Battery pack housing and battery pack

Abstract

The embodiment of the application provides a battery pack shell and a battery pack, and belongs to the technical field of battery sealing. The battery pack shell comprises: a box body, which is used for accommodating a battery cell; a box cover, which is arranged on the box body; at least one of the box body and the box cover is provided with a protruding structure, and at least one of the box body and the box cover is provided with a folding structure; the protruding structure is located between the box body and the box cover to form an accommodating interval between the box body and the box cover; a sealing element is arranged in the accommodating interval to seal the box body and the box cover; the folding structure is surrounded on the outer circumferential side of the sealing element, and the protruding structure is located on the inner circumferential side of the sealing element. The stability of the sealing contact surface of the sealing element to the box body and the box cover is enhanced, so that the sealing reliability of the battery pack under extreme working conditions is improved.

Description

Technical Field

[0001] This application relates to the field of battery sealing technology, and in particular to a battery pack housing and a battery pack. Background Technology

[0002] In the field of new energy vehicles, battery packs must simultaneously meet the dual requirements of resisting external physical impacts (such as high-pressure water flow) and internal high-temperature and high-pressure material impacts to ensure the long-term stable operation of the battery system and the safety of passengers.

[0003] In existing technologies, battery packs use sealing rings as the primary sealing method. After the casing and cover are assembled, the sealing ring forms a contact seal at the connection between the casing and cover by controlling the compression amount and the effective sealing width.

[0004] However, in some cases, it is difficult to ensure the sealing reliability of the battery pack through the sealing ring. Utility Model Content

[0005] This application provides a battery pack housing and a battery pack to solve the problem that existing battery packs are difficult to guarantee sealing reliability through sealing rings in some cases.

[0006] In a first aspect, embodiments of this application provide a battery pack housing, comprising:

[0007] The housing is used to house the battery cells;

[0008] A lid is provided on the box body, and at least one of the box body and the lid has a protruding structure, and at least one of the box body and the lid has a folding structure.

[0009] The protruding structure is located between the box body and the box cover, so that an accommodating gap is formed between the box body and the box cover;

[0010] A sealing element disposed within the receiving interval to seal the housing and the housing lid;

[0011] The folding structure surrounds the outer periphery of the seal, and the protruding structure is located on the inner periphery of the seal.

[0012] In one possible implementation, the battery pack housing provided in this application embodiment has a protruding structure in one of the housing and the cover, which abuts against the other through the protruding structure, so that an accommodating gap is formed between the housing and the cover.

[0013] In one possible implementation, the battery pack housing provided in this application embodiment has a protruding structure located on the wall panel of the housing and adjacent to the side of the wall panel facing the interior of the housing.

[0014] In one possible implementation, the battery pack housing provided in this application embodiment has a protruding structure that is a convex ridge surrounding the periphery of the housing, and the convex ridge is flush with the side of the wall panel facing the interior of the housing.

[0015] In one possible implementation, the battery pack housing provided in this application embodiment has the folding structure disposed on the edge of the cover and located on the outside of the housing.

[0016] In one possible implementation, the battery pack housing provided in this application embodiment has a folding structure that is a flange extending toward the housing;

[0017] The flange extends through the accommodating interval to the shielding portion of the box.

[0018] In one possible implementation, the battery pack housing provided in this application embodiment has a fitting gap between the flange and the housing body, and the fitting gap is in communication with the receiving interval.

[0019] In one possible implementation, the battery pack housing provided in this application embodiment further includes a plurality of connectors, which connect the housing body, the seal and the housing cover.

[0020] In one possible implementation, the battery pack housing provided in this application embodiment has a folding structure with a height greater than or equal to 4.5 mm and less than or equal to 5.5 mm along the height direction of the housing.

[0021] The height of the protrusion is greater than or equal to 2.5 mm and less than or equal to 3.0 mm;

[0022] The height of the seal is the same as the height of the protruding structure.

[0023] Secondly, embodiments of this application provide a battery pack, including the aforementioned battery pack housing and battery cells disposed within the battery pack housing.

[0024] The battery pack housing and battery pack provided in this application embodiment include a casing, a cover, and a seal. At least one of the casing and the cover has a protruding structure, and at least one of the casing and the cover also has a folding structure. The connection between the casing and the cover is achieved through the interlocking of the protruding structure and the folding structure. The seal is disposed between the protruding structure and the folding structure. This allows the seal to seal the connection between the casing and the cover while simultaneously providing multiple layers of protection through the cooperation of the protruding structure and the folding structure. This reduces the direct impact of water flow, high-temperature and high-pressure solid-liquid-gas phase substances, and jet fire on the seal, enhancing the stability of the sealing contact surface between the seal and the casing, thereby improving the sealing reliability of the battery pack under extreme operating conditions. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 This is a schematic diagram of the structure of the battery pack housing provided in an embodiment of this application;

[0027] Figure 2 This is a structural diagram illustrating the assembly of the box body and the box lid;

[0028] Figure 3 This is a schematic diagram illustrating part of the box's structure;

[0029] Figure 4 This is a schematic diagram illustrating part of the structure of the box lid.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - Box body; 110 - Raised structure; 120 - Wall panel; 130 - Accommodation space;

[0032] 200 - Lid; 210 - Folding structure; 211 - Fitting clearance;

[0033] 300 - Seals;

[0034] 400 - Connector; 410 - Connecting hole.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the absence of conflict, the following embodiments and features can be combined with each other.

[0037] In existing technologies, battery packs are typically installed inside the vehicle chassis or body, and must withstand complex operating conditions over long periods. For example, in the event of thermal runaway in the battery system, internal cells may overheat, short-circuit, or be impacted by external forces, triggering the eruption of high-temperature, high-pressure solid-liquid-gas phase substances (such as electrolyte, molten metal, and high-temperature gases) and jet fire. These substances may diffuse through the sealed area between the battery pack housing and the cover during eruption, causing the sealing material to fail, which in turn allows external air to enter the battery pack, accelerating thermal diffusion and even triggering a deflagration. Furthermore, under extreme weather conditions or during routine maintenance (such as heavy rain or high-pressure water jet cleaning), the sealed areas of the battery pack may experience compression deformation or displacement of the sealing rings due to water flow impact, further reducing sealing performance. Therefore, an IPX9K waterproof test is required to ensure the sealing structure can withstand the impact of high-pressure water flow. Thus, the battery pack sealing structure must simultaneously meet the dual requirements of resisting external physical impacts (such as high-pressure water flow) and internal high-temperature, high-pressure substances to ensure the long-term stable operation of the battery system and the safety of occupants.

[0038] In existing battery packs, silicone foam sealing rings are commonly used as the primary sealing method. By controlling the compression amount (typically 2.5~3mm) and effective sealing width, the sealing ring forms a contact seal after the casing and cover are assembled. This design means that the seal between the casing and cover relies on the elastic deformation capability of the sealing element, which fills the gap between the casing and cover under assembly pressure, thus achieving a sealing effect.

[0039] However, the seal itself may experience uneven local compression or displacement due to high-speed water flow impact, damaging the sealing contact surface; and in thermal runaway scenarios, the high-temperature (>1000℃), high-pressure (>1MPa) solid-liquid-gas phase substances or jet fire emitted by the battery cell will directly impact the sealing area, causing the silicone foam to soften, carbonize or even ablate, losing its sealing function.

[0040] To overcome the deficiencies in the prior art, the battery pack housing and battery pack provided in this application embodiment include a casing, a cover, and a seal. A protruding structure is provided on at least one of the casing and the cover, and a folding structure is also provided on at least one of the casing and the cover. The seal is disposed between the protruding structure and the folding structure. This allows the seal to seal the connection between the casing and the cover while simultaneously providing multiple layers of protection through the cooperation of the protruding structure and the folding structure. This reduces the direct impact of water flow, high-temperature and high-pressure solid-liquid-gas phase substances, and jet fire on the seal, enhancing the stability of the sealing contact surface between the seal and the casing, thereby improving the sealing reliability of the battery pack under extreme operating conditions.

[0041] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application embodiment provides a battery pack housing, including:

[0043] Box 100, box 100 is used to house the battery cells;

[0044] A lid 200 is provided on a box body 100. At least one of the box body 100 and the lid 200 is provided with a protruding structure 110, and at least one of the box body 100 and the lid 200 is provided with a folding structure 210. The protruding structure 110 is located between the box body 100 and the lid 200, so that an accommodating gap 130 is formed between the box body 100 and the lid 200.

[0045] A seal 300 is disposed within the receiving interval 130 to seal the housing 100 and the cover 200.

[0046] The folding structure 210 surrounds the outer periphery of the seal 300, and the protruding structure 110 is located on the inner periphery of the seal 300.

[0047] It is understandable that the housing 100 forms the outer shell of the battery pack to house the battery cells and other internal components, providing stable support for the battery cells and ensuring that the battery cells remain in a fixed position within the battery pack, thus preventing damage or performance degradation caused by shaking or displacement during transportation, installation, or use.

[0048] An opening is provided on the housing 100, through which the battery cells and other internal components are installed inside the housing 100. A cover 200 is placed on the housing 100 and covers the opening of the housing 100 to seal the battery pack and protect the internal components.

[0049] A protruding structure 110 is provided on at least one of the housing 100 and the lid 200. At the same time, a folding structure 210 is also provided on at least one of the housing 100 and the lid 200. The housing 100 and the lid 200 are assembled together by the protruding structure 110 and the folding structure 210. The protruding structure 110 forms a receiving gap 130 at the connection between the housing 100 and the lid 200. The receiving gap 130 provides a dedicated installation space for the seal 300 so that the seal 300 filled in the receiving gap 130 forms a more reliable sealing barrier. The folding structure 210 surrounds the outer periphery of the seal 300. Compared to the sealing method where the housing 100 and the cover 200 are directly attached to and pressed together with the sealing element 300, the sealing element 300 is set within the receiving interval 130 formed by the protruding structure 110, which makes the receiving interval 130 between the housing 100 and the cover 200 relatively stable, preventing the sealing element 300 from deforming due to the squeezing, twisting or relative displacement of the housing 100 and the cover 200, and reducing the sealing failure caused by uneven local pressure.

[0050] The raised structure 110 and the folding structure 210 increase the contact area and the tightness of the connection between the housing 100 and the cover 200, making the connection between the two more robust and improving the overall structural stability of the battery pack casing. When the battery pack is subjected to external forces such as vibration and impact, this interlocking structure can effectively disperse stress and reduce the possibility of separation between the housing 100 and the cover 200.

[0051] A seal 300 is disposed between the raised structure 110 and the folded structure 210, positioning the seal 300 at the connection between the housing 100 and the cover 200 to achieve a contact seal. The seal 300 fills the gap between the raised structure 110 and the folded structure 210, while also providing physical protection for the seal 300 from external moisture, dust, and gases, preventing them from entering the battery pack and protecting the cells and other internal components from environmental influences. It also prevents electrolytes and other substances inside the battery pack from leaking to the outside, avoiding damage to the surrounding environment and equipment.

[0052] Thus, during the battery packaging process, the seal 300 is compressed and positioned between the housing 100 and the cover 200. After assembly, the housing 100 and the cover 200 are joined by the protruding structure 110 and the folding structure 210. The geometry of the protruding structure 110 and the coverage area of ​​the folding structure 210 work together to form a physical barrier, dispersing external or internal impact energy and covering the seal 300, altering the flow path of impacting substances and reducing direct impact on the seal 300. Simultaneously, the protruding structure 110 and the folding structure 210 maintain stable contact after assembly, preventing displacement or deformation caused by impact. This ensures the relative position and shape stability of the seal 300 between the protruding structure 110 and the folding structure 210, achieving multi-level protection of the sealed area.

[0053] The battery pack housing provided in this embodiment includes a housing 100, a cover 200, and a seal 300. A protruding structure 110 is provided on at least one of the housing 100 and the cover 200, and a folding structure 210 is also provided on at least one of the housing 100 and the cover 200. The seal 300 is disposed between the protruding structure 110 and the folding structure 210. In this way, while the seal 300 compresses itself to seal the connection between the housing 100 and the cover 200, the cooperation of the protruding structure 110 and the folding structure 210 also provides multiple layers of protection for the seal 300, reducing the direct impact of water flow, high-temperature and high-pressure solid-liquid-gas phase substances, and jet fire on the seal 300. This enhances the stability of the sealing contact surface between the seal 300 and the housing 100 and the cover 200, thereby improving the sealing reliability of the battery pack under extreme operating conditions.

[0054] In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 As shown, in the box body 100 and the box cover 200, one of the boxes is provided with a protruding structure 110, which abuts against the other to form an accommodating gap 130 between the box body 100 and the box cover 200.

[0055] It is understandable that by making the protruding structure 110 abut against the box body 100 or the box cover 200 to form an accommodating gap, the minimum distance between the box body 100 and the box cover 200 is effectively limited. While ensuring that the sealing element 300 stably seals the box body 100 and the box cover 200, it prevents the box body 100 and the box cover 200 from excessively squeezing the sealing element 300, which would cause the sealing element 300 to deform and fail.

[0056] In specific implementation, refer to Figure 2 , Figure 3 and Figure 4 As shown, the protruding structure 110 is located on the wall panel 120 of the housing 100 and is adjacent to the side of the wall panel 120 facing the interior of the housing 100.

[0057] A raised structure 110 is provided on the inner side of the wall panel 120 of the housing 100, so that the raised structure 110 is close to the battery cell and abuts against the housing cover 200, thereby forming an effective physical barrier between the seal 300 and the battery cell. In the event of thermal runaway of the battery cell, the raised structure 110 can be used to block the heat generated by the battery cell from being transferred to the seal 300, so that the seal 300 can be in a relatively stable temperature environment, extending the service life of the seal 300 and ensuring the reliability of the seal.

[0058] For example, in this embodiment, a protruding structure 110 is provided only on the inner side of the wall panel 120 of the box 100. In other embodiments, a protruding structure 110 may also be provided on the box cover 200 to abut against the wall panel 120 of the box 100. This application does not limit this.

[0059] In addition, multiple raised structures 110 may be provided at intervals along the connection between the housing 100 and the cover 200 to form multiple rigid sealing protections, and this application does not limit this.

[0060] Furthermore, referring to Figure 2 and Figure 3 As shown, the protruding structure 110 is a protruding ridge that surrounds the periphery of the box 100, and the protruding ridge is flush with the side of the wall panel 120 facing the inside of the box 100.

[0061] It is understandable that the protruding ridge increases the moment of inertia of the wall panel 120 of the box 100, thereby improving the rigidity of the box 100, making the box 100 less prone to deformation when subjected to external forces, maintaining its original shape and dimensional accuracy, and stabilizing the position of the accommodating gap 130 between the box 100 and the box cover 200 and the sealing element 300 within the accommodating gap 130.

[0062] The raised ridges are arranged around the perimeter of the housing 100 and flush with the side of the wall panel 120 facing inwards from the housing 100, allowing the raised ridges to form a continuous sealing path when mated with the housing cover 200. The sealing element 300 is arranged along the shape of the raised ridges, making the seal more complete and reliable. Compared to the dispersed raised structure 110, the continuous raised ridges can better constrain the sealing element 300, allowing it to distribute pressure evenly when compressed, thereby improving the sealing effect.

[0063] Furthermore, to ensure that the protruding ribs on the box body 100 can stably abut against the box cover 200, a positioning groove can be provided on the box cover 200, allowing the protruding ribs to partially engage within the positioning groove. This prevents the box body 100 and the box cover 200 from shifting positions and improves the reliability of the seal between the protruding ribs and the box cover 200. Similarly, when a protruding rib is provided on the box cover 200, a corresponding positioning groove can also be provided on the box body 100; this application does not impose any limitations on this.

[0064] In specific implementation, the protrusion can be set as a rectangular protrusion, a trapezoidal protrusion, a wedge-shaped protrusion, or a stepped protrusion; this application does not impose any restrictions on this.

[0065] Furthermore, in some embodiments, reference is made to Figure 2 and Figure 4 As shown, the folding structure 210 is provided on the edge of the lid 200 and located on the outside of the box body 100.

[0066] The folding structure 210 is located on the edge of the cover 200 and on the outside of the enclosure 100, which is equivalent to adding an extra sealing protection to the outside of the original sealing structure between the cover 200 and the enclosure 100. When the cover 200 and the enclosure 100 are closed, the folding structure 210 can further prevent external dust, moisture, gas and other substances from entering the interior of the enclosure 100, effectively protecting the key components such as the battery cells inside the enclosure 100 from the influence of external environmental factors.

[0067] Furthermore, when the folding structure 210 is installed on the cover 200 and blocks the accommodating gap 130, the folding structure 210 can extend downward toward the box body 100. When high-pressure water flow impacts the accommodating gap 130 between the box body 100 and the cover 200, the folding structure 210 can be used for protection.

[0068] In specific implementation, refer to Figure 2 and Figure 4 As shown, the folding structure 210 is a flange extending toward the box body 100;

[0069] The flange extends from the accommodating interval 130 to the shielding portion of the box 100.

[0070] The flange extending toward the housing 100 provides clear positioning guidance for the assembly of the lid 200 and the housing 100. By considering the relative position of the flange and the wall panel 120 of the housing 100, the lid 200 can be quickly and accurately placed onto the housing 100, greatly improving assembly efficiency. At the same time, the fit clearance avoids assembly difficulties caused by dimensional tolerances and other issues.

[0071] The flange extends to the shielded portion of the housing 100, which increases the mating area between the flange and the housing 100, further enhancing the protective effect of the flange on the seal 300, and improving the stability and convenience of assembling the housing 100 and the cover 200.

[0072] Furthermore, referring to Figure 2 and Figure 4 As shown, there is a fitting gap 211 between the flange and the box body 100, and the fitting gap 211 is connected to the receiving interval 130.

[0073] Furthermore, the fitting gap 211 between the flange and the wall panel 120 of the housing 100 further forms a tortuous sealing path. When external dust, moisture, gas, etc. attempt to enter the interior of the housing 100, they need to bypass the flange and pass through the fitting gap, increasing the difficulty for external water to intrude into the interior of the housing 100.

[0074] In practice, the flange can extend parallel to the wall panel 120 of the box 100 along the height direction of the box 100, or it can extend at an angle relatively close to the wall panel 120, or it can extend at an angle relatively far away from the wall panel 120. This application does not limit this.

[0075] The mating gap 211 is connected to the receiving interval 130, which can provide deformation space for the seal 300 in the receiving interval 130 to a certain extent. This buffers the slight deformation of the box body 100 and box cover 200 caused by factors such as temperature changes and external impacts, as well as the compression deformation of the seal 300. This prevents the seal 300 from being damaged by excessive compression or stretching, and ensures the stability of the sealing contact surface between the seal 300 and the box body 100 and box cover 200.

[0076] Furthermore, in some embodiments, reference is made to Figure 2 , Figure 3 and Figure 4 As shown, the battery pack housing also includes multiple connectors 400, which connect the housing 100, the seal 300, and the cover 200.

[0077] The connector 400 passes through the connecting hole 410 to tightly connect the housing 100 and the cover 200 together. When the battery pack is subjected to external forces such as vibration and impact, it can effectively disperse stress, reduce the possibility of separation between the housing 100 and the cover 200, and improve the overall structural stability of the battery pack housing.

[0078] The connecting hole 410 communicates with the receiving interval 130. While connecting the housing 100 and the cover 200, the connector 400 helps to maintain the stability of the receiving interval 130 between the housing 100 and the cover 200, and allows the connector 400 to be inserted into the seal 300. This makes the position of the seal 300 in the receiving interval 130 more fixed, preventing the seal 300 from deforming or shifting due to the relative displacement of the housing 100 and the cover 200, thereby ensuring the reliability of the seal.

[0079] Meanwhile, multiple connectors 400 are evenly distributed around the housing 100 and the cover 200, which enables the seal 300 to distribute pressure evenly when squeezed, thereby avoiding seal failure caused by uneven local pressure. This allows the seal 300 to better fill the gap between the raised structure 110 and the folded structure 210, achieving a more reliable sealing effect.

[0080] The connector 400 can be a bolt, rivet, or clip, etc., and this application does not limit it.

[0081] Furthermore, in some embodiments, the height of the folding structure 210 along the height direction of the housing 100 is greater than or equal to 4.5 mm and less than or equal to 5.5 mm;

[0082] The height of the protrusion 110 is greater than or equal to 2.5 mm and less than or equal to 3.0 mm;

[0083] The height of the seal 300 is the same as the height of the raised structure 110.

[0084] The folding structure 210, with a height between 4.5-5.5 mm (e.g., 5.0 mm), provides effective protection for the sealed area of ​​the battery pack, reducing the direct impact of external water flow on the seal 300. The raised structure 110, with a height between 2.5-3.0 mm, matches the height of the compressed seal 300, ensuring good sealing performance of the seal 300 under compression. The accommodating gap 130 formed by the raised structure 110 provides suitable installation space for the seal 300, allowing it to evenly fill the gap when compressed, ensuring stable sealing contact with the housing 100 and the cover 200. When the battery pack is subjected to external forces such as vibration and impact, the seal 300 is less prone to displacement or uneven local compression, thereby improving the reliability of the seal.

[0085] In addition, this application embodiment also provides a battery pack, including the above-mentioned battery pack housing and battery cells disposed within the battery pack housing.

[0086] The battery pack casing has been described in the above embodiments and will not be repeated here.

[0087] The battery pack provided in this application embodiment includes a housing 100, a cover 200, and a seal 300. A protruding structure 110 is provided on at least one of the housing 100 and the cover 200, and a folding structure 210 is also provided on at least one of the housing 100 and the cover 200. The connection between the housing 100 and the cover 200 is fitted together by the protruding structure 110 and the folding structure 210. The seal 300 is disposed between the protruding structure 110 and the folding structure 210. In this way, while the seal 300 compresses itself to seal the connection between the housing 100 and the cover 200, the raised structure 110 and the folding structure 210 can also provide multiple layers of protection for the seal 300, reducing the direct impact of water flow, high temperature and high pressure solid-liquid-gas phase substances and jet fire on the seal 300, enhancing the stability of the sealing contact surface between the seal 300 and the housing 100 and the cover 200, and improving the sealing reliability of the battery pack under extreme conditions.

[0088] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0089] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0090] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0091] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack housing, characterized in that, include: A housing (100) for accommodating battery cells; A lid (200) is provided on the box body (100). At least one of the box body (100) and the box cover (200) is provided with a protruding structure (110), and at least one of the box body (100) and the box cover (200) is provided with a folding structure (210). The protruding structure (110) is located between the box body (100) and the box cover (200) to form an accommodating gap (130) between the box body (100) and the box cover (200). A sealing element (300) is disposed within the receiving interval (130) to seal the housing (100) and the housing cover (200). The folding structure (210) surrounds the outer periphery of the seal (300), and the protruding structure (110) is located on the inner periphery of the seal (300).

2. The battery pack housing according to claim 1, characterized in that, In the box body (100) and the box cover (200), one of the protruding structures (110) abuts against the other through the protruding structure (110) to form an accommodating gap (130) between the box body (100) and the box cover (200).

3. The battery pack housing according to claim 2, characterized in that, The protruding structure (110) is located on the wall panel (120) of the housing (100) and is adjacent to the side of the wall panel (120) facing the interior of the housing (100).

4. The battery pack housing according to claim 3, characterized in that, The protruding structure (110) is a protruding ridge that is arranged around the periphery of the box (100), and the protruding ridge is flush with the side of the wall panel (120) facing the inside of the box (100).

5. The battery pack housing according to claim 2, characterized in that, The folding structure (210) is disposed on the edge of the lid (200) and located on the outside of the box body (100).

6. The battery pack housing according to claim 2, characterized in that, The folding structure (210) is a flange extending toward the box body (100); The flange extends through the receiving interval (130) to the shielding portion of the box (100).

7. The battery pack housing according to claim 6, characterized in that, The flange and the box body (100) have a fitting gap (211), and the fitting gap (211) is connected to the accommodating interval (130).

8. The battery pack housing according to any one of claims 2-7, characterized in that, It also includes a plurality of connectors (400) that connect the housing (100), the seal (300) and the cover (200).

9. The battery pack housing according to any one of claims 1-7, characterized in that, Along the height direction of the box (100), the height of the folding structure (210) is greater than or equal to 4.5 mm and less than or equal to 5.5 mm; The height of the protruding structure (110) is greater than or equal to 2.5 mm and less than or equal to 3.0 mm; The height of the seal (300) is the same as the height of the protrusion (110).

10. A battery pack, characterized in that, It includes the battery pack housing as described in any one of claims 1-9 and the battery cells disposed within the battery pack housing.

Images