Integrated street lamp system of MPPT (maximum power point tracking) type solar double-path charging and discharging

Abstract

The utility model provides an integrated street lamp system of an MPPT (maximum power point tracking) type solar double-path charging and discharging light source, which comprises a solar panel, a charging circuit, a lithium battery pack, a single chip microcomputer U2, a driving circuit, an LED (light-emitting diode) lamp group, a first power supply circuit and a second power supply circuit, the second end of the second power supply circuit is electrically connected with the output end of the lithium battery pack; the first power supply circuit comprises a voltage-regulating and current-limiting circuit and a voltage-reducing and voltage-stabilizing circuit, the first end of the voltage-regulating and current-limiting circuit is electrically connected with the power supply end of the single chip microcomputer U2, the second end of the voltage-regulating and current-limiting circuit is electrically connected with the output end of the solar panel, and the first end of the voltage-reducing and voltage-stabilizing circuit is electrically connected with the second end of the voltage-regulating and current-limiting circuit; the second end of the voltage reducing and stabilizing circuit is grounded. According to the utility model, the voltage-regulating current-limiting circuit and the voltage-reducing voltage-stabilizing circuit are arranged, so that the system can be stably started by high voltage of the solar panel, and normal operation of the system is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, and in particular to an integrated street lamp system of an MPPT-type solar dual-path charging and discharging light source. Background Art

[0002] With the country's vigorous promotion of new energy in recent years, solar street lights are widely used.

[0003] In the prior art, solar street lights generally charge lithium iron phosphate batteries through solar panels, and then the lithium iron phosphate batteries power the microcontroller and LEDs. However, when powered on, if the lithium iron phosphate battery is too low, the microcontroller cannot start normally. It is necessary to wait for the battery to be charged to a certain level before the microcontroller can be started, which affects the normal operation of the system. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes an integrated street lamp system of an MPPT type solar dual-path charging and discharging light source.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integrated street lamp system of an MPPT type solar dual-channel charging and discharging light source, comprising: a solar panel, a charging circuit, a lithium battery pack, a single-chip microcomputer U2, a driving circuit and an LED lamp group, wherein the input end of the lithium battery pack is electrically connected to the solar panel through the charging circuit, the output end of the lithium battery pack is electrically connected to the driving circuit, the first driving end of the single-chip microcomputer U2 is electrically connected to the driving circuit, and the driving circuit is electrically connected to the LED lamp group; the integrated street lamp system also includes: a second power supply circuit, the first end of the second power supply circuit is electrically connected to the power supply end of the single-chip microcomputer U2, and the second end of the second power supply circuit is electrically connected to the output end of the lithium battery pack; the first power supply circuit comprises a voltage-regulating current-limiting circuit and a voltage-stepping voltage-stabilizing circuit, the first end of the voltage-regulating current-limiting circuit is electrically connected to the power supply end of the single-chip microcomputer U2, the second end of the voltage-regulating current-limiting circuit is electrically connected to the output end of the solar panel, the first end of the voltage-stepping voltage-stabilizing circuit is electrically connected to the second end of the voltage-regulating current-limiting circuit, and the second end of the voltage-stepping voltage-stabilizing circuit is grounded.

[0006] In one embodiment, the voltage regulation and current limiting circuit includes a twentieth diode D20 and a thirteenth resistor R13, the anode of the twentieth diode D20 is electrically connected to the output end of the solar panel, the cathode of the twentieth diode D20 is electrically connected to the second end of the thirteenth resistor R13, and the first end of the thirteenth resistor R13 is electrically connected to the power supply end of the single-chip computer U2.

[0007] In one embodiment, the step-down voltage stabilizing circuit includes a voltage stabilizing diode D18 and an eighth capacitor C8, the cathode of the voltage stabilizing diode D18 and the first end of the eighth capacitor C8 are electrically connected to the first end of the thirteenth resistor R13, and the anode of the voltage stabilizing diode D18 and the second end of the eighth capacitor C8 are grounded.

[0008] In one embodiment, the first power supply circuit includes a seventeenth diode D17 and a fifth resistor R5, the anode of the seventeenth diode D17 is electrically connected to the output end of the lithium battery pack, the cathode of the seventeenth diode D17 is electrically connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is electrically connected to the power supply end of the single-chip computer U2.

[0009] In one of the embodiments, it also includes a solar panel voltage detection circuit and a battery voltage detection circuit;

[0010] The first end of the solar panel voltage detection circuit is electrically connected to the output end of the solar panel, and the second end of the solar panel voltage detection circuit is electrically connected to the first detection end of the single chip computer U2;

[0011] The first end of the battery voltage detection circuit is electrically connected to the output end of the lithium battery pack, and the second end of the battery voltage detection circuit is electrically connected to the second detection end of the single chip computer U2.

[0012] In one embodiment, the solar panel voltage detection circuit includes a first resistor R1, a tenth resistor R10, a twelfth resistor R12 and a sixth capacitor C6;

[0013] A first end of the first resistor R1 is electrically connected to the output end of the solar panel and a first end of the tenth resistor R10, a second end of the first resistor R1 is electrically connected to a first detection end of the single-chip computer U2, a first end of the twelfth resistor R12 and a first end of the sixth capacitor C6, and a second end of the tenth resistor R10, a second end of the twelfth resistor R12 and a second end of the sixth capacitor C6 are grounded.

[0014] In one embodiment, the battery voltage detection circuit includes a fifteenth resistor R15, a seventeenth resistor R17 and a fifth capacitor C5, the first end of the fifteenth resistor R15 is electrically connected to the output end of the lithium battery pack, the second end of the fifteenth resistor R15 is electrically connected to the first end of the seventeenth resistor R17, the first end of the fifth capacitor C5 and the second detection end of the single-chip computer U2, and the second end of the seventeenth resistor R17 and the second end of the fifth capacitor C5 are grounded.

[0015] In one embodiment, the charging circuit includes an eighth transistor Q8, an eleventh transistor Q11, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a twenty-fifth resistor R25;

[0016] The collector of the eleventh transistor Q11 is connected to the output end of the solar panel, the emitter of the eleventh transistor Q11 is electrically connected to the first end of the sixteenth capacitor C16, the first end of the seventeenth capacitor C17, the second end of the twenty-fifth resistor R25 and the emitter of the eighth transistor Q3, and the base of the eleventh transistor Q11 is electrically connected to the first end of the twenty-fifth resistor R25 and the first end of the eighteenth capacitor C18;

[0017] The collector of the eighth transistor Q8 is electrically connected to the input end of the lithium battery pack;

[0018] The second end of the sixteenth capacitor C16, the second end of the seventeenth capacitor C17 and the second end of the eighteenth capacitor C18 are grounded.

[0019] In one embodiment, a power detection circuit is further included, wherein the power detection circuit includes a parallel diode D83, a nineteenth resistor R19, a twenty-second resistor R22, a fourth capacitor C4 and a fourteenth capacitor C14;

[0020] The cathode of the parallel diode D83 is electrically connected to the collector of the eighth transistor Q8, and the anode of the parallel diode D83 is electrically connected to the first end of the nineteenth resistor R19 and the first end of the twenty-second resistor R22;

[0021] The second end of the twenty-second resistor R22 is electrically connected to the first end of the fourth capacitor C4, the second end of the fourteenth capacitor C14 and the third detection end of the single-chip computer U2, the first end of the fourteenth capacitor C14 is electrically connected to the fourth detection end of the single-chip U2, and the second end of the fourth capacitor C4 and the second end of the nineteenth resistor R19 are grounded.

[0022] In one embodiment, the driving circuit includes a third resistor R3, a twenty-fifth resistor R25, a fifth transistor Q5 and a tenth transistor Q10;

[0023] The first end of the third resistor R3 is electrically connected to the first driving end of the single chip microcomputer U2 and the base of the triode Q10, the second end of the third resistor R3 and the emitter of the triode Q10 are grounded, and the collector of the triode Q10 is electrically connected to the LED lamp group;

[0024] A first end of the twenty-fifth resistor R25 is electrically connected to a first driving end of the single chip computer U2 and a base of the fifth transistor Q5;

[0025] The second end of the twenty-fifth resistor R25 and the emitter of the fifth transistor Q5 are grounded, and the collector of the fifth transistor Q5 is electrically connected to the LED lamp group.

[0026] Compared with the prior art, the beneficial effect of the present invention is that: compared with the prior art mentioned in the background technology, the present invention sets a voltage-regulating current-limiting circuit and a voltage-step-down stabilizing circuit respectively connected to the power supply end of the microcontroller U2 and the output end of the solar panel. When the voltage of the lithium battery pack is 0V, the high voltage of the solar panel can also stably start the system to avoid affecting the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Figure 1 A system schematic diagram of an integrated street lamp system of an MPPT type solar dual-path charging and discharging light source provided by the utility model;

[0029] Figure 2 A circuit diagram of a first power supply circuit and a second power supply circuit provided in an embodiment of the utility model;

[0030] Figure 3 A system schematic diagram of another MPPT solar dual-channel charging and discharging light source integrated street lamp system provided by the utility model;

[0031] Figure 4 A circuit diagram of a solar panel voltage detection circuit provided by an embodiment of the utility model;

[0032] Figure 5 A circuit diagram of a battery voltage detection circuit provided by an embodiment of the utility model;

[0033] Figure 6 A circuit diagram of a charging circuit provided in an embodiment of the utility model;

[0034] Figure 7 A system schematic diagram of another MPPT solar dual-channel charging and discharging light source integrated street lamp system provided by the utility model;

[0035] Figure 8 A partial circuit diagram of a power detection circuit provided by an embodiment of the utility model;

[0036] Fig. 9 A circuit diagram of a driving circuit provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0040] In this specification, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] like Figure 1 As shown, the utility model provides an integrated street lamp system of MPPT type solar dual-channel charging and discharging light source, including: a solar panel, a charging circuit, a lithium battery pack, a single-chip microcomputer U2, a drive circuit and an LED lamp group, the input end of the lithium battery pack is electrically connected to the solar panel through the charging circuit, the output end of the lithium battery pack is electrically connected to the drive circuit, the first drive end of the single-chip microcomputer U2 is electrically connected to the drive circuit, and the drive circuit is electrically connected to the LED lamp group; the integrated street lamp system also includes:

[0043] a second power supply circuit, wherein a first end of the second power supply circuit is electrically connected to a power supply end of the single-chip computer U2, and a second end of the second power supply circuit is electrically connected to an output end of the lithium battery pack;

[0044] The first power supply circuit includes a voltage regulating and current limiting circuit and a voltage step-down stabilizing circuit, wherein the first end of the voltage regulating and current limiting circuit is electrically connected to the power supply end of the single-chip computer U2, the second end of the voltage regulating and current limiting circuit is electrically connected to the output end of the solar panel, the first end of the voltage step-down stabilizing circuit is electrically connected to the second end of the voltage regulating and current limiting circuit, and the second end of the voltage step-down stabilizing circuit is grounded.

[0045] Compared with the prior art mentioned in the background technology, the utility model sets a voltage-regulating current-limiting circuit and a voltage-step-down stabilizing circuit which are respectively connected to the power supply end of the microcontroller U2 and the output end of the solar panel. When the voltage of the lithium battery pack is 0V, the high voltage of the solar panel can also stably start the system to avoid affecting the normal operation of the system.

[0046] like Figure 2 As shown, the voltage regulation and current limiting circuit includes a twentieth diode D20 and a thirteenth resistor R13, the anode of the twentieth diode D20 is electrically connected to the output end of the solar panel, the cathode of the twentieth diode D20 is electrically connected to the second end of the thirteenth resistor R13, and the first end of the thirteenth resistor R13 is electrically connected to the power supply end of the single-chip computer U2. When the battery end is 0V, the solar panel voltage needs to pass through the twentieth diode D20 and the thirteenth resistor R13 for voltage regulation and current limiting.

[0047] Furthermore, the step-down voltage stabilization circuit includes a voltage stabilizing diode D18 and an eighth capacitor C8, the cathode of the voltage stabilizing diode D18 and the first end of the eighth capacitor C8 are electrically connected to the first end of the thirteenth resistor R13, and the anode of the voltage stabilizing diode D18 and the second end of the eighth capacitor C8 are grounded. After the voltage of the solar panel is regulated and current limited by the twentieth diode D20 and the thirteenth resistor R13, the voltage of the solar panel is stepped down and stabilized by the eighteenth diode D18 and the eighth capacitor C8 to supply power to the single-chip microcomputer chip, ensuring that when the voltage of the lithium battery pack is 0V, the high voltage of the solar panel can also stably start the system.

[0048] Furthermore, the first power supply circuit includes a seventeenth diode D17 and a fifth resistor R5, the anode of the seventeenth diode D17 is electrically connected to the output end of the lithium battery pack, the cathode of the seventeenth diode D17 is electrically connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is electrically connected to the power supply end of the single-chip computer U2. The voltage of the lithium battery pack can supply power to the single-chip computer through the step-down voltage stabilization circuit of the first power supply circuit.

[0049] like Figure 3 As shown, the integrated street light system also includes a solar panel voltage detection circuit and a battery voltage detection circuit; the first end of the solar panel voltage detection circuit is electrically connected to the output end of the solar panel, and the second end of the solar panel voltage detection circuit is electrically connected to the first detection end of the single-chip computer U2; the first end of the battery voltage detection circuit is electrically connected to the output end of the lithium battery pack, and the second end of the battery voltage detection circuit is electrically connected to the second detection end of the single-chip computer U2. Preferably, the voltage detection circuit also includes a second resistor R2 and a third resistor R3, the second resistor R2 and the third resistor R3 are connected in parallel, the first end of the second resistor R2 is electrically connected to the first end of the twenty-third resistor R23, and the second end of the second resistor R2 is electrically connected to the first end of the nineteenth resistor R19.

[0050] Specifically, by setting the above circuit, it is possible to detect in real time whether there is an abnormality in the solar panel voltage and the lithium battery pack voltage, so that the system operation can be stopped in time to further ensure the safety of the system.

[0051] Preferably, if Figure 4 As shown, the solar panel voltage detection circuit includes a first resistor R1, a tenth resistor R10, a twelfth resistor R12 and a sixth capacitor C6; a first end of the first resistor R1 is electrically connected to the output end of the solar panel and a first end of the tenth resistor R10, a second end of the first resistor R1 is electrically connected to a first detection end of the single-chip computer U2, a first end of the twelfth resistor R12 and a first end of the sixth capacitor C6, and a second end of the tenth resistor R10, a second end of the twelfth resistor R12 and a second end of the sixth capacitor C6 are grounded.

[0052] Preferably, if Figure 5 As shown, the battery voltage detection circuit includes a fifteenth resistor R15, a seventeenth resistor R17 and a fifth capacitor C5, the first end of the fifteenth resistor R15 is electrically connected to the output end of the lithium battery pack, the second end of the fifteenth resistor R15 is electrically connected to the first end of the seventeenth resistor R17, the first end of the fifth capacitor C5 and the second detection end of the single-chip computer U2, and the second end of the seventeenth resistor R17 and the second end of the fifth capacitor C5 are grounded.

[0053] Preferably, if Figure 6 As shown, the charging circuit includes an eighth triode Q8, an eleventh triode Q11, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a twenty-fifth resistor R25; the collector of the eleventh triode Q11 is connected to the output end of the solar panel, the emitter of the eleventh triode Q11 is electrically connected to the first end of the sixteenth capacitor C16, the first end of the seventeenth capacitor C17, the second end of the twenty-fifth resistor R25 and the emitter of the eighth triode Q3, the base of the eleventh triode Q11 is electrically connected to the first end of the twenty-fifth resistor R25 and the first end of the eighteenth capacitor C18; the collector of the eighth triode Q8 is electrically connected to the input end of the lithium battery pack; the second end of the sixteenth capacitor C16, the second end of the seventeenth capacitor C17 and the second end of the eighteenth capacitor C18 are grounded.

[0054] like Figure 6-8 As shown, the integrated street lamp system also includes a power detection circuit, which includes a parallel diode D83, a nineteenth resistor R19, a twenty-second resistor R22, a fourth capacitor C4 and a fourteenth capacitor C14; the cathode of the parallel diode D83 is electrically connected to the collector of the eighth transistor Q8, and the anode of the parallel diode D83 is electrically connected to the first end of the nineteenth resistor R19 and the first end of the twenty-second resistor R22; the second end of the twenty-second resistor R22 is electrically connected to the first end of the fourth capacitor C4, the second end of the fourteenth capacitor C14 and the third detection end of the single-chip computer U2, the first end of the fourteenth capacitor C14 is electrically connected to the fourth detection end of the single-chip U2, and the second end of the fourth capacitor C4 and the second end of the nineteenth resistor R19 are grounded.

[0055] Specifically, the nineteenth resistor R19 samples the charging current, and the twenty-second resistor R22, the fourteenth capacitor C14, the fourth capacitor C4 and the internal amplifier of the microcontroller U2 form a signal amplification circuit to amplify the current signal and then perform AD conversion to facilitate power tracking.

[0056] Preferably, if Fig. 9As shown, the driving circuit includes a third resistor R3, a twenty-fifth resistor R25, a fifth transistor Q5 and a tenth transistor Q10; the first end of the third resistor R3 is electrically connected to the first driving end of the single-chip computer U2 and the base of the tenth transistor Q10, the second end of the third resistor R3 and the emitter of the tenth transistor Q10 are grounded, and the collector of the tenth transistor Q10 is electrically connected to the LED lamp group; the first end of the twenty-fifth resistor R25 is electrically connected to the first driving end of the single-chip computer U2 and the base of the fifth transistor Q5; the second end of the twenty-fifth resistor R25 and the emitter of the fifth transistor Q5 are grounded, and the collector of the fifth transistor Q5 is electrically connected to the LED lamp group.

[0057] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0058] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0059] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An integrated street light system with MPPT solar dual-channel charging and discharging light source, include: A solar panel, a charging circuit, a lithium battery pack, a single-chip microcomputer U2, a drive circuit and an LED light group, wherein the input end of the lithium battery pack is electrically connected to the solar panel through the charging circuit, the output end of the lithium battery pack is electrically connected to the drive circuit, the first drive end of the single-chip microcomputer U2 is electrically connected to the drive circuit, and the drive circuit is electrically connected to the LED light group; characterized in that the integrated street light system also includes: a second power supply circuit, wherein a first end of the second power supply circuit is electrically connected to a power supply end of the single-chip computer U2, and a second end of the second power supply circuit is electrically connected to an output end of the lithium battery pack; The first power supply circuit includes a voltage regulating and current limiting circuit and a voltage step-down stabilizing circuit, wherein the first end of the voltage regulating and current limiting circuit is electrically connected to the power supply end of the single-chip computer U2, the second end of the voltage regulating and current limiting circuit is electrically connected to the output end of the solar panel, the first end of the voltage step-down stabilizing circuit is electrically connected to the second end of the voltage regulating and current limiting circuit, and the second end of the voltage step-down stabilizing circuit is grounded.

2. According to claim 1, the integrated street lamp system of the MPPT type solar dual-path charging and discharging light source, It is characterized in that The voltage-regulating and current-limiting circuit includes a twentieth diode D20 and a thirteenth resistor R13, wherein an anode of the twentieth diode D20 is electrically connected to the output end of the solar panel, a cathode of the twentieth diode D20 is electrically connected to the second end of the thirteenth resistor R13, and a first end of the thirteenth resistor R13 is electrically connected to the power supply end of the single-chip computer U2.

3. According to claim 2, the MPPT solar dual-channel charging and discharging light source integrated street lamp system, It is characterized in that The step-down voltage stabilizing circuit includes a voltage stabilizing diode D18 and an eighth capacitor C8, the cathode of the voltage stabilizing diode D18 and the first end of the eighth capacitor C8 are electrically connected to the first end of the thirteenth resistor R13, and the anode of the voltage stabilizing diode D18 and the second end of the eighth capacitor C8 are grounded.

4. According to claim 3, the MPPT solar dual-channel charging and discharging light source integrated street lamp system, It is characterized in that The first power supply circuit includes a seventeenth diode D17 and a fifth resistor R5, the anode of the seventeenth diode D17 is electrically connected to the output end of the lithium battery pack, the cathode of the seventeenth diode D17 is electrically connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is electrically connected to the power supply end of the single-chip computer U2.

5. The integrated street lamp system of the MPPT type solar dual-path charging and discharging light source according to any one of claims 1 to 4, It is characterized in that It also includes a solar panel voltage detection circuit and a battery voltage detection circuit; The first end of the solar panel voltage detection circuit is electrically connected to the output end of the solar panel, and the second end of the solar panel voltage detection circuit is electrically connected to the first detection end of the single chip computer U2; The first end of the battery voltage detection circuit is electrically connected to the output end of the lithium battery pack, and the second end of the battery voltage detection circuit is electrically connected to the second detection end of the single chip computer U2.

6. The MPPT solar dual-path charging and discharging light source integrated street lamp system according to claim 5, It is characterized in that The solar panel voltage detection circuit includes a first resistor R1, a tenth resistor R10, a twelfth resistor R12 and a sixth capacitor C6; A first end of the first resistor R1 is electrically connected to the output end of the solar panel and a first end of the tenth resistor R10, a second end of the first resistor R1 is electrically connected to a first detection end of the single-chip computer U2, a first end of the twelfth resistor R12 and a first end of the sixth capacitor C6, and a second end of the tenth resistor R10, a second end of the twelfth resistor R12 and a second end of the sixth capacitor C6 are grounded.

7. The integrated street lamp system of MPPT type solar dual-path charging and discharging light source according to claim 5, It is characterized in that The battery voltage detection circuit includes a fifteenth resistor R15, a seventeenth resistor R17 and a fifth capacitor C5, a first end of the fifteenth resistor R15 is electrically connected to the output end of the lithium battery pack, a second end of the fifteenth resistor R15 is electrically connected to the first end of the seventeenth resistor R17, a first end of the fifth capacitor C5 and a second detection end of the single-chip computer U2, and a second end of the seventeenth resistor R17 and a second end of the fifth capacitor C5 are grounded.

8. The integrated street lamp system of the MPPT type solar dual-path charging and discharging light source according to claim 1, It is characterized in that The charging circuit includes an eighth transistor Q8, an eleventh transistor Q11, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18 and a twenty-fifth resistor R25; The collector of the eleventh transistor Q11 is connected to the output end of the solar panel, the emitter of the eleventh transistor Q11 is electrically connected to the first end of the sixteenth capacitor C16, the first end of the seventeenth capacitor C17, the second end of the twenty-fifth resistor R25 and the emitter of the eighth transistor Q3, and the base of the eleventh transistor Q11 is electrically connected to the first end of the twenty-fifth resistor R25 and the first end of the eighteenth capacitor C18; The collector of the eighth transistor Q8 is electrically connected to the input end of the lithium battery pack; The second end of the sixteenth capacitor C16, the second end of the seventeenth capacitor C17 and the second end of the eighteenth capacitor C18 are grounded.

9. The integrated street lamp system of the MPPT type solar dual-path charging and discharging light source according to claim 8, It is characterized in that Also includes a power detection circuit, the power detection circuit includes a parallel diode D83, a nineteenth resistor R19, a twenty-second resistor R22, a fourth capacitor C4 and a fourteenth capacitor C14; The cathode of the parallel diode D83 is electrically connected to the collector of the eighth transistor Q8, and the anode of the parallel diode D83 is electrically connected to the first end of the nineteenth resistor R19 and the first end of the twenty-second resistor R22; The second end of the twenty-second resistor R22 is electrically connected to the first end of the fourth capacitor C4, the second end of the fourteenth capacitor C14 and the third detection end of the single-chip computer U2, the first end of the fourteenth capacitor C14 is electrically connected to the fourth detection end of the single-chip computer U2, and the second end of the fourth capacitor C4 and the second end of the nineteenth resistor R19 are grounded.

10. The integrated street lamp system of MPPT type solar dual-path charging and discharging light source according to claim 1, It is characterized in that The driving circuit includes a third resistor R3, a twenty-fifth resistor R25, a fifth transistor Q5 and a tenth transistor Q10; The first end of the third resistor R3 is electrically connected to the first driving end of the single chip microcomputer U2 and the base of the triode Q10, the second end of the third resistor R3 and the emitter of the triode Q10 are grounded, and the collector of the triode Q10 is electrically connected to the LED lamp group; A first end of the twenty-fifth resistor R25 is electrically connected to a first driving end of the single chip computer U2 and a base of the fifth transistor Q5; The second end of the twenty-fifth resistor R25 and the emitter of the fifth transistor Q5 are grounded, and the collector of the fifth transistor Q5 is electrically connected to the LED lamp group.

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