CN107579177B - Smoke diffusion device of power battery - Google Patents
Smoke diffusion device of power battery Download PDFInfo
- Publication number
- CN107579177B CN107579177B CN201710709158.XA CN201710709158A CN107579177B CN 107579177 B CN107579177 B CN 107579177B CN 201710709158 A CN201710709158 A CN 201710709158A CN 107579177 B CN107579177 B CN 107579177B
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- Prior art keywords
- battery
- smoke
- plate
- battery cover
- shell
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- 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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- 239000000779 smoke Substances 0.000 title claims abstract description 80
- 238000009792 diffusion process Methods 0.000 title claims abstract description 7
- 230000005389 magnetism Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 34
- 238000009413 insulation Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 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
Abstract
The invention discloses a power battery smoke diffusion device, which comprises a battery box and a battery device arranged in the battery box, wherein the battery device comprises a shell for preventing fire and heat, a battery cover closely contacted with the upper end of the shell and a battery body arranged in the shell; when the power battery is in thermal runaway, the automatic opening and closing of the smoke outlet can be realized through the arranged bar magnet, the smoke plate with magnetism conductivity and the battery cover, so that heat generated by the thermal runaway is discharged from the smoke channel in time, and the smoke discharge speed is improved; meanwhile, the arrangement of the closed cavity can effectively control thermal runaway expansion, avoid corrosion of smoke to battery electrodes, connecting sheets and the like, prevent damage to the power battery caused by high temperature, smoke and the like, ensure normal operation of other power batteries, effectively prolong the service life of the power battery and reduce the use cost.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a smoke diffusion device of a power battery.
Background
With the gradual increase of market share of electric automobiles, accidents of smoking and firing of the electric automobiles are increased gradually, and loss of lives and properties of people is brought. The main reasons for smoking and igniting the electric automobile are caused by thermal runaway and thermal runaway expansion of the power battery. When a certain power battery is short-circuited, overcharged or overdischarged, the temperature can be quickly raised, smoke or fire is generated, high temperature can be quickly radiated to other batteries, the temperature of the other batteries is quickly raised, and thermal runaway of the other batteries is caused, so that the thermal runaway is expanded.
At present, researchers often adopt to enlarge the interval between batteries or wrap heat-insulating fireproof materials around the batteries to prevent the thermal runaway expansion of the batteries, and although progress is made to a certain extent, the thermal runaway problem of the power batteries still has a lot of problems to be solved. Most of the commonly used power batteries are arranged in a battery box, and when a certain battery emits smoke, the smoke can permeate the whole box body, so that the battery electrode and a connecting sheet are corroded, or electronic components and insulating materials are damaged. Meanwhile, due to the fact that the temperature of the smoke is high, heat diffusion can cause the temperature of other batteries to rise sharply, and thermal runaway is generated. It is therefore desirable to provide a smoke evacuation device that permits the power cell to evacuate smoke to the outside of the battery case in the event of thermal runaway, while preferably not affecting other cells or components.
Disclosure of Invention
The invention aims to provide a power battery smoke diffusing device which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the power battery smoke diffusion device comprises a battery box and a battery device arranged in the battery box, wherein the battery device comprises a shell for fire prevention and heat insulation, a battery cover closely contacted with the upper end of the shell and a battery body arranged in the shell, and a smoke outlet provided with a sealing plate is formed in the top of the battery cover; one end of the sealing plate is in seamless connection with the top of the battery cover, and the other end of the sealing plate is provided with a strip magnet for automatically opening and closing.
As a further scheme of the invention: the strip magnet includes the upper strip magnet that sets up in the curie temperature of closing plate upper portion high and sets up the lower strip magnet that sets up in the curie temperature of closing plate lower part low, and the lower surface of lower strip magnet flushes with the closing plate lower surface.
As a further scheme of the invention: the size of the sealing plate is larger than that of the smoke outlet; the smoke outlet is formed in a battery cover above the battery body.
As a further scheme of the invention: a box notch is formed in one side of the battery box, and a smoke plate is attached to the inner wall of the top of the battery box.
As a further scheme of the invention: the smoke plate comprises a transverse plate with magnetic conductivity and side plates positioned on two sides of the transverse plate, and the smoke plate is an L-shaped plate with one end extending out of the notch of the box body.
As a further scheme of the invention: the upper surface of the battery cover is provided with magnetism conductivity, and the lower surface of the battery cover is provided with a heat insulation layer for fire prevention.
As a further scheme of the invention: a smoke channel is formed between the smoke plate and the battery cover.
As a further scheme of the invention: and a closed cavity with a sealing function is formed between the shell and the battery cover.
As a further scheme of the invention: the battery device is provided with at least one.
Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure, can realize the combination arrangement of a plurality of power batteries and is convenient to detach; the plurality of power batteries are orderly combined, so that the storage volume of a battery box can be reduced, and the space utilization rate is improved; when the power battery is in thermal runaway, the automatic opening and closing of the smoke outlet can be realized through the arranged bar magnet, the smoke plate with magnetism conductivity and the battery cover, so that heat generated by the thermal runaway is discharged from the smoke channel in time, and the smoke discharge speed is improved; meanwhile, the arrangement of the closed cavity can effectively control thermal runaway expansion, avoid corrosion of smoke to battery electrodes, connecting sheets and the like, prevent damage to the power battery caused by high temperature, smoke and the like, ensure normal operation of other power batteries, effectively prolong the service life of the power battery and reduce the use cost.
Drawings
Fig. 1 is a block diagram of a two-row three-column battery device according to the present invention.
Fig. 2 is a top view of the present invention with a row of three battery cells.
Fig. 3 is a front view of the present invention with a row of three battery cells.
Fig. 4 is a front view of the single battery device of the present invention.
Fig. 5 is a side view of a single cell device of the present invention.
Fig. 6 is A-A view of fig. 4 in accordance with the present invention.
Fig. 7 is a view B-B of fig. 4 in accordance with the present invention.
Fig. 8 is a view of fig. 5C-C in accordance with the present invention.
Fig. 9 is a front view of the smoke panel of the present invention.
Fig. 10 is a side view of a smoke sheet of the present invention.
In the figure: 1-battery box, 2-battery device, 21-shell, 22-battery cover, 23-battery body, 3-airtight cavity, 4-outlet, 5-bar magnet, 51-upper bar magnet, 52-lower bar magnet, 6-smog board, 61-diaphragm, 62-curb plate, 7-smog passageway, 8-closing plate.
Detailed Description
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. 1-10, in an embodiment of the present invention, a power battery smoke diffusing device includes a battery case 1 and a battery device 2 installed in the battery case 1, where at least one battery device 2 is provided, the battery device 2 includes a housing 21 for fire-proof and heat-insulating, a battery cover 22 closely contacting with an upper end of the housing 21, and a battery body 23 installed inside the housing 21, a sealed cavity 3 having a sealing function is formed between the housing 21 and the battery cover 22, the upper surface of the battery cover 22 has magnetism conductivity, a heat-insulating layer for fire-proof is provided on a lower surface, a smoke outlet 4 provided with a sealing plate 8 is provided on a top of the battery cover 22, the smoke outlet 4 is provided on the battery cover 22 located above the battery body 23, one end of the sealing plate 8 is seamlessly connected with the top of the battery cover 22, the other end is provided with a bar magnet 5 for automatic opening and closing, the dimension of the sealing plate 8 is larger than the dimension of the smoke outlet 4, the bar magnet 5 includes an upper bar magnet 51 having a high curie temperature and a lower magnet 52 having a low curie temperature and provided on a lower temperature, the lower surface 52 of the sealing plate 8 is flush with the lower surface of the bar magnet 8; the battery box 1 is provided with a box notch on one side, the inner wall of the top is attached with a smoke plate 6, the smoke plate 6 comprises a transverse plate 61 with magnetic conductivity and side plates 62 positioned on two sides of the transverse plate 61, the smoke plate 6 is an L-shaped plate with one end extending out of the box notch, and a smoke channel 7 is formed between the smoke plate 6 and the battery cover 22.
The invention has stable operation and convenient disassembly, the outer side of the battery body 23 is provided with the fireproof heat-insulating shell 21, the top end of the shell 21 is provided with the battery cover 22, the lower surface of the battery cover 22 is tightly contacted with the top end of the shell 21 and forms a cavity structure with a sealing function, the battery cover 22 above the battery body 23 is provided with the smoke outlet 4 provided with the sealing plate 8, one end of the sealing plate 8 is in seamless connection with the top of the battery cover 22, the other end of the sealing plate 8 is provided with the strip magnet 5 used for automatically opening and closing, the size of the sealing plate 8 is larger than that of the smoke outlet 4, the sealing plate 8 can cover the smoke outlet 4 to enable the battery body 23 to be in a sealed cavity, the sealing performance is good, the strip magnet 5 comprises the upper strip magnet 51 with high Curie temperature arranged on the upper surface of the sealing plate 8 and the lower strip magnet 52 with low Curie temperature arranged on the lower surface of the sealing plate 8, the lower surface of the lower strip magnet 52 is flush with the lower surface of the sealing plate 8, no gap is ensured when the lower strip magnet 52 is sucked with the upper surface of the battery cover 22, the lower surface of the battery cover 22 is provided with the heat-insulating layer used for automatically opening and closing, the upper surface is provided with the heat-insulating layer, the sealing plate 21 is larger than the size of the smoke outlet 4, the sealing plate 4 can cover effectively cover the heat-insulating layer and the shell 21 can be prevented from generating a large amount of heat loss between the battery body and the battery 21 can be prevented from being formed and heat-free from being expanded, and other heat-free cavity can be prevented from causing the heat expansion; when a plurality of battery devices 2 exist, the battery devices 2 can be distributed in a plurality of rows and a plurality of columns, each row is provided with one smoke channel 7, a box notch is formed in the battery box 1 at one end of each smoke channel 7, the size of the battery box 1 is reduced, the processing and the combination are convenient, the manufacturing cost is low, the occupied space of the battery devices 2 can be reduced by orderly combining a plurality of power batteries, and the space utilization rate is improved.
When in use, when a certain power battery in the battery box 1 is rapidly raised in temperature due to short circuit, overcharging or overdischarging and the like, and smoke is generated or fires, the lower bar magnet 52 with low Curie temperature arranged at the lower part of the sealing plate 8 loses magnetism, the lower bar magnet 52 is separated from the upper surface of the battery cover 22, at the moment, the upper bar magnet 51 with high Curie temperature arranged at the upper part of the sealing plate 8 is attracted by the smoke plate 6 attached to the inner wall of the top of the battery box 1, the smoke plate 6 has magnetism conductivity, after the sealing plate 8 is attracted, the smoke outlet 4 arranged on the battery cover 22 is opened, smoke in the sealed cavity 3 provided with the battery body 23 is dispersed from the smoke outlet 4 to the outside of the battery box 1 through the smoke channel 7 arranged at the upper part of the smoke outlet 4, the smoke channel is formed by the smoke plate 6 attached to the inner wall of the top of the battery box 1 and the upper surface of the battery cover 22, the smoke plate 6 and the battery cover 22 extend out of the notch of the box body to form an L-shaped structure, so that a smoke channel 7 formed between the smoke plate 6 and the battery cover 22 extends out of an opening outside the battery box 1 to be vertical and downward, smoke is timely discharged from the smoke channel 7, the smoke is prevented from being diffused in the sealed cavity 3 provided with the battery body 23, meanwhile, the sealing plates 8 above other battery bodies 23 are positioned in the sealed cavity which is formed by fireproof heat insulation materials and can not be accessed by the smoke, corrosion of the smoke to battery electrodes, connecting sheets and the like can be effectively prevented, damage to electronic components and insulating materials of the power battery caused by the smoke and the like is avoided, normal operation of other power batteries under the conditions of proper temperature and the like is ensured, the service life of the power battery is effectively prolonged, and the use cost is reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a power battery smog diffusion device, includes battery case (1) and dress battery device (2) in battery case (1), its characterized in that: the battery device (2) comprises a shell (21) for fire prevention and heat insulation, a battery cover (22) closely contacted with the upper end of the shell (21) and a battery body (23) arranged in the shell (21), wherein a smoke outlet (4) provided with a sealing plate (8) is formed in the top of the battery cover (22); one end of the sealing plate (8) is in seamless connection with the top of the battery cover (22), and the other end of the sealing plate is provided with a strip magnet (5) for automatically opening and closing;
the strip magnets (5) comprise upper strip magnets (51) with high Curie temperature arranged at the upper part of the sealing plate (8) and lower strip magnets (52) with low Curie temperature arranged at the lower part of the sealing plate (8), and the lower surfaces of the lower strip magnets (52) are flush with the lower surface of the sealing plate (8);
a box body notch is formed in one side of the battery box (1), and a smoke plate (6) is attached to the inner wall of the top of the battery box;
the smoke plate (6) comprises a transverse plate (61) with magnetic conductivity and side plates (62) positioned on two sides of the transverse plate (61), and the smoke plate (6) is an L-shaped plate with one end extending out of the notch of the box body;
a smoke channel (7) is formed between the smoke plate (6) and the battery cover (22).
2. The power cell smoke diffusing device of claim 1, wherein: the size of the sealing plate (8) is larger than that of the smoke outlet (4); the smoke outlet (4) is arranged on a battery cover (22) above the battery body (23).
3. The power cell smoke diffusing device of claim 1, wherein: the upper surface of the battery cover (22) is provided with magnetism conductivity, and the lower surface of the battery cover is provided with a heat insulation layer for fire prevention.
4. The power cell smoke diffusing device of claim 1, wherein: a closed cavity (3) with a sealing function is formed between the shell (21) and the battery cover (22).
5. The power cell smoke diffusing device of claim 1, wherein: the battery device (2) is provided with at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709158.XA CN107579177B (en) | 2017-08-17 | 2017-08-17 | Smoke diffusion device of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709158.XA CN107579177B (en) | 2017-08-17 | 2017-08-17 | Smoke diffusion device of power battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107579177A CN107579177A (en) | 2018-01-12 |
| CN107579177B true CN107579177B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710709158.XA Active CN107579177B (en) | 2017-08-17 | 2017-08-17 | Smoke diffusion device of power battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN107579177B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216628A (en) * | 2018-11-07 | 2019-01-15 | 固德电材系统（苏州）股份有限公司 | A kind of battery pack isolating device and battery pack |
| CN113013531B (en) * | 2019-12-03 | 2022-03-22 | 上海汽车集团股份有限公司 | Battery pack, battery module and battery energy storage device |
| US20230012679A1 (en) * | 2019-12-03 | 2023-01-19 | Saic Motor Corporation Limited | Battery assembly, battery module and battery energy storage device |
| CN113189774B (en) * | 2021-04-16 | 2022-08-19 | 歌尔光学科技有限公司 | Head-mounted device |
| CN113189773B (en) * | 2021-04-16 | 2022-08-19 | 歌尔光学科技有限公司 | Head-mounted device |
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| CN107579177A (en) | 2018-01-12 |
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