CN220632825U - Lithium battery fire extinguishing device - Google Patents
Lithium battery fire extinguishing device Download PDFInfo
- Publication number
- CN220632825U CN220632825U CN202322177022.2U CN202322177022U CN220632825U CN 220632825 U CN220632825 U CN 220632825U CN 202322177022 U CN202322177022 U CN 202322177022U CN 220632825 U CN220632825 U CN 220632825U
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- CN
- China
- Prior art keywords
- fire extinguishing
- mounting box
- lithium battery
- pipe
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 77
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000011261 inert gas Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 18
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model provides a lithium battery fire extinguishing device, and relates to the technical field of lithium battery fire extinguishing equipment. The smoke sensor comprises a smoke sensor, a control device, a second mounting box with an opening at the upper end, and a first mounting box arranged above the second mounting box, wherein a vent is formed in the lower part of the side wall of the second mounting box; at least one fire extinguishing mechanism and an air charging device are arranged in the first mounting box, and the lower ends of the fire extinguishing mechanism and the air charging device penetrate through the bottom surface of the first mounting box and are positioned in the second mounting box; the fire extinguishing mechanism is internally provided with a fire extinguishing agent, the air charging device is internally provided with inert gas with the density smaller than that of oxygen, and the fire extinguishing mechanism and the air charging device are electrically connected with the control device. The control device can automatically control the fire extinguishing mechanism to spray the fire extinguishing agent on the lithium battery, and extinguish the fire and cool the lithium battery. The charging device can be automatically controlled to charge inert gas into the second mounting box, so that the lithium battery and oxygen are separated, and continuous combustion of the lithium battery is avoided.
Description
Technical Field
The utility model relates to the technical field of lithium battery fire extinguishing equipment, in particular to a lithium battery fire extinguishing device.
Background
Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment. With the development of science and technology, lithium batteries have become the mainstream, and lithium batteries can be broadly divided into two types: lithium metal batteries and lithium ion batteries.
The traditional lithium battery pack is generally provided with a flame-retardant and explosion-proof mechanism or the lithium battery is isolated from the external environment to extinguish the fire, but the fire-extinguishing effect is not ideal. When the lithium battery works, oxygen can be released from the positive electrode, and the lithium battery can burn even if the lithium battery is isolated from the outside air, so that a lithium battery fire extinguishing device needs to be studied to solve the problems.
Disclosure of Invention
The utility model aims to provide a lithium battery fire extinguishing device which can solve the problems of the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the lithium battery fire extinguishing device comprises a smoke sensor, a control device, a second installation box with an opening at the upper end, and a first installation box arranged above the second installation box, wherein a vent is formed in the lower part of the side wall of the second installation box;
at least one fire extinguishing mechanism and an air charging device are arranged in the first mounting box, and the lower ends of the fire extinguishing mechanism and the air charging device penetrate through the bottom surface of the first mounting box and are positioned in the second mounting box; the fire extinguishing mechanism is internally provided with a fire extinguishing agent, the air charging device is internally provided with inert gas with the density smaller than that of oxygen, and the fire extinguishing mechanism and the air charging device are electrically connected with the control device.
Further, the fire extinguishing mechanism comprises a first accommodating tank and a first conveying pipe, one end of the first conveying pipe is connected with the first accommodating tank, the other end of the first conveying pipe penetrates through the bottom of the first mounting box and stretches into the second mounting box, a first electromagnetic valve is mounted on the first conveying pipe, and the first electromagnetic valve is electrically connected with the control device.
Further, an installation box for installing the lithium battery is fixedly arranged in the second installation box, and a vent hole is formed in the lower part of the side wall, close to the vent hole, of the installation box; when the first mounting box is mounted in place, the upper end of the mounting box is abutted with the bottom surface of the first mounting box; each mounting box is correspondingly provided with a fire extinguishing mechanism.
Further, the first conveying pipe comprises a first connecting pipe and an injection pipe, one end of the first connecting pipe is connected with the first accommodating tank, and the other end of the first connecting pipe sequentially penetrates through the bottom surface of the first mounting box and the peripheral wall of the injection pipe and is communicated with the injection pipe;
the injection pipe is located the top of lithium cell, and the injection pipe is equipped with a plurality of jet orifices towards the interval on the perisporium of lithium cell, and the both ends of injection pipe are closed setting.
Further, the inflating device comprises a second accommodating tank and a second conveying pipe, the second conveying pipe comprises a second connecting pipe, and a second electromagnetic valve is arranged on the second connecting pipe;
one end of the second conveying pipe is connected with the second accommodating tank, and the other end of the second conveying pipe is closed;
the peripheral wall of the second conveying pipe is provided with the spraying heads, the number of the spraying heads is the same as that of the installed boxes, and one end of each spraying head penetrates through the bottom surface of the first installation box and is located above the installation box.
Preferably, a plurality of heat insulation and cooling devices are arranged in the second mounting box, and the mounting box is mounted inside the heat insulation and cooling devices.
Further, the heat insulation and cooling device comprises two heat dissipation plates, and heat dissipation grooves are formed in the heat dissipation plates in a penetrating mode;
a heat insulating plate is arranged between two adjacent heat insulating and cooling devices, the inside of the second installation box is divided into a plurality of independent spaces by a plurality of heat insulating plates, and the upper ends of the heat insulating plates can be abutted with the bottom surface of the first installation box.
The utility model has at least the following advantages or beneficial effects:
according to the lithium battery fire extinguishing device provided by the utility model, the lithium battery is monitored through the smoke sensor, and when the lithium battery is short-circuited or spontaneously burned to generate smoke, the control device can automatically control the fire extinguishing mechanism and the inflation device to be started. The fire extinguishing agent in the fire extinguishing mechanism is sprayed on the lithium battery in the second mounting box, so that the lithium battery is extinguished. And the inert gas in the charging device is charged into the second mounting box, the density of the inert gas is smaller than that of the oxygen, and as the volume of the inert gas charged into the second mounting box is larger and larger, the oxygen released by the lithium battery and the oxygen in the second mounting box are positioned below the inert gas and are discharged through the ventilation opening. The inert gas is positioned at the upper part of the second mounting box, and the electrode column part of the lithium battery is positioned in the inert gas, so that oxygen is isolated from the lithium battery, and the combustion of the lithium battery is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a lithium battery fire extinguishing device provided by the utility model;
FIG. 2 is a schematic view of the structure of the first mounting box according to the present utility model;
FIG. 3 is a schematic view of the structure of a second mounting case according to the present utility model;
fig. 4 is a cross-sectional view at A-A in fig. 1.
Icon: 100-a second mounting box; 101-a vent; 103-mounting box; 110-a first mounting box; 130-a fire extinguishing mechanism; 131-a first holding tank; 135-a first connection tube; 137-jet pipe; 139-injection holes; 150-an inflator; 151-a second holding tank; 155-a second connecting tube; 157-an ejection head; 170-a heat insulation and cooling device; 171-a heat dissipation plate; 173-a heat sink; 175-insulating panels; 177-vent.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 4, a fire extinguishing apparatus for lithium battery includes a smoke sensor and a control device, and further includes a second mounting box 100 having an opening at an upper end and a first mounting box 110 mounted above the second mounting box 100, the first mounting box 110 being used for opening and closing the second mounting box 100, the first mounting box 110 and the second mounting box 100 being connected by a screw. Be used for installing the lithium cell in the second installation case 100, vent 101 has been seted up to the lateral wall lower part of second installation case 100, and vent 101 includes air intake and vent for the air flows between second installation case 100 and external environment through vent 101, thereby satisfies the daily cooling of lithium cell, avoids appearing the heat accumulation phenomenon in the second installation case 100, leads to the lithium cell overheated. When the lithium battery is mounted in the second mounting case 100, it is necessary that the end of the lithium battery provided with the electrode column faces the first mounting case 110.
At least one fire extinguishing mechanism 130 and an inflator 150 are disposed within the first mounting case 110. The lower ends of the fire extinguishing mechanism 130 and the inflator 150 are located in the second mounting case 100 through the bottom surface of the first mounting case 110, and are located directly above the lithium battery. The fire extinguishing mechanism 130 contains a fire extinguishing agent, which is a conventional UPA fire extinguishing agent. The inflator 150 contains an inert gas having a density less than that of oxygen, such as helium.
The fire extinguishing mechanism 130 and the inflator 150 are both electrically connected to the control device. When the smoke sensor detects the generation of smoke in the second mounting box 100, the control device automatically controls the fire extinguishing mechanism 130 and the inflator 150 to be activated. The fire extinguishing agent in the fire extinguishing mechanism 130 is sprayed on the lithium battery, particularly at the electrode column, thereby cooling and extinguishing the lithium battery. While the inert gas in the inflator 150 is filled into the second mounting case 100, the oxygen in the second mounting case 100 is located below the inert gas, along with the filling of the inert gas, the oxygen is discharged from the ventilation opening 101 by the inert gas, and the electrode column is located in the inert gas, when the oxygen is released from the lithium battery, the oxygen sinks and is discharged from the ventilation opening 101, so that the oxygen and the lithium battery are separated, and the combustion of the lithium battery is avoided.
Preferably, a mounting box 103 for mounting the lithium battery is provided in the second mounting box 100, and the bottom of the mounting box 103 and the bottom of the second mounting box 100 are welded or screwed. The air vent 177 is arranged at the lower part of the side wall of the mounting box 103 close to the air vent, when the first mounting box 110 is mounted on the second mounting box 100 in place, the upper end of the mounting box 103 is abutted against the bottom surface of the first mounting box 110, namely, the upper end opening of the mounting box 103 is closed by the bottom of the first mounting box 110, so that air in the mounting box 103 cannot flow from the upper end opening, and when inert gas enters the mounting box 103, oxygen in the mounting box 103 can only be discharged from the air vent 177, so that the inert gas is prevented from being discharged from the upper end of the mounting box 103.
Because the bottom of the first mounting box 110 seals the opening at the upper end of the mounting box 103, so that each mounting box 103 is an independent space, in this embodiment, each mounting box 103 is correspondingly provided with a fire extinguishing mechanism 130 and a smoke sensor, so as to ensure that the fire extinguishing agent can be sprayed by the fire extinguishing mechanism 130 in each mounting box 103 for cooling and extinguishing operation. In addition, since the plurality of mounting boxes 103 separate the plurality of groups of lithium batteries, when the lithium batteries in one of the mounting boxes 103 are short-circuited and spontaneous combustion, the control device only needs to control the fire extinguishing mechanism 130 corresponding to the mounting box 103 to start, so that the damage of the fire extinguishing agent to other lithium batteries is avoided.
Specifically, the fire extinguishing mechanism 130 includes a first holding tank 131 and a first delivery pipe. The first receiving tank 131 is located in the first mounting case 110 and is connected to the bottom of the first mounting case 110 by bolts. The first conveying pipe is provided with a first electromagnetic valve which is electrically connected with the control device. The first delivery tube includes a first connecting tube 135 and a jet tube 137. One end of the first connection pipe 135 is connected to the first receiving tank 131, the other end of the first connection pipe 135 sequentially penetrates through the bottom surface of the first mounting case 110 and the circumferential wall of the injection pipe 137, and communicates with the injection pipe 137, and the first solenoid valve is mounted on the first connection pipe 135. The injection pipe 137 is located above the lithium battery, a plurality of injection holes 139 are formed in the peripheral wall of the injection pipe 137 facing the lithium battery at intervals, and two ends of the injection pipe 137 are closed.
When the control device controls the first electromagnetic valve to be opened, the fire extinguishing agent in the first accommodating tank 131 flows into the injection pipe 137 through the first connecting pipe 135 and is sprayed out towards the lithium battery through the injection hole 139 formed on the injection pipe 137, so that the temperature of the lithium battery is reduced and the fire is extinguished at the spontaneous combustion position.
Further, the inflator 150 includes a second housing tank 151 and a second delivery pipe. The second receiving tank 151 is fixedly installed inside the first mounting case 110 through an arc-shaped mounting seat. The second delivery pipe includes a second connection pipe 155, one end of which is connected with the tank opening of the second accommodating tank 151, and the other end of which is provided with a closed end. The second transfer pipe is provided with ejection heads 157 on the peripheral wall, and the number of the ejection heads 157 is the same as that of the mounted cartridges 103 and corresponds one by one. One end of the ejection head 157 penetrates the bottom surface of the first mounting case 110 and is located above the mounting case 103. The second connection pipe 155 is provided with a second electromagnetic valve, and the second electromagnetic valve is electrically connected with the control device. The second transfer pipe between the second solenoid valve and the second receiving tank 151 is not provided with the injection head 157.
The control device controls the second electromagnetic valve to be opened, the inert gas in the second accommodating tank 151 enters the injection head 157 through the second connecting pipe 155 and is conveyed to the upper part of the installation box 103 through the injection head 157, as the density of the inert gas is smaller than that of the oxygen, the oxygen can be positioned below the inert gas, along with the increasing of the inert gas in the installation box 103, the oxygen in the installation box 103 can be extruded and discharged from the ventilation opening 101, so that no oxygen exists around the lithium battery, and the lithium battery is extinguished or prevented from being burnt.
In another embodiment, a plurality of heat insulation and cooling devices 170 are further disposed in the second mounting box 100, the heat insulation and cooling devices 170 include two heat dissipation plates 171 disposed at intervals, and the bottom of the heat dissipation plates 171 is welded to the bottom of the second mounting box 100. The heat dissipation plate 171 is provided with a heat dissipation groove 173 in a penetrating manner, and the air inlet and the air vent are connected through the heat dissipation groove 173. The mounting box 103 is mounted between two heat dissipation plates 171. In this embodiment, the heat dissipation plate 171 is made of an aluminum material, the mounting box 103 is made of a metal material with good heat conduction performance, when the lithium battery is mounted in the mounting box 103, the side wall of the lithium battery is abutted with the side wall of the mounting box 103, so that heat can be conveniently conducted onto the heat dissipation plate 171 through the mounting box 103, and when air passes through the heat dissipation groove 173, the heat can be quickly taken away, so that the temperature of the lithium battery can be reduced.
Preferably, a heat insulation board 175 is disposed between two adjacent heat insulation cooling devices 170, the plurality of heat insulation boards 175 divide the interior of the second installation box 100 into a plurality of independent spaces, the upper end of the heat insulation board 175 can be abutted against the bottom surface of the first installation box 110, the heat insulation board 175 can avoid heat generated by the lithium battery to be transferred from one independent space to another independent space, namely, when a group of lithium batteries can be prevented from generating a large amount of heat, the temperature of the adjacent lithium batteries is caused to rise rapidly, so that the possibility of total thermal runaway of the lithium batteries is reduced.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The lithium battery fire extinguishing device comprises a smoke sensor and a control device, and is characterized by further comprising a second mounting box with an opening at the upper end and a first mounting box mounted above the second mounting box, wherein a vent is formed in the lower part of the side wall of the second mounting box;
at least one fire extinguishing mechanism and an air charging device are arranged in the first mounting box, and the lower ends of the fire extinguishing mechanism and the air charging device penetrate through the bottom surface of the first mounting box and are positioned in the second mounting box; the fire extinguishing mechanism is internally provided with a fire extinguishing agent, the air charging device is internally provided with inert gas with density smaller than that of oxygen, and the fire extinguishing mechanism and the air charging device are electrically connected with the control device.
2. The lithium battery fire extinguishing device according to claim 1, wherein the fire extinguishing mechanism comprises a first accommodating tank and a first conveying pipe, one end of the first conveying pipe is connected with the first accommodating tank, the other end of the first conveying pipe penetrates through the bottom of the first mounting box and stretches into the second mounting box, a first electromagnetic valve is mounted on the first conveying pipe, and the first electromagnetic valve is electrically connected with the control device.
3. The lithium battery fire extinguishing device according to claim 2, wherein a mounting box for mounting the lithium battery is fixedly arranged in the second mounting box, and a vent is arranged at the lower part of the side wall of the mounting box, which is close to the vent; when the first installation box is installed in place, the upper end of the installation box is abutted with the bottom surface of the first installation box; each mounting box is correspondingly provided with one fire extinguishing mechanism.
4. The lithium battery fire extinguishing device according to claim 2, wherein the first conveying pipe comprises a first connecting pipe and a spraying pipe, one end of the first connecting pipe is connected with the first containing tank, and the other end of the first connecting pipe sequentially penetrates through the bottom surface of the first mounting box and the peripheral wall of the spraying pipe and is communicated with the spraying pipe;
the injection pipe is located above the lithium battery, a plurality of injection holes are formed in the position, facing the peripheral wall of the lithium battery, of the injection pipe at intervals, and two ends of the injection pipe are closed.
5. A lithium battery fire extinguishing apparatus according to claim 3, wherein the inflator includes a second housing tank and a second delivery pipe including a second connection pipe on which a second solenoid valve is mounted;
one end of the second conveying pipe is connected with the second accommodating tank, and the other end of the second conveying pipe is closed;
the peripheral wall of the second conveying pipe is provided with the spraying heads, the number of the spraying heads is the same as that of the installed boxes, and one end of each spraying head penetrates through the bottom surface of the first installation box and is located above the corresponding installation box.
6. The lithium battery fire extinguishing device according to claim 5, wherein a plurality of heat insulation and cooling devices are arranged in the second mounting box, and the mounting box is mounted inside the heat insulation and cooling devices.
7. The lithium battery fire extinguishing device according to claim 6, wherein the heat insulation and cooling device comprises two heat dissipation plates, and heat dissipation grooves are formed in the heat dissipation plates in a penetrating manner;
a plurality of heat insulation boards are arranged between two adjacent heat insulation and cooling devices, the inside of the second installation box is divided into a plurality of independent spaces by the heat insulation boards, and the upper ends of the heat insulation boards are abutted to the bottom surface of the first installation box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322177022.2U CN220632825U (en) | 2023-08-14 | 2023-08-14 | Lithium battery fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322177022.2U CN220632825U (en) | 2023-08-14 | 2023-08-14 | Lithium battery fire extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220632825U true CN220632825U (en) | 2024-03-22 |
Family
ID=90264155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322177022.2U Active CN220632825U (en) | 2023-08-14 | 2023-08-14 | Lithium battery fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220632825U (en) |
-
2023
- 2023-08-14 CN CN202322177022.2U patent/CN220632825U/en active Active
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