A photovoltaic inverter

Abstract

The utility model provides a photovoltaic inverter relates to inverter technical field, including the baffle of fixed installation in the inner side of shell, the inner side fixed mounting of shell has the circuit board body, a plurality of capacitor bodies are fixedly installed to the upper surface of circuit board body, the outer side fixed mounting of capacitor body has the cooling cylinder, the outer side fixed mounting of cooling cylinder has a plurality of heat conduction sheet, the upper surface fixed mounting of baffle has the box body. In the utility model, the cooling of box body is carried out through the refrigeration end of refrigerator, can make the cooling liquid in the box body get the cooling, the cooling liquid in the box body is pumped to the cooling cylinder through water pump and is cooled to the capacitor body, can ensure the stable operation of capacitor body, avoid temperature too high and reduce the service life, cooperate with the air blowing of radiating fan can make the heat exchange of gas and heat conduction sheet, make the air of circuit board body blow, can better carry out the heat dissipation cooling, guarantee the normal use of photovoltaic inverter.

Description

Technical Field

[0001] This utility model belongs to the field of inverter technology, and more specifically, it relates to a photovoltaic inverter. Background Technology

[0002] A photovoltaic (PV) inverter is an inverter that converts the variable DC voltage generated by photovoltaic (PV) solar panels into AC power at the mains frequency. This AC power can be fed back to commercial power transmission systems or supplied to off-grid power grids. The capacitors in the inverter form an oscillating circuit to generate AC power of a certain frequency, filtering out AC power of other frequencies and preventing noise.

[0003] When the actual operating temperature of a capacitor exceeds 55°C, the lifespan of the power capacitor will be reduced by half for every 10% increase. When the actual operating temperature of the capacitor approaches 70°C, the power capacitor will experience thermal breakdown and bulging, ultimately leading to the damage of the power capacitor. Therefore, capacitor heat dissipation devices are of paramount importance.

[0004] Based on the above, the inventors have discovered the following problems: Most existing photovoltaic inverters rely on cooling fans for heat dissipation during use. However, in hot weather, air cooling is insufficient to achieve the desired cooling effect. In particular, the temperature of the capacitors will continue to rise during operation, which can easily lead to overheating and damage. This method cannot effectively dissipate heat from the electronic components used in the photovoltaic inverter, thus reducing its service life.

[0005] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a photovoltaic inverter with greater practical value. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a photovoltaic inverter to solve the current problem of ineffective heat dissipation and cooling during hot seasons.

[0007] The purpose and effect of this photovoltaic inverter are achieved by the following specific technical means: A photovoltaic inverter includes a partition fixedly installed inside a housing. A circuit board body is fixedly installed inside the housing. Multiple capacitor bodies are fixedly installed on the upper surface of the circuit board body. A cooling cylinder is fixedly installed on the outer side of the capacitor bodies. Multiple heat-conducting fins are fixedly installed on the outer side of the cooling cylinder. A housing is fixedly installed on the upper surface of the partition. Multiple coolers are fixedly installed on the outer side of the housing. Multiple slots are opened on the outer side of the housing, and the slots correspond to the positions of the coolers. A water pump is fixedly installed on the right side of the housing. A fixed box is fixedly sleeved on one side of the partition. Multiple cooling fans are fixedly installed inside the fixed box. An air blowing box is fixedly installed at the bottom of the fixed box.

[0008] Furthermore, a temperature detector is fixedly installed on the top of the cooling cylinder, and the temperature detector is set in a one-to-one correspondence with the cooling cylinder.

[0009] Furthermore, the air blowing box has multiple air blowing ports on one side, and the air blowing ports are installed corresponding to the positions of the heat-conducting plates. The heat-conducting plates are fixed at an angle to the outside of the cooling cylinder.

[0010] Furthermore, the output end of the water pump is equipped with a liquid outlet pipe, and a delivery pipe is fixedly installed at one end of the liquid outlet pipe. The delivery pipe is fixedly installed in parallel with the lower outer side of the plurality of cooling cylinders through connecting pipes.

[0011] Furthermore, a return pipe is fixedly installed on the left side of the box, and a collecting pipe is fixedly installed at one end of the return pipe. The collecting pipe and the top of the multiple cooling cylinders are fixedly installed in parallel through connecting pipes.

[0012] Furthermore, an air intake filter window is fixedly installed on the top of the housing, the air intake filter window being positioned corresponding to the cooling fan, and an exhaust window is fixedly installed on one side of the housing.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a cooling fan blows air into the casing to remove heat, thus dissipating heat from the circuit board. Heat exchange is achieved through the heat-conducting fins and cooling cylinder, ensuring heat dissipation of the electronic components inside the casing. This effectively prevents overheating of the electronic components and extends the service life of the photovoltaic inverter.

[0014] In this invention, the cooling end of the cooler cools the housing, thereby cooling the coolant inside the housing. A water pump draws the coolant from the housing into a cooling cylinder to cool the capacitor body, ensuring stable operation of the capacitor body and preventing excessive temperature from reducing its service life. Combined with the air blowing from the cooling fan, the gas can exchange heat with the heat-conducting plates, allowing the cool air blown onto the circuit board to better dissipate heat and ensure the normal operation of the photovoltaic inverter. Attached Figure Description

[0015] Figure 1 This is a complete structural schematic diagram of a photovoltaic inverter according to this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of a photovoltaic inverter according to this utility model.

[0017] Figure 3 This is a partial three-dimensional structural diagram of a photovoltaic inverter according to this utility model.

[0018] Figure 4This is a cross-sectional schematic diagram of the cooling cylinder of a photovoltaic inverter according to this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Outer shell; 2. Air inlet filter window; 3. Slot; 4. Refrigerator; 5. Exhaust window; 6. Partition; 7. Box body; 8. Water pump; 9. Liquid outlet pipe; 10. Liquid delivery pipe; 11. Manifold; 12. Return pipe; 13. Circuit board body; 14. Cooling cylinder; 15. Heat-conducting plate; 16. Fixing box; 17. Air blowing box; 18. Cooling fan; 19. Air blowing port; 20. Capacitor body; 21. Temperature detector. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a photovoltaic inverter, including a partition 6 fixedly installed inside the outer shell 1, a circuit board body 13 fixedly installed inside the outer shell 1, a plurality of capacitor bodies 20 fixedly installed on the upper surface of the circuit board body 13, a cooling cylinder 14 fixedly installed on the outer side of the capacitor body 20, a plurality of heat-conducting plates 15 fixedly installed on the outer side of the cooling cylinder 14, a box 7 fixedly installed on the upper surface of the partition 6, a plurality of coolers 4 fixedly installed on the outer side of the box 7, a plurality of slots 3 opened on the outer side of the outer shell 1, the slots 3 corresponding to the positions of the coolers 4, a water pump 8 fixedly installed on the right side of the box 7, a fixed box 16 fixedly sleeved on one side of the partition 6, a plurality of cooling fans 18 fixedly installed inside the fixed box 16, and an air blowing box 17 fixedly installed at the bottom of the fixed box 16.

[0025] By setting up a cooling cylinder 14, a heat-conducting plate 15, a cooler 4, and a housing 7, the cooling end of the cooler 4 can be used to cool the housing 7, thus cooling the coolant inside the housing 7. The coolant inside the housing 7 is pumped into the cooling cylinder 14 by the water pump 8 to cool the capacitor body 20, ensuring the stable operation of the capacitor body 20 and preventing excessive temperature from reducing its service life. The air blown by the cooling fan 18 allows the gas to exchange heat with the heat-conducting plate 15, so that the cool air blown onto the circuit board body 13 can better dissipate heat and cool down.

[0026] Temperature detectors 21 are fixedly installed on the top of the cooling cylinder 14, and the temperature detectors 21 are set one-to-one with the cooling cylinder 14.

[0027] By setting a temperature detector 21, the temperature of the capacitor body 20 inside the cooling cylinder 14 can be monitored in real time. When the temperature exceeds the preset threshold, the temperature detector 21 transmits a signal to the controller. The controller controls the cooler 4 to start cooling the box 7 and controls the water pump 8 to pump the coolant from the box 7 and deliver it to the cooling cylinder 14 to cool the capacitor body 20, thus ensuring the stable operation of the capacitor body 20.

[0028] The blowing box 17 has multiple blowing ports 19 on one side, and the blowing ports 19 are installed in a corresponding position to the heat-conducting plate 15. The heat-conducting plate 15 is fixed at an angle to the outside of the cooling cylinder 14.

[0029] By setting the air blowing port 19, it is convenient to blow air into the air blowing box 17 through the cooling fan 18. The air is blown through the air blowing port 19 to the heat-conducting plate 15 on the outside of the cooling cylinder 14, and then blown to the circuit board body 13 inside the outer shell 1 for heat dissipation. This can remove the heat from the outer shell 1, ensure the heat dissipation of the electronic components inside the outer shell 1, and extend the service life of the photovoltaic inverter.

[0030] The water pump 8 has an outlet pipe 9 installed at its output end. One end of the outlet pipe 9 is fixedly installed with a delivery pipe 10. The delivery pipe 10 and the lower outer side of the multiple cooling cylinders 14 are fixedly installed in parallel through a connecting pipe. The left side of the box body 7 has a return pipe 12 fixedly installed. One end of the return pipe 12 is fixedly installed with a collecting pipe 11. The collecting pipe 11 and the top of the multiple cooling cylinders 14 are fixedly installed in parallel through a connecting pipe.

[0031] By setting up the infusion pipe 10 and the collection pipe 11, the coolant in the tank 7 can be drawn by the water pump 8 and delivered to the cooling cylinder 14 through the outlet pipe 9 and the infusion pipe 10. After the capacitor body 20 is cooled by the cooling cylinder 14, it is delivered to the return pipe 12 through the collection pipe 11 and returned to the tank 7 for recycling. This allows the coolant to be recycled and ensures that the coolant continuously cools the capacitor body 20 after circulation, preventing the capacitor body 20 from overheating and being damaged.

[0032] The top of the outer casing 1 is fixedly equipped with an air intake filter window 2, which corresponds to the position of the cooling fan 18. An exhaust window 5 is fixedly installed on one side of the outer casing 1.

[0033] By setting up an air intake filter window 2 and an exhaust window 5, it is convenient to filter garbage through the air intake filter window 2 to prevent garbage from entering the fixed box 16 and affecting the water pump 8. The exhaust window 5 can discharge the heat inside the outer shell 1, which is convenient for the cooling fan 18 to blow air to cool the inside of the outer shell 1.

[0034] The specific usage and function of this embodiment are as follows: In this invention, firstly, the cooling fan 18 blows air into the air-blowing box 17. The air is blown through the air outlet 19 onto the heat-conducting fins 15 on the outside of the cooling cylinder 14, and then onto the circuit board body 13 inside the outer casing 1 for heat dissipation, thus removing heat from the outer casing 1. When the temperature detector 21 detects that the heat of the capacitor body 20 exceeds a preset threshold, the temperature detector 21 transmits a signal to the controller. The controller controls the cooler 4 to start cooling the casing 7 and controls the water pump 8 to draw coolant from the casing 7, which is then transported to the outlet pipe 9 and the delivery pipe 10. Inside the cooling cylinder 14, the capacitor body 20 is cooled by the cooling cylinder 14, and then transported to the return pipe 12 through the manifold 11. The return pipe 12 then returns the coolant to the housing 7 for recycling. This allows for the continuous use of coolant to cool the capacitor body 20, preventing it from overheating and being damaged. At this time, the air blown out by the cooling fan 18 is blown through the air outlet 19 to the heat-conducting plate 15 on the outside of the cooling cylinder 14 for heat exchange. The cool air blown towards the circuit board body 13 facilitates heat dissipation for the electronic components inside the housing 1, effectively preventing the electronic components from overheating.

[0035] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A photovoltaic inverter, comprising a partition (6) fixedly installed inside a housing (1), wherein a circuit board body (13) is fixedly installed inside the housing (1), and a plurality of capacitor bodies (20) are fixedly installed on the upper surface of the circuit board body (13), characterized in that: A cooling cylinder (14) is fixedly installed on the outside of the capacitor body (20). Multiple heat-conducting plates (15) are fixedly installed on the outside of the cooling cylinder (14). A box (7) is fixedly installed on the upper surface of the partition (6). Multiple coolers (4) are fixedly installed on the outside of the box (7). Multiple slots (3) are opened on the outside of the outer shell (1). The slots (3) correspond to the positions of the coolers (4). A water pump (8) is fixedly installed on the right side of the box (7). A fixed box (16) is fixedly sleeved on one side of the partition (6). Multiple cooling fans (18) are fixedly installed on the inside of the fixed box (16). An air blowing box (17) is fixedly installed at the bottom of the fixed box (16).

2. The photovoltaic inverter as described in claim 1, characterized in that: A temperature detector (21) is fixedly installed on the top of the cooling cylinder (14), and the temperature detector (21) is set one-to-one with the cooling cylinder (14).

3. The photovoltaic inverter as described in claim 1, characterized in that: The air blowing box (17) has multiple air blowing ports (19) on one side. The air blowing ports (19) are installed in a position corresponding to the heat-conducting plate (15). The heat-conducting plate (15) is fixed at an angle to the outside of the cooling cylinder (14).

4. A photovoltaic inverter as described in claim 1, characterized in that: The output end of the water pump (8) is equipped with a liquid outlet pipe (9), and a liquid delivery pipe (10) is fixedly installed at one end of the liquid outlet pipe (9). The liquid delivery pipe (10) and the lower outer sides of the multiple cooling cylinders (14) are fixedly installed in parallel through connecting pipes.

5. A photovoltaic inverter as described in claim 1, characterized in that: A return pipe (12) is fixedly installed on the left side of the box (7), and a collection pipe (11) is fixedly installed at one end of the return pipe (12). The collection pipe (11) and the top of the multiple cooling cylinders (14) are fixedly installed in parallel through connecting pipes.

6. A photovoltaic inverter as described in claim 1, characterized in that: An air intake filter window (2) is fixedly installed on the top of the outer casing (1), and the air intake filter window (2) corresponds to the position of the cooling fan (18). An exhaust window (5) is fixedly installed on one side of the outer casing (1).

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