Heat insulation part, battery pack and vehicle
By combining the frame and the heat insulation body, the problem of high cost of heat insulation components is solved, thereby reducing manufacturing costs and improving battery pack safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-04-07
AI Technical Summary
The cost of thermal insulation components in the existing technology is relatively high, mainly because the use of aerogel thermal insulation pads to cover a large area of the battery cell increases the manufacturing cost.
The design combines a frame and a heat insulation layer. The frame makes large-area contact with the battery cell, and the heat insulation layer makes contact with the battery cell when it expands, thus avoiding large-area contact between adjacent battery cells and isolating heat transfer, eliminating the need for traditional aerogel heat insulation pad design.
It effectively reduces the manufacturing cost of heat insulation components, alleviates the economic burden of battery packs, and provides effective thermal isolation when cells expand, preventing the spread of thermal runaway and improving the safety and service life of battery packs.
Smart Images
Figure CN224096786U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a heat insulation component, a battery pack, and a vehicle. Background Technology
[0002] Thermal insulation is an important component used in battery packs. It is usually placed between the large surfaces of adjacent cells to prevent heat conduction between cells, improve the temperature uniformity of multiple cells, and to a certain extent suppress the damage caused by high temperature to the cells, thereby optimizing the energy efficiency of the cells and extending their service life.
[0003] In existing technologies, most heat insulation components use aerogel heat insulation pads, which cover the entire surface of the battery cell, resulting in high costs for heat insulation components and hindering cost control during battery pack manufacturing. Utility Model Content
[0004] In view of this, this application provides a heat insulation component, a battery pack, and a vehicle to at least solve the problem of high cost of heat insulation components in the prior art.
[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:
[0006] This application provides a heat insulation component, including a frame and a heat insulation body; the heat insulation body is disposed in the frame and connected to the frame, a cavity is formed between the heat insulation body and the frame, and the thickness of the heat insulation body is less than the thickness of the frame.
[0007] Optionally, the insulation body includes a contact portion and at least two beams; the at least two beams intersect, and the contact portion is located at the intersection of the at least two beams.
[0008] Optionally, the contact portion is located in the central region of the frame.
[0009] Optionally, the area of the contact portion accounts for 10% to 50% of the area within the frame.
[0010] Optionally, the frame is provided with a liquid inlet hole, which is connected to the cavity.
[0011] Optionally, the frame is further provided with an exhaust hole, which is connected to the cavity.
[0012] Optionally, the frame includes two side frames arranged opposite each other along a first direction and a top frame and a bottom frame arranged opposite each other along a second direction, wherein the first direction intersects the second direction; at least one of the side frames is provided with a liquid inlet hole, and the top frame is provided with a vent hole, wherein the liquid inlet hole and the vent hole are respectively connected to the cavity.
[0013] Optionally, the liquid inlet is located on the side of the side frame near the bottom frame, and the distance between the liquid inlet and the bottom frame is 5mm to 10mm.
[0014] Optionally, the size of the vent along the first direction is not less than 1 mm; and / or, the number of vents is at least two, and the at least two vents are spaced apart on the top frame along the first direction.
[0015] Optionally, the thickness of the frame is T1, and the thickness of the insulation is T2, wherein T1 and T2 satisfy: 20%T1≤T2<T1.
[0016] This application also provides a battery pack including a plurality of battery cells and a heat insulation element as described in any of the preceding claims, the heat insulation element being disposed between two adjacent battery cells, and the surface of the frame abutting against the surface of the battery cells.
[0017] This application also provides a vehicle characterized by including a battery pack as described above.
[0018] Compared to existing technologies, the heat insulation component, battery pack, and vehicle described in this application have the following advantages:
[0019] The heat insulation component of this application eliminates the traditional aerogel heat insulation pad design and instead adopts a combination of a frame and a heat insulation body. The frame can contact the large surface of the battery cell. When the battery cell expands, the large surface of the battery cell will contact the heat insulation body. The heat insulation body can prevent the large surfaces of two adjacent battery cells from contacting each other, thereby playing a role in isolating heat transfer. This significantly reduces the manufacturing cost of the heat insulation component and effectively alleviates the economic burden in the battery pack manufacturing process.
[0020] The battery pack and vehicle of this application have the same or similar advantages as the prior art and the aforementioned heat insulation components, which will not be elaborated here. Attached Figure Description
[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0022] Figure 1 This is a schematic diagram of a heat insulation component according to an embodiment of this application;
[0023] Figure 2 This is a front view of a heat insulation component according to an embodiment of this application;
[0024] Figure 3 This is a schematic diagram of a heat insulation component placed inside a battery pack according to an embodiment of this application;
[0025] Figure 4This is a schematic diagram of another heat insulation component placed inside the battery pack in an embodiment of this application.
[0026] Explanation of reference numerals in the attached figures:
[0027] 01-Insulation component, 02-Battery cell, 1-Frame, 11-Inlet hole, 12-Exhaust hole, 101-Top frame, 102-Bottom frame, 103-Side frame, 2-Insulation body, 21-Beam body, 22-Contact part, 3-Cavity, X-First direction, Y-Second direction. Detailed Implementation
[0028] 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.
[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0030] The terms "comprising," "including," or any other variations thereof used in the specification and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal device 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 terminal device. 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 terminal device that includes said element.
[0031] The following detailed description of a heat insulation component, battery pack, and vehicle provided in this application is illustrated with specific embodiments.
[0032] This application provides a heat insulation component. Figure 1 This is a schematic diagram of a heat insulation component according to an embodiment of this application. Figure 2 This is a front view of a heat insulation component according to an embodiment of this application, with reference to... Figure 1 and Figure 2 The heat insulation component includes a frame 1 and a heat insulation body 2; the heat insulation body 2 is disposed inside the frame 1 and connected to the frame 1, and multiple cavities 3 are formed between the heat insulation body 2 and the frame 1, and the thickness of the heat insulation body 2 is less than the thickness of the frame 1.
[0033] The frame 1 forms the main framework of the heat insulation component. The frame 1 can be made of any one or more materials such as aluminum alloy, steel alloy, magnesium alloy, thermoplastic, or composite material. The frame 1 thus possesses good strength and rigidity as well as good impact resistance. In some embodiments, the frame 1 is made of thermoplastic or composite material, which, while meeting the requirements for impact resistance, also has a lighter weight, which is beneficial for the lightweight design of the battery pack.
[0034] The heat insulation element 2 is located inside the frame 1. The heat insulation element 2 is made of a material with low thermal conductivity, such as foam, glass wool, or ceramic fiber, and possesses good heat insulation capabilities. The heat insulation element 2 is partially connected to the frame 1, forming multiple cavities 3 between the heat insulation element 2 and the frame 1. The number of cavities 3 is determined by the shape and structure of the heat insulation element 2 and the connection between the heat insulation element 2 and the frame 1. Figure 1 In the heat insulation component shown, four parts of the heat insulation body 2 are connected to the frame 1, forming four cavities 3 between the heat insulation body 2 and the frame 1. The arrangement of the cavities 3 helps to reduce the overall weight of the heat insulation component, thus facilitating the lightweight design of the battery pack.
[0035] When used in a battery pack, the heat insulation component is typically placed between the large surfaces of two adjacent battery cells. In this embodiment, the battery cell refers to a cuboid cell, which includes a top wall, a bottom wall, and side walls located between the top and bottom walls. The top wall typically has terminals for connection to a busbar. The side walls include the four surfaces of the cell, arranged in pairs opposite each other. The two surfaces with relatively larger areas are the large surfaces of the cell, and the two surfaces with relatively smaller areas are the side surfaces of the cell. The heat insulation component is placed between the large surfaces of two adjacent battery cells, with the two surfaces of the frame 1 along its thickness direction respectively abutting against the corresponding large surfaces of the battery cells.
[0036] Reference Figure 1 and Figure 2 As shown, the heat insulation component in this embodiment of the application has a first direction X and a second direction Y. The first direction X intersects the second direction Y, and the angle between the first direction X and the second direction Y can be any angle. Figure 1 and Figure 2In the heat insulation component shown, the first direction X and the second direction Y are perpendicular to each other, making the frame 1 a rectangular frame 1. "Perpendicular" includes not only absolute perpendicularity but also generally understood approximate perpendicularity, such as when the angle between any two directions X and Y is between 89° and 91°. Simultaneously, the first direction X can be considered the width direction of the heat insulation component, the second direction Y can be considered the height direction, and the thickness direction of the heat insulation component is perpendicular to both directions X and Y. The thickness directions of the frame 1 and the heat insulation body 2 are in the same direction as the thickness direction of the heat insulation component.
[0037] The thickness of the heat insulation element 2 is less than the thickness of the frame 1. During charging and discharging, the battery cell may encounter overcharging, over-discharging, increased ambient temperature within the battery pack, and increased internal resistance. All of these conditions can cause the battery cell to expand. When the cell expands, the larger surface area of the cell expands more significantly, gradually bulging outwards towards adjacent cells. At this time, the heat insulation element 2 will contact the larger surface area of the cell, preventing direct contact between the larger surfaces of two adjacent cells. This effectively isolates heat transfer, reduces the impact of the expanding cell on adjacent cells, and helps prevent thermal runaway. In other words, under normal cell operation, the surface of the frame 1 is in contact with the larger surface area of the cell; when the cell expands, the surface of the heat insulation element 2 is in contact with the larger surface area of the cell.
[0038] In traditional methods, aerogel heat insulation pads are mostly used for thermal insulation components. These include silicon-based aerogel heat insulation pads, polymer-based aerogel heat insulation pads, and carbon-based aerogel heat insulation pads. However, any of these aerogel heat insulation pads are relatively expensive, and they typically cover the entire surface of the battery cell, resulting in high costs and increasing the economic burden during battery pack manufacturing. In this embodiment, the thermal insulation component eliminates the traditional aerogel heat insulation pad design. Instead, it uses a combination of a frame 1 and a heat insulation body 2. The frame 1 can contact the large surface of the battery cell. When the battery cell expands, the large surface of the cell will contact the heat insulation body 2. The heat insulation body 2 can prevent the large surfaces of adjacent battery cells from contacting each other, thereby isolating heat transfer. This significantly reduces the manufacturing cost of the thermal insulation component and effectively alleviates the economic burden during battery pack manufacturing.
[0039] Optionally, in some embodiments of this application, the heat insulation body 2 includes a contact portion 22 and at least two beams 21; the at least two beams 21 intersect, and the contact portion 22 is disposed at the intersection of the at least two beams 21.
[0040] Among them, the beam 21 has a strip-shaped structure. The number of beams 21 can be flexibly set according to the actual heat insulation requirements. If the expansion of the battery cell is more severe, the number of beams 21 can be set relatively more to improve the heat insulation body 2's resistance to deformation. If the expansion of the battery cell is less severe, the number of beams 21 can be set relatively less to control the weight and cost of the heat insulation body 2.
[0041] Two or more beams 21 intersect, wherein the included angle between adjacent beams 21 can be any angle such as acute, right, or obtuse, and the included angle between adjacent beams 21 can be the same or different, and this embodiment does not impose any restrictions on this. Figure 1 and Figure 2 The insulation component shown includes two beams 21, which are perpendicular to each other.
[0042] The contact portion 22 is located at the intersection of two or more beams 21. The contact portion 22 is used to contact the large surface of the battery cell when the battery cell expands. The degree of expansion of different areas of the large surface of the battery cell may be different when the battery cell expands. Therefore, the contact portion 22 can be located in the area with a higher degree of expansion. That is, the intersection of the beams 21 can correspond to the area with a higher degree of expansion of the large surface of the battery cell. Thus, when the battery cell expands, the contact portion 22 first contacts the large surface of the battery cell. If the degree of expansion of the battery cell is more severe, the beam 21 will also contact the large surface of the battery cell.
[0043] Furthermore, in some embodiments, the proportion of the dimension of each beam 21 along the first direction X to the dimension of the frame 1 along the first direction X can be 10% to 30%, or the proportion of the dimension of each beam 21 along the second direction Y to the dimension of the frame 1 along the second direction Y can be 10% to 30%, so as to avoid the beam 2 being too large and too heavy, which is not conducive to the overall weight control of the thermal insulation component.
[0044] Optionally, in some embodiments of this application, the contact portion 22 is located in the central region within the frame 1. Typically, since the central region of the large surface area of the battery cell expands more significantly during cell expansion, this embodiment places the contact portion 22 in the central region of the frame 1. This allows the contact portion 22 to first contact the central region of the large surface area of the battery cell during expansion. If expansion continues, the beam 21 gradually contacts the edge region of the large surface area of the battery cell. It should be noted that the center of the large surface area of the battery cell refers to the intersection point formed by connecting the midpoints of the sides of the battery cell. The central region of the large surface area of the battery cell refers to the area formed radially outward from the intersection point, while all areas of the large surface area of the battery cell other than the central region are considered edge regions of the large surface area of the battery cell.
[0045] Optionally, in some embodiments of this application, the area of the contact portion 22 accounts for 10% to 50% of the area inside the frame 1. For example, the area of the contact portion 22 can account for 20%, 30%, 40%, etc. If the area of the contact portion 22 accounts for a larger proportion of the area inside the frame 1, the contact area between the contact portion 22 and the large surface of the battery cell is larger, which can more effectively prevent two adjacent expanded battery cells from contacting each other. However, correspondingly, the space inside the frame 1 used to fill the cooling medium is smaller, resulting in a weaker cooling and heat dissipation effect of the cooling medium on the battery cell. If the area of the contact portion 22 accounts for a smaller proportion of the area inside the frame 1, the contact area between the contact portion 22 and the large surface of the battery cell is smaller, which weakens the heat insulation ability for two adjacent expanded battery cells. However, correspondingly, the space inside the frame 1 used to fill the cooling medium is larger, resulting in a stronger cooling and heat dissipation effect of the cooling medium on the battery cell. It should be noted that within the above range, the contact part 22 can fully contact the main expansion area of the large surface of the battery cell to achieve an effective heat insulation effect, while avoiding the contact part 22 occupying too much space in the frame 1. This ensures that the cooling medium can be fully filled in the frame 1, that is, filled between the large surfaces of the battery cell, to achieve an effective cooling effect. It can also control the weight of the heat insulation body 2 and avoid waste of the heat insulation body 2 material, thereby controlling the weight and cost of the heat insulation component.
[0046] Optionally, in some embodiments of this application, a liquid inlet 11 is provided on the frame 1, and the liquid inlet 11 is connected to the cavity 3. The side of the battery cell is usually provided with a cold plate, which contains a circulating cooling medium to dissipate heat and cool the battery cell during charging and discharging. However, if the battery cell operates in a high-temperature environment for a long time, or if severe overcharging or over-discharging occurs, the battery cell may experience thermal runaway. If thermal runaway occurs, the thermally runaway battery cell will eject a large amount of high-temperature gas, smoke, and generate flames. The high-temperature gas and flames may melt the cold plate on the side of the battery cell, causing the cooling medium inside the cold plate to flow out.
[0047] In this embodiment, the frame 1 of the heat insulation component has a liquid inlet hole 11, allowing the cooling medium to flow from the liquid inlet hole 11 into the cavity 3 between the frame 1 and the heat insulation body 2. The cavity 3 is located between the large surfaces of two adjacent cells, meaning the cooling medium can fill the space between the large surfaces of two adjacent cells and directly contact the large surfaces of the cells. This allows the cooling medium to provide timely and efficient cooling to the thermally runaway cells or cells surrounding them, helping to prevent the spread of thermal runaway and avoid fires or explosions in the battery pack. Thus, by providing the liquid inlet hole 11 on the frame 1, the heat insulation component in this embodiment can provide timely cooling to the cells in the event of thermal runaway, slowing the spread of thermal runaway and improving the safety of the battery pack.
[0048] Optionally, in some embodiments of this application, the frame 1 is further provided with an exhaust port 12, which is connected to the cavity 3. Specifically, since the cooling medium in the cavity 3 will vaporize after absorbing heat, if a large amount of gas accumulates in the cavity 3, it will cause an increase in the air pressure between two adjacent battery cell surfaces, which will prevent the cooling medium from flowing in smoothly. Therefore, in this embodiment, an exhaust port 12 is also provided on the frame 1. The exhaust port 12 can discharge the gas in the cavity 3 to avoid excessive gas accumulation, thereby helping to keep the air pressure between two adjacent battery cell surfaces within a normal range, allowing the cooling medium to flow in smoothly to cool the battery cell.
[0049] Optionally, in some embodiments of this application, the frame 1 includes two side frames 103 arranged opposite to each other along the first direction X and a top frame 101 and a bottom frame 102 arranged opposite to each other along the second direction Y; the liquid inlet 11 is provided on at least one side frame 103 and the vent 12 is provided on the top frame 101. Figure 1 and Figure 2 In the heat insulation component shown, the top frame 101, bottom frame 102, and side frame 103 form a rectangular frame 1. It should be noted that when the heat insulation component is installed inside the battery pack, the top frame 101 needs to be positioned near the top of the battery pack, and the bottom frame 102 needs to be positioned near the bottom of the battery pack. To easily distinguish between the top frame 101 and the bottom frame 102, their dimensions can be set differently, such as... Figure 1 and Figure 2 In the heat insulation component shown, the dimension of the top frame 101 along the second direction Y is greater than the dimension of the bottom frame 102 along the second direction Y.
[0050] In this embodiment, the liquid inlet 11 is located on the side frame 103. It is understood that the liquid inlet 11 should not be located on the bottom frame 102, as this would cause leakage of the cooling medium. Furthermore, under gravity, the cooling medium will flow or accumulate on the side where the bottom frame 102 is located. Therefore, in this embodiment, the liquid inlet 11 can be located on the side of the side frame 103 near the bottom frame 102 to facilitate the smooth flow of the cooling medium. Additionally, the liquid inlet 11 can be located on one side frame 103 or two side frames 103, depending on the amount of cooling medium flowing out of the cold plate and the space between adjacent battery cell surfaces. This embodiment does not impose any restrictions on this. Furthermore, the high-temperature gas formed after the cooling medium absorbs heat and vaporizes will flow upwards. Therefore, in this embodiment, the exhaust port 12 is located on the top frame 101 to facilitate the smooth discharge of the high-temperature gas from the top.
[0051] Furthermore, in some embodiments of this application, the distance between the liquid inlet hole 11 and the bottom frame 102 can be set to 5mm to 10mm. For example, the distance between the liquid inlet hole 11 and the bottom frame 102 can be 6mm, 7mm, 8mm, 9mm, etc. Specifically, if the distance between the liquid inlet hole 11 and the bottom frame 102 is larger, more cooling medium needs to flow out of the cold plate to ensure that the cooling medium flows smoothly into the cavity 3. If the distance between the liquid inlet hole 11 and the bottom frame 102 is smaller, it is easier to cause leakage of the cooling medium in the cavity 3. Therefore, in this embodiment, the distance between the liquid inlet hole 11 and the bottom frame 102 is set within the above range to ensure that the cooling medium can flow smoothly into the cavity 3.
[0052] Optionally, in some embodiments of this application, the size of the exhaust hole 12 along the first direction X is not less than 1 mm to avoid high-temperature gas blocking the exhaust hole 12; or, the number of exhaust holes 12 is at least two, and at least two exhaust holes 12 are distributed at intervals along the first direction X on the top frame 101 to improve the exhaust capacity of the exhaust holes 12. Of course, the number of exhaust holes 12 can be flexibly set according to actual needs. In addition, the distance between two adjacent exhaust holes 12 can be equal or unequal, depending on actual needs. Alternatively, in some embodiments, the number of exhaust holes 12 can be two or more, and the size of each exhaust hole 12 along the first direction X is not less than 1 mm to achieve a better exhaust effect.
[0053] Optionally, in some embodiments of this application, the thickness of the frame 1 is T1, and the thickness of the heat insulation 2 is T2, wherein T1 and T2 satisfy: 20% T1 ≤ T2 < T1. In conjunction with the foregoing embodiments, since the thickness of the heat insulation 2 is less than the thickness of the frame 1, therefore T2 < T1. If the thickness of the heat insulation 2 is too thin, the expansion of the battery cell will cause the heat insulation 2 to deform significantly, or even break or be damaged. This will lead to contact between the large surfaces of two adjacent battery cells, which will intensify the heat transfer between them. If thermal runaway occurs in a battery cell, it will also accelerate the spread of the thermal runaway phenomenon. Therefore, the thickness of the heat insulation 2 should not be too thin. In this embodiment, the thickness T2 of the heat insulation 2 is set to be ≥20%T1. For example, the thickness T2 of the heat insulation 2 can be 30%T1, 40%T1, 50%T1, 60%T1, 70%T1, 80%T1, 90%T1, etc., which can be flexibly set according to the expansion of the battery cell. This helps to improve the service life of the heat insulation 2 and enable the heat insulation 2 to play a long-term and effective heat insulation role between two adjacent battery cells.
[0054] This application also provides a battery pack. Figure 3 and Figure 4 These are schematic diagrams illustrating a heat insulation component 01 placed inside a battery pack according to an embodiment of this application. Figure 3This is a schematic diagram viewed along the side wall of cell 02. Figure 3 This is a schematic diagram viewed along the large surface of cell 02, refer to... Figure 3 and Figure 4 The battery pack includes multiple battery cells 02 and a heat insulation component 01. The heat insulation component 01 is located between two adjacent battery cells 02, and the surface of the frame 1 abuts against the surface of the battery cell 02.
[0055] In this configuration, multiple battery cells 02 are connected in series or parallel to form a battery cell assembly. A heat insulation component 01 is disposed between two adjacent battery cells 02. The surface of the frame 1 of the heat insulation component 01 abuts against the large surface of the two adjacent battery cells 02, and the size of the frame 01 is approximately the same as the size of the large surface of the battery cell 02. The heat insulation component 01 adopts the heat insulation component described in any of the aforementioned embodiments. The heat insulation component 01 eliminates the traditional aerogel heat insulation pad design and instead uses a combination of the frame 1 and the heat insulation body 2. When the battery cell 02 expands, the large surface of the battery cell 02 contacts the heat insulation body 2. The heat insulation body 2 can prevent the large surfaces of two adjacent battery cells 02 from contacting each other, thereby isolating heat transfer. This significantly reduces the cost of the heat insulation component 01, thus helping to reduce the manufacturing cost of the battery pack.
[0056] This application also provides a vehicle, which can be a pure electric vehicle or a hybrid vehicle, and includes a battery pack as described in the foregoing embodiments, thereby helping to control the manufacturing cost of the vehicle.
[0057] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0058] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A heat insulation component, characterized in that, Includes a frame (1) and a heat insulation body (2); The heat insulation body (2) is disposed inside the frame (1) and connected to the frame (1). A cavity (3) is formed between the heat insulation body (2) and the frame (1). The thickness of the heat insulation body (2) is less than the thickness of the frame (1).
2. The heat insulation component according to claim 1, characterized in that, The heat insulation body (2) includes a contact portion (22) and at least two beams (21); the at least two beams (21) intersect, and the contact portion (22) is located at the intersection of the at least two beams (21).
3. The heat insulation component according to claim 2, characterized in that, The contact portion (22) is located in the central region within the frame (1).
4. The heat insulation component according to claim 2, characterized in that, The area of the contact portion (22) accounts for 10% to 50% of the area inside the frame (1).
5. The heat insulation component according to claim 1, characterized in that, The frame (1) is provided with a liquid inlet hole (11), which is connected to the cavity (3).
6. The heat insulation component according to claim 1, characterized in that, The frame (1) is also provided with an exhaust hole (12), which is connected to the cavity (3).
7. The heat insulation member according to any one of claims 1 to 6, characterized in that, The frame (1) includes two side frames (103) arranged opposite each other along a first direction (X) and a top frame (101) and a bottom frame (102) arranged opposite each other along a second direction (Y), wherein the first direction (X) intersects the second direction (Y); At least one of the side frames (103) is provided with a liquid inlet hole (11), and the top frame (101) is provided with a vent hole (12). The liquid inlet hole (11) and the vent hole (12) are respectively connected to the cavity (3).
8. The heat insulation component according to claim 7, characterized in that, The liquid inlet (11) is located on the side of the side frame (103) near the bottom frame (102), and the distance between the liquid inlet (11) and the bottom frame (102) is 5mm~10mm.
9. The heat insulation component according to claim 7, characterized in that, The size of the exhaust hole (12) along the first direction (X) is not less than 1 mm; and / or, the number of exhaust holes (12) is at least two, and the at least two exhaust holes (12) are distributed at intervals along the first direction (X) on the top frame (101).
10. The heat insulation member according to any one of claims 1 to 6, characterized in that, The thickness of the frame (1) is T1, and the thickness of the insulation (2) is T2, wherein T1 and T2 satisfy: 20%T1≤T2<T1.
11. A battery pack, characterized in that, It includes a plurality of battery cells (02) and a heat insulation element (01) as described in any one of claims 1 to 10, wherein the heat insulation element (01) is disposed between two adjacent battery cells (02) and the surface of the frame (1) abuts against the surface of the battery cells (02).
12. A vehicle, characterized in that, Includes the battery pack as described in claim 11.