WO2023130665A1 - 电池和用电装置 - Google Patents

电池和用电装置 Download PDF

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Publication number
WO2023130665A1
WO2023130665A1 PCT/CN2022/097480 CN2022097480W WO2023130665A1 WO 2023130665 A1 WO2023130665 A1 WO 2023130665A1 CN 2022097480 W CN2022097480 W CN 2022097480W WO 2023130665 A1 WO2023130665 A1 WO 2023130665A1
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WO
WIPO (PCT)
Prior art keywords
battery
plate
connection
groove
protrusion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/097480
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English (en)
French (fr)
Inventor
沈升
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to ES22918121T priority Critical patent/ES3063052T3/es
Priority to EP22918121.9A priority patent/EP4276994B1/en
Publication of WO2023130665A1 publication Critical patent/WO2023130665A1/zh
Priority to US18/467,416 priority patent/US12614805B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 technical field of energy storage devices, in particular to a battery and an electrical device.
  • the embodiment of the present application provides a battery and an electrical device, by providing a locking protrusion and a locking groove on the side plate to limit the displacement between adjacent battery modules and improve the safety performance of the battery.
  • the present application provides a battery, the battery includes a plurality of battery modules arranged in sequence along the first direction; the battery module includes a battery cell and side plates arranged on both sides of the battery cell along the first direction; two adjacent The side plates of the battery module are connected to each other. Among the two connected side plates, one side plate is provided with an engaging protrusion, and the other side plate has an engaging groove, and the engaging protrusion is engaged with the engaging groove. to constrain each other from moving in a second direction, the second direction being perpendicular to the first direction.
  • the engaging groove and the engaging protrusion on the side plate adjacent battery modules can be engaged and connected through the engaging protrusion and the engaging groove on the side plate, and the engaging and connecting The protrusion and the engaging groove limit the movement of the adjacent battery module along the second direction; compared with the connection method of welding or bonding, the side plate in this embodiment is deformed even under the action of the expansion force of the battery cell
  • the engaging projections and engaging grooves of the engaging connection can also ensure the connection of adjacent battery modules, thereby preventing relative displacement of the battery modules after they are separated, and improving battery safety.
  • the side plates connected to each other are provided with a plurality of engaging protrusions, and engaging grooves are defined between the engaging protrusions on the side plates.
  • a side plate is provided with a locking protrusion and a locking groove at the same time, and a plurality of locking protrusions are provided to increase the contact area between the connected side plates and improve the stability of the connection of adjacent battery modules.
  • the plurality of engaging protrusions of the side plate extend at least along two different directions.
  • the engaging protrusions extending in different directions can limit the movement of adjacent battery modules in different directions, thereby ensuring that the battery modules will not be displaced in multiple directions.
  • the battery further includes an adhesive glue disposed between two adjacent battery modules, and the side plates of the two adjacent battery modules are bonded by the adhesive glue, so that the side plates are not only connected by the engaging protrusions and The snap-fit groove realizes the snap-fit connection, and also realizes the bonding through the adhesive glue, so as to improve the stability of the connection between adjacent battery modules.
  • the plurality of battery cells of the battery module are arranged side by side along the third direction
  • the battery module further includes end plates disposed opposite to each other along the third direction, and the end plates and side plates are connected end-to-end and arranged around the plurality of battery cells
  • the battery also includes connectors, the opposite ends of which are respectively connected to the end plates of two adjacent battery modules, so as to limit the relative displacement of the adjacent end plates, and the first direction is perpendicular to the third direction.
  • the adjacent battery modules are not only engaged and connected through the engaging protrusions and engaging grooves provided on the side plates, but also limit the relative displacement of adjacent end plates through the connectors, thereby improving the distance between adjacent battery modules. the stability of the connection.
  • one is provided with a connecting protrusion
  • the other is provided with a connecting groove adapted to the connecting protrusion.
  • the connecting piece and the end plate are engaged and connected by the connecting protrusion and the connecting groove, which facilitates the assembly of the connecting piece and the end plate.
  • the end plate has a connecting groove
  • the connecting piece includes a first connecting portion and connecting protrusions connected to opposite sides of the first connecting portion
  • the connecting protrusions are inserted into the connecting grooves
  • the end plate is bolted to the connecting protrusions.
  • the connection between the end plate and the connecting piece is not only realized through the connection groove and the connecting protrusion, but also through the bolt connection through the connecting protrusion, so as to improve the connection strength between the end plate and the connecting piece.
  • the end plate includes a first side wall and a second side wall that are spaced apart from each other along the third direction, a connection groove is formed between the first side wall and the second side wall, and the connection protrusion abuts against the first side wall. between the side wall and the second side wall. Since the connecting protrusion abuts against the first side wall, the bolts that are convenient to be screwed in are fastened to connect the protrusion and the first side wall.
  • the end plate further includes a limiting protrusion protruding from the first side wall to the second side wall, and the first connecting portion has a limiting groove cooperating with the limiting protrusion.
  • the snap connection between the end plate and the connecting piece is not only realized through the connecting groove and the connecting protrusion, but also relative positioning is realized through the limiting protrusion and the limiting groove.
  • the connector includes a second connecting portion and a first fixing portion connected to opposite sides of the second connecting portion, the second connecting portion has a connecting groove, and the connecting protrusions of adjacent end plates are inserted into the connecting groove, and the two The first fixing parts are arranged opposite to the connecting protrusions of the adjacent end plates along the third direction, and the first fixing parts are connected with the connecting protrusions by bolts.
  • the end plate and the connecting piece are engaged and connected through the connecting protrusion and the connecting groove, and on the other hand, they are connected through the first fixing portion and the connecting protrusion with bolts, so as to improve the stability of the connection between the end plate and the connecting piece.
  • the connecting member includes a first connecting plate, a second connecting plate bent and extended from opposite ends of the first connecting plate, and a second fixing portion bent and extended from the second connecting plate, the first connecting plate
  • the plate and the two second connecting plates form a connecting groove, and the connecting protrusions of two adjacent end plates are engaged in the connecting groove together, and the second fixing part is connected with the end plates by bolts.
  • the end plate and the connecting piece are engaged and connected by the connecting protrusion and the connecting groove, and on the other hand, they are connected by bolts of the second fixing part, so as to improve the stability of the connection between the end plate and the connecting piece.
  • the connecting piece includes a first sub-piece and a second sub-piece
  • the first sub-piece includes a bent portion and two opposite through portions
  • the end plate has a receiving groove communicated along the fourth direction
  • the two One end of the penetrating portion is connected to the bending portion, and the other end respectively passes through the receiving grooves of the adjacent end plates and is connected to the second component by bolts
  • the fourth direction is perpendicular to the third direction.
  • the first sub-piece can limit the movement of the two end plates along the third direction
  • the bent portion and the second sub-piece can limit the movement between the end plates and the connecting piece.
  • the penetrating portion passes through the receiving groove arranged along the fourth direction, and the end plate does not need to be provided with an installation hole arranged along the third direction, so that the end plate has higher strength.
  • the end plate further includes a receiving chamber communicated with the receiving groove, the bent portion is accommodated in the receiving chamber, and an end of the bent portion close to the second sub-component abuts against a wall of the receiving chamber.
  • the storage cavity is provided to accommodate the bent part, so as to prevent the bent part from interfering with the arrangement of other components in the battery, and improve the compactness of the battery layout.
  • the present application provides an electrical device, including the battery in any embodiment of the first aspect, and the battery is used to provide electrical energy.
  • FIG. 1 is a schematic structural view of a vehicle in some embodiments of the present application.
  • FIG. 2 is a schematic diagram of an exploded structure of a battery in some embodiments of the present application.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery cell in some embodiments of the present application.
  • FIG. 4 is a schematic diagram of a three-dimensional structure of a battery in some embodiments of the present application.
  • FIG. 5 is a schematic diagram of a disassembled structure of a battery in some embodiments of the present application.
  • Fig. 6 is a schematic diagram of a partial three-dimensional structure of a side panel in some embodiments of the present application.
  • Fig. 7 is a schematic diagram of a partial three-dimensional structure of side panels in other embodiments of the present application.
  • Fig. 8 is a schematic diagram of a partial three-dimensional structure of a side panel in some other embodiments of the present application.
  • Fig. 9 is a schematic diagram of a partial three-dimensional structure of a side panel in some further embodiments of the present application.
  • Fig. 10 is a schematic plan view of the side panels of some other embodiments of the present application.
  • Fig. 11 is a schematic diagram of a partial three-dimensional structure of side panels in some other embodiments of the present application.
  • Fig. 12 is a schematic perspective view of the three-dimensional structure of end plates and connectors in some embodiments of the present application.
  • Fig. 13 is a schematic diagram of an enlarged structure of part A shown in Fig. 12;
  • Fig. 14 is a schematic diagram of the disassembled structure of end plates and connectors in some embodiments of the present application.
  • Fig. 15 is a schematic diagram of an enlarged structure of part B shown in Fig. 14;
  • Fig. 16 is a schematic diagram of a partial assembly structure of end plates and connectors in some embodiments of the present application.
  • Fig. 17 is a schematic diagram of a partially disassembled structure of end plates and connectors in some embodiments of the present application.
  • Fig. 18 is a schematic diagram of a partial assembly structure of end plates and connectors in other embodiments of the present application.
  • Fig. 19 is a partially disassembled structural schematic diagram of end plates and connectors in other embodiments of the present application.
  • Fig. 20 is a partially disassembled structural schematic diagram of end plates and connectors in some other embodiments of the present application.
  • Fig. 21 is a schematic diagram of a partial assembly structure of end plates and connectors in some other embodiments of the present application.
  • Fig. 22 is a partially disassembled structural schematic diagram of end plates and connectors in some other embodiments of the present application.
  • Vehicle 1000 battery 100; controller 200; motor 300; battery module 10; upper cover 20; lower cover 30;
  • battery cell 1 end cover 11; electrode terminal 11a; case 12; first side 121; second side 122; electrode assembly 13; Groove 22; main body 23; connecting part 24; end plate 3; first side wall 31; second side wall 32; ;Accommodating chamber 38;
  • the battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc.
  • the embodiment of the present application does not limit this.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to packaging methods: cylindrical battery cells, square square battery cells and pouch battery cells, which are not limited in this embodiment 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 battery mentioned in this application may include a battery module or a battery pack, and the like.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid 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.
  • a battery cell works primarily by moving metal ions between the positive and negative plates.
  • 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 not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer.
  • the current collector coated with the positive electrode active material layer is stacked 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 cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes 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 is stacked as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the material of the isolation film may be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • a plurality of battery cells are stacked on each other to form a battery module, and then the plurality of battery modules are stacked on each other into the casing.
  • Multiple battery modules are usually glued or welded together through the end plates of the battery modules.
  • the battery cells will expand as the usage time increases, and the end plates will deform under the action of the expansion force of the battery cells, making adjacent The end plates are separated, the connection between the battery modules fails, and the battery modules with failed connections are prone to displacement under the action of external force, thereby causing potential safety hazards.
  • the battery cells disclosed in the embodiments of the present application can be used, but not limited to, in electric devices such as vehicles, ships or aircrafts.
  • the power supply system composed of the battery cells and batteries disclosed in this application can be used to form the electric device. In this way, the expansion force of the battery cells can be avoided, resulting in failure of the connection between the battery modules, and the safety of the battery can be improved.
  • the embodiment of the present application provides an electric device using a battery as a power source.
  • the electric device can be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like.
  • electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric boat toys, electric airplane toys, etc.
  • spacecraft may include airplanes, rockets, space shuttles, spaceships, etc.
  • a vehicle 1000 as an electric device according to an embodiment of the present application is taken as an example for description.
  • FIG. 1 is a schematic structural diagram of a vehicle provided by some embodiments of the present application.
  • the vehicle 1000 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 1000 is provided with a battery 100 , and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000 .
  • the battery 100 can be used for power supply of the vehicle 1000 , for example, the battery 100 can be used as an operating power source of the vehicle 1000 .
  • the vehicle 1000 may further include a controller 200 and a motor 300 , the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, for starting, navigating and running the vehicle 1000 .
  • the battery 100 can not only be used as an operating power source for the vehicle 1000 , but can also be used as a driving power source for the vehicle 1000 , replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1000 .
  • FIG. 2 is a schematic diagram of an exploded structure of a battery provided in some embodiments of the present application.
  • the battery 100 includes a case and battery cells (not shown).
  • the box body may include an upper cover 20 and a lower cover 30 , the upper cover 20 and the lower cover 30 cover each other, and the upper cover 20 and the lower cover 30 together define a storage space for accommodating the battery cells.
  • the lower cover 30 can be a hollow structure with an open end, and the upper cover 20 can be a plate-shaped structure, and the upper cover 20 is closed on the opening side of the lower cover 30, so that the upper cover 20 and the lower cover 30 jointly define an accommodation space; the upper cover 20 and the lower cover 30 can also be hollow structures with one side opening, and the opening side of the upper cover 20 is closed to the opening side of the lower cover 30 .
  • the box body formed by the upper cover 20 and the lower cover 30 may be in various shapes, such as a cylinder, a cuboid, and the like.
  • the battery 100 there may be multiple battery cells, and the multiple battery cells may be connected in series, in parallel or in parallel.
  • the mixed connection means that the multiple battery cells are connected in series and in parallel.
  • a plurality of battery cells can be directly connected in series or in parallel or mixed together, and then the whole body composed of a plurality of battery cells can be accommodated in the box; of course, the battery 100 can also be a plurality of battery cells first connected in series or in parallel or
  • the battery modules 10 are formed by series connection, and multiple battery modules 10 are connected in series or in parallel or in series to form a whole and accommodated in the box.
  • the battery 100 may also include other structures, for example, the battery 100 may also include a current flow component (not shown in the figure) for realizing electrical connection between a plurality of battery cells.
  • each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, but not limited thereto.
  • the battery cells can be in the form of cylinders, flat bodies, cuboids or other shapes.
  • FIG. 3 is a schematic diagram of an exploded structure of a battery cell provided in some embodiments of the present application.
  • a battery cell 1 refers to the smallest unit that makes up a battery. As shown in FIG. 3 , the battery cell 1 includes an end cap 11 , a casing 12 , an electrode assembly 13 and other functional components.
  • the end cap 11 refers to a component that covers the opening of the casing 12 to isolate the internal environment of the battery cell 1 from the external environment.
  • the shape of the end cap 11 can be adapted to the shape of the housing 12 to fit the housing 12 .
  • the end cap 11 can be made of a material (such as aluminum alloy) with a certain hardness and strength, so that the end cap 11 is not easily deformed when being squeezed and collided, so that the battery cell 1 can have a higher Structural strength and safety performance can also be improved.
  • Functional components such as electrode terminals 11 a may be provided on the end cap 11 .
  • the electrode terminal 11 a can be used for electrical connection with the electrode assembly 13 for outputting or inputting electric energy of the battery cell 1 .
  • the end cover 11 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 1 reaches a threshold value.
  • the material of the end cap 11 can also be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in this embodiment of the present application.
  • an insulator can be provided inside the end cover 11 , and the insulator can be used to isolate the electrical connection components in the housing 12 from the end cover 11 to reduce the risk of short circuit.
  • the insulating member may be plastic, rubber or the like.
  • the casing 12 is a component used to cooperate with the end cap 11 to form the internal environment of the battery cell 1 , wherein the formed internal environment can be used to accommodate the electrode assembly 13 , electrolyte and other components.
  • the shell 12 and the end cover 11 may be independent components, and an opening may be provided on the shell 12 , and the internal environment of the battery cell 1 is formed by covering the opening with the end cover 11 .
  • the end cover 11 and the shell 12 can also be integrated. Specifically, the end cover 11 and the shell 12 can form a common connection surface before other components are inserted into the shell. When the inside of the shell 12 needs to be encapsulated, then Make the end cover 11 cover the shell 12 .
  • the housing 12 can be in various shapes and sizes, such as cuboid, cylinder, hexagonal prism and so on. Specifically, the shape of the shell 12 can be determined according to the specific shape and size of the electrode assembly 13 .
  • the housing 12 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 13 is a part where the electrochemical reaction occurs in the battery cell 1 .
  • One or more electrode assemblies 13 may be contained within the housing 12 .
  • the electrode assembly 13 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet.
  • the part of the positive electrode sheet and the negative electrode sheet with the active material constitutes the main body of the electrode assembly 13 , and the parts of the positive electrode sheet and the negative electrode sheet without the active material respectively constitute tabs.
  • the positive pole tab and the negative pole tab can be located at one end of the main body together or at both ends of the main body. During the charging and discharging process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminal 11a to form a current loop.
  • the present application provides a battery 100, which includes a plurality of battery modules 10 arranged in sequence along a first direction X.
  • the battery module 10 includes a battery cell 1 and side plates 2 disposed on both sides of the battery cell 1 along a first direction X.
  • the side plates 2 of two adjacent battery modules 10 are connected to each other, and among the two connected side plates 2, one side plate 2 is provided with an engaging protrusion 21, and the other side plate 2 has an engaging groove 22 for engaging
  • the protrusion 21 engages with the engaging groove 22 to limit their movement in the second direction, which is perpendicular to the first direction X. As shown in FIG.
  • the side plate 2 cooperates with other plates or brackets in the battery 100 so that the positions of the side plate 2 and the battery cells 1 are relatively fixed.
  • the battery module 10 further includes opposite end plates 3 , and the two end plates 3 and the two side plates 2 are sequentially connected end to end to form a frame structure surrounding a plurality of battery cells 1 .
  • the battery 100 includes at least two battery modules 10 , and the side plates 2 of two adjacent battery modules 10 are engaged with each other, so that the battery modules 10 are sequentially connected along the first direction X.
  • the battery cell 1 includes an end cover 11 and a casing 12, the end cover 11 is provided with an electrode terminal 11a, the casing 12 includes a bottom surface opposite to the end cover 11, a first side 121 opposite to it, and a second side 122 opposite to it, The area of the first side 121 may be larger than that of the second side 122 , and the first side 121 between adjacent battery cells 1 is oppositely arranged.
  • the side panel 2 is opposite to the second side 122 . For example, in the embodiment shown in FIG.
  • a plurality of battery cells 1 are sequentially arranged along the width direction of the battery cells 1, the first direction X is the length direction of the battery cells 1, and the side plate 2 and the second side 122 are arranged along the One direction X is oppositely arranged, so that the side plate 2 can restrict the movement of the battery cells 1 along the first direction X.
  • the side plate 2 is made of a material with a certain strength, so that the side plate 2 can protect the battery cell 1 from being easily deformed when it is squeezed and collided, so that the battery cell 1 can have higher structural strength and safety performance. has seen an increase.
  • the length of the side plate 2 along the length direction of the battery module 10 can be increased according to the number of battery cells 1 in the battery module 10, and the width of the side plate 2 Adapt to the height of the battery cells 1 , so that the side plate 2 can cover the second side surfaces 122 of all the battery cells 1 in the battery module 10 .
  • the side panel 2 is integrally formed.
  • one side plate 2 includes a flat body portion 23 and an engaging protrusion 21 protruding from the body portion 23, and the other side plate 2 includes a flat body portion 23 and a body portion 23 is recessed to form an engaging groove 22 .
  • the second direction may be the thickness direction of the battery cell 1, that is, the direction shown by the Y axis in the figure; the second direction may also be the height direction of the bottom surface of the end cover 11, that is, the Z direction in the figure. direction indicated by the axis.
  • the second direction can also be a direction perpendicular to the first direction X other than the Y axis or the Z axis, and the engagement groove 22 and the engagement protrusion 21 with different structures can limit the movement of adjacent battery modules 10 Movement in one or more directions.
  • two adjacent side plates 2A and 2B are taken as examples below to illustrate how different structures of the engaging grooves 22 and engaging protrusions 21 limit the movement of the adjacent battery modules 10 in the second direction.
  • the side plate 2A is provided with an engaging protrusion 21
  • the engaging protrusion 21 is a cylinder protruding along the first direction X
  • the side plate 2B is along the first direction X
  • the depression forms a cylindrical engaging groove 22 that cooperates with the engaging protrusion 21 .
  • a plurality of engaging protrusions 21 are provided on the side plate 2A, and the engaging protrusions 21 protrude along the first direction X, and the plurality of engaging protrusions 21
  • the connecting parts 24 are arranged in a row, and the side plate 2B is recessed along the first direction X to form an engaging groove 22 for matching with the connecting parts 24 .
  • the connecting part 24 When the side plate 2A and the side plate 2B are assembled, the connecting part 24 is inserted into the engaging groove 22 along the first direction X, and the outer peripheral side of the connecting part 24 is limited by the inner wall surface of the engaging groove 22, that is, the connecting part 24 At least two engaging protrusions 21 are in contact with the inner wall of the engaging groove 22, so that the side plate 2A and the side plate 2B are engaged by the engaging protrusions 21 and the engaging protrusions 21 in multiple directions perpendicular to the first direction X. Groove 22 limits.
  • the side plate 2A is provided with an engaging protrusion 21, which is a strip-shaped structure protruding along the first direction X, and the side plate 2B is concavely formed to match the The engaging protrusion 21 matches the engaging groove 22 .
  • the engaging protrusion 21 is inserted into the engaging groove 22 along the first direction X, and both sides of the engaging protrusion 21 along the width direction are limited by the inner wall surface of the engaging groove 22, The movement of the side plates 2A and 2B along the direction perpendicular to the extending direction of the bar-shaped engaging protrusion 21 is restricted by the engaging protrusion 21 and the engaging groove 22 .
  • the side plate 2A is provided with an engaging protrusion 21, which is a protruding strip-shaped structure.
  • the engaging protrusion 21 includes a side plate 2 along the second The extension part 211 protruding in one direction X and the cover part 212 extending outward from the extension part 211 along the second direction, the side plate 2B is recessed to form an engaging groove 22 that cooperates with the engaging protrusion 21, and the engaging recess The opposite ends of the groove 22 have openings for the insertion of the engaging protrusions 21.
  • the connecting member 24 is inserted into the engaging groove 22 through the opening along the extending direction of the engaging groove 22, so that The movement of the side plate 2A and the side plate 2B along the direction perpendicular to the extending direction of the engaging protrusion 21 and the movement along the first direction X are restricted by the engaging protrusion 21 and the engaging groove 22 .
  • the structures of the engaging protrusions 21 and the engaging grooves 22 are varied and will not be repeated here. It can be understood that it is only necessary to ensure that the engaging protrusion 21 and the engaging groove 22 can at least realize the limitation of relative displacement in a second direction perpendicular to the first direction X, so as to ensure that the adjacent battery modules 10 No relative displacement occurs in the second direction.
  • the adjacent battery modules 10 can be engaged by the engaging protrusion 21 and the engaging groove 22 on the side plate 2.
  • engagement connection, the engagement protrusion 21 and the engagement groove 22 of the engagement connection limit the movement of the adjacent battery module 10 along the second direction; compared with the welding or bonding connection, the side plate 2 in this embodiment Even if a certain deformation occurs under the action of the expansion force of the battery cell 1, the engaging protrusion 21 and the engaging groove 22 of the engaging connection can ensure that the adjacent battery modules 10 are connected, thereby preventing the battery modules 10 from being opposed to each other after they are separated. Displacement improves battery 100 safety.
  • the side plates 2 connected to each other are provided with a plurality of engaging protrusions 21 , and engaging grooves 22 are defined between the engaging protrusions 21 provided on the side plates 2 . That is to say, one side plate 2 is provided with engaging protrusions 21 and engaging grooves 22 at the same time, and a plurality of engaging protrusions 21 are provided to increase the contact area between the connected side plates 2 and improve the stability of adjacent battery modules. 10 connection stability.
  • the engaging protrusions 21 may be disposed on the side plate 2 in the form of strips at intervals in sequence, or may be arranged in an array on the side plate 2 .
  • the elongated engaging protrusion 21 may be in the shape of a triangular prism, a cuboid, etc., which is not limited in this application.
  • the cross-section of the engaging protrusions 21 arranged in an array along the second direction may specifically be a square, a pentagon, a hexagon, or the like.
  • the plurality of engaging protrusions 21 of the side plate 2 extend along at least two different directions.
  • the third direction Y is the width direction of the battery cell 1
  • the fourth direction Z is the height direction of the battery cell 1
  • the first direction X, the third direction Y and the fourth direction Z Set vertically by two.
  • the side plate 2 is provided with an engaging protrusion 21 extending along the third direction Y, and is also provided with an engaging protrusion 21 extending along the fourth direction Z, and the engaging protrusion 21 is inserted into the engaging groove along the first direction X
  • the engagement protrusion 21 extending along the third direction Y can limit the relative displacement between the two side plates 2 in the fourth direction Z
  • the engagement protrusion 21 extending along the fourth direction Z can limit the displacement of the two side plates. 2 relative displacement occurs in the third direction Y.
  • more engaging protrusions 21 extending in different directions can be provided on the side plate 2 as required, so as to increase the direction in which the connected side plates 2 are restricted from displacement.
  • the extending direction of the engaging protrusion 21 in the plane where the side plate 2 is located has nothing to do with the direction in which the battery cell 1 is placed, that is, in some embodiments, all or part of the engaging protrusion 21 is in the
  • the extension direction of the plane where the side plate 2 is located intersects with the third direction Y or the fourth direction Z.
  • the engaging protrusions 21 extending in different directions can limit the movement of adjacent battery modules 10 in different directions, thereby ensuring that the battery modules 10 will not be displaced in multiple directions.
  • the battery 100 also includes adhesive glue disposed between two adjacent battery modules 10 , and the side plates 2 of the two adjacent battery modules 10 are bonded by the adhesive glue.
  • the plurality of battery cells 1 of the battery module 10 are arranged side by side along the third direction Y, and the battery module 10 also includes end plates 3 arranged oppositely along the third direction Y, the end plates 3 and the side plates 2 are connected end to end and arranged around a plurality of battery cells 1; the battery 100 also includes a connector 40, and the opposite ends of the connector 40 are respectively connected to the end plates 3 of two adjacent battery modules 10.
  • the end plate 3 and the side plate 2 can be connected end to end to surround a plurality of battery cells 1 arranged side by side along the third direction Y, and protect the battery cells 1 from multiple directions.
  • the number of connecting pieces 40 may be multiple, so as to increase the stability between adjacent end plates 3 .
  • two connecting pieces 40 are respectively connected to opposite ends of the end plate 3 .
  • Adjacent battery modules 10 are not only engaged and connected through the engaging protrusions 21 and engaging grooves 22 provided on the side plates 2, but also connected to adjacent end plates 3 through connectors 40 to improve the distance between adjacent battery modules 10. the stability of the connection.
  • the connecting piece 40 and each end plate 3 can specifically adopt one or more methods such as snap connection, bolt connection, welding and the like.
  • one is provided with a connecting protrusion 41
  • the other is provided with a connecting groove 42 adapted to the connecting protrusion 41
  • the connecting piece 40 and the end plate 3 pass through
  • the engaging connection is realized by inserting the connecting protrusion 41 into the connecting groove 42 .
  • the connecting piece 40 and the end plate 3 are engaged and connected through the connecting protrusion 41 and the connecting groove 42 , which facilitates the assembly of the connecting piece 40 and the end plate 3 .
  • the end plate 3 has a connecting groove 42
  • the connecting piece 40 includes a first connecting portion 43 and connecting protrusions 41 connected to opposite sides of the first connecting portion 43, and the connecting protrusions 41 are inserted into The connection groove 42
  • the end plate 3 is connected with the connection protrusion 41 by bolts.
  • the positioning of the connecting piece 40 and the end plate 3 can be realized through the connecting groove 42 and the connecting protrusion 41, so as to facilitate subsequent assembling of bolts.
  • the connection between the end plate 3 and the connecting piece 40 is not only achieved through the connecting groove 42 and the connecting protrusion 41 , but also through the connecting protrusion 41 for bolt connection, so as to improve the connection strength between the end plate 3 and the connecting piece 40 .
  • the end plate 3 includes a first side wall 31 and a second side wall 32 arranged at intervals along the third direction Y, a connection groove 42 is formed between the first side wall 31 and the second side wall 32, and the connection protrusion 41 abuts against the Between the first side wall 31 and the second side wall 32 .
  • the end plate 3 also includes a plurality of supporting ribs 33 supported between the first side wall 31 and the second side wall 32 to increase the structural strength of the end plate 3 .
  • the second side wall 32 is used to abut against the battery cell 1, so the end plate 3 is assembled with the battery cell 1 first, so that the second side wall 32 of the end plate 3 is abutted against the battery cell 1
  • the connection protrusion 41 is abutted between the first side wall 31 and the second side wall 32, so that the bolts inserted into the first side wall 31 from the outside of the end plate 3 can effectively fasten the first side wall 31 and the connection. Raised 41.
  • Blind holes adapted to the bolts may be provided on the connecting protrusion 41 , so that the second side wall 32 does not contact the bolts, so as to prevent the bolts from damaging the battery cells 1 abutting against the second side walls 32 .
  • Blind holes adapted to the bolts can also be provided on the second side wall 32, so that the bolts can fasten the first side wall 31, the connecting protrusion 41 and the second side wall 32 at the same time, and ensure that the bolts do not come into contact with the battery cell 1 resist pressure.
  • through holes can also be provided on the second side wall 32 , and bolts of appropriate length can be selected so that the bolts will not damage the battery cells 1 abutting against the second side wall 32 .
  • the end plate 3 further includes a position-limiting protrusion 34 protruding from the first side wall 31 to the second side wall 32 , and the first connecting portion 43 has a position-limiting recess cooperating with the position-limiting protrusion 34 .
  • Slot 44 The snap connection between the end plate 3 and the connecting piece 40 is not only realized through the connecting groove 42 and the connecting protrusion 41 , but also relative positioning is realized through the limiting protrusion 34 and the limiting groove 44 .
  • the connector 40 includes a second connecting portion 45 and a first fixing portion 46 connected to two opposite sides of the second connecting portion 45.
  • the second connecting portion 45 There is a connection groove 42, the connection protrusion 41 of the adjacent end plate 3 is inserted into the connection groove 42, and the two first fixing parts 46 are respectively arranged opposite to the connection protrusion 41 of the adjacent end plate 3 along the third direction Y.
  • the portion 46 is bolted to the connecting protrusion 41 .
  • the connecting protrusion 41 can be inserted into the connecting groove 42 in advance to realize the positioning of the connecting piece 40 and the end plate 3 , and then the first fixing part 46 and the connecting protrusion 41 can be fastened by bolts. Between the connecting piece 40 and the end plate 3, two connection methods are also adopted. On the one hand, the connecting protrusion 41 is engaged with the connecting groove 42; The stability of the connection between the plate 3 and the connector 40.
  • the end plate 3 also includes at least one supporting step 36 arranged on the peripheral side of the connecting protrusion 41, the connecting piece 40 is placed on the supporting step 36, and the first fixing portion 46 is away from the outer surface of the connecting protrusion 41 and the first side wall 31.
  • the outer surfaces are on the same plane.
  • the connector 40 includes a first connecting plate 47, a second connecting plate 48 bent and extended from opposite ends of the first connecting plate 47, and The second connecting plate 48 bends and extends the second fixing portion 49, the first connecting plate 47 and the two second connecting plates 48 form a connecting groove 42, and the connecting protrusions 41 of the two adjacent end plates 3 are snapped together to connect In the slot 42 , the second fixing portion 49 is bolted to the end plate 3 .
  • the first connecting plate 47 extends along the first direction X
  • the two second connecting plates 48 can extend from opposite ends of the first connecting plate 47 along the fourth direction Z
  • the second fixing part 49 can extend from the second connecting plate.
  • the end of 48 away from the first connecting plate 47 extends along the first direction X.
  • the adjacent wall surfaces of the two second connecting plates 48 are respectively in contact with the connecting protrusions 41 of the two adjacent end plates 3 , that is to say, the length of the first connecting plate 47 is the same as that of the connecting protrusions 41 of the adjacent end plates 3 along the first
  • the length of one direction X is adapted.
  • the length of the first connecting plate 47 in the embodiment shown in FIG. 19 is greater than the length of the first connecting plate 47 in the embodiment shown in FIG. 18 .
  • the end plate 3 includes a first side wall 31 and a second side wall 32 oppositely arranged, and the connection piece 40 is partially or completely accommodated on the first side wall 31 and the second side wall. Between the walls 32 , the end plate 3 further includes a mounting plate 35 connecting the first side wall 31 and the second side wall 32 , and the second fixing portion 49 is bolted to the mounting plate 35 .
  • the end plate 3 and the connecting piece 40 are engaged and connected by the connecting protrusion 41 and the connecting groove 42 on the one hand, and connected by the second fixing part 49 by bolts on the one hand, so as to improve the stability of the connection between the end plate 3 and the connecting piece 40 sex.
  • the connector 40 includes a first sub-piece 51 and a second sub-piece 52, the first sub-piece 51 includes a bent portion 511 and two oppositely arranged The through portion 512, the end plate 3 has a receiving groove 37 connected along the fourth direction Z, one end of the two through portions 512 is connected to the bending portion 511, and the other end respectively passes through the receiving groove 37 of the adjacent end plate 3 and connects with the first
  • the two sub-pieces 52 are connected by bolts.
  • the first sub-component 51 and the second sub-component 52 are detachably connected, and the bent portion 511 and the two through portions 512 may be integrally formed.
  • the second sub-component 52 includes a connecting piece 521 provided with a mounting hole, and a fastener 522 screwed to the through portion 512 .
  • the end of the penetrating portion 512 away from the bending portion 511 is inserted into and passes through the receiving groove 37, and the two receiving grooves 37 limit the movement of the connector 40 along the first direction X; the penetrating portion 512 passes through the receiving groove 37 and then passes through the connection
  • the mounting holes provided on the piece 521 are used to screw the fasteners 522 respectively with the two penetrating parts 512 , and the connecting piece 521 and the bent part 511 are arranged opposite to each other to limit the movement of the connecting piece 40 along the fourth direction Z.
  • the relative position of the connecting piece 40 and the end plate 3 can be fixed without setting the installation hole extending along the third direction Y on the end plate 3, avoiding setting up installation holes on the end plate 3, so that the end plate 3 has higher strength.
  • the end plate 3 also includes a receiving cavity 38 communicating with the receiving groove 37 , the bent portion 511 is accommodated in the receiving cavity 38 , and the end of the bent portion 511 close to the second sub-component 52 abuts against the wall of the receiving cavity 38 .
  • the two through parts 512 and the bent part 511 can form a U-shaped structure, and the receiving cavity 38 has a wall surface adapted to the curvature of the bent part 511 to increase the abutting area of the bent part 511 and the receiving cavity 38 .
  • the receiving cavity 38 is provided to accommodate the bending portion 511, so as to prevent the bending portion 511 from interfering with the arrangement of other components in the battery 100, and improve the compactness of the layout of the battery 100.

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

Abstract

本申请公开了一种电池和用电装置。该电池包括多个沿第一方向依次设置的电池模块；电池模块包括电池单体和设置于电池单体沿第一方向两侧的侧板，两相邻电池模块的侧板相互连接，在相互连接的两个侧板中，一个侧板设置有卡合凸起，另一个侧板具有卡合凹槽，卡合凸起与卡合凹槽卡合，以限制彼此在第二方向上的移动，第二方向垂直于第一方向。本申请提供的电池安全性好。

Description

电池和用电装置
相关申请的交叉引用
本申请要求享有于2022年01月05日提交的名称为“电池和用电装置”的中国专利申请202220018611.9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
本申请涉及储能器件技术领域，尤其涉及一种电池和用电装置。
背景技术
为了提高电池容量，通常将多个电池单体相互堆叠组成电池模块，再将多个电池模块相互堆叠。但是在电池单体膨胀力的作用下，容易导致相邻电池模块之间连接失效，连接失效的电池模块在外力作用下容易发生位移，从而产生安全隐患。
综上，需要设计出一种电池，以解决上述的技术问题。
发明内容
本申请实施例提供了一种电池和用电装置，通过在侧板上设置卡合连接的卡合凸起和卡合凹槽，从而限制相邻电池模块之间的位移，提高电池安全性能。
第一方面，本申请提供一种电池，电池包括多个沿第一方向依次设置的电池模块；电池模块包括电池单体和设置于电池单体沿第一方向两侧 的侧板；两相邻电池模块的侧板相互连接，在相互连接的两个侧板中，一个侧板设置有卡合凸起，另一个侧板具有卡合凹槽，卡合凸起与卡合凹槽卡合，以限制彼此在第二方向上的移动，第二方向垂直于第一方向。
上述方案中，通过在侧板上设置卡合凹槽和卡合凸起，使得相邻电池模块可以通过侧板上的卡合凸起和卡合凹槽卡合连接，卡合连接的卡合凸起和卡合凹槽限制相邻电池模块沿第二方向的移动；与焊接或粘接的连接方式相比，本实施例中的侧板即便在电池单体膨胀力的作用下发生一定形变，卡合连接的卡合凸起和卡合凹槽也能保证相邻电池模块相连接，从而防止电池模块分离后发生相对位移，提高电池安全性。
在一些实施例中，相互连接的侧板均设置有多个卡合凸起，侧板上设置的卡合凸起之间限定出卡合凹槽。一个侧板上同时设置有卡合凸起和卡合凹槽，并且设置有多个卡合凸起，增加相连接的侧板之间接触面积，提高相邻电池模块连接的稳定性。
在一些实施例中，在侧板所在平面内，侧板的多个卡合凸起至少沿两个不同方向延伸。沿不同方向延伸的卡合凸起可以限制相邻电池模块在不同方向上的移动，从而确保电池模块沿多个方向均不会产生位移。
在一些实施例中，电池还包括设置于两相邻电池模块之间的粘合胶，两相邻电池模块的侧板通过粘合胶粘接，使得侧板之间不仅通过卡合凸起和卡合凹槽实现卡合连接，还通过粘合胶实现粘接，提高相邻电池模块之间连接的稳定性。
在一些实施例中，电池模块的多个电池单体沿第三方向并排设置，电池模块还包括沿第三方向相对设置的端板，端板和侧板首尾连接并围绕多个电池单体设置；电池还包括连接件，连接件的相对两端分别与两相邻电池模块的端板连接，以限制相邻端板的相对位移，第一方向垂直于第三 方向。
上述方案中，相邻电池模块之间不仅仅通过侧板上设置的卡合凸起和卡合凹槽卡合连接，还通过连接件限制相邻端板的相对位移，提高相邻电池模块之间连接的稳定性。
在一些实施例中，相连接的连接件和端板中，一个设置有连接凸起，另一个设置有与连接凸起适配的连接槽。连接件和端板通过连接凸起和连接槽卡合连接，方便连接件和端板装配。
在一些实施例中，端板具有连接槽，连接件包括第一连接部和与第一连接部相对两侧连接的连接凸起，连接凸起插入连接槽，端板与连接凸起螺栓连接。端板和连接件之间不仅通过连接槽和连接凸起实现卡合连接，还通过连接凸起进行螺栓连接，提高端板和连接件的连接强度。
在一些实施例中，端板包括沿第三方向相对间隔设置的第一侧壁和第二侧壁，第一侧壁和第二侧壁之间形成连接槽，连接凸起抵接在第一侧壁和第二侧壁之间。由于连接凸起与第一侧壁抵接，方便拧入的螺栓紧固连接凸起和第一侧壁。
在一些实施例中，端板还包括自第一侧壁向第二侧壁凸出设置的限位凸起，第一连接部具有与限位凸起配合的限位凹槽。端板和连接件之间不仅通过连接槽和连接凸起实现卡合连接，还通过限位凸起，和限位凹槽实现相对限位。
在一些实施例中，连接件包括第二连接部和与第二连接部相对两侧连接的第一固定部，第二连接部具有连接槽，相邻端板的连接凸起插入连接槽，两个第一固定部分别与相邻端板的连接凸起沿第三方向相对设置，第一固定部与连接凸起螺栓连接。端板和连接件一方面通过连接凸起和连接槽卡合连接，另一方面通过第一固定部和连接凸起螺栓连接，提高端板 和连接件连接的稳定性。
在一些实施例中，连接件包括第一连接板、自第一连接板的相对两端弯折延伸的第二连接板、以及自第二连接板弯折延伸的第二固定部，第一连接板和两个第二连接板形成连接槽，两相邻端板的连接凸起一并卡合于连接槽内，第二固定部与端板螺栓连接。端板和连接件一方面通过连接凸起和连接槽卡合连接，另一方面通过第二固定部螺栓连接，提高端板和连接件连接的稳定性。
在一些实施例中，连接件包括第一子件和第二子件，第一子件包括弯折部和两个相对设置的贯穿部，端板具有沿第四方向连通的收容槽，两个贯穿部的一端与弯折部连接，另一端分别穿过相邻端板的收容槽并与第二子件螺栓连接，第四方向与第三方向垂直设置。第一子件可以限制两个端板在沿第三方向上的移动，弯折部和第二子件可以限制端板和连接件之间的移动。贯穿部穿过沿第四方向设置的收容槽，端板上不需要开设沿第三方向设置的安装孔，使得端板具有较高的强度。
在一些实施例中，端板还包括与收容槽连通的收容腔，弯折部收容于收容腔内，并且弯折部靠近第二子件的一端与收容腔的壁面抵接。设置收容腔收容弯折部，避免弯折部干涉电池中其他零部件的设置，提高电池布局的紧密性。
第二方面，本申请提供一种用电装置，包括第一方面任一实施例的电池，电池用于提供电能。
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。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一些实施例的车辆的结构示意图；
图2为本申请一些实施例的电池的分解结构示意图；
图3为本申请一些实施例的电池单体的分解结构示意图；
图4为本申请一些实施例的电池的立体结构示意图；
图5为本申请一些实施例的电池的拆解结构示意图；
图6为本申请一些实施例的侧板的部分立体结构示意图；
图7为本申请另一些实施例的侧板的部分立体结构示意图；
图8为本申请又一些实施例的侧板的部分立体结构示意图；
图9为本申请再一些实施例的侧板的部分立体结构示意图；
图10为本申请又一些实施例的侧板的平面结构示意图；
图11为本申请又一些实施例的侧板的部分立体结构示意图；
图12为本申请一些实施例的端板和连接件的立体结构示意图；
图13为图12所示A部分的放大结构示意图；
图14为本申请一些实施例的端板和连接件的拆解结构示意图；
图15为图14所示B部分的放大结构示意图；
图16为本申请一些实施例的端板和连接件的部分装配结构示意图；
图17为本申请一些实施例的端板和连接件的部分拆解结构示意图；
图18为本申请另一些实施例的端板和连接件的部分装配结构示意图；
图19为本申请另一些实施例的端板和连接件的部分拆解结构示意图；
图20为本申请又一些实施例的端板和连接件的部分拆解结构示意图；
图21为本申请又一些实施例的端板和连接件的部分装配结构示意图；
图22为本申请又一些实施例的端板和连接件的部分拆解结构示意图。
附图标号如下：
车辆1000；电池100；控制器200；马达300；电池模块10；上盖20；下盖30；
电池单体1；端盖11；电极端子11a；外壳12；第一侧面121；第二侧面122；电极组件13；侧板2；卡合凸起21；延伸部211；盖体部212；卡合凹槽22；主体部23；连接部件24；端板3；第一侧壁31；第二侧壁32；支撑筋33；限位凸起34；安装板35；支撑台阶36；收容槽37；收容腔38；
连接件40；连接凸起41；连接槽42；第一连接部43；限位凹槽44；第二连接部45；第一固定部46；第一连接板47；第二连接板48；第二固定部49；第一子件51；弯折部511；贯穿部512；第二子件52；连接片521；紧固件522。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
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。
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。
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。
本申请中，电池单体可以包括锂离子二次电池单体、锂离子一次电池单体、锂硫电池单体、钠锂离子电池单体、钠离子电池单体或镁离子电池单体等，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层叠后作为正极极耳。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层叠后作为负极极耳。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。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)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。
申请人发现，为了提高电池容量，通常将多个电池单体相互堆叠组 成电池模块，再将多个电池模块相互堆叠至箱体中。多个电池模块之间，通常通过电池模块的端板胶接或焊接在一起，电池单体会随着使用时间增加而发生膨胀，在电池单体膨胀力的作用下端板发生变形，使得相邻端板之间分离，电池模块之间连接失效，连接失效的电池模块在外力作用下容易发生位移，从而产生安全隐患。
本申请实施例公开的电池单体可以但不限用于车辆、船舶或飞行器等用电装置中。可以使用具备本申请公开的电池单体、电池等组成该用电装置的电源系统，这样，可避免电池单体膨胀力作用，导致电池模块之间连接失效，提升电池安全性。
本申请实施例提供一种使用电池作为电源的用电装置，用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一实施例的一种用电装置为车辆1000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的结构示意图。车辆1000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1000的内部设置有电池100，电池100可以设置在车辆1000的底部或头部或尾部。电池100可以用于车辆1000的供电，例如，电池100可以作为车辆1000的操作电源。车辆1000还可以包括控制器200和马达300，控制器200用来控制电池100为马达300供电，例如，用于车辆1000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100不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一些实施例提供的电池的分解结构示意图。电池100包括箱体和电池单体(未标示)。在一些实施例中，箱体可以包括上盖20和下盖30，上盖20与下盖30相互盖合，上盖20和下盖30共同限定出用于容纳电池单体的容纳空间。下盖30可以为一端开口的空心结构，上盖20可以为板状结构，上盖20盖合于下盖30的开口侧，以使上盖20与下盖30共同限定出容纳空间；上盖20和下盖30也可以是均为一侧开口的空心结构，上盖20的开口侧盖合于下盖30的开口侧。当然，上盖20和下盖30形成的箱体可以是多种形状，比如，圆柱体、长方体等。
在电池100中，电池单体可以是多个，多个电池单体之间可串联或并联或混联，混联是指多个电池单体中既有串联又有并联。多个电池单体之间可直接串联或并联或混联在一起，再将多个电池单体构成的整体容纳于箱体内；当然，电池100也可以是多个电池单体先串联或并联或混联组成电池模块10形式，多个电池模块10再串联或并联或混联形成一个整体，并容纳于箱体内。电池100还可以包括其他结构，例如，该电池100还可以包括汇流部件(图未示出)，用于实现多个电池单体之间的电连接。
其中，每个电池单体可以为二次电池单体或一次电池单体；还可以是锂硫电池单体、钠离子电池单体或镁离子电池单体，但不局限于此。电池单体可呈圆柱体、扁平体、长方体或其它形状等。
请参照图3，图3为本申请一些实施例提供的电池单体的分解结构 示意图。电池单体1是指组成电池的最小单元。如图3，电池单体1包括有端盖11、外壳12、电极组件13以及其他的功能性部件。
端盖11是指盖合于外壳12的开口处以将电池单体1的内部环境隔绝于外部环境的部件。不限地，端盖11的形状可以与外壳12的形状相适应以配合外壳12。可选地，端盖11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11在受挤压碰撞时就不易发生形变，使电池单体1能够具备更高的结构强度，安全性能也可以有所提高。端盖11上可以设置有如电极端子11a等的功能性部件。电极端子11a可以用于与电极组件13电连接，以用于输出或输入电池单体1的电能。在一些实施例中，端盖11上还可以设置有用于在电池单体1的内部压力或温度达到阈值时泄放内部压力的泄压机构。端盖11的材质也可以是多种的，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。在一些实施例中，在端盖11的内侧还可以设置有绝缘件，绝缘件可以用于隔离外壳12内的电连接部件与端盖11，以降低短路的风险。示例性的，绝缘件可以是塑料、橡胶等。
外壳12是用于配合端盖11以形成电池单体1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13、电解液以及其他部件。外壳12和端盖11可以是独立的部件，可以于外壳12上设置开口，通过在开口处使端盖11盖合开口以形成电池单体1的内部环境。不限地，也可以使端盖11和外壳12一体化，具体地，端盖11和外壳12可以在其他部件入壳前先形成一个共同的连接面，当需要封装外壳12的内部时，再使端盖11盖合外壳12。外壳12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，外壳12的形状可以根据电极组件13的具体形状和尺寸大小来确定。外壳12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13是电池单体1中发生电化学反应的部件。外壳12内可以包含一个或更多个电极组件13。电极组件13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13的主体，正极片和负极片不具有活性物质的部分各自构成极耳。正极极耳和负极极耳可以共同位于主体的一端或是分别位于主体的两端。在电池的充放电过程中，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11a以形成电流回路。
根据本申请的一些实施例，请一并参照图3至图7。本申请提供一种电池100，电池100包括多个沿第一方向X依次设置的电池模块10。电池模块10包括电池单体1和设置于电池单体1沿第一方向X两侧的侧板2。两相邻电池模块10的侧板2相互连接，在相互连接的两个侧板2中，一个侧板2设置有卡合凸起21，另一个侧板2具有卡合凹槽22，卡合凸起21与卡合凹槽22卡合，以限制彼此在第二方向上的移动，第二方向垂直于第一方向X。
侧板2与电池100中的其他板体或支架配合，以使侧板2与电池单体1的位置相对固定。在一实施例中，电池模块10还包括相对设置的端板3，两个端板3和两个侧板2依次首尾相连形成围绕多个电池单体1的框体结构。在本实施例中，电池100至少包括两个电池模块10，相邻两个电池模块10的侧板2相互卡合，以使电池模块10依次沿第一方向X相连接。电池单体1包括端盖11和外壳12，端盖11设置有电极端子11a，外壳12包括与端盖11相对设置的底面，以及相对设置的第一侧面121和相对设置的第二侧面122，其中第一侧面121的面积可以大于第二侧面 122，相邻电池单体1之间的第一侧面121相对设置。侧板2与第二侧面122相对设置。例如在图4所示实施例中，多个电池单体1沿电池单体1的宽度方向依次设置，第一方向X为电池单体1的长度方向，侧板2与第二侧面122沿第一方向X相对设置，使得侧板2可以限制电池单体1沿第一方向X进行移动。
侧板2为具有一定强度的材料制备而成，使得侧板2可以保护电池单体1在受挤压碰撞时不易发生形变，使电池单体1能够具备更高的结构强度，安全性能也可以有所提高。为了保证电池模块10中所有电池单体1均能被侧板2保护，侧板2沿电池模块10的长度方向的长度可以根据电池模块10中电池单体1的数量增加，侧板2的宽度与电池单体1的高度适配，以使得侧板2可以覆盖电池模块10中所有电池单体1的第二侧面122。可选地，侧板2为一体成型结构。相连接的侧板2中，一个侧板2包括平板状的主体部23和自主体部23凸出设置的卡合凸起21，另一个侧板2包括平板状的主体部23和自主体部23凹陷形成的卡合凹槽22。
垂直于第一方向X的方向有多个，本实施例并不限制第二方向具体是垂直于第一方向X的哪一方向。以图4所示实施例为例，第二方向可以是电池单体1的厚度方向，即图示Y轴所示方向；第二方向还可以端盖11到底面的高度方向，即图示Z轴所示方向。当然第二方向还可以是除Y轴或Z轴所示的其他与第一方向X垂直的方向，具有不同结构的卡合凹槽22和卡合凸起21，可以限制相邻电池模块10在一个或多个方向上的移动。为方便描述，以下以两相邻侧板2A和侧板2B为例进行说明，不同结构的卡合凹槽22和卡合凸起21如何限制相邻电池模块10在第二方向上的移动。
在一实施例中，请参考图5，侧板2A上设置有卡合凸起21，该卡 合凸起21为沿第一方向X凸出设置的圆柱体，侧板2B沿第一方向X凹陷形成与卡合凸起21配合的圆柱形卡合凹槽22。侧板2A和侧板2B装配时，卡合凸起21沿第一方向X插入卡合凹槽22内，卡合凸起21的周侧均被卡合凹槽22的内壁面限位，使得侧板2A和侧板2B在沿垂直于第一方向X的任一方向的移动，均被卡合凸起21和卡合凹槽22限制。
请参阅图6和图8，在另一实施例中，侧板2A上设置多个卡合凸起21，该卡合凸起21沿第一方向X凸出设置，多个卡合凸起21排列形成连接部件24，侧板2B沿第一方向X凹陷形成与连接部件24配合的卡合凹槽22。侧板2A和侧板2B装配时，连接部件24沿第一方向X插入卡合凹槽22内，连接部件24的外周侧均被卡合凹槽22的内壁面限位，即连接部件24中至少两个卡合凸起21与卡合凹槽22的内壁面接触，使得侧板2A和侧板2B在沿垂直于第一方向X的多个方向，均被卡合凸起21和卡合凹槽22限制。
请参阅图9，在又一实施例中，侧板2A上设置有卡合凸起21，该卡合凸起21为沿第一方向X凸出设置的条状结构，侧板2B凹陷形成与卡合凸起21配合的卡合凹槽22。侧板2A和2B装配时，卡合凸起21沿第一方向X插入卡合凹槽22内，卡合凸起21的沿宽度方向的两侧被卡合凹槽22的内壁面限位，使得侧板2A和2B沿垂直于条状卡合凸起21的延伸方向的移动，均被卡合凸起21和卡合凹槽22限制。
请参阅图10，在再一实施例中，侧板2A上设置有卡合凸起21，该卡合凸起21为凸出的条状结构，卡合凸起21包括自侧板2沿第一方向X凸出设置的延伸部211和自延伸部211沿第二方向向外延伸的盖体部212，侧板2B凹陷形成与卡合凸起21配合的卡合凹槽22，卡合凹槽22的相对两端具有供卡合凸起21插入的开口，侧板2A和侧板2B装配时，连 接部件24沿卡合凹槽22的延伸方向通过开口插入卡合凹槽22内，使得侧板2A和侧板2B沿垂直于卡合凸起21的延伸方向的移动、以及沿第一方向X的移动均被卡合凸起21和卡合凹槽22限制。
卡合凸起21和卡合凹槽22的结构多种多样，在此不再一一赘述。可以理解的是，仅需确保卡合凸起21和卡合凹槽22至少能实现在一个垂直第一方向X的第二方向上限制彼此相对位移，即可确保相邻电池模块10在沿该第二方向上不会发生相对位移。
在本实施例中，通过在侧板2上设置卡合凹槽22和卡合凸起21，使得相邻电池模块10可以通过侧板2上的卡合凸起21和卡合凹槽22卡合连接，卡合连接的卡合凸起21和卡合凹槽22限制相邻电池模块10沿第二方向的移动；与焊接或粘接的连接方式相比，本实施例中的侧板2即便在电池单体1膨胀力的作用下发生一定形变，卡合连接的卡合凸起21和卡合凹槽22也能保证相邻电池模块10相连接，从而防止电池模块10分离后发生相对位移，提高电池100安全性。
请再次参阅图9和图10，相互连接的侧板2均设置有多个卡合凸起21，侧板2上设置的卡合凸起21之间限定出卡合凹槽22。即一个侧板2上同时设置有卡合凸起21和卡合凹槽22，并且设置有多个卡合凸起21，以增加相连接的侧板2之间接触面积，提高相邻电池模块10连接的稳定性。
卡合凸起21具体可以是呈依次间隔的长条状设置在侧板2上，还可以呈阵列排布在侧板2上。长条状的卡合凸起21具体可以是三棱柱形、长方体形等，本申请不做限制。呈阵列排布的卡合凸起21沿第二方向的横截面具体可以是正方形、五边形、六边形等。
请一并参阅图4和图11，在侧板2所在平面内，侧板2的多个卡合 凸起21至少沿两个不同方向延伸。以图11所示实施例为例，第三方向Y为电池单体1的宽度方向，第四方向Z为电池单体1的高度方向，第一方向X、第三方向Y和第四方向Z两两垂直设置。侧板2上设置有沿第三方向Y延伸的卡合凸起21，还设置有沿第四方向Z延伸的卡合凸起21，卡合凸起21沿第一方向X插入卡合凹槽22后，沿第三方向Y延伸的卡合凸起21可以限制两侧板2之间在第四方向Z上发生相对位移，沿第四方向Z延伸的卡合凸起21可以限制两侧板2之间在第三方向Y上发生相对位移。在一些实施例中，侧板2上还可以根据需要设置更多沿不同方向延伸的卡合凸起21，以增加相连接的侧板2被限制位移的方向。本领域技术人员可以理解的是，卡合凸起21在侧板2所在平面内的延伸方向与电池单体1的放置方向无关，即在一些实施例中，全部或部分卡合凸起21在侧板2所在平面内的延伸方向与第三方向Y或第四方向Z相交设置。
沿不同方向延伸的卡合凸起21可以限制相邻电池模块10在不同方向上的移动，从而确保电池模块10沿多个方向均不会产生位移。
电池100还包括设置于两相邻电池模块10之间的粘合胶，两相邻电池模块10的侧板2通过粘合胶粘接。
在将两电池模块10装配之前，先在侧板2上涂覆粘合胶，再将卡合凸起21插入卡合凹槽22内，使得侧板2之间不仅通过卡合凸起21和卡合凹槽22实现卡合连接，还通过粘合胶实现粘接，提高相邻电池模块10之间连接的稳定性。
请一并参阅图4、图12至图15，电池模块10的多个电池单体1沿第三方向Y并排设置，电池模块10还包括沿第三方向Y相对设置的端板3，端板3和侧板2首尾连接并围绕多个电池单体1设置；电池100还包括连接件40，连接件40的相对两端分别与两相邻电池模块10的端板3连 接。
端板3和侧板2可以首尾相连以围绕多个沿第三方向Y并排设置的电池单体1，从多个方向对电池单体1进行保护。连接件40的数量可以为多个，以增加相邻端板3之间的稳定性。如图14所示实施例中，两个连接件40分别与端板3的相对两端连接。相邻电池模块10之间不仅仅通过侧板2上设置的卡合凸起21和卡合凹槽22卡合连接，还通过连接件40连接相邻端板3，提高相邻电池模块10之间连接的稳定性。
连接件40和各端板3具体可以采用卡合连接、螺栓连接、焊接等一种或多种方式。在一实施例中，相连接的连接件40和端板3中，一个设置有连接凸起41，另一个设置有与连接凸起41适配的连接槽42，连接件40与端板3通过连接凸起41插入连接槽42的方式实现卡合连接。连接件40和端板3通过连接凸起41和连接槽42卡合连接，方便连接件40和端板3装配。
在一些实施例中，请参考图15，端板3具有连接槽42，连接件40包括第一连接部43和与第一连接部43相对两侧连接的连接凸起41，连接凸起41插入连接槽42，端板3与连接凸起41螺栓连接。装配时，可以通过连接槽42和连接凸起41实现连接件40和端板3的定位，以方便后续装配螺栓。端板3和连接件40之间不仅通过连接槽42和连接凸起41实现卡合连接，还通过连接凸起41进行螺栓连接，提高端板3和连接件40的连接强度。
端板3包括沿第三方向Y相对间隔设置的第一侧壁31和第二侧壁32，第一侧壁31和第二侧壁32之间形成连接槽42，连接凸起41抵接在第一侧壁31和第二侧壁32之间。端板3还包括多个支撑在第一侧壁31和第二侧壁32之间的支撑筋33，以增加端板3的结构强度。电池100生产 过程中，先组装电池模块10，再将电池模块10连接在一起。在一实施例中，第二侧壁32用于与电池单体1抵接，所以端板3先与电池单体1装配，以使端板3的第二侧壁32与电池单体1抵接，在这种情况下，螺栓从第一侧壁31远离第二侧壁32的一侧插入第一侧壁31的装配方式比较容易操作。所以将连接凸起41抵接在第一侧壁31和第二侧壁32之间，可以使得从端板3外侧插入第一侧壁31的螺栓能有效的紧固第一侧壁31和连接凸起41。
连接凸起41上可以设置与螺栓适配的盲孔，使得第二侧壁32与螺栓不接触，避免螺栓破坏与第二侧壁32抵接的电池单体1。还可以在第二侧壁32上设置与螺栓适配的盲孔，使得螺栓可以同时紧固第一侧壁31、连接凸起41和第二侧壁32，并且确保螺栓不与电池单体1抵压。当然还可以在第二侧壁32上设置通孔，并选择合适长度的螺栓，以使螺栓不会破坏与第二侧壁32抵接的电池单体1。
在一实施例中，端板3还包括自第一侧壁31向第二侧壁32凸出设置的限位凸起34，第一连接部43具有与限位凸起34配合的限位凹槽44。端板3和连接件40之间不仅通过连接槽42和连接凸起41实现卡合连接，还通过限位凸起34和限位凹槽44实现相对限位。
请参阅图4、图16和图17，在另一实施例中，连接件40包括第二连接部45和与第二连接部45相对两侧连接的第一固定部46，第二连接部45具有连接槽42，相邻端板3的连接凸起41插入连接槽42，两个第一固定部46分别与相邻端板3的连接凸起41沿第三方向Y相对设置，第一固定部46与连接凸起41螺栓连接。
可以预先通过连接凸起41插入连接槽42，实现连接件40和端板3定位，再通过螺栓紧固第一固定部46和连接凸起41。连接件40和端板3 之间，同样采用两种连接方式，一方面通过连接凸起41和连接槽42卡合连接，一方面通过第一固定部46和连接凸起41螺栓连接，提高端板3和连接件40连接的稳定性。
为了保证连接件40和端板3连接后，外表面平整。端板3还包括设置于连接凸起41的周侧的至少一个支撑台阶36，连接件40置于支撑台阶36上，第一固定部46远离连接凸起41的外表面与第一侧壁31的外表面在同一平面上。
请参阅图4、图18至图20，在又一实施例中，连接件40包括第一连接板47、自第一连接板47的相对两端弯折延伸的第二连接板48、以及自第二连接板48弯折延伸的第二固定部49，第一连接板47和两个第二连接板48形成连接槽42，两相邻端板3的连接凸起41一并卡合于连接槽42内，第二固定部49与端板3螺栓连接。
第一连接板47沿第一方向X延伸设置，两个第二连接板48可以自第一连接板47的相对两端沿第四方向Z延伸设置，第二固定部49可以自第二连接板48远离第一连接板47的一端沿第一方向X延伸设置。两个第二连接板48相靠近的壁面分别与两相邻端板3的连接凸起41接触，也就是说，第一连接板47的长度与相邻端板3的连接凸起41沿第一方向X的长度适配。例如图19所示实施例中的第一连接板47的长度大于图18所示实施例中的第一连接板47的长度。第二固定部49上设置沿第四方向Z延伸的安装孔，以使螺栓可沿第四方向Z插入第二固定部49，从而在端板3远离电池单体1的表面不留安装孔。同样地，为了避免连接件40干扰其他零部件设置，端板3包括相对设置的第一侧壁31和第二侧壁32，连接件40部分或全部收容在第一侧壁31和第二侧壁32之间，端板3还包括连接第一侧壁31和第二侧壁32的安装板35，第二固定部49与安装板35螺 栓连接。
在本实施例中，端板3和连接件40一方面通过连接凸起41和连接槽42卡合连接，一方面通过第二固定部49螺栓连接，提高端板3和连接件40连接的稳定性。
请参阅图4、图21和图22，在再一实施例中，连接件40包括第一子件51和第二子件52，第一子件51包括弯折部511和两个相对设置的贯穿部512，端板3具有沿第四方向Z连通的收容槽37，两个贯穿部512的一端与弯折部511连接，另一端分别穿过相邻端板3的收容槽37并与第二子件52螺栓连接。
第一子件51和第二子件52可拆卸连接，弯折部511和两个贯穿部512可以为一体成型件。第二子件52包括设置有安装孔的连接片521、以及与贯穿部512螺纹连接的紧固件522。装配时，贯穿部512远离弯折部511的一端插入并穿过收容槽37，两个收容槽37限制连接件40沿第一方向X的移动；贯穿部512穿过收容槽37后穿过连接片521上设置的安装孔，再将紧固件522分别与两个贯穿部512螺纹连接，连接片521和弯折部511相对设置，以限制连接件40沿第四方向Z的移动。端板3上无需设置沿第三方向Y延伸的安装孔，即可实现连接件40和端板3相对位置固定，避免在端板3上开设安装孔，使得端板3具有较高的强度。
端板3还包括与收容槽37连通的收容腔38，弯折部511收容于收容腔38内，并且弯折部511靠近第二子件52的一端与收容腔38的壁面抵接。
两个贯穿部512和弯折部511可以形成U形结构，收容腔38具有与弯折部511弯曲弧度适配的壁面，以增加弯折部511和收容腔38抵接的面积。设置收容腔38收容弯折部511，避免弯折部511干涉电池100中其 他零部件的设置，提高电池100布局的紧密性。
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 (14)

  1. 一种电池，所述电池包括多个沿第一方向依次设置的电池模块；所述电池模块包括电池单体和设置于所述电池单体沿所述第一方向两侧的侧板；
    两相邻所述电池模块的所述侧板相互连接，在相互连接的两个所述侧板中，一个所述侧板设置有卡合凸起，另一个所述侧板具有卡合凹槽，所述卡合凸起与所述卡合凹槽卡合，以限制彼此在第二方向上的移动，所述第二方向垂直于所述第一方向。
  2. 根据权利要求1所述的电池，其中，相互连接的所述侧板均设置有多个所述卡合凸起，所述侧板上设置的所述卡合凸起之间限定出所述卡合凹槽。
  3. 根据权利要求2所述的电池，其中，在所述侧板所在平面内，所述侧板的多个所述卡合凸起至少沿两个不同方向延伸。
  4. 根据权利要求1至3中任一项所述的电池，其中，所述电池还包括设置于两相邻所述电池模块之间的粘合胶，两相邻所述电池模块的所述侧板通过所述粘合胶粘接。
  5. 根据权利要求1至4中任一项所述的电池，其中，所述电池模块的多个所述电池单体沿第三方向并排设置，所述电池模块还包括沿所述第三方向相对设置的端板，所述端板和所述侧板首尾连接并围绕所述多个电池单体设置，所述第一方向垂直于所述第三方向；
    所述电池还包括连接件，所述连接件的相对两端分别与两相邻所述电池模块的端板连接，以限制相邻所述端板的相对位移。
  6. 根据权利要求5所述的电池，其中，相连接的所述连接件和所述端板中，一个设置有连接凸起，另一个设置有与所述连接凸起适配的连接 槽。
  7. 根据权利要求6所述的电池，其中，所述端板具有所述连接槽，所述连接件包括第一连接部和与所述第一连接部相对两侧连接的所述连接凸起，所述连接凸起插入所述连接槽，所述端板与所述连接凸起螺栓连接。
  8. 根据权利要求7所述的电池，其中，所述端板包括沿所述第三方向相对间隔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之间形成所述连接槽，所述连接凸起抵接在所述第一侧壁和第二侧壁之间。
  9. 根据权利要求8所述的电池，其中，所述端板还包括自所述第一侧壁向所述第二侧壁凸出设置限位凸起，所述第一连接部具有与所述限位凸起配合的限位凹槽。
  10. 根据权利要求6至9中任一项所述的电池，其中，所述连接件包括第二连接部和与所述第二连接部相对两侧连接的第一固定部，所述第二连接部具有所述连接槽，相邻所述端板的所述连接凸起插入所述连接槽，两个所述第一固定部分别与相邻所述端板的所述连接凸起沿所述第三方向相对设置，所述第一固定部与所述连接凸起螺栓连接。
  11. 根据权利要求6至10中任一项所述的电池，其中，所述连接件包括第一连接板、自所述第一连接板的相对两端弯折延伸的第二连接板、以及自所述第二连接板弯折延伸的第二固定部，所述第一连接板和两个所述第二连接板形成所述连接槽，两相邻所述端板的所述连接凸起一并卡合于所述连接槽内，所述第二固定部与所述端板螺栓连接。
  12. 根据权利要求5至11中任一项所述的电池，其中，所述连接件包括第一子件和第二子件，所述第一子件包括弯折部和两个相对设置的贯穿部，所述端板具有沿第四方向连通的收容槽，两个所述贯穿部的一端与所述弯折部连接，另一端分别穿过相邻所述端板的所述收容槽并与所述第二子件螺栓连接，所述第四方向与所述第三方向垂直设。
  13. 根据权利要求12所述的电池，其中，所述端板还包括与所述收容槽连通的收容腔，所述弯折部收容于所述收容腔内，并且所述弯折部靠近所述第二子件的一端与所述收容腔的壁面抵接。
  14. 一种用电装置，包括根据权利要求1至13中任一项所述的电池，所述电池用于提供电能。
PCT/CN2022/097480 2022-01-05 2022-06-07 电池和用电装置 Ceased WO2023130665A1 (zh)

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US20240006702A1 (en) 2024-01-04
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