CN215136242U - Battery pack fire extinguishing device and battery pack - Google Patents
Battery pack fire extinguishing device and battery pack Download PDFInfo
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- CN215136242U CN215136242U CN202120455713.2U CN202120455713U CN215136242U CN 215136242 U CN215136242 U CN 215136242U CN 202120455713 U CN202120455713 U CN 202120455713U CN 215136242 U CN215136242 U CN 215136242U
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- fire extinguishing
- extinguishing agent
- battery pack
- storage
- battery
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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 relates to a power battery technical field discloses a battery package extinguishing device and battery package, and battery package extinguishing device includes: the fire extinguishing agent storage is arranged on the inner surface of the cover body of the battery pack and can be broken when high temperature is applied to the fire extinguishing agent storage; and the fire extinguishing agent is stored in the fire extinguishing agent storage device and can be sprayed out towards the battery cell of the battery pack when the fire extinguishing agent storage device is broken. The battery pack comprises the battery pack fire extinguishing device. The utility model provides a battery package extinguishing device can protect effectively the thermal runaway of battery package, in time put out flame and prevent stretching of flame. The utility model provides a battery package adopts above-mentioned battery package extinguishing device, and the security is higher and energy density is bigger.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a battery package extinguishing device and battery package.
Background
Although lithium ion batteries are more and more widely applied to new energy automobiles and energy storage systems, the safety performance of the lithium ion batteries still restricts the further popularization and application of the lithium ion batteries at present. The main potential safety hazard of the conventional lithium ion battery is thermal runaway of a battery pack, which can cause fire or explosion to affect the safety of the whole vehicle and passengers.
Thermal runaway of current battery packs is mainly protected by the following aspects: 1. increase thermal-insulated, place the heat insulating mattress between adjacent battery in the battery module, the thickness of general heat insulating mattress is about 2mm, and the heat insulating mattress compressible volume is less in this kind of mode, can not release abundant space. 2. The thermal stability of the cell itself is improved mainly by adding additives to the electrolyte of the cell, which may cause deterioration of other properties of the cell (such as power/fast charge). 3. The mica plate is added to the upper cover plate of the battery pack, when the battery core is out of control due to heat, flame can not directly burn and melt the mica plate at the upper end, and the mica plate is heavier in the mode, so that the energy density of the battery pack can be sacrificed, and the cost is increased more.
SUMMERY OF THE UTILITY MODEL
Based on above, an object of the utility model is to provide a battery package extinguishing device to solve the poor technical problem of thermal runaway protective capacities that current battery package exists.
Another object of the utility model is to provide a battery package, it adopts foretell battery package extinguishing device, has higher security and reliability.
In order to achieve the purpose, the utility model adopts the following technical proposal:
provided is a battery pack fire extinguishing apparatus, including:
a fire extinguishing agent storage provided at an inner surface of a cover body of the battery pack, the fire extinguishing agent storage being breakable when subjected to high temperature;
and the fire extinguishing agent is stored in the fire extinguishing agent storage, and can be sprayed out towards the battery cell of the battery pack when the fire extinguishing agent storage is broken.
As a preferred scheme of battery package extinguishing device, the fire extinguishing agent memory is the storage return bend, the storage return bend is snakelike bending shape, just the storage return bend evenly tile in the internal surface of lid, the internal surface of lid is provided with the circular arc draw-in groove, the storage return bend clamps to be in the circular arc draw-in groove.
As a preferred scheme of the battery pack fire extinguishing device, the fire extinguishing agent storage device is a storage pack, the thickness of the storage pack is 3-10 mm, the cross section of the storage pack is triangular, rectangular or circular, the inner surface of the cover body is provided with an installation groove matched with the cross section of the storage pack, and the fire extinguishing agent storage device is embedded in the installation groove.
As a preferable mode of the battery pack fire extinguishing apparatus, the fire extinguishing agent includes nitrogen and/or an inert gas including at least one of argon, helium and krypton.
As a preferred scheme of a battery pack fire extinguishing apparatus, the fire extinguishing agent is compressed and filled in the fire extinguishing agent storage, and the pressure of the fire extinguishing agent is 2-4 bar.
As a preferable scheme of the battery pack fire extinguishing device, the fire extinguishing agent is flame-retardant powder.
As a preferred embodiment of the battery pack fire extinguishing apparatus, the fire extinguishing agent storage is made of a thermally decomposable material.
A battery pack comprises a shell, a cover body, a battery cell and the battery pack fire extinguishing device in any scheme, wherein the battery cell is installed in the shell, a shell opening is formed in one end of the shell, the cover body is covered on the shell opening, and the battery pack fire extinguishing device is installed on the inner surface of the cover body and faces towards the battery cell.
As a preferable scheme of the battery pack, a mica plate is embedded in the cover body.
As a preferable mode of the battery pack, a sealing device is provided between the case and the cover.
The utility model has the advantages that:
the utility model provides a battery package extinguishing device can make fire extinguishing agent memory break and blowout fire extinguishing agent when a certain battery or battery module in the battery package is on fire, puts out flame rapidly, and fire extinguishing agent can dilute the heat, further alleviates the thermal runaway of battery package to this battery package extinguishing device simple structure, simple to operate does not occupy the space in the battery package, makes battery package energy density big and the security good.
The utility model provides a battery package adopts above-mentioned battery package extinguishing device, has better security and bigger energy density and lower cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and 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 the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery pack fire extinguishing apparatus and a battery pack provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery pack fire extinguishing apparatus and a battery pack provided by the second embodiment of the present invention.
In the figure:
1. a housing; 11. a housing opening; 2. a cover body; 21. an arc clamping groove; 22. installing a groove; 3. a fire suppressant storage.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in figure 1, the embodiment of the utility model provides a battery package extinguishing device for protect the battery package, prevent battery package thermal runaway. The fire extinguishing device for the battery pack comprises a fire extinguishing agent storage 3 and a fire extinguishing agent filled in the fire extinguishing agent storage 3, wherein the fire extinguishing agent storage 3 is arranged on the inner surface of a cover body 2 of the battery pack, and the fire extinguishing agent storage 3 can be broken or melted when being subjected to high temperature. The fire extinguishing agent is stored in the fire extinguishing agent storage 3, and when the fire extinguishing agent storage 3 is broken, the fire extinguishing agent can be sprayed towards the battery cell in the battery pack to realize fire extinguishing.
Specifically, fire extinguishing agent memory 3 is the storage return bend in this embodiment, and the storage return bend is snakelike bending shape and evenly lays in the internal surface of lid 2, and the internal surface of lid 2 is provided with a plurality of circular arc draw-in grooves 21, and a plurality of circular arc draw-in grooves 21 set up along the extending direction of storage return bend, and the storage return bend clamps in a plurality of circular arc draw-in grooves 21. The fire extinguishing agent storage 3 is made of materials which are easily decomposed or melted by heat, and preferably, the fire extinguishing agent storage 3 is made of cheap and easily-available pyrolyzable plastic materials.
Optionally, the fire extinguishing agent is selected from a gaseous fire extinguishing agent or a powdered fire extinguishing agent. When the fire extinguishing agent is a gaseous fire extinguishing agent, it includes nitrogen and/or inert gas. Further, the inert gas includes one or more of argon, helium, or krypton. When the battery pack catches fire, nitrogen or inert gas can be rapidly sprayed into the battery pack to isolate air and dilute the concentration of oxygen, so that the effect of effectively extinguishing fire is achieved. The fire extinguishing agent is compressed and filled in the fire extinguishing agent storage 3 so as to increase the storage capacity of the fire extinguishing agent storage 3 and improve the fire extinguishing effect. The pressure setting of fire extinguishing agent in fire extinguishing agent memory 3 is between 2 ~ 4bar to guarantee the structural strength of fire extinguishing agent memory 3 when guaranteeing fire control effect.
When the fire extinguishing agent is a powder fire extinguishing agent, the fire extinguishing agent is flame retardant powder, and the flame retardant powder comprises an additive and one or more of ammonium bicarbonate, potassium bicarbonate, ammonium dihydrogen phosphate and potassium sulfate.
The utility model also provides a battery package, it includes casing 1, lid 2, electric core and above-mentioned battery package extinguishing device, electric core install in casing 1, 1 one end of casing is provided with shell opening 11, and shell opening 11 department is located to 2 lids of lid, and battery package extinguishing device installs in the internal surface of lid 2 and towards electric core.
When the electric core in the battery package takes place thermal runaway, battery package extinguishing device can spray extinguishing agent towards electric core rapidly, puts out flame, guarantees the holistic security of battery package.
Further, a sealing device is provided between the case 1 and the lid 2. Preferably, the sealing device is rubber sealing rings, and the casing 1 and the cover body 2 are both provided with annular grooves in which the rubber sealing rings are installed. Sealing device's setting can be completely cut off the inside and external environment of battery package mutually, and it is inside to prevent that the battery package from taking place the air that contains oxygen element when thermal runaway from entering into the battery package, further guarantees to put out a fire validity and security.
Further, the cover body 2 is arranged to be a hollow structure, a mica plate is embedded in the cover body 2, when thermal runaway of the battery pack occurs, flame cannot burn the cover body 2, and safety is further guaranteed.
Example two
The utility model provides a battery package extinguishing device and battery package, wherein the battery package includes electric core, casing 1, lid 2 and battery package extinguishing device, and electric core sets up in casing 1, and on casing opening 11 was located to lid 2 lid, battery package extinguishing device set up in the internal surface of lid 2, and battery package extinguishing device includes fire extinguishing agent memory 3 and fills the fire extinguishing agent of dress in fire extinguishing agent memory 3, and it is used for spraying the fire extinguishing agent when battery package takes place the thermal runaway in order to put out a fire to the battery package. The battery pack fire extinguishing apparatus and the battery pack provided in this embodiment are substantially the same as the battery pack fire extinguishing apparatus and the battery pack provided in the first embodiment, except that the fire extinguishing agent storage 3 of the fire extinguishing apparatus of the battery pack in this embodiment has a different structure.
Specifically, the fire extinguishing agent storage device 3 is a storage bag, the thickness of the storage bag is 3-10 mm, the cross section of the storage bag is triangular, rectangular or circular, the inner surface of the cover body 2 is provided with an installation groove 22 matched with the cross section of the storage bag, and the depth of the installation groove 22 is equal to or slightly larger than the thickness of the storage bag. The fire extinguishing agent storage 3 is fitted in the mounting recess 22. In the example shown in fig. 2, the fire extinguishing agent storage 3 is of a cubic structure, and the cross-sectional shapes of the fire extinguishing agent storage 3 and the mounting groove 22 are both rectangular. The storage bag is preferably made of a pyrolyzable plastic material.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A battery pack fire suppression apparatus, comprising:
a fire extinguishing agent storage (3) disposed on an inner surface of a cover body (2) of the battery pack, the fire extinguishing agent storage (3) being breakable when subjected to high temperatures;
a fire extinguishing agent stored in the fire extinguishing agent storage (3), the fire extinguishing agent being capable of being ejected toward the battery cell of the battery pack when the fire extinguishing agent storage (3) is broken.
2. Fire extinguishing device according to claim 1, characterized in that the extinguishing agent storage (3) is a storage elbow which is in the shape of a serpentine bend and evenly lies on the inner surface of the cover (2), the inner surface of the cover (2) being provided with circular arc slots (21) in which the storage elbow is snapped.
3. The battery pack fire extinguishing apparatus according to claim 1, wherein the fire extinguishing agent storage (3) is a storage pack, the thickness of the storage pack is 3-10 mm, the cross-sectional shape of the storage pack is triangular, rectangular or circular, the inner surface of the cover body (2) is provided with a mounting groove (22) matching with the cross-sectional shape of the storage pack, and the fire extinguishing agent storage (3) is embedded in the mounting groove (22).
4. The battery pack fire suppression apparatus of claim 1, wherein the fire extinguishing agent comprises nitrogen and/or an inert gas comprising at least one of argon, helium, and krypton.
5. The battery pack fire extinguishing apparatus according to claim 4, wherein the fire extinguishing agent is compressed and charged in the fire extinguishing agent storage (3), and the pressure of the fire extinguishing agent is 2 to 4 bar.
6. The battery pack fire extinguishing apparatus according to claim 1, wherein the fire extinguishing agent is a fire retardant powder.
7. Fire extinguishing battery pack device according to claim 1, characterized in that the extinguishing agent reservoir (3) is made of a thermally decomposing material.
8. A battery pack, characterized in that, it comprises a casing (1), a cover (2), an electric core and the battery pack fire extinguishing apparatus according to any one of claims 1-7, the electric core is installed in the casing (1), one end of the casing (1) is provided with a casing opening (11), the cover (2) is covered at the casing opening (11), the battery pack fire extinguishing apparatus is installed on the inner surface of the cover (2) and faces the electric core.
9. The battery pack according to claim 8, wherein the cover (2) is embedded with a mica plate.
10. Battery pack according to claim 8, characterized in that a sealing means is provided between the housing (1) and the cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120455713.2U CN215136242U (en) | 2021-03-01 | 2021-03-01 | Battery pack fire extinguishing device and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120455713.2U CN215136242U (en) | 2021-03-01 | 2021-03-01 | Battery pack fire extinguishing device and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215136242U true CN215136242U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120455713.2U Active CN215136242U (en) | 2021-03-01 | 2021-03-01 | Battery pack fire extinguishing device and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215136242U (en) |
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2021
- 2021-03-01 CN CN202120455713.2U patent/CN215136242U/en active Active
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