
For system, rapid reaction can be made to the demand power of vehicle, real-time high-efficiency to meet vehicle demand power extremely important.
Therefore it designs a efficient, reliable, long lifespan and economic vehicle fuel battery power-supply system is extremely important.
High power fuel cell automobile power system is generally using composite fuel cell power-supply system at present, i.e., using fuel
Battery combination accumulator, the super capacitor even energy storage devices such as flywheel composition hybrid power source system.Patent CN106564398A and
Although patent CN105966255A gives the implementation method of fuel cell system for vehicles, but fuel cell power source module is all more
Single pile structure in series MEA, vehicle significant power demand cause to have to increase bipolar plates and membrane electrode (MEA) area, band
Carry out problems with：
1st, consistency is difficult to ensure that.The increase of bipolar plates, MEA areas causes air to distribute, heat is distributed, moisture is matched, electric current
Distribution is uneven, reduces the performance of fuel cell pack.
2nd, processing and manufacturing is difficult.Increase bipolar plates, MEA manufacture difficulty, at the same pile is brought to be difficult to seal, pile integrates
The problem of test is difficult.
3rd, cold start-up is difficult.Bipolar plates, the increase of MEA areas, cause thermal capacitance to increase, heating is slow.Cold start-up simultaneously is to fuel
The service life of battery pile also has a significant impact.
4th, poor reliability.System is connected in series by multi-disc MEA, and fuel cell pile reliability is monolithic MEA reliabilities
Product, system reliability are low.
Invention content
The purpose of the present invention is provide a kind of composite fuel cell power-supply system and control method regarding to the issue above.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of composite fuel cell power-supply system, the system comprises：
Fuel cell module includes the fuel cell pack of multiple parallel connections, for providing main power source for automobile；
Power energy-storage module, for providing peak power for automobile；
Data acquisition module is connect respectively with the load in power energy-storage module and automobile, for acquiring automotive interior
Related electricity data；
Composite power source controller connect with fuel cell module, power energy-storage module and data acquisition module, is used for respectively
According to the related electricity data of data collecting module collected, startup and the pass of fuel cell module and power energy-storage module are controlled
It closes, when controlling the fuel cell module to be started, the fuel cell pack of each parallel connection is started by the way of taking turns starting.
Preferably, the fuel cell module further includes multiple first DC/DC converters, and each first DC/DC becomes
Parallel operation is connect respectively with the load in fuel cell pack, automobile and composite power source controller, the number of the first DC/DC converters
It measures and matches with the quantity of fuel cell pair.
Preferably, the power energy-storage module includes power energy-storage travelling wave tube and the 2nd DC/DC converters, the 2nd DC/
DC converters are connect respectively with the load in power energy-storage travelling wave tube, automobile and composite power source controller.
Preferably, the power energy-storage travelling wave tube includes power type battery or super capacitor.
Preferably, the data acquisition module includes load current Acquisition Circuit, load voltage Acquisition Circuit and power storage
Can module voltage Acquisition Circuit, after the load in series in the load current Acquisition Circuit and automobile, with composite power source controller
Connection；After the load voltage Acquisition Circuit is in parallel with load, it is connect with composite power source controller；The power energy-storage module electricity
After pressing Acquisition Circuit in parallel with power energy-storage module, it is connect with composite power source controller.
Preferably, the mode that takes turns starting is specially：Take fuel cell module is currently up number and fuel electricity
The remainder of the quantity division result of pond module fuel cells heap starts the fuel cell identical with the remainder number first
Heap accordingly opens subsequent fuel cell pack further according to load demand power.
A kind of control method of composite fuel cell power-supply system, the method includes the following steps：
S1 the electricity data of automotive interior) is acquired, automobile current state is judged according to the electricity data of acquisition, if driving
State then enters step s2), if on-position then enters step s3)；
S2) according to step s1) acquisition electricity data, determine the current energy storage of load demand power and power energy-storage module
Amount, according to the startup of determining result self adaptive control fuel cell module and power energy-storage module, in control fuel cell mould
When block is started, the fuel cell pack of each parallel connection is started by the way of taking turns starting；
S3) according to step s1) electricity data of acquisition, the current energy storage capacity of power energy-storage module is determined, according to determining
As a result the braking process of self adaptive control automobile.
Preferably, the step s2) include：
S21) according to step s1) acquisition electricity data, determine the current storage of load demand power and power energy-storage module
Energy；
S22) judge whether load demand power is not less than the reference power of automotive interior setting, if then entering step
S23), if otherwise entering step s24)；
S23 all fuel cell packs) are opened by way of taking turns starting, and judge the current storage of power energy-storage module
Whether energy refers to the lower threshold of energy storage capacity not less than power energy-storage module, if then startup power energy-storage module, if otherwise
Close power energy-storage module；
S24) judge whether the current energy storage capacity of power energy-storage module is referred to not less than power energy-storage module under energy storage capacity
Threshold value is limited, if then opening part fuel cell pack by way of taking turns starting, reaches the energy that fuel cell module provides
To load demand power, if otherwise entering step s25)；
S25 all fuel cell packs) are opened by way of taking turns starting, are work(while electricity is provided for load
Rate energy-storage module, which charges to, reaches the upper limit threshold that power energy-storage module refers to energy storage capacity, and return to step s24).
Preferably, the step s3) include：
S31) according to step s1) electricity data of acquisition, determine the current energy storage capacity of power energy-storage module；
S32) judge whether the current energy storage capacity of power energy-storage module is referred to not less than power energy-storage module under energy storage capacity
Threshold value is limited, if automobile is then controlled to carry out mechanical braking, if otherwise entering step s33)；
S33) controlling the electric motor operation in automobile, recycling braking energy charges for power energy-storage module in generating state
To reach power energy-storage module refer to energy storage capacity upper limit threshold, and return to step s32).
Preferably, the mode that takes turns starting is specially：Take fuel cell module is currently up number and fuel electricity
The remainder of the quantity division result of pond module fuel cells heap starts the fuel cell identical with the remainder number first
Heap accordingly opens subsequent fuel cell pack further according to load demand power.
Compared with prior art, the invention has the advantages that：
(1) composite fuel cell power-supply system proposed by the present invention, by by original single battery pile become it is multiple simultaneously
The fuel cell pack of connection, so that the response area of each fuel cell pack reduces, so that air distributes, heat is distributed,
Moisture is matched and electric current distribution is more uniform, then so that the consistency of power-supply system is promoted；Simultaneously manufacture it is multiple small and
Join fuel cell pack, compared with manufacturing single big fuel cell pack, substantially reduce the pile response area of fuel cell pack,
So as to reduce the difficulty of manufacture and cost, while also reduce the cost of detection；Simultaneously because each fuel cell pack is phase
Mutual parallel connection, therefore in fuel cell pack out of the ordinary when something goes wrong, corresponding battery pile need to be only replaced, repair is easy and can
To greatly improve the reliability of system.
(2) each fuel cell pack is connect with a DC/DC converter, while power energy-storage travelling wave tube also becomes with DC/DC
Parallel operation connects, so as in the voltage voltage stabilizing to the operating voltage of load by fuel cell, realize the stability of power supply, from
And improve the stability of whole system.
(3) power energy-storage travelling wave tube can be power type battery or super capacitor or other can carry out electricity storage
Power-type component, can flexibly be selected according to actual conditions, therefore the scope of application of whole system can be improved.
(4) data acquisition module includes load current Acquisition Circuit, load voltage Acquisition Circuit and power energy-storage module electricity
Acquisition Circuit is pressed, passes through the cooperation of this three, it may be determined that determine the inside of power energy-storage module needed for load while power
Charge condition, so as to determine the working condition of fuel cell module according to the combination of two situations and whether need work(
The cooperation of rate energy-storage module.
(5) each fuel cell pack in fuel cell module is started by way of taking turns starting, i.e., first every time
First start the fuel cell pack under reference numeral, it is such to open if power supply volume deficiency is then then turned on subsequent fuel cell pack
Flowing mode, which can substantially reduce, disposably to be started this cold start-up mode of all fuel cell packs and is injured caused by lifetime of system,
Meanwhile start single battery pile can also start quickly speed, solve the problems, such as that cold start-up is difficult.
(6) control method proposed by the present invention, according to the current of collected load demand power and power energy-storage module
Energy storage capacity with reference to the current state of automobile, chooses corresponding control mode to start corresponding fuel cell module and power storage
On the one hand energy module can need how much power be provided with how much power, on the other hand also may be used to avoid the waste of energy, i.e. load
Keep sufficient with the inside electricity for ensuring power energy-storage module as far as possible, so that automobile always has spare energy to avoid vapour
The problem of vehicle can not start.
(7) when automobile is in driving condition, if load demand power height then open all fuel cell packs come for
Load supplying if the energy of power energy-storage module is sufficient at this time, is then powered so that automobile drives in preferable for automobile together
Dynamic transport condition, if the energy of power energy-storage module is inadequate, is then not turned on power energy-storage module and powers for it, so that it is guaranteed that
Enough spare energy are had in automobile in case of need, ensure the stabilization of running car；And if load demand power not
Height is then powered for it by part of fuel battery pile, energy dissipation is avoided, if the energy of power energy-storage module is not at this time
Abundance can also then utilize fuel cell pack to charge for power energy-storage module, realize the efficient utilization of energy.
(8) if automobile is in braking process, then mechanical braking is then directly taken in power energy-storage module energy abundance
Energy dissipation is avoided, is then power energy storage using the braking energy of motor recycling if power energy-storage module energy is inadequate
Module charges, and realizes the efficient utilization of energy, saves cost.
(9) in control method proposed by the present invention, each fuel cell pack in fuel cell module is by taking turns starting
Mode started, i.e., every time first start reference numeral under fuel cell pack, if after power supply volume deficiency is then then turned on
Continuous fuel cell pack, such Starting mode, which can substantially reduce, disposably starts this cold start-up side of all fuel cell packs
Formula is injured caused by lifetime of system, meanwhile, start single battery pile can also start quickly speed, it is difficult to solve cold start-up
Problem.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the flow chart of control method in the present invention；
Fig. 3 is the detailed process figure of control method in the present embodiment；
Wherein, 1 is composite power source controller, and 2 be fuel cell pack, and 3 be DC/DC converters, and 4 be power energy-storage travelling wave tube, 5
It is load current Acquisition Circuit for load voltage Acquisition Circuit, 6,7 be power energy-storage module voltage collection circuit.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
In order to solve the problems, such as that existing fuel cell system manufacture is difficult and cold start-up is difficult, one kind is present embodiments provided
Composite fuel cell power-supply system, including：Fuel cell module includes the fuel cell pack of multiple parallel connections, for being carried for automobile
For main power source；Power energy-storage module, for providing peak power for automobile；Data acquisition module, respectively with power energy storage
Module is connected with the load in automobile, for acquiring the related electricity data of automotive interior；Composite power source controller, respectively with combustion
Material battery module, power energy-storage module are connected with data acquisition module, for the related electricity according to data collecting module collected
Data control the startup and closing of fuel cell module and power energy-storage module, the fuel cell module are controlled to be started
When, the fuel cell pack of each parallel connection is started by the way of taking turns starting.
Wherein, fuel cell module further includes multiple first DC/DC converters, each first DC/DC converters respectively with
Load in fuel cell pack, automobile is connected with composite power source controller, quantity and the fuel cell pair of the first DC/DC converters
Quantity match.Power energy-storage module includes power energy-storage travelling wave tube and the 2nd DC/DC converters, the 2nd DC/DC converters point
It is not connect with the load in power energy-storage travelling wave tube, automobile and composite power source controller.Power energy-storage travelling wave tube includes power type battery
Or super capacitor or other can carry out the power-type component of electricity storage, can voluntarily be selected according to actual conditions.
Data acquisition module includes load current Acquisition Circuit, load voltage Acquisition Circuit and power energy-storage module voltage collection circuit,
Load current Acquisition Circuit with composite power source controller with after the load in series in automobile, connecting；Load voltage Acquisition Circuit with
After load is in parallel, it is connect with composite power source controller；After power energy-storage module voltage collection circuit is in parallel with power energy-storage module,
It is connect with composite power source controller.The mode taken turns starting is specially：Take fuel cell module is currently up number and fuel
The remainder of the quantity division result of battery module fuel cells heap starts the fuel cell identical with the remainder number first
Heap accordingly opens subsequent fuel cell pack further according to load demand power.
Based on the structure of the composite fuel cell power-supply system, the control method of the system as shown in Fig. 2, it is main include under
Row step：
S1 the electricity data of automotive interior) is acquired, automobile current state is judged according to the electricity data of acquisition, if driving
State then enters step s2), if on-position then enters step s3)；
S2) according to step s1) acquisition electricity data, determine the current energy storage of load demand power and power energy-storage module
Amount, according to the startup of determining result self adaptive control fuel cell module and power energy-storage module, in control fuel cell mould
When block is started, the fuel cell pack of each parallel connection is started by the way of taking turns starting, including：
S21) according to step s1) acquisition electricity data, determine the current storage of load demand power and power energy-storage module
Energy；
S22) judge whether load demand power is not less than the reference power of automotive interior setting, if then entering step
S23), if otherwise entering step s24)；
S23 all fuel cell packs) are opened by way of taking turns starting, and judge the current storage of power energy-storage module
Whether energy refers to the lower threshold of energy storage capacity not less than power energy-storage module, if then startup power energy-storage module, if otherwise
Close power energy-storage module；
S24) judge whether the current energy storage capacity of power energy-storage module is referred to not less than power energy-storage module under energy storage capacity
Threshold value is limited, if then opening part fuel cell pack by way of taking turns starting, reaches the energy that fuel cell module provides
To load demand power, if otherwise entering step s25)；
S25 all fuel cell packs) are opened by way of taking turns starting, are work(while electricity is provided for load
Rate energy-storage module, which charges to, reaches the upper limit threshold that power energy-storage module refers to energy storage capacity, and return to step s24)；
S3) according to step s1) electricity data of acquisition, the current energy storage capacity of power energy-storage module is determined, according to determining
As a result the braking process of self adaptive control automobile, including：
S31) according to step s1) electricity data of acquisition, determine the current energy storage capacity of power energy-storage module；
S32) judge whether the current energy storage capacity of power energy-storage module is referred to not less than power energy-storage module under energy storage capacity
Threshold value is limited, if automobile is then controlled to carry out mechanical braking, if otherwise entering step s33)；
S33) controlling the electric motor operation in automobile, recycling braking energy charges for power energy-storage module in generating state
To reach power energy-storage module refer to energy storage capacity upper limit threshold, and return to step s32).
According to above-mentioned system structure and control method, the specific composite fuel cell power-supply system realized in the present embodiment
As shown in Figure 1, including：Composite power source controller 1：It is stored up with load voltage Acquisition Circuit 5, load current Acquisition Circuit 6 and power
Energy module voltage Acquisition Circuit 7 connects, and obtains load voltage, circuit data and power-type energy-storage travelling wave tube voltage data, calculates
Load demand power and power-type energy-storage travelling wave tube energy storage capacity；Fuel cell module：Include multiple fuel cell packs 2, each heap point
Not Lian Jie a DC/DC converter, provide power source for fuel cell car；Power energy-storage module：By multiple power energy storage member
4 connection in series-parallel of part forms, and the type of power energy-storage travelling wave tube 4 includes power type battery, super capacitor etc., to provide peak for automobile
Power；Load voltage Acquisition Circuit 5：It is in parallel with load, acquire the voltage data of load；Load current Acquisition Circuit 6：With load
Series connection acquires load current data；Power energy-storage module voltage collection circuit 7：It is in parallel with power energy-storage module, acquisition power storage
The voltage data of energy module.Final fuel cell module is 300V, rated current 30A by 10 rated voltages in the present embodiment
Fuel cell pack be formed in parallel, overall design power be 90kW.Power energy-storage travelling wave tube is made of ternary battery NCM, design power
For 30kW.
Vehicle launch, load terminal voltage Acquisition Circuit start to acquire Fuel cell electric in real time with current collection circuit
Open-circuit voltage, current value (determine the positive and negative value of electric current, vehicle is in the current direction of driving condition as just according to current direction
To the current direction that vehicle is in on-position is negative sense), ternary battery both end voltage Acquisition Circuit starts to acquire ternary in real time
The open-circuit voltage values of battery module.The voltage and current data that composite power source controller is acquired according to load end, real-time computational load
Demand power；According to ternary battery module both ends open-circuit voltage data, the state-of-charge of ternary battery module is calculated.
When demand power be timing, judge that vehicle is in driving condition, be otherwise on-position.
Definition：
P：Vehicle demand power
E：The current state-of-charge of ternary battery
E1：Ternary battery charge state lower limiting value
E2：Ternary battery charge state upper limit value
As shown in figure 3, when vehicle is in driving condition：
As demand power P=100kW and E >=E1,10 (all) fuel cell packs are started using the mode of taking turns starting
With ternary battery module, fuel cell module provides power as=90kW, and it is 10kW that ternary battery module, which provides power,；
As demand power P=100kW and E ＜ E1,10 (all) fuel cell packs are started using the mode of taking turns starting,
Vehicle power demand is temporarily not being met；
As demand power P=80kW and E >=E1,9 fuel cell packs are started using the mode of taking turns starting, meet vehicle
Demand power；
As demand power P=80kW and E ＜ E1,10 (all) fuel cell packs are started using the mode of taking turns starting,
Power 90kW is provided, wherein 80kW is for providing demand power, remaining power headroom is in the specified charge power of ternary battery module
Interior to charge for it, until ternary battery module state-of-charge reaches upper limit value E2, go to procedure 3 startup, 9 fuel cell packs；
As demand power P=50kW and E >=E1,6 fuel cell packs are started using the mode of taking turns starting, meet vehicle
Demand power；
As demand power P=50kW and E ＜ E1,10 (all) fuel cell packs are started using the mode of taking turns starting,
Power 90kW is provided, wherein 50kW is for providing demand power, remaining power headroom is in the specified charge power of ternary battery module
Interior to charge for it, until ternary battery module state-of-charge reaches upper limit value E2, go to procedure 5 startup, 6 fuel cell modules；
In short, as demand power P ＜ 90kW and E >=E1, start the fuel electricity of respective numbers using the mode of taking turns starting
Chi Dui provides vehicle demand power；As demand power P ＜ 90kW and E ＜ E1, all fuel are started using the mode of taking turns starting
Battery pile, for Partial Power for providing vehicle demand power, remaining power headroom is three in the specified charge power of ternary battery
First battery charging, until ternary battery module state-of-charge reaches upper limit value E2.
When vehicle is in on-position：
As E ＜ E2, electric motor operation charges in generating state, Brake energy recovery to power-type energy-storage travelling wave tube, until
E >=E2 of power-type energy-storage travelling wave tube, charging process terminate, and are transformed into mechanical braking；
As E >=E2, using mechanical braking.
And the control logic that use takes turns starting mode fuel cell pack is specially：
During the 1st startup of automobile, first DC/DC converter is controlled to start by composite power source controller, it is first corresponding
Fuel cell pack provides startup power, later according to load demand power, controls several combustions after first fuel cell pack
Expect that battery pile starts, load demand power is provided；
During the 2nd startup of automobile, second DC/DC converter is controlled to start by composite power source controller, it is second corresponding
Fuel cell pack provides startup power, later according to load demand power, controls several combustions after second fuel cell pack
Expect that battery pile starts, load demand power is provided；
When automobile n-th starts, n-th of DC/DC converter is controlled to start by composite power source controller, corresponding n-th of combustion
Expect that battery pile provides startup power, later according to load demand power, control several fuel electricity after n-th of fuel cell pack
Chi Dui starts, and provides load demand power；
When automobile starting number is more than fuel cell pack number, after the number of starts is taken to be divided by with fuel cell pack number
Remainder determines that the fuel cell pack started is numbered according to remainder values, recycles successively later.
Claims (10)
1. a kind of composite fuel cell power-supply system, which is characterized in that the system comprises：
Fuel cell module includes the fuel cell pack of multiple parallel connections, for providing main power source for automobile；
Power energy-storage module, for providing peak power for automobile；
Data acquisition module is connect respectively with the load in power energy-storage module and automobile, for acquiring the correlation of automotive interior
Electricity data；
Composite power source controller is connect respectively with fuel cell module, power energy-storage module and data acquisition module, for basis
The related electricity data of data collecting module collected controls the startup and closing of fuel cell module and power energy-storage module, control
When making the fuel cell module and being started, the fuel cell pack of each parallel connection is started by the way of taking turns starting.
2. composite fuel cell power-supply system according to claim 1, which is characterized in that the fuel cell module also wraps
Include multiple first DC/DC converters, each first DC/DC converters respectively with the load in fuel cell pack, automobile and
Composite power source controller connects, and the quantity and the quantity of fuel cell pair of the first DC/DC converters match.
3. composite fuel cell power-supply system according to claim 1, which is characterized in that the power energy-storage module includes
Power energy-storage travelling wave tube and the 2nd DC/DC converters, the 2nd DC/DC converters respectively in power energy-storage travelling wave tube, automobile
Load is connected with composite power source controller.
4. composite fuel cell power-supply system according to claim 3, which is characterized in that the power energy-storage travelling wave tube includes
Power type battery or super capacitor.
5. composite fuel cell power-supply system according to claim 1, which is characterized in that the data acquisition module includes
Load current Acquisition Circuit, load voltage Acquisition Circuit and power energy-storage module voltage collection circuit, the load current acquisition
Circuit with composite power source controller with after the load in series in automobile, connecting；The load voltage Acquisition Circuit is in parallel with load
Afterwards, it is connect with composite power source controller；After the power energy-storage module voltage collection circuit is in parallel with power energy-storage module, with answering
Close power-supply controller of electric connection.
6. composite fuel cell power-supply system according to claim 1, which is characterized in that the mode taken turns starting has
Body is：Take fuel cell module is currently up the remaining of number and the quantity division result of fuel cell module fuel cells heap
Number starts the fuel cell pack identical with the remainder number, subsequent combustion is accordingly opened further according to load demand power first
Expect battery pile.
7. a kind of control method of composite fuel cell power-supply system, which is characterized in that the method includes the following steps：
S1 the electricity data of automotive interior) is acquired, automobile current state is judged according to the electricity data of acquisition, if driving condition
Then enter step s2), if on-position then enters step s3)；
S2) according to step s1) electricity data of acquisition, determine the current energy storage capacity of load demand power and power energy-storage module,
According to the startup of determining result self adaptive control fuel cell module and power energy-storage module, control fuel cell module into
When row starts, the fuel cell pack of each parallel connection is started by the way of taking turns starting；
S3) according to step s1) electricity data of acquisition, the current energy storage capacity of power energy-storage module is determined, according to determining result
The braking process of self adaptive control automobile.
8. the control method of composite fuel cell power-supply system according to claim 7, which is characterized in that the step
S2) include：
S21) according to step s1) electricity data of acquisition, determine the current energy storage capacity of load demand power and power energy-storage module；
S22) judge whether load demand power is not less than the reference power of automotive interior setting, if then entering step s23),
If otherwise enter step s24)；
S23 all fuel cell packs) are opened by way of taking turns starting, and judge the current energy storage capacity of power energy-storage module
Whether the lower threshold of energy storage capacity is referred to not less than power energy-storage module, if then startup power energy-storage module, if otherwise closing
Power energy-storage module；
S24) judge whether the current energy storage capacity of power energy-storage module refers to the lower limit threshold of energy storage capacity not less than power energy-storage module
Value if then opening part fuel cell pack by way of taking turns starting, makes the energy that fuel cell module provides reach negative
Demand power is carried, if otherwise entering step s25)；
S25 all fuel cell packs) are opened by way of taking turns starting, are power storage while electricity is provided for load
Energy module, which charges to, reaches the upper limit threshold that power energy-storage module refers to energy storage capacity, and return to step s24).
9. the control method of composite fuel cell power-supply system according to claim 7, which is characterized in that the step
S3) include：
S31) according to step s1) electricity data of acquisition, determine the current energy storage capacity of power energy-storage module；
S32) judge whether the current energy storage capacity of power energy-storage module refers to the lower limit threshold of energy storage capacity not less than power energy-storage module
Value, if automobile is then controlled to carry out mechanical braking, if otherwise entering step s33)；
S33) controlling the electric motor operation in automobile, recycling braking energy reaches to be charged to for power energy-storage module in generating state
The upper limit threshold of energy storage capacity, and return to step s32 are referred to power energy-storage module).
10. the control method of composite fuel cell power-supply system according to claim 7, which is characterized in that it is described in turn
The mode of startup is specially：Take the quantity for being currently up number and fuel cell module fuel cells heap of fuel cell module
The remainder of division result starts the fuel cell pack identical with the remainder number first, corresponding further according to load demand power
Open subsequent fuel cell pack.
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