CN218523576U - Battery thermal runaway flue gas processing apparatus, battery and battery pack - Google Patents
Battery thermal runaway flue gas processing apparatus, battery and battery pack Download PDFInfo
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- CN218523576U CN218523576U CN202222329729.6U CN202222329729U CN218523576U CN 218523576 U CN218523576 U CN 218523576U CN 202222329729 U CN202222329729 U CN 202222329729U CN 218523576 U CN218523576 U CN 218523576U
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- 239000003546 flue gas Substances 0.000 title claims abstract description 142
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 238000012545 processing Methods 0.000 title claims abstract description 16
- 238000004880 explosion Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 26
- 239000000919 ceramic Substances 0.000 claims description 25
- 238000013022 venting Methods 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 22
- 238000010891 electric arc Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- -1 iron-chromium-aluminum Chemical compound 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
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- 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
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Abstract
The utility model provides a battery thermal runaway flue gas processing apparatus, battery and group battery mainly solves the problem that current battery thermal runaway flue gas treatment mode was handled not thoroughly and had the potential safety hazard. The battery thermal runaway flue gas treatment device comprises an igniter, a trigger device and a flue gas pipeline; the trigger device comprises a control circuit board and a sensor, wherein the output end of the sensor is connected with the control circuit board and used for outputting a signal to the control circuit board when the battery is out of control due to thermal runaway, and the control circuit board outputs an ignition current according to the signal; the igniter is an arc igniter or a resistance wire igniter, is arranged on the flue gas pipeline and can ignite the thermal runaway flue gas exhausted by the flue gas pipeline. The device can ignite the smoke generated by thermal runaway of the battery in time, and the pollution of the discharged thermal runaway smoke to the atmosphere is avoided; meanwhile, the thermal runaway smoke is prevented from being collected in the battery, and dangerous events such as explosion, fire and the like occur, so that the safety of the battery is greatly improved.
Description
Technical Field
The utility model belongs to the battery field, concretely relates to battery thermal runaway flue gas processing apparatus, battery and group battery.
Background
With the further development of the field of energy storage of lithium ion batteries in recent years, the safe use of lithium ion batteries is also concerned. Due to the principle and structural characteristics of the lithium ion battery, large heat is generated due to internal resistance heating in the repeated use process, and if the accumulated heat is not effectively dissipated, the temperature can be further increased. When the temperature reaches the limit, the thermal balance of the battery is damaged, a series of self-heating side reactions are initiated, a large amount of combustible gas is generated, a thermal runaway phenomenon occurs, and finally the internal ignition of the battery can be caused, and explosion is caused in severe cases, so that potential safety hazards are caused.
The Chinese patent application CN110299486A discloses a battery safety box and a safety charging cabinet with the same, wherein the battery safety box comprises a box body, the box body is provided with a containing cavity, a first exhaust port and a first discharge pipe, and the first exhaust port is communicated with the containing cavity; one end and the first gas vent intercommunication of first discharge pipe, the other end and the safe space intercommunication that discharges of first discharge pipe. Place the box with the battery, the box can play the protection and with the outside effect of keeping apart, if the battery takes place the first gas vent of thermal runaway accessible and first exhaust pipe with high-temperature gas outgoing, avoid high-temperature high-pressure gas to gather in finite space and take place danger. The battery safety box can improve the safety of the battery during storage and charging. However, the high-temperature flue gas is discharged, the risk of explosion inside the battery is avoided, the high-temperature flue gas is not thoroughly treated, and the discharged high-temperature flue gas is discharged to the external environment to cause pollution and have the risk of secondary explosion.
Chinese patent application CN209730109U discloses a battery thermal current is taken out from device initiatively, it is including the battery case that is used for wrapping up inside electric core and the mechanism of bleeding that pumps the thermal current, be provided with high temperature resistant mica baffle on battery case's the inside seal and the inner wall, battery case is external to have the blast pipe, the one end intercommunication of blast pipe is to battery case's inside, the other end is connected to the mechanism of bleeding, filtering mechanism has set gradually after to from before on the blast pipe, cooling mechanism and first explosion-proof valve, the last second explosion-proof valve that is provided with of battery case. The above-mentioned device adopts the mode of initiatively bleeding to handle thermal runaway's battery, filters and cools off the thermal current through filter mechanism and cooling body, and effective control exhaust gas temperature and quality, however, the device also can't thoroughly handle thermal runaway flue gas, still has certain pollution to the environment.
Disclosure of Invention
The problem that the flue gas treatment mode was not thoroughly handled and had the potential safety hazard for solving current battery thermal runaway is solved, the utility model provides a battery thermal runaway flue gas processing apparatus, battery and group battery.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a battery thermal runaway flue gas treatment device comprises an igniter, a trigger device and a flue gas pipeline; the trigger device comprises a control circuit board and a sensor, the sensor is arranged on the flue gas pipeline or the battery shell, the output end of the sensor is connected with the control circuit board, and is used for outputting a signal to the control circuit board when the battery is out of control due to heat, and the control circuit board outputs an ignition current according to the signal; the igniter is an arc type igniter or a resistance wire igniter, is arranged on the flue gas pipeline and can ignite the thermal runaway flue gas exhausted by the flue gas pipeline under the ignition current output by the control circuit board.
Further, the resistance wire igniter comprises an igniter housing and a resistance wire; the ignition device is characterized in that an ignition cavity communicated with a flue gas pipeline is formed in the igniter shell, the resistance wire is arranged in the ignition cavity, and two ends of the resistance wire are connected with a control circuit board outside the igniter shell.
Further, the arc igniter includes an igniter housing, a first wire electrode, and a second wire electrode; the utility model discloses an ignition device, including some firearm casing, be provided with the ignition chamber with flue gas pipeline intercommunication in the some firearm casing, the one end of first wire electrode and the one end setting of second wire electrode are at the ignition intracavity, and are provided with the ionization clearance between the two, the other end setting of first wire electrode and second wire electrode is outside the lighter casing, is connected with control circuit board.
Further, electric arc formula point firearm and resistance wire point firearm still include ceramic clamping ring and pottery clamping ring, be provided with the annular groove in the pottery clamping ring, resistance wire, first electrode silk or second electrode silk set up in the annular groove, and are compressed tightly by the pottery clamping ring.
Furthermore, an oscillating circuit is arranged on the control circuit board and used for converting direct current into alternating current, and a boosting coil is arranged between the arc type igniter and the control circuit board and used for boosting the alternating current output by the control circuit board and transmitting the boosted alternating current to the first electrode wire and the second electrode wire.
Further, the triggering device includes at least one of a pressure sensor, a gas sensor, or a temperature sensor.
Further, the pressure sensor, the gas sensor or the temperature sensor are arranged on the flue gas pipeline through a three-way pipe.
Further, the flue gas pipeline comprises a flue gas main pipe and a plurality of flue gas branch pipes; the inlets of the plurality of flue gas branch pipes are communicated with the outlet of the flue gas main pipe, and the outlets of the plurality of flue gas branch pipes are provided with igniters.
And simultaneously, the utility model also provides a battery, including above-mentioned battery thermal runaway flue gas processing apparatus, the import of flue gas pipeline and battery case let out the mouth of exploding or let out the union coupling of exploding.
Furthermore, the utility model also provides a battery pack, including collector pipe, a plurality of batteries and above-mentioned battery thermal runaway flue gas processing apparatus, a plurality of batteries are parallelly connected, the one end of collector pipe and a plurality of battery case let out explode mouthful or let out explode the union coupling, the other end and flue gas pipeline's access connection.
Compared with the prior art, the utility model discloses technical scheme has following advantage:
the utility model discloses a battery thermal runaway flue gas treatment device comprises an igniter, a trigger device and a flue gas pipeline; the trigger device comprises a control circuit board and a sensor, the sensor is used for outputting a signal to the control circuit board when the battery is out of control due to heat, and the control circuit board outputs an ignition current according to the signal; the igniter is arranged on the flue gas pipeline and can ignite the thermal runaway flue gas exhausted by the flue gas pipeline under the ignition current output by the control circuit board. The device can ignite the smoke generated by thermal runaway of the battery in time, and the pollution of the discharged thermal runaway smoke to the environment is avoided; meanwhile, the thermal runaway smoke is prevented from being collected in the battery, and dangerous events such as explosion, fire and the like occur, so that the safety of the battery is greatly improved. In addition, the igniter is an electric arc type igniter or a resistance wire igniter, the electric arc type igniter or the resistance wire igniter is a continuous ignition device, and the phenomenon that wind or rain in an external environment influences the performance of the igniter is avoided, so that the risk that thermal runaway smoke cannot be ignited in time is avoided.
Additional advantages, objects, and features of the invention 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 invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a battery thermal runaway flue gas treatment device in embodiment 1 of the present invention;
FIG. 2 is a sectional view of an arc type igniter according to embodiment 1 of the present invention;
FIG. 3 is a plan view of an arc type igniter according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a battery thermal runaway flue gas treatment device in embodiment 2 of the present invention;
FIG. 5 is a cross-sectional view of a resistance wire igniter according to embodiment 2 of the present invention;
FIG. 6 is a top view of a resistance wire igniter according to embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a flue gas duct in embodiment 4 of the present invention;
fig. 8 is a first schematic structural diagram of a battery pack according to embodiment 4 of the present invention;
fig. 9 is a second schematic structural diagram of a battery pack according to embodiment 4 of the present invention.
Reference numerals: 1-igniter, 2-trigger device, 3-flue gas pipeline, 4-three-way pipe, 5-battery, 6-explosion venting port or explosion venting pipe, 7-collecting pipe, 11-electric arc type igniter, 12-resistance wire igniter, 111-igniter shell, 112-first electrode wire, 113-second electrode wire, 114-ignition cavity, 115-ionization gap, 116-ceramic press ring, 117-ceramic press ring, 118-booster coil, 121-resistance wire, 21-control circuit board, 22-sensor, 31-flue gas main pipe and 32-flue gas branch pipe.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The utility model provides a battery thermal runaway flue gas treatment device, which comprises an igniter, a trigger device and a flue gas pipeline; the trigger device comprises a control circuit board and a sensor, the sensor is arranged on the flue gas pipeline or the battery shell, the output end of the sensor is connected with the control circuit board and used for outputting a signal to the control circuit board when the battery is out of control due to heat, and the control circuit board outputs an ignition current according to the signal; the igniter is an electric arc type igniter or a resistance wire igniter, the igniter is arranged on the flue gas pipeline, and the thermal runaway flue gas exhausted by the flue gas pipeline is ignited under the ignition current output by the control circuit board. The device can ignite the smoke generated by thermal runaway of the battery in time, and avoid the pollution of the generated thermal runaway smoke to the environmental atmosphere; meanwhile, the thermal runaway smoke is prevented from being collected in the battery, and dangerous events such as explosion, fire and the like occur, so that the safety of the battery is greatly improved. The igniter of the device is an electric arc type igniter or a resistance wire igniter, the electric arc type igniter or the resistance wire igniter is a sustainable ignition device, and the condition that wind or rain in an external environment influences the performance of the igniter can be avoided, so that the risk that thermal runaway smoke cannot be reliably ignited is avoided.
The utility model discloses the device does not inject resistance wire point firearm's structure, as long as can in time reliably light the thermal runaway flue gas that the battery produced can. For example, the resistance wire igniter comprises an igniter shell, a resistance wire, a ceramic compression ring and a ceramic compression ring; an ignition cavity communicated with the flue gas pipeline is arranged in the igniter shell, the resistance wire is arranged in the ignition cavity, and the resistance wire is connected with a control circuit board outside the igniter shell. Specifically, be provided with the annular groove in the ceramic clamping ring, the resistance wire sets up in the annular groove, and is compressed tightly by the pottery clamping ring for the resistance wire passes through ceramic clamping ring and pottery clamping ring and installs in some firearm casing, and ceramic clamping ring and pottery clamping ring are the insulating part, realize some firearm casing and the good insulation between the resistance wire. The resistance wire igniter is simple in structure, does not need circuit elements such as a booster and an oscillator, is arranged in a flue gas pipeline, and can also be used as a windproof electric heating wire, so that battery thermal runaway flue gas is reliably ignited.
The structure of the arc type igniter in the device can be various. For example, an electric arc igniter includes an igniter housing, a first wire electrode, a second wire electrode, a ceramic press ring, and a ceramic press ring; be provided with the ignition chamber with flue gas pipeline intercommunication in the some firearm casing, the one end of first wire electrode and the one end setting of second wire electrode are at the ignition intracavity, and are provided with the ionization clearance between the two, and the other end of first wire electrode, second wire electrode all is connected with control circuit board through high temperature wire. In addition, an oscillating circuit is arranged on the control circuit board and used for converting direct current into alternating current, and a boosting coil is arranged between the arc type igniter and the control circuit board and used for boosting the alternating current output by the control circuit board and transmitting the boosted alternating current to the first electrode wire and the second electrode wire, ionizing air in the space, and further generating electric arcs. In the device, be provided with the annular groove in the pottery clamping ring, first wire electrode and second wire electrode setting are in the annular groove, and are compressed tightly by the ceramic clamping ring for first wire electrode, second wire electrode pass through ceramic clamping ring and install in some firearm casing, and pottery clamping ring and ceramic clamping ring are the insulating part, can prevent first wire electrode, second wire electrode and some firearm casing contact, realize some good insulation between firearm casing and the wire electrode. The voltage of the booster circuit (namely the booster coil) of the arc type igniter is about 100kv and is far higher than that of a pulse type igniter, so that the arc type igniter has the characteristics of high arc starting speed, high ignition speed and the like, and the thermal runaway flue gas can be quickly ignited by a battery in time.
The utility model discloses trigger device can be the sensor of isostructure, as long as can be when the battery thermal runaway send signal can, carry out real-time detection to temperature, pressure or gas volume fraction isoparametric when the battery thermal runaway promptly, can send signal when exceeding the settlement threshold value, this signal can be for signal of telecommunication or mechanical signal etc.. Specifically, the sensor may be at least one of a pressure sensor, a gas sensor, and a temperature sensor, and the pressure sensor, the gas sensor, and the temperature sensor may be disposed on the flue gas duct or the battery case. During the field installation, pressure sensor, gas sensor or temperature sensor pass through the three-way pipe setting on flue gas pipeline, perhaps pass through threaded connection on battery case, and this kind of installation can direct short-term test thermal runaway flue gas, can reliably detect at battery thermal runaway inception or initial stage to can in time handle battery thermal runaway flue gas.
In order to realize the reliable ignition of the battery thermal runaway smoke, a plurality of igniters can be arranged, and at the moment, the smoke pipeline comprises a smoke main pipe and a plurality of smoke branch pipes; the inlets of the plurality of flue gas branch pipes are communicated with the outlet of the flue gas main pipe, and the outlets of the plurality of flue gas branch pipes are provided with igniters. Correspondingly, the number of the triggering devices is also multiple, and the multiple triggering devices are arranged on the multiple smoke branch pipes in a one-to-one correspondence mode. Meanwhile, the main flue gas pipe or the branch flue gas pipe is also provided with an anti-backfire device which can be an anti-backfire valve and is used for preventing the thermal runaway flue gas in the main flue gas pipe or the branch flue gas pipe from flowing back. When the igniter is installed and used specifically, the number of the smoke branch pipes and the number of the igniters can be set according to the number and requirements of batteries, and can be set to 2, 3, 4, \8230, 10 and the like, the ignition reliability can be ensured by setting the number of the branch pipes and the igniters to 2 or more, and when one igniter fails or fails, other igniters can work normally.
The utility model also provides a battery, including above-mentioned battery thermal runaway flue gas processing apparatus, the import of flue gas pipeline and battery case let out explode mouthful or let out the union coupling of exploding. Furthermore, the utility model provides a group battery, including collector pipe, a plurality of batteries and foretell battery thermal runaway flue gas processing apparatus, a plurality of batteries are parallelly connected or establish ties, and the one end of collector pipe and a plurality of battery case let out explode mouthful or let out explode the union coupling, the other end and flue gas pipeline's access connection.
Example 1
As shown in fig. 1 to fig. 3 and fig. 8, the battery thermal runaway flue gas treatment device provided by this embodiment includes an igniter 1, a trigger device 2 and a flue gas pipeline 3; the trigger device 2 comprises a control circuit board 21 and a sensor 22, the sensor 22 is arranged on the flue gas pipeline 3 or the battery shell, the output end of the sensor 22 is connected with the control circuit board 21 and is used for outputting a signal to the control circuit board 21 when the battery is out of control due to thermal runaway, and the control circuit board 21 outputs an ignition current according to the signal; the igniter 1 is an arc type igniter 11, is arranged on the flue gas pipeline 3, and ignites battery thermal runaway flue gas discharged by the flue gas pipeline 3 under the ignition current output by the control circuit board 21. The sensor 22 is specifically one of a pressure sensor, a gas sensor or a temperature sensor, and the pressure sensor, the gas sensor or the temperature sensor is arranged on the flue gas pipeline 3 through a three-way pipe 4 or is connected to the flue gas pipeline 3 through threads.
The arc igniter 11 in the present embodiment includes an igniter housing 111, a first wire electrode 112, a second wire electrode 113, a ceramic pressing ring 116, a ceramic pressing ring 117, and a booster coil 118; an ignition cavity 114 communicated with the flue gas pipeline 3 is arranged in the igniter shell 111, one end of the first electrode wire 112 and one end of the second electrode wire 113 are arranged in the ignition cavity 114, an ionization gap 115 is arranged between the first electrode wire and the second electrode wire, and the other ends of the first electrode wire 112 and the second electrode wire 113 are arranged outside the igniter shell 111 and are connected with the control circuit board 21. An annular groove is formed in the ceramic pressing ring 116, and the first wire electrode 112 and the second wire electrode 113 are arranged in the annular groove and are pressed by the ceramic pressing ring 117. In addition, an oscillating circuit is arranged on the control circuit board 21 and used for converting direct current into alternating current, and a boosting coil 118 is arranged between the arc type igniter 11 and the control circuit board 21 and used for boosting the alternating current output by the control circuit board and transmitting the boosted alternating current to the first electrode wire and the second electrode wire, ionizing air between the first electrode wire and the second electrode wire and generating electric arcs.
The battery thermal runaway flue gas processing device in the embodiment is an automatic control arc type ignition device, the device is installed at the end part of a flue gas pipeline 3, when a sensor 22 detects that combustible gas exists in the flue gas pipeline 3, a signal is fed back to a control circuit board 21, the control circuit board 21 is connected with a battery and a booster coil 118, after the booster coil 118 boosts voltage, air between electric arc generation heads close to each other is ionized to form electric arcs, and the combustible gas exhausted from the flue gas pipeline 3 is ignited. That is, when the battery is out of control thermally, and there is gas flowing through the flue gas pipe 3, the pressure sensor detects pressure change in the flue gas pipe 3 (or the gas sensor detects that combustible gas flows through, or the temperature sensor detects that the temperature rises sharply), the sensor 22 transmits a signal to the control circuit board 21, after the control circuit board 21 receives the signal, the relay is closed, direct current of the battery 5 is converted into alternating current through oscillating current (or an oscillator) on the control circuit board 21 and is output into the voltage boosting coil 118, the current is boosted to 50KV high voltage instantaneously through the voltage boosting coil 118, and then is transmitted to the first wire electrode 112 and the second wire electrode 113 of the igniter 1 through the high temperature wire, when the distance between the two first wire electrodes 112 and the second wire electrode 113 is less than 8mm, the air between the first wire electrode 112 and the second wire electrode 113 is ionized by the instantaneous high voltage, an electric arc is generated, and the combustible gas in the flue gas pipe 3 can be ignited when the electric arc is encountered.
In the electric arc type igniter 11 of the present embodiment, the first wire electrode 112 and the second wire electrode 113 are made of an alloy such as a copper-chromium alloy or a copper-tungsten alloy. Compared with an electric pulse igniter, the electric arc igniter 11 has the characteristics of high arc starting speed, high ignition speed and the like because the voltage of the booster circuit is about 100kv and is far higher than that of the pulse igniter.
Example 2
As shown in fig. 4 to 6 and 9, the battery thermal runaway flue gas treatment device provided by the present embodiment includes an igniter 1, a trigger device 2 and a flue gas pipeline 3; the trigger device 2 comprises a control circuit board 21 and a sensor 22, the sensor 22 is arranged on the flue gas pipeline 3 or the battery shell, the output end of the sensor 22 is connected with the control circuit board 21 and is used for outputting a signal to the control circuit board 21 when the battery is out of control due to thermal runaway, and the control circuit board 21 outputs an ignition current according to the signal; the igniter 1 is a resistance wire igniter 12, the igniter 1 is arranged on the flue gas pipeline 3, and the thermal runaway flue gas in the flue gas pipeline 3 is ignited under the ignition current output by the control circuit board 21.
The resistance wire igniter 12 in the present embodiment includes an igniter housing 111, a resistance wire 121, a ceramic pressing ring 116, and a ceramic pressing ring 117; an ignition cavity 114 communicated with the smoke pipeline 3 is arranged in the igniter shell 111, the resistance wire 121 is arranged in the ignition cavity 114, and two ends of the resistance wire 121 are connected with the control circuit board 21 outside the igniter shell 111. An annular groove is formed in the ceramic pressing ring 116, and the resistance wire 121 is arranged in the annular groove and is pressed tightly by the ceramic pressing ring 117. The resistance wire 121 in the resistance wire igniter 12 is made of iron-chromium-aluminum resistance wire or nickel-chromium resistance wire or the like. Compared with an electric pulse type igniter, the resistance wire igniter 12 has the characteristics of simple structure, no need of circuit elements such as a booster, an oscillator and the like, and can be used as a windproof electric heating wire when being arranged in the flue gas pipeline 3.
The battery thermal runaway flue gas processing device provided by the embodiment is an automatic control resistance wire ignition device which is arranged in a flue gas pipeline 3, when combustible gas is detected in the flue gas pipeline 3, a signal is sent to a control circuit board 21, the control circuit board 21 is connected with a resistance wire 121, the resistance wire 121 is rapidly heated to reach the combustible temperature of the gas, and the gas can be ignited, so that the gas is prevented from being accumulated in a large amount. The device can ignite the smoke generated by the thermal runaway of the battery in time, and prevent the discharged thermal runaway smoke from polluting the atmosphere; meanwhile, the thermal runaway smoke is prevented from being accumulated in the battery, and dangerous events such as explosion, fire and the like occur, so that the safety of the battery is greatly improved.
Example 3
The present embodiment provides a battery, including the battery thermal runaway flue gas processing apparatus in embodiment 1 or embodiment 2, and an inlet of a flue gas main pipe of the battery thermal runaway flue gas processing apparatus is connected to an explosion venting port or an explosion venting pipe of a battery case. When the electric core in the battery shell is out of control due to heat, the explosion venting port or the explosion venting pipe is opened, the high-temperature substance in the battery can enter the flue gas main pipe through the explosion venting port or the explosion venting pipe, the trigger device senses the out-of-control flue gas and then starts the igniter, and the igniter ignites the out-of-control flue gas. In order to further increase the safety, a cooling device can be connected to the explosion venting port or the explosion venting pipe of the battery shell, cooling materials are filled in the cooling device, and the thermal runaway smoke is ignited through the device after being cooled and adsorbed.
Example 4
As shown in fig. 7 to 9, the present embodiment provides a battery pack, including the battery thermal runaway flue gas processing apparatus in embodiment 1 or embodiment 2, a plurality of batteries 5 and a collecting pipe 7, the flue gas pipeline 3 includes a flue gas main pipe 31 and a plurality of flue gas branch pipes 32, an inlet of the flue gas main pipe 31 is connected to an explosion venting port of a plurality of battery cases or an explosion venting pipe 6 through the collecting pipe 7, that is, one end of the collecting pipe 7 is connected to the explosion venting port of the plurality of battery cases, and the other end is connected to an inlet of the flue gas main pipe 31, outlets of the plurality of flue gas branch pipes 32 are provided with igniters, and at the same time, the plurality of flue gas branch pipes 32 are provided with sensors. When a plurality of batteries 5 are out of control due to heat, the explosion venting port or the explosion venting pipe 6 is opened, high-temperature substances inside the batteries 5 enter the main flue gas pipe 31 and the branch flue gas pipes 32 through the explosion venting port or the explosion venting pipe 6, the trigger device 2 starts an igniter after sensing the out of control due to heat, and the igniter ignites the out of control due to heat of the batteries.
Claims (10)
1. A battery thermal runaway flue gas treatment device is characterized by comprising an igniter, a trigger device and a flue gas pipeline;
the trigger device comprises a control circuit board and a sensor, the sensor is arranged on the flue gas pipeline or the battery shell, the output end of the sensor is connected with the control circuit board, and the sensor is used for outputting a signal to the control circuit board when the battery is out of control due to heat, and the control circuit board outputs an ignition current according to the signal;
the igniter is an arc type igniter or a resistance wire igniter, is arranged on the flue gas pipeline and can ignite the thermal runaway flue gas exhausted by the flue gas pipeline under the ignition current output by the control circuit board.
2. The battery thermal runaway flue gas treatment device of claim 1, wherein the resistance wire igniter comprises an igniter housing and a resistance wire; the ignition device is characterized in that an ignition cavity communicated with a flue gas pipeline is formed in the igniter shell, the resistance wire is arranged in the ignition cavity, and two ends of the resistance wire are connected with a control circuit board outside the igniter shell.
3. The battery thermal runaway flue gas treatment device of claim 1, wherein the arc igniter comprises an igniter housing, a first wire electrode and a second wire electrode; the utility model discloses an ignition device, including some firearm casing, be provided with the ignition chamber with flue gas pipeline intercommunication in the some firearm casing, the one end of first wire electrode and the one end setting of second wire electrode are at the ignition intracavity, and are provided with the ionization clearance between the two, the other end setting of first wire electrode and second wire electrode is outside the lighter casing, is connected with control circuit board.
4. The battery thermal runaway flue gas processing device according to claim 2 or 3, wherein the arc type igniter and the resistance wire igniter further comprise a ceramic compression ring and a ceramic pressing ring, an annular groove is formed in the ceramic compression ring, and the resistance wire, the first electrode wire or the second electrode wire are arranged in the annular groove and are compressed by the ceramic pressing ring.
5. The battery thermal runaway flue gas processing device of claim 4, wherein the control circuit board is provided with an oscillation circuit for converting direct current into alternating current, and a boost coil is arranged between the arc type igniter and the control circuit board for boosting the alternating current output by the control circuit board and transmitting the boosted alternating current to the first electrode wire and the second electrode wire.
6. The battery thermal runaway flue gas treatment device of any of claims 1 to 3, wherein the triggering device comprises at least one of a pressure sensor, a gas sensor, or a temperature sensor.
7. The battery thermal runaway flue gas treatment device of claim 6, wherein the pressure sensor, gas sensor or temperature sensor is arranged on the flue gas pipeline through a tee.
8. The battery thermal runaway flue gas treatment device of any one of claims 1 to 3, wherein the flue gas duct comprises a main flue gas duct and a plurality of branch flue gas ducts; the inlets of the plurality of flue gas branch pipes are communicated with the outlet of the flue gas main pipe, and the outlets of the plurality of flue gas branch pipes are provided with igniters.
9. A battery, characterized in that, it includes the battery thermal runaway flue gas treatment device as claimed in any one of claims 1 to 8, and the inlet of the flue gas pipeline is connected with the explosion venting port or the explosion venting pipe of the battery casing.
10. A battery pack, which is characterized by comprising a collecting pipe, a plurality of batteries and the battery thermal runaway flue gas treatment device as claimed in any one of claims 1 to 8, wherein the batteries are connected in parallel, one end of the collecting pipe is connected with explosion venting ports or explosion venting pipes of a plurality of battery shells, and the other end of the collecting pipe is connected with an inlet of a flue gas pipeline.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222329729.6U CN218523576U (en) | 2022-09-01 | 2022-09-01 | Battery thermal runaway flue gas processing apparatus, battery and battery pack |
| PCT/CN2022/121982 WO2023051568A1 (en) | 2021-09-29 | 2022-09-28 | Treatment apparatus for thermal runaway flue gas in battery, treatment method, battery group, and battery pack |
| AU2022355963A AU2022355963A1 (en) | 2021-09-29 | 2022-09-28 | Thermal Runaway Flue Gas Treatment Apparatus for Battery, Treatment Method, Battery Group, and Battery Pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222329729.6U CN218523576U (en) | 2022-09-01 | 2022-09-01 | Battery thermal runaway flue gas processing apparatus, battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218523576U true CN218523576U (en) | 2023-02-24 |
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ID=85244407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222329729.6U Active CN218523576U (en) | 2021-09-29 | 2022-09-01 | Battery thermal runaway flue gas processing apparatus, battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218523576U (en) |
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2022
- 2022-09-01 CN CN202222329729.6U patent/CN218523576U/en active Active
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