CN206564486U - A kind of solar charging discharging controller - Google Patents
A kind of solar charging discharging controller Download PDFInfo
- Publication number
- CN206564486U CN206564486U CN201720226029.0U CN201720226029U CN206564486U CN 206564486 U CN206564486 U CN 206564486U CN 201720226029 U CN201720226029 U CN 201720226029U CN 206564486 U CN206564486 U CN 206564486U
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- circuit
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- circuits
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of solar charging discharging controller.Including photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits, MCU control circuit；MCU control circuit is connected to ADC sample circuits, timing control circuit, display unit and discharge circuit；Wherein, ADC sample circuits gather the electric signal of photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits and discharge circuit respectively；The electric signal of ADC sample circuits collection is transported to discharge circuit described in MCU control circuit and a voltage detection unit is connected in series to load.The utility model is connected to solar panel by using photosensitive switch circuit, the once switch charged by photosensitive switch circuit as battery, the secondary switch charged by counnter attack charging circuit as second of battery, control time section is set by timing control circuit, the discharge and recharge relation between solar panel and battery is effectively improved, the service life of battery is improved.
Description
Technical field
The utility model belongs to solar control technical field, more particularly to a kind of solar charging discharging controller.
Background technology
Controller for solar full name is solar charging discharging controller, is to be used in solar power system, controls multichannel
Automatic control equipment of the solar cell array to battery charging and battery to solar inverter load supplying.It is right
The charge and discharge condition of battery is provided and controlled, and controls solar module and electric power storage according to the power supply requirement of load
Pond is exported to the electric energy of load, is the core control portions of whole photovoltaic power supply system.
Controller for solar uses high-speed CPU microprocessor and high-precision A/D analog-digital converters, is that a Microcomputer Data is adopted
Collection and monitor control system.Both the current working condition of photovoltaic system can be quickly gathered in real time, and the work letter at PV stations is obtained at any time
Breath, can accumulate in detail again PV station historical data, for assess PV system designs reasonability and checking system part quality can
Accurate and sufficient foundation is provided by property.In addition, controller for solar also has serial communication data transfer function, can will be many
Managed concentratedly and far distance controlled individual photovoltaic system substation.
Composition solar electric power supply system mainly has a solar cell module, chargeable storage and charge and discharge between the two
Electric controller.Charging-discharging controller is used as the tie between connection solar cell module and battery, the conjunction of its control mode
Rationality determines the cost of solar cell module and the life-span of battery.Particularly now as the main material of solar cell
The price of material high purity silicon grows to even greater heights, and the lead of manufacture battery, and its price is also rising steadily.How solar energy is improved
The utilization rate of battery component, the service life for improving battery just seems especially important.
Utility model content
The purpose of this utility model is to provide a kind of solar charging discharging controller, connected by using photosensitive switch circuit
Solar panel is connected to, the once switch charged by photosensitive switch circuit as battery is made by counnter attack charging circuit
For the secondary switch of second of battery charging, control time section is set by timing control circuit, the existing sun is solved
The service lifetime of accumulator of energy charging-discharging controller is low, and photoelectric transformation efficiency is slow, the problems such as controlling cumbersome.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions：
The utility model is a kind of solar charging discharging controller, including photosensitive switch circuit, counnter attack charging circuit, BUCK
Charging circuit, MCU control circuit；The photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits are sequentially connected；It is described
MCU control circuit is connected to ADC sample circuits, timing control circuit, display unit and discharge circuit；Wherein, the ADC
Sample circuit gathers the electric signal of photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits and discharge circuit respectively；It is described
ADC sample circuits collection electric signal be transported to discharge circuit described in MCU control circuit be connected in series to a voltage detection unit it is negative
Carry, the voltage signal of the voltage detection unit detection discharge circuit and loaded work piece.
Further, the photosensitive switch circuit is connected to solar panel, and first is used as by photosensitive switch circuit
Step judges daytime and night, and then the once switch charged as battery, judges that battery charges by counnter attack charging circuit
Whether it is full of, is used as the secondary switch of second of battery charging.
Further, the BUCK charging circuits are connected with battery, and the charging to battery, BUCK charging circuits are same
Walk afterflow BUCK topological circuits.
Further, the display unit uses LCD display.
Further, the ADC sample circuits are also connected to solar panel, gather the telecommunications of solar panel
Number.
Further, the electric signal includes voltage signal, current signal and temperature signal.
The utility model has the advantages that：
1st, the utility model reduces lower power consumption caloric value by using the component of low-power consumption, reduces controller
Volume, saves product cost.
2nd, the utility model is by using MCU control circuit, using DC-DC converter so that charging circuit impedance and the sun
Energy internal battery impedance matching, so as to obtain solar cell maximum power output, peak power utilization rate improves 30%, improves
The utilization rates of solar components.
3rd, the utility model is connected to solar panel by using photosensitive switch circuit, is made by photosensitive switch circuit
Judge daytime and night, and then the once switch charged as battery for the first step, electric power storage is judged by counnter attack charging circuit
Whether pond charging is full of, and as the secondary switch of second of battery charging, control time section is set by timing control circuit,
It is high with control flexibility, have wide range of applications；The discharge and recharge being effectively improved between solar panel and battery is closed
System, improves the service life of battery.
Certainly, implement any product of the present utility model to it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is a kind of system diagram of solar charging discharging controller of the present utility model；
Fig. 2 is load current sample circuit figure；
Fig. 3 is solar panels potential circuit figure；
Fig. 4 is battery tension sample circuit figure；
Fig. 5 is solar energy input current sample circuit figure；
Fig. 6 is MCU control circuit figure；
Fig. 7-9 is the driving principle figure and counnter attack part driving principle figure of BUCK topologys；
Figure 10 is BUCK live part circuit theory diagrams.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belongs to the scope of the utility model protection.
Refer to shown in Fig. 1, the utility model is a kind of solar charging discharging controller, including it is photosensitive switch circuit, anti-
Reverse charge circuit, BUCK charging circuits, MCU control circuit；Photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits according to
Secondary connection；MCU control circuit is connected to ADC sample circuits, timing control circuit, display unit and discharge circuit.
Wherein, ADC sample circuits gather photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits and electric discharge respectively
The electric signal of circuit；The electric signal of ADC sample circuits collection is transported to MCU control circuit；Discharge circuit and a voltage detecting list
Member is connected in series to load, the voltage signal of the voltage detection unit detection discharge circuit and loaded work piece.
Wherein, photosensitive switch circuit is connected to solar panel, and being used as the first step by photosensitive switch circuit judges white
It and night, and then the once switch charged as battery, judge whether battery charging is full of by counnter attack charging circuit,
It is used as the secondary switch of second of battery charging.
Wherein, BUCK charging circuits are connected with battery, the charging to battery.BUCK charging circuits are synchronous freewheeling
BUCK topological circuits.BUCK charging circuits replace diode using the metal-oxide-semiconductor of the low conducting internal resistances of MOS, reduce lower power consumption
Caloric value, reduces controller volume, saves product cost.
Wherein, display unit uses LCD display.
Wherein, ADC sample circuits are also connected to solar panel, gather the electric signal of solar panel.
Wherein, electric signal includes voltage signal, current signal and temperature signal.
Lead acid battery charge when institute is reduced by the charge control mode of constant voltage constant current charging and MCU control circuit
The polarization reaction of generation, improves charge efficiency, is connected to solar panel by quick on-off circuit, passes through photosensitive switch circuit
Judge daytime and night, and then the once switch charged as battery as the first step, judge to store by counnter attack charging circuit
Whether battery charging is full of, and as the secondary switch of second of battery charging, has reached the effect of protection battery, has improved
The service life of battery.
Based on the solar charging discharging controller of synchronous freewheeling BUCK topological circuits, it includes solar components and BUCK electricity
The input on road is connected, and the output end of BUCK circuits is connected with battery, and MCU is according to the feedback result and constant pressure and constant of sample circuit
The different phase of stream controls the working condition of BUCK circuits.
LCD display unit constantly receives the information from MCU, intuitively shows all sampled datas of controller and work shape
State, and button operation is supported, for setting the running parameter of product.Drive signal that discharge circuit is provided by MCU is controlled
The operation and closing of load.
Load current sampling is illustrated in figure 2, the sampling of solar energy input current is illustrated in figure 5, is illustrated in figure 3 the sun
Can plate voltage and battery tension as shown in Figure 4 sampling.Current sample part amplifies 47 times to the input signal of low pressure, then passes through
Protection circuit R14, D1 and R23, D3 access MCU AD thief hatch, the ability in sampling of the weak signal of raising.Adopt voltage sample part
The input voltage of solar panels and battery is carried out with the resistance of 1% precision partial pressure again by protection circuit R38, D5 and R39,
D6 accesses MCU AD thief hatch.
As shown in fig. 6, system MCU of the present utility model uses STM32F103C8T6, using outside 8MHZ High Precision Crystal Oscillators
72MHZ system frequency is produced after 9 frequencys multiplication.Using outside 3.3V as the reference voltage of system, i.e. MCU the 9th pin, ginseng
Examination point is labeled as VDDA, and the datum mark as operational amplifier is carried out with this.It is configured to while 6 groups of data of sampling, 2 groups of output amounts to
The pwm signal that 5 tunnel frequencies and dutycycle are different from as whole system drive signal, while enable two groups USART mouthfuls, its
In one group to controller LCD provide display content, another group be used for as controller and PC connectivity port.
As Figure 7-9, the driving chip U6 of this controller uses the IR2110 drivers that IR companies of the U.S. produce.It is simultaneous
There are light-coupled isolation (small volume) and electromagnetic isolation (speed is fast), while having high-end suspension bootstrapping function, it is possible to reduce
The number of driving power supply.The pwm control signal of MCU outputs is 3.3V pulses, is driven respectively after U6 electrical level match and conversion
The decompression tube and continued flow tube of dynamic BUCK circuits.Using the input and output of light-coupled isolation drive signal, prevent high-pressure side seal in it is low
Pressure side produces dangerous.
As shown in Figure 10, the BUCK topological circuits of this controller are relative to conventional BUCK circuits, using low conducting internal resistance
Metal-oxide-semiconductor replace continued flow tube.
S+ and S- is respectively the input positive pole and negative pole of solar energy, BAT+ and the both positive and negative polarity that BAT- is battery in figure
The Q2 in the upper left corner in figure is just turned on only when solar recharging electric current reaches certain value by programme-control, not only
Loss can be reduced, and Q2 also acts as anti-reverse and battery anti-return the effect of solar energy.
Because the characteristic solar panels of solar panels in low-voltage substantially will not output current, for solar energy not
Need Boost charging circuits, and solar energy maximum power point voltage to all higher so needing Buck circuits to come to electric power storage
Pond is charged, and prevents battery clamper solar panels voltage, reduces power.
Buck operation principles：
When input voltage is higher than battery tension.Q3, Q4, Q6, Q7, L3 collectively constitute BUCK circuits.
Wherein Q3, Q4, which are simultaneously turned on, is simultaneously switched off, and Q6, Q7, which are simultaneously turned on, to be simultaneously switched off.
When Q3, Q4 are turned on, electric current flows through L3 and linearly increasing, inductance L3 storage electric energy, on the voltage and battery on L3
Voltage Vbt series connection, close to input voltage Vsolar.So decompression charging will not clamper solar panels voltage
When Q3, Q4 disconnect, the electric current on L3 can keep slow and reduce, and L3 both end voltages polarity produces upset and formed higher than storage
The VL of cell voltage, electric current charges a battery by Q6, Q7.VL is gradually decrease to be less than during electric current is gradually reduced
During Vbt, C21 charges to battery
Q3, Q4 are called Q6, Q7 in the time of afterflow of decompression, general Buck circuits in Buck charging processes during disconnecting
Position uses diode, but this controller is by the way of metal-oxide-semiconductor and the common afterflow of diode, an afterflow week
The electric current that continued flow tube is flowed into phase is gradually reduced, afterflow starting stage electric current than larger, so continuous using metal-oxide-semiconductor
Stream, because pressure drop is determined by internal resistance after metal-oxide-semiconductor conducting, and metal-oxide-semiconductor conducting internal resistance is very small.So relative to diode
For caloric value very little.Afterflow later stage electric current can very little, program is calculated automatically disconnects afterflow metal-oxide-semiconductor suitable when,
Using diode continuousing flow, reverse BOOST phenomenons are prevented.
Pressure drop is in 1.2V or so when flowing through 20A electric currents for diode, if the electric current for flowing through diode reaches 20A, then
Loss power P=U*I, 1.2V*20A=24W
Also just say that 24W all produces heat, not only waste the energy but also circuit will produce high temperature, but new-type circuit is used
Metal-oxide-semiconductor afterflow, the conducting of metal-oxide-semiconductor when electric current is sufficiently large for the previous period during afterflow reduces loss, when later stage electric current reduces
Metal-oxide-semiconductor disconnects prevents battery from flowing back using external diode continuousing flow.MOS conducting internal resistances are general in 0.03 Ω.Pass through identical
Loss power P=I*I*R, 20A*20A*0.03 Ω=12W on 20A electric currents, metal-oxide-semiconductor
Loss can be reduced using metal-oxide-semiconductor afterflow as can be seen here, charge efficiency is improved.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
With reference to specific features, structure, material or the feature that the embodiment or example are described be contained in it is of the present utility model at least one
In embodiment or example.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or
Example.Moreover, specific features, structure, material or the feature of description can be in any one or more embodiments or examples
In combine in an appropriate manner.
The utility model preferred embodiment disclosed above is only intended to help and illustrates the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, it is only described embodiment that the utility model is not limited yet.Obviously, according to this theory
The content of bright book, can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably
Principle of the present utility model and practical application are explained, so that skilled artisan can be best understood by and utilize this
Utility model.The utility model is only limited by claims and its four corner and equivalent.
Claims (6)
1. a kind of solar charging discharging controller, it is characterised in that：Filled including photosensitive switch circuit, counnter attack charging circuit, BUCK
Circuit, MCU control circuit；
The photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits are sequentially connected；
The MCU control circuit is connected to ADC sample circuits, timing control circuit, display unit and discharge circuit；
Wherein, the ADC sample circuits gather photosensitive switch circuit, counnter attack charging circuit, BUCK charging circuits and electric discharge respectively
The electric signal of circuit；
Wherein, the electric signal of the ADC sample circuits collection is transported to MCU control circuit
Wherein, the discharge circuit and a voltage detection unit are connected in series to load, and the voltage detection unit detects discharge circuit
With the voltage signal of loaded work piece.
2. a kind of solar charging discharging controller according to claim 1, it is characterised in that the photosensitive switch circuit connects
It is connected to solar panel.
3. a kind of solar charging discharging controller according to claim 1, it is characterised in that the BUCK charging circuits with
Battery is connected, the charging to battery.
4. a kind of solar charging discharging controller according to claim 1, it is characterised in that the display unit is used
LCD display.
5. a kind of solar charging discharging controller according to claim 1, it is characterised in that the ADC sample circuits are also
Solar panel is connected to, the electric signal of solar panel is gathered.
6. a kind of solar charging discharging controller according to claim 1 or 5, it is characterised in that the electric signal includes
Voltage signal, current signal and temperature signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226029.0U CN206564486U (en) | 2017-03-09 | 2017-03-09 | A kind of solar charging discharging controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226029.0U CN206564486U (en) | 2017-03-09 | 2017-03-09 | A kind of solar charging discharging controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206564486U true CN206564486U (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720226029.0U Expired - Fee Related CN206564486U (en) | 2017-03-09 | 2017-03-09 | A kind of solar charging discharging controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539821A (en) * | 2018-04-28 | 2018-09-14 | 河南新太行电源股份有限公司 | A kind of power-supply management system and charging and discharging currents sample-taking calculating circuit |
-
2017
- 2017-03-09 CN CN201720226029.0U patent/CN206564486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539821A (en) * | 2018-04-28 | 2018-09-14 | 河南新太行电源股份有限公司 | A kind of power-supply management system and charging and discharging currents sample-taking calculating circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180323 Address after: 230000 room 213, Anhui University Science Park Innovation Building, 2 Tianda Road, Hefei high tech Zone, Anhui Patentee after: Hefei Bosch, energy science and technology limited company Address before: 230000 Hefei City, Anhui Hefei high tech Zone dive East Road No. 27, 3 layer Patentee before: Hefei Listen New Energy Technology Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20200309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |