Fire extinguishing system and fire extinguishing method for intelligent power conversion cabinet and power conversion cabinet thereof
By designing a fire-fighting system in the smart battery swap cabinet, and using monitoring equipment and electronic locks to slide the rechargeable battery into the fire water tank to extinguish the fire, the problem of fire in the battery swap cabinet being difficult to extinguish the fire quickly, achieving a fast and safe fire extinguishing effect.
Patent Information
- Application Number
- CN202510029918.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-05-27
AI Technical Summary
When fire fighting is carried out in the battery swap cabinet, hot aerosols may cause secondary fires, and rechargeable batteries are difficult to extinguish fires quickly during fires.
Design a fire-fighting and fire-fighting system for intelligent battery swap cabinets, including distribution units, charging units, charging tanks, monitoring equipment and fire water tanks. By monitoring the status in the charging chamber, when an abnormality occurs, the electronic lock opens, the battery slides down into the fire water tank, and the water body is used to extinguish the fire.
It realizes rapid and safe extinguishing of fires in the battery swap cabinet, prevents secondary fires, protects personnel and property safety, and reduces losses caused by fires.
Smart Images
Figure CN120049548A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of battery swapping cabinets, and particularly relates to a fire extinguishing system, a fire extinguishing method and a battery swapping cabinet for an intelligent battery swapping cabinet. Background Art
[0002] Thermal aerosol belongs to a total flooding system, which gradually extinguishes fires in a total flooding manner under the condition of controlling the fire source, enabling personnel to have sufficient time for evacuation and escape. It is applicable to places such as transformer substations, generator rooms, cable mezzanines, cable wells, and cable trenches that are unmanned, relatively enclosed, and have small spaces. It is suitable for extinguishing fires of Class C flammable liquids such as diesel (except -35 diesel), heavy oil, and lubricating oil, and surface fires of combustible solid substances. Aerosol is stored in a solid state and does not have volatility itself, so there will be no problems such as leakage, has a long storage life, and can also facilitate real-time monitoring of the facilities in the protected area. However, when thermal aerosol is directly applied to fire extinguishing in a battery swapping cabinet, there are many rechargeable batteries in the battery swapping cabinet. When a rechargeable battery catches fire, during the process of using thermal aerosol for fire extinguishing, extremely high temperatures will be generated at the release port, which is extremely likely to cause the problem of secondary fires due to overheating of other rechargeable batteries. Moreover, since rechargeable batteries are usually placed in the charging bin, during a fire, the rechargeable batteries still remain in the charging bin, resulting in the inability to quickly extinguish the fire. Summary of the Invention
[0003] Object of the Invention: To provide a fire extinguishing system, a fire extinguishing method and a battery swapping cabinet for an intelligent battery swapping cabinet, which solve the above problems existing in the prior art.
[0004] Technical Solution: An intelligent battery swapping cabinet fire extinguishing system includes a power distribution unit, the input end of the power distribution unit is connected to the commercial power, and the output end of the power distribution unit is connected to the internal circuit of the battery swapping cabinet; A plurality of charging units, the input end of each group of charging units is connected to the output end of the power distribution unit, and the output end of the charging unit is used to charge the inserted rechargeable battery; A plurality of charging bins, the charging bins are arranged in a rectangular array in the battery swapping cabinet, front and rear ends of each group of charging bins are provided with bin doors, electronic locks are installed at the front and rear ends of the charging bins, the bin doors cooperate with the electronic locks to seal the charging bin, a monitoring device and a bin control unit are installed in each group of charging bins, the bin control unit is in communication connection with the monitoring device, and the monitoring device is used to detect the internal state of the charging bin; A fire fighting water tank, which is arranged at the lower end inside the battery swapping cabinet, the fire fighting water tank is filled with water, and a water level monitoring device is installed in the fire fighting water tank; The central control unit, the input end of the central control unit is connected to the output ends of the water level monitoring device and the bin control unit, and the output end of the central control unit is connected to the charging unit.
[0005] Preferably, the charging unit includes a PFC sub-circuit and a DCDC sub-circuit. The input end of the PFC sub-circuit is connected to the output end of the power distribution unit. The output end of the PFC sub-circuit is connected to the input end of the DCDC sub-circuit. The output end of the DCDC sub-circuit is connected to the monitoring unit. The PFC sub-circuit and the DCDC sub-circuit are respectively connected to the control output end of the central control unit through RS485. The monitoring device includes a smoke sensor, a temperature sensor and a door Hall sensor, and the real-time state in the charging bin is monitored by the smoke sensor, the temperature sensor and the door Hall sensor.
[0006] Preferably, a water immersion level sensor is installed in the fire fighting water tank. The water immersion level sensor is communicatively connected to the central control unit, and the water level state in the fire fighting water tank is obtained through the water immersion level sensor. When the water immersion level sensor detects that the water level in the fire fighting water tank is within a predetermined range, it is normally enabled. Otherwise, after the main control unit receives the information of the water immersion level sensor, a water immersion fault alarm is issued.
[0007] Preferably, the monitoring unit detects the working environment in the charging bin. When the detection unit detects that the smoke concentration in the charging bin reaches the threshold value, the main control unit controls the charging unit to stop charging the battery, triggers a smoke alarm fault, and the main control unit controls the electronic lock to open, and the battery slides into the fire fighting water tank; otherwise, the charging unit normally charges the battery.
[0008] Preferably, when the detection unit detects that the temperature in the charging bin is greater than or equal to 90 °C, the main control unit controls the charging unit to stop charging the battery, triggers a temperature alarm fault, and the main control unit controls the electronic lock to open, and the battery slides into the fire fighting water tank; otherwise, the charging unit normally charges the battery.
[0009] An intelligent battery swapping cabinet fire extinguishing method, through the fire extinguishing system of the intelligent battery swapping cabinet described above, includes the following steps: S1. Turn on the main control switch to power on and start the intelligent battery swapping cabinet. Put the battery to be charged into the charging bin and connect the charging line plug to the battery to be charged; S2. Control the charging of the battery pack to be charged in the charging bin through the charging unit. The battery to be charged transmits the charging information to the bin control unit through RS485. The bin control unit transmits the information to the central control unit through the CAN bus. The central control unit controls the charging unit to output a predetermined voltage and current to the battery to be charged; S3. During the charging process of the charging unit charging the battery to be charged, the monitoring unit is used to monitor the working environment in the charging bin; S4. When the monitoring unit detects that the working environment in the charging bin is abnormal, the monitoring unit transmits the monitoring data to the main control unit. After receiving the signal, the main control unit controls the charging unit to stop charging the battery, and at the same time controls the electronic lock to open, so that the battery located in the battery bin slides into the fire water tank.
[0010] An intelligent battery swapping cabinet is equipped with the fire extinguishing system of the intelligent battery swapping cabinet described above, including a cabinet body. A number of charging bins are installed in the cabinet body in a matrix array. A pulley is installed on the inner wall of the bottom of each group of charging bins. The charging bins are installed in the cabinet body in an inclined state. Door bodies are installed at both opposite ends of the charging bin. One of the door bodies is located inside the cabinet body, and an electronic lock is installed on this door body. A main control unit is installed in the cabinet body. The main control unit is communicatively connected to the electronic lock. A monitoring component is installed in the charging bin. The monitoring component is communicatively connected to the main control unit. A fire water tank is installed at the bottom end inside the cabinet body. The fire water tank is used to hold water. A water immersion level sensor is installed in the fire water tank. The water immersion level sensor is communicatively connected to the main control unit.
[0011] Beneficial effects: The present invention relates to a fire extinguishing system, a fire extinguishing method and a battery swapping cabinet of an intelligent battery swapping cabinet. Through the power distribution unit, the fire extinguishing system is powered on and off. When the battery needs to be charged, the battery to be charged is placed in the charging bin, and the battery is charged by the charging unit. During the charging process, the state in the charging bin is monitored by the monitoring device. When an abnormality occurs in the charging bin, under the control of the central control unit, the rear door in the charging bin is opened, and the battery in the charging bin slides into the fire water tank. The water in the fire water tank is used to extinguish the fire of the battery. Through real-time monitoring and rapid response, measures can be taken in time to protect the safety of personnel and property. Secondly, using the water in the fire water tank for fire extinguishing can quickly extinguish the fire and reduce the temperature, thereby reducing the losses caused by the fire. Description of the Drawings
[0012] Figure 1 is the system block diagram of the present invention; Figure 2 is the circuit diagram of the charging unit of the present invention. Detailed Embodiments
[0013] Such as Figure 1As shown in the figure, the present invention provides a technical solution: a fire extinguishing system for an intelligent battery swapping cabinet, including a power distribution unit. The input end of the power distribution unit is connected to the mains power supply, and the output end of the power distribution unit is connected to the internal circuit of the battery swapping cabinet. The output end of the power distribution unit is also connected to the input ends of a number of charging units. The output end of the charging unit is used to charge the inserted charging battery. A number of charging bins are arranged in an array inside the battery swapping cabinet. Front and rear doors are provided at the front and rear ends of each group of charging bins. Electronic locks are installed at the front and rear ends of the charging bins. The doors are matched with the electronic locks to seal the charging bins. A monitoring device and a bin control unit are installed in each group of charging bins. The bin control unit is communicatively connected with the monitoring device. The monitoring device is used to detect the internal state of the charging bin. A fire fighting water tank is installed at the lower end inside the battery swapping cabinet. The fire fighting water tank is filled with water. A water level monitoring device is installed in the fire fighting water tank. The output ends of the water level monitoring device and the bin control unit are both connected to the input end of the central control unit. The output end of the central control unit is connected to the charging unit. Through the power distribution unit, the fire extinguishing system is powered on and off. When the battery needs to be charged, the battery to be charged is placed in the charging bin. The battery is charged by the charging unit. During the charging process, the monitoring device is used to monitor the state inside the charging bin. When an abnormality is detected inside the charging bin, under the control of the central control unit, the rear door inside the charging bin is opened, and the battery inside the charging bin slides into the fire fighting water tank. The water in the fire fighting water tank is used to extinguish the fire of the battery. Through real-time monitoring and rapid response, measures can be taken in time to protect the safety of personnel and property. Secondly, using the water in the fire fighting water tank for fire extinguishing can quickly extinguish the fire and reduce the temperature, thereby reducing the losses caused by the fire.
[0014] In a further embodiment, as Figure 2 shown, the charging unit includes a PFC sub-circuit and a DCDC sub-circuit. The input end of the PFC sub-circuit is connected to the output end of the power distribution unit. The output end of the PFC sub-circuit is connected to the input end of the DCDC sub-circuit. The output end of the DCDC sub-circuit is respectively connected to the monitoring unit and the battery to be charged. Among them, according to the different positions of the battery to be charged in the battery swapping cabinet, a predetermined length of wiring is reserved to ensure that the battery to be charged can smoothly slide into the fire fighting water tank. The PFC sub-circuit and the DCDC sub-circuit are respectively connected to the control output end of the central control unit through RS485. The monitoring device includes a smoke sensor, a temperature sensor and a door Hall sensor. The smoke sensor, the temperature sensor and the door Hall sensor are used to monitor the real-time state inside the charging bin. When an abnormality occurs inside the charging bin, the DCDC sub-circuit is controlled by the hollow unit to stop charging the battery to be charged.
[0015] In a further embodiment, a water immersion level sensor is installed in the fire fighting water tank. The water immersion level sensor is communicatively connected to a central control unit. The water level state in the fire fighting water tank is obtained through the water immersion level sensor. When the water immersion level sensor detects that the water level in the fire fighting water tank is within a predetermined range, it is normally enabled. On the contrary, after the main control unit receives the information from the water immersion level sensor, it issues a water immersion fault alarm. When a fault alarm is issued, the staff increases or decreases the water volume in the fire fighting water tank so that the water body in the fire fighting water tank reaches the predetermined range.
[0016] In a further embodiment, the monitoring unit detects the working environment in the charging bin. When the detection unit detects that the smoke concentration in the charging bin reaches the threshold value, the main control unit controls the charging unit to stop charging the battery, triggers a smoke alarm fault, and the main control unit controls the electronic lock to open, and the battery slides into the fire fighting water tank; on the contrary, the charging unit normally charges the battery. When the detection unit detects that the temperature in the charging bin is greater than or equal to 90 °C, the main control unit controls the charging unit to stop charging the battery, triggers a temperature alarm fault, and the main control unit controls the electronic lock to open, and the battery slides into the fire fighting water tank; on the contrary, the charging unit normally charges the battery. Due to the inclined state of the charging bin, when the electronic lock is opened, the battery directly slides out of the charging bin and falls into the fire fighting water tank. The water body in the fire fighting water tank is used to extinguish the fire and cool down the sliding battery. Since a predetermined length of charger is reserved between the output end of the DCDC sub-circuit and the connection point of the battery to be charged, when the battery to be charged is normally charged, the battery is charged through the DCDC sub-circuit. When sliding, the charging wire unfolds freely under the gravity of the battery, and the battery can slide smoothly into the fire fighting water tank.
[0017] An intelligent battery swapping cabinet fire extinguishing method, through the fire extinguishing system of the intelligent battery swapping cabinet described above, includes the following steps: First, turn on the main control switch to power on and start the intelligent battery swapping cabinet. Place the battery to be charged into the charging bin and connect the charging wire plug to the battery to be charged. The charging unit controls the charging of the battery pack to be charged in the charging bin. The battery to be charged transmits the charging information to the bin control unit through RS485. The bin control unit transmits the information to the central control unit through the CAN bus. The central control unit controls the charging unit to output a predetermined voltage and current to the battery to be charged; S3. During the charging process of the charging unit for the battery to be charged, the monitoring unit is used to monitor the working environment in the charging bin; When the monitoring unit detects that the working environment in the charging bin is abnormal, the monitoring unit transmits the monitoring data to the main control unit. After receiving the signal, the main control unit controls the charging unit to stop charging the battery, and at the same time controls the electronic lock to open, so that the battery in the battery bin slides into the fire fighting water tank.
[0018] An intelligent battery swapping cabinet is installed with the fire extinguishing system of the intelligent battery swapping cabinet described above, including a cabinet body. Inside the cabinet body, a junction box, a lightning protection module, an air switch with excitation tripping, an intelligent electric meter, Huilian busbars, and a wiring row are built into a power distribution unit, that is, the power distribution unit is used to control the overall power on and off of the battery swapping cabinet. Inside the cabinet body, several charging bins are installed in a matrix array. The charging bins are used to place the batteries to be charged. At the bottom inner wall of each group of charging bins, pulleys are installed. The charging bins are installed in an inclined state inside the cabinet body. At both opposite ends of the charging bins, door bodies are installed. One of the door bodies is located inside the cabinet body, and an electronic lock is installed on this door body. Inside the cabinet body, a main control unit is installed. The main control unit includes a charging unit and a control unit. Among them, the input of the charging unit is connected to the output of the power distribution unit, and the output of the charging unit is connected to the battery to be charged through a power supply elbow wire harness; the charging unit is controlled by the control unit through RS485. The control unit includes a 4G communication module, a CAN bus, and an RS485 interface. The 4G communication module is used for remote information communication, communicates and controls with each charging unit through the CAN bus, and communicates with the charging unit through RS485. The main control unit is communicatively connected to the electronic lock. Inside the charging bin, a monitoring component is installed. The monitoring component is communicatively connected to the main control unit. The monitoring component includes a smoke sensor, a temperature sensor, and a door Hall sensor. The main control unit is used to obtain the signal data of each component in the monitoring component. According to the obtained signal data, the opening and closing of the electronic lock at the rear end of the charging bin are controlled. A fan and a heater are also installed on the electric cabinet. Both the fan and the heater are controlled and connected to the main control unit. The main control unit is used to control the power on and off of the fan and the heater to adjust the temperature inside the electric cabinet. At the bottom end inside the cabinet body, a fire fighting water tank is installed. The fire fighting water tank is used to hold water. An immersion liquid level sensor is installed inside the fire fighting water tank. The immersion liquid level sensor is communicatively connected to the main control unit. The main control unit is used to obtain the signal data of the immersion liquid level sensor to control the water volume in the fire fighting water tank, so that the water volume in the fire fighting water tank always remains within a predetermined range.
[0019] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept scope of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. A fire extinguishing system for an intelligent power exchange cabinet, characterized in that: include: A power distribution unit, wherein the input end of the power distribution unit is connected to the mains, and the output end of the power distribution unit is connected to the internal circuit of the power exchange cabinet; A plurality of charging units, wherein the input end of each group of the charging units is connected to the output end of the power distribution unit, and the output end of the charging unit is used to charge the connected rechargeable batteries; Several charging compartments, the charging compartments are arranged in a rectangular array in the battery exchange cabinet, the front and rear ends of each group of the charging compartments are provided with compartment doors, the front and rear ends of the charging compartments are installed with electronic locks, the compartment doors cooperate with the electronic locks to seal the charging compartments, and monitoring equipment and a compartment control unit are installed in each group of the charging compartments, the compartment control unit is communicatively connected with the monitoring equipment, and the monitoring equipment is used to detect the internal state of the charging compartment; A fire water tank is provided at the lower end of the power exchange cabinet, the fire water tank is filled with water, and a water level monitoring device is installed in the fire water tank; A central control unit, wherein the input end of the central control unit is connected to the output end of the water level monitoring device and the warehouse control unit, and the output end of the central control unit is connected to the charging unit.
2. According to claim 1, a fire extinguishing system for an intelligent power exchange cabinet is characterized in that: The charging unit includes a PFC subcircuit and a DCDC subcircuit, the input end of the PFC subcircuit is connected to the output end of the power distribution unit, the output end of the PFC subcircuit is connected to the input end of the DCDC subcircuit, the output end of the DCDC subcircuit is connected to the monitoring unit, the PFC subcircuit and the DCDC subcircuit are respectively connected to the control output end of the central control unit via RS485, and the monitoring equipment includes a smoke sensor, a temperature sensor and a door Hall sensor, which are used to monitor the real-time status in the charging bin.
3. According to the fire extinguishing system of the intelligent power exchange cabinet of claim 1, it is characterized in that: A water level sensor is installed in the fire water tank. The water level sensor is communicatively connected to the central control unit. The water level status in the fire water tank is obtained through the water level sensor. When the water level sensor detects that the water level in the fire water tank is within a predetermined range, it is normally enabled. Otherwise, the main control unit issues a water fault alarm after receiving the water level sensor information.
4. The fire extinguishing system of the intelligent power exchange cabinet according to claim 1 is characterized in that: The monitoring unit detects the working environment inside the charging compartment. When the detection unit detects that the smoke concentration in the charging compartment reaches a threshold, the main control unit controls the charging unit to stop charging the battery, triggering a smoke alarm fault. The main control unit controls the electronic lock to open, and the battery slides into the fire water tank; otherwise, the charging unit charges the battery normally.
5. The fire extinguishing system of the intelligent power exchange cabinet according to claim 4 is characterized in that: When the detection unit detects that the temperature in the charging compartment is greater than or equal to 90°C, the main control unit controls the charging unit to stop charging the battery, triggering a temperature alarm fault. The main control unit controls the electronic lock to open, and the battery slides into the fire water tank; otherwise, the charging unit charges the battery normally.
6. A fire extinguishing method for an intelligent power exchange cabinet, using the fire extinguishing system for an intelligent power exchange cabinet according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Turn on the main control switch to power on the smart battery swap cabinet, put the battery to be charged into the charging compartment, and connect the charging cable plug to the battery to be charged; S2. The charging unit controls the charging of the battery pack to be charged in the charging bin. The battery to be charged transmits the charging information to the bin control unit via RS485. The bin control unit transmits the information to the central control unit via the CAN bus. The central control unit controls the charging unit to output a predetermined voltage and current to the battery to be charged. S3. When the charging unit is charging the battery to be charged, the monitoring unit is used to monitor the working environment in the charging bin. S4. When the monitoring unit detects that the working environment in the charging compartment is abnormal, the monitoring unit transmits the monitoring data to the main control unit. After receiving the signal, the main control unit controls the charging unit to stop charging the battery and controls the electronic lock to open, so that the battery in the battery compartment slides into the fire water tank.
7. An intelligent power exchange cabinet, equipped with a fire extinguishing system for an intelligent power exchange cabinet according to any one of claims 1 to 5, characterized in that: It includes a cabinet, a plurality of charging compartments are installed in a matrix array inside the cabinet, a pulley is installed on the inner wall of the bottom of each group of charging compartments, the charging compartments are installed in the cabinet in an inclined state, door bodies are installed at opposite ends of the charging compartments, one of the door bodies is located inside the cabinet, an electronic lock is installed on the door body, a main control unit is installed in the cabinet, the main control unit is communicatively connected with the electronic lock, a monitoring component is installed in the charging compartment, the monitoring component is communicatively connected with the main control unit, a fire water tank is installed at the bottom of the cabinet, the fire water tank is used to contain water, a water immersion level sensor is installed in the fire water tank, and the water immersion level sensor is communicatively connected with the main control unit.