CN109450070B - Solar charging switching power supply - Google Patents
Solar charging switching power supply Download PDFInfo
- Publication number
- CN109450070B CN109450070B CN201811552630.4A CN201811552630A CN109450070B CN 109450070 B CN109450070 B CN 109450070B CN 201811552630 A CN201811552630 A CN 201811552630A CN 109450070 B CN109450070 B CN 109450070B
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- circuit
- rechargeable battery
- port
- power supply
- charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging 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—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/865—Battery or charger load switching, e.g. concurrent charging and load supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a solar charging switching power supply, comprising: the solar energy charging system comprises a solar panel, a solar energy charging circuit, a charging switching circuit, a first rechargeable battery, a second rechargeable battery, a collecting circuit, a control circuit and a power supply switching circuit; the solar panel is electrically connected with the input end of the solar charging circuit; the output end of the solar charging circuit is electrically connected with the input end of the charging switching circuit; the output end of the charging switching circuit is electrically connected with the first rechargeable battery and the second rechargeable battery respectively; the first rechargeable battery and the second rechargeable battery are respectively and electrically connected with the input end of the acquisition circuit and the input end of the power supply switching circuit; the input end of the control circuit is electrically connected with the output end of the acquisition circuit; the output end of the control circuit is electrically connected with the input end of the charging switching circuit and the input end of the power supply switching circuit respectively; the output end of the power supply switching circuit is used for supplying power to the electric equipment. The power supply is charged by using two batteries in turn, which is beneficial to prolonging the service life.
Description
Technical Field
The invention relates to the technical field of solar power sources, in particular to a solar charging switching power source.
Background
The existing solar power supply uses a battery which is discharged and charged simultaneously in the use process. The loss of the storage battery is large, the solar power supply is accelerated to age, and the service life of the solar power supply is influenced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a solar charging switching power supply for solving the defects in the prior art.
Specifically, an embodiment of the present invention provides a solar charging switching power supply, including: the solar energy charging system comprises a solar panel, a solar energy charging circuit, a charging switching circuit, a first rechargeable battery, a second rechargeable battery, a collecting circuit, a control circuit and a power supply switching circuit;
The solar panel is electrically connected with the input end of the solar charging circuit; the output end of the solar charging circuit is electrically connected with the input end of the charging switching circuit; the output end of the charging switching circuit is electrically connected with the first rechargeable battery and the second rechargeable battery respectively; the first rechargeable battery and the second rechargeable battery are respectively and electrically connected with the input end of the acquisition circuit and the input end of the power supply switching circuit; the input end of the control circuit is electrically connected with the output end of the acquisition circuit; the output end of the control circuit is respectively and electrically connected with the input end of the charging switching circuit and the input end of the power supply switching circuit; the output end of the power supply switching circuit is used for supplying power to electric equipment;
The solar panel is used for collecting solar energy; the solar charging circuit is used for stabilizing the output voltage of the solar panel; the first rechargeable battery and the second rechargeable battery are used for storing electric energy collected by the solar panel; the acquisition circuit is used for acquiring the residual capacitance of the first rechargeable battery and the second rechargeable battery; the control circuit is used for controlling the charging switching circuit to charge the first rechargeable battery or the second rechargeable battery respectively according to the acquisition result of the acquisition circuit until the preset maximum electric quantity is reached; the control circuit is also used for controlling the power supply switching circuit according to the acquisition result of the acquisition circuit so as to realize that the first rechargeable battery or the second rechargeable battery is discharged until the preset minimum electric quantity is reached; when the first rechargeable battery is in a chargeable state, the second rechargeable battery is in a dischargeable state; when the second rechargeable battery is in a chargeable state, the second rechargeable battery is in a dischargeable state;
And the output end of the power supply switching circuit is used for supplying power to electric equipment.
As a further improvement of the above technical solution, further comprising: a step-up/step-down circuit; the step-up and step-down circuit is electrically connected with the output end of the power supply switching circuit; the step-up/step-down circuit is used for increasing or decreasing the output voltage value so as to meet the voltage requirement of the electric equipment.
As a further improvement of the above technical solution, further comprising: an external charging circuit; the output end of the external charging circuit is electrically connected with the first rechargeable battery and the second rechargeable battery respectively; the output of the external charging circuit may be used to connect to an external power source.
As a further improvement of the above technical solution, the external charging circuit is a USB interface charging circuit.
As a further improvement of the above technical solution, the first rechargeable battery and the second rechargeable battery are identical in specification and model.
As a further improvement of the technical scheme, the power supply switching circuit is a level control type single-pole double-throw switch; the single pole double throw switch has a level input port, a first port, a second port and a third port; when the input level of the level input port is high level, the first port is connected and conducted with the second port; when the input level of the level input port is low level, the first port is connected and conducted with the third port.
As a further improvement of the technical scheme, the charging switching circuit is a level control type single-pole double-throw switch; the single pole double throw switch has a level input port, a first port, a second port and a third port; when the input level of the level input port is high level, the first port is connected and conducted with the second port; when the input level of the level input port is low level, the first port is connected and conducted with the third port.
As a further improvement of the above technical solution, the acquisition circuit includes: a first resistor and a second resistor; the first resistor and the second resistor are connected in series and then connected to two ends of the first rechargeable battery or the second rechargeable battery, and a common end of the first resistor and the second resistor is connected with a voltage acquisition end of the control circuit.
As a further improvement of the above technical solution, the control circuit includes: a processor; the processor is integrated with an analog-to-digital conversion unit and a comparator circuit; the analog-to-digital conversion unit is electrically connected with the acquisition circuit; and the comparison output end of the comparator circuit is electrically connected with the power supply switching circuit and the charging switching circuit.
As a further improvement of the technical scheme, the first rechargeable battery and the second rechargeable battery are high-capacity lithium ion batteries.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects: the solar charging switching power supply uses two batteries to charge in turn until the batteries are full, unlike the existing solar power supply which uses one battery, the battery is charged while discharging in the use process. The loss of the storage battery is large, the solar power supply is accelerated to age, and the service life of the solar power supply is influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a solar charging switching power supply according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a solar charging circuit according to an embodiment of the present invention;
FIG. 3 is a block diagram of a level control type single pole double throw switch according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a charge switching acquisition control power supply switching circuit according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a solar charging switching power supply according to another embodiment of the present invention.
Description of main reference numerals:
10-a solar panel; 20-a solar charging circuit; 30-a charge switching circuit; 41-a first charging battery; 42-a second rechargeable battery; 50-acquisition circuitry; 60-a control circuit; 70-a power supply switching circuit; 80-step-up and step-down circuits; 90-external charging circuit.
Detailed Description
Hereinafter, various embodiments of the present disclosure will be more fully described. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the scope of the disclosure to the specific embodiments disclosed herein, but rather the disclosure is to be interpreted to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.
Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present disclosure indicate the presence of the disclosed functions, operations or elements, and are not limiting of the increase in one or more functions, operations or elements. Furthermore, as used in various embodiments of the present disclosure, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the present disclosure, the expression "at least one of a or/and B" includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B or may include both a and B.
Expressions (such as "first", "second", etc.) used in the various embodiments of the present disclosure may modify various constituent elements in the various embodiments, but the respective constituent elements may not be limited. For example, the above description does not limit the order and/or importance of the elements. The above description is only intended to distinguish one element from another element. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present disclosure.
It should be noted that: if it is described to "connect" one component element to another component element, a first component element may be directly connected to a second component element, and a third component element may be "connected" between the first and second component elements. Conversely, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The term "user" as used in various embodiments of the present disclosure may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).
The terminology used in the various embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of this disclosure belong. The terms (such as those defined in commonly used dictionary) will be construed to have the same meaning as the context meaning in the related art and will not be construed to have an idealized or overly formal meaning unless expressly so defined in the various embodiments of the disclosure.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a solar charging switching power supply, including: the solar panel 10, the solar charging circuit 20, the charging switching circuit 30, the first rechargeable battery 41, the second rechargeable battery 42, the acquisition circuit 50, the control circuit 60, and the power supply switching circuit 70.
The solar panel 10 is electrically connected to an input terminal of the solar charging circuit 20. The output end of the solar charging circuit 20 is electrically connected with the input end of the charging switching circuit 30; the output end of the charging switching circuit 30 is electrically connected with the first rechargeable battery 41 and the second rechargeable battery 42 respectively; the first rechargeable battery 41 and the second rechargeable battery 42 are respectively and electrically connected with the input end of the acquisition circuit 50 and the input end of the power supply switching circuit 70; the input end of the control circuit 60 is electrically connected with the output end of the acquisition circuit 50; the output end of the control circuit 60 is electrically connected with the input end of the charging switching circuit 30 and the input end of the power supply switching circuit 70 respectively; the output of the power switching circuit 70 is used to power the powered device.
The solar panel 10 is used for collecting solar energy; the solar charging circuit 20 is used for stabilizing the output voltage of the solar panel 10; the first and second rechargeable batteries 41 and 42 are each used to store electric energy collected by the solar panel 10; the acquisition circuit 50 is used for acquiring the residual capacities of the first rechargeable battery 41 and the second rechargeable battery 42; the control circuit 60 is configured to control the charge switching circuit 30 to charge the first rechargeable battery 41 or the second rechargeable battery 42 respectively according to the collection result of the collection circuit 50 until a preset maximum electric quantity is reached; the control circuit 30 is further configured to control the power supply switching circuit 70 according to the acquired result of the acquired circuit to realize that the first rechargeable battery 41 or the second rechargeable battery 42 discharges until reaching the preset minimum electric quantity; when the first rechargeable battery 41 is in a chargeable state, the second rechargeable battery 42 is in a dischargeable state; when the second rechargeable battery 42 is in a chargeable state, the first rechargeable battery 41 is in a dischargeable state. And the same time is ensured, one rechargeable battery is used for charging and storing energy, and the other rechargeable battery is used for discharging for users.
The inventors of the present application found that the solar panels all use 1 rechargeable battery. The charging battery is charged and discharged during use, resulting in shortened service life of the charging battery. By arranging two rechargeable batteries to alternately work in turn, the same time is ensured, one of the rechargeable batteries is used for charging and storing energy, and the other rechargeable battery is used for discharging for users. The battery charging and discharging device can solve the electricity utilization requirement of a user, stores electricity and electricity, and is beneficial to prolonging the service life of the battery in the process of charging and discharging the battery.
The output of power switching circuit 70 is used to power the powered device.
The first rechargeable battery 41 and the second rechargeable battery 42 are preferably lithium ion batteries of the same specification and model.
The solar charging circuit 20 may have a circuit structure as shown in fig. 2; the solar charging circuit 20 includes: diode D1, capacitor C1, light emitting diode D2, resistor R13 and R14, and voltage stabilizing chip IC1. Ports p+ and P-are used to connect solar panel 10. The port ch_vbat is used to connect to the input of the charge switching circuit 30. The diode D1 is used for reverse connection protection.
The charge switching circuit 30 may be a level control type single pole double throw switch; the single pole double throw switch has a level input port, a first port, a second port and a third port; when the input level of the level input port is high, the first port is connected and conducted with the second port; when the input level of the level input port is low level, the first port is connected and conducted with the third port. Similarly, the power supply switching circuit 70 may be a level control type single pole double throw switch; the single pole double throw switch has a level input port, a first port, a second port and a third port; when the input level of the level input port is high, the first port is connected and conducted with the second port; when the input level of the level input port is low level, the first port is connected and conducted with the third port. As shown in fig. 3, the level control type single pole double throw switch specifically includes: 3 metal strips, 1 iron ball conductor and 1 high-level driven electromagnet. Under normal state, the iron ball conductor is placed on the first metal strip and the third metal strip under the action of gravity, the first port P1 and the third port P3 are conducted, when the input level of the level input port is high, the electromagnet generates magnetic force, the iron ball conductor is sucked up, the iron ball conductor is placed on the first metal strip and the second metal strip, and the first port P1 and the second port P2 are conducted.
The acquisition circuit 50, the charge switching circuit 30, the power supply switching circuit 70, and the control circuit are connected together as shown in fig. 4.
The acquisition circuit 50 includes: 4 resistors (R1, R2, R7, R8); every 2 resistors are connected in series and then connected to two ends of the first rechargeable battery or the second rechargeable battery, and a common terminal BAT1_ADC of the resistors R1 and R2 and a common terminal BAT2_ADC of the resistors R7 and R8 are connected to a voltage acquisition end of the control circuit 60. The percentage of the residual capacitance is determined by collecting the voltage value of the rechargeable battery in real time. The voltage acquisition terminal of the control circuit 60 is the input port of the analog-to-digital conversion unit.
The charge switching circuit 30 includes a MOS transistor VT1, a resistor R3, a resistor R5, a MOS transistor VT3, a resistor R9, and a resistor R11. When the charge enable port ch_bat1_en is a high level signal, the MOS transistor VT1 is turned on, and the charging device may charge the first rechargeable battery BAT1 through the ch_vbat port. When the charge enabling port ch_bat1_en is a low signal, the MOS transistor VT1 is turned off, and the charging device cannot charge the first rechargeable battery BAT 1. Similarly, when the charge enable port ch_bat2_en is a high level signal, the MOS transistor VT3 is turned on, and the charging device may charge the second rechargeable battery BAT2 through the ch_vbat port. When the charge enabling port ch_bat2_en is a low signal, the MOS transistor VT3 is turned off, and the charging device cannot charge the second rechargeable battery BAT 2.
Similarly, the power supply switching circuit 50 includes a MOS transistor VT2, a resistor R4, a resistor R6, a MOS transistor VT4, a resistor R10, and a resistor R12. When the discharge enabling port BAT1_en is a high level signal, the MOS transistor VT2 is turned on, and the first rechargeable battery BAT1 can discharge the electric device. When the discharge enabling port BAT1_en is a low-level signal, the MOS transistor VT2 is turned off, and the first rechargeable battery BAT1 cannot discharge the power utilization device. Similarly, when the discharge enable port BAT2_en is a high level signal, the MOS transistor VT4 is turned on, and the second rechargeable battery BAT2 can discharge the power device. When the discharge enabling port BAT2_en is a low-level signal, the MOS transistor VT4 is turned off, and the second charging battery BAT2 cannot discharge the power utilization device.
The control circuit 60 includes: a processor and processor-related peripheral circuitry; the processor is integrated with an analog-to-digital conversion unit and a comparator circuit; the analog-to-digital conversion unit is electrically connected with the acquisition circuit; the comparison output end of the comparator circuit is electrically connected with the power supply switching circuit and the charging switching circuit.
The processor can be a common 51 single-chip microcomputer or ARM processor and other processors with analog-to-digital conversion units and comparator circuits.
The controller is integrated with an analog-to-digital conversion unit and a comparator circuit; an input port provided by the analog-to-digital conversion unit is connected with a voltage acquisition port BAT1_ADC and a BAT2_ADC; the analog-to-digital conversion unit determines whether the battery is in a charging state or a discharging state according to the partial pressure value of the battery acquired in real time. And the comparator circuit outputs high-low level signals through the charging enabling port and the discharging enabling port after comparing the real-time acquired partial pressure value with a preset value so as to realize the charging and discharging requirements of the first rechargeable battery and the second rechargeable battery.
Example 2
As shown in fig. 5, a step-up/step-down circuit 80 is added to the embodiment 1; the step-up and step-down circuit 80 is electrically connected with the output end of the power supply switching circuit 70; step-up and step-down circuit 70 is used to increase or decrease the output voltage value to meet the voltage requirements of the consumer.
In this embodiment, the solar charging switching power supply may further include: an external charging circuit 90; the output end of the external charging circuit 90 is electrically connected with the first rechargeable battery 41 and the second rechargeable battery 42 respectively; an output of the external charging circuit 41 is available for connection to an external power source. The external charging circuit is preferably a USB interface charging circuit. The solar charging switching power supply can be charged through a mobile power supply or a USB charging plug.
Those skilled in the art will appreciate that the drawing is merely a schematic illustration of a preferred implementation scenario and that the modules or flows in the drawing are not necessarily required to practice the invention.
Those skilled in the art will appreciate that modules in an apparatus in an implementation scenario may be distributed in an apparatus in an implementation scenario according to an implementation scenario description, or that corresponding changes may be located in one or more apparatuses different from the implementation scenario. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above-mentioned inventive sequence numbers are merely for description and do not represent advantages or disadvantages of the implementation scenario. The foregoing disclosure is merely illustrative of some embodiments of the invention, but the invention is not limited thereto, and any variations that may be contemplated by those skilled in the art should fall within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552630.4A CN109450070B (en) | 2018-12-18 | 2018-12-18 | Solar charging switching power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811552630.4A CN109450070B (en) | 2018-12-18 | 2018-12-18 | Solar charging switching power supply |
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| CN109450070A CN109450070A (en) | 2019-03-08 |
| CN109450070B true CN109450070B (en) | 2024-09-20 |
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| CN201811552630.4A Active CN109450070B (en) | 2018-12-18 | 2018-12-18 | Solar charging switching power supply |
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Families Citing this family (1)
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| CN113835251A (en) * | 2021-09-26 | 2021-12-24 | 京东方科技集团股份有限公司 | Display module, display device, preparation method and control method of display device |
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