Box body of battery pack, battery pack and electric equipment

Abstract

The utility model discloses a box body of a battery pack, the battery pack and electric equipment, the box body of the battery pack comprises a shell, the shell comprises a main body part defining a containing cavity and a fixing part connected with the edge of an opening of the containing cavity; the first reinforcing piece is located on the side, opposite to the opening, of the shell, the first reinforcing piece comprises a first part, a second part and a connecting part, the first part is fixedly connected with the main body part, the second part is fixedly connected with the fixing part, and the connecting part is fixedly connected with the main body part. The connecting part is respectively connected with the first part and the second part, and the connecting part is provided with a first through hole. According to the box body of the battery pack disclosed by the embodiment of the utility model, the first through hole is formed in the connecting part, so that the light-weight design of the first reinforcing piece is conveniently realized, the light-weight design of the box body of the battery pack is further conveniently realized, and the cost is conveniently reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field, specifically, relate to a battery pack's box and battery pack, electric equipment. BACKGROUND

[0002] In the related art, a support edge beam is fixedly arranged on the battery pack, and the battery pack is fixed by fixing the support edge beam, but the arrangement of the support edge beam increases the weight of the battery pack as a whole and increases the cost. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, and for this purpose, the utility model provides a battery pack's box, the first through -hole is arranged on the connecting portion of the battery pack's box, the lightweight design of the first reinforcing piece is facilitated, and then the lightweight design of the battery pack's box is facilitated, and the cost is reduced.

[0004] The utility model further provides a battery pack with the battery pack's box.

[0005] The utility model further provides an electric equipment with the battery pack.

[0006] According to the battery pack's box of the utility model first aspect embodiment, including: shell, the shell includes the main part of the accommodating cavity and the fixed part that the rim of the opening of the accommodating cavity is connected with, first reinforcing piece, the first reinforcing piece is located the side of the shell away from the opening, the first reinforcing piece includes first part, second part and connecting portion, the first part is fixedly connected with the main part, the second part is fixedly connected with the fixed part, the connecting portion is connected with the first part and the second part respectively, and the connecting portion is equipped with the first through -hole.

[0007] The battery pack's box according to the utility model embodiment sets the first through -hole on the connecting portion, facilitates the lightweight design of the first reinforcing piece, and then facilitates the lightweight design of the battery pack's box, and the cost is reduced.

[0008] In addition, the battery pack's box according to the above embodiment of the utility model can also have the following additional technical features:

[0009] According to some embodiments of the utility model, the first through -hole extends to at least one of the first part and the second part.

[0010] According to some embodiments of the utility model, the connecting portion is spaced apart from the side wall of the accommodating cavity and defines a buffer cavity.

[0011] According to some embodiments of the present application, the fixed part comprises a fixed body and a fixed flange forming an included angle, the fixed body is connected with the main body part, the fixed flange is bent towards the direction away from the opening, wherein the second part is spaced from the fixed body, and the second part is fixed with the fixed flange.

[0012] According to some optional embodiments of the present application, the second part has a first connecting hole, the fixed body is provided with a second connecting hole, and the first fastener is adapted to be arranged in the first connecting hole and the second connecting hole.

[0013] According to some specific embodiments of the present application, the box body of the battery pack further comprises a cover plate, the cover plate is arranged on the opening, the cover plate is provided with a third connecting hole, and the first fastener is arranged in the first connecting hole, the second connecting hole and the third connecting hole.

[0014] According to some embodiments of the present application, the shell is an integral stamping forming part.

[0015] According to some optional embodiments of the present application, at least one side wall of the accommodating cavity has an inward reinforcing protrusion.

[0016] According to some embodiments of the present application, the box body of the battery pack further comprises a plurality of second reinforcing members, and the plurality of second reinforcing members are fixedly arranged on the side wall of the shell away from the first reinforcing member.

[0017] According to some optional embodiments of the present application, the second reinforcing member is fixed to the first part and is arranged in space with the second part.

[0018] According to some specific embodiments of the present application, the welding fixed part of the second reinforcing member and the first part is a first fixed point, the welding fixed part of the first part and the main body part is a second fixed point, and the first fixed point and the second fixed point are arranged in space.

[0019] According to some specific embodiments of the present application, the second reinforcing member comprises a first extension, a second extension and a bending part, the bending part connects the first extension and the second extension, wherein the first extension is fixed with the first part, and the second extension is opposite to and arranged in space with the second part.

[0020] In some embodiments, the box body of the battery pack further comprises a bottom guard plate, and the bottom guard plate is fixedly connected with the plurality of second reinforcing members.

[0021] In some examples, the bottom guard plate is fixedly connected with the second extension.

[0022] Furthermore, the first extension is welded or bonded to the first reinforcement; and / or, the second extension is fixedly connected to the bottom guard plate by a second fastener.

[0023] Furthermore, the second extension is provided with a first fixing hole, the bottom guard plate is provided with a second fixing hole, and the second fastener passes through the first fixing hole and the second fixing hole.

[0024] Furthermore, the bottom guard plate includes a plurality of connecting lugs, on which the second fixing hole is defined.

[0025] According to a second aspect of the present invention, a battery pack is provided, the battery pack comprising a housing and individual battery cells as described in the first aspect of the present invention, the individual battery cells being disposed within the receiving cavity.

[0026] According to the embodiments of the present invention, the battery pack utilizes the housing of the battery pack described in the first aspect of the present invention, and provides a first through hole on the connecting portion, which facilitates the lightweight design of the first reinforcing member, thereby facilitating the lightweight design of the battery pack housing and reducing costs.

[0027] According to a third aspect of the present invention, an electrical device is provided, the electrical device including the housing of a battery pack as described in a second aspect of the present invention.

[0028] According to the embodiments of the present invention, the electrical equipment utilizes the battery pack described in the second aspect of the present invention, and provides a first through hole in the connecting portion to facilitate the lightweight design of the first reinforcing member, thereby facilitating the lightweight design of the battery pack housing and reducing costs.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of the battery pack housing according to an embodiment of the present utility model;

[0032] Figure 2 This is a partial structural diagram of the battery pack housing according to some embodiments of the present utility model;

[0033] Figure 3is a partial structure schematic view of a battery pack box according to some embodiments of the present application;

[0034] Figure 4 is a structure schematic view of a housing in one direction according to some embodiments of the present application;

[0035] Figure 5 is a structure schematic view of a housing in another direction according to some embodiments of the present application;

[0036] Figure 6 is a structure schematic view of a first reinforcing member and a second reinforcing member in one direction according to some embodiments of the present application;

[0037] Figure 7 is a structure schematic view of a first reinforcing member and a second reinforcing member in another direction according to some embodiments of the present application;

[0038] Figure 8 is a top view of a first reinforcing member and a second reinforcing member according to some embodiments of the present application;

[0039] Figure 9 is a side view of a first reinforcing member and a second reinforcing member according to some embodiments of the present application;

[0040] Figure 10 is a structure schematic view of a bottom housing according to some embodiments of the present application.

[0041] Reference signs: 1, box;

[0042] 10, housing; 11, main body part; 111, accommodating cavity; 112, opening; 113, reinforcing protruding part; 12, fixing part; 121, fixing body; 1211, second connecting hole; 122, fixing flange; 13, protruding part; 14, limiting protrusion; 141, second cavity;

[0043] 20, first reinforcing member; 21, first part; 22, second part; 221, first connecting hole; 23, connecting part; 231, first through hole;

[0044] 30, second reinforcing member; 31, first extension part; 32, second extension part; 321, first fixing hole; 33, bending part;

[0045] 41, buffer cavity; 51, first fastener; 52, second fastener;

[0046] 60, bottom guard plate; 61, connecting lug; 611, second fixing hole; 62, recessed part;

[0047] 70, limiting plate; 71, first cavity. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0049] The box body 1 of the battery pack according to the embodiments of the present application is described below with reference to the drawings.

[0050] As shown in Figures 1-3 The box body 1 of the battery pack according to the embodiments of the present application includes a shell 10 and a first reinforcing member 20.

[0051] The shell 10 includes a main body part 11 and a fixed part 12, the main body part 11 defines a receiving cavity 111, the fixed part 12 is connected to the edge of the opening 112 of the receiving cavity 111, the first reinforcing member 20 is located on the side of the shell 10 away from the opening 112, and includes a first part 21, a second part 22 and a connecting part 23, the first part 21 is fixedly connected to the main body part 11, the second part 22 is fixedly connected to the fixed part 12, so as to fixedly connect the first reinforcing member 20 and the shell together from different positions of the first reinforcing member 20, and then fixedly connect the first reinforcing member 20 to the side of the shell 10 away from the opening 112, so as to strengthen the structural strength of the box body 1 as a whole,

[0052] The connecting part 23 is connected to the first part 21 and the second part 22 respectively, and the connecting part 23 is provided with a first through hole 231, which facilitates the lightweight design of the first reinforcing member 20, and then facilitates the lightweight design of the box body 1 of the battery pack, and facilitates cost reduction.

[0053] Therefore, the box body 1 of the battery pack according to the embodiments of the present application is provided with the first through hole 231 on the connecting part 23, which facilitates the lightweight design of the first reinforcing member 20, and then facilitates the lightweight design of the box body 1 of the battery pack, and facilitates cost reduction.

[0054] The box body 1 of the battery pack according to the embodiments of the present application is described below with reference to the drawings.

[0055] In some specific embodiments of the present application, as shown in Figures 1-3 The box body 1 of the battery pack includes a shell 10 and a first reinforcing member 20.

[0056] In some embodiments of this utility model, the included angle between the first part 21 and the connecting part 23 is greater than or equal to 90°, and the included angle between the second part 22 and the connecting part 23 is greater than or equal to 90° to avoid affecting the fatigue strength of the first reinforcing member 20 when the roller pressing part is bent to form the first reinforcing member 20.

[0057] In some embodiments of this utility model, the first through hole 231 extends to at least one of the first portion 21 and the second portion 22, so as to increase the size of the first through hole 231 without affecting the strength of the first reinforcing member 20 or with a small impact on the strength of the first reinforcing member 20, thereby reducing the weight of the first reinforcing member 20 and reducing production costs.

[0058] like Figure 6 , Figure 8 As shown, in this embodiment, the first through hole 231 extends to the first part 21 and the second part 22 to increase the size of the first through hole 231 within a limited space, thereby making the size of the first through hole 231 larger and thus reducing the weight of the first reinforcing member 20 and reducing production costs.

[0059] In some embodiments, such as Figure 8 , Figure 9 As shown, the first part 21, the connecting part 23 and the second part 22 are arranged along the first direction. The length direction of the first part 21, the connecting part 23 and the second part 22 are both extended along the second direction. The connecting part 23 is provided with a plurality of spaced first through holes 231, which are arranged at intervals along the second direction.

[0060] The first through hole 231 extends to the first part 21 and the second part 22 in the first direction to increase the size of the first through hole 231 in a limited space, thereby making the size of the first through hole 231 larger and thus reducing the weight of the first reinforcing member 20 and reducing production costs.

[0061] In some embodiments of this utility model, such as Figure 2 , Figure 3 As shown, the connecting part 23 is spaced from the side wall of the receiving cavity 111 and defines a buffer cavity 41. In this way, when the housing 1 is impacted, space can be reserved for the deformation of the first reinforcing member 20. On the one hand, the impact force on the first reinforcing member 20 can be buffered to reduce the impact force transmitted to the housing 10. On the other hand, when the connecting part 23 deforms, the possibility of the housing 10 and the connecting part 23 colliding with each other can be reduced, thereby reducing the force on the housing 10 and protecting the battery cells inside the housing 10.

[0062] In some embodiments, the extending direction of the connecting portion 23 is parallel to the extending direction of the side wall of the accommodating cavity 111, so that the connecting portion 23 and the side wall of the accommodating cavity 111 jointly define a buffer cavity 41 with a relatively uniform size, and space is reserved for deformation of the connecting portion 23.

[0063] In some embodiments, the battery pack includes a plurality of battery monomers arranged in the accommodating cavity 111. During the charging and discharging process of the battery pack, gas is generated in the battery monomers, which exerts a force on the side wall of the accommodating cavity 111, so that the connecting portion 23 is spaced apart from the side wall of the accommodating cavity 111, thereby reserving space for deformation of the battery monomers and the side wall of the shell 10, and enhancing the overall structural strength of the box body 1.

[0064] In some embodiments of the utility model, as shown in Figure 3 The fixed portion 12 includes a fixed body 121 and a fixed flange 122 forming an included angle. The fixed body 121 is connected to the main body portion 11, and the fixed flange 122 is bent towards the direction away from the opening 112, that is, the fixed flange 122 is bent towards the second portion 22.

[0065] The second portion 22 is spaced apart from the fixed body 121. This arrangement facilitates surface treatment on the side of the second portion 22 facing the fixed body 121, increases the area of the second portion 22 that can be surface treated, and facilitates surface treatment on the side of the fixed body 121 facing the second portion 22, thereby increasing the strength of the surfaces of the second portion 22 and the fixed body 121 and reducing the likelihood of corrosion of the second portion 22 and the fixed body 121.

[0066] Specifically, spacing the second portion 22 from the fixed body 121 rather than closely attaching the large surface of the second portion 22 to the fixed body 121 facilitates electrophoresis treatment of the entire box body 1, ensures that the electrophoresis liquid fully covers the side of the second portion 22 facing the fixed body 121 and other sides, and ensures that the electrophoresis liquid fully covers the side of the fixed body 121 facing the second portion 22 and other sides, thereby facilitating surface treatment of most of the surfaces of the first reinforcing member 20 and the shell 10 and reducing the likelihood of corrosion of the first reinforcing member 20 and the shell 10.

[0067] In addition, spacing the second portion 22 from the fixed body 121 also forms a vertical impact-resistant structure between the second portion 22 and the fixed body 121, thereby improving the overall structural strength of the box body 1.

[0068] The second portion 22 is fixed to the fixed flange 122 to ensure the stability of the fixed connection between the second portion 22 and the shell 10.

[0069] In some embodiments, as shown inFigure 3 As shown, the first part 21 is fixedly connected with the part of the shell 10 located at the bottom of the accommodating cavity 111, and the second part 22 is fixedly connected with the fixed flange 122, so that the two ends of the first reinforcing member 20 are fixedly connected with the shell 10 in the first direction, thereby increasing the stability of the fixed connection between the first reinforcing member 20 and the shell 10.

[0070] Specifically, after the first reinforcing member 20 and the shell 10 are fixedly connected together, that is, the first part 21 is fixedly connected with the bottom of the accommodating cavity 111, and the second part 22 is fixedly connected with the fixed flange 122, the shell 10 and the first reinforcing member 20 are then subjected to surface treatment together, at which time the side of the first reinforcing member 20 towards the fixed body 121 can be subjected to surface treatment through the first through hole 231, and the side of the fixed body 121 towards the second part 22 can be subjected to surface treatment through the first through hole 231.

[0071] Specifically, when the shell 10 and the first reinforcing member 20 are subjected to surface treatment by using the electrophoretic liquid, the electrophoretic liquid can enter between the shell 10 and the first reinforcing member 20, specifically, between the second part 22 and the fixed body 121, and between the connecting part 23 and the sidewall of the accommodating cavity 111, so as to increase the area of the shell 10 that can be subjected to surface treatment, increase the area of the first reinforcing member 20 that can be subjected to surface treatment, and then perform surface treatment on the shell 10 and the first reinforcing member 20, thereby reducing the possibility of corrosion of the shell 10 and the first reinforcing member 20.

[0072] In some examples, the connecting part 23 is spaced apart from the sidewall of the accommodating cavity 111, so as to facilitate surface treatment on the side of the connecting part 23 towards the sidewall of the accommodating cavity 111, and surface treatment on the side of the sidewall of the accommodating cavity 111 towards the connecting part 23, thereby facilitating improvement of the structural strength of the shell 10 and the second reinforcing member 20, and reduction of the possibility of corrosion of the shell 10 and the second reinforcing member 20.

[0073] Specifically, the electrophoretic liquid can enter between the connecting part 23 and the sidewall of the accommodating cavity 111 through the first through hole 231, so as to perform surface treatment on the side of the connecting part 23 towards the shell 10, and perform surface treatment on the side of the sidewall of the accommodating cavity 111 towards the connecting part 23, thereby reducing the possibility of corrosion of the shell 10 and the first reinforcing member 20.

[0074] In some optional embodiments of the present application, Figure 4 , Figure 6 and Figure 9As shown, the second part 22 has a first connecting hole 221, the fixing body 121 is provided with a second connecting hole 1211, and the first fastener 51 is adapted to be arranged in the first connecting hole 221 and the second connecting hole 1211, so as to fixedly connect the second part 22 and the fixing body 121 together, thereby increasing the stability of the connection between the first reinforcing part 20 and the shell 10, and preventing the shell 10 and the first reinforcing part 20 from being separated.

[0075] In some embodiments of the utility model, the box body 1 further comprises a cover plate (not shown in the figure), the cover plate is arranged on the opening 112, the cover plate is provided with a third connecting hole, and the first fastener 51 is arranged in the first connecting hole 221, the second connecting hole 1211 and the third connecting hole, so as to fixedly connect the cover plate, the fixing body 121 and the second part 22 together, and the cover plate can be stably arranged on the opening 112, so as to protect the battery monomer in the containing cavity 111.

[0076] Specifically, the first fastener 51 is used to connect the cover plate, the shell 10 and the first reinforcing part 20 together, and the cover plate and the shell 10 do not need to be fixedly connected separately, so that the number of parts of the box body 1 is reduced, the processing steps are reduced, and the cost is reduced.

[0077] In some embodiments of the utility model, as shown in Figure 4 As shown, the shell 10 is an integrally stamped and formed part, so that the processing difficulty is low, and the overall structural strength of the shell 10 is large, so as to improve the load capacity of the shell 10, and the shell 10 can bear a large load.

[0078] Specifically, the fixing part 12 is a flanging structure of the shell 10, and a sheet material is integrally stamped to form a ship-shaped structure, so as to form the main body part 11 and the fixing part 12.

[0079] In some embodiments, the shell 10 is formed by stamping DP780.

[0080] In some optional embodiments of the utility model, as shown in Figure 4 As shown, at least one side wall of the containing cavity 111 has an inward reinforcing protrusion 113, so as to enhance the overall structural strength of the shell 10, and the shell 10 can better protect the battery monomer in the containing cavity 111.

[0081] In some embodiments, the reinforcing protrusion 113 comprises two side walls and a bottom wall, the bottom wall connects the two side walls, and in the direction towards the bottom wall, the two side walls extend towards each other, so as to facilitate stamping and forming the reinforcing protrusion 113.

[0082] In some embodiments, the length direction of the shell 10 extends along a first direction, and a plurality of reinforcing protrusions 113 are arranged on the side walls of the accommodating cavities 111 at both ends of the shell 10 in the first direction and are arranged at intervals along a second direction.

[0083] In some embodiments, the plurality of reinforcing protrusions 113 are arranged on the four side walls of the accommodating cavities 111 to sufficiently increase the structural strength of the reinforcing protrusions 113.

[0084] In some embodiments, the side walls of the accommodating cavities 111 are stamped from the outside of the accommodating cavities 111 to form the reinforcing protrusions 113 on the side walls of the accommodating cavities 111, and the structural strength of the shell 10 is increased by the reinforcing protrusions 113.

[0085] In some embodiments of the utility model, the shell 10 is a steel shell, so that the overall structural strength of the shell 10 is large, and the shell 10 can bear a large load.

[0086] In some embodiments of the utility model, as shown in Figure 2 The box body 1 of the battery pack further includes a plurality of second reinforcing members 30, the plurality of second reinforcing members 30 are fixed at intervals on the side walls of the first reinforcing member 20 away from the shell 10, so as to increase the overall structural strength of the box body 1 and enable the box body 1 to bear a large load.

[0087] In some optional embodiments of the utility model, the second reinforcing member 30 is fixed to the first part 21, and the second reinforcing member 30 is arranged at intervals with the second part 22, so as to reserve space for deformation of the first reinforcing member 20 and the second reinforcing member 30 and facilitate surface treatment of the surface of the second reinforcing member 30 on the side facing the first reinforcing member 20 and surface treatment of the surface of the second part 22 on the side facing the second reinforcing member 30.

[0088] In some specific embodiments of the utility model, the part where the second reinforcing member 30 is welded to the first part 21 is a first fixed point, the part where the first part 21 is welded to the main body part 11 is a second fixed point, and the first fixed point and the second fixed point are arranged at intervals, so as to ensure the firmness of the welding connection between the second reinforcing member 30 and the first part 21 and the firmness of the welding connection between the first part 21 and the main body part 11 and avoid virtual welding.

[0089] In some optional embodiments of the utility model, as shown in Figure 9 The second reinforcing member 30 includes a first extending part 31, a second extending part 32, and a bent part 33, and the bent part 33 connects the first extending part 31 and the second extending part 32, that is, the second reinforcing member 30 is of a bent structure, which can increase the structural strength of the second reinforcing member 30 and further increase the structural strength of the box body 1.

[0090] The first extension 31 is fixed to the first part 21 to fix the second reinforcing member 30 to the first reinforcing member 20. The second extension 32 is opposite to the second part 22 and spaced apart to reserve enough space for the second extension 32, so as to facilitate the second extension 32 to cooperate with other components.

[0091] In some embodiments, the included angle between the bent portion 33 and the first extension portion 31 is greater than or equal to 90°, and the included angle between the bent portion 33 and the second extension portion 32 is greater than or equal to 90°, so as to avoid affecting the fatigue strength of the second reinforcing member 30 when the roller press is bent to form the second reinforcing member 30.

[0092] In some specific embodiments of this utility model, such as Figure 2 As shown, the battery pack housing 1 also includes a bottom protective plate 60, which is fixedly connected to a plurality of second reinforcing members 30 to fix the bottom protective plate 60 to the second reinforcing members 30, thereby enhancing the stability of the connection between the bottom protective plate 60 and the housing 10 and other structures, and reducing the possibility that the bottom protective plate 60 may fall off.

[0093] In some embodiments, the bottom guard plate 60 is fixedly connected to the second extension 32 to separate the area where the bottom guard plate 60 and the second reinforcement 30 are fixedly connected from the area where the second reinforcement 30 and the first reinforcement 20 are fixedly connected, thereby stably fixing the bottom guard plate 60 to the bottom of the housing 10.

[0094] In some embodiments, the length direction of the housing 10 extends along a first direction, the width direction of the housing 10 extends along a second direction, and a first reinforcing member 20 and a second reinforcing member 30 are fixed at both ends of the housing 10 in the first direction, with the length direction of the first reinforcing member 20 extending along the second direction. Reinforcing plates are provided at both ends of the housing 10 in the second direction, with the length direction of the reinforcing plates extending along the first direction, and the reinforcing plates are fixed to the side of the housing 10 facing away from the opening 112.

[0095] The bottom guard plate 60 extends along the first direction in the length direction and along the second direction in the width direction. The bottom guard plate 60 is fixedly connected to the second extension 32 of the second reinforcing member 30 at its end in the first direction and to the reinforcing plate at its end in the second direction, so as to stably fix the bottom guard plate 60 and the housing 10 together, making it difficult for the bottom guard plate 60 to detach from the housing 10.

[0096] Specifically, both the first reinforcing member 20 and the second reinforcing member 30 are elongated strip structures extending along the second direction, so as to maximize the overall structural strength of the box 1 in the second direction and improve the stability of the box 1 structure.

[0097] In some examples, the shell 10 is fixedly connected with the reinforcing plate by welding; and / or, the shell 10 is fixedly connected with the reinforcing plate by screws or bolts.

[0098] In some embodiments, the first extension 31 is fixedly connected with the first reinforcing piece 20 by welding or bonding.

[0099] In some examples, the first extension 31 is connected with the first reinforcing piece 20 by full-automatic resistance welding, so as to improve the welding efficiency.

[0100] In some embodiments, the second extension 32 is fixedly connected with the bottom guard plate 60 by the second fastener 52.

[0101] In some embodiments, as shown in Figure 7 , Figure 9 and Figure 10 , the second extension 32 is provided with a first fixing hole 321, the bottom guard plate 60 is provided with a second fixing hole 611, and the second fastener 52 is arranged in the first fixing hole 321 and the second fixing hole 611, so as to fixedly connect the second extension 32 and the bottom guard plate 60 together.

[0102] In some examples, the bottom guard plate 60 comprises a plurality of connecting lugs 61, and the second fixing hole 611 is defined on the connecting lug 61, so that the weight of the bottom guard plate 60 can be reduced when the bottom guard plate 60 is fixedly connected with the second extension 32, thereby facilitating the lightweight design of the box body 1 and saving cost.

[0103] In some embodiments, the material of the bottom guard plate 60 is DP780.

[0104] In some specific embodiments of the utility model, the first reinforcing piece 20 is formed by rolling and bending a steel plate of DP780.

[0105] In some optional embodiments of the utility model, as shown in Figure 5 , the bottom of the accommodating cavity 111 is provided with a plurality of protruding portions 13, and the protruding portion 13 protrudes towards the direction away from the opening 112, so that the protruding portion 13 occupies the space in the accommodating cavity 111, and the structural strength of the shell 10 can be further improved.

[0106] In some embodiments, the plurality of protruding portions 13 are arranged close to the middle region of the accommodating cavity 111.

[0107] In some embodiments, the side of the bottom guard plate 60 corresponding to the shell 10 is provided with a recessed portion 62, and the protruding portion 13 is adapted to extend into the recessed portion 62, so that the bottom guard plate 60 is in contact with most of the bottom of the accommodating cavity 111, and the compactness of the structure of the box body 1 is improved.

[0108] In some examples, the side surface of the bottom guard plate 60 away from the shell 10 is a plane.

[0109] In some embodiments of the present application, as shown in Figure 2 The battery pack further comprises a limiting plate 70, the plurality of battery cells are arranged at intervals along the first direction, and the limiting plate 70 is located at both ends of the plurality of battery cells in the first direction to limit the positions of the plurality of battery cells.

[0110] In some examples, the limiting plate 70 defines a first cavity 141 to reserve space for deformation of the battery cells when the battery cells generate gas, and meanwhile, the first cavity 141 can enhance the structural strength of the limiting plate 70 as a whole.

[0111] In some embodiments of the present application, as shown in Figure 4 , Figure 5 The bottom of the accommodating cavity 111 is provided with two limiting protrusions 14, the limiting protrusions 14 protrude towards the direction close to the opening 112, the two limiting protrusions 14 are arranged at intervals along the second direction, the two limiting protrusions 14 are respectively arranged close to both ends of the second direction of the accommodating cavity 111, the limiting protrusions 14 extend along the first direction and define a second cavity 141, and the plurality of battery cells are located between the two limiting protrusions 14.

[0112] The limiting protrusions 14 can enhance the structural strength of the shell 10 and limit the positions of the plurality of battery cells, and the second cavity 141 defined by the limiting protrusions 14 can reserve space for deformation of the battery cells.

[0113] A battery pack according to an embodiment of the present application is described below. The battery pack according to the embodiment of the present application comprises the shell 1 and the battery cells according to the above-mentioned embodiments of the present application.

[0114] The battery cells are arranged in the accommodating cavity 111 to protect the battery cells by the battery pack.

[0115] The battery pack according to the embodiment of the present application, by arranging the first through hole 231 on the connecting portion 23 by using the shell 1 according to the above-mentioned embodiments of the present application, facilitates lightweight design of the first reinforcing member 20, and further facilitates lightweight design of the shell 1 of the battery pack, and facilitates cost reduction.

[0116] Other configurations and operations of the battery pack according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail here.

[0117] A power-consuming device according to an embodiment of the present application is described below. The power-consuming device according to the embodiment of the present application comprises the battery pack according to the above-mentioned embodiments of the present application.

[0118] According to the power equipment of the embodiment of the utility model, through utilizing the battery pack according to the above embodiment of the utility model, first through hole 231 is arranged on connecting part 23, it is convenient to realize the lightweight design of first reinforcing part 20, and then it is convenient to realize the lightweight design of the box body 1 of battery pack, and it is convenient to reduce the cost.

[0119] In some embodiments, the power equipment can be a vehicle, or other power equipment, which is not limited here.

[0120] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more features.In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.In the description of the utility model, the "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.

[0121] In the description of the utility model, the "above", "upper" and "upper surface" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0122] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements.In the specific meaning of the above terms in the utility model, it can be understood by the person skilled in the art according to the specific circumstances.

[0123] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0124] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack housing (1), characterized in that, include: The housing (10) includes a main body (11) defining a receiving cavity (111) and a fixing part (12) connected to the edge of the opening (112) of the receiving cavity (111). The first reinforcing member (20) is located on the side of the housing (10) facing away from the opening (112). The first reinforcing member includes a first part (21), a second part (22) and a connecting part (23). The first part (21) is fixedly connected to the main body (11), and the second part (22) is fixedly connected to the fixing part (12). The connecting part (23) is connected to the first part (21) and the second part (22) respectively. The connecting part (23) is provided with a first through hole (231). The first through hole (231) extends to at least one of the first part (21) and the second part (22).

2. The battery pack housing (1) according to claim 1, characterized in that, The connecting portion (23) is spaced from the sidewall of the receiving cavity (111) and defines a buffer cavity (41).

3. The battery pack housing (1) according to claim 1, characterized in that, The fixing part (12) includes a fixing body (121) forming an angle and a fixing flange (122). The fixing body (121) is connected to the main body (11), and the fixing flange (122) is bent in a direction away from the opening (112). The second part (22) is spaced apart from the fixed body (121), and the second part (22) is fixed to the fixed flange (122).

4. The battery pack housing (1) according to claim 3, characterized in that, The second part (22) has a first connecting hole (221), the fixing body (121) has a second connecting hole (1211), and the first fastener (51) is adapted to pass through the first connecting hole (221) and the second connecting hole (1211).

5. The battery pack housing (1) according to claim 4, characterized in that, It also includes a cover plate, which covers the opening (112) and has a third connecting hole. The first fastener (51) passes through the first connecting hole (221), the second connecting hole (1211) and the third connecting hole.

6. The battery pack housing (1) according to claim 1, characterized in that, The housing (10) is an integral stamped part.

7. The battery pack housing (1) according to claim 6, characterized in that, The receiving cavity (111) has an inward reinforcing protrusion (113) on at least one side wall.

8. The housing (1) of the battery pack according to any one of claims 1-7, characterized in that, It also includes a plurality of second reinforcing members (30), which are fixed at intervals to the side wall of the first reinforcing member (20) facing away from the housing (10).

9. The battery pack housing (1) according to claim 8, characterized in that, The second reinforcing member (30) is fixed to the first part (21) and spaced apart from the second part (22).

10. The housing (1) of the battery pack according to claim 9, characterized in that, The part where the second reinforcing member (30) is welded and fixed to the first part (21) is the first fixing point, and the part where the first part (21) is welded and fixed to the main body (11) is the second fixing point. The first fixing point and the second fixing point are spaced apart.

11. The housing (1) of the battery pack according to claim 8, characterized in that, The second reinforcing member (30) includes a first extension (31), a second extension (32), and a bent portion (33), wherein the bent portion (33) connects the first extension (31) and the second extension (32). The first extension (31) is fixed to the first part (21), and the second extension (32) is opposite to and spaced apart from the second part (22).

12. The battery pack housing (1) according to claim 11, characterized in that, It also includes a bottom guard plate (60), which is fixedly connected to the plurality of second reinforcing members (30).

13. The housing (1) of the battery pack according to claim 12, characterized in that, The bottom guard plate (60) is fixedly connected to the second extension (32).

14. The housing (1) of the battery pack according to claim 13, characterized in that, The first extension (31) is welded or bonded to the first reinforcement (20); and / or, the second extension (32) is fixedly connected to the bottom guard plate (60) by a second fastener (52).

15. The housing (1) of the battery pack according to claim 13, characterized in that, The second extension (32) is provided with a first fixing hole (321), the bottom guard plate (60) is provided with a second fixing hole (611), and the second fastener (52) passes through the first fixing hole (321) and the second fixing hole (611).

16. The housing (1) of the battery pack according to claim 15, characterized in that, The bottom guard plate (60) includes a plurality of connecting lugs (61), and the connecting lugs (61) define the second fixing hole (611).

17. A battery pack, characterized in that, include: Box (1) according to any one of claims 1-16; A battery cell, wherein the battery cell is disposed within the receiving cavity (111).

18. An electrical appliance, characterized in that, Includes the battery pack as described in claim 17.

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