CN220341426U - Cover plate assembly, battery pack and electric equipment - Google Patents
Cover plate assembly, battery pack and electric equipment Download PDFInfo
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- CN220341426U CN220341426U CN202321619816.3U CN202321619816U CN220341426U CN 220341426 U CN220341426 U CN 220341426U CN 202321619816 U CN202321619816 U CN 202321619816U CN 220341426 U CN220341426 U CN 220341426U
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- 239000002131 composite material Substances 0.000 claims abstract description 121
- 239000003365 glass fiber Substances 0.000 claims abstract description 68
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 239000003063 flame retardant Substances 0.000 claims abstract description 18
- 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 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 15
- 238000007731 hot pressing Methods 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 238000001721 transfer moulding Methods 0.000 claims description 8
- 238000000748 compression moulding Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 5
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003892 spreading Methods 0.000 abstract description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009745 resin transfer moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 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
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a cover plate assembly, a battery pack and electric equipment, wherein the cover plate assembly comprises a cover plate main body, the cover plate main body comprises a composite material layer, and the composite material layer comprises a glass fiber composite material layer and a heat insulation fireproof layer; through setting up thermal-insulated flame retardant coating at least on the internal surface of glass fiber composite material layer, when the inside fire that fires of battery package box, can play effectual thermal-insulated fire-retardant effect through thermal-insulated flame retardant coating to prevent to fire the condition of outwards spreading rapidly because of the apron main part is burnt through and take place, and through hot briquetting between thermal-insulated flame retardant coating and the glass fiber composite material layer, need not additionally to set up the protection casing, the structure is more retrencied, can effectively promote the space utilization of battery package, and reduce the cost of manufacture of battery package.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a cover plate assembly, a battery pack and electric equipment.
Background
With the development of new energy industry, the application of lithium battery technology in energy fields such as 3C consumer electronics, power batteries, energy storage and the like is more and more extensive, the associated problems are obvious in the process of using the lithium battery in a large scale, no matter the lithium iron phosphate or the ternary lithium battery, the thermal runaway phenomenon exists in the using process, and various reasons for generating the thermal runaway exist: there are uncontrollable occurrences of cell itself problems, battery pack management problems, thermal management problems, etc.
At present, when the battery is in thermal runaway, the high-voltage arc pulling occurs to the case cover in the related art due to the fact that the case cover is conductive, the fire light can be seen from the outside, the national standard of the thermal runaway in the battery industry is not met, the case cover cannot directly resist flame impact emitted by the battery cell, and the risk that the thermal runaway in the battery pack is outwards extended is caused.
Disclosure of Invention
The embodiment of the utility model provides a cover plate assembly, a battery pack and electric equipment, which are used for solving or at least partially solving the defects in the background art.
In a first aspect, embodiments of the present utility model provide a cover plate assembly comprising:
the cover plate main body comprises a composite material layer, wherein the composite material layer comprises a glass fiber composite material layer and a heat-insulating fireproof layer, and the heat-insulating fireproof layer is at least compounded on the inner surface of the glass fiber composite material layer, and the heat-insulating fireproof layer and the glass fiber composite material layer are integrally formed through a hot-pressing process.
In the cover plate assembly provided by the embodiment of the utility model, the heat-insulating fireproof layer is a Gossla material layer.
In the cover plate assembly provided by the embodiment of the utility model, the glass fiber composite material layer is formed through one process of prepreg mould pressing or resin transfer moulding.
In the cover plate assembly provided by the embodiment of the utility model, the thickness of the cover plate main body is greater than or equal to 1.4 mm and less than or equal to 2.7 mm, and the ratio of the thickness of the heat insulation fireproof layer to the thickness of the glass fiber composite material layer is 0.3-5.
In the cover plate assembly provided by the embodiment of the utility model, the thickness of the glass fiber composite material layer is greater than or equal to 0.9 millimeter and less than or equal to 1.2 millimeter.
In the cover plate assembly provided by the embodiment of the utility model, the thickness of the heat insulation fireproof layer is greater than or equal to 0.5 millimeter and less than or equal to 1.5 millimeter.
In the cover plate assembly provided by the embodiment of the utility model, the heat-insulating fireproof layer at least comprises two heat-insulating fireproof sub-layers, the two heat-insulating fireproof sub-layers are oppositely arranged on two sides of the glass fiber composite material layer, and the two heat-insulating fireproof sub-layers and the glass fiber composite material layer are integrally formed through a hot pressing process.
In the cover plate assembly provided by the embodiment of the utility model, the composite material layer comprises a first composite material sub-layer and a second composite material sub-layer which are stacked, and the first composite material sub-layer and the second composite material sub-layer both comprise the glass fiber composite material layer and the heat insulation fireproof layer;
the glass fiber composite material layer of the first composite material sub-layer is molded through prepreg compression molding, and the glass fiber composite material layer of the second composite material sub-layer is molded through resin transfer molding.
In a second aspect, embodiments of the present utility model provide a battery pack including:
the box body is provided with a first port and a containing cavity;
the battery module is positioned in the accommodating cavity; and
the cover plate assembly according to an embodiment of the first aspect is used for sealing the first port of the box body, wherein the heat-insulating and flame-retardant layer is located on one side, close to the battery module, of the glass fiber composite material layer.
In a third aspect, an embodiment of the present utility model provides a powered device, including a battery pack according to an embodiment of the second aspect.
The embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides a cover plate assembly, a battery pack and electric equipment, wherein the cover plate assembly comprises a cover plate main body, the cover plate main body comprises a composite material layer, and the composite material layer comprises a glass fiber composite material layer and a heat insulation fireproof layer; according to the embodiment of the utility model, the heat-insulating fireproof layer is at least compounded on the inner surface of the glass fiber composite material layer, so that when the interior of the battery pack box body is on fire, the heat-insulating fireproof layer can play a role in effective heat insulation and flame retardance, so that the condition that fire rapidly and outwards spreads due to the fact that the cover plate main body is burnt through is prevented, the heat-insulating fireproof layer and the glass fiber composite material layer are integrally formed through a hot pressing process, a protective cover is not required to be additionally arranged, the structure is simplified, the space utilization rate of the battery pack can be effectively improved, and the manufacturing cost of the battery pack is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present embodiments, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first structure of a cover assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second structure of a cover assembly according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a third structure of a cover assembly according to an embodiment of the utility model.
Description of the reference numerals
1-a cover plate main body; 10-a composite layer; 11-a glass fiber composite material layer; 12-a heat-insulating fireproof layer;
12A-insulating fire-protecting sub-layer; 121A-a first insulating fire-protecting sub-layer; 122A-a second insulating fire-barrier sub-layer;
10A-a first composite sub-layer; 10B-a second composite sub-layer.
Detailed Description
The technical solutions in 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 only some, but not all, 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 fall within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the 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.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The embodiment of the utility model provides a cover plate assembly, a battery pack and electric equipment. The following will describe in detail. The following description of the embodiments is not intended to limit the preferred embodiments.
Referring to fig. 1 to 3, the present embodiment provides a cover assembly, a battery and electric equipment, where the cover assembly includes a cover main body 1, the cover main body 1 includes a composite material layer 10, the composite material layer 10 includes a glass fiber composite material layer 11 and a heat insulation fireproof layer 12, and the heat insulation fireproof layer 12 is at least compounded on an inner surface of the glass fiber composite material layer 11, where the heat insulation fireproof layer 12 and the glass fiber composite material layer 11 are integrally formed by a hot pressing process; it should be noted that, the inner surface of the glass fiber composite layer 11 refers to a side of the glass fiber composite layer 11 near the battery cell module of the battery pack when the cover assembly is used for sealing the port of the battery pack case.
At present, with the development of new energy industry, the problems associated with the lithium battery in the large-batch use process are obvious, and no matter the lithium iron phosphate or the ternary lithium battery, the lithium iron phosphate or the ternary lithium battery has a thermal runaway phenomenon in the use process, and various causes of the thermal runaway are shown: the problems of the battery core, the battery pack management problem, the thermal management problem and the like, and uncontrollable occurrence factors exist; when the battery is in thermal runaway, the case cover generates high-voltage electric arc due to self conduction, and the exterior can see fire, so that the national standard of the thermal runaway in the battery industry is not met, and the case cover cannot directly resist the flame impact emitted by the battery core, so that the thermal runaway in the battery pack has the risk of extending outwards; in the related art, a method of increasing the thickness of the case cover is generally adopted, or a protective cover is additionally arranged between the battery cell and the case body to separate open fire and prevent the open fire from overflowing, however, the scheme not only increases the whole weight of the battery pack and increases the occupied space, but also can increase the consumption of raw materials of the battery case and increase the manufacturing cost.
It can be appreciated that this embodiment is through setting up the apron main part includes the combined material layer, the combined material layer includes glass fine combined material layer and thermal-insulated flame retardant coating, thermal-insulated flame retardant coating at least in on the internal surface of glass fine combined material layer, when the inside fire of battery package box, thermal-insulated flame retardant coating can play effectual thermal-insulated fire-retardant effect to prevent because of the apron main part is burnt and is led to the condition emergence that the fire rapidly outwards spread, and thermal-insulated flame retardant coating with through hot pressing technology integrated into one piece between the glass fine combined material layer, need not additionally to set up the protection casing, the structure is more retrencied, can effectively promote the space utilization of battery package, and reduce the cost of manufacture of battery package.
The technical scheme of the present utility model will now be described with reference to specific embodiments.
In an embodiment, please refer to fig. 1, which is a schematic diagram of a first structure of a cover assembly according to an embodiment of the present utility model.
The present embodiment provides a cover plate assembly, the cover plate gradually includes a cover plate main body 1, the cover plate main body 1 includes a composite material layer 10, and the composite material layer 10 includes a glass fiber composite material layer 11 and a heat insulation fireproof layer 12.
Wherein, the material of the heat-insulating fireproof layer 12 is a high-temperature-resistant heat-insulating material, and the heat-insulating fireproof layer 12 is preferably a Gosla material layer; it can be appreciated that in this embodiment, by disposing the heat-insulating and fire-preventing layer 12 at least on the inner surface of the glass fiber composite material layer 11, when the interior of the battery pack case is on fire, the heat-insulating and fire-retarding layer 12 can play a role in effective heat insulation and fire retardation, so as to prevent the fire from spreading rapidly outwards due to the cover plate main body 1 being burned through.
Further, the material of the glass fiber composite layer 11 includes, but is not limited to, epoxy resin and long-wave fiber, and the glass fiber composite layer 11 may be formed by one of prepreg molding (Prepreg Compression Moldin, PCM for short) or resin transfer molding (Resin Transfer Molding, RTM for short), where the forming method of the glass fiber composite layer 11 is not particularly limited in this embodiment.
It can be understood that, in this embodiment, the glass fiber composite layer 11 is formed by one process of prepreg molding or resin transfer molding, so that the glass fiber composite layer 11 with a multilayer stacked structure is formed, and has high structural strength, is not easy to crack when encountering thermal runaway, has good fireproof performance, and can effectively inhibit and prevent the thermal runaway inside the battery pack from extending outwards; and, through setting up composite material layer 10 includes fine composite material layer 11 of glass and thermal-insulated flame retardant coating 12, when composite material layer 10 is used for new forms of energy electric car, can prolong the time that there is not open flame after the thermal runaway takes place to more than 5 minutes, satisfies the requirement that there is not fire and explosion in the 5 minutes after the thermal runaway of on-vehicle battery new national standard battery promptly, the security improves greatly.
Further, in this embodiment, the heat-insulating and fire-proof layer 12 and the glass fiber composite material layer 11 are integrally formed by a hot-pressing process; specifically, the molding method of the composite material layer 10 includes: providing a forming die, wherein the forming die comprises a lower die and an upper die; coating a Gossla material layer on one side of the upper die close to the lower die, and arranging a glass fiber composite material layer 11 on the upper surface of one side of the lower die close to the upper die; and the upper die and the lower die are combined, and the heat insulation fireproof layer 12 and the glass fiber composite material layer 11 are integrally formed through a hot pressing process by adjusting the temperature and the air pressure of the forming die.
It can be appreciated that, in this embodiment, the heat insulation fireproof layer 12 and the glass fiber composite material layer 11 are integrally formed through a hot pressing process, so that the heat insulation fireproof performance of the cover plate main body 1 can be ensured, and the weight of the cover plate main body 1 can be reduced; and the structure is more simplified, the weight of the battery pack box body is reduced, the manufacturing cost of the battery pack is reduced, and the space utilization rate of the battery pack can be effectively improved.
Further, in the present embodiment, the thickness H of the cover main body 1 is greater than or equal to 1.4 mm and less than or equal to 2.7 mm, and the ratio of the thickness H2 of the heat-insulating and fire-resistant layer 12 to the thickness H1 of the glass fiber composite material layer 11 is 0.3-5; wherein the thickness H of the cover main body 1 is preferably one of 1.5 mm, 1.8 mm, 2.1 mm or 2.4 mm, and the ratio of the thickness H2 of the heat insulation and fire prevention layer 12 to the thickness H1 of the glass fiber composite material layer 11 is preferably one of 0.6, 0.75 or 2.
Specifically, in the present embodiment, the thickness h1 of the glass fiber composite layer 11 is greater than or equal to 0.9 mm and less than or equal to 1.5 mm; the thickness h2 of the heat-insulating and fire-preventing layer 12 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm; the thickness h1 of the glass fiber composite layer 11 is preferably one of 0.5 mm, 1.2 mm or 1.5 mm, and the thickness h2 of the heat-insulating and fire-resistant layer 12 is preferably one of 0.6 mm, 0.9 mm or 1.2 mm, which is not particularly limited in this embodiment.
It can be understood that the thickness of the glass fiber composite material layer 11 is greater than or equal to 0.9 mm and less than or equal to 1.5 mm; the thickness of the heat-insulating and fire-proof layer 12 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm, so that the weight of the cover plate main body 1 is reduced, the weight of the battery pack box body is further reduced, and the energy density of the battery pack is improved.
Fig. 2 is a schematic diagram of a second structure of a cover assembly according to an embodiment of the utility model.
In this embodiment, the structure of the cover assembly is similar to/the structure of the cover assembly provided in the above embodiment, and specific reference is made to the description of the cover assembly in the above embodiment, which is not repeated herein, and the difference between them is only that:
in this embodiment, the heat-insulating fireproof layer 12 includes at least two heat-insulating fireproof sub-layers 12A, the two heat-insulating fireproof sub-layers 12A are oppositely disposed on two sides of the glass fiber composite material layer 11, and the two heat-insulating fireproof sub-layers 12A and the glass fiber composite material layer 11 are integrally formed by a hot-pressing process.
Further, the heat-insulating fireproof layer 12 includes a first heat-insulating fireproof sub-layer 121A and a second heat-insulating fireproof sub-layer 122A, where the first heat-insulating fireproof sub-layer 121A and the second heat-insulating fireproof sub-layer 122A are oppositely disposed on two sides of the first composite material layer 10, and the first heat-insulating fireproof sub-layer 121A, the second heat-insulating fireproof sub-layer 122A and the glass fiber composite material layer 11 are integrally formed through a hot-pressing process.
Specifically, the first heat-insulating fireproof sub-layer 121A is compounded on the inner surface of the glass fiber composite material layer 11, and the second heat-insulating fireproof sub-layer 122A is compounded on the outer surface of the glass fiber composite material layer 11; it should be noted that, when the cover assembly is used to seal the port of the battery pack case, the inner surface of the glass fiber composite material layer 11 refers to a side of the glass fiber composite material layer 11 close to the battery cell module of the battery pack, and the outer surface of the glass fiber composite material layer 11 is a side of the glass fiber composite material layer 11 far away from the battery cell module of the battery pack; the material of the first heat-insulating fireproof sub-layer 121A and the material of the second heat-insulating fireproof sub-layer 122A are both high-temperature-resistant heat-insulating materials; wherein, the first thermal insulation fireproof sub-layer 121A and the second thermal insulation fireproof sub-layer 122A are both preferably layers of gosla material.
It can be appreciated that, in this embodiment, by disposing the first insulating fireproof sub-layer 121A and the second insulating fireproof sub-layer 122A on two opposite sides of the first composite material layer 10, when the interior of the battery pack case body fires, an effective heat-insulating and flame-retardant effect can be achieved by the first insulating fireproof sub-layer 121A, so as to prevent the fire from spreading rapidly outwards due to the cover plate main body 1 being burnt through; meanwhile, the second heat-insulating fireproof sub-layer 122A is arranged on the outer surface of the glass fiber composite material layer 11, so that the fireproof level of the cover plate main body 1 can be further improved; and, through setting up between the thermal-insulated fire prevention sublayer 121A of first, the thermal-insulated fire prevention sublayer 122A of second and the fine combined material layer 11 of glass, through hot briquetting, thereby play the effect that reduces the apron main part 1 cost of manufacture.
It should be understood that, in this embodiment, the insulating and fireproof layer 12 includes at least two insulating and fireproof sub-layers 12A, and the two insulating and fireproof sub-layers 12A are disposed opposite to each other on two sides of the first composite material layer 10 for illustration only, and the number and positions of the insulating and fireproof sub-layers 12A are not limited in this embodiment; for example, in another embodiment, the first insulating and fireproof sub-layer 121A is compounded on the inner surface of the glass fiber composite layer 11, and the second insulating and fireproof sub-layer 122A is disposed on the side of the first insulating and fireproof sub-layer 121A away from the glass fiber composite layer 11, so that different thermal runaway requirements can be achieved by controlling the number of the insulating and fireproof sub-layers 12A.
Fig. 3 is a schematic diagram of a third structure of a cover assembly according to an embodiment of the utility model.
In this embodiment, the structure of the cover assembly is similar to/the structure of the cover assembly provided in the above embodiment, and specific reference is made to the description of the cover assembly in the above embodiment, which is not repeated herein, and the difference between them is only that:
in this embodiment, the composite material layer 10 includes a first composite material sub-layer 10A and a second composite material sub-layer 10B that are stacked, and the first composite material sub-layer 10A and the second composite material sub-layer 10B each include the glass fiber composite material layer 11 and the heat insulation flame retardant layer 12; wherein the glass fiber composite layer 11 of the first composite sub-layer 10A is molded by prepreg compression molding, and the glass fiber composite layer 11 of the second composite sub-layer 10B is molded by resin transfer molding.
It can be appreciated that in this embodiment, the composite material layer 10 includes the first composite material sub-layer 10A and the second composite material sub-layer 10B that are stacked, the glass fiber composite material layer 11 of the first composite material sub-layer 10A is formed by prepreg compression molding, and the glass fiber composite material layer 11 of the second composite material sub-layer 10B is formed by resin transfer molding, so that the cover main body 1 has a complex multi-layer stacked structure, has high structural strength, is not easy to crack when encountering thermal runaway, and can further improve the fire protection level of the cover main body 1.
The embodiment provides a battery pack, the battery pack includes box, battery module and the apron subassembly in any of the above-mentioned embodiments, the box has first port and holds the chamber, the battery module is located hold the intracavity, the apron subassembly is used for sealedly the first port of box, wherein, thermal-insulated flame retardant coating is located the glass fiber composite layer is close to one side of battery module.
Further, the cover plate assembly includes a cover plate body welded with the case to seal the first port of the case.
It will be appreciated that the cover plate assembly has been described in detail in the above embodiments and will not be repeated here.
In this embodiment, the battery can be applied to electric equipment in a plurality of fields such as automobiles, aircrafts, mechanical production equipment, and the like, is used for providing electric energy for the electric equipment, and has strong practicability.
The embodiment provides an electric device, which comprises the battery in any embodiment.
In this embodiment, the electric device includes the battery pack described in any one of the above embodiments, and the battery pack is used as a power supply of the electric device, so that the electric device also has various advantages of the battery pack, thereby helping to simplify the overall structure of the electric device; wherein the electric equipment can be an automobile, an aircraft, mechanical production equipment and the like.
In summary, the cover plate assembly, the battery pack and the electric device provided by the embodiment include a cover plate main body, wherein the cover plate main body includes a composite material layer, and the composite material layer includes a glass fiber composite material layer and a heat insulation fireproof layer; according to the embodiment of the utility model, the heat-insulating fireproof layer is arranged on the inner surface of the glass fiber composite material layer at least, when the interior of the battery pack box body is on fire, the heat-insulating fireproof layer can play a role in effective heat insulation and flame retardance so as to prevent the condition that fire rapidly and outwards spreads due to the fact that the cover plate main body is burnt through, and the heat-insulating fireproof layer and the glass fiber composite material layer are integrally formed through a hot-pressing process, a protective cover is not required to be additionally arranged, the structure is simplified, the space utilization rate of the battery pack can be effectively improved, and the manufacturing cost of the battery pack is reduced.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The cover plate assembly, the battery pack and the electric equipment provided by the embodiment are described in detail, and specific examples are applied to illustrate the principle and the implementation of the utility model, and the description of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.
Claims (9)
1. A cover plate assembly, comprising:
the cover plate main body comprises a composite material layer, wherein the composite material layer comprises a glass fiber composite material layer and a heat-insulating fireproof layer, and the heat-insulating fireproof layer is at least compounded on the inner surface of the glass fiber composite material layer, the heat-insulating fireproof layer and the glass fiber composite material layer are integrally formed through a hot pressing process, and the heat-insulating fireproof layer is a Colsala material layer.
2. The cover assembly of claim 1, wherein the fiberglass composite layer is molded by one of prepreg molding or resin transfer molding.
3. The cover assembly of claim 1, wherein the cover body has a thickness greater than or equal to 1.4 millimeters and less than or equal to 2.7 millimeters, and wherein the ratio of the thickness of the thermally insulating flame retardant layer to the thickness of the fiberglass composite layer is between 0.3 and 5.
4. The cover plate assembly of claim 3, wherein the fiberglass composite layer has a thickness greater than or equal to 0.9 millimeters and less than or equal to 1.5 millimeters.
5. The cover plate assembly of claim 3, wherein the thermally insulating and flame-retardant layer has a thickness greater than or equal to 0.5 millimeters and less than or equal to 1.5 millimeters.
6. The cover plate assembly according to any one of claims 1 to 5, wherein the heat insulating and fireproof layer comprises at least two heat insulating and fireproof sub-layers, the two heat insulating and fireproof sub-layers are oppositely arranged on two sides of the glass fiber composite material layer, and the two heat insulating and fireproof sub-layers and the glass fiber composite material layer are integrally formed through a hot pressing process.
7. The cover plate assembly of any one of claims 1 to 5, wherein the composite layer comprises a first composite sub-layer and a second composite sub-layer disposed in a stack, each comprising the fiberglass composite layer and the thermal insulation flame retardant layer;
the glass fiber composite material layer of the first composite material sub-layer is molded through prepreg compression molding, and the glass fiber composite material layer of the second composite material sub-layer is molded through resin transfer molding.
8. A battery pack, comprising
The box body is provided with a first port and a containing cavity;
the battery module is positioned in the accommodating cavity; and
the cover assembly of any one of claims 1 to 7, for sealing the first port of the case, wherein the insulating and flame-retardant layer is located on a side of the fiberglass composite layer adjacent to the battery module.
9. A powered device comprising the battery pack of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619816.3U CN220341426U (en) | 2023-06-25 | 2023-06-25 | Cover plate assembly, battery pack and electric equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321619816.3U CN220341426U (en) | 2023-06-25 | 2023-06-25 | Cover plate assembly, battery pack and electric equipment |
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| CN220341426U true CN220341426U (en) | 2024-01-12 |
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| CN202321619816.3U Active CN220341426U (en) | 2023-06-25 | 2023-06-25 | Cover plate assembly, battery pack and electric equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073734A (en) * | 2024-04-22 | 2024-05-24 | 宁德时代新能源科技股份有限公司 | Shell for battery monomer, battery and power utilization device |
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2023
- 2023-06-25 CN CN202321619816.3U patent/CN220341426U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118073734A (en) * | 2024-04-22 | 2024-05-24 | 宁德时代新能源科技股份有限公司 | Shell for battery monomer, battery and power utilization device |
| CN118073734B (en) * | 2024-04-22 | 2024-08-30 | 宁德时代新能源科技股份有限公司 | Shell for battery monomer, battery and power utilization device |
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