Battery device, electric equipment and energy storage device

Abstract

The utility model relates to the technical field of batteries, and provides a battery device, electric equipment and an energy storage device, and the battery device comprises a battery box, a battery monomer assembly, a supporting beam and a glue blocking piece. The battery box comprises a bottom plate and a box cover, the bottom plate is used for bearing a battery monomer assembly, the box cover and the bottom plate are connected to define a containing space, and the battery monomer assembly is located in the containing space; the bonding layer connects the battery cell assembly and the bottom plate. The supporting beam is arranged in the accommodating space, is arranged on the bottom plate and is positioned on the peripheral side of the battery monomer assembly. The glue blocking piece comprises a glue blocking wall and a bottom wall, the glue blocking wall is connected with the bottom wall, the supporting beam, the glue blocking wall and the bottom plate jointly define a containing groove, the battery monomer assembly is arranged in the containing groove, and the bottom wall is bonded with the battery monomer assembly through a bonding layer. The supporting beam and the glue blocking wall surround the periphery of the battery monomer assembly, and the supporting beam and the glue blocking wall can jointly block the liquid bonding layer, so that the liquid bonding layer is prevented from continuously flowing to the outside of the placement groove to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device, an electric device and an energy storage device. BACKGROUND

[0002] The battery device can be used for storing or providing electric energy, and can be used for an electric device, for example, a vehicle or an energy storage device.

[0003] In the related art, the battery device includes a battery box and a battery monomer assembly arranged in the battery box, and the battery monomer assembly is bonded to the bottom plate of the battery box by means of glue. During the in-box assembly of the battery monomer assembly, the battery monomer assembly extrudes the glue in liquid state downward, causing the glue to overflow around the battery monomer assembly, and the overflowed glue is likely to contaminate other parts of the battery box and is difficult to clean. UTILITY MODEL CONTENT

[0004] Therefore, the embodiments of the present application aim to provide a battery device, an electric device and an energy storage device, and the support beam and the glue blocking wall can jointly block the adhesive layer in liquid state.

[0005] To achieve the above-mentioned purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The embodiments of the present application provide a battery device, which comprises:

[0007] a battery monomer assembly;

[0008] a battery box comprising a bottom plate and a box cover, the bottom plate being used for carrying the battery monomer assembly, the box cover being connected to the bottom plate to define a containing space, the battery monomer assembly being located in the containing space; and an adhesive layer connecting the battery monomer assembly and the bottom plate;

[0009] a support beam arranged in the containing space, the support beam being arranged on the bottom plate and located on the peripheral side of the battery monomer assembly; and

[0010] a glue blocking member comprising a glue blocking wall and a bottom wall, the glue blocking wall being connected to the bottom wall, the support beam, the glue blocking wall and the bottom plate jointly forming a placing groove, the battery monomer assembly being arranged in the placing groove, and the bottom wall being bonded to the battery monomer assembly by means of the adhesive layer.

[0011] The battery device provided by the embodiments of the present application can improve the connection stability of the glue blocking member and the glue blocking reliability of the glue blocking member by bonding the bottom wall to the battery monomer assembly through the adhesive layer. During the assembly of the battery monomer assembly into the placement groove, the liquid adhesive layer is extruded by the battery monomer assembly and the bottom plate and flows to the periphery of the battery monomer assembly. The support beam and the glue blocking wall surround the periphery of the battery monomer assembly, and the support beam and the glue blocking wall can jointly block the liquid adhesive layer, thereby preventing the liquid adhesive layer from flowing to the outside of the placement groove to a certain extent. In this way, the glue blocking member is added and the support beam is reused to block the liquid adhesive layer, and the bottom plate no longer needs to be provided with a closed-loop frame for glue blocking, thereby reducing the cost and the manufacturing process difficulty.

[0012] In some embodiments, the battery monomer assembly is arranged on the first side of the bottom plate along the first direction, and the projection of the battery monomer assembly, the projection of the adhesive layer, and the projection of the bottom wall partially overlap.

[0013] In this embodiment, part of the adhesive layer is clamped between the battery monomer assembly and the bottom wall. During the assembly of the battery monomer assembly into the placement groove, the force applied by the battery monomer assembly can be transmitted to the bottom wall, so that the bottom wall can be pressed tightly against the bottom plate, thereby further reducing the risk of displacement of the glue blocking member during assembly.

[0014] In some embodiments, the battery monomer assembly is arranged on the first side of the bottom plate along the first direction, and the glue blocking member includes a connecting wall connected to one end of the glue blocking wall along a second direction, and the connecting wall is bent towards the side where the battery monomer assembly is located, and the connecting wall is connected to the support beam, and the first direction is perpendicular to the second direction.

[0015] In this embodiment, the connecting wall is connected to the support beam, and the end of the glue blocking wall along the second direction is fixed, thereby reducing the risk of deformation and displacement of the glue blocking member caused by extrusion of the overflowed glue, and further improving the connection stability of the glue blocking member.

[0016] In some embodiments, the connecting wall and the support beam are bonded and / or connected by fasteners.

[0017] In this embodiment, the connecting wall and the support beam are bonded and / or connected by fasteners, and the connection method is simple and convenient to operate.

[0018] In some embodiments, the battery monomer assembly is arranged on the first side of the bottom plate along the first direction, and the glue blocking wall includes an end portion and a main body portion, the end portion connects the main body portion and the connecting wall, the end portion is connected to the end surface of the support beam in a third direction, and the first direction and the third direction are perpendicular to each other.

[0019] In this embodiment, the end portion is connected to the end surface of the support beam in the third direction. In this way, the connection stability of the glue blocking member can be improved, and the probability of glue being hidden in the gap between the end portion and the support beam can be reduced.

[0020] In some embodiments, the main body portion protrudes the end portion in the first direction.

[0021] In this embodiment, the main body portion is mainly used to block the overflow of the glue of the adhesive layer. The main body portion protrudes the end portion in the first direction, and the size of the main body portion in the first direction is greater than the size of the end portion in the first direction. The overflowed glue needs to climb a higher height to spread to the outside of the placement groove through the main body portion, so that the glue blocking reliability can be improved.

[0022] In some embodiments, the glue blocking wall is spaced apart from the side surface of the battery monomer assembly to form a glue containing space.

[0023] In this embodiment, the glue blocking wall is spaced apart from the side surface of the battery monomer assembly to form a glue containing space. During the assembly of the battery monomer assembly to the placement groove, the overflowed glue of the adhesive layer can enter the glue containing space, so that the extrusion force of the glue on the glue blocking wall is reduced.

[0024] In some embodiments, the end of the glue blocking wall away from the bottom wall is connected to the battery monomer assembly.

[0025] In this embodiment, the end of the glue blocking wall away from the bottom wall is connected to the battery monomer assembly. In this way, the connection stability of the glue blocking member can be further improved, and the glue blocking wall can be prevented from being pressed by the box cover during the assembly of the box cover and the bottom plate.

[0026] In some embodiments, the surface of the bottom wall away from the glue blocking wall is bonded to the bottom plate.

[0027] In this embodiment, the glue blocking member can be fixed to the bottom plate. The assembly difficulty of the glue blocking member is low, and the glue blocking member is easy to operate. The risk of the glue blocking member being forced to move is reduced.

[0028] In some embodiments, the battery monomer assembly is connected to the support beam; and / or,

[0029] The glue blocking member is a flexible structure; and / or,

[0030] The glue blocking member is an insulating structure.

[0031] In the embodiment, the bottom plate and the support beams provide fixing effects for the battery monomer assembly, so that the battery monomer assembly is prevented from being displaced due to impact or other acting forces. The glue blocking members are flexible structures. In this way, the glue blocking members can be elastically deformed under the extrusion force of the glue overflowed from the adhesive layer, so that the elastic deformation can be used to increase the space for accommodating the glue, and the glue is prevented from flowing to other positions due to excessive reaction force.

[0032] In some embodiments, the battery monomer assembly is arranged on a first side of the bottom plate along a first direction, the battery monomer assembly includes a monomer unit, the monomer unit includes at least two battery monomers stacked along a second direction, the second direction is perpendicular to the largest surface of the battery monomers, two support beams are arranged on both sides of the monomer unit along the second direction, and two glue blocking members are arranged at intervals along a third direction, and two ends of each glue blocking member along the second direction are connected to two support beams, respectively. The first direction, the second direction, and the third direction are perpendicular to each other.

[0033] In the embodiment, the two support beams and the two glue blocking members are sequentially connected to form a closed loop structure. The two support beams not only provide stable support for the battery monomer assembly to prevent displacement of the battery monomer assembly due to unstable fixation, but also provide fixing positions for the two glue blocking members, so that the two ends of the two glue blocking members along the second direction can be effectively fixed to prevent displacement of the glue blocking members.

[0034] The power consumption equipment provided in the embodiments of the present application includes the battery device provided in the embodiments of the present application, and has the same or corresponding beneficial effects as the battery device.

[0035] The power consumption equipment provided in the embodiments of the present application includes the battery device provided in the embodiments of the present application, and has the same or corresponding beneficial effects as the battery device.

[0036] The power consumption equipment provided in the embodiments of the present application includes the battery device provided in the embodiments of the present application, and has the same or corresponding beneficial effects as the battery device.

[0037] The power consumption equipment provided in the embodiments of the present application includes the battery device provided in the embodiments of the present application, and has the same or corresponding beneficial effects as the battery device. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle in the embodiments of the present application;

[0039] Figure 2 FIG. 1 is a structural schematic diagram of a vehicle in the embodiments of the present application;

[0040] Figure 3 Fig. 1 is a schematic view of a battery device according to an embodiment of the present application; Figure 2 Fig. 2 is a schematic view of a partial structure of the battery device shown in Fig. 1, wherein a case cover is not shown;

[0041] Figure 4 Fig. 3 is an exploded schematic view of the structure shown in Fig. 2; Figure 3

[0042] Figure 5 Fig. 4 is a schematic view of the structure shown in Fig. 3 from another perspective; Figure 3

[0043] Figure 6 Fig. 5 is a schematic view of a cross section in the direction of A-A in Fig. 4; Figure 5

[0044] Figure 7 Fig. 6 is an enlarged schematic view of a portion at B in Fig. 5; Figure 6

[0045] Figure 8 Fig. 7 is a schematic view of a structure of a first kind of glue blocking member according to an embodiment of the present application;

[0046] Figure 9 Fig. 8 is an enlarged schematic view of a portion at C in Fig. 7; Figure 8

[0047] Figure 10 Fig. 9 is a schematic view of an assembly of a bottom plate, the first kind of glue blocking member and a support beam according to an embodiment of the present application;

[0048] Figure 11 Fig. 10 is an enlarged schematic view of a portion at D in Fig. 9; Figure 10

[0049] Figure 12 Fig. 11 is a schematic view of a structure of a second kind of glue blocking member according to an embodiment of the present application;

[0050] Figure 13 Fig. 12 is an enlarged schematic view of a portion at E in Fig. 11; Figure 12

[0051] Fig. 13 is a schematic view of an assembly of a bottom plate, the second kind of glue blocking member and a support beam according to an embodiment of the present application; Figure 14

[0052] Figure 15 Fig. 14 is another schematic view of a partial structure of a battery device according to an embodiment of the present application, wherein a folded sub-portion of a glue blocking wall is connected to a battery cell assembly.

[0053] Explanation of Reference Signs

[0054] ​​​​​​​1000, vehicle; 100, battery device; 100a, glue containing space; 200, controller; 300, motor; 1, battery box; 1a, placing groove; 11, bottom plate; 12, support beam; 13, glue blocking piece; 131, glue blocking wall; 1311, end portion; 1312, main body portion; 13121, glue containing sub-portion; 13122, folded sub-portion; 132, bottom wall; 133, connecting wall; 133a, through hole; 14, adhesive layer; 15, box cover; 2, battery cell assembly; 21, end plate; 22, battery cell; 20, cell unit; 3, fastener. DETAILED DESCRIPTION

[0055] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0057] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0058] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] It should be noted that in the present application, at least two includes two and more than two. Multiple includes two and more than two. The first direction, the second direction and the third direction are perpendicular to each other, the first direction is represented as X, the second direction is represented as Y, and the third direction is represented as Z. The first side and the second side are the two sides opposite to the first direction, the first side is represented as X1, and the second side is represented as X2. Upward refers to the direction towards the sky, downward is opposite to upward, and downward is the direction towards the ground.

[0060] Please refer to Figures 1 to 3To facilitate understanding of the battery monomer 22, the battery device 100 and the electric equipment provided in the embodiments of the present application, some basic structures of the battery monomer 22, the battery device 100 and the electric equipment provided in the embodiments of the present application are introduced first.

[0061] In the embodiments of the present application, the battery monomer 22 can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging.

[0062] The battery monomer 22 can be a lithium ion battery monomer, a sodium ion battery monomer, a sodium lithium ion battery monomer, a lithium metal battery monomer, a sodium metal battery monomer, a lithium sulfur battery monomer, a magnesium ion battery monomer, a nickel hydrogen battery monomer, a nickel cadmium battery monomer or a lead storage battery monomer, etc., and the embodiments of the present application are not limited thereto.

[0063] The battery monomer 22 generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode and a separator, and the separator is arranged between the negative electrode and the positive electrode. During the charging and discharging process of the battery monomer 22, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator arranged between the positive electrode and the negative electrode can prevent the positive and negative electrodes from short-circuiting, and at the same time, the active ions can pass through.

[0064] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0065] As an example, the positive electrode current collector has two opposite surfaces in the thickness direction of itself, and the positive electrode active material is arranged on any one or both of the two opposite surfaces of the positive electrode current collector.

[0066] As an example, the positive electrode current collector can adopt a metal foil, a conductive polymer material, a carbon material or a composite current collector. For example, as a metal foil, pure metal, alloy, surface-treated metal can be adopted, including but not limited to stainless steel, copper, aluminum, nickel, nickel, titanium or silver, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material base material (such as a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0067] As an example, the positive electrode active material can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material can also be used. These positive electrode active materials can be used alone only one or two or more can be used in combination. Among them, examples of the lithium-containing phosphate can include, but are not limited to, at least one of lithium iron phosphate (e.g., LiFeP04(also referred to as LFP)), a composite of lithium iron phosphate and carbon, lithium manganese phosphate (e.g., LiMnPO4), a composite of lithium manganese phosphate and carbon, lithium manganese iron phosphate, and a composite of lithium manganese iron phosphate and carbon. Examples of the lithium transition metal oxide can include, but are not limited to, at least one of lithium cobalt oxide (e.g., LiCoO2), lithium nickel oxide (e.g., LiNiO2), lithium manganese oxide (e.g., LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (e.g., LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O2(also referred to as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O2(also referred to as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O2(also referred to as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O2(also referred to as NCM 622 ), LiNi 0.8 Co 0.1 Mn 0.1 O2(also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (e.g., LiNi 0.8 Co 0.15 Al 0.05 O2), and modified compounds thereof. The modified compound refers to a substance obtained by a modification method such as doping or coating on the basis of the above-mentioned substances.

[0068] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0069] As an example, the negative current collector can employ a metal foil, a conductive polymer material, a carbon material, or a composite current collector. For example, as a metal foil, a pure metal, an alloy, a surface-treated metal, including but not limited to stainless steel, copper, aluminum, nickel, nickel, titanium, or silver, and the like can be employed. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, and the like) on a polymer material base material (such as a base material of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, and the like).

[0070] As an example, the negative electrode sheet can include a negative current collector and a negative active material disposed on at least one surface of the negative current collector.

[0071] As an example, the negative current collector has two surfaces opposite in the thickness direction thereof, and the negative active material is disposed on either one or both of the two opposite surfaces of the negative current collector.

[0072] As an example, the negative active material can employ a negative active material for a battery cell 22 known in the art. As an example, the negative active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, a silicon-based material, a tin-based material, and lithium titanate, and the like. The silicon-based material can be selected from at least one of elemental silicon, a silicon oxide compound, a silicon-carbon composite, a silicon-nitrogen composite, and a silicon alloy. The tin-based material can be selected from at least one of elemental tin, a tin oxide compound, and a tin alloy. However, the present application is not limited to these materials, and other conventional materials that can be used as a negative active material for a battery cell 22 can also be used. These negative active materials can be used alone or in combination with two or more.

[0073] In some embodiments, the negative electrode can employ a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, and the like. When the foamed metal is used as a negative electrode sheet, the surface of the foamed metal can not be provided with a negative active material, or can be provided with a negative active material.

[0074] As an example, the negative active material can be filled and / or deposited in the negative current collector.

[0075] In some embodiments, the material of the positive current collector can be aluminum, and the material of the negative current collector can be copper.

[0076] In some embodiments, the separator is a separator film. The present application does not have a particular limitation on the type of separator film, and any known porous structure separator film having good chemical stability and mechanical stability can be used.

[0077] As an example, the main material of the separator film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride. The separator film can be a single layer film or a multi-layer composite film, and is not particularly limited. When the separator film is a multi-layer composite film, the materials of the respective layers can be the same or different, and are not particularly limited. The separator can be a separate member located between the positive and negative electrodes, or can be attached to the surface of the positive and negative electrodes. An inorganic particle coating layer, an organic particle coating layer, or an organic / inorganic composite coating layer can be applied to the surface of the separator film.

[0078] In some embodiments, the battery cell 22 further includes an electrolyte contained within the housing of the battery cell 22. The electrolyte functions to conduct active ions between the positive and negative electrodes. The type of electrolyte is not particularly limited in the present application and can be selected as desired. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0079] In the liquid electrolyte, the electrolyte salt and the solvent are included.

[0080] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bisfluorosulfonylimide, lithium bis-trifluoromethanesulfonylimide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluoroboric oxalate, lithium bisoxalate borate, lithium difluorodioxalate phosphate, and lithium tetrafluorodioxalate phosphate.

[0081] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, butyl sulfone, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent can also be an ether-based solvent. The ether-based solvent can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyl tetrahydrofuran, diphenyl ether, and crown ether.

[0082] In some embodiments, the electrolyte solution can further include an additive. For example, the additive can include a negative electrode film-forming additive, a positive electrode film-forming additive, or an additive capable of improving certain properties of the battery cell 22, such as an additive capable of improving overcharge / fast charge properties of the battery cell 22, an additive capable of improving high-temperature properties of the battery cell 22, an additive capable of improving low-temperature properties of the battery cell 22, etc.

[0083] In the gel electrolyte, a polymer is included as a backbone network, and can be used in combination with an ionic liquid-lithium salt.

[0084] The solid-state electrolyte includes a polymer solid-state electrolyte, an inorganic solid-state electrolyte, and a composite solid-state electrolyte.

[0085] As an example, the polymer of the polymer solid-state electrolyte can include polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single-ion polymer, a polyionic liquid, cellulose, or the like.

[0086] As an example, the inorganic solid-state electrolyte can be one or more of an oxide solid-state electrolyte (crystalline perovskite, sodium superionic conductor, garnet, amorphous LiPON film), a sulfide solid-state electrolyte (crystalline lithium superionic conductor (lithium germanium phosphorus sulfide, argyrodite), amorphous sulfide), a halide solid-state electrolyte, a nitride solid-state electrolyte, and a hydride solid-state electrolyte.

[0087] As an example, the composite solid-state electrolyte is formed by adding an inorganic solid-state electrolyte filler to a polymer solid-state electrolyte.

[0088] The electrode assembly can be in a wound structure, a stacked structure, or a hybrid structure of the wound and stacked structures.

[0089] In some embodiments, the electrode assembly is in a wound structure. The positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0090] In some embodiments, the electrode assembly is in a stacked structure.

[0091] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be alternately stacked.

[0092] As an example, a plurality of positive electrode sheets can be provided, and the negative electrode sheet is folded to form a plurality of folded segments that are stacked.

[0093] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded segments that are stacked.

[0094] As an example, a plurality of separators can be provided and disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0095] As an example, the separators can be continuously provided and disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0096] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape.

[0097] In some embodiments, the electrode assembly is provided with tabs. The tabs can guide current out of the electrode assembly. The tabs include positive tabs and negative tabs.

[0098] In some embodiments, the battery cell 22 can include a housing. The housing can be a steel housing, an aluminum housing, a plastic housing (e.g., polypropylene), a composite metal housing (e.g., copper-aluminum composite housing), or an aluminum-plastic film, etc. In some embodiments, the housing can be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly, which is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag can be a bag-shaped insulating member or an aluminum-plastic film. When the housing is a sealed structure, it is used to encapsulate the electrode assembly, the electrolyte, and other components.

[0099] As an example, the battery cell 22 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shapes of battery cells, including a square battery cell, a blade battery cell, a multi-prismatic battery cell (e.g., a hexagonal battery cell), etc., without specific limitation in the present application.

[0100] In some embodiments, the housing includes an end cap and a shell, and the shell is provided with an opening, and the end cap is arranged on the opening. The shell can be provided with one or more openings. The end cap can also be provided with one or more openings.

[0101] In some embodiments, at least one electrode terminal is arranged on the housing, and the electrode terminal is electrically connected with the tab. The electrode terminal can be directly connected with the tab or indirectly connected with the tab through a current collecting member. The electrode terminal can be arranged on the end cap or the shell.

[0102] In some embodiments, a pressure relief mechanism is arranged on the housing. The pressure relief mechanism is used to discharge the internal gas of the battery cell 22.

[0103] As an example, the pressure relief mechanism is actuated to release the internal pressure or temperature of the battery cell 22 when the internal pressure or temperature of the battery cell 22 reaches a predetermined threshold. When the internal pressure or temperature of the battery cell 22 reaches the predetermined threshold, the pressure relief mechanism performs an action or a weak structure arranged in the pressure relief mechanism is broken, thereby forming an opening or a passage for the internal pressure or temperature to be released. The threshold value is designed differently according to different design requirements. The threshold value can depend on the material of one or more of the positive plate, the negative plate, the electrolyte, and the separator in the battery cell 22.

[0104] In some embodiments, please refer to Figure 3 and Figure 4 The battery cell assembly 2 is generally formed by arranging a plurality of battery cells 22.

[0105] Please refer to Figure 3 and Figure 4The battery apparatus 100 mentioned in the embodiments of the present application can include one or more battery cell assemblies 2 for providing voltage and capacity.

[0106] As an example, the battery cell assembly 2 can be a battery module formed by arranging and fixing a plurality of battery cells 22 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 22 by a cable tie.

[0107] The embodiments of the present application provide a power consuming device including the battery apparatus 100 in any of the embodiments of the present application, and the battery apparatus 100 is used for storing or providing electric energy.

[0108] The power consuming device includes but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a vehicle, a ship or a spacecraft, etc. The vehicle can include an electric vehicle and an electric car, the electric toy can include an electric vehicle and an electric car, etc. The electric toy can be a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0109] The embodiments of the present application provide an energy storage device including the battery apparatus 100 in any of the embodiments of the present application, and the battery apparatus 100 is used for storing or providing electric energy.

[0110] The energy storage device includes but is not limited to an energy storage container or an energy storage cabinet, etc.

[0111] In the following embodiments, for the convenience of description, the power consuming device in an embodiment of the present application is taken as a vehicle 1000 for example. The following is described in conjunction with the drawings.

[0112] Figure 1 The structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. As shown in the figure, Figure 1 The vehicle 1000 is provided with the battery apparatus 100 inside, and the battery apparatus 100 can be arranged at the bottom of the vehicle 1000 or at the front or rear of the vehicle 1000. The battery apparatus 100 can be used for power supply of the vehicle 1000, for example, the battery apparatus 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery apparatus 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0113] In some embodiments of the present application, the battery device 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing the fuel or natural gas to provide driving power for the vehicle 1000.

[0114] In the related art, in order to limit the overflow of glue during the assembly of the battery monomer assembly into the box, a closed-loop frame is arranged on the upper surface of the bottom plate, the frame is made of metal profiles, the frame surrounds the outer periphery of the support beam of the battery box, the glue is coated on the upper surface of the bottom plate and located in the space surrounded by the frame, and during the assembly of the battery monomer assembly into the box, the frame blocks the glue to prevent the glue from overflowing to the outside of the frame. After the glue solidifies into a solid state, the battery monomer assembly and the support beam are fixed. However, the additional closed-loop frame has problems of high cost and complex manufacturing process.

[0115] Therefore, the embodiments of the present application provide a battery device, which comprises a battery box, a battery monomer assembly, a support beam and a glue blocking member. The battery box comprises a bottom plate and a box cover, the bottom plate is used for carrying the battery monomer assembly, the box cover is connected with the bottom plate to define a containing space, and the battery monomer assembly is located in the containing space; and an adhesive layer connects the battery monomer assembly and the bottom plate. The support beam is arranged in the containing space, the support beam is arranged on the bottom plate, and the support beam is located on the side of the battery monomer assembly. The glue blocking member comprises a glue blocking wall and a bottom wall, the glue blocking wall is connected with the bottom wall, the support beam, the glue blocking wall and the bottom plate jointly surround a placing groove, the battery monomer assembly is arranged in the placing groove, and the bottom wall is bonded with the battery monomer assembly through the adhesive layer.

[0116] The battery device provided by the embodiments of the present application can not only improve the connection stability of the glue blocking member, but also strengthen the glue blocking reliability of the glue blocking member. During the assembly of the battery monomer assembly into the placing groove, the liquid adhesive layer is extruded by the battery monomer assembly and the bottom plate and flows around the battery monomer assembly, and the support beam and the glue blocking wall surround the outer periphery of the battery monomer assembly. The support beam and the glue blocking wall can jointly block the liquid adhesive layer, to a certain extent, to prevent the liquid adhesive layer from flowing to the outside of the placing groove. In this way, the glue blocking member is added and the support beam is reused to block the liquid adhesive layer, and the bottom plate can no longer be provided with a closed-loop frame for blocking glue, so that the cost and the manufacturing process difficulty can be reduced.

[0117] The battery device 100 provided by the embodiments of the present application will be further described below with reference to the accompanying drawings. Please refer to Figures 2 to 10The battery device 100 comprises a battery box 1, a battery cell assembly 2, a support beam 12 and a glue blocking member 13. The battery box 1 comprises a bottom plate 11 and a cover 15, the bottom plate 11 is used to support the battery cell assembly 2, the cover 15 is connected with the bottom plate 11 to define a containing space, and the battery cell assembly 2 is located in the containing space. An adhesive layer 14 connects the battery cell assembly 2 and the bottom plate 11. The support beam 12 is arranged in the containing space, the support beam 12 is arranged on the bottom plate 11 and located at the circumferential side of the battery cell assembly 2. The glue blocking member 13 comprises a glue blocking wall 131 and a bottom wall 132, the glue blocking wall 131 is connected with the bottom wall 132, the support beam 12, the glue blocking wall 131 and the bottom plate 11 jointly form a placing groove 1a, the battery cell assembly 2 is arranged in the placing groove 1a, and the bottom wall 132 is adhered to the battery cell assembly 2 through the adhesive layer 14.

[0118] For example, refer to Figures 2 to 10 The support beam 12 is arranged on the surface of the bottom plate 11 facing the first side X1 in the first direction X, the bottom wall 132 is connected with the surface of the bottom plate 11 facing the first side X1, the glue blocking wall 131 is connected with the first side X1 of the bottom wall 132, and the placing groove 1a is open to the first side X1.

[0119] The bottom plate 11 is substantially in a flat plate structure, and the bottom plate 11 can be used to support and fix the battery cell assembly 2. The flat plate structure means that the two surfaces of the bottom plate 11 facing the first direction X are both substantially planar, and the first direction X is consistent with the thickness direction of the bottom plate 11.

[0120] The glue blocking wall 131 is connected with the first side X1 of the bottom wall 132, that is, the glue blocking wall 131 and the support beam 12 are both located on the first side X1 of the bottom plate 11, and the support beam 12 and the glue blocking wall 131 can form a closed loop structure, and the surface of the support beam 12 facing the placing groove 1a and the surface of the glue blocking wall 131 facing the placing groove 1a jointly form a circumferential wall surface of the placing groove 1a around the first direction X.

[0121] It can be understood that, during the process of assembling the battery cell assembly 2 into the placing groove 1a, the adhesive layer 14 is in a liquid state; after the assembly is completed, the adhesive layer 14 solidifies into a solid state.

[0122] In the process of assembling the battery cell assembly 2 into the placing groove 1a, the battery cell assembly 2 can enter the placing groove 1a from top to bottom as a whole, that is, in the process of assembly, the first side X1 of the first direction X is the top, the second side of the first direction X is the bottom, the opening of the placing groove 1a faces upward, the battery cell assembly 2 enters the placing groove 1a and extrudes the adhesive layer 14 downward, the adhesive layer 14 is in a liquid state in the process of assembly, the liquid adhesive layer 14 is extruded by the battery cell assembly 2 and the bottom plate 11 together and flows to the periphery of the battery cell assembly 2, and the closed loop structure formed by the support beam 12 and the glue blocking wall 131 surrounds the outer periphery of the battery cell assembly 2, so that the support beam 12 and the glue blocking wall 131 can jointly block the liquid adhesive layer 14, to a certain extent, to prevent the liquid adhesive layer 14 from flowing to the outside of the placing groove 1a, until the liquid adhesive layer 14 solidifies into a solid state, and the assembly of the battery cell assembly 2 into the box is completed.

[0123] The box cover 15 is connected with the bottom plate 11 to define a containing space, that is, the box cover 15 closes the opening of the placing groove 1a toward the first side X1, to improve the waterproof and dustproof performance of the battery box 1.

[0124] The battery device 100 provided by the embodiment of the present application can not only improve the connection stability of the glue blocking member 13, but also strengthen the glue blocking reliability of the glue blocking member 13 by bonding the bottom wall 132 to the battery cell assembly 2 through the adhesive layer 14. In the process of assembling the battery cell assembly 2 into the placing groove 1a, the liquid adhesive layer 14 is extruded by the battery cell assembly 2 and the bottom plate 11 together and flows to the periphery of the battery cell assembly 2, and the support beam 12 and the glue blocking wall 131 surround the outer periphery of the battery cell assembly 2, so that the support beam 12 and the glue blocking wall 131 can jointly block the liquid adhesive layer 14, to a certain extent, to prevent the liquid adhesive layer 14 from flowing to the outside of the placing groove 1a. In this way, the glue blocking member 13 is added and the support beam 12 is reused to block the liquid adhesive layer 14, and the bottom plate 11 can no longer be provided with a closed loop frame for blocking glue, so that the cost and manufacturing process difficulty can be reduced.

[0125] In some embodiments, the battery box 1 includes a sealing member, the surface of the bottom plate 11 toward the first side X1 has a closed loop sealing surface, the sealing surface surrounds the outer periphery of the glue blocking member 13 and the support beam 12, the sealing member is arranged on the sealing surface, and the box cover 15 presses the sealing member against the bottom plate 11. In other words, the box cover 15 and the bottom plate 11 jointly clamp the sealing member, and the sealing is achieved through the elastic deformation of the sealing member.

[0126] In this embodiment, the sealing surface surrounds the outer periphery of the glue blocking member 13 and the support beam 12, that is, the sealing surface is located outside the placing groove 1a. Since the glue blocking member 13 and the support beam 12 can block the adhesive of the adhesive layer 14 from overflowing, to a certain extent, the sealing surface can be prevented from being polluted by the adhesive, and the adhesive can be prevented from affecting the sealing reliability between the box cover 15 and the bottom plate 11.

[0127] The connection between the box cover 15 and the bottom plate 11 can include at least one of welding, screw connection, bolt connection, and the like.

[0128] The specific material of the adhesive layer 14 is not limited, and the adhesive layer 14 can adopt a heat-conducting structural adhesive or other adhesive that can achieve adhesion.

[0129] In some embodiments, referring to Figures 8 to 14 , the surface of the bottom wall 132 away from the glue blocking wall 131 is adhered to the bottom plate 11. That is, the bottom wall 132 is fixed on the bottom plate 11.

[0130] In this embodiment, the glue blocking member 13 can be fixed to the bottom plate 11, and the glue blocking member 13 has low assembly difficulty and is easy to operate, thereby reducing the risk of force movement of the glue blocking member 13.

[0131] For example, the surface of the bottom wall 132 and the bottom plate 11 towards the first side X1 can be adhered by double-sided tape or glue-like substances. In this way, the adhesive layer 14 is difficult to enter between the bottom wall 132 and the bottom plate 11. For example, the surface of the bottom wall 132 and the bottom plate 11 towards the first side X1 can be sealingly connected.

[0132] It can be understood that the size of the glue blocking wall 131 along the first direction X and the size of the support beam 12 along the first direction X can be set according to requirements, for example, the size of the glue blocking wall 131 along the first direction X and the size of the support beam 12 along the first direction X can be designed according to the amount of adhesive layer 14 used.

[0133] In some embodiments, referring to Figure 7 and Figure 10 , the glue blocking wall 131 is spaced apart from the side surface of the battery monomer assembly 2 to form a glue containing space 100a. The glue containing space 100a is part of the space of the placement groove 1a, and the glue containing space 100a is used to contain the glue overflowed by the adhesive layer 14.

[0134] The side surface of the battery monomer assembly 2 refers to the surface of the battery monomer assembly 2 towards the glue blocking wall 131.

[0135] In this embodiment, the glue blocking wall 131 is spaced apart from the side surface of the battery monomer assembly 2 to form a glue containing space 100a, and during the assembly of the battery monomer assembly 2 to the placement groove 1a, the glue overflowed by the adhesive layer 14 can enter the glue containing space 100a, thereby reducing the extrusion force of the glue on the glue blocking wall 131.

[0136] In some embodiments, referring to Figure 3 and Figure 4The battery cell assembly 2 is connected with the support beam 12. The battery cell assembly 2 is fixed to the support beam 12, so that the bottom plate 11 and the support beam 12 both provide a fixing effect on the battery cell assembly 2, avoiding displacement of the battery cell assembly 2 caused by impact or other forces.

[0137] In some embodiments, referring to Figures 3 to 5 The battery cell assembly 2 includes two end plates 21 and a plurality of battery cells 22, and the plurality of battery cells 22 are clamped between the two end plates 21. The end plates 21 are connected with the support beam 12. In this way, the plurality of battery cells 22 are clamped by the two end plates 21.

[0138] The plurality of battery cells 22 can be arranged into a unit along the second direction Y, and the two end plates 21 are located at both ends of the unit along the second direction Y. The battery cell assembly 2 can be bundled into a module by a binding belt, a tie belt or other plate binding members.

[0139] As an example, the end plate 21 and the support beam 12 can be connected by screws or bolts.

[0140] In some embodiments, the glue blocking member 13 is a flexible structure. In this way, the glue blocking member 13 can elastically deform under the extrusion force of the glue overflowed from the adhesive layer 14, not only can increase the space to accommodate the glue by elastic deformation, but also can avoid the glue flowing to other positions caused by excessive reaction force.

[0141] The flexible structure refers to a structure that can elastically deform under the extrusion force of the glue overflowed from the adhesive layer 14.

[0142] The glue blocking member 13 can be made of a flexible material. The flexible material refers to a material that can elastically deform and / or bend, and can recover the deformation. As an example, the glue blocking member 13 can be made of a non-metallic insulating material, for example, the glue blocking member 13 can be made of silicone and / or rubber.

[0143] In some embodiments, the glue blocking member 13 is an insulating structure. The insulating structure refers to a structure that is electrically insulated. In this way, the reliability and safety of the battery device 100 can be improved.

[0144] The glue blocking member 13 can be made of an insulating material. The insulating material refers to a material that cannot conduct electricity. As an example, the glue blocking member 13 can be made of a non-metallic insulating material.

[0145] In some embodiments, referring to Figure 3 , Figure 4 , Figure 5 and Figure 10The battery monomer assembly 2 is arranged on the first side X1 of the bottom plate 11 along the first direction X, the battery monomer assembly 2 comprises a monomer unit 20, the monomer unit 20 comprises at least two battery monomers 22 stacked along a second direction Y, the second direction Y is perpendicular to the surface with the largest area in the battery monomer 22, two support beams 12 are arranged on both sides of the monomer unit 20 along the second direction Y, and two glue blocking pieces 13 are arranged at intervals along a third direction Z. Each glue blocking piece 13 is connected to the two support beams 12 at both ends along the second direction Y, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0146] For example, please refer to Figure 3 、 Figure 4 and Figure 10 The projection of the bottom plate 11 on the projection plane perpendicular to the first direction X is approximately rectangular, the two support beams 12 can be arranged at intervals along the length direction of the bottom plate 11, and the two glue blocking pieces 13 can be arranged at intervals along the width direction of the bottom plate 11. That is, the second direction Y can be consistent with the length direction of the bottom plate 11, and the third direction Z can be consistent with the width direction of the bottom plate 11. It can be understood that in other examples, the two support beams 12 can be arranged at intervals along the width direction of the bottom plate 11, and the two glue blocking pieces 13 can be arranged at intervals along the length direction of the bottom plate 11, that is, the third direction Z can be consistent with the length direction of the bottom plate 11, and the second direction Y can be consistent with the width direction of the bottom plate 11.

[0147] In some embodiments, please refer to Figure 5 The at least two monomer units 20 are arranged along the third direction Z.

[0148] In this embodiment, the two support beams 12 and the two glue blocking pieces 13 are sequentially connected to form a closed loop structure. The two support beams 12 can resist the expansion force of the battery monomer 22, not only can provide stable support for the battery monomer assembly 2 to avoid displacement caused by unstable fixation of the battery monomer assembly 2, but also can provide a fixed position for the two glue blocking pieces 13, so that both ends of the two glue blocking pieces 13 along the second direction Y can be effectively fixed to avoid displacement of the glue blocking piece 13.

[0149] The support beam 12 can be made of a metal material, for example, the support beam 12 can be a metal profile.

[0150] In some embodiments, please refer to Figure 7, the battery cell assembly 2 is arranged on the first side X1 of the bottom plate 11 along the first direction X, and the projection of the battery cell assembly 2, the projection of the adhesive layer 14, and the projection of the bottom wall 132 partially overlap in a projection plane perpendicular to the first direction X. That is, part of the adhesive layer 14 is clamped between the battery cell assembly 2 and the bottom wall 132, and during assembly of the battery cell assembly 2 into the placement groove 1a, the force applied by the battery cell assembly 2 can be transmitted to the bottom wall 132, and the bottom wall 132 can be pressed against the bottom plate 11, further reducing the risk of displacement of the glue blocking piece 13 during assembly.

[0151] In some embodiments, referring to Figures 3 to 14 , the battery cell assembly 2 is arranged on the first side X1 of the bottom plate 11 along the first direction X, and the glue blocking piece 13 includes a connecting wall 133 connected to one end of the glue blocking wall 131 along the second direction Y, and the connecting wall 133 is bent towards the side where the battery cell assembly 2 is located, and the connecting wall 133 is connected to the support beam 12, and the first direction X is perpendicular to the second direction Y. As an example, the support beam 12 can be located at the end 1311 of the glue blocking wall 131 along the second direction Y.

[0152] In this embodiment, the connecting wall 133 is connected to the support beam 12, and the end 1311 of the glue blocking wall 131 along the second direction Y is fixed, reducing the risk of deformation and displacement of the glue blocking piece 13 due to extrusion of the overflowing glue, and further improving the connection stability of the glue blocking piece 13.

[0153] In some embodiments, referring to Figures 8 to 14 , the connecting wall 133 is arranged on the surface of the support beam 12 away from the battery cell assembly 2 along the second direction Y. In this way, in the second direction Y, the support beam 12 is located on the side of the connecting wall 133 close to the battery cell assembly 2, which not only facilitates the connection of the battery cell assembly 2 and the support beam 12, but also avoids friction with the connecting wall 133 during assembly of the battery cell assembly 2.

[0154] In other embodiments, the connecting wall 133 is arranged on the surface of the support beam 12 close to the battery cell assembly 2 along the second direction Y.

[0155] In some embodiments, referring to Figures 8 to 14 , the support beams 12 are arranged at intervals along the second direction Y, and the glue blocking piece 13 includes two connecting walls 133 connected to the two ends of the glue blocking wall 131 along the second direction Y, respectively, and the two connecting walls 133 are connected to the two support beams 12, respectively.

[0156] In some embodiments, referring to Figures 8 to 14 , the connecting wall 133 is bonded to the support beam 12 and / or connected by a fastener 3. That is, the connecting wall 133 is fixed to the support beam 12 by at least one of bonding and fastener 3.

[0157] For example, the connecting wall 133 can be bonded with the support beam 12 only. For another example, the connecting wall 133 can be connected with the support beam 12 by the fastener 3 only. For yet another example, the connecting wall 133 can be bonded with the support beam 12 and connected with the support beam 12 by the fastener 3.

[0158] In this embodiment, the connecting wall 133 is bonded with the support beam 12 and / or connected with the support beam 12 by the fastener 3, and the connecting manner is simple and convenient to operate.

[0159] For example, referring to Figures 8 to 11 , the connecting wall 133 can be bonded with the support beam 12 by double-sided tape or gluey substance.

[0160] The fastener 3 includes, but is not limited to, rivet, screw, bolt, etc.

[0161] For example, referring to Figures 12 to 14 , the connecting wall 133 can be formed with a through hole 133a, and the fastener 3, such as rivet, can be arranged in the through hole 133a and connected with the support beam 12.

[0162] The material of the fastener 3 is not limited, and for example, the material of the fastener 3 includes, but is not limited to, metal or plastic, etc.

[0163] In some embodiments, referring to Figures 8 to 14 , the battery cell assembly 2 is arranged on the first side X1 of the bottom plate 11 along the first direction X, the glue blocking wall 131 includes an end portion 1311 and a main body portion 1312, the end portion 1311 is connected with the main body portion 1312 and the connecting wall 133, and the end portion 1311 is connected with the end surface of the support beam 12 along the third direction Z, and the first direction X and the third direction Z are perpendicular to each other. That is, the end portion 1311 is connected with one end of the main body portion 1312 along the second direction Y.

[0164] In this embodiment, the end portion 1311 is connected with the end surface of the support beam 12 along the third direction Z, so that not only the connection stability of the glue blocking wall 131 can be improved, but also the probability of glue being hidden in the gap between the end portion 1311 and the support beam 12 can be reduced to a certain extent.

[0165] In some embodiments, referring to Figures 8 to 14 , the support beams 12 are arranged at intervals along the second direction Y, the glue blocking wall 131 includes two end portions 1311, the two end portions 1311 are respectively connected with two ends of the main body portion 1312 along the second direction Y, and the two end portions 1311 are respectively connected with the end surfaces of the two support beams 12 along the third direction Z.

[0166] In some embodiments, the end portion 1311 is bonded to the end surface of the support beam 12 facing the third direction Z. For example, the end portion 1311 is bonded to the end surface of the support beam 12 facing the third direction Z by double-sided adhesive tape or a glue-like substance. In this way, the opposite surfaces of the end portion 1311 and the support beam 12 can be sealed and connected, and the glue from the bonding layer 14 can be more effectively blocked from entering between the end portion 1311 and the support beam 12 to some extent.

[0167] In some embodiments, referring to Figures 8 to 14 , the main body portion 1312 protrudes from the end portion 1311 towards the first side X1. The main body portion 1312 is mainly used to block the glue overflowed from the bonding layer 14. The main body portion 1312 protrudes from the end portion 1311 towards the first side X1, and the size of the main body portion 1312 along the first direction X is greater than the size of the end portion 1311 along the first direction X. The glue overflowed from the bonding layer 14 needs to climb a higher height to spread to the outside of the placement slot 1a beyond the main body portion 1312, so that the glue blocking effect can be improved.

[0168] For example, the surface of the end portion 1311 facing the first side X1 is flush with the surface of the support beam 12 facing the first side X1. That is, in the first direction X, the height of the end portion 1311 and the support beam 12 is basically the same, and the main body portion 1312 protrudes from the support beam 12 towards the first side X1.

[0169] In some embodiments, referring to Figure 15 , the end of the glue blocking wall 131 away from the bottom wall 132 is connected to the battery monomer assembly 2.

[0170] In the process of assembling the battery monomer assembly 2 into the placement slot 1a, the glue blocking piece 13 can be connected to the bottom plate 11 and the support beam 12 first, and then the battery monomer assembly 2 can be placed into the placement slot 1a as a whole from top to bottom. During the assembly process, the bonding layer 14 is in a liquid state, and the liquid bonding layer 14 is extruded by the battery monomer assembly 2 and the bottom plate 11 and flows around the battery monomer assembly 2. The support beam 12 and the glue blocking wall 131 can jointly block the liquid bonding layer 14. After the battery monomer assembly 2 is placed into the placement slot 1a, the end of the glue blocking wall 131 away from the bottom wall 132 can be connected to the battery monomer assembly 2.

[0171] In this embodiment, the end of the glue blocking wall 131 away from the bottom wall 132 is connected to the battery monomer assembly 2, which can further improve the connection stability of the glue blocking piece 13 and avoid the case cover 15 pressing the glue blocking wall 131 during the assembly process of the case cover 15 and the bottom plate 11. In some embodiments, referring to Figure 11 and Figure 15The main body 1312 includes a glue accommodating portion 13121 and a folded portion 13122. The glue accommodating portion 13121 connects the folded portion 13122 and the bottom wall 132. The glue accommodating portion 13121 is spaced apart from the side surface of the battery monomer assembly 2 to form a glue accommodating space 100a (see Figure 7 ), see Figure 15 , and the folded portion 13122 is bonded to the side surface of the battery monomer assembly 2.

[0172] In this embodiment, during the process of assembling the battery monomer assembly 2 into the placing groove 1a, the glue overflowing from the bonding layer 14 can enter the glue accommodating space 100a, thereby reducing the extrusion force of the glue on the glue blocking wall 131. The folded portion 13122 is bonded to the side surface of the battery monomer assembly 2, which not only further enhances the connection stability of the glue blocking member 13, but also avoids the case cover 15 pressing the glue blocking wall 131 during the process of assembling the case cover 15 and the bottom plate 11.

[0173] In some embodiments, see Figures 10 to 14 , the bottom wall 132 is substantially in a sheet structure extending along the second direction Y.

[0174] In some embodiments, see Figures 10 to 14 , the glue blocking wall 131 is substantially in a sheet structure extending along the second direction Y.

[0175] In some embodiments, see Figures 10 to 14 , the connecting wall 133 is substantially in a sheet structure extending along the third direction Z.

[0176] In some embodiments, the glue blocking member 13 can be an integrally formed structure. The glue blocking member 13 has good structural strength, simple structure, and is easy to manufacture.

[0177] In some embodiments, the inside of the bottom plate 11 can form a channel for circulating a heat exchange fluid. In other words, the bottom plate 11 can be used to exchange heat with the battery monomer 22 to adjust the temperature of the battery monomer 22.

[0178] The heat exchange fluid is a flowable fluid, and the heat exchange fluid includes but is not limited to water.

[0179] In a specific embodiment, see Figures 2 to 14The battery device 100 comprises a battery box 1 and a battery cell assembly 2. The battery box 1 comprises a bottom plate 11, support beams 12 arranged on the bottom plate 11 and located at the circumferential side of the battery cell assembly 2, and a glue blocking member 13 comprising a glue blocking wall 131 and a bottom wall 132, the bottom wall 132 and the support beams 12 are arranged on the same surface of the bottom plate 11, the glue blocking wall 131 is connected to the bottom wall 132, the support beams 12, the glue blocking wall 131 and the bottom plate 11 jointly form a placing groove 1a, at least part of the bottom plate 11 and at least part of the bottom wall 132 are paved with an adhesive layer 14, the battery cell assembly 2 is arranged in the placing groove 1a and is bonded to the adhesive layer 14. Two support beams 12 are arranged at intervals along a second direction Y, two glue blocking members 13 are arranged at intervals along a third direction Z, and each glue blocking member 13 is connected to two support beams 12 at two ends thereof along the second direction Y, the glue blocking member 13 comprises a connecting wall 133 connected to one end of the glue blocking wall 131 along the second direction Y and bent towards the side where the battery cell assembly 2 is located, and the connecting wall 133 is connected to the support beam 12. The battery cell assembly 2 is arranged in the placing groove 1a, is bonded to the adhesive layer 14, and is connected to the support beam 12.

[0180] In this embodiment, the bottom wall 132 is connected to the surface of the bottom plate 11 facing the battery cell assembly 2, the connecting wall 133 is connected to the support beam 12, and the end 1311 of the glue blocking wall 131 along the second direction Y is fixed, so that the glue blocking member 13 can be fixed to the bottom plate 11 and the support beam 12, reducing the risk of displacement of the glue blocking member 13 due to extrusion deformation of the overflowing glue, and further improving the connection stability of the glue blocking member 13. Covering at least part of the bottom wall 132 with the adhesive layer 14 further improves the connection stability of the glue blocking member 13, and reduces the risk of movement of the glue blocking member 13 under stress. During the assembly of the battery cell assembly 2 into the placing groove 1a, the liquid adhesive layer 14 is extruded by the battery cell assembly 2 and the bottom plate 11 and flows around the battery cell assembly 2, while the support beam 12 and the glue blocking wall 131 surround the outer periphery of the battery cell assembly 2, and the support beam 12 and the glue blocking wall 131 can jointly block the liquid adhesive layer 14, to a certain extent, to prevent the liquid adhesive layer 14 from flowing further outside the placing groove 1a. In this way, the glue blocking member 13 is added and the support beam 12 is reused to block the liquid adhesive layer 14, and the bottom plate 11 can no longer be provided with a closed-loop frame for glue blocking, which can reduce the cost and the difficulty of the manufacturing process.

[0181] The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; 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, and in particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any manner.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell assembly; a battery box comprising a bottom plate and a box cover, the bottom plate is used to carry the battery cell assembly, the box cover is connected with the bottom plate to define a containing space, the battery cell assembly is located in the containing space, and an adhesive layer connects the battery cell assembly and the bottom plate; a support beam arranged in the containing space, the support beam is arranged on the bottom plate, and the support beam is located on the periphery of the battery cell assembly; and a glue blocking member, the glue blocking member comprises a glue blocking wall and a bottom wall, the glue blocking wall is connected with the bottom wall, the support beam, the glue blocking wall and the bottom wall jointly form a placing groove, the battery cell assembly is arranged in the placing groove, and the bottom wall is adhered to the battery cell assembly through the adhesive layer. The battery cell assembly is arranged on the first side of the bottom plate along a first direction, a projection plane perpendicular to the first direction is taken as a projection plane, and projections of the battery cell assembly, the adhesive layer and the bottom wall partially overlap.

2. The battery device of claim 1, wherein The battery cell assembly is arranged on the first side of the bottom plate along a first direction, the glue blocking member comprises a connecting wall, the connecting wall is connected to one end of the glue blocking wall along a second direction, and the connecting wall is bent towards the side where the battery cell assembly is located, the connecting wall is connected with the support beam, and the first direction is perpendicular to the second direction.

3. The battery device of claim 1, wherein The connecting wall is adhered to the support beam and / or connected to the support beam through a fastener.

4. The battery device of claim 3, wherein The battery cell assembly is arranged on the first side of the bottom plate along a first direction, the glue blocking wall comprises an end portion and a main body portion, the end portion is connected to the main body portion and the connecting wall, the end portion is connected to the end surface of the support beam along a third direction, and the first direction and the third direction are perpendicular to each other.

5. The battery device of claim 3, wherein The main body portion protrudes from the end portion towards the first side.

6. The battery device of claim 5, wherein The glue blocking wall is spaced apart from the side surface of the battery cell assembly to form a glue containing space.

7. The battery device of claim 1, wherein The end of the glue blocking wall away from the bottom wall is connected to the battery cell assembly.

8. The battery device of claim 1, wherein The surface of the bottom wall away from the glue blocking wall is adhered to the bottom plate.

9. The battery device of claim 1, wherein, The battery cell assembly is connected to the support beam; and / or 10. The battery device of claim 1, wherein The glue blocking member is a flexible structure; and / or The glue blocking member is an insulating structure. The battery cell assembly is arranged on the first side of the bottom plate along a first direction, the battery cell assembly comprises a cell unit, the cell unit comprises at least two battery cells stacked along a second direction, the second direction is perpendicular to the largest surface of the battery cell, two support beams are arranged on both sides of the cell unit along the second direction, and two glue blocking members are arranged at intervals along a third direction, the two ends of each glue blocking member along the second direction are connected to two support beams respectively, and the first direction, the second direction and the third direction are perpendicular to each other.

11. The battery device according to any one of claims 1 to 10, wherein The battery device comprises the battery device according to any one of claims 1 to 11, and is used for storing or providing electric energy.

12. An electrical device, characterized by The battery device comprises the battery device according to any one of claims 1 to 11, and is used for storing or providing electric energy.

13. An energy storage device, characterized by, ​

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