Battery pack case

Abstract

This application provides a battery pack housing, which includes a base plate, side beams, crossbeams, and reinforcing members. The base plate and side beams enclose a receiving cavity, and the crossbeams and reinforcing members are located within the receiving cavity. The reinforcing members include a first mounting portion and a second mounting portion. The crossbeams, the first mounting portion, the second mounting portion, and the side beams are connected sequentially, and the first mounting portion and the second mounting portion are integrally formed. By connecting the crossbeams of the battery pack housing to the reinforcing members, and connecting the reinforcing members to the side beams of the battery pack housing, this application increases the overall connection strength of the battery pack housing, which helps to reduce the probability of safety risks in scenarios with high strength requirements.

Description

Technical Field

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

[0002] With the continuous development of the new energy industry, energy storage batteries have gradually integrated into people's daily lives and are widely used in new energy vehicles, home energy storage, and industrial and commercial energy storage. Currently, the safety requirements for new energy vehicles are becoming increasingly stringent, leading to higher safety standards under various operating conditions in the design of solutions. The battery pack enclosure plays a crucial role in housing and supporting the energy storage battery pack; for example, the lower enclosure of the battery pack enclosure bears the weight of the battery pack. The connection strength between the crossbeams and side beams of the lower enclosure is critical for safety under special operating conditions. Current conventional designs for the lower enclosure use welding to connect the crossbeams and side beams, but these designs cannot meet the strength requirements under conditions of high strength, such as vibration and torsion. Utility Model Content

[0003] This application proposes a battery pack housing. By connecting the crossbeams of the battery pack housing to the reinforcing members, and connecting the reinforcing members to the side beams of the battery pack housing, the overall connection strength of the battery pack housing is increased, which helps to reduce the probability of safety risks occurring in scenarios with high strength requirements.

[0004] In a first aspect, embodiments of this application propose a battery pack housing, including a base plate, side beams, crossbeams, and reinforcing members; the base plate and side beams enclose a receiving cavity, the crossbeams and reinforcing members are located within the receiving cavity, and the reinforcing members include a first mounting portion and a second mounting portion, the crossbeams, the first mounting portion, the second mounting portion and the side beams are connected in sequence, and the first mounting portion and the second mounting portion are integrally formed.

[0005] This application provides a reinforcing member in the battery pack housing, which includes an integrally formed first mounting part and a second mounting part. The crossbeam of the battery pack housing is connected to the first mounting part, and the second mounting part is connected to the side beam of the battery pack housing. This enhances the connection strength between the crossbeam and the side beam, which helps to reduce the probability of safety risks occurring in scenarios where the battery pack housing has high strength requirements.

[0006] In one possible implementation, the first mounting portion includes a first connecting plate, and the crossbeam includes a second connecting plate. The first connecting plate and the second connecting plate are stacked along the thickness direction of the battery pack housing. This increases the contact area between the end of the crossbeam and the first mounting portion, which helps to enhance the connection strength between the crossbeam and the first mounting portion.

[0007] In one possible implementation, the first mounting part has a first channel, and the crossbeam has a second channel. Both the first and second channels are oriented along the length of the crossbeam, with the second channel surrounding and enclosing the first channel. By forming the first and second channels at the connection between the first mounting part and the crossbeam, the structural strength of the connection between the first mounting part and the crossbeam is improved. Furthermore, by enclosing the first channel with the second channel to increase the contact area between the end of the crossbeam and the first mounting part, the connection strength between the crossbeam and the first mounting part is further enhanced.

[0008] In one possible implementation, the first mounting portion includes a reinforcing plate that surrounds a first channel to form a first groove, with at least a portion of the first groove located within a second channel. The reinforcing plate can further enhance the structural strength of the first mounting portion itself, thereby further strengthening the connection between the crossbeam and the side beam.

[0009] In one possible implementation, the battery pack housing further includes an adhesive component, at least partially located between the first groove and the second channel. By filling at least part of the adhesive component between the inner wall of the second channel and the outer surface of the first groove, the connection strength between the crossbeam and the first mounting portion is further enhanced.

[0010] In one possible implementation, the battery pack housing further includes a baffle plate, which, together with the second channel, forms a second groove. Along the length of the crossbeam, the openings of the first and second grooves are positioned opposite each other. The baffle plate serves to block adhesive components. This baffle plate can prevent adhesive components from leaking and intruding into the crossbeam, thus avoiding a decrease in the connection strength between the crossbeam and the first connecting part. Furthermore, the baffle plate can enhance the structural strength of the connection point of the crossbeam. All of these factors contribute to ensuring the connection strength between the crossbeam and the first mounting part.

[0011] In one possible implementation, the adhesive has a third channel, with the outer wall of the first groove connected to the inner wall of the third channel, and the inner wall of the second groove connected to the outer wall of the third channel. This facilitates the adhesive fully filling the space between the first and second grooves, thereby ensuring the connection strength between the crossbeam and the first mounting portion.

[0012] In one possible implementation, the battery pack housing further includes a first welded component and a second welded component, both disposed at the ends of the crossbeam. The weld of the first welded component is used to weld the end and the first mounting portion, and the weld of the second welded component is used to weld the second mounting portion and the side beam. This helps to further enhance the connection strength between the crossbeam and the first mounting portion, enhance the connection strength between the side beam and the second mounting portion, and ultimately further enhance the connection strength between the crossbeam and the side beam.

[0013] In one possible implementation, the second mounting part is plate-shaped and fits against the connecting surface of the side beam facing the crossbeam. The second mounting part is riveted to the connecting surface. The fit between the second mounting part and the connecting surface ensures the compatibility of the curved surface between the second mounting part and the side beam, which is conducive to forming a riveted relationship between the second mounting part and the side beam, and ultimately further increases the connection strength between the second mounting part and the side beam.

[0014] In one possible implementation, the battery pack housing further includes triangular blocks, with at least two triangular blocks. At least one triangular block connects the crossbeam and the second mounting portion, and at least one triangular block connects the second mounting portion and the side beam. This can further enhance the connection strength between the crossbeam and the second mounting portion, as well as the connection strength between the side beam and the second mounting portion, and ultimately further enhance the connection strength between the crossbeam and the side beam. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the battery pack housing provided in an embodiment of this application;

[0016] Figure 2 This is an exploded view of a portion of the structure of the battery pack housing provided in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the structure of the reinforcing member provided in the embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the structure of a battery pack housing provided in another embodiment of this application;

[0019] Figure 5 This is an AA cross-sectional view of the battery pack housing according to an embodiment of this application;

[0020] Figure 6 This is an AA cross-sectional view of the battery pack housing according to another embodiment of this application;

[0021] Figure 7 This is an AA cross-sectional view of the battery pack housing according to another embodiment of this application;

[0022] Figure 8 This is a BB cross-sectional view of the battery pack housing according to an embodiment of this application.

[0023] Figure label:

[0024] 1000 - Battery pack housing; 1 - Reinforcing member; 11 - First mounting part; 111 - First connecting plate; 112 - First channel; 113 - Reinforcing plate; 114 - First groove; 1141 - Opening of the first groove; 1142 - Outer wall of the first groove; 12 - Second mounting part; 121 - First fixing hole; 100 - Base plate; 200 - Side beam; 201 - Connecting surface; 202 - Second fixing hole; 10 - Receiving cavity; 300 - Crossbeam; 301 - Second connecting plate ; 302 - Second channel; 303 - Second groove; 3031 - Opening of the second groove; 3032 - Inner wall of the second groove; 304 - End; 400 - Adhesive component; 401 - Third channel; 4011 - Inner wall of the third channel; 4012 - Outer wall of the third channel; 500 - Baffle; 600 - First welded component; 601 - Weld of the first welded component; 700 - Second welded component; 701 - Weld of the second welded component; 800 - Rivet; 900 - Triangular block. Detailed Implementation

[0025] For ease of understanding, the relevant technical terms involved in the embodiments of this application will be explained and described below.

[0026] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more.

[0027] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Features specified as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "side," "top," and "bottom," are only for reference to the directions in the accompanying drawings. These directional terms are used to better and more clearly explain and understand the embodiments of this application, and are not intended to explicitly or implicitly suggest that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, etc., and therefore should not be construed as limiting the embodiments of this application.

[0029] With the continuous development of the new energy industry, energy storage batteries have gradually integrated into people's daily lives and are widely used in new energy vehicles, home energy storage, and industrial and commercial energy storage. Currently, the safety requirements for new energy vehicles are becoming increasingly stringent, leading to higher safety standards under various operating conditions in the design of solutions. The battery pack enclosure plays a crucial role in housing and supporting the energy storage battery pack. For example, the lower battery enclosure, as the carrier of the power battery, is widely used in new energy vehicles. The lower battery enclosure provides installation space for the battery cells while possessing certain structural strength and airtightness. The connection strength between the crossbeams and side beams of the lower enclosure plays a vital role in ensuring safety under special operating conditions. Current conventional designs for lower enclosures use welding to connect the crossbeams and side beams. However, under conditions requiring high strength, such as vibration and torsion, current lower enclosure designs cannot meet the strength requirements.

[0030] This application proposes a battery pack housing. By connecting the crossbeams of the battery pack housing to the reinforcing members, and connecting the reinforcing members to the side beams of the battery pack housing, the overall connection strength of the battery pack housing is increased, which helps to reduce the probability of safety risks occurring in scenarios with high strength requirements.

[0031] Figure 1 This is a structural schematic diagram of the battery pack housing 1000 provided in an embodiment of this application. Figure 2 This is an exploded view of a portion of the structure of the battery pack housing 1000 provided in this application embodiment, combined with... Figure 1 and Figure 2 As shown, the battery pack housing 1000 includes a base plate 100, side beams 200, crossbeams 300, and reinforcing members 1. The side beams 200 surround the base plate 100, and the side of the base plate 100 facing away from the side beams 200 is in contact with the external environment. Schematic, the base plate 100 can be a protective plate with a certain rigidity. The base plate 100 and the side beams 200 enclose a receiving cavity 10, and the crossbeams 300 are located within the receiving cavity 10. Schematic, the crossbeams 300 can span two opposite inner sides of the side beams 200 along the length of the battery pack housing 1000, or the crossbeams 300 can span two other opposite inner sides of the side beams 200 along the length of the battery pack housing 1000; that is, the crossbeams 300 can be transverse or longitudinal. There can be multiple crossbeams 300, which can be used to divide the receiving cavity 10 into multiple sub-receiving cavities 10, each of which can accommodate multiple battery modules.

[0032] Combination Figure 1 and Figure 2As shown, the reinforcing member 1 is located within the receiving cavity 10. For example, the reinforcing member 1 can be an aluminum part manufactured by machining or die casting. The reinforcing member 1 may include a first mounting portion 11 and a second mounting portion 12. The crossbeam 300, the first mounting portion 11, the second mounting portion 12, and the side beam 200 are connected sequentially, meaning that one end of the crossbeam 300 along its length is connected to the first mounting portion 11, the first mounting portion 11 is connected to the second mounting portion 12, and the second mounting portion 12 is connected to the side beam 200. The first mounting portion 11 and the second mounting portion 12 are integrally formed, meaning that the first mounting portion 11 and the second mounting portion 12 can be obtained together through a process such as one-time machining or one-time die casting. In this embodiment, the reinforcing member 1 with a certain structural strength indirectly connects the crossbeam 300 and the side beam 200, increasing the connection methods between the crossbeam 300 and the side beam 200 and enhancing the connection strength between them. This helps reduce the probability of safety risks occurring in the battery pack housing 1000 under scenarios with high strength requirements. Indicatively, the structural shape of the first mounting part 11 can be adapted to the cross-sectional shape of the end 304 of the crossbeam 300, and the second mounting part 12 can adopt a shape adapted to the side beam 200.

[0033] Figure 3 This is a structural schematic diagram of the reinforcing member 1 provided in the embodiments of this application, combined with... Figure 1 , Figure 2 and Figure 3 As shown, in one possible embodiment, the battery pack housing 1000 further includes a first welded component 600 and a second welded component 700. Both the first welded component 600 and the second welded component 700 are disposed at the end 304 of the crossbeam 300. The weld 601 of the first welded component 600 is used to weld the end 304 and the first mounting portion 11. That is, based on the established connection between the crossbeam 300 and the first mounting portion 11, molten metal is formed within the weld 601 of the first welded component 600 to weld the crossbeam 300 and the first mounting portion 11 together, further enhancing the connection strength between the crossbeam 300 and the first mounting portion 11. The weld 701 of the second welded component 700 can be used to weld the second mounting portion 12 and the side beam 200. The shape of the second welded part 700 can be adapted to the shape of the second mounting part 12. For example, the second mounting part 12 can be in the form of a sheet, and the second welded part 700 can be in the form of a rectangular frame, so that the second welded part 700 can be fitted onto the side of the second mounting part 12, which is beneficial to increase the welding area between the second mounting part 12 and the side beam 200, and further enhance the connection strength between the side beam 200 and the second mounting part 12.

[0034] Combination Figure 1 , Figure 2 and Figure 3As shown, in one possible implementation, the second mounting portion 12 may have a first fixing hole 121, the connecting surface 201 of the side beam 200 facing the cross beam 300 may have a second fixing hole 202, and the battery pack housing 1000 may further include a rivet 800, which is threadedly connected to the first fixing hole 121 and the second fixing hole 202 in sequence, so that the second mounting portion 12 is riveted to the connecting surface 201, further increasing the connection strength between the second mounting portion 12 and the side beam 200. The second mounting portion 12 is plate-shaped and can fit against the connecting surface 201. Schematic, when the connecting surface 201 is flat, the second mounting portion 12 may be flat; when the connecting surface 201 is curved, the second mounting portion 12 may be arc-shaped to better fit against the connecting surface 201, ensuring the curvature fit between the second mounting portion 12 and the side beam 200, which is beneficial for forming a riveting relationship between the second mounting portion 12 and the side beam 200. It should be noted that the riveting method in this application embodiment can be combined with the welding method in the aforementioned embodiment to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0035] Figure 4 This is a structural schematic diagram of a battery pack housing 1000 provided in another embodiment of this application, combined with... Figure 2 , Figure 3 and Figure 4 As shown, in one possible embodiment, the battery pack housing 1000 may further include triangular blocks 900, with at least two triangular blocks 900. At least one triangular block 900 is connected between the crossbeam 300 and the second mounting portion 12. Specifically, the first face of the triangular block 900 is connected to the side of the crossbeam 300, and the second face of the triangular block 900 is connected to the side of the second mounting portion 12 facing away from the side beam 200. This increases the connection between the crossbeam 300 and the second mounting portion 12, thereby enhancing the connection strength between the crossbeam 300 and the second mounting portion 12. The third face of the triangular block 900 is connected between the first and second faces, which enhances the connection strength between the first and second faces, ultimately further enhancing the connection strength between the crossbeam 300 and the second mounting portion 12. At least one triangular block 900 is connected to the second mounting portion 12 and the side beam 200. Specifically, the first face of the triangular block 900 is connected to the side of the second mounting portion 12 facing away from the crossbeam 300, and the second face of the triangular block 900 is connected to the side of the side beam 200 facing the crossbeam 300. This increases the connection between the side beam 200 and the second mounting portion 12, thereby strengthening the connection between them. The third face of the triangular block 900 is connected between the first and second faces, enhancing the connection between them and further strengthening the connection between the side beam 200 and the second mounting portion 12. It should be noted that the connection method of the triangular block 900 in this embodiment can be combined with the welding method of the aforementioned embodiments to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0036] Figure 5 This is a cross-sectional view (AA) of the battery pack housing 1000 according to an embodiment of this application, combined with... Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in one possible implementation, the first mounting portion 11 includes a first connecting plate 111, and the crossbeam 300 includes a second connecting plate 301. The first connecting plate 111 and the second connecting plate 301 are stacked along the thickness direction of the battery pack housing 1000. This increases the contact area between the end 304 of the crossbeam 300 and the first mounting portion 11, which is beneficial for enhancing the connection strength between the crossbeam 300 and the first mounting portion 11. In another possible implementation, the number of both the first connecting plate 111 and the second connecting plate 301 can be at least two. By increasing the number of mating structures between the first connecting plate 111 and the second connecting plate 301, the connection strength between the crossbeam 300 and the first mounting portion 11 is further enhanced. It should be noted that the mating structure of the first connecting plate 111 and the second connecting plate 301 in this embodiment can be combined with the welding and riveting methods of the aforementioned embodiments, or it can be combined with the welding method and the triangular block 900 method of the aforementioned embodiments to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0037] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in one possible implementation, the battery pack housing 1000 further includes an adhesive 400, which can be located between the first connecting plate 111 and the second connecting plate 301, which helps to further enhance the connection strength between the crossbeam 300 and the first mounting part 11.

[0038] Figure 6 This is an AA cross-sectional view of the battery pack housing 1000 according to another embodiment of this application, in conjunction with... Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, in one possible embodiment, the first mounting portion 11 has a first channel 112, and the crossbeam 300 has a second channel 302. Both the first channel 112 and the second channel 302 are arranged along the length direction of the crossbeam 300. The second channel 302 surrounds and encloses the first channel 112, that is, the inner wall of the second channel 302 is stacked with the outer wall of the first channel 112. By forming the first channel 112 and the second channel 302 at the connection between the first mounting portion 11 and the crossbeam 300, the structural strength of the connection between the first mounting portion 11 and the crossbeam 300 is improved. Combined with the fact that the second channel 302 surrounds and encloses the first channel 112 to increase the contact area between the end 304 of the crossbeam 300 and the first mounting portion 11, it is beneficial to further enhance the connection strength between the crossbeam 300 and the first mounting portion 11. In another possible embodiment, the adhesive 400 can be filled between the inner wall of the second channel 302 and the outer wall of the first channel 112 to further enhance the connection strength between the crossbeam 300 and the first mounting portion 11. It should be noted that the mating structure of the first channel 112 and the second channel 302 in this embodiment can be combined with the welding method and riveting method of the aforementioned embodiment, or it can be combined with the welding method and the triangular block 900 method of the aforementioned embodiment to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0039] Figure 7 This is a cross-sectional view (AA) of the battery pack housing 1000 according to another embodiment of this application. Figure 8 This is a BB cross-sectional view of the battery pack housing 1000 according to an embodiment of this application, combined with... Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, in one possible implementation, the first mounting portion 11 includes a reinforcing plate 113, which, together with the first channel 112, forms a first groove 114. Specifically, the reinforcing plate 113 is disposed at the end of the first channel 112 away from the crossbeam 300, i.e., the opening 1141 of the first groove 114 faces the crossbeam 300. The reinforcing plate 113 can further enhance the structural strength of the first mounting portion 11. At least a portion of the first groove 114 is located within the second channel 302, i.e., along the thickness direction of the battery pack housing 1000, the projection of at least a portion of the first groove 114 is located within the projection of the second channel 302, which is beneficial to increasing the contact area between the end 304 of the crossbeam 300 and the first mounting portion 11. It should be noted that the mating structure of the first groove 114 and the second channel 302 in this embodiment can be combined with the welding and riveting methods of the aforementioned embodiments, or, can be combined with the welding method and the triangular block 900 method of the aforementioned embodiments, to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0040] Combination Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, in one possible implementation, at least a portion of the adhesive 400 is located between the first groove 114 and the second channel 302. Specifically, when there is only one first groove 114 and one second channel 302, all adhesives 400 can fill the space between the first groove 114 and the second channel 302; when there are at least two first grooves 114 and two channels 302, the mating structure of the first groove 114 and the second channel 302 can be spaced apart along the thickness direction of the battery pack housing 1000, and some adhesives 400 can fill the space between two adjacent mating structures of the first groove 114 and the second channel 302, that is, some adhesives 400 can be located between a portion of the first mounting portion 11 and a portion of the crossbeam 300, which also helps to enhance the connection strength between the crossbeam 300 and the first mounting portion 11. In this embodiment, by filling at least a portion of the adhesive 400 between the inner wall of the second channel 302 and the outer surface of the first groove 114, it is beneficial to further enhance the connection strength between the crossbeam 300 and the first mounting portion 11.

[0041] Combination Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, in one possible implementation, the battery pack housing 1000 may further include a baffle 500. The baffle 500 can be used to block the adhesive 400 to prevent it from leaking out and intruding into the crossbeam 300, thus reducing the connection strength between the crossbeam 300 and the first connecting part. The baffle 500 can form a second groove 303 with the second channel 302, that is, the baffle 500 can further enhance the structural strength of the connection of the crossbeam 300. Along the length direction of the crossbeam 300, the opening 1141 of the first groove 114 and the opening 3031 of the second groove 303 are arranged opposite to each other. Specifically, the opening 1141 of the first groove 114 faces a direction that can point from the side beam 200 to the crossbeam 300, and the opening 3031 of the second groove 303 faces a direction that can point from the crossbeam 300 to the side beam 200. At least a portion of the first groove 114 can be located within the second groove 303, which increases the contact area between the end 304 of the crossbeam 300 and the first mounting portion 11, thereby enhancing the connection strength between the crossbeam 300 and the first mounting portion 11. It should be noted that the mating structure of the first groove 114 and the second groove 303 in this embodiment can be combined with the welding and riveting methods of the aforementioned embodiments, or with the welding method and the triangular block 900 method of the aforementioned embodiments, to jointly enhance the connection strength between the crossbeam 300 and the side beam 200.

[0042] Combination Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, in one possible embodiment, the adhesive 400 has a third channel 401. Schematably, the first groove 114 of the first mounting portion 11 can extend into the third channel 401, and the second groove 303 of the crossbeam 300 can surround and partially enclose the third channel 401. That is, the outer wall 1142 of the first groove 114 can connect with the inner wall 4011 of the third channel 401, and the inner wall 3032 of the second groove 303 can connect with the outer wall 4012 of the third channel 401. This facilitates the adhesive 400 to fully fill the space between the first groove 114 and the second groove 303, thereby ensuring the connection strength between the crossbeam 300 and the first mounting portion 11.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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 of the technical features. 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 application.

Claims

1. A battery pack case characterized by, include: The substrate, side beam, crossbeam, and reinforcing member are provided; the substrate and the side beam form a receiving cavity, the crossbeam and the reinforcing member are located within the receiving cavity, the reinforcing member includes a first mounting part and a second mounting part, the crossbeam, the first mounting part, the second mounting part and the side beam are connected in sequence, and the first mounting part and the second mounting part are integrally formed.

2. The battery pack enclosure of claim 1, wherein, The first mounting part includes a first connecting plate, and the crossbeam includes a second connecting plate. The first connecting plate and the second connecting plate are stacked along the thickness direction of the battery pack housing.

3. The battery pack enclosure of claim 1, wherein, The first mounting part has a first channel, and the crossbeam has a second channel. Both the first channel and the second channel are arranged in the length direction of the crossbeam, and the second channel surrounds and encloses the first channel.

4. The battery pack enclosure of claim 3, wherein, The first mounting portion includes a reinforcing plate, which forms a first groove with the first channel, and at least a portion of the first groove is located within the second channel.

5. The battery pack enclosure of claim 4, wherein, The battery pack housing also includes adhesive components, at least a portion of which are located between the first groove and the second channel.

6. The battery pack enclosure of claim 5, wherein, The battery pack housing also includes a baffle plate, which forms a second groove with the second channel. Along the length of the crossbeam, the openings of the first groove and the second groove are opposite to each other. The baffle plate is used to block the adhesive.

7. The battery pack enclosure of claim 6, wherein, The adhesive has a third channel, the outer wall of the first groove is connected to the inner wall of the third channel, and the inner wall of the second groove is connected to the outer wall of the third channel.

8. The battery pack enclosure of claim 1, wherein, The battery pack housing also includes a first welded component and a second welded component. Both the first welded component and the second welded component are disposed at the ends of the crossbeam. The weld of the first welded component is used to weld the end and the first mounting part, and the weld of the second welded component is used to weld the second mounting part and the side beam.

9. The battery pack enclosure of claim 1, wherein, The second mounting part is in the form of a sheet, and the second mounting part is attached to the connecting surface of the side beam facing the crossbeam, and the second mounting part is riveted to the connecting surface.

10. The battery pack enclosure of claim 1, wherein, The battery pack housing also includes triangular blocks, and the number of triangular blocks is at least two. At least one of the triangular blocks is connected between the crossbeam and the second mounting part, and at least one of the triangular blocks is connected between the second mounting part and the side beam.

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