CN212061003U

CN212061003U - MPPT solar controller

Info

Publication number: CN212061003U
Application number: CN202020844149.9U
Authority: CN
Inventors: 邹俊
Original assignee: Shenzhen Hehejin Industrial Co ltd
Current assignee: Shenzhen Hehejin Industrial Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-01
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a MPPT solar controller, which comprises a MPPT controller and a BUCK-BOOST circuit; the MPPT controller is provided with a signal acquisition end which is electrically connected with the solar photovoltaic array to acquire the current value and the voltage value of the solar photovoltaic array; the output end of the MPPT controller is connected with the signal input end of the BUCK-BOOST circuit; the electrical input end of the BUCK-BOOST circuit is electrically connected with the solar photovoltaic array, and the BUCK-BOOST circuit is provided with a load output end. According to the technology, the MPPT controller is used for obtaining the current value and the voltage value of the solar photovoltaic array to calculate the maximum power value and output PWM waves, and the PWM waves are transmitted to the BUCK-BOOST circuit and are controlled by the BUCK-BOOST circuit to be charged and discharged specifically. Therefore, the effect of maximum power supply is realized, and the solar power generation efficiency is improved.

Description

MPPT solar controller

Technical Field

The utility model belongs to the technical field of the solar control technique and specifically relates to a MPPT solar control ware.

Background

In the present day of global energy situation tension, all countries in the world seek new energy replacement strategy to obtain sustainable development and obtain an advantage position in future development. Solar energy is the focus of attention today with its significant advantages of being clean, renewable, safe, etc. In particular to a solar photovoltaic power generation technology, the development is rapid. The photovoltaic power generation technology is mainly divided into two types, namely an independent power generation system and a distributed power generation system. The independent power generation system is mainly oriented to small users or small loads, and is flexible in application and strong in adaptability and is increasingly applied to various fields.

The conventional solar controller realizes the storage of the electric power generated by the solar photovoltaic module in the storage battery according to a rated control mode. However, the voltage and current of the solar photovoltaic module are unstable due to factors such as the direct angle of the sun, and therefore the traditional solar controller cannot supply power to the storage battery according to the maximum power of the solar photovoltaic module.

Therefore, the above technical problem needs to be solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a MPPT solar control ware, aim at realizes that solar PV modules outwards exports according to maximum power, improves the utilization ratio of solar energy.

In order to solve the technical problem, the utility model provides a basic technical scheme does:

an MPPT solar controller comprising:

an MPPT controller and a BUCK-BOOST circuit;

the MPPT controller is provided with a signal acquisition end which is electrically connected with the solar photovoltaic array to acquire the current value and the voltage value of the solar photovoltaic array; the output end of the MPPT controller is connected with the signal input end of the BUCK-BOOST circuit and used for outputting PWM waves to the BUCK-BOOST circuit; the electrical input end of the BUCK-BOOST circuit is used for being electrically connected with the solar photovoltaic array, and the BUCK-BOOST circuit is provided with a load output end.

Furthermore, a capacitor C is connected in parallel between the electrical input ends of the BUCK-BOOST circuit₁。

Further, the MPPT controller is connected with an LCD display screen.

Furthermore, the MPPT controller is respectively connected with a communication module and a USB interface.

Furthermore, the MPPT solar controller also comprises a shell, wherein the shell forms a semi-closed accommodating space, and one side surface of the shell is an open end for realizing the communication between the accommodating space and the outside;

the MPPT controller and the BUCK-BOOST circuit are integrated on a PCB, and one end of the PCB is fixedly connected to a partition plate;

in an assembled state, the PCB is accommodated in the accommodating space, and the partition plate is detachably and hermetically connected at the open end of the shell.

Further, the open end has a pedestal portion disposed along a periphery of the open end, and the partition plate is in sealing contact with the pedestal portion in the assembled state.

Furthermore, two grooves which are oppositely arranged are formed in the outer side of the shell, which is positioned on the tray part, along the inner side surface of the shell; the partition plate is provided with two extending parts which are perpendicular to the partition plate, the two extending parts are positioned on two opposite sides of the partition plate, the outer side surface of each extending part is provided with a convex strip, and the convex strips of the two extending parts are correspondingly buckled with the two grooves in an assembling state.

Further, one of the extensions has an unlocking portion extending to the outside of the housing in the assembled state.

Furthermore, at least one plane of the shell is detachably connected with the radiating fins.

The utility model has the advantages that:

the technical scheme of the utility model provides an MPPT solar controller, which comprises an MPPT controller and a BUCK-BOOST circuit; an MPPT controller and a BUCK-BOOST circuit; the MPPT controller is provided with a signal acquisition end which is electrically connected with the solar photovoltaic array to acquire the current value and the voltage value of the solar photovoltaic array; the output end of the MPPT controller is connected with the signal input end of the BUCK-BOOST circuit and used for outputting PWM waves to the BUCK-BOOST circuit; the electrical input end of the BUCK-BOOST circuit is used for being electrically connected with the solar photovoltaic array, and the BUCK-BOOST circuit is provided with a load output end. According to the technology, the MPPT controller is used for obtaining the current value and the voltage value of the solar photovoltaic array to calculate the maximum power value and transmitting the corresponding PWM wave to the BUCK-BOOST circuit, and the BUCK-BOOST circuit controls specific charging and discharging, so that the effect of maximum power supply is achieved, and the solar power generation efficiency is improved.

Drawings

Fig. 1 is a schematic circuit connection diagram of an MPPT solar controller according to the present invention;

FIG. 2 is a schematic diagram of an MPPT solar controller;

FIG. 3 is a schematic structural view of the PCB and the housing in a non-closed state;

fig. 4 is a schematic view of an assembly structure of the PCB board, the partition board and the housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 4, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the embodiments of the present invention, the directions are shown in the attached drawings. If a particular gesture changes, the directional indication changes accordingly.

Referring to fig. 1, the present embodiment provides an MPPT solar controller, which includes an MPPT controller 2 and a BUCK-BOOST circuit 3; the MPPT controller 2 is provided with a signal acquisition end which is electrically connected with the solar photovoltaic array to acquire the current value and the voltage value of the solar photovoltaic array; the output end of the MPPT controller 2 is connected with the signal input end of the BUCK-BOOST circuit 3 and used for outputting PWM waves to the BUCK-BOOST circuit 3; the electrical input end of the BUCK-BOOST circuit 3 is used for electrical connection with the solar photovoltaic array, and the BUCK-BOOST circuit 3 has a load output end.

When the MPPT controller works specifically, the signal acquisition ends of the MPPT controller 2 are respectively connected to the solar photovoltaic array to acquire electricity of the solar photovoltaic arrayPressure value V_PVSum current value I_PVAnd calculating the solar photovoltaic array at V_PVSum current value I_PVThen outputs a corresponding control signal, outputs the output control signal in the form of PWM wave and transmits the control signal to the BUCK-BOOST circuit 3; the BUCK-BOOST circuit 3 supplies power to the load end according to the PWM wave. For example, to charge a battery on the load side, or to supply power to a load. It should be noted that, in the present embodiment, the MPPT controller 2 and the BUCK-BOOST circuit 3 may both adopt a technique known in the art. The MPPT circuit is combined with the MPPT control circuit 1 and the BUCK-BOOST circuit 3 to realize charging and discharging control of the solar photovoltaic module, and the power generation efficiency of the solar photovoltaic module is improved. In some embodiments, the MPPT controller 2 may be implemented using an MSP430 chip, which outputs PWM waves to the BUCK-BOOST circuit 3.

In order to filter noise wave of electric power output by the solar photovoltaic module, a capacitor C is connected in parallel between the electric input ends of the BUCK-BOOST circuit 3₁。

In order to display the working state of the MPPT solar controller, in this embodiment, the MPPT controller 2 is connected to an LCD display 4.

In order to enable communication connection with external devices, in some embodiments, a communication module 5 is connected to the MPPT controller 2. The communication module 5 is used for realizing communication with external equipment. For example, the intelligent terminal can transmit information to each other and transmit the working data of the MPPT solar controller to the intelligent terminal, and the intelligent terminal can transmit control information to the MPPT solar controller. Of course, according to different reference occasions, the communication module 5 may adopt different forms of communication devices, such as a 4G communication module or a 5G communication module, or a bluetooth communication module or a Zigbee communication module.

In order to improve the function of the MPPT solar controller, in other embodiments, a USB interface 6 is connected to the MPPT controller 2. The USB interface 6 is used for outputting direct current to the outside for charging the electronic equipment. For example, charging with a mobile phone is realized through the USB interface 6.

In a word, in the technical scheme, the maximum power output of the solar photovoltaic module is realized through the MPPT controller 2 and the BUCK-BOOST circuit 3.

In other embodiments, the MPPT solar controller further includes a housing 1, the housing 1 forms a semi-closed receiving space 11, and a side surface of the housing 1 is an open end 12 for communicating the receiving space 11 with the outside; the MPPT controller 2 and the BUCK-BOOST circuit 3 are integrated on a PCB7, and one end of the PCB7 is fixedly connected to a partition plate 8; in the assembled state, the PCB board 7 is received in the receiving space 11, and the partition 8 is detachably and sealingly connected at the open end 12 of the housing 1. Namely, the MPPT solar controller can be quickly mounted and dismounted through the embodiment. In particular, the housing 11 is a semi-closed structure having only one port communicating with the outside, i.e. communicating with the outside only through the open end 12. For example, when the housing 11 is provided in a cubic structure, only one of six faces of the housing 11 is open. When assembling, the PCB board 7 is inserted into the receiving space 11 along the open opening 12, and then the partition 8 is connected at the open opening 12. When the PCB needs to be disassembled, the clapboard 8 is unscrewed and then is disassembled together with the PCB 7. Through the scheme, the fast assembly and fast disassembly of the MPPT solar controller are realized. It should be understood that, in the present embodiment, all the sockets of the MPPT controller 2 are disposed at one side of the partition 8, and all the sockets are directed to the outside through the corresponding slots on the partition 8.

Meanwhile, it should be understood that the partition plate 8 and the PCB7 may be fixed into a single structure or may be separated. When the integrated structure is adopted, the partition plate 8 and the PCB board 7 can be screwed together by screws. When a split configuration is used, i.e. there is no connection between the partition 8 and the PCB 7; when the assembly is needed, the partition plate 8 is sleeved on the PCB7, so that each outward plug-in port on the PCB7 is exposed at the partition plate 8, then the PCB7 is inserted into the accommodating space 11, the partition plate 8 and the open end 12 of the shell 1 are detachably connected together, and after the assembly, the PCB7 is pushed by the partition plate 8 to be stably sleeved in the accommodating space 11 of the shell 1.

In order to facilitate the fixed connection of the diaphragm 8, the open end 12 has a pedestal portion 121 arranged along the periphery of the open end, with the diaphragm 8 being in sealing contact with the pedestal portion 121 in the assembled state. I.e. the position into which the partition 8 enters is defined by said tray portion 121 and a stable detachable connection of the partition 8 to the housing 1 can be ensured. In order to ensure the sealing property of the inside and prevent moisture and the like from entering the housing space 11, a seal ring is provided at a joint portion where the saddle portion 121 and the partition plate 8 are in contact.

It will be appreciated that the removable connection of the partition 8 to the housing 1 may be achieved using a number of well known techniques, for example by a screw or snap connection.

Specifically, in some embodiments, the outer side of the housing 1 on the tray portion 121 is provided with two oppositely arranged grooves 13 along the inner side of the housing 1; the partition plate 8 has two extending portions 81 arranged perpendicular to the partition plate 8, the two extending portions 81 are located at two opposite sides of the partition plate 8, the outer side surface of each extending portion 81 is provided with a convex strip 811, and the convex strips 811 of the two extending portions 81 are correspondingly buckled with the two grooves 13 in an assembling state. Namely, the detachable connection of the partition plate 8 and the shell 1 is realized through the clamping matching of the convex strips 811 and the grooves 13. During the specific assembly, the partition 8 is inserted into the receiving space 11 along the open opening 12 until the protrusion 811 falls into the groove 13.

Furthermore, in order to ensure easy removal of the partition 8, one of the extensions 81 has an unlocking portion 812 which extends to the outside of the housing 1 in the assembled state. The unlocking portion 812 is formed as a single body with the extending portion 81, and the unlocking portion 812 extends to the outside of the housing 1 in the assembled state, so that the unlocking portion 812 is pulled outward by force to disengage the protruding strip 811 from the groove 13 in use, thereby realizing the detachment of the partition plate 8.

In other embodiments, in order to ensure the heat dissipation of the MPPT solar controller, at least one plane of the housing 1 is detachably connected with a heat dissipation fin (not shown). Specifically, the heat dissipating fin is detachable and has a surface having the same shape as the outer surface of the housing 1, and the heat dissipating fin is brought into close contact with and fixed to the surface of the housing 1 when assembled. Specifically, the heat dissipation fins can be fixed by screws.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. An MPPT solar controller, comprising:

an MPPT controller (2) and a BUCK-BOOST circuit (3);

the MPPT controller (2) is provided with a signal acquisition end which is electrically connected with the solar photovoltaic array to acquire the current value and the voltage value of the solar photovoltaic array; the output end of the MPPT controller (2) is connected with the signal input end of the BUCK-BOOST circuit (3) and used for outputting PWM waves to the BUCK-BOOST circuit (3); the electrical input end of the BUCK-BOOST circuit (3) is used for being electrically connected with the solar photovoltaic array, and the BUCK-BOOST circuit (3) is provided with a load output end.

2. The MPPT solar controller of claim 1, wherein:

a capacitor C is connected in parallel between the electrical input ends of the BUCK-BOOST circuit (3)₁。

3. The MPPT solar controller of claim 1, wherein:

the MPPT controller (2) is connected with an LCD display screen (4).

4. The MPPT solar controller of claim 1, wherein:

the MPPT controller (2) is connected with a communication module (5) and a USB interface (6) respectively.

5. The MPPT solar controller of claim 1, wherein:

the MPPT solar controller further comprises a shell (1), wherein the shell (1) forms a semi-closed accommodating space (11), and one side surface of the shell (1) is an open end (12) for communicating the accommodating space (11) with the outside;

the MPPT controller (2) and the BUCK-BOOST circuit (3) are integrated on a PCB (7), and one end of the PCB (7) is fixedly connected to a partition plate (8);

in the assembled state, the PCB (7) is accommodated in the accommodating space (11), and the partition (8) is detachably and hermetically connected at the open end (12) of the housing (1).

6. The MPPT solar controller of claim 5, wherein:

the open end (12) has a support part (121) arranged along the periphery of the open end, and the partition (8) is in sealing contact with the support part (121) in the assembled state.

7. The MPPT solar controller of claim 6, wherein:

two grooves (13) which are oppositely arranged are formed in the outer side of the shell (1) on the support part (121) along the inner side surface of the shell (1); the partition plate (8) is provided with two extending parts (81) which are vertically arranged with the partition plate (8), the two extending parts (81) are positioned at two opposite sides of the partition plate (8), the outer side surface of each extending part (81) is provided with a convex strip (811), and the convex strips (811) of the two extending parts (81) are correspondingly buckled with the two grooves (13) in an assembling state.

8. The MPPT solar controller of claim 7, wherein:

one of the extensions (81) has an unlocking part (812) which extends to the outside of the housing (1) in the assembled state.

9. The MPPT solar controller of claim 5, wherein:

at least one plane of the shell (1) is detachably connected with the radiating fins.