CN107565625A - A kind of controller for solar - Google Patents
A kind of controller for solar Download PDFInfo
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- CN107565625A CN107565625A CN201710727152.5A CN201710727152A CN107565625A CN 107565625 A CN107565625 A CN 107565625A CN 201710727152 A CN201710727152 A CN 201710727152A CN 107565625 A CN107565625 A CN 107565625A
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Abstract
The embodiment of the invention discloses a kind of controller for solar, including：MCU processors and the power switch circuit being connected with the MCU processors, the MCU processors, for gathering the output voltage of solar panel and gathering the output voltage of the power switch circuit, according to the magnitude relationship of the output voltage of the solar panel and the output voltage of the power switch circuit, corresponding charging control signal is generated；The power switch circuit, for the voltage and/or electric current according to charging control signal adjustment input to rechargeable battery.Utilize the embodiment of the present invention, it is possible to increase the charge efficiency of controller for solar.
Description
Technical field
The present invention relates to field of energy source developing technology, more particularly to a kind of controller for solar.
Background technology
With the fast development of developmental technology of new energy resources, solar recharging is started with industry, solar energy has without dirt
The advantages of dye, simple noiseless and maintenance, solar energy not only have and filled as inexhaustible regenerative resource
The spatter property and absolute security, the adequate of resource and potential economy divided allows it to have in long-term energy strategy
There is critical role, therefore, become more and more popular by the use of solar energy as power source.
Because solar panel belongs to photovoltaic apparatus (major part is semi-conducting material), it sends out after light irradiates
Third contact of a total solar or lunar eclipse electrical effect produces electric current.Due to attribute and limitation possessed by material and light, its electric current generated is also with ripple
The curve of dynamic property, if the electric current generated is directly filled with rechargeable battery or direct powering load, easily causes and fill
Battery and the damage of load, their life-span is seriously reduced, therefore need first to carry out above-mentioned electric current through controller for solar
Regulation, controller for solar full name is solar charging discharging controller, is mainly used in solar power system, and control multichannel is too
It is positive can the control device that is charged to rechargeable battery of battery array, controller for solar respectively with solar panel and rechargeable battery
It is connected.Wherein, the solar energy of reception is converted to electric energy by solar panel, can be passed the electric energy by controller for solar
Load is transported to, thinks load supplying, meanwhile, under the control of controller for solar by power storage in rechargeable battery, charging
The outside output current of battery, for users to use.
Controller for solar in correlation technique is：Charge parameter is all just set before dispatching from the factory, it is impossible to
The size of the converting electrical energy of solar panel and control voltage swing of the output to rechargeable battery, solar control can not be realized
, so as to cause current charge efficiency relatively low, energy be present in being effectively matched between voltage needed for the output voltage and rechargeable battery of device
The problem of source utilization rate is low.
During the present invention is realized, inventor has found that controller for solar of the prior art has charging current
Small, the problem of charging rate is slow, and voltage range is narrow, and charge efficiency is low, the function of automatically controlling output voltage can not be realized.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of controller for solar, to improve the charging of controller for solar effect
Rate.
To reach above-mentioned purpose, the embodiment of the invention discloses a kind of controller for solar, including：MCU processors and with
The power switch circuit of the MCU processors connection,
The MCU processors, for gathering the output voltage of solar panel and gathering the power switch circuit
Output voltage, closed according to the size of the output voltage of the solar panel and the output voltage of the power switch circuit
System, generates corresponding charging control signal；
The power switch circuit, for according to the charging control signal adjustment input to rechargeable battery voltage and/or
Electric current.
Optionally, the MCU processors, for the output voltage and electricity according to the solar panel collected
Stream, determines the voltage corresponding to maximal input, the voltage and the power according to corresponding to the maximal input are opened
The magnitude relationship of the output voltage on powered-down road, generate corresponding charging control signal；
If being more than, generation reduces input to the charging control signal of the charged battery voltage；
If being less than, the charging control signal of generation increase input to the charged battery voltage；
If being equal to, generate first reduce increase afterwards input to the charged battery voltage charging control signal or generation first
Reduce input after increase to the charging control signal of the charged battery voltage.
Optionally, the MCU processors, it is additionally operable to gather the current voltage of the rechargeable battery, contrasts the charging electricity
The current voltage and the ratio of predetermined comparison voltage and the magnitude relationship of preset value in pond, generate corresponding charging control signal,
If ratio, between the first preset value and the second preset value, generation is inputted to institute with the first pre-set constant current
State the charging control signal of rechargeable battery；
If ratio, between the second preset value and the 3rd preset value, generation is inputted to institute with the second pre-set constant current
State the charging control signal of rechargeable battery；
If ratio is more than the 3rd preset value, generation is inputted to the charge control letter of the rechargeable battery with constant voltage
Number；Wherein, first preset value is less than the second preset value, and the second preset value is less than the 3rd preset value；First pre-set constant electricity
Stream is less than the second pre-set constant current.
Optionally, the power switch circuit, including：Sequential control circuit and electrically connect with the sequential control circuit
Energy-storage travelling wave tube；
The sequential control circuit forms corresponding time sequence status according to the charging control signal, with first to the energy storage
Part transmits electric energy；
The output voltage of the energy-storage travelling wave tube is directly proportional to the voltage of the rechargeable battery to the input.
Optionally, the sequential control circuit includes：Four insulating gate type field effect tubes, the energy-storage travelling wave tube include：One
The sampling resistor of individual inductance and a detection inductive current,
The grid of first insulating gate type field effect tube and the second insulating gate type field effect tube respectively with the MCU processors
TG1 ports are connected with BG1 ports,
The grid of 3rd insulating gate type field effect tube and the 4th insulating gate type field effect tube respectively with the MCU processors
TG2 ports are connected with BG2 ports,
The drain electrode of the source electrode of first insulating gate type field effect tube and the second insulating gate type field effect tube with the inductance
One end is connected, and is connected with the SW1 ports of the MCU processors,
The drain electrode of the source electrode of 3rd insulating gate type field effect tube and the 4th insulating gate type field effect tube with the inductance
The other end is connected, and is connected with the SW1 ports of the MCU processors,
The drain electrode of first insulating gate type field effect tube is connected with the cathode output end of the solar panel, the 3rd insulation
The drain electrode of grid-type FET is connected with the electrode input end of the rechargeable battery,
The source electrode of second insulating gate type field effect tube and the 4th insulating gate type field effect tube with the detection inductive current
One end of sampling resistor be connected, and be connected with the CSP ports of the MCU processors,
It is described detection inductive current sampling resistor the other end ground connection, and with the CSN ports phase of the MCU processors
Even.
Optionally, in addition to：NTC temperature sensors,
Its one end of the NTC temperature sensors connects the TEMPSENSE ports and AVDD ports of the MCU processors,
The other end is connected with the grounding ports of the MCU processors, and the NTC temperature sensors are used to gather outside the rechargeable battery
Temperature, with to the MCU processors send temperature compensation signal；
The MCU processors adjust the predetermined comparison voltage according to the temperature compensation signal.
Optionally, the NTC temperature sensors include：NTC thermistor and potentiometer,
The NTC thermistor is connected with the TEMPSENSE ports of the MCU processors and grounding ports respectively, described
Potentiometer is connected with the TEMPSENSE ports of the MCU processors and AVDD ports respectively.
Optionally, in addition to：First light emitting diode, the second light emitting diode and digital display tube,
The input of first light emitting diode is connected with the STATUS port ends of the MCU processors, output end with
The negative pole of the rechargeable battery plate is connected with the negative pole of the rechargeable battery, for showing charged state；
The input of second light emitting diode is connected with the FAULT port ends of the MCU processors, output end and institute
The negative pole for stating rechargeable battery plate is connected with the negative pole of the rechargeable battery, for showing error message；
The digital display tube being connected with the MCU processors, for showing the voltage and current of the rechargeable battery.
Optionally, the MCU processors pass through wireless communication module and mobile terminal wireless connection, the MCU processors
Charging voltage and charging current are sent to the mobile terminal by the wireless communication module, and the mobile terminal passes through
The wireless communication module sends energization or power-off signal to the MCU processors, to trigger described in the MCU processors control
The energization or power-off of rechargeable battery.
A kind of controller for solar provided in an embodiment of the present invention, including：MCU processors and it is connected with the MCU processors
Power switch circuit, above-mentioned MCU processors, opened for gathering the output voltage of solar panel and gathering above-mentioned power of stating
The output voltage on powered-down road, according to the output voltage of the output voltage of above-mentioned solar panel and above-mentioned power switch circuit
Magnitude relationship, generate corresponding charging control signal；Above-mentioned power switch circuit, for being adjusted according to above-mentioned charging control signal
Input to the voltage of rechargeable battery.The embodiment of the present invention uses the output of the output voltage and controller that compare solar panel
The size of voltage, the time sequence status of power switch circuit is controlled, to control the output voltage of power switch circuit, so as to improve
The charge efficiency of controller for solar.
Certainly, any product or method for implementing the present invention must be not necessarily required to reach all the above excellent simultaneously
Point.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
A kind of structural representation for controller for solar that Fig. 1 is provided by the embodiment of the present invention；
The structural representation for second of controller for solar that Fig. 2 is provided by the embodiment of the present invention；
Four kinds of timing diagrams of the power switch circuit for the controller for solar that Fig. 3 A-3D are provided by the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is low in view of the presence charge efficiency of the controller for solar in correlation technique, it can not realize and automatically control output electricity
The purpose of pressure, based on this, the embodiments of the invention provide a kind of controller for solar and solar recharging system, below by reality
Example is applied to be described.
Controller for solar provided in an embodiment of the present invention, as shown in figure 1, including：MCU processors 101 and with the MCU
The power switch circuit 102 that device 101 connects is managed,
The MCU processors 101, for gathering the output voltage of solar panel 11 and gathering the power switch electricity
The output voltage on road 102, according to the output of the output voltage of the solar panel 11 and the power switch circuit 102 electricity
The magnitude relationship of pressure, generate corresponding charging control signal；
The power switch circuit 102, for the electricity according to charging control signal adjustment input to rechargeable battery 22
Pressure and/or electric current.
Wherein, the output of the input of the MCU processors 101 in embodiment provided by the invention and solar panel 11
End connection, the MCU processors 101 are by gathering various electric signals, and according to the electric signal collected according in above-mentioned MCU processing
Preset program or algorithm in device 101, corresponding control signal is generated, such as passes through the input collection terminal of above-mentioned MCU processors 101
Gather the output voltage of solar panel 11 and output collection terminal gathers the output voltage of above-mentioned power switch circuit 102, root
According to the solar panel 11 collected output voltage and power switch circuit 102 output voltage magnitude relationship and according to
Preset program or algorithm, generate corresponding control signal in above-mentioned MCU processors 101, using the control signal to above-mentioned
Power switch circuit 102 is controlled, and to control the time sequence status of power switch circuit 102, controls the power switch circuit 102
Constant voltage is exported to rechargeable battery 22, and then improves the charge efficiency of controller for solar.
Further, because the electric energy that solar panel 11 converts is influenceed by external environment illumination intensity, predetermined
In time, the electric energy that solar panel 11 exports has certain change, therefore, above-mentioned MCU processors 101, for basis
The output voltage and electric current of the solar panel 11 collected, determine the voltage corresponding to maximal input, according to
The magnitude relationship of the output voltage of voltage and the power switch circuit 102 corresponding to the maximal input, generate phase
The charging control signal answered；
If being more than, generation reduces input to the charging control signal of the rechargeable battery 22；
If being less than, the charging control signal of generation increase input to the rechargeable battery 22；
If being equal to, generate first reduce increase afterwards input to the rechargeable battery 22 charging control signal or generation first increase
Reduce input after big to the charging control signal of the rechargeable battery 22；
The power switch circuit 102, for the electricity according to charging control signal adjustment input to rechargeable battery 22
Pressure.
Specifically, the output voltage and output current of solar panel 11, root are gathered by above-mentioned MCU processors 101
According to the output voltage and output current that collect and it is incorporated in program preset in above-mentioned MCU processors 101 or algorithm (MPPT calculations
Method), disturb resistance and power switch circuit 102 is chained together, under conditions of output voltage is basicly stable, by changing work(
The dutycycle of rate on-off circuit 102, to change by disturbing the average current of resistance, therefore generate the disturbance of electric current.Meanwhile
The output current voltage of solar panel 11 will also change therewith, the output of solar panel 11 before and after being disturbed by measurement
The change of power and voltage, to determine the perturbation direction in next cycle, when perturbation direction is correct, solar panel 11 exports
Power increase, the lower cycle will continue to disturb in the same direction, conversely, disturbing in the opposite direction, in this way, disturbance and observation is repeated
To make the output of solar panel 11 reach maximum power point, and then determination maximal input, so that the solar energy that collects
The output voltage of cell panel 11 is adjusted to the voltage corresponding to the maximal input, so as to further improve controller for solar
Charge efficiency.
Wherein, above-mentioned power switch circuit 102, can include：Sequential control circuit and it is electrically connected with the sequential control circuit
The energy-storage travelling wave tube connect；
The sequential control circuit forms corresponding time sequence status according to the charging control signal, with first to the energy storage
Part transmits electric energy；
The output voltage of the energy-storage travelling wave tube is directly proportional to the voltage of rechargeable battery to the input of the energy-storage travelling wave tube.
Specifically, above-mentioned sequential control circuit includes：Four insulating gate type field effect tubes, the energy-storage travelling wave tube include：One
The sampling resistor 1026 of individual inductance 1025 and a detection inductive current, wherein, as shown in Fig. 2 each in power switch circuit 102
The specific annexation of element and each element and the annexation of the above-mentioned port of MCU processors 101 are：
The grid of first insulating gate type field effect tube 1021 and the second insulating gate type field effect tube respectively with the MCU processing
The TG1 ports of device 101 are connected with BG1 ports, the 3rd insulating gate type field effect tube 1023 and the 4th insulating gate type field effect tube
1024 grid is connected with the TG2 ports of the MCU processors 101 and BG2 ports respectively,
The drain electrode of the source electrode and the second insulating gate type field effect tube of first insulating gate type field effect tube 1021 with the electricity
One end of sense 1025 is connected, and is connected with the SW1 ports of the MCU processors 101, the 3rd insulating gate type field effect tube 1023
The other end of the drain electrode of source electrode and the 4th insulating gate type field effect tube 1024 with the inductance 1025 is connected, and with the MCU
The SW1 ports of processor 101 are connected,
The drain electrode of first insulating gate type field effect tube 1021 is connected with the cathode output end of the solar panel 11,
The drain electrode of 3rd insulating gate type field effect tube 1023 is connected with the electrode input end of the rechargeable battery 22,
The source electrode of second insulating gate type field effect tube and the 4th insulating gate type field effect tube 1024 with the detection inductance
One end of the sampling resistor 1026 of electric current is connected, and is connected with the CSP ports of the MCU processors 101,
It is described detection inductive current sampling resistor 1026 the other end ground connection, and with the CSN of the MCU processors 101
Port is connected.
Specifically, above-mentioned MCU processors 101 are according to the output voltage of the solar panel 11 collected and collect
The magnitude relationship of the output voltage of power switch circuit 102, corresponding charging control signal is generated, so as to control power switch electric
The time sequence status on road 102, so that the magnitude of voltage that the output of power switch circuit 102 is constant, as shown in figs. 3 a-3d, specific four
Planting time sequence status is：
The first situation：When the output voltage of the solar panel 11 collected is more than the power switch circuit collected
During 102 output voltage, then generation reduces input to the charging control signal of the voltage of rechargeable battery 22, to control power switch
The time sequence status of circuit, as shown in Figure 3A, in the decompression workspace, the 3rd insulating gate type field effect tube 1023 begins the timing diagram
Shut-off, the 4th insulating gate type field effect tube 1024 turn on all the time eventually, in the starting point in each cycle, synchronous second insulated-gate type field effect
Should pipe 1022 first turn on, when the second insulating gate type field effect tube 1022 turns on, above-mentioned MCU processors 101 pass through detect electricity
The sampling resistor 1026 of inducing current detects to inductive current, and a slope-compensation slope is added to detection voltage, is detecting
Inductive current is brought down below after reference voltage, and the second insulating gate type field effect tube 1022 closes in the remaining time in the cycle
It is disconnected, and the first insulating gate type field effect tube 1021 is turned on, and the He of the first insulating gate type field effect tube 1021 is utilized in the depressor area
The mode of the alternate conduction of second insulating gate type field effect tube 1022, control the size of the output voltage of power switch circuit 102.
Second of situation：Output voltage and the power switch circuit that collects when the solar panel 11 collected
102 output voltage is close and when entering buck-boost area, then generates first to reduce to increase afterwards and input to the voltage of rechargeable battery 22
Charging control signal, to control the time sequence status of power switch circuit, the timing diagram as shown in Figure 3 B, in each cycle,
If power switch circuit 102 is with the conducting of the second insulating gate type field effect tube 1022 and the 4th insulating gate type field effect tube 1024
As beginning, then the initial working condition of controller is similar with depressor area, and above-mentioned MCU processors 101 are by detecting inductance
The sampling resistor 1026 of electric current detects to inductive current, when detecting inductive current saltus step, the second insulated-gate type field effect
Should pipe 1022 turn off and the first insulating gate type field effect tube 1021 turns on, untill the centre of clock cycle.Then the 4th is exhausted
Edge grid-type FET 1024 turns off and the 3rd insulating gate type field effect tube 1023 turns on, subsequent working condition with press area
In it is similar, by controlling insulating gate type field effect tube M1, M2, M3 and M4 disconnected mode of leading, control power switch circuit 102
The size of output voltage.
The third situation：Output voltage and the power switch circuit that collects when the solar panel 11 collected
102 output voltage is close and when entering voltage boosting-reducing area, then generates first increases and then decreases and inputs to the voltage of the rechargeable battery 22
Charging control signal, to control the time sequence status of power switch circuit, the timing diagram as shown in Figure 3 C, in each cycle,
If power switch circuit 102 is with the conducting of the first insulating gate type field effect tube 1021 and the 3rd insulating gate type field effect tube 1023
As beginning, then the initial working condition of controller is similar with press area, and above-mentioned MCU processors 101 are by detecting inductance electricity
The sampling resistor 1026 of stream detects to inductive current, when detecting inductive current saltus step, the 3rd insulated-gate type field effect
Pipe 1023 turns off and the 4th insulating gate type field effect tube 1024 turns on, untill the centre of clock cycle, then the first insulation
Grid-type FET 1021 turns off and the second insulating gate type field effect tube 1022 turns on, subsequent working condition with depressor area class
Seemingly, by controlling insulating gate type field effect tube M1, M2, M3 and M4 disconnected mode of leading, the output of power switch circuit 102 is controlled
The size of voltage.
4th kind of situation：When the output voltage of the solar panel 11 collected is less than the power switch circuit collected
During 102 output voltage, then generation increase is inputted to the charging control signal of the voltage of rechargeable battery 22, to control power switch
The time sequence status of circuit, as shown in Figure 3 D, in the boosting workspace, the second insulating gate type field effect tube 1022 begins the timing diagram
Shut-off, the first insulating gate type field effect tube 1021 turn on all the time eventually, in the starting point in each cycle, synchronous 3rd insulated-gate type field effect
Should pipe 1023 first turn on, when the 3rd insulating gate type field effect tube 1023 turns on, above-mentioned MCU processors 101 pass through detect electricity
The sampling resistor 1026 of inducing current detects to inductive current, and a slope-compensation slope is added to detection voltage, is detecting
Inductive current is brought down below after reference voltage, and the 3rd insulating gate type field effect tube 1023 closes in the remaining time in the cycle
It is disconnected, and the 4th insulating gate type field effect tube 1024 is turned on, and the He of the 3rd insulating gate type field effect tube 1023 is utilized in the press area
The mode of the alternate conduction of 4th insulating gate type field effect tube 1024, control the size of the output voltage of power switch circuit 102.
It should be noted that if output voltage and the output of solar panel 11 are gathered by above-mentioned MCU processors 101
Electric current, according to the output voltage and output current that collect and MPPT algorithm preset in above-mentioned MCU processors 101 is incorporated in,
Maximal input is determined, then to the defeated of the voltage corresponding to the maximal input and the power switch circuit 102 that collects
Go out voltage to be compared, to control the time sequence status of power switch circuit 102, specific corresponding relation is as described above, here no longer
Repeat one by one.
The output voltage range of PWM controller in correlation technique is in 12V-60V, and it is narrow charge voltage range to be present, charging
The technical problem that electric current is small, charging is slow, and controller for solar only in pressure-increasning state or decompression state, with correlation technique
Compare, the input voltage range of controller for solar provided in an embodiment of the present invention is 6V-80V, output voltage range 5v-
80v, charge voltage range become big, gathered by above-mentioned MCU processors 101 and compare solar panel 11 output voltage and
The size of the output voltage of power switch circuit 102, to generate corresponding control signal to four in power switch circuit 102
The time sequence status of insulating gate type field effect tube (power switch MOS) is controlled, so as to control the output of power switch circuit 102
The size of voltage, ensure that the conversion between boosting, buck, falling-rising pressure and reduced pressure operation pattern is continuous.No matter solar energy
How the input voltage (Vin is the output voltage of solar cell 11) of controller changes, that is to say, that no matter input voltage is high
In, below or equal to output voltage, solar control can be realized by controlling the time sequence status of power switch circuit 102
Output voltage (Vout) constant pressure output of device, so as to improve the charge efficiency of controller for solar.
If the service life in view of to the overcharge of rechargeable battery 22 or undercharge, can influence rechargeable battery 22,
Therefore, the charged state of rechargeable battery 22 is reasonably controlled according to the current electricity of rechargeable battery 22, rechargeable battery 22 will be extended
Usage time, therefore, further improvement has been done on the basis of the embodiment above, above-mentioned MCU processors 101, has been additionally operable to
The current voltage of the rechargeable battery 22 is gathered, contrasts the current voltage of the rechargeable battery 22 and the ratio of predetermined comparison voltage
With the magnitude relationship of preset value, corresponding charging control signal is generated；
If ratio, between the first preset value and the second preset value, generation is inputted to institute with the first pre-set constant current
The charging control signal of rechargeable battery 22 is stated, the dutycycle of power switch circuit is controlled by the control signal, so that power is opened
The output current on powered-down road is adjusted to the first pre-set constant current；
If ratio, between the second preset value and the 3rd preset value, generation is inputted to institute with the second pre-set constant current
The charging control signal of rechargeable battery 22 is stated, the dutycycle of power switch circuit is controlled by the control signal, so that power is opened
The output current on powered-down road is adjusted to the second pre-set constant current；
If ratio is more than the 3rd preset value, generation is inputted to the charge control letter of the rechargeable battery 22 with constant voltage
Number, by the dutycycle of control signal control power switch circuit, so that the output voltage of power switch circuit is adjusted to permanent
Determine voltage (predetermined comparison voltage)；
Wherein, first preset value is less than the second preset value, and the second preset value is less than the 3rd preset value；First default perseverance
Determine electric current and be less than the second pre-set constant current, the second pre-set constant current is maximum charging current in figure.
Where it is assumed that under the conditions of stationary temperature and enough input powers, gathered by above-mentioned MCU processors 101
The current voltage of rechargeable battery 22, according to the big of the current voltage and the ratio of predetermined comparison magnitude of voltage and preset value collected
Small relation simultaneously controls accordingly according to preset program in above-mentioned MCU processors 101 or algorithm (battery charging algorithm), generation
Signal, above-mentioned power switch circuit 102 is controlled using the control signal, charging electricity is given to produce the output voltage of matching
Pond 22 is charged, and rechargeable battery 22 is kept for the rational charging stage, so as to extend the service life of rechargeable battery 22.
Specifically, the charging process of above-mentioned rechargeable battery 22 is broadly divided into following several stages：
Stage 0：When collect the current voltage of rechargeable battery 22 between predetermined comparison magnitude of voltage ratio 35% to
When between 70% (representative value), that is to say, that now the dump energy of rechargeable battery 22 is less, is not easy large current charge, need to enter
Row low current charge, rechargeable battery 22 enter the charging modes that the trickle charge stage is the constant current reduced.
Stage 1：When collect the current voltage of rechargeable battery 22 between predetermined comparison magnitude of voltage ratio 70% to
When between 98% (representative value), quick charge need to be carried out, rechargeable battery 22 enters constant current charging phase, and the charging stage is normal
It is referred to as the charging modes of the i.e. full constant current of large current charge.
Stage 2：The ratio for being more than predetermined comparison magnitude of voltage when the current voltage for collecting rechargeable battery 22 is more than 98% (allusion quotation
Offset) when, rechargeable battery 22 is in quasi saturation state, and rechargeable battery 22 enters the constant-potential charge stage, and the charging stage is normal
It is referred to as floating charge (for lithium ion battery) and absorbs charging (for lead-acid battery).
Stage 3：Stage 3 is optional, is configured using CHARGECFG1 pins, CHARGECFG1 pin configuration into
Between 5% to the 90% of AVDD values.
It should be noted that wherein, above-mentioned first preset value can be 35%, the second preset value can be 70%, second
Preset value can be 98%, and above-mentioned predetermined comparison magnitude of voltage is the voltage limits of state 2 in figure, and above-mentioned controller for solar can be with
Perform a kind of constant-current constant-voltage (CCCV) charge mode for most of battery types, including sealed lead-acid (SLA)
Battery, flooded batteries, lithium ion battery etc., i.e., above-mentioned controller for solar are applied to most rechargeable batteries, it is possible to achieve control
Most of rechargeable batteries are kept for the rational charging stage, so as to extend the service life of rechargeable battery.
Further, it is contemplated that the temperature of the rated value and the rechargeable battery 22 of the maximum charge electricity of rechargeable battery 22 has
Close, when the temperature change of rechargeable battery 22, actual current and voltage that battery is born will change therewith, it is therefore desirable to upper
The size for stating predetermined comparison magnitude of voltage VS2 is adjusted, and above-mentioned controller for solar also includes：NTC temperature sensors 103, should
The annexation and internal structure of NTC temperature sensors 103 and controller for solar be：
Its one end of the NTC temperature sensors 103 connects the TEMPSENSE ports and AVDD ends of the MCU processors 101
Mouth is connected, and the other end is connected with the grounding ports of the MCU processors 101, and the NTC temperature sensors are used to gather the charging
Temperature outside battery 22, to send temperature compensation signal to the MCU processors 101；
The MCU processors 101 adjust the predetermined comparison voltage according to the temperature compensation signal.
Wherein, the NTC temperature sensors 103 include：NTC thermistor and potentiometer, the NTC thermistor respectively with
The TEMPSENSE ports of the MCU processors 101 are connected with grounding ports, the potentiometer respectively with the MCU processors
101 TEMPSENSE ports are connected with AVDD ports.Specifically, using the NTC for being thermally coupled to a battery pack (negative temperature system
Number) resistance is 10k Ω, the thermistor of β=3380 measures the temperature of rechargeable battery 22, and in AVdd and
The potentiometer that a 11.5k is connected between TEMPSENSENS starts, and the potentiometer primarily serves the effect of partial pressure, if being not required to
Battery temperature function for monitoring is wanted, then can replace thermistor using a 10k resistor.
Specifically, the thermistor around rechargeable battery 22 is thermally coupled to by one to measure the temperature of rechargeable battery 22
Degree, when the temperature change, the voltage on corresponding TEMPSENSE ports also changes therewith, above-mentioned MCU processors 101
The PWM duty cycle of FBOW pins output will change accordingly, to adapt to magnitude of voltage of the rechargeable battery 22 in different temperatures,
According to preset program or algorithm in MCU processors 101, adjust automatically predetermined comparison magnitude of voltage, auto thermal compensation is realized
Purpose.
For the ease of intuitively reading the charging current of rechargeable battery 22 and charging voltage, and get information about charging electricity
The charged state in pond 22 simultaneously shows error message, and controller noted above also includes：First light emitting diode, the second light emitting diode and
Digital display tube,
The input of above-mentioned first light emitting diode is connected with the STATUS port ends of the MCU processors 101, output end
It is connected with the negative pole of the plate of rechargeable battery 22 and the negative pole of the rechargeable battery 22, for showing charged state；
The input of above-mentioned second light emitting diode is connected with the FAULT port ends of the MCU processors 101, output end
It is connected with the negative pole of the plate of rechargeable battery 22 and the negative pole of the rechargeable battery 22, for showing error message；
The digital display tube being connected with the MCU processors 101, for show the rechargeable battery 22 voltage and
Electric current.
Preferably, the charged state representation of rechargeable battery 22 can be：When the first light emitting diode goes out entirely, represent
Rechargeable battery 22 is in the charging stage 0；
When the first light emitting diode dodges one time, represent that rechargeable battery 22 is in the charging stage 1；When the first light emitting diode
When dodging 2 times, represent that rechargeable battery 22 is in the charging stage 2, when the first light emitting diode dodges 3 times, represent at rechargeable battery 22
In the charging stage 3, when the first light emitting diode dodges 4 times, the charging complete of rechargeable battery 22 is represented.The mistake letter of rechargeable battery 22
Ceasing representation can be：When the second light emitting diode dodges one time, the disconnecting of rechargeable battery 22 is represented；When the second light emitting diode
When dodging secondary, thermistor disconnecting is represented；When the second light emitting diode dodges three times, regular failure is represented；When second luminous two
When pole pipe is dodged three times, battery undervoltage is represented.
Further, in order to which the charge condition of real time inspection rechargeable battery 22 can be realized, and controlled in wireless can be realized
Controller for solar can pass through wireless communication module and mobile terminal to the break-make of rechargeable battery 22, above-mentioned MCU processors 101
Wireless connection, the MCU processors 101 send charging voltage and charging by the wireless communication module to the mobile terminal
Electric current, and the mobile terminal send to be powered or power off to the MCU processors 101 and believed by the wireless communication module
Number, to trigger the energization or power-off that the MCU processors 101 control the rechargeable battery 22.
The embodiment of the present invention is using the output voltage for comparing solar panel and the size of the output voltage of controller, control
The time sequence status of power switch circuit processed, to control the output voltage of power switch circuit, so as to improve controller for solar
Charge efficiency.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for device
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Can one of ordinary skill in the art will appreciate that realizing that all or part of step in above method embodiment is
To instruct the hardware of correlation to complete by program, described program can be stored in computer read/write memory medium,
The storage medium designated herein obtained, such as：ROM/RAM, magnetic disc, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (9)
- A kind of 1. controller for solar, it is characterised in that including：MCU processors and opened with the power that the MCU processors are connected Powered-down road,The MCU processors, for gathering the output voltage of solar panel and gathering the output of the power switch circuit Voltage, it is raw according to the magnitude relationship of the output voltage of the solar panel and the output voltage of the power switch circuit Into corresponding charging control signal；The power switch circuit, for the voltage and/or electricity according to charging control signal adjustment input to rechargeable battery Stream.
- 2. controller for solar according to claim 1, it is characterised in that the MCU processors, collected for basis The solar panel output voltage and electric current, the voltage corresponding to maximal input is determined, according to the maximum The magnitude relationship of the output voltage of voltage and the power switch circuit corresponding to input power, generates corresponding charge control Signal；If being more than, generation reduces input to the charging control signal of the charged battery voltage；If being less than, the charging control signal of generation increase input to the charged battery voltage；If being equal to, generate first reduce increase afterwards input to the charged battery voltage charging control signal or generation first increase Reduce input afterwards to the charging control signal of the charged battery voltage.
- 3. controller for solar according to claim 1, it is characterised in that the MCU processors, be additionally operable to described in collection The current voltage of rechargeable battery, contrast the big of the current voltage of the rechargeable battery and the ratio of predetermined comparison voltage and preset value Small relation, corresponding charging control signal is generated,If ratio, between the first preset value and the second preset value, generation is inputted to described with the first pre-set constant current fills The charging control signal of battery；If ratio, between the second preset value and the 3rd preset value, generation is inputted to described with the second pre-set constant current fills The charging control signal of battery；If ratio is more than the 3rd preset value, generation is inputted to the charging control signal of the rechargeable battery with constant voltage；Its In, first preset value is less than the second preset value, and the second preset value is less than the 3rd preset value；First pre-set constant current is less than Second pre-set constant current.
- 4. according to the controller for solar described in any one of claims 1 to 3, it is characterised in that the power switch circuit, bag Include：Sequential control circuit and the energy-storage travelling wave tube electrically connected with the sequential control circuit；The sequential control circuit forms corresponding time sequence status according to the charging control signal, to be passed to the energy-storage travelling wave tube Transmission of electricity energy；The output voltage of the energy-storage travelling wave tube is directly proportional to the voltage of the rechargeable battery to the input.
- 5. controller for solar according to claim 4, it is characterised in that the sequential control circuit includes：Four absolutely Edge grid-type FET, the energy-storage travelling wave tube include：The sampling resistor of one inductance and a detection inductive current,The grid of first insulating gate type field effect tube and the second insulating gate type field effect tube TG1 with the MCU processors respectively Port is connected with BG1 ports,The grid of 3rd insulating gate type field effect tube and the 4th insulating gate type field effect tube TG2 with the MCU processors respectively Port is connected with BG2 ports,The one end of the drain electrode of the source electrode of first insulating gate type field effect tube and the second insulating gate type field effect tube with the inductance It is connected, and is connected with the SW1 ports of the MCU processors,The drain electrode of the source electrode and the 4th insulating gate type field effect tube of 3rd insulating gate type field effect tube is another with the inductance End is connected, and is connected with the SW1 ports of the MCU processors,The drain electrode of first insulating gate type field effect tube is connected with the cathode output end of the solar panel, the 3rd insulated-gate type The drain electrode of FET is connected with the electrode input end of the rechargeable battery,The source electrode of second insulating gate type field effect tube and the 4th insulating gate type field effect tube detects adopting for inductive current with described One end of sample resistance is connected, and is connected with the CSP ports of the MCU processors,The other end ground connection of the sampling resistor of the detection inductive current, and be connected with the CSN ports of the MCU processors.
- 6. a kind of controller for solar according to claim 3, it is characterised in that also include：NTC temperature sensors,Its one end of the NTC temperature sensors connects the TEMPSENSE ports and AVDD ports of the MCU processors, another End is connected with the grounding ports of the MCU processors, and the NTC temperature sensors are used to gather the temperature outside the rechargeable battery Degree, to send temperature compensation signal to the MCU processors；The MCU processors adjust the predetermined comparison voltage according to the temperature compensation signal.
- 7. a kind of controller for solar according to claim 6, it is characterised in that the NTC temperature sensors include： NTC thermistor and potentiometer,The NTC thermistor is connected with the TEMPSENSE ports of the MCU processors and grounding ports respectively, the current potential Device is connected with the TEMPSENSE ports of the MCU processors and AVDD ports respectively.
- 8. controller for solar according to claim 7, it is characterised in that also include：First light emitting diode, the second hair Optical diode and digital display tube,The input of first light emitting diode is connected with the STATUS port ends of the MCU processors, output end with it is described The negative pole of rechargeable battery plate is connected with the negative pole of the rechargeable battery, for showing charged state；The input of second light emitting diode is connected with the FAULT port ends of the MCU processors, and output end is filled with described The negative pole of electric cell panel is connected with the negative pole of the rechargeable battery, for showing error message；The digital display tube being connected with the MCU processors, for showing the voltage and current of the rechargeable battery.
- 9. controller for solar according to claim 1, it is characterised in that the MCU processors pass through radio communication mold Block and mobile terminal wireless connection, the MCU processors are sent by the wireless communication module to the mobile terminal to charge Voltage and charging current, and the mobile terminal by the wireless communication module to the MCU processors send be powered or Power-off signal, to trigger the energization or power-off that the MCU processors control the rechargeable battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710727152.5A CN107565625A (en) | 2017-08-23 | 2017-08-23 | A kind of controller for solar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710727152.5A CN107565625A (en) | 2017-08-23 | 2017-08-23 | A kind of controller for solar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111641252A (en) * | 2020-05-18 | 2020-09-08 | 江苏东洲物联科技有限公司 | Power supply system of high-availability Internet of things gateway and active intelligent charging method |
| CN113054692A (en) * | 2019-12-26 | 2021-06-29 | 国基电子（上海）有限公司 | Solar charging system and charging method thereof |
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| CN104868566A (en) * | 2015-06-24 | 2015-08-26 | 张宏昱 | Solar controller and solar charging system |
| CN106877441A (en) * | 2017-03-17 | 2017-06-20 | 上海与德信息技术有限公司 | A kind of charging circuit and its charging method |
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| CN104868566A (en) * | 2015-06-24 | 2015-08-26 | 张宏昱 | Solar controller and solar charging system |
| CN204732924U (en) * | 2015-06-24 | 2015-10-28 | 张宏昱 | A kind of controller for solar and solar recharging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113054692A (en) * | 2019-12-26 | 2021-06-29 | 国基电子（上海）有限公司 | Solar charging system and charging method thereof |
| CN113054692B (en) * | 2019-12-26 | 2024-02-20 | 富联国基(上海)电子有限公司 | Solar charging system and charging method thereof |
| CN111641252A (en) * | 2020-05-18 | 2020-09-08 | 江苏东洲物联科技有限公司 | Power supply system of high-availability Internet of things gateway and active intelligent charging method |
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