A kind of pressure photovoltaic cogeneration batteries to store energy control system
Technical field
The present invention relates to a kind of pressure photovoltaic combined generating systems, combine more specifically to a kind of pressure photovoltaic and send out
Electrical storage cell energy storage control system, belongs to field of new energy generation.The present invention is suitable for solar energy can recycle simultaneously with kinetic energy
The application utilized.
Background technique
Pressure photovoltaic combined power generation device generates charge under the effect of external force alternation, while energy will too under sunlight irradiation
Sun can be converted into electric energy, have the features such as small in size, structure is simple, and integrated level is high, no electromagnetic interference, can be laid on walking
The road surfaces such as street, garage exit/entry, highway collect the kinetic energy in pedestrian and car running process, and absorb solar energy, meet
The principles and policies of various countries' new energy development, have a good application prospect in off-grid type pressure photovoltaic combined power generation device.
It is since the quick and amplitude of pressure photovoltaic cogeneration changes characteristics, collection and the storage for the electric energy that generates electricity such as violent
Pressure photovoltaic combined power generation device is a problem for needing to solve, while pressure and the design of the structure of photovoltaic cogeneration are to need
Another to be solved problem, how quickly, stable collection pressure photovoltaic cogeneration electric energy, while structure is simple, integrates
Degree height is the technical problem that those skilled in the art are facing.
In order to guarantee that battery can adapt to the variation of pressure photovoltaic cogeneration unit output voltage, while considering electric power storage
The busbar voltage in pond needs design pressure photovoltaic combined power generation device structure and its energy storage control system.Pressure photovoltaic joint hair
The research and development of electric installation structure and its energy storage control system are this generation of electricity by new energy device energy of pressure photovoltaic cogeneration
The new path of the acquisition of amount, explorative research.
Summary of the invention
The purpose of the present invention is to provide a kind of pressure photovoltaic cogeneration structure and batteries to store energy control systems, use
Technical solution of the present invention, by being depressured the voltage for turning on and off control pressure photovoltaic cogeneration unit of control unit,
The electric energy exported by battery absorption pressure photovoltaic cogeneration unit, and fully consider the charging and busbar voltage of battery
It is required that guaranteeing bus of storage battery voltage in operational envelope while absorption pressure power generation electric energy and photovoltaic power generation electric energy
It is interior, meet security of system and stability requirement, reaches solar energy and kinetic energy recycles purpose, solar power generation conduct simultaneously
Effective supplement of pressure electricity-generating, promotes whole generated energy, and pressure photovoltaic cogeneration uses integrated design, makes full use of whole
Stock utilization is improved in the space of body, and energy storage control system running frequency is high, small from being lost, and is suitable for off-grid type pressure photovoltaic
The applications such as the energy absorption of combined power generation device.
In order to achieve the above objectives, technical solution provided by the invention is:
A kind of pressure photovoltaic cogeneration batteries to store energy control system of the invention, including pressure photovoltaic cogeneration list
Member, decompression control unit, battery, timesharing pulse width modulation controlled unit, the timesharing pulse width modulation controlled unit are pressed
The output voltage of power photovoltaic cogeneration unit and the busbar voltage of battery, and according to the voltage of pressure electricity-generating unit, light
Lie prostrate the voltage of generator unit and the busbar voltage control decompression control unit of battery, the pressure photovoltaic cogeneration unit
It is charged by decompression control unit to battery.
Further, which further includes first voltage detection unit and second voltage detection unit, first electricity
Detection unit is pressed to obtain the output voltage of pressure photovoltaic cogeneration unit, the second voltage detection unit obtains battery
Busbar voltage and send pwm unit to, when pressure photovoltaic cogeneration unit output voltage be greater than battery mother
When line voltage, the output voltage of pressure photovoltaic cogeneration unit sends pwm unit to.
Further, which includes pressure photovoltaic cogeneration element Upg, rectification circuit, switching tube k2, diode D1、
Inductance L and battery Ubat, the pressure photovoltaic cogeneration element Upg, switching tube k2, inductance L, battery Ubat, pressure photovoltaic
Cogeneration element UpgIt is in turn connected into closed circuit, the pressure photovoltaic cogeneration element UpgBoth ends be connected with rectification
Circuit, the input terminal and pressure photovoltaic cogeneration element U of the inductance LpgInput terminal between be provided with diode D1。
Further, the pressure photovoltaic cogeneration element includes pressure electricity-generating element and photovoltaic power generation element, wherein
The pressure electricity-generating element UpgIt is formed by m group branch by parallel combination, that is, Upg,11To Upg,n1Total n unit shape
At first group of series arm, Upg,12To Upg,n2Total n unit forms second group of series arm, Upg,1mTo Upg,nmTotal n unit shape
At m group series arm;
The photovoltaic power generation element UpvIt is formed by m group branch by parallel combination, that is, Upv,11To Upv,n1Total n unit shape
At first group of series arm, Upv,12To Upv,n2Total n unit forms second group of series arm, Upv,1mTo Upv,nmTotal n unit shape
At m group series arm.
Further, the pressure photovoltaic cogeneration unit uses frame-type integral structure, and upper layer is photovoltaic hair
Electricity, lower layer are pressure electricity-generating, form pressure and integrated photovoltaic structure, while the energy of absorption pressure energy and sunlight.
Further, in the pressure photovoltaic cogeneration unit shape of piezoelectricity and photovoltaic be include it is rectangular, round, three
Angular geometry.
Further, the control method of the decompression control unit is:
(a) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in 0~TonIn period, rectified circuit, t
=0 moment, switching tube k2Conducting, pressure photovoltaic cogeneration element UpgOutput voltage passes through k2It is added to inductance L and battery Ubat
On, diode D1Cut-off;The pressure photovoltaic cogeneration element U in a switch periodspgOutput voltage remains unchanged, and passes through electricity
The electric current in L is felt to battery UbatCharging.
(b) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in t=TonMoment, switching tube k2Shutdown, inductance
L passes through diode D1Afterflow, and to battery UbatCharging.
(c) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in t=TsMoment, switching tube k2It is connected again, after
Continue to battery UbatCharging.
Further, as pressure photovoltaic cogeneration element UpgWhen output voltage dynamic change, the TonMoment with
Pressure photovoltaic cogeneration element UpgOutput voltage amplitude size and change, and in pressure electricity-generating and T when photovoltaic power generationonValue
Also different;Moment TonValue is less than TsValue, TsIt is constant, switching tube k2Service time be 0~Ton。
Further, the quantity of the pressure electricity-generating element in pressure photovoltaic cogeneration unit and photovoltaic power generation element, material
Material, arrangement, shape are determine according to actual needs;The output voltage and stress of the pressure photovoltaic cogeneration unit are according to reality
It needs to be determined that.
Using technical solution provided by the invention, compared with existing well-known technique, there is following remarkable result:
(1) a kind of pressure photovoltaic cogeneration batteries to store energy control system of the invention passes through decompression control unit
The output voltage for turning on and off control pressure photovoltaic cogeneration unit, meets the charging requirement of battery, ensure that pressure
Effective charging of the photovoltaic cogeneration unit to battery, and fully consider the voltage and photovoltaic generation unit of pressure electricity-generating unit
Voltage, energy storage control system running frequency is high, from small, the energy suitable for off-grid type pressure photovoltaic combined power generation device is lost
The applications such as absorption;
(2) a kind of pressure photovoltaic cogeneration batteries to store energy control system of the invention, pressure photovoltaic cogeneration
Unit uses integral structure, and upper layer is photovoltaic power generation, lower layer is pressure electricity-generating, using unique Frame Design, forms pressure
With integrated photovoltaic structure, can simultaneously absorption pressure generate energy and sunlight energy, make full use of whole space,
Improve stock utilization;
(3) a kind of pressure photovoltaic cogeneration batteries to store energy control system of the invention is depressured the control of control unit
Method processed meets the charging requirement of battery, has taken into account the busbar voltage range of operation of battery, meets energy storage control system peace
Full property and stability requirement.
Detailed description of the invention
Fig. 1 is a kind of functional block diagram of pressure photovoltaic cogeneration batteries to store energy control system of the invention;
Fig. 2 is pressure photovoltaic cogeneration unit integral structure figure of the invention;
Fig. 3 is the pressure photovoltaic cogeneration element arrays figure of pressure photovoltaic cogeneration unit of the invention;
Fig. 4 is the photovoltaic power generation element arrays figure of photovoltaic generation unit of the invention;
Fig. 5 is decompression control unit circuit diagram of the invention.
Label declaration in schematic diagram:
1, pressure photovoltaic cogeneration unit;2, it is depressured control unit;3, battery;4, second voltage detection unit;5,
Timesharing pulse width modulation controlled unit;6, first voltage detection unit.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
A kind of pressure photovoltaic cogeneration batteries to store energy control system of the invention passes through the open-minded of decompression control unit
With the voltage of shutdown control pressure photovoltaic cogeneration unit, pass through the electricity of battery absorption pressure power generation electric energy and photovoltaic power generation
Can, and fully consider the busbar voltage requirement of the voltage of pressure electricity-generating unit, the voltage of photovoltaic generation unit and battery charging,
Guarantee that bus of storage battery voltage in operational envelope, meets system peace while absorption pressure photovoltaic cogeneration electric energy
Full property and stability requirement, the applications such as energy absorption suitable for off-grid type pressure photovoltaic combined power generation device.
It is shown in Figure 1, a kind of pressure photovoltaic cogeneration batteries to store energy control system of the present embodiment, including pressure light
Lie prostrate cogeneration unit 1, decompression control unit 2, battery 3, second voltage detection unit 4, timesharing pulse width modulation controlled unit 5
With first voltage detection unit 6, which can fully consider the charging and busbar voltage requirement of battery, press absorbing
Guarantee bus of storage battery voltage while power photovoltaic cogeneration electric energy in operational envelope, meets security of system and steady
Qualitative requirement.By first voltage detection unit 6 obtain according to the voltage of pressure electricity-generating unit, photovoltaic generation unit voltage simultaneously
It sends timesharing pulse width modulation controlled unit 5 to, busbar voltage and the transmission of battery 3 is obtained by second voltage detection unit 4
To timesharing pulse width modulation controlled unit 5, timesharing pulse width modulation controlled unit 5 is according to the output of pressure photovoltaic cogeneration unit 1
The busbar voltage of voltage and battery 3 control decompression control unit 2, pressure photovoltaic cogeneration unit 1 are single by decompression control
Member 2 charges to battery 3.
It is shown in Figure 2, a kind of pressure photovoltaic cogeneration batteries to store energy control system of the present embodiment, pressure light
It lies prostrate cogeneration unit 1 and uses integral structure, upper layer is photovoltaic power generation, lower layer is pressure electricity-generating, is set using unique frame
Meter forms pressure and integrated photovoltaic structure, can absorption pressure energy and sunlight simultaneously energy, make full use of whole
Stock utilization is improved in space.
In the present embodiment, pressure photovoltaic cogeneration element includes pressure electricity-generating element and photovoltaic power generation element, wherein
The combined method of pressure electricity-generating element is:The pressure electricity-generating element UpgIt is formed by m group branch by parallel combination,
That is, Upg,11To Upg,n1Total n unit forms first group of series arm, Upg,12To Upg,n2Total n unit forms second group of series connection branch
Road, Upg,1mTo Upg,nmTotal n unit forms m group series arm;It is specific as shown in Figure 3;
The combined method of photovoltaic power generation element is:The photovoltaic power generation element UpvIt is formed by m group branch by parallel combination,
That is, Upv,11To Upv,n1Total n unit forms first group of series arm, Upv,12To Upv,n2Total n unit forms second group of series connection branch
Road, Upv,1mTo Upv,nmTotal n unit forms m group series arm;It is specific as shown in Figure 4.
The circuit structure of the present embodiment is as shown in figure 5, include pressure photovoltaic cogeneration element Upg, rectification circuit, switch
Pipe k2, diode D1, inductance L and battery Ubat, the pressure photovoltaic cogeneration element Upg, switching tube k2, inductance L, electric power storage
Pond Ubat, pressure photovoltaic cogeneration element UpgIt is in turn connected into closed circuit, the pressure photovoltaic cogeneration element Upg's
Both ends are connected with rectification circuit, the input terminal and pressure photovoltaic cogeneration element U of the inductance LpgInput terminal between be arranged
There is diode D1。
In the present embodiment, decompression control unit is to the control method of the charging of battery:
(a) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in 0~TonIt is single through decompression control in period
The rectification circuit of member, t=0 moment, switching tube k2Conducting, pressure photovoltaic cogeneration element UpgOutput voltage passes through k2It is added to electricity
Feel on L and battery, diode D1Cut-off.The pressure photovoltaic cogeneration element U in a switch periodspgOutput voltage is kept
It is constant, it is charged by the electric current in inductance L to battery.
(b) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in t=TonMoment, k2Shutdown, inductance L pass through
Diode D1Afterflow, and charge to battery.TonMoment changes, the moment with pressure electricity-generating unit output voltage amplitude size
TonValue is less than TsValue, TsIt is constant, switching tube k2Service time be 0~Ton。
(c) as pressure photovoltaic cogeneration element UpgWhen having voltage output, in t=TsMoment, k2It is connected, continues to storage again
Battery charging, meets security of system and stability requirement, the energy absorption etc. suitable for off-grid type pressure photovoltaic cogeneration
Application.
In conclusion pressure photovoltaic cogeneration batteries to store energy control system of the invention includes pressure photovoltaic joint hair
Electric unit, decompression control unit, battery, second voltage detection unit, timesharing pulse width modulation controlled unit and first voltage are examined
Unit is surveyed, obtains output voltage and the transmission of pressure electricity-generating unit and photovoltaic generation unit respectively by first voltage detection unit
Timesharing pulse width modulation controlled unit is given, is detected by second voltage detection unit and is obtained the busbar voltage of battery and send to point
When pulse width modulation controlled unit, according to the different conditions of pressure electricity-generating and photovoltaic power generation, timesharing pulse width modulation controlled unit according to
The busbar voltage control decompression control of the output voltage of pressure electricity-generating unit, the output voltage of photovoltaic generation unit and battery is single
Member, pressure photovoltaic cogeneration unit are charged by decompression control unit to battery.This energy storage control system passes through battery
The electric energy of pressure photovoltaic cogeneration unit output is collected, and fully considers the voltage of pressure electricity-generating unit, photovoltaic generation unit
Voltage and battery bus voltage value, it is ensured that the stable absorption of pressure photovoltaic cogeneration unit generated energy reaches the sun
Purpose can be recycled simultaneously with kinetic energy, can be used for off-grid type pressure photovoltaic combined power generation device, solar power generation is as pressure
Effective supplement of power power generation, promotes whole generated energy, and pressure photovoltaic cogeneration uses integrated design, makes full use of entirety
Space, improve stock utilization, meet countries in the world new energy development principles and policies.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, without creatively designing and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.