CN218069993U

CN218069993U - Battery heat insulation part

Info

Publication number: CN218069993U
Application number: CN202222438864.4U
Authority: CN
Inventors: 白红燕; 张士荟; 牛力; 赵幸一
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-12-16
Anticipated expiration: 2032-09-13

Abstract

The utility model discloses a battery heat insulation component, which comprises a heat insulation part, wherein the heat insulation part comprises a heat insulation layer and a protective film, and the protective film is attached to two opposite large surfaces of the heat insulation layer; the supporting part, the supporting part includes supporter and extension, and the extension forms thermal-insulated chamber with the supporter, and the inside in thermal-insulated chamber is inlayed to thermal-insulated portion part, and the side of supporting part cladding thermal-insulated portion at least, and wherein, the side is the face adjacent with the big face, solves the protection film among the current heat insulating mattress and leads to the problem of damaged inefficacy easily because extrusion deformation in the use.

Description

Battery heat insulation part

Technical Field

The utility model relates to a battery field especially relates to a battery heat-insulating part.

Background

With the daily and new updating of intelligent electronic products, the performance is stronger and stronger, the power consumption and the heat productivity are larger and larger, and with the exhaustion of fuel oil and the increasingly serious air pollution, new energy automobiles are more and more popularized, the new energy automobiles have higher requirements on the energy density of lithium batteries, the heat management scheme is more and more important, the heat conduction scheme, the heat dissipation scheme and the heat insulation scheme are fully combined, the use safety and stability of the intelligent electronic products and the power batteries are fully improved, and better experience and safety guarantee are brought to users.

In the conventional battery, some heat insulation materials are generally adopted for heat insulation, and a related protective layer is arranged on the outer layer of the heat insulation materials for protecting the heat insulation materials, so that the safety and the stability of the battery in the assembling and using processes are fully ensured, for example, in the thin aerogel heat insulation sheet of an authorization publication No. CN207466048U published in 2018, no. 06, 08, the conventional thin aerogel heat insulation sheet further improves the heat insulation effect and the moisture and fire resistance.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one kind of defect of above-mentioned prior art, the utility model provides a battery heat-insulating part solves the protection film among the current heat insulating mattress and leads to the problem of damaged inefficacy because extrusion deformation easily in the use.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a battery thermal insulation component comprising:

the heat insulation part comprises a heat insulation layer and a protective film, and the protective film is attached to two opposite large surfaces of the heat insulation layer;

the supporting part comprises a supporting body and an extending part, the extending part and the supporting body form a heat insulation cavity, the heat insulation part is partially embedded into the heat insulation cavity, and the supporting part at least wraps the side face, which is not attached with the protective film, of the heat insulation part.

When the assembly contact between other subassemblies with the battery package, the atress of battery heat insulating part mainly acts on the supporting part that is used for supporting heat insulating part, the problem of the direct atress of heat insulating part has not only been avoided very effectively, the heat insulating part that also protects this battery heat insulating part does not receive the extrusion damage when monomer battery spare produces inflation deformation, the extruded degree of single cell and battery pack of heat insulating part in the battery package has been reduced promptly when the inflation that generates heat, and then improve and solve the problem that the protection film among the current heat insulating mattress leads to the damage inefficacy because of extrusion deformation easily in the use, simultaneously, because other subassemblies of heat insulating part non-direct contact or incomplete contact battery package, the unable direct quick transmission of heat is to heat insulating part or local transmission to heat insulating part, thereby the thermal-insulated effect of this battery heat insulating part has effectively been improved.

To sum up, the utility model provides a pair of battery heat-proof component has following technological effect:

bear the most atress of thermal-insulated portion through the supporting part to improve and solve the protection film among the current heat insulating mattress and lead to the problem of damaged inefficacy because extrusion deformation easily in the use, and simultaneously, effectively improved the thermal-insulated effect of thermal-insulated portion.

Drawings

Fig. 1 is a first plan view of a battery heat insulating member according to the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a first structural view of a battery thermal insulation component of the present invention;

fig. 4 is a partial enlarged view at C in fig. 3;

fig. 5 is a second plan view of a battery heat insulating member according to the present invention;

FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a second structural view of a battery heat insulating member according to the present invention;

fig. 8 is a partial enlarged view of fig. 7 at D.

An icon: 1-heat insulation part, 11-heat insulation layer, 111-large surface, 12-protective film, 2-support part, 21-support body, 211-first clamp body, 212-second clamp body, 22-extension part and 23-heat insulation cavity.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 isbase:Sub>A first plan view of the battery heat insulating member, fig. 2 isbase:Sub>A schematic sectional view taken alongbase:Sub>A-base:Sub>A in fig. 1, fig. 5 isbase:Sub>A second plan view of the battery heat insulating member, fig. 6 isbase:Sub>A schematic sectional view taken along B-B in fig. 5, and with reference to fig. 1, fig. 2, fig. 5 and fig. 6, the present invention disclosesbase:Sub>A battery heat insulating member, which includes:

the battery pack comprises a heat insulation part 1, wherein the heat insulation part 1 comprises a heat insulation layer 11 and a protection film 12, the protection film 12 is attached to two opposite large surfaces 111 of the heat insulation layer 11, specifically, the two opposite large surfaces 111 of the heat insulation layer 11 are two side surfaces which have the largest areas and are arranged oppositely on the heat insulation layer 11, and are also surfaces adjacent to single batteries in the battery pack, wherein the heat insulation layer 11 is an aerogel layer or a phase change material layer, and the protection film 12 is a PET (polyethylene terephthalate) film or an aluminum plastic film;

the support part 2, the support part 2 includes the support 21 and extension 22, the extension 22 and support 21 form the heat insulation chamber 23, the heat insulation part 1 is partly embedded in the heat insulation chamber 23, and the support part 2 at least covers the side of the heat insulation part 1, the side is the adjacent surface of the large surface 111. The support body 21 and the extension portion 22 are integrally formed, and the support portion 2 is made of an elastic material, such as silicon rubber, or natural rubber.

In this embodiment, the protective film 12 covers only the heat insulating layer 11, that is, the heat insulating portion 1 is embedded in the heat insulating cavity 23 of the supporting portion 2, the protective film 12 is located between the heat insulating layer 11 and the inner side wall of the heat insulating cavity 23, the size of the heat insulating cavity 23 is selectable to be matched with the size of the heat insulating portion 1 along the thickness direction cross section, so that the heat insulating portion 1 can be detachably engaged with the heat insulating cavity 23 of the supporting portion 2, and then the supporting portion 2 can be pressed against the edge of the heat insulating portion 1, in addition, the size of the heat insulating cavity 23 can be larger than the size of the heat insulating portion 1 along the thickness direction cross section within the range of the design tolerance or the assembly tolerance, and the heat insulating portion 1 is connected with the supporting portion 2 by glue, so that the supporting portion 2 can be tightly adhered to the edge of the heat insulating portion 1, it should be noted that the glue connection includes a manner of non-detachable adhesive connection, and also includes a manner of glue connection employing a detachable sealant. In the production and assembly process of the battery heat insulation component, the two supporting parts 2 are respectively embedded and fixed at the two opposite ends of the heat insulation part 1, the heat insulation part 1 is packaged and shaped under the action of the supporting parts 2, and the heat insulation part 1 is limited in the heat insulation cavity 23 of the supporting parts 2.

When this battery heat insulating part assembles on the battery package, because effort in the assembling process mainly acts on supporting part 2, be promptly for contact and atress between this battery heat insulating part and other subassemblies of battery package on supporting part 2, on the one hand, the phenomenon that heat insulating part 1 carries out direct atress in the assembling process has been avoided very effectively, protection heat insulating part 1 does not receive the extrusion damage when battery and battery pack in the battery package produce the inflation, the degree that battery and battery pack of heat insulating part 1 in the battery package receive the extrusion when the inflation that generates heat has been reduced promptly, thereby reduce heat insulating part 1's failure rate, this battery heat insulating part's stability in the use has finally been guaranteed, on the other hand, because heat insulating part 1 does not directly contact or incompletely contact other subassemblies of battery package, heat can't directly transmit to heat insulating part 1 fast or transmit to heat insulating part 1 locally, thereby the thermal-insulated effect of this battery heat insulating part has effectively been improved.

It should be noted that, without being limited to the preferred embodiment of the two support portions 2, at least one support portion 2 may be ensured to be embedded in and act on the heat insulating portion 1.

In addition, unexpected, this battery heat insulating part mainly produces the combination by heat insulating part 1 and supporting part 2, simple structure, and simultaneously, the protection film 12 of heat insulating part 1 lays on insulating layer 11, can also carry out spacing through the heat insulating chamber 23 of supporting part 2, simplifies insulating layer 11 encapsulation procedure to save this battery heat insulating part packaging in-process production material and manufacturing cost.

In the above description, as shown in the first structural view of the battery heat insulating member shown in fig. 3 and the enlarged partial view of fig. 3C shown in fig. 4, the protective film 12 is attached to only the two large faces 111 of the heat insulating layer 11, and the protective film 12 is not attached to the other side faces of the heat insulating layer 11, at this time, at least part of the side faces of the heat insulating layer 11 is wrapped by the extension portion 22 on the support 21, and the side faces of the heat insulating layer 11 are attached by the structure of the extension portion 22, so that the heat insulating layer 11 is protected, and the structure of the heat insulating cavity 23 is more stable.

Of course, as shown in fig. 2, the protective film 12 can be attached to any one side surface of the thermal insulation layer 11, but is not limited to one side surface of the thermal insulation layer 11, and may also be any two side surfaces of the thermal insulation layer 11, or any three side surfaces of the thermal insulation layer 11, or four side surfaces of the thermal insulation layer 11, so that the protective area of the protective film 12 on the thermal insulation layer 11 is increased, and the protective effect of the protective film 12 on the thermal insulation layer 11 is further effectively improved.

It should be noted that, as shown in a second structural diagram of the battery heat insulating member shown in fig. 7, and as shown in fig. 5 and fig. 6 in combination with a partially enlarged view of a part D in fig. 7 shown in fig. 8, the support body 21 includes a first clamping body 211 and a second clamping body 212, both the first clamping body 211 and the second clamping body 212 are provided with an extending portion 22, the first clamping body 211 and the second clamping body 212 are disposed opposite to each other, and the extending portion 22 of the first clamping body 211 and the extending portion 22 of the second clamping body 212 are clamped in the heat insulating portion 1. Therefore, in the process of assembling the supporting part 2 and the heat insulating part 1, the first clamp body 211 and the heat insulating part 1 are assembled firstly, and then the second clamp body 212 is pressed and assembled on the heat insulating part 1, so that the heat insulating part 1 can be embedded into the heat insulating cavity 23 more neatly and tightly, in addition, the assembly between the supporting part 2 and the heat insulating part 1 is more convenient, and the production efficiency of the battery heat insulating component is improved.

Further, as shown in fig. 2 and fig. 6, a positioning portion is preferably disposed inside the heat insulation cavity 23, and the positioning portion is preferably triangular, and certainly can have an arc-shaped shuttle shape, so that when the heat insulation portion 1 is partially embedded inside the heat insulation cavity 23, a certain centering and limiting effect can be achieved under the action of the positioning portion. In addition, when the supporting part 2 is assembled to the battery pack to be stressed, the acting force acts on the heat insulating part 1 again along the inclined surface of the positioning part, and the acting area is increased compared with the case that only the extending part 22 acts on the heat insulating part 1, thereby reinforcing and positioning the heat insulating part 1 by the positioning part.

Further, as shown in fig. 2 and fig. 6, the extension height H of the extension portion 22 is not less than 0.5 mm. When the extension height H of the extension portion 22 is less than 0.5mm, the contact action surface between the extension portion 22 and the heat insulating portion 1 is extremely small, which is not favorable for the stable assembly between the supporting portion 2 and the heat insulating portion 1. When the extension height H of the extension portion 22 is equal to 0.5mm and exceeds 0.5mm, the extension portion 22 can have enough contact action surface to act on the heat insulation portion 1, and the heat insulation portion 1 can be stably embedded and clamped in the heat insulation cavity 23 of the support portion 2.

In addition, in order to achieve the above-mentioned purpose that when the battery heat insulating member is assembled on the battery pack, the acting force of the battery pack in the assembling process mainly acts on the supporting portion 2, specifically, as shown in fig. 2 and fig. 6, the thickness B of the supporting portion 2 can be selected to be equal to the thickness of the heat insulating portion 1, at this time, since the material hardness of the supporting portion 2 is greater than the material hardness of the heat insulating portion 1, when the battery heat insulating member is assembled on the battery pack, the acting force of the battery pack still mainly acts on the supporting portion 2 of the battery heat insulating member, and when the battery of the battery pack is subjected to expansion deformation in the using process, the expansion deformation amount is effectively absorbed by the heat insulating portion 1, so that the heat insulating portion 1 is compressed from the original side edge, and the slightly expanded state in the middle is restored to the effect of balancing the acting force on both the side edge and the middle, thereby ensuring that the protective film 12 of the heat insulating portion 1 is not damaged.

Preferably, the thickness B of the support part 2 is greater than the thickness of the heat insulating part 1, and when the battery heat insulating member is assembled on the battery pack, an assembly gap is formed between the battery pack and the heat insulating part 1, so that the extrusion force of the battery pack on the heat insulating part 1 is greatly reduced, and meanwhile, the heat insulating effect is also effectively improved.

The thickness B of the support part 2 is between 0.5mm and 10mm, when the thickness B of the support part 2 is less than 0.5mm, the support part 2 is difficult to produce or cannot be produced, and the thickness B of the support part 2 is more than 10mmm, which causes the problem that the space between the battery gaps is too large.

Further, specifically referring to fig. 2 and 6, the total support height T of the support portion 2 is between 2mm and 15mm, and it should be noted that the total support height T of the support portion 2 is a length dimension of the support portion 2 along the extending height direction of the extending portion 22, wherein when the total support height T of the support portion 2 is less than 2mm, it is difficult to manufacture or impossible to manufacture the support portion 2, and the total support height T of the support portion 2 is greater than 15mm, on one hand, the structural dimension of the support portion 2 is too large to shrink the thermal insulation portion 1, which will adversely affect the thermal insulation effect of the battery thermal insulation component, and on the other hand, the structural dimension of the support portion 2 is too large, which is inconvenient for the quantitative production and the assembly with the battery pack.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A battery heat insulating member, comprising:

a heat insulating part (1), wherein the heat insulating part (1) comprises a heat insulating layer (11) and a protective film (12), and the protective film (12) is attached to two opposite large surfaces (111) of the heat insulating layer (11);

the supporting part (2), the supporting part (2) includes supporter (21) and extension (22), extension (22) with supporter (21) form thermal-insulated chamber (23), thermal-insulated portion (1) partial embedding the inside in thermal-insulated chamber (23), and supporting part (2) at least cladding the side of thermal-insulated portion (1), the side be with the face that is adjacent of big face (111).

2. The battery heat insulating member according to claim 1, characterized in that: the protective film (12) is also attached to at least one of the side surfaces of the thermal insulation layer (11).

3. The battery heat insulating member according to claim 1, characterized in that: the supporting body (21) comprises a first clamp body (211) and a second clamp body (212) which are arranged oppositely, the extending portions (22) are arranged on the first clamp body (211) and the second clamp body (212), and the extending portions (22) on the first clamp body (211) and the extending portions (22) on the second clamp body (212) are clamped on the heat insulation portion (1).

4. The battery heat insulating member according to claim 1 or 3, characterized in that: the support body (21) is integrally formed with the extension portion (22).

5. The battery heat insulating member according to claim 4, wherein: the extension height H of the extension part (22) is not less than 0.5 mm.

6. The battery heat insulating member according to claim 4, wherein: the thickness of the support part (2) is greater than or equal to the thickness B of the heat insulation part (1).

7. The battery heat insulating member according to claim 6, wherein: the thickness B of the supporting part (2) is between 0.5mm and 10mm, and the total supporting height T of the supporting part (2) is between 2mm and 15 mm.

8. The battery heat insulating member according to claim 4, characterized in that: the hardness of the support part (2) is greater than or equal to the hardness of the heat insulation part (1).

9. The battery heat insulating member according to claim 4, characterized in that: the heat insulation layer (11) is an aerogel layer or a phase change material layer, and the protection film (12) is a PET film or an aluminum plastic film.

10. The battery heat insulating member according to claim 4, wherein: the supporting part (2) is made of elastic materials.

11. The battery heat insulating member according to claim 1, characterized in that: and a positioning part is arranged in the heat insulation cavity (23) and used for reinforcing and positioning the heat insulation part (1).