Frame structure, thermal insulation assembly, battery module, battery pack and vehicle

Abstract

The utility model relates to battery technology field especially, and more particularly relates to a frame structure, heat insulation subassembly, battery module, battery pack and vehicle, frame structure includes a plurality of frame strips, a plurality of frame strips splicing form frame piece, and frame piece has the accommodating cavity of placing heat insulation pad, sealing piece, sealing piece at least sets up in the splicing place of the bottom in the splicing place of adjacent frame strip, to block the gap of splicing place. The utility model can solve the overflow of glue, guarantee the performance of electric core, can promote the utilization of material, reduce manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a frame structure, a heat insulation component, a battery module, a battery pack, and a vehicle. Background Technology

[0002] Power batteries play a crucial role in daily production and life. During operation, power batteries generate a significant amount of heat, necessitating cooling structures to reduce their temperature. Most existing power batteries employ a bottom-cooling architecture, where a bottom cold plate is connected to the battery cells via thermally conductive adhesive, and heat insulation pads are placed between adjacent cells. These heat insulation pads typically have border strips forming a U-shape, with the heat insulation pad positioned within the U-shaped openings of the border strips and connected to them. This border structure, formed by splicing border strips, has gaps at the joints, allowing the thermally conductive adhesive to seep in and flow between the battery cells and the heat insulation pads, affecting cell performance.

[0003] To solve the above problems, a one-piece mouth frame is usually used. While a one-piece mouth frame completely avoids glue overflow, it has the following drawbacks: 1. Low material utilization: Cutting the mouth frame from a single piece of material results in 30%-50% material waste. 2. High manufacturing costs: High die-cutting development costs and poor versatility. Utility Model Content

[0004] The purpose of this invention is to provide a frame structure, heat insulation component, battery module, battery pack and vehicle that can solve the problem of glue overflow, ensure the performance of battery cells, improve material utilization and reduce manufacturing costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The border structure includes:

[0007] Multiple border strips are spliced ​​together to form a border component, and the border component has a receiving cavity for placing a heat insulation pad;

[0008] A sealing element, wherein the sealing element is provided at least at the bottom joint of adjacent frame strips to seal the gap at the joint.

[0009] In some embodiments, the plurality of border strips include two first border strips and two second border strips, the two first border strips are spaced apart along a first direction, the two second border strips are spaced apart along a second direction, and the two second border strips are located between the two first border strips. The two first border strips and the two second border strips enclose a U-shaped border member, and the sealing member is disposed at the joint between the first border strips and the second border strips.

[0010] In some embodiments, the seal is U-shaped, and the joint between the first and second border strips is located within the seal.

[0011] In some embodiments, the sealant is double-sided adhesive.

[0012] In some embodiments, the material of the border strip is foam or MPP.

[0013] A thermal insulation assembly includes a thermal insulation pad and a frame structure as described above, wherein the thermal insulation pad is disposed in a receiving cavity of a frame member of the frame structure.

[0014] In some embodiments, a mounting connector is further included, which is disposed on one side of the frame member and the heat insulation pad to connect the frame member and the heat insulation pad.

[0015] In some embodiments, the mounting connector has adhesive on both the side facing the frame member and the side away from the frame member.

[0016] The battery module includes the frame structure as described above or the heat insulation component as described above.

[0017] The battery pack includes the frame structure described above, the heat insulation component described above, or the battery module described above.

[0018] The vehicle includes the frame structure described above, the heat insulation component described above, the battery module described above, or the battery pack described above.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a frame structure in which multiple frame strips are spliced ​​together to form a frame component. A sealing element is provided at least at the bottom of the splice joint of adjacent frame strips to seal the gaps at the joints. This design eliminates the need for developing die-cutting molds to process the frame strips, reducing manufacturing costs. Since multiple frame strips are spliced ​​together to form the frame component, only the frame strips need to be cut, improving material utilization. Furthermore, the sealing element at the splice joints of adjacent frame strips prevents thermally conductive adhesive from seeping into the gaps, solving the problem of adhesive overflow and ensuring battery cell performance.

[0021] The present invention provides a heat insulation component, including a heat insulation pad and a frame structure as described above, which can solve the problem of glue overflow, ensure the performance of the battery cell, improve the utilization rate of materials, and reduce manufacturing costs.

[0022] The battery module provided by this utility model includes the frame structure or the heat insulation component described above, which can solve the problem of glue overflow, ensure the performance of the battery cell, improve the utilization rate of materials, and reduce manufacturing costs.

[0023] The battery pack provided by this utility model includes the frame structure, the heat insulation component, or the battery module as described above. It can solve the problem of glue overflow, ensure the performance of the battery cells, improve the utilization rate of materials, and reduce manufacturing costs.

[0024] The vehicle provided by this utility model includes the frame structure, the heat insulation component, the battery module, or the battery pack as described above. It can solve the problem of glue overflow, ensure the performance of the battery cells, improve the utilization rate of materials, and reduce manufacturing costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a frame component in a frame structure according to this utility model;

[0027] Figure 2 This is another schematic diagram of the frame component in a frame structure of this utility model;

[0028] Figure 3 This is a schematic diagram of a heat insulation component according to the present invention;

[0029] Figure 4 This is a cross-sectional view of a heat insulation component according to this utility model;

[0030] Figure 5 This is a schematic diagram of a battery module according to the present invention.

[0031] In the picture:

[0032] 100. Battery cell; 1. Frame component; 11. First frame strip; 12. Second frame strip; 13. Receiving cavity; 2. Heat insulation pad; 3. Sealing component; 4. Mounting connector. Detailed Implementation

[0033] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0034] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] In this utility model, the terms "connection," "combination," and "installation" can refer to direct connection, combination, or installation, or indirect connection, combination, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary.

[0036] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0037] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct orientation but can also be understood as the lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0038] A heat insulation pad is placed between the battery cells of the power battery. The heat insulation pad is connected to the frame strip. In order to solve the problem of glue overflow in the gaps between the frame strips, while ensuring the performance of the battery cells, it can also improve the utilization rate of materials and reduce manufacturing costs. Figures 1-2As shown, this utility model provides a frame structure. The frame structure includes multiple frame strips and a sealing element 3.

[0039] Multiple frame strips are spliced ​​together to form a frame member 1, and the frame member 1 has a receiving cavity 13 for placing the heat insulation pad 2. A sealing member 3 is provided at least at the bottom splice of adjacent frame strips to seal the gap at the splice.

[0040] With the above setup, the frame strips can be processed without developing a die, reducing manufacturing costs. Since multiple frame strips are spliced ​​together to form frame component 1, only the frame strips need to be cut, which improves material utilization. Furthermore, a sealing element 3 is installed at the bottom splice of adjacent frame strips to seal the gap at the splice. Since the bottom splice is close to the bottom cold plate, sealing the gap at this splice prevents the thermally conductive structural adhesive from seeping in from the gap, solving the problem of adhesive overflow and ensuring the performance of the battery cell 100.

[0041] In some embodiments, the plurality of border strips includes two first border strips 11 and two second border strips 12. The two first border strips 11 are spaced apart along a first direction, and the two second border strips 12 are spaced apart along a second direction, with the two second border strips 12 located between the two first border strips 11. The two first border strips 11 and the two second border strips 12 form a U-shaped border member 1. A sealing member 3 is disposed at the joint between the first border strips 11 and the second border strips 12, wherein the first direction is... Figure 1 The X direction in the middle, the second direction is Figure 1 The Y direction is shown in the figure. Since the battery cell 100 is usually designed as a cuboid, the frame piece 1 is designed as a U-shape, which can well fit the shape of the side of the battery cell 100. By placing the sealing piece 3 at the splice, the gap at the splice of the first frame strip 11 and the second frame strip 12 can be effectively sealed, thus preventing glue overflow. In this embodiment, the frame piece 1 formed by the two first frame strips 11 and the two second frame strips 12 is rectangular, with the first frame strip 11 being the long side and the second frame strip 12 being the short side. When the battery cell 100 is square, the frame piece 1 formed by the two first frame strips 11 and the two second frame strips 12 can also be designed as square, without much restriction. In other embodiments, the two first frame strips 11 can also be arranged between the two second frame strips 12, and the gap at the splice can be sealed by the sealing piece 3. Alternatively, the first frame strip 11 and the second frame strip 12 can be designed as an integrated structure to form an L-shape, which facilitates assembly while reducing the number of gaps at the joints and reducing the use of the seal 3.

[0042] In some embodiments, the sealant 3 is disposed on the first frame strip 11 and covers the joint between the first frame strip 11 and the second frame strip 12. This arrangement ensures a stable connection between the sealant 3 and the first frame strip 11, and effectively seals the joint, preventing the inflow of thermally conductive structural adhesive. In other embodiments, the sealant 3 may also be disposed on the second frame strip 12 and cover the joint between the first frame strip 11 and the second frame strip 12.

[0043] In some embodiments, the seal 3 is U-shaped, and the joint between the first frame strip 11 and the second frame strip 12 is located within the seal 3. This arrangement ensures that the seal 3 effectively covers both sides of the joint between the first frame strip 11 and the second frame strip 12, thereby further improving the sealing effect at the joint.

[0044] In some embodiments, the sealing element 3 is double-sided adhesive. By using double-sided adhesive, on the one hand, the joints between the frame strips can be connected, allowing adjacent frame strips to adhere and seal the gaps; on the other hand, it facilitates subsequent bonding of the frame strips to the side of the battery cell 100, thus simplifying installation. In other embodiments, the sealing element 3 can also be a single-sided adhesive tape, which is adhered to adjacent frame strips and covers the joint, similarly sealing the gaps at the joints. In still other embodiments, adhesive can be directly applied to the joints of adjacent frame strips, bonding the adjacent frame strips together while simultaneously sealing the gaps at the joints.

[0045] In some embodiments, the frame strip is made of foam or MPP. Foam has excellent cushioning and shock absorption properties, effectively absorbing and dispersing energy when the battery is subjected to external impacts or vibrations, protecting the internal structure of the battery module from damage and extending its lifespan. Furthermore, foam materials typically have low thermal conductivity, effectively isolating heat between the battery cells 100, preventing heat conduction to the outside, keeping the battery cells 100 within a suitable operating temperature range, and improving the efficiency and safety of the battery cells 100. MPP, as a polypropylene microporous foaming material, is an innovative material made from polypropylene using a supercritical foaming process. It features lightweight and environmentally friendly characteristics, a temperature resistance range of -40℃ to 120℃, a thermal conductivity ≤0.035W / (m・K), a compressive stress ≤0.5MPa at 10% strain, zero VOC emissions during production, and is recyclable. The frame strips are arranged between the battery cells 100, exhibiting outstanding thermal stability, heat insulation performance, and energy absorption characteristics. They show no aging even after long-term use at 100℃, outperforming traditional EVA and polyurethane. Their thermal conductivity is lower than polyurethane foam, effectively blocking heat transfer between the battery cells 100. Furthermore, they possess superior compressive stress performance, absorbing the expansion force of the battery cells 100 and reducing the transmission of mechanical vibration. In use, the frame strips can be entirely made of foam or MPP, or a combination of foam and MPP can be employed. Using different materials to manufacture the frame component 1 allows for compatibility with structural strength and assembly requirements.

[0046] like Figures 3-4As shown, this embodiment also provides a heat insulation component, which includes a heat insulation pad 2 and the frame structure described above. The heat insulation pad 2 is disposed in the receiving cavity 13 of the frame component 1 of the frame structure. By adopting the frame structure described above, the frame strips can be processed without developing a die, reducing manufacturing costs. Since the frame component 1 is formed by splicing multiple frame strips, only the frame strips need to be cut, which can improve the utilization rate of materials. Moreover, a sealing element 3 is provided at the splicing point of adjacent frame strips to seal the gap at the splicing point, thereby preventing the thermally conductive structural adhesive from seeping into the gap, solving the problem of adhesive overflow, and ensuring the performance of the battery cell 100. The heat insulation pad 2 plays a role in blocking the propagation of thermal runaway between the battery cells 100. By suppressing the heat conduction between the battery cells 100, it prevents the thermal runaway of a single battery cell 100 from causing a chain reaction, reducing the risk of battery module fire or explosion, and can also improve structural stability: absorbing the expansion and contraction stress during the charging and discharging process of the battery cells 100, compensating for dimensional tolerances, reducing mechanical damage, and extending the service life of the battery module. The heat insulation pad 2 can be made of organic polymer materials, such as silicone foam and fluororubber pads. These materials have good elasticity, resistance to electrolyte (carbonate) corrosion, and long-term temperature resistance. Alternatively, it can be made of inorganic composite materials, such as ceramic fiber pads and mica pads. These materials have extremely high temperature resistance, extremely low thermal conductivity, and high insulation strength. Aerogel composite materials, such as aerogel felt (substrate: glass fiber / ceramic fiber), can also be used. These materials have low thermal conductivity, are lightweight, and have a wide temperature range. Specifically, the choice depends on the type of battery cell 100; therefore, no further restrictions are placed on the material of the heat insulation pad 2.

[0047] In some embodiments, the heat insulation assembly further includes a mounting connector 4, which is disposed on one side of the frame member 1 and the heat insulation pad 2 to connect the frame member 1 and the heat insulation pad 2. By providing the mounting connector 4, the frame member 1 and the heat insulation pad 2 can be connected to form an integral structure, which facilitates subsequent installation between the battery cells 100 and makes it easier to automate the assembly.

[0048] In some embodiments, the mounting connector 4 has adhesive on both the side facing the frame member 1 and the side facing away from the frame member 1. This arrangement facilitates the bonding of the frame member 1 and the heat insulation pad 2 together using the mounting connector 4, and also facilitates the bonding of the integrated heat insulation assembly to the side of the battery cell 100. Optionally, double-sided adhesive can be used directly for the mounting connector 4. During the installation of the mounting connector 4, a hot-pressing process can be used to connect the mounting connector 4 to the frame member 1. In other embodiments, the frame member 1 and the heat insulation pad 2 can be bonded together first using the mounting connector 4, and then the sealing member 3 can be used to seal the gap at the joint of the frame strips. Alternatively, the mounting connector 4 and the sealing member 3 can be arranged separately without interference; no further restrictions are imposed here.

[0049] like Figure 5 As shown, this embodiment also provides a battery module, which includes the above-mentioned frame structure or the above-mentioned heat insulation component, which can solve the problem of glue overflow, ensure the performance of the battery cell, improve the utilization rate of materials, and reduce manufacturing costs.

[0050] This embodiment also provides a battery pack, which includes the above-mentioned frame structure, the above-mentioned heat insulation component or the above-mentioned battery module, which can solve the problem of glue overflow, ensure the performance of the battery cell, improve the utilization rate of materials and reduce manufacturing costs.

[0051] This embodiment also provides a vehicle, which includes the above-mentioned frame structure, the above-mentioned heat insulation component, the above-mentioned battery module or the above-mentioned battery pack, which can solve the problem of glue overflow, ensure the performance of the battery cell, improve the utilization rate of materials, and reduce manufacturing costs.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A border structure, characterized in that, include: Multiple border strips are spliced ​​together to form a border piece (1), and the border piece (1) has a receiving cavity (13) for placing the heat insulation pad (2); A sealing element (3) is provided at least at the bottom of the splice of adjacent frame strips to seal the gap at the splice.

2. The frame structure according to claim 1, characterized in that, The plurality of said border strips include two first border strips (11) and two second border strips (12), the two first border strips (11) are spaced apart along a first direction, the two second border strips (12) are spaced apart along a second direction, and the two second border strips (12) are located between the two first border strips (11), the two first border strips (11) and the two second border strips (12) surround to form a U-shaped border member (1), and the sealing member (3) is disposed at the splice of the first border strip (11) and the second border strip (12).

3. The frame structure according to claim 2, characterized in that, The sealing element (3) is U-shaped, and the joint between the first side strip (11) and the second side strip (12) is located in the sealing element (3).

4. The frame structure according to any one of claims 1-3, characterized in that, The sealing element (3) is double-sided adhesive.

5. The frame structure according to any one of claims 1-3, characterized in that, The material of the border strip is foam or MPP.

6. A thermal insulation component, characterized in that, Includes a heat insulation pad (2) and a frame structure as described in any one of claims 1-5, wherein the heat insulation pad (2) is disposed in a receiving cavity (13) of the frame member (1) of the frame structure.

7. The thermal insulation component according to claim 6, characterized in that, It also includes a mounting connector (4), which is disposed on one side of the frame member (1) and the heat insulation pad (2) to connect the frame member (1) and the heat insulation pad (2).

8. The thermal insulation component according to claim 7, characterized in that, The mounting connector (4) has adhesive on both the side facing the frame member (1) and the side away from the frame member (1).

9. A battery module, characterized in that, Includes the frame structure as described in any one of claims 1-5 or the thermal insulation component as described in any one of claims 6-8.

10. A battery pack, characterized in that, It includes the frame structure as described in any one of claims 1-5, the heat insulation component as described in any one of claims 6-8, or the battery module as described in claim 9.

11. A vehicle, characterized in that, It includes the frame structure as described in any one of claims 1-5, the heat insulation component as described in any one of claims 6-8, the battery module as described in claim 9, or the battery pack as described in claim 10.

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