Aviation obstruction light voltage boosting and reducing voltage stabilizing circuit

Abstract

A fifth pin of a control chip IC1 is connected with one end of a resistor R4, and the other end of the resistor R4 is connected to the base electrode of a triode Q2 and the base electrode of a triode Q3. The emitting electrodes of the triode Q2 and the triode Q3 are converged and then connected to the grid electrode of the N-MOS tube Q4; a second pin of the control chip IC1 is connected to a collector electrode of a triode Q3 and a source electrode of an N-MOS tube Q4 through a capacitor C3; the eighth pin of the control chip IC1 is connected to the collector electrode of the triode Q3 and the source electrode of the N-MOS tube Q4 through a capacitor C5; the drain electrode of the N-MOS tube Q4 is connected with one end of a capacitor C6, the other end of the capacitor C6 is connected with one end of a diode D2, and the other end of the diode D2 is led out to a first voltage stabilization output end. According to the utility model, voltage reduction and current limiting effects of a mains supply and solar power supply are realized, solar energy can be fully utilized, and the service life of the storage battery is protected.

Description

Technical Field

[0001] The utility model relates to a voltage-raising and voltage-lowering stabilizing circuit for an aviation obstruction light, belonging to the technical field of power supply. Background Art

[0002] Aviation obstruction lights use solar photovoltaic panels (or wind turbines) to charge batteries as the power source for obstruction lights in places where it is inconvenient to connect to 220V power; in places where it is convenient to connect to 220V power, they are directly powered by the mains power supply. However, in some special places, there is both unstable mains power supply and insufficient sunlight. In this case, both types of power are needed.

[0003] There are many times when there is insufficient sunlight, that is, the voltage of the solar panel is lower than the battery voltage most of the time, and the battery cannot be charged normally at this time. When there is sufficient light, the voltage of the solar panel is high, and the charging current will be too large, resulting in a reduction in the battery life. It is necessary to develop a voltage-boosting and voltage-reducing circuit for aviation obstruction lights. Utility Model Content

[0004] The utility model aims to provide a voltage-raising and voltage-reducing and voltage-stabilizing circuit for an aviation obstruction light, so as to realize the voltage-raising and voltage-reducing and voltage-stabilizing of the aviation obstruction light, so as to make full use of solar energy and protect the life of the battery.

[0005] The utility model solves the above technical problems with the following technical solutions: an aviation obstruction light voltage-up and voltage-down stabilizing circuit, including a control chip IC1, a resistor R4, a transistor Q2, a transistor Q3, an N-MOS tube Q4, a capacitor C3, a capacitor C5, a capacitor C6 and a diode D2;

[0006] The fifth pin of the control chip IC1 is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the base of the transistor Q2 and the transistor Q3 respectively; the emitters of the transistor Q2 and the transistor Q3 are connected to the gate of the N-MOS transistor Q4 after merging;

[0007] The second pin of the control chip IC1 is connected to the collector of the transistor Q3 via the capacitor C3, and the second pin of the control chip IC1 is also connected to the source of the N-MOS transistor Q4 via the capacitor C3;

[0008] The 8th pin of the control chip IC1 is connected to the collector of the transistor Q3 via the capacitor C5, and the 8th pin of the control chip IC1 is also connected to the source of the N-MOS transistor Q4 via the capacitor C5;

[0009] The drain of the N-MOS tube Q4 is connected to one end of the capacitor C6, the other end of the capacitor C6 is connected to one end of the diode D2, and the other end of the diode D2 is led to the first voltage-stabilizing output end.

[0010] As a preferred solution for the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light, it also includes a capacitor C1, a diode D1, a resistor R1, a capacitor C2, a triode Q1 and a coil L1;

[0011] One end of the diode D1 is connected to one end of the resistor R1, and the connected diode D1 and the resistor R1 are connected in parallel with the capacitor C1; the base of the transistor Q1 is connected between the diode D1 and the resistor R1; the emitter of the transistor Q1 is connected to one end of the capacitor C2, the emitter of the transistor Q1 is also connected to the collector of the transistor Q2, and the emitter of the transistor Q1 is also connected to the 7th pin of the control chip IC1;

[0012] One end of the capacitor C1, the other end of the resistor R1, and the collector of the transistor Q1 are connected to the positive input end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light;

[0013] The other end of the capacitor C1, the other end of the diode D1, and the other end of the capacitor C2 are commonly connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light;

[0014] The positive input terminal is connected to the capacitor C6 via the coil L1.

[0015] As a preferred solution of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light, it also includes a resistor R2, a resistor R3, and a capacitor C4; one end of the resistor R2, one end of the resistor R3, and one end of the capacitor C4 are commonly connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light;

[0016] The other end of the resistor R2 is connected to the 4th pin of the control chip IC1; the other end of the resistor R3 is connected to the 7th pin of the control chip IC1; the other end of the capacitor C4 is connected to the 7th pin of the control chip IC1.

[0017] As a preferred solution of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light, it also includes a coil L2 and a diode D3, one end of the coil L2 is connected between the capacitor C6 and the diode D2; one end of the diode D3 is connected between the capacitor C6 and the diode D2, and the other end of the diode D3 leads to a second voltage-stabilizing output end;

[0018] The other end of the coil L2 is connected to the negative output end of the voltage step-up and step-down stabilizing circuit of the aviation obstruction light.

[0019] As a preferred solution of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light, it also includes a resistor R5 and a variable resistor VR; one end of the resistor R5 is connected to one end of the variable resistor VR, and the first pin of the control chip IC1 is connected between the resistor R5 and the variable resistor VR;

[0020] The other end of the resistor R5 is connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light;

[0021] The collector of the transistor Q3 and the source of the N-MOS tube Q4 are both connected to the negative output end of the voltage step-up and step-down stabilizing circuit of the aviation obstruction light.

[0022] As a preferred solution for the voltage step-up and step-down stabilizing circuit of the aviation obstruction light, a capacitor C7 is also included, and the capacitor C7 is connected between the negative output terminal and the positive input terminal.

[0023] The utility model has the beneficial effects of comprising a control chip IC1, a resistor R4, a transistor Q2, a transistor Q3, an N-MOS transistor Q4, a capacitor C3, a capacitor C5, a capacitor C6 and a diode D2; the 5th pin of the control chip IC1 is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the base of the transistor Q2 and the transistor Q3 respectively; the emitters of the transistor Q2 and the transistor Q3 are connected to the gate of the N-MOS transistor Q4 after merging; the 2nd pin of the control chip IC1 is connected to the gate of the N-MOS transistor Q4 through the capacitor C 3 is connected to the collector of transistor Q3, and the second pin of control chip IC1 is also connected to the source of N-MOS tube Q4 via capacitor C3; the 8th pin of control chip IC1 is connected to the collector of transistor Q3 via capacitor C5, and the 8th pin of control chip IC1 is also connected to the source of N-MOS tube Q4 via capacitor C5; the drain of N-MOS tube Q4 is connected to one end of capacitor C6, and the other end of capacitor C6 is connected to one end of diode D2, and the other end of diode D2 is led to the first voltage-stabilized output terminal. The utility model realizes the voltage reduction and current limiting functions of the mains power supply and solar power supply, which can fully utilize the solar energy and protect the life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 A schematic diagram of a voltage-boosting and voltage-reducing circuit for an aviation obstruction light provided in an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the application of the voltage step-up and step-down stabilizing circuit for aviation obstruction lights provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] In the related art, in places where it is inconvenient to connect to a 220V power supply, aviation obstruction lights use solar photovoltaic panels (or wind turbines) to charge batteries as the power supply for the obstruction lights; in places where it is convenient to connect to a 220V power supply, they are directly powered by the mains power supply. However, in some special places, there is the problem of unstable mains power supply and insufficient sunlight. In this way, the two types of electricity need to be used together. Since there is more often insufficient sunlight, that is, the voltage generated by the solar panel is lower than the battery voltage most of the time, and the battery cannot be charged normally at this time. When there is sufficient light, the voltage of the solar panel is high, and the charging current will be too large, resulting in a reduction in the service life of the battery.

[0031] In view of this, in order to solve this problem, the technical solution of this embodiment is that when the voltage of the solar panel is lower than the battery voltage, the voltage-boosting and voltage-reducing circuit of the aviation obstruction light works in the voltage-boosting state, so as to achieve the purpose of charging even in weak light; when the light is sufficient, the voltage-boosting and voltage-reducing circuit of the aviation obstruction light works in the voltage-reducing and current-limiting state. The following is the specific content of the embodiment of this utility model.

[0032] See also Figure 1 and Figure 2 The embodiment of the utility model provides an aviation obstruction light voltage step-up and step-down stabilizing circuit, including a control chip IC1, a resistor R4, a transistor Q2, a transistor Q3, an N-MOS transistor Q4, a capacitor C3, a capacitor C5, a capacitor C6 and a diode D2;

[0033] Among them, the 5th pin of the control chip IC1 is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the base of the transistor Q2 and the transistor Q3 respectively; the emitters of the transistor Q2 and the transistor Q3 are connected to the gate of the N-MOS tube Q4 after merging; the 2nd pin of the control chip IC1 is connected to the collector of the transistor Q3 through the capacitor C3, and the 2nd pin of the control chip IC1 is also connected to the source of the N-MOS tube Q4 through the capacitor C3; the 8th pin of the control chip IC1 is connected to the collector of the transistor Q3 through the capacitor C5, and the 8th pin of the control chip IC1 is also connected to the source of the N-MOS tube Q4 through the capacitor C5; the drain of the N-MOS tube Q4 is connected to one end of the capacitor C6, and the other end of the capacitor C6 is connected to one end of the diode D2, and the other end of the diode D2 is led to the first voltage-stabilized output end.

[0034] In this embodiment, it also includes a capacitor C1, a diode D1, a resistor R1, a capacitor C2, a transistor Q1 and a coil L1; one end of the diode D1 is connected to one end of the resistor R1, and the connected diode D1 and resistor R1 are connected in parallel with the capacitor C1; the base of the transistor Q1 is connected between the diode D1 and the resistor R1; the emitter of the transistor Q1 is connected to one end of the capacitor C2, the emitter of the transistor Q1 is also connected to the collector of the transistor Q2, and the emitter of the transistor Q1 is also connected to the 7th pin of the control chip IC1; one end of the capacitor C1, the other end of the resistor R1, and the collector of the transistor Q1 are commonly connected to the positive input end of the step-up and step-down voltage stabilization circuit of the aviation obstruction light; the other end of the capacitor C1, the other end of the diode D1, and the other end of the capacitor C2 are commonly connected to the negative output end of the step-up and step-down voltage stabilization circuit of the aviation obstruction light; the positive input end is connected to the capacitor C6 via the coil L1.

[0035] In this embodiment, a resistor R2, a resistor R3, and a capacitor C4 are also included; one end of the resistor R2, one end of the resistor R3, and one end of the capacitor C4 are commonly connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light; the other end of the resistor R2 is connected to the 4th pin of the control chip IC1; the other end of the resistor R3 is connected to the 7th pin of the control chip IC1; the other end of the capacitor C4 is connected to the 7th pin of the control chip IC1;

[0036] It also includes a coil L2 and a diode D3, one end of the coil L2 is connected between the capacitor C6 and the diode D2; one end of the diode D3 is connected between the capacitor C6 and the diode D2, and the other end of the diode D3 leads to a second voltage-stabilized output end; the other end of the coil L2 is connected to the negative output end of the voltage-boosting and voltage-reducing voltage-stabilizing circuit of the aviation obstruction light.

[0037] In this embodiment, it also includes a resistor R5 and a variable resistor VR; one end of the resistor R5 is connected to one end of the variable resistor VR, and the first pin of the control chip IC1 is connected between the resistor R5 and the variable resistor VR; the other end of the resistor R5 is connected to the negative output end of the step-up and step-down voltage stabilizing circuit of the aviation obstruction light; the collector of the transistor Q3 and the source of the N-MOS tube Q4 are both connected to the negative output end of the step-up and step-down voltage stabilizing circuit of the aviation obstruction light; and also includes a capacitor C7, which is connected between the negative output end and the positive input end.

[0038] The principle of the voltage-boosting and voltage-reducing circuit of the aviation obstruction light of this embodiment is as follows:

[0039] The control chip IC1 uses FP5139, which can work at low voltage and adjust the pulse width modulation with a wide range. At the same time, a pair of high-speed switching PNP transistors Q2 and NPN transistors Q3 are used. The transistors Q2 and Q3 form a high-speed waveform shaping circuit to provide the N-MOS tube Q4 with a square wave with the largest amplitude and steep front and rear edges, thereby improving the reaction speed of the N-MOS tube Q4 and the power conversion efficiency. The on-off of the N-MOS tube Q4 controls the charging and discharging of the capacitor C6 and the on-off of the primary coil L1 of the transformer T. Thus, the primary coil L1, the secondary coil L2, the capacitor C6 and the diode D2 of the transformer T controlled by the N-MOS tube Q4 have the rectifier output function, realizing the DC-DC step-up and step-down transformer function.

[0040] Among them, in order to obtain a stable output voltage, a voltage-dividing sampling circuit is set at the output end. The resistor R5 is connected in series with the variable resistor VR. The voltage-dividing sampling is performed from the resistor R5 and fed back to the first pin of the control chip IC1. The control chip IC1 compares the sampled voltage with the reference voltage deviation, adjusts the output pulse width, and outputs it through the fifth pin, thereby obtaining a stable output voltage. It can be seen from the sampling circuit that adjusting the resistance value of the variable resistor VR can change the output voltage regulation value. In order to prevent the sampling circuit from consuming the energy of the battery, a diode D3 is connected to the positive pole of the diode D2 as a real output circuit to charge the battery. This aviation obstruction light step-up and step-down voltage regulation circuit is used for solar panels to charge batteries. When the sunlight is sufficient, the voltage of the solar panel is higher than the battery voltage. This step-up and step-down voltage regulation circuit is a step-down voltage regulation circuit. When the light is relatively weak, the voltage of the solar panel is lower than the battery voltage (it cannot be charged directly). This circuit becomes a step-up voltage regulation circuit and continues to charge the battery to make full use of the energy of sunlight. Regardless of the intensity of the light, this circuit has a regulated output. That is, when the sun is bright, the battery will not be overcharged, thus protecting the battery life. It can still be charged when the sun is weak.

[0041] In this embodiment, the function of the control chip IC1 is to compare the deviation between the voltage of the sampling circuit and the reference voltage. If the positive deviation increases, the voltage pulse width (duty cycle D) of the 5th foot will decrease, otherwise the pulse width will increase. The pulse width signal is coupled to the push-pull circuit composed of NPN transistor Q2 and PNP transistor Q3 through resistor R4. The push-pull circuit amplifies the pulse width signal and then drives the N-MOS tube Q4 to turn on and off. When Q4 is turned on, the input voltage Uin stores energy for the inductor L1, and at the same time, the capacitor C6 and the inductor L2 form a loop to achieve energy conversion. The positive pole of the diode D2 is lower than the potential of the capacitor C7 and is turned off; when Q4 is turned off, the voltage of the diode D2 is equal to Uin plus the induced electromotive force of L1 plus the voltage on the capacitor C6, which is greater than the voltage on the capacitor C7. The diode D2 is turned on and its current charges the capacitor C7. The voltage of the capacitor C7 is the output voltage Uout of this buck-boost circuit = Uin*D / (1-D). It can be seen from the formula that when the duty cycle D is greater than 50%, it is a boost circuit, and when it is less than 50%, it is a buck circuit; the capacity of capacitor C7 must be large enough to reduce the ripple of the output voltage. The adjustable variable resistor VR and the resistor R5 are the voltage divider circuit of the sampling circuit, sampling from the resistor R5, and are also the load of the output voltage, so that the output voltage reaches a dynamic balance. Capacitor C1 is the filter capacitor of the input voltage, absorbing the ripple of the voltage. The transistor Q1, the resistor R1, the diode D2, and the capacitor C2 form an emitter follower series voltage regulator circuit, which provides the control chip IC1 with a working power supply not higher than 8.5 volts. Capacitor C3 provides the control chip IC1 with a soft start voltage. Resistor R2 provides a normal working voltage signal setting for the protection pin 4 of the control chip IC1. Resistor R3 and capacitor C4 are part of the RC oscillator circuit in the control chip IC1. The frequency of the pulse width signal can be changed by changing the numbers of R and C. Capacitor C5 is the output filter of the voltage sampling amplifier. It can be seen from the sampling circuit that adjusting the resistance value of the variable resistor VR can change the output voltage. In order to prevent the sampling circuit from consuming the energy of the battery, the circuit of the utility model adds a diode D3 at the positive electrode of the diode D2 as a real output circuit. That is, the battery is charged through the diode D3, and the diode D3 prevents the battery from discharging to the buck-boost circuit. The buck-boost and current limiting functions of the mains power supply and the solar power supply are realized, which can fully utilize the solar energy and protect the life of the battery.

[0042] It should be emphasized that Figure 1 , Figure 2 The circuit components not described or illustrated in detail belong to the prior art and will not be described in detail here.

[0043] 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.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A voltage-boosting and voltage-reducing circuit for aviation obstruction lights, characterized in that: It includes a control chip IC1, a resistor R4, a transistor Q2, a transistor Q3, an N-MOS transistor Q4, a capacitor C3, a capacitor C5, a capacitor C6 and a diode D2; The fifth pin of the control chip IC1 is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the base of the transistor Q2 and the transistor Q3 respectively; the emitters of the transistor Q2 and the transistor Q3 are connected to the gate of the N-MOS transistor Q4 after merging; The second pin of the control chip IC1 is connected to the collector of the transistor Q3 via the capacitor C3, and the second pin of the control chip IC1 is also connected to the source of the N-MOS transistor Q4 via the capacitor C3; The 8th pin of the control chip IC1 is connected to the collector of the transistor Q3 via the capacitor C5, and the 8th pin of the control chip IC1 is also connected to the source of the N-MOS transistor Q4 via the capacitor C5; The drain of the N-MOS tube Q4 is connected to one end of the capacitor C6, the other end of the capacitor C6 is connected to one end of the diode D2, and the other end of the diode D2 is led to the first voltage-stabilizing output end.

2. According to claim 1, the voltage-boosting and voltage-reducing stabilizing circuit for aviation obstruction lights is characterized in that: It also includes capacitor C1, diode D1, resistor R1, capacitor C2, transistor Q1 and coil L1; One end of the diode D1 is connected to one end of the resistor R1, and the connected diode D1 and the resistor R1 are connected in parallel with the capacitor C1; the base of the transistor Q1 is connected between the diode D1 and the resistor R1; the emitter of the transistor Q1 is connected to one end of the capacitor C2, the emitter of the transistor Q1 is also connected to the collector of the transistor Q2, and the emitter of the transistor Q1 is also connected to the 7th pin of the control chip IC1; One end of the capacitor C1, the other end of the resistor R1, and the collector of the transistor Q1 are connected to the positive input end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light; The other end of the capacitor C1, the other end of the diode D1, and the other end of the capacitor C2 are commonly connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light; The positive input terminal is connected to the capacitor C6 via the coil L1.

3. The voltage-boosting and voltage-reducing stabilizing circuit for aviation obstruction lights according to claim 2 is characterized in that: It also includes a resistor R2, a resistor R3, and a capacitor C4; one end of the resistor R2, one end of the resistor R3, and one end of the capacitor C4 are commonly connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light; The other end of the resistor R2 is connected to the 4th pin of the control chip IC1; the other end of the resistor R3 is connected to the 7th pin of the control chip IC1; the other end of the capacitor C4 is connected to the 7th pin of the control chip IC1.

4. The voltage-boosting and voltage-reducing stabilizing circuit for aviation obstruction lights according to claim 3 is characterized in that: It also includes a coil L2 and a diode D3, one end of the coil L2 is connected between the capacitor C6 and the diode D2; one end of the diode D3 is connected between the capacitor C6 and the diode D2, and the other end of the diode D3 leads to a second voltage-stabilized output end; The other end of the coil L2 is connected to the negative output end of the voltage step-up and step-down stabilizing circuit of the aviation obstruction light.

5. The voltage-boosting and voltage-reducing stabilizing circuit for aviation obstruction lights according to claim 4 is characterized in that: It also includes a resistor R5 and a variable resistor VR; one end of the resistor R5 is connected to one end of the variable resistor VR, and the first pin of the control chip IC1 is connected between the resistor R5 and the variable resistor VR; The other end of the resistor R5 is connected to the negative output end of the voltage-boosting and voltage-reducing stabilizing circuit of the aviation obstruction light; The collector of the transistor Q3 and the source of the N-MOS tube Q4 are both connected to the negative output end of the voltage step-up and step-down stabilizing circuit of the aviation obstruction light.

6. The voltage-boosting and voltage-reducing stabilizing circuit for aviation obstruction lights according to claim 5, characterized in that: The device further comprises a capacitor C7, wherein the capacitor C7 is connected between the negative output terminal and the positive input terminal.

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