CN218961630U

CN218961630U - Fire extinguishing and fire fighting system of battery changing cabinet and cabinet body structure

Info

Publication number: CN218961630U
Application number: CN202222512771.1U
Authority: CN
Inventors: 杨磊; 钟洪亮
Original assignee: Shanghai Junzheng Network Technology Co Ltd
Current assignee: Shanghai Junzheng Network Technology Co Ltd
Priority date: 2021-12-08
Filing date: 2022-09-22
Publication date: 2023-05-05
Anticipated expiration: 2032-09-22

Abstract

The application discloses fire extinguishing system and cabinet body structure of trading electric cabinet relates to trading electric cabinet technical field. The fire detection unit is used for monitoring fire information in the battery bin and sending signals to the fire board; the fire control board is used for receiving the alarm signal and sending an instruction to enable the power equipment to work; the feeding unit is connected with the battery compartment through a fire tube assembly, the fire tube assembly comprises a discharging interface and a discharging opening, the discharging interface is used for enabling materials in the feeding unit to flow into the battery compartment, the discharging opening is used for enabling the materials in the battery compartment to flow to the feeding unit, and the battery compartment is of a sealed structure. According to the fire extinguishing and fire extinguishing system and the cabinet body structure of the battery changing cabinet, the fire extinguishing system can be triggered when the battery is found out of control, and the fire extinguishing to the battery can be started at the first time; the battery can be triggered to extinguish fire in all directions, and the thermal runaway of the battery is rapidly controlled.

Description

Fire extinguishing and fire fighting system of battery changing cabinet and cabinet body structure

Technical Field

The application relates to the technical field of power conversion cabinets, in particular to a fire extinguishing and fire extinguishing system and cabinet body structure of a power conversion cabinet.

Background

Along with popularization of the battery changing cabinet, the battery changing frequency is gradually increased, but the phenomenon of ignition of the lithium battery is easy to occur due to improper operation or environmental problems. At present, the battery fires are caused by thermal runaway, the internal temperature of the battery is extremely high in the early stage, the fire is extinguished by using a dry powder fire extinguisher or hot aerosol after conventional ignition, the open fire on the surface of the battery can only be extinguished, the battery core cannot be cooled, and the battery core can be reburnt because the temperature of the battery core is too high for a long time, so that water is required to be continuously cooled, lithium exists in the form of oxide or salt in the lithium ion battery, chemical reaction is not easy to occur when the lithium ion battery meets water, and therefore, high-pressure impact fire extinguishing is safe by using a large amount of water.

The hot aerosol or dry powder fire extinguisher is commonly used in the market, can only extinguish open fire, can not cool the battery, can only serve as a suppression effect, can reburn due to continuous rising of the temperature of the battery core for a long time, and can not fundamentally control thermal runaway of the battery to extinguish the fire. At present, although a part of the battery replacement cabinets are provided with a fire extinguishing and fire extinguishing system, only the batteries with thermal runaway fire are sprayed to extinguish the fire, so that the spraying water is lost, the fire of the batteries cannot be timely and rapidly controlled, or the spraying dead angle exists, and the batteries cannot be truly and comprehensively extinguished; in addition, the fire extinguishing time of the battery cannot be accurately controlled, the fire extinguishing time is long, and the damage to the whole cabinet after the fire extinguishing of the battery is large.

Disclosure of Invention

In order to solve at least one of the problems mentioned in the background art, the application provides a fire extinguishing system and a cabinet body structure of a battery changing cabinet, which can start triggering the fire extinguishing system when the battery is out of control, and start extinguishing the fire of the battery at the first time; the battery can be triggered to extinguish fire in all directions, and the thermal runaway of the battery is rapidly controlled.

The specific technical scheme provided by the application is as follows:

this application has put forward a fire extinguishing system who trades electric cabinet on the one hand, includes:

the fire detection unit is in communication connection with the fire board, and is arranged in each battery compartment and used for monitoring fire information in the battery compartment and sending signals to the fire board; the battery compartment is used for placing a battery assembly;

the fire control board is connected with the fire detection unit and is used for receiving signals sent by the fire detection unit;

a feeding unit for storing fluid materials; the feeding unit is connected with the battery assembly through a fire tube assembly, the fire tube assembly comprises a discharging interface and a discharging opening, the discharging interface is positioned in the battery assembly, the discharging interface is used for enabling materials in the feeding unit to flow into the battery assembly, and the discharging opening is used for enabling the materials in the battery assembly to flow to the feeding unit;

the battery compartment is of a sealed structure.

Optionally, the method further comprises: the power equipment is connected with the fire-fighting pipe assemblies and the fire-fighting boards and is used for extracting materials in the feeding unit to the discharge interface of each battery assembly through the fire-fighting pipe assemblies; and/or, the fire tube assembly is of a circulating structure.

Optionally, a power supply unit is connected with the fire-fighting board and the power equipment, and is used for supplying power to the fire-fighting board and the power equipment;

and/or the power supply unit is connected with the mains supply so that the mains supply charges the power supply unit;

and/or the fire-fighting board is connected with the mains supply, so that the mains supply supplies power for the fire-fighting board.

Optionally, the fire detection unit comprises a smoke sensor and/or a temperature sensor;

the smoke sensors are arranged in each battery compartment and are used for sensing smoke conditions in the battery compartments; or the smoke sensor is arranged at the top of the cabinet body and is used for sensing the smoke condition in the cabinet body;

the temperature sensors are arranged in each battery compartment and are used for sensing the temperature conditions in the battery compartments;

and/or, the temperature sensor comprises: NTC temperature sensor or infrared sensor.

Optionally, a fire-fighting pipeline, an electromagnetic valve and a fire-fighting nozzle are arranged on the battery component,

the electromagnetic valve is connected with the fire-fighting board and is used for starting the fire-fighting pipeline after receiving an instruction sent by the fire-fighting board; the fire control spray head is communicated with the discharging interface through the fire control pipeline and the electromagnetic valve;

and/or, the fire sprinkler head comprises: the fire-fighting device comprises a fire-fighting first nozzle and/or a fire-fighting second nozzle, wherein one end of the fire-fighting first nozzle is communicated with the discharging interface, and a glass ball is arranged at the other end of the fire-fighting first nozzle; the fire-fighting second spray head is communicated with the discharging interface through the fire-fighting pipeline and the electromagnetic valve;

and/or the battery assembly is provided with a first material level sensor, and the first material level sensor is connected with the fire-fighting board and is used for sensing the material level condition in the battery assembly and sending a material level signal to the fire-fighting board.

Optionally, the fire control system further comprises a main control board, wherein the main control board is connected with the fire control board and is used for reporting to the server after receiving the alarm signal sent by the fire control board.

Optionally, a second material level sensor is arranged in the feeding unit and is connected with the main control board, so as to sense the material level condition in the feeding unit and send a material level signal to the main control board;

and/or a third material level sensor is arranged in the cabinet body of the battery changing cabinet and is connected with the main control board, so as to be used for sensing whether the cabinet body is soaked or not and sending a material level signal to the main control board.

Optionally, the method further comprises: and the alarm is connected with the fire-fighting board and is used for alarming after receiving the alarm signal sent by the fire-fighting board.

The utility model provides a still provides a cabinet body structure of trading electric cabinet on the other hand, including cabinet body main part, cabinet body main part is equipped with the fire extinguishing system of trading electric cabinet, cabinet body main part is equipped with a plurality of battery compartment.

Optionally, a sealing strip is arranged between the door of the battery compartment and the cabinet body, so that a sealed cavity is formed when the door of the battery compartment is closed.

The utility model provides a pair of fire extinguishing system and cabinet body structure of trading electric cabinet, through under the detection of condition of a fire detecting element, judge and trade whether the condition of a fire takes place for electric cabinet to control feeding unit work, annotate the material in to the battery pack, in order to realize fire extinguishing, can trigger fire extinguishing system immediately to the battery at the first time that the battery produced thermal runaway and put out a fire, can furthest's safe cabinet body asset and battery asset.

The utility model provides a fire extinguishing system and cabinet body structure of trading electric cabinet, its fire control pipe subassembly is cyclic design, and battery pack is sealed design for fire control water can form the circulation between the battery pack of feed unit and emergence condition of a fire, makes the fire control material can submerge the battery in the battery pack of emergence condition of a fire completely, thereby improves the efficiency of fire control of putting out a fire, realizes the omnidirectional fire extinguishing of battery in the true sense.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic connection diagram of a fire extinguishing and fire extinguishing system of a power conversion cabinet according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cabinet body structure of a power conversion cabinet according to another embodiment of the present application;

fig. 3 is a schematic diagram of a cabinet body structure of a power conversion cabinet and a fire extinguishing and fire extinguishing system according to another embodiment of the present application;

fig. 4 is a schematic structural view of a battery assembly according to still another embodiment of the present application;

fig. 5 is a schematic structural diagram of a fire extinguishing and fire extinguishing system of a power conversion cabinet according to another embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

As shown in fig. 1 to 5, the fire extinguishing and fire extinguishing system of a power conversion cabinet provided in an embodiment of the present application may be used on a power conversion cabinet, where the power conversion cabinet includes a plurality of battery bins 2, the battery bins 2 are used for placing a battery assembly 40, and the battery assembly 40 includes a battery (not shown in the drawing). Generally, in one embodiment, a fire extinguishing and fire extinguishing system of a power changing cabinet may be provided, which may include a fire detection unit, a fire panel 20, and a feeding unit 3. The fire detection units are in communication connection with the fire board 3, are arranged in each battery compartment 2 and are used for monitoring fire information in the battery compartments 2 and sending signals to the fire board 20; the battery compartment 2 is used for placing a battery assembly 40; the fire board 20 is connected with the fire detection unit and is used for receiving signals sent by the fire detection unit; the feeding unit 3 is connected with the battery assembly 40 through the fire tube assembly 4, and the fire tube assembly 4 comprises a discharge port 41 and a discharge port 42 which are positioned in the battery compartment 2. The discharge port 41 is used for the material in the feeding unit 3 to flow into the battery compartment 2. The discharge opening 42 is used for flowing the material in the battery compartment 2 to the feeding unit 3; wherein, battery compartment 2 is sealed structure.

In one embodiment, the fluid materials used for fire suppression referred to above include, but are not limited to, water, liquid nitrogen, inert gases, and the like.

In one embodiment, the feeding unit 3 includes, but is not limited to, a water tank, a liquid nitrogen bottle, an inert gas container, etc., which are used for storing fluid materials such as water, liquid nitrogen, inert gas, etc., respectively.

In another embodiment, the method further comprises: the power equipment is connected with the fire-fighting pipe assemblies 4 and the fire-fighting boards 20, and is used for extracting materials in the feeding units 3 (such as water tanks and the like) to the discharge interfaces 41 on each battery assembly 40 through the fire-fighting pipe assemblies 4. Wherein the power plant includes, but is not limited to, a pump or the like.

Optionally, a power supply unit 30 is further included, and the power supply unit 30 is connected to the fire deck 20 and the power equipment 202 for supplying power to the fire deck 20 and the power equipment 202. The power supply unit 30 is configured to: when a fire occurs, the power supply unit 30 receives an instruction sent by the fire panel 20 and supplies power to the power equipment 202, so that the power equipment 202 starts to work. When a fire occurs, materials can enter the battery bin 2 from the feeding unit 3 through the fire-fighting pipe assembly 4 under the action of the power equipment 202, the batteries in the battery assembly 40 are submerged to realize fire extinguishment, and then the materials return to the feeding unit 3 through the fire-fighting pipe assembly 4 through the discharge hole 42 to realize material circulation; namely, in the embodiment, the fire-fighting pipe assembly is of a circulating structure, and the circulating material can be used for extinguishing fire without interruption.

In one embodiment, the fire detection unit may include either one of the smoke sensor 203 and the temperature sensor 204, or both the smoke sensor 203 and the temperature sensor 204. For example: a smoke sensor 203 is provided in the battery compartment 2 of each battery change cabinet. The smoke sensor 203 is used for sensing smoke conditions in the battery compartment 2 of the battery exchange cabinet and sending smoke alarm signals to the fire board 20 when a fire occurs. In a specific embodiment, a smoke sensor 203 may be provided in each battery compartment 2 for sensing smoke conditions in the battery compartment 2, or the smoke sensor 203 may be provided separately on top of the cabinet body of the battery exchange cabinet for sensing smoke conditions in the cabinet. A temperature sensor 204 is disposed in the battery compartment 2 of each battery change cabinet. The temperature sensor 204 is used for sensing the temperature condition in the battery compartment 2 of the battery exchange cabinet and sending a temperature alarm signal to the fire board 20 when a fire occurs. Alternatively, the temperature sensor 204 may be an NTC temperature sensor (Negative Temperature Coefficient Sensor in English) or an infrared sensor. The NTC temperature sensor generally consists of an NTC thermistor, a probe (a metal shell or a plastic shell and the like), an extension lead wire, a metal terminal or an end connector, and the principle is as follows: the corresponding temperature is determined by measuring the resistance value of the NTC thermistor according to the characteristic that the resistance value rapidly decreases along with the temperature rise under certain measuring power, so that the temperature is detected and controlled. The fire-fighting board 20 is connected with the smoke sensor 203, the temperature sensor 204 and the main control board 10. When the smoke sensor 203 and the temperature sensor 204 are simultaneously provided, the accuracy of fire monitoring can be remarkably increased, and the time for detecting the fire is earlier than that for detecting the fire by a single sensor, which is beneficial to finding the fire at the first time. The fire deck 20 is configured to receive signals from the fire detection unit and send commands to operate the power plant 202. For example, a smoke alarm signal sent by the smoke sensor 203 and a temperature alarm signal sent by the temperature sensor 204 are received, and an instruction is sent to operate the power device 202.

In another embodiment, a fire extinguishing and fire extinguishing system of the power exchange cabinet is further provided, whether the power exchange cabinet generates fire or not is judged under the detection of the fire detection unit, and the power equipment 202 is directly controlled to work, so that the fire extinguishing and fire extinguishing can be realized, the fire extinguishing system can be triggered to extinguish the fire of the battery immediately at the first time when the battery generates thermal runaway, the cabinet body assets and the battery assets can be protected to the greatest extent, the fire pipe assembly 4 is of a circulating design, the battery bin 2 is of a sealing design, so that the fire-extinguishing material can circulate between the feeding unit 3 and the battery bin 2 generating the fire, the fire-extinguishing material can completely submerge the battery in the battery assembly 40 generating the fire, the fire extinguishing and fire extinguishing efficiency is improved, and the fire extinguishing to the battery in a true sense is realized.

It should be noted that in another embodiment, the fire deck 20 thereof may be connected to a utility (e.g., 220V utility) such that the utility provides power to the fire deck 20. The power supply unit 30 is also connected to the mains such that the mains charges the power supply unit 30. The fire deck 20 is configured to: when a fire occurs, the fire deck 20 issues a command to cut off the mains supply. Optionally, the fire deck 20 remains normally on (i.e., remains energized at all times) with the utility power, the power supply unit 30 also remains normally on (i.e., remains energized at all times) with the utility power, and the fire deck 20 issues instructions to shut off the utility power only when a fire occurs, and the power supply unit 30 also disconnects from the utility power, at which time the power supply unit 30 continues to supply power to the fire deck 20 and the power plant 202. That is, the power supply unit 30 is always electrically available, which can be connected to the mains through the transformer. Before the fire is not started, the mains supply always supplies power to the power supply unit 30 through the charger.

As shown in fig. 3-5, the battery assembly 40 is provided with a fire line 43, a solenoid valve 44, and a fire sprinkler 45. The electromagnetic valve 44 is connected with the fire-fighting board 20, and the fire-fighting pipeline 43 is connected with the discharge port 41. The fire sprinklers 45 include a fire-fighting first sprinkler 451 and a fire-fighting second sprinkler 452. Wherein, one end of fire control first shower nozzle 451 communicates with ejection of compact interface 41, and the other end is provided with the glass ball. The glass ball can burst under the firing of the fire in the battery bin 2, and the material is sprayed out from the fire-fighting spray head 451 to extinguish the fire in the battery bin 2, so that the fire can be extinguished. The fire-fighting second nozzle 452 is in communication with the discharge port 41 via the fire-fighting line 43 and the solenoid valve 44. The solenoid valve 44 can control the on-off function of the material path. When solenoid valve 44 receives the command sent by fire deck 20, fire line 43 is opened so that fire fighting material enters battery assembly 40 via solenoid valve 44.

Further, the battery assembly 40 is also provided with a first level sensor 46. The first level sensor 46 is connected to the fire deck 20. The first level sensor 46 is used to sense the level condition in the battery compartment 2 and send a level signal to the fire deck 20.

Optionally, a second level sensor 31 is provided in the feed unit 3. The second level sensor 31 is connected with the main control board 10 for sensing the level condition in the feeding unit 3 and sending a level signal to the main control board 10. When the material level in the feeding unit 3 is low, the main control board 10 can report to the server 50, and the background informs the operation and maintenance personnel to supplement the material to the feeding unit 3. Optionally, the second level sensor 31 is placed in an upper part of the interior of the feeding unit 3. Optionally, a third level sensor 32 is arranged inside the cabinet body of the battery changing cabinet. The third level sensor 32 is connected with the main control board 10, and is used for detecting whether the cabinet body is immersed by external materials or not, and sending a level signal to the main control board 10. When the external materials are immersed in the third material level sensor 32 at the lower position in the cabinet body, the main control board 10 can report the server 50, then cut off the mains supply, ensure the safety of the cabinet body and prevent electric shock.

Specifically, as shown in fig. 4, the battery assembly 40 includes; the first fire-fighting nozzle 451, the second fire-fighting nozzle 452, the three-way pipe 47, the fire-fighting pipeline 43, the electromagnetic valve 44, the temperature sensor 204, the discharge port 42 and the like, and the battery assembly 40 forms a modularized assembly of a battery compartment, and is installed in the battery compartment 2 of the cabinet body 1. One end of the three-way pipe 47 is connected with the electromagnetic valve 44, and then is connected with the second fire-fighting nozzle 452, so that a direct-injection fire-fighting passage is realized. The other end of the three-way pipe 47 is communicated with the first fire-fighting nozzle 451 through a fire-fighting pipeline 43, and a fire-fighting passage triggered in a glass bead manner is realized through the structure of the end glass ball. The last end of tee 47 is connected to fire tube 43 and to discharge port 41 of fire tube assembly 4. The fire-fighting pipe assembly 4, the fire-fighting pipeline 43, the fire-fighting first nozzle 451, the fire-fighting second nozzle 452 and the electromagnetic valve 44 can be connected in a threaded connection mode.

When the battery assembly 40 is assembled to the cabinet main body 1, the sealing member 22 is provided in the middle. The sealing member 22 is used for sealing the battery compartment 2 and the cabinet body, and meanwhile, the sealing member 22 is also arranged on the compartment door 21, when the compartment door 21 is closed, the whole battery assembly 40 is in a sealing state, namely, when materials are poured into the battery compartment 2 for fire extinguishment, the battery compartment 2 can store the materials to completely submerge and soak the batteries, and meanwhile, redundant materials can flow back to the feeding unit 3 from the discharge hole 42 of the material collecting box.

As shown in fig. 5, the material path architecture of the fire extinguishing and fire extinguishing system comprises a feeding unit 3, a power device 202 and a fire fighting pipe assembly 4. Wherein the feeding unit 3 has the function of storing and extinguishing fluid materials, is placed at the bottom of the cabinet body 1, and a material storage port is arranged in the middle of the feeding unit 3 at a lower position for connecting the fire-fighting pipe assembly 4 and then connecting to the material inlet port of the power equipment 202, the material outlet of the power equipment 202 is connected with the fire-fighting pipe assembly 4, the fire-fighting pipe assembly 4 respectively branches into branch pipes towards the position of the battery compartment 2 of each layer, and a material outlet port 41 is arranged on each branch pipe (if the number of layers and the number of columns of the battery compartment 2 are increased in the cabinet body design, the material outlet ports 41 on the branch pipes and the branch pipes are synchronously increased). The discharge ports 41 are respectively connected with fire-fighting pipelines 43 of the battery assemblies 40 of each layer, so that a complete fire-fighting material path system is formed. After the battery assembly 40 is mounted on the cabinet body 1, the discharging port 42 of the battery assembly 40 is uniformly connected to the feeding unit 3 for fixing, and a complete closed loop is formed from the feeding unit 3 to the battery bin 2 and then to the feeding unit 3, so that the material recovery function of the battery bin 2 is achieved.

Optionally, as shown in fig. 1, another embodiment further provides a fire extinguishing and fire extinguishing system of the power exchange cabinet, and further includes a main control board 10. The main control board 10 is connected with the fire control board 20. The main control board 10 is used for reporting to the server 50 after receiving the alarm signal sent by the fire control board 20. In an alternative embodiment, the fire panel 20 is connected to the main control panel 10 in a unidirectional manner, i.e., the fire panel 20 transmits signals to the main control panel 10, and the main control panel 10 does not need to transmit signals or instructions to the fire panel 20. The main control board 10 is used for receiving information feedback of the fire control board 20 and controlling other operation functions of the cabinet body, and is also used for reporting information of the server 50. Alternatively, the functions of the main control board 10 and the fire board 20 are two independent systems. The main control board 10 is connected with the fire control board 20 and the power supply unit 30 so that the power supply unit 30 can supply power to the main control board 10 and the fire control board 20.

In an alternative embodiment, the fire deck 20 is electrically connected to the battery in the battery pack 40 in each battery compartment 2, so that when the power supply unit 30 fails, the battery in the battery pack 40 can supply power to the fire deck 20, avoiding the occurrence of fire fighting failure caused by the failure of the power supply unit 30.

Optionally, the fire extinguishing and fire extinguishing system of the battery changing cabinet further comprises an alarm 205. The alarm 205 is connected with the fire-fighting board 20, and the alarm 205 is used for alarming after receiving the alarm signal sent by the fire-fighting board 20. By the alarm of the alarm 205, other people can be quickly warned or informed of fire, and manual intervention is facilitated.

The application provides a trade fire extinguishing system of electric cabinet, during operation, can adopt multiple mode.

Active fire extinguishing mode: when the smoke sensor 203 detects that smoke in the cabinet exceeds a set threshold, the temperature sensor 204 monitors whether the temperature in any battery compartment 2 exceeds a set maximum threshold. If one of the two is not satisfied, the fire-fighting fire extinguishing system is not started; when the set threshold values of the two are reached, the fire control board 20 is reported, the fire control board 20 sends a signal to the main control board 10, the main control board 10 cuts off the power supply of the whole cabinet, and the main control board 10 reports information to the server 50. The power supply unit 30 is automatically started when the whole cabinet is powered off, and the power supply unit 30 supplies power to the main control board 10 and the fire-fighting board 20 respectively. The synchronous fire deck 20 issues instructions to the power plant 202, the alarm 205, and the solenoid valve 44, respectively. The alarm 205 works to warn staff and the electric cabinet fires; the solenoid valve 44 is opened (closed state in the case of no operation), and at the same time, the power device 202 is operated to communicate the material of the feeding unit 3 to the fire-fighting pipeline 43 and the fire-fighting second nozzle 452 of the battery assembly 40 through the fire-fighting pipe assembly 4, and to pump the material into the battery compartment where thermal runaway (fire) occurs, thereby extinguishing the fire of the battery. Because the battery compartment is a closed environment, the materials of the feeding unit 3 are continuously collected in the battery compartment 2, so that the submerged batteries are soaked, and redundant materials are recovered to the feeding unit 3 through the discharge opening 42 on the side surface of the material collection box of the battery compartment 2, so that the cyclic fire extinguishing can be continuously performed.

Passive fire extinguishing mode: when the smoke sensor 203 fails and the smoke generated by the battery thermal runaway fire cannot be monitored, the temperature sensor 204 in the battery compartment 2 in which the thermal runaway occurs detects that the maximum value of the threshold value is continuously abnormal. The fire control board 20 is reported, the fire control board 20 sends a signal to the main control board 10, the main control board 10 cuts off the power supply of the whole cabinet, the main control board 10 reports information to the server 50, the power supply unit 30 is automatically started when the whole cabinet is powered off, and the power supply unit 30 supplies power to the main control board 10 and the fire control board 20 respectively. Meanwhile, the fire control board 20 respectively sends instructions to the power equipment 202 and the alarm 205 to work so as to warn the staff of the fire of the electric cabinet; meanwhile, the power equipment 202 works, materials of the feeding unit 3 are pumped to the first fire-fighting nozzle 451 through the fire-fighting pipe assembly 4, the first fire-fighting nozzle 451 is in a high-temperature glass bead breaking mode, when the temperature in the battery compartment with thermal runaway reaches the glass bead breaking temperature of the first fire-fighting nozzle 451, the glass beads are broken, and the materials are sprayed to the battery compartment 2 from the first fire-fighting nozzle 451; the fire is extinguished in the battery. Because the battery bin 2 is a closed environment, the materials of the feeding unit 3 are continuously collected in the battery bin 2, so that the submerged batteries are soaked, and redundant materials are recovered to the feeding unit 3 through the discharge port 42 on the side surface of the material collection box of the battery bin 2, so that the cyclic fire extinguishing can be continuously performed.

When the power supply unit 30 fails or fails, the power supply of the battery compartment 2 is a bi-directional input/output power supply, the power supply is connected with the main control board 10, once a fire alarm occurs, the main control board 10 issues a command to the power supply of the battery assembly 40 which has no thermal runaway and has a battery in the battery compartment 2, and the power supply is reversely supplied to the main control board 10 and the fire fighting board 20, so that another standby power supply mode is achieved.

Preferably, in order to accurately control the start and stop of the power device 202 during fire extinguishing, thereby achieving the premise of saving electricity for the power supply unit 30, a first level sensor 46 may be additionally installed in each battery assembly 40. When the material in the battery compartment 2 with thermal runaway is fully collected to the working position of the first material level sensor 46, reporting the material to the fire fighting board 20, and turning off the power supply of the power equipment 202 by the power supply unit 30; when the material level in the battery compartment 2 is lower than the detection position of the first material level sensor 46, the power equipment 202 is restarted to work, and the material is continuously injected into the battery compartment 2.

The application also provides a cabinet body structure of the battery changing cabinet, as shown in fig. 2. The cabinet body structure of the battery changing cabinet comprises a cabinet body main body 1 and at least one battery compartment 2. The cabinet body 1 is provided with a fire extinguishing and fire fighting system of the battery changing cabinet. The battery compartment 2 is used for accommodating a battery assembly 40. The battery assembly 40 includes a battery therein. A sealing strip 22 is arranged between the bin door 21 of the battery bin 2 and the cabinet body 1, so that a sealed cavity is formed when the bin door 21 of the battery bin 2 is closed.

Preferably, the cabinet body 1 is also provided with a display screen for man-machine interaction and daily information interface display. When other abnormal problems occur in the cabinet body 1, operation and maintenance personnel can directly cut off the power supply of the whole cabinet through the emergency stop switch on the side face, and heat insulation cotton is stuck inside the cabinet body for the heat insulation of the cabinet body, an air outlet on the side face of the top is used for internal heat dissipation and air exhaust, and an air channel of the cabinet body is formed with an air inlet on the side face, so that air is convection.

Optionally, a damper device is arranged on the side surface of the cabinet body 1 for air intake. The cabinet body bottom is equipped with heating module, when detecting that the temperature in the cabinet is less than the threshold value of settlement, starts heating module and heats in the cabinet, and main control board 10 issue simultaneously and instruct to close the air inlet to reach cabinet body heat preservation performance.

The application provides a fire extinguishing and fire extinguishing system and a cabinet body structure of a battery replacement cabinet, which can start triggering the fire extinguishing system when the battery is found out of heat, and can start to extinguish the fire of the battery at the first time; the battery can be triggered to extinguish fire in all directions, and the thermal runaway of the battery is rapidly controlled.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted to embrace the preferred embodiments and all such variations and modifications as fall within the scope of the embodiments herein.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A fire suppression and fire protection system for a power conversion cabinet, comprising:

the fire control board is connected with the fire detection unit and is used for receiving signals sent by the fire detection unit; and

a supply unit for storing a fluid material for extinguishing a fire; the feeding unit is connected with the battery assembly through a fire tube assembly, the fire tube assembly comprises a discharging interface and a discharging opening, the discharging interface is positioned in the battery assembly, the discharging interface is used for enabling materials in the feeding unit to flow into the battery assembly, and the discharging opening is used for enabling the materials in the battery assembly to flow to the feeding unit;

wherein, the battery compartment is sealed structure.

2. The fire suppression and fire protection system for a power conversion cabinet of claim 1, further comprising: the power equipment is connected with the fire-fighting pipe assemblies and the fire-fighting boards and is used for extracting materials in the feeding unit to the discharge interface of each battery assembly through the fire-fighting pipe assemblies; and/or, the fire tube assembly is of a circulating structure.

3. The fire suppression and fire protection system of a power conversion cabinet of claim 2, further comprising: the power supply unit is connected with the fire fighting board and the power equipment and is used for supplying power to the fire fighting board and the power equipment;

4. The fire suppression and fire protection system of a power conversion cabinet according to claim 1, wherein the fire detection unit comprises a smoke sensor and/or a temperature sensor;

5. The fire extinguishing and fire extinguishing system of the battery changing cabinet according to any one of the claims 1 to 4, wherein a fire extinguishing pipeline, an electromagnetic valve and a fire extinguishing nozzle are arranged on the battery assembly,

6. The fire suppression and fire fighting system of a battery pack according to any one of claims 1 to 4, further comprising a main control board connected to the fire control board for reporting to a server after receiving an alarm signal sent by the fire control board.

7. The fire extinguishing and fire extinguishing system of a battery changing cabinet according to any one of claims 1 to 4, wherein a second material level sensor is arranged in the feeding unit, and the second material level sensor is connected with a main control board and is used for sensing the material level condition in the feeding unit and sending a material level signal to the main control board;

8. The fire suppression and fire protection system for a power conversion cabinet according to any one of claims 1 to 4, further comprising: and the alarm is connected with the fire-fighting board and is used for alarming after receiving the alarm signal sent by the fire-fighting board.

9. A cabinet structure of a power conversion cabinet, comprising a cabinet body, wherein the cabinet body is provided with a fire extinguishing and fire extinguishing system of the power conversion cabinet according to any one of claims 1-8, and the cabinet body is provided with a plurality of battery bins.

10. The cabinet body structure of the battery changing cabinet according to claim 9, wherein a sealing strip is arranged between the door of the battery compartment and the cabinet body main body, so that a sealed cavity is formed when the door of the battery compartment is closed.