WO2022134055A1 - 电池的箱体、电池、用电装置、制备箱体的方法和装置 - Google Patents

电池的箱体、电池、用电装置、制备箱体的方法和装置 Download PDF

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Publication number
WO2022134055A1
WO2022134055A1 PCT/CN2020/139570 CN2020139570W WO2022134055A1 WO 2022134055 A1 WO2022134055 A1 WO 2022134055A1 CN 2020139570 W CN2020139570 W CN 2020139570W WO 2022134055 A1 WO2022134055 A1 WO 2022134055A1
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WIPO (PCT)
Prior art keywords
wall
reinforcement structure
cavity
box body
battery
Prior art date
Application number
PCT/CN2020/139570
Other languages
English (en)
French (fr)
Inventor
姚鹏程
王鹏
陈兴地
王勇
吴友鑫
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP20937172.3A priority Critical patent/EP4044329B1/en
Priority to CN202080080589.4A priority patent/CN114982046A/zh
Priority to PCT/CN2020/139570 priority patent/WO2022134055A1/zh
Priority to US17/564,863 priority patent/US20220209346A1/en
Publication of WO2022134055A1 publication Critical patent/WO2022134055A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • the present application relates to the technical field of batteries, and in particular, to a battery case, a battery, an electrical device, and a method and device for preparing the case.
  • the box of the battery pack is the carrier of all components, and its structural strength and sealing performance are particularly important.
  • the bottom plate, beam and wall of the box body are manufactured by lap welding.
  • stress concentration is easy to form at the weld between the wall and the beam of the box, and the strength of the weld is low, and there is a risk of failure, which cannot meet the strength requirements of the box.
  • the present application provides a battery case, a battery, electrical equipment, and a method and device for preparing the case, which can improve the strength of the case.
  • a battery case comprising: a plurality of walls for forming an accommodating space of the case, the plurality of walls including a first wall; and a first beam disposed in the accommodating space inside, and the first beam intersects the first wall, the inside of the first beam has a first cavity; a first reinforcement structure, at least part of the first reinforcement structure is accommodated in the first cavity Inside, the first reinforcement structure is respectively fixed with the first beam and the first wall through a first connecting piece and a second connecting piece, so that the first wall is connected and fixed with the first beam.
  • the first beam includes two outer side walls and a first connecting wall connecting the two outer side walls, the two outer side walls and the first connecting wall forming a plurality of the first connecting walls cavity.
  • the interior of the first beam in the embodiment of the present application may include one or more first cavities, and when multiple first cavities are included, the shapes and sizes of the multiple first cavities may be Set according to practical applications, for example, the sizes of the plurality of first cavities may be different; for another example, the shapes of the plurality of first cavities may be the same, so as to facilitate processing.
  • the first reinforcement structure includes a plurality of reinforcement blocks, and each reinforcement block of the plurality of reinforcement blocks is accommodated in a corresponding one of the plurality of first cavities.
  • One or more reinforcement blocks may be accommodated in a first cavity in the embodiment of the present application. If only one reinforcement block is accommodated in a cavity, the size and shape of the accommodated reinforcement block shall be consistent with the corresponding first cavity , for easy processing and installation.
  • the first connector includes a plurality of fasteners arranged along a first direction, the first direction being a length direction of the first beam.
  • the first reinforcement structure includes a plurality of reinforcement blocks
  • the first connection member includes a fastener
  • the fastener includes a connection portion and a head
  • the connection portion of the fastener is along the A second direction penetrates at least one of the plurality of reinforcing blocks, and the second direction is a height direction of the first beam.
  • the length of each fastener in the second direction is generally set to account for more than half of the height of the first reinforcement structure in the second direction .
  • the outer top wall of the first beam is provided with a recess, and the head of the fastener is located in the recess, so that the head of the fastener is in the first beam The height direction does not exceed the maximum height of the first beam.
  • the height of the head of the fastener does not exceed the maximum height of the first beam, which may not affect the installation of various components in the box.
  • the box body includes a main body and a cover
  • the main body is a hollow cuboid with one end open
  • the cover is plate-shaped to cover the opening of the main body
  • the head of the fastener is arranged on the In the concave portion, if the maximum height of the first beam is not exceeded, the installation of the cover portion will not be affected, and the cover portion can be sealed with the main body portion.
  • the box body further includes a second reinforcement structure
  • the second reinforcement structure includes a connected first part and a second part
  • the first part is fixed to the first wall facing the first The surface of the beam
  • the second part is fixed to the outer top wall of the first beam
  • the fastener penetrates the second part.
  • the second reinforcement structure is in close contact with the first beam and the first wall at the same time, so as to prevent the first beam from lifting upwards in the height direction as much as possible.
  • the head of the fastener is arranged on the second reinforcement structure, which can effectively avoid the problem of stress concentration between the fastener and the first beam, and improve the stability.
  • the first connecting member includes an intumescent glue
  • the intumescent glue is located between the first reinforcement structure and the first beam to connect the first reinforcement structure and the first beam .
  • expansion glue can be added between at least one side wall of the first beam and the first reinforcement structure, so that the first reinforcement structure and the expansion glue can fill the gap between the two side walls of the first beam .
  • the first wall includes an inner sub-wall, an outer sub-wall, and a second connecting wall for connecting the inner sub-wall and the outer sub-wall
  • the inner sub-wall is an inner wall of the box
  • the outer sub-wall is the outer wall of the box body, and the inner sub-wall, the outer sub-wall and the second connecting wall form a second cavity of the first wall.
  • the interior of the first wall may have one or more second cavities. If there are multiple second cavities, the shapes and sizes of the multiple second cavities can be set according to practical applications. The sizes of the second cavities may be different; for another example, the shapes of the plurality of second cavities may be the same, so as to facilitate processing.
  • the first reinforcement structure includes a fixing portion and an inserting portion, the inserting portion is accommodated in the first cavity, the fixing portion is located outside the first cavity, and the fixing portion The first reinforcing structure is fixed to the first wall by the second connecting piece being fixed to the first wall.
  • the fixing part can be in the shape of a thin plate, and the fixing part can be fixed to the inner sub-wall of the first wall through a second connecting piece.
  • the second connecting piece can be a fastener such as a bolt, a screw or a rivet.
  • the fixing portion is accommodated in the second cavity.
  • the inner sub-wall is provided with a first opening for accommodating the fixing portion in the second cavity.
  • the fixing part is directly fixed to the inner sub-wall of the first wall, which will still occupy part of the space inside the box, reducing the space utilization rate. Therefore, the fixing part can be accommodated in the first wall by opening the inner sub-wall of the first wall. In the second cavity of the wall, in order to achieve the purpose of not occupying the inner space of the box.
  • the fixing portion can be fixed to the surface of the outer sub-wall facing the inner sub-wall, or the fixing portion can also be fixed to the middle wall between the inner sub-wall and the outer sub-wall, specifically, it can be fixed in the middle
  • the surface of the wall facing the inner sub-wall, the intermediate wall may be parallel to the inner sub-wall or the outer sub-wall.
  • the box body further includes: a third reinforcement structure disposed in the second cavity, and the third reinforcement structure is connected to the first wall, the The first reinforcement structure is fixed.
  • the third reinforcing structure may be fixed to the surface of the inner sub-wall facing the outer sub-wall, or, the third reinforcing structure may also be fixed to the surface of the intermediate wall facing the outer sub-wall.
  • the outer sub-wall is provided with a second opening for mounting the second connector.
  • the second connecting piece, the intermediate wall and the fixing portion can be fixed through the second opening of the outer sub-wall.
  • the third reinforcing structure can also be accommodated in the second cavity of the first wall through the second opening in the outer sub-wall, and the second connecting piece, the third reinforcing structure and the first reinforcing structure can be connected through the second opening. structure is fixed.
  • the first wall further includes a sealing plate sealingly connected to the second opening, so that the outer sub-wall is airtight.
  • the box body includes: a main body part and a cover part, the main body part is a hollow structure with one end open, the cover part is used to cover the opening of the main body part to form a closed chamber,
  • the first wall is any one of the walls of the main body.
  • the box body may also include a cover part and a main body part, the cover part and the main body part are both hollow structures with one end open, and the opening of the cover part is arranged opposite to the opening of the main body part, And the cover part and the main body part are fastened to each other to form a closed chamber.
  • the first wall may be any one of the cover part and the main body part.
  • a battery comprising: a plurality of battery cells; and a battery case according to the first aspect or any one of the embodiments of the first aspect, wherein the plurality of battery cells are accommodated in a inside the box.
  • an electrical device comprising: the battery of the second aspect.
  • a method for preparing a battery case comprising: providing a plurality of walls for forming an accommodation space of the case, the plurality of walls including a first wall;
  • a first beam is provided, the first beam is arranged in the accommodation space, the first beam intersects the first wall, and the inside of the first beam has a first cavity; a first reinforcement structure is provided , at least part of the first reinforcement structure is accommodated in the first cavity, the first reinforcement structure is respectively fixed with the first beam and the first wall through a first connecting piece and a second connecting piece, so as to connect and fix the first wall and the first beam.
  • the first connecting member includes an intumescent glue
  • the method further includes: coating the intumescent glue on at least part of the outer surface of the first reinforcement structure; The part coated with the expansion glue is accommodated in the first cavity, and the accommodated part is heated so that after the expansion glue expands, the first reinforcement structure is connected to the first beam connect.
  • an apparatus for preparing a battery including a module for performing the method of the fourth aspect or any one of the embodiments of the fourth aspect.
  • FIG. 1 is a schematic structural diagram of a vehicle disclosed in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an exploded structure of a battery disclosed in an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a battery disclosed in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a main body of a battery case disclosed in an embodiment of the present application.
  • FIG. 5 is a partial exploded view of a battery box disclosed in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a first reinforcement structure disclosed in an embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional view of a first beam disclosed in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another battery case disclosed in an embodiment of the present application.
  • FIG. 9 is a partial exploded view of another battery box disclosed in an embodiment of the present application.
  • FIG. 10 is a schematic cross-sectional view of a first wall disclosed in an embodiment of the present application.
  • FIG. 11 is a partial schematic diagram of an outer sub-wall of a first wall disclosed in an embodiment of the present application.
  • FIG. 12 is a partial schematic diagram of another battery case disclosed in an embodiment of the present application.
  • FIG. 13 is another partial exploded view of another battery box disclosed in an embodiment of the present application.
  • FIG. 14 is a partial cross-sectional schematic diagram of another battery case disclosed in an embodiment of the present application.
  • 15 is another partial cross-sectional schematic diagram of another battery case disclosed in an embodiment of the present application.
  • 16 is a schematic diagram of a third reinforcement structure disclosed in an embodiment of the present application.
  • 17 is a schematic flowchart of a method for preparing a battery case disclosed in an embodiment of the application.
  • FIG. 18 is a schematic block diagram of an apparatus for preparing a battery case disclosed in an embodiment of the application.
  • the terms “installed”, “connected”, “connected” and “attached” should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two components.
  • installed should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two components.
  • multiple refers to two or more (including two), and similarly, “multiple groups” refers to two or more groups (including two groups), and “multiple sheets” refers to two or more sheets (includes two pieces).
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application.
  • the battery cell may be in the form of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which are not limited in the embodiments of the present application.
  • the battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square-shaped battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.
  • the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
  • the batteries mentioned in this application may include battery modules or battery packs, and the like.
  • Batteries typically include a case for enclosing one or more battery cells. The box can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator.
  • the battery cell mainly relies on the movement of metal ions between the positive and negative plates to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, and the positive electrode active material layer is not coated.
  • the current collector coated with the positive electrode active material layer serves as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate.
  • the negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer, The current collector coated with the negative electrode active material layer was used as the negative electrode tab.
  • the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
  • the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together.
  • the material of the diaphragm can be PP or PE, etc.
  • the electrode assembly may be a wound structure or a laminated structure, and the embodiment of the present application is not limited thereto.
  • the case of the battery in the embodiment of the present application is used for accommodating a plurality of battery cells, bus components, and other components of the battery.
  • a structure for fixing the battery cells may also be provided in the box.
  • the shape of the case may be determined according to the plurality of battery cells accommodated.
  • the box may be square with six walls.
  • the bus components mentioned in this application are used to realize electrical connection between a plurality of battery cells, such as parallel connection or series connection or mixed connection.
  • the bus part can realize electrical connection between the battery cells by connecting the electrode terminals of the battery cells.
  • the bus members may be fixed to the electrode terminals of the battery cells by welding.
  • each component in the battery case described above should not be construed as a limitation on the embodiments of the present application, that is, the battery case in the embodiments of the present application may include the above-mentioned components or may not include the above components.
  • the vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or Extended range cars, etc.
  • the interior of the vehicle 1 may be provided with a motor 40 , a controller 30 and a battery 10 , and the controller 30 is used to control the battery 10 to supply power to the motor 40 .
  • the battery 10 may be provided at the bottom of the vehicle 1 or at the front or rear of the vehicle.
  • the battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as the operating power source of the vehicle 1 , for the circuit system of the vehicle 1 , for example, for the starting, navigation and operation power requirements of the vehicle 1 .
  • the battery 10 can not only be used as the operating power source of the vehicle 1 , but also can be used as the driving power source of the vehicle 1 to provide driving power for the vehicle 1 in place of or partially in place of fuel or natural gas.
  • the battery 10 may include a plurality of battery cells.
  • FIG. 2 is a schematic diagram of an exploded structure of a battery 10 according to an embodiment of the present application, and the battery 10 may include a plurality of battery cells 20 .
  • the number of battery cells 20 can be set to any value.
  • a plurality of battery cells 20 can be connected in series, in parallel or in a mixed manner to achieve larger capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, in order to facilitate installation, the battery cells 20 may be arranged in groups, and each group of battery cells 20 constitutes a battery module.
  • the number of battery cells 20 included in the battery module is not limited, and can be set according to requirements.
  • the battery can include a plurality of battery modules, and these battery modules can be connected in series, parallel or mixed.
  • the battery 10 may also include other structures.
  • the battery 10 may further include a bussing component for realizing electrical connection between the plurality of battery cells 20, such as parallel or series or hybrid.
  • the bus member may realize electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20 .
  • the bus members may be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the plurality of battery cells 20 can be further drawn out through the case through the conductive mechanism.
  • the conducting means may also belong to the bussing member.
  • the battery 10 may further include a case body 11 (or a cover body), the interior of the case body 11 is a hollow structure, and a plurality of battery cells 20 are accommodated in the case body 11 .
  • the box body 11 may include two parts, which are respectively referred to as a cover part 111 and a main body part 112 (or may also be referred to as an upper box body and a lower box body), and the cover part 111 and the main body part 112 are fastened together. Together.
  • the shape of the cover part 111 and the main body part 112 may be determined according to the combined shape of the plurality of battery cells 20 , and at least one of the cover part 111 and the main body part 112 has an opening.
  • only one of the cover part 111 and the main body part 112 included in the box body 11 may be a hollow cuboid with an opening, and the other may be a plate shape to cover the opening.
  • the main body 112 is a hollow cuboid with only one face as an opening
  • the cover 111 is a plate.
  • the cover 111 covers the opening of the main body 112 to form a closed chamber.
  • the box body 11 , the chamber can be used to accommodate a plurality of battery cells 20 .
  • the cover part 111 and the main body part 112 included in the box body 11 in the embodiment of the present application may also have other shapes.
  • the cover part 111 and the main body part 112 may both be hollow rectangular parallelepipeds with only one surface being an open surface.
  • the opening of the cover part 111 and the opening of the main body part 112 are disposed opposite to each other, and the cover part 111 and the main body part 112 are fastened to each other to form a box body 11 with a closed cavity.
  • a plurality of battery cells 20 are connected in parallel or in series or mixed with each other and then placed in the box formed by the cover part 111 and the main body part 112 being fastened together.
  • the following description mainly takes the box body 11 shown in FIG. 2 as an example, but the embodiment of the present application is not limited to this.
  • FIG. 3 shows the installation diagram of the main body 112 and the battery 20 in FIG. 2 .
  • the main body 112 of the box 11 is the carrier of various internal components, its structural strength and sealing performance are particularly important.
  • parts such as the bottom plate and the wall included in the box body 11 are manufactured by lap welding.
  • stress concentration is easily formed at the welds between the walls or between the walls and the beams located inside, and the welds have low strength and risk of failure, which cannot meet the strength requirements of the box 11 .
  • the reinforcement bracket needs to occupy the inner space of the box 11, which leads to a low utilization rate of the inner space of the box 11 and affects the battery Installation of the unit 20.
  • the embodiments of the present application provide a battery case, which can solve the above problems.
  • FIG. 4 shows a schematic diagram of the main body 112 of the box body 11 according to the embodiment of the present application
  • FIG. 5 is an exploded view of the area A in the main body 112 shown in FIG. 4
  • the main body portion 112 in the embodiment of the present application may include a plurality of walls having a certain thickness to form a hollow structure of the main body portion 112 .
  • the main body 112 in FIG. 4 includes four side walls and one bottom wall, forming a hollow cuboid.
  • the first wall 210 included in the main body portion 112 is taken as an example for description below.
  • the first wall 210 may be any wall of the main body portion 112 .
  • the first wall 210 may be is any side wall of the main body portion 112 , but the embodiment of the present application is not limited thereto.
  • At least one beam is also disposed inside the main body portion 112 , and each beam is connected to one or more walls of the main body portion 112 .
  • the number of beams can be determined according to the number of battery cells 20 carried in the main body 112 . If the number of battery cells is large, multiple beams can be provided to ensure the strength of the box 11 . If the number of 20 is less, you can set one or a few beams.
  • the first beam 220 intersecting with the first wall 210 is used as an example for illustration.
  • the first beam 220 may be any one of the at least one beam included in the main body portion 112 .
  • a reinforcing structure may also be provided at the intersection of the first wall 210 and the first beam 220 to fix the first wall 210 and the first beam 220 and increase the first wall 210 and the first beam 220 Strength between beams 220.
  • FIGS. 4 and 5 take the first reinforcement structure 230 provided at the intersection of the first beam 220 and the first wall 210 as an example
  • FIG. 6 shows a schematic diagram of the first reinforcement structure 230 in FIGS. 4 and 5
  • 7 shows a schematic cross-sectional view of the first beam 220 , which is obtained by taking a plane parallel to the first wall 210 to intercept the first beam 220 .
  • the main body portion 112 may have one or more first beams 220
  • the corresponding first beams 220 and the first wall 210 may have multiple intersecting positions, and may be in the multiple intersecting positions
  • the first reinforcement structure 230 is provided at all or part of the positions.
  • FIG. 4 only shows any intersecting position, but the embodiment of the present application is not limited thereto.
  • the first beam 220 has a certain thickness and has a cavity inside, which is referred to as the first cavity 221 here; at least part of the first reinforcement structure 230 is accommodated in the first cavity 221 ,
  • the first reinforcing structure 230 is fixed to the first beam 220 through the first connecting member 241 , and is fixed to the first wall 210 through the second connecting member 242 , so that the first wall 210 and the first beam 220 are connected and fixed.
  • the inner space of the box body 11 can be not occupied. Or in the case of occupying a very small space, the rigidity and strength between the first beam 220 and the first wall 210 are greatly increased, which can solve the problem that when the first beam 220 and the first wall 210 are fixed by welding, due to the welding seam. The problem of easy failure due to expansion force caused by low strength.
  • the first beam 220 may include two outer side walls 223 and 224 , and also includes a first connecting wall 225 connecting the two outer side walls 223 and 224 .
  • the surface of each of the two outer side walls 223 and 224 of the first beam 220 may be flat, or may also be uneven, for example, the outer surface or part of the inner surface of the outer side walls 223 and 224
  • the region may have protrusions or grooves, or other components may also be provided on the outer surface or the inner surface, and the embodiment of the present application is not limited thereto.
  • the two outer side walls 223 and 224 of the first beam 220 may be parallel or approximately parallel to each other, for example, the two opposite inner surfaces of the two outer side walls 223 and 224 may be parallel,
  • the embodiments of the present application are not limited thereto.
  • the description is mainly made by taking the two outer side walls 223 and 224 of the first beam 220 as two parallel walls as an example.
  • the first beam 220 further includes a first connecting wall 225 connecting the two outer side walls 223 and 224 , wherein the first connecting wall 225 can have any direction and position.
  • the first connecting wall 225 may include an outer top wall 222 of the first beam 220, and the outer top wall 222 is an outer wall of the first wall 220 and is simultaneously connected to the ends of the two outer side walls 223 and 224;
  • the first connecting wall 225 may also include a wall located inside the first beam 220 .
  • the first connecting wall 225 is usually perpendicular to the two outer side walls 223 and 224;
  • a partition wall 226 parallel to the two outer side walls 223 and 224 may also be provided between the two first connecting walls 225 of the outer side walls 223 and 224, so that more first cavities 221 are formed inside the first beam 220,
  • the embodiments of the present application are not limited thereto.
  • the partition wall 226 may be connected with the upper and lower first connecting walls 225 , that is, the first connecting wall 225 in the embodiment of the present application may include the partition wall 226 .
  • outer side walls 223 and 224 included in the first beam 220 in the embodiment of the present application and the plurality of first connecting walls 225 may have an integrally formed structure, or other methods may also be used, and the embodiment of the present application is not limited to this.
  • the two outer side walls 223 and 224 and the first connecting wall 225 in the embodiment of the present application form a plurality of first cavities 221 inside the first beam 220 . It may also be the same or different, and the embodiments of the present application are not limited thereto.
  • the plurality of first cavities 221 are all rounded rectangles as an example, but the sizes of the plurality of first cavities 221 are different.
  • the axes of the plurality of first cavities 221 of the first beam 220 are parallel to each other.
  • the first reinforcement structures 230 in the embodiments of the present application may also have different shapes and sizes.
  • the first reinforcement structure 230 in this embodiment of the present application may include a plurality of reinforcement blocks. Each of the reinforcing blocks in the blocks 2311 , 2312 and 2313 can be accommodated in a corresponding one of the first cavities 221 among the plurality of first cavities 221 included in the first beam 220 .
  • the first reinforcement structure 230 may include an insertion portion 231, the insertion portion 231 is accommodated in the first cavity 221, and the insertion portion 231 may include a plurality of reinforcement blocks 2311, 2312 and 2313, wherein, One reinforcing block is accommodated in one first cavity 221 , but any one of the first cavities 221 in the first beam 220 may contain no reinforcing block or one or more reinforcing blocks.
  • each first cavity 221 extends in the length direction of the first beam 220 (ie, the X direction in the figure), but the length of each reinforcement block may be less than or equal to the length of the first beam 220, that is, the reinforcement block may be located in the At one end of the first beam 220 close to the first wall 210, the length of the reinforcing block can be set according to practical applications.
  • the shape and size of the cross section are related to the first cavity 221 it accommodates. For example, as shown in FIGS.
  • the insertion portion 231 includes many The axes of the reinforcement blocks are also parallel.
  • the number of reinforcement blocks included in the first reinforcement structure 230 may be set to any value correspondingly.
  • the height direction of the first beam 220 is defined as the second direction, which is represented as the Z direction, then along the Z direction, the first beam includes 4 rows of first space
  • any one of the plurality of reinforcing blocks 2311 , 2312 and 2313 in the embodiment of the present application may be a solid block, so that the first reinforcing structure 230 has greater strength; or the plurality of reinforcing blocks 2311 and 2312 And 2313 can also be a hollow structure with a cavity, or other structures.
  • the reinforcing blocks 2311 , 2312 and 2313 may be hollow cuboid structures with one end open, and the walls of the reinforcing blocks 2311 , 2312 and 2313 have a certain thickness to ensure the first reinforcing structure 230 Strength of.
  • the first reinforcement structure 230 may be fixedly connected to the first beam 220 through the first connecting member 241 .
  • the first connecting member 241 may include one or more fasteners 2411, and the fasteners 2411 may include a head portion and a connecting portion.
  • the fasteners 2411 may be bolts, screws, or rivets, etc., which are implemented in this application. The example is not limited to this.
  • the first reinforcement structure 230 includes three reinforcement blocks 2311 , 2312 and 2313 , and the fasteners 2411 can pass through the outer surface of the first beam 220 .
  • the top wall 222 and at least one of the three reinforcing blocks 2311 , 2312 and 2313 are used to fix the first beam 220 and the first reinforcing structure 230 .
  • FIGS. 5 and 6 show that, taking the first reinforcement structure 230 shown in FIGS. 5 and 6 as an example, the first reinforcement structure 230 includes three reinforcement blocks 2311 , 2312 and 2313 , and the fasteners 2411 can pass through the outer surface of the first beam 220 .
  • the top wall 222 and at least one of the three reinforcing blocks 2311 , 2312 and 2313 are used to fix the first beam 220 and the first reinforcing structure 230 .
  • the length direction of the first beam 220 is defined as the first direction, denoted as the X direction, along the X direction
  • the three reinforcing blocks 2311 , 2312 and 2313 can be set as Different lengths, and then choose different ways to fix the fastener 2411.
  • the length of the middle reinforcing block 2312 can be set to be greater than the length of the other two reinforcing blocks 2311 and 2313, so that through holes can be provided on the middle reinforcing block 2312, and at the same time Through holes are provided on the outer top wall 222 and the inner first connecting wall 225 of a beam 220 , and through the through holes on the outer top wall 222 , the connecting portion of the fastener 2411 penetrates the first connection inside the first beam 220
  • the wall 225 and the middle reinforcement block 2312 are used to realize the fixation of the first beam 220 and the first reinforcement structure 230 .
  • the head of the fastener 2411 may be located on the outer surface of the outer top wall 222.
  • the outer surface of the outer top wall 222 of the first beam 220 may have a recess, and the first beam
  • the lower surface of the outer top wall 222 of 220 is the surface 2221, and the higher surface is the surface 2222, then the head of the fastener 2411 can be arranged on the lower surface 2221, so that the head of the fastener 2411
  • the height of the first beam 220 may not exceed the maximum height of the first beam 220 along the Z direction, and will not affect the installation of each component in the box 11.
  • the fasteners 2411 when it does not protrude in height, it will not affect the closing of the cover part 111 and the main body part 112 .
  • the head of the fastener 2411 can also be located in the cavity of the first beam 220 .
  • the head of the fastener 2411 can be fixed on the surface of the first connecting wall 225 inside the first beam 220 through the through hole on the outer top wall 222, so that, as shown in FIG.
  • the fasteners 2411 are all located inside the first beam 220 , and do not affect the external structure of the first beam 220 at all, which is convenient for other components to be installed.
  • the lengths of the plurality of reinforcement blocks of the first reinforcement structure 230 may also be set to other situations.
  • the lengths of the upper two reinforcing blocks 2311 and 2312 can be set to be greater than the reinforcing block 2313 in the lowermost direction, and the fasteners 2411 can penetrate through the two upper reinforcing blocks 2311 and 2312 to be fixed with the first beam 220,
  • the embodiments of the present application are not limited thereto, and will be described below with reference to the accompanying drawings.
  • FIG. 5 takes one fastener 2411 as an example, or a plurality of fasteners 2411 may be provided, and the plurality of fasteners 2411 may be arranged in the X direction to ensure the first beam 220 and the first reinforcement structure 230 between strength and stability.
  • the first connector 241 in an embodiment of the present application may further include an expansion glue 2412, the expansion glue 2412 is located between the first reinforcement structure 230 and the first beam 220 to connect the first The reinforcement structure 230 and the first beam 220 .
  • the thickness direction of the first beam 220 is defined as the third direction, which is represented as the Y direction
  • the expansion glue 2412 can be provided on the side wall surface of the first reinforcement structure 230 , namely The expansion glue 2412 can be disposed between at least one of the two outer side walls 222 and 223 of the first beam 220 and the first reinforcement structure 230, so that along the Y direction, the first reinforcement structure 230 is in the expansion glue 2412. Under the action of , the inner cavity of the first beam 220 can be filled.
  • the expansion glue 2412 may also be provided on other surfaces of the first reinforcement structure 230 , but the embodiment of the present application is not limited thereto.
  • the expansion glue 2412 may be coated on the surface of the first reinforcement structure 230 first, for example, the side wall of the first reinforcement structure 230 may be coated with the expansion glue 2412 .
  • the expansion glue 2412 is coated on the outer surface, and the first reinforcement structure 230 coated with the expansion glue 2412 is accommodated in the first cavity 221 .
  • the part of the first beam 220 corresponding to the expansion glue 2412 is heated, so that the expansion glue 2412 expands, so as to achieve the effect of filling, and realize the interference connection between the first reinforcement structure 230 and the first beam 220 , for example, can make
  • the expanding glue 2412 and the first reinforcing structure 230 fill the first cavity 221 along the X direction and/or the Z direction.
  • the fixing method between the first reinforcement structure 230 and the first beam 220 is mainly described above with reference to the accompanying drawings.
  • the fixing between the first reinforcement structure 230 and the first wall 210 will be described in detail below with reference to the accompanying drawings.
  • the first reinforcing structure 230 and the first wall 210 can be fixed in various ways.
  • first reinforcing structure 230 can be fixed at different positions of the second connecting member 242 and the first wall 210
  • the second connecting member 242 in the embodiment of the present application may include one or more fasteners, and each second connecting member 242 may include a connecting portion and a head, for example, the second connecting member 242 may be a bolt, Screws or rivets, etc., the embodiments of the present application are not limited thereto.
  • the first reinforcing structure 230 may further include a fixing portion 232 connected to the insertion portion 231 , the fixing portion 232 is located outside the first cavity 221 , and the fixing portion 232 is connected to the fixing portion 232 through the second connecting member 242
  • the first wall 210 is fixed.
  • the fixing portion 232 is fixed to the surface of the first wall 210 facing the inside of the box body 11 through the second connecting piece 242 , so that the first reinforcing structure 230 is fixed. Fixed with the first wall 210 .
  • the fixing portion 232 may be fixed with the inner sub-wall 211 of the first wall 210 , wherein the inner sub-wall 211 is the inner wall of the box body 11 .
  • the fixing portion 232 may be in the shape of a thin plate, and is fixed to the inner sub-wall 211 of the first wall 210 through one or more second connecting pieces 242 .
  • the second connecting pieces 242 include Taking four bolts as an example, the four bolts pass through the fixing portion 232 and the inner sub-wall 211 sequentially from the inside of the box body 11 to the outside of the box body 11 .
  • the fasteners may be fasteners such as bolts, screws or rivets for fixing between the first reinforcement structure 230 and the first wall 210 .
  • a groove may be provided on any reinforcing block included in the first reinforcing structure 230 , for example, a groove may be provided on the lowermost reinforcing block 2313 , and the bottom of the groove may be provided with a groove.
  • a through hole is provided on the wall, so that the fastener penetrates through the bottom wall of the groove and the inner sub-wall 211 to realize the fixation between the lowermost reinforcing block 2313 and the inner sub-wall 211 .
  • the size and shape of the fixing portion 232 of the first reinforcing structure 230 can be set according to practical applications.
  • the fixing portion 232 may be rectangular, or may be circular or other shapes.
  • the fixing portion 232 may be provided in a thin plate shape.
  • a groove may also be provided on the fixing portion 232, and the second connecting member 242 may be provided on the bottom wall of the groove, so as to reduce the occupied internal space of the box 11.
  • FIG. 8 shows another schematic diagram of the main body 112 of the box body 11 according to the embodiment of the present application. Different from the main body 112 shown in FIG. 4 , the first wall 210 and the first wall 210 of the main body 112 in FIG. Different first reinforcement structures 230 are used between the beams 220 .
  • first reinforcement structures 230 are set at two intersection positions of the first beam 220 and the first wall 210, that is, the first reinforcement structures 230 in the area B and the area C are different .
  • the first reinforcement structure 230 in the left region B will be introduced first.
  • FIG. 9 shows an exploded view of area B in FIG. 8 .
  • the first beam 220 in FIG. 9 corresponds to the first beam 220 in FIG. 5 , and is applicable to the related description of the first beam 220 in FIG. 5 ; and, the insertion portion 231 in FIG. 9 and the first connecting piece 241 respectively correspond to the inserting part 231 and the first connecting piece 241 in FIG. 5 , and are respectively applicable to the related description of the inserting part 231 and the first connecting piece 241 in FIG. 5 , for the sake of brevity, here are not repeated here.
  • the fixing portion 232 in FIG. 9 is different from the fixing portion 232 in FIG. 5 .
  • the inner sub-wall 211 of the first wall 210 has a first opening 2111 . 2111 is used to accommodate the fixing portion 232 in the cavity of the first wall 210 .
  • FIG. 10 shows a schematic cross-sectional view of the first wall 210 , and the cross-section is obtained by taking the first wall 210 perpendicular to the plane of the first wall 210 or parallel to the plane of the first beam 220 . Since the first wall 210 is perpendicular to the first beam 220 as an example in the embodiment of the present application, the thickness direction of the first wall 210 is the X direction, the height of the first wall 210 is the Z direction, and the thickness of the first wall 210 is the Z direction. The longitudinal direction is the Y direction. As shown in FIG. 9 and FIG.
  • the first wall 210 may include an inner sub-wall 211 , an outer sub-wall 212 and a second connecting wall 213 for connecting the inner sub-wall 211 and the outer sub-wall 212
  • the inner sub-wall 211 is
  • the outer sub-wall 212 is the outer wall of the box body 11
  • the inner sub-wall 211 , the outer sub-wall 212 and the second connecting wall 213 form one or more second walls of the first wall 210 Cavity 214 .
  • the shape, size, position and number of the second cavity 214 can be set according to practical applications, which are not limited in the embodiment of the present application.
  • the distribution of the second cavity 214 of the first wall 210 is shown in FIG. 10 as an example, that is, the second connecting wall 213 includes a part of the wall parallel to the inner sub-wall 211 and the outer sub-wall 212 , which is referred to here as
  • the middle wall 2131 is such that the second cavity 214 includes a row of second cavities 2141 and 2142 adjacent to the inner sub-wall 211 and a row of second cavities 2143 and 2144 adjacent to the outer sub-wall 212 .
  • the inner sub-wall 211 of the first wall 210 in the embodiment of the present application has a first opening 2111 , and the first opening 2111 is used to accommodate the fixing portion 232 in the hollow of the first wall 210 .
  • the fixing part 232 is accommodated in a row of second cavities 2141 and 2142 close to the inner sub-wall 211, so that the second connecting piece 242 fixes the fixing part 232 on the middle wall 2131, thereby realizing the first reinforcement Fixation of structure 230 to first wall 210 .
  • FIG. 11 shows a partial exploded view of the outer sub-wall 212 of the first wall 210 , as shown in FIGS. 9 to 11 , the outer sub-wall 212 is provided with a second opening 2121 , and the second opening 2121 is used for The second connecting piece 242 is installed so that the second connecting piece 242 can fix the fixing part 232 and the middle wall 2131 through the second opening 2121 .
  • the first wall 210 may further include a sealing plate 2122 , the sealing plate 2122 is sealingly connected to the second opening 2121 , so that the outer sub-wall 212 of the first wall 210 is relatively sealed.
  • the first reinforcement structure 230 in the embodiment of the present application may also be fixed to the first wall 210 in other ways, for example, the area C in FIG. 8 , and FIG. 12 shows the area in FIG. 8 .
  • C is an enlarged view
  • FIG. 13 is an exploded view of FIG. 12
  • FIGS. 14 and 15 are cross-sectional views of FIG. 12 , wherein the cross-section of FIG. 14 is obtained by cutting the first beam 220 along a plane parallel to the first beam 220
  • the cross section of FIG. 15 is taken along a plane parallel to the bottom wall of the main body portion 112 (or a plane perpendicular to both the first wall 210 and the first beam 220 ) taking the first beam 220 .
  • the thickness direction of the first wall 210 or the length direction of the first beam 220 is the X direction
  • the first wall 210 is perpendicular to the first beam 220.
  • the height direction of the wall 210 or the height direction of the first beam 220 is the Z direction
  • the length direction of the first wall 210 or the thickness direction of the first beam 220 is the Y direction.
  • the first beam 220 in FIGS. 12 to 15 corresponds to the first beam 220 in FIG. 5 , and is applicable to the related description of the first beam 220 in FIG. 5 ; 12 to FIG. 15 corresponds to the insertion part 231 in FIG. 5 , and is applicable to the description of the insertion part 231 in FIG. 5 ; the first connecting piece 241 in FIG. 12 to FIG.
  • the first connector 241 of FIG. 5 corresponds to, and is applicable to the related description of the first connector 241 in FIG. 5 , and is not repeated here for brevity.
  • the first reinforcement structure 230 shown in FIGS. 12 to 15 may include a plurality of reinforcement blocks, and one reinforcement block is correspondingly accommodated in a first cavity of the first beam 220 , for example, here to include Take three reinforcing blocks as an example, and the axes of the three reinforcing blocks are parallel to each other.
  • the lengths of the three reinforcing blocks along the X direction can also be set to be the same or different, and the same is used as an example for description here.
  • the first connector 241 in this embodiment of the present application may include a plurality of fasteners 2411, for example, three fasteners 2411 are used as an example for description here.
  • the plurality of fasteners 2411 may be arranged in the X direction, and each fastener 2411 may be arranged in the height direction.
  • each fastener 2411 can penetrate at least one reinforcing block from top to bottom.
  • FIG. 14 takes two reinforcing blocks as an example, while The lowermost reinforcement block is partially penetrated by fasteners 2411.
  • the outer top wall 222 of the first beam 220 may be provided with a stepped structure.
  • the outer top wall 222 of the first beam 220 is provided with a stepped structure, the lower surface of the stepped structure is the surface 2221, the higher surface is the surface 2222, and the two surfaces with different heights make the outer top wall 222 has a recess 2223 in which the head of the fastener 2411 can be located, that is, the head is provided on the lower surface 2221, so that the head of the fastener 2411 is in the position of the first beam 220.
  • the height direction does not exceed the maximum height of the first beam 220 .
  • the fastener 2411 is not protruding in the Z direction, and will not affect the installation of the main body 112.
  • the fastener 2411 is not high in height. Protruding, it will not affect the closure of the cover part 111 and the main body part 112 .
  • a second reinforcement structure 250 may also be provided on the lower surface 2221 .
  • the box body 11 further includes a second reinforcement structure 250
  • the second reinforcement structure 250 includes a first part 251 and a second part 252 that are connected.
  • the first part 251 is fixed on the surface of the first wall 210 facing the first beam 220 , that is, the first part 251 is fixed on the outer surface of the inner sub-wall 211 ; the second part 252 is fixed on the outer top of the first beam 220 wall 222, and the fastener 2411 penetrates the second part 252, for example, the second part 252 can be fixed to the lower surface 2221.
  • the second reinforcement structure 250 can reduce the stress concentration at the end of the first beam 220 that is in contact with the first wall 210 , and can also prevent the first beam 220 from tilting in the Z direction.
  • the second reinforcing structure 250 may include a groove 253 , wherein a bottom wall of the groove 253 located in the second part 252 is provided with a through hole for the fastener 2411 to penetrate through the second part 252 .
  • the shape of the part of the second reinforcing structure 250 in contact with the inner sub-wall 211 can be set according to the outer surface of the inner sub-wall 211 .
  • the first part 251 may have convex and concave areas, so that the first part 251 can fit on the outer surface of the inner sub-wall 211 , but the embodiment of the present application is not limited thereto.
  • the first reinforcement structure 230 in FIGS. 12 to 15 does not include the fixing portion 232 , but is fixed to the first wall 210 in other ways.
  • the box body 11 may further include a third reinforcing structure 260 , the third reinforcing structure 260 is disposed in the second cavity 214 of the first wall 210 , and the third reinforcing structure 260 passes through the second connecting member 242 It is fixed with the first wall 210 and the first reinforcement structure 230 .
  • the third reinforcing structure 260 can be fixed on the middle wall 2131 .
  • the outer sub-wall 212 of the first wall 210 may be provided with a second opening 2121, and the second opening 2121 may be used to install the second connector 242 and the third reinforcing structure 260, and correspondingly, the first The wall 210 also includes a sealing plate 2122 that is sealingly connected to the second opening 2121 . As shown in FIGS.
  • the third reinforcing structure 260 can be fixed on the surface of the intermediate wall 2131 facing the outer sub-wall 212 through the second opening 2121 , and the second connecting member 242 penetrates the third reinforcing structure 260 and the second connecting member 242 in sequence.
  • the middle wall 2131 extends into the first reinforcement structure 230, and then the third reinforcement structure 260, the first wall 210 and the first reinforcement structure 230 are fixed.
  • the shape and installation position of the third reinforcement structure 260 can also be adjusted accordingly.
  • the second cavity 214 located at the bottom of the first wall 210 in FIGS. 12 to 15 has a larger volume and no intermediate wall 2131 exists. Therefore, at least a part of the third reinforcing structure 260 may not be fixed on the middle wall 2131 , for example, the part may be directly fixed on the surface of the inner sub-wall 211 of the first wall 210 facing the outer sub-wall 212 .
  • the third reinforcement structure 260 may be partially fixed on the middle wall 2131 and partially fixed on the inner sub-wall 210
  • FIG. 16 shows a schematic diagram of the third reinforcement structure 260 in the embodiment of the present application.
  • the third reinforcement structure 160 may be It has a stepped structure as shown in FIG. 16 , but the embodiment of the present application is not limited to this.
  • the corresponding region of the first reinforcement structure 230 can be attached to the surface of the middle wall 2131 facing the inner sub-wall 211 , as shown in FIGS. 12 to 15 .
  • the first reinforcement structure 230 has a stepped structure, and at least part of the first reinforcement structure 230 can be accommodated in the second space 214, for example, an opening can be provided on the inner wall 211 to accommodate the part of the first reinforcement structure 230, and fix the part of the first reinforcement structure 230 on the surface of the intermediate wall 2131 facing the inner sub-wall 211, but the embodiment of the present application is not limited thereto.
  • the third reinforcing structure 260 may include one or more grooves 261, and the bottom wall of each groove 261 is provided with a through hole 262 for installing the second connector 242,
  • the second connecting member 242 may include a fastener having a connecting portion and a head portion, the connecting portion passes through the through hole 262 , and the head portion is disposed on the bottom wall of the groove 261 .
  • the number of the grooves 261 on the third reinforcing structure 260 in the embodiment of the present application may be set according to the number of the second connecting members 242 .
  • the second connecting member 242 may be a bolt, and the number of the grooves 261 is equal to the number of the bolts.
  • the position of the groove 261 in the third reinforcing structure 260 can be set according to the part of the second cavity 214 .
  • one groove 261 corresponds to one second cavity 214 , but the embodiment of the present application is not limited thereto.
  • the first reinforcement structure 230 is provided at the position where the first beam 220 and the first wall 210 intersect, and the first reinforcement structure 230 is at least partially accommodated in the cavity of the first beam 220 inside, and are respectively fixed with the first beam 220 and the first wall 210, so as to fix the first beam 220 and the first wall 210, so as to provide the The strength of the intersection of the first beam 220 and the first wall 210 effectively solves the problem of failure at the intersection of the two under the action of expansion force.
  • FIG. 17 shows a schematic flowchart of a method 300 for preparing a battery case according to an embodiment of the present application.
  • the method 300 may include: S310, providing a plurality of walls, the plurality of walls are used to form the accommodation space of the box, and the plurality of walls include a first wall; S320, providing a first beam, the first beam is arranged In the accommodating space, and the first beam intersects the first wall, the interior of the first beam has a first cavity; S330, a first reinforcement structure is provided, at least part of the first reinforcement structure is accommodated in the first cavity, and the first reinforcement structure is accommodated in the first cavity.
  • the reinforcing structure is respectively fixed with the first beam and the first wall through the first connecting piece and the second connecting piece, so that the first wall is connected and fixed with the first beam.
  • the first connecting member includes expansion glue
  • the method 300 further includes: coating expansion glue on at least part of the outer surface of the first reinforcement structure; accommodating the part of the first reinforcement structure coated with expansion glue in the first reinforcement structure
  • the first reinforcing structure is connected with the first beam after heating the accommodated part in the cavity, so that the expansion glue is expanded.
  • FIG. 18 shows a schematic block diagram of an apparatus 400 for preparing a battery case according to an embodiment of the present application.
  • the apparatus 400 may include: a providing module 410 .
  • Module 410 is provided for:
  • a plurality of walls are provided, and the plurality of walls are used to form the accommodating space of the box, and the plurality of walls include a first wall; a first beam is provided, the first beam is arranged in the accommodating space, and the first beam intersects with the first wall, and the first beam is provided.
  • the inside of a beam has a first cavity; a first reinforcement structure is provided, at least part of the first reinforcement structure is accommodated in the first cavity, and the first reinforcement structure is connected to the first beam and the first beam through the first connecting piece and the second connecting piece respectively.
  • the first wall is fixed so that the first wall is connected and fixed with the first beam.
  • the first connector includes expansion glue
  • the device further includes a processing module 420, the processing module 420 is used for: coating expansion glue on at least part of the outer surface of the first reinforcement structure; coating the first reinforcement structure with The part of the intumescent glue is accommodated in the first cavity, and the accommodated part is heated, so that after the intumescent glue expands, the first reinforcing structure is connected to the first beam.

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Abstract

本申请实施例提供一种电池的箱体、电池、用电设备、制备箱体的方法和装置。该电池的箱体包括：多个壁，用于形成所述箱体的容纳空间，所述多个壁包括第一壁；第一梁，设置在所述容纳空间内，且所述第一梁与所述第一壁相交，所述第一梁的内部具有第一空腔；第一加强结构，至少部分所述第一加强结构容纳于所述第一空腔内，所述第一加强结构通过第一连接件和第二连接件分别与所述第一梁和所述第一壁固定，以使所述第一壁与所述第一梁连接固定。本申请实施例的电池的箱体、电池、用电设备、制备箱体的方法和装置，能够提高箱体的强度。

Description

电池的箱体、电池、用电装置、制备箱体的方法和装置 技术领域
本申请涉及电池技术领域，特别是涉及一种电池的箱体、电池、用电装置、制备箱体的方法和装置。
背景技术
电池包的箱体是所有部件的载体，其结构强度及密封性能尤为重要。目前箱体包括的底板、梁和壁等部分采用搭接拼焊的方式制造。但箱体的壁与梁之间的焊缝处易形成应力集中，而焊缝强度较低，有失效风险，无法满足箱体强度需求。
发明内容
本申请提供了一种电池的箱体、电池、用电设备、制备箱体的方法和装置，能够提高箱体的强度。
第一方面，提供了一种电池的箱体，包括：多个壁，用于形成所述箱体的容纳空间，所述多个壁包括第一壁；第一梁，设置在所述容纳空间内，且所述第一梁与所述第一壁相交，所述第一梁的内部具有第一空腔；第一加强结构，至少部分所述第一加强结构容纳于所述第一空腔内，所述第一加强结构通过第一连接件和第二连接件分别与所述第一梁和所述第一壁固定，以使所述第一壁与所述第一梁连接固定。
因此，本申请实施例的电池的箱体，通过将第一加强结构至少部分容纳在第一梁的空腔内，以固定第一梁与第一壁，可以在不占用箱体内部空间或占用极小空间的情况下，极大的增加第一梁与第一壁之间的刚度和强度，能够解决在采用焊接方式固定第一梁与第一壁时，由于焊缝强度低而导致的受膨胀力易失效的问题。
在一些实施例中，所述第一梁包括两个外侧壁和连接所述两个外侧壁的第一连接壁，所述两个外侧壁和所述第一连接壁形成多个所述第一空腔。
应理解，本申请实施例中的第一梁的内部可以包括一个或者多个第一空腔，并且在包括多个第一空腔时，该多个第一空腔的形状以及尺寸等均可以根据实际应用进行设置，例如，该多个第一空腔的尺寸可以各不相同；再例如，该多个第一空腔的形状可以相同，以便于加工。
在一些实施例中，所述第一加强结构包括多个加强块，所述多个加强块中每个加强块容纳于多个所述第一空腔中对应的一个第一空腔内。
本申请实施例中的一个第一空腔内可以容纳一个或者多个加强块，若一个空腔内仅容纳一个加强块，那么容纳的加强块的尺寸和形状与对应的第一空腔保持一致，以便于加工和安装。
在一些实施例中，所述第一连接件包括沿第一方向排列的多个紧固件，所述第一方向为所述第一梁的长度方向。
在一些实施例中，所述第一加强结构包括多个加强块，所述第一连接件包括紧固件，所述紧固件包括连接部和头部，所述紧固件的连接部沿第二方向贯穿所述多个加强块中的至少一个加强块，所述第二方向为所述第一梁的高度方向。
为了保证紧固件、第一加强结构以及第一梁之间的强度，每个紧固件沿第二方向上的长度通常设置为占第一加强结构沿该第二方向上的高度的一半以上。
在一些实施例中，所述第一梁的外顶壁上设置有凹部，所述紧固件的头部位于所述凹部内，以使所述紧固件的头部在所述第一梁的高度方向上不超过所述第一梁的最大高度。
紧固件的头部的高度不超过第一梁的最大高度，可以不影响该箱体内各个部件的安装。例如，若该箱体包括主体部和盖部，主体部为中空且一端开口的长方体，而该盖部为板状，以盖合该主体部的开口，那么将紧固件的头部设置在凹部内，不超过第一梁的最大高度，则不会影响该盖部的安装，保证该盖部可以与主体部的封闭。
在一些实施例中，所述箱体还包括第二加强结构，所述第二加强结构包括相连的第一部分和第二部分，所述第一部分固定于所述第一壁的朝向所述第一梁的表面，所述第二部分固定于所述第一梁的外顶壁，且所述紧固件贯穿所述第二部分。
该第二加强结构同时紧贴第一梁和第一壁，能够尽量避免第一梁沿高度方向向上翘起。并且，紧固件的头部设置在该第二加强结构上，能够有效避免紧固件与第一梁之间的应力集中的问题，提高稳定性。
在一些实施例中，所述第一连接件包括膨胀胶，所述膨胀胶位于所述第一加强结构与所述第一梁之间，以连接所述第一加强结构和所述第一梁。
可选地，可以在第一梁的至少一个侧壁与第一加强结构之间增加膨胀胶，以使得第一加强结构与膨胀胶能够填满该第一梁的两个侧壁之间的空隙。
在一些实施例中，所述第一壁包括内子壁、外子壁和用于连接所述内子壁和所述外子壁的第二连接壁，所述内子壁为所述箱体的内壁，所述外子壁为所述箱体的外壁，所述内子壁、所述外子壁和所述第二连接壁形成所述第一壁的第二空腔。
第一壁的内部可以具有一个或者多个第二空腔，如果具有多个第二空腔，则该多个第二空腔的形状以及尺寸等均可以根据实际应用进行设置，例如，该多个第二空腔的尺寸可以各不相同；再例如，该多个第二空腔的形状可以相同，以便于加工。
在一些实施例中，所述第一加强结构包括固定部和插入部，所述插入部容纳于所述第一空腔内，所述固定部位于所述第一空腔外，所述固定部通过所述第二连接件与所述第一壁固定，以使所述第一加强结构与所述第一壁固定。
例如，该固定部可以为薄板状，将该固定部通过第二连接件固定于第一壁的内子壁，比如该第二连接件可以为螺栓、螺钉或者铆钉等紧固件，该第二连接依次贯穿固定部和第一壁的内子壁，以便于安装。
在一些实施例中，所述固定部容纳于所述第二空腔内。
在一些实施例中，所述内子壁设置有第一开口，所述第一开口用于将所述固定部容纳于所述第二空腔内。
固定部直接固定于第一壁的内子壁，还是会占用箱体内部的部分空间，降低了空间利用率，因此，可以通过在该第一壁的内子壁上开口，将固定部容纳于第一壁的第二空腔内，以达到不占用箱体内部空间的目的。
例如，可以将该固定部固定于外子壁的朝向内子壁的表面，或者，也可以将该固定部固定于位于内子壁和外子壁之间的中间壁上，具体地，可以固定在中间壁的朝向内子壁的表面，该中间壁可以平行于内子壁或者外子壁。
在一些实施例中，所述箱体还包括：第三加强结构，设置在所述第二空腔内，且所述第三加强结构通过所述第二连接件与所述第一壁、所述第一加强结构固定。
例如，该第三加强结构可以之间固定于内子壁的朝向外子壁的表面，或者，也可以将该第三加强结构固定于中间壁的朝向外子壁的表面。
在一些实施例中，所述外子壁设置有第二开口，所述第二开口用于安装所述第二连接件。
可以通过该外子壁的第二开口将第二连接件、中间壁和固定部进行固定。
或者，还可以通过在外子壁的第二开口，将第三加强结构容纳于第一壁的第二空腔内，并通过该第二开口将第二连接件、第三加强结构和第一加强结构进行固定。
在一些实施例中，所述第一壁还包括密封板，所述密封板密封连接于所述第二开口，以使得外子壁具有密封性。
在一些实施例中，所述箱体包括：主体部和盖部，所述主体部为一端开口的中空结构，所述盖部用于盖合所述主体部的开口，以形成封闭腔室，所述第一壁为所述主体部的任意一个壁。
可选地，所述箱体也可以包括盖部和主体部，所述盖部和所述主体部均为一端开口的中空结构，所述盖部的开口与所述主体部的开口相对设置，并且所述盖部与所述主体部相互扣合，以形成封闭腔室。其中，所述第一壁可以为所述盖部和所述主体部的任意一个壁。
第二方面，提供了一种电池，包括：多个电池单体；以及第一方面或者第一方面中任意一个实施例所述的电池的箱体，其中，所述多个电池单体容纳于所述箱体内。
第三方面，提供了一种用电装置，包括：第二方面所述的电池。
第四方面，提供了一种制备电池的箱体的方法，包括：提供多个壁，所述多个壁用于形成所述箱体的容纳空间，所述多个壁包括第一壁；
提供第一梁，所述第一梁设置在所述容纳空间内，且所述第一梁与所述第一壁相交，所述第一梁的内部具有第一空腔；提供第一加强结构，至少部分所述第一加强结构容纳于所述第一空腔内，所述第一加强结构通过第一连接件和第二连接件分 别与所述第一梁和所述第一壁固定，以使所述第一壁与所述第一梁连接固定。
在一些实施例中，所述第一连接件包括膨胀胶，所述方法还包括：在所述第一加强结构的至少部分外表面上涂覆所述膨胀胶；将所述第一加强结构的涂覆有所述膨胀胶的部分容纳于所述第一空腔内，并对容纳的部分进行加热，以使所述膨胀胶发生膨胀后，将所述第一加强结构与所述第一梁连接。
第五方面，提供了一种制备电池的装置，包括执行上述第四方面或第四方面中任一实施例的方法的模块。
附图说明
图1是本申请一实施例公开的车辆的结构示意图；
图2是本申请一实施例公开的电池的分解结构示意图；
图3是本申请一实施例公开的电池的结构示意图；
图4是本申请一实施例公开的电池箱体的主体部的示意图；
图5是本申请一实施例公开的电池箱体的局部爆炸图；
图6是本申请一实施例公开的第一加强结构的示意图；
图7是本申请一实施例公开的第一梁的截面示意图；
图8是本申请一实施例公开的另一电池箱体的示意图；
图9是本申请一实施例公开的另一电池箱体的局部爆炸图；
图10是本申请一实施例公开的第一壁的截面示意图；
图11是本申请一实施例公开的第一壁的外子壁的局部示意图；
图12是本申请一实施例公开的另一电池箱体的局部示意图；
图13是本申请一实施例公开的另一电池箱体的另一局部爆炸图；
图14是本申请一实施例公开的另一电池箱体的局部截面示意图；
图15是本申请一实施例公开的另一电池箱体的另一局部截面示意图；
图16是本申请一实施例公开的第三加强结构的示意图；
图17为本申请一实施例公开的制备电池的箱体的方法的示意性流程图；
图18为本申请一实施例公开的制备电池的箱体的装置的示意性框图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，除非另有说明，“多个”的含义是两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方位或位置关系仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必 须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。“垂直”并不是严格意义上的垂直，而是在误差允许范围之内。“平行”并不是严格意义上的平行，而是在误差允许范围之内。
下述描述中出现的方位词均为图中示出的方向，并不是对本申请的具体结构进行限定。在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本申请中的具体含义。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池 单体一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池可以包括电池模块或电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔膜的材质可以为PP或PE等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
本申请实施例中的电池的箱体用于容纳多个电池单体、汇流部件以及电池的其他部件。在一些实施例中，箱体中还可以设置用于固定电池单体的结构。箱体的形状可以根据所容纳的多个电池单体而定。在一些实施例中，箱体可以为方形，具有六个壁。
本申请中所提到的汇流部件用于实现多个电池单体之间的电连接，例如并联或串联或混联。汇流部件可通过连接电池单体的电极端子实现电池单体之间的电连接。在一些实施例中，汇流部件可通过焊接固定于电池单体的电极端子。
应理解，以上描述的电池的箱体中的各个部件不应理解为对本申请实施例的限定，也就是说，本申请实施例的用于电池的箱体可以包括上述的部件，也可以不包括上述的部件。
本申请实施例描述的技术方案均适用于各种使用电池的装置，例如，手机、便携式设备、笔记本电脑、电瓶车、电动玩具、电动工具、车辆、船舶和航天器等，例如，航天器包括飞机、火箭、航天飞机和宇宙飞船等。
应理解，本申请实施例描述的技术方案不仅仅局限适用于上述所描述的设备，还可以适用于所有使用电池的设备，但为描述简洁，下述实施例均以车辆为例进行说明。
例如，如图1所示，为本申请一个实施例的一种车辆1的结构示意图，车辆1可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1的内部可以设置马达40，控制器30以及电池10，控制器30用来控制电池10为马达40的供电。例如，在车辆1的底部或车头或车尾可 以设置电池10。电池10可以用于车辆1的供电，例如，电池10可以作为车辆1的操作电源，用于车辆1的电路系统，例如，用于车辆1的启动、导航和运行时的工作用电需求。在本申请的另一实施例中，电池10不仅仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，替代或部分地替代燃油或天然气为车辆1提供驱动动力。
为了满足不同的使用电力需求，电池10可以包括多个电池单体。例如，图2为本申请一个实施例的一种电池10的分解结构示意图，电池10可以包括多个电池单体20。根据不同的电力需求，电池单体20的数量可以设置为任意数值。多个电池单体20可通过串联、并联或混联的方式连接以实现较大的容量或功率。由于每个电池10中包括的电池单体20的数量可能较多，为了便于安装，可以将电池单体20分组设置，每组电池单体20组成电池模块。电池模块中包括的电池单体20的数量不限，可以根据需求设置。电池可以包括多个电池模块,这些电池模块可通过串联、并联或混联的方式进行连接。
可选地，电池10还可以包括其他结构。例如，该电池10还可以包括汇流部件，汇流部件用于实现多个电池单体20之间的电连接，例如并联或串联或混联。具体地，汇流部件可通过连接电池单体20的电极端子实现电池单体20之间的电连接。进一步地，汇流部件可通过焊接固定于电池单体20的电极端子。多个电池单体20的电能可进一步通过导电机构穿过箱体而引出。可选地，导电机构也可属于汇流部件。
电池10还可以包括箱体11(或称罩体)，箱体11内部为中空结构，多个电池单体20容纳于箱体11内。如图2所示，箱体11可以包括两部分，这里分别称为盖部111和主体部112(或者也可以称为上箱体和下箱体)，盖部111和主体部112扣合在一起。盖部111和主体部112的形状可以根据多个电池单体20组合的形状而定，盖部111和主体部112中至少一个部件具有一个开口。例如，箱体11包括的盖部111和主体部112中可以仅有一个为具有开口的中空长方体，而另一个为板状，以盖合开口。例如，如图2所示，这里以主体部112为中空长方体且只有一个面为开口面，盖部111为板状为例，盖部111盖合在主体部112的开口处以形成具有封闭腔室的箱体11，该腔室可以用于容纳多个电池单体20。
可选地，本申请实施例中的箱体11包括的盖部111和主体部112还可以具有其他形状，例如，盖部111和主体部112均可以为中空长方体且各自只有一个面为开口面，盖部111的开口和主体部112的开口相对设置，并且盖部111和主体部112相互扣合形成具有封闭腔室的箱体11。多个电池单体20相互并联或串联或混联组合后置于盖部111和主体部112扣合后形成的箱体内。
为了便于说明，下文主要以图2所示的箱体11为例进行说明，但本申请实施例并不限于此。
图3示出了图2中主体部112与电池20的安装图，如图3所示，由于箱体11的主体部112是内部各个部件的载体，其结构强度及密封性能尤为重要。目前箱体11包括的底板和壁等部分之间采用搭接拼焊的方式制造。但各个壁之间的或者壁与位于内部的梁之间的焊缝处易形成应力集中，而焊缝强度较低，有失效风险，无法满足箱体11强度需求。如果通过在箱体11内增加加强支架来增加箱体11的壁和梁之间的 强度，该加强支架需要占用箱体11内部空间，进而导致该箱体11的内部空间利用率低，影响电池单体20的安装。
因此，本申请实施例提供了一种电池的箱体，能够解决上述问题。
图4示出了本申请实施例的箱体11的主体部112的示意图，图5为图4所示的主体部112中区域A的爆炸图。本申请实施例中的主体部112可以包括具有一定厚度的多个壁，以形成该主体部112的中空结构。例如，图4中的主体部112包括四个侧壁和一个底壁，形成了中空的长方体。为了便于说明，下文中以主体部112包括的第一壁210为例进行说明，该第一壁210可以为主体部112的任意一个壁，例如，如图4所示，该第一壁210可以为主体部112的任一侧壁，但是本申请实施例并不限于此。
在该主体部112的内部还设置有至少一个梁，每个梁与主体部112的一个或者多个壁相连。例如，可以根据主体部112中承载的电池单体20的个数确定梁的个数，若电池单体20个数较多，可以设置多个梁以保证箱体11的强度，若电池单体20个数较少，则可以设置一个或者少数梁即可。例如，如图4和图5所示，这里以与第一壁210相交的第一梁220为例进行说明，该第一梁220可以为主体部112包括的至少一个梁中的任意一个梁。
如图4和图5所示，在第一壁210与第一梁220相交的位置还可以设置有加强结构，以固定第一壁210与第一梁220，并且增加第一壁210与第一梁220之间的强度。例如，图4和图5以该第一梁220与第一壁210相交处设置的第一加强结构230为例，并且图6示出了图4和图5中的第一加强结构230的示意图，图7示出了第一梁220的截面示意图，该截面为采用平行于第一壁210的平面截取该第一梁220获取的。另外，由于该主体部112内部可以具有一个或者多个第一梁220，对应的第一梁220与第一壁210之间可以具有多处相交的位置，并可以在该多处相交的位置中全部或者部分位置处设置该第一加强结构230，例如，图4仅示出了其中任意一处相交的位置，但本申请实施例并不限于此。
如图4-7所示，该第一梁220具有一定厚度，其内部具有空腔，这里称为第一空腔221；第一加强结构230的至少部分容纳于该第一空腔221内，该第一加强结构230通过第一连接件241与第一梁220固定、且通过第二连接件242与第一壁210固定，以使该第一壁210与该第一梁220连接固定。
因此，本申请实施例的箱体11，通过将第一加强结构230设置在第一梁220的空腔内，以固定第一梁220与第一壁210，可以在不占用箱体11内部空间或占用极小空间的情况下，极大的增加第一梁220与第一壁210之间的刚度和强度，能够解决在采用焊接方式固定第一梁220与第一壁210时，由于焊缝强度低而导致的受膨胀力易失效的问题。
如图4-7所示，在本申请的一个实施例中，第一加强结构230的至少部分容纳于该第一空腔221内，具体地，该第一梁220可以包括两个外侧壁223和224，还包括连接该两个外侧壁223和224的第一连接壁225。其中，该第一梁220的两个外侧壁223和224中每个外侧壁的表面可以为平整的，或者也可以为不平整的，例如，外 侧壁223和224的外表面或者内表面的局部区域上可以具有凸起或者凹槽，或者也可以在外表面或内表面上设置其他部件，本申请实施例并不限于此。
另外，该第一梁220的两个外侧壁223和224之间可以为相互平行的或者近似平行的，例如，两个外侧壁223和224的相对的两个内表面之间可以为平行的，但本申请实施例并不限于此。为了便于描述，本文主要以该第一梁220的两个外侧壁223和224为相互平行的两个壁为例进行描述。
如图4-7所示，该第一梁220还包括连接该两个外侧壁223和224的第一连接壁225，其中，该第一连接壁225可以具有任意方向和位置。例如，该第一连接壁225可以包括该第一梁220的外顶壁222，该外顶壁222为第一壁220的一个外壁，且同时与两个外侧壁223和224的端部相连；另外，该第一连接壁225还可以包括位于第一梁220内部的壁。另外，考虑到两个外侧壁223和224通常为平行的两个壁，为了便于加工以及增加结构强度，第一连接壁225通常垂直于两个外侧壁223和224；并且，在均垂直于两个外侧壁223和224的两个第一连接壁225之间还可以设置与两个外侧壁223和224平行的间隔壁226，以使第一梁220内部形成更多的第一空腔221，但本申请实施例并不限于此。其中，如图7所示，该间隔壁226可以与上下两个第一连接壁225相连，即本申请实施例中的第一连接壁225可以包括该间隔壁226。
应理解，本申请实施例中的第一梁220包括的外侧壁223和224与多个第一连接壁225之间可以为一体成型结构，或者也可以采用其他方式，本申请实施例并不限于此。
本申请实施例中的两个外侧壁223和224与第一连接壁225形成第一梁220内部的多个第一空腔221，该多个第一空腔221的尺寸可以相同或者不同，形状也可以相同或者不同，本申请实施例并不限于此。例如，图7中以多个第一空腔221均为圆角矩形为例，但多个第一空腔221的尺寸不同。再例如，当两个外侧壁223和224平行，并且第一连接壁225垂直于两个外侧壁223和224时，第一梁220的多个第一空腔221的轴线之间相互平行。
应理解，对应于不同的第一空腔221，本申请实施例的第一加强结构230也可以具有不同的形状和尺寸。具体地，如图4-7所示，本申请实施例中的该第一加强结构230可以包括多个加强块，例如，这里以三个加强块2311、2312和2313为例，该多个加强块2311，2312，2313中每个加强块能够容纳于第一梁220内部包括的多个第一空腔221中对应的一个第一空腔221内。
如图5和图6所示，第一加强结构230可以包括插入部231，插入部231容纳于该第一空腔221内，插入部231可以包括多个加强块2311、2312和2313，其中，一个加强块容纳于一个第一空腔221内，但是第一梁220中的任意一个第一空腔221内可以不容纳加强块或者容纳一个或者多个加强块。并且，每个第一空腔221在第一梁220的长度方向(即图中X方向)上延伸，但每个加强块的长度可以小于或者等于第一梁220的长度，即加强块可以位于第一梁220的靠近于第一壁210的一端，加强块的长度可以根据实际应用进行设置。但是，对于任意一个加强块的沿垂直于第一梁220的平面(或者沿平行于第一壁210的平面)的截面而言，该截面的形状和尺寸与其 容纳的第一空腔221相关。例如，如图4-7所示，若第一梁220的内部的多个第一空腔的轴线彼此平行，并且，一个第一空腔内最多设置一个加强块，那么插入部231包括的多个加强块的轴线也平行。
可选地，本申请的一个实施例中的该第一加强结构230包括的加强块的个数可以对应设置为任意值。例如，以图5至图7为例，这里将该第一梁220的高度方向定义为第二方向，表示为Z方向，则在沿该Z方向上，该第一梁包括4行第一空腔221，对应的，若一个第一空腔221内至多容纳一个加强块，该第一加强结构230可以包括最多4行加强块，例如，图5和图6以包括三个加强块2311、2312和2313为例，或者也可以设置为其他个数的加强块。
应理解，本申请实施例中的多个加强块2311、2312和2313中任意一个加强块可以为实心块，以使该第一加强结构230具有较大强度；或者该多个加强块2311、2312和2313也可以为具有空腔的中空结构，或者其他结构。例如，如图5和图6所示，加强块2311、2312和2313可以为一端开口的中空长方体结构，并且加强块的2311、2312和2313的壁具有一定厚度，以保证该第一加强结构230的强度。
在本申请实施例中，第一加强结构230可以通过第一连接件241与第一梁220固定连接。可选地，第一连接件241可以包括一个或者多个紧固件2411，紧固件2411可以包括头部和连接部，例如，紧固件2411可以为螺栓、螺钉或者铆钉等，本申请实施例并不限于此。
应理解，以图5和图6所示的第一加强结构230为例，第一加强结构230包括三个加强块2311、2312和2313，紧固件2411可以通过贯穿该第一梁220的外顶壁222以及三个加强块2311、2312和2313中至少一个加强块，以使该第一梁220与第一加强结构230固定。具体地，如图4至图7所示，这里将第一梁220的长度方向定义为第一方向，表示为X方向，沿该X方向，可以将三个加强块2311、2312和2313设置为不同长度，进而选择不同的方式固定该紧固件2411。
例如，如图4至图7所示，中间加强块2312的长度可以设置为大于另外两个加强块2311和2313的长度，这样，可以在中间加强块2312的上设置通孔，同时也在第一梁220的外顶壁222上以及内部第一连接壁225上设置通孔，通过外顶壁222上的通孔，将紧固件2411的连接部贯穿该第一梁220内部的第一连接壁225和中间加强块2312，以实现第一梁220和第一加强结构230的固定。其中，该紧固件2411的头部可以位于外顶壁222的外表面，例如，如图4和图5所示，第一梁220的外顶壁222的外表面可以具有凹部，第一梁220的外顶壁222中较低的表面为表面2221，较高的表面为表面2222，那么可以将紧固件2411的头部设置在较低表面2221上，这样，该紧固件2411的头部的高度可以不超过该第一梁220沿Z方向的最大高度，不会影响箱体11内各个部件的安装，例如，与主体部112对应的盖部111为平板状时，紧固件2411在高度上不突出，就不会影响该盖部111与主体部112的闭合。或者，该紧固件2411的头部也可以位于第一梁220的空腔内。例如，可以通过外顶壁222上的通孔，将紧固件2411的头部固定在第一梁220内部的第一连接壁225的表面上，这样，如图4所示，安装之后，紧固件2411全部位于第一梁220的内部，完全不影响第一梁220 的外部结构，便于其他部件安装。
可选地，不同于图5或图6的结构，该第一加强结构230的多个加强块的长度还可以设置为其他情况。例如，可以将上方的两个加强块2311和2312的长度均设置为大于最下方向的加强块2313，紧固件2411可以贯穿上方的两个加强块2311和2312以与第一梁220固定，本申请实施例并不限于此，下文中会结合附图进行描述。
应理解，本申请实施例中紧固件2411的个数可以根据实际应用进行设置。例如，图5以一个紧固件2411为例，或者，也可以设置多个紧固件2411，该多个紧固件2411可以沿X方向排列，以保证第一梁220和第一加强结构230之间的强度和稳定性。
可选地，本申请的一个实施例中的该第一连接件241还可以包括膨胀胶2412，该膨胀胶2412位于该第一加强结构230与该第一梁220之间，以连接该第一加强结构230和该第一梁220。具体地，如图4至图7所示，这里将第一梁220的厚度方向定义为第三方向，表示为Y方向，可以在该第一加强结构230的侧壁表面设置膨胀胶2412，即可以在第一梁220的两个外侧壁222和223中至少一个外侧壁与第一加强结构230之间设置该膨胀胶2412，以使得沿Y方向上，第一加强结构230在该膨胀胶2412的作用下，能够填满该第一梁220的内部空腔。或者，也可以在第一加强结构230的其他表面设置膨胀胶2412，本申请实施例并不限于此。
在本申请实施例中，在安装该第一加强结构230时，可以先在该第一加强结构230的表面上涂覆该膨胀胶2412，例如，可以在该第一加强结构230的侧壁的外表面涂覆该膨胀胶2412，再将该涂有膨胀胶2412的第一加强结构230容纳至第一空腔221内。对该第一梁220的对应于膨胀胶2412的部分进行加热，使得膨胀胶2412发生膨胀，以达到填充的作用，实现第一加强结构230与第一梁220的过盈连接，例如，可以令膨胀胶2412和第一加强结构230沿X方向和/或Z方向充满第一空腔221。
上文中结合附图，主要对第一加强结构230与第一梁220之间的固定方式进行了介绍，下面将结合附图，详细描述该第一加强结构230与第一壁210之间的固定。可选地，第一加强结构230和第一壁210之间可以采用多种方式进行固定，例如，该第一加强结构230可以通过第二连接件242与第一壁210的不同位置进行固定，其中，本申请实施例中的第二连接件242可以包括一个或者多个紧固件，每个第二连接件242可以包括连接部和头部，例如，该第二连接件242可以为螺栓、螺钉或者铆钉等，本申请实施例并不限于此。
可选地，作为一个实施例，第一加强结构230还可以包括与插入部231相连的固定部232，固定部232位于该第一空腔221外，固定部232通过第二连接件242与该第一壁210固定，具体地，如图4和图5所示，固定部232通过该第二连接件242与第一壁210的朝向箱体11内部的表面固定，以使第一加强结构230与第一壁210固定。
具体地，如图4和图5所示，固定部232可以与第一壁210的内子壁211固定，其中，该内子壁211为箱体11的内壁。例如，如图4至图6所示，固定部232可以为薄板形状，通过一个或者多个第二连接件242与第一壁210的内子壁211固 定，图中是以第二连接件242包括4个螺栓为例，4个螺栓从箱体11的内部朝向箱体11外部，依次贯穿固定部232和内子壁211。
可选地，为了进一步增加该第一加强结构230与第一壁210之间的强度和稳定性，如图5和图6所示，还可以在插入部231上设置连接件，例如，该连接件可以为螺栓、螺钉或者铆钉等紧固件，以用于第一加强结构230与第一壁210之间的固定。具体地，如图5和图6所示，可以在第一加强结构230包括的任意一个加强块上设置凹槽，比如可以在最下方的加强块2313上设置凹槽，并在该凹槽底壁设置上设置通孔，以使紧固件贯穿该凹槽底壁和内子壁211，实现最下方的加强块2313与内子壁211之间的固定。
应理解，该第一加强结构230的固定部232的尺寸和形状可以根据实际应用进行设置。例如，如图4至图6所示，该固定部232可以为矩形，或者也可以设置为圆形或者其他形状。并且，为了不过多占用箱体11内部空间，该固定部232可以设置为薄板状。进一步的，还可以在固定部232上设置凹槽，将第二连接件242设置在凹槽的底壁，以减小占用的箱体11内部空间。
可选地，作为另一个实施例，相比于图5和图6所示的薄板状的固定部232，该固定部232还可以具有更大的厚度，并且将固定部232设置在第一壁210的空腔内。具体地，图8示出了本申请实施例的箱体11的主体部112的另一示意图，不同于图4所示的主体部112，图8中的主体部112的第一壁210和第一梁220之间采用了不同的第一加强结构230。并且，对于主体部112内一个或者多个第一梁220和第一壁210，可以对应具有多处相交位置，该多处相交位置可以设置有相同的第一加强结构230，或者也可以设置不同的第一加强结构230，例如，图8中第一梁220和第一壁210的两处相交位置设置了不同的第一加强结构230，即区域B和区域C内的第一加强结构230不同。这里首先对左侧区域B内的第一加强结构230进行介绍。
图9示出了图8中区域B的爆炸图。如图9所示，图9中的第一梁220与图5中的第一梁220相对应，并且适用于图5中的第一梁220的相关描述；并且，图9中的插入部231和第一连接件241分别与图5中的插入部231和第一连接件241相对应，并且分别适用于图5中的插入部231和第一连接件241的相关描述，为了简洁，在此均不再赘述。
对比图5可知，图9中的固定部232与图5中的固定部232不同，具体地，如图9所示，第一壁210的内子壁211上具有第一开口2111，该第一开口2111用于将该固定部232容纳于该第一壁210的空腔内。
图10示出了第一壁210的截面示意图，该截面为垂直于该第一壁210的平面或者平行于第一梁220的平面截取该第一壁210获取的。由于本申请实施例中以第一壁210垂直于第一梁220为例，那么该第一壁210的厚度方向为X方向，该第一壁210的高度为Z方向，该第一壁210的长度方向为Y方向。如图9和图10所示，该第一壁210可以包括内子壁211、外子壁212和用于连接该内子壁211和该外子壁212的第二连接壁213，该内子壁211为该箱体11的内壁，该外子壁212为该箱体11的外壁，该内子壁211、该外子壁212和该第二连接壁213形成该第一壁210的一个或者多 个第二空腔214。
类似第一梁220内的第一空腔221，该第二空腔214的形状、尺寸、位置及个数等均可以根据实际应用进行设置，本申请实施例对此不做限定。例如，这里以该第一壁210的第二空腔214的分布如图10所示为例，即第二连接壁213中包括平行于该内子壁211和外子壁212的一部分壁，这里称为中间壁2131，使得第二空腔214包括靠近内子壁211的一排第二空腔2141和2142，还包括靠近外子壁212的一排第二空腔2143和2144。
如图9和图10所示，本申请实施例的第一壁210的内子壁211上具有第一开口2111，该第一开口2111用于将该固定部232容纳于该第一壁210的空腔内，例如，将固定部232容纳于靠近内子壁211的一排第二空腔2141和2142内，以使得第二连接件242将固定部232固定在中间壁2131上，进而实现第一加强结构230与第一壁210的固定。
具体地，可以通过在外子壁212上开口，以安装固定第二连接件232、中间壁2131和固定部232。具体地，图11示出了第一壁210的外子壁212的局部爆炸图，如图9至图11所示，该外子壁212设置有第二开口2121，该第二开口2121用于安装该第二连接件242，使得第二连接件242可以通过该第二开口2121将固定部232和中间壁2131固定。
可选地，如图11所示，该第一壁210还可以包括密封板2122，该密封板2122密封连接于该第二开口2121，以使该第一壁210的外子壁212相对密封。
可选地，作为再一个实施例，本申请实施例中第一加强结构230还可以采用其他方式与第一壁210固定，例如，图8中的区域C，图12示出了图8中区域C的放大图，图13为图12的爆炸图，图14和图15为图12的截面图，其中，图14的截面为沿平行于第一梁220的平面截取第一梁220获取的，图15的截面为沿平行于主体部112的底壁的平面(或者说沿同时垂直于第一壁210和第一梁220的平面)截取第一梁220获取的。如图12至15，参照图8，同样以第一壁210垂直于第一梁220为例，则该第一壁210的厚度方向或者说第一梁220的长度方向为X方向，该第一壁210的高度方向或者说第一梁220的高度方向为Z方向，该第一壁210的长度方向或者说第一梁220的厚度方向为Y方向。
如图12至图15所示，图12至图15中的第一梁220与图5中的第一梁220相对应，并且适用于图5中的第一梁220的相关描述；同时，图12至图15中的第一加强结构230对应于图5中的插入部231，并且适用于图5中的插入部231相关描述；图12至图15中的第一连接件241与图5中的第一连接件241相对应，并且适用于图5中的第一连接件241的相关描述，为了简洁，在此均不再赘述。
例如，与图5类似，图12至图15所示的第一加强结构230可以包括多个加强块，一个加强块对应容纳于第一梁220的一个第一空腔内，例如，这里以包括3个加强块为例，并且该3个加强块的轴线相互平行。另外，该3个加强块沿X方向的长度也可以设置为相同或不同，这里以相同为例进行描述。
本申请实施例中的第一连接件241可以包括多个紧固件2411，例如，这里 以3个紧固件2411为例进行说明。多个紧固件2411可以沿X方向排列，而每个紧固件2411可以沿高度方向设置。对于如图所示的3个长度相同且相互平行的加强块而言，每个紧固件2411可以自上之下至少贯穿一个加强块，例如，图14以贯穿两个加强块为例，而最下方的加强块被紧固件2411部分穿过。
另外，如图12至图15所示，该第一梁220的外顶壁222可以设置有台阶结构。具体地，该第一梁220的外顶壁222上设置具有台阶结构，该台阶结构中较低的表面为表面2221，较高的表面为表面2222，两个高度不同的表面使该外顶壁222具有凹部2223，该紧固件2411的头部可以位于该凹部2223内，即该头部设置在较低的表面2221上，以使该紧固件2411的头部在该第一梁220的高度方向上不超过该第一梁220的最大高度。这样，该紧固件2411在Z方向上不是凸起的，不会影响该主体部112的安装，例如，与主体部112对应的盖部111为平板状时，紧固件2411在高度上不突出，就不会影响该盖部111与主体部112的闭合。
可选地，为了降低第一梁220与第一壁210接触部分的应力集中导致的变形，还可以在较低表面2221上设置第二加强结构250。具体地，如图12和图13所示，该箱体11还包括第二加强结构250，该第二加强结构250包括相连的第一部分251和第二部分252。该第一部分251固定于该第一壁210的朝向该第一梁220的表面，即该第一部分251固定于内子壁211的外表面；该第二部分252固定于该第一梁220的外顶壁222，且该紧固件2411贯穿该第二部分252，例如，该第二部分252可以固定于较低的表面2221。该第二加强结构250可以减少第一梁220的与第一壁210接触的一端的应力集中，也可以防止第一梁220沿Z方向翘起。
可选地，该第二加强结构250可以包括凹槽253，其中，位于第二部分252的凹槽253的底壁设置有通孔，以用于紧固件2411贯穿该第二部分252。并且，由于内子壁211的外表面可能存在部分凸起或者凹陷的区域，而该第二加强结构250与该内子壁211接触的部分的形状可以根据该内子壁211的外表面进行设置。例如，如图12和图13所示，第一部分251可以具有凸起和凹陷区域，以使该第一部分251可以贴合于内子壁211的外表面，但本申请实施例并不限于此。
应理解，对比图5，图12至图15中的第一加强结构230不包括固定部232，而是采用其他方式与第一壁210固定。具体地，该箱体11还可以包括第三加强结构260，该第三加强结构260设置在第一壁210的第二空腔214内，且该第三加强结构260通过该第二连接件242与该第一壁210、该第一加强结构230固定。
应理解，仍然以图10和图11所示的第一壁210结构为例，该第三加强结构260可以固定在中间壁2131上。具体地，该第一壁210的外子壁212可以设置有第二开口2121，该第二开口2121可以用于安装该第二连接件242以及第三加强结构260，并且对应的，该第一壁210还包括密封板2122，该密封板2122密封连接于该第二开口2121。如图12至图15所示，该第三加强结构260可以通过该第二开口2121，固定于中间壁2131的朝向外子壁212的表面，第二连接件242依次贯穿第三加强结构260和中间壁2131，并伸入第一加强结构230中，进而将第三加强结构260、第一壁210和第一加强结构230进行固定。
可选地，考虑到第一壁210内的第二空腔214的分布可以根据实际应用灵活设置，因此，该第三加强结构260的形状和安装位置也可以对应调整。例如，由于该第一壁210内部可能存在至少部分区域不包括中间壁2131，例如图12至图15中第一壁210的位于最下方的第二空腔214体积较大，不存在中间壁2131，因此，该第三加强结构260也可以存在至少一部分不固定于中间壁2131上，例如，该部分可以直接固定于第一壁210的内子壁211的朝向外子壁212的表面。即该第三加强结构260可以部分固定于中间壁2131上，部分固定于内子壁210上，则图16示出了本申请实施例的第三加强结构260的示意图，该第三加强结构160可以具有如图16所示的台阶形结构，但本申请实施例并不限于此。
另外，对于第三加强结构260中固定于中间壁2131的一部分，第一加强结构230中与之对应的区域可以贴合于中间壁2131的朝向内子壁211的表面，即如图12至图15所示，第一加强结构230具有台阶形结构，存在至少部分第一加强结构230可以容纳于第二空间214内，例如，可以通过在内子壁211上设置开口，以容纳该部分第一加强结构230，并将该部分第一加强结构230固定于中间壁2131的朝向内子壁211的表面，但本申请实施例并不限于此。
可选地，如图16所示，该第三加强结构260可以包括一个或者多个凹槽261，每个凹槽261的底壁设置有通孔262，以用于安装第二连接件242，例如，该第二连接件242可包括具有连接部和头部的紧固件，则连接部穿过该通孔262，头部则设置在凹槽261的底壁。
应理解，本申请实施例中第三加强结构260上凹槽261的个数可以根据第二连接件242的个数进行设置。例如，如图12至图16所示，第二连接件242可以为螺栓，凹槽261的个数等于螺栓的个数。
另外，该第三加强结构260中凹槽261的位置可以根据第二空腔214的部分进行设置。例如，如图12至图16所示，一个凹槽261对应于一个第二空腔214，但本申请实施例并不限于此。
因此，本申请实施例的电池箱体11，在第一梁220和第一壁210相交的位置设置有第一加强结构230，该第一加强结构230至少部分容纳于第一梁220的空腔内，并且分别与第一梁220和第一壁210固定，从而固定第一梁220和第一壁210，进而可以在不占用箱体11内部空间或者占用极小的空间的情况下，提供该第一梁220和第一壁210相交处的强度，有效的解决了在膨胀力作用下二者相交处失效的问题。
上文描述了本申请实施例的电池箱体、电池和用电装置，下面将描述本申请实施例的制备电池的箱体的方法和装置，其中未详细描述的部分可参见前述各实施例。
图17示出了本申请一个实施例的制备电池的箱体的方法300的示意性流程图。如图17所示，该方法300可以包括：S310，提供多个壁，多个壁用于形成箱体的容纳空间，多个壁包括第一壁；S320，提供第一梁，第一梁设置在容纳空间内，且第一梁与第一壁相交，第一梁的内部具有第一空腔；S330，提供第一加强结构，至少部分第一加强结构容纳于第一空腔内，第一加强结构通过第一连接件和第二连接件分别 与第一梁和第一壁固定，以使第一壁与第一梁连接固定。
可选地，第一连接件包括膨胀胶，方法300还包括：在第一加强结构的至少部分外表面上涂覆膨胀胶；将第一加强结构的涂覆有膨胀胶的部分容纳于第一空腔内，并对容纳的部分进行加热，以使膨胀胶发生膨胀后，将第一加强结构与第一梁连接。
图18示出了本申请一个实施例的制备电池的箱体的装置400的示意性框图。如图18所示，该装置400可以包括：提供模块410。提供模块410用于：
提供多个壁，多个壁用于形成箱体的容纳空间，多个壁包括第一壁；提供第一梁，第一梁设置在容纳空间内，且第一梁与第一壁相交，第一梁的内部具有第一空腔；提供第一加强结构，至少部分第一加强结构容纳于第一空腔内，第一加强结构通过第一连接件和第二连接件分别与第一梁和第一壁固定，以使第一壁与第一梁连接固定。
可选地，第一连接件包括膨胀胶，装置还包括处理模块420，处理模块420用于：在第一加强结构的至少部分外表面上涂覆膨胀胶；将第一加强结构的涂覆有膨胀胶的部分容纳于第一空腔内，并对容纳的部分进行加热，以使膨胀胶发生膨胀后，将第一加强结构与第一梁连接。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (22)

  1. 一种电池的箱体，其特征在于，包括：
    多个壁，用于形成所述箱体的容纳空间，所述多个壁包括第一壁(210)；
    第一梁(220)，设置在所述容纳空间内，且所述第一梁(220)与所述第一壁(210)相交，所述第一梁(220)的内部具有第一空腔(221)；
    第一加强结构(230)，至少部分所述第一加强结构(230)容纳于所述第一空腔(221)内，所述第一加强结构(230)通过第一连接件(241)和第二连接件(242)分别与所述第一梁(220)和所述第一壁(210)固定，以使所述第一壁(210)与所述第一梁(220)连接固定。
  2. 根据权利要求1所述的箱体，其特征在于，所述第一梁(220)包括两个外侧壁(223，224)和连接所述两个外侧壁(223，224)的第一连接壁(225)，所述两个外侧壁(223，224)和所述第一连接壁(225)形成多个所述第一空腔(221)。
  3. 根据权利要求2所述的箱体，其特征在于，所述第一加强结构(230)包括多个加强块(2311，2312，2313)，所述多个加强块(2311，2312，2313)中每个加强块容纳于多个所述第一空腔(221)中对应的一个第一空腔(221)内。
  4. 根据权利要求1至3中任一项所述的箱体，其特征在于，所述第一连接件(241)包括沿第一方向排列的多个紧固件(2411)，所述第一方向为所述第一梁(220)的长度方向。
  5. 根据权利要求1至4中任一项所述的箱体，其特征在于，所述第一加强结构(230)包括多个加强块(2311，2312，2313)，所述第一连接件(241)包括紧固件(2411)，所述紧固件(2411)包括连接部和头部，所述紧固件(2411)的连接部沿第二方向贯穿所述多个加强块(2311，2312，2313)中的至少一个加强块，所述第二方向为所述第一梁(220)的高度方向。
  6. 根据权利要求5所述的箱体，其特征在于，所述第一梁(220)的外顶壁(222)上设置有凹部(2223)，所述紧固件(2411)的头部位于所述凹部(2223)内，以使所述紧固件(2411)的头部在所述第一梁(220)的高度方向上不超过所述第一梁(220)的最大高度。
  7. 根据权利要求4至6中任一项所述的箱体，其特征在于，所述箱体还包括第二加强结构(250)，所述第二加强结构(250)包括相连的第一部分(251)和第二部分(252)，所述第一部分(251)固定于所述第一壁(210)的朝向所述第一梁(220)的表面，所述第二部分(252)固定于所述第一梁(220)的外顶壁(222)，且所述紧固件(2411)贯穿所述第二部分(252)。
  8. 根据权利要求1至7中任一项所述的箱体，其特征在于，所述第一连接件(241)包括膨胀胶(2412)，所述膨胀胶(2412)位于所述第一加强结构(230)与所述第一梁(220)之间，以连接所述第一加强结构(230)和所述第一梁(220)。
  9. 根据权利要求1至8中任一项所述的箱体，其特征在于，所述第一壁(210)包 括内子壁(211)、外子壁(212)和用于连接所述内子壁(211)和所述外子壁(212)的第二连接壁(213)，所述内子壁(211)为所述箱体的内壁，所述外子壁(212)为所述箱体的外壁，所述内子壁(211)、所述外子壁(212)和所述第二连接壁(213)形成所述第一壁(210)的第二空腔(214)。
  10. 根据权利要求9所述的箱体，其特征在于，所述第一加强结构(230)包括固定部(232)和插入部(231)，所述插入部(231)容纳于所述第一空腔(221)内，所述固定部(232)位于所述第一空腔(221)外，所述固定部(232)通过所述第二连接件(242)与所述第一壁(210)固定，以使所述第一加强结构(230)与所述第一壁(210)固定。
  11. 根据权利要求10所述的箱体，其特征在于，所述固定部(232)容纳于所述第二空腔(214)内。
  12. 根据权利要求11所述的箱体，其特征在于，所述内子壁(211)设置有第一开口(2111)，所述第一开口(2111)用于将所述固定部(232)容纳于所述第二空腔(214)内。
  13. 根据权利要求9所述的箱体，其特征在于，所述箱体还包括：
    第三加强结构(260)，设置在所述第二空腔(214)内，且所述第三加强结构(260)通过所述第二连接件(242)与所述第一壁(210)、所述第一加强结构(230)固定。
  14. 根据权利要求11至13中任一项所述的箱体，其特征在于，所述外子壁(212)设置有第二开口(2121)，所述第二开口(2121)用于安装所述第二连接件(242)。
  15. 根据权利要求14所述的箱体，其特征在于，所述第一壁(210)还包括密封板(2122)，所述密封板(2122)密封连接于所述第二开口(2121)。
  16. 根据权利要求1至15中任一项所述的箱体，其特征在于，所述箱体包括：主体部(112)和盖部(111)，
    所述主体部(112)为一端开口的中空结构，所述盖部(111)用于盖合所述主体部(112)的开口，以形成封闭腔室，
    所述第一壁(210)为所述主体部(112)的任意一个壁。
  17. 一种电池，其特征在于，包括：
    多个电池单体；以及
    根据权利要求1至16中任一项所述的箱体，其中，所述多个电池单体容纳于所述箱体内。
  18. 一种用电装置，其特征在于，包括：根据权利要求17所述的电池，所述电池用于提供电能。
  19. 一种制备电池的箱体的方法，其特征在于，包括：
    提供多个壁(310)，所述多个壁用于形成所述箱体的容纳空间，所述多个壁包括第一壁；
    提供第一梁(320)，所述第一梁设置在所述容纳空间内，且所述第一梁与所述第 一壁相交，所述第一梁的内部具有第一空腔；
    提供第一加强结构(330)，至少部分所述第一加强结构容纳于所述第一空腔内，所述第一加强结构通过第一连接件和第二连接件分别与所述第一梁和所述第一壁固定，以使所述第一壁与所述第一梁连接固定。
  20. 根据权利要求19所述的方法，其特征在于，所述第一连接件包括膨胀胶，所述方法还包括：
    在所述第一加强结构的至少部分外表面上涂覆所述膨胀胶；
    将所述第一加强结构的涂覆有所述膨胀胶的部分容纳于所述第一空腔内，并对容纳的部分进行加热，以使所述膨胀胶发生膨胀后，将所述第一加强结构与所述第一梁连接。
  21. 一种制备电池的箱体的装置，其特征在于，包括：提供模块(410)，所述提供模块(410)用于：
    提供多个壁，所述多个壁用于形成所述箱体的容纳空间，所述多个壁包括第一壁；
    提供第一梁，所述第一梁设置在所述容纳空间内，且所述第一梁与所述第一壁相交，所述第一梁的内部具有第一空腔；
    提供第一加强结构，至少部分所述第一加强结构容纳于所述第一空腔内，所述第一加强结构通过第一连接件和第二连接件分别与所述第一梁和所述第一壁固定，以使所述第一壁与所述第一梁连接固定。
  22. 根据权利要求21所述的装置，其特征在于，所述第一连接件包括膨胀胶，所述装置还包括处理模块(420)，所述处理模块(420)用于：
    在所述第一加强结构的至少部分外表面上涂覆所述膨胀胶；
    将所述第一加强结构的涂覆有所述膨胀胶的部分容纳于所述第一空腔内，并对容纳的部分进行加热，以使所述膨胀胶发生膨胀后，将所述第一加强结构与所述第一梁连接。
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