Thermal insulation sheet, battery module, and battery pack

Abstract

The application relates to the technical field of battery heat insulation components, and discloses a heat insulation sheet, a battery module and a battery pack, which comprise a sheet body, the sheet body comprises a first bonding part, a second bonding part, a heat insulation sheet and a supporting and buffering piece, the second bonding part is arranged opposite to the first bonding part, and the heat insulation sheet and the supporting and buffering piece are both arranged between the first bonding part and the second bonding part; wherein the first bonding part is connected with at least part of the surface of the heat insulation sheet, the first bonding part is connected with at least part of the surface of the supporting and buffering piece, and the second bonding part is connected with at least one of at least part of the surface of the heat insulation sheet and / or at least part of the surface of the supporting and buffering piece, so as to solve or improve the problems that the heat insulation sheet production process is complex and the cost is high.

Description

Technical Field

[0001] This application relates to the field of battery heat insulation components, specifically to heat insulation sheets, battery modules, and battery packs. Background Technology

[0002] In related technologies, new energy vehicles or energy storage systems are equipped with battery packs or battery modules. In the battery packs or battery modules, heat insulation sheets are installed between the cells. When the cells experience thermal runaway or even combustion, the heat insulation sheets can effectively block the heat, thereby delaying the spread of the fire.

[0003] However, the heat insulation sheet needs to be vacuum-sealed before it can be connected to the battery cell, which is a complex and costly manufacturing process. Utility Model Content

[0004] This application provides a heat insulation sheet, a battery module, and a battery pack to solve or improve the problems of complex manufacturing processes and high costs associated with heat insulation sheets.

[0005] In a first aspect, this application provides a heat insulation sheet, including a sheet body. The sheet body includes a first adhesive portion, a second adhesive portion, a heat insulation sheet, and a support and cushioning member. The second adhesive portion is disposed opposite to the first adhesive portion, and the heat insulation sheet and the support and cushioning member are both disposed between the first adhesive portion and the second adhesive portion. The first adhesive portion is connected to at least a portion of the surface of the heat insulation sheet, and the first adhesive portion is connected to at least a portion of the surface of the support and cushioning member to connect the heat insulation sheet and the support and cushioning member. The second adhesive portion is connected to at least a portion of the surface of the heat insulation sheet and / or at least a portion of the surface of the support and cushioning member.

[0006] Beneficial effects: By using heat insulation sheet and support buffer between the first adhesive part and the second adhesive part, both the heat insulation sheet and the support buffer are connected to the first adhesive part, and the heat insulation sheet and / or support buffer are connected to the second adhesive part. Vacuum sealing is not required, which simplifies the production process of the heat insulation sheet and reduces production costs.

[0007] In one alternative embodiment, the support buffer is annular, and the heat insulation sheet is located inside the support buffer.

[0008] In one alternative embodiment, the first adhesive portion covers the thermal insulation sheet and the support cushion, and the second adhesive portion covers the thermal insulation sheet and the support cushion.

[0009] In one alternative embodiment, the heat insulation sheet is square, and the support buffer is disposed on at least one side of the heat insulation sheet; and / or, the support buffer is strip-shaped, L-shaped, or U-shaped; and / or, there are multiple support buffers.

[0010] In one alternative embodiment, the edge of the support buffer is abutted against the edge of the thermal insulation sheet, or the support buffer and the thermal insulation sheet at least partially overlap.

[0011] In one optional embodiment, both the first adhesive portion and the second adhesive portion are any one of double-sided adhesive sheet, single-sided adhesive sheet, silicone sheet, and epoxy adhesive film.

[0012] In one alternative embodiment, the support buffer includes a plurality of connected second insulation layers; and / or, the insulation sheet includes a plurality of connected first insulation layers.

[0013] In one alternative embodiment, the edge of the first adhesive portion is sealed to the edge of the second adhesive portion to form a sealed space, and the heat insulation sheet and the support buffer are located within the sealed space.

[0014] Secondly, this application also provides a battery module, including multiple battery cells and a heat insulation sheet as described in any of the embodiments of the first aspect, wherein at least one set of adjacent battery cells are provided with a heat insulation sheet.

[0015] Beneficial effects: Since the battery pack includes a heat insulation sheet, and the technical effects are the same as those of the heat insulation sheet, they will not be elaborated here.

[0016] Thirdly, a battery pack is provided, including the heat insulation sheet in any embodiment of the first aspect, or the battery module in the second aspect.

[0017] Beneficial effects: Since the battery pack includes heat insulation sheets or battery modules, the technical effects are the same as those of heat insulation sheets or battery modules, so they will not be elaborated here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an axonometric view of a heat insulation sheet according to an embodiment of this application; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is an axonometric view of the heat insulation sheet and supporting buffer in a heat insulation sheet according to an embodiment of this application. Figure 4This is a front view of another heat insulation sheet according to an embodiment of this application; Figure 5 for Figure 3 Sectional view at point BB; Figure 6 for Figure 5 A magnified view of a section at point C; Figure 7 This is an axial view of the heat insulation sheet and supporting buffer in another embodiment of the present application; Figure 8 This is an exploded view of a battery module according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 100. Heat insulation sheet; 200. Battery cell; 300. Steel strip; 1. First adhesive part; 2. Second adhesive part; 3. Thermal insulation sheet; 4. Supporting cushioning component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] In related technologies, new energy vehicles or energy storage systems are equipped with battery packs or battery modules. In the battery packs or battery modules, heat insulation sheets are installed between the cells. When the cells experience thermal runaway or even combustion, the heat insulation sheets can effectively block the heat, thereby delaying the spread of the fire.

[0024] However, the heat insulation sheet needs to be vacuum-sealed before it can be connected to the battery cell, which is a complex and costly manufacturing process.

[0025] Therefore, this application provides a heat insulation sheet, a battery module, and a battery pack to solve or improve the problem of complex and costly heat insulation sheet manufacturing processes.

[0026] The following is combined with Figures 1 to 8 This describes an embodiment of the present application.

[0027] According to embodiments of this application, in a first aspect, a heat insulation sheet 100 is provided, such as... Figures 1 to 3As shown, it includes a sheet body, which includes a first adhesive part 1, a second adhesive part 2, a heat insulation sheet 3, and a support and buffer member 4; the specific scheme is as follows.

[0028] The first adhesive part 1 is an adhesive layer with two-sided adhesive function. Specifically, the first adhesive part 1 is double-sided adhesive or simply a layer of glue.

[0029] The second adhesive part 2 is disposed opposite to the first adhesive part 1. The second adhesive part 2 is an adhesive layer with two-sided adhesive function. Specifically, the first adhesive part 1 is double-sided adhesive or simply a layer of glue.

[0030] The heat insulation sheet 3 is a composite material of any one or at least two of the following materials with a thermal conductivity of <0.07W / (m·K): aerogel, nano heat insulation material, ceramic fiber paper, ceramicized silicone foam, mica sheet, silicone foam, etc.; the support and buffer 4 can be a composite material of any one or at least two of the following materials: ceramic fiber paper, silicone, silicone foam, ceramicized silicone foam, and various other foams.

[0031] like Figures 1 to 3 As shown, the heat insulation sheet 3 and the support buffer 4 are both disposed between the first adhesive portion 1 and the second adhesive portion 2; wherein, the first adhesive portion 1 is connected to at least a portion of the surface of the heat insulation sheet 3, the first adhesive portion 1 is connected to at least a portion of the surface of the support buffer 4 to connect the heat insulation sheet 3 and the support buffer 4, and the second adhesive portion 2 is connected to at least a portion of the surface of the heat insulation sheet 3 and / or at least a portion of the surface of the support buffer 4.

[0032] Specifically, the first adhesive part 1 is connected to both the heat insulation sheet 3 and the support buffer 4. Furthermore, the first adhesive part 1 can be connected to a portion or all of the large surface of the heat insulation sheet 3 near the first adhesive part 1, and the first adhesive part 1 can be connected to a portion or all of the large surface of the support buffer 4 near the first adhesive part 1. That is, the first adhesive part 1 realizes the connection between the heat insulation sheet 3 and the support buffer 4, and can also realize the connection with the battery cell 200.

[0033] The second adhesive part 2 is connected to either the heat insulation sheet 3 or the support buffer 4. Since the heat insulation sheet 3 and the support buffer 4 have already been connected by the first adhesive part 1, the second adhesive part 2 only needs to be connected to either the heat insulation sheet 3 or the support buffer 4 before being connected to the battery cell 200.

[0034] Furthermore, the second adhesive portion 2 can be connected to a portion or all of the large surface of the heat insulation sheet 3 near the second adhesive portion 2, and the second adhesive portion 2 can be connected to a portion or all of the large surface of the support buffer 4 near the second adhesive portion 2.

[0035] It should be noted that if the first adhesive part 1 is a layer of glue, the heat insulation sheet 3 and the support buffer 4 can be connected as one piece first.

[0036] In the specific manufacturing process of the heat insulation sheet 100, it is only necessary to connect the heat insulation sheet 3 to the support buffer 4 through the first adhesive part 1, and then connect the second adhesive part 2 to at least one of the heat insulation sheet 3 and the support buffer 4. There is no need to perform vacuum sealing or other processes.

[0037] In this embodiment, such as Figures 1 to 3 As shown, the heat insulation sheet 3 and the support buffer 4 are located between the first adhesive part 1 and the second adhesive part 2. Both the heat insulation sheet 3 and the support buffer 4 are connected to the first adhesive part 1, and the heat insulation sheet 3 and / or the support buffer 4 are connected to the second adhesive part 2. Vacuum sealing is not required, which simplifies the production process of the heat insulation sheet 100 and reduces the production cost.

[0038] In one embodiment, such as Figures 4 to 7 As shown, the support buffer 4 is ring-shaped, and the heat insulation sheet 3 is located inside the support buffer 4. Specifically, the support buffer 4 can be square ring, circular ring, or other irregular ring shapes. Preferably, the support buffer 4 is square ring-shaped.

[0039] In this embodiment, the ring-shaped support buffer 4 can improve the uniformity of force between adjacent cells 200.

[0040] In a specific embodiment, such as Figures 4 to 7 As shown, the first adhesive part 1 covers the heat insulation sheet 3 and the support buffer 4, and the second adhesive part 2 covers the heat insulation sheet 3 and the support buffer 4, so that the first adhesive part 1, the annular support buffer 4 and the second adhesive part 2 form a sealed accommodating space, and the heat insulation sheet 3 is located in the accommodating space.

[0041] Preferably, the supporting buffer 4 is made of a material that does not shed lint.

[0042] In this embodiment, such as Figures 4 to 7 As shown, the heat insulation sheet 3 is located inside the support buffer 4. The first adhesive part 1 and the second adhesive part 2 are connected to the support buffer 4, so that the heat insulation sheet 3 is located in the accommodating space formed by the first adhesive part 1, the annular support buffer 4 and the second adhesive part 2. This can prevent the heat insulation sheet 3 from contacting the outside world, prevent the residue and falling objects of the heat insulation sheet 3 from contacting the battery cell 200, keep the inside of the battery module or battery pack clean and tidy, and improve the safety of the battery pack or battery module.

[0043] In one embodiment, the heat insulation sheet 3 is square, and the supporting buffer 4 is disposed on at least one side of the heat insulation sheet 3; the supporting buffer 4 is strip-shaped (e.g., Figures 1 to 2(As shown) or L-shaped or U-shaped; there are multiple support buffers 4.

[0044] In specific usage, such as Figure 1 and Figure 2 As shown, taking the support buffer 4 as a strip as an example, if there is only one support buffer 4, the support buffer 4 can be set at any one side of the heat insulation sheet 3. If there are two support buffer 4, the support buffer 4 can be set at any two edges of the heat insulation sheet 3. If there are multiple support buffer 4, the support buffer 4 can be arranged at intervals along a certain direction, wherein the support buffer 4 can overlap with the heat insulation sheet 3.

[0045] If the support buffer 4 is L-shaped, and there are two support buffers 4, the two support buffers 4 can be combined to form a ring shape.

[0046] If the support buffer 4 is U-shaped, and there are two support buffers 4, the two support buffers 4 can be combined to form a ring shape.

[0047] In this embodiment, the support buffer 4 can be any of the following shapes: strip, L-shape, or U-shape, allowing for arbitrary combinations of the support buffer 4 and making it suitable for various situations.

[0048] In one embodiment, the first adhesive part 1 and the second adhesive part 2 are any one of double-sided adhesive sheet, single-sided adhesive sheet, silicone sheet and epoxy adhesive film. Specifically, the heat insulation sheet 100 is a double-sided adhesive sheet. Before use, release paper is provided on the surfaces of the first adhesive part 1 and the second adhesive part 2 that are used to bond with the battery cell 200.

[0049] In one embodiment, such as Figure 2 As shown, the edge of the support buffer 4 is connected to the edge of the heat insulation sheet 3, that is, the edge of the support buffer 4 is connected to the edge of the heat insulation sheet 3.

[0050] Alternatively, the support buffer 4 and the heat insulation sheet 3 may be partially overlapped, that is, the support buffer 4 and the heat insulation sheet 3 may partially overlap, or the support buffer 4 and the heat insulation sheet 3 may be completely overlapped. In one embodiment, the insulation sheet 3 includes multiple connected first insulation layers, and the support cushion 4 includes multiple connected second insulation layers.

[0051] Specifically, the first insulation layer is any one of the following materials with a thermal conductivity of <0.07W / (m·K): aerogel, nano-insulation material, ceramic fiber paper, ceramicized silicone foam, mica sheet, silicone foam, etc.; the second insulation layer is any one of the following: ceramic fiber paper, silicone, silicone foam, ceramicized silicone foam, and other types of foam.

[0052] In practical applications, different types of battery cells 200, such as those with different heat outputs, can be used. Multiple first insulation layers of different materials can be used to form insulation sheets 3, and multiple second insulation layers of different materials can be used to form support buffers 4. These can be combined to suit different types of battery cells 200 and improve insulation performance.

[0053] In this embodiment, the heat insulation sheet 3 includes multiple connected first heat insulation layers, and the support buffer 4 includes multiple connected second heat insulation layers, which can improve the heat insulation performance of the heat insulation sheet.

[0054] In one embodiment (not shown in the figure), the edge of the first adhesive portion 1 is sealed to the edge of the second adhesive portion 2 to form a sealed space, and the heat insulation sheet 3 and the support buffer 4 are located in the sealed space. Specifically, the edge of the first adhesive portion 1 and the edge of the second adhesive portion 2 can be bonded with adhesive.

[0055] It should be noted that the first adhesive part 1 and the second adhesive part 2 are both connected to the heat insulation sheet 3 and the support buffer 4.

[0056] In this embodiment, the edge of the first adhesive part 1 is sealed to the edge of the second adhesive part 2, which can fully wrap the heat insulation sheet 3 and the support buffer 4, and can prevent the residue of the heat insulation sheet 3 and the support buffer 4 from contaminating the battery pack.

[0057] In one embodiment, a heat insulation sheet 100 is provided, such as Figures 1 to 3 As shown, it includes a sheet body, which includes a first adhesive part 1, a second adhesive part 2, a heat insulation sheet 3, and a support and buffer member 4; the specific scheme is as follows.

[0058] The first adhesive part 1 is an adhesive layer with two-sided adhesive function. Specifically, the first adhesive part 1 is double-sided adhesive or simply a layer of glue.

[0059] The second adhesive part 2 is disposed opposite to the first adhesive part 1. The second adhesive part 2 is an adhesive layer with two-sided adhesive function. Specifically, the first adhesive part 1 is double-sided adhesive or simply a layer of glue.

[0060] The heat insulation sheet 3 is a composite material of any one or at least two of the following materials with a thermal conductivity of <0.07W / (m·K): aerogel, nano heat insulation material, ceramic fiber paper, ceramicized silicone foam, mica sheet, silicone foam, etc.; the support and buffer 4 can be a composite material of any one or at least two of the following materials: ceramic fiber paper, silicone, silicone foam, ceramicized silicone foam, and various other foams.

[0061] like Figures 1 to 3As shown, the heat insulation sheet 3 and the support buffer 4 are both disposed between the first adhesive portion 1 and the second adhesive portion 2; wherein, the first adhesive portion 1 is connected to at least a portion of the surface of the heat insulation sheet 3, the first adhesive portion 1 is connected to at least a portion of the surface of the support buffer 4 to connect the heat insulation sheet 3 and the support buffer 4, and the second adhesive portion 2 is connected to at least one of the at least a portion of the surface of the heat insulation sheet 3 and / or the at least a portion of the surface of the support buffer 4.

[0062] Specifically, the first adhesive part 1 is connected to both the heat insulation sheet 3 and the support buffer 4. Furthermore, the first adhesive part 1 can be connected to a portion or all of the large surface of the heat insulation sheet 3 near the first adhesive part 1, and the first adhesive part 1 can be connected to a portion or all of the large surface of the support buffer 4 near the first adhesive part 1. That is, the first adhesive part 1 realizes the connection between the heat insulation sheet 3 and the support buffer 4, and can also realize the connection with the battery cell 200.

[0063] The second adhesive part 2 is connected to either the heat insulation sheet 3 or the support buffer 4. Since the heat insulation sheet 3 and the support buffer 4 have already been connected by the first adhesive part 1, the second adhesive part 2 only needs to be connected to either the heat insulation sheet 3 or the support buffer 4 before being connected to the battery cell 200.

[0064] Furthermore, the second adhesive portion 2 can be connected to a portion or all of the large surface of the heat insulation sheet 3 near the second adhesive portion 2, and the second adhesive portion 2 can be connected to a portion or all of the large surface of the support buffer 4 near the second adhesive portion 2.

[0065] It should be noted that if the first adhesive part 1 is a layer of glue, the heat insulation sheet 3 and the support buffer 4 can be connected as one piece first.

[0066] More specifically, such as Figures 4 to 7 As shown, the support buffer 4 is ring-shaped, and the heat insulation sheet 3 is located inside the support buffer 4. Specifically, the support buffer 4 can be square ring, circular ring, or other irregular ring shapes. Preferably, the support buffer 4 is square ring-shaped.

[0067] More specifically, such as Figures 4 to 7 As shown, the first adhesive part 1 covers the heat insulation sheet 3 and the support buffer 4, and the second adhesive part 2 covers the heat insulation sheet 3 and the support buffer 4, so that the first adhesive part 1, the annular support buffer 4 and the second adhesive part 2 form a sealed accommodating space, and the heat insulation sheet 3 is located in the accommodating space.

[0068] Preferably, the supporting buffer 4 is made of a material that does not shed lint.

[0069] Of course, the insulation sheet 3 is square, and the supporting buffer 4 is provided on at least one side of the insulation sheet 3; the supporting buffer 4 is strip-shaped (e.g., Figures 1 to 2 (As shown) or L-shaped or U-shaped; there are multiple support buffers 4.

[0070] Taking the support buffer 4 as a strip as an example, if there is only one support buffer 4, the support buffer 4 can be set at any side of the heat insulation sheet 3. If there are two support buffer 4, the support buffer 4 can be set at any two edges of the heat insulation sheet 3. If there are multiple support buffer 4, the support buffer 4 can be arranged at intervals along a certain direction, and the support buffer 4 can overlap with the heat insulation sheet 3.

[0071] If the support buffer 4 is L-shaped, and there are two support buffers 4, the two support buffers 4 can be combined to form a ring shape.

[0072] If the support buffer 4 is U-shaped, and there are two support buffers 4, the two support buffers 4 can be combined to form a ring shape.

[0073] More specifically, the first adhesive part 1 and the second adhesive part 2 are any one of double-sided adhesive sheet, single-sided adhesive sheet, silicone sheet and epoxy adhesive film. Specifically, the heat insulation sheet 100 is a double-sided adhesive sheet. Before use, release paper is provided on the surfaces of the first adhesive part 1 and the second adhesive part 2 used to bond with the battery cell 200.

[0074] More specifically, such as Figure 2 As shown, the edge of the support buffer 4 is aligned with the edge of the heat insulation sheet 3, that is, the edge of the support buffer 4 is aligned with the edge of the heat insulation sheet 3. Alternatively, the support buffer 4 and the heat insulation sheet 3 may at least partially overlap, that is, the support buffer 4 and the heat insulation sheet 3 may partially overlap, or the support buffer 4 and the heat insulation sheet 3 may completely overlap. More specifically, the insulation sheet 3 includes multiple connected first insulation layers, and the support buffer 4 includes multiple connected second insulation layers.

[0075] Specifically, the first insulation layer is any one of the following materials with a thermal conductivity of <0.07W / (m·K): aerogel, nano-insulation material, ceramic fiber paper, ceramicized silicone foam, mica sheet, silicone foam, etc.; the second insulation layer is any one of the following: ceramic fiber paper, silicone, silicone foam, ceramicized silicone foam, and other types of foam.

[0076] According to embodiments of this application, in a second aspect, such as Figure 8 As shown, a battery module is provided, including a plurality of battery cells 200 and a heat insulation sheet 100 in any embodiment of the first aspect, wherein at least one pair of adjacent battery cells 200 are provided with a heat insulation sheet 100.

[0077] Specifically, the battery module includes multiple battery cells 200, steel strips 300, etc. The multiple battery cells 200 are arranged side by side in a certain direction, and a heat insulation sheet 100 is sandwiched and connected between two adjacent battery cells 200.

[0078] In actual use, after arranging multiple battery cells 200 and multiple heat insulation sheets 100 according to the set scheme, they are squeezed using a specific tooling. The support buffer 4 is deformed under pressure. Then, after the steel strip 300 is put on, the support buffer 4 is reset, so that the battery cells 200 squeeze the steel strip 300, thereby ensuring the integrity of the battery module.

[0079] In this embodiment, since the battery pack includes a heat insulation sheet 100, which has the same technical effect as the heat insulation sheet 100, it will not be described in detail here.

[0080] According to an embodiment of this application, in a third aspect, a battery pack is provided, including the heat insulation sheet 100 in any embodiment of the first aspect, or the battery module in the second aspect.

[0081] In this embodiment, since the battery pack includes a heat insulation sheet 100 or a battery module, which has the same technical effect as the heat insulation sheet 100 or the battery module, it will not be described in detail here.

[0082] According to an embodiment of this application, in a fourth aspect, an electrical device is provided, including a heat insulation sheet 100 in any embodiment of the first aspect, a battery module in the second aspect, or a battery pack in the third aspect.

[0083] Specifically, electrical equipment can include electric bicycles, vehicles, ships, spacecraft, energy storage systems, and electric toys, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; energy storage systems include energy storage containers, energy storage cabinets, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. This application's embodiments do not impose special limitations on the aforementioned electrical equipment.

[0084] In this embodiment, since the electrical equipment includes any one of the heat insulation sheet 100, the battery module, and the battery pack, which has the same technical effect as the heat insulation sheet 100, it will not be described in detail here.

[0085] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A heat insulation sheet, characterized in that, include: The sheet body includes: First adhesive part (1); The second adhesive part (2) is disposed opposite to the first adhesive part (1); The heat insulation sheet (3) and the support buffer (4) are both disposed between the first adhesive part (1) and the second adhesive part (2); Wherein, the first adhesive part (1) is connected to at least a portion of the surface of the heat insulation sheet (3), and the first adhesive part (1) is connected to at least a portion of the surface of the support buffer (4) to connect the heat insulation sheet (3) and the support buffer (4), and the second adhesive part (2) is connected to at least a portion of the surface of the heat insulation sheet (3) and / or at least a portion of the surface of the support buffer (4).

2. The heat insulation sheet according to claim 1, characterized in that, The support buffer (4) is ring-shaped, and the heat insulation sheet (3) is located inside the support buffer (4).

3. The heat insulation sheet according to claim 2, characterized in that, The first adhesive portion (1) covers the heat insulation sheet (3) and the support buffer (4), and the second adhesive portion (2) covers the heat insulation sheet (3) and the support buffer (4).

4. The heat insulation sheet according to claim 1, characterized in that, The heat insulation sheet (3) is square, and the support buffer (4) is disposed on at least one side of the heat insulation sheet (3); And / or, the support buffer (4) is strip-shaped, L-shaped, or U-shaped; And / or, the support buffer (4) may be multiple.

5. The heat insulation sheet according to any one of claims 1 to 4, characterized in that, The edge of the support buffer (4) is aligned with the edge of the heat insulation sheet (3), or the support buffer (4) and the heat insulation sheet (3) are at least partially overlapped.

6. The heat insulation sheet according to any one of claims 1 to 4, characterized in that, The first adhesive part (1) and the second adhesive part (2) are any one of double-sided adhesive sheet, single-sided adhesive sheet, silicone sheet and epoxy adhesive film.

7. The heat insulation sheet according to any one of claims 1 to 4, characterized in that, The support buffer (4) includes multiple connected second insulation layers; And / or, the insulation sheet (3) includes a plurality of connected first insulation layers.

8. The heat insulation sheet according to any one of claims 1 to 4, characterized in that, The edge of the first adhesive part (1) is sealed to the edge of the second adhesive part (2) to form a sealed space, and the heat insulation sheet (3) and the support buffer (4) are located in the sealed space.

9. A battery module, characterized in that, include: Multiple battery cells (200); The heat insulation sheet (100) as described in any one of claims 1 to 8 is provided between at least one set of two adjacent battery cells (200).

10. A battery pack, characterized in that, include: The heat insulation sheet (100) as described in any one of claims 1 to 8, or the battery module as described in claim 9.

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