Active fire-fighting inverter and photovoltaic power station
Patent Information
- Application Number
- CN202522050894.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-23
AI Technical Summary
[0003]但是这种功能仅能在一定程度上预防火灾发生，当光伏逆变器已经起火时，还是需要依赖消防员到达现场处理，现场处理费时耗力，且消防员到达现场的时效性很难把控，容易使火灾造成更大的损失
[0016]本实用新型实施例提供的光伏电站具有和上述主动消防逆变器相同的有益效果，在此不再赘述。
Smart Images
Figure CN224735630U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of inverter technology, specifically relating to an active fire-fighting inverter and a photovoltaic power station. Background Technology
[0002] In existing technologies, fire protection for photovoltaic inverters is mainly achieved by adding a fast disconnect function to the DC switch. This means that the DC switch is disconnected after an abnormal voltage or current fault is detected inside the photovoltaic inverter, in order to prevent the continuous input of DC power when a fault occurs and avoid the abnormal fault from developing into a fire.
[0003] However, this function can only prevent fires to a certain extent. When the photovoltaic inverter has already caught fire, it still depends on firefighters to arrive at the scene to handle it. On-site handling is time-consuming and labor-intensive, and it is difficult to control the timeliness of firefighters' arrival at the scene, which can easily cause greater losses from the fire. Utility Model Content
[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing an active fire-fighting inverter and photovoltaic power station, which can automatically extinguish fires on the main body of the inverter through an automatic fire extinguishing device, thereby improving the timeliness of fire extinguishing.
[0005] In a first aspect, this utility model provides an active fire-fighting inverter, which includes an inverter housing, an inverter body, and an automatic fire extinguishing device. The inverter body is disposed within the inverter housing. The automatic fire extinguishing device is disposed within the inverter housing and is used to detect the temperature of the inverter body and automatically extinguish the fire in the inverter body when the temperature of the inverter body exceeds a preset temperature.
[0006] In some embodiments, the automatic fire extinguishing device includes a temperature sensing wire and a fire extinguishing device body. The temperature sensing wire is disposed on the inverter body and is used to detect the temperature of the inverter body. The fire extinguishing device body is disposed inside the inverter housing and is electrically connected to the temperature sensing wire, used to receive the temperature of the inverter body, and to automatically extinguish the fire on the inverter body when the temperature of the inverter body is higher than a preset temperature.
[0007] In some embodiments, the inverter body includes a fire risk unit, which is a component in the inverter body that poses a fire risk; the temperature sensing wire is disposed on the fire risk unit.
[0008] In some embodiments, the fire risk unit includes at least one of an electrolytic capacitor, a gold film capacitor, a DC protection circuit, and an auxiliary power board.
[0009] In some embodiments, the fire risk unit includes an auxiliary power board disposed at the center of the inverter housing; the temperature sensing wire is disposed around the edge of the auxiliary power board.
[0010] In some embodiments, the inverter body includes a DC main switch. The active fire-fighting inverter also includes a linkage controller, which is electrically connected to the fire extinguishing device body and the DC main switch, respectively. The fire extinguishing device body is also used to send a linkage signal to the linkage controller while automatically extinguishing the fire on the inverter body; the linkage controller is used to control the DC main switch to disconnect after receiving the linkage signal.
[0011] In some embodiments, the linkage controller is a programmable logic controller.
[0012] In some embodiments, the automatic fire extinguishing device is an aerosol automatic fire extinguishing device or a perfluorohexanone fire extinguishing device.
[0013] Therefore, the active fire-fighting inverter provided in this utility model embodiment, by setting an automatic fire extinguishing device inside the inverter housing, can detect the temperature of the inverter body through the automatic fire extinguishing device, and automatically extinguish the fire when the temperature of the inverter body is higher than the preset temperature. Therefore, unlike the prior art, it does not need to wait for firefighters to arrive at the scene to deal with the fire, which can improve the timeliness of fire handling and avoid the fire from expanding and causing greater losses due to untimely fire handling.
[0014] Secondly, this utility model embodiment also provides a photovoltaic power station, which includes photovoltaic modules, the active fire-fighting inverter mentioned in the first aspect, and a transformer. The inverter body of the active fire-fighting inverter is electrically connected to the photovoltaic modules and is used to convert the input direct current into alternating current and output it to the transformer. The transformer is electrically connected to the active fire-fighting inverter and the external power grid and is used to boost the alternating current and output it to the external power grid.
[0015] In some embodiments, the photovoltaic power station further includes an energy storage battery. The energy storage battery is disposed between the photovoltaic module and the active fire-fighting inverter. The input terminal of the energy storage battery is electrically connected to the photovoltaic module, and the output terminal of the energy storage battery is electrically connected to the inverter body. It is used to store the electrical energy generated by the photovoltaic module and output the stored electrical energy to the inverter body.
[0016] The photovoltaic power station provided in this embodiment of the utility model has the same beneficial effects as the above-mentioned active fire-fighting inverter, which will not be repeated here. Attached Figure Description
[0017] Figure 1: A schematic diagram of an active fire-fighting inverter provided in an embodiment of this utility model.
[0018] Among them, 1-inverter housing; 2-automatic fire extinguishing device; 3-temperature sensing wire; 4-fire extinguishing device body; 5-fire risk unit; 6-DC main switch; 7-interlocking controller; 8-PV terminal; 9-auxiliary power supply board. Detailed Implementation
[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0020] Example 1:
[0021] like Figure 1 As shown in the figure, this utility model embodiment provides an active fire-fighting inverter, which is applied in a power system.
[0022] like Figure 1 As shown, the active fire-fighting inverter includes an inverter housing 1, an inverter body, and an automatic fire extinguishing device 2. The inverter body is housed inside the inverter housing 1. The automatic fire extinguishing device 2 is housed inside the inverter housing 1 and is used to detect the temperature of the inverter body and automatically extinguish the fire when the temperature of the inverter body exceeds a preset temperature.
[0023] For example, the inverter housing 1 is a metal housing used to protect the inverter body inside the inverter housing 1.
[0024] Automatic fire extinguishing device 2 is an aerosol automatic fire extinguishing device or a perfluorohexanone fire extinguishing device.
[0025] Automatic aerosol fire extinguishing systems are fire-fighting devices developed based on pyrotechnics technology. They extinguish fires by releasing aerosols containing nitrogen, carbon dioxide, and metal salt particles, and feature rapid response and no need for piping. Perfluorohexanone fire extinguishing systems are based on perfluorohexanone (C6F... 12 The environmentally friendly automatic fire extinguishing system (O) is widely used in fields such as power, new energy, and data centers.
[0026] For example, both the aerosol automatic fire extinguishing device and the perfluorohexanone fire extinguishing device have a temperature sensing function. After detecting that the temperature of the inverter body rises to the preset temperature, both the aerosol automatic fire extinguishing device and the perfluorohexanone fire extinguishing device can automatically start their own fire extinguishing program to automatically extinguish the fire on the inverter body.
[0027] For example, the preset temperature can be set based on the temperature of the inverter body under operating conditions and working experience.
[0028] For example, if the temperature of the inverter body is below 90°C during operation, and the flame temperature of the inverter body is above 200°C during a fire, the preset temperature can be set to 170°C. When the aerosol automatic fire extinguishing device and the perfluorohexanone fire extinguishing device detect that the temperature of the inverter body has risen to above 170°C, it can be determined that the inverter body is about to catch fire or has already caught fire, and thus the automatic fire extinguishing of the inverter body can begin.
[0029] Compared to relying on firefighters to arrive at the inverter site to extinguish a fire, this active fire-fighting inverter can automatically extinguish a fire when it detects a fire hazard (when the inverter's main body temperature exceeds a preset temperature), without waiting for firefighters to arrive. This improves the timeliness of fire response and prevents the fire from escalating and causing greater losses due to delayed fire handling.
[0030] Therefore, the active fire-fighting inverter provided in this embodiment of the utility model, by setting an automatic fire extinguishing device 2 in the inverter housing 1, can detect the temperature of the inverter body through the automatic fire extinguishing device 2, and automatically extinguish the fire in the inverter body when the temperature of the inverter body is greater than the preset temperature. Therefore, it is not necessary to wait for firefighters to arrive at the scene to deal with the fire, as in the prior art, which can improve the timeliness of fire handling and avoid the fire from expanding and causing greater losses due to untimely fire handling.
[0031] In some embodiments, such as Figure 1 As shown, the automatic fire extinguishing device 2 includes a temperature sensing wire 3 and a fire extinguishing device body 4. The temperature sensing wire 3 is installed on the inverter body and is used to detect the temperature of the inverter body. The fire extinguishing device body 4 is installed inside the inverter housing 1 and is electrically connected to the temperature sensing wire 3. It is used to receive the temperature of the inverter body and automatically extinguish the fire when the temperature of the inverter body is higher than a preset temperature.
[0032] The temperature sensing wire 3 is deformable and relatively long, so its placement can be flexibly adjusted to measure the temperature at different locations.
[0033] For example, such as Figure 1 As shown, the inverter body includes a PV (Photovoltaic) terminal 8, which is fixed to the first side wall of the inverter housing 1. The automatic fire extinguishing device 2 is fixed to the first side wall and located on one side of the PV terminal 8 to reduce the space occupied by the automatic fire extinguishing device 2 inside the inverter housing 1, and to provide better support and fixation for the automatic fire extinguishing device 2 through the first side wall.
[0034] For example, the main body 4 of the fire extinguishing device includes a fire extinguishing controller (e.g., an existing programmable logic controller) and a fire extinguishing actuator. The fire extinguishing controller can be an existing programmable logic controller. The fire extinguishing controller is used to receive the temperature of the inverter body and control the fire extinguishing actuator to extinguish the fire when the temperature of the inverter body is higher than a preset temperature.
[0035] By setting the temperature sensing wire 3, the position of the temperature measurement location can be conveniently adjusted while keeping the position of the main body 4 of the fire extinguishing device unchanged. For example, the temperature sensing wire 3 can be placed near components that are more prone to fire, so that the temperature rise change during the fire can be quickly detected when the component catches fire, thereby quickly and automatically extinguishing the fire on the main body of the inverter.
[0036] In some embodiments, such as Figure 1 As shown, the inverter body includes a fire risk unit 5, which is a component within the inverter body that poses a fire risk. A temperature sensing wire 3 is installed on the fire risk unit 5.
[0037] The fire risk unit 5 includes at least one of the following: an electrolytic capacitor, a gold film capacitor, a DC protection circuit, and an auxiliary power board 9.
[0038] For example, when the fire risk unit 5 only includes an electrolytic capacitor, the temperature sensing wire 3 can be placed on the electrolytic capacitor to quickly detect the temperature of the electrolytic capacitor. When the electrolytic capacitor on the inverter body catches fire, the fire extinguishing device body 4 can quickly and automatically extinguish the fire on the inverter body.
[0039] When the fire risk unit 5 includes an electrolytic capacitor, a gold film capacitor, and a DC terminal protection circuit, the temperature sensing wire 3 can be simultaneously installed on the electrolytic capacitor, the gold film capacitor, and the DC terminal protection circuit. The temperature of the electrolytic capacitor, the gold film capacitor, and the DC terminal protection circuit can be detected simultaneously through the temperature sensing wire 3. When any component of the electrolytic capacitor, the gold film capacitor, and the DC terminal protection circuit catches fire, the main body of the fire extinguishing device 4 can quickly and automatically extinguish the fire on the main body of the inverter.
[0040] With the above settings, the temperature of the fire risk unit 5 in the inverter body can be quickly detected by the temperature sensing wire 3, so that when a fire occurs in the fire risk unit 5, the fire extinguishing device body 4 can quickly and automatically extinguish the fire in the inverter body, improve the timeliness of the fire extinguishing device body 4 and prevent the fire from spreading.
[0041] In some embodiments, such as Figure 1 As shown, the fire risk unit 5 includes an auxiliary power board 9, which is located at the center of the inverter housing 1; the temperature sensing wire 3 is arranged around the edge of the auxiliary power board 9.
[0042] The auxiliary power board 9 is typically larger in size, such asFigure 1 As shown, with the above settings, after a fire occurs at any location on the auxiliary power board 9, the temperature sensing line 3 set around the edge of the auxiliary power board 9 can detect the temperature change on the auxiliary power board 9 in a timely manner. This avoids the temperature sensing line 3 being too far away from the ignition point on the auxiliary power board 9, which would affect the timeliness of temperature detection. As a result, the main body 4 of the fire extinguishing device can quickly and automatically extinguish the fire on the auxiliary power board 9.
[0043] In some embodiments, such as Figure 1 As shown, the inverter body includes a DC main switch 6. The active fire-fighting inverter also includes a linkage controller 7, which is electrically connected to the fire extinguishing device body 4 and the DC main switch 6. The fire extinguishing device body 4 is also used to send a linkage signal to the linkage controller 7 while automatically extinguishing the fire on the inverter body; the linkage controller 7 is used to control the DC main switch 6 to disconnect after receiving the linkage signal.
[0044] It should be noted that external DC power is input to the inverter main body after passing through DC main switch 6. For example... Figure 1 As shown, the number of DC main switches 6 can be three.
[0045] In some examples, the linkage controller 7 is a programmable logic controller.
[0046] For example, the linkage controller 7 is a Siemens S7-200 programmable logic controller.
[0047] For example, as described above, a fire extinguishing controller is provided inside the main body 4 of the fire extinguishing device. When the fire extinguishing controller controls the fire extinguishing actuator to extinguish the fire, the fire extinguishing controller simultaneously sends a linkage signal to the linkage controller 7.
[0048] With the above settings, the DC input of the inverter body can be disconnected when the main body 4 of the fire extinguishing device is automatically extinguishing the fire, so as to prevent the fire from continuing to spread and enable the main body 4 of the fire extinguishing device to efficiently and quickly deal with the fire in the inverter body.
[0049] Example 2:
[0050] This utility model embodiment also provides a photovoltaic power station, which includes photovoltaic modules, an active fire-fighting inverter, and a transformer. The inverter body of the active fire-fighting inverter is electrically connected to the photovoltaic modules and is used to convert the direct current generated by the photovoltaic modules into alternating current. The transformer is electrically connected to the active fire-fighting inverter and the external power grid and is used to step up the alternating current and output it to the external power grid.
[0051] For example, a photovoltaic module includes multiple photovoltaic panels. The photovoltaic module is used to generate direct current (DC).
[0052] The electricity generated by the photovoltaic modules is converted by the active fire-fighting inverter and then output to the transformer. The transformer boosts the voltage of the AC power to the same level as the external power grid voltage and outputs it to the external power grid.
[0053] Therefore, the photovoltaic power station in this embodiment, by installing an active fire-fighting inverter, can automatically extinguish fires when a fire occurs inside the active fire-fighting inverter, improving the timeliness of fire handling and preventing the fire from spreading and causing greater impact on the photovoltaic power station, thus improving the safety of the photovoltaic power station.
[0054] In some embodiments, the photovoltaic power plant further includes an energy storage battery. The energy storage battery is disposed between the photovoltaic module and the active fire-fighting inverter. The input terminal of the energy storage battery is electrically connected to the photovoltaic module, and the output terminal of the energy storage battery is electrically connected to the inverter body. It is used to store the electrical energy generated by the photovoltaic module and output the stored electrical energy to the inverter body.
[0055] Understandably, the power output of photovoltaic modules fluctuates at different times of the day, causing fluctuations in the power output to the active fire-fighting inverter and affecting its operational stability. Both the energy stored in the energy storage battery and the output power are direct current (DC).
[0056] With the above setup, the electrical energy generated by the photovoltaic modules can be stored in the energy storage battery to absorb the power fluctuations of the photovoltaic modules; then, the energy storage battery will stably output the stored electrical energy to the active fire protection inverter, which helps to maintain the working stability of the active fire protection inverter.
[0057] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. An active fire-fighting inverter, characterized in that, include: Inverter housing (1); The inverter body is disposed inside the inverter housing (1); and, An automatic fire extinguishing device (2) is installed inside the inverter housing (1) to detect the temperature of the inverter body and to automatically extinguish the fire when the temperature of the inverter body is greater than a preset temperature.
2. The active fire-fighting inverter according to claim 1, characterized in that, The automatic fire extinguishing device (2) includes: Temperature sensing wire (3), disposed on the inverter body, is used to detect the temperature of the inverter body; and, The main body (4) of the fire extinguishing device is installed inside the inverter housing (1) and electrically connected to the temperature sensing wire (3) to receive the temperature of the main body of the inverter and to automatically extinguish the fire of the main body of the inverter when the temperature of the main body of the inverter is greater than the preset temperature.
3. The active fire-fighting inverter according to claim 2, characterized in that, The inverter body includes a fire risk unit (5), which is a component in the inverter body that has a fire risk. The temperature sensing wire (3) is installed on the fire risk unit (5).
4. The active fire-fighting inverter according to claim 3, characterized in that, The fire risk unit (5) includes at least one of an electrolytic capacitor, a gold film capacitor, a DC protection circuit, and an auxiliary power supply board (9).
5. The active fire-fighting inverter according to claim 3, characterized in that, The fire risk unit (5) includes an auxiliary power board (9), which is located at the center of the inverter housing (1). The temperature sensing wire (3) is arranged around the edge of the auxiliary power board (9).
6. The active fire-fighting inverter according to claim 2, characterized in that, The inverter body includes a DC main switch (6); The active fire-fighting inverter also includes a linkage controller (7), which is electrically connected to the main body of the fire extinguishing device (4) and the DC main switch (6); The main body (4) of the fire extinguishing device is also used to send a linkage signal to the linkage controller (7) while automatically extinguishing the fire on the main body of the inverter; the linkage controller (7) is used to control the DC main switch (6) to disconnect after receiving the linkage signal.
7. The active fire-fighting inverter according to claim 6, characterized in that, The linkage controller (7) is a programmable logic controller.
8. The active fire-fighting inverter according to claim 1, characterized in that, The automatic fire extinguishing device (2) is an aerosol automatic fire extinguishing device or a perfluorohexanone fire extinguishing device.
9. A photovoltaic power station, characterized in that, include: Photovoltaic modules; The active fire-fighting inverter according to any one of claims 1-8, wherein the inverter body of the active fire-fighting inverter is electrically connected to the photovoltaic module, for converting the input direct current into alternating current and outputting it to the transformer; and, The transformer is electrically connected to the active fire-fighting inverter and the external power grid, and is used to step up the AC power and output it to the external power grid.
10. The photovoltaic power station according to claim 9, characterized in that, It also includes energy storage batteries; The energy storage battery is disposed between the photovoltaic module and the active fire-fighting inverter. The input end of the energy storage battery is electrically connected to the photovoltaic module, and the output end of the energy storage battery is electrically connected to the inverter body. It is used to store the electrical energy generated by the photovoltaic module and output the stored electrical energy to the inverter body.