Fire extinguishing system of battery charging and replacing cabinet

Abstract

The utility model discloses a fire extinguishing system of a battery charging and replacing cabinet, the battery charging and replacing cabinet comprises a cabinet body, a controller and a plurality of battery cabins are arranged in the cabinet body, each battery cabin is provided with a cabin door, the fire extinguishing system comprises nozzles arranged in each battery cabin, a water supply pipe is arranged on the cabinet body, one end of the water supply pipe is respectively communicated with the nozzles, and the other end of the water supply pipe is communicated with the cabin door. The other end of the cabinet body is externally connected with a water source, and an ignition detection device is arranged in the cabinet body and electrically connected with the controller. A limiting piece is fixedly arranged on the end face of the inner side of the bin door, sealing rings are arranged at the positions, matched with the battery bin, of the limiting piece respectively, the sealing rings can abut against the end face of the battery bin in a sealing mode, the sealing rings form a closed pattern, and the sealing rings are obliquely arranged in the center direction of the limiting piece. The battery compartment door has the function of extinguishing fire through fire-fighting water, the sealing performance of the compartment door is improved, the battery can be soaked and extinguished, and the battery can be rapidly cooled, so that the possibility of re-combustion of the battery is reduced, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging and swapping cabinets, and particularly relates to a fire extinguishing system for a charging and swapping cabinet. Background Art

[0002] In order to extend the driving range of electric bicycles, various charging piles, battery swapping cabinets, and charging cabinets have emerged on the market. The charging piles and charging cabinets have the same principle, that is, users need to carry their own chargers; the battery swapping cabinet directly replaces the dead battery in the electric bicycle with a charged battery in the cabinet, and the battery swapping cabinet will charge the dead battery.

[0003] Batteries are flammable and explosive items. Therefore, a fire extinguishing system needs to be equipped inside the charging and swapping cabinets. Currently, the common fire extinguishing systems inside the charging and swapping cabinets are mainly the following two types:

[0004] 1. Install a heat aerosol fire extinguisher in each battery cabinet. When a fire occurs in the battery in the battery cabinet, as the temperature in the battery cabinet rises, the heat aerosol fire extinguisher will automatically eject heat aerosol to extinguish the fire. Although this method can extinguish the open fire in a short time, it cannot quickly cool down the burning battery, and the risk of the battery reigniting is relatively high.

[0005] 2. Install spray heads in each battery cabinet. When a fire occurs in the battery in the battery cabinet, as the temperature in the battery cabinet rises, the spray heads will automatically spray water to extinguish the fire on the battery. However, the existing battery cabinet doors have poor sealing performance, and almost all the sprayed water will flow out through the gaps in the cabinet doors; in addition to being able to extinguish the fire, it cannot submerge the battery to cool it down, and the battery is also prone to reignite. On the other hand, the existing charging and swapping cabinets with such installed spray heads can only be installed and used in places where a fire hydrant can be externally connected because they need to be externally connected to a fire hydrant, so the usage scenarios are relatively limited. Summary of the Utility Model

[0006] In order to solve some or all of the problems existing in the above-mentioned prior art, the utility model provides a fire extinguishing system for a charging and swapping cabinet. The charging and swapping cabinet includes a cabinet body, and a controller and a plurality of battery compartments for placing batteries are arranged inside the cabinet body. Each battery compartment is provided with an openable and closable compartment door. The fire extinguishing system includes spray heads arranged in each battery compartment. A water supply pipe is arranged on the cabinet body. One end of the water supply pipe is respectively communicated with the spray heads, and the other end is externally connected to a water source. A fire detection device is arranged inside the cabinet body, and the fire detection device is electrically connected to the controller; a limiting member is fixedly arranged on the inner end face of the compartment door, and sealing rings are respectively arranged at the positions where the limiting member cooperates with the battery compartment. The sealing rings can be in sealing contact with the end face of the battery compartment. The sealing rings form a closed figure, and the sealing rings are inclined towards the center direction of the limiting member.

[0007] As a further improvement of the present utility model, a plurality of positioning posts are provided on the inner end surface of the bin door, positioning holes are respectively provided at the corresponding positions of the limiting member and the positioning posts, the positioning posts pass through the corresponding positioning holes, and a limiting nut is provided on each positioning post, and the limiting nut abuts against the limiting member.

[0008] As a further improvement of the present utility model, a detachable fire fighting water tank is provided on the cabinet body. The fire fighting water tank is provided with a water storage cavity and a control cavity. The water storage cavity is used for storing fire fighting water. A control board, a battery and a water pump are provided in the control cavity. The control board is electrically connected to the controller, and the battery and the water pump are respectively electrically connected to the control board; an outlet pipe is provided on the outer side wall of the control cavity, the output end of the water pump is connected to the outlet pipe, the other end of the outlet pipe is connected to the water supply pipe, a water suction pipe is provided at the input end of the water pump, and the water suction pipe extends into the water storage cavity.

[0009] As a further improvement of the present utility model, a return pipe is provided in the cabinet body. The return pipe penetrates through all the battery compartments, and overflow ports are respectively provided at the corresponding positions of the return pipe and each battery compartment. The return pipe is connected to the water storage cavity.

[0010] As a further improvement of the present utility model, a return water pump is provided in the control cavity. The return water pump is electrically connected to the control board. A return water pipe is provided on the outer side wall of the control cavity. The output end of the return water pump is connected to the water storage cavity, the input end of the return water pump is connected to the return water pipe, and the other end of the return water pipe is connected to the return pipe.

[0011] As a further improvement of the present utility model, a water collecting tank is provided in the cabinet body. The water collecting tank is respectively connected to the return pipe. A water passing port communicating with the return water pipe is provided in the water collecting tank, and a filter screen is provided on the water passing port.

[0012] As a further improvement of the present utility model, a water level detection switch is provided in the water storage cavity. The water level detection switch is electrically connected to the control board, and the water level detection switch is used for monitoring the water volume in the water storage cavity.

[0013] As a further improvement of the present utility model, the fire detection device includes a smoke sensor provided in the cabinet body and temperature sensors respectively provided at the top ends of the inner walls of each battery compartment. The smoke sensor and the temperature sensors are respectively electrically connected to the controller.

[0014] As a further improvement of the present utility model, an audible and visual alarm is provided at the upper end of the cabinet body. The audible and visual alarm is electrically connected to the controller.

[0015] As a further improvement of the present utility model, aerosol fire extinguishers are respectively provided at the top end of the inner wall of the battery compartment. The nozzles of the aerosol fire extinguishers are arranged towards the battery direction of the battery compartment, and the aerosol fire extinguishers are connected to the controller.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model has the function of extinguishing fire with fire-fighting water by arranging nozzles in each battery cabinet. By arranging limiters on the compartment door and obliquely arranging the sealing ring on the limiters, the sealing performance of the compartment door can be improved, thereby reducing the outflow of fire-fighting water from the gap of the compartment door. When a fire occurs, the fire-fighting water sprayed by the nozzles can stay in the battery compartment and soak the burning battery to extinguish the fire, enabling it to cool down quickly, thereby reducing the possibility of the battery reigniting and improving the use safety. During use, when closing the compartment door, the door frame will squeeze the sealing ring, causing it to deform towards the center direction of the limiter, so that the sealing ring can be in sealed contact with the door frame; when water is put into the battery compartment, the water pressure will squeeze the sealing ring, causing it to deform towards the edge of the limiter, so that the sealing ring fits more tightly with the door frame, thereby preventing water from leaking through the mating gap between the sealing ring and the door frame and improving the sealing performance of the compartment door. Description of the Drawings

[0018] In order to more clearly illustrate the solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the overall structural schematic diagram of the charging and swapping cabinet in the embodiment of the present utility model;

[0020] Figure 2 is the structural schematic diagram of another perspective of the charging and swapping cabinet in the embodiment of the present utility model;

[0021] Figure 3 is the internal structural schematic diagram of the cabinet body in the embodiment of the present utility model;

[0022] Figure 4 is the structural schematic diagram of the compartment door in the embodiment of the present utility model;

[0023] Figure 5 is Figure 4 the sectional structural schematic diagram of A-A in

[0024] Figure 6 is Figure 5 the enlarged structural schematic diagram of part B in

[0025] Figure 7 is a schematic structural diagram of a fire fighting water tank in an embodiment of the present utility model;

[0026] Figure 8 is a schematic internal structural diagram of a fire fighting water tank in an embodiment of the present utility model;

[0027] Figure 9 is a schematic side view structural diagram of a charging and swapping cabinet in an embodiment of the present utility model;

[0028] Figure 10 is Figure 9 a schematic cross-sectional structural diagram taken along line C-C in Detailed implementation manners

[0029] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects and not to describe a specific order.

[0030] Referring to "embodiment" in the present utility model means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in the present utility model can be combined with other embodiments.

[0031] In order to enable those skilled in the technical field to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0032] Such as Figure 1-10As shown in the figure, a fire extinguishing system for a charging and swapping cabinet is used to extinguish fires in the charging and swapping cabinet. The charging and swapping cabinet includes a cabinet body 1, a controller 2 and multiple battery compartments 3 for placing batteries are provided inside the cabinet body 1, and an openable and closable compartment door 4 is provided on each battery compartment 3. The fire extinguishing system includes nozzles 5 provided in each battery compartment 3. The nozzles 5 are respectively installed at the top end of the inner wall of the battery compartment 3. Protective baffles 6 are respectively installed at positions corresponding to the nozzles 5 in the battery compartment 3. The protective baffles 6 are sleeved around the nozzles 5. By providing the protective baffles 6, it can avoid the situation that the nozzles are damaged when users take and place batteries in the battery compartment 3, providing good protection for the nozzles 5; at the same time, the protective baffles 6 can also be used to limit the spraying range of the nozzles 5, so that the water sprayed by the nozzles 5 can quickly spray onto the batteries in the battery compartment 3 to cool and extinguish the batteries; the nozzles 5 can adopt any existing fire nozzle. When the temperature in the battery compartment 3 reaches the threshold value, the glass beads of the nozzles 5 will automatically burst and spray water. A water supply pipe 7 is installed on the cabinet body 1. The water supply pipe 7 extends into each battery compartment 3 respectively and is communicated with the nozzles 5 in the battery compartment 3. The other end of the water supply pipe 7 is communicated with a water source; a fire detection device is installed inside the cabinet body 1, and the fire detection device is connected to the controller 2. During use, when a fire breaks out in the battery compartment 3, the fire detection device can detect the fire point and feedback a signal to the controller 2, and the controller 2 immediately controls the charging and swapping cabinet to cut off the power; when the temperature in the burning battery compartment 3 reaches the threshold value, the glass beads on the nozzles 5 automatically burst, and the nozzles 5 will spray water to cool and extinguish the burning batteries.

[0033] As Figure 1 , Figure 4 , Figure 5 , Figure 6 As shown in the figure, a limiting member 41 is fixedly provided on the inner end face of the compartment door 4. Sealing rings 42 are respectively provided at positions where the limiting member 41 cooperates with the battery compartment 3. The sealing rings 42 can be in sealing contact with the end face of the battery compartment 3. The sealing rings 42 form a closed figure, and the sealing rings 42 are inclined towards the center direction of the limiting member 41. During use, when closing the compartment door 4, the battery compartment 3 will squeeze the sealing rings 42, causing them to deform towards the center direction of the limiting member 41, so that the sealing rings 42 can be in sealing contact with the battery compartment 3; when the nozzles 5 inject water into the battery compartment 3, the water pressure will squeeze the sealing rings 42, causing them to deform towards the edge of the limiting member 41, making the sealing rings 42 fit tighter and tighter with the battery compartment 3, thereby preventing water from leaking from the mating gap between the sealing rings 42 and the battery compartment 3 and improving the sealing performance of the compartment door 4. Thus, through the inclined sealing rings 42, the sealing performance of the compartment door 4 can be improved, thereby reducing the outflow of fire-fighting water from the gap of the compartment door 4, so that when a fire occurs, the fire-fighting water sprayed by the nozzles 5 can stay in the battery compartment 3 to soak and extinguish the burning batteries, enabling them to cool down quickly, thereby reducing the possibility of battery reignition and improving the use safety.

[0034] Specifically, a plurality of positioning posts 43 are provided on the inner end face of the bin door 4. Positioning holes 44 are respectively provided at positions corresponding to the positioning posts 43 on the limiting member 41. The positioning posts 43 pass through the corresponding positioning holes 44, and a limiting nut 45 is provided on each positioning post 43. The limiting nut 45 abuts against the limiting member 41. When assembling the bin door 4, first align the positioning holes 44 on the limiting member 41 with the corresponding positioning posts 43 respectively, so that each positioning post 43 passes through the corresponding positioning hole 44, and then screw each limiting nut 45 onto the positioning post 43 until the limiting nut 45 abuts against the limiting member 41, thereby making the limiting member 41 and the bin door 4 be limited and fixedly connected. Through the cooperation of the positioning posts 43 on the bin door 4 and the positioning holes 44 on the limiting member 41, the installation position of the limiting member 41 can be fixed, ensuring the consistency of assembly; and the use of the limiting nut 45 for fixation reduces the assembly difficulty, thereby improving the assembly efficiency and reducing the labor cost.

[0035] In this embodiment, the sealing ring 42 forms a chamfered rectangular shape; in other embodiments, the sealing ring 42 can also form other sealing patterns, such as: circular, oval, etc.

[0036] The included angle between the sealing ring 42 and the end face of the limiting member 41 is 30° - 70°, and the preferred included angle between the sealing ring 42 and the end face of the limiting member 41 is 65°.

[0037] The sealing ring 42 and the limiting member 41 are of an integrally formed structure and can be integrally injection molded by two-color injection molding. In this embodiment, the limiting member 41 is made of a hard plastic material, and the sealing ring 42 is made of a soft plastic material.

[0038] In order to improve the overall structural rigidity of the limiting member 41, a circle of reinforcing ribs 46 is provided on the inner side wall of the limiting member 41, and the reinforcing ribs 46 form a closed chamfered rectangle. By providing the reinforcing ribs 46, the structural rigidity of the limiting member 41 can be improved, the installation difficulty can be reduced, and the situation of water leakage caused by the deformation of the limiting member 41 can also be avoided.

[0039] In this embodiment, the number of the positioning posts 43 is 4, and the 4 positioning posts 43 are rectangularly distributed on the inner side wall of the bin door 4; the positioning holes 44 on the limiting member 41 are arranged in one-to-one correspondence with the positions of the positioning posts 43. In other embodiments, the number and distribution mode of the positioning posts 43 can also be any other form, as long as it is ensured that the limiting member 41 can be fixedly installed on the bin door 4.

[0040] As Figure 3As shown in the figure, the fire detection device includes a smoke sensor 8 disposed in the cabinet body 1 and temperature sensors 9 respectively disposed at the top ends of the inner walls of each battery compartment 3. The smoke sensor 8 and the temperature sensors 9 are electrically connected to the controller 2 respectively. Any existing type of smoke sensor 8 can be used to detect the amount of smoke in the cabinet body 1. When the smoke in the cabinet body 1 reaches the threshold value, the smoke sensor 8 will send a fire signal to the controller 2. Any existing type of temperature sensor 9 can be used to detect the temperature in each battery compartment 3. When the temperature in the battery compartment 3 reaches the threshold value, the temperature sensor 9 will send a fire signal to the controller 2. Through the smoke sensor 8 and the temperature sensors 9, the controller 2 can timely obtain the fire signal, so as to timely control the charging and swapping cabinet to cut off the power, reduce the risk of fire spillover, and reduce losses.

[0041] An audible and visual alarm 10 is provided at the upper end of the cabinet body 1. The audible and visual alarm 10 is electrically connected to the controller 2. When the controller 2 receives the fire signal sent by the smoke sensor 8 or the temperature sensor 9, it will control the audible and visual alarm 10 to work. The audible and visual alarm 10 emits an alarm signal to remind the user that a fire has occurred in this charging and swapping cabinet, so that the user can manually extinguish the fire or call the fire alarm number as soon as possible, etc.

[0042] As Figure 1 、 Figure 7 、 Figure 8 shown in the figure, a detachable fire water tank 11 is installed on the cabinet body 1. The fire water tank 11 is connected to the water supply pipe 7. The fire water tank 11 can be used to store fire water, so that this charging and swapping cabinet does not need to be externally connected to a water faucet, enabling it to be applicable to places without a fire water faucet, and improving the usage scenario of the charging and swapping cabinet.

[0043] Specifically, a plurality of hanging blocks 12 are provided on the outer side wall of the fire water tank 11. The hanging blocks 12 are used to install the fire water tank 11 on the cabinet body 1. During assembly, by installing screws on each hanging block 12 and screwing the screws into the cabinet body 1, the fire water tank 11 is fixedly hung on the installation position of the cabinet body 1, realizing the function of externally hanging the fire water tank 11 on the outside of the charging and swapping cabinet. Moreover, the fire water tank 11 can be detached from the charging and swapping cabinet by removing the screws. In this embodiment, the number of hanging blocks 12 is four, and the four hanging blocks 12 are symmetrically arranged in pairs on the left and right sides of the fire water tank 11. In other embodiments, the number of hanging blocks 12 can also be any other number.

[0044] The fire fighting water tank 11 is provided with a water storage cavity 111 and a control cavity 112. The water storage cavity 111 is used for storing fire fighting water. Inside the control cavity 112, there are a control board 13, a backup battery 14 and a water pump 15. The control board 13 is electrically connected to the controller 2. The control board 13 is fixedly installed on the inner side wall of the upper end of the control cavity 112 by screws. The backup battery 14 and the water pump 15 are respectively electrically connected to the control board 13. When the controller 2 receives a fire signal, it will send a fire signal to the control board 13. The control board 13 will control the backup battery 14 to supply power to the water pump 15, so that the water pump 15 can pump water.

[0045] An outlet pipe 16 is provided on the outer side wall of the control cavity 112. The output end of the water pump 15 is communicated with the outlet pipe 16. The other end of the outlet pipe 16 is respectively communicated with the water supply pipe 7. The input end of the water pump 15 is provided with an intake pipe 17. The intake pipe 17 extends into the water storage cavity 111, and the intake pipe 17 can extend to the inner side wall of the lower end of the water storage cavity 111, so as to ensure that the water pump 15 can pump out all the water in the water storage cavity 111. When a certain battery compartment 3 catches fire, the controller 2 will send a signal to the control board 13. The backup battery 14 supplies power to the control board 13 to control the water pump 15 to work. The water pump 15 pumps fire fighting water from the water storage cavity 111 through the intake pipe 17. The water flows through the intake pipe 17 into the water pump 15, then into the outlet pipe 16, and then into the water supply pipe 7, and is sprayed into the battery compartment 3 through the nozzle 5 to submerge the batteries in the battery compartment 3 for fire extinguishing, thus realizing the function of fire fighting.

[0046] To facilitate the maintenance of each component in the control cavity 112, a maintenance door 18 is provided on the control cavity 112. The maintenance door 18 is detachably connected to the fire fighting water tank 11 by screws. Usually, the maintenance door 18 is fixedly connected to the fire fighting water tank 11 by screws, so as to encapsulate the control board 13, the backup battery 14 and the water pump 15 in the control cavity 112, which can prevent rainwater, dust, etc. from entering the control cavity 112 and improve the service life. When a certain component in the control cavity 112 has a problem, the maintenance door 18 can be opened to replace and repair the corresponding component. By setting the maintenance door 18, it is convenient to repair and maintain the controller 2 components of the external fire fighting water tank 11, improving the practicability.

[0047] A water level detection switch 19 is provided in the water storage cavity 111. The water level detection switch 19 is electrically connected to the control board 13. The water level detection switch 19 is used to monitor the water volume in the water storage cavity 111. When the water level in the water storage cavity 111 is lower than the water level detection switch 19, the water level detection switch 19 will send a warning signal to the control board 13 to remind the user to add water to the water storage cavity 111 in time. The water level detection switch 19 can adopt any existing electrical device capable of detecting the water level height, and the present utility model does not limit this.

[0048] To facilitate the filling of water into the water storage cavity 111, a water filling port 113 is provided on the side wall of the water storage cavity 111. A water filling seal plug 20 is provided on the water filling port 113, and the water filling seal plug 20 is detachably connected to the water filling port 113. Under normal circumstances, the water filling seal plug 20 blocks the water filling port 113 to prevent dust and the like from entering the water storage cavity 111. When water needs to be filled, the water filling seal plug 20 is pulled out from the water filling port 113, and then an external water source is connected to the water filling port 113 to fill the water storage cavity 111. After the water filling is completed, the water filling seal plug 20 is plugged back into the water filling port 113.

[0049] A drain port 114 is provided on the lower side wall of the water storage cavity 111. A drain seal plug 21 is provided on the drain port 114, and the drain seal plug 21 is detachably connected to the drain port 114. Under normal circumstances, the drain seal plug 21 blocks the drain port 114, so that the water storage cavity 111 forms a sealed cavity, which is convenient for storing fire fighting water. After using for a period of time, the water in the water storage cavity 111 will inevitably become dirty. The drain seal plug 21 can be taken out to open the drain port 114, and the dirty water in the water storage cavity 111 will be discharged from the drain port 114. After the sewage discharge is completed, the drain seal plug 21 is plugged back into the drain port 114.

[0050] In this embodiment, each charging and swapping cabinet is equipped with a fire fighting water tank 11. In other embodiments, one fire fighting water tank 11 can also be used for multiple charging and swapping cabinets simultaneously, or multiple fire fighting water tanks 11 can be equipped on one charging and swapping cabinet. On the other hand, the fire fighting water tank 11 is an optional component. In some embodiments, there may also be no fire fighting water tank 11, and the water supply pipe 7 is directly connected to the fire fighting faucet.

[0051] As Figure 3 shown, a return pipe 22 is fixedly installed in the cabinet body 1. The return pipe 22 penetrates through all the battery compartments 3, and overflow ports 23 are respectively provided at the corresponding positions of the return pipe 22 and each battery compartment 3. The return pipe 22 is communicated with the water storage cavity 111. By setting the overflow ports 23, water can be saved. When the water level of the fire fighting water sprayed by the nozzle 5 in the battery compartment 3 reaches the position of the overflow port 23, the water will automatically flow into the overflow port 23, then into the return pipe 22, and then into the water storage cavity 111 for reuse. The installation height of the overflow port 23 in the battery compartment 3 needs to be higher than the height of the batteries in the battery compartment 3, so as to ensure that the fire fighting water sprayed by the nozzle 5 can completely immerse the burning batteries in the battery compartment 3, and realize the function of quickly cooling the batteries to prevent them from reigniting.

[0052] As Figure 8As shown in the figure, specifically, a return water pump 24 is fixedly installed in the control chamber 2 of the fire fighting water tank 11. The return water pump 24 is electrically connected to the control board 13. A return water pipe 25 is provided on the outer side wall of the control chamber 112. The output end of the return water pump 24 is communicated with the water storage chamber 111. The input end of the return water pump 24 is connected to the return water pipe 25, and the other end of the return water pipe 25 is connected to the return pipe 22. During use, the water flowing out from the return pipe 22 will flow into the return water pipe 25; by controlling the return water pump 24 to work through the control board 13, the water in the return water pipe 25 can be pumped into the water storage chamber 111, so that the excess water can flow back into the water storage chamber 111, enabling the water in the water storage chamber 111 to be recycled, extending the soaking time of the burning battery, avoiding the situation of the battery reigniting, and improving the safety.

[0053] As Figure 10 shown in the figure, a water collecting tank 101 is provided in the cabinet body 1. The lower ends of the return pipes 22 are respectively communicated with the water collecting tank 101. A water passing port 102 communicating with the return water pipe 25 is provided in the water collecting tank 101, and a filter net 26 is installed on the water passing port 102; because a lot of garbage will be generated after the battery catches fire and burns, the filter net 26 can prevent this garbage from entering the return water pump 24 and blocking the pump body, and at the same time can also prevent the garbage from entering the water storage chamber 111, thereby ensuring the cleanliness of the water quality in the water storage chamber 111 and improving the practicability.

[0054] By setting a return structure in the cabinet body 1 and installing a return water pump 24 in the fire fighting water tank 11, the fire fighting and extinguishing system can make the water in the water storage chamber 111 be reused, thereby extending the service life of the fire fighting water in the water storage chamber 111; so that when a fire occurs, the water in the water storage chamber 111 is sufficient to completely soak the burning battery in the battery compartment 3 and has sufficient soaking time, effectively avoiding the situation of the battery reigniting and greatly improving the fire extinguishing efficiency.

[0055] As Figure 3 shown in the figure, a thermo-aerosol fire extinguisher 27 is respectively provided at the top end of the inner wall of each battery compartment 3. The spray port of the thermo-aerosol fire extinguisher 27 is arranged towards the battery direction in the battery compartment 3, and the thermo-aerosol fire extinguisher 27 is connected to the controller 2. The thermo-aerosol fire extinguisher 27 is automatically triggered at high temperature. When the temperature in the battery compartment 3 reaches the threshold value, the thermo-aerosol fire extinguisher 27 will automatically work and spray thermo-aerosol to quickly extinguish the open fire in the battery compartment 3. By setting the thermo-aerosol fire extinguisher 27, the fire fighting and extinguishing system integrates two fire extinguishing methods, namely thermo-aerosol fire extinguishing and water fire extinguishing, greatly improving the safety of the charging and swapping cabinet.

[0056] The above specific embodiments are the preferred embodiments of the present utility model, and do not limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to this specific embodiment. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A fire extinguishing system for a charging and swapping cabinet, the charging and swapping cabinet including a cabinet body, wherein a controller and a plurality of battery compartments for placing batteries are arranged in the cabinet body, and an openable and closable compartment door is arranged on each battery compartment, and the system is characterized in that: The fire extinguishing system includes sprinklers arranged in each battery compartment. A water supply pipe is provided on the cabinet body. One end of the water supply pipe is respectively connected to the sprinklers, and the other end is externally connected to a water source. A fire detection device is arranged inside the cabinet body, and the fire detection device is electrically connected to the controller; A limiting member is fixedly arranged on the inner end face of the compartment door. Sealing rings are respectively arranged at the positions where the limiting member cooperates with the battery compartment. The sealing rings can be in sealing contact with the end face of the battery compartment. The sealing rings form a closed figure, and the sealing rings are inclined towards the center direction of the limiting member.

2. The fire extinguishing system for the charging and swapping cabinet according to claim 1, characterized in that: A plurality of positioning columns are arranged on the inner end face of the compartment door. Positioning holes are respectively arranged at the corresponding positions of the limiting member and the positioning columns. The positioning columns pass through the corresponding positioning holes. A limiting nut is arranged on each positioning column, and the limiting nut abuts against the limiting member.

3. The fire extinguishing system for the charging and swapping cabinet according to claim 1, characterized in that: A detachable fire water tank is provided on the cabinet body. A water storage cavity and a control cavity are arranged inside the fire water tank. The water storage cavity is used for storing fire water. A control board, a battery and a water pump are arranged inside the control cavity. The control board is electrically connected to the controller, and the battery and the water pump are respectively electrically connected to the control board; A water outlet pipe is arranged on the outer side wall of the control cavity. The output end of the water pump is connected to the water outlet pipe, and the other end of the water outlet pipe is connected to the water supply pipe. A water suction pipe is arranged at the input end of the water pump, and the water suction pipe extends into the water storage cavity.

4. The fire extinguishing system for the charging and swapping cabinet according to claim 3, wherein: A return pipe is arranged inside the cabinet body. The return pipe penetrates through all battery compartments, and overflow ports are respectively arranged at the corresponding positions of the return pipe and each battery compartment. The return pipe is connected to the water storage cavity.

5. The fire extinguishing system for the charging and swapping cabinet according to claim 4, wherein: A return water pump is arranged inside the control cavity. The return water pump is electrically connected to the control board. A return water pipe is arranged on the outer side wall of the control cavity. The output end of the return water pump is connected to the water storage cavity, and the input end of the return water pump is connected to the return water pipe. The other end of the return water pipe is connected to the return pipe.

6. The fire extinguishing system of the charging and swapping cabinet according to claim 5, characterized in that: A water collecting tank is arranged inside the cabinet body. The water collecting tank is respectively connected to the return pipe. A water passing port communicating with the return water pipe is arranged inside the water collecting tank, and a filter screen is arranged on the water passing port.

7. The fire extinguishing system of the charging and swapping cabinet according to claim 3, characterized in that: A water level detection switch is arranged inside the water storage cavity. The water level detection switch is electrically connected to the control board, and the water level detection switch is used for monitoring the water volume inside the water storage cavity.

8. The fire extinguishing system for the charging and swapping cabinet according to any one of claims 1-7, characterized in that: The fire detection device includes a smoke sensor arranged inside the cabinet body and temperature sensors respectively arranged at the top ends of the inner walls of each battery compartment. The smoke sensor and the temperature sensors are respectively electrically connected to the controller.

9. The fire extinguishing system of the charging and swapping cabinet according to claim 8, wherein: An audible and visual alarm is arranged at the upper end of the cabinet body. The audible and visual alarm is electrically connected to the controller.

10. The fire extinguishing system of the charging and swapping cabinet according to claim 8, wherein: Heat aerosol fire extinguishers are respectively arranged at the top ends of the inner walls of the battery compartments. The nozzles of the heat aerosol fire extinguishers are arranged towards the battery direction of the battery compartments, and the heat aerosol fire extinguishers are connected to the controller.

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