CN219497924U - Buffering heat insulation assembly and battery module - Google Patents
Buffering heat insulation assembly and battery module Download PDFInfo
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- CN219497924U CN219497924U CN202320444626.6U CN202320444626U CN219497924U CN 219497924 U CN219497924 U CN 219497924U CN 202320444626 U CN202320444626 U CN 202320444626U CN 219497924 U CN219497924 U CN 219497924U
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- heat insulation
- packaging film
- buffering
- assembly
- cushioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of power batteries, and particularly relates to a buffering heat insulation assembly and a battery module. The buffering heat insulation assembly comprises a heat insulation piece and a plurality of electric core connecting pieces, wherein the heat insulation piece comprises a buffering heat insulation part and a mounting part which is arranged around the edge of the buffering heat insulation part, and the thickness of the mounting part is smaller than that of the buffering heat insulation part; the plurality of cell connectors surround the periphery of the heat insulation piece and are connected with the mounting part. The buffer heat insulation assembly and the battery module have the following beneficial effects: the heat insulation piece is matched with the battery core connecting piece, so that the setting stability of the buffering heat insulation assembly is guaranteed, and the buffering heat insulation assembly has good heat insulation performance and buffering performance; based on this, a plurality of electric core connecting pieces cooperate to enclose to establish around the insulating part to be connected with the installation department, not only be favorable to reducing the whole thickness of buffering thermal-insulated subassembly, simple structure can overcome the problem that the production efficiency that passes unified gluey frame structure to exist is low moreover, is favorable to reducing battery module's manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of power batteries, and particularly relates to a buffering heat insulation assembly and a battery module.
Background
The current lithium ion batteries for vehicles and energy storage have higher requirements on heat insulation and buffering, and especially the electric core in the square shell battery has higher requirements on heat insulation and buffering in the stacking process. In terms of heat insulation performance, different standards at home and abroad limit the heat insulation performance, and the heat transfer between the battery cores is reduced as much as possible in the use process of the battery, so that the safety of the battery in the use process is ensured. In the aspect of buffer performance, cells expand in the charge and discharge process of the battery, and extrusion can be caused to adjacent cells; when thermal runaway occurs, the battery expands, and heat transfer to adjacent battery cells is also increased, so that the buffer performance of the heat insulation pad between the battery cells is also required to be certain.
Most of the currently used heat insulation pads are aerogel, and the buffering effect of the aerogel is limited, so that foam rubber strips with high elasticity are required to be added on the aerogel, but the current foam rubber strips are of an integrated rubber frame structure, and are required to be manufactured through a hot press forming process, so that the production and manufacturing cost is high.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a buffering and heat-insulating assembly and a battery module, which are used for solving the problems of low production efficiency and high cost of the buffering and heat-insulating assembly in the prior art.
To achieve the above and other related objects, the present utility model provides a buffering and heat insulating assembly comprising:
the heat insulation piece comprises a buffering heat insulation part and a mounting part arranged around the edge of the buffering heat insulation part, and the thickness of the mounting part is smaller than that of the buffering heat insulation part; and
the electric core connecting pieces surround the periphery of the heat insulation piece and are connected with the mounting part.
Optionally, the heat insulating member includes a first packaging film, a heat insulating structure, and a second packaging film, the first packaging film, the second packaging film, and the heat insulating structure sandwiched between the first packaging film and the second packaging film form the buffer heat insulating part having a three-layer structure, and the first packaging film and the second packaging film overlap to form the mounting part having a two-layer structure.
Optionally, the first packaging film, the heat insulation structure and the second packaging film are sequentially stacked, the first packaging film and the second packaging film cover the heat insulation structure, and the middle part of the first packaging film, the middle part of the heat insulation structure and the middle part of the second packaging film are overlapped to form the buffer heat insulation part; the edge of the first packaging film is overlapped with the edge of the second packaging film, and the overlapped part is in sealing connection with the mounting part.
Optionally, the middle part of the first packaging film is raised along the direction opposite to the second packaging film to form a raised part, and the second packaging film is tiled and forms an accommodating space for accommodating the heat insulation structure with the raised part.
Optionally, a plurality of the cell connectors enclose a mounting area therebetween, and at least a portion of the bump extends into the mounting area.
Optionally, the insulation structure comprises aerogel panels or aerogel blankets.
Optionally, the cell connector is provided with an adhesion area, and the mounting part is lapped on the adhesion area and is adhered and fixed.
Optionally, the electric core connecting piece is straight strip, and a plurality of electric core connecting pieces are along thermal-insulated piece circumference interval distribution to enclose into intermittent frame form.
Optionally, the electrical core connector comprises a foam rubber strip.
To achieve the above and other related objects, the present utility model also provides a battery module, including the buffering and heat insulating assembly and a plurality of battery cells as described above, wherein the buffering and heat insulating assembly is disposed between two adjacent battery cells, and the heat insulating member is connected with the battery cells through the battery cell connecting member.
As described above, the buffer heat insulation assembly and the battery module have at least the following beneficial effects: the heat insulation piece is matched with the battery core connecting piece, so that the setting stability of the buffering heat insulation assembly is guaranteed, and the buffering heat insulation assembly has good heat insulation performance and buffering performance; based on this, a plurality of electric core connecting pieces cooperate to enclose to establish around the insulating part to be connected with the installation department, not only be favorable to reducing the whole thickness of buffering thermal-insulated subassembly, simple structure can overcome the problem that the production efficiency that passes unified gluey frame structure to exist is low moreover, is favorable to reducing battery module's manufacturing cost.
Drawings
FIG. 1 is a schematic view of an embodiment of a cushioning and heat insulating assembly of the present utility model;
FIG. 2 is an exploded view of the cushioning and thermal insulation assembly of FIG. 1 from a first perspective;
FIG. 3 is an exploded view of the cushioning and thermal insulation assembly of FIG. 1 from a second perspective;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a top view of the cushioning and thermal insulation assembly of FIG. 1;
FIG. 6 is a cross-sectional view at B-B in FIG. 5;
FIG. 7 is an enlarged schematic view of portion C of FIG. 6;
FIG. 8 is an exploded view of the insulation of FIG. 1;
FIG. 9 is an enlarged schematic view of portion D of FIG. 8;
fig. 10 is a partial cross-sectional view of another embodiment of a cushioning and thermal insulation assembly of the present utility model.
Description of the part reference numerals
The heat insulation assembly comprises a buffering heat insulation assembly 1, a heat insulation member 100, a first packaging film 101, a bulge 1011, a heat insulation structure 102, a second packaging film 103, a mounting part 104, a buffering heat insulation part 105, a cell connector 200, an adhesive region 201 and a mounting region 300.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
Referring to fig. 1-3, in some alternative embodiments, the present application provides a battery module including a buffer thermal insulation assembly 1 and a plurality of cells, the buffer thermal insulation assembly 1 being disposed between two adjacent cells. The buffer heat insulation assembly 1 has the functions of heat insulation and buffering, the buffer heat insulation assembly 1 is clamped between two adjacent electric cores, heat transfer between the adjacent electric cores is reduced, mutual extrusion between the adjacent electric cores is avoided when the electric cores expand, and the safety performance of the battery module is improved.
Optionally, the buffer insulation assembly 1 comprises an insulation 100 and a plurality of cell connectors 200, the insulation 100 being connected to the cells by the cell connectors 200.
Referring to fig. 1-3 and 5, in some alternative embodiments, the thermal shield 100 includes a cushioning thermal shield 105 and a mounting portion 104, the mounting portion 104 surrounding an edge of the cushioning thermal shield 105, the mounting portion 104 being connected to the edge of the cushioning thermal shield 105, the thickness of the mounting portion 104 being less than the thickness of the cushioning thermal shield 105; a plurality of cell connectors 200 surrounds the heat insulator 100, and the cell connectors 200 are connected to the mounting portion 104.
Optionally, the plurality of cell connectors 200 are distributed along the circumference of the heat insulating member 100 and enclose a mounting area 300, at least a portion of the buffer heat insulating portion 105 is located in the mounting area 300, and the buffer heat insulating portion 105 is connected to the cell connectors 200 through the mounting portion 104.
Alternatively, the number of the cell connectors 200 is greater than or equal to two, for example, 2, 3, 4, or other values.
Optionally, the plurality of cell connectors 200 are circumferentially spaced along the heat insulating member 100 and are surrounded to form an intermittent frame shape, that is, a gap D1 may be left between two adjacent cell connectors 200, and the size of D1 may be set according to the requirement. Further, the frame shape surrounded by the plurality of cell connectors 200 may be a polygonal frame, such as a square frame, a hexagonal frame, or other irregular frame shapes; specifically, the plurality of electric core connectors 200 can enclose a square frame, and the gaps are arranged at the corners of the square frame, so that the heat insulation member 100 can fully and stably exert the buffering heat insulation performance and save materials.
Optionally, the plurality of cell connectors 200 are circumferentially distributed along the heat insulating member 100 and enclose a continuous frame shape, i.e., two adjacent cell connectors 200 may be abutted against each other. Alternatively, the plurality of cell connectors 200 are circumferentially distributed along the heat insulating member 100, wherein a gap is left between some adjacent two cell connectors 200, and the other adjacent two cell connectors 200 are abutted against each other. Further, the frame shape surrounded by the plurality of cell connectors 200 may be a polygonal frame, such as a square frame, a hexagonal frame, or other irregular frame shape, which is matched with the periphery Xiang Lunkuo of the heat insulating member 100, so that the connection is convenient and reliable.
The buffer heat insulation assembly in the above embodiment, the heat insulation member 100 cooperates with the plurality of cell connectors 200, so that not only the heat insulation performance and the buffer performance of the buffer heat insulation assembly are ensured, but also the overall thickness of the buffer heat insulation assembly is reduced; specifically, the heat insulating member 100 includes a buffering heat insulating portion 105 having a thickness difference and an installation portion 104, and the buffering heat insulating portion 105 having a thickness deviation can ensure the buffering heat insulating performance of the heat insulating member 100 itself, and the plurality of cell connectors 200 are enclosed around the heat insulating member 100 and connected with the installation portion 104 having a thickness deviation, so that the overall thickness of the buffering heat insulating assembly is prevented from being too thick. In addition, set up a plurality of electric core connecting pieces 200, can also reduce production, the assembly degree of difficulty, especially compare with traditional integral type frame structure is glued to the mode that closes through a plurality of electric core connecting pieces 200 and enclose and establish around insulating part 100, the structure of being convenient for simplify electric core connecting piece 200, and the shaping of electric core connecting piece 200 is made simply, can adopt the cross cutting shaping to replace hot briquetting, but the production degree of automation is high, is favorable to saving material and reduce cost.
Referring to fig. 3 and 4, in some alternative embodiments, the cell connector 200 has an adhesive region 201, and the mounting portion 104 is overlapped on the adhesive region 201 and adhesively fixed; the adhesive region 201 may be an adhesive coating disposed on a main body portion of the cell connector 200. Further, the electric core connecting piece 200 comprises a foam rubber strip, the heat insulation piece 100 can be adhered to the electric core through the electric core connecting piece 200, the electric core connecting piece 200 has good elastic deformation performance and flame retardant property, connection between the electric core and the heat insulation piece 100 can be achieved, and the buffering performance of the buffering heat insulation assembly can be further improved. Specifically, the material of the cell connector 200 includes polyurethane, and it is understood that the cell connector 200 may be made of other materials with good elastic deformation performance and fire resistance.
Alternatively, the cell connector 200 is in the shape of a straight bar. Further, the cell connector 200 may have a square strip structure. It is understood that the cell connector 200 may have other shapes, such as a round bar structure or a square block structure.
The buffering heat insulation assembly of the embodiment has the advantages that the electric core connecting piece 200 has high elasticity and fire resistance, adhesive force can be provided, the electric core connecting piece 200 and the heat insulation piece 100 are convenient to achieve fixed connection, incoming materials and lamination are facilitated to be integrated, the pasting and positioning are convenient, the manipulator is convenient to replace manual pasting, automatic assembly is achieved, pasting precision is high, pasting consistency is guaranteed, production efficiency and quality are improved, time for manually pasting adhesive tapes is saved, and labor and cost are saved.
Referring to fig. 3, 5 to 8, in some alternative implementations, the heat insulator 100 includes a first encapsulation film 101, a heat insulating structure 102, and a second encapsulation film 103, the first encapsulation film 101, the second encapsulation film 103, and the heat insulating structure 102 interposed between the first encapsulation film 101 and the second encapsulation film 103 are formed as a buffer heat insulating part 105 of a three-layer structure, and the first encapsulation film 101 and the second encapsulation film 103 are overlapped to form a mounting part 104 of a two-layer structure.
Alternatively, the first packaging film 101 forming the buffer insulating portion 105 and the first packaging film 101 forming the mounting portion 104 may be in a split structure, that is, two independent first packaging films 101, and the second packaging film 103 forming the buffer insulating portion 105 and the second packaging film 103 forming the mounting portion 104 may be in a split structure, that is, two independent second packaging films 103, and the buffer insulating portion 105 and the mounting portion 104 may be integrally connected after being independently fixed and formed.
Alternatively, a part of the first encapsulation film 101 and a part of the second encapsulation film 103 form the buffer insulation portion 105 with the insulation structure 102, and another part of the first encapsulation film 101 and another part of the second encapsulation film 103 form the mounting portion 104, that is, the first encapsulation film 101 forming the buffer insulation portion 105 and the first encapsulation film 101 forming the mounting portion 104 are in an integral structure, and the second encapsulation film 103 forming the buffer insulation portion 105 and the second encapsulation film 103 forming the mounting portion 104 are in an integral structure. Specifically, the first encapsulation film 101, the heat insulation structure 102 and the second encapsulation film 103 are sequentially stacked, and the first encapsulation film 101 and the second encapsulation film 103 cover the heat insulation structure 102, that is, the outer contours of the first encapsulation film 101 and the second encapsulation film 103 are larger than the outer contour of the heat insulation structure 102. Wherein the middle part of the first encapsulation film 101, the heat insulation structure 102 and the middle part of the second encapsulation film 103 are overlapped to form a buffer heat insulation part 105; the edge of the first encapsulation film 101 overlaps the edge of the second encapsulation film 103, and the overlapping portions are hermetically connected to form a mounting portion 104.
Alternatively, the overlapped portion between the first encapsulation film 101 and the second encapsulation film 103 may be sealed by adhesion; alternatively, the overlapping portions may be sealed by thermoplastic sealing or other means.
Alternatively, the insulation structure 102 comprises aerogel panels or an aerogel blanket, i.e., the insulation structure 102 can be a solid structure made of aerogel material, or the insulation structure 102 can be an aerogel blanket.
Alternatively, the materials of the first packaging film 101 and the second packaging film 103 may be polyethylene terephthalate (polyethylene terephthalate, abbreviated as PET). It is understood that the materials of the first packaging film 101 and the second packaging film 103 may be PET, but are not limited to PET.
According to the buffering heat insulation assembly of the embodiment, the first packaging film 101 and the second packaging film 103 are matched with the packaging heat insulation structure 102, so that the quality and the appearance of the heat insulation structure 102 are prevented from being influenced due to powder dropping, and the buffering heat insulation performance of the heat insulation piece 100 is guaranteed.
Referring to fig. 3, 5-9, in some alternative implementations, a first encapsulation film 101 is disposed opposite a second encapsulation film 103 and connected to encapsulate an insulating structure 102 between the first encapsulation film 101 and the second encapsulation film 103. Wherein, the middle part of the first packaging film 101 bulges to form a bulge 1011 along the direction opposite to the second packaging film 103, and the second packaging film 103 is flatly paved and forms an accommodating space for accommodating the heat insulation structure 102 with the bulge 1011.
Alternatively, the first encapsulation film 101 may be manufactured by a thermo-compression molding process.
Optionally, the cell connector 200 blocks at least a portion of the mounting portion 104 from the mounting region 300 enclosed between the plurality of cell connectors 200, and at least a portion of the ridge 1011 extends into the mounting region 300. Further, a part of the surface of the cell connector 200 facing the mounting portion 104 is formed as an adhesive region 201, and the mounting portion 104 is adhered and fixed to the adhesive region 201; specifically, a part of the front surface of the cell connector 200 is formed as an adhesive area 201, and the rear surface of the mounting portion 104 is adhered and fixed to the adhesive area 201.
In the buffer heat insulation assembly in the above embodiment, the first packaging film 101 has the bulge 1011, which can provide an accommodating space for the heat insulation structure 102, so that the front surface of the mounting portion 104 can be flush with the front surface of the rest of the heat insulation member 100, thereby being beneficial to the heat insulation member 100 being assembled and connected with the cell connector 200, the bulge 1011 can be located in the mounting region 300 as much as possible, reducing the space occupied by the heat insulation member 100 outside the mounting region 300, ensuring the heat insulation and buffer performance, and reducing the overall thickness of the buffer heat insulation assembly 1; in addition, the cell connector 200 blocks at least a part of the mounting portion 104 outside the mounting area 300, so that on one hand, the assembly and connection operation is simpler and more convenient, on the other hand, the assembly and positioning are convenient, and the connection is more stable and reliable.
Referring to fig. 10, in some alternative embodiments, the middle portion of the first encapsulation film 101 bulges to form a bulge 1011 in a direction away from the second encapsulation film 103, the middle portion of the second encapsulation film 103 bulges to form another bulge in a direction away from the first encapsulation film 101, and the first encapsulation film 101 and the second encapsulation film 103 bulge to form a bulge 1011 in opposite directions, which is beneficial to increasing the accommodating space for accommodating the insulation structure 102, thereby increasing the thickness of the insulation structure 102 and further improving the insulation performance and buffering performance of the buffering insulation assembly. Wherein, the first packaging film 101 and the second packaging film 103 can be manufactured by adopting a hot press molding process. Of course, the first packaging film 101 and the second packaging film 103 may be flat structures and perform random packaging on the heat insulation structure 102.
According to the buffering heat-insulating assembly and the battery module, the electric core connecting piece 200 is matched with the heat-insulating piece 100, so that the setting stability of the buffering heat-insulating assembly is better, the buffering heat-insulating assembly has good buffering performance and heat-insulating performance, the structure is simple, the assembly is convenient, hot press molding can be replaced by die cutting molding, the production automation degree is high, automatic assembly is realized, the production quality and efficiency of the buffering heat-insulating assembly are improved, and the cost is reduced; in addition, the overall thickness of the buffer heat insulation assembly can be reduced, so that the size of the battery module is reduced, and the small-size and light-weight production of the battery module is realized.
In the description of the present specification, the descriptions of the terms "present embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A cushioning and insulating assembly, comprising:
the heat insulation piece comprises a buffering heat insulation part and a mounting part arranged around the edge of the buffering heat insulation part, and the thickness of the mounting part is smaller than that of the buffering heat insulation part; and
the electric core connecting pieces surround the periphery of the heat insulation piece and are connected with the mounting part.
2. The cushioning and thermal insulation assembly of claim 1, wherein: the heat insulating piece comprises a first packaging film, a heat insulating structure and a second packaging film, wherein the first packaging film, the second packaging film and the heat insulating structure clamped between the first packaging film and the second packaging film form a buffer heat insulating part with a three-layer structure, and the first packaging film and the second packaging film are overlapped to form the mounting part with a two-layer structure.
3. The cushioning and thermal insulation assembly of claim 2, wherein: the first packaging film, the heat insulation structure and the second packaging film are sequentially stacked, the first packaging film and the second packaging film cover the heat insulation structure, and the middle part of the first packaging film, the middle part of the heat insulation structure and the middle part of the second packaging film are overlapped to form the buffering heat insulation part; the edge of the first packaging film is overlapped with the edge of the second packaging film, and the overlapped part is in sealing connection with the mounting part.
4. A cushioning and heat insulating assembly according to claim 3, wherein: the middle part of the first packaging film bulges to form a bulge along the direction opposite to the second packaging film, and an accommodating space for accommodating the heat insulation structure is formed between the second packaging film and the bulge.
5. The cushioning and thermal insulation assembly of claim 4, wherein: and a mounting area is defined among the plurality of cell connectors, and at least one part of the bulge part stretches into the mounting area.
6. The cushioning and thermal insulation assembly of claim 2, wherein: the insulation structure comprises aerogel panels or aerogel blankets.
7. The cushioning and thermal insulation assembly of any of claims 1-6, wherein: the cell connecting piece is provided with an adhesive area, and the mounting part is lapped on the adhesive area and is adhered and fixed.
8. The cushioning and thermal insulation assembly of claim 7, wherein: the electric core connecting pieces are in a straight strip shape, and a plurality of electric core connecting pieces are distributed at intervals along the circumference of the heat insulating piece and are surrounded into an intermittent frame shape.
9. The cushioning and thermal insulation assembly of claim 7, wherein: the electric core connecting piece comprises a foam rubber strip.
10. A battery module, characterized in that: a buffer and thermal insulation assembly and a plurality of electric cells according to any one of claims 1 to 9, wherein the buffer and thermal insulation assembly is arranged between two adjacent electric cells, and the thermal insulation piece is connected with the electric cells through the electric cell connecting pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320444626.6U CN219497924U (en) | 2023-03-09 | 2023-03-09 | Buffering heat insulation assembly and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320444626.6U CN219497924U (en) | 2023-03-09 | 2023-03-09 | Buffering heat insulation assembly and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497924U true CN219497924U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320444626.6U Active CN219497924U (en) | 2023-03-09 | 2023-03-09 | Buffering heat insulation assembly and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497924U (en) |
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2023
- 2023-03-09 CN CN202320444626.6U patent/CN219497924U/en active Active
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