Upper cover assembly, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and provides an upper cover assembly, a battery pack and electric equipment. The upper cover assembly comprises an upper cover and a first reinforcing plate. The upper cover comprises an upper cover body and a first reinforcing edge connected to the edge of at least one side of the upper cover body. The first reinforcing plate is connected with the upper cover, and a reinforcing cavity is formed between the first reinforcing plate and the first reinforcing edge. The upper cover assembly provided by the utility model has relatively high strength and relatively low weight.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to an upper cover assembly, a battery pack and an electric device. BACKGROUND

[0002] The battery pack is used to provide electric energy for an electric device such as an electric vehicle.

[0003] The battery pack includes a tray, an upper cover and a battery cell module. The upper cover is arranged on the tray, and a space between the tray and the upper cover forms a containing cavity. The battery cell module is located in the containing cavity formed by the tray and the upper cover. One side of the upper cover is connected with the tray, and the other side of the upper cover is connected with the electric device. Therefore, the strength requirement of the upper cover is relatively high. The thickness of the upper cover can be increased to increase the strength of the upper cover, but increasing the thickness of the upper cover will increase the material cost of the upper cover.

[0004] In the related art, the upper cover of the battery pack is difficult to have both high strength and low cost. UTILITY MODEL CONTENT

[0005] The present application provides an upper cover assembly, a battery pack and an electric device. The upper cover assembly can have both high strength and low weight.

[0006] The present application provides an upper cover assembly, comprising: an upper cover and a first reinforcing plate, the upper cover comprising an upper cover body and a first reinforcing edge connected to at least one side edge of the upper cover body; the first reinforcing plate is connected with the upper cover, and the first reinforcing plate and the first reinforcing edge have a reinforcing cavity therebetween.

[0007] In one possible implementation, the upper cover assembly provided by the present application comprises: a first reinforcing plate comprising a reinforcing plate body and a second reinforcing edge connected to at least one side edge of the reinforcing plate body; the reinforcing plate body is connected with the upper cover body, and the first reinforcing edge and the second reinforcing edge have the reinforcing cavity therebetween.

[0008] In one possible implementation, the upper cover assembly provided by the present application, the first reinforcing edge is bent away from the second reinforcing edge from the upper cover body to form the reinforcing cavity between the first reinforcing edge and the second reinforcing edge.

[0009] In one possible implementation, the upper cover assembly provided by the present application, part of the second reinforcing edge is bent towards the first reinforcing edge and connected with the first reinforcing edge.

[0010] In one possible implementation, the upper cover assembly provided by the present application further comprises a fastener, the second reinforcing edge and the first reinforcing edge are connected through the fastener, and the fastener is used to connect with a lower frame of the battery pack.

[0011] In a possible implementation, the upper cover assembly provided in the present application, the upper cover body is connected with the first reinforcing edge along two side edges in the first direction, and the reinforcing plate body is connected with the second reinforcing edge along two side edges in the first direction.

[0012] In a possible implementation, the upper cover assembly provided in the present application, the reinforcing plate body is provided with at least one stress buffer window.

[0013] In a possible implementation, the upper cover assembly provided in the present application, a sealant is arranged between the reinforcing plate body and the upper cover body, and the sealant is arranged at the edge of the reinforcing plate body and / or the circumferential side of the stress buffer window.

[0014] In a possible implementation, the upper cover assembly provided in the present application, a maintenance window is arranged on one side of the upper cover body in the second direction, the first reinforcing edge is connected to the other side edge of the upper cover body in the second direction, the second reinforcing edge is connected to the side edge of the reinforcing plate body corresponding to the first reinforcing edge in the second direction, the projection of the reinforcing plate body on the upper cover body is arranged apart from the maintenance window, and the second direction intersects the first direction.

[0015] In a possible implementation, the upper cover assembly provided in the present application further comprises at least one cross beam, the cross beam extends along the first direction and is arranged on the side of the reinforcing plate body away from the upper cover body, and the cross beam is connected with the reinforcing plate body.

[0016] In a possible implementation, the upper cover assembly provided in the present application further comprises a plurality of first connecting members corresponding to two ends of the cross beam, the first connecting member is at least partially arranged in the reinforcing cavity, the first connecting member comprises a first connecting portion and a second connecting portion, the first connecting portion is connected with the first reinforcing edge, the second connecting portion is connected with the second reinforcing edge, and the first connecting member is used to be connected with the electrical equipment.

[0017] In a possible implementation, the upper cover assembly provided in the present application further comprises a filler, the filler is connected to at least part of the outer circumferential surface of the first connecting member and connected to the first reinforcing edge and the second reinforcing edge.

[0018] In a possible implementation, the upper cover assembly provided in the present application, the cross beam and the reinforcing plate body have a hollow structure, and a second connecting member is arranged in the hollow structure, and the second connecting member is used to be connected with the electrical equipment.

[0019] In a possible implementation, the upper cover assembly provided in the application further includes a filler, which fills the reinforcing cavity.

[0020] In a possible implementation, the upper cover assembly provided in the application further includes a first connecting piece, which connects the first reinforcing edge and the second reinforcing edge, and is used to be connected with the electrical equipment.

[0021] In a possible implementation, the upper cover assembly provided in the application further includes a second reinforcing plate, a maintenance window is arranged on one side of the upper cover body along a second direction, a projection of the reinforcing plate body on the upper cover body is arranged at intervals with the maintenance window, a side edge of the upper cover body close to the maintenance window is connected with the first reinforcing edge, and the second reinforcing plate is arranged on at least one side of the maintenance window and connected with the first reinforcing edge, the second direction intersects with the first direction.

[0022] In a possible implementation, the upper cover assembly provided in the application, the second reinforcing plate includes a water-stopping edge, which wraps the side of the first reinforcing edge.

[0023] In a possible implementation, the upper cover assembly provided in the application further includes a maintenance window cover plate, which covers the maintenance window and is connected with the upper cover body through a projection welding nut.

[0024] In a possible implementation, the upper cover assembly provided in the application further includes a limiting plate, which is connected to one side of the upper cover body away from the first reinforcing plate, and is used to limit the electric cell module.

[0025] The application further provides a battery pack, which includes an electric cell module, a lower frame body and the above-mentioned upper cover assembly, the upper cover assembly covers the lower frame body, a containing cavity is formed between the upper cover assembly and the lower frame body, and the electric cell module is located in the containing cavity.

[0026] In a possible implementation, the battery pack provided in the application further includes an adhesive piece, which is used to bond the electric cell module and the upper cover.

[0027] The application further provides an electrical equipment, which includes a mounting rack and the above-mentioned battery pack, the battery pack includes a cross beam, and the cross beam is connected with the mounting rack.

[0028] In a possible implementation, the electrical equipment provided in the application further includes a sealing ring, which is arranged between the mounting rack and the upper cover assembly.

[0029] The upper cover assembly provided by the application has the first reinforcing plate and the upper cover, the upper cover comprises an upper cover body and a first reinforcing edge connected to at least one side of the upper cover body, and the first reinforcing edge and the first reinforcing plate have a reinforcing cavity, so that the strength of the upper cover assembly can be increased, the thicknesses of the upper cover and the reinforcing plate are both small, so that the material cost of the upper cover assembly is small, and thus the upper cover assembly can have high strength and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0031] Figure 1 An explosion schematic diagram of the power consumption equipment provided by the embodiments of the present application;

[0032] Figure 2 A structural schematic diagram of the battery pack provided by the embodiments of the present application;

[0033] Figure 3 An explosion schematic diagram of the battery pack provided by the embodiments of the present application;

[0034] Figure 4 A structural schematic diagram of the upper cover assembly provided by the embodiments of the present application;

[0035] Figure 5 An explosion schematic diagram of the upper cover assembly provided by the embodiments of the present application;

[0036] Figure 6 A structural schematic diagram of the upper cover assembly provided by the embodiments of the present application along Figure 4 A sectional view along A-A in FIG. Figure 1 ;

[0037] Figure 7 Another angle of the structural schematic diagram of the upper cover assembly provided by the embodiments of the present application;

[0038] Figure 8 A structural schematic diagram of the upper cover assembly and the battery cell module in the battery pack provided by the embodiments of the present application;

[0039] Figure 9 A sectional view along A-A in FIG. Figure 4 ; Figure 2

[0040] Figure 10 A sectional view along B-B in FIG. Figure 4 ;

[0041] Figure 11 A sectional view along​Figure 4 Cross-sectional view of the middle C-C;

[0042] Figure 12 For Figure 4 Enlarged view at D.

[0043] BRIEF DESCRIPTION OF DRAWINGS

[0044] 10 - battery pack;

[0045] 100 - upper cover assembly;

[0046] 110 - upper cover; 111 - upper cover body; 1111 - maintenance window; 1112 - projection welding nut; 112 - first reinforcing edge; 1121 - first mounting hole; 113 - fastener;

[0047] 120 - first reinforcing plate; 121 - reinforcing plate body; 1211 - stress buffering window; 122 - second reinforcing edge; 1221 - second mounting hole; 124 - second reinforcing plate; 125 - water-blocking edge;

[0048] 130 - reinforcing cavity;

[0049] 140 - filler;

[0050] 150 - sealant;

[0051] 160 - first connecting piece; 161 - first connecting part; 162 - second connecting part; 163 - threaded hole;

[0052] 170 - cross beam; 171 - hollow structure; 172 - second connecting piece; 173 - via hole;

[0053] 180 - limiting plate; 181 - triangular support;

[0054] 190 - maintenance window cover plate;

[0055] 200 - battery cell module; 210 - battery cell;

[0056] 300 - lower frame; 310 - bottom plate; 320 - cold plate;

[0057] 400 - battery manager;

[0058] 20 - mounting bracket; 21 - front seat beam; 22 - vehicle body beam; 23 - rear seat beam;

[0059] 30 - sealing ring;

[0060] 1000 - vehicle;

[0061] X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0062] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0063] In the description of the present application, it should be noted that unless specifically defined and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, it can be fixedly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the description of the present application, it should be understood that the terms “upper”, “lower”, “front”, “rear”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0065] The terms “first”, “second”, “third” (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0066] In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or maintenance tool including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or maintenance tools.

[0067] The battery pack is used to provide electric energy for electric vehicles and other electric equipment.

[0068] The battery pack includes a tray, an upper cover and a battery cell module. The upper cover is arranged on the tray, and a space between the tray and the upper cover forms a containing cavity, and the battery cell module is located in the containing cavity formed by the tray and the upper cover. One side of the upper cover is connected with the tray, and the other side of the upper cover is connected with the electric equipment.

[0069] The weight of the battery pack is transmitted to the used device through the upper cover. When the strength of the upper cover is low, the upper cover is prone to deformation in the process of connecting with the tray or in the process of connecting with the used device. Therefore, the strength requirement of the upper cover is high. The strength of the upper cover can be increased by increasing the thickness of the upper cover, but increasing the thickness of the upper cover will increase the material cost of the upper cover.

[0070] In the related art, the upper cover of the battery pack is difficult to have high strength and low cost.

[0071] Therefore, the embodiments of the present application provide an upper cover assembly, a battery pack and a used device, the upper cover assembly can have high strength and low weight.

[0072] The used device can be a vehicle, an aircraft, a ferry, a computer or an energy storage cabinet and the like powered by a battery pack. The vehicle can be an electric vehicle (EV), a pure electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV) or a new energy vehicle.

[0073] Figure 1 An explosion diagram of the used device provided by the embodiments of the present application is shown.

[0074] Referring to Figure 1 The used device includes a used device body and a battery pack 10. The used device is taken as a vehicle 1000 in the following description. The vehicle 1000 includes a body (not marked in the figure) and a mounting rack 20, the mounting rack 20 is used to carry the body, and the battery pack 10 is connected with the mounting rack 20. The battery pack 10 is used to power the vehicle 1000, and the vehicle 1000 can include one battery pack 10 or multiple battery packs 10.

[0075] Figure 2 A structure diagram of the battery pack provided by the embodiments of the present application is shown. Figure 3 An explosion diagram of the battery pack provided by the embodiments of the present application is shown.

[0076] Referring to Figure 2 and Figure 3As shown, the battery pack 10 comprises an upper cover assembly 100, a battery cell module 200 and a lower frame 300, the upper cover assembly 100 is covered on the lower frame 300, and a containing cavity is formed between the upper cover assembly 100 and the lower frame 300, and the battery cell module 200 is located in the containing cavity.

[0077] The upper cover assembly 100 and the lower frame 300 of the battery pack 10 form a shell of the battery pack 10, and the shell can be a cuboid structure, and the shell has a first direction X, a second direction Y and a third direction Z. The first direction X is one of a length direction and a width direction of the shell, the second direction Y is the other of the length direction and the width direction of the shell, and the third direction Z is a thickness direction of the shell. Figure 2 In the embodiment, the first direction X is the width direction, the second direction Y is the length direction, and the third direction Z is the thickness direction of the shell.

[0078] When the upper cover assembly 100 is covered on the lower frame 300, the upper cover assembly 100 and the lower frame 300 have the containing cavity therebetween, and the battery cell module 200 or other devices can be placed in the containing cavity. The battery cell module 200 comprises a plurality of battery cells 210, and the plurality of battery cells 210 are arranged along the second direction Y.

[0079] The lower frame 300 comprises a bottom plate 310 and a cold plate 320, and the cold plate 320 is installed on the bottom plate 310. When the battery cell module 200 is located in the containing cavity, a side of the battery cell module 200 facing the lower frame 300 can be in contact with the cold plate 320, and the cold plate 320 is used for heat dissipation of the battery cells 210 in the battery cell module 200.

[0080] The battery pack 10 further comprises a battery manager 400, and the battery manager 400 is used for managing and monitoring the running state of the battery cell module 200 in the battery pack 10. Figure 1 In the embodiment, the battery manager 400 is arranged on the cold plate 320.

[0081] Next, the specific structure of the upper cover assembly 100 is described.

[0082] Figure 4 A structure diagram of the upper cover assembly provided by the embodiment of the application is shown in Figure 5 An exploded diagram of the upper cover assembly provided by the embodiment of the application is shown in Figure 6 A sectional view along A-A in Figure 4 . Figure 1 .

[0083] Referring to Figures 4 to 6 As shown, the upper cover assembly 100 comprises an upper cover 110 and a first reinforcing plate 120, the upper cover 110 comprises an upper cover body 111 and a first reinforcing edge 112 connected to at least one side edge of the upper cover body 111, the first reinforcing plate 120 is connected to the upper cover 110, and a reinforcing cavity 130 is formed between the first reinforcing plate 120 and the first reinforcing edge 112.

[0084] The upper cover 110 faces the lower frame 300. The upper cover 110 is the supporting body of the upper cover assembly 100. The upper cover 110 includes an upper cover body 111, which can be rectangular, circular, elliptical, or other polygonal. The following explanation will use a rectangular upper cover body 111 as an example.

[0085] The upper cover body 111 has a first reinforcing edge 112 on at least one side edge, that is, the first reinforcing edge 112 is connected to the upper cover body 111 and extends outward from the upper cover body 111.

[0086] When the upper cover body 111 is rectangular, the upper cover body 111 has four sides. For example, a first reinforcing edge 112 can be provided on the edge of one side of the upper cover body 111, on the edges of two sides of the upper cover body 111, on the edges of three sides of the upper cover body 111, or on the edges of all four sides of the upper cover body 111.

[0087] exist Figures 4 to 6 In the embodiment shown, the first reinforcing edge 112 can be integrally formed with the upper cover body 111.

[0088] The first reinforcing plate 120 is disposed on the side of the upper cover 110 away from the lower frame 300. The dimension of the first reinforcing plate 120 along the first direction X can be close to the dimension of the upper cover 110 along the first direction X, and the dimension of the first reinforcing plate 120 along the second direction Y can be close to the dimension of the upper cover 110 along the second direction Y.

[0089] The first reinforcing plate 120 is fastened onto the upper cover 110, connecting the first reinforcing plate 120 to the upper cover 110. For example, the first reinforcing plate 120 can be connected to the upper cover 110 via fasteners, or it can be bonded to the upper cover 110. At this time, a reinforcing cavity 130 is formed between the first reinforcing plate 120 and the first reinforcing edge 112, and the reinforcing cavity 130 is located at at least one edge of the upper cover assembly 100. For example, the reinforcing cavity 130 can be located at the edge of one side of the upper cover assembly 100, the edge of two sides of the upper cover assembly 100, the edge of three sides of the upper cover assembly 100, or the edge of all four sides of the upper cover assembly 100. That is, the reinforcing cavity 130 can be formed at any edge of the upper cover body 111 where the first reinforcing edge 112 is connected.

[0090] The reinforcing cavity 130 can increase the size of at least one side of the upper cover assembly 100 in the third direction Z, so that the upper cover assembly 100 has higher anti-torsion and deformation capability, thereby further increasing the strength of the upper cover assembly 100.

[0091] In addition, the upper cover body 111 and the reinforcing plate body 121 form a two-layer structure, and the reinforcing cavity 130 is formed on the peripheral side of the upper cover assembly 100, so that the thicknesses of the upper cover 110 and the reinforcing plate 120 can be set smaller to meet the strength requirements of the upper cover assembly 100, so that the material cost of the upper cover assembly 100 is smaller, and thus the upper cover assembly 100 can have higher strength and lower cost.

[0092] The upper cover assembly 100 provided by the application sets the upper cover 110 and the first reinforcing plate 120, the upper cover 110 includes an upper cover body 111 and a first reinforcing edge 112 connected to at least one side of the upper cover body 111; the first reinforcing edge 112 and the first reinforcing plate 120 have a reinforcing cavity 130 therebetween, which can increase the strength of the upper cover assembly 100, and the thicknesses of the upper cover 110 and the reinforcing plate 120 are set smaller, so that the material cost of the upper cover assembly 100 is smaller, and thus the upper cover assembly 100 can have higher strength and lower cost.

[0093] The first reinforcing plate 120 includes a reinforcing plate body 121 and a second reinforcing edge 122 connected to at least one side edge of the reinforcing plate body 121; the reinforcing plate body 121 is connected to the upper cover body 111, and the first reinforcing edge 112 and the second reinforcing edge 122 have a reinforcing cavity 130 therebetween.

[0094] The first reinforcing plate 120 includes a reinforcing plate body 121, and the reinforcing plate body 121 can also be rectangular, and the size of the reinforcing plate body 121 in the first direction X can be close to the size of the upper cover body 111 in the first direction X, and the size of the reinforcing plate body 121 in the second direction Y can be close to the size of the upper cover body 111 in the second direction Y.

[0095] At least one side of the reinforcing plate body 121 is provided with the second reinforcing edge 122, that is, the second reinforcing edge 122 extends outward from the reinforcing plate body 121. The second reinforcing edge 122 corresponds to the first reinforcing edge 112. In Figures 4 to 6 In the illustrated embodiment, the second reinforcing edge 122 can be integrally formed with the reinforcing plate body 121.

[0096] The first reinforcing plate 120 is buckled on the upper cover 110, and the reinforcing plate body 121 is connected with the upper cover body 111. For example, the reinforcing plate body 121 can be connected with the upper cover body 111 by a fastener, or the reinforcing plate body 121 can be bonded with the upper cover body 111. At this time, the first reinforcing edge 112 and the second reinforcing edge 122 form a reinforcing cavity 130, and the reinforcing cavity 130 is located at the periphery of the upper cover assembly 100.

[0097] By connecting the upper cover body 111 and the reinforcing plate body 121, the upper cover assembly 100 forms a two-layer laminated structure. Compared with simply increasing the thickness of a structure, the laminated structure can further improve the strength of the upper cover assembly 100 due to the mutual restriction between the layers.

[0098] In addition, the outer surfaces of the upper cover 110 and the first reinforcing plate 120 can also be coated with a reinforcing coating. For example, a zinc-aluminum-magnesium plating layer can be applied to the outer surfaces of the upper cover 110 and the first reinforcing plate 120 by electrophoresis to further increase the strength of the upper cover 110 and the first reinforcing plate 120.

[0099] Figure 7 Another perspective structural schematic diagram of the upper cover assembly provided by the embodiment of the application; Figure 8 A structural schematic diagram of the upper cover assembly and the battery cell module in the battery pack provided by the embodiment of the application.

[0100] Referring to Figure 7 and Figure 8 By increasing the strength of the upper cover assembly 100, the upper cover assembly 100 has a load-bearing capacity, and the battery cell module 200 can be connected with the upper cover 110 in the upper cover assembly 100. The upper cover assembly 100 can share part of the weight of the battery cell module 200, thereby appropriately reducing the thickness of the lower frame 300, and thus reducing the material cost of the lower frame 300.

[0101] Specifically, the battery pack 10 further includes an adhesive member (not labeled in the figure), which is used to bond the battery cell module 200 and the upper cover 110.

[0102] The adhesive member can bond the battery cell module 200 to the side of the upper cover 110 away from the first reinforcing plate 120. The adhesive member occupies a small space in the third direction Z, and bonding through the adhesive member can reduce the size of the battery pack 10 in the third direction Z.

[0103] It should be noted that when assembling the battery pack 10, the upper cover assembly 100 is first placed on the operation table, so that the upper cover 110 faces upward, the battery cell module 200 is bonded to the upper cover 110 through the bonding member, and then the lower frame body 300 is inverted on the upper cover assembly 100, and the lower frame body 300 is connected with the upper cover assembly 100, and then the battery pack 10 is turned over to complete the assembly of the battery pack 10. The entire assembly process only needs to be turned over once, compared with the related art that the battery cell module is connected with the tray and needs to be turned over twice during the assembly process, the assembly process of the battery pack 10 can be simplified.

[0104] Figure 9 To follow the Figure 4 sectional view of A-A in FIG. Figure 2 .

[0105] Referring to Figure 9 , the upper cover assembly 100 further comprises a filling member 140, and the filling member 140 is filled in the reinforcing cavity 130.

[0106] The base material of the upper cover 110 and the first reinforcing plate 120 in the upper cover assembly 100 is usually steel or other high-strength metal to ensure the strength of the upper cover assembly 100. The filling member 140 can be foamed glue or other light-weight materials, and the cost of the filling member 140 is also lower than that of steel. Filling the filling member 140 in the reinforcing cavity 130 can further increase the strength of the upper cover assembly 100 under the premise of small increase in the weight and cost of the upper cover assembly 100.

[0107] Please continue to refer to Figure 6 and Figure 9 , the first reinforcing edge 112 is bent away from the second reinforcing edge 122 from the upper cover body 111 to form the reinforcing cavity 130 between the first reinforcing edge 112 and the second reinforcing edge 122.

[0108] The upper cover body 111 is attached to the reinforcing plate body 121, and thus the first reinforcing edge 112 is bent away from the second reinforcing edge 122 from the upper cover body 111, so that the first reinforcing edge 112 and the second reinforcing edge 122 have a spacing in the third direction Z, and this spacing can form the reinforcing cavity 130 between the first reinforcing edge 112 and the second reinforcing edge 122.

[0109] By bending the first reinforcing edge 112 away from the second reinforcing edge 122 from the upper cover body 111, the reinforcing cavity 130 is formed, and at the same time, the first reinforcing edge 112 and the upper cover body 111 form an inverted bowl-shaped structure, which facilitates the buckling of the upper cover 110 on the lower frame body 300. In addition, the side of the first reinforcing plate 120 away from the upper cover 110 is a planar structure, which also facilitates the connection of the upper cover assembly 100 and the mounting bracket 20 of the vehicle 1000.

[0110] In one possible implementation, the second reinforcing edge 122 is bent away from the first reinforcing edge 112 from the reinforcing plate body 121, and the reinforcing cavity 130 can also be formed between the first reinforcing edge 112 and the second reinforcing edge 122. In another possible implementation, the second reinforcing edge 122 is bent away from the first reinforcing edge 112 from the reinforcing plate body 121, and the first reinforcing edge 112 is bent away from the second reinforcing edge 122 from the upper cover body 111, and the reinforcing cavity 130 can also be formed between the first reinforcing edge 112 and the second reinforcing edge 122.

[0111] Please continue to refer to Figure 6 and Figure 9 As shown, part of the second reinforcing edge 122 is bent towards the first reinforcing edge 112 and connected with the first reinforcing edge 112.

[0112] The edge of the second reinforcing edge 122 is bent towards the first reinforcing edge 112 to be close to or contact the first reinforcing edge 112, so as to connect the second reinforcing edge 122 with the first reinforcing edge 112.

[0113] Please continue to refer to Figure 6 and Figure 9 As shown, the upper cover assembly 100 further comprises a fastener 113, the second reinforcing edge 122 and the first reinforcing edge 112 are connected through the fastener 113, and the fastener 113 is used to be connected with the lower frame body 300 of the battery pack.

[0114] The fastener 113 can be a projection nut or other fastener, and the fastener 113 is arranged in the first reinforcing edge 112 and the second reinforcing edge 122 to connect the first reinforcing edge 112 and the second reinforcing edge 122. The fastener 113 can be provided with a threaded hole towards the other side of the lower frame body 300, and the threaded hole has an internal thread, and other fasteners such as fastening bolts can be arranged in the lower frame body 300 and the threaded hole to connect the upper cover assembly 100 with the lower frame body 300.

[0115] In another implementation, the second reinforcing edge 122 and the first reinforcing edge 112 can also be connected by the method of sealing glue bonding and then spot welding.

[0116] The upper cover body 111 is connected with the first reinforcing edge 112 at least along the two side edges of the first direction X, and the reinforcing plate body 121 is connected with the second reinforcing edge 122 at least along the two side edges of the first direction.

[0117] The upper cover body 111 has a large size along the second direction Y, and therefore, the first reinforcing edges 112 can be arranged at two edges extending along the second direction Y, that is, the first reinforcing edges 112 are connected to both side edges along the first direction X. The second reinforcing edges 122 are arranged at two edges extending along the second direction Y on the reinforcing plate body 121. The upper cover assembly 100 is prone to deformation in the direction with a large size, and therefore, the reinforcing cavities 130 arranged along the direction with a large size can improve the deformation resistance of the upper cover assembly 100.

[0118] Please continue to refer to Figure 5 As shown in the figure, at least one stress buffer window 1211 is arranged on the reinforcing plate body 121.

[0119] By arranging the stress buffer window 1211 on the reinforcing plate body 121, the deformation of the reinforcing plate body 121 can be reduced, and the weight of the reinforcing plate body 121 can also be reduced. One stress buffer window 1211 can be arranged on the reinforcing plate body 121, two or more stress buffer windows 1211 can be arranged on the reinforcing plate body 121, and in the embodiment, three stress buffer windows 1211 are schematically shown. Figure 5

[0120] Please continue to refer to Figure 5 As shown in the figure, the sealing glue 150 is arranged between the reinforcing plate body 121 and the upper cover body 111, and the sealing glue 150 is located at the edge of the reinforcing plate body 121 and / or the peripheral side of the stress buffer window 1211.

[0121] Specifically, the sealing glue 150 can be arranged at the edge of the reinforcing plate body 121, and the sealing glue 150 bonds the edge of the reinforcing plate body 121 and the edge of the upper cover body 111. In this way, the liquid in the reinforcing cavity 130 can be prevented from entering the device through the gap between the reinforcing plate body 121 and the upper cover body 111 and passing through the stress buffer window 1211.

[0122] In some embodiments, the sealing glue 150 can also be arranged on the peripheral side of the stress buffer window 1211 to seal the gap between the reinforcing plate body 121 and the upper cover body 111 multiple times. The sealing glue 150 can be spot welding sealing glue, which has strong bonding force and good corrosion resistance.

[0123] The upper cover body 111 is provided with a maintenance window 1111 on one side along the second direction Y, the first reinforcing edge 112 is connected to the other side edge of the upper cover body 111 along the second direction Y, the second reinforcing edge 122 is connected to the side edge of the reinforcing plate body 121 corresponding to the first reinforcing edge 112 along the second direction Y, and the projection of the reinforcing plate body 121 on the upper cover body 111 is arranged apart from the maintenance window 1111.

[0124] ​The maintenance window 1111 is roughly aligned with the battery manager 400 on the tray 300 along the third direction Z to facilitate maintenance of the battery manager 400 from the maintenance window 1111. At the maintenance window 1111, the upper cover body 111 is not covered by the reinforcing plate body 121 so that the reinforcing plate body 121 avoids the maintenance window 1111.

[0125] The upper cover body 111 is connected to a first reinforcing edge 112 along the second direction Y on the side opposite to the maintenance window 1111. A second reinforcing edge 122 is also provided at the corresponding position on the reinforcing plate body 121. The first reinforcing edge 112 and the second reinforcing edge 122 also form a reinforcing cavity 130 on the side opposite to the maintenance window 1111, so as to further increase the strength of the upper cover assembly 100.

[0126] The top cover assembly 100 also includes at least one crossbeam 170, which extends along a first direction X and is disposed on the side of the reinforcing plate body 121 opposite to the top cover body 111, and the crossbeam 170 is connected to the reinforcing plate body 121.

[0127] The crossbeam 170 can extend along the first direction X, in Figure 4 and Figure 5 Three crossbeams 170 are shown, which can further increase the strength of the upper cover assembly 100. Please continue to see Figure 1 As shown, the mounting bracket 20 includes three mounting beams: a front seat beam 21, a body beam 22, and a rear seat beam 23. The three crossbeams 170 are connected to the front seat beam 21, body beam 22, and rear seat beam 23 respectively.

[0128] Figure 10 For along Figure 4 Sectional view of BB, Figure 11 For along Figure 4 A sectional view of CC.

[0129] See Figure 4 , Figure 5 , Figure 10 and Figure 11 As shown, the upper cover assembly 100 also includes a first connector 160 corresponding to both ends of the crossbeam 170. The first connector 160 is at least partially located in the reinforcing cavity 130. The first connector 160 includes a first connecting portion 161 and a second connecting portion 162. The first connecting portion 161 is connected to the first reinforcing edge 112, and the second connecting portion 162 is connected to the second reinforcing edge 122. The first connector 160 is used to connect to the vehicle 1000.

[0130] The first reinforcing edge 112 has a first mounting hole 1121, and the first connecting piece 160 is inserted into the first mounting hole 1121 at one end of the first reinforcing edge 112. The first connecting piece 160 can be provided with a first connecting portion 161 at a position close to the first reinforcing edge 112. The first connecting portion 161 is overlapped on the first reinforcing edge 112 and connected with the first reinforcing edge 112. For example, the first connecting portion 161 can be welded with the first reinforcing edge 112 by laser penetration welding.

[0131] The second reinforcing edge 122 has a second mounting hole 1221, and the first connecting piece 160 is inserted into the second mounting hole 1221 at one end of the second reinforcing edge 122. The first connecting piece 160 can be provided with a second connecting portion 162 at a position close to the second reinforcing edge 122. The second connecting portion 162 is overlapped on the second reinforcing edge 122 and connected with the second reinforcing edge 122. For example, the first connecting portion 161 can be welded with the second reinforcing edge 122 by laser brazing.

[0132] The battery pack 10 further comprises an adapter (not shown in the figure), which is connected with the first connecting piece 160. For example, the first connecting piece 160 has a threaded hole 163, and the adapter is inserted into the threaded hole 163 to be screwed with the first connecting piece 160. The adapter is used to connect the upper and lower frame bodies 300 with the upper cover assembly 100. The end of the first connecting piece 160 away from the adapter is used to connect with the vehicle 1000. By arranging the first connecting piece 160 at both ends of the cross beam 170, the upper cover assembly 100 can be connected with the lower frame body 300 and the vehicle 1000 at positions where the upper cover assembly 100 has high strength, thereby reducing the force borne by other regions of the upper cover assembly 100.

[0133] By clamping the first connecting piece 160 between the first reinforcing edge 112 and the second reinforcing edge 122, the movement of the first connecting piece 160 and the adapter connected with the first connecting piece 160 along the third direction Z can be limited, thereby reducing the stress at the connection between the first connecting piece 160 and the first reinforcing edge 112 and the second reinforcing edge 122.

[0134] The upper cover assembly 100 is also provided with the first connecting piece 160 at positions aligned with the cross beam 170. The first connecting pieces 160 are arranged at intervals along the edges of the upper cover assembly 100. These first connecting pieces 160 are used to connect with the vehicle 1000, thereby increasing the reliability of the connection between the upper cover assembly 100 and the vehicle 100.

[0135] Please continue to refer to Figure 10 and Figure 11 The upper cover assembly 100 further comprises a filler 140 connected to at least part of the outer circumferential surface of the first connecting piece 160 and connected to the first reinforcing edge 112 and the second reinforcing edge 122.

[0136] The filler 140 wraps around part of the outer circumference of the first connecting member 160 and covers the first reinforcing edge 112 and the second reinforcing edge 122, which can reduce the strength loss of the upper cover assembly 100 due to the arrangement of the first connecting member 160.

[0137] Referring to Figure 4 , Figure 5 and Figure 11 , the cross beam 170 has a hollow structure 171 between the reinforcing plate body 121, and the hollow structure 171 is provided with a second connecting member 172 for connecting with the vehicle 1000.

[0138] The cross beam 170 protrudes from the surface of the reinforcing plate body 121, and the hollow structure 171 is formed between the cross beam 170 and the reinforcing plate body 121. The cross beam 170 has a through hole 173, one end of the second connecting member 172 is connected with the reinforcing plate body 121, and the other end of the second connecting member 172 is aligned with the through hole 173 so that the second connecting member 172 can be connected with the mounting beam in the mounting frame 20. That is, the cross beam 170 can increase the strength of the upper cover assembly 100 while facilitating the connection with the mounting frame 20 of the vehicle 1000.

[0139] In addition, the arrangement of the cross beam 170 on the side of the first reinforcing plate 120 can also avoid the cross beam 170 occupying the space in the accommodating cavity of the battery pack 10, so that more battery cells 210 or other devices can be accommodated in the accommodating cavity.

[0140] Please continue to refer to Figure 1 , Figure 3 and Figure 4 , the vehicle 1000 further comprises a sealing ring 30 arranged between the mounting frame 20 and the upper cover assembly 100, and the upper cover assembly 100 serves as the floor of the vehicle 1000. The sealing ring 30 is also schematically shown in Figure 5 , Figure 10 and Figure 11 .

[0141] The upper cover assembly 100 has high strength, which can protect the battery cell module 200 in the battery pack 10 while being connected with the mounting frame 20 of the vehicle 1000 to serve as the floor of the vehicle 1000, thereby reducing the components in the vehicle 1000 and simplifying the structure of the vehicle 1000. The sealing ring 30 is arranged between the upper cover assembly 100 and the mounting frame 20, which can seal the gap between the upper cover assembly 100 and the mounting frame 20.

[0142] Please continue to refer to Figure 5As shown, the upper cover assembly 100 further comprises a second reinforcing plate 124, the upper cover body 111 is connected with a first reinforcing edge 112 near a side edge of the maintenance window 1111, and the second reinforcing plate 124 is arranged around at least one side of the maintenance window 1111 and is connected with the first reinforcing edge 112.

[0143] The second reinforcing plate 124 is used for reinforcing the position of the maintenance window 1111 of the upper cover 110. Specifically, the second reinforcing plate 124 can be arranged around the circumferential side of the maintenance window 1111, and the second reinforcing plate 124 can be connected with the first reinforcing edge 112 through spot welding and sealing glue, so that the influence of the maintenance window 1111 on the strength of the upper cover 110 can be reduced.

[0144] Please continue to see Figure 5 As shown, the upper cover assembly 100 further comprises a maintenance window cover plate 190, the maintenance window cover plate 190 covers the maintenance window 1111, and the maintenance window cover plate 190 is connected with the upper cover body 111 through the projection welding nut 1112.

[0145] For example, the upper cover body 111 can be provided with the projection welding nut 1112 around the circumferential side of the maintenance window 1111, and the maintenance window cover plate can be connected with the projection welding nut 1112 through bolts, and the break torque of the projection welding nut 1112 is high, so that the connection between the projection welding nut 1112 and the upper cover body 111 can still maintain a sealed state during the locking of the bolts.

[0146] Figure 12 For Figure 4 The enlarged view of D in the middle.

[0147] See Figure 12 As shown, the second reinforcing plate 124 comprises a water-blocking edge 125, and the water-blocking edge 125 wraps around the side of the first reinforcing edge 112.

[0148] The water-blocking edge 125 is folded from the second reinforcing plate 124 to the side of the first reinforcing edge 112 away from the first reinforcing plate 120 or the second reinforcing plate 124, so that the water-blocking edge 125 can block the gap between the first reinforcing edge 112 and the second reinforcing plate 124, and prevent liquid from entering the upper cover assembly 100 from the gap.

[0149] Please continue to see Figure 7 and Figure 8 As shown, the upper cover assembly 100 further comprises a limiting plate 180, the limiting plate 180 is connected to the side of the upper cover body 111 away from the first reinforcing plate 120, and the limiting plate 180 is used for limiting the battery cell module 200.

[0150] Specifically, the number of the limiting plates 180 is two, the two limiting plates 180 are connected at two ends of the upper cover assembly 100 along the second direction Y, and the two limiting plates 180 are clamped at two sides of the battery cell module 200. When the battery cell 210 in the battery cell module 200 expands due to heat, the limiting plate 180 can limit the battery cell module 200 along the second direction Y. The side surface of the limiting plate 180 further comprises a triangular supporting piece 181, which abuts at the connection between the limiting plate 180 and the upper cover body 111 to increase the carrying capacity of the limiting plate 180.

[0151] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An upper cover assembly, characterized by, Comprising: an upper cover (110) comprising an upper cover body (111) and a first reinforcing edge (112) connected to at least one side edge of the upper cover body (111); a first reinforcing plate (120) connected to the upper cover (110), the first reinforcing plate (120) and the first reinforcing edge (112) having a reinforcing cavity (130) therebetween.

2. The overcap assembly of claim 1, wherein, The first reinforcing plate (120) comprises a reinforcing plate body (121) and a second reinforcing edge (122) connected to at least one side edge of the reinforcing plate body (121); The reinforcing plate body (121) is connected to the upper cover body (111), and the first reinforcing edge (112) and the second reinforcing edge (122) have the reinforcing cavity (130) therebetween.

3. The overcap assembly of claim 2, wherein, The first reinforcing edge (112) is bent away from the second reinforcing edge (122) from the upper cover body (111) to form the reinforcing cavity (130) between the first reinforcing edge (112) and the second reinforcing edge (122).

4. The overcap assembly of claim 3, wherein, Part of the second reinforcing edge (122) is bent towards the first reinforcing edge (112) and connected thereto.

5. The overcap assembly of claim 4, wherein, Further comprising a fastener (113), the second reinforcing edge (122) and the first reinforcing edge (112) are connected by the fastener (113), and the fastener (113) is used to connect with a lower frame body (300) of a battery pack.

6. The upper cover assembly of claim 2, wherein: The upper cover body (111) is connected with the first reinforcing edge (112) along at least two side edges in a first direction, and the reinforcing plate body (121) is connected with the second reinforcing edge (122) along at least two side edges in the first direction.

7. The overcap assembly of claim 6, wherein, At least one stress buffer window (1211) is provided on the reinforcing plate body (121).

8. The overcap assembly of claim 7, wherein, A sealant (150) is provided between the reinforcing plate body (121) and the upper cover body (111), the sealant (150) is located at an edge of the reinforcing plate body (121), and / or the sealant (150) is located at a circumferential side of the stress buffer window (1211).

9. The overcap assembly of claim 6, wherein, The upper cover body (111) is provided with a maintenance window (1111) along one side in a second direction, the upper cover body (111) is connected with the first reinforcing edge (112) along another side edge in the second direction, the reinforcing plate body (121) is connected with the second reinforcing edge (122) along a side edge corresponding to the first reinforcing edge (112) in the second direction, a projection of the reinforcing plate body (121) on the upper cover body (111) is arranged spaced apart from the maintenance window (1111), and the second direction intersects the first direction.

10. The overcap assembly of any one of claims 6 to 9, wherein, Further comprising at least one cross beam (170) extending along the first direction and arranged on a side of the reinforcing plate body (121) away from the upper cover body (111), the cross beam (170) being connected with the reinforcing plate body (121).

11. The overcap assembly of claim 10, wherein, Further comprising a plurality of first connecting pieces (160) corresponding to both ends of the cross beam (170), the first connecting piece (160) is at least partially located in the reinforcing cavity (130), the first connecting piece (160) comprises a first connecting part (161) and a second connecting part (162), the first connecting part (161) is connected with the first reinforcing edge (112), the second connecting part (162) is connected with the second reinforcing edge (122), and the first connecting piece (160) is used for connecting with the electrical equipment.

12. The overcap assembly of claim 11, wherein, Further comprising a filler (140), the filler (140) is connected to at least part of the outer circumferential surface of the first connecting piece (160) and is connected to the first reinforcing edge (112) and the second reinforcing edge (122).

13. The overcap assembly of claim 11, wherein, The cross beam (170) and the reinforcing plate body (121) have a hollow structure (171), and a second connecting piece (172) is arranged in the hollow structure (171), and the second connecting piece (172) is used for connecting with the electrical equipment.

14. The overcap assembly of any one of claims 1 to 9, wherein, Further comprising a filler (140), the filler (140) is filled in the reinforcing cavity (130).

15. The overcap assembly of any one of claims 2 to 9, wherein, Further comprising a first connecting piece (160), the first connecting piece (160) connects the first reinforcing edge (112) and the second reinforcing edge (122), and the first connecting piece (160) is used for connecting with the electrical equipment.

16. The overcap assembly of claim 9, wherein, Further comprising a second reinforcing plate (124), the upper cover body (111) is connected with the first reinforcing edge (112) on one side edge close to the maintenance window (1111), and the second reinforcing plate (124) is arranged on at least one side of the maintenance window (1111) and is connected with the first reinforcing edge (112).

17. The overcap assembly of claim 16, wherein, The second reinforcing plate (124) comprises a water blocking edge (125), and the water blocking edge (125) wraps the side surface of the first reinforcing edge (112).

18. The overcap assembly of claim 16, wherein, Further comprising a maintenance window cover plate (190), the maintenance window cover plate (190) covers the maintenance window (1111), and the maintenance window cover plate (190) is connected with the upper cover body (111) through a projection welding nut (1112).

19. The overcap assembly of any one of claims 1 to 9, wherein, Further comprising a limiting plate (180), the limiting plate (180) is connected to one side of the upper cover body (111) away from the first reinforcing plate (120), and the limiting plate (180) is used for limiting the electric core module (200).

20. A battery pack, characterized by The battery pack (10) further comprises an adhesive, the adhesive is used for bonding the electric core module (200) and the upper cover (110).

21. The battery pack of claim 20, wherein, Further comprising a filler (140), the filler (140) is filled in the reinforcing cavity (130). Further comprising a first connecting piece (160), the first connecting piece (160) connects the first reinforcing edge (112) and the second reinforcing edge (122), and the first connecting piece (160) is used for connecting with the electrical equipment. Further comprising a second reinforcing plate (124), the upper cover body (111) is connected with the first reinforcing edge (112) on one side edge close to the maintenance window (1111), and the second reinforcing plate (124) is arranged on at least one side of the maintenance window (1111) and is connected with the first reinforcing edge (112). The second reinforcing plate (124) comprises a water blocking edge (125), and the water blocking edge (125) wraps the side surface of the first reinforcing edge (112). Further comprising a maintenance window cover plate (190), the maintenance window cover plate (190) covers the maintenance window (1111), and the maintenance window cover plate (190) is connected with the upper cover body (111) through a projection welding nut (1112). Further comprising a limiting plate (180), the limiting plate (180) is connected to one side of the upper cover body (111) away from the first reinforcing plate (120), and the limiting plate (180) is used for limiting the electric core module (200). The battery pack (10) further comprises an adhesive, the adhesive is used for bonding the electric core module (200) and the upper cover (110).

22. An electrical device, comprising: The battery pack (10) as claimed in claim 20 or 21, comprising a cross beam (170), wherein the cross beam (170) is connected with the mounting rack (20).

23. The powered device of claim 22, wherein, The power consuming device further comprises a sealing ring (30), which is arranged between the mounting rack (20) and the upper cover assembly (100).

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