CN219351513U

CN219351513U - Photovoltaic micro inverter device

Info

Publication number: CN219351513U
Application number: CN202320356659.5U
Authority: CN
Inventors: 胡垚; 朱浩成
Original assignee: Shenzhen Xinxian Semiconductor Co ltd
Current assignee: Shenzhen Xinxian Semiconductor Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-07-14
Anticipated expiration: 2033-03-01

Abstract

The utility model relates to the technical field of inverters, in particular to a photovoltaic micro-inverter device, which comprises a shell, wherein the inside of the shell is connected with a photovoltaic micro-inverter integrated circuit board module in a buckling manner, the top of the photovoltaic micro-inverter integrated circuit board module is covered with a heat conducting frame, the bottom of the heat conducting frame is fixed on the photovoltaic micro-inverter integrated circuit board module, the top of the heat conducting frame is fixedly connected with a base in a fitting manner, and the inner side of the base is clamped at the bottom of the shell; or under rainy and humid climatic conditions, the immersion of water vapor can cause short circuit damage of internal devices of the inverter and can cause the problem that the inverter cannot work.

Description

Photovoltaic micro inverter device

Technical Field

The utility model relates to the technical field of inverters, in particular to a photovoltaic micro-inverter device.

Background

The photovoltaic micro inverter is an inverter for a solar photovoltaic power generation system, is called micro-inversion for short, and has the characteristics of small volume, convenient installation, independent MPPT, high power generation efficiency and the like, and is widely applied.

Because the photovoltaic micro-inverter is directly arranged on the solar panel mounting frame and is exposed outside, with the increasing aggravation of global warming and Ranna phenomena in recent years, the extremely cold and extremely hot conditions are also aggravated, and the temperature control capability and the waterproof capability of the existing photovoltaic micro-inverter are poor, when the photovoltaic micro-inverter is used for a long time in severe environments such as outdoor extremely cold, extremely hot or rainy and moist, the damage of the inverter is caused by the high-temperature environment or the low-temperature environment, so that the power cannot be generated; or under rainy and humid climatic conditions, the short circuit damage of the internal devices of the inverter can be caused by the immersion of rainwater, and the inverter can be disabled.

Disclosure of Invention

The utility model aims to provide a photovoltaic micro-inverter device, which aims to solve the problems that the existing photovoltaic micro-inverter is poor in temperature control capability and waterproof capability, and the inverter is damaged due to high-temperature environment or low-temperature environment when the photovoltaic micro-inverter device is used for a long time in severe environments such as outdoor extremely cold, extremely hot or rainy and humid environments, so that power cannot be generated; or under rainy and humid climatic conditions, the immersion of water vapor can cause short circuit damage of internal devices of the inverter and can cause the problem that the inverter cannot work.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a miniature dc-to-ac converter device of photovoltaic, includes the casing, the inside buckle of casing is connected with the miniature dc-to-ac converter integrated circuit board module of photovoltaic, the top of miniature dc-to-ac converter integrated circuit board module of photovoltaic is covered with the heat conduction frame, the bottom of heat conduction frame is fixed in on the miniature dc-to-ac converter integrated circuit board module of photovoltaic, the top laminating fixedly connected with base of heat conduction frame, the inboard joint of base is in the bottom of casing, and joint department has cup jointed the sealing washer, the mounting bracket of front end fixedly connected with of base, the mounting groove has been seted up to the front end equidistance of mounting bracket, mounting bracket and base are made for aluminum alloy material, the inner wall of casing has pasted graphene electric heating piece, graphene electric heating piece and miniature dc-to-ac converter integrated circuit board module electric connection.

Preferably, a connecting tail wire is integrated in the middle of the rear end of the photovoltaic micro-inverter integrated circuit board module, and the connecting tail wire consists of two solar panel DC input wires, an inverter AC output wire and a grounding wire.

Preferably, the surface of the connecting tail wire is sleeved with a sealing joint, the inner end of the sealing joint is connected to the heat conducting frame in a threaded manner, the outer end of the sealing joint is clamped in a reserved hole on the surface of the shell, and the joint is subjected to sealing treatment.

Preferably, the photovoltaic micro-inverter integrated circuit board module is respectively integrated with a temperature sensor and a humidity sensor.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the heat conducting frame is additionally arranged on the photovoltaic micro-inverter integrated circuit board module, so that on one hand, heat generated by the photovoltaic micro-inverter integrated circuit board module can be rapidly absorbed and conducted outwards, and the heat is conducted to the solar panel mounting frame through the aluminum alloy material base and the mounting frame, so that wide-area heat dissipation is performed, and further the heat dissipation effect is improved.

Drawings

Fig. 1 is an axial view of the overall structure of a photovoltaic micro-inverter apparatus of the present utility model;

fig. 2 is a view showing an internal structure of a housing of the photovoltaic micro inverter apparatus of the present utility model;

fig. 3 is a structural exploded view of a photovoltaic micro-inverter apparatus of the present utility model;

fig. 4 is a view showing a state of installation of a photovoltaic micro-inverter of the photovoltaic micro-inverter apparatus of the present utility model.

In the figure: 1. a housing; 2. a photovoltaic micro inverter integrated circuit board module; 3. a heat conduction frame; 4. a base; 5. a seal ring; 6. a bolt; 7. a mounting frame; 8. a mounting groove; 9. graphene electric heating sheets; 10. connecting tail wires; 11. sealing the joint; 12. a solar panel mounting rack; 13. and (5) installing a bolt.

Description of the embodiments

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.

Referring to fig. 1-4, the present utility model provides a technical solution:

the photovoltaic micro-inverter device comprises a shell 1, wherein the protection of an integrated circuit board module 2 and other elements of the internal photovoltaic micro-inverter is realized; the inside buckle of the shell 1 is connected with a photovoltaic micro inverter integrated circuit board module 2, which is used for converting current of a photovoltaic power generation system and meets the use requirement of the photovoltaic micro inverter; the top of the photovoltaic micro-inverter integrated circuit board module 2 is covered with the heat conduction frame 3, and the bottom of the heat conduction frame 3 is fixed on the photovoltaic micro-inverter integrated circuit board module 2, so that the heat conduction is realized while the integrated electronic elements inside the photovoltaic micro-inverter integrated circuit board module 2 are protected, and the temperature control condition of the internal environment is convenient; the top of the heat conduction frame 3 is fixedly connected with a base 4 in a fitting mode, the inner side of the base 4 is clamped at the bottom of the shell 1, a sealing ring 5 is sleeved at the clamping position, the base 4 and the photovoltaic micro inverter integrated circuit board module 2 are fixedly connected with the shell 1 through bolts 6, the shell 1 is sealed by the base 4, and the sealing performance and the waterproof effect of the photovoltaic micro inverter integrated circuit board module are further improved by means of the sealing ring 5; the front end fixedly connected with mounting bracket 7 of base 4, mounting groove 8 has been seted up to the front end equidistance of mounting bracket 7, do benefit to photovoltaic micro-inverter and solar panel mounting bracket 12 fixed mounting, mounting bracket 7 and base 4 are made for aluminium alloy material, the inner wall of casing 1 is pasted and is had graphite alkene electrical heating piece 9, graphite alkene electrical heating piece 9 and photovoltaic micro-inverter integrated circuit board module 2 electric connection, through adding on photovoltaic micro-inverter integrated circuit board module 2 establishes heat conduction frame 3, on the one hand can absorb the heat that photovoltaic micro-inverter integrated circuit board module 2 produced fast and outwards conduct, and make base 4 and mounting bracket 3 with heat conduction to solar panel mounting bracket 12 by aluminium alloy material, carry out wide area heat dissipation, and then improve its radiating effect (compared with traditional photovoltaic micro-inverter self casing radiating mode is bigger, the radiating effect is better), and through adding in casing 1 establishes graphite alkene heating piece 9, when photovoltaic micro-inverter work in cold or humid environment, accessible graphite alkene heating piece 9 carries out inside heating, satisfy and carry out the gentle stoving function, and then satisfy the condition of carrying out, the photovoltaic inverter is avoided the high temperature condition or the low temperature condition of operation or the photovoltaic inverter can't cause its humid stability condition to occur.

In this embodiment, referring to fig. 2, a connection tail 10 is integrated in the middle of the rear end of the integrated circuit board module 2 of the photovoltaic micro-inverter, so that the photovoltaic micro-inverter is conveniently connected to a photovoltaic power generation system, and the connection tail 10 is composed of two solar panel DC input lines, an inverter AC output line and a ground line, so as to be connected with a solar panel, connected with a grid-connected power supply and grounded.

In this embodiment, referring to fig. 3, a sealing joint 11 is sleeved on the surface of the connection tail wire 10, the inner end of the sealing joint 11 is in threaded connection with the heat conducting frame 3, the outer end of the sealing joint 11 is clamped in a preformed hole on the surface of the housing 1, and the connection part is subjected to sealing treatment, so that connection sealing between the connection tail wire 10 and the housing 1 is realized.

In this embodiment, the photovoltaic micro inverter integrated circuit board module 2 is integrated with a temperature sensor and a humidity sensor respectively, so as to monitor the temperature and humidity of the internal environment of the heat conduction frame 3, and facilitate the adjustment of internal temperature control.

When the photovoltaic micro inverter is used, the mounting bolts 13 are screwed into threaded holes in the solar panel mounting frame 12, then the base 4 is outwards (the wind blowing is convenient, the heat exchange efficiency is guaranteed) matched with the mounting grooves 8 on the mounting frame 7 to be clamped with the mounting bolts 13, then the mounting bolts 13 are screwed, and then the connecting tail wire 10 is connected, as shown in fig. 4.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A photovoltaic micro inverter device, characterized in that: including casing (1), the inside buckle of casing (1) is connected with photovoltaic micro-inverter integrated circuit board module (2), the top of photovoltaic micro-inverter integrated circuit board module (2) is covered with heat conduction frame (3), on the photovoltaic micro-inverter integrated circuit board module (2) was fixed in to the bottom of heat conduction frame (3), the top laminating fixedly connected with base (4) of heat conduction frame (3), the inboard joint of base (4) has cup jointed sealing washer (5) in the bottom of casing (1), and joint department, base (4) and photovoltaic micro-inverter integrated circuit board module (2) all pass through bolt (6) and casing (1) fixed connection, the front end fixedly connected with mounting bracket (7) of base (4), mounting bracket (8) have been seted up to the front end equidistance of mounting bracket (7), mounting bracket (7) and base (4) are aluminium alloy material and make, graphene electric heating piece (9) have been pasted to the inner wall of casing (1), graphene electric heating piece (9) and photovoltaic micro-inverter integrated circuit board module (2).

2. The photovoltaic micro-inverter apparatus of claim 1, wherein: the photovoltaic micro-inverter integrated circuit board module (2) is characterized in that a connecting tail wire (10) is integrated in the middle of the rear end of the photovoltaic micro-inverter integrated circuit board module (2), and the connecting tail wire (10) consists of two solar panel DC input wires, an inverter AC output wire and a grounding wire.

3. A photovoltaic micro-inverter apparatus according to claim 2, characterized in that: the surface of connecting tail wire (10) has cup jointed sealed joint (11), the inner threaded connection of sealed joint (11) is on heat conduction frame (3), the outer end joint of sealed joint (11) is in casing (1) surface preformed hole, and the junction has made sealing treatment.

4. The photovoltaic micro-inverter apparatus of claim 1, wherein: and the photovoltaic micro-inverter integrated circuit board module (2) is respectively integrated with a temperature sensor and a humidity sensor.