Battery pack and electric device

Abstract

The application discloses a battery pack and an electric device. The battery pack comprises a box body with a containing cavity, a support frame and a battery module arranged in the containing cavity. The support frame comprises a mounting bracket and a fastening bracket connected with each other. The mounting bracket has a mounting groove with an opening facing a second direction. The battery module is arranged in the mounting groove and comprises a plurality of single batteries stacked along the second direction. The fastening bracket is detachably connected to one end of the mounting bracket at the opening and presses and fixes the plurality of single batteries along the second direction. According to the application, the fastening bracket provides extrusion force along the second direction to extrude and fix the plurality of batteries in the mounting groove. After the fastening bracket fixes the batteries, the support frame and the battery module can be hoisted into the box body as a whole, and subsequent installation work can be performed, so that the waiting time for solidification of glue fixing is reduced, the production rhythm is greatly accelerated, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery pack and electrical device. Background Technology

[0002] As the power supply component of electrical equipment, a battery pack consists of multiple individual batteries connected together in series, parallel or other ways, and integrates a battery management system (BMS), connectors and wiring harnesses, heat dissipation system and other components to form an integrated battery system that works together to store and release electrical energy.

[0003] Currently, individual cells are fixed inside the battery pack using adhesive. This requires waiting for the adhesive to solidify before the individual cells or battery modules can be transferred, extending the production cycle and reducing production efficiency. Utility Model Content

[0004] This application provides a battery pack and electrical equipment to improve battery pack production efficiency.

[0005] In a first aspect, this application provides a battery pack having a vertical first direction and a second direction. The battery pack includes: a housing, including a bottom box and a cover plate, the bottom box having an opening facing the first direction, the cover plate connecting to the bottom box and sealing the opening, the bottom box and the cover plate enclosing a receiving cavity; a support frame disposed in the receiving cavity, including an interconnected mounting bracket and a fastening bracket, the mounting bracket having a mounting groove, the mounting groove having an opening facing the second direction; and a battery module disposed in the mounting groove, including multiple individual batteries, the multiple individual batteries being stacked along the second direction; wherein, the fastening bracket is detachably connected to one end of the mounting bracket located at the opening, the fastening bracket pressing and fixing the multiple individual batteries to the mounting bracket along the second direction.

[0006] To achieve the above technical solution, in some examples, the battery pack manufacturing process may include the following steps: fabricating a support frame, stacking batteries into the mounting slot, and after stacking the required number of batteries, fixing fastening brackets to the mounting brackets. The fastening brackets provide compressive force along a second direction, thereby pressing and fixing multiple batteries into the mounting slots. In this embodiment, the fixing of the batteries in the mounting slots mainly relies on the compressive force provided by the fastening brackets. After the fastening brackets fix the batteries, the support frame and battery module can be immediately hoisted into the base box, greatly accelerating the production pace and improving production efficiency. It is understood that in some related examples, the batteries need to be fixed in the mounting slots with adhesive. The connecting force generated by the curing of the adhesive fixes the batteries in the mounting slots before the mounting brackets are hoisted into the base box. Since the adhesive requires curing time, a period of waiting is needed after application, which greatly lengthens the production cycle and reduces production efficiency.

[0007] As one of the optional embodiments of this application, the battery module further includes a frame and a fixing adhesive layer 33. Multiple individual batteries are stacked inside the frame along the second direction, and the fixing adhesive layer 33 is disposed between the individual batteries and the inner wall of the frame. The frame is connected to the support frame.

[0008] To achieve the above technical solution, the battery is connected to the frame through a fixing adhesive layer to form the first connection and fixing structure, and the frame is connected to the support frame to form the second connection and fixing structure. This effectively enhances the connection strength between the battery and the support frame and ensures the reliability of the battery pack.

[0009] As one of the optional embodiments of this application, the battery module further includes a connecting block, which connects to the frame and extends in a direction away from the individual battery cell; in a first direction, the connecting block is disposed on the side of the frame near the cover plate and located between the mounting bracket and the cover plate, and the connecting block is detachably connected to the side of the mounting bracket near the cover plate.

[0010] To achieve the above technical solution, a structure is provided where a frame is connected to a mounting bracket. The frame is detachably connected to the support frame, and installation only requires fixing the connecting block with bolts, significantly improving installation convenience and production efficiency. When battery maintenance is needed, the frame can be removed from the support frame simply by unlocking the connecting block bolts, allowing multiple batteries inside the frame to be removed together, facilitating subsequent battery disassembly and maintenance. Furthermore, because the frame and support frame are detachable, during the production stage, the frame can be initially fixed to the individual battery cells externally, and then installed onto the support frame when it needs to be installed into the battery pack. This makes the bonding and settling time between the frame and the battery more flexible, allowing for adjustments to the frame installation as needed to improve efficiency.

[0011] As one of the optional embodiments of this application, the battery pack also has a third direction, with the first direction, the second direction and the third direction being perpendicular to each other; the frame includes: two end plates, with each individual battery cell stacked between the two end plates along the second direction; and a side plate, disposed on the side where each individual battery cell is located in the third direction; wherein, there is a clearance between the side plate and the two adjacent end plates.

[0012] To achieve the above technical solution, the end plates and side plates that make up the frame are not integrally connected or welded together. This leaves more processing allowance. For example, after the batteries are stacked and placed into the frame along the second direction, the existence of the allowance gap can better adapt to the squeezing force applied to the end plates by external equipment, thereby adjusting the fastening force applied to the batteries and making the production and processing more flexible.

[0013] As one optional embodiment of this application, it also includes a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other, and the mounting bracket includes: a plurality of crossbeams, each crossbeam extending along the second direction and the crossbeams being spaced apart in the third direction; and a longitudinal beam extending along the third direction and connecting the crossbeams; wherein the crossbeams and the longitudinal beams together form a plurality of mounting grooves, and at least one end of each crossbeam in the second direction forms an opening.

[0014] As one of the optional embodiments of this application, the support frame is detachably connected to the bottom box.

[0015] As one of the optional embodiments of this application, the bottom box includes a support plate, which is disposed on the side of the battery module away from the cover plate in a first direction; the battery pack also includes longitudinal bracing and a plurality of transverse bracing, each transverse bracing and longitudinal bracing being disposed on the side of the support plate facing the cover plate, each transverse bracing extending in a second direction and being spaced apart in a third direction, the longitudinal bracing extending in a third direction, each transverse beam being detachably connected to the transverse bracing, and the longitudinal beam being detachably connected to the longitudinal bracing.

[0016] To achieve the above technical solution, during the installation phase, the support frame is fixed to the base box using bolts, which reduces workload and speeds up manufacturing efficiency; during the maintenance phase, the support frame can be removed from the base box simply by unscrewing the bolts used to fix the support frame to the base box, making disassembly simple and convenient.

[0017] As one of the optional embodiments of this application, the battery pack further includes an auxiliary support, which is disposed on the side of the support plate facing the cover plate, and the fastening bracket is detachably connected to the auxiliary support.

[0018] As one of the optional embodiments of this application, the bottom box further includes a frame connected to the support plate, the frame being disposed on the periphery of the support plate and extending from the support plate toward the cover plate; wherein, at least one end of the frame in the second direction is provided with a mating groove, the mating groove communicating with the receiving cavity, and at least a portion of the fastening bracket being received in the mating groove to seal the mating groove.

[0019] As one of the optional embodiments of this application, a sealing groove is recessed on the inner side of the mating groove, and a protrusion is provided on the side of the fastening bracket facing the mating groove, and the protrusion is engaged with the sealing groove.

[0020] As one of the optional embodiments of this application, the battery pack also includes a sealing sheet disposed between the protrusion and the sealing groove, and the fastening bracket and the frame are detachably connected.

[0021] By implementing the above technical solution, a portion of the fastening bracket becomes part of the frame, further enhancing the connection between the fastening bracket and the frame, making the connection more stable and reliable, and saving materials.

[0022] As one of the optional embodiments of this application, the battery pack also includes a lifting member that is detachably connected to the mounting bracket.

[0023] On the other hand, this application also provides an electrical device including the aforementioned battery pack.

[0024] One of the above technical solutions has the following advantages or beneficial effects: In this application, the support frame is made into a detachable fastening bracket and mounting bracket. The fastening bracket provides a compressive force along the second direction, thereby pressing and fixing multiple batteries into the mounting slot. The fixing of the batteries in the mounting slot mainly relies on the compressive force provided by the fastening bracket. After the fastening bracket fixes the batteries, the support frame and battery module can be immediately hoisted into the base box, thus greatly accelerating the production pace and improving production efficiency. It is understandable that in some related examples, the batteries need to be fixed in the mounting slot with glue. After the connecting force generated by the glue curing fixes the batteries in the mounting slot, the mounting bracket is then hoisted into the base box. Since the glue needs curing time, a period of waiting is required after glue application, which greatly lengthens the production cycle and reduces production efficiency. Attached Figure Description

[0025] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0026] Figure 1 This is an overall exploded structural diagram provided in the embodiments of this application;

[0027] Figure 2 This is an exploded structural diagram of the embodiment of this application after removing the cover plate and sealing ring;

[0028] Figure 3 This is an exploded structural diagram of the support frame provided in an embodiment of this application;

[0029] Figure 4 This is an exploded structural diagram of a battery module provided in an embodiment of this application;

[0030] Figure 5 This is a structural diagram provided in an embodiment of this application to illustrate the bottom box structure;

[0031] Figure 6 This is a cross-sectional view provided in an embodiment of this application to show the internal structure of the bottom box;

[0032] Figure 7 This is provided by the embodiments of this application. Figure 6 A magnified view of part A in the middle;

[0033] Figure 8 This is provided by the embodiments of this application. Figure 6 A magnified view of part B in the middle section.

[0034] Reference numerals: 1. Box body; 11. Bottom box; 111. Support plate; 112. Frame; 12. Cover plate; 10. Receiving cavity; 100. Opening;

[0035] 2. Support frame; 21. Mounting bracket; 211. Crossbeam; 212. Longitudinal beam; 22. Fastening bracket; 20. Mounting groove; 200. Opening;

[0036] 3. Battery module; 31. Individual battery cell; 32. Frame; 321. End plate; 322. Side plate; 32a. Connecting block; 320. Allowance gap; 33. Fixing adhesive layer;

[0037] 41. Horizontal brace; 42. Vertical brace; 43. Auxiliary support;

[0038] 5. Mating groove; 51. Sealing groove; 52. Protrusion;

[0039] 6. Sealing sheet; 7. Lifting parts; 8. Sealing ring;

[0040] Z, first direction; X, second direction; Y, third direction. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0043] The following is in conjunction with the appendix Figure 1-8 This application will be further described below.

[0044] Reference Figures 1-3This application provides a battery pack. The battery pack has a first perpendicular direction Z, a second perpendicular direction X, and a third perpendicular direction Y. In one example, the first perpendicular direction Z, the second perpendicular direction X, and the third perpendicular direction Y form a Cartesian coordinate system. Specifically, the battery pack is configured as a cuboid, the first perpendicular direction Z is the thickness direction of the battery pack, and the second perpendicular direction X and the third perpendicular direction Y are the length direction and width direction of the battery pack, respectively.

[0045] It should be noted that the introduction of the first direction Z, the second direction X, and the third direction Y in the various embodiments of this application is merely for the convenience of describing spatial positional relationships and should not be construed as limiting the scope of the embodiments of this application. Therefore, the pairwise perpendicular relationship between the first direction Z, the second direction X, and the third direction Y can be interpreted, depending on the actual technical scenario, as the first direction Z, the second direction X, and the third direction Y respectively representing three mutually perpendicular directions in three-dimensional space. It can also be reasonably interpreted as a nearly perpendicular relationship between the first direction Z, the second direction X, and the third direction Y, for example, the included angles between the first direction Z, the second direction X, and the third direction Y are all within the range of 85°-95°. As long as the technical solution can conform to the spirit of this utility model or achieve the technical effect described in this utility model, it can be considered to fall within the scope defined by the appended claims.

[0046] The battery pack includes a housing 1 with a receiving cavity 10, a support frame 2 and battery modules 3 disposed within the receiving cavity 10. The housing 1 includes a bottom box 11 and a cover plate 12. The bottom box 11 has an opening 100 facing a first direction Z. The cover plate 12 connects to the bottom box 11 and covers the opening 100. The bottom box 11 and the cover plate 12 together form the receiving cavity 10. The support frame 2 includes an interconnected mounting bracket 21 and a fastening bracket 22. The mounting bracket 21 has a mounting groove 20 with an opening 200 facing a second direction X. The battery modules 3 are disposed within the mounting groove 20 and include multiple individual battery cells 31 stacked along the second direction X. The fastening bracket 22 is detachably connected to one end of the mounting bracket 21 located at the opening 200, and the fastening bracket 22 presses and fixes the multiple individual battery cells 31 to the mounting bracket 21 along the second direction X.

[0047] To achieve the above technical solution, in some examples, the battery pack manufacturing process may include the following steps: stacking multiple individual battery cells 31 into the mounting slot 20; after stacking the required number of individual battery cells 31, fixing the fastening bracket 22 onto the mounting bracket 21. Thus, by pressing the battery cells 31 within the opening 200 together with the fastening bracket 22 and the mounting bracket 21, the multiple individual battery cells 31 can be pressed and fixed within the mounting slot 20 by the extrusion force along the second direction X and the frictional force along the first direction Z provided by the fastening bracket 22. In this embodiment, the fixing of the individual battery cells 31 within the mounting slot 20 mainly relies on the extrusion force provided by the fastening bracket 22. After the fastening bracket 22 fixes the individual battery cells 31, the support frame 2 and battery module 3 can be immediately hoisted into the base box 11 for subsequent assembly. Compared to the traditional method of placing the individual battery cells 31 in the box 1 and injecting glue between the individual battery cells 31 and the box 1, this method can greatly accelerate the production pace and improve production efficiency. Understandably, in some related examples, the individual battery 31 needs to be fixed in the mounting groove 20 with glue. After the connecting force generated by the glue solidifies and fixes the individual battery 31 in the mounting groove 20, the mounting bracket 21 is then hoisted into the base box 11. Since the glue needs time to solidify, it is necessary to wait for the glue to solidify after the glue is applied. This greatly prolongs the production cycle and reduces production efficiency.

[0048] In some examples, to cope with the expansion of the individual battery cell 31, an elastic frame can be set between adjacent individual batteries cell 31, and an elastic pad can be set between the individual batteries cell 31 located at both ends in the second direction X and the adjacent mounting bracket 21 or fastening bracket 22. The advantage of this is that more space can be reserved for the expansion of the individual battery cell 31 during charging and discharging or when it gets hot. Moreover, compared with the coefficient of friction between individual batteries cell 31, the coefficient of friction between the elastic frame and the elastic pad and the individual battery cell 31 is greater, so the individual battery cell 31 can be more firmly clamped in the opening under the same compressive force.

[0049] In some examples, a sealing ring 8 is also provided between the cover plate 12 and the housing 1. The sealing ring 8 is shaped to match the outline of the opening 100 of the housing 1 and fits against the surface of the housing 1 facing the cover plate 12. When the cover plate 12 is connected to the housing 1, the sealing ring 8 is pressed and fixed, thereby achieving a good seal for the accommodating cavity 10. In some examples, the cover plate 12 and the housing 1 are fixedly connected by bolts. Specifically, the bolts pass through the cover plate 12 and the sealing ring 8 and are screwed into the housing 1. This setting allows the cover plate 12 to be easily disassembled from the housing 1, thereby facilitating installation and maintenance.

[0050] It should be noted that the housing 1 should also include a battery management system, an electrical system, a heat dissipation system, and related connecting devices, so that the battery pack can realize its basic functions. Those skilled in the art should know the composition and function of the above structure, which will not be described in detail in this embodiment.

[0051] Reference Figure 2 and Figure 3 As one optional embodiment of this application, the mounting bracket 21 includes a plurality of interconnected crossbeams 211 and longitudinal beams 212. Each crossbeam 211 extends along a second direction X, and the crossbeams 211 are spaced apart along a third direction Y. The number of longitudinal beams 212 can be one, two, or more, and the longitudinal beams 212 extend along a third direction Y and connect to each crossbeam 211. The crossbeams 211 and longitudinal beams 212 together form a plurality of mounting grooves 20, and at least one end of each crossbeam 211 in the second direction X forms an opening 200. A fastening bracket 22 is connected to the ends of the plurality of crossbeams 211.

[0052] In some examples, three crossbeams 211 and two longitudinal beams 212 are provided. Each longitudinal beam connects to two adjacent crossbeams 211, and the longitudinal beams 212 are located in the middle of the crossbeams 211. This allows the crossbeams 211 and longitudinal beams 212 to cooperate in forming four mounting slots 20 with openings 200. Two fastening brackets 22 are provided, one at each end of the crossbeams 211. The fastening brackets 22 are connected to multiple crossbeams 211 simultaneously to provide compressive force along the second direction X. Alternatively, one longitudinal beam 212 is provided, in which case the longitudinal beam 212 connects all crossbeams 211, and the longitudinal beam 212 forms several openings 200 on both sides in the second direction X. Optionally, the crossbeams 211 and longitudinal beams 212 are connected by a sufficiently strong detachable connection, such as a bolt connection. This improves the ease of installation and disassembly, thereby increasing production efficiency and reducing production difficulty. The fastening brackets 22 and crossbeams 211 are also designed to be connected by a sufficiently strong detachable connection, such as a bolt connection.

[0053] Reference Figure 2 and Figure 4 As one of the optional embodiments of this application, the battery module 3 further includes a frame 32 and a fixing adhesive layer 33. Multiple individual batteries 31 are stacked inside the frame 32 along the second direction X. The fixing adhesive layer 33 is disposed between the individual batteries 31 and the inner wall of the frame 32. The frame 32 is connected to the support frame 2.

[0054] To achieve the above technical solution, the battery is connected to the frame 32 via a fixing adhesive layer 33 to form the first connection and fixing structure, and the frame 32 is connected to the support frame 2 to form the second connection and fixing structure. This effectively enhances the connection strength between the battery and the support frame 2, ensuring the reliability of the battery pack. Furthermore, since the frame 32 is installed on the support frame 2 later, it allows the frame 32 to be fixed externally to the individual battery 31 during the production stage. Then, when it needs to be installed into the battery pack, the frame 32 can be installed onto the support frame 2. This makes the bonding and settling time between the frame 32 and the battery more flexible, allowing for adjustments to the installation and fixing between the frame 32 and the individual battery 31 as needed, thus improving efficiency. For example, multiple frames 32 can be fixed to the individual batteries 31 in advance, and when installation into the support frame 2 is required, the entire frame 32 can be installed.

[0055] As one of the optional embodiments of this application, the frame 32 includes: two end plates 321, with each individual battery cell 31 stacked between the two end plates 321 along the second direction X; and a side plate 322 disposed on the side of each individual battery cell 31 located in the third direction Y; wherein, there is a clearance 320 between the side plate 322 and the two adjacent end plates 321.

[0056] Specifically, there are two end plates 321, which are respectively located at the two ends of the battery module 3 in the second direction X, and one side plate 322 is provided, which is located on the side of the battery module 3 in the third direction Y that is away from the other battery module 3.

[0057] To achieve the above technical solution, a specific structure of the frame 32 is provided. The end plate 321 and the side plate 322 that make up the frame 32 are not integrally connected or welded together. This leaves a processing allowance. For example, after the battery is stacked and placed into the frame 32 along the second direction X, the existence of the allowance gap 320 can better adapt to the squeezing force applied to the end plate 321 by the external equipment, thereby adjusting the fastening force applied to the battery. The production and processing are more flexible. In addition, this setting can better adapt to support frames 2 of different specifications. Furthermore, it can also leave space for the expansion of the battery cell 31.

[0058] The enclosure 32 is detachably connected to the support frame 2. In some optional examples, the battery module 3 further includes a connecting block 32a, which connects to the enclosure 32 and extends from the side of the enclosure 32 away from the individual battery 31 in a direction away from the individual battery 31; in the first direction Z, the connecting block 32a is disposed on the side of the enclosure 32 near the cover plate 12 and located between the mounting bracket 21 and the cover plate 12, and the connecting block 32a is detachably connected to the side of the mounting bracket 21 near the cover plate 12. The connecting block 32a and the enclosure 32 may be integrally formed.

[0059] Specifically, both the end plate 321 and the side plate 322 have an integrally connected connecting block 32a near the top of the cover plate 12. Threaded holes are provided on the top surfaces of the crossbeam 211 and the longitudinal beam 212 near the cover plate 12. The connecting block 32a is connected to the mounting bracket 21 via bolts and the threaded holes. In practical applications, individual cells 31 have high density and weight, and the battery module 3 formed by stacking individual cells 31 is naturally very heavy. Therefore, a detachable connection method with sufficient connection force and structural strength, such as bolt connection, can be used between the connecting block 32a and the mounting bracket 21.

[0060] To achieve the above technical solution, a structure is provided in which the enclosure 32 is connected to the mounting bracket 21. The enclosure 32 is detachably connected to the support frame 2. During installation, only the connecting block 32a needs to be fixed with bolts, which greatly improves the convenience of installation and increases production efficiency. When the battery needs maintenance, the enclosure 32 can be removed from the support frame 2 simply by unlocking the bolts of the connecting block 32a, thereby removing multiple batteries inside the enclosure 32 together, which facilitates the subsequent disassembly and maintenance of the batteries.

[0061] Reference Figures 5-8 As one optional embodiment of this application, the support frame 2 is detachably connected to the base box 11. In some examples, the base box 11 further includes a support plate 111, which is disposed opposite to the cover plate 12 in the first direction Z, and is located on the side of the battery module 3 away from the cover plate 12; the battery pack also includes longitudinal supports 42 and multiple transverse supports 41, each transverse support 41 and longitudinal support 42 being disposed on the side of the support plate 111 facing the cover plate 12, each transverse support 41 extending in the second direction X, and each transverse support 41 being spaced apart in the third direction Y, the longitudinal support 42 extending in the third direction Y, each crossbeam 211 being detachably connected to the transverse support 41, and each longitudinal beam 212 being detachably connected to the longitudinal support 42. The transverse supports 41 correspond one-to-one with the crossbeams 211, and the longitudinal supports 42 correspond one-to-one with the longitudinal beams 212. The horizontal brace 41 and the vertical brace 42 can be integrally formed and protruded on the side of the support plate 111 facing the cover plate 12, or they can be connected to the side of the support plate 111 facing the cover plate 12 by bolts or other connecting parts. In practical applications, the battery module 3 formed by stacking individual batteries 31 is naturally very heavy. The connection between the horizontal beam 211 and the horizontal brace 41, as well as the connection between the vertical beam 212 and the vertical brace 42, can be made by a detachable connection method with sufficient connection force and structural strength, such as bolt connection.

[0062] In some examples, both the cross brace 41 and the longitudinal brace 42 are hollow square tubes, and are fixed to the support plate 111 by welding. The surfaces of the cross brace 41 and the longitudinal brace 42 are provided with threaded holes for threaded engagement between the cross beam 211 and the longitudinal beam 212. Making the cross brace 41 and the longitudinal brace 42 hollow effectively reduces the overall weight of the battery pack.

[0063] The battery pack also includes an auxiliary support 43, which is located on the side of the support plate 111 facing the cover plate 12. In the second direction X, multiple auxiliary supports 43 are arranged opposite to each other at both ends of the support frame 2. The fastening brackets 22 located at both ends of the mounting bracket 21 are detachably connected to the auxiliary support 43.

[0064] The cross brace 41, longitudinal brace 42, and auxiliary support 43 correspond to the detachable connections of the cross beam 211, longitudinal beam 212, and fastening bracket 22, respectively. This allows each part of the support frame 2 to be independently and detachably connected to the housing 1, greatly facilitating the disassembly and installation stages and making the operation more flexible. During the installation stage, the support frame 2 is fixed to the bottom housing 11 by bolts, reducing workload and speeding up manufacturing efficiency; during the maintenance stage, the support frame 2 can be disassembled from the bottom housing 11 simply by unscrewing the bolts used to fix the support frame 2 to the bottom housing 11, making disassembly simple and convenient. The auxiliary support 43 can be integrally formed and protruding on the side of the support plate 111 facing the cover plate 12, or it can be connected to the side of the support plate 111 facing the cover plate 12 by bolts or other connecting parts; the fastening bracket 22 and the auxiliary support 43 can be connected by a detachable method with sufficient connection force and structural strength, such as bolt connection.

[0065] Reference Figure 6 and Figure 7 As one of the optional embodiments of this application, the bottom box 11 further includes a frame 112 connected to the support plate 111. The frame 112 is disposed on the periphery of the support plate 111 and extends from the support plate 111 toward the cover plate 12. The frame 112 has a mating groove 5 at at least one end in the second direction X. The mating groove 5 communicates with the receiving cavity 10, and at least a portion of the fastening bracket 22 is received in the mating groove 5 to seal the mating groove 5.

[0066] The inner side of the mating groove 5 is recessed with a sealing groove 51, and the fastening bracket 22 has a protrusion 52 protruding from one side facing the mating groove 5. The protrusion 52 engages with the sealing groove 51. The battery pack also includes a sealing sheet 6, which is disposed between the protrusion 52 and the sealing groove 51, and is pressed together by the protrusion 52 and the sealing groove 51. The fastening bracket 22 is detachably connected to the frame 112. Furthermore, the fastening bracket 22 and the frame 112 can be connected by a detachable method with sufficient connection force and structural strength, such as bolt connection.

[0067] By implementing the above technical solution, a portion of the fastening bracket 22 becomes part of the frame 112, further enhancing the connection between the fastening bracket 22 and the frame 112, making the connection more stable and reliable, and saving materials.

[0068] Back Figure 1As one optional embodiment of this application, the battery pack further includes at least one lifting member 7, which is detachably connected to the mounting bracket 21. In some examples, the lifting member 7 is configured as a lifting ring, with four lifting members 7 respectively connected to the four corners of the housing 1. The bottom of the lifting ring is a stud, and the lifting ring is detachably connected to the housing 1. When the battery pack needs to be lifted, it can be lifted directly through the lifting member 7, which facilitates the transfer of the battery pack. Furthermore, the lifting ring can be connected to the housing 1 using a detachable connection method with sufficient connection force and structural strength, such as bolt connection.

[0069] On the other hand, this application also provides an electrical device including the aforementioned battery pack.

[0070] The above description is only a partial implementation of the embodiments of this application and is not intended to limit the application in any way. The protection scope of the embodiments of this application is not limited thereto. Any simple modifications, equivalent changes and alterations that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A battery pack, characterized in that, The battery pack includes a first vertical direction and a second vertical direction. The box includes a bottom box and a cover plate, the bottom box having an opening facing the first direction, the cover plate connecting the bottom box and sealing the opening, the bottom box and the cover plate forming an accommodating cavity; A support frame, disposed in the accommodating cavity, includes an interconnected mounting bracket and a fastening bracket, the mounting bracket having a mounting groove having an opening facing the second direction; A battery module, disposed in the mounting slot, includes multiple individual batteries, which are stacked along the second direction. The fastening bracket is detachably connected to one end of the mounting bracket located at the opening, and the fastening bracket presses and fixes the plurality of individual batteries to the mounting bracket along the second direction.

2. The battery pack as described in claim 1, characterized in that, The battery module also includes a frame and a fixing adhesive layer. Multiple individual batteries are stacked inside the frame along the second direction. The fixing adhesive layer is disposed between the individual batteries and the inner wall of the frame. The frame is connected to the support frame.

3. The battery pack as described in claim 2, characterized in that, The battery module further includes a connecting block that connects to the frame and extends from the side of the frame away from the individual battery in a direction away from the individual battery. In the first direction, the connecting block is disposed on the side of the frame near the cover plate and located between the mounting bracket and the cover plate. The connecting block is detachably connected to the side of the mounting bracket near the cover plate.

4. The battery pack as described in claim 2 or 3, characterized in that, The battery pack also has a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; The enclosure includes: Two end plates, with each of the individual cells stacked between the two end plates along the second direction; a side plate, disposed on the side of each individual cell located in the third direction; The side plate and the two adjacent end plates each have a clearance.

5. The battery pack as described in claim 1, characterized in that, It also includes a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other, and the mounting bracket includes: Multiple crossbeams, each of which extends along the second direction and is spaced apart in the third direction; A longitudinal beam, which extends along the third direction and connects to each of the cross beams; The crossbeams and the longitudinal beams together form a plurality of mounting grooves, and at least one end of each crossbeam in the second direction forms an opening.

6. The battery pack as described in claim 5, characterized in that, The support frame is detachably connected to the base box.

7. The battery pack as described in claim 6, characterized in that, The base box includes a support plate, which is disposed on the side of the battery module opposite to the cover plate in the first direction; The battery pack also includes longitudinal supports and multiple transverse supports. Each transverse support and each longitudinal support is disposed on the side of the support plate facing the cover plate. Each transverse support extends along the second direction and is spaced apart in the third direction. The longitudinal support extends along the third direction. Each crossbeam is detachably connected to the transverse support, and each longitudinal beam is detachably connected to the longitudinal support.

8. The battery pack as described in claim 7, characterized in that, The battery pack also includes an auxiliary support, which is disposed on the side of the support plate facing the cover plate, and the fastening bracket is detachably connected to the auxiliary support.

9. The battery pack as described in claim 7, characterized in that, The base box also includes a frame connected to the support plate, the frame being disposed on the periphery of the support plate and extending from the support plate toward the cover plate; Wherein, at least one end of the frame located in the second direction is provided with a mating groove, the mating groove is in communication with the receiving cavity, and at least a portion of the fastening bracket is received in the mating groove to seal the mating groove.

10. The battery pack as claimed in claim 9, characterized in that, The inner side of the mating groove is recessed with a sealing groove, and the fastening bracket has a protrusion on one side facing the mating groove, the protrusion engaging with the sealing groove.

11. The battery pack as claimed in claim 10, characterized in that, The battery pack also includes a sealing sheet disposed between the protrusion and the sealing groove, and the fastening bracket is detachably connected to the frame.

12. The battery pack as claimed in claim 1, characterized in that, The battery pack also includes a lifting component that is detachably connected to the mounting bracket.

13. An electrical appliance, characterized in that, include: The battery pack as described in any one of claims 1-12.

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