CN209282908U - A kind of solar street light power supply system - Google Patents
A kind of solar street light power supply system Download PDFInfo
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- CN209282908U CN209282908U CN201920002214.0U CN201920002214U CN209282908U CN 209282908 U CN209282908 U CN 209282908U CN 201920002214 U CN201920002214 U CN 201920002214U CN 209282908 U CN209282908 U CN 209282908U
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Abstract
The utility model embodiment discloses a kind of solar street light power supply system, including solar battery, battery, controller and load lamp, wherein, the controller includes central control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit, it is characterized in that, the battery is single-lithium-battery core;The major loop of the PWM charging circuit includes the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the grid of first metal-oxide-semiconductor and the grid of the second metal-oxide-semiconductor and the driving circuit of 12V are electrically connected;The PWM discharge circuit includes switching circuit and BOOST circuit, and the BOOST circuit is used to increase the output voltage of the battery.The solar street light power supply system can be powered using single-lithium-battery core for solar street light, and can satisfy demand of the load light source to high output voltage, achieve the purpose that continually and steadily to work, to realize the effective use of single-lithium-battery core.
Description
Technical field
The utility model relates to power supply control field more particularly to a kind of solar street light power supply systems.
Background technique
Solar controller is applied in solar energy photovoltaic system, and full name is solar charging discharging controller, for coordinating
Solar panel, battery, load work, be very important component in photovoltaic system.Make entire photovoltaic system
System is efficient, safe running.Solar street lamp controller is mainly used for family, shopping centre, factory, traffic, pastoral area, communication etc. too
Positive energy power supply system.
Solar street lamp controller is mostly 12V/24V system on the market, with the development of science and technology, present lithium battery
Have become the mainstream of solar street lamp controller battery unit.But as lithium battery applications are more and more, accordingly not
Good elimination product is also more and more, however these superseded lithium battery packs are often that there are problem, big portions for individual battery cores therein
Point battery core be it is normal, single-lithium-battery core with lithium battery pack it is superseded not only can waste of resource, but also environment is caused very big
Pollution.So the utilization of single-lithium-battery core becomes an extremely urgent problem.
Utility model content
The utility model aim is to provide a kind of solar street light power supply system, to solve the above problems.
The utility model solves technical problem and adopts the following technical scheme that
A kind of solar street light power supply system, including solar battery, battery, controller and load lamp, wherein described
Controller includes central control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit, which is characterized in that described
Battery is single-lithium-battery core;
The major loop of the PWM charging circuit includes the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the grid of first metal-oxide-semiconductor
It is electrically connected with the grid of the second metal-oxide-semiconductor with the driving circuit of 12V;
The PWM discharge circuit includes switching circuit and BOOST circuit, and the BOOST circuit is for increasing the electric power storage
The output voltage in pond.
Solar street light power supply system disclosed by the utility model, by accessing 12V on the major loop of PWM charging circuit
Driving circuit, and using the driving circuit of 12V as accessory power supply control the first MOS pipe and the second metal-oxide-semiconductor switch, solution
The problem of metal-oxide-semiconductor caused by low voltage difference of having determined conducting is difficult and metal-oxide-semiconductor generates heat.And BOOST circuit increases the defeated of the battery
Voltage out can satisfy load lamp for the demand of high voltage.So that entire solar street light power supply system can utilize
Single-lithium-battery core powers for solar street light, and can satisfy demand of the load lamp to high output voltage, reaches continual and steady
The purpose of work, to realize the effective use of single-lithium-battery core.
Detailed description of the invention
Fig. 1 is a kind of existing solar street light power supply system;
Fig. 2 is solar street light power supply system circuit diagram provided by the utility model;
The driving circuit signal that Fig. 3 is the 12V of solar street light power supply system PWM charging circuit provided by the utility model
Figure;
Fig. 4 is solar street light power supply system power supply circuit schematic diagram provided by the utility model;
Fig. 5 is the drive circuit schematic diagram of solar street light power supply system PWM discharge circuit provided by the utility model;
Fig. 6 is another solar street light power supply system schematic diagram provided by the utility model.
Specific embodiment
As described in background, the utilization of single-lithium-battery core becomes an extremely urgent problem at present.Inventor
For this problem, is explored by conscientious thinking and single-lithium-battery core is used solar street light power supply system by experiment, discovery
It is a feasible scheme in system.
By carefully analyzing to existing solar street light power supply system, inventor has found existing solar street light power supply
System, comprising: solar battery, battery, controller and load lamp.Wherein, as shown in Figure 1, the controller includes center
Control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit.In physical circuit distribution, central control circuit
It is electrically connected, is mainly controlled by MCU, system voltage is adopted with PWM charging circuit, battery management circuit and PWM discharge circuit respectively
Sample simultaneously imported into control algolithm and is calculated, then to the logical output control signal of entire letter, and finally to the charge and discharge of whole system
Electricity and battery management carry out logic control;Battery management circuit is electrically connected with battery, and respectively with PWM charging circuit and PWM
Discharge circuit electrical connection, internal mainly includes sample circuit, protection circuit and indicator light circuit, and realization is monitored battery
And protection.
It has been investigated that the battery of existing solar street light power supply system is based on the battery of 12V, 12V system
Charging metal-oxide-semiconductor driving circuit inside PWM charging circuit is driven by solar battery pressure difference, i.e., switch metal-oxide-semiconductor driving by
The positive and negative anodes pressure difference of solar battery determines.For single-lithium-battery core, voltage only has 3.2V, solar battery when charging
The pressure difference of positive and negative anodes causes metal-oxide-semiconductor so the driving voltage of switch metal-oxide-semiconductor is too low by single-unit lithium cell voltage clamping to 3.2V
Conducting is difficult, and even if selecting the metal-oxide-semiconductor of low turn-on voltage, metal-oxide-semiconductor also has the risk of fever under the driving voltage of 3.2V.
Inventor aiming at the problem that finding further above, by deeper into thinking and experiment, propose a kind of sun
Energy streetlight power supply system, the solar street light power supply system include solar battery, battery, controller and load lamp, wherein
The controller includes central control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit, which is characterized in that
The battery is single-lithium-battery core;The major loop of the PWM charging circuit includes the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and institute
The grid and the grid of the second metal-oxide-semiconductor and the driving circuit of 12V for stating the first metal-oxide-semiconductor are electrically connected;The PWM discharge circuit includes opening
Powered-down road and BOOST circuit, the BOOST circuit are used to increase the output voltage of the battery.
Above-mentioned solar street light power supply system by the major loop of PWM charging circuit access 12V driving circuit, and
Using the driving circuit of 12V as the switch of accessory power supply control the first metal-oxide-semiconductor and the 2nd MOS pipe, solves low voltage difference and cause
The problem of metal-oxide-semiconductor conducting is difficult and metal-oxide-semiconductor fever.And BOOST circuit increases the output voltage of the battery, Neng Gouman
Demand of the sufficient load lamp for high voltage.So that entire solar street light power supply system can using single-lithium-battery core come for
Solar street light power supply, and can satisfy demand of the load lamp to high output voltage, achieve the purpose that continually and steadily to work, thus
Realize the effective use of single-lithium-battery core.
The technical solution of the utility model is further elaborated below with reference to examples and drawings.
Present embodiments provide a kind of solar street light power supply system, including solar battery, battery, controller and negative
Lamp is carried, the controller includes central control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit.Wherein, institute
Stating battery is single-lithium-battery core.For the central control circuit by STM32 chip as master chip, STM32 chip has 12
The channel AD, can be realized system voltage and samples and imported into control algolithm and calculated, and then export control signal to system.Electricity
Pond management circuit includes that sample circuit (can recognize cell voltage 2.8V-8.4V, and sample reaching to input and output electric current
To the purpose of control electric current), protection circuit and indicator light circuit, for being monitored and protecting to battery.
As shown in Fig. 2, the major loop of the PWM charging circuit includes the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and described
The grid of the grid of first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are electrically connected with the driving circuit of 12V;
The PWM discharge circuit includes switching circuit and BOOST circuit, and the BOOST circuit is for increasing the electric power storage
The output voltage in pond.
Specifically, drain electrode and the solar battery of the first metal-oxide-semiconductor Q1 in the major loop of the PWM charging circuit
Cathode PV- electrical connection, the grid of the first metal-oxide-semiconductor Q1 are electrically connected with the driving circuit of 12V;
The grid of the second metal-oxide-semiconductor Q2 is electrically connected with the driving circuit of 12V, and passes through first resistor R1 and described the
The source electrode of one metal-oxide-semiconductor Q1 is electrically connected, and the source electrode of the second metal-oxide-semiconductor Q2 is electrically connected with the source electrode of the first metal-oxide-semiconductor Q1, described
The drain electrode of second metal-oxide-semiconductor Q2 is electrically connected by the parallel connection of second resistance R20 and 3rd resistor R3 with battery terminal negative BAT-.
In addition, being additionally provided with a two-way TVS pipe, between the positive and negative anodes of solar battery to prevent rushing for high current
It hits, protects controller.
As shown in figure 3, the driving circuit of the 12V, comprising:
Emitter input the first PWM wave PWQG_pv of third transistor Q3, the third transistor Q3, the described 3rd 3
The base stage of pole pipe Q3 is grounded by the 4th resistance R4, the collector of the third transistor Q3 and the anode electricity of first diode D1
Connection;
The emitter of 4th triode Q4, the 4th triode Q4 are grounded, and the base stage of the 4th triode Q4 passes through
5th resistance R5 accesses the solar battery anode PV+, the collector of the 4th triode Q4 and the second diode D2's
Anode electrical connection;
The anode of third diode D3, the third diode D3 are electrically connected with solar battery cathode PV-, and pass through the
Six resistance R6 access the solar battery anode PV+, the cathode of the third diode D3 pass sequentially through the 7th resistance R7 and
8th resistance R8 is electrically connected with the cathode of the cathode of the first diode D1 and the second diode D2 respectively;
The base stage of 5th triode Q5, the 5th triode Q5 pass through the 7th resistance R7's and third diode D3
The collector of cathode electrical connection, the 5th triode Q5 accesses power supply circuit, the 5th triode by the 9th resistance R9
The emitter of Q5 is electrically connected with the source electrode of the source electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 respectively;
The collector of 6th triode Q6, the 6th triode Q6 are electrically connected by the tenth resistance R10 with power supply circuit,
The emitter of the 6th triode Q6 is electrically connected with the grid of the grid of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 respectively,
The base stage of the 6th triode Q6 cathode and the 5th with the collector of the 5th triode Q5, the 4th diode D4 respectively
The cathode of diode D5 is electrically connected, and the anode of the 4th diode D4 is electrically connected with the emitter of the 5th triode Q5,
The anode of the 5th diode D5 is electrically connected by eleventh resistor R11 with the emitter of the 6th triode Q6.
Such as Fig. 4, the power supply circuit, comprising:
Boost chip U1, the boost chip U1 include NC interface, IN interface, EN interface, SW interface, GND interface and FB
Interface;
Wherein, the IN interface passes through the first wire-wound inductor L1 by the earth of first capacitor C1, the second capacitor C2
It is electrically connected with the anode of the 6th diode D2, and is electrically connected by twelfth resistor R12 with the cathode of the 7th diode D7, it is described
The positive BAT+ electrical connection of the anode battery of 7th diode D7;
The EN interface is electrically connected by thirteenth resistor R13 with the IN interface;
The SW interface is electrically connected with the anode of the 6th diode D6;
The GND interfacing ground;
Parallel connection and the cathode of the sixth diode D6 of the FB interface by the 14th resistance R14 and third capacitor C3
Electrical connection, and be grounded by the 15th resistance R15;
The cathode of the 6th diode D6 is electrically connected with the driving circuit of the 12V, and passes through the 4th capacitor C4, the 5th
The earth of capacitor C5 and the 6th capacitor C6.
In specific works, the voltage of monolithic machine testing solar battery positive and negative end is to judge solar photocell
It is no to have electricity, if the voltage of solar battery positive and negative end is greater than the voltage at accumulator anode and cathode both ends, and accumulator positive at this time
The voltage at cathode both ends then needs to charge lower than the charging voltage of setting.At this point, the first PWM wave PWQG_pv of single-chip microcontroller output
Low level, third transistor Q3 shutdown are provided, the 5th triode Q5 base stage is turned off without high level, and the 6th triode Q6 base stage is
High level conducting, it is 12V that power supply circuit, which exports VDD, and VDD manages the first metal-oxide-semiconductor Q1 and the 2nd MOS by the 6th triode Q6
Q2 conducting starts to charge to battery battery.First PWM wave high level for a period of time, MOS pipe is turned off, and detect battery
Voltage continues to charge a battery if battery voltage is lower than setting value.If battery voltage, which is higher than setting value, will close the
One metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 stops charging.The PWM charging circuit can control solar battery by set charging
Curve charges to battery, and avoid battery because over-discharge, overcharge, superpressure due to damage.
As shown in Fig. 2, the BOOST circuit, comprising:
The anode of Schottky diode SBD, the Schottky diode SBD pass through the second wire-wound inductor L2 and battery
Positive BAT+ electrical connection, the cathode of the Schottky diode SBD is electrically connected with the positive LOAD+ of the load lamp, with the 7th
There is electrode capacitance C7 anode and the 8th to have the electrical connection of electrode capacitance C8 anode, and there is electrode capacitance C7 and the 8th to have extremely electricity by the described 7th
Hold and C8's and connects ground;
The drain electrode of 7th metal-oxide-semiconductor Q7, the 7th metal-oxide-semiconductor Q7 are electrically connected with the anode of the Schottky diode SBD,
The grid of the 7th metal-oxide-semiconductor Q7 accesses the driving circuit of PWM discharge circuit, the 7th metal-oxide-semiconductor by the 16th resistance R16
The source electrode of Q7 is electrically connected by the 17th resistance R17 with the grid of the 7th metal-oxide-semiconductor Q7;
The grid of 8th metal-oxide-semiconductor Q8, the 8th metal-oxide-semiconductor Q8 pass through the 18th resistance R18 and battery positive voltage BAT+ electricity
Connection, the source electrode of the 8th metal-oxide-semiconductor Q8 are electrically connected with the source electrode of the 7th metal-oxide-semiconductor Q7, and pass through the 19th resistance R19
It is electrically connected with the grid of the 8th metal-oxide-semiconductor Q8, the drain electrode of the 8th metal-oxide-semiconductor Q8 passes through second resistance R2 and 3rd resistor R3
Parallel connection be electrically connected with the cathode BAT- of the battery, and there is the cathode of electrode capacitance C7 and the 8th to have pole with the described 7th respectively
The cathode of capacitor C8 is electrically connected.
The switching circuit, comprising:
9th metal-oxide-semiconductor Q9, the drain electrode of the 9th metal-oxide-semiconductor Q9 are electrically connected with the load lamp cathode LOAD-, and described
The source electrode of nine metal-oxide-semiconductor Q9 is electrically connected by the 20th resistance R20 with the grid of the 9th metal-oxide-semiconductor Q9, and the 21st electricity is passed through
Resistance R21 has the cathode of electrode capacitance C7 and the 8th to have the cathode of electrode capacitance C8 be electrically connected with the described 7th respectively, and passes through described the
Seven have electrode capacitance C7 and the 8th have electrode capacitance C8's and even be electrically connected with the positive LOAD+ of the load lamp, the 9th metal-oxide-semiconductor
The grid of Q9 is electrically connected by the 22nd resistance R22 with the driving circuit of PWM discharge circuit.
As shown in figure 5, the driving circuit of the PWM discharge circuit, comprising:
Driving chip U2, the driving chip U2 include that INA interface, GND interface, INB interface, OUTA interface, VS connect
Mouth, OUTB interface and two NC interfaces;
Wherein, the INA interface is grounded by the 23rd resistance R23, and passes through the 24th resistance R24 access the
Two PWM wave PWQ9G_load;
The GND interfacing ground;
The INB interface accesses third PWM wave PWQ7G_boost by the 25th resistance R25, and passes through the 26th
Resistance R26 ground connection;
Two NC interfaces are electrically connected and are grounded by the 27th resistance R27;
The OUTA interface accesses the switching circuit, and passes through the 22nd resistance R22 and the 9th metal-oxide-semiconductor
The grid of Q9 is electrically connected;
The VS interface accesses power supply circuit, and passes through the earth of the 9th capacitor C19 and the tenth capacitor C10;
The OUTB interface accesses the BOOST circuit, and passes through the 16th resistance R16 and the 7th metal-oxide-semiconductor
The grid of Q7 is electrically connected.
In addition, being additionally provided with a two-way TVS pipe between the positive and negative anodes of battery, to prevent the impact of high current, protect
Protect controller.
In specific works, is connected, passed through by Boost circuit between battery positive voltage BAT+ and load lamp anode LOAD+
Boost circuit can make output voltage be higher than input voltage, to achieve the purpose that boosting, wherein passing through identification load lamp string
Number, single-chip microcontroller can automatically adjust the driving signal of the 7th metal-oxide-semiconductor Q7, and the driving signal of the 7th metal-oxide-semiconductor Q7 is by the second core of single-chip microcontroller
Piece U2 is obtained, so that output voltage stabilization, so that load lamp will not flash.
As shown in fig. 6, the solar street light power supply system, further includes wireless communication device, and the wireless communication fills
It sets and is electrically connected with the central control circuit.
In addition, the sheathing material of the solar street light power supply system is aluminium, external electromagnetic wave can be shielded to internal electricity
Road influences and the internal electromagnetic wave outside radiation generated, and enhances heat dissipation.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations;
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement;And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (9)
1. a kind of solar street light power supply system, including solar battery, battery, controller and load lamp, wherein the control
Device processed includes central control circuit, PWM charging circuit, battery management circuit and PWM discharge circuit, which is characterized in that the storage
Battery is single-lithium-battery core;
The major loop of the PWM charging circuit includes the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the grid of first metal-oxide-semiconductor and the
The grid of two metal-oxide-semiconductors is electrically connected with the driving circuit of 12V;
The PWM discharge circuit includes switching circuit and BOOST circuit, and the BOOST circuit is for increasing the battery
Output voltage.
2. solar street light power supply system according to claim 1, which is characterized in that the drain electrode of first metal-oxide-semiconductor with too
The cathode electrical connection of positive energy battery, the grid of first metal-oxide-semiconductor are electrically connected with the driving circuit of 12V;Second metal-oxide-semiconductor
Grid is electrically connected with the driving circuit of 12V, and is electrically connected by first resistor with the source electrode of first metal-oxide-semiconductor, described second
The source electrode of metal-oxide-semiconductor is electrically connected with the source electrode of first metal-oxide-semiconductor, and the drain electrode of second metal-oxide-semiconductor passes through second resistance and third
The parallel connection of resistance is electrically connected with battery terminal negative.
3. solar street light power supply system according to claim 2, which is characterized in that the driving circuit of the 12V, comprising:
Third transistor, the emitter of the third transistor input the first PWM wave, and the base stage of the third transistor passes through the
Four resistance eutral groundings, the collector of the third transistor are electrically connected with the anode of first diode;
4th triode, the emitter ground connection of the 4th triode, the base stage of the 4th triode are connect by the 5th resistance
Enter the solar battery anode, the collector of the 4th triode is electrically connected with the anode of the second diode;
The anode of third diode, the third diode is electrically connected with solar battery cathode, and is accessed by the 6th resistance
Solar battery anode, the cathode of the third diode pass sequentially through the 7th resistance and the 8th resistance respectively with described the
The electrical connection of the cathode of the cathode of one diode and the second diode;
The base stage of 5th triode, the 5th triode is electrically connected by the 7th resistance with the cathode of the third diode,
The collector of 5th triode by the 9th resistance access power supply circuit, the emitter of the 5th triode respectively with institute
State the source electrode electrical connection of the source electrode and the second metal-oxide-semiconductor of the first metal-oxide-semiconductor;
The collector of 6th triode, the 6th triode is electrically connected by the tenth resistance with power supply circuit, and the described 6th 3
The emitter of pole pipe is electrically connected with the grid of the grid of first metal-oxide-semiconductor and the second metal-oxide-semiconductor respectively, the 6th triode
Base stage is electrically connected with collector, the cathode of the 4th diode and the cathode of the 5th diode of the 5th triode respectively, institute
The anode for stating the 4th diode is electrically connected with the emitter of the 5th triode, and the anode of the 5th diode passes through the tenth
One resistance is electrically connected with the emitter of the 6th triode.
4. solar street light power supply system according to claim 3, which is characterized in that the power supply circuit, comprising:
Boost chip, the boost chip include NC interface, IN interface, EN interface, SW interface, GND interface and FB interface;
Wherein, the IN interface passes through the first wire-wound inductor and the six or two pole by first capacitor, the earth of the second capacitor
The anode electrical connection of pipe, and be electrically connected by twelfth resistor with the cathode of the 7th diode, the anode of the 7th diode
The anode electrical connection of the battery;
The EN interface is electrically connected by thirteenth resistor with the IN interface;
The SW interface is electrically connected with the anode of the 6th diode;
The GND interfacing ground;
The FB interface is electrically connected by the parallel connection of the 14th resistance and third capacitor with the cathode of the 6th diode, and is led to
Cross the 15th resistance eutral grounding;
The cathode of 6th diode is electrically connected with the driving circuit of the 12V, and passes through the 4th capacitor, the 5th capacitor and the
The earth of six capacitors.
5. solar street light power supply system according to claim 4, which is characterized in that the BOOST circuit, comprising:
The anode of Schottky diode, the Schottky diode is electrically connected by the second wire-wound inductor with battery positive voltage, institute
The cathode for stating Schottky diode is electrically connected with the anode of the load lamp, has electrode capacitance anode and the 8th to have electrode capacitance with the 7th
Anode electrical connection, and have electrode capacitance and the 8th having an electrode capacitance and connect ground by the described 7th;
7th metal-oxide-semiconductor, the drain electrode of the 7th metal-oxide-semiconductor are electrically connected with the anode of the Schottky diode, the 7th metal-oxide-semiconductor
Grid the driving circuit of PWM discharge circuit is accessed by the 16th resistance, the source electrode of the 7th metal-oxide-semiconductor passes through the 17th electricity
Resistance is electrically connected with the grid of the 7th metal-oxide-semiconductor;
The grid of 8th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor is electrically connected by the 18th resistance with battery positive voltage, the 8th MOS
The source electrode of pipe is electrically connected with the source electrode of the 7th metal-oxide-semiconductor, and is electrically connected by the grid of the 19th resistance and the 8th metal-oxide-semiconductor
It connecing, the drain electrode of the 8th metal-oxide-semiconductor is electrically connected by the parallel connection of second resistance and 3rd resistor with the cathode of the battery, and
There is the cathode of electrode capacitance and the 8th to there is the cathode of electrode capacitance to be electrically connected with the described 7th respectively.
6. solar street light power supply system according to claim 5, which is characterized in that the switching circuit, comprising:
The drain electrode of 9th metal-oxide-semiconductor, the 9th metal-oxide-semiconductor is electrically connected with the load lamp cathode, and the source electrode of the 9th metal-oxide-semiconductor is logical
It crosses the 20th resistance to be electrically connected with the grid of the 9th metal-oxide-semiconductor, have respectively with the described 7th by the 21st resistance extremely electric
The cathode of appearance and the 8th have electrode capacitance cathode be electrically connected, and by the described 7th have electrode capacitance and the 8th have electrode capacitance and even
It is electrically connected with the anode of the load lamp, the grid of the 9th metal-oxide-semiconductor passes through the drive of the 22nd resistance and PWM discharge circuit
Dynamic circuit electrical connection.
7. solar street light power supply system according to claim 6, which is characterized in that the driving electricity of the PWM discharge circuit
Road, comprising:
Driving chip, the driving chip include INA interface, GND interface, INB interface, OUTA interface, VS interface, OUTB interface
With two NC interfaces;
Wherein, the INA interface accesses the second PWM wave by the 23rd resistance eutral grounding, and by the 24th resistance;
The GND interfacing ground;
The INB interface accesses third PWM wave by the 25th resistance, and passes through the 26th resistance eutral grounding;
Two NC interfaces are electrically connected and pass through the 27th resistance eutral grounding;
The OUTA interface accesses the switching circuit, and passes through the grid of the 22nd resistance and the 9th metal-oxide-semiconductor
Electrical connection;
The VS interface accesses power supply circuit, and passes through the earth of the 9th capacitor and the tenth capacitor;
The OUTB interface accesses the BOOST circuit, and passes through the grid of the 16th resistance and the 7th metal-oxide-semiconductor electricity
Connection.
8. solar street light power supply system according to claim 1, which is characterized in that further include wireless communication device, and institute
Wireless communication device is stated to be electrically connected with the central control circuit.
9. solar street light power supply system according to claim 1, which is characterized in that the solar street light power supply system
Sheathing material is aluminium.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112332518A (en) * | 2020-10-26 | 2021-02-05 | 成都华体慧城科技有限公司 | Environmental protection wisdom street lamp |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112332518A (en) * | 2020-10-26 | 2021-02-05 | 成都华体慧城科技有限公司 | Environmental protection wisdom street lamp |
CN112332518B (en) * | 2020-10-26 | 2021-10-22 | 成都华体慧城科技有限公司 | Environmental protection wisdom street lamp |
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