Battery pack and electric equipment

Abstract

The embodiment of the invention provides a battery pack and electric equipment, and relates to the technical field of batteries. The battery pack comprises a shell, a battery module, a reinforcing structure and a buffer structure, the shell is provided with a handle, and the handle is provided with an annular mounting part; the battery module is arranged in the shell, and the battery module and the annular mounting part are arranged at an interval; the reinforcing structure sleeves the annular mounting part and is connected with the shell, and the reinforcing structure and the battery module are arranged at an interval; the buffer structure is arranged on the battery module and located on the side, close to the reinforcing structure, of the battery module, and the buffer structure abuts against the reinforcing structure. The reinforcing structure is arranged on the annular mounting part of the handle, and the reinforcing structure is connected with the shell, so that an integral reinforcing structural part can be formed, and the structural strength of the handle is effectively improved; meanwhile, the buffer structure is arranged on one side of the battery module and abuts against the reinforcing structure, so that lateral extrusion force from the handle can be effectively absorbed and dispersed, the extrusion resistance of the handle is improved, and the safety of the battery pack is improved.

Description

Technical Field

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

[0002] In light electric vehicles (such as electric-assisted bicycles and electric scooters), battery packs are typically designed to be miniaturized. To facilitate disassembly and assembly, battery packs are generally equipped with handle structures.

[0003] However, existing handle designs primarily focus on ease of installation and carrying, resulting in insufficient connection strength between the handle and the battery pack body. In actual use, the handle is prone to structural breakage or deformation due to lateral forces, which can then compress the internal battery modules. This structural defect can lead to short circuits in the battery cells and even cause serious safety hazards such as fires and explosions. Summary of the Invention

[0004] The purpose of this invention is to provide a battery pack and electrical device that can improve the structural strength and compression resistance of the handle, thereby enhancing the safety of the battery pack.

[0005] The embodiments of the present invention are implemented as follows: In a first aspect, the present invention provides a battery pack, comprising: The housing is provided with a handle, and the handle is provided with an annular mounting portion; A battery module, wherein the battery module is disposed within the housing and is spaced apart from the annular mounting portion; A reinforcing structure is sleeved on the annular mounting portion and connected to the housing; the reinforcing structure is spaced apart from the battery module. A buffer structure is disposed on the battery module and located on the side of the battery module close to the reinforcing structure, and the buffer structure abuts against the reinforcing structure.

[0006] In an optional embodiment, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are connected, and the battery module is disposed between the upper housing and the lower housing; The handle includes an upper handle and a lower handle, the upper handle is connected to the lower handle, the upper handle is disposed on the upper housing, the lower handle is disposed on the lower housing, and the lower handle is provided with the annular mounting portion; the reinforcing structure is connected to at least one of the upper housing and the lower housing.

[0007] In an optional embodiment, the reinforcing structure includes a first annular reinforcing plate, a second annular reinforcing plate, a first fastener, and a second fastener. The first annular reinforcing plate and the second annular reinforcing plate are both sleeved on the annular mounting portion, and the first annular reinforcing plate and the second annular reinforcing plate are spaced apart. The first annular reinforcing plate is connected to the upper housing via the first fastener, and the second annular reinforcing plate is connected to the lower housing via the second fastener. The buffer structure simultaneously abuts against both the first annular reinforcing plate and the second annular reinforcing plate.

[0008] In an optional embodiment, the battery module includes a first fixing bracket, a second fixing bracket, and a plurality of battery cells, wherein the first fixing bracket is connected to the second fixing bracket, and the plurality of battery cells are disposed between the first fixing bracket and the second fixing bracket; The reinforcing structure is spaced apart from the first fixed bracket and the second fixed bracket, and the buffer structure is connected to both the first fixed bracket and the second fixed bracket, and is located on the side of the first fixed bracket and the second fixed bracket closer to the reinforcing structure.

[0009] In an optional embodiment, the buffer structure includes a buffer plate, a third fastener, and a fourth fastener. The buffer plate is located on the side of the first fixed bracket and the second fixed bracket near the reinforcing structure. One end of the buffer plate is connected to the first fixed bracket via the third fastener, and the other end of the buffer plate is connected to the second fixed bracket via the fourth fastener. The reinforcing structure abuts against the buffer plate.

[0010] In an optional embodiment, the buffer plate is arc-shaped, and the arc-shaped buffer plate has an arc-shaped convex surface and an arc-shaped concave surface arranged opposite to each other. The arc-shaped concave surface is located on the side of the arc-shaped buffer plate close to the first fixed bracket and the second fixed bracket, and the arc-shaped convex surface abuts against the reinforcing structure.

[0011] In an optional embodiment, one of the buffer plate and the first fixed bracket is provided with a first slot, and the other of the buffer plate and the first fixed bracket is provided with a first engaging protrusion, the first engaging protrusion being disposed in the first slot; and / or, One of the buffer plate and the second fixed bracket is provided with a second slot, and the other of the buffer plate and the second fixed bracket is provided with a second snap-fit ​​protrusion, which is disposed in the second slot.

[0012] In an optional embodiment, the battery module further includes a first wrapping structure and a second wrapping structure. The first wrapping structure is disposed on the side of the first fixing bracket close to the second fixing bracket, and the second wrapping structure is disposed on the side of the second fixing bracket close to the first fixing bracket, and the second wrapping structure abuts against the first wrapping structure. The first packaging structure is provided with a first packaging groove, and the second packaging structure is provided with a second packaging groove, with the first packaging groove and the second packaging groove being correspondingly arranged; a part of the battery cell is disposed in the first packaging groove, and another part of the battery cell is disposed in the second packaging groove; the buffer structure simultaneously abuts against both the first packaging structure and the second packaging structure.

[0013] In an optional embodiment, the first packaging structure is further provided with a first mounting hole, and the second packaging structure is further provided with a second mounting hole, the second mounting hole being provided in correspondence with the first mounting hole; The battery module also includes a reinforcing post, which passes through both the first mounting hole and the second mounting hole.

[0014] Secondly, the present invention provides an electrical device including a battery pack as described in any of the foregoing embodiments.

[0015] The beneficial effects of the embodiments of the present invention include: The battery pack provided in this embodiment, by providing a reinforcing structure at the annular mounting portion of the handle and connecting the reinforcing structure to the housing, forms a rigid integral structure with the handle, reinforcing structure, and housing. This transforms the handle from a weak point into a reinforced structural component, effectively improving the handle's structural strength. Simultaneously, by providing a buffer structure on one side of the battery module, which abuts against the reinforcing structure, the lateral compressive force from the handle can be effectively absorbed and dispersed, improving the handle's resistance to compression and thus effectively protecting the battery module and enhancing the safety of the battery pack.

[0016] Electrical equipment includes a battery pack, which has all the beneficial effects of that battery pack. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of the present invention; Figure 2 An exploded view of a battery pack provided in an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of a battery pack provided in an embodiment of the present invention; Figure 4 A schematic diagram of the reinforcing structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the assembly of the battery module and the buffer structure provided in an embodiment of the present invention; Figure 6 An exploded view of a battery module provided in an embodiment of the present invention; Figure 7 A schematic diagram of the buffer structure provided in an embodiment of the present invention; Figure 8 This is an exploded view of a portion of the battery module structure provided in an embodiment of the present invention.

[0019] Icons: 100-Battery pack; 10-Housing; 11-Upper housing; 12-Lower housing; 13-Sixth fastener; 20-Handle; 21-Upper handle; 22-Lower handle; 23-Annular mounting part; 30-Battery module; 31-First fixing bracket; 311-First slot; 312-First fixing groove; 32-Second fixing bracket; 321-Second slot; 322-Second fixing groove; 33-Battery cell; 34-First wrapping structure; 341-First wrapping groove; 342-First mounting hole; 35-Second wrapping structure; 351-Second... Encasing groove; 352-Second mounting hole; 36-Reinforcing post; 37-First connecting post; 38-Second connecting post; 39-Fifth fastener; 40-Reinforcing structure; 41-First annular reinforcing plate; 42-Second annular reinforcing plate; 43-First fastener; 44-Second fastener; 50-Buffer structure; 51-Buffer plate; 511-Arc-shaped convex surface; 512-Arc-shaped concave surface; 513-First snap-fit ​​protrusion; 514-Second snap-fit ​​protrusion; 52-Third fastener; 53-Fourth fastener; 61-First buffer pad; 62-Second buffer pad. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] As described in the background section, existing battery pack handles primarily focus on ease of installation and carrying, resulting in insufficient connection strength between the handle and the battery pack body. In actual use, the handle is prone to structural breakage or deformation due to lateral forces, which can then compress the internal battery modules. This structural defect can lead to short circuits in the battery cells and even cause serious safety hazards such as fires and explosions.

[0027] Based on this, please refer to Figures 1-8The present invention provides a battery pack 100 and an electrical device that effectively improves the aforementioned technical problems. Specifically, it enhances the structural strength and compression resistance of the handle 20, thereby improving the safety of the battery pack 100. The battery pack 100 and the electrical device will be described in detail below.

[0028] This embodiment provides an electrical device, which includes a battery pack 100. The battery pack 100 is used to provide electrical energy to the electrical device, that is, the electrical device uses the battery pack 100 as a power source.

[0029] The electrical equipment may include, but is not limited to: backup power supplies, motors, electric motorcycles, electric bicycles, electric scooters, lighting fixtures, toys, game consoles, power tools, etc.

[0030] For example, when the electrical device is an electric scooter, the battery pack 100 can be installed at the bottom of the electric scooter to provide power to the electric scooter to meet its power needs for riding.

[0031] Please refer to Figures 1-3 , Figure 1 This is a schematic diagram of the structure of the battery pack 100 provided in this embodiment. Figure 2 This is an exploded view of the battery pack 100 provided in this embodiment. Figure 3 This is a partial structural diagram of the battery pack 100 provided in this embodiment, combined with... Figures 1-3 The battery pack 100 includes a housing 10, a battery module 30, a reinforcing structure 40, and a buffer structure 50. The housing 10 is provided with a handle 20, and the handle 20 is provided with an annular mounting portion 23; the battery module 30 is disposed inside the housing 10 and is spaced apart from the annular mounting portion 23; the reinforcing structure 40 is sleeved on the annular mounting portion 23 and connected to the housing 10, and the reinforcing structure 40 is spaced apart from the battery module 30; the buffer structure 50 is disposed on the battery module 30 and is located on the side of the battery module 30 closer to the reinforcing structure 40, and the buffer structure 50 abuts against the reinforcing structure 40.

[0032] It is easy to understand that by providing a reinforcing structure 40 at the annular mounting portion 23 of the handle 20 and connecting the reinforcing structure 40 to the housing 10, the handle 20, the reinforcing structure 40, and the housing 10 form a rigid integral structure. This transforms the handle 20 from a weak point into a reinforced structural component, effectively improving the structural strength of the handle 20. Simultaneously, by providing a buffer structure 50 on one side of the battery module 30 and abutting against the reinforcing structure 40, when the handle 20 is subjected to lateral pressure, the pressure is directly transmitted to the buffer structure 50 through the reinforcing structure 40. The buffer structure 50 effectively absorbs and disperses the lateral pressure from the handle 20, improving the handle 20's resistance to compression, thereby effectively protecting the battery module 30 and enhancing the safety of the battery pack 100.

[0033] It should be noted that the lateral direction mentioned above is the first direction, and this first direction is... Figures 1-3 The X direction shown in the figure means that the lateral compressive force is the compressive force in the X direction. Of course, when the battery pack 100 is placed in a normal position, the X direction can also be understood as the horizontal direction.

[0034] Combination Figure 2 and Figure 3 Specifically, the housing 10 includes an upper housing 11 and a lower housing 12, which are connected. The battery module 30 is disposed between the upper housing 11 and the lower housing 12. The handle 20 includes an upper handle 21 and a lower handle 22, which are connected. The upper handle 21 is disposed on the upper housing 11, and the lower handle 22 is disposed on the lower housing 12. The lower handle 22 is provided with an annular mounting portion 23. The reinforcing structure 40 is connected to at least one of the upper housing 11 and the lower housing 12.

[0035] It should be noted that in this embodiment, the reinforcing structure 40 is connected and fixed to both the upper housing 11 and the lower housing 12. When the handle 20 is subjected to lateral compression, the compressive force can be transmitted to the upper housing 11 and the lower housing 12 through the reinforcing structure 40, further reducing the deformation of the handle 20 and preventing breakage. This improves the structural strength and compression resistance of the handle 20. Of course, in other embodiments, the reinforcing structure 40 may be connected only to the upper housing 11 or only to the lower housing 12.

[0036] Further, please refer to Figure 4 , Figure 4 This is a schematic diagram of the reinforcing structure 40 provided in this embodiment, combined with... Figures 2-4The reinforcing structure 40 includes a first annular reinforcing plate 41, a second annular reinforcing plate 42, a first fastener 43, and a second fastener 44. Both the first annular reinforcing plate 41 and the second annular reinforcing plate 42 are sleeved on the annular mounting portion 23, and are spaced apart. The first annular reinforcing plate 41 is connected to the upper housing 11 via the first fastener 43, and the second annular reinforcing plate 42 is connected to the lower housing 12 via the second fastener 44. The buffer structure 50 simultaneously abuts against both the first annular reinforcing plate 41 and the second annular reinforcing plate 42.

[0037] By setting the first annular reinforcing plate 41 and the second annular reinforcing plate 42, and cooperating with the first fastener 43 and the second fastener 44 respectively, a better integrated reinforced structure can be formed with the upper housing 11 and the lower housing 12. In this way, the compressive force on the first annular reinforcing plate 41 and the second annular reinforcing plate 42 can be transmitted to the upper housing 11 and the lower housing 12 respectively, improving the structural strength and compressive resistance of the handle 20; on the other hand, it can also be transmitted to the buffer structure 50, so that the compressive force can be absorbed and dispersed more evenly by the buffer structure 50, further improving the buffering effect, thereby ensuring the safety of the battery module 30.

[0038] It should be noted that in this embodiment, both the first fastener 43 and the second fastener 44 are screws; of course, in other embodiments, the first fastener 43 and the second fastener 44 may also be bolts, rivets or buckles, etc.; in addition, in some embodiments, the first annular reinforcing plate 41 and the second annular reinforcing plate 42 may also be connected and fixed to the upper housing 11 and the lower housing 12 respectively by bonding or welding.

[0039] In addition, it should be noted that the first annular reinforcing plate 41 and the second annular reinforcing plate 42 in this embodiment are both sheet metal parts, which can be made of steel, iron, aluminum alloy, magnesium alloy and other materials.

[0040] Furthermore, in this embodiment, there is only one first annular reinforcing plate 41 and one second annular reinforcing plate 42. Of course, in order to further improve the structural strength and compression resistance of the handle 20, there can be multiple first annular reinforcing plates 41 and multiple second annular reinforcing plates 42, such as two or three. Multiple first annular reinforcing plates 41 are connected to the upper housing 11 through first fasteners 43, and multiple second annular reinforcing plates 42 are connected to the lower housing 12 through second fasteners 44.

[0041] Please refer to Figure 5 and Figure 6 , Figure 5 This is an assembly diagram of the battery module 30 and the buffer structure 50 provided in this embodiment. Figure 6This is an exploded view of the battery module 30 provided in this embodiment. (Combined with...) Figure 2 , Figure 5 and Figure 6 Specifically, the battery module 30 includes a first fixing bracket 31, a second fixing bracket 32, and a plurality of battery cells 33. The first fixing bracket 31 is connected to the second fixing bracket 32, and the plurality of battery cells 33 are disposed between the first fixing bracket 31 and the second fixing bracket 32. The reinforcing structure 40 is spaced apart from the first fixing bracket 31 and the second fixing bracket 32, and the buffer structure 50 is connected to both the first fixing bracket 31 and the second fixing bracket 32, and is located on the side of the first fixing bracket 31 and the second fixing bracket 32 ​​closer to the reinforcing structure 40.

[0042] It is easy to understand that by connecting and fixing the buffer structure 50 to both the first fixed bracket 31 and the second fixed bracket 32, the lateral pressure on the handle 20 is absorbed and dispersed by the buffer structure 50 before being transferred to the first fixed bracket 31 and the second fixed bracket 32 ​​respectively. This can more effectively protect the battery cell 33 and improve the safety of the battery pack 100.

[0043] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the buffer structure 50 provided in this embodiment, combined with... Figures 5-7 The buffer structure 50 includes a buffer plate 51, a third fastener 52, and a fourth fastener 53. The buffer plate 51 is located on the side of the first fixed bracket 31 and the second fixed bracket 32 ​​near the reinforcing structure 40. One end of the buffer plate 51 is connected to the first fixed bracket 31 through the third fastener 52, and the other end of the buffer plate 51 is connected to the second fixed bracket 32 ​​through the fourth fastener 53. The reinforcing structure 40 abuts against the buffer plate 51.

[0044] Combination Figure 4 and Figure 7 Specifically, in this embodiment, both the first annular reinforcing plate 41 and the second annular reinforcing plate 42 abut against the buffer plate 51. It should be noted that the third fastener 52 and the fourth fastener 53 in this embodiment are also screws; of course, in other embodiments, the third fastener 52 and the fourth fastener 53 can also be bolts, rivets, or clips, etc.; similarly, the two ends of the buffer plate 51 can also be connected and fixed to the first fixed bracket 31 and the second fixed bracket 32 ​​respectively by bonding or welding.

[0045] In addition, it should be noted that the buffer plate 51 in this embodiment is specifically an aluminum plate. Of course, in other embodiments, the material of the buffer plate 51 can also be cast iron, high-strength plastic or composite material, etc.

[0046] Combination Figure 2 , Figure 5 and Figure 7 The buffer plate 51 is specifically arc-shaped. The arc-shaped buffer plate 51 has an arc-shaped convex surface 511 and an arc-shaped concave surface 512 arranged opposite to each other. The arc-shaped concave surface 512 is located on the side of the arc-shaped buffer plate 51 close to the first fixed bracket 31 and the second fixed bracket 32. The arc-shaped convex surface 511 abuts against the reinforcing structure 40.

[0047] In other words, the side of the buffer plate 51 can be understood as protruding towards the reinforcing structure 40. With this arrangement, the lateral extrusion force directly extrudes the arc-shaped convex surface 511 through the reinforcing structure 40. During the extrusion process, the buffer plate 51 undergoes a certain deformation at both ends along the second direction, and the deformation direction of these two ends is towards the reinforcing structure 40, which can also be understood as deformation away from the battery cell 33. In this way, the battery cell 33 can be further protected, and the overall safety of the battery pack 100 can be improved.

[0048] It should be noted that the second direction mentioned above is... Figures 1-8 The Y direction is shown in the figure. Of course, in other embodiments, the shape of the buffer plate 51 can also be rectangular, L-shaped, T-shaped or other irregular structure. Its specific shape can be determined according to the design requirements of the battery pack 100 and the internal space layout of the housing 10, as long as it meets the requirements of maximizing space utilization and optimizing the transmission of extrusion force.

[0049] Further, please refer to Figure 8 , Figure 8 This is a partially exploded view of the battery module 30 provided in this embodiment, combined with... Figures 6-8 In order to facilitate the installation and fixation of the buffer plate 51 and the first fixed bracket 31 and improve the installation stability of the two, one of the buffer plate 51 and the first fixed bracket 31 is provided with a first slot 311, and the other of the buffer plate 51 and the first fixed bracket 31 is provided with a first snap-fit ​​protrusion 513. The first snap-fit ​​protrusion 513 is provided in the first slot 311.

[0050] It should be noted that in this embodiment, the buffer plate 51 is provided with a first snap-fit ​​protrusion 513, and the first fixed bracket 31 is provided with a first snap-fit ​​groove 311. Of course, in other embodiments, the first fixed bracket 31 may also be provided with a first snap-fit ​​protrusion 513, and the buffer plate 51 may be provided with a first snap-fit ​​groove 311. Furthermore, there may be multiple first snap-fit ​​protrusions 513 and multiple first snap-fit ​​grooves 311, all of which are spaced apart along the second direction, and each of the multiple first snap-fit ​​protrusions 513 corresponds one-to-one with the multiple first snap-fit ​​grooves 311. For example, in this embodiment, there are two first snap-fit ​​protrusions 513 and two first snap-fit ​​grooves 311. Of course, in other embodiments, there may also be one, three, or four first snap-fit ​​protrusions 513 and four first snap-fit ​​grooves, etc.

[0051] Similarly, in order to facilitate the installation and fixation of the buffer plate 51 and the second fixed bracket 32, one of the buffer plate 51 and the second fixed bracket 32 ​​is provided with a second slot 321, and the other of the buffer plate 51 and the second fixed bracket 32 ​​is provided with a second snap-fit ​​protrusion 514, which is located in the second slot 321.

[0052] It should also be noted that in this embodiment, the buffer plate 51 is provided with a second snap-fit ​​protrusion 514, and the second fixed bracket 32 ​​is provided with a second snap-fit ​​groove 321. Of course, in other embodiments, the second fixed bracket 32 ​​may also be provided with a second snap-fit ​​protrusion 514, and the buffer plate 51 may be provided with a second snap-fit ​​groove 321. Furthermore, there may be multiple second snap-fit ​​protrusions 514 and multiple second snap-fit ​​grooves 321, all of which are spaced apart along the second direction, and each of the multiple second snap-fit ​​protrusions 514 corresponds one-to-one with the multiple second snap-fit ​​grooves 321. For example, in this embodiment, there are two second snap-fit ​​protrusions 514 and two snap-fit ​​grooves 321. Of course, in other embodiments, there may be one, three, or four second snap-fit ​​protrusions 514 and two snap-fit ​​grooves 321, etc.

[0053] Combination Figure 6 and Figure 8 Since the buffer structure 50 is located on one side of the multiple battery cells 33, in order to protect the battery cells 33 located at the position of the buffer structure 50 and further improve the safety of the battery pack 100, in this embodiment, the battery module 30 also includes a first wrapping structure 34 and a second wrapping structure 35. The first wrapping structure 34 is located on the side of the first fixed bracket 31 near the second fixed bracket 32, and the second wrapping structure 35 is located on the side of the second fixed bracket 32 ​​near the first fixed bracket 31, and the second wrapping structure 35 abuts against the first wrapping structure 34.

[0054] The first wrapping structure 34 is provided with a first wrapping groove 341, and the second wrapping structure 35 is provided with a second wrapping groove 351. The first wrapping groove 341 and the second wrapping groove 351 are correspondingly arranged. A part of the battery cell 33 is disposed in the first wrapping groove 341, and another part of the battery cell 33 is disposed in the second wrapping groove 351. The buffer structure 50 abuts against both the first wrapping structure 34 and the second wrapping structure 35.

[0055] Specifically, in this embodiment, the buffer plate 51 simultaneously abuts against both the first wrapping structure 34 and the second wrapping structure 35. It is understood that there can be multiple first wrapping slots 341 and second wrapping slots 351, the specific number of which needs to be determined based on the size of the buffer plate 51. Furthermore, it is necessary to ensure that all battery cells 33 within the area covered by the buffer plate 51 can be wrapped and protected by the first wrapping structure 34 and the second wrapping structure 35.

[0056] It should be noted that in this embodiment, both the first wrapping structure 34 and the second wrapping structure 35 are made of high-performance engineering plastics for full-coverage plastic injection molding. It is easy to understand that the plastic wrapping structure not only provides excellent insulation and protection, but more importantly, when subjected to compression, the plastic material can undergo a certain degree of elastic deformation, buffering the extrusion force and evenly distributing the point load to a larger area of ​​the battery cell 33 surface, preventing the battery cell 33 from being punctured due to excessive local stress, and further improving safety.

[0057] In addition, in order to facilitate the installation and fixing of the battery cell 33 that is not in the first wrapping groove 341 and the second wrapping groove 351, the first fixing bracket 31 is also provided with a plurality of first fixing grooves 312, and the second fixing bracket 32 ​​is also provided with a plurality of second fixing grooves 322. The plurality of first fixing grooves 312 and the plurality of second fixing grooves 322 correspond one-to-one, and the two ends of the battery cell 33 are respectively set in the first fixing groove 312 and the second fixing groove 322.

[0058] Furthermore, to improve the vertical compression resistance of the battery pack 100 and enhance its overall structural rigidity and bending strength, in this embodiment, the first wrapping structure 34 is further provided with a first mounting hole 342, and the second wrapping structure 35 is further provided with a second mounting hole 352, which are correspondingly provided with the first mounting hole 342. The battery module 30 also includes a reinforcing post 36, which passes through both the first mounting hole 342 and the second mounting hole 352.

[0059] It should be noted that the vertical direction mentioned above refers to a third direction, which is... Figures 1-8 The Z direction shown can also be understood as the vertical direction. It's easy to understand that the first, second, and third directions mentioned above are all perpendicular to each other; that is, the X, Y, and Z directions are all perpendicular to each other.

[0060] To further improve the vertical compression resistance of the battery pack 100, the number of reinforcing posts 36, the first mounting hole 342 and the second mounting hole 352 can be multiple. For example, in this embodiment, the number of reinforcing posts 36 is four. Of course, in other embodiments, the number of reinforcing posts 36, the first mounting hole 342 and the second mounting hole 352 can also be one, two or three, etc.

[0061] In addition, it should be noted that there are no restrictions on the material of the reinforcing column 36. It can be a steel column, a titanium alloy column, a carbon fiber rod, or a high-strength engineering plastic column, etc., as long as it can improve the overall structural rigidity and bending strength of the battery pack 100.

[0062] Please continue to combine Figure 2Similarly, to improve the vertical compression resistance of the battery module 30, in this embodiment, the battery pack 100 further includes a first buffer pad 61 and a second buffer pad 62. The first buffer pad 61 is disposed between the upper housing 11 and the battery module 30, and the second buffer pad 62 is disposed between the lower housing 12 and the battery module 30. Specifically, in this embodiment, the first buffer pad 61 is disposed between the upper housing 11 and the first fixed bracket 31, and the second buffer pad 62 is disposed between the lower housing 12 and the second fixed bracket 32.

[0063] Please continue to combine Figure 6 In order to improve the connection stability between the first fixed bracket 31 and the second fixed bracket 32 ​​and further improve the overall compression resistance of the battery pack 100, in this embodiment, the battery module 30 also includes a first connecting post 37, a second connecting post 38 and a fifth fastener 39. The first connecting post 37 is disposed on the side of the first fixed bracket 31 near the second fixed bracket 32, and the second connecting post 38 is disposed on the side of the second fixed bracket 32 ​​near the first fixed bracket 31. The first connecting post 37 and the second connecting post 38 abut against each other, and the first connecting post 37 is connected and fixed to the second connecting post 38 by the fifth fastener 39.

[0064] It should be noted that in this embodiment, the first fixing bracket 31, the first wrapping structure 34, and the first connecting post 37 are integrally formed, as are the second fixing bracket 32, the second wrapping structure 35, and the second connecting post 38. This integral forming design further improves the overall structural strength of the battery module 30, enhances its lightweight nature, increases production efficiency, and reduces manufacturing costs.

[0065] In addition, combined Figure 2 In order to facilitate the connection between the upper housing 11 and the lower housing 12, the housing 10 also includes a sixth fastener 13, through which the upper housing 11 is connected and fixed to the lower housing 12.

[0066] Similarly, it should be noted that in this embodiment, both the fifth fastener 39 and the sixth fastener 13 are screws; of course, in other embodiments, the fifth fastener 39 and the sixth fastener 13 may also be bolts, rivets or clips, etc.; in addition, in some embodiments, the first connecting post 37 and the second connecting post 38, and the upper housing 11 and the lower housing 12 may also be connected and fixed by bonding or welding.

[0067] In summary, embodiments of the present invention provide a battery pack 100 and an electrical device. The battery pack 100 includes a housing 10, a battery module 30, a reinforcing structure 40, and a buffer structure 50. The housing 10 has a handle 20 with an annular mounting portion 23. The battery module 30 is disposed within the housing 10 and spaced apart from the annular mounting portion 23. The reinforcing structure 40 is sleeved on the annular mounting portion 23 and connected to the housing 10, with the reinforcing structure 40 spaced apart from the battery module 30. The buffer structure 50 is disposed on the battery module 30 and located on the side of the battery module 30 closest to the reinforcing structure 40, and abuts against the reinforcing structure 40. By providing the reinforcing structure 40 in the annular mounting portion 23 of the handle 20 and connecting the reinforcing structure 40 to the housing 10, the handle 20, the reinforcing structure 40, and the housing 10 form a rigid integral structure, transforming the handle 20 from a weak point into a reinforced structural component, effectively improving the structural strength of the handle 20. Meanwhile, by setting a buffer structure 50 on one side of the battery module 30 and abutting against the reinforcing structure 40, the lateral squeezing force from the handle 20 can be effectively absorbed and dispersed, improving the squeezing resistance of the handle 20, thereby effectively protecting the battery module 30 and enhancing the safety of the battery pack 100.

[0068] Furthermore, by setting the first wrapping structure 34, the second wrapping structure 35, and the reinforcing column 36, they can work together with the reinforcing structure 40 and the buffer structure 50 to form a multi-level anti-compression structure, achieving multi-level protection and improving the overall performance of the battery pack 100 against lateral and vertical compression, more effectively protecting the battery cell 33 and further improving the safety of the battery pack 100.

[0069] The electrical equipment includes a battery pack 100, which has all the functions and benefits of the battery pack 100.

[0070] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery pack, characterized in that, include: The housing (10) is provided with a handle (20) and the handle (20) is provided with an annular mounting part (23). A battery module (30) is disposed inside the housing (10) and spaced apart from the annular mounting portion (23); A reinforcing structure (40) is sleeved on the annular mounting part (23) and connected to the housing (10). The reinforcing structure (40) is spaced apart from the battery module (30). as well as A buffer structure (50) is disposed on the battery module (30) and located on the side of the battery module (30) close to the reinforcing structure (40), and the buffer structure (50) abuts against the reinforcing structure (40).

2. The battery pack according to claim 1, characterized in that, The housing (10) includes an upper housing (11) and a lower housing (12), the upper housing (11) and the lower housing (12) are connected, and the battery module (30) is disposed between the upper housing (11) and the lower housing (12); The handle (20) includes an upper handle (21) and a lower handle (22). The upper handle (21) is connected to the lower handle (22). The upper handle (21) is disposed on the upper housing (11), and the lower handle (22) is disposed on the lower housing (12). The lower handle (22) is provided with the annular mounting portion (23). The reinforcing structure (40) is connected to at least one of the upper housing (11) and the lower housing (12).

3. The battery pack according to claim 2, characterized in that, The reinforcing structure (40) includes a first annular reinforcing plate (41), a second annular reinforcing plate (42), a first fastener (43), and a second fastener (44). The first annular reinforcing plate (41) and the second annular reinforcing plate (42) are both sleeved on the annular mounting portion (23), and the first annular reinforcing plate (41) and the second annular reinforcing plate (42) are spaced apart. The first annular reinforcing plate (41) is connected to the upper housing (11) via the first fastener (43), and the second annular reinforcing plate (42) is connected to the lower housing (12) via the second fastener (44). The buffer structure (50) simultaneously abuts against both the first annular reinforcing plate (41) and the second annular reinforcing plate (42).

4. The battery pack according to claim 1, characterized in that, The battery module (30) includes a first fixed bracket (31), a second fixed bracket (32), and a plurality of battery cells (33). The first fixed bracket (31) is connected to the second fixed bracket (32), and the plurality of battery cells (33) are disposed between the first fixed bracket (31) and the second fixed bracket (32). The reinforcing structure (40) is spaced apart from the first fixed bracket (31) and the second fixed bracket (32). The buffer structure (50) is connected to both the first fixed bracket (31) and the second fixed bracket (32) and is located on the side of the first fixed bracket (31) and the second fixed bracket (32) closer to the reinforcing structure (40).

5. The battery pack according to claim 4, characterized in that, The buffer structure (50) includes a buffer plate (51), a third fastener (52) and a fourth fastener (53). The buffer plate (51) is located on the side of the first fixed bracket (31) and the second fixed bracket (32) close to the reinforcing structure (40). One end of the buffer plate (51) is connected to the first fixed bracket (31) through the third fastener (52), and the other end of the buffer plate (51) is connected to the second fixed bracket (32) through the fourth fastener (53). The reinforcing structure (40) abuts against the buffer plate (51).

6. The battery pack according to claim 5, characterized in that, The buffer plate (51) is arc-shaped, and the arc-shaped buffer plate (51) has an arc-shaped convex surface (511) and an arc-shaped concave surface (512) arranged opposite to each other. The arc-shaped concave surface (512) is located on the side of the arc-shaped buffer plate (51) close to the first fixed bracket (31) and the second fixed bracket (32). The arc-shaped convex surface (511) abuts against the reinforcing structure (40).

7. The battery pack according to claim 5, characterized in that, One of the buffer plate (51) and the first fixed bracket (31) is provided with a first slot (311), and the other of the buffer plate (51) and the first fixed bracket (31) is provided with a first engaging protrusion (513), the first engaging protrusion (513) being disposed in the first slot (311); and / or, One of the buffer plate (51) and the second fixed bracket (32) is provided with a second slot (321), and the other of the buffer plate (51) and the second fixed bracket (32) is provided with a second snap-fit ​​protrusion (514), which is disposed in the second slot (321).

8. The battery pack according to claim 4, characterized in that, The battery module (30) further includes a first wrapping structure (34) and a second wrapping structure (35). The first wrapping structure (34) is disposed on the side of the first fixed bracket (31) near the second fixed bracket (32), and the second wrapping structure (35) is disposed on the side of the second fixed bracket (32) near the first fixed bracket (31), and the second wrapping structure (35) abuts against the first wrapping structure (34). The first packaging structure (34) is provided with a first packaging groove (341), and the second packaging structure (35) is provided with a second packaging groove (351). The first packaging groove (341) and the second packaging groove (351) are correspondingly arranged. A part of the battery cell (33) is disposed in the first packaging groove (341), and another part of the battery cell (33) is disposed in the second packaging groove (351). The buffer structure (50) simultaneously abuts against both the first packaging structure (34) and the second packaging structure (35).

9. The battery pack according to claim 8, characterized in that, The first wrapping structure (34) is further provided with a first mounting hole (342), and the second wrapping structure (35) is further provided with a second mounting hole (352), the second mounting hole (352) being provided in correspondence with the first mounting hole (342); The battery module (30) also includes a reinforcing post (36), which passes through both the first mounting hole (342) and the second mounting hole (352).

10. An electrical appliance, characterized in that, Includes the battery pack (100) as described in any one of claims 1-9.

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