CN108092391A - Electrical storage device and solar illuminating system - Google Patents

Abstract

The present invention provides an electric storage device, which is applied to solar energy storage lighting, comprising: a charging indicating circuit, a charging circuit, a storage battery, a lamp driving circuit, a USB output circuit, and an electric quantity indicating circuit; the charging indicating circuit, the charging circuit, The storage battery is electrically connected to the light driving circuit in turn; the USB output circuit and the power indicator circuit are both electrically connected to the storage battery. The electricity storage device uses a hardware circuit to control charging and discharging, does not use a main control unit such as a single chip microcomputer to manage charging and discharging, and has low cost of use.

Description

Power storage device and solar lighting system

technical field

The invention relates to the lighting field, in particular to an electric storage device and a solar lighting system.

Background technique

Globally, more than 1.2 billion people live in areas without and without electricity, accounting for about one-sixth of the world's population. Most of the power storage devices in existing solar lighting systems are charged and discharged by software control through the main control unit. Due to the relatively backward technical culture in these areas lacking power, it is easy to appear in the power storage devices that use the main control unit for software control. Crash phenomenon, once the above-mentioned failure occurs in the product, it is equivalent to a report fee. Lead to the high cost of using solar lighting systems.

Contents of the invention

The object of the present invention is to provide an electric storage device and a solar lighting system to solve the deficiencies of the prior art.

Specifically, the present invention provides an electrical storage device, which is applied to solar energy storage lighting, including: a charging indicating circuit, a charging circuit, a storage battery, a lamp driving circuit, a USB output circuit, and an electric quantity indicating circuit;

The charging circuit, the storage battery and the lamp driving circuit are electrically connected in sequence; the USB output circuit and the electric quantity indicating circuit are both electrically connected to the storage battery; the charging indicating circuit is electrically connected to the charging circuit sexual connection.

As a further improvement of the above technical solution, the charging circuit includes: a charging chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and an inductor ;

The IN pin of the charging chip is respectively connected to the positive input terminal and one end of the first capacitor, and the other end of the first capacitor is grounded; the TIM pin of the charging chip is connected to one end of the second capacitor , the other end of the second capacitor is respectively connected to the CEL pin and the GND pin of the charging chip; the NTC pin of the charging chip is respectively connected to one end of the first resistor and one end of the second resistor connected, the other end of the first resistor is connected to the positive input terminal, the other end of the second resistor is grounded; the BAT pin of the charging chip is connected to one end of the third capacitor and the third resistor respectively. The other end of the third capacitor is connected to the ground, the other end of the third resistor is respectively connected to the RS pin of the charging chip and one end of the inductor; the other end of the inductor is connected to the charging The LX pin of the chip is connected; the fourth capacitor is connected in parallel with the third capacitor, and the fourth resistor is connected in parallel with the third resistor; the BAT pin of the charging chip is used as an output terminal.

As a further improvement of the above technical solution, the lamp driving circuit includes: a step-down chip, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor and an inductor;

The first capacitor is connected in parallel between the IN pin and the GND pin of the step-down chip; the first resistor is connected in parallel between the IN pin and the EN pin of the step-down chip; The IN pin of the chip is connected to the positive input terminal; the SW pin of the step-down chip is connected to one end of the inductor; the other end of the inductor is connected to one end of the second resistor; the other end of the second resistor One end is respectively connected to one end of the third resistor and the FB pin of the step-down chip; the other end of the third resistor is grounded; the second capacitor is connected in parallel with the second resistor; the third capacitor One end of the third capacitor is connected to the common end of the second resistor and the inductor, and the other end of the third capacitor is grounded; the common end of the second resistor and the inductor is used as an output end.

As a further improvement of the above technical solution, the electric quantity indicating circuit includes: a voltage stabilizing output circuit and a plurality of comparison indicating circuits; the stabilizing output circuit provides a reference voltage for the plurality of comparing indicating circuits.

As a further improvement of the above technical solution, the voltage stabilizing output circuit includes: a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, and a 3V voltage stabilizing chip; The first capacitor is connected in parallel between; the second capacitor is connected in parallel between the output terminal of the 3V regulator chip and the ground terminal; the third capacitor is connected in parallel with the first capacitor, and the fourth capacitor is connected in parallel with the ground terminal. The second capacitor is connected in parallel.

As a further improvement of the above technical solution, the comparison indication circuit includes: a comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a light emitting diode; one end of the first resistor is connected to the The reference voltage, the other end of the first resistor is respectively connected to one end of the second resistor and a voltage input end of the comparator, the other end of the second resistor is grounded; one end of the third resistor Connect the positive pole of the storage battery, the other end of the third resistor is respectively connected to one end of the fourth resistor and the other voltage input end of the comparator, and the other end of the fourth resistor is grounded; the comparison The output end of the device is connected to the cathode of the light emitting diode, the anode of the light emitting diode is connected to one end of the fifth resistor, and the other end of the fifth resistor is connected to the reference voltage.

As a further improvement of the above technical solution, the charging indication circuit includes: a light emitting diode, a first resistor, a second resistor, a third resistor, a fourth resistor, and a controllable precision voltage regulator; one end of the first resistor is connected to the positive pole input terminal; the other end of the first resistor is respectively connected to one end of the second resistor and the anode of the light emitting diode; the other end of the second resistor is respectively connected to the cathode of the light emitting diode and the controllable The cathode of the precision voltage stabilization source; the anode of the controllable precision voltage stabilization source is grounded; the reference electrode of the controllable precision voltage stabilization source is respectively connected to one end of the third resistor and one end of the fourth resistor; The other end of the third resistor is connected to the positive input end; the other end of the fourth resistor is grounded.

As a further improvement of the above technical solution, it also includes: a main switch, the main switch is used to control the on-off of the battery and the light driving circuit, the USB output circuit and the power indicator circuit, when the main When the switch is closed, the storage battery is connected to the light driving circuit, the USB output circuit and the battery indicating circuit.

As a further improvement of the above technical solution, multiple 18650 lithium batteries are connected in parallel for the storage battery.

The present invention also provides a solar lighting system, including: including: a solar power supply component, the above-mentioned power storage device, and a lighting lamp; the solar power power supply component is used to convert collected solar energy into electrical energy for the power storage device Charging; the electric storage device is used to store the electric energy for use by the illuminating lamp.

As a further improvement of the above technical solution, the lighting lamp is provided with a brightness gear switch.

As a further improvement of the above technical solution, the lighting lamp uses LED lamp beads with a rated voltage of 2.9V.

Compared with the existing known technology, the technical solution provided by the present invention has at least the following beneficial effects: the electric storage device uses a hardware circuit to control charging and discharging, and does not use a main control unit such as a single-chip microcomputer to manage charging and discharging, and the use cost is low.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of functional modules of an electrical storage device proposed by an embodiment of the present invention.

Figure 2 is a schematic diagram of the electrical connection of the charging circuit.

Fig. 3 is a schematic diagram of the electrical connection of the lamp driving circuit.

FIG. 4 is a schematic diagram of the electrical connection of the output voltage regulator circuit.

Fig. 5 is a schematic diagram of the electrical connection of the comparison indicating circuit.

FIG. 6 is a schematic diagram of the electrical connection of the charging indication circuit.

Fig. 7 is a schematic diagram of the functional modules of the solar lighting system proposed by the embodiment of the present invention.

Description of main component symbols:

10-solar power supply components; 30-electric storage device; 50-lighting lamp; 51-brightness gear switch; 31-charging indicating circuit; 32-charging circuit; 33-battery; 34-main switch; 35-light driving circuit; 36-USB output circuit; 37-power indicator circuit.

Detailed ways

Hereinafter, various embodiments of the present disclosure will be described more fully. The present disclosure is capable of various embodiments, and adaptations and changes are possible therein. It should be understood, however, that there is no intention to limit the scope of the present disclosure to the particular embodiments disclosed herein, but that the disclosure should be construed to cover all modifications, Equivalents and/or Alternatives.

Hereinafter, the terms "comprising" or "may include" that may be used in various embodiments of the present disclosure indicate the presence of disclosed functions, operations, or elements, and do not limit the existence of one or more functions, operations, or elements. Increase. In addition, as used in various embodiments of the present disclosure, the terms "comprising", "having" and their cognates are only intended to represent specific features, numbers, steps, operations, elements, components or combinations of the foregoing, And it should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or adding one or more features, numbers, steps, operations, elements, components or a combination of the foregoing possibilities.

In various embodiments of the present disclosure, the expression "at least one of A or/and B" includes any or all combinations of words listed at the same time. For example, the expression "A or B" or "at least one of A or/and B" may include A, may include B, or may include both A and B.

Expressions (such as 'first', 'second', etc.) used in various embodiments of the present disclosure may modify various constituent elements in various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and/or importance of the elements described. The above expressions are used only for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device indicate different user devices although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present disclosure.

It should be noted that if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and there may be "connection" between the first constituent element and the second constituent element. "The third component. Conversely, when one constituent element is "directly connected" to another constituent element, it can be understood that there is no third constituent element between the first constituent element and the second constituent element.

The term 'user' used in various embodiments of the present disclosure may indicate a person using the electronic device or a device using the electronic device (eg, an artificial intelligence electronic device).

Terms used in various embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the various embodiments of the present disclosure. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present disclosure belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, Unless clearly defined in various embodiments of the present disclosure.

Example 1

As shown in FIG. 1 , the present invention provides an electrical storage device 30 , which is applied to solar energy storage lighting. The power storage device 30 includes: a charging indicating circuit 31 , a charging circuit 32 , a storage battery 33 , a lamp driving circuit 35 , a USB output circuit 36 and a battery indicating circuit 37 .

The charging circuit 32 , the storage battery 33 and the lamp driving circuit 35 are electrically connected in sequence; the USB output circuit 36 and the battery indicator circuit 37 are both electrically connected to the battery 33 ; the charging indicating circuit 31 is electrically connected to the charging circuit 32 .

The USB output circuit 36 is used to charge devices such as mobile phones and mobile power supplies through USB data cables. The power indicator circuit 37 is used to indicate the remaining power of the storage battery 33 .

As shown in Figure 2, in this embodiment, the charging circuit 32 specifically includes: a charging chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the inductor L1.

The specific model of the charging chip U1 can be YB5211B.

The IN pin of the charging chip U1 is respectively connected to the positive input terminal VIN and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded; the TIM pin of the charging chip U1 is connected to one end of the second capacitor C2, and the second capacitor The other end of C2 is respectively connected to the CEL pin and the GND pin of the charging chip U1. The NTC pins of the charging chip U1 are respectively connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the first resistor R1 is connected to the positive input terminal VIN, and the other end of the second resistor R2 is grounded. The BAT pin of the charging chip U1 is respectively connected to one end of the third capacitor C3 and one end of the third resistor R3, the other end of the third capacitor C3 is grounded, and the other end of the third resistor R3 is connected to the RS pin of the charging chip U1 and the other end of the third resistor R3 respectively. One end of the inductor L1 is connected. The other end of the inductor L1 is connected to the LX pin of the charging chip U1; the fourth capacitor C4 is connected in parallel with the third capacitor C3, and the fourth resistor R4 is connected in parallel with the third resistor R3. The fourth capacitor C4 is used as a protection capacitor for the third capacitor C3, and the fourth resistor R4 is used as a protection resistor for the third resistor R3. The BAT pin of the charging chip U1 is used as the output terminal VB. The positive input terminal VIN is used to connect with the positive output terminal of the solar power supply component, so that the solar power supply component charges the power storage device 30 . The output terminal VB is used to connect with the positive pole of the storage battery 33 .

As shown in FIG. 3, in this embodiment, the lamp driving circuit 35 specifically includes: a step-down chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a Three capacitors C3 and inductor L1.

The specific model of the step-down chip U1 can be selected as ME3104.

A first capacitor C1 is connected in parallel between the IN pin of the step-down chip U1 and the GND pin; a first resistor R1 is connected in parallel between the IN pin and the EN pin of the step-down chip U1; the IN pin of the step-down chip U1 Connect the positive input terminal VBAT; the SW pin of the step-down chip U1 is connected to one end of the inductor L1; the other end of the inductor L1 is connected to one end of the second resistor R2; the other end of the second resistor R2 is respectively connected to one end of the third resistor R3 And the FB pin of the step-down chip U1 is connected; the other end of the third resistor R3 is grounded. The second capacitor C2 is connected in parallel with the second resistor R2; one end of the third capacitor C3 is connected to the common end of the second resistor R2 and the inductor L1, and the other end of the third capacitor C3 is grounded. The common terminal of the second resistor R2 and the inductor L1 serves as a 3.3V output terminal. The 3.3V output terminal is used to connect the lighting lamp to realize lighting.

In this embodiment, the power indicator circuit 37 specifically includes: a voltage-stabilizing output circuit and four comparison indicator circuits. The voltage stabilizing output circuit provides reference voltages for the four comparison indicating circuits. The electric quantity indication circuit 37 divides the electric quantity indication of the storage battery 33 into four levels. In other embodiments, the number of comparison indication circuits is selected according to the number of levels divided by the power indication.

As shown in Fig. 4, in this embodiment, the voltage stabilizing output circuit specifically includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a 3V voltage stabilizing chip U1. The 3V voltage stabilizing chip U1 A first capacitor C1 is connected in parallel between the input terminal and the ground terminal; a second capacitor C2 is connected in parallel between the output terminal of the 3V regulator chip U1 and the ground terminal. The third capacitor C3 is connected in parallel with the first capacitor C1, and the fourth capacitor C4 is connected in parallel with the second capacitor C2. The third capacitor C3 is used as a protection capacitor for the first capacitor C1, and the fourth capacitor C4 is used as a protection capacitor for the second capacitor C2. The regulated output circuit provides a 3V reference voltage for use by the comparison indicating circuit.

As shown in Figure 5, in this embodiment, each comparison indication circuit includes: a comparator U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a light emitting diode D1. One end of the first resistor R1 is connected to a 3V reference voltage, the other end of the first resistor R1 is respectively connected to one end of the second resistor R2 and a voltage input end of the comparator U1, and the other end of the second resistor R2 is grounded; the third resistor R3 One end of the third resistor R3 is connected to the positive pole of the storage battery 33, the other end of the third resistor R3 is respectively connected to one end of the fourth resistor R4 and the other voltage input end of the comparator U1, and the other end of the fourth resistor R4 is grounded; the output end of the comparator U1 The cathode of the light emitting diode D1 is connected, the anode of the light emitting diode D1 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to a 3V reference voltage. When the positive output voltage of the storage battery 33 is divided by the third resistor R3 and the fourth resistor R4 and the voltage output to the comparator U1 is higher than the voltage at the other input terminal of the comparator U1, the comparator U1 will be triggered to output a low level, thereby Make the LED D1 light up. The four comparison indicating circuits can adjust the resistance ratio of the third resistor R3 and the fourth resistor R4 so that the more sufficient the battery capacity is, the more indicator lights the battery indicator circuit 37 lights up.

As shown in Figure 6, in this embodiment, the charging indication circuit 31 specifically includes: a light emitting diode D1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a controllable precision voltage regulator U1 .

The specific model of the controllable precision voltage regulator U1 can be TL431.

One end of the first resistor R1 is connected to the positive input terminal VIN; the other end of the first resistor R1 is respectively connected to one end of the second resistor R2 and the anode of the light emitting diode D1. The other end of the second resistor R2 is respectively connected to the cathode of the light-emitting diode D1 and the cathode of the controllable precision voltage regulator U1; the anode of the controllable precision voltage regulator U1 is grounded; the reference electrode of the controllable precision voltage regulator U1 is respectively connected to the third One end of the resistor R3 and one end of the fourth resistor R4 are connected. The other end of the third resistor R3 is connected to the positive input terminal VIN; the other end of the fourth resistor R4 is grounded. The positive input terminal VIN is used to connect with the positive output terminal of the solar power supply component. When the positive input terminal VIN is connected to the positive output terminal of the solar power supply component, the LED D1 lights up to indicate that the solar power supply component starts to charge the power storage device 30 .

As shown in FIG. 7 , in other embodiments, the power storage device 30 further includes: a master switch 34 . The main switch 34 is used to control the on-off of the storage battery 33 and the lamp driving circuit 35, the USB output circuit 36 and the electric quantity indicating circuit 37. 37 are all turned on; when the main switch 34 is turned off, the storage battery 33 is disconnected from the lamp driving circuit 35, the USB output circuit 36 and the power indicator circuit 37.

Storage battery 33 selects a plurality of 18650 lithium batteries to connect in parallel for use.

Example 2

As shown in FIG. 7 , the present invention also provides a solar lighting system, including: a solar power supply assembly 10 , the power storage device 30 described in Embodiment 1, and a lighting lamp 50 . The solar power supply assembly 10 is used to convert the collected solar energy into electrical energy to charge the storage device 30 ; the storage device 30 is used to store the electrical energy for use by the lighting lamp 50 .

The illuminating lamp 50 is provided with a brightness gear switch 51 .

The lighting lamp 50 selects LED lamp beads with a rated voltage of 2.9V. Mainly considering that there is still resistance in the wire between the lamp driving circuit 35 and the lighting lamp 50 , there will be a certain voltage drop.

The solar power supply module 10 can specifically use a battery panel with a rated power of 8W, the maximum supply voltage of the battery panel is 6V, the maximum supply current is 1.34A; the open circuit voltage is 7.2V, and the short circuit current is 1.47A. The length of the battery panel is 255mm, the width is 235mm, and the thickness is 15mm.

Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present invention.

Those skilled in the art can understand that the modules in the devices in the implementation scenario can be distributed among the devices in the implementation scenario according to the description of the implementation scenario, or can be located in one or more devices different from the implementation scenario according to corresponding changes. The modules of the above implementation scenarios can be combined into one module, or can be further split into multiple sub-modules.

The above serial numbers of the present invention are for description only, and do not represent the pros and cons of the implementation scenarios. The above disclosures are only some specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of electrical storage device is illuminated applied to solar energy power accumulating, which is characterized in that including：Charging indication, charge electricity Road, accumulator, lamp drive circuit, USB output circuits and battery capacity indication circuit；

The charging circuit, the accumulator and the lamp drive circuit are electrically connected successively；USB output circuits and described Battery capacity indication circuit is electrically connected with the accumulator；The charging indication is electrically connected with the charging circuit.

2. electrical storage device according to claim 1, which is characterized in that the charging circuit includes：Charging chip, the first electricity Resistance, second resistance, 3rd resistor, the 4th resistance, the first capacitance, the second capacitance, the 3rd capacitance, the 4th capacitance and inductance；

The one end of the IN pins of the charging chip respectively with electrode input end and first capacitance is connected, first electricity The other end ground connection of appearance；The TIM pins of the charging chip are connected with one end of second capacitance, second capacitance it is another One end is connected respectively with the CEL pins and GND pin of the charging chip；The NTC pins of the charging chip respectively with institute One end of first resistor and one end connection of the second resistance are stated, the other end connection anode of the first resistor is defeated Enter end, the other end ground connection of the second resistance；The BAT pins of the charging chip respectively with one end of the 3rd capacitance with And one end connection of the 3rd resistor, the other end ground connection of the 3rd capacitance, the other end of the 3rd resistor respectively with One end connection of the RS pins and the inductance of the charging chip；The LX of the other end of the inductance and the charging chip Pin connects；4th capacitance is in parallel with the 3rd capacitance, and the 4th resistance is in parallel with the 3rd resistor；It is described to fill The BAT pins of electrical chip are as output terminal.

3. electrical storage device according to claim 1, which is characterized in that the lamp drive circuit includes：It is depressured chip, first Resistance, second resistance, 3rd resistor, the first capacitance, the second capacitance, the 3rd capacitance and inductance；

First capacitance is parallel between the IN pins and GND pin of the decompression chip；The IN pins of the decompression chip The first resistor is parallel between EN pins；The IN pins connection electrode input end of the decompression chip；The decompression core The SW pins of piece are connected with one end of the inductance；The other end of the inductance is connected with one end of the second resistance；It is described FB pin of the other end of second resistance respectively with one end of the 3rd resistor and the decompression chip is connected；Described 3rd The other end ground connection of resistance；Second capacitance is in parallel with the second resistance；One end connection described the of 3rd capacitance The common port of two resistance and the inductance, the other end ground connection of the 3rd capacitance；The second resistance and the public affairs of the inductance End is as output terminal altogether.

4. electrical storage device according to claim 1, which is characterized in that the battery capacity indication circuit includes：1 voltage stabilizing output Circuit and multiple relatively indicating circuits, the voltage-stabilizing output circuit provide reference voltage for multiple relatively indicating circuits.

5. electrical storage device according to claim 4, which is characterized in that the voltage-stabilizing output circuit includes：First capacitance, Two capacitances, the 3rd capacitance, the 4th capacitance and 3V voltage stabilizing chips；It is parallel between the input terminal and ground terminal of the 3V voltage stabilizing chips First capacitance；Second capacitance is parallel between the output terminal and ground terminal of the 3V voltage stabilizing chips；3rd electricity Appearance is in parallel with first capacitance, and the 4th capacitance is in parallel with second capacitance.

6. electrical storage device according to claim 4, which is characterized in that the relatively indicating circuit includes：Comparator, first Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and light emitting diode；One end connection institute of the first resistor State reference voltage, the other end of the first resistor respectively with one end of the second resistance and a voltage of the comparator Input terminal connects, the other end ground connection of the second resistance；One end of the 3rd resistor connects the anode of the accumulator, institute Another voltage input end of the other end of 3rd resistor respectively with one end of the 4th resistance and the comparator is stated to be connected, The other end ground connection of 4th resistance；The output terminal of the comparator connects the cathode of the light emitting diode, described to shine The anode of diode connects one end of the 5th resistance, and the other end of the 5th resistance connects the reference voltage.

7. electrical storage device according to claim 1, which is characterized in that the charging indication includes：Light emitting diode, First resistor, second resistance, 3rd resistor, the 4th resistance and controllable accurate source of stable pressure；One end connection of the first resistor is just Pole input terminal；The other end of the first resistor respectively with one end of the second resistance and the anode of the light emitting diode Connection；The other end of the second resistance respectively with the cathode of the light emitting diode and the moon of the controllable accurate source of stable pressure Pole；The plus earth of the controllable accurate source of stable pressure；The reference pole of the controllable accurate source of stable pressure respectively with the 3rd resistor One end and the 4th resistance one end connection；The other end of the 3rd resistor connects the electrode input end；It is described The other end ground connection of 4th resistance.

8. electrical storage device according to claim 1, which is characterized in that further include：Master switch, the master switch are used to control The break-make of the accumulator and the lamp drive circuit, the USB output circuits and the battery capacity indication circuit, is always opened when described When closing conjunction, the accumulator is both turned on the lamp drive circuit, the USB output circuits and the battery capacity indication circuit.

9. a kind of solar illuminating system, which is characterized in that including：Described in solar powered component, claim any one of 1-8 Electrical storage device, headlamp；The solar powered component fills for the solar energy of acquisition to be converted into electric energy to the electric power storage Put charging；The electrical storage device is used to store the electric energy and be used for the headlamp.

10. solar illuminating system according to claim 9, which is characterized in that the headlamp is provided with brightness gear Switch.