CN117411159A - Intelligent solar charging control circuit - Google Patents
Intelligent solar charging control circuit Download PDFInfo
- Publication number
- CN117411159A CN117411159A CN202311585220.0A CN202311585220A CN117411159A CN 117411159 A CN117411159 A CN 117411159A CN 202311585220 A CN202311585220 A CN 202311585220A CN 117411159 A CN117411159 A CN 117411159A
- Authority
- CN
- China
- Prior art keywords
- voltage
- resistor
- module
- storage battery
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 18
- 230000009123 feedback regulation Effects 0.000 claims description 14
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a solar charging intelligent control circuit, which relates to the field of solar power supply, and comprises: the solar power supply module is used for converting solar energy into electric energy and outputting voltage; the feedback voltage stabilizing control module is used for converting the output voltage of the solar power supply module into stable voltage and charging the storage battery module through the switch control module; compared with the prior art, the invention has the beneficial effects that: according to the invention, by arranging the automatic power-off module, whether the voltage of the storage battery rises in a set time is detected, when the rising voltage is sufficient, the switch control module is controlled to be conducted to charge the storage battery, when the voltage of the storage battery does not rise in the set time, the switch control module is controlled to be disconnected to stop charging the storage battery module, and when the voltage on the traditional storage battery reaches the set voltage, a charging loop is disconnected, and the storage battery is still suitable for charging the storage battery after the rated voltage of the storage battery drops.
Description
Technical Field
The invention relates to the field of solar power supply, in particular to a solar charging intelligent control circuit.
Background
When the solar panel is used for charging the storage battery, the working voltage of the solar panel is generally higher than the voltage of the storage battery, and the long-term high-voltage charging of the storage battery can cause certain damage to the storage battery, so that the voltage output by the solar panel to the storage battery needs to be controlled.
In the existing circuit for charging the storage battery by the solar panel, when the storage battery reaches a set charging voltage, the charging is automatically disconnected, and the disadvantage is that the rated voltage of the storage battery is reduced due to multiple charging and discharging of the storage battery, and the charging voltage set in the initial stage is not suitable for the storage battery after multiple charging and discharging, and needs improvement.
Disclosure of Invention
The invention aims to provide a solar charging intelligent control circuit for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an intelligent control circuit for solar charging, comprising:
the solar power supply module is used for converting solar energy into electric energy and outputting voltage;
the feedback voltage stabilizing control module is used for converting the output voltage of the solar power supply module into stable voltage and charging the storage battery module through the switch control module;
the switch control module is used for controlling whether a loop between the feedback voltage stabilizing control module and the storage battery module is conducted or not;
the storage battery module is used for storing electric energy by the storage battery;
the automatic power-off module is used for detecting whether the voltage change in the set time of the storage battery reaches a threshold value, and when the voltage change reaches the threshold value, the control switch control module is controlled to be turned on, and when the voltage change does not reach the threshold value, the control switch control module is controlled to be turned off;
the output end of the solar power supply module is connected with the input end of the feedback voltage stabilizing control module, the output end of the feedback voltage stabilizing control module is connected with the first input end of the switch control module, the output end of the switch control module is connected with the storage battery module, the storage battery module is connected with the input end of the automatic power-off module, and the output end of the automatic power-off module is connected with the second input end of the switch control module.
As still further aspects of the invention: the feedback voltage stabilizing control module comprises:
the voltage output unit is used for outputting the voltage of the solar power supply module to the switch control module;
the feedback regulation unit is used for setting a reference voltage and regulating the output voltage of the voltage output unit in a feedback way according to the reference voltage;
the first input end of the voltage output unit is connected with the output end of the solar power supply module, the second input end of the voltage output unit is connected with the output end of the feedback regulation unit, and the output end of the voltage output unit is connected with the input end of the feedback regulation unit and the input end of the switch control module.
As still further aspects of the invention: the voltage output unit comprises a first MOS tube, a second MOS tube and a second resistor, wherein the D electrode of the first MOS tube is connected with one end of the second resistor and the output end of the solar power supply module, the G electrode of the first MOS tube is connected with the other end of the second resistor and the D electrode of the second MOS tube, the S electrode of the second MOS tube is grounded, the S electrode of the first MOS tube is connected with the input end of the feedback regulation unit and the input end of the switch control module, and the G electrode of the second MOS tube is connected with the output end of the feedback regulation unit.
As still further aspects of the invention: the feedback regulation unit comprises a third resistor, a fourth resistor, a first amplifier, a second inverter, a fourth inverter, a fifth resistor and a second capacitor, wherein one end of the third resistor is connected with the output end of the voltage output unit, the other end of the third resistor is connected with one end of the fourth resistor and the same phase end of the first amplifier, the other end of the fourth resistor is grounded, the inverting end of the first amplifier is connected with a reference voltage, the output end of the first amplifier is connected with the power end of the second inverter, the input end of the second inverter is connected with one end of the fifth resistor and one end of the second capacitor, the other end of the second capacitor is grounded, the output end of the second inverter is connected with the other end of the fifth resistor and the input end of the fourth inverter, and the output end of the fourth inverter is connected with the second input end of the voltage output unit.
As still further aspects of the invention: the switch control module comprises a sixth resistor, a third MOS tube, a fourth MOS tube, a third capacitor and a first diode, wherein the D electrode of the third MOS tube is connected with one end of the sixth resistor and the output end of the feedback voltage stabilizing control module, the G electrode of the third MOS tube is connected with the other end of the sixth resistor and the D electrode of the fourth MOS tube, the S electrode of the fourth MOS tube is grounded, the G electrode of the fourth MOS tube is connected with the output end of the automatic power-off module, the S electrode of the third MOS tube is connected with one end of the third capacitor and the positive electrode of the first diode, the other end of the third capacitor is grounded, and the negative electrode of the first diode is connected with the storage battery module.
As still further aspects of the invention: the automatic power-off module comprises:
the signal amplifying unit is used for amplifying the voltage of the storage battery and outputting the amplified voltage to the charging detection unit;
the charging detection unit is used for detecting whether the storage battery is continuously charged or not through the amplified voltage change, and when the voltage change reaches a threshold value within a set time, the storage battery is continuously charged; when the threshold value is not reached, the storage battery is not continuously charged, and the control switch control module is controlled to be disconnected;
the input end of the signal amplification unit is connected with the storage battery module, the output end of the signal amplification unit is connected with the input end of the charging detection unit, and the output end of the charging detection unit is connected with the second input end of the switch control module.
As still further aspects of the invention: the signal amplifying unit comprises a seventh resistor, an eighth resistor, a fifth triode and a sixth triode, wherein one end of the seventh resistor is connected with a power supply voltage, one end of the eighth resistor, the other end of the seventh resistor is connected with a collector of the fifth triode, the other end of the eighth resistor is connected with a collector of the sixth triode, a base electrode of the fifth triode is connected with the storage battery module, an emitter electrode of the fifth triode is connected with a base electrode of the sixth triode, and an emitter electrode of the sixth triode is connected with an input end of the charging detection unit.
As still further aspects of the invention: the charging detection unit comprises a second diode, a first inductor, a third diode, a fourth capacitor, an optocoupler and a ninth resistor, wherein the positive electrode of the second diode is connected with one end of the first inductor and the output end of the signal amplification unit, the negative electrode of the second diode is connected with the first end of the optocoupler, the other end of the first inductor is connected with one end of the fourth capacitor and the positive electrode of the third diode, the other end of the fourth capacitor is grounded, the negative electrode of the third diode is connected with the second end of the optocoupler, the fourth end of the optocoupler is grounded, the third end of the optocoupler is connected with one end of the ninth resistor and the power supply voltage, and the other end of the ninth resistor is connected with the second input end of the switch control module.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, by arranging the automatic power-off module, whether the voltage of the storage battery rises in a set time is detected, when the rising voltage is sufficient, the switch control module is controlled to be conducted to charge the storage battery, when the voltage of the storage battery does not rise in the set time, the switch control module is controlled to be disconnected to stop charging the storage battery module, namely whether the storage battery continues to be charged or not is controlled according to whether the voltage of the storage battery rises, and a charging loop is disconnected when the voltage of the traditional storage battery reaches the set voltage, so that the storage battery is still suitable for charging after the rated voltage of the storage battery drops.
Drawings
Fig. 1 is a schematic diagram of a solar charging intelligent control circuit.
Fig. 2 is a circuit diagram of a solar power supply module and a feedback voltage stabilizing control module.
Fig. 3 is a circuit diagram of the switch control module and the battery module.
Fig. 4 is a circuit diagram of the auto-power-off module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, a solar charging intelligent control circuit includes:
the solar power supply module 1 is used for converting solar energy into electric energy and outputting voltage;
the feedback voltage stabilizing control module 2 is used for converting the output voltage of the solar power supply module 1 into stable voltage and charging the storage battery module 4 through the switch control module 3;
the switch control module 3 is used for controlling whether a loop between the feedback voltage stabilizing control module 2 and the storage battery module 4 is conducted or not;
a battery module 4 for storing electric energy by the battery E1;
the automatic power-off module 5 is used for detecting whether the voltage change in the set time of the storage battery E1 reaches a threshold value, and controlling the switch control module 3 to be turned on when the voltage change reaches the threshold value and controlling the switch control module 3 to be turned off when the voltage change does not reach the threshold value;
the output end of the solar power supply module 1 is connected with the input end of the feedback voltage stabilizing control module 2, the output end of the feedback voltage stabilizing control module 2 is connected with the first input end of the switch control module 3, the output end of the switch control module 3 is connected with the storage battery module 4, the storage battery module 4 is connected with the input end of the automatic power-off module 5, and the output end of the automatic power-off module 5 is connected with the second input end of the switch control module 3.
In particular embodiments: referring to fig. 2 and 3, the solar power supply module 1 includes a solar panel X, a first resistor R1, and a first capacitor C1, and converts solar energy into electric energy through the solar panel X for output; the battery module 4 includes a battery E1, and the battery E1 stores electric energy.
In this embodiment: referring to fig. 2, the feedback voltage stabilizing control module 2 includes:
a voltage output unit for outputting the voltage of the solar power supply module 1 to the switch control module 3;
the feedback regulation unit is used for setting a reference voltage VREF, and according to the reference voltage VREF, the output voltage of the voltage output unit is regulated in a feedback mode;
the first input end of the voltage output unit is connected with the output end of the solar power supply module 1, the second input end of the voltage output unit is connected with the output end of the feedback regulation unit, and the output end of the voltage output unit is connected with the input end of the feedback regulation unit and the input end of the switch control module 3.
In this embodiment: referring to fig. 2, the voltage output unit includes a first MOS transistor V1, a second MOS transistor V2, and a second resistor R2, wherein a D pole of the first MOS transistor V1 is connected to one end of the second resistor R2 and an output end of the solar power supply module 1, a G pole of the first MOS transistor V1 is connected to the other end of the second resistor R2 and a D pole of the second MOS transistor V2, an S pole of the second MOS transistor V2 is grounded, an S pole of the first MOS transistor V1 is connected to an input end of the feedback adjustment unit and an input end of the switch control module 3, and a G pole of the second MOS transistor V2 is connected to an output end of the feedback adjustment unit.
In the initial state, the second MOS tube V2 is cut off, and based on the fact that the second resistor R2 outputs a high level to the G pole of the first MOS tube V1, the first MOS tube V1 is conducted, and the output voltage of the solar power supply module 1 is output to a later-stage circuit through the first MOS tube V1.
In another embodiment: a light emitting tube may be additionally provided to indicate whether to output voltage.
In this embodiment: referring to fig. 2, the feedback adjustment unit includes a third resistor R3, a fourth resistor R4, a first amplifier U1, a second inverter U2, a fourth inverter U4, a fifth resistor R5, and a second capacitor C2, wherein one end of the third resistor R3 is connected to an output end of the voltage output unit, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and an in-phase end of the first amplifier U1, the other end of the fourth resistor R4 is grounded, an inverting end of the first amplifier U1 is connected to a reference voltage VREF, an output end of the first amplifier U1 is connected to a power end of the second inverter U2, an input end of the second inverter U2 is connected to one end of the fifth resistor R5 and one end of the second capacitor C2, the other end of the second capacitor C2 is grounded, and an output end of the second inverter U2 is connected to the other end of the fifth resistor R5 and an input end of the fourth inverter U4.
The voltage on the third resistor R3 and the fourth resistor R4 is the output voltage at the first MOS tube V1, the fourth resistor R4 is used as a sampling resistor, the upper voltage is the sampling voltage, the larger the output voltage at the first MOS tube V1 is, the larger the sampling voltage is, when the sampling voltage is higher than the reference voltage VREF, the first amplifier U1 outputs a high level (the sampling voltage is the magnitude) to supply power for the second inverter U2, the input end of the second inverter U2 is low level initially, the output end of the second inverter U2 outputs a high level, the second capacitor C2 is charged through the fifth resistor R5, the input end of the second inverter U2 is high level when the second capacitor C2 is charged to the high level, the second inverter U2 outputs a low level, the second capacitor C2 discharges through the fifth resistor R5, and the like in a reciprocating manner, the square wave signal PWM1 is formed, based on the fact that the larger the sampling voltage is, the faster the second capacitor C2 is charged through the fifth resistor R5 when the second inverter U2 outputs the high level, and the speed of the second capacitor C2 is unchanged when the second capacitor C2 discharges, that is, the larger the sampling voltage is, the smaller the duty ratio of the square wave signal PWM1 is generated, the larger the duty ratio of the square wave signal PWM2 formed through the fourth inverter U4 is, the larger the duty ratio of the signal PWM2 is, the longer the unit conduction time of the second MOS tube V2 is, the unit conduction time of the first MOS tube V1 is reduced, so that the output voltage is reduced until the voltage matches the reference voltage VREF (that is, the sampling voltage on the fourth resistor R4 is equal to the reference voltage VREF), and the voltage stabilizing output is constructed.
In another embodiment: the fourth resistor R4 may be replaced by a potentiometer, so that the duty ratio of the sampling voltage in the output voltage of the first MOS transistor V1 is adjusted by adjusting the resistance of the potentiometer.
In this embodiment: referring to fig. 3, the switch control module 3 includes a sixth resistor R6, a third MOS tube V3, a fourth MOS tube V4, a third capacitor C3, and a first diode D1, wherein the D pole of the third MOS tube V3 is connected to one end of the sixth resistor R6 and the output end of the feedback voltage stabilizing control module 2, the G pole of the third MOS tube V3 is connected to the other end of the sixth resistor R6 and the D pole of the fourth MOS tube V4, the S pole of the fourth MOS tube V4 is grounded, the G pole of the fourth MOS tube V4 is connected to the output end of the automatic power-off module 5, the S pole of the third MOS tube V3 is connected to one end of the third capacitor C3 and the positive pole of the first diode D1, the other end of the third capacitor C3 is grounded, and the negative pole of the first diode D1 is connected to the battery module 4.
The output voltage of the first MOS tube V1 is output to the storage battery module 4 through the third MOS tube V3, the storage battery E1 stores electric energy, the third MOS tube V3 is conducted under the initial condition, and the fourth MOS tube V4 is cut off; when the auto-power-off module 5 outputs a high level to supply the G pole of the fourth MOS transistor V4 (common point B), the fourth MOS transistor V4 is turned on, the G pole voltage of the third MOS transistor V3 is pulled down, and the charging circuit of the battery E1 is disconnected.
In another embodiment: the third capacitor C3 may be omitted, where the third capacitor C3 is configured to avoid directly supplying a larger voltage to the battery E1 when the third MOS transistor V3 is turned on when the battery E1 is charged.
In this embodiment: referring to fig. 4, the auto-power-off module 5 includes:
the signal amplifying unit is used for amplifying the voltage of the storage battery E1 and outputting the amplified voltage to the charging detection unit;
the charging detection unit is used for detecting whether the storage battery E1 is continuously charged through the amplified voltage change, and when the voltage change reaches a threshold value within a set time, the storage battery E1 is continuously charged; when the threshold value is not reached, the storage battery E1 is not continuously charged, and the switch control module 3 is controlled to be disconnected;
the input end of the signal amplification unit is connected with the storage battery module 4, the output end of the signal amplification unit is connected with the input end of the charging detection unit, and the output end of the charging detection unit is connected with the second input end of the switch control module 3.
In this embodiment: referring to fig. 4, the signal amplifying unit includes a seventh resistor R7, an eighth resistor R8, a fifth triode V5, and a sixth triode V6, wherein one end of the seventh resistor R7 is connected to the power supply voltage VDD, one end of the eighth resistor R8, the other end of the seventh resistor R7 is connected to the collector of the fifth triode V5, the other end of the eighth resistor R8 is connected to the collector of the sixth triode V6, the base of the fifth triode V5 is connected to the battery module 4, the emitter of the fifth triode V5 is connected to the base of the sixth triode V6, and the emitter of the sixth triode V6 is connected to the input end of the charge detecting unit.
The voltage of the battery E1 (at the common point a) is amplified by the fifth transistor V5 and the sixth transistor V6 and then outputted to the charge detection unit.
In another embodiment: the power supply voltage VDD can be externally connected with voltage, or can be connected with voltage from the solar power supply module 1 and the feedback voltage stabilizing control module 2.
In this embodiment: referring to fig. 4, the charging detection unit includes a second diode D2, a first inductor L1, a third diode D3, a fourth capacitor C4, an optocoupler U3, and a ninth resistor R9, wherein an anode of the second diode D2 is connected to one end of the first inductor L1 and an output end of the signal amplifying unit, a cathode of the second diode D2 is connected to a first end of the optocoupler U3, another end of the first inductor L1 is connected to one end of the fourth capacitor C4, an anode of the third diode D3 is connected to an anode of the third diode D3, another end of the fourth capacitor C4 is grounded, a cathode of the third diode D3 is connected to a second end of the optocoupler U3, a fourth end of the optocoupler U3 is grounded, a third end of the optocoupler U3 is connected to one end of the ninth resistor R9, and a power supply voltage VDD, and another end of the ninth resistor R9 is connected to a second input end of the switch control module 3.
Based on the characteristics that the inductance current is not suddenly changed and the capacitance voltage is not suddenly changed, the first inductance L1 and the fourth capacitance C4 form a delay circuit, for example, 50V voltage is output through a sixth triode V6 at first time, the voltage is directly output to the first end of the optocoupler U3 through a second diode D2, 30S is then output to the second end of the optocoupler U3 after the first inductance L1, the fourth capacitance C4 and the third diode D3 are obtained, the storage battery E1 is increased through charging voltage at the moment, the voltage at the first end of the optocoupler U3 is 52V after the voltage is amplified through a fifth triode V5 and a sixth triode V6, and based on the voltage difference between the first end and the second end of the optocoupler U3, the light emitting diode inside the optocoupler U3 emits light, the phototransistor inside the optocoupler U3 is triggered to be conducted, the third end of the optocoupler U3 is grounded through the phototriode and the fourth end of the optocoupler U3, the common point B is in a low level, and the fourth MOS transistor V4 is not triggered to be conducted; when the voltage of the battery E1 is no longer increased along with the charging (here, the fifth triode V5 and the sixth triode V6 are specifically selected to amplify the voltage signal, so as to avoid that the voltage of the battery E1 is slowly increased and insufficient to trigger the optical coupler U3 to be turned on), no voltage difference exists between the first end and the second end of the optical coupler U3, the phototransistor in the optical coupler U3 is not turned on, the common point B is at a high level, and the fourth MOS tube V4 is triggered to be turned on, so as to disconnect the charging loop of the battery E1. When the charging mode is used, after the rated voltage of the storage battery E1 is reduced, the charging loop is automatically disconnected when the charging stop of the storage battery E1 is detected, so that the overcharge of the storage battery E1 is avoided. The delay time is changed by selecting the first inductor and the fourth capacitor with different types.
In another embodiment: based on the fact that the voltage is insufficient when the storage battery E1 starts to be accessed, the power supply voltage VDD can be supplied in a delayed mode, and the automatic power-off module 5 does not work within a period of time when the storage battery E1 starts to be charged, so that electric energy is saved.
The working principle of the invention is as follows: the solar power supply module 1 is used for converting solar energy into electric energy and outputting voltage; the feedback voltage stabilizing control module 2 is used for converting the output voltage of the solar power supply module 1 into a stable voltage and charging the storage battery module 4 through the switch control module 3; the switch control module 3 is used for controlling whether a loop between the feedback voltage stabilizing control module 2 and the storage battery module 4 is conducted or not; the storage battery module 4 is used for storing electric energy by the storage battery E1; the automatic power-off module 5 is used for detecting whether the voltage change of the storage battery E1 in the set time reaches a threshold value, and when the voltage change reaches the threshold value, the control switch control module 3 is turned on, and when the voltage change does not reach the threshold value, the control switch control module 3 is turned off.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a solar charging intelligent control circuit which characterized in that, this solar charging intelligent control circuit includes:
the solar power supply module is used for converting solar energy into electric energy and outputting voltage;
the feedback voltage stabilizing control module is used for converting the output voltage of the solar power supply module into stable voltage and charging the storage battery module through the switch control module;
the switch control module is used for controlling whether a loop between the feedback voltage stabilizing control module and the storage battery module is conducted or not;
the storage battery module is used for storing electric energy by the storage battery;
the automatic power-off module is used for detecting whether the voltage change in the set time of the storage battery reaches a threshold value, and when the voltage change reaches the threshold value, the control switch control module is controlled to be turned on, and when the voltage change does not reach the threshold value, the control switch control module is controlled to be turned off;
the output end of the solar power supply module is connected with the input end of the feedback voltage stabilizing control module, the output end of the feedback voltage stabilizing control module is connected with the first input end of the switch control module, the output end of the switch control module is connected with the storage battery module, the storage battery module is connected with the input end of the automatic power-off module, and the output end of the automatic power-off module is connected with the second input end of the switch control module.
2. The solar charging intelligent control circuit of claim 1, wherein the feedback voltage regulation control module comprises:
the voltage output unit is used for outputting the voltage of the solar power supply module to the switch control module;
the feedback regulation unit is used for setting a reference voltage and regulating the output voltage of the voltage output unit in a feedback way according to the reference voltage;
the first input end of the voltage output unit is connected with the output end of the solar power supply module, the second input end of the voltage output unit is connected with the output end of the feedback regulation unit, and the output end of the voltage output unit is connected with the input end of the feedback regulation unit and the input end of the switch control module.
3. The solar charging intelligent control circuit according to claim 2, wherein the voltage output unit comprises a first MOS tube, a second MOS tube and a second resistor, wherein a D electrode of the first MOS tube is connected with one end of the second resistor and an output end of the solar power supply module, a G electrode of the first MOS tube is connected with the other end of the second resistor and a D electrode of the second MOS tube, an S electrode of the second MOS tube is grounded, an S electrode of the first MOS tube is connected with an input end of the feedback regulation unit and an input end of the switch control module, and a G electrode of the second MOS tube is connected with an output end of the feedback regulation unit.
4. The intelligent control circuit for solar charging according to claim 2, wherein the feedback adjustment unit comprises a third resistor, a fourth resistor, a first amplifier, a second inverter, a fourth inverter, a fifth resistor and a second capacitor, one end of the third resistor is connected with the output end of the voltage output unit, the other end of the third resistor is connected with one end of the fourth resistor and the same phase end of the first amplifier, the other end of the fourth resistor is grounded, the opposite phase end of the first amplifier is connected with a reference voltage, the output end of the first amplifier is connected with the power end of the second inverter, the input end of the second inverter is connected with one end of the fifth resistor and one end of the second capacitor, the other end of the second capacitor is grounded, the output end of the second inverter is connected with the other end of the fifth resistor and the input end of the fourth inverter, and the output end of the fourth inverter is connected with the second input end of the voltage output unit.
5. The intelligent solar charging control circuit according to claim 1, wherein the switch control module comprises a sixth resistor, a third MOS tube, a fourth MOS tube, a third capacitor and a first diode, wherein the D electrode of the third MOS tube is connected with one end of the sixth resistor and the output end of the feedback voltage stabilizing control module, the G electrode of the third MOS tube is connected with the other end of the sixth resistor and the D electrode of the fourth MOS tube, the S electrode of the fourth MOS tube is grounded, the G electrode of the fourth MOS tube is connected with the output end of the automatic power-off module, the S electrode of the third MOS tube is connected with one end of the third capacitor and the positive electrode of the first diode, the other end of the third capacitor is grounded, and the negative electrode of the first diode is connected with the storage battery module.
6. The solar charging intelligent control circuit of claim 1 or 5, wherein the auto-power-off module comprises:
the signal amplifying unit is used for amplifying the voltage of the storage battery and outputting the amplified voltage to the charging detection unit;
the charging detection unit is used for detecting whether the storage battery is continuously charged or not through the amplified voltage change, and when the voltage change reaches a threshold value within a set time, the storage battery is continuously charged; when the threshold value is not reached, the storage battery is not continuously charged, and the control switch control module is controlled to be disconnected;
the input end of the signal amplification unit is connected with the storage battery module, the output end of the signal amplification unit is connected with the input end of the charging detection unit, and the output end of the charging detection unit is connected with the second input end of the switch control module.
7. The intelligent solar charging control circuit according to claim 6, wherein the signal amplifying unit comprises a seventh resistor, an eighth resistor, a fifth triode and a sixth triode, one end of the seventh resistor is connected with the power supply voltage, one end of the eighth resistor, the other end of the seventh resistor is connected with the collector of the fifth triode, the other end of the eighth resistor is connected with the collector of the sixth triode, the base of the fifth triode is connected with the storage battery module, the emitter of the fifth triode is connected with the base of the sixth triode, and the emitter of the sixth triode is connected with the input end of the charging detection unit.
8. The intelligent solar charging control circuit according to claim 6, wherein the charging detection unit comprises a second diode, a first inductor, a third diode, a fourth capacitor, an optocoupler and a ninth resistor, wherein the positive electrode of the second diode is connected with one end of the first inductor and the output end of the signal amplifying unit, the negative electrode of the second diode is connected with the first end of the optocoupler, the other end of the first inductor is connected with one end of the fourth capacitor and the positive electrode of the third diode, the other end of the fourth capacitor is grounded, the negative electrode of the third diode is connected with the second end of the optocoupler, the fourth end of the optocoupler is grounded, the third end of the optocoupler is connected with one end of the ninth resistor and the power supply voltage, and the other end of the ninth resistor is connected with the second input end of the switch control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311585220.0A CN117411159B (en) | 2023-11-27 | 2023-11-27 | Intelligent solar charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311585220.0A CN117411159B (en) | 2023-11-27 | 2023-11-27 | Intelligent solar charging control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117411159A true CN117411159A (en) | 2024-01-16 |
| CN117411159B CN117411159B (en) | 2024-02-13 |
Family
ID=89489077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311585220.0A Active CN117411159B (en) | 2023-11-27 | 2023-11-27 | Intelligent solar charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411159B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242107A (en) * | 2008-03-18 | 2008-08-13 | 北京交通大学 | Self-adaptive solar charging controller |
| US20110050190A1 (en) * | 2009-09-02 | 2011-03-03 | Tigo Energy, Inc. | Systems and Methods for Enhanced Efficiency Auxiliary Power Supply Module |
| KR101208725B1 (en) * | 2012-09-06 | 2012-12-06 | 주식회사 유진에너텍 | Solar generating system |
| CN203611892U (en) * | 2013-11-11 | 2014-05-28 | 北汽福田汽车股份有限公司 | Outage delay control system of vehicle control unit |
| JP2015107039A (en) * | 2013-12-02 | 2015-06-08 | 日立マクセル株式会社 | Battery pack having charge and discharge switch circuit |
| CN108322045A (en) * | 2018-02-08 | 2018-07-24 | 中国航天空气动力技术研究院 | A kind of wide scope based on BUCK circuits is adjustable from power on/off potential source |
| CN114915010A (en) * | 2022-03-28 | 2022-08-16 | 中科新松有限公司 | Delayed power-off method, delayed power-off circuit and application system thereof |
| CN115315039A (en) * | 2022-08-08 | 2022-11-08 | 杭州科技职业技术学院 | Solar-powered municipal street lamp and control method thereof |
| CN217824389U (en) * | 2022-08-04 | 2022-11-15 | 何晓海 | Electric bicycle prevents overcharging auto-power-off device based on STC singlechip that charges |
| CN217956764U (en) * | 2022-08-18 | 2022-12-02 | 河北驷乾新能源科技股份有限公司 | High conversion rate photovoltaic module |
-
2023
- 2023-11-27 CN CN202311585220.0A patent/CN117411159B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242107A (en) * | 2008-03-18 | 2008-08-13 | 北京交通大学 | Self-adaptive solar charging controller |
| US20110050190A1 (en) * | 2009-09-02 | 2011-03-03 | Tigo Energy, Inc. | Systems and Methods for Enhanced Efficiency Auxiliary Power Supply Module |
| KR101208725B1 (en) * | 2012-09-06 | 2012-12-06 | 주식회사 유진에너텍 | Solar generating system |
| CN203611892U (en) * | 2013-11-11 | 2014-05-28 | 北汽福田汽车股份有限公司 | Outage delay control system of vehicle control unit |
| JP2015107039A (en) * | 2013-12-02 | 2015-06-08 | 日立マクセル株式会社 | Battery pack having charge and discharge switch circuit |
| CN108322045A (en) * | 2018-02-08 | 2018-07-24 | 中国航天空气动力技术研究院 | A kind of wide scope based on BUCK circuits is adjustable from power on/off potential source |
| CN114915010A (en) * | 2022-03-28 | 2022-08-16 | 中科新松有限公司 | Delayed power-off method, delayed power-off circuit and application system thereof |
| CN217824389U (en) * | 2022-08-04 | 2022-11-15 | 何晓海 | Electric bicycle prevents overcharging auto-power-off device based on STC singlechip that charges |
| CN115315039A (en) * | 2022-08-08 | 2022-11-08 | 杭州科技职业技术学院 | Solar-powered municipal street lamp and control method thereof |
| CN217956764U (en) * | 2022-08-18 | 2022-12-02 | 河北驷乾新能源科技股份有限公司 | High conversion rate photovoltaic module |
Non-Patent Citations (1)
| Title |
|---|
| 李冶;陈赫;汪东洋;乔淑君;黄鹏辉;: "智能锂电池充电器设计", 吉林大学学报(信息科学版), vol. 30, no. 03, 15 May 2012 (2012-05-15), pages 256 - 260 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117411159B (en) | 2024-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201682417U (en) | Power supply protection circuit based on super capacitor | |
| CN117293991B (en) | Solar charging control circuit with protection function | |
| CN117411159B (en) | Intelligent solar charging control circuit | |
| WO2023246506A1 (en) | Starting control circuit and switching power source system | |
| CN101937016A (en) | Low voltage promoting device | |
| CN108899987A (en) | A kind of solar charging electric control circuit with MPPT function | |
| EP2330714A2 (en) | A charging circuit | |
| CN217956764U (en) | High conversion rate photovoltaic module | |
| CN114123431B (en) | Battery charging control circuit | |
| CN113489126B (en) | High-efficient milliwatt level photovoltaic energy collection control circuit | |
| CN201403045Y (en) | MOS tube driver circuit | |
| CN116599192B (en) | Photovoltaic off-grid, commercial network and energy storage hybrid power supply system | |
| CN117060552B (en) | Charging pile charging stage switching circuit | |
| CN219498993U (en) | Charging circuit and device of battery | |
| CN215576338U (en) | Analog controller | |
| CN216086235U (en) | Photovoltaic discharge voltage stabilizing system | |
| CN213960039U (en) | Enable time delay shutdown circuit | |
| CN218513149U (en) | Backlight driving circuit and display device | |
| CN212969439U (en) | Low-power-consumption circuit for quickly powering off chip in standby mode | |
| CN220022629U (en) | DC-DC boosting power supply | |
| CN210806837U (en) | Automatic charging power supply circuit | |
| CN213661447U (en) | Feedback circuit, switching power supply and electronic device | |
| CN214281230U (en) | Direct current type power supply or system protection circuit and electronic equipment | |
| CN221614689U (en) | Solar cell charging circuit | |
| CN116505533B (en) | New energy power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |