CN117899402B - Battery compartment, battery compartment fire control system and method - Google Patents
Battery compartment, battery compartment fire control system and method Download PDFInfo
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- CN117899402B CN117899402B CN202410316630.3A CN202410316630A CN117899402B CN 117899402 B CN117899402 B CN 117899402B CN 202410316630 A CN202410316630 A CN 202410316630A CN 117899402 B CN117899402 B CN 117899402B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000004146 energy storage Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 238000004880 explosion Methods 0.000 claims description 27
- 238000013022 venting Methods 0.000 claims description 27
- 239000007921 spray Substances 0.000 claims description 24
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 230000002265 prevention Effects 0.000 abstract description 12
- 238000005507 spraying Methods 0.000 abstract description 11
- 230000001419 dependent effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 27
- 239000000779 smoke Substances 0.000 description 8
- 230000001960 triggered effect Effects 0.000 description 8
- 239000003814 drug Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery compartment, a battery compartment fire control system and a method, wherein the battery compartment fire control system comprises a fire probe assembly, a fire extinguishing assembly and a control center; the fire detection tube assembly comprises a pressurized cabin-level fire detection tube; the fire extinguishing assembly comprises a pressure sensing part and a heating part, wherein the pressure sensing part is arranged in the cabin-level fire probe tube and used for controlling the spraying of the fire extinguishing agent, the cabin-level fire probe tube is arranged in the battery cabin, and the heating part is in heat transfer connection with the cabin-level fire probe tube; the control center is used for controlling the operation of the heating part and enabling the cabin-level fire probe tube to be heated and damaged. According to the invention, the pressure sensing part for controlling the opening of the fire extinguishing assembly is arranged in the cabin-level fire detecting tube, and the cabin-level fire detecting tube is damaged when heated to reach the alarm threshold value, so that the pressure relief is captured by the pressure sensing part, the fire extinguishing agent is further controlled to be sprayed and extinguished, the fire safety prevention and control of the battery cabin can be realized in the power failure states of system power failure overhaul and the like, and the fire control system of the energy storage battery cabin is prevented from being singly dependent on electric control.
Description
Technical Field
The invention relates to the field of fire safety, in particular to a battery compartment, a battery compartment fire control system and a battery compartment fire control method.
Background
Along with popularization and application of new energy sources such as solar energy, wind energy and the like, the energy storage technology is also developed, and the lithium battery gradually becomes a main stream product for energy storage because of the advantages of high energy ratio, environmental protection, no water consumption basically in production and the like. However, the charge-discharge cycle life and the safety of the lithium ion battery are greatly affected by temperature, when the temperature of the battery core is too high or the temperature difference is large, the cycle life of the battery core can be greatly reduced, the service life of an energy storage product is influenced, when the service life of the battery core is serious, the battery core can be caused to generate thermal runaway, a large amount of combustible gas is generated, when the content of the combustible gas reaches a certain concentration, slight sparks are very easy to explode, and the important loss of personnel and property is caused, so that the lithium ion battery is extremely important for fire control of an energy storage system.
The existing energy storage fire control system is characterized in that an alarm or single emergency start-stop button of any two devices including a smoke detector, a temperature detector and a combustible gas detector is used as a starting condition of gas spraying, and fire extinguishing agents are directly sprayed to perform battery pack-level and battery cabin-level gas fire extinguishing after 0-30 seconds, but the system has the following defects:
(1) Most of the existing energy storage fire control systems are provided with two-stage protection battery pack stages and battery cabin stages, two different fire extinguishing assemblies are adopted to respectively control fire disasters in different areas (the battery pack stages and the cabin stages), and the cost is increased.
(2) When the power failure is stopped under working conditions such as power failure overhaul, the fire control system completely depends on electric control and cannot play a role in fire control prevention and control.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the battery compartment, the battery compartment fire control system and the method are provided, and the problem that the battery compartment fire control prevention and control mode unilaterally depends on electric control is solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a battery compartment fire control system comprises a fire probe assembly, a fire extinguishing assembly and a control center;
the fire detection tube assembly comprises a pressurized cabin-level fire detection tube, and the cabin-level fire detection tube is arranged in the battery cabin;
The fire extinguishing assembly comprises a heating part and a pressure sensing part for controlling fire extinguishing agent to spray, the pressure sensing part is arranged inside the cabin-level fire probe tube, and the heating part is in heat transfer connection with the cabin-level fire probe tube;
the control center is in control connection with the heating part to control the heating part to heat and actively trigger the heated breakage of the cabin-level fire probe tube.
In order to solve the technical problems, the invention adopts other technical schemes as follows:
The battery compartment comprises at least one battery pack arranged in the battery compartment and a battery compartment fire control system, wherein the battery pack comprises at least two electric cores arranged according to a preset array and a pressure release part communicated with the battery compartment; the fire detection tube assembly further comprises a pressurized package-level fire detection tube, and the package-level fire detection tube is arranged between the electric cores according to preset intervals.
In order to solve the technical problems, the invention adopts other technical schemes as follows:
A battery compartment fire control method is applied to the battery compartment fire control system or the battery compartment, and comprises the following steps:
the control cabin-level sensing assembly and the package-level sensing assembly respectively monitor the battery cabin and the battery package in real time;
When any two or more sensors in the cabin-level sensing assembly reach a first preset triggering condition or any two or more package-level sensing assemblies in the same battery package reach a second preset triggering condition, the heating part of the fire extinguishing assembly is controlled to operate, and the cabin-level fire probe tube is heated and damaged.
The invention has the beneficial effects that: the pressure sensing part for controlling the opening of the fire extinguishing assembly is arranged in the cabin-level fire detecting tube, and the cabin-level fire detecting tube is damaged when being heated to reach an alarm threshold value, so that pressure release is captured by the pressure sensing part, and further, the fire extinguishing agent is controlled to spray and extinguish fire;
Meanwhile, the heating part of the fire extinguishing assembly is in heat transfer connection with the cabin-level fire detecting tube, when a control center captures a fire, the cabin-level fire detecting tube is broken in an electric heating mode, so that the fire extinguishing assembly is controlled to spray a fire extinguishing agent to extinguish the fire, and the fire is prevented and controlled in an electric control mode and a temperature control mode by combining the characteristics of the fire detecting tube;
in addition, a package-level fire detection tube is arranged between the battery cells in the battery pack, when the battery cells are out of control, the package-level fire detection tube is heated and damaged, and internal high-pressure gas is released, so that the pressure release part of the battery pack is forced to be opened, the high-pressure gas in the battery pack is diffused into the battery compartment, after being captured by the control center, the fire extinguishing agent is controlled to spray and extinguish fire according to the description, two-stage fire control in the battery compartment and the battery pack is realized by using one set of fire extinguishing assembly, and the fire control and control cost is saved.
Drawings
FIG. 1 is a schematic diagram of a battery compartment and a battery compartment fire control system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a fire tube arrangement in a battery pack of a battery compartment according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a packet-level fire probe according to an embodiment of the present invention.
Description of the reference numerals:
1. a battery management system; 2. a fire suppression assembly; 3. a deflation alarm device;
4. an emergency start-stop button; 5. an under-pressure device of the fire extinguishing component; 6. a heating section;
7. A fire suppressant conduit; 8. a temperature sensing detector; 9. a smoke detector;
10. a combustible gas detector; 11. cabin-level fire probe tube; 12. a one-way valve;
13. battery pack-level spool sprayer; 14. a battery cluster level connection line; 15. a quick-connect joint;
16. quickly connecting a metal pipe; 17. a pressure relief port; 18. explosion venting assembly;
19. cabin-level mechanical pressure relief opening; 20. a packet level sensing assembly;
21. a fire probe action feedback device; 22. a fire extinguishing agent spraying feedback device;
23. And (5) packaging the fire probe tube.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 3, a battery compartment fire control system includes a fire detection tube assembly, a fire extinguishing assembly and a control center;
the fire detection tube assembly comprises a pressurized cabin-level fire detection tube, and the cabin-level fire detection tube is arranged in the battery cabin;
The fire extinguishing assembly comprises a heating part and a pressure sensing part for controlling fire extinguishing agent to spray, the pressure sensing part is arranged inside the cabin-level fire probe tube, and the heating part is in heat transfer connection with the cabin-level fire probe tube;
the control center is in control connection with the heating part to control the heating part to heat and actively trigger the heated breakage of the cabin-level fire probe tube.
From the above description, the beneficial effects of the invention are as follows: the pressure sensing part for controlling the opening of the fire extinguishing assembly is arranged in the cabin-level fire detecting tube, and the cabin-level fire detecting tube is damaged when being heated to reach an alarm threshold value, so that pressure relief is captured by the pressure sensing part, and further, the fire extinguishing agent is controlled to spray and extinguish fire, and the fire safety prevention and control of the battery cabin can be realized in the power failure states of system power failure overhaul and the like, so that the fire control system of the energy storage battery cabin is prevented from being singly dependent on electric control;
Meanwhile, the heating part of the fire extinguishing assembly is in heat transfer connection with the cabin-level fire detecting tube, when a control center captures a fire, the cabin-level fire detecting tube is damaged in an electric heating mode, so that the fire extinguishing assembly is controlled to spray the fire extinguishing agent to extinguish the fire, and the fire is prevented and controlled in an electric control mode and a temperature control mode by combining the characteristics of the fire detecting tube.
Preferably, the control center is a Battery Management System (BMS) capable of coordinating the actual operating state of the battery with fire control. The pressure sensing part controls the opening of the fire extinguishing assembly through a valve, for example, a steel bottle for storing fire extinguishing agent is provided with a bottle head valve at an outlet, and when the bottle head valve is out of pressure, the steel bottle is automatically opened.
In some embodiments of the present invention, the control center further comprises a cabin-level sensing assembly electrically connected to the control center, the cabin-level sensing assembly comprising: at least two of a temperature sensing detector, an infrared detector, a smoke sensing detector and a flammable gas detector.
From the above description, the control center senses the fire through the cabin-level sensing assembly, specifically, the cabin-level sensing assembly comprises at least two of a temperature sensing detector, an infrared detector, a smoke sensing detector and a combustible gas detector aiming at the characteristic that the lithium battery is easy to generate combustible gas in thermal runaway, and the comprehensive battery cabin is subjected to fire control.
In some embodiments of the present invention, the explosion venting device further comprises an explosion venting assembly, wherein the explosion venting assembly is electrically connected with the control center, and the explosion venting assembly comprises an air inlet valve, an explosion venting valve and a fan.
From the above description, the fire control system is further provided with an explosion venting assembly, so that the overpressure in the battery compartment is avoided in a controllable stage of a fire, and the components such as an air inlet valve, an explosion venting valve, a fan and the like are utilized to timely release pressure, so that further loss caused by the fire is avoided.
The battery compartment comprises at least one battery pack arranged in the battery compartment and the battery compartment fire control system, wherein the battery pack comprises at least two electric cores arranged according to a preset array and a pressure release part communicated with the battery compartment; the fire detection tube assembly further comprises a pressurized package-level fire detection tube, and the package-level fire detection tube is arranged between the electric cores according to preset intervals.
From the above description, it can be seen that the package-level fire detection tube is disposed between the electric cores in the battery package, when the electric cores are out of control, the package-level fire detection tube is damaged by heat, and releases the internal high-pressure gas, so that the pressure release portion of the battery package is forced to be opened, the high-pressure gas in the battery package is diffused into the battery compartment, and after being captured by the control center, the fire extinguishing agent is controlled to spray and extinguish fire according to the above description, and a set of fire extinguishing assembly is used to realize two-stage fire control in the battery compartment and the battery package, thereby saving the fire control and control cost.
Specifically, the preset distance is 2-4mm, preferably 2mm; for better perception electric core out of control condition, package level fire probe tube sets up in the middle section of electric core, simultaneously, the battery package still includes the quick connect connector, package level fire probe tube with the quick connect connector intercommunication, the quick connect connector is located the outside of battery package, for convenient installation and the setting of package level fire probe tube promptly, carry out the pressurization to package level fire probe tube through the quick connect connector outside the battery package after the location.
In certain embodiments of the invention, the fire suppression assembly further comprises a fire suppression agent conduit disposed inside the battery pack and outside the battery pack, respectively.
From the above description, in order to accurately prevent and control fire, fire extinguishing agent pipelines are arranged in the battery compartment (outside the battery pack) and the battery pack, preferably, a high-precision spray head is adopted in the battery pack, the spray precision can reach the vicinity of a thermal runaway battery core in the battery pack, and the fire extinguishing and cooling efficiency is higher. When extinguishing battery package level conflagration, owing to share a fire extinguishing component, put out a certain battery package with the medicament volume of cabin level, the heat absorption effect of high dose medicament cooling is better, can increase the reliability of putting out a fire in the battery package more.
Specifically, the fire control principle of the battery pack level is as follows: the package level fire probe is hugged closely in the middle upper end of electric core, when certain position electric core out of control, can produce high temperature high heat, release a large amount of gases simultaneously, high temperature high heat makes package level fire probe damaged, release inside high-pressure gas, make battery package internal pressure increase, pressure release mouth is damaged and battery compartment intercommunication, smog and combustible gas release to the cabin in, after the cabin level sensing component detects the fire alarm, heat cabin level fire probe through the heating portion, damage when cabin level fire probe is heated and reaches alarm threshold value, thereby the pressure release is caught by pressure sensing portion, and then according to pipeline pressure condition through the fire extinguishing agent pipeline, accurately spray around out of control electric core, thereby realize accurate effective fire extinguishing.
In some embodiments of the present invention, at least two pack-level sensing assemblies are disposed in each of the battery packs, and the pack-level sensing assemblies are electrically connected to the control center.
From the above description, in order to accurately sense the fire condition inside the battery pack, at least two pack-level temperature sensors are arranged besides the fire detection tube to perform fire control electric control; preferably, each cell is provided with a package-level temperature sensor, and the package-level sensing component is a temperature sensing detector.
A battery compartment fire control method is applied to the battery compartment fire control system or the battery compartment, and comprises the following steps:
the control cabin-level sensing assembly and the package-level sensing assembly respectively monitor the battery cabin and the battery package in real time;
When any two or more sensors in the cabin-level sensing assembly reach a first preset triggering condition or any two or more package-level sensing assemblies in the same battery package reach a second preset triggering condition, the heating part of the fire extinguishing assembly is controlled to operate, and the cabin-level fire probe tube is heated and damaged.
It should be noted that, the battery compartment generally has different kinds of sensors, and each kind of sensor is set up in different numbers according to different functions, and different trigger conditions are set up as the first preset trigger conditions according to different kinds of sensors, and when two or more sensors are triggered, the fire control prevention and control function is started.
From the above description, in order to accurately sense the fire in the battery compartment, the control center controls the fire in an electronically controlled manner and through the execution method, specifically, in order to prevent erroneous judgment, any two or more of the compartment sensors are required to trigger to control the heating part to rupture the compartment fire probe tube, so as to spray the fire extinguishing agent; or when two or more sensors in the battery pack are triggered, spraying the medicament by heating the fire probe.
In certain embodiments of the present invention, further comprising the step of:
when the sensor of any one of the cabin-level sensing assemblies reaches a first preset triggering condition, the energy storage assembly is controlled to stop running and the explosion venting assembly is started.
As can be seen from the above description, when a sensor is triggered, to avoid the expansion loss, the operation of the energy storage assembly is stopped first, and the air pressure in the battery compartment is controlled by the explosion venting assembly;
Further, the method further comprises the steps of:
And stopping the operation of the explosion venting assembly when the heated breakage of the cabin-level fire probe is detected.
From the above description, if the cabin-level fire probe tube is broken, it indicates that the fire is serious, and the fire extinguishing agent needs to be sprayed for prevention and control, so as to avoid the spread of the fire, the explosion venting assembly is closed, and a closed space is formed in the battery cabin.
The invention provides a battery compartment, a fire control method and a fire control system for the battery compartment, which are mainly applied to fire prevention and control of an energy storage battery compartment, and specifically described below with reference to the embodiment:
referring to fig. 1 to 3, a first embodiment of the present invention is as follows:
A battery compartment fire control system comprises a fire probe assembly, a fire extinguishing assembly 2 and a battery management system 1; the fire detection tube assembly comprises a pressurized cabin-level fire detection tube 11; the fire extinguishing assembly 2 comprises a pressure sensing part and a heating part 6, wherein the pressure sensing part is arranged in a cabin-level fire detecting tube 11 and is used for controlling the spraying of fire extinguishing agent, the cabin-level fire detecting tube 11 is arranged in a battery cabin, the pressure sensing part for controlling the opening of the fire extinguishing assembly 2 is arranged in the cabin-level fire detecting tube 11, when the cabin-level fire detecting tube 11 is heated to reach an alarm threshold value, the pressure relief is captured by the pressure sensing part, the fire extinguishing agent is further controlled to spray and extinguish the fire, the fire safety prevention and control of the battery cabin can still be realized in the power failure state of system power failure overhaul and the like, and the fire control system of the energy storage battery cabin is prevented from singly relying on electric control;
Meanwhile, when the battery management system 1 captures a fire, the cabin fire probe 11 is damaged in an electric heating mode through the heat transfer connection of the heating part 6 of the fire extinguishing assembly 2 and the cabin fire probe 11, so that the fire extinguishing assembly 2 is controlled to spray fire extinguishing agent to extinguish fire by being captured by the pressure sensing part, and the fire control prevention and control are carried out in an electric control mode and a temperature control mode by combining the characteristics of the fire probe.
Specifically, still include cabin level sensing assembly, cabin level sensing assembly and battery management system 1 electric connection, cabin level sensing assembly includes: a temperature sensing detector 8, an infrared detector, a smoke sensing detector 9 and a combustible gas detector 10. The battery management system 1 senses fire through a cabin-level sensing assembly, specifically, the characteristics of easily generating combustible gas aiming at thermal runaway of the lithium battery are achieved, the cabin-level sensing assembly comprises a temperature sensing detector 8, an infrared detector, a smoke sensing detector 9 and a combustible gas detector 10, and the comprehensive battery cabin is subjected to fire control distribution.
Preferably, the fire control system is further provided with an explosion venting assembly 18, the overpressure inside the battery compartment is avoided in a controllable stage of fire, the air inlet valve, the explosion venting valve, the fan and other assemblies are utilized to timely vent pressure, further loss caused by the fire is avoided, and meanwhile, a compartment-level mechanical pressure relief opening 19 is additionally arranged in the battery compartment, so that the electric control system is prevented from being stopped and the pressure cannot be relieved.
Referring to fig. 1 to 3, a second embodiment of the present invention is as follows:
The battery compartment comprises at least one battery pack arranged in the battery compartment and the battery compartment fire control system in the first embodiment, wherein the battery pack comprises at least two electric cores arranged according to a preset array and a pressure release part communicated with the battery compartment; the fire detection tube assembly further comprises a pressurized package-level fire detection tube 23, and the package-level fire detection tube 23 is arranged between the electric cores according to preset intervals. Namely, a package-level fire detection tube 23 is arranged between the battery cells in the battery pack, when the battery cells are out of control, the package-level fire detection tube 23 is heated and damaged, and internal high-pressure gas is released, so that the pressure release part of the battery pack is forced to be opened, the high-pressure gas in the battery pack is diffused into a battery compartment, and after being captured by the battery management system 1, the fire extinguishing agent is controlled to spray and extinguish fire according to the description, and the two-stage fire control in the battery compartment and the battery pack is realized by using one set of fire extinguishing assembly 2, so that the fire control distribution cost is saved. In addition, an emergency start-stop button 4 is arranged in the battery compartment, and when a worker finds a fire, the fire-fighting system can be started manually.
Specifically, the preset distance is 2-4mm, preferably 2mm; for better perception electric core out of control condition, package level fire probe 23 sets up in the middle upper segment of electric core, simultaneously, the battery package still includes quick connect connector 15, package level fire probe 23 and quick connect connector 15 intercommunication, the outside of battery package is located to quick connect connector 15, promptly in order to make things convenient for the installation and the setting of package level fire probe 23, carries out the pressurization to package level fire probe 23 through the quick connect connector 15 outside the battery package after the location, cabin level fire probe 11 and package level fire probe 23 select the type according to battery compartment and battery package's actual operating temperature.
Preferably, in order to accurately prevent and control fire, fire extinguishing agent pipelines 7 are arranged in a battery compartment (outside a battery pack) and in the battery pack, a one-way valve 12 is arranged at an initial section of the fire extinguishing agent pipeline 7 led out from a fire extinguishing assembly 2, the fire extinguishing agent pipelines 7 between different battery packs are communicated through quick-connection metal pipes 16, and each fire extinguishing connection channel leading into the battery pack is provided with a battery pack-level line pipe spray head 13, so that the power of fire extinguishing agent spraying is ensured, and the phenomenon that the internal decompression is caused by simultaneous spraying of a plurality of pipelines so as to prevent spraying is avoided; in addition, the fire extinguishing agent pipeline 7 arranged outside the battery pack is also provided with a battery cluster-level connecting pipeline 14 for fire prevention and control of the battery clusters in the battery cabin. Preferably, a high-precision spray head is adopted in the battery pack, the spray precision can reach the vicinity of a thermal runaway battery core in the battery pack, and the fire extinguishing and cooling efficiency is higher. When extinguishing battery package level conflagration, owing to share a fire extinguishing component 2, put out a certain battery package with the medicament volume of cabin level, the heat absorption effect of high dose medicament cooling is better, can increase the reliability of putting out a fire in the battery package more.
Referring to fig. 1 to 3, a third embodiment of the present invention is as follows:
On the basis of the second embodiment, at least two package-level sensing assemblies 20 are disposed in each battery package, and the package-level sensing assemblies 20 are electrically connected with the battery management system 1.
Namely, in the embodiment, in order to accurately sense the fire condition in the battery pack, at least two pack-level temperature sensors are arranged besides a fire probe for fire control and electric control; preferably, each cell is equipped with a package-level temperature sensor, and the package-level sensing assembly 20 is the temperature-sensing probe 8.
Referring to fig. 1 to 3, a fourth embodiment of the present invention is as follows:
the battery compartment fire control method is applied to the battery compartment fire control in the first embodiment or any one of the battery compartments in the second to third embodiments, and comprises the following steps:
the control cabin-level sensing assembly and the pack-level sensing assembly 20 respectively monitor the battery cabin and the battery pack in real time;
When any two or more sensors in the cabin-level sensing assembly reach a first preset trigger condition or any two or more package-level sensing assemblies 20 in the same battery package reach a second preset trigger condition, the heating part 6 of the fire extinguishing assembly 2 is controlled to operate, and the cabin-level fire probe tube 11 is heated and damaged. Specifically, the fire extinguishing agent spraying process is as follows, when the cabin-level fire detection tube 11 detects that the temperature in the cabin is too high and reaches the alarm threshold value, the gas fire extinguishing assembly 2 is directly started to spray, the fire detection tube action feedback device 21, the fire extinguishing agent spraying feedback device 22 and the fire extinguishing assembly under-pressure device 5 are triggered, a dry connection point signal is sent to the battery management system 1 to make a safety strategy, the related system work is stopped, the deflation alarm device 3 is triggered, and the explosion venting system is forcibly stopped.
In order to accurately sense the fire in the battery compartment, the battery management system 1 prevents and controls the fire in an electric control manner through the execution method, specifically, in order to prevent misjudgment, any two or more of the compartment level sensors are required to trigger, the heating part 6 is controlled to rupture the compartment level fire detection tube 11, and then the fire extinguishing agent is sprayed; or when two or more sensors in the battery pack are triggered, spraying the medicament by heating the fire probe. In addition, an electromagnetic valve can be arranged in the fire extinguishing assembly 2 according to the use condition, when the sensor senses the fire, the electromagnetic valve of the fire extinguishing agent steel cylinder in the fire extinguishing assembly 2 is started to spray the agent, and the output electric signal can be triggered after the judgment of the battery management system 1.
The method also comprises the steps of:
When the sensor of any one of the cabin level sensing assemblies reaches a first preset trigger condition, the energy storage assembly is controlled to stop operating and the explosion venting assembly 18 is started. When one sensor is triggered, in order to avoid the expansion loss, the operation of the energy storage component is stopped firstly, and the air pressure in the battery compartment is controlled through the explosion venting component 18; examples are as follows: when the combustible gas detector 10 detects that the concentration of the combustible gas reaches a first alarm threshold value, the smoke detector 9 detects that the concentration of smoke is too high to reach the alarm threshold value or the temperature detector 8 detects that the temperature in the cabin is too high to reach the alarm threshold value, the combustible gas detector 10 transmits a dry contact point signal to the battery management system 1 to inform the battery management system 1 of making a safety strategy, stops the related system, simultaneously transmits a dry contact point signal to the explosion venting system, opens an air inlet valve, and the explosion venting valve, and starts a fan.
When the cabin-level fire probe 11 is detected to be damaged by heat, the operation of the explosion venting assembly 18 is stopped. If the cabin-level fire detecting tube 11 is damaged, the fire is serious, the fire extinguishing agent needs to be sprayed for prevention and control, and the explosion venting assembly 18 is closed to form a closed space in the battery cabin so as to avoid the spread of the fire.
In summary, according to the battery compartment, the battery compartment fire control method and the battery compartment fire control system provided by the invention, the pressure sensing part for controlling the opening of the fire extinguishing assembly is arranged in the cabin-level fire detecting tube, and when the cabin-level fire detecting tube is heated to reach the alarm threshold value, the pressure release is captured by the pressure sensing part, so that the fire extinguishing agent is controlled to spray and extinguish the fire, the fire safety prevention and control of the battery compartment can be realized in the power failure state such as the system power failure overhaul, and the single dependence of the fire control system of the energy storage battery compartment is avoided;
Meanwhile, the heating part of the fire extinguishing assembly is in heat transfer connection with the cabin-level fire detecting tube, when a control center captures a fire, the cabin-level fire detecting tube is broken in an electric heating mode, so that the fire extinguishing assembly is controlled to spray a fire extinguishing agent to extinguish the fire, and the fire is prevented and controlled in an electric control mode and a temperature control mode by combining the characteristics of the fire detecting tube;
in addition, a package-level fire detection tube is arranged between the battery cells in the battery pack, when the battery cells are out of control, the package-level fire detection tube is heated and damaged, and internal high-pressure gas is released, so that the pressure release part of the battery pack is forced to be opened, the high-pressure gas in the battery pack is diffused into the battery compartment, after being captured by the control center, the fire extinguishing agent is controlled to spray and extinguish fire according to the description, two-stage fire control in the battery compartment and the battery pack is realized by using one set of fire extinguishing assembly, and the fire control and control cost is saved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (8)
1. A battery compartment characterized by: the fire control system comprises at least one battery pack arranged in a battery compartment and a battery compartment fire control system; the battery compartment fire control system comprises a fire probe assembly, a fire extinguishing assembly, a compartment level sensing assembly and a control center;
the fire detection tube assembly comprises a pressurized cabin-level fire detection tube, and the cabin-level fire detection tube is arranged in the battery cabin;
The fire extinguishing assembly comprises a heating part and a pressure sensing part for controlling fire extinguishing agent to spray, the pressure sensing part is arranged inside the cabin-level fire probe tube, and the heating part is in heat transfer connection with the cabin-level fire probe tube;
The control center is in control connection with the heating part to control the heating part to heat and actively trigger the heated breakage of the cabin-level fire probe tube;
the cabin-level sensing assembly is electrically connected with the control center, and the cabin-level sensing assembly comprises: at least two of a temperature-sensing detector, an infrared detector, a smoke-sensing detector and a flammable gas detector;
The battery pack comprises at least two electric cores arranged according to a preset array and a pressure relief part communicated with the battery compartment; the fire detection tube assembly further comprises a pressurized package-level fire detection tube, and the package-level fire detection tube is arranged between the electric cores according to preset intervals.
2. A battery compartment as claimed in claim 1, wherein: the battery compartment fire control system further comprises an explosion venting assembly, the explosion venting assembly is electrically connected with the control center, and the explosion venting assembly comprises an air inlet valve, an explosion venting valve and a fan.
3. A battery compartment as claimed in claim 1, wherein: the battery pack further comprises a quick connector, the pack-grade fire probe pipe is communicated with the quick connector, and the quick connector is arranged outside the battery pack.
4. A battery compartment as claimed in claim 1, wherein: the fire extinguishing assembly further comprises a fire extinguishing agent pipeline, and the fire extinguishing agent pipeline is respectively arranged inside the battery pack and outside the battery pack.
5. A battery compartment as claimed in claim 1, wherein: at least two package-level sensing assemblies are arranged in each battery package, and the package-level sensing assemblies are electrically connected with the control center.
6. A battery compartment fire control method is characterized in that: a battery compartment for use in any of claims 1-5, comprising the steps of:
the control cabin-level sensing assembly and the package-level sensing assembly respectively monitor the battery cabin and the battery package in real time;
When any two or more sensors in the cabin-level sensing assembly reach a first preset triggering condition or any two or more package-level sensing assemblies in the same battery package reach a second preset triggering condition, the heating part of the fire extinguishing assembly is controlled to operate, and the cabin-level fire probe tube is heated and damaged.
7. The battery compartment fire control method of claim 6, wherein: the method also comprises the steps of:
when the sensor of any one of the cabin-level sensing assemblies reaches a first preset triggering condition, the energy storage assembly is controlled to stop running and the explosion venting assembly is started.
8. The battery compartment fire control method of claim 6, wherein: the method also comprises the steps of:
And stopping the operation of the explosion venting assembly when the heated breakage of the cabin-level fire probe is detected.
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| CN202410316630.3A CN117899402B (en) | 2024-03-20 | 2024-03-20 | Battery compartment, battery compartment fire control system and method |
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| CN117899402A (en) | 2024-04-19 |
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