Lightning stroke immunity detector for photovoltaic inverter
By designing a multi-chamber structure and cooling circulation system in the lightning impact detector of the photovoltaic inverter, the problem of insufficient heat dissipation performance of existing equipment is solved, and efficient heat dissipation effect is achieved, which extends the service life of the equipment and improves the accuracy of the detection results.
Patent Information
- Application Number
- CN202420872079.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing photovoltaic inverter's lightning immunity detector lacks heat dissipation performance, which leads to an increase in the internal temperature of the equipment, affects the performance and stability of electronic components, and may even cause equipment failures.
A lightning immunity detector including a detector main body and a shell is designed. A partition plate is provided inside the shell to divide it into multiple chambers, and the fan and gas pipelines are used for cooling. The coolant is further cooled through the cooling plate during the circulation process to achieve efficient heat dissipation.
Through an efficient heat dissipation mechanism, the detector body is kept at a lower temperature, extend the service life of the equipment, and improve the accuracy of the detection results and the stability of the equipment.
Smart Images
Figure CN222774625U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic inverter detection, in particular to a lightning strike immunity detector for photovoltaic inverters. Background Art
[0002] The lightning immunity tester for photovoltaic inverters is an important device used to test the working stability and immunity of photovoltaic inverters in harsh environments such as lightning strikes. In photovoltaic systems, the inverter is a key component that converts the direct current generated by photovoltaic modules into alternating current. Its performance and stability are directly related to the operation effect of the entire system. The lightning immunity tester will generate a certain amount of heat during operation, especially when performing high-load or long-term testing. If the heat cannot be dissipated in time, it will cause the internal temperature of the equipment to rise, which may affect the performance and stability of electronic components and may even cause equipment failure.
[0003] In the prior art, a lightning immunity tester for a photovoltaic inverter generally includes a tester body and a casing. The heat dissipation of the lightning immunity tester for a photovoltaic inverter is mainly achieved through a heat sink. Poor heat dissipation performance may not only affect the stability of the tester and the accuracy of the test results, but may also shorten its service life.
[0004] Therefore, it is necessary to provide a new lightning immunity detector for photovoltaic inverters to solve the above technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a lightning immunity detector for a photovoltaic inverter.
[0006] The utility model provides a lightning strike immunity detector for a photovoltaic inverter, comprising: a detector body and a shell, wherein a first partition plate and a second partition plate are arranged inside the shell, the first partition plate and the second partition plate divide the shell into a first chamber, a second chamber and a third chamber, the detector is placed in the first chamber, an air inlet and an air outlet are arranged in the first chamber, the air inlet and the air outlet both pass through the second partition plate and extend to the second chamber, a fan is arranged in the second chamber, the air inlet is connected to the air inlet of the fan, a gas pipeline is arranged below the first partition plate, the gas pipeline is arranged in the third chamber, one end of the gas pipeline extends to the second chamber and is connected to the air outlet of the fan, the other end of the gas pipeline extends to the second chamber and is fixedly connected to the air outlet, and the third chamber is filled with coolant.
[0007] Preferably, the gas pipeline is arranged in an "S" shape.
[0008] Preferably, the air inlet and the air outlet have the same structure, both comprising an "L"-shaped connecting pipe and a nozzle.
[0009] Preferably, the nozzle is of a "trumpet" type.
[0010] Preferably, a cooling device is provided at the bottom of the shell, and the cooling device includes a bottom cover, a circulation component and a third partition plate, the third partition plate divides the bottom cover into a first cover cavity and a second cover cavity, and the circulation component is located in the second cover cavity and fixedly connected to the bottom cover.
[0011] Preferably, the circulation component includes a first water guide member and a second water guide member, the first water guide member includes a first water inlet pipe, a first water pump and a first water outlet pipe, one end of the first water inlet pipe is located in the third chamber, the other end of the first water inlet pipe extends to the second chamber through the first partition plate to communicate with the first water pump input end, the first water pump output end is communicated with the first water outlet pipe, and the first water outlet pipe passes through the third partition plate to extend to the first cover cavity; the second water guide member includes a second water inlet pipe, a second water pump and a second water outlet pipe, one end of the second water inlet pipe is located in the third chamber, the other end of the second water inlet pipe extends to the second chamber through the second partition plate to communicate with the second water pump input end, the second water pump output end is communicated with the second water outlet pipe, and the second water outlet pipe passes through the third partition plate to extend to the second cover cavity.
[0012] Preferably, a guide plate is provided in the middle of the first cover cavity.
[0013] Preferably, a cooling plate is provided on the bottom cover.
[0014] Compared with the related art, the lightning immunity detector for photovoltaic inverter provided by the utility model has the following beneficial effects:
[0015] The utility model provides a lightning immunity detector for photovoltaic inverters, and heat dissipation plays a vital role in the entire working process. Since the lightning immunity detector generates a certain amount of heat when working, poor heat dissipation may cause the performance of the equipment to decline or be damaged. During the use of the device, the air inlet sucks the hot air in the first chamber into the gas pipeline through the fan, and the coolant in the second chamber cools the gas and then discharges it back to the first chamber through the air outlet, so that the first chamber is always kept in a low temperature state, thereby dissipating the heat of the detector body. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The overall structural diagram of the lightning immunity detector for photovoltaic inverters provided by the utility model;
[0017] Figure 2This is a schematic diagram of the internal front structure of the detector provided by the utility model;
[0018] Figure 3 A schematic diagram of the internal side structure of the detector provided by the utility model;
[0019] Figure 4 A schematic diagram of the gas exchange structure provided by the utility model;
[0020] Figure 5 This is a schematic diagram of the water circulation structure provided by the utility model.
[0021] Numbers in the figure: 1. first partition plate; 2. second partition plate; 3. air inlet; 4. air outlet; 5. fan; 6. gas pipeline; 7. connecting pipe; 8. nozzle; 9. bottom cover; 10. third partition plate; 11. first water inlet pipe; 12. first water pump; 13. first water outlet pipe; 14. second water inlet pipe; 15. second water pump; 16. second water outlet pipe; 17. drainage plate; 18. cooling plate; 19. outer casing. DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0023] Please refer to Figure 1-Figure 5 ,in, Figure 1 The overall structural diagram of the lightning immunity detector for photovoltaic inverters provided by the utility model; Figure 2 This is a schematic diagram of the internal front structure of the detector provided by the utility model; Figure 3 A schematic diagram of the internal side structure of the detector provided by the utility model;
[0024] Figure 4 A schematic diagram of the gas exchange structure provided by the utility model; Figure 5 This is a schematic diagram of the water circulation structure provided by the utility model.
[0025] In the specific implementation process, Figure 1-Figure 5As shown, a lightning immunity detector for photovoltaic inverters includes a detector body and a housing 19. The working principle of the detector body is that when the lightning immunity detector is tested, it will simulate the voltage and current pulse characteristics in real lightning strikes or surge events. These pulses may appear on the power input, output or communication interface of the inverter. The specific work process includes: generating simulated surges, injecting pulses, monitoring responses, evaluating results and repeating tests. A first partition plate 1 and a second partition plate 2 are provided inside the shell. The first partition plate 1 and the second partition plate 2 divide the shell into a first chamber, a second chamber and a third chamber. The detector is placed in the first chamber. An air inlet 3 and an air outlet 4 are provided in the first chamber. The air inlet 3 and the air outlet 4 both pass through the second partition plate 2 and extend to the second chamber. A fan 5 is provided in the second chamber. The air inlet 3 is connected to the air inlet of the fan 5. A gas pipeline 6 is provided below the first partition plate 1. The gas pipeline 6 is provided in the third chamber. One end of the gas pipeline 6 extends to the second chamber and is connected to the air outlet of the fan 5, and the other end of the gas pipeline 6 extends to the second chamber and is fixedly connected to the air outlet 4, and the third chamber is filled with coolant; the gas pipeline 6 is "S" shaped; the air inlet 3 and the air outlet 4 have the same structure, both of which include an "L"-shaped connecting pipe 7 and a nozzle 8, the connecting pipe 7 of the air inlet 3 is connected to the fan 5, and the air duct of the air outlet 4 is connected to the pipeline; the nozzle 8 is a "trumpet" type; a cooling device is provided at the bottom of the shell, and the cooling device includes a bottom cover 9, a circulation component and a third partition plate 10, the third partition plate 10 divides the bottom cover 9 into a first cover cavity and a second cover cavity, and the circulation component is located at the third partition plate 10. The second cover cavity is fixedly connected to the bottom cover 9; the circulation component includes a first water inlet member and a second water inlet member, the first water inlet member includes a first water inlet pipe 11, a first water pump 12 and a first water outlet pipe 13, one end of the first water inlet pipe 11 is located in the third chamber, the other end of the first water inlet pipe 11 extends to the second chamber through the first partition plate 1 and is connected to the input end of the first water pump 12, the output end of the first water pump 12 is connected to the first water outlet pipe 13, the first water outlet pipe 13 passes through the third partition plate 10 and extends to the first cover cavity; the second water inlet member includes a second water inlet pipe 14, a second water pump 15 and a second water outlet pipe 16, one end of the second water inlet pipe 14 is located in the third chamber, the second The other end of the water inlet pipe 14 extends to the second chamber through the second partition plate 2 and is connected to the input end of the second water pump 15. The output end of the second water pump 15 is connected to the second water outlet pipe 16. The second water outlet pipe 16 passes through the third partition plate 10 and extends to the second cover cavity. A drainage plate 17 is arranged in the middle of the first cover cavity. A cooling plate 18 is arranged on the bottom cover 9. The cooling plate 18 is a semiconductor refrigeration plate. The model of the semiconductor refrigeration plate is TEC1-12705. The semiconductor refrigeration plate is composed of P-type and N-type semiconductor elements of two different materials. They are arranged in a gap form and connected by direct current. Heat will be transferred from one end to the other end to achieve the heat dissipation effect.
[0026] The working principle provided by the utility model is as follows: when the device is in use, the air inlet 3 draws the hot air in the first chamber into the gas pipe 6 through the fan 5, the coolant in the second chamber cools the gas and then discharges it back to the first chamber through the air outlet 4, so that the first chamber is always kept in a low temperature state, thereby dissipating the heat of the detector body, and at the same time, the coolant in the third chamber will be discharged to the first cover cavity through the first water inlet pipe 11 and the first water outlet pipe 13 under the action of the first water pump 12, the temperature will be reduced under the action of the cooling plate 18, and then under the action of the second water pump 15, it will be discharged back to the third chamber through the second water inlet pipe 14 and the second water outlet pipe 16, thereby circulating and saving resources and making full use of them.
[0027] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.
[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A lightning immunity detector for photovoltaic inverters, characterized in that: include: A detector body and a shell (19), wherein a first partition plate (1) and a second partition plate (2) are arranged inside the shell (19), wherein the first partition plate (1) and the second partition plate (2) divide the shell (19) into a first chamber, a second chamber and a third chamber, wherein the detector is placed in the first chamber, wherein an air inlet (3) and an air outlet (4) are arranged in the first chamber, wherein both the air inlet (3) and the air outlet (4) pass through the second partition plate (2) and extend to the second chamber, wherein a fan (5) is arranged in the second chamber, wherein the air inlet (3) is connected to an air inlet of the fan (5), wherein a gas pipeline (6) is arranged below the first partition plate (1), wherein the gas pipeline (6) is arranged in the third chamber, wherein one end of the gas pipeline (6) extends to the second chamber and is connected to an air outlet of the fan (5), wherein the other end of the gas pipeline (6) extends to the second chamber and is fixedly connected to the air outlet (4), and wherein the third chamber is filled with a cooling liquid.
2. The lightning immunity detector for photovoltaic inverter according to claim 1, characterized in that: The gas pipeline (6) is arranged in an "S" shape.
3. The lightning immunity detector for photovoltaic inverter according to claim 2, characterized in that: The air inlet (3) and the air outlet (4) have the same structure, and both include an "L"-shaped connecting pipe (7) and a nozzle (8).
4. The lightning immunity detector for photovoltaic inverter according to claim 3, characterized in that: The nozzle (8) is of a "trumpet" type.
5. The lightning immunity detector for photovoltaic inverter according to claim 4, characterized in that: A cooling device is provided at the bottom of the shell (19), the cooling device comprising a bottom cover (9), a circulation component and a third partition plate (10), the third partition plate (10) dividing the bottom cover (9) into a first cover cavity and a second cover cavity, the circulation component being located in the second cover cavity and fixedly connected to the bottom cover (9).
6. The lightning immunity detector for photovoltaic inverter according to claim 5, characterized in that: The circulation component comprises a first water guide member and a second water guide member, wherein the first water guide member comprises a first water inlet pipe (11), a first water pump (12) and a first water outlet pipe (13), wherein one end of the first water inlet pipe (11) is located in the third chamber, and the other end of the first water inlet pipe (11) extends to the second chamber through the first partition plate (1) and is connected to the input end of the first water pump (12), and the output end of the first water pump (12) is connected to the first water outlet pipe (13), and the first water outlet pipe (13) passes through the third partition plate ( 10) extends to the first housing cavity; the second water guide member comprises a second water inlet pipe (14), a second water pump (15) and a second water outlet pipe (16); one end of the second water inlet pipe (14) is located in the third cavity; the other end of the second water inlet pipe (14) extends to the second cavity through the second partition plate (2) and is connected to the input end of the second water pump (15); the output end of the second water pump (15) is connected to the second water outlet pipe (16); the second water outlet pipe (16) passes through the third partition plate (10) and extends to the second housing cavity.
7. The lightning immunity detector for photovoltaic inverter according to claim 6, characterized in that: A flow guide plate (17) is arranged in the middle of the first cover cavity.
8. The lightning immunity detector for photovoltaic inverter according to claim 7, characterized in that: A cooling plate (18) is provided on the bottom cover (9).