Self-starting circuit system and self-starting solar street lamp

Abstract

The invention provides a self-starting circuit system and a self-starting solar street lamp, and belongs to the technical field of battery management, and the circuit is characterized in that the input end of a self-starting unit is connected with the output end of a solar cell panel through a diode, and the output end of the self-starting unit is connected with the enabling input end of a power supply chip; the output end of the power supply chip is connected with the self-starting unit, and the output end of the solar cell panel is connected with the battery; when the diode is switched on, the solar cell panel provides output voltage for the self-starting unit, when the output voltage is higher than a preset threshold value, the self-starting unit generates an enable signal, and the power supply chip outputs working voltage and self-locking voltage in response to the enable signal, so that the battery is charged; and when the output voltage is lower than a preset threshold value, the self-starting unit responds to the self-locking voltage to generate an enable signal, so that the battery is discharged. According to the output voltage of the solar cell panel, an enable signal is output, the self-starting circuit system is controlled to carry out charging and discharging work, and the self-starting function is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of solar cells, and in particular to a solar street lamp self-starting circuit and a self-starting method. Background Art

[0002] Solar LED street lights are street lights that use solar energy to charge and illuminate. They are mainly composed of solar panels, controllers, LED light sources, batteries, brackets and other components. Its working principle is to collect solar energy through solar panels and convert it into DC power, which is stored in the battery pack. When night falls or the light is dim to a certain extent, the controller will automatically turn on the LED light source and use the stored power for lighting. In recent years, solar LED street lights have been welcomed by many parties for their energy saving and environmental protection. The area of ​​application is getting larger and larger, and higher and higher requirements are put forward for installation and production work.

[0003] At present, the circuit of solar LED street lights includes four major parts: solar panels, controllers, batteries and LED street lights. When the products leave the factory, these four parts are independent. After the on-site installation is completed, the solar panels start to work. However, on-site installation is difficult and there are various external risks. Therefore, integrating the controller and the battery is a way to solve this problem. However, the integrated battery and controller, the battery provides the operating voltage for the controller, which causes it to consume a certain amount of power, resulting in energy waste, and may also cause the battery to be over-discharged and damaged.

[0004] Therefore, there is an urgent need for a self-starting circuit system and a self-starting solar street lamp, which can realize the self-starting of the circuit system through self-starting control. Summary of the invention

[0005] In view of this, it is necessary to provide a self-starting circuit and a self-starting method for a solar street lamp, which can output an enable signal according to the output voltage of the solar panel through the self-starting circuit system, and control the self-starting circuit system to perform charging and discharging according to the enable signal, thereby realizing the self-starting function and ensuring that there is no power consumption or extremely low power consumption when the solar panel has no output voltage.

[0006] In order to achieve the above-mentioned object, on the one hand, the present invention provides a solar street light self-starting circuit, comprising: the self-starting circuit comprises a self-starting unit, a power chip and a battery; The input end of the self-starting unit is connected to the output end of the solar panel through a diode, the output end of the self-starting unit is connected to the enable input end of the power chip, the output end of the power chip is connected to the self-starting unit, and the output end of the solar panel is connected to the battery; When the diode is turned on, the solar panel provides an output voltage to the self-starting unit. When the output voltage is higher than a preset threshold, the self-starting unit generates an enable signal. The power chip responds to the enable signal to output a working voltage and a self-locking voltage so that the solar panel charges the battery. When the output voltage is lower than the preset threshold, the self-starting unit responds to the self-locking voltage to generate an enable signal so that the battery discharges.

[0007] In some possible implementations, the self-starting circuit further includes a control component and a DCDC conversion component, one end of the control component is connected to the power chip, and the other end is connected to the DCDC conversion component; The DCDC conversion components are connected to the solar panel and the battery respectively.

[0008] In some possible implementations, the power chip further includes an enable pin, a ground pin, a feedback pin, and an output pin; The enable pin is connected to the output end of the self-starting unit, the ground pin is grounded, and the feedback pin is connected to the output pin; The output pins of the power chip are connected to the battery and the self-starting unit respectively.

[0009] In some possible implementations, the self-starting unit includes a first resistor and a first voltage stabilizing diode; The first resistor is connected in series with the first voltage stabilizing diode to form a voltage stabilizing circuit. One end of the voltage stabilizing circuit is connected to the diode and the control component, and the other end is connected to the ground pin of the power chip.

[0010] In some possible implementations, the self-starting unit further includes a first capacitor; Two ends of the first capacitor are respectively connected to an enable pin and a ground pin of the power chip.

[0011] In some possible implementations, the power chip further includes a second resistor and a third resistor, and the second resistor and the third resistor constitute a voltage feedback sampling circuit; Two ends of the second resistor are respectively connected to a feedback pin and a ground pin of the power chip; Two ends of the third resistor are respectively connected to the negative output terminal and the feedback pin of the power chip.

[0012] In some possible implementations, the power chip further includes a second capacitor, a third capacitor and a first inductor; One end of the second capacitor is connected to the negative electrode of the output terminal of the power chip, and the other end is connected to the ground pin of the power chip; One end of the third capacitor is connected to the positive output terminal of the power chip through the first inductor, and the other end is connected to the ground pin of the power chip.

[0013] In some possible implementations, the DCDC conversion component is externally connected to an electrical component.

[0014] In some possible implementations, the unidirectional conduction direction of the diode is the conduction from the solar cell panel to the self-starting unit; When the diode is not conducting, there is no voltage signal at the input end of the self-starting unit, the self-starting unit has no enabling signal output, and the self-starting circuit system does not work; When the diode is turned on, the solar panel provides an output voltage to the self-starting unit. When the output voltage is greater than a preset threshold, the self-starting unit outputs an enable signal. The power chip responds to the enable signal to provide a working voltage to the control component. The control component controls the DCDC conversion component to work, thereby controlling the solar panel to charge the battery. The power chip provides a self-locking voltage to the self-starting unit through the voltage stabilizing circuit. When the output voltage is less than a preset threshold, the self-starting unit generates an enable signal according to the self-locking voltage, the power chip responds to the enable signal to provide an operating voltage to the control circuit, and the control component controls the operation of the DCDC conversion component, thereby controlling the battery discharge.

[0015] In a second aspect, the present invention further provides a self-starting solar street light, comprising the self-starting circuit system described above, and further comprising: an LED street light, wherein the self-starting circuit is externally connected to the LED street light.

[0016] The beneficial effects of the present invention are: The present invention integrates a self-starting unit, a power chip and a battery into a circuit system, wherein the input end of the self-starting unit is connected to the output end of the solar panel through a diode, the output end of the self-starting unit is connected to the enable input end of the power chip, the output end of the power chip is connected to the self-starting unit, and the output end of the solar panel is connected to the battery; wherein when the diode is turned on, the solar panel provides an output voltage to the self-starting unit, when the output voltage is higher than a preset threshold, the self-starting unit generates an enable signal, and the power chip responds to the enable signal to output a working voltage and a self-locking voltage, so that the solar panel charges the battery; when the output voltage is lower than the preset threshold, the self-starting unit generates an enable signal according to the self-locking voltage, and the power chip responds to the enable signal to output a working voltage and a self-locking voltage, so that the battery discharges. The present invention achieves unidirectional conduction between a solar cell panel and a self-starting unit. When the solar cell panel provides an output voltage, the self-starting unit outputs an enable signal according to the magnitude of the output voltage. The power chip responds to the enable signal and outputs an operating voltage to control the charging or discharging of the battery. The self-starting circuit outputs an enable signal according to the output voltage of the solar cell panel, and controls the self-starting circuit system to perform charging and discharging operations according to the enable signal, thereby realizing the self-starting function of the circuit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A circuit diagram of an embodiment of a self-starting circuit system provided by the present invention; Figure 2 A specific circuit diagram of an embodiment of the self-starting circuit system provided by the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] It should be understood that the schematic drawings are not drawn to scale. The flowchart used in the present invention shows the operations implemented according to some embodiments of the present invention. It should be understood that the operations of the flowchart can be implemented out of order, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present invention, can add one or more other operations to the flowchart, and can also remove one or more operations from the flowchart. Some of the block diagrams shown in the accompanying drawings are functional entities, which do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor systems and / or microcontroller systems.

[0021] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a self-starting circuit system and a self-starting solar street lamp, which are respectively described below.

[0024] Figure 1 A structural diagram of an embodiment of the self-starting circuit system provided by the present invention is shown in FIG. Figure 1 As shown, it includes: a self-starting circuit and a solar cell panel 1; the self-starting circuit includes a self-starting unit 2, a power chip 3 and a battery 4; The input end of the self-starting unit 2 is connected to the output end of the solar panel 1 through the diode 7, the output end of the self-starting unit 2 is connected to the enable input end of the power chip 3, the output end of the power chip 3 is connected to the self-starting unit 2, and the output end of the solar panel 1 is connected to the battery 4; Among them, when the diode 7 is turned on, the solar panel 1 provides an output voltage to the self-starting unit 2. When the output voltage is higher than a preset threshold, the self-starting unit 2 generates an enable signal, and the power chip 3 responds to the enable signal to output a working voltage and a self-locking voltage, so that the solar panel 1 charges the battery 4; when the output voltage is lower than the preset threshold, the self-starting unit 2 responds to the self-locking voltage to generate an enable signal to start discharging the battery 4.

[0025] It should be noted that the present embodiment integrates the self-starting unit 2, the power chip 3 and the battery 4 together, and also integrates the control component 5 and the DCDC conversion component 6. The present embodiment takes the solar street light as an example, and integrates the self-starting unit, the power chip, the battery, the control component and the DCDC conversion component together when leaving the factory. During installation, the solar panel is connected to the diode at the input end of the self-starting unit to complete the installation. Compared with the prior art in which each component is separated independently, the components are spliced ​​during on-site installation, which reduces the difficulty and error rate of installation; the diode is used to control the voltage and current so that they can only be transmitted from the solar panel to the self-starting unit.

[0026] It should be further explained that, in the present embodiment, a valid enable signal is a valid enable signal when the voltage at the enable pin of the power chip is greater than 2.5V, and an invalid enable signal is a self-locking voltage when the self-starting unit reduces the operating voltage output by the power chip to a stabilized voltage of 2.5V and then transmits it to the enable pin, so that the enable pin of the power chip is stably maintained at 2.5V, that is, the power chip is locked to continuously output the operating voltage to the outside.

[0027] Specifically, when the solar panel 1 and the self-starting unit 2 are not turned on, there is no enable signal at the output end of the self-starting unit 2. At this time, even if the power chip 3 obtains the input voltage, it will not output the working voltage. The entire self-starting circuit system will be in a dormant state because there is no working voltage. At this time, the entire circuit system has no power consumption, or the power consumption is extremely low; when the solar panel 1 outputs enough voltage, the solar panel 1 and the self-starting unit 2 are turned on, indicating that the solar panel 1 and the self-starting circuit system have been installed, the solar panel 1 starts to generate electricity, and the self-starting unit 2 receives the voltage from the solar panel 1. When the voltage is higher than a preset threshold value, in this embodiment, the preset threshold value is 2.5V, and the voltage at the output end of the self-starting unit 2 is higher than 2.5V, an effective enable signal is generated, and the power chip 3 responds to the effective enable signal to provide working power for the entire self-starting circuit system, and the control component 5 starts to work to control the solar panel 1 through the DCDC conversion component 6 charges the battery 4, and at the same time, the working voltage output by the power chip 3 generates a self-locking voltage through the self-starting unit 2; when the output voltage of the solar panel 1 is insufficient, for example, when the solar street light does not have enough solar power generation at night, at this time, the self-starting unit 2 can still generate an effective enable signal according to the self-locking voltage, and the power chip 3 responds to the effective enable signal to output the working voltage, and the control component 5 controls the battery 4 to discharge outward through the DCDC conversion component 6, and at the same time, the working voltage output by the power chip 3 generates a self-locking voltage through the self-starting unit 2, ensuring that after the self-starting circuit system is installed and the solar panel starts working, the power chip 3 will always provide a self-locking voltage to ensure that the self-starting circuit is always in a working state. On the other hand, a diode 7 is provided between the solar panel 1 and the self-starting unit 2, and electric energy can only be transmitted from the solar panel 1 to the self-starting unit 2. Therefore, the electric energy at the self-starting unit 2 will not be fed back to the solar panel 1.

[0028] In this embodiment, the self-starting unit 2, the power chip 3 and the battery 4 are integrated into a circuit system, the input end of the self-starting unit 2 is connected to the output end of the solar panel 1 through the diode 7, the output end of the self-starting unit 2 is connected to the enable input end of the power chip 3, the output end of the power chip 3 is connected to the self-starting unit 2, and the output end of the solar panel 1 is connected to the battery; wherein, when the diode 7 is turned on, the solar panel 1 provides an output voltage to the self-starting unit 2, when the output voltage is higher than a preset threshold, the self-starting unit 2 generates an enable signal, and the power chip 3 responds to the enable signal to output a working voltage and a self-locking voltage, so that the solar panel 1 charges the battery; when the output voltage is lower than the preset threshold, the self-starting unit 2 generates an enable signal according to the self-locking voltage, and the power chip responds to the enable signal to output a working voltage and a self-locking voltage, so that the battery 4 discharges. The present invention achieves unidirectional conduction between a solar cell panel and a self-starting unit. When the solar cell panel provides an output voltage, the self-starting unit outputs an enable signal according to the magnitude of the output voltage. The power chip responds to the enable signal and outputs an operating voltage to control the charging or discharging of the battery. The self-starting circuit outputs an enable signal according to the output voltage of the solar cell panel, and controls the self-starting circuit system to perform charging and discharging operations according to the enable signal, thereby realizing the self-starting function of the circuit system.

[0029] In some embodiments of the present invention, the self-starting circuit further includes a control component 5 and a DCDC conversion component 6, one end of the control component 5 is connected to the power chip 3, and the other end is connected to the DCDC conversion component 6; The DCDC conversion component 6 is connected to the solar cell panel 1 and the battery 4 respectively.

[0030] It should be noted that the control component 5 is the core component of the solar street light, which controls the charging and discharging of the battery 4. During the day, when the solar panel starts to generate electricity, the control component controls the solar panel to charge the battery. When the light is dim or at night, the control component 5 controls the battery to discharge and provide power for the street light.

[0031] It should be further explained that the DCDC conversion component 6 is a DC to DC converter, which is a power conversion device. It adjusts the voltage and current output of the battery discharge process according to the power of the external power-consuming components, and also adjusts the voltage output by the solar panel to charge the battery and ensure the safety of the battery.

[0032] In some embodiments of the present invention, Figure 2 As shown, Figure 2 A specific circuit diagram of the self-starting circuit system provided by the present invention, wherein the power chip 3 further includes an enable pin EN, a ground pin GND, a feedback pin FB, and output pins OUTP and OUTN; The enable pin EN is connected to the output end of the self-starting unit 2, the ground pin GND is grounded, and the feedback pin FB is connected to the output pin of the power chip 3; The output pins of the power chip 3 are connected to the battery 4 and the self-starting unit 2 respectively.

[0033] It should be noted that the power chip is a chip of model XL6109, which can convert a lower input voltage into a higher output voltage and ensure the stability of the output voltage and current. The power chip has a power of 6W and an input voltage range of 3V to 38V. In this embodiment, the input is a battery voltage of 2.5V to 4.2V, and the output voltage is a fixed 5V. In the figure, the connection line from the output voltage of the power chip to the control circuit is not drawn, and is only shown in the form of a network label "5V".

[0034] It should be further explained that the enable pin EN is used to control the start and stop of the power chip. When the EN pin is at a high level, that is, greater than 2.5V, the power chip starts to work; when the EN pin is at a low level, the chip stops working and enters a dormant state, consuming almost no power; the ground pin GND is connected to the ground position of the power chip. The GND pin is the reference point for all signals, and all signals are referenced to zero potential, making the chip work more stable; the feedback pin FB is used to divide the current output voltage and feed it back to the comparator inside the chip to compare it with the reference voltage Vref. According to the comparison result, the chip will automatically adjust the output voltage to achieve the purpose of stabilizing the voltage; the output pin includes the positive output terminal OUTP and the negative output terminal OUTN. The positive output terminal OUTP is one of the output pins of the power chip, which is used to provide a stable output voltage. In the boost power chip, the voltage output by the OUTP pin is usually higher than the input voltage; the negative output terminal OUTN and the positive output terminal OUTP together constitute the output circuit of the power chip. The output pins OUTP and OUTN of the power chip and the related resistors, capacitors, and inductors constitute the power conversion circuit, which converts the changing battery voltage into a stable working voltage.

[0035] In this embodiment, the self-starting unit provides an effective enable signal to the power chip, and the power chip provides an operating voltage to the self-starting circuit system according to the enable signal.

[0036] In some embodiments of the present invention, Figure 2 As shown, the self-starting unit includes a first resistor 8 and a first voltage stabilizing diode 9; The first resistor 8 is connected in series with the first voltage stabilizing diode 9 to form a voltage stabilizing circuit. One end of the voltage stabilizing circuit is connected to the diode 7 and the control component 5 , and the other end is connected to the ground pin GND of the power chip 3 .

[0037] Specifically, in the present embodiment, the output end of the power chip 3 outputs a 5V voltage, and the output end of the power chip 3 reduces the voltage at the output end of the power chip 3 from 5V to 2.5V through the first voltage stabilizing diode 9 and the first resistor 8, and sends it to the enable pin to keep the automatic enable of the power chip 3 valid, that is, the self-locking voltage, to ensure that the power chip 3 provides a self-locking voltage through the self-starting unit 2 after the output working voltage, to ensure that after the self-starting circuit system is installed and the solar panel starts working, the power chip 3 will always provide a self-locking voltage to ensure that the self-starting circuit is always in a working state.

[0038] In this embodiment, the 5V voltage output by the power chip is stepped down and outputted in a regulated manner through the first resistor and the first voltage stabilizing diode to generate a self-locking voltage. When the solar panel does not generate electricity, the self-locking voltage can ensure that the power chip outputs an operating voltage.

[0039] In some embodiments of the present invention, Figure 2 As shown, the self-starting unit further includes a first capacitor 11; Two ends of the first capacitor 11 are respectively connected to an enable pin and a ground pin of the power chip 3 .

[0040] In this embodiment, when the solar cell panel 1 outputs voltage, the first capacitor 11 is charged through the diode 7, which can gradually increase the voltage of the enable pin of the power chip 3. When the voltage of the first capacitor 11 rises to 2.5V, the voltage of the enable pin of the power chip 3 is 2.5V, and the power chip 3 starts to work and outputs the working voltage.

[0041] In some embodiments of the present invention, Figure 2 As shown, the power chip 3 further includes a second resistor 12 and a third resistor 13, and the second resistor 12 and the third resistor 13 form a voltage feedback sampling circuit; Two ends of the second resistor 12 are respectively connected to the feedback pin and the ground pin of the power chip 3; Two ends of the third resistor 13 are connected to the negative output terminal and the feedback pin of the power chip 3 respectively.

[0042] It should be noted that the feedback pin FB is connected to the negative electrode of the output terminal of the power chip 3 through the third resistor, and the other end is connected to the ground pin of the power chip 3 through the second resistor. The current output voltage is divided and fed back to the comparator inside the chip to be compared with the reference voltage. The power chip 3 automatically adjusts the output voltage according to the comparison result to achieve the purpose of voltage stability.

[0043] In this embodiment, the voltage at the output end of the power chip is fed back through the second resistor and the third resistor, thereby realizing automatic adjustment of the output voltage of the power chip.

[0044] In some embodiments of the present invention, Figure 2 As shown, the power chip 3 also includes a second capacitor 14, a third capacitor 10 and a first inductor 15; One end of the second capacitor 14 is connected to the negative electrode of the output terminal of the power chip 3, and the other end is connected to the ground pin of the power chip 3; One end of the third capacitor 10 is connected to the positive output terminal of the power chip 3 through the first inductor 15 , and the other end is connected to the ground pin of the power chip.

[0045] In this embodiment, the second capacitor is used to filter the working voltage output by the power chip to the control component, thereby eliminating ripples in the 5V working voltage; the third capacitor is used to provide input filtering for the voltage chip to stabilize its operation; the first inductor and the internal switch circuit of the chip are used to adjust the working voltage output by the power chip, and when the battery voltage is within the range of 2.5V to 4.2V, a stable 5V voltage is output, thereby ensuring stable operation of the control component and circuits such as DCDC.

[0046] In some embodiments of the present invention, the DCDC conversion component 6 is externally connected to an electrical component.

[0047] It should be noted that in this embodiment, for example, a solar street light, the electrical component is an LED light.

[0048] In some embodiments of the present invention, the unidirectional conduction direction of the diode is the conduction from the solar cell panel to the self-starting unit; When the diode is not conducting, there is no voltage signal at the input end of the self-starting unit, the self-starting unit has no enabling signal output, and the self-starting circuit system does not work; When the diode 7 is turned on, the solar panel 1 provides an output voltage to the self-starting unit 2. When the output voltage is greater than a preset threshold, the self-starting unit 2 outputs an enable signal. The power chip 3 responds to the enable signal to provide a working voltage to the control component 5. The control component 5 controls the DCDC conversion component 6 to work, thereby controlling the solar panel 1 to charge the battery 4. The power chip 3 provides a self-locking voltage to the self-starting unit 2 through a voltage stabilizing circuit. When the output voltage is less than the preset threshold, the self-starting unit 2 generates an enable signal according to the self-locking voltage, and the power chip 3 responds to the enable signal to provide the operating voltage to the control component 5, and the control component 5 controls the DCDC conversion component 6 to operate, thereby controlling the battery 4 to discharge.

[0049] Specifically, the diode controls the voltage and current to be transmitted only from the solar panel to the self-starting unit. In this embodiment, for example, the solar LED street light uses a diode to connect the solar panel and the self-starting unit. When the solar LED street light is installed, the solar panel starts to work during the day, and the output voltage is transmitted to the self-starting unit through the diode. The self-starting unit generates an enable signal to the power chip according to the received voltage. The power chip responds to the enable signal and outputs the working voltage to the controller. The controller starts to work and controls the solar panel to start charging the battery through the DCDC conversion component. At night or when the light is insufficient, the voltage output by the solar panel is not enough for the self-starting unit to generate an enable signal. At this time, an enable signal is generated according to the self-locking voltage generated by the power chip. The power chip responds to the enable signal and outputs the working voltage, which is output to the control component. The control component controls the battery to discharge to the LED street light through the DCDC conversion component. At this time, the LED street light starts to illuminate. At this time, although there is voltage at the self-starting unit, the solar panel and the self-starting unit are unidirectionally conductive, and the voltage cannot be transmitted to the solar panel through the unidirectional diode, which effectively prevents the electric energy from being backflowed to the solar panel.

[0050] This embodiment connects the solar panel and the self-starting unit through a diode, and self-starts the entire circuit system according to the output voltage of the solar panel, thereby effectively preventing energy consumption and the risk of battery over-discharge damage.

[0051] In order to achieve the above-mentioned purpose, the present invention also provides a self-starting solar street light, including any of the above self-starting circuit systems, and also including: an LED street light, and the self-starting circuit is externally connected to the LED street light.

[0052] It should be noted that in this embodiment, by integrating the self-starting unit, the control component, the DCDC conversion component, the battery chip and the battery, even if the power chip has a voltage input, when the solar panel is not connected to the self-starting unit, the self-starting unit has no output voltage, the power chip has no enable signal, and the power chip will not output the working voltage. At this time, the control circuit cannot work without the working voltage, and the DCDC conversion component does not work. The entire circuit system is in a sleep state with extremely low power consumption or no power consumption. Only after the solar panel is connected to the self-starting unit and the solar panel starts to output voltage, the self-starting unit generates an enable signal according to the output voltage, controls the power chip to work and output the working voltage, and provides the working voltage for the control component, so that the entire circuit system starts to work, and the solar panel starts to charge the battery. The self-starting circuit after such integration is not only simple and convenient in installation, but also makes the self-starting solar street light extremely low in energy consumption or no energy consumption when it is not installed and needs to be stored for a long time, avoiding the problem of battery damage due to over-discharge.

[0053] The above is a detailed introduction to the circuit and method of the solar street lamp self-starting method provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A self-starting circuit system, characterized in that: include: A self-starting circuit and a solar cell panel; the self-starting circuit comprises a self-starting unit, a power chip and a battery; The input end of the self-starting unit is connected to the output end of the solar panel through a diode, the output end of the self-starting unit is connected to the enable input end of the power chip, the output end of the power chip is connected to the self-starting unit, and the output end of the solar panel is connected to the battery; When the diode is turned on, the solar panel provides an output voltage to the self-starting unit. When the output voltage is higher than a preset threshold, the self-starting unit generates an enable signal. The power chip responds to the enable signal to output a working voltage and a self-locking voltage so that the solar panel charges the battery. When the output voltage is lower than the preset threshold, the self-starting unit responds to the self-locking voltage to generate an enable signal so that the battery discharges.

2. The self-starting circuit system according to claim 1, characterized in that: The self-starting circuit system further comprises a control component and a DCDC conversion component, wherein one end of the control component is connected to the power chip, and the other end is connected to the DCDC conversion component; The DCDC conversion component is connected to the solar cell panel and the battery respectively.

3. The self-starting circuit system according to claim 2, characterized in that: The power chip also includes an enable pin, a ground pin, a feedback pin, and an output pin; The enable pin is connected to the output end of the self-starting unit, the ground pin is grounded, and the feedback pin is connected to the output pin; The output pins of the power chip are connected to the control component and the self-starting unit respectively.

4. The self-starting circuit system according to claim 3, characterized in that: The self-starting unit includes a first resistor and a first voltage stabilizing diode; The first resistor is connected in series with the first voltage stabilizing diode to form a voltage stabilizing circuit. One end of the voltage stabilizing circuit is connected to the diode and the control component, and the other end is connected to the ground pin of the power chip.

5. The self-starting circuit system according to claim 4, characterized in that: The self-starting unit also includes a first capacitor; Two ends of the first capacitor are respectively connected to an enable pin and a ground pin of the power chip.

6. The self-starting circuit system according to claim 5, characterized in that: The power chip further includes a second resistor and a third resistor, wherein the second resistor and the third resistor constitute a feedback sampling circuit; Two ends of the second resistor are respectively connected to a feedback pin and a ground pin of the power chip; Two ends of the third resistor are respectively connected to the negative output terminal and the feedback pin of the power chip.

7. The self-starting circuit system according to claim 6, characterized in that: The power chip also includes a second capacitor, a third capacitor and a first inductor; One end of the second capacitor is connected to the negative electrode of the output terminal of the power chip, and the other end is connected to the ground pin of the power chip; One end of the third capacitor is connected to the positive output terminal of the power chip through the first inductor, and the other end is connected to the ground pin of the power chip.

8. The self-starting circuit system according to claim 2, characterized in that: The DCDC conversion component is externally connected to an electrical component.

9. The self-starting circuit system according to claim 4, characterized in that: The unidirectional conduction direction of the diode is the conduction from the solar cell panel to the self-starting unit; When the diode is not conducting, there is no voltage signal at the input end of the self-starting unit, the self-starting unit has no enabling signal output, and the self-starting circuit system does not work; When the diode is turned on, the solar panel provides an output voltage to the self-starting unit. When the output voltage is greater than a preset threshold, the self-starting unit outputs an enable signal. The power chip responds to the enable signal to provide a working voltage to the control component. The control component controls the DCDC conversion component to work, thereby controlling the solar panel to charge the battery. The power chip provides a self-locking voltage to the self-starting unit through the voltage stabilizing circuit. When the output voltage is less than a preset threshold, the self-starting unit generates an enable signal according to the self-locking voltage, the power chip responds to the enable signal to provide an operating voltage to the control circuit, and the control component controls the operation of the DCDC conversion component, thereby controlling the battery discharge.

10. A self-starting solar street light, characterized in that: It comprises the self-starting circuit system as claimed in any one of claims 1 to 9, and further comprises: an LED street lamp, wherein the self-starting circuit system is externally connected to the LED street lamp.

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