CN219453979U - Battery thermal runaway flue gas processing apparatus and system - Google Patents
Battery thermal runaway flue gas processing apparatus and system Download PDFInfo
- Publication number
- CN219453979U CN219453979U CN202320185840.4U CN202320185840U CN219453979U CN 219453979 U CN219453979 U CN 219453979U CN 202320185840 U CN202320185840 U CN 202320185840U CN 219453979 U CN219453979 U CN 219453979U
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- Prior art keywords
- thermal runaway
- flue gas
- igniter
- exhaust pipe
- ignition switch
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000003546 flue gas Substances 0.000 title claims abstract description 63
- 239000000779 smoke Substances 0.000 claims description 18
- 230000007480 spreading Effects 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000005474 detonation Methods 0.000 claims 2
- 238000004880 explosion Methods 0.000 description 9
- 239000003063 flame retardant Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 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 4
- 238000009434 installation Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery thermal runaway flue gas treatment device and a system, which mainly solve the problems that the traditional thermal runaway flue gas treatment device cannot effectively ignite and potential safety hazards are generated. The device comprises an exhaust pipe, an ignition switch, an igniter and a flame arrester; the igniter is arranged at the outlet of the exhaust pipe and used for igniting the thermal runaway flue gas exhausted by the exhaust pipe; the ignition switch is arranged on the exhaust pipe and is used for sending a signal to the igniter when the thermal runaway flue gas passes through the exhaust pipe so that the igniter is started; the flame arrester is arranged on the exhaust pipe and is positioned between the igniter and the ignition switch. According to the utility model, the flame arrester is arranged between the igniter and the ignition switch, so that flame can be effectively prevented from entering the battery, the flame ignition switch is prevented from being damaged, and the igniter is ensured to be accurately and reliably started.
Description
Technical Field
The utility model belongs to the field of batteries, and particularly relates to a battery thermal runaway flue gas treatment device and system.
Background
With the further development of the energy storage field of lithium ion batteries in recent years, the safe use of lithium ion batteries is also receiving attention. Because of the principle and structural characteristics of lithium ion batteries, large heat is often generated due to internal resistance heating in the repeated use process, the heat can be gradually increased, if the accumulated heat is not effectively emitted, the temperature can be further increased, when the temperature reaches the limit, the heat balance of the batteries can be destroyed, a series of self-heating side reactions are initiated, a large amount of combustible gas is generated, a thermal runaway phenomenon occurs, the internal ignition of the batteries can be finally caused, explosion is initiated in severe cases, and potential safety hazards are generated.
In order to solve the above problems, chinese patent CN114914624a discloses a device for treating thermal runaway flue gas of a battery, a battery housing and a battery pack, wherein the device for treating thermal runaway flue gas of a battery comprises an exhaust funnel, a plurality of exhaust nozzles, a pressure valve, an ignition switch and an ignition device, wherein the exhaust nozzles are fixedly connected with the exhaust funnel respectively to form an exhaust channel of the thermal runaway flue gas; the pressure valve and the ignition switch are arranged in the exhaust channel, the pressure valve seals the exhaust channel when in normal pressure so that the exhaust channel is kept closed, and when in high pressure, a piston in the pressure valve is pushed by air pressure to move, the exhaust channel is opened, and meanwhile, the pressure valve props against the ignition switch to open the ignition device; when the battery generates thermal runaway smoke, the pistons in the pressure valves are sequentially pushed along with the gradual increase of the air pressure, the ignition switch is sequentially started, the ignition device is started, and the thermal runaway smoke is ignited.
The flame is prevented from flowing back into the battery by the anti-backfire valve, but the flame reversely spreads to damage the ignition switch and the pressure valve when the thermal runaway smoke is ignited before the inlet of the pressure valve is arranged by the anti-backfire valve, so that the ignition device cannot be accurately and reliably started, and the whole thermal runaway smoke treatment device is invalid, and potential safety hazards are generated.
Disclosure of Invention
Aiming at the defect that the existing thermal runaway flue gas treatment device cannot effectively ignite and generates potential safety hazards, the utility model provides a battery thermal runaway flue gas treatment device and a system. According to the battery thermal runaway flue gas treatment device, the flame arrester is arranged between the igniter and the ignition switch, so that the flame is prevented from reversely spreading to damage the ignition switch and the battery, the igniter is ensured to be reliably started in time, and potential safety hazards caused by failure are avoided.
In order to solve the problems, the technical scheme of the utility model is as follows:
the utility model provides a battery thermal runaway flue gas treatment device, which comprises an exhaust pipe, an ignition switch, an igniter and a flame arrester; the igniter is arranged at the outlet of the exhaust pipe and is used for igniting thermal runaway flue gas exhausted by the exhaust pipe; the ignition switch is arranged on the exhaust pipe and is used for sending a signal to the igniter when the thermal runaway flue gas passes through the exhaust pipe so that the igniter is started; the flame arrester is arranged on the exhaust pipe and is positioned between the igniter and the ignition switch and used for preventing flame from reversely spreading to damage the ignition switch and the battery. According to the utility model, the flame arrester is arranged between the igniter and the ignition switch, so that not only can the flame be effectively prevented from damaging a battery, but also the ignition switch can be protected, the flame is prevented from damaging the ignition switch, and the igniter is ensured to be accurately and reliably started.
The ignition switch and the flame arrester can be mutually independent devices or can be of an integrated structure. If the ignition switch is an independent device, the ignition switch and the flame arrester can be arranged at different positions of the exhaust pipe. Preferably, the ignition switch and the flame arrester are arranged into an integrated structure, and the integrated structure comprises a shell, a flame-retardant filter element and an induction device; the shell is internally provided with a smoke channel through which the thermal runaway smoke passes, the fire-retarding filter element and the sensing device are both positioned in the smoke channel, the fire-retarding filter element is arranged close to the outlet end of the smoke channel, and the sensing device is arranged close to the inlet end of the smoke channel. The integral structure of ignition switch and flame arrester has simplified the structure of whole device, and the integrated level is high, is convenient for assemble, has reduced the work load of on-the-spot installation.
Further, in order to ensure that the fire arrestor can safely and reliably realize the fire-retarding function, the fire-retarding filter element is of a multi-layer metal net structure.
Further, for the installation and the dismantlement of convenient fire-retardant filter core, above-mentioned shells inner wall is equipped with the stop collar, the stop collar is located the both sides or the one side of fire-retardant filter core for the removal of restriction fire-retardant filter core in the casing.
The ignition switch sends a signal to the igniter when the thermal runaway flue gas passes through the exhaust pipe, and specifically, the igniter can be started by detecting the pressure, the temperature, the gas composition and the like in the exhaust pipe. Therefore, the sensing device can adopt a pressure sensing device, a temperature sensing device or a magnetic force sensing device.
Further, when the ignition switch and the flame arrester are of a split type structure, the ignition switch is a magnetic switch, the sensitivity of the magnetic switch is high, and the reliability is good. The flame arrester is a pipeline flame arrester, the pipeline flame arrester is simple in structure and convenient to install, and the magnetic switch, the pipeline flame arrester and the exhaust pipe can be connected through threads.
Further, the igniter is a pulse igniter, a rain-proof cover is arranged at the outlet of the exhaust pipe, and the rain-proof cover prevents external impurities or water vapor from entering the exhaust pipe as much as possible, so that the influence on each device is generated.
In addition, the utility model also provides a battery thermal runaway flue gas treatment system which comprises a collecting pipe and a plurality of battery thermal runaway flue gas treatment devices, wherein one end of the collecting pipe is connected with the explosion venting opening or the explosion venting pipe of at least one battery, and the other end of the collecting pipe is communicated with inlets of a plurality of exhaust pipes.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
in the battery thermal runaway flue gas treatment device provided by the utility model, the flame arrestor is arranged between the igniter and the ignition switch, so that the flame can be prevented from reversely spreading to damage the battery, and the flame can be prevented from reversely spreading to damage the ignition switch, so that the ignition switch is protected, the igniter can be timely and reliably started, further, the igniter can timely ignite the thermal runaway flue gas, and the safety of the battery is improved.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a block diagram showing a thermal runaway flue gas treatment apparatus for a battery in example 1 of the present utility model;
FIG. 2 is a schematic view showing the structure of a thermal runaway flue gas treatment device for a battery in example 2 of the present utility model;
FIG. 3 is a schematic view showing the structure of a thermal runaway flue gas treatment device for a battery in example 2 of the present utility model;
FIG. 4 is a schematic view showing the structure of the flame arrester and the ignition switch integrally provided in embodiment 2 of the present utility model;
fig. 5 is a schematic diagram of a thermal runaway flue gas treatment system for a battery in example 3 of the present utility model.
Reference numerals: the device comprises a 1-exhaust pipe, a 2-ignition switch, a 3-igniter, a 4-flame arrester, a 5-rain cover, a 6-battery, a 7-collecting pipe, a 21-sensing device, a 22-smoke channel, a 41-shell, a 42-flame-retardant filter element, a 43-limit sleeve, a 211-magnetic piston, a 212-magnetic sensor and a 213-spring.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
The battery thermal runaway flue gas treatment device provided by the utility model can ignite the flue gas generated by the thermal runaway of the battery, so that dangerous events such as explosion, fire and the like caused by the aggregation of the thermal runaway flue gas are avoided, the safety of the battery is greatly improved, and the pollution of the discharged thermal runaway flue gas to the atmosphere is also avoided.
Example 1
As shown in fig. 1, the present embodiment provides a battery thermal runaway flue gas treatment device, comprising an exhaust pipe 1, an ignition switch 2, an igniter 3 and a flame arrester 4; an igniter 3 is disposed at the outlet of the exhaust pipe 1 for igniting the thermal runaway flue gas exhausted from the exhaust pipe 1. The ignition switch 2 is arranged on the exhaust pipe 1 and is used for sending a signal to the igniter 3 when the thermal runaway flue gas passes through the exhaust pipe 1 so that the igniter 3 is started, the igniter 3 is preferably a pulse igniter, and the pulse igniter is simple in structure and high in reliability; the flame arrester 4 is arranged on the exhaust pipe 1 and is positioned between the igniter 3 and the ignition switch 2, and is used for preventing the flame from spreading reversely to damage the ignition switch 2 and the battery. In addition, a rain cover 5 may be provided at the outlet of the exhaust pipe 1 to prevent foreign matters or water vapor from entering the exhaust pipe 1 as much as possible, thereby affecting the ignition switch 2 and the igniter 3.
In this embodiment, the ignition switch 2 and the flame arrester 4 are of a split structure, that is, the ignition switch 2 and the flame arrester 4 are respectively made of independent devices and are connected to different positions of the exhaust pipe 1. The flame arrester 4 can adopt various structural forms as long as flame can be prevented from spreading in the exhaust pipe 1, and particularly a flame arrester valve or a pipeline flame arrester can be adopted and is connected to a position, close to an outlet, of the exhaust pipe through threads or a flange. At this time, ignition switch 2 passes through screw thread or flange joint and is close to the position of import at the blast pipe, and this ignition switch 2 can adopt magnetic force switch, and magnetic force switch sensitivity is higher, need not higher induction pressure, can open at the initial stage that thermal runaway flue gas passed through ignition 3, and then reliably ignites thermal runaway flue gas.
In this embodiment, the flame arrestor 4 is disposed between the igniter 3 and the ignition switch 2, that is, an isolation barrier is disposed between the ignition switch 2, and if a flame is spread reversely when the thermal runaway flue gas is ignited, the flame is blocked by the flame arrestor 4 at this time, so that the ignition switch cannot be damaged. The structure can effectively protect the ignition switch 2, ensure that the ignition switch 2 can be accurately and reliably turned on, and further ensure the reliable ignition of the igniter 3.
The battery thermal runaway flue gas treatment device in the embodiment can ignite thermal runaway flue gas when the battery is in thermal runaway, so that dangerous events such as explosion and fire caused by accumulation of the thermal runaway flue gas are avoided, and the safety of the battery is greatly improved.
Example 2
As shown in fig. 2 and 3, the present embodiment provides a battery thermal runaway flue gas treatment device, including an exhaust pipe 1, an ignition switch 2, an igniter 3, and a flame arrester 4; the igniter 3 is arranged at the outlet of the exhaust pipe 1 and is used for igniting the thermal runaway flue gas exhausted by the exhaust pipe 1; the ignition switch 2 is arranged on the exhaust pipe 1, and sends an electric signal to the igniter 3 when the thermal runaway flue gas passes through the exhaust pipe 1, so that the igniter 3 is started, the igniter 3 is preferably a pulse igniter 3, and the pulse igniter 3 is simple in structure and high in reliability.
As shown in fig. 4, in this embodiment, the ignition switch 2 and the flame arrester 4 are integrally configured, that is, the ignition switch 2 and the flame arrester 4 are integrally disposed on the exhaust pipe 1, the integrally configured structure specifically includes a housing 41, a flame retardant filter element 42 and an induction device 21, a flue gas channel 22 through which thermal runaway flue gas passes is disposed in the housing 41, the flame retardant filter element 42 and the induction device 21 are both disposed in the flue gas channel 22, the flame retardant filter element 42 is disposed at an outlet end of the flue gas channel 22, and the induction device 21 is disposed at an inlet end of the flue gas channel 22.
In order to safely and reliably realize the fire-retarding function, the fire-retarding filter element 42 has a multi-layer metal mesh structure. In order to realize reliable installation of the fire-retarding filter element 42, the inner wall of the shell 41 is provided with a limiting part, the limiting part is a limiting sleeve 43, the limiting sleeve 43 is connected with the inner wall of the shell 41 through threads, and can be arranged at two sides of the fire-retarding filter element 42 to limit the position of the fire-retarding filter element or can be arranged at one side of the fire-retarding filter element 42, and at the moment, the other side of the fire-retarding filter element 42 is limited through an annular limiting boss arranged on the inner wall of the shell 41.
The sensing device is a pressure sensing device, a temperature sensing device or a magnetic force sensing device. Preferably, the igniter 3 is started by a magnetic force sensing device, the structure of the magnetic force sensing device is the same as that of the existing magnetic force switch, and specifically, the magnetic force sensing device comprises a magnetic piston 211, a magnetic sensor 212 and a spring 213, when the gas in the exhaust pipe 1 does not flow, the magnetic piston 211 is pushed by the spring 213 to sink into the bottom, and the exhaust pipe 1 is sealed. When thermal runaway of the battery occurs, a certain pressure of gas flows through the exhaust pipe 1, the magnetic piston 211 will be pushed to the spring end by the pushing of the gas. When the flow reaches the flow set point, the magnetic piston 211 will be pushed to the sensing range of the magnetic sensor 212 and the magnetic sensor 212 will output a signal to the igniter. When the amount of gas is smaller than the detection signal, the urging force of the spring 213 will push the magnetic piston 211 away from the sensing range of the magnetic sensor 212, and the ignition switch 2 will stop sending the signal.
The ignition switch 2 and the flame arrester 4 in this embodiment are of an integral structure, and the integral structure is compared with the split structure in example 1, only the ignition switch 2 and the flame arrester 4 share one housing, and the structures and the working principles of the internal devices of the two are similar or identical. The integral structure has simplified the structure of whole device, and the integrated level is high, practices thrift the cost by a wide margin, and the assembly of being convenient for has simultaneously reduced the work load of on-the-spot installation.
Example 3
As shown in fig. 5, the present embodiment provides a battery thermal runaway flue gas treatment system, which includes a collecting pipe 7 and a plurality of battery thermal runaway flue gas treatment devices in embodiment 1 or embodiment 2, wherein one end of the collecting pipe 7 is connected to a explosion venting port or explosion venting pipe of at least one battery 6, and the other end is communicated to inlets of a plurality of exhaust pipes 1. The thermal runaway smoke treatment devices of the batteries can fully ignite the thermal runaway smoke generated by the batteries, so that the potential safety hazard that the thermal runaway smoke cannot be ignited by a single igniter is avoided.
When thermal runaway occurs in the electric core in one or more battery cases, the inside high temperature high pressure material of battery can get into manifold 7 through letting out the explosion vent or letting out the explosion tube, and thermal runaway in the manifold 7 gets into blast pipe 1, starts the igniter after the ignition switch sensed thermal runaway flue gas this moment, and the igniter ignites thermal runaway flue gas, makes the security of battery promote.
Claims (10)
1. The battery thermal runaway flue gas treatment device is characterized by comprising an exhaust pipe, an ignition switch, an igniter and a flame arrester;
the igniter is arranged at the outlet of the exhaust pipe and is used for igniting thermal runaway flue gas exhausted by the exhaust pipe;
the ignition switch is arranged on the exhaust pipe and is used for sending a signal to the igniter when the thermal runaway flue gas passes through the exhaust pipe so that the igniter is started;
the flame arrester is arranged on the exhaust pipe and is positioned between the igniter and the ignition switch and used for preventing flame from reversely spreading to damage the ignition switch and the battery.
2. The battery thermal runaway flue gas treatment device according to claim 1, wherein the ignition switch and flame arrester are of an integrated structure, comprising a housing, a flame arrester filter element and an induction device; the shell is internally provided with a smoke channel through which the thermal runaway smoke passes, the fire-retarding filter element and the sensing device are both positioned in the smoke channel, the fire-retarding filter element is arranged close to the outlet end of the smoke channel, and the sensing device is arranged close to the inlet end of the smoke channel.
3. The battery thermal runaway flue gas treatment device of claim 2, wherein the fire barrier filter element is a multi-layer metal mesh structure.
4. A battery thermal runaway flue gas treatment device according to claim 3, wherein the inner wall of the housing is provided with a stop collar for limiting movement of the fire-blocking filter element within the housing.
5. The battery thermal runaway flue gas treatment device according to claim 2, wherein the sensing device is a pressure sensing device, a temperature sensing device or a magnetic force sensing device.
6. The battery thermal runaway flue gas treatment device of claim 1, wherein the ignition switch and the flame arrester are independent devices, the ignition switch is a magnetic switch, and the flame arrester is a pipe flame arrester.
7. The battery thermal runaway flue gas treatment device of claim 6, wherein the magnetic switch, the pipe flame arrestor and the exhaust pipe are threadably connected.
8. The battery thermal runaway flue gas treatment device according to any one of claims 1 to 7, wherein the outlet of the exhaust pipe is further provided with a rain cover.
9. The battery thermal runaway flue gas treatment device of claim 8, wherein the igniter is a pulse igniter.
10. A battery thermal runaway flue gas treatment system comprising a manifold and a plurality of battery thermal runaway flue gas treatment devices according to any one of claims 1 to 9, wherein one end of the manifold is connected to a detonation venting port or detonation venting tube of at least one battery and the other end is in communication with inlets of a plurality of exhaust pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320185840.4U CN219453979U (en) | 2023-02-11 | 2023-02-11 | Battery thermal runaway flue gas processing apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320185840.4U CN219453979U (en) | 2023-02-11 | 2023-02-11 | Battery thermal runaway flue gas processing apparatus and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219453979U true CN219453979U (en) | 2023-08-01 |
Family
ID=87387060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320185840.4U Active CN219453979U (en) | 2023-02-11 | 2023-02-11 | Battery thermal runaway flue gas processing apparatus and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219453979U (en) |
-
2023
- 2023-02-11 CN CN202320185840.4U patent/CN219453979U/en active Active
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