Battery box assembly and battery pack

Abstract

This invention provides a battery housing assembly and a battery pack. The battery housing assembly includes a fixed beam and a movable beam. The fixed beam forms a cavity for accommodating the battery pack. The movable beam is detachably mounted on the inner wall of the fixed beam. Both the fixed and movable beams have mutually abutting inclined surfaces extending downwards towards the center of the cavity. The movable beam has a first protrusion protruding from the inner wall of the fixed beam on the side opposite to the fixed beam. An expansion space is formed between the first protrusion and the inner wall of the fixed beam. When the battery pack is installed in the cavity, it abuts against the first protrusion, and the expansion space provides a gap between the battery pack and a portion of the inner wall of the fixed beam. This invention solves the problem in the prior art where battery packs are difficult to remove and install due to battery expansion.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a battery housing assembly and a battery pack. Background Technology

[0002] A detachable CTP (cell-to-pack) battery pack detachably mounts the battery pack within a cavity formed by the mounting beams of the housing. When a battery malfunctions, it can be removed for replacement without replacing the entire battery pack. However, after prolonged use, the batteries expand, and the resulting expansion forces the battery pack against the mounting beams, making it extremely difficult or impossible to remove the battery pack normally from the cavity during maintenance. Furthermore, after maintenance, the expanded battery pack increases in size and cannot be easily reinserted into the cavity. Utility Model Content

[0003] The main objective of this invention is to provide a battery housing assembly and a battery pack to solve the problem in the prior art where the battery pack is difficult to remove and install due to battery expansion.

[0004] To achieve the above objectives, according to one aspect of the present invention, a battery housing assembly is provided, comprising: a fixed beam for forming a receiving cavity for accommodating a battery pack; and a movable beam detachably disposed on the inner wall of the fixed beam, wherein both the fixed beam and the movable beam have mutually abutting inclined surfaces extending from top to bottom toward the center of the receiving cavity, and the movable beam having a first protrusion protruding from the inner wall of the fixed beam on the side opposite to the fixed beam, wherein an expansion space is formed between the first protrusion and the inner wall of the fixed beam, and when the battery pack is installed in the receiving cavity, the battery pack abuts against the first protrusion, and the battery pack is spaced apart from a portion of the inner wall of the fixed beam by the expansion space.

[0005] Furthermore, from top to bottom, the inner wall of the fixed beam has a first inclined surface and a first extended surface that are bent and connected in sequence, and the movable beam has a second inclined surface and a second extended surface that are bent and connected in sequence. The first extended surface extends vertically from top to bottom, and the second extended surface extends from the edge of the receiving cavity to the center and serves as the bottom wall of the first protrusion. The first inclined surface and the second inclined surface fit together as inclined surfaces, and at least a portion of the first extended surface and the second extended surface serve as at least a portion of the sidewall of the expansion space.

[0006] Furthermore, the length of the expansion space from the edge of the cavity to the center is 5-100mm.

[0007] Furthermore, the battery housing assembly also includes fasteners, and both the fixed beam and the movable beam have mounting holes. The fasteners pass through the mounting holes and connect the fixed beam and the movable beam.

[0008] Furthermore, the mounting hole extends a predetermined length from the edge of the receiving cavity to the center, and the fastener is adjusted to pass through the mounting hole to change the relative fit position between the inclined surfaces.

[0009] Furthermore, the top of the movable beam has a second protrusion that protrudes upward from the upper surface of the fixed beam. The second protrusion has a disassembly structure, through which the movable beam is disassembled from the fixed beam.

[0010] Furthermore, the side of the second protrusion has a hollow structure, which is exposed to the fixing beam and the battery pack, and serves as a disassembly structure.

[0011] Furthermore, the angle between the inclined plane and the vertical plane is 15°-75°.

[0012] Furthermore, each fixed beam is detachably provided with multiple movable beams, each movable beam being used to abut a battery pack.

[0013] According to another aspect of the present invention, a battery pack is provided, including a battery pack and the aforementioned battery housing assembly, wherein the battery pack is detachably disposed within the battery housing assembly.

[0014] By applying the technical solution of this utility model, the movable beam can be removed through its detachable design and the inclined surface cooperation between the movable beam and the fixed beam. Furthermore, by providing a first protrusion on the movable beam that extends beyond the inner wall of the fixed beam, an expansion space is formed between the first protrusion and the inner wall of the fixed beam. Even after removing the movable beam, a certain gap remains between the battery pack and the inner wall of the fixed beam. This solves the problem of difficulty in removing and installing batteries after the battery pack has expanded in existing technologies, reducing the difficulty of repairing damaged batteries in the battery pack. Moreover, by selecting an appropriate length for the expansion space from the edge to the center of the receiving cavity, it ensures smooth removal and installation of the battery pack while also facilitating… To ensure efficient use of the internal space of the battery pack; by using fasteners to detachably connect the fixed beam and the movable beam, the battery pack abutting against the movable beam will not shift within the cavity, improving battery pack safety; the second protrusion at the top of the movable beam has a disassembly structure, which allows the movable beam to be disassembled and the battery pack to be easily removed when the battery pack is under excessive expansion pressure; since each movable beam abuts against one battery pack, when a battery pack needs maintenance, only the corresponding abutting movable beam can be removed without affecting the fixing relationship of other battery packs; the excellent detachability of the battery pack facilitates battery pack maintenance and extends the service life of the battery pack. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the battery housing assembly of this utility model is shown;

[0017] Figure 2 It shows Figure 1 Exploded view of the battery housing assembly;

[0018] Figure 3 It shows Figure 1 A side sectional view of the battery housing assembly;

[0019] Figure 4 It shows Figure 1 A schematic diagram of the movable beam of the battery box assembly;

[0020] Figure 5 An exploded view of the battery pack of this utility model is shown;

[0021] Figure 6 It shows Figure 5 A top view of the battery pack;

[0022] Figure 7 It shows Figure 6 Sectional view along the middle AA direction;

[0023] Figure 8 It shows Figure 7 Enlarged view of point B in the middle.

[0024] The above figures include the following reference numerals:

[0025] 10. Fixed beam; 11. First inclined surface; 12. First extension surface; 20. Movable beam; 21. First protrusion; 22. Second inclined surface; 23. Second extension surface; 24. Mounting hole; 25. Second protrusion; 251. Disassembly structure; 30. Expansion space; 40. Fastener; 41. Gasket; 50. Battery pack; 60. Pressure plate. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] To address the problem of difficulty in removing and installing batteries after they have expanded in existing battery packs, this application provides a battery housing assembly and a battery pack.

[0030] like Figures 1 to 5 The battery housing assembly shown includes a fixed beam 10 and a movable beam 20. The fixed beam 10 forms a cavity for accommodating a battery pack 50. The movable beam 20 is detachably disposed on the inner wall of the fixed beam 10. Both the fixed beam 10 and the movable beam 20 have mutually abutting inclined surfaces that extend from top to bottom toward the center of the cavity. The movable beam 20 has a first protrusion 21 protruding from the inner wall of the fixed beam 10 on the side opposite to the fixed beam 10. An expansion space 30 is formed between the first protrusion 21 and the inner wall of the fixed beam 10. When the battery pack 50 is installed in the cavity, the battery pack 50 abuts against the first protrusion 21, and the battery pack 50 is spaced apart from a portion of the inner wall of the fixed beam 10 by the expansion space 30.

[0031] This embodiment utilizes the detachable design of the movable beam 20 and the inclined surface cooperation between the movable beam 20 and the fixed beam 10 to enable the removal of the movable beam 20. By providing a first protrusion 21 on the movable beam 20 that protrudes beyond the inner wall of the fixed beam 10, an expansion space 30 is formed between the first protrusion 21 and the inner wall of the fixed beam 10. This prevents direct contact between the battery pack 50 and the inner wall of the fixed beam 10. Thus, when the battery pack 50 needs to be replaced, after removing the movable beam 20, the expansion of the battery pack 50 can be contained within the expansion space 30, preventing direct contact and compression between the battery pack 50 and the inner wall of the fixed beam 10. A certain gap remains between the battery pack 50 and the inner wall of the fixed beam 10, allowing the expanded battery pack 50 to be easily removed from the receiving cavity. Simultaneously, the repaired battery pack 50 can be easily reinserted into the receiving cavity due to the existence of this gap, reducing the difficulty of repairing damaged batteries in the battery pack.

[0032] In this embodiment, the fixed beam 10 can be a side beam, or an intermediate beam such as a crossbeam or longitudinal beam in the middle of the housing. The battery pack 50 can include multiple batteries arranged in sequence and end plates located at both ends of the arrangement direction. The material and structure of the end plates are not limited, and they can be plastic end plates with insulating properties.

[0033] like Figure 7 and 8As shown, the inner wall of the fixed beam 10 has a first inclined surface 11 and a first extended surface 12 that are sequentially bent from top to bottom. The movable beam 20 has a second inclined surface 22 and a second extended surface 23 that are sequentially bent from top to bottom. The first inclined surface 11 and the second inclined surface 22 are inclined and fit together as inclined surfaces, so that the movable beam 20 can be inserted between the fixed beam 10 and the battery pack 50 by means of the inclined surface. The first extended surface 12 is located below the first inclined surface 11 and extends vertically from top to bottom. The second extended surface 23 is located below the second inclined surface 22 but extends from the edge of the receiving cavity to the center in a direction away from the first extended surface 12. Thus, the second extended surface 23 is essentially the bottom surface of the protrusion, so that a certain distance is formed between the end face of the battery pack 50 and the first extended surface 12. That is, at least part of the first extended surface 12 and the second extended surface 23 serve as at least part of the sidewall of the expansion space 30.

[0034] In this embodiment, the corners of the first inclined surface 11 and the first extended surface 12, and the corners of the second inclined surface 22 and the second extended surface 23 are basically aligned, that is, the second extended surface 23 is located at the top of the first extended surface 12, so that the space below the second extended surface 23 serves as the expansion space 30. The first extended surface 12, the second extended surface 23, the bottom plate of the housing or the liquid cooling plate, and the end face of the battery pack 50 together form the expansion space 30, achieving compatibility with the expansion of the battery pack 50. In this way, on the one hand, the inclined surfaces can fit together better, and on the other hand, the size of the expansion space 30 is maximized.

[0035] like Figure 8 As shown, preferably, the length of the expansion space 30 in this embodiment is 5-100mm from the edge of the cavity to the center, which ensures that after the movable beam 20 is disassembled, the cavity space can smoothly remove the battery pack 50 and smoothly reinsert the repaired battery pack 50, while also helping to ensure the utilization rate of the internal space of the battery pack.

[0036] like Figure 2 As shown, the battery housing assembly of this embodiment also includes fasteners 40. Both the fixed beam 10 and the movable beam 20 have mounting holes 24. The fasteners 40 pass through the mounting holes 24 and connect the fixed beam 10 and the movable beam 20, so that the fixed beam 10 and the movable beam 20 form a detachable fixed connection relationship. After the battery pack 50 abuts against the first protrusion 21 of the movable beam 20, it can be detachably fixedly installed in the receiving cavity, ensuring that the battery pack 50 will not be displaced in the receiving cavity and improving the safety of the battery pack 50.

[0037] Taking fastener 40 as a fixing bolt as an example, the long fixing bolt passes through the mounting holes on the fixing beam 10 and the movable beam 20, and extends out of the mounting hole of the fixing beam 10. After the nut is installed on the extended part of the fixing bolt, it is tightened to ensure the reliability of the connection between the fixing beam 10 and the movable beam 20. A washer 41 can be set between the movable beam 20 and the fixing bolt. The function of the washer 41 is to increase the pressing area of ​​the fixing bolt and improve the stability and fastening effect of the connection.

[0038] Optionally, in this embodiment, multiple mounting holes 24 are provided on both the fixed beam 10 and the movable beam 20, and the positions of the mounting holes 24 correspond one-to-one. Taking the fixed beam 10 as an example, mounting holes 24 are provided on the first inclined surface 11 of the fixed beam 10, and mounting holes 24 are also provided on the upper surface of the part that is not cut to form the inclined surface. This allows the fixed beam 10 and the movable beam 20 to form a multi-point installation, ensuring the overall installation is stable and reliable. Further, optionally, the mounting holes 24 on the fixed beam 10 and the movable beam 20 are symmetrically arranged to further improve the stability and fastening effect of the connection.

[0039] In this embodiment, along the direction from the edge of the receiving cavity to the center, i.e. Figure 3 In the horizontal direction, the mounting hole 24 extends to a predetermined length, and the fastener 40 is adjusted to pass through the mounting hole 24. This allows the installation position between the fixed beam 10 and the movable beam 20 to be changed as needed, i.e., the relative contact position between the inclined surfaces. This improves adaptability. For example, after the battery expands, the overall volume of the battery pack 50 increases. After removing the repaired battery pack 50 and reinstalling it in the receiving cavity, the movable beam 20 needs to be reinstalled to limit the battery pack 50, allowing it to be detachably and securely installed in the receiving cavity. Because the expanded battery pack 50 has a larger volume, the contact position between the inclined surfaces of the reinstalled movable beam 20 and the fixed beam 10 will change. At this time, the position of the fastener 40 within the mounting hole 24 can be adjusted to ensure that the enlarged battery pack 50 can be reinstalled in the receiving cavity after repair.

[0040] In this embodiment, the top of the movable beam 20 has a second protrusion 25, which protrudes upward from the upper surface of the fixed beam 10. The second protrusion 25 has a disassembly structure 251, through which the movable beam 20 is disassembled from the fixed beam 10. Since the battery pack 50 abuts against the first protrusion 21 of the movable beam 20 when installed in the receiving cavity, when the battery pack 50 expands, such as... Figure 8As indicated by the leftward arrow A, an expansion pressure will be generated outward from the center of the cavity. When the expansion pressure is too large, the battery pack 50 will be firmly pressed against the movable beam 20. At this time, the movable beam 20 is difficult to disassemble from the fixed beam 10. In this case, the disassembly structure 251 can be used to assist in disassembling the movable beam 20 from the fixed beam 10. Specifically, the disassembly structure 251 can be a hollow structure with the interior hollowed out from the second protrusion 25, or it can be a hole with the interior partially hollowed out from the second protrusion 25. Long strip, T-shaped, or L-shaped tools can be used to insert the tools into the hollow structure or hole of the second protrusion 25 and disassemble the movable beam 20 from the fixed beam 10.

[0041] The second protrusion 25 in this embodiment has a hollow structure on its side, which serves as a disassembly structure 251. This hollow structure is exposed to the fixed beam 10 and the battery pack 50. As the disassembly structure 251, it helps to disassemble the movable beam 20, which is difficult to disassemble due to the expansion pressure generated by the battery pack 50, from the fixed beam 10. Specifically, the second protrusion 25 is a rectangular structure, with its central portion being hollowed out along the length of the fixed beam 10, thus forming the hollow structure. This hollow structure is located on the side of the second protrusion 25 along the length of the fixed beam 10, allowing it to be exposed to both the fixed beam 10 and the battery pack 50. A long, thin tool can be inserted through the exposed hollow structure, and the movable beam 20, which is therefore difficult to disassemble, can be disassembled from the fixed beam 10 using a lever principle. Optionally, hollow structures can be provided on both sides of the second protrusion 25 along its length, allowing both ends to be used for disassembly.

[0042] In this embodiment, mounting holes 24 are provided on the second protrusion 25, and a portion of the mounting holes 24 on the second protrusion 25 are aligned with the inclined surface below, thus engaging with the mounting holes 24 on the inclined surface of the fixing beam 10. The remaining mounting holes 24 on the second protrusion 25 are not aligned vertically with the inclined surface, but are offset, corresponding to the mounting holes 24 on the upper surface of the fixing beam 10, thereby achieving a stable and reliable installation and fixing effect.

[0043] In this embodiment, the inclined surfaces of the fixed beam 10 and the movable beam 20 that fit together are inclined from top to bottom along the direction close to the center of the receiving cavity, and the angle between the inclined surfaces and the vertical plane is 15°-75°, which makes it easier to disassemble the movable beam 20 from the fixed beam 10. Both the fixed beam 10 and the movable beam 20 have mounting holes 24, and the fasteners 40 are inserted into the mounting holes 24 to fix the fixed beam 10 and the movable beam 20. This ensures that the fixed beam 10 and the movable beam 20 are reliably fixed and installed, while the movable beam 20 can be more easily disassembled from the fixed beam 10.

[0044] In this embodiment, the fixed beam 10 includes a first fixed beam and a second fixed beam located at both ends of the battery pack 50 (i.e., both ends along the battery arrangement direction). There are multiple movable beams 20, and each of the first and second fixed beams is provided with a movable beam 20. When the battery pack 50 is installed in the receiving cavity of the battery box assembly, the opposite ends of the battery pack 50 abut against the first protrusions 21 of the movable beams 20 on both sides of the fixed beam 10, so that both ends of the battery pack 50 have expansion space 30. On the one hand, the size of the expansion space 30 can be increased, thereby increasing the range of expansion of the battery pack 50. On the other hand, the installation and fastening of the battery pack 50 can be adjusted from both ends, so that when the battery pack 50 expands, it can expand to both ends, avoiding the situation where the expansion pressure at one end cannot be released, resulting in uneven expansion pressure on the battery pack 50, and improving the flexibility during installation and expansion. Of course, additional directions can be added as needed, with movable beams 20 and fixed beams 10 installed on all four sides of the receiving cavity, so that the battery pack 50 has expansion space 30 on all four sides. Alternatively, fixed beams 10 and movable beams 20 can be installed on only one side wall of the receiving cavity, while conventional side beams or intermediate beams are used on the other side walls, making the structure simpler. It should be noted that the number of movable beams 20 on each fixed beam 10 can be set as needed, either one or multiple. Preferably, multiple movable beams 20 are detachably installed on each fixed beam 10, and each movable beam 20 is used to abut against one battery pack 50. When a battery pack needs to be repaired, only the corresponding abutting movable beam 20 can be removed without affecting the fixing relationship of other battery packs. A battery pack 50 can have a movable beam 20 installed at only one end, or both ends of the battery pack 50 can have movable beams 20 installed.

[0045] This embodiment also provides a battery pack, including a battery pack 50 and the aforementioned battery housing assembly. The battery pack 50 is detachably disposed within the battery housing assembly. Even after expansion, the battery pack 50 can be easily removed from the battery housing assembly for maintenance and reinstalled within the battery housing assembly, giving the battery pack 50 excellent detachability. This facilitates maintenance, reduces the maintenance cost of the battery pack 50, and extends the service life of the battery pack.

[0046] In this embodiment, it is preferable that the fixed beam 10 abuts against the end of the battery pack 50, and the batteries in the battery pack 50 are arranged sequentially along its thickness direction. The reason for adopting this arrangement is that when the battery expands, it generally expands along its thickness direction, with the larger side expanding more significantly, while the other two smaller sides expand less significantly. Therefore, the battery arrangement direction in this embodiment allows the expansion space 30 to offset the expansion of the larger side when the battery expands, thereby ensuring that the expansion space 30 plays its full role.

[0047] like Figure 5 , Figure 6 As shown, the battery pack in this embodiment also includes a pressure plate 60, which is connected to the upper surface of the fixing beam 10 and located above the battery pack 50. The pressure plate 60 can prevent the battery pack 50 from moving upward, thereby detachably fixing the battery pack 50 in the battery box assembly. The pressure plate 60 is fixed to the battery box assembly by bolts, which ensures the reliability of the fixed installation of the battery pack 50 and improves the safety of the battery pack.

[0048] It should be noted that "multiple" in the above embodiments refers to at least two.

[0049] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0050] 1. This solves the problem in existing technologies where batteries are difficult to remove and install after they have expanded in the battery pack;

[0051] 2. Choosing an appropriate lateral length for the expansion space can ensure that the battery can be easily removed and installed, while also maximizing the utilization of the internal space of the battery pack.

[0052] 3. By setting fasteners to detachably connect the fixed beam and the movable beam, the battery pack that abuts against the movable beam will not shift within the cavity, thus improving the safety of the battery pack.

[0053] 4. When the battery pack experiences excessive expansion pressure, the movable beam can be disassembled using the disassembly structure on the movable beam, and the battery pack can be easily removed.

[0054] 5. Each movable beam abuts against a battery pack. When a battery pack needs to be repaired, only the corresponding movable beam can be removed without affecting the fixing relationship of other battery packs.

[0055] 6. The battery pack's excellent removability facilitates maintenance and extends its lifespan.

[0056] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0059] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery housing assembly, characterized in that, include: A fixed beam (10) is used to form a receiving cavity for accommodating the battery pack (50); A movable beam (20) is detachably disposed on the inner wall of the fixed beam (10), and both the fixed beam (10) and the movable beam (20) have mutually fitting inclined surfaces. The inclined surfaces extend from top to bottom toward the center of the receiving cavity. The movable beam (20) has a first protrusion (21) protruding from the inner wall of the fixed beam (10) on the side away from the fixed beam (10). An expansion space (30) is formed between the first protrusion (21) and the inner wall of the fixed beam (10). When the battery pack (50) is installed in the receiving cavity, the battery pack (50) abuts against the first protrusion (21), and the battery pack (50) is spaced apart from a portion of the inner wall of the fixed beam (10) through the expansion space (30).

2. The battery housing assembly according to claim 1, characterized in that, From top to bottom, the inner wall of the fixed beam (10) has a first inclined surface (11) and a first extended surface (12) that are bent and connected in sequence, and the movable beam (20) has a second inclined surface (22) and a second extended surface (23) that are bent and connected in sequence. The first extended surface (12) extends vertically from top to bottom, and the second extended surface (23) extends from the edge of the receiving cavity to the center and serves as the bottom wall of the first protrusion (21). The first inclined surface (11) and the second inclined surface (22) fit together as the inclined surfaces, and at least a portion of the first extended surface (12) and the second extended surface (23) serve as at least a portion of the sidewall of the expansion space (30).

3. The battery housing assembly according to claim 2, characterized in that, The length of the expansion space (30) from the edge of the receiving cavity to the center is 5-100 mm.

4. The battery housing assembly according to claim 1, characterized in that, The battery housing assembly also includes fasteners (40), and both the fixed beam (10) and the movable beam (20) have mounting holes (24). The fasteners (40) pass through the mounting holes (24) and connect the fixed beam (10) and the movable beam (20).

5. The battery housing assembly according to claim 4, characterized in that, The mounting hole (24) extends a predetermined length from the edge of the receiving cavity to the center, and the fastener (40) is adjusted to pass through the mounting hole (24) to change the relative fit position between the inclined surfaces.

6. The battery housing assembly according to claim 1, characterized in that, The top end of the movable beam (20) has a second protrusion (25), which protrudes upward from the upper surface of the fixed beam (10). The second protrusion (25) has a disassembly structure (251), through which the movable beam (20) is disassembled from the fixed beam (10).

7. The battery housing assembly according to claim 6, characterized in that, The second protrusion (25) has a hollow structure on its side, which is exposed to the fixing beam (10) and the battery pack (50), and the hollow structure serves as the disassembly structure (251).

8. The battery housing assembly according to claim 1, characterized in that, The angle between the inclined surface and the vertical plane is 15°-75°.

9. The battery housing assembly according to claim 1, characterized in that, Each of the fixed beams (10) is detachably provided with a plurality of movable beams (20), each of the movable beams (20) being used to abut against one of the battery packs (50).

10. A battery pack, characterized in that, The battery pack (50) includes a battery housing assembly according to any one of claims 1 to 9, wherein the battery pack (50) is detachably disposed within the battery housing assembly.

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