CN115531770B - Power battery fire extinguishing mechanism - Google Patents
Power battery fire extinguishing mechanism Download PDFInfo
- Publication number
- CN115531770B CN115531770B CN202210332096.6A CN202210332096A CN115531770B CN 115531770 B CN115531770 B CN 115531770B CN 202210332096 A CN202210332096 A CN 202210332096A CN 115531770 B CN115531770 B CN 115531770B
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- Prior art keywords
- capsule
- fire suppression
- fire
- rows
- capsules
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/08—Containers destroyed or opened by bursting charge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a power battery fire extinguishing mechanism, which comprises a storage chamber, wherein a plurality of fire suppression capsule assemblies distributed along the up-down direction are arranged in the storage chamber, each fire suppression capsule assembly comprises a fixed extrusion strip, a row of fire suppression capsule rows, sharp devices for breaking all the fire suppression capsules in the fire suppression capsule rows and a driving mechanism for driving the sharp devices to move towards the fire suppression capsule rows when the temperature rises, a front-back capsule storage channel capable of storing only one row of the fire suppression capsule rows is formed between the fixed extrusion strip and the sharp devices, and the fire suppression capsules in the fire suppression capsule rows are arranged in the front-back capsule storage channel along the front-back direction; a fire extinguishing agent outflow space is arranged between the fire suppression capsule component and the side wall of the storage chamber. The invention provides a power battery fire extinguishing mechanism which is timely in response and can automatically extinguish fire, which is used for replacing the existing mode of automatically extinguishing fire by adding a flame retardant to a protective power battery so as to improve the reliability of the power battery during self-extinguishing.
Description
Technical Field
The invention relates to the field of power batteries, in particular to a power battery fire extinguishing mechanism.
Background
With the wide application of the storage battery in the fields of electric bicycles, energy storage, electric automobiles and the like, related fire and explosion accidents frequently occur, and serious threat is caused to life safety and property safety of users, and the battery used on the vehicle is called a power battery.
The prior measure for improving the safety of the power battery is to add a flame retardant into the electrolyte. However, this measure has a plurality of limitations, firstly, in order not to affect the performance of the ion battery, too much flame retardant cannot be added, and the flame retardant effect is general; and secondly, the flame retardant cannot inhibit the gas production reaction in thermal runaway. There is thus an urgent need to have a fire extinguishing device or power cell that can automatically extinguish a fire from the power cell.
Disclosure of Invention
The invention provides a power battery fire extinguishing mechanism which is timely in response and can automatically extinguish fire, which is used for replacing the existing mode of automatically extinguishing fire by adding a flame retardant to a protective power battery so as to improve the reliability of the power battery during self-extinguishing.
The technical problems are solved by the following technical proposal: the power battery fire extinguishing mechanism comprises a storage chamber, wherein a plurality of fire suppression capsule assemblies distributed along the up-down direction are arranged in the storage chamber, each fire suppression capsule assembly comprises a fixed extrusion strip, a row of fire suppression capsule rows, sharp devices for breaking all the fire suppression capsules in the fire suppression capsule rows and a driving mechanism for driving the sharp devices to move towards the fire suppression capsule rows when the temperature rises, the fixed extrusion strips and the sharp devices are distributed on two sides of the fire suppression capsule rows, a front-back capsule storage channel capable of storing only one row of the fire suppression capsule rows is formed between the fixed extrusion strips and the sharp devices, and the fire suppression capsules in the fire suppression capsule rows are arranged in the front-back capsule storage channel along the front-back direction; a fire extinguishing agent outflow space is arranged between the fire suppression capsule component and the side wall of the storage chamber. When the fire disaster prevention capsule is used, the battery is covered in a mode that the opening end of the storage chamber faces the battery, when the temperature of the battery rises due to fire disaster, the fire disaster prevention capsule is heated and broken, and meanwhile, the driving mechanism is used as a driving tool to enable the fire disaster prevention capsule to be broken, so that the reliability of the fire disaster prevention capsule in breaking is improved.
Preferably, the sharp tool is a knife bar with a cutting edge facing the fire suppression capsules in the fire suppression capsule row.
Preferably, the outer surface of the fire suppression capsule is provided with a capsule part annular groove extending along the circumferential direction of the fire suppression capsule, and the cutting edge is aligned with the capsule part annular groove. The reliability of the capsule can be improved when the knife bar cuts the slope and fire disaster is restrained.
Preferably, the annular groove of the capsule portion has a wall thickness smaller than the wall thickness of the fire suppressing capsule housing at both sides of the annular groove of the capsule portion. The reliability of the capsule for suppressing fire can be further improved.
Preferably, the cutting edge is arranged in the annular groove of the capsule part in a penetrating way, and the knife bar is positioned below the fire suppression capsule group. The fire suppressing capsule can be prevented from being displaced.
As another preferable aspect, the sharp instrument is a root needle aligned in one-to-one correspondence with the fire suppression capsules in the fire suppression capsule row. The force required to puncture the fire suppression capsule is small. Response sensitivity is improved.
Preferably, the fire suppression capsule assembly further comprises a supporting strip, the fixed extrusion strip is located above the fire suppression capsule group, the fire suppression capsules in the fire suppression capsule rows are tiled on the supporting strip, the needle tips of the needles face upwards, and the whole needles are located below the upper surface of the supporting strip. The occurrence of erroneous operation can be prevented. The fire suppression capsule is positioned above the needle of the sharp tool, so that the fire suppression capsule can be prevented from being punctured by the needle by mistake when the driving mechanism loses the fixing effect on the needle.
Preferably, the needle comprises a cylindrical body, the needle tip being coaxially attached to the cylindrical body, the cylindrical body being slidably received within a slide aperture in the carrier strip, the cylindrical body being attached to the slide Kong Di. When the diameter of the needle is small, the needle can be prevented from bending in the process of piercing the fire suppression capsule, so that the reliability is poor when the fire suppression capsule is broken.
Preferably, the driving mechanism comprises a fixed connecting block provided with a sealed air cavity, the fixed connecting block is provided with a plurality of air holes which are used for communicating the sealed air cavity with the outside of the fixed connecting block, a driving rod is connected in the air holes in a sliding and sealing mode, and the sharp tool is connected with the driving rod. The sealed air cavity has larger volume and high sensitivity in response to temperature.
Preferably, adjacent fire suppression capsule assemblies, the fixed connection block of one fire suppression capsule assembly is connected with the fixed extrusion strip of the other fire suppression capsule assembly. The number of fire suppressing capsules that can be installed in the hood can be maximized. Improving the fire extinguishing capability.
Preferably, the fixed extrusion strip is located above the fire suppression capsule row and is obliquely arranged along the front-rear direction, the mirror layer is arranged on the lower surface of the fixed extrusion strip, the oblique directions of the fixed extrusion strips in the adjacent fire suppression capsule assemblies are opposite, only one end of the front-rear capsule storage channels in the adjacent two fire suppression capsule assemblies is communicated through the vertical capsule channels, the adjacent vertical capsule channels are located at two ends of the front-rear capsule storage channels, the lower ends of the front-rear capsule storage channels in the lowest fire suppression capsule assemblies are aligned with the capsule input holes arranged on the wall of the storage chamber, and the capsule input holes are detachably connected with plugs. When the fire-suppressing capsule is manufactured, the opening end of the protective cover is kept upwards, and then the fire-suppressing capsule is filled into the capsule input hole, so that the fire-suppressing capsule can be conveniently filled into all the front-back capsule storage channels. The convenience in manufacturing is good. After fire, the capsule input hole is opened to exhaust, so that the capsule input hole plays a role in leading the capsule storage channel to be forward and backward and plays a role in one object.
The invention has the following advantages: the fire is extinguished by the fire suppression capsule, so that the fire extinguishing reliability is good; besides thermal explosion, the fire suppression capsule can be broken by the sharp tool when the temperature rises, so that the reliability of the fire suppression capsule when the fire suppression capsule is broken is improved, and the problem that the capsule cannot respond to timely breakage due to ultrathin wall thickness is avoided.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
fig. 3 is an enlarged partial schematic view at C of fig. 2.
In the figure: the fire-suppression capsule comprises a storage chamber 4, a fixed extrusion strip 8, a sharp tool 9, a driving mechanism 10, a front-back capsule storage channel 11, a fire-suppression capsule 12, a cutting edge 13, a capsule annular groove 14, a sealing air cavity 15, a fixed connection block 16, a driving rod 17, a sliding block 18, a vertical capsule channel 19, a capsule input hole 20, a plug 21, a supporting strip 22, a needle point 23, a cylindrical body 24, a sliding hole 25, a fire-suppression capsule assembly 26 and a connecting strip 27.
Detailed Description
The invention is further described below with reference to the drawings and examples.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, a power battery fire extinguishing mechanism includes a storage chamber 4 with an opening at a lower end, a plurality of fire suppression capsule assemblies 26 distributed along an up-down direction are arranged in the storage chamber, and 4 fire suppression capsule assemblies are arranged in the storage chamber of the cabinet. A fire extinguishing agent outflow space is arranged between the fire suppression capsule component and the side wall of the storage chamber. The fire suppressing capsule assembly includes a fixed extrusion strip 8 (the fixed extrusion strip of the uppermost fire suppressing capsule assembly is integrated with the top wall of the protective cover), a row of fire suppressing capsule rows, sharp objects 9 for rupturing all the fire suppressing capsules in the fire suppressing capsule rows, and a driving mechanism 10 for driving the sharp objects to move toward the fire suppressing capsule rows when the temperature rises, the fixed extrusion strip and the sharp objects are distributed on both sides (in particular, on the upper and lower sides, the sharp objects are located below the fixed extrusion strip), a forward and backward capsule storage passage 11 capable of storing only one row of fire suppressing capsule rows is formed between the fixed extrusion strip and the sharp objects, and the fire suppressing capsules 12 in the fire suppressing capsule rows are arranged in the forward and backward capsule storage passage in the forward and backward direction. The edge 13 is a knife bar of the fire suppression capsule in the fire suppression capsule row. The outer surface of the fire suppression capsule is provided with a capsule part annular groove 14 extending along the circumferential direction of the fire suppression capsule, and the cutting edge is aligned with the capsule part annular groove. The cutting edge is arranged in the annular groove of the capsule part in a penetrating way, and the knife bar is positioned below the fire suppression capsule group.
The drive mechanism comprises a stationary connection block 16 provided with a sealed air chamber 15. The fixed connecting block is provided with a plurality of air holes which are used for communicating the sealed air cavity with the outside of the fixed connecting block, a driving rod 17 is connected in a sliding and sealing way in the air holes, and the driving rod is connected with the air holes in a sliding and sealing way through a sliding block 18. The sharp tool is connected with the driving rod. And the fixed connecting blocks of the adjacent fire suppression capsule assemblies are connected with the fixed extrusion strips of the other fire suppression capsule assemblies. The fixed extrusion strip is arranged above the fire suppression capsule row and is obliquely arranged along the front-rear direction, a mirror layer is arranged on the lower surface of the fixed extrusion strip, the oblique directions of the fixed extrusion strips in the adjacent fire suppression capsule assemblies are opposite, only one end of a front-rear capsule storage channel in each two adjacent fire suppression capsule assemblies is communicated through a vertical capsule channel 19, the adjacent vertical capsule channels are arranged at two ends of the front-rear capsule storage channel, the front-rear capsule storage low end in the lowest fire suppression capsule assembly is aligned with a capsule input hole 20 arranged on the wall of the storage chamber, and the capsule input hole is detachably connected with a plug 21.
Embodiment two differs from embodiment one in that:
referring to fig. 3, the sharps are root needles aligned in one-to-one correspondence with fire suppression capsules in the fire suppression capsule row. The fire suppression capsule assembly also includes a carrier strip 22 on which the fire suppression capsules in the fire suppression capsule rows are tiled with the needle tips 23 of the needles facing upward, the needles being located entirely below the upper surface of the carrier strip. The needle comprises a cylindrical body 24 to which the needle tip is coaxially attached, the cylindrical body being slidably received in a slide aperture 25 in the carrier strip, the cylindrical body being joined to a slide Kong Di. All the cylindrical bodies are connected to the connecting strip 27 and all the driving rods are connected to the connecting strip.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the above embodiments, and modifications and equivalents of some of the technical features described in the above embodiments may be made to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The power battery fire extinguishing mechanism is characterized by comprising a storage chamber with an open lower end, wherein a plurality of fire suppression capsule assemblies distributed along the up-down direction are arranged in the storage chamber, each fire suppression capsule assembly comprises a fixed extrusion strip, a row of fire suppression capsule rows, a sharp tool for breaking all fire suppression capsules in the fire suppression capsule rows and a driving mechanism for driving the sharp tool to move towards the fire suppression capsule rows when the temperature rises, the fixed extrusion strips and the sharp tool are distributed on two sides of the fire suppression capsule rows, a front-back capsule storage channel capable of storing only one row of the fire suppression capsule rows is formed between the fixed extrusion strips and the sharp tool, the fire suppression capsules in the fire suppression capsule rows are arranged in the front-back capsule storage channel along the front-back direction, and a fire extinguishing agent outflow space is arranged between the fire suppression capsule assemblies and the side walls of the storage chamber; the driving mechanism comprises a fixed connecting block provided with a sealing air cavity, the fixed connecting block is provided with a plurality of air holes which are used for communicating the sealing air cavity with the outside of the fixed connecting block, the inside of the air holes is in sliding sealing connection with a driving rod, the driving rod is in sliding sealing connection with the air holes through a sliding block, a sharp tool is connected with the driving rod, adjacent fire suppression capsule components, the fixed connecting block of one fire suppression capsule component is connected with a fixed extrusion strip of the other fire suppression capsule component, the fixed extrusion strip is positioned above a fire suppression capsule row and obliquely arranged along the front-back direction, a mirror layer is arranged on the lower surface of the fixed extrusion strip, the oblique directions of the fixed extrusion strips in the adjacent fire suppression capsule components are opposite, only one end of a front-back capsule storage channel in the two adjacent fire suppression capsule components is communicated through a vertical capsule channel, the adjacent vertical capsule channel is positioned at two ends of the front-back capsule storage channel, the front-back capsule storage low end in the lowest fire suppression capsule component is aligned with a capsule input hole arranged on the wall of the storage chamber, and the capsule input hole can be detachably connected with a plug.
2. The power cell fire suppression mechanism of claim 1, wherein the sharp instrument is a knife bar with a cutting edge facing a fire suppression capsule in the row of fire suppression capsules.
3. The power cell fire extinguishing mechanism of claim 2, wherein the outer surface of the fire suppressing capsule is provided with a capsule portion annular groove extending circumferentially of the fire suppressing capsule, the cutting edge being aligned with the capsule portion annular groove.
4. A power cell fire extinguishing mechanism according to claim 3, wherein the cutting edge is disposed through the annular groove of the capsule portion, and the knife bar is disposed below the fire suppressing capsule group.
5. The power cell fire suppression mechanism of claim 1, wherein the sharps are root needles aligned in one-to-one correspondence with fire suppression capsules in a row of fire suppression capsules.
6. The power cell fire suppression mechanism of claim 5, wherein the fire suppression capsule assembly further comprises a backing strip, the static extrusion strip is located above the fire suppression capsule group, the fire suppression capsules in the fire suppression capsule rows are tiled on the backing strip, the needle tips of the needles face upward, and the whole needles are located below the upper surface of the backing strip.
7. The power cell fire suppression mechanism of claim 6, wherein the needle comprises a cylindrical body, the needle tip being coaxially connected to the cylindrical body, the cylindrical body being slidably disposed within a slide aperture on a bracket, the cylindrical body being coupled with the slide Kong Di.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332096.6A CN115531770B (en) | 2022-03-31 | 2022-03-31 | Power battery fire extinguishing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332096.6A CN115531770B (en) | 2022-03-31 | 2022-03-31 | Power battery fire extinguishing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115531770A CN115531770A (en) | 2022-12-30 |
| CN115531770B true CN115531770B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210332096.6A Active CN115531770B (en) | 2022-03-31 | 2022-03-31 | Power battery fire extinguishing mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN115531770B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017074026A1 (en) * | 2015-10-26 | 2017-05-04 | 김병열 | Capsule-type fire extinguisher |
| CN112448071A (en) * | 2019-09-03 | 2021-03-05 | 飞尔金株式会社 | Capsule type fire extinguishing device for preventing battery explosion and battery with capsule type fire extinguishing device |
| CN214971366U (en) * | 2021-02-22 | 2021-12-03 | 江苏塔菲尔动力系统有限公司 | Battery module and battery pack |
| CN215025505U (en) * | 2021-07-07 | 2021-12-07 | 杭州行云电源技术有限公司 | Automatic fire suppression device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019127314A1 (en) * | 2019-10-10 | 2021-04-15 | Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen | Method for contacting the battery cells of a battery module and battery extinguishing device therefor |
-
2022
- 2022-03-31 CN CN202210332096.6A patent/CN115531770B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017074026A1 (en) * | 2015-10-26 | 2017-05-04 | 김병열 | Capsule-type fire extinguisher |
| CN112448071A (en) * | 2019-09-03 | 2021-03-05 | 飞尔金株式会社 | Capsule type fire extinguishing device for preventing battery explosion and battery with capsule type fire extinguishing device |
| CN214971366U (en) * | 2021-02-22 | 2021-12-03 | 江苏塔菲尔动力系统有限公司 | Battery module and battery pack |
| CN215025505U (en) * | 2021-07-07 | 2021-12-07 | 杭州行云电源技术有限公司 | Automatic fire suppression device |
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| Publication number | Publication date |
|---|---|
| CN115531770A (en) | 2022-12-30 |
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