New energy automobile charging system charging alarm and automatic fire extinguishing device

Abstract

The utility model relates to new energy automobile charging system charging alarm and automatic fire extinguishing device, including the charging shed, the charging shed is provided with respectively: spray fire extinguishing system, smoke alarm, passive infrared image sensor, charger and control module, due to the setting of spray fire extinguishing system, when the fire occurs in the charging shed, through the smoke alarm and passive infrared image sensor detect corresponding smoke concentration parameter and temperature change, can send the instruction to spray fire extinguishing system through control module, makes the pump body work, the water in solution tank is guided to the spray head, carries out the fire extinguishing, can be used in industrial production, has very strong practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of charging protection systems, and in particular relates to charging alarm and automatic fire extinguishing devices for new energy vehicle charging systems. Background Technology

[0002] With the development of the times, people's environmental awareness has become increasingly strong, and electric vehicles, which rely on electric power and emit no exhaust fumes, are favored by a wide range of users. However, with the development of the electric vehicle industry, the usage rate of electric vehicles is also on the rise, which has greatly increased the probability of malfunctions. Among these malfunctions, the most dangerous are those involving the battery or charger. The most dangerous issue is that continuing to charge the battery after it is fully charged can lead to excessive charging current and voltage, causing fires and other accidents. The People's Daily has reported on cases of battery malfunctions causing fires during electric vehicle charging for several consecutive years. Therefore, addressing the fire risk during the charging process of new energy vehicles and electric vehicles, this solution proposes a charging alarm and automatic fire extinguishing device for new energy vehicle charging systems. This device can effectively extinguish fires that occur during charging, improving charging safety. Utility Model Content

[0003] The technical problem this invention aims to solve is how to suppress the spread of fire in the event of a fire and improve safety during the charging process. To address its shortcomings, this invention provides a charging alarm and automatic fire extinguishing device for a new energy vehicle charging system.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A charging alarm and automatic fire extinguishing device for a new energy vehicle charging system includes a charging shed, wherein the charging shed is equipped with:

[0006] The sprinkler fire extinguishing system includes a solution tank fixed inside the charging shed, and sprinkler heads installed on the inner top of the charging shed. The sprinkler heads are connected to the solution tank via a pump body.

[0007] Smoke detector: Used to detect smoke concentration inside the charging shed;

[0008] Passive infrared image sensor: used to detect temperature changes inside the charging shed to determine if a fire has occurred;

[0009] Charger: Used for connection between power supply and car charging port. The charger is equipped with a miniature electric push rod. The free end of the piston rod of the miniature electric push rod is connected to a pin. The charger is equipped with an air bladder inside, which is filled with inert gas.

[0010] Control module: Includes a microcontroller for signal control between the smoke detector and the passive infrared image sensor, the sprinkler system, and the pump.

[0011] As a preferred embodiment, the charging shed includes a base plate, with side guards fixedly connected to both sides of the base plate by bolts, a placement rack fixedly connected to the inner side of one side guard plate, the charger located inside the placement rack, a canopy provided on the top of the two side guards, the spray head located inside the canopy, the solution tank placed on the base plate, and a rear guard plate connected to the middle of the two side guards.

[0012] As a preferred embodiment, the charger includes an upper cover and a lower cover that are connected to each other. The upper cover contains a PCB board, and a side baffle is fitted on the side of the upper cover located on the side of the PCB board. The lower cover contains an air switch and a transformer, and a cooling fan is provided on the side of the lower cover. A partition is provided between the upper cover and the lower cover, and an opening is provided on the surface of the partition. The opening is located directly below the airbag.

[0013] As a preferred embodiment, the upper surface of the lower cover is provided with a connecting protrusion connected to the upper cover, and the lower surface of the upper cover is provided with a connecting cavity that mates with the connecting protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Due to the installation of the sprinkler fire extinguishing system, when a fire occurs in the charging shed, the smoke detector and passive infrared image sensor detect the corresponding smoke concentration parameters and temperature changes, and the control module can send a command to the sprinkler fire extinguishing system to make the pump work and introduce water from the solution tank into the sprinkler head to extinguish the fire.

[0016] 2. Due to the coordinated design of the miniature electric push rod, ejector pin, and airbag inside the charger, when a fire occurs inside the charger due to component failure or other reasons, the smoke detector and passive infrared image sensor detect the corresponding smoke concentration parameters and local temperature changes. The control module then sends a command to the charger, causing the internal miniature electric push rod to extend, driving the ejector pin to puncture the airbag and release inert gas to effectively block the fire in its initial stage. This design can be applied to industrial production and has strong practicality. Attached Figure Description

[0017] Figure 1 This is an exploded view of the charging shed structure in this utility model.

[0018] Figure 2 This is an exploded view of the charger structure in this utility model.

[0019] Figure 3This is a schematic diagram of the control principle in this utility model.

[0020] In the diagram: 1 Solution tank, 2 Spray head, 3 Smoke alarm, 4 Passive infrared image sensor, 5 Miniature electric push rod, 6 Pin, 7 Airbag, 8 Base plate, 9 Side guard plate, 10 Placement rack, 11 Canopy, 12 Rear guard plate, 13 Top cover, 14 Bottom cover, 15 PCB board, 16 Side baffle, 17 Air switch, 18 Transformer, 19 Cooling fan, 20 Partition, 21 Opening, 22 Connecting protrusion. Detailed Implementation

[0021] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-2 This is a charging alarm and automatic fire extinguishing device for new energy vehicle charging systems, including a charging shed, which is equipped with:

[0023] The sprinkler fire extinguishing system includes a solution tank 1 fixed inside the charging shed, and a sprinkler head 2 installed on the inner top of the charging shed. The sprinkler head 2 is connected to the solution tank 1 via a pump body.

[0024] Smoke alarm 3: Used to detect smoke concentration in the charging shed;

[0025] Passive infrared image sensor 4: Used to detect temperature changes inside the charging shed and determine if there is a fire;

[0026] Charger: Used for connection between power supply and car charging port. The charger is equipped with a miniature electric push rod 5. The free end of the piston rod of the miniature electric push rod 5 is connected to a pin 6. The inside of the charger, which is directly opposite the pin 6, is equipped with an airbag 7, which is filled with inert gas.

[0027] Control module: Includes a microcontroller for signal control between the smoke detector 3 and the passive infrared image sensor 4, and the sprinkler fire extinguishing system and pump body.

[0028] Specifically, the charging shed includes a base plate 8, with side guard plates 9 bolted to both sides of the base plate 8. A placement rack 10 is fixedly connected to the inner side of one side guard plate 9, and the charger is located inside the placement rack 10. A canopy 11 is provided on the top of the two side guard plates 9, and a spray head 2 is located inside the canopy 11. A solution tank 1 is placed on the base plate 8, and a rear guard plate 12 is connected to the middle of the two side guard plates 9. The charger includes an upper cover 13 and a lower cover 14 that are connected to each other. A PCB board 15 is installed inside the upper cover 13, and a side baffle 16 is closed on the side of the upper cover 13 located on the side of the PCB board 15. An air switch 17 and a transformer 18 are installed inside the lower cover 14, and a cooling fan 19 is provided on the side of the lower cover 14. A partition 20 is provided between the upper cover 13 and the lower cover 14, and an opening 21 is opened on the surface of the partition 20, which is located directly below the airbag 7. The upper surface of the lower cover 14 is provided with a connecting protrusion 22 that is connected to the upper cover 13, and the lower surface of the upper cover 13 is provided with a connecting cavity that mates with the connecting protrusion 22.

[0029] The specific steps of this invention in operation are as follows:

[0030] The working process of the sprinkler fire extinguishing system: When the smoke alarm 3 detects that the smoke concentration in the charging shed is higher than the preset alarm value (smoke concentration value ≥ 300ppm), the alarm value is set based on the following: the smoke value generated by the combustion of domestic waste is in the range of 50-230ppm, the smoke value generated by the combustion of electric vehicles and batteries is in the range of 300-650ppm, and the smoke value generated by the combustion of fireworks and firecrackers is in the range of 50-160ppm. The electric vehicle safety device is installed in the parking shed next to the garbage pool. As long as the smoke value of the smoke alarm and the triggering of the sprinkler is set to above 300ppm, there will be no false triggering. The smoke alarm 3 sends a signal to the microcontroller of the control module. The microcontroller, as the control assembly, performs a power cut-off operation in the corresponding area, and then sends an electrical signal to start the pump, so that the pump works and introduces the water in the solution tank 1 into the sprinkler head 2 to extinguish the fire.

[0031] Automatic fire extinguishing process inside the charger: When a fire occurs inside the charger due to component damage or other reasons, once the smoke detector 3 detects the smoke level, the smoke detector 3 sends a signal to the microcontroller of the control module. The microcontroller, as the control assembly, then sends an electrical signal to activate the micro electric push rod 5, causing the free end of the micro electric push rod 5 to extend, causing the ejector pin 6 to puncture the airbag 7, releasing inert gas into the lower cover 14 through the opening 21 on the partition 20, effectively blocking the fire in the initial stage of the charger.

[0032] The fire can be determined by whether it is caused by an internal fire or an external fire, i.e., a fire in the charging shed. A passive infrared image sensor 4 is used to detect areas of temperature change. If the overall temperature inside the charging shed rises, it is determined that the fire is inside the charging shed. If only the temperature change at the charger is significant, it is determined that the fire is caused by damage to components inside the charger.

[0033] like Figure 3 As shown, this is the trigger circuit for the miniature electric cylinder and pump body. When the smoke alarm 3 and the passive infrared image sensor 4 send signals to the microcontroller in the control module, the microcontroller sends a command to energize the coil in the circuit, causing the circuit contacts of the miniature electric push rod 5 or the pump body to close, thereby enabling the miniature electric push rod 5 or the pump body to work.

[0034] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A charging alarm and automatic fire extinguishing device for a new energy vehicle charging system, characterized in that: It includes a charging shed, and the charging shed is equipped with: The sprinkler fire extinguishing system includes a solution tank fixed inside the charging shed, and sprinkler heads installed on the inner top of the charging shed. The sprinkler heads are connected to the solution tank via a pump body. Smoke detector: Used to detect smoke concentration inside the charging shed; Passive infrared image sensor: used to detect temperature changes inside the charging shed to determine if a fire has occurred; Charger: Used for connection between power supply and car charging port. The charger is equipped with a miniature electric push rod. The free end of the piston rod of the miniature electric push rod is connected to a pin. The charger is equipped with an air bladder inside, which is filled with inert gas. Control module: Includes a microcontroller for signal control between the smoke detector and the passive infrared image sensor, the sprinkler system, and the pump.

2. The charging alarm and automatic fire extinguishing device for a new energy vehicle charging system according to claim 1, characterized in that: The charging shed includes a base plate, with side guards fixedly connected to both sides of the base plate by bolts. A placement rack is fixedly connected to the inner side of one side guard plate, and the charger is located inside the placement rack. A canopy is provided on the top of the two side guards, and the spray head is located inside the canopy. The solution tank is placed on the base plate, and a rear guard plate is connected to the middle of the two side guards.

3. The charging alarm and automatic fire extinguishing device for a new energy vehicle charging system according to claim 2, characterized in that: The charger includes an upper cover and a lower cover that are connected to each other. The upper cover contains a PCB board, and a side baffle is fitted on the side of the upper cover located on the side of the PCB board. The lower cover contains an air switch and a transformer, and a cooling fan is installed on the side of the lower cover. A partition is provided between the upper cover and the lower cover, and an opening is provided on the surface of the partition. The opening is located directly below the airbag.

4. The charging alarm and automatic fire extinguishing device for a new energy vehicle charging system according to claim 3, characterized in that: The upper surface of the lower cover is provided with a connecting protrusion that connects to the upper cover, and the lower surface of the upper cover is provided with a connecting cavity that mates with the connecting protrusion.

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