CN211789233U - Safe exhaust device for battery pack - Google Patents
Safe exhaust device for battery pack Download PDFInfo
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- CN211789233U CN211789233U CN202020926527.8U CN202020926527U CN211789233U CN 211789233 U CN211789233 U CN 211789233U CN 202020926527 U CN202020926527 U CN 202020926527U CN 211789233 U CN211789233 U CN 211789233U
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- battery pack
- flame
- exhaust pipeline
- retardant gas
- exhaust
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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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- Battery Mounting, Suspending (AREA)
Abstract
A safe exhaust device for a battery pack is characterized in that one end of an exhaust pipeline is connected to the position of an explosion-proof valve at a pressure relief and ventilation position of the battery pack through a fastening assembly, a first external thread is arranged at the connecting position of the exhaust pipeline and the explosion-proof valve, and flame-retardant gas is filled in the exhaust pipeline; the fastening assembly comprises a fastening bolt and a first sealing gasket, the fastening bolt penetrates through the exhaust pipeline and tightly presses the first sealing gasket at the interface gap between the exhaust pipeline and the battery pack through a first external thread; the flame-retardant gas assembly is connected to the side part of the exhaust pipeline and is used for inputting or outputting flame-retardant gas into or out of the exhaust pipeline; waterproof breather valve is connected in exhaust duct's end, and waterproof breather valve is used for the exhaust outlet as exhaust duct. According to the technical scheme, the problem that secondary fire and explosion risks are caused due to the fact that the battery is out of control due to thermal runaway and sprays flame through the explosion-proof valve is solved, the safety of the battery pack is improved, the escape time of personnel is prolonged, the probability of secondary damage is effectively reduced, the cost is low, and the effect is obvious.
Description
Technical Field
The utility model relates to an exhaust apparatus, concretely relates to safe exhaust apparatus for battery package.
Background
In recent years, with the strong support of the country on new energy automobiles, the application of lithium batteries is more and more, and the safety problem of the lithium batteries is more and more prominent. The battery pack is generally provided with more than one explosion-proof valve. When the battery is thermally out of control, especially the ternary battery generates a large amount of gas including combustible gas H2CO, etc., and combustion-supporting gas O2And the like. The sparks generated by the combustion of the battery in the box are easy to ignite combustible gas when sprayed out along with the gas, so that the flaming phenomenon is generated, the fire is easy to spread, and secondary fire and explosion are caused.
In the prior art, a safety valve connected with an air outlet of a battery pack at one end of a pipeline is proposed, and the other end of the pipeline is connected into liquid of a liquid seal box. There will be a problem like this, and the box relief valve of gas outlet can not be with outside air direct contact, and the effect of relief valve can be influenced.
In addition, the problem that the battery pack is connected with a section of pipeline and the tail end of the battery pack is provided with a waterproof vent valve is solved, so that the battery pack cannot ensure the IP67 to be sealed once the pipeline is broken. Water and dust easily enter the battery pack, causing potential safety hazards.
In addition, it has been proposed that the battery pack be provided with an explosion-proof valve and be connected to a bellows. When the battery, especially the ternary battery thermal runaway, explosion-proof valve bursts, gas and burning solid particles are sprayed from the explosion-proof valve to cause secondary fire or explosion, the corrugated pipe is easy to be damaged and broken, flame escapes from the damaged part, and fire is caused in the vehicle to cause fire spread. In summary, a safety venting solution for a battery pack is needed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a safe exhaust apparatus for battery package solves battery thermal runaway and passes through explosion-proof valve injection flame, causes the risk of secondary fire and explosion, reduces the probability of secondary injury.
In order to achieve the above object, the present invention provides the following technical solutions: a safe exhaust device for a battery pack comprises the battery pack, wherein the battery pack is at least connected with an explosion-proof valve, and further comprises an exhaust pipeline, a fastening assembly, a flame-retardant gas assembly and a waterproof vent valve; one end of the exhaust pipeline is connected to the position of an explosion-proof valve of the battery pack through the fastening assembly, a first external thread is arranged at the connecting position of the exhaust pipeline and the explosion-proof valve, and flame-retardant gas is filled in the exhaust pipeline; the fastening assembly comprises a fastening bolt and a first sealing gasket, the fastening bolt is sleeved on the exhaust pipeline in a penetrating mode, and the fastening bolt tightly presses the first sealing gasket at the interface gap between the exhaust pipeline and the battery pack through the first external threads; the flame-retardant gas assembly is connected to the side part of the exhaust pipeline and is used for inputting or outputting flame-retardant gas into or out of the exhaust pipeline; the waterproof vent valve is connected to the tail end of the exhaust pipeline and used as an exhaust outlet of the exhaust pipeline.
As a preferable aspect of the safety vent for a battery pack, the flame-retardant gas assembly includes a flame-retardant gas interface and a sealing cap; the flame-retardant gas interface is communicated with the exhaust pipeline and is provided with a second external thread, and the sealing cap is screwed with the flame-retardant gas interface through the second external thread.
The preferable scheme of the safety exhaust device for the battery pack further comprises a second sealing gasket and a third sealing gasket, wherein the second sealing gasket is sleeved on the flame-retardant gas interface, and the third sealing gasket is arranged inside the sealing cap.
As a preferred scheme of the safe exhaust device for the battery pack, the exhaust duct is connected with two groups of the flame retardant gas components, and the two groups of the flame retardant gas components are respectively arranged at two ends of the exhaust duct.
As a preferable scheme of the safety exhaust device for the battery pack, two explosion-proof valves are connected with the battery pack, and the exhaust pipeline connects and joins the two explosion-proof valves.
As a preferable aspect of the safety vent for the battery pack, N is used as the flame retardant gas2、CO2And He or Ar, etc. which do not undergo redox reaction with the combustible gas.
As a preferable scheme of the safety vent device for the battery pack, the bursting pressure of the waterproof vent valve is not more than that of the explosion-proof valve on the battery pack.
One end of the exhaust pipeline of the utility model is connected with the explosion-proof valve position of the battery pack through the fastening component, the connecting position of the exhaust pipeline and the explosion-proof valve is provided with a first external thread, and the interior of the exhaust pipeline is filled with flame retardant gas; the fastening assembly comprises a fastening bolt and a first sealing gasket, the fastening bolt penetrates through the exhaust pipeline and tightly presses the first sealing gasket at the interface gap between the exhaust pipeline and the battery pack through a first external thread; the flame-retardant gas assembly is connected to the side part of the exhaust pipeline and is used for inputting or outputting flame-retardant gas into or out of the exhaust pipeline; waterproof breather valve is connected in exhaust duct's end, and waterproof breather valve is used for the exhaust outlet as exhaust duct. The technical scheme can solve the problem that secondary fire and explosion are caused by the fact that the battery is subjected to thermal runaway and sprays flame through the explosion-proof valve, the safety of the battery pack is improved, the escape time of personnel is prolonged, the probability of secondary damage of an external device is effectively reduced, the cost is low, the effect is obvious, compared with the prior art, the explosion-proof valve is communicated with air, the function of the explosion-proof valve is not limited, the sealing structure of the battery pack is not damaged, the sealing grade of the battery pack cannot be influenced even if a pipeline is broken, and the safety and reliability are higher; be provided with flame retardant gas in the exhaust duct, the material that spouts out from explosion-proof valve can not burn and explode in the exhaust duct, makes exhaust duct's structure keep intact, and harmful substance finally passes through outside the waterproof ventilation valve eduction gear of terminal, can not cause secondary fire in the device, and the security improves greatly.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of a safety exhaust device for a battery pack according to the present invention.
In the figure: 1. a battery pack; 2. an explosion-proof valve; 3. an exhaust duct; 4. a fastening assembly; 5. a flame retardant gas component; 6. a waterproof vent valve; 7. a first external thread; 8. a flame-retardant gas; 9. fastening a bolt; 10. a first gasket; 11. a flame retardant gas interface; 12. a sealing cap; 13. a second external thread; 14. a second gasket; 15. and a third gasket.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a safe exhaust device for a battery pack is provided, which comprises a battery pack 1, wherein the battery pack 1 is at least connected with an explosion-proof valve 2, and further comprises an exhaust pipeline 3, a fastening assembly 4, a flame-retardant gas assembly 5 and a waterproof vent valve 6; one end of the exhaust pipeline 3 is connected to the position of the explosion-proof valve 2 of the battery pack 1 through the fastening component 4, a first external thread 7 is arranged at the connecting position of the exhaust pipeline 3 and the explosion-proof valve 2, the exhaust pipeline 3 is filled with flame-retardant gas 8, and the flame-retardant gas 8 can adopt N2、CO2One or more of He and Ar, and other inert gases can be used for replacing the flame retardant gas, and the flame retardant gas does not generate oxidation-reduction reaction with combustible gas. The other end of the exhaust pipeline 3 is connected with the outside of equipment which uses the battery pack 1 as a power source and an energy source, and the exhaust pipeline 3 is a pipeline made of metal materials with fireproof material properties.
Specifically, the fastening assembly 4 comprises a fastening bolt 9 and a first sealing gasket 10, the fastening bolt 9 is sleeved on the exhaust pipeline 3, and the fastening bolt 9 presses the first sealing gasket 10 to the interface gap between the exhaust pipeline 3 and the battery pack 1 through the first external thread 7; the flame-retardant gas assembly 5 is connected to the side part of the exhaust pipeline 3, and the flame-retardant gas assembly 5 is used for inputting or outputting flame-retardant gas 8 into or out of the exhaust pipeline 3; the waterproof vent valve 6 is connected to the tail end of the exhaust pipeline 3, and the waterproof vent valve 6 is used as an exhaust outlet of the exhaust pipeline 3.
Specifically, exhaust duct 3 is connected with two sets of fire-retardant gas subassembly 5, and two sets of fire-retardant gas subassembly 5 sets up respectively at exhaust duct 3's both ends. The battery pack 1 is connected with two explosion-proof valves 2, and the two explosion-proof valves 2 are connected and converged by the exhaust pipeline 3. The flame retardant gas assembly 5 comprises a flame retardant gas interface 11 and a sealing cap 12; the flame-retardant gas interface 11 is communicated with the exhaust pipeline 3, the flame-retardant gas interface 11 is provided with a second external thread 13, and the sealing cap 12 is screwed with the flame-retardant gas interface 11 through the second external thread 13. When the flame-retardant gas 8 needs to be charged and discharged into the exhaust pipeline 3, the sealing cap 12 is opened, the tooling process is installed, and the sealing cap 12 is screwed with the flame-retardant gas interface 11.
Specifically, the flame-retardant gas connector also comprises a second sealing gasket 14 and a third sealing gasket 15, wherein the second sealing gasket 14 is sleeved on the flame-retardant gas connector 11, and the third sealing gasket 15 is arranged inside the sealing cap 12. The second sealing gasket 14 and the third sealing gasket 15 are matched to increase the assembling sealing performance of the sealing cap 12 and the exhaust pipeline 3, so that the flame-retardant gas 8 in the exhaust pipeline 3 is prevented from leaking. Meanwhile, the fastening bolt 9 compresses the first sealing gasket 10 at the interface gap between the exhaust pipeline 3 and the battery pack 1 through the first external thread 7, so that the leakage of the flame-retardant gas 8 from the interface gap is effectively avoided.
Specifically, the bursting pressure of the waterproof vent valve 6 is not more than that of the explosion-proof valve 2 on the battery pack 1. Waterproof ventilation valve 6 sets up the end at exhaust duct 3, a be used for intercommunication exhaust duct 3 and outside air, simultaneously as exhaust outlet of exhaust duct 3, waterproof ventilation valve 6 burst pressure is not more than the burst pressure of battery package 1 explosion-proof valve 2, battery package 1 internal heat is out of control through explosion-proof valve 2 spun gas and solid particulate matter can not burn under the inert environment in exhaust duct 3 yet, exhaust duct 3's structure can not destroy, finally outside 6 eduction gear through terminal waterproof ventilation valve, can not cause secondary fire in the device, the security improves greatly. When the flame-retardant gas 8 needs to be charged and discharged into the exhaust pipeline 3, the sealing cap 12 is opened, the tooling process is installed, and the sealing cap 12 is screwed with the flame-retardant gas interface 11.
One end of an exhaust pipeline 3 of the utility model is connected with the position of an explosion-proof valve 2 of a battery pack 1 through a fastening component 4, a first external thread 7 is arranged at the connecting position of the exhaust pipeline 3 and the explosion-proof valve 2, and flame retardant gas 8 is filled in the exhaust pipeline 3; the fastening assembly 4 comprises a fastening bolt 9 and a first sealing gasket 10, the fastening bolt 9 is sleeved on the exhaust pipeline 3 in a penetrating mode, and the fastening bolt 9 presses the first sealing gasket 10 to the interface gap between the exhaust pipeline 3 and the battery pack 1 through a first external thread 7; a flame retardant gas module 5 is connected to the side of the exhaust duct 3, the flame retardant gas module 5 being used to input or output a flame retardant gas 8 into or out of the exhaust duct 3; the waterproof vent valve 6 is connected to the end of the exhaust duct 3, and the waterproof vent valve 6 is used as an exhaust outlet of the exhaust duct 3. The fastening bolt 9 compresses the first sealing gasket 10 at the interface gap between the exhaust pipeline 3 and the battery pack 1 through the first external thread 7, and effectively prevents the flame-retardant gas 8 from leaking from the interface gap. The second sealing gasket 14 and the third sealing gasket 15 are matched to increase the assembling sealing performance of the sealing cap 12 and the exhaust pipeline 3, so that the flame-retardant gas 8 in the exhaust pipeline 3 is prevented from leaking. The technical scheme can solve the problem that secondary fire and explosion are caused by the fact that the battery is subjected to thermal runaway and sprays flame through the anti-explosion valve 2, the safety of the battery pack 1 is improved, the escape time of personnel is prolonged, the probability of secondary damage of an external device is effectively reduced, the cost is low, the effect is obvious, compared with the prior art, the anti-explosion valve 2 is communicated with air, the function of the anti-explosion valve 2 is not limited, the sealing structure of the battery pack is not damaged, the sealing grade of the battery pack cannot be influenced even if a pipeline is broken, and the anti-explosion valve is safer and more reliable; be provided with flame retardant gas 8 in the exhaust duct 3, the material that spouts out from explosion-proof valve 2 can not burn and explode in exhaust duct 3, makes exhaust duct 3's structure keep intact, and harmful substance is finally outside 6 eduction gear of terminal waterproof breather valve, can not cause secondary fire in the device, and the security improves greatly.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. A safe exhaust device for a battery pack comprises the battery pack (1), wherein the battery pack (1) is at least connected with an explosion-proof valve (2), and is characterized by further comprising an exhaust pipeline (3), a fastening assembly (4), a flame-retardant gas assembly (5) and a waterproof vent valve (6); one end of the exhaust pipeline (3) is connected to the position of the explosion-proof valve (2) of the battery pack (1) through the fastening assembly (4), a first external thread (7) is arranged at the connecting position of the exhaust pipeline (3) and the explosion-proof valve (2), and flame-retardant gas (8) is filled in the exhaust pipeline (3); the fastening assembly (4) comprises a fastening bolt (9) and a first sealing gasket (10), the fastening bolt (9) is sleeved on the exhaust pipeline (3), and the fastening bolt (9) presses the first sealing gasket (10) to an interface gap between the exhaust pipeline (3) and the battery pack (1) through the first external thread (7); the flame-retardant gas assembly (5) is connected to the side part of the exhaust pipeline (3), and the flame-retardant gas assembly (5) is used for inputting or outputting flame-retardant gas (8) into or out of the exhaust pipeline (3); the waterproof vent valve (6) is connected to the tail end of the exhaust pipeline (3), and the waterproof vent valve (6) is used as an exhaust outlet of the exhaust pipeline (3).
2. A safety vent apparatus for a battery pack, according to claim 1, wherein the flame retardant gas assembly (5) comprises a flame retardant gas interface (11) and a sealing cap (12); the flame-retardant gas interface (11) is communicated with the exhaust pipeline (3), the flame-retardant gas interface (11) is provided with a second external thread (13), and the sealing cap (12) is screwed with the flame-retardant gas interface (11) through the second external thread (13).
3. A safety vent apparatus for a battery pack, according to claim 2, further comprising a second gasket (14) and a third gasket (15), wherein said second gasket (14) is sleeved on said flame retardant gas port (11), and said third gasket (15) is disposed inside said sealing cap (12).
4. A safety vent for a battery pack, according to claim 2, wherein two sets of said flame retardant gas components (5) are connected to said vent duct (3), said two sets of said flame retardant gas components (5) being respectively disposed at both ends of the vent duct (3).
5. A safety vent for a battery pack, according to claim 1, wherein two explosion-proof valves (2) are connected to the battery pack (1), and the vent conduit (3) joins the two explosion-proof valves (2).
6. The safety vent for battery pack according to claim 1, wherein the flame retardant gas (8) employs N2、CO2He or Ar.
7. A safety vent apparatus for battery pack according to claim 1, wherein the burst pressure of the waterproof vent valve (6) is not greater than the burst pressure of the burst valve (2) on the battery pack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926527.8U CN211789233U (en) | 2020-05-26 | 2020-05-26 | Safe exhaust device for battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926527.8U CN211789233U (en) | 2020-05-26 | 2020-05-26 | Safe exhaust device for battery pack |
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| CN211789233U true CN211789233U (en) | 2020-10-27 |
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| CN202020926527.8U Active CN211789233U (en) | 2020-05-26 | 2020-05-26 | Safe exhaust device for battery pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7085169B1 (en) | 2020-12-23 | 2022-06-16 | 烟台創為新能源科技股▲ふん▼有限公司 | Battery pack fire extinguishing system |
| EP4044319A4 (en) * | 2020-11-17 | 2022-08-17 | Jiangsu Contemporary Amperex Technology Limited | Fire prevention device, box assembly, battery, electric device, and method for producing battery |
-
2020
- 2020-05-26 CN CN202020926527.8U patent/CN211789233U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4044319A4 (en) * | 2020-11-17 | 2022-08-17 | Jiangsu Contemporary Amperex Technology Limited | Fire prevention device, box assembly, battery, electric device, and method for producing battery |
| KR20220147657A (en) * | 2020-11-17 | 2022-11-03 | 지앙수 컨템포러리 엠퍼렉스 테크놀로지 리미티드 | Fire Fighting Devices, Case Assemblies, Batteries, Electrical Devices and Methods of Manufacturing Batteries |
| JP2023518586A (en) * | 2020-11-17 | 2023-05-02 | ジアンス・コンテンポラリー・アンプレックス・テクノロジー・リミテッド | Firefighting device, housing assembly, battery, power consumption device, and battery manufacturing method |
| EP4228046A1 (en) * | 2020-11-17 | 2023-08-16 | Jiangsu Contemporary Amperex Technology Limited | Fire-fighting apparatus, box assembly, battery, power consumption apparatus, and method for preparing battery |
| EP4239751A1 (en) * | 2020-11-17 | 2023-09-06 | Jiangsu Contemporary Amperex Technology Limited | Fire-fighting apparatus, box assembly, battery, power consumption apparatus, and method for preparing battery |
| EP4239750A1 (en) * | 2020-11-17 | 2023-09-06 | Jiangsu Contemporary Amperex Technology Limited | Fire-fighting apparatus, box assembly, battery, power consumption apparatus, and method for preparing battery |
| US11826593B2 (en) | 2020-11-17 | 2023-11-28 | Jiangsu Contemporary Amperex Technology Limited | Fire-fighting apparatus, box assembly, battery, power consumption apparatus, and method for preparing battery |
| KR102625181B1 (en) | 2020-11-17 | 2024-01-16 | 지앙수 컨템포러리 엠퍼렉스 테크놀로지 리미티드 | Fire fighting devices, case assemblies, batteries, electrical devices and methods of manufacturing batteries |
| JP7483920B2 (en) | 2020-11-17 | 2024-05-15 | ジアンス・コンテンポラリー・アンプレックス・テクノロジー・リミテッド | Firefighting device, housing assembly, battery, power consuming device and method for manufacturing battery |
| JP7085169B1 (en) | 2020-12-23 | 2022-06-16 | 烟台創為新能源科技股▲ふん▼有限公司 | Battery pack fire extinguishing system |
| JP2022100182A (en) * | 2020-12-23 | 2022-07-05 | 烟台創為新能源科技股▲ふん▼有限公司 | Fire extinguishing system for battery pack |
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