CN221632696U - Battery monomer and power consumption device - Google Patents
Battery monomer and power consumption device Download PDFInfo
- Publication number
- CN221632696U CN221632696U CN202322829548.4U CN202322829548U CN221632696U CN 221632696 U CN221632696 U CN 221632696U CN 202322829548 U CN202322829548 U CN 202322829548U CN 221632696 U CN221632696 U CN 221632696U
- Authority
- CN
- China
- Prior art keywords
- housing
- battery cell
- fire extinguisher
- fire
- thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000178 monomer Substances 0.000 title abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 17
- 230000005611 electricity Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery monomer and an electricity utilization device, and relates to the technical field of batteries. The battery monomer comprises a first shell, an electric core and a fire extinguisher, wherein the first shell is provided with an installation cavity, the electric core and the fire extinguisher are both accommodated in the installation cavity, and the fire extinguisher is used for releasing fire extinguishing agent to the installation cavity at a threshold temperature. The battery monomer provided by the utility model has the fire extinguishing function and higher safety.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery monomer and an electric device.
Background
The development of new energy industry has put higher demands on battery industry, and high energy density and high safety are the main development directions at present.
In practice, however, the high energy density and high safety are difficult to balance, and commercially available high energy density cells generally have a high risk of spontaneous combustion. The battery monomer lacks a fire-extinguishing and cooling function, so that fire is extinguished by means of an externally configured fire-extinguishing system under the condition of spontaneous combustion, the fire-extinguishing timeliness is poor, and safety accidents are easily caused.
Disclosure of utility model
The utility model aims to provide a battery monomer which has a fire extinguishing function and higher safety.
The utility model also aims to provide an electric device which has the characteristic of higher safety.
The embodiment of the utility model provides a technical scheme that:
The utility model provides a battery monomer, includes first casing, electric core and fire extinguisher, first casing has the installation cavity, electric core with the equal holding of fire extinguisher is in the installation cavity, the fire extinguisher is used for releasing fire extinguishing agent to under threshold value temperature the installation cavity.
In an alternative embodiment, the inner surface of the first housing is formed with an inside corner region in which the fire extinguisher is received.
In an alternative embodiment, a plurality of internal corner areas are distributed at intervals on the periphery of the battery core, and the fire extinguisher is accommodated in each internal corner area.
In an alternative embodiment, the first housing has four housing side walls, which are connected end to end in sequence to form four of the reentrant corner regions;
The peripheral side walls of the cells are in contact with four of the housing side walls.
In an alternative embodiment, the fire extinguisher has a second housing within which the fire extinguishing agent is contained, the second housing having a zone of weakness that ruptures at the threshold temperature.
In an alternative embodiment, the second housing is connected to the first housing, and the weakened area is located on a side of the second housing, which is adjacent to the battery cell.
In an alternative embodiment, the thickness of the weakened area is in the range of 1 μm to 10 μm and the thickness of the area of the second housing other than the weakened area is in the range of 3 μm to 50 μm.
In an alternative embodiment, the second housing comprises an inner metal layer and an outer insulating layer arranged in a stack, the weakened zone being composed of a portion of the inner metal layer and a corresponding portion of the outer insulating layer.
In an alternative embodiment, the thickness of the portion of the inner metal layer constituting the weakened zone is between 0.7 μm and 7 μm, the thickness of the remaining portion being between 2 μm and 40 μm;
The thickness of the portion of the outer insulating layer constituting the weakened zone is between 0.3 μm and 3 μm, and the thickness of the remaining portion is between 1 μm and 10 μm.
The utility model also provides an electric device which comprises the battery monomer. The battery monomer comprises a first shell, a battery cell and a fire extinguisher, wherein the first shell is provided with an installation cavity, the battery cell and the fire extinguisher are both accommodated in the installation cavity, and the fire extinguisher is used for releasing fire extinguishing agent to the installation cavity at a threshold temperature.
Compared with the prior art, the battery cell provided by the utility model has the advantages that the fire extinguisher is arranged in the installation cavity where the battery cell is positioned, and the fire extinguisher can release the fire extinguishing agent to the installation cavity at the threshold temperature. In practical application, when the temperature of the battery monomer rises to reach the threshold temperature, the fire extinguisher releases the fire extinguishing agent to extinguish the fire in the installation cavity. Therefore, the battery cell provided by the utility model has the beneficial effects that: has the fire extinguishing function and higher safety.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described. It is appreciated that the following drawings depict only certain embodiments of the utility model and are therefore not to be considered limiting of its scope. Other relevant drawings may be made by those of ordinary skill in the art without undue burden from these drawings.
Fig. 1 is an exploded view of a battery cell according to an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional structure of a battery cell according to an embodiment of the present utility model.
Fig. 3 is a partial structural schematic view of a second housing of the fire extinguisher of fig. 2.
Icon: 100-battery cells; 110-a first housing; 111-a mounting cavity; 112-reentrant angular region; 113-shell side walls; 120-cell; 130-fire extinguisher; 131-a second housing; 132-area of weakness; 133-an inner metal layer; 134-an outer insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The following describes specific embodiments of the present utility model in detail with reference to the drawings.
Examples
Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic exploded view of a battery cell 100 according to the present embodiment, and fig. 2 is a schematic sectional view of the battery cell 100.
The battery unit 100 provided in this embodiment includes a first housing 110, a battery core 120 and a fire extinguisher 130, where the first housing 110 has an installation cavity 111, the battery core 120 and the fire extinguisher 130 are both accommodated in the installation cavity 111, and the fire extinguisher 130 is used for releasing fire extinguishing agent to the installation cavity 111 at a threshold temperature.
It is understood that the battery cell 100 provided in this embodiment may further include conventional components such as a top cap assembly, positive and negative electrodes, and the like, which are not described in additional detail in this embodiment.
In practice, the temperature within the mounting cavity 111 may continue to rise until spontaneous combustion of the battery cell 100 occurs. The specific value of the threshold temperature is set according to the practical application condition, so that the fire extinguishing agent can be released before or after the spontaneous combustion of the battery cell 100 occurs, and the risk of heat diffusion of the battery cell 100 after failure is effectively controlled.
The fire extinguishing agent may be carbon tetrafluoride, carbon dioxide or dry powder. The dry powder contains ammonium phosphate, which can react with the electrolyte in the installation cavity 111 to prevent the chemical reaction of the battery cell 100, thereby achieving the fire extinguishing effect. The fire extinguishing agent can also be P84 urea gum and polycyanate ester, and can form a stable chemical adsorption layer, reduce the internal temperature of the first shell 110 and slow down the fire. The fire extinguishing agent can also select a freezing solution of Ji Ci to be sprayed, so that the temperature of the installation cavity 111 can be reduced, and the fire condition can be effectively controlled.
In order to fully utilize the internal space of the first housing 110, in this embodiment, the internal surface of the first housing 110 is formed with an internal corner region 112, and the fire extinguisher 130 is accommodated in the internal corner region 112.
It can be appreciated that, in practical applications, the inside corner area 112 formed on the inner surface of the first housing 110 cannot be fully filled by the battery core 120, and this space is generally wasted, and in this embodiment, the fire extinguisher 130 is accommodated in the inside corner area 112 of the first housing 110, so that the full utilization of the inner space of the first housing 110 can be achieved.
In this embodiment, the plurality of internal corner regions 112 are distributed at intervals on the peripheral side of the battery cell 120, and fire extinguishers 130 are accommodated in the plurality of internal corner regions 112.
Fire extinguishers 130 are contained in the internal corner areas 112, so that when thermal runaway occurs in different directions, corresponding fire extinguishers 130 can be used for releasing fire extinguishing agents in time, and response efficiency and reliability are improved. In addition, the plurality of fire extinguishers 130 are distributed at intervals on the periphery of the battery cell 120, and when the temperature in the installation cavity 111 reaches the threshold temperature, the plurality of fire extinguishers 130 release fire extinguishing agents from different positions, so that the fire retarding and extinguishing effects can be further improved.
In this embodiment, the first housing 110 has four housing side walls 113, and the four housing side walls 113 are connected end to end in order to form four inside corner regions 112. The battery cell 120 is a coil core with an oval cross section, and the peripheral side wall of the battery cell 120 is in contact with the four shell side walls 113.
In other embodiments, the shape and structure of the battery cell 120 and the first housing 110 can be adaptively adjusted according to practical application conditions.
Referring to fig. 3 in combination, fig. 3 is a schematic view of a portion of the second housing 131 of the fire extinguisher 130.
The battery cell 100 according to the present embodiment has a fire extinguisher 130 having a second case 131, a fire extinguishing agent contained in the second case 131, and a weak area 132 broken at a threshold temperature on the second case 131.
In this embodiment, the threshold temperature is in the range of 90 ℃ to 110 ℃. In practical application, when thermal runaway occurs in the battery cell 100, and the temperature in the installation cavity 111 increases to the threshold temperature, the weak area 132 on the second casing 131 breaks, and the fire extinguishing agent contained in the second casing 131 enters the installation cavity 111 through the broken weak area 132, thereby exerting the flame-retardant and fire-extinguishing effects.
In order to avoid interference of the fire extinguisher 130 with the battery cell 120, the second housing 131 is connected to the first housing 110, and the weak area 132 is located on the side of the second housing 131 near the battery cell 120. Specifically, the outer bottom wall of the second housing 131 is adhered to the inner bottom wall of the first housing 110, and in other embodiments, the second housing 131 may be clamped or welded to the first housing 110.
The weak area 132 is located on the side, close to the battery cell 120, of the second casing 131, so that the weak area 132 can sense temperature accurately, and can release fire extinguishing agent to the direction of the battery cell 120 quickly and smoothly.
In this embodiment, the thickness of the weakened area 132 is in the range of 1 μm to 10 μm, and the thickness of the area of the second case 131 excluding the weakened area 132 is in the range of 3 μm to 50 μm. It will be appreciated that in any event, it is desirable to ensure that the weakened area 132 has a thickness that is less than the thickness of the other areas of the second housing 131.
The second case 131 includes an inner metal layer 133 and an outer insulating layer 134 which are stacked, and the weakened area 132 is composed of a portion of the inner metal layer 133 and a portion of the corresponding outer insulating layer 134.
The inner metal layer 133 secures the strength of the second case 131 from being deformed by the compressive force of the expansion of the battery cell 120. The external insulating layer 134 is insulated from the battery cell 120, and an insulating material such as insulating glue may be selected in practical applications.
In this embodiment, in order to ensure smooth release of the fire extinguishing agent, the thickness of the portion of the inner metal layer 133 constituting the weakened area 132 is between 0.7 μm and 7 μm, and the thickness of the remaining portion is between 2 μm and 40 μm. The thickness of the portion of the outer insulating layer 134 constituting the weakened zone 132 is between 0.3 μm and 3 μm, and the thickness of the remaining portion is between 1 μm and 10 μm.
It will be appreciated that in practice, when the temperature within the mounting cavity 111 reaches the threshold temperature, both portions of the inner metal layer 133 and portions of the outer insulating layer 134 that make up the weakened zone 132 will fracture.
In summary, the battery unit 100 provided in this embodiment has a fire extinguishing function, and can perform fire-retardant fire-extinguishing treatment by itself without using an external fire extinguishing system when thermal runaway occurs, thereby having higher safety.
In addition, the present embodiment also provides an electric device, including the foregoing battery cell 100. The electric device provided by the embodiment has the advantage of higher use safety due to the beneficial effects of the battery cell 100.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a battery cell, its characterized in that includes first casing (110), electric core (120) and fire extinguisher (130), first casing (110) have installation cavity (111), electric core (120) with fire extinguisher (130) all hold in installation cavity (111), fire extinguisher (130) are used for releasing fire extinguishing agent to under threshold value temperature installation cavity (111).
2. The battery cell of claim 1, wherein an inside surface of the first housing (110) is formed with an inside corner region (112), and the fire extinguisher (130) is accommodated in the inside corner region (112).
3. The battery cell according to claim 2, wherein a plurality of the inside corner regions (112) are spaced apart on the peripheral side of the cell (120), and the fire extinguisher (130) is accommodated in each of the inside corner regions (112).
4. A battery cell according to claim 3, wherein the first housing (110) has four housing side walls (113), the four housing side walls (113) being connected end to end in sequence to form four of the reentrant corner regions (112);
The peripheral side walls of the cells (120) are in contact with four of the housing side walls (113).
5. The battery cell according to claim 1, wherein the fire extinguisher (130) has a second housing (131), the fire extinguishing agent being contained within the second housing (131), the second housing (131) having a weakened area (132) thereon that breaks at the threshold temperature.
6. The battery cell of claim 5, wherein the second housing (131) is connected to the first housing (110), and the weakened area (132) is located on a side of the second housing (131) that is adjacent to the cell (120).
7. The battery cell according to claim 5, wherein the thickness of the weakened area (132) is in the range of 1 μm to 10 μm, and the thickness of the area of the second case (131) other than the weakened area (132) is in the range of 3 μm to 50 μm.
8. The battery cell of claim 5, wherein the second housing (131) includes an inner metal layer (133) and an outer insulating layer (134) stacked, the weakened area (132) being composed of a portion of the inner metal layer (133) and a portion of the corresponding outer insulating layer (134).
9. The battery cell according to claim 8, wherein the thickness of the portion of the inner metal layer (133) constituting the weakened zone (132) is between 0.7 μm and 7 μm, the thickness of the remaining portion being between 2 μm and 40 μm;
The thickness of the portion of the outer insulating layer (134) constituting the weakened zone (132) is between 0.3 μm and 3 μm, the thickness of the remaining portion being between 1 μm and 10 μm.
10. An electrical device comprising a battery cell (100) according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322829548.4U CN221632696U (en) | 2023-10-20 | 2023-10-20 | Battery monomer and power consumption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322829548.4U CN221632696U (en) | 2023-10-20 | 2023-10-20 | Battery monomer and power consumption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221632696U true CN221632696U (en) | 2024-08-30 |
Family
ID=92495696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322829548.4U Active CN221632696U (en) | 2023-10-20 | 2023-10-20 | Battery monomer and power consumption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221632696U (en) |
-
2023
- 2023-10-20 CN CN202322829548.4U patent/CN221632696U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |