A power battery soft pack heat insulation cover based on basalt heat insulation cotton

Abstract

The present invention provides a soft-pack heat shield for power batteries based on basalt insulation wool, relating to the technical field of power battery protection for new energy vehicles. The shield comprises, from outside to inside, an outer protective layer, a skeleton layer, and an inner laminating layer made of basalt insulation wool, wherein the skeleton layer is provided with a plurality of hollow holes. The shield also comprises a tough adaptive layer disposed between the skeleton layer and the inner laminating layer. The adaptive layer has bowl-shaped recesses corresponding to the positions of each hollow hole, and the adaptive layer, except for the recesses, is flat. The flat portions are fixedly clamped between the skeleton layer and the inner laminating layer, and the recesses extend into the respective hollow holes one by one, with the endpoints of the recesses fixedly connected to the outer protective layer. The heat shield has temperature-adaptive capabilities, capable of automatically adjusting the insulation mode at different ambient temperatures, ensuring that the power battery maintains optimal operating conditions under various conditions.

Description

Technical Field

[0001] The present 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 core components of electric vehicles, are receiving increasing attention. Power batteries generate significant amounts of heat during operation. If this heat cannot be dissipated promptly and effectively, it can severely impact battery efficiency and service life, potentially even leading to safety incidents. Therefore, thermal insulation protection for power batteries has become a pressing technical challenge.

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

[0004] Furthermore, traditional heat shields often have a simple structural design and are unable to automatically adjust their insulation mode according to changes in ambient temperature. In cold environments, batteries require good thermal insulation to maintain their performance, but traditional heat shields cannot provide sufficient insulation. In hot environments, batteries need to effectively dissipate heat to prevent overheating, but traditional heat shields often have limited heat dissipation performance, making them difficult to meet practical needs.

[0005] To address these issues, the industry has begun exploring the application of novel materials and structural designs in power battery heat shields. Basalt insulation wool, as a new insulation material, has attracted considerable attention for its excellent thermal insulation, high-temperature resistance, and environmental performance. However, how to effectively incorporate basalt insulation wool into power battery heat shields and design a heat shield structure with temperature-adaptive capabilities remains a pressing technical challenge. 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 insulation wool. The heat insulation cover 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 comprises, from the outside to the inside, an outer protective layer, a skeleton layer, and an inner bonding layer made of basalt heat insulation wool, wherein the skeleton layer is provided with a plurality of hollow holes;

[0008] The invention also includes a tough adaptive layer, which is arranged between the skeleton layer and the inner bonding layer. The adaptive layer has a bowl-shaped recessed portion at a position corresponding to each of the hollow holes, and the other parts of the adaptive layer except the recessed portions are flat portions.

[0009] The planar portion is fixedly sandwiched 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;

[0010] 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.

[0011] In some embodiments, the outer protective layer is made of carbon fiber woven material.

[0012] In some embodiments, the skeleton layer is made of rubber.

[0013] In some embodiments, the adaptive layer is specifically made of thermoplastic elastomer material.

[0014] In some embodiments, the coefficient of thermal expansion of the adaptive layer ranges from 100 ppm / °C to 150 ppm / °C.

[0015] 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.

[0016] In some embodiments, the recessed portion is made as follows:

[0017] 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;

[0018] Next, the initially formed concave shape is deepened and shaped using a thermoforming process;

[0019] Finally, the recessed portion is manufactured through cooling and shaping processes.

[0020] In some embodiments, an aerogel layer is provided in the inner conforming layer.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By introducing a tough adaptive layer and creating several hollow holes in the skeleton layer, the present invention enables the adaptive layer to exhibit a more significant thermal expansion and contraction effect when the ambient temperature changes. This design gives the heat shield a unique temperature-adaptive capability, automatically adjusting the insulation mode according to different ambient temperatures without manual intervention. Specifically:

[0023] 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.

[0024] In high-temperature environments, the adaptive layer undergoes significant linear expansion, completely separating the outer protective layer from the skeleton layer, creating a heat dissipation pattern that accelerates the dissipation of excess heat from the power battery and prevents overheating. Simultaneously, the bumps and jolts of the car during driving create a blast effect, further enhancing the heat dissipation capacity of the heat shield.

[0025] In low-temperature environments, the adaptive layer undergoes significant linear contraction, 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.

[0026] 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 the 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

[0027] Figure 1 A detailed diagram of the overall structure of the heat shield of the present invention;

[0028] Figure 2 A detailed structural diagram of the skeleton layer of the heat shield of the present invention;

[0029] Figure 3 A detailed structural diagram of the adaptive layer of the heat shield of the present invention;

[0030] Figure 4 It is a partial cross-sectional schematic diagram of the heat shield of the present invention in a balanced heat insulation mode;

[0031] Figure 5 It is a partial cross-sectional schematic diagram of the heat shield of the present invention in the heat dissipation mode;

[0032] 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;

[0033] Figure 7 Schematic diagram of the structure of a soft-pack insulation box made of the insulation cover of the present invention.

[0034] In the figure: 1. Outer protective layer; 2. Skeleton layer; 201. Hollow hole; 3. Adaptive layer; 301. Plane part; 302. Concave part; 4. Inner bonding layer; 100. Soft-pack thermal insulation box. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail, 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 are not to be construed as limiting the present invention.

[0036] 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 accompanying 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 limiting the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0038] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] See also Figure 1-6This embodiment provides a power battery soft pack heat shield based on basalt insulation wool. The heat shield comprises, from outside to inside, an outer protective layer 1, a skeleton layer 2, and an inner laminating layer 4 made of basalt insulation wool. The skeleton layer 2 is provided with a number of hollow holes 201, which provide space for the subsequent design of the adaptive layer 3. The outer protective layer 1, as the outermost layer of the heat shield, is in direct contact with the external environment and has certain wear resistance and impact resistance. The skeleton layer 2 is provided between the outer protective layer 1 and the inner laminating layer 4, supporting the entire heat shield structure. The inner laminating layer 4 is made of basalt insulation wool and adheres closely to the surface of the power battery, providing good thermal insulation.

[0040] The adaptive layer 3 has toughness and is disposed between the skeleton layer 2 and the inner bonding layer 4. The adaptive layer 3 has a bowl-shaped recessed portion 302 at a position corresponding to each hollow hole 201. The other portions of the adaptive layer 3 except the recessed portions 302 are all flat portions 301.

[0041] The flat portion 301 is fixedly sandwiched between the skeleton layer 2 and the inner bonding layer 4 to ensure that it does not move during normal use. 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. This connection method ensures that the outer protective layer 1 is only connected to the recessed end points of the recessed portions 302, and is not directly connected to the skeleton layer 2.

[0042] 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 self-adaptation capability, thereby driving the heat insulation cover to enter different heat insulation modes.

[0043] During assembly, the planar portion 301 of the adaptive layer 3 is securely clamped between the skeleton layer 2 and the inner conforming layer 4, ensuring its stable position and resistance to movement. Simultaneously, the recesses 302 correspond to and extend into the respective holes 201 of the skeleton layer 2, with their endpoints securely 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.

[0044] 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 heat 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 302 will be in a relatively fitted state with the skeleton layer 2. 02 will be deformed due to external vibration. 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 helping to dissipate heat from 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 in battery heat dissipation in the separated state. This design cleverly balances the thermal 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.

[0045] When the ambient temperature rises to a scorching level (e.g., when the ambient temperature is greater than or equal to 30°C), the adaptive layer 3 undergoes significant linear expansion due to its high coefficient of thermal expansion. This change causes the recessed portion 302 to further sink, completely separating the outer protective layer 1 from the frame layer 2, forming a heat dissipation mode. In this case, the long-standing gap between the outer protective layer 1 and the frame layer 2 can accelerate the dissipation of excess heat from the power battery and prevent overheating of the power battery due to the provision of a heat shield. Specifically, the further depression of the recessed portion 302 reduces the contact between the outer protective layer 1 and the frame layer 2, or even completely separates them. This separation forms a stable gap, the size of which is closely related to 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 larger the gap, the more it promotes the dissipation of excess heat within the power battery. The heat can be transferred through 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 greater the depression of the recessed portion 302, resulting in a wider gap and better heat dissipation. At the same time, bumps are inevitable during the driving of the car, and such bumps cause the outer protective layer 1 of the heat shield to move up and down. In the heat dissipation mode, such 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.

[0046] 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 greater the degree of contraction of the recessed portion 302. 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 shift 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 in 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 heat insulation cover, thereby improving the thermal insulation effect. In addition, in a cold environment, external cold air may penetrate into the heat 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.

[0047] Furthermore, the recessed portion 302 is designed to have a certain degree of toughness and elasticity, meaning it can deform within a certain range without breaking or damaging. The connection between the outer protective layer 1 and the concave end of the recessed portion 302 is designed to allow relative translation within this deformation range. This design not only ensures structural flexibility but also enables the heat shield to adapt to different environments. Specifically, this translation mechanism plays a crucial role when the heat shield is subjected to external impact. Impact forces can come from a variety of directions, such as vehicle collisions, bumpy roads, or flying debris. In such situations, the translational ability of the outer protective layer 1 enables it to move slightly relative to the skeleton layer 2, effectively absorbing and dissipating the impact force. This cushioning effect reduces the forces directly transmitted to the power battery, providing additional protection for the battery. Furthermore, this connection method helps improve the overall durability of the heat shield. Since the outer protective layer 1 can translate relative to the skeleton layer 2, it reduces structural fatigue and wear when subjected to continuous or repetitive vibration and stress. This extends the service life of the heat shield and reduces the potential risk of failure due to structural fatigue.

[0048] In summary, the present invention realizes the temperature self-adaptation capability of the heat shield through the design of the 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. In addition, Figure 7 As shown, the present invention can be made into a soft-package thermal insulation box 100 that adapts to the shape of the power battery and is used to completely wrap the power battery.

[0049] 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 carbon fiber filaments to support each other when the outer protective layer 1 is subjected to external friction or impact, effectively dispersing and absorbing the 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, which can significantly extend the service life of the heat shield. In addition, carbon fiber woven materials have an extremely high strength-to-weight ratio, which allows the outer protective layer 1 to significantly reduce the overall weight of the heat shield while maintaining high strength.

[0050] In some embodiments, the skeleton layer 2 is made of a rubber material, which has good elasticity and flexibility, enabling the skeleton layer 2 to deform to a certain extent when subjected to external force, and quickly return to its original shape 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.

[0051] In some embodiments, the adaptive layer 3 is specifically made of a thermoplastic elastomer. This thermoplastic elastomer has excellent elasticity and flexibility at room temperature and can undergo reversible deformation as the ambient temperature changes. When the ambient temperature rises, the thermoplastic elastomer expands, causing the recessed portion 302 to further recess, prompting the outer protective layer 1 to separate from the skeleton layer 2, forming a heat dissipation mode. Conversely, when the ambient temperature drops, the thermoplastic elastomer contracts, and the recessed portion 302 retracts into the hollow hole 201, allowing the outer protective layer 1 and the skeleton layer 2 to fit more tightly together, forming a high heat preservation mode.

[0052] In some embodiments, the thermal expansion coefficient of the adaptive layer 3 ranges from 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.

[0053] In some embodiments, the adaptive layer 3 is secured to the outer protective layer 1, the inner laminating layer 4, and the skeleton layer 2 by a combination of gluing and sewing. Specifically, a high-temperature-resistant, high-strength adhesive is first used to initially bond the layers together to ensure that no relative displacement occurs between the layers under normal use conditions. Subsequently, high-strength wire is used to sew the layers together, further enhancing the strength and stability of the connection between the layers. This combination of gluing and sewing ensures that the connection between the adaptive layer 3 and the outer protective layer 1, the inner laminating layer 4, and the skeleton layer 2 is both firm and flexible. The adhesive can fill the tiny gaps between the layers, providing uniform bonding force, allowing the layers to form a single whole, effectively preventing separation or relative sliding between the layers during use. Stitching further enhances the mechanical strength of the connection, allowing the heat shield to maintain structural integrity and stability when subjected to external forces.

[0054] In some embodiments, the recessed portion 302 is made as follows:

[0055] 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;

[0056] Next, the initially formed concave shape is deepened and shaped using a thermoforming process under controlled temperature and pressure conditions to ensure that the concave portion 302 has the desired bowl-shaped structure and an appropriate depth;

[0057] Finally, through cooling and shaping treatment, the shape of the recessed portion 302 is stabilized, and the production of the recessed portion 302 is completed.

[0058] In some embodiments, an aerogel layer is provided within the inner laminating layer 4. This aerogel layer is embedded between the inner laminating layer 4 and the power battery, serving as an additional layer of thermal insulation. Aerogel, with its extremely low thermal conductivity and high porosity, provides excellent thermal insulation, further enhancing the heat shield's effectiveness. Furthermore, the presence of the aerogel layer reduces the transfer of heat generated by the power battery during operation to the external environment, helping to improve the battery's operating efficiency and service life in cold environments.

[0059] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A power battery soft pack heat insulation cover based on basalt heat insulation wool, characterized by: From the outside to the inside, it comprises an outer protective layer (1), a skeleton layer (2), and an inner bonding layer (4) made of basalt thermal insulation cotton, wherein the skeleton layer (2) is provided with a plurality of hollow holes (201); It also includes a tough adaptive layer (3), the adaptive layer (3) being arranged between the skeleton layer (2) and the inner bonding layer (4), the adaptive layer (3) being provided with a bowl-shaped recessed portion (302) at a position corresponding to each of the hollow holes (201), and the other portions of the adaptive layer (3) except for each of the recessed portions (302) being flat portions (301); The planar portion (301) is fixedly clamped between the skeleton layer (2) and the inner bonding layer (4), and each of the recessed portions (302) extends into each of the hollow holes (201) in a one-to-one correspondence, 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 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) ranges from 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), the outer protective layer (1), the inner bonding layer (4), and the skeleton layer (2) are all fixed by a connection method combining 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: First, 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 completed 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 in the inner bonding layer (4).

Images