A box and a battery pack

Abstract

The utility model discloses a kind of box and battery pack, box includes end cover, frame and sealing element, end cover is set to the side of frame, frame includes first base body, at least one second base body and third base body, first base body is opened with first glue groove to the side wall of end cover, second base body is opened with second glue groove and third glue groove, second glue groove is opened in the side wall of second base body towards end cover, third glue groove is opened in the side wall of second base body towards first base body, third base body is opened with fourth glue groove and fifth glue groove, fourth glue groove is opened in the side wall of third base body towards end cover, fifth glue groove is opened in the side wall of third base body towards second base body, sealing element is filled in first glue groove, second glue groove, third glue groove, fourth glue groove and fifth glue groove.Box and battery pack aim to solve how to keep stable sealing performance under the condition of assembly tolerance fluctuation technical problem.

Description

Technical Field

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

[0002] With the rapid development of new energy vehicles, the requirements for the safety and reliability of battery systems are constantly increasing, especially in the design of battery pack structures, where the requirements for sealing performance are becoming increasingly stringent. During operation, battery packs need to resist the intrusion of external moisture, dust, and impurities, while also withstanding the stress caused by temperature changes and mechanical vibrations. Therefore, their sealing structure directly affects the battery's lifespan and safety performance.

[0003] Currently, the most common sealing solution for battery systems is compression foam sealing. This solution involves placing foam at the joints of the casing, and achieving a seal through compression deformation during assembly. However, this method has shortcomings: it requires strict control of the compression ratio, and even slight deviations in assembly tolerances can lead to seal failure. Utility Model Content

[0004] One objective of this invention is to provide a housing and battery pack that address the technical problem of maintaining stable sealing performance under conditions of fluctuating assembly tolerances.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a solution: a box body, comprising: end caps;

[0006] A frame, with an end cap disposed on one side of the frame, the frame including a first base, at least one second base and a third base, the second base being disposed between the first base and the third base, the first base having a first adhesive groove on its side wall facing the end cap, the second base having a second adhesive groove and a third adhesive groove that communicate with each other, the second adhesive groove being on the side wall facing the end cap, the third adhesive groove being on the side wall facing the first base, the third base having a fourth adhesive groove and a fifth adhesive groove that communicate with each other, the fourth adhesive groove being on the side wall facing the end cap, the fifth adhesive groove being on the side wall facing the second base, the first adhesive groove, the second adhesive groove and the fourth adhesive groove being communicated with each other; The sealing element has a continuous structure and is filled in the first, second, third, fourth and fifth adhesive grooves.

[0007] Optionally, the first substrate has a first hole on its sidewall facing the end cap; the first adhesive groove includes a first section and a second section, the first section and the second section are connected, and the second section is disposed around the first hole; and / or, The second substrate has a first hole on its side wall facing the end cap; the second adhesive groove includes a first section and a second section, the first section and the second section are connected, and the second section is arranged around the first hole; and / or, The third substrate has a first hole on its side wall facing the end cap, and the fourth adhesive groove includes a first section and a second section, which are connected and the second section is arranged around the first hole.

[0008] Optionally, the first and second segments are connected by an arc.

[0009] Optionally, the second substrate has a second hole on its sidewall facing the first substrate, and the third adhesive groove includes a third segment and a fourth segment, which are connected, with the fourth segment surrounding the second hole; and / or, The third substrate has a second hole on its sidewall facing the first substrate. The fifth adhesive groove includes a third section and a fourth section, which are connected. The fourth section is arranged around the second hole.

[0010] Optionally, the third and fourth segments are connected by an arc.

[0011] Optionally, the inner walls of the second and third glue tanks are connected by an arc; and / or, the inner walls of the fourth and fifth glue tanks are connected by an arc.

[0012] Optionally, the depth of the first adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the second adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the third adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fourth adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fifth adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm.

[0013] Optionally, the width of the seal is D1, the width of the first adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the second adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the third groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the fourth adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the fifth groove is D2, and 0.8 ≤ D1 / D2.

[0014] Optionally, 8 mm ≤ D2 ≤ 12 mm.

[0015] In a second aspect, a battery pack includes a module and a housing as described in any of the first aspects, wherein the module is assembled inside the housing.

[0016] The beneficial effects of this utility model are as follows: The housing includes an end cap, a frame, and a seal. The end cap is disposed on one side of the frame. The frame includes a first base, at least one second base, and a third base. The second base is disposed between the first base and the third base. A first adhesive groove is formed on the side wall of the first base facing the end cap. The second base has interconnected second and third adhesive grooves. The second adhesive groove is formed on the side wall of the second base facing the end cap, and the third adhesive groove is formed on the side wall of the second base facing the first base. The third base has interconnected fourth and fifth adhesive grooves. The fourth adhesive groove is formed on the side wall of the third base facing the end cap, and the fifth adhesive groove is formed on the side wall of the third base facing the second base. The first, second, and fourth adhesive grooves are interconnected. The seal is a continuous structure and is filled in the first, second, third, fourth, and fifth adhesive grooves.

[0017] In practical applications, this technical solution involves setting a first, second, third, fourth, and fifth adhesive groove on the first, second, and third substrates of the frame, respectively, and connecting these grooves to each other. This allows the seal to fill all the grooves in a continuous structure, achieving the integrity and continuity of the sealing path of the housing. The advantage of this design is that the seal does not need to be segmented, avoiding the leakage risks that easily occur at the joints in traditional segmented seals, and improving the overall sealing reliability. Simultaneously, the interconnection of the adhesive grooves between the second and third substrates allows the sealing path to extend continuously along multiple sidewalls of the frame, achieving three-dimensional sealing, suitable for three-dimensional sealing requirements. Furthermore, after the seal is filled into all the grooves, it can be uniformly compressed during the assembly of the end cap and the frame. This not only reduces the dependence on compression ratio accuracy and the impact of assembly tolerances on the sealing effect, but also reduces the sealing width occupied, improving the utilization rate of the internal space of the housing, making the housing more suitable for the compact design requirements of high-energy-density battery systems. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the box provided in an embodiment of the present utility model; Figure 2 This is a partially enlarged schematic diagram provided by an embodiment of the present invention to show the first glue tank, the second glue tank, and the fourth glue tank; Figure 3 This is a structural schematic diagram of the box provided in an embodiment of the present utility model; Figure 4 This is provided by the embodiment of the present utility model. Figure 3 A magnified view of a portion of region A in the middle; Figure 5 This is a structural schematic diagram of the sealing element provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the box provided in this embodiment of the utility model; Figure 7 This is provided by the embodiment of the present utility model. Figure 6 A magnified view of a portion of region B in the middle; Figure 8 This is a structural schematic diagram of the box provided in an embodiment of the present utility model; Figure 9 This is provided by the embodiment of the present utility model. Figure 8 A magnified view of a portion of region C.

[0020] Explanation of icon numbers: 20. End cap; 30. Frame; 31. First base; 311. First glue groove; 3111. First section; 3112. Second section; 312. First hole; 32. Second base; 321. Second glue groove; 322. Third glue groove; 3221. Third section; 3222. Fourth section; 323. Second hole; 33. Third base; 331. Fourth glue groove; 332. Fifth glue groove; 40. Seal; 41. First sealing part; 42. Second sealing part; 43. Third sealing part. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 5 As shown, Figure 1 This is a structural schematic diagram of the box provided in an embodiment of the present utility model. Figure 2 This is a partially enlarged schematic diagram provided by an embodiment of the present invention to illustrate the first glue tank 311, the second glue tank 321, and the fourth glue tank 331. Figure 3 This is a structural schematic diagram of the box provided in an embodiment of the present utility model. Figure 4 This is provided by the embodiment of the present utility model. Figure 3 A magnified view of a portion of region A in the middle. Figure 5 This is a schematic diagram of the structure of the sealing element 40 provided in this embodiment of the utility model.

[0023] In a first aspect, the present invention provides a battery pack, which includes a module and a housing, with the module assembled inside the housing.

[0024] Specifically, the housing includes an end cap 20, a frame 30, and a sealing element 40. The end cap 20 is disposed on one side of the frame 30. The frame 30 includes a first base 31, at least one second base 32, and a third base 33. The second base 32 is disposed between the first base 31 and the third base 33. The first base 31 has a first adhesive groove 311 on its side wall facing the end cap 20. The second base 32 has a second adhesive groove 321 and a third adhesive groove 322 that communicate with each other. The second adhesive groove 321 is located on the side wall of the second base 32 facing the end cap 20, and the third adhesive groove 322 is located on the side wall of the second base 32 facing the end cap 20. On the side wall of the second substrate 32 facing the first substrate 31, the third substrate 33 has a fourth adhesive groove 331 and a fifth adhesive groove 332 that are interconnected. The fourth adhesive groove 331 is opened on the side wall of the third substrate 33 facing the end cap 20, and the fifth adhesive groove 332 is opened on the side wall of the third substrate 33 facing the second substrate 32. The first adhesive groove 311, the second adhesive groove 321 and the fourth adhesive groove 331 are interconnected. The sealing element 40 has a continuous structure and is filled in the first adhesive groove 311, the second adhesive groove 321, the third adhesive groove 322, the fourth adhesive groove 331 and the fifth adhesive groove 332.

[0025] In practical applications, this technical solution involves setting a first adhesive groove 311, a second adhesive groove 321, a third adhesive groove 322, a fourth adhesive groove 331, and a fifth adhesive groove 332 on the first substrate 31, the second substrate 32, and the third substrate 33 of the frame 30, respectively, and connecting these grooves to each other. This allows the seal 40 to fill all the grooves in a continuous structure, achieving the integrity and continuity of the sealing path of the enclosure. The advantage of this design is that the seal 40 does not need to be segmented, avoiding the leakage risks that easily occur at the joints in traditional segmented seals, and improving the overall sealing reliability. Simultaneously, the interconnection of the adhesive grooves between the second substrate 32 and the third substrate 33 allows the sealing path to extend continuously along multiple sidewalls of the frame 30, thereby achieving three-dimensional sealing, suitable for three-dimensional sealing requirements. In addition, after the seal 40 is filled in all the glue grooves, it can be evenly pressed during the assembly of the end cap 20 and the frame 30. This not only reduces the dependence on the compression ratio accuracy and reduces the impact of assembly tolerance on the sealing effect, but also reduces the sealing width occupation, improves the utilization rate of the internal space of the box, and makes the box more suitable for the compact design requirements of high energy density battery systems.

[0026] During assembly, sealant is first filled into the fifth adhesive groove 332. After aligning the second substrate 32 and the third substrate 33, bolts and nuts are used to secure the assembly in the second hole 323. During the tightening process, the axial pressure applied by the bolts and nuts compresses the sealant in the fifth adhesive groove 332 and causes it to flow evenly along the groove wall, thereby forming a first sealing part 41 at the joint interface between the second substrate 32 and the third substrate 33, ensuring that the joint at this part is completely sealed.

[0027] Subsequently, sealing putty is filled into the third adhesive groove 322, and the first substrate 31 and the second substrate 32 are aligned and fixed by bolts and nuts engaging the second hole 323. At this time, the tightening action of the bolts and nuts further compacts the putty in the third adhesive groove 322 and connects it with the first sealing part 41 formed in the previous step, forming a continuous second sealing part 42, effectively sealing the joint between the first substrate 31 and the second substrate 32.

[0028] After sealing the two substrates, sealant is sequentially filled into the first groove 311, the second groove 321, and the fourth groove 331, and the end cap 20 is then completely placed over the corresponding sidewalls of the first substrate 31, the second substrate 32, and the third substrate 33. This step is achieved by securing the end cap 20 with bolts and nuts in the first hole 312. During the tightening of the end cap 20, the sealant in the first groove 311, the second groove 321, and the fourth groove 331 is simultaneously compressed and filled, communicating with the previously formed first sealing part 41 and second sealing part 42, ultimately forming the third sealing part 43 that runs through the entire joint of the housing.

[0029] By using this method of gradually filling the sealant into sections, assembling in stages, and relying on the bolts and nuts to provide stable clamping force with the first hole 312 and the second hole 323, it is ensured that each section of sealant is uniformly compacted during assembly and fully connected with adjacent sealing sections, avoiding localized insufficient sealing or breakage. The final sealing element 40 is a continuous closed structure in three-dimensional space, with highly reliable sealing performance. It can effectively resist the influence of complex working conditions such as moisture, dust, and vibration impact, significantly improving the overall durability and service life of the enclosure.

[0030] In this embodiment, the sealing element 40 is a continuous sealing strip formed by curing liquid sealant, which has good resistance to high and low temperatures and aging. In other embodiments of this application, the sealing element 40 can be solidified hot melt adhesive or cured foamed sealant.

[0031] In one embodiment, see Figure 2 and Figure 4The first substrate 31 has a first hole 312 on its sidewall facing the end cap 20. The first adhesive groove 311 includes a first section 3111 and a second section 3112, which are connected. The second section 3112 surrounds the first hole 312; and / or, The second substrate 32 has a first hole 312 on its side wall facing the end cap 20. The second adhesive groove 321 includes a first section 3111 and a second section 3112, which are connected. The second section 3112 is arranged around the first hole 312; and / or, The third substrate 33 has a first hole 312 on its side wall facing the end cap 20. The fourth glue groove 331 includes a first section 3111 and a second section 3112. The first section 3111 and the second section 3112 are connected. The second section 3112 is arranged around the first hole 312.

[0032] The structures of the first glue tank 311, the second glue tank 321 and the fourth glue tank 331 are similar, so the second glue tank 321 will be used as an example for explanation.

[0033] In practical applications, the second adhesive groove 321 includes a first section 3111 and a second section 3112 connected thereto, wherein the second section 3112 is arranged circumferentially around the first hole 312. The first hole 312 is used to connect the first base 31, the second base 32, and the third base 33. When assembling the end cap 20, the fasteners pass through the first hole 312 to complete the overall fixation of the frame 30. By forming a surrounding second section 3112 adhesive groove around the first hole 312, the seal 40 can form a continuous closed structure around the hole after filling, effectively preventing the hole from becoming a weak point in the seal. Compared with the traditional method of arranging the seal 40 only in a straight adhesive groove, this structure ensures that the hole periphery seal remains intact even under the stress caused by bolt pre-tightening, frame 30 connection, or subsequent thermal expansion and contraction, thereby improving the overall protection performance and long-term reliability of the enclosure in environments with moisture, dust, and impurities.

[0034] Further, see Figure 4 The first segment 3111 and the second segment 3112 are connected by an arc.

[0035] In practical applications, by connecting the first segment 3111 and the second segment 3112 with an arc, a smooth transition structure can be formed at the bend of the glue groove. Compared with the traditional right-angle connection design of the glue groove, the arc connection can significantly reduce the stress concentration generated when the seal 40 bends at this point, avoiding the risk of breakage or insufficient rebound due to excessive local stress on the seal 40. At the same time, the arc connection also makes the seal 40 more evenly stressed during filling and compression, ensuring the continuity and fit of the glue strip, thereby improving the reliability of the entire glue groove sealing path and further improving the sealing effect and long-term service life of the box.

[0036] In one embodiment, see Figure 4 The second substrate 32 has a second hole 323 on its sidewall facing the first substrate 31. The third adhesive groove 322 includes a third segment 3221 and a fourth segment 3222, which are connected. The fourth segment 3222 surrounds the second hole 323; and / or, The third substrate 33 has a second hole 323 on its sidewall facing the first substrate 31. The fifth adhesive groove 332 includes a third section 3221 and a fourth section 3222. The third section 3221 and the fourth section 3222 are connected. The fourth section 3222 is arranged around the second hole 323.

[0037] In practical applications, the second hole 323 is used to connect the end cap 20 and the frame 30. By opening the second hole 323 on the side wall of the second base 32 or the third base 33 facing the first base 31, and by arranging the fourth segment 3222 of the third adhesive groove 322 or the fifth adhesive groove 332 around the second hole 323, a continuous sealing path can be formed around the second hole 323. The second hole 323 is mainly used to connect the first base 31 and the second base 32 or the second base 32 and the third base 33. There are often weak points in the seal at this connection position. By arranging the surrounding adhesive groove segment around the second hole 323 and communicating with the third segment 3221, the seal 40 forms a closed loop at this point, effectively blocking the risk of external moisture or dust seeping into the housing along the connection hole. In addition, the glue groove as a whole forms a continuous sealing network with the first glue groove 311, the second glue groove 321 and the fourth glue groove 331. Even when the enclosure is subjected to mechanical vibration or temperature changes for a long time, the sealing performance of the connection parts can remain stable, thereby improving the overall protection level and reliability of the enclosure.

[0038] Further, see Figure 4 The third segment 3221 and the fourth segment 3222 are connected by an arc.

[0039] In practical applications, by using an arc connection between the third segment 3221 and the fourth segment 3222, the transition of the adhesive groove at the corner is smooth, avoiding stress concentration problems caused by right angles or sharp corners. During the assembly and use of the enclosure, the arc transition can reduce the tensile and shear stress on the seal 40 at the corner, reducing the risk of damage or detachment of the seal 40 due to local deformation or fatigue. At the same time, the arc connection also makes it easier for the sealant to fill the corner area evenly during injection or molding, preventing air gaps or unfilled areas, thereby improving the continuity and stability of the overall seal, and enhancing the sealing reliability and protective performance of the enclosure under long-term operation and multiple working conditions.

[0040] In one embodiment, reference is made to Figure 6 and Figure 7The inner walls of the second glue groove 321 and the third glue groove 322 are connected by an arc; and / or, the inner walls of the fourth glue groove 331 and the fifth glue groove 332 are connected by an arc.

[0041] In practical applications, by employing an arc-shaped connection structure between the inner walls of the second and third adhesive grooves 321 and 322, and between the inner walls of the fourth and fifth adhesive grooves 331 and 332, a smooth transition surface can be formed at the intersection of the two grooves, avoiding sharp angles at the intersection point. This reduces the risk of damage or stress cracking of the sealant 40 due to stress concentration during assembly and sealant filling. The arc transition also guides the smooth distribution of the sealant during flow and curing, reducing air bubble retention and dead zone areas, ensuring a continuous and complete sealing path. This design further enhances the durability and reliability of the sealing structure, maintaining a stable sealing effect even under long-term thermal expansion and contraction and vibration conditions.

[0042] In one embodiment, reference is made to Figure 7 The depth of the first adhesive groove 311 is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the second adhesive groove 321 is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the third adhesive groove 322 is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fourth adhesive groove 331 is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fifth adhesive groove 332 is H1, where 1 mm ≤ H1 ≤ 3 mm.

[0043] In practical applications, by uniformly limiting the depths of the first adhesive groove 311, the second adhesive groove 321, the third adhesive groove 322, the fourth adhesive groove 331, and the fifth adhesive groove 332 to a range of 1 mm to 3 mm, the requirements for effective filling and curing of the sealant can be met while avoiding material waste and increased assembly difficulty caused by excessively deep grooves, and also avoiding insufficient sealant filling and impact on sealing performance due to excessively shallow grooves. This depth range allows the sealant to form a stable and continuous sealing layer after pressure is applied, and maintains good adhesion and sealing effect in environments of thermal expansion and contraction or vibration, thus balancing the requirements for sealing reliability and lightweight structure, while improving processing consistency and assembly convenience.

[0044] In one embodiment, reference is made to Figure 8 and Figure 9 The width of the seal 40 is D1, the width of the first adhesive groove 311 is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal 40 is D1, the width of the second adhesive groove 321 is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal 40 is D1, the width of the third adhesive groove 322 is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal 40 is D1, the width of the fourth adhesive groove 331 is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal 40 is D1, the width of the fifth adhesive groove 332 is D2, and 0.8 ≤ D1 / D2.

[0045] In practical applications, by limiting the ratio of the width D1 of the seal 40 to the corresponding groove width D2 to no less than 0.8, it can be ensured that the seal 40 can fully conform to the groove wall within the groove, thereby forming a continuous and uniform sealing surface after the end cap 20 is assembled. This avoids local gaps or sealing dead angles caused by the seal 40 being too narrow. Simultaneously, this proportional relationship also prevents the seal 40 from being too wide, which could lead to assembly difficulties or deformation due to compression, thus balancing sealing reliability and assembly efficiency. This structural design effectively improves the sealing performance of the housing under conditions of moisture, dust intrusion, and pressure fluctuations, thereby enhancing the safety and durability of the battery system.

[0046] In this embodiment, 8 mm ≤ D2 ≤ 12 mm.

[0047] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0048] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0049] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A box, characterized in that, include: End cap; A frame, wherein the end cap is disposed on one side of the frame, the frame includes a first base, at least one second base, and a third base, the second base being disposed between the first base and the third base, the first base having a first adhesive groove on its side wall facing the end cap, the second base having a second adhesive groove and a third adhesive groove that communicate with each other, the second adhesive groove being on the side wall facing the end cap, the third adhesive groove being on the side wall facing the first base, the third base having a fourth adhesive groove and a fifth adhesive groove that communicate with each other, the fourth adhesive groove being on the side wall facing the end cap, the fifth adhesive groove being on the side wall facing the second base, and the first adhesive groove, the second adhesive groove, and the fourth adhesive groove communicating with each other; A sealing element, wherein the sealing element is a continuous structure and is filled in the first adhesive groove, the second adhesive groove, the third adhesive groove, the fourth adhesive groove and the fifth adhesive groove.

2. The housing according to claim 1, characterized in that, The first substrate has a first hole on its sidewall facing the end cap; the first adhesive groove includes a first section and a second section, the first section and the second section are connected, and the second section is arranged around the first hole; and / or, The second substrate has a first hole on its sidewall facing the end cap; the second adhesive groove includes a first section and a second section, the first section and the second section are connected, and the second section is arranged around the first hole; and / or, The third substrate has a first hole on its side wall facing the end cap, and the fourth adhesive groove includes a first section and a second section, the first section and the second section are connected, and the second section is arranged around the first hole.

3. The housing according to claim 2, characterized in that, The first segment and the second segment are connected by an arc.

4. The housing according to claim 1, characterized in that, The second substrate has a second hole on its sidewall facing the first substrate; the third adhesive groove includes a third segment and a fourth segment, the third segment and the fourth segment are connected, and the fourth segment is arranged around the second hole; and / or, The third substrate has a second hole on its sidewall facing the first substrate. The fifth adhesive groove includes a third section and a fourth section, which are connected. The fourth section is arranged around the second hole.

5. The housing according to claim 4, characterized in that, The third and fourth segments are connected by an arc.

6. The housing according to claim 1, characterized in that, The inner wall of the second glue tank and the inner wall of the third glue tank are connected by an arc; and / or, the inner wall of the fourth glue tank and the inner wall of the fifth glue tank are connected by an arc.

7. The housing according to claim 1, characterized in that, The depth of the first adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the second adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the third adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fourth adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm; and / or, The depth of the fifth adhesive groove is H1, where 1 mm ≤ H1 ≤ 3 mm.

8. The housing according to claim 1, characterized in that, The width of the seal is D1, the width of the first adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the second adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the third adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, the width of the fourth adhesive groove is D2, and 0.8 ≤ D1 / D2; and / or, The width of the seal is D1, and the width of the fifth adhesive groove is D2, where 0.8 ≤ D1 / D2.

9. The housing according to claim 8, characterized in that, 8 mm ≤ D2 ≤ 12 mm.

10. A battery pack, characterized in that, include: The module and the housing as described in any one of claims 1-9, wherein the module is assembled inside the housing.

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