WO2023088089A1 - 电池的箱体、电池、用电装置及电池的制造设备 - Google Patents

电池的箱体、电池、用电装置及电池的制造设备 Download PDF

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Publication number
WO2023088089A1
WO2023088089A1 PCT/CN2022/129086 CN2022129086W WO2023088089A1 WO 2023088089 A1 WO2023088089 A1 WO 2023088089A1 CN 2022129086 W CN2022129086 W CN 2022129086W WO 2023088089 A1 WO2023088089 A1 WO 2023088089A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
side wall
reinforcing beam
frame
hollow cavity
Prior art date
Application number
PCT/CN2022/129086
Other languages
English (en)
French (fr)
Inventor
潘鑫
王庆
陈智明
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
Publication of WO2023088089A1 publication Critical patent/WO2023088089A1/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
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of batteries, in particular to a battery box, a battery, an electrical device and battery manufacturing equipment.
  • the reinforcing beam is often fixed to the battery box through a connecting piece connected to the battery box.
  • a connecting piece connected to the battery box.
  • it is difficult to guarantee the installation accuracy and connection reliability between the reinforcement beam and the battery box. Therefore, how to improve the installation accuracy and connection reliability of the reinforcing beam has become an urgent problem to be solved.
  • the present application provides a battery box, battery, electrical device and battery manufacturing equipment, which can solve the problems of installation accuracy and connection reliability of the reinforcing beam.
  • the present application provides a battery box, including: a frame for forming an accommodating cavity; a reinforcing beam disposed inside the accommodating cavity, the reinforcing beam having a hollow cavity; a connecting piece for For connecting the frame and the reinforcing beam, part of the connecting piece is accommodated in the hollow cavity.
  • the connector includes a connected first fixing portion and a second fixing portion, the first fixing portion is used for connecting the frame, the second fixing portion is used for connecting the reinforcement beam, At least part of the second fixing portion is accommodated in the hollow cavity.
  • At least part of the second fixing portion abuts against the inner wall of the hollow cavity.
  • the second fixing portion includes a first side wall and a second side wall oppositely disposed, and the first side wall and the second side wall are used to abut against the inner wall of the hollow cavity and a connecting wall for connecting the first side wall and the second side wall.
  • the connecting wall is connected to one end of the first side wall and the second side wall, and the other ends of the first side wall and the second side wall are separated from each other to form a The openings opposite to the connecting walls.
  • the first side wall and the second side wall can be pressed to facilitate the second fixing The part enters the hollow cavity in the reinforcement beam, thereby improving the installation efficiency of the reinforcement beam.
  • the reinforcing beam is provided with a through hole, at least part of the second fixing part is exposed through the through hole, so as to be welded and fixed with the reinforcing beam.
  • the through hole is arranged on the reinforcement beam, so that the reinforcement beam can be welded to the second fixing part exposed from the through hole, thereby improving the connection strength between the reinforcement beam and the connecting piece, and further improving the connection between the reinforcement beam and the box body. connection reliability.
  • the first fixing portion is connected to an edge of the second fixing portion and extends in a direction away from the reinforcing beam.
  • the frame is provided with a receiving groove for receiving at least part of the first fixing part.
  • the first fixing part can be accommodated in the space in the accommodation groove, thereby reducing the space occupied by the connector in the box, reducing the risk of the battery module colliding with the connector when the box is in use, thereby improving Enhanced reliability of beam connections.
  • the present application provides a battery, which includes the box body and the battery cells in the above embodiments, and the box body is used to accommodate the battery cells.
  • the present application provides an electric device, which includes the battery provided in the second aspect of the present application, and the battery is used to provide electric energy.
  • the present application provides a battery manufacturing equipment, which includes a supply module for providing battery cells and a box body, the box body includes: a frame, a reinforcing beam and a connector, and the frame is used to form The accommodating cavity, the reinforcing beam is arranged inside the accommodating cavity, and the reinforcing beam has a hollow cavity; the connecting piece is used to connect the frame and the reinforcing beam, and part of the connecting piece is accommodated in the a hollow cavity; an assembly module for accommodating the battery cells in the box.
  • part of the connecting piece between the reinforcement beam and the frame is accommodated in the hollow cavity of the reinforcement beam.
  • This design makes it possible to adjust the installation position of the reinforcement beam in the box by adjusting the depth of the connecting piece entering the hollow cavity when the reinforcement beam is installed, which overcomes the problem of installation accuracy of the reinforcement beam due to parts processing errors; in addition, it is also effective
  • the excessive extrusion of other components in the box to the connecting piece is reduced, thereby improving the reliability of the connection between the connecting piece and the frame and the reinforcing beam.
  • Fig. 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application.
  • Fig. 2 is a schematic structural diagram of a battery provided by an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a battery module provided by an embodiment of the application.
  • Fig. 4 is a schematic diagram of an exploded structure of a battery cell provided by an embodiment of the present application.
  • Fig. 5 is a schematic diagram of the overall structure of a box provided by an embodiment of the present application.
  • Fig. 6 is a schematic top view of a box provided by an embodiment of the present application.
  • Fig. 7 is a partial schematic view at A of Fig. 5;
  • Fig. 8 is a schematic cross-sectional view along B-B of Fig. 6;
  • Fig. 9 is a schematic cross-sectional view of a box along B-B provided by another embodiment of the present application.
  • Fig. 10 is a schematic diagram of a partial explosion of a box provided by an embodiment of the present application.
  • Fig. 11 is a schematic diagram of a manufacturing device provided by an embodiment of the present application.
  • 40 frame 401 accommodating cavity, 402 accommodating groove, 41 reinforcing beam, 411 hollow cavity, 411a inner wall of hollow cavity, 412 through hole, 42 connector, 421 first fixing part, 422 second fixing part, 422a first side wall, 422b second side wall, 422c connecting wall, 422d opening;
  • the first feature may be in direct contact with the first feature or the second feature "on” or “under” the second feature. Indirect contact through intermediaries.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the batteries of electric vehicles often need dozens or even thousands of battery cells.
  • Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields .
  • electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields .
  • the market demand is also constantly expanding.
  • the reinforcing beam in the current battery box is generally connected to the frame of the box by direct plugging or external L-shaped connectors.
  • the reinforcement beam when the reinforcement beam is fixed by the L-shaped connector and the frame, the bolt assembly protruding toward the battery module on the connector may collide with the battery module, and this collision will affect the reinforcement.
  • the reliability of the connection between the beam and the frame; another connection method is to install the reinforcing beam directly in the mounting hole of the frame by plugging, but at the same time it will be accompanied by the problem of difficulty in controlling the hole position accuracy.
  • a battery box which includes specially designed connectors and accommodates part of the connectors in hollow cavities of reinforcing beams.
  • the installation position of the reinforcing beam in the box can be adjusted by adjusting the depth of the connecting piece entering the hollow cavity, which overcomes the installation accuracy of the reinforcing beam due to parts processing errors during installation problem; in addition, it also effectively reduces the excessive extrusion of other parts in the box to the connecting piece, thereby improving the reliability of the connection between the connecting piece and the frame and the reinforcing beam.
  • the present application provides a battery box, a battery including the box, and an electrical device using the battery.
  • the case is suitable for any battery, such as battery modules and packs, or primary and secondary batteries, for example, secondary batteries including NiMH, NiCd, lead-acid (or lead-acid) batteries, lithium-ion batteries , Na-ion batteries, polymer batteries, etc.
  • This battery is suitable for a variety of electrical devices that use batteries, such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships and spacecraft, etc.
  • spacecraft include aircraft, rockets, aerospace Aircraft and spacecraft, etc.; batteries are used to provide electrical energy for the above-mentioned electrical devices.
  • FIG. 1 is a schematic structural diagram of a vehicle 1 provided by some embodiments of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1 is provided with a battery 10 , and the battery 10 may be provided at the bottom, head or tail of the vehicle 1 .
  • the battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 .
  • the vehicle 1 may further include a controller 11 and a motor 12 , the controller 11 is used to control the battery 10 to supply power to the motor 12 , for example, for starting, navigating, and working power requirements of the vehicle 1 during driving.
  • the battery 10 can not only be used as an operating power source for the vehicle 1 , but can also be used as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .
  • the battery 10 may include a plurality of battery cells 21 , and the battery cells 21 refer to the smallest unit forming a battery module or a battery pack.
  • a plurality of battery cells 21 may be connected in series and/or in parallel via electrode terminals for various applications.
  • the batteries mentioned in this application include battery modules or battery packs.
  • a plurality of battery cells 21 may be connected in series, in parallel or in parallel, and in parallel refers to a mixture of series and parallel.
  • the battery 10 may also be called a battery pack.
  • a plurality of battery cells 21 may directly form a battery pack, or may first form a battery module 20, and then the battery module 20 forms a battery pack.
  • FIG. 2 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application.
  • the battery 10 may include a plurality of battery modules 20 and a case 30 , and the plurality of battery modules 20 are accommodated inside the case 30 .
  • the box body 30 is used for accommodating the battery cells 21 or the battery modules 20 , so as to prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells 21 .
  • the box body 30 may be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as a cuboid, cylinder or sphere, which is not limited in this embodiment of the present application.
  • the material of the box body 30 can be such as alloy materials such as aluminum alloy, iron alloy, also can be as polymer material such as polycarbonate, polyisocyanurate foamed plastics, or be the composite material such as glass fiber plus epoxy resin, The embodiment of the present application does not limit this.
  • the box body 30 may include a first part 301 and a second part 302, the first part 301 and the second part 302 cover each other, the first part 301 and the second part 302 jointly define a Space.
  • the second part 302 can be a hollow structure with one end open, the first part 301 can be a plate-shaped structure, and the first part 301 covers the opening side of the second part 302, so that the first part 301 and the second part 302 jointly define a battery.
  • the space of the unit 21 ; the first part 301 and the second part 302 can also be a hollow structure with one side opening, and the opening side of the first part 301 covers the opening side of the second part 302 .
  • FIG. 3 shows a schematic structural diagram of a battery module 20 according to an embodiment of the present application.
  • the battery module 20 can include a plurality of battery cells 21, and the plurality of battery cells 21 can be connected in series, parallel or mixed to form the battery module 20, and then the battery modules 20 can be connected in series, parallel or mixed to form the battery 10.
  • the battery cell 21 may include a lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., which is not limited in this embodiment of the present application.
  • the battery cell 21 may be in the shape of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • the battery cells 21 are generally divided into three types according to the way of packaging: cylindrical battery cells 21 , square square battery cells 21 and pouch battery cells 21 , which are not limited in this embodiment of the present application. However, for the sake of brevity, the following embodiments all take the square-shaped battery cell 21 as an example for illustration.
  • FIG. 4 is a schematic diagram of an exploded structure of a battery cell 21 provided in some embodiments of the present application.
  • the battery cell 21 refers to the smallest unit constituting a battery. As shown in FIG. 4 , the battery cell 21 includes an end cover 211 , a casing 212 and an electrode assembly 213 .
  • the end cap 211 refers to a component that covers the opening of the casing 212 to isolate the internal environment of the battery cell 21 from the external environment.
  • the shape of the end cap 211 can be adapted to the shape of the housing 212 to match the housing 212 .
  • the end cap 211 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 211 is not easily deformed when it is squeezed and collided, so that the battery cell 21 can have a higher Structural strength and safety performance can also be improved.
  • Functional components such as electrode terminals 211 a may be provided on the end cap 211 .
  • the electrode terminal 211 a can be used to be electrically connected with the electrode assembly 213 for outputting or inputting electric energy of the battery cell 21 .
  • the end cap 211 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold value.
  • an insulator can be provided inside the end cover 211 , and the insulator can be used to isolate the electrical connection components in the housing 212 from the end cover 211 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber or the like.
  • the casing 212 is a component for matching with the end cap 211 to form the internal environment of the battery cell 21 , wherein the formed internal environment can be used to accommodate the electrode assembly 213 , electrolyte (not shown in the figure) and other components.
  • the housing 212 and the end cover 211 can be independent components, and an opening can be provided on the housing 212 , and the internal environment of the battery cell 21 can be formed by making the end cover 211 cover the opening at the opening.
  • the end cover 211 and the housing 212 can also be integrated. Specifically, the end cover 211 and the housing 212 can form a common connection surface before other components are inserted into the housing.
  • the housing 212 can be in various shapes and sizes, such as cuboid, cylinder, hexagonal prism and so on. Specifically, the shape of the casing 212 may be determined according to the specific shape and size of the electrode assembly 213 .
  • the housing 212 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • the electrode assembly 213 is a part where electrochemical reaction occurs in the battery cell 21 .
  • One or more electrode assemblies 213 may be contained within the case 212 .
  • the electrode assembly 213 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and usually a separator is provided between the positive electrode sheet and the negative electrode sheet.
  • the parts of the positive electrode sheet and the negative electrode sheet with the active material constitute the main body of the electrode assembly 213 , and the parts of the positive electrode sheet and the negative electrode sheet without the active material respectively constitute tabs (not shown in the figure).
  • the positive pole tab and the negative pole tab can be located at one end of the main body together or at two ends of the main body respectively.
  • FIG. 5 is a schematic diagram of the overall structure of a box provided by an embodiment of the present application
  • Fig. 6 is a schematic top view of a box provided by an embodiment of the present application
  • FIG. 7 is a partial schematic diagram at A in FIG. 5 .
  • the present application provides a battery case 30 .
  • the box body 30 includes a frame 40 , a reinforcing beam 41 and a connecting piece 42 .
  • the frame 40 is used to form an accommodating chamber 401 .
  • the reinforcing beam 41 is disposed inside the accommodating cavity 401 .
  • the reinforcing beam 41 has a hollow cavity 411 .
  • the connecting piece 42 is used for connecting the frame 40 and the reinforcing beam 41 . Part of the connecting element 42 is accommodated in the hollow cavity 411 .
  • the Z direction in the figure is the height direction of the box body 30
  • the X direction in the figure is the width direction X of the box body 30 .
  • the frame 40 refers to the frame used to install other parts in the battery case 30 , which is provided with a plurality of through holes, which can facilitate the installation of other parts while reducing weight.
  • the material of the frame 40 needs to take into account certain rigidity and certain deformability. Such as aluminum, steel and other metals that are easier to process.
  • the frame 40 can be a one-piece structure or a separate assembly structure, and in engineering, generally, a separate assembly structure can be selected for easy installation.
  • the accommodating chamber 401 refers to the space formed between four opposite inner sides of the frame 40 , and its size depends on the height of the frame 40 along the height direction Z of the box body 30 .
  • a plurality of battery modules 20 can be arranged in the accommodation chamber 401 to improve the performance of the battery 10 .
  • the reinforcement beam 41 is formed by stamping or bending aluminum, steel and other metals. Setting the reinforcement beam 41 on the frame 40 will To increase the overall weight of the battery 10 , the setting of the hollow cavity 411 can not only effectively reduce the weight of the reinforcing beam 41 , but also be used to connect with the connecting piece 42 to better strengthen the overall rigidity of the frame 40 .
  • the depth of the connecting piece 42 entering the hollow cavity 411 can be adjusted, thereby adjusting the reinforcing beam 41 in the box body 30
  • the installation position of the reinforced beam 41 overcomes the installation accuracy problem caused by the part processing error during installation; in addition, it also effectively reduces the excessive extrusion of the connecting piece 42 by other parts in the box body 30, thereby improving the connection between the connecting piece 42 and the connecting piece 42.
  • the reliability of the connection between the frame 40 and the reinforcing beam 41 is provided.
  • the connector 42 includes a connected first fixing portion 421 and a second fixing portion 422, the first fixing portion 421 is used to connect the frame 40, and the second fixing portion 422 is used to connect The reinforcing beam 41 and at least part of the second fixing portion 422 are accommodated in the hollow cavity 411 .
  • the first fixing part 421 refers to the part on the side of the connecting piece 42 close to the frame 40, which is used to fix the connecting piece 42 on the inner side of the frame 40.
  • the specific connection method can be welding or bolt connection, etc.
  • the connecting piece 42 is generally Forming by bending can reduce the processing difficulty of the connector 42 on the one hand, and on the other hand, the integral molding process also improves the reliability of the connector 42.
  • the shape of the first fixing part 421 can be various shapes and various Dimensions such as rectangle, square or cylinder etc. Specifically, the shape of the first fixing part 421 can be determined according to the specific shape and size of the second fixing part 422 .
  • the second fixing part 422 refers to the part on the side of the connecting piece 42 close to the reinforcing beam 41, which is used to connect the reinforcing beam 41.
  • the second fixing part 422 can flexibly adjust part or all of the reinforcing beam 41 to enter the reinforcement according to the accuracy of the reinforcing beam 41 installation.
  • the hollow cavity 411 in the beam 41 prevents the reliability of the connection of the reinforcement beam 41 from being affected by the extrusion of the reinforcement beam 42 to the frame 40 .
  • the distance between the reinforcement beam 41 and the frame 40 can be adjusted in real time according to the size of the current part during installation, thereby improving the strength of the reinforcement beam. 41 for installation accuracy.
  • FIG. 8 is a schematic cross-sectional view along B-B of FIG. 6 . As shown in the figure, at least part of the second fixing portion 422 abuts against the inner wall 411a of the hollow cavity.
  • Abutment refers to a state in which two connected parts are supported by force, that is, there is an interaction force between the two connected parts.
  • the arrangement of the second fixing part 422 in the hollow cavity 411 is flexible, as long as it meets at least one side wall of the inner wall 411 a of the hollow cavity.
  • the inner wall 411a of the hollow cavity refers to the surface on the other side of the reinforcement beam 41 opposite to the surface close to the battery module 20, and its shape can be a regular plane or an irregular curved surface. Specifically, the hollow cavity The shape and size of the inner wall 411 a can be determined according to the second fixing part 422 .
  • FIG. 9 is a schematic cross-sectional view along B-B of a box provided by another embodiment of the present application.
  • the second fixing part 422 includes a first side wall 422a and a second side wall 422b opposite to each other, the first side wall 422a and the second side wall 422b are used to abut against the inner wall 411a of the hollow cavity, and
  • the connecting wall 422c is used for connecting the first side wall 422a and the second side wall 422b.
  • the first side wall 422 a and the second side wall 422 b are two side walls opposite to each other along the width direction X of the box body 30 on the second fixing portion 422 , and there is a certain gap between them.
  • the shape and size of the first side wall 422a and the second side wall 422b are consistent.
  • the shape of the first side wall 422a can be a regular rectangle, square, trapezoid or such as " A simple figure such as an L" shape, specifically, the shape and size of the first side wall 422 a can be determined by the frame 40 .
  • the connecting wall 422c is disposed between the first side wall 422a and the second side wall 422b for connecting the first side wall 422a and the second side wall 422b.
  • the number of connecting walls 422c may be one or more.
  • the connecting wall 422c can be connected with the end faces of the first side wall 422a and the second side wall 422b to form a positive "U” or an inverted "U” structure.
  • Such a design makes the connecting piece 42 squeezeable.
  • the sides of the first side wall 422 a and the second side wall 422 b are pressed to facilitate the installation of the reinforcing beam 41 . As shown in FIG.
  • the connecting wall 422c may be connected to the end faces of the first side wall 422a and the second side wall 422b to form a "mouth"-shaped structure, which has Higher deformation resistance, according to this idea, the connecting wall 422c can be arranged in the middle of the first side wall 422a and the second side wall 422b to form an "H" shape structure or a plurality of connecting walls 422c can be arranged on the first side wall 422a Different positions between the second side wall 422b and the second side wall 422b form " ⁇ " or " ⁇ "-shaped structures, etc., which are not specifically limited here.
  • FIG. 10 is a partially exploded schematic diagram of a box provided by an embodiment of the present application.
  • the connecting wall 422c is connected to one end of the first side wall 422a and the second side wall 422b, and the other ends of the first side wall 422a and the second side wall 422b are separated from each other to form a wall opposite to the connecting wall 422c. Opening 422d.
  • the connecting wall 422c can be arranged on the end faces of the first side wall 422a and the second side wall 422b in the height direction Z, and the connecting wall 422c and the first side wall 422a and the second side
  • the walls 422b may be integrally formed or connected by welding or the like.
  • an opening 422d is formed between the first side wall 422a and the second side wall 422b that are oppositely disposed.
  • the opening 422d formed by the first side wall 422a and the second side wall 422b can compress the first side wall 422a and the second side wall 422b when the reinforcing beam 41 is connected to the second fixing portion 422 of the connector 42, It is convenient for the second fixing part 422 to enter the hollow cavity 411 in the reinforcement beam 41 , thereby improving the installation efficiency of the reinforcement beam 41 .
  • the reinforcing beam 41 is provided with a through hole 412 , and at least part of the second fixing portion 422 is exposed through the through hole 412 for welding and fixing with the reinforcing beam 41 .
  • the reinforcing beam 41 may be provided with a plurality of through holes 412 , and the plurality of through holes 412 are arranged at intervals along the surface of the reinforcing beam 41 near the side of the battery module 20 .
  • the second fixing part 422 of the connector 42 partially or completely enters the hollow cavity 411 in the reinforcing beam 41, the position of the second fixing part 422 can be observed from the through hole 412, and when the second fixing part 422 reaches a suitable position, A part of the second fixing portion 422 is exposed through the through hole 412 so as to fix the connecting member 42 and the reinforcing beam 41 by welding.
  • the through hole 412 is arranged on the reinforcing beam 41, so that the reinforcing beam 41 can be welded to the second fixing part 422 exposed from the through hole 412, thereby improving the connection strength between the reinforcing beam 41 and the connecting piece 42, thereby improving the The reliability of the connection between the beam 41 and the frame 40 is enhanced.
  • the first fixing portion 421 is connected to the edge of the second fixing portion 422 and extends away from the reinforcement beam 41 .
  • the frame 40 is provided with a receiving groove 402 for receiving at least part of the first fixing part 421 .
  • the first fixing portion 421 is connected to the second fixing portion 422 , but the first fixing portion 421 is closer to the side of the frame 40 than the second fixing portion 422 .
  • the frame 40 is provided with an accommodating groove 402.
  • the accommodating groove 402 can be a regular shape such as a rectangle or a square, and can also be a shape compatible with the first fixing part 421, so as to reduce stress concentration while enhancing the reliability of partial assembly, and further Improve connection strength.
  • the contour of the receiving groove 402 is greater than or equal to the contour of the projection of the first fixing part 421 on the frame 40 to provide a space for accommodating the first fixing part 421.
  • the number of the receiving groove 402 can be one or more, and the specific depth should be combined with the frame The specific design of 40 is not limited here.
  • the first fixing part 421 extends from the edge of the second fixing part 422 close to the side of the frame 40 to the frame 40, and part or all of the first fixing part 421 is accommodated in the receiving groove 402 on the frame 40, which improves the space for the box body 30 utilization rate.
  • the first fixing part 422 can be accommodated in the space formed in the accommodating groove 402, thereby reducing the space occupied by the connector 42 in the box body 30, thereby reducing the battery life when the box body 30 is in use.
  • the risk of the module 20 colliding with the connecting piece 42 improves the reliability of the connection of the reinforcing beam 41 .
  • the present application also provides a battery 10 , which includes the box body 30 and the battery cells 21 in the above embodiments, and the box body 30 is used to accommodate the battery cells 21 .
  • the present application also provides an electric device, which includes the above-mentioned battery 10, the battery 10 is used to provide electric energy for the electric device, and the electric device can be any of the aforementioned devices using the battery 10 or system.
  • the present application also provides a battery manufacturing equipment, which includes a supply module 100 for providing battery cells 21 and a box body 30, and the box body 30 includes: a frame 40, The reinforcing beam 41 and the connecting piece 42, the frame 40 is used to form the accommodating cavity 401, the interior of the accommodating cavity 401 is provided with a reinforcing beam 41, the reinforcing beam 41 has a hollow cavity 411; the connecting piece 42 is used to connect the frame 40 and the reinforcing beam 41, Part of the connector 41 is accommodated in the hollow cavity 411 ; the assembly module is used to accommodate the battery cell 21 in the box body 30 .
  • the present application provides a box body 30 .
  • the box body 30 includes a frame 40 , a reinforcing beam 41 and a connecting piece 42 .
  • the connecting piece 42 is disposed between the frame 40 and the reinforcing beam 41 to connect them.
  • the frame 40 is provided with a receiving groove 402 , and the reinforcing beam 41 has a hollow cavity 411 and a through hole 412 . Part of the connecting element 42 is accommodated in the hollow cavity 411 .
  • the connecting piece includes a first fixing portion 421 and a second fixing portion 422 connected together.
  • the second fixing portion 422 includes a first side wall 422a, a second side wall 422b and a connecting wall 422c disposed opposite to each other.
  • the connecting wall 422c is connected to one end of the first side wall 422a and the second side wall 422b.
  • the other ends of the first side wall 422a and the second side wall 422b are separated from each other to form an opening 422d opposite to the connecting wall 422c.
  • the connecting wall 422 , the first side wall 422 a and the second side wall 422 b are at least partially abutted against the inner wall 411 a of the hollow cavity of the reinforcing beam 41 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种电池的箱体、电池、用电装置和制造设备。箱体包括：用于形成容纳腔的边框，设置于所述容纳腔的内部的加强梁，所述加强梁具有中空腔体；连接件，所述连接件用于连接所述边框和所述加强梁，部分所述连接件容纳于所述中空腔体。本申请实施例的箱体通过将部分连接件容纳于加强梁的中空腔体内，使得加强梁在安装时的可灵活调节连接件的容纳深度，从而有效提高了加强梁的安装精度。

Description

电池的箱体、电池、用电装置及电池的制造设备
本申请要求享有于2021年11月22日提交的名称为“电池的箱体、电池、用电装置及电池的制造设备”的中国专利申请202122869694.0的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池领域，特别涉及一种电池的箱体、电池、用电装置和电池的制造设备。
 背景技术
在现有的电池制造工艺中，加强梁往往通过一个和电池箱体连接的连接件固定于电池箱体。但是由于各个零件加工时存在误差，加强梁和电池箱体之间的安装精度以及连接的可靠性很难保证。因此，如何提升加强梁的安装精度和连接的可靠性就成为亟待解决的一项问题。
 技术问题
鉴于上述问题，本申请提供一种电池的箱体、电池、用电装置和电池的制造设备，能够解决加强梁的安装精度和连接可靠性问题。
 技术解决方案
第一方面，本申请提供了一种电池的箱体，包括：边框，用于形成容纳腔；加强梁，设置于所述容纳腔的内部，所述加强梁具有中空腔体；连接件，用于连接所述边框和所述加强梁，部分所述连接件容纳于所述中空腔体。
在一些实施例中，所述连接件包括相连的第一固定部和第二固定部，所述第一固定部用于连接所述边框，所述第二固定部用于连接所述加强梁，至少部分所述第二固定部容纳于所述中空腔体。通过将第二固定部全部或者部分容纳于加强梁内的中空腔体，使得加强梁在安装时和边框之间的距离可以根据当前零件的尺寸实时调整，从而提高了加强梁的安装精度。
在一些实施例中，至少部分所述第二固定部抵接于所述中空腔体的内壁。
在一些实施例中，所述第二固定部包括相对设置的第一侧壁和第二侧壁，所述第一侧壁和所述第二侧壁用于抵接所述中空腔体的内壁；以及连接壁，用于连接所述第一侧壁和所述第二侧壁。通过将第二固定部上的第一侧壁和第二侧壁和加强梁中空腔体的内壁抵接，可以进一步提升连接件与加强梁之间的连接可靠性。
在一些实施例中，所述连接壁连接于所述第一侧壁和所述第二侧壁的一端，所述第一侧壁和所述第二侧壁的另一端相互分离，以形成与所述连接壁相对的开口。通过所述第一侧壁和所述第二侧壁形成的开口，在加强梁和连接件的第二固定部连接时，可以挤压第一侧壁和第二侧壁，以方便第二固定部进入加强梁内的中空腔体，从而提高加强梁的安装效率。
在一些实施例中，所述加强梁设有通孔，至少部分所述第二固定部经由所述通孔露出，以与所述加强梁焊接固定。将通孔设置在加强梁上，使得加强梁可以和从通孔中露出的第二固定部焊接连接，从而提高加强梁和连接件之间的连接强度，进而提高了加强梁和箱体之间连接的可靠性。
在一些实施例中，所述第一固定部连接于所述第二固定部的边缘，且朝向远离所述加强梁的方向延伸。
在一些实施例中，所述边框设置有容纳槽，所述容纳槽用于容纳至少部分所述第一固定部。通过边框上的容纳槽，第一固定部可以容纳在容纳槽内空间，从而减少了连接件在箱体内的空间占用，减少了在箱体使用时电池模块碰撞到连接件的风险，从而提高了加强梁连接的可靠性能。
第二方面，本申请提供了一种电池，其包括上述实施例中的箱体和电池单体，所述箱体用于容纳所述电池单体。
第三方面，本申请提供了一种用电装置，其包括本申请第二方面提供的电池，所述电池用于提供电能。
第四方面，本申请提供了一种电池的制造设备，其包括提供模块，用于提供电池单体和箱体，所述箱体包括：边框、加强梁和连接件，所述边框用于形成容纳腔，所述容纳腔的内部设置有所述加强梁，所述加强梁具有中空腔体；所述连接件用于连接所述边框和所述加强梁，部分所述连接件容纳于所述中空腔体；装配模块，用于将所述电池单体容纳于所述箱体。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
 有益效果
本申请实施例的技术方案中，将部分加强梁和边框之间的连接件容纳于加强梁的中空腔体内。这样的设计使得加强梁在安装时，可以通过调节连接件进入中空腔体的深度，从而调节加强梁在箱体内的安装位置，克服了加强梁由于零件加工误差导致的安装精度问题；此外也有效减少了箱体内其他零部件对连接件的过度挤压，从而提高了连接件和边框、加强梁之间连接的可靠性。
 附图说明
通过阅读下文实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是本申请一实施例提供的车辆的结构示意图；
图2是本申请一实施例提供的电池的结构示意图；
图3是申请一实施例提供的一种电池模块的结构示意图；
图4是本申请一实施例提供的一种电池单体的分解结构示意图；
图5是本申请一实施例提供的一种箱体的整体结构示意图；
图6是本申请一实施例提供的一种箱体俯视示意图；
图7是图5在A处的局部示意图；
图8是图6沿B-B的剖视示意图；
图9是本申请另一实施例提供的一种箱体沿B-B的剖视示意图；
图10是本申请一实施例提供的一种箱体的局部爆炸示意图；
图11是本申请一实施例提供的一种制造设备的示意图；
具体实施方式中的附图标号如下：
1车辆，10电池，11控制器，12马达；
20电池模块，21电池单体，211端盖，211a电极端子，212壳体，213电极组件；
30箱体，301第一部分，302第二部分；
40边框，401容纳腔，402容纳槽，41加强梁，411中空腔体，411a中空腔体的内壁，412通孔，42连接件，421第一固定部，422第二固定部，422a第一侧壁，422b第二侧壁，422c连接壁，422d开口；
   100制造设备，110提供模块，120装配模块。
 本发明的实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
需要注意的是，除非另有说明，本申请实施例使用的技术术语或者科学术语应当为本申请实施例所属领域技术人员所理解的通常意义。
在本申请实施例的描述中，技术术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，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实施例的限制。
此外，技术术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；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或两个元件的相互作用关系。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实施例中的具体含义。
在本申请实施例的描述中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
目前，电动汽车的电池往往需要几十甚至上千个电池单体构成。
随着能源问题和环境问题的日益严重，具有国家补贴、清洁能源等优势的电动汽车逐渐普及，越来越多的消费者选择新能源车。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
申请人注意到，目前的电池箱体中加强梁一般通过直接插接或者外设L型连接件的方式和箱体的边框连接。以用电装置为车辆为例，当加强梁通过L型连接件和边框固定时，连接件上向电池模块方向凸出的螺栓组件会有与电池模块碰撞的风险，而这种碰撞会影响加强梁和边框之间连接的可靠性；另一种连接方式是加强梁通过插接的方式直接安装在边框安装孔内，但与此同时会伴随孔位精度控制难度大的问题，如果孔位精度不高，加强梁安装入孔就会产生一定的晃动，非常不利于后续电池单体的布置，因此如何保证安装精度以及提高连接位置的可靠性，成为亟需解决的问题。
为了解决上述技术问题，申请人研究发现，可以在设计上改变连接件的设置方式和结构，从而将加强梁更好地和箱体的边框连接。具体为提供一种电池的箱体，箱体内包括特殊设计的连接件，并将部分连接件容纳于加强梁的中空腔体内。
基于上述技术方案，使得加强梁在安装时，可以通过调节连接件进入中空腔体的深度，从而调节加强梁在箱体内的安装位置，克服了加强梁在安装时由于零件加工误差导致的安装精度问题；此外也有效减少了箱体内其他零部件对连接件的过度挤压，从而提高了连接件和边框、加强梁之间连接的可靠性。
本申请提供一种电池的箱体，以及包括这种箱体的电池和使用该电池的用电装置。这种箱体适用于任何电池，例如电池模块和电池包，或者一次电池和二次电池，例如，二次电池包括镍氢电池、镍镉电池、铅酸（或铅蓄）电池、锂离子电池、钠离子电池、聚合物电池等。这种电池适用于各种使用电池的用电装置，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、电动车辆、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；电池用于为上述用电装置提供电能。
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电池和用电装置，还可以适用于所有包括箱体的电池以及使用电池的用电装置，但为描述简洁，下述实施例均以电动车辆为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆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的内部设置有电池10，电池10可以设置在车辆1的底部或头部或尾部。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。车辆1还可以包括控制器11和马达12，控制器11用来控制电池10为马达12供电，例如，用于车辆1的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池10不仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，代替或部分地代替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21，电池单体21是指组成电池模块或电池包的最小单元。多个电池单体21可经由电极端子而被串联和/或并联在一起以应用于各种应用场合。本申请中所提到的电池包括电池模块或电池包。其中，多个电池单体21之间可以串联或并联或混联，混联是指串联和并联的混合。电池10也可以称为电池包。本申请的实施例中多个电池单体21可以直接组成电池包，也可以先组成电池模块20，电池模块20再组成电池包。
图2示出了本申请一实施例的电池10的结构示意图。图2中，电池10可以包括多个电池模块20和箱体30，多个电池模块20容纳于箱体30内部。箱体30用于容纳电池单体21或电池模块20，以避免液体或其他异物影响电池单体21的充电或放电。箱体30可以是单独的长方体或者圆柱体或球体等简单立体结构，也可以是由长方体或者圆柱体或球体等简单立体结构组合而成的复杂立体结构，本申请实施例对此并不限定。箱体30的材质可以是如铝合金、铁合金等合金材料，也可以是如聚碳酸酯、聚异氰脲酸酯泡沫塑料等高分子材料，或者是如玻璃纤维加环氧树脂的复合材料，本申请实施例对此也并不限定。
在一些实施例中，箱体30可以包括第一部分301和第二部分302，第一部分301与第二部分302相互盖合，第一部分301和第二部分302共同限定出用于容纳电池单体21的空间。第二部分302可以为一端开口的空心结构，第一部分301可以为板状结构，第一部分301盖合于第二部分302的开口侧，以使第一部分301与第二部分302共同限定出容纳电池单体21的空间；第一部分301和第二部分302也可以是均为一侧开口的空心结构，第一部分301的开口侧盖合于第二部分302的开口侧。
图3示出了本申请一实施例的电池模块20的结构示意图。图3中，电池模块20可以包括多个电池单体21，多个电池单体21可以先串联或并联或混联组成电池模块20，多个电池模块20再串联或并联或混联组成电池10。本申请中，电池单体21可以包括锂离子电池、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21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21一般按封装的方式分成三种：柱形电池单体21、方体方形电池单体21和软包电池单体21，本申请实施例对此也不限定。但为描述简洁，下述实施例均以方体方形电池单体21为例进行说明。
图4为本申请一些实施例提供的电池单体21的分解结构示意图。电池单体21是指组成电池的最小单元。如图4，电池单体21包括有端盖211、壳体212和电极组件213。
端盖211是指盖合于壳体212的开口处以将电池单体21的内部环境隔绝于外部环境的部件。可选地，端盖211的形状可以与壳体212的形状相适应以配合壳体212。可选地，端盖211可以由具有一定硬度和强度的材质（如铝合金）制成，这样，端盖211在受挤压碰撞时就不易发生形变，使电池单体21能够具备更高的结构强度，安全性能也可以有所提高。端盖211上可以设置有如电极端子211a等的功能性部件。电极端子211a可以用于与电极组件213电连接，以用于输出或输入电池单体21的电能。在一些实施例中，端盖211上还可以设置有用于在电池单体21的内部压力或温度达到阈值时泄放内部压力的泄压机构。在一些实施例中，在端盖211的内侧还可以设置有绝缘件，绝缘件可以用于隔离壳体212内的电连接部件与端盖211，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
壳体212是用于配合端盖211以形成电池单体21的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件213、电解液（在图中未示出）以及其他部件。壳体212和端盖211可以是独立的部件，可以于壳体212上设置开口，通过在开口处使端盖211盖合开口以形成电池单体21的内部环境。可选地，也可以使端盖211和壳体212一体化，具体地，端盖211和壳体212可以在其他部件入壳前先形成一个共同的连接面，当需要封装壳体212的内部时，再使端盖211盖合壳体212。壳体212可以是多种形状和多种尺寸的，例如长方体形、圆柱体形、六棱柱形等。具体地，壳体212的形状可以根据电极组件213的具体形状和尺寸大小来确定。壳体212的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。
电极组件213是电池单体21中发生电化学反应的部件。壳体212内可以包含一个或更多个电极组件213。电极组件213主要由正极片和负极片卷绕或层叠放置形成，并且通常在正极片与负极片之间设有隔膜。正极片和负极片具有活性物质的部分构成电极组件213的主体部，正极片和负极片不具有活性物质的部分各自构成极耳（在图中未示出）。正极极耳和负极极耳可以共同位于主体部的一端或是分别位于主体部的两端。在电池单体21的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳连接电极端子211a以形成电流回路。
根据本申请的一些实施例，参照图5至图7，图5为本申请一实施例提供的一种箱体的整体结构示意图，图6是本申请一实施例提供的一种箱体俯视示意图，图7是图5在A处的局部示意图。本申请提供了一种电池的箱体30。箱体30包括边框40、加强梁41和连接件42。边框40用于形成容纳腔401。加强梁41设置于容纳腔401的内部。加强梁41具有中空腔体411。连接件42用于连接边框40和加强梁41。部分连接件42容纳于中空腔体411。
如图中所示，图中Z方向为箱体30的高度方向，图中X方向为箱体30的宽度方向X。
边框40是指电池的箱体30中用来安装其他零件的框架，其上设有多个通孔，可以在减重的同时便于其他零件的安装。为适应电池内部的使用环境和轻量化需要，边框40的材料需要兼顾一定的刚性和一定的可变形性能。例如铝、钢等较容易加工的金属。边框40可以是一体式结构或者分体组装的结构，工程上一般可以选择分体组装的结构以便于安装。
容纳腔401是指边框40上4个相对的内侧面之间形成的空间，它的大小取决于边框40沿箱体30高度方向Z上的高度的大小。容纳腔401内可以用于设置多个电池模块20以提升电池10的性能。
“加强梁41具有中空腔体411”是指加强梁41的内表面形成一定的空间，通常加强梁41是通过将铝、钢等金属冲压或者弯折形成，在边框40上设置加强梁41会增加电池10的整体重量，中空腔体411的设置不仅可以有效减轻加强梁41的重量，还可以用于和连接件42进行连接，以更好加强边框40的整体刚性。
“部分连接件42容纳于中空腔体411”是指连接件42有一部分会进入加强梁41内的中空腔体411中，连接件42设置于中空腔体411的部分可以对加强梁41进行一定的支撑。
通过将部分连接件42容纳于加强梁41的中空腔体411内，使得加强梁41在安装时，可以通过调节连接件42进入中空腔体411的深度，从而调节加强梁41在箱体30内的安装位置，克服了加强梁41在安装时由于零件加工误差导致的安装精度问题；此外也有效减少了箱体30内其他零部件对连接件42的过度挤压，从而提高了连接件42和边框40、加强梁41之间连接的可靠性。
根据本申请的一些实施例，继续参考图7，连接件42包括相连的第一固定部421和第二固定部422，第一固定部421用于连接边框40，第二固定部422用于连接加强梁41，至少部分第二固定部422容纳于中空腔体411。
第一固定部421是指连接件42上靠近边框40一侧的部件，用于将连接件42固定在边框40的内侧面上，具体的连接方式可以是焊接或螺栓连接等，连接件42一般通过弯折的方式成型，一方面可以降低连接件42的加工难度，另一方面一体成型的工艺也提升了连接件42的可靠性,第一固定部421的形状可以是多种形状和多种尺寸的，例如长方形、正方形或圆柱形等。具体地，第一固定部421的形状可以根据第二固定部422的具体形状和尺寸大小来确定。
第二固定部422是指连接件42上靠近加强梁41一侧的部件，用于连接加强梁41，第二固定部422可以根据加强梁41安装时的精度需要，灵活调节部分或者全部进入加强梁41内的中空腔体411，从而避免加强梁42对边框40的挤压影响加强梁41连接的可靠性。
通过将第二固定部422全部或者部分容纳于加强梁41内的中空腔体411，使得加强梁41在安装时和边框40之间的距离可以根据当前零件的尺寸实时调整，从而提高了加强梁41的安装精度。
根据本申请的一些实施例，参照图8，图8是图6沿B-B的剖视示意图。如图中所示，至少部分第二固定部422抵接于中空腔体的内壁411a。
抵接是指相连接的两部件之间用力对撑，即相连接的两部件之间存在相互作用力的一种状态。第二固定部422在中空腔体411内的布置方式灵活，只要满足与中空腔体的内壁411a的至少一个侧壁抵接即可。
“中空腔体的内壁411a”是指加强梁41上与靠近电池模块20一侧的表面相对的另一侧表面，其形状可以是规则的平面或是不规则的曲面，具体地，中空腔体的内壁411a的形状和尺寸可以根据第二固定部422来确定。
根据本申请的一些实施例，参照图8和图9，图9是本申请另一实施例提供的一种箱体沿B-B的剖视示意图。如图中所示，第二固定部422包括相对设置的第一侧壁422a和第二侧壁422b，第一侧壁422a和第二侧壁422b用于抵接中空腔体的内壁411a，以及连接壁422c，用于连接第一侧壁422a和第二侧壁422b。
第一侧壁422a和第二侧壁422b是第二固定部422上沿箱体30的宽度方向X相对设置的两个侧壁，它们之间有一定的间隙。一般来说，第一侧壁422a和第二侧壁422b的形状和尺寸大小一致，以第一侧壁422a为例，第一侧壁422a的形状可以是规则的长方形、正方形、梯形或者如“L”形等的简单图形，具体地，第一侧壁422a的形状和尺寸可以由边框40来确定。
连接壁422c设置在第一侧壁422a和第二侧壁422b之间，用于将第一侧壁422a和第二侧壁422b连接。连接壁422c的数量可以是一个也可以是多个。如图8所示，连接壁422c可以与第一侧壁422a和第二侧壁422b一端的端面相连，以形成正“U”或者倒“U”的结构，这样的设计使得连接件42可以挤压第一侧壁422a和第二侧壁422b的侧面以便于加强梁41的安装。如图9所示，本申请的另一实施例中，连接壁422c可以与第一侧壁422a和第二侧壁422b两端的端面都相连，以形成“口”字形的结构，这种结构具有更高的抗形变能力，按照这种思路，连接壁422c可以设置在第一侧壁422a和第二侧壁422b的中部形成“H”形结构或者多个连接壁422c设置在第一侧壁422a和第二侧壁422b之间的不同位置形成“日或“目”字形结构等，在此不做特殊限定。
通过将第二固定部422上的第一侧壁422a和第二侧壁422b和加强梁41上中空腔体的内壁411a抵接，可以进一步提升加强梁41和连接件42连接的可靠性。
根据本申请的一些实施例，请参照图10，图10是本申请一实施例提供的一种箱体的局部爆炸示意图。如图中所示，连接壁422c连接于第一侧壁422a和第二侧壁422b的一端，第一侧壁422a和第二侧壁422b的另一端相互分离，以形成与连接壁422c相对的开口422d。
当连接壁422c的数量只有一个时，可以将连接壁422c设置在第一侧壁422a和第二侧壁422b在高度方向Z上的端面上，连接壁422c和第一侧壁422a和第二侧壁422b之间可以是一体成型或者通过焊接等方式连接。
在和连接壁422c相对的另一端，相对设置的第一侧壁422a和第二侧壁422b之间形成开口422d。
通过第一侧壁422a和第二侧壁422b形成的开口422d，使得在加强梁41和连接件42的第二固定部422连接时，可以挤压第一侧壁422a和第二侧壁422b，以方便第二固定部422进入加强梁41内的中空腔体411，从而提高了加强梁41的安装效率。
根据本申请的一些实施例，请参照图7，加强梁41设有通孔412，至少部分第二固定部422经由通孔412露出，以与加强梁41焊接固定。
加强梁41上可以设有多个通孔412，多个通孔412沿着加强梁41上靠近电池模块20一侧的表面分开间隔设置。在连接件42的第二固定部422部分或者全部进入加强梁41内的中空腔体411时，可以从通孔412观察第二固定部422的位置，在第二固定部422到达合适位置时，第二固定部422的一部分通过通孔412暴露出来，以便于通过焊接将连接件42与加强梁41固定。
将通孔412设置在加强梁41上，使得加强梁41可以和从通孔412中露出的第二固定部422焊接连接，从而提高加强梁41和连接件42之间的连接强度，进而提高了加强梁41和边框40之间连接的可靠性。
根据本申请的一些实施例，请继续参照图10，第一固定部421连接于第二固定部422的边缘，且朝向远离加强梁41的方向延伸。可选地，边框40上设置有容纳槽402，容纳槽402用于容纳至少部分第一固定部421。
第一固定部421和第二固定部422相连，但第一固定部421相对第二固定部422更靠近边框40的一侧。边框40上设有容纳槽402，容纳槽402可以是长方形、正方形等规则形状，也可以是和第一固定部421相适配的形状，在加强局部装配的可靠性的同时减少应力集中，进而提高连接强度。容纳槽402的轮廓大于或等于第一固定部421在边框40上投影的轮廓，以提供容纳第一固定部421的空间，容纳槽402的数量可以是一个或者多个，具体的深度要结合边框40的具体设计，这里不做限制。第一固定部421从第二固定部422靠近边框40一侧的边缘向边框40延伸，且部分或全部第一固定部421容纳于边框40上的容纳槽402，提高了对箱体30的空间利用率。
通过边框40上的容纳槽402，第一固定部422可以容纳在容纳槽402内形成的空间，从而减少了连接件42在箱体30内的空间占用，从而减少了在箱体30使用时电池模块20碰撞到连接件42的风险，进而提高了加强梁41连接的可靠性。
根据本申请的一些实施例，本申请还提供了一种电池10，其包括上述实施例中的箱体30和电池单体21，箱体30用于容纳电池单体21。
根据本申请的一些实施例，本申请还提供了一种用电装置，其包括本上述电池10，电池10用于为用电装置提供电能，用电装置可以是前述任一应用电池10的装置或系统。
根据本申请的一些实施例，参照图11，本申请还提供了一种电池的制造设备，其包括提供模块100，用于提供电池单体21和箱体30，箱体30包括：边框40、加强梁41和连接件42，边框40用于形成容纳腔401，容纳腔401的内部设置有加强梁41，加强梁41具有中空腔体411；连接件42用于连接边框40和加强梁41，部分连接件41容纳于中空腔体411；装配模块，用于将电池单体21容纳于箱体30。
根据本申请的一些实施例，参见图5至图8、图10，本申请提供了一种箱体30。箱体30包括边框40、加强梁41以及连接件42。连接件42设置于边框40和加强梁41之间以连接两者。边框40上设置有容纳槽402，加强梁41具有中空腔体411和通孔412。部分连接件42容纳于中空腔体411。连接件包括相连的第一固定部421和第二固定部422。至少部分第一固定部421容纳于边框40上的容纳槽402以和边框40连接。至少部分第二固定部422经由加强梁41上的通孔412露出，以与加强梁41焊接固定。第二固定部422包括相对设置的第一侧壁422a和第二侧壁422b以及连接壁422c。连接壁422c连接于第一侧壁422a和第二侧壁422b的一端。第一侧壁422a和第二侧壁422b的另一端相互分离，以形成与连接壁422c相对的开口422d。连接壁422、第一侧壁422a和第二侧壁422b至少部分抵接于加强梁41的中空腔体内壁411a。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。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 (11)

  1. 一种电池的箱体，其中，包括：
    边框，用于形成容纳腔；
    加强梁，设置于所述容纳腔的内部，所述加强梁具有中空腔体；
    连接件，用于连接所述边框和所述加强梁，部分所述连接件容纳于所述中空腔体。
  2. 根据权利要求1所述的箱体，其中，所述连接件包括相连的第一固定部和第二固定部，所述第一固定部用于连接所述边框，所述第二固定部用于连接所述加强梁，至少部分所述第二固定部容纳于所述中空腔体。
  3. 根据权利要求2所述的箱体，其中，至少部分所述第二固定部抵接于所述中空腔体的内壁。
  4. 根据权利要求3所述的箱体，其中，所述第二固定部包括相对设置的第一侧壁和第二侧壁，所述第一侧壁和所述第二侧壁用于抵接所述中空腔体的内壁；以及
    连接壁，用于连接所述第一侧壁和所述第二侧壁。
  5. 根据权利要求4所述的箱体，其中，所述连接壁连接于所述第一侧壁和所述第二侧壁的一端，所述第一侧壁和所述第二侧壁的另一端相互分离，以形成与所述连接壁相对的开口。
  6. 根据权利要求2所述的箱体，其中，所述加强梁设有通孔，至少部分所述第二固定部经由所述通孔露出，以与所述加强梁焊接固定。
  7. 根据权利要求2-6中任一项所述的箱体，其中，所述第一固定部连接于所述第二固定部的边缘，且朝向远离所述加强梁的方向延伸。
  8. 根据权利要求2-6中任一项所述的箱体，其中，所述边框上设置有容纳槽，所述容纳槽用于容纳至少部分所述第一固定部。
  9. 一种电池，其中，包括：
    电池单体；
    根据权利要求1-8中任一项所述的箱体，所述箱体用于容纳所述电池单体。
  10. 一种用电装置，其中，包括权利要求9所述的电池，所述电池用于提供电能。
  11. 一种电池的制造设备，其中，包括：
    提供模块，用于提供电池单体和箱体，所述箱体包括：
    边框，用于形成容纳腔；
    加强梁，设置于所述容纳腔的内部，所述加强梁具有中空腔体；
    连接件，用于连接所述边框和所述加强梁，部分所述连接件容纳于所述中空腔体；
    装配模块，用于将所述电池单体容纳于所述箱体。
PCT/CN2022/129086 2021-11-22 2022-11-01 电池的箱体、电池、用电装置及电池的制造设备 WO2023088089A1 (zh)

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