Solar Controller

Abstract

The present application relates to a solar controller, which includes: a voltage stabilizing circuit and a charge and discharge management circuit. The voltage stabilizing circuit is connected to a solar panel, and the charge and discharge management circuit is connected to the voltage stabilizing circuit and an external load. The voltage stabilizing circuit stabilizes the solar voltage output by the solar panel to obtain an output voltage. The charge and discharge management circuit converts the output voltage into a power supply voltage to supply power to the external load, and can stabilize the input fluctuating voltage to a voltage matching the solar controller, thereby providing stable power supply to the external load.

Description

Technical Field

[0001] The present application relates to the field of solar cells, and in particular to a solar controller. Background Art

[0002] In the field of solar energy, as the demand for renewable energy increases, perovskite cells have attracted much attention as a new type of high-efficiency and low-cost solar cell technology. Research and development in the field of perovskite cells has been ongoing, focusing on improving the photoelectric conversion efficiency, stability and life of perovskite cells, and working hard to reduce manufacturing costs.

[0003] During the charging process of perovskite batteries, voltage control is crucial to their performance and stability. In terms of charging control, automatic boost and buck charging technology is set in the solar controller to control the charging process of perovskite batteries to improve their performance and stability.

[0004] Existing solar controllers are only suitable for solar panels of specific voltages and models. Since the voltage fluctuation range of perovskite cells is large, existing solar controllers are difficult to apply to perovskite cells. Utility Model Content

[0005] Based on this, it is necessary to provide a solar controller suitable for solar cells with large voltage fluctuations.

[0006] A solar controller, comprising:

[0007] A voltage stabilizing circuit, the voltage stabilizing circuit being connected to the solar panel and used for stabilizing the solar voltage output by the solar panel to obtain an output voltage;

[0008] A charge and discharge management circuit is connected to the voltage stabilizing circuit and an external load, and is used to convert the output voltage into a supply voltage to supply power to the external load.

[0009] In one embodiment, the voltage stabilizing circuit comprises:

[0010] A DC / DC converter is used to stabilize the solar voltage within the input voltage range to the output voltage.

[0011] In one embodiment, the voltage stabilizing circuit further includes:

[0012] An input filter unit, the input filter unit is connected to the input end of the DC / DC converter and is used for filtering the solar voltage;

[0013] An output filter unit is connected to the output end of the DC / DC converter and is used for filtering the output voltage.

[0014] In one embodiment, the charge and discharge management circuit includes:

[0015] A charge and discharge manager, wherein the charge manager is connected to the voltage stabilizing circuit and is used to regulate the output voltage to the supply voltage so as to supply power to the external load.

[0016] In one embodiment, the charge and discharge management circuit further includes:

[0017] A discharge module is connected to the charge and discharge manager and the external load, and is used to obtain the supply voltage to supply power to the external load.

[0018] In one embodiment, the discharge module comprises:

[0019] A voltage regulating unit, the voltage regulating unit is connected to the charge and discharge manager and is used to boost the supply voltage;

[0020] A load connector is connected between the voltage regulating unit and the external load, and is used to transmit the supply voltage to power the external load.

[0021] In one of the embodiments, the charge and discharge manager is further used to adjust the output voltage to a charging voltage to charge the energy storage battery.

[0022] In one embodiment, the charge and discharge management circuit further includes:

[0023] A charging connector, the charging connector is connected to the charge and discharge manager and is used to output the charging voltage to the energy storage battery for charging.

[0024] In one embodiment, the charge and discharge management circuit further includes:

[0025] A backup charging unit is connected to the charge and discharge manager and an external power supply, and is used to obtain a power supply voltage input by the external power supply to charge the energy storage battery.

[0026] In one embodiment, the charge and discharge management circuit includes:

[0027] A charging management chip, the charging management chip comprising a voltage input pin and a voltage output pin, the voltage input pin is connected to the voltage stabilizing circuit, and the voltage output pin is connected to the discharge module;

[0028] A transient diode, wherein the cathode of the transient diode is connected to the voltage output pin of the charging management chip, and the anode of the transient diode is grounded.

[0029] The above-mentioned solar controller stabilizes the voltage input by the perovskite battery in the solar panel, and can adjust the voltage input by the perovskite battery to a preset voltage, so that when the voltage of the perovskite battery is too high or too low, the solar controller can still charge and discharge normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A structural block diagram of a solar controller according to an embodiment;

[0032] Figure 2 A structural block diagram of a solar controller according to an embodiment;

[0033] Figure 3 A structural block diagram of a solar controller according to an embodiment;

[0034] Figure 4 A structural block diagram of a solar controller according to an embodiment;

[0035] Figure 5 A structural block diagram of a solar controller according to an embodiment;

[0036] Figure 6 A structural block diagram of a solar controller according to an embodiment;

[0037] Figure 7 A structural block diagram of a solar controller according to an embodiment;

[0038] Figure 8 A structural block diagram of a solar controller according to an embodiment;

[0039] Fig. 9 The figure is a circuit diagram of a solar controller according to an embodiment.

[0040] Description of reference numerals:

[0041] Solar panel 101, voltage stabilizing circuit 102, charge and discharge management circuit 103, external load 104;

[0042] DC / DC converter 201;

[0043] Input filter unit 301, output filter unit 302;

[0044] Charge and discharge manager 401;

[0045] Discharging module 501;

[0046] Voltage regulating unit 601, load connector 602;

[0047] Charging connector 701, energy storage battery 702;

[0048] Backup charging unit 801. DETAILED DESCRIPTION

[0049] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0051] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0052] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0053] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0054] Existing solar controllers are only suitable for solar panels of specific voltages and models. Most solar cells are silicon cells, and the voltage of silicon cells is relatively constant, while the voltage fluctuation range of perovskite cells is larger, usually around 5V. Therefore, existing solar controllers are difficult to apply to perovskite cells.

[0055] like Figure 1 As shown, a solar controller of an embodiment includes a voltage stabilizing circuit 102 and a charge and discharge management circuit 103. The voltage stabilizing circuit 102 is connected to the solar panel 101, and is used to stabilize the solar voltage output by the solar panel 101 to obtain an output voltage. The charge and discharge management circuit 103 is connected to the voltage stabilizing circuit 102 and an external load 104, and is used to convert the output voltage into a power supply voltage to supply power to the external load 104.

[0056] It should be noted that the solar panel 101 converts sunlight into electrical energy and stores it in the perovskite cell. The perovskite cell in the solar panel 101 outputs the solar voltage to the voltage stabilizing circuit 102 through the stored electrical energy. The voltage stabilizing circuit 102 stabilizes the output solar voltage to obtain the output voltage. After receiving the output voltage, the charge and discharge management circuit 103 converts the output voltage into a power supply voltage, and supplies power to the external load 104 through the power supply voltage. When the voltage output by the perovskite cell fluctuates, the fluctuating voltage is stabilized to match the output voltage of the solar controller, so that the solar controller maintains power supply to the external load, and the input fluctuating voltage can be stabilized to match the voltage of the solar controller, thereby providing stable power supply to the external load. In addition, the normal operation of the solar controller can be met in an indoor environment, that is, when the conditions of the photovoltaic panel are relatively harsh and the voltage fluctuation is large.

[0057] like Figure 2 As shown, a voltage stabilizing circuit 102 of an embodiment includes a DC / DC converter 201, and the DC / DC converter 201 is connected to the solar panel 101 and the charge and discharge management circuit 103, and is used to stabilize the solar voltage within the input voltage range to an output voltage.

[0058] It should be noted that the DC / DC converter 201 stabilizes the solar voltage within the input voltage range to stabilize the solar voltage to a preset output voltage range to obtain an output voltage, and can stabilize a wide range of solar voltage to a voltage matching the solar control. The input voltage range includes 2V to 16V, the output voltage range includes 5V to 9V, and the output voltage is generally 5V.

[0059] If the solar voltage is within the input voltage range of 2V to 16V and the solar voltage is lower than the preset voltage threshold of 5V, the DC / DC converter 201 boosts the solar voltage. If the solar voltage is within the input voltage range of 2V to 16V and the solar voltage is higher than the preset voltage threshold of 5V, the DC / DC converter 201 bucks the solar voltage.

[0060] The DC / DC converter 201 includes a voltage stabilizing chip and an external circuit of the voltage stabilizing chip. The voltage stabilizing chip supports an input voltage range of 2V to 16V, supports an input current of 3A, supports an output voltage range of 5V to 9V, supports an output current of 1A, and has a conversion efficiency of up to 93%. When more than two perovskite battery sub-cells are operating normally, the solar controller can continue to operate stably. The voltage stabilizing chip includes any of the following: TPS63070 chip or SC8903 chip.

[0061] like Figure 3 As shown, the voltage stabilizing circuit 102 of one embodiment further includes: an input filter unit 301 and an output filter unit 302, wherein the input filter unit 301 is connected to the input end of the DC / DC converter 201 and is used to filter the solar voltage. The output filter unit 302 is connected to the output end of the DC / DC converter 201 and is used to filter the output voltage.

[0062] It should be noted that the input filter unit 301 filters the input solar voltage to remove the interference voltage in the solar voltage, thereby improving the accuracy of voltage stabilization. The output filter unit 302 filters the output voltage to remove the interference voltage in the output voltage, thereby improving the accuracy of power supply.

[0063] like Figure 4 As shown, the charge and discharge management circuit 103 of an embodiment includes: a charge and discharge manager 401, the charge manager 401 is connected to the voltage stabilizing circuit 102, and is used to regulate the output voltage to a supply voltage to supply power to an external load.

[0064] It should be noted that the charging manager 401 regulates the output voltage to the supply voltage, and outputs the supply voltage to the external load to supply power to the external load, and can regulate the stabilized output voltage to the required supply voltage to supply power to the external load.

[0065] like Figure 5 As shown, the charge and discharge management circuit 103 of an embodiment further includes: a discharge module 501 , which is connected to the charge and discharge manager 401 and the external load 104 and is used to obtain a supply voltage to supply power to the external load 104 .

[0066] It should be noted that the discharge module 501 obtains the supply voltage transmitted by the charge and discharge manager 401, and supplies power to the external load 104 through the supply voltage, and can output the supply voltage to the external load to supply power to the external load.

[0067] like Figure 6 As shown, the discharge module 501 of an embodiment includes: a voltage regulating unit 601 and a load connector 602. The voltage regulating unit 601 is connected to the charge and discharge manager 401 and is used to boost the supply voltage. The load connector 602 is connected to the voltage regulating unit 601 and the external load 104 and is used to transmit the supply voltage to power the external load 104.

[0068] It should be noted that the voltage regulating unit 601 transmits the supply voltage to the charge and discharge manager 401 to boost the supply voltage to the voltage required by the external load 104, and the load connector 602 transmits the boosted supply voltage to the external load 104 to power the external load 104, which can be suitable for external loads that require different supply voltages.

[0069] The charge and discharge manager 401 of one embodiment is further configured to adjust the output voltage to a charging voltage to charge the energy storage battery.

[0070] It should be noted that the charge and discharge manager 401 regulates the output voltage to a charging voltage, and outputs the charging voltage to the energy storage battery to charge the energy storage battery. It can regulate the stabilized output voltage to a required charging voltage to charge the energy storage battery 702, thereby achieving the purpose of energy storage, and powering an external load in the absence of sunlight.

[0071] like Figure 7 As shown, the charge and discharge management circuit 103 of one embodiment further includes: a charging connector 701 , which is connected to the charge and discharge manager 401 and is used to output the charging voltage to the energy storage battery 702 for charging.

[0072] It should be noted that the charging connector 701 receives the charging voltage output by the charge and discharge manager 401, and transmits the charging voltage to the energy storage battery 702 to charge the energy storage battery 702, so as to store excess solar energy and use it to charge the load when needed.

[0073] like Figure 8 As shown, the charge and discharge management circuit 103 of an embodiment further includes: a backup charging unit 801, which is connected to the charge and discharge manager 401 and the external power supply, and is used to obtain the power supply voltage input by the external power supply to charge the energy storage battery.

[0074] It should be noted that, the backup charging unit 801 is connected to an external power supply, and the power supply voltage input by the external power supply is obtained, and the power supply voltage is transmitted to the charge and discharge manager 401. The charge and discharge manager 401 adjusts the power supply voltage to a charging voltage to charge the energy storage battery 702. When there is insufficient solar energy for a long time and the energy storage battery cannot supply power, the energy storage battery can be charged and the external load can be powered by the energy storage battery.

[0075] like Fig. 9 As shown, the charge and discharge management circuit 103 includes: a charge management chip and a transient diode, the charge management chip includes a voltage input pin and a voltage output pin, the voltage input pin is connected to the voltage stabilizing circuit 102, and the voltage output pin is connected to the discharge module 501. The cathode of the transient diode is connected to the voltage output pin of the charge management chip, and the anode of the transient diode is grounded.

[0076] It should be noted that the transient diode is used for reverse current cutoff protection. The charging management chip can include the TP5400 charging and discharging IC chip. The TP5400 charging and discharging IC chip has built-in overcurrent protection, overvoltage protection, overtemperature protection, battery overcharge and overdischarge protection and other protection measures, which can effectively avoid component damage and failure and improve system stability and reliability.

[0077] The voltage stabilizing circuit 102 includes: a voltage stabilizing chip and an external circuit of the voltage stabilizing chip. The voltage stabilizing chip is exemplified by the TPS63070 chip. The VIN pin of the voltage stabilizing chip is connected to the solar panel 101. The specific circuit structure can be referred to Fig. 9 The voltage regulator chip and its external circuit are used to stabilize the solar voltage within the preset input voltage range to obtain the output voltage.

[0078] The input filter unit 301 includes: a C14 capacitor, a C11 capacitor, a C25 capacitor, a C29 capacitor and a Schottky diode. One end of the C14 capacitor is connected to the VIN pin, and the other end is grounded. One end of the C11 capacitor is connected to the VIN pin, and the other end is grounded. One end of the C25 capacitor is connected to the VIN pin, and the other end is grounded. The positive electrode of the C29 capacitor is connected to the VIN pin, and the negative electrode of the C29 capacitor is grounded. The negative electrode of the D1 Schottky diode is connected to the VIN pin. For the specific circuit structure, please refer to Fig. 9 As shown, the solar voltage is filtered by capacitors C14, C11, C25, C29 and Schottky diodes, and the model of the Schottky diode may be BAT54WS.

[0079] The output filter unit 302 includes: C9 capacitor, C7 capacitor, C26 capacitor, C28 capacitor and D6 diode. One end of C9 capacitor is connected to the VOUT pin of the voltage regulator chip, and the other end is grounded. One end of C7 capacitor is connected to the VOUT pin of the voltage regulator chip, and the other end is grounded. The positive electrode of C26 capacitor is connected to the VOUT pin of the voltage regulator chip, and the negative electrode of C26 capacitor is grounded. The positive electrode of C28 capacitor is connected to the VOUT pin of the voltage regulator chip, and the negative electrode of C26 capacitor is grounded. The negative electrode of D6 diode is connected to the VOUT pin of the voltage regulator chip, and the positive electrode of D6 diode is connected to the charge and discharge management circuit 103. The specific circuit structure can be referred to. Fig. 9 As shown, the output voltage is filtered by capacitors C9, C7, C26, C28 and diode D6.

[0080] The charge and discharge manager 401 includes a charge and discharge management chip and an external circuit of the charge and discharge management chip. The VCC pin of the charge and discharge management chip is connected to the voltage stabilizing circuit 102. The specific circuit structure can be referred to Fig. 9 The output voltage is regulated to a supply voltage through the charge and discharge management chip and its external circuit, and the supply voltage is output to an external load to supply power to the external load.

[0081] The discharge module 501 includes a voltage regulating unit 601 and a load connector 602. The voltage regulating unit 601 includes a boost chip and an external circuit of the boost chip. The SW pin of the boost chip is connected to the charge and discharge manager 401. The VOUT pin and the EN pin of the boost chip are connected to the load connector 602. The specific circuit structure can be referred to Fig. 9 The boost chip is combined with its external circuit to boost the supply voltage, and the boosted supply voltage is transmitted to the load connector 602 .

[0082] The load connector 602 includes a USB connector and an H5 relay. The VCC pin of the USB connector is connected to the EN pin and the VOUT pin of the boost chip. One end of the H5 relay is connected to the VCC pin. The specific circuit structure can be referred to Fig. 9 The load connector 602 is used to connect the external load 104, and the boosted supply voltage is transmitted to the external load 104 through the load connector 602 for power supply, and the H5 relay is used to control the load connector 602 to be opened or closed.

[0083] The charging connector 701 includes a CN2 plug-in, one end of which is connected to the BAT pin of the charge and discharge management chip, and the other end is connected to the VCC pin of the charge and discharge management chip. The specific circuit structure can be referred to Fig. 9The CN2 plug-in is used to connect the energy storage battery 702, transmit the charging voltage output by the charge and discharge management chip to the energy storage battery 702, and charge the energy storage battery 702.

[0084] The standby charging unit 801 includes a TYPE-C charging chip and an external circuit of the TYPE-C charging chip. The VBUS pin of the TYPE-C charging chip is connected to the VCC pin of the charge and discharge management chip. The specific circuit structure can be referred to Fig. 9 The TYPE-C charging chip is used to connect to an external power source, and transmits the power voltage input by the external power source to the charge and discharge manager 401 through the TYPE-C charging chip and its external circuit, so that the charge and discharge manager 401 adjusts the power voltage to a charging voltage to charge the energy storage battery 702.

[0085] The transient diode includes a D5 transient diode. The cathode of the D5 transient diode is connected to the VOUT pin of the charge and discharge management chip, and the anode of the D5 transient diode is grounded. The specific circuit structure can be referred to Fig. 9 shown.

[0086] In addition, by integrating the voltage stabilizing chip, charge and discharge management chip, boost chip, TYPE-C charging chip and the peripheral circuits of each chip, the circuit cost can be greatly reduced.

[0087] It is understandable that the above-mentioned solar controller can also adopt other forms, not limited to the forms mentioned in the above embodiments, as long as it can achieve the function of stabilizing the unstable voltage input by the perovskite cell in the solar panel to the required stable voltage.

[0088] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A solar controller, characterized in that: include: A voltage stabilizing circuit, the voltage stabilizing circuit being connected to the solar panel and used for stabilizing the solar voltage output by the solar panel to obtain an output voltage; A charge and discharge management circuit is connected to the voltage stabilizing circuit and an external load, and is used to convert the output voltage into a supply voltage to supply power to the external load.

2. The solar controller according to claim 1, characterized in that: The voltage stabilizing circuit comprises: A DC / DC converter is used to stabilize the solar voltage within the input voltage range to the output voltage.

3. The solar controller according to claim 2, characterized in that: The voltage stabilizing circuit further includes: An input filter unit, the input filter unit is connected to the input end of the DC / DC converter and is used for filtering the solar voltage; An output filter unit is connected to the output end of the DC / DC converter and is used for filtering the output voltage.

4. The solar controller according to claim 2, characterized in that: The charge and discharge management circuit comprises: A charge and discharge manager is connected to the voltage stabilizing circuit and is used to regulate the output voltage to the supply voltage so as to supply power to the external load.

5. The solar controller according to claim 4, characterized in that: The charge and discharge management circuit also includes: A discharge module is connected to the charge and discharge manager and the external load, and is used to obtain the supply voltage to supply power to the external load.

6. The solar controller according to claim 5, characterized in that: The discharge module comprises: A voltage regulating unit, the voltage regulating unit is connected to the charge and discharge manager and is used to boost the supply voltage; A load connector is connected between the voltage regulating unit and the external load, and is used to transmit the supply voltage to power the external load.

7. The solar controller according to claim 4, characterized in that: The charge and discharge manager is further used to adjust the output voltage to a charging voltage so as to charge the energy storage battery.

8. The solar controller according to claim 7, characterized in that: The charge and discharge management circuit also includes: A charging connector, the charging connector is connected to the charge and discharge manager and is used to output the charging voltage to the energy storage battery for charging.

9. The solar controller according to claim 8, characterized in that: The charge and discharge management circuit also includes: A backup charging unit is connected to the charge and discharge manager and an external power supply, and is used to obtain a power supply voltage input by the external power supply to charge the energy storage battery.

10. The solar controller according to claim 5, characterized in that: The charge and discharge management circuit comprises: A charging management chip, the charging management chip comprising a voltage input pin and a voltage output pin, the voltage input pin is connected to the voltage stabilizing circuit, and the voltage output pin is connected to the discharge module; A transient diode, wherein the cathode of the transient diode is connected to the voltage output pin of the charging management chip, and the anode of the transient diode is grounded.

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