CN211530085U - Thermal protection device and power battery pack - Google Patents
Thermal protection device and power battery pack Download PDFInfo
- Publication number
- CN211530085U CN211530085U CN202020428621.0U CN202020428621U CN211530085U CN 211530085 U CN211530085 U CN 211530085U CN 202020428621 U CN202020428621 U CN 202020428621U CN 211530085 U CN211530085 U CN 211530085U
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- battery pack
- layer
- heat
- heat dissipation
- insulation layer
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 62
- 238000009413 insulation Methods 0.000 claims abstract description 46
- 229920002379 silicone rubber Polymers 0.000 claims description 9
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 230000001012 protector Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 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 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Images
Classifications
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The utility model belongs to the technical field of the new energy automobile technique, a hot protector and power battery package are related to. The heat protection device comprises a first heat insulation layer, a second heat insulation layer and a heat dissipation layer, wherein the heat dissipation layer is arranged between the first heat insulation layer and the second heat insulation layer and fixedly connected with the first heat insulation layer and the second heat insulation layer respectively. The thermal protection device can effectively reduce the fire spreading rate and the heat, thereby reducing the time for spreading the fire and greatly increasing the escape time of passengers.
Description
Technical Field
The utility model belongs to the technical field of fuel cell engine system spare part, especially a heat protector and power battery package.
Background
Based on the current situation of environment and energy, new energy automobiles are vigorously developed all over the world. At present, for promoting the endurance capacity of a new energy automobile, the energy density of a battery is greatly promoted, the quality and the space of the whole automobile are reduced, but along with the substantial promotion of the energy density of the battery, thermal runaway easily occurs, so that passengers are safe and have no escape time, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the technical problem of thermal runaway of the conventional power battery pack, the thermal protection device and the power battery pack are provided.
In order to solve the technical problem, an embodiment of the utility model provides a thermal protection device, including first insulating layer, second insulating layer and heat dissipation layer, the heat dissipation layer sets up first insulating layer with between the second insulating layer, respectively with first insulating layer and second insulating layer fixed connection.
Optionally, the first and second thermal insulation layers are both thermally insulating mica sheet layers.
Optionally, the thickness of the first thermally insulating layer is greater than the thickness of the second thermally insulating layer.
Optionally, the heat dissipation layer includes a heat dissipation boss, and the heat dissipation boss is disposed between the first heat insulation layer and the second heat insulation layer, and is connected with the first heat insulation layer and the second heat insulation layer to form a heat dissipation channel in a matching manner.
Optionally, the heat dissipation bosses are uniformly distributed between the first thermal insulation layer and the second thermal insulation layer.
Optionally, the heat dissipation boss is a silicon rubber boss.
Optionally, the first thermal insulation layer is a U-shaped thermal insulation layer.
The embodiment of the utility model provides a thermal protection device when module battery takes place the thermal runaway, through setting up the isolated gas temperature of first insulating layer and second insulating layer to through set up the heat dissipation layer between first insulating layer and second insulating layer, release a large amount of heats, can effectively reduce the intensity of a fire and stretch speed and heat, thereby reduce the time that the intensity of a fire stretchs, greatly increased passenger's time of fleing.
An embodiment of the utility model provides a still provides a power battery package, including battery package upper casing, battery package lower casing, power battery group and hot protector, battery package upper casing and battery package lower casing body coupling form and are used for the holding power battery group with hot protector's holding cavity, first insulating layer among the hot protector with casing fixed connection under the battery package, hot protector sets up on the power battery group.
Optionally, an explosion-proof valve for communicating the accommodating cavity is arranged on the lower shell of the battery pack.
Optionally, a connecting groove is formed in a module end plate of the lower battery pack shell, an internal thread is formed in the connecting groove, a fixing bolt is arranged on the first heat insulation layer, an external thread matched with the internal thread is formed in the fixing bolt, and the fixing bolt is assembled in the connecting groove.
The embodiment of the utility model provides a power battery package, when module battery takes place the thermal runaway, a large amount of high temperature high-pressure gas blowout, and enter hot protector, the second insulating layer among this hot protector can completely cut off partial heat, because the second insulating layer is thinner, gas can be instantaneously through the second insulating layer entering heat dissipation layer, a plurality of heat dissipation channel release a large amount of heat in through the heat dissipation layer, the thermal-insulated fire prevention effect of rethread first insulating layer, can avoid the battery to wrap the casing and burn through, stop oxygen and get into in the power battery package, delay the time that the intensity of a fire stretchs, in order to protect around electric core and battery package casing simultaneously, the heat of can releasing fast, improve the security and the reliability of power battery package.
Drawings
FIG. 1 is a schematic view of a thermal protection device;
the reference numerals in the specification are as follows:
1. a first insulating layer; 21. a heat dissipation boss; 3. a second insulating layer.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the embodiment of the utility model provides a thermal protection device, including first insulating layer 1, second insulating layer 3 and heat dissipation layer, the heat dissipation layer sets up between first insulating layer 1 and second insulating layer 3, respectively with first insulating layer 1 and 3 fixed connection of second insulating layer.
Wherein, this thermal protection device can use in power battery package to when module battery takes place the thermal runaway, effectively reduce thermal diffusion rate and heat, thereby reduce the time that the intensity of a fire stretchs, improve driver's time of fleing greatly.
Optionally, the heat dissipation layer can be fixedly connected with the first heat insulation layer 1 and the second heat insulation layer 3 through an adhesive tape, so that the number of elements is reduced, the structural complexity is reduced, and the cost can be effectively reduced.
It will be understood that the three elements in which combustion occurs include combustibles, high temperatures and oxygen, and that the time for combustion of the combustibles can be delayed by blocking one or more of these three elements when the combustibles have been combusted.
Specifically, this second insulating layer 3 sets up on module battery surface, and first insulating layer 1 is close to the casing setting on the battery package, and when the valve was spouted in the too high emergence of module battery heat, a large amount of high-temperature and high-pressure gases can pass through second insulating layer 3 earlier in the twinkling of an eye, and isolated heat makes the heat can not diffuse adjacent module battery, leads to adjacent module battery to spout the valve, appears the thermal runaway. Then, gaseous heat dissipation layer through setting up between first insulating layer 1 and second insulating layer 3 releases a large amount of heats fast, and finally, the thermal-insulated effect of preventing fires of rethread first insulating layer 1 prevents that the casing from being destroyed on the battery package for oxygen gets into in the power battery package, carries out fire-retardant from these two dimensions of high temperature and oxygen, delays the time of power battery package burning greatly, effectively guarantees passenger's security.
The embodiment of the utility model provides a hot protector is through setting up first insulating layer 1 and second insulating layer 3 with isolated temperature and oxygen to through set up the heat dissipation layer between first insulating layer 1 and second insulating layer 3, release a large amount of heats, can effectively reduce the intensity of a fire and stretch speed and heat, thereby reduce the time that the intensity of a fire stretchs, greatly increased passenger's time of fleing.
In one embodiment, as shown in fig. 1, the first and second insulating layers 1 and 3 are each an insulating mica sheet layer.
In this embodiment, the first heat insulation layer 1 and the second heat insulation layer 3 are both heat insulation mica sheet layers, and due to the properties of high temperature resistance, high pressure resistance and fire resistance of the mica sheets, gas heat can be effectively isolated, so that the heat insulation mica sheet layers are not easily damaged, and the purposes of heat insulation and fire resistance are achieved.
In one embodiment, as shown in fig. 1, the thickness of the first insulating layer 1 is greater than the thickness of the second insulating layer 3.
In this embodiment, the thickness of first insulating layer 1 is greater than the thickness of second insulating layer 3, can guarantee when module battery electricity core spouts the valve, and high temperature high-pressure gas can instantaneously get into heat dissipation layer release heat through second insulating layer 3, avoids high temperature high-pressure gas to be blockked by second insulating layer 3, can't get into heat dissipation layer release heat, effectively protects electric core around.
In one embodiment, as shown in fig. 1, the heat dissipation layer includes a heat dissipation boss 21, and the heat dissipation boss 21 is disposed between the first thermal insulation layer 1 and the second thermal insulation layer 3, and is connected with the first thermal insulation layer 1 and the second thermal insulation layer 3 to form a heat dissipation channel.
Specifically, the heat dissipation layer includes a plurality of heat dissipation bosses 21, and this heat dissipation boss 21 sets up between first insulating layer 1 and second insulating layer 3, is connected with first insulating layer 1 and second insulating layer 3 respectively.
In this embodiment, a plurality of heat dissipation bosses 21 are arranged between the first insulating layer and the second insulating layer 3, and a gap is reserved between two adjacent heat dissipation bosses 21 to form a plurality of heat dissipation channels, so that a large amount of gas heat is released from the gas passing through the second insulating layer 3 through the plurality of heat dissipation channels, and the purpose of heat dissipation is achieved.
In one embodiment, as shown in fig. 1, the heat dissipation bosses 21 are uniformly distributed between the first thermal insulation layer 1 and the second thermal insulation layer 3.
In this embodiment, this heat dissipation boss 21 evenly distributed can be between first insulating layer 1 and second insulating layer 3 to avoid partly heat dissipation boss 21 to be burnt out and lead to collapsing, make heat dissipation channel destroyed, can't realize the heat dissipation, lead to the intensity of a fire to stretch rapidly.
In one embodiment, as shown in fig. 1, the heat dissipation bosses 21 are silicon rubber bosses.
The heat dissipation boss 21 is a silicon rubber boss, and the silicon rubber boss is made of a silicon rubber material with a flame retardant grade of VO. The V0 rating is the highest rating in the fire rating UL 94. In the embodiment, the heat dissipation boss 21 is made of the silicone rubber material with the flame retardant grade of VO, so that the silicone rubber material with the highest flame retardant grade can effectively delay the flame spreading time and strive for the time for passengers to escape. In addition, the high temperature resistance of the silicon rubber material can also reduce the damage rate of the heat dissipation boss 21, and the heat dissipation function can be realized.
Specifically, the upper and lower surfaces of the heat dissipation boss 21 are provided with adhesive tapes, so that the first heat insulation layer 1 and the second heat insulation layer 3 are fixedly connected through the adhesive tapes on the upper and lower surfaces of the heat dissipation boss 21.
In one embodiment, as shown in fig. 1, the first thermal insulation layer 1 is a U-shaped thermal insulation layer.
In this embodiment, first insulating layer 1 is the U type insulating layer, and understandably, first insulating layer 1 is "U" type fixed connection on the heat dissipation layer surface, and the opening part of "U type insulating layer" faces the heat dissipation layer direction to prevent that high temperature flame from the edge injection of edge about from, the protection is electric core around.
The embodiment of the utility model provides a still provide a power battery package, including the battery package casing, power battery group and the hot protector in the above-mentioned embodiment down, casing and battery package casing connection form the holding cavity that is used for holding power battery group and hot protector under the battery package, and casing fixed connection under the first insulating layer 1 among the hot protector and the battery package, hot protector sets up on power battery group.
Wherein, casing fixed connection under first insulating layer 1 among the hot protector and the battery package can absorb high temperature high-pressure gas's impact force, prevents that this hot protector from taking place to remove, effectively protects electric core around.
Specifically, the sticky tape mode and power battery group fixed connection are passed through to one side that deviates from the heat dissipation layer on the second insulating layer 3 among the thermal protector to make the module battery spout the high temperature high-pressure gas that electric core thermal runaway produced and instantaneously get into the heat dissipation layer through second insulating layer 3 among the thermal protector, through the heat dissipation channel release heat in the heat dissipation layer, and because the effect of blockking on first insulating layer 1 and heat dissipation layer, can make gaseous casing direction outflow under the battery package.
In this embodiment, when module battery takes place the thermal runaway, a large amount of high temperature high-pressure gas blowout, and enter into hot protector, but second insulating layer 3 among this hot protector can isolated partial heat, because the second insulating layer is thinner, gas can be instantaneously through second insulating layer 3 entering heat dissipation layer, a plurality of heat dissipation channel release a large amount of heat in through the heat dissipation layer, the thermal-insulated fire prevention effect of rethread first insulating layer 1, can avoid the battery to wrap the casing and burn through, stop oxygen and get into in the power battery package, delay the time that the intensity of a fire stretchs, in order to wrap the casing around protecting electric core and battery simultaneously, can release the heat fast, the security and the reliability of power battery package are improved.
In one embodiment, the lower shell of the battery pack is provided with an explosion-proof valve used for communicating the accommodating cavity.
Specifically, be equipped with the explosion-proof valve that is used for intercommunication holding cavity under the battery package on the casing to pressure in the balanced power battery package, when the module battery spouts electric core thermal runaway, through the thermal-insulated effect that blocks of first insulating layer 1, heat dissipation layer and second insulating layer 3, the casing direction emission under the battery package is spouted to a large amount of high-pressure gas that the valve produced to make the explosion-proof valve that sets up on the casing under the battery package break and release to the outside, plays the effect of pressure release. Further, the explosion-proof valve may be provided with one or more, which is not limited herein.
Optionally, the explosion-proof valve can be installed on the battery pack shell through a screw connection mode or other connection modes, and installation and disassembly are convenient.
In one embodiment, a connecting groove is formed in a module end plate of the lower shell of the battery pack, an internal thread is formed in the connecting groove, a fixing bolt is arranged on the first heat insulation layer 1, an external thread matched with the internal thread is formed in the fixing bolt, and the fixing bolt is assembled in the connecting groove.
Alternatively, a fixing bolt may be partially provided at the edge of the first adiabatic layer 1 and may be fitted in a coupling groove of a module end plate of the lower case of the battery pack to reduce the number of components and reduce costs.
In this implementation, fix on the module end plate of casing under the battery package through the mode of spiro union with 1 marginal part of first insulating layer, easy to assemble and dismantlement.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The thermal protection device is characterized by comprising a first heat insulation layer, a second heat insulation layer and a heat dissipation layer, wherein the heat dissipation layer is arranged between the first heat insulation layer and the second heat insulation layer and is fixedly connected with the first heat insulation layer and the second heat insulation layer respectively.
2. The thermal shield apparatus of claim 1, wherein said first and second insulating layers are each an insulating mica sheet layer.
3. The thermal shield apparatus of claim 2, wherein a thickness of said first layer of insulation is greater than a thickness of said second layer of insulation.
4. The thermal protection device of claim 3, wherein the heat dissipation layer comprises a heat dissipation boss disposed between the first and second thermal insulation layers to form a heat dissipation channel in cooperation with the first and second thermal insulation layers.
5. The thermal shield apparatus of claim 4, wherein said heat dissipating bosses are evenly distributed between said first and second insulative layers.
6. The thermal protection device of claim 4, wherein said heat dissipating bosses are silicone rubber bosses.
7. The thermal protection device of claim 1, wherein said first thermal shield is a U-shaped thermal shield.
8. A power battery pack is characterized by comprising an upper battery pack shell, a lower battery pack shell, a power battery pack and the thermal protection device as recited in claims 1-7, wherein the upper battery pack shell and the lower battery pack shell are connected to form a containing cavity for containing the power battery pack and the thermal protection device, a first heat insulation layer in the thermal protection device is fixedly connected with the lower battery pack shell, and the thermal protection device is arranged on the power battery pack.
9. The power battery pack as recited in claim 8, wherein the battery pack lower housing is provided with an explosion-proof valve for communicating with the accommodating cavity.
10. The power battery pack according to claim 8, wherein a connecting groove is formed in a module end plate of the lower case of the battery pack, an internal thread is formed in the connecting groove, a fixing bolt is arranged on the first heat insulation layer, an external thread matched with the internal thread is formed in the fixing bolt, and the fixing bolt is assembled in the connecting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020428621.0U CN211530085U (en) | 2020-03-27 | 2020-03-27 | Thermal protection device and power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020428621.0U CN211530085U (en) | 2020-03-27 | 2020-03-27 | Thermal protection device and power battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211530085U true CN211530085U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020428621.0U Active CN211530085U (en) | 2020-03-27 | 2020-03-27 | Thermal protection device and power battery pack |
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| CN (1) | CN211530085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671384A (en) * | 2021-08-20 | 2021-11-19 | 华北电力大学（保定） | Battery temperature prediction method and system |
-
2020
- 2020-03-27 CN CN202020428621.0U patent/CN211530085U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671384A (en) * | 2021-08-20 | 2021-11-19 | 华北电力大学（保定） | Battery temperature prediction method and system |
| CN113671384B (en) * | 2021-08-20 | 2023-06-16 | 华北电力大学（保定） | Battery temperature prediction method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220110 Address after: 511400 No.36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GAC AION New Energy Vehicle Co.,Ltd. Address before: 510030 23 building, Cheng Yue mansion 448-458, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: GUANGZHOU AUTOMOBILE GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GAC AION NEW ENERGY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: No. 36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GAC AION New Energy Vehicle Co.,Ltd. Country or region before: China |