Insulation thermal baffle, battery module, battery pack and electric equipment

Abstract

The utility model is applicable to the field of batteries, and provides an insulating and heat-insulating plate, a battery module, a battery pack and electric equipment, and the insulating and heat-insulating plate comprises an insulating and heat-resisting sheet; the gum is connected with the insulating heat-resistant sheet, and an accommodating space is defined by the gum and the insulating heat-resistant sheet; the mica tape is arranged in the accommodating space; the gum, the mica tape and the insulating heat-resistant sheet are sequentially distributed along a first direction; in the second direction, the size of the mica tape is consistent with that of the insulating heat-resistant sheet; in the third direction, the size of the mica tape is smaller than that of the insulating heat-resistant sheet; every two of the third direction, the second direction and the first direction are perpendicular to each other. Through the arrangement, the gum and the insulating heat-resistant sheet are bonded to wrap the mica tape between the gum and the insulating heat-resistant sheet, so that the mica tape can be effectively prevented from being layered, the mica tape is prevented from being layered while the mica sheet and the insulating heat-resistant sheet are compounded, the cost can be controlled, and the insulating heat-insulating performance of the insulating heat-insulating plate is effectively ensured.

Description

Technical Field

[0001] This application belongs to the field of battery structure technology, and in particular relates to an insulating heat insulation board, a battery module, a battery pack and an electrical device. Background Technology

[0002] Currently, with rapid economic and technological development, the demand for energy conservation and emission reduction is becoming increasingly urgent, and new energy vehicles are gradually becoming the mainstream of national development and research. The most critical component of new energy vehicles is the power battery, and the safety performance of the power battery is a key focus of the industry. To ensure that the power battery does not catch fire or explode under extreme conditions, high requirements are placed on the insulation and heat protection within the battery pack.

[0003] In the structure of a power battery pack, several cells are connected in series or parallel. When the battery experiences thermal runaway, the explosion-proof valve of the cell will open, releasing heat outward. Therefore, the area corresponding to the explosion-proof valve will be equipped with corresponding insulation and heat insulation protection. For example, silicone rubber, aerogel, etc. are installed in the area corresponding to the explosion-proof valve. When the heat insulation performance is insufficient, the ceramicized silicone rubber needs to be thickened, which will significantly increase the cost.

[0004] To reduce the cost of insulation and heat protection, mica can be added, controlling costs while ensuring heat insulation performance. However, mica is a material that easily delaminates; during use, it tends to separate, resulting in a reduction in insulation and heat insulation performance. Utility Model Content

[0005] This application provides an insulating heat insulation board, which aims to solve the problem that existing insulating heat insulation boards using mica are prone to delamination, which can easily lead to a reduction in insulation and heat insulation performance.

[0006] This application provides an insulating heat insulation board, comprising:

[0007] Insulating heat-resistant sheet;

[0008] The adhesive backing connected to the insulating heat-resistant sheet, and the adhesive backing and the insulating heat-resistant sheet together form an enclosing space; and

[0009] Mica strips set within the containment space;

[0010] Adhesive backing, mica tape, and insulating heat-resistant sheet are distributed sequentially along the first direction;

[0011] In the second direction, the dimensions of the mica tape and the insulating heat-resistant sheet are the same;

[0012] In the third-party upward direction, the size of the mica tape is smaller than the size of the insulating heat-resistant sheet;

[0013] The third direction, the second direction, and the first direction are all perpendicular to each other.

[0014] Furthermore, on a third-party upward direction, the center point of the mica tape coincides with the center point of the insulating heat-resistant sheet.

[0015] Furthermore, in the first direction, the sum of the thicknesses of the adhesive backing, mica tape, and insulating heat-resistant sheet is 0.8 mm to 1.5 mm, and the thickness of the mica tape is 0.3 mm to 1 mm.

[0016] Furthermore, the mica tape includes at least one of natural white mica paper and natural phlogopite paper.

[0017] Furthermore, the adhesive backing is acrylic adhesive.

[0018] Furthermore, the insulating heat-resistant sheet includes a substrate and silicone rubber directly cured on the substrate.

[0019] Furthermore, the substrate is polyethylene terephthalate.

[0020] Secondly, this application also provides a battery module, including:

[0021] Battery cells; and

[0022] As mentioned above, the insulating heat-resistant sheet is placed in the area directly opposite the explosion-proof valve of the battery cell.

[0023] Thirdly, this application also provides a battery pack, including the battery module as described above.

[0024] Fourthly, this application also provides an electrical device, including the battery module as described above, or including the battery pack as described above.

[0025] The beneficial effects of this application are as follows: The insulating and heat-resistant board provided by this application includes an insulating and heat-resistant sheet; an adhesive backing connected to the insulating and heat-resistant sheet, with the adhesive backing and the insulating and heat-resistant sheet forming an enclosing space; and a mica tape disposed in the enclosing space; the adhesive backing, mica tape, and insulating and heat-resistant sheet are distributed sequentially along a first direction; in a second direction, the size of the mica tape is the same as the size of the insulating and heat-resistant sheet; in a third direction, the size of the mica tape is smaller than the size of the insulating and heat-resistant sheet; the third direction, the second direction, and the first direction are perpendicular to each other. Through the above arrangement, the mica tape is wrapped between the adhesive backing and the insulating and heat-resistant sheet by bonding the adhesive backing and the insulating and heat-resistant sheet, which can effectively prevent the mica tape from delaminating. This achieves the composite of the mica sheet and the insulating and heat-resistant sheet while avoiding the delamination of the mica tape, controlling costs and effectively ensuring the insulating and heat-resistant performance of the insulating and heat-resistant board. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the insulating heat insulation board provided in this application;

[0027] Figure 2 yes Figure 1An enlarged schematic diagram of part A in the middle;

[0028] Figure 3 This is a schematic diagram showing the disassembled structure of an embodiment of the insulating and heat-insulating board provided in this application;

[0029] Figure 4 yes Figure 3 Enlarged schematic diagram of part B;

[0030] Figure 5 This is a schematic diagram of another embodiment of the connection between the insulating heat shield and the chip provided in this application;

[0031] Figure 6 yes Figure 5 An enlarged schematic diagram of section C.

[0032] Explanation of reference numerals in the attached drawings: 100-insulating heat-resistant sheet, 110-substrate, 120-silicone rubber, 200-adhesive backing, 300-accommodating space, 400-mica tape, L1-first direction, L2-second direction, L3-third direction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0034] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference values ​​and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] The insulating and heat-resistant board provided in this application includes an insulating and heat-resistant sheet; an adhesive backing connected to the insulating and heat-resistant sheet, with the adhesive backing and the insulating and heat-resistant sheet forming an enclosing space; and a mica tape disposed in the enclosing space; the adhesive backing, mica tape, and insulating and heat-resistant sheet are distributed sequentially along a first direction; in a second direction, the size of the mica tape is the same as the size of the insulating and heat-resistant sheet; in a third direction, the size of the mica tape is smaller than the size of the insulating and heat-resistant sheet; the third direction, the second direction, and the first direction are perpendicular to each other. Through the above arrangement, the adhesive backing and the insulating and heat-resistant sheet are bonded together, wrapping the mica tape between the adhesive backing and the insulating and heat-resistant sheet, effectively preventing delamination of the mica tape. This achieves the composite of the mica sheet and the insulating and heat-resistant sheet while avoiding mica tape delamination, controlling costs and effectively ensuring the insulating and heat-resistant performance of the insulating and heat-resistant board.

[0040] like Figures 1 to 6As shown, one embodiment of this application provides an insulating heat insulation board, comprising:

[0041] Insulating heat-resistant sheet 100;

[0042] The adhesive 200 connected to the insulating heat-resistant sheet 100, and the adhesive 200 and the insulating heat-resistant sheet 100 together form a receiving space 300; and

[0043] A mica strip 400 is installed in the containing space 300;

[0044] Adhesive 200, mica tape 400, and insulating heat-resistant sheet 100 are distributed sequentially along the first direction L1;

[0045] In the second direction L2, the dimensions of the mica tape 400 are the same as those of the insulating heat-resistant sheet 100;

[0046] On the third-party L3, the size of the mica tape 400 is smaller than the size of the insulating heat-resistant sheet 100;

[0047] The third direction L3, the second direction L2, and the first direction L1 are all perpendicular to each other.

[0048] In practice, the insulating heat insulation board provided in this application is used in power batteries. Specifically, the power battery is equipped with an explosion-proof valve. When the power battery malfunctions and causes thermal runaway, the explosion-proof valve will open and release heat to the outside. The insulating heat insulation board is installed at the corresponding position of the explosion-proof valve to provide insulation and heat protection against the heat released to the outside when the explosion-proof valve is opened.

[0049] It should be noted that the application of the insulating heat insulation plate provided in this application to a power battery is an illustrative example of the embodiments of this application, and not a specific limitation of this application. In other embodiments, the insulating heat insulation plate can also be applied to other fields or products, such as applying the insulating heat insulation plate to the insulation and heat insulation protection of lithium batteries, without specific limitation.

[0050] Both the insulating heat-resistant sheet 100 and the mica tape 400 serve the function of insulation and heat resistance. Compared with traditional insulating heat insulation boards that use insulating heat-resistant sheet 100 for all of them, this application can effectively control the cost of insulating heat insulation boards by using low-cost mica tape 400, that is, by replacing part of the insulating heat-resistant sheet 100 with mica tape 400.

[0051] Optionally, the mica tape 400 may be made of at least one of natural white mica paper and natural phlogopite paper, without specific limitation.

[0052] The second direction L2 and the third direction L3 correspond to the length and width directions of the mica strip 400, such as Figure 1 and Figure 5As shown. For example, taking the second direction L2 corresponding to the length direction of the mica tape 400 as an example, in the length direction, the size of the mica tape 400 is the same as the size of the insulating heat-resistant sheet 100, while in the width direction, the size of the mica tape 400 is smaller than the size of the insulating heat-resistant sheet 100. Similarly, when the second direction L2 corresponds to the width direction of the mica tape 400, in the width direction, the size of the mica tape 400 is the same as the size of the insulating heat-resistant sheet 100, while in the length direction, the size of the mica tape 400 is smaller than the size of the insulating heat-resistant sheet 100.

[0053] By adjusting the dimensions of the mica tape 400 and the insulating heat-resistant sheet 100 in both width and length, the amount of mica tape 400 used can be reduced, further controlling costs.

[0054] As one possible implementation, on the third direction L3, the center point of the mica tape 400 coincides with the center point of the insulating heat-resistant sheet 100. That is, the mica tape 400 is located in the middle of the insulating heat-resistant sheet 100, which can better play the role of insulation and heat resistance.

[0055] The adhesive 200 is used to bond with the insulating heat-resistant sheet 100. Optionally, the adhesive 200 is an acrylic adhesive 200, which has durable and high adhesion. The adhesive 200 and the insulating heat-resistant sheet 100 are used to enclose and form a receiving space 300, thereby wrapping the mica tape 400 in the receiving space 300. That is, along the first direction L1, the adhesive 200, the mica tape 400 and the insulating heat-resistant sheet 100 are distributed sequentially. The first direction L1 is the thickness direction of the adhesive 200, the mica tape 400 and the insulating heat-resistant sheet 100. Thus, along the first direction L1, the adhesive 200 and the insulating heat-resistant sheet 100 abut against the two sides of the mica tape 400, which can effectively prevent the mica tape 400 from delaminating, and no additional encapsulation process is required, which ensures performance and saves costs.

[0056] The adhesive backing 200 is sticky and can be attached to designated locations. For example, the insulating heat insulation board can be attached to the corresponding position of the explosion-proof valve, or to the side plate of the battery module, the side beam of the battery tray, or other locations that require insulation and heat protection. The installation is convenient and simple.

[0057] The insulating and heat-resistant board provided in this application includes an insulating and heat-resistant sheet 100; an adhesive backing 200 connected to the insulating and heat-resistant sheet 100, the adhesive backing 200 and the insulating and heat-resistant sheet 100 forming a receiving space 300; and a mica tape 400 disposed in the receiving space 300; the adhesive backing 200, the mica tape 400 and the insulating and heat-resistant sheet 100 are distributed sequentially along a first direction L1; in a second direction L2, the size of the mica tape 400 is the same as the size of the insulating and heat-resistant sheet 100; in a third direction L3, the size of the mica tape 400 is smaller than the size of the insulating and heat-resistant sheet 100; the third direction L3, the second direction L2 and the first direction L1 are perpendicular to each other. With the above setup, the backing adhesive 200 and the insulating heat-resistant sheet 100 are bonded together to wrap the mica tape 400 between the backing adhesive 200 and the insulating heat-resistant sheet 100. This can effectively prevent the mica tape 400 from delaminating, achieving the composite of the mica sheet and the insulating heat-resistant sheet 100 while avoiding the delamination of the mica tape 400. This can control costs and effectively ensure the insulation and heat insulation performance of the insulating heat insulation board.

[0058] In some alternative embodiments, in the first direction L1, the sum of the thicknesses of the adhesive 200, the mica tape 400, and the insulating heat-resistant sheet 100 is 0.8 mm to 1.5 mm. For example, the sum of the thicknesses of the adhesive 200, the mica tape 400, and the insulating heat-resistant sheet 100 is any value among 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 0.8 mm to 1.5 mm, without limitation.

[0059] Optionally, the thickness of the mica tape 400 is 0.3mm to 1mm. For example, the thickness of the mica tape 400 is any value among 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 0.3mm to 1mm, without limitation.

[0060] In some alternative embodiments, the insulating heat-resistant sheet 100 includes a substrate 110 and a silicone rubber 120 directly cured on the substrate 110.

[0061] The substrate 110 is a support carrier for the silicone rubber 120. Generally, the substrate 110 includes, but is not limited to, glass substrate 110, resin substrate 110 or other materials with insulating and heat-resistant properties. For example, taking resin substrate 110 as an example, the substrate 110 is polyethylene terephthalate, which is not limited.

[0062] Silicone rubber 120 refers to a type of rubber whose main chain consists of alternating silicon and oxygen atoms, with two organic groups typically attached to each silicon atom. In the preparation of the insulating and heat-resistant sheet 100, the silicone rubber 120 material can be applied to one side surface of the substrate 110 via spraying or coating, and then cured to form silicone rubber 120.

[0063] In some alternative embodiments, this application also provides a battery module, including:

[0064] Battery cells; and

[0065] As mentioned above, the insulating heat-resistant sheet 100 is installed in the area directly opposite the explosion-proof valve of the battery cell.

[0066] Those skilled in the art will understand that, for the sake of convenience and brevity, the structure and implementation principle of the battery module described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0067] The insulating and heat-resistant board provided in this application includes an insulating and heat-resistant sheet 100; an adhesive backing 200 connected to the insulating and heat-resistant sheet 100, the adhesive backing 200 and the insulating and heat-resistant sheet 100 forming a receiving space 300; and a mica tape 400 disposed in the receiving space 300; the adhesive backing 200, the mica tape 400 and the insulating and heat-resistant sheet 100 are distributed sequentially along a first direction L1; in a second direction L2, the size of the mica tape 400 is the same as the size of the insulating and heat-resistant sheet 100; in a third direction L3, the size of the mica tape 400 is smaller than the size of the insulating and heat-resistant sheet 100; the third direction L3, the second direction L2 and the first direction L1 are perpendicular to each other. With the above setup, the backing adhesive 200 and the insulating heat-resistant sheet 100 are bonded together to wrap the mica tape 400 between the backing adhesive 200 and the insulating heat-resistant sheet 100. This can effectively prevent the mica tape 400 from delaminating, achieving the composite of the mica sheet and the insulating heat-resistant sheet 100 while avoiding the delamination of the mica tape 400. This can control costs and effectively ensure the insulation and heat insulation performance of the insulating heat insulation board.

[0068] In some alternative embodiments, this application also provides a battery pack, including the battery module as described above.

[0069] Those skilled in the art will understand that, for the sake of convenience and brevity, the structure and implementation principle of the battery pack described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0070] The insulating and heat-resistant board provided in this application includes an insulating and heat-resistant sheet 100; an adhesive backing 200 connected to the insulating and heat-resistant sheet 100, the adhesive backing 200 and the insulating and heat-resistant sheet 100 forming a receiving space 300; and a mica tape 400 disposed in the receiving space 300; the adhesive backing 200, the mica tape 400 and the insulating and heat-resistant sheet 100 are distributed sequentially along a first direction L1; in a second direction L2, the size of the mica tape 400 is the same as the size of the insulating and heat-resistant sheet 100; in a third direction L3, the size of the mica tape 400 is smaller than the size of the insulating and heat-resistant sheet 100; the third direction L3, the second direction L2 and the first direction L1 are perpendicular to each other. With the above setup, the backing adhesive 200 and the insulating heat-resistant sheet 100 are bonded together to wrap the mica tape 400 between the backing adhesive 200 and the insulating heat-resistant sheet 100. This can effectively prevent the mica tape 400 from delaminating, achieving the composite of the mica sheet and the insulating heat-resistant sheet 100 while avoiding the delamination of the mica tape 400. This can control costs and effectively ensure the insulation and heat insulation performance of the insulating heat insulation board.

[0071] In some alternative embodiments, this application also provides an electrical device, including a battery module as described above, or a battery pack as described above.

[0072] In practice, electrical equipment includes, but is not limited to, communication equipment, smart devices, power supplies, or related components used in automotive electrical equipment, medical equipment, and household appliances, without specific limitations.

[0073] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the structure and implementation principle of the electrical equipment described above can be referred to the corresponding structure and implementation principle in the foregoing embodiments, and will not be repeated here.

[0074] The insulating and heat-resistant board provided in this application includes an insulating and heat-resistant sheet 100; an adhesive backing 200 connected to the insulating and heat-resistant sheet 100, the adhesive backing 200 and the insulating and heat-resistant sheet 100 forming a receiving space 300; and a mica tape 400 disposed in the receiving space 300; the adhesive backing 200, the mica tape 400 and the insulating and heat-resistant sheet 100 are distributed sequentially along a first direction L1; in a second direction L2, the size of the mica tape 400 is the same as the size of the insulating and heat-resistant sheet 100; in a third direction L3, the size of the mica tape 400 is smaller than the size of the insulating and heat-resistant sheet 100; the third direction L3, the second direction L2 and the first direction L1 are perpendicular to each other. With the above setup, the backing adhesive 200 and the insulating heat-resistant sheet 100 are bonded together to wrap the mica tape 400 between the backing adhesive 200 and the insulating heat-resistant sheet 100. This can effectively prevent the mica tape 400 from delaminating, achieving the composite of the mica sheet and the insulating heat-resistant sheet 100 while avoiding the delamination of the mica tape 400. This can control costs and effectively ensure the insulation and heat insulation performance of the insulating heat insulation board.

[0075] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An insulating heat insulation board, characterized in that, include: Insulating heat-resistant sheet; The adhesive backing connected to the insulating heat-resistant sheet forms an accommodating space between the adhesive backing and the insulating heat-resistant sheet; as well as Mica strips disposed in the containing space; The adhesive backing, the mica tape, and the insulating heat-resistant sheet are distributed sequentially along the first direction; In the second direction, the dimensions of the mica tape and the insulating heat-resistant sheet are the same; In the third direction, the size of the mica tape is smaller than the size of the insulating heat-resistant sheet; The third direction, the second direction, and the first direction are perpendicular to each other.

2. The insulating and heat-insulating board as described in claim 1, characterized in that, In the third direction, the center point of the mica tape coincides with the center point of the insulating heat-resistant sheet.

3. The insulating and heat-insulating board as described in claim 1, characterized in that, In the first direction, the sum of the thicknesses of the adhesive backing, the mica tape, and the insulating heat-resistant sheet is 0.8 mm to 1.5 mm, and the thickness of the mica tape is 0.3 mm to 1 mm.

4. The insulating heat insulation board according to any one of claims 1 to 3, characterized in that, The mica tape includes at least one of natural white mica paper and natural phlogopite paper.

5. The insulating and heat-insulating board as described in claim 1, characterized in that, The adhesive backing is acrylic adhesive.

6. The insulating and heat-insulating board as described in claim 1, characterized in that, The insulating heat-resistant sheet includes a substrate and silicone rubber directly cured on the substrate.

7. The insulating and heat-insulating board as described in claim 6, characterized in that, The substrate is polyethylene terephthalate.

8. A battery module, characterized in that, include: Battery cell; as well as The insulating heat-resistant sheet as described in any one of claims 1 to 7 is disposed in the area directly opposite the explosion-proof valve of the battery cell.

9. A battery pack, characterized in that, Includes the battery module as described in claim 8.

10. An electrical appliance, characterized in that, It includes the battery module as described in claim 8, or the battery pack as described in claim 9.

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