WO2023133747A1 - 电池、用电设备、制备电池的方法和设备 - Google Patents

电池、用电设备、制备电池的方法和设备 Download PDF

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Publication number
WO2023133747A1
WO2023133747A1 PCT/CN2022/071718 CN2022071718W WO2023133747A1 WO 2023133747 A1 WO2023133747 A1 WO 2023133747A1 CN 2022071718 W CN2022071718 W CN 2022071718W WO 2023133747 A1 WO2023133747 A1 WO 2023133747A1
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WO
WIPO (PCT)
Prior art keywords
battery
fixing plate
box
battery cell
box body
Prior art date
Application number
PCT/CN2022/071718
Other languages
English (en)
French (fr)
Inventor
侯羽佳
陈兴地
王鹏
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202280005754.9A priority Critical patent/CN115956321B/zh
Priority to PCT/CN2022/071718 priority patent/WO2023133747A1/zh
Priority to CN202223279777.5U priority patent/CN219203366U/zh
Publication of WO2023133747A1 publication Critical patent/WO2023133747A1/zh

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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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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 batteries, in particular to a battery, an electrical device, a method and a device for preparing a battery.
  • the present application provides a battery, an electrical device, a method and a device for preparing the battery, which can ensure the structural strength of the battery, thereby improving the performance of the battery.
  • a battery including: a battery cell; a box body, the box body includes a first box body part and a second box body part, and the first box body part covers the second box body
  • the body part forms an accommodating cavity for accommodating the battery cell, and the battery cell is accommodated in the accommodating cavity;
  • a fixing plate is used for fixing the battery cell to the second box part;
  • the first connection A piece is used for connecting the first box part and the fixing plate.
  • the battery cell is accommodated in the accommodation cavity formed by the first box part and the second box part, and the battery cell is fixed by the fixing plate.
  • the body is fixed to the second box body, and the first connecting piece is connected to the first box body and the fixing plate.
  • the first box part of the battery is connected to the second box part and the battery cell through the first connecting piece to form a whole, thereby reducing the collision and friction between the first box part and the battery cell and other parts, Improve the rigidity and structural strength of the battery.
  • the first connecting part includes a first connecting part and a second connecting part connected to each other, and the first connecting part is used for connecting with the first wall of the first box part , wherein the first wall is used to cover the battery cell and the fixing plate, and the second connecting portion is used to connect with the fixing plate.
  • the first connecting portion is connected to the first wall of the first box body, the second connecting portion is connected to the fixing plate, and the first connecting portion and the second connecting portion are connected to each other, so that the first wall can be connected to the fixing plate.
  • the entire first wall covering the battery cells and the fixing plate can form a fixed connection structure with the fixing plate.
  • a recess is provided on the first surface of the first connecting portion facing the first wall, and the recess is used to store an adhesive for bonding the first wall to the first wall. the first side.
  • the concave portion By providing a concave portion on the first surface of the first connecting portion facing the first wall, the concave portion can store adhesive, thereby bonding the first wall and the first surface together, improving the performance of the first connecting piece and the first box body.
  • the connection strength between parts By providing a concave portion on the first surface of the first connecting portion facing the first wall, the concave portion can store adhesive, thereby bonding the first wall and the first surface together, improving the performance of the first connecting piece and the first box body.
  • the second surface of the first connecting portion away from the first wall abuts against the battery cell.
  • the second surface of the first connecting portion away from the first wall abuts on the battery cell, and the battery cell supports the first connecting portion, so that the connection between the first connecting portion and the first wall is tighter and firmer.
  • the second connecting part is provided with a card slot, and the second connecting part is inserted into the fixing plate through the card slot, so as to be connected with the fixing plate.
  • the second connecting part By providing the card slot on the second connecting part, the second connecting part can be plugged into the fixing plate through the card slot, so as to realize the connection between the second connecting part and the fixing plate.
  • This connection method is simple and convenient, and is easy to install and disassemble between the second connecting part and the fixing plate.
  • the slot is also used for filling adhesive, so that the slot is bonded to the fixing plate.
  • the second connecting portion can also be bonded to the fixing plate through the adhesive in the slot, which further enhances the connection strength between the second connecting portion and the fixing plate.
  • a glue storage tank is provided on the side of the second connection part facing the battery cell, and the glue storage tank is used to store adhesive for use in the second connection part.
  • the adhesive in the glue storage tank overflows to bond the second connecting portion and the battery cell.
  • the glue storage tank By setting the glue storage tank on the side of the second connecting part facing the battery cell, the glue storage tank is used to store the adhesive, and when the first connecting part is connected to the fixing plate, the adhesive in the glue storage tank overflows to The second connection part is connected to the battery cell, thereby increasing the connection strength between the second connection part and the battery cell, and further increasing the overall strength of the battery.
  • a cantilever is provided at an end of the second connecting portion far away from the first connecting portion, and the cantilever is inclined from the end toward the first connecting portion, so as to
  • the glue storage tank is formed with an opening facing the first connecting portion.
  • the cantilever By setting the cantilever at the end of the second connecting part away from the first connecting part, the cantilever is inclined from the end toward the first connecting part to form a glue storage tank with an opening facing the first connecting part, so that when the second connecting part When connecting with the fixing plate, the cantilever is pressed toward the second connecting part, so that the adhesive in the glue storage tank overflows to bond the second connecting part and the battery cell.
  • the cantilever is provided with a through hole, so that when the second connecting part is connected to the fixing plate, the adhesive in the glue storage tank overflows from the through hole to bond the second connecting portion and the battery cell.
  • the adhesive in the glue storage tank can overflow from the through hole, which increases the bonding area between the second connection part and the battery cell, which is beneficial to make the second connection part and the battery cell
  • the bond between the body is stronger.
  • the battery includes a battery module, and the battery module includes: N columns of the battery cells, each of the N columns of the battery cells includes A plurality of battery cells arranged in the first direction, the N columns of battery cells are arranged along the second direction, N is an integer greater than 1, and the first direction is perpendicular to the second direction; N-1
  • the fixing plate, the fixing plate extends along the first direction and is arranged between two adjacent rows of the battery cells, the fixing plate and the two adjacent rows of the battery cells
  • Each of the battery cells is fixedly connected; wherein, the end of the fixing plate in the first direction is provided with a fixing structure, and the fixing plate is fixed to the second box body through the fixing structure .
  • a fixing plate is arranged between two adjacent rows of battery cells of the battery module, and the fixing plate is fixedly connected to each battery cell in the two rows of battery cells, and a fixing structure is arranged at the end of the fixing plate, and the fixing plate It is fixed to the second box body through a fixing structure.
  • each battery cell in the battery is fixed to the second box body by the fixing plate and the fixing structure, so each battery cell can transmit its load to the second box body, ensuring the structural strength of the battery;
  • there is no need to install side plates on the outside of the battery module and there is no need to install beams and other structures in the middle of the second box part, which can maximize the space utilization rate inside the battery, thereby increasing the energy of the battery. density.
  • the battery includes a plurality of battery modules, the plurality of battery modules are arranged along the second direction, and there are gaps between adjacent battery modules.
  • a fixing plate is provided between two rows of battery cells, and no fixing plate is provided between adjacent battery modules.
  • the fixing plate inside the battery can be reduced as much as possible, and on the other hand, a certain gap can be formed between adjacent battery modules to provide expansion space for the battery cells.
  • the battery further includes a second connector, a part of the second connector is disposed in the gap, and is used to connect the first box part and both sides of the gap. of the battery cells.
  • the connection between the first box part and the battery cells can be further strengthened; Friction and collision between battery modules due to relative motion.
  • the fixing structure includes an end plate, the end plate is fixedly connected to the end of the fixing plate, and is connected to the battery located at the end of the fixing plate. Single fixed connection. In this way, the effect of fixing the battery cells can be further enhanced.
  • the battery further includes: a current flow component, configured to electrically connect the battery cells; wherein, a portion of the first connecting member is disposed between adjacent current flow components.
  • the first connecting member can function to isolate adjacent current-combining components, reducing the risk of short circuit.
  • an electric device including the battery in the foregoing first aspect or any possible implementation manner of the first aspect, where the battery is used to supply power to the electric device.
  • a method for preparing a battery comprising: providing a battery cell; providing a box body, the box body includes a first box body part and a second box body part, and the first box body part is closed
  • the second box part forms an accommodating cavity for accommodating the battery cell; providing a fixing plate; providing a first connector; accommodating the battery cell in the accommodating cavity, and connecting the battery cell through the fixing plate
  • the battery cells are fixed on the second box part, and the first box part and the fixing plate are connected through the first connecting piece.
  • a device for preparing a battery including: providing a module for providing a battery cell, a box body, a fixing plate and a first connector, the box body includes a first box body part and a second box body Body part, the first box body part covers the second box body part to form an accommodating cavity for accommodating the battery cell; an installation module is used for accommodating the battery cell in the accommodating cavity, through The fixing plate fixes the battery cell to the second box body, and connects the first box body and the fixing plate through the first connecting piece.
  • the battery cells are accommodated in the accommodation cavity formed by the first box part and the second box part, and the battery is fixed by the fixing plate.
  • the single body is fixed on the second box body, and the first connecting piece connects the first box body and the fixing plate.
  • the first box part of the battery is connected with the second box part and the battery cell through the first connecting piece to form a whole, thereby reducing the collision and friction between the first box part and the battery cell and other parts , improving the rigidity and structural strength of the battery.
  • Fig. 1 is a schematic structural view of a vehicle according to an embodiment of the present application
  • Fig. 2 is a schematic diagram of a battery according to an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a battery cell according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a battery according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a first connector according to an embodiment of the present application.
  • Fig. 6 is a sectional view of the first connector in Fig. 5;
  • Fig. 7 is a schematic diagram of another first connector according to the embodiment of the present application.
  • Fig. 8 is a sectional view of the first connector in Fig. 7;
  • FIG. 9 is a schematic diagram of a battery module according to an embodiment of the present application.
  • Fig. 10 is an exploded schematic diagram of the battery module in Fig. 9;
  • Fig. 11 is a schematic diagram of another first connector according to the embodiment of the present application.
  • Figure 12 is a schematic flow chart of a method for preparing a battery according to an embodiment of the present application.
  • Fig. 13 is a schematic block diagram of a device for preparing a battery according to an embodiment of the present application.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in the embodiments of the present application.
  • 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.
  • batteries mentioned in this application may include battery packs 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 serves as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium 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 serves 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 number of positive pole tabs is multiple and stacked together, and the number of negative pole tabs is multiple and stacked together.
  • the material of the isolation film can be polypropylene (PP) or polyethylene (PE).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • the battery may include multiple battery cells, wherein the multiple battery cells may be connected in series, in parallel or in parallel, and the hybrid connection refers to a mixture of series and parallel connections.
  • a plurality of battery cells can be connected in series, parallel or mixed to form a battery module, and then a plurality of battery modules can be connected in series, parallel or mixed to form a battery. That is to say, multiple battery cells can directly form a battery, or form a battery module first, and then form a battery from the battery module.
  • the battery is further arranged in the electric device to provide electric energy for the electric device.
  • an embodiment of the present application provides a battery, which includes a battery cell, a case, a fixing plate, and a first connector.
  • the box body includes a first box body part and a second box body part.
  • the first box body part covers the second box body part to form an accommodating cavity for accommodating the battery cell, and the battery cell is accommodated in the accommodating cavity.
  • the battery cells are fixed on the second box body, and the first box body and the fixing plate are connected through the first connecting piece. In this way, the first box part is connected to the fixing plate in the second box part through the first connecting piece, so that the first box part, the second box part, and the battery cells accommodated in the box are connected to form a overall.
  • the load acting on the first case part can be transmitted to the whole battery, avoiding damage caused by the low structural strength of the first case part itself, and at the same time avoiding the contact between the first case part and the battery cells and other parts. friction and collision; moreover, the battery forms a whole, which improves the overall structural strength of the battery.
  • batteries such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships and spacecraft, etc.
  • spacecraft include Airplanes, rockets, space shuttles and spaceships, etc.
  • FIG. 1 it is a schematic structural diagram of a vehicle 1 according to an embodiment 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 Extended range cars, etc.
  • a motor 40 , a controller 30 and a battery 10 can be arranged inside the vehicle 1 , and the controller 30 is used to control the battery 10 to supply power to the motor 40 .
  • the battery 10 may be provided at the bottom or front or rear 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 , for a circuit system of the vehicle 1 , for example, for starting, navigating and running power requirements of the vehicle 1 .
  • 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 multiple battery cells.
  • FIG. 2 which is 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 cells 20 .
  • the battery 10 may further include a box body 11 , the inside of which is a hollow structure, and a plurality of battery cells 20 are accommodated in the box body 11 .
  • a plurality of battery cells 20 are placed in the case 11 after being connected in parallel, in series or in parallel.
  • the battery 10 may also include other structures, which will not be repeated here.
  • the battery 10 may further include a busbar 12, which is used to realize the electrical connection between a plurality of battery cells 20, such as parallel connection, series connection or mixed connection.
  • the bus component 12 can realize the electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20 .
  • the bus member 12 may be fixed to the electrode terminal of the battery cell 20 by welding.
  • the electric energy of the plurality of battery cells 20 can be further drawn out through the box body 11 through the conductive mechanism.
  • the conductive means can also belong to the current-collecting part 12 .
  • the number of battery cells 20 can be set to any value. Multiple battery cells 20 can be connected in series, in parallel or in parallel to achieve greater capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, for the convenience of installation, the battery cells 20 may be arranged in groups, and each group of battery cells 20 constitutes a battery module 50 . The number of battery cells 20 included in the battery module 50 is not limited, and can be set according to requirements.
  • the battery may include a plurality of battery modules 50, and these battery modules 50 may be connected in series, in parallel or in parallel.
  • the battery cell 20 includes one or more electrode assemblies 22 , a casing 211 and a cover plate 212 .
  • the housing 211 and the cover plate 212 form the housing or battery compartment 21 .
  • the walls of the casing 211 and the cover plate 212 are both called the walls of the battery cell 20 , wherein for the rectangular parallelepiped battery cell 20 , the walls of the casing 211 include a bottom wall and four side walls.
  • the housing 211 depends on the combined shape of one or more electrode assemblies 22.
  • the housing 211 can be a hollow cuboid or cube or cylinder, and one of the surfaces of the housing 211 has an opening so that one or more electrodes Assembly 22 may be placed within housing 211 .
  • one of the planes of the housing 211 is an open surface, that is, the plane does not have a wall so that the inside and outside of the housing 211 communicate.
  • the casing 211 can be a hollow cylinder, the end surface of the casing 211 is an open surface, that is, the end surface does not have a wall so that the inside and outside of the casing 211 communicate.
  • the cover plate 212 covers the opening and is connected with the casing 211 to form a closed cavity for placing the electrode assembly 22 .
  • the casing 211 is filled with electrolyte, such as electrolytic solution.
  • the battery cell 20 may further include two electrode terminals 214 , and the two electrode terminals 214 may be disposed on the cover plate 212 .
  • the cover plate 212 is usually in the shape of a flat plate, and two electrode terminals 214 are fixed on the flat plate surface of the cover plate 212, and the two electrode terminals 214 are positive electrode terminals 214a and negative electrode terminals 214b respectively.
  • Each electrode terminal 214 is respectively provided with a connecting member 23 , or also referred to as a current collecting member 23 , which is located between the cover plate 212 and the electrode assembly 22 for electrically connecting the electrode assembly 22 and the electrode terminal 214 .
  • each electrode assembly 22 has a first tab 221a and a second tab 222a.
  • the polarities of the first tab 221a and the second tab 222a are opposite.
  • the first tab 221a is a positive tab
  • the second tab 222a is a negative tab.
  • the first tabs 221a of one or more electrode assemblies 22 are connected to one electrode terminal through one connection member 23
  • the second tabs 222a of one or more electrode assemblies 22 are connected to another electrode terminal through another connection member 23 .
  • the positive electrode terminal 214 a is connected to the positive electrode tab through one connection member 23
  • the negative electrode terminal 214 b is connected to the negative electrode tab through the other connection member 23 .
  • the electrode assembly 22 can be arranged as a single one or in multiples. As shown in FIG. 3 , four independent electrode assemblies 22 are arranged in the battery cell 20 .
  • a pressure relief mechanism 213 may also be provided on the battery cell 20 .
  • the pressure relief mechanism 213 is activated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.
  • the pressure relief mechanism 213 may be various possible pressure relief structures, which are not limited in this embodiment of the present application.
  • the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism configured to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold; and/or, the pressure relief mechanism 213 may be a pressure-sensitive pressure relief mechanism configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.
  • FIG. 4 is a schematic diagram of a battery 10 according to an embodiment of the present application.
  • Fig. 5 is a schematic diagram of a first connecting piece according to an embodiment of the present application.
  • FIG. 6 is a cross-sectional view of the first connector in FIG. 5 .
  • Fig. 7 is a schematic diagram of another first connecting member according to the embodiment of the present application.
  • FIG. 8 is a cross-sectional view of the first connector in FIG. 7 .
  • Fig. 9 is a schematic diagram of a battery module according to an embodiment of the present application.
  • FIG. 10 is an exploded schematic view of the battery module in FIG. 9 . As shown in FIGS.
  • the battery 10 includes a battery cell 20 , a box body 11 , a fixing plate 300 and a first connector 400 .
  • the box body 11 includes a first box body part 111 and a second box body part 112.
  • the first box body part 111 covers the second box body part 112 to form an accommodating cavity for accommodating the battery cell 20, and the battery cell 20 is accommodated in the accommodating cavity.
  • the fixing plate 300 is used to fix the battery cell 20 to the second box part 112 .
  • the first connecting piece 400 is used to connect the first box part 111 and the fixing plate 300 .
  • the box body 11 can have various structures.
  • the box body 11 may include a first box body part 111 and a second box body part 112, and the first box body part 111 and the second box body part 112 cover each other to define a space for accommodating the battery cells 20.
  • the second box part 112 can be a hollow structure with one end open, the first box part 111 can be a plate-shaped structure, and the first box part 111 covers the opening side of the second box part 112, so that the first box The body part 111 and the second box body part 112 jointly define a receiving cavity.
  • the first box part 111 and the second box part 112 can also be hollow structures with one side opening, and the opening side of the first box part 111 covers the opening side of the second box part 112 .
  • the first box body part 111 and the second box body part 112 may be in various shapes, such as a cylinder, a cuboid, and the like.
  • the fixing plate 300 is used to fix the battery cell 20 to the second box part 112 .
  • the fixing plate 300 can be directly or indirectly fixedly connected with the battery cells 20 and the second box body 112 , so that the fixing plate 300 , the battery cells 20 , and the second box body 112 form a whole.
  • the connection between the fixing plate 300, the battery cell 20, and the second box part 112 can be bonding, welding, riveting, clamping, etc., as long as the connection between the three can be realized, the embodiment of the present application There is no limit to this.
  • the first connecting piece 400 is used to connect the first box body portion 111 and the fixing plate 300.
  • a connecting piece 400 and the fixing plate 300 form a whole.
  • the three may be connected by bonding, welding, riveting, clamping, etc., which is not limited in this embodiment of the present application.
  • the first box part 111 is connected to the fixing plate 300 in the second box part 112 through the first connector 400, and the battery cell 20 is fixed to the second box part through the fixing plate 300, so that The first box part 111 , the second box part 112 , and the battery cells 20 accommodated in the accommodating cavity are connected through the first connecting member 400 to form a whole, that is, the battery 10 is a whole.
  • the load acting on the first box body 111 can be transmitted to the entire battery 10, avoiding losses due to the low structural strength of the first box body 111 itself, and at the same time It also avoids friction and collision between the first box part 111 and the battery cells 20 in the battery 10 ; moreover, the battery 10 is formed as a whole, which improves the overall structural strength of the battery 10 .
  • the first connecting part 400 includes a first connecting part 401 and a second connecting part 402 connected to each other, and the first connecting part 401 is used for connecting with the first wall of the first box part 111 .
  • the first wall is used to cover the battery cells 20 and the fixing plate 300
  • the second connecting portion 402 is used to connect with the fixing plate 300 .
  • the first connection part 400 includes a first connection part 401 and a second connection part 402 connected to each other.
  • the first connecting portion 401 and the second connecting portion 402 may be perpendicular to each other, and the first connecting portion 401 and the second connecting portion 402 may also form a T-shape.
  • first connecting portion 401 and the second connecting portion 402 may be strip-shaped or cross-shaped, and the structure of the first connecting portion 401 may be specifically set as required, which is not limited in this embodiment of the present application.
  • the part of the second connecting portion 402 extending along the second direction can be inserted into the corresponding battery cells 20 in the same column. Between adjacent battery cells 20 , the part of the second connecting portion 402 extending along the first direction may be fixedly connected to the fixing plate 300 .
  • the first connection part 401 is used to connect with the first wall of the first box part 111 , and the first wall is used to cover the battery cells 20 and the fixing plate 300 .
  • the first box part 111 is a hollow structure with one side open.
  • the first box part 111 includes a first side surface 111a, a second side surface 111b adjacent to the first side surface, a third side surface 111c disposed opposite to the first side surface, and opposite to the second side surface.
  • the fourth side surface 111d and the top surface 111e are provided.
  • the first wall of the first box part 111 is the inner side of the top surface 111e, that is, located on the side of the top surface 111e facing the opening of the first box part 111 .
  • the first box part 111 can also be a plate-shaped structure
  • the second box part 112 is a hollow structure with one side open
  • the first wall is the side of the first box part 111 facing the second box part. 112 one side of the opening.
  • the first connecting part 401 is connected with the first wall of the first box body part 111
  • the second connecting part 402 is connected with the fixed plate 300
  • the first connecting part 401 and the second connecting part 402 are connected with each other, realizing the first wall and the fixed wall. board 300 connections. In this way, the entire first wall covering the battery cells 20 and the fixing plate 300 can form a fixed connection structure with the fixing plate 300 .
  • the first surface 401a facing the first wall of the first connecting portion 401 is provided with a recess 4011, and the recess 4011 is used to store adhesive for bonding the first wall and the first surface 401a.
  • the first face 401a faces the first wall and is provided with a recess 4011 for storing adhesive and may be formed by an extrusion process.
  • a sufficient amount of adhesive can be placed in the concave portion 4011, and the adhesive overflows to the first surface 401a to realize the bonding of the first wall and the first surface 401a.
  • a recess 4011 is provided, and the recess 4011 is used to store adhesive for bonding the first wall and the first surface 401a, further improving the first The connection strength between the connecting piece 400 and the first box part 111 .
  • the second surface 401 b of the first connecting portion 401 away from the first wall abuts against the battery cell 20 .
  • the second surface 401 b is opposite to the first surface 401 a and located on a side of the first connecting portion 401 away from the first wall, and the second surface 401 b abuts against the top surface 201 a of the battery cell 20 . In this way, the battery cells 20 support the first connecting portion 401 , making the connection between the first connecting portion 401 and the first wall more compact and firm.
  • an adhesive may also be coated on the second surface 401b, so that the second surface 401b is bonded to the top surface 201a of the battery cell 20, thereby increasing the first connecting portion 401 and the connection strength between the battery cell 20.
  • the second connecting part 402 is provided with a card slot 411 , and the second connecting part 402 is plugged into the fixing plate 300 through the card slot to be connected with the fixing plate 300 .
  • the locking slot 411 includes a first locking surface 411a and a second locking surface 411b, and the first locking surface 411a and the second locking surface 411b abut against the fixing plate 300 respectively to connect the second connection part 402 and the fixed plate 300.
  • connection between the second connecting portion 402 and the fixing plate 300 is realized through the slot 411 , this connection method is simple and convenient, and it is easy to realize the installation and disassembly between the two.
  • the slot 411 is also used for filling adhesive, so that the slot 411 is bonded to the fixing plate 300 .
  • This connection method further strengthens the connection strength between the second connection portion 402 and the fixing plate 300 .
  • the second connecting part 402 further includes a first side 402a and a second side 402b, and an adhesive is coated on the first side 402a and the second side 402b to connect the second side.
  • the connection part 402 and the battery cell 20 increase the connection strength between the second connection part 402 and the battery cell 20 .
  • a glue storage tank 421 is provided on the side of the second connection part 402 facing the battery cell 20 , and the glue storage tank 421 is used to store adhesive for connecting the second connection part 402 to a fixed When the board 300 is turned on, the adhesive in the glue storage tank 421 overflows to bond the second connecting portion 402 and the battery cell 20 .
  • the glue storage tank 421 is squeezed, and the adhesive in the glue storage tank 421 overflows, so that the first side 402a and the second side 402b of the second connection part 402 are respectively connected to the
  • the battery cells 20 are bonded.
  • the bonding between the second connecting portion 402 and the battery cell 20 makes the connection between the first box portion 111 and the second box portion 112 stronger, and further increases the overall strength of the battery 10 .
  • the end of the second connecting portion 402 away from the first connecting portion 401 is provided with a cantilever 4021 , and the cantilever 4021 is inclined from the end toward the first connecting portion 401 to form an opening facing the first connecting portion 401 Glue storage tank 421.
  • the cantilever 4021 When the second connecting portion 402 is connected to the fixing plate 300 , the cantilever 4021 is pressed toward the second side 402 b, so that the adhesive in the glue storage tank 421 overflows to bond the second connecting portion 402 and the battery cell 20 .
  • the cantilever 4021 can be set on only one side of the second connecting portion 402, such as the first side 402a or the second side 402b, or can be set on both sides of the second connecting portion 402, such as the first side 402a and the second side 402b, which is not limited in this embodiment of the present application.
  • the cantilever 4021 is provided with a through hole, so that when the second connecting part 402 is connected to the fixed plate 300, the adhesive in the glue storage tank 421 overflows from the through hole to bond the second connecting part 402 and the fixed plate 300. battery cell 20 .
  • the through holes may be arranged along the extending direction of the cantilever 4021, and the distance between each through hole may be set according to the actual situation, which is not limited in this embodiment of the present application.
  • the side of the cantilever 4021 facing the battery cell 20, that is, the cantilever side 4021a is in contact with the battery cell. body 20, and at the same time, the first side 402a and the second side 402b of the second connection part 402 are also bonded to the battery cell 20, thereby increasing the bonding area between the second connection part 402 and the battery cell 20, so that The bond between the two is stronger.
  • the battery 10 includes a battery module 50 , and the battery module 50 includes N columns of battery cells 20 and N ⁇ 1 fixing plates 300 .
  • Each column of battery cells 20 in N columns of battery cells 20 includes a plurality of battery cells 20 arranged along a first direction, N columns of battery cells are arranged along a second direction, N is an integer greater than 1, and the first direction is vertical in the second direction.
  • the fixing plate 300 extends along the first direction and is disposed between two adjacent rows of battery cells 20 , and the fixing plate 300 is fixedly connected to each battery cell 20 in the two adjacent rows of battery cells 20 .
  • the end of the fixing plate 300 in the first direction is provided with a fixing structure 302 , and the fixing plate 300 is fixed to the second box part 402 through the fixing structure 302 .
  • Each row of battery cells 20 in the N rows of battery cells 20 is arranged along a first direction, wherein the first direction may be the x direction.
  • N rows of battery cells 20 are arranged along a second direction, wherein the second direction may be the y direction, and the x direction and the y direction are perpendicular to each other.
  • the battery module 50 includes N rows of battery cells 20 and N ⁇ 1 fixing plates 300 , that is, the fixing plates 300 are disposed inside the battery module 50 , and no fixing plates 300 are disposed outside the battery module 50 .
  • one fixing plate 300 is arranged between two rows of battery cells 20, two fixing plates 300 are arranged between three rows of battery cells 20, and so on. Through such an arrangement, fewer fixing plates 300 can be used so that each battery cell 20 in the battery module 100 can be fixedly connected by the fixing plates 300 .
  • the fixing structures 302 may be disposed at both ends of the fixing plate 300 in the x direction.
  • the fixing plate 300 is fixed to the second box body 112 through the fixing structure 302 , thereby realizing fixing the battery module 50 to the second box body 112 .
  • each battery cell 20 in the battery module 50 is fixedly connected by the fixing plate 300 , and each battery cell 20 can be fixedly connected to the second box part 112 through the fixing structure 302 .
  • a fixing plate 300 is provided between two adjacent rows of battery cells 20 of the battery module 50 , and the fixing plate 300 is fixedly connected to each battery cell 20 in the two rows of battery cells 20 , and at the end of the fixing plate 300
  • a fixing structure 302 is provided on the upper part, and the fixing plate 300 is fixed to the second box part 112 through the fixing structure 302 .
  • each battery cell 20 in the battery 10 is fixed to the second case part 112 by the fixing plate 300 and the fixing structure 302, so that each battery cell 20 can transfer its load to the second case part 112,
  • the structural strength of the battery 10 is ensured; in this case, no side panels can be provided on the outside of the battery module 50, and no beams and other structures can be provided in the middle of the second box body 112, which can maximize the improvement inside the battery. space utilization, thereby increasing the energy density of the battery.
  • the fixing plate 300 may be fixedly connected to each battery cell 20 in two adjacent rows of battery cells 20 by bonding.
  • the fixing plate 300 and each battery cell 20 in two adjacent rows of battery cells 20 may be bonded by structural adhesive, but this embodiment of the present application is not limited thereto.
  • adjacent battery cells 20 in each row of battery cells 20 in N rows of battery cells 20 may also be bonded, for example, by structural glue 310, but this embodiment of the present application does not limited.
  • the fixing effect of the battery cells 20 can be further enhanced by fixing between adjacent battery cells 20 in each row of battery cells 20 .
  • the fixing plate 300 can be a metal plate, such as a steel plate or an aluminum plate, or a plastic plate, and the material of the fixing plate 300 can also be a composite material, for example, other materials are coated on the surface of the metal plate.
  • the embodiment does not limit this.
  • the thickness of the fixing plate 300 may be 0.1-0.5 mm, for example, in one embodiment of the present application, the thickness of the fixing plate may be 0.2-0.4 mm.
  • the fixed plate 300 with this thickness can reduce the space occupied by the fixed plate 300 while ensuring the strength.
  • the battery 10 includes a plurality of battery modules 50 arranged along the second direction with gaps between adjacent battery modules 50 .
  • a plurality of battery modules 50 can be arranged along the y direction, and there is no fixing plate 300 between adjacent battery modules 50 , and there is a certain gap. That is to say, in one battery module 50 , the fixing plate 300 is provided between two rows of battery cells 20 , but the fixing plate 300 is not provided between adjacent battery modules 50 . In this way, on the one hand, the fixing plate 300 inside the battery 10 can be reduced as much as possible; on the other hand, a certain gap can be formed between adjacent battery modules 50 to provide expansion space for the battery cells 20 .
  • the battery 10 further includes a second connecting piece, and a part of the second connecting piece is disposed in the gap for connecting the first case part 111 and the battery cells 20 on both sides of the gap.
  • the second connecting member may have a structure similar to that of the first connecting member 400 , and specific details will not be repeated, and reference may be made to the above-mentioned embodiments. It should be understood that if there is no fixing plate 300 in the gap, the second connecting member does not need to be provided with a card slot.
  • the second connecting part includes a first connecting part and a second connecting part, the first connecting part of the second connecting part is connected to the first box part 111, and the second connecting part
  • the second connecting portion of the component is connected to the battery cells 20 on both sides of the gap.
  • a part of the second connecting piece is disposed in the gap, and the second connecting portion of the second connecting piece may be inserted into the gap, and the second connecting portion of the second connecting piece abuts against the battery cells 20 on both sides of the gap respectively.
  • the setting of the second connecting member can isolate the friction and collision between the two battery modules 50 due to relative movement, and also further strengthen the connection strength between the first box part 111 and the battery cells 20 .
  • the fixing structure 302 includes an end plate 304 fixedly connected to the end of the fixing plate 300 and fixedly connected to the battery cell 20 located at the end of the fixing plate 300 .
  • the end plate 304 can be vertically connected to the fixing plate 300, and respectively connected to the two adjacent side walls of the rectangular parallelepiped battery cell 20 with the fixing plate 300, thereby further strengthening the stability of the battery cell. A fixed effect of 20.
  • the end plate 304 can be made of the same material as the fixed plate 300, for example, metal, plastic or composite material.
  • the end plate 304 may also have the same thickness as the fixed plate 300 .
  • the material or thickness of the end plate 304 may also be different from that of the fixed plate 300, for example, the end plate 304 may adopt a higher strength or thickness setting, but this is not limited in the embodiment of the present application.
  • connection between the fixed plate 300 and the end plate 304 can be resistance welding, resistance riveting, SPR riveting, locking bolts or clamping; the end plate 304 can also be connected by resistance welding, resistance riveting, or SPR riveting. , locking bolts, snap-fit and other connection methods are fixed to the box body, but this embodiment of the present application does not limit this.
  • the end plate 304 and the battery cell 20 may be fixedly connected by bonding, for example, bonding by structural glue, but this is not limited in this embodiment of the present application.
  • the battery 10 may also include another battery module.
  • the battery module includes a plurality of battery cells 20, side plates and/or end plates.
  • the side plates and/or end plates are used to surround a plurality of battery cells 20 to fix the plurality of battery cells 20, the battery module is fixed to the second box part 112 through the side plates and/or end plates, and the fixing plate 300 is the side panels and/or end panels.
  • the battery cells 20 in each row of battery cells 20 among the plurality of battery cells 20 are arranged along a first direction, and each row of battery cells 20 is arranged along a second direction , a plurality of battery cells 20 form a battery cell group.
  • first direction side plates are provided on the outside of the battery cell group; along the second direction, end plates are provided on the outside of the battery cell group.
  • the fixing plate 300 may be a side plate through which the battery module is fixed to the second box part 112, and the second connecting part 402 of the first connecting part 400 may be inserted into the battery cell group and In the gap between the side plates, the first connecting part 401 of the first connecting piece 400 is connected to the first box body 111, so that the first connecting piece 400 connects the first box body 111 and the second box body 111 via the side plates. 112 connections.
  • the fixing plate 300 may also be an end plate or may also be a side plate and an end plate, which is not limited in this embodiment of the present application.
  • Fig. 11 is a schematic diagram of a first connecting piece according to an embodiment of the present application.
  • the fixing plate 300 is a side plate and an end plate
  • the battery 10 includes a plurality of battery modules
  • the first connecting part 401 and the second connecting part 402 of the first connecting part 400 are both In the shape of a cross
  • the first connector 400 is respectively connected to four battery modules at four corners, wherein the two subsections 402' of the second connector 402 are respectively connected to the end plates of the two battery modules, and the second connector The other two subsections 402' of the part 402 are respectively connected to the side panels of the other two battery modules.
  • the battery 10 further includes a bus member 12 for electrically connecting the battery cells 20 .
  • Parts of the first connecting member 400 are disposed between adjacent bus components 12 .
  • the distance between adjacent busbars 12 is relatively short, and arcs are likely to be generated under high voltage conditions to cause a short circuit of the battery.
  • the first connector 400 is provided between adjacent busbars 12, and the first connector 400 is insulated.
  • the connecting piece can isolate the adjacent bus components 12 to reduce the risk of short circuit.
  • the first connector 400 is arranged between two adjacent rows of battery cells 20 in a battery module 50 , in this case, the first connector 400
  • the arrangement can not only improve the overall structural strength of the battery 10 , but also isolate adjacent current-combining components 12 to improve the safety performance of the battery 10 .
  • the second connecting member is arranged between adjacent battery modules 50, and the first connecting member 400 is arranged between adjacent bus components 12.
  • the first connecting member 400 is arranged between adjacent bus components 12.
  • It can not only isolate the collision and friction between two adjacent battery modules 20 , but also isolate the adjacent current-flow component 12 , thereby further improving the overall structural strength of the battery 10 while ensuring the safety of the battery 10 .
  • An embodiment of the present application also provides an electric device, which may include the battery 10 in the foregoing embodiments.
  • the electrical device may be a vehicle 1, a ship, or a spacecraft, etc., but this is not limited in this embodiment of the present application.
  • the battery 10 and the electrical device of the embodiment of the present application are described above, and the method and device for preparing the battery of the embodiment of the present application will be described below, and the parts that are not described in detail can be referred to the foregoing embodiments.
  • FIG. 12 shows a schematic flowchart of a method 3000 for preparing a battery according to an embodiment of the present application. As shown in Figure 12, the method 3000 may include:
  • a box body 11 where the box body 11 includes a first box body part 111 and a second box body part 112, and the first box body part 111 covers the second box body part 112 to form an accommodating chamber for accommodating the battery cell 20;
  • Fig. 13 shows a schematic block diagram of a device 600 for preparing a battery according to an embodiment of the present application.
  • the device 600 for preparing a battery may include: a supply module 610 and an installation module 620 .
  • a module 610 is provided for providing the battery cells 20 , the box body 11 , the fixing plate 300 and the first connector 400 .
  • the box body 11 includes a first box body portion 111 and a second box body portion 112 , the first box body portion 111 covers the second box body portion 112 to form an accommodating cavity for accommodating the battery cell 20 .
  • the installation module 620 is used for accommodating the battery cell 20 in the accommodating cavity, fixing the battery cell 20 to the second box body 112 through the fixing plate 300 , and connecting the first box body 111 and the fixed box body 112 through the first connector 400 Plate 300.

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  • Battery Mounting, Suspending (AREA)

Abstract

本申请实施例提供一种电池(10)、用电设备、制备电池的方法(3000)和设备(600)。该电池(10)包括：电池单体(20)；箱体(11)，所述箱体(11)包括第一箱体部(111)和第二箱体部(112)，所述第一箱体部(111)盖合所述第二箱体部(112)形成容纳所述电池单体(20)的容纳腔，所述电池单体(20)容纳于所述容纳腔内；固定板(300)，用于将所述电池单体(20)固定于所述第二箱体部(112)；第一连接件(400)，用于连接所述第一箱体部(111)和所述固定板(300)。本申请实施例的技术方案，能够提升电池的性能。

Description

电池、用电设备、制备电池的方法和设备 技术领域
本申请涉及电池技术领域，特别是涉及一种电池、用电设备、制备电池的方法和设备。
背景技术
随着环境污染的日益加剧，新能源产业越来越受到人们的关注。在新能源产业中，电池技术是关乎其发展的一项重要因素。
电池技术的发展需要考虑多方面的设计因素，例如，能量密度、循环寿命、安全性能等。电池的能量密度的提高对电池本身的轻量化也提出了更高的要求，因而如何提供一种性能更好的电池是亟需解决的问题。
发明内容
本申请提供了一种电池、用电设备、制备电池的方法和设备，能够保障电池的结构强度，从而能够提升电池的性能。
第一方面，提供了一种电池，包括：电池单体；箱体，所述箱体包括第一箱体部和第二箱体部，所述第一箱体部盖合所述第二箱体部形成容纳所述电池单体的容纳腔，所述电池单体容纳于所述容纳腔内；固定板，用于将所述电池单体固定于所述第二箱体部；第一连接件，用于连接所述第一箱体部和所述固定板。
在本申请实施例中，通过设置第一箱体部和第二箱体部，电池单体容纳于第一箱体部和第二箱体部形成的容纳腔中，并通过固定板将电池单体固定于第二箱体部，第一连接件连接第一箱体部和固定板。这样，电池的第一箱体部与第二箱体部以及电池单体通过第一连接件连接形成一个整体，从而减少了第一箱体部与电池单体等零件之间的碰撞和摩擦，提升了电池的刚度和结构强度。
在一种可能的实现方式中，所述第一连接件包括相互连接的第一连接部和第二连接部，所述第一连接部用于与所述第一箱体部的第一壁连接，其中，所述第一 壁用于覆盖所述电池单体和所述固定板，所述第二连接部用于与所述固定板连接。
第一连接部与第一箱体部的第一壁连接，第二连接部与固定板连接，第一连接部和第二连接部相互连接，从而第一壁能够与固定板连接。这样，覆盖电池单体和固定板的整个第一壁能够与固定板形成固定连接结构。
在一种可能的实现方式中，所述第一连接部的面向所述第一壁的第一面设置有凹部，所述凹部用于储存粘接剂，用于粘接所述第一壁与所述第一面。
通过在第一连接部的面向第一壁的第一面设置凹部，凹部能够储存粘接剂，从而将第一壁和第一面粘接在一起，提高了第一连接件和第一箱体部之间的连接强度。
在一种可能实现的方式中，所述第一连接部的远离所述第一壁的第二面抵接所述电池单体。
第一连接部的远离第一壁的第二面抵接电池单体，电池单体对第一连接部起支撑作用，使第一连接部与第一壁之间的连接更为紧密牢固。
在一种可能的实现方式中，所述第二连接部设置有卡槽，所述第二连接部通过所述卡槽插接到所述固定板，以与所述固定板连接。
通过在第二连接部设置卡槽，第二连接部可以通过卡槽插接到固定板，实现第二连接部与固定板的连接。这种连接方式简单、方便，易于第二连接部与固定板之间的安装与拆卸。
在一种可能的实现方式中，所述卡槽还用于填充粘接剂，以使所述卡槽与所述固定板粘接连接。
通过在卡槽中填充粘接剂，第二连接部还可以通过卡槽中的粘接剂与固定板粘接，进一步加强了第二连接部和固定板之间的连接强度。
在一种可能的实现方式中，所述第二连接部的朝向所述电池单体的侧面设置有储胶槽，所述储胶槽用于储存粘结剂，以在所述第二连接部连接至所述固定板时，所述储胶槽内的粘接剂溢出以粘接所述第二连接部与所述电池单体。
通过在第二连接部的朝向电池单体的侧面设置储胶槽，储胶槽用于储存粘接剂，当第一连接部连接至固定板时，储胶槽中的粘接剂溢出以粘接第二连接部与电池单体，从而增加了第二连接部与电池单体之间的连接强度，进一步增加了电池的整体强度。
在一种可能的实现方式中，所述第二连接部的远离所述第一连接部的端部 设置有悬臂，所述悬臂从所述端部处朝向所述第一连接部倾斜设置，以形成开口朝向所述第一连接部的所述储胶槽。
通过在第二连接部的远离第一连接部的端部设置悬臂，悬臂从端部处朝向第一连接部倾斜设置，以形成开口朝向第一连接部的储胶槽，从而当第二连接部与固定板连接时，悬臂朝向第二连接部被挤压，从而储胶槽内的粘接剂溢出以粘接第二连接部与电池单体。
在一种可能的实现方式中，所述悬臂上设置有通孔，以在所述第二连接部连接至所述固定板时，所述储胶槽内的粘接剂从所述通孔溢出以粘接所述第二连接部与所述电池单体。
通过在悬臂上设置通孔，储胶槽中的粘接剂能够从通孔中溢出，增加了第二连接部与电池单体之间的粘接面积，有利于使第二连接部与电池单体之间的粘接更牢固。
在一种可能的实现方式中，所述电池包括电池模块，所述电池模块包括：N列所述电池单体，所述N列所述电池单体中的每列所述电池单体包括沿第一方向排列的多个所述电池单体，所述N列电池单体沿第二方向排列，N为大于1的整数，所述第一方向垂直于所述第二方向；N-1个所述固定板，所述固定板沿所述第一方向延伸且设置于相邻的两列所述电池单体之间，所述固定板与所述相邻的两列所述电池单体中的每个所述电池单体固定连接；其中，所述固定板在所述第一方向上的端部设置有固定结构，所述固定板通过所述固定结构固定于所述第二箱体部。
在电池模块的相邻的两列电池单体之间设置固定板，该固定板与该两列电池单体中的每个电池单体固定连接，在固定板的端部设置固定结构，固定板通过固定结构固定于第二箱体部。这样，电池中的每个电池单体都被固定板和固定结构固定于第二箱体部，因而每个电池单体能够将其载荷传递到第二箱体部，保障了电池的结构强度；在这种情况下，电池模块外侧可以不再设置侧板，第二箱体部的中部也不需要再设置梁等结构，可以较大限度地提升电池内部的空间利用率，从而提升电池的能量密度。
在一种可能的实现方式中，所述电池包括多个所述电池模块，多个所述电池模块沿所述第二方向排列，相邻的所述电池模块间具有间隙。
在一个电池模块内，在两列电池单体间设置固定板，在相邻的电池模块之 间不设置固定板。这样，一方面可以使得电池内部的固定板尽可能地减少，另一方面可以在相邻的电池模块之间形成一定的间隙，给电池单体提供膨胀空间。
在一种可能的实现方式中，所述电池还包括第二连接件，所述第二连接件的部分设置于所述间隙内，用于连接所述第一箱体部和所述间隙两侧的所述电池单体。
通过将第二连接件设置在间隙中，即，设置在相邻的两个电池模块之间，一方面可以进一步加强第一箱体部与电池单体间的连接，另一方面还可以隔离两个电池模块之间由于相对运动产生的摩擦及碰撞。
在一种可能的实现方式中，所述固定结构包括端板，所述端板与所述固定板的所述端部固定连接，且与位于所述固定板的所述端部的所述电池单体固定连接。这样，可以进一步加强对电池单体的固定效果。
在一种可能的实现方式中，所述电池还包括：汇流部件，用于电连接所述电池单体；其中，所述第一连接件的部分设置于相邻的汇流部件之间。这样，第一连接件可以起到隔离相邻的汇流部件的作用，降低短路的风险。
第二方面，提供了一种用电设备，包括上述第一方面或者第一方面的任一可能的实现方式中的电池，所述电池用于向所述用电设备供电。
第三方面，提供了一种制备电池的方法，包括：提供电池单体；提供箱体，所述箱体包括第一箱体部和第二箱体部，所述第一箱体部盖合所述第二箱体部形成容纳所述电池单体的容纳腔；提供固定板；提供第一连接件；将所述电池单体容纳于所述容纳腔内，通过所述固定板将所述电池单体固定于所述第二箱体部，通过所述第一连接件连接所述第一箱体部和所述固定板。
第四方面，提供了一种制备电池的设备，包括：提供模块，用于提供电池单体，箱体，固定板和第一连接件，所述箱体包括第一箱体部和第二箱体部，所述第一箱体部盖合所述第二箱体部形成容纳所述电池单体的容纳腔；安装模块，用于将所述电池单体容纳于所述容纳腔内，通过所述固定板将所述电池单体固定于所述第二箱体部，通过所述第一连接件连接所述第一箱体部和所述固定板。
本申请实施例的技术方案，通过设置第一箱体部和第二箱体部，电池单体容纳于第一箱体部和第二箱体部形成的容纳腔中，并通过固定板将电池单体固定于第二箱体部，第一连接件连接第一箱体部和固定板。这样，电池的第一箱体部与第二箱体部以及电池单体通通过第一连接件连接形成一个整体，从而减少了第一箱体部与电 池单体等零件之间的碰撞和摩擦，提升了电池的刚度和结构强度。
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，还可以根据附图获得其他的附图。
图1是本申请一实施例的一种车辆的结构示意图；
图2是本申请一实施例的一种电池的示意图；
图3是本申请一实施例的一种电池单体的示意图；
图4是本申请一实施例的一种电池的示意图；
图5是本申请实施例的一种第一连接件的示意图；
图6是图5中的第一连接件的一个截面图；
图7是本申请实施例的另一种第一连接件的示意图；
图8是图7中的第一连接件的一个截面图；
图9是本申请实施例的一种电池模块的示意图；
图10是图9中的电池模块的分解示意图；
图11是本申请实施例的再一种第一连接件的示意图；
图12是本申请一个实施例的制备电池的方法的示意性流程图；
图13是本申请一个实施例的制备电池的设备的示意性框图。
在附图中，附图并未按照实际的比例绘制。
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。
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。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：柱形电池单体、方体方形电池单体和软包电池单体，本申请实施例对此也不限定。
本申请的实施例所提到的电池是指包括一个或多个电池单体以提供更高的电压和容量的单一的物理模块。例如，本申请中所提到的电池可以包括电池包等。电池一般包括用于封装一个或多个电池单体的箱体。箱体可以避免液体或其他异物影响电池单体的充电或放电。
电池单体包括电极组件和电解液，电极组件由正极片、负极片和隔离膜组成。电池单体主要依靠金属离子在正极片和负极片之间移动来工作。正极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的集流体凸出于已涂覆正极活性物质层的集流体，未涂敷正极活性物质层的集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的集流体凸出于已涂覆负极活性物质层的集流体，未涂敷负极活性物质层的集流体作为负极极 耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为聚丙烯(PP)或聚乙烯(PE)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
为了满足不同的电力需求，电池可以包括多个电池单体，其中，多个电池单体之间可以串联或并联或混联，混联是指串联和并联的混合。可选地，多个电池单体可以先串联或并联或混联组成电池模块，多个电池模块再串联或并联或混联组成电池。也就是说，多个电池单体可以直接组成电池，也可以先组成电池模块，电池模块再组成电池。电池再进一步设置于用电设备中，为用电设备提供电能。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、循环寿命、放电容量、充放电倍率、安全性等。为了提高电池的能量密度，其对轻量化也提出了更高的要求，因此电池的上盖所使用的材料自身并无结构承载能力。然而，在运动过程中，电池受到振动或碰撞等时，上盖由于刚度比较低，可能会出现变形、破坏等问题。
鉴于此，本申请实施例提供了一种电池，该电池包括电池单体，箱体，固定板和第一连接件。箱体包括第一箱体部和第二箱体部，第一箱体部盖合第二箱体部形成容纳该电池单体的容纳腔，电池单体容纳于该容纳腔中，通过固定板将电池单体固定在第二箱体部，通过第一连接件将第一箱体部和固定板连接。这样，第一箱体部通过第一连接件与第二箱体部中的固定板连接，从而第一箱体部、第二箱体部、以及容纳在箱体中的电池单体连接形成一个整体。因此，作用在第一箱体部上的载荷可以传递到整个电池，避免因第一箱体部本身结构强度较低而造成破坏，同时还避免了第一箱体部与电池单体及其它零件的摩擦和碰撞；而且，电池形成一个整体，提高了电池的整体结构强度。
本申请实施例描述的技术方案均适用于各种使用电池的装置，例如，手机、便携式设备、笔记本电脑、电瓶车、电动玩具、电动工具、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。
应理解，本申请实施例描述的技术方案不仅仅局限适用于上述所描述的设备，还可以适用于所有使用电池的设备，但为描述简洁，下述实施例均以电动车辆为例进行说明。
例如，如图1所示，为本申请一个实施例的一种车辆1的结构示意图，车辆1可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1的内部可以设置马达40，控制器30以及电池10，控制器30用来控制电池10为马达40供电。例如，在车辆1的底部或车头或车尾可以设置电池10。电池10可以用于车辆1的供电，例如，电池10可以作为车辆1的操作电源，用于车辆1的电路系统，例如，用于车辆1的启动、导航和运行时的工作用电需求。在本申请的另一实施例中，电池10不仅仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，替代或部分地替代燃油或天然气为车辆1提供驱动动力。
为了满足不同的使用电力需求，电池10可以包括多个电池单体。例如，如图2所示，为本申请一个实施例的一种电池10的结构示意图，电池10可以包括多个电池单体20。电池10还可以包括箱体11，箱体11内部为中空结构，多个电池单体20容纳于箱体11内。例如，多个电池单体20相互并联或串联或混联组合后置于箱体11内。
可选地，电池10还可以包括其他结构，在此不再一一赘述。例如，该电池10还可以包括汇流部件12，汇流部件12用于实现多个电池单体20之间的电连接，例如并联或串联或混联。具体地，汇流部件12可通过连接电池单体20的电极端子实现电池单体20之间的电连接。进一步地，汇流部件12可通过焊接固定于电池单体20的电极端子。多个电池单体20的电能可进一步通过导电机构穿过箱体11而引出。可选地，导电机构也可属于汇流部件12。
根据不同的电力需求，电池单体20的数量可以设置为任意数值。多个电池单体20可通过串联、并联或混联的方式连接以实现较大的容量或功率。由于每个电池10中包括的电池单体20的数量可能较多，为了便于安装，可以将电池单体20分组设置，每组电池单体20组成电池模块50。电池模块50中包括的电池单体20的数量不限，可以根据需求设置。电池可以包括多个电池模块50，这些电池模块50可通过串联、并联或混联的方式进行连接。
如图3所示，为本申请一个实施例的一种电池单体20的结构示意图，电池单体20包括一个或多个电极组件22、壳体211和盖板212。壳体211和盖板212形成外壳或电池盒21。壳体211的壁以及盖板212均称为电池单体20的壁，其中对于长方体型电池单体20，壳体211的壁包括底壁和四个侧壁。壳体211根据一个或多个电极组件22组合后的形状而定，例如，壳体211可以为中空的长方体或正方体或圆柱体， 且壳体211的其中一个面具有开口以便一个或多个电极组件22可以放置于壳体211内。例如，当壳体211为中空的长方体或正方体时，壳体211的其中一个平面为开口面，即该平面不具有壁体而使得壳体211内外相通。当壳体211可以为中空的圆柱体时，壳体211的端面为开口面，即该端面不具有壁体而使得壳体211内外相通。盖板212覆盖开口并且与壳体211连接，以形成放置电极组件22的封闭的腔体。壳体211内填充有电解质，例如电解液。
该电池单体20还可以包括两个电极端子214，两个电极端子214可以设置在盖板212上。盖板212通常是平板形状，两个电极端子214固定在盖板212的平板面上，两个电极端子214分别为正电极端子214a和负电极端子214b。每个电极端子214各对应设置一个连接构件23，或者也可以称为集流构件23，其位于盖板212与电极组件22之间，用于将电极组件22和电极端子214实现电连接。
如图3所示，每个电极组件22具有第一极耳221a和第二极耳222a。第一极耳221a和第二极耳222a的极性相反。例如，当第一极耳221a为正极极耳时，第二极耳222a为负极极耳。一个或多个电极组件22的第一极耳221a通过一个连接构件23与一个电极端子连接，一个或多个电极组件22的第二极耳222a通过另一个连接构件23与另一个电极端子连接。例如，正电极端子214a通过一个连接构件23与正极极耳连接，负电极端子214b通过另一个连接构件23与负极极耳连接。
在该电池单体20中，根据实际使用需求，电极组件22可设置为单个，或多个，如图3所示，电池单体20内设置有4个独立的电极组件22。
电池单体20上还可设置泄压机构213。泄压机构213用于电池单体20的内部压力或温度达到阈值时致动以泄放内部压力或温度。
泄压机构213可以为各种可能的泄压结构，本申请实施例对此并不限定。例如，泄压机构213可以为温敏泄压机构，温敏泄压机构被配置为在设有泄压机构213的电池单体20的内部温度达到阈值时能够熔化；和/或，泄压机构213可以为压敏泄压机构，压敏泄压机构被配置为在设有泄压机构213的电池单体20的内部气压达到阈值时能够破裂。
图4是本申请实施例的一种电池10的示意图。图5是本申请实施例的一种第一连接件的示意图。图6是图5中的第一连接件的一个截面图。图7是本申请实施例的另一种第一连接件的示意图。图8是图7中的第一连接件的一个截面图。图9是本申 请实施例的一种电池模块的示意图。图10是图9中的电池模块的分解示意图。如图4至图10所示，电池10包括电池单体20，箱体11，固定板300和第一连接件400。箱体11包括第一箱体部111和第二箱体部112，第一箱体部111盖合第二箱体部112形成容纳电池单体20的容纳腔，电池单体20容纳于容纳腔内。固定板300用于将电池单体20固定于第二箱体部112。第一连接件400用于连接第一箱体部111和固定板300。
箱体11可以为多种结构。在一些实施例中，箱体11可以包括第一箱体部111和第二箱体部112，第一箱体部111和第二箱体部112相互盖合共同限定出容纳电池单体20的容纳腔。第二箱体部112可以为一端开口的空心结构，第一箱体部111可以为板状结构，第一箱体部111盖合于第二箱体部112的开口侧，以使第一箱体部111和第二箱体部112共同限定出容纳腔。第一箱体部111和第二箱体部112也可以是均为一侧开口的空心结构，第一箱体部111的开口侧盖合于第二箱体部112的开口侧。当然，第一箱体部111和第二箱体部112可以是多种形状，比如，圆柱体、长方体等。
固定板300用于将电池单体20固定于第二箱体部112。在一些实施例中，固定板300可以直接或间接与电池单体20和第二箱体部112固定连接，从而固定板300、电池单体20、第二箱体部112形成一个整体。固定板300、电池单体20、第二箱体部112之间的连接方式可以为粘接、焊接、铆接、卡接等，只要能实现三者彼此之间的连接即可，本申请实施例对此不作限制。
第一连接件400用于连接第一箱体部111和固定板300，可以是第一连接件400同时与第一箱体部111和固定板300固定连接，从而第一箱体部111、第一连接件400、固定板300形成一个整体。三者之间可以通过粘接、焊接、铆接、卡接等方式连接，本申请实施例对此不作限制。
在本申请实施例中，第一箱体部111通过第一连接件400与第二箱体部112中的固定板300连接，电池单体20通过固定板300固定于第二箱体部，从而第一箱体部111、第二箱体部112、容纳在容纳腔中的电池单体20通过第一连接件400连接形成一个整体，即电池10为一个整体。这样，在搬运电池10或者当电池10受到碰撞时，作用在第一箱体部111上的载荷可以传递到整个电池10，避免因第一箱体部111本身结构强度较低而造成损失，同时还避免了第一箱体部111与电池10内的电池单体20等零件之间的摩擦和碰撞；而且，电池10形成一个整体，提高了电池10的整体结构强度。
如图5和图6所示，第一连接件400包括相互连接的第一连接部401和第二 连接部402，第一连接部401用于与第一箱体部111的第一壁连接。第一壁用于覆盖电池单体20和固定板300，第二连接部402用于与固定板300连接。
第一连接件400包括相互连接的第一连接部401和第二连接部402。可选地，在本申请一实施例中，第一连接部401可以和第二连接部402相互垂直，第一连接部401和第二连接部402还可以形成T字形。
可选地，第一连接部401和第二连接部402可以为条形，也可以为十字形，第一连接部401的结构可以根据需要具体设置，本申请实施例对此不作限制。
可选地，在本申请一实施例中，当第一连接部401和第二连接部402为十字形时，第二连接部402沿第二方向延伸的部分可以插入同列电池单体20的相邻的电池单体20之间，第二连接部402沿第一方向延伸的部分可以与固定板300固定连接。
第一连接部401用于与第一箱体部111的第一壁连接，第一壁用于覆盖电池单体20和固定板300。在一些实施例中，第一箱体部111为一侧开口的空心结构。例如，第一箱体部111包括第一侧表面111a，与第一侧表面相邻的第二侧表面111b，与第一侧表面相对设置的的第三侧表面111c，与第二侧表面相对设置的第四侧表面111d以及顶面111e。第一箱体部111的第一壁为顶面111e的内侧，即，位于顶面111e的朝向第一箱体部111开口的一侧。在其它实施例中，第一箱体部111还可以为板状结构，第二箱体部112为一侧开口的空心结构，第一壁为第一箱体部111的朝向第二箱体部112开口的一侧。
第一连接部401与第一箱体部111的第一壁连接，第二连接部402与固定板300连接，第一连接部401与第二连接部402相互连接，实现了第一壁与固定板300的连接。这样，覆盖电池单体20和固定板300的整个第一壁能够与固定板300形成固定连接结构。
在一些实施例中，第一连接部401的面向第一壁的第一面401a设置有凹部4011，该凹部4011用于储存粘接剂，用于粘接第一壁与第一面401a。
第一面401a朝向第一壁并且第一面401a设置有凹部4011，该凹部4011用于储存粘接剂并且可通过挤压工艺形成。当第一连接部401与第一壁连接时，可以在凹部4011中放置足量粘接剂，粘接剂溢出至第一面401a，实现第一壁与第一面401a的粘接。
通过设置第一连接部401的面向第一壁的第一面401a设置有凹部4011，该 凹部4011用于储存粘接剂，用于粘接第一壁与第一面401a，进一步提高了第一连接件400与第一箱体部111之间的连接强度。
在一些实施例中，第一连接部401的远离第一壁的第二面401b抵接电池单体20。
第二面401b与第一面401a相对设置且位于第一连接部401的远离第一壁的一侧，第二面401b与电池单体20的顶面201a抵接。这样，电池单体20对第一连接部401起支撑作用，使第一连接部401与第一壁之间的连接更为紧密牢固。
可选地，在本申请一实施例中，还可以在第二面401b上涂布粘接剂，使第二面401b与电池单体20的顶面201a粘接，从而增加了第一连接部401与电池单体20之间的连接强度。
在一些实施例中，第二连接部402设置有卡槽411，第二连接部402通过卡槽插接到固定板300，以与固定板300连接。
在一些实施例中，卡槽411包括第一卡接面411a和第二卡接面411b，第一卡接面411a和第二卡接面411b分别与固定板300抵接，以连接第二连接部402与固定板300。
通过卡槽411实现第二连接部402与固定板300之间的连接，这种连接方式简单、方便，易于实现二者之间的安装与拆卸。
在一些实施例中，卡槽411还用于填充粘接剂，以使卡槽411与固定板300粘接连接。这种连接方式，进一步加强了第二连接部402与固定板300之间的连接强度。
可选地，在本申请一实施例中，第二连接部402还包括第一侧402a和第二侧402b，第一侧402a和第二侧402b上涂覆有粘接剂，以连接第二连接部402与电池单体20，增大第二连接部402与电池单体20之间的连接强度。
如图7和图8所示，第二连接部402的朝向电池单体20的侧面设置有储胶槽421，储胶槽421用于储存粘结剂，以在第二连接部402连接至固定板300时，储胶槽421内的粘接剂溢出以粘接第二连接部402与电池单体20。
当第二连接部402与固定板300连接时，储胶槽421被挤压，储胶槽421内的粘接剂溢出，从而第二连接部402的第一侧402a和第二侧402b分别与电池单体20粘接。第二连接部402与电池单体20的粘接使得第一箱体部111与第二箱体部112之 间的连接更为牢固，进一步增加了电池10的整体强度。
在一些实施例中，第二连接部402的远离第一连接部401的端部设置有悬臂4021，悬臂4021从端部处朝向第一连接部401倾斜设置，以形成开口朝向第一连接部401的储胶槽421。
当第二连接部402与固定板300连接时，悬臂4021朝向第二侧402b被挤压，从而储胶槽421内的粘接剂溢出以粘接第二连接部402与电池单体20。在一些实施例中，悬臂4021可以只设置在第二连接部402的一侧，比如第一侧402a或第二侧402b，也可以设置在第二连接部402的两侧，比如第一侧402a和第二侧402b，本申请实施例对此不作限制。
在一些实施例中，悬臂4021上设置有通孔，以在第二连接部402连接至固定板300时，储胶槽421内的粘接剂从通孔溢出以粘接第二连接部402与电池单体20。
通孔可以沿悬臂4021的延伸方向设置，每个通孔之间的间距可以根据实际情况设置，本申请实施例对此不作限制。
在连接第二连接部402与固定板300的过程中，储胶槽421内的粘接剂从通孔溢出后，悬臂4021的朝向电池单体20的一侧，即悬臂侧4021a，与电池单体20粘接，同时第二连接部402的第一侧402a和第二侧402b也分别与电池单体20粘接，从而增加了第二连接部402与电池单体20的粘接面积，使二者之间的粘接更牢固。
如图9和图10所示，电池10包括电池模块50，该电池模块50包括N列电池单体20和N-1个固定板300。N列电池单体20中的每列电池单体20包括沿第一方向排列的多个电池单体20，N列电池单体沿第二方向排列，N为大于1的整数，第一方向垂直于第二方向。固定板300沿第一方向延伸且设置于相邻的两列电池单体20之间，固定板300与相邻的两列电池单体20中的每个电池单体20固定连接。固定板300在第一方向上的端部设置有固定结构302，固定板300通过固定结构302固定于第二箱体部402。
N列电池单体20中的每列电池单体20沿第一方向排列，其中，第一方向可以为x方向。N列电池单体20沿第二方向排列，其中，第二方向可以为y方向，x方向与y方向相互垂直。
电池模块50包括N列电池单体20和N-1个固定板300，也就是说，固定板300设置于电池模块50的内部，电池模块50的外侧不再设置固定板300。例如，两列 电池单体20之间设置一个固定板300，三列电池单体20之间设置两个固定板300，以此类推。通过这样的设置可以利用较少的固定板300使得电池模块100中的每个电池单体20均可以被固定板300固定连接。
固定结构302可以设置于固定板300在x方向上的两端。固定板300通过固定结构302固定于第二箱体部112，进而实现将电池模块50固定于第二箱体部112。如上所述，电池模块50中的每个电池单体20均被固定板300固定连接，再通过固定结构302可以实现每个电池单体20与第二箱体部112的固定连接。
在电池模块50的相邻的两列电池单体20之间设置固定板300，该固定板300与该两列电池单体中20的每个电池单体20固定连接，在固定板300的端部设置固定结构302，固定板300通过固定结构302固定于第二箱体部112。这样，电池10中的每个电池单体20都被固定板300和固定结构302固定于第二箱体部112，因而每个电池单体20能够将其载荷传递到第二箱体部112，保障了电池10的结构强度；在这种情况下，电池模块50外侧可以不再设置侧板，第二箱体部112的中部也不需要再设置梁等结构，可以较大限度地提升电池内部的空间利用率，从而提升电池的能量密度。
在一些实施例中，固定板300与相邻的两列电池单体20中的每个电池单体20之间可以通过粘接的方式固定连接。例如，在本申请一个实施例中，固定板300与相邻的两列电池单体20中的每个电池单体20可以通过结构胶粘接，但本申请实施例对此并不限定。
可选地，N列电池单体20中的每列电池单体20中相邻的电池单体20间也可以粘接，例如，通过结构胶310粘接，但本申请实施例对此并不限定。通过每列电池单体20中相邻的电池单体20间的固定可以进一步增强电池单体20的固定效果。
可选地，固定板300可以为金属板，例如，可以为钢板或铝板，也可以为塑料板，固定板300的材料还可以为复合材料，例如，在金属板表面涂覆其他材料，本申请实施例对此并不限定。
可选地，固定板300的厚度可以为0.1-0.5mm，例如，在本申请一个实施例中，固定板的厚度可以为0.2-0.4mm。采用该厚度的固定板300可以在保证强度的情况下减小固定板300占用的空间。
在一些实施例中，电池10包括多个电池模块50，多个电池模块50沿第二方向排列，相邻的电池模块50之间具有间隙。
多个电池模块50可以沿y方向排列，相邻的电池模块50之间没有固定板300，具有一定的间隙。也就是说，在一个电池模块50内，在两列电池单体20间设置固定板300，但在相邻的电池模块50之间不设置固定板300。这样，一方面可以使得电池10内部的固定板300尽可能地减少，另一方面可以在相邻的电池模块50之间形成一定的间隙，给电池单体20提供膨胀空间。
在一些实施例中，电池10还包括第二连接件，第二连接件的部分设置于间隙内，用于连接第一箱体部111和间隙两侧的电池单体20。
第二连接件可以与第一连接件400具有类似的结构，具体细节不再赘述，可以参见上述各实施例。应理解，在间隙内没有固定板300的情况下，第二连接件不需要设置卡槽。
可选地，在本申请的一个实施例中，第二连接件包括第一连接部和第二连接部，第二连接件的第一连接部与第一箱体部111相连接，第二连接件的第二连接部与间隙两侧的电池单体20相连接。第二连接件的部分设置于间隙内，可以是第二连接件的第二连接部插入该间隙，第二连接件的第二连接部分别与间隙两侧的电池单体20抵接。第二连接件的设置，可以隔离两个电池模块50之间由于相对运动产生的摩擦及碰撞，同时也进一步加强了第一箱体部111与电池单体20之间的连接强度。
在一些实施例中，固定结构302包括端板304，端板304与固定板300的端部固定连接，且与位于固定板300的端部的电池单体20固定连接。例如，对于长方体型电池单体20，端板304可以垂直连接于固定板300，并与固定板300分别连接长方体型电池单体20的两个相邻的侧壁，从而进一步加强对电池单体20的固定效果。
可选地，端板304可以采用与固定板300相同的材料，例如，金属、塑料或复合材料。端板304的厚度也可以与固定板300相同。端板304的材料或厚度也可以与固定板300不同，例如，端板304可以采用更高强度或厚度的设置，但本申请实施例对此并不限定。
可选地，固定板300与端板304之间的连接方式可以是电阻焊接、电阻铆接、SPR铆接、锁螺栓或卡接等连接方式；端板304也可以通过电阻焊接、电阻铆接、SPR铆接、锁螺栓或卡接等连接方式固定到箱体上，但本申请实施例对此并不限定。
可选地，端板304与电池单体20之间可以通过粘接的方式固定连接，例如，通过结构胶粘接，但本申请实施例对此并不限定。
在一些实施例中，电池10还可以包括另一种电池模块。该电池模块包括多个电池单体20，侧板和/或端板。侧板和/或端板用于包围多个电池单体20以固定该多个电池单体20，电池模块通过该侧板和/或端板固定于第二箱体部112，固定板300为该侧板和/或端板。
可选地，在本申请的一实施例中，多个电池单体20中的每列电池单体20中的电池单体20沿第一方向排列，各列电池单体20沿第二方向排列，多个电池单体20组成电池单体组。在沿第一方向上，电池单体组的外侧设置有侧板；在沿第二方向上，电池单体组的外侧设置有端板。在一种可能的实现方式中，固定板300可以为侧板，电池模块通过该侧板固定于第二箱体部112，第一连接件400的第二连接部402可以插入电池单体组与侧板之间的缝隙内，第一连接件400的第一连接部401与第一箱体部111连接，从而第一连接件400经由侧板将第一箱体部111和第二箱体部112连接。在其它可能的实现方式中，固定板300还可以为端板或还可以为侧板和端板，本申请实施例对此不作限制。
图11是本申请实施例的第一连接件的示意图。可选地，在本申请的一实施例中，固定板300为侧板和端板，电池10包括多个电池模块，第一连接件400的第一连接部401和第二连接部有402均成十字形，第一连接件400分别在四个拐角处与四个电池模块连接，其中，第二连接部402的两个分部402’分别与两个电池模块的端板相连，第二连接部402的另外两个分部402’分别与另外两个电池模块的侧板相连。通过上述设置，可以将相邻的四个电池模块、第一箱体部111和第二箱体部112连接在一起形成一个整体，即电池10，从而进一步增加了电池10的整体结构强度。
在一些实施例中，电池10还包括汇流部件12，汇流部件12用于电连接电池单体20。第一连接件400的部分设置于相邻的汇流部件12之间。
相邻的汇流部件12之间距离较近，在高压等情况下容易产生电弧引起电池短路，通过在相邻的汇流部件12之间设置第一连接件400，且第一连接件400为绝缘的连接件，可以隔离相邻的汇流部件12，降低短路的风险。
可选地，在本申请的一个实施例中，第一连接件400设置于一个电池模块50中的相邻的两列电池单体20之间，在这种情况下，第一连接件400的设置既能够提高电池10的整体结构强度，又能够隔离相邻的汇流部件12，提高电池10的安全性能。
可选地，在本申请的一个实施例中，第二连接件设置于相邻的电池模块50 之间，第一连接件400设置于相邻的汇流部件12之间，在这种情况下，既可以隔离相邻的两个电池模块20之间的碰撞摩擦，同时还可以隔离相邻的汇流部件12，从而进一步提高了电池10的整体结构强度，同时保证了电池10的安全性。
应理解，本申请各实施例中相关的部分可以相互参考，为了简洁不再赘述。
本申请一个实施例还提供了一种用电设备，该用电设备可以包括前述实施例中的电池10。可选地，该用电设备可以为车辆1、船舶或航天器等，但本申请实施例对此并不限定。
上文描述了本申请实施例的电池10和用电设备，下面将描述本申请实施例的制备电池的方法和设备，其中未详细描述的部分可参见前述各实施例。
图12示出了本申请一个实施例的制备电池的方法3000的示意性流程图。如图12所示，该方法3000可以包括：
310，提供电池单体20；
320，提供箱体11，该箱体11包括第一箱体部111和第二箱体部112，第一箱体部111盖合第二箱体部112形成容纳电池单体20的容纳腔；
330，提供固定板300；
340，提供第一连接件400；
350，将电池单体20容纳于容纳腔内，通过固定板300将电池单体20固定于第二箱体部112，通过第一连接件400连接第一箱体部111和固定板300。
图13示出了本申请一个实施例的制备电池的设备600的示意性框图。如图13所示，制备电池的设备600可以包括：提供模块610和安装模块620。
提供模块610，用于提供电池单体20，箱体11，固定板300和第一连接件400。箱体11包括第一箱体部111和第二箱体部112，第一箱体部111盖合第二箱体部112形成容纳电池单体20的容纳腔。
安装模块620，用于将电池单体20容纳于容纳腔内，通过固定板300将电池单体20固定于第二箱体部112，通过第一连接件400连接第一箱体部111和固定板300。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请 并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (17)

  1. 一种电池(10)，其特征在于，包括：
    电池单体(20)；
    箱体(11)，所述箱体(11)包括第一箱体部(111)和第二箱体部(112)，所述第一箱体部(111)盖合所述第二箱体部(112)形成容纳所述电池单体(20)的容纳腔，所述电池单体(20)容纳于所述容纳腔内；
    固定板(300)，用于将所述电池单体(20)固定于所述第二箱体部(112)；
    第一连接件(400)，用于连接所述第一箱体部(111)和所述固定板(300)。
  2. 根据权利要求1所述电池(10)，其特征在于，所述第一连接件(400)包括相互连接的第一连接部(401)和第二连接部(402)，所述第一连接部(401)用于与所述第一箱体部(111)的第一壁连接，其中，所述第一壁用于覆盖所述电池单体(20)和所述固定板(300)，所述第二连接部(402)用于与所述固定板(300)连接。
  3. 根据权利要求2所述的电池(10)，其特征在于，所述第一连接部(401)的面向所述第一壁的第一面(401a)设置有凹部(4011)，所述凹部(4011)用于储存粘接剂，用于粘接所述第一壁与所述第一面(401a)。
  4. 根据权利要求2或3所述的电池(10)，其特征在于，所述第一连接部(401)的远离所述第一壁的第二面(401b)抵接所述电池单体(20)。
  5. 根据权利要求2至4中任一项所述的电池(10)，其特征在于，所述第二连接部(402)设置有卡槽(411)，所述第二连接部(402)通过所述卡槽(411)插接到所述固定板(300)，以与所述固定板(300)连接。
  6. 根据权利要求5所述的电池(10)，其特征在于，所述卡槽(411)还用于填充粘接剂，以使所述卡槽(411)与所述固定板(300)粘接连接。
  7. 根据权利要求2至6中任一项所述的电池(10)，其特征在于，所述第二连接部(402)的朝向所述电池单体(20)的侧面设置有储胶槽(421)，所述储胶槽(421)用于储存粘结剂，以在所述第二连接部(402)连接至所述固定板(300)时，所述储胶槽(421)内的粘接剂溢出以粘接所述第二连接部(402)与所述电池单体(20)。
  8. 根据权利要求7所述的电池(10)，其特征在于，所述第二连接部(402)的远离所述第一连接部(401)的端部设置有悬臂(4021)，所述悬臂(4021)从所述端部 处朝向所述第一连接部(401)倾斜设置，以形成开口朝向所述第一连接部(401)的所述储胶槽(421)。
  9. 根据权利要求8所述的电池(10)，其特征在于，所述悬臂(4021)上设置有通孔，以在所述第二连接部(402)连接至所述固定板(300)时，所述储胶槽(421)内的粘接剂从所述通孔溢出以粘接所述第二连接部(402)与所述电池单体(20)。
  10. 根据权利要求1至9中任一项所述的电池(10)，其特征在于，所述电池(10)包括电池模块(50)，所述电池模块(50)包括：
    N列所述电池单体(20)，所述N列所述电池单体(20)中的每列所述电池单体(20)包括沿第一方向排列的多个所述电池单体(20)，所述N列电池单体(20)沿第二方向排列，N为大于1的整数，所述第一方向垂直于所述第二方向；
    N-1个所述固定板(300)，所述固定板(300)沿所述第一方向延伸且设置于相邻的两列所述电池单体(20)之间，所述固定板(300)与所述相邻的两列所述电池单体(20)中的每个所述电池单体(20)固定连接；
    其中，所述固定板(300)在所述第一方向上的端部设置有固定结构(302)，所述固定板(300)通过所述固定结构(302)固定于所述第二箱体部(112)。
  11. 根据权利要求10所述的电池(10)，其特征在于，所述电池(10)包括多个所述电池模块(50)，多个所述电池模块(50)沿所述第二方向排列，相邻的所述电池模块(50)间具有间隙。
  12. 根据权利要求11所述的电池(10)，其特征在于，所述电池(10)还包括第二连接件，所述第二连接件的部分设置于所述间隙内，用于连接所述第一箱体部(111)和所述间隙两侧的所述电池单体(20)。
  13. 根据权利要求10至12中任一项所述的电池(10)，其特征在于，所述固定结构(302)包括端板(304)，所述端板(304)与所述固定板(300)的所述端部固定连接，且与位于所述固定板(300)的所述端部的所述电池单体(20)固定连接。
  14. 根据权利要求1至13中任一项所述的电池(10)，其特征在于，所述电池(10)还包括：
    汇流部件(12)，用于电连接所述电池单体(20)；
    其中，所述第一连接件(400)的部分设置于相邻的汇流部件(12)之间。
  15. 一种用电设备，包括如权利要求1至14中任一项所述的电池(10)，所述电池(10)用于向所述用电设备供电。
  16. 一种制备电池的方法，其特征在于，包括：
    提供(310)电池单体(20)；
    提供(320)箱体(11)，所述箱体(11)包括第一箱体部(111)和第二箱体部(112)，所述第一箱体部(111)盖合所述第二箱体部(112)形成容纳所述电池单体(20)的容纳腔；
    提供(330)固定板(300)；
    提供(340)第一连接件(400)；
    将所述电池单体(20)容纳(350)于所述容纳腔内，通过所述固定板(300)将所述电池单体(20)固定于所述第二箱体部(112)，通过所述第一连接件(400)连接所述第一箱体部(111)和所述固定板(300)。
  17. 一种制备电池的设备，其特征在于，包括：
    提供模块(610)，用于提供电池单体(20)，箱体(11)，固定板(300)和第一连接件(400)，所述箱体(11)包括第一箱体部(111)和第二箱体部(112)，所述第一箱体部(111)盖合所述第二箱体部(112)形成容纳所述电池单体(20)的容纳腔；
    安装模块(620)，用于将所述电池单体(20)容纳于所述容纳腔内，通过所述固定板(300)将所述电池单体(20)固定于所述第二箱体部(112)，通过所述第一连接件(400)连接所述第一箱体部(111)和所述固定板(300)。
PCT/CN2022/071718 2022-01-13 2022-01-13 电池、用电设备、制备电池的方法和设备 WO2023133747A1 (zh)

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