Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are intersected, the battery pack comprises a box body and a protection assembly, the box body has an accommodating space, the box body comprises a bottom plate, the bottom plate is arranged on one side of the accommodating space along the second direction, and the bottom plate is used for forming the accommodating space in a surrounding manner; the protection assembly comprises a protection plate and a reinforcing piece, and the protection plate is arranged on the side, away from the containing space, of the bottom plate in the second direction and connected with the bottom plate. The protection plate is provided with a containing cavity which penetrates through the side, facing the bottom plate, of the protection plate. The reinforcer is at least partially arranged in the accommodating cavity and is connected with the protection plate; the reinforcing part comprises a plurality of protrusions which are arranged at intervals in the first direction, a first groove is formed between every two adjacent protrusions, and the first grooves are formed in the side, facing the protection plate in the second direction, of the reinforcing part. According to the battery pack, the plurality of bulges are matched with the first grooves, so that the transmission and absorption of impact along the arrangement direction of the bulges are realized, and the overall mechanical reliability of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery pack and a power utilization device. BACKGROUND

[0002] The battery pack usually comprises a plurality of single batteries connected in series and in parallel, wherein the plurality of single batteries are usually arranged in a box body to protect the single batteries by the box body. In order to improve the light weight of the battery pack, the thickness of the box body is usually thin. When the battery pack is impacted by external force, the mechanical performance of the box body is not high, and the safety risk of the battery pack exists. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the problem of the low mechanical performance of the box body of the existing battery pack and the safety risk of the battery pack. Another object of the utility model is to provide a power utilization device.

[0004] TECHNICAL SCHEME: The battery pack provided by the utility model has a first direction and a second direction intersecting each other, and comprises:

[0005] A box body has a containing space. The bottom plate is arranged on one side of the containing space along the second direction. The bottom plate is used for enclosing the containing space.

[0006] A protection assembly comprises:

[0007] A protection plate is arranged on the side of the bottom plate away from the containing space along the second direction and connected with the bottom plate. The protection plate has a receiving cavity penetrating through the side of the protection plate facing the bottom plate.

[0008] A reinforcing member is arranged at least partially in the receiving cavity and connected with the protection plate. The reinforcing member comprises a plurality of protrusions. The plurality of protrusions are arranged at intervals along the first direction. A first groove is formed between two adjacent protrusions. The first groove is arranged on the side of the reinforcing member facing the protection plate along the second direction.

[0009] In some embodiments, the reinforcing member comprises a first body extending along the first direction. The protrusions are arranged on the side of the first body away from the bottom plate and connected with the first body. Two adjacent protrusions and the first body enclose the first groove.

[0010] In some embodiments, the reinforcing member has a second groove arranged on the side of the first body facing the bottom plate. The second groove is recessed towards the protrusions along the second direction.

[0011] In some embodiments, the reinforcement includes a plurality of first bodies arranged at intervals along the first direction, two adjacent first bodies are arranged on both sides of a protrusion along the first direction and connected to the protrusion, the first body is arranged on the side of the protrusion close to the base plate, and the two adjacent protrusions and one first body enclose the first groove.

[0012] In some embodiments, the reinforcement member has a second groove, and the second groove is arranged on a side of the protrusion facing the bottom plate.

[0013] In some embodiments, the protrusion is connected to the protection plate along the second direction toward one side of the protection plate.

[0014] In some embodiments, along the second direction, a portion of the reinforcement member located in the accommodating cavity is spaced apart from the bottom plate.

[0015] In some embodiments,

[0016] The reinforcement member has a first through hole, the first through hole passes through the reinforcement member along the second direction, and the first through hole is communicated with the accommodating cavity and the first groove respectively;

[0017] The protection plate has a second through hole, which passes through the protection plate along the second direction. The second through hole is communicated with the accommodating cavity and the first groove respectively.

[0018] In some embodiments, the protective component also includes a protective layer, which is arranged on the side of the protective plate away from the base plate, and the protective layer is adhered to the side of the protective plate away from the base plate; the protective layer has a third through hole, and the third through hole passes through the protective layer along the second direction, and the third through hole is connected to the second through hole.

[0019] In some embodiments,

[0020] The protection plate includes:

[0021] a second body, wherein the accommodating cavity is provided in the second body, and the accommodating cavity penetrates the second body along the second direction toward a side of the bottom plate;

[0022] a connecting plate, arranged around the second body and connected to the second body; the connecting plate is connected to the bottom plate; a plurality of third grooves are provided on a side of the connecting plate facing the bottom plate, and the plurality of third grooves are all connected to the accommodating cavity;

[0023] The reinforcing member comprises a plurality of fixing portions, each of the fixing portions is connected with the protrusion adjacent to the connecting plate, and at least part of each of the fixing portions is arranged in one of the third grooves and connected with the connecting plate.

[0024] In some embodiments, the battery pack comprises a plurality of the protection assemblies, and the plurality of the protection assemblies are connected with the bottom plate; at least one of the protection assemblies is arranged on a side of the bottom plate away from the accommodation space along the second direction and connected with the bottom plate.

[0025] Correspondingly, the power device comprises the battery pack according to any one of the preceding embodiments.

[0026] Advantages: Compared with the prior art, the battery pack according to the embodiments of the present application has the first direction and the second direction intersecting each other, comprises a box body and a protection assembly, the box body has an accommodation space, the box body comprises a bottom plate, the bottom plate is arranged on one side of the accommodation space along the second direction, and the bottom plate is used for enclosing the accommodation space; the protection assembly comprises a protection plate and a reinforcing member, the protection plate is arranged on a side of the bottom plate away from the accommodation space along the second direction and connected with the bottom plate; the protection plate has a receiving cavity, the receiving cavity penetrates through one side of the protection plate facing the bottom plate; the reinforcing member is at least partially arranged in the receiving cavity and connected with the protection plate; the reinforcing member comprises a plurality of protrusions, the plurality of protrusions are arranged at intervals along the first direction, a first groove is formed between two adjacent protrusions, and the first groove is arranged on a side of the reinforcing member facing the protection plate along the second direction. The protection assembly is arranged on the outside of the bottom plate of the box body, so as to improve the structural strength and the impact resistance of the battery pack as a whole. The protection plate has the receiving cavity to provide a buffering and energy-absorbing space, and the reinforcing member is used for structural reinforcement and further buffering and energy absorption. Meanwhile, the plurality of protrusions and the plurality of first grooves are arranged in cooperation with each other, which can not only ensure that the weight of the battery pack as a whole is as small as possible, but also can realize the transmission and absorption of local impact along the arrangement direction of the protrusions, so as to further improve the mechanical reliability of the battery pack, effectively reduce the impact on the inside of the battery pack along the arrangement direction of the protection assembly and the bottom plate, and achieve a good protection effect.

[0027] Compared with the prior art, the power device according to the embodiments of the present application comprises the battery pack according to any one of the preceding embodiments. It can be understood that the power device comprises all the technical features and technical effects of the battery pack, and details are not described herein. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating any labor.

[0029] Figure 1 This is a schematic diagram of the overall structure of a battery pack according to an embodiment of the present application;

[0030] Figure 2 is an exploded view of the protective assembly and the base plate of an embodiment of the present application;

[0031] Figure 3 is a cross-sectional view of a protection assembly and a bottom plate along a first direction according to an embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the overall structure of a protection component according to an embodiment of the present application;

[0033] Figure 5 is an exploded view of a protective component according to an embodiment of the present application;

[0034] Figure 6 This is a schematic structural diagram of a protective plate according to an embodiment of the present application;

[0035] Figure 7 This is a schematic structural diagram of a reinforcement member according to an embodiment of the present application;

[0036] Figure 8 is a cross-sectional view of another reinforcement member according to an embodiment of the present application;

[0037] Figure numerals: 1. box body; 11. accommodating cavity; 12. bottom plate; 2. protective assembly; 21. protective plate; 211. accommodating cavity; 212. second through hole; 213. second body; 214. connecting plate; 2141. third groove; 22. reinforcement; 221. protrusion; 222. first groove; 223. first body; 224. second groove; 225. first through hole; 226. fixing part; 23. protective layer; 231. third through hole; X, first direction; Z, second direction. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0039] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0040] A battery pack usually contains multiple single cells in a box. When the battery pack is impacted by external force, the box is easily deformed and may squeeze the single cells, posing a safety hazard.

[0041] In view of this, an embodiment of the present application provides a battery pack to solve the above-mentioned problems.

[0042] Please refer to Figures 1-5 , a battery pack according to an embodiment of the present application has a first direction X and a second direction Z intersecting each other, and includes a box body 1 and a protection assembly 2, the box body 1 has a accommodating space 11, the box body 1 includes a bottom plate 12, the bottom plate 12 is arranged on one side of the accommodating space 11 along the second direction Z, and the bottom plate 12 is used to enclose the accommodating space 11; the protection assembly 2 includes a protective plate 21 and a reinforcement 22, the protective plate 21 is arranged on a side of the bottom plate 12 away from the accommodating space 11 along the second direction Z and is connected to the bottom plate 12; the protective plate 21 has a accommodating cavity 211, the accommodating cavity 211 passes through the side of the protective plate 21 facing the bottom plate 12; the reinforcement 22 is at least partially arranged in the accommodating cavity 211 and is connected to the protective plate 21; the reinforcement 22 includes a plurality of protrusions 221, the plurality of protrusions 221 are arranged at intervals along the first direction X, and a first groove 222 is formed between two adjacent protrusions 221, and the first groove 222 is arranged on the side of the reinforcement 22 facing the protective plate 21 along the second direction Z.

[0043] In the embodiment of the present application, a protective assembly 2 is provided on the outside of the bottom plate 12 of the housing 1 to improve the structural strength and impact resistance of the battery pack as a whole. The protective plate 21 has a receiving cavity 211 to provide a buffering and energy-absorbing space, and the reinforcement 22 is used to reinforce the structure and further buffer and absorb energy. At the same time, the arrangement of multiple protrusions 221 connected and multiple first grooves 222 cooperating with each other can not only ensure that the overall weight of the battery pack is increased as little as possible, but also achieve the transmission and absorption of local impacts along the arrangement direction of the protrusions 221, thereby further improving the mechanical reliability of the battery pack and effectively reducing the impact on the interior of the battery pack along the arrangement direction of the protective assembly 2 and the bottom plate 12, thereby achieving a better protective effect.

[0044] Specifically, in this embodiment of the present application, the bottom plate 12 can be the bottom plate or side plate of the box body 1. The position of the protective assembly 2 is appropriately arranged according to the impact-receiving area or weak point of the battery pack. The protective plate 21 of the protective assembly 2 is provided with a receiving cavity 211, which provides deformation space for the plate body of the protective plate 21, thereby providing a buffering and energy absorption effect. This can reduce the impact on the bottom plate 12, thereby reducing the possibility of individual cells being squeezed and deformed, thereby improving the overall safety of the battery pack. The provision of the reinforcement 22 can improve the overall deformation resistance of the protective assembly 2 and further provide a buffering and energy absorption effect.

[0045] It is understood that the reinforcement 22 includes multiple protrusions 221, with first grooves 222 formed between each of the multiple protrusions 221. The multiple protrusions 221 can absorb external impacts and simultaneously transfer localized impact forces to adjacent protrusions 221. This gradually absorbs and reduces the impact force, effectively reducing deformation and damage to the base plate 12. The multiple first grooves 222 also provide deformation space for the protrusions 221, thereby reducing the impact on adjacent protrusions 221, effectively preventing large-scale deformation and further reducing the deformation impact on the base plate 12, thereby improving the safety of the battery pack.

[0046] Please refer to Figure 3 、 Figure 4 、 Figure 7 and Figure 8 In some embodiments, the reinforcement 22 includes a first body 223 extending along the first direction X, the protrusion 221 is arranged on a side of the first body 223 away from the base plate 12 and connected to the first body 223, and two adjacent protrusions 221 and the first body 223 enclose a first groove 222.

[0047] In the embodiment of the present application, by setting a first body 223, multiple protrusions 221 can be connected to form an integral reinforcement 22, which is more conducive to the transmission of external impact force within the reinforcement 22 after reaching the protrusion 221, thereby improving the overall buffering and energy absorption effect of the reinforcement 22.

[0048] It should be noted that, at this time, the reinforcement member 22 can be integrally injection molded.

[0049] Please refer to Figure 3 、 Figure 4 and Figure 7 In some embodiments, the reinforcement member 22 has a second groove 224 , which is disposed on a side of the first body 223 facing the bottom plate 12 , and the second groove 224 is recessed along the second direction Z toward the protrusion 221 .

[0050] In the embodiment of the present application, the arrangement of this structure can further improve the overall deformation and energy absorption capacity of the reinforcement 22 , thereby effectively improving the protection effect and reducing the possibility of deformation of the bottom plate 12 .

[0051] It is understandable that by setting the second groove 224, and the second groove 224 is recessed from the first body 223 toward the side of the plate body toward the protrusion 221, the second groove 224 can be only on the first body 223, or it can pass through the first body 223 and be recessed into the protrusion 221.

[0052] It should be noted that the deeper the second groove 224 is, the stronger the deformation ability of the corresponding reinforcement 22 is, and thus the better the buffering and energy absorption effect is.

[0053] Please refer to Figure 3 、 Figure 4 、 Figure 7 and Figure 8 In some embodiments, the reinforcement 22 includes a plurality of first bodies 223 spaced apart along the first direction X, two adjacent first bodies 223 are arranged on both sides of a protrusion 221 along the first direction X and connected to the protrusion 221, the first body 223 is arranged on a side of the protrusion 221 close to the bottom plate 12, and the two adjacent protrusions 221 and the first body 223 enclose a first groove 222.

[0054] In the embodiment of the present application, the plurality of first bodies 223 and the plurality of protrusions 221 are arranged in a staggered manner, achieving sequential connection of the plurality of protrusions 221. This allows for the impact of a localized protrusion 221 to be promptly transferred to the first bodies 223 and protrusions 221 on both sides along the first direction X, thereby achieving better buffering and energy absorption. Furthermore, the connection between each first body 223 and two adjacent protrusions 221 facilitates the direct formation of a first groove 222, facilitating deformation of the protrusion 221 into the first groove 222, minimizing the impact on adjacent protrusions 221, and thus reducing the deformation area.

[0055] Please refer to Figure 3 、 Figure 4 and Figure 7 In some embodiments, the reinforcement member 22 has a second groove 224 , and the second groove 224 is disposed on a side of the protrusion 221 facing the bottom plate 12 .

[0056] In the embodiment of the present application, the second groove 224 is used to further reduce the weight of the protrusion 221, while providing more deformation space for the protrusion 221 and improving the overall deformation ability of the reinforcement 22, thereby achieving a better buffering and energy absorption effect.

[0057] It will be appreciated that in the embodiment of the present application, the first body 223 is disposed on one side of the protrusion 221, while the second groove 224 is disposed directly on the side of the protrusion 221 facing the base plate 12. The deeper the second groove 224 is, the less material is used for the corresponding protrusion 221, the lighter the overall weight of the reinforcement 22, and the smaller the weight impact on the battery pack. Furthermore, the deeper the second groove 224 is, the greater the deformation ability of the corresponding protrusion 221 within the accommodating cavity 211, thereby improving the deformation energy absorption effect and providing better protection. Of course, without the second groove 224, the corresponding reinforcement 22 would have higher overall mechanical strength and higher deformation resistance, effectively absorbing external impact forces with less deformation, thus providing better protection and reducing the possibility of deformation of the base plate 12, thereby providing better protection for the entire battery pack.

[0058] It should be noted that, either only one first body 223 is provided to connect multiple protrusions 221 , or multiple first bodies 223 are provided to connect multiple protrusions 221 , both of which can achieve a better force transmission effect.

[0059] like Figure 3 As shown, in some embodiments, the protrusion 221 is connected to the protection plate 21 along the second direction Z toward one side of the protection plate 21 .

[0060] In the embodiment of the present application, the convex 221 is connected with the protection plate 21, so that the external impact force acting on the protection plate 21 can be directly transmitted to the convex 221, thereby dispersing, absorbing and buffering the impact force at the moment when the protection assembly 2 is impacted, and better protection is achieved.

[0061] Further, the convex 221 and the protection plate 21 can be connected by bolt locking or structural adhesive bonding, and further can be connected by welding, so as to ensure the stability of the connection between the protection plate 21 and the convex 221, thereby achieving better force transmission effect and reducing the vibration of the reinforcing member 22 in the accommodating cavity 211 and reducing abnormal sound.

[0062] As shown in Figure 3 , in some embodiments, along the second direction Z, the part of the reinforcing member 22 located in the accommodating cavity 211 is spaced apart from the bottom plate 12.

[0063] In the embodiment of the present application, the reinforcing member 22 is spaced apart from the bottom plate 12, so that when an external impact is received, the impact force transmitted in the reinforcing member 22 can be as small as possible to be transmitted to the bottom plate 12, thereby effectively protecting the bottom plate 12 and reducing the possibility of deformation of the bottom plate 12, thereby improving the safety of the battery pack. Of course, when the battery pack is normally used, the reinforcing member 22 does not contact the bottom plate 12, which can effectively reduce abnormal sound.

[0064] Please refer to Figures 5-7 , in some embodiments, the reinforcing member 22 has a first through hole 225, the first through hole 225 penetrates the reinforcing member 22 along the second direction Z, and the first through hole 225 is in communication with the accommodating cavity 211 and the first groove 222, respectively; the protection plate 21 has a second through hole 212, the second through hole 212 penetrates the protection plate 21 along the second direction Z, and the second through hole 212 is in communication with the accommodating cavity 211 and the first groove 222, respectively.

[0065] In the embodiment of the present application, by providing the first through hole 225 on the reinforcing member 22 and the second through hole 212 on the protection plate 21, effective moisture removal can be achieved. That is, when there is accumulated water or water vapor in the protection assembly 2, the accumulated water or water vapor can be discharged in time, keeping the protection assembly 2 dry, thereby reducing the probability of corrosion of the structures of the protection assembly 2.

[0066] Please refer to Figure 2 , Figure 3 and Figure 5 , in some embodiments, the protection assembly 2 further comprises a protection layer 23, the protection layer 23 is arranged on the side of the protection plate 21 away from the bottom plate 12, and the protection layer 23 is attached to the side of the protection plate 21 away from the bottom plate 12; the protection layer 23 has a third through hole 231, the third through hole 231 penetrates the protection layer 23 along the second direction Z, and the third through hole 231 is in communication with the second through hole 212.

[0067] In this embodiment, the protective layer 23 can effectively protect the base material of the protective plate 21 from corrosion when it is subjected to external impact or scratches. The third through hole 231 is connected to the second through hole 212 to facilitate the discharge of moisture from the accommodating cavity 211 of the protective plate 21.

[0068] In some embodiments, the protective plate 21 includes a second body 213 and a connecting plate 214, the second body 213 accommodating cavity 211 is arranged in the second body 213, and the accommodating cavity 211 passes through the side of the second body 213 facing the bottom plate 12 along the second direction Z; the connecting plate 214 is arranged around the second body 213 and is connected to the second body 213; the connecting plate 214 is connected to the bottom plate 12; a plurality of third grooves 2141 are provided on the side of the connecting plate 214 facing the bottom plate 12, and the plurality of third grooves 2141 are all connected to the accommodating cavity 211; the reinforcement 22 includes a plurality of fixing portions 226, each fixing portion 226 is connected to the protrusion 221 adjacent to the connecting plate 214, and at least a portion of each fixing portion 226 is arranged in a third groove 2141 and connected to the connecting plate 214.

[0069] In the embodiment of the present application, the protective plate 21 is provided with a second body 213 to form a receiving cavity 211, and is connected to the bottom plate 12 by providing a connecting plate 214. A third groove 2141 is provided on the bottom plate 12 to accommodate the fixing portion 226 of the reinforcement member 22. This prevents the fixing portion 226 from interfering with the connection between the connecting plate 214 and the bottom plate 12 in the second direction Z, thereby improving the stability of the connection between the bottom plate 12 and the protective plate 21.

[0070] It should be noted that the embodiment of the present application achieves stability in the connection between the reinforcement 22 and the protective plate 21 by setting a plurality of third grooves 2141 and a plurality of fixing portions 226, and at the same time can buffer and absorb the remaining impact force of the reinforcement 22 and transfer it to the connecting plate 214, further improving the buffering and energy absorption effect.

[0071] It should also be noted that the connection between the fixing portion 226 and the connecting plate 214 can be a welding connection, which can minimize the space occupied by the fixing portion 226 in the second direction Z, thereby further reducing the possibility of the fixing portion 226 interfering with the connection between the protection group component and the base plate 12.

[0072] It should also be noted that the depth of the third groove 2141 is preferably equal to the thickness of the fixing portion 226. At this time, the fixing portion 226 can be completely accommodated in the third groove 2141 along the second direction Z, and may not even contact the bottom plate 12, thereby achieving sufficient fixed contact between the connecting plate 214 and the bottom plate 12. When the impact force is large, the bottom plate 12 will inevitably be locally subjected to force.

[0073] Please refer to Figures 1-3 In some embodiments, the battery pack includes multiple protection components 2, and the multiple protection components 2 are all connected to the bottom plate 12; at least one protection component 2 is arranged on a side of the bottom plate 12 away from the accommodating space 11 along the second direction Z and is connected to the bottom plate 12.

[0074] In the embodiment of the present application, since the battery pack only has some weak locations and locations that are susceptible to impact, the present application can provide point-to-point targeted protection of local locations as needed by setting up multiple protection components 2, which can not only achieve better protection effects but also reduce the overall weight of the battery pack; at the same time, multiple protection components 2 can also be flexibly fixed in position as needed, thereby realizing flexible application of the protection components 2 and improving the applicability of the protection components 2.

[0075] Accordingly, an embodiment of the present application further provides an electric device, comprising a battery pack as described in any one of the aforementioned embodiments. The battery pack is used to supply power to the electric device.

[0076] It is understandable that the electrical device includes all the technical features and technical effects of the aforementioned battery pack, which will not be repeated here.

[0077] Of course, the electrical devices referred to in this application can be application devices such as vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools. Vehicles can be new energy vehicles, which can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of this application do not impose any special restrictions on the above-mentioned electrical devices.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] The above is a detailed introduction to a battery pack and an electrical device provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: Having an intersecting first direction and a second direction, comprising: a box body having an accommodating space, the box body including a bottom plate, the bottom plate being arranged on one side of the accommodating space along the second direction, the bottom plate being used to enclose the accommodating space; Protection components, including: a protective plate, arranged along the second direction on a side of the bottom plate away from the accommodating space and connected to the bottom plate; the protective plate has an accommodating cavity, and the accommodating cavity passes through a side of the protective plate facing the bottom plate; A reinforcement member is at least partially arranged in the accommodating cavity and connected to the protective plate; the reinforcement member includes a plurality of protrusions, the plurality of protrusions are arranged at intervals along the first direction, and a first groove is formed between two adjacent protrusions, and the first groove is arranged on the side of the reinforcement member facing the protective plate along the second direction.

2. The battery pack according to claim 1, wherein: The reinforcement includes a first body extending along the first direction. The protrusion is provided on a side of the first body away from the bottom plate and connected to the first body. Two adjacent protrusions and the first body enclose the first groove.

3. The battery pack according to claim 2, wherein: The reinforcement has a second groove, the second groove is arranged on a side of the first body facing the bottom plate, and the second groove is recessed toward the protrusion along the second direction.

4. The battery pack according to claim 1, wherein: The reinforcement includes a plurality of first bodies arranged at intervals along the first direction, two adjacent first bodies are arranged on both sides of a protrusion along the first direction and connected to the protrusion, the first body is arranged on the side of the protrusion close to the base plate, and the two adjacent protrusions and one first body enclose the first groove.

5. The battery pack according to claim 4, characterized in that: The reinforcement member has a second groove, and the second groove is arranged on a side of the protrusion facing the bottom plate.

6. The battery pack according to claim 1, wherein: The protrusion is connected to the protection plate along the second direction toward one side of the protection plate.

7. The battery pack according to claim 6, characterized in that: Along the second direction, a portion of the reinforcement member located in the accommodating cavity is spaced apart from the bottom plate.

8. The battery pack according to claim 7, characterized in that: The reinforcement member has a first through hole, the first through hole passes through the reinforcement member along the second direction, and the first through hole is communicated with the accommodating cavity and the first groove respectively; The protection plate has a second through hole, which passes through the protection plate along the second direction. The second through hole is communicated with the accommodating cavity and the first groove respectively.

9. The battery pack according to claim 8, characterized in that: The protective component also includes a protective layer, which is arranged on the side of the protective plate away from the bottom plate, and the protective layer is in contact with the side of the protective plate away from the bottom plate; the protective layer has a third through hole, and the third through hole passes through the protective layer along the second direction, and the third through hole is connected to the second through hole.

10. The battery pack according to claim 1, wherein: The protection plate includes: a second body, wherein the accommodating cavity is provided in the second body, and the accommodating cavity penetrates the second body along the second direction toward a side of the bottom plate; a connecting plate, arranged around the second body and connected to the second body; the connecting plate is connected to the bottom plate; a plurality of third grooves are provided on a side of the connecting plate facing the bottom plate, and the plurality of third grooves are all connected to the accommodating cavity; The reinforcement member includes a plurality of fixing portions, each of the fixing portions is connected to the protrusion adjacent to the connecting plate, and at least a portion of each of the fixing portions is disposed in one of the third grooves and connected to the connecting plate.

11. The battery pack according to claim 1, wherein: The battery pack includes a plurality of the protection components, and the plurality of the protection components are all connected to the base plate; at least one of the protection components is arranged along the second direction on a side of the base plate away from the accommodating space and is connected to the base plate.

12. An electrical device, characterized in that: Comprising a battery pack as described in any one of claims 1-11.

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