Photovoltaic inverter and photovoltaic energy storage device based on the inverter

Abstract

The present invention discloses a photovoltaic inverter and a photovoltaic energy storage device based on the inverter, and relates to the field of photovoltaic inverter energy storage, including a photovoltaic energy storage box and a photovoltaic inverter body installed on the photovoltaic energy storage box, wherein the two ends of the photovoltaic inverter body are respectively provided with mutually connected heat dissipation outlets and heat dissipation inlets, and the photovoltaic inverter body is embedded with a metal heat absorbing plate located on both sides of the heat dissipation outlet and the heat dissipation inlet, wherein the metal heat absorbing plate is protrudingly arranged at the top of the photovoltaic energy storage box, and an equipment installation groove is provided at the top of the metal heat absorbing plate, and a heat dissipation fan is fixedly installed on the inner wall of the equipment installation groove. The heat dissipation fan of the present invention puts the top of the photovoltaic inverter body in a state of fast airflow and generates the Bernoulli principle, and the external air enters from the heat dissipation inlet and is discharged along the heat dissipation outlet, and the air dissipates heat in the process of flowing inside the inverter, thereby improving the heat dissipation effect of the photovoltaic inverter body.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic inverter energy storage, in particular to a photovoltaic inverter and a photovoltaic energy storage device based on the inverter. Background Art

[0002] Clean energy and renewable energy have become the key development areas of countries around the world. Among them, photovoltaic power generation technology has been increasingly valued and welcomed by people because of its advantages such as green, environmentally friendly and renewable. In photovoltaic power generation technology, the inverter used to convert the DC power generated by photovoltaic modules into AC power is the key component of the entire photovoltaic power generation technology.

[0003] For example, the Chinese utility model patent with authorization announcement number CN218587509U discloses a safe and reliable photovoltaic inverter box and photovoltaic inverter. This application includes a photovoltaic inverter box body, the inner surface of which is mounted with a photovoltaic inverter body, the side wall of which is provided with heat dissipation holes, the side wall of which is provided with a heat dissipation device, the heat dissipation device including a fan, the fan is slidably connected to the side wall of the photovoltaic inverter box body, the arc surface of the fan is fixedly connected with two support rods, the ends of the two support rods away from the fan are fixedly connected with photovoltaic panels, and the photovoltaic panels are electrically connected with connecting wires on the side close to the support rods.

[0004] There are many heat-generating devices in the photovoltaic inverter circuit. How to reduce the heat generation of the photovoltaic inverter and improve the heat dissipation efficiency has always been a difficult problem in the design of photovoltaic inverters. Current photovoltaic inverter products pursue higher energy density, while requiring the inverter to be smaller and lighter. Under this condition, higher requirements are placed on the design of the heat dissipation device. In order to achieve more efficient heat dissipation, existing heat dissipation devices usually increase the size of the radiator to increase the heat dissipation area, or increase the space inside the inverter to speed up the heat dissipation, and use higher-performance fans to solve the heat dissipation problem. However, the heat dissipation devices in the above methods block the airflow of the equipment in the photovoltaic inverter, which will increase the size and cost of the product, and cause installation difficulties. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a photovoltaic inverter and a photovoltaic energy storage device based on the inverter to solve the technical problem that the existing heat dissipation device will increase the size and cost of the product in order to achieve more efficient heat dissipation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a photovoltaic inverter and a photovoltaic energy storage device based on the inverter, comprising a photovoltaic energy storage box and a photovoltaic inverter body installed on the photovoltaic energy storage box, wherein the two ends of the photovoltaic inverter body are respectively provided with mutually connected heat dissipation outlets and heat dissipation inlets, and the photovoltaic inverter body is embedded with and fixed with metal heat absorbing plates located on both sides of the heat dissipation outlet and the heat dissipation inlet, the metal heat absorbing plates are protrudingly arranged at the top of the photovoltaic energy storage box, and the top of the metal heat absorbing plates is provided with an equipment installation groove, and the inner wall of the equipment installation groove is fixedly installed with a heat dissipation fan, and when the photovoltaic inverter box is placed outdoors by using the externally installed fan, the high temperature in summer will affect the heat dissipation effect of the photovoltaic inverter inside the photovoltaic inverter box, thereby affecting the safety of the photovoltaic inverter.

[0007] By respectively arranging heat dissipation air inlet and heat dissipation air outlet at both ends of the photovoltaic inverter body, metal heat absorbing plates located on both sides of the inner wall of the heat dissipation air inlet and the heat dissipation air outlet are embedded and fixed in the photovoltaic inverter body, the metal heat absorbing plates are in contact with the heating device in the photovoltaic inverter body to absorb heat, and the heat dissipation fan on the top of the metal heat absorbing plates allows air to dissipate the heat, and at the same time, the heat dissipation fan puts the top of the photovoltaic inverter body in a state of fast airflow and generates the Bernoulli principle, so that the external air enters from the heat dissipation air inlet and is discharged along the heat dissipation air outlet. The air is Heat is dissipated during the flow inside the inverter, which improves the heat dissipation effect of the photovoltaic inverter body; by respectively arranging photovoltaic input terminals and photovoltaic AC power output terminals on the photovoltaic inverter body, the electric energy generated by the photovoltaic equipment is transmitted to the photovoltaic inverter body along the photovoltaic input terminals, and the photovoltaic inverter body is transmitted to the power grid according to the power demand. When the power grid is not short of electricity, it is transmitted to the photovoltaic energy storage box along the DC transmission module for storage, which is convenient for storing electric energy. At the same time, the air circulation groove and the energy storage equipment heat dissipation box improve the heat dissipation effect of the photovoltaic energy storage box.

[0008] The present invention is further configured such that a device mounting plate is fixedly mounted on the photovoltaic inverter body, and a side wall of the device mounting plate is provided with a plurality of fastening bolts threadedly inserted into the photovoltaic energy storage box.

[0009] The present invention is further configured such that a photovoltaic power transmission control panel is provided at the center of the side wall of the photovoltaic inverter body, and an equipment inspection cover for sealing the detection port is installed on the photovoltaic inverter body, wherein knobs are symmetrically provided on the photovoltaic inverter body.

[0010] The present invention is further configured such that a plurality of photovoltaic input terminals are installed at the center of the bottom end surface of the photovoltaic inverter body, and a control data collector interface and a photovoltaic AC power output terminal are respectively provided on both sides of the bottom end surface of the photovoltaic inverter body.

[0011] The present invention is further configured such that the plurality of photovoltaic input terminals are respectively connected to the plurality of photovoltaic power generation panels, and the side wall of the photovoltaic energy storage box is installed with a DC connection module connected to the photovoltaic inverter body.

[0012] The present invention is further configured such that a heat dissipation box for energy storage equipment is fixedly mounted on the side wall of the photovoltaic energy storage box, and heat dissipation modules connected to the interior of the photovoltaic energy storage box are embedded at both ends of the heat dissipation box for energy storage equipment.

[0013] The present invention is further configured such that a sealed inspection door is hingedly installed on the side wall of the photovoltaic energy storage box, and a plurality of air outlets are provided at the bottom end of the sealed inspection door.

[0014] The present invention is further configured such that a plurality of energy storage batteries are embedded in the energy storage box body, the DC connection module is respectively connected to the plurality of energy storage batteries, and the photovoltaic AC power output terminal transmits power to the energy storage battery through a rectifier module.

[0015] The present invention is further configured such that a load-bearing support seat is fixedly connected to the bottom end of the energy storage box body, and air circulation grooves are equidistantly provided on the side walls of the load-bearing support seat.

[0016] The present invention is further configured such that a plurality of ventilation mesh openings are provided at the bottom end of the energy storage box body, and a ventilation hole connected to the ventilation mesh openings is provided on the top wall of the air circulation groove.

[0017] In summary, the present invention mainly has the following beneficial effects: the present invention provides heat dissipation air inlet and heat dissipation air outlet at both ends of the photovoltaic inverter body, and metal heat absorbing plates located on both sides of the inner wall of the heat dissipation air inlet and the heat dissipation air outlet are embedded and fixed in the photovoltaic inverter body, the metal heat absorbing plates are in contact with the heating device in the photovoltaic inverter body to absorb heat, and the heat dissipation fan on the top of the metal heat absorbing plates allows air to dissipate the heat, and at the same time, the heat dissipation fan puts the top of the photovoltaic inverter body in a state of fast airflow and generates the Bernoulli principle, so that the external air enters from the heat dissipation air inlet and flows along the The heat is discharged through the heat dissipation outlet, and the air dissipates heat in the process of flowing inside the inverter, which improves the heat dissipation effect of the photovoltaic inverter body; by respectively arranging photovoltaic input terminals and photovoltaic AC power output terminals on the photovoltaic inverter body, the electric energy generated by the photovoltaic equipment is transmitted to the photovoltaic inverter body along the photovoltaic input terminals, and the photovoltaic inverter body is transmitted to the power grid according to the power demand. When the power grid is not short of electricity, the electric energy is transmitted to the photovoltaic energy storage box along the DC transmission module for storage, which is convenient for storing electric energy. At the same time, the air circulation slot and the heat dissipation box of the energy storage device improve the heat dissipation effect of the photovoltaic energy storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the photovoltaic inverter body of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the photovoltaic inverter body from another angle of the present invention;

[0020] Figure 3 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 5 It is a structural schematic diagram of the photovoltaic energy storage box of the present invention;

[0023] Figure 6 It is a schematic diagram of the bottom structure of the photovoltaic energy storage box of the present invention.

[0024] In the figure: 1. Photovoltaic inverter body; 2. Photovoltaic power transmission control panel; 3. Equipment maintenance cover; 4. Knob; 5. Fastening bolts; 6. Equipment mounting plate; 7. Metal heat absorbing plate; 8. Photovoltaic AC power output terminal; 9. Heat dissipation outlet; 10. Heat dissipation fan; 11. Equipment mounting slot; 12. Control data collector interface; 13. Photovoltaic input terminal; 14. Heat dissipation inlet; 15. Sealed maintenance door; 16. Photovoltaic energy storage box; 17. Heat dissipation module; 18. Energy storage equipment heat dissipation box; 19. Air circulation slot; 20. Load-bearing support seat; 21. DC connection module; 22. Air outlet mesh port; 23. Ventilation mesh port. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] A photovoltaic inverter and a photovoltaic energy storage device based on the inverter, such as Figure 1-6 As shown, it includes a photovoltaic energy storage box 16 and a photovoltaic inverter body 1 installed on the photovoltaic energy storage box 16, and the two ends of the photovoltaic inverter body 1 are respectively provided with a heat dissipation outlet 9 and a heat dissipation inlet 14 that are interconnected, and the photovoltaic inverter body 1 is embedded with a metal heat absorption plate 7 located on both sides of the heat dissipation outlet 9 and the heat dissipation inlet 14. The metal heat absorption plate 7 is protrudingly arranged at the top of the photovoltaic energy storage box 16, and an equipment installation groove 11 is opened at the top of the metal heat absorption plate 7, and a heat dissipation fan 10 is fixedly installed on the inner wall of the equipment installation groove 11.

[0027] A device mounting plate 6 is fixedly mounted on the photovoltaic inverter body 1, and a plurality of fastening bolts 5 threadedly inserted into the photovoltaic energy storage box 16 are arranged on the side wall of the device mounting plate 6, a photovoltaic power transmission control panel 2 is arranged at the center of the side wall of the photovoltaic inverter body 1, and a device inspection cover 3 for sealing the detection port is installed on the photovoltaic inverter body 1, wherein knobs 4 are symmetrically arranged on the photovoltaic inverter body 1, a plurality of photovoltaic input terminals 13 are installed at the center of the bottom end surface of the photovoltaic inverter body 1, and a control data collector interface 12 and a photovoltaic AC power output terminal 8 are respectively arranged on both sides of the bottom end surface of the photovoltaic inverter body 1, and the plurality of photovoltaic input terminals 13 are respectively connected to a plurality of photovoltaic power generation panels, A DC connection module 21 connected to the photovoltaic inverter body 1 is installed on the side wall of the photovoltaic energy storage box 16. A metal heat absorbing plate 7 located on both sides of the inner wall of the heat dissipation air inlet 14 and the heat dissipation air outlet 9 is embedded and fixed in the photovoltaic inverter body 1. The metal heat absorbing plate 7 contacts the heating device in the photovoltaic inverter body 1 to absorb heat. The heat dissipation fan 10 on the top of the metal heat absorbing plate 7 allows the air to dissipate heat therefrom. At the same time, the heat dissipation fan 10 puts the top of the photovoltaic inverter body 1 in a state of fast airflow and generates the Bernoulli principle, so that the external air enters from the heat dissipation air inlet 14 and is discharged along the heat dissipation air outlet 9. The air dissipates heat in the process of flowing inside the inverter, thereby improving the heat dissipation effect of the photovoltaic inverter body 1.

[0028] Furthermore, a heat dissipation box 18 for energy storage equipment is fixedly installed on the side wall of the photovoltaic energy storage box 16, and heat dissipation modules 17 connected to the inside of the photovoltaic energy storage box 16 are embedded at both ends of the heat dissipation box 18. A sealed inspection door 15 is hingedly installed on the side wall of the photovoltaic energy storage box 16, and a plurality of air outlets 22 are provided at the bottom end of the sealed inspection door 15. A plurality of energy storage batteries are embedded in the main body of the energy storage box, and the DC connection modules 21 are respectively connected to the plurality of energy storage batteries. The photovoltaic AC power output terminal 8 transmits power to the energy storage battery through the rectifier module, and the energy storage A load-bearing support seat 20 is fixedly connected to the bottom end of the box body, and air circulation grooves 19 are equidistantly provided on the side walls of the load-bearing support seat 20. A plurality of ventilation mesh openings 23 are provided at the bottom end of the energy storage box body, and ventilation holes connected to the ventilation mesh openings 23 are provided on the top wall of the air circulation grooves 19. The electric energy generated by the photovoltaic equipment is transmitted to the photovoltaic inverter body 1 along the photovoltaic input terminal 13, and the photovoltaic inverter body 1 is transmitted to the power grid according to the power demand. When the power grid is not short of electricity, the electric energy is transmitted to the photovoltaic energy storage box 16 along the DC transmission module for storage, so as to facilitate the storage of electric energy.

[0029] The working principle of the present invention is as follows: the photovoltaic inverter body 1 is arranged on the side wall of the photovoltaic energy storage box 16, and the multiple threads on the equipment mounting plate 6 are inserted into the photovoltaic energy storage box 16, so that the photovoltaic inverter body 1 is fixed on the side wall of the photovoltaic energy storage box 16, and at the same time, the electric energy generated by the photovoltaic power generation equipment is transmitted to the photovoltaic input terminal 13 through the wire, and the photovoltaic inverter body 1 is transmitted to the power grid according to the power demand. When the power grid is not short of electricity, the electric energy is transmitted to the photovoltaic energy storage box 16 along the DC transmission module for storage, which is convenient for storing electric energy, and the heat dissipation fan 10 at the top of the photovoltaic inverter body 1 is started. The photovoltaic inverter body 1 is embedded with a metal heat absorbing plate 7 located on both sides of the inner wall of the heat dissipation air inlet 14 and the heat dissipation air outlet 9. The metal heat absorbing plate 7 contacts with the heating device in the photovoltaic inverter body 1 to absorb heat, and the heat dissipation fan 10 at the top of the metal heat absorbing plate 7 makes the air The heat dissipation fan 10 puts the top of the photovoltaic inverter body 1 in a state of fast airflow and generates the Bernoulli principle, so that the external air enters from the heat dissipation air inlet 14 and is discharged along the heat dissipation air outlet 9. The air dissipates heat in the process of flowing inside the inverter, thereby improving the heat dissipation effect of the photovoltaic inverter body 1. A heat dissipation module 17 is provided in the energy storage device heat dissipation box 18 on the photovoltaic energy storage box 16. The heat dissipation module 17 generates wind energy to transport air to the photovoltaic energy storage box 16, thereby dissipating the energy storage battery in the photovoltaic energy storage box 16. The air after the energy storage battery is cooled is discharged along the air outlet mesh 22 and the ventilation mesh 23 respectively. At the same time, the natural wind flowing in the air circulation groove 19 increases the outflow speed of the hot air in the photovoltaic energy storage box 16. The air circulation groove 19 and the energy storage device heat dissipation box 18 improve the heat dissipation effect of the photovoltaic energy storage box 16.

[0030] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter, comprising a photovoltaic energy storage box (16) and a photovoltaic inverter body (1) installed on the photovoltaic energy storage box (16), characterized in that: The photovoltaic inverter body (1) is provided with interconnected heat dissipation outlets (9) and heat dissipation inlets (14) at both ends thereof, and a metal heat absorption plate (7) located on both sides of the heat dissipation outlets (9) and the heat dissipation inlets (14) is embedded and fixed in the photovoltaic inverter body (1), the metal heat absorption plate (7) is protrudingly arranged at the top end of the photovoltaic energy storage box (16), and a device installation groove (11) is provided at the top end of the metal heat absorption plate (7), and a heat dissipation fan (10) is fixedly installed on the inner wall of the device installation groove (11).

2. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 1, characterized in that: A device mounting plate (6) is fixedly mounted on the photovoltaic inverter body (1), and a side wall of the device mounting plate (6) is provided with a plurality of fastening bolts (5) threadedly inserted into the photovoltaic energy storage box (16).

3. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 2, characterized in that: A photovoltaic power transmission control panel (2) is arranged at the center of the side wall of the photovoltaic inverter body (1), and an equipment inspection cover (3) for sealing the detection port is installed on the photovoltaic inverter body (1), wherein knobs (4) are symmetrically arranged on the photovoltaic inverter body (1).

4. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 3, characterized in that: A plurality of photovoltaic input terminals (13) are installed at the center of the bottom end surface of the photovoltaic inverter body (1), and a control data collector interface (12) and a photovoltaic AC power output terminal (8) are respectively provided on both sides of the bottom end surface of the photovoltaic inverter body (1).

5. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 4, characterized in that: The plurality of photovoltaic input terminals (13) are respectively connected to a plurality of photovoltaic power generation panels, and a DC connection module (21) connected to the photovoltaic inverter body (1) is installed on the side wall of the photovoltaic energy storage box (16).

6. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 5, characterized in that: An energy storage device heat dissipation box (18) is fixedly mounted on the side wall of the photovoltaic energy storage box (16), and heat dissipation modules (17) connected to the interior of the photovoltaic energy storage box (16) are embedded at both ends of the energy storage device heat dissipation box (18).

7. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 6, characterized in that: A sealed inspection door (15) is hingedly mounted on the side wall of the photovoltaic energy storage box (16), and a plurality of air outlets (22) are provided at the bottom end of the sealed inspection door (15).

8. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 7, characterized in that: A plurality of energy storage batteries are embedded in the energy storage box body, the DC connection modules (21) are respectively connected to the plurality of energy storage batteries, and the photovoltaic AC power output terminals (8) transmit electric energy to the energy storage batteries via the rectifier module.

9. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 8, characterized in that: The bottom end of the energy storage box body is fixedly connected to a load-bearing support seat (20), and the side wall of the load-bearing support seat (20) is provided with air circulation grooves (19) at equal intervals.

10. A photovoltaic inverter and a photovoltaic energy storage device based on the inverter according to claim 9, characterized in that: The bottom end of the energy storage box body is provided with a plurality of ventilation mesh openings (23), and the top wall of the air circulation slot (19) is provided with ventilation holes connected to the ventilation mesh openings (23).

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