CN117477110B - Heat insulation protection assembly for power battery - Google Patents
Heat insulation protection assembly for power battery Download PDFInfo
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- CN117477110B CN117477110B CN202311806316.5A CN202311806316A CN117477110B CN 117477110 B CN117477110 B CN 117477110B CN 202311806316 A CN202311806316 A CN 202311806316A CN 117477110 B CN117477110 B CN 117477110B
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- electric core
- heat insulation
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- battery
- ribs
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- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000017525 heat dissipation Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 43
- 239000011344 liquid material Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 19
- 229910002027 silica gel Inorganic materials 0.000 claims description 19
- 229920002799 BoPET Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 239000004964 aerogel Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a heat insulation protection component for a power battery, which relates to the technical field of heat insulation protection of the power battery, and comprises the following components: a heat insulating sheet installed between the cells, and the heat insulating sheet can separate the cells from the battery case in an independent space; the ventilation grooves are formed in the heat insulation sheet, communicate the independent spaces and coincide with the air flow direction of heat dissipation in the battery shell; a closure assembly disposed within the insulating sheet. When the electric core is out of control, the sealing components in the two heat insulation sheets attached to the electric core seal the ventilation grooves formed on the electric core, so that the electric core in thermal control is isolated in an independent space, the spread of high-temperature smoke and flame is reduced, the influence on the adjacent electric core is reduced, the continuous reaction of the electric core in thermal control is prolonged, the time for greatly burning the battery is prolonged, the time for escaping of passengers is provided, and the safety performance is further improved.
Description
Technical Field
The invention relates to the technical field of heat insulation protection of power batteries, in particular to a heat insulation protection component for a power battery.
Background
In order to reduce and reduce heat conduction between the cells in the power battery and prevent thermal runaway from spreading, a heat insulation board is usually added between the cells to separate the cells, and at present, the heat insulation board in the power battery is generally arranged on a large surface or a side surface of the cells or on upper and lower ends of the cells.
However, if the heat insulation effect is achieved to a large extent if the heat insulation effect is achieved between the side surfaces or the large surfaces of the battery cells, when the battery cells are out of control, the arrangement mode is difficult to block local fire, so that the local fire can smoothly spread to the periphery, and the rapid associated reaction of the thermal control of the battery cells is caused.
Disclosure of Invention
The present invention is directed to a thermal insulation protection assembly for a power battery, which solves at least one technical problem of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a thermal shield assembly for a power cell, comprising:
a heat insulating sheet installed between the cells, and the heat insulating sheet can separate the cells from the battery case in an independent space;
the ventilation grooves are formed in the heat insulation sheet, communicate the independent spaces and coincide with the air flow direction of heat dissipation in the battery shell;
the sealing components are arranged in the heat-insulating sheets, when the electric core is out of control, the sealing components in the two heat-insulating sheets attached to the electric core seal the ventilation grooves formed in the electric core, so that the electric core out of control is separated from the adjacent electric core, and the electric core can block the spread of fire.
Preferably, the heat insulation sheet comprises a silica gel frame, extension parts extending out of the length range of the battery cell are arranged on two sides of the silica gel frame, a plurality of ribs are arranged in the silica gel frame, aerogel is filled in the frame between the ribs, PET films are uniformly pressed on two side planes of the silica gel frame, the outer wall of the extension parts is provided with ventilation grooves, and corresponding notches are also provided at positions of the PET films corresponding to the ventilation grooves.
Preferably, the sealing component is provided with a plurality of groups and is respectively positioned in the ribs, the sealing component comprises a middle hole and side holes which are formed in the ribs, the side holes are provided with two groups and are positioned on two sides of the middle hole along the thickness direction of the silica gel frame, a liquid containing tube is arranged in the middle hole, the liquid containing tube can elastically deform, sliding strips are slidably arranged at the outlets of the two side holes, a puncture blade is fixed on one surface of each sliding strip, facing the liquid containing tube, a bent rod embedded in the rib is connected between the two sliding strips in the same side hole, and the arc top of the bent rod protrudes outwards;
the inside of extension has seted up hollow chamber, the inner wall that the ventilation groove was kept away from to hollow chamber is fixed with the air storage bag, the inside in hollow chamber and the inside of flourishing liquid pipe are filled respectively with different liquid materials, and can form thermosetting material when the two mixes.
Preferably, the sliding strip is slidably mounted at the communication position of the side hole and the intermediate hole, and a gap is reserved between the sliding strip and the side hole.
Preferably, both end positions of the liquid containing tube are tapered portions, and the tapered portions have a smaller cross section as they approach the end portions.
Preferably, the liquid containing tube has telescopic parts at two ends, and the telescopic parts are in a fold shape and can extend along the axial direction.
Preferably, the air storage bag is provided with a protruding portion at the outer portion, and the protruding portion corresponds to the space between the ribs.
Preferably, the knife surface of the puncture blade is provided with a drainage groove.
Preferably, the inner wall of the ventilation groove is connected with two rows of ribs, and the two rows of ribs are positioned on two sides of the middle hole.
Preferably, vertical guiding grooves connected with the middle holes are formed in the two side walls of the ventilation groove.
Compared with the prior art, the invention has the following beneficial effects:
when the battery cells work normally, the ventilation grooves can keep the air in the independent space where each battery cell is positioned to circulate, so that the heat dissipation efficiency of the battery cells is ensured;
when the electric core is out of control, the ventilation groove arranged on the electric core is closed by the closing component in the two heat insulation sheets attached to the electric core, so that the electric core in thermal control is isolated in an independent space, the high-temperature smoke and flame spread are reduced, the influence on the adjacent electric core is reduced, the continuous reaction of the electric core in thermal control is prolonged, the time of burning the battery is prolonged greatly, the time is provided for passengers to escape, and the safety performance is further improved.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a silica gel frame and a PET film of the invention after being combined;
FIG. 2 is an exploded view of the silicone frame and PET film of the present invention;
FIG. 3 is a schematic illustration of the thermal insulation sheet of the present invention installed between electrical cells;
FIG. 4 is a cross-sectional view and a partial enlarged view of the rib of the present invention;
FIG. 5 is an enlarged partial cross-sectional view of a silicone frame of the present invention;
FIG. 6 is a schematic view of a liquid container according to a first embodiment of the present invention;
FIG. 7 is a schematic view of a liquid container according to a second embodiment of the present invention;
FIG. 8 is a partial schematic view of a central bore of the present invention;
fig. 9 is a cross-sectional view of the vent slot of the present invention and a partial enlarged view at the intermediate hole.
In the figure: 1. a silica gel frame; 2. an aerogel; 3. a PET film; 4. ribs; 5. an extension; 6. a ventilation groove; 7. a battery case; 8. a battery cell; 9. a middle hole; 10. a side hole; 11. a liquid containing tube; 11a, a taper portion; 11b, a telescopic part; 12. a sliding bar; 13. a curved bar; 14. a piercing blade; 15. a hollow cavity; 16. an air storage bag; 17. a rib; 18. drainage groove.
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 to 9, the present invention provides a technical solution: a thermal shield assembly for a power cell, comprising:
a heat insulating sheet installed between the battery cells 8, and the heat insulating sheet can separate the battery cells 8 in a separate space from the battery case 7;
a ventilation groove 6 formed in the heat insulating sheet, the ventilation groove 6 communicating each independent space and being coincident with the air flow direction of heat dissipation in the battery case 7;
the sealing components arranged in the heat-insulating sheets are used for sealing the ventilation grooves 6 formed in the two heat-insulating sheets when the electric core 8 is out of control, so that the electric core 8 out of control is separated from the adjacent electric core 8, and the spread of fire is blocked.
According to researches, the heat insulation sheets are added between the battery cells 8 and the battery cells 8, so that heat conduction between the battery cells 8 can be reduced, and the spread of thermal runaway is prevented, but the heat dissipation efficiency of the battery cells 8 is also reduced, and because the heat dissipation mode of the battery cells is more common, namely air cooling, liquid cooling and natural convection, the ventilation grooves 6 are formed in the heat insulation sheets, so that the heat insulation sheets are matched with air flow of air cooling or natural convection, and under the condition that the battery cells 8 work normally, the ventilation grooves 6 can be used for keeping air in independent spaces where the battery cells 8 are positioned to circulate, so that the heat dissipation efficiency of the battery cells 8 is ensured;
when the thermal runaway occurs in the battery cell 8, the battery cell 8 is heated firstly and then swelled to expand, finally the thermal runaway begins to burn, when the thermal runaway occurs, the ventilation slots 6 formed in the battery cell 8 are sealed by the sealing components in the two heat insulation sheets attached to the battery cell 8, so that the thermal runaway battery cell 8 is isolated in an independent space, the spreading of high-temperature smoke and flame is reduced, the influence on the adjacent battery cell 8 is reduced, the joint reaction of the thermal runaway of the battery cell 8 is prolonged, the time for the battery to burn is prolonged greatly, the time is provided for the escape of passengers, and the safety performance is further improved.
In one of the preferred embodiments, the heat insulation sheet comprises a silica gel frame 1, extension parts 5 extending out of the length range of the battery cell 8 are arranged on two sides of the silica gel frame 1, a plurality of ribs 4 are arranged in the frame of the silica gel frame 1, aerogel 2 is filled in the frame between the ribs 4, PET films 3 are uniformly coated on two side planes of the silica gel frame 1, a ventilation groove 6 is formed in the outer wall of the extension part 5, and a corresponding notch is formed in the position of the PET film 3 corresponding to the ventilation groove 6.
Referring to fig. 2, the heat insulation sheet is formed by filling aerogel 2 in a silica gel frame 1 and then laminating PET films 3 on two sides of the heat insulation sheet, wherein the ribs 4 further improve the buffering and damping performance of the silica gel frame 1.
In one preferred embodiment, the sealing component is provided with a plurality of groups and is respectively positioned in the ribs 4, the sealing component comprises a middle hole 9 and side holes 10 which are formed in the ribs 4, the side holes 10 are provided with two groups and are positioned at two sides of the middle hole 9 along the thickness direction of the silica gel frame 1, a liquid containing tube 11 is arranged in the middle hole 9, the liquid containing tube 11 can elastically deform, sliding strips 12 are slidably arranged at the outlets of the two side holes 10, a puncture blade 14 is fixed on one surface of the sliding strip 12 facing the liquid containing tube 11, a bent rod 13 embedded in the ribs 4 is connected between the two sliding strips 12 in the same side hole 10, and the arc top of the bent rod 13 protrudes outwards;
the inside of extension 5 has seted up hollow chamber 15, and the inner wall that hollow chamber 15 kept away from ventilation groove 6 is fixed with air storage bag 16, and the inside of hollow chamber 15 and the inside of flourishing liquid pipe 11 are filled respectively and are had different liquid materials, and can form the thermosetting material when the two mixes.
The sealing assembly can specifically refer to fig. 4, 5, 8 and 9, in the normal use state of the battery cell 8, the bent rod 13 can provide a certain supporting effect for the rib 4 so as to increase the buffering effect, and meanwhile, due to the arrangement of the side holes 10, ventilation channels on the front side and the rear side of the battery cell 8 can be communicated, so that the air flow rate during heat dissipation is further improved;
moreover, as the bent rod 13 is embedded into the rib 4 from the side hole 10, the stability of the bent rod 13 can be ensured, the air fluidity of the side hole 10 is not influenced, and the bent rod can not be directly extruded and bent when the functions of buffering and damping are achieved, so that the subsequent false touch condition is avoided;
when the battery cell 8 is out of control, the bulge expansion of the battery cell 8 can squeeze the rib 4, at the moment, the bending of the rib 4 drives the bent rod 13 to bend towards the direction of the liquid containing tube 11 and gradually tends to straighten, in the straightening process, the two ends of the bent rod move against the sliding strips 12 at the two sides, the puncture blade 14 is penetrated into the hollow cavity 15 to puncture the hollow cavity, so that the filled liquid material in the hollow cavity flows out, meanwhile, the squeezing of the rib 4 can act on the liquid containing tube 11, pressure is applied in the middle, the liquid material in the liquid containing tube 11 is squeezed to the two ends, the two ends are inflated and enlarged along with the squeezing of the internal liquid, and the sliding strips 12 are scratched by the puncture blade 14 along with the sliding of the sliding strips 12, and under the action of the squeezing, the internal liquid material flows out, the thermosetting material is formed after the liquid material is mixed with the liquid material in the hollow cavity 15, the ventilation groove 6 is sealed, the battery cell 8 in a separate independent space, the influence on the surrounding battery cell 8 is reduced, and two epoxy hardening agents can be adopted;
it is worth mentioning that, owing to the setting of air storage bag 16, because the heat that the electric core 8 thermal runaway released can make the air inflation in the air storage bag 16 to make air storage bag 16 exert an inside extrusion effect to the liquid material in the hollow chamber 15, both can make things convenient for piercing blade 14's puncture, also can flow out fast under the internal pressure effect after the puncture simultaneously, and mix with the liquid material that extrudes in the liquid pipe 11 and form thermosetting material, the formation in isolated space has been quickened, in order to reduce the influence to surrounding electric core 8 at the thermal runaway earlier stage to the maximize, further play the time that extension electric core 8 is reacted in succession.
In one of the preferred embodiments, the sliding bar 12 is slidably mounted in the communication between the side hole 10 and the intermediate hole 9, and a gap is left between the sliding bar 12 and the side hole 10.
Referring to fig. 8, the side hole 10 is circular, and the sliding bar 12 is semicircular, so that on one hand, the influence on the ventilation of the side hole 10 is reduced, and on the other hand, when the rib 4 is extruded, the rib 10 can be prevented from deforming to lock the sliding bar 12, so that the rib cannot extend outwards, and the puncture of the hollow cavity 15 is ensured.
In the first embodiment, a shape of the liquid containing tube 11 is provided as shown in fig. 6;
both end positions of the liquid containing tube 11 are tapered portions 11a, and the tapered portions 11a have a smaller cross section as they are closer to the end portions.
By providing the tapered portion 11a, the piercing blade 14 can be prevented from being scratched by the erroneous contact with the liquid containing tube 11, and only after the middle portion of the liquid containing tube 11 is pressed, the liquid in the liquid containing tube 11 flows into the tapered portions 11a at both ends, and the position is expanded to be scratched by the contact with the piercing blade 14.
And the length of the taper portion 11a may be set to coincide with the length of the puncture blade 14 to correspond to the use of the puncture blade 14.
In the second embodiment, the shape of the second liquid containing tube 11 is provided as shown in fig. 7;
the liquid containing tube 11 has extension portions 11b at both end positions, and the extension portions 11b are folded and can extend in the axial direction.
The purpose of the first embodiment can be achieved by providing the fold-shaped expansion part 11b, and the expansion part 11b can be driven to extend only when the liquid moves to the two ends after the middle part of the liquid containing tube 11 is extruded, so that the liquid can be scratched by contacting with the puncture blade 14;
in this way, the length of the liquid containing tube 11 can be appropriately shortened, and the end position of the expansion and contraction part 11b can be made to correspond to the initial position of the puncture blade 14, and the situation that the puncture blade 14 is scratched by the false touch of the liquid containing tube 11 can be avoided.
In one of the preferred embodiments, the exterior of the reservoir bag 16 is provided with bosses which correspond to spaces between the ribs 4.
Referring to fig. 5, by providing the raised portion of reservoir 16, it is possible to more effectively exert an outward squeezing effect on the liquid material within hollow chamber 15.
In one preferred embodiment, the blade surface of the piercing blade 14 is provided with a drainage groove 18.
Referring to fig. 9, the drainage groove 18 is formed on the knife surface of the puncture blade 14, so that the outflow of the liquid material can be quickened, and a certain guiding function can be achieved, so that the two liquid materials flowing out of the drainage groove can be quickly contacted and mixed, and are gradually solidified into a thermosetting material in the downward flowing process.
In one of the preferred embodiments, the inner wall of the ventilation slot 6 is connected with two rows of ribs 17, and the two rows of ribs 17 are located on both sides of the middle hole 9.
The ribs 17 can play a certain role in adhering two sprayed liquid materials, so that outflow of the liquid materials is reduced, and the ribs 17 can play a certain role in reinforcing ribs after the liquid materials are solidified into a thermosetting material.
In one of the preferred embodiments, both side walls of the ventilation slot 6 are provided with vertical guide slots connected to the intermediate hole 9.
The purpose of the vertical guide channel, not shown in the figures, is to guide the flow of the guide material along the inner wall of the ventilation channel 6 and during the flow the two gradually mix and solidify.
The standard components used in the present embodiment may be purchased directly from the market, and the nonstandard structural components according to the descriptions of the specification and the drawings may also be obtained directly by unambiguous processing according to the common general knowledge in the prior art, and meanwhile, the connection manner of each component adopts the conventional means mature in the prior art, and the machinery, the components and the equipment all adopt the conventional types in the prior art, so that the specific description will not be made here.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A thermal shield assembly for a power cell, comprising:
a heat insulation sheet installed between the battery cells (8), and the heat insulation sheet can separate the battery cells (8) from the battery case (7) in independent spaces;
a ventilation groove (6) arranged on the heat-insulating sheet, wherein the ventilation groove (6) communicates each independent space and is matched with the air flow direction of heat dissipation in the battery shell (7);
when the electric core (8) is out of control, the sealing components in the two heat insulation sheets attached to the electric core seal the ventilation grooves (6) arranged on the electric core, so that the electric core (8) out of control is separated from the adjacent electric core (8) and the spread of fire is blocked;
the heat insulation sheet comprises a silica gel frame (1), extension parts (5) extending out of the length range of a battery cell (8) are arranged on two sides of the silica gel frame (1), a plurality of ribs (4) are arranged in the frame of the silica gel frame (1), aerogel (2) is filled in the frame between the ribs (4), PET films (3) are uniformly coated on two side planes of the silica gel frame (1), a ventilation groove (6) is formed in the outer wall of the extension parts (5), and corresponding notches are formed in positions, corresponding to the ventilation groove (6), of the PET films (3);
the sealing assembly is provided with a plurality of groups and is respectively positioned in the ribs (4), the sealing assembly comprises a middle hole (9) and side holes (10) which are formed in the ribs (4), the side holes (10) are provided with two groups and are positioned at two sides of the middle hole (9) along the thickness direction of the silica gel frame (1), a liquid containing tube (11) is arranged in the middle hole (9), the liquid containing tube (11) can elastically deform, sliding strips (12) are slidably arranged at the outlets of the two side holes (10), a puncture blade (14) is fixed on one surface of each sliding strip (12) facing the liquid containing tube (11), a bent rod (13) embedded in the rib (4) is connected between the two sliding strips (12) in the same side hole (10), and the arc top of the bent rod (13) protrudes outwards;
a hollow cavity (15) is formed in the extension part (5), an air storage bag (16) is fixed on the inner wall of the hollow cavity (15) far away from the ventilation groove (6), different liquid materials are respectively filled in the hollow cavity (15) and the liquid containing tube (11), and a thermosetting material is formed when the hollow cavity and the liquid containing tube are mixed;
the bulge expansion of electric core (8) can extrude rib (4), the bending of rib (4) just can drive curved pole (13) and make it crooked and tend to unbend to the direction of flourishing liquid pipe (11) now, and in the process of unbending, its both ends can be moved along slide bar (12) of both sides, puncture blade (14) pierces hollow chamber (15) in, puncture it, make the liquid material of filling in it flow out, and simultaneously, the extrusion that rib (4) received can be acted on flourishing liquid pipe (11), and apply pressure in the centre, liquid material extrusion in flourishing liquid pipe (11) is to both ends department, both ends position can become big along with the extrusion of inside liquid, and utilize puncture blade (14) to also to scratch it along with the slip of slide bar (12), and make the outflow of inside liquid material, form the thermosetting material after mixing with the liquid material in hollow chamber (15), seal groove (6), thereby with the liquid material that thermal runaway in electric core (8) is isolated, wherein can be used for the epoxy resin in the independent space of one, the electric core (8) is influenced in the ventilation, wherein can be reduced.
2. The thermal shield assembly for a power cell of claim 1, wherein: the sliding strip (12) is slidably arranged at the communication position of the side hole (10) and the intermediate hole (9), and a gap is reserved between the sliding strip (12) and the side hole (10).
3. The thermal shield assembly for a power cell of claim 1, wherein: both end positions of the liquid containing tube (11) are provided with conical parts (11 a), and the cross section of the conical parts (11 a) is smaller as the conical parts are closer to the end parts.
4. The thermal shield assembly for a power cell of claim 1, wherein: the liquid containing tube (11) is provided with telescopic parts (11 b) at two end positions, and the telescopic parts (11 b) are in a fold shape and can extend along the axial direction.
5. The thermal shield assembly for a power cell of claim 1, wherein: the outside of gas storage bag (16) is equipped with protruding portion, and protruding portion corresponds in the interval between rib (4).
6. The thermal shield assembly for a power cell of any one of claims 1-5, wherein: the knife surface of the puncture knife blade (14) is provided with a drainage groove (18).
7. The thermal shield assembly for a power cell of any one of claims 1-5, wherein: the inner wall of the ventilation groove (6) is connected with two rows of ribs (17), and the two rows of ribs (17) are positioned at two sides of the middle hole (9).
8. The thermal shield assembly for a power cell of claim 1, wherein: both side walls of the ventilation groove (6) are provided with vertical guide grooves connected with the middle holes (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311806316.5A CN117477110B (en) | 2023-12-26 | 2023-12-26 | Heat insulation protection assembly for power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311806316.5A CN117477110B (en) | 2023-12-26 | 2023-12-26 | Heat insulation protection assembly for power battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117477110A CN117477110A (en) | 2024-01-30 |
| CN117477110B true CN117477110B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311806316.5A Active CN117477110B (en) | 2023-12-26 | 2023-12-26 | Heat insulation protection assembly for power battery |
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| CN (1) | CN117477110B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013246920A (en) * | 2012-05-24 | 2013-12-09 | Tigers Polymer Corp | Battery cooling structure |
| JP2015002166A (en) * | 2013-06-18 | 2015-01-05 | 株式会社Ｇｓユアサ | Lead storage battery |
| CN109071757A (en) * | 2016-05-10 | 2018-12-21 | 心脏起搏器股份公司 | Thermosetting property polyisobutene-polyurethane and preparation method thereof |
| CN212136567U (en) * | 2020-06-24 | 2020-12-11 | 蜂巢能源科技有限公司 | Battery pack box, battery pack and electric vehicle |
| CN113136171A (en) * | 2021-03-29 | 2021-07-20 | 湖北亿纬动力有限公司 | Battery thermal runaway prevention filler and battery module thereof |
| CN113659232A (en) * | 2021-08-04 | 2021-11-16 | 恒大新能源汽车投资控股集团有限公司 | Power battery, electric automobile, and battery thermal control method and system |
| CN116190897A (en) * | 2023-04-27 | 2023-05-30 | 深圳市博硕科技股份有限公司 | PET and silica gel frame packaging structure for power battery |
-
2023
- 2023-12-26 CN CN202311806316.5A patent/CN117477110B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013246920A (en) * | 2012-05-24 | 2013-12-09 | Tigers Polymer Corp | Battery cooling structure |
| JP2015002166A (en) * | 2013-06-18 | 2015-01-05 | 株式会社Ｇｓユアサ | Lead storage battery |
| CN109071757A (en) * | 2016-05-10 | 2018-12-21 | 心脏起搏器股份公司 | Thermosetting property polyisobutene-polyurethane and preparation method thereof |
| CN212136567U (en) * | 2020-06-24 | 2020-12-11 | 蜂巢能源科技有限公司 | Battery pack box, battery pack and electric vehicle |
| CN113136171A (en) * | 2021-03-29 | 2021-07-20 | 湖北亿纬动力有限公司 | Battery thermal runaway prevention filler and battery module thereof |
| CN113659232A (en) * | 2021-08-04 | 2021-11-16 | 恒大新能源汽车投资控股集团有限公司 | Power battery, electric automobile, and battery thermal control method and system |
| CN116190897A (en) * | 2023-04-27 | 2023-05-30 | 深圳市博硕科技股份有限公司 | PET and silica gel frame packaging structure for power battery |
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