Battery pack housing assembly for a vehicle and vehicle

Abstract

This invention discloses a battery pack housing assembly for a vehicle and a vehicle thereof. The battery pack housing assembly according to the invention includes a beam, which is continuous and circumferentially arranged to define a receiving cavity for accommodating the battery pack. Multiple closed and spaced-apart chambers are formed within the beam, extending along the beam. The beam has a uniform cross-section and is integrally formed in the extending direction. The battery pack housing assembly according to the invention features an integrally formed and continuous beam, which is arranged circumferentially as a frame structure for the battery pack housing to define the receiving cavity for accommodating and protecting the battery pack. The beam, as the frame structure of the battery pack, has multiple spaced-apart chambers inside, improving the overall structural strength and bending resistance of the battery pack housing assembly. This avoids the risk of frame deformation and battery pack compression caused by external forces such as vehicle vibration during driving, thus improving vehicle safety and reliability.

Description

Technical Field

[0001] This invention relates to the field of battery pack housing structure design, and in particular to a battery pack housing assembly for a vehicle and the vehicle thereof. Background Technology

[0002] Currently, the frame of the battery pack box is usually made of extruded beams. The cross-section of the beams is mostly "C-shaped" or "U-shaped" profiles. After being cut into sections, they are connected by welding or bolts at the corners or the middle of the long side of the box. This type of battery pack box frame has poor torsional stiffness and weak joints, making it prone to deformation. This causes changes in the internal space of the box, which can compress the battery cells and trigger the risk of thermal runaway. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a battery pack housing assembly for a vehicle. The battery pack housing assembly according to the invention features an integrally formed and continuous beam, within which multiple spaced chambers are provided, thereby improving the overall structural strength and bending resistance of the battery pack housing assembly.

[0004] The present invention also proposes a vehicle including the above-described battery pack housing assembly.

[0005] The battery pack housing assembly according to the invention includes a beam that is continuously and circumferentially arranged to define a receiving cavity for accommodating the battery pack. A plurality of closed and spaced-apart chambers are formed within the beam, the chambers extending along the beam. The beam has a uniform cross-section and is integrally formed in the extending direction.

[0006] The battery pack housing assembly according to the present invention features an integrally formed and continuous beam, which surrounds the battery pack housing to form a frame structure, thereby defining a receiving cavity for accommodating and protecting the battery pack. The beam, as the frame structure of the battery pack, has multiple spaced-apart chambers inside, which improves the overall structural strength and bending resistance of the battery pack housing assembly. This avoids the risk of the frame deforming and squeezing the battery pack due to the impact of external forces such as vehicle vibration on the battery pack housing, thus improving the safety and reliability of the vehicle.

[0007] According to one embodiment of the present invention, the beam body includes: an outer frame and a web, the outer frame enclosing and forming a beam body cavity; the web is configured as a plurality of webs disposed within the beam body cavity, the plurality of webs dividing the beam body cavity into a plurality of spaced-apart chambers; wherein, the outer frame is integrally formed.

[0008] According to one embodiment of the present invention, the outer frame includes: an upper panel, a lower panel, a first side panel, and a second side panel, wherein the upper panel and the lower panel are spaced apart; the first side panel is disposed between the upper panel and the lower panel and connected to one side edge of the upper panel and the lower panel; the second side panel is disposed between the upper panel and the lower panel and connected to the other side edge of the upper panel and the lower panel; wherein the web is connected to at least two of the upper panel, the lower panel, the first side panel, and the second side panel.

[0009] According to one embodiment of the present invention, a plurality of said web plates are arranged in parallel intervals or staggered within the beam cavity.

[0010] According to one embodiment of the present invention, the web is connected between the first side plate and the second side plate, and the beam further includes a connecting plate, which is disposed between two adjacent webs, and the connecting plate is connected to the web and fits against the first side plate or the second side plate.

[0011] According to one embodiment of the present invention, the web, the connecting plate, and the outer frame are integrally roll-formed.

[0012] According to one embodiment of the present invention, the beam further includes: a flange, the flange being disposed at the free end of the second side plate and / or the web, the flange being adapted to fit against the web and / or the second side plate.

[0013] According to one embodiment of the present invention, the beam further includes: stiffeners, which are arranged in an array or staggered arrangement on at least one of the upper panel, the lower panel, the first side plate, the second side plate, the web plate and the connecting plate.

[0014] According to one embodiment of the present invention, the bottom plate is provided with an overflow port corresponding to the liquid cooling plate of the battery pack.

[0015] The vehicle according to the present invention is briefly described below.

[0016] The vehicle according to the present invention includes the battery pack housing assembly of the above embodiments. Since the vehicle according to the present invention is provided with the battery pack housing assembly of the above embodiments, the battery pack housing assembly has an integrally formed beam continuously surrounding the frame structure of the battery pack housing to accommodate and protect the battery pack. This improves the overall structural strength and bending resistance of the battery pack housing assembly, and avoids the risk of the frame deforming and squeezing the battery pack due to the impact of external forces such as vehicle vibration on the battery pack housing, thereby improving the safety and reliability of the vehicle.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a battery pack housing assembly according to an embodiment of the present invention; Figure 2 This is a simplified schematic diagram of a beam cross-section according to an embodiment of the present invention; Figure 3 This is a simplified schematic diagram of beam bending according to an embodiment of the present invention.

[0019] Figure label: Battery pack housing assembly 1; 11. Beam body, 110. Chamber, 111. Outer frame, 112. Web plate, 113. Upper panel, 114. Lower panel, 115. First side plate, 116. Second side plate, 117. Connecting plate, 118. Flanged edge; Reception cavity 12. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Currently, the frame of the battery pack box is usually made of extruded beams. The cross-section of the beams is mostly "C-shaped" or "U-shaped" profiles. After being cut into sections, they are connected by welding or bolts at the corners or the middle of the long side of the box. This type of battery pack box frame has poor torsional stiffness and weak joints, making it prone to deformation. This causes changes in the internal space of the box, which can compress the battery cells and trigger the risk of thermal runaway.

[0022] The following is for reference. Figures 1-3 A battery pack housing assembly according to an embodiment of the present invention is described.

[0023] The battery pack housing assembly 1 according to the present invention includes a beam 11, which is continuously and circumferentially arranged to define a receiving cavity 12 for receiving a battery. A plurality of closed and spaced-apart chambers 110 are formed in the beam 11, which extend along the beam 11. The beam 11 has a uniform cross section in the extending direction and is integrally formed.

[0024] According to the battery pack housing assembly 1 of the present invention, a beam body 11 is provided. The beam body 11 is the frame structure of the battery pack housing. The beam body 11 is arranged in a surrounding manner, thus enclosing a receiving cavity 12 that can accommodate the battery pack. The surrounding design of the beam body 11 provides space for the assembly of the battery pack. At the same time, the beam body 11, as the border of the battery pack, can support and protect the entire battery pack housing assembly 1. Specifically: Multiple closed and spaced-apart chambers 110 are formed inside the beam body 11. These chambers 110 extend along the beam body 11. The design of the multiple chambers 110 makes the entire beam body 11 form a cross-section similar to a "mu" character or other shapes. Compared with the C-shaped and single-chamber mouth-shaped cross-sections of traditional battery pack borders, the cross-section moment of inertia of the beam body 11 with multiple chambers 110 is larger. The multiple closed chambers 110 can disperse the external forces received by the beam body 11, avoiding local stress concentration. When the battery pack housing assembly 1 is subjected to external impact or vibration, the chambers 110 can play a buffering role. When subjected to bending and torsional loads, the deformation of the beam body 11 is small, which can effectively ensure the stability of the internal space of the battery pack. When a vehicle collision occurs, the border (i.e., the structure surrounded by the beam body 11) is not easily collapsed and deformed, thus greatly reducing the risk of the battery cells being short-circuited, catching fire, or exploding due to extrusion, and improving the safety and reliability of the battery pack housing assembly 1.

[0025] At the same time, the beam body 11 is configured to have a constant cross-section and be integrally formed in the extending direction. Here, the extending direction is the direction in which the beam body 11 is arranged in a surrounding manner. It can be simply understood that the border of the entire battery pack is formed by processing a complete beam body 11. Different from the traditional battery pack border formed by welding multiple beams, this integrally formed beam body 11 avoids the weak points at the welding joints, eliminates the stress concentration problem caused by welding, makes the mechanical properties of each part of the beam body 11 more uniform, enhances the overall performance of the beam body 11, and further improves the overall strength and stability of the battery pack housing assembly 1.

[0026] From the perspective of manufacturing process, the integrally formed beam body 11 can be manufactured by advanced processing technologies, such as hot bending process, etc. It can eliminate the deformation of the border caused by the large welding heat, ensuring the dimensional accuracy, assembly accuracy, and sealing performance of the border. Compared with the traditional battery pack housing processing scheme, it can not only ensure the dimensional accuracy and quality stability of the beam body 11, but also improve production efficiency and reduce production costs. Moreover, the integrally formed beam body 11 is more beautiful in appearance, can reduce the surface unevenness problem caused by welding or bolt connection, and提升了产品的整体美观度. In practical applications, this battery pack housing assembly 1 can better adapt to the complex use environment of the vehicle, can effectively protect the battery pack from external factors, extend the service life of the battery pack, and improve the safety and reliability of the vehicle.

[0027] According to one embodiment of the present invention, the beam 11 includes an outer frame 111 and webs 112. The outer frame 111 encloses and forms a beam cavity. Multiple webs 112 are configured to be disposed within the beam cavity, and these webs 112 divide the beam cavity into multiple spaced-apart chambers 110. The outer frame 111 is integrally formed. The combined design of the outer frame 111 and webs 112 further optimizes the structural performance of the beam 11. The integrally formed design of the outer frame 111, as the external support structure of the beam 11, ensures overall strength and stability, and better resists external impacts and pressures. The webs 112 enhance the internal structure of the beam 11. The multiple webs 112 divide the beam cavity into multiple spaced-apart chambers 110, allowing the beam 11 to distribute stress more evenly when under load.

[0028] From a mechanical perspective, the presence of multiple chambers 110 increases the moment of inertia of the beam 11, improving its bending and torsional resistance. When the beam 11 is subjected to bending or torsional forces, the chambers 110 can work together to share the external force, thereby reducing the deformation of the beam 11. Simultaneously, the multi-chamber structure 110 can effectively prevent localized stress concentration, avoiding cracking or damage to the beam 11 under stress.

[0029] Furthermore, the web 112 can also be understood as a reinforcing structure inside the outer frame 111, which can further enhance the overall rigidity of the beam 11. Since the outer frame 111 is enclosed to form a beam cavity, the web 112 can play a reinforcing role within the beam cavity, which is equivalent to adding multiple support points to the beam 11, making the beam 11 more stable when subjected to external forces. When the vehicle experiences bumps, vibrations, or collisions during operation, the beam 11 can better cope with various complex mechanical environments, protecting the safety of the battery pack.

[0030] According to one embodiment of the present invention, the outer frame 111 includes: an upper panel 113, a lower panel 114, a first side panel 115, and a second side panel 116, wherein the upper panel 113 and the lower panel 114 are spaced apart; the first side panel 115 is disposed between the upper panel 113 and the lower panel 114 and connected to one side edge of the upper panel 113 and the lower panel 114; the second side panel 116 is disposed between the upper panel 113 and the lower panel 114 and connected to the other side edge of the upper panel 113 and the lower panel 114; wherein, the web 112 is connected to at least two of the upper panel 113, the lower panel 114, the first side panel 115, and the second side panel 116. Figure 2As shown, the outer frame 111 is provided with an upper panel 113, a lower panel 114, a first side panel 115, and a second side panel 116. The upper panel 113 and lower panel 114 provide vertical support for the beam 11, ensuring its stability in the vertical direction. The first side panel 115 and second side panel 116 are connected to the two side edges of the upper panel 113 and lower panel 114, forming a closed frame structure and enhancing the overall strength of the beam 11. The web 112 is connected to at least two of the upper panel 113, lower panel 114, first side panel 115, and second side panel 116, allowing the web 112 to be tightly integrated with the outer frame 111, further enhancing the structural stability of the beam 11.

[0031] When the web 112 is connected to multiple plates (i.e., the upper plate 113, the lower plate 114, the first side plate 115, and the second side plate 116), a more stable support system can be formed. For example, when the web 112 is connected to both the upper plate 113 and the lower plate 114, it can effectively transmit forces in the vertical direction and reduce the deformation of the upper plate 113 and the lower plate 114; when the web 112 is connected to the first side plate 115 and the second side plate 116, it can enhance the torsional resistance of the beam 11 in the horizontal direction. Moreover, through its connection with different plates, the web 112 can distribute the external forces on the beam 11 to various parts, avoiding excessive local stress.

[0032] In practical applications, this outer frame 111 structure can better adapt to various complex working conditions during vehicle operation. When the vehicle encounters bumps, turns or collisions, the outer frame 111 and the web plate 112 work together to effectively protect the battery pack, reduce the impact of external forces on the battery pack, and thus improve the safety and reliability of the battery pack. According to one embodiment of the present invention, multiple web plates 112 are arranged in parallel or staggered arrangements within the beam body cavity. Parallel arrangement of the web plates 112 ensures a regular and orderly internal structure of the beam body 11. When subjected to external forces, each web plate 112 is evenly stressed, effectively dispersing stress and ensuring the stability of the beam body 11 in all directions. This arrangement results in more balanced mechanical properties of the beam body 11, making it particularly suitable for situations requiring relatively uniform pressure or tension. Staggered arrangement of the web plates 112 further enhances the torsional and bending resistance of the beam body 11. The staggered structure allows the web plates 112 to cooperate with each other when subjected to complex external forces, forming a more complex force transmission path and more effectively dispersing the external forces to various parts of the beam body 11. For example, when the beam body 11 is subjected to torsional force, the staggered arrangement of the web plates 112 can better resist torsional deformation, reducing the torsional angle of the beam body 11 and thus protecting the battery pack from excessive torque. Whether arranged in parallel or staggered configurations, the design of multiple web plates 112 significantly enhances the overall performance of the beam 11, enabling it to remain stable under various operating conditions, better protecting the battery pack, and ensuring its safety and reliability during vehicle use. In actual manufacturing, a suitable arrangement of the web plates 112 can be selected based on the specific operating environment of the vehicle and the design requirements of the battery pack to achieve optimal performance. According to one embodiment of the present invention, the web 112 is connected between the first side plate 115 and the second side plate 116. The beam 11 further includes a connecting plate 117, which is disposed between two adjacent webs 112. The connecting plate 117 is connected to the web 112 and fits against the first side plate 115 or the second side plate 116. The connection plate 117 further enhances the structural stability of the beam 11. When the connecting plate 117 is connected to the web 112 and fits against the first side plate 115 or the second side plate 116, it can strengthen the connection between the web 112 and the side plate, making the overall structure of the beam 11 more robust. During vehicle operation, the battery pack is subjected to various complex forces, such as vibration and impact. When the beam 11 is subjected to lateral force, the connecting plate 117 can transfer the force from the first side plate 115 or the second side plate 116 to the web plate 112, and then distribute it to the entire beam 11. This reduces the pressure on individual components, avoids local stress concentration, and improves the deformation resistance of the beam 11. It also enhances the structural stability and stress dispersion ability of the beam 11, providing more reliable protection for the battery pack and further improving the safety and reliability of the vehicle. According to one embodiment of the present invention, the web plate 112, the connecting plate 117, and the outer frame 111 are integrally roll-formed. The integral roll-forming process makes the connection between the web plate 112, the connecting plate 117, and the outer frame 111 tighter and stronger, avoiding stress concentration and structural loosening caused by loose connections. This ensures the collaborative working ability between the various parts of the beam 11, allowing the beam 11 to resist external forces as a whole when under load, further improving the overall strength and stability of the beam 11. Furthermore, integral roll-forming reduces the steps of processing and assembling multiple components separately, greatly improving production efficiency and reducing production costs. Simultaneously, the reduction in assembly steps also reduces quality problems caused by assembly errors, improving product quality stability. In terms of appearance, the surface of the integrally roll-formed beam 11 is smoother and flatter, without protrusions or gaps caused by welding or bolt connections. This not only enhances the product's aesthetics but also reduces the possibility of dust, moisture, and other impurities entering the interior of the beam 11, which is beneficial for protecting the internal structure and battery pack of the beam 11.

[0033] According to one embodiment of the present invention, the beam 11 further includes a flange 118, which is disposed at the free end of the second side plate 116 and / or the web 112, and is adapted to fit against the web 112 and / or the second side plate 116. The flange 118 further enhances the structural strength and stability of the beam 11. When the flange 118 fits against the web 112 and / or the second side plate 116, it increases the edge stiffness of the beam 11, enabling the beam 11 to better resist deformation when subjected to external forces. During vehicle operation, the beam 11 may be subjected to forces in various directions, such as road bumps and lateral forces during vehicle turning. The flange 118 can effectively disperse these external forces, preventing stress concentration at the edges of the beam 11, thereby reducing the risk of damage to the beam 11. During processing, the flange 118 can be completed simultaneously in the integrated roll forming process without adding any extra processing steps, thus ensuring production efficiency. Moreover, the integration of the flange 118 with other parts of the beam 11 can make the overall performance of the beam 11 even better.

[0034] According to one embodiment of the present invention, the beam 11 further includes stiffeners, which are arranged in an array or staggered manner on at least one of the top plate 113, bottom plate 114, first side plate 115, second side plate 116, web plate 112, and connecting plate 117. The array or staggered arrangement of the stiffeners can further enhance the structural strength of each part of the beam 11. When the reinforcing ribs are arranged in an array, a regular support network can be formed in a specific area of ​​the beam 11, so that when the beam 11 is subjected to external force, the force can be evenly distributed to each reinforcing rib, thereby enhancing the overall compressive strength of the beam 11. For example, when the battery pack housing assembly 1 is subjected to vertical pressure, the reinforcing ribs arranged in an array on the upper panel 113 and the lower panel 114 can effectively transmit and disperse the pressure, reduce local stress concentration, and prevent the beam 11 from deforming or being damaged. The staggered arrangement of the reinforcing ribs can better cope with external forces in complex directions. During vehicle operation, the beam 11 may be subjected to forces from different directions, such as the impact force when bumping or the lateral force when turning. The staggered arrangement of the reinforcing ribs can form a more complex force transmission path, dispersing these complex external forces to various parts of the beam 11 and enhancing the torsional and bending resistance of the beam 11.

[0035] According to one embodiment of the present invention, the lower panel 114 is provided with an overflow port corresponding to the liquid cooling plate of the battery pack. The overflow port allows excess glue to overflow, preventing glue from accumulating between the lower panel 114 and the liquid cooling plate, thereby ensuring the adhesion and connection stability between the two.

[0036] In some embodiments, such as Figure 1 As shown, the outer frame 111 has a total of 4 beams, of which at least three can be integrally formed and processed by hot bending, which can reduce the number of welding points.

[0037] The vehicle according to the present invention is briefly described below.

[0038] The vehicle according to the present invention includes the battery pack housing assembly 1 in the above embodiments. Since the vehicle according to the present invention is provided with the battery pack housing assembly 1 in the above embodiments, the battery pack housing assembly 1 has an integrally formed beam 11 continuously arranged around it to form the frame structure of the battery pack housing, which is used to accommodate and protect the battery pack. This improves the overall structural strength and bending resistance of the battery pack housing assembly 1, and can avoid the risk of the frame deforming and squeezing the battery pack due to the impact of external forces such as vehicle vibration on the battery pack housing, thereby improving the safety and reliability of the vehicle.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0041] In the description of this invention, "a plurality of" means two or more.

[0042] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0043] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack housing assembly for a vehicle, characterized in that, include: A beam (11) is continuously and circumferentially arranged to define a receiving cavity (12) for accommodating a battery pack. A plurality of closed and spaced-apart chambers (110) are formed within the beam (11), which extend along the beam (11). The beam (11) has a uniform cross section and is integrally formed in the extending direction.

2. The battery pack housing assembly for a vehicle according to claim 1, characterized in that, The beam (11) includes: The outer frame (111) is closed and forms a beam cavity; Web plates (112), wherein multiple web plates (112) are disposed within the beam body cavity, and the multiple web plates (112) divide the beam body cavity into multiple spaced-apart chambers (110); wherein The outer frame (111) is integrally formed.

3. The battery pack housing assembly for a vehicle according to claim 2, characterized in that, The outer frame (111) includes: An upper panel (113) and a lower panel (114) are provided at intervals; The first side plate (115) is disposed between the upper panel (113) and the lower panel (114) and is connected to one side edge of the upper panel (113) and the lower panel (114); A second side plate (116) is disposed between the upper panel (113) and the lower panel (114) and connected to the other edge of the upper panel (113) and the lower panel (114); wherein The web plate (112) is connected to at least two of the upper panel (113), the lower panel (114), the first side plate (115), and the second side plate (116).

4. The battery pack housing assembly for a vehicle according to claim 3, characterized in that, Multiple web plates (112) are arranged in parallel or staggered within the beam cavity.

5. The battery pack housing assembly for a vehicle according to claim 3, characterized in that, The web (112) is connected between the first side plate (115) and the second side plate (116), and the beam (11) further includes: A connecting plate (117) is disposed between two adjacent web plates (112). The connecting plate (117) is connected to the web plates (112) and is attached to the first side plate (115) or the second side plate (116).

6. The battery pack housing assembly for a vehicle according to claim 5, characterized in that, The web plate (112), the connecting plate (117), and the outer frame (111) are integrally roll-formed.

7. The battery pack housing assembly for a vehicle according to claim 6, characterized in that, The beam (11) also includes: A flange (118) is provided at the free end of the second side plate (116) and / or the web plate (112), and the flange (118) is adapted to fit against the web plate (112) and / or the second side plate (116).

8. The battery pack housing assembly for a vehicle according to claim 6, characterized in that, The beam (11) also includes: The reinforcing ribs are arranged in an array or staggered arrangement on at least one of the upper panel (113), the lower panel (114), the first side plate (115), the second side plate (116), the web plate (112), and the connecting plate (117).

9. The battery pack housing assembly for a vehicle according to claim 3, characterized in that, The lower panel (114) is provided with an overflow port corresponding to the liquid cooling plate of the battery pack.

10. A vehicle, characterized in that, Includes the battery pack housing assembly as described in any one of claims 1-9.

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