CN109204005A - A kind of vehicle-mounted composite supply control system of photovoltaic extended-range and method - Google Patents
A kind of vehicle-mounted composite supply control system of photovoltaic extended-range and method Download PDFInfo
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- CN109204005A CN109204005A CN201810788322.5A CN201810788322A CN109204005A CN 109204005 A CN109204005 A CN 109204005A CN 201810788322 A CN201810788322 A CN 201810788322A CN 109204005 A CN109204005 A CN 109204005A
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- supercapacitor
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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
- B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
- B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of vehicle-mounted composite supply control system of photovoltaic extended-range and method, system include main control unit, hybrid power system, solar panels, Condition Monitoring Unit, composite power source topological structure, energy allocation unit and drive system；Solar panels are used to provide energy to hybrid power system and drive system, and can realize that multiple kinds of energy separates supply model by composite power source topological structure；Hybrid power system is used to provide power supply to drive system；Condition Monitoring Unit monitors the status information of solar panels and hybrid power system, and is transmitted to main control unit；Main control unit passes through control composite power source topological structure and energy allocation unit by receiving status information to carry out energy distribution to drive system；The present invention provides scheme, can make full use of solar energy by supercapacitor, take into account the performance of composite power source, have the advantages that structure is simple and easy to implement, at low cost.
Description
Technical field
The invention belongs to vehicle-mounted composite supply control system technical fields, and in particular to a kind of photovoltaic extended-range is vehicle-mounted compound
Power control system and method.
Background technique
In existing automobile, power and energy are taken into account to power battery pack to meet automobile during starting, acceleration and climbing
The dual requirements of amount, while reclaiming braking energy to greatest extent, supercapacitor combine answering of being constituted with battery
Power-supply system is closed to be widely applied；Currently, the power generation of solar energy microgrid has been widely applied；Using the electricity of solar energy function
Electrical automobile charging station has also obtained application.
Photovoltaic solar can continuously generate electricity, lasting to energize；Existing photovoltaic energy has reached 300W/m2, for more
For number slow-moving vehicle, roof 1.5m2Area be capable of providing more 450W electric energy supply；Currently, the use of supercapacitor
Power is about 300W or so, and supercapacitor can supplement rapidly electricity, and can discharge rapidly electric energy, while super capacitor
The self-discharge characteristics of device also can satisfy daily traveling demand, and the characteristic of fast charging and discharging can be tied well with solar panels
It closes.
But existing composite power source should mostly use bidirectional DC-DC converter or multiple Uniderectional DC-DCs, realize different potentials
The topological structure of battery and supercapacitor；Although this kind of structure can guarantee good performance under high voltage operating condition,
For low-speed electronic automobile, power loss is smaller while not needing to be accurately controlled, and for the application of Uniderectional DC-DC, provide can
Can, bi-directional DC-DC is expensive, is one of increased important cost of composite power source；And existing vehicle-mounted composite power source control
System structure is complicated, stability is poor.
Based on technical problem present in above-mentioned vehicle power supply, there has been no relevant solutions；Therefore there is an urgent need to seek
Effective scheme is sought to solve the above problems.
Summary of the invention
The purpose of the present invention is shortcomings present in view of the above technology, propose that a kind of photovoltaic extended-range is vehicle-mounted compound
Power control system and method, it is intended to solve the problems, such as that existing vehicle-mounted composite power source is at high cost.
The present invention provides a kind of vehicle-mounted composite supply control system of photovoltaic extended-range, includes main control unit, compound electric
Source system, solar panels, Condition Monitoring Unit, composite power source topological structure, energy allocation unit and drive system；Solar energy
Plate is connect with Condition Monitoring Unit and composite power source topological structure respectively；Composite power source topological structure respectively with hybrid power system
It is connected with energy allocation unit；Hybrid power system is also connect with Condition Monitoring Unit；Energy allocation unit also with drive system
Connection；Main control unit is connect with Condition Monitoring Unit, composite power source topological structure and energy allocation unit respectively；Solar energy
Plate is used to provide energy to hybrid power system and drive system, and can realize that multiple kinds of energy supplies by composite power source topological structure
To mode；Hybrid power system is used to provide power supply to drive system；Condition Monitoring Unit monitors solar panels and composite power source
The status information of system, and it is transmitted to main control unit；Main control unit passes through control compound electric by receiving status information
Source topological structure and energy allocation unit are to carry out energy distribution to drive system.
Further, hybrid power system includes lithium-ion-power cell and supercapacitor；Solar panels be used for
Supercapacitor provides power storage or provides electric energy to the motor of drive system；Lithium-ion-power cell is used for drive system
Motor provide electric energy；Supercapacitor provides electric energy to the motor of drive system by DC-DC module.
Further, voltage signal and/or electricity that Condition Monitoring Unit passes through monitoring solar panels and hybrid power system
Signal is flowed, and is transmitted to main control unit.
Further, when the information for monitoring the solar panels and hybrid power system is voltage signal, voltage signal
It is defeated by single chip control unit by voltage stabilizing circuit module and filtering processing module and by single-chip processor i/o oral instructions, and is being shown
It is shown on unit；When the information for monitoring solar panels and hybrid power system is current signal, current signal is turned by signal
Mold changing block is transferred directly to single chip control unit, and shows on the display unit.
Further, composite power source topological structure includes a plurality of branch, multiple relays and boost module；Main control
Unit is by the relay in control composite power source topological structure, so that controlling hybrid power system realizes lithium-ion-power cell
Individually power supply, lithium-ion-power cell and supercapacitor power jointly, supercapacitor is individually powered, solar panels be it is super
Capacitor charging and solar panels are directly motor five kinds of energy supply modes of power supply.
Further, supercapacitor includes the first supercapacitor and the second supercapacitor；Drive system includes electricity
Machine；Solar panels are connect by the first branch and the 4th branch with supercapacitor positive electrode；The first branch by second branch and
The connection of motor anode；Second branch is equipped with third relay；The first branch is passing through third branch and the second supercapacitor just
Pole connection, and third branch road is equipped with the second relay；The first branch passes through the 4th branch and the first supercapacitor positive electrode
Connection；The 4th relay is additionally provided in the first branch, the 4th relay is between second branch and supercapacitor；The second surpass
The cathode of grade capacitor is connected to by the positive of the first relay and the first supercapacitor, or directly with the cathode of solar panels
Connection；The cathode of first supercapacitor is connected to the cathode of solar panels；The cathode of solar panels is by the 5th branch and rises
The input cathode of die block connects；The anode of solar panels passes through the first branch, the 4th relay, third branch, the second relay
Device and the 9th branch are connect with boost module input anode；The output negative pole of boost module and the cathode of motor connect；It rises
The output cathode of die block is connected by the anode of the 7th branch and motor, and the 7th road is equipped with the 7th relay；Solar energy
The cathode of plate also passes through the 8th branch and the cathode of motor connects；Lithium-ion-power cell is connected by the 6th branch and the first branch
Logical, the 6th road is equipped with the 6th relay；The input anode of boost module also passes through the 9th branch and the second relay and
The anode connection of two capacitors.
Further, main control unit is realized by composite power source topology merging hybrid power system to motor a variety of
Energy allocation model:
When solar panels generated output is 230W-270W and when supercapacitor electricity < 95%: third relay closes
It is bonded to second branch, solar panels are powered to motor；Meanwhile first relay be closed to the negative electricity terminal of solar panels,
Two relays are closed to third branch, so that the first supercapacitor and the second supercapacitor are in parallel, the 4th relay closure
To the first branch, charge to supercapacitor；
When solar panels generated output is 230W-270W and when supercapacitor electricity > 95%: third relay closure
To second branch, solar panels are powered directly to motor；
When solar panels generated output is 140W-230W and when supercapacitor electricity < 95%: the first relay closure
It is closed to third branch to the negative electricity terminal of solar panels, the second relay, so that the first supercapacitor and second super
Capacitor is in parallel, and the 4th relay is closed to the first branch to fill to the first supercapacitor and the second supercapacitor in parallel
Electricity；
When supercapacitor electricity > 75%, the first relay is closed to the first supercapacitor positive electrode circuit end, second
Relay is closed to the 9th branch, the 5th relay is closed to the 9th branch, uses the first supercapacitor and the second super electricity
Container is connected powers to boost module, and the 7th relay is closed to the 7th branch and powers to motor；
When supercapacitor electricity > 75%, and when vehicle demand power > 250W, the first relay, which is closed to, the first to be surpassed
Grade capacitor anode circuit end, the second relay is closed to the 9th branch, the 5th relay is closed to the 9th branch, uses first
Supercapacitor and the second supercapacitor are connected powers to boost module, and the 7th relay is closed to the 7th branch and supplies to motor
Electricity, the 6th relay are closed to second branch and are powered using lithium-ion-power cell to motor；
When supercapacitor electricity < 50%, individually motor is given to power using the lithium-ion-power cell, at this time the 6th
Relay is closed to the second branch, and other relays are in an off state.
Further, energy allocation unit is power distributing unit；Power distributing unit includes PWM module and MOSFET
Module；Main control unit receiving status information, and current power demand information is combined, MOSFET module is adjusted by PWM module
The frequency and duty ratio of output, thus control lithium-ion-power cell and supercapacitor is output to the energy of DC bus, it is real
Existing power dividing function.
Further, supercapacitor is connected by the bus of unidirectional step-up DC-DC and motor, with to drive system
Motor provides electric energy；Lithium-ion-power cell is used to provide base power to motor, and supercapacitor is used to provide peak to motor
It is worth power.
The present invention also provides a kind of vehicle-mounted composite power source control methods of photovoltaic extended-range, increase including photovoltaic described in above-mentioned power
The vehicle-mounted composite supply control system of formula；It is further comprising the steps of:
S1: after system electrification, the output power of monitoring solar panels, supercapacitor current electric quantity and driving are first
System demand power；
S2: when solar panels generated output is 230W-270W, then whether judge supercapacitor electricity > 95%；If >
95%, solar panels are powered directly to drive system；If < 95%, solar panels are powered to drive system, while giving super electricity
Condenser charge；
S3: when solar panels generated output is 140W-230W, then whether judge supercapacitor electricity > 75%；If >
75%, supercapacitor and lithium-ion-power cell are powered to drive system simultaneously；If < 75%, by solar panels to super
Grade capacitor charging；
S4: as solar panels generated output<140W, then whether judge supercapacitor electricity>50%；If > 50%, surpass
Grade capacitor is powered directly to drive system；If < 50%, it is powered by lithium-ion-power cell to drive system.
A kind of vehicle-mounted composite supply control system of photovoltaic extended-range provided by the invention and method, can pass through super capacitor
Device makes full use of photovoltaic energy, takes into account the performance of composite power source；And topological structure is realized using a step-up DC-DC
Design；It is charged using solar panels directly to capacitor, structure is simple and easy to implement, realizes under the premise of increasing a small amount of cost
The increase of vehicle continual mileage；Scheme stability provided by the invention is good, at low cost, and can match a variety of automobiles.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is a kind of vehicle-mounted composite supply control system structural schematic diagram of photovoltaic extended-range of the present invention；
Fig. 2 is hybrid power system structural schematic diagram of the present invention；
Fig. 3 is composite power source topological structure schematic diagram of the present invention；
Fig. 4 is observation circuit structural schematic diagram of the present invention；
Fig. 5 is voltage monitoring of the present invention, DC-DC and relay drive circuit schematic diagram；
Fig. 6 is power distributing unit structural schematic diagram of the present invention；
Fig. 7 is a kind of vehicle-mounted composite power source control method flow chart of photovoltaic extended-range of the present invention.
In figure: 1, the first relay；2, the second relay；3, third relay；4, the 4th relay；5, the 5th relay
Device；6, the 6th relay；7, the 7th relay；10, the first branch；20, second branch；30, third branch；40, the 4th branch；
50, the 5th branch；60, the 6th branch；70, the 7th branch；80, the 8th branch；90, the 9th branch.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 to Figure 3, the present invention provides a kind of vehicle-mounted composite supply control system of photovoltaic extended-range, includes master
Control unit, hybrid power system, solar panels, Condition Monitoring Unit, composite power source topological structure, energy allocation unit and
Drive system；Solar panels are connect with Condition Monitoring Unit and composite power source topological structure respectively；Composite power source topological structure point
It is not connect with hybrid power system and energy allocation unit；Hybrid power system is also connect with Condition Monitoring Unit；Energy distribution
Unit is also connect with drive system；Main control unit divides with Condition Monitoring Unit, composite power source topological structure and energy respectively
It is connected with unit；Solar panels are used to provide energy (electric energy) to hybrid power system and drive system, and can pass through compound electric
Source topological structure realizes a variety of electric energy supply models；Hybrid power system is used to provide power supply to drive system；Status monitoring list
The status information of member monitoring solar panels and hybrid power system, and it is transmitted to main control unit；Main control unit passes through reception
Status information, and by control composite power source topological structure and energy allocation unit to carry out energy distribution to drive system, from
And realize the energy distribution control of hybrid power system；Scheme provided by the invention can make full use of photovoltaic energy,
It realizes the increase of vehicle continual mileage, and realizes and electric vehicle vehicle power supply is efficiently utilized and controlled, improve vehicle-mounted compound electric
Source utilization rate reduces cost.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, hybrid power system include lithium from
Sub- power battery and supercapacitor；Solar panels are used to provide power storage to supercapacitor；Lithium-ion-power cell is used
In to the motor of drive system provide electric energy；Supercapacitor provides electric energy to the motor of drive system by DC-DC module；Tool
Body, the present invention uses a step-up DC-DC, and step-up DC-DC is more stable with respect to bi-directional DC-DC, cost is lower, and
It is able to use and is connect with the drive system of the supercapacitor, so that topological structure simply easily realizes that cost is relatively low；Specifically,
Since the matching type selecting of hybrid power system is particularly important, when carrying out composite power source matching, it is first depending on vehicle highest
Speed of operation, the parameter of electric machine and target continual mileage calculate instantaneous power demands, calculation formula according to formula are as follows:
In formula:Trq Indicate motor torque,it For system slowdown ratio,ηT For system effectiveness,rFor radius of wheel, f is road rolling
Dynamic resistance coefficient,CD For air resistance coefficient,AFor front face area,vFor speed,iFor road grade,δIt converts for vehicle gyrating mass and is
Number,mFor complete vehicle quality.
After calculating instantaneous power demands, total energy consumption demand W can be obtained according to operating condition speed data integral；Obtain vehicle row
After the power for sailing fixed mileage, battery pack power matching are as follows:
W=Wbattery=DOU × Ubattery×Cbattery/1000
In formula:Wbattery For the actual energy (kWh) of battery group；DOUFor the average working voltage (V) of battery group；Ubattery For battery depth of discharge, value is between 0~1；Cbattery For the capacity (Ah) of battery；
Obtain battery total voltage and total capacity after, can be determined according to monomer parameter battery pack series and parallel mode and
The concrete form of vehicle power supply；To improve supercapacitor utilization efficiency and reducing DC-DC converter power loss, super capacitor
The ceiling voltage of device is not higher than battery voltage；For the power applications of 36V300W, composite power source is selected
18650 lithium-ion-power cell of monomer of 3.7V2600mah and the supercapacitor device of common 2.7V500F；Capacitor is by list
Body six first series connection become the super capacitor modules of 16V83F, and two groups of super capacitor module series connection sides are used when electric discharge
Formula, capacity 32V165F, continuous discharge electric current 8A, discharge time measurement is about 120s, and instant discharge current is more than 30A.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, solar energy photovoltaic panel power output energy
It is enough to charge directly to supercapacitor in parallel, save DC-DC module device；According to the matching of battery, selected solar panels
Specification is 270W polycrystal solar panels, crest voltage 30.2V, peak point current 9.07A；Selected motor is that 36V, 300W are straight
Galvanic electricity machine；Meanwhile by controller real-time monitoring supercapacitor end voltage, cut when reaching the 95% of setting ceiling voltage
It is disconnected, guarantee safety；Peak power≤270W of photovoltaic cells, the low-speed electronic vehicle that can be less than 270W for demand power provide
Reliable power；In addition, solar panels directly provide energy for motor in the case where sunny and demand power is less than 270W
Amount, if energy has residue, for supercapacitor charging.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, Condition Monitoring Unit is by monitoring too
The voltage signal and/or current signal of positive energy plate and hybrid power system, and it is transmitted to main control unit；Specifically, work as monitoring
When the information of solar panels and hybrid power system is voltage signal, voltage signal passes through voltage stabilizing circuit module and filtering processing mould
Block is simultaneously defeated by single chip control unit by single-chip processor i/o oral instructions, and shows on the display unit；When monitoring solar panels and again
When the information for closing power-supply system is current signal, current signal is transferred directly to single-chip microcontroller control list by signal conversion module
Member, and show on the display unit；Specifically, the voltage signal of real-time monitoring includes solar panels output voltage, motor side electricity
Pressure, lithium-ion-power cell end voltage and supercapacitor end voltage；In Condition Monitoring Unit, voltage signal passes through bleeder circuit
Carry out voltage conversion, 0~5V standard signal that single-chip microcontroller can identify is converted to by signal, by filtering processing to signal into
Row mean value is extracted；Arduino single chip computer AT MEGA328P-PU chip is used in monitoring unit；Voltage monitoring uses divider resistance
Form；Choosing resistance value is respectively 50K and 5K, and the voltage range of measurement is 0-50V；Diode uses IN4005, Neng Gouyou
Effect prevents electric current reverse flow；Light emitting diode IN4733A can prompt acquisition unit；Capacitor selects 100pF, tool
There is filter action；Finally, single chip control unit is defeated by by single-chip processor i/o oral instructions；Current signal turns after signal is converted
The signal that single-chip microcontroller can identify is turned to, by being defeated by single chip control unit by single-chip processor i/o oral instructions after filtering processing；Electricity
Stream signal includes solar panels output electric current, cell output current and supercapacitor output electric current；Finally, display unit can
Realize display institute's monitoring voltage and current data.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, composite power source topological structure includes
A plurality of branch, multiple relays and boost module；Main control unit passes through the relay in control composite power source topological structure,
To control hybrid power system realize lithium-ion-power cell individually power, lithium-ion-power cell and supercapacitor it is common
Power supply, supercapacitor are individually powered, solar panels are supercapacitor charging and solar panels are directly motor power supply five
Kind energy supply mode；Specifically,
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, supercapacitor includes first super
Capacitor and the second supercapacitor；Drive system includes motor；Solar panels by the first branch 10 and the 4th branch 40 with
Supercapacitor positive electrode connection；The first branch 10 is connected by second branch 20 with motor anode；Second branch 20 is equipped with the
Three relays 3；The first branch 10 is connected to by third branch 30 with the second supercapacitor positive electrode, and is set on third branch 30
There is the second relay 2；The first branch 10 is connected to by the 4th branch 40 with the first supercapacitor positive electrode；In the first branch 10 also
Equipped with the 4th relay 4, the 4th relay 4 is between second branch 20 and supercapacitor；Second supercapacitor is born
Pole is connected to by the first relay 1 with the anode of the first supercapacitor, or is directly connected to the cathode of solar panels；The first surpass
The cathode of grade capacitor is connected to the cathode of solar panels；The cathode of solar panels is inputted by the 5th branch 50 with boost module
Cathode connection；The anode of solar panels passes through the first branch 10, the 4th relay 4, third branch 30, the second relay 2 and the
Nine branches 90 are connect with boost module input anode；The output negative pole of boost module and the cathode of motor connect；Boost module
Output cathode is connect by the 7th branch 70 with the anode of motor, and the 7th branch 70 is equipped with the 7th relay 7；Solar panels
Cathode also passes through the 8th branch 80 and connect with the cathode of motor；Lithium-ion-power cell passes through the 6th branch 60 and the first branch 10
Connection, the 6th branch 60 are equipped with the 6th relay 6；The input anode of boost module also passes through the 9th branch 90 and the second relay
Device 2 is connect with the anode of the second capacitor.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, charge and discharge are carried out to supercapacitor
When operation, energization in parallel, the mode of discharged in series are taken；In such manner, it is possible under the premise of not using balancing disk to greatest extent
Ensure supercapacitor charge balancing；Meanwhile the current overload to guarantee supercapacitor, fuse is added, capacitor height is prevented
Power discharge；The DC-DC of solar panels connection is booster type, avoids reducing cost using bi-directional DC-DC；What the present invention designed
Composite power source topological structure can be realized following functions；Specifically: control unit is compound by composite power source topology merging
Power-supply system realizes multiple kinds of energy allocation model to motor:
First: when solar panels generated output is 230W-270W and supercapacitor electricity < 95%: third relay
Device 3 is closed to second branch 20, and solar panels are powered to motor；Meanwhile first relay 1 be closed to the negative electricities of solar panels
Terminal, the second relay 2 are closed to third branch 30, so that the first supercapacitor and the second supercapacitor are in parallel, the 4th
Relay 4 is closed to the first branch 10, charges to the first supercapacitor and the second supercapacitor；
Second: when solar panels generated output is 230W-270W and supercapacitor electricity > 95%: third relay 3
It is closed to second branch 20, solar panels are powered directly to motor；
Third: when solar panels generated output is 140W-230W and when supercapacitor electricity < 95%: the first relay
Device 1 is closed to the negative electricity terminal of solar panels, the second relay 2 is closed to third branch 30, so that the first supercapacitor
With the parallel connection of the second supercapacitor, the 4th relay 4 is closed to the first branch 10 in parallel the first supercapacitor and the
The charging of two supercapacitors；
4th: when supercapacitor electricity > 75%, the first relay 1 is closed to the first supercapacitor positive electrode electricity
Terminal, the second relay 2 is closed to the 9th branch 90, the 5th relay 5 is closed to the 9th branch 90, uses the first super capacitor
Device and the second supercapacitor are connected powers to boost module, and the 7th relay 7 is closed to the 7th branch 70 and powers to motor；
5th: when supercapacitor electricity > 75%, and when vehicle demand power > 250W, the first relay 1 is closed to
First supercapacitor positive electrode circuit end, the second relay 2 is closed to the 9th branch 90, the 5th relay 5 is closed to the 9th
Road 90 is connected using the first supercapacitor and the second supercapacitor and is powered to boost module, and the 7th relay 7 is closed to the
Seven branches 7 are powered to motor, and the 6th relay 6 is closed to second branch 20 and is powered using lithium-ion-power cell to motor；
6th: when supercapacitor electricity < 50%, individually motor is given to power using lithium-ion-power cell, at this time the
Six relays 6 are closed to second branch 20, and other relays are in an off state.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, energy allocation unit is power distribution
Unit；Power distributing unit includes PWM module and MOSFET module；Main control unit receiving status information, and combine current
Power requirement information, the frequency and duty ratio of the output of MOSFET module are adjusted by PWM module, to control lithium ion power electricity
Pond and supercapacitor are output to the energy of DC bus, realize power dividing function；Specifically, the state of hybrid power system
After information is transferred to the single chip computer AT MEGA328P-PU of main control unit by Condition Monitoring Unit, single-chip microcontroller combines current function
Rate demand information compiles PWM by PWM module and controls the output frequency and duty ratio that program adjusts MOSFET module, to control
Battery processed and supercapacitor are output to the energy of DC bus, realize power dividing function, and supercapacitor passes through booster type
DC-DC is connect with bus, is effectively reduced cost；The basic principle of power distribution are as follows: lithium-ion-power cell generally provides basis
Power, supercapacitor provide peak power requirements；For the power allocation pattern of composite power source, then three poles are passed through by single-chip microcontroller
Pipe realizes the switch control of relay, to realize the switching of corresponding topological structure function.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, supercapacitor is by unidirectionally boosting
The bus of type DC-DC and motor connection, to provide electric energy to the motor of drive system；Lithium-ion-power cell to motor for mentioning
For base power, supercapacitor is used to provide peak power to motor；The advantage of the invention is that super capacitor can be passed through
Device makes full use of photovoltaic energy, takes into account the performance of composite power source, realizes topological structure using a step-up DC-DC
Design；It is charged using solar panels directly to capacitor, structure is simple and easy to implement, realizes vehicle under the premise of increasing a small amount of cost
The increase of continual mileage.
Correspondingly, in conjunction with above scheme, the present invention also provides a kind of vehicle-mounted composite power source control method of photovoltaic extended-range, packets
Include the vehicle-mounted composite supply control system of photovoltaic extended-range described above；It is further comprising the steps of:
S1: after system electrification, the output power of monitoring solar panels, supercapacitor current electric quantity and driving are first
System demand power；
S2: when solar panels generated output is 230W-270W, then whether judge supercapacitor electricity > 95%；If >
95%, solar panels are powered directly to drive system；If < 95, solar panels are powered to drive system, while giving super capacitor
Device charging；
S3: when solar panels generated output is 140W-230W, then whether judge supercapacitor electricity > 75%；If >
75%, supercapacitor and lithium-ion-power cell are powered to drive system simultaneously；If < 75%, by solar panels to super
Grade capacitor charging；
S4: as solar panels generated output < 140W, then judge whether supercapacitor electricity is sufficient；If > 50%, surpass
Grade capacitor is powered directly to drive system；If < 50%, it is powered by lithium-ion-power cell to drive system.
A kind of vehicle-mounted composite supply control system of photovoltaic extended-range provided by the invention and method, can pass through super capacitor
Device makes full use of photovoltaic energy, takes into account the performance of composite power source；And topological structure is realized using a step-up DC-DC
Design；It is charged using solar panels directly to capacitor, structure is simple and easy to implement, realizes under the premise of increasing a small amount of cost
The increase of vehicle continual mileage；Scheme stability provided by the invention is good, at low cost, and can match a variety of automobiles.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (10)
1. a kind of vehicle-mounted composite supply control system of photovoltaic extended-range, which is characterized in that include main control unit, composite power source
System, solar panels, Condition Monitoring Unit, composite power source topological structure, energy allocation unit and drive system；The sun
Energy plate is connect with the Condition Monitoring Unit with the composite power source topological structure respectively；The composite power source topological structure difference
It is connect with the hybrid power system and the energy allocation unit；The hybrid power system also with the Condition Monitoring Unit
Connection；
The energy allocation unit is also connect with the drive system；The main control unit respectively with the status monitoring list
Member, composite power source topological structure and the connection of energy allocation unit；
The solar panels are used to provide energy to the hybrid power system and drive system, and can pass through the composite power source
Topological structure realizes multiple kinds of energy supply model；
The hybrid power system is used to provide power supply to the drive system；
The Condition Monitoring Unit is transmitted to by monitoring the status information of the solar panels and the hybrid power system
The main control unit；
The main control unit passes through the control composite power source topological structure and the energy by receiving the status information
Allocation unit is measured to carry out energy distribution to the drive system.
2. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 1, which is characterized in that the compound electric
Source system includes lithium-ion-power cell and supercapacitor；The solar panels are used to provide electricity to the supercapacitor
It can store or provide electric energy to the motor of the drive system；The lithium-ion-power cell is used for the electricity to the drive system
Machine provides electric energy；The supercapacitor provides electric energy to the motor of the drive system by DC-DC module.
3. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 1, which is characterized in that the state prison
Unit is surveyed by the voltage signal and/or current signal of the monitoring solar panels and the hybrid power system, and is transmitted to
The main control unit.
4. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 3, which is characterized in that described in monitoring
When the information of solar panels and the hybrid power system is voltage signal, the voltage signal passes through voltage stabilizing circuit module and filter
Wave processing module is simultaneously defeated by single chip control unit by single-chip processor i/o oral instructions, and shows on the display unit；Described in monitoring
When the information of solar panels and the hybrid power system is current signal, the current signal is direct by signal conversion module
It is transferred to single chip control unit, and is shown on the display unit.
5. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 2, which is characterized in that the compound electric
Source topological structure includes a plurality of branch, multiple relays and boost module；
The main control unit is by controlling the relay in the composite power source topological structure, to control hybrid power system
Realize that lithium-ion-power cell is individually powered, lithium-ion-power cell and supercapacitor are powered jointly, supercapacitor is independent
Power supply, solar panels are supercapacitor charging and solar panels are directly motor five kinds of energy supply modes of power supply.
6. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 5, which is characterized in that the super electricity
Container includes the first supercapacitor and the second supercapacitor；The drive system includes motor；The solar panels pass through
The first branch and the 4th branch are connect with the supercapacitor positive electrode；The first branch passes through second branch and the motor
Anode connection；The second branch is equipped with third relay；The first branch is super by third branch and described second
Capacitor anode connection, and third branch road is equipped with the second relay；The first branch passes through the 4th branch and institute
State the connection of the first supercapacitor positive electrode；The 4th relay is additionally provided in the first branch, the 4th relay is located at institute
It states between second branch and the supercapacitor；The cathode of second supercapacitor passes through the first relay and described the
The anode connection of one supercapacitor, or be directly connected to the cathode of the solar panels；First supercapacitor is born
Pole is connected to the cathode of the solar panels；The cathode of the solar panels is negative by the 5th branch and boost module input
Pole connection；The anode of the solar panels passes through the first branch, the 4th relay, third branch, the second relay
It is connect with the 9th branch with boost module input anode；The cathode of the output negative pole of the boost module and the motor connects
It connects；The output cathode of the boost module is connect by the 7th branch with the anode of the motor, and the 7th road is equipped with
7th relay；The cathode of the solar panels also passes through the 8th branch and connect with the cathode of the motor；The lithium ion is dynamic
Power battery is connected to by the 6th branch with the first branch, and the 6th road is equipped with the 6th relay；The boosting mould
The input anode of block is also connect by the 9th branch and second relay with the anode of second capacitor.
7. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 6, which is characterized in that the main control
Unit realizes that multiple kinds of energy distributes mould to the motor by hybrid power system described in the composite power source topology merging
Formula:
When solar panels generated output is 230W-270W and supercapacitor electricity < 95%: the third relay closure
To the second branch, the solar panels are powered to the motor；Meanwhile first relay is closed to the solar energy
The negative electricity terminal of plate, second relay are closed to the third branch, so that first supercapacitor and described
Second supercapacitor is in parallel, and the 4th relay is closed to the first branch, charges to supercapacitor；
When solar panels generated output is 230W-270W and supercapacitor electricity > 95%: the third relay is closed to
The second branch, the solar panels are powered directly to the motor；
When solar panels generated output is 140W-230W and when supercapacitor electricity < 95%: the first relay closure
It is closed to the third branch to the negative electricity terminal of the solar panels, second relay, so that described first is super
Capacitor and second supercapacitor are in parallel, and the 4th relay is closed to the first branch to described in parallel connection
First supercapacitor and second supercapacitor charging；
When supercapacitor electricity > 75%, first relay be closed to the first supercapacitor positive electrode circuit end,
Second relay is closed to the 9th branch, the 5th relay is closed to the 9th branch, uses described
One supercapacitor and second supercapacitor, which are connected, gives boost module power supply, and the 7th relay is closed to the
Seven branches are powered to the motor；
When supercapacitor electricity > 75%, and when vehicle demand power > 250W, first relay is closed to described
One supercapacitor positive electrode circuit end, second relay are closed to the 9th branch, the 5th relay is closed to
9th branch is connected using first supercapacitor and second supercapacitor and is supplied to the boost module
Electricity, the 7th relay are closed to the 7th branch and power to the motor, and the 6th relay is closed to described second
Road is powered using the lithium-ion-power cell to the motor；
When supercapacitor electricity < 50%, the motor is individually given to power using the lithium-ion-power cell, it is described at this time
6th relay is closed to the second branch, and other relays are in an off state.
8. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 2, which is characterized in that the energy point
It is power distributing unit with unit；The power distributing unit includes PWM module and MOSFET module；The main control unit
The status information is received, and combines current power demand information, the MOSFET module is adjusted by the PWM module and is exported
Frequency and duty ratio, to control the lithium-ion-power cell and the supercapacitor is output to the energy of DC bus
Amount realizes power dividing function.
9. the vehicle-mounted composite supply control system of photovoltaic extended-range according to claim 2, which is characterized in that the super electricity
Container is connect by unidirectional step-up DC-DC with the bus of the motor, to provide electric energy to the motor of the drive system；Institute
Lithium-ion-power cell is stated for providing base power to the motor, the supercapacitor is used to provide peak to the motor
It is worth power.
10. a kind of vehicle-mounted composite power source control method of photovoltaic extended-range, which is characterized in that any including the claims 1 to 9
The vehicle-mounted composite supply control system of photovoltaic extended-range described in；It is further comprising the steps of:
S1: after system electrification, output power, supercapacitor current electric quantity and the drive system of monitoring solar panels first are needed
Seek power；
S2: when solar panels generated output is 230W-270W, then whether judge supercapacitor electricity > 95%；If > 95%,
Solar panels are powered directly to drive system；If < 95%, solar panels are powered to drive system, while giving supercapacitor
Charging；
S3: when solar panels generated output is 140W-230W, then whether judge supercapacitor electricity > 75%；If > 75%,
Supercapacitor and lithium-ion-power cell are powered to drive system simultaneously；If inadequate, super electricity is given by solar panels
Condenser charge；
S4: as solar panels generated output<140W, then whether judge supercapacitor electricity>50%；If > 50%, super electricity
Container is powered directly to drive system；If < 50%, it is powered by lithium-ion-power cell to drive system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436586A (en) * | 2020-11-26 | 2021-03-02 | 石家庄科林电气股份有限公司 | Power supply system based on double super capacitor sets |
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