Power battery soft package heat shield based on basalt heat insulation cotton

Abstract

The invention provides a power battery soft package heat insulation cover based on basalt heat insulation cotton, and relates to the technical field of new energy automobile power battery protection, the power battery soft package heat insulation cover sequentially comprises an outer protection layer, a framework layer and an inner attaching layer made of basalt heat insulation cotton from outside to inside, and a plurality of hollow holes are formed in the framework layer; the self-adaptive floor further comprises a self-adaptive layer with toughness, the self-adaptive layer is arranged between the framework layer and the inner attaching layer, bowl-shaped sunken parts are arranged at the positions, corresponding to the positions of the hollowed-out holes, of the self-adaptive layer, and other parts, except the sunken parts, of the self-adaptive layer are all plane parts. The plane part is fixedly clamped between the framework layer and the inner attaching layer, the concave parts stretch into the hollowed-out holes in a one-to-one correspondence mode, and the concave end points of the concave parts are fixedly connected to the outer protection layer. The heat shield has the temperature self-adaptive capability, can automatically adjust the heat insulation mode at different environment temperatures, and ensures that the power battery can keep the optimal working state under various conditions.

Description

Technical Field

[0001] The invention relates to the technical field of power battery protection for new energy vehicles, and in particular to a power battery soft-pack heat insulation cover based on basalt heat insulation cotton. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance and safety of power batteries, as the core components of electric vehicles, are receiving increasing attention. Power batteries generate a lot of heat during operation. If they cannot be dissipated in a timely and effective manner, they will seriously affect the working efficiency and service life of the batteries, and may even cause safety accidents. Therefore, thermal insulation protection of power batteries has become a technical problem that needs to be solved urgently.

[0003] Traditional power battery heat shields are mostly made of metal or plastic materials. Although these materials have a certain heat insulation effect, they have many shortcomings. First of all, metal materials have good thermal conductivity. Although they can quickly conduct the heat generated by the battery, in a high temperature environment, the metal heat shield itself will become hot, which will not only affect the heat insulation effect, but may also cause thermal damage to surrounding components. Although plastic materials are lightweight and low in cost, they have poor high temperature resistance and are prone to aging and deformation. The heat insulation performance will drop significantly after long-term use.

[0004] In addition, the structural design of traditional heat shields is often relatively simple, and it is impossible to automatically adjust the heat insulation mode according to changes in ambient temperature. In cold environments, batteries need good heat preservation to maintain their working performance, but traditional heat shields cannot provide sufficient heat preservation effect; in high temperature environments, batteries need to effectively dissipate heat to prevent overheating, but the heat dissipation performance of traditional heat shields is often limited and difficult to meet actual needs.

[0005] In order to solve the above problems, the industry has begun to explore the application of new materials and structural designs in power battery heat shields. As a new type of thermal insulation material, basalt thermal insulation wool has attracted much attention due to its excellent thermal insulation performance, high temperature resistance and environmental protection performance. However, how to effectively apply basalt thermal insulation wool to power battery heat shields and design a heat shield structure with temperature self-adaptation capability is still a technical problem that needs to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to provide a power battery soft pack heat insulation cover based on basalt heat insulation cotton, which has temperature self-adaptation capability and can automatically adjust the heat insulation mode under different ambient temperatures to ensure that the power battery can maintain the best working state under various conditions.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a power battery soft pack heat insulation cover based on basalt heat insulation wool, which includes an outer protective layer, a skeleton layer and an inner bonding layer made of basalt heat insulation wool from the outside to the inside, wherein the skeleton layer is provided with a plurality of hollow holes; It also includes an adaptive layer with toughness, the adaptive layer is arranged between the skeleton layer and the inner bonding layer, the adaptive layer is provided with a bowl-shaped concave portion at a position corresponding to the position of each hollow hole, and the other parts of the adaptive layer except the concave portions are all flat parts; The planar portion is fixedly clamped between the skeleton layer and the inner bonding layer, the recessed portions extend into the hollow holes one by one, and the recessed end points of the recessed portions are fixedly connected to the outer protective layer, and the outer protective layer and the skeleton layer are not connected to each other; The thermal expansion coefficient of the adaptive layer is greater than the thermal expansion coefficients of the outer protective layer, the skeleton layer and the inner bonding layer.

[0008] In some embodiments, the outer protective layer is made of carbon fiber woven material.

[0009] In some embodiments, the skeleton layer is made of rubber material.

[0010] In some embodiments, the adaptive layer is specifically made of thermoplastic elastomer material.

[0011] In some embodiments, the coefficient of thermal expansion of the adaptive layer ranges from 100 ppm / °C to 150 ppm / °C.

[0012] In some embodiments, the adaptive layer is fixed to the outer protective layer, the inner fitting layer and the skeleton layer by a combination of gluing and sewing.

[0013] In some embodiments, the method for making the recessed portion is as follows: First, a preliminary concave shape corresponding to the hollow hole is formed on a selected area of ​​the adaptive layer by pressing with a mold; Next, the initially formed concave shape is deepened and shaped using a thermoforming process; Finally, the recessed portion is manufactured through cooling and shaping processes.

[0014] In some embodiments, an aerogel layer is provided in the inner bonding layer.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention introduces a tough adaptive layer and opens a number of hollow holes on the skeleton layer, so that the adaptive layer can show a more significant thermal expansion and contraction effect when the ambient temperature changes. This design gives the heat shield a unique temperature adaptive ability, which can automatically adjust the insulation mode according to different ambient temperatures without manual intervention. Specifically: Under suitable ambient temperature, the heat shield is in a balanced insulation mode, and the outer protective layer and the skeleton layer are periodically closed and separated, which not only ensures the thermal insulation effect of the power battery, but also assists in the heat dissipation of the battery.

[0016] In a high temperature environment, the adaptive layer undergoes significant linear expansion, which completely separates the outer protective layer from the skeleton layer, forming a heat dissipation mode, which accelerates the dissipation of excess heat from the power battery and prevents the battery from overheating. At the same time, the bumps during the car's driving process produce a blast effect, further enhancing the heat dissipation capacity of the heat shield.

[0017] In low temperature environments, the adaptive layer undergoes significant linear shrinkage, making the outer protective layer and the skeleton layer more tightly closed, forming a high thermal insulation mode, ensuring that the power battery can maintain a suitable operating temperature even in cold environments.

[0018] In addition, the recessed portion design in the present invention has a certain toughness and elasticity, and can be deformed within a certain range without breaking or being damaged. The connection method between the outer protective layer and the recessed end points of the recessed portion allows relative translation within this deformation range. Therefore, the translation ability of the outer protective layer enables it to make a small displacement relative to the skeleton layer, thereby effectively absorbing and dispersing impact force. This buffering effect reduces the force directly transmitted to the power battery and provides additional protection for the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a detailed diagram of the overall structure of the heat shield of the present invention; Figure 2 It is a detailed structural diagram of the skeleton layer of the heat shield of the present invention; Figure 3 A detailed structural diagram of the adaptive layer of the heat shield of the present invention; Figure 4 It is a partial cross-sectional schematic diagram of the heat insulation cover of the present invention in a balanced heat insulation mode; Figure 5 It is a partial cross-sectional schematic diagram of the heat shield of the present invention in the heat dissipation mode; Figure 6 It is a partial cross-sectional schematic diagram of the heat insulation cover of the present invention in a high heat preservation mode; Figure 7 It is a schematic structural diagram of a soft-package heat-insulating box made of the heat-insulating cover of the present invention.

[0020] In the figure: 1, outer protective layer; 2, skeleton layer; 201, hollow hole; 3, adaptive layer; 301, plane part; 302, recessed part; 4, inner bonding layer; 100, soft-pack insulation box. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-6, This embodiment provides a power battery soft pack heat shield based on basalt heat insulation wool, which includes, from outside to inside, an outer protective layer 1, a skeleton layer 2, and an inner bonding layer 4 made of basalt heat insulation wool. The skeleton layer 2 is provided with a plurality of hollow holes 201, which provide space for the subsequent design of the adaptive layer 3. The outer protective layer 1 is the outermost layer of the heat shield, which is directly in contact with the external environment and has certain wear resistance and impact resistance. The skeleton layer 2 is arranged between the outer protective layer 1 and the inner bonding layer 4, and plays a role in supporting the entire heat shield structure. The inner bonding layer 4 is made of basalt heat insulation wool, which is in close contact with the surface of the power battery and provides a good heat insulation effect; The adaptive layer 3 has toughness and is disposed between the skeleton layer 2 and the inner bonding layer 4. The adaptive layer 3 is provided with a bowl-shaped concave portion 302 at a position corresponding to each hollow hole 201, and the other parts of the adaptive layer 3 except the concave portions 302 are all flat portions 301. The plane portion 301 is fixedly sandwiched between the skeleton layer 2 and the inner bonding layer 4 to ensure that it will not be displaced during normal use, and each recessed portion 302 extends into each hollow hole 201 one by one and the recessed end points of the recessed portion 302 are fixedly connected to the outer protective layer 1. This connection method enables the outer protective layer 1 to be connected only to the recessed end points of each recessed portion 302, and not directly connected to the skeleton layer 2; The thermal expansion coefficient of the adaptive layer 3 is greater than that of the outer protective layer 1, the skeleton layer 2 and the inner bonding layer 4. This characteristic enables the adaptive layer 3 to exhibit a more significant thermal expansion and contraction effect when the ambient temperature changes, thereby giving the heat insulation cover of the present invention a unique temperature adaptive ability, thereby driving the heat insulation cover to enter different insulation modes.

[0026] During the assembly process, the plane portion 301 of the adaptive layer 3 is firmly clamped between the skeleton layer 2 and the inner bonding layer 4 to ensure that its position is stable and not easy to move. At the same time, each recessed portion 302 extends into each hollow hole 201 of the skeleton layer 2 one by one, and the recessed end points of these recessed portions 302 are fixedly connected to the outer protective layer 1. It is worth noting that there is no direct connection between the outer protective layer 1 and the skeleton layer 2.

[0027] When the ambient temperature is within a suitable range (for example, between 10°C and 30°C), the adaptive layer 3 of the power battery soft pack heat insulation cover will not experience significant thermal expansion and contraction. At this time, the entire system is in a balanced insulation mode. In this mode, the outer protective layer 1 is attached to the skeleton layer 2, but due to the design of the recessed portion 302, the contact between them is not completely fixed. In fact, when the vehicle is running smoothly or the recessed portion 302 recovers its original shape due to its own elasticity without external force, the outer protective layer 1 and the skeleton layer 2 will maintain a relatively fitted state, that is, a closed state. In this state, the power battery is well insulated and heat-insulated. However, when the vehicle encounters bumps during driving, the recessed portion 3 02 will be deformed due to external vibration, and this deformation will cause the outer protective layer 1 to separate to a certain extent relative to the skeleton layer 2. In the separated state, the excess heat emitted by the power battery can be more easily dissipated through the gap between the outer protective layer 1 and the skeleton layer 2, thereby contributing to the heat dissipation of the battery. Therefore, when the heat shield is in the balanced insulation mode, the outer protective layer 1 and the skeleton layer 2 are periodically closed and separated, which can not only provide good thermal insulation for the power battery in the closed state, but also assist the battery in heat dissipation in the separated state. This design cleverly balances the insulation and heat dissipation requirements of the power battery under different driving conditions, ensuring that the battery can maintain the best working condition in various environments.

[0028] When the ambient temperature rises to a hot level (for example, when the ambient temperature is greater than or equal to 30°C), the adaptive layer 3 undergoes significant linear expansion due to its high thermal expansion coefficient. This change causes the recessed portion 302 to further sink, so that the outer protective layer 1 is completely separated from the skeleton layer 2, forming a heat dissipation mode. At this time, the long-standing gap between the outer protective layer 1 and the skeleton layer 2 can accelerate the power battery to dissipate excess heat and prevent the power battery from overheating due to the provision of a heat insulation cover. Specifically, the further depression of the recessed portion 302 reduces the contact between the outer protective layer 1 and the skeleton layer 2, or even completely separates them. This separation forms a stable gap, the size of which is closely related to the temperature: the higher the temperature, the wider the gap. The existence of this gap is crucial to the heat dissipation of the power battery. The increase in the gap promotes the dissipation of excess heat inside the power battery. The heat can be transferred by convection and radiation through the air in the gap, thereby more effectively dissipating from the battery surface to the external environment. Therefore, it can be said that the higher the temperature, the more severe the depression of the recessed portion 302, resulting in a wider gap and a better heat dissipation effect. At the same time, during the driving of the car, bumps are inevitable, and this bump causes the outer protective layer 1 of the heat shield to move up and down. In the heat dissipation mode, this displacement works together with the deformation of the recessed portion 302 to produce a blowing effect. The blowing effect means that when the outer protective layer 1 moves up and down, it pushes the air in the gap to flow like the blades of a blower. This flow accelerates the convection dissipation of heat inside the heat shield. Specifically, as the outer protective layer 1 moves up and down, it continuously takes away hot air from the battery surface and introduces cooler air into the gap, thereby forming a continuous heat exchange process. This process effectively reduces the temperature of the power battery and prevents battery overheating caused by high temperature environment. At the same time, the blowing effect also enhances the heat dissipation capacity of the heat shield, so that the power battery can maintain a relatively stable operating temperature even under extremely hot conditions.

[0029] On the contrary, when the ambient temperature drops to a cold level (for example, when the ambient temperature is less than or equal to 10°C), the adaptive layer 3 will undergo significant linear contraction. This change causes the recessed portion 302 to retract toward the hollow hole 201, and the lower the temperature, the more significant the contraction of the adaptive layer 3, and the degree of contraction of the recessed portion 302 increases accordingly. This increased contraction of the recessed portion 302 causes the outer protective layer 1 and the skeleton layer 2 to be more tightly closed. In other words, the colder the environment, the stronger the contraction of the recessed portion 302, and the higher the fit between the outer protective layer 1 and the skeleton layer 2, causing the outer protective layer 1 to fit tightly to the skeleton layer 2 and form a high thermal insulation mode. In this mode, the outer protective layer 1 is firmly fixed and will not be displaced or produce a blast effect. At this time, the layers of the heat shield are tightly combined to provide the strongest thermal insulation ability to ensure that the power battery can maintain a suitable operating temperature even in a cold environment. Specifically When the outer protective layer 1 is tightly fitted on the skeleton layer 2, the gap between them becomes extremely small, almost eliminating the space for air flow. Thermal convection is an important way of heat transfer, which relies on the flow of fluid to transfer heat. By reducing the gap between layers, thermal convection is significantly suppressed, thereby reducing heat loss. In addition, the tightly fitted layer structure also increases the thermal resistance on the heat transfer path. Thermal resistance is an obstacle to heat transfer, and its size depends on the thermal conductivity and thickness of the material. When the outer protective layer 1 and the skeleton layer 2 are tightly fitted, they form a continuous insulation layer, which increases the difficulty of heat passing through the insulation cover, thereby improving the insulation effect. In addition, in a cold environment, external cold air may penetrate into the insulation cover through any available gaps. When the outer protective layer 1 is tightly fitted on the skeleton layer 2, these potential cold air intrusion paths are effectively closed, thereby preventing the direct impact of cold air on the power battery.

[0030] In addition, the design of the recessed portion 302 has a certain toughness and elasticity, which means that it can be deformed within a certain range without breaking or being damaged. The connection between the outer protective layer 1 and the recessed end point of the recessed portion 302 is designed to allow relative translation within this deformation range. This design not only ensures the flexibility of the structure, but also enables the heat shield to make adaptive adjustments in different environments. Specifically, this translation mechanism plays a vital role when the heat shield is subjected to external impact. The impact force may come from multiple directions, such as vehicle collisions, road bumps, or splashing gravel. In this case, the translation ability of the outer protective layer 1 enables it to make a small displacement relative to the skeleton layer 2, thereby effectively absorbing and dispersing the impact force. This buffering effect reduces the force directly transmitted to the power battery and provides additional protection for the battery. In addition, this connection method also helps to improve the overall durability of the heat shield. Since the outer protective layer 1 can translate relative to the skeleton layer 2, it can reduce structural fatigue and wear when encountering continuous or repeated vibrations and stresses. This extends the service life of the heat shield and reduces the potential risk of failure due to structural fatigue.

[0031] In summary, the present invention realizes the temperature self-adaptation capability of the heat insulation cover through the design of the self-adaptive layer 3, and can automatically adjust the heat insulation mode under different ambient temperatures without manual intervention, while ensuring the flexibility and durability of the structure. Figure 7 As shown, the present invention can be made into a soft-package thermal insulation box 100 adapted to the shape of a power battery, and used to completely wrap the power battery.

[0032] In some embodiments, the outer protective layer 1 is made of a carbon fiber woven material, which is made of high-strength carbon fiber filaments through a weaving process. This structure allows the outer protective layer 1 to support each other when subjected to external friction or impact, effectively dispersing and absorbing force, thereby protecting the internal skeleton layer 2 and the basalt insulation cotton inner bonding layer 4 from damage. Compared with other materials, carbon fiber woven materials have higher wear resistance and impact resistance, and can significantly extend the service life of the heat shield. In addition, carbon fiber woven materials have an extremely high strength-to-weight ratio, so that the outer protective layer 1 can significantly reduce the overall weight of the heat shield while maintaining high strength.

[0033] In some embodiments, the skeleton layer 2 is made of a rubber material having good elasticity and flexibility, which enables the skeleton layer 2 to deform to a certain extent when subjected to external force, and quickly return to its original state after the external force is removed. At the same time, the rubber material also has good temperature resistance and chemical stability, and can maintain the stability of its physical and chemical properties in the high temperature environment generated by the operation of the power battery and the chemical corrosion environment that may be encountered.

[0034] In some embodiments, the adaptive layer 3 is specifically made of a thermoplastic elastomer. This thermoplastic elastomer has good elasticity and flexibility at room temperature, and can undergo reversible deformation as the ambient temperature changes. When the ambient temperature rises, the thermoplastic elastomer will expand, causing the recessed portion 302 to further recess, causing the outer protective layer 1 to separate from the skeleton layer 2, forming a heat dissipation mode. On the contrary, when the ambient temperature drops, the thermoplastic elastomer will shrink, and the recessed portion 302 will retract into the hollow hole 201, so that the outer protective layer 1 and the skeleton layer 2 fit more closely together, forming a high heat preservation mode.

[0035] In some embodiments, the coefficient of thermal expansion of the adaptive layer 3 is in the range of 100 ppm / °C to 150 ppm / °C. This range ensures that the adaptive layer 3 can sensitively adjust its thermal insulation mode under different ambient temperatures to provide effective protection for the power battery.

[0036] In some embodiments, the adaptive layer 3 is fixed to the outer protective layer 1, the inner bonding layer 4 and the skeleton layer 2 by a combination of gluing and sewing. Specifically, the layers are first initially bonded together using a high-temperature resistant, high-strength adhesive to ensure that no relative displacement occurs between the layers under normal use conditions. Subsequently, on the basis of gluing, high-strength wire is used to sew the layers to further enhance the connection strength and stability between the layers. By using a combination of gluing and sewing, it can be ensured that the connection between the adaptive layer 3 and the outer protective layer 1, the inner bonding layer 4 and the skeleton layer 2 is both firm and flexible. The adhesive can fill the tiny gaps between the layers, provide uniform bonding force, so that the layers form a whole, and effectively prevent interlayer separation or relative sliding during use. The sewing further enhances the mechanical strength of the connection, so that the heat shield can maintain the integrity and stability of the structure when subjected to external forces.

[0037] In some embodiments, the recessed portion 302 is made as follows: First, a preliminary concave shape corresponding to the hollow hole 201 of the skeleton layer 2 is formed on the selected area of ​​the adaptive layer 3 by means of mold pressing; Next, the initially formed concave shape is deepened and shaped by using a thermoforming process under controlled temperature and pressure conditions to ensure that the concave portion 302 has a desired bowl-shaped structure and an appropriate depth; Finally, through cooling and shaping treatment, the shape of the recessed portion 302 is stabilized, and the manufacturing of the recessed portion 302 is completed.

[0038] In some embodiments, an aerogel layer is provided in the inner laminating layer 4. The aerogel layer is embedded between the inner laminating layer 4 and the power battery as an additional thermal insulation material. Aerogel provides excellent thermal insulation performance with its extremely low thermal conductivity and high porosity, further enhancing the thermal insulation effect of the heat shield. At the same time, the presence of the aerogel layer can also reduce the heat generated by the power battery during operation and transferred to the external environment, which helps to improve the working efficiency and service life of the battery in a cold environment.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A power battery soft pack heat insulation cover based on basalt heat insulation wool, characterized by: It comprises, from the outside to the inside, an outer protective layer (1), a skeleton layer (2), and an inner bonding layer (4) made of basalt thermal insulation wool, wherein the skeleton layer (2) is provided with a plurality of hollow holes (201); It also comprises an adaptive layer (3) having toughness, wherein the adaptive layer (3) is arranged between the skeleton layer (2) and the inner bonding layer (4), and the adaptive layer (3) is provided with a bowl-shaped recessed portion (302) at a position corresponding to the position of each hollow hole (201), and the other parts of the adaptive layer (3) except for each recessed portion (302) are all flat parts (301); The planar portion (301) is fixedly clamped between the skeleton layer (2) and the inner bonding layer (4), the recessed portions (302) extend into the hollow holes (201) one by one, and the recessed end points of the recessed portions (302) are fixedly connected to the outer protective layer (1), and the outer protective layer (1) and the skeleton layer (2) are not connected to each other; The thermal expansion coefficient of the adaptive layer (3) is greater than the thermal expansion coefficients of the outer protective layer (1), the skeleton layer (2) and the inner bonding layer (4).

2. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The outer protective layer (1) is made of carbon fiber braided material.

3. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The skeleton layer (2) is made of rubber material.

4. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The adaptive layer (3) is specifically made of a thermoplastic elastomer material.

5. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The thermal expansion coefficient of the adaptive layer (3) is in the range of 100 ppm / °C to 150 ppm / °C.

6. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The adaptive layer (3) is fixed to the outer protective layer (1), the inner bonding layer (4) and the skeleton layer (2) by a combination of gluing and sewing.

7. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: The method for making the recessed portion (302) is as follows: Firstly, a preliminary concave shape corresponding to the hollow hole (201) is formed on a selected area of ​​the adaptive layer (3) by pressing with a mold; Next, the initially formed concave shape is deepened and shaped using a thermoforming process; Finally, the recessed portion (302) is manufactured through cooling and shaping processes.

8. The power battery soft pack heat insulation cover based on basalt heat insulation wool according to claim 1, characterized in that: An aerogel layer is provided inside the inner bonding layer (4).

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