Solar energy storage inverter

Abstract

The application discloses a solar energy storage inverter and belongs to the technical field of solar energy storage inverters.The solar energy storage inverter comprises a storage inverter, a radiator fixedly arranged at the back of the storage inverter, an inverter mainboard arranged in the storage inverter, a heat dissipation mechanism arranged in the radiator, a heat dissipation regulation and control assembly and a temperature sensing assembly, and a maintenance positioning mechanism arranged in the storage inverter.The regulation and control fanfold is folded by a plurality of regulation and control main leaves and regulation and control auxiliary leaves with staggered heat dissipation holes.Under the drive of the temperature sensing regulation and control column, the folding degree of the fanfold automatically changes with temperature: when the temperature is high, the fanfold is dispersedly folded, the staggered heat dissipation holes form meandering air ducts, the ventilation space is opened, and the heat inside the storage inverter is actively transferred to the radiator in cooperation with the heat dissipation fan; when the temperature is low, the fanfold is completely folded, the heat dissipation holes are stacked and closed to each other, and only the back plate is used for heat dissipation, so that the area of the heat dissipation channel is continuously and adaptively regulated with the temperature, and the rough control of the traditional two-state switching is avoided.

Description

Technical Field

[0001] This invention relates to the field of solar energy storage inverter technology, and more particularly to a solar energy storage inverter. Background Technology

[0002] Solar energy storage inverters are the core equipment in photovoltaic power generation systems. They are responsible for converting the direct current (DC) generated by photovoltaic panels into alternating current (AC) to supply electrical equipment, while also providing energy storage management functions. Because the inverter motherboard generates a lot of heat when operating at high power, and the equipment is often installed in outdoor or semi-outdoor environments, facing complex conditions such as high temperature, high humidity, and dust, heat dissipation and protection have always been key technical issues for this type of equipment.

[0003] Currently, solar energy storage inverters generally employ a structure of cooling fans and heat dissipation grilles, creating a through-flow convection airflow between the air inlet and outlet to remove internal heat. However, this convection mode, while dissipating heat, inevitably draws dust, moisture, and corrosive gases from the outside air into the device. Long-term operation can lead to dust accumulation on circuit boards and moisture-induced corrosion of components, significantly reducing the device's lifespan and operational reliability. Furthermore, some existing devices feature openable baffles at the heat dissipation vents, but these typically only allow for two states: fully open or fully closed, failing to continuously adjust the heat dissipation channel area according to temperature changes. In low-temperature or high-humidity environments, a fully open vent still allows prolonged contact between the internal components and the outside environment, resulting in moisture intrusion.

[0004] Therefore, there is an urgent need for a solar energy storage inverter to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art by proposing a solar energy storage inverter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A solar energy storage inverter includes an energy storage inverter, a heat sink fixedly mounted on the back of the energy storage inverter, an inverter main board inside the energy storage inverter, a heat dissipation mechanism inside the heat sink, the heat dissipation mechanism being composed of a heat dissipation control component and a temperature sensing component, and a maintenance positioning mechanism inside the energy storage inverter. The temperature sensing component includes a temperature sensing cylinder fixedly disposed inside the radiator, and a temperature sensing control column is slidably connected to the inner wall of the temperature sensing cylinder. The heat dissipation control component includes a substrate disposed on the inverter motherboard, a control fan fixedly disposed on the back of the substrate, a heat dissipation fan disposed on the side wall of the heat sink, and a heat dissipation plate fixedly disposed inside the heat sink through a diversion column. The maintenance positioning mechanism includes a positioning seat mounted on the inverter motherboard, and an electric push rod is installed on the positioning seat.

[0007] Preferably, the energy storage inverter has a front panel fixedly installed on its front side, a control panel is provided on the front panel, and an energy storage interface electrically connected to the inverter motherboard is provided at the bottom of the energy storage inverter.

[0008] Preferably, the energy storage inverter has a guide column that is slidably connected to the inverter motherboard, and the side wall of the energy storage inverter has a positioning hole.

[0009] Preferably, the temperature sensing cylinder is equipped with a one-way valve, and the temperature sensing cylinder contains a temperature-sensing liquid.

[0010] Preferably, the connection between the energy storage inverter and the heat sink is provided with a control drive hole and a heat dissipation port, the control drive hole is slidably connected to the temperature sensing control column, and the control fan is disposed inside the heat dissipation port.

[0011] Preferably, the substrate and the heat sink are fixedly connected by a control fan, which is formed by folding multiple control main blades and control secondary blades, and the control main blades and control secondary blades are provided with staggered heat dissipation holes.

[0012] Preferably, the positioning hole consists of a closed hole, a dehumidification hole, and an inspection hole arranged sequentially from back to front, and the electric actuator is inserted into the positioning hole via a positioning rod.

[0013] Preferably, the positioning seats are symmetrically arranged on the front of the inverter mainboard, and the electric push rod is provided with a maintenance slot.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention directly drives the temperature sensing control column to extend and retract through the vaporization and liquefaction of the low-boiling-point temperature-sensing liquid inside the temperature-sensing cylinder, thereby moving the substrate. This process does not require a temperature sensor, control circuit, or external power supply, avoiding the failure risk of electronic temperature control components in high-temperature and high-humidity environments. It has a simple structure, low cost, high reliability, and no lag between temperature change and heat dissipation regulation, resulting in a rapid response.

[0015] 2. The adjustable folding fan in this invention is composed of multiple adjustable main blades and adjustable secondary blades with staggered heat dissipation holes. Driven by the temperature-sensing control column, the degree of folding of the fan automatically changes with the temperature: at high temperatures, it folds separately, forming a meandering air passage between the staggered heat dissipation holes, opening the ventilation space, and actively transferring internal heat to the radiator in conjunction with the cooling fan; at low temperatures, it folds completely, the heat dissipation holes are stacked and sealed, and only the back plate is left for heat dissipation. This achieves continuous adaptive adjustment of the heat dissipation channel area with temperature, avoiding the coarse control of traditional two-state switching.

[0016] 3. In the controlled folding fan state, the meandering air passage formed between the main blade and the secondary blade can condense and filter the incoming moisture. When the temperature drops below the threshold and the fan is fully folded, the water droplets formed by the condensation of moisture are collected in the heat dissipation port and blown directly to the outside of the radiator by the wind force of the cooling fan, thereby improving the dehumidification performance of the radiator. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the overall structure of a solar energy storage inverter proposed in this invention; Figure 2 This is an exploded view of the overall structure of a solar energy storage inverter proposed in this invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the inverter mainboard in a solar energy storage inverter proposed in this invention; Figure 5 This is a schematic diagram of the internal structure of the energy storage inverter and heat sink in a solar energy storage inverter proposed in this invention. Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B; Figure 7 For the present invention Figure 5 Enlarged view of the structure at point C; Figure 8 For the present invention Figure 5 Enlarged view of the structure at point D.

[0018] Reference numerals: 1. Energy storage inverter; 11. Front panel; 12. Control panel; 13. Energy storage interface; 14. Guide column; 15. Positioning hole; 2. Heat sink; 21. Cooling fan; 22. Temperature sensor cylinder; 221. Temperature sensing control column; 3. Inverter main board; 31. Positioning seat; 32. Electric actuator; 321. Positioning rod; 33. Base plate; 4. Control folding fan; 41. Control main blade; 42. Control secondary blade; 5. Heat sink; 51. Diverter column. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Example, refer to Figures 1 to 8 A solar energy storage inverter includes an energy storage inverter 1, a heat sink 2 fixedly installed on the back of the energy storage inverter 1, an inverter main board 3 installed inside the energy storage inverter 1, a heat dissipation mechanism installed inside the heat sink 2, the heat dissipation mechanism being composed of a heat dissipation control component and a temperature sensing component, and a maintenance positioning mechanism installed inside the energy storage inverter 1. Furthermore, a front panel 11 is fixedly installed on the front of the energy storage inverter 1, and a control panel 12 is provided on the front panel 11. An energy storage interface 13 that is electrically connected to the inverter motherboard 3 is provided at the bottom of the energy storage inverter 1. It should be noted that: the energy storage inverter 1 is connected to the photovoltaic panel and electrical equipment through the energy storage interface 13, and controls and observes the operating status of the inverter main board 3 through the control panel 12. The inverter main board 3 is electrically connected to the energy storage interface 13 through wires, which can maintain the normal operation of the entire device during the movement of the inverter main board 3. This is existing technology and will not be described in detail below.

[0023] like Figure 2 As shown, the temperature sensing component includes a temperature sensing cylinder 22 fixedly disposed inside the radiator 2, and a temperature sensing control column 221 is slidably connected to the inner wall of the temperature sensing cylinder 22. Furthermore, a one-way valve is provided on the temperature sensing cylinder 22, and the temperature sensing cylinder 22 contains a temperature sensing liquid. The temperature sensing liquid can be a liquid with a low boiling point, such as isopropanol, which can vaporize the liquid inside the temperature sensing cylinder 22 when the inverter is at high temperature, thereby driving the temperature sensing control column 221 to squeeze the substrate 33. It should be noted that in this invention, temperature sensing is achieved by monitoring the inverter's operating temperature changes through the liquid inside the temperature sensing cylinder 22. When the inverter's operating temperature is too high, the temperature sensing cylinder 22 drives the temperature sensing control column 221 to squeeze the substrate 33 through the vaporization of the internal liquid. When the inverter's operating temperature is too low, the gas inside the temperature sensing cylinder 22 liquefies, causing the temperature sensing control column 221 to move backward, pulling the substrate 33 backward.

[0024] like Figure 2 As shown, the heat dissipation control component includes a substrate 33 disposed on the inverter motherboard 3, a control fan 4 fixedly disposed on the back of the substrate 33, a heat dissipation fan 21 disposed on the side wall of the heat sink 2, and a heat dissipation plate 5 fixedly disposed inside the heat sink 2 through a diversion column 51. Furthermore, an adjustment drive hole and a heat dissipation port are provided at the connection between the energy storage inverter 1 and the heat sink 2. The adjustment drive hole is slidably connected to the temperature sensing control column 221, and the adjustment fan 4 is set in the heat dissipation port, so that the degree of folding of the adjustment fan 4 can be changed when the temperature sensing control column 221 drives the substrate 33 to move. Furthermore, the substrate 33 and the heat sink 5 are fixedly connected by the control fan 4. The control fan 4 is formed by folding multiple control main blades 41 and control secondary blades 42. The control main blades 41 and control secondary blades 42 are provided with staggered heat dissipation holes. When the control fan 4 is fully folded, the multiple staggered heat dissipation holes are stacked on each other, so that the space between the control fan 4 and the heat dissipation port is closed. When the control fan 4 is folded in a dispersed manner, the multiple staggered heat dissipation holes form a meandering air passage, so that the ventilation space between the control fan 4 and the heat dissipation port is opened. It should be noted that when the inverter operates at a high temperature, when the temperature sensing control column 221 presses the substrate 33 to drive the control fan 4 to fold in a dispersed manner, the heat dissipation holes between the control main blade 41 and the control secondary blade 42 are in the open state. Under the influence of the wind force of the cooling fan 21, the heat inside the inverter can be actively transferred directly to the heat sink 2, thereby dealing with the high temperature of the inverter in a timely manner. When the inverter is operating at a low temperature, the temperature sensing control column 221 pulls the base plate 33 to drive the control fan 4 to be in a fully folded state. The control main blade 41 and the control secondary blade 42 fold each other, and the heat dissipation hole between them is closed. The cooling fan 21 only dissipates heat from the inverter back plate. Furthermore, when the external environment is relatively humid, the moisture can be filtered out through the meandering heat dissipation channels. When the inverter temperature drops below the threshold, the water droplets condensed by the moisture can be collected in the heat dissipation port through the folding mechanism and blown out of the heat sink 2 by the cooling fan 21.

[0025] like Figure 5As shown, the maintenance positioning mechanism includes a positioning seat 31 mounted on the inverter mainboard 3, and an electric push rod 32 is mounted on the positioning seat 31.

[0026] Furthermore, the energy storage inverter 1 is fixedly provided with a guide column 14 that is slidably connected to the inverter main board 3. The side wall of the energy storage inverter 1 is provided with a positioning hole 15, which is composed of a closed hole, a dehumidification hole and a maintenance hole arranged sequentially from back to front. The electric push rod 32 is inserted into the positioning hole 15 through the positioning rod 321. Furthermore, the positioning base 31 is symmetrically arranged on the front of the inverter main board 3, and the electric push rod 32 is provided with a maintenance slot. When the energy storage inverter 1 needs to be maintained, the front panel 11 can be opened, the maintenance slot of the electric push rod 32 can be manually lifted, the positioning rod 321 can be aligned with the maintenance hole, and the electric push rod 32 can be activated to make the positioning rod 321 plug into the maintenance hole, so that the inverter main board 3 is close to the front outlet of the energy storage inverter 1, thereby facilitating maintenance personnel to carry out maintenance. It should be noted that when the temperature sensing component senses the inverter temperature through the temperature sensing cylinder 22 and drives the temperature sensing control column 221 to move the base plate 33, the position of the base plate 33 can be locked by the electric push rod 32, so that the folding state of the control fan 4 is in the optimal state (for example, when the inverter operating temperature is high, the electric push rod 32 first moves the positioning rod 321 out of the closed hole, and then moves the inverter main board 3 forward to the dehumidification hole, and the electric push rod 32 is activated to make the positioning rod 321 plug into the dehumidification hole; conversely, when the inverter operating temperature is low, the positioning rod 321 is moved out of the dehumidification hole and plugged into the closed hole, positioning the inverter main board 3 at the closed hole, avoiding long-term communication between the external environment and the inside of the inverter to contaminate the internal environment of the inverter). Thus, when the external environment is highly humid, the electric push rod 32 drives the positioning rod 321 to plug into the closed hole, so that the heat dissipation vent is in a closed state, preventing large amounts of moisture from entering the inverter and reducing its service life. Based on the above, when the inverter operates at a high temperature, the internal space of the inverter is under positive pressure due to the rising gas temperature, and the internal space of the inverter is in a semi-closed state. When the cooling fan 21 is working, it will only remove the heat inside the inverter and will not form a convective airflow. This will prevent dust and moisture from the external environment from directly entering the inverter. Furthermore, the temperature sensing cylinder 22 can withstand a certain degree of negative pressure or high pressure, and can maintain an internal closed state when the positioning rod 321 is inserted into the corresponding positioning hole 15.

[0027] Working principle: The energy storage inverter 1 of the present invention performs heat dissipation through the heat sink 2 in two processes: high-temperature heat dissipation and low-temperature heat dissipation. Before this, the operating temperature of the energy storage inverter 1 is sensed by a temperature sensing component. The sensing process is as follows: a temperature sensing liquid is injected into the temperature sensing cylinder 22 through a one-way valve. The temperature sensing liquid can be a liquid with a low boiling point, such as isopropanol. When the inverter operating temperature is too high, the temperature sensing cylinder 22 drives the temperature sensing control column 221 to squeeze the substrate 33 through the vaporization of the internal liquid. When the inverter operating temperature is too low, the gas inside the temperature sensing cylinder 22 liquefies, causing the temperature sensing control column 221 to move backward, pulling the substrate 33 backward.

[0028] The high-temperature heat dissipation process of the energy storage inverter 1 is as follows: When the inverter operates at a high temperature, the temperature sensing control column 221 squeezes the substrate 33 to drive the control fan 4 to fold in a dispersed manner. At this time, the heat dissipation holes between the control main blade 41 and the control secondary blade 42 are open. Under the influence of the wind force of the cooling fan 21, the heat inside the inverter can be actively transferred directly to the heat sink 2, thereby timely handling the high temperature of the inverter operation.

[0029] The low-temperature heat dissipation process of the energy storage inverter 1 is as follows: when the inverter is operating at a low temperature, the temperature sensing control column 221 pulls the base plate 33 to drive the control fan 4 to be in a fully folded state. The control main blade 41 and the control secondary blade 42 fold each other, and the heat dissipation hole between them is closed. The cooling fan 21 only dissipates heat from the inverter back plate.

[0030] Based on the above, when the external environment is relatively humid, the moisture can be filtered out through the meandering heat dissipation channels. When the inverter temperature drops below the threshold, the water droplets condensed by the moisture can be collected in the heat dissipation port through the folding mechanism and blown out of the heat sink 2 by the cooling fan 21.

[0031] Furthermore, when the temperature sensing component senses the inverter temperature through the temperature sensing cylinder 22 and drives the temperature sensing control column 221 to move the base plate 33, the position of the base plate 33 can be locked by the electric push rod 32. This ensures that the folding state of the control fan 4 is in the optimal state (e.g., when the inverter operating temperature is high, the electric push rod 32 first moves the positioning rod 321 out of the sealed hole, then moves the inverter main board 3 forward to the dehumidification hole, and activates the electric push rod 32 to make the positioning rod 321 plug into the dehumidification hole; conversely, when the inverter operating temperature is low, the positioning rod 321 is moved out of the dehumidification hole and plugged into the sealed hole, positioning the inverter main board 3 at the sealed hole, preventing the external environment from being in contact with the inside of the inverter for a long time and contaminating the internal environment of the inverter). Thus, when the external environment is highly humid, the electric push rod 32 drives the positioning rod 321 to plug into the sealed hole, keeping the heat dissipation vent in a closed state, preventing excessive moisture from entering the inverter and reducing its service life.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A solar energy storage inverter, comprising an energy storage inverter (1), characterized in that, The energy storage inverter (1) has a heat sink (2) fixedly installed on the back. The energy storage inverter (1) has an inverter motherboard (3) installed inside. The heat sink (2) has a heat dissipation mechanism installed inside. The heat dissipation mechanism consists of a heat dissipation control component and a temperature sensing component. The energy storage inverter (1) has a maintenance positioning mechanism installed inside. The temperature sensing component includes a temperature sensing cylinder (22) fixedly installed inside the radiator (2), and a temperature sensing control column (221) is slidably connected to the inner wall of the temperature sensing cylinder (22). The heat dissipation control component includes a substrate (33) disposed on the inverter motherboard (3), a control fan (4) fixedly disposed on the back of the substrate (33), a heat dissipation fan (21) disposed on the side wall of the heat sink (2), and a heat dissipation plate (5) fixedly disposed inside the heat sink (2) through a diversion column (51). The maintenance positioning mechanism includes a positioning seat (31) set on the inverter main board (3), and an electric push rod (32) is installed on the positioning seat (31).

2. The solar energy storage inverter according to claim 1, characterized in that, The energy storage inverter (1) has a front panel (11) fixedly installed on its front side. The front panel (11) is equipped with a control panel (12). The bottom of the energy storage inverter (1) is equipped with an energy storage interface (13) that is electrically connected to the inverter motherboard (3).

3. A solar energy storage inverter according to claim 1, characterized in that, The energy storage inverter (1) is fixedly provided with a guide column (14) that is slidably connected to the inverter motherboard (3), and the side wall of the energy storage inverter (1) is provided with a positioning hole (15).

4. A solar energy storage inverter according to claim 1, characterized in that, The temperature sensing cylinder (22) is equipped with a one-way valve, and the temperature sensing liquid is contained inside the temperature sensing cylinder (22).

5. A solar energy storage inverter according to claim 1, characterized in that, The energy storage inverter (1) and the heat sink (2) are connected by an adjustment drive hole and a heat dissipation port. The adjustment drive hole is slidably connected to the temperature sensing control column (221). The adjustment fan (4) is set inside the heat dissipation port.

6. A solar energy storage inverter according to claim 3, characterized in that, The substrate (33) and the heat sink (5) are fixedly connected by a control fan (4). The control fan (4) is formed by folding multiple control main blades (41) and control secondary blades (42). The control main blades (41) and control secondary blades (42) are provided with staggered heat dissipation holes.

7. A solar energy storage inverter according to claim 3, characterized in that, The positioning hole (15) consists of a closed hole, a dehumidification hole and an inspection hole arranged sequentially from back to front. The electric push rod (32) is inserted into the positioning hole (15) through the positioning rod (321).

8. A solar energy storage inverter according to claim 1, characterized in that, The positioning seat (31) is symmetrically arranged on the front of the inverter main board (3), and the electric push rod (32) has a maintenance slot.

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